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.
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52 * may be used to endorse or promote products derived from this software
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57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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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 #include <sys/param.h>
75 #include <sys/mount.h>
92 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
93 #include <sys/statvfs.h>
96 #include <ufs/ufs/dinode.h>
97 #include <ufs/ufs/dir.h>
98 #include <ufs/ffs/fs.h>
101 #include "ffs/ufs_bswap.h"
102 #include "ffs/ufs_inode.h"
103 #include "ffs/newfs_extern.h"
104 #include "ffs/ffs_extern.h"
107 #define DIP(dp, field) \
108 ((ffs_opts->version == 1) ? \
109 (dp)->ffs1_din.di_##field : (dp)->ffs2_din.di_##field)
112 * Various file system defaults (cribbed from newfs(8)).
114 #define DFL_FRAGSIZE 1024 /* fragment size */
115 #define DFL_BLKSIZE 8192 /* block size */
116 #define DFL_SECSIZE 512 /* sector size */
117 #define DFL_CYLSPERGROUP 65536 /* cylinders per group */
118 #define DFL_FRAGSPERINODE 4 /* fragments per inode */
119 #define DFL_ROTDELAY 0 /* rotational delay */
120 #define DFL_NRPOS 1 /* rotational positions */
121 #define DFL_RPM 3600 /* rpm of disk */
122 #define DFL_NSECTORS 64 /* # of sectors */
123 #define DFL_NTRACKS 16 /* # of tracks */
127 u_char *buf; /* buf for directory */
128 doff_t size; /* full size of buf */
129 doff_t cur; /* offset of current entry */
133 static int ffs_create_image(const char *, fsinfo_t *);
134 static void ffs_dump_fsinfo(fsinfo_t *);
135 static void ffs_dump_dirbuf(dirbuf_t *, const char *, int);
136 static void ffs_make_dirbuf(dirbuf_t *, const char *, fsnode *, int);
137 static int ffs_populate_dir(const char *, fsnode *, fsinfo_t *);
138 static void ffs_size_dir(fsnode *, fsinfo_t *);
139 static void ffs_validate(const char *, fsnode *, fsinfo_t *);
140 static void ffs_write_file(union dinode *, uint32_t, void *, fsinfo_t *);
141 static void ffs_write_inode(union dinode *, uint32_t, const fsinfo_t *);
142 static void *ffs_build_dinode1(struct ufs1_dinode *, dirbuf_t *, fsnode *,
143 fsnode *, fsinfo_t *);
144 static void *ffs_build_dinode2(struct ufs2_dinode *, dirbuf_t *, fsnode *,
145 fsnode *, fsinfo_t *);
148 /* publicly visible functions */
151 ffs_prep_opts(fsinfo_t *fsopts)
153 ffs_opt_t *ffs_opts = ecalloc(1, sizeof(*ffs_opts));
155 const option_t ffs_options[] = {
156 { 'b', "bsize", &ffs_opts->bsize, OPT_INT32,
157 1, INT_MAX, "block size" },
158 { 'f', "fsize", &ffs_opts->fsize, OPT_INT32,
159 1, INT_MAX, "fragment size" },
160 { 'd', "density", &ffs_opts->density, OPT_INT32,
161 1, INT_MAX, "bytes per inode" },
162 { 'm', "minfree", &ffs_opts->minfree, OPT_INT32,
164 { 'M', "maxbpg", &ffs_opts->maxbpg, OPT_INT32,
165 1, INT_MAX, "max blocks per file in a cg" },
166 { 'a', "avgfilesize", &ffs_opts->avgfilesize, OPT_INT32,
167 1, INT_MAX, "expected average file size" },
168 { 'n', "avgfpdir", &ffs_opts->avgfpdir, OPT_INT32,
169 1, INT_MAX, "expected # of files per directory" },
170 { 'x', "extent", &ffs_opts->maxbsize, OPT_INT32,
171 1, INT_MAX, "maximum # extent size" },
172 { 'g', "maxbpcg", &ffs_opts->maxblkspercg, OPT_INT32,
173 1, INT_MAX, "max # of blocks per group" },
174 { 'v', "version", &ffs_opts->version, OPT_INT32,
175 1, 2, "UFS version" },
176 { 'o', "optimization", NULL, OPT_STRBUF,
177 0, 0, "Optimization (time|space)" },
178 { 'l', "label", ffs_opts->label, OPT_STRARRAY,
179 1, sizeof(ffs_opts->label), "UFS label" },
180 { 's', "softupdates", &ffs_opts->softupdates, OPT_INT32,
