Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
NetBSD/sbin/newfs/newfs.c

880 lines
24 KiB
C
Raw Blame History

/* $NetBSD: newfs.c,v 1.108 2010/08/09 21:14:26 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 1.108 2010/08/09 21:14:26 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, "-G \t\tmake sanity calculations non-fatal (testing only!)" },
{ 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);
}
Reference in New Issue View Git Blame Copy Permalink