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29 * @(#)inode.c 8.8 (Berkeley) 4/28/95
30 * $FreeBSD: src/sbin/fsck/inode.c,v 1.20 2000/02/28 20:02:41 mckusick Exp $
33 #include <sys/param.h>
36 #include <vfs/ufs/dinode.h>
37 #include <vfs/ufs/dir.h>
38 #include <vfs/ufs/fs.h>
47 struct bufarea cgblk; /* cylinder group blocks */
48 struct bufarea *pbp; /* current inode block */
49 int newinofmt; /* filesystem has new inode format */
50 static ufs1_ino_t startinum;
51 char rerun; /* rerun fsck. Only used in non-preen mode */
52 struct ufs1_dinode zino;
54 static int iblock(struct inodesc *, long ilevel, quad_t isize);
57 ckinode(struct ufs1_dinode *dp, struct inodesc *idesc)
62 struct ufs1_dinode dino;
63 quad_t remsize, sizepb;
65 char pathbuf[MAXPATHLEN + 1];
67 if (idesc->id_fix != IGNORE)
68 idesc->id_fix = DONTKNOW;
69 idesc->id_entryno = 0;
70 idesc->id_filesize = dp->di_size;
71 mode = dp->di_mode & IFMT;
72 if (mode == IFBLK || mode == IFCHR || (mode == IFLNK &&
73 dp->di_size < (unsigned)sblock.fs_maxsymlinklen))
76 ndb = howmany(dino.di_size, sblock.fs_bsize);
77 for (ap = &dino.di_db[0]; ap < &dino.di_db[UFS_NDADDR]; ap++) {
78 if (--ndb == 0 && (offset = blkoff(&sblock, dino.di_size)) != 0)
80 numfrags(&sblock, fragroundup(&sblock, offset));
82 idesc->id_numfrags = sblock.fs_frag;
84 if (idesc->id_type == DATA && ndb >= 0) {
85 /* An empty block in a directory XXX */
86 getpathname(pathbuf, idesc->id_number,
88 pfatal("DIRECTORY %s: CONTAINS EMPTY BLOCKS",
90 if (reply("ADJUST LENGTH") == 1) {
91 dp = ginode(idesc->id_number);
92 dp->di_size = (ap - &dino.di_db[0]) *
95 "YOU MUST RERUN FSCK AFTERWARDS\n");
103 idesc->id_blkno = *ap;
104 if (idesc->id_type == ADDR)
105 ret = (*idesc->id_func)(idesc);
107 ret = dirscan(idesc);
111 idesc->id_numfrags = sblock.fs_frag;
112 remsize = dino.di_size - sblock.fs_bsize * UFS_NDADDR;
113 sizepb = sblock.fs_bsize;
114 for (ap = &dino.di_ib[0], n = 1; n <= UFS_NIADDR; ap++, n++) {
116 idesc->id_blkno = *ap;
117 ret = iblock(idesc, n, remsize);
121 if (idesc->id_type == DATA && remsize > 0) {
122 /* An empty block in a directory XXX */
123 getpathname(pathbuf, idesc->id_number,
125 pfatal("DIRECTORY %s: CONTAINS EMPTY BLOCKS",
127 if (reply("ADJUST LENGTH") == 1) {
128 dp = ginode(idesc->id_number);
129 dp->di_size -= remsize;
132 "YOU MUST RERUN FSCK AFTERWARDS\n");
139 sizepb *= NINDIR(&sblock);
146 iblock(struct inodesc *idesc, long ilevel, quad_t isize)
151 int i, n, (*func)(), nif;
154 char pathbuf[MAXPATHLEN + 1];
155 struct ufs1_dinode *dp;
157 if (idesc->id_type == ADDR) {
158 func = idesc->id_func;
159 if (((n = (*func)(idesc)) & KEEPON) == 0)
