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f87f7774e0
NetBSD/sbin/newfs/newfs.c
pooka f87f7774e0 Add -G, which turns consistency check errors in warnings. The 
current testing purpose is to create a file system with
block size > MAXPHYS.

(the check doesn't make that much sense anyway in these days of
mobile file systems, since we're interested in MAXPHYS where we
attempt to mount the file system, not where we happen to create it)
2010-08-09 17:20:57 +00:00

879 lines
24 KiB
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/* $NetBSD: newfs.c,v 1.107 2010/08/09 17:20:57 pooka Exp $ */
/*
* Copyright (c) 1983, 1989, 1993, 1994
* 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.
*/
/*
* Copyright (c) 2002 Networks Associates Technology, Inc.
* All rights reserved.
*
* This software was developed for the FreeBSD Project by Marshall
* Kirk McKusick and Network Associates Laboratories, the Security
* Research Division of Network Associates, Inc. under DARPA/SPAWAR
* contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
* research program
*
* 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.
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1983, 1989, 1993, 1994\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)newfs.c 8.13 (Berkeley) 5/1/95";
#else
__RCSID("$NetBSD: newfs.c,v 1.107 2010/08/09 17:20:57 pooka Exp $");
#endif
#endif /* not lint */
/*
* newfs: friendly front end to mkfs
*/
#include <sys/param.h>
#include <sys/ioctl.h>
#include <sys/disklabel.h>
#include <sys/disk.h>
#include <sys/file.h>
#include <sys/mount.h>
#include <sys/sysctl.h>
#include <sys/wait.h>
#include <ufs/ufs/dir.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ufs/ufsmount.h>
#include <ufs/ffs/fs.h>
#include <ctype.h>
#include <disktab.h>
#include <err.h>
#include <errno.h>
#include <grp.h>
#include <limits.h>
#include <paths.h>
#include <pwd.h>
#include <signal.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#include <util.h>
#include <mntopts.h>
#ifdef MFS
#include <mountprog.h>
#endif
#include "dkcksum.h"
#include "extern.h"
#include "partutil.h"
struct mntopt mopts[] = {
MOPT_STDOPTS,
MOPT_ASYNC,
MOPT_UPDATE,
MOPT_GETARGS,
MOPT_NOATIME,
{ .m_option = NULL },
};
static gid_t mfs_group(const char *);
static uid_t mfs_user(const char *);
static int64_t strsuftoi64(const char *, const char *, int64_t, int64_t, int *);
static void usage(void) __dead;
#define COMPAT /* allow non-labeled disks */
#ifdef COMPAT
const char lmsg[] = "%s: can't read disk label; disk type must be specified";
#else
const char lmsg[] = "%s: can't read disk label";
#endif
/*
* The following two constants set the default block and fragment sizes.
* Both constants must be a power of 2 and meet the following constraints:
* MINBSIZE <= DESBLKSIZE <= MAXBSIZE
* sectorsize <= DESFRAGSIZE <= DESBLKSIZE
* DESBLKSIZE / DESFRAGSIZE <= 8
*/
/*
* For file systems smaller than SMALL_FSSIZE we use the S_DFL_* defaults,
* otherwise if less than MEDIUM_FSSIZE use M_DFL_*, otherwise use
* L_DFL_*.
*/
#define SMALL_FSSIZE (20*1024*2)
#define S_DFL_FRAGSIZE 512
#define MEDIUM_FSSIZE (1000*1024*2)
#define M_DFL_FRAGSIZE 1024
#define L_DFL_FRAGSIZE 2048
#define DFL_FRAG_BLK 8
/* Apple requires the fragment size to be at least APPLEUFS_DIRBLKSIZ
* but the block size cannot be larger than Darwin's PAGE_SIZE. See
* the mount check in Darwin's ffs_mountfs for an explanation.
*/
#define APPLEUFS_DFL_FRAGSIZE APPLEUFS_DIRBLKSIZ /* 1024 */
#define APPLEUFS_DFL_BLKSIZE 4096 /* default Darwin PAGE_SIZE */
/*
* Default sector size.
*/
#define DFL_SECSIZE 512
/*
* Default file system size for "mount_mfs swap /dir" case.
