freebsd-src/sbin/tunefs/tunefs.c

406 lines
11 KiB
C

/*
* Copyright (c) 1983, 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 const char copyright[] =
"@(#) Copyright (c) 1983, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)tunefs.c 8.2 (Berkeley) 4/19/94";
#endif
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
/*
* tunefs: change layout parameters to an existing file system.
*/
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/disklabel.h>
#include <sys/stat.h>
#include <ufs/ufs/ufsmount.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ffs/fs.h>
#include <err.h>
#include <fcntl.h>
#include <fstab.h>
#include <libufs.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
/* the optimization warning string template */
#define OPTWARN "should optimize for %s with minfree %s %d%%"
struct uufsd disk;
#define sblock disk.d_fs
void usage(void);
void printfs(void);
int
main(int argc, char *argv[])
{
char *special;
const char *name;
struct stat st;
int Aflag = 0, active = 0, aflag = 0;
int eflag = 0, fflag = 0, lflag = 0, mflag = 0;
int nflag = 0, oflag = 0, pflag = 0, sflag = 0;
int evalue = 0, fvalue = 0;
int mvalue = 0, ovalue = 0, svalue = 0;
char *avalue = NULL, *lvalue = NULL, *nvalue = NULL;
struct fstab *fs;
const char *chg[2];
char device[MAXPATHLEN];
struct ufs_args args;
struct statfs stfs;
int found_arg, ch;
if (argc < 3)
usage();
found_arg = 0; /* at least one arg is required */
while ((ch = getopt(argc, argv, "Aa:e:f:l:m:n:o:ps:")) != -1)
switch (ch) {
case 'A':
found_arg = 1;
Aflag++;
break;
case 'a':
found_arg = 1;
name = "ACLs";
avalue = optarg;
if (strcmp(avalue, "enable") && strcmp(avalue, "disable")) {
errx(10, "bad %s (options are %s)", name,
"`enable' or `disable'");
}
aflag = 1;
break;
case 'e':
found_arg = 1;
name = "maximum blocks per file in a cylinder group";
evalue = atoi(optarg);
if (evalue < 1)
errx(10, "%s must be >= 1 (was %s)", name, optarg);
eflag = 1;
break;
case 'f':
found_arg = 1;
name = "average file size";
fvalue = atoi(optarg);
if (fvalue < 1)
errx(10, "%s must be >= 1 (was %s)", name, optarg);
fflag = 1;
break;
case 'l':
found_arg = 1;
name = "multilabel MAC file system";
lvalue = optarg;
if (strcmp(lvalue, "enable") && strcmp(lvalue, "disable")) {
errx(10, "bad %s (options are %s)", name,
"`enable' or `disable'");
}
lflag = 1;
break;
case 'm':
found_arg = 1;
name = "minimum percentage of free space";
mvalue = atoi(optarg);
if (mvalue < 0 || mvalue > 99)
errx(10, "bad %s (%s)", name, optarg);
mflag = 1;
break;
case 'n':
found_arg = 1;
name = "soft updates";
nvalue = optarg;
if (strcmp(nvalue, "enable") && strcmp(nvalue, "disable")) {
errx(10, "bad %s (options are %s)",
name, "`enable' or `disable'");
}
nflag = 1;
break;
case 'o':
found_arg = 1;
name = "optimization preference";
chg[FS_OPTSPACE] = "space";
chg[FS_OPTTIME] = "time";
if (strcmp(optarg, chg[FS_OPTSPACE]) == 0)
ovalue = FS_OPTSPACE;
else if (strcmp(optarg, chg[FS_OPTTIME]) == 0)
ovalue = FS_OPTTIME;
else
errx(10, "bad %s (options are `space' or `time')",
name);
oflag = 1;
break;
case 'p':
found_arg = 1;
pflag = 1;
break;
case 's':
found_arg = 1;
name = "expected number of files per directory";
svalue = atoi(optarg);
if (svalue < 1)
errx(10, "%s must be >= 1 (was %s)", name, optarg);
sflag = 1;
break;
default:
usage();
}
argc -= optind;
argv += optind;
if (found_arg == 0 || argc != 1)
usage();
special = argv[0];
fs = getfsfile(special);
if (fs) {
if (statfs(special, &stfs) == 0 &&
strcmp(special, stfs.f_mntonname) == 0) {
active = 1;
}
special = fs->fs_spec;
}
again:
if (stat(special, &st) < 0) {
if (*special != '/') {
if (*special == 'r')
special++;
(void)snprintf(device, sizeof(device), "%s%s",
_PATH_DEV, special);
special = device;
goto again;
}
err(1, "%s", special);
}
if (fs == NULL && (st.st_mode & S_IFMT) == S_IFDIR)
errx(10, "%s: unknown file system", special);
if (ufs_disk_fillout(&disk, special) == -1) {
if (disk.d_error != NULL)
errx(11, "%s: %s", special, disk.d_error);
else
err(12, "%s", special);
}
if (pflag) {
printfs();
exit(0);
}
if (aflag) {
name = "ACLs";
if (strcmp(avalue, "enable") == 0) {
if (sblock.fs_flags & FS_ACLS) {
warnx("%s remains unchanged as enabled", name);
} else {
sblock.fs_flags |= FS_ACLS;
warnx("%s set", name);
}
