1 /* $NetBSD: ffs.c,v 1.45 2011/10/09 22:49:26 christos Exp $ */
4 * SPDX-License-Identifier: BSD-4-Clause
6 * Copyright (c) 2001 Wasabi Systems, Inc.
9 * Written by Luke Mewburn for Wasabi Systems, Inc.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed for the NetBSD Project by
22 * Wasabi Systems, Inc.
23 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
24 * or promote products derived from this software without specific prior
27 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
40 * Copyright (c) 1982, 1986, 1989, 1993
41 * The Regents of the University of California. All rights reserved.
43 * Redistribution and use in source and binary forms, with or without
44 * modification, are permitted provided that the following conditions
46 * 1. Redistributions of source code must retain the above copyright
47 * notice, this list of conditions and the following disclaimer.
48 * 2. Redistributions in binary form must reproduce the above copyright
49 * notice, this list of conditions and the following disclaimer in the
50 * documentation and/or other materials provided with the distribution.
51 * 3. Neither the name of the University nor the names of its contributors
52 * may be used to endorse or promote products derived from this software
53 * without specific prior written permission.
55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
67 * @(#)ffs_alloc.c 8.19 (Berkeley) 7/13/95
70 #include <sys/cdefs.h>
71 __FBSDID("$FreeBSD$");
73 #if HAVE_NBTOOL_CONFIG_H
74 #include "nbtool_config.h"
77 #include <sys/param.h>
79 #include <sys/mount.h>
96 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
97 #include <sys/statvfs.h>
100 #include <ufs/ufs/dinode.h>
101 #include <ufs/ufs/dir.h>
102 #include <ufs/ffs/fs.h>
105 #include "ffs/ufs_bswap.h"
106 #include "ffs/ufs_inode.h"
107 #include "ffs/newfs_extern.h"
108 #include "ffs/ffs_extern.h"
111 #define DIP(dp, field) \
112 ((ffs_opts->version == 1) ? \
113 (dp)->ffs1_din.di_##field : (dp)->ffs2_din.di_##field)
116 * Various file system defaults (cribbed from newfs(8)).
118 #define DFL_FRAGSIZE 4096 /* fragment size */
119 #define DFL_BLKSIZE 32768 /* block size */
120 #define DFL_SECSIZE 512 /* sector size */
121 #define DFL_CYLSPERGROUP 65536 /* cylinders per group */
122 #define DFL_FRAGSPERINODE 4 /* fragments per inode */
123 #define DFL_ROTDELAY 0 /* rotational delay */
124 #define DFL_NRPOS 1 /* rotational positions */
125 #define DFL_RPM 3600 /* rpm of disk */
126 #define DFL_NSECTORS 64 /* # of sectors */
127 #define DFL_NTRACKS 16 /* # of tracks */
131 u_char *buf; /* buf for directory */
132 doff_t size; /* full size of buf */
133 doff_t cur; /* offset of current entry */
137 static int ffs_create_image(const char *, fsinfo_t *);
138 static void ffs_dump_fsinfo(fsinfo_t *);
139 static void ffs_dump_dirbuf(dirbuf_t *, const char *, int);
140 static void ffs_make_dirbuf(dirbuf_t *, const char *, fsnode *, int);
141 static int ffs_populate_dir(const char *, fsnode *, fsinfo_t *);
142 static void ffs_size_dir(fsnode *, fsinfo_t *);
143 static void ffs_validate(const char *, fsnode *, fsinfo_t *);
144 static void ffs_write_file(union dinode *, uint32_t, void *, fsinfo_t *);
145 static void ffs_write_inode(union dinode *, uint32_t, const fsinfo_t *);
146 static void *ffs_build_dinode1(struct ufs1_dinode *, dirbuf_t *, fsnode *,
147 fsnode *, fsinfo_t *);
148 static void *ffs_build_dinode2(struct ufs2_dinode *, dirbuf_t *, fsnode *,
149 fsnode *, fsinfo_t *);
152 /* publicly visible functions */
155 ffs_prep_opts(fsinfo_t *fsopts)