*/
#define DFL_FSSIZE (8 * 1024 * 1024)
/*
* MAXBLKPG determines the maximum number of data blocks which are
* placed in a single cylinder group. The default is one indirect
* block worth of data blocks.
*/
#define MAXBLKPG_UFS1(bsize) ((bsize) / sizeof(int32_t))
#define MAXBLKPG_UFS2(bsize) ((bsize) / sizeof(int64_t))
/*
* Each file system has a number of inodes statically allocated.
* We allocate one inode slot per NFPI fragments, expecting this
* to be far more than we will ever need.
*/
#define NFPI 4
int mfs; /* run as the memory based filesystem */
int Gflag; /* allow garbage parameters (for testing) */
int Nflag; /* run without writing file system */
int Oflag = 1; /* format as an 4.3BSD file system */
int verbosity; /* amount of printf() output */
#define DEFAULT_VERBOSITY 3 /* 4 is traditional behavior */
int64_t fssize; /* file system size */
int sectorsize; /* bytes/sector */
int fsize = 0; /* fragment size */
int bsize = 0; /* block size */
int maxbsize = 0; /* maximum clustering */
int minfree = MINFREE; /* free space threshold */
int opt = DEFAULTOPT; /* optimization preference (space or time) */
int density; /* number of bytes per inode */
int num_inodes; /* number of inodes (overrides density) */
int maxcontig = 0; /* max contiguous blocks to allocate */
int maxbpg; /* maximum blocks per file in a cyl group */
int avgfilesize = AVFILESIZ;/* expected average file size */
int avgfpdir = AFPDIR; /* expected number of files per directory */
int mntflags = 0; /* flags to be passed to mount */
u_long memleft; /* virtual memory available */
caddr_t membase; /* start address of memory based filesystem */
int needswap; /* Filesystem not in native byte order */
char *disktype = NULL;
int unlabeled;
char *appleufs_volname = 0; /* Apple UFS volume name */
int isappleufs = 0;
char device[MAXPATHLEN];
int
main(int argc, char *argv[])
{
struct disk_geom geo;
struct dkwedge_info dkw;
struct statvfs *mp;
struct stat sb;
int ch, fsi, fso, len, n, Fflag, Iflag, Zflag;
char *cp, *s1, *s2, *special;
const char *opstring;
int byte_sized = 0;
#ifdef MFS
struct mfs_args args;
char mountfromname[100];
char mounttoname[MAXPATHLEN];
pid_t pid, res;
struct statvfs sf;
int status;
#endif
mode_t mfsmode = 01777; /* default mode for a /tmp-type directory */
uid_t mfsuid = 0; /* user root */
gid_t mfsgid = 0; /* group wheel */
mntoptparse_t mo;
cp = NULL;
fsi = fso = -1;
Fflag = Iflag = Zflag = 0;
verbosity = -1;
if (strstr(getprogname(), "mfs")) {
mfs = 1;
} else {
/* Undocumented, for ease of testing */
if (argv[1] != NULL && !strcmp(argv[1], "-mfs")) {
argv++;
argc--;
mfs = 1;
}
}
opstring = mfs ?
