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);
102 * Disklabel64: read and write 64 bit disklabels.
103 * The label is usually placed on one of the first sectors of the disk.
104 * Many machines also place a bootstrap in the same area,
105 * in which case the label is embedded in the bootstrap.
106 * The bootstrap source must leave space at the proper offset
107 * for the label on such machines.
110 #define LABELSIZE ((sizeof(struct disklabel64) + 4095) & ~4095)
111 #define BOOTSIZE 32768
113 /* FIX! These are too low, but are traditional */
114 #define DEFAULT_NEWFS_BLOCK 8192U
115 #define DEFAULT_NEWFS_FRAG 1024U
116 #define DEFAULT_NEWFS_CPG 16U
118 #define BIG_NEWFS_BLOCK 16384U
119 #define BIG_NEWFS_FRAG 2048U
120 #define BIG_NEWFS_CPG 64U
122 void makelabel(const char *, const char *, struct disklabel64 *);
123 int writelabel(int, struct disklabel64 *);
124 void l_perror(const char *);
125 struct disklabel64 *readlabel(int);
126 struct disklabel64 *makebootarea(int);
127 void display(FILE *, const struct disklabel64 *);
128 int edit(struct disklabel64 *, int);
132 int getasciilabel(FILE *, struct disklabel64 *);
133 int getasciipartspec(char *, struct disklabel64 *, int, int, uint32_t);
134 int getasciipartuuid(char *, struct disklabel64 *, int, int, uint32_t);
135 int checklabel(struct disklabel64 *);
136 void Warning(const char *, ...) __printflike(1, 2);
138 struct disklabel64 *getvirginlabel(void);
140 #define DEFEDITOR _PATH_VI
141 #define streq(a,b) (strcmp(a,b) == 0)
145 char tmpfil[] = PATH_TMPFILE;
147 struct disklabel64 lab;
149 #define MAX_PART ('z')
150 #define MAX_NUM_PARTS (1 + MAX_PART - 'a')
151 char part_size_type[MAX_NUM_PARTS];
152 char part_offset_type[MAX_NUM_PARTS];
153 int part_set[MAX_NUM_PARTS];
155 int installboot; /* non-zero if we should install a boot program */
165 UNSPEC, EDIT, NOWRITE, READ, RESTORE, WRITE, WRITEABLE, WRITEBOOT
170 int disable_write; /* set to disable writing to disk label */
171 u_int32_t slice_start_lba;
175 #define OPTIONS "BNRWb:denrs:Vw"
177 #define OPTIONS "BNRWb:enrs:Vw"
181 main(int argc, char *argv[])
183 struct disklabel64 *lp;
185 int ch, f = 0, flag, error = 0;
188 while ((ch = getopt(argc, argv, OPTIONS)) != -1)
258 dkname = getdevpath(argv[0], 0);
260 f = open(specname, op == READ ? O_RDONLY : O_RDWR);
262 err(4, "%s", specname);
278 if (ioctl(f, DIOCWLABEL, (char *)&flag) < 0)
279 err(4, "ioctl DIOCWLABEL");
287 error = checklabel(lp);
291 if (installboot && argc == 3) {
292 makelabel(argv[2], 0, &lab);
296 * We only called makelabel() for its side effect
297 * of setting the bootstrap file names. Discard
298 * all changes to `lab' so that all values in the
299 * final label come from the ASCII label.
