2 * Copyright (c) 2003-2010 Tim Kientzle
3 * Copyright (c) 2012 Michihiro NAKAJIMA
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer
11 * in this position and unchanged.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #include "archive_platform.h"
29 __FBSDID("$FreeBSD$");
31 #if !defined(_WIN32) || defined(__CYGWIN__)
33 #ifdef HAVE_SYS_TYPES_H
34 #include <sys/types.h>
39 #ifdef HAVE_SYS_EXTATTR_H
40 #include <sys/extattr.h>
42 #if defined(HAVE_SYS_XATTR_H)
43 #include <sys/xattr.h>
44 #elif defined(HAVE_ATTR_XATTR_H)
45 #include <attr/xattr.h>
50 #ifdef HAVE_SYS_IOCTL_H
51 #include <sys/ioctl.h>
53 #ifdef HAVE_SYS_STAT_H
56 #ifdef HAVE_SYS_TIME_H
59 #ifdef HAVE_SYS_UTIME_H
60 #include <sys/utime.h>
62 #ifdef HAVE_COPYFILE_H
74 #ifdef HAVE_LANGINFO_H
77 #ifdef HAVE_LINUX_FS_H
78 #include <linux/fs.h> /* for Linux file flags */
81 * Some Linux distributions have both linux/ext2_fs.h and ext2fs/ext2_fs.h.
82 * As the include guards don't agree, the order of include is important.
84 #ifdef HAVE_LINUX_EXT2_FS_H
85 #include <linux/ext2_fs.h> /* for Linux file flags */
87 #if defined(HAVE_EXT2FS_EXT2_FS_H) && !defined(__CYGWIN__)
88 #include <ext2fs/ext2_fs.h> /* Linux file flags, broken on Cygwin */
109 #ifdef F_GETTIMES /* Tru64 specific */
110 #include <sys/fcntl1.h>
114 * Macro to cast st_mtime and time_t to an int64 so that 2 numbers can reliably be compared.
116 * It assumes that the input is an integer type of no more than 64 bits.
117 * If the number is less than zero, t must be a signed type, so it fits in
118 * int64_t. Otherwise, it's a nonnegative value so we can cast it to uint64_t
119 * without loss. But it could be a large unsigned value, so we have to clip it
122 #define to_int64_time(t) \
123 ((t) < 0 ? (int64_t)(t) : (uint64_t)(t) > (uint64_t)INT64_MAX ? INT64_MAX : (int64_t)(t))
126 #include <TargetConditionals.h>
127 #if TARGET_OS_MAC && !TARGET_OS_EMBEDDED && HAVE_QUARANTINE_H
128 #include <quarantine.h>
129 #define HAVE_QUARANTINE 1
137 /* TODO: Support Mac OS 'quarantine' feature. This is really just a
138 * standard tag to mark files that have been downloaded as "tainted".
139 * On Mac OS, we should mark the extracted files as tainted if the
140 * archive being read was tainted. Windows has a similar feature; we
141 * should investigate ways to support this generically. */
144 #include "archive_acl_private.h"
145 #include "archive_string.h"
146 #include "archive_endian.h"
147 #include "archive_entry.h"
148 #include "archive_private.h"
149 #include "archive_write_disk_private.h"
158 /* Ignore non-int O_NOFOLLOW constant. */
159 /* gnulib's fcntl.h does this on AIX, but it seems practical everywhere */
160 #if defined O_NOFOLLOW && !(INT_MIN <= O_NOFOLLOW && O_NOFOLLOW <= INT_MAX)
169 struct fixup_entry *next;
170 struct archive_acl acl;
176 unsigned long atime_nanos;
177 unsigned long birthtime_nanos;
178 unsigned long mtime_nanos;
179 unsigned long ctime_nanos;
180 unsigned long fflags_set;
181 size_t mac_metadata_size;
183 int fixup; /* bitmask of what needs fixing */
188 * We use a bitmask to track which operations remain to be done for
189 * this file. In particular, this helps us avoid unnecessary
190 * operations when it's possible to take care of one step as a
191 * side-effect of another. For example, mkdir() can specify the mode
192 * for the newly-created object but symlink() cannot. This means we
193 * can skip chmod() if mkdir() succeeded, but we must explicitly
194 * chmod() if we're trying to create a directory that already exists
195 * (mkdir() failed) or if we're restoring a symlink. Similarly, we
196 * need to verify UID/GID before trying to restore SUID/SGID bits;
197 * that verification can occur explicitly through a stat() call or
198 * implicitly because of a successful chown() call.