157 ffs_opt_t *ffs_opts = ecalloc(1, sizeof(*ffs_opts));
159 const option_t ffs_options[] = {
160 { 'b', "bsize", &ffs_opts->bsize, OPT_INT32,
161 1, INT_MAX, "block size" },
162 { 'f', "fsize", &ffs_opts->fsize, OPT_INT32,
163 1, INT_MAX, "fragment size" },
164 { 'd', "density", &ffs_opts->density, OPT_INT32,
165 1, INT_MAX, "bytes per inode" },
166 { 'm', "minfree", &ffs_opts->minfree, OPT_INT32,
168 { 'M', "maxbpg", &ffs_opts->maxbpg, OPT_INT32,
169 1, INT_MAX, "max blocks per file in a cg" },
170 { 'a', "avgfilesize", &ffs_opts->avgfilesize, OPT_INT32,
171 1, INT_MAX, "expected average file size" },
172 { 'n', "avgfpdir", &ffs_opts->avgfpdir, OPT_INT32,
173 1, INT_MAX, "expected # of files per directory" },
174 { 'x', "extent", &ffs_opts->maxbsize, OPT_INT32,
175 1, INT_MAX, "maximum # extent size" },
176 { 'g', "maxbpcg", &ffs_opts->maxblkspercg, OPT_INT32,
177 1, INT_MAX, "max # of blocks per group" },
178 { 'v', "version", &ffs_opts->version, OPT_INT32,
179 1, 2, "UFS version" },
180 { 'o', "optimization", NULL, OPT_STRBUF,
181 0, 0, "Optimization (time|space)" },
182 { 'l', "label", ffs_opts->label, OPT_STRARRAY,
183 1, sizeof(ffs_opts->label), "UFS label" },
184 { 's', "softupdates", &ffs_opts->softupdates, OPT_INT32,
185 0, 1, "enable softupdates" },
192 ffs_opts->density= -1;
193 ffs_opts->minfree= -1;
194 ffs_opts->optimization= -1;
195 ffs_opts->maxcontig= -1;
196 ffs_opts->maxbpg= -1;
197 ffs_opts->avgfilesize= -1;
198 ffs_opts->avgfpdir= -1;
199 ffs_opts->version = 1;
200 ffs_opts->softupdates = 0;
202 fsopts->fs_specific = ffs_opts;
203 fsopts->fs_options = copy_opts(ffs_options);
207 ffs_cleanup_opts(fsinfo_t *fsopts)
209 free(fsopts->fs_specific);
210 free(fsopts->fs_options);
214 ffs_parse_opts(const char *option, fsinfo_t *fsopts)
216 ffs_opt_t *ffs_opts = fsopts->fs_specific;
217 option_t *ffs_options = fsopts->fs_options;
222 assert(option != NULL);
223 assert(fsopts != NULL);
224 assert(ffs_opts != NULL);
226 if (debug & DEBUG_FS_PARSE_OPTS)
227 printf("ffs_parse_opts: got `%s'\n", option);
229 rv = set_option(ffs_options, option, buf, sizeof(buf));
233 if (ffs_options[rv].name == NULL)
236 switch (ffs_options[rv].letter) {
238 if (strcmp(buf, "time") == 0) {
239 ffs_opts->optimization = FS_OPTTIME;
240 } else if (strcmp(buf, "space") == 0) {
241 ffs_opts->optimization = FS_OPTSPACE;
243 warnx("Invalid optimization `%s'", buf);
255 ffs_makefs(const char *image, const char *dir, fsnode *root, fsinfo_t *fsopts)
257 struct fs *superblock;
258 struct timeval start;
260 assert(image != NULL);
262 assert(root != NULL);
263 assert(fsopts != NULL);
265 if (debug & DEBUG_FS_MAKEFS)
266 printf("ffs_makefs: image %s directory %s root %p\n",
269 /* validate tree and options */
271 ffs_validate(dir, root, fsopts);
272 TIMER_RESULTS(start, "ffs_validate");
274 printf("Calculated size of `%s': %lld bytes, %lld inodes\n",
275 image, (long long)fsopts->size, (long long)fsopts->inodes);
279 if (ffs_create_image(image, fsopts) == -1)
280 errx(1, "Image file `%s' not created.", image);
281 TIMER_RESULTS(start, "ffs_create_image");
283 fsopts->curinode = UFS_ROOTINO;
285 if (debug & DEBUG_FS_MAKEFS)
289 printf("Populating `%s'\n", image);
291 if (! ffs_populate_dir(dir, root, fsopts))
292 errx(1, "Image file `%s' not populated.", image);
293 TIMER_RESULTS(start, "ffs_populate_dir");
295 /* ensure no outstanding buffers remain */
296 if (debug & DEBUG_FS_MAKEFS)
299 /* update various superblock parameters */
300 superblock = fsopts->superblock;
301 superblock->fs_fmod = 0;