301 bzero((char *)&lab, sizeof(lab));
305 if (!(t = fopen(argv[1], "r")))
306 err(4, "%s", argv[1]);
307 if (!getasciilabel(t, &lab))
309 lp = makebootarea(f);
310 bcopy(&lab.d_magic, &lp->d_magic,
311 sizeof(lab) - offsetof(struct disklabel64, d_magic));
312 error = writelabel(f, lp);
322 makelabel(argv[1], name, &lab);
323 lp = makebootarea(f);
324 bcopy(&lab.d_magic, &lp->d_magic,
325 sizeof(lab) - offsetof(struct disklabel64, d_magic));
326 if (checklabel(lp) == 0)
327 error = writelabel(f, lp);
332 if (ioctl(f, DIOCWLABEL, (char *)&flag) < 0)
333 err(4, "ioctl DIOCWLABEL");
338 struct disklabel64 tlab;
343 makelabel(argv[1], 0, &lab);
344 lp = makebootarea(f);
345 bcopy(&tlab.d_magic, &lp->d_magic,
346 sizeof(tlab) - offsetof(struct disklabel64, d_magic));
347 if (checklabel(lp) == 0)
348 error = writelabel(f, lp);
356 * Construct a prototype disklabel from /etc/disktab. As a side
357 * effect, set the names of the primary and secondary boot files
361 makelabel(const char *type, const char *name, struct disklabel64 *lp)
363 struct disklabel64 *dp;
365 if (strcmp(type, "auto") == 0)
366 dp = getvirginlabel();
370 errx(1, "%s: unknown disk type", type);
374 * NOTE: boot control files may no longer be specified in disktab.
377 strncpy(lp->d_packname, name, sizeof(lp->d_packname));
381 writelabel(int f, struct disklabel64 *lp)
383 struct disklabel64 *blp;
389 lpsize = offsetof(struct disklabel64, d_partitions[lp->d_npartitions]);
390 lpcrcsize = lpsize - offsetof(struct disklabel64, d_magic);
393 Warning("write to disk label suppressed - label was as follows:");
397 lp->d_magic = DISKMAGIC64;
399 lp->d_crc = crc32(&lp->d_magic, lpcrcsize);
402 * Make sure the boot area is not too large
405 int lpbsize = (int)(lp->d_pbase - lp->d_bbase);
406 if (lp->d_pbase == 0) {
407 errx(1, "no space was set aside in "
408 "the disklabel for boot2!");
410 if (boot2size > lpbsize) {
411 errx(1, "label did not reserve enough "
412 "space for boot! %d/%d",
418 * First set the kernel disk label,
419 * then write a label to the raw disk.
420 * If the SDINFO ioctl fails because it is
421 * unimplemented, keep going; otherwise, the kernel
422 * consistency checks may prevent us from changing
423 * the current (in-core) label.
425 if (ioctl(f, DIOCSDINFO64, lp) < 0 &&
426 errno != ENODEV && errno != ENOTTY) {
427 l_perror("ioctl DIOCSDINFO");
430 lseek(f, (off_t)0, SEEK_SET);
433 * The disklabel embeds areas which we may not
434 * have wanted to change. Merge those areas in
437 blp = makebootarea(f);
439 bcopy(&lp->d_magic, &blp->d_magic,
441 offsetof(struct disklabel64, d_magic));
445 * write enable label sector before write
446 * (if necessary), disable after writing.
449 if (ioctl(f, DIOCWLABEL, &flag) < 0)
450 warn("ioctl DIOCWLABEL");
452 r = write(f, boot1buf, boot1lsize);
453 if (r != (ssize_t)boot1lsize) {
458 * Output the remainder of the disklabel
461 lseek(f, lp->d_bbase, 0);
462 r = write(f, boot2buf, boot2size);
463 if (r != boot2size) {
469 ioctl(f, DIOCWLABEL, &flag);
470 } else if (ioctl(f, DIOCWDINFO64, lp) < 0) {
471 l_perror("ioctl DIOCWDINFO64");
479 l_perror(const char *s)
484 warnx("%s: no disk label on disk;", s);
485 fprintf(stderr, "add \"-r\" to install initial label\n");
489 warnx("%s: label magic number or checksum is wrong!", s);
490 fprintf(stderr, "(disklabel or kernel is out of date?)\n");
494 warnx("%s: open partition would move or shrink", s);
498 warnx("%s: the disk already has a label of a different type,\n"
499 "probably a 32 bit disklabel. It must be cleaned out "
510 * Fetch disklabel for disk.
511 * Use ioctl to get label unless -r flag is given.
