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disklabel.c
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disklabel.c
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/*
* Copyright (c) 1987, 1993
* 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.
*
* @(#) Copyright (c) 1987, 1993 The Regents of the University of California. All rights reserved.
* @(#)disklabel.c 1.2 (Symmetric) 11/28/85
* @(#)disklabel.c 8.2 (Berkeley) 1/7/94
* $FreeBSD: src/sbin/disklabel/disklabel.c,v 1.28.2.15 2003/01/24 16:18:16 des Exp $
*/
#include <sys/param.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <sys/wait.h>
#define DKTYPENAMES
#include <sys/disklabel32.h>
#include <sys/disklabel64.h>
#include <sys/diskslice.h>
#include <sys/diskmbr.h>
#include <sys/dtype.h>
#include <sys/sysctl.h>
#include <disktab.h>
#include <fstab.h>
#include <vfs/ufs/dinode.h>
#include <vfs/ufs/fs.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <stdarg.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include "pathnames.h"
/*
* Disklabel32: read and write 32 bit disklabels.
* The label is usually placed on one of the first sectors of the disk.
* Many machines 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.
*/
#ifndef BBSIZE
#define BBSIZE 8192 /* size of boot area, with label */
#endif
/* FIX! These are too low, but are traditional */
#define DEFAULT_NEWFS_BLOCK 8192U
#define DEFAULT_NEWFS_FRAG 1024U
#define DEFAULT_NEWFS_CPG 16U
#define BIG_NEWFS_BLOCK 16384U
#define BIG_NEWFS_FRAG 2048U
#define BIG_NEWFS_CPG 64U
#define NUMBOOT 2
void makelabel(const char *, const char *, struct disklabel32 *);
int writelabel(int, const char *, struct disklabel32 *);
void l_perror(const char *);
struct disklabel32 *readlabel(int);
struct disklabel32 *makebootarea(char *, struct disklabel32 *, int);
void display(FILE *, const struct disklabel32 *);
int edit(struct disklabel32 *, int);
int editit(void);
char *skip(char *);
char *word(char *);
int getasciilabel(FILE *, struct disklabel32 *);
int getasciipartspec(char *, struct disklabel32 *, int, int);
int checklabel(struct disklabel32 *);
void setbootflag(struct disklabel32 *);
void Warning(const char *, ...) __printflike(1, 2);
void usage(void);
int checkoldboot(int, const char *);
const char *fixlabel(int, struct disklabel32 *, int);
struct disklabel32 *getvirginlabel(void);
struct disklabel32 *getdisklabelfromdisktab(const char *name);
#define DEFEDITOR _PATH_VI
#define streq(a,b) (strcmp(a,b) == 0)
char *dkname;
char *specname;
char tmpfil[] = PATH_TMPFILE;
char namebuf[BBSIZE];
struct disklabel32 lab;
char bootarea[BBSIZE];
#define MAX_PART ('z')
#define MAX_NUM_PARTS (1 + MAX_PART - 'a')
char part_size_type[MAX_NUM_PARTS];
char part_offset_type[MAX_NUM_PARTS];
int part_set[MAX_NUM_PARTS];
#if NUMBOOT > 0
int installboot; /* non-zero if we should install a boot program */
char *bootbuf; /* pointer to buffer with remainder of boot prog */
int bootsize; /* size of remaining boot program */
char *xxboot; /* primary boot */
char *bootxx; /* secondary boot */
char boot0[MAXPATHLEN];
char boot1[MAXPATHLEN];
#endif
enum {
UNSPEC, EDIT, NOWRITE, READ, RESTORE, WRITE, WRITEABLE, WRITEBOOT
} op = UNSPEC;
int rflag;
int disable_write; /* set to disable writing to disk label */
int forceflag;
u_int32_t slice_start_lba;
#ifdef DEBUG
int debug;
#define OPTIONS "BNRWb:def:nrs:w"
#else
#define OPTIONS "BNRWb:ef:nrs:w"
#endif
int
main(int argc, char *argv[])
{
struct disklabel32 *lp;
FILE *t;
int ch, f = 0, flag, error = 0;
char *name = 0;
while ((ch = getopt(argc, argv, OPTIONS)) != -1)
