static void
sblock_init(void)
{
fsmodified = 0;
if (errorlocked)
isdirty = 1;
lfdir = 0;
initbarea(&sblk);
initbarea(&asblk);
/*
* May have buffer left over from previous filesystem check.
*/
if (sblk.b_un.b_buf == NULL)
sblk.b_un.b_buf = calloc(1, SBSIZE);
if (asblk.b_un.b_buf == NULL)
asblk.b_un.b_buf = calloc(1, SBSIZE);
if (sblk.b_un.b_buf == NULL || asblk.b_un.b_buf == NULL)
errexit("cannot allocate space for superblock\n");
/*
* Could get the actual sector size from the device here,
* but considering how much would need to change in the rest
* of the system before it'd be a problem for us, it's not
* worth worrying about right now.
*/
dev_bsize = secsize = DEV_BSIZE;
}
/*
* Malloc buffers and set up cache.
*/
void
bufinit(void)
{
struct bufarea *bp;
long bufcnt, i;
char *bufp;
pbp = pdirbp = NULL;
bufp = malloc((unsigned int)sblock.fs_bsize);
if (bufp == NULL)
errx(EEXIT, "cannot allocate buffer pool");
cgblk.b_un.b_buf = bufp;
initbarea(&cgblk);
bufhead.b_next = bufhead.b_prev = &bufhead;
bufcnt = MAXBUFSPACE / sblock.fs_bsize;
if (bufcnt < MINBUFS)
bufcnt = MINBUFS;
for (i = 0; i < bufcnt; i++) {
bp = (struct bufarea *)malloc(sizeof(struct bufarea));
bufp = malloc((unsigned int)sblock.fs_bsize);
if (bp == NULL || bufp == NULL) {
if (i >= MINBUFS)
break;
errx(EEXIT, "cannot allocate buffer pool");
}
bp->b_un.b_buf = bufp;
bp->b_prev = &bufhead;
bp->b_next = bufhead.b_next;
bufhead.b_next->b_prev = bp;
bufhead.b_next = bp;
initbarea(bp);
}
bufhead.b_size = i; /* save number of buffers */
}
void
sblock_init(void)
{
fswritefd = -1;
fsmodified = 0;
lfdir = 0;
initbarea(&sblk, BT_SUPERBLK);
initbarea(&asblk, BT_SUPERBLK);
sblk.b_un.b_buf = Malloc(SBLOCKSIZE);
asblk.b_un.b_buf = Malloc(SBLOCKSIZE);
if (sblk.b_un.b_buf == NULL || asblk.b_un.b_buf == NULL)
errx(EEXIT, "cannot allocate space for superblock");
dev_bsize = secsize = DEV_BSIZE;
}
void
setinodebuf(ino_t inum)
{
if (inum % sblock.fs_ipg != 0)
errx(EEXIT, "bad inode number %ju to setinodebuf",
(uintmax_t)inum);
lastvalidinum = inum + sblock.fs_ipg - 1;
startinum = 0;
nextino = inum;
lastinum = inum;
readcount = 0;
if (inobuf.b_un.b_buf != NULL)
return;
inobufsize = blkroundup(&sblock, INOBUFSIZE);
fullcnt = inobufsize / ((sblock.fs_magic == FS_UFS1_MAGIC) ?
sizeof(struct ufs1_dinode) : sizeof(struct ufs2_dinode));
readpercg = sblock.fs_ipg / fullcnt;
partialcnt = sblock.fs_ipg % fullcnt;
partialsize = partialcnt * ((sblock.fs_magic == FS_UFS1_MAGIC) ?
sizeof(struct ufs1_dinode) : sizeof(struct ufs2_dinode));
if (partialcnt != 0) {
readpercg++;
} else {
partialcnt = fullcnt;
partialsize = inobufsize;
}
initbarea(&inobuf, BT_INODES);
if ((inobuf.b_un.b_buf = Malloc((unsigned)inobufsize)) == NULL)
errx(EEXIT, "cannot allocate space for inode buffer");
}
/*
* Malloc buffers and set up cache.