516 struct disklabel64 *lp;
522 * Allocate space for the label. The boot1 code, if any,
523 * is embedded in the label. The label overlaps the boot1
526 lp = makebootarea(f);
527 lpcrcsize = offsetof(struct disklabel64,
528 d_partitions[lp->d_npartitions]) -
529 offsetof(struct disklabel64, d_magic);
532 if (lp->d_magic != DISKMAGIC64)
533 errx(1, "bad pack magic number");
534 if (lp->d_npartitions > MAXPARTITIONS64 ||
535 savecrc != crc32(&lp->d_magic, lpcrcsize)
537 errx(1, "corrupted disklabel64");
542 * Just use a static structure to hold the label. Note
543 * that DIOCSDINFO64 does not overwrite the boot1 area
544 * even though it is part of the disklabel64 structure.
548 if (ioctl(f, DIOCGDVIRGIN64, lp) < 0) {
549 l_perror("ioctl DIOCGDVIRGIN64");
553 if (ioctl(f, DIOCGDINFO64, lp) < 0) {
554 l_perror("ioctl DIOCGDINFO64");
563 * Construct a boot area for boot1 and boot2 and return the location of
564 * the label within the area. The caller will overwrite the label so
565 * we don't actually have to read it.
570 struct disklabel64 *lp;
571 struct partinfo info;
577 if (ioctl(f, DIOCGPART, &info) == 0)
578 secsize = info.media_blksize;
582 if (boot1buf == NULL) {
585 rsize = roundup2(sizeof(struct disklabel64), secsize);
586 boot1size = offsetof(struct disklabel64, d_magic);
588 boot1buf = malloc(rsize);
589 bzero(boot1buf, rsize);
590 r = read(f, boot1buf, rsize);
592 err(4, "%s", specname);
594 lp = (void *)boot1buf;
596 if (installboot == 0)
599 if (boot2buf == NULL) {
601 boot2buf = malloc(boot2size);
602 bzero(boot2buf, boot2size);
606 * If installing the boot code, read it into the appropriate portions
609 if (boot1path == NULL)
610 asprintf(&boot1path, "%s/boot1_64", _PATH_BOOTDIR);
611 if (boot2path == NULL)
612 asprintf(&boot2path, "%s/boot2_64", _PATH_BOOTDIR);
614 if ((fd = open(boot1path, O_RDONLY)) < 0)
615 err(4, "%s", boot1path);
616 if (fstat(fd, &st) < 0)
617 err(4, "%s", boot1path);
618 if (st.st_size > boot1size)
619 err(4, "%s must be exactly %d bytes!", boot1path, boot1size);
620 if (read(fd, boot1buf, boot1size) != boot1size)
621 err(4, "%s must be exactly %d bytes!", boot1path, boot1size);
624 if ((fd = open(boot2path, O_RDONLY)) < 0)
625 err(4, "%s", boot2path);
626 if (fstat(fd, &st) < 0)
627 err(4, "%s", boot2path);
628 if (st.st_size > boot2size)
629 err(4, "%s must be <= %d bytes!", boot2path, boot2size);
630 if ((r = read(fd, boot2buf, boot2size)) < 1)
631 err(4, "%s is empty!", boot2path);
632 boot2size = roundup2(r, secsize);
636 * XXX dangerously dedicated support goes here XXX
642 display(FILE *f, const struct disklabel64 *lp)
644 const struct partition64 *pp;
651 * Use a human readable block size if possible. This is for
652 * display and editing purposes only.