163 if (chkrange(idesc->id_blkno, idesc->id_numfrags))
165 bp = getdatablk(idesc->id_blkno, sblock.fs_bsize);
167 for (sizepb = sblock.fs_bsize, i = 0; i < ilevel; i++)
168 sizepb *= NINDIR(&sblock);
169 nif = howmany(isize , sizepb);
170 if (nif > NINDIR(&sblock))
171 nif = NINDIR(&sblock);
172 if (idesc->id_func == pass1check && nif < NINDIR(&sblock)) {
173 aplim = &bp->b_un.b_indir[NINDIR(&sblock)];
174 for (ap = &bp->b_un.b_indir[nif]; ap < aplim; ap++) {
177 sprintf(buf, "PARTIALLY TRUNCATED INODE I=%lu",
178 (u_long)idesc->id_number);
179 if (dofix(idesc, buf)) {
184 flush(fswritefd, bp);
186 aplim = &bp->b_un.b_indir[nif];
187 for (ap = bp->b_un.b_indir; ap < aplim; ap++) {
189 idesc->id_blkno = *ap;
193 n = iblock(idesc, ilevel, isize);
195 bp->b_flags &= ~B_INUSE;
199 if (idesc->id_type == DATA && isize > 0) {
200 /* An empty block in a directory XXX */
201 getpathname(pathbuf, idesc->id_number,
203 pfatal("DIRECTORY %s: CONTAINS EMPTY BLOCKS",
205 if (reply("ADJUST LENGTH") == 1) {
206 dp = ginode(idesc->id_number);
207 dp->di_size -= isize;
210 "YOU MUST RERUN FSCK AFTERWARDS\n");
213 bp->b_flags &= ~B_INUSE;
220 bp->b_flags &= ~B_INUSE;
225 * Check that a block in a legal block number.
226 * Return 0 if in range, 1 if out of range.
229 chkrange(ufs_daddr_t blk, int cnt)
233 if (cnt <= 0 || blk <= 0 || blk > maxfsblock ||
234 cnt - 1 > maxfsblock - blk)
236 if (cnt > sblock.fs_frag ||
237 fragnum(&sblock, blk) + cnt > sblock.fs_frag) {
239 printf("bad size: blk %ld, offset %d, size %d\n",
240 (long)blk, fragnum(&sblock, blk), cnt);
243 c = dtog(&sblock, blk);
244 if (blk < cgdmin(&sblock, c)) {
245 if ((blk + cnt) > cgsblock(&sblock, c)) {
247 printf("blk %ld < cgdmin %ld;",
248 (long)blk, (long)cgdmin(&sblock, c));
249 printf(" blk + cnt %ld > cgsbase %ld\n",
251 (long)cgsblock(&sblock, c));
256 if ((blk + cnt) > cgbase(&sblock, c+1)) {
258 printf("blk %ld >= cgdmin %ld;",
259 (long)blk, (long)cgdmin(&sblock, c));
260 printf(" blk + cnt %ld > sblock.fs_fpg %ld\n",
261 (long)(blk + cnt), (long)sblock.fs_fpg);
270 * General purpose interface for reading inodes.
273 ginode(ufs1_ino_t inumber)
277 if (inumber < UFS_ROOTINO || inumber > maxino)
278 errx(EEXIT, "bad inode number %d to ginode", inumber);
279 if (startinum == 0 ||
280 inumber < startinum || inumber >= startinum + INOPB(&sblock)) {
281 iblk = ino_to_fsba(&sblock, inumber);
283 pbp->b_flags &= ~B_INUSE;
284 pbp = getdatablk(iblk, sblock.fs_bsize);
285 startinum = rounddown(inumber, INOPB(&sblock));
287 return (&pbp->b_un.b_dinode[inumber % INOPB(&sblock)]);
291 * Special purpose version of ginode used to optimize first pass
292 * over all the inodes in numerical order.
