2 * SPDX-License-Identifier: BSD-3-Clause AND BSD-2-Clause-FreeBSD
4 * Copyright (c) 2006 Pawel Jakub Dawidek <pjd@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
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23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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28 * Copyright (c) 1982, 1986, 1989, 1993
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32 * modification, are permitted provided that the following conditions
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37 * notice, this list of conditions and the following disclaimer in the
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45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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56 #include <sys/cdefs.h>
57 __FBSDID("$FreeBSD$");
59 #include <sys/param.h>
60 #include <sys/disklabel.h>
61 #include <sys/mount.h>
64 #include <ufs/ufs/ufsmount.h>
65 #include <ufs/ufs/dinode.h>
66 #include <ufs/ffs/fs.h>
81 char cgcu_buf[MAXBSIZE];
85 LIST_ENTRY(cgchain) cgc_next;
87 #define cgc_cg cgc_union.cgcu_cg
89 #define MAX_CACHED_CGS 1024
90 static unsigned ncgs = 0;
91 static LIST_HEAD(, cgchain) cglist = LIST_HEAD_INITIALIZER(cglist);
93 static const char *devnam;
94 static struct uufsd *disk = NULL;
95 static struct fs *fs = NULL;
96 struct ufs2_dinode ufs2_zino;
98 static void putcgs(void);
101 * Return cylinder group from the cache or load it if it is not in the
103 * Don't cache more than MAX_CACHED_CGS cylinder groups.
105 static struct cgchain *
110 assert(disk != NULL && fs != NULL);
111 LIST_FOREACH(cgc, &cglist, cgc_next) {
112 if (cgc->cgc_cg.cg_cgx == cg) {
113 //printf("%s: Found cg=%d\n", __func__, cg);
118 * Our cache is full? Let's clean it up.
120 if (ncgs >= MAX_CACHED_CGS) {
121 //printf("%s: Flushing CGs.\n", __func__);
124 cgc = malloc(sizeof(*cgc));
127 * Cannot allocate memory?
128 * Let's put all currently loaded and not busy cylinder groups
129 * on disk and try again.
131 //printf("%s: No memory, flushing CGs.\n", __func__);
133 cgc = malloc(sizeof(*cgc));
135 err(1, "malloc(%zu)", sizeof(*cgc));
137 if (cgread1(disk, cg) == -1)
138 err(1, "cgread1(%d)", cg);
139 bcopy(&disk->d_cg, &cgc->cgc_cg, sizeof(cgc->cgc_union));
142 LIST_INSERT_HEAD(&cglist, cgc, cgc_next);
144 //printf("%s: Read cg=%d\n", __func__, cg);
149 * Mark cylinder group as dirty - it will be written back on putcgs().
152 dirtycg(struct cgchain *cgc)
159 * Mark cylinder group as busy - it will not be freed on putcgs().
162 busycg(struct cgchain *cgc)
169 * Unmark the given cylinder group as busy.
172 unbusycg(struct cgchain *cgc)
179 * Write back all dirty cylinder groups.
180 * Free all non-busy cylinder groups.
185 struct cgchain *cgc, *cgc2;
187 assert(disk != NULL && fs != NULL);
188 LIST_FOREACH_SAFE(cgc, &cglist, cgc_next, cgc2) {
191 LIST_REMOVE(cgc, cgc_next);
193 if (cgc->cgc_dirty) {
194 bcopy(&cgc->cgc_cg, &disk->d_cg,
195 sizeof(cgc->cgc_union));
196 if (cgwrite1(disk, cgc->cgc_cg.cg_cgx) == -1)
197 err(1, "cgwrite1(%d)", cgc->cgc_cg.cg_cgx);
198 //printf("%s: Wrote cg=%d\n", __func__,
199 // cgc->cgc_cg.cg_cgx);
207 * Free all non-busy cylinder groups without storing the dirty ones.
214 assert(disk != NULL && fs != NULL);
215 while ((cgc = LIST_FIRST(&cglist)) != NULL) {
218 LIST_REMOVE(cgc, cgc_next);
219 //printf("%s: Canceled cg=%d\n", __func__, cgc->cgc_cg.cg_cgx);
226 * Open the given provider, load superblock.
