int
cgbfree(struct uufsd *disk, ufs2_daddr_t bno, long size)
{
u_int8_t *blksfree;
struct fs *fs;
struct cg *cgp;
ufs1_daddr_t fragno, cgbno;
int i, cg, blk, frags, bbase;
fs = &disk->d_fs;
cg = dtog(fs, bno);
if (cgread1(disk, cg) != 1)
return (-1);
cgp = &disk->d_cg;
cgbno = dtogd(fs, bno);
blksfree = cg_blksfree(cgp);
if (size == fs->fs_bsize) {
fragno = fragstoblks(fs, cgbno);
ffs_setblock(fs, blksfree, fragno);
ffs_clusteracct(fs, cgp, fragno, 1);
cgp->cg_cs.cs_nbfree++;
fs->fs_cstotal.cs_nbfree++;
fs->fs_cs(fs, cg).cs_nbfree++;
} else {
bbase = cgbno - fragnum(fs, cgbno);
/*
* decrement the counts associated with the old frags
*/
blk = blkmap(fs, blksfree, bbase);
ffs_fragacct(fs, blk, cgp->cg_frsum, -1);
/*
* deallocate the fragment
*/
frags = numfrags(fs, size);
for (i = 0; i < frags; i++)
setbit(blksfree, cgbno + i);
cgp->cg_cs.cs_nffree += i;
fs->fs_cstotal.cs_nffree += i;
fs->fs_cs(fs, cg).cs_nffree += i;
/*
* add back in counts associated with the new frags
*/
blk = blkmap(fs, blksfree, bbase);
ffs_fragacct(fs, blk, cgp->cg_frsum, 1);
/*
* if a complete block has been reassembled, account for it
*/
fragno = fragstoblks(fs, bbase);
if (ffs_isblock(fs, blksfree, fragno)) {
cgp->cg_cs.cs_nffree -= fs->fs_frag;
fs->fs_cstotal.cs_nffree -= fs->fs_frag;
fs->fs_cs(fs, cg).cs_nffree -= fs->fs_frag;
ffs_clusteracct(fs, cgp, fragno, 1);
cgp->cg_cs.cs_nbfree++;
fs->fs_cstotal.cs_nbfree++;
fs->fs_cs(fs, cg).cs_nbfree++;
}
}
return cgwrite(disk);
}
/*
* Change the number of unreferenced inodes.
*/
static int
ufs_gjournal_modref(struct vnode *vp, int count)
{
struct cg *cgp;
struct buf *bp;
ufs2_daddr_t cgbno;
int error, cg;
struct cdev *dev;
struct inode *ip;
struct ufsmount *ump;
struct fs *fs;
struct vnode *devvp;
ino_t ino;
ip = VTOI(vp);
ump = VFSTOUFS(vp->v_mount);
fs = ump->um_fs;
devvp = ump->um_devvp;
ino = ip->i_number;
cg = ino_to_cg(fs, ino);
if (devvp->v_type == VREG) {
/* devvp is a snapshot */
dev = VFSTOUFS(devvp->v_mount)->um_devvp->v_rdev;
cgbno = fragstoblks(fs, cgtod(fs, cg));
} else if (devvp->v_type == VCHR) {
/* devvp is a normal disk device */
dev = devvp->v_rdev;
cgbno = fsbtodb(fs, cgtod(fs, cg));
} else {
bp = NULL;
return (EIO);
}
if ((u_int)ino >= fs->fs_ipg * fs->fs_ncg)
panic("ufs_gjournal_modref: range: dev = %s, ino = %lu, fs = %s",
devtoname(dev), (u_long)ino, fs->fs_fsmnt);
if ((error = bread(devvp, cgbno, (int)fs->fs_cgsize, NOCRED, &bp))) {
brelse(bp);
return (error);
}
cgp = (struct cg *)bp->b_data;
if (!cg_chkmagic(cgp)) {
brelse(bp);
return (0);
}
bp->b_xflags |= BX_BKGRDWRITE;
cgp->cg_unrefs += count;
UFS_LOCK(ump);
fs->fs_unrefs += count;
fs->fs_fmod = 1;
ACTIVECLEAR(fs, cg);
UFS_UNLOCK(ump);
bdwrite(bp);
return (0);
}
static int
marshal(const char *name)
{
struct fs *fs;
fs = &disk.d_fs;
printf("# newfs command for %s (%s)\n", name, disk.d_name);
printf("newfs ");
if (fs->fs_volname[0] != '\0')
printf("-L %s ", fs->fs_volname);
printf("-O %d ", disk.d_ufs);
if (fs->fs_flags & FS_DOSOFTDEP)
printf("-U ");
printf("-a %d ", fs->fs_maxcontig);
printf("-b %d ", fs->fs_bsize);
/* -c is dumb */
printf("-d %d ", fs->fs_maxbsize);
printf("-e %d ", fs->fs_maxbpg);
printf("-f %d ", fs->fs_fsize);
printf("-g %d ", fs->fs_avgfilesize);
printf("-h %d ", fs->fs_avgfpdir);
printf("-i %jd ", fragroundup(fs, lblktosize(fs, fragstoblks(fs,
fs->fs_fpg)) / fs->fs_ipg));
if (fs->fs_flags & FS_SUJ)
printf("-j ");
if (fs->fs_flags & FS_GJOURNAL)
printf("-J ");
printf("-k %jd ", fs->fs_metaspace);
if (fs->fs_flags & FS_MULTILABEL)
printf("-l ");
printf("-m %d ", fs->fs_minfree);
/* -n unimplemented */
printf("-o ");
switch (fs->fs_optim) {
case FS_OPTSPACE:
printf("space ");
break;
case FS_OPTTIME:
printf("time ");
break;
default:
printf("unknown ");
break;
}
/* -p..r unimplemented */
printf("-s %jd ", (intmax_t)fsbtodb(fs, fs->fs_size));
if (fs->fs_flags & FS_TRIM)
printf("-t ");
printf("%s ", disk.d_name);
printf("\n");
return 0;
}
/*
* Allocate a block in a cylinder group.
*
* This algorithm implements the following policy:
* 1) allocate the requested block.
* 2) allocate a rotationally optimal block in the same cylinder.
* 3) allocate the next available block on the block rotor for the
* specified cylinder group.
* Note that this routine only allocates fs_bsize blocks; these
* blocks may be fragmented by the routine that allocates them.
*/
static daddr_t
ffs_alloccgblk(struct inode *ip, struct buf *bp, daddr_t bpref)
{
struct cg *cgp;
daddr_t blkno;
int32_t bno;
struct fs *fs = ip->i_fs;
const int needswap = UFS_FSNEEDSWAP(fs);
u_int8_t *blksfree_swap;
cgp = (struct cg *)bp->b_data;
blksfree_swap = cg_blksfree_swap(cgp, needswap);
if (bpref == 0 || (uint32_t)dtog(fs, bpref) != ufs_rw32(cgp->cg_cgx, needswap)) {
bpref = ufs_rw32(cgp->cg_rotor, needswap);
} else {
bpref = blknum(fs, bpref);
bno = dtogd(fs, bpref);
/*
* if the requested block is available, use it
*/
if (ffs_isblock(fs, blksfree_swap, fragstoblks(fs, bno)))
goto gotit;
}
/*
* Take the next available one in this cylinder group.
*/
bno = ffs_mapsearch(fs, cgp, bpref, (int)fs->fs_frag);
if (bno < 0)
return (0);
cgp->cg_rotor = ufs_rw32(bno, needswap);
gotit:
blkno = fragstoblks(fs, bno);
ffs_clrblock(fs, blksfree_swap, (long)blkno);
ffs_clusteracct(fs, cgp, blkno, -1);
ufs_add32(cgp->cg_cs.cs_nbfree, -1, needswap);
fs->fs_cstotal.cs_nbfree--;
fs->fs_cs(fs, ufs_rw32(cgp->cg_cgx, needswap)).cs_nbfree--;
fs->fs_fmod = 1;
blkno = ufs_rw32(cgp->cg_cgx, needswap) * fs->fs_fpg + bno;
return (blkno);
}
/*
* allocate a block or frag
*/
daddr64_t
alloc(int size, int mode)
{
int i, frag;
daddr64_t d, blkno;
rdfs(fsbtodb(&sblock, cgtod(&sblock, 0)), sblock.fs_cgsize,
(char *)&acg);
if (acg.cg_magic != CG_MAGIC) {
warnx("cg 0: bad magic number");
return (0);
}
if (acg.cg_cs.cs_nbfree == 0) {
warnx("first cylinder group ran out of space");
return (0);
}
for (d = 0; d < acg.cg_ndblk; d += sblock.fs_frag)
if (isblock(&sblock, cg_blksfree(&acg), d / sblock.fs_frag))
goto goth;
warnx("internal error: can't find block in cyl 0");
return (0);
goth:
blkno = fragstoblks(&sblock, d);
clrblock(&sblock, cg_blksfree(&acg), blkno);
acg.cg_cs.cs_nbfree--;
sblock.fs_cstotal.cs_nbfree--;
fscs[0].cs_nbfree--;
if (mode & IFDIR) {
acg.cg_cs.cs_ndir++;
sblock.fs_cstotal.cs_ndir++;
fscs[0].cs_ndir++;
}
if (Oflag <= 1) {
cg_blktot(&acg)[cbtocylno(&sblock, d)]--;
cg_blks(&sblock, &acg, cbtocylno(&sblock, d))
[cbtorpos(&sblock, d)]--;
}
if (size != sblock.fs_bsize) {
frag = howmany(size, sblock.fs_fsize);
fscs[0].cs_nffree += sblock.fs_frag - frag;
sblock.fs_cstotal.cs_nffree += sblock.fs_frag - frag;
acg.cg_cs.cs_nffree += sblock.fs_frag - frag;
acg.cg_frsum[sblock.fs_frag - frag]++;
for (i = frag; i < sblock.fs_frag; i++)
setbit(cg_blksfree(&acg), d + i);
}
wtfs(fsbtodb(&sblock, cgtod(&sblock, 0)), sblock.fs_cgsize,
(char *)&acg);
return (d);
}
/*
* allocate a block or frag
*/
ufs2_daddr_t
alloc(int size, int mode)
{
int i, blkno, frag;
uint d;
bread(&disk, part_ofs + fsbtodb(&sblock, cgtod(&sblock, 0)), (char *)&acg,
sblock.fs_cgsize);
if (acg.cg_magic != CG_MAGIC) {
printf("cg 0: bad magic number\n");
exit(38);
}
if (acg.cg_cs.cs_nbfree == 0) {
printf("first cylinder group ran out of space\n");
exit(39);
}
for (d = 0; d < acg.cg_ndblk; d += sblock.fs_frag)
if (isblock(&sblock, cg_blksfree(&acg), d / sblock.fs_frag))
goto goth;
printf("internal error: can't find block in cyl 0\n");
exit(40);
goth:
blkno = fragstoblks(&sblock, d);
clrblock(&sblock, cg_blksfree(&acg), blkno);
if (sblock.fs_contigsumsize > 0)
clrbit(cg_clustersfree(&acg), blkno);
acg.cg_cs.cs_nbfree--;
sblock.fs_cstotal.cs_nbfree--;
fscs[0].cs_nbfree--;
if (mode & IFDIR) {
acg.cg_cs.cs_ndir++;
sblock.fs_cstotal.cs_ndir++;
fscs[0].cs_ndir++;
}
if (size != sblock.fs_bsize) {
frag = howmany(size, sblock.fs_fsize);
fscs[0].cs_nffree += sblock.fs_frag - frag;
sblock.fs_cstotal.cs_nffree += sblock.fs_frag - frag;
acg.cg_cs.cs_nffree += sblock.fs_frag - frag;
acg.cg_frsum[sblock.fs_frag - frag]++;
for (i = frag; i < sblock.fs_frag; i++)
setbit(cg_blksfree(&acg), d + i);
}
/* XXX cgwrite(&disk, 0)??? */
wtfs(fsbtodb(&sblock, cgtod(&sblock, 0)), sblock.fs_cgsize,
(char *)&acg);
return ((ufs2_daddr_t)d);
}
/*
* Initialize a cylinder group.
*/
static void
initcg(int cylno, time_t utime, const fsinfo_t *fsopts)
{
daddr_t cbase, dmax;
int32_t i, j, d, dlower, dupper, blkno;
struct ufs1_dinode *dp1;
struct ufs2_dinode *dp2;
int start;
/*
* Determine block bounds for cylinder group.
* Allow space for super block summary information in first
* cylinder group.
*/
cbase = cgbase(&sblock, cylno);
dmax = cbase + sblock.fs_fpg;
if (dmax > sblock.fs_size)
dmax = sblock.fs_size;
dlower = cgsblock(&sblock, cylno) - cbase;
dupper = cgdmin(&sblock, cylno) - cbase;
if (cylno == 0)
dupper += howmany(sblock.fs_cssize, sblock.fs_fsize);
memset(&acg, 0, sblock.fs_cgsize);
acg.cg_time = utime;
acg.cg_magic = CG_MAGIC;
acg.cg_cgx = cylno;
acg.cg_niblk = sblock.fs_ipg;
acg.cg_initediblk = MIN(sblock.fs_ipg, 2 * INOPB(&sblock));
acg.cg_ndblk = dmax - cbase;
if (sblock.fs_contigsumsize > 0)
acg.cg_nclusterblks = acg.cg_ndblk >> sblock.fs_fragshift;
start = &acg.cg_space[0] - (u_char *)(&acg.cg_firstfield);
if (Oflag == 2) {
acg.cg_iusedoff = start;
} else {
if (cylno == sblock.fs_ncg - 1)
acg.cg_old_ncyl = howmany(acg.cg_ndblk,
sblock.fs_fpg / sblock.fs_old_cpg);
else
acg.cg_old_ncyl = sblock.fs_old_cpg;
acg.cg_old_time = acg.cg_time;
acg.cg_time = 0;
acg.cg_old_niblk = acg.cg_niblk;
acg.cg_niblk = 0;
acg.cg_initediblk = 0;
acg.cg_old_btotoff = start;
acg.cg_old_boff = acg.cg_old_btotoff +
sblock.fs_old_cpg * sizeof(int32_t);
acg.cg_iusedoff = acg.cg_old_boff +
sblock.fs_old_cpg * sizeof(u_int16_t);
}
acg.cg_freeoff = acg.cg_iusedoff + howmany(sblock.fs_ipg, CHAR_BIT);
if (sblock.fs_contigsumsize <= 0) {
acg.cg_nextfreeoff = acg.cg_freeoff +
howmany(sblock.fs_fpg, CHAR_BIT);
} else {
acg.cg_clustersumoff = acg.cg_freeoff +
howmany(sblock.fs_fpg, CHAR_BIT) - sizeof(int32_t);
acg.cg_clustersumoff =
roundup(acg.cg_clustersumoff, sizeof(int32_t));
acg.cg_clusteroff = acg.cg_clustersumoff +
(sblock.fs_contigsumsize + 1) * sizeof(int32_t);
acg.cg_nextfreeoff = acg.cg_clusteroff +
howmany(fragstoblks(&sblock, sblock.fs_fpg), CHAR_BIT);
}
if (acg.cg_nextfreeoff > sblock.fs_cgsize) {
printf("Panic: cylinder group too big\n");
exit(37);
}
acg.cg_cs.cs_nifree += sblock.fs_ipg;
if (cylno == 0)
for (i = 0; i < ROOTINO; i++) {
setbit(cg_inosused_swap(&acg, 0), i);
acg.cg_cs.cs_nifree--;
}
if (cylno > 0) {
/*
* In cylno 0, beginning space is reserved
* for boot and super blocks.
