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) 1987, 1988, 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 | * @(#)disklabel.h 8.2 (Berkeley) 7/10/94 |
62 | */ |
63 | #ifndef _SYS_DISKLABEL_H_ |
64 | #define _SYS_DISKLABEL_H_ |
65 | |
66 | #include <sys/appleapiopts.h> |
67 | #include <sys/types.h> /* for daddr_t */ |
68 | |
69 | #ifdef __APPLE_API_OBSOLETE |
70 | |
71 | /* |
72 | * Disk description table, see disktab(5) |
73 | */ |
74 | #define _PATH_DISKTAB "/etc/disktab" |
75 | #define DISKTAB "/etc/disktab" /* deprecated */ |
76 | |
77 | /* |
78 | * Each disk has a label which includes information about the hardware |
79 | * disk geometry, filesystem partitions, and drive specific information. |
80 | * The location of the label, as well as the number of partitions the |
81 | * label can describe and the number of the "whole disk" (raw) |
82 | * paritition are machine dependent. |
83 | */ |
84 | #include <machine/disklabel.h> |
85 | |
86 | /* |
87 | * The absolute maximum number of disk partitions allowed. |
88 | * This is the maximum value of MAXPARTITIONS for which 'struct disklabel' |
89 | * is <= DEV_BSIZE bytes long. If MAXPARTITIONS is greater than this, beware. |
90 | */ |
91 | #define MAXMAXPARTITIONS 22 |
92 | #if MAXPARTITIONS > MAXMAXPARTITIONS |
93 | #warning beware: MAXPARTITIONS bigger than MAXMAXPARTITIONS |
94 | #endif |
95 | |
96 | /* |
97 | * Translate between device numbers and major/disk unit/disk partition. |
98 | */ |
99 | #define DISKUNIT(dev) (minor(dev) / MAXPARTITIONS) |
100 | #define DISKPART(dev) (minor(dev) % MAXPARTITIONS) |
101 | #define MAKEDISKDEV(maj, unit, part) \ |
102 | (makedev((maj), ((unit) * MAXPARTITIONS) + (part))) |
103 | |
104 | #define DISKMAGIC ((u_int32_t)0x82564557) /* The disk magic number */ |
105 | |
106 | #ifndef LOCORE |
107 | struct disklabel { |
108 | u_int32_t d_magic; /* the magic number */ |
109 | u_int16_t d_type; /* drive type */ |
110 | u_int16_t d_subtype; /* controller/d_type specific */ |
111 | char d_typename[16]; /* type name, e.g. "eagle" */ |
112 | |
113 | /* |
114 | * d_packname contains the pack identifier and is returned when |
115 | * the disklabel is read off the disk or in-core copy. |
116 | * d_boot0 and d_boot1 are the (optional) names of the |
117 | * primary (block 0) and secondary (block 1-15) bootstraps |
118 | * as found in /usr/mdec. These are returned when using |
119 | * getdiskbyname(3) to retrieve the values from /etc/disktab. |
120 | */ |
121 | union { |
122 | char un_d_packname[16]; /* pack identifier */ |
123 | struct { |
124 | char *un_d_boot0; /* primary bootstrap name */ |
125 | char *un_d_boot1; /* secondary bootstrap name */ |
126 | } un_b; |
127 | } d_un; |
128 | #define d_packname d_un.un_d_packname |
129 | #define d_boot0 d_un.un_b.un_d_boot0 |
130 | #define d_boot1 d_un.un_b.un_d_boot1 |
131 | |
132 | /* disk geometry: */ |
133 | u_int32_t d_secsize; /* # of bytes per sector */ |
134 | u_int32_t d_nsectors; /* # of data sectors per track */ |
135 | u_int32_t d_ntracks; /* # of tracks per cylinder */ |
136 | u_int32_t d_ncylinders; /* # of data cylinders per unit */ |
137 | u_int32_t d_secpercyl; /* # of data sectors per cylinder */ |
138 | u_int32_t d_secperunit; /* # of data sectors per unit */ |
139 | |
140 | /* |
141 | * Spares (bad sector replacements) below are not counted in |
142 | * d_nsectors or d_secpercyl. Spare sectors are assumed to |
143 | * be physical sectors which occupy space at the end of each |
144 | * track and/or cylinder. |
145 | */ |
146 | u_int16_t d_sparespertrack; /* # of spare sectors per track */ |
147 | u_int16_t d_sparespercyl; /* # of spare sectors per cylinder */ |
148 | /* |
149 | * Alternate cylinders include maintenance, replacement, configuration |
150 | * description areas, etc. |
151 | */ |
152 | u_int32_t d_acylinders; /* # of alt. cylinders per unit */ |
153 | |
154 | /* hardware characteristics: */ |
155 | /* |
156 | * d_interleave, d_trackskew and d_cylskew describe perturbations |