*/
void
bufinit()
{
register struct bufarea *bp;
long bufcnt, i;
char *bufp;
bufp = malloc((unsigned int)fsbsize);
if (bufp == 0)
errexit(gettext("cannot allocate buffer pool\n"));
bufhead.b_next = bufhead.b_prev = &bufhead;
bufcnt = MAXBUFSPACE / fsbsize;
if (bufcnt < MINBUFS)
bufcnt = MINBUFS;
for (i = 0; i < bufcnt; i++) {
bp = (struct bufarea *)malloc(sizeof (struct bufarea));
bufp = malloc((unsigned int)fsbsize);
if (bp == NULL || bufp == NULL) {
if (i >= MINBUFS)
break;
errexit(gettext("cannot allocate buffer pool\n"));
}
bp->b_un.b_buf = bufp;
bp->b_prev = &bufhead;
bp->b_next = bufhead.b_next;
bufhead.b_next->b_prev = bp;
bufhead.b_next = bp;
initbarea(bp);
}
bufhead.b_size = i; /* save number of buffers */
pbp = pdirbp = NULL;
}
void
sblock_init(void)
{
struct disklabel *lp;
fswritefd = -1;
fsmodified = 0;
lfdir = 0;
initbarea(&sblk, BT_SUPERBLK);
initbarea(&asblk, BT_SUPERBLK);
sblk.b_un.b_buf = malloc(SBLOCKSIZE);
asblk.b_un.b_buf = malloc(SBLOCKSIZE);
if (sblk.b_un.b_buf == NULL || asblk.b_un.b_buf == NULL)
errx(EEXIT, "cannot allocate space for superblock");
if ((lp = getdisklabel(NULL, fsreadfd)))
real_dev_bsize = dev_bsize = secsize = lp->d_secsize;
else
dev_bsize = secsize = DEV_BSIZE;
}
/*
* Recursively print a list of indirect blocks.
*/
static void
printindir(ufs2_daddr_t blk, int level, char *bufp)
{
struct bufarea buf, *bp;
char tempbuf[32]; /* enough to print an ufs2_daddr_t */
int i, j, cpl, charssofar;
ufs2_daddr_t blkno;
if (blk == 0)
return;
printf("%jd (%d) =>\n", (intmax_t)blk, level);
if (level == 0) {
/* for the final indirect level, don't use the cache */
bp = &buf;
bp->b_un.b_buf = bufp;
bp->b_prev = bp->b_next = bp;
initbarea(bp);
getblk(bp, blk, sblock.fs_bsize);
} else
bp = getdatablk(blk, sblock.fs_bsize);
cpl = charsperline();
for (i = charssofar = 0; i < NINDIR(&sblock); i++) {
if (sblock.fs_magic == FS_UFS1_MAGIC)
blkno = bp->b_un.b_indir1[i];
else
blkno = bp->b_un.b_indir2[i];
if (blkno == 0)
continue;
j = sprintf(tempbuf, "%jd", (intmax_t)blkno);
if (level == 0) {
charssofar += j;
if (charssofar >= cpl - 2) {
putchar('\n');
charssofar = j;
}
}
fputs(tempbuf, stdout);
if (level == 0) {
printf(", ");
charssofar += 2;
} else {
printf(" =>\n");
printindir(blkno, level - 1, bufp);
printf("\n");
charssofar = 0;
}
}
if (level == 0)
putchar('\n');
return;
}
/*
* Recursively print a list of indirect blocks.
*/
static int
printindir(ufs_daddr_t blk, int level, char *bufp)
{
struct bufarea buf, *bp;
char tempbuf[32]; /* enough to print an ufs_daddr_t */
int i, j, cpl, charssofar;
ufs_daddr_t blkno;
if (level == 0) {
/* for the final indirect level, don't use the cache */
bp = &buf;
bp->b_un.b_buf = bufp;
bp->b_prev = bp->b_next = bp;
initbarea(bp);
getblk(bp, blk, sblock.fs_bsize);
} else
bp = getdatablk(blk, sblock.fs_bsize);
cpl = charsperline();
for (i = charssofar = 0; i < NINDIR(&sblock); i++) {
blkno = bp->b_un.b_indir[i];
if (blkno == 0) {
if (level == 0)
putchar('\n');
return 0;
}
j = sprintf(tempbuf, "%d", blkno);
if (level == 0) {
charssofar += j;
if (charssofar >= cpl - 2) {
putchar('\n');
charssofar = j;
}
}
fputs(tempbuf, stdout);
if (level == 0) {
printf(", ");
charssofar += 2;
} else {
printf(" =>\n");
if (printindir(blkno, level - 1, bufp) == 0)
return 0;
}
}
if (level == 0)
putchar('\n');
return 1;
}
int
setup(char *dev)
{
long cg, size, asked, i, j, bmapsize;
struct disklabel *lp;
off_t sizepb;
struct stat statb;
struct fs proto;
int doskipclean;
