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Differential D36491 Diff 112816 sbin/fsck_ffs/dir.c

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sbin/fsck_ffs/dir.c

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static int static int
expanddir(struct inode *ip, char *name) expanddir(struct inode *ip, char *name)
{ {
ufs2_daddr_t lastlbn, oldblk, newblk, indirblk; ufs2_daddr_t lastlbn, oldblk, newblk, indirblk;
size_t filesize, lastlbnsize; size_t filesize, lastlbnsize;
struct bufarea *bp, *nbp; struct bufarea *bp, *nbp;
struct inodesc idesc; struct inodesc idesc;
union dinode *dp; union dinode *dp;
int indiralloced; long cg, indiralloced;
char *cp; char *cp;
nbp = NULL; nbp = NULL;
indiralloced = newblk = indirblk = 0; indiralloced = newblk = indirblk = 0;
memset(&idesc, 0, sizeof(struct inodesc));
idesc.id_type = ADDR;
pwarn("NO SPACE LEFT IN %s", name); pwarn("NO SPACE LEFT IN %s", name);
if (!preen && reply("EXPAND") == 0) if (!preen && reply("EXPAND") == 0)
return (0); return (0);
cg = ino_to_cg(&sblock, ip->i_number);
dp = ip->i_dp; dp = ip->i_dp;
filesize = DIP(dp, di_size); filesize = DIP(dp, di_size);
lastlbn = lblkno(&sblock, filesize); lastlbn = lblkno(&sblock, filesize);
/* /*
* We only expand lost+found to a single indirect block. * We only expand lost+found to a single indirect block.
*/ */
if ((DIP(dp, di_mode) & IFMT) != IFDIR || filesize == 0 || if ((DIP(dp, di_mode) & IFMT) != IFDIR || filesize == 0 ||
lastlbn >= UFS_NDADDR + NINDIR(&sblock)) lastlbn >= UFS_NDADDR + NINDIR(&sblock))
goto bad; goto bad;
/* /*
* If last block is a fragment, expand it to a full size block. * If last block is a fragment, expand it to a full size block.
*/ */
lastlbnsize = sblksize(&sblock, filesize, lastlbn); lastlbnsize = sblksize(&sblock, filesize, lastlbn);
if (lastlbnsize > 0 && lastlbnsize < sblock.fs_bsize) { if (lastlbnsize > 0 && lastlbnsize < sblock.fs_bsize) {
oldblk = DIP(dp, di_db[lastlbn]); oldblk = DIP(dp, di_db[lastlbn]);
bp = getdirblk(oldblk, lastlbnsize); bp = getdirblk(oldblk, lastlbnsize);
if (bp->b_errs) if (bp->b_errs)
goto bad; goto bad;
if ((newblk = allocblk(sblock.fs_frag)) == 0) newblk = allocblk(cg, sblock.fs_frag, std_checkblkavail);
if (newblk == 0)
goto bad; goto bad;
nbp = getdatablk(newblk, sblock.fs_bsize, BT_DIRDATA); nbp = getdatablk(newblk, sblock.fs_bsize, BT_DIRDATA);
if (nbp->b_errs) if (nbp->b_errs)
goto bad; goto bad;
DIP_SET(dp, di_db[lastlbn], newblk); DIP_SET(dp, di_db[lastlbn], newblk);
DIP_SET(dp, di_size, filesize + sblock.fs_bsize - lastlbnsize); DIP_SET(dp, di_size, filesize + sblock.fs_bsize - lastlbnsize);
DIP_SET(dp, di_blocks, DIP(dp, di_blocks) + DIP_SET(dp, di_blocks, DIP(dp, di_blocks) +
btodb(sblock.fs_bsize - lastlbnsize)); btodb(sblock.fs_bsize - lastlbnsize));
inodirty(ip); inodirty(ip);
memmove(nbp->b_un.b_buf, bp->b_un.b_buf, lastlbnsize); memmove(nbp->b_un.b_buf, bp->b_un.b_buf, lastlbnsize);
memset(&nbp->b_un.b_buf[lastlbnsize], 0, memset(&nbp->b_un.b_buf[lastlbnsize], 0,
sblock.fs_bsize - lastlbnsize); sblock.fs_bsize - lastlbnsize);
for (cp = &nbp->b_un.b_buf[lastlbnsize]; for (cp = &nbp->b_un.b_buf[lastlbnsize];
cp < &nbp->b_un.b_buf[sblock.fs_bsize]; cp < &nbp->b_un.b_buf[sblock.fs_bsize];