switch (ch) {
#if NUMBOOT > 0
case 'B':
++installboot;
break;
case 'b':
xxboot = optarg;
break;
case 'f':
forceflag = 1;
slice_start_lba = strtoul(optarg, NULL, 0);
break;
#if NUMBOOT > 1
case 's':
bootxx = optarg;
break;
#endif
#endif
case 'N':
if (op != UNSPEC)
usage();
op = NOWRITE;
break;
case 'n':
disable_write = 1;
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 NUMBOOT > 0
if (installboot) {
rflag++;
if (op == UNSPEC)
op = WRITEBOOT;
} else {
if (op == UNSPEC)
op = READ;
xxboot = bootxx = 0;
}
#else
if (op == UNSPEC)
op = READ;
#endif
if (argc < 1)
usage();
dkname = getdevpath(argv[0], 0);
specname = dkname;
f = open(specname, op == READ ? O_RDONLY : O_RDWR);
if (f < 0)
err(4, "%s", specname);
switch(op) {
case UNSPEC:
break;
case EDIT:
if (argc != 1)
usage();
lp = readlabel(f);
error = edit(lp, f);
break;
case NOWRITE:
flag = 0;
if (ioctl(f, DIOCWLABEL, (char *)&flag) < 0)
err(4, "ioctl DIOCWLABEL");
break;
case READ:
if (argc != 1)
usage();
lp = readlabel(f);
display(stdout, lp);
error = checklabel(lp);
if (checkoldboot(f, NULL))
warnx("Warning, old bootblocks detected, install new bootblocks & reinstall the disklabel");
break;
case RESTORE:
#if NUMBOOT > 0
if (installboot && argc == 3) {
makelabel(argv[2], 0, &lab);
argc--;
/*
* We only called makelabel() for its side effect
* of setting the bootstrap file names. Discard
* all changes to `lab' so that all values in the
* final label come from the ASCII label.
*/
bzero((char *)&lab, sizeof(lab));
}
#endif
if (argc != 2)
usage();
if (!(t = fopen(argv[1], "r")))
err(4, "%s", argv[1]);
if (!getasciilabel(t, &lab))
exit(1);
lp = makebootarea(bootarea, &lab, f);
*lp = lab;
error = writelabel(f, bootarea, lp);
break;
case WRITE:
if (argc == 3) {
name = argv[2];
argc--;
}
if (argc != 2)
usage();
makelabel(argv[1], name, &lab);
lp = makebootarea(bootarea, &lab, f);
*lp = lab;
if (checklabel(lp) == 0)
error = writelabel(f, bootarea, lp);
break;
case WRITEABLE:
flag = 1;
if (ioctl(f, DIOCWLABEL, (char *)&flag) < 0)
err(4, "ioctl DIOCWLABEL");
break;
#if NUMBOOT > 0
case WRITEBOOT:
{
struct disklabel32 tlab;
lp = readlabel(f);
tlab = *lp;
if (argc == 2)
makelabel(argv[1], 0, &lab);
lp = makebootarea(bootarea, &lab, f);
*lp = tlab;
if (checklabel(lp) == 0)
error = writelabel(f, bootarea, lp);
break;
}
#endif
}
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.
*/
void
makelabel(const char *type, const char *name, struct disklabel32 *lp)
{
struct disklabel32 *dp;
if (strcmp(type, "auto") == 0)
dp = getvirginlabel();
else
dp = getdisklabelfromdisktab(type);
if (dp == NULL)
errx(1, "%s: unknown disk type", type);
*lp = *dp;
/*
* NOTE: boot control files may no longer be specified in disktab.
*/
if (name)
strncpy(lp->d_packname, name, sizeof(lp->d_packname));
}
int
writelabel(int f, const char *boot, struct disklabel32 *lp)
{
const char *msg;
int flag;
int r;
if (disable_write) {
Warning("write to disk label suppressed - label was as follows:");
display(stdout, lp);
return (0);
} else {
/* make sure we are not overwriting our boot code */
if (checkoldboot(f, boot))
errx(4, "Will not overwrite old bootblocks w/ label, install new boot blocks first!");
setbootflag(lp);
lp->d_magic = DISKMAGIC32;
lp->d_magic2 = DISKMAGIC32;
lp->d_checksum = 0;
lp->d_checksum = dkcksum32(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, DIOCSDINFO32, lp) < 0 &&
errno != ENODEV && errno != ENOTTY) {
l_perror("ioctl DIOCSDINFO32");
return (1);
}
lseek(f, (off_t)0, SEEK_SET);
/*
* write enable label sector before write
* (if necessary), disable after writing.
