1 /* $NetBSD: ffs.c,v 1.44 2009/04/28 22:49:26 joerg 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
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in the
48 * documentation and/or other materials provided with the distribution.
49 * 3. Neither the name of the University nor the names of its contributors
50 * may be used to endorse or promote products derived from this software
51 * without specific prior written permission.
53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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>
89 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
90 #include <sys/statvfs.h>
93 #include <ufs/ufs/dinode.h>
94 #include <ufs/ufs/dir.h>
95 #include <ufs/ffs/fs.h>
98 #include "ffs/ufs_bswap.h"
99 #include "ffs/ufs_inode.h"
100 #include "ffs/newfs_extern.h"
101 #include "ffs/ffs_extern.h"
104 #define DIP(dp, field) \
105 ((ffs_opts->version == 1) ? \
106 (dp)->ffs1_din.di_##field : (dp)->ffs2_din.di_##field)
109 * Various file system defaults (cribbed from newfs(8)).
111 #define DFL_FRAGSIZE 1024 /* fragment size */
112 #define DFL_BLKSIZE 8192 /* block size */
113 #define DFL_SECSIZE 512 /* sector size */
114 #define DFL_CYLSPERGROUP 65536 /* cylinders per group */
115 #define DFL_FRAGSPERINODE 4 /* fragments per inode */
116 #define DFL_ROTDELAY 0 /* rotational delay */
117 #define DFL_NRPOS 1 /* rotational positions */
118 #define DFL_RPM 3600 /* rpm of disk */
119 #define DFL_NSECTORS 64 /* # of sectors */
120 #define DFL_NTRACKS 16 /* # of tracks */
124 u_char *buf; /* buf for directory */
125 doff_t size; /* full size of buf */
126 doff_t cur; /* offset of current entry */
130 static int ffs_create_image(const char *, fsinfo_t *);
131 static void ffs_dump_fsinfo(fsinfo_t *);
132 static void ffs_dump_dirbuf(dirbuf_t *, const char *, int);
133 static void ffs_make_dirbuf(dirbuf_t *, const char *, fsnode *, int);
134 static int ffs_populate_dir(const char *, fsnode *, fsinfo_t *);
135 static void ffs_size_dir(fsnode *, fsinfo_t *);
136 static void ffs_validate(const char *, fsnode *, fsinfo_t *);
137 static void ffs_write_file(union dinode *, uint32_t, void *, fsinfo_t *);
138 static void ffs_write_inode(union dinode *, uint32_t, const fsinfo_t *);
139 static void *ffs_build_dinode1(struct ufs1_dinode *, dirbuf_t *, fsnode *,
140 fsnode *, fsinfo_t *);
141 static void *ffs_build_dinode2(struct ufs2_dinode *, dirbuf_t *, fsnode *,
142 fsnode *, fsinfo_t *);
146 int sectorsize; /* XXX: for buf.c::getblk() */
148 /* publically visible functions */
151 ffs_prep_opts(fsinfo_t *fsopts)
155 if ((ffs_opts = calloc(1, sizeof(ffs_opt_t))) == NULL)
156 err(1, "Allocating memory for ffs_options");
158 fsopts->fs_specific = ffs_opts;
163 ffs_opts->density= -1;
164 ffs_opts->minfree= -1;
165 ffs_opts->optimization= -1;
166 ffs_opts->maxcontig= -1;
167 ffs_opts->maxbpg= -1;
168 ffs_opts->avgfilesize= -1;
169 ffs_opts->avgfpdir= -1;
170 ffs_opts->version = 1;
174 ffs_cleanup_opts(fsinfo_t *fsopts)
176 if (fsopts->fs_specific)
177 free(fsopts->fs_specific);
181 ffs_parse_opts(const char *option, fsinfo_t *fsopts)
183 ffs_opt_t *ffs_opts = fsopts->fs_specific;
185 option_t ffs_options[] = {
186 { "bsize", &ffs_opts->bsize, 1, INT_MAX,
188 { "fsize", &ffs_opts->fsize, 1, INT_MAX,
190 { "density", &ffs_opts->density, 1, INT_MAX,
192 { "minfree", &ffs_opts->minfree, 0, 99,
194 { "maxbpf", &ffs_opts->maxbpg, 1, INT_MAX,
195 "max blocks per file in a cg" },
196 { "avgfilesize", &ffs_opts->avgfilesize,1, INT_MAX,
197 "expected average file size" },
198 { "avgfpdir", &ffs_opts->avgfpdir, 1, INT_MAX,