200 #define TODO_MODE_FORCE 0x40000000
201 #define TODO_MODE_BASE 0x20000000
202 #define TODO_SUID 0x10000000
203 #define TODO_SUID_CHECK 0x08000000
204 #define TODO_SGID 0x04000000
205 #define TODO_SGID_CHECK 0x02000000
206 #define TODO_APPLEDOUBLE 0x01000000
207 #define TODO_MODE (TODO_MODE_BASE|TODO_SUID|TODO_SGID)
208 #define TODO_TIMES ARCHIVE_EXTRACT_TIME
209 #define TODO_OWNER ARCHIVE_EXTRACT_OWNER
210 #define TODO_FFLAGS ARCHIVE_EXTRACT_FFLAGS
211 #define TODO_ACLS ARCHIVE_EXTRACT_ACL
212 #define TODO_XATTR ARCHIVE_EXTRACT_XATTR
213 #define TODO_MAC_METADATA ARCHIVE_EXTRACT_MAC_METADATA
214 #define TODO_HFS_COMPRESSION ARCHIVE_EXTRACT_HFS_COMPRESSION_FORCED
216 struct archive_write_disk {
217 struct archive archive;
220 struct fixup_entry *fixup_list;
221 struct fixup_entry *current_fixup;
224 int64_t skip_file_dev;
225 int64_t skip_file_ino;
228 int64_t (*lookup_gid)(void *private, const char *gname, int64_t gid);
229 void (*cleanup_gid)(void *private);
230 void *lookup_gid_data;
231 int64_t (*lookup_uid)(void *private, const char *uname, int64_t uid);
232 void (*cleanup_uid)(void *private);
233 void *lookup_uid_data;
236 * Full path of last file to satisfy symlink checks.
238 struct archive_string path_safe;
241 * Cached stat data from disk for the current entry.
242 * If this is valid, pst points to st. Otherwise,
248 /* Information about the object being restored right now. */
249 struct archive_entry *entry; /* Entry being extracted. */
250 char *name; /* Name of entry, possibly edited. */
251 struct archive_string _name_data; /* backing store for 'name' */
252 /* Tasks remaining for this object. */
254 /* Tasks deferred until end-of-archive. */
256 /* Options requested by the client. */
258 /* Handle for the file we're restoring. */
260 /* Current offset for writing data to the file. */
262 /* Last offset actually written to disk. */
264 /* Total bytes actually written to files. */
265 int64_t total_bytes_written;
266 /* Maximum size of file, -1 if unknown. */
268 /* Dir we were in before this restore; only for deep paths. */
270 /* Mode we should use for this entry; affected by _PERM and umask. */
272 /* UID/GID to use in restoring this entry. */
278 /* Xattr "com.apple.decmpfs". */
279 uint32_t decmpfs_attr_size;
280 unsigned char *decmpfs_header_p;
281 /* ResourceFork set options used for fsetxattr. */
282 int rsrc_xattr_options;
283 /* Xattr "com.apple.ResourceFork". */
284 unsigned char *resource_fork;
285 size_t resource_fork_allocated_size;
286 unsigned int decmpfs_block_count;
287 uint32_t *decmpfs_block_info;
288 /* Buffer for compressed data. */
289 unsigned char *compressed_buffer;
290 size_t compressed_buffer_size;
291 size_t compressed_buffer_remaining;
292 /* The offset of the ResourceFork where compressed data will
294 uint32_t compressed_rsrc_position;
295 uint32_t compressed_rsrc_position_v;
296 /* Buffer for uncompressed data. */
297 char *uncompressed_buffer;
298 size_t block_remaining_bytes;
299 size_t file_remaining_bytes;
303 int decmpfs_compression_level;
308 * Default mode for dirs created automatically (will be modified by umask).
309 * Note that POSIX specifies 0777 for implicitly-created dirs, "modified
310 * by the process' file creation mask."
312 #define DEFAULT_DIR_MODE 0777
314 * Dir modes are restored in two steps: During the extraction, the permissions
315 * in the archive are modified to match the following limits. During
316 * the post-extract fixup pass, the permissions from the archive are
319 #define MINIMUM_DIR_MODE 0700
320 #define MAXIMUM_DIR_MODE 0775
323 * Maximum uncompressed size of a decmpfs block.
