2 * Copyright (c) 2007 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * Copyright (c) 1987, 1993
36 * The Regents of the University of California. All rights reserved.
38 * This code is derived from software contributed to Berkeley by
39 * Symmetric Computer Systems.
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
44 * 1. Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in the
48 * documentation and/or other materials provided with the distribution.
49 * 3. Neither the name of the University nor the names of its contributors
50 * may be used to endorse or promote products derived from this software
51 * without specific prior written permission.
53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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
65 * @(#)disklabel.c 1.2 (Symmetric) 11/28/85
66 * @(#)disklabel.c 8.2 (Berkeley) 1/7/94
67 * $FreeBSD: src/sbin/disklabel/disklabel.c,v 1.28.2.15 2003/01/24 16:18:16 des Exp $
70 #include <sys/param.h>
75 #include <sys/disklabel64.h>
76 #include <sys/diskslice.h>
77 #include <sys/diskmbr.h>
78 #include <sys/dtype.h>
79 #include <sys/sysctl.h>
83 #include <vfs/ufs/dinode.h>
84 #include <vfs/ufs/fs.h>
97 #include "pathnames.h"
99 extern uint32_t crc32(const void *buf, size_t size);
101 static void makelabel(const char *, const char *, struct disklabel64 *);
102 static int writelabel(int, struct disklabel64 *);
103 static void l_perror(const char *);
104 static void display(FILE *, const struct disklabel64 *);
105 static int edit(struct disklabel64 *, int);
106 static int editit(void);
107 static char *skip(char *);
108 static char *word(char *);
109 static int parse_field_val(char **, char **, u_int64_t *, int);
110 static int getasciilabel(FILE *, struct disklabel64 *);
111 static int getasciipartspec(char *, struct disklabel64 *, int, int, uint32_t);
112 static int getasciipartuuid(char *, struct disklabel64 *, int, int, uint32_t);
113 static int checklabel(struct disklabel64 *);
114 static void Warning(const char *, ...) __printflike(1, 2);
115 static void usage(void);
116 static struct disklabel64 *getvirginlabel(void);
117 static struct disklabel64 *readlabel(int);
118 static struct disklabel64 *makebootarea(int);
120 #define DEFEDITOR _PATH_VI
121 #define streq(a,b) (strcmp(a,b) == 0)
124 static char *specname;
125 static char tmpfil[] = PATH_TMPFILE;
127 static struct disklabel64 lab;
129 #define MAX_PART ('z')
130 #define MAX_NUM_PARTS (1 + MAX_PART - 'a')
131 static char part_size_type[MAX_NUM_PARTS];
132 static char part_offset_type[MAX_NUM_PARTS];
133 static int part_set[MAX_NUM_PARTS];
135 static int installboot; /* non-zero if we should install a boot program */
136 static int boot1size;
137 static int boot1lsize;
138 static int boot2size;
139 static char *boot1buf;
140 static char *boot2buf;
141 static char *boot1path;
142 static char *boot2path;
145 UNSPEC, EDIT, NOWRITE, READ, RESTORE, WRITE, WRITEABLE, WRITEBOOT
150 static int disable_write; /* set to disable writing to disk label */
154 #define OPTIONS "BNRWb:denrs:Vw"
156 #define OPTIONS "BNRWb:enrs:Vw"
160 main(int argc, char *argv[])
162 struct disklabel64 *lp;
164 int ch, f = 0, flag, error = 0;
165 const char *name = NULL;
166 const char *dtype = NULL;
168 while ((ch = getopt(argc, argv, OPTIONS)) != -1)
238 dkname = getdevpath(argv[0], 0);
240 f = open(specname, op == READ ? O_RDONLY : O_RDWR);
242 err(4, "%s", specname);
258 if (ioctl(f, DIOCWLABEL, (char *)&flag) < 0)
259 err(4, "ioctl DIOCWLABEL");
267 error = checklabel(lp);
271 if (installboot && argc == 3) {
272 makelabel(argv[2], 0, &lab);
276 * We only called makelabel() for its side effect
277 * of setting the bootstrap file names. Discard
278 * all changes to `lab' so that all values in the
279 * final label come from the ASCII label.