} else if (strcmp(avalue, "disable") == 0) {
if ((~sblock.fs_flags & FS_ACLS) ==
FS_ACLS) {
warnx("%s remains unchanged as disabled",
name);
} else {
sblock.fs_flags &= ~FS_ACLS;
warnx("%s cleared", name);
}
}
}
if (eflag) {
name = "maximum blocks per file in a cylinder group";
if (sblock.fs_maxbpg == evalue) {
warnx("%s remains unchanged as %d", name, evalue);
}
else {
warnx("%s changes from %d to %d",
name, sblock.fs_maxbpg, evalue);
sblock.fs_maxbpg = evalue;
}
}
if (fflag) {
name = "average file size";
if (sblock.fs_avgfilesize == fvalue) {
warnx("%s remains unchanged as %d", name, fvalue);
}
else {
warnx("%s changes from %d to %d",
name, sblock.fs_avgfilesize, fvalue);
sblock.fs_avgfilesize = fvalue;
}
}
if (lflag) {
name = "multilabel";
if (strcmp(lvalue, "enable") == 0) {
if (sblock.fs_flags & FS_MULTILABEL) {
warnx("%s remains unchanged as enabled", name);
} else {
sblock.fs_flags |= FS_MULTILABEL;
warnx("%s set", name);
}
} else if (strcmp(lvalue, "disable") == 0) {
if ((~sblock.fs_flags & FS_MULTILABEL) ==
FS_MULTILABEL) {
warnx("%s remains unchanged as disabled",
name);
} else {
sblock.fs_flags &= ~FS_MULTILABEL;
warnx("%s cleared", name);
}
}
}
if (mflag) {
name = "minimum percentage of free space";
if (sblock.fs_minfree == mvalue) {
warnx("%s remains unchanged as %d%%", name, mvalue);
}
else {
warnx("%s changes from %d%% to %d%%",
name, sblock.fs_minfree, mvalue);
sblock.fs_minfree = mvalue;
if (mvalue >= MINFREE && sblock.fs_optim == FS_OPTSPACE)
warnx(OPTWARN, "time", ">=", MINFREE);
if (mvalue < MINFREE && sblock.fs_optim == FS_OPTTIME)
warnx(OPTWARN, "space", "<", MINFREE);
}
}
if (nflag) {
name = "soft updates";
if (strcmp(nvalue, "enable") == 0) {
if (sblock.fs_flags & FS_DOSOFTDEP) {
warnx("%s remains unchanged as enabled", name);
} else if (sblock.fs_clean == 0) {
warnx("%s cannot be enabled until fsck is run",
name);
} else {
sblock.fs_flags |= FS_DOSOFTDEP;
warnx("%s set", name);
}
} else if (strcmp(nvalue, "disable") == 0) {
if ((~sblock.fs_flags & FS_DOSOFTDEP) == FS_DOSOFTDEP) {
warnx("%s remains unchanged as disabled", name);
} else {
sblock.fs_flags &= ~FS_DOSOFTDEP;
warnx("%s cleared", name);
}
}
}
if (oflag) {
name = "optimization preference";
chg[FS_OPTSPACE] = "space";
chg[FS_OPTTIME] = "time";
if (sblock.fs_optim == ovalue) {
warnx("%s remains unchanged as %s", name, chg[ovalue]);
}
else {
warnx("%s changes from %s to %s",
name, chg[sblock.fs_optim], chg[ovalue]);
sblock.fs_optim = ovalue;
if (sblock.fs_minfree >= MINFREE &&
ovalue == FS_OPTSPACE)
warnx(OPTWARN, "time", ">=", MINFREE);
if (sblock.fs_minfree < MINFREE &&
ovalue == FS_OPTTIME)
warnx(OPTWARN, "space", "<", MINFREE);
}
}
if (sflag) {
name = "expected number of files per directory";
if (sblock.fs_avgfpdir == svalue) {
warnx("%s remains unchanged as %d", name, svalue);
}
else {
warnx("%s changes from %d to %d",
name, sblock.fs_avgfpdir, svalue);
sblock.fs_avgfpdir = svalue;
}
}
sbwrite(&disk, Aflag);
if (active) {
bzero(&args, sizeof(args));
if (mount("ufs", fs->fs_file,
stfs.f_flags | MNT_UPDATE | MNT_RELOAD, &args) < 0)
err(9, "%s: reload", special);
warnx("file system reloaded");
}
exit(0);
}
void
usage(void)
{
fprintf(stderr, "%s\n%s\n%s\n",
"usage: tunefs [-A] [-a enable | disable] [-e maxbpg] [-f avgfilesize]",
" [-l enable | disable] [-m minfree] [-n enable | disable]",
" [-o space | time] [-p] [-s avgfpdir] special | filesystem");
exit(2);
}
void
printfs(void)
{
warnx("ACLs: (-a) %s",
(sblock.fs_flags & FS_ACLS)? "enabled" : "disabled");
warnx("MAC multilabel: (-l) %s",
(sblock.fs_flags & FS_MULTILABEL)? "enabled" : "disabled");
warnx("soft updates: (-n) %s",
(sblock.fs_flags & FS_DOSOFTDEP)? "enabled" : "disabled");
warnx("maximum blocks per file in a cylinder group: (-e) %d",
sblock.fs_maxbpg);
warnx("average file size: (-f) %d",
sblock.fs_avgfilesize);
warnx("average number of files in a directory: (-s) %d",
sblock.fs_avgfpdir);
warnx("minimum percentage of free space: (-m) %d%%",
sblock.fs_minfree);
warnx("optimization preference: (-o) %s",
sblock.fs_optim == FS_OPTSPACE ? "space" : "time");
if (sblock.fs_minfree >= MINFREE &&
sblock.fs_optim == FS_OPTSPACE)
warnx(OPTWARN, "time", ">=", MINFREE);
if (sblock.fs_minfree < MINFREE &&
sblock.fs_optim == FS_OPTTIME)
warnx(OPTWARN, "space", "<", MINFREE);
}