int32_t maxsymlinklen, nindir, inopb;
u_int64_t maxfilesize;
char *realdev;
havesb = 0;
fswritefd = fsreadfd = -1;
doskipclean = skipclean;
if ((fsreadfd = opendev(dev, O_RDONLY, 0, &realdev)) < 0) {
printf("Can't open %s: %s\n", dev, strerror(errno));
return (0);
}
if (strncmp(dev, realdev, PATH_MAX) != 0) {
blockcheck(unrawname(realdev));
strlcpy(rdevname, realdev, sizeof(rdevname));
setcdevname(rdevname, dev, preen);
}
if (fstat(fsreadfd, &statb) < 0) {
printf("Can't stat %s: %s\n", realdev, strerror(errno));
close(fsreadfd);
return (0);
}
if (!S_ISCHR(statb.st_mode)) {
pfatal("%s is not a character device", realdev);
if (reply("CONTINUE") == 0) {
close(fsreadfd);
return (0);
}
}
if (preen == 0) {
printf("** %s", realdev);
if (strncmp(dev, realdev, PATH_MAX) != 0)
printf(" (%s)", dev);
}
if (nflag || (fswritefd = opendev(dev, O_WRONLY, 0, NULL)) < 0) {
fswritefd = -1;
if (preen)
pfatal("NO WRITE ACCESS");
printf(" (NO WRITE)");
}
if (preen == 0)
printf("\n");
fsmodified = 0;
lfdir = 0;
initbarea(&sblk);
initbarea(&asblk);
sblk.b_un.b_buf = malloc(SBSIZE);
asblk.b_un.b_buf = malloc(SBSIZE);
if (sblk.b_un.b_buf == NULL || asblk.b_un.b_buf == NULL)
errexit("cannot allocate space for superblock\n");
if ((lp = getdisklabel(NULL, fsreadfd)) != NULL)
dev_bsize = secsize = lp->d_secsize;
else
dev_bsize = secsize = DEV_BSIZE;
/*
* Read in the superblock, looking for alternates if necessary
*/
if (readsb(1) == 0) {
if (bflag || preen || calcsb(realdev, fsreadfd, &proto) == 0)
return(0);
if (reply("LOOK FOR ALTERNATE SUPERBLOCKS") == 0)
return (0);
for (i = 0; i < sizeof(altsbtry) / sizeof(altsbtry[0]); i++) {
bflag = altsbtry[i];
/* proto partially setup by calcsb */
if (readsb(0) != 0 &&
proto.fs_fsize == sblock.fs_fsize &&
proto.fs_bsize == sblock.fs_bsize)
goto found;
}
for (cg = 0; cg < proto.fs_ncg; cg++) {
bflag = fsbtodb(&proto, cgsblock(&proto, cg));
if (readsb(0) != 0)
break;
}
if (cg >= proto.fs_ncg) {
printf("%s %s\n%s %s\n%s %s\n",
"SEARCH FOR ALTERNATE SUPER-BLOCK",
"FAILED. YOU MUST USE THE",
"-b OPTION TO FSCK_FFS TO SPECIFY THE",
"LOCATION OF AN ALTERNATE",
"SUPER-BLOCK TO SUPPLY NEEDED",
"INFORMATION; SEE fsck_ffs(8).");
return(0);
}
found:
doskipclean = 0;
pwarn("USING ALTERNATE SUPERBLOCK AT %d\n", bflag);
}
if (debug)
printf("clean = %d\n", sblock.fs_clean);
if (sblock.fs_clean & FS_ISCLEAN) {
if (doskipclean) {
pwarn("%sile system is clean; not checking\n",
preen ? "f" : "** F");
return (-1);
}
if (!preen)
pwarn("** File system is already clean\n");
}
maxfsblock = sblock.fs_size;
maxino = sblock.fs_ncg * sblock.fs_ipg;
sizepb = sblock.fs_bsize;
maxfilesize = sblock.fs_bsize * NDADDR - 1;
for (i = 0; i < NIADDR; i++) {
sizepb *= NINDIR(&sblock);
maxfilesize += sizepb;
}
/*
* Check and potentially fix certain fields in the super block.
*/
if (sblock.fs_optim != FS_OPTTIME && sblock.fs_optim != FS_OPTSPACE) {
pfatal("UNDEFINED OPTIMIZATION IN SUPERBLOCK");
if (reply("SET TO DEFAULT") == 1) {
sblock.fs_optim = FS_OPTTIME;
sbdirty();
}
}
if ((sblock.fs_minfree < 0 || sblock.fs_minfree > 99)) {
pfatal("IMPOSSIBLE MINFREE=%d IN SUPERBLOCK",
sblock.fs_minfree);
if (reply("SET TO DEFAULT") == 1) {
sblock.fs_minfree = 10;
sbdirty();
}
}
if (sblock.fs_npsect < sblock.fs_nsect ||
sblock.fs_npsect > sblock.fs_nsect*2) {
pwarn("IMPOSSIBLE NPSECT=%d IN SUPERBLOCK",
sblock.fs_npsect);
sblock.fs_npsect = sblock.fs_nsect;
if (preen)
printf(" (FIXED)\n");
if (preen || reply("SET TO DEFAULT") == 1) {
sbdirty();
dirty(&asblk);
}
}