654 if (lp->d_align > 1024)
657 blksize = lp->d_align;
659 fprintf(f, "# %s:\n", specname);
661 fprintf(f, "# Informational fields calculated from the above\n");
662 fprintf(f, "# All byte equivalent offsets must be aligned\n");
664 fprintf(f, "# boot space: %10ju bytes\n",
665 (intmax_t)(lp->d_pbase - lp->d_bbase));
666 fprintf(f, "# data space: %10ju blocks\t# %6.2f MB (%ju bytes)\n",
667 (intmax_t)(lp->d_pstop - lp->d_pbase) / blksize,
668 (double)(lp->d_pstop - lp->d_pbase) / 1024.0 / 1024.0,
669 (intmax_t)(lp->d_pstop - lp->d_pbase));
671 fprintf(f, "# NOTE: If the partition data base looks odd it may be\n");
672 fprintf(f, "# physically aligned instead of slice-aligned\n");
675 uuid_to_string(&lp->d_stor_uuid, &str, NULL);
676 fprintf(f, "diskid: %s\n", str ? str : "<unknown>");
679 fprintf(f, "label: %.*s\n", (int)sizeof(lp->d_packname),
681 fprintf(f, "boot2 data base: 0x%012jx\n", (intmax_t)lp->d_bbase);
682 fprintf(f, "partitions data base: 0x%012jx\n", (intmax_t)lp->d_pbase);
683 fprintf(f, "partitions data stop: 0x%012jx\n", (intmax_t)lp->d_pstop);
684 fprintf(f, "backup label: 0x%012jx\n", (intmax_t)lp->d_abase);
685 fprintf(f, "total size: 0x%012jx\t# %6.2f MB\n",
686 (intmax_t)lp->d_total_size,
687 (double)lp->d_total_size / 1024.0 / 1024.0);
688 fprintf(f, "alignment: %u\n", lp->d_align);
689 fprintf(f, "display block size: %u\t# for partition display only\n",
693 fprintf(f, "%u partitions:\n", lp->d_npartitions);
694 fprintf(f, "# size offset fstype fsuuid\n");
696 for (part = 0; part < lp->d_npartitions; part++) {
697 pp = &lp->d_partitions[part];
698 const u_long onemeg = 1024 * 1024;
700 if (pp->p_bsize == 0)
703 fprintf(f, " %c: ", 'a' + part);
705 if (pp->p_bsize % lp->d_align)
706 fprintf(f, "%10s ", "ILLEGAL");
708 fprintf(f, "%10ju ", (intmax_t)pp->p_bsize / blksize);
710 if ((pp->p_boffset - lp->d_pbase) % lp->d_align)
711 fprintf(f, "%10s ", "ILLEGAL");
714 (intmax_t)(pp->p_boffset - lp->d_pbase) / blksize);
716 if (pp->p_fstype < FSMAXTYPES)
717 fprintf(f, "%8.8s", fstypenames[pp->p_fstype]);
719 fprintf(f, "%8d", pp->p_fstype);
720 fprintf(f, "\t# %11.3fMB", (double)pp->p_bsize / onemeg);
723 for (part = 0; part < lp->d_npartitions; part++) {
724 pp = &lp->d_partitions[part];
726 if (pp->p_bsize == 0)
729 if (uuid_is_nil(&lp->d_stor_uuid, NULL) == 0) {
730 fprintf(f, " %c-stor_uuid: ", 'a' + part);
732 uuid_to_string(&pp->p_stor_uuid, &str, NULL);
734 fprintf(f, "%s", str);
741 fprintf(f, "# EXAMPLE\n");
742 fprintf(f, "#a: 4g 0 4.2BSD\n");
743 fprintf(f, "#a: * * 4.2BSD\n");
750 edit(struct disklabel64 *lp, int f)
753 struct disklabel64 label;
756 if ((fd = mkstemp(tmpfil)) == -1 ||
757 (fp = fdopen(fd, "w")) == NULL) {
758 warnx("can't create %s", tmpfil);
766 fp = fopen(tmpfil, "r");
768 warnx("can't reopen %s for reading", tmpfil);
771 bzero((char *)&label, sizeof(label));
772 if (getasciilabel(fp, &label)) {
774 if (writelabel(f, lp) == 0) {
781 printf("re-edit the label? [y]: "); fflush(stdout);
783 if (c != EOF && c != (int)'\n')
784 while (getchar() != (int)'\n')
800 omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP));
801 while ((pid = fork()) < 0) {
802 if (errno == EPROCLIM) {
803 warnx("you have too many processes");
806 if (errno != EAGAIN) {
816 if ((ed = getenv("EDITOR")) == NULL)
818 execlp(ed, ed, tmpfil, NULL);
821 while ((xpid = wait(&status)) >= 0)
832 while (*cp != '\0' && isspace(*cp))
834 if (*cp == '\0' || *cp == '#')