199 "expected # of files per directory" },
200 { "extent", &ffs_opts->maxbsize, 1, INT_MAX,
201 "maximum # extent size" },
202 { "maxbpcg", &ffs_opts->maxblkspercg,1, INT_MAX,
203 "max # of blocks per group" },
204 { "version", &ffs_opts->version, 1, 2,
212 assert(option != NULL);
213 assert(fsopts != NULL);
214 assert(ffs_opts != NULL);
216 if (debug & DEBUG_FS_PARSE_OPTS)
217 printf("ffs_parse_opts: got `%s'\n", option);
219 if ((var = strdup(option)) == NULL)
220 err(1, "Allocating memory for copy of option string");
223 if ((val = strchr(var, '=')) == NULL) {
224 warnx("Option `%s' doesn't contain a value", var);
225 goto leave_ffs_parse_opts;
229 if (strcmp(var, "optimization") == 0) {
230 if (strcmp(val, "time") == 0) {
231 ffs_opts->optimization = FS_OPTTIME;
232 } else if (strcmp(val, "space") == 0) {
233 ffs_opts->optimization = FS_OPTSPACE;
235 warnx("Invalid optimization `%s'", val);
236 goto leave_ffs_parse_opts;
239 } else if (strcmp(var, "label") == 0) {
240 strlcpy(ffs_opts->label, val, sizeof(ffs_opts->label));
243 rv = set_option(ffs_options, var, val);
245 leave_ffs_parse_opts:
253 ffs_makefs(const char *image, const char *dir, fsnode *root, fsinfo_t *fsopts)
255 struct fs *superblock;
256 struct timeval start;
258 assert(image != NULL);
260 assert(root != NULL);
261 assert(fsopts != NULL);
263 if (debug & DEBUG_FS_MAKEFS)
264 printf("ffs_makefs: image %s directory %s root %p\n",
267 /* validate tree and options */
269 ffs_validate(dir, root, fsopts);
270 TIMER_RESULTS(start, "ffs_validate");
272 printf("Calculated size of `%s': %lld bytes, %lld inodes\n",
273 image, (long long)fsopts->size, (long long)fsopts->inodes);
277 if (ffs_create_image(image, fsopts) == -1)
278 errx(1, "Image file `%s' not created.", image);
279 TIMER_RESULTS(start, "ffs_create_image");
281 fsopts->curinode = ROOTINO;
283 if (debug & DEBUG_FS_MAKEFS)
287 printf("Populating `%s'\n", image);
289 if (! ffs_populate_dir(dir, root, fsopts))
290 errx(1, "Image file `%s' not populated.", image);
291 TIMER_RESULTS(start, "ffs_populate_dir");
293 /* ensure no outstanding buffers remain */
294 if (debug & DEBUG_FS_MAKEFS)
297 /* update various superblock parameters */
298 superblock = fsopts->superblock;
299 superblock->fs_fmod = 0;
300 superblock->fs_old_cstotal.cs_ndir = superblock->fs_cstotal.cs_ndir;
301 superblock->fs_old_cstotal.cs_nbfree = superblock->fs_cstotal.cs_nbfree;
302 superblock->fs_old_cstotal.cs_nifree = superblock->fs_cstotal.cs_nifree;
303 superblock->fs_old_cstotal.cs_nffree = superblock->fs_cstotal.cs_nffree;
305 /* write out superblock; image is now complete */
306 ffs_write_superblock(fsopts->superblock, fsopts);
307 if (close(fsopts->fd) == -1)
308 err(1, "Closing `%s'", image);
310 printf("Image `%s' complete\n", image);
313 /* end of public functions */
317 ffs_validate(const char *dir, fsnode *root, fsinfo_t *fsopts)
321 int32_t spc, nspf, ncyl, fssize;
323 ffs_opt_t *ffs_opts = fsopts->fs_specific;
326 assert(root != NULL);
327 assert(fsopts != NULL);
328 assert(ffs_opts != NULL);
330 if (debug & DEBUG_FS_VALIDATE) {
331 printf("ffs_validate: before defaults set:\n");
332 ffs_dump_fsinfo(fsopts);
335 /* set FFS defaults */
336 if (fsopts->sectorsize == -1)
337 fsopts->sectorsize = DFL_SECSIZE;
338 if (ffs_opts->fsize == -1)
339 ffs_opts->fsize = MAX(DFL_FRAGSIZE, fsopts->sectorsize);
340 if (ffs_opts->bsize == -1)
341 ffs_opts->bsize = MIN(DFL_BLKSIZE, 8 * ffs_opts->fsize);
342 if (ffs_opts->cpg == -1)
343 ffs_opts->cpg = DFL_CYLSPERGROUP;
345 ffs_opts->cpgflg = 1;
346 /* fsopts->density is set below */
