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freebsd-dev/sbin/tunefs/tunefs.c
Kirk McKusick 906c312bbf Document the mntopts(3) functions. 
The mntopts(3) functions support operations associated with a mount
point. The main purpose of this commit is to document the mntopts(3)
functions that now appear in 18 utilities in the base system. See
mntopts(3) for the documentation details.

The getmntopts() function appeared in 4.4BSD. The build_iovec(),
build_iovec_argf(), free_iovec(), checkpath(), and rmslashes()
functions were added with nmount(8) in FreeBSD 5.0. The getmntpoint()
and chkdoreload() functions are being added in this commit.

These functions should be in a library but for historic reasons are
in a file in the sources for the mount(8) program. Thus, to access
them the following lines need to be added to the Makefile of the
program wanting to use them:

SRCS+= getmntopts.c
MOUNT= ${SRCTOP}/sbin/mount
CFLAGS+= -I${MOUNT}
.PATH: ${MOUNT}

Once these changes have been MFC'ed to 13 they may be made into
a library.

Reviewed by:  kib, gbe
MFC after:    2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D37907
2023-01-15 10:21:31 -08:00

1119 lines
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/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* 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. 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.
*/
#if 0
#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
static char sccsid[] = "@(#)tunefs.c 8.2 (Berkeley) 4/19/94";
#endif /* not lint */
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* 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/extattr.h>
#include <ufs/ufs/quota.h>
#include <ufs/ufs/ufsmount.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ffs/fs.h>
#include <ufs/ufs/dir.h>
#include <ctype.h>
#include <err.h>
#include <fcntl.h>
#include <fstab.h>
#include <libufs.h>
#include <mntopts.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
/* the optimization warning string template */
#define OPTWARN "should optimize for %s with minfree %s %d%%"
static int blocks;
static char clrbuf[MAXBSIZE];
static struct uufsd disk;
#define sblock disk.d_fs
static void usage(void);
static void printfs(void);
static int journal_alloc(int64_t size);
static void journal_clear(void);
static void sbdirty(void);
int
main(int argc, char *argv[])
{
const char *avalue, *jvalue, *Jvalue, *Lvalue, *lvalue, *Nvalue, *nvalue;
const char *tvalue;
const char *special;
const char *name;
char *diskname;
int Aflag, aflag, eflag, evalue, fflag, fvalue, jflag, Jflag, kflag;
int kvalue, Lflag, lflag, mflag, mvalue, Nflag, nflag, oflag, ovalue;
int pflag, sflag, svalue, Svalue, tflag;
int ch, found_arg, i;
const char *chg[2];
if (argc < 3)
usage();
Aflag = aflag = eflag = fflag = jflag = Jflag = kflag = Lflag = 0;
lflag = mflag = Nflag = nflag = oflag = pflag = sflag = tflag = 0;
avalue = jvalue = Jvalue = Lvalue = lvalue = Nvalue = nvalue = NULL;
evalue = fvalue = mvalue = ovalue = svalue = Svalue = 0;
found_arg = 0; /* At least one arg is required. */
while ((ch = getopt(argc, argv, "Aa:e:f:j:J:k:L:l:m:N:n:o:ps:S:t:"))
!= -1)
switch (ch) {
case 'A':
found_arg++;
Aflag++;
break;
case 'a':
found_arg++;
name = "POSIX.1e 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++;
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++;
