| 1 | /* |
|---|---|
| 2 | * Copyright (c) 2007-2016 Apple Inc. All rights reserved. |
| 3 | * |
| 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| 5 | * |
| 6 | * This file contains Original Code and/or Modifications of Original Code |
| 7 | * as defined in and that are subject to the Apple Public Source License |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in |
| 9 | * compliance with the License. The rights granted to you under the License |
| 10 | * may not be used to create, or enable the creation or redistribution of, |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any |
| 13 | * terms of an Apple operating system software license agreement. |
| 14 | * |
| 15 | * Please obtain a copy of the License at |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
| 17 | * |
| 18 | * The Original Code and all software distributed under the License are |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| 23 | * Please see the License for the specific language governing rights and |
| 24 | * limitations under the License. |
| 25 | * |
| 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| 27 | */ |
| 28 | /*- |
| 29 | * Copyright (c) 1999-2002 Robert N. M. Watson |
| 30 | * Copyright (c) 2001-2005 Networks Associates Technology, Inc. |
| 31 | * Copyright (c) 2005-2007 SPARTA, Inc. |
| 32 | * All rights reserved. |
| 33 | * |
| 34 | * This software was developed by Robert Watson for the TrustedBSD Project. |
| 35 | * |
| 36 | * This software was developed for the FreeBSD Project in part by Network |
| 37 | * Associates Laboratories, the Security Research Division of Network |
| 38 | * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), |
| 39 | * as part of the DARPA CHATS research program. |
| 40 | * |
| 41 | * This software was enhanced by SPARTA ISSO under SPAWAR contract |
| 42 | * N66001-04-C-6019 ("SEFOS"). |
| 43 | * |
| 44 | * Redistribution and use in source and binary forms, with or without |
| 45 | * modification, are permitted provided that the following conditions |
| 46 | * are met: |
| 47 | * 1. Redistributions of source code must retain the above copyright |
| 48 | * notice, this list of conditions and the following disclaimer. |
| 49 | * 2. Redistributions in binary form must reproduce the above copyright |
| 50 | * notice, this list of conditions and the following disclaimer in the |
| 51 | * documentation and/or other materials provided with the distribution. |
| 52 | * |
| 53 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 54 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 55 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 56 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 57 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 58 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 59 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 60 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 61 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 62 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 63 | * SUCH DAMAGE. |
| 64 | * |
| 65 | * $FreeBSD: src/sys/sys/mac_policy.h,v 1.39 2003/04/18 19:57:37 rwatson Exp $ |
| 66 | */ |
| 67 | |
| 68 | /** |
| 69 | * @file mac_policy.h |
| 70 | * @brief Kernel Interfaces for MAC policy modules |
| 71 | * |
| 72 | * This header defines the list of operations that are defined by the |
| 73 | * TrustedBSD MAC Framwork on Darwin. MAC Policy modules register |
| 74 | * with the framework to declare interest in a specific set of |
| 75 | * operations. If interest in an entry point is not declared, then |
| 76 | * the policy will be ignored when the Framework evaluates that entry |
| 77 | * point. |
| 78 | */ |
| 79 | |
| 80 | #ifndef _SECURITY_MAC_POLICY_H_ |
| 81 | #define _SECURITY_MAC_POLICY_H_ |
| 82 | |
| 83 | #ifndef PRIVATE |
| 84 | #warning "MAC policy is not KPI, see Technical Q&A QA1574, this header will be removed in next version" |
| 85 | #endif |
| 86 | |
| 87 | #include <security/_label.h> |
| 88 | #include <kern/cs_blobs.h> |
| 89 | |
| 90 | struct attrlist; |
| 91 | struct auditinfo; |
| 92 | struct bpf_d; |
| 93 | struct cs_blob; |
| 94 | struct devnode; |
| 95 | struct exception_action; |
| 96 | struct fileglob; |
| 97 | struct ifnet; |
| 98 | struct inpcb; |
| 99 | struct ipq; |
| 100 | struct label; |
| 101 | struct mac_policy_conf; |
| 102 | struct mbuf; |
| 103 | struct mount; |
| 104 | struct msg; |
| 105 | struct msqid_kernel; |
| 106 | struct pipe; |
| 107 | struct pseminfo; |
| 108 | struct pshminfo; |
| 109 | struct sbuf; |
| 110 | struct semid_kernel; |
| 111 | struct shmid_kernel; |
| 112 | struct socket; |
| 113 | struct sockopt; |
| 114 | struct task; |
| 115 | struct thread; |
| 116 | struct tty; |
| 117 | struct ucred; |
| 118 | struct vfs_attr; |
| 119 | struct vnode; |
| 120 | struct sockaddr; |
| 121 | /** @struct dummy */ |
| 122 | |
| 123 | |
| 124 | /* |
| 125 | * proc_ident_t support, see: rdar://problem/58928152 |
| 126 | * Should be removed once all dependent parties adopt |
| 127 | * proc_ident_t. |
| 128 | */ |
| 129 | #define MAC_PROC_IDENT_SUPPORT |
| 130 | |
| 131 | #ifndef _KAUTH_CRED_T |
| 132 | #define _KAUTH_CRED_T |
| 133 | typedef struct ucred *kauth_cred_t; |
| 134 | #endif /* !_KAUTH_CRED_T */ |
| 135 | |
| 136 | #ifndef __IOKIT_PORTS_DEFINED__ |
| 137 | #define __IOKIT_PORTS_DEFINED__ |
| 138 | #ifdef __cplusplus |
| 139 | class OSObject; |
| 140 | typedef OSObject *io_object_t; |
| 141 | #else |
| 142 | struct OSObject; |
| 143 | typedef struct OSObject *io_object_t; |
| 144 | #endif |
| 145 | #endif /* __IOKIT_PORTS_DEFINED__ */ |
| 146 | |
| 147 | /*- |
| 148 | * MAC entry points are generally named using the following template: |
| 149 | * |
| 150 | * mpo_<object>_<operation>() |
| 151 | * |
| 152 | * or: |
| 153 | * |
| 154 | * mpo_<object>_check_<operation>() |
| 155 | * |
| 156 | * Entry points are sorted by object type. |
| 157 | * |
| 158 | * It may be desirable also to consider some subsystems as "objects", such |
| 159 | * as system, iokit, etc. |
| 160 | */ |
| 161 | |
| 162 | /** |
| 163 | * @name Entry Points for Label Management |
| 164 | * |
| 165 | * These are the entry points corresponding to the life cycle events for |
| 166 | * kernel objects, such as initialization, creation, and destruction. |
| 167 | * |
| 168 | * Most policies (that use labels) will initialize labels by allocating |
| 169 | * space for policy-specific data. In most cases, it is permitted to |
| 170 | * sleep during label initialization operations; it will be noted when |
| 171 | * it is not permitted. |
| 172 | * |
| 173 | * Initialization usually will not require doing more than allocating a |
| 174 | * generic label for the given object. What follows initialization is |
| 175 | * creation, where a label is made specific to the object it is associated |
| 176 | * with. Destruction occurs when the label is no longer needed, such as |
| 177 | * when the corresponding object is destroyed. All necessary cleanup should |
| 178 | * be performed in label destroy operations. |
| 179 | * |
| 180 | * Where possible, the label entry points have identical parameters. If |
| 181 | * the policy module does not require structure-specific label |
| 182 | * information, the same function may be registered in the policy |
| 183 | * operation vector. Many policies will implement two such generic |
| 184 | * allocation calls: one to handle sleepable requests, and one to handle |
| 185 | * potentially non-sleepable requests. |
| 186 | */ |
| 187 | |
| 188 | |
| 189 | /** |
| 190 | * @brief Audit event postselection |
| 191 | * @param cred Subject credential |
| 192 | * @param syscode Syscall number |
| 193 | * @param args Syscall arguments |
| 194 | * @param error Syscall errno |
| 195 | * @param retval Syscall return value |
| 196 | * |
| 197 | * This is the MAC Framework audit postselect, which is called before |
| 198 | * exiting a syscall to determine if an audit event should be committed. |
| 199 | * A return value of MAC_AUDIT_NO forces the audit record to be suppressed. |
| 200 | * Any other return value results in the audit record being committed. |
| 201 | * |
| 202 | * @warning The suppression behavior will probably go away in Apple's |
| 203 | * future version of the audit implementation. |
| 204 | * |
| 205 | * @return Return MAC_AUDIT_NO to force suppression of the audit record. |
| 206 | * Any other value results in the audit record being committed. |
| 207 | * |
| 208 | */ |
| 209 | typedef int mpo_audit_check_postselect_t( |
| 210 | kauth_cred_t cred, |
| 211 | unsigned short syscode, |
| 212 | void *args, |
| 213 | int error, |
| 214 | int retval |
| 215 | ); |
| 216 | /** |
| 217 | * @brief Audit event preselection |
| 218 | * @param cred Subject credential |
| 219 | * @param syscode Syscall number |
| 220 | * @param args Syscall arguments |
| 221 | * |
| 222 | * This is the MAC Framework audit preselect, which is called before a |
| 223 | * syscall is entered to determine if an audit event should be created. |
| 224 | * If the MAC policy forces the syscall to be audited, MAC_AUDIT_YES should be |
| 225 | * returned. A return value of MAC_AUDIT_NO causes the audit record to |
| 226 | * be suppressed. Returning MAC_POLICY_DEFAULT indicates that the policy wants |
| 227 | * to defer to the system's existing preselection mechanism. |
| 228 | * |
| 229 | * When policies return different preferences, the Framework decides what action |
| 230 | * to take based on the following policy. If any policy returns MAC_AUDIT_YES, |
| 231 | * then create an audit record, else if any policy returns MAC_AUDIT_NO, then |
| 232 | * suppress the creations of an audit record, else defer to the system's |
| 233 | * existing preselection mechanism. |
| 234 | * |
| 235 | * @warning The audit implementation in Apple's current version is |
| 236 | * incomplete, so the MAC policies have priority over the system's existing |
| 237 | * mechanisms. This will probably change in the future version where |
| 238 | * the audit implementation is more complete. |
| 239 | * |
| 240 | * @return Return MAC_AUDIT_YES to force auditing of the syscall, |
| 241 | * MAC_AUDIT_NO to force no auditing of the syscall, MAC_AUDIT_DEFAULT |
| 242 | * to allow auditing mechanisms to determine if the syscall is audited. |
| 243 | * |
| 244 | */ |
| 245 | typedef int mpo_audit_check_preselect_t( |
| 246 | kauth_cred_t cred, |
| 247 | unsigned short syscode, |
| 248 | void *args |
| 249 | ); |
| 250 | /** |
| 251 | * @brief Indicate desire to change the process label at exec time |
| 252 | * @param old Existing subject credential |
| 253 | * @param vp File being executed |
| 254 | * @param offset Offset of binary within file being executed |
| 255 | * @param scriptvp Script being executed by interpreter, if any. |
| 256 | * @param vnodelabel Label corresponding to vp |
| 257 | * @param scriptvnodelabel Script vnode label |
| 258 | * @param execlabel Userspace provided execution label |
| 259 | * @param p Object process |
| 260 | * @param macpolicyattr MAC policy-specific spawn attribute data |
| 261 | * @param macpolicyattrlen Length of policy-specific spawn attribute data |
| 262 | * @see mac_execve |
| 263 | * @see mpo_cred_label_update_execve_t |
| 264 | * @see mpo_vnode_check_exec_t |
| 265 | * |
| 266 | * Indicate whether this policy intends to update the label of a newly |
| 267 | * created credential from the existing subject credential (old). This |
| 268 | * call occurs when a process executes the passed vnode. If a policy |
| 269 | * returns success from this entry point, the mpo_cred_label_update_execve |
| 270 | * entry point will later be called with the same parameters. Access |
| 271 | * has already been checked via the mpo_vnode_check_exec entry point, |
| 272 | * this entry point is necessary to preserve kernel locking constraints |
| 273 | * during program execution. |
| 274 | * |
| 275 | * The supplied vnode and vnodelabel correspond with the file actually |
| 276 | * being executed; in the case that the file is interpreted (for |
| 277 | * example, a script), the label of the original exec-time vnode has |
| 278 | * been preserved in scriptvnodelabel. |
| 279 | * |
| 280 | * The final label, execlabel, corresponds to a label supplied by a |
| 281 | * user space application through the use of the mac_execve system call. |
| 282 | * |
| 283 | * The vnode lock is held during this operation. No changes should be |
| 284 | * made to the old credential structure. |
| 285 | * |
| 286 | * @warning Even if a policy returns 0, it should behave correctly in |
| 287 | * the presence of an invocation of mpo_cred_label_update_execve, as that |
| 288 | * call may happen as a result of another policy requesting a transition. |
| 289 | * |
| 290 | * @return Non-zero if a transition is required, 0 otherwise. |
| 291 | */ |
| 292 | typedef int mpo_cred_check_label_update_execve_t( |
| 293 | kauth_cred_t old, |
| 294 | struct vnode *vp, |
| 295 | off_t offset, |
| 296 | struct vnode *scriptvp, |
| 297 | struct label *vnodelabel, |
| 298 | struct label *scriptvnodelabel, |
| 299 | struct label *execlabel, |
| 300 | struct proc *p, |
| 301 | void *macpolicyattr, |
| 302 | size_t macpolicyattrlen |
| 303 | ); |
| 304 | /** |
| 305 | * @brief Access control check for relabelling processes |
| 306 | * @param cred Subject credential |
| 307 | * @param newlabel New label to apply to the user credential |
| 308 | * @see mpo_cred_label_update_t |
| 309 | * @see mac_set_proc |
| 310 | * |
| 311 | * Determine whether the subject identified by the credential can relabel |
| 312 | * itself to the supplied new label (newlabel). This access control check |
| 313 | * is called when the mac_set_proc system call is invoked. A user space |
| 314 | * application will supply a new value, the value will be internalized |
| 315 | * and provided in newlabel. |
| 316 | * |
| 317 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 318 | * errno should be returned. |
| 319 | */ |
| 320 | typedef int mpo_cred_check_label_update_t( |
| 321 | kauth_cred_t cred, |
| 322 | struct label *newlabel |
| 323 | ); |
| 324 | /** |
| 325 | * @brief Access control check for visibility of other subjects |
| 326 | * @param u1 Subject credential |
| 327 | * @param u2 Object credential |
| 328 | * |
| 329 | * Determine whether the subject identified by the credential u1 can |
| 330 | * "see" other subjects with the passed subject credential u2. This call |
| 331 | * may be made in a number of situations, including inter-process status |
| 332 | * sysctls used by ps, and in procfs lookups. |
| 333 | * |
| 334 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 335 | * errno should be returned. Suggested failure: EACCES for label mismatch, |
| 336 | * EPERM for lack of privilege, or ESRCH to hide visibility. |
| 337 | */ |
| 338 | typedef int mpo_cred_check_visible_t( |
| 339 | kauth_cred_t u1, |
| 340 | kauth_cred_t u2 |
| 341 | ); |
| 342 | /** |
| 343 | * @brief Associate a credential with a new process at fork |
| 344 | * @param cred credential to inherited by new process |
| 345 | * @param proc the new process |
| 346 | * |
| 347 | * Allow a process to associate the credential with a new |
| 348 | * process for reference countng purposes. |
| 349 | * NOTE: the credential can be dis-associated in ways other |
| 350 | * than exit - so this strategy is flawed - should just |
| 351 | * catch label destroy callback. |
| 352 | */ |
| 353 | typedef void mpo_cred_label_associate_fork_t( |
| 354 | kauth_cred_t cred, |
| 355 | proc_t proc |
| 356 | ); |
| 357 | /** |
| 358 | * @brief Create the first process |
| 359 | * @param cred Subject credential to be labeled |
| 360 | * |
| 361 | * Create the subject credential of process 0, the parent of all BSD |
| 362 | * kernel processes. Policies should update the label in the |
| 363 | * previously initialized credential structure. |
| 364 | */ |
| 365 | typedef void mpo_cred_label_associate_kernel_t( |
| 366 | kauth_cred_t cred |
| 367 | ); |
| 368 | /** |
| 369 | * @brief Create a credential label |
| 370 | * @param parent_cred Parent credential |
| 371 | * @param child_cred Child credential |
| 372 | * |
| 373 | * Set the label of a newly created credential, most likely using the |
| 374 | * information in the supplied parent credential. |
| 375 | * |
| 376 | * @warning This call is made when crcopy or crdup is invoked on a |
| 377 | * newly created struct ucred, and should not be confused with a |
| 378 | * process fork or creation event. |
| 379 | */ |
| 380 | typedef void mpo_cred_label_associate_t( |
| 381 | kauth_cred_t parent_cred, |
| 382 | kauth_cred_t child_cred |
| 383 | ); |
| 384 | /** |
| 385 | * @brief Create the first process |
| 386 | * @param cred Subject credential to be labeled |
| 387 | * |
| 388 | * Create the subject credential of process 1, the parent of all BSD |
| 389 | * user processes. Policies should update the label in the previously |
| 390 | * initialized credential structure. This is the 'init' process. |
| 391 | */ |
| 392 | typedef void mpo_cred_label_associate_user_t( |
| 393 | kauth_cred_t cred |
| 394 | ); |
| 395 | /** |
| 396 | * @brief Destroy credential label |
| 397 | * @param label The label to be destroyed |
| 398 | * |
| 399 | * Destroy a user credential label. Since the user credential |
| 400 | * is going out of scope, policy modules should free any internal |
| 401 | * storage associated with the label so that it may be destroyed. |
| 402 | */ |
| 403 | typedef void mpo_cred_label_destroy_t( |
| 404 | struct label *label |
| 405 | ); |
| 406 | /** |
| 407 | * @brief Externalize a user credential label for auditing |
| 408 | * @param label Label to be externalized |
| 409 | * @param element_name Name of the label namespace for which labels should be |
| 410 | * externalized |
| 411 | * @param sb String buffer to be filled with a text representation of the label |
| 412 | * |
| 413 | * Produce an external representation of the label on a user credential for |
| 414 | * inclusion in an audit record. An externalized label consists of a text |
| 415 | * representation of the label contents that will be added to the audit record |
| 416 | * as part of a text token. Policy-agnostic user space tools will display |
| 417 | * this externalized version. |
| 418 | * |
| 419 | * @return 0 on success, return non-zero if an error occurs while |
| 420 | * externalizing the label data. |
| 421 | * |
| 422 | */ |
| 423 | typedef int mpo_cred_label_externalize_audit_t( |
| 424 | struct label *label, |
| 425 | char *element_name, |
| 426 | struct sbuf *sb |
| 427 | ); |
| 428 | /** |
| 429 | * @brief Externalize a user credential label |
| 430 | * @param label Label to be externalized |
| 431 | * @param element_name Name of the label namespace for which labels should be |
| 432 | * externalized |
| 433 | * @param sb String buffer to be filled with a text representation of the label |
| 434 | * |
| 435 | * Produce an external representation of the label on a user |
| 436 | * credential. An externalized label consists of a text representation |
| 437 | * of the label contents that can be used with user applications. |
| 438 | * Policy-agnostic user space tools will display this externalized |
| 439 | * version. |
| 440 | * |
| 441 | * @return 0 on success, return non-zero if an error occurs while |
| 442 | * externalizing the label data. |
| 443 | * |
| 444 | */ |
| 445 | typedef int mpo_cred_label_externalize_t( |
| 446 | struct label *label, |
| 447 | char *element_name, |
| 448 | struct sbuf *sb |
| 449 | ); |
| 450 | /** |
| 451 | * @brief Initialize user credential label |
| 452 | * @param label New label to initialize |
| 453 | * |
| 454 | * Initialize the label for a newly instantiated user credential. |
| 455 | * Sleeping is permitted. |
| 456 | */ |
| 457 | typedef void mpo_cred_label_init_t( |
| 458 | struct label *label |
| 459 | ); |
| 460 | /** |
| 461 | * @brief Internalize a user credential label |
| 462 | * @param label Label to be internalized |
| 463 | * @param element_name Name of the label namespace for which the label should |
| 464 | * be internalized |
| 465 | * @param element_data Text data to be internalized |
| 466 | * |
| 467 | * Produce a user credential label from an external representation. An |
| 468 | * externalized label consists of a text representation of the label |
| 469 | * contents that can be used with user applications. Policy-agnostic |
| 470 | * user space tools will forward text version to the kernel for |
| 471 | * processing by individual policy modules. |
| 472 | * |
| 473 | * The policy's internalize entry points will be called only if the |
| 474 | * policy has registered interest in the label namespace. |
| 475 | * |
| 476 | * @return 0 on success, Otherwise, return non-zero if an error occurs |
| 477 | * while internalizing the label data. |
| 478 | * |
| 479 | */ |
| 480 | typedef int mpo_cred_label_internalize_t( |
| 481 | struct label *label, |
| 482 | char *element_name, |
| 483 | char *element_data |
| 484 | ); |
| 485 | /** |
| 486 | * @brief Update credential at exec time |
| 487 | * @param old_cred Existing subject credential |
| 488 | * @param new_cred New subject credential to be labeled |
| 489 | * @param p Object process. |
| 490 | * @param vp File being executed |
| 491 | * @param offset Offset of binary within file being executed |
| 492 | * @param scriptvp Script being executed by interpreter, if any. |
| 493 | * @param vnodelabel Label corresponding to vp |
| 494 | * @param scriptvnodelabel Script vnode label |
| 495 | * @param execlabel Userspace provided execution label |
| 496 | * @param csflags Code signing flags to be set after exec |
| 497 | * @param macpolicyattr MAC policy-specific spawn attribute data. |
| 498 | * @param macpolicyattrlen Length of policy-specific spawn attribute data. |
| 499 | * @see mac_execve |
| 500 | * @see mpo_cred_check_label_update_execve_t |
| 501 | * @see mpo_vnode_check_exec_t |
| 502 | * |
| 503 | * Update the label of a newly created credential (new) from the |
| 504 | * existing subject credential (old). This call occurs when a process |
| 505 | * executes the passed vnode and one of the loaded policy modules has |
| 506 | * returned success from the mpo_cred_check_label_update_execve entry point. |
| 507 | * Access has already been checked via the mpo_vnode_check_exec entry |
| 508 | * point, this entry point is only used to update any policy state. |
| 509 | * |
| 510 | * The supplied vnode and vnodelabel correspond with the file actually |
| 511 | * being executed; in the case that the file is interpreted (for |
| 512 | * example, a script), the label of the original exec-time vnode has |
| 513 | * been preserved in scriptvnodelabel. |
| 514 | * |
| 515 | * The final label, execlabel, corresponds to a label supplied by a |
| 516 | * user space application through the use of the mac_execve system call. |
| 517 | * |
| 518 | * If non-NULL, the value pointed to by disjointp will be set to 0 to |
| 519 | * indicate that the old and new credentials are not disjoint, or 1 to |
| 520 | * indicate that they are. |
| 521 | * |
| 522 | * The vnode lock is held during this operation. No changes should be |
| 523 | * made to the old credential structure. |
| 524 | * @return 0 on success, Otherwise, return non-zero if update results in |
| 525 | * termination of child. |
| 526 | */ |
| 527 | typedef int mpo_cred_label_update_execve_t( |
| 528 | kauth_cred_t old_cred, |
| 529 | kauth_cred_t new_cred, |
| 530 | struct proc *p, |
| 531 | struct vnode *vp, |
| 532 | off_t offset, |
| 533 | struct vnode *scriptvp, |
| 534 | struct label *vnodelabel, |
| 535 | struct label *scriptvnodelabel, |
| 536 | struct label *execlabel, |
| 537 | u_int *csflags, |
| 538 | void *macpolicyattr, |
| 539 | size_t macpolicyattrlen, |
| 540 | int *disjointp |
| 541 | ); |
| 542 | /** |
| 543 | * @brief Update a credential label |
| 544 | * @param cred The existing credential |
| 545 | * @param newlabel A new label to apply to the credential |
| 546 | * @see mpo_cred_check_label_update_t |
| 547 | * @see mac_set_proc |
| 548 | * |
| 549 | * Update the label on a user credential, using the supplied new label. |
| 550 | * This is called as a result of a process relabel operation. Access |
| 551 | * control was already confirmed by mpo_cred_check_label_update. |
| 552 | */ |
| 553 | typedef void mpo_cred_label_update_t( |
| 554 | kauth_cred_t cred, |
| 555 | struct label *newlabel |
| 556 | ); |
| 557 | /** |
| 558 | * @brief Access control for launching a process with constraints |
| 559 | * @param curr_p The new process |
| 560 | * @param original_parent_id The pid of the original parent that spawned this process |
| 561 | * @param responsible_pid The pid of the responsible process that spawned this process |
| 562 | * @param macpolicyattr MAC policy-specific spawn attribute data |
| 563 | * @param macpolicyattrlen Length of policy-specific spawn attribute data |
| 564 | * @param fatal_failure_desc Description of fatal failure |
| 565 | * @param fatal_failure_desc_len Failure description len, failure is fatal if non-0 |
| 566 | * |
| 567 | * Detemine whether the process being spawned adheres to the launch |
| 568 | * constraints (e.g. whether the process is spawned by launchd) and should |
| 569 | * be allowed to execute. This call occurs during execve or posix_spawn. |
| 570 | * |
| 571 | * @return Return 0 if process can be created, otherwise an appropriate value for |
| 572 | * errno should be returned. |
| 573 | */ |
| 574 | typedef int mpo_proc_check_launch_constraints_t( |
| 575 | proc_t curr_p, |
| 576 | pid_t original_parent_id, |
| 577 | pid_t responsible_pid, |
| 578 | void *macpolicyattr, |
| 579 | size_t macpolicyattrlen, |
| 580 | launch_constraint_data_t lcd, |
| 581 | char **fatal_failure_desc, size_t *fatal_failure_desc_len |
| 582 | ); |
| 583 | /** |
| 584 | * @brief Create a new devfs device |
| 585 | * @param dev Major and minor numbers of special file |
| 586 | * @param de "inode" of new device file |
| 587 | * @param label Destination label |
| 588 | * @param fullpath Path relative to mount (e.g. /dev) of new device file |
| 589 | * |
| 590 | * This entry point labels a new devfs device. The label will likely be based |
| 591 | * on the path to the device, or the major and minor numbers. |
| 592 | * The policy should store an appropriate label into 'label'. |
| 593 | */ |
| 594 | typedef void mpo_devfs_label_associate_device_t( |
| 595 | dev_t dev, |
| 596 | struct devnode *de, |
| 597 | struct label *label, |
| 598 | const char *fullpath |
| 599 | ); |
| 600 | /** |
| 601 | * @brief Create a new devfs directory |
| 602 | * @param dirname Name of new directory |
| 603 | * @param dirnamelen Length of 'dirname' |
| 604 | * @param de "inode" of new directory |
| 605 | * @param label Destination label |
| 606 | * @param fullpath Path relative to mount (e.g. /dev) of new directory |
| 607 | * |
| 608 | * This entry point labels a new devfs directory. The label will likely be |
| 609 | * based on the path of the new directory. The policy should store an appropriate |
| 610 | * label into 'label'. The devfs root directory is labelled in this way. |
| 611 | */ |
| 612 | typedef void mpo_devfs_label_associate_directory_t( |
| 613 | const char *dirname, |
| 614 | int dirnamelen, |
| 615 | struct devnode *de, |
| 616 | struct label *label, |
| 617 | const char *fullpath |
| 618 | ); |
| 619 | /** |
| 620 | * @brief Copy a devfs label |
| 621 | * @param src Source devfs label |
| 622 | * @param dest Destination devfs label |
| 623 | * |
| 624 | * Copy the label information from src to dest. The devfs file system |
| 625 | * often duplicates (splits) existing device nodes rather than creating |
| 626 | * new ones. |
| 627 | */ |
| 628 | typedef void mpo_devfs_label_copy_t( |
| 629 | struct label *src, |
| 630 | struct label *dest |
| 631 | ); |
| 632 | /** |
| 633 | * @brief Destroy devfs label |
| 634 | * @param label The label to be destroyed |
| 635 | * |
| 636 | * Destroy a devfs entry label. Since the object is going out |
| 637 | * of scope, policy modules should free any internal storage associated |
| 638 | * with the label so that it may be destroyed. |
| 639 | */ |
| 640 | typedef void mpo_devfs_label_destroy_t( |
| 641 | struct label *label |
| 642 | ); |
| 643 | /** |
| 644 | * @brief Initialize devfs label |
| 645 | * @param label New label to initialize |
| 646 | * |
| 647 | * Initialize the label for a newly instantiated devfs entry. Sleeping |
| 648 | * is permitted. |
| 649 | */ |
| 650 | typedef void mpo_devfs_label_init_t( |
| 651 | struct label *label |
| 652 | ); |
| 653 | /** |
| 654 | * @brief Update a devfs label after relabelling its vnode |
| 655 | * @param mp Devfs mount point |
| 656 | * @param de Affected devfs directory entry |
| 657 | * @param delabel Label of devfs directory entry |
| 658 | * @param vp Vnode associated with de |
| 659 | * @param vnodelabel New label of vnode |
| 660 | * |
| 661 | * Update a devfs label when its vnode is manually relabelled, |
| 662 | * for example with setfmac(1). Typically, this will simply copy |
| 663 | * the vnode label into the devfs label. |
| 664 | */ |
| 665 | typedef void mpo_devfs_label_update_t( |
| 666 | struct mount *mp, |
| 667 | struct devnode *de, |
| 668 | struct label *delabel, |
| 669 | struct vnode *vp, |
| 670 | struct label *vnodelabel |
| 671 | ); |
| 672 | /** |
| 673 | * @brief Access control for sending an exception to an exception action |
| 674 | * @param crashlabel The crashing process's label |
| 675 | * @param action Exception action |
| 676 | * @param exclabel Policy label for exception action |
| 677 | * |
| 678 | * Determine whether the the exception message caused by the victim |
| 679 | * process can be sent to the exception action. The policy may compare |
| 680 | * credentials in the crashlabel, which are derived from the process at |
| 681 | * the time the exception occurs, with the credentials in the exclabel, |
| 682 | * which was set at the time the exception port was set, to determine |
| 683 | * its decision. Note that any process from which the policy derived |
| 684 | * any credentials may not exist anymore at the time of this policy |
| 685 | * operation. Sleeping is permitted. |
| 686 | * |
| 687 | * @return Return 0 if the message can be sent, otherwise an |
| 688 | * appropriate value for errno should be returned. |
| 689 | */ |
| 690 | typedef int mpo_exc_action_check_exception_send_t( |
| 691 | struct label *crashlabel, |
| 692 | struct exception_action *action, |
| 693 | struct label *exclabel |
| 694 | ); |
| 695 | /** |
| 696 | * @brief Associate an exception action label |
| 697 | * @param action Exception action to label |
| 698 | * @param exclabel Policy label to be filled in for exception action |
| 699 | * |
| 700 | * Set the label on an exception action. |
| 701 | */ |
| 702 | typedef void mpo_exc_action_label_associate_t( |
| 703 | struct exception_action *action, |
| 704 | struct label *exclabel |
| 705 | ); |
| 706 | /** |
| 707 | * @brief Destroy exception action label |
| 708 | * @param label The label to be destroyed |
| 709 | * |
| 710 | * Destroy the label on an exception action. Since the object is going |
| 711 | * out of scope, policy modules should free any internal storage |
| 712 | * associated with the label so that it may be destroyed. Sleeping is |
| 713 | * permitted. |
| 714 | */ |
| 715 | typedef void mpo_exc_action_label_destroy_t( |
| 716 | struct label *label |
| 717 | ); |
| 718 | /** |
| 719 | * @brief Populate an exception action label with process credentials |
| 720 | * @param label The label to be populated |
| 721 | * @param proc Process to derive credentials from |
| 722 | * |
| 723 | * Populate a label with credentials derived from a process. At |
| 724 | * exception delivery time, the policy should compare credentials of the |
| 725 | * process that set an exception ports with the credentials of the |
| 726 | * process or corpse that experienced the exception. Note that the |
| 727 | * process that set the port may not exist at that time anymore, so |
| 728 | * labels should carry copies of live credentials if necessary. |
| 729 | */ |
| 730 | typedef void mpo_exc_action_label_populate_t( |
| 731 | struct label *label, |
| 732 | struct proc *proc |
| 733 | ); |
| 734 | /** |
| 735 | * @brief Initialize exception action label |
| 736 | * @param label New label to initialize |
| 737 | * |
| 738 | * Initialize a label for an exception action. Usually performs |
| 739 | * policy specific allocations. Sleeping is permitted. |
| 740 | */ |
| 741 | typedef int mpo_exc_action_label_init_t( |
| 742 | struct label *label |
| 743 | ); |
| 744 | /** |
| 745 | * @brief Update the label on an exception action |
| 746 | * @param action Exception action that the label belongs to (may be |
| 747 | * NULL if none) |
| 748 | * @param label Policy label to update |
| 749 | * @param newlabel New label for update |
| 750 | * |
| 751 | * Update the credentials of an exception action from the given |
| 752 | * label. The policy should copy over any credentials (process and |
| 753 | * otherwise) from the new label into the label to update. Must not |
| 754 | * sleep, must be quick and can be called with locks held. |
| 755 | */ |
| 756 | typedef int mpo_exc_action_label_update_t( |
| 757 | struct exception_action *action, |
| 758 | struct label *label, |
| 759 | struct label *newlabel |
| 760 | ); |
| 761 | /** |
| 762 | * @brief Access control for changing the offset of a file descriptor |
| 763 | * @param cred Subject credential |
| 764 | * @param fg Fileglob structure |
| 765 | * @param label Policy label for fg |
| 766 | * |
| 767 | * Determine whether the subject identified by the credential can |
| 768 | * change the offset of the file represented by fg. |
| 769 | * |
| 770 | * @return Return 0 if access if granted, otherwise an appropriate |
| 771 | * value for errno should be returned. |
| 772 | */ |
| 773 | typedef int mpo_file_check_change_offset_t( |
| 774 | kauth_cred_t cred, |
| 775 | struct fileglob *fg, |
| 776 | struct label *label |
| 777 | ); |
| 778 | /** |
| 779 | * @brief Access control for creating a file descriptor |
| 780 | * @param cred Subject credential |
| 781 | * |
| 782 | * Determine whether the subject identified by the credential can |
| 783 | * allocate a new file descriptor. |
| 784 | * |
| 785 | * @return Return 0 if access if granted, otherwise an appropriate |
| 786 | * value for errno should be returned. |
| 787 | */ |
| 788 | typedef int mpo_file_check_create_t( |
| 789 | kauth_cred_t cred |
| 790 | ); |
| 791 | /** |
| 792 | * @brief Access control for duplicating a file descriptor |
| 793 | * @param cred Subject credential |
| 794 | * @param fg Fileglob structure |
