1 /* $NetBSD: ffs.c,v 1.45 2011/10/09 22:49:26 christos Exp $ */
4 * Copyright (c) 2001 Wasabi Systems, Inc.
7 * Written by Luke Mewburn for Wasabi Systems, Inc.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed for the NetBSD Project by
20 * Wasabi Systems, Inc.
21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22 * or promote products derived from this software without specific prior
25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
38 * Copyright (c) 1982, 1986, 1989, 1993
39 * The Regents of the University of California. All rights reserved.
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
44 * 1. Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
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65 * @(#)ffs_alloc.c 8.19 (Berkeley) 7/13/95
68 #include <sys/cdefs.h>
69 __FBSDID("$FreeBSD$");
71 #include <sys/param.h>
73 #include <sys/mount.h>
90 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
91 #include <sys/statvfs.h>
94 #include <ufs/ufs/dinode.h>
95 #include <ufs/ufs/dir.h>
96 #include <ufs/ffs/fs.h>
99 #include "ffs/ufs_bswap.h"
100 #include "ffs/ufs_inode.h"
101 #include "ffs/newfs_extern.h"
102 #include "ffs/ffs_extern.h"
105 #define DIP(dp, field) \
106 ((ffs_opts->version == 1) ? \
107 (dp)->ffs1_din.di_##field : (dp)->ffs2_din.di_##field)
110 * Various file system defaults (cribbed from newfs(8)).
112 #define DFL_FRAGSIZE 1024 /* fragment size */
113 #define DFL_BLKSIZE 8192 /* block size */
114 #define DFL_SECSIZE 512 /* sector size */
115 #define DFL_CYLSPERGROUP 65536 /* cylinders per group */
116 #define DFL_FRAGSPERINODE 4 /* fragments per inode */
117 #define DFL_ROTDELAY 0 /* rotational delay */
118 #define DFL_NRPOS 1 /* rotational positions */
119 #define DFL_RPM 3600 /* rpm of disk */
120 #define DFL_NSECTORS 64 /* # of sectors */
121 #define DFL_NTRACKS 16 /* # of tracks */
125 u_char *buf; /* buf for directory */
126 doff_t size; /* full size of buf */
127 doff_t cur; /* offset of current entry */
131 static int ffs_create_image(const char *, fsinfo_t *);
132 static void ffs_dump_fsinfo(fsinfo_t *);
133 static void ffs_dump_dirbuf(dirbuf_t *, const char *, int);
134 static void ffs_make_dirbuf(dirbuf_t *, const char *, fsnode *, int);
135 static int ffs_populate_dir(const char *, fsnode *, fsinfo_t *);
136 static void ffs_size_dir(fsnode *, fsinfo_t *);
137 static void ffs_validate(const char *, fsnode *, fsinfo_t *);
138 static void ffs_write_file(union dinode *, uint32_t, void *, fsinfo_t *);
139 static void ffs_write_inode(union dinode *, uint32_t, const fsinfo_t *);
140 static void *ffs_build_dinode1(struct ufs1_dinode *, dirbuf_t *, fsnode *,
141 fsnode *, fsinfo_t *);
142 static void *ffs_build_dinode2(struct ufs2_dinode *, dirbuf_t *, fsnode *,
143 fsnode *, fsinfo_t *);
146 /* publicly visible functions */
149 ffs_prep_opts(fsinfo_t *fsopts)
151 ffs_opt_t *ffs_opts = ecalloc(1, sizeof(*ffs_opts));
153 const option_t ffs_options[] = {
154 { 'b', "bsize", &ffs_opts->bsize, OPT_INT32,
155 1, INT_MAX, "block size" },
156 { 'f', "fsize", &ffs_opts->fsize, OPT_INT32,
157 1, INT_MAX, "fragment size" },
158 { 'd', "density", &ffs_opts->density, OPT_INT32,
159 1, INT_MAX, "bytes per inode" },
160 { 'm', "minfree", &ffs_opts->minfree, OPT_INT32,
162 { 'M', "maxbpg", &ffs_opts->maxbpg, OPT_INT32,
163 1, INT_MAX, "max blocks per file in a cg" },
164 { 'a', "avgfilesize", &ffs_opts->avgfilesize, OPT_INT32,
165 1, INT_MAX, "expected average file size" },
166 { 'n', "avgfpdir", &ffs_opts->avgfpdir, OPT_INT32,
167 1, INT_MAX, "expected # of files per directory" },
168 { 'x', "extent", &ffs_opts->maxbsize, OPT_INT32,
169 1, INT_MAX, "maximum # extent size" },
170 { 'g', "maxbpcg", &ffs_opts->maxblkspercg, OPT_INT32,