347 if (ffs_opts->nsectors == -1)
348 ffs_opts->nsectors = DFL_NSECTORS;
349 if (ffs_opts->minfree == -1)
350 ffs_opts->minfree = MINFREE;
351 if (ffs_opts->optimization == -1)
352 ffs_opts->optimization = DEFAULTOPT;
353 if (ffs_opts->maxcontig == -1)
354 ffs_opts->maxcontig =
355 MAX(1, MIN(MAXPHYS, FFS_MAXBSIZE) / ffs_opts->bsize);
357 if (ffs_opts->maxbpg == -1)
358 ffs_opts->maxbpg = ffs_opts->bsize / sizeof(int32_t);
359 if (ffs_opts->avgfilesize == -1)
360 ffs_opts->avgfilesize = AVFILESIZ;
361 if (ffs_opts->avgfpdir == -1)
362 ffs_opts->avgfpdir = AFPDIR;
364 /* calculate size of tree */
365 ffs_size_dir(root, fsopts);
366 fsopts->inodes += ROOTINO; /* include first two inodes */
368 if (debug & DEBUG_FS_VALIDATE)
369 printf("ffs_validate: size of tree: %lld bytes, %lld inodes\n",
370 (long long)fsopts->size, (long long)fsopts->inodes);
372 /* add requested slop */
373 fsopts->size += fsopts->freeblocks;
374 fsopts->inodes += fsopts->freefiles;
375 if (fsopts->freefilepc > 0)
377 fsopts->inodes * (100 + fsopts->freefilepc) / 100;
378 if (fsopts->freeblockpc > 0)
380 fsopts->size * (100 + fsopts->freeblockpc) / 100;
382 /* add space needed for superblocks */
384 * The old SBOFF (SBLOCK_UFS1) is used here because makefs is
385 * typically used for small filesystems where space matters.
386 * XXX make this an option.
388 fsopts->size += (SBLOCK_UFS1 + SBLOCKSIZE) * ncg;
389 /* add space needed to store inodes, x3 for blockmaps, etc */
390 if (ffs_opts->version == 1)
391 fsopts->size += ncg * DINODE1_SIZE *
392 roundup(fsopts->inodes / ncg,
393 ffs_opts->bsize / DINODE1_SIZE);
395 fsopts->size += ncg * DINODE2_SIZE *
396 roundup(fsopts->inodes / ncg,
397 ffs_opts->bsize / DINODE2_SIZE);
400 if (ffs_opts->minfree > 0)
402 fsopts->size * (100 + ffs_opts->minfree) / 100;
404 * XXX any other fs slop to add, such as csum's, bitmaps, etc ??
407 if (fsopts->size < fsopts->minsize) /* ensure meets minimum size */
408 fsopts->size = fsopts->minsize;
410 /* round up to the next block */
411 fsopts->size = roundup(fsopts->size, ffs_opts->bsize);
413 /* calculate density if necessary */
414 if (ffs_opts->density == -1)
415 ffs_opts->density = fsopts->size / fsopts->inodes + 1;
417 if (debug & DEBUG_FS_VALIDATE) {
418 printf("ffs_validate: after defaults set:\n");
419 ffs_dump_fsinfo(fsopts);
420 printf("ffs_validate: dir %s; %lld bytes, %lld inodes\n",
421 dir, (long long)fsopts->size, (long long)fsopts->inodes);
423 sectorsize = fsopts->sectorsize; /* XXX - see earlier */
425 /* now check calculated sizes vs requested sizes */
426 if (fsopts->maxsize > 0 && fsopts->size > fsopts->maxsize) {
427 errx(1, "`%s' size of %lld is larger than the maxsize of %lld.",
428 dir, (long long)fsopts->size, (long long)fsopts->maxsize);
434 ffs_dump_fsinfo(fsinfo_t *f)
437 ffs_opt_t *fs = f->fs_specific;
439 printf("fsopts at %p\n", f);
441 printf("\tsize %lld, inodes %lld, curinode %u\n",
442 (long long)f->size, (long long)f->inodes, f->curinode);
444 printf("\tminsize %lld, maxsize %lld\n",
445 (long long)f->minsize, (long long)f->maxsize);
446 printf("\tfree files %lld, freefile %% %d\n",
447 (long long)f->freefiles, f->freefilepc);
448 printf("\tfree blocks %lld, freeblock %% %d\n",
449 (long long)f->freeblocks, f->freeblockpc);
450 printf("\tneedswap %d, sectorsize %d\n", f->needswap, f->sectorsize);
452 printf("\tbsize %d, fsize %d, cpg %d, density %d\n",
453 fs->bsize, fs->fsize, fs->cpg, fs->density);
454 printf("\tnsectors %d, rpm %d, minfree %d\n",
455 fs->nsectors, fs->rpm, fs->minfree);
456 printf("\tmaxcontig %d, maxbpg %d\n",