| 795 | * @param label Policy label for fg |
| 796 | * @param newfd New file descriptor number |
| 797 | * |
| 798 | * Determine whether the subject identified by the credential can |
| 799 | * duplicate the fileglob structure represented by fg and as file |
| 800 | * descriptor number newfd. |
| 801 | * |
| 802 | * @return Return 0 if access if granted, otherwise an appropriate |
| 803 | * value for errno should be returned. |
| 804 | */ |
| 805 | typedef int mpo_file_check_dup_t( |
| 806 | kauth_cred_t cred, |
| 807 | struct fileglob *fg, |
| 808 | struct label *label, |
| 809 | int newfd |
| 810 | ); |
| 811 | /** |
| 812 | * @brief Access control check for fcntl |
| 813 | * @param cred Subject credential |
| 814 | * @param fg Fileglob structure |
| 815 | * @param label Policy label for fg |
| 816 | * @param cmd Control operation to be performed; see fcntl(2) |
| 817 | * @param arg fcnt arguments; see fcntl(2) |
| 818 | * |
| 819 | * Determine whether the subject identified by the credential can perform |
| 820 | * the file control operation indicated by cmd. |
| 821 | * |
| 822 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 823 | * errno should be returned. |
| 824 | */ |
| 825 | typedef int mpo_file_check_fcntl_t( |
| 826 | kauth_cred_t cred, |
| 827 | struct fileglob *fg, |
| 828 | struct label *label, |
| 829 | int cmd, |
| 830 | user_long_t arg |
| 831 | ); |
| 832 | /** |
| 833 | * @brief Access control check for mac_get_fd |
| 834 | * @param cred Subject credential |
| 835 | * @param fg Fileglob structure |
| 836 | * @param elements Element buffer |
| 837 | * @param len Length of buffer |
| 838 | * |
| 839 | * Determine whether the subject identified by the credential should be allowed |
| 840 | * to get an externalized version of the label on the object indicated by fd. |
| 841 | * |
| 842 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 843 | * errno should be returned. |
| 844 | */ |
| 845 | typedef int mpo_file_check_get_t( |
| 846 | kauth_cred_t cred, |
| 847 | struct fileglob *fg, |
| 848 | char *elements, |
| 849 | size_t len |
| 850 | ); |
| 851 | /** |
| 852 | * @brief Access control for getting the offset of a file descriptor |
| 853 | * @param cred Subject credential |
| 854 | * @param fg Fileglob structure |
| 855 | * @param label Policy label for fg |
| 856 | * |
| 857 | * Determine whether the subject identified by the credential can |
| 858 | * get the offset of the file represented by fg. |
| 859 | * |
| 860 | * @return Return 0 if access if granted, otherwise an appropriate |
| 861 | * value for errno should be returned. |
| 862 | */ |
| 863 | typedef int mpo_file_check_get_offset_t( |
| 864 | kauth_cred_t cred, |
| 865 | struct fileglob *fg, |
| 866 | struct label *label |
| 867 | ); |
| 868 | /** |
| 869 | * @brief Access control for inheriting a file descriptor |
| 870 | * @param cred Subject credential |
| 871 | * @param fg Fileglob structure |
| 872 | * @param label Policy label for fg |
| 873 | * |
| 874 | * Determine whether the subject identified by the credential can |
| 875 | * inherit the fileglob structure represented by fg. |
| 876 | * |
| 877 | * @return Return 0 if access if granted, otherwise an appropriate |
| 878 | * value for errno should be returned. |
| 879 | */ |
| 880 | typedef int mpo_file_check_inherit_t( |
| 881 | kauth_cred_t cred, |
| 882 | struct fileglob *fg, |
| 883 | struct label *label |
| 884 | ); |
| 885 | /** |
| 886 | * @brief Access control check for file ioctl |
| 887 | * @param cred Subject credential |
| 888 | * @param fg Fileglob structure |
| 889 | * @param label Policy label for fg |
| 890 | * @param cmd The ioctl command; see ioctl(2) |
| 891 | * |
| 892 | * Determine whether the subject identified by the credential can perform |
| 893 | * the ioctl operation indicated by cmd. |
| 894 | * |
| 895 | * @warning Since ioctl data is opaque from the standpoint of the MAC |
| 896 | * framework, policies must exercise extreme care when implementing |
| 897 | * access control checks. |
| 898 | * |
| 899 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 900 | * errno should be returned. |
| 901 | * |
| 902 | */ |
| 903 | typedef int mpo_file_check_ioctl_t( |
| 904 | kauth_cred_t cred, |
| 905 | struct fileglob *fg, |
| 906 | struct label *label, |
| 907 | unsigned long cmd |
| 908 | ); |
| 909 | /** |
| 910 | * @brief Access control check for file locking |
| 911 | * @param cred Subject credential |
| 912 | * @param fg Fileglob structure |
| 913 | * @param label Policy label for fg |
| 914 | * @param op The lock operation (F_GETLK, F_SETLK, F_UNLK) |
| 915 | * @param fl The flock structure |
| 916 | * |
| 917 | * Determine whether the subject identified by the credential can perform |
| 918 | * the lock operation indicated by op and fl on the file represented by fg. |
| 919 | * |
| 920 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 921 | * errno should be returned. |
| 922 | * |
| 923 | */ |
| 924 | typedef int mpo_file_check_lock_t( |
| 925 | kauth_cred_t cred, |
| 926 | struct fileglob *fg, |
| 927 | struct label *label, |
| 928 | int op, |
| 929 | struct flock *fl |
| 930 | ); |
| 931 | /** |
| 932 | * @brief Check with library validation if a Mach-O slice is allowed to be combined into a proc. |
| 933 | * @param p Subject process |
| 934 | * @param fg Fileglob structure |
| 935 | * @param slice_offset offset of the code slice |
| 936 | * @param error_message error message returned to user-space in case of error (userspace pointer) |
| 937 | * @param error_message_size error message size |
| 938 | * |
| 939 | * It's a little odd that the MAC/kext writes into userspace since this |
| 940 | * implies there is only one MAC module that implements this, however |
| 941 | * the alternative is to allocate memory in xnu, in the hope that |
| 942 | * the MAC module will use it, or allocate in the MAC module and then |
| 943 | * free it in xnu. Neither of these is very appealing, so let's go with |
| 944 | * the slightly more hacky way. |
| 945 | * |
| 946 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 947 | * errno should be returned. |
| 948 | */ |
| 949 | typedef int mpo_file_check_library_validation_t( |
| 950 | struct proc *p, |
| 951 | struct fileglob *fg, |
| 952 | off_t slice_offset, |
| 953 | user_long_t error_message, |
| 954 | size_t error_message_size |
| 955 | ); |
| 956 | /** |
| 957 | * @brief Access control check for mapping a file |
| 958 | * @param cred Subject credential |
| 959 | * @param fg fileglob representing file to map |
| 960 | * @param label Policy label associated with vp |
| 961 | * @param prot mmap protections; see mmap(2) |
| 962 | * @param flags Type of mapped object; see mmap(2) |
| 963 | * @param maxprot Maximum rights |
| 964 | * |
| 965 | * Determine whether the subject identified by the credential should be |
| 966 | * allowed to map the file represented by fg with the protections specified |
| 967 | * in prot. The maxprot field holds the maximum permissions on the new |
| 968 | * mapping, a combination of VM_PROT_READ, VM_PROT_WRITE, and VM_PROT_EXECUTE. |
| 969 | * To avoid overriding prior access control checks, a policy should only |
| 970 | * remove flags from maxprot. |
| 971 | * |
| 972 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 973 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 974 | * EPERM for lack of privilege. |
| 975 | */ |
| 976 | typedef int mpo_file_check_mmap_t( |
| 977 | kauth_cred_t cred, |
| 978 | struct fileglob *fg, |
| 979 | struct label *label, |
| 980 | int prot, |
| 981 | int flags, |
| 982 | uint64_t file_pos, |
| 983 | int *maxprot |
| 984 | ); |
| 985 | /** |
| 986 | * @brief Downgrade the mmap protections |
| 987 | * @param cred Subject credential |
| 988 | * @param fg file to map |
| 989 | * @param label Policy label associated with vp |
| 990 | * @param prot mmap protections to be downgraded |
| 991 | * |
| 992 | * Downgrade the mmap protections based on the subject and object labels. |
| 993 | */ |
| 994 | typedef void mpo_file_check_mmap_downgrade_t( |
| 995 | kauth_cred_t cred, |
| 996 | struct fileglob *fg, |
| 997 | struct label *label, |
| 998 | int *prot |
| 999 | ); |
| 1000 | /** |
| 1001 | * @brief Access control for receiving a file descriptor |
| 1002 | * @param cred Subject credential |
| 1003 | * @param fg Fileglob structure |
| 1004 | * @param label Policy label for fg |
| 1005 | * |
| 1006 | * Determine whether the subject identified by the credential can |
| 1007 | * receive the fileglob structure represented by fg. |
| 1008 | * |
| 1009 | * @return Return 0 if access if granted, otherwise an appropriate |
| 1010 | * value for errno should be returned. |
| 1011 | */ |
| 1012 | typedef int mpo_file_check_receive_t( |
| 1013 | kauth_cred_t cred, |
| 1014 | struct fileglob *fg, |
| 1015 | struct label *label |
| 1016 | ); |
| 1017 | /** |
| 1018 | * @brief Access control check for mac_set_fd |
| 1019 | * @param cred Subject credential |
| 1020 | * @param fg Fileglob structure |
| 1021 | * @param elements Elements buffer |
| 1022 | * @param len Length of elements buffer |
| 1023 | * |
| 1024 | * Determine whether the subject identified by the credential can |
| 1025 | * perform the mac_set_fd operation. The mac_set_fd operation is used |
| 1026 | * to associate a MAC label with a file. |
| 1027 | * |
| 1028 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1029 | * errno should be returned. |
| 1030 | */ |
| 1031 | typedef int mpo_file_check_set_t( |
| 1032 | kauth_cred_t cred, |
| 1033 | struct fileglob *fg, |
| 1034 | char *elements, |
| 1035 | size_t len |
| 1036 | ); |
| 1037 | /** |
| 1038 | * @brief Inform MAC policies that file is being closed |
| 1039 | * @param cred Subject credential |
| 1040 | * @param fg Fileglob structure |
| 1041 | * @param label Policy label for fg |
| 1042 | * @param modified Boolean; 1 if file was modified, 0 otherwise |
| 1043 | * |
| 1044 | * Called when an open file is being closed, as a result of a call to |
| 1045 | * close(2), the process exiting, or exec(2) w/O_CLOEXEC set. |
| 1046 | */ |
| 1047 | typedef void mpo_file_notify_close_t( |
| 1048 | kauth_cred_t cred, |
| 1049 | struct fileglob *fg, |
| 1050 | struct label *label, |
| 1051 | int modified |
| 1052 | ); |
| 1053 | /** |
| 1054 | * @brief Create file label |
| 1055 | * @param cred Subject credential |
| 1056 | * @param fg Fileglob structure |
| 1057 | * @param label Policy label for fg |
| 1058 | */ |
| 1059 | typedef void mpo_file_label_associate_t( |
| 1060 | kauth_cred_t cred, |
| 1061 | struct fileglob *fg, |
| 1062 | struct label *label |
| 1063 | ); |
| 1064 | /** |
| 1065 | * @brief Destroy file label |
| 1066 | * @param label The label to be destroyed |
| 1067 | * |
| 1068 | * Destroy the label on a file descriptor. In this entry point, a |
| 1069 | * policy module should free any internal storage associated with |
| 1070 | * label so that it may be destroyed. |
| 1071 | */ |
| 1072 | typedef void mpo_file_label_destroy_t( |
| 1073 | struct label *label |
| 1074 | ); |
| 1075 | /** |
| 1076 | * @brief Initialize file label |
| 1077 | * @param label New label to initialize |
| 1078 | */ |
| 1079 | typedef void mpo_file_label_init_t( |
| 1080 | struct label *label |
| 1081 | ); |
| 1082 | /** |
| 1083 | * @brief Access control check for opening an I/O Kit device |
| 1084 | * @param cred Subject credential |
| 1085 | * @param user_client User client instance |
| 1086 | * @param user_client_type User client type |
| 1087 | * |
| 1088 | * Determine whether the subject identified by the credential can open an |
| 1089 | * I/O Kit device at the passed path of the passed user client class and |
| 1090 | * type. This check is performed after instantiating the user client. |
| 1091 | * See also mpo_iokit_check_open_service_t. |
| 1092 | * |
| 1093 | * @return Return 0 if access is granted, or an appropriate value for |
| 1094 | * errno should be returned. |
| 1095 | */ |
| 1096 | typedef int mpo_iokit_check_open_t( |
| 1097 | kauth_cred_t cred, |
| 1098 | io_object_t user_client, |
| 1099 | unsigned int user_client_type |
| 1100 | ); |
| 1101 | /** |
| 1102 | * @brief Access control check for opening an I/O Kit device |
| 1103 | * @param cred Subject credential |
| 1104 | * @param service Service instance |
| 1105 | * @param user_client_type User client type |
| 1106 | * |
| 1107 | * Determine whether the subject identified by the credential can open a |
| 1108 | * I/O Kit user client of the passed service and user client type. |
| 1109 | * This check is performed before instantiating the user client. See also |
| 1110 | * mpo_iokit_check_open_t. |
| 1111 | * |
| 1112 | * @return Return 0 if access is granted, or an appropriate value for |
| 1113 | * errno should be returned. |
| 1114 | */ |
| 1115 | typedef int mpo_iokit_check_open_service_t( |
| 1116 | kauth_cred_t cred, |
| 1117 | io_object_t service, |
| 1118 | unsigned int user_client_type |
| 1119 | ); |
| 1120 | /** |
| 1121 | * @brief Access control check for setting I/O Kit device properties |
| 1122 | * @param cred Subject credential |
| 1123 | * @param entry Target device |
| 1124 | * @param properties Property list |
| 1125 | * |
| 1126 | * Determine whether the subject identified by the credential can set |
| 1127 | * properties on an I/O Kit device. |
| 1128 | * |
| 1129 | * @return Return 0 if access is granted, or an appropriate value for |
| 1130 | * errno should be returned. |
| 1131 | */ |
| 1132 | typedef int mpo_iokit_check_set_properties_t( |
| 1133 | kauth_cred_t cred, |
| 1134 | io_object_t entry, |
| 1135 | io_object_t properties |
| 1136 | ); |
| 1137 | /** |
| 1138 | * @brief Indicate desire to filter I/O Kit devices properties |
| 1139 | * @param cred Subject credential |
| 1140 | * @param entry Target device |
| 1141 | * @see mpo_iokit_check_get_property_t |
| 1142 | * |
| 1143 | * Indicate whether this policy may restrict the subject credential |
| 1144 | * from reading properties of the target device. |
| 1145 | * If a policy returns success from this entry point, the |
| 1146 | * mpo_iokit_check_get_property entry point will later be called |
| 1147 | * for each property that the subject credential tries to read from |
| 1148 | * the target device. |
| 1149 | * |
| 1150 | * This entry point is primarilly to optimize bulk property reads |
| 1151 | * by skipping calls to the mpo_iokit_check_get_property entry point |
| 1152 | * for credentials / devices no MAC policy is interested in. |
| 1153 | * |
| 1154 | * @warning Even if a policy returns 0, it should behave correctly in |
| 1155 | * the presence of an invocation of mpo_iokit_check_get_property, as that |
| 1156 | * call may happen as a result of another policy requesting a transition. |
| 1157 | * |
| 1158 | * @return Non-zero if a transition is required, 0 otherwise. |
| 1159 | */ |
| 1160 | typedef int mpo_iokit_check_filter_properties_t( |
| 1161 | kauth_cred_t cred, |
| 1162 | io_object_t entry |
| 1163 | ); |
| 1164 | /** |
| 1165 | * @brief Access control check for getting I/O Kit device properties |
| 1166 | * @param cred Subject credential |
| 1167 | * @param entry Target device |
| 1168 | * @param name Property name |
| 1169 | * |
| 1170 | * Determine whether the subject identified by the credential can get |
| 1171 | * properties on an I/O Kit device. |
| 1172 | * |
| 1173 | * @return Return 0 if access is granted, or an appropriate value for |
| 1174 | * errno. |
| 1175 | */ |
| 1176 | typedef int mpo_iokit_check_get_property_t( |
| 1177 | kauth_cred_t cred, |
| 1178 | io_object_t entry, |
| 1179 | const char *name |
| 1180 | ); |
| 1181 | /** |
| 1182 | * @brief Access control check for software HID control |
| 1183 | * @param cred Subject credential |
| 1184 | * |
| 1185 | * Determine whether the subject identified by the credential can |
| 1186 | * control the HID (Human Interface Device) subsystem, such as to |
| 1187 | * post synthetic keypresses, pointer movement and clicks. |
| 1188 | * |
| 1189 | * @return Return 0 if access is granted, or an appropriate value for |
| 1190 | * errno. |
| 1191 | */ |
| 1192 | typedef int mpo_iokit_check_hid_control_t( |
| 1193 | kauth_cred_t cred |
| 1194 | ); |
| 1195 | /** |
| 1196 | * @brief Access control check for fsctl |
| 1197 | * @param cred Subject credential |
| 1198 | * @param mp The mount point |
| 1199 | * @param label Label associated with the mount point |
| 1200 | * @param cmd Filesystem-dependent request code; see fsctl(2) |
| 1201 | * |
| 1202 | * Determine whether the subject identified by the credential can perform |
| 1203 | * the volume operation indicated by com. |
| 1204 | * |
| 1205 | * @warning The fsctl() system call is directly analogous to ioctl(); since |
| 1206 | * the associated data is opaque from the standpoint of the MAC framework |
| 1207 | * and since these operations can affect many aspects of system operation, |
| 1208 | * policies must exercise extreme care when implementing access control checks. |
| 1209 | * |
| 1210 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1211 | * errno should be returned. |
| 1212 | */ |
| 1213 | typedef int mpo_mount_check_fsctl_t( |
| 1214 | kauth_cred_t cred, |
| 1215 | struct mount *mp, |
| 1216 | struct label *label, |
| 1217 | unsigned long cmd |
| 1218 | ); |
| 1219 | /** |
| 1220 | * @brief Access control check for the retrieval of file system attributes |
| 1221 | * @param cred Subject credential |
| 1222 | * @param mp The mount structure of the file system |
| 1223 | * @param vfa The attributes requested |
| 1224 | * |
| 1225 | * This entry point determines whether given subject can get information |
| 1226 | * about the given file system. This check happens during statfs() syscalls, |
| 1227 | * but is also used by other parts within the kernel such as the audit system. |
| 1228 | * |
| 1229 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1230 | * errno should be returned. |
| 1231 | * |
| 1232 | * @note Policies may change the contents of vfa to alter the list of |
| 1233 | * file system attributes returned. |
| 1234 | */ |
| 1235 | |
| 1236 | typedef int mpo_mount_check_getattr_t( |
| 1237 | kauth_cred_t cred, |
| 1238 | struct mount *mp, |
| 1239 | struct label *mp_label, |
| 1240 | struct vfs_attr *vfa |
| 1241 | ); |
| 1242 | /** |
| 1243 | * @brief Access control check for mount point relabeling |
| 1244 | * @param cred Subject credential |
| 1245 | * @param mp Object file system mount point |
| 1246 | * @param mntlabel Policy label for fle system mount point |
| 1247 | * |
| 1248 | * Determine whether the subject identified by the credential can relabel |
| 1249 | * the mount point. This call is made when a file system mount is updated. |
| 1250 | * |
| 1251 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1252 | * errno should be returned. Suggested failure: EACCES for label mismatch |
| 1253 | * or EPERM for lack of privilege. |
| 1254 | */ |
| 1255 | typedef int mpo_mount_check_label_update_t( |
| 1256 | kauth_cred_t cred, |
| 1257 | struct mount *mp, |
| 1258 | struct label *mntlabel |
| 1259 | ); |
| 1260 | /** |
| 1261 | * @brief Access control check for mounting a file system |
| 1262 | * @param cred Subject credential |
| 1263 | * @param vp Vnode that is to be the mount point |
| 1264 | * @param vlabel Label associated with the vnode |
| 1265 | * @param cnp Component name for vp |
| 1266 | * @param vfc_name Filesystem type name |
| 1267 | * |
| 1268 | * Determine whether the subject identified by the credential can perform |
| 1269 | * the mount operation on the target vnode. |
| 1270 | * |
| 1271 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1272 | * errno should be returned. |
| 1273 | */ |
| 1274 | typedef int mpo_mount_check_mount_t( |
| 1275 | kauth_cred_t cred, |
| 1276 | struct vnode *vp, |
| 1277 | struct label *vlabel, |
| 1278 | struct componentname *cnp, |
| 1279 | const char *vfc_name |
| 1280 | ); |
| 1281 | /** |
| 1282 | * @brief Access control check for mounting a file system (late) |
| 1283 | * @param cred Subject credential |
| 1284 | * @param mp Mount point |
| 1285 | * |
| 1286 | * Similar to mpo_mount_check_mount, but occurs after VFS_MOUNT has been |
| 1287 | * called, making it possible to access mnt_vfsstat.f_mntfromname and other |
| 1288 | * fields. |
| 1289 | * |
| 1290 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1291 | * errno should be returned. |
| 1292 | */ |
| 1293 | typedef int mpo_mount_check_mount_late_t( |
| 1294 | kauth_cred_t cred, |
| 1295 | struct mount *mp |
| 1296 | ); |
| 1297 | |
| 1298 | /** |
| 1299 | * @brief Access control check for quotactl |
| 1300 | * @param cred Subject credential |
| 1301 | * @param cmd The quotactl command and subcommand; see quotactl(2) |
| 1302 | * @param id The user or group ID on which cmd will operate |
| 1303 | * |
| 1304 | * Determine whether the subject identified by the credential can perform |
| 1305 | * the quotactl operation indicated by cmd. |
| 1306 | * |
| 1307 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1308 | * errno should be returned. |
| 1309 | */ |
| 1310 | typedef int mpo_mount_check_quotactl_t( |
| 1311 | kauth_cred_t cred, |
| 1312 | struct mount *mp, |
| 1313 | int cmd, |
| 1314 | int id |
| 1315 | ); |
| 1316 | /** |
| 1317 | * @brief Access control check for fs_snapshot_create |
| 1318 | * @param cred Subject credential |
| 1319 | * @mp Filesystem mount point to create snapshot of |
| 1320 | * @name Name of snapshot to create |
| 1321 | * |
| 1322 | * Determine whether the subject identified by the credential can |
| 1323 | * create a snapshot of the filesystem at the given mount point. |
| 1324 | * |
| 1325 | * @return Return 0 if access is granted, otherwise an appropriate value |
| 1326 | * for errno should be returned. |
| 1327 | */ |
| 1328 | typedef int mpo_mount_check_snapshot_create_t( |
| 1329 | kauth_cred_t cred, |
| 1330 | struct mount *mp, |
| 1331 | const char *name |
| 1332 | ); |
| 1333 | /** |
| 1334 | * @brief Access control check for fs_snapshot_delete |
| 1335 | * @param cred Subject credential |
| 1336 | * @mp Filesystem mount point to delete snapshot of |
| 1337 | * @name Name of snapshot to delete |
| 1338 | * |
| 1339 | * Determine whether the subject identified by the credential can |
| 1340 | * delete the named snapshot from the filesystem at the given |
| 1341 | * mount point. |
| 1342 | * |
| 1343 | * @return Return 0 if access is granted, otherwise an appropriate value |
| 1344 | * for errno should be returned. |
| 1345 | */ |
| 1346 | typedef int mpo_mount_check_snapshot_delete_t( |
| 1347 | kauth_cred_t cred, |
| 1348 | struct mount *mp, |
| 1349 | const char *name |
| 1350 | ); |
| 1351 | /** |
| 1352 | * @brief Access control check for fs_snapshot_mount |
| 1353 | * @param cred Subject credential |
| 1354 | * @param rvp Vnode of either the root directory of the |
| 1355 | * filesystem to mount snapshot of, or the device from |
| 1356 | * which to mount the snapshot. |
| 1357 | * @param vp Vnode that is to be the mount point |
| 1358 | * @param cnp Component name for vp |
| 1359 | * @param name Name of snapshot to mount |
| 1360 | * @param vfc_name Filesystem type name |
| 1361 | * |
| 1362 | * Determine whether the subject identified by the credential can |
| 1363 | * mount the named snapshot from the filesystem at the given |
| 1364 | * directory. |
| 1365 | * |
| 1366 | * @return Return 0 if access is granted, otherwise an appropriate value |
| 1367 | * for errno should be returned. |
| 1368 | */ |
| 1369 | typedef int mpo_mount_check_snapshot_mount_t( |
| 1370 | kauth_cred_t cred, |
| 1371 | struct vnode *rvp, |
| 1372 | struct vnode *vp, |
| 1373 | struct componentname *cnp, |
| 1374 | const char *name, |
| 1375 | const char *vfc_name |
| 1376 | ); |
| 1377 | /** |
| 1378 | * @brief Access control check for fs_snapshot_revert |
| 1379 | * @param cred Subject credential |
| 1380 | * @mp Filesystem mount point to revert to snapshot |
| 1381 | * @name Name of snapshot to revert to |
| 1382 | * |
| 1383 | * Determine whether the subject identified by the credential can |
| 1384 | * revert the filesystem at the given mount point to the named snapshot. |
| 1385 | * |
| 1386 | * @return Return 0 if access is granted, otherwise an appropriate value |
| 1387 | * for errno should be returned. |
| 1388 | */ |
| 1389 | typedef int mpo_mount_check_snapshot_revert_t( |
| 1390 | kauth_cred_t cred, |
| 1391 | struct mount *mp, |
| 1392 | const char *name |
| 1393 | ); |
| 1394 | /** |
| 1395 | * @brief Access control check remounting a filesystem |
| 1396 | * @param cred Subject credential |
| 1397 | * @param mp The mount point |
| 1398 | * @param mlabel Label currently associated with the mount point |
| 1399 | * |
| 1400 | * Determine whether the subject identified by the credential can perform |
| 1401 | * the remount operation on the target vnode. |
| 1402 | * |
| 1403 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1404 | * errno should be returned. |
| 1405 | */ |
| 1406 | typedef int mpo_mount_check_remount_t( |
| 1407 | kauth_cred_t cred, |
| 1408 | struct mount *mp, |
| 1409 | struct label *mlabel |
| 1410 | ); |
| 1411 | /** |
| 1412 | * @brief Access control check for the settting of file system attributes |
| 1413 | * @param cred Subject credential |
| 1414 | * @param mp The mount structure of the file system |
| 1415 | * @param vfa The attributes requested |
| 1416 | * |
| 1417 | * This entry point determines whether given subject can set information |
| 1418 | * about the given file system, for example the volume name. |
| 1419 | * |
| 1420 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1421 | * errno should be returned. |
| 1422 | */ |
| 1423 | |
| 1424 | typedef int mpo_mount_check_setattr_t( |
| 1425 | kauth_cred_t cred, |
| 1426 | struct mount *mp, |
| 1427 | struct label *mp_label, |
| 1428 | struct vfs_attr *vfa |
| 1429 | ); |
| 1430 | /** |
| 1431 | * @brief Access control check for file system statistics |
| 1432 | * @param cred Subject credential |
| 1433 | * @param mp Object file system mount |
| 1434 | * @param mntlabel Policy label for mp |
| 1435 | * |
| 1436 | * Determine whether the subject identified by the credential can see |
| 1437 | * the results of a statfs performed on the file system. This call may |
| 1438 | * be made in a number of situations, including during invocations of |
| 1439 | * statfs(2) and related calls, as well as to determine what file systems |
| 1440 | * to exclude from listings of file systems, such as when getfsstat(2) |
| 1441 | * is invoked. |
| 1442 | * |
| 1443 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1444 | * errno should be returned. Suggested failure: EACCES for label mismatch |
| 1445 | * or EPERM for lack of privilege. |
| 1446 | */ |
| 1447 | typedef int mpo_mount_check_stat_t( |
| 1448 | kauth_cred_t cred, |
| 1449 | struct mount *mp, |
| 1450 | struct label *mntlabel |
| 1451 | ); |
| 1452 | /** |
| 1453 | * @brief Access control check for unmounting a filesystem |
| 1454 | * @param cred Subject credential |
| 1455 | * @param mp The mount point |
| 1456 | * @param mlabel Label associated with the mount point |
| 1457 | * |
| 1458 | * Determine whether the subject identified by the credential can perform |
| 1459 | * the unmount operation on the target vnode. |
| 1460 | * |
| 1461 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1462 | * errno should be returned. |
| 1463 | */ |
| 1464 | typedef int mpo_mount_check_umount_t( |
| 1465 | kauth_cred_t cred, |
| 1466 | struct mount *mp, |
| 1467 | struct label *mlabel |
| 1468 | ); |
| 1469 | /** |
| 1470 | * @brief Create mount labels |
| 1471 | * @param cred Subject credential |
| 1472 | * @param mp Mount point of file system being mounted |
| 1473 | * @param mntlabel Label to associate with the new mount point |
| 1474 | * @see mpo_mount_label_init_t |
| 1475 | * |
| 1476 | * Fill out the labels on the mount point being created by the supplied |
| 1477 | * user credential. This call is made when file systems are first mounted. |
| 1478 | */ |
| 1479 | typedef void mpo_mount_label_associate_t( |
| 1480 | kauth_cred_t cred, |
| 1481 | struct mount *mp, |
| 1482 | struct label *mntlabel |
| 1483 | ); |
| 1484 | /** |
| 1485 | * @brief Destroy mount label |
| 1486 | * @param label The label to be destroyed |
| 1487 | * |
| 1488 | * Destroy a file system mount label. Since the |
| 1489 | * object is going out of scope, policy modules should free any |
| 1490 | * internal storage associated with the label so that it may be |
| 1491 | * destroyed. |
| 1492 | */ |
| 1493 | typedef void mpo_mount_label_destroy_t( |
| 1494 | struct label *label |
| 1495 | ); |
| 1496 | /** |
| 1497 | * @brief Externalize a mount point label |
| 1498 | * @param label Label to be externalized |
| 1499 | * @param element_name Name of the label namespace for which labels should be |
| 1500 | * externalized |
| 1501 | * @param sb String buffer to be filled with a text representation of the label |
| 1502 | * |
| 1503 | * Produce an external representation of the mount point label. An |
| 1504 | * externalized label consists of a text representation of the label |
| 1505 | * contents that can be used with user applications. Policy-agnostic |
| 1506 | * user space tools will display this externalized version. |
| 1507 | * |
| 1508 | * The policy's externalize entry points will be called only if the |
| 1509 | * policy has registered interest in the label namespace. |
| 1510 | * |
| 1511 | * @return 0 on success, return non-zero if an error occurs while |
| 1512 | * externalizing the label data. |
| 1513 | * |
| 1514 | */ |
| 1515 | typedef int mpo_mount_label_externalize_t( |
| 1516 | struct label *label, |
| 1517 | char *element_name, |
| 1518 | struct sbuf *sb |
| 1519 | ); |
| 1520 | /** |
| 1521 | * @brief Initialize mount point label |
| 1522 | * @param label New label to initialize |
| 1523 | * |
| 1524 | * Initialize the label for a newly instantiated mount structure. |
| 1525 | * This label is typically used to store a default label in the case |
| 1526 | * that the file system has been mounted singlelabel. Since some |
| 1527 | * file systems do not support persistent labels (extended attributes) |
| 1528 | * or are read-only (such as CD-ROMs), it is often necessary to store |
| 1529 | * a default label separately from the label of the mount point |
| 1530 | * itself. Sleeping is permitted. |
| 1531 | */ |
| 1532 | typedef void mpo_mount_label_init_t( |
| 1533 | struct label *label |
| 1534 | ); |
| 1535 | /** |
| 1536 | * @brief Internalize a mount point label |
| 1537 | * @param label Label to be internalized |
| 1538 | * @param element_name Name of the label namespace for which the label should |
| 1539 | * be internalized |
| 1540 | * @param element_data Text data to be internalized |
| 1541 | * |
| 1542 | * Produce a mount point file system label from an external representation. |
| 1543 | * An externalized label consists of a text representation of the label |
| 1544 | * contents that can be used with user applications. Policy-agnostic |
| 1545 | * user space tools will forward text version to the kernel for |
| 1546 | * processing by individual policy modules. |
| 1547 | * |
| 1548 | * The policy's internalize entry points will be called only if the |
| 1549 | * policy has registered interest in the label namespace. |
| 1550 | * |
| 1551 | * @return 0 on success, Otherwise, return non-zero if an error occurs |
| 1552 | * while internalizing the label data. |
| 1553 | * |
| 1554 | */ |
| 1555 | typedef int mpo_mount_label_internalize_t( |
| 1556 | struct label *label, |
| 1557 | char *element_name, |
| 1558 | char *element_data |
| 1559 | ); |
| 1560 | /** |
| 1561 | * @brief Access control check for opening an NECP file descriptor |
| 1562 | * @param cred Subject credential |
| 1563 | * @param flags Open flags |
| 1564 | * |
| 1565 | * Determine whether the subject identified by the credential can open |
| 1566 | * an NECP file descriptor. |
| 1567 | * |
| 1568 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1569 | * errno should be returned. |
| 1570 | * |
| 1571 | */ |
| 1572 | typedef int mpo_necp_check_open_t( |
| 1573 | kauth_cred_t cred, |
| 1574 | int flags |
| 1575 | ); |
| 1576 | /** |
| 1577 | * @brief Access control check for necp_client_action(2) |
| 1578 | * @param cred Subject credential |
| 1579 | * @param fg NECP fileglob |
| 1580 | * @param action NECP client action |
| 1581 | * |
| 1582 | * Determine whether the subject identified by the credential can open |
| 1583 | * an NECP socket. |
| 1584 | * |
| 1585 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1586 | * errno should be returned. |
| 1587 | * |
| 1588 | */ |
| 1589 | typedef int mpo_necp_check_client_action_t( |
| 1590 | kauth_cred_t cred, |
| 1591 | struct fileglob *fg, |
| 1592 | uint32_t action |
| 1593 | ); |
| 1594 | /** |
| 1595 | * @brief Access control check for pipe ioctl |
| 1596 | * @param cred Subject credential |
| 1597 | * @param cpipe Object to be accessed |
| 1598 | * @param pipelabel The label on the pipe |
| 1599 | * @param cmd The ioctl command; see ioctl(2) |
| 1600 | * |
| 1601 | * Determine whether the subject identified by the credential can perform |
| 1602 | * the ioctl operation indicated by cmd. |
| 1603 | * |
| 1604 | * @warning Since ioctl data is opaque from the standpoint of the MAC |
| 1605 | * framework, policies must exercise extreme care when implementing |
| 1606 | * access control checks. |
| 1607 | * |
| 1608 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1609 | * errno should be returned. |
| 1610 | * |
| 1611 | */ |
| 1612 | typedef int mpo_pipe_check_ioctl_t( |
| 1613 | kauth_cred_t cred, |
| 1614 | struct pipe *cpipe, |
| 1615 | struct label *pipelabel, |
| 1616 | unsigned long cmd |
| 1617 | ); |
| 1618 | /** |
| 1619 | * @brief Access control check for pipe kqfilter |
| 1620 | * @param cred Subject credential |
| 1621 | * @param kn Object knote |
| 1622 | * @param cpipe Object to be accessed |
| 1623 | * @param pipelabel Policy label for the pipe |
| 1624 | * |
| 1625 | * Determine whether the subject identified by the credential can |
| 1626 | * receive the knote on the passed pipe. |
| 1627 | * |
| 1628 | * @return Return 0 if access if granted, otherwise an appropriate |
| 1629 | * value for errno should be returned. |
| 1630 | */ |
| 1631 | typedef int mpo_pipe_check_kqfilter_t( |
| 1632 | kauth_cred_t cred, |
| 1633 | struct knote *kn, |
| 1634 | struct pipe *cpipe, |
| 1635 | struct label *pipelabel |
| 1636 | ); |
| 1637 | /** |
| 1638 | * @brief Access control check for pipe read |
| 1639 | * @param cred Subject credential |
| 1640 | * @param cpipe Object to be accessed |
| 1641 | * @param pipelabel The label on the pipe |