"NT:V:a:b:d:e:f:g:h:i:m:n:o:p:s:u:" :
"B:FGINO:S:T:V:Za:b:d:e:f:g:h:i:l:m:n:o:r:s:v:";
while ((ch = getopt(argc, argv, opstring)) != -1)
switch (ch) {
case 'B':
if (strcmp(optarg, "be") == 0) {
#if BYTE_ORDER == LITTLE_ENDIAN
needswap = 1;
#endif
} else if (strcmp(optarg, "le") == 0) {
#if BYTE_ORDER == BIG_ENDIAN
needswap = 1;
#endif
} else
usage();
break;
case 'F':
Fflag = 1;
break;
case 'G':
fprintf(stderr, "WARNING: -G may create file systems "
"which cause kernel panics\n");
Gflag = 1;
break;
case 'I':
Iflag = 1;
break;
case 'N':
Nflag = 1;
if (verbosity == -1)
verbosity = DEFAULT_VERBOSITY;
break;
case 'O':
Oflag = strsuftoi64("format", optarg, 0, 2, NULL);
break;
case 'S':
/* XXX: non-512 byte sectors almost certainly don't work. */
sectorsize = strsuftoi64("sector size",
optarg, 512, 65536, NULL);
if (sectorsize & (sectorsize - 1))
errx(1, "sector size `%s' is not a power of 2.",
optarg);
break;
#ifdef COMPAT
case 'T':
disktype = optarg;
break;
#endif
case 'V':
verbosity = strsuftoi64("verbose", optarg, 0, 4, NULL);
break;
case 'Z':
Zflag = 1;
break;
case 'a':
maxcontig = strsuftoi64("maximum contiguous blocks",
optarg, 1, INT_MAX, NULL);
break;
case 'b':
bsize = strsuftoi64("block size",
optarg, MINBSIZE, MAXBSIZE, NULL);
break;
case 'd':
maxbsize = strsuftoi64("maximum extent size",
optarg, 0, INT_MAX, NULL);
break;
case 'e':
maxbpg = strsuftoi64(
"blocks per file in a cylinder group",
optarg, 1, INT_MAX, NULL);
break;
case 'f':
fsize = strsuftoi64("fragment size",
optarg, 1, MAXBSIZE, NULL);
break;
case 'g':
if (mfs)
mfsgid = mfs_group(optarg);
else {
avgfilesize = strsuftoi64("average file size",
optarg, 1, INT_MAX, NULL);
}
break;
case 'h':
avgfpdir = strsuftoi64("expected files per directory",
optarg, 1, INT_MAX, NULL);
break;
case 'i':
density = strsuftoi64("bytes per inode",
optarg, 1, INT_MAX, NULL);
break;
case 'm':
minfree = strsuftoi64("free space %",
optarg, 0, 99, NULL);
break;
case 'n':
num_inodes = strsuftoi64("number of inodes",
optarg, 1, INT_MAX, NULL);
break;
case 'o':
if (mfs) {
mo = getmntopts(optarg, mopts, &mntflags, 0);
if (mo == NULL)
err(1, "getmntopts");
freemntopts(mo);
} else {
if (strcmp(optarg, "space") == 0)
opt = FS_OPTSPACE;
else if (strcmp(optarg, "time") == 0)
opt = FS_OPTTIME;
else
errx(1, "%s %s",
"unknown optimization preference: ",
"use `space' or `time'.");
}
break;
case 'p':
/* mfs only */
if ((mfsmode = strtol(optarg, NULL, 8)) <= 0)
errx(1, "bad mode `%s'", optarg);
break;
case 's':
fssize = strsuftoi64("file system size",
optarg, INT64_MIN, INT64_MAX, &byte_sized);
break;
case 'u':
/* mfs only */
mfsuid = mfs_user(optarg);
break;
case 'v':
appleufs_volname = optarg;
if (strchr(appleufs_volname, ':') || strchr(appleufs_volname, '/'))
errx(1,"Apple UFS volume name cannot contain ':' or '/'");
if (appleufs_volname[0] == '\0')
errx(1,"Apple UFS volume name cannot be zero length");
isappleufs = 1;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (verbosity == -1)
/* Default to not showing CG info if mfs */
verbosity = mfs ? 0 : DEFAULT_VERBOSITY;
#ifdef MFS
/* This is enough to get through the correct kernel code paths */
memset(&args, 0, sizeof args);
args.fspec = mountfromname;
if (mntflags & (MNT_GETARGS | MNT_UPDATE)) {
if ((mntflags & MNT_GETARGS) == 0)
mntflags |= MNT_ASYNC;
if (mount(MOUNT_MFS, argv[1], mntflags,
&args, sizeof args) == -1)
err(1, "mount `%s' failed", argv[1]);
if (mntflags & MNT_GETARGS)
printf("base=%p, size=%ld\n", args.base, args.size);
exit(0);
}
#endif
if (argc != 2 && (mfs || argc != 1))
usage();
memset(&sb, 0, sizeof sb);
memset(&dkw, 0, sizeof dkw);
special = argv[0];
if (Fflag || mfs) {
/*
* It's a file system image or an MFS,
* no label, use fixed default for sectorsize.
