1*199767f8SToomas Soome /*-
2*199767f8SToomas Soome * Copyright (c) 1987, 1988, 1993
3*199767f8SToomas Soome * The Regents of the University of California. All rights reserved.
4*199767f8SToomas Soome *
5*199767f8SToomas Soome * Redistribution and use in source and binary forms, with or without
6*199767f8SToomas Soome * modification, are permitted provided that the following conditions
7*199767f8SToomas Soome * are met:
8*199767f8SToomas Soome * 1. Redistributions of source code must retain the above copyright
9*199767f8SToomas Soome * notice, this list of conditions and the following disclaimer.
10*199767f8SToomas Soome * 2. Redistributions in binary form must reproduce the above copyright
11*199767f8SToomas Soome * notice, this list of conditions and the following disclaimer in the
12*199767f8SToomas Soome * documentation and/or other materials provided with the distribution.
13*199767f8SToomas Soome * 4. Neither the name of the University nor the names of its contributors
14*199767f8SToomas Soome * may be used to endorse or promote products derived from this software
15*199767f8SToomas Soome * without specific prior written permission.
16*199767f8SToomas Soome *
17*199767f8SToomas Soome * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18*199767f8SToomas Soome * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19*199767f8SToomas Soome * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20*199767f8SToomas Soome * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21*199767f8SToomas Soome * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22*199767f8SToomas Soome * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23*199767f8SToomas Soome * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24*199767f8SToomas Soome * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25*199767f8SToomas Soome * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26*199767f8SToomas Soome * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27*199767f8SToomas Soome * SUCH DAMAGE.
28*199767f8SToomas Soome *
29*199767f8SToomas Soome * @(#)disklabel.h 8.2 (Berkeley) 7/10/94
30*199767f8SToomas Soome * $FreeBSD$
31*199767f8SToomas Soome */
32*199767f8SToomas Soome
33*199767f8SToomas Soome #ifndef _SYS_DISKLABEL_H_
34*199767f8SToomas Soome #define _SYS_DISKLABEL_H_
35*199767f8SToomas Soome
36*199767f8SToomas Soome #ifndef _KERNEL
37*199767f8SToomas Soome #include <sys/types.h>
38*199767f8SToomas Soome #endif
39*199767f8SToomas Soome #include <sys/ioccom.h>
40*199767f8SToomas Soome
41*199767f8SToomas Soome /*
42*199767f8SToomas Soome * Disk description table, see disktab(5)
43*199767f8SToomas Soome */
44*199767f8SToomas Soome #define _PATH_DISKTAB "/etc/disktab"
45*199767f8SToomas Soome
46*199767f8SToomas Soome /*
47*199767f8SToomas Soome * Each disk has a label which includes information about the hardware
48*199767f8SToomas Soome * disk geometry, filesystem partitions, and drive specific information.
49*199767f8SToomas Soome * The label is in block 0 or 1, possibly offset from the beginning
50*199767f8SToomas Soome * to leave room for a bootstrap, etc.