name = "average file size";
fvalue = atoi(optarg);
if (fvalue < 1)
errx(10, "%s must be >= 1 (was %s)",
name, optarg);
fflag = 1;
break;
case 'j':
found_arg++;
name = "softdep journaled file system";
jvalue = optarg;
if (strcmp(jvalue, "enable") &&
strcmp(jvalue, "disable")) {
errx(10, "bad %s (options are %s)",
name, "`enable' or `disable'");
}
jflag = 1;
break;
case 'J':
found_arg++;
name = "gjournaled file system";
Jvalue = optarg;
if (strcmp(Jvalue, "enable") &&
strcmp(Jvalue, "disable")) {
errx(10, "bad %s (options are %s)",
name, "`enable' or `disable'");
}
Jflag = 1;
break;
case 'k':
found_arg++;
name = "space to hold for metadata blocks";
kvalue = atoi(optarg);
if (kvalue < 0)
errx(10, "bad %s (%s)", name, optarg);
kflag = 1;
break;
case 'L':
found_arg++;
name = "volume label";
Lvalue = optarg;
i = -1;
while (isalnum(Lvalue[++i]) || Lvalue[i] == '_' ||
Lvalue[i] == '-')
;
if (Lvalue[i] != '\0') {
errx(10, "bad %s. Valid characters are "
"alphanumerics, dashes, and underscores.",
name);
}
if (strlen(Lvalue) >= MAXVOLLEN) {
errx(10, "bad %s. Length is longer than %d.",
name, MAXVOLLEN - 1);
}
Lflag = 1;
break;
case 'l':
found_arg++;
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++;
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++;
name = "NFSv4 ACLs";
Nvalue = optarg;
if (strcmp(Nvalue, "enable") &&
strcmp(Nvalue, "disable")) {
errx(10, "bad %s (options are %s)",
name, "`enable' or `disable'");
}
Nflag = 1;
break;
case 'n':
found_arg++;
name = "soft updates";
nvalue = optarg;
if (strcmp(nvalue, "enable") != 0 &&
strcmp(nvalue, "disable") != 0) {
errx(10, "bad %s (options are %s)",
name, "`enable' or `disable'");
}
nflag = 1;
break;
case 'o':
found_arg++;
name = "optimization preference";
if (strcmp(optarg, "space") == 0)
ovalue = FS_OPTSPACE;
else if (strcmp(optarg, "time") == 0)
ovalue = FS_OPTTIME;
else
errx(10,
"bad %s (options are `space' or `time')",
name);
oflag = 1;
break;
case 'p':
found_arg++;
pflag = 1;
break;
case 's':
found_arg++;
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;
case 'S':
found_arg++;
name = "Softdep Journal Size";
Svalue = atoi(optarg);
if (Svalue < SUJ_MIN)
errx(10, "%s must be >= %d (was %s)",
name, SUJ_MIN, optarg);
break;
case 't':
found_arg++;
name = "trim";
tvalue = optarg;
if (strcmp(tvalue, "enable") != 0 &&
strcmp(tvalue, "disable") != 0) {
errx(10, "bad %s (options are %s)",
name, "`enable' or `disable'");
}
tflag = 1;
break;
default:
usage();
}
argc -= optind;
argv += optind;
if (found_arg == 0 || argc != 1)
usage();
special = argv[0];
if (ufs_disk_fillout(&disk, special) == -1)
goto err;
/*
* Check for unclean filesystem.
*/
if ((sblock.fs_clean == 0 ||
(sblock.fs_flags & (FS_UNCLEAN | FS_NEEDSFSCK)) != 0) &&
(found_arg > 1 || !pflag))
errx(1, "%s is not clean - run fsck.\n", special);
if (pflag) {
printfs();
exit(0);
}
if (Lflag) {
name = "volume label";
strncpy(sblock.fs_volname, Lvalue, MAXVOLLEN);
}
if (aflag) {
name = "POSIX.1e ACLs";
if (strcmp(avalue, "enable") == 0) {
if (sblock.fs_flags & FS_ACLS) {
warnx("%s remains unchanged as enabled", name);
} else if (sblock.fs_flags & FS_NFS4ACLS) {
warnx("%s and NFSv4 ACLs are mutually "
"exclusive", 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 == (unsigned)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 (jflag) {
name = "soft updates journaling";