| 1642 | * |
| 1643 | * Determine whether the subject identified by the credential can |
| 1644 | * perform a read operation on the passed pipe. The cred object holds |
| 1645 | * the credentials of the subject performing the operation. |
| 1646 | * |
| 1647 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1648 | * errno should be returned. |
| 1649 | * |
| 1650 | */ |
| 1651 | typedef int mpo_pipe_check_read_t( |
| 1652 | kauth_cred_t cred, |
| 1653 | struct pipe *cpipe, |
| 1654 | struct label *pipelabel |
| 1655 | ); |
| 1656 | /** |
| 1657 | * @brief Access control check for pipe select |
| 1658 | * @param cred Subject credential |
| 1659 | * @param cpipe Object to be accessed |
| 1660 | * @param pipelabel The label on the pipe |
| 1661 | * @param which The operation selected on: FREAD or FWRITE |
| 1662 | * |
| 1663 | * Determine whether the subject identified by the credential can |
| 1664 | * perform a select operation on the passed pipe. The cred object holds |
| 1665 | * the credentials of the subject performing the operation. |
| 1666 | * |
| 1667 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1668 | * errno should be returned. |
| 1669 | * |
| 1670 | */ |
| 1671 | typedef int mpo_pipe_check_select_t( |
| 1672 | kauth_cred_t cred, |
| 1673 | struct pipe *cpipe, |
| 1674 | struct label *pipelabel, |
| 1675 | int which |
| 1676 | ); |
| 1677 | /** |
| 1678 | * @brief Access control check for pipe stat |
| 1679 | * @param cred Subject credential |
| 1680 | * @param cpipe Object to be accessed |
| 1681 | * @param pipelabel The label on the pipe |
| 1682 | * |
| 1683 | * Determine whether the subject identified by the credential can |
| 1684 | * perform a stat operation on the passed pipe. The cred object holds |
| 1685 | * the credentials of the subject performing the operation. |
| 1686 | * |
| 1687 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1688 | * errno should be returned. |
| 1689 | * |
| 1690 | */ |
| 1691 | typedef int mpo_pipe_check_stat_t( |
| 1692 | kauth_cred_t cred, |
| 1693 | struct pipe *cpipe, |
| 1694 | struct label *pipelabel |
| 1695 | ); |
| 1696 | /** |
| 1697 | * @brief Access control check for pipe write |
| 1698 | * @param cred Subject credential |
| 1699 | * @param cpipe Object to be accessed |
| 1700 | * @param pipelabel The label on the pipe |
| 1701 | * |
| 1702 | * Determine whether the subject identified by the credential can |
| 1703 | * perform a write operation on the passed pipe. The cred object holds |
| 1704 | * the credentials of the subject performing the operation. |
| 1705 | * |
| 1706 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1707 | * errno should be returned. |
| 1708 | * |
| 1709 | */ |
| 1710 | typedef int mpo_pipe_check_write_t( |
| 1711 | kauth_cred_t cred, |
| 1712 | struct pipe *cpipe, |
| 1713 | struct label *pipelabel |
| 1714 | ); |
| 1715 | /** |
| 1716 | * @brief Create a pipe label |
| 1717 | * @param cred Subject credential |
| 1718 | * @param cpipe object to be labeled |
| 1719 | * @param pipelabel Label for the pipe object |
| 1720 | * |
| 1721 | * Create a label for the pipe object being created by the supplied |
| 1722 | * user credential. This call is made when a pipe pair is being created. |
| 1723 | * The label is shared by both ends of the pipe. |
| 1724 | */ |
| 1725 | typedef void mpo_pipe_label_associate_t( |
| 1726 | kauth_cred_t cred, |
| 1727 | struct pipe *cpipe, |
| 1728 | struct label *pipelabel |
| 1729 | ); |
| 1730 | /** |
| 1731 | * @brief Destroy pipe label |
| 1732 | * @param label The label to be destroyed |
| 1733 | * |
| 1734 | * Destroy a pipe label. Since the object is going out of scope, |
| 1735 | * policy modules should free any internal storage associated with the |
| 1736 | * label so that it may be destroyed. |
| 1737 | */ |
| 1738 | typedef void mpo_pipe_label_destroy_t( |
| 1739 | struct label *label |
| 1740 | ); |
| 1741 | /** |
| 1742 | * @brief Initialize pipe label |
| 1743 | * @param label New label to initialize |
| 1744 | * |
| 1745 | * Initialize label storage for use with a newly instantiated pipe object. |
| 1746 | * Sleeping is permitted. |
| 1747 | */ |
| 1748 | typedef void mpo_pipe_label_init_t( |
| 1749 | struct label *label |
| 1750 | ); |
| 1751 | /** |
| 1752 | * @brief Policy unload event |
| 1753 | * @param mpc MAC policy configuration |
| 1754 | * |
| 1755 | * This is the MAC Framework policy unload event. This entry point will |
| 1756 | * only be called if the module's policy configuration allows unload (if |
| 1757 | * the MPC_LOADTIME_FLAG_UNLOADOK is set). Most security policies won't |
| 1758 | * want to be unloaded; they should set their flags to prevent this |
| 1759 | * entry point from being called. |
| 1760 | * |
| 1761 | * @warning During this call, the mac policy list mutex is held, so |
| 1762 | * sleep operations cannot be performed, and calls out to other kernel |
| 1763 | * subsystems must be made with caution. |
| 1764 | * |
| 1765 | * @see MPC_LOADTIME_FLAG_UNLOADOK |
| 1766 | */ |
| 1767 | typedef void mpo_policy_destroy_t( |
| 1768 | struct mac_policy_conf *mpc |
| 1769 | ); |
| 1770 | /** |
| 1771 | * @brief Policy initialization event |
| 1772 | * @param mpc MAC policy configuration |
| 1773 | * @see mac_policy_register |
| 1774 | * @see mpo_policy_initbsd_t |
| 1775 | * |
| 1776 | * This is the MAC Framework policy initialization event. This entry |
| 1777 | * point is called during mac_policy_register, when the policy module |
| 1778 | * is first registered with the MAC Framework. This is often done very |
| 1779 | * early in the boot process, after the kernel Mach subsystem has been |
| 1780 | * initialized, but prior to the BSD subsystem being initialized. |
| 1781 | * Since the kernel BSD services are not yet available, it is possible |
| 1782 | * that some initialization must occur later, possibly in the |
| 1783 | * mpo_policy_initbsd_t policy entry point, such as registering BSD system |
| 1784 | * controls (sysctls). Policy modules loaded at boot time will be |
| 1785 | * registered and initialized before labeled Mach objects are created. |
| 1786 | * |
| 1787 | * @warning During this call, the mac policy list mutex is held, so |
| 1788 | * sleep operations cannot be performed, and calls out to other kernel |
| 1789 | * subsystems must be made with caution. |
| 1790 | */ |
| 1791 | typedef void mpo_policy_init_t( |
| 1792 | struct mac_policy_conf *mpc |
| 1793 | ); |
| 1794 | /** |
| 1795 | * @brief Policy BSD initialization event |
| 1796 | * @param mpc MAC policy configuration |
| 1797 | * @see mpo_policy_init_t |
| 1798 | * |
| 1799 | * This entry point is called after the kernel BSD subsystem has been |
| 1800 | * initialized. By this point, the module should already be loaded, |
| 1801 | * registered, and initialized. Since policy modules are initialized |
| 1802 | * before kernel BSD services are available, this second initialization |
| 1803 | * phase is necessary. At this point, BSD services (memory management, |
| 1804 | * synchronization primitives, vfs, etc.) are available, but the first |
| 1805 | * process has not yet been created. Mach-related objects and tasks |
| 1806 | * will already be fully initialized and may be in use--policies requiring |
| 1807 | * ubiquitous labeling may also want to implement mpo_policy_init_t. |
| 1808 | * |
| 1809 | * @warning During this call, the mac policy list mutex is held, so |
| 1810 | * sleep operations cannot be performed, and calls out to other kernel |
| 1811 | * subsystems must be made with caution. |
| 1812 | */ |
| 1813 | typedef void mpo_policy_initbsd_t( |
| 1814 | struct mac_policy_conf *mpc |
| 1815 | ); |
| 1816 | /** |
| 1817 | * @brief Policy extension service |
| 1818 | * @param p Calling process |
| 1819 | * @param call Policy-specific syscall number |
| 1820 | * @param arg Pointer to syscall arguments |
| 1821 | * |
| 1822 | * This entry point provides a policy-multiplexed system call so that |
| 1823 | * policies may provide additional services to user processes without |
| 1824 | * registering specific system calls. The policy name provided during |
| 1825 | * registration is used to demux calls from userland, and the arguments |
| 1826 | * will be forwarded to this entry point. When implementing new |
| 1827 | * services, security modules should be sure to invoke appropriate |
| 1828 | * access control checks from the MAC framework as needed. For |
| 1829 | * example, if a policy implements an augmented signal functionality, |
| 1830 | * it should call the necessary signal access control checks to invoke |
| 1831 | * the MAC framework and other registered policies. |
| 1832 | * |
| 1833 | * @warning Since the format and contents of the policy-specific |
| 1834 | * arguments are unknown to the MAC Framework, modules must perform the |
| 1835 | * required copyin() of the syscall data on their own. No policy |
| 1836 | * mediation is performed, so policies must perform any necessary |
| 1837 | * access control checks themselves. If multiple policies are loaded, |
| 1838 | * they will currently be unable to mediate calls to other policies. |
| 1839 | * |
| 1840 | * @return In the event of an error, an appropriate value for errno |
| 1841 | * should be returned, otherwise return 0 upon success. |
| 1842 | */ |
| 1843 | typedef int mpo_policy_syscall_t( |
| 1844 | struct proc *p, |
| 1845 | int call, |
| 1846 | user_addr_t arg |
| 1847 | ); |
| 1848 | /** |
| 1849 | * @brief Access control check for POSIX semaphore create |
| 1850 | * @param cred Subject credential |
| 1851 | * @param name String name of the semaphore |
| 1852 | * |
| 1853 | * Determine whether the subject identified by the credential can create |
| 1854 | * a POSIX semaphore specified by name. |
| 1855 | * |
| 1856 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1857 | * errno should be returned. |
| 1858 | */ |
| 1859 | typedef int mpo_posixsem_check_create_t( |
| 1860 | kauth_cred_t cred, |
| 1861 | const char *name |
| 1862 | ); |
| 1863 | /** |
| 1864 | * @brief Access control check for POSIX semaphore open |
| 1865 | * @param cred Subject credential |
| 1866 | * @param ps Pointer to semaphore information structure |
| 1867 | * @param semlabel Label associated with the semaphore |
| 1868 | * |
| 1869 | * Determine whether the subject identified by the credential can open |
| 1870 | * the named POSIX semaphore with label semlabel. |
| 1871 | * |
| 1872 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1873 | * errno should be returned. |
| 1874 | */ |
| 1875 | typedef int mpo_posixsem_check_open_t( |
| 1876 | kauth_cred_t cred, |
| 1877 | struct pseminfo *ps, |
| 1878 | struct label *semlabel |
| 1879 | ); |
| 1880 | /** |
| 1881 | * @brief Access control check for POSIX semaphore post |
| 1882 | * @param cred Subject credential |
| 1883 | * @param ps Pointer to semaphore information structure |
| 1884 | * @param semlabel Label associated with the semaphore |
| 1885 | * |
| 1886 | * Determine whether the subject identified by the credential can unlock |
| 1887 | * the named POSIX semaphore with label semlabel. |
| 1888 | * |
| 1889 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1890 | * errno should be returned. |
| 1891 | */ |
| 1892 | typedef int mpo_posixsem_check_post_t( |
| 1893 | kauth_cred_t cred, |
| 1894 | struct pseminfo *ps, |
| 1895 | struct label *semlabel |
| 1896 | ); |
| 1897 | /** |
| 1898 | * @brief Access control check for POSIX semaphore unlink |
| 1899 | * @param cred Subject credential |
| 1900 | * @param ps Pointer to semaphore information structure |
| 1901 | * @param semlabel Label associated with the semaphore |
| 1902 | * @param name String name of the semaphore |
| 1903 | * |
| 1904 | * Determine whether the subject identified by the credential can remove |
| 1905 | * the named POSIX semaphore with label semlabel. |
| 1906 | * |
| 1907 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1908 | * errno should be returned. |
| 1909 | */ |
| 1910 | typedef int mpo_posixsem_check_unlink_t( |
| 1911 | kauth_cred_t cred, |
| 1912 | struct pseminfo *ps, |
| 1913 | struct label *semlabel, |
| 1914 | const char *name |
| 1915 | ); |
| 1916 | /** |
| 1917 | * @brief Access control check for POSIX semaphore wait |
| 1918 | * @param cred Subject credential |
| 1919 | * @param ps Pointer to semaphore information structure |
| 1920 | * @param semlabel Label associated with the semaphore |
| 1921 | * |
| 1922 | * Determine whether the subject identified by the credential can lock |
| 1923 | * the named POSIX semaphore with label semlabel. |
| 1924 | * |
| 1925 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1926 | * errno should be returned. |
| 1927 | */ |
| 1928 | typedef int mpo_posixsem_check_wait_t( |
| 1929 | kauth_cred_t cred, |
| 1930 | struct pseminfo *ps, |
| 1931 | struct label *semlabel |
| 1932 | ); |
| 1933 | /** |
| 1934 | * @brief Create a POSIX semaphore label |
| 1935 | * @param cred Subject credential |
| 1936 | * @param ps Pointer to semaphore information structure |
| 1937 | * @param semlabel Label to associate with the new semaphore |
| 1938 | * @param name String name of the semaphore |
| 1939 | * |
| 1940 | * Label a new POSIX semaphore. The label was previously |
| 1941 | * initialized and associated with the semaphore. At this time, an |
| 1942 | * appropriate initial label value should be assigned to the object and |
| 1943 | * stored in semalabel. |
| 1944 | */ |
| 1945 | typedef void mpo_posixsem_label_associate_t( |
| 1946 | kauth_cred_t cred, |
| 1947 | struct pseminfo *ps, |
| 1948 | struct label *semlabel, |
| 1949 | const char *name |
| 1950 | ); |
| 1951 | /** |
| 1952 | * @brief Destroy POSIX semaphore label |
| 1953 | * @param label The label to be destroyed |
| 1954 | * |
| 1955 | * Destroy a POSIX semaphore label. Since the object is |
| 1956 | * going out of scope, policy modules should free any internal storage |
| 1957 | * associated with the label so that it may be destroyed. |
| 1958 | */ |
| 1959 | typedef void mpo_posixsem_label_destroy_t( |
| 1960 | struct label *label |
| 1961 | ); |
| 1962 | /** |
| 1963 | * @brief Initialize POSIX semaphore label |
| 1964 | * @param label New label to initialize |
| 1965 | * |
| 1966 | * Initialize the label for a newly instantiated POSIX semaphore. Sleeping |
| 1967 | * is permitted. |
| 1968 | */ |
| 1969 | typedef void mpo_posixsem_label_init_t( |
| 1970 | struct label *label |
| 1971 | ); |
| 1972 | /** |
| 1973 | * @brief Access control check for POSIX shared memory region create |
| 1974 | * @param cred Subject credential |
| 1975 | * @param name String name of the shared memory region |
| 1976 | * |
| 1977 | * Determine whether the subject identified by the credential can create |
| 1978 | * the POSIX shared memory region referenced by name. |
| 1979 | * |
| 1980 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1981 | * errno should be returned. |
| 1982 | */ |
| 1983 | typedef int mpo_posixshm_check_create_t( |
| 1984 | kauth_cred_t cred, |
| 1985 | const char *name |
| 1986 | ); |
| 1987 | /** |
| 1988 | * @brief Access control check for mapping POSIX shared memory |
| 1989 | * @param cred Subject credential |
| 1990 | * @param ps Pointer to shared memory information structure |
| 1991 | * @param shmlabel Label associated with the shared memory region |
| 1992 | * @param prot mmap protections; see mmap(2) |
| 1993 | * @param flags shmat flags; see shmat(2) |
| 1994 | * |
| 1995 | * Determine whether the subject identified by the credential can map |
| 1996 | * the POSIX shared memory segment associated with shmlabel. |
| 1997 | * |
| 1998 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 1999 | * errno should be returned. |
| 2000 | */ |
| 2001 | typedef int mpo_posixshm_check_mmap_t( |
| 2002 | kauth_cred_t cred, |
| 2003 | struct pshminfo *ps, |
| 2004 | struct label *shmlabel, |
| 2005 | int prot, |
| 2006 | int flags |
| 2007 | ); |
| 2008 | /** |
| 2009 | * @brief Access control check for POSIX shared memory region open |
| 2010 | * @param cred Subject credential |
| 2011 | * @param ps Pointer to shared memory information structure |
| 2012 | * @param shmlabel Label associated with the shared memory region |
| 2013 | * @param fflags shm_open(2) open flags ('fflags' encoded) |
| 2014 | * |
| 2015 | * Determine whether the subject identified by the credential can open |
| 2016 | * the POSIX shared memory region. |
| 2017 | * |
| 2018 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2019 | * errno should be returned. |
| 2020 | */ |
| 2021 | typedef int mpo_posixshm_check_open_t( |
| 2022 | kauth_cred_t cred, |
| 2023 | struct pshminfo *ps, |
| 2024 | struct label *shmlabel, |
| 2025 | int fflags |
| 2026 | ); |
| 2027 | /** |
| 2028 | * @brief Access control check for POSIX shared memory stat |
| 2029 | * @param cred Subject credential |
| 2030 | * @param ps Pointer to shared memory information structure |
| 2031 | * @param shmlabel Label associated with the shared memory region |
| 2032 | * |
| 2033 | * Determine whether the subject identified by the credential can obtain |
| 2034 | * status for the POSIX shared memory segment associated with shmlabel. |
| 2035 | * |
| 2036 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2037 | * errno should be returned. |
| 2038 | */ |
| 2039 | typedef int mpo_posixshm_check_stat_t( |
| 2040 | kauth_cred_t cred, |
| 2041 | struct pshminfo *ps, |
| 2042 | struct label *shmlabel |
| 2043 | ); |
| 2044 | /** |
| 2045 | * @brief Access control check for POSIX shared memory truncate |
| 2046 | * @param cred Subject credential |
| 2047 | * @param ps Pointer to shared memory information structure |
| 2048 | * @param shmlabel Label associated with the shared memory region |
| 2049 | * @param len Length to truncate or extend shared memory segment |
| 2050 | * |
| 2051 | * Determine whether the subject identified by the credential can truncate |
| 2052 | * or extend (to len) the POSIX shared memory segment associated with shmlabel. |
| 2053 | * |
| 2054 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2055 | * errno should be returned. |
| 2056 | */ |
| 2057 | typedef int mpo_posixshm_check_truncate_t( |
| 2058 | kauth_cred_t cred, |
| 2059 | struct pshminfo *ps, |
| 2060 | struct label *shmlabel, |
| 2061 | off_t len |
| 2062 | ); |
| 2063 | /** |
| 2064 | * @brief Access control check for POSIX shared memory unlink |
| 2065 | * @param cred Subject credential |
| 2066 | * @param ps Pointer to shared memory information structure |
| 2067 | * @param shmlabel Label associated with the shared memory region |
| 2068 | * @param name String name of the shared memory region |
| 2069 | * |
| 2070 | * Determine whether the subject identified by the credential can delete |
| 2071 | * the POSIX shared memory segment associated with shmlabel. |
| 2072 | * |
| 2073 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2074 | * errno should be returned. |
| 2075 | */ |
| 2076 | typedef int mpo_posixshm_check_unlink_t( |
| 2077 | kauth_cred_t cred, |
| 2078 | struct pshminfo *ps, |
| 2079 | struct label *shmlabel, |
| 2080 | const char *name |
| 2081 | ); |
| 2082 | /** |
| 2083 | * @brief Create a POSIX shared memory region label |
| 2084 | * @param cred Subject credential |
| 2085 | * @param ps Pointer to shared memory information structure |
| 2086 | * @param shmlabel Label to associate with the new shared memory region |
| 2087 | * @param name String name of the shared memory region |
| 2088 | * |
| 2089 | * Label a new POSIX shared memory region. The label was previously |
| 2090 | * initialized and associated with the shared memory region. At this |
| 2091 | * time, an appropriate initial label value should be assigned to the |
| 2092 | * object and stored in shmlabel. |
| 2093 | */ |
| 2094 | typedef void mpo_posixshm_label_associate_t( |
| 2095 | kauth_cred_t cred, |
| 2096 | struct pshminfo *ps, |
| 2097 | struct label *shmlabel, |
| 2098 | const char *name |
| 2099 | ); |
| 2100 | /** |
| 2101 | * @brief Destroy POSIX shared memory label |
| 2102 | * @param label The label to be destroyed |
| 2103 | * |
| 2104 | * Destroy a POSIX shared memory region label. Since the |
| 2105 | * object is going out of scope, policy modules should free any |
| 2106 | * internal storage associated with the label so that it may be |
| 2107 | * destroyed. |
| 2108 | */ |
| 2109 | typedef void mpo_posixshm_label_destroy_t( |
| 2110 | struct label *label |
| 2111 | ); |
| 2112 | /** |
| 2113 | * @brief Initialize POSIX Shared Memory region label |
| 2114 | * @param label New label to initialize |
| 2115 | * |
| 2116 | * Initialize the label for newly a instantiated POSIX Shared Memory |
| 2117 | * region. Sleeping is permitted. |
| 2118 | */ |
| 2119 | typedef void mpo_posixshm_label_init_t( |
| 2120 | struct label *label |
| 2121 | ); |
| 2122 | /** |
| 2123 | * @brief Access control check for privileged operations |
| 2124 | * @param cred Subject credential |
| 2125 | * @param priv Requested privilege (see sys/priv.h) |
| 2126 | * |
| 2127 | * Determine whether the subject identified by the credential can perform |
| 2128 | * a privileged operation. Privileged operations are allowed if the cred |
| 2129 | * is the superuser or any policy returns zero for mpo_priv_grant, unless |
| 2130 | * any policy returns nonzero for mpo_priv_check. |
| 2131 | * |
| 2132 | * @return Return 0 if access is granted, otherwise EPERM should be returned. |
| 2133 | */ |
| 2134 | typedef int mpo_priv_check_t( |
| 2135 | kauth_cred_t cred, |
| 2136 | int priv |
| 2137 | ); |
| 2138 | /** |
| 2139 | * @brief Grant regular users the ability to perform privileged operations |
| 2140 | * @param cred Subject credential |
| 2141 | * @param priv Requested privilege (see sys/priv.h) |
| 2142 | * |
| 2143 | * Determine whether the subject identified by the credential should be |
| 2144 | * allowed to perform a privileged operation that in the absense of any |
| 2145 | * MAC policy it would not be able to perform. Privileged operations are |
| 2146 | * allowed if the cred is the superuser or any policy returns zero for |
| 2147 | * mpo_priv_grant, unless any policy returns nonzero for mpo_priv_check. |
| 2148 | * |
| 2149 | * Unlike other MAC hooks which can only reduce the privilege of a |
| 2150 | * credential, this hook raises the privilege of a credential when it |
| 2151 | * returns 0. Extreme care must be taken when implementing this hook to |
| 2152 | * avoid undermining the security of the system. |
| 2153 | * |
| 2154 | * @return Return 0 if additional privilege is granted, otherwise EPERM |
| 2155 | * should be returned. |
| 2156 | */ |
| 2157 | typedef int mpo_priv_grant_t( |
| 2158 | kauth_cred_t cred, |
| 2159 | int priv |
| 2160 | ); |
| 2161 | /** |
| 2162 | * @brief Access control over process core dumps |
| 2163 | * @param proc Subject process |
| 2164 | * |
| 2165 | * Determine whether a core dump may be written to disk for the subject |
| 2166 | * identified. |
| 2167 | * |
| 2168 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2169 | * errno should be returned. |
| 2170 | */ |
| 2171 | typedef int mpo_proc_check_dump_core_t( |
| 2172 | struct proc *proc |
| 2173 | ); |
| 2174 | /** |
| 2175 | * @brief Access control over remote thread creation |
| 2176 | * @param cred Subject credential |
| 2177 | * @param proc Object process |
| 2178 | * @param flavor Flavor of thread state passed in new_state, or -1 |
| 2179 | * @param new_state Thread state to be set on the created thread, or NULL |
| 2180 | * @param new_state_count Size of thread state, in natural_t units, or 0 |
| 2181 | * |
| 2182 | * Determine whether the subject can create a thread in the object process |
| 2183 | * by calling the thread_create or thread_create_running MIG routines on |
| 2184 | * another process' task port. For thread_create_running, the flavor, |
| 2185 | * new_state and new_state_count arguments are passed here before they are |
| 2186 | * converted and checked by machine-dependent code. |
| 2187 | * |
| 2188 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2189 | * errno should be returned. |
| 2190 | */ |
| 2191 | typedef int mpo_proc_check_remote_thread_create_t( |
| 2192 | kauth_cred_t cred, |
| 2193 | struct proc *proc, |
| 2194 | int flavor, |
| 2195 | thread_state_t new_state, |
| 2196 | mach_msg_type_number_t new_state_count |
| 2197 | ); |
| 2198 | /** |
| 2199 | * @brief Access control check for debugging process |
| 2200 | * @param cred Subject credential |
| 2201 | * @param pident Object unique process identifier |
| 2202 | * |
| 2203 | * Determine whether the subject identified by the credential can debug |
| 2204 | * the passed process. This call may be made in a number of situations, |
| 2205 | * including use of the ptrace(2) and ktrace(2) APIs, as well as for some |
| 2206 | * types of procfs operations. |
| 2207 | * |
| 2208 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2209 | * errno should be returned. Suggested failure: EACCES for label mismatch, |
| 2210 | * EPERM for lack of privilege, or ESRCH to hide visibility of the target. |
| 2211 | */ |
| 2212 | typedef int mpo_proc_check_debug_t( |
| 2213 | kauth_cred_t cred, |
| 2214 | struct proc_ident *pident |
| 2215 | ); |
| 2216 | /** |
| 2217 | * @brief Access control over fork |
| 2218 | * @param cred Subject credential |
| 2219 | * @param proc Subject process trying to fork |
| 2220 | * |
| 2221 | * Determine whether the subject identified is allowed to fork. |
| 2222 | * |
| 2223 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2224 | * errno should be returned. |
| 2225 | */ |
| 2226 | typedef int mpo_proc_check_fork_t( |
| 2227 | kauth_cred_t cred, |
| 2228 | struct proc *proc |
| 2229 | ); |
| 2230 | /** |
| 2231 | * @brief Access control check for setting host special ports. |
| 2232 | * @param cred Subject credential |
| 2233 | * @param id The host special port to set |
| 2234 | * @param port The new value to set for the special port |
| 2235 | * |
| 2236 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2237 | * errno should be returned. |
| 2238 | */ |
| 2239 | typedef int mpo_proc_check_set_host_special_port_t( |
| 2240 | kauth_cred_t cred, |
| 2241 | int id, |
| 2242 | struct ipc_port *port |
| 2243 | ); |
| 2244 | /** |
| 2245 | * @brief Access control check for setting host exception ports. |
| 2246 | * @param cred Subject credential |
| 2247 | * @param exception Exception port to set |
| 2248 | * |
| 2249 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2250 | * errno should be returned. |
| 2251 | */ |
| 2252 | typedef int mpo_proc_check_set_host_exception_port_t( |
| 2253 | kauth_cred_t cred, |
| 2254 | unsigned int exception |
| 2255 | ); |
| 2256 | /** |
| 2257 | * @brief Access control check for getting task special ports. |
| 2258 | * @param cred Subject credential |
| 2259 | * @param pident Object unique process identifier, NULL if target is a corpse task |
| 2260 | * @param which The task special port to get |
| 2261 | * |
| 2262 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2263 | * errno should be returned. |
| 2264 | */ |
| 2265 | typedef int mpo_proc_check_get_task_special_port_t( |
| 2266 | kauth_cred_t cred, |
| 2267 | struct proc_ident *pident, |
| 2268 | int which |
| 2269 | ); |
| 2270 | /** |
| 2271 | * @brief Access control check for setting task special ports. |
| 2272 | * @param cred Subject credential |
| 2273 | * @param pident Object unique process identifier |
| 2274 | * @param which The task special port to set |
| 2275 | * @param port The new value to set for the special port |
| 2276 | * |
| 2277 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2278 | * errno should be returned. |
| 2279 | */ |
| 2280 | typedef int mpo_proc_check_set_task_special_port_t( |
| 2281 | kauth_cred_t cred, |
| 2282 | struct proc_ident *pident, |
| 2283 | int which, |
| 2284 | struct ipc_port *port |
| 2285 | ); |
| 2286 | /** |
| 2287 | * @brief Access control check for getting movable task/thread control port for current task. |
| 2288 | * @param cred Subject credential |
| 2289 | * |
| 2290 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2291 | * errno should be returned. |
| 2292 | */ |
| 2293 | typedef int mpo_proc_check_get_movable_control_port_t( |
| 2294 | kauth_cred_t cred |
| 2295 | ); |
| 2296 | /** |
| 2297 | * @brief Access control check for calling task_dyld_process_info_notify_register |
| 2298 | * and task_dyld_process_info_notify_deregister. |
| 2299 | * @param cred Subject credential |
| 2300 | * |
| 2301 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2302 | * errno should be returned. |
| 2303 | */ |
| 2304 | typedef int mpo_proc_check_dyld_process_info_notify_register_t( |
| 2305 | kauth_cred_t cred |
| 2306 | ); |
| 2307 | /** |
| 2308 | * @brief Access control over pid_suspend, pid_resume and family |
| 2309 | * @param cred Subject credential |
| 2310 | * @param proc Object process |
| 2311 | * @param sr Type of call; one of MAC_PROC_CHECK_SUSPEND, |
| 2312 | * MAC_PROC_CHECK_RESUME, MAC_PROC_CHECK_HIBERNATE, |
| 2313 | * MAC_PROC_CHECK_SHUTDOWN_SOCKETS or MAC_PROC_CHECK_PIDBIND. |
| 2314 | * |
| 2315 | * Determine whether the subject identified is allowed to call pid_suspend, |
| 2316 | * pid_resume, pid_hibernate, pid_shutdown_sockets, |
| 2317 | * process_policy(PROC_POLICY_APP_LIFECYCLE, PROC_POLICY_APPLIFE_DEVSTATUS) or |
| 2318 | * process_policy(PROC_POLICY_APP_LIFECYCLE, PROC_POLICY_APPLIFE_PIDBIND) on |
| 2319 | * the object process. |
| 2320 | * |
| 2321 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2322 | * errno should be returned. |
| 2323 | */ |
| 2324 | typedef int mpo_proc_check_suspend_resume_t( |
| 2325 | kauth_cred_t cred, |
| 2326 | struct proc *proc, |
| 2327 | int sr |
| 2328 | ); |
| 2329 | /** |
| 2330 | * @brief Access control check for retrieving audit information |
| 2331 | * @param cred Subject credential |
| 2332 | * |
| 2333 | * Determine whether the subject identified by the credential can get |
| 2334 | * audit information such as the audit user ID, the preselection mask, |
| 2335 | * the terminal ID and the audit session ID, using the getaudit() system call. |
| 2336 | * |
| 2337 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2338 | * errno should be returned. |
| 2339 | */ |
| 2340 | typedef int mpo_proc_check_getaudit_t( |
| 2341 | kauth_cred_t cred |
| 2342 | ); |
| 2343 | /** |
| 2344 | * @brief Access control check for retrieving audit user ID |
| 2345 | * @param cred Subject credential |
| 2346 | * |
| 2347 | * Determine whether the subject identified by the credential can get |
| 2348 | * the user identity being used by the auditing system, using the getauid() |
| 2349 | * system call. |
| 2350 | * |
| 2351 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2352 | * errno should be returned. |
| 2353 | */ |
| 2354 | typedef int mpo_proc_check_getauid_t( |
| 2355 | kauth_cred_t cred |
| 2356 | ); |
| 2357 | /** |
| 2358 | * @brief Access control check for retrieving ledger information |
| 2359 | * @param cred Subject credential |
| 2360 | * @param target Object process |
| 2361 | * @param op ledger operation |
| 2362 | * |
| 2363 | * Determine if ledger(2) system call is permitted. |
| 2364 | * |
| 2365 | * Information returned by this system call is similar to that returned via |
| 2366 | * process listings etc. |
| 2367 | * |
| 2368 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2369 | * errno should be returned. |
| 2370 | */ |
| 2371 | typedef int mpo_proc_check_ledger_t( |
| 2372 | kauth_cred_t cred, |
| 2373 | struct proc *target, |
| 2374 | int op |
| 2375 | ); |
| 2376 | /** |
| 2377 | * @brief Access control check for retrieving process information. |
| 2378 | * @param cred Subject credential |
| 2379 | * @param target Target process (may be null, may be zombie) |
| 2380 | * |
| 2381 | * Determine if a credential has permission to access process information as defined |
| 2382 | * by call number and flavor on target process |
| 2383 | * |
| 2384 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2385 | * errno should be returned. |
| 2386 | */ |
| 2387 | typedef int mpo_proc_check_proc_info_t( |
| 2388 | kauth_cred_t cred, |
| 2389 | struct proc *target, |
| 2390 | int callnum, |
| 2391 | int flavor |
| 2392 | ); |
| 2393 | /** |
| 2394 | * @brief Access control check for retrieving code signing information. |
| 2395 | * @param cred Subject credential |
| 2396 | * @param target Target process |
| 2397 | * @param op Code signing operation being performed |
| 2398 | * |
| 2399 | * Determine whether the subject identified by the credential should be |
| 2400 | * allowed to get code signing information about the target process. |
| 2401 | * |
| 2402 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2403 | * errno should be returned. |
| 2404 | */ |
| 2405 | typedef int mpo_proc_check_get_cs_info_t( |
| 2406 | kauth_cred_t cred, |
| 2407 | struct proc *target, |
| 2408 | unsigned int op |
| 2409 | ); |
| 2410 | /** |
| 2411 | * @brief Access control check for setting code signing information. |
| 2412 | * @param cred Subject credential |
| 2413 | * @param target Target process |
| 2414 | * @param op Code signing operation being performed. |
| 2415 | * |
| 2416 | * Determine whether the subject identified by the credential should be |
| 2417 | * allowed to set code signing information about the target process. |
| 2418 | * |
| 2419 | * @return Return 0 if permission is granted, otherwise an appropriate |
| 2420 | * value of errno should be returned. |
| 2421 | */ |
| 2422 | typedef int mpo_proc_check_set_cs_info_t( |
| 2423 | kauth_cred_t cred, |
| 2424 | struct proc *target, |
| 2425 | unsigned int op |
| 2426 | ); |
| 2427 | /** |
| 2428 | * @brief Access control check for mmap MAP_ANON |
| 2429 | * @param proc User process requesting the memory |
| 2430 | * @param cred Subject credential |
| 2431 | * @param u_addr Start address of the memory range |
| 2432 | * @param u_size Length address of the memory range |
| 2433 | * @param prot mmap protections; see mmap(2) |
| 2434 | * @param flags Type of mapped object; see mmap(2) |
| 2435 | * @param maxprot Maximum rights |
| 2436 | * |
| 2437 | * Determine whether the subject identified by the credential should be |
| 2438 | * allowed to obtain anonymous memory using the specified flags and |
| 2439 | * protections on the new mapping. MAP_ANON will always be present in the |
| 2440 | * flags. Certain combinations of flags with a non-NULL addr may |
| 2441 | * cause a mapping to be rejected before this hook is called. The maxprot field |
| 2442 | * holds the maximum permissions on the new mapping, a combination of |
| 2443 | * VM_PROT_READ, VM_PROT_WRITE and VM_PROT_EXECUTE. To avoid overriding prior |
