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>
74 #include <sys/disklabel64.h>
75 #include <sys/diskslice.h>
76 #include <sys/diskmbr.h>
77 #include <sys/dtype.h>
78 #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 (streq(type, "auto"))
350 dp = getvirginlabel();
352 errx(1, "no disktab(5) support yet; only 'auto' allowed");
356 strlcpy((char *)lp->d_packname, name, sizeof(lp->d_packname));
360 writelabel(int f, struct disklabel64 *lp)
362 struct disklabel64 *blp;
368 lpsize = offsetof(struct disklabel64, d_partitions[lp->d_npartitions]);
369 lpcrcsize = lpsize - offsetof(struct disklabel64, d_magic);
372 Warning("write to disk label suppressed - label was as follows:");
376 lp->d_magic = DISKMAGIC64;
378 lp->d_crc = crc32(&lp->d_magic, lpcrcsize);
381 * Make sure the boot area is not too large
384 int lpbsize = (int)(lp->d_pbase - lp->d_bbase);
385 if (lp->d_pbase == 0) {
386 errx(1, "no space was set aside in "
387 "the disklabel for boot2!");
389 if (boot2size > lpbsize) {
390 errx(1, "label did not reserve enough "
391 "space for boot! %d/%d",
397 * First set the kernel disk label,
398 * then write a label to the raw disk.
399 * If the SDINFO ioctl fails because it is
400 * unimplemented, keep going; otherwise, the kernel
401 * consistency checks may prevent us from changing
402 * the current (in-core) label.
404 if (ioctl(f, DIOCSDINFO64, lp) < 0 &&
405 errno != ENODEV && errno != ENOTTY) {
406 l_perror("ioctl DIOCSDINFO");
409 lseek(f, (off_t)0, SEEK_SET);
412 * The disklabel embeds areas which we may not
413 * have wanted to change. Merge those areas in
416 blp = makebootarea(f);
418 bcopy(&lp->d_magic, &blp->d_magic,
420 offsetof(struct disklabel64, d_magic));
424 * write enable label sector before write
425 * (if necessary), disable after writing.
428 if (ioctl(f, DIOCWLABEL, &flag) < 0)
429 warn("ioctl DIOCWLABEL");
431 r = write(f, boot1buf, boot1lsize);
432 if (r != (ssize_t)boot1lsize) {
437 * Output the remainder of the disklabel
440 lseek(f, lp->d_bbase, 0);
441 r = write(f, boot2buf, boot2size);
442 if (r != boot2size) {
448 ioctl(f, DIOCWLABEL, &flag);
449 } else if (ioctl(f, DIOCWDINFO64, lp) < 0) {
450 l_perror("ioctl DIOCWDINFO64");
458 l_perror(const char *s)
463 warnx("%s: no disk label on disk;", s);
464 fprintf(stderr, "add \"-r\" to install initial label\n");
468 warnx("%s: label magic number or checksum is wrong!", s);
469 fprintf(stderr, "(disklabel or kernel is out of date?)\n");
473 warnx("%s: open partition would move or shrink", s);
477 warnx("%s: the disk already has a label of a different type,\n"
478 "probably a 32 bit disklabel. It must be cleaned out "
489 * Fetch disklabel for disk.
490 * Use ioctl to get label unless -r flag is given.
492 static struct disklabel64 *
495 struct disklabel64 *lp;
501 * Allocate space for the label. The boot1 code, if any,
502 * is embedded in the label. The label overlaps the boot1
505 lp = makebootarea(f);
506 lpcrcsize = offsetof(struct disklabel64,
507 d_partitions[lp->d_npartitions]) -
508 offsetof(struct disklabel64, d_magic);
511 if (lp->d_magic != DISKMAGIC64)
512 errx(1, "bad pack magic number");
513 if (lp->d_npartitions > MAXPARTITIONS64 ||
514 savecrc != crc32(&lp->d_magic, lpcrcsize)
516 errx(1, "corrupted disklabel64");
521 * Just use a static structure to hold the label. Note
522 * that DIOCSDINFO64 does not overwrite the boot1 area
523 * even though it is part of the disklabel64 structure.