457 fs->maxcontig, fs->maxbpg);
458 printf("\toptimization %s\n",
459 fs->optimization == FS_OPTSPACE ? "space" : "time");
464 ffs_create_image(const char *image, fsinfo_t *fsopts)
466 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
474 assert (image != NULL);
475 assert (fsopts != NULL);
478 if ((fsopts->fd = open(image, O_RDWR | O_CREAT | O_TRUNC, 0666))
480 warn("Can't open `%s' for writing", image);
485 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
486 if (fstatvfs(fsopts->fd, &sfs) == -1) {
489 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
490 warn("can't fstatvfs `%s', using default %d byte chunk",
493 bufsize = sfs.f_iosize;
495 bufrem = fsopts->size;
496 if (debug & DEBUG_FS_CREATE_IMAGE)
498 "zero-ing image `%s', %lld sectors, using %d byte chunks\n",
499 image, (long long)bufrem, bufsize);
500 if ((buf = calloc(1, bufsize)) == NULL) {
501 warn("Can't create buffer for sector");
505 i = write(fsopts->fd, buf, MIN(bufsize, bufrem));
507 warn("zeroing image, %lld bytes to go",
516 /* make the file system */
517 if (debug & DEBUG_FS_CREATE_IMAGE)
518 printf("calling mkfs(\"%s\", ...)\n", image);
519 fs = ffs_mkfs(image, fsopts);
520 fsopts->superblock = (void *)fs;
521 if (debug & DEBUG_FS_CREATE_IMAGE) {
524 t = (time_t)((struct fs *)fsopts->superblock)->fs_time;
525 printf("mkfs returned %p; fs_time %s",
526 fsopts->superblock, ctime(&t));
527 printf("fs totals: nbfree %lld, nffree %lld, nifree %lld, ndir %lld\n",
528 (long long)fs->fs_cstotal.cs_nbfree,
529 (long long)fs->fs_cstotal.cs_nffree,
530 (long long)fs->fs_cstotal.cs_nifree,
531 (long long)fs->fs_cstotal.cs_ndir);
534 if (fs->fs_cstotal.cs_nifree + ROOTINO < fsopts->inodes) {
536 "Image file `%s' has %lld free inodes; %lld are required.",
538 (long long)(fs->fs_cstotal.cs_nifree + ROOTINO),
539 (long long)fsopts->inodes);
547 ffs_size_dir(fsnode *root, fsinfo_t *fsopts)
549 struct direct tmpdir;
551 int curdirsize, this;
552 ffs_opt_t *ffs_opts = fsopts->fs_specific;
554 /* node may be NULL (empty directory) */
555 assert(fsopts != NULL);
556 assert(ffs_opts != NULL);
558 if (debug & DEBUG_FS_SIZE_DIR)
559 printf("ffs_size_dir: entry: bytes %lld inodes %lld\n",
560 (long long)fsopts->size, (long long)fsopts->inodes);
562 #define ADDDIRENT(e) do { \
563 tmpdir.d_namlen = strlen((e)); \
564 this = DIRSIZ_SWAP(0, &tmpdir, 0); \
565 if (debug & DEBUG_FS_SIZE_DIR_ADD_DIRENT) \
566 printf("ADDDIRENT: was: %s (%d) this %d cur %d\n", \
567 e, tmpdir.d_namlen, this, curdirsize); \
568 if (this + curdirsize > roundup(curdirsize, DIRBLKSIZ)) \
569 curdirsize = roundup(curdirsize, DIRBLKSIZ); \
570 curdirsize += this; \
571 if (debug & DEBUG_FS_SIZE_DIR_ADD_DIRENT) \
572 printf("ADDDIRENT: now: %s (%d) this %d cur %d\n", \
573 e, tmpdir.d_namlen, this, curdirsize); \
577 * XXX this needs to take into account extra space consumed
578 * by indirect blocks, etc.
580 #define ADDSIZE(x) do { \
581 fsopts->size += roundup((x), ffs_opts->fsize); \
585 for (node = root; node != NULL; node = node->next) {
586 ADDDIRENT(node->name);
587 if (node == root) { /* we're at "." */
588 assert(strcmp(node->name, ".") == 0);
590 } else if ((node->inode->flags & FI_SIZED) == 0) {
591 /* don't count duplicate names */
592 node->inode->flags |= FI_SIZED;
593 if (debug & DEBUG_FS_SIZE_DIR_NODE)
594 printf("ffs_size_dir: `%s' size %lld\n",
596 (long long)node->inode->st.st_size);
598 if (node->type == S_IFREG)
599 ADDSIZE(node->inode->st.st_size);
600 if (node->type == S_IFLNK) {
603 slen = strlen(node->symlink) + 1;
604 if (slen >= (ffs_opts->version == 1 ?
