![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to disklabel.h CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Net/2] / Net2 / sys|
Return to disklabel.h CVS log | Up to [Net/2] / Net2 / sys |
1.1 root 1: /*
2: * Copyright (c) 1987, 1988 Regents of the University of California.
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * 3. All advertising materials mentioning features or use of this software
14: * must display the following acknowledgement:
15: * This product includes software developed by the University of
16: * California, Berkeley and its contributors.
17: * 4. Neither the name of the University nor the names of its contributors
18: * may be used to endorse or promote products derived from this software
19: * without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31: * SUCH DAMAGE.
32: *
1.1.1.3 ! root 33: * from: @(#)disklabel.h 7.19 (Berkeley) 5/7/91
! 34: * disklabel.h,v 1.5 1993/05/22 09:00:32 deraadt Exp
1.1 root 35: */
36:
1.1.1.3 ! root 37: #ifndef _SYS_DISKLABEL_H_
! 38: #define _SYS_DISKLABEL_H_
! 39:
1.1 root 40: /*
41: * Disk description table, see disktab(5)
42: */
1.1.1.3 ! root 43:
1.1 root 44: #define _PATH_DISKTAB "/etc/disktab"
45: #define DISKTAB "/etc/disktab" /* deprecated */
46:
47: /*
48: * Each disk has a label which includes information about the hardware
49: * disk geometry, filesystem partitions, and drive specific information.
50: * The label is in block 0 or 1, possibly offset from the beginning
51: * to leave room for a bootstrap, etc.
52: */
53:
54: /* XXX these should be defined per controller (or drive) elsewhere, not here! */
55: #ifdef i386
56: #define LABELSECTOR 1 /* sector containing label */
57: #define LABELOFFSET 0 /* offset of label in sector */
58: #endif
59:
60: #ifndef LABELSECTOR
61: #define LABELSECTOR 0 /* sector containing label */
62: #endif
63:
64: #ifndef LABELOFFSET
65: #define LABELOFFSET 64 /* offset of label in sector */
66: #endif
67:
68: #define DISKMAGIC ((u_long) 0x82564557) /* The disk magic number */
69: #ifndef MAXPARTITIONS
70: #define MAXPARTITIONS 8
71: #endif
72:
73:
74: #ifndef LOCORE
75: struct disklabel {
76: u_long d_magic; /* the magic number */
77: short d_type; /* drive type */
78: short d_subtype; /* controller/d_type specific */
79: char d_typename[16]; /* type name, e.g. "eagle" */
80: /*
81: * d_packname contains the pack identifier and is returned when
82: * the disklabel is read off the disk or in-core copy.
83: * d_boot0 and d_boot1 are the (optional) names of the
84: * primary (block 0) and secondary (block 1-15) bootstraps
85: * as found in /usr/mdec. These are returned when using
86: * getdiskbyname(3) to retrieve the values from /etc/disktab.
87: */
88: #if defined(KERNEL) || defined(STANDALONE)
89: char d_packname[16]; /* pack identifier */
90: #else
91: union {
92: char un_d_packname[16]; /* pack identifier */
93: struct {
94: char *un_d_boot0; /* primary bootstrap name */
95: char *un_d_boot1; /* secondary bootstrap name */
96: } un_b;
97: } d_un;
98: #define d_packname d_un.un_d_packname
99: #define d_boot0 d_un.un_b.un_d_boot0
100: #define d_boot1 d_un.un_b.un_d_boot1
101: #endif /* ! KERNEL or STANDALONE */
102: /* disk geometry: */
103: u_long d_secsize; /* # of bytes per sector */
104: u_long d_nsectors; /* # of data sectors per track */
105: u_long d_ntracks; /* # of tracks per cylinder */
106: u_long d_ncylinders; /* # of data cylinders per unit */
107: u_long d_secpercyl; /* # of data sectors per cylinder */
108: u_long d_secperunit; /* # of data sectors per unit */
109: /*
110: * Spares (bad sector replacements) below
111: * are not counted in d_nsectors or d_secpercyl.