281 bzero((char *)&lab, sizeof(lab));
285 if (!(t = fopen(argv[1], "r")))
286 err(4, "%s", argv[1]);
287 if (!getasciilabel(t, &lab))
289 lp = makebootarea(f);
290 bcopy(&lab.d_magic, &lp->d_magic,
291 sizeof(lab) - offsetof(struct disklabel64, d_magic));
292 error = writelabel(f, lp);
306 makelabel(dtype, name, &lab);
307 lp = makebootarea(f);
308 bcopy(&lab.d_magic, &lp->d_magic,
309 sizeof(lab) - offsetof(struct disklabel64, d_magic));
310 if (checklabel(lp) == 0)
311 error = writelabel(f, lp);
316 if (ioctl(f, DIOCWLABEL, (char *)&flag) < 0)
317 err(4, "ioctl DIOCWLABEL");
322 struct disklabel64 tlab;
327 makelabel(argv[1], 0, &lab);
328 lp = makebootarea(f);
329 bcopy(&tlab.d_magic, &lp->d_magic,
330 sizeof(tlab) - offsetof(struct disklabel64, d_magic));
331 if (checklabel(lp) == 0)
332 error = writelabel(f, lp);
340 * Construct a prototype disklabel from /etc/disktab. As a side
341 * effect, set the names of the primary and secondary boot files
345 makelabel(const char *type, const char *name, struct disklabel64 *lp)
347 struct disklabel64 *dp;
349 if (strcmp(type, "auto") == 0)
350 dp = getvirginlabel();
352 errx(1, "no disktab(5) support yet; only 'auto' allowed");
356 * NOTE: boot control files may no longer be specified in disktab.
359 strlcpy((char *)lp->d_packname, name, sizeof(lp->d_packname));
363 writelabel(int f, struct disklabel64 *lp)
365 struct disklabel64 *blp;
371 lpsize = offsetof(struct disklabel64, d_partitions[lp->d_npartitions]);
372 lpcrcsize = lpsize - offsetof(struct disklabel64, d_magic);
375 Warning("write to disk label suppressed - label was as follows:");
379 lp->d_magic = DISKMAGIC64;
381 lp->d_crc = crc32(&lp->d_magic, lpcrcsize);
384 * Make sure the boot area is not too large
387 int lpbsize = (int)(lp->d_pbase - lp->d_bbase);
388 if (lp->d_pbase == 0) {
389 errx(1, "no space was set aside in "
390 "the disklabel for boot2!");
392 if (boot2size > lpbsize) {
393 errx(1, "label did not reserve enough "
394 "space for boot! %d/%d",
400 * First set the kernel disk label,
401 * then write a label to the raw disk.
402 * If the SDINFO ioctl fails because it is
403 * unimplemented, keep going; otherwise, the kernel
404 * consistency checks may prevent us from changing
405 * the current (in-core) label.
407 if (ioctl(f, DIOCSDINFO64, lp) < 0 &&
408 errno != ENODEV && errno != ENOTTY) {
409 l_perror("ioctl DIOCSDINFO");
412 lseek(f, (off_t)0, SEEK_SET);
415 * The disklabel embeds areas which we may not
416 * have wanted to change. Merge those areas in
419 blp = makebootarea(f);
421 bcopy(&lp->d_magic, &blp->d_magic,
423 offsetof(struct disklabel64, d_magic));
427 * write enable label sector before write
428 * (if necessary), disable after writing.
431 if (ioctl(f, DIOCWLABEL, &flag) < 0)
432 warn("ioctl DIOCWLABEL");
434 r = write(f, boot1buf, boot1lsize);
435 if (r != (ssize_t)boot1lsize) {
440 * Output the remainder of the disklabel
443 lseek(f, lp->d_bbase, 0);
444 r = write(f, boot2buf, boot2size);
445 if (r != boot2size) {
451 ioctl(f, DIOCWLABEL, &flag);
452 } else if (ioctl(f, DIOCWDINFO64, lp) < 0) {
453 l_perror("ioctl DIOCWDINFO64");
461 l_perror(const char *s)
466 warnx("%s: no disk label on disk;", s);
467 fprintf(stderr, "add \"-r\" to install initial label\n");
471 warnx("%s: label magic number or checksum is wrong!", s);
472 fprintf(stderr, "(disklabel or kernel is out of date?)\n");
476 warnx("%s: open partition would move or shrink", s);
480 warnx("%s: the disk already has a label of a different type,\n"
481 "probably a 32 bit disklabel. It must be cleaned out "
492 * Fetch disklabel for disk.