171 1, INT_MAX, "max # of blocks per group" },
172 { 'v', "version", &ffs_opts->version, OPT_INT32,
173 1, 2, "UFS version" },
174 { 'o', "optimization", NULL, OPT_STRBUF,
175 0, 0, "Optimization (time|space)" },
176 { 'l', "label", ffs_opts->label, OPT_STRARRAY,
177 1, sizeof(ffs_opts->label), "UFS label" },
178 { 's', "softupdates", &ffs_opts->softupdates, OPT_INT32,
179 0, 1, "enable softupdates" },
186 ffs_opts->density= -1;
187 ffs_opts->minfree= -1;
188 ffs_opts->optimization= -1;
189 ffs_opts->maxcontig= -1;
190 ffs_opts->maxbpg= -1;
191 ffs_opts->avgfilesize= -1;
192 ffs_opts->avgfpdir= -1;
193 ffs_opts->version = 1;
194 ffs_opts->softupdates = 0;
196 fsopts->fs_specific = ffs_opts;
197 fsopts->fs_options = copy_opts(ffs_options);
201 ffs_cleanup_opts(fsinfo_t *fsopts)
203 free(fsopts->fs_specific);
204 free(fsopts->fs_options);
208 ffs_parse_opts(const char *option, fsinfo_t *fsopts)
210 ffs_opt_t *ffs_opts = fsopts->fs_specific;
211 option_t *ffs_options = fsopts->fs_options;
216 assert(option != NULL);
217 assert(fsopts != NULL);
218 assert(ffs_opts != NULL);
220 if (debug & DEBUG_FS_PARSE_OPTS)
221 printf("ffs_parse_opts: got `%s'\n", option);
223 rv = set_option(ffs_options, option, buf, sizeof(buf));
227 if (ffs_options[rv].name == NULL)
230 switch (ffs_options[rv].letter) {
232 if (strcmp(buf, "time") == 0) {
233 ffs_opts->optimization = FS_OPTTIME;
234 } else if (strcmp(buf, "space") == 0) {
235 ffs_opts->optimization = FS_OPTSPACE;
237 warnx("Invalid optimization `%s'", buf);
249 ffs_makefs(const char *image, const char *dir, fsnode *root, fsinfo_t *fsopts)
251 struct fs *superblock;
252 struct timeval start;
254 assert(image != NULL);
256 assert(root != NULL);
257 assert(fsopts != NULL);
259 if (debug & DEBUG_FS_MAKEFS)
260 printf("ffs_makefs: image %s directory %s root %p\n",
263 /* validate tree and options */
265 ffs_validate(dir, root, fsopts);
266 TIMER_RESULTS(start, "ffs_validate");
268 printf("Calculated size of `%s': %lld bytes, %lld inodes\n",
269 image, (long long)fsopts->size, (long long)fsopts->inodes);
273 if (ffs_create_image(image, fsopts) == -1)
274 errx(1, "Image file `%s' not created.", image);
275 TIMER_RESULTS(start, "ffs_create_image");
277 fsopts->curinode = UFS_ROOTINO;
279 if (debug & DEBUG_FS_MAKEFS)
283 printf("Populating `%s'\n", image);
285 if (! ffs_populate_dir(dir, root, fsopts))
286 errx(1, "Image file `%s' not populated.", image);
287 TIMER_RESULTS(start, "ffs_populate_dir");
289 /* ensure no outstanding buffers remain */
290 if (debug & DEBUG_FS_MAKEFS)
293 /* update various superblock parameters */
294 superblock = fsopts->superblock;
295 superblock->fs_fmod = 0;
296 superblock->fs_old_cstotal.cs_ndir = superblock->fs_cstotal.cs_ndir;
297 superblock->fs_old_cstotal.cs_nbfree = superblock->fs_cstotal.cs_nbfree;
298 superblock->fs_old_cstotal.cs_nifree = superblock->fs_cstotal.cs_nifree;
299 superblock->fs_old_cstotal.cs_nffree = superblock->fs_cstotal.cs_nffree;
301 /* write out superblock; image is now complete */
302 ffs_write_superblock(fsopts->superblock, fsopts);
303 if (close(fsopts->fd) == -1)
304 err(1, "Closing `%s'", image);
306 printf("Image `%s' complete\n", image);
309 /* end of public functions */
313 ffs_validate(const char *dir, fsnode *root, fsinfo_t *fsopts)
317 int32_t spc, nspf, ncyl, fssize;
319 ffs_opt_t *ffs_opts = fsopts->fs_specific;
322 assert(root != NULL);
323 assert(fsopts != NULL);
324 assert(ffs_opts != NULL);
326 if (debug & DEBUG_FS_VALIDATE) {
327 printf("ffs_validate: before defaults set:\n");
328 ffs_dump_fsinfo(fsopts);
331 /* set FFS defaults */
332 if (fsopts->sectorsize == -1)
333 fsopts->sectorsize = DFL_SECSIZE;
334 if (ffs_opts->fsize == -1)
335 ffs_opts->fsize = MAX(DFL_FRAGSIZE, fsopts->sectorsize);