*/
for (d = 0, blkno = 0; d < dlower;) {
ffs_setblock(&sblock, cg_blksfree_swap(&acg, 0), blkno);
if (sblock.fs_contigsumsize > 0)
setbit(cg_clustersfree_swap(&acg, 0), blkno);
acg.cg_cs.cs_nbfree++;
d += sblock.fs_frag;
blkno++;
}
}
if ((i = (dupper & (sblock.fs_frag - 1))) != 0) {
acg.cg_frsum[sblock.fs_frag - i]++;
for (d = dupper + sblock.fs_frag - i; dupper < d; dupper++) {
setbit(cg_blksfree_swap(&acg, 0), dupper);
acg.cg_cs.cs_nffree++;
}
}
for (d = dupper, blkno = dupper >> sblock.fs_fragshift;
d + sblock.fs_frag <= acg.cg_ndblk; ) {
struct fs *
ffs_mkfs(const char *fsys, const fsinfo_t *fsopts, time_t tstamp)
{
int fragsperinode, optimalfpg, origdensity, minfpg, lastminfpg;
int32_t cylno, i, csfrags;
long long sizepb;
void *space;
int size, blks;
int nprintcols, printcolwidth;
ffs_opt_t *ffs_opts = fsopts->fs_specific;
Oflag = ffs_opts->version;
fssize = fsopts->size / fsopts->sectorsize;
sectorsize = fsopts->sectorsize;
fsize = ffs_opts->fsize;
bsize = ffs_opts->bsize;
maxbsize = ffs_opts->maxbsize;
maxblkspercg = ffs_opts->maxblkspercg;
minfree = ffs_opts->minfree;
opt = ffs_opts->optimization;
density = ffs_opts->density;
maxcontig = ffs_opts->maxcontig;
maxbpg = ffs_opts->maxbpg;
avgfilesize = ffs_opts->avgfilesize;
avgfpdir = ffs_opts->avgfpdir;
bbsize = BBSIZE;
sbsize = SBLOCKSIZE;
strlcpy(sblock.fs_volname, ffs_opts->label, sizeof(sblock.fs_volname));
if (Oflag == 0) {
sblock.fs_old_inodefmt = FS_42INODEFMT;
sblock.fs_maxsymlinklen = 0;
sblock.fs_old_flags = 0;
} else {
sblock.fs_old_inodefmt = FS_44INODEFMT;
sblock.fs_maxsymlinklen = (Oflag == 1 ? MAXSYMLINKLEN_UFS1 :
MAXSYMLINKLEN_UFS2);
sblock.fs_old_flags = FS_FLAGS_UPDATED;
sblock.fs_flags = 0;
}
/*
* Validate the given file system size.
* Verify that its last block can actually be accessed.
* Convert to file system fragment sized units.
*/
if (fssize <= 0) {
printf("preposterous size %lld\n", (long long)fssize);
exit(13);
}
ffs_wtfs(fssize - 1, sectorsize, (char *)&sblock, fsopts);
/*
* collect and verify the filesystem density info
*/
sblock.fs_avgfilesize = avgfilesize;
sblock.fs_avgfpdir = avgfpdir;
if (sblock.fs_avgfilesize <= 0)
printf("illegal expected average file size %d\n",
sblock.fs_avgfilesize), exit(14);
if (sblock.fs_avgfpdir <= 0)
printf("illegal expected number of files per directory %d\n",
sblock.fs_avgfpdir), exit(15);
/*
* collect and verify the block and fragment sizes
*/
sblock.fs_bsize = bsize;
sblock.fs_fsize = fsize;
if (!POWEROF2(sblock.fs_bsize)) {
printf("block size must be a power of 2, not %d\n",
sblock.fs_bsize);
exit(16);
}
if (!POWEROF2(sblock.fs_fsize)) {
printf("fragment size must be a power of 2, not %d\n",
sblock.fs_fsize);
exit(17);
}
if (sblock.fs_fsize < sectorsize) {
printf("fragment size %d is too small, minimum is %d\n",
sblock.fs_fsize, sectorsize);
exit(18);
}
if (sblock.fs_bsize < MINBSIZE) {
printf("block size %d is too small, minimum is %d\n",
sblock.fs_bsize, MINBSIZE);
exit(19);
}
if (sblock.fs_bsize > FFS_MAXBSIZE) {
printf("block size %d is too large, maximum is %d\n",
sblock.fs_bsize, FFS_MAXBSIZE);
exit(19);
}
if (sblock.fs_bsize < sblock.fs_fsize) {
printf("block size (%d) cannot be smaller than fragment size (%d)\n",
sblock.fs_bsize, sblock.fs_fsize);
exit(20);
}
if (maxbsize < bsize || !POWEROF2(maxbsize)) {
sblock.fs_maxbsize = sblock.fs_bsize;
printf("Extent size set to %d\n", sblock.fs_maxbsize);
} else if (sblock.fs_maxbsize > FS_MAXCONTIG * sblock.fs_bsize) {
sblock.fs_maxbsize = FS_MAXCONTIG * sblock.fs_bsize;
printf("Extent size reduced to %d\n", sblock.fs_maxbsize);
} else {
sblock.fs_maxbsize = maxbsize;
}
sblock.fs_maxcontig = maxcontig;
if (sblock.fs_maxcontig < sblock.fs_maxbsize / sblock.fs_bsize) {
sblock.fs_maxcontig = sblock.fs_maxbsize / sblock.fs_bsize;
printf("Maxcontig raised to %d\n", sblock.fs_maxbsize);
}
if (sblock.fs_maxcontig > 1)
sblock.fs_contigsumsize = MIN(sblock.fs_maxcontig,FS_MAXCONTIG);
sblock.fs_bmask = ~(sblock.fs_bsize - 1);
sblock.fs_fmask = ~(sblock.fs_fsize - 1);
sblock.fs_qbmask = ~sblock.fs_bmask;
sblock.fs_qfmask = ~sblock.fs_fmask;
for (sblock.fs_bshift = 0, i = sblock.fs_bsize; i > 1; i >>= 1)
sblock.fs_bshift++;
for (sblock.fs_fshift = 0, i = sblock.fs_fsize; i > 1; i >>= 1)
sblock.fs_fshift++;
sblock.fs_frag = numfrags(&sblock, sblock.fs_bsize);
for (sblock.fs_fragshift = 0, i = sblock.fs_frag; i > 1; i >>= 1)
sblock.fs_fragshift++;
if (sblock.fs_frag > MAXFRAG) {
printf("fragment size %d is too small, "
"minimum with block size %d is %d\n",
sblock.fs_fsize, sblock.fs_bsize,
sblock.fs_bsize / MAXFRAG);
exit(21);
}
sblock.fs_fsbtodb = ilog2(sblock.fs_fsize / sectorsize);
sblock.fs_size = sblock.fs_providersize = fssize =
dbtofsb(&sblock, fssize);
if (Oflag <= 1) {
sblock.fs_magic = FS_UFS1_MAGIC;
sblock.fs_sblockloc = SBLOCK_UFS1;
sblock.fs_nindir = sblock.fs_bsize / sizeof(ufs1_daddr_t);
sblock.fs_inopb = sblock.fs_bsize / sizeof(struct ufs1_dinode);
sblock.fs_maxsymlinklen = ((NDADDR + NIADDR) *
sizeof (ufs1_daddr_t));
sblock.fs_old_inodefmt = FS_44INODEFMT;
sblock.fs_old_cgoffset = 0;
sblock.fs_old_cgmask = 0xffffffff;
sblock.fs_old_size = sblock.fs_size;
sblock.fs_old_rotdelay = 0;
sblock.fs_old_rps = 60;
sblock.fs_old_nspf = sblock.fs_fsize / sectorsize;
sblock.fs_old_cpg = 1;
sblock.fs_old_interleave = 1;
sblock.fs_old_trackskew = 0;
sblock.fs_old_cpc = 0;
sblock.fs_old_postblformat = 1;
sblock.fs_old_nrpos = 1;
} else {
sblock.fs_magic = FS_UFS2_MAGIC;
sblock.fs_sblockloc = SBLOCK_UFS2;
sblock.fs_nindir = sblock.fs_bsize / sizeof(ufs2_daddr_t);
sblock.fs_inopb = sblock.fs_bsize / sizeof(struct ufs2_dinode);
sblock.fs_maxsymlinklen = ((NDADDR + NIADDR) *
sizeof (ufs2_daddr_t));
}
sblock.fs_sblkno =
roundup(howmany(sblock.fs_sblockloc + SBLOCKSIZE, sblock.fs_fsize),
sblock.fs_frag);
sblock.fs_cblkno = (daddr_t)(sblock.fs_sblkno +
roundup(howmany(SBLOCKSIZE, sblock.fs_fsize), sblock.fs_frag));
sblock.fs_iblkno = sblock.fs_cblkno + sblock.fs_frag;
sblock.fs_maxfilesize = sblock.fs_bsize * NDADDR - 1;
for (sizepb = sblock.fs_bsize, i = 0; i < NIADDR; i++) {
sizepb *= NINDIR(&sblock);
sblock.fs_maxfilesize += sizepb;
}
/*
* Calculate the number of blocks to put into each cylinder group.
*
* This algorithm selects the number of blocks per cylinder
* group. The first goal is to have at least enough data blocks
* in each cylinder group to meet the density requirement. Once
* this goal is achieved we try to expand to have at least
* 1 cylinder group. Once this goal is achieved, we pack as
* many blocks into each cylinder group map as will fit.
*
* We start by calculating the smallest number of blocks that we
* can put into each cylinder group. If this is too big, we reduce
* the density until it fits.
*/
origdensity = density;
for (;;) {
fragsperinode = MAX(numfrags(&sblock, density), 1);
minfpg = fragsperinode * INOPB(&sblock);
if (minfpg > sblock.fs_size)
minfpg = sblock.fs_size;
sblock.fs_ipg = INOPB(&sblock);
sblock.fs_fpg = roundup(sblock.fs_iblkno +
sblock.fs_ipg / INOPF(&sblock), sblock.fs_frag);
if (sblock.fs_fpg < minfpg)
sblock.fs_fpg = minfpg;
sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode),
INOPB(&sblock));
sblock.fs_fpg = roundup(sblock.fs_iblkno +
sblock.fs_ipg / INOPF(&sblock), sblock.fs_frag);
if (sblock.fs_fpg < minfpg)
sblock.fs_fpg = minfpg;
sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode),
INOPB(&sblock));
if (CGSIZE(&sblock) < (unsigned long)sblock.fs_bsize)
break;
density -= sblock.fs_fsize;
}
if (density != origdensity)
printf("density reduced from %d to %d\n", origdensity, density);
if (maxblkspercg <= 0 || maxblkspercg >= fssize)
maxblkspercg = fssize - 1;
/*
* Start packing more blocks into the cylinder group until
* it cannot grow any larger, the number of cylinder groups
* drops below 1, or we reach the size requested.
*/
for ( ; sblock.fs_fpg < maxblkspercg; sblock.fs_fpg += sblock.fs_frag) {
sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode),
INOPB(&sblock));
if (sblock.fs_size / sblock.fs_fpg < 1)
break;
if (CGSIZE(&sblock) < (unsigned long)sblock.fs_bsize)
continue;
if (CGSIZE(&sblock) == (unsigned long)sblock.fs_bsize)
break;
sblock.fs_fpg -= sblock.fs_frag;
sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode),
INOPB(&sblock));
break;
}
/*
* Check to be sure that the last cylinder group has enough blocks
* to be viable. If it is too small, reduce the number of blocks
* per cylinder group which will have the effect of moving more
* blocks into the last cylinder group.
*/
optimalfpg = sblock.fs_fpg;
for (;;) {
sblock.fs_ncg = howmany(sblock.fs_size, sblock.fs_fpg);
lastminfpg = roundup(sblock.fs_iblkno +
sblock.fs_ipg / INOPF(&sblock), sblock.fs_frag);
if (sblock.fs_size < lastminfpg) {
printf("Filesystem size %lld < minimum size of %d\n",
(long long)sblock.fs_size, lastminfpg);
exit(28);
}
if (sblock.fs_size % sblock.fs_fpg >= lastminfpg ||
sblock.fs_size % sblock.fs_fpg == 0)
break;
sblock.fs_fpg -= sblock.fs_frag;
sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode),
INOPB(&sblock));
}
if (optimalfpg != sblock.fs_fpg)
printf("Reduced frags per cylinder group from %d to %d %s\n",
optimalfpg, sblock.fs_fpg, "to enlarge last cyl group");
sblock.fs_cgsize = fragroundup(&sblock, CGSIZE(&sblock));
sblock.fs_dblkno = sblock.fs_iblkno + sblock.fs_ipg / INOPF(&sblock);
if (Oflag <= 1) {
sblock.fs_old_spc = sblock.fs_fpg * sblock.fs_old_nspf;
sblock.fs_old_nsect = sblock.fs_old_spc;
sblock.fs_old_npsect = sblock.fs_old_spc;
sblock.fs_old_ncyl = sblock.fs_ncg;
}
/*
* fill in remaining fields of the super block
*/
sblock.fs_csaddr = cgdmin(&sblock, 0);
sblock.fs_cssize =
fragroundup(&sblock, sblock.fs_ncg * sizeof(struct csum));
/*
* Setup memory for temporary in-core cylgroup summaries.
* Cribbed from ffs_mountfs().
*/
size = sblock.fs_cssize;
blks = howmany(size, sblock.fs_fsize);
if (sblock.fs_contigsumsize > 0)
size += sblock.fs_ncg * sizeof(int32_t);
if ((space = (char *)calloc(1, size)) == NULL)
err(1, "memory allocation error for cg summaries");
sblock.fs_csp = space;
space = (char *)space + sblock.fs_cssize;
if (sblock.fs_contigsumsize > 0) {
int32_t *lp;
sblock.fs_maxcluster = lp = space;
for (i = 0; i < sblock.fs_ncg; i++)
*lp++ = sblock.fs_contigsumsize;
}
sblock.fs_sbsize = fragroundup(&sblock, sizeof(struct fs));
if (sblock.fs_sbsize > SBLOCKSIZE)
sblock.fs_sbsize = SBLOCKSIZE;
sblock.fs_minfree = minfree;
sblock.fs_maxcontig = maxcontig;
sblock.fs_maxbpg = maxbpg;
sblock.fs_optim = opt;
sblock.fs_cgrotor = 0;
sblock.fs_pendingblocks = 0;
sblock.fs_pendinginodes = 0;
sblock.fs_cstotal.cs_ndir = 0;
sblock.fs_cstotal.cs_nbfree = 0;
sblock.fs_cstotal.cs_nifree = 0;
sblock.fs_cstotal.cs_nffree = 0;
sblock.fs_fmod = 0;
sblock.fs_ronly = 0;
sblock.fs_state = 0;
sblock.fs_clean = FS_ISCLEAN;
sblock.fs_ronly = 0;
sblock.fs_id[0] = tstamp;
sblock.fs_id[1] = random();
sblock.fs_fsmnt[0] = '\0';
csfrags = howmany(sblock.fs_cssize, sblock.fs_fsize);
sblock.fs_dsize = sblock.fs_size - sblock.fs_sblkno -
sblock.fs_ncg * (sblock.fs_dblkno - sblock.fs_sblkno);
sblock.fs_cstotal.cs_nbfree =
fragstoblks(&sblock, sblock.fs_dsize) -
howmany(csfrags, sblock.fs_frag);
sblock.fs_cstotal.cs_nffree =
fragnum(&sblock, sblock.fs_size) +
(fragnum(&sblock, csfrags) > 0 ?
sblock.fs_frag - fragnum(&sblock, csfrags) : 0);
sblock.fs_cstotal.cs_nifree = sblock.fs_ncg * sblock.fs_ipg - ROOTINO;
sblock.fs_cstotal.cs_ndir = 0;
sblock.fs_dsize -= csfrags;
sblock.fs_time = tstamp;
if (Oflag <= 1) {
sblock.fs_old_time = tstamp;
sblock.fs_old_dsize = sblock.fs_dsize;
sblock.fs_old_csaddr = sblock.fs_csaddr;
sblock.fs_old_cstotal.cs_ndir = sblock.fs_cstotal.cs_ndir;
sblock.fs_old_cstotal.cs_nbfree = sblock.fs_cstotal.cs_nbfree;
sblock.fs_old_cstotal.cs_nifree = sblock.fs_cstotal.cs_nifree;
sblock.fs_old_cstotal.cs_nffree = sblock.fs_cstotal.cs_nffree;
}
/*
* Dump out summary information about file system.