*/
if (sectorsize == 0)
sectorsize = DFL_SECSIZE;
if (mfs) {
/*
* Default filesystem size to that of supplied device,
* and fall back to 8M
*/
if (fssize == 0)
if (stat(special, &sb) == -1)
fssize = DFL_FSSIZE / sectorsize;
} else {
/* creating image in a regular file */
int fl;
if (Nflag)
fl = O_RDONLY;
else {
if (fssize > 0)
fl = O_RDWR | O_CREAT;
else
fl = O_RDWR;
}
fsi = open(special, fl, 0777);
if (fsi == -1)
err(1, "can't open file %s", special);
if (fstat(fsi, &sb) == -1)
err(1, "can't fstat opened %s", special);
if (!Nflag)
fso = fsi;
}
} else { /* !Fflag && !mfs */
fsi = opendisk(special, O_RDONLY, device, sizeof(device), 0);
special = device;
if (fsi < 0 || fstat(fsi, &sb) == -1)
err(1, "%s: open for read", special);
if (S_ISBLK(sb.st_mode)) {
errx(1, "%s is a block device. use raw device",
special);
}
if (!Nflag) {
fso = open(special, O_WRONLY, 0);
if (fso < 0)
err(1, "%s: open for write", special);
/* Bail if target special is mounted */
n = getmntinfo(&mp, MNT_NOWAIT);
if (n == 0)
err(1, "%s: getmntinfo", special);
len = sizeof(_PATH_DEV) - 1;
s1 = special;
if (strncmp(_PATH_DEV, s1, len) == 0)
s1 += len;
while (--n >= 0) {
s2 = mp->f_mntfromname;
if (strncmp(_PATH_DEV, s2, len) == 0) {
s2 += len - 1;
*s2 = 'r';
}
if (strcmp(s1, s2) == 0 ||
strcmp(s1, &s2[1]) == 0)
errx(1, "%s is mounted on %s",
special, mp->f_mntonname);
++mp;
}
}
#ifdef COMPAT
if (disktype == NULL)
disktype = argv[1];
#endif
if (getdiskinfo(special, fsi, disktype, &geo, &dkw) == -1)
errx(1, lmsg, special);
unlabeled = disktype != NULL;
if (sectorsize == 0) {
sectorsize = geo.dg_secsize;
if (sectorsize <= 0)
errx(1, "no default sector size");
}
if (dkw.dkw_parent[0]) {
if (dkw.dkw_size == 0)
errx(1, "%s partition is unavailable", special);
if (strcmp(dkw.dkw_ptype, DKW_PTYPE_APPLEUFS) == 0)
isappleufs = 1;
if (!Iflag) {
static const char m[] =
"%s partition type is not `%s'";
if (isappleufs) {
if (strcmp(dkw.dkw_ptype,
DKW_PTYPE_APPLEUFS))
errx(1, m,
special, "Apple UFS");
} else {
if (strcmp(dkw.dkw_ptype,
DKW_PTYPE_FFS))
errx(1, m, special, "4.2BSD");
}
}
} /* !Fflag && !mfs */
}
if (byte_sized)
fssize /= sectorsize;
if (fssize <= 0) {
if (sb.st_size != 0)
fssize += sb.st_size / sectorsize;
else
fssize += dkw.dkw_size;
if (fssize <= 0)
errx(1, "Unable to determine file system size");
}
if (dkw.dkw_parent[0] && (uint64_t)fssize > dkw.dkw_size)
errx(1, "size %" PRIu64 " exceeds maximum file system size on "
"`%s' of %" PRIu64 " sectors",
fssize, special, dkw.dkw_size);
/* XXXLUKEM: only ftruncate() regular files ? (dsl: or at all?) */
if (Fflag && fso != -1
&& ftruncate(fso, (off_t)fssize * sectorsize) == -1)
err(1, "can't ftruncate %s to %" PRId64, special, fssize);