336 if (ffs_opts->bsize == -1)
337 ffs_opts->bsize = MIN(DFL_BLKSIZE, 8 * ffs_opts->fsize);
338 if (ffs_opts->cpg == -1)
339 ffs_opts->cpg = DFL_CYLSPERGROUP;
341 ffs_opts->cpgflg = 1;
342 /* fsopts->density is set below */
343 if (ffs_opts->nsectors == -1)
344 ffs_opts->nsectors = DFL_NSECTORS;
345 if (ffs_opts->minfree == -1)
346 ffs_opts->minfree = MINFREE;
347 if (ffs_opts->optimization == -1)
348 ffs_opts->optimization = DEFAULTOPT;
349 if (ffs_opts->maxcontig == -1)
350 ffs_opts->maxcontig =
351 MAX(1, MIN(MAXPHYS, FFS_MAXBSIZE) / ffs_opts->bsize);
353 if (ffs_opts->maxbpg == -1)
354 ffs_opts->maxbpg = ffs_opts->bsize / sizeof(int32_t);
355 if (ffs_opts->avgfilesize == -1)
356 ffs_opts->avgfilesize = AVFILESIZ;
357 if (ffs_opts->avgfpdir == -1)
358 ffs_opts->avgfpdir = AFPDIR;
360 if (fsopts->maxsize > 0 &&
361 roundup(fsopts->minsize, ffs_opts->bsize) > fsopts->maxsize)
362 errx(1, "`%s' minsize of %lld rounded up to ffs bsize of %d "
363 "exceeds maxsize %lld. Lower bsize, or round the minimum "
364 "and maximum sizes to bsize.", dir,
365 (long long)fsopts->minsize, ffs_opts->bsize,
366 (long long)fsopts->maxsize);
368 /* calculate size of tree */
369 ffs_size_dir(root, fsopts);
370 fsopts->inodes += UFS_ROOTINO; /* include first two inodes */
372 if (debug & DEBUG_FS_VALIDATE)
373 printf("ffs_validate: size of tree: %lld bytes, %lld inodes\n",
374 (long long)fsopts->size, (long long)fsopts->inodes);
376 /* add requested slop */
377 fsopts->size += fsopts->freeblocks;
378 fsopts->inodes += fsopts->freefiles;
379 if (fsopts->freefilepc > 0)
381 fsopts->inodes * (100 + fsopts->freefilepc) / 100;
382 if (fsopts->freeblockpc > 0)
384 fsopts->size * (100 + fsopts->freeblockpc) / 100;
386 /* add space needed for superblocks */
388 * The old SBOFF (SBLOCK_UFS1) is used here because makefs is
389 * typically used for small filesystems where space matters.
390 * XXX make this an option.
392 fsopts->size += (SBLOCK_UFS1 + SBLOCKSIZE) * ncg;
393 /* add space needed to store inodes, x3 for blockmaps, etc */
394 if (ffs_opts->version == 1)
395 fsopts->size += ncg * DINODE1_SIZE *
396 roundup(fsopts->inodes / ncg,
397 ffs_opts->bsize / DINODE1_SIZE);
399 fsopts->size += ncg * DINODE2_SIZE *
400 roundup(fsopts->inodes / ncg,
401 ffs_opts->bsize / DINODE2_SIZE);
404 if (ffs_opts->minfree > 0)
406 fsopts->size * (100 + ffs_opts->minfree) / 100;
408 * XXX any other fs slop to add, such as csum's, bitmaps, etc ??
411 if (fsopts->size < fsopts->minsize) /* ensure meets minimum size */
412 fsopts->size = fsopts->minsize;
414 /* round up to the next block */
415 fsopts->size = roundup(fsopts->size, ffs_opts->bsize);
417 /* round up to requested block size, if any */
418 if (fsopts->roundup > 0)
419 fsopts->size = roundup(fsopts->size, fsopts->roundup);
421 /* calculate density if necessary */
422 if (ffs_opts->density == -1)
423 ffs_opts->density = fsopts->size / fsopts->inodes + 1;
425 if (debug & DEBUG_FS_VALIDATE) {
426 printf("ffs_validate: after defaults set:\n");
427 ffs_dump_fsinfo(fsopts);
428 printf("ffs_validate: dir %s; %lld bytes, %lld inodes\n",
429 dir, (long long)fsopts->size, (long long)fsopts->inodes);
431 /* now check calculated sizes vs requested sizes */
432 if (fsopts->maxsize > 0 && fsopts->size > fsopts->maxsize) {
433 errx(1, "`%s' size of %lld is larger than the maxsize of %lld.",
434 dir, (long long)fsopts->size, (long long)fsopts->maxsize);
440 ffs_dump_fsinfo(fsinfo_t *f)
443 ffs_opt_t *fs = f->fs_specific;
445 printf("fsopts at %p\n", f);
447 printf("\tsize %lld, inodes %lld, curinode %u\n",
448 (long long)f->size, (long long)f->inodes, f->curinode);
450 printf("\tminsize %lld, maxsize %lld\n",
451 (long long)f->minsize, (long long)f->maxsize);