*/
#define B2MBFACTOR (1 / (1024.0 * 1024.0))
printf("%s: %.1fMB (%lld sectors) block size %d, "
"fragment size %d\n",
fsys, (float)sblock.fs_size * sblock.fs_fsize * B2MBFACTOR,
(long long)fsbtodb(&sblock, sblock.fs_size),
sblock.fs_bsize, sblock.fs_fsize);
printf("\tusing %d cylinder groups of %.2fMB, %d blks, "
"%d inodes.\n",
sblock.fs_ncg,
(float)sblock.fs_fpg * sblock.fs_fsize * B2MBFACTOR,
sblock.fs_fpg / sblock.fs_frag, sblock.fs_ipg);
#undef B2MBFACTOR
/*
* Now determine how wide each column will be, and calculate how
* many columns will fit in a 76 char line. 76 is the width of the
* subwindows in sysinst.
*/
printcolwidth = count_digits(
fsbtodb(&sblock, cgsblock(&sblock, sblock.fs_ncg -1)));
nprintcols = 76 / (printcolwidth + 2);
/*
* allocate space for superblock, cylinder group map, and
* two sets of inode blocks.
*/
if (sblock.fs_bsize < SBLOCKSIZE)
iobufsize = SBLOCKSIZE + 3 * sblock.fs_bsize;
else
iobufsize = 4 * sblock.fs_bsize;
if ((iobuf = malloc(iobufsize)) == NULL) {
printf("Cannot allocate I/O buffer\n");
exit(38);
}
memset(iobuf, 0, iobufsize);
/*
* Make a copy of the superblock into the buffer that we will be
* writing out in each cylinder group.
*/
memcpy(writebuf, &sblock, sbsize);
if (fsopts->needswap)
ffs_sb_swap(&sblock, (struct fs*)writebuf);
memcpy(iobuf, writebuf, SBLOCKSIZE);
printf("super-block backups (for fsck -b #) at:");
for (cylno = 0; cylno < sblock.fs_ncg; cylno++) {
initcg(cylno, tstamp, fsopts);
if (cylno % nprintcols == 0)
printf("\n");
printf(" %*lld,", printcolwidth,
(long long)fsbtodb(&sblock, cgsblock(&sblock, cylno)));
fflush(stdout);
}
printf("\n");
/*
* Now construct the initial file system,
* then write out the super-block.
*/
sblock.fs_time = tstamp;
if (Oflag <= 1) {
sblock.fs_old_cstotal.cs_ndir = sblock.fs_cstotal.cs_ndir;
sblock.fs_old_cstotal.cs_nbfree = sblock.fs_cstotal.cs_nbfree;
sblock.fs_old_cstotal.cs_nifree = sblock.fs_cstotal.cs_nifree;
sblock.fs_old_cstotal.cs_nffree = sblock.fs_cstotal.cs_nffree;
}
if (fsopts->needswap)
sblock.fs_flags |= FS_SWAPPED;
ffs_write_superblock(&sblock, fsopts);
return (&sblock);
}
void
mkfs(struct partition *pp, char *fsys)
{
int fragsperinode, optimalfpg, origdensity, minfpg, lastminfpg;
long i, j, csfrags;
uint cg;
time_t utime;
quad_t sizepb;
int width;
ino_t maxinum;
int minfragsperinode; /* minimum ratio of frags to inodes */
char tmpbuf[100]; /* XXX this will break in about 2,500 years */
union {
struct fs fdummy;
char cdummy[SBLOCKSIZE];
} dummy;
#define fsdummy dummy.fdummy
#define chdummy dummy.cdummy
/*
* Our blocks == sector size, and the version of UFS we are using is
* specified by Oflag.
*/
disk.d_bsize = sectorsize;
disk.d_ufs = Oflag;
if (Rflag) {
utime = 1000000000;
} else {
time(&utime);
arc4random_stir();
}
sblock.fs_old_flags = FS_FLAGS_UPDATED;
sblock.fs_flags = 0;
if (Uflag)
sblock.fs_flags |= FS_DOSOFTDEP;
if (Lflag)
strlcpy(sblock.fs_volname, volumelabel, MAXVOLLEN);
if (Jflag)
sblock.fs_flags |= FS_GJOURNAL;
if (lflag)
sblock.fs_flags |= FS_MULTILABEL;
if (tflag)
sblock.fs_flags |= FS_TRIM;
/*
* Validate the given file system size.
* Verify that its last block can actually be accessed.
* Convert to file system fragment sized units.
*/
if (fssize <= 0) {
printf("preposterous size %jd\n", (intmax_t)fssize);
exit(13);
}
wtfs(fssize - (realsectorsize / DEV_BSIZE), realsectorsize,
(char *)&sblock);
/*
* collect and verify the file system density info
*/
sblock.fs_avgfilesize = avgfilesize;
sblock.fs_avgfpdir = avgfilesperdir;
if (sblock.fs_avgfilesize <= 0)
printf("illegal expected average file size %d\n",
sblock.fs_avgfilesize), exit(14);
if (sblock.fs_avgfpdir <= 0)
printf("illegal expected number of files per directory %d\n",
sblock.fs_avgfpdir), exit(15);
restart:
/*
* collect and verify the block and fragment sizes
*/
sblock.fs_bsize = bsize;
sblock.fs_fsize = fsize;
if (!POWEROF2(sblock.fs_bsize)) {
printf("block size must be a power of 2, not %d\n",
sblock.fs_bsize);
exit(16);
}
if (!POWEROF2(sblock.fs_fsize)) {
printf("fragment size must be a power of 2, not %d\n",
sblock.fs_fsize);
exit(17);
}
if (sblock.fs_fsize < sectorsize) {
printf("increasing fragment size from %d to sector size (%d)\n",
sblock.fs_fsize, sectorsize);
sblock.fs_fsize = sectorsize;
}
if (sblock.fs_bsize > MAXBSIZE) {
printf("decreasing block size from %d to maximum (%d)\n",
sblock.fs_bsize, MAXBSIZE);
sblock.fs_bsize = MAXBSIZE;
}
if (sblock.fs_bsize < MINBSIZE) {
printf("increasing block size from %d to minimum (%d)\n",
sblock.fs_bsize, MINBSIZE);
sblock.fs_bsize = MINBSIZE;
}
if (sblock.fs_fsize > MAXBSIZE) {
printf("decreasing fragment size from %d to maximum (%d)\n",
sblock.fs_fsize, MAXBSIZE);
sblock.fs_fsize = MAXBSIZE;
}
if (sblock.fs_bsize < sblock.fs_fsize) {
printf("increasing block size from %d to fragment size (%d)\n",
sblock.fs_bsize, sblock.fs_fsize);
sblock.fs_bsize = sblock.fs_fsize;
}
if (sblock.fs_fsize * MAXFRAG < sblock.fs_bsize) {
printf(
"increasing fragment size from %d to block size / %d (%d)\n",
sblock.fs_fsize, MAXFRAG, sblock.fs_bsize / MAXFRAG);
sblock.fs_fsize = sblock.fs_bsize / MAXFRAG;
}
if (maxbsize == 0)
maxbsize = bsize;
if (maxbsize < bsize || !POWEROF2(maxbsize)) {
sblock.fs_maxbsize = sblock.fs_bsize;
printf("Extent size set to %d\n", sblock.fs_maxbsize);
} else if (sblock.fs_maxbsize > FS_MAXCONTIG * sblock.fs_bsize) {
sblock.fs_maxbsize = FS_MAXCONTIG * sblock.fs_bsize;
printf("Extent size reduced to %d\n", sblock.fs_maxbsize);
} else {
sblock.fs_maxbsize = maxbsize;
}
/*
* Maxcontig sets the default for the maximum number of blocks
* that may be allocated sequentially. With file system 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, MAXPHYS / bsize);
sblock.fs_maxcontig = maxcontig;
if (sblock.fs_maxcontig < sblock.fs_maxbsize / sblock.fs_bsize) {
sblock.fs_maxcontig = sblock.fs_maxbsize / sblock.fs_bsize;
printf("Maxcontig raised to %d\n", sblock.fs_maxbsize);
}
if (sblock.fs_maxcontig > 1)
sblock.fs_contigsumsize = MIN(sblock.fs_maxcontig,FS_MAXCONTIG);
sblock.fs_bmask = ~(sblock.fs_bsize - 1);
sblock.fs_fmask = ~(sblock.fs_fsize - 1);
sblock.fs_qbmask = ~sblock.fs_bmask;
sblock.fs_qfmask = ~sblock.fs_fmask;
sblock.fs_bshift = ilog2(sblock.fs_bsize);
sblock.fs_fshift = ilog2(sblock.fs_fsize);
sblock.fs_frag = numfrags(&sblock, sblock.fs_bsize);
sblock.fs_fragshift = ilog2(sblock.fs_frag);
if (sblock.fs_frag > MAXFRAG) {
printf("fragment size %d is still too small (can't happen)\n",
sblock.fs_bsize / MAXFRAG);
exit(21);
}
sblock.fs_fsbtodb = ilog2(sblock.fs_fsize / sectorsize);
sblock.fs_size = fssize = dbtofsb(&sblock, fssize);
sblock.fs_providersize = dbtofsb(&sblock, mediasize / sectorsize);
/*
* Before the filesystem is finally initialized, mark it
* as incompletely initialized.
*/
sblock.fs_magic = FS_BAD_MAGIC;
if (Oflag == 1) {
sblock.fs_sblockloc = SBLOCK_UFS1;
sblock.fs_nindir = sblock.fs_bsize / sizeof(ufs1_daddr_t);
sblock.fs_inopb = sblock.fs_bsize / sizeof(struct ufs1_dinode);
sblock.fs_maxsymlinklen = ((NDADDR + NIADDR) *
sizeof(ufs1_daddr_t));
sblock.fs_old_inodefmt = FS_44INODEFMT;
sblock.fs_old_cgoffset = 0;
sblock.fs_old_cgmask = 0xffffffff;
sblock.fs_old_size = sblock.fs_size;
sblock.fs_old_rotdelay = 0;
sblock.fs_old_rps = 60;
sblock.fs_old_nspf = sblock.fs_fsize / sectorsize;
sblock.fs_old_cpg = 1;
sblock.fs_old_interleave = 1;
sblock.fs_old_trackskew = 0;
sblock.fs_old_cpc = 0;
sblock.fs_old_postblformat = 1;
sblock.fs_old_nrpos = 1;
} else {
sblock.fs_sblockloc = SBLOCK_UFS2;
sblock.fs_nindir = sblock.fs_bsize / sizeof(ufs2_daddr_t);
sblock.fs_inopb = sblock.fs_bsize / sizeof(struct ufs2_dinode);
sblock.fs_maxsymlinklen = ((NDADDR + NIADDR) *
sizeof(ufs2_daddr_t));
}
sblock.fs_sblkno =
roundup(howmany(sblock.fs_sblockloc + SBLOCKSIZE, sblock.fs_fsize),
sblock.fs_frag);
sblock.fs_cblkno = sblock.fs_sblkno +
roundup(howmany(SBLOCKSIZE, sblock.fs_fsize), sblock.fs_frag);
sblock.fs_iblkno = sblock.fs_cblkno + sblock.fs_frag;
sblock.fs_maxfilesize = sblock.fs_bsize * NDADDR - 1;
for (sizepb = sblock.fs_bsize, i = 0; i < NIADDR; i++) {
sizepb *= NINDIR(&sblock);
sblock.fs_maxfilesize += sizepb;
}
/*
* It's impossible to create a snapshot in case that fs_maxfilesize
* is smaller than the fssize.
*/
if (sblock.fs_maxfilesize < (u_quad_t)fssize) {
warnx("WARNING: You will be unable to create snapshots on this "
"file system. Correct by using a larger blocksize.");
}
/*
* Calculate the number of blocks to put into each cylinder group.
*
* This algorithm selects the number of blocks per cylinder
* group. The first goal is to have at least enough data blocks
* in each cylinder group to meet the density requirement. Once
* this goal is achieved we try to expand to have at least
* MINCYLGRPS cylinder groups. Once this goal is achieved, we
* pack as many blocks into each cylinder group map as will fit.
*
* We start by calculating the smallest number of blocks that we
* can put into each cylinder group. If this is too big, we reduce
* the density until it fits.
*/
maxinum = (((int64_t)(1)) << 32) - INOPB(&sblock);
minfragsperinode = 1 + fssize / maxinum;
if (density == 0) {
density = MAX(NFPI, minfragsperinode) * fsize;
} else if (density < minfragsperinode * fsize) {
origdensity = density;
density = minfragsperinode * fsize;
fprintf(stderr, "density increased from %d to %d\n",
origdensity, density);
}
origdensity = density;
for (;;) {
fragsperinode = MAX(numfrags(&sblock, density), 1);
if (fragsperinode < minfragsperinode) {
bsize <<= 1;
fsize <<= 1;
printf("Block size too small for a file system %s %d\n",
"of this size. Increasing blocksize to", bsize);
goto restart;
}
minfpg = fragsperinode * INOPB(&sblock);
if (minfpg > sblock.fs_size)
minfpg = sblock.fs_size;
sblock.fs_ipg = INOPB(&sblock);
sblock.fs_fpg = roundup(sblock.fs_iblkno +
sblock.fs_ipg / INOPF(&sblock), sblock.fs_frag);
if (sblock.fs_fpg < minfpg)
sblock.fs_fpg = minfpg;
sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode),
INOPB(&sblock));
sblock.fs_fpg = roundup(sblock.fs_iblkno +
sblock.fs_ipg / INOPF(&sblock), sblock.fs_frag);
if (sblock.fs_fpg < minfpg)
sblock.fs_fpg = minfpg;
sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode),
INOPB(&sblock));
if (CGSIZE(&sblock) < (unsigned long)sblock.fs_bsize)
break;
density -= sblock.fs_fsize;
}
if (density != origdensity)
printf("density reduced from %d to %d\n", origdensity, density);
/*
* Start packing more blocks into the cylinder group until
* it cannot grow any larger, the number of cylinder groups
* drops below MINCYLGRPS, or we reach the size requested.
* For UFS1 inodes per cylinder group are stored in an int16_t
* so fs_ipg is limited to 2^15 - 1.
*/
for ( ; sblock.fs_fpg < maxblkspercg; sblock.fs_fpg += sblock.fs_frag) {
sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode),
INOPB(&sblock));
if (Oflag > 1 || (Oflag == 1 && sblock.fs_ipg <= 0x7fff)) {
if (sblock.fs_size / sblock.fs_fpg < MINCYLGRPS)
break;
if (CGSIZE(&sblock) < (unsigned long)sblock.fs_bsize)
continue;
if (CGSIZE(&sblock) == (unsigned long)sblock.fs_bsize)
break;
}
sblock.fs_fpg -= sblock.fs_frag;
sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode),
INOPB(&sblock));
break;
}
/*
* Check to be sure that the last cylinder group has enough blocks
* to be viable. If it is too small, reduce the number of blocks
* per cylinder group which will have the effect of moving more
* blocks into the last cylinder group.