*/
flag = 1;
if (ioctl(f, DIOCWLABEL, &flag) < 0)
warn("ioctl DIOCWLABEL");
msg = fixlabel(f, lp, 1);
if (msg) {
warn(msg);
return (1);
}
r = write(f, boot, lp->d_bbsize);
fixlabel(f, lp, 0);
if (r != ((ssize_t)lp->d_bbsize)) {
warn("write");
return (1);
}
#if NUMBOOT > 0
/*
* Output the remainder of the disklabel
*/
if (bootbuf) {
fixlabel(f, lp, 1);
r = write(f, bootbuf, bootsize);
fixlabel(f, lp, 0);
if (r != bootsize) {
warn("write");
return(1);
}
}
#endif
flag = 0;
ioctl(f, DIOCWLABEL, &flag);
} else if (ioctl(f, DIOCWDINFO32, lp) < 0) {
l_perror("ioctl DIOCWDINFO32");
return (1);
}
}
return (0);
}
void
l_perror(const char *s)
{
switch (errno) {
case ESRCH:
warnx("%s: no disk label on disk;", s);
fprintf(stderr, "add \"-r\" to install initial label\n");
break;
case EINVAL:
warnx("%s: label magic number or checksum is wrong!", s);
fprintf(stderr, "(disklabel or kernel is out of date?)\n");
break;
case EBUSY:
warnx("%s: open partition would move or shrink", s);
break;
case EXDEV:
warnx("%s: '%c' partition must start at beginning of disk",
s, 'a' + RAW_PART);
break;
case ENOATTR:
warnx("%s: the disk already has a label of a different type,\n"
"probably a 64 bit disklabel. It must be cleaned out "
"first.\n", s);
break;
default:
warn(NULL);
break;
}
}
/*
* Fetch disklabel for disk.
* Use ioctl to get label unless -r flag is given.
*/
struct disklabel32 *
readlabel(int f)
{
const char *msg;
struct disklabel32 *lp;
int r;
if (rflag) {
r = read(f, bootarea, BBSIZE);
if (r < BBSIZE)
err(4, "%s", specname);
for (lp = (struct disklabel32 *)bootarea;
lp <= (struct disklabel32 *)(bootarea + BBSIZE - sizeof(*lp));
lp = (struct disklabel32 *)((char *)lp + 16)) {
if (lp->d_magic == DISKMAGIC32 &&
lp->d_magic2 == DISKMAGIC32)
break;
}
if (lp > (struct disklabel32 *)(bootarea+BBSIZE-sizeof(*lp)) ||
lp->d_magic != DISKMAGIC32 || lp->d_magic2 != DISKMAGIC32 ||
dkcksum32(lp) != 0) {
errx(1, "bad pack magic number (label is damaged, "
"or pack is unlabeled)");
}
if ((msg = fixlabel(f, lp, 0)) != NULL)
errx(1, msg);
} else {
lp = &lab;
if (ioctl(f, DIOCGDINFO32, lp) < 0) {
l_perror("ioctl DIOCGDINFO32");
exit(4);
}
}
return (lp);
}
/*
* Construct a bootarea (d_bbsize bytes) in the specified buffer ``boot''
* Returns a pointer to the disklabel portion of the bootarea.
*/
struct disklabel32 *
makebootarea(char *boot, struct disklabel32 *dp, int f)
{
struct disklabel32 *lp;
char *p;
int b;
#if NUMBOOT > 0
struct stat sb;
#endif
#ifdef __i386__
char *tmpbuf;
unsigned int i, found;
#endif
/* XXX */
if (dp->d_secsize == 0) {
dp->d_secsize = DEV_BSIZE;
dp->d_bbsize = BBSIZE;
}
lp = (struct disklabel32 *)
(boot + (LABELSECTOR32 * dp->d_secsize) + LABELOFFSET32);
bzero((char *)lp, sizeof *lp);
#if NUMBOOT > 0
/*
* If we are not installing a boot program but we are installing a
* label on disk then we must read the current bootarea so we don't
* clobber the existing boot.
