4.4BSD/usr/src/sbin/newlfs/newfs.c
/*-
* Copyright (c) 1989, 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* 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
static char copyright[] =
"@(#) Copyright (c) 1989, 1992, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)newfs.c 8.1 (Berkeley) 6/5/93";
#endif /* not lint */
/*
* newfs: friendly front end to mkfs
*/
#include <sys/param.h>
#include <sys/ucred.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/disklabel.h>
#include <sys/file.h>
#include <sys/mount.h>
#include <ufs/ufs/dir.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ffs/fs.h>
#include <errno.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <paths.h>
#include "config.h"
#include "extern.h"
#define COMPAT /* allow non-labeled disks */
int mfs; /* run as the memory based filesystem */
int Nflag; /* run without writing file system */
int fssize; /* file system size */
int ntracks; /* # tracks/cylinder */
int nsectors; /* # sectors/track */
int nphyssectors; /* # sectors/track including spares */
int secpercyl; /* sectors per cylinder */
int trackspares = -1; /* spare sectors per track */
int cylspares = -1; /* spare sectors per cylinder */
int sectorsize; /* bytes/sector */
#ifdef tahoe
int realsectorsize; /* bytes/sector in hardware */
#endif
int rpm; /* revolutions/minute of drive */
int interleave; /* hardware sector interleave */
int trackskew = -1; /* sector 0 skew, per track */
int headswitch; /* head switch time, usec */
int trackseek; /* track-to-track seek, usec */
int fsize = 0; /* fragment size */
int bsize = 0; /* block size */
int cpg = DESCPG; /* cylinders/cylinder group */
int cpgflg; /* cylinders/cylinder group flag was given */
int minfree = MINFREE; /* free space threshold */
int opt = DEFAULTOPT; /* optimization preference (space or time) */
int density; /* number of bytes per inode */
int maxcontig = MAXCONTIG; /* max contiguous blocks to allocate */
int rotdelay = ROTDELAY; /* rotational delay between blocks */
int maxbpg; /* maximum blocks per file in a cyl group */
int nrpos = NRPOS; /* # of distinguished rotational positions */
int bbsize = BBSIZE; /* boot block size */
int sbsize = SBSIZE; /* superblock size */
int mntflags; /* flags to be passed to mount */
u_long memleft; /* virtual memory available */
caddr_t membase; /* start address of memory based filesystem */
#ifdef COMPAT
char *disktype;
int unlabeled;
#endif
char device[MAXPATHLEN];
char *progname, *special;
static struct disklabel *getdisklabel __P((char *, int));
static struct disklabel *debug_readlabel __P((int));
static void rewritelabel __P((char *, int, struct disklabel *));
static void usage __P((void));
int
main(argc, argv)
int argc;
char *argv[];
{
register int ch;
register struct partition *pp;
register struct disklabel *lp;
struct partition oldpartition;
struct stat st;
int debug, lfs, fsi, fso, segsize;
char *cp, *opstring;
if (progname = rindex(*argv, '/'))
++progname;
else
progname = *argv;
if (strstr(progname, "mfs")) {
mfs = 1;
Nflag++;
}
/* -F is mfs only and MUST come first! */
opstring = "F:B:DLNS:T:a:b:c:d:e:f:i:k:l:m:n:o:p:r:s:t:u:x:";
if (!mfs)
opstring += 2;
debug = lfs = segsize = 0;
while ((ch = getopt(argc, argv, opstring)) != EOF)
switch(ch) {
case 'B': /* LFS segment size */
if ((segsize = atoi(optarg)) < LFS_MINSEGSIZE)
fatal("%s: bad segment size", optarg);
break;
case 'D':
debug = 1;
break;
case 'F':
if ((mntflags = atoi(optarg)) == 0)
fatal("%s: bad mount flags", optarg);
break;
case 'L': /* Create lfs */
lfs = 1;
break;
case 'N':
Nflag++;
break;
case 'S':
if ((sectorsize = atoi(optarg)) <= 0)
