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NetBSD/sbin/newfs_lfs/newfs.c

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/* $NetBSD: newfs.c,v 1.20 2006/05/04 04:39:15 perseant Exp $ */
/*-
* 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. 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.
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1989, 1992, 1993\n\
The Regents of the University of California. All rights reserved.\n");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)newfs.c 8.5 (Berkeley) 5/24/95";
#else
__RCSID("$NetBSD: newfs.c,v 1.20 2006/05/04 04:39:15 perseant Exp $");
#endif
#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 <sys/sysctl.h>
#include <sys/time.h>
#include <ufs/ufs/dir.h>
#include <ufs/ufs/dinode.h>
#include <ufs/lfs/lfs.h>
#include <disktab.h>
#include <err.h>
#include <errno.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <paths.h>
#include <util.h>
#include "config.h"
#include "extern.h"
#include "bufcache.h"
#define COMPAT /* allow non-labeled disks */
int Nflag = 0; /* run without writing file system */
int fssize; /* file system size */
int sectorsize; /* bytes/sector */
int fsize = 0; /* fragment size */
int bsize = 0; /* block size */
int ibsize = 0; /* inode block size */
int interleave = 0; /* segment interleave */
int minfree = MINFREE; /* free space threshold */
int minfreeseg = 0; /* segments not counted in bfree total */
int resvseg = 0; /* free segments reserved for the cleaner */
u_int32_t roll_id = 0; /* roll-forward id */
u_long memleft; /* virtual memory available */
caddr_t membase; /* start address of memory based filesystem */
#ifdef COMPAT
char *disktype;
int unlabeled;
#endif
int preen = 0; /* Coexistence with fsck_lfs */
char device[MAXPATHLEN];
char *progname, *special;
static struct disklabel *getdisklabel(char *, int);
static struct disklabel *debug_readlabel(int);
#ifdef notdef
static void rewritelabel(char *, int, struct disklabel *);
#endif
static int64_t strsuftoi64(const char *, const char *, int64_t, int64_t, int *);
static void usage(void);
/* CHUNKSIZE should be larger than MAXPHYS */
#define CHUNKSIZE (1024 * 1024)
static size_t
auto_segsize(int fd, off_t len, int version)
{
off_t off, bw;
time_t start, finish;
char buf[CHUNKSIZE];
long seeks;
size_t final;
int i;
/* First, get sequential access bandwidth */
time(&start);
finish = start;
for (off = 0; finish - start < 10; off += CHUNKSIZE) {
if (pread(fd, buf, CHUNKSIZE, off) < 0)
break;
time(&finish);
}
/* Bandwidth = bytes / sec */
/* printf("%ld bytes in %ld seconds\n", (long)off, (long)(finish - start)); */
bw = off / (finish - start);
/* Second, seek time */
time(&start);
finish = start; /* structure copy */
for (seeks = 0; finish - start < 10; ) {
off = (((double)rand()) * (btodb(len))) / ((off_t)RAND_MAX + 1);
if (pread(fd, buf, dbtob(1), dbtob(off)) < 0)
err(1, "pread");
time(&finish);
++seeks;
}
/* printf("%ld seeks in %ld seconds\n", (long)seeks, (long)(finish - start)); */
/* Seek time in units/sec */
seeks /= (finish - start);
if (seeks == 0)
seeks = 1;
printf("bw = %ld B/s, seek time %ld ms (%ld seeks/s)\n",
(long)bw, 1000/seeks, seeks);
final = dbtob(btodb(4 * bw / seeks));
if (version == 1) {
for (i = 0; final; final >>= 1, i++)
;
final = 1 << i;
}
printf("using initial segment size %ld\n", (long)final);
return final;
}
int
main(int argc, char **argv)
{
int version, ch;
struct partition *pp;
struct disklabel *lp;
struct stat st;
int debug, force, fsi, fso, segsize, maxpartitions;
uint secsize = 0;
daddr_t start;
char *cp;
const char *opstring;
int byte_sized = 0;
int r;
version = DFL_VERSION; /* what version of lfs to make */
if ((progname = strrchr(*argv, '/')) != NULL)
++progname;
else
progname = *argv;
maxpartitions = getmaxpartitions();
if (maxpartitions > 26)
fatal("insane maxpartitions value %d", maxpartitions);
opstring = "AB:b:DFf:I:i:LM:m:NO:R:r:S:s:v:";
debug = force = segsize = start = 0;
while ((ch = getopt(argc, argv, opstring)) != -1)
switch(ch) {
case 'A': /* Adaptively configure segment size */