if (strcmp(jvalue, "enable") == 0) {
if ((sblock.fs_flags & (FS_DOSOFTDEP | FS_SUJ)) ==
(FS_DOSOFTDEP | FS_SUJ)) {
warnx("%s remains unchanged as enabled", name);
} else if (sblock.fs_clean == 0) {
warnx("%s cannot be enabled until fsck is run",
name);
} else if (journal_alloc(Svalue) != 0) {
warnx("%s cannot be enabled", name);
} else {
sblock.fs_flags |= FS_DOSOFTDEP | FS_SUJ;
warnx("%s set", name);
}
} else if (strcmp(jvalue, "disable") == 0) {
if ((~sblock.fs_flags & FS_SUJ) == FS_SUJ) {
warnx("%s remains unchanged as disabled", name);
} else {
journal_clear();
sblock.fs_flags &= ~FS_SUJ;
sblock.fs_sujfree = 0;
warnx("%s cleared but soft updates still set.",
name);
warnx("remove .sujournal to reclaim space");
}
}
}
if (Jflag) {
name = "gjournal";
if (strcmp(Jvalue, "enable") == 0) {
if (sblock.fs_flags & FS_GJOURNAL) {
warnx("%s remains unchanged as enabled", name);
} else {
sblock.fs_flags |= FS_GJOURNAL;
warnx("%s set", name);
}
} else if (strcmp(Jvalue, "disable") == 0) {
if ((~sblock.fs_flags & FS_GJOURNAL) ==
FS_GJOURNAL) {
warnx("%s remains unchanged as disabled",
name);
} else {
sblock.fs_flags &= ~FS_GJOURNAL;
warnx("%s cleared", name);
}
}
}
if (kflag) {
name = "space to hold for metadata blocks";
if (sblock.fs_metaspace == kvalue)
warnx("%s remains unchanged as %d", name, kvalue);
else {
kvalue = blknum(&sblock, kvalue);
if (kvalue > sblock.fs_fpg / 2) {
kvalue = blknum(&sblock, sblock.fs_fpg / 2);
warnx("%s cannot exceed half the file system "
"space", name);
}
warnx("%s changes from %jd to %d",
name, sblock.fs_metaspace, kvalue);
sblock.fs_metaspace = kvalue;
}
}
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 = "NFSv4 ACLs";
if (strcmp(Nvalue, "enable") == 0) {
if (sblock.fs_flags & FS_NFS4ACLS) {
warnx("%s remains unchanged as enabled", name);
} else if (sblock.fs_flags & FS_ACLS) {
warnx("%s and POSIX.1e ACLs are mutually "
"exclusive", name);
} else {
sblock.fs_flags |= FS_NFS4ACLS;
warnx("%s set", name);
}
} else if (strcmp(Nvalue, "disable") == 0) {
if ((~sblock.fs_flags & FS_NFS4ACLS) ==
FS_NFS4ACLS) {
warnx("%s remains unchanged as disabled",
name);
} else {
sblock.fs_flags &= ~FS_NFS4ACLS;
warnx("%s cleared", name);
}
}
}
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 == (unsigned)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;
}
}
if (tflag) {
name = "issue TRIM to the disk";
if (strcmp(tvalue, "enable") == 0) {
if (sblock.fs_flags & FS_TRIM)
warnx("%s remains unchanged as enabled", name);
else {
sblock.fs_flags |= FS_TRIM;
warnx("%s set", name);
}
} else if (strcmp(tvalue, "disable") == 0) {
if ((~sblock.fs_flags & FS_TRIM) == FS_TRIM)
warnx("%s remains unchanged as disabled", name);
else {
sblock.fs_flags &= ~FS_TRIM;
warnx("%s cleared", name);
}
}
}
if (sbwrite(&disk, Aflag) == -1)
goto err;
diskname = strdup(disk.d_name);
ufs_disk_close(&disk);
chkdoreload(getmntpoint(diskname), warnx);
exit(0);
err:
if (disk.d_error != NULL)
errx(11, "%s: %s", special, disk.d_error);
else
err(12, "%s", special);
}
static void
sbdirty(void)
{
disk.d_fs.fs_flags |= FS_UNCLEAN | FS_NEEDSFSCK;
disk.d_fs.fs_clean = 0;
}
static ufs2_daddr_t
journal_balloc(void)
{
ufs2_daddr_t blk;
struct cg *cgp;
int valid;
static int contig = 1;
cgp = &disk.d_cg;
for (;;) {
blk = cgballoc(&disk);
if (blk > 0)
break;
/*
* If we failed to allocate a block from this cg, move to
* the next.