302 superblock->fs_old_cstotal.cs_ndir = superblock->fs_cstotal.cs_ndir;
303 superblock->fs_old_cstotal.cs_nbfree = superblock->fs_cstotal.cs_nbfree;
304 superblock->fs_old_cstotal.cs_nifree = superblock->fs_cstotal.cs_nifree;
305 superblock->fs_old_cstotal.cs_nffree = superblock->fs_cstotal.cs_nffree;
307 /* write out superblock; image is now complete */
308 ffs_write_superblock(fsopts->superblock, fsopts);
309 if (close(fsopts->fd) == -1)
310 err(1, "Closing `%s'", image);
312 printf("Image `%s' complete\n", image);
315 /* end of public functions */
319 ffs_validate(const char *dir, fsnode *root, fsinfo_t *fsopts)
323 int32_t spc, nspf, ncyl, fssize;
325 ffs_opt_t *ffs_opts = fsopts->fs_specific;
328 assert(root != NULL);
329 assert(fsopts != NULL);
330 assert(ffs_opts != NULL);
332 if (debug & DEBUG_FS_VALIDATE) {
333 printf("ffs_validate: before defaults set:\n");
334 ffs_dump_fsinfo(fsopts);
337 /* set FFS defaults */
338 if (fsopts->sectorsize == -1)
339 fsopts->sectorsize = DFL_SECSIZE;
340 if (ffs_opts->fsize == -1)
341 ffs_opts->fsize = MAX(DFL_FRAGSIZE, fsopts->sectorsize);
342 if (ffs_opts->bsize == -1)
343 ffs_opts->bsize = MIN(DFL_BLKSIZE, 8 * ffs_opts->fsize);
344 if (ffs_opts->cpg == -1)
345 ffs_opts->cpg = DFL_CYLSPERGROUP;
347 ffs_opts->cpgflg = 1;
348 /* fsopts->density is set below */
349 if (ffs_opts->nsectors == -1)
350 ffs_opts->nsectors = DFL_NSECTORS;
351 if (ffs_opts->minfree == -1)
352 ffs_opts->minfree = MINFREE;
353 if (ffs_opts->optimization == -1)
354 ffs_opts->optimization = DEFAULTOPT;
355 if (ffs_opts->maxcontig == -1)
356 ffs_opts->maxcontig =
357 MAX(1, MIN(MAXPHYS, FFS_MAXBSIZE) / ffs_opts->bsize);
359 if (ffs_opts->maxbpg == -1)
360 ffs_opts->maxbpg = ffs_opts->bsize / sizeof(int32_t);
361 if (ffs_opts->avgfilesize == -1)
362 ffs_opts->avgfilesize = AVFILESIZ;
363 if (ffs_opts->avgfpdir == -1)
364 ffs_opts->avgfpdir = AFPDIR;
366 if (fsopts->maxsize > 0 &&
367 roundup(fsopts->minsize, ffs_opts->bsize) > fsopts->maxsize)
368 errx(1, "`%s' minsize of %lld rounded up to ffs bsize of %d "
369 "exceeds maxsize %lld. Lower bsize, or round the minimum "
370 "and maximum sizes to bsize.", dir,
371 (long long)fsopts->minsize, ffs_opts->bsize,
372 (long long)fsopts->maxsize);
374 /* calculate size of tree */
375 ffs_size_dir(root, fsopts);
376 fsopts->inodes += UFS_ROOTINO; /* include first two inodes */
378 if (debug & DEBUG_FS_VALIDATE)
379 printf("ffs_validate: size of tree: %lld bytes, %lld inodes\n",
380 (long long)fsopts->size, (long long)fsopts->inodes);
382 /* add requested slop */
383 fsopts->size += fsopts->freeblocks;
384 fsopts->inodes += fsopts->freefiles;
385 if (fsopts->freefilepc > 0)
387 fsopts->inodes * (100 + fsopts->freefilepc) / 100;
388 if (fsopts->freeblockpc > 0)
390 fsopts->size * (100 + fsopts->freeblockpc) / 100;
392 /* add space needed for superblocks */
394 * The old SBOFF (SBLOCK_UFS1) is used here because makefs is
395 * typically used for small filesystems where space matters.
396 * XXX make this an option.
398 fsopts->size += (SBLOCK_UFS1 + SBLOCKSIZE) * ncg;
399 /* add space needed to store inodes, x3 for blockmaps, etc */
400 if (ffs_opts->version == 1)
401 fsopts->size += ncg * DINODE1_SIZE *
402 roundup(fsopts->inodes / ncg,
403 ffs_opts->bsize / DINODE1_SIZE);
405 fsopts->size += ncg * DINODE2_SIZE *
406 roundup(fsopts->inodes / ncg,
407 ffs_opts->bsize / DINODE2_SIZE);
410 if (ffs_opts->minfree > 0)
412 fsopts->size * (100 + ffs_opts->minfree) / 100;
414 * XXX any other fs slop to add, such as csum's, bitmaps, etc ??