112: * Spare sectors are assumed to be physical sectors
113: * which occupy space at the end of each track and/or cylinder.
114: */
115: u_short d_sparespertrack; /* # of spare sectors per track */
116: u_short d_sparespercyl; /* # of spare sectors per cylinder */
117: /*
118: * Alternate cylinders include maintenance, replacement,
119: * configuration description areas, etc.
120: */
121: u_long d_acylinders; /* # of alt. cylinders per unit */
122:
123: /* hardware characteristics: */
124: /*
125: * d_interleave, d_trackskew and d_cylskew describe perturbations
126: * in the media format used to compensate for a slow controller.
127: * Interleave is physical sector interleave, set up by the formatter
128: * or controller when formatting. When interleaving is in use,
129: * logically adjacent sectors are not physically contiguous,
130: * but instead are separated by some number of sectors.
131: * It is specified as the ratio of physical sectors traversed
132: * per logical sector. Thus an interleave of 1:1 implies contiguous
133: * layout, while 2:1 implies that logical sector 0 is separated
134: * by one sector from logical sector 1.
135: * d_trackskew is the offset of sector 0 on track N
136: * relative to sector 0 on track N-1 on the same cylinder.
137: * Finally, d_cylskew is the offset of sector 0 on cylinder N
138: * relative to sector 0 on cylinder N-1.
139: */
140: u_short d_rpm; /* rotational speed */
141: u_short d_interleave; /* hardware sector interleave */
142: u_short d_trackskew; /* sector 0 skew, per track */
143: u_short d_cylskew; /* sector 0 skew, per cylinder */
144: u_long d_headswitch; /* head switch time, usec */
145: u_long d_trkseek; /* track-to-track seek, usec */
146: u_long d_flags; /* generic flags */
147: #define NDDATA 5
148: u_long d_drivedata[NDDATA]; /* drive-type specific information */
149: #define NSPARE 5
150: u_long d_spare[NSPARE]; /* reserved for future use */
151: u_long d_magic2; /* the magic number (again) */
152: u_short d_checksum; /* xor of data incl. partitions */
153:
154: /* filesystem and partition information: */
155: u_short d_npartitions; /* number of partitions in following */
156: u_long d_bbsize; /* size of boot area at sn0, bytes */
157: u_long d_sbsize; /* max size of fs superblock, bytes */
158: struct partition { /* the partition table */
159: u_long p_size; /* number of sectors in partition */
160: u_long p_offset; /* starting sector */
161: u_long p_fsize; /* filesystem basic fragment size */
162: u_char p_fstype; /* filesystem type, see below */
163: u_char p_frag; /* filesystem fragments per block */
164: u_short p_cpg; /* filesystem cylinders per group */
165: } d_partitions[MAXPARTITIONS]; /* actually may be more */
166: };
167: #else LOCORE
168: /*
169: * offsets for asm boot files.
170: */
171: .set d_secsize,40
172: .set d_nsectors,44
173: .set d_ntracks,48
174: .set d_ncylinders,52
175: .set d_secpercyl,56
176: .set d_secperunit,60
177: .set d_end_,276 /* size of disk label */
178: #endif LOCORE
179:
180: /* d_type values: */
181: #define DTYPE_SMD 1 /* SMD, XSMD; VAX hp/up */
182: #define DTYPE_MSCP 2 /* MSCP */
183: #define DTYPE_DEC 3 /* other DEC (rk, rl) */
184: #define DTYPE_SCSI 4 /* SCSI */
185: #define DTYPE_ESDI 5 /* ESDI interface */
186: #define DTYPE_ST506 6 /* ST506 etc. */
187: #define DTYPE_FLOPPY 10 /* floppy */
188:
1.1.1.2 root 189: /* d_subtype values: */
190: #define DSTYPE_INDOSPART 0x8 /* is inside dos partition */
191: #define DSTYPE_DOSPART(s) ((s) & 3) /* dos partition number */
192: #define DSTYPE_GEOMETRY 0x10 /* drive params in label */
193:
1.1 root 194: #ifdef DKTYPENAMES
195: static char *dktypenames[] = {
196: "unknown",
197: "SMD",
198: "MSCP",
199: "old DEC",
200: "SCSI",
201: "ESDI",
202: "ST506",
203: "type 7",
204: "type 8",
205: "type 9",
206: "floppy",
207: 0
208: };
209: #define DKMAXTYPES (sizeof(dktypenames) / sizeof(dktypenames[0]) - 1)
210: #endif
211:
212: /*
213: * Filesystem type and version.