527 if (ioctl(f, DIOCGDVIRGIN64, lp) < 0) {
528 l_perror("ioctl DIOCGDVIRGIN64");
532 if (ioctl(f, DIOCGDINFO64, lp) < 0) {
533 l_perror("ioctl DIOCGDINFO64");
542 * Construct a boot area for boot1 and boot2 and return the location of
543 * the label within the area. The caller will overwrite the label so
544 * we don't actually have to read it.
546 static struct disklabel64 *
549 struct disklabel64 *lp;
550 struct partinfo info;
556 if (ioctl(f, DIOCGPART, &info) == 0)
557 secsize = info.media_blksize;
561 if (boot1buf == NULL) {
564 rsize = roundup2(sizeof(struct disklabel64), secsize);
565 boot1size = offsetof(struct disklabel64, d_magic);
567 boot1buf = malloc(rsize);
568 bzero(boot1buf, rsize);
569 r = read(f, boot1buf, rsize);
570 if (r != (int)rsize) {
572 err(4, "%s", specname);
575 lp = (void *)boot1buf;
577 if (installboot == 0)
580 if (boot2buf == NULL) {
581 boot2size = BOOT2SIZE64;
582 boot2buf = malloc(boot2size);
583 bzero(boot2buf, boot2size);
587 * If installing the boot code, read it into the appropriate portions
590 if (boot1path == NULL)
591 asprintf(&boot1path, "%s/boot1_64", _PATH_BOOTDIR);
592 if (boot2path == NULL)
593 asprintf(&boot2path, "%s/boot2_64", _PATH_BOOTDIR);
595 if ((fd = open(boot1path, O_RDONLY)) < 0)
596 err(4, "%s", boot1path);
597 if (fstat(fd, &st) < 0)
598 err(4, "%s", boot1path);
599 if (st.st_size > boot1size)
600 err(4, "%s must be exactly %d bytes!", boot1path, boot1size);
601 if (read(fd, boot1buf, boot1size) != boot1size)
602 err(4, "%s must be exactly %d bytes!", boot1path, boot1size);
605 if ((fd = open(boot2path, O_RDONLY)) < 0)
606 err(4, "%s", boot2path);
607 if (fstat(fd, &st) < 0)
608 err(4, "%s", boot2path);
609 if (st.st_size > boot2size)
610 err(4, "%s must be <= %d bytes!", boot2path, boot2size);
611 if ((r = read(fd, boot2buf, boot2size)) < 1)
612 err(4, "%s is empty!", boot2path);
613 boot2size = roundup2(r, secsize);
617 * XXX dangerously dedicated support goes here XXX
623 display(FILE *f, const struct disklabel64 *lp)
625 const struct partition64 *pp;
632 * Use a human readable block size if possible. This is for
633 * display and editing purposes only.