844 while (*cp != '\0' && !isspace(*cp) && *cp != '#')
846 if ((c = *cp) != '\0') {
855 * Read an ascii label in from fd f,
856 * in the same format as that put out by display(),
860 getasciilabel(FILE *f, struct disklabel64 *lp)
864 char *tp, line[BUFSIZ];
866 uint32_t blksize = 0;
868 int lineno = 0, errors = 0;
871 bzero(&part_set, sizeof(part_set));
872 bzero(&part_size_type, sizeof(part_size_type));
873 bzero(&part_offset_type, sizeof(part_offset_type));
874 while (fgets(line, sizeof(line) - 1, f)) {
876 if ((cp = strchr(line,'\n')) != NULL)
881 tp = strchr(cp, ':');
883 fprintf(stderr, "line %d: syntax error\n", lineno);
887 *tp++ = '\0', tp = skip(tp);
888 if (sscanf(cp, "%lu partitions", &v) == 1) {
889 if (v == 0 || v > MAXPARTITIONS64) {
891 "line %d: bad # of partitions\n", lineno);
892 lp->d_npartitions = MAXPARTITIONS64;
895 lp->d_npartitions = v;
901 if (streq(cp, "diskid")) {
903 uuid_from_string(tp, &lp->d_stor_uuid, &status);
904 if (status != uuid_s_ok) {
906 "line %d: %s: illegal UUID\n",
912 if (streq(cp, "label")) {
913 strncpy(lp->d_packname, tp, sizeof (lp->d_packname));
917 if (streq(cp, "alignment")) {
918 v = strtoul(tp, NULL, 0);
919 if (v <= 0 || (v & DEV_BMASK) != 0 || v > 1024*1024) {
921 "line %d: %s: bad alignment\n",
929 if (streq(cp, "total size")) {
930 vv = strtoull(tp, NULL, 0);
931 if (vv == 0 || vv == (uint64_t)-1) {
932 fprintf(stderr, "line %d: %s: bad %s\n",
936 lp->d_total_size = vv;
940 if (streq(cp, "boot2 data base")) {
941 vv = strtoull(tp, NULL, 0);
942 if (vv == 0 || vv == (uint64_t)-1) {
943 fprintf(stderr, "line %d: %s: bad %s\n",
951 if (streq(cp, "partitions data base")) {
952 vv = strtoull(tp, NULL, 0);
953 if (vv == 0 || vv == (uint64_t)-1) {
954 fprintf(stderr, "line %d: %s: bad %s\n",
962 if (streq(cp, "partitions data stop")) {
963 vv = strtoull(tp, NULL, 0);
964 if (vv == 0 || vv == (uint64_t)-1) {
965 fprintf(stderr, "line %d: %s: bad %s\n",
973 if (streq(cp, "backup label")) {
974 vv = strtoull(tp, NULL, 0);
975 if (vv == 0 || vv == (uint64_t)-1) {
976 fprintf(stderr, "line %d: %s: bad %s\n",
984 if (streq(cp, "display block size")) {
985 v = strtoul(tp, NULL, 0);
986 if (v <= 0 || (v & DEV_BMASK) != 0 || v > 1024*1024) {
988 "line %d: %s: bad alignment\n",
997 /* the ':' was removed above */
1000 * Handle main partition data, e.g. a:, b:, etc.
1002 if (*cp < 'a' || *cp > MAX_PART) {
1004 "line %d: %s: Unknown disklabel field\n", lineno,
1010 /* Process a partition specification line. */
1012 if (part >= lp->d_npartitions) {
1014 "line %d: partition name out of range a-%c: %s\n",
1015 lineno, 'a' + lp->d_npartitions - 1, cp);
1021 fprintf(stderr, "block size to use for partition "
1022 "display was not specified!\n");
1027 if (strcmp(cp + 1, "-stor_uuid") == 0) {
1028 if (getasciipartuuid(tp, lp, part, lineno, blksize)) {
1033 } else if (cp[1] == 0) {
1035 if (getasciipartspec(tp, lp, part, lineno, blksize)) {
1041 fprintf(stderr, "line %d: %s: Unknown disklabel field\n",
1046 errors += checklabel(lp);
1047 return (errors == 0);
1052 parse_field_val(char **tp, char **cp, u_int64_t *vv, int lineno)
1056 if (*tp == NULL || **tp == 0) {
1057 fprintf(stderr, "line %d: too few numeric fields\n", lineno);
1062 *vv = strtoull(*cp, &tmp, 0);
1063 if (*vv == ULLONG_MAX) {
1064 fprintf(stderr, "line %d: illegal number\n", lineno);
1074 * Read a partition line into partition `part' in the specified disklabel.