417 if (fsopts->size < fsopts->minsize) /* ensure meets minimum size */
418 fsopts->size = fsopts->minsize;
420 /* round up to the next block */
421 fsopts->size = roundup(fsopts->size, ffs_opts->bsize);
423 /* round up to requested block size, if any */
424 if (fsopts->roundup > 0)
425 fsopts->size = roundup(fsopts->size, fsopts->roundup);
427 /* calculate density if necessary */
428 if (ffs_opts->density == -1)
429 ffs_opts->density = fsopts->size / fsopts->inodes + 1;
431 if (debug & DEBUG_FS_VALIDATE) {
432 printf("ffs_validate: after defaults set:\n");
433 ffs_dump_fsinfo(fsopts);
434 printf("ffs_validate: dir %s; %lld bytes, %lld inodes\n",
435 dir, (long long)fsopts->size, (long long)fsopts->inodes);
437 /* now check calculated sizes vs requested sizes */
438 if (fsopts->maxsize > 0 && fsopts->size > fsopts->maxsize) {
439 errx(1, "`%s' size of %lld is larger than the maxsize of %lld.",
440 dir, (long long)fsopts->size, (long long)fsopts->maxsize);
446 ffs_dump_fsinfo(fsinfo_t *f)
449 ffs_opt_t *fs = f->fs_specific;
451 printf("fsopts at %p\n", f);
453 printf("\tsize %lld, inodes %lld, curinode %u\n",
454 (long long)f->size, (long long)f->inodes, f->curinode);
456 printf("\tminsize %lld, maxsize %lld\n",
457 (long long)f->minsize, (long long)f->maxsize);
458 printf("\tfree files %lld, freefile %% %d\n",
459 (long long)f->freefiles, f->freefilepc);
460 printf("\tfree blocks %lld, freeblock %% %d\n",
461 (long long)f->freeblocks, f->freeblockpc);
462 printf("\tneedswap %d, sectorsize %d\n", f->needswap, f->sectorsize);
464 printf("\tbsize %d, fsize %d, cpg %d, density %d\n",
465 fs->bsize, fs->fsize, fs->cpg, fs->density);
466 printf("\tnsectors %d, rpm %d, minfree %d\n",
467 fs->nsectors, fs->rpm, fs->minfree);
468 printf("\tmaxcontig %d, maxbpg %d\n",
469 fs->maxcontig, fs->maxbpg);
470 printf("\toptimization %s\n",
471 fs->optimization == FS_OPTSPACE ? "space" : "time");
476 ffs_create_image(const char *image, fsinfo_t *fsopts)
478 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
485 int oflags = O_RDWR | O_CREAT;
488 assert (image != NULL);
489 assert (fsopts != NULL);
492 if (fsopts->offset == 0)
494 if ((fsopts->fd = open(image, oflags, 0666)) == -1) {
495 warn("Can't open `%s' for writing", image);
500 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
501 if (fstatvfs(fsopts->fd, &sfs) == -1) {
504 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
505 warn("can't fstatvfs `%s', using default %d byte chunk",
508 bufsize = sfs.f_iosize;
510 bufrem = fsopts->size;
511 if (fsopts->sparse) {
512 if (ftruncate(fsopts->fd, bufrem) == -1) {
513 warn("sparse option disabled.");
517 if (fsopts->sparse) {
518 /* File truncated at bufrem. Remaining is 0 */
522 if (debug & DEBUG_FS_CREATE_IMAGE)
523 printf("zero-ing image `%s', %lld sectors, "
524 "using %d byte chunks\n", image, (long long)bufrem,
526 buf = ecalloc(1, bufsize);
529 if (fsopts->offset != 0)
530 if (lseek(fsopts->fd, fsopts->offset, SEEK_SET) == -1) {
537 i = write(fsopts->fd, buf, MIN(bufsize, bufrem));
539 warn("zeroing image, %lld bytes to go",
549 /* make the file system */
550 if (debug & DEBUG_FS_CREATE_IMAGE)
551 printf("calling mkfs(\"%s\", ...)\n", image);
553 if (stampst.st_ino != 0)
554 tstamp = stampst.st_ctime;
556 tstamp = start_time.tv_sec;
560 fs = ffs_mkfs(image, fsopts, tstamp);
561 fsopts->superblock = (void *)fs;
562 if (debug & DEBUG_FS_CREATE_IMAGE) {
565 t = (time_t)((struct fs *)fsopts->superblock)->fs_time;
566 printf("mkfs returned %p; fs_time %s",
567 fsopts->superblock, ctime(&t));
568 printf("fs totals: nbfree %lld, nffree %lld, nifree %lld, ndir %lld\n",
569 (long long)fs->fs_cstotal.cs_nbfree,
570 (long long)fs->fs_cstotal.cs_nffree,
571 (long long)fs->fs_cstotal.cs_nifree,
572 (long long)fs->fs_cstotal.cs_ndir);
575 if (fs->fs_cstotal.cs_nifree + UFS_ROOTINO < fsopts->inodes) {
577 "Image file `%s' has %lld free inodes; %lld are required.",
579 (long long)(fs->fs_cstotal.cs_nifree + UFS_ROOTINO),
580 (long long)fsopts->inodes);
588 ffs_size_dir(fsnode *root, fsinfo_t *fsopts)
590 struct direct tmpdir;
592 int curdirsize, this;
593 ffs_opt_t *ffs_opts = fsopts->fs_specific;
595 /* node may be NULL (empty directory) */
596 assert(fsopts != NULL);
597 assert(ffs_opts != NULL);
599 if (debug & DEBUG_FS_SIZE_DIR)
600 printf("ffs_size_dir: entry: bytes %lld inodes %lld\n",
601 (long long)fsopts->size, (long long)fsopts->inodes);
603 #define ADDDIRENT(e) do { \
604 tmpdir.d_namlen = strlen((e)); \
605 this = DIRSIZ_SWAP(0, &tmpdir, 0); \
606 if (debug & DEBUG_FS_SIZE_DIR_ADD_DIRENT) \
607 printf("ADDDIRENT: was: %s (%d) this %d cur %d\n", \
608 e, tmpdir.d_namlen, this, curdirsize); \
609 if (this + curdirsize > roundup(curdirsize, DIRBLKSIZ)) \
610 curdirsize = roundup(curdirsize, DIRBLKSIZ); \
611 curdirsize += this; \
612 if (debug & DEBUG_FS_SIZE_DIR_ADD_DIRENT) \
613 printf("ADDDIRENT: now: %s (%d) this %d cur %d\n", \
614 e, tmpdir.d_namlen, this, curdirsize); \
618 * XXX this needs to take into account extra space consumed
619 * by indirect blocks, etc.