294 ufs1_ino_t nextino, lastinum;
295 long readcnt, readpercg, fullcnt, inobufsize, partialcnt, partialsize;
296 struct ufs1_dinode *inodebuf;
299 getnextinode(ufs1_ino_t inumber)
303 static struct ufs1_dinode *dp;
305 if (inumber != nextino++ || inumber > maxino)
306 errx(EEXIT, "bad inode number %d to nextinode", inumber);
307 if (inumber >= lastinum) {
309 dblk = fsbtodb(&sblock, ino_to_fsba(&sblock, lastinum));
310 if (readcnt % readpercg == 0) {
312 lastinum += partialcnt;
318 * If bread returns an error, it will already have zeroed
319 * out the buffer, so we do not need to do so here.
321 bread(fsreadfd, (char *)inodebuf, dblk, size);
328 setinodebuf(ufs1_ino_t inum)
331 if (inum % sblock.fs_ipg != 0)
332 errx(EEXIT, "bad inode number %d to setinodebuf", inum);
337 if (inodebuf != NULL)
339 inobufsize = blkroundup(&sblock, INOBUFSIZE);
340 fullcnt = inobufsize / sizeof(struct ufs1_dinode);
341 readpercg = sblock.fs_ipg / fullcnt;
342 partialcnt = sblock.fs_ipg % fullcnt;
343 partialsize = partialcnt * sizeof(struct ufs1_dinode);
344 if (partialcnt != 0) {
347 partialcnt = fullcnt;
348 partialsize = inobufsize;
350 if ((inodebuf = (struct ufs1_dinode *)malloc((unsigned)inobufsize)) == NULL)
351 errx(EEXIT, "cannot allocate space for inode buffer");
358 if (inodebuf != NULL)
359 free((char *)inodebuf);
364 * Routines to maintain information about directory inodes.
365 * This is built during the first pass and used during the
366 * second and third passes.
368 * Enter inodes into the cache.
370 static struct memzone inoinfo_zone;
373 cacheino(struct ufs1_dinode *dp, ufs1_ino_t inumber)
376 struct inoinfo **inpp;
379 blks = howmany(dp->di_size, sblock.fs_bsize);
380 if (blks > UFS_NDADDR)
381 blks = UFS_NDADDR + UFS_NIADDR;
382 inp = mzalloc(&inoinfo_zone,
383 sizeof(*inp) + (blks - 1) * sizeof(ufs_daddr_t));
385 errx(EEXIT, "cannot increase directory list");
386 inpp = &inphead[DIRHASH(inumber)];
387 inp->i_nexthash = *inpp;
389 inp->i_parent = inumber == UFS_ROOTINO ? UFS_ROOTINO : (ufs1_ino_t)0;
390 inp->i_dotdot = (ufs1_ino_t)0;
391 inp->i_number = inumber;
392 inp->i_isize = dp->di_size;
393 inp->i_numblks = blks * sizeof(ufs_daddr_t);
394 memmove(&inp->i_blks[0], &dp->di_db[0], (size_t)inp->i_numblks);
395 if (inplast == listmax) {
397 inpsort = (struct inoinfo **)realloc((char *)inpsort,
398 (unsigned)listmax * sizeof(struct inoinfo *));
400 errx(EEXIT, "cannot increase directory list");
402 inpsort[inplast++] = inp;
406 * Look up an inode cache structure.
409 getinoinfo(ufs1_ino_t inumber)
413 for (inp = inphead[DIRHASH(inumber)]; inp; inp = inp->i_nexthash) {
414 if (inp->i_number != inumber)
418 errx(EEXIT, "cannot find inode %d", inumber);
423 * Clean up all the inode cache structure.