if (sblock.fs_bmask != ~(sblock.fs_bsize - 1)) {
pwarn("INCORRECT BMASK=%x IN SUPERBLOCK",
sblock.fs_bmask);
sblock.fs_bmask = ~(sblock.fs_bsize - 1);
if (preen)
printf(" (FIXED)\n");
if (preen || reply("FIX") == 1) {
sbdirty();
dirty(&asblk);
}
}
if (sblock.fs_fmask != ~(sblock.fs_fsize - 1)) {
pwarn("INCORRECT FMASK=%x IN SUPERBLOCK",
sblock.fs_fmask);
sblock.fs_fmask = ~(sblock.fs_fsize - 1);
if (preen)
printf(" (FIXED)\n");
if (preen || reply("FIX") == 1) {
sbdirty();
dirty(&asblk);
}
}
if (1 << sblock.fs_bshift != sblock.fs_bsize) {
pwarn("INCORRECT BSHIFT=%d IN SUPERBLOCK", sblock.fs_bshift);
sblock.fs_bshift = ffs(sblock.fs_bsize) - 1;
if (preen)
printf(" (FIXED)\n");
if (preen || reply("FIX") == 1) {
sbdirty();
dirty(&asblk);
}
}
if (1 << sblock.fs_fshift != sblock.fs_fsize) {
pwarn("INCORRECT FSHIFT=%d IN SUPERBLOCK", sblock.fs_fshift);
sblock.fs_fshift = ffs(sblock.fs_fsize) - 1;
if (preen)
printf(" (FIXED)\n");
if (preen || reply("FIX") == 1) {
sbdirty();
dirty(&asblk);
}
}
if (sblock.fs_inodefmt < FS_44INODEFMT) {
pwarn("Format of filesystem is too old.\n");
pwarn("Must update to modern format using a version of fsck\n");
pfatal("from before release 5.0 with the command ``fsck -c 2''\n");
exit(8);
}
if (sblock.fs_maxfilesize != maxfilesize) {
pwarn("INCORRECT MAXFILESIZE=%llu IN SUPERBLOCK",
(unsigned long long)sblock.fs_maxfilesize);
sblock.fs_maxfilesize = maxfilesize;
if (preen)
printf(" (FIXED)\n");
if (preen || reply("FIX") == 1) {
sbdirty();
dirty(&asblk);
}
}
maxsymlinklen = sblock.fs_magic == FS_UFS1_MAGIC ?
MAXSYMLINKLEN_UFS1 : MAXSYMLINKLEN_UFS2;
if (sblock.fs_maxsymlinklen != maxsymlinklen) {
pwarn("INCORRECT MAXSYMLINKLEN=%d IN SUPERBLOCK",
sblock.fs_maxsymlinklen);
sblock.fs_maxsymlinklen = maxsymlinklen;
if (preen)
printf(" (FIXED)\n");
if (preen || reply("FIX") == 1) {
sbdirty();
dirty(&asblk);
}
}
if (sblock.fs_qbmask != ~sblock.fs_bmask) {
pwarn("INCORRECT QBMASK=%lx IN SUPERBLOCK",
(unsigned long)sblock.fs_qbmask);
sblock.fs_qbmask = ~sblock.fs_bmask;
if (preen)
printf(" (FIXED)\n");
if (preen || reply("FIX") == 1) {
sbdirty();
dirty(&asblk);
}
}
if (sblock.fs_qfmask != ~sblock.fs_fmask) {
pwarn("INCORRECT QFMASK=%lx IN SUPERBLOCK",
(unsigned long)sblock.fs_qfmask);
sblock.fs_qfmask = ~sblock.fs_fmask;
if (preen)
printf(" (FIXED)\n");
if (preen || reply("FIX") == 1) {
sbdirty();
dirty(&asblk);
}
}
if (sblock.fs_cgsize != fragroundup(&sblock, CGSIZE(&sblock))) {
pwarn("INCONSISTENT CGSIZE=%d\n", sblock.fs_cgsize);
sblock.fs_cgsize = fragroundup(&sblock, CGSIZE(&sblock));
if (preen)
printf(" (FIXED)\n");
if (preen || reply("FIX") == 1) {
sbdirty();
dirty(&asblk);
}
}
if (sblock.fs_magic == FS_UFS2_MAGIC)
inopb = sblock.fs_bsize / sizeof(struct ufs2_dinode);
else
inopb = sblock.fs_bsize / sizeof(struct ufs1_dinode);
if (INOPB(&sblock) != inopb) {
pwarn("INCONSISTENT INOPB=%d\n", INOPB(&sblock));
sblock.fs_inopb = inopb;
if (preen)
printf(" (FIXED)\n");
if (preen || reply("FIX") == 1) {
sbdirty();
dirty(&asblk);
}
}
if (sblock.fs_magic == FS_UFS2_MAGIC)
nindir = sblock.fs_bsize / sizeof(int64_t);
else
nindir = sblock.fs_bsize / sizeof(int32_t);
if (NINDIR(&sblock) != nindir) {
pwarn("INCONSISTENT NINDIR=%d\n", NINDIR(&sblock));
sblock.fs_nindir = nindir;
if (preen)
printf(" (FIXED)\n");
if (preen || reply("FIX") == 1) {
sbdirty();
dirty(&asblk);
}
}
if (asblk.b_dirty && !bflag) {
memcpy(&altsblock, &sblock, (size_t)sblock.fs_sbsize);
flush(fswritefd, &asblk);
}
/*
* read in the summary info.