452 printf("\tfree files %lld, freefile %% %d\n",
453 (long long)f->freefiles, f->freefilepc);
454 printf("\tfree blocks %lld, freeblock %% %d\n",
455 (long long)f->freeblocks, f->freeblockpc);
456 printf("\tneedswap %d, sectorsize %d\n", f->needswap, f->sectorsize);
458 printf("\tbsize %d, fsize %d, cpg %d, density %d\n",
459 fs->bsize, fs->fsize, fs->cpg, fs->density);
460 printf("\tnsectors %d, rpm %d, minfree %d\n",
461 fs->nsectors, fs->rpm, fs->minfree);
462 printf("\tmaxcontig %d, maxbpg %d\n",
463 fs->maxcontig, fs->maxbpg);
464 printf("\toptimization %s\n",
465 fs->optimization == FS_OPTSPACE ? "space" : "time");
470 ffs_create_image(const char *image, fsinfo_t *fsopts)
472 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
479 int oflags = O_RDWR | O_CREAT;
482 assert (image != NULL);
483 assert (fsopts != NULL);
486 if (fsopts->offset == 0)
488 if ((fsopts->fd = open(image, oflags, 0666)) == -1) {
489 warn("Can't open `%s' for writing", image);
494 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
495 if (fstatvfs(fsopts->fd, &sfs) == -1) {
498 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
499 warn("can't fstatvfs `%s', using default %d byte chunk",
502 bufsize = sfs.f_iosize;
504 bufrem = fsopts->size;
505 if (fsopts->sparse) {
506 if (ftruncate(fsopts->fd, bufrem) == -1) {
507 warn("sparse option disabled.");
511 if (fsopts->sparse) {
512 /* File truncated at bufrem. Remaining is 0 */
516 if (debug & DEBUG_FS_CREATE_IMAGE)
517 printf("zero-ing image `%s', %lld sectors, "
518 "using %d byte chunks\n", image, (long long)bufrem,
520 buf = ecalloc(1, bufsize);
523 if (fsopts->offset != 0)
524 if (lseek(fsopts->fd, fsopts->offset, SEEK_SET) == -1) {
531 i = write(fsopts->fd, buf, MIN(bufsize, bufrem));
533 warn("zeroing image, %lld bytes to go",
543 /* make the file system */
544 if (debug & DEBUG_FS_CREATE_IMAGE)
545 printf("calling mkfs(\"%s\", ...)\n", image);
547 if (stampst.st_ino != 0)
548 tstamp = stampst.st_ctime;
550 tstamp = start_time.tv_sec;
554 fs = ffs_mkfs(image, fsopts, tstamp);
555 fsopts->superblock = (void *)fs;
556 if (debug & DEBUG_FS_CREATE_IMAGE) {
559 t = (time_t)((struct fs *)fsopts->superblock)->fs_time;
560 printf("mkfs returned %p; fs_time %s",
561 fsopts->superblock, ctime(&t));
562 printf("fs totals: nbfree %lld, nffree %lld, nifree %lld, ndir %lld\n",
563 (long long)fs->fs_cstotal.cs_nbfree,
564 (long long)fs->fs_cstotal.cs_nffree,
565 (long long)fs->fs_cstotal.cs_nifree,
566 (long long)fs->fs_cstotal.cs_ndir);
569 if (fs->fs_cstotal.cs_nifree + UFS_ROOTINO < fsopts->inodes) {
571 "Image file `%s' has %lld free inodes; %lld are required.",
573 (long long)(fs->fs_cstotal.cs_nifree + UFS_ROOTINO),
574 (long long)fsopts->inodes);
582 ffs_size_dir(fsnode *root, fsinfo_t *fsopts)
584 struct direct tmpdir;
586 int curdirsize, this;
587 ffs_opt_t *ffs_opts = fsopts->fs_specific;
589 /* node may be NULL (empty directory) */
590 assert(fsopts != NULL);
591 assert(ffs_opts != NULL);
593 if (debug & DEBUG_FS_SIZE_DIR)
594 printf("ffs_size_dir: entry: bytes %lld inodes %lld\n",
595 (long long)fsopts->size, (long long)fsopts->inodes);
597 #define ADDDIRENT(e) do { \
598 tmpdir.d_namlen = strlen((e)); \
599 this = DIRSIZ_SWAP(0, &tmpdir, 0); \
600 if (debug & DEBUG_FS_SIZE_DIR_ADD_DIRENT) \
601 printf("ADDDIRENT: was: %s (%d) this %d cur %d\n", \
602 e, tmpdir.d_namlen, this, curdirsize); \
603 if (this + curdirsize > roundup(curdirsize, DIRBLKSIZ)) \
604 curdirsize = roundup(curdirsize, DIRBLKSIZ); \
605 curdirsize += this; \
606 if (debug & DEBUG_FS_SIZE_DIR_ADD_DIRENT) \
607 printf("ADDDIRENT: now: %s (%d) this %d cur %d\n", \
608 e, tmpdir.d_namlen, this, curdirsize); \
612 * XXX this needs to take into account extra space consumed
613 * by indirect blocks, etc.
