1 | /* |
2 | * Copyright (c) 2000-2002 Apple Computer, 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 | /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ |
29 | /* |
30 | * Copyright (c) 1991, 1993 |
31 | * The Regents of the University of California. All rights reserved. |
32 | * |
33 | * Redistribution and use in source and binary forms, with or without |
34 | * modification, are permitted provided that the following conditions |
35 | * are met: |
36 | * 1. Redistributions of source code must retain the above copyright |
37 | * notice, this list of conditions and the following disclaimer. |
38 | * 2. Redistributions in binary form must reproduce the above copyright |
39 | * notice, this list of conditions and the following disclaimer in the |
40 | * documentation and/or other materials provided with the distribution. |
41 | * 3. All advertising materials mentioning features or use of this software |
42 | * must display the following acknowledgement: |
43 | * This product includes software developed by the University of |
44 | * California, Berkeley and its contributors. |
45 | * 4. Neither the name of the University nor the names of its contributors |
46 | * may be used to endorse or promote products derived from this software |
47 | * without specific prior written permission. |
48 | * |
49 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
50 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
51 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
52 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
53 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
54 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
55 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
56 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
57 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
58 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
59 | * SUCH DAMAGE. |
60 | * |
61 | * @(#)signalvar.h 8.3 (Berkeley) 1/4/94 |
62 | */ |
63 | |
64 | #ifndef _SYS_SIGNALVAR_H_ /* tmp for user.h */ |
65 | #define _SYS_SIGNALVAR_H_ |
66 | |
67 | #include <sys/appleapiopts.h> |
68 | |
69 | #ifdef BSD_KERNEL_PRIVATE |
70 | |
71 | #include <stdatomic.h> |
72 | |
73 | /* signal flags */ |
74 | #define SAS_OLDMASK 0x01 /* need to restore mask before pause */ |
75 | #define SAS_ALTSTACK 0x02 /* have alternate signal stack */ |
76 | |
77 | /* |
78 | * Additional signal action values, used only temporarily/internally; these |
79 | * values should be non-intersecting with values defined in signal.h, e.g.: |
80 | * SIG_IGN, SIG_DFL, SIG_ERR, SIG_IGN. |
81 | */ |
82 | #define KERN_SIG_CATCH CAST_USER_ADDR_T(2) |
83 | #define KERN_SIG_HOLD CAST_USER_ADDR_T(3) |
84 | #define KERN_SIG_WAIT CAST_USER_ADDR_T(4) |
85 | |
86 | /* Values for ps_sigreturn_validation */ |
87 | #define PS_SIGRETURN_VALIDATION_DEFAULT 0x0u |
88 | #define PS_SIGRETURN_VALIDATION_ENABLED 0x1u |
89 | #define PS_SIGRETURN_VALIDATION_DISABLED 0x2u |
90 | |
91 | /* |
92 | * get signal action for process and signal; currently only for current process |
93 | */ |
94 | #define SIGACTION(p, sig) ({ p->p_sigacts.ps_sigact[(sig)]; }) |
