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- /*
- * Copyright (c) 1987 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Symmetric Computer Systems.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #ifndef lint
- char copyright[] =
- "@(#) Copyright (c) 1987 The Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- #ifndef lint
- static char sccsid[] = "@(#)disklabel.c 5.20 (Berkeley) 2/9/91";
- /* from static char sccsid[] = "@(#)disklabel.c 1.2 (Symmetric) 11/28/85"; */
- #endif /* not lint */
-
- #include <sys/param.h>
- #include <sys/signal.h>
- #include <sys/errno.h>
- #include <sys/file.h>
- #include <sys/ioctl.h>
- #include <ufs/fs.h>
- #include <string.h>
- #define DKTYPENAMES
- #include <sys/disklabel.h>
- #include <stdio.h>
- #include <ctype.h>
- #include "pathnames.h"
-
- /*
- * Disklabel: read and write disklabels.
- * The label is usually placed on one of the first sectors of the disk.
- * Many machines (VAX 11/750) also place a bootstrap in the same area,
- * in which case the label is embedded in the bootstrap.
- * The bootstrap source must leave space at the proper offset
- * for the label on such machines.
- */
-
- #if defined(vax) || defined(i386)
- #define RAWPARTITION 'c'
- #else
- #define RAWPARTITION 'a'
- #endif
-
- #ifndef BBSIZE
- #define BBSIZE 8192 /* size of boot area, with label */
- #endif
-
- #if defined(vax) || defined(i386)
- #define BOOT /* also have bootstrap in "boot area" */
- #define BOOTDIR _PATH_BOOTDIR /* source of boot binaries */
- #else
- #ifdef lint
- #define BOOT
- #endif
- #endif
-
- #define DEFEDITOR _PATH_VI
- #define streq(a,b) (strcmp(a,b) == 0)
-
- #ifdef BOOT
- char *xxboot;
- char *bootxx;
- #endif
-
- char *dkname;
- char *specname;
- char tmpfil[] = _PATH_TMP;
-
- extern int errno;
- char namebuf[BBSIZE], *np = namebuf;
- struct disklabel lab;
- struct disklabel *readlabel(), *makebootarea();
- char bootarea[BBSIZE];
- char boot0[MAXPATHLEN];
- char boot1[MAXPATHLEN];
-
- enum { UNSPEC, EDIT, NOWRITE, READ, RESTORE, WRITE, WRITEABLE } op = UNSPEC;
-
- int rflag;
-
- #ifdef DEBUG
- int debug;
- #endif
-
- main(argc, argv)
- int argc;
- char *argv[];
- {
- extern int optind;
- register struct disklabel *lp;
- FILE *t;
- int ch, f, error = 0;
- char *name = 0, *type;
-
- while ((ch = getopt(argc, argv, "NRWerw")) != EOF)
- switch (ch) {
- case 'N':
- if (op != UNSPEC)
- usage();
- op = NOWRITE;
- break;
- case 'R':
- if (op != UNSPEC)
- usage();
- op = RESTORE;
- break;
- case 'W':
- if (op != UNSPEC)
- usage();
- op = WRITEABLE;
- break;
- case 'e':
- if (op != UNSPEC)
- usage();
- op = EDIT;
- break;
- case 'r':
- ++rflag;
- break;
- case 'w':
- if (op != UNSPEC)
- usage();
- op = WRITE;
- break;
- #ifdef DEBUG
- case 'd':
- debug++;
- break;
- #endif
- case '?':
- default:
- usage();
- }
- argc -= optind;
- argv += optind;
- if (op == UNSPEC)
- op = READ;
- if (argc < 1)
- usage();
-
- dkname = argv[0];
- if (dkname[0] != '/') {
- (void)sprintf(np, "%s/r%s%c", _PATH_DEV, dkname, RAWPARTITION);
- specname = np;
- np += strlen(specname) + 1;
- } else
- specname = dkname;
- f = open(specname, op == READ ? O_RDONLY : O_RDWR);
- if (f < 0 && errno == ENOENT && dkname[0] != '/') {
- (void)sprintf(specname, "%s/r%s", _PATH_DEV, dkname);