181 0, 1, "enable softupdates" },
188 ffs_opts->density= -1;
189 ffs_opts->minfree= -1;
190 ffs_opts->optimization= -1;
191 ffs_opts->maxcontig= -1;
192 ffs_opts->maxbpg= -1;
193 ffs_opts->avgfilesize= -1;
194 ffs_opts->avgfpdir= -1;
195 ffs_opts->version = 1;
196 ffs_opts->softupdates = 0;
198 fsopts->fs_specific = ffs_opts;
199 fsopts->fs_options = copy_opts(ffs_options);
203 ffs_cleanup_opts(fsinfo_t *fsopts)
205 free(fsopts->fs_specific);
206 free(fsopts->fs_options);
210 ffs_parse_opts(const char *option, fsinfo_t *fsopts)
212 ffs_opt_t *ffs_opts = fsopts->fs_specific;
213 option_t *ffs_options = fsopts->fs_options;
218 assert(option != NULL);
219 assert(fsopts != NULL);
220 assert(ffs_opts != NULL);
222 if (debug & DEBUG_FS_PARSE_OPTS)
223 printf("ffs_parse_opts: got `%s'\n", option);
225 rv = set_option(ffs_options, option, buf, sizeof(buf));
229 if (ffs_options[rv].name == NULL)
232 switch (ffs_options[rv].letter) {
234 if (strcmp(buf, "time") == 0) {
235 ffs_opts->optimization = FS_OPTTIME;
236 } else if (strcmp(buf, "space") == 0) {
237 ffs_opts->optimization = FS_OPTSPACE;
239 warnx("Invalid optimization `%s'", buf);
251 ffs_makefs(const char *image, const char *dir, fsnode *root, fsinfo_t *fsopts)
253 struct fs *superblock;
254 struct timeval start;
256 assert(image != NULL);
258 assert(root != NULL);
259 assert(fsopts != NULL);
261 if (debug & DEBUG_FS_MAKEFS)
262 printf("ffs_makefs: image %s directory %s root %p\n",
265 /* validate tree and options */
267 ffs_validate(dir, root, fsopts);
268 TIMER_RESULTS(start, "ffs_validate");
270 printf("Calculated size of `%s': %lld bytes, %lld inodes\n",
271 image, (long long)fsopts->size, (long long)fsopts->inodes);
275 if (ffs_create_image(image, fsopts) == -1)
276 errx(1, "Image file `%s' not created.", image);
277 TIMER_RESULTS(start, "ffs_create_image");
279 fsopts->curinode = UFS_ROOTINO;
281 if (debug & DEBUG_FS_MAKEFS)
285 printf("Populating `%s'\n", image);
287 if (! ffs_populate_dir(dir, root, fsopts))
288 errx(1, "Image file `%s' not populated.", image);
289 TIMER_RESULTS(start, "ffs_populate_dir");
291 /* ensure no outstanding buffers remain */
292 if (debug & DEBUG_FS_MAKEFS)
295 /* update various superblock parameters */
296 superblock = fsopts->superblock;
297 superblock->fs_fmod = 0;
298 superblock->fs_old_cstotal.cs_ndir = superblock->fs_cstotal.cs_ndir;
299 superblock->fs_old_cstotal.cs_nbfree = superblock->fs_cstotal.cs_nbfree;
300 superblock->fs_old_cstotal.cs_nifree = superblock->fs_cstotal.cs_nifree;
301 superblock->fs_old_cstotal.cs_nffree = superblock->fs_cstotal.cs_nffree;
303 /* write out superblock; image is now complete */
304 ffs_write_superblock(fsopts->superblock, fsopts);
305 if (close(fsopts->fd) == -1)
306 err(1, "Closing `%s'", image);
308 printf("Image `%s' complete\n", image);
311 /* end of public functions */
315 ffs_validate(const char *dir, fsnode *root, fsinfo_t *fsopts)
319 int32_t spc, nspf, ncyl, fssize;
321 ffs_opt_t *ffs_opts = fsopts->fs_specific;
324 assert(root != NULL);
325 assert(fsopts != NULL);
326 assert(ffs_opts != NULL);
328 if (debug & DEBUG_FS_VALIDATE) {
329 printf("ffs_validate: before defaults set:\n");
330 ffs_dump_fsinfo(fsopts);
333 /* set FFS defaults */
334 if (fsopts->sectorsize == -1)
335 fsopts->sectorsize = DFL_SECSIZE;
336 if (ffs_opts->fsize == -1)
337 ffs_opts->fsize = MAX(DFL_FRAGSIZE, fsopts->sectorsize);
338 if (ffs_opts->bsize == -1)
339 ffs_opts->bsize = MIN(DFL_BLKSIZE, 8 * ffs_opts->fsize);
340 if (ffs_opts->cpg == -1)
341 ffs_opts->cpg = DFL_CYLSPERGROUP;
343 ffs_opts->cpgflg = 1;
344 /* fsopts->density is set below */