430 mzpurge(&inoinfo_zone);
431 free((char *)inphead);
432 free((char *)inpsort);
433 inphead = inpsort = NULL;
444 clri(struct inodesc *idesc, char *type, int flag)
446 struct ufs1_dinode *dp;
448 dp = ginode(idesc->id_number);
451 (dp->di_mode & IFMT) == IFDIR ? "DIR" : "FILE");
452 pinode(idesc->id_number);
454 if (preen || reply("CLEAR") == 1) {
456 printf(" (CLEARED)\n");
460 inoinfo(idesc->id_number)->ino_state = USTATE;
466 findname(struct inodesc *idesc)
468 struct direct *dirp = idesc->id_dirp;
470 if (dirp->d_ino != idesc->id_parent || idesc->id_entryno < 2) {
474 memmove(idesc->id_name, dirp->d_name, (size_t)dirp->d_namlen + 1);
479 findino(struct inodesc *idesc)
481 struct direct *dirp = idesc->id_dirp;
483 if (dirp->d_ino == 0)
485 if (strcmp(dirp->d_name, idesc->id_name) == 0 &&
486 dirp->d_ino >= UFS_ROOTINO && dirp->d_ino <= maxino) {
487 idesc->id_parent = dirp->d_ino;
494 clearentry(struct inodesc *idesc)
496 struct direct *dirp = idesc->id_dirp;
498 if (dirp->d_ino != idesc->id_parent || idesc->id_entryno < 2) {
503 return (STOP|FOUND|ALTERED);
507 pinode(ufs1_ino_t ino)
509 struct ufs1_dinode *dp;
514 printf(" I=%lu ", (u_long)ino);
515 if (ino < UFS_ROOTINO || ino > maxino)
519 if ((pw = getpwuid((int)dp->di_uid)) != NULL)
520 printf("%s ", pw->pw_name);
522 printf("%u ", (unsigned)dp->di_uid);
523 printf("MODE=%o\n", dp->di_mode);
525 printf("%s: ", cdevname);
526 printf("SIZE=%ju ", (uintmax_t)dp->di_size);
529 printf("MTIME=%12.12s %4.4s ", &p[4], &p[20]);
533 blkerror(ufs1_ino_t ino, char *type, ufs_daddr_t blk)
536 pfatal("%d %s I=%u", blk, type, ino);
538 switch (inoinfo(ino)->ino_state) {
541 inoinfo(ino)->ino_state = FCLEAR;
545 inoinfo(ino)->ino_state = DCLEAR;
553 errx(EEXIT, "BAD STATE %d TO BLKERR", inoinfo(ino)->ino_state);
559 * allocate an unused inode
562 allocino(ufs1_ino_t request, int type)
565 struct ufs1_dinode *dp;
566 struct cg *cgp = &cgrp;
570 request = UFS_ROOTINO;
571 else if (inoinfo(request)->ino_state != USTATE)
573 for (ino = request; ino < maxino; ino++)
574 if (inoinfo(ino)->ino_state == USTATE)
578 cg = ino_to_cg(&sblock, ino);
579 getblk(&cgblk, cgtod(&sblock, cg), sblock.fs_cgsize);
580 if (!cg_chkmagic(cgp))
581 pfatal("CG %d: BAD MAGIC NUMBER\n", cg);
582 setbit(cg_inosused(cgp), ino % sblock.fs_ipg);
583 cgp->cg_cs.cs_nifree--;
584 switch (type & IFMT) {
586 inoinfo(ino)->ino_state = DSTATE;
587 cgp->cg_cs.cs_ndir++;
591 inoinfo(ino)->ino_state = FSTATE;
598 dp->di_db[0] = allocblk((long)1);
599 if (dp->di_db[0] == 0) {
600 inoinfo(ino)->ino_state = USTATE;
605 dp->di_atime = time(NULL);
606 dp->di_mtime = dp->di_ctime = dp->di_atime;
607 dp->di_mtimensec = dp->di_ctimensec = dp->di_atimensec = 0;
608 dp->di_size = sblock.fs_fsize;
609 dp->di_blocks = btodb(sblock.fs_fsize);
613 inoinfo(ino)->ino_type = IFTODT(type);
618 * deallocate an inode
621 freeino(ufs1_ino_t ino)
623 struct inodesc idesc;
624 struct ufs1_dinode *dp;
626 memset(&idesc, 0, sizeof(struct inodesc));
627 idesc.id_type = ADDR;
628 idesc.id_func = pass4check;
629 idesc.id_number = ino;
634 inoinfo(ino)->ino_state = USTATE;