493 * Use ioctl to get label unless -r flag is given.
495 static struct disklabel64 *
498 struct disklabel64 *lp;
504 * Allocate space for the label. The boot1 code, if any,
505 * is embedded in the label. The label overlaps the boot1
508 lp = makebootarea(f);
509 lpcrcsize = offsetof(struct disklabel64,
510 d_partitions[lp->d_npartitions]) -
511 offsetof(struct disklabel64, d_magic);
514 if (lp->d_magic != DISKMAGIC64)
515 errx(1, "bad pack magic number");
516 if (lp->d_npartitions > MAXPARTITIONS64 ||
517 savecrc != crc32(&lp->d_magic, lpcrcsize)
519 errx(1, "corrupted disklabel64");
524 * Just use a static structure to hold the label. Note
525 * that DIOCSDINFO64 does not overwrite the boot1 area
526 * even though it is part of the disklabel64 structure.
530 if (ioctl(f, DIOCGDVIRGIN64, lp) < 0) {
531 l_perror("ioctl DIOCGDVIRGIN64");
535 if (ioctl(f, DIOCGDINFO64, lp) < 0) {
536 l_perror("ioctl DIOCGDINFO64");
545 * Construct a boot area for boot1 and boot2 and return the location of
546 * the label within the area. The caller will overwrite the label so
547 * we don't actually have to read it.
549 static struct disklabel64 *
552 struct disklabel64 *lp;
553 struct partinfo info;
559 if (ioctl(f, DIOCGPART, &info) == 0)
560 secsize = info.media_blksize;
564 if (boot1buf == NULL) {
567 rsize = roundup2(sizeof(struct disklabel64), secsize);
568 boot1size = offsetof(struct disklabel64, d_magic);
570 boot1buf = malloc(rsize);
571 bzero(boot1buf, rsize);
572 r = read(f, boot1buf, rsize);
573 if (r != (int)rsize) {
575 err(4, "%s", specname);
578 lp = (void *)boot1buf;
580 if (installboot == 0)
583 if (boot2buf == NULL) {
584 boot2size = BOOT2SIZE64;
585 boot2buf = malloc(boot2size);
586 bzero(boot2buf, boot2size);
590 * If installing the boot code, read it into the appropriate portions
593 if (boot1path == NULL)
594 asprintf(&boot1path, "%s/boot1_64", _PATH_BOOTDIR);
595 if (boot2path == NULL)
596 asprintf(&boot2path, "%s/boot2_64", _PATH_BOOTDIR);
598 if ((fd = open(boot1path, O_RDONLY)) < 0)
599 err(4, "%s", boot1path);
600 if (fstat(fd, &st) < 0)
601 err(4, "%s", boot1path);
602 if (st.st_size > boot1size)
603 err(4, "%s must be exactly %d bytes!", boot1path, boot1size);
604 if (read(fd, boot1buf, boot1size) != boot1size)
605 err(4, "%s must be exactly %d bytes!", boot1path, boot1size);
608 if ((fd = open(boot2path, O_RDONLY)) < 0)
609 err(4, "%s", boot2path);
610 if (fstat(fd, &st) < 0)
611 err(4, "%s", boot2path);
612 if (st.st_size > boot2size)
613 err(4, "%s must be <= %d bytes!", boot2path, boot2size);
614 if ((r = read(fd, boot2buf, boot2size)) < 1)
615 err(4, "%s is empty!", boot2path);
616 boot2size = roundup2(r, secsize);
620 * XXX dangerously dedicated support goes here XXX
626 display(FILE *f, const struct disklabel64 *lp)
628 const struct partition64 *pp;
635 * Use a human readable block size if possible. This is for
636 * display and editing purposes only.