*/
optimalfpg = sblock.fs_fpg;
for (;;) {
sblock.fs_ncg = howmany(sblock.fs_size, sblock.fs_fpg);
lastminfpg = roundup(sblock.fs_iblkno +
sblock.fs_ipg / INOPF(&sblock), sblock.fs_frag);
if (sblock.fs_size < lastminfpg) {
printf("Filesystem size %jd < minimum size of %d\n",
(intmax_t)sblock.fs_size, lastminfpg);
exit(28);
}
if (sblock.fs_size % sblock.fs_fpg >= lastminfpg ||
sblock.fs_size % sblock.fs_fpg == 0)
break;
sblock.fs_fpg -= sblock.fs_frag;
sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode),
INOPB(&sblock));
}
if (optimalfpg != sblock.fs_fpg)
printf("Reduced frags per cylinder group from %d to %d %s\n",
optimalfpg, sblock.fs_fpg, "to enlarge last cyl group");
sblock.fs_cgsize = fragroundup(&sblock, CGSIZE(&sblock));
sblock.fs_dblkno = sblock.fs_iblkno + sblock.fs_ipg / INOPF(&sblock);
if (Oflag == 1) {
sblock.fs_old_spc = sblock.fs_fpg * sblock.fs_old_nspf;
sblock.fs_old_nsect = sblock.fs_old_spc;
sblock.fs_old_npsect = sblock.fs_old_spc;
sblock.fs_old_ncyl = sblock.fs_ncg;
}
/*
* fill in remaining fields of the super block
*/
sblock.fs_csaddr = cgdmin(&sblock, 0);
sblock.fs_cssize =
fragroundup(&sblock, sblock.fs_ncg * sizeof(struct csum));
fscs = (struct csum *)calloc(1, sblock.fs_cssize);
if (fscs == NULL)
errx(31, "calloc failed");
sblock.fs_sbsize = fragroundup(&sblock, sizeof(struct fs));
if (sblock.fs_sbsize > SBLOCKSIZE)
sblock.fs_sbsize = SBLOCKSIZE;
sblock.fs_minfree = minfree;
if (metaspace > 0 && metaspace < sblock.fs_fpg / 2)
sblock.fs_metaspace = blknum(&sblock, metaspace);
else if (metaspace != -1)
/* reserve half of minfree for metadata blocks */
sblock.fs_metaspace = blknum(&sblock,
(sblock.fs_fpg * minfree) / 200);
if (maxbpg == 0)
sblock.fs_maxbpg = MAXBLKPG(sblock.fs_bsize);
else
sblock.fs_maxbpg = maxbpg;
sblock.fs_optim = opt;
sblock.fs_cgrotor = 0;
sblock.fs_pendingblocks = 0;
sblock.fs_pendinginodes = 0;
sblock.fs_fmod = 0;
sblock.fs_ronly = 0;
sblock.fs_state = 0;
sblock.fs_clean = 1;
sblock.fs_id[0] = (long)utime;
sblock.fs_id[1] = newfs_random();
sblock.fs_fsmnt[0] = '\0';
csfrags = howmany(sblock.fs_cssize, sblock.fs_fsize);
sblock.fs_dsize = sblock.fs_size - sblock.fs_sblkno -
sblock.fs_ncg * (sblock.fs_dblkno - sblock.fs_sblkno);
sblock.fs_cstotal.cs_nbfree =
fragstoblks(&sblock, sblock.fs_dsize) -
howmany(csfrags, sblock.fs_frag);
sblock.fs_cstotal.cs_nffree =
fragnum(&sblock, sblock.fs_size) +
(fragnum(&sblock, csfrags) > 0 ?
sblock.fs_frag - fragnum(&sblock, csfrags) : 0);
sblock.fs_cstotal.cs_nifree = sblock.fs_ncg * sblock.fs_ipg - ROOTINO;
sblock.fs_cstotal.cs_ndir = 0;
sblock.fs_dsize -= csfrags;
sblock.fs_time = utime;
if (Oflag == 1) {
sblock.fs_old_time = utime;
sblock.fs_old_dsize = sblock.fs_dsize;
sblock.fs_old_csaddr = sblock.fs_csaddr;
sblock.fs_old_cstotal.cs_ndir = sblock.fs_cstotal.cs_ndir;
sblock.fs_old_cstotal.cs_nbfree = sblock.fs_cstotal.cs_nbfree;
sblock.fs_old_cstotal.cs_nifree = sblock.fs_cstotal.cs_nifree;
sblock.fs_old_cstotal.cs_nffree = sblock.fs_cstotal.cs_nffree;
}
/*
* Dump out summary information about file system.
*/
# define B2MBFACTOR (1 / (1024.0 * 1024.0))
printf("%s: %.1fMB (%jd sectors) block size %d, fragment size %d\n",
fsys, (float)sblock.fs_size * sblock.fs_fsize * B2MBFACTOR,
(intmax_t)fsbtodb(&sblock, sblock.fs_size), sblock.fs_bsize,
sblock.fs_fsize);
printf("\tusing %d cylinder groups of %.2fMB, %d blks, %d inodes.\n",
sblock.fs_ncg, (float)sblock.fs_fpg * sblock.fs_fsize * B2MBFACTOR,
sblock.fs_fpg / sblock.fs_frag, sblock.fs_ipg);
if (sblock.fs_flags & FS_DOSOFTDEP)
printf("\twith soft updates\n");
# undef B2MBFACTOR
if (Eflag && !Nflag) {
printf("Erasing sectors [%jd...%jd]\n",
sblock.fs_sblockloc / disk.d_bsize,
fsbtodb(&sblock, sblock.fs_size) - 1);
berase(&disk, sblock.fs_sblockloc / disk.d_bsize,
sblock.fs_size * sblock.fs_fsize - sblock.fs_sblockloc);
}
/*
* Wipe out old UFS1 superblock(s) if necessary.
*/
if (!Nflag && Oflag != 1) {
i = bread(&disk, part_ofs + SBLOCK_UFS1 / disk.d_bsize, chdummy, SBLOCKSIZE);
if (i == -1)
err(1, "can't read old UFS1 superblock: %s", disk.d_error);
if (fsdummy.fs_magic == FS_UFS1_MAGIC) {
fsdummy.fs_magic = 0;
bwrite(&disk, part_ofs + SBLOCK_UFS1 / disk.d_bsize,
chdummy, SBLOCKSIZE);
for (cg = 0; cg < fsdummy.fs_ncg; cg++) {
if (fsbtodb(&fsdummy, cgsblock(&fsdummy, cg)) > fssize)
break;
bwrite(&disk, part_ofs + fsbtodb(&fsdummy,
cgsblock(&fsdummy, cg)), chdummy, SBLOCKSIZE);
}
}
}
if (!Nflag)
do_sbwrite(&disk);
if (Xflag == 1) {
printf("** Exiting on Xflag 1\n");
exit(0);
}
if (Xflag == 2)
printf("** Leaving BAD MAGIC on Xflag 2\n");
else
sblock.fs_magic = (Oflag != 1) ? FS_UFS2_MAGIC : FS_UFS1_MAGIC;
/*
* Now build the cylinders group blocks and
* then print out indices of cylinder groups.
*/
printf("super-block backups (for fsck -b #) at:\n");
i = 0;
width = charsperline();
/*
* allocate space for superblock, cylinder group map, and
* two sets of inode blocks.
*/
if (sblock.fs_bsize < SBLOCKSIZE)
iobufsize = SBLOCKSIZE + 3 * sblock.fs_bsize;
else
iobufsize = 4 * sblock.fs_bsize;
if ((iobuf = calloc(1, iobufsize)) == 0) {
printf("Cannot allocate I/O buffer\n");
exit(38);
}
/*
* Make a copy of the superblock into the buffer that we will be
* writing out in each cylinder group.
*/
bcopy((char *)&sblock, iobuf, SBLOCKSIZE);
for (cg = 0; cg < sblock.fs_ncg; cg++) {
initcg(cg, utime);
j = snprintf(tmpbuf, sizeof(tmpbuf), " %jd%s",
(intmax_t)fsbtodb(&sblock, cgsblock(&sblock, cg)),
cg < (sblock.fs_ncg-1) ? "," : "");
if (j < 0)
tmpbuf[j = 0] = '\0';
if (i + j >= width) {
printf("\n");
i = 0;
}
i += j;
printf("%s", tmpbuf);
fflush(stdout);
}
printf("\n");
if (Nflag)
exit(0);
/*
* Now construct the initial file system,
* then write out the super-block.
*/
fsinit(utime);
if (Oflag == 1) {
sblock.fs_old_cstotal.cs_ndir = sblock.fs_cstotal.cs_ndir;
sblock.fs_old_cstotal.cs_nbfree = sblock.fs_cstotal.cs_nbfree;
sblock.fs_old_cstotal.cs_nifree = sblock.fs_cstotal.cs_nifree;
sblock.fs_old_cstotal.cs_nffree = sblock.fs_cstotal.cs_nffree;
}
if (Xflag == 3) {
printf("** Exiting on Xflag 3\n");
exit(0);
}
if (!Nflag) {
do_sbwrite(&disk);
/*
* For UFS1 filesystems with a blocksize of 64K, the first
* alternate superblock resides at the location used for
* the default UFS2 superblock. As there is a valid
* superblock at this location, the boot code will use
* it as its first choice. Thus we have to ensure that
* all of its statistcs on usage are correct.
*/
if (Oflag == 1 && sblock.fs_bsize == 65536)
wtfs(fsbtodb(&sblock, cgsblock(&sblock, 0)),
sblock.fs_bsize, (char *)&sblock);
}
for (i = 0; i < sblock.fs_cssize; i += sblock.fs_bsize)
wtfs(fsbtodb(&sblock, sblock.fs_csaddr + numfrags(&sblock, i)),
sblock.fs_cssize - i < sblock.fs_bsize ?
sblock.fs_cssize - i : sblock.fs_bsize,
((char *)fscs) + i);
/*
* Update information about this partition in pack
* label, to that it may be updated on disk.
*/
if (pp != NULL) {
pp->p_fstype = FS_BSDFFS;
pp->p_fsize = sblock.fs_fsize;
pp->p_frag = sblock.fs_frag;
pp->p_cpg = sblock.fs_fpg;
}
}
/*
* Initialize a cylinder group.
*/
void
initcg(int cylno, time_t utime)
{
long blkno, start;
uint i, j, d, dlower, dupper;
ufs2_daddr_t cbase, dmax;
struct ufs1_dinode *dp1;
struct ufs2_dinode *dp2;
struct csum *cs;
/*
* Determine block bounds for cylinder group.
* Allow space for super block summary information in first
* cylinder group.
*/
cbase = cgbase(&sblock, cylno);
dmax = cbase + sblock.fs_fpg;
if (dmax > sblock.fs_size)
dmax = sblock.fs_size;
dlower = cgsblock(&sblock, cylno) - cbase;
dupper = cgdmin(&sblock, cylno) - cbase;
if (cylno == 0)
dupper += howmany(sblock.fs_cssize, sblock.fs_fsize);
cs = &fscs[cylno];
memset(&acg, 0, sblock.fs_cgsize);
acg.cg_time = utime;
acg.cg_magic = CG_MAGIC;
acg.cg_cgx = cylno;
acg.cg_niblk = sblock.fs_ipg;
acg.cg_initediblk = sblock.fs_ipg < 2 * INOPB(&sblock) ?
sblock.fs_ipg : 2 * INOPB(&sblock);
acg.cg_ndblk = dmax - cbase;
if (sblock.fs_contigsumsize > 0)
acg.cg_nclusterblks = acg.cg_ndblk / sblock.fs_frag;
start = &acg.cg_space[0] - (u_char *)(&acg.cg_firstfield);
if (Oflag == 2) {
acg.cg_iusedoff = start;
} else {
acg.cg_old_ncyl = sblock.fs_old_cpg;
acg.cg_old_time = acg.cg_time;
acg.cg_time = 0;
acg.cg_old_niblk = acg.cg_niblk;
acg.cg_niblk = 0;
acg.cg_initediblk = 0;
acg.cg_old_btotoff = start;
acg.cg_old_boff = acg.cg_old_btotoff +
sblock.fs_old_cpg * sizeof(int32_t);
acg.cg_iusedoff = acg.cg_old_boff +
sblock.fs_old_cpg * sizeof(u_int16_t);
}
acg.cg_freeoff = acg.cg_iusedoff + howmany(sblock.fs_ipg, CHAR_BIT);
acg.cg_nextfreeoff = acg.cg_freeoff + howmany(sblock.fs_fpg, CHAR_BIT);
if (sblock.fs_contigsumsize > 0) {
acg.cg_clustersumoff =
roundup(acg.cg_nextfreeoff, sizeof(u_int32_t));
acg.cg_clustersumoff -= sizeof(u_int32_t);
acg.cg_clusteroff = acg.cg_clustersumoff +
(sblock.fs_contigsumsize + 1) * sizeof(u_int32_t);
acg.cg_nextfreeoff = acg.cg_clusteroff +
howmany(fragstoblks(&sblock, sblock.fs_fpg), CHAR_BIT);
}
if (acg.cg_nextfreeoff > (unsigned)sblock.fs_cgsize) {
printf("Panic: cylinder group too big\n");
exit(37);
}
acg.cg_cs.cs_nifree += sblock.fs_ipg;
if (cylno == 0)
for (i = 0; i < (long)ROOTINO; i++) {
setbit(cg_inosused(&acg), i);
acg.cg_cs.cs_nifree--;
}
if (cylno > 0) {
/*
* In cylno 0, beginning space is reserved
* for boot and super blocks.
*/
for (d = 0; d < dlower; d += sblock.fs_frag) {
blkno = d / sblock.fs_frag;
setblock(&sblock, cg_blksfree(&acg), blkno);
if (sblock.fs_contigsumsize > 0)
setbit(cg_clustersfree(&acg), blkno);
acg.cg_cs.cs_nbfree++;
}
}
if ((i = dupper % sblock.fs_frag)) {
acg.cg_frsum[sblock.fs_frag - i]++;
for (d = dupper + sblock.fs_frag - i; dupper < d; dupper++) {
setbit(cg_blksfree(&acg), dupper);
acg.cg_cs.cs_nffree++;
}
}
for (d = dupper; d + sblock.fs_frag <= acg.cg_ndblk;
d += sblock.fs_frag) {
blkno = d / sblock.fs_frag;
setblock(&sblock, cg_blksfree(&acg), blkno);
if (sblock.fs_contigsumsize > 0)
setbit(cg_clustersfree(&acg), blkno);
acg.cg_cs.cs_nbfree++;
}
if (d < acg.cg_ndblk) {
acg.cg_frsum[acg.cg_ndblk - d]++;
for (; d < acg.cg_ndblk; d++) {
setbit(cg_blksfree(&acg), d);
acg.cg_cs.cs_nffree++;
}
}
if (sblock.fs_contigsumsize > 0) {
int32_t *sump = cg_clustersum(&acg);
u_char *mapp = cg_clustersfree(&acg);
int map = *mapp++;
int bit = 1;
int run = 0;
for (i = 0; i < acg.cg_nclusterblks; i++) {
if ((map & bit) != 0)
run++;
else if (run != 0) {
if (run > sblock.fs_contigsumsize)
run = sblock.fs_contigsumsize;
sump[run]++;
run = 0;
}
if ((i & (CHAR_BIT - 1)) != CHAR_BIT - 1)
bit <<= 1;
else {
map = *mapp++;
bit = 1;
}
}
if (run != 0) {
if (run > sblock.fs_contigsumsize)
run = sblock.fs_contigsumsize;
sump[run]++;
}
}
*cs = acg.cg_cs;
/*
* Write out the duplicate super block, the cylinder group map
* and two blocks worth of inodes in a single write.
*/
start = sblock.fs_bsize > SBLOCKSIZE ? sblock.fs_bsize : SBLOCKSIZE;
bcopy((char *)&acg, &iobuf[start], sblock.fs_cgsize);
start += sblock.fs_bsize;
dp1 = (struct ufs1_dinode *)(&iobuf[start]);
dp2 = (struct ufs2_dinode *)(&iobuf[start]);
for (i = 0; i < acg.cg_initediblk; i++) {
if (sblock.fs_magic == FS_UFS1_MAGIC) {
dp1->di_gen = newfs_random();
dp1++;
} else {
dp2->di_gen = newfs_random();
dp2++;
}
}
wtfs(fsbtodb(&sblock, cgsblock(&sblock, cylno)), iobufsize, iobuf);
/*
* For the old file system, we have to initialize all the inodes.