621 #define ADDSIZE(x) do { \
622 fsopts->size += roundup((x), ffs_opts->fsize); \
626 for (node = root; node != NULL; node = node->next) {
627 ADDDIRENT(node->name);
628 if (node == root) { /* we're at "." */
629 assert(strcmp(node->name, ".") == 0);
631 } else if ((node->inode->flags & FI_SIZED) == 0) {
632 /* don't count duplicate names */
633 node->inode->flags |= FI_SIZED;
634 if (debug & DEBUG_FS_SIZE_DIR_NODE)
635 printf("ffs_size_dir: `%s' size %lld\n",
637 (long long)node->inode->st.st_size);
639 if (node->type == S_IFREG)
640 ADDSIZE(node->inode->st.st_size);
641 if (node->type == S_IFLNK) {
644 slen = strlen(node->symlink) + 1;
645 if (slen >= (ffs_opts->version == 1 ?
651 if (node->type == S_IFDIR)
652 ffs_size_dir(node->child, fsopts);
656 if (debug & DEBUG_FS_SIZE_DIR)
657 printf("ffs_size_dir: exit: size %lld inodes %lld\n",
658 (long long)fsopts->size, (long long)fsopts->inodes);
662 ffs_build_dinode1(struct ufs1_dinode *dinp, dirbuf_t *dbufp, fsnode *cur,
663 fsnode *root, fsinfo_t *fsopts)
667 struct stat *st = stampst.st_ino != 0 ? &stampst : &cur->inode->st;
669 memset(dinp, 0, sizeof(*dinp));
670 dinp->di_mode = cur->inode->st.st_mode;
671 dinp->di_nlink = cur->inode->nlink;
672 dinp->di_size = cur->inode->st.st_size;
673 #if HAVE_STRUCT_STAT_ST_FLAGS
674 dinp->di_flags = cur->inode->st.st_flags;
676 dinp->di_gen = random();
677 dinp->di_uid = cur->inode->st.st_uid;
678 dinp->di_gid = cur->inode->st.st_gid;
680 dinp->di_atime = st->st_atime;
681 dinp->di_mtime = st->st_mtime;
682 dinp->di_ctime = st->st_ctime;
683 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
684 dinp->di_atimensec = st->st_atimensec;
685 dinp->di_mtimensec = st->st_mtimensec;
686 dinp->di_ctimensec = st->st_ctimensec;
688 /* not set: di_db, di_ib, di_blocks, di_spare */
691 if (cur == root) { /* "."; write dirbuf */
693 dinp->di_size = dbufp->size;
694 } else if (S_ISBLK(cur->type) || S_ISCHR(cur->type)) {
695 dinp->di_size = 0; /* a device */
697 ufs_rw32(cur->inode->st.st_rdev, fsopts->needswap);
698 } else if (S_ISLNK(cur->type)) { /* symlink */
699 slen = strlen(cur->symlink);
700 if (slen < UFS1_MAXSYMLINKLEN) { /* short link */
701 memcpy(dinp->di_db, cur->symlink, slen);
703 membuf = cur->symlink;
704 dinp->di_size = slen;
710 ffs_build_dinode2(struct ufs2_dinode *dinp, dirbuf_t *dbufp, fsnode *cur,
711 fsnode *root, fsinfo_t *fsopts)
715 struct stat *st = stampst.st_ino != 0 ? &stampst : &cur->inode->st;
717 memset(dinp, 0, sizeof(*dinp));
718 dinp->di_mode = cur->inode->st.st_mode;
719 dinp->di_nlink = cur->inode->nlink;
720 dinp->di_size = cur->inode->st.st_size;
721 #if HAVE_STRUCT_STAT_ST_FLAGS
722 dinp->di_flags = cur->inode->st.st_flags;
724 dinp->di_gen = random();
725 dinp->di_uid = cur->inode->st.st_uid;
726 dinp->di_gid = cur->inode->st.st_gid;
728 dinp->di_atime = st->st_atime;
729 dinp->di_mtime = st->st_mtime;
730 dinp->di_ctime = st->st_ctime;
731 #if HAVE_STRUCT_STAT_BIRTHTIME
732 dinp->di_birthtime = st->st_birthtime;
734 dinp->di_birthtime = st->st_ctime;
736 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
737 dinp->di_atimensec = st->st_atimensec;
738 dinp->di_mtimensec = st->st_mtimensec;
739 dinp->di_ctimensec = st->st_ctimensec;
740 #if HAVE_STRUCT_STAT_BIRTHTIME
741 dinp->di_birthnsec = st->st_birthtimensec;
743 dinp->di_birthnsec = st->st_ctimensec;
747 /* not set: di_db, di_ib, di_blocks, di_spare */
750 if (cur == root) { /* "."; write dirbuf */
752 dinp->di_size = dbufp->size;
753 } else if (S_ISBLK(cur->type) || S_ISCHR(cur->type)) {