638 if (lp->d_align > 1024)
641 blksize = lp->d_align;
643 fprintf(f, "# %s:\n", specname);
645 fprintf(f, "# Calculated informational fields for the slice:\n");
647 fprintf(f, "# boot space: %10ju bytes\n",
648 (intmax_t)(lp->d_pbase - lp->d_bbase));
649 fprintf(f, "# data space: %10ju blocks\t# %6.2f MB (%ju bytes)\n",
650 (intmax_t)(lp->d_pstop - lp->d_pbase) / blksize,
651 (double)(lp->d_pstop - lp->d_pbase) / 1024.0 / 1024.0,
652 (intmax_t)(lp->d_pstop - lp->d_pbase));
654 fprintf(f, "# NOTE: The partition data base and stop are physically\n");
655 fprintf(f, "# aligned instead of slice-relative aligned.\n");
657 fprintf(f, "# All byte equivalent offsets must be aligned.\n");
660 uuid_to_string(&lp->d_stor_uuid, &str, NULL);
661 fprintf(f, "diskid: %s\n", str ? str : "<unknown>");
664 fprintf(f, "label: %s\n", lp->d_packname);
665 fprintf(f, "boot2 data base: 0x%012jx\n", (intmax_t)lp->d_bbase);
666 fprintf(f, "partitions data base: 0x%012jx\n", (intmax_t)lp->d_pbase);
667 fprintf(f, "partitions data stop: 0x%012jx\n", (intmax_t)lp->d_pstop);
668 fprintf(f, "backup label: 0x%012jx\n", (intmax_t)lp->d_abase);
669 fprintf(f, "total size: 0x%012jx\t# %6.2f MB\n",
670 (intmax_t)lp->d_total_size,
671 (double)lp->d_total_size / 1024.0 / 1024.0);
672 fprintf(f, "alignment: %u\n", lp->d_align);
673 fprintf(f, "display block size: %u\t# for partition display and edit only\n",
677 fprintf(f, "%u partitions:\n", lp->d_npartitions);
678 fprintf(f, "# size offset fstype fsuuid\n");
680 for (part = 0; part < lp->d_npartitions; part++) {
681 pp = &lp->d_partitions[part];
682 const u_long onemeg = 1024 * 1024;
684 if (pp->p_bsize == 0)
687 fprintf(f, " %c: ", 'a' + part);
689 if (pp->p_bsize % lp->d_align)
690 fprintf(f, "%10s ", "ILLEGAL");
692 fprintf(f, "%10ju ", (intmax_t)pp->p_bsize / blksize);
694 if ((pp->p_boffset - lp->d_pbase) % lp->d_align)
695 fprintf(f, "%10s ", "ILLEGAL");
698 (intmax_t)(pp->p_boffset - lp->d_pbase) / blksize);
700 if (pp->p_fstype < FSMAXTYPES)
701 fprintf(f, "%8.8s", fstypenames[pp->p_fstype]);
703 fprintf(f, "%8d", pp->p_fstype);
704 fprintf(f, "\t# %11.3fMB", (double)pp->p_bsize / onemeg);
707 for (part = 0; part < lp->d_npartitions; part++) {
708 pp = &lp->d_partitions[part];
710 if (pp->p_bsize == 0)
713 if (uuid_is_nil(&lp->d_stor_uuid, NULL) == 0) {
714 fprintf(f, " %c-stor_uuid: ", 'a' + part);
716 uuid_to_string(&pp->p_stor_uuid, &str, NULL);
718 fprintf(f, "%s", str);
725 fprintf(f, "# EXAMPLE\n");
726 fprintf(f, "#a: 4g 0 4.2BSD\n");
727 fprintf(f, "#a: * * 4.2BSD\n");
734 edit(struct disklabel64 *lp, int f)
737 struct disklabel64 label;
740 if ((fd = mkstemp(tmpfil)) == -1 ||
741 (fp = fdopen(fd, "w")) == NULL) {
742 warnx("can't create %s", tmpfil);
750 fp = fopen(tmpfil, "r");
752 warnx("can't reopen %s for reading", tmpfil);
755 bzero((char *)&label, sizeof(label));
756 if (getasciilabel(fp, &label)) {