345 if (ffs_opts->nsectors == -1)
346 ffs_opts->nsectors = DFL_NSECTORS;
347 if (ffs_opts->minfree == -1)
348 ffs_opts->minfree = MINFREE;
349 if (ffs_opts->optimization == -1)
350 ffs_opts->optimization = DEFAULTOPT;
351 if (ffs_opts->maxcontig == -1)
352 ffs_opts->maxcontig =
353 MAX(1, MIN(MAXPHYS, FFS_MAXBSIZE) / ffs_opts->bsize);
355 if (ffs_opts->maxbpg == -1)
356 ffs_opts->maxbpg = ffs_opts->bsize / sizeof(int32_t);
357 if (ffs_opts->avgfilesize == -1)
358 ffs_opts->avgfilesize = AVFILESIZ;
359 if (ffs_opts->avgfpdir == -1)
360 ffs_opts->avgfpdir = AFPDIR;
362 if (fsopts->maxsize > 0 &&
363 roundup(fsopts->minsize, ffs_opts->bsize) > fsopts->maxsize)
364 errx(1, "`%s' minsize of %lld rounded up to ffs bsize of %d "
365 "exceeds maxsize %lld. Lower bsize, or round the minimum "
366 "and maximum sizes to bsize.", dir,
367 (long long)fsopts->minsize, ffs_opts->bsize,
368 (long long)fsopts->maxsize);
370 /* calculate size of tree */
371 ffs_size_dir(root, fsopts);
372 fsopts->inodes += UFS_ROOTINO; /* include first two inodes */
374 if (debug & DEBUG_FS_VALIDATE)
375 printf("ffs_validate: size of tree: %lld bytes, %lld inodes\n",
376 (long long)fsopts->size, (long long)fsopts->inodes);
378 /* add requested slop */
379 fsopts->size += fsopts->freeblocks;
380 fsopts->inodes += fsopts->freefiles;
381 if (fsopts->freefilepc > 0)
383 fsopts->inodes * (100 + fsopts->freefilepc) / 100;
384 if (fsopts->freeblockpc > 0)
386 fsopts->size * (100 + fsopts->freeblockpc) / 100;
388 /* add space needed for superblocks */
390 * The old SBOFF (SBLOCK_UFS1) is used here because makefs is
391 * typically used for small filesystems where space matters.
392 * XXX make this an option.
394 fsopts->size += (SBLOCK_UFS1 + SBLOCKSIZE) * ncg;
395 /* add space needed to store inodes, x3 for blockmaps, etc */
396 if (ffs_opts->version == 1)
397 fsopts->size += ncg * DINODE1_SIZE *
398 roundup(fsopts->inodes / ncg,
399 ffs_opts->bsize / DINODE1_SIZE);
401 fsopts->size += ncg * DINODE2_SIZE *
402 roundup(fsopts->inodes / ncg,
403 ffs_opts->bsize / DINODE2_SIZE);
406 if (ffs_opts->minfree > 0)
408 fsopts->size * (100 + ffs_opts->minfree) / 100;
410 * XXX any other fs slop to add, such as csum's, bitmaps, etc ??
413 if (fsopts->size < fsopts->minsize) /* ensure meets minimum size */
414 fsopts->size = fsopts->minsize;
416 /* round up to the next block */
417 fsopts->size = roundup(fsopts->size, ffs_opts->bsize);
419 /* round up to requested block size, if any */
420 if (fsopts->roundup > 0)
421 fsopts->size = roundup(fsopts->size, fsopts->roundup);
423 /* calculate density if necessary */
424 if (ffs_opts->density == -1)
425 ffs_opts->density = fsopts->size / fsopts->inodes + 1;
427 if (debug & DEBUG_FS_VALIDATE) {
428 printf("ffs_validate: after defaults set:\n");
429 ffs_dump_fsinfo(fsopts);
430 printf("ffs_validate: dir %s; %lld bytes, %lld inodes\n",
431 dir, (long long)fsopts->size, (long long)fsopts->inodes);
433 /* now check calculated sizes vs requested sizes */
434 if (fsopts->maxsize > 0 && fsopts->size > fsopts->maxsize) {
435 errx(1, "`%s' size of %lld is larger than the maxsize of %lld.",
436 dir, (long long)fsopts->size, (long long)fsopts->maxsize);
442 ffs_dump_fsinfo(fsinfo_t *f)
445 ffs_opt_t *fs = f->fs_specific;
447 printf("fsopts at %p\n", f);
449 printf("\tsize %lld, inodes %lld, curinode %u\n",
450 (long long)f->size, (long long)f->inodes, f->curinode);
452 printf("\tminsize %lld, maxsize %lld\n",
453 (long long)f->minsize, (long long)f->maxsize);
454 printf("\tfree files %lld, freefile %% %d\n",
455 (long long)f->freefiles, f->freefilepc);
456 printf("\tfree blocks %lld, freeblock %% %d\n",