if (Zflag && fso != -1) { /* pre-zero (and de-sparce) the file */
char *buf;
int bufsize, i;
off_t bufrem;
struct statvfs sfs;
if (fstatvfs(fso, &sfs) == -1) {
warn("can't fstatvfs `%s'", special);
bufsize = 8192;
} else
bufsize = sfs.f_iosize;
if ((buf = calloc(1, bufsize)) == NULL)
err(1, "can't malloc buffer of %d",
bufsize);
bufrem = fssize * sectorsize;
if (verbosity > 0)
printf( "Creating file system image in `%s', "
"size %lld bytes, in %d byte chunks.\n",
special, (long long)bufrem, bufsize);
while (bufrem > 0) {
i = write(fso, buf, MIN(bufsize, bufrem));
if (i == -1)
err(1, "writing image");
bufrem -= i;
}
free(buf);
}
/* Sort out fragment and block sizes */
if (fsize == 0) {
fsize = bsize / DFL_FRAG_BLK;
if (fsize <= 0) {
if (isappleufs) {
fsize = APPLEUFS_DFL_FRAGSIZE;
} else {
if (fssize < SMALL_FSSIZE)
fsize = S_DFL_FRAGSIZE;
else if (fssize < MEDIUM_FSSIZE)
fsize = M_DFL_FRAGSIZE;
else
fsize = L_DFL_FRAGSIZE;
if (fsize < sectorsize)
fsize = sectorsize;
}
}
}
if (bsize <= 0) {
if (isappleufs)
bsize = APPLEUFS_DFL_BLKSIZE;
else
bsize = DFL_FRAG_BLK * fsize;
}
if (isappleufs && (fsize < APPLEUFS_DFL_FRAGSIZE)) {
warnx("Warning: chosen fsize of %d is less than Apple UFS minimum of %d",
fsize, APPLEUFS_DFL_FRAGSIZE);
}
if (isappleufs && (bsize > APPLEUFS_DFL_BLKSIZE)) {
warnx("Warning: chosen bsize of %d is greater than Apple UFS maximum of %d",
bsize, APPLEUFS_DFL_BLKSIZE);
}
/*
* Maxcontig sets the default for the maximum number of blocks
* that may be allocated sequentially. With filesystem clustering
* it is possible to allocate contiguous blocks up to the maximum
* transfer size permitted by the controller or buffering.
*/
if (maxcontig == 0)
maxcontig = MAX(1, MIN(MAXPHYS, MAXBSIZE) / bsize);
if (density == 0)
density = NFPI * fsize;
if (minfree < MINFREE && opt != FS_OPTSPACE) {
warnx("%s %s %d%%", "Warning: changing optimization to space",
"because minfree is less than", MINFREE);
opt = FS_OPTSPACE;
}
if (maxbpg == 0) {
if (Oflag <= 1)
maxbpg = MAXBLKPG_UFS1(bsize);
else
maxbpg = MAXBLKPG_UFS2(bsize);
}
mkfs(special, fsi, fso, mfsmode, mfsuid, mfsgid);
if (fsi != -1 && fsi != fso)
close(fsi);
if (fso != -1)
close(fso);
#ifdef MFS
if (mfs) {
pathadj(argv[1], mounttoname);
switch (pid = fork()) {
case -1:
perror("mfs");
exit(10);
case 0:
(void)snprintf(mountfromname, sizeof(mountfromname),
"mfs:%d", getpid());
break;
default:
(void)snprintf(mountfromname, sizeof(mountfromname),
"mfs:%d", pid);
for (;;) {
/*
* spin until the mount succeeds
* or the child exits
*/
usleep(1);
/*
* XXX Here is a race condition: another process
* can mount a filesystem which hides our
* ramdisk before we see the success.