1075 * Return 0 on success, 1 on failure.
1078 getasciipartspec(char *tp, struct disklabel64 *lp, int part,
1079 int lineno, uint32_t blksize)
1081 struct partition64 *pp;
1089 pp = &lp->d_partitions[part];
1095 r = parse_field_val(&tp, &cp, &vv, lineno);
1125 r = 0; /* eat the suffix */
1128 Warning("unknown size specifier '%c' (*/%%/K/M/G/T are valid)",
1133 part_size_type[part] = r;
1134 if (vv == 0 && r != '*') {
1136 "line %d: %s: bad partition size (0)\n", lineno, cp);
1139 pp->p_bsize = vv * mpx;
1144 r = parse_field_val(&tp, &cp, &vv, lineno);
1147 part_offset_type[part] = r;
1153 pp->p_boffset = vv * blksize + lp->d_pbase;
1157 "line %d: %s: bad suffix on partition offset (%c)\n",
1167 "line %d: no filesystem type was specified\n", lineno);
1172 for (cpp = fstypenames; cpp < &fstypenames[FSMAXTYPES]; cpp++) {
1173 if (*cpp && strcasecmp(*cpp, cp) == 0)
1177 pp->p_fstype = cpp - fstypenames;
1180 v = strtoul(cp, NULL, 0);
1183 if (v >= FSMAXTYPES) {
1185 "line %d: Warning, unknown filesystem type %s\n",
1194 fprintf(stderr, "line %d: Warning, extra data on line\n",
1201 getasciipartuuid(char *tp, struct disklabel64 *lp, int part,
1202 int lineno, uint32_t blksize __unused)
1204 struct partition64 *pp;
1208 pp = &lp->d_partitions[part];
1212 uuid_from_string(cp, &pp->p_stor_uuid, &status);
1213 if (status != uuid_s_ok) {
1214 fprintf(stderr, "line %d: Illegal storage uuid specification\n",
1222 * Check disklabel for errors and fill in
1223 * derived fields according to supplied values.
1226 checklabel(struct disklabel64 *lp)
1228 struct partition64 *pp;
1231 u_int64_t total_size;
1232 u_int64_t current_offset;
1233 u_long total_percent;
1234 int seen_default_offset;
1237 struct partition64 *pp2;
1240 if (lp->d_align < 512 ||
1241 (lp->d_align ^ (lp->d_align - 1)) != lp->d_align * 2 - 1) {
1242 Warning("Illegal alignment specified: %u\n", lp->d_align);
1245 if (lp->d_npartitions > MAXPARTITIONS64) {
1246 Warning("number of partitions (%u) > MAXPARTITIONS (%d)",
1247 lp->d_npartitions, MAXPARTITIONS64);
1250 off = offsetof(struct disklabel64, d_partitions[lp->d_npartitions]);
1251 off = (off + lp->d_align - 1) & ~(int64_t)(lp->d_align - 1);
1253 if (lp->d_bbase < off || lp->d_bbase % lp->d_align) {
1254 Warning("illegal boot2 data base ");
1259 * pbase can be unaligned slice-relative but will be
1260 * aligned physically.