*/
if (!installboot) {
if (rflag) {
if (read(f, boot, BBSIZE) < BBSIZE)
err(4, "%s", specname);
bzero((char *)lp, sizeof *lp);
}
return (lp);
}
/*
* We are installing a boot program. Determine the name(s) and
* read them into the appropriate places in the boot area.
*/
if (!xxboot || !bootxx) {
if (!xxboot) {
sprintf(boot0, "%s/boot1", _PATH_BOOTDIR);
xxboot = boot0;
}
#if NUMBOOT > 1
if (!bootxx) {
sprintf(boot1, "%s/boot2", _PATH_BOOTDIR);
bootxx = boot1;
}
#endif
}
#ifdef DEBUG
if (debug)
fprintf(stderr, "bootstraps: xxboot = %s, bootxx = %s\n",
xxboot, bootxx ? bootxx : "NONE");
#endif
/*
* Strange rules:
* 1. One-piece bootstrap (hp300/hp800)
* up to d_bbsize bytes of ``xxboot'' go in bootarea, the rest
* is remembered and written later following the bootarea.
* 2. Two-piece bootstraps (vax/i386?/mips?)
* up to d_secsize bytes of ``xxboot'' go in first d_secsize
* bytes of bootarea, remaining d_bbsize-d_secsize filled
* from ``bootxx''.
*/
b = open(xxboot, O_RDONLY);
if (b < 0)
err(4, "%s", xxboot);
#if NUMBOOT > 1
#ifdef __i386__
/*
* XXX Botch alert.
* The i386 has the so-called fdisk table embedded into the
* primary bootstrap. We take care to not clobber it, but
* only if it does already contain some data. (Otherwise,
* the xxboot provides a template.)
*/
if ((tmpbuf = (char *)malloc((int)dp->d_secsize)) == 0)
err(4, "%s", xxboot);
memcpy((void *)tmpbuf, (void *)boot, (int)dp->d_secsize);
#endif /* i386 */
if (read(b, boot, (int)dp->d_secsize) < 0)
err(4, "%s", xxboot);
close(b);
#ifdef __i386__
for (i = DOSPARTOFF, found = 0;
!found && i < DOSPARTOFF + NDOSPART*sizeof(struct dos_partition);
i++)
found = tmpbuf[i] != 0;
if (found)
memcpy((void *)&boot[DOSPARTOFF],
(void *)&tmpbuf[DOSPARTOFF],
NDOSPART * sizeof(struct dos_partition));
free(tmpbuf);
#endif /* i386 */
b = open(bootxx, O_RDONLY);
if (b < 0)
err(4, "%s", bootxx);
if (fstat(b, &sb) != 0)
err(4, "%s", bootxx);
if (dp->d_secsize + sb.st_size > dp->d_bbsize)
errx(4, "%s too large", bootxx);
if (read(b, &boot[dp->d_secsize],
(int)(dp->d_bbsize-dp->d_secsize)) < 0)
err(4, "%s", bootxx);
#else /* !(NUMBOOT > 1) */
if (read(b, boot, (int)dp->d_bbsize) < 0)
err(4, "%s", xxboot);
if (fstat(b, &sb) != 0)
err(4, "%s", xxboot);
bootsize = (int)sb.st_size - dp->d_bbsize;
if (bootsize > 0) {
/* XXX assume d_secsize is a power of two */
bootsize = (bootsize + dp->d_secsize-1) & ~(dp->d_secsize-1);
bootbuf = (char *)malloc((size_t)bootsize);
if (bootbuf == 0)
err(4, "%s", xxboot);
if (read(b, bootbuf, bootsize) < 0) {
free(bootbuf);
err(4, "%s", xxboot);
}
}
#endif /* NUMBOOT > 1 */
close(b);
#endif /* NUMBOOT > 0 */
/*
* Make sure no part of the bootstrap is written in the area
* reserved for the label.