157 | * in the media format used to compensate for a slow controller. |
158 | * Interleave is physical sector interleave, set up by the |
159 | * formatter or controller when formatting. When interleaving is |
160 | * in use, logically adjacent sectors are not physically |
161 | * contiguous, but instead are separated by some number of |
162 | * sectors. It is specified as the ratio of physical sectors |
163 | * traversed per logical sector. Thus an interleave of 1:1 |
164 | * implies contiguous layout, while 2:1 implies that logical |
165 | * sector 0 is separated by one sector from logical sector 1. |
166 | * d_trackskew is the offset of sector 0 on track N relative to |
167 | * sector 0 on track N-1 on the same cylinder. Finally, d_cylskew |
168 | * is the offset of sector 0 on cylinder N relative to sector 0 |
169 | * on cylinder N-1. |
170 | */ |
171 | u_int16_t d_rpm; /* rotational speed */ |
172 | u_int16_t d_interleave; /* hardware sector interleave */ |
173 | u_int16_t d_trackskew; /* sector 0 skew, per track */ |
174 | u_int16_t d_cylskew; /* sector 0 skew, per cylinder */ |
175 | u_int32_t d_headswitch; /* head switch time, usec */ |
176 | u_int32_t d_trkseek; /* track-to-track seek, usec */ |
177 | u_int32_t d_flags; /* generic flags */ |
178 | #define NDDATA 5 |
179 | u_int32_t d_drivedata[NDDATA]; /* drive-type specific information */ |
180 | #define NSPARE 5 |
181 | u_int32_t d_spare[NSPARE]; /* reserved for future use */ |
182 | u_int32_t d_magic2; /* the magic number (again) */ |
183 | u_int16_t d_checksum; /* xor of data incl. partitions */ |
184 | |
185 | /* filesystem and partition information: */ |
186 | u_int16_t d_npartitions; /* number of partitions in following */ |
187 | u_int32_t d_bbsize; /* size of boot area at sn0, bytes */ |
188 | u_int32_t d_sbsize; /* max size of fs superblock, bytes */ |
189 | struct partition { /* the partition table */ |
190 | u_int32_t p_size; /* number of sectors in partition */ |
191 | u_int32_t p_offset; /* starting sector */ |
192 | u_int32_t p_fsize; /* filesystem basic fragment size */ |
193 | u_int8_t p_fstype; /* filesystem type, see below */ |
194 | u_int8_t p_frag; /* filesystem fragments per block */ |
195 | union { |
196 | u_int16_t cpg; /* UFS: FS cylinders per group */ |
197 | u_int16_t sgs; /* LFS: FS segment shift */ |
198 | } __partition_u1; |
199 | #define p_cpg __partition_u1.cpg |
200 | #define p_sgs __partition_u1.sgs |
201 | } d_partitions[MAXPARTITIONS]; /* actually may be more */ |
202 | }; |
203 | #else /* LOCORE */ |
204 | /* |
205 | * offsets for asm boot files. |
206 | */ |
207 | .set d_secsize, 40 |
208 | .set d_nsectors, 44 |
209 | .set d_ntracks, 48 |
210 | .set d_ncylinders, 52 |
211 | .set d_secpercyl, 56 |
212 | .set d_secperunit, 60 |
213 | .set d_end_, 276 /* size of disk label */ |
214 | #endif /* LOCORE */ |
215 | |
216 | /* d_type values: */ |
217 | #define DTYPE_SMD 1 /* SMD, XSMD; VAX hp/up */ |
218 | #define DTYPE_MSCP 2 /* MSCP */ |
219 | #define DTYPE_DEC 3 /* other DEC (rk, rl) */ |
220 | #define DTYPE_SCSI 4 /* SCSI */ |
221 | #define DTYPE_ESDI 5 /* ESDI interface */ |
222 | #define DTYPE_ST506 6 /* ST506 etc. */ |
223 | #define DTYPE_HPIB 7 /* CS/80 on HP-IB */ |
224 | #define DTYPE_HPFL 8 /* HP Fiber-link */ |
225 | #define DTYPE_FLOPPY 10 /* floppy */ |
226 | |
227 | #ifdef DKTYPENAMES |
228 | static const char *dktypenames[] = { |
229 | "unknown" , |
230 | "SMD" , |
231 | "MSCP" , |
232 | "old DEC" , |
233 | "SCSI" , |
234 | "ESDI" , |
235 | "ST506" , |
236 | "HP-IB" , |
237 | "HP-FL" , |
238 | "type 9" , |
239 | "floppy" , |
240 | NULL |
241 | }; |
242 | #define DKMAXTYPES (sizeof(dktypenames) / sizeof(dktypenames[0]) - 1) |
243 | #endif |
244 | |
245 | /* |
246 | * Filesystem type and version. |
247 | * Used to interpret other filesystem-specific |
248 | * per-partition information. |
249 | */ |
250 | #define FS_UNUSED 0 /* unused */ |
251 | #define FS_SWAP 1 /* swap */ |
252 | #define FS_V6 2 /* Sixth Edition */ |
253 | #define FS_V7 3 /* Seventh Edition */ |