*/
if (cgwrite(&disk) < 0) {
warn("Failed to write updated cg");
return (-1);
}
while ((valid = cgread(&disk)) == 1) {
/*
* Try to minimize fragmentation by requiring a minimum
* number of blocks present.
*/
if (cgp->cg_cs.cs_nbfree > 256 * 1024)
break;
if (contig == 0 && cgp->cg_cs.cs_nbfree)
break;
}
if (valid)
continue;
/*
* Try once through looking only for large contiguous regions
* and again taking any space we can find.
*/
if (contig) {
contig = 0;
disk.d_ccg = 0;
warnx("Journal file fragmented.");
continue;
}
warnx("Failed to find sufficient free blocks for the journal");
return -1;
}
if (bwrite(&disk, fsbtodb(&sblock, blk), clrbuf,
sblock.fs_bsize) <= 0) {
warn("Failed to initialize new block");
return -1;
}
return (blk);
}
/*
* Search a directory block for the SUJ_FILE.
*/
static ino_t
dir_search(ufs2_daddr_t blk, int bytes)
{
char block[MAXBSIZE];
struct direct *dp;
int off;
if (bread(&disk, fsbtodb(&sblock, blk), block, bytes) <= 0) {
warn("Failed to read dir block");
return (-1);
}
for (off = 0; off < bytes; off += dp->d_reclen) {
dp = (struct direct *)&block[off];
if (dp->d_reclen == 0)
break;
if (dp->d_ino == 0)
continue;
if (dp->d_namlen != strlen(SUJ_FILE))
continue;
if (bcmp(dp->d_name, SUJ_FILE, dp->d_namlen) != 0)
continue;
return (dp->d_ino);
}
return (0);
}
/*
* Search in the UFS_ROOTINO for the SUJ_FILE. If it exists we can not enable
* journaling.
*/
static ino_t
journal_findfile(void)
{
union dinodep dp;
ino_t ino;
int i;
if (getinode(&disk, &dp, UFS_ROOTINO) != 0) {
warn("Failed to get root inode: %s", disk.d_error);
return (-1);
}
if (sblock.fs_magic == FS_UFS1_MAGIC) {
if ((off_t)dp.dp1->di_size >= lblktosize(&sblock, UFS_NDADDR)) {
warnx("UFS_ROOTINO extends beyond direct blocks.");
return (-1);
}
for (i = 0; i < UFS_NDADDR; i++) {
if (dp.dp1->di_db[i] == 0)
break;
if ((ino = dir_search(dp.dp1->di_db[i],
sblksize(&sblock, (off_t)dp.dp1->di_size, i))) != 0)
return (ino);
}
} else {
if ((off_t)dp.dp2->di_size >= lblktosize(&sblock, UFS_NDADDR)) {
warnx("UFS_ROOTINO extends beyond direct blocks.");
return (-1);
}
for (i = 0; i < UFS_NDADDR; i++) {
if (dp.dp2->di_db[i] == 0)
break;
if ((ino = dir_search(dp.dp2->di_db[i],
sblksize(&sblock, (off_t)dp.dp2->di_size, i))) != 0)
return (ino);
}
}
return (0);
}
static void
dir_clear_block(const char *block, off_t off)
{
struct direct *dp;
for (; off < sblock.fs_bsize; off += DIRBLKSIZ) {
dp = (struct direct *)&block[off];
dp->d_ino = 0;
dp->d_reclen = DIRBLKSIZ;
dp->d_type = DT_UNKNOWN;
}
}
/*
* Insert the journal at inode 'ino' into directory blk 'blk' at the first
* free offset of 'off'. DIRBLKSIZ blocks after off are initialized as
* empty.