1262 if (lp->d_pbase < lp->d_bbase) {
1263 Warning("illegal partition data base");
1266 if (lp->d_pstop < lp->d_pbase) {
1267 Warning("illegal partition data stop");
1270 if (lp->d_pstop > lp->d_total_size) {
1271 printf("%012jx\n%012jx\n",
1272 (intmax_t)lp->d_pstop, (intmax_t)lp->d_total_size);
1273 Warning("disklabel control info is beyond the total size");
1277 (lp->d_abase < lp->d_pstop ||
1278 lp->d_abase > lp->d_total_size - off)) {
1279 Warning("illegal backup label location");
1283 /* first allocate space to the partitions, then offsets */
1284 total_size = 0; /* in bytes */
1285 total_percent = 0; /* in percent */
1287 /* find all fixed partitions */
1288 for (i = 0; i < (int)lp->d_npartitions; i++) {
1289 pp = &lp->d_partitions[i];
1291 if (part_size_type[i] == '*') {
1292 if (part_offset_type[i] != '*') {
1293 if (total_size < pp->p_boffset)
1294 total_size = pp->p_boffset;
1296 if (hog_part != -1) {
1297 Warning("Too many '*' partitions (%c and %c)",
1298 hog_part + 'a',i + 'a');
1306 if (part_size_type[i] == '%') {
1308 * don't count %'s yet
1310 total_percent += size;
1313 * Value has already been converted
1316 if (size % lp->d_align != 0) {
1317 Warning("partition %c's size is not properly aligned",
1325 /* handle % partitions - note %'s don't need to add up to 100! */
1326 if (total_percent != 0) {
1330 free_space = (int64_t)(lp->d_pstop - lp->d_pbase - total_size);
1331 free_space &= ~(u_int64_t)(lp->d_align - 1);
1333 space_left = free_space;
1334 if (total_percent > 100) {
1335 fprintf(stderr,"total percentage %lu is greater than 100\n",
1340 if (free_space > 0) {
1341 for (i = 0; i < (int)lp->d_npartitions; i++) {
1342 pp = &lp->d_partitions[i];
1343 if (part_set[i] && part_size_type[i] == '%') {
1344 /* careful of overflows! and integer roundoff */
1345 pp->p_bsize = ((double)pp->p_bsize/100) * free_space;
1346 pp->p_bsize = (pp->p_bsize + lp->d_align - 1) & ~(u_int64_t)(lp->d_align - 1);
1347 if ((int64_t)pp->p_bsize > space_left)
1348 pp->p_bsize = (u_int64_t)space_left;
1349 total_size += pp->p_bsize;
1350 space_left -= pp->p_bsize;
1354 fprintf(stderr, "%jd bytes available to give to "
1355 "'*' and '%%' partitions\n",
1356 (intmax_t)free_space);
1358 /* fix? set all % partitions to size 0? */
1361 /* give anything remaining to the hog partition */
1362 if (hog_part != -1) {
1363 off = lp->d_pstop - lp->d_pbase - total_size;
1364 off &= ~(u_int64_t)(lp->d_align - 1);
1365 lp->d_partitions[hog_part].p_bsize = off;
1366 total_size = lp->d_pstop - lp->d_pbase;
1369 /* Now set the offsets for each partition */
1370 current_offset = lp->d_pbase;
1371 seen_default_offset = 0;
1372 for (i = 0; i < (int)lp->d_npartitions; i++) {
1374 pp = &lp->d_partitions[i];
1375 if (pp->p_bsize == 0)
1378 if (part_offset_type[i] == '*') {
1379 pp->p_boffset = current_offset;
1380 seen_default_offset = 1;
1382 /* allow them to be out of order for old-style tables */
1383 if (pp->p_boffset < current_offset &&
1384 seen_default_offset &&
1385 pp->p_fstype != FS_VINUM) {
1387 "Offset 0x%012jx for partition %c overlaps previous partition which ends at 0x%012jx\n",
1388 (intmax_t)pp->p_boffset,
1390 (intmax_t)current_offset);
1392 "Labels with any *'s for offset must be in ascending order by sector\n");
1394 } else if (pp->p_boffset != current_offset &&
1395 seen_default_offset) {
1397 * this may give unneeded warnings if
1398 * partitions are out-of-order