233 disk = malloc(sizeof(*disk));
235 err(1, "malloc(%zu)", sizeof(*disk));
236 if (ufs_disk_fillout(disk, devnam) == -1) {
237 err(1, "ufs_disk_fillout(%s) failed: %s", devnam,
244 * Mark file system as clean, write the super-block back, close the disk.
251 if (sbwrite(disk, 0) == -1)
252 err(1, "sbwrite(%s)", devnam);
253 if (ufs_disk_close(disk) == -1)
254 err(1, "ufs_disk_close(%s)", devnam);
261 blkfree(ufs2_daddr_t bno, long size)
265 ufs1_daddr_t fragno, cgbno;
266 int i, cg, blk, frags, bbase;
273 cgbno = dtogd(fs, bno);
274 blksfree = cg_blksfree(cgp);
275 if (size == fs->fs_bsize) {
276 fragno = fragstoblks(fs, cgbno);
277 if (!ffs_isfreeblock(fs, blksfree, fragno))
278 assert(!"blkfree: freeing free block");
279 ffs_setblock(fs, blksfree, fragno);
280 ffs_clusteracct(fs, cgp, fragno, 1);
281 cgp->cg_cs.cs_nbfree++;
282 fs->fs_cstotal.cs_nbfree++;
283 fs->fs_cs(fs, cg).cs_nbfree++;
285 bbase = cgbno - fragnum(fs, cgbno);
287 * decrement the counts associated with the old frags
289 blk = blkmap(fs, blksfree, bbase);
290 ffs_fragacct(fs, blk, cgp->cg_frsum, -1);
292 * deallocate the fragment
294 frags = numfrags(fs, size);
295 for (i = 0; i < frags; i++) {
296 if (isset(blksfree, cgbno + i))
297 assert(!"blkfree: freeing free frag");
298 setbit(blksfree, cgbno + i);
300 cgp->cg_cs.cs_nffree += i;
301 fs->fs_cstotal.cs_nffree += i;
302 fs->fs_cs(fs, cg).cs_nffree += i;
304 * add back in counts associated with the new frags
306 blk = blkmap(fs, blksfree, bbase);
307 ffs_fragacct(fs, blk, cgp->cg_frsum, 1);
309 * if a complete block has been reassembled, account for it
311 fragno = fragstoblks(fs, bbase);
312 if (ffs_isblock(fs, blksfree, fragno)) {
313 cgp->cg_cs.cs_nffree -= fs->fs_frag;
314 fs->fs_cstotal.cs_nffree -= fs->fs_frag;
315 fs->fs_cs(fs, cg).cs_nffree -= fs->fs_frag;
316 ffs_clusteracct(fs, cgp, fragno, 1);
317 cgp->cg_cs.cs_nbfree++;
318 fs->fs_cstotal.cs_nbfree++;
319 fs->fs_cs(fs, cg).cs_nbfree++;
325 * Recursively free all indirect blocks.
328 freeindir(ufs2_daddr_t blk, int level)
330 char sblks[MAXBSIZE];
334 if (bread(disk, fsbtodb(fs, blk), (void *)&sblks, (size_t)fs->fs_bsize) == -1)
335 err(1, "bread: %s", disk->d_error);
336 blks = (ufs2_daddr_t *)&sblks;
337 for (i = 0; i < NINDIR(fs); i++) {
341 blkfree(blks[i], fs->fs_bsize);
343 freeindir(blks[i], level - 1);
345 blkfree(blk, fs->fs_bsize);
348 #define dblksize(fs, dino, lbn) \
349 ((dino)->di_size >= smalllblktosize(fs, (lbn) + 1) \
351 : fragroundup(fs, blkoff(fs, (dino)->di_size)))
354 * Free all blocks associated with the given inode.