758 if (writelabel(f, lp) == 0) {
765 printf("re-edit the label? [y]: "); fflush(stdout);
767 if (c != EOF && c != (int)'\n')
768 while (getchar() != (int)'\n')
784 omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP));
785 while ((pid = fork()) < 0) {
786 if (errno == EPROCLIM) {
787 warnx("you have too many processes");
790 if (errno != EAGAIN) {
800 if ((ed = getenv("EDITOR")) == NULL)
802 execlp(ed, ed, tmpfil, NULL);
805 while ((xpid = wait(&status)) >= 0)
816 while (*cp != '\0' && isspace(*cp))
818 if (*cp == '\0' || *cp == '#')
828 while (*cp != '\0' && !isspace(*cp) && *cp != '#')
830 if ((c = *cp) != '\0') {
839 * Read an ascii label in from fd f,
840 * in the same format as that put out by display(),
844 getasciilabel(FILE *f, struct disklabel64 *lp)
848 char *tp, line[BUFSIZ];
850 uint32_t blksize = 0;
852 int lineno = 0, errors = 0;
855 bzero(&part_set, sizeof(part_set));
856 bzero(&part_size_type, sizeof(part_size_type));
857 bzero(&part_offset_type, sizeof(part_offset_type));
858 while (fgets(line, sizeof(line) - 1, f)) {
860 if ((cp = strchr(line,'\n')) != NULL)
865 tp = strchr(cp, ':');
867 fprintf(stderr, "line %d: syntax error\n", lineno);
871 *tp++ = '\0', tp = skip(tp);
872 if (sscanf(cp, "%lu partitions", &v) == 1) {
873 if (v == 0 || v > MAXPARTITIONS64) {
875 "line %d: bad # of partitions\n", lineno);
876 lp->d_npartitions = MAXPARTITIONS64;
879 lp->d_npartitions = v;
885 if (streq(cp, "diskid")) {
887 uuid_from_string(tp, &lp->d_stor_uuid, &status);
888 if (status != uuid_s_ok) {
890 "line %d: %s: illegal UUID\n",
896 if (streq(cp, "label")) {
897 strlcpy((char *)lp->d_packname, tp, sizeof(lp->d_packname));
901 if (streq(cp, "alignment")) {
902 v = strtoul(tp, NULL, 0);
903 if (v <= 0 || (v & DEV_BMASK) != 0 || v > 1024*1024) {
905 "line %d: %s: bad alignment\n",
913 if (streq(cp, "total size")) {
914 vv = strtoull(tp, NULL, 0);
915 if (vv == 0 || vv == (uint64_t)-1) {
916 fprintf(stderr, "line %d: %s: bad %s\n",
920 lp->d_total_size = vv;
924 if (streq(cp, "boot2 data base")) {
925 vv = strtoull(tp, NULL, 0);
926 if (vv == 0 || vv == (uint64_t)-1) {
927 fprintf(stderr, "line %d: %s: bad %s\n",
935 if (streq(cp, "partitions data base")) {
936 vv = strtoull(tp, NULL, 0);
937 if (vv == 0 || vv == (uint64_t)-1) {
938 fprintf(stderr, "line %d: %s: bad %s\n",
946 if (streq(cp, "partitions data stop")) {
947 vv = strtoull(tp, NULL, 0);
948 if (vv == 0 || vv == (uint64_t)-1) {
949 fprintf(stderr, "line %d: %s: bad %s\n",
957 if (streq(cp, "backup label")) {
958 vv = strtoull(tp, NULL, 0);
959 if (vv == 0 || vv == (uint64_t)-1) {
960 fprintf(stderr, "line %d: %s: bad %s\n",
968 if (streq(cp, "display block size")) {
969 v = strtoul(tp, NULL, 0);
970 if (v <= 0 || (v & DEV_BMASK) != 0 || v > 1024*1024) {
971 fprintf(stderr, "line %d: %s: bad %s\n",
980 /* the ':' was removed above */
983 * Handle main partition data, e.g. a:, b:, etc.