1401 "Offset 0x%012jx for partition %c doesn't match expected value 0x%012jx",
1402 pp->p_boffset, i + 'a',
1403 (intmax_t)current_offset);
1406 current_offset = pp->p_boffset + pp->p_bsize;
1410 for (i = 0; i < (int)lp->d_npartitions; i++) {
1412 pp = &lp->d_partitions[i];
1413 if (pp->p_bsize == 0 && pp->p_boffset != 0)
1414 Warning("partition %c: size 0, but offset 0x%012jx",
1415 part, (intmax_t)pp->p_boffset);
1416 if (pp->p_bsize == 0) {
1420 if (uuid_is_nil(&pp->p_stor_uuid, NULL))
1421 uuid_create(&pp->p_stor_uuid, NULL);
1423 if (pp->p_boffset < lp->d_pbase) {
1425 "partition %c: offset out of bounds (%jd)\n",
1426 part, (intmax_t)(pp->p_boffset - lp->d_pbase));
1429 if (pp->p_boffset > lp->d_pstop) {
1431 "partition %c: offset out of bounds (%jd)\n",
1432 part, (intmax_t)(pp->p_boffset - lp->d_pbase));
1435 if (pp->p_boffset + pp->p_bsize > lp->d_pstop) {
1437 "partition %c: size out of bounds (%jd)\n",
1438 part, (intmax_t)(pp->p_boffset - lp->d_pbase));
1442 /* check for overlaps */
1443 /* this will check for all possible overlaps once and only once */
1444 for (j = 0; j < i; j++) {
1445 pp2 = &lp->d_partitions[j];
1446 if (pp->p_fstype != FS_VINUM &&
1447 pp2->p_fstype != FS_VINUM &&
1448 part_set[i] && part_set[j]) {
1449 if (pp2->p_boffset < pp->p_boffset + pp->p_bsize &&
1450 (pp2->p_boffset + pp2->p_bsize > pp->p_boffset ||
1451 pp2->p_boffset >= pp->p_boffset)) {
1452 fprintf(stderr,"partitions %c and %c overlap!\n",
1459 for (; i < (int)lp->d_npartitions; i++) {
1461 pp = &lp->d_partitions[i];
1462 if (pp->p_bsize || pp->p_boffset)
1463 Warning("unused partition %c: size 0x%012jx "
1465 'a' + i, (intmax_t)pp->p_bsize,
1466 (intmax_t)pp->p_boffset);
1472 * When operating on a "virgin" disk, try getting an initial label
1473 * from the associated device driver. This might work for all device
1474 * drivers that are able to fetch some initial device parameters
1475 * without even having access to a (BSD) disklabel, like SCSI disks,
1476 * most IDE drives, or vn devices.
1478 * The device name must be given in its "canonical" form.
1480 static struct disklabel64 dlab;
1482 struct disklabel64 *
1483 getvirginlabel(void)
1485 struct disklabel64 *dl = &dlab;
1488 if ((f = open(dkname, O_RDONLY)) == -1) {
1489 warn("cannot open %s", dkname);
1494 * Try to use the new get-virgin-label ioctl. If it fails,
1495 * fallback to the old get-disk-info ioctl.
1497 if (ioctl(f, DIOCGDVIRGIN64, dl) < 0) {
1498 l_perror("ioctl DIOCGDVIRGIN64");
1508 Warning(const char *fmt, ...)
1512 fprintf(stderr, "Warning, ");
1514 vfprintf(stderr, fmt, ap);
1515 fprintf(stderr, "\n");
1522 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",
1523 "usage: disklabel64 [-r] disk",
1524 "\t\t(to read label)",
1525 " disklabel64 -w [-r] [-n] disk type [packid]",
1526 "\t\t(to write label with existing boot program)",
1527 " disklabel64 -e [-r] [-n] disk",
1528 "\t\t(to edit label)",
1529 " disklabel64 -R [-r] [-n] disk protofile",
1530 "\t\t(to restore label with existing boot program)",
1531 " disklabel64 -B [-n] [-b boot1 -s boot2] disk [type]",
1532 "\t\t(to install boot program with existing label)",
1533 " disklabel64 -w -B [-n] [-b boot1 -s boot2] disk type [packid]",
1534 "\t\t(to write label and boot program)",
1535 " disklabel64 -R -B [-n] [-b boot1 -s boot2] disk protofile [type]",
1536 "\t\t(to restore label and boot program)",
1537 " disklabel64 [-NW] disk",
1538 "\t\t(to write disable/enable label)");