- np = namebuf + strlen(specname) + 1;
- f = open(specname, op == READ ? O_RDONLY : O_RDWR);
- }
- if (f < 0)
- Perror(specname);
-
- switch(op) {
- case EDIT:
- if (argc != 1)
- usage();
- lp = readlabel(f);
- error = edit(lp, f);
- break;
- case NOWRITE: {
- int flag = 0;
- if (ioctl(f, DIOCWLABEL, (char *)&flag) < 0)
- Perror("ioctl DIOCWLABEL");
- break;
- }
- case READ:
- if (argc != 1)
- usage();
- lp = readlabel(f);
- display(stdout, lp);
- error = checklabel(lp);
- break;
- case RESTORE:
- #ifdef BOOT
- if (rflag) {
- if (argc == 4) { /* [ priboot secboot ] */
- xxboot = argv[2];
- bootxx = argv[3];
- lab.d_secsize = DEV_BSIZE; /* XXX */
- lab.d_bbsize = BBSIZE; /* XXX */
- }
- else if (argc == 3) /* [ disktype ] */
- makelabel(argv[2], (char *)NULL, &lab);
- else {
- fprintf(stderr,
- "Must specify either disktype or bootfiles with -r flag of RESTORE option\n");
- exit(1);
- }
- }
- else
- #endif
- if (argc != 2)
- usage();
- lp = makebootarea(bootarea, &lab);
- if (!(t = fopen(argv[1],"r")))
- Perror(argv[1]);
- if (getasciilabel(t, lp))
- error = writelabel(f, bootarea, lp);
- break;
- case WRITE:
- type = argv[1];
- #ifdef BOOT
- if (argc > 5 || argc < 2)
- usage();
- if (argc > 3) {
- bootxx = argv[--argc];
- xxboot = argv[--argc];
- }
- #else
- if (argc > 3 || argc < 2)
- usage();
- #endif
- if (argc > 2)
- name = argv[--argc];
- makelabel(type, name, &lab);
- lp = makebootarea(bootarea, &lab);
- *lp = lab;
- if (checklabel(lp) == 0)
- error = writelabel(f, bootarea, lp);
- break;
- case WRITEABLE: {
- int flag = 1;
- if (ioctl(f, DIOCWLABEL, (char *)&flag) < 0)
- Perror("ioctl DIOCWLABEL");
- break;
- }
- }
- exit(error);
- }
-
- /*
- * Construct a prototype disklabel from /etc/disktab. As a side
- * effect, set the names of the primary and secondary boot files
- * if specified.
- */
- makelabel(type, name, lp)
- char *type, *name;
- register struct disklabel *lp;
- {
- register struct disklabel *dp;
- char *strcpy();
-
- dp = getdiskbyname(type);
- if (dp == NULL) {
- fprintf(stderr, "%s: unknown disk type\n", type);
- exit(1);
- }
- *lp = *dp;
- #ifdef BOOT
- /*
- * Check if disktab specifies the bootstraps (b0 or b1).
- */
- if (!xxboot && lp->d_boot0) {
- if (*lp->d_boot0 != '/')
- (void)sprintf(boot0, "%s/%s", BOOTDIR, lp->d_boot0);
- else
- (void)strcpy(boot0, lp->d_boot0);
- xxboot = boot0;
- }
- if (!bootxx && lp->d_boot1) {
- if (*lp->d_boot1 != '/')
- (void)sprintf(boot1, "%s/%s", BOOTDIR, lp->d_boot1);
- else
- (void)strcpy(boot1, lp->d_boot1);
- bootxx = boot1;
- }
- /*
- * If bootstraps not specified anywhere, makebootarea()
- * will choose ones based on the name of the disk special
- * file. E.g. /dev/ra0 -> raboot, bootra
- */
- #endif /*BOOT*/
- /* d_packname is union d_boot[01], so zero */
- bzero(lp->d_packname, sizeof(lp->d_packname));
- if (name)
- (void)strncpy(lp->d_packname, name, sizeof(lp->d_packname));
- }
-
- writelabel(f, boot, lp)
- int f;
- char *boot;
- register struct disklabel *lp;
- {
- register int i;
- int flag;
- off_t lseek();
-
- lp->d_magic = DISKMAGIC;
- lp->d_magic2 = DISKMAGIC;
- lp->d_checksum = 0;
- lp->d_checksum = dkcksum(lp);
- if (rflag) {
- /*
- * First set the kernel disk label,
- * then write a label to the raw disk.