segsize = -1;
break;
case 'B': /* LFS segment size */
segsize = strsuftoi64("segment size", optarg, LFS_MINSEGSIZE, INT64_MAX, NULL);
break;
case 'D':
debug = 1;
break;
case 'F':
force = 1;
break;
case 'I':
interleave = strsuftoi64("interleave", optarg, 0, INT64_MAX, NULL);
break;
case 'L': /* Compatibility only */
break;
case 'M':
minfreeseg = strsuftoi64("minfreeseg", optarg, 0, INT64_MAX, NULL);
break;
case 'N':
Nflag++;
break;
case 'O':
start = strsuftoi64("start", optarg, 0, INT64_MAX, NULL);
break;
case 'R':
resvseg = strsuftoi64("resvseg", optarg, 0, INT64_MAX, NULL);
break;
case 'S':
secsize = strsuftoi64("sector size", optarg, 1, INT64_MAX, NULL);
if (secsize <= 0 || (secsize & (secsize - 1)))
fatal("%s: bad sector size", optarg);
break;
#ifdef COMPAT
case 'T':
disktype = optarg;
break;
#endif
case 'b':
bsize = strsuftoi64("block size", optarg, LFS_MINBLOCKSIZE, INT64_MAX, NULL);
break;
case 'f':
fsize = strsuftoi64("fragment size", optarg, LFS_MINBLOCKSIZE, INT64_MAX, NULL);
break;
case 'i':
ibsize = strsuftoi64("inode block size", optarg, LFS_MINBLOCKSIZE, INT64_MAX, NULL);
break;
case 'm':
minfree = strsuftoi64("free space %", optarg, 0, 99, NULL);
break;
case 'r':
roll_id = strsuftoi64("roll-forward id", optarg, 1, UINT_MAX, NULL);
break;
case 's':
fssize = strsuftoi64("file system size", optarg, 0, INT64_MAX, &byte_sized);
break;
case 'v':
version = strsuftoi64("file system version", optarg, 1, LFS_VERSION, NULL);
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (argc != 2 && 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 (strchr(special, '/') == NULL) {
(void)snprintf(device, sizeof(device), "%sr%s", _PATH_DEV,
special);
if (stat(device, &st) == -1)
(void)snprintf(device, sizeof(device), "%s%s",
_PATH_DEV, special);
special = device;
}
if (!Nflag) {
fso = open(special,
(debug ? O_CREAT : 0) | O_RDWR, 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 (!S_ISCHR(st.st_mode)) {
if (debug) {
lp = debug_readlabel(fsi);
pp = &lp->d_partitions[0];
} else {
static struct partition dummy_pp;
lp = NULL;
pp = &dummy_pp;
pp->p_fstype = FS_BSDLFS;
if (secsize == 0)
secsize = 512;
pp->p_size = st.st_size / secsize;
}
} else {
cp = strchr(argv[0], '\0') - 1;
if (!debug
&& ((*cp < 'a' || *cp > ('a' + maxpartitions - 1))
&& !isdigit((unsigned char)*cp)))
fatal("%s: can't figure out file system partition", argv[0]);
#ifdef COMPAT
if (disktype == NULL)
disktype = argv[1];
#endif
lp = getdisklabel(special, fsi);
if (isdigit((unsigned char)*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 (secsize == 0)
secsize = lp->d_secsize;
/* From here on out fssize is in sectors */
if (byte_sized) {
fssize /= secsize;
}
/* If force, make the partition look like an LFS */
if (force) {
pp->p_fstype = FS_BSDLFS;
if (fssize) {
pp->p_size = fssize;
}
/* 0 means to use defaults */
pp->p_fsize = 0;
pp->p_frag = 0;
pp->p_sgs = 0;
} else
if (fssize != 0 && fssize < pp->p_size)
pp->p_size = fssize;
/* Try autoconfiguring segment size, if asked to */
if (segsize == -1) {
if (!S_ISCHR(st.st_mode)) {
warnx("%s is not a character special device, ignoring -A", special);
segsize = 0;
} else
segsize = auto_segsize(fsi, dbtob(pp->p_size), version);
}
/* If we're making a LFS, we break out here */
r = make_lfs(fso, secsize, pp, minfree, bsize, fsize, segsize,
minfreeseg, resvseg, version, start, ibsize, interleave,
roll_id);
if (debug)
bufstats();
exit(r);
}
#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(char *s, int fd)
{
static struct disklabel lab;
if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) {
#ifdef COMPAT
if (disktype) {
struct disklabel *lp;
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(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 %ld bytes", n,
(u_long) sizeof(struct disklabel));
return(&lab);
}
#ifdef notdef
static void
rewritelabel(char *s, int fd, 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) {
int i;
int cfd;
daddr_t alt;
off_t loff;
char specname[64];
char blk[1024];
char *cp;
/*
* Make name for 'c' partition.