| 2444 | * access control checks, a policy should only remove flags from maxprot. |
| 2445 | * |
| 2446 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2447 | * errno should be returned. Suggested failure: EPERM for lack of privilege. |
| 2448 | */ |
| 2449 | typedef int mpo_proc_check_map_anon_t( |
| 2450 | struct proc *proc, |
| 2451 | kauth_cred_t cred, |
| 2452 | user_addr_t u_addr, |
| 2453 | user_size_t u_size, |
| 2454 | int prot, |
| 2455 | int flags, |
| 2456 | int *maxprot |
| 2457 | ); |
| 2458 | /** |
| 2459 | * @brief Access control check for memorystatus_control(2) |
| 2460 | * @param cred Subject credential |
| 2461 | * @param command Memory status control command |
| 2462 | * @param pid Target process id, or 0 |
| 2463 | * |
| 2464 | * Determine whether the subject identified by the credential should |
| 2465 | * be allowed to issue the specified memorystatus control command. |
| 2466 | * |
| 2467 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2468 | * errno should be returned. |
| 2469 | */ |
| 2470 | typedef int mpo_proc_check_memorystatus_control_t( |
| 2471 | kauth_cred_t cred, |
| 2472 | int32_t command, |
| 2473 | pid_t pid |
| 2474 | ); |
| 2475 | /** |
| 2476 | * @brief Access control check for setting memory protections |
| 2477 | * @param cred Subject credential |
| 2478 | * @param proc User process requesting the change |
| 2479 | * @param addr Start address of the memory range |
| 2480 | * @param size Length address of the memory range |
| 2481 | * @param prot Memory protections, see mmap(2) |
| 2482 | * |
| 2483 | * Determine whether the subject identified by the credential should |
| 2484 | * be allowed to set the specified memory protections on memory mapped |
| 2485 | * in the process proc. |
| 2486 | * |
| 2487 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2488 | * errno should be returned. |
| 2489 | */ |
| 2490 | typedef int mpo_proc_check_mprotect_t( |
| 2491 | kauth_cred_t cred, |
| 2492 | struct proc *proc, |
| 2493 | user_addr_t addr, |
| 2494 | user_size_t size, |
| 2495 | int prot |
| 2496 | ); |
| 2497 | /** |
| 2498 | * @brief Access control check for changing scheduling parameters |
| 2499 | * @param cred Subject credential |
| 2500 | * @param proc Object process |
| 2501 | * |
| 2502 | * Determine whether the subject identified by the credential can change |
| 2503 | * the scheduling parameters of the passed process. |
| 2504 | * |
| 2505 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2506 | * errno should be returned. Suggested failure: EACCES for label mismatch, |
| 2507 | * EPERM for lack of privilege, or ESRCH to limit visibility. |
| 2508 | */ |
| 2509 | typedef int mpo_proc_check_sched_t( |
| 2510 | kauth_cred_t cred, |
| 2511 | struct proc *proc |
| 2512 | ); |
| 2513 | /** |
| 2514 | * @brief Access control check for setting audit information |
| 2515 | * @param cred Subject credential |
| 2516 | * @param ai Audit information |
| 2517 | * |
| 2518 | * Determine whether the subject identified by the credential can set |
| 2519 | * audit information such as the the preselection mask, the terminal ID |
| 2520 | * and the audit session ID, using the setaudit() system call. |
| 2521 | * |
| 2522 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2523 | * errno should be returned. |
| 2524 | */ |
| 2525 | typedef int mpo_proc_check_setaudit_t( |
| 2526 | kauth_cred_t cred, |
| 2527 | struct auditinfo_addr *ai |
| 2528 | ); |
| 2529 | /** |
| 2530 | * @brief Access control check for setting audit user ID |
| 2531 | * @param cred Subject credential |
| 2532 | * @param auid Audit user ID |
| 2533 | * |
| 2534 | * Determine whether the subject identified by the credential can set |
| 2535 | * the user identity used by the auditing system, using the setauid() |
| 2536 | * system call. |
| 2537 | * |
| 2538 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2539 | * errno should be returned. |
| 2540 | */ |
| 2541 | typedef int mpo_proc_check_setauid_t( |
| 2542 | kauth_cred_t cred, |
| 2543 | uid_t auid |
| 2544 | ); |
| 2545 | /** |
| 2546 | * @brief Access control check for delivering signal |
| 2547 | * @param cred Subject credential |
| 2548 | * @param proc Object process |
| 2549 | * @param signum Signal number; see kill(2) |
| 2550 | * |
| 2551 | * Determine whether the subject identified by the credential can deliver |
| 2552 | * the passed signal to the passed process. |
| 2553 | * |
| 2554 | * @warning Programs typically expect to be able to send and receive |
| 2555 | * signals as part or their normal process lifecycle; caution should be |
| 2556 | * exercised when implementing access controls over signal events. |
| 2557 | * |
| 2558 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2559 | * errno should be returned. Suggested failure: EACCES for label mismatch, |
| 2560 | * EPERM for lack of privilege, or ESRCH to limit visibility. |
| 2561 | */ |
| 2562 | typedef int mpo_proc_check_signal_t( |
| 2563 | kauth_cred_t cred, |
| 2564 | struct proc *proc, |
| 2565 | int signum |
| 2566 | ); |
| 2567 | /** |
| 2568 | * @brief Access control check for MAC syscalls. |
| 2569 | * @param proc Subject process |
| 2570 | * @param policy MAC policy name |
| 2571 | * @param callnum MAC policy-specific syscall number |
| 2572 | * |
| 2573 | * Determine whether the subject process can perform the passed MAC syscall. |
| 2574 | * |
| 2575 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2576 | * errno should be returned. Suggested failure: EPERM for lack of privilege. |
| 2577 | */ |
| 2578 | typedef int mpo_proc_check_syscall_mac_t( |
| 2579 | struct proc *proc, |
| 2580 | const char *policy, |
| 2581 | int callnum |
| 2582 | ); |
| 2583 | /** |
| 2584 | * @brief Access control check for Unix syscalls. |
| 2585 | * @param proc Subject process |
| 2586 | * @param scnum Syscall number; see bsd/kern/syscalls.master. |
| 2587 | * |
| 2588 | * Determine whether the subject process can perform the passed syscall (number). |
| 2589 | * |
| 2590 | * @warning Programs typically expect to be able to make syscalls as part of |
| 2591 | * their normal process lifecycle; caution should be exercised when restricting |
| 2592 | * which syscalls a process can perform. |
| 2593 | * |
| 2594 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2595 | * errno should be returned. Suggested failure: EPERM for lack of privilege. |
| 2596 | */ |
| 2597 | typedef int mpo_proc_check_syscall_unix_t( |
| 2598 | struct proc *proc, |
| 2599 | int scnum |
| 2600 | ); |
| 2601 | /** |
| 2602 | * @brief Access control check for wait |
| 2603 | * @param cred Subject credential |
| 2604 | * @param proc Object process |
| 2605 | * |
| 2606 | * Determine whether the subject identified by the credential can wait |
| 2607 | * for process termination. |
| 2608 | * |
| 2609 | * @warning Caution should be exercised when implementing access |
| 2610 | * controls for wait, since programs often wait for child processes to |
| 2611 | * exit. Failure to be notified of a child process terminating may |
| 2612 | * cause the parent process to hang, or may produce zombie processes. |
| 2613 | * |
| 2614 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2615 | * errno should be returned. |
| 2616 | */ |
| 2617 | typedef int mpo_proc_check_wait_t( |
| 2618 | kauth_cred_t cred, |
| 2619 | struct proc *proc |
| 2620 | ); |
| 2621 | /** |
| 2622 | * @brief Inform MAC policies that a process has exited. |
| 2623 | * @param proc Object process |
| 2624 | * |
| 2625 | * Called after all of the process's threads have terminated and |
| 2626 | * it has been removed from the process list. KPI that identifies |
| 2627 | * the process by pid will fail to find the process; KPI that |
| 2628 | * identifies the process by the object process pointer functions |
| 2629 | * normally. proc_exiting() returns true for the object process. |
| 2630 | */ |
| 2631 | typedef void mpo_proc_notify_exit_t( |
| 2632 | struct proc *proc |
| 2633 | ); |
| 2634 | /** |
| 2635 | * @brief Access control check for skywalk flow connect |
| 2636 | * @param cred Subject credential |
| 2637 | * @param flow Flow object |
| 2638 | * @param addr Remote address for flow to send data to |
| 2639 | * @param type Flow type (e.g. SOCK_STREAM or SOCK_DGRAM) |
| 2640 | * @param protocol Network protocol (e.g. IPPROTO_TCP) |
| 2641 | * |
| 2642 | * Determine whether the subject identified by the credential can |
| 2643 | * create a flow for sending data to the remote host specified by |
| 2644 | * addr. |
| 2645 | * |
| 2646 | * @return Return 0 if access if granted, otherwise an appropriate |
| 2647 | * value for errno should be returned. |
| 2648 | */ |
| 2649 | typedef int mpo_skywalk_flow_check_connect_t( |
| 2650 | kauth_cred_t cred, |
| 2651 | void *flow, |
| 2652 | const struct sockaddr *addr, |
| 2653 | int type, |
| 2654 | int protocol |
| 2655 | ); |
| 2656 | /** |
| 2657 | * @brief Access control check for skywalk flow listen |
| 2658 | * @param cred Subject credential |
| 2659 | * @param flow Flow object |
| 2660 | * @param addr Local address for flow to listen on |
| 2661 | * @param type Flow type (e.g. SOCK_STREAM or SOCK_DGRAM) |
| 2662 | * @param protocol Network protocol (e.g. IPPROTO_TCP) |
| 2663 | * |
| 2664 | * Determine whether the subject identified by the credential can |
| 2665 | * create a flow for receiving data on the local address specified |
| 2666 | * by addr. |
| 2667 | * |
| 2668 | * @return Return 0 if access if granted, otherwise an appropriate |
| 2669 | * value for errno should be returned. |
| 2670 | */ |
| 2671 | typedef int mpo_skywalk_flow_check_listen_t( |
| 2672 | kauth_cred_t cred, |
| 2673 | void *flow, |
| 2674 | const struct sockaddr *addr, |
| 2675 | int type, |
| 2676 | int protocol |
| 2677 | ); |
| 2678 | /** |
| 2679 | * @brief Access control check for socket accept |
| 2680 | * @param cred Subject credential |
| 2681 | * @param so Object socket |
| 2682 | * @param socklabel Policy label for socket |
| 2683 | * |
| 2684 | * Determine whether the subject identified by the credential can accept() |
| 2685 | * a new connection on the socket from the host specified by addr. |
| 2686 | * |
| 2687 | * @return Return 0 if access if granted, otherwise an appropriate |
| 2688 | * value for errno should be returned. |
| 2689 | */ |
| 2690 | typedef int mpo_socket_check_accept_t( |
| 2691 | kauth_cred_t cred, |
| 2692 | socket_t so, |
| 2693 | struct label *socklabel |
| 2694 | ); |
| 2695 | /** |
| 2696 | * @brief Access control check for a pending socket accept |
| 2697 | * @param cred Subject credential |
| 2698 | * @param so Object socket |
| 2699 | * @param socklabel Policy label for socket |
| 2700 | * @param addr Address of the listening socket (coming soon) |
| 2701 | * |
| 2702 | * Determine whether the subject identified by the credential can accept() |
| 2703 | * a pending connection on the socket from the host specified by addr. |
| 2704 | * |
| 2705 | * @return Return 0 if access if granted, otherwise an appropriate |
| 2706 | * value for errno should be returned. |
| 2707 | */ |
| 2708 | typedef int mpo_socket_check_accepted_t( |
| 2709 | kauth_cred_t cred, |
| 2710 | socket_t so, |
| 2711 | struct label *socklabel, |
| 2712 | struct sockaddr *addr |
| 2713 | ); |
| 2714 | /** |
| 2715 | * @brief Access control check for socket bind |
| 2716 | * @param cred Subject credential |
| 2717 | * @param so Object socket |
| 2718 | * @param socklabel Policy label for socket |
| 2719 | * @param addr Name to assign to the socket |
| 2720 | * |
| 2721 | * Determine whether the subject identified by the credential can bind() |
| 2722 | * the name (addr) to the socket. |
| 2723 | * |
| 2724 | * @return Return 0 if access if granted, otherwise an appropriate |
| 2725 | * value for errno should be returned. |
| 2726 | */ |
| 2727 | typedef int mpo_socket_check_bind_t( |
| 2728 | kauth_cred_t cred, |
| 2729 | socket_t so, |
| 2730 | struct label *socklabel, |
| 2731 | struct sockaddr *addr |
| 2732 | ); |
| 2733 | /** |
| 2734 | * @brief Access control check for socket connect |
| 2735 | * @param cred Subject credential |
| 2736 | * @param so Object socket |
| 2737 | * @param socklabel Policy label for socket |
| 2738 | * @param addr Name to assign to the socket |
| 2739 | * |
| 2740 | * Determine whether the subject identified by the credential can |
| 2741 | * connect() the passed socket to the remote host specified by addr. |
| 2742 | * |
| 2743 | * @return Return 0 if access if granted, otherwise an appropriate |
| 2744 | * value for errno should be returned. |
| 2745 | */ |
| 2746 | typedef int mpo_socket_check_connect_t( |
| 2747 | kauth_cred_t cred, |
| 2748 | socket_t so, |
| 2749 | struct label *socklabel, |
| 2750 | struct sockaddr *addr |
| 2751 | ); |
| 2752 | /** |
| 2753 | * @brief Access control check for socket() system call. |
| 2754 | * @param cred Subject credential |
| 2755 | * @param domain communication domain |
| 2756 | * @param type socket type |
| 2757 | * @param protocol socket protocol |
| 2758 | * |
| 2759 | * Determine whether the subject identified by the credential can |
| 2760 | * make the socket() call. |
| 2761 | * |
| 2762 | * @return Return 0 if access if granted, otherwise an appropriate |
| 2763 | * value for errno should be returned. |
| 2764 | */ |
| 2765 | typedef int mpo_socket_check_create_t( |
| 2766 | kauth_cred_t cred, |
| 2767 | int domain, |
| 2768 | int type, |
| 2769 | int protocol |
| 2770 | ); |
| 2771 | /** |
| 2772 | * @brief Access control check for socket ioctl. |
| 2773 | * @param cred Subject credential |
| 2774 | * @param so Object socket |
| 2775 | * @param cmd The ioctl command; see ioctl(2) |
| 2776 | * @param socklabel Policy label for socket |
| 2777 | * |
| 2778 | * Determine whether the subject identified by the credential can perform |
| 2779 | * the ioctl operation indicated by cmd on the given socket. |
| 2780 | * |
| 2781 | * @warning Since ioctl data is opaque from the standpoint of the MAC |
| 2782 | * framework, and since ioctls can affect many aspects of system |
| 2783 | * operation, policies must exercise extreme care when implementing |
| 2784 | * access control checks. |
| 2785 | * |
| 2786 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2787 | * errno should be returned. |
| 2788 | */ |
| 2789 | typedef int mpo_socket_check_ioctl_t( |
| 2790 | kauth_cred_t cred, |
| 2791 | socket_t so, |
| 2792 | unsigned long cmd, |
| 2793 | struct label *socklabel |
| 2794 | ); |
| 2795 | /** |
| 2796 | * @brief Access control check for socket listen |
| 2797 | * @param cred Subject credential |
| 2798 | * @param so Object socket |
| 2799 | * @param socklabel Policy label for socket |
| 2800 | * |
| 2801 | * Determine whether the subject identified by the credential can |
| 2802 | * listen() on the passed socket. |
| 2803 | * |
| 2804 | * @return Return 0 if access if granted, otherwise an appropriate |
| 2805 | * value for errno should be returned. |
| 2806 | */ |
| 2807 | typedef int mpo_socket_check_listen_t( |
| 2808 | kauth_cred_t cred, |
| 2809 | socket_t so, |
| 2810 | struct label *socklabel |
| 2811 | ); |
| 2812 | /** |
| 2813 | * @brief Access control check for socket receive |
| 2814 | * @param cred Subject credential |
| 2815 | * @param so Object socket |
| 2816 | * @param socklabel Policy label for socket |
| 2817 | * |
| 2818 | * Determine whether the subject identified by the credential can |
| 2819 | * receive data from the socket. |
| 2820 | * |
| 2821 | * @return Return 0 if access if granted, otherwise an appropriate |
| 2822 | * value for errno should be returned. |
| 2823 | */ |
| 2824 | typedef int mpo_socket_check_receive_t( |
| 2825 | kauth_cred_t cred, |
| 2826 | socket_t so, |
| 2827 | struct label *socklabel |
| 2828 | ); |
| 2829 | |
| 2830 | /** |
| 2831 | * @brief Access control check for socket receive |
| 2832 | * @param cred Subject credential |
| 2833 | * @param sock Object socket |
| 2834 | * @param socklabel Policy label for socket |
| 2835 | * @param saddr Name of the remote socket |
| 2836 | * |
| 2837 | * Determine whether the subject identified by the credential can |
| 2838 | * receive data from the remote host specified by addr. |
| 2839 | * |
| 2840 | * @return Return 0 if access if granted, otherwise an appropriate |
| 2841 | * value for errno should be returned. |
| 2842 | */ |
| 2843 | typedef int mpo_socket_check_received_t( |
| 2844 | kauth_cred_t cred, |
| 2845 | struct socket *sock, |
| 2846 | struct label *socklabel, |
| 2847 | struct sockaddr *saddr |
| 2848 | ); |
| 2849 | |
| 2850 | /** |
| 2851 | * @brief Access control check for socket send |
| 2852 | * @param cred Subject credential |
| 2853 | * @param so Object socket |
| 2854 | * @param socklabel Policy label for socket |
| 2855 | * @param addr Address being sent to |
| 2856 | * |
| 2857 | * Determine whether the subject identified by the credential can send |
| 2858 | * data to the socket. |
| 2859 | * |
| 2860 | * @return Return 0 if access if granted, otherwise an appropriate |
| 2861 | * value for errno should be returned. |
| 2862 | */ |
| 2863 | typedef int mpo_socket_check_send_t( |
| 2864 | kauth_cred_t cred, |
| 2865 | socket_t so, |
| 2866 | struct label *socklabel, |
| 2867 | struct sockaddr *addr |
| 2868 | ); |
| 2869 | /** |
| 2870 | * @brief Access control check for retrieving socket status |
| 2871 | * @param cred Subject credential |
| 2872 | * @param so Object socket |
| 2873 | * @param socklabel Policy label for so |
| 2874 | * |
| 2875 | * Determine whether the subject identified by the credential can |
| 2876 | * execute the stat() system call on the given socket. |
| 2877 | * |
| 2878 | * @return Return 0 if access if granted, otherwise an appropriate |
| 2879 | * value for errno should be returned. |
| 2880 | */ |
| 2881 | typedef int mpo_socket_check_stat_t( |
| 2882 | kauth_cred_t cred, |
| 2883 | socket_t so, |
| 2884 | struct label *socklabel |
| 2885 | ); |
| 2886 | /** |
| 2887 | * @brief Access control check for setting socket options |
| 2888 | * @param cred Subject credential |
| 2889 | * @param so Object socket |
| 2890 | * @param socklabel Policy label for so |
| 2891 | * @param sopt The options being set |
| 2892 | * |
| 2893 | * Determine whether the subject identified by the credential can |
| 2894 | * execute the setsockopt system call on the given socket. |
| 2895 | * |
| 2896 | * @return Return 0 if access if granted, otherwise an appropriate |
| 2897 | * value for errno should be returned. |
| 2898 | */ |
| 2899 | typedef int mpo_socket_check_setsockopt_t( |
| 2900 | kauth_cred_t cred, |
| 2901 | socket_t so, |
| 2902 | struct label *socklabel, |
| 2903 | struct sockopt *sopt |
| 2904 | ); |
| 2905 | /** |
| 2906 | * @brief Access control check for getting socket options |
| 2907 | * @param cred Subject credential |
| 2908 | * @param so Object socket |
| 2909 | * @param socklabel Policy label for so |
| 2910 | * @param sopt The options to get |
| 2911 | * |
| 2912 | * Determine whether the subject identified by the credential can |
| 2913 | * execute the getsockopt system call on the given socket. |
| 2914 | * |
| 2915 | * @return Return 0 if access if granted, otherwise an appropriate |
| 2916 | * value for errno should be returned. |
| 2917 | */ |
| 2918 | typedef int mpo_socket_check_getsockopt_t( |
| 2919 | kauth_cred_t cred, |
| 2920 | socket_t so, |
| 2921 | struct label *socklabel, |
| 2922 | struct sockopt *sopt |
| 2923 | ); |
| 2924 | /** |
| 2925 | * @brief Access control check for enabling accounting |
| 2926 | * @param cred Subject credential |
| 2927 | * @param vp Accounting file |
| 2928 | * @param vlabel Label associated with vp |
| 2929 | * |
| 2930 | * Determine whether the subject should be allowed to enable accounting, |
| 2931 | * based on its label and the label of the accounting log file. See |
| 2932 | * acct(5) for more information. |
| 2933 | * |
| 2934 | * As accounting is disabled by passing NULL to the acct(2) system call, |
| 2935 | * the policy should be prepared for both 'vp' and 'vlabel' to be NULL. |
| 2936 | * |
| 2937 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2938 | * errno should be returned. |
| 2939 | */ |
| 2940 | typedef int mpo_system_check_acct_t( |
| 2941 | kauth_cred_t cred, |
| 2942 | struct vnode *vp, |
| 2943 | struct label *vlabel |
| 2944 | ); |
| 2945 | /** |
| 2946 | * @brief Access control check for audit |
| 2947 | * @param cred Subject credential |
| 2948 | * @param record Audit record |
| 2949 | * @param length Audit record length |
| 2950 | * |
| 2951 | * Determine whether the subject identified by the credential can submit |
| 2952 | * an audit record for inclusion in the audit log via the audit() system call. |
| 2953 | * |
| 2954 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2955 | * errno should be returned. |
| 2956 | */ |
| 2957 | typedef int mpo_system_check_audit_t( |
| 2958 | kauth_cred_t cred, |
| 2959 | void *record, |
| 2960 | int length |
| 2961 | ); |
| 2962 | /** |
| 2963 | * @brief Access control check for controlling audit |
| 2964 | * @param cred Subject credential |
| 2965 | * @param vp Audit file |
| 2966 | * @param vl Label associated with vp |
| 2967 | * |
| 2968 | * Determine whether the subject should be allowed to enable auditing using |
| 2969 | * the auditctl() system call, based on its label and the label of the proposed |
| 2970 | * audit file. |
| 2971 | * |
| 2972 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2973 | * errno should be returned. |
| 2974 | */ |
| 2975 | typedef int mpo_system_check_auditctl_t( |
| 2976 | kauth_cred_t cred, |
| 2977 | struct vnode *vp, |
| 2978 | struct label *vl |
| 2979 | ); |
| 2980 | /** |
| 2981 | * @brief Access control check for manipulating auditing |
| 2982 | * @param cred Subject credential |
| 2983 | * @param cmd Audit control command |
| 2984 | * |
| 2985 | * Determine whether the subject identified by the credential can perform |
| 2986 | * the audit subsystem control operation cmd via the auditon() system call. |
| 2987 | * |
| 2988 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 2989 | * errno should be returned. |
| 2990 | */ |
| 2991 | typedef int mpo_system_check_auditon_t( |
| 2992 | kauth_cred_t cred, |
| 2993 | int cmd |
| 2994 | ); |
| 2995 | /** |
| 2996 | * @brief Access control check for obtaining the host control port |
| 2997 | * @param cred Subject credential |
| 2998 | * |
| 2999 | * Determine whether the subject identified by the credential can |
| 3000 | * obtain the host control port. |
| 3001 | * |
| 3002 | * @return Return 0 if access is granted, or non-zero otherwise. |
| 3003 | */ |
| 3004 | typedef int mpo_system_check_host_priv_t( |
| 3005 | kauth_cred_t cred |
| 3006 | ); |
| 3007 | /** |
| 3008 | * @brief Access control check for obtaining system information |
| 3009 | * @param cred Subject credential |
| 3010 | * @param info_type A description of the information requested |
| 3011 | * |
| 3012 | * Determine whether the subject identified by the credential should be |
| 3013 | * allowed to obtain information about the system. |
| 3014 | * |
| 3015 | * This is a generic hook that can be used in a variety of situations where |
| 3016 | * information is being returned that might be considered sensitive. |
| 3017 | * Rather than adding a new MAC hook for every such interface, this hook can |
| 3018 | * be called with a string identifying the type of information requested. |
| 3019 | * |
| 3020 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3021 | * errno should be returned. |
| 3022 | */ |
| 3023 | typedef int mpo_system_check_info_t( |
| 3024 | kauth_cred_t cred, |
| 3025 | const char *info_type |
| 3026 | ); |
| 3027 | /** |
| 3028 | * @brief Access control check for calling NFS services |
| 3029 | * @param cred Subject credential |
| 3030 | * |
| 3031 | * Determine whether the subject identified by the credential should be |
| 3032 | * allowed to call nfssrv(2). |
| 3033 | * |
| 3034 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3035 | * errno should be returned. |
| 3036 | */ |
| 3037 | typedef int mpo_system_check_nfsd_t( |
| 3038 | kauth_cred_t cred |
| 3039 | ); |
| 3040 | /** |
| 3041 | * @brief Access control check for reboot |
| 3042 | * @param cred Subject credential |
| 3043 | * @param howto howto parameter from reboot(2) |
| 3044 | * |
| 3045 | * Determine whether the subject identified by the credential should be |
| 3046 | * allowed to reboot the system in the specified manner. |
| 3047 | * |
| 3048 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3049 | * errno should be returned. |
| 3050 | */ |
| 3051 | typedef int mpo_system_check_reboot_t( |
| 3052 | kauth_cred_t cred, |
| 3053 | int howto |
| 3054 | ); |
| 3055 | /** |
| 3056 | * @brief Access control check for setting system clock |
| 3057 | * @param cred Subject credential |
| 3058 | * |
| 3059 | * Determine whether the subject identified by the credential should be |
| 3060 | * allowed to set the system clock. |
| 3061 | * |
| 3062 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3063 | * errno should be returned. |
| 3064 | */ |
| 3065 | typedef int mpo_system_check_settime_t( |
| 3066 | kauth_cred_t cred |
| 3067 | ); |
| 3068 | /** |
| 3069 | * @brief Access control check for removing swap devices |
| 3070 | * @param cred Subject credential |
| 3071 | * @param vp Swap device |
| 3072 | * @param label Label associated with vp |
| 3073 | * |
| 3074 | * Determine whether the subject identified by the credential should be |
| 3075 | * allowed to remove vp as a swap device. |
| 3076 | * |
| 3077 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3078 | * errno should be returned. |
| 3079 | */ |
| 3080 | typedef int mpo_system_check_swapoff_t( |
| 3081 | kauth_cred_t cred, |
| 3082 | struct vnode *vp, |
| 3083 | struct label *label |
| 3084 | ); |
| 3085 | /** |
| 3086 | * @brief Access control check for adding swap devices |
| 3087 | * @param cred Subject credential |
| 3088 | * @param vp Swap device |
| 3089 | * @param label Label associated with vp |
| 3090 | * |
| 3091 | * Determine whether the subject identified by the credential should be |
| 3092 | * allowed to add vp as a swap device. |
| 3093 | * |
| 3094 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3095 | * errno should be returned. |
| 3096 | */ |
| 3097 | typedef int mpo_system_check_swapon_t( |
| 3098 | kauth_cred_t cred, |
| 3099 | struct vnode *vp, |
| 3100 | struct label *label |
| 3101 | ); |
| 3102 | /** |
| 3103 | * @brief Access control check for sysctl |
| 3104 | * @param cred Subject credential |
| 3105 | * @param namestring String representation of sysctl name. |
| 3106 | * @param name Integer name; see sysctl(3) |
| 3107 | * @param namelen Length of name array of integers; see sysctl(3) |
| 3108 | * @param old 0 or address where to store old value; see sysctl(3) |
| 3109 | * @param oldlen Length of old buffer; see sysctl(3) |
| 3110 | * @param newvalue 0 or address of new value; see sysctl(3) |
| 3111 | * @param newlen Length of new buffer; see sysctl(3) |
| 3112 | * |
| 3113 | * Determine whether the subject identified by the credential should be |
| 3114 | * allowed to make the specified sysctl(3) transaction. |
| 3115 | * |
| 3116 | * The sysctl(3) call specifies that if the old value is not desired, |
| 3117 | * oldp and oldlenp should be set to NULL. Likewise, if a new value is |
| 3118 | * not to be set, newp should be set to NULL and newlen set to 0. |
| 3119 | * |
| 3120 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3121 | * errno should be returned. |
| 3122 | */ |
| 3123 | typedef int mpo_system_check_sysctlbyname_t( |
| 3124 | kauth_cred_t cred, |
| 3125 | const char *namestring, |
| 3126 | int *name, |
| 3127 | size_t namelen, |
| 3128 | user_addr_t old, /* NULLOK */ |
| 3129 | size_t oldlen, |
| 3130 | user_addr_t newvalue, /* NULLOK */ |
| 3131 | size_t newlen |
| 3132 | ); |
| 3133 | /** |
| 3134 | * @brief Access control check for kas_info |
| 3135 | * @param cred Subject credential |
| 3136 | * @param selector Category of information to return. See kas_info.h |
| 3137 | * |
| 3138 | * Determine whether the subject identified by the credential can perform |
| 3139 | * introspection of the kernel address space layout for |
| 3140 | * debugging/performance analysis. |
| 3141 | * |
| 3142 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3143 | * errno should be returned. |
| 3144 | */ |
| 3145 | typedef int mpo_system_check_kas_info_t( |
| 3146 | kauth_cred_t cred, |
| 3147 | int selector |
| 3148 | ); |
| 3149 | /** |
| 3150 | * @brief Create a System V message label |
| 3151 | * @param cred Subject credential |
| 3152 | * @param msqptr The message queue the message will be placed in |
| 3153 | * @param msqlabel The label of the message queue |
| 3154 | * @param msgptr The message |
| 3155 | * @param msglabel The label of the message |
| 3156 | * |
| 3157 | * Label the message as its placed in the message queue. |
| 3158 | */ |
| 3159 | typedef void mpo_sysvmsg_label_associate_t( |
| 3160 | kauth_cred_t cred, |
| 3161 | struct msqid_kernel *msqptr, |
| 3162 | struct label *msqlabel, |
| 3163 | struct msg *msgptr, |
| 3164 | struct label *msglabel |
| 3165 | ); |
| 3166 | /** |
| 3167 | * @brief Destroy System V message label |
| 3168 | * @param label The label to be destroyed |
| 3169 | * |
| 3170 | * Destroy a System V message label. Since the object is |
| 3171 | * going out of scope, policy modules should free any internal storage |
| 3172 | * associated with the label so that it may be destroyed. |
| 3173 | */ |
| 3174 | typedef void mpo_sysvmsg_label_destroy_t( |
| 3175 | struct label *label |
| 3176 | ); |
| 3177 | /** |
| 3178 | * @brief Initialize System V message label |
| 3179 | * @param label New label to initialize |
| 3180 | * |
| 3181 | * Initialize the label for a newly instantiated System V message. |
| 3182 | */ |
| 3183 | typedef void mpo_sysvmsg_label_init_t( |
| 3184 | struct label *label |
| 3185 | ); |
| 3186 | /** |
| 3187 | * @brief Clean up a System V message label |
| 3188 | * @param label The label to be destroyed |
| 3189 | * |
| 3190 | * Clean up a System V message label. Darwin pre-allocates |
| 3191 | * messages at system boot time and re-uses them rather than |
| 3192 | * allocating new ones. Before messages are returned to the "free |
| 3193 | * pool", policies can cleanup or overwrite any information present in |
| 3194 | * the label. |
| 3195 | */ |
| 3196 | typedef void mpo_sysvmsg_label_recycle_t( |
| 3197 | struct label *label |
| 3198 | ); |
| 3199 | /** |
| 3200 | * @brief Access control check for System V message enqueuing |
| 3201 | * @param cred Subject credential |
| 3202 | * @param msgptr The message |
| 3203 | * @param msglabel The message's label |
| 3204 | * @param msqptr The message queue |
| 3205 | * @param msqlabel The message queue's label |
| 3206 | * |
| 3207 | * Determine whether the subject identified by the credential can add the |
| 3208 | * given message to the given message queue. |
| 3209 | * |
| 3210 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3211 | * errno should be returned. |
| 3212 | */ |
| 3213 | typedef int mpo_sysvmsq_check_enqueue_t( |
| 3214 | kauth_cred_t cred, |
| 3215 | struct msg *msgptr, |
| 3216 | struct label *msglabel, |
| 3217 | struct msqid_kernel *msqptr, |
| 3218 | struct label *msqlabel |
| 3219 | ); |
| 3220 | /** |
| 3221 | * @brief Access control check for System V message reception |
| 3222 | * @param cred The credential of the intended recipient |
| 3223 | * @param msgptr The message |
| 3224 | * @param msglabel The message's label |
| 3225 | * |
| 3226 | * Determine whether the subject identified by the credential can receive |
| 3227 | * the given message. |
| 3228 | * |
| 3229 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3230 | * errno should be returned. |
| 3231 | */ |
| 3232 | typedef int mpo_sysvmsq_check_msgrcv_t( |
| 3233 | kauth_cred_t cred, |
| 3234 | struct msg *msgptr, |
| 3235 | struct label *msglabel |
| 3236 | ); |
| 3237 | /** |
| 3238 | * @brief Access control check for System V message queue removal |
| 3239 | * @param cred The credential of the caller |
| 3240 | * @param msgptr The message |
| 3241 | * @param msglabel The message's label |
| 3242 | * |
| 3243 | * System V message queues are removed using the msgctl() system call. |
| 3244 | * The system will iterate over each message in the queue, calling this |
| 3245 | * function for each, to determine whether the caller has the appropriate |
| 3246 | * credentials. |
| 3247 | * |
| 3248 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3249 | * errno should be returned. |
| 3250 | */ |
| 3251 | typedef int mpo_sysvmsq_check_msgrmid_t( |
| 3252 | kauth_cred_t cred, |
| 3253 | struct msg *msgptr, |
| 3254 | struct label *msglabel |
| 3255 | ); |
| 3256 | /** |
| 3257 | * @brief Access control check for msgctl() |
| 3258 | * @param cred The credential of the caller |
| 3259 | * @param msqptr The message queue |
| 3260 | * @param msqlabel The message queue's label |
| 3261 | * |
| 3262 | * This access check is performed to validate calls to msgctl(). |
| 3263 | * |
| 3264 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3265 | * errno should be returned. |
| 3266 | */ |
| 3267 | typedef int mpo_sysvmsq_check_msqctl_t( |
| 3268 | kauth_cred_t cred, |
| 3269 | struct msqid_kernel *msqptr, |
| 3270 | struct label *msqlabel, |
| 3271 | int cmd |
| 3272 | ); |
| 3273 | /** |
| 3274 | * @brief Access control check to get a System V message queue |
| 3275 | * @param cred The credential of the caller |
| 3276 | * @param msqptr The message queue requested |
| 3277 | * @param msqlabel The message queue's label |
| 3278 | * |
| 3279 | * On a call to msgget(), if the queue requested already exists, |
| 3280 | * and it is a public queue, this check will be performed before the |
| 3281 | * queue's ID is returned to the user. |
| 3282 | * |
| 3283 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3284 | * errno should be returned. |
| 3285 | */ |
| 3286 | typedef int mpo_sysvmsq_check_msqget_t( |
| 3287 | kauth_cred_t cred, |
| 3288 | struct msqid_kernel *msqptr, |
| 3289 | struct label *msqlabel |
| 3290 | ); |
| 3291 | /** |
| 3292 | * @brief Access control check to receive a System V message from the given queue |
| 3293 | * @param cred The credential of the caller |
| 3294 | * @param msqptr The message queue to receive from |
| 3295 | * @param msqlabel The message queue's label |
| 3296 | * |
| 3297 | * On a call to msgrcv(), this check is performed to determine whether the |
| 3298 | * caller has receive rights on the given queue. |
| 3299 | * |
| 3300 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3301 | * errno should be returned. |
| 3302 | */ |