*/
static int
dir_insert(ufs2_daddr_t blk, off_t off, ino_t ino)
{
struct direct *dp;
char block[MAXBSIZE];
if (bread(&disk, fsbtodb(&sblock, blk), block, sblock.fs_bsize) <= 0) {
warn("Failed to read dir block");
return (-1);
}
bzero(&block[off], sblock.fs_bsize - off);
dp = (struct direct *)&block[off];
dp->d_ino = ino;
dp->d_reclen = DIRBLKSIZ;
dp->d_type = DT_REG;
dp->d_namlen = strlen(SUJ_FILE);
bcopy(SUJ_FILE, &dp->d_name, strlen(SUJ_FILE));
dir_clear_block(block, off + DIRBLKSIZ);
if (bwrite(&disk, fsbtodb(&sblock, blk), block, sblock.fs_bsize) <= 0) {
warn("Failed to write dir block");
return (-1);
}
return (0);
}
/*
* Extend a directory block in 'blk' by copying it to a full size block
* and inserting the new journal inode into .sujournal.
*/
static int
dir_extend(ufs2_daddr_t blk, ufs2_daddr_t nblk, off_t size, ino_t ino)
{
char block[MAXBSIZE];
if (bread(&disk, fsbtodb(&sblock, blk), block,
roundup(size, sblock.fs_fsize)) <= 0) {
warn("Failed to read dir block");
return (-1);
}
dir_clear_block(block, size);
if (bwrite(&disk, fsbtodb(&sblock, nblk), block, sblock.fs_bsize)
<= 0) {
warn("Failed to write dir block");
return (-1);
}
return (dir_insert(nblk, size, ino));
}
/*
* Insert the journal file into the UFS_ROOTINO directory. We always extend the
* last frag
*/
static int
journal_insertfile(ino_t ino)
{
union dinodep dp;
ufs2_daddr_t nblk;
ufs2_daddr_t blk;
ufs_lbn_t lbn;
int size;
int off;
if (getinode(&disk, &dp, UFS_ROOTINO) != 0) {
warn("Failed to get root inode: %s", disk.d_error);
sbdirty();
return (-1);
}
blk = 0;
size = 0;
nblk = journal_balloc();
if (nblk <= 0)
return (-1);
/*
* For simplicity sake we aways extend the UFS_ROOTINO into a new
* directory block rather than searching for space and inserting
* into an existing block. However, if the rootino has frags
* have to free them and extend the block.
*/
if (sblock.fs_magic == FS_UFS1_MAGIC) {
lbn = lblkno(&sblock, dp.dp1->di_size);
off = blkoff(&sblock, dp.dp1->di_size);
blk = dp.dp1->di_db[lbn];
size = sblksize(&sblock, (off_t)dp.dp1->di_size, lbn);
} else {
lbn = lblkno(&sblock, dp.dp2->di_size);
off = blkoff(&sblock, dp.dp2->di_size);
blk = dp.dp2->di_db[lbn];
size = sblksize(&sblock, (off_t)dp.dp2->di_size, lbn);
}
if (off != 0) {
if (dir_extend(blk, nblk, off, ino) == -1)
return (-1);
} else {
blk = 0;
if (dir_insert(nblk, 0, ino) == -1)
return (-1);
}
if (sblock.fs_magic == FS_UFS1_MAGIC) {
dp.dp1->di_blocks += (sblock.fs_bsize - size) / DEV_BSIZE;
dp.dp1->di_db[lbn] = nblk;
dp.dp1->di_size = lblktosize(&sblock, lbn+1);
} else {
dp.dp2->di_blocks += (sblock.fs_bsize - size) / DEV_BSIZE;
dp.dp2->di_db[lbn] = nblk;
dp.dp2->di_size = lblktosize(&sblock, lbn+1);
}
if (putinode(&disk) < 0) {
warn("Failed to write root inode: %s", disk.d_error);
return (-1);
}
if (cgwrite(&disk) < 0) {
warn("Failed to write updated cg");
sbdirty();
return (-1);
}
if (blk) {
if (cgbfree(&disk, blk, size) < 0) {
warn("Failed to write cg");
return (-1);
}
}
return (0);
}
static int