985 if (*cp < 'a' || *cp > MAX_PART) {
987 "line %d: %s: Unknown disklabel field\n", lineno,
993 /* Process a partition specification line. */
995 if (part >= lp->d_npartitions) {
997 "line %d: partition name out of range a-%c: %s\n",
998 lineno, 'a' + lp->d_npartitions - 1, cp);
1004 fprintf(stderr, "block size to use for partition "
1005 "display was not specified!\n");
1010 if (strcmp(cp + 1, "-stor_uuid") == 0) {
1011 if (getasciipartuuid(tp, lp, part, lineno, blksize)) {
1016 } else if (cp[1] == 0) {
1018 if (getasciipartspec(tp, lp, part, lineno, blksize)) {
1024 fprintf(stderr, "line %d: %s: Unknown disklabel field\n",
1029 errors += checklabel(lp);
1030 return (errors == 0);
1034 parse_field_val(char **tp, char **cp, u_int64_t *vv, int lineno)
1038 if (*tp == NULL || **tp == 0) {
1039 fprintf(stderr, "line %d: too few numeric fields\n", lineno);
1044 *vv = strtoull(*cp, &tmp, 0);
1045 if (*vv == ULLONG_MAX) {
1046 fprintf(stderr, "line %d: illegal number\n", lineno);
1056 * Read a partition line into partition `part' in the specified disklabel.
1057 * Return 0 on success, 1 on failure.
1060 getasciipartspec(char *tp, struct disklabel64 *lp, int part,
1061 int lineno, uint32_t blksize)
1063 struct partition64 *pp;
1071 pp = &lp->d_partitions[part];
1077 r = parse_field_val(&tp, &cp, &vv, lineno);
1107 r = 0; /* eat the suffix */
1110 Warning("unknown size specifier '%c' (*/%%/K/M/G/T are valid)",
1115 part_size_type[part] = r;
1116 if (vv == 0 && r != '*') {
1118 "line %d: %s: bad partition size (0)\n", lineno, cp);
1121 pp->p_bsize = vv * mpx;
1126 r = parse_field_val(&tp, &cp, &vv, lineno);
1129 part_offset_type[part] = r;
1135 pp->p_boffset = vv * blksize + lp->d_pbase;
1139 "line %d: %s: bad suffix on partition offset (%c)\n",
1149 "line %d: no filesystem type was specified\n", lineno);
1154 for (cpp = fstypenames; cpp < &fstypenames[FSMAXTYPES]; cpp++) {
1155 if (*cpp && strcasecmp(*cpp, cp) == 0)
1159 pp->p_fstype = cpp - fstypenames;
1162 v = strtoul(cp, NULL, 0);
1165 if (v >= FSMAXTYPES) {
1167 "line %d: Warning, unknown filesystem type %s\n",
1176 fprintf(stderr, "line %d: Warning, extra data on line\n",
1183 getasciipartuuid(char *tp, struct disklabel64 *lp, int part,
1184 int lineno, uint32_t blksize __unused)
1186 struct partition64 *pp;
1190 pp = &lp->d_partitions[part];
1194 uuid_from_string(cp, &pp->p_stor_uuid, &status);
1195 if (status != uuid_s_ok) {
1196 fprintf(stderr, "line %d: Illegal storage uuid specification\n",
1204 * Check disklabel for errors and fill in
1205 * derived fields according to supplied values.
1208 checklabel(struct disklabel64 *lp)
1210 struct partition64 *pp;
1213 u_int64_t total_size;
1214 u_int64_t current_offset;
1215 u_long total_percent;
1216 int seen_default_offset;
1219 struct partition64 *pp2;
1222 if (lp->d_align < 512 ||
1223 (lp->d_align ^ (lp->d_align - 1)) != lp->d_align * 2 - 1) {
1224 Warning("Illegal alignment specified: %u\n", lp->d_align);
1227 if (lp->d_npartitions > MAXPARTITIONS64) {
1228 Warning("number of partitions (%u) > MAXPARTITIONS (%d)",
1229 lp->d_npartitions, MAXPARTITIONS64);
1232 off = offsetof(struct disklabel64, d_partitions[lp->d_npartitions]);
1233 off = (off + lp->d_align - 1) & ~(int64_t)(lp->d_align - 1);
1235 if (lp->d_bbase < off || lp->d_bbase % lp->d_align) {
1236 Warning("illegal boot2 data base ");
1241 * pbase can be unaligned slice-relative but will be
1242 * aligned physically.