cp += DIRBLKSIZ) cp += DIRBLKSIZ)
memmove(cp, &emptydir, sizeof emptydir); memmove(cp, &emptydir, sizeof emptydir);
dirty(nbp); dirty(nbp);
brelse(nbp); brelse(nbp);
binval(bp);
idesc.id_blkno = oldblk; idesc.id_blkno = oldblk;
idesc.id_numfrags = numfrags(&sblock, lastlbnsize); idesc.id_numfrags = numfrags(&sblock, lastlbnsize);
(void)freeblock(&idesc); (void)freeblock(&idesc);
if (preen) if (preen)
printf(" (EXPANDED)\n"); printf(" (EXPANDED)\n");
return (1); return (1);
} }
if ((newblk = allocblk(sblock.fs_frag)) == 0) if ((newblk = allocblk(cg, sblock.fs_frag, std_checkblkavail)) == 0)
goto bad; goto bad;
bp = getdirblk(newblk, sblock.fs_bsize); bp = getdirblk(newblk, sblock.fs_bsize);
if (bp->b_errs) if (bp->b_errs)
goto bad; goto bad;
memset(bp->b_un.b_buf, 0, sblock.fs_bsize); memset(bp->b_un.b_buf, 0, sblock.fs_bsize);
for (cp = bp->b_un.b_buf; for (cp = bp->b_un.b_buf;
cp < &bp->b_un.b_buf[sblock.fs_bsize]; cp < &bp->b_un.b_buf[sblock.fs_bsize];
cp += DIRBLKSIZ) cp += DIRBLKSIZ)
memmove(cp, &emptydir, sizeof emptydir); memmove(cp, &emptydir, sizeof emptydir);
dirty(bp); dirty(bp);
if (lastlbn < UFS_NDADDR) { if (lastlbn < UFS_NDADDR) {
DIP_SET(dp, di_db[lastlbn], newblk); DIP_SET(dp, di_db[lastlbn], newblk);
} else { } else {
/* /*
* Allocate indirect block if needed. * Allocate indirect block if needed.
*/ */
if ((indirblk = DIP(dp, di_ib[0])) == 0) { if ((indirblk = DIP(dp, di_ib[0])) == 0) {
if ((indirblk = allocblk(sblock.fs_frag)) == 0) indirblk = allocblk(cg, sblock.fs_frag,
std_checkblkavail);
if (indirblk == 0) {
binval(bp);
goto bad; goto bad;
}
indiralloced = 1; indiralloced = 1;
} }
nbp = getdatablk(indirblk, sblock.fs_bsize, BT_LEVEL1); nbp = getdatablk(indirblk, sblock.fs_bsize, BT_LEVEL1);
if (nbp->b_errs) if (nbp->b_errs)
goto bad; goto bad;
if (indiralloced) { if (indiralloced) {
memset(nbp->b_un.b_buf, 0, sblock.fs_bsize); memset(nbp->b_un.b_buf, 0, sblock.fs_bsize);
DIP_SET(dp, di_ib[0], indirblk); DIP_SET(dp, di_ib[0], indirblk);
DIP_SET(dp, di_blocks, DIP_SET(dp, di_blocks,
DIP(dp, di_blocks) + btodb(sblock.fs_bsize)); DIP(dp, di_blocks) + btodb(sblock.fs_bsize));
} }
IBLK_SET(nbp, lastlbn - UFS_NDADDR, newblk); IBLK_SET(nbp, lastlbn - UFS_NDADDR, newblk);
dirty(nbp); dirty(nbp);
brelse(nbp); brelse(nbp);
} }
DIP_SET(dp, di_size, filesize + sblock.fs_bsize); DIP_SET(dp, di_size, filesize + sblock.fs_bsize);
DIP_SET(dp, di_blocks, DIP(dp, di_blocks) + btodb(sblock.fs_bsize)); DIP_SET(dp, di_blocks, DIP(dp, di_blocks) + btodb(sblock.fs_bsize));
inodirty(ip); inodirty(ip);
if (preen) if (preen)
printf(" (EXPANDED)\n"); printf(" (EXPANDED)\n");
return (1); return (1);
bad: bad:
pfatal(" (EXPANSION FAILED)\n"); pfatal(" (EXPANSION FAILED)\n");
if (nbp != NULL) if (nbp != NULL) {
binval(bp);
brelse(nbp); brelse(nbp);
}
if (newblk != 0) { if (newblk != 0) {
idesc.id_blkno = newblk; idesc.id_blkno = newblk;
idesc.id_numfrags = sblock.fs_frag; idesc.id_numfrags = sblock.fs_frag;
(void)freeblock(&idesc); (void)freeblock(&idesc);
} }
if (indiralloced) { if (indiralloced) {
idesc.id_blkno = indirblk; idesc.id_blkno = indirblk;
idesc.id_numfrags = sblock.fs_frag; idesc.id_numfrags = sblock.fs_frag;
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