*/
if (Oflag == 1) {
for (i = 2 * sblock.fs_frag;
i < sblock.fs_ipg / INOPF(&sblock);
i += sblock.fs_frag) {
dp1 = (struct ufs1_dinode *)(&iobuf[start]);
for (j = 0; j < INOPB(&sblock); j++) {
dp1->di_gen = newfs_random();
dp1++;
}
wtfs(fsbtodb(&sblock, cgimin(&sblock, cylno) + i),
sblock.fs_bsize, &iobuf[start]);
}
}
}
void
mkfs(struct partition *pp, char *fsys, int fi, int fo, mode_t mfsmode,
uid_t mfsuid, gid_t mfsgid)
{
time_t utime;
quad_t sizepb;
int i, j, width, origdensity, fragsperinode, minfpg, optimalfpg;
int lastminfpg, mincylgrps;
long cylno, csfrags;
char tmpbuf[100]; /* XXX this will break in about 2,500 years */
if ((fsun = calloc(1, sizeof (union fs_u))) == NULL ||
(cgun = calloc(1, sizeof (union cg_u))) == NULL)
err(1, "calloc");
#ifndef STANDALONE
time(&utime);
#endif
if (mfs) {
quad_t sz = (quad_t)fssize * sectorsize;
if (sz > SIZE_T_MAX) {
errno = ENOMEM;
err(12, "mmap");
}
membase = mmap(NULL, sz, PROT_READ|PROT_WRITE,
MAP_ANON|MAP_PRIVATE, -1, (off_t)0);
if (membase == MAP_FAILED)
err(12, "mmap");
madvise(membase, sz, MADV_RANDOM);
}
fsi = fi;
fso = fo;
/*
* Validate the given file system size.
* Verify that its last block can actually be accessed.
*/
if (Oflag <= 1 && fssize > INT_MAX)
errx(13, "preposterous size %lld, max is %d", fssize, INT_MAX);
if (Oflag == 2 && fssize > MAXDISKSIZE)
errx(13, "preposterous size %lld, max is %lld", fssize,
MAXDISKSIZE);
wtfs(fssize - 1, sectorsize, (char *)&sblock);
sblock.fs_postblformat = FS_DYNAMICPOSTBLFMT;
sblock.fs_avgfilesize = avgfilesize;
sblock.fs_avgfpdir = avgfilesperdir;
/*
* Collect and verify the block and fragment sizes.
*/
if (!POWEROF2(bsize)) {
errx(16, "block size must be a power of 2, not %d", bsize);
}
if (!POWEROF2(fsize)) {
errx(17, "fragment size must be a power of 2, not %d",
fsize);
}
if (fsize < sectorsize) {
errx(18, "fragment size %d is too small, minimum is %d",
fsize, sectorsize);
}
if (bsize < MINBSIZE) {
errx(19, "block size %d is too small, minimum is %d",
bsize, MINBSIZE);
}
if (bsize > MAXBSIZE) {
errx(19, "block size %d is too large, maximum is %d",
bsize, MAXBSIZE);
}
if (bsize < fsize) {
errx(20, "block size (%d) cannot be smaller than fragment size (%d)",
bsize, fsize);
}
sblock.fs_bsize = bsize;
sblock.fs_fsize = fsize;
/*
* Calculate the superblock bitmasks and shifts.
*/
sblock.fs_bmask = ~(sblock.fs_bsize - 1);
sblock.fs_fmask = ~(sblock.fs_fsize - 1);
sblock.fs_qbmask = ~sblock.fs_bmask;
sblock.fs_qfmask = ~sblock.fs_fmask;
sblock.fs_bshift = ilog2(sblock.fs_bsize);
sblock.fs_fshift = ilog2(sblock.fs_fsize);
sblock.fs_frag = numfrags(&sblock, sblock.fs_bsize);
if (sblock.fs_frag > MAXFRAG) {
errx(21, "fragment size %d is too small, minimum with block "
"size %d is %d", sblock.fs_fsize, sblock.fs_bsize,
sblock.fs_bsize / MAXFRAG);
}
sblock.fs_fragshift = ilog2(sblock.fs_frag);
sblock.fs_fsbtodb = ilog2(sblock.fs_fsize / sectorsize);
sblock.fs_size = dbtofsb(&sblock, fssize);
sblock.fs_nspf = sblock.fs_fsize / sectorsize;
sblock.fs_maxcontig = 1;
sblock.fs_nrpos = 1;
sblock.fs_cpg = 1;
/*
* Before the file system is fully initialized, mark it as invalid.
*/
sblock.fs_magic = FS_BAD_MAGIC;
/*
* Set the remaining superblock fields. Note that for FFS1, media
* geometry fields are set to fake values. This is for compatibility
* with really ancient kernels that might still inspect these values.
*/
if (Oflag <= 1) {
sblock.fs_sblockloc = SBLOCK_UFS1;
sblock.fs_nindir = sblock.fs_bsize / sizeof(int32_t);
sblock.fs_inopb = sblock.fs_bsize / sizeof(struct ufs1_dinode);
if (Oflag == 0) {
sblock.fs_maxsymlinklen = 0;
sblock.fs_inodefmt = FS_42INODEFMT;
} else {
sblock.fs_maxsymlinklen = MAXSYMLINKLEN_UFS1;
sblock.fs_inodefmt = FS_44INODEFMT;
}
sblock.fs_cgoffset = 0;
sblock.fs_cgmask = 0xffffffff;
sblock.fs_ffs1_size = sblock.fs_size;
sblock.fs_rotdelay = 0;
sblock.fs_rps = 60;
sblock.fs_interleave = 1;
sblock.fs_trackskew = 0;
sblock.fs_cpc = 0;
} else {
sblock.fs_inodefmt = FS_44INODEFMT;
sblock.fs_sblockloc = SBLOCK_UFS2;
sblock.fs_nindir = sblock.fs_bsize / sizeof(int64_t);
sblock.fs_inopb = sblock.fs_bsize / sizeof(struct ufs2_dinode);
sblock.fs_maxsymlinklen = MAXSYMLINKLEN_UFS2;
}
sblock.fs_sblkno =
roundup(howmany(sblock.fs_sblockloc + SBLOCKSIZE, sblock.fs_fsize),
sblock.fs_frag);
sblock.fs_cblkno = (int32_t)(sblock.fs_sblkno +
roundup(howmany(SBSIZE, sblock.fs_fsize), sblock.fs_frag));
sblock.fs_iblkno = sblock.fs_cblkno + sblock.fs_frag;
sblock.fs_maxfilesize = sblock.fs_bsize * NDADDR - 1;
for (sizepb = sblock.fs_bsize, i = 0; i < NIADDR; i++) {
sizepb *= NINDIR(&sblock);
sblock.fs_maxfilesize += sizepb;
}
#ifdef notyet
/*
* It is impossible to create a snapshot in case fs_maxfilesize is
* smaller than fssize.
*/
if (sblock.fs_maxfilesize < (u_quad_t)fssize)
warnx("WARNING: You will be unable to create snapshots on this "
"file system. Correct by using a larger blocksize.");
#endif
/*
* Calculate the number of blocks to put into each cylinder group. The
* first goal is to have at least enough data blocks in each cylinder
* group to meet the density requirement. Once this goal is achieved
* we try to expand to have at least mincylgrps cylinder groups. Once
* this goal is achieved, we pack as many blocks into each cylinder
* group map as will fit.
*
* We start by calculating the smallest number of blocks that we can
* put into each cylinder group. If this is too big, we reduce the
* density until it fits.
*/
origdensity = density;
for (;;) {
fragsperinode = MAX(numfrags(&sblock, density), 1);
minfpg = fragsperinode * INOPB(&sblock);
if (minfpg > sblock.fs_size)
minfpg = sblock.fs_size;
sblock.fs_ipg = INOPB(&sblock);
sblock.fs_fpg = roundup(sblock.fs_iblkno +
sblock.fs_ipg / INOPF(&sblock), sblock.fs_frag);
if (sblock.fs_fpg < minfpg)
sblock.fs_fpg = minfpg;
sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode),
INOPB(&sblock));
sblock.fs_fpg = roundup(sblock.fs_iblkno +
sblock.fs_ipg / INOPF(&sblock), sblock.fs_frag);
if (sblock.fs_fpg < minfpg)
sblock.fs_fpg = minfpg;
sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode),
INOPB(&sblock));
if (CGSIZE(&sblock) < (unsigned long)sblock.fs_bsize)
break;
density -= sblock.fs_fsize;
}
if (density != origdensity)
warnx("density reduced from %d to %d bytes per inode",
origdensity, density);
/*
* Use a lower value for mincylgrps if the user specified a large
* number of blocks per cylinder group. This is needed for, e.g. the
* install media which needs to pack 2 files very tightly.
*/
mincylgrps = MINCYLGRPS;
if (maxfrgspercg != INT_MAX) {
i = sblock.fs_size / maxfrgspercg;
if (i < MINCYLGRPS)
mincylgrps = i <= 0 ? 1 : i;
}
/*
* Start packing more blocks into the cylinder group until it cannot
* grow any larger, the number of cylinder groups drops below
* mincylgrps, or we reach the requested size.
*/
for (;;) {
sblock.fs_fpg += sblock.fs_frag;
sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode),
INOPB(&sblock));
if (sblock.fs_fpg > maxfrgspercg ||
sblock.fs_size / sblock.fs_fpg < mincylgrps ||
CGSIZE(&sblock) > (unsigned long)sblock.fs_bsize)
break;
}
sblock.fs_fpg -= sblock.fs_frag;
sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode),
INOPB(&sblock));
if (sblock.fs_fpg > maxfrgspercg)
warnx("can't honour -c: minimum is %d", sblock.fs_fpg);
/*
* Check to be sure that the last cylinder group has enough blocks to
* be viable. If it is too small, reduce the number of blocks per
* cylinder group which will have the effect of moving more blocks into
* the last cylinder group.
*/
optimalfpg = sblock.fs_fpg;
for (;;) {
sblock.fs_ncg = howmany(sblock.fs_size, sblock.fs_fpg);
lastminfpg = roundup(sblock.fs_iblkno +
sblock.fs_ipg / INOPF(&sblock), sblock.fs_frag);
if (sblock.fs_size < lastminfpg)
errx(28, "file system size %jd < minimum size of %d",
(intmax_t)sblock.fs_size, lastminfpg);
if (sblock.fs_size % sblock.fs_fpg >= lastminfpg ||
sblock.fs_size % sblock.fs_fpg == 0)
break;
sblock.fs_fpg -= sblock.fs_frag;
sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode),
INOPB(&sblock));
}
if (optimalfpg != sblock.fs_fpg)
warnx("reduced number of fragments per cylinder group from %d"
" to %d to enlarge last cylinder group", optimalfpg,
sblock.fs_fpg);
/*
* Back to filling superblock fields.
*/
if (Oflag <= 1) {
sblock.fs_spc = sblock.fs_fpg * sblock.fs_nspf;
sblock.fs_nsect = sblock.fs_spc;
sblock.fs_npsect = sblock.fs_spc;
sblock.fs_ncyl = sblock.fs_ncg;
}
sblock.fs_cgsize = fragroundup(&sblock, CGSIZE(&sblock));
sblock.fs_dblkno = sblock.fs_iblkno + sblock.fs_ipg / INOPF(&sblock);
sblock.fs_csaddr = cgdmin(&sblock, 0);
sblock.fs_cssize =
fragroundup(&sblock, sblock.fs_ncg * sizeof(struct csum));
fscs = (struct csum *)calloc(1, sblock.fs_cssize);
if (fscs == NULL)
errx(31, "calloc failed");
sblock.fs_sbsize = fragroundup(&sblock, sizeof(struct fs));
if (sblock.fs_sbsize > SBLOCKSIZE)
sblock.fs_sbsize = SBLOCKSIZE;
sblock.fs_minfree = minfree;
sblock.fs_maxbpg = maxbpg;
sblock.fs_optim = opt;
sblock.fs_cgrotor = 0;
sblock.fs_pendingblocks = 0;
sblock.fs_pendinginodes = 0;
sblock.fs_fmod = 0;
sblock.fs_ronly = 0;
sblock.fs_state = 0;
sblock.fs_clean = 1;
sblock.fs_id[0] = (u_int32_t)utime;
sblock.fs_id[1] = (u_int32_t)arc4random();
sblock.fs_fsmnt[0] = '\0';
csfrags = howmany(sblock.fs_cssize, sblock.fs_fsize);
sblock.fs_dsize = sblock.fs_size - sblock.fs_sblkno -
sblock.fs_ncg * (sblock.fs_dblkno - sblock.fs_sblkno);
sblock.fs_cstotal.cs_nbfree = fragstoblks(&sblock, sblock.fs_dsize) -
howmany(csfrags, sblock.fs_frag);
sblock.fs_cstotal.cs_nffree = fragnum(&sblock, sblock.fs_size) +
(fragnum(&sblock, csfrags) > 0 ?
sblock.fs_frag - fragnum(&sblock, csfrags) : 0);
sblock.fs_cstotal.cs_nifree = sblock.fs_ncg * sblock.fs_ipg - ROOTINO;
sblock.fs_cstotal.cs_ndir = 0;
sblock.fs_dsize -= csfrags;
sblock.fs_time = utime;
if (Oflag <= 1) {
sblock.fs_ffs1_time = sblock.fs_time;
sblock.fs_ffs1_dsize = sblock.fs_dsize;
sblock.fs_ffs1_csaddr = sblock.fs_csaddr;
sblock.fs_ffs1_cstotal.cs_ndir = sblock.fs_cstotal.cs_ndir;
sblock.fs_ffs1_cstotal.cs_nbfree = sblock.fs_cstotal.cs_nbfree;
sblock.fs_ffs1_cstotal.cs_nifree = sblock.fs_cstotal.cs_nifree;
sblock.fs_ffs1_cstotal.cs_nffree = sblock.fs_cstotal.cs_nffree;
}
/*
* Dump out summary information about file system.
*/
if (!mfs) {
#define B2MBFACTOR (1 / (1024.0 * 1024.0))
printf("%s: %.1fMB in %jd sectors of %d bytes\n", fsys,
(float)sblock.fs_size * sblock.fs_fsize * B2MBFACTOR,
(intmax_t)fsbtodb(&sblock, sblock.fs_size), sectorsize);
printf("%d cylinder groups of %.2fMB, %d blocks, %d"
" inodes each\n", sblock.fs_ncg,
(float)sblock.fs_fpg * sblock.fs_fsize * B2MBFACTOR,
sblock.fs_fpg / sblock.fs_frag, sblock.fs_ipg);
#undef B2MBFACTOR
}
/*
* Wipe out old FFS1 superblock if necessary.
*/
if (Oflag >= 2) {
union fs_u *fsun1;
struct fs *fs1;
fsun1 = calloc(1, sizeof(union fs_u));
if (fsun1 == NULL)
err(39, "calloc");
fs1 = &fsun1->fs;
rdfs(SBLOCK_UFS1 / sectorsize, SBSIZE, (char *)fs1);
if (fs1->fs_magic == FS_UFS1_MAGIC) {
fs1->fs_magic = FS_BAD_MAGIC;
wtfs(SBLOCK_UFS1 / sectorsize, SBSIZE, (char *)fs1);
}
free(fsun1);
}
wtfs((int)sblock.fs_sblockloc / sectorsize, SBSIZE, (char *)&sblock);
sblock.fs_magic = (Oflag <= 1) ? FS_UFS1_MAGIC : FS_UFS2_MAGIC;
/*
* Now build the cylinders group blocks and
* then print out indices of cylinder groups.