indir_fill(ufs2_daddr_t blk, int level, int *resid)
{
char indirbuf[MAXBSIZE];
ufs1_daddr_t *bap1;
ufs2_daddr_t *bap2;
ufs2_daddr_t nblk;
int ncnt;
int cnt;
int i;
bzero(indirbuf, sizeof(indirbuf));
bap1 = (ufs1_daddr_t *)indirbuf;
bap2 = (void *)bap1;
cnt = 0;
for (i = 0; i < NINDIR(&sblock) && *resid != 0; i++) {
nblk = journal_balloc();
if (nblk <= 0)
return (-1);
cnt++;
if (sblock.fs_magic == FS_UFS1_MAGIC)
*bap1++ = nblk;
else
*bap2++ = nblk;
if (level != 0) {
ncnt = indir_fill(nblk, level - 1, resid);
if (ncnt <= 0)
return (-1);
cnt += ncnt;
} else
(*resid)--;
}
if (bwrite(&disk, fsbtodb(&sblock, blk), indirbuf,
sblock.fs_bsize) <= 0) {
warn("Failed to write indirect");
return (-1);
}
return (cnt);
}
/*
* Clear the flag bits so the journal can be removed.
*/
static void
journal_clear(void)
{
union dinodep dp;
ino_t ino;
ino = journal_findfile();
if (ino == (ino_t)-1 || ino == 0) {
warnx("Journal file does not exist");
return;
}
printf("Clearing journal flags from inode %ju\n", (uintmax_t)ino);
if (getinode(&disk, &dp, ino) != 0) {
warn("Failed to get journal inode: %s", disk.d_error);
return;
}
if (sblock.fs_magic == FS_UFS1_MAGIC)
dp.dp1->di_flags = 0;
else
dp.dp2->di_flags = 0;
if (putinode(&disk) < 0) {
warn("Failed to write journal inode: %s", disk.d_error);
return;
}
}
static int
journal_alloc(int64_t size)
{
union dinodep dp;
ufs2_daddr_t blk;
struct cg *cgp;
int resid;
ino_t ino;
int blks;
time_t utime;
int i;
cgp = &disk.d_cg;
ino = 0;
/*
* If the journal file exists we can't allocate it.
*/
ino = journal_findfile();
if (ino == (ino_t)-1) {
warnx("journal_findfile() failed.");
return (-1);
}
if (ino > 0) {
warnx("Journal file %s already exists, please remove.",
SUJ_FILE);
return (-1);
}
/*
* If the user didn't supply a size pick one based on the filesystem
* size constrained with hardcoded MIN and MAX values. We opt for
* 1/1024th of the filesystem up to MAX but not exceeding one CG and
* not less than the MIN.
*/
if (size == 0) {
size = (sblock.fs_size * sblock.fs_bsize) / 1024;
if (size / sblock.fs_fsize > sblock.fs_fpg)
size = sblock.fs_fpg * sblock.fs_fsize;
size = MAX(SUJ_MIN, size);
}
/* fsck does not support fragments in journal files. */
size = roundup(size, sblock.fs_bsize);
resid = blocks = size / sblock.fs_bsize;
if (sblock.fs_cstotal.cs_nbfree < blocks) {
warn("Insufficient free space for %jd byte journal", size);
return (-1);
}
/*
* Find a cg with enough blocks to satisfy the journal
* size. Presently the journal does not span cgs.
*/
while (cgread(&disk) == 1) {
if (cgp->cg_cs.cs_nifree == 0)
continue;
ino = cgialloc(&disk);
if (ino <= 0)
break;
printf("Using inode %ju in cg %d for %jd byte journal\n",
(uintmax_t)ino, cgp->cg_cgx, size);
if (getinode(&disk, &dp, ino) != 0) {
warn("Failed to get allocated inode: %s", disk.d_error);
sbdirty();
goto out;
}
/*
* We leave fields unrelated to the number of allocated
* blocks and size uninitialized. This causes legacy
* fsck implementations to clear the inode.