615 #define ADDSIZE(x) do { \
616 fsopts->size += roundup((x), ffs_opts->fsize); \
620 for (node = root; node != NULL; node = node->next) {
621 ADDDIRENT(node->name);
622 if (node == root) { /* we're at "." */
623 assert(strcmp(node->name, ".") == 0);
625 } else if ((node->inode->flags & FI_SIZED) == 0) {
626 /* don't count duplicate names */
627 node->inode->flags |= FI_SIZED;
628 if (debug & DEBUG_FS_SIZE_DIR_NODE)
629 printf("ffs_size_dir: `%s' size %lld\n",
631 (long long)node->inode->st.st_size);
633 if (node->type == S_IFREG)
634 ADDSIZE(node->inode->st.st_size);
635 if (node->type == S_IFLNK) {
638 slen = strlen(node->symlink) + 1;
639 if (slen >= (ffs_opts->version == 1 ?
645 if (node->type == S_IFDIR)
646 ffs_size_dir(node->child, fsopts);
650 if (debug & DEBUG_FS_SIZE_DIR)
651 printf("ffs_size_dir: exit: size %lld inodes %lld\n",
652 (long long)fsopts->size, (long long)fsopts->inodes);
656 ffs_build_dinode1(struct ufs1_dinode *dinp, dirbuf_t *dbufp, fsnode *cur,
657 fsnode *root, fsinfo_t *fsopts)
661 struct stat *st = stampst.st_ino != 0 ? &stampst : &cur->inode->st;
663 memset(dinp, 0, sizeof(*dinp));
664 dinp->di_mode = cur->inode->st.st_mode;
665 dinp->di_nlink = cur->inode->nlink;
666 dinp->di_size = cur->inode->st.st_size;
667 #if HAVE_STRUCT_STAT_ST_FLAGS
668 dinp->di_flags = cur->inode->st.st_flags;
670 dinp->di_gen = random();
671 dinp->di_uid = cur->inode->st.st_uid;
672 dinp->di_gid = cur->inode->st.st_gid;
674 dinp->di_atime = st->st_atime;
675 dinp->di_mtime = st->st_mtime;
676 dinp->di_ctime = st->st_ctime;
677 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
678 dinp->di_atimensec = st->st_atimensec;
679 dinp->di_mtimensec = st->st_mtimensec;
680 dinp->di_ctimensec = st->st_ctimensec;
682 /* not set: di_db, di_ib, di_blocks, di_spare */
685 if (cur == root) { /* "."; write dirbuf */
687 dinp->di_size = dbufp->size;
688 } else if (S_ISBLK(cur->type) || S_ISCHR(cur->type)) {
689 dinp->di_size = 0; /* a device */
691 ufs_rw32(cur->inode->st.st_rdev, fsopts->needswap);
692 } else if (S_ISLNK(cur->type)) { /* symlink */
693 slen = strlen(cur->symlink);
694 if (slen < UFS1_MAXSYMLINKLEN) { /* short link */
695 memcpy(dinp->di_db, cur->symlink, slen);
697 membuf = cur->symlink;
698 dinp->di_size = slen;
704 ffs_build_dinode2(struct ufs2_dinode *dinp, dirbuf_t *dbufp, fsnode *cur,
705 fsnode *root, fsinfo_t *fsopts)
709 struct stat *st = stampst.st_ino != 0 ? &stampst : &cur->inode->st;
711 memset(dinp, 0, sizeof(*dinp));
712 dinp->di_mode = cur->inode->st.st_mode;
713 dinp->di_nlink = cur->inode->nlink;
714 dinp->di_size = cur->inode->st.st_size;
715 #if HAVE_STRUCT_STAT_ST_FLAGS
716 dinp->di_flags = cur->inode->st.st_flags;
718 dinp->di_gen = random();
719 dinp->di_uid = cur->inode->st.st_uid;
720 dinp->di_gid = cur->inode->st.st_gid;
722 dinp->di_atime = st->st_atime;
723 dinp->di_mtime = st->st_mtime;
724 dinp->di_ctime = st->st_ctime;
725 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
726 dinp->di_atimensec = st->st_atimensec;
727 dinp->di_mtimensec = st->st_mtimensec;
728 dinp->di_ctimensec = st->st_ctimensec;
730 #if HAVE_STRUCT_STAT_BIRTHTIME
731 dinp->di_birthtime = st->st_birthtime;
732 dinp->di_birthnsec = st->st_birthtimensec;
734 /* not set: di_db, di_ib, di_blocks, di_spare */
737 if (cur == root) { /* "."; write dirbuf */
739 dinp->di_size = dbufp->size;
740 } else if (S_ISBLK(cur->type) || S_ISCHR(cur->type)) {
741 dinp->di_size = 0; /* a device */
743 ufs_rw64(cur->inode->st.st_rdev, fsopts->needswap);