- * If the SDINFO ioctl fails because it is unimplemented,
- * keep going; otherwise, the kernel consistency checks
- * may prevent us from changing the current (in-core)
- * label.
- */
- if (ioctl(f, DIOCSDINFO, lp) < 0 &&
- errno != ENODEV && errno != ENOTTY) {
- l_perror("ioctl DIOCSDINFO");
- return (1);
- }
- (void)lseek(f, (off_t)0, L_SET);
- /*
- * write enable label sector before write (if necessary),
- * disable after writing.
- */
- flag = 1;
- if (ioctl(f, DIOCWLABEL, &flag) < 0)
- perror("ioctl DIOCWLABEL");
- if (write(f, boot, lp->d_bbsize) != lp->d_bbsize) {
- perror("write");
- return (1);
- }
- flag = 0;
- (void) ioctl(f, DIOCWLABEL, &flag);
- } else if (ioctl(f, DIOCWDINFO, lp) < 0) {
- l_perror("ioctl DIOCWDINFO");
- return (1);
- }
- #ifdef vax
- if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) {
- daddr_t alt;
-
- alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors;
- for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) {
- (void)lseek(f, (off_t)((alt + i) * lp->d_secsize), L_SET);
- if (write(f, boot, lp->d_secsize) < lp->d_secsize) {
- int oerrno = errno;
- fprintf(stderr, "alternate label %d ", i/2);
- errno = oerrno;
- perror("write");
- }
- }
- }
- #endif
- return (0);
- }
-
- l_perror(s)
- char *s;
- {
- int saverrno = errno;
-
- fprintf(stderr, "disklabel: %s: ", s);
-
- switch (saverrno) {
-
- case ESRCH:
- fprintf(stderr, "No disk label on disk;\n");
- fprintf(stderr,
- "use \"disklabel -r\" to install initial label\n");
- break;
-
- case EINVAL:
- fprintf(stderr, "Label magic number or checksum is wrong!\n");
- fprintf(stderr, "(disklabel or kernel is out of date?)\n");
- break;
-
- case EBUSY:
- fprintf(stderr, "Open partition would move or shrink\n");
- break;
-
- case EXDEV:
- fprintf(stderr,
- "Labeled partition or 'a' partition must start at beginning of disk\n");
- break;
-
- default:
- errno = saverrno;
- perror((char *)NULL);
- break;
- }
- }
-
- /*
- * Fetch disklabel for disk.
- * Use ioctl to get label unless -r flag is given.
- */
- struct disklabel *
- readlabel(f)
- int f;
- {
- register struct disklabel *lp;
-
- if (rflag) {
- if (read(f, bootarea, BBSIZE) < BBSIZE)
- Perror(specname);
- for (lp = (struct disklabel *)bootarea;
- lp <= (struct disklabel *)(bootarea + BBSIZE - sizeof(*lp));
- lp = (struct disklabel *)((char *)lp + 16))
- if (lp->d_magic == DISKMAGIC &&
- lp->d_magic2 == DISKMAGIC)
- break;
- if (lp > (struct disklabel *)(bootarea+BBSIZE-sizeof(*lp)) ||
- lp->d_magic != DISKMAGIC || lp->d_magic2 != DISKMAGIC ||
- dkcksum(lp) != 0) {
- fprintf(stderr,
- "Bad pack magic number (label is damaged, or pack is unlabeled)\n");
- /* lp = (struct disklabel *)(bootarea + LABELOFFSET); */
- exit (1);
- }
- } else {
- lp = &lab;
- if (ioctl(f, DIOCGDINFO, lp) < 0)
- Perror("ioctl DIOCGDINFO");
- }
- return (lp);
- }
-
- struct disklabel *
- makebootarea(boot, dp)
- char *boot;
- register struct disklabel *dp;
- {
- struct disklabel *lp;
- register char *p;
- int b;
- #ifdef BOOT
- char *dkbasename;
- #endif /*BOOT*/
-
