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freebsd-skq/sbin/tunefs/tunefs.c
Xin LI 1b83e8a3f8 Constify string pointers. 
Verified with:	sha256(1)
MFC after:	2 weeks
2013-05-16 21:04:56 +00:00

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/*
* 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.
* 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.
*/
#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/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 <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, *on;
const char *name;
int active;
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];
struct ufs_args args;
struct statfs stfs;
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;
active = 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 = 1;
Aflag++;
break;
case 'a':
found_arg = 1;
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 = 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 'j':
found_arg = 1;
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 = 1;
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 = 1;
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 = 1;
name = "volume label";
Lvalue = optarg;
i = -1;
while (isalnum(Lvalue[++i]));
if (Lvalue[i] != '\0') {
errx(10,
"bad %s. Valid characters are alphanumerics.",
name);
}
if (strlen(Lvalue) >= MAXVOLLEN) {
errx(10, "bad %s. Length is longer than %d.",
name, MAXVOLLEN - 1);
}
Lflag = 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 = "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 = 1;
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 = 1;
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 = 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;
case 'S':
found_arg = 1;
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 = 1;
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();
on = special = argv[0];
if (ufs_disk_fillout(&disk, special) == -1)
goto err;
if (disk.d_name != special) {
if (statfs(special, &stfs) != 0)
warn("Can't stat %s", special);
if (strcmp(special, stfs.f_mntonname) == 0)
active = 1;
}
if (pflag) {
printfs();
exit(0);
}
if (Lflag) {
name = "volume label";
strlcpy(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 can not 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;
ufs_disk_close(&disk);
if (active) {
bzero(&args, sizeof(args));
if (mount("ufs", on,
stfs.f_flags | MNT_UPDATE | MNT_RELOAD, &args) < 0)
err(9, "%s: reload", special);
warnx("file system reloaded");
}
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 ROOTINO for the SUJ_FILE. If it exists we can not enable
* journaling.
*/
static ino_t
journal_findfile(void)
{
struct ufs1_dinode *dp1;
struct ufs2_dinode *dp2;
ino_t ino;
int mode;
void *ip;
int i;
if (getino(&disk, &ip, ROOTINO, &mode) != 0) {
warn("Failed to get root inode");
return (-1);
}
dp2 = ip;
dp1 = ip;
if (sblock.fs_magic == FS_UFS1_MAGIC) {
if ((off_t)dp1->di_size >= lblktosize(&sblock, NDADDR)) {
warnx("ROOTINO extends beyond direct blocks.");
return (-1);
}
for (i = 0; i < NDADDR; i++) {
if (dp1->di_db[i] == 0)
break;
if ((ino = dir_search(dp1->di_db[i],
sblksize(&sblock, (off_t)dp1->di_size, i))) != 0)
return (ino);
}
} else {
if ((off_t)dp2->di_size >= lblktosize(&sblock, NDADDR)) {
warnx("ROOTINO extends beyond direct blocks.");
return (-1);
}
for (i = 0; i < NDADDR; i++) {
if (dp2->di_db[i] == 0)
break;
if ((ino = dir_search(dp2->di_db[i],
sblksize(&sblock, (off_t)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 ROOTINO directory. We always extend the
* last frag
*/
static int
journal_insertfile(ino_t ino)
{
struct ufs1_dinode *dp1;
struct ufs2_dinode *dp2;
void *ip;
ufs2_daddr_t nblk;
ufs2_daddr_t blk;
ufs_lbn_t lbn;
int size;
int mode;
int off;
if (getino(&disk, &ip, ROOTINO, &mode) != 0) {
warn("Failed to get root inode");
sbdirty();
return (-1);
}
dp2 = ip;
dp1 = ip;
blk = 0;
size = 0;
nblk = journal_balloc();
if (nblk <= 0)
return (-1);
/*
* For simplicity sake we aways extend the 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, dp1->di_size);
off = blkoff(&sblock, dp1->di_size);
blk = dp1->di_db[lbn];
size = sblksize(&sblock, (off_t)dp1->di_size, lbn);
} else {
lbn = lblkno(&sblock, dp2->di_size);
off = blkoff(&sblock, dp2->di_size);
blk = dp2->di_db[lbn];
size = sblksize(&sblock, (off_t)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) {
dp1->di_blocks += (sblock.fs_bsize - size) / DEV_BSIZE;
dp1->di_db[lbn] = nblk;
dp1->di_size = lblktosize(&sblock, lbn+1);
} else {
dp2->di_blocks += (sblock.fs_bsize - size) / DEV_BSIZE;
dp2->di_db[lbn] = nblk;
dp2->di_size = lblktosize(&sblock, lbn+1);
}
if (putino(&disk) < 0) {
warn("Failed to write root inode");
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)
{
struct ufs1_dinode *dp1;
struct ufs2_dinode *dp2;
ino_t ino;
int mode;
void *ip;
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 (getino(&disk, &ip, ino, &mode) != 0) {
warn("Failed to get journal inode");
return;
}
dp2 = ip;
dp1 = ip;
if (sblock.fs_magic == FS_UFS1_MAGIC)
dp1->di_flags = 0;
else
dp2->di_flags = 0;
if (putino(&disk) < 0) {
warn("Failed to write journal inode");
return;
}
}
static int
journal_alloc(int64_t size)
{
struct ufs1_dinode *dp1;
struct ufs2_dinode *dp2;
ufs2_daddr_t blk;
void *ip;
struct cg *cgp;
int resid;
ino_t ino;
int blks;
int mode;
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)
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;
size = MIN(SUJ_MAX, size);
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 (getino(&disk, &ip, ino, &mode) != 0) {
warn("Failed to get allocated inode");
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.
*/
dp2 = ip;
dp1 = ip;
time(&utime);
if (sblock.fs_magic == FS_UFS1_MAGIC) {
bzero(dp1, sizeof(*dp1));
dp1->di_size = size;
dp1->di_mode = IFREG | IREAD;
dp1->di_nlink = 1;
dp1->di_flags = SF_IMMUTABLE | SF_NOUNLINK | UF_NODUMP;
dp1->di_atime = utime;
dp1->di_mtime = utime;
dp1->di_ctime = utime;
} else {
bzero(dp2, sizeof(*dp2));
dp2->di_size = size;
dp2->di_mode = IFREG | IREAD;
dp2->di_nlink = 1;
dp2->di_flags = SF_IMMUTABLE | SF_NOUNLINK | UF_NODUMP;
dp2->di_atime = utime;
dp2->di_mtime = utime;
dp2->di_ctime = utime;
dp2->di_birthtime = utime;
}
for (i = 0; i < NDADDR && resid; i++, resid--) {
blk = journal_balloc();
if (blk <= 0)
goto out;
if (sblock.fs_magic == FS_UFS1_MAGIC) {
dp1->di_db[i] = blk;
dp1->di_blocks++;
} else {
dp2->di_db[i] = blk;
dp2->di_blocks++;
}
}
for (i = 0; i < 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) {
dp1->di_ib[i] = blk;
dp1->di_blocks += blks;
} else {
dp2->di_ib[i] = blk;
dp2->di_blocks += blks;
}
}
if (sblock.fs_magic == FS_UFS1_MAGIC)
dp1->di_blocks *= sblock.fs_bsize / disk.d_bsize;
else
dp2->di_blocks *= sblock.fs_bsize / disk.d_bsize;
if (putino(&disk) < 0) {
warn("Failed to write inode");
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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