*/
asked = 0;
sblock.fs_csp = calloc(1, sblock.fs_cssize);
if (sblock.fs_csp == NULL) {
printf("cannot alloc %u bytes for cylinder group summary area\n",
(unsigned)sblock.fs_cssize);
goto badsblabel;
}
for (i = 0, j = 0; i < sblock.fs_cssize; i += sblock.fs_bsize, j++) {
size = sblock.fs_cssize - i < sblock.fs_bsize ?
sblock.fs_cssize - i : sblock.fs_bsize;
if (bread(fsreadfd, (char *)sblock.fs_csp + i,
fsbtodb(&sblock, sblock.fs_csaddr + j * sblock.fs_frag),
size) != 0 && !asked) {
pfatal("BAD SUMMARY INFORMATION");
if (reply("CONTINUE") == 0) {
ckfini(0);
errexit("%s", "");
}
asked++;
}
}
/*
* allocate and initialize the necessary maps
*/
bmapsize = roundup(howmany(maxfsblock, NBBY), sizeof(int16_t));
blockmap = calloc((unsigned)bmapsize, sizeof(char));
if (blockmap == NULL) {
printf("cannot alloc %u bytes for blockmap\n",
(unsigned)bmapsize);
goto badsblabel;
}
inostathead = calloc((unsigned)(sblock.fs_ncg),
sizeof(struct inostatlist));
if (inostathead == NULL) {
printf("cannot alloc %u bytes for inostathead\n",
(unsigned)(sizeof(struct inostatlist) * (sblock.fs_ncg)));
goto badsblabel;
}
numdirs = MAX(sblock.fs_cstotal.cs_ndir, 128);
inplast = 0;
listmax = numdirs + 10;
inpsort = calloc((unsigned)listmax, sizeof(struct inoinfo *));
if (inpsort == NULL) {
printf("cannot alloc %zu bytes for inpsort\n",
(unsigned)listmax * sizeof(struct inoinfo *));
goto badsblabel;
}
inphead = calloc((unsigned)numdirs, sizeof(struct inoinfo *));
if (inphead == NULL) {
printf("cannot alloc %zu bytes for inphead\n",
(unsigned)numdirs * sizeof(struct inoinfo *));
goto badsblabel;
}
bufinit();
if (sblock.fs_flags & FS_DOSOFTDEP)
usedsoftdep = 1;
else
usedsoftdep = 0;
return (1);
badsblabel:
ckfini(0);
return (0);
}
/*
* Read in a superblock finding an alternate if necessary.
* Return 1 if successful, 0 if unsuccessful, -1 if filesystem
* is already clean (preen mode only).
*/
int
setup(char *dev)
{
long size, asked, i, j;
long skipclean, bmapsize;
off_t sizepb;
struct stat statb;
havesb = 0;
fswritefd = -1;
skipclean = fflag ? 0 : preen;
if (stat(dev, &statb) < 0) {
printf("Can't stat %s: %s\n", dev, strerror(errno));
return (0);
}
if ((statb.st_mode & S_IFMT) != S_IFCHR &&
(statb.st_mode & S_IFMT) != S_IFBLK) {
pfatal("%s is not a disk device", dev);
if (reply("CONTINUE") == 0)
return (0);
}
if ((fsreadfd = open(dev, O_RDONLY)) < 0) {
printf("Can't open %s: %s\n", dev, strerror(errno));
return (0);
}
if (preen == 0)
printf("** %s", dev);
if (nflag || (fswritefd = open(dev, O_WRONLY)) < 0) {
fswritefd = -1;
if (preen)
pfatal("NO WRITE ACCESS");
printf(" (NO WRITE)");
}
if (preen == 0)
printf("\n");
fsmodified = 0;
lfdir = 0;
initbarea(&sblk);
initbarea(&asblk);
sblk.b_un.b_buf = malloc(SBSIZE);
asblk.b_un.b_buf = malloc(SBSIZE);
if (sblk.b_un.b_buf == NULL || asblk.b_un.b_buf == NULL)
errx(EEXIT, "cannot allocate space for superblock");
/*
* Figure out the device block size and the sector size. The
* block size is updated by readsb() later on.