754 dinp->di_size = 0; /* a device */
756 ufs_rw64(cur->inode->st.st_rdev, fsopts->needswap);
757 } else if (S_ISLNK(cur->type)) { /* symlink */
758 slen = strlen(cur->symlink);
759 if (slen < UFS2_MAXSYMLINKLEN) { /* short link */
760 memcpy(dinp->di_db, cur->symlink, slen);
762 membuf = cur->symlink;
763 dinp->di_size = slen;
769 ffs_populate_dir(const char *dir, fsnode *root, fsinfo_t *fsopts)
775 char path[MAXPATHLEN + 1];
776 ffs_opt_t *ffs_opts = fsopts->fs_specific;
779 assert(root != NULL);
780 assert(fsopts != NULL);
781 assert(ffs_opts != NULL);
783 (void)memset(&dirbuf, 0, sizeof(dirbuf));
785 if (debug & DEBUG_FS_POPULATE)
786 printf("ffs_populate_dir: PASS 1 dir %s node %p\n", dir, root);
789 * pass 1: allocate inode numbers, build directory `file'
791 for (cur = root; cur != NULL; cur = cur->next) {
792 if ((cur->inode->flags & FI_ALLOCATED) == 0) {
793 cur->inode->flags |= FI_ALLOCATED;
794 if (cur == root && cur->parent != NULL)
795 cur->inode->ino = cur->parent->inode->ino;
797 cur->inode->ino = fsopts->curinode;
801 ffs_make_dirbuf(&dirbuf, cur->name, cur, fsopts->needswap);
802 if (cur == root) { /* we're at "."; add ".." */
803 ffs_make_dirbuf(&dirbuf, "..",
804 cur->parent == NULL ? cur : cur->parent->first,
806 root->inode->nlink++; /* count my parent's link */
807 } else if (cur->child != NULL)
808 root->inode->nlink++; /* count my child's link */
811 * XXX possibly write file and long symlinks here,
812 * ensuring that blocks get written before inodes?
813 * otoh, this isn't a real filesystem, so who
814 * cares about ordering? :-)
817 if (debug & DEBUG_FS_POPULATE_DIRBUF)
818 ffs_dump_dirbuf(&dirbuf, dir, fsopts->needswap);
821 * pass 2: write out dirbuf, then non-directories at this level
823 if (debug & DEBUG_FS_POPULATE)
824 printf("ffs_populate_dir: PASS 2 dir %s\n", dir);
825 for (cur = root; cur != NULL; cur = cur->next) {
826 if (cur->inode->flags & FI_WRITTEN)
827 continue; /* skip hard-linked entries */
828 cur->inode->flags |= FI_WRITTEN;
830 if (cur->contents == NULL) {
831 if (snprintf(path, sizeof(path), "%s/%s/%s", cur->root,
832 cur->path, cur->name) >= (int)sizeof(path))
833 errx(1, "Pathname too long.");
836 if (cur->child != NULL)
837 continue; /* child creates own inode */
839 /* build on-disk inode */
840 if (ffs_opts->version == 1)
841 membuf = ffs_build_dinode1(&din.ffs1_din, &dirbuf, cur,
844 membuf = ffs_build_dinode2(&din.ffs2_din, &dirbuf, cur,
847 if (debug & DEBUG_FS_POPULATE_NODE) {
848 printf("ffs_populate_dir: writing ino %d, %s",
849 cur->inode->ino, inode_type(cur->type));
850 if (cur->inode->nlink > 1)
851 printf(", nlink %d", cur->inode->nlink);
855 if (membuf != NULL) {
856 ffs_write_file(&din, cur->inode->ino, membuf, fsopts);
857 } else if (S_ISREG(cur->type)) {
858 ffs_write_file(&din, cur->inode->ino,
859 (cur->contents) ? cur->contents : path, fsopts);
861 assert (! S_ISDIR(cur->type));
862 ffs_write_inode(&din, cur->inode->ino, fsopts);
867 * pass 3: write out sub-directories
869 if (debug & DEBUG_FS_POPULATE)
870 printf("ffs_populate_dir: PASS 3 dir %s\n", dir);
871 for (cur = root; cur != NULL; cur = cur->next) {
872 if (cur->child == NULL)
874 if ((size_t)snprintf(path, sizeof(path), "%s/%s", dir,
875 cur->name) >= sizeof(path))
876 errx(1, "Pathname too long.");
877 if (! ffs_populate_dir(path, cur->child, fsopts))
881 if (debug & DEBUG_FS_POPULATE)
882 printf("ffs_populate_dir: DONE dir %s\n", dir);
885 if (dirbuf.buf != NULL)
892 ffs_write_file(union dinode *din, uint32_t ino, void *buf, fsinfo_t *fsopts)