51*199767f8SToomas Soome */
52*199767f8SToomas Soome
53*199767f8SToomas Soome /* XXX these should be defined per controller (or drive) elsewhere, not here! */
54*199767f8SToomas Soome #if defined(__i386__) || defined(__amd64__) || defined(__arm__) || \
55*199767f8SToomas Soome defined(__powerpc__) || defined(__mips__)
56*199767f8SToomas Soome #define LABELSECTOR 1 /* sector containing label */
57*199767f8SToomas Soome #define LABELOFFSET 0 /* offset of label in sector */
58*199767f8SToomas Soome #endif
59*199767f8SToomas Soome
60*199767f8SToomas Soome #define DISKMAGIC ((u_int32_t)0x82564557) /* The disk magic number */
61*199767f8SToomas Soome #ifndef MAXPARTITIONS
62*199767f8SToomas Soome #define MAXPARTITIONS 8
63*199767f8SToomas Soome #endif
64*199767f8SToomas Soome
65*199767f8SToomas Soome /* Size of bootblock area in sector-size neutral bytes */
66*199767f8SToomas Soome #define BBSIZE 8192
67*199767f8SToomas Soome
68*199767f8SToomas Soome #define LABEL_PART 2 /* partition containing label */
69*199767f8SToomas Soome #define RAW_PART 2 /* partition containing whole disk */
70*199767f8SToomas Soome #define SWAP_PART 1 /* partition normally containing swap */
71*199767f8SToomas Soome
72*199767f8SToomas Soome struct disklabel {
73*199767f8SToomas Soome u_int32_t d_magic; /* the magic number */
74*199767f8SToomas Soome u_int16_t d_type; /* drive type */
75*199767f8SToomas Soome u_int16_t d_subtype; /* controller/d_type specific */
76*199767f8SToomas Soome char d_typename[16]; /* type name, e.g. "eagle" */
77*199767f8SToomas Soome
78*199767f8SToomas Soome char d_packname[16]; /* pack identifier */
79*199767f8SToomas Soome
80*199767f8SToomas Soome /* disk geometry: */
81*199767f8SToomas Soome u_int32_t d_secsize; /* # of bytes per sector */
82*199767f8SToomas Soome u_int32_t d_nsectors; /* # of data sectors per track */
83*199767f8SToomas Soome u_int32_t d_ntracks; /* # of tracks per cylinder */
84*199767f8SToomas Soome u_int32_t d_ncylinders; /* # of data cylinders per unit */
85*199767f8SToomas Soome u_int32_t d_secpercyl; /* # of data sectors per cylinder */
86*199767f8SToomas Soome u_int32_t d_secperunit; /* # of data sectors per unit */
87*199767f8SToomas Soome
88*199767f8SToomas Soome /*
89*199767f8SToomas Soome * Spares (bad sector replacements) below are not counted in
90*199767f8SToomas Soome * d_nsectors or d_secpercyl. Spare sectors are assumed to
91*199767f8SToomas Soome * be physical sectors which occupy space at the end of each
92*199767f8SToomas Soome * track and/or cylinder.
93*199767f8SToomas Soome */
94*199767f8SToomas Soome u_int16_t d_sparespertrack; /* # of spare sectors per track */
95*199767f8SToomas Soome u_int16_t d_sparespercyl; /* # of spare sectors per cylinder */
96*199767f8SToomas Soome /*
97*199767f8SToomas Soome * Alternate cylinders include maintenance, replacement, configuration
98*199767f8SToomas Soome * description areas, etc.
99*199767f8SToomas Soome */
100*199767f8SToomas Soome u_int32_t d_acylinders; /* # of alt. cylinders per unit */
101*199767f8SToomas Soome
102*199767f8SToomas Soome /* hardware characteristics: */
103*199767f8SToomas Soome /*
104*199767f8SToomas Soome * d_interleave, d_trackskew and d_cylskew describe perturbations
105*199767f8SToomas Soome * in the media format used to compensate for a slow controller.
106*199767f8SToomas Soome * Interleave is physical sector interleave, set up by the
107*199767f8SToomas Soome * formatter or controller when formatting. When interleaving is
108*199767f8SToomas Soome * in use, logically adjacent sectors are not physically
109*199767f8SToomas Soome * contiguous, but instead are separated by some number of
110*199767f8SToomas Soome * sectors. It is specified as the ratio of physical sectors
111*199767f8SToomas Soome * traversed per logical sector. Thus an interleave of 1:1
112*199767f8SToomas Soome * implies contiguous layout, while 2:1 implies that logical
113*199767f8SToomas Soome * sector 0 is separated by one sector from logical sector 1.
114*199767f8SToomas Soome * d_trackskew is the offset of sector 0 on track N relative to
115*199767f8SToomas Soome * sector 0 on track N-1 on the same cylinder. Finally, d_cylskew
116*199767f8SToomas Soome * is the offset of sector 0 on cylinder N relative to sector 0
117*199767f8SToomas Soome * on cylinder N-1.