254 | #define FS_SYSV 4 /* System V */ |
255 | #define FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */ |
256 | #define FS_V8 6 /* Eighth Edition, 4K blocks */ |
257 | #define FS_BSDFFS 7 /* 4.2BSD fast file system */ |
258 | #define FS_MSDOS 8 /* MSDOS file system */ |
259 | #define FS_BSDLFS 9 /* 4.4BSD log-structured file system */ |
260 | #define FS_OTHER 10 /* in use, but unknown/unsupported */ |
261 | #define FS_HPFS 11 /* OS/2 high-performance file system */ |
262 | #define FS_ISO9660 12 /* ISO 9660, normally CD-ROM */ |
263 | #define FS_BOOT 13 /* partition contains bootstrap */ |
264 | #define FS_ADOS 14 /* AmigaDOS fast file system */ |
265 | #define FS_HFS 15 /* Macintosh HFS */ |
266 | |
267 | #ifdef DKTYPENAMES |
268 | static const char *fstypenames[] = { |
269 | "unused" , |
270 | "swap" , |
271 | "Version 6" , |
272 | "Version 7" , |
273 | "System V" , |
274 | "4.1BSD" , |
275 | "Eighth Edition" , |
276 | "4.2BSD" , |
277 | "MSDOS" , |
278 | "4.4LFS" , |
279 | "unknown" , |
280 | "HPFS" , |
281 | "ISO9660" , |
282 | "boot" , |
283 | "ADOS" , |
284 | "HFS" , |
285 | NULL |
286 | }; |
287 | #define FSMAXTYPES (sizeof(fstypenames) / sizeof(fstypenames[0]) - 1) |
288 | #endif |
289 | |
290 | /* |
291 | * flags shared by various drives: |
292 | */ |
293 | #define D_REMOVABLE 0x01 /* removable media */ |
294 | #define D_ECC 0x02 /* supports ECC */ |
295 | #define D_BADSECT 0x04 /* supports bad sector forw. */ |
296 | #define D_RAMDISK 0x08 /* disk emulator */ |
297 | #define D_CHAIN 0x10 /* can do back-back transfers */ |
298 | |
299 | /* |
300 | * Drive data for SMD. |
301 | */ |
302 | #define d_smdflags d_drivedata[0] |
303 | #define D_SSE 0x1 /* supports skip sectoring */ |
304 | #define d_mindist d_drivedata[1] |
305 | #define d_maxdist d_drivedata[2] |
306 | #define d_sdist d_drivedata[3] |
307 | |
308 | /* |
309 | * Drive data for ST506. |
310 | */ |
311 | #define d_precompcyl d_drivedata[0] |
312 | #define d_gap3 d_drivedata[1] /* used only when formatting */ |
313 | |
314 | /* |
315 | * Drive data for SCSI. |
316 | */ |
317 | #define d_blind d_drivedata[0] |
318 | |
319 | #ifndef LOCORE |
320 | /* |
321 | * Structure used to perform a format or other raw operation, returning |
322 | * data and/or register values. Register identification and format |
323 | * are device- and driver-dependent. |
324 | */ |
325 | struct format_op { |
326 | char *df_buf; |
327 | int df_count; /* value-result */ |
328 | daddr_t df_startblk; |
329 | int df_reg[8]; /* result */ |
330 | }; |
331 | |
332 | /* |
333 | * Structure used internally to retrieve information about a partition |
334 | * on a disk. |
335 | */ |
336 | struct partinfo { |
337 | struct disklabel *disklab; |
338 | struct partition *part; |
339 | }; |
340 | |
341 | /* |
342 | * Disk-specific ioctls. |
343 | */ |
344 | /* get and set disklabel; DIOCGPART used internally */ |
345 | #define DIOCGDINFO _IOR('d', 101, struct disklabel)/* get */ |
346 | #define DIOCSDINFO _IOW('d', 102, struct disklabel)/* set */ |
347 | #define DIOCWDINFO _IOW('d', 103, struct disklabel)/* set, update disk */ |
348 | #define DIOCGPART _IOW('d', 104, struct partinfo) /* get partition */ |
349 | |
350 | /* do format operation, read or write */ |
351 | #define DIOCRFORMAT _IOWR('d', 105, struct format_op) |
352 | #define DIOCWFORMAT _IOWR('d', 106, struct format_op) |
353 | |
354 | #define DIOCSSTEP _IOW('d', 107, int) /* set step rate */ |
355 | #define DIOCSRETRIES _IOW('d', 108, int) /* set # of retries */ |
356 | #define DIOCWLABEL _IOW('d', 109, int) /* write en/disable label */ |
357 | |
358 | #define DIOCSBAD _IOW('d', 110, struct dkbad) /* set kernel dkbad */ |
359 | |
360 | #endif /* LOCORE */ |
361 | |
362 | #if !defined(KERNEL) && !defined(LOCORE) |
363 | |
364 | #include <sys/cdefs.h> |
365 | |
366 | __BEGIN_DECLS |
367 | struct disklabel *getdiskbyname(const char *); |
368 | __END_DECLS |
369 | |
370 | #endif |
371 | |
372 | #endif /* __APPLE_API_OBSOLETE */ |
373 | |
374 | #endif /* ! _SYS_DISKLABEL_H_ */ |
375 | |