896 off_t bufleft, chunk, offset;
900 ffs_opt_t *ffs_opts = fsopts->fs_specific;
901 struct vnode vp = { fsopts, NULL };
903 assert (din != NULL);
904 assert (buf != NULL);
905 assert (fsopts != NULL);
906 assert (ffs_opts != NULL);
908 isfile = S_ISREG(DIP(din, mode));
913 in.i_fs = (struct fs *)fsopts->superblock;
916 if (debug & DEBUG_FS_WRITE_FILE) {
918 "ffs_write_file: ino %u, din %p, isfile %d, %s, size %lld",
919 ino, din, isfile, inode_type(DIP(din, mode) & S_IFMT),
920 (long long)DIP(din, size));
922 printf(", file '%s'\n", (char *)buf);
924 printf(", buffer %p\n", buf);
928 in.i_size = DIP(din, size);
929 if (ffs_opts->version == 1)
930 memcpy(&in.i_din.ffs1_din, &din->ffs1_din,
931 sizeof(in.i_din.ffs1_din));
933 memcpy(&in.i_din.ffs2_din, &din->ffs2_din,
934 sizeof(in.i_din.ffs2_din));
936 if (DIP(din, size) == 0)
937 goto write_inode_and_leave; /* mmm, cheating */
940 fbuf = emalloc(ffs_opts->bsize);
941 if ((ffd = open((char *)buf, O_RDONLY, 0444)) == -1) {
942 err(EXIT_FAILURE, "Can't open `%s' for reading", (char *)buf);
949 for (bufleft = DIP(din, size); bufleft > 0; bufleft -= chunk) {
950 chunk = MIN(bufleft, ffs_opts->bsize);
953 else if ((nread = read(ffd, fbuf, chunk)) == -1)
954 err(EXIT_FAILURE, "Reading `%s', %lld bytes to go",
955 (char *)buf, (long long)bufleft);
956 else if (nread != chunk)
957 errx(EXIT_FAILURE, "Reading `%s', %lld bytes to go, "
958 "read %zd bytes, expected %ju bytes, does "
959 "metalog size= attribute mismatch source size?",
960 (char *)buf, (long long)bufleft, nread,
964 offset = DIP(din, size) - bufleft;
965 if (debug & DEBUG_FS_WRITE_FILE_BLOCK)
967 "ffs_write_file: write %p offset %lld size %lld left %lld\n",
968 p, (long long)offset,
969 (long long)chunk, (long long)bufleft);
971 * XXX if holey support is desired, do the check here
973 * XXX might need to write out last bit in fragroundup
974 * sized chunk. however, ffs_balloc() handles this for us
976 errno = ffs_balloc(&in, offset, chunk, &bp);
980 "Writing inode %d (%s), bytes %lld + %lld",
982 isfile ? (char *)buf :
983 inode_type(DIP(din, mode) & S_IFMT),
984 (long long)offset, (long long)chunk);
985 memcpy(bp->b_data, p, chunk);
988 goto bad_ffs_write_file;
994 write_inode_and_leave:
995 ffs_write_inode(&in.i_din, in.i_number, fsopts);
1004 ffs_dump_dirbuf(dirbuf_t *dbuf, const char *dir, int needswap)
1010 assert (dbuf != NULL);
1011 assert (dir != NULL);
1012 printf("ffs_dump_dirbuf: dir %s size %d cur %d\n",
1013 dir, dbuf->size, dbuf->cur);
1015 for (i = 0; i < dbuf->size; ) {
1016 de = (struct direct *)(dbuf->buf + i);
1017 reclen = ufs_rw16(de->d_reclen, needswap);
1019 " inode %4d %7s offset %4d reclen %3d namlen %3d name %s\n",
1020 ufs_rw32(de->d_ino, needswap),
1021 inode_type(DTTOIF(de->d_type)), i, reclen,
1022 de->d_namlen, de->d_name);
1029 ffs_make_dirbuf(dirbuf_t *dbuf, const char *name, fsnode *node, int needswap)
1031 struct direct de, *dp;
1032 uint16_t llen, reclen;
1035 assert (dbuf != NULL);
1036 assert (name != NULL);
1037 assert (node != NULL);
1038 /* create direct entry */
1039 (void)memset(&de, 0, sizeof(de));
1040 de.d_ino = ufs_rw32(node->inode->ino, needswap);
1041 de.d_type = IFTODT(node->type);
1042 de.d_namlen = (uint8_t)strlen(name);
1043 strcpy(de.d_name, name);
1044 reclen = DIRSIZ_SWAP(0, &de, needswap);
1045 de.d_reclen = ufs_rw16(reclen, needswap);
1047 dp = (struct direct *)(dbuf->buf + dbuf->cur);
1050 llen = DIRSIZ_SWAP(0, dp, needswap);
1052 if (debug & DEBUG_FS_MAKE_DIRBUF)
1054 "ffs_make_dirbuf: dbuf siz %d cur %d lastlen %d\n"