635 if (lp->d_align > 1024)
638 blksize = lp->d_align;
640 fprintf(f, "# %s:\n", specname);
642 fprintf(f, "# Calculated informational fields for the slice:\n");
644 fprintf(f, "# boot space: %10ju bytes\n",
645 (uintmax_t)(lp->d_pbase - lp->d_bbase));
646 fprintf(f, "# data space: %10ju blocks\t# %6.2f MB (%ju bytes)\n",
647 (uintmax_t)(lp->d_pstop - lp->d_pbase) / blksize,
648 (double)(lp->d_pstop - lp->d_pbase) / 1024.0 / 1024.0,
649 (uintmax_t)(lp->d_pstop - lp->d_pbase));
651 fprintf(f, "# NOTE: The partition data base and stop are physically\n");
652 fprintf(f, "# aligned instead of slice-relative aligned.\n");
654 fprintf(f, "# All byte equivalent offsets must be aligned.\n");
657 uuid_to_string(&lp->d_stor_uuid, &str, NULL);
658 fprintf(f, "diskid: %s\n", str ? str : "<unknown>");
661 fprintf(f, "label: %s\n", lp->d_packname);
662 fprintf(f, "boot2 data base: 0x%012jx\n", (uintmax_t)lp->d_bbase);
663 fprintf(f, "partitions data base: 0x%012jx\n", (uintmax_t)lp->d_pbase);
664 fprintf(f, "partitions data stop: 0x%012jx\n", (uintmax_t)lp->d_pstop);
665 fprintf(f, "backup label: 0x%012jx\n", (uintmax_t)lp->d_abase);
666 fprintf(f, "total size: 0x%012jx\t# %6.2f MB\n",
667 (uintmax_t)lp->d_total_size,
668 (double)lp->d_total_size / 1024.0 / 1024.0);
669 fprintf(f, "alignment: %u\n", lp->d_align);
670 fprintf(f, "display block size: %u\t# for partition display and edit only\n",
674 fprintf(f, "%u partitions:\n", lp->d_npartitions);
675 fprintf(f, "# size offset fstype fsuuid\n");
677 for (part = 0; part < lp->d_npartitions; part++) {
678 pp = &lp->d_partitions[part];
679 const u_long onemeg = 1024 * 1024;
681 if (pp->p_bsize == 0)
684 fprintf(f, " %c: ", 'a' + part);
686 if (pp->p_bsize % lp->d_align)
687 fprintf(f, "%10s ", "ILLEGAL");
689 fprintf(f, "%10ju ", (uintmax_t)pp->p_bsize / blksize);
691 if ((pp->p_boffset - lp->d_pbase) % lp->d_align)
692 fprintf(f, "%10s ", "ILLEGAL");
695 (uintmax_t)(pp->p_boffset - lp->d_pbase) / blksize);
697 if (pp->p_fstype < FSMAXTYPES)
698 fprintf(f, "%8.8s", fstypenames[pp->p_fstype]);
700 fprintf(f, "%8d", pp->p_fstype);
701 fprintf(f, "\t# %11.3fMB", (double)pp->p_bsize / onemeg);
704 for (part = 0; part < lp->d_npartitions; part++) {
705 pp = &lp->d_partitions[part];
707 if (pp->p_bsize == 0)
710 if (uuid_is_nil(&lp->d_stor_uuid, NULL) == 0) {
711 fprintf(f, " %c-stor_uuid: ", 'a' + part);
713 uuid_to_string(&pp->p_stor_uuid, &str, NULL);
715 fprintf(f, "%s", str);
722 fprintf(f, "# EXAMPLE\n");
723 fprintf(f, "#a: 4g 0 4.2BSD\n");
724 fprintf(f, "#a: * * 4.2BSD\n");
731 edit(struct disklabel64 *lp, int f)
734 struct disklabel64 label;
737 if ((fd = mkstemp(tmpfil)) == -1 ||
738 (fp = fdopen(fd, "w")) == NULL) {
739 warnx("can't create %s", tmpfil);
747 fp = fopen(tmpfil, "r");
749 warnx("can't reopen %s for reading", tmpfil);
752 bzero((char *)&label, sizeof(label));
753 if (getasciilabel(fp, &label)) {
755 if (writelabel(f, lp) == 0) {
762 printf("re-edit the label? [y]: "); fflush(stdout);
764 if (c != EOF && c != (int)'\n')
765 while (getchar() != (int)'\n')
781 omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP));
782 while ((pid = fork()) < 0) {
783 if (errno == EPROCLIM) {
784 warnx("you have too many processes");
787 if (errno != EAGAIN) {
797 if ((ed = getenv("EDITOR")) == NULL)
799 execlp(ed, ed, tmpfil, NULL);
802 while ((xpid = wait(&status)) >= 0)
813 while (*cp != '\0' && isspace(*cp))
815 if (*cp == '\0' || *cp == '#')