610 if (node->type == S_IFDIR)
611 ffs_size_dir(node->child, fsopts);
615 if (debug & DEBUG_FS_SIZE_DIR)
616 printf("ffs_size_dir: exit: size %lld inodes %lld\n",
617 (long long)fsopts->size, (long long)fsopts->inodes);
621 ffs_build_dinode1(struct ufs1_dinode *dinp, dirbuf_t *dbufp, fsnode *cur,
622 fsnode *root, fsinfo_t *fsopts)
627 memset(dinp, 0, sizeof(*dinp));
628 dinp->di_mode = cur->inode->st.st_mode;
629 dinp->di_nlink = cur->inode->nlink;
630 dinp->di_size = cur->inode->st.st_size;
631 dinp->di_atime = cur->inode->st.st_atime;
632 dinp->di_mtime = cur->inode->st.st_mtime;
633 dinp->di_ctime = cur->inode->st.st_ctime;
634 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
635 dinp->di_atimensec = cur->inode->st.st_atimensec;
636 dinp->di_mtimensec = cur->inode->st.st_mtimensec;
637 dinp->di_ctimensec = cur->inode->st.st_ctimensec;
639 #if HAVE_STRUCT_STAT_ST_FLAGS
640 dinp->di_flags = cur->inode->st.st_flags;
642 #if HAVE_STRUCT_STAT_ST_GEN
643 dinp->di_gen = cur->inode->st.st_gen;
645 dinp->di_uid = cur->inode->st.st_uid;
646 dinp->di_gid = cur->inode->st.st_gid;
647 /* not set: di_db, di_ib, di_blocks, di_spare */
650 if (cur == root) { /* "."; write dirbuf */
652 dinp->di_size = dbufp->size;
653 } else if (S_ISBLK(cur->type) || S_ISCHR(cur->type)) {
654 dinp->di_size = 0; /* a device */
656 ufs_rw32(cur->inode->st.st_rdev, fsopts->needswap);
657 } else if (S_ISLNK(cur->type)) { /* symlink */
658 slen = strlen(cur->symlink);
659 if (slen < MAXSYMLINKLEN_UFS1) { /* short link */
660 memcpy(dinp->di_db, cur->symlink, slen);
662 membuf = cur->symlink;
663 dinp->di_size = slen;
669 ffs_build_dinode2(struct ufs2_dinode *dinp, dirbuf_t *dbufp, fsnode *cur,
670 fsnode *root, fsinfo_t *fsopts)
675 memset(dinp, 0, sizeof(*dinp));
676 dinp->di_mode = cur->inode->st.st_mode;
677 dinp->di_nlink = cur->inode->nlink;
678 dinp->di_size = cur->inode->st.st_size;
679 dinp->di_atime = cur->inode->st.st_atime;
680 dinp->di_mtime = cur->inode->st.st_mtime;
681 dinp->di_ctime = cur->inode->st.st_ctime;
682 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
683 dinp->di_atimensec = cur->inode->st.st_atimensec;
684 dinp->di_mtimensec = cur->inode->st.st_mtimensec;
685 dinp->di_ctimensec = cur->inode->st.st_ctimensec;
687 #if HAVE_STRUCT_STAT_ST_FLAGS
688 dinp->di_flags = cur->inode->st.st_flags;
690 #if HAVE_STRUCT_STAT_ST_GEN
691 dinp->di_gen = cur->inode->st.st_gen;
693 #if HAVE_STRUCT_STAT_BIRTHTIME
694 dinp->di_birthtime = cur->inode->st.st_birthtime;
695 dinp->di_birthnsec = cur->inode->st.st_birthtimensec;
697 dinp->di_uid = cur->inode->st.st_uid;
698 dinp->di_gid = cur->inode->st.st_gid;
699 /* not set: di_db, di_ib, di_blocks, di_spare */
702 if (cur == root) { /* "."; write dirbuf */
704 dinp->di_size = dbufp->size;
705 } else if (S_ISBLK(cur->type) || S_ISCHR(cur->type)) {
706 dinp->di_size = 0; /* a device */
708 ufs_rw64(cur->inode->st.st_rdev, fsopts->needswap);
709 } else if (S_ISLNK(cur->type)) { /* symlink */
710 slen = strlen(cur->symlink);
711 if (slen < MAXSYMLINKLEN_UFS2) { /* short link */
712 memcpy(dinp->di_db, cur->symlink, slen);
714 membuf = cur->symlink;
715 dinp->di_size = slen;
721 ffs_populate_dir(const char *dir, fsnode *root, fsinfo_t *fsopts)
727 char path[MAXPATHLEN + 1];
728 ffs_opt_t *ffs_opts = fsopts->fs_specific;
731 assert(root != NULL);
732 assert(fsopts != NULL);
733 assert(ffs_opts != NULL);
735 (void)memset(&dirbuf, 0, sizeof(dirbuf));
737 if (debug & DEBUG_FS_POPULATE)
738 printf("ffs_populate_dir: PASS 1 dir %s node %p\n", dir, root);
741 * pass 1: allocate inode numbers, build directory `file'
743 for (cur = root; cur != NULL; cur = cur->next) {
744 if ((cur->inode->flags & FI_ALLOCATED) == 0) {
745 cur->inode->flags |= FI_ALLOCATED;
746 if (cur == root && cur->parent != NULL)
747 cur->inode->ino = cur->parent->inode->ino;
749 cur->inode->ino = fsopts->curinode;
753 ffs_make_dirbuf(&dirbuf, cur->name, cur, fsopts->needswap);
754 if (cur == root) { /* we're at "."; add ".." */
755 ffs_make_dirbuf(&dirbuf, "..",
756 cur->parent == NULL ? cur : cur->parent->first,
758 root->inode->nlink++; /* count my parent's link */
759 } else if (cur->child != NULL)
760 root->inode->nlink++; /* count my child's link */
763 * XXX possibly write file and long symlinks here,
764 * ensuring that blocks get written before inodes?