*/
strlcpy(specname, s, sizeof(specname));
cp = specname + strlen(specname) - 1;
if (!isdigit(*cp))
*cp = 'c';
cfd = open(specname, O_WRONLY);
if (cfd < 0)
fatal("%s: %s", specname, strerror(errno));
if ((loff = getlabeloffset()) < 0)
fatal("getlabeloffset: %s", strerror(errno));
memset(blk, 0, sizeof(blk));
*(struct disklabel *)(blk + loff) = *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),
SEEK_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 /* vax */
}
#endif /* notdef */
static int64_t
strsuftoi64(const char *desc, const char *arg, int64_t min, int64_t max, int *num_suffix)
{
int64_t result, r1;
int shift = 0;
char *ep;
errno = 0;
r1 = strtoll(arg, &ep, 10);
if (ep[0] != '\0' && ep[1] != '\0')
errx(1, "%s `%s' is not a valid number.", desc, arg);
switch (ep[0]) {
case '\0':
case 's': case 'S':
if (num_suffix != NULL)
*num_suffix = 0;
break;
case 'g': case 'G':
shift += 10;
/* FALLTHROUGH */
case 'm': case 'M':
shift += 10;
/* FALLTHROUGH */
case 'k': case 'K':
shift += 10;
/* FALLTHROUGH */
case 'b': case 'B':
if (num_suffix != NULL)
*num_suffix = 1;
break;
default:
errx(1, "`%s' is not a valid suffix for %s.", ep, desc);
}
result = r1 << shift;
if (errno == ERANGE || result >> shift != r1)
errx(1, "%s `%s' is too large to convert.", desc, arg);
if (result < min)
errx(1, "%s `%s' (%" PRId64 ") is less than the minimum (%" PRId64 ").",
desc, arg, result, min);
if (result > max)
errx(1, "%s `%s' (%" PRId64 ") is greater than the maximum (%" PRId64 ").",
desc, arg, result, max);
return result;
}
void
usage()
{
fprintf(stderr, "usage: newfs_lfs [ -fsoptions ] special-device\n");
fprintf(stderr, "where fsoptions are:\n");
fprintf(stderr, "\t-A (autoconfigure segment size)\n");
fprintf(stderr, "\t-B segment size in bytes\n");
fprintf(stderr, "\t-D (debug)\n");
fprintf(stderr, "\t-M count of segments not counted in bfree\n");
fprintf(stderr,
"\t-N (do not create file system, just print out parameters)\n");
fprintf(stderr, "\t-O first segment offset in sectors\n");
fprintf(stderr, "\t-R count of segments reserved for the cleaner\n");
fprintf(stderr, "\t-b block size in bytes\n");
fprintf(stderr, "\t-f frag size in bytes\n");
fprintf(stderr, "\t-m minimum free space %%\n");
fprintf(stderr, "\t-s file system size in sectors\n");
fprintf(stderr, "\t-v version\n");
exit(1);
}
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