825 while (*cp != '\0' && !isspace(*cp) && *cp != '#')
827 if ((c = *cp) != '\0') {
836 * Read an ascii label in from fd f,
837 * in the same format as that put out by display(),
841 getasciilabel(FILE *f, struct disklabel64 *lp)
845 char *tp, line[BUFSIZ];
847 uint32_t blksize = 0;
849 int lineno = 0, errors = 0;
852 bzero(&part_set, sizeof(part_set));
853 bzero(&part_size_type, sizeof(part_size_type));
854 bzero(&part_offset_type, sizeof(part_offset_type));
855 while (fgets(line, sizeof(line) - 1, f)) {
857 if ((cp = strchr(line,'\n')) != NULL)
862 tp = strchr(cp, ':');
864 fprintf(stderr, "line %d: syntax error\n", lineno);
868 *tp++ = '\0', tp = skip(tp);
869 if (sscanf(cp, "%lu partitions", &v) == 1) {
870 if (v == 0 || v > MAXPARTITIONS64) {
872 "line %d: bad # of partitions\n", lineno);
873 lp->d_npartitions = MAXPARTITIONS64;
876 lp->d_npartitions = v;
882 if (streq(cp, "diskid")) {
884 uuid_from_string(tp, &lp->d_stor_uuid, &status);
885 if (status != uuid_s_ok) {
887 "line %d: %s: illegal UUID\n",
893 if (streq(cp, "label")) {
894 strlcpy((char *)lp->d_packname, tp, sizeof(lp->d_packname));
898 if (streq(cp, "alignment")) {
899 v = strtoul(tp, NULL, 0);
900 if (v <= 0 || (v & DEV_BMASK) != 0 || v > 1024*1024) {
902 "line %d: %s: bad alignment\n",
910 if (streq(cp, "total size")) {
911 vv = strtoull(tp, NULL, 0);
912 if (vv == 0 || vv == (uint64_t)-1) {
913 fprintf(stderr, "line %d: %s: bad %s\n",
917 lp->d_total_size = vv;
921 if (streq(cp, "boot2 data base")) {
922 vv = strtoull(tp, NULL, 0);
923 if (vv == 0 || vv == (uint64_t)-1) {
924 fprintf(stderr, "line %d: %s: bad %s\n",
932 if (streq(cp, "partitions data base")) {
933 vv = strtoull(tp, NULL, 0);
934 if (vv == 0 || vv == (uint64_t)-1) {
935 fprintf(stderr, "line %d: %s: bad %s\n",
943 if (streq(cp, "partitions data stop")) {
944 vv = strtoull(tp, NULL, 0);
945 if (vv == 0 || vv == (uint64_t)-1) {
946 fprintf(stderr, "line %d: %s: bad %s\n",
954 if (streq(cp, "backup label")) {
955 vv = strtoull(tp, NULL, 0);
956 if (vv == 0 || vv == (uint64_t)-1) {
957 fprintf(stderr, "line %d: %s: bad %s\n",
965 if (streq(cp, "display block size")) {
966 v = strtoul(tp, NULL, 0);
967 if (v <= 0 || (v & DEV_BMASK) != 0 || v > 1024*1024) {
968 fprintf(stderr, "line %d: %s: bad %s\n",
977 /* the ':' was removed above */
980 * Handle main partition data, e.g. a:, b:, etc.
982 if (*cp < 'a' || *cp > MAX_PART) {
984 "line %d: %s: Unknown disklabel field\n", lineno,
990 /* Process a partition specification line. */
992 if (part >= lp->d_npartitions) {
994 "line %d: partition name out of range a-%c: %s\n",
995 lineno, 'a' + lp->d_npartitions - 1, cp);
1001 fprintf(stderr, "block size to use for partition "
1002 "display was not specified!\n");
1007 if (strcmp(cp + 1, "-stor_uuid") == 0) {
1008 if (getasciipartuuid(tp, lp, part, lineno, blksize)) {
1013 } else if (cp[1] == 0) {
1015 if (getasciipartspec(tp, lp, part, lineno, blksize)) {
1021 fprintf(stderr, "line %d: %s: Unknown disklabel field\n",
1026 errors += checklabel(lp);
1027 return (errors == 0);
1031 parse_field_val(char **tp, char **cp, u_int64_t *vv, int lineno)
1035 if (*tp == NULL || **tp == 0) {
1036 fprintf(stderr, "line %d: too few numeric fields\n", lineno);
1041 *vv = strtoull(*cp, &tmp, 0);
1042 if (*vv == ULLONG_MAX) {
1043 fprintf(stderr, "line %d: illegal number\n", lineno);
1053 * Read a partition line into partition `part' in the specified disklabel.