765 * otoh, this isn't a real filesystem, so who
766 * cares about ordering? :-)
769 if (debug & DEBUG_FS_POPULATE_DIRBUF)
770 ffs_dump_dirbuf(&dirbuf, dir, fsopts->needswap);
773 * pass 2: write out dirbuf, then non-directories at this level
775 if (debug & DEBUG_FS_POPULATE)
776 printf("ffs_populate_dir: PASS 2 dir %s\n", dir);
777 for (cur = root; cur != NULL; cur = cur->next) {
778 if (cur->inode->flags & FI_WRITTEN)
779 continue; /* skip hard-linked entries */
780 cur->inode->flags |= FI_WRITTEN;
782 if (cur->contents == NULL) {
783 if (snprintf(path, sizeof(path), "%s/%s/%s", cur->root,
784 cur->path, cur->name) >= (int)sizeof(path))
785 errx(1, "Pathname too long.");
788 if (cur->child != NULL)
789 continue; /* child creates own inode */
791 /* build on-disk inode */
792 if (ffs_opts->version == 1)
793 membuf = ffs_build_dinode1(&din.ffs1_din, &dirbuf, cur,
796 membuf = ffs_build_dinode2(&din.ffs2_din, &dirbuf, cur,
799 if (debug & DEBUG_FS_POPULATE_NODE) {
800 printf("ffs_populate_dir: writing ino %d, %s",
801 cur->inode->ino, inode_type(cur->type));
802 if (cur->inode->nlink > 1)
803 printf(", nlink %d", cur->inode->nlink);
807 if (membuf != NULL) {
808 ffs_write_file(&din, cur->inode->ino, membuf, fsopts);
809 } else if (S_ISREG(cur->type)) {
810 ffs_write_file(&din, cur->inode->ino,
811 (cur->contents) ? cur->contents : path, fsopts);
813 assert (! S_ISDIR(cur->type));
814 ffs_write_inode(&din, cur->inode->ino, fsopts);
819 * pass 3: write out sub-directories
821 if (debug & DEBUG_FS_POPULATE)
822 printf("ffs_populate_dir: PASS 3 dir %s\n", dir);
823 for (cur = root; cur != NULL; cur = cur->next) {
824 if (cur->child == NULL)
826 if (snprintf(path, sizeof(path), "%s/%s", dir, cur->name)
828 errx(1, "Pathname too long.");
829 if (! ffs_populate_dir(path, cur->child, fsopts))
833 if (debug & DEBUG_FS_POPULATE)
834 printf("ffs_populate_dir: DONE dir %s\n", dir);
837 if (dirbuf.buf != NULL)
844 ffs_write_file(union dinode *din, uint32_t ino, void *buf, fsinfo_t *fsopts)
848 off_t bufleft, chunk, offset;
852 ffs_opt_t *ffs_opts = fsopts->fs_specific;
854 assert (din != NULL);
855 assert (buf != NULL);
856 assert (fsopts != NULL);
857 assert (ffs_opts != NULL);
859 isfile = S_ISREG(DIP(din, mode));
864 in.i_fs = (struct fs *)fsopts->superblock;
866 if (debug & DEBUG_FS_WRITE_FILE) {
868 "ffs_write_file: ino %u, din %p, isfile %d, %s, size %lld",
869 ino, din, isfile, inode_type(DIP(din, mode) & S_IFMT),
870 (long long)DIP(din, size));
872 printf(", file '%s'\n", (char *)buf);
874 printf(", buffer %p\n", buf);
878 in.i_size = DIP(din, size);
879 if (ffs_opts->version == 1)
880 memcpy(&in.i_din.ffs1_din, &din->ffs1_din,
881 sizeof(in.i_din.ffs1_din));
883 memcpy(&in.i_din.ffs2_din, &din->ffs2_din,
884 sizeof(in.i_din.ffs2_din));
885 in.i_fd = fsopts->fd;
887 if (DIP(din, size) == 0)
888 goto write_inode_and_leave; /* mmm, cheating */
891 if ((fbuf = malloc(ffs_opts->bsize)) == NULL)
892 err(1, "Allocating memory for write buffer");
893 if ((ffd = open((char *)buf, O_RDONLY, 0444)) == -1) {
894 warn("Can't open `%s' for reading", (char *)buf);