*/
for (p = (char *)lp; p < (char *)lp + sizeof(struct disklabel32); p++)
if (*p)
errx(2, "bootstrap doesn't leave room for disk label");
return (lp);
}
void
display(FILE *f, const struct disklabel32 *lp)
{
int i, j;
const struct partition32 *pp;
fprintf(f, "# %s:\n", specname);
if (lp->d_type < DKMAXTYPES)
fprintf(f, "type: %s\n", dktypenames[lp->d_type]);
else
fprintf(f, "type: %u\n", lp->d_type);
fprintf(f, "disk: %.*s\n", (int)sizeof(lp->d_typename),
lp->d_typename);
fprintf(f, "label: %.*s\n", (int)sizeof(lp->d_packname),
lp->d_packname);
fprintf(f, "flags:");
fprintf(f, "\n");
fprintf(f, "bytes/sector: %lu\n", (u_long)lp->d_secsize);
fprintf(f, "sectors/track: %lu\n", (u_long)lp->d_nsectors);
fprintf(f, "tracks/cylinder: %lu\n", (u_long)lp->d_ntracks);
fprintf(f, "sectors/cylinder: %lu\n", (u_long)lp->d_secpercyl);
fprintf(f, "cylinders: %lu\n", (u_long)lp->d_ncylinders);
fprintf(f, "sectors/unit: %lu\n", (u_long)lp->d_secperunit);
fprintf(f, "rpm: %u\n", lp->d_rpm);
fprintf(f, "interleave: %u\n", lp->d_interleave);
fprintf(f, "trackskew: %u\n", lp->d_trackskew);
fprintf(f, "cylinderskew: %u\n", lp->d_cylskew);
fprintf(f, "headswitch: %lu\t\t# milliseconds\n",
(u_long)lp->d_headswitch);
fprintf(f, "track-to-track seek: %ld\t# milliseconds\n",
(u_long)lp->d_trkseek);
fprintf(f, "drivedata: ");
for (i = NDDATA32 - 1; i >= 0; i--) {
if (lp->d_drivedata[i])
break;
}
if (i < 0)
i = 0;
for (j = 0; j <= i; j++)
fprintf(f, "%lu ", (u_long)lp->d_drivedata[j]);
fprintf(f, "\n\n%u partitions:\n", lp->d_npartitions);
fprintf(f,
"# size offset fstype\n");
pp = lp->d_partitions;
for (i = 0; i < lp->d_npartitions; i++, pp++) {
if (pp->p_size) {
u_long onemeg = 1024 * 1024 / lp->d_secsize;
fprintf(f, " %c: ", 'a' + i);
fprintf(f, "%10lu ", (u_long)pp->p_size);
fprintf(f, "%10lu ", (u_long)pp->p_offset);
if (pp->p_fstype < FSMAXTYPES)
fprintf(f, "%8.8s", fstypenames[pp->p_fstype]);
else
fprintf(f, "%8d", pp->p_fstype);
fprintf(f, "\t# %11.3fMB", (double)pp->p_size / onemeg);
fprintf(f, "\n");
}
}
fflush(f);
}
int
edit(struct disklabel32 *lp, int f)
{
int c, fd;
struct disklabel32 label;
FILE *fp;
if ((fd = mkstemp(tmpfil)) == -1 ||
(fp = fdopen(fd, "w")) == NULL) {
warnx("can't create %s", tmpfil);
return (1);
}
display(fp, lp);
fclose(fp);
for (;;) {
if (!editit())
break;
fp = fopen(tmpfil, "r");
if (fp == NULL) {
warnx("can't reopen %s for reading", tmpfil);
break;
}
bzero((char *)&label, sizeof(label));
if (getasciilabel(fp, &label)) {
*lp = label;
if (writelabel(f, bootarea, lp) == 0) {
fclose(fp);
unlink(tmpfil);
return (0);
}
}
fclose(fp);
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;
}
unlink(tmpfil);
return (1);
}
int
editit(void)
{
int pid, xpid;
int status, omask;
const char *ed;
omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP));
while ((pid = fork()) < 0) {
if (errno == EPROCLIM) {
warnx("you have too many processes");
return(0);
}
if (errno != EAGAIN) {
warn("fork");
return(0);
}
sleep(1);
}
if (pid == 0) {
sigsetmask(omask);
setgid(getgid());
setuid(getuid());
if ((ed = getenv("EDITOR")) == NULL)
ed = DEFEDITOR;
execlp(ed, ed, tmpfil, NULL);
err(1, "%s", ed);
}
while ((xpid = wait(&status)) >= 0)
if (xpid == pid)
break;
sigsetmask(omask);
return(!status);
}
char *
skip(char *cp)
{
while (*cp != '\0' && isspace(*cp))
cp++;
if (*cp == '\0' || *cp == '#')
return (NULL);
return (cp);
}
char *
word(char *cp)
{
char c;
while (*cp != '\0' && !isspace(*cp) && *cp != '#')
cp++;
if ((c = *cp) != '\0') {
*cp++ = '\0';
if (c != '#')
return (skip(cp));
}
return (NULL);
}
/*
* Read an ascii label in from fd f,
* in the same format as that put out by display(),
* and fill in lp.