- lp = (struct disklabel *)(boot + (LABELSECTOR * dp->d_secsize) +
- LABELOFFSET);
- #ifdef BOOT
- if (!rflag)
- return (lp);
-
- if (xxboot == NULL || bootxx == NULL) {
- dkbasename = np;
- if ((p = rindex(dkname, '/')) == NULL)
- p = dkname;
- else
- p++;
- while (*p && !isdigit(*p))
- *np++ = *p++;
- *np++ = '\0';
-
- if (xxboot == NULL) {
- (void)sprintf(np, "%s/%sboot", BOOTDIR, dkbasename);
- if (access(np, F_OK) < 0 && dkbasename[0] == 'r')
- dkbasename++;
- xxboot = np;
- (void)sprintf(xxboot, "%s/%sboot", BOOTDIR, dkbasename);
- np += strlen(xxboot) + 1;
- }
- if (bootxx == NULL) {
- (void)sprintf(np, "%s/boot%s", BOOTDIR, dkbasename);
- if (access(np, F_OK) < 0 && dkbasename[0] == 'r')
- dkbasename++;
- bootxx = np;
- (void)sprintf(bootxx, "%s/boot%s", BOOTDIR, dkbasename);
- np += strlen(bootxx) + 1;
- }
- }
- #ifdef DEBUG
- if (debug)
- fprintf(stderr, "bootstraps: xxboot = %s, bootxx = %s\n",
- xxboot, bootxx);
- #endif
-
- b = open(xxboot, O_RDONLY);
- if (b < 0)
- Perror(xxboot);
- if (read(b, boot, (int)dp->d_secsize) < 0)
- Perror(xxboot);
- close(b);
- b = open(bootxx, O_RDONLY);
- if (b < 0)
- Perror(bootxx);
- if (read(b, &boot[dp->d_secsize], (int)(dp->d_bbsize-dp->d_secsize)) < 0)
- Perror(bootxx);
- (void)close(b);
- #endif /*BOOT*/
-
- for (p = (char *)lp; p < (char *)lp + sizeof(struct disklabel); p++)
- if (*p) {
- fprintf(stderr,
- "Bootstrap doesn't leave room for disk label\n");
- exit(2);
- }
- return (lp);
- }
-
- display(f, lp)
- FILE *f;
- register struct disklabel *lp;
- {
- register int i, j;
- register struct partition *pp;
-
- fprintf(f, "# %s:\n", specname);
- if ((unsigned) lp->d_type < DKMAXTYPES)
- fprintf(f, "type: %s\n", dktypenames[lp->d_type]);
- else
- fprintf(f, "type: %d\n", lp->d_type);
- fprintf(f, "disk: %.*s\n", sizeof(lp->d_typename), lp->d_typename);
- fprintf(f, "label: %.*s\n", sizeof(lp->d_packname), lp->d_packname);
- fprintf(f, "flags:");
- if (lp->d_flags & D_REMOVABLE)
- fprintf(f, " removeable");
- if (lp->d_flags & D_ECC)
- fprintf(f, " ecc");
- if (lp->d_flags & D_BADSECT)
- fprintf(f, " badsect");
- fprintf(f, "\n");
- fprintf(f, "bytes/sector: %d\n", lp->d_secsize);
- fprintf(f, "sectors/track: %d\n", lp->d_nsectors);
- fprintf(f, "tracks/cylinder: %d\n", lp->d_ntracks);
- fprintf(f, "sectors/cylinder: %d\n", lp->d_secpercyl);
- fprintf(f, "cylinders: %d\n", lp->d_ncylinders);
- fprintf(f, "rpm: %d\n", lp->d_rpm);
- fprintf(f, "interleave: %d\n", lp->d_interleave);
- fprintf(f, "trackskew: %d\n", lp->d_trackskew);
- fprintf(f, "cylinderskew: %d\n", lp->d_cylskew);
- fprintf(f, "headswitch: %d\t\t# milliseconds\n", lp->d_headswitch);
- fprintf(f, "track-to-track seek: %d\t# milliseconds\n", lp->d_trkseek);
- fprintf(f, "drivedata: ");
- for (i = NDDATA - 1; i >= 0; i--)
- if (lp->d_drivedata[i])
- break;
- if (i < 0)
- i = 0;
- for (j = 0; j <= i; j++)
- fprintf(f, "%d ", lp->d_drivedata[j]);
- fprintf(f, "\n\n%d partitions:\n", lp->d_npartitions);
- fprintf(f,
- "# size offset fstype [fsize bsize cpg]\n");
- pp = lp->d_partitions;