*/
if (!quiet)
printf("super-block backups (for fsck -b #) at:\n");
#ifndef STANDALONE
else if (!mfs && isatty(STDIN_FILENO)) {
signal(SIGINFO, siginfo);
cur_fsys = fsys;
}
#endif
i = 0;
width = charsperline();
/*
* Allocate space for superblock, cylinder group map, and two sets of
* inode blocks.
*/
if (sblock.fs_bsize < SBLOCKSIZE)
iobufsize = SBLOCKSIZE + 3 * sblock.fs_bsize;
else
iobufsize = 4 * sblock.fs_bsize;
if ((iobuf = malloc(iobufsize)) == 0)
errx(38, "cannot allocate I/O buffer");
bzero(iobuf, iobufsize);
/*
* Make a copy of the superblock into the buffer that we will be
* writing out in each cylinder group.
*/
bcopy((char *)&sblock, iobuf, SBLOCKSIZE);
for (cylno = 0; cylno < sblock.fs_ncg; cylno++) {
cur_cylno = (sig_atomic_t)cylno;
initcg(cylno, utime);
if (quiet)
continue;
j = snprintf(tmpbuf, sizeof tmpbuf, " %lld,",
fsbtodb(&sblock, cgsblock(&sblock, cylno)));
if (j >= sizeof tmpbuf)
j = sizeof tmpbuf - 1;
if (j == -1 || i+j >= width) {
printf("\n");
i = 0;
}
i += j;
printf("%s", tmpbuf);
fflush(stdout);
}
if (!quiet)
printf("\n");
if (Nflag && !mfs)
exit(0);
/*
* Now construct the initial file system, then write out the superblock.
*/
if (Oflag <= 1) {
if (fsinit1(utime, mfsmode, mfsuid, mfsgid))
errx(32, "fsinit1 failed");
sblock.fs_ffs1_cstotal.cs_ndir = sblock.fs_cstotal.cs_ndir;
sblock.fs_ffs1_cstotal.cs_nbfree = sblock.fs_cstotal.cs_nbfree;
sblock.fs_ffs1_cstotal.cs_nifree = sblock.fs_cstotal.cs_nifree;
sblock.fs_ffs1_cstotal.cs_nffree = sblock.fs_cstotal.cs_nffree;
} else {
if (fsinit2(utime))
errx(32, "fsinit2 failed");
}
wtfs((int)sblock.fs_sblockloc / sectorsize, SBSIZE, (char *)&sblock);
for (i = 0; i < sblock.fs_cssize; i += sblock.fs_bsize)
wtfs(fsbtodb(&sblock, sblock.fs_csaddr + numfrags(&sblock, i)),
sblock.fs_cssize - i < sblock.fs_bsize ?
sblock.fs_cssize - i : sblock.fs_bsize,
((char *)fscs) + i);
/*
* Update information about this partion in pack label, to that it may
* be updated on disk.
*/
pp->p_fstype = FS_BSDFFS;
pp->p_fragblock =
DISKLABELV1_FFS_FRAGBLOCK(sblock.fs_fsize, sblock.fs_frag);
pp->p_cpg = sblock.fs_cpg;
}
/*
* Find a suitable location for the journal in the filesystem.
*
* Our strategy here is to look for a contiguous block of free space
* at least "logfile" MB in size (plus room for any indirect blocks).
* We start at the middle of the filesystem and check each cylinder
* group working outwards. If "logfile" MB is not available as a
* single contigous chunk, then return the address and size of the
* largest chunk found.
*
* XXX
* At what stage does the search fail? Is if the largest space we could
* find is less than a quarter the requested space reasonable? If the
* search fails entirely, return a block address if "0" it indicate this.
*/
void
wapbl_find_log_start(struct mount *mp, struct vnode *vp, off_t logsize,
daddr_t *addr, daddr_t *indir_addr, size_t *size)
{
struct ufsmount *ump = VFSTOUFS(mp);
struct fs *fs = ump->um_fs;
struct vnode *devvp = ump->um_devvp;
struct cg *cgp;
struct buf *bp;
uint8_t *blksfree;
daddr_t blkno, best_addr, start_addr;
daddr_t desired_blks, min_desired_blks;
daddr_t freeblks, best_blks;
int bpcg, cg, error, fixedsize, indir_blks, n, s;
#ifdef FFS_EI
const int needswap = UFS_FSNEEDSWAP(fs);
#endif
if (logsize == 0) {
fixedsize = 0; /* We can adjust the size if tight */
logsize = lfragtosize(fs, fs->fs_dsize) /
UFS_WAPBL_JOURNAL_SCALE;
DPRINTF("suggested log size = %lld\n", logsize);
logsize = max(logsize, UFS_WAPBL_MIN_JOURNAL_SIZE);
logsize = min(logsize, UFS_WAPBL_MAX_JOURNAL_SIZE);
DPRINTF("adjusted log size = %lld\n", logsize);
} else {
fixedsize = 1;
DPRINTF("fixed log size = %lld\n", logsize);
}
desired_blks = logsize / fs->fs_bsize;
DPRINTF("desired blocks = %lld\n", desired_blks);
/* add in number of indirect blocks needed */
indir_blks = 0;
if (desired_blks >= NDADDR) {
struct indir indirs[NIADDR + 2];
int num;
error = ufs_getlbns(vp, desired_blks, indirs, &num);
if (error) {
printf("%s: ufs_getlbns failed, error %d!\n",
__func__, error);
goto bad;
}
switch (num) {
case 2:
indir_blks = 1; /* 1st level indirect */
break;
case 3:
indir_blks = 1 + /* 1st level indirect */
1 + /* 2nd level indirect */
indirs[1].in_off + 1; /* extra 1st level indirect */
break;
default:
printf("%s: unexpected numlevels %d from ufs_getlbns\n",
__func__, num);
*size = 0;
goto bad;
}
desired_blks += indir_blks;
}
DPRINTF("desired blocks = %lld (including indirect)\n",
desired_blks);
/*
* If a specific size wasn't requested, allow for a smaller log
* if we're really tight for space...
*/
min_desired_blks = desired_blks;
if (!fixedsize)
min_desired_blks = desired_blks / 4;
/* Look at number of blocks per CG. If it's too small, bail early. */
bpcg = fragstoblks(fs, fs->fs_fpg);
if (min_desired_blks > bpcg) {
printf("ffs_wapbl: cylinder group size of %lld MB "
" is not big enough for journal\n",
lblktosize(fs, bpcg) / (1024 * 1024));
goto bad;
}
/*
* Start with the middle cylinder group, and search outwards in
* both directions until we either find the requested log size
* or reach the start/end of the file system. If we reach the
* start/end without finding enough space for the full requested
* log size, use the largest extent found if it is large enough
* to satisfy the our minimum size.
*
* XXX
* Can we just use the cluster contigsum stuff (esp on UFS2)
* here to simplify this search code?
*/
best_addr = 0;
best_blks = 0;
for (cg = fs->fs_ncg / 2, s = 0, n = 1;
best_blks < desired_blks && cg >= 0 && cg < fs->fs_ncg;
s++, n = -n, cg += n * s) {
DPRINTF("check cg %d of %d\n", cg, fs->fs_ncg);
error = bread(devvp, fsbtodb(fs, cgtod(fs, cg)),
fs->fs_cgsize, &bp);
if (error) {
continue;
}
cgp = (struct cg *)bp->b_data;
if (!cg_chkmagic(cgp)) {
brelse(bp);
continue;
}
blksfree = cg_blksfree(cgp);
for (blkno = 0; blkno < bpcg;) {
/* look for next free block */
/* XXX use scanc() and fragtbl[] here? */
for (; blkno < bpcg - min_desired_blks; blkno++)
if (ffs_isblock(fs, blksfree, blkno))
break;
/* past end of search space in this CG? */
if (blkno >= bpcg - min_desired_blks)
break;
/* count how many free blocks in this extent */
start_addr = blkno;
for (freeblks = 0; blkno < bpcg; blkno++, freeblks++)
if (!ffs_isblock(fs, blksfree, blkno))
break;
if (freeblks > best_blks) {
best_blks = freeblks;
best_addr = blkstofrags(fs, start_addr) +
cgbase(fs, cg);
if (freeblks >= desired_blks) {
DPRINTF("found len %lld"
" at offset %lld in gc\n",
freeblks, start_addr);
break;
}
}
}
brelse(bp);
}
DPRINTF("best found len = %lld, wanted %lld"
" at addr %lld\n", best_blks, desired_blks, best_addr);
if (best_blks < min_desired_blks) {
*addr = 0;
*indir_addr = 0;
} else {
/* put indirect blocks at start, and data blocks after */
*addr = best_addr + blkstofrags(fs, indir_blks);
*indir_addr = best_addr;
}
*size = min(desired_blks, best_blks) - indir_blks;
return;
bad:
*addr = 0;
*indir_addr = 0;
*size = 0;
return;
}
/*
* Free a block or fragment.
*
* The specified block or fragment is placed back in the
* free map. If a fragment is deallocated, a possible
* block reassembly is checked.
*/
void
ffs_blkfree(struct inode *ip, daddr_t bno, long size)
{
struct cg *cgp;
struct buf *bp;
int32_t fragno, cgbno;
int i, error, cg, blk, frags, bbase;
struct fs *fs = ip->i_fs;
const int needswap = UFS_FSNEEDSWAP(fs);
if (size > fs->fs_bsize || fragoff(fs, size) != 0 ||
fragnum(fs, bno) + numfrags(fs, size) > fs->fs_frag) {
errx(1, "blkfree: bad size: bno %lld bsize %d size %ld",
(long long)bno, fs->fs_bsize, size);
}
cg = dtog(fs, bno);
if (bno >= fs->fs_size) {
warnx("bad block %lld, ino %ju", (long long)bno,
(uintmax_t)ip->i_number);
return;
}
error = bread(ip->i_fd, ip->i_fs, fsbtodb(fs, cgtod(fs, cg)),
(int)fs->fs_cgsize, &bp);
if (error) {
brelse(bp);
return;
}
cgp = (struct cg *)bp->b_data;
if (!cg_chkmagic_swap(cgp, needswap)) {
brelse(bp);
return;
}
cgbno = dtogd(fs, bno);
if (size == fs->fs_bsize) {
fragno = fragstoblks(fs, cgbno);
if (!ffs_isfreeblock(fs, cg_blksfree_swap(cgp, needswap), fragno)) {
errx(1, "blkfree: freeing free block %lld",
(long long)bno);
}
ffs_setblock(fs, cg_blksfree_swap(cgp, needswap), fragno);
ffs_clusteracct(fs, cgp, fragno, 1);
ufs_add32(cgp->cg_cs.cs_nbfree, 1, needswap);
fs->fs_cstotal.cs_nbfree++;
fs->fs_cs(fs, cg).cs_nbfree++;
} else {
bbase = cgbno - fragnum(fs, cgbno);
/*
* decrement the counts associated with the old frags
*/
blk = blkmap(fs, cg_blksfree_swap(cgp, needswap), bbase);
ffs_fragacct_swap(fs, blk, cgp->cg_frsum, -1, needswap);
/*
* deallocate the fragment
*/
frags = numfrags(fs, size);
for (i = 0; i < frags; i++) {
if (isset(cg_blksfree_swap(cgp, needswap), cgbno + i)) {
errx(1, "blkfree: freeing free frag: block %lld",
(long long)(cgbno + i));
}
setbit(cg_blksfree_swap(cgp, needswap), cgbno + i);
}
ufs_add32(cgp->cg_cs.cs_nffree, i, needswap);
fs->fs_cstotal.cs_nffree += i;
fs->fs_cs(fs, cg).cs_nffree += i;
/*
* add back in counts associated with the new frags
*/
blk = blkmap(fs, cg_blksfree_swap(cgp, needswap), bbase);
ffs_fragacct_swap(fs, blk, cgp->cg_frsum, 1, needswap);
/*
* if a complete block has been reassembled, account for it
*/
fragno = fragstoblks(fs, bbase);
if (ffs_isblock(fs, cg_blksfree_swap(cgp, needswap), fragno)) {
ufs_add32(cgp->cg_cs.cs_nffree, -fs->fs_frag, needswap);
fs->fs_cstotal.cs_nffree -= fs->fs_frag;
fs->fs_cs(fs, cg).cs_nffree -= fs->fs_frag;
ffs_clusteracct(fs, cgp, fragno, 1);
ufs_add32(cgp->cg_cs.cs_nbfree, 1, needswap);
fs->fs_cstotal.cs_nbfree++;
fs->fs_cs(fs, cg).cs_nbfree++;
}
}
fs->fs_fmod = 1;
bdwrite(bp);
}
/*
* Verify cylinder group's magic number and other parameters. If the
* test fails, offer an option to rebuild the whole cylinder group.
*/
int
check_cgmagic(int cg, struct cg *cgp)
{
/*
* Extended cylinder group checks.
*/
if (cg_chkmagic(cgp) &&
((sblock.fs_magic == FS_UFS1_MAGIC &&
cgp->cg_old_niblk == sblock.fs_ipg &&
cgp->cg_ndblk <= sblock.fs_fpg &&
cgp->cg_old_ncyl <= sblock.fs_old_cpg) ||
(sblock.fs_magic == FS_UFS2_MAGIC &&
cgp->cg_niblk == sblock.fs_ipg &&
cgp->cg_ndblk <= sblock.fs_fpg &&
cgp->cg_initediblk <= sblock.fs_ipg))) {
return (1);
}
pfatal("CYLINDER GROUP %d: BAD MAGIC NUMBER", cg);
if (!reply("REBUILD CYLINDER GROUP")) {
printf("YOU WILL NEED TO RERUN FSCK.\n");
rerun = 1;
return (1);
}
/*
* Zero out the cylinder group and then initialize critical fields.
* Bit maps and summaries will be recalculated by later passes.