895 goto leave_ffs_write_file;
902 for (bufleft = DIP(din, size); bufleft > 0; bufleft -= chunk) {
903 chunk = MIN(bufleft, ffs_opts->bsize);
906 else if ((nread = read(ffd, fbuf, chunk)) == -1)
907 err(EXIT_FAILURE, "Reading `%s', %lld bytes to go",
908 (char *)buf, (long long)bufleft);
909 else if (nread != chunk)
910 errx(EXIT_FAILURE, "Reading `%s', %lld bytes to go, "
911 "read %zd bytes, expected %ju bytes, does "
912 "metalog size= attribute mismatch source size?",
913 (char *)buf, (long long)bufleft, nread,
917 offset = DIP(din, size) - bufleft;
918 if (debug & DEBUG_FS_WRITE_FILE_BLOCK)
920 "ffs_write_file: write %p offset %lld size %lld left %lld\n",
921 p, (long long)offset,
922 (long long)chunk, (long long)bufleft);
924 * XXX if holey support is desired, do the check here
926 * XXX might need to write out last bit in fragroundup
927 * sized chunk. however, ffs_balloc() handles this for us
929 errno = ffs_balloc(&in, offset, chunk, &bp);
933 "Writing inode %d (%s), bytes %lld + %lld",
935 isfile ? (char *)buf :
936 inode_type(DIP(din, mode) & S_IFMT),
937 (long long)offset, (long long)chunk);
938 memcpy(bp->b_data, p, chunk);
941 goto bad_ffs_write_file;
947 write_inode_and_leave:
948 ffs_write_inode(&in.i_din, in.i_number, fsopts);
950 leave_ffs_write_file:
959 ffs_dump_dirbuf(dirbuf_t *dbuf, const char *dir, int needswap)
965 assert (dbuf != NULL);
966 assert (dir != NULL);
967 printf("ffs_dump_dirbuf: dir %s size %d cur %d\n",
968 dir, dbuf->size, dbuf->cur);
970 for (i = 0; i < dbuf->size; ) {
971 de = (struct direct *)(dbuf->buf + i);
972 reclen = ufs_rw16(de->d_reclen, needswap);
974 " inode %4d %7s offset %4d reclen %3d namlen %3d name %s\n",
975 ufs_rw32(de->d_ino, needswap),
976 inode_type(DTTOIF(de->d_type)), i, reclen,
977 de->d_namlen, de->d_name);
984 ffs_make_dirbuf(dirbuf_t *dbuf, const char *name, fsnode *node, int needswap)
986 struct direct de, *dp;
987 uint16_t llen, reclen;
990 assert (dbuf != NULL);
991 assert (name != NULL);
992 assert (node != NULL);
993 /* create direct entry */
994 (void)memset(&de, 0, sizeof(de));
995 de.d_ino = ufs_rw32(node->inode->ino, needswap);
996 de.d_type = IFTODT(node->type);
997 de.d_namlen = (uint8_t)strlen(name);
998 strcpy(de.d_name, name);
999 reclen = DIRSIZ_SWAP(0, &de, needswap);
1000 de.d_reclen = ufs_rw16(reclen, needswap);
1002 dp = (struct direct *)(dbuf->buf + dbuf->cur);
1005 llen = DIRSIZ_SWAP(0, dp, needswap);
1007 if (debug & DEBUG_FS_MAKE_DIRBUF)
1009 "ffs_make_dirbuf: dbuf siz %d cur %d lastlen %d\n"
1010 " ino %d type %d reclen %d namlen %d name %.30s\n",
1011 dbuf->size, dbuf->cur, llen,
1012 ufs_rw32(de.d_ino, needswap), de.d_type, reclen,
1013 de.d_namlen, de.d_name);
1015 if (reclen + dbuf->cur + llen > roundup(dbuf->size, DIRBLKSIZ)) {
1016 if (debug & DEBUG_FS_MAKE_DIRBUF)
1017 printf("ffs_make_dirbuf: growing buf to %d\n",
1018 dbuf->size + DIRBLKSIZ);
1019 if ((newbuf = realloc(dbuf->buf, dbuf->size + DIRBLKSIZ)) == NULL)
1020 err(1, "Allocating memory for directory buffer");
1022 dbuf->size += DIRBLKSIZ;
1023 memset(dbuf->buf + dbuf->size - DIRBLKSIZ, 0, DIRBLKSIZ);