*/
{
struct partinfo pinfo;
if (ioctl(fsreadfd, DIOCGPART, &pinfo) == 0) {
dev_bsize = secsize = pinfo.media_blksize;
} else {
dev_bsize = secsize = DEV_BSIZE;
}
}
/*
* Read in the superblock, looking for alternates if necessary
*/
if (readsb(1) == 0) {
skipclean = 0;
if (bflag || preen)
return(0);
if (reply("LOOK FOR ALTERNATE SUPERBLOCKS") == 0)
return (0);
bflag = 32;
if (readsb(0) == 0) {
printf(
"YOU MUST USE THE -b OPTION TO FSCK TO SPECIFY\n"
"THE LOCATION OF AN ALTERNATE SUPER-BLOCK TO\n"
"SUPPLY NEEDED INFORMATION; SEE fsck(8).");
bflag = 0;
return(0);
}
pwarn("USING ALTERNATE SUPERBLOCK AT %d\n", bflag);
bflag = 0;
}
if (skipclean && sblock.fs_clean) {
pwarn("FILESYSTEM CLEAN; SKIPPING CHECKS\n");
return (-1);
}
maxfsblock = sblock.fs_size;
maxino = sblock.fs_ncg * sblock.fs_ipg;
/*
* Check and potentially fix certain fields in the super block.
*/
if (sblock.fs_optim != FS_OPTTIME && sblock.fs_optim != FS_OPTSPACE) {
pfatal("UNDEFINED OPTIMIZATION IN SUPERBLOCK");
if (reply("SET TO DEFAULT") == 1) {
sblock.fs_optim = FS_OPTTIME;
sbdirty();
}
}
if ((sblock.fs_minfree < 0 || sblock.fs_minfree > 99)) {
pfatal("IMPOSSIBLE MINFREE=%d IN SUPERBLOCK",
sblock.fs_minfree);
if (reply("SET TO DEFAULT") == 1) {
sblock.fs_minfree = 10;
sbdirty();
}
}
if (sblock.fs_interleave < 1 ||
sblock.fs_interleave > sblock.fs_nsect) {
pwarn("IMPOSSIBLE INTERLEAVE=%d IN SUPERBLOCK",
sblock.fs_interleave);
sblock.fs_interleave = 1;
if (preen)
printf(" (FIXED)\n");
if (preen || reply("SET TO DEFAULT") == 1) {
sbdirty();
dirty(&asblk);
}
}
if (sblock.fs_npsect < sblock.fs_nsect ||
sblock.fs_npsect > sblock.fs_nsect*2) {
pwarn("IMPOSSIBLE NPSECT=%d IN SUPERBLOCK",
sblock.fs_npsect);
sblock.fs_npsect = sblock.fs_nsect;
if (preen)
printf(" (FIXED)\n");
if (preen || reply("SET TO DEFAULT") == 1) {
sbdirty();
dirty(&asblk);
}
}
if (sblock.fs_inodefmt >= FS_44INODEFMT) {
newinofmt = 1;
} else {
sblock.fs_qbmask = ~sblock.fs_bmask;
sblock.fs_qfmask = ~sblock.fs_fmask;
/* This should match the kernel limit in ffs_oldfscompat(). */
sblock.fs_maxfilesize = (u_int64_t)1 << 39;
newinofmt = 0;
}
/*
* Convert to new inode format.
*/
if (cvtlevel >= 2 && sblock.fs_inodefmt < FS_44INODEFMT) {
if (preen)
pwarn("CONVERTING TO NEW INODE FORMAT\n");
else if (!reply("CONVERT TO NEW INODE FORMAT"))
return(0);
doinglevel2++;
sblock.fs_inodefmt = FS_44INODEFMT;
sizepb = sblock.fs_bsize;
sblock.fs_maxfilesize = sblock.fs_bsize * NDADDR - 1;
for (i = 0; i < NIADDR; i++) {
sizepb *= NINDIR(&sblock);
sblock.fs_maxfilesize += sizepb;
}
sblock.fs_maxsymlinklen = MAXSYMLINKLEN;
sblock.fs_qbmask = ~sblock.fs_bmask;
sblock.fs_qfmask = ~sblock.fs_fmask;
sbdirty();
dirty(&asblk);
}
/*
* Convert to new cylinder group format.
*/
if (cvtlevel >= 1 && sblock.fs_postblformat == FS_42POSTBLFMT) {
if (preen)
pwarn("CONVERTING TO NEW CYLINDER GROUP FORMAT\n");
else if (!reply("CONVERT TO NEW CYLINDER GROUP FORMAT"))
return(0);
doinglevel1++;
sblock.fs_postblformat = FS_DYNAMICPOSTBLFMT;
sblock.fs_nrpos = 8;
sblock.fs_postbloff =
(char *)(&sblock.fs_opostbl[0][0]) -
(char *)(&sblock.fs_firstfield);
sblock.fs_rotbloff = &sblock.fs_space[0] -
(u_char *)(&sblock.fs_firstfield);
sblock.fs_cgsize =
fragroundup(&sblock, CGSIZE(&sblock));
sbdirty();
dirty(&asblk);
}
if (asblk.b_dirty && !bflag) {
memmove(&altsblock, &sblock, (size_t)sblock.fs_sbsize);
flush(fswritefd, &asblk);
}
/*
* read in the summary info.