*/
time(&utime);
if (sblock.fs_magic == FS_UFS1_MAGIC) {
bzero(dp.dp1, sizeof(*dp.dp1));
dp.dp1->di_size = size;
dp.dp1->di_mode = IFREG | IREAD;
dp.dp1->di_nlink = 1;
dp.dp1->di_flags =
SF_IMMUTABLE | SF_NOUNLINK | UF_NODUMP;
dp.dp1->di_atime = utime;
dp.dp1->di_mtime = utime;
dp.dp1->di_ctime = utime;
} else {
bzero(dp.dp2, sizeof(*dp.dp2));
dp.dp2->di_size = size;
dp.dp2->di_mode = IFREG | IREAD;
dp.dp2->di_nlink = 1;
dp.dp2->di_flags =
SF_IMMUTABLE | SF_NOUNLINK | UF_NODUMP;
dp.dp2->di_atime = utime;
dp.dp2->di_mtime = utime;
dp.dp2->di_ctime = utime;
dp.dp2->di_birthtime = utime;
}
for (i = 0; i < UFS_NDADDR && resid; i++, resid--) {
blk = journal_balloc();
if (blk <= 0)
goto out;
if (sblock.fs_magic == FS_UFS1_MAGIC) {
dp.dp1->di_db[i] = blk;
dp.dp1->di_blocks++;
} else {
dp.dp2->di_db[i] = blk;
dp.dp2->di_blocks++;
}
}
for (i = 0; i < UFS_NIADDR && resid; i++) {
blk = journal_balloc();
if (blk <= 0)
goto out;
blks = indir_fill(blk, i, &resid) + 1;
if (blks <= 0) {
sbdirty();
goto out;
}
if (sblock.fs_magic == FS_UFS1_MAGIC) {
dp.dp1->di_ib[i] = blk;
dp.dp1->di_blocks += blks;
} else {
dp.dp2->di_ib[i] = blk;
dp.dp2->di_blocks += blks;
}
}
if (sblock.fs_magic == FS_UFS1_MAGIC)
dp.dp1->di_blocks *= sblock.fs_bsize / disk.d_bsize;
else
dp.dp2->di_blocks *= sblock.fs_bsize / disk.d_bsize;
if (putinode(&disk) < 0) {
warn("Failed to write allocated inode: %s",
disk.d_error);
sbdirty();
return (-1);
}
if (cgwrite(&disk) < 0) {
warn("Failed to write updated cg");
sbdirty();
return (-1);
}
if (journal_insertfile(ino) < 0) {
sbdirty();
return (-1);
}
sblock.fs_sujfree = 0;
return (0);
}
warnx("Insufficient free space for the journal.");
out:
return (-1);
}
static void
usage(void)
{
fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n",
"usage: tunefs [-A] [-a enable | disable] [-e maxbpg] [-f avgfilesize]",
" [-J enable | disable] [-j enable | disable] [-k metaspace]",
" [-L volname] [-l enable | disable] [-m minfree]",
" [-N enable | disable] [-n enable | disable]",
" [-o space | time] [-p] [-s avgfpdir] [-t enable | disable]",
" special | filesystem");
exit(2);
}
static void
printfs(void)
{
warnx("POSIX.1e ACLs: (-a) %s",
(sblock.fs_flags & FS_ACLS)? "enabled" : "disabled");
warnx("NFSv4 ACLs: (-N) %s",
(sblock.fs_flags & FS_NFS4ACLS)? "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("soft update journaling: (-j) %s",
(sblock.fs_flags & FS_SUJ)? "enabled" : "disabled");
warnx("gjournal: (-J) %s",
(sblock.fs_flags & FS_GJOURNAL)? "enabled" : "disabled");
warnx("trim: (-t) %s",
(sblock.fs_flags & FS_TRIM)? "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("space to hold for metadata blocks: (-k) %jd",
sblock.fs_metaspace);
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);
warnx("volume label: (-L) %s",
sblock.fs_volname);
}
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