1054 * Return 0 on success, 1 on failure.
1057 getasciipartspec(char *tp, struct disklabel64 *lp, int part,
1058 int lineno, uint32_t blksize)
1060 struct partition64 *pp;
1068 pp = &lp->d_partitions[part];
1074 r = parse_field_val(&tp, &cp, &vv, lineno);
1104 r = 0; /* eat the suffix */
1107 Warning("unknown size specifier '%c' (*/%%/K/M/G/T are valid)",
1112 part_size_type[part] = r;
1113 if (vv == 0 && r != '*') {
1115 "line %d: %s: bad partition size (0)\n", lineno, cp);
1118 pp->p_bsize = vv * mpx;
1123 r = parse_field_val(&tp, &cp, &vv, lineno);
1126 part_offset_type[part] = r;
1132 pp->p_boffset = vv * blksize + lp->d_pbase;
1136 "line %d: %s: bad suffix on partition offset (%c)\n",
1146 "line %d: no filesystem type was specified\n", lineno);
1151 for (cpp = fstypenames; cpp < &fstypenames[FSMAXTYPES]; cpp++) {
1152 if (*cpp && strcasecmp(*cpp, cp) == 0)
1156 pp->p_fstype = cpp - fstypenames;
1159 v = strtoul(cp, NULL, 0);
1162 if (v >= FSMAXTYPES) {
1164 "line %d: Warning, unknown filesystem type %s\n",
1173 fprintf(stderr, "line %d: Warning, extra data on line\n",
1180 getasciipartuuid(char *tp, struct disklabel64 *lp, int part,
1181 int lineno, uint32_t blksize __unused)
1183 struct partition64 *pp;
1187 pp = &lp->d_partitions[part];
1191 uuid_from_string(cp, &pp->p_stor_uuid, &status);
1192 if (status != uuid_s_ok) {
1193 fprintf(stderr, "line %d: Illegal storage uuid specification\n",
1201 * Check disklabel for errors and fill in
1202 * derived fields according to supplied values.
1205 checklabel(struct disklabel64 *lp)
1207 struct partition64 *pp;
1210 u_int64_t total_size;
1211 u_int64_t current_offset;
1212 u_long total_percent;
1213 int seen_default_offset;
1216 struct partition64 *pp2;
1219 if (lp->d_align < 512 ||
1220 (lp->d_align ^ (lp->d_align - 1)) != lp->d_align * 2 - 1) {
1221 Warning("Illegal alignment specified: %u\n", lp->d_align);
1224 if (lp->d_npartitions > MAXPARTITIONS64) {
1225 Warning("number of partitions (%u) > MAXPARTITIONS (%d)",
1226 lp->d_npartitions, MAXPARTITIONS64);
1229 off = offsetof(struct disklabel64, d_partitions[lp->d_npartitions]);
1230 off = (off + lp->d_align - 1) & ~(int64_t)(lp->d_align - 1);
1232 if (lp->d_bbase < off || lp->d_bbase % lp->d_align) {
1233 Warning("illegal boot2 data base ");
1238 * pbase can be unaligned slice-relative but will be
1239 * aligned physically.