- for (i = 0; i < lp->d_npartitions; i++, pp++) {
- if (pp->p_size) {
- fprintf(f, " %c: %8d %8d ", 'a' + i,
- pp->p_size, pp->p_offset);
- if ((unsigned) pp->p_fstype < FSMAXTYPES)
- fprintf(f, "%8.8s", fstypenames[pp->p_fstype]);
- else
- fprintf(f, "%8d", pp->p_fstype);
- switch (pp->p_fstype) {
-
- case FS_UNUSED: /* XXX */
- fprintf(f, " %5d %5d %5.5s ",
- pp->p_fsize, pp->p_fsize * pp->p_frag, "");
- break;
-
- case FS_BSDFFS:
- fprintf(f, " %5d %5d %5d ",
- pp->p_fsize, pp->p_fsize * pp->p_frag,
- pp->p_cpg);
- break;
-
- default:
- fprintf(f, "%20.20s", "");
- break;
- }
- fprintf(f, "\t# (Cyl. %4d",
- pp->p_offset / lp->d_secpercyl);
- if (pp->p_offset % lp->d_secpercyl)
- putc('*', f);
- else
- putc(' ', f);
- fprintf(f, "- %d",
- (pp->p_offset +
- pp->p_size + lp->d_secpercyl - 1) /
- lp->d_secpercyl - 1);
- if (pp->p_size % lp->d_secpercyl)
- putc('*', f);
- fprintf(f, ")\n");
- }
- }
- fflush(f);
- }
-
- edit(lp, f)
- struct disklabel *lp;
- int f;
- {
- register int c;
- struct disklabel label;
- FILE *fd;
- char *mktemp();
-
- (void) mktemp(tmpfil);
- fd = fopen(tmpfil, "w");
- if (fd == NULL) {
- fprintf(stderr, "%s: Can't create\n", tmpfil);
- return (1);
- }
- (void)fchmod(fd, 0600);
- display(fd, lp);
- fclose(fd);
- for (;;) {
- if (!editit())
- break;
- fd = fopen(tmpfil, "r");
- if (fd == NULL) {
- fprintf(stderr, "%s: Can't reopen for reading\n",
- tmpfil);
- break;
- }
- bzero((char *)&label, sizeof(label));
- if (getasciilabel(fd, &label)) {
- *lp = label;
- if (writelabel(f, bootarea, lp) == 0) {
- (void) unlink(tmpfil);
- return (0);
- }
- }
- printf("re-edit the label? [y]: "); fflush(stdout);
- c = getchar();
- if (c != EOF && c != (int)'\n')
- while (getchar() != (int)'\n')
- ;
- if (c == (int)'n')
- break;
- }
- (void) unlink(tmpfil);
- return (1);
- }
-
- editit()
- {
- register int pid, xpid;
- int stat, omask;
- extern char *getenv();
-
- omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP));
- while ((pid = fork()) < 0) {
- extern int errno;
-
- if (errno == EPROCLIM) {
- fprintf(stderr, "You have too many processes\n");
- return(0);
- }
- if (errno != EAGAIN) {
- perror("fork");
- return(0);
- }
- sleep(1);
- }
- if (pid == 0) {
- register char *ed;
-
- sigsetmask(omask);
- setgid(getgid());
- setuid(getuid());
- if ((ed = getenv("EDITOR")) == (char *)0)
- ed = DEFEDITOR;
- execlp(ed, ed, tmpfil, 0);
- perror(ed);
- exit(1);
- }
- while ((xpid = wait(&stat)) >= 0)
- if (xpid == pid)
- break;
- sigsetmask(omask);
- return(!stat);
- }
-
- char *
- skip(cp)
- register char *cp;
- {
-
- while (*cp != '\0' && isspace(*cp))
- cp++;
- if (*cp == '\0' || *cp == '#')
- return ((char *)NULL);
- return (cp);
- }
-
- char *
- word(cp)
- register char *cp;
- {
- register char c;
-
- while (*cp != '\0' && !isspace(*cp) && *cp != '#')
- cp++;
- if ((c = *cp) != '\0') {
- *cp++ = '\0';
- if (c != '#')
- return (skip(cp));
- }
- return ((char *)NULL);
- }
-
- /*
- * Read an ascii label in from fd f,
- * in the same format as that put out by display(),
- * and fill in lp.