| 3303 | typedef int mpo_sysvmsq_check_msqrcv_t( |
| 3304 | kauth_cred_t cred, |
| 3305 | struct msqid_kernel *msqptr, |
| 3306 | struct label *msqlabel |
| 3307 | ); |
| 3308 | /** |
| 3309 | * @brief Access control check to send a System V message to the given queue |
| 3310 | * @param cred The credential of the caller |
| 3311 | * @param msqptr The message queue to send to |
| 3312 | * @param msqlabel The message queue's label |
| 3313 | * |
| 3314 | * On a call to msgsnd(), this check is performed to determine whether the |
| 3315 | * caller has send rights on the given queue. |
| 3316 | * |
| 3317 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3318 | * errno should be returned. |
| 3319 | */ |
| 3320 | typedef int mpo_sysvmsq_check_msqsnd_t( |
| 3321 | kauth_cred_t cred, |
| 3322 | struct msqid_kernel *msqptr, |
| 3323 | struct label *msqlabel |
| 3324 | ); |
| 3325 | /** |
| 3326 | * @brief Create a System V message queue label |
| 3327 | * @param cred Subject credential |
| 3328 | * @param msqptr The message queue |
| 3329 | * @param msqlabel The label of the message queue |
| 3330 | * |
| 3331 | */ |
| 3332 | typedef void mpo_sysvmsq_label_associate_t( |
| 3333 | kauth_cred_t cred, |
| 3334 | struct msqid_kernel *msqptr, |
| 3335 | struct label *msqlabel |
| 3336 | ); |
| 3337 | /** |
| 3338 | * @brief Destroy System V message queue label |
| 3339 | * @param label The label to be destroyed |
| 3340 | * |
| 3341 | * Destroy a System V message queue label. Since the object is |
| 3342 | * going out of scope, policy modules should free any internal storage |
| 3343 | * associated with the label so that it may be destroyed. |
| 3344 | */ |
| 3345 | typedef void mpo_sysvmsq_label_destroy_t( |
| 3346 | struct label *label |
| 3347 | ); |
| 3348 | /** |
| 3349 | * @brief Initialize System V message queue label |
| 3350 | * @param label New label to initialize |
| 3351 | * |
| 3352 | * Initialize the label for a newly instantiated System V message queue. |
| 3353 | */ |
| 3354 | typedef void mpo_sysvmsq_label_init_t( |
| 3355 | struct label *label |
| 3356 | ); |
| 3357 | /** |
| 3358 | * @brief Clean up a System V message queue label |
| 3359 | * @param label The label to be destroyed |
| 3360 | * |
| 3361 | * Clean up a System V message queue label. Darwin pre-allocates |
| 3362 | * message queues at system boot time and re-uses them rather than |
| 3363 | * allocating new ones. Before message queues are returned to the "free |
| 3364 | * pool", policies can cleanup or overwrite any information present in |
| 3365 | * the label. |
| 3366 | */ |
| 3367 | typedef void mpo_sysvmsq_label_recycle_t( |
| 3368 | struct label *label |
| 3369 | ); |
| 3370 | /** |
| 3371 | * @brief Access control check for System V semaphore control operation |
| 3372 | * @param cred Subject credential |
| 3373 | * @param semakptr Pointer to semaphore identifier |
| 3374 | * @param semaklabel Label associated with semaphore |
| 3375 | * @param cmd Control operation to be performed; see semctl(2) |
| 3376 | * |
| 3377 | * Determine whether the subject identified by the credential can perform |
| 3378 | * the operation indicated by cmd on the System V semaphore semakptr. |
| 3379 | * |
| 3380 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3381 | * errno should be returned. |
| 3382 | */ |
| 3383 | typedef int mpo_sysvsem_check_semctl_t( |
| 3384 | kauth_cred_t cred, |
| 3385 | struct semid_kernel *semakptr, |
| 3386 | struct label *semaklabel, |
| 3387 | int cmd |
| 3388 | ); |
| 3389 | /** |
| 3390 | * @brief Access control check for obtaining a System V semaphore |
| 3391 | * @param cred Subject credential |
| 3392 | * @param semakptr Pointer to semaphore identifier |
| 3393 | * @param semaklabel Label to associate with the semaphore |
| 3394 | * |
| 3395 | * Determine whether the subject identified by the credential can |
| 3396 | * obtain a System V semaphore. |
| 3397 | * |
| 3398 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3399 | * errno should be returned. |
| 3400 | */ |
| 3401 | typedef int mpo_sysvsem_check_semget_t( |
| 3402 | kauth_cred_t cred, |
| 3403 | struct semid_kernel *semakptr, |
| 3404 | struct label *semaklabel |
| 3405 | ); |
| 3406 | /** |
| 3407 | * @brief Access control check for System V semaphore operations |
| 3408 | * @param cred Subject credential |
| 3409 | * @param semakptr Pointer to semaphore identifier |
| 3410 | * @param semaklabel Label associated with the semaphore |
| 3411 | * @param accesstype Flags to indicate access (read and/or write) |
| 3412 | * |
| 3413 | * Determine whether the subject identified by the credential can |
| 3414 | * perform the operations on the System V semaphore indicated by |
| 3415 | * semakptr. The accesstype flags hold the maximum set of permissions |
| 3416 | * from the sem_op array passed to the semop system call. It may |
| 3417 | * contain SEM_R for read-only operations or SEM_A for read/write |
| 3418 | * operations. |
| 3419 | * |
| 3420 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3421 | * errno should be returned. |
| 3422 | */ |
| 3423 | typedef int mpo_sysvsem_check_semop_t( |
| 3424 | kauth_cred_t cred, |
| 3425 | struct semid_kernel *semakptr, |
| 3426 | struct label *semaklabel, |
| 3427 | size_t accesstype |
| 3428 | ); |
| 3429 | /** |
| 3430 | * @brief Create a System V semaphore label |
| 3431 | * @param cred Subject credential |
| 3432 | * @param semakptr The semaphore being created |
| 3433 | * @param semalabel Label to associate with the new semaphore |
| 3434 | * |
| 3435 | * Label a new System V semaphore. The label was previously |
| 3436 | * initialized and associated with the semaphore. At this time, an |
| 3437 | * appropriate initial label value should be assigned to the object and |
| 3438 | * stored in semalabel. |
| 3439 | */ |
| 3440 | typedef void mpo_sysvsem_label_associate_t( |
| 3441 | kauth_cred_t cred, |
| 3442 | struct semid_kernel *semakptr, |
| 3443 | struct label *semalabel |
| 3444 | ); |
| 3445 | /** |
| 3446 | * @brief Destroy System V semaphore label |
| 3447 | * @param label The label to be destroyed |
| 3448 | * |
| 3449 | * Destroy a System V semaphore label. Since the object is |
| 3450 | * going out of scope, policy modules should free any internal storage |
| 3451 | * associated with the label so that it may be destroyed. |
| 3452 | */ |
| 3453 | typedef void mpo_sysvsem_label_destroy_t( |
| 3454 | struct label *label |
| 3455 | ); |
| 3456 | /** |
| 3457 | * @brief Initialize System V semaphore label |
| 3458 | * @param label New label to initialize |
| 3459 | * |
| 3460 | * Initialize the label for a newly instantiated System V semaphore. Sleeping |
| 3461 | * is permitted. |
| 3462 | */ |
| 3463 | typedef void mpo_sysvsem_label_init_t( |
| 3464 | struct label *label |
| 3465 | ); |
| 3466 | /** |
| 3467 | * @brief Clean up a System V semaphore label |
| 3468 | * @param label The label to be cleaned |
| 3469 | * |
| 3470 | * Clean up a System V semaphore label. Darwin pre-allocates |
| 3471 | * semaphores at system boot time and re-uses them rather than |
| 3472 | * allocating new ones. Before semaphores are returned to the "free |
| 3473 | * pool", policies can cleanup or overwrite any information present in |
| 3474 | * the label. |
| 3475 | */ |
| 3476 | typedef void mpo_sysvsem_label_recycle_t( |
| 3477 | struct label *label |
| 3478 | ); |
| 3479 | /** |
| 3480 | * @brief Access control check for mapping System V shared memory |
| 3481 | * @param cred Subject credential |
| 3482 | * @param shmsegptr Pointer to shared memory segment identifier |
| 3483 | * @param shmseglabel Label associated with the shared memory segment |
| 3484 | * @param shmflg shmat flags; see shmat(2) |
| 3485 | * |
| 3486 | * Determine whether the subject identified by the credential can map |
| 3487 | * the System V shared memory segment associated with shmsegptr. |
| 3488 | * |
| 3489 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3490 | * errno should be returned. |
| 3491 | */ |
| 3492 | typedef int mpo_sysvshm_check_shmat_t( |
| 3493 | kauth_cred_t cred, |
| 3494 | struct shmid_kernel *shmsegptr, |
| 3495 | struct label *shmseglabel, |
| 3496 | int shmflg |
| 3497 | ); |
| 3498 | /** |
| 3499 | * @brief Access control check for System V shared memory control operation |
| 3500 | * @param cred Subject credential |
| 3501 | * @param shmsegptr Pointer to shared memory segment identifier |
| 3502 | * @param shmseglabel Label associated with the shared memory segment |
| 3503 | * @param cmd Control operation to be performed; see shmctl(2) |
| 3504 | * |
| 3505 | * Determine whether the subject identified by the credential can perform |
| 3506 | * the operation indicated by cmd on the System V shared memory segment |
| 3507 | * shmsegptr. |
| 3508 | * |
| 3509 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3510 | * errno should be returned. |
| 3511 | */ |
| 3512 | typedef int mpo_sysvshm_check_shmctl_t( |
| 3513 | kauth_cred_t cred, |
| 3514 | struct shmid_kernel *shmsegptr, |
| 3515 | struct label *shmseglabel, |
| 3516 | int cmd |
| 3517 | ); |
| 3518 | /** |
| 3519 | * @brief Access control check for unmapping System V shared memory |
| 3520 | * @param cred Subject credential |
| 3521 | * @param shmsegptr Pointer to shared memory segment identifier |
| 3522 | * @param shmseglabel Label associated with the shared memory segment |
| 3523 | * |
| 3524 | * Determine whether the subject identified by the credential can unmap |
| 3525 | * the System V shared memory segment associated with shmsegptr. |
| 3526 | * |
| 3527 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3528 | * errno should be returned. |
| 3529 | */ |
| 3530 | typedef int mpo_sysvshm_check_shmdt_t( |
| 3531 | kauth_cred_t cred, |
| 3532 | struct shmid_kernel *shmsegptr, |
| 3533 | struct label *shmseglabel |
| 3534 | ); |
| 3535 | /** |
| 3536 | * @brief Access control check obtaining System V shared memory identifier |
| 3537 | * @param cred Subject credential |
| 3538 | * @param shmsegptr Pointer to shared memory segment identifier |
| 3539 | * @param shmseglabel Label associated with the shared memory segment |
| 3540 | * @param shmflg shmget flags; see shmget(2) |
| 3541 | * |
| 3542 | * Determine whether the subject identified by the credential can get |
| 3543 | * the System V shared memory segment address. |
| 3544 | * |
| 3545 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3546 | * errno should be returned. |
| 3547 | */ |
| 3548 | typedef int mpo_sysvshm_check_shmget_t( |
| 3549 | kauth_cred_t cred, |
| 3550 | struct shmid_kernel *shmsegptr, |
| 3551 | struct label *shmseglabel, |
| 3552 | int shmflg |
| 3553 | ); |
| 3554 | /** |
| 3555 | * @brief Create a System V shared memory region label |
| 3556 | * @param cred Subject credential |
| 3557 | * @param shmsegptr The shared memory region being created |
| 3558 | * @param shmlabel Label to associate with the new shared memory region |
| 3559 | * |
| 3560 | * Label a new System V shared memory region. The label was previously |
| 3561 | * initialized and associated with the shared memory region. At this |
| 3562 | * time, an appropriate initial label value should be assigned to the |
| 3563 | * object and stored in shmlabel. |
| 3564 | */ |
| 3565 | typedef void mpo_sysvshm_label_associate_t( |
| 3566 | kauth_cred_t cred, |
| 3567 | struct shmid_kernel *shmsegptr, |
| 3568 | struct label *shmlabel |
| 3569 | ); |
| 3570 | /** |
| 3571 | * @brief Destroy System V shared memory label |
| 3572 | * @param label The label to be destroyed |
| 3573 | * |
| 3574 | * Destroy a System V shared memory region label. Since the |
| 3575 | * object is going out of scope, policy modules should free any |
| 3576 | * internal storage associated with the label so that it may be |
| 3577 | * destroyed. |
| 3578 | */ |
| 3579 | typedef void mpo_sysvshm_label_destroy_t( |
| 3580 | struct label *label |
| 3581 | ); |
| 3582 | /** |
| 3583 | * @brief Initialize System V Shared Memory region label |
| 3584 | * @param label New label to initialize |
| 3585 | * |
| 3586 | * Initialize the label for a newly instantiated System V Shared Memory |
| 3587 | * region. Sleeping is permitted. |
| 3588 | */ |
| 3589 | typedef void mpo_sysvshm_label_init_t( |
| 3590 | struct label *label |
| 3591 | ); |
| 3592 | /** |
| 3593 | * @brief Clean up a System V Share Memory Region label |
| 3594 | * @param shmlabel The label to be cleaned |
| 3595 | * |
| 3596 | * Clean up a System V Shared Memory Region label. Darwin |
| 3597 | * pre-allocates these objects at system boot time and re-uses them |
| 3598 | * rather than allocating new ones. Before the memory regions are |
| 3599 | * returned to the "free pool", policies can cleanup or overwrite any |
| 3600 | * information present in the label. |
| 3601 | */ |
| 3602 | typedef void mpo_sysvshm_label_recycle_t( |
| 3603 | struct label *shmlabel |
| 3604 | ); |
| 3605 | |
| 3606 | /** |
| 3607 | * @brief Access control check for getting a process's task ports of different flavors |
| 3608 | * @param cred Subject credential |
| 3609 | * @param pident Object unique process identifier |
| 3610 | * @param flavor Requested task port flavor |
| 3611 | * |
| 3612 | * Determine whether the subject identified by the credential can get |
| 3613 | * the passed process's task port of given flavor. |
| 3614 | * This call is used by the task_{,read,inspect,name}_for_pid(2) API. |
| 3615 | * |
| 3616 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3617 | * errno should be returned. Suggested failure: EACCES for label mismatch, |
| 3618 | * EPERM for lack of privilege, or ESRCH to hide visibility of the target. |
| 3619 | */ |
| 3620 | typedef int mpo_proc_check_get_task_with_flavor_t( |
| 3621 | kauth_cred_t cred, |
| 3622 | struct proc_ident *pident, |
| 3623 | mach_task_flavor_t flavor |
| 3624 | ); |
| 3625 | |
| 3626 | /** |
| 3627 | * @brief Access control check for exposing a process's task ports of different flavors |
| 3628 | * @param cred Subject credential |
| 3629 | * @param pident Object unique process identifier |
| 3630 | * @param flavor Requested task port flavor |
| 3631 | * |
| 3632 | * Determine whether the subject identified by the credential can expose |
| 3633 | * the passed process's task port of given flavor. |
| 3634 | * This call is used by the accessor APIs like processor_set_tasks() and |
| 3635 | * processor_set_threads(). |
| 3636 | * |
| 3637 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3638 | * errno should be returned. Suggested failure: EACCES for label mismatch, |
| 3639 | * EPERM for lack of privilege, or ESRCH to hide visibility of the target. |
| 3640 | */ |
| 3641 | typedef int mpo_proc_check_expose_task_with_flavor_t( |
| 3642 | kauth_cred_t cred, |
| 3643 | struct proc_ident *pident, |
| 3644 | mach_task_flavor_t flavor |
| 3645 | ); |
| 3646 | |
| 3647 | /** |
| 3648 | * @brief Access control check for upgrading to task port with a task identity token |
| 3649 | * @param cred Subject credential |
| 3650 | * @param pident Object unique process identifier, NULL if token represents a corpse task |
| 3651 | * @param flavor Requested task port flavor |
| 3652 | * |
| 3653 | * Determine whether the subject identified by the credential can upgrade to task port |
| 3654 | * of given flavor with a task identity token of the passed process. |
| 3655 | * This call is used by task_identity_token_get_task_port(). |
| 3656 | * |
| 3657 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3658 | * errno should be returned. Suggested failure: EACCES for label mismatch, |
| 3659 | * EPERM for lack of privilege, or ESRCH to hide visibility of the target. |
| 3660 | */ |
| 3661 | typedef int mpo_proc_check_task_id_token_get_task_t( |
| 3662 | kauth_cred_t cred, |
| 3663 | struct proc_ident *pident, /* Nullable */ |
| 3664 | mach_task_flavor_t flavor |
| 3665 | ); |
| 3666 | |
| 3667 | /** |
| 3668 | * @brief Check whether task's IPC may inherit across process exec |
| 3669 | * @param p current process instance |
| 3670 | * @param cur_vp vnode pointer to current instance |
| 3671 | * @param cur_offset offset of binary of currently executing image |
| 3672 | * @param img_vp vnode pointer to to be exec'ed image |
| 3673 | * @param img_offset offset into file which is selected for execution |
| 3674 | * @param scriptvp vnode pointer of script file if any. |
| 3675 | * @return Return 0 if access is granted. |
| 3676 | * EPERM if parent does not have any entitlements. |
| 3677 | * EACCESS if mismatch in entitlements |
| 3678 | */ |
| 3679 | typedef int mpo_proc_check_inherit_ipc_ports_t( |
| 3680 | struct proc *p, |
| 3681 | struct vnode *cur_vp, |
| 3682 | off_t cur_offset, |
| 3683 | struct vnode *img_vp, |
| 3684 | off_t img_offset, |
| 3685 | struct vnode *scriptvp |
| 3686 | ); |
| 3687 | |
| 3688 | /** |
| 3689 | * @brief Privilege check for a process to run invalid |
| 3690 | * @param p Object process |
| 3691 | * |
| 3692 | * Determine whether the process may execute even though the system determined |
| 3693 | * that it is untrusted (eg unidentified / modified code). |
| 3694 | * |
| 3695 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3696 | * errno should be returned. |
| 3697 | */ |
| 3698 | typedef int mpo_proc_check_run_cs_invalid_t( |
| 3699 | struct proc *p |
| 3700 | ); |
| 3701 | |
| 3702 | /** |
| 3703 | * @brief Notification a process was invalidated |
| 3704 | * @param p Object process |
| 3705 | * |
| 3706 | * Notifies that the CS_VALID bit was removed from a process' csflags. This |
| 3707 | * either indicates that a validly code-signed process has encountered an |
| 3708 | * invalidly code-signed page for the first time, or that it was explicitly |
| 3709 | * marked invalid via a csops(CS_OPS_MARKINVALID) syscall. |
| 3710 | * |
| 3711 | * @warning This hook can be called from the page fault handler; it should not |
| 3712 | * perform any operations that may result in paging, and stack space is extremely |
| 3713 | * limited. Furthermore, the hook is called with proc lock held, and if called |
| 3714 | * from the fault handler, with vm object lock held. Consumers reacting to this |
| 3715 | * hook being called are expected to defer processing to a userret, possibly |
| 3716 | * after suspending the task. |
| 3717 | */ |
| 3718 | typedef void mpo_proc_notify_cs_invalidated_t( |
| 3719 | struct proc *p |
| 3720 | ); |
| 3721 | |
| 3722 | /** |
| 3723 | * @brief Notification a process is finished with exec and will jump to userspace |
| 3724 | * @param p Object process |
| 3725 | * |
| 3726 | * Notifies all MAC policies that a process has completed an exec and is about to |
| 3727 | * jump to userspace to continue execution. This may result in process termination |
| 3728 | * via signals. Hook is designed to hold no/minimal locks so it can be used for any |
| 3729 | * necessary upcalls. |
| 3730 | */ |
| 3731 | typedef void mpo_proc_notify_exec_complete_t( |
| 3732 | struct proc *p |
| 3733 | ); |
| 3734 | |
| 3735 | /** |
| 3736 | * @brief Access control check for setting user ID |
| 3737 | * @param cred Subject credential |
| 3738 | * @param uid Requested user ID |
| 3739 | * |
| 3740 | * Determine whether the subject identified by the credential can set the |
| 3741 | * real and effective user ID and the saved set-user-ID of the current |
| 3742 | * process, using the setuid() system call. |
| 3743 | * |
| 3744 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3745 | * errno should be returned. |
| 3746 | */ |
| 3747 | typedef int mpo_proc_check_setuid_t( |
| 3748 | kauth_cred_t cred, |
| 3749 | uid_t uid |
| 3750 | ); |
| 3751 | |
| 3752 | /** |
| 3753 | * @brief Access control check for setting effective user ID |
| 3754 | * @param cred Subject credential |
| 3755 | * @param euid Requested effective user ID |
| 3756 | * |
| 3757 | * Determine whether the subject identified by the credential can set the |
| 3758 | * effective user ID of the current process, using the seteuid() system call. |
| 3759 | * |
| 3760 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3761 | * errno should be returned. |
| 3762 | */ |
| 3763 | typedef int mpo_proc_check_seteuid_t( |
| 3764 | kauth_cred_t cred, |
| 3765 | uid_t euid |
| 3766 | ); |
| 3767 | |
| 3768 | /** |
| 3769 | * @brief Access control check for setting real and effective user ID |
| 3770 | * @param cred Subject credential |
| 3771 | * @param ruid Requested real user ID |
| 3772 | * @param euid Requested effective user ID |
| 3773 | * |
| 3774 | * Determine whether the subject identified by the credential can set the |
| 3775 | * real and effective user ID of the current process, using the setreuid() |
| 3776 | * system call. |
| 3777 | * |
| 3778 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3779 | * errno should be returned. |
| 3780 | */ |
| 3781 | typedef int mpo_proc_check_setreuid_t( |
| 3782 | kauth_cred_t cred, |
| 3783 | uid_t ruid, |
| 3784 | uid_t euid |
| 3785 | ); |
| 3786 | |
| 3787 | /** |
| 3788 | * @brief Access control check for setting group ID |
| 3789 | * @param cred Subject credential |
| 3790 | * @param gid Requested group ID |
| 3791 | * |
| 3792 | * Determine whether the subject identified by the credential can set the |
| 3793 | * real and effective group IDs and the saved set-group-ID of the current |
| 3794 | * process, using the setgid() system call. |
| 3795 | * |
| 3796 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3797 | * errno should be returned. |
| 3798 | */ |
| 3799 | typedef int mpo_proc_check_setgid_t( |
| 3800 | kauth_cred_t cred, |
| 3801 | gid_t gid |
| 3802 | ); |
| 3803 | |
| 3804 | /** |
| 3805 | * @brief Access control check for setting effective group ID |
| 3806 | * @param cred Subject credential |
| 3807 | * @param egid Requested effective group ID |
| 3808 | * |
| 3809 | * Determine whether the subject identified by the credential can set the |
| 3810 | * effective group ID of the current process, using the setegid() system call. |
| 3811 | * |
| 3812 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3813 | * errno should be returned. |
| 3814 | */ |
| 3815 | typedef int mpo_proc_check_setegid_t( |
| 3816 | kauth_cred_t cred, |
| 3817 | gid_t egid |
| 3818 | ); |
| 3819 | |
| 3820 | /** |
| 3821 | * @brief Access control check for setting real and effective group ID |
| 3822 | * @param cred Subject credential |
| 3823 | * @param rgid Requested real group ID or KAUTH_UID_NONE for none |
| 3824 | * @param egid Requested effective group ID or KAUTH_GID_NONE for none |
| 3825 | * |
| 3826 | * Determine whether the subject identified by the credential can set the |
| 3827 | * real and effective group ID of the current process, using the setregid() |
| 3828 | * system call. |
| 3829 | * |
| 3830 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3831 | * errno should be returned. |
| 3832 | */ |
| 3833 | typedef int mpo_proc_check_setregid_t( |
| 3834 | kauth_cred_t cred, |
| 3835 | gid_t rgid, |
| 3836 | gid_t egid |
| 3837 | ); |
| 3838 | |
| 3839 | /** |
| 3840 | * @brief Access control check for setting thread assumed identity |
| 3841 | * @param pcred Subject process credential |
| 3842 | * @param tcred Subject thread credential |
| 3843 | * @param uid Requested user ID or KAUTH_UID_NONE for none |
| 3844 | * @param gid Requested group ID or KAUTH_GID_NONE for none |
| 3845 | * |
| 3846 | * Determine whether the subject identified by the credential can set the |
| 3847 | * user and group ID of the current thread, using the settid() or |
| 3848 | * settid_with_pid() system call. |
| 3849 | * |
| 3850 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3851 | * errno should be returned. |
| 3852 | */ |
| 3853 | typedef int mpo_proc_check_settid_t( |
| 3854 | kauth_cred_t pcred, |
| 3855 | kauth_cred_t tcred, |
| 3856 | uid_t uid, |
| 3857 | gid_t gid |
| 3858 | ); |
| 3859 | |
| 3860 | /** |
| 3861 | * @brief Notification of connection port derivation from service port |
| 3862 | * @param cred Subject process credential |
| 3863 | * @param sp_info Service port info |
| 3864 | * |
| 3865 | * Called when a process derives a connection port from a service port. |
| 3866 | * |
| 3867 | * Notes: |
| 3868 | * - Port derivation is only mandatory if the receiving end of the |
| 3869 | * connection performs validation of that fact. |
| 3870 | * - MAC policies should not perform upcalls or expensive operations in |
| 3871 | * this hook. |
| 3872 | * - Only called on macOS. |
| 3873 | */ |
| 3874 | typedef void mpo_proc_notify_service_port_derive_t( |
| 3875 | kauth_cred_t cred, |
| 3876 | struct mach_service_port_info *sp_info |
| 3877 | ); |
| 3878 | |
| 3879 | /** |
| 3880 | * @brief Perform MAC-related analysis of telemetry data. |
| 3881 | * @param thread The Mach thread that was sampled. |
| 3882 | * |
| 3883 | * Notifies MAC policies that telemetry data was just collected from a |
| 3884 | * process's user thread and that it is ready to be analyzed. The analysis is |
| 3885 | * performed shortly before a thread is about to return to userspace via a |
| 3886 | * syscall or mach trap. |
| 3887 | * |
| 3888 | * Note that sometimes the scheduled telemetry can fail. In the case of |
| 3889 | * failure, the function will be called with a non-zero `err` value, in which |
| 3890 | * case it is expected that the client will cleanup any necessary state |
| 3891 | * recorded back when the telemetry was first scheduled. |
| 3892 | */ |
| 3893 | typedef void mpo_thread_telemetry_t( |
| 3894 | struct thread *thread, |
| 3895 | int err, |
| 3896 | const void *data, |
| 3897 | size_t length |
| 3898 | ); |
| 3899 | |
| 3900 | /** |
| 3901 | * @brief Perform MAC-related events when a thread returns to user space |
| 3902 | * @param thread Mach (not BSD) thread that is returning |
| 3903 | * |
| 3904 | * This entry point permits policy modules to perform MAC-related |
| 3905 | * events when a thread returns to user space, via a system call |
| 3906 | * return or trap return. |
| 3907 | */ |
| 3908 | typedef void mpo_thread_userret_t( |
| 3909 | struct thread *thread |
| 3910 | ); |
| 3911 | |
| 3912 | /** |
| 3913 | * @brief Check vnode access |
| 3914 | * @param cred Subject credential |
| 3915 | * @param vp Object vnode |
| 3916 | * @param label Label for vp |
| 3917 | * @param acc_mode access(2) flags |
| 3918 | * |
| 3919 | * Determine how invocations of access(2) and related calls by the |
| 3920 | * subject identified by the credential should return when performed |
| 3921 | * on the passed vnode using the passed access flags. This should |
| 3922 | * generally be implemented using the same semantics used in |
| 3923 | * mpo_vnode_check_open. |
| 3924 | * |
| 3925 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3926 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 3927 | * EPERM for lack of privilege. |
| 3928 | */ |
| 3929 | typedef int mpo_vnode_check_access_t( |
| 3930 | kauth_cred_t cred, |
| 3931 | struct vnode *vp, |
| 3932 | struct label *label, |
| 3933 | int acc_mode |
| 3934 | ); |
| 3935 | /** |
| 3936 | * @brief Access control check for changing working directory |
| 3937 | * @param cred Subject credential |
| 3938 | * @param dvp Object; vnode to chdir(2) into |
| 3939 | * @param dlabel Policy label for dvp |
| 3940 | * |
| 3941 | * Determine whether the subject identified by the credential can change |
| 3942 | * the process working directory to the passed vnode. |
| 3943 | * |
| 3944 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3945 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 3946 | * EPERM for lack of privilege. |
| 3947 | */ |
| 3948 | typedef int mpo_vnode_check_chdir_t( |
| 3949 | kauth_cred_t cred, |
| 3950 | struct vnode *dvp, |
| 3951 | struct label *dlabel |
| 3952 | ); |
| 3953 | /** |
| 3954 | * @brief Access control check for changing root directory |
| 3955 | * @param cred Subject credential |
| 3956 | * @param dvp Directory vnode |
| 3957 | * @param dlabel Policy label associated with dvp |
| 3958 | * @param cnp Component name for dvp |
| 3959 | * |
| 3960 | * Determine whether the subject identified by the credential should be |
| 3961 | * allowed to chroot(2) into the specified directory (dvp). |
| 3962 | * |
| 3963 | * @return In the event of an error, an appropriate value for errno |
| 3964 | * should be returned, otherwise return 0 upon success. |
| 3965 | */ |
| 3966 | typedef int mpo_vnode_check_chroot_t( |
| 3967 | kauth_cred_t cred, |
| 3968 | struct vnode *dvp, |
| 3969 | struct label *dlabel, |
| 3970 | struct componentname *cnp |
| 3971 | ); |
| 3972 | /** |
| 3973 | * @brief Access control check for creating clone |
| 3974 | * @param cred Subject credential |
| 3975 | * @param dvp Vnode of directory to create the clone in |
| 3976 | * @param dlabel Policy label associated with dvp |
| 3977 | * @param vp Vnode of the file to clone from |
| 3978 | * @param label Policy label associated with vp |
| 3979 | * @param cnp Component name for the clone being created |
| 3980 | * |
| 3981 | * Determine whether the subject identified by the credential should be |
| 3982 | * allowed to create a clone of the vnode vp with the name specified by cnp. |
| 3983 | * |
| 3984 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 3985 | * errno should be returned. |
| 3986 | */ |
| 3987 | typedef int mpo_vnode_check_clone_t( |
| 3988 | kauth_cred_t cred, |
| 3989 | struct vnode *dvp, |
| 3990 | struct label *dlabel, |
| 3991 | struct vnode *vp, |
| 3992 | struct label *label, |
| 3993 | struct componentname *cnp |
| 3994 | ); |
| 3995 | /** |
| 3996 | * @brief Access control check for creating vnode |
| 3997 | * @param cred Subject credential |
| 3998 | * @param dvp Directory vnode |
| 3999 | * @param dlabel Policy label for dvp |
| 4000 | * @param cnp Component name for dvp |
| 4001 | * @param vap vnode attributes for vap |
| 4002 | * |
| 4003 | * Determine whether the subject identified by the credential can create |
| 4004 | * a vnode with the passed parent directory, passed name information, |
| 4005 | * and passed attribute information. This call may be made in a number of |
| 4006 | * situations, including as a result of calls to open(2) with O_CREAT, |
| 4007 | * mknod(2), mkfifo(2), and others. |
| 4008 | * |
| 4009 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4010 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4011 | * EPERM for lack of privilege. |
| 4012 | */ |
| 4013 | typedef int mpo_vnode_check_create_t( |
| 4014 | kauth_cred_t cred, |
| 4015 | struct vnode *dvp, |
| 4016 | struct label *dlabel, |
| 4017 | struct componentname *cnp, |
| 4018 | struct vnode_attr *vap |
| 4019 | ); |
| 4020 | /** |
| 4021 | * @brief Access control check for deleting extended attribute |
| 4022 | * @param cred Subject credential |
| 4023 | * @param vp Object vnode |
| 4024 | * @param vlabel Label associated with vp |
| 4025 | * @param name Extended attribute name |
| 4026 | * |
| 4027 | * Determine whether the subject identified by the credential can delete |
| 4028 | * the extended attribute from the passed vnode. |
| 4029 | * |
| 4030 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4031 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4032 | * EPERM for lack of privilege. |
| 4033 | */ |
| 4034 | typedef int mpo_vnode_check_deleteextattr_t( |
| 4035 | kauth_cred_t cred, |
| 4036 | struct vnode *vp, |
| 4037 | struct label *vlabel, |
| 4038 | const char *name |
| 4039 | ); |
| 4040 | /** |
| 4041 | * @brief Access control check for exchanging file data |
| 4042 | * @param cred Subject credential |
| 4043 | * @param v1 vnode 1 to swap |
| 4044 | * @param vl1 Policy label for v1 |
| 4045 | * @param v2 vnode 2 to swap |
| 4046 | * @param vl2 Policy label for v2 |
| 4047 | * |
| 4048 | * Determine whether the subject identified by the credential can swap the data |
| 4049 | * in the two supplied vnodes. |
| 4050 | * |
| 4051 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4052 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4053 | * EPERM for lack of privilege. |
| 4054 | */ |
| 4055 | typedef int mpo_vnode_check_exchangedata_t( |
| 4056 | kauth_cred_t cred, |
| 4057 | struct vnode *v1, |
| 4058 | struct label *vl1, |
| 4059 | struct vnode *v2, |
| 4060 | struct label *vl2 |
| 4061 | ); |
| 4062 | /** |
| 4063 | * @brief Access control check for executing the vnode |
| 4064 | * @param cred Subject credential |
| 4065 | * @param vp Object vnode to execute |
| 4066 | * @param scriptvp Script being executed by interpreter, if any. |
| 4067 | * @param vnodelabel Label corresponding to vp |
| 4068 | * @param scriptlabel Script vnode label |
| 4069 | * @param execlabel Userspace provided execution label |
| 4070 | * @param cnp Component name for file being executed |
| 4071 | * @param macpolicyattr MAC policy-specific spawn attribute data. |
| 4072 | * @param macpolicyattrlen Length of policy-specific spawn attribute data. |
| 4073 | * |
| 4074 | * Determine whether the subject identified by the credential can execute |
| 4075 | * the passed vnode. Determination of execute privilege is made separately |
| 4076 | * from decisions about any process label transitioning event. |
| 4077 | * |
| 4078 | * The final label, execlabel, corresponds to a label supplied by a |
| 4079 | * user space application through the use of the mac_execve system call. |
| 4080 | * This label will be NULL if the user application uses the the vendor |
| 4081 | * execve(2) call instead of the MAC Framework mac_execve() call. |
| 4082 | * |
| 4083 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4084 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4085 | * EPERM for lack of privilege. |
| 4086 | */ |
| 4087 | typedef int mpo_vnode_check_exec_t( |
| 4088 | kauth_cred_t cred, |
| 4089 | struct vnode *vp, |
| 4090 | struct vnode *scriptvp, |
| 4091 | struct label *vnodelabel, |
| 4092 | struct label *scriptlabel, |
| 4093 | struct label *execlabel, /* NULLOK */ |
| 4094 | struct componentname *cnp, |
| 4095 | u_int *csflags, |
| 4096 | void *macpolicyattr, |
| 4097 | size_t macpolicyattrlen |
| 4098 | ); |
| 4099 | /** |
| 4100 | * @brief Access control check for fsgetpath |
| 4101 | * @param cred Subject credential |
| 4102 | * @param vp Vnode for which a path will be returned |
| 4103 | * @param label Label associated with the vnode |
| 4104 | * |
| 4105 | * Determine whether the subject identified by the credential can get the path |
| 4106 | * of the given vnode with fsgetpath. |
| 4107 | * |
| 4108 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4109 | * errno should be returned. |
| 4110 | */ |
| 4111 | typedef int mpo_vnode_check_fsgetpath_t( |
| 4112 | kauth_cred_t cred, |
| 4113 | struct vnode *vp, |
| 4114 | struct label *label |
| 4115 | ); |
| 4116 | /** |
| 4117 | * @brief Access control check for retrieving file attributes |