1024 dbuf->cur = dbuf->size - DIRBLKSIZ;
1025 } else if (dp) { /* shrink end of previous */
1026 dp->d_reclen = ufs_rw16(llen,needswap);
1029 dp = (struct direct *)(dbuf->buf + dbuf->cur);
1030 memcpy(dp, &de, reclen);
1031 dp->d_reclen = ufs_rw16(dbuf->size - dbuf->cur, needswap);
1035 * cribbed from sys/ufs/ffs/ffs_alloc.c
1038 ffs_write_inode(union dinode *dp, uint32_t ino, const fsinfo_t *fsopts)
1041 struct ufs1_dinode *dp1;
1042 struct ufs2_dinode *dp2, *dip;
1047 char sbbuf[FFS_MAXBSIZE];
1049 ffs_opt_t *ffs_opts = fsopts->fs_specific;
1051 assert (dp != NULL);
1053 assert (fsopts != NULL);
1054 assert (ffs_opts != NULL);
1056 fs = (struct fs *)fsopts->superblock;
1057 cg = ino_to_cg(fs, ino);
1058 cgino = ino % fs->fs_ipg;
1059 if (debug & DEBUG_FS_WRITE_INODE)
1060 printf("ffs_write_inode: din %p ino %u cg %d cgino %d\n",
1061 dp, ino, cg, cgino);
1063 ffs_rdfs(fsbtodb(fs, cgtod(fs, cg)), (int)fs->fs_cgsize, &sbbuf,
1065 cgp = (struct cg *)sbbuf;
1066 if (!cg_chkmagic_swap(cgp, fsopts->needswap))
1067 errx(1, "ffs_write_inode: cg %d: bad magic number", cg);
1069 assert (isclr(cg_inosused_swap(cgp, fsopts->needswap), cgino));
1071 buf = malloc(fs->fs_bsize);
1073 errx(1, "ffs_write_inode: cg %d: can't alloc inode block", cg);
1075 dp1 = (struct ufs1_dinode *)buf;
1076 dp2 = (struct ufs2_dinode *)buf;
1078 if (fs->fs_cstotal.cs_nifree == 0)
1079 errx(1, "ffs_write_inode: fs out of inodes for ino %u",
1081 if (fs->fs_cs(fs, cg).cs_nifree == 0)
1083 "ffs_write_inode: cg %d out of inodes for ino %u",
1085 setbit(cg_inosused_swap(cgp, fsopts->needswap), cgino);
1086 ufs_add32(cgp->cg_cs.cs_nifree, -1, fsopts->needswap);
1087 fs->fs_cstotal.cs_nifree--;
1088 fs->fs_cs(fs, cg).cs_nifree--;
1089 if (S_ISDIR(DIP(dp, mode))) {
1090 ufs_add32(cgp->cg_cs.cs_ndir, 1, fsopts->needswap);
1091 fs->fs_cstotal.cs_ndir++;
1092 fs->fs_cs(fs, cg).cs_ndir++;
1096 * Initialize inode blocks on the fly for UFS2.
1098 initediblk = ufs_rw32(cgp->cg_initediblk, fsopts->needswap);
1099 if (ffs_opts->version == 2 && cgino + INOPB(fs) > initediblk &&
1100 initediblk < ufs_rw32(cgp->cg_niblk, fsopts->needswap)) {
1101 memset(buf, 0, fs->fs_bsize);
1102 dip = (struct ufs2_dinode *)buf;
1103 srandom(time(NULL));
1104 for (i = 0; i < INOPB(fs); i++) {
1105 dip->di_gen = random() / 2 + 1;
1108 ffs_wtfs(fsbtodb(fs, ino_to_fsba(fs,
1109 cg * fs->fs_ipg + initediblk)),
1110 fs->fs_bsize, buf, fsopts);
1111 initediblk += INOPB(fs);
1112 cgp->cg_initediblk = ufs_rw32(initediblk, fsopts->needswap);
1116 ffs_wtfs(fsbtodb(fs, cgtod(fs, cg)), (int)fs->fs_cgsize, &sbbuf,
1119 /* now write inode */
1120 d = fsbtodb(fs, ino_to_fsba(fs, ino));
1121 ffs_rdfs(d, fs->fs_bsize, buf, fsopts);
1122 if (fsopts->needswap) {
1123 if (ffs_opts->version == 1)
1124 ffs_dinode1_swap(&dp->ffs1_din,
1125 &dp1[ino_to_fsbo(fs, ino)]);
1127 ffs_dinode2_swap(&dp->ffs2_din,
1128 &dp2[ino_to_fsbo(fs, ino)]);
1130 if (ffs_opts->version == 1)
1131 dp1[ino_to_fsbo(fs, ino)] = dp->ffs1_din;
1133 dp2[ino_to_fsbo(fs, ino)] = dp->ffs2_din;
1135 ffs_wtfs(d, fs->fs_bsize, buf, fsopts);
1140 panic(const char *fmt, ...)