1241 if (lp->d_pbase < lp->d_bbase) {
1242 Warning("illegal partition data base");
1245 if (lp->d_pstop < lp->d_pbase) {
1246 Warning("illegal partition data stop");
1249 if (lp->d_pstop > lp->d_total_size) {
1250 printf("%012jx\n%012jx\n",
1251 (uintmax_t)lp->d_pstop, (uintmax_t)lp->d_total_size);
1252 Warning("disklabel control info is beyond the total size");
1256 (lp->d_abase < lp->d_pstop ||
1257 lp->d_abase > lp->d_total_size - off)) {
1258 Warning("illegal backup label location");
1262 /* first allocate space to the partitions, then offsets */
1263 total_size = 0; /* in bytes */
1264 total_percent = 0; /* in percent */
1266 /* find all fixed partitions */
1267 for (i = 0; i < (int)lp->d_npartitions; i++) {
1268 pp = &lp->d_partitions[i];
1270 if (part_size_type[i] == '*') {
1271 if (part_offset_type[i] != '*') {
1272 if (total_size < pp->p_boffset)
1273 total_size = pp->p_boffset;
1275 if (hog_part != -1) {
1276 Warning("Too many '*' partitions (%c and %c)",
1277 hog_part + 'a',i + 'a');
1285 if (part_size_type[i] == '%') {
1287 * don't count %'s yet
1289 total_percent += size;
1292 * Value has already been converted
1295 if (size % lp->d_align != 0) {
1296 Warning("partition %c's size is not properly aligned",
1304 /* handle % partitions - note %'s don't need to add up to 100! */
1305 if (total_percent != 0) {
1309 free_space = (int64_t)(lp->d_pstop - lp->d_pbase - total_size);
1310 free_space &= ~(u_int64_t)(lp->d_align - 1);
1312 space_left = free_space;
1313 if (total_percent > 100) {
1314 fprintf(stderr,"total percentage %lu is greater than 100\n",
1319 if (free_space > 0) {
1320 for (i = 0; i < (int)lp->d_npartitions; i++) {
1321 pp = &lp->d_partitions[i];
1322 if (part_set[i] && part_size_type[i] == '%') {
1323 /* careful of overflows! and integer roundoff */
1324 pp->p_bsize = ((double)pp->p_bsize/100) * free_space;
1325 pp->p_bsize = (pp->p_bsize + lp->d_align - 1) & ~(u_int64_t)(lp->d_align - 1);
1326 if ((int64_t)pp->p_bsize > space_left)
1327 pp->p_bsize = (u_int64_t)space_left;
1328 total_size += pp->p_bsize;
1329 space_left -= pp->p_bsize;
1333 fprintf(stderr, "%jd bytes available to give to "
1334 "'*' and '%%' partitions\n",
1335 (intmax_t)free_space);
1337 /* fix? set all % partitions to size 0? */
1340 /* give anything remaining to the hog partition */
1341 if (hog_part != -1) {
1342 off = lp->d_pstop - lp->d_pbase - total_size;
1343 off &= ~(u_int64_t)(lp->d_align - 1);
1344 lp->d_partitions[hog_part].p_bsize = off;
1345 total_size = lp->d_pstop - lp->d_pbase;
1348 /* Now set the offsets for each partition */
1349 current_offset = lp->d_pbase;
1350 seen_default_offset = 0;
1351 for (i = 0; i < (int)lp->d_npartitions; i++) {
1353 pp = &lp->d_partitions[i];
1354 if (pp->p_bsize == 0)
1357 if (part_offset_type[i] == '*') {
1358 pp->p_boffset = current_offset;
1359 seen_default_offset = 1;
1361 /* allow them to be out of order for old-style tables */
1362 if (pp->p_boffset < current_offset &&
1363 seen_default_offset &&
1364 pp->p_fstype != FS_VINUM) {
1366 "Offset 0x%012jx for partition %c overlaps previous partition which ends at 0x%012jx\n",
1367 (uintmax_t)pp->p_boffset,
1369 (uintmax_t)current_offset);
1371 "Labels with any *'s for offset must be in ascending order by sector\n");
1373 } else if (pp->p_boffset != current_offset &&
1374 seen_default_offset) {
1376 * this may give unneeded warnings if
1377 * partitions are out-of-order