457 (long long)f->freeblocks, f->freeblockpc);
458 printf("\tneedswap %d, sectorsize %d\n", f->needswap, f->sectorsize);
460 printf("\tbsize %d, fsize %d, cpg %d, density %d\n",
461 fs->bsize, fs->fsize, fs->cpg, fs->density);
462 printf("\tnsectors %d, rpm %d, minfree %d\n",
463 fs->nsectors, fs->rpm, fs->minfree);
464 printf("\tmaxcontig %d, maxbpg %d\n",
465 fs->maxcontig, fs->maxbpg);
466 printf("\toptimization %s\n",
467 fs->optimization == FS_OPTSPACE ? "space" : "time");
472 ffs_create_image(const char *image, fsinfo_t *fsopts)
474 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
481 int oflags = O_RDWR | O_CREAT;
484 assert (image != NULL);
485 assert (fsopts != NULL);
488 if (fsopts->offset == 0)
490 if ((fsopts->fd = open(image, oflags, 0666)) == -1) {
491 warn("Can't open `%s' for writing", image);
496 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
497 if (fstatvfs(fsopts->fd, &sfs) == -1) {
500 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
501 warn("can't fstatvfs `%s', using default %d byte chunk",
504 bufsize = sfs.f_iosize;
506 bufrem = fsopts->size;
507 if (fsopts->sparse) {
508 if (ftruncate(fsopts->fd, bufrem) == -1) {
509 warn("sparse option disabled.");
513 if (fsopts->sparse) {
514 /* File truncated at bufrem. Remaining is 0 */
518 if (debug & DEBUG_FS_CREATE_IMAGE)
519 printf("zero-ing image `%s', %lld sectors, "
520 "using %d byte chunks\n", image, (long long)bufrem,
522 buf = ecalloc(1, bufsize);
525 if (fsopts->offset != 0)
526 if (lseek(fsopts->fd, fsopts->offset, SEEK_SET) == -1) {
533 i = write(fsopts->fd, buf, MIN(bufsize, bufrem));
535 warn("zeroing image, %lld bytes to go",
545 /* make the file system */
546 if (debug & DEBUG_FS_CREATE_IMAGE)
547 printf("calling mkfs(\"%s\", ...)\n", image);
549 if (stampst.st_ino != 0)
550 tstamp = stampst.st_ctime;
552 tstamp = start_time.tv_sec;
556 fs = ffs_mkfs(image, fsopts, tstamp);
557 fsopts->superblock = (void *)fs;
558 if (debug & DEBUG_FS_CREATE_IMAGE) {
561 t = (time_t)((struct fs *)fsopts->superblock)->fs_time;
562 printf("mkfs returned %p; fs_time %s",
563 fsopts->superblock, ctime(&t));
564 printf("fs totals: nbfree %lld, nffree %lld, nifree %lld, ndir %lld\n",
565 (long long)fs->fs_cstotal.cs_nbfree,
566 (long long)fs->fs_cstotal.cs_nffree,
567 (long long)fs->fs_cstotal.cs_nifree,
568 (long long)fs->fs_cstotal.cs_ndir);
571 if (fs->fs_cstotal.cs_nifree + UFS_ROOTINO < fsopts->inodes) {
573 "Image file `%s' has %lld free inodes; %lld are required.",
575 (long long)(fs->fs_cstotal.cs_nifree + UFS_ROOTINO),
576 (long long)fsopts->inodes);
584 ffs_size_dir(fsnode *root, fsinfo_t *fsopts)
586 struct direct tmpdir;
588 int curdirsize, this;
589 ffs_opt_t *ffs_opts = fsopts->fs_specific;
591 /* node may be NULL (empty directory) */
592 assert(fsopts != NULL);
593 assert(ffs_opts != NULL);
595 if (debug & DEBUG_FS_SIZE_DIR)
596 printf("ffs_size_dir: entry: bytes %lld inodes %lld\n",
597 (long long)fsopts->size, (long long)fsopts->inodes);
599 #define ADDDIRENT(e) do { \
600 tmpdir.d_namlen = strlen((e)); \
601 this = DIRSIZ_SWAP(0, &tmpdir, 0); \
602 if (debug & DEBUG_FS_SIZE_DIR_ADD_DIRENT) \
603 printf("ADDDIRENT: was: %s (%d) this %d cur %d\n", \
604 e, tmpdir.d_namlen, this, curdirsize); \
605 if (this + curdirsize > roundup(curdirsize, DIRBLKSIZ)) \
606 curdirsize = roundup(curdirsize, DIRBLKSIZ); \
607 curdirsize += this; \
608 if (debug & DEBUG_FS_SIZE_DIR_ADD_DIRENT) \
609 printf("ADDDIRENT: now: %s (%d) this %d cur %d\n", \
610 e, tmpdir.d_namlen, this, curdirsize); \
614 * XXX this needs to take into account extra space consumed
615 * by indirect blocks, etc.