325 #define MAX_DECMPFS_BLOCK_SIZE (64 * 1024)
327 * HFS+ compression type.
329 #define CMP_XATTR 3/* Compressed data in xattr. */
330 #define CMP_RESOURCE_FORK 4/* Compressed data in resource fork. */
332 * HFS+ compression resource fork.
334 #define RSRC_H_SIZE 260 /* Base size of Resource fork header. */
335 #define RSRC_F_SIZE 50 /* Size of Resource fork footer. */
336 /* Size to write compressed data to resource fork. */
337 #define COMPRESSED_W_SIZE (64 * 1024)
338 /* decmpfs definitions. */
339 #define MAX_DECMPFS_XATTR_SIZE 3802
340 #ifndef DECMPFS_XATTR_NAME
341 #define DECMPFS_XATTR_NAME "com.apple.decmpfs"
343 #define DECMPFS_MAGIC 0x636d7066
344 #define DECMPFS_COMPRESSION_MAGIC 0
345 #define DECMPFS_COMPRESSION_TYPE 4
346 #define DECMPFS_UNCOMPRESSED_SIZE 8
347 #define DECMPFS_HEADER_SIZE 16
349 #define HFS_BLOCKS(s) ((s) >> 12)
351 static void fsobj_error(int *, struct archive_string *, int, const char *,
353 static int check_symlinks_fsobj(char *, int *, struct archive_string *,
355 static int check_symlinks(struct archive_write_disk *);
356 static int create_filesystem_object(struct archive_write_disk *);
357 static struct fixup_entry *current_fixup(struct archive_write_disk *,
358 const char *pathname);
359 #if defined(HAVE_FCHDIR) && defined(PATH_MAX)
360 static void edit_deep_directories(struct archive_write_disk *ad);
362 static int cleanup_pathname_fsobj(char *, int *, struct archive_string *,
364 static int cleanup_pathname(struct archive_write_disk *);
365 static int create_dir(struct archive_write_disk *, char *);
366 static int create_parent_dir(struct archive_write_disk *, char *);
367 static ssize_t hfs_write_data_block(struct archive_write_disk *,
368 const char *, size_t);
369 static int fixup_appledouble(struct archive_write_disk *, const char *);
370 static int older(struct stat *, struct archive_entry *);
371 static int restore_entry(struct archive_write_disk *);
372 static int set_mac_metadata(struct archive_write_disk *, const char *,
373 const void *, size_t);
374 static int set_xattrs(struct archive_write_disk *);
375 static int clear_nochange_fflags(struct archive_write_disk *);
376 static int set_fflags(struct archive_write_disk *);
377 static int set_fflags_platform(struct archive_write_disk *, int fd,
378 const char *name, mode_t mode,
379 unsigned long fflags_set, unsigned long fflags_clear);
380 static int set_ownership(struct archive_write_disk *);
381 static int set_mode(struct archive_write_disk *, int mode);
382 static int set_time(int, int, const char *, time_t, long, time_t, long);
383 static int set_times(struct archive_write_disk *, int, int, const char *,
384 time_t, long, time_t, long, time_t, long, time_t, long);
385 static int set_times_from_entry(struct archive_write_disk *);
386 static struct fixup_entry *sort_dir_list(struct fixup_entry *p);
387 static ssize_t write_data_block(struct archive_write_disk *,
388 const char *, size_t);
390 static struct archive_vtable *archive_write_disk_vtable(void);
392 static int _archive_write_disk_close(struct archive *);
393 static int _archive_write_disk_free(struct archive *);
394 static int _archive_write_disk_header(struct archive *,
395 struct archive_entry *);
396 static int64_t _archive_write_disk_filter_bytes(struct archive *, int);
397 static int _archive_write_disk_finish_entry(struct archive *);
398 static ssize_t _archive_write_disk_data(struct archive *, const void *,
400 static ssize_t _archive_write_disk_data_block(struct archive *, const void *,
404 lazy_stat(struct archive_write_disk *a)
406 if (a->pst != NULL) {
407 /* Already have stat() data available. */
411 if (a->fd >= 0 && fstat(a->fd, &a->st) == 0) {
417 * XXX At this point, symlinks should not be hit, otherwise
418 * XXX a race occurred. Do we want to check explicitly for that?