214: * Used to interpret other filesystem-specific
215: * per-partition information.
216: */
217: #define FS_UNUSED 0 /* unused */
218: #define FS_SWAP 1 /* swap */
219: #define FS_V6 2 /* Sixth Edition */
220: #define FS_V7 3 /* Seventh Edition */
221: #define FS_SYSV 4 /* System V */
222: #define FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */
223: #define FS_V8 6 /* Eighth Edition, 4K blocks */
224: #define FS_BSDFFS 7 /* 4.2BSD fast file system */
225: #define FS_MSDOS 8 /* MSDOS file system */
226:
227: #ifdef DKTYPENAMES
228: static char *fstypenames[] = {
229: "unused",
230: "swap",
231: "Version 6",
232: "Version 7",
233: "System V",
234: "4.1BSD",
235: "Eighth Edition",
236: "4.2BSD",
237: "MSDOS",
238: 0
239: };
240: #define FSMAXTYPES (sizeof(fstypenames) / sizeof(fstypenames[0]) - 1)
241: #endif
242:
243: /*
244: * flags shared by various drives:
245: */
246: #define D_REMOVABLE 0x01 /* removable media */
247: #define D_ECC 0x02 /* supports ECC */
248: #define D_BADSECT 0x04 /* supports bad sector forw. */
249: #define D_RAMDISK 0x08 /* disk emulator */
250: #define D_CHAIN 0x10 /* can do back-back transfers */
1.1.1.2 root 251: #define D_DOSPART 0x20 /* within MSDOS partition */
1.1 root 252:
253: /*
254: * Drive data for SMD.
255: */
256: #define d_smdflags d_drivedata[0]
257: #define D_SSE 0x1 /* supports skip sectoring */
258: #define d_mindist d_drivedata[1]
259: #define d_maxdist d_drivedata[2]
260: #define d_sdist d_drivedata[3]
261:
262: /*
263: * Drive data for ST506.
264: */
265: #define d_precompcyl d_drivedata[0]
266: #define d_gap3 d_drivedata[1] /* used only when formatting */
267:
268: /*
269: * Drive data for SCSI.
270: */
271: #define d_blind d_drivedata[0]
272:
273: #ifndef LOCORE
274: /*
275: * Structure used to perform a format
276: * or other raw operation, returning data
277: * and/or register values.
278: * Register identification and format
279: * are device- and driver-dependent.
280: */
281: struct format_op {
282: char *df_buf;
283: int df_count; /* value-result */
284: daddr_t df_startblk;
285: int df_reg[8]; /* result */
286: };
287:
288: /*
289: * Structure used internally to retrieve
290: * information about a partition on a disk.