617 #define ADDSIZE(x) do { \
618 fsopts->size += roundup((x), ffs_opts->fsize); \
622 for (node = root; node != NULL; node = node->next) {
623 ADDDIRENT(node->name);
624 if (node == root) { /* we're at "." */
625 assert(strcmp(node->name, ".") == 0);
627 } else if ((node->inode->flags & FI_SIZED) == 0) {
628 /* don't count duplicate names */
629 node->inode->flags |= FI_SIZED;
630 if (debug & DEBUG_FS_SIZE_DIR_NODE)
631 printf("ffs_size_dir: `%s' size %lld\n",
633 (long long)node->inode->st.st_size);
635 if (node->type == S_IFREG)
636 ADDSIZE(node->inode->st.st_size);
637 if (node->type == S_IFLNK) {
640 slen = strlen(node->symlink) + 1;
641 if (slen >= (ffs_opts->version == 1 ?
647 if (node->type == S_IFDIR)
648 ffs_size_dir(node->child, fsopts);
652 if (debug & DEBUG_FS_SIZE_DIR)
653 printf("ffs_size_dir: exit: size %lld inodes %lld\n",
654 (long long)fsopts->size, (long long)fsopts->inodes);
658 ffs_build_dinode1(struct ufs1_dinode *dinp, dirbuf_t *dbufp, fsnode *cur,
659 fsnode *root, fsinfo_t *fsopts)
663 struct stat *st = stampst.st_ino != 0 ? &stampst : &cur->inode->st;
665 memset(dinp, 0, sizeof(*dinp));
666 dinp->di_mode = cur->inode->st.st_mode;
667 dinp->di_nlink = cur->inode->nlink;
668 dinp->di_size = cur->inode->st.st_size;
669 #if HAVE_STRUCT_STAT_ST_FLAGS
670 dinp->di_flags = cur->inode->st.st_flags;
672 dinp->di_gen = random();
673 dinp->di_uid = cur->inode->st.st_uid;
674 dinp->di_gid = cur->inode->st.st_gid;
676 dinp->di_atime = st->st_atime;
677 dinp->di_mtime = st->st_mtime;
678 dinp->di_ctime = st->st_ctime;
679 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
680 dinp->di_atimensec = st->st_atimensec;
681 dinp->di_mtimensec = st->st_mtimensec;
682 dinp->di_ctimensec = st->st_ctimensec;
684 /* not set: di_db, di_ib, di_blocks, di_spare */
687 if (cur == root) { /* "."; write dirbuf */
689 dinp->di_size = dbufp->size;
690 } else if (S_ISBLK(cur->type) || S_ISCHR(cur->type)) {
691 dinp->di_size = 0; /* a device */
693 ufs_rw32(cur->inode->st.st_rdev, fsopts->needswap);
694 } else if (S_ISLNK(cur->type)) { /* symlink */
695 slen = strlen(cur->symlink);
696 if (slen < UFS1_MAXSYMLINKLEN) { /* short link */
697 memcpy(dinp->di_db, cur->symlink, slen);
699 membuf = cur->symlink;
700 dinp->di_size = slen;
706 ffs_build_dinode2(struct ufs2_dinode *dinp, dirbuf_t *dbufp, fsnode *cur,
707 fsnode *root, fsinfo_t *fsopts)
711 struct stat *st = stampst.st_ino != 0 ? &stampst : &cur->inode->st;
713 memset(dinp, 0, sizeof(*dinp));
714 dinp->di_mode = cur->inode->st.st_mode;
715 dinp->di_nlink = cur->inode->nlink;
716 dinp->di_size = cur->inode->st.st_size;
717 #if HAVE_STRUCT_STAT_ST_FLAGS
718 dinp->di_flags = cur->inode->st.st_flags;
720 dinp->di_gen = random();
721 dinp->di_uid = cur->inode->st.st_uid;
722 dinp->di_gid = cur->inode->st.st_gid;
724 dinp->di_atime = st->st_atime;
725 dinp->di_mtime = st->st_mtime;
726 dinp->di_ctime = st->st_ctime;
727 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
728 dinp->di_atimensec = st->st_atimensec;
729 dinp->di_mtimensec = st->st_mtimensec;
730 dinp->di_ctimensec = st->st_ctimensec;
732 #if HAVE_STRUCT_STAT_BIRTHTIME
733 dinp->di_birthtime = st->st_birthtime;
734 dinp->di_birthnsec = st->st_birthtimensec;
736 /* not set: di_db, di_ib, di_blocks, di_spare */
739 if (cur == root) { /* "."; write dirbuf */
741 dinp->di_size = dbufp->size;
742 } else if (S_ISBLK(cur->type) || S_ISCHR(cur->type)) {
743 dinp->di_size = 0; /* a device */
745 ufs_rw64(cur->inode->st.st_rdev, fsopts->needswap);
746 } else if (S_ISLNK(cur->type)) { /* symlink */
747 slen = strlen(cur->symlink);
748 if (slen < UFS2_MAXSYMLINKLEN) { /* short link */
749 memcpy(dinp->di_db, cur->symlink, slen);
751 membuf = cur->symlink;
752 dinp->di_size = slen;
758 ffs_populate_dir(const char *dir, fsnode *root, fsinfo_t *fsopts)
764 char path[MAXPATHLEN + 1];
765 ffs_opt_t *ffs_opts = fsopts->fs_specific;
768 assert(root != NULL);
769 assert(fsopts != NULL);
770 assert(ffs_opts != NULL);
772 (void)memset(&dirbuf, 0, sizeof(dirbuf));
774 if (debug & DEBUG_FS_POPULATE)
775 printf("ffs_populate_dir: PASS 1 dir %s node %p\n", dir, root);
778 * pass 1: allocate inode numbers, build directory `file'
780 for (cur = root; cur != NULL; cur = cur->next) {
781 if ((cur->inode->flags & FI_ALLOCATED) == 0) {
782 cur->inode->flags |= FI_ALLOCATED;
783 if (cur == root && cur->parent != NULL)
784 cur->inode->ino = cur->parent->inode->ino;
786 cur->inode->ino = fsopts->curinode;
790 ffs_make_dirbuf(&dirbuf, cur->name, cur, fsopts->needswap);
791 if (cur == root) { /* we're at "."; add ".." */
792 ffs_make_dirbuf(&dirbuf, "..",
793 cur->parent == NULL ? cur : cur->parent->first,
795 root->inode->nlink++; /* count my parent's link */
796 } else if (cur->child != NULL)
797 root->inode->nlink++; /* count my child's link */
800 * XXX possibly write file and long symlinks here,
801 * ensuring that blocks get written before inodes?