118*199767f8SToomas Soome */
119*199767f8SToomas Soome u_int16_t d_rpm; /* rotational speed */
120*199767f8SToomas Soome u_int16_t d_interleave; /* hardware sector interleave */
121*199767f8SToomas Soome u_int16_t d_trackskew; /* sector 0 skew, per track */
122*199767f8SToomas Soome u_int16_t d_cylskew; /* sector 0 skew, per cylinder */
123*199767f8SToomas Soome u_int32_t d_headswitch; /* head switch time, usec */
124*199767f8SToomas Soome u_int32_t d_trkseek; /* track-to-track seek, usec */
125*199767f8SToomas Soome u_int32_t d_flags; /* generic flags */
126*199767f8SToomas Soome #define NDDATA 5
127*199767f8SToomas Soome u_int32_t d_drivedata[NDDATA]; /* drive-type specific information */
128*199767f8SToomas Soome #define NSPARE 5
129*199767f8SToomas Soome u_int32_t d_spare[NSPARE]; /* reserved for future use */
130*199767f8SToomas Soome u_int32_t d_magic2; /* the magic number (again) */
131*199767f8SToomas Soome u_int16_t d_checksum; /* xor of data incl. partitions */
132*199767f8SToomas Soome
133*199767f8SToomas Soome /* filesystem and partition information: */
134*199767f8SToomas Soome u_int16_t d_npartitions; /* number of partitions in following */
135*199767f8SToomas Soome u_int32_t d_bbsize; /* size of boot area at sn0, bytes */
136*199767f8SToomas Soome u_int32_t d_sbsize; /* max size of fs superblock, bytes */
137*199767f8SToomas Soome struct partition { /* the partition table */
138*199767f8SToomas Soome u_int32_t p_size; /* number of sectors in partition */
139*199767f8SToomas Soome u_int32_t p_offset; /* starting sector */
140*199767f8SToomas Soome u_int32_t p_fsize; /* filesystem basic fragment size */
141*199767f8SToomas Soome u_int8_t p_fstype; /* filesystem type, see below */
142*199767f8SToomas Soome u_int8_t p_frag; /* filesystem fragments per block */
143*199767f8SToomas Soome u_int16_t p_cpg; /* filesystem cylinders per group */
144*199767f8SToomas Soome } d_partitions[MAXPARTITIONS]; /* actually may be more */
145*199767f8SToomas Soome };
146*199767f8SToomas Soome
147*199767f8SToomas Soome #ifdef CTASSERT
148*199767f8SToomas Soome CTASSERT(sizeof(struct disklabel) == 148 + MAXPARTITIONS * 16);
149*199767f8SToomas Soome #endif
150*199767f8SToomas Soome
151*199767f8SToomas Soome static __inline u_int16_t dkcksum(struct disklabel *lp);
152*199767f8SToomas Soome static __inline u_int16_t
dkcksum(struct disklabel * lp)153*199767f8SToomas Soome dkcksum(struct disklabel *lp)
154*199767f8SToomas Soome {
155*199767f8SToomas Soome u_int16_t *start, *end;
156*199767f8SToomas Soome u_int16_t sum = 0;
157*199767f8SToomas Soome
158*199767f8SToomas Soome start = (u_int16_t *)lp;
159*199767f8SToomas Soome end = (u_int16_t *)&lp->d_partitions[lp->d_npartitions];
160*199767f8SToomas Soome while (start < end)
161*199767f8SToomas Soome sum ^= *start++;
162*199767f8SToomas Soome return (sum);
163*199767f8SToomas Soome }
164*199767f8SToomas Soome
165*199767f8SToomas Soome
166*199767f8SToomas Soome /* d_type values: */
167*199767f8SToomas Soome #define DTYPE_SMD 1 /* SMD, XSMD; VAX hp/up */
168*199767f8SToomas Soome #define DTYPE_MSCP 2 /* MSCP */
169*199767f8SToomas Soome #define DTYPE_DEC 3 /* other DEC (rk, rl) */
170*199767f8SToomas Soome #define DTYPE_SCSI 4 /* SCSI */
171*199767f8SToomas Soome #define DTYPE_ESDI 5 /* ESDI interface */