- */
- getasciilabel(f, lp)
- FILE *f;
- register struct disklabel *lp;
- {
- register char **cpp, *cp;
- register struct partition *pp;
- char *tp, *s, line[BUFSIZ];
- int v, lineno = 0, errors = 0;
-
- lp->d_bbsize = BBSIZE; /* XXX */
- lp->d_sbsize = SBSIZE; /* XXX */
- while (fgets(line, sizeof(line) - 1, f)) {
- lineno++;
- if (cp = index(line,'\n'))
- *cp = '\0';
- cp = skip(line);
- if (cp == NULL)
- continue;
- tp = index(cp, ':');
- if (tp == NULL) {
- fprintf(stderr, "line %d: syntax error\n", lineno);
- errors++;
- continue;
- }
- *tp++ = '\0', tp = skip(tp);
- if (streq(cp, "type")) {
- if (tp == NULL)
- tp = "unknown";
- cpp = dktypenames;
- for (; cpp < &dktypenames[DKMAXTYPES]; cpp++)
- if ((s = *cpp) && streq(s, tp)) {
- lp->d_type = cpp - dktypenames;
- goto next;
- }
- v = atoi(tp);
- if ((unsigned)v >= DKMAXTYPES)
- fprintf(stderr, "line %d:%s %d\n", lineno,
- "Warning, unknown disk type", v);
- lp->d_type = v;
- continue;
- }
- if (streq(cp, "flags")) {
- for (v = 0; (cp = tp) && *cp != '\0';) {
- tp = word(cp);
- if (streq(cp, "removeable"))
- v |= D_REMOVABLE;
- else if (streq(cp, "ecc"))
- v |= D_ECC;
- else if (streq(cp, "badsect"))
- v |= D_BADSECT;
- else {
- fprintf(stderr,
- "line %d: %s: bad flag\n",
- lineno, cp);
- errors++;
- }
- }
- lp->d_flags = v;
- continue;
- }
- if (streq(cp, "drivedata")) {
- register int i;
-
- for (i = 0; (cp = tp) && *cp != '\0' && i < NDDATA;) {
- lp->d_drivedata[i++] = atoi(cp);
- tp = word(cp);
- }
- continue;
- }
- if (sscanf(cp, "%d partitions", &v) == 1) {
- if (v == 0 || (unsigned)v > MAXPARTITIONS) {
- fprintf(stderr,
- "line %d: bad # of partitions\n", lineno);
- lp->d_npartitions = MAXPARTITIONS;
- errors++;
- } else
- lp->d_npartitions = v;
- continue;
- }
- if (tp == NULL)
- tp = "";
- if (streq(cp, "disk")) {
- strncpy(lp->d_typename, tp, sizeof (lp->d_typename));
- continue;
- }
- if (streq(cp, "label")) {
- strncpy(lp->d_packname, tp, sizeof (lp->d_packname));
- continue;
- }
- if (streq(cp, "bytes/sector")) {
- v = atoi(tp);
- if (v <= 0 || (v % 512) != 0) {
- fprintf(stderr,
- "line %d: %s: bad sector size\n",
- lineno, tp);
- errors++;
- } else
- lp->d_secsize = v;
- continue;
- }
- if (streq(cp, "sectors/track")) {
- v = atoi(tp);
- if (v <= 0) {
- fprintf(stderr, "line %d: %s: bad %s\n",
- lineno, tp, cp);
- errors++;
- } else
- lp->d_nsectors = v;
- continue;
- }
- if (streq(cp, "sectors/cylinder")) {
- v = atoi(tp);
- if (v <= 0) {
- fprintf(stderr, "line %d: %s: bad %s\n",
- lineno, tp, cp);
- errors++;
- } else
- lp->d_secpercyl = v;
- continue;
- }
- if (streq(cp, "tracks/cylinder")) {
- v = atoi(tp);
- if (v <= 0) {
- fprintf(stderr, "line %d: %s: bad %s\n",
- lineno, tp, cp);
- errors++;
- } else
- lp->d_ntracks = v;
- continue;
- }
- if (streq(cp, "cylinders")) {
- v = atoi(tp);
- if (v <= 0) {
- fprintf(stderr, "line %d: %s: bad %s\n",