744 } else if (S_ISLNK(cur->type)) { /* symlink */
745 slen = strlen(cur->symlink);
746 if (slen < UFS2_MAXSYMLINKLEN) { /* short link */
747 memcpy(dinp->di_db, cur->symlink, slen);
749 membuf = cur->symlink;
750 dinp->di_size = slen;
756 ffs_populate_dir(const char *dir, fsnode *root, fsinfo_t *fsopts)
762 char path[MAXPATHLEN + 1];
763 ffs_opt_t *ffs_opts = fsopts->fs_specific;
766 assert(root != NULL);
767 assert(fsopts != NULL);
768 assert(ffs_opts != NULL);
770 (void)memset(&dirbuf, 0, sizeof(dirbuf));
772 if (debug & DEBUG_FS_POPULATE)
773 printf("ffs_populate_dir: PASS 1 dir %s node %p\n", dir, root);
776 * pass 1: allocate inode numbers, build directory `file'
778 for (cur = root; cur != NULL; cur = cur->next) {
779 if ((cur->inode->flags & FI_ALLOCATED) == 0) {
780 cur->inode->flags |= FI_ALLOCATED;
781 if (cur == root && cur->parent != NULL)
782 cur->inode->ino = cur->parent->inode->ino;
784 cur->inode->ino = fsopts->curinode;
788 ffs_make_dirbuf(&dirbuf, cur->name, cur, fsopts->needswap);
789 if (cur == root) { /* we're at "."; add ".." */
790 ffs_make_dirbuf(&dirbuf, "..",
791 cur->parent == NULL ? cur : cur->parent->first,
793 root->inode->nlink++; /* count my parent's link */
794 } else if (cur->child != NULL)
795 root->inode->nlink++; /* count my child's link */
798 * XXX possibly write file and long symlinks here,
799 * ensuring that blocks get written before inodes?
800 * otoh, this isn't a real filesystem, so who
801 * cares about ordering? :-)
804 if (debug & DEBUG_FS_POPULATE_DIRBUF)
805 ffs_dump_dirbuf(&dirbuf, dir, fsopts->needswap);
808 * pass 2: write out dirbuf, then non-directories at this level
810 if (debug & DEBUG_FS_POPULATE)
811 printf("ffs_populate_dir: PASS 2 dir %s\n", dir);
812 for (cur = root; cur != NULL; cur = cur->next) {
813 if (cur->inode->flags & FI_WRITTEN)
814 continue; /* skip hard-linked entries */
815 cur->inode->flags |= FI_WRITTEN;
817 if (cur->contents == NULL) {
818 if (snprintf(path, sizeof(path), "%s/%s/%s", cur->root,
819 cur->path, cur->name) >= (int)sizeof(path))
820 errx(1, "Pathname too long.");
823 if (cur->child != NULL)
824 continue; /* child creates own inode */
826 /* build on-disk inode */
827 if (ffs_opts->version == 1)
828 membuf = ffs_build_dinode1(&din.ffs1_din, &dirbuf, cur,
831 membuf = ffs_build_dinode2(&din.ffs2_din, &dirbuf, cur,
834 if (debug & DEBUG_FS_POPULATE_NODE) {
835 printf("ffs_populate_dir: writing ino %d, %s",
836 cur->inode->ino, inode_type(cur->type));
837 if (cur->inode->nlink > 1)
838 printf(", nlink %d", cur->inode->nlink);
842 if (membuf != NULL) {
843 ffs_write_file(&din, cur->inode->ino, membuf, fsopts);
844 } else if (S_ISREG(cur->type)) {
845 ffs_write_file(&din, cur->inode->ino,
846 (cur->contents) ? cur->contents : path, fsopts);
848 assert (! S_ISDIR(cur->type));
849 ffs_write_inode(&din, cur->inode->ino, fsopts);
854 * pass 3: write out sub-directories
856 if (debug & DEBUG_FS_POPULATE)
857 printf("ffs_populate_dir: PASS 3 dir %s\n", dir);
858 for (cur = root; cur != NULL; cur = cur->next) {
859 if (cur->child == NULL)
861 if ((size_t)snprintf(path, sizeof(path), "%s/%s", dir,
862 cur->name) >= sizeof(path))
863 errx(1, "Pathname too long.");
864 if (! ffs_populate_dir(path, cur->child, fsopts))
868 if (debug & DEBUG_FS_POPULATE)
869 printf("ffs_populate_dir: DONE dir %s\n", dir);
872 if (dirbuf.buf != NULL)
879 ffs_write_file(union dinode *din, uint32_t ino, void *buf, fsinfo_t *fsopts)
883 off_t bufleft, chunk, offset;
887 ffs_opt_t *ffs_opts = fsopts->fs_specific;