172*199767f8SToomas Soome #define DTYPE_ST506 6 /* ST506 etc. */
173*199767f8SToomas Soome #define DTYPE_HPIB 7 /* CS/80 on HP-IB */
174*199767f8SToomas Soome #define DTYPE_HPFL 8 /* HP Fiber-link */
175*199767f8SToomas Soome #define DTYPE_FLOPPY 10 /* floppy */
176*199767f8SToomas Soome #define DTYPE_CCD 11 /* concatenated disk */
177*199767f8SToomas Soome #define DTYPE_VINUM 12 /* vinum volume */
178*199767f8SToomas Soome #define DTYPE_DOC2K 13 /* Msys DiskOnChip */
179*199767f8SToomas Soome #define DTYPE_RAID 14 /* CMU RAIDFrame */
180*199767f8SToomas Soome #define DTYPE_JFS2 16 /* IBM JFS 2 */
181*199767f8SToomas Soome
182*199767f8SToomas Soome #ifdef DKTYPENAMES
183*199767f8SToomas Soome static const char *dktypenames[] = {
184*199767f8SToomas Soome "unknown",
185*199767f8SToomas Soome "SMD",
186*199767f8SToomas Soome "MSCP",
187*199767f8SToomas Soome "old DEC",
188*199767f8SToomas Soome "SCSI",
189*199767f8SToomas Soome "ESDI",
190*199767f8SToomas Soome "ST506",
191*199767f8SToomas Soome "HP-IB",
192*199767f8SToomas Soome "HP-FL",
193*199767f8SToomas Soome "type 9",
194*199767f8SToomas Soome "floppy",
195*199767f8SToomas Soome "CCD",
196*199767f8SToomas Soome "Vinum",
197*199767f8SToomas Soome "DOC2K",
198*199767f8SToomas Soome "Raid",
199*199767f8SToomas Soome "?",
200*199767f8SToomas Soome "jfs",
201*199767f8SToomas Soome NULL
202*199767f8SToomas Soome };
203*199767f8SToomas Soome #define DKMAXTYPES (sizeof(dktypenames) / sizeof(dktypenames[0]) - 1)
204*199767f8SToomas Soome #endif
205*199767f8SToomas Soome
206*199767f8SToomas Soome /*
207*199767f8SToomas Soome * Filesystem type and version.
208*199767f8SToomas Soome * Used to interpret other filesystem-specific
209*199767f8SToomas Soome * per-partition information.
210*199767f8SToomas Soome */
211*199767f8SToomas Soome #define FS_UNUSED 0 /* unused */
212*199767f8SToomas Soome #define FS_SWAP 1 /* swap */
213*199767f8SToomas Soome #define FS_V6 2 /* Sixth Edition */
214*199767f8SToomas Soome #define FS_V7 3 /* Seventh Edition */
215*199767f8SToomas Soome #define FS_SYSV 4 /* System V */
216*199767f8SToomas Soome #define FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */
217*199767f8SToomas Soome #define FS_V8 6 /* Eighth Edition, 4K blocks */
218*199767f8SToomas Soome #define FS_BSDFFS 7 /* 4.2BSD fast filesystem */
219*199767f8SToomas Soome #define FS_MSDOS 8 /* MSDOS filesystem */
220*199767f8SToomas Soome #define FS_BSDLFS 9 /* 4.4BSD log-structured filesystem */
221*199767f8SToomas Soome #define FS_OTHER 10 /* in use, but unknown/unsupported */
222*199767f8SToomas Soome #define FS_HPFS 11 /* OS/2 high-performance filesystem */
223*199767f8SToomas Soome #define FS_ISO9660 12 /* ISO 9660, normally CD-ROM */
224*199767f8SToomas Soome #define FS_BOOT 13 /* partition contains bootstrap */
225*199767f8SToomas Soome #define FS_VINUM 14 /* Vinum drive */
226*199767f8SToomas Soome #define FS_RAID 15 /* RAIDFrame drive */
227*199767f8SToomas Soome #define FS_FILECORE 16 /* Acorn Filecore Filing System */
228*199767f8SToomas Soome #define FS_EXT2FS 17 /* ext2fs */
229*199767f8SToomas Soome #define FS_NTFS 18 /* Windows/NT file system */
230*199767f8SToomas Soome #define FS_CCD 20 /* concatenated disk component */
231*199767f8SToomas Soome #define FS_JFS2 21 /* IBM JFS2 */