802 * otoh, this isn't a real filesystem, so who
803 * cares about ordering? :-)
806 if (debug & DEBUG_FS_POPULATE_DIRBUF)
807 ffs_dump_dirbuf(&dirbuf, dir, fsopts->needswap);
810 * pass 2: write out dirbuf, then non-directories at this level
812 if (debug & DEBUG_FS_POPULATE)
813 printf("ffs_populate_dir: PASS 2 dir %s\n", dir);
814 for (cur = root; cur != NULL; cur = cur->next) {
815 if (cur->inode->flags & FI_WRITTEN)
816 continue; /* skip hard-linked entries */
817 cur->inode->flags |= FI_WRITTEN;
819 if (cur->contents == NULL) {
820 if (snprintf(path, sizeof(path), "%s/%s/%s", cur->root,
821 cur->path, cur->name) >= (int)sizeof(path))
822 errx(1, "Pathname too long.");
825 if (cur->child != NULL)
826 continue; /* child creates own inode */
828 /* build on-disk inode */
829 if (ffs_opts->version == 1)
830 membuf = ffs_build_dinode1(&din.ffs1_din, &dirbuf, cur,
833 membuf = ffs_build_dinode2(&din.ffs2_din, &dirbuf, cur,
836 if (debug & DEBUG_FS_POPULATE_NODE) {
837 printf("ffs_populate_dir: writing ino %d, %s",
838 cur->inode->ino, inode_type(cur->type));
839 if (cur->inode->nlink > 1)
840 printf(", nlink %d", cur->inode->nlink);
844 if (membuf != NULL) {
845 ffs_write_file(&din, cur->inode->ino, membuf, fsopts);
846 } else if (S_ISREG(cur->type)) {
847 ffs_write_file(&din, cur->inode->ino,
848 (cur->contents) ? cur->contents : path, fsopts);
850 assert (! S_ISDIR(cur->type));
851 ffs_write_inode(&din, cur->inode->ino, fsopts);
856 * pass 3: write out sub-directories
858 if (debug & DEBUG_FS_POPULATE)
859 printf("ffs_populate_dir: PASS 3 dir %s\n", dir);
860 for (cur = root; cur != NULL; cur = cur->next) {
861 if (cur->child == NULL)
863 if ((size_t)snprintf(path, sizeof(path), "%s/%s", dir,
864 cur->name) >= sizeof(path))
865 errx(1, "Pathname too long.");
866 if (! ffs_populate_dir(path, cur->child, fsopts))
870 if (debug & DEBUG_FS_POPULATE)
871 printf("ffs_populate_dir: DONE dir %s\n", dir);
874 if (dirbuf.buf != NULL)
881 ffs_write_file(union dinode *din, uint32_t ino, void *buf, fsinfo_t *fsopts)
885 off_t bufleft, chunk, offset;
889 ffs_opt_t *ffs_opts = fsopts->fs_specific;
890 struct vnode vp = { fsopts, NULL };
892 assert (din != NULL);
893 assert (buf != NULL);
894 assert (fsopts != NULL);
895 assert (ffs_opts != NULL);
897 isfile = S_ISREG(DIP(din, mode));
902 in.i_fs = (struct fs *)fsopts->superblock;
905 if (debug & DEBUG_FS_WRITE_FILE) {
907 "ffs_write_file: ino %u, din %p, isfile %d, %s, size %lld",
908 ino, din, isfile, inode_type(DIP(din, mode) & S_IFMT),
909 (long long)DIP(din, size));
911 printf(", file '%s'\n", (char *)buf);
913 printf(", buffer %p\n", buf);
917 in.i_size = DIP(din, size);
918 if (ffs_opts->version == 1)
919 memcpy(&in.i_din.ffs1_din, &din->ffs1_din,
920 sizeof(in.i_din.ffs1_din));
922 memcpy(&in.i_din.ffs2_din, &din->ffs2_din,
923 sizeof(in.i_din.ffs2_din));
925 if (DIP(din, size) == 0)
926 goto write_inode_and_leave; /* mmm, cheating */
929 fbuf = emalloc(ffs_opts->bsize);
930 if ((ffd = open((char *)buf, O_RDONLY, 0444)) == -1) {
931 warn("Can't open `%s' for reading", (char *)buf);