*/
if (statvfs(mounttoname, &sf) < 0)
err(88, "statvfs %s", mounttoname);
if (!strcmp(sf.f_mntfromname, mountfromname) &&
!strncmp(sf.f_mntonname, mounttoname,
MNAMELEN) &&
!strcmp(sf.f_fstypename, "mfs"))
exit(0);
res = waitpid(pid, &status, WNOHANG);
if (res == -1)
err(11, "waitpid");
if (res != pid)
continue;
if (WIFEXITED(status)) {
if (WEXITSTATUS(status) == 0)
exit(0);
errx(1, "%s: mount: %s", mounttoname,
strerror(WEXITSTATUS(status)));
} else
errx(11, "abnormal termination");
}
/* NOTREACHED */
}
(void) setsid();
(void) close(0);
(void) close(1);
(void) close(2);
(void) chdir("/");
args.base = membase;
args.size = fssize * sectorsize;
if (mount(MOUNT_MFS, mounttoname, mntflags | MNT_ASYNC,
&args, sizeof args) == -1)
exit(errno); /* parent prints message */
}
#endif
exit(0);
}
static gid_t
mfs_group(const char *gname)
{
struct group *gp;
if (!(gp = getgrnam(gname)) && !isdigit((unsigned char)*gname))
errx(1, "unknown gname %s", gname);
return gp ? gp->gr_gid : (gid_t)atoi(gname);
}
static uid_t
mfs_user(const char *uname)
{
struct passwd *pp;
if (!(pp = getpwnam(uname)) && !isdigit((unsigned char)*uname))
errx(1, "unknown user %s", uname);
return pp ? pp->pw_uid : (uid_t)atoi(uname);
}
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 't': case 'T':
shift += 10;
/* FALLTHROUGH */
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) {
if (Gflag) {
warnx("%s `%s' (%" PRId64 ") is less than the "
"minimum (%" PRId64 ").", desc, arg, result, min);
} else {
errx(1, "%s `%s' (%" PRId64 ") is less than the "
"minimum (%" PRId64 ").", desc, arg, result, min);
}
}
if (result > max) {
if (Gflag) {
warnx("%s `%s' (%" PRId64 ") is greater than the "
"maximum (%" PRId64 ").", desc, arg, result, max);
} else {
errx(1, "%s `%s' (%" PRId64 ") is greater than the "
"maximum (%" PRId64 ").", desc, arg, result, max);
}
}
return result;
}
#define NEWFS 1
#define MFS_MOUNT 2
#define BOTH NEWFS | MFS_MOUNT
struct help_strings {
int flags;
const char *str;
} const help_strings[] = {
{ NEWFS, "-B byteorder\tbyte order (`be' or `le')" },
{ NEWFS, "-F \t\tcreate file system image in regular file" },
{ NEWFS, "-I \t\tdo not check that the file system type is '4.2BSD'" },
{ BOTH, "-N \t\tdo not create file system, just print out "
"parameters" },
{ NEWFS, "-O N\t\tfilesystem format: 0 ==> 4.3BSD, 1 ==> FFSv1, 2 ==> FFSv2" },
{ NEWFS, "-S secsize\tsector size" },
#ifdef COMPAT
{ NEWFS, "-T disktype\tdisk type" },
#endif
{ BOTH, "-V verbose\toutput verbosity: 0 ==> none, 4 ==> max" },
{ NEWFS, "-Z \t\tpre-zero the image file" },
{ BOTH, "-a maxcontig\tmaximum contiguous blocks" },
{ BOTH, "-b bsize\tblock size" },
{ BOTH, "-d maxbsize\tmaximum extent size" },
{ BOTH, "-e maxbpg\tmaximum blocks per file in a cylinder group"
},
{ BOTH, "-f fsize\tfrag size" },
{ NEWFS, "-g avgfilesize\taverage file size" },
{ MFS_MOUNT, "-g groupname\tgroup name of mount point" },
{ BOTH, "-h avgfpdir\taverage files per directory" },
{ BOTH, "-i density\tnumber of bytes per inode" },
{ BOTH, "-m minfree\tminimum free space %%" },
{ BOTH, "-n inodes\tnumber of inodes (overrides -i density)" },
{ BOTH, "-o optim\toptimization preference (`space' or `time')"
},
{ MFS_MOUNT, "-p perm\t\tpermissions (in octal)" },
{ BOTH, "-s fssize\tfile system size (sectors)" },
{ MFS_MOUNT, "-u username\tuser name of mount point" },
{ NEWFS, "-v volname\tApple UFS volume name" },
{ 0, NULL }
};
static void
usage(void)
{
int match;
const struct help_strings *hs;
if (mfs) {
fprintf(stderr,
"usage: %s [ fsoptions ] special-device mount-point\n",
getprogname());
} else
fprintf(stderr,
"usage: %s [ fsoptions ] special-device%s\n",
getprogname(),
#ifdef COMPAT
" [disk-type]");
#else
"");
#endif
fprintf(stderr, "where fsoptions are:\n");
match = mfs ? MFS_MOUNT : NEWFS;
for (hs = help_strings; hs->flags != 0; hs++)
if (hs->flags & match)
fprintf(stderr, "\t%s\n", hs->str);
exit(1);
}
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