888 struct vnode vp = { fsopts, NULL };
890 assert (din != NULL);
891 assert (buf != NULL);
892 assert (fsopts != NULL);
893 assert (ffs_opts != NULL);
895 isfile = S_ISREG(DIP(din, mode));
900 in.i_fs = (struct fs *)fsopts->superblock;
903 if (debug & DEBUG_FS_WRITE_FILE) {
905 "ffs_write_file: ino %u, din %p, isfile %d, %s, size %lld",
906 ino, din, isfile, inode_type(DIP(din, mode) & S_IFMT),
907 (long long)DIP(din, size));
909 printf(", file '%s'\n", (char *)buf);
911 printf(", buffer %p\n", buf);
915 in.i_size = DIP(din, size);
916 if (ffs_opts->version == 1)
917 memcpy(&in.i_din.ffs1_din, &din->ffs1_din,
918 sizeof(in.i_din.ffs1_din));
920 memcpy(&in.i_din.ffs2_din, &din->ffs2_din,
921 sizeof(in.i_din.ffs2_din));
923 if (DIP(din, size) == 0)
924 goto write_inode_and_leave; /* mmm, cheating */
927 fbuf = emalloc(ffs_opts->bsize);
928 if ((ffd = open((char *)buf, O_RDONLY, 0444)) == -1) {
929 warn("Can't open `%s' for reading", (char *)buf);
930 goto leave_ffs_write_file;
937 for (bufleft = DIP(din, size); bufleft > 0; bufleft -= chunk) {
938 chunk = MIN(bufleft, ffs_opts->bsize);
941 else if ((nread = read(ffd, fbuf, chunk)) == -1)
942 err(EXIT_FAILURE, "Reading `%s', %lld bytes to go",
943 (char *)buf, (long long)bufleft);
944 else if (nread != chunk)
945 errx(EXIT_FAILURE, "Reading `%s', %lld bytes to go, "
946 "read %zd bytes, expected %ju bytes, does "
947 "metalog size= attribute mismatch source size?",
948 (char *)buf, (long long)bufleft, nread,
952 offset = DIP(din, size) - bufleft;
953 if (debug & DEBUG_FS_WRITE_FILE_BLOCK)
955 "ffs_write_file: write %p offset %lld size %lld left %lld\n",
956 p, (long long)offset,
957 (long long)chunk, (long long)bufleft);
959 * XXX if holey support is desired, do the check here
961 * XXX might need to write out last bit in fragroundup
962 * sized chunk. however, ffs_balloc() handles this for us
964 errno = ffs_balloc(&in, offset, chunk, &bp);
968 "Writing inode %d (%s), bytes %lld + %lld",
970 isfile ? (char *)buf :
971 inode_type(DIP(din, mode) & S_IFMT),
972 (long long)offset, (long long)chunk);
973 memcpy(bp->b_data, p, chunk);
976 goto bad_ffs_write_file;
982 write_inode_and_leave:
983 ffs_write_inode(&in.i_din, in.i_number, fsopts);
985 leave_ffs_write_file:
994 ffs_dump_dirbuf(dirbuf_t *dbuf, const char *dir, int needswap)
1000 assert (dbuf != NULL);
1001 assert (dir != NULL);
1002 printf("ffs_dump_dirbuf: dir %s size %d cur %d\n",
1003 dir, dbuf->size, dbuf->cur);
1005 for (i = 0; i < dbuf->size; ) {
1006 de = (struct direct *)(dbuf->buf + i);
1007 reclen = ufs_rw16(de->d_reclen, needswap);
1009 " inode %4d %7s offset %4d reclen %3d namlen %3d name %s\n",
1010 ufs_rw32(de->d_ino, needswap),
1011 inode_type(DTTOIF(de->d_type)), i, reclen,
1012 de->d_namlen, de->d_name);
1019 ffs_make_dirbuf(dirbuf_t *dbuf, const char *name, fsnode *node, int needswap)
1021 struct direct de, *dp;
1022 uint16_t llen, reclen;
1025 assert (dbuf != NULL);
1026 assert (name != NULL);
1027 assert (node != NULL);
1028 /* create direct entry */
1029 (void)memset(&de, 0, sizeof(de));
1030 de.d_ino = ufs_rw32(node->inode->ino, needswap);
1031 de.d_type = IFTODT(node->type);
1032 de.d_namlen = (uint8_t)strlen(name);
1033 strcpy(de.d_name, name);
1034 reclen = DIRSIZ_SWAP(0, &de, needswap);
1035 de.d_reclen = ufs_rw16(reclen, needswap);
1037 dp = (struct direct *)(dbuf->buf + dbuf->cur);
1040 llen = DIRSIZ_SWAP(0, dp, needswap);
1042 if (debug & DEBUG_FS_MAKE_DIRBUF)
1044 "ffs_make_dirbuf: dbuf siz %d cur %d lastlen %d\n"