95 | #define SIGTRAMP(p, sig) ({ p->p_sigacts.ps_trampact[(sig)]; }) |
96 | |
97 | /* |
98 | * Check for per-process and per thread signals. |
99 | */ |
100 | #define SHOULDissignal(p, uthreadp) \ |
101 | (((uthreadp)->uu_siglist) \ |
102 | & ~((((uthreadp)->uu_sigmask) \ |
103 | | (((p)->p_lflag & P_LTRACED) ? 0 : (p)->p_sigignore)) \ |
104 | & ~sigcantmask)) |
105 | |
106 | /* |
107 | * Check for signals and per-thread signals. |
108 | * Use in trap() and syscall() before |
109 | * exiting kernel. |
110 | */ |
111 | #define CHECK_SIGNALS(p, thread, uthreadp) \ |
112 | (!thread_should_halt(thread) \ |
113 | && (SHOULDissignal(p,uthreadp))) |
114 | |
115 | /* |
116 | * Signal properties and actions. |
117 | * The array below categorizes the signals and their default actions |
118 | * according to the following properties: |
119 | */ |
120 | #define SA_KILL 0x01 /* terminates process by default */ |
121 | #define SA_CORE 0x02 /* ditto and coredumps */ |
122 | #define SA_STOP 0x04 /* suspend process */ |
123 | #define SA_TTYSTOP 0x08 /* ditto, from tty */ |
124 | #define SA_IGNORE 0x10 /* ignore by default */ |
125 | #define SA_CONT 0x20 /* continue if suspended */ |
126 | #define SA_CANTMASK 0x40 /* non-maskable, catchable */ |
127 | |
128 | #ifdef SIGPROP |
129 | int sigprop[NSIG] = { |
130 | 0, /* unused */ |
131 | SA_KILL, /* SIGHUP */ |
132 | SA_KILL, /* SIGINT */ |
133 | SA_KILL | SA_CORE, /* SIGQUIT */ |
134 | SA_KILL | SA_CORE, /* SIGILL */ |
135 | SA_KILL | SA_CORE, /* SIGTRAP */ |
136 | SA_KILL | SA_CORE, /* SIGABRT */ |
137 | SA_KILL | SA_CORE, /* SIGEMT */ |
138 | SA_KILL | SA_CORE, /* SIGFPE */ |
139 | SA_KILL, /* SIGKILL */ |
140 | SA_KILL | SA_CORE, /* SIGBUS */ |
141 | SA_KILL | SA_CORE, /* SIGSEGV */ |
142 | SA_KILL | SA_CORE, /* SIGSYS */ |
143 | SA_KILL, /* SIGPIPE */ |
144 | SA_KILL, /* SIGALRM */ |
145 | SA_KILL, /* SIGTERM */ |
146 | SA_IGNORE, /* SIGURG */ |
147 | SA_STOP, /* SIGSTOP */ |
148 | SA_STOP | SA_TTYSTOP, /* SIGTSTP */ |
149 | SA_IGNORE | SA_CONT, /* SIGCONT */ |
150 | SA_IGNORE, /* SIGCHLD */ |
151 | SA_STOP | SA_TTYSTOP, /* SIGTTIN */ |
152 | SA_STOP | SA_TTYSTOP, /* SIGTTOU */ |
153 | SA_IGNORE, /* SIGIO */ |
154 | SA_KILL, /* SIGXCPU */ |
155 | SA_KILL, /* SIGXFSZ */ |
156 | SA_KILL, /* SIGVTALRM */ |
157 | SA_KILL, /* SIGPROF */ |
158 | SA_IGNORE, /* SIGWINCH */ |
159 | SA_IGNORE, /* SIGINFO */ |
160 | SA_KILL, /* SIGUSR1 */ |
161 | SA_KILL, /* SIGUSR2 */ |
162 | }; |
163 | |
164 | #define contsigmask (sigmask(SIGCONT)) |
165 | #define stopsigmask (sigmask(SIGSTOP) | sigmask(SIGTSTP) | \ |
166 | sigmask(SIGTTIN) | sigmask(SIGTTOU)) |
167 | |
168 | #endif /* SIGPROP */ |
169 | |
170 | #define sigcantmask (sigmask(SIGKILL) | sigmask(SIGSTOP)) |
171 | |
172 | #define SIGRESTRICTMASK (sigmask(SIGILL) | sigmask(SIGTRAP) | sigmask(SIGABRT) | \ |
173 | sigmask(SIGFPE) | sigmask(SIGBUS) | sigmask(SIGSEGV) | \ |
174 | sigmask(SIGSYS)) |
175 | |
176 | /* |
177 | * Machine-independent functions: |
178 | */ |
179 | |
180 | #if DEVELOPMENT || DEBUG |
181 | extern bool no_sigsys; |
182 | #define send_sigsys (!no_sigsys) |
183 | #else |
184 | #define send_sigsys 1 |
185 | #endif |
186 | |
187 | |