| 4118 | * @param active_cred Subject credential |
| 4119 | * @param file_cred Credential associated with the struct fileproc |
| 4120 | * @param vp Object vnode |
| 4121 | * @param vlabel Policy label for vp |
| 4122 | * @param va Vnode attributes to retrieve |
| 4123 | * |
| 4124 | * Determine whether the subject identified by the credential can |
| 4125 | * get information about the passed vnode. The active_cred hold |
| 4126 | * the credentials of the subject performing the operation, and |
| 4127 | * file_cred holds the credentials of the subject that originally |
| 4128 | * opened the file. This check happens during stat(), lstat(), |
| 4129 | * fstat(), and getattrlist() syscalls. See <sys/vnode.h> for |
| 4130 | * definitions of the attributes. |
| 4131 | * |
| 4132 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4133 | * errno should be returned. |
| 4134 | * |
| 4135 | * @note Policies may change the contents of va to alter the list of |
| 4136 | * file attributes returned. |
| 4137 | */ |
| 4138 | typedef int mpo_vnode_check_getattr_t( |
| 4139 | kauth_cred_t active_cred, |
| 4140 | kauth_cred_t file_cred, /* NULLOK */ |
| 4141 | struct vnode *vp, |
| 4142 | struct label *vlabel, |
| 4143 | struct vnode_attr *va |
| 4144 | ); |
| 4145 | /** |
| 4146 | * @brief Access control check for retrieving file attributes |
| 4147 | * @param cred Subject credential |
| 4148 | * @param vp Object vnode |
| 4149 | * @param vlabel Policy label for vp |
| 4150 | * @param alist List of attributes to retrieve |
| 4151 | * @param options Option flags for alist |
| 4152 | * |
| 4153 | * Determine whether the subject identified by the credential can read |
| 4154 | * various attributes of the specified vnode, or the filesystem or volume on |
| 4155 | * which that vnode resides. See <sys/attr.h> for definitions of the |
| 4156 | * attributes and flags. |
| 4157 | * |
| 4158 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4159 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4160 | * EPERM for lack of privilege. Access control covers all attributes requested |
| 4161 | * with this call; the security policy is not permitted to change the set of |
| 4162 | * attributes requested. |
| 4163 | */ |
| 4164 | typedef int mpo_vnode_check_getattrlist_t( |
| 4165 | kauth_cred_t cred, |
| 4166 | struct vnode *vp, |
| 4167 | struct label *vlabel, |
| 4168 | struct attrlist *alist, |
| 4169 | uint64_t options |
| 4170 | ); |
| 4171 | /** |
| 4172 | * @brief Access control check for retrieving file attributes for multiple directory entries |
| 4173 | * @param cred Subject credential |
| 4174 | * @param dvp Directory vnode |
| 4175 | * @param alist List of attributes to retrieve |
| 4176 | * @param options Option flags for alist |
| 4177 | * |
| 4178 | * Determine whether the subject identified by the credential can read |
| 4179 | * various attributes of the specified vnode, or the filesystem or volume on |
| 4180 | * which that vnode resides. See <sys/attr.h> for definitions of the |
| 4181 | * attributes and flags. |
| 4182 | * |
| 4183 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4184 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4185 | * EPERM for lack of privilege. Access control covers all attributes requested |
| 4186 | * with this call; the security policy is not permitted to change the set of |
| 4187 | * attributes requested. |
| 4188 | */ |
| 4189 | typedef int mpo_vnode_check_getattrlistbulk_t( |
| 4190 | kauth_cred_t cred, |
| 4191 | struct vnode *dvp, |
| 4192 | struct attrlist *alist, |
| 4193 | uint64_t options |
| 4194 | ); |
| 4195 | /** |
| 4196 | * @brief Access control check for retrieving an extended attribute |
| 4197 | * @param cred Subject credential |
| 4198 | * @param vp Object vnode |
| 4199 | * @param label Policy label for vp |
| 4200 | * @param name Extended attribute name |
| 4201 | * @param uio I/O structure pointer |
| 4202 | * |
| 4203 | * Determine whether the subject identified by the credential can retrieve |
| 4204 | * the extended attribute from the passed vnode. The uio parameter |
| 4205 | * will be NULL when the getxattr(2) call has been made with a NULL data |
| 4206 | * value; this is done to request the size of the data only. |
| 4207 | * |
| 4208 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4209 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4210 | * EPERM for lack of privilege. |
| 4211 | */ |
| 4212 | typedef int mpo_vnode_check_getextattr_t( |
| 4213 | kauth_cred_t cred, |
| 4214 | struct vnode *vp, |
| 4215 | struct label *label, /* NULLOK */ |
| 4216 | const char *name, |
| 4217 | struct uio *uio /* NULLOK */ |
| 4218 | ); |
| 4219 | /** |
| 4220 | * @brief Access control check for ioctl |
| 4221 | * @param cred Subject credential |
| 4222 | * @param vp Object vnode |
| 4223 | * @param label Policy label for vp |
| 4224 | * @param cmd Device-dependent request code; see ioctl(2) |
| 4225 | * |
| 4226 | * Determine whether the subject identified by the credential can perform |
| 4227 | * the ioctl operation indicated by com. |
| 4228 | * |
| 4229 | * @warning Since ioctl data is opaque from the standpoint of the MAC |
| 4230 | * framework, and since ioctls can affect many aspects of system |
| 4231 | * operation, policies must exercise extreme care when implementing |
| 4232 | * access control checks. |
| 4233 | * |
| 4234 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4235 | * errno should be returned. |
| 4236 | */ |
| 4237 | typedef int mpo_vnode_check_ioctl_t( |
| 4238 | kauth_cred_t cred, |
| 4239 | struct vnode *vp, |
| 4240 | struct label *label, |
| 4241 | unsigned long cmd |
| 4242 | ); |
| 4243 | /** |
| 4244 | * @brief Access control check for vnode kqfilter |
| 4245 | * @param active_cred Subject credential |
| 4246 | * @param kn Object knote |
| 4247 | * @param vp Object vnode |
| 4248 | * @param label Policy label for vp |
| 4249 | * |
| 4250 | * Determine whether the subject identified by the credential can |
| 4251 | * receive the knote on the passed vnode. |
| 4252 | * |
| 4253 | * @return Return 0 if access if granted, otherwise an appropriate |
| 4254 | * value for errno should be returned. |
| 4255 | */ |
| 4256 | typedef int mpo_vnode_check_kqfilter_t( |
| 4257 | kauth_cred_t active_cred, |
| 4258 | kauth_cred_t file_cred, /* NULLOK */ |
| 4259 | struct knote *kn, |
| 4260 | struct vnode *vp, |
| 4261 | struct label *label |
| 4262 | ); |
| 4263 | /** |
| 4264 | * @brief Access control check for relabel |
| 4265 | * @param cred Subject credential |
| 4266 | * @param vp Object vnode |
| 4267 | * @param vnodelabel Existing policy label for vp |
| 4268 | * @param newlabel Policy label update to later be applied to vp |
| 4269 | * @see mpo_relable_vnode_t |
| 4270 | * |
| 4271 | * Determine whether the subject identified by the credential can relabel |
| 4272 | * the passed vnode to the passed label update. If all policies permit |
| 4273 | * the label change, the actual relabel entry point (mpo_vnode_label_update) |
| 4274 | * will follow. |
| 4275 | * |
| 4276 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4277 | * errno should be returned. |
| 4278 | */ |
| 4279 | typedef int mpo_vnode_check_label_update_t( |
| 4280 | struct ucred *cred, |
| 4281 | struct vnode *vp, |
| 4282 | struct label *vnodelabel, |
| 4283 | struct label *newlabel |
| 4284 | ); |
| 4285 | /** |
| 4286 | * @brief Access control check for creating link |
| 4287 | * @param cred Subject credential |
| 4288 | * @param dvp Directory vnode |
| 4289 | * @param dlabel Policy label associated with dvp |
| 4290 | * @param vp Link destination vnode |
| 4291 | * @param label Policy label associated with vp |
| 4292 | * @param cnp Component name for the link being created |
| 4293 | * |
| 4294 | * Determine whether the subject identified by the credential should be |
| 4295 | * allowed to create a link to the vnode vp with the name specified by cnp. |
| 4296 | * |
| 4297 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4298 | * errno should be returned. |
| 4299 | */ |
| 4300 | typedef int mpo_vnode_check_link_t( |
| 4301 | kauth_cred_t cred, |
| 4302 | struct vnode *dvp, |
| 4303 | struct label *dlabel, |
| 4304 | struct vnode *vp, |
| 4305 | struct label *label, |
| 4306 | struct componentname *cnp |
| 4307 | ); |
| 4308 | /** |
| 4309 | * @brief Access control check for listing extended attributes |
| 4310 | * @param cred Subject credential |
| 4311 | * @param vp Object vnode |
| 4312 | * @param vlabel Policy label associated with vp |
| 4313 | * |
| 4314 | * Determine whether the subject identified by the credential can retrieve |
| 4315 | * a list of named extended attributes from a vnode. |
| 4316 | * |
| 4317 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4318 | * errno should be returned. |
| 4319 | */ |
| 4320 | typedef int mpo_vnode_check_listextattr_t( |
| 4321 | kauth_cred_t cred, |
| 4322 | struct vnode *vp, |
| 4323 | struct label *vlabel |
| 4324 | ); |
| 4325 | /** |
| 4326 | * @brief Access control check for lookup |
| 4327 | * @param cred Subject credential |
| 4328 | * @param dvp Directory vnode |
| 4329 | * @param dlabel Policy label for dvp |
| 4330 | * @param path Path being looked up |
| 4331 | * @param pathlen Length of path in bytes |
| 4332 | * |
| 4333 | * Determine whether the subject identified by the credential can perform |
| 4334 | * a lookup of the passed path relative to the passed directory vnode. |
| 4335 | * |
| 4336 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4337 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4338 | * EPERM for lack of privilege. |
| 4339 | * |
| 4340 | * @note The path may contain untrusted input. If approved, lookup proceeds |
| 4341 | * on the path; if a component is found to be a symlink then this hook is |
| 4342 | * called again with the updated path. |
| 4343 | */ |
| 4344 | typedef int mpo_vnode_check_lookup_preflight_t( |
| 4345 | kauth_cred_t cred, |
| 4346 | struct vnode *dvp, |
| 4347 | struct label *dlabel, |
| 4348 | const char *path, |
| 4349 | size_t pathlen |
| 4350 | ); |
| 4351 | /** |
| 4352 | * @brief Access control check for lookup |
| 4353 | * @param cred Subject credential |
| 4354 | * @param dvp Object vnode |
| 4355 | * @param dlabel Policy label for dvp |
| 4356 | * @param cnp Component name being looked up |
| 4357 | * |
| 4358 | * Determine whether the subject identified by the credential can perform |
| 4359 | * a lookup in the passed directory vnode for the passed name (cnp). |
| 4360 | * |
| 4361 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4362 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4363 | * EPERM for lack of privilege. |
| 4364 | */ |
| 4365 | typedef int mpo_vnode_check_lookup_t( |
| 4366 | kauth_cred_t cred, |
| 4367 | struct vnode *dvp, |
| 4368 | struct label *dlabel, |
| 4369 | struct componentname *cnp |
| 4370 | ); |
| 4371 | /** |
| 4372 | * @brief Access control check for open |
| 4373 | * @param cred Subject credential |
| 4374 | * @param vp Object vnode |
| 4375 | * @param label Policy label associated with vp |
| 4376 | * @param acc_mode open(2) access mode |
| 4377 | * |
| 4378 | * Determine whether the subject identified by the credential can perform |
| 4379 | * an open operation on the passed vnode with the passed access mode. |
| 4380 | * |
| 4381 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4382 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4383 | * EPERM for lack of privilege. |
| 4384 | */ |
| 4385 | typedef int mpo_vnode_check_open_t( |
| 4386 | kauth_cred_t cred, |
| 4387 | struct vnode *vp, |
| 4388 | struct label *label, |
| 4389 | int acc_mode |
| 4390 | ); |
| 4391 | /** |
| 4392 | * @brief Access control check for read |
| 4393 | * @param active_cred Subject credential |
| 4394 | * @param file_cred Credential associated with the struct fileproc |
| 4395 | * @param vp Object vnode |
| 4396 | * @param label Policy label for vp |
| 4397 | * |
| 4398 | * Determine whether the subject identified by the credential can perform |
| 4399 | * a read operation on the passed vnode. The active_cred hold the credentials |
| 4400 | * of the subject performing the operation, and file_cred holds the |
| 4401 | * credentials of the subject that originally opened the file. |
| 4402 | * |
| 4403 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4404 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4405 | * EPERM for lack of privilege. |
| 4406 | */ |
| 4407 | typedef int mpo_vnode_check_read_t( |
| 4408 | kauth_cred_t active_cred, /* SUBJECT */ |
| 4409 | kauth_cred_t file_cred, /* NULLOK */ |
| 4410 | struct vnode *vp, /* OBJECT */ |
| 4411 | struct label *label /* LABEL */ |
| 4412 | ); |
| 4413 | /** |
| 4414 | * @brief Access control check for read directory |
| 4415 | * @param cred Subject credential |
| 4416 | * @param dvp Object directory vnode |
| 4417 | * @param dlabel Policy label for dvp |
| 4418 | * |
| 4419 | * Determine whether the subject identified by the credential can |
| 4420 | * perform a readdir operation on the passed directory vnode. |
| 4421 | * |
| 4422 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4423 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4424 | * EPERM for lack of privilege. |
| 4425 | */ |
| 4426 | typedef int mpo_vnode_check_readdir_t( |
| 4427 | kauth_cred_t cred, /* SUBJECT */ |
| 4428 | struct vnode *dvp, /* OBJECT */ |
| 4429 | struct label *dlabel /* LABEL */ |
| 4430 | ); |
| 4431 | /** |
| 4432 | * @brief Access control check for read link |
| 4433 | * @param cred Subject credential |
| 4434 | * @param vp Object vnode |
| 4435 | * @param label Policy label for vp |
| 4436 | * |
| 4437 | * Determine whether the subject identified by the credential can perform |
| 4438 | * a readlink operation on the passed symlink vnode. This call can be made |
| 4439 | * in a number of situations, including an explicit readlink call by the |
| 4440 | * user process, or as a result of an implicit readlink during a name |
| 4441 | * lookup by the process. |
| 4442 | * |
| 4443 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4444 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4445 | * EPERM for lack of privilege. |
| 4446 | */ |
| 4447 | typedef int mpo_vnode_check_readlink_t( |
| 4448 | kauth_cred_t cred, |
| 4449 | struct vnode *vp, |
| 4450 | struct label *label |
| 4451 | ); |
| 4452 | /** |
| 4453 | * @brief Access control check for rename |
| 4454 | * @param cred Subject credential |
| 4455 | * @param dvp Directory vnode |
| 4456 | * @param dlabel Policy label associated with dvp |
| 4457 | * @param vp vnode to be renamed |
| 4458 | * @param label Policy label associated with vp |
| 4459 | * @param cnp Component name for vp |
| 4460 | * @param tdvp Destination directory vnode |
| 4461 | * @param tdlabel Policy label associated with tdvp |
| 4462 | * @param tvp Overwritten vnode |
| 4463 | * @param tlabel Policy label associated with tvp |
| 4464 | * @param tcnp Destination component name |
| 4465 | * |
| 4466 | * Determine whether the subject identified by the credential should be allowed |
| 4467 | * to rename the vnode vp to something else. |
| 4468 | * |
| 4469 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4470 | * errno should be returned. |
| 4471 | */ |
| 4472 | typedef int mpo_vnode_check_rename_t( |
| 4473 | kauth_cred_t cred, |
| 4474 | struct vnode *dvp, |
| 4475 | struct label *dlabel, |
| 4476 | struct vnode *vp, |
| 4477 | struct label *label, |
| 4478 | struct componentname *cnp, |
| 4479 | struct vnode *tdvp, |
| 4480 | struct label *tdlabel, |
| 4481 | struct vnode *tvp, |
| 4482 | struct label *tlabel, |
| 4483 | struct componentname *tcnp |
| 4484 | ); |
| 4485 | /** |
| 4486 | * @brief Access control check for rename from |
| 4487 | * @param cred Subject credential |
| 4488 | * @param dvp Directory vnode |
| 4489 | * @param dlabel Policy label associated with dvp |
| 4490 | * @param vp vnode to be renamed |
| 4491 | * @param label Policy label associated with vp |
| 4492 | * @param cnp Component name for vp |
| 4493 | * @see mpo_vnode_check_rename_t |
| 4494 | * @see mpo_vnode_check_rename_to_t |
| 4495 | * |
| 4496 | * Determine whether the subject identified by the credential should be |
| 4497 | * allowed to rename the vnode vp to something else. |
| 4498 | * |
| 4499 | * Due to VFS locking constraints (to make sure proper vnode locks are |
| 4500 | * held during this entry point), the vnode relabel checks had to be |
| 4501 | * split into two parts: relabel_from and relabel to. |
| 4502 | * |
| 4503 | * This hook is deprecated, mpo_vnode_check_rename_t should be used instead. |
| 4504 | * |
| 4505 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4506 | * errno should be returned. |
| 4507 | */ |
| 4508 | typedef int mpo_vnode_check_rename_from_t( |
| 4509 | kauth_cred_t cred, |
| 4510 | struct vnode *dvp, |
| 4511 | struct label *dlabel, |
| 4512 | struct vnode *vp, |
| 4513 | struct label *label, |
| 4514 | struct componentname *cnp |
| 4515 | ); |
| 4516 | /** |
| 4517 | * @brief Access control check for rename to |
| 4518 | * @param cred Subject credential |
| 4519 | * @param dvp Directory vnode |
| 4520 | * @param dlabel Policy label associated with dvp |
| 4521 | * @param vp Overwritten vnode |
| 4522 | * @param label Policy label associated with vp |
| 4523 | * @param samedir Boolean; 1 if the source and destination directories are the same |
| 4524 | * @param cnp Destination component name |
| 4525 | * @see mpo_vnode_check_rename_t |
| 4526 | * @see mpo_vnode_check_rename_from_t |
| 4527 | * |
| 4528 | * Determine whether the subject identified by the credential should be |
| 4529 | * allowed to rename to the vnode vp, into the directory dvp, or to the |
| 4530 | * name represented by cnp. If there is no existing file to overwrite, |
| 4531 | * vp and label will be NULL. |
| 4532 | * |
| 4533 | * Due to VFS locking constraints (to make sure proper vnode locks are |
| 4534 | * held during this entry point), the vnode relabel checks had to be |
| 4535 | * split into two parts: relabel_from and relabel to. |
| 4536 | * |
| 4537 | * This hook is deprecated, mpo_vnode_check_rename_t should be used instead. |
| 4538 | * |
| 4539 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4540 | * errno should be returned. |
| 4541 | */ |
| 4542 | typedef int mpo_vnode_check_rename_to_t( |
| 4543 | kauth_cred_t cred, |
| 4544 | struct vnode *dvp, |
| 4545 | struct label *dlabel, |
| 4546 | struct vnode *vp, /* NULLOK */ |
| 4547 | struct label *label, /* NULLOK */ |
| 4548 | int samedir, |
| 4549 | struct componentname *cnp |
| 4550 | ); |
| 4551 | /** |
| 4552 | * @brief Access control check for revoke |
| 4553 | * @param cred Subject credential |
| 4554 | * @param vp Object vnode |
| 4555 | * @param label Policy label for vp |
| 4556 | * |
| 4557 | * Determine whether the subject identified by the credential can revoke |
| 4558 | * access to the passed vnode. |
| 4559 | * |
| 4560 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4561 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4562 | * EPERM for lack of privilege. |
| 4563 | */ |
| 4564 | typedef int mpo_vnode_check_revoke_t( |
| 4565 | kauth_cred_t cred, |
| 4566 | struct vnode *vp, |
| 4567 | struct label *label |
| 4568 | ); |
| 4569 | /** |
| 4570 | * @brief Access control check for searchfs |
| 4571 | * @param cred Subject credential |
| 4572 | * @param vp Object vnode |
| 4573 | * @param vlabel Policy label for vp |
| 4574 | * @param returnattrs List of attributes to be returned |
| 4575 | * @param searchattrs List of attributes used as search criteria |
| 4576 | * |
| 4577 | * Determine whether the subject identified by the credential can search the |
| 4578 | * vnode using the searchfs system call. |
| 4579 | * |
| 4580 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4581 | * errno should be returned. |
| 4582 | */ |
| 4583 | typedef int mpo_vnode_check_searchfs_t( |
| 4584 | kauth_cred_t cred, |
| 4585 | struct vnode *vp, |
| 4586 | struct label *vlabel, |
| 4587 | struct attrlist *returnattrs, |
| 4588 | struct attrlist *searchattrs |
| 4589 | ); |
| 4590 | /** |
| 4591 | * @brief Access control check for select |
| 4592 | * @param cred Subject credential |
| 4593 | * @param vp Object vnode |
| 4594 | * @param label Policy label for vp |
| 4595 | * @param which The operation selected on: FREAD or FWRITE |
| 4596 | * |
| 4597 | * Determine whether the subject identified by the credential can select |
| 4598 | * the vnode. |
| 4599 | * |
| 4600 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4601 | * errno should be returned. |
| 4602 | */ |
| 4603 | typedef int mpo_vnode_check_select_t( |
| 4604 | kauth_cred_t cred, |
| 4605 | struct vnode *vp, |
| 4606 | struct label *label, |
| 4607 | int which |
| 4608 | ); |
| 4609 | /** |
| 4610 | * @brief Access control check for setting ACL |
| 4611 | * @param cred Subject credential |
| 4612 | * @param vp Object node |
| 4613 | * @param label Policy label for vp |
| 4614 | * @param acl ACL structure pointer |
| 4615 | * |
| 4616 | * Determine whether the subject identified by the credential can set an ACL |
| 4617 | * on the specified vnode. The ACL pointer will be NULL when removing an ACL. |
| 4618 | * |
| 4619 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4620 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4621 | * EPERM for lack of privilege. |
| 4622 | */ |
| 4623 | typedef int mpo_vnode_check_setacl_t( |
| 4624 | kauth_cred_t cred, |
| 4625 | struct vnode *vp, |
| 4626 | struct label *label, |
| 4627 | struct kauth_acl *acl |
| 4628 | ); |
| 4629 | /** |
| 4630 | * @brief Access control check for setting file attributes |
| 4631 | * @param cred Subject credential |
| 4632 | * @param vp Object vnode |
| 4633 | * @param vlabel Policy label for vp |
| 4634 | * @param alist List of attributes to set |
| 4635 | * |
| 4636 | * Determine whether the subject identified by the credential can set |
| 4637 | * various attributes of the specified vnode, or the filesystem or volume on |
| 4638 | * which that vnode resides. See <sys/attr.h> for definitions of the |
| 4639 | * attributes. |
| 4640 | * |
| 4641 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4642 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4643 | * EPERM for lack of privilege. Access control covers all attributes requested |
| 4644 | * with this call. |
| 4645 | */ |
| 4646 | typedef int mpo_vnode_check_setattrlist_t( |
| 4647 | kauth_cred_t cred, |
| 4648 | struct vnode *vp, |
| 4649 | struct label *vlabel, |
| 4650 | struct attrlist *alist |
| 4651 | ); |
| 4652 | /** |
| 4653 | * @brief Access control check for setting extended attribute |
| 4654 | * @param cred Subject credential |
| 4655 | * @param vp Object vnode |
| 4656 | * @param label Policy label for vp |
| 4657 | * @param name Extended attribute name |
| 4658 | * @param uio I/O structure pointer |
| 4659 | * |
| 4660 | * Determine whether the subject identified by the credential can set the |
| 4661 | * extended attribute of passed name and passed namespace on the passed |
| 4662 | * vnode. Policies implementing security labels backed into extended |
| 4663 | * attributes may want to provide additional protections for those |
| 4664 | * attributes. Additionally, policies should avoid making decisions based |
| 4665 | * on the data referenced from uio, as there is a potential race condition |
| 4666 | * between this check and the actual operation. The uio may also be NULL |
| 4667 | * if a delete operation is being performed. |
| 4668 | * |
| 4669 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4670 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4671 | * EPERM for lack of privilege. |
| 4672 | */ |
| 4673 | typedef int mpo_vnode_check_setextattr_t( |
| 4674 | kauth_cred_t cred, |
| 4675 | struct vnode *vp, |
| 4676 | struct label *label, |
| 4677 | const char *name, |
| 4678 | struct uio *uio |
| 4679 | ); |
| 4680 | /** |
| 4681 | * @brief Access control check for setting flags |
| 4682 | * @param cred Subject credential |
| 4683 | * @param vp Object vnode |
| 4684 | * @param label Policy label for vp |
| 4685 | * @param flags File flags; see chflags(2) |
| 4686 | * |
| 4687 | * Determine whether the subject identified by the credential can set |
| 4688 | * the passed flags on the passed vnode. |
| 4689 | * |
| 4690 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4691 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4692 | * EPERM for lack of privilege. |
| 4693 | */ |
| 4694 | typedef int mpo_vnode_check_setflags_t( |
| 4695 | kauth_cred_t cred, |
| 4696 | struct vnode *vp, |
| 4697 | struct label *label, |
| 4698 | u_long flags |
| 4699 | ); |
| 4700 | /** |
| 4701 | * @brief Access control check for setting mode |
| 4702 | * @param cred Subject credential |
| 4703 | * @param vp Object vnode |
| 4704 | * @param label Policy label for vp |
| 4705 | * @param mode File mode; see chmod(2) |
| 4706 | * |
| 4707 | * Determine whether the subject identified by the credential can set |
| 4708 | * the passed mode on the passed vnode. |
| 4709 | * |
| 4710 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4711 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4712 | * EPERM for lack of privilege. |
| 4713 | */ |
| 4714 | typedef int mpo_vnode_check_setmode_t( |
| 4715 | kauth_cred_t cred, |
| 4716 | struct vnode *vp, |
| 4717 | struct label *label, |
| 4718 | mode_t mode |
| 4719 | ); |
| 4720 | /** |
| 4721 | * @brief Access control check for setting uid and gid |
| 4722 | * @param cred Subject credential |
| 4723 | * @param vp Object vnode |
| 4724 | * @param label Policy label for vp |
| 4725 | * @param uid User ID |
| 4726 | * @param gid Group ID |
| 4727 | * |
| 4728 | * Determine whether the subject identified by the credential can set |
| 4729 | * the passed uid and passed gid as file uid and file gid on the passed |
| 4730 | * vnode. The IDs may be set to (-1) to request no update. |
| 4731 | * |
| 4732 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4733 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4734 | * EPERM for lack of privilege. |
| 4735 | */ |
| 4736 | typedef int mpo_vnode_check_setowner_t( |
| 4737 | kauth_cred_t cred, |
| 4738 | struct vnode *vp, |
| 4739 | struct label *label, |
| 4740 | uid_t uid, |
| 4741 | gid_t gid |
| 4742 | ); |
| 4743 | /** |
| 4744 | * @brief Access control check for setting timestamps |
| 4745 | * @param cred Subject credential |
| 4746 | * @param vp Object vnode |
| 4747 | * @param label Policy label for vp |
| 4748 | * @param atime Access time; see utimes(2) |
| 4749 | * @param mtime Modification time; see utimes(2) |
| 4750 | * |
| 4751 | * Determine whether the subject identified by the credential can set |
| 4752 | * the passed access timestamps on the passed vnode. |
| 4753 | * |
| 4754 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4755 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4756 | * EPERM for lack of privilege. |
| 4757 | */ |
| 4758 | typedef int mpo_vnode_check_setutimes_t( |
| 4759 | kauth_cred_t cred, |
| 4760 | struct vnode *vp, |
| 4761 | struct label *label, |
| 4762 | struct timespec atime, |
| 4763 | struct timespec mtime |
| 4764 | ); |
| 4765 | /** |
| 4766 | * @brief Access control check after determining the code directory hash |
| 4767 | * @param vp vnode vnode to combine into proc |
| 4768 | * @param label label associated with the vnode |
| 4769 | * @param cpu_type cpu type of the signature being checked |
| 4770 | * @param cs_blob the code signature to check |
| 4771 | * @param cs_flags update code signing flags if needed |
| 4772 | * @param signer_type output parameter for the code signature's signer type |
| 4773 | * @param flags operational flag to mpo_vnode_check_signature |
| 4774 | * @param platform platform of the signature being checked |
| 4775 | * @param fatal_failure_desc description of fatal failure |
| 4776 | * @param fatal_failure_desc_len failure description len, failure is fatal if non-0 |
| 4777 | * |
| 4778 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4779 | * errno should be returned. |
| 4780 | */ |
| 4781 | typedef int mpo_vnode_check_signature_t( |
| 4782 | struct vnode *vp, |
| 4783 | struct label *label, |
| 4784 | cpu_type_t cpu_type, |
| 4785 | struct cs_blob *cs_blob, |
| 4786 | unsigned int *cs_flags, |
| 4787 | unsigned int *signer_type, |
| 4788 | int flags, |
| 4789 | unsigned int platform, |
| 4790 | char **fatal_failure_desc, size_t *fatal_failure_desc_len |
| 4791 | ); |
| 4792 | |
| 4793 | /** |
| 4794 | * @brief Access control check for supplemental signature attachement |
| 4795 | * @param vp the vnode to which the signature will be attached |
| 4796 | * @param label label associated with the vnode |
| 4797 | * @param cs_blob the code signature to check |
| 4798 | * @param linked_vp vnode to which this new vp is related |
| 4799 | * @param linked_cs_blob the code signature of the linked vnode |
| 4800 | * @param signer_type output parameter for the signer type of the code signature being checked. |
| 4801 | * |
| 4802 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4803 | * errno should be returned. |
| 4804 | */ |
| 4805 | typedef int mpo_vnode_check_supplemental_signature_t( |
| 4806 | struct vnode *vp, |
| 4807 | struct label *label, |
| 4808 | struct cs_blob *cs_blob, |
| 4809 | struct vnode *linked_vp, |
| 4810 | struct cs_blob *linked_cs_blob, |
| 4811 | unsigned int *signer_type |
| 4812 | ); |
| 4813 | |
| 4814 | /** |
| 4815 | * @brief Access control check for stat |
| 4816 | * @param active_cred Subject credential |
| 4817 | * @param file_cred Credential associated with the struct fileproc |
| 4818 | * @param vp Object vnode |
| 4819 | * @param label Policy label for vp |
| 4820 | * |
| 4821 | * Determine whether the subject identified by the credential can stat |
| 4822 | * the passed vnode. See stat(2) for more information. The active_cred |
| 4823 | * hold the credentials of the subject performing the operation, and |
| 4824 | * file_cred holds the credentials of the subject that originally |
| 4825 | * opened the file. |
| 4826 | * |
| 4827 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4828 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4829 | * EPERM for lack of privilege. |
| 4830 | */ |
| 4831 | typedef int mpo_vnode_check_stat_t( |
| 4832 | struct ucred *active_cred, |
| 4833 | struct ucred *file_cred, /* NULLOK */ |
| 4834 | struct vnode *vp, |
| 4835 | struct label *label |
| 4836 | ); |
| 4837 | /** |
| 4838 | * @brief Access control check for vnode trigger resolution |
| 4839 | * @param cred Subject credential |
| 4840 | * @param dvp Object vnode |
| 4841 | * @param dlabel Policy label for dvp |
| 4842 | * @param cnp Component name that triggered resolution |
| 4843 | * |
| 4844 | * Determine whether the subject identified by the credential can trigger |
| 4845 | * resolution of the passed name (cnp) in the passed directory vnode |
| 4846 | * via an external trigger resolver. |
| 4847 | * |
| 4848 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4849 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4850 | * EPERM for lack of privilege. |
| 4851 | */ |
| 4852 | typedef int mpo_vnode_check_trigger_resolve_t( |
| 4853 | kauth_cred_t cred, |
| 4854 | struct vnode *dvp, |
| 4855 | struct label *dlabel, |
| 4856 | struct componentname *cnp |
| 4857 | ); |
| 4858 | /** |
| 4859 | * @brief Access control check for truncate/ftruncate |
| 4860 | * @param active_cred Subject credential |
| 4861 | * @param file_cred Credential associated with the struct fileproc |
| 4862 | * @param vp Object vnode |
| 4863 | * @param label Policy label for vp |
| 4864 | * |
| 4865 | * Determine whether the subject identified by the credential can |
| 4866 | * perform a truncate operation on the passed vnode. The active_cred hold |
| 4867 | * the credentials of the subject performing the operation, and |
| 4868 | * file_cred holds the credentials of the subject that originally |
| 4869 | * opened the file. |
| 4870 | * |
| 4871 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4872 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4873 | * EPERM for lack of privilege. |
| 4874 | */ |
| 4875 | typedef int mpo_vnode_check_truncate_t( |
| 4876 | kauth_cred_t active_cred, |
| 4877 | kauth_cred_t file_cred, /* NULLOK */ |
| 4878 | struct vnode *vp, |
| 4879 | struct label *label |
| 4880 | ); |
| 4881 | /** |
| 4882 | * @brief Access control check for binding UNIX domain socket |
| 4883 | * @param cred Subject credential |
| 4884 | * @param dvp Directory vnode |
| 4885 | * @param dlabel Policy label for dvp |
| 4886 | * @param cnp Component name for dvp |
| 4887 | * @param vap vnode attributes for vap |
| 4888 | * |
| 4889 | * Determine whether the subject identified by the credential can perform a |
| 4890 | * bind operation on a UNIX domain socket with the passed parent directory, |
| 4891 | * passed name information, and passed attribute information. |
| 4892 | * |
| 4893 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4894 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4895 | * EPERM for lack of privilege. |
| 4896 | */ |
| 4897 | typedef int mpo_vnode_check_uipc_bind_t( |
| 4898 | kauth_cred_t cred, |
| 4899 | struct vnode *dvp, |
| 4900 | struct label *dlabel, |
| 4901 | struct componentname *cnp, |
| 4902 | struct vnode_attr *vap |
| 4903 | ); |
| 4904 | /** |
| 4905 | * @brief Access control check for connecting UNIX domain socket |
| 4906 | * @param cred Subject credential |
| 4907 | * @param vp Object vnode |
| 4908 | * @param label Policy label associated with vp |
| 4909 | * @param so Socket |
| 4910 | * |
| 4911 | * Determine whether the subject identified by the credential can perform a |
| 4912 | * connect operation on the passed UNIX domain socket vnode. |
| 4913 | * |
| 4914 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4915 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4916 | * EPERM for lack of privilege. |
| 4917 | */ |
| 4918 | typedef int mpo_vnode_check_uipc_connect_t( |
| 4919 | kauth_cred_t cred, |
| 4920 | struct vnode *vp, |
| 4921 | struct label *label, |
| 4922 | socket_t so |
| 4923 | ); |
| 4924 | /** |
| 4925 | * @brief Access control check for deleting vnode |
| 4926 | * @param cred Subject credential |
| 4927 | * @param dvp Parent directory vnode |
| 4928 | * @param dlabel Policy label for dvp |
| 4929 | * @param vp Object vnode to delete |
| 4930 | * @param label Policy label for vp |
| 4931 | * @param cnp Component name for vp |
| 4932 | * @see mpo_check_rename_to_t |
| 4933 | * |
| 4934 | * Determine whether the subject identified by the credential can delete |