420 if (lstat(a->name, &a->st) == 0) {
424 archive_set_error(&a->archive, errno, "Couldn't stat file");
425 return (ARCHIVE_WARN);
428 static struct archive_vtable *
429 archive_write_disk_vtable(void)
431 static struct archive_vtable av;
432 static int inited = 0;
435 av.archive_close = _archive_write_disk_close;
436 av.archive_filter_bytes = _archive_write_disk_filter_bytes;
437 av.archive_free = _archive_write_disk_free;
438 av.archive_write_header = _archive_write_disk_header;
439 av.archive_write_finish_entry
440 = _archive_write_disk_finish_entry;
441 av.archive_write_data = _archive_write_disk_data;
442 av.archive_write_data_block = _archive_write_disk_data_block;
449 _archive_write_disk_filter_bytes(struct archive *_a, int n)
451 struct archive_write_disk *a = (struct archive_write_disk *)_a;
452 (void)n; /* UNUSED */
453 if (n == -1 || n == 0)
454 return (a->total_bytes_written);
460 archive_write_disk_set_options(struct archive *_a, int flags)
462 struct archive_write_disk *a = (struct archive_write_disk *)_a;
470 * Extract this entry to disk.
472 * TODO: Validate hardlinks. According to the standards, we're
473 * supposed to check each extracted hardlink and squawk if it refers
474 * to a file that we didn't restore. I'm not entirely convinced this
475 * is a good idea, but more importantly: Is there any way to validate
476 * hardlinks without keeping a complete list of filenames from the
477 * entire archive?? Ugh.
481 _archive_write_disk_header(struct archive *_a, struct archive_entry *entry)
483 struct archive_write_disk *a = (struct archive_write_disk *)_a;
484 struct fixup_entry *fe;
487 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
488 ARCHIVE_STATE_HEADER | ARCHIVE_STATE_DATA,
489 "archive_write_disk_header");
490 archive_clear_error(&a->archive);
491 if (a->archive.state & ARCHIVE_STATE_DATA) {
492 r = _archive_write_disk_finish_entry(&a->archive);
493 if (r == ARCHIVE_FATAL)
497 /* Set up for this particular entry. */
499 a->current_fixup = NULL;
502 archive_entry_free(a->entry);
505 a->entry = archive_entry_clone(entry);
510 a->uid = a->user_uid;
511 a->mode = archive_entry_mode(a->entry);
512 if (archive_entry_size_is_set(a->entry))
513 a->filesize = archive_entry_size(a->entry);
516 archive_strcpy(&(a->_name_data), archive_entry_pathname(a->entry));
517 a->name = a->_name_data.s;
518 archive_clear_error(&a->archive);
521 * Clean up the requested path. This is necessary for correct
522 * dir restores; the dir restore logic otherwise gets messed
523 * up by nonsense like "dir/.".
525 ret = cleanup_pathname(a);
526 if (ret != ARCHIVE_OK)
530 * Query the umask so we get predictable mode settings.
531 * This gets done on every call to _write_header in case the
532 * user edits their umask during the extraction for some
535 umask(a->user_umask = umask(0));
537 /* Figure out what we need to do for this entry. */
538 a->todo = TODO_MODE_BASE;
539 if (a->flags & ARCHIVE_EXTRACT_PERM) {
540 a->todo |= TODO_MODE_FORCE; /* Be pushy about permissions. */
542 * SGID requires an extra "check" step because we
543 * cannot easily predict the GID that the system will
544 * assign. (Different systems assign GIDs to files
545 * based on a variety of criteria, including process
546 * credentials and the gid of the enclosing
547 * directory.) We can only restore the SGID bit if
548 * the file has the right GID, and we only know the
549 * GID if we either set it (see set_ownership) or if
550 * we've actually called stat() on the file after it
551 * was restored. Since there are several places at
552 * which we might verify the GID, we need a TODO bit
555 if (a->mode & S_ISGID)
556 a->todo |= TODO_SGID | TODO_SGID_CHECK;
558 * Verifying the SUID is simpler, but can still be
559 * done in multiple ways, hence the separate "check" bit.
561 if (a->mode & S_ISUID)
562 a->todo |= TODO_SUID | TODO_SUID_CHECK;
565 * User didn't request full permissions, so don't
566 * restore SUID, SGID bits and obey umask.