- lineno, tp, cp);
- errors++;
- } else
- lp->d_ncylinders = v;
- continue;
- }
- if (streq(cp, "rpm")) {
- v = atoi(tp);
- if (v <= 0) {
- fprintf(stderr, "line %d: %s: bad %s\n",
- lineno, tp, cp);
- errors++;
- } else
- lp->d_rpm = v;
- continue;
- }
- if (streq(cp, "interleave")) {
- v = atoi(tp);
- if (v <= 0) {
- fprintf(stderr, "line %d: %s: bad %s\n",
- lineno, tp, cp);
- errors++;
- } else
- lp->d_interleave = v;
- continue;
- }
- if (streq(cp, "trackskew")) {
- v = atoi(tp);
- if (v < 0) {
- fprintf(stderr, "line %d: %s: bad %s\n",
- lineno, tp, cp);
- errors++;
- } else
- lp->d_trackskew = v;
- continue;
- }
- if (streq(cp, "cylinderskew")) {
- v = atoi(tp);
- if (v < 0) {
- fprintf(stderr, "line %d: %s: bad %s\n",
- lineno, tp, cp);
- errors++;
- } else
- lp->d_cylskew = v;
- continue;
- }
- if (streq(cp, "headswitch")) {
- v = atoi(tp);
- if (v < 0) {
- fprintf(stderr, "line %d: %s: bad %s\n",
- lineno, tp, cp);
- errors++;
- } else
- lp->d_headswitch = v;
- continue;
- }
- if (streq(cp, "track-to-track seek")) {
- v = atoi(tp);
- if (v < 0) {
- fprintf(stderr, "line %d: %s: bad %s\n",
- lineno, tp, cp);
- errors++;
- } else
- lp->d_trkseek = v;
- continue;
- }
- if ('a' <= *cp && *cp <= 'z' && cp[1] == '\0') {
- unsigned part = *cp - 'a';
-
- if (part > lp->d_npartitions) {
- fprintf(stderr,
- "line %d: bad partition name\n", lineno);
- errors++;
- continue;
- }
- pp = &lp->d_partitions[part];
- #define NXTNUM(n) { \
- cp = tp, tp = word(cp); \
- if (tp == NULL) \
- tp = cp; \
- (n) = atoi(cp); \
- }
-
- NXTNUM(v);
- if (v < 0) {
- fprintf(stderr,
- "line %d: %s: bad partition size\n",
- lineno, cp);
- errors++;
- } else
- pp->p_size = v;
- NXTNUM(v);
- if (v < 0) {
- fprintf(stderr,
- "line %d: %s: bad partition offset\n",
- lineno, cp);
- errors++;
- } else
- pp->p_offset = v;
- cp = tp, tp = word(cp);
- cpp = fstypenames;
- for (; cpp < &fstypenames[FSMAXTYPES]; cpp++)
- if ((s = *cpp) && streq(s, cp)) {
- pp->p_fstype = cpp - fstypenames;
- goto gottype;
- }
- if (isdigit(*cp))
- v = atoi(cp);
- else
- v = FSMAXTYPES;
- if ((unsigned)v >= FSMAXTYPES) {
- fprintf(stderr, "line %d: %s %s\n", lineno,
- "Warning, unknown filesystem type", cp);
- v = FS_UNUSED;
- }
- pp->p_fstype = v;
- gottype:
-
- switch (pp->p_fstype) {
-
- case FS_UNUSED: /* XXX */
- NXTNUM(pp->p_fsize);
- if (pp->p_fsize == 0)
- break;
- NXTNUM(v);
- pp->p_frag = v / pp->p_fsize;
- break;
-
- case FS_BSDFFS:
- NXTNUM(pp->p_fsize);
- if (pp->p_fsize == 0)
- break;
- NXTNUM(v);
- pp->p_frag = v / pp->p_fsize;
- NXTNUM(pp->p_cpg);
- break;
-
- default:
- break;
- }
- continue;
- }
- fprintf(stderr, "line %d: %s: Unknown disklabel field\n",
- lineno, cp);
- errors++;
- next:
- ;
- }
- errors += checklabel(lp);
- return (errors == 0);
- }
-
- /*
- * Check disklabel for errors and fill in
- * derived fields according to supplied values.