188 | void execsigs(struct proc *p, thread_t thread); |
189 | void gsignal(int pgid, int sig); |
190 | int issignal_locked(struct proc *p); |
191 | int CURSIG(struct proc *p); |
192 | int clear_procsiglist(struct proc *p, int bit, int in_signalstart); |
193 | int set_procsigmask(struct proc *p, int bit); |
194 | void postsig_locked(int sig); |
195 | void siginit(struct proc *p); |
196 | void trapsignal(struct proc *p, int sig, unsigned code); |
197 | void pt_setrunnable(struct proc *p); |
198 | int hassigprop(int sig, int prop); |
199 | int setsigvec(proc_t, thread_t, int signum, struct __kern_sigaction *, boolean_t in_sigstart); |
200 | |
201 | struct os_reason; |
202 | /* |
203 | * Machine-dependent functions: |
204 | */ |
205 | void sendsig(struct proc *, /*sig_t*/ user_addr_t action, int sig, |
206 | int returnmask, uint32_t code, sigset_t siginfo); |
207 | |
208 | void psignal(struct proc *p, int sig); |
209 | void psignal_with_reason(struct proc *p, int sig, struct os_reason *signal_reason); |
210 | void psignal_locked(struct proc *, int); |
211 | void psignal_try_thread(proc_t, thread_t, int signum); |
212 | void psignal_try_thread_with_reason(proc_t, thread_t, int, struct os_reason*); |
213 | void psignal_thread_with_reason(proc_t, thread_t, int, struct os_reason*); |
214 | void psignal_uthread(thread_t, int); |
215 | void pgsignal(struct pgrp *pgrp, int sig, int checkctty); |
216 | void tty_pgsignal_locked(struct tty * tp, int sig, int checkctty); |
217 | void threadsignal(thread_t sig_actthread, int signum, |
218 | mach_exception_code_t code, boolean_t set_exitreason); |
219 | int thread_issignal(proc_t p, thread_t th, sigset_t mask); |
220 | void psignal_vfork(struct proc *p, task_t new_task, thread_t thread, |
221 | int signum); |
222 | void psignal_vfork_with_reason(proc_t p, task_t new_task, thread_t thread, |
223 | int signum, struct os_reason *signal_reason); |
224 | void signal_setast(thread_t sig_actthread); |
225 | void pgsigio(pid_t pgid, int signalnum); |
226 | |
227 | void sig_lock_to_exit(struct proc *p); |
228 | int sig_try_locked(struct proc *p); |
229 | |
230 | #endif /* BSD_KERNEL_PRIVATE */ |
231 | |
232 | #if defined(KERNEL_PRIVATE) |
233 | /* Forward-declare these for consumers of the SDK that don't know about BSD types */ |
234 | struct proc; |
235 | struct os_reason; |
236 | void psignal_sigkill_with_reason(struct proc *p, struct os_reason *signal_reason); |
237 | #endif /* defined(KERNEL_PRIVATE) */ |
238 | |
239 | #ifdef XNU_KERNEL_PRIVATE |
240 | |
241 | /* Functions exported to Mach as well */ |
242 | |
243 | #define COREDUMP_IGNORE_ULIMIT 0x0001 /* Ignore the process's core file ulimit. */ |
244 | #define COREDUMP_FULLFSYNC 0x0002 /* Run F_FULLFSYNC on the core file's vnode */ |
245 | |
246 | cpu_type_t process_cpu_type(struct proc * core_proc); |
247 | cpu_type_t process_cpu_subtype(struct proc * core_proc); |
248 | int coredump(struct proc *p, uint32_t reserve_mb, int coredump_flags); |
249 | void set_thread_exit_reason(void *th, void *reason, boolean_t proc_locked); |
250 | |
251 | #endif /* XNU_KERNEL_PRIVATE */ |
252 | |
253 | |
254 | #endif /* !_SYS_SIGNALVAR_H_ */ |
255 | |