1244 if (lp->d_pbase < lp->d_bbase) {
1245 Warning("illegal partition data base");
1248 if (lp->d_pstop < lp->d_pbase) {
1249 Warning("illegal partition data stop");
1252 if (lp->d_pstop > lp->d_total_size) {
1253 printf("%012jx\n%012jx\n",
1254 (intmax_t)lp->d_pstop, (intmax_t)lp->d_total_size);
1255 Warning("disklabel control info is beyond the total size");
1259 (lp->d_abase < lp->d_pstop ||
1260 lp->d_abase > lp->d_total_size - off)) {
1261 Warning("illegal backup label location");
1265 /* first allocate space to the partitions, then offsets */
1266 total_size = 0; /* in bytes */
1267 total_percent = 0; /* in percent */
1269 /* find all fixed partitions */
1270 for (i = 0; i < (int)lp->d_npartitions; i++) {
1271 pp = &lp->d_partitions[i];
1273 if (part_size_type[i] == '*') {
1274 if (part_offset_type[i] != '*') {
1275 if (total_size < pp->p_boffset)
1276 total_size = pp->p_boffset;
1278 if (hog_part != -1) {
1279 Warning("Too many '*' partitions (%c and %c)",
1280 hog_part + 'a',i + 'a');
1288 if (part_size_type[i] == '%') {
1290 * don't count %'s yet
1292 total_percent += size;
1295 * Value has already been converted
1298 if (size % lp->d_align != 0) {
1299 Warning("partition %c's size is not properly aligned",
1307 /* handle % partitions - note %'s don't need to add up to 100! */
1308 if (total_percent != 0) {
1312 free_space = (int64_t)(lp->d_pstop - lp->d_pbase - total_size);
1313 free_space &= ~(u_int64_t)(lp->d_align - 1);
1315 space_left = free_space;
1316 if (total_percent > 100) {
1317 fprintf(stderr,"total percentage %lu is greater than 100\n",
1322 if (free_space > 0) {
1323 for (i = 0; i < (int)lp->d_npartitions; i++) {
1324 pp = &lp->d_partitions[i];
1325 if (part_set[i] && part_size_type[i] == '%') {
1326 /* careful of overflows! and integer roundoff */
1327 pp->p_bsize = ((double)pp->p_bsize/100) * free_space;
1328 pp->p_bsize = (pp->p_bsize + lp->d_align - 1) & ~(u_int64_t)(lp->d_align - 1);
1329 if ((int64_t)pp->p_bsize > space_left)
1330 pp->p_bsize = (u_int64_t)space_left;
1331 total_size += pp->p_bsize;
1332 space_left -= pp->p_bsize;
1336 fprintf(stderr, "%jd bytes available to give to "
1337 "'*' and '%%' partitions\n",
1338 (intmax_t)free_space);
1340 /* fix? set all % partitions to size 0? */
1343 /* give anything remaining to the hog partition */
1344 if (hog_part != -1) {
1345 off = lp->d_pstop - lp->d_pbase - total_size;
1346 off &= ~(u_int64_t)(lp->d_align - 1);
1347 lp->d_partitions[hog_part].p_bsize = off;
1348 total_size = lp->d_pstop - lp->d_pbase;
1351 /* Now set the offsets for each partition */
1352 current_offset = lp->d_pbase;
1353 seen_default_offset = 0;
1354 for (i = 0; i < (int)lp->d_npartitions; i++) {
1356 pp = &lp->d_partitions[i];
1357 if (pp->p_bsize == 0)
1360 if (part_offset_type[i] == '*') {
1361 pp->p_boffset = current_offset;
1362 seen_default_offset = 1;
1364 /* allow them to be out of order for old-style tables */
1365 if (pp->p_boffset < current_offset &&
1366 seen_default_offset &&
1367 pp->p_fstype != FS_VINUM) {
1369 "Offset 0x%012jx for partition %c overlaps previous partition which ends at 0x%012jx\n",
1370 (intmax_t)pp->p_boffset,
1372 (intmax_t)current_offset);
1374 "Labels with any *'s for offset must be in ascending order by sector\n");
1376 } else if (pp->p_boffset != current_offset &&
1377 seen_default_offset) {
1379 * this may give unneeded warnings if
1380 * partitions are out-of-order