*/
memset(cgp, 0, (size_t)sblock.fs_cgsize);
cgp->cg_magic = CG_MAGIC;
cgp->cg_cgx = cg;
cgp->cg_niblk = sblock.fs_ipg;
cgp->cg_initediblk = sblock.fs_ipg < 2 * INOPB(&sblock) ?
sblock.fs_ipg : 2 * INOPB(&sblock);
if (cgbase(&sblock, cg) + sblock.fs_fpg < sblock.fs_size)
cgp->cg_ndblk = sblock.fs_fpg;
else
cgp->cg_ndblk = sblock.fs_size - cgbase(&sblock, cg);
cgp->cg_iusedoff = &cgp->cg_space[0] - (u_char *)(&cgp->cg_firstfield);
if (sblock.fs_magic == FS_UFS1_MAGIC) {
cgp->cg_niblk = 0;
cgp->cg_initediblk = 0;
cgp->cg_old_ncyl = sblock.fs_old_cpg;
cgp->cg_old_niblk = sblock.fs_ipg;
cgp->cg_old_btotoff = cgp->cg_iusedoff;
cgp->cg_old_boff = cgp->cg_old_btotoff +
sblock.fs_old_cpg * sizeof(int32_t);
cgp->cg_iusedoff = cgp->cg_old_boff +
sblock.fs_old_cpg * sizeof(u_int16_t);
}
cgp->cg_freeoff = cgp->cg_iusedoff + howmany(sblock.fs_ipg, CHAR_BIT);
cgp->cg_nextfreeoff = cgp->cg_freeoff + howmany(sblock.fs_fpg,CHAR_BIT);
if (sblock.fs_contigsumsize > 0) {
cgp->cg_nclusterblks = cgp->cg_ndblk / sblock.fs_frag;
cgp->cg_clustersumoff =
roundup(cgp->cg_nextfreeoff, sizeof(u_int32_t));
cgp->cg_clustersumoff -= sizeof(u_int32_t);
cgp->cg_clusteroff = cgp->cg_clustersumoff +
(sblock.fs_contigsumsize + 1) * sizeof(u_int32_t);
cgp->cg_nextfreeoff = cgp->cg_clusteroff +
howmany(fragstoblks(&sblock, sblock.fs_fpg), CHAR_BIT);
}
cgdirty();
return (0);
}
void
pass5(void)
{
int c, blk, frags, basesize, sumsize, mapsize, cssize;
int inomapsize, blkmapsize;
struct fs *fs = sblock;
daddr_t dbase, dmax;
daddr_t d;
long i, j, k;
struct csum *cs;
struct csum_total cstotal;
struct inodesc idesc[4];
char buf[MAXBSIZE];
struct cg *newcg = (struct cg *)buf;
struct ocg *ocg = (struct ocg *)buf;
struct cg *cg = cgrp, *ncg;
struct inostat *info;
u_int32_t ncgsize;
inoinfo(WINO)->ino_state = USTATE;
memset(newcg, 0, (size_t)fs->fs_cgsize);
newcg->cg_niblk = fs->fs_ipg;
if (cvtlevel >= 3) {
if (fs->fs_maxcontig < 2 && fs->fs_contigsumsize > 0) {
if (preen)
pwarn("DELETING CLUSTERING MAPS\n");
if (preen || reply("DELETE CLUSTERING MAPS")) {
fs->fs_contigsumsize = 0;
doinglevel1 = 1;
sbdirty();
}
}
if (fs->fs_maxcontig > 1) {
const char *doit = NULL;
if (fs->fs_contigsumsize < 1) {
doit = "CREAT";
} else if (fs->fs_contigsumsize < fs->fs_maxcontig &&
fs->fs_contigsumsize < FS_MAXCONTIG) {
doit = "EXPAND";
}
if (doit) {
i = fs->fs_contigsumsize;
fs->fs_contigsumsize =
MIN(fs->fs_maxcontig, FS_MAXCONTIG);
if (CGSIZE(fs) > fs->fs_bsize) {
pwarn("CANNOT %s CLUSTER MAPS\n", doit);
fs->fs_contigsumsize = i;
} else if (preen ||
reply("CREATE CLUSTER MAPS")) {
if (preen)
pwarn("%sING CLUSTER MAPS\n",
doit);
ncgsize = fragroundup(fs, CGSIZE(fs));
ncg = realloc(cgrp, ncgsize);
if (ncg == NULL)
errexit(
"cannot reallocate cg space");
cg = cgrp = ncg;
fs->fs_cgsize = ncgsize;
doinglevel1 = 1;
sbdirty();
}
}
}
}
basesize = &newcg->cg_space[0] - (u_char *)(&newcg->cg_firstfield);
cssize = (u_char *)&cstotal.cs_spare[0] - (u_char *)&cstotal.cs_ndir;
sumsize = 0;
if (is_ufs2) {
newcg->cg_iusedoff = basesize;
} else {
/*
* We reserve the space for the old rotation summary
* tables for the benefit of old kernels, but do not
* maintain them in modern kernels. In time, they can
* go away.
*/
newcg->cg_old_btotoff = basesize;
newcg->cg_old_boff = newcg->cg_old_btotoff +
fs->fs_old_cpg * sizeof(int32_t);
newcg->cg_iusedoff = newcg->cg_old_boff +
fs->fs_old_cpg * fs->fs_old_nrpos * sizeof(u_int16_t);
memset(&newcg->cg_space[0], 0, newcg->cg_iusedoff - basesize);
}
inomapsize = howmany(fs->fs_ipg, CHAR_BIT);
newcg->cg_freeoff = newcg->cg_iusedoff + inomapsize;
blkmapsize = howmany(fs->fs_fpg, CHAR_BIT);
newcg->cg_nextfreeoff = newcg->cg_freeoff + blkmapsize;
if (fs->fs_contigsumsize > 0) {
newcg->cg_clustersumoff = newcg->cg_nextfreeoff -
sizeof(u_int32_t);
if (isappleufs) {
/* Apple PR2216969 gives rationale for this change.
* I believe they were mistaken, but we need to
* duplicate it for compatibility. -- [email protected]
*/
newcg->cg_clustersumoff += sizeof(u_int32_t);
}
newcg->cg_clustersumoff =
roundup(newcg->cg_clustersumoff, sizeof(u_int32_t));
newcg->cg_clusteroff = newcg->cg_clustersumoff +
(fs->fs_contigsumsize + 1) * sizeof(u_int32_t);
newcg->cg_nextfreeoff = newcg->cg_clusteroff +
howmany(fragstoblks(fs, fs->fs_fpg), CHAR_BIT);
}
newcg->cg_magic = CG_MAGIC;
mapsize = newcg->cg_nextfreeoff - newcg->cg_iusedoff;
if (!is_ufs2 && ((fs->fs_old_flags & FS_FLAGS_UPDATED) == 0)) {
switch ((int)fs->fs_old_postblformat) {
case FS_42POSTBLFMT:
basesize = (char *)(&ocg->cg_btot[0]) -
(char *)(&ocg->cg_firstfield);
sumsize = &ocg->cg_iused[0] - (u_int8_t *)(&ocg->cg_btot[0]);
mapsize = &ocg->cg_free[howmany(fs->fs_fpg, NBBY)] -
(u_char *)&ocg->cg_iused[0];
blkmapsize = howmany(fs->fs_fpg, NBBY);
inomapsize = &ocg->cg_free[0] - (u_char *)&ocg->cg_iused[0];
ocg->cg_magic = CG_MAGIC;
newcg->cg_magic = 0;
break;
case FS_DYNAMICPOSTBLFMT:
sumsize = newcg->cg_iusedoff - newcg->cg_old_btotoff;
break;
default:
errexit("UNKNOWN ROTATIONAL TABLE FORMAT %d",
fs->fs_old_postblformat);
}
}
memset(&idesc[0], 0, sizeof idesc);
for (i = 0; i < 4; i++) {
idesc[i].id_type = ADDR;
if (!is_ufs2 && doinglevel2)
idesc[i].id_fix = FIX;
}
memset(&cstotal, 0, sizeof(struct csum_total));
dmax = blknum(fs, fs->fs_size + fs->fs_frag - 1);
for (d = fs->fs_size; d < dmax; d++)
setbmap(d);
for (c = 0; c < fs->fs_ncg; c++) {
if (got_siginfo) {
fprintf(stderr,
"%s: phase 5: cyl group %d of %d (%d%%)\n",
cdevname(), c, fs->fs_ncg,
c * 100 / fs->fs_ncg);
got_siginfo = 0;
}
#ifdef PROGRESS
progress_bar(cdevname(), preen ? NULL : "phase 5",
c, fs->fs_ncg);
#endif /* PROGRESS */
getblk(&cgblk, cgtod(fs, c), fs->fs_cgsize);
memcpy(cg, cgblk.b_un.b_cg, fs->fs_cgsize);
if((doswap && !needswap) || (!doswap && needswap))
ffs_cg_swap(cgblk.b_un.b_cg, cg, sblock);
if (!doinglevel1 && !cg_chkmagic(cg, 0))
pfatal("CG %d: PASS5: BAD MAGIC NUMBER\n", c);
if(doswap)
cgdirty();
/*
* While we have the disk head where we want it,
* write back the superblock to the spare at this
* cylinder group.
*/
if ((cvtlevel && sblk.b_dirty) || doswap) {
bwrite(fswritefd, sblk.b_un.b_buf,
fsbtodb(sblock, cgsblock(sblock, c)),
sblock->fs_sbsize);
} else {
/*
* Read in the current alternate superblock,
* and compare it to the master. If it's
* wrong, fix it up.
*/
getblk(&asblk, cgsblock(sblock, c), sblock->fs_sbsize);
if (asblk.b_errs)
pfatal("CG %d: UNABLE TO READ ALTERNATE "
"SUPERBLK\n", c);
else {
memmove(altsblock, asblk.b_un.b_fs,
sblock->fs_sbsize);
if (needswap)
ffs_sb_swap(asblk.b_un.b_fs, altsblock);
}
sb_oldfscompat_write(sblock, sblocksave);
if ((asblk.b_errs || cmpsblks(sblock, altsblock)) &&
dofix(&idesc[3],
"ALTERNATE SUPERBLK(S) ARE INCORRECT")) {
bwrite(fswritefd, sblk.b_un.b_buf,
fsbtodb(sblock, cgsblock(sblock, c)),
sblock->fs_sbsize);
}
sb_oldfscompat_read(sblock, 0);
}
dbase = cgbase(fs, c);
dmax = dbase + fs->fs_fpg;
if (dmax > fs->fs_size)
dmax = fs->fs_size;
if (is_ufs2 || (fs->fs_old_flags & FS_FLAGS_UPDATED))
newcg->cg_time = cg->cg_time;
newcg->cg_old_time = cg->cg_old_time;
newcg->cg_cgx = c;
newcg->cg_ndblk = dmax - dbase;
if (!is_ufs2) {
if (c == fs->fs_ncg - 1) {
/* Avoid fighting old fsck for this value. Its never used
* outside of this check anyway.
*/
if ((fs->fs_old_flags & FS_FLAGS_UPDATED) == 0)
newcg->cg_old_ncyl = fs->fs_old_ncyl % fs->fs_old_cpg;
else
newcg->cg_old_ncyl = howmany(newcg->cg_ndblk,
fs->fs_fpg / fs->fs_old_cpg);
} else
newcg->cg_old_ncyl = fs->fs_old_cpg;
newcg->cg_old_niblk = fs->fs_ipg;
newcg->cg_niblk = 0;
}
if (fs->fs_contigsumsize > 0)
newcg->cg_nclusterblks = newcg->cg_ndblk / fs->fs_frag;
newcg->cg_cs.cs_ndir = 0;
newcg->cg_cs.cs_nffree = 0;
newcg->cg_cs.cs_nbfree = 0;
newcg->cg_cs.cs_nifree = fs->fs_ipg;
if (cg->cg_rotor >= 0 && cg->cg_rotor < newcg->cg_ndblk)
newcg->cg_rotor = cg->cg_rotor;
else
newcg->cg_rotor = 0;
if (cg->cg_frotor >= 0 && cg->cg_frotor < newcg->cg_ndblk)
newcg->cg_frotor = cg->cg_frotor;
else
newcg->cg_frotor = 0;
if (cg->cg_irotor >= 0 && cg->cg_irotor < fs->fs_ipg)
newcg->cg_irotor = cg->cg_irotor;
else
newcg->cg_irotor = 0;
if (!is_ufs2) {
newcg->cg_initediblk = 0;
} else {
if ((unsigned)cg->cg_initediblk > fs->fs_ipg)
newcg->cg_initediblk = fs->fs_ipg;
else
newcg->cg_initediblk = cg->cg_initediblk;
}
memset(&newcg->cg_frsum[0], 0, sizeof newcg->cg_frsum);
memset(&old_cg_blktot(newcg, 0)[0], 0, (size_t)(sumsize));
memset(cg_inosused(newcg, 0), 0, (size_t)(mapsize));
if (!is_ufs2 && ((fs->fs_old_flags & FS_FLAGS_UPDATED) == 0) &&
fs->fs_old_postblformat == FS_42POSTBLFMT)
ocg->cg_magic = CG_MAGIC;
j = fs->fs_ipg * c;
for (i = 0; i < fs->fs_ipg; j++, i++) {
info = inoinfo(j);
switch (info->ino_state) {
case USTATE:
break;
case DSTATE:
case DCLEAR:
case DFOUND:
newcg->cg_cs.cs_ndir++;
/* fall through */
case FSTATE:
case FCLEAR:
newcg->cg_cs.cs_nifree--;
setbit(cg_inosused(newcg, 0), i);
break;
default:
if (j < ROOTINO)
break;
errexit("BAD STATE %d FOR INODE I=%ld",
info->ino_state, (long)j);
}
}
if (c == 0)
for (i = 0; i < ROOTINO; i++) {
setbit(cg_inosused(newcg, 0), i);
newcg->cg_cs.cs_nifree--;
}
for (i = 0, d = dbase;
d < dmax;
d += fs->fs_frag, i += fs->fs_frag) {
frags = 0;
for (j = 0; j < fs->fs_frag; j++) {
if (testbmap(d + j))
continue;
setbit(cg_blksfree(newcg, 0), i + j);
frags++;
}
if (frags == fs->fs_frag) {
newcg->cg_cs.cs_nbfree++;
if (sumsize) {
j = old_cbtocylno(fs, i);
old_cg_blktot(newcg, 0)[j]++;
old_cg_blks(fs, newcg, j, 0)[old_cbtorpos(fs, i)]++;
}
if (fs->fs_contigsumsize > 0)
setbit(cg_clustersfree(newcg, 0),
fragstoblks(fs, i));
} else if (frags > 0) {
newcg->cg_cs.cs_nffree += frags;
blk = blkmap(fs, cg_blksfree(newcg, 0), i);
ffs_fragacct(fs, blk, newcg->cg_frsum, 1, 0);
}
}
if (fs->fs_contigsumsize > 0) {
int32_t *sump = cg_clustersum(newcg, 0);
u_char *mapp = cg_clustersfree(newcg, 0);
int map = *mapp++;
int bit = 1;
int run = 0;
for (i = 0; i < newcg->cg_nclusterblks; i++) {
if ((map & bit) != 0) {
run++;
} else if (run != 0) {
if (run > fs->fs_contigsumsize)
run = fs->fs_contigsumsize;
sump[run]++;
run = 0;
}
if ((i & (NBBY - 1)) != (NBBY - 1)) {
bit <<= 1;
} else {
map = *mapp++;
bit = 1;
}
}
if (run != 0) {
if (run > fs->fs_contigsumsize)
run = fs->fs_contigsumsize;
sump[run]++;
}
}
cstotal.cs_nffree += newcg->cg_cs.cs_nffree;
cstotal.cs_nbfree += newcg->cg_cs.cs_nbfree;
cstotal.cs_nifree += newcg->cg_cs.cs_nifree;
cstotal.cs_ndir += newcg->cg_cs.cs_ndir;
cs = &fs->fs_cs(fs, c);
if (memcmp(&newcg->cg_cs, cs, sizeof *cs) != 0) {
if (debug) {
printf("cg %d: nffree: %d/%d nbfree %d/%d"
" nifree %d/%d ndir %d/%d\n",
c, cs->cs_nffree,newcg->cg_cs.cs_nffree,
cs->cs_nbfree,newcg->cg_cs.cs_nbfree,
cs->cs_nifree,newcg->cg_cs.cs_nifree,
cs->cs_ndir,newcg->cg_cs.cs_ndir);
}
if (dofix(&idesc[0], "FREE BLK COUNT(S) WRONG IN SUPERBLK")) {
memmove(cs, &newcg->cg_cs, sizeof *cs);
sbdirty();
} else
markclean = 0;
}
if (doinglevel1) {
memmove(cg, newcg, (size_t)fs->fs_cgsize);
cgdirty();
continue;
}
if ((memcmp(newcg, cg, basesize) != 0) ||
(memcmp(&old_cg_blktot(newcg, 0)[0],
&old_cg_blktot(cg, 0)[0], sumsize) != 0)) {
if (dofix(&idesc[2], "SUMMARY INFORMATION BAD")) {
memmove(cg, newcg, (size_t)basesize);
memmove(&old_cg_blktot(cg, 0)[0],
&old_cg_blktot(newcg, 0)[0], (size_t)sumsize);
cgdirty();
} else
markclean = 0;
}
if (usedsoftdep) {
for (i = 0; i < inomapsize; i++) {
j = cg_inosused(newcg, 0)[i];
if ((cg_inosused(cg, 0)[i] & j) == j)
continue;
for (k = 0; k < NBBY; k++) {
if ((j & (1 << k)) == 0)
continue;
if (cg_inosused(cg, 0)[i] & (1 << k))
continue;
pwarn("ALLOCATED INODE %ld "
"MARKED FREE\n",
c * fs->fs_ipg + i * 8 + k);
}
}
for (i = 0; i < blkmapsize; i++) {
j = cg_blksfree(cg, 0)[i];
if ((cg_blksfree(newcg, 0)[i] & j) == j)
continue;
for (k = 0; k < NBBY; k++) {
if ((j & (1 << k)) == 0)
continue;
if (cg_inosused(cg, 0)[i] & (1 << k))
continue;
pwarn("ALLOCATED FRAG %ld "
"MARKED FREE\n",
c * fs->fs_fpg + i * 8 + k);
}
}
}
if (memcmp(cg_inosused(newcg, 0), cg_inosused(cg, 0), mapsize)
!= 0 && dofix(&idesc[1], "BLK(S) MISSING IN BIT MAPS")) {
memmove(cg_inosused(cg, 0), cg_inosused(newcg, 0),
(size_t)mapsize);
cgdirty();
}
}
if (memcmp(&cstotal, &fs->fs_cstotal, cssize) != 0) {
if (debug) {
printf("total: nffree: %lld/%lld nbfree %lld/%lld"
" nifree %lld/%lld ndir %lld/%lld\n",
(long long int)fs->fs_cstotal.cs_nffree,
(long long int)cstotal.cs_nffree,
(long long int)fs->fs_cstotal.cs_nbfree,
(long long int)cstotal.cs_nbfree,
(long long int)fs->fs_cstotal.cs_nifree,
(long long int)cstotal.cs_nifree,
(long long int)fs->fs_cstotal.cs_ndir,
(long long int)cstotal.cs_ndir);
}
if (dofix(&idesc[0], "FREE BLK COUNT(S) WRONG IN SUPERBLK")) {
memmove(&fs->fs_cstotal, &cstotal, sizeof cstotal);
fs->fs_ronly = 0;
fs->fs_fmod = 0;
sbdirty();
} else
markclean = 0;
}
#ifdef PROGRESS
if (!preen)
progress_done();
#endif /* PROGRESS */
}
void
pass5(void)
{
int c, i, j, blk, frags, basesize, mapsize;
int inomapsize, blkmapsize;
struct fs *fs = &sblock;
ufs2_daddr_t d, dbase, dmax, start;
int rewritecg = 0;
struct csum *cs;
struct csum_total cstotal;
struct inodesc idesc[3];
char buf[MAXBSIZE];
struct cg *cg, *newcg = (struct cg *)buf;
struct bufarea *cgbp;
inoinfo(WINO)->ino_state = USTATE;
memset(newcg, 0, (size_t)fs->fs_cgsize);
newcg->cg_niblk = fs->fs_ipg;
if (cvtlevel >= 3) {
if (fs->fs_maxcontig < 2 && fs->fs_contigsumsize > 0) {
if (preen)
pwarn("DELETING CLUSTERING MAPS\n");
if (preen || reply("DELETE CLUSTERING MAPS")) {
fs->fs_contigsumsize = 0;
rewritecg = 1;
sbdirty();
}
}
if (fs->fs_maxcontig > 1) {
const char *doit = 0;
if (fs->fs_contigsumsize < 1) {
doit = "CREAT";
} else if (fs->fs_contigsumsize < fs->fs_maxcontig &&
fs->fs_contigsumsize < FS_MAXCONTIG) {
doit = "EXPAND";
}
if (doit) {
i = fs->fs_contigsumsize;
fs->fs_contigsumsize =
MIN(fs->fs_maxcontig, FS_MAXCONTIG);
if (CGSIZE(fs) > (u_int)fs->fs_bsize) {
pwarn("CANNOT %s CLUSTER MAPS\n", doit);
fs->fs_contigsumsize = i;
} else if (preen ||
reply("CREATE CLUSTER MAPS")) {
if (preen)
pwarn("%sING CLUSTER MAPS\n",
doit);
fs->fs_cgsize =
fragroundup(fs, CGSIZE(fs));
rewritecg = 1;
sbdirty();
}
}
}
}
basesize = &newcg->cg_space[0] - (u_char *)(&newcg->cg_firstfield);
if (sblock.fs_magic == FS_UFS2_MAGIC) {
newcg->cg_iusedoff = basesize;
} else {
/*
* We reserve the space for the old rotation summary
* tables for the benefit of old kernels, but do not
* maintain them in modern kernels. In time, they can
* go away.