1045 " ino %d type %d reclen %d namlen %d name %.30s\n",
1046 dbuf->size, dbuf->cur, llen,
1047 ufs_rw32(de.d_ino, needswap), de.d_type, reclen,
1048 de.d_namlen, de.d_name);
1050 if (reclen + dbuf->cur + llen > roundup(dbuf->size, DIRBLKSIZ)) {
1051 if (debug & DEBUG_FS_MAKE_DIRBUF)
1052 printf("ffs_make_dirbuf: growing buf to %d\n",
1053 dbuf->size + DIRBLKSIZ);
1054 newbuf = erealloc(dbuf->buf, dbuf->size + DIRBLKSIZ);
1056 dbuf->size += DIRBLKSIZ;
1057 memset(dbuf->buf + dbuf->size - DIRBLKSIZ, 0, DIRBLKSIZ);
1058 dbuf->cur = dbuf->size - DIRBLKSIZ;
1059 } else if (dp) { /* shrink end of previous */
1060 dp->d_reclen = ufs_rw16(llen,needswap);
1063 dp = (struct direct *)(dbuf->buf + dbuf->cur);
1064 memcpy(dp, &de, reclen);
1065 dp->d_reclen = ufs_rw16(dbuf->size - dbuf->cur, needswap);
1069 * cribbed from sys/ufs/ffs/ffs_alloc.c
1072 ffs_write_inode(union dinode *dp, uint32_t ino, const fsinfo_t *fsopts)
1075 struct ufs1_dinode *dp1;
1076 struct ufs2_dinode *dp2, *dip;
1082 char sbbuf[FFS_MAXBSIZE];
1083 uint32_t initediblk;
1084 ffs_opt_t *ffs_opts = fsopts->fs_specific;
1086 assert (dp != NULL);
1088 assert (fsopts != NULL);
1089 assert (ffs_opts != NULL);
1091 fs = (struct fs *)fsopts->superblock;
1092 cg = ino_to_cg(fs, ino);
1093 cgino = ino % fs->fs_ipg;
1094 if (debug & DEBUG_FS_WRITE_INODE)
1095 printf("ffs_write_inode: din %p ino %u cg %d cgino %d\n",
1096 dp, ino, cg, cgino);
1098 ffs_rdfs(fsbtodb(fs, cgtod(fs, cg)), (int)fs->fs_cgsize, &sbbuf,
1100 cgp = (struct cg *)sbbuf;
1101 if (!cg_chkmagic_swap(cgp, fsopts->needswap))
1102 errx(1, "ffs_write_inode: cg %d: bad magic number", cg);
1104 assert (isclr(cg_inosused_swap(cgp, fsopts->needswap), cgino));
1106 buf = emalloc(fs->fs_bsize);
1107 dp1 = (struct ufs1_dinode *)buf;
1108 dp2 = (struct ufs2_dinode *)buf;
1110 if (fs->fs_cstotal.cs_nifree == 0)
1111 errx(1, "ffs_write_inode: fs out of inodes for ino %u",
1113 if (fs->fs_cs(fs, cg).cs_nifree == 0)
1115 "ffs_write_inode: cg %d out of inodes for ino %u",
1117 setbit(cg_inosused_swap(cgp, fsopts->needswap), cgino);
1118 ufs_add32(cgp->cg_cs.cs_nifree, -1, fsopts->needswap);
1119 fs->fs_cstotal.cs_nifree--;
1120 fs->fs_cs(fs, cg).cs_nifree--;
1121 if (S_ISDIR(DIP(dp, mode))) {
1122 ufs_add32(cgp->cg_cs.cs_ndir, 1, fsopts->needswap);
1123 fs->fs_cstotal.cs_ndir++;
1124 fs->fs_cs(fs, cg).cs_ndir++;
1128 * Initialize inode blocks on the fly for UFS2.
1130 initediblk = ufs_rw32(cgp->cg_initediblk, fsopts->needswap);
1131 if (ffs_opts->version == 2 && cgino + INOPB(fs) > initediblk &&
1132 initediblk < ufs_rw32(cgp->cg_niblk, fsopts->needswap)) {
1133 memset(buf, 0, fs->fs_bsize);
1134 dip = (struct ufs2_dinode *)buf;
1135 for (i = 0; i < INOPB(fs); i++) {
1136 dip->di_gen = random();
1139 ffs_wtfs(fsbtodb(fs, ino_to_fsba(fs,
1140 cg * fs->fs_ipg + initediblk)),
1141 fs->fs_bsize, buf, fsopts);
1142 initediblk += INOPB(fs);
1143 cgp->cg_initediblk = ufs_rw32(initediblk, fsopts->needswap);
1147 ffs_wtfs(fsbtodb(fs, cgtod(fs, cg)), (int)fs->fs_cgsize, &sbbuf,
1150 /* now write inode */
1151 d = fsbtodb(fs, ino_to_fsba(fs, ino));
1152 ffs_rdfs(d, fs->fs_bsize, buf, fsopts);
1153 if (fsopts->needswap) {
1154 if (ffs_opts->version == 1)
1155 ffs_dinode1_swap(&dp->ffs1_din,
1156 &dp1[ino_to_fsbo(fs, ino)]);
1158 ffs_dinode2_swap(&dp->ffs2_din,
1159 &dp2[ino_to_fsbo(fs, ino)]);
1161 if (ffs_opts->version == 1)
1162 dp1[ino_to_fsbo(fs, ino)] = dp->ffs1_din;
1164 dp2[ino_to_fsbo(fs, ino)] = dp->ffs2_din;
1166 ffs_wtfs(d, fs->fs_bsize, buf, fsopts);
1171 panic(const char *fmt, ...)