fatal("%s: bad sector size", optarg);
break;
#ifdef COMPAT
case 'T':
disktype = optarg;
break;
#endif
case 'a':
if ((maxcontig = atoi(optarg)) <= 0)
fatal("%s: bad max contiguous blocks\n",
optarg);
break;
case 'b': /* used for LFS */
if ((bsize = atoi(optarg)) < LFS_MINBLOCKSIZE)
fatal("%s: bad block size", optarg);
break;
case 'c':
if ((cpg = atoi(optarg)) <= 0)
fatal("%s: bad cylinders/group", optarg);
cpgflg++;
break;
case 'd':
if ((rotdelay = atoi(optarg)) < 0)
fatal("%s: bad rotational delay\n", optarg);
break;
case 'e':
if ((maxbpg = atoi(optarg)) <= 0)
fatal("%s: bad blocks per file in a cyl group\n",
optarg);
break;
case 'f':
if ((fsize = atoi(optarg)) <= 0)
fatal("%s: bad frag size", optarg);
break;
case 'i':
if ((density = atoi(optarg)) <= 0)
fatal("%s: bad bytes per inode\n", optarg);
break;
case 'k':
if ((trackskew = atoi(optarg)) < 0)
fatal("%s: bad track skew", optarg);
break;
case 'l':
if ((interleave = atoi(optarg)) <= 0)
fatal("%s: bad interleave", optarg);
break;
case 'm': /* used for LFS */
if ((minfree = atoi(optarg)) < 0 || minfree > 99)
fatal("%s: bad free space %%\n", optarg);
break;
case 'n':
if ((nrpos = atoi(optarg)) <= 0)
fatal("%s: bad rotational layout count\n",
optarg);
break;
case 'o':
if (strcmp(optarg, "space") == 0)
opt = FS_OPTSPACE;
else if (strcmp(optarg, "time") == 0)
opt = FS_OPTTIME;
else
fatal("%s: bad optimization preference %s",
optarg, "(options are `space' or `time')");
break;
case 'p':
if ((trackspares = atoi(optarg)) < 0)
fatal("%s: bad spare sectors per track",
optarg);
break;
case 'r':
if ((rpm = atoi(optarg)) <= 0)
fatal("%s: bad revs/minute\n", optarg);
break;
case 's': /* used for LFS */
if ((fssize = atoi(optarg)) <= 0)
fatal("%s: bad file system size", optarg);
break;
case 't':
if ((ntracks = atoi(optarg)) <= 0)
fatal("%s: bad total tracks", optarg);
break;
case 'u':
if ((nsectors = atoi(optarg)) <= 0)
fatal("%s: bad sectors/track", optarg);
break;
case 'x':
if ((cylspares = atoi(optarg)) < 0)
fatal("%s: bad spare sectors per cylinder",
optarg);
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (argc != 2 && (mfs || argc != 1))
usage();
/*
* If the -N flag isn't specified, open the output file. If no path
* prefix, try /dev/r%s and then /dev/%s.
*/
special = argv[0];
if (index(special, '/') == NULL) {
(void)sprintf(device, "%sr%s", _PATH_DEV, special);
if (stat(device, &st) == -1)
(void)sprintf(device, "%s%s", _PATH_DEV, special);
special = device;
}
if (!Nflag) {
fso = open(special,
(debug ? O_CREAT : 0) | O_WRONLY, DEFFILEMODE);
if (fso < 0)
fatal("%s: %s", special, strerror(errno));
} else
fso = -1;
/* Open the input file. */
fsi = open(special, O_RDONLY);
if (fsi < 0)
fatal("%s: %s", special, strerror(errno));
if (fstat(fsi, &st) < 0)
fatal("%s: %s", special, strerror(errno));
if (!debug && !mfs && !S_ISCHR(st.st_mode))
(void)printf("%s: %s: not a character-special device\n",
progname, special);
cp = index(argv[0], '\0') - 1;
if (!debug && (cp == 0 || (*cp < 'a' || *cp > 'h') && !isdigit(*cp)))
fatal("%s: can't figure out file system partition", argv[0]);
#ifdef COMPAT
if (!mfs && disktype == NULL)
disktype = argv[1];
#endif
if (debug)
lp = debug_readlabel(fsi);
else
lp = getdisklabel(special, fsi);
if (isdigit(*cp))
pp = &lp->d_partitions[0];
else
pp = &lp->d_partitions[*cp - 'a'];
if (pp->p_size == 0)
fatal("%s: `%c' partition is unavailable", argv[0], *cp);
/* If we're making a LFS, we break out here */
exit(make_lfs(fso, lp, pp, minfree, bsize, segsize));
}
#ifdef COMPAT
char lmsg[] = "%s: can't read disk label; disk type must be specified";
#else