*/
asked = 0;
sblock.fs_csp = calloc(1, sblock.fs_cssize);
for (i = 0, j = 0; i < sblock.fs_cssize; i += sblock.fs_bsize, j++) {
size = sblock.fs_cssize - i < sblock.fs_bsize ?
sblock.fs_cssize - i : sblock.fs_bsize;
if (bread(fsreadfd, (char *)sblock.fs_csp + i,
fsbtodb(&sblock, sblock.fs_csaddr + j * sblock.fs_frag),
size) != 0 && !asked) {
pfatal("BAD SUMMARY INFORMATION");
if (reply("CONTINUE") == 0) {
ckfini(0);
exit(EEXIT);
}
asked++;
}
}
/*
* allocate and initialize the necessary maps
*/
bmapsize = roundup(howmany(maxfsblock, NBBY), sizeof(short));
blockmap = calloc((unsigned)bmapsize, sizeof (char));
if (blockmap == NULL) {
printf("cannot alloc %u bytes for blockmap\n",
(unsigned)bmapsize);
goto badsb;
}
inostathead = calloc((unsigned)(sblock.fs_ncg),
sizeof(struct inostatlist));
if (inostathead == NULL) {
printf("cannot alloc %u bytes for inostathead\n",
(unsigned)(sizeof(struct inostatlist) * (sblock.fs_ncg)));
goto badsb;
}
numdirs = sblock.fs_cstotal.cs_ndir;
/*
* Calculate the directory hash table size. Do not allocate
* a ridiculous amount of memory if we have a lot of directories.
*/
for (dirhash = 16; dirhash < numdirs; dirhash <<= 1)
;
if (dirhash > 1024*1024)
dirhash /= 8;
dirhashmask = dirhash - 1;
if (numdirs == 0) {
printf("numdirs is zero, try using an alternate superblock\n");
goto badsb;
}
inplast = 0;
listmax = numdirs + 10;
inpsort = calloc((unsigned)listmax, sizeof(struct inoinfo *));
inphead = calloc((unsigned)dirhash, sizeof(struct inoinfo *));
if (inpsort == NULL || inphead == NULL) {
printf("cannot allocate base structures for %ld directories\n",
numdirs);
goto badsb;
}
bufinit();
if (sblock.fs_flags & FS_DOSOFTDEP)
usedsoftdep = 1;
else
usedsoftdep = 0;
return (1);
badsb:
ckfini(0);
return (0);
}
int
setup(const char *dev)
{
long cg, asked, i;
long bmapsize;
struct disklabel *lp;
off_t sizepb;
struct stat statb;
struct m_ext2fs proto;
int doskipclean;
u_int64_t maxfilesize;
havesb = 0;
fswritefd = -1;
doskipclean = skipclean;
if (stat(dev, &statb) < 0) {
printf("Can't stat %s: %s\n", dev, strerror(errno));
return 0;
}
if (!S_ISCHR(statb.st_mode)) {
pfatal("%s is not a character device", dev);
if (reply("CONTINUE") == 0)
return 0;
}
if ((fsreadfd = open(dev, O_RDONLY)) < 0) {
printf("Can't open %s: %s\n", dev, strerror(errno));
return 0;
}
if (preen == 0)
printf("** %s", dev);
if (nflag || (fswritefd = open(dev, O_WRONLY)) < 0) {
fswritefd = -1;
if (preen)
pfatal("NO WRITE ACCESS");
printf(" (NO WRITE)");
}
if (preen == 0)
printf("\n");
fsmodified = 0;
lfdir = 0;
initbarea(&sblk);
initbarea(&asblk);
sblk.b_un.b_buf = malloc(SBSIZE);
asblk.b_un.b_buf = malloc(SBSIZE);
if (sblk.b_un.b_buf == NULL || asblk.b_un.b_buf == NULL)
errexit("cannot allocate space for superblock");
if ((lp = getdisklabel(NULL, fsreadfd)) != NULL)
dev_bsize = secsize = lp->d_secsize;
else
dev_bsize = secsize = DEV_BSIZE;
/*
* Read in the superblock, looking for alternates if necessary
*/
if (readsb(1) == 0) {
if (bflag || preen || calcsb(dev, fsreadfd, &proto) == 0)
return 0;
if (reply("LOOK FOR ALTERNATE SUPERBLOCKS") == 0)
return 0;
for (cg = 1; cg < proto.e2fs_ncg; cg++) {
bflag = EXT2_FSBTODB(&proto,
cg * proto.e2fs.e2fs_bpg +
proto.e2fs.e2fs_first_dblock);
if (readsb(0) != 0)
break;
}
if (cg >= proto.e2fs_ncg) {
printf("%s %s\n%s %s\n%s %s\n",
"SEARCH FOR ALTERNATE SUPER-BLOCK",
"FAILED. YOU MUST USE THE",
"-b OPTION TO FSCK_FFS TO SPECIFY THE",
"LOCATION OF AN ALTERNATE",
"SUPER-BLOCK TO SUPPLY NEEDED",
"INFORMATION; SEE fsck_ext2fs(8).");
return 0;
}
doskipclean = 0;
pwarn("USING ALTERNATE SUPERBLOCK AT %d\n", bflag);
}
if (debug)
printf("state = %d\n", sblock.e2fs.e2fs_state);
if (sblock.e2fs.e2fs_state == E2FS_ISCLEAN) {
if (doskipclean) {
pwarn("%sile system is clean; not checking\n",
preen ? "f" : "** F");
return -1;
}
if (!preen)
pwarn("** File system is already clean\n");
}
maxfsblock = sblock.e2fs.e2fs_bcount;
maxino = sblock.e2fs_ncg * sblock.e2fs.e2fs_ipg;
sizepb = sblock.e2fs_bsize;
maxfilesize = sblock.e2fs_bsize * EXT2FS_NDADDR - 1;
for (i = 0; i < EXT2FS_NIADDR; i++) {
sizepb *= EXT2_NINDIR(&sblock);
maxfilesize += sizepb;
}
/*
* Check and potentially fix certain fields in the super block.