571 a->mode &= ~a->user_umask;
573 if (a->flags & ARCHIVE_EXTRACT_OWNER)
574 a->todo |= TODO_OWNER;
575 if (a->flags & ARCHIVE_EXTRACT_TIME)
576 a->todo |= TODO_TIMES;
577 if (a->flags & ARCHIVE_EXTRACT_ACL) {
578 if (archive_entry_filetype(a->entry) == AE_IFDIR)
579 a->deferred |= TODO_ACLS;
581 a->todo |= TODO_ACLS;
583 if (a->flags & ARCHIVE_EXTRACT_MAC_METADATA) {
584 if (archive_entry_filetype(a->entry) == AE_IFDIR)
585 a->deferred |= TODO_MAC_METADATA;
587 a->todo |= TODO_MAC_METADATA;
589 #if defined(__APPLE__) && defined(UF_COMPRESSED) && defined(HAVE_ZLIB_H)
590 if ((a->flags & ARCHIVE_EXTRACT_NO_HFS_COMPRESSION) == 0) {
591 unsigned long set, clear;
592 archive_entry_fflags(a->entry, &set, &clear);
593 if ((set & ~clear) & UF_COMPRESSED) {
594 a->todo |= TODO_HFS_COMPRESSION;
595 a->decmpfs_block_count = (unsigned)-1;
598 if ((a->flags & ARCHIVE_EXTRACT_HFS_COMPRESSION_FORCED) != 0 &&
599 (a->mode & AE_IFMT) == AE_IFREG && a->filesize > 0) {
600 a->todo |= TODO_HFS_COMPRESSION;
601 a->decmpfs_block_count = (unsigned)-1;
606 /* Check if the current file name is a type of the
607 * resource fork file. */
608 p = strrchr(a->name, '/');
613 if (p[0] == '.' && p[1] == '_') {
614 /* Do not compress "._XXX" files. */
615 a->todo &= ~TODO_HFS_COMPRESSION;
617 a->todo |= TODO_APPLEDOUBLE;
622 if (a->flags & ARCHIVE_EXTRACT_XATTR)
623 a->todo |= TODO_XATTR;
624 if (a->flags & ARCHIVE_EXTRACT_FFLAGS)
625 a->todo |= TODO_FFLAGS;
626 if (a->flags & ARCHIVE_EXTRACT_SECURE_SYMLINKS) {
627 ret = check_symlinks(a);
628 if (ret != ARCHIVE_OK)
631 #if defined(HAVE_FCHDIR) && defined(PATH_MAX)
632 /* If path exceeds PATH_MAX, shorten the path. */
633 edit_deep_directories(a);
636 ret = restore_entry(a);
638 #if defined(__APPLE__) && defined(UF_COMPRESSED) && defined(HAVE_ZLIB_H)
640 * Check if the filesystem the file is restoring on supports
641 * HFS+ Compression. If not, cancel HFS+ Compression.
643 if (a->todo | TODO_HFS_COMPRESSION) {
645 * NOTE: UF_COMPRESSED is ignored even if the filesystem
646 * supports HFS+ Compression because the file should
647 * have at least an extended attribute "com.apple.decmpfs"
648 * before the flag is set to indicate that the file have
649 * been compressed. If the filesystem does not support
650 * HFS+ Compression the system call will fail.
652 if (a->fd < 0 || fchflags(a->fd, UF_COMPRESSED) != 0)
653 a->todo &= ~TODO_HFS_COMPRESSION;
658 * TODO: There are rumours that some extended attributes must
659 * be restored before file data is written. If this is true,
660 * then we either need to write all extended attributes both
661 * before and after restoring the data, or find some rule for
662 * determining which must go first and which last. Due to the
663 * many ways people are using xattrs, this may prove to be an
664 * intractable problem.
668 /* If we changed directory above, restore it here. */
669 if (a->restore_pwd >= 0) {
670 r = fchdir(a->restore_pwd);
672 archive_set_error(&a->archive, errno,
676 close(a->restore_pwd);
682 * Fixup uses the unedited pathname from archive_entry_pathname(),
683 * because it is relative to the base dir and the edited path
684 * might be relative to some intermediate dir as a result of the
685 * deep restore logic.