| 4935 | * a vnode from the passed parent directory and passed name information. |
| 4936 | * This call may be made in a number of situations, including as a |
| 4937 | * results of calls to unlink(2) and rmdir(2). Policies implementing |
| 4938 | * this entry point should also implement mpo_check_rename_to to |
| 4939 | * authorize deletion of objects as a result of being the target of a rename. |
| 4940 | * |
| 4941 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4942 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4943 | * EPERM for lack of privilege. |
| 4944 | */ |
| 4945 | typedef int mpo_vnode_check_unlink_t( |
| 4946 | kauth_cred_t cred, |
| 4947 | struct vnode *dvp, |
| 4948 | struct label *dlabel, |
| 4949 | struct vnode *vp, |
| 4950 | struct label *label, |
| 4951 | struct componentname *cnp |
| 4952 | ); |
| 4953 | /** |
| 4954 | * @brief Access control check for write |
| 4955 | * @param active_cred Subject credential |
| 4956 | * @param file_cred Credential associated with the struct fileproc |
| 4957 | * @param vp Object vnode |
| 4958 | * @param label Policy label for vp |
| 4959 | * |
| 4960 | * Determine whether the subject identified by the credential can |
| 4961 | * perform a write operation on the passed vnode. The active_cred hold |
| 4962 | * the credentials of the subject performing the operation, and |
| 4963 | * file_cred holds the credentials of the subject that originally |
| 4964 | * opened the file. |
| 4965 | * |
| 4966 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4967 | * errno should be returned. Suggested failure: EACCES for label mismatch or |
| 4968 | * EPERM for lack of privilege. |
| 4969 | */ |
| 4970 | typedef int mpo_vnode_check_write_t( |
| 4971 | kauth_cred_t active_cred, |
| 4972 | kauth_cred_t file_cred, /* NULLOK */ |
| 4973 | struct vnode *vp, |
| 4974 | struct label *label |
| 4975 | ); |
| 4976 | /** |
| 4977 | * @brief Access control check for copyfile |
| 4978 | * @param cred Subject credential |
| 4979 | * @param dvp Vnode of directory to create the copy in |
| 4980 | * @param dlabel Policy label associated with dvp |
| 4981 | * @param tvp Vnode of the file at the target path that will be unlinked to |
| 4982 | * make room for the copy being created, if file exists |
| 4983 | * @param tlabel Policy label associated with tvp |
| 4984 | * @param fvp Vnode of the file to copy from |
| 4985 | * @param flabel Policy label associated with fvp |
| 4986 | * @param cnp Component name for the copy being created |
| 4987 | * @param mode Corresponds to mode argument to the copyfile syscall |
| 4988 | * @param flags Corresponds to flags argument to the copyfile syscall |
| 4989 | * |
| 4990 | * Determine whether the subject identified by the credential should be |
| 4991 | * allowed to create a copy of the vnode fvp with the name specified by cnp. |
| 4992 | * |
| 4993 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 4994 | * errno should be returned. |
| 4995 | */ |
| 4996 | typedef int mpo_vnode_check_copyfile_t( |
| 4997 | kauth_cred_t cred, |
| 4998 | struct vnode *dvp, |
| 4999 | struct label *dlabel, |
| 5000 | struct vnode *tvp, /* NULLOK */ |
| 5001 | struct label *tlabel, /* NULLOK */ |
| 5002 | struct vnode *fvp, |
| 5003 | struct label *flabel, |
| 5004 | struct componentname *cnp, |
| 5005 | mode_t mode, |
| 5006 | int flags |
| 5007 | ); |
| 5008 | /** |
| 5009 | * @brief Associate a vnode with a devfs entry |
| 5010 | * @param mp Devfs mount point |
| 5011 | * @param mntlabel Devfs mount point label |
| 5012 | * @param de Devfs directory entry |
| 5013 | * @param delabel Label associated with de |
| 5014 | * @param vp vnode associated with de |
| 5015 | * @param vlabel Label associated with vp |
| 5016 | * |
| 5017 | * Fill in the label (vlabel) for a newly created devfs vnode. The |
| 5018 | * label is typically derived from the label on the devfs directory |
| 5019 | * entry or the label on the filesystem, supplied as parameters. |
| 5020 | */ |
| 5021 | typedef void mpo_vnode_label_associate_devfs_t( |
| 5022 | struct mount *mp, |
| 5023 | struct label *mntlabel, |
| 5024 | struct devnode *de, |
| 5025 | struct label *delabel, |
| 5026 | struct vnode *vp, |
| 5027 | struct label *vlabel |
| 5028 | ); |
| 5029 | /** |
| 5030 | * @brief Associate a label with a vnode |
| 5031 | * @param mp File system mount point |
| 5032 | * @param mntlabel File system mount point label |
| 5033 | * @param vp Vnode to label |
| 5034 | * @param vlabel Label associated with vp |
| 5035 | * |
| 5036 | * Attempt to retrieve label information for the vnode, vp, from the |
| 5037 | * file system extended attribute store. The label should be stored in |
| 5038 | * the supplied vlabel parameter. If a policy cannot retrieve an |
| 5039 | * extended attribute, sometimes it is acceptible to fallback to using |
| 5040 | * the mntlabel. |
| 5041 | * |
| 5042 | * If the policy requires vnodes to have a valid label elsewhere it |
| 5043 | * MUST NOT return other than temporary errors, and must always provide |
| 5044 | * a valid label of some sort. Returning an error will cause vnode |
| 5045 | * labeling to be retried at a later access. Failure to handle policy |
| 5046 | * centric errors internally (corrupt labels etc.) will result in |
| 5047 | * inaccessible files. |
| 5048 | * |
| 5049 | * @return In the event of an error, an appropriate value for errno |
| 5050 | * should be returned, otherwise return 0 upon success. |
| 5051 | */ |
| 5052 | typedef int mpo_vnode_label_associate_extattr_t( |
| 5053 | struct mount *mp, |
| 5054 | struct label *mntlabel, |
| 5055 | struct vnode *vp, |
| 5056 | struct label *vlabel |
| 5057 | ); |
| 5058 | /** |
| 5059 | * @brief Associate a file label with a vnode |
| 5060 | * @param cred User credential |
| 5061 | * @param mp Fdesc mount point |
| 5062 | * @param mntlabel Fdesc mount point label |
| 5063 | * @param fg Fileglob structure |
| 5064 | * @param label Policy label for fg |
| 5065 | * @param vp Vnode to label |
| 5066 | * @param vlabel Label associated with vp |
| 5067 | * |
| 5068 | * Associate label information for the vnode, vp, with the label of |
| 5069 | * the open file descriptor described by fg. |
| 5070 | * The label should be stored in the supplied vlabel parameter. |
| 5071 | */ |
| 5072 | typedef void mpo_vnode_label_associate_file_t( |
| 5073 | struct ucred *cred, |
| 5074 | struct mount *mp, |
| 5075 | struct label *mntlabel, |
| 5076 | struct fileglob *fg, |
| 5077 | struct label *label, |
| 5078 | struct vnode *vp, |
| 5079 | struct label *vlabel |
| 5080 | ); |
| 5081 | /** |
| 5082 | * @brief Associate a pipe label with a vnode |
| 5083 | * @param cred User credential for the process that opened the pipe |
| 5084 | * @param cpipe Pipe structure |
| 5085 | * @param pipelabel Label associated with pipe |
| 5086 | * @param vp Vnode to label |
| 5087 | * @param vlabel Label associated with vp |
| 5088 | * |
| 5089 | * Associate label information for the vnode, vp, with the label of |
| 5090 | * the pipe described by the pipe structure cpipe. |
| 5091 | * The label should be stored in the supplied vlabel parameter. |
| 5092 | */ |
| 5093 | typedef void mpo_vnode_label_associate_pipe_t( |
| 5094 | struct ucred *cred, |
| 5095 | struct pipe *cpipe, |
| 5096 | struct label *pipelabel, |
| 5097 | struct vnode *vp, |
| 5098 | struct label *vlabel |
| 5099 | ); |
| 5100 | /** |
| 5101 | * @brief Associate a POSIX semaphore label with a vnode |
| 5102 | * @param cred User credential for the process that create psem |
| 5103 | * @param psem POSIX semaphore structure |
| 5104 | * @param psemlabel Label associated with psem |
| 5105 | * @param vp Vnode to label |
| 5106 | * @param vlabel Label associated with vp |
| 5107 | * |
| 5108 | * Associate label information for the vnode, vp, with the label of |
| 5109 | * the POSIX semaphore described by psem. |
| 5110 | * The label should be stored in the supplied vlabel parameter. |
| 5111 | */ |
| 5112 | typedef void mpo_vnode_label_associate_posixsem_t( |
| 5113 | struct ucred *cred, |
| 5114 | struct pseminfo *psem, |
| 5115 | struct label *psemlabel, |
| 5116 | struct vnode *vp, |
| 5117 | struct label *vlabel |
| 5118 | ); |
| 5119 | /** |
| 5120 | * @brief Associate a POSIX shared memory label with a vnode |
| 5121 | * @param cred User credential for the process that created pshm |
| 5122 | * @param pshm POSIX shared memory structure |
| 5123 | * @param pshmlabel Label associated with pshm |
| 5124 | * @param vp Vnode to label |
| 5125 | * @param vlabel Label associated with vp |
| 5126 | * |
| 5127 | * Associate label information for the vnode, vp, with the label of |
| 5128 | * the POSIX shared memory region described by pshm. |
| 5129 | * The label should be stored in the supplied vlabel parameter. |
| 5130 | */ |
| 5131 | typedef void mpo_vnode_label_associate_posixshm_t( |
| 5132 | struct ucred *cred, |
| 5133 | struct pshminfo *pshm, |
| 5134 | struct label *pshmlabel, |
| 5135 | struct vnode *vp, |
| 5136 | struct label *vlabel |
| 5137 | ); |
| 5138 | /** |
| 5139 | * @brief Associate a label with a vnode |
| 5140 | * @param mp File system mount point |
| 5141 | * @param mntlabel File system mount point label |
| 5142 | * @param vp Vnode to label |
| 5143 | * @param vlabel Label associated with vp |
| 5144 | * |
| 5145 | * On non-multilabel file systems, set the label for a vnode. The |
| 5146 | * label will most likely be based on the file system label. |
| 5147 | */ |
| 5148 | typedef void mpo_vnode_label_associate_singlelabel_t( |
| 5149 | struct mount *mp, |
| 5150 | struct label *mntlabel, |
| 5151 | struct vnode *vp, |
| 5152 | struct label *vlabel |
| 5153 | ); |
| 5154 | /** |
| 5155 | * @brief Associate a socket label with a vnode |
| 5156 | * @param cred User credential for the process that opened the socket |
| 5157 | * @param so Socket structure |
| 5158 | * @param solabel Label associated with so |
| 5159 | * @param vp Vnode to label |
| 5160 | * @param vlabel Label associated with vp |
| 5161 | * |
| 5162 | * Associate label information for the vnode, vp, with the label of |
| 5163 | * the open socket described by the socket structure so. |
| 5164 | * The label should be stored in the supplied vlabel parameter. |
| 5165 | */ |
| 5166 | typedef void mpo_vnode_label_associate_socket_t( |
| 5167 | kauth_cred_t cred, |
| 5168 | socket_t so, |
| 5169 | struct label *solabel, |
| 5170 | struct vnode *vp, |
| 5171 | struct label *vlabel |
| 5172 | ); |
| 5173 | /** |
| 5174 | * @brief Copy a vnode label |
| 5175 | * @param src Source vnode label |
| 5176 | * @param dest Destination vnode label |
| 5177 | * |
| 5178 | * Copy the vnode label information from src to dest. On Darwin, this |
| 5179 | * is currently only necessary when executing interpreted scripts, but |
| 5180 | * will later be used if vnode label externalization cannot be an |
| 5181 | * atomic operation. |
| 5182 | */ |
| 5183 | typedef void mpo_vnode_label_copy_t( |
| 5184 | struct label *src, |
| 5185 | struct label *dest |
| 5186 | ); |
| 5187 | /** |
| 5188 | * @brief Destroy vnode label |
| 5189 | * @param label The label to be destroyed |
| 5190 | * |
| 5191 | * Destroy a vnode label. Since the object is going out of scope, |
| 5192 | * policy modules should free any internal storage associated with the |
| 5193 | * label so that it may be destroyed. |
| 5194 | */ |
| 5195 | typedef void mpo_vnode_label_destroy_t( |
| 5196 | struct label *label |
| 5197 | ); |
| 5198 | /** |
| 5199 | * @brief Externalize a vnode label for auditing |
| 5200 | * @param label Label to be externalized |
| 5201 | * @param element_name Name of the label namespace for which labels should be |
| 5202 | * externalized |
| 5203 | * @param sb String buffer to be filled with a text representation of the label |
| 5204 | * |
| 5205 | * Produce an external representation of the label on a vnode suitable for |
| 5206 | * inclusion in an audit record. An externalized label consists of a text |
| 5207 | * representation of the label contents that will be added to the audit record |
| 5208 | * as part of a text token. Policy-agnostic user space tools will display |
| 5209 | * this externalized version. |
| 5210 | * |
| 5211 | * @return 0 on success, return non-zero if an error occurs while |
| 5212 | * externalizing the label data. |
| 5213 | * |
| 5214 | */ |
| 5215 | typedef int mpo_vnode_label_externalize_audit_t( |
| 5216 | struct label *label, |
| 5217 | char *element_name, |
| 5218 | struct sbuf *sb |
| 5219 | ); |
| 5220 | /** |
| 5221 | * @brief Externalize a vnode label |
| 5222 | * @param label Label to be externalized |
| 5223 | * @param element_name Name of the label namespace for which labels should be |
| 5224 | * externalized |
| 5225 | * @param sb String buffer to be filled with a text representation of the label |
| 5226 | * |
| 5227 | * Produce an external representation of the label on a vnode. An |
| 5228 | * externalized label consists of a text representation of the label |
| 5229 | * contents that can be used with user applications. Policy-agnostic |
| 5230 | * user space tools will display this externalized version. |
| 5231 | * |
| 5232 | * @return 0 on success, return non-zero if an error occurs while |
| 5233 | * externalizing the label data. |
| 5234 | * |
| 5235 | */ |
| 5236 | typedef int mpo_vnode_label_externalize_t( |
| 5237 | struct label *label, |
| 5238 | char *element_name, |
| 5239 | struct sbuf *sb |
| 5240 | ); |
| 5241 | /** |
| 5242 | * @brief Initialize vnode label |
| 5243 | * @param label New label to initialize |
| 5244 | * |
| 5245 | * Initialize label storage for use with a newly instantiated vnode, or |
| 5246 | * for temporary storage associated with the copying in or out of a |
| 5247 | * vnode label. While it is necessary to allocate space for a |
| 5248 | * kernel-resident vnode label, it is not yet necessary to link this vnode |
| 5249 | * with persistent label storage facilities, such as extended attributes. |
| 5250 | * Sleeping is permitted. |
| 5251 | */ |
| 5252 | typedef void mpo_vnode_label_init_t( |
| 5253 | struct label *label |
| 5254 | ); |
| 5255 | /** |
| 5256 | * @brief Internalize a vnode label |
| 5257 | * @param label Label to be internalized |
| 5258 | * @param element_name Name of the label namespace for which the label should |
| 5259 | * be internalized |
| 5260 | * @param element_data Text data to be internalized |
| 5261 | * |
| 5262 | * Produce a vnode label from an external representation. An |
| 5263 | * externalized label consists of a text representation of the label |
| 5264 | * contents that can be used with user applications. Policy-agnostic |
| 5265 | * user space tools will forward text version to the kernel for |
| 5266 | * processing by individual policy modules. |
| 5267 | * |
| 5268 | * The policy's internalize entry points will be called only if the |
| 5269 | * policy has registered interest in the label namespace. |
| 5270 | * |
| 5271 | * @return 0 on success, Otherwise, return non-zero if an error occurs |
| 5272 | * while internalizing the label data. |
| 5273 | */ |
| 5274 | typedef int mpo_vnode_label_internalize_t( |
| 5275 | struct label *label, |
| 5276 | char *element_name, |
| 5277 | char *element_data |
| 5278 | ); |
| 5279 | /** |
| 5280 | * @brief Clean up a vnode label |
| 5281 | * @param label The label to be cleaned or purged |
| 5282 | * |
| 5283 | * Clean up a vnode label. Darwin (Tiger, 8.x) allocates vnodes on demand, but |
| 5284 | * typically never frees them. Before vnodes are placed back on free lists for |
| 5285 | * re-use, policies can cleanup or overwrite any information present in the label, |
| 5286 | * or free any internal resources used for the label. |
| 5287 | */ |
| 5288 | typedef void mpo_vnode_label_recycle_t( |
| 5289 | struct label *label |
| 5290 | ); |
| 5291 | /** |
| 5292 | * @brief Write a label to a extended attribute |
| 5293 | * @param cred Subject credential |
| 5294 | * @param vp The vnode for which the label is being stored |
| 5295 | * @param vlabel Label associated with vp |
| 5296 | * @param intlabel The new label to store |
| 5297 | * |
| 5298 | * Store a new label in the extended attribute corresponding to the |
| 5299 | * supplied vnode. The policy has already authorized the operation; |
| 5300 | * this call must be implemented in order to perform the actual |
| 5301 | * operation. |
| 5302 | * |
| 5303 | * @return In the event of an error, an appropriate value for errno |
| 5304 | * should be returned, otherwise return 0 upon success. |
| 5305 | * |
| 5306 | * @warning XXX After examining the extended attribute implementation on |
| 5307 | * Apple's future release, this entry point may be changed. |
| 5308 | */ |
| 5309 | typedef int mpo_vnode_label_store_t( |
| 5310 | kauth_cred_t cred, |
| 5311 | struct vnode *vp, |
| 5312 | struct label *vlabel, |
| 5313 | struct label *intlabel |
| 5314 | ); |
| 5315 | /** |
| 5316 | * @brief Update vnode label from extended attributes |
| 5317 | * @param mp File system mount point |
| 5318 | * @param mntlabel Mount point label |
| 5319 | * @param vp Vnode to label |
| 5320 | * @param vlabel Label associated with vp |
| 5321 | * @param name Name of the xattr |
| 5322 | * @see mpo_vnode_check_setextattr_t |
| 5323 | * |
| 5324 | * When an extended attribute is updated via the Vendor attribute management |
| 5325 | * functions, the MAC vnode label might also require an update. |
| 5326 | * Policies should first determine if 'name' matches their xattr label |
| 5327 | * name. If it does, the kernel is has either replaced or removed the |
| 5328 | * named extended attribute that was previously associated with the |
| 5329 | * vnode. Normally labels should only be modified via MAC Framework label |
| 5330 | * management calls, but sometimes the user space components will directly |
| 5331 | * modify extended attributes. For example, 'cp', 'tar', etc. manage |
| 5332 | * extended attributes in userspace, not the kernel. |
| 5333 | * |
| 5334 | * This entry point is called after the label update has occurred, so |
| 5335 | * it cannot return a failure. However, the operation is preceded by |
| 5336 | * the mpo_vnode_check_setextattr() access control check. |
| 5337 | * |
| 5338 | * If the vnode label needs to be updated the policy should return |
| 5339 | * a non-zero value. The vnode label will be marked for re-association |
| 5340 | * by the framework. |
| 5341 | */ |
| 5342 | typedef int mpo_vnode_label_update_extattr_t( |
| 5343 | struct mount *mp, |
| 5344 | struct label *mntlabel, |
| 5345 | struct vnode *vp, |
| 5346 | struct label *vlabel, |
| 5347 | const char *name |
| 5348 | ); |
| 5349 | /** |
| 5350 | * @brief Update a vnode label |
| 5351 | * @param cred Subject credential |
| 5352 | * @param vp The vnode to relabel |
| 5353 | * @param vnodelabel Existing vnode label |
| 5354 | * @param label New label to replace existing label |
| 5355 | * @see mpo_vnode_check_label_update_t |
| 5356 | * |
| 5357 | * The subject identified by the credential has previously requested |
| 5358 | * and was authorized to relabel the vnode; this entry point allows |
| 5359 | * policies to perform the actual relabel operation. Policies should |
| 5360 | * update vnodelabel using the label stored in the label parameter. |
| 5361 | */ |
| 5362 | typedef void mpo_vnode_label_update_t( |
| 5363 | kauth_cred_t cred, |
| 5364 | struct vnode *vp, |
| 5365 | struct label *vnodelabel, |
| 5366 | struct label *label |
| 5367 | ); |
| 5368 | /** |
| 5369 | * @brief Find deatched signatures for a shared library |
| 5370 | * @param p file trying to find the signature |
| 5371 | * @param vp The vnode to relabel |
| 5372 | * @param offset offset in the Mach-O that the signature is requested for (for fat binaries) |
| 5373 | * @param label Existing vnode label |
| 5374 | * |
| 5375 | */ |
| 5376 | typedef int mpo_vnode_find_sigs_t( |
| 5377 | struct proc *p, |
| 5378 | struct vnode *vp, |
| 5379 | off_t offset, |
| 5380 | struct label *label |
| 5381 | ); |
| 5382 | /** |
| 5383 | * @brief Create a new vnode, backed by extended attributes |
| 5384 | * @param cred User credential for the creating process |
| 5385 | * @param mp File system mount point |
| 5386 | * @param mntlabel File system mount point label |
| 5387 | * @param dvp Parent directory vnode |
| 5388 | * @param dlabel Parent directory vnode label |
| 5389 | * @param vp Newly created vnode |
| 5390 | * @param vlabel Label to associate with the new vnode |
| 5391 | * @param cnp Component name for vp |
| 5392 | * |
| 5393 | * Write out the label for the newly created vnode, most likely storing |
| 5394 | * the results in a file system extended attribute. Most policies will |
| 5395 | * derive the new vnode label using information from a combination |
| 5396 | * of the subject (user) credential, the file system label, the parent |
| 5397 | * directory label, and potentially the path name component. |
| 5398 | * |
| 5399 | * @return If the operation succeeds, store the new label in vlabel and |
| 5400 | * return 0. Otherwise, return an appropriate errno value. |
| 5401 | */ |
| 5402 | typedef int mpo_vnode_notify_create_t( |
| 5403 | kauth_cred_t cred, |
| 5404 | struct mount *mp, |
| 5405 | struct label *mntlabel, |
| 5406 | struct vnode *dvp, |
| 5407 | struct label *dlabel, |
| 5408 | struct vnode *vp, |
| 5409 | struct label *vlabel, |
| 5410 | struct componentname *cnp |
| 5411 | ); |
| 5412 | |
| 5413 | /** |
| 5414 | * @brief Inform MAC policies that a vnode has been opened |
| 5415 | * @param cred User credential for the creating process |
| 5416 | * @param vp vnode opened |
| 5417 | * @param label Policy label for the vp |
| 5418 | * @param acc_mode open(2) access mode used |
| 5419 | * |
| 5420 | * Inform Mac policies that a vnode have been successfully opened |
| 5421 | * (passing all MAC polices and DAC). |
| 5422 | */ |
| 5423 | typedef void mpo_vnode_notify_open_t( |
| 5424 | kauth_cred_t cred, |
| 5425 | struct vnode *vp, |
| 5426 | struct label *label, |
| 5427 | int acc_mode |
| 5428 | ); |
| 5429 | |
| 5430 | /** |
| 5431 | * @brief Inform MAC policies that a vnode has been renamed |
| 5432 | * @param cred User credential for the renaming process |
| 5433 | * @param vp Vnode that's being renamed |
| 5434 | * @param label Policy label for vp |
| 5435 | * @param dvp Parent directory for the destination |
| 5436 | * @param dlabel Policy label for dvp |
| 5437 | * @param cnp Component name for the destination |
| 5438 | * |
| 5439 | * Inform MAC policies that a vnode has been renamed. |
| 5440 | */ |
| 5441 | typedef void mpo_vnode_notify_rename_t( |
| 5442 | kauth_cred_t cred, |
| 5443 | struct vnode *vp, |
| 5444 | struct label *label, |
| 5445 | struct vnode *dvp, |
| 5446 | struct label *dlabel, |
| 5447 | struct componentname *cnp |
| 5448 | ); |
| 5449 | |
| 5450 | /** |
| 5451 | * @brief Inform MAC policies that two vnodes were atomically swapped. |
| 5452 | * @param cred User credential for the renaming process |
| 5453 | * @param v1 vnode 1 to swap |
| 5454 | * @param vl1 Policy label for v1 |
| 5455 | * @param v2 vnode 2 to swap |
| 5456 | * @param vl2 Policy label for v2 |
| 5457 | * |
| 5458 | * Inform MAC policies that two vnodes were atomically swapped. |
| 5459 | * NOTE: If a policy implements this notify hook, then this hook will be |
| 5460 | * called instead of two calls to the vnode_notify_rename hook (one for each |
| 5461 | * member of the swap). |
| 5462 | */ |
| 5463 | typedef void mpo_vnode_notify_swap_t( |
| 5464 | kauth_cred_t cred, |
| 5465 | struct vnode *v1, |
| 5466 | struct label *vl1, |
| 5467 | struct vnode *v2, |
| 5468 | struct label *vl2 |
| 5469 | ); |
| 5470 | |
| 5471 | /** |
| 5472 | * @brief Inform MAC policies that a vnode has been linked |
| 5473 | * @param cred User credential for the renaming process |
| 5474 | * @param dvp Parent directory for the destination |
| 5475 | * @param dlabel Policy label for dvp |
| 5476 | * @param vp Vnode that's being linked |
| 5477 | * @param vlabel Policy label for vp |
| 5478 | * @param cnp Component name for the destination |
| 5479 | * |
| 5480 | * Inform MAC policies that a vnode has been linked. |
| 5481 | */ |
| 5482 | typedef void mpo_vnode_notify_link_t( |
| 5483 | kauth_cred_t cred, |
| 5484 | struct vnode *dvp, |
| 5485 | struct label *dlabel, |
| 5486 | struct vnode *vp, |
| 5487 | struct label *vlabel, |
| 5488 | struct componentname *cnp |
| 5489 | ); |
| 5490 | |
| 5491 | /** |
| 5492 | * @brief Inform MAC policies that an extended attribute has been removed from a vnode |
| 5493 | * @param cred Subject credential |
| 5494 | * @param vp Object node |
| 5495 | * @param label Policy label for vp |
| 5496 | * @param name Extended attribute name |
| 5497 | * |
| 5498 | * Inform MAC policies that an extended attribute has been removed from a vnode. |
| 5499 | */ |
| 5500 | typedef void mpo_vnode_notify_deleteextattr_t( |
| 5501 | kauth_cred_t cred, |
| 5502 | struct vnode *vp, |
| 5503 | struct label *label, |
| 5504 | const char *name |
| 5505 | ); |
| 5506 | |
| 5507 | |
| 5508 | /** |
| 5509 | * @brief Inform MAC policies that an ACL has been set on a vnode |
| 5510 | * @param cred Subject credential |
| 5511 | * @param vp Object node |
| 5512 | * @param label Policy label for vp |
| 5513 | * @param acl ACL structure pointer |
| 5514 | * |
| 5515 | * Inform MAC policies that an ACL has been set on a vnode. |
| 5516 | */ |
| 5517 | typedef void mpo_vnode_notify_setacl_t( |
| 5518 | kauth_cred_t cred, |
| 5519 | struct vnode *vp, |
| 5520 | struct label *label, |
| 5521 | struct kauth_acl *acl |
| 5522 | ); |
| 5523 | |
| 5524 | /** |
| 5525 | * @brief Inform MAC policies that an attributes have been set on a vnode |
| 5526 | * @param cred Subject credential |
| 5527 | * @param vp Object vnode |
| 5528 | * @param label Policy label for vp |
| 5529 | * @param alist List of attributes to set |
| 5530 | * |
| 5531 | * Inform MAC policies that an attributes have been set on a vnode. |
| 5532 | */ |
| 5533 | typedef void mpo_vnode_notify_setattrlist_t( |
| 5534 | kauth_cred_t cred, |
| 5535 | struct vnode *vp, |
| 5536 | struct label *label, |
| 5537 | struct attrlist *alist |
| 5538 | ); |
| 5539 | |
| 5540 | /** |
| 5541 | * @brief Inform MAC policies that an extended attribute has been set on a vnode |
| 5542 | * @param cred Subject credential |
| 5543 | * @param vp Object vnode |
| 5544 | * @param label Policy label for vp |
| 5545 | * @param name Extended attribute name |
| 5546 | * @param uio I/O structure pointer |
| 5547 | * |
| 5548 | * Inform MAC policies that an extended attribute has been set on a vnode. |
| 5549 | */ |
| 5550 | typedef void mpo_vnode_notify_setextattr_t( |
| 5551 | kauth_cred_t cred, |
| 5552 | struct vnode *vp, |
| 5553 | struct label *label, |
| 5554 | const char *name, |
| 5555 | struct uio *uio |
| 5556 | ); |
| 5557 | |
| 5558 | /** |
| 5559 | * @brief Inform MAC policies that flags have been set on a vnode |
| 5560 | * @param cred Subject credential |
| 5561 | * @param vp Object vnode |
| 5562 | * @param label Policy label for vp |
| 5563 | * @param flags File flags; see chflags(2) |
| 5564 | * |
| 5565 | * Inform MAC policies that flags have been set on a vnode. |
| 5566 | */ |
| 5567 | typedef void mpo_vnode_notify_setflags_t( |
| 5568 | kauth_cred_t cred, |
| 5569 | struct vnode *vp, |
| 5570 | struct label *label, |
| 5571 | u_long flags |
| 5572 | ); |
| 5573 | |
| 5574 | /** |
| 5575 | * @brief Inform MAC policies that a new mode has been set on a vnode |
| 5576 | * @param cred Subject credential |
| 5577 | * @param vp Object vnode |
| 5578 | * @param label Policy label for vp |
| 5579 | * @param mode File mode; see chmod(2) |
| 5580 | * |
| 5581 | * Inform MAC policies that a new mode has been set on a vnode. |
| 5582 | */ |
| 5583 | typedef void mpo_vnode_notify_setmode_t( |
| 5584 | kauth_cred_t cred, |
| 5585 | struct vnode *vp, |
| 5586 | struct label *label, |
| 5587 | mode_t mode |
| 5588 | ); |
| 5589 | |
| 5590 | /** |
| 5591 | * @brief Inform MAC policies that new uid/gid have been set on a vnode |
| 5592 | * @param cred Subject credential |
| 5593 | * @param vp Object vnode |
| 5594 | * @param label Policy label for vp |
| 5595 | * @param uid User ID |
| 5596 | * @param gid Group ID |
| 5597 | * |
| 5598 | * Inform MAC policies that new uid/gid have been set on a vnode. |
| 5599 | */ |
| 5600 | typedef void mpo_vnode_notify_setowner_t( |
| 5601 | kauth_cred_t cred, |
| 5602 | struct vnode *vp, |
| 5603 | struct label *label, |
| 5604 | uid_t uid, |
| 5605 | gid_t gid |
| 5606 | ); |
| 5607 | |
| 5608 | /** |
| 5609 | * @brief Inform MAC policies that new timestamps have been set on a vnode |
| 5610 | * @param cred Subject credential |
| 5611 | * @param vp Object vnode |
| 5612 | * @param label Policy label for vp |
| 5613 | * @param atime Access time; see utimes(2) |
| 5614 | * @param mtime Modification time; see utimes(2) |
| 5615 | * |
| 5616 | * Inform MAC policies that new timestamps have been set on a vnode. |
| 5617 | */ |
| 5618 | typedef void mpo_vnode_notify_setutimes_t( |
| 5619 | kauth_cred_t cred, |
| 5620 | struct vnode *vp, |
| 5621 | struct label *label, |
| 5622 | struct timespec atime, |
| 5623 | struct timespec mtime |
| 5624 | ); |
| 5625 | |
| 5626 | /** |
| 5627 | * @brief Inform MAC policies that a vnode has been truncated |
| 5628 | * @param cred Subject credential |
| 5629 | * @param file_cred Credential associated with the struct fileproc |
| 5630 | * @param vp Object vnode |
| 5631 | * @param label Policy label for vp |
| 5632 | * |
| 5633 | * Inform MAC policies that a vnode has been truncated. |
| 5634 | */ |
| 5635 | typedef void mpo_vnode_notify_truncate_t( |
| 5636 | kauth_cred_t cred, |
| 5637 | kauth_cred_t file_cred, |
| 5638 | struct vnode *vp, |
| 5639 | struct label *label |
| 5640 | ); |
| 5641 | |
| 5642 | |
| 5643 | /** |
| 5644 | * @brief Inform MAC policies that a pty slave has been granted |
| 5645 | * @param p Responsible process |
| 5646 | * @param tp tty data structure |
| 5647 | * @param dev Major and minor numbers of device |
| 5648 | * @param label Policy label for tp |
| 5649 | * |
| 5650 | * Inform MAC policies that a pty slave has been granted. |
| 5651 | */ |
| 5652 | typedef void mpo_pty_notify_grant_t( |
| 5653 | proc_t p, |
| 5654 | struct tty *tp, |
| 5655 | dev_t dev, |
| 5656 | struct label *label |
| 5657 | ); |
| 5658 | |
| 5659 | /** |
| 5660 | * @brief Inform MAC policies that a pty master has been closed |
| 5661 | * @param p Responsible process |
| 5662 | * @param tp tty data structure |
| 5663 | * @param dev Major and minor numbers of device |
| 5664 | * @param label Policy label for tp |
| 5665 | * |
| 5666 | * Inform MAC policies that a pty master has been closed. |
| 5667 | */ |
| 5668 | typedef void mpo_pty_notify_close_t( |
| 5669 | proc_t p, |
| 5670 | struct tty *tp, |
| 5671 | dev_t dev, |
| 5672 | struct label *label |
| 5673 | ); |
| 5674 | |
| 5675 | /** |
| 5676 | * @brief Access control check for kext loading |
| 5677 | * @param cred Subject credential |
| 5678 | * @param identifier Kext identifier |
| 5679 | * |
| 5680 | * Determine whether the subject identified by the credential can load the |
| 5681 | * specified kext. |
| 5682 | * |
| 5683 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 5684 | * errno should be returned. Suggested failure: EPERM for lack of privilege. |
| 5685 | */ |
| 5686 | typedef int mpo_kext_check_load_t( |
| 5687 | kauth_cred_t cred, |
| 5688 | const char *identifier |
| 5689 | ); |
| 5690 | |
| 5691 | /** |
| 5692 | * @brief Access control check for kext unloading |
| 5693 | * @param cred Subject credential |
| 5694 | * @param identifier Kext identifier |
| 5695 | * |
| 5696 | * Determine whether the subject identified by the credential can unload the |
| 5697 | * specified kext. |
| 5698 | * |
| 5699 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 5700 | * errno should be returned. Suggested failure: EPERM for lack of privilege. |
| 5701 | */ |
| 5702 | typedef int mpo_kext_check_unload_t( |
| 5703 | kauth_cred_t cred, |
| 5704 | const char *identifier |
| 5705 | ); |
| 5706 | |
| 5707 | /** |
| 5708 | * @brief Access control check for querying information about loaded kexts |
| 5709 | * @param cred Subject credential |
| 5710 | * |
| 5711 | * Determine whether the subject identified by the credential can query |
| 5712 | * information about loaded kexts. |
| 5713 | * |
| 5714 | * @return Return 0 if access is granted, otherwise an appropriate value for |
| 5715 | * errno should be returned. Suggested failure: EPERM for lack of privilege. |
| 5716 | */ |
| 5717 | typedef int mpo_kext_check_query_t( |
| 5718 | kauth_cred_t cred |
| 5719 | ); |
| 5720 | |
| 5721 | /** |
| 5722 | * @brief Inform MAC policies that a vnode is being reclaimed |
| 5723 | * @param vp Object vnode |
| 5724 | * |
| 5725 | * Any external accounting tracking this vnode must consider it to be no longer valid. |
| 5726 | */ |
| 5727 | typedef void mpo_vnode_notify_reclaim_t( |
| 5728 | struct vnode *vp |
| 5729 | ); |
| 5730 | |
| 5731 | /** |
| 5732 | * @brief Inform MAC policies that a vnode has been deleted |
| 5733 | * @param cred Subject credential |
| 5734 | * @param dvp Parent directory vnode |
| 5735 | * @param dlabel Policy label for dvp |
| 5736 | * @param vp Object vnode to delete |
| 5737 | * @param label Policy label for vp |
| 5738 | * @param cnp Component name for vp |
| 5739 | * |
| 5740 | * Inform Mac policies that a vnode have been successfully deleted |
| 5741 | * (passing all MAC polices and DAC). |
| 5742 | */ |
| 5743 | typedef void mpo_vnode_notify_unlink_t( |
| 5744 | kauth_cred_t cred, |
| 5745 | struct vnode *dvp, |
| 5746 | struct label *dlabel, |
| 5747 | struct vnode *vp, |
| 5748 | struct label *label, |
| 5749 | struct componentname *cnp |
| 5750 | ); |
| 5751 | |
| 5752 | /* |
| 5753 | * Placeholder for future events that may need mac hooks. |
| 5754 | */ |
| 5755 | typedef void mpo_reserved_hook_t(void); |
| 5756 | |
| 5757 | /* |
| 5758 | * Policy module operations. |
| 5759 | * |
| 5760 | * Please note that this should be kept in sync with the check assumptions |
| 5761 | * policy in bsd/kern/policy_check.c (policy_ops struct). |
| 5762 | */ |
| 5763 | #define MAC_POLICY_OPS_VERSION 84 /* inc when new reserved slots are taken */ |
| 5764 | struct mac_policy_ops { |
| 5765 | mpo_audit_check_postselect_t *mpo_audit_check_postselect; |
| 5766 | mpo_audit_check_preselect_t *mpo_audit_check_preselect; |
| 5767 | |
| 5768 | mpo_reserved_hook_t *mpo_reserved01; |
| 5769 | mpo_reserved_hook_t *mpo_reserved02; |
| 5770 | mpo_reserved_hook_t *mpo_reserved03; |
| 5771 | mpo_reserved_hook_t *mpo_reserved04; |
| 5772 | |
| 5773 | mpo_cred_check_label_update_execve_t *mpo_cred_check_label_update_execve; |