*/
int
getasciilabel(FILE *f, struct disklabel32 *lp)
{
char *cp;
const char **cpp;
u_int part;
char *tp, line[BUFSIZ];
u_long v;
int lineno = 0, errors = 0;
int i;
char empty[] = "";
char unknown[] = "unknown";
bzero(&part_set, sizeof(part_set));
bzero(&part_size_type, sizeof(part_size_type));
bzero(&part_offset_type, sizeof(part_offset_type));
lp->d_bbsize = BBSIZE; /* XXX */
lp->d_sbsize = SBSIZE; /* XXX */
while (fgets(line, sizeof(line) - 1, f)) {
lineno++;
if ((cp = strchr(line,'\n')) != 0)
*cp = '\0';
cp = skip(line);
if (cp == NULL)
continue;
tp = strchr(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 (*cpp && strcasecmp(*cpp, tp) == 0) {
lp->d_type = cpp - dktypenames;
break;
}
}
if (cpp < &dktypenames[DKMAXTYPES])
continue;
v = strtoul(tp, NULL, 10);
if (v >= DKMAXTYPES) {
fprintf(stderr, "line %d:%s %lu\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 |= 0; /* obsolete */
else if (streq(cp, "ecc"))
v |= 0; /* obsolete */
else if (streq(cp, "badsect"))
v |= 0; /* obsolete */
else {
fprintf(stderr,
"line %d: %s: bad flag\n",
lineno, cp);
errors++;
}
}
lp->d_flags = v;
continue;
}
if (streq(cp, "drivedata")) {
for (i = 0; (cp = tp) && *cp != '\0' && i < NDDATA32;) {
lp->d_drivedata[i++] = strtoul(cp, NULL, 10);
tp = word(cp);
}
continue;
}
if (sscanf(cp, "%lu partitions", &v) == 1) {
if (v == 0 || v > MAXPARTITIONS32) {
fprintf(stderr,
"line %d: bad # of partitions\n", lineno);
lp->d_npartitions = MAXPARTITIONS32;
errors++;
} else
lp->d_npartitions = v;
continue;
}
if (tp == NULL)
tp = empty;
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 = strtoul(tp, NULL, 10);
if (v == 0 || (v % DEV_BSIZE) != 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 = strtoul(tp, NULL, 10);
#if (ULONG_MAX != 0xffffffffUL)
if (v == 0 || v > 0xffffffff) {
#else
if (v == 0) {
#endif
fprintf(stderr, "line %d: %s: bad %s\n",
lineno, tp, cp);
errors++;
} else
lp->d_nsectors = v;
continue;
}
if (streq(cp, "sectors/cylinder")) {
v = strtoul(tp, NULL, 10);
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 = strtoul(tp, NULL, 10);
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 = strtoul(tp, NULL, 10);
if (v == 0) {
fprintf(stderr, "line %d: %s: bad %s\n",
lineno, tp, cp);
errors++;
} else
lp->d_ncylinders = v;
continue;
}
if (streq(cp, "sectors/unit")) {
v = strtoul(tp, NULL, 10);
if (v == 0) {
fprintf(stderr, "line %d: %s: bad %s\n",
lineno, tp, cp);
errors++;
} else
lp->d_secperunit = v;
continue;