291: */
292: struct partinfo {
293: struct disklabel *disklab;
294: struct partition *part;
295: };
296:
1.1.1.3 ! root 297: #ifdef i386
1.1.1.2 root 298: /* DOS partition table -- located in boot block */
299:
300: #define DOSBBSECTOR 0 /* DOS boot block relative sector number */
301: #define DOSPARTOFF 446
302: #define NDOSPART 4
303:
304: struct dos_partition {
305: unsigned char dp_flag; /* bootstrap flags */
306: unsigned char dp_shd; /* starting head */
307: unsigned char dp_ssect; /* starting sector */
308: unsigned char dp_scyl; /* starting cylinder */
309: unsigned char dp_typ; /* partition type */
310: #define DOSPTYP_386BSD 0xa5 /* 386BSD partition type */
311: unsigned char dp_ehd; /* end head */
312: unsigned char dp_esect; /* end sector */
313: unsigned char dp_ecyl; /* end cylinder */
314: unsigned long dp_start; /* absolute starting sector number */
315: unsigned long dp_size; /* partition size in sectors */
316: } dos_partitions[NDOSPART];
317:
1.1.1.3 ! root 318: #include <sys/dkbad.h>
! 319: struct cpu_disklabel {
! 320: struct dos_partition dosparts[NDOSPART];
! 321: struct dkbad bad;
! 322: };
! 323:
! 324: #endif /* i386 */
! 325:
! 326: #if defined(hp300) || defined(mac) || defined(vax)
! 327: struct cpu_disklabel {
! 328: };
! 329: #endif
! 330:
1.1.1.2 root 331: #define DPSECT(s) ((s) & 0x3f) /* isolate relevant bits of sector */
332: #define DPCYL(c, s) ((c) + (((s) & 0xc0)<<2)) /* and those that are cylinder */
333:
1.1 root 334: /*
335: * Disk-specific ioctls.
336: */
337: /* get and set disklabel; DIOCGPART used internally */
338: #define DIOCGDINFO _IOR('d', 101, struct disklabel)/* get */
339: #define DIOCSDINFO _IOW('d', 102, struct disklabel)/* set */
340: #define DIOCWDINFO _IOW('d', 103, struct disklabel)/* set, update disk */
341: #define DIOCGPART _IOW('d', 104, struct partinfo) /* get partition */
342:
343: /* do format operation, read or write */
344: #define DIOCRFORMAT _IOWR('d', 105, struct format_op)
345: #define DIOCWFORMAT _IOWR('d', 106, struct format_op)
346:
347: #define DIOCSSTEP _IOW('d', 107, int) /* set step rate */
348: #define DIOCSRETRIES _IOW('d', 108, int) /* set # of retries */
349: #define DIOCWLABEL _IOW('d', 109, int) /* write en/disable label */
350:
351: #define DIOCSBAD _IOW('d', 110, struct dkbad) /* set kernel dkbad */
352:
1.1.1.2 root 353: #if defined(KERNEL)
354:
1.1.1.3 ! root 355: #ifdef i386
! 356: int bounds_check_with_label __P((struct buf *, struct disklabel *, int));
! 357: #endif
1.1.1.2 root 358:
1.1.1.3 ! root 359: void diskerr __P((struct buf *, char *, char *, int, int, struct disklabel *));
! 360: void disksort __P((struct buf *, struct buf *));
! 361: int dkcksum __P((struct disklabel *));
! 362:
! 363: int setdisklabel __P((struct disklabel *, struct disklabel *, u_long,
! 364: struct cpu_disklabel *));
! 365: int cpu_setdisklabel __P((struct disklabel *, struct disklabel *, u_long,
! 366: struct cpu_disklabel *));
! 367:
! 368: char *readdisklabel __P((int, int (*)(), struct disklabel *,
! 369: struct cpu_disklabel *));
! 370: char *cpu_readdisklabel __P((int, int (*)(), struct disklabel *,
! 371: struct cpu_disklabel *));
! 372:
! 373: int writedisklabel __P((int, int (*)(), struct disklabel *,
! 374: struct cpu_disklabel *));
! 375: int cpu_writedisklabel __P((int, int (*)(), struct disklabel *,
! 376: struct cpu_disklabel *));
1.1.1.2 root 377:
378: #endif
1.1 root 379: #endif LOCORE
380:
381: #if !defined(KERNEL) && !defined(LOCORE)
382:
383: #include <sys/cdefs.h>
384:
385: __BEGIN_DECLS
386: struct disklabel *getdiskbyname __P((const char *));
387: __END_DECLS
388:
389: #endif
1.1.1.3 ! root 390:
! 391: #endif /* !_SYS_DISKLABEL_H_ */
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.