1380 "Offset 0x%012jx for partition %c doesn't match expected value 0x%012jx",
1381 pp->p_boffset, i + 'a',
1382 (intmax_t)current_offset);
1385 current_offset = pp->p_boffset + pp->p_bsize;
1389 for (i = 0; i < (int)lp->d_npartitions; i++) {
1391 pp = &lp->d_partitions[i];
1392 if (pp->p_bsize == 0 && pp->p_boffset != 0)
1393 Warning("partition %c: size 0, but offset 0x%012jx",
1394 part, (intmax_t)pp->p_boffset);
1395 if (pp->p_bsize == 0) {
1399 if (uuid_is_nil(&pp->p_stor_uuid, NULL))
1400 uuid_create(&pp->p_stor_uuid, NULL);
1402 if (pp->p_boffset < lp->d_pbase) {
1404 "partition %c: offset out of bounds (%jd)\n",
1405 part, (intmax_t)(pp->p_boffset - lp->d_pbase));
1408 if (pp->p_boffset > lp->d_pstop) {
1410 "partition %c: offset out of bounds (%jd)\n",
1411 part, (intmax_t)(pp->p_boffset - lp->d_pbase));
1414 if (pp->p_boffset + pp->p_bsize > lp->d_pstop) {
1416 "partition %c: size out of bounds (%jd)\n",
1417 part, (intmax_t)(pp->p_boffset - lp->d_pbase));
1421 /* check for overlaps */
1422 /* this will check for all possible overlaps once and only once */
1423 for (j = 0; j < i; j++) {
1424 pp2 = &lp->d_partitions[j];
1425 if (pp->p_fstype != FS_VINUM &&
1426 pp2->p_fstype != FS_VINUM &&
1427 part_set[i] && part_set[j]) {
1428 if (pp2->p_boffset < pp->p_boffset + pp->p_bsize &&
1429 (pp2->p_boffset + pp2->p_bsize > pp->p_boffset ||
1430 pp2->p_boffset >= pp->p_boffset)) {
1431 fprintf(stderr,"partitions %c and %c overlap!\n",
1438 for (; i < (int)lp->d_npartitions; i++) {
1440 pp = &lp->d_partitions[i];
1441 if (pp->p_bsize || pp->p_boffset)
1442 Warning("unused partition %c: size 0x%012jx "
1444 'a' + i, (intmax_t)pp->p_bsize,
1445 (intmax_t)pp->p_boffset);
1451 * When operating on a "virgin" disk, try getting an initial label
1452 * from the associated device driver. This might work for all device
1453 * drivers that are able to fetch some initial device parameters
1454 * without even having access to a (BSD) disklabel, like SCSI disks,
1455 * most IDE drives, or vn devices.
1457 * The device name must be given in its "canonical" form.
1459 static struct disklabel64 dlab;
1461 static struct disklabel64 *
1462 getvirginlabel(void)
1464 struct disklabel64 *dl = &dlab;
1467 if ((f = open(dkname, O_RDONLY)) == -1) {
1468 warn("cannot open %s", dkname);
1473 * Generate a virgin disklabel via ioctl
1475 if (ioctl(f, DIOCGDVIRGIN64, dl) < 0) {
1476 l_perror("ioctl DIOCGDVIRGIN64");
1486 Warning(const char *fmt, ...)
1490 fprintf(stderr, "Warning, ");
1492 vfprintf(stderr, fmt, ap);
1493 fprintf(stderr, "\n");
1500 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",
1501 "usage: disklabel64 [-r] disk",
1502 "\t\t(to read label)",
1503 " disklabel64 -w [-r] [-n] disk [type [packid]]",
1504 "\t\t(to write label with existing boot program)",
1505 " disklabel64 -e [-r] [-n] disk",
1506 "\t\t(to edit label)",
1507 " disklabel64 -R [-r] [-n] disk protofile",
1508 "\t\t(to restore label with existing boot program)",
1509 " disklabel64 -B [-n] [-b boot1 -s boot2] disk [type]",
1510 "\t\t(to install boot program with existing label)",
1511 " disklabel64 -w -B [-n] [-b boot1 -s boot2] disk [type [packid]]",
1512 "\t\t(to write label and boot program)",
1513 " disklabel64 -R -B [-n] [-b boot1 -s boot2] disk protofile [type]",
1514 "\t\t(to restore label and boot program)",
1515 " disklabel64 [-NW] disk",
1516 "\t\t(to write disable/enable label)");