/*
* 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;
}
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;
}
}
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;
}
/*
* Here we actually start growing the file system. We basically read the
* cylinder summary from the first cylinder group as we want to update
* this on the fly during our various operations. First we handle the
* changes in the former last cylinder group. Afterwards we create all new
* cylinder groups. Now we handle the cylinder group containing the
* cylinder summary which might result in a relocation of the whole
* structure. In the end we write back the updated cylinder summary, the
* new superblock, and slightly patched versions of the super block
* copies.
*/
static void
growfs(int fsi, int fso, unsigned int Nflag)
{
DBG_FUNC("growfs")
time_t modtime;
uint cylno;
int i, j, width;
char tmpbuf[100];
DBG_ENTER;
time(&modtime);
/*
* Get the cylinder summary into the memory.
*/
fscs = (struct csum *)calloc((size_t)1, (size_t)sblock.fs_cssize);
if (fscs == NULL)
errx(1, "calloc failed");
for (i = 0; i < osblock.fs_cssize; i += osblock.fs_bsize) {
rdfs(fsbtodb(&osblock, osblock.fs_csaddr +
numfrags(&osblock, i)), (size_t)MIN(osblock.fs_cssize - i,
osblock.fs_bsize), (void *)(((char *)fscs) + i), fsi);
}
#ifdef FS_DEBUG
{
struct csum *dbg_csp;
u_int32_t dbg_csc;
char dbg_line[80];
dbg_csp = fscs;
for (dbg_csc = 0; dbg_csc < osblock.fs_ncg; dbg_csc++) {
snprintf(dbg_line, sizeof(dbg_line),
"%d. old csum in old location", dbg_csc);
DBG_DUMP_CSUM(&osblock, dbg_line, dbg_csp++);
}
}
#endif /* FS_DEBUG */
DBG_PRINT0("fscs read\n");
/*
* Do all needed changes in the former last cylinder group.
*/
updjcg(osblock.fs_ncg - 1, modtime, fsi, fso, Nflag);
/*
* Dump out summary information about file system.
*/
#ifdef FS_DEBUG
#define B2MBFACTOR (1 / (1024.0 * 1024.0))
printf("growfs: %.1fMB (%jd sectors) block size %d, fragment size %d\n",
(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
#endif /* FS_DEBUG */
/*
* Now build the cylinders group blocks and
* then print out indices of cylinder groups.
*/
printf("super-block backups (for fsck_ffs -b #) at:\n");
i = 0;
width = charsperline();
/*
* Iterate for only the new cylinder groups.
*/
for (cylno = osblock.fs_ncg; cylno < sblock.fs_ncg; cylno++) {
initcg(cylno, modtime, fso, Nflag);
j = sprintf(tmpbuf, " %jd%s",
(intmax_t)fsbtodb(&sblock, cgsblock(&sblock, cylno)),
cylno < (sblock.fs_ncg - 1) ? "," : "" );
if (i + j >= width) {
printf("\n");
i = 0;
}
i += j;
printf("%s", tmpbuf);
fflush(stdout);
}
printf("\n");
/*
* Do all needed changes in the first cylinder group.
* allocate blocks in new location
*/
updcsloc(modtime, fsi, fso, Nflag);
/*
* Now write the cylinder summary back to disk.
*/
for (i = 0; i < sblock.fs_cssize; i += sblock.fs_bsize) {
wtfs(fsbtodb(&sblock, sblock.fs_csaddr + numfrags(&sblock, i)),
(size_t)MIN(sblock.fs_cssize - i, sblock.fs_bsize),
(void *)(((char *)fscs) + i), fso, Nflag);
}
DBG_PRINT0("fscs written\n");
#ifdef FS_DEBUG
{
struct csum *dbg_csp;
u_int32_t dbg_csc;
char dbg_line[80];
dbg_csp = fscs;
for (dbg_csc = 0; dbg_csc < sblock.fs_ncg; dbg_csc++) {
snprintf(dbg_line, sizeof(dbg_line),
"%d. new csum in new location", dbg_csc);
DBG_DUMP_CSUM(&sblock, dbg_line, dbg_csp++);
}
}
#endif /* FS_DEBUG */
/*
* Now write the new superblock back to disk.
*/
sblock.fs_time = modtime;
wtfs(sblockloc, (size_t)SBLOCKSIZE, (void *)&sblock, fso, Nflag);
DBG_PRINT0("sblock written\n");
DBG_DUMP_FS(&sblock, "new initial sblock");
/*
* Clean up the dynamic fields in our superblock copies.
*/
sblock.fs_fmod = 0;
sblock.fs_clean = 1;
sblock.fs_ronly = 0;
sblock.fs_cgrotor = 0;
sblock.fs_state = 0;
memset((void *)&sblock.fs_fsmnt, 0, sizeof(sblock.fs_fsmnt));
sblock.fs_flags &= FS_DOSOFTDEP;
/*
* XXX
* The following fields are currently distributed from the superblock
* to the copies:
* fs_minfree
* fs_rotdelay
* fs_maxcontig
* fs_maxbpg
* fs_minfree,
* fs_optim
* fs_flags regarding SOFTPDATES
*
* We probably should rather change the summary for the cylinder group
* statistics here to the value of what would be in there, if the file
* system were created initially with the new size. Therefor we still
* need to find an easy way of calculating that.
* Possibly we can try to read the first superblock copy and apply the
* "diffed" stats between the old and new superblock by still copying
* certain parameters onto that.
*/
/*
* Write out the duplicate super blocks.
*/
for (cylno = 0; cylno < sblock.fs_ncg; cylno++) {
wtfs(fsbtodb(&sblock, cgsblock(&sblock, cylno)),
(size_t)SBLOCKSIZE, (void *)&sblock, fso, Nflag);
}
DBG_PRINT0("sblock copies written\n");
DBG_DUMP_FS(&sblock, "new other sblocks");
DBG_LEAVE;
return;
}