| 5774 | mpo_cred_check_label_update_t *mpo_cred_check_label_update; |
| 5775 | mpo_cred_check_visible_t *mpo_cred_check_visible; |
| 5776 | mpo_cred_label_associate_fork_t *mpo_cred_label_associate_fork; |
| 5777 | mpo_cred_label_associate_kernel_t *mpo_cred_label_associate_kernel; |
| 5778 | mpo_cred_label_associate_t *mpo_cred_label_associate; |
| 5779 | mpo_cred_label_associate_user_t *mpo_cred_label_associate_user; |
| 5780 | mpo_cred_label_destroy_t *mpo_cred_label_destroy; |
| 5781 | mpo_cred_label_externalize_audit_t *mpo_cred_label_externalize_audit; |
| 5782 | mpo_cred_label_externalize_t *mpo_cred_label_externalize; |
| 5783 | mpo_cred_label_init_t *mpo_cred_label_init; |
| 5784 | mpo_cred_label_internalize_t *mpo_cred_label_internalize; |
| 5785 | mpo_cred_label_update_execve_t *mpo_cred_label_update_execve; |
| 5786 | mpo_cred_label_update_t *mpo_cred_label_update; |
| 5787 | |
| 5788 | mpo_devfs_label_associate_device_t *mpo_devfs_label_associate_device; |
| 5789 | mpo_devfs_label_associate_directory_t *mpo_devfs_label_associate_directory; |
| 5790 | mpo_devfs_label_copy_t *mpo_devfs_label_copy; |
| 5791 | mpo_devfs_label_destroy_t *mpo_devfs_label_destroy; |
| 5792 | mpo_devfs_label_init_t *mpo_devfs_label_init; |
| 5793 | mpo_devfs_label_update_t *mpo_devfs_label_update; |
| 5794 | |
| 5795 | mpo_file_check_change_offset_t *mpo_file_check_change_offset; |
| 5796 | mpo_file_check_create_t *mpo_file_check_create; |
| 5797 | mpo_file_check_dup_t *mpo_file_check_dup; |
| 5798 | mpo_file_check_fcntl_t *mpo_file_check_fcntl; |
| 5799 | mpo_file_check_get_offset_t *mpo_file_check_get_offset; |
| 5800 | mpo_file_check_get_t *mpo_file_check_get; |
| 5801 | mpo_file_check_inherit_t *mpo_file_check_inherit; |
| 5802 | mpo_file_check_ioctl_t *mpo_file_check_ioctl; |
| 5803 | mpo_file_check_lock_t *mpo_file_check_lock; |
| 5804 | mpo_file_check_mmap_downgrade_t *mpo_file_check_mmap_downgrade; |
| 5805 | mpo_file_check_mmap_t *mpo_file_check_mmap; |
| 5806 | mpo_file_check_receive_t *mpo_file_check_receive; |
| 5807 | mpo_file_check_set_t *mpo_file_check_set; |
| 5808 | mpo_file_label_init_t *mpo_file_label_init; /* deprecated not called anymore */ |
| 5809 | mpo_file_label_destroy_t *mpo_file_label_destroy; /* deprecated not called anymore */ |
| 5810 | mpo_file_label_associate_t *mpo_file_label_associate; /* deprecated not called anymore */ |
| 5811 | mpo_file_notify_close_t *mpo_file_notify_close; |
| 5812 | mpo_proc_check_launch_constraints_t *mpo_proc_check_launch_constraints; |
| 5813 | mpo_proc_notify_service_port_derive_t *mpo_proc_notify_service_port_derive; |
| 5814 | |
| 5815 | mpo_reserved_hook_t *mpo_reserved08; |
| 5816 | mpo_reserved_hook_t *mpo_reserved09; |
| 5817 | mpo_reserved_hook_t *mpo_reserved10; |
| 5818 | mpo_reserved_hook_t *mpo_reserved11; |
| 5819 | mpo_reserved_hook_t *mpo_reserved12; |
| 5820 | mpo_reserved_hook_t *mpo_reserved13; |
| 5821 | mpo_reserved_hook_t *mpo_reserved14; |
| 5822 | mpo_reserved_hook_t *mpo_reserved15; |
| 5823 | mpo_reserved_hook_t *mpo_reserved16; |
| 5824 | mpo_reserved_hook_t *mpo_reserved17; |
| 5825 | mpo_reserved_hook_t *mpo_reserved18; |
| 5826 | mpo_reserved_hook_t *mpo_reserved19; |
| 5827 | mpo_reserved_hook_t *mpo_reserved20; |
| 5828 | mpo_reserved_hook_t *mpo_reserved21; |
| 5829 | mpo_reserved_hook_t *mpo_reserved22; |
| 5830 | mpo_reserved_hook_t *mpo_reserved23; |
| 5831 | mpo_reserved_hook_t *mpo_reserved24; |
| 5832 | |
| 5833 | mpo_necp_check_open_t *mpo_necp_check_open; |
| 5834 | mpo_necp_check_client_action_t *mpo_necp_check_client_action; |
| 5835 | |
| 5836 | mpo_file_check_library_validation_t *mpo_file_check_library_validation; |
| 5837 | |
| 5838 | mpo_vnode_notify_setacl_t *mpo_vnode_notify_setacl; |
| 5839 | mpo_vnode_notify_setattrlist_t *mpo_vnode_notify_setattrlist; |
| 5840 | mpo_vnode_notify_setextattr_t *mpo_vnode_notify_setextattr; |
| 5841 | mpo_vnode_notify_setflags_t *mpo_vnode_notify_setflags; |
| 5842 | mpo_vnode_notify_setmode_t *mpo_vnode_notify_setmode; |
| 5843 | mpo_vnode_notify_setowner_t *mpo_vnode_notify_setowner; |
| 5844 | mpo_vnode_notify_setutimes_t *mpo_vnode_notify_setutimes; |
| 5845 | mpo_vnode_notify_truncate_t *mpo_vnode_notify_truncate; |
| 5846 | mpo_vnode_check_getattrlistbulk_t *mpo_vnode_check_getattrlistbulk; |
| 5847 | |
| 5848 | mpo_proc_check_get_task_special_port_t *mpo_proc_check_get_task_special_port; |
| 5849 | mpo_proc_check_set_task_special_port_t *mpo_proc_check_set_task_special_port; |
| 5850 | |
| 5851 | mpo_vnode_notify_swap_t *mpo_vnode_notify_swap; |
| 5852 | mpo_vnode_notify_unlink_t *mpo_vnode_notify_unlink; |
| 5853 | mpo_reserved_hook_t *mpo_reserved32; |
| 5854 | mpo_reserved_hook_t *mpo_reserved33; |
| 5855 | mpo_reserved_hook_t *mpo_reserved34; |
| 5856 | mpo_reserved_hook_t *mpo_reserved35; |
| 5857 | mpo_vnode_check_copyfile_t *mpo_vnode_check_copyfile; |
| 5858 | |
| 5859 | mpo_mount_check_quotactl_t *mpo_mount_check_quotactl; |
| 5860 | mpo_mount_check_fsctl_t *mpo_mount_check_fsctl; |
| 5861 | mpo_mount_check_getattr_t *mpo_mount_check_getattr; |
| 5862 | mpo_mount_check_label_update_t *mpo_mount_check_label_update; |
| 5863 | mpo_mount_check_mount_t *mpo_mount_check_mount; |
| 5864 | mpo_mount_check_remount_t *mpo_mount_check_remount; |
| 5865 | mpo_mount_check_setattr_t *mpo_mount_check_setattr; |
| 5866 | mpo_mount_check_stat_t *mpo_mount_check_stat; |
| 5867 | mpo_mount_check_umount_t *mpo_mount_check_umount; |
| 5868 | mpo_mount_label_associate_t *mpo_mount_label_associate; |
| 5869 | mpo_mount_label_destroy_t *mpo_mount_label_destroy; |
| 5870 | mpo_mount_label_externalize_t *mpo_mount_label_externalize; |
| 5871 | mpo_mount_label_init_t *mpo_mount_label_init; |
| 5872 | mpo_mount_label_internalize_t *mpo_mount_label_internalize; |
| 5873 | |
| 5874 | mpo_proc_check_expose_task_with_flavor_t *mpo_proc_check_expose_task_with_flavor; |
| 5875 | mpo_proc_check_get_task_with_flavor_t *mpo_proc_check_get_task_with_flavor; |
| 5876 | mpo_proc_check_task_id_token_get_task_t *mpo_proc_check_task_id_token_get_task; |
| 5877 | |
| 5878 | mpo_pipe_check_ioctl_t *mpo_pipe_check_ioctl; |
| 5879 | mpo_pipe_check_kqfilter_t *mpo_pipe_check_kqfilter; |
| 5880 | mpo_reserved_hook_t *mpo_reserved41; |
| 5881 | mpo_pipe_check_read_t *mpo_pipe_check_read; |
| 5882 | mpo_pipe_check_select_t *mpo_pipe_check_select; |
| 5883 | mpo_pipe_check_stat_t *mpo_pipe_check_stat; |
| 5884 | mpo_pipe_check_write_t *mpo_pipe_check_write; |
| 5885 | mpo_pipe_label_associate_t *mpo_pipe_label_associate; |
| 5886 | mpo_reserved_hook_t *mpo_reserved42; |
| 5887 | mpo_pipe_label_destroy_t *mpo_pipe_label_destroy; |
| 5888 | mpo_reserved_hook_t *mpo_reserved43; |
| 5889 | mpo_pipe_label_init_t *mpo_pipe_label_init; |
| 5890 | mpo_reserved_hook_t *mpo_reserved44; |
| 5891 | mpo_proc_check_syscall_mac_t *mpo_proc_check_syscall_mac; |
| 5892 | |
| 5893 | mpo_policy_destroy_t *mpo_policy_destroy; |
| 5894 | mpo_policy_init_t *mpo_policy_init; |
| 5895 | mpo_policy_initbsd_t *mpo_policy_initbsd; |
| 5896 | mpo_policy_syscall_t *mpo_policy_syscall; |
| 5897 | |
| 5898 | mpo_system_check_sysctlbyname_t *mpo_system_check_sysctlbyname; |
| 5899 | mpo_proc_check_inherit_ipc_ports_t *mpo_proc_check_inherit_ipc_ports; |
| 5900 | mpo_vnode_check_rename_t *mpo_vnode_check_rename; |
| 5901 | mpo_kext_check_query_t *mpo_kext_check_query; |
| 5902 | mpo_proc_notify_exec_complete_t *mpo_proc_notify_exec_complete; |
| 5903 | mpo_proc_notify_cs_invalidated_t *mpo_proc_notify_cs_invalidated; |
| 5904 | mpo_proc_check_syscall_unix_t *mpo_proc_check_syscall_unix; |
| 5905 | mpo_reserved_hook_t *mpo_reserved45; |
| 5906 | mpo_proc_check_set_host_special_port_t *mpo_proc_check_set_host_special_port; |
| 5907 | mpo_proc_check_set_host_exception_port_t *mpo_proc_check_set_host_exception_port; |
| 5908 | mpo_exc_action_check_exception_send_t *mpo_exc_action_check_exception_send; |
| 5909 | mpo_exc_action_label_associate_t *mpo_exc_action_label_associate; |
| 5910 | mpo_exc_action_label_populate_t *mpo_exc_action_label_populate; |
| 5911 | mpo_exc_action_label_destroy_t *mpo_exc_action_label_destroy; |
| 5912 | mpo_exc_action_label_init_t *mpo_exc_action_label_init; |
| 5913 | mpo_exc_action_label_update_t *mpo_exc_action_label_update; |
| 5914 | |
| 5915 | mpo_vnode_check_trigger_resolve_t *mpo_vnode_check_trigger_resolve; |
| 5916 | mpo_mount_check_mount_late_t *mpo_mount_check_mount_late; |
| 5917 | mpo_mount_check_snapshot_mount_t *mpo_mount_check_snapshot_mount; |
| 5918 | mpo_vnode_notify_reclaim_t *mpo_vnode_notify_reclaim; |
| 5919 | mpo_skywalk_flow_check_connect_t *mpo_skywalk_flow_check_connect; |
| 5920 | mpo_skywalk_flow_check_listen_t *mpo_skywalk_flow_check_listen; |
| 5921 | |
| 5922 | mpo_posixsem_check_create_t *mpo_posixsem_check_create; |
| 5923 | mpo_posixsem_check_open_t *mpo_posixsem_check_open; |
| 5924 | mpo_posixsem_check_post_t *mpo_posixsem_check_post; |
| 5925 | mpo_posixsem_check_unlink_t *mpo_posixsem_check_unlink; |
| 5926 | mpo_posixsem_check_wait_t *mpo_posixsem_check_wait; |
| 5927 | mpo_posixsem_label_associate_t *mpo_posixsem_label_associate; |
| 5928 | mpo_posixsem_label_destroy_t *mpo_posixsem_label_destroy; |
| 5929 | mpo_posixsem_label_init_t *mpo_posixsem_label_init; |
| 5930 | mpo_posixshm_check_create_t *mpo_posixshm_check_create; |
| 5931 | mpo_posixshm_check_mmap_t *mpo_posixshm_check_mmap; |
| 5932 | mpo_posixshm_check_open_t *mpo_posixshm_check_open; |
| 5933 | mpo_posixshm_check_stat_t *mpo_posixshm_check_stat; |
| 5934 | mpo_posixshm_check_truncate_t *mpo_posixshm_check_truncate; |
| 5935 | mpo_posixshm_check_unlink_t *mpo_posixshm_check_unlink; |
| 5936 | mpo_posixshm_label_associate_t *mpo_posixshm_label_associate; |
| 5937 | mpo_posixshm_label_destroy_t *mpo_posixshm_label_destroy; |
| 5938 | mpo_posixshm_label_init_t *mpo_posixshm_label_init; |
| 5939 | |
| 5940 | mpo_proc_check_debug_t *mpo_proc_check_debug; |
| 5941 | mpo_proc_check_fork_t *mpo_proc_check_fork; |
| 5942 | mpo_reserved_hook_t *mpo_reserved61; |
| 5943 | mpo_reserved_hook_t *mpo_reserved62; |
| 5944 | mpo_proc_check_getaudit_t *mpo_proc_check_getaudit; |
| 5945 | mpo_proc_check_getauid_t *mpo_proc_check_getauid; |
| 5946 | mpo_reserved_hook_t *mpo_reserved63; |
| 5947 | mpo_proc_check_mprotect_t *mpo_proc_check_mprotect; |
| 5948 | mpo_proc_check_sched_t *mpo_proc_check_sched; |
| 5949 | mpo_proc_check_setaudit_t *mpo_proc_check_setaudit; |
| 5950 | mpo_proc_check_setauid_t *mpo_proc_check_setauid; |
| 5951 | mpo_reserved_hook_t *mpo_reserved64; |
| 5952 | mpo_proc_check_signal_t *mpo_proc_check_signal; |
| 5953 | mpo_proc_check_wait_t *mpo_proc_check_wait; |
| 5954 | mpo_proc_check_dump_core_t *mpo_proc_check_dump_core; |
| 5955 | mpo_proc_check_remote_thread_create_t *mpo_proc_check_remote_thread_create; |
| 5956 | |
| 5957 | mpo_socket_check_accept_t *mpo_socket_check_accept; |
| 5958 | mpo_socket_check_accepted_t *mpo_socket_check_accepted; |
| 5959 | mpo_socket_check_bind_t *mpo_socket_check_bind; |
| 5960 | mpo_socket_check_connect_t *mpo_socket_check_connect; |
| 5961 | mpo_socket_check_create_t *mpo_socket_check_create; |
| 5962 | mpo_reserved_hook_t *mpo_reserved46; |
| 5963 | mpo_reserved_hook_t *mpo_reserved47; |
| 5964 | mpo_reserved_hook_t *mpo_reserved48; |
| 5965 | mpo_socket_check_listen_t *mpo_socket_check_listen; |
| 5966 | mpo_socket_check_receive_t *mpo_socket_check_receive; |
| 5967 | mpo_socket_check_received_t *mpo_socket_check_received; |
| 5968 | mpo_reserved_hook_t *mpo_reserved49; |
| 5969 | mpo_socket_check_send_t *mpo_socket_check_send; |
| 5970 | mpo_socket_check_stat_t *mpo_socket_check_stat; |
| 5971 | mpo_socket_check_setsockopt_t *mpo_socket_check_setsockopt; |
| 5972 | mpo_socket_check_getsockopt_t *mpo_socket_check_getsockopt; |
| 5973 | |
| 5974 | mpo_proc_check_get_movable_control_port_t *mpo_proc_check_get_movable_control_port; |
| 5975 | mpo_proc_check_dyld_process_info_notify_register_t *mpo_proc_check_dyld_process_info_notify_register; |
| 5976 | mpo_proc_check_setuid_t *mpo_proc_check_setuid; |
| 5977 | mpo_proc_check_seteuid_t *mpo_proc_check_seteuid; |
| 5978 | mpo_proc_check_setreuid_t *mpo_proc_check_setreuid; |
| 5979 | mpo_proc_check_setgid_t *mpo_proc_check_setgid; |
| 5980 | mpo_proc_check_setegid_t *mpo_proc_check_setegid; |
| 5981 | mpo_proc_check_setregid_t *mpo_proc_check_setregid; |
| 5982 | mpo_proc_check_settid_t *mpo_proc_check_settid; |
| 5983 | mpo_proc_check_memorystatus_control_t *mpo_proc_check_memorystatus_control; |
| 5984 | mpo_reserved_hook_t *mpo_reserved60; |
| 5985 | |
| 5986 | mpo_thread_telemetry_t *mpo_thread_telemetry; |
| 5987 | |
| 5988 | mpo_iokit_check_open_service_t *mpo_iokit_check_open_service; |
| 5989 | |
| 5990 | mpo_system_check_acct_t *mpo_system_check_acct; |
| 5991 | mpo_system_check_audit_t *mpo_system_check_audit; |
| 5992 | mpo_system_check_auditctl_t *mpo_system_check_auditctl; |
| 5993 | mpo_system_check_auditon_t *mpo_system_check_auditon; |
| 5994 | mpo_system_check_host_priv_t *mpo_system_check_host_priv; |
| 5995 | mpo_system_check_nfsd_t *mpo_system_check_nfsd; |
| 5996 | mpo_system_check_reboot_t *mpo_system_check_reboot; |
| 5997 | mpo_system_check_settime_t *mpo_system_check_settime; |
| 5998 | mpo_system_check_swapoff_t *mpo_system_check_swapoff; |
| 5999 | mpo_system_check_swapon_t *mpo_system_check_swapon; |
| 6000 | mpo_socket_check_ioctl_t *mpo_socket_check_ioctl; |
| 6001 | |
| 6002 | mpo_sysvmsg_label_associate_t *mpo_sysvmsg_label_associate; |
| 6003 | mpo_sysvmsg_label_destroy_t *mpo_sysvmsg_label_destroy; |
| 6004 | mpo_sysvmsg_label_init_t *mpo_sysvmsg_label_init; |
| 6005 | mpo_sysvmsg_label_recycle_t *mpo_sysvmsg_label_recycle; |
| 6006 | mpo_sysvmsq_check_enqueue_t *mpo_sysvmsq_check_enqueue; |
| 6007 | mpo_sysvmsq_check_msgrcv_t *mpo_sysvmsq_check_msgrcv; |
| 6008 | mpo_sysvmsq_check_msgrmid_t *mpo_sysvmsq_check_msgrmid; |
| 6009 | mpo_sysvmsq_check_msqctl_t *mpo_sysvmsq_check_msqctl; |
| 6010 | mpo_sysvmsq_check_msqget_t *mpo_sysvmsq_check_msqget; |
| 6011 | mpo_sysvmsq_check_msqrcv_t *mpo_sysvmsq_check_msqrcv; |
| 6012 | mpo_sysvmsq_check_msqsnd_t *mpo_sysvmsq_check_msqsnd; |
| 6013 | mpo_sysvmsq_label_associate_t *mpo_sysvmsq_label_associate; |
| 6014 | mpo_sysvmsq_label_destroy_t *mpo_sysvmsq_label_destroy; |
| 6015 | mpo_sysvmsq_label_init_t *mpo_sysvmsq_label_init; |
| 6016 | mpo_sysvmsq_label_recycle_t *mpo_sysvmsq_label_recycle; |
| 6017 | mpo_sysvsem_check_semctl_t *mpo_sysvsem_check_semctl; |
| 6018 | mpo_sysvsem_check_semget_t *mpo_sysvsem_check_semget; |
| 6019 | mpo_sysvsem_check_semop_t *mpo_sysvsem_check_semop; |
| 6020 | mpo_sysvsem_label_associate_t *mpo_sysvsem_label_associate; |
| 6021 | mpo_sysvsem_label_destroy_t *mpo_sysvsem_label_destroy; |
| 6022 | mpo_sysvsem_label_init_t *mpo_sysvsem_label_init; |
| 6023 | mpo_sysvsem_label_recycle_t *mpo_sysvsem_label_recycle; |
| 6024 | mpo_sysvshm_check_shmat_t *mpo_sysvshm_check_shmat; |
| 6025 | mpo_sysvshm_check_shmctl_t *mpo_sysvshm_check_shmctl; |
| 6026 | mpo_sysvshm_check_shmdt_t *mpo_sysvshm_check_shmdt; |
| 6027 | mpo_sysvshm_check_shmget_t *mpo_sysvshm_check_shmget; |
| 6028 | mpo_sysvshm_label_associate_t *mpo_sysvshm_label_associate; |
| 6029 | mpo_sysvshm_label_destroy_t *mpo_sysvshm_label_destroy; |
| 6030 | mpo_sysvshm_label_init_t *mpo_sysvshm_label_init; |
| 6031 | mpo_sysvshm_label_recycle_t *mpo_sysvshm_label_recycle; |
| 6032 | |
| 6033 | mpo_proc_notify_exit_t *mpo_proc_notify_exit; |
| 6034 | mpo_mount_check_snapshot_revert_t *mpo_mount_check_snapshot_revert; |
| 6035 | mpo_vnode_check_getattr_t *mpo_vnode_check_getattr; |
| 6036 | mpo_mount_check_snapshot_create_t *mpo_mount_check_snapshot_create; |
| 6037 | mpo_mount_check_snapshot_delete_t *mpo_mount_check_snapshot_delete; |
| 6038 | mpo_vnode_check_clone_t *mpo_vnode_check_clone; |
| 6039 | mpo_proc_check_get_cs_info_t *mpo_proc_check_get_cs_info; |
| 6040 | mpo_proc_check_set_cs_info_t *mpo_proc_check_set_cs_info; |
| 6041 | |
| 6042 | mpo_iokit_check_hid_control_t *mpo_iokit_check_hid_control; |
| 6043 | |
| 6044 | mpo_vnode_check_access_t *mpo_vnode_check_access; |
| 6045 | mpo_vnode_check_chdir_t *mpo_vnode_check_chdir; |
| 6046 | mpo_vnode_check_chroot_t *mpo_vnode_check_chroot; |
| 6047 | mpo_vnode_check_create_t *mpo_vnode_check_create; |
| 6048 | mpo_vnode_check_deleteextattr_t *mpo_vnode_check_deleteextattr; |
| 6049 | mpo_vnode_check_exchangedata_t *mpo_vnode_check_exchangedata; |
| 6050 | mpo_vnode_check_exec_t *mpo_vnode_check_exec; |
| 6051 | mpo_vnode_check_getattrlist_t *mpo_vnode_check_getattrlist; |
| 6052 | mpo_vnode_check_getextattr_t *mpo_vnode_check_getextattr; |
| 6053 | mpo_vnode_check_ioctl_t *mpo_vnode_check_ioctl; |
| 6054 | mpo_vnode_check_kqfilter_t *mpo_vnode_check_kqfilter; |
| 6055 | mpo_vnode_check_label_update_t *mpo_vnode_check_label_update; |
| 6056 | mpo_vnode_check_link_t *mpo_vnode_check_link; |
| 6057 | mpo_vnode_check_listextattr_t *mpo_vnode_check_listextattr; |
| 6058 | mpo_vnode_check_lookup_t *mpo_vnode_check_lookup; |
| 6059 | mpo_vnode_check_open_t *mpo_vnode_check_open; |
| 6060 | mpo_vnode_check_read_t *mpo_vnode_check_read; |
| 6061 | mpo_vnode_check_readdir_t *mpo_vnode_check_readdir; |
| 6062 | mpo_vnode_check_readlink_t *mpo_vnode_check_readlink; |
| 6063 | mpo_vnode_check_rename_from_t *mpo_vnode_check_rename_from; |
| 6064 | mpo_vnode_check_rename_to_t *mpo_vnode_check_rename_to; |
| 6065 | mpo_vnode_check_revoke_t *mpo_vnode_check_revoke; |
| 6066 | mpo_vnode_check_select_t *mpo_vnode_check_select; |
| 6067 | mpo_vnode_check_setattrlist_t *mpo_vnode_check_setattrlist; |
| 6068 | mpo_vnode_check_setextattr_t *mpo_vnode_check_setextattr; |
| 6069 | mpo_vnode_check_setflags_t *mpo_vnode_check_setflags; |
| 6070 | mpo_vnode_check_setmode_t *mpo_vnode_check_setmode; |
| 6071 | mpo_vnode_check_setowner_t *mpo_vnode_check_setowner; |
| 6072 | mpo_vnode_check_setutimes_t *mpo_vnode_check_setutimes; |
| 6073 | mpo_vnode_check_stat_t *mpo_vnode_check_stat; |
| 6074 | mpo_vnode_check_truncate_t *mpo_vnode_check_truncate; |
| 6075 | mpo_vnode_check_unlink_t *mpo_vnode_check_unlink; |
| 6076 | mpo_vnode_check_write_t *mpo_vnode_check_write; |
| 6077 | mpo_vnode_label_associate_devfs_t *mpo_vnode_label_associate_devfs; |
| 6078 | mpo_vnode_label_associate_extattr_t *mpo_vnode_label_associate_extattr; |
| 6079 | mpo_vnode_label_associate_file_t *mpo_vnode_label_associate_file; |
| 6080 | mpo_vnode_label_associate_pipe_t *mpo_vnode_label_associate_pipe; |
| 6081 | mpo_vnode_label_associate_posixsem_t *mpo_vnode_label_associate_posixsem; |
| 6082 | mpo_vnode_label_associate_posixshm_t *mpo_vnode_label_associate_posixshm; |
| 6083 | mpo_vnode_label_associate_singlelabel_t *mpo_vnode_label_associate_singlelabel; |
| 6084 | mpo_vnode_label_associate_socket_t *mpo_vnode_label_associate_socket; |
| 6085 | mpo_vnode_label_copy_t *mpo_vnode_label_copy; |
| 6086 | mpo_vnode_label_destroy_t *mpo_vnode_label_destroy; |
| 6087 | mpo_vnode_label_externalize_audit_t *mpo_vnode_label_externalize_audit; |
| 6088 | mpo_vnode_label_externalize_t *mpo_vnode_label_externalize; |
| 6089 | mpo_vnode_label_init_t *mpo_vnode_label_init; |
| 6090 | mpo_vnode_label_internalize_t *mpo_vnode_label_internalize; |
| 6091 | mpo_vnode_label_recycle_t *mpo_vnode_label_recycle; |
| 6092 | mpo_vnode_label_store_t *mpo_vnode_label_store; |
| 6093 | mpo_vnode_label_update_extattr_t *mpo_vnode_label_update_extattr; |
| 6094 | mpo_vnode_label_update_t *mpo_vnode_label_update; |
| 6095 | mpo_vnode_notify_create_t *mpo_vnode_notify_create; |
| 6096 | mpo_vnode_check_signature_t *mpo_vnode_check_signature; |
| 6097 | mpo_vnode_check_uipc_bind_t *mpo_vnode_check_uipc_bind; |
| 6098 | mpo_vnode_check_uipc_connect_t *mpo_vnode_check_uipc_connect; |
| 6099 | |
| 6100 | mpo_proc_check_run_cs_invalid_t *mpo_proc_check_run_cs_invalid; |
| 6101 | mpo_proc_check_suspend_resume_t *mpo_proc_check_suspend_resume; |
| 6102 | |
| 6103 | mpo_thread_userret_t *mpo_thread_userret; |
| 6104 | |
| 6105 | mpo_iokit_check_set_properties_t *mpo_iokit_check_set_properties; |
| 6106 | |
| 6107 | mpo_vnode_check_supplemental_signature_t *mpo_vnode_check_supplemental_signature; |
| 6108 | |
| 6109 | mpo_vnode_check_searchfs_t *mpo_vnode_check_searchfs; |
| 6110 | |
| 6111 | mpo_priv_check_t *mpo_priv_check; |
| 6112 | mpo_priv_grant_t *mpo_priv_grant; |
| 6113 | |
| 6114 | mpo_proc_check_map_anon_t *mpo_proc_check_map_anon; |
| 6115 | |
| 6116 | mpo_vnode_check_fsgetpath_t *mpo_vnode_check_fsgetpath; |
| 6117 | |
| 6118 | mpo_iokit_check_open_t *mpo_iokit_check_open; |
| 6119 | |
| 6120 | mpo_proc_check_ledger_t *mpo_proc_check_ledger; |
| 6121 | |
| 6122 | mpo_vnode_notify_rename_t *mpo_vnode_notify_rename; |
| 6123 | |
| 6124 | mpo_vnode_check_setacl_t *mpo_vnode_check_setacl; |
| 6125 | |
| 6126 | mpo_vnode_notify_deleteextattr_t *mpo_vnode_notify_deleteextattr; |
| 6127 | |
| 6128 | mpo_system_check_kas_info_t *mpo_system_check_kas_info; |
| 6129 | |
| 6130 | mpo_vnode_check_lookup_preflight_t *mpo_vnode_check_lookup_preflight; |
| 6131 | |
| 6132 | mpo_vnode_notify_open_t *mpo_vnode_notify_open; |
| 6133 | |
| 6134 | mpo_system_check_info_t *mpo_system_check_info; |
| 6135 | |
| 6136 | mpo_pty_notify_grant_t *mpo_pty_notify_grant; |
| 6137 | mpo_pty_notify_close_t *mpo_pty_notify_close; |
| 6138 | |
| 6139 | mpo_vnode_find_sigs_t *mpo_vnode_find_sigs; |
| 6140 | |
| 6141 | mpo_kext_check_load_t *mpo_kext_check_load; |
| 6142 | mpo_kext_check_unload_t *mpo_kext_check_unload; |
| 6143 | |
| 6144 | mpo_proc_check_proc_info_t *mpo_proc_check_proc_info; |
| 6145 | mpo_vnode_notify_link_t *mpo_vnode_notify_link; |
| 6146 | mpo_iokit_check_filter_properties_t *mpo_iokit_check_filter_properties; |
| 6147 | mpo_iokit_check_get_property_t *mpo_iokit_check_get_property; |
| 6148 | }; |
| 6149 | |
| 6150 | /** |
| 6151 | * @brief MAC policy handle type |
| 6152 | * |
| 6153 | * The MAC handle is used to uniquely identify a loaded policy within |
| 6154 | * the MAC Framework. |
| 6155 | * |
| 6156 | * A variable of this type is set by mac_policy_register(). |
| 6157 | */ |
| 6158 | typedef unsigned int mac_policy_handle_t; |
| 6159 | |
| 6160 | #define mpc_t struct mac_policy_conf * |
| 6161 | |
| 6162 | /** |
| 6163 | * @brief Mac policy configuration |
| 6164 | * |
| 6165 | * This structure specifies the configuration information for a |
| 6166 | * MAC policy module. A policy module developer must supply |
| 6167 | * a short unique policy name, a more descriptive full name, a list of label |
| 6168 | * namespaces and count, a pointer to the registered enty point operations, |
| 6169 | * any load time flags, and optionally, a pointer to a label slot identifier. |
| 6170 | * |
| 6171 | * The Framework will update the runtime flags (mpc_runtime_flags) to |
| 6172 | * indicate that the module has been registered. |
| 6173 | * |
| 6174 | * If the label slot identifier (mpc_field_off) is NULL, the Framework |
| 6175 | * will not provide label storage for the policy. Otherwise, the |
| 6176 | * Framework will store the label location (slot) in this field. |
| 6177 | * |
| 6178 | * The mpc_list field is used by the Framework and should not be |
| 6179 | * modified by policies. |
| 6180 | */ |
| 6181 | /* XXX - reorder these for better alignment on 64bit platforms */ |
| 6182 | struct mac_policy_conf { |
| 6183 | const char *mpc_name; /** policy name */ |
| 6184 | const char *mpc_fullname; /** full name */ |
| 6185 | char const * const *mpc_labelnames; /** managed label namespaces */ |
| 6186 | unsigned int mpc_labelname_count; /** number of managed label namespaces */ |
| 6187 | const struct mac_policy_ops *mpc_ops; /** operation vector */ |
| 6188 | int mpc_loadtime_flags; /** load time flags */ |
| 6189 | int *mpc_field_off; /** label slot */ |
| 6190 | int mpc_runtime_flags; /** run time flags */ |
| 6191 | mpc_t mpc_list; /** List reference */ |
| 6192 | void *mpc_data; /** module data */ |
| 6193 | }; |
| 6194 | |
| 6195 | /** |
| 6196 | * @brief MAC policy module registration routine |
| 6197 | * |
| 6198 | * This function is called to register a policy with the |
| 6199 | * MAC framework. A policy module will typically call this from the |
| 6200 | * Darwin KEXT registration routine. |
| 6201 | */ |
| 6202 | int mac_policy_register(struct mac_policy_conf *mpc, |
| 6203 | mac_policy_handle_t *handlep, void *xd); |
| 6204 | |
| 6205 | /** |
| 6206 | * @brief MAC policy module de-registration routine |
| 6207 | * |
| 6208 | * This function is called to de-register a policy with the |
| 6209 | * MAC framework. A policy module will typically call this from the |
| 6210 | * Darwin KEXT de-registration routine. |
| 6211 | */ |
| 6212 | int mac_policy_unregister(mac_policy_handle_t handle); |
| 6213 | |
| 6214 | /* |
| 6215 | * Framework entry points for the policies to add audit data. |
| 6216 | */ |
| 6217 | int mac_audit_text(char *text, mac_policy_handle_t handle); |
| 6218 | |
| 6219 | /* |
| 6220 | * Calls to assist with use of Apple XATTRs within policy modules. |
| 6221 | */ |
| 6222 | int mac_vnop_setxattr(struct vnode *, const char *, char *, size_t); |
| 6223 | int mac_vnop_getxattr(struct vnode *, const char *, char *, size_t, |
| 6224 | size_t *); |
| 6225 | int mac_vnop_removexattr(struct vnode *, const char *); |
| 6226 | |
| 6227 | /** |
| 6228 | * @brief Set an extended attribute on a vnode-based fileglob. |
| 6229 | * @param fg fileglob representing file to attach the extended attribute |
| 6230 | * @param name extended attribute name |
| 6231 | * @param buf buffer of data to use as the extended attribute value |
| 6232 | * @param len size of buffer |
| 6233 | * |
| 6234 | * Sets the value of an extended attribute on a file. |
| 6235 | * |
| 6236 | * Caller must hold an iocount on the vnode represented by the fileglob. |
| 6237 | */ |
| 6238 | #ifdef KERNEL_PRIVATE |
| 6239 | int mac_file_setxattr(struct fileglob *fg, const char *name, char *buf, size_t len); |
| 6240 | #endif |
| 6241 | |
| 6242 | /** |
| 6243 | * @brief Get an extended attribute from a vnode-based fileglob. |
| 6244 | * @param fg fileglob representing file to read the extended attribute |
| 6245 | * @param name extended attribute name |
| 6246 | * @param buf buffer of data to hold the extended attribute value |
| 6247 | * @param len size of buffer |
| 6248 | * @param attrlen size of full extended attribute value |
| 6249 | * |
| 6250 | * Gets the value of an extended attribute on a file. |
| 6251 | * |
| 6252 | * Caller must hold an iocount on the vnode represented by the fileglob. |
| 6253 | */ |
| 6254 | #ifdef KERNEL_PRIVATE |
| 6255 | int mac_file_getxattr(struct fileglob *fg, const char *name, char *buf, size_t len, |
| 6256 | size_t *attrlen); |
| 6257 | #endif |
| 6258 | |
| 6259 | /** |
| 6260 | * @brief Remove an extended attribute from a vnode-based fileglob. |
| 6261 | * @param fg fileglob representing file to remove the extended attribute |
| 6262 | * @param name extended attribute name |
| 6263 | * |
| 6264 | * Removes the named extended attribute from the file. |
| 6265 | * |
| 6266 | * Caller must hold an iocount on the vnode represented by the fileglob. |
| 6267 | */ |
| 6268 | #ifdef KERNEL_PRIVATE |
| 6269 | int mac_file_removexattr(struct fileglob *fg, const char *name); |
| 6270 | #endif |
| 6271 | |
| 6272 | /* |
| 6273 | * Arbitrary limit on how much data will be logged by the audit |
| 6274 | * entry points above. |
| 6275 | */ |
| 6276 | #define MAC_AUDIT_DATA_LIMIT 1024 |
| 6277 | |
| 6278 | /* |
| 6279 | * Values returned by mac_audit_{pre,post}select. To combine the responses |
| 6280 | * of the security policies into a single decision, |
| 6281 | * mac_audit_{pre,post}select() choose the greatest value returned. |
| 6282 | */ |
| 6283 | #define MAC_AUDIT_DEFAULT 0 /* use system behavior */ |
| 6284 | #define MAC_AUDIT_NO 1 /* force not auditing this event */ |
| 6285 | #define MAC_AUDIT_YES 2 /* force auditing this event */ |
| 6286 | |
| 6287 | // \defgroup mpc_loadtime_flags Flags for the mpc_loadtime_flags field |
| 6288 | |
| 6289 | /** |
| 6290 | * @name Flags for the mpc_loadtime_flags field |
| 6291 | * @see mac_policy_conf |
| 6292 | * |
| 6293 | * This is the complete list of flags that are supported by the |
| 6294 | * mpc_loadtime_flags field of the mac_policy_conf structure. These |
| 6295 | * flags specify the load time behavior of MAC Framework policy |
| 6296 | * modules. |
| 6297 | */ |
| 6298 | |
| 6299 | /*@{*/ |
| 6300 | |
| 6301 | /** |
| 6302 | * @brief Flag to indicate registration preference |
| 6303 | * |
| 6304 | * This flag indicates that the policy module must be loaded and |
| 6305 | * initialized early in the boot process. If the flag is specified, |
| 6306 | * attempts to register the module following boot will be rejected. The |
| 6307 | * flag may be used by policies that require pervasive labeling of all |
| 6308 | * system objects, and cannot handle objects that have not been |
| 6309 | * properly initialized by the policy. |
| 6310 | */ |
| 6311 | #define MPC_LOADTIME_FLAG_NOTLATE 0x00000001 |
| 6312 | |
| 6313 | /** |
| 6314 | * @brief Flag to indicate unload preference |
| 6315 | * |
| 6316 | * This flag indicates that the policy module may be unloaded. If this |
| 6317 | * flag is not set, then the policy framework will reject requests to |
| 6318 | * unload the module. This flag might be used by modules that allocate |
| 6319 | * label state and are unable to free that state at runtime, or for |
| 6320 | * modules that simply do not want to permit unload operations. |
| 6321 | */ |
| 6322 | #define MPC_LOADTIME_FLAG_UNLOADOK 0x00000002 |
| 6323 | |
| 6324 | /** |
| 6325 | * @brief Unsupported |
| 6326 | * |
| 6327 | * XXX This flag is not yet supported. |
| 6328 | */ |
| 6329 | #define MPC_LOADTIME_FLAG_LABELMBUFS 0x00000004 |
| 6330 | |
| 6331 | /** |
| 6332 | * @brief Flag to indicate a base policy |
| 6333 | * |
| 6334 | * This flag indicates that the policy module is a base policy. Only |
| 6335 | * one module can declare itself as base, otherwise the boot process |
| 6336 | * will be halted. |
| 6337 | */ |
| 6338 | #define MPC_LOADTIME_BASE_POLICY 0x00000008 |
| 6339 | |
| 6340 | /*@}*/ |
| 6341 | |
| 6342 | /** |
| 6343 | * @brief Policy registration flag |
| 6344 | * @see mac_policy_conf |
| 6345 | * |
| 6346 | * This flag indicates that the policy module has been successfully |
| 6347 | * registered with the TrustedBSD MAC Framework. The Framework will |
| 6348 | * set this flag in the mpc_runtime_flags field of the policy's |
| 6349 | * mac_policy_conf structure after registering the policy. |
| 6350 | */ |
| 6351 | #define MPC_RUNTIME_FLAG_REGISTERED 0x00000001 |
| 6352 | |
| 6353 | /* |
| 6354 | * Depends on POLICY_VER |
| 6355 | */ |
| 6356 | |
| 6357 | #ifndef POLICY_VER |
| 6358 | #define POLICY_VER 1.0 |
| 6359 | #endif |
| 6360 | |
| 6361 | #define MAC_POLICY_SET(handle, mpops, mpname, mpfullname, lnames, lcount, slot, lflags, rflags) \ |
| 6362 | static struct mac_policy_conf mpname##_mac_policy_conf = { \ |
| 6363 | .mpc_name = #mpname, \ |
| 6364 | .mpc_fullname = mpfullname, \ |
| 6365 | .mpc_labelnames = lnames, \ |
| 6366 | .mpc_labelname_count = lcount, \ |
| 6367 | .mpc_ops = mpops, \ |
| 6368 | .mpc_loadtime_flags = lflags, \ |
| 6369 | .mpc_field_off = slot, \ |
| 6370 | .mpc_runtime_flags = rflags \ |
| 6371 | }; \ |
| 6372 | \ |
| 6373 | static kern_return_t \ |
| 6374 | kmod_start(kmod_info_t *ki, void *xd) \ |
| 6375 | { \ |
| 6376 | return mac_policy_register(&mpname##_mac_policy_conf, \ |
| 6377 | &handle, xd); \ |
| 6378 | } \ |
| 6379 | \ |
| 6380 | static kern_return_t \ |
| 6381 | kmod_stop(kmod_info_t *ki, void *xd) \ |
| 6382 | { \ |
| 6383 | return mac_policy_unregister(handle); \ |
| 6384 | } \ |
| 6385 | \ |
| 6386 | extern kern_return_t _start(kmod_info_t *ki, void *data); \ |
| 6387 | extern kern_return_t _stop(kmod_info_t *ki, void *data); \ |
| 6388 | \ |
| 6389 | KMOD_EXPLICIT_DECL(security.mpname, POLICY_VER, _start, _stop) \ |
| 6390 | kmod_start_func_t *_realmain = kmod_start; \ |
| 6391 | kmod_stop_func_t *_antimain = kmod_stop; \ |
| 6392 | int _kext_apple_cc = __APPLE_CC__ |
| 6393 | |
| 6394 | /* |
| 6395 | * Policy interface to map a struct label pointer to per-policy data. |
| 6396 | * Typically, policies wrap this in their own accessor macro that casts an |
| 6397 | * intptr_t to a policy-specific data type. |
| 6398 | */ |
| 6399 | #ifdef KERNEL_PRIVATE |
| 6400 | struct label * mac_label_verify(struct label **labelp); |
| 6401 | intptr_t mac_label_get(struct label *l, int slot); |
| 6402 | /* |
| 6403 | * Sets a label slot to the given pointer value, `v`. `v` cannot be `~0ULL`. |
| 6404 | */ |
| 6405 | void mac_label_set(struct label *l, int slot, intptr_t v); |
| 6406 | struct label * mac_labelzone_alloc(int flags); |
| 6407 | struct label * mac_labelzone_alloc_for_owner(struct label **labelp, int flags, |
| 6408 | void (^extra_setup)(struct label *)); |
| 6409 | struct label * mac_labelzone_alloc_owned(struct label **labelp, int flags, |
| 6410 | void (^extra_setup)(struct label *)); |
| 6411 | void mac_labelzone_free(struct label *l); |
| 6412 | void mac_labelzone_free_owned(struct label **labelp, |
| 6413 | void (^extra_deinit)(struct label *)); |
| 6414 | intptr_t mac_vnode_label_get(struct vnode *vp, int slot, intptr_t sentinel); |
| 6415 | void mac_vnode_label_set(struct vnode *vp, int slot, intptr_t v); |
| 6416 | #endif |
| 6417 | |
| 6418 | #define mac_get_mpc(h) (mac_policy_list.entries[h].mpc) |
| 6419 | |
| 6420 | /** |
| 6421 | * @name Flags for MAC allocator interfaces |
| 6422 | * |
| 6423 | * These flags are passed to the Darwin kernel allocator routines to |
| 6424 | * indicate whether the allocation is permitted to block or not. |
| 6425 | * Caution should be taken; some operations are not permitted to sleep, |
| 6426 | * and some types of locks cannot be held when sleeping. |
| 6427 | */ |
| 6428 | |
| 6429 | /*@{*/ |
| 6430 | |
| 6431 | /** |
| 6432 | * @brief Allocation operations may block |
| 6433 | * |
| 6434 | * If memory is not immediately available, the allocation routine |
| 6435 | * will block (typically sleeping) until memory is available. |
| 6436 | * |
| 6437 | * @warning Inappropriate use of this flag may cause kernel panics. |
| 6438 | */ |
| 6439 | #define MAC_WAITOK 0 |
| 6440 | |
| 6441 | /** |
| 6442 | * @brief Allocation operations may not block |
| 6443 | * |
| 6444 | * Rather than blocking, the allocator may return an error if memory |
| 6445 | * is not immediately available. This type of allocation will not |
| 6446 | * sleep, preserving locking semantics. |
| 6447 | */ |
| 6448 | #define MAC_NOWAIT 1 |
| 6449 | |
| 6450 | /*@}*/ |
| 6451 | |
| 6452 | #endif /* !_SECURITY_MAC_POLICY_H_ */ |
| 6453 |
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