- */
- checklabel(lp)
- register struct disklabel *lp;
- {
- register struct partition *pp;
- int i, errors = 0;
- char part;
-
- if (lp->d_secsize == 0) {
- fprintf(stderr, "sector size %d\n", lp->d_secsize);
- return (1);
- }
- if (lp->d_nsectors == 0) {
- fprintf(stderr, "sectors/track %d\n", lp->d_nsectors);
- return (1);
- }
- if (lp->d_ntracks == 0) {
- fprintf(stderr, "tracks/cylinder %d\n", lp->d_ntracks);
- return (1);
- }
- if (lp->d_ncylinders == 0) {
- fprintf(stderr, "cylinders/unit %d\n", lp->d_ncylinders);
- errors++;
- }
- if (lp->d_rpm == 0)
- Warning("revolutions/minute %d\n", lp->d_rpm);
- if (lp->d_secpercyl == 0)
- lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks;
- if (lp->d_secperunit == 0)
- lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders;
- if (lp->d_bbsize == 0) {
- fprintf(stderr, "boot block size %d\n", lp->d_bbsize);
- errors++;
- } else if (lp->d_bbsize % lp->d_secsize)
- Warning("boot block size %% sector-size != 0\n");
- if (lp->d_sbsize == 0) {
- fprintf(stderr, "super block size %d\n", lp->d_sbsize);
- errors++;
- } else if (lp->d_sbsize % lp->d_secsize)
- Warning("super block size %% sector-size != 0\n");
- if (lp->d_npartitions > MAXPARTITIONS)
- Warning("number of partitions (%d) > MAXPARTITIONS (%d)\n",
- lp->d_npartitions, MAXPARTITIONS);
- for (i = 0; i < lp->d_npartitions; i++) {
- part = 'a' + i;
- pp = &lp->d_partitions[i];
- if (pp->p_size == 0 && pp->p_offset != 0)
- Warning("partition %c: size 0, but offset %d\n",
- part, pp->p_offset);
- #ifdef notdef
- if (pp->p_size % lp->d_secpercyl)
- Warning("partition %c: size %% cylinder-size != 0\n",
- part);
- if (pp->p_offset % lp->d_secpercyl)
- Warning("partition %c: offset %% cylinder-size != 0\n",
- part);
- #endif
- if (pp->p_offset > lp->d_secperunit) {
- fprintf(stderr,
- "partition %c: offset past end of unit\n", part);
- errors++;
- }
- if (pp->p_offset + pp->p_size > lp->d_secperunit) {
- fprintf(stderr,
- "partition %c: partition extends past end of unit\n",
- part);
- errors++;
- }
- }
- for (; i < MAXPARTITIONS; i++) {
- part = 'a' + i;
- pp = &lp->d_partitions[i];
- if (pp->p_size || pp->p_offset)
- Warning("unused partition %c: size %d offset %d\n",
- 'a' + i, pp->p_size, pp->p_offset);
- }
- return (errors);
- }
-
- /*VARARGS1*/
- Warning(fmt, a1, a2, a3, a4, a5)
- char *fmt;
- {
-
- fprintf(stderr, "Warning, ");
- fprintf(stderr, fmt, a1, a2, a3, a4, a5);
- fprintf(stderr, "\n");
- }
-
- Perror(str)
- char *str;
- {
- fputs("disklabel: ", stderr); perror(str);
- exit(4);
- }
-
- usage()
- {
- #ifdef BOOT
- fprintf(stderr, "%-62s%s\n%-62s%s\n%-62s%s\n%-62s%s\n%-62s%s\n",
- "usage: disklabel [-r] disk", "(to read label)",
- "or disklabel -w [-r] disk type [ packid ] [ xxboot bootxx ]", "(to write label)",
- "or disklabel -e [-r] disk", "(to edit label)",
- "or disklabel -R [-r] disk protofile [ type | xxboot bootxx ]", "(to restore label)",
- "or disklabel [-NW] disk", "(to write disable/enable label)");
- #else
- fprintf(stderr, "%-43s%s\n%-43s%s\n%-43s%s\n%-43s%s\n%-43s%s\n",
- "usage: disklabel [-r] disk", "(to read label)",
- "or disklabel -w [-r] disk type [ packid ]", "(to write label)",
- "or disklabel -e [-r] disk", "(to edit label)",
- "or disklabel -R [-r] disk protofile", "(to restore label)",
- "or disklabel [-NW] disk", "(to write disable/enable label)");
- #endif
- exit(1);
- }
-