1055 " ino %d type %d reclen %d namlen %d name %.30s\n",
1056 dbuf->size, dbuf->cur, llen,
1057 ufs_rw32(de.d_ino, needswap), de.d_type, reclen,
1058 de.d_namlen, de.d_name);
1060 if (reclen + dbuf->cur + llen > roundup(dbuf->size, DIRBLKSIZ)) {
1061 if (debug & DEBUG_FS_MAKE_DIRBUF)
1062 printf("ffs_make_dirbuf: growing buf to %d\n",
1063 dbuf->size + DIRBLKSIZ);
1064 newbuf = erealloc(dbuf->buf, dbuf->size + DIRBLKSIZ);
1066 dbuf->size += DIRBLKSIZ;
1067 memset(dbuf->buf + dbuf->size - DIRBLKSIZ, 0, DIRBLKSIZ);
1068 dbuf->cur = dbuf->size - DIRBLKSIZ;
1069 } else if (dp) { /* shrink end of previous */
1070 dp->d_reclen = ufs_rw16(llen,needswap);
1073 dp = (struct direct *)(dbuf->buf + dbuf->cur);
1074 memcpy(dp, &de, reclen);
1075 dp->d_reclen = ufs_rw16(dbuf->size - dbuf->cur, needswap);
1079 * cribbed from sys/ufs/ffs/ffs_alloc.c
1082 ffs_write_inode(union dinode *dp, uint32_t ino, const fsinfo_t *fsopts)
1085 struct ufs1_dinode *dp1;
1086 struct ufs2_dinode *dp2, *dip;
1092 char sbbuf[FFS_MAXBSIZE];
1093 uint32_t initediblk;
1094 ffs_opt_t *ffs_opts = fsopts->fs_specific;
1096 assert (dp != NULL);
1098 assert (fsopts != NULL);
1099 assert (ffs_opts != NULL);
1101 fs = (struct fs *)fsopts->superblock;
1102 cg = ino_to_cg(fs, ino);
1103 cgino = ino % fs->fs_ipg;
1104 if (debug & DEBUG_FS_WRITE_INODE)
1105 printf("ffs_write_inode: din %p ino %u cg %d cgino %d\n",
1106 dp, ino, cg, cgino);
1108 ffs_rdfs(fsbtodb(fs, cgtod(fs, cg)), (int)fs->fs_cgsize, &sbbuf,
1110 cgp = (struct cg *)sbbuf;
1111 if (!cg_chkmagic_swap(cgp, fsopts->needswap))
1112 errx(1, "ffs_write_inode: cg %d: bad magic number", cg);
1114 assert (isclr(cg_inosused_swap(cgp, fsopts->needswap), cgino));
1116 buf = emalloc(fs->fs_bsize);
1117 dp1 = (struct ufs1_dinode *)buf;
1118 dp2 = (struct ufs2_dinode *)buf;
1120 if (fs->fs_cstotal.cs_nifree == 0)
1121 errx(1, "ffs_write_inode: fs out of inodes for ino %u",
1123 if (fs->fs_cs(fs, cg).cs_nifree == 0)
1125 "ffs_write_inode: cg %d out of inodes for ino %u",
1127 setbit(cg_inosused_swap(cgp, fsopts->needswap), cgino);
1128 ufs_add32(cgp->cg_cs.cs_nifree, -1, fsopts->needswap);
1129 fs->fs_cstotal.cs_nifree--;
1130 fs->fs_cs(fs, cg).cs_nifree--;
1131 if (S_ISDIR(DIP(dp, mode))) {
1132 ufs_add32(cgp->cg_cs.cs_ndir, 1, fsopts->needswap);
1133 fs->fs_cstotal.cs_ndir++;
1134 fs->fs_cs(fs, cg).cs_ndir++;
1138 * Initialize inode blocks on the fly for UFS2.
1140 initediblk = ufs_rw32(cgp->cg_initediblk, fsopts->needswap);
1141 while (ffs_opts->version == 2 && cgino + INOPB(fs) > initediblk &&
1142 initediblk < ufs_rw32(cgp->cg_niblk, fsopts->needswap)) {
1143 memset(buf, 0, fs->fs_bsize);
1144 dip = (struct ufs2_dinode *)buf;
1145 for (i = 0; i < INOPB(fs); i++) {
1146 dip->di_gen = random();
1149 ffs_wtfs(fsbtodb(fs, ino_to_fsba(fs,
1150 cg * fs->fs_ipg + initediblk)),
1151 fs->fs_bsize, buf, fsopts);
1152 initediblk += INOPB(fs);
1153 cgp->cg_initediblk = ufs_rw32(initediblk, fsopts->needswap);
1157 ffs_wtfs(fsbtodb(fs, cgtod(fs, cg)), (int)fs->fs_cgsize, &sbbuf,
1160 /* now write inode */
1161 d = fsbtodb(fs, ino_to_fsba(fs, ino));
1162 ffs_rdfs(d, fs->fs_bsize, buf, fsopts);
1163 if (fsopts->needswap) {
1164 if (ffs_opts->version == 1)
1165 ffs_dinode1_swap(&dp->ffs1_din,
1166 &dp1[ino_to_fsbo(fs, ino)]);
1168 ffs_dinode2_swap(&dp->ffs2_din,
1169 &dp2[ino_to_fsbo(fs, ino)]);
1171 if (ffs_opts->version == 1)
1172 dp1[ino_to_fsbo(fs, ino)] = dp->ffs1_din;
1174 dp2[ino_to_fsbo(fs, ino)] = dp->ffs2_din;
1176 ffs_wtfs(d, fs->fs_bsize, buf, fsopts);
1181 panic(const char *fmt, ...)