932 goto leave_ffs_write_file;
939 for (bufleft = DIP(din, size); bufleft > 0; bufleft -= chunk) {
940 chunk = MIN(bufleft, ffs_opts->bsize);
943 else if ((nread = read(ffd, fbuf, chunk)) == -1)
944 err(EXIT_FAILURE, "Reading `%s', %lld bytes to go",
945 (char *)buf, (long long)bufleft);
946 else if (nread != chunk)
947 errx(EXIT_FAILURE, "Reading `%s', %lld bytes to go, "
948 "read %zd bytes, expected %ju bytes, does "
949 "metalog size= attribute mismatch source size?",
950 (char *)buf, (long long)bufleft, nread,
954 offset = DIP(din, size) - bufleft;
955 if (debug & DEBUG_FS_WRITE_FILE_BLOCK)
957 "ffs_write_file: write %p offset %lld size %lld left %lld\n",
958 p, (long long)offset,
959 (long long)chunk, (long long)bufleft);
961 * XXX if holey support is desired, do the check here
963 * XXX might need to write out last bit in fragroundup
964 * sized chunk. however, ffs_balloc() handles this for us
966 errno = ffs_balloc(&in, offset, chunk, &bp);
970 "Writing inode %d (%s), bytes %lld + %lld",
972 isfile ? (char *)buf :
973 inode_type(DIP(din, mode) & S_IFMT),
974 (long long)offset, (long long)chunk);
975 memcpy(bp->b_data, p, chunk);
978 goto bad_ffs_write_file;
984 write_inode_and_leave:
985 ffs_write_inode(&in.i_din, in.i_number, fsopts);
987 leave_ffs_write_file:
996 ffs_dump_dirbuf(dirbuf_t *dbuf, const char *dir, int needswap)
1002 assert (dbuf != NULL);
1003 assert (dir != NULL);
1004 printf("ffs_dump_dirbuf: dir %s size %d cur %d\n",
1005 dir, dbuf->size, dbuf->cur);
1007 for (i = 0; i < dbuf->size; ) {
1008 de = (struct direct *)(dbuf->buf + i);
1009 reclen = ufs_rw16(de->d_reclen, needswap);
1011 " inode %4d %7s offset %4d reclen %3d namlen %3d name %s\n",
1012 ufs_rw32(de->d_ino, needswap),
1013 inode_type(DTTOIF(de->d_type)), i, reclen,
1014 de->d_namlen, de->d_name);
1021 ffs_make_dirbuf(dirbuf_t *dbuf, const char *name, fsnode *node, int needswap)
1023 struct direct de, *dp;
1024 uint16_t llen, reclen;
1027 assert (dbuf != NULL);
1028 assert (name != NULL);
1029 assert (node != NULL);
1030 /* create direct entry */
1031 (void)memset(&de, 0, sizeof(de));
1032 de.d_ino = ufs_rw32(node->inode->ino, needswap);
1033 de.d_type = IFTODT(node->type);
1034 de.d_namlen = (uint8_t)strlen(name);
1035 strcpy(de.d_name, name);
1036 reclen = DIRSIZ_SWAP(0, &de, needswap);
1037 de.d_reclen = ufs_rw16(reclen, needswap);
1039 dp = (struct direct *)(dbuf->buf + dbuf->cur);
1042 llen = DIRSIZ_SWAP(0, dp, needswap);
1044 if (debug & DEBUG_FS_MAKE_DIRBUF)
1046 "ffs_make_dirbuf: dbuf siz %d cur %d lastlen %d\n"
1047 " ino %d type %d reclen %d namlen %d name %.30s\n",
1048 dbuf->size, dbuf->cur, llen,
1049 ufs_rw32(de.d_ino, needswap), de.d_type, reclen,
1050 de.d_namlen, de.d_name);
1052 if (reclen + dbuf->cur + llen > roundup(dbuf->size, DIRBLKSIZ)) {
1053 if (debug & DEBUG_FS_MAKE_DIRBUF)
1054 printf("ffs_make_dirbuf: growing buf to %d\n",
1055 dbuf->size + DIRBLKSIZ);
1056 newbuf = erealloc(dbuf->buf, dbuf->size + DIRBLKSIZ);
1058 dbuf->size += DIRBLKSIZ;