232*199767f8SToomas Soome #define FS_HAMMER 22 /* DragonFlyBSD Hammer FS */
233*199767f8SToomas Soome #define FS_HAMMER2 23 /* DragonFlyBSD Hammer2 FS */
234*199767f8SToomas Soome #define FS_UDF 24 /* UDF */
235*199767f8SToomas Soome #define FS_EFS 26 /* SGI's Extent File system */
236*199767f8SToomas Soome #define FS_ZFS 27 /* Sun's ZFS */
237*199767f8SToomas Soome
238*199767f8SToomas Soome #ifdef FSTYPENAMES
239*199767f8SToomas Soome static const char *fstypenames[] = {
240*199767f8SToomas Soome "unused",
241*199767f8SToomas Soome "swap",
242*199767f8SToomas Soome "Version 6",
243*199767f8SToomas Soome "Version 7",
244*199767f8SToomas Soome "System V",
245*199767f8SToomas Soome "4.1BSD",
246*199767f8SToomas Soome "Eighth Edition",
247*199767f8SToomas Soome "4.2BSD",
248*199767f8SToomas Soome "MSDOS",
249*199767f8SToomas Soome "4.4LFS",
250*199767f8SToomas Soome "unknown",
251*199767f8SToomas Soome "HPFS",
252*199767f8SToomas Soome "ISO9660",
253*199767f8SToomas Soome "boot",
254*199767f8SToomas Soome "vinum",
255*199767f8SToomas Soome "raid",
256*199767f8SToomas Soome "Filecore",
257*199767f8SToomas Soome "EXT2FS",
258*199767f8SToomas Soome "NTFS",
259*199767f8SToomas Soome "?",
260*199767f8SToomas Soome "ccd",
261*199767f8SToomas Soome "jfs",
262*199767f8SToomas Soome "HAMMER",
263*199767f8SToomas Soome "HAMMER2",
264*199767f8SToomas Soome "UDF",
265*199767f8SToomas Soome "?",
266*199767f8SToomas Soome "EFS",
267*199767f8SToomas Soome "ZFS",
268*199767f8SToomas Soome "?",
269*199767f8SToomas Soome "?",
270*199767f8SToomas Soome NULL
271*199767f8SToomas Soome };
272*199767f8SToomas Soome #define FSMAXTYPES (sizeof(fstypenames) / sizeof(fstypenames[0]) - 1)
273*199767f8SToomas Soome #endif
274*199767f8SToomas Soome
275*199767f8SToomas Soome /*
276*199767f8SToomas Soome * flags shared by various drives:
277*199767f8SToomas Soome */
278*199767f8SToomas Soome #define D_REMOVABLE 0x01 /* removable media */
279*199767f8SToomas Soome #define D_ECC 0x02 /* supports ECC */
280*199767f8SToomas Soome #define D_BADSECT 0x04 /* supports bad sector forw. */
281*199767f8SToomas Soome #define D_RAMDISK 0x08 /* disk emulator */
282*199767f8SToomas Soome #define D_CHAIN 0x10 /* can do back-back transfers */
283*199767f8SToomas Soome
284*199767f8SToomas Soome /*
285*199767f8SToomas Soome * NB: <sys/disk.h> defines ioctls from 'd'/128 and up.
286*199767f8SToomas Soome */
287*199767f8SToomas Soome
288*199767f8SToomas Soome /*
289*199767f8SToomas Soome * Functions for proper encoding/decoding of struct disklabel into/from
290*199767f8SToomas Soome * bytestring.
291*199767f8SToomas Soome */
292*199767f8SToomas Soome void bsd_partition_le_dec(u_char *ptr, struct partition *d);
293*199767f8SToomas Soome int bsd_disklabel_le_dec(u_char *ptr, struct disklabel *d, int maxpart);
294*199767f8SToomas Soome void bsd_partition_le_enc(u_char *ptr, struct partition *d);
295*199767f8SToomas Soome void bsd_disklabel_le_enc(u_char *ptr, struct disklabel *d);
296*199767f8SToomas Soome
297*199767f8SToomas Soome #ifndef _KERNEL
298*199767f8SToomas Soome __BEGIN_DECLS
299*199767f8SToomas Soome struct disklabel *getdiskbyname(const char *);
300*199767f8SToomas Soome __END_DECLS
301*199767f8SToomas Soome #endif
302*199767f8SToomas Soome
303*199767f8SToomas Soome #endif /* !_SYS_DISKLABEL_H_ */
304