687 if (a->deferred & TODO_MODE) {
688 fe = current_fixup(a, archive_entry_pathname(entry));
690 return (ARCHIVE_FATAL);
691 fe->fixup |= TODO_MODE_BASE;
695 if ((a->deferred & TODO_TIMES)
696 && (archive_entry_mtime_is_set(entry)
697 || archive_entry_atime_is_set(entry))) {
698 fe = current_fixup(a, archive_entry_pathname(entry));
700 return (ARCHIVE_FATAL);
702 fe->fixup |= TODO_TIMES;
703 if (archive_entry_atime_is_set(entry)) {
704 fe->atime = archive_entry_atime(entry);
705 fe->atime_nanos = archive_entry_atime_nsec(entry);
707 /* If atime is unset, use start time. */
708 fe->atime = a->start_time;
711 if (archive_entry_mtime_is_set(entry)) {
712 fe->mtime = archive_entry_mtime(entry);
713 fe->mtime_nanos = archive_entry_mtime_nsec(entry);
715 /* If mtime is unset, use start time. */
716 fe->mtime = a->start_time;
719 if (archive_entry_birthtime_is_set(entry)) {
720 fe->birthtime = archive_entry_birthtime(entry);
721 fe->birthtime_nanos = archive_entry_birthtime_nsec(
724 /* If birthtime is unset, use mtime. */
725 fe->birthtime = fe->mtime;
726 fe->birthtime_nanos = fe->mtime_nanos;
730 if (a->deferred & TODO_ACLS) {
731 fe = current_fixup(a, archive_entry_pathname(entry));
733 return (ARCHIVE_FATAL);
734 fe->fixup |= TODO_ACLS;
735 archive_acl_copy(&fe->acl, archive_entry_acl(entry));
738 if (a->deferred & TODO_MAC_METADATA) {
739 const void *metadata;
740 size_t metadata_size;
741 metadata = archive_entry_mac_metadata(a->entry, &metadata_size);
742 if (metadata != NULL && metadata_size > 0) {
743 fe = current_fixup(a, archive_entry_pathname(entry));
745 return (ARCHIVE_FATAL);
746 fe->mac_metadata = malloc(metadata_size);
747 if (fe->mac_metadata != NULL) {
748 memcpy(fe->mac_metadata, metadata,
750 fe->mac_metadata_size = metadata_size;
751 fe->fixup |= TODO_MAC_METADATA;
756 if (a->deferred & TODO_FFLAGS) {
757 fe = current_fixup(a, archive_entry_pathname(entry));
759 return (ARCHIVE_FATAL);
760 fe->fixup |= TODO_FFLAGS;
761 /* TODO: Complete this.. defer fflags from below. */
764 /* We've created the object and are ready to pour data into it. */
765 if (ret >= ARCHIVE_WARN)
766 a->archive.state = ARCHIVE_STATE_DATA;
768 * If it's not open, tell our client not to try writing.
769 * In particular, dirs, links, etc, don't get written to.
772 archive_entry_set_size(entry, 0);
780 archive_write_disk_set_skip_file(struct archive *_a, int64_t d, int64_t i)
782 struct archive_write_disk *a = (struct archive_write_disk *)_a;
783 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
784 ARCHIVE_STATE_ANY, "archive_write_disk_set_skip_file");
785 a->skip_file_set = 1;
786 a->skip_file_dev = d;
787 a->skip_file_ino = i;
792 write_data_block(struct archive_write_disk *a, const char *buff, size_t size)
794 uint64_t start_size = size;
795 ssize_t bytes_written = 0;
796 ssize_t block_size = 0, bytes_to_write;
801 if (a->filesize == 0 || a->fd < 0) {
802 archive_set_error(&a->archive, 0,
803 "Attempt to write to an empty file");
804 return (ARCHIVE_WARN);
807 if (a->flags & ARCHIVE_EXTRACT_SPARSE) {
808 #if HAVE_STRUCT_STAT_ST_BLKSIZE
810 if ((r = lazy_stat(a)) != ARCHIVE_OK)
812 block_size = a->pst->st_blksize;
814 /* XXX TODO XXX Is there a more appropriate choice here ? */
815 /* This needn't match the filesystem allocation size. */
816 block_size = 16*1024;
820 /* If this write would run beyond the file size, truncate it. */
821 if (a->filesize >= 0 && (int64_t)(a->offset + size) > a->filesize)
822 start_size = size = (size_t)(a->filesize - a->offset);
824 /* Write the data. */
826 if (block_size == 0) {
827 