*/
if (/* (sblock.e2fs.e2fs_rbcount < 0) || */
(sblock.e2fs.e2fs_rbcount > sblock.e2fs.e2fs_bcount)) {
pfatal("IMPOSSIBLE RESERVED BLOCK COUNT=%d IN SUPERBLOCK",
sblock.e2fs.e2fs_rbcount);
if (reply("SET TO DEFAULT") == 1) {
sblock.e2fs.e2fs_rbcount =
sblock.e2fs.e2fs_bcount * MINFREE / 100;
sbdirty();
dirty(&asblk);
}
}
if (sblock.e2fs.e2fs_bpg != sblock.e2fs.e2fs_fpg) {
pfatal("WRONG FPG=%d (BPG=%d) IN SUPERBLOCK",
sblock.e2fs.e2fs_fpg, sblock.e2fs.e2fs_bpg);
return 0;
}
if (asblk.b_dirty && !bflag) {
copyback_sb(&asblk);
flush(fswritefd, &asblk);
}
/*
* read in the summary info.
*/
sblock.e2fs_gd = malloc(sblock.e2fs_ngdb * sblock.e2fs_bsize);
if (sblock.e2fs_gd == NULL)
errexit("out of memory");
asked = 0;
for (i = 0; i < sblock.e2fs_ngdb; i++) {
if (bread(fsreadfd,
(char *)&sblock.e2fs_gd[i * sblock.e2fs_bsize /
sizeof(struct ext2_gd)],
EXT2_FSBTODB(&sblock, ((sblock.e2fs_bsize > 1024) ? 0 : 1) +
i + 1),
sblock.e2fs_bsize) != 0 && !asked) {
pfatal("BAD SUMMARY INFORMATION");
if (reply("CONTINUE") == 0)
exit(FSCK_EXIT_CHECK_FAILED);
asked++;
}
}
/*
* allocate and initialize the necessary maps
*/
bmapsize = roundup(howmany(maxfsblock, NBBY), sizeof(int16_t));
blockmap = calloc((unsigned int)bmapsize, sizeof(char));
if (blockmap == NULL) {
printf("cannot alloc %u bytes for blockmap\n",
(unsigned int)bmapsize);
goto badsblabel;
}
statemap = calloc((unsigned int)(maxino + 2), sizeof(char));
if (statemap == NULL) {
printf("cannot alloc %u bytes for statemap\n",
(unsigned int)(maxino + 1));
goto badsblabel;
}
typemap = calloc((unsigned int)(maxino + 1), sizeof(char));
if (typemap == NULL) {
printf("cannot alloc %u bytes for typemap\n",
(unsigned int)(maxino + 1));
goto badsblabel;
}
lncntp = calloc((unsigned)(maxino + 1), sizeof(int16_t));
if (lncntp == NULL) {
printf("cannot alloc %u bytes for lncntp\n",
(unsigned int)((maxino + 1) * sizeof(int16_t)));
goto badsblabel;
}
for (numdirs = 0, cg = 0; cg < sblock.e2fs_ncg; cg++) {
numdirs += fs2h16(sblock.e2fs_gd[cg].ext2bgd_ndirs);
}
inplast = 0;
listmax = numdirs + 10;
inpsort = calloc((unsigned int)listmax, sizeof(struct inoinfo *));
inphead = calloc((unsigned int)numdirs, sizeof(struct inoinfo *));
if (inpsort == NULL || inphead == NULL) {
printf("cannot alloc %u bytes for inphead\n",
(unsigned int)(numdirs * sizeof(struct inoinfo *)));
goto badsblabel;
}
bufinit();
return 1;
badsblabel:
ckfini(0);
return 0;
}