1383 "Offset 0x%012jx for partition %c doesn't match expected value 0x%012jx",
1384 pp->p_boffset, i + 'a',
1385 (intmax_t)current_offset);
1388 current_offset = pp->p_boffset + pp->p_bsize;
1392 for (i = 0; i < (int)lp->d_npartitions; i++) {
1394 pp = &lp->d_partitions[i];
1395 if (pp->p_bsize == 0 && pp->p_boffset != 0)
1396 Warning("partition %c: size 0, but offset 0x%012jx",
1397 part, (intmax_t)pp->p_boffset);
1398 if (pp->p_bsize == 0) {
1402 if (uuid_is_nil(&pp->p_stor_uuid, NULL))
1403 uuid_create(&pp->p_stor_uuid, NULL);
1405 if (pp->p_boffset < lp->d_pbase) {
1407 "partition %c: offset out of bounds (%jd)\n",
1408 part, (intmax_t)(pp->p_boffset - lp->d_pbase));
1411 if (pp->p_boffset > lp->d_pstop) {
1413 "partition %c: offset out of bounds (%jd)\n",
1414 part, (intmax_t)(pp->p_boffset - lp->d_pbase));
1417 if (pp->p_boffset + pp->p_bsize > lp->d_pstop) {
1419 "partition %c: size out of bounds (%jd)\n",
1420 part, (intmax_t)(pp->p_boffset - lp->d_pbase));
1424 /* check for overlaps */
1425 /* this will check for all possible overlaps once and only once */
1426 for (j = 0; j < i; j++) {
1427 pp2 = &lp->d_partitions[j];
1428 if (pp->p_fstype != FS_VINUM &&
1429 pp2->p_fstype != FS_VINUM &&
1430 part_set[i] && part_set[j]) {
1431 if (pp2->p_boffset < pp->p_boffset + pp->p_bsize &&
1432 (pp2->p_boffset + pp2->p_bsize > pp->p_boffset ||
1433 pp2->p_boffset >= pp->p_boffset)) {
1434 fprintf(stderr,"partitions %c and %c overlap!\n",
1441 for (; i < (int)lp->d_npartitions; i++) {
1443 pp = &lp->d_partitions[i];
1444 if (pp->p_bsize || pp->p_boffset)
1445 Warning("unused partition %c: size 0x%012jx "
1447 'a' + i, (intmax_t)pp->p_bsize,
1448 (intmax_t)pp->p_boffset);
1454 * When operating on a "virgin" disk, try getting an initial label
1455 * from the associated device driver. This might work for all device
1456 * drivers that are able to fetch some initial device parameters
1457 * without even having access to a (BSD) disklabel, like SCSI disks,
1458 * most IDE drives, or vn devices.
1460 * The device name must be given in its "canonical" form.
1462 static struct disklabel64 dlab;
1464 static struct disklabel64 *
1465 getvirginlabel(void)
1467 struct disklabel64 *dl = &dlab;
1470 if ((f = open(dkname, O_RDONLY)) == -1) {
1471 warn("cannot open %s", dkname);
1476 * Generate a virgin disklabel via ioctl
1478 if (ioctl(f, DIOCGDVIRGIN64, dl) < 0) {
1479 l_perror("ioctl DIOCGDVIRGIN64");
1489 Warning(const char *fmt, ...)
1493 fprintf(stderr, "Warning, ");
1495 vfprintf(stderr, fmt, ap);
1496 fprintf(stderr, "\n");
1503 fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
1504 "usage: disklabel64 [-r] disk",
1505 "\t\t(to read label)",
1506 " disklabel64 -w [-r] [-n] disk [type [packid]]",
1507 "\t\t(to write label with existing boot program)",
1508 " disklabel64 -e [-r] [-n] disk",
1509 "\t\t(to edit label)",
1510 " disklabel64 -R [-r] [-n] disk protofile",
1511 "\t\t(to restore label with existing boot program)",
1512 " disklabel64 -B [-n] [-b boot1 -s boot2] disk [type]",
1513 "\t\t(to install boot program with existing label)",
1514 " disklabel64 -w -B [-n] [-b boot1 -s boot2] disk [type [packid]]",
1515 "\t\t(to write label and boot program)",
1516 " disklabel64 -R -B [-n] [-b boot1 -s boot2] disk protofile [type]",
1517 "\t\t(to restore label and boot program)",
1518 " disklabel64 [-NW] disk",
1519 "\t\t(to write disable/enable label)");