357 clear_inode(struct ufs2_dinode *dino)
360 int extblocks, i, level;
365 if (fs->fs_magic == FS_UFS2_MAGIC && dino->di_extsize > 0)
366 extblocks = btodb(fragroundup(fs, dino->di_extsize));
367 /* deallocate external attributes blocks */
369 osize = dino->di_extsize;
370 dino->di_blocks -= extblocks;
371 dino->di_extsize = 0;
372 for (i = 0; i < UFS_NXADDR; i++) {
373 if (dino->di_extb[i] == 0)
375 blkfree(dino->di_extb[i], sblksize(fs, osize, i));
378 #define SINGLE 0 /* index of single indirect block */
379 #define DOUBLE 1 /* index of double indirect block */
380 #define TRIPLE 2 /* index of triple indirect block */
381 /* deallocate indirect blocks */
382 for (level = SINGLE; level <= TRIPLE; level++) {
383 if (dino->di_ib[level] == 0)
385 freeindir(dino->di_ib[level], level);
387 /* deallocate direct blocks and fragments */
388 for (i = 0; i < UFS_NDADDR; i++) {
392 bsize = dblksize(fs, dino, i);
398 gjournal_check(const char *filesys)
400 struct ufs2_dinode *dino;
410 /* Are there any unreferenced inodes in this file system? */
411 if (fs->fs_unrefs == 0) {
412 //printf("No unreferenced inodes.\n");
417 for (cg = 0; cg < fs->fs_ncg; cg++) {
418 /* Show progress if requested. */
420 printf("%s: phase j: cyl group %d of %d (%d%%)\n",
421 cdevname, cg, fs->fs_ncg, cg * 100 / fs->fs_ncg);
425 setproctitle("%s pj %d%%", cdevname,
426 cg * 100 / fs->fs_ncg);
431 /* Are there any unreferenced inodes in this cylinder group? */
432 if (cgp->cg_unrefs == 0)
434 //printf("Analizing cylinder group %d (count=%d)\n", cg, cgp->cg_unrefs);
436 * We are going to modify this cylinder group, so we want it to
440 /* We don't want it to be freed in the meantime. */
442 inosused = cg_inosused(cgp);
444 * Now go through the list of all inodes in this cylinder group
445 * to find unreferenced ones.
447 for (cino = 0; cino < fs->fs_ipg; cino++) {
448 ino = fs->fs_ipg * cg + cino;
449 /* Unallocated? Skip it. */
450 if (isclr(inosused, cino))
452 if (getino(disk, &p, ino, &mode) == -1)
453 err(1, "getino(cg=%d ino=%ju)",
456 /* Not a regular file nor directory? Skip it. */
457 if (!S_ISREG(dino->di_mode) && !S_ISDIR(dino->di_mode))
459 /* Has reference(s)? Skip it. */
460 if (dino->di_nlink > 0)
462 //printf("Clearing inode=%d (size=%jd)\n", ino, (intmax_t)dino->di_size);
463 /* Free inode's blocks. */
466 clrbit(inosused, cino);
467 /* Update position of last used inode. */
468 if (ino < cgp->cg_irotor)
469 cgp->cg_irotor = ino;
470 /* Update statistics. */
471 cgp->cg_cs.cs_nifree++;
472 fs->fs_cs(fs, cg).cs_nifree++;
473 fs->fs_cstotal.cs_nifree++;
476 /* If this is directory, update related statistics. */
477 if (S_ISDIR(dino->di_mode)) {
478 cgp->cg_cs.cs_ndir--;
479 fs->fs_cs(fs, cg).cs_ndir--;
480 fs->fs_cstotal.cs_ndir--;
482 /* Zero-fill the inode. */
484 /* Write the inode back. */
485 if (putino(disk) == -1)
486 err(1, "putino(cg=%d ino=%ju)",
488 if (cgp->cg_unrefs == 0) {
489 //printf("No more unreferenced inodes in cg=%d.\n", cg);
494 * We don't need this cylinder group anymore, so feel free to
499 * If there are no more unreferenced inodes, there is no need to
500 * check other cylinder groups.
502 if (fs->fs_unrefs == 0) {
503 //printf("No more unreferenced inodes (cg=%d/%d).\n", cg,
508 /* Write back modified cylinder groups. */
510 /* Write back updated statistics and super-block. */