1059 memset(dbuf->buf + dbuf->size - DIRBLKSIZ, 0, DIRBLKSIZ);
1060 dbuf->cur = dbuf->size - DIRBLKSIZ;
1061 } else if (dp) { /* shrink end of previous */
1062 dp->d_reclen = ufs_rw16(llen,needswap);
1065 dp = (struct direct *)(dbuf->buf + dbuf->cur);
1066 memcpy(dp, &de, reclen);
1067 dp->d_reclen = ufs_rw16(dbuf->size - dbuf->cur, needswap);
1071 * cribbed from sys/ufs/ffs/ffs_alloc.c
1074 ffs_write_inode(union dinode *dp, uint32_t ino, const fsinfo_t *fsopts)
1077 struct ufs1_dinode *dp1;
1078 struct ufs2_dinode *dp2, *dip;
1084 char sbbuf[FFS_MAXBSIZE];
1085 uint32_t initediblk;
1086 ffs_opt_t *ffs_opts = fsopts->fs_specific;
1088 assert (dp != NULL);
1090 assert (fsopts != NULL);
1091 assert (ffs_opts != NULL);
1093 fs = (struct fs *)fsopts->superblock;
1094 cg = ino_to_cg(fs, ino);
1095 cgino = ino % fs->fs_ipg;
1096 if (debug & DEBUG_FS_WRITE_INODE)
1097 printf("ffs_write_inode: din %p ino %u cg %d cgino %d\n",
1098 dp, ino, cg, cgino);
1100 ffs_rdfs(fsbtodb(fs, cgtod(fs, cg)), (int)fs->fs_cgsize, &sbbuf,
1102 cgp = (struct cg *)sbbuf;
1103 if (!cg_chkmagic_swap(cgp, fsopts->needswap))
1104 errx(1, "ffs_write_inode: cg %d: bad magic number", cg);
1106 assert (isclr(cg_inosused_swap(cgp, fsopts->needswap), cgino));
1108 buf = emalloc(fs->fs_bsize);
1109 dp1 = (struct ufs1_dinode *)buf;
1110 dp2 = (struct ufs2_dinode *)buf;
1112 if (fs->fs_cstotal.cs_nifree == 0)
1113 errx(1, "ffs_write_inode: fs out of inodes for ino %u",
1115 if (fs->fs_cs(fs, cg).cs_nifree == 0)
1117 "ffs_write_inode: cg %d out of inodes for ino %u",
1119 setbit(cg_inosused_swap(cgp, fsopts->needswap), cgino);
1120 ufs_add32(cgp->cg_cs.cs_nifree, -1, fsopts->needswap);
1121 fs->fs_cstotal.cs_nifree--;
1122 fs->fs_cs(fs, cg).cs_nifree--;
1123 if (S_ISDIR(DIP(dp, mode))) {
1124 ufs_add32(cgp->cg_cs.cs_ndir, 1, fsopts->needswap);
1125 fs->fs_cstotal.cs_ndir++;
1126 fs->fs_cs(fs, cg).cs_ndir++;
1130 * Initialize inode blocks on the fly for UFS2.
1132 initediblk = ufs_rw32(cgp->cg_initediblk, fsopts->needswap);
1133 if (ffs_opts->version == 2 && cgino + INOPB(fs) > initediblk &&
1134 initediblk < ufs_rw32(cgp->cg_niblk, fsopts->needswap)) {
1135 memset(buf, 0, fs->fs_bsize);
1136 dip = (struct ufs2_dinode *)buf;
1137 for (i = 0; i < INOPB(fs); i++) {
1138 dip->di_gen = random();
1141 ffs_wtfs(fsbtodb(fs, ino_to_fsba(fs,
1142 cg * fs->fs_ipg + initediblk)),
1143 fs->fs_bsize, buf, fsopts);
1144 initediblk += INOPB(fs);
1145 cgp->cg_initediblk = ufs_rw32(initediblk, fsopts->needswap);
1149 ffs_wtfs(fsbtodb(fs, cgtod(fs, cg)), (int)fs->fs_cgsize, &sbbuf,
1152 /* now write inode */
1153 d = fsbtodb(fs, ino_to_fsba(fs, ino));
1154 ffs_rdfs(d, fs->fs_bsize, buf, fsopts);
1155 if (fsopts->needswap) {
1156 if (ffs_opts->version == 1)
1157 ffs_dinode1_swap(&dp->ffs1_din,
1158 &dp1[ino_to_fsbo(fs, ino)]);
1160 ffs_dinode2_swap(&dp->ffs2_din,
1161 &dp2[ino_to_fsbo(fs, ino)]);
1163 if (ffs_opts->version == 1)
1164 dp1[ino_to_fsbo(fs, ino)] = dp->ffs1_din;
1166 dp2[ino_to_fsbo(fs, ino)] = dp->ffs2_din;
1168 ffs_wtfs(d, fs->fs_bsize, buf, fsopts);
1173 panic(const char *fmt, ...)