*/
newcg->cg_old_btotoff = basesize;
newcg->cg_old_boff = newcg->cg_old_btotoff +
fs->fs_old_cpg * sizeof(int32_t);
newcg->cg_iusedoff = newcg->cg_old_boff +
fs->fs_old_cpg * fs->fs_old_nrpos * sizeof(u_int16_t);
memset(&newcg->cg_space[0], 0, newcg->cg_iusedoff - basesize);
}
inomapsize = howmany(fs->fs_ipg, CHAR_BIT);
newcg->cg_freeoff = newcg->cg_iusedoff + inomapsize;
blkmapsize = howmany(fs->fs_fpg, CHAR_BIT);
newcg->cg_nextfreeoff = newcg->cg_freeoff + blkmapsize;
if (fs->fs_contigsumsize > 0) {
newcg->cg_clustersumoff = newcg->cg_nextfreeoff -
sizeof(u_int32_t);
newcg->cg_clustersumoff =
roundup(newcg->cg_clustersumoff, sizeof(u_int32_t));
newcg->cg_clusteroff = newcg->cg_clustersumoff +
(fs->fs_contigsumsize + 1) * sizeof(u_int32_t);
newcg->cg_nextfreeoff = newcg->cg_clusteroff +
howmany(fragstoblks(fs, fs->fs_fpg), CHAR_BIT);
}
newcg->cg_magic = CG_MAGIC;
mapsize = newcg->cg_nextfreeoff - newcg->cg_iusedoff;
memset(&idesc[0], 0, sizeof idesc);
for (i = 0; i < 3; i++)
idesc[i].id_type = ADDR;
memset(&cstotal, 0, sizeof(struct csum_total));
dmax = blknum(fs, fs->fs_size + fs->fs_frag - 1);
for (d = fs->fs_size; d < dmax; d++)
setbmap(d);
for (c = 0; c < fs->fs_ncg; c++) {
if (got_siginfo) {
printf("%s: phase 5: cyl group %d of %d (%d%%)\n",
cdevname, c, sblock.fs_ncg,
c * 100 / sblock.fs_ncg);
got_siginfo = 0;
}
if (got_sigalarm) {
setproctitle("%s p5 %d%%", cdevname,
c * 100 / sblock.fs_ncg);
got_sigalarm = 0;
}
cgbp = cgget(c);
cg = cgbp->b_un.b_cg;
if (!cg_chkmagic(cg))
pfatal("CG %d: BAD MAGIC NUMBER\n", c);
newcg->cg_time = cg->cg_time;
newcg->cg_old_time = cg->cg_old_time;
newcg->cg_unrefs = cg->cg_unrefs;
newcg->cg_cgx = c;
dbase = cgbase(fs, c);
dmax = dbase + fs->fs_fpg;
if (dmax > fs->fs_size)
dmax = fs->fs_size;
newcg->cg_ndblk = dmax - dbase;
if (fs->fs_magic == FS_UFS1_MAGIC) {
if (c == fs->fs_ncg - 1)
newcg->cg_old_ncyl = howmany(newcg->cg_ndblk,
fs->fs_fpg / fs->fs_old_cpg);
else
newcg->cg_old_ncyl = fs->fs_old_cpg;
newcg->cg_old_niblk = fs->fs_ipg;
newcg->cg_niblk = 0;
}
if (fs->fs_contigsumsize > 0)
newcg->cg_nclusterblks = newcg->cg_ndblk / fs->fs_frag;
newcg->cg_cs.cs_ndir = 0;
newcg->cg_cs.cs_nffree = 0;
newcg->cg_cs.cs_nbfree = 0;
newcg->cg_cs.cs_nifree = fs->fs_ipg;
if (cg->cg_rotor >= 0 && cg->cg_rotor < newcg->cg_ndblk)
newcg->cg_rotor = cg->cg_rotor;
else
newcg->cg_rotor = 0;
if (cg->cg_frotor >= 0 && cg->cg_frotor < newcg->cg_ndblk)
newcg->cg_frotor = cg->cg_frotor;
else
newcg->cg_frotor = 0;
if (cg->cg_irotor >= 0 && cg->cg_irotor < fs->fs_ipg)
newcg->cg_irotor = cg->cg_irotor;
else
newcg->cg_irotor = 0;
if (fs->fs_magic == FS_UFS1_MAGIC) {
newcg->cg_initediblk = 0;
} else {
if ((unsigned)cg->cg_initediblk > fs->fs_ipg)
newcg->cg_initediblk = fs->fs_ipg;
else
newcg->cg_initediblk = cg->cg_initediblk;
}
memset(&newcg->cg_frsum[0], 0, sizeof newcg->cg_frsum);
memset(cg_inosused(newcg), 0, (size_t)(mapsize));
j = fs->fs_ipg * c;
for (i = 0; i < inostathead[c].il_numalloced; j++, i++) {
switch (inoinfo(j)->ino_state) {
case USTATE:
break;
case DSTATE:
case DCLEAR:
case DFOUND:
case DZLINK:
newcg->cg_cs.cs_ndir++;
/* FALLTHROUGH */
case FSTATE:
case FCLEAR:
case FZLINK:
newcg->cg_cs.cs_nifree--;
setbit(cg_inosused(newcg), i);
break;
default:
if (j < (int)ROOTINO)
break;
errx(EEXIT, "BAD STATE %d FOR INODE I=%d",
inoinfo(j)->ino_state, j);
}
}
if (c == 0)
for (i = 0; i < (int)ROOTINO; i++) {
setbit(cg_inosused(newcg), i);
newcg->cg_cs.cs_nifree--;
}
start = -1;
for (i = 0, d = dbase;
d < dmax;
d += fs->fs_frag, i += fs->fs_frag) {
frags = 0;
for (j = 0; j < fs->fs_frag; j++) {
if (testbmap(d + j)) {
if (Eflag && start != -1) {
clear_blocks(start, d + j - 1);
start = -1;
}
continue;
}
if (start == -1)
start = d + j;
setbit(cg_blksfree(newcg), i + j);
frags++;
}
if (frags == fs->fs_frag) {
newcg->cg_cs.cs_nbfree++;
if (fs->fs_contigsumsize > 0)
setbit(cg_clustersfree(newcg),
i / fs->fs_frag);
} else if (frags > 0) {
newcg->cg_cs.cs_nffree += frags;
blk = blkmap(fs, cg_blksfree(newcg), i);
ffs_fragacct(fs, blk, newcg->cg_frsum, 1);
}
}
if (Eflag && start != -1)
clear_blocks(start, d - 1);
if (fs->fs_contigsumsize > 0) {
int32_t *sump = cg_clustersum(newcg);
u_char *mapp = cg_clustersfree(newcg);
int map = *mapp++;
int bit = 1;
int run = 0;
for (i = 0; i < newcg->cg_nclusterblks; i++) {
if ((map & bit) != 0) {
run++;
} else if (run != 0) {
if (run > fs->fs_contigsumsize)
run = fs->fs_contigsumsize;
sump[run]++;
run = 0;
}
if ((i & (CHAR_BIT - 1)) != (CHAR_BIT - 1)) {
bit <<= 1;
} else {
map = *mapp++;
bit = 1;
}
}
if (run != 0) {
if (run > fs->fs_contigsumsize)
run = fs->fs_contigsumsize;
sump[run]++;
}
}
if (bkgrdflag != 0) {
cstotal.cs_nffree += cg->cg_cs.cs_nffree;
cstotal.cs_nbfree += cg->cg_cs.cs_nbfree;
cstotal.cs_nifree += cg->cg_cs.cs_nifree;
cstotal.cs_ndir += cg->cg_cs.cs_ndir;
} else {
cstotal.cs_nffree += newcg->cg_cs.cs_nffree;
cstotal.cs_nbfree += newcg->cg_cs.cs_nbfree;
cstotal.cs_nifree += newcg->cg_cs.cs_nifree;
cstotal.cs_ndir += newcg->cg_cs.cs_ndir;
}
cs = &fs->fs_cs(fs, c);
if (cursnapshot == 0 &&
memcmp(&newcg->cg_cs, cs, sizeof *cs) != 0 &&
dofix(&idesc[0], "FREE BLK COUNT(S) WRONG IN SUPERBLK")) {
memmove(cs, &newcg->cg_cs, sizeof *cs);
sbdirty();
}
if (rewritecg) {
memmove(cg, newcg, (size_t)fs->fs_cgsize);
dirty(cgbp);
continue;
}
if (cursnapshot == 0 &&
memcmp(newcg, cg, basesize) != 0 &&
dofix(&idesc[2], "SUMMARY INFORMATION BAD")) {
memmove(cg, newcg, (size_t)basesize);
dirty(cgbp);
}
if (bkgrdflag != 0 || usedsoftdep || debug)
update_maps(cg, newcg, bkgrdflag);
if (cursnapshot == 0 &&
memcmp(cg_inosused(newcg), cg_inosused(cg), mapsize) != 0 &&
dofix(&idesc[1], "BLK(S) MISSING IN BIT MAPS")) {
memmove(cg_inosused(cg), cg_inosused(newcg),
(size_t)mapsize);
dirty(cgbp);
}
}
if (cursnapshot == 0 &&
memcmp(&cstotal, &fs->fs_cstotal, sizeof cstotal) != 0
&& dofix(&idesc[0], "SUMMARY BLK COUNT(S) WRONG IN SUPERBLK")) {
memmove(&fs->fs_cstotal, &cstotal, sizeof cstotal);
fs->fs_ronly = 0;
fs->fs_fmod = 0;
sbdirty();
}
/*
* When doing background fsck on a snapshot, figure out whether
* the superblock summary is inaccurate and correct it when
* necessary.
*/
if (cursnapshot != 0) {
cmd.size = 1;
cmd.value = cstotal.cs_ndir - fs->fs_cstotal.cs_ndir;
if (cmd.value != 0) {
if (debug)
printf("adjndir by %+" PRIi64 "\n", cmd.value);
if (bkgrdsumadj == 0 || sysctl(adjndir, MIBSIZE, 0, 0,
&cmd, sizeof cmd) == -1)
rwerror("ADJUST NUMBER OF DIRECTORIES", cmd.value);
}
cmd.value = cstotal.cs_nbfree - fs->fs_cstotal.cs_nbfree;
if (cmd.value != 0) {
if (debug)
printf("adjnbfree by %+" PRIi64 "\n", cmd.value);
if (bkgrdsumadj == 0 || sysctl(adjnbfree, MIBSIZE, 0, 0,
&cmd, sizeof cmd) == -1)
rwerror("ADJUST NUMBER OF FREE BLOCKS", cmd.value);
}
cmd.value = cstotal.cs_nifree - fs->fs_cstotal.cs_nifree;
if (cmd.value != 0) {
if (debug)
printf("adjnifree by %+" PRIi64 "\n", cmd.value);
if (bkgrdsumadj == 0 || sysctl(adjnifree, MIBSIZE, 0, 0,
&cmd, sizeof cmd) == -1)
rwerror("ADJUST NUMBER OF FREE INODES", cmd.value);
}
cmd.value = cstotal.cs_nffree - fs->fs_cstotal.cs_nffree;
if (cmd.value != 0) {
if (debug)
printf("adjnffree by %+" PRIi64 "\n", cmd.value);
if (bkgrdsumadj == 0 || sysctl(adjnffree, MIBSIZE, 0, 0,
&cmd, sizeof cmd) == -1)
rwerror("ADJUST NUMBER OF FREE FRAGS", cmd.value);
}
cmd.value = cstotal.cs_numclusters - fs->fs_cstotal.cs_numclusters;
if (cmd.value != 0) {
if (debug)
printf("adjnumclusters by %+" PRIi64 "\n", cmd.value);
if (bkgrdsumadj == 0 || sysctl(adjnumclusters, MIBSIZE, 0, 0,
&cmd, sizeof cmd) == -1)
rwerror("ADJUST NUMBER OF FREE CLUSTERS", cmd.value);
}
}
}