char lmsg[] = "%s: can't read disk label";
#endif
static struct disklabel *
getdisklabel(s, fd)
char *s;
int fd;
{
static struct disklabel lab;
if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) {
#ifdef COMPAT
if (disktype) {
struct disklabel *lp, *getdiskbyname();
unlabeled++;
lp = getdiskbyname(disktype);
if (lp == NULL)
fatal("%s: unknown disk type", disktype);
return (lp);
}
#endif
(void)fprintf(stderr,
"%s: ioctl (GDINFO): %s\n", progname, strerror(errno));
fatal(lmsg, s);
}
return (&lab);
}
static struct disklabel *
debug_readlabel(fd)
int fd;
{
static struct disklabel lab;
int n;
if ((n = read(fd, &lab, sizeof(struct disklabel))) < 0)
fatal("unable to read disk label: %s", strerror(errno));
else if (n < sizeof(struct disklabel))
fatal("short read of disklabel: %d of %d bytes", n,
sizeof(struct disklabel));
return(&lab);
}
static void
rewritelabel(s, fd, lp)
char *s;
int fd;
register struct disklabel *lp;
{
#ifdef COMPAT
if (unlabeled)
return;
#endif
lp->d_checksum = 0;
lp->d_checksum = dkcksum(lp);
if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) {
(void)fprintf(stderr,
"%s: ioctl (WDINFO): %s\n", progname, strerror(errno));
fatal("%s: can't rewrite disk label", s);
}
#if vax
if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) {
register i;
int cfd;
daddr_t alt;
char specname[64];
char blk[1024];
char *cp;
/*
* Make name for 'c' partition.
*/
strcpy(specname, s);
cp = specname + strlen(specname) - 1;
if (!isdigit(*cp))
*cp = 'c';
cfd = open(specname, O_WRONLY);
if (cfd < 0)
fatal("%s: %s", specname, strerror(errno));
bzero(blk, sizeof(blk));
*(struct disklabel *)(blk + LABELOFFSET) = *lp;
alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors;
for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) {
if (lseek(cfd, (off_t)(alt + i) * lp->d_secsize,
L_SET) == -1)
fatal("lseek to badsector area: %s",
strerror(errno));
if (write(cfd, blk, lp->d_secsize) < lp->d_secsize)
fprintf(stderr,
"%s: alternate label %d write: %s\n",
progname, i/2, strerror(errno));
}
close(cfd);
}
#endif
}
void
usage()
{
if (mfs) {
fprintf(stderr,
"usage: mfs [ -fsoptions ] special-device mount-point\n");
} else
fprintf(stderr,
"usage: newfs [ -fsoptions ] special-device%s\n",
#ifdef COMPAT
" [device-type]");
#else
"");
#endif
fprintf(stderr, "where fsoptions are:\n");
fprintf(stderr, "\t-B LFS segment size\n");
fprintf(stderr, "\t-D debug\n");
fprintf(stderr, "\t-F mount flags\n");
fprintf(stderr, "\t-L create LFS file system\n");
fprintf(stderr,
"\t-N do not create file system, just print out parameters\n");
fprintf(stderr, "\t-S sector size\n");
#ifdef COMPAT
fprintf(stderr, "\t-T disktype\n");
#endif
fprintf(stderr, "\t-a maximum contiguous blocks\n");
fprintf(stderr, "\t-b block size\n");
fprintf(stderr, "\t-c cylinders/group\n");
fprintf(stderr, "\t-d rotational delay between contiguous blocks\n");
fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n");
fprintf(stderr, "\t-f frag size\n");
fprintf(stderr, "\t-i number of bytes per inode\n");
fprintf(stderr, "\t-k sector 0 skew, per track\n");
fprintf(stderr, "\t-l hardware sector interleave\n");
fprintf(stderr, "\t-m minimum free space %%\n");
fprintf(stderr, "\t-n number of distinguished rotational positions\n");
fprintf(stderr, "\t-o optimization preference (`space' or `time')\n");
fprintf(stderr, "\t-p spare sectors per track\n");
fprintf(stderr, "\t-r revolutions/minute\n");
fprintf(stderr, "\t-s file system size (sectors)\n");
fprintf(stderr, "\t-t tracks/cylinder\n");
fprintf(stderr, "\t-u sectors/track\n");
fprintf(stderr, "\t-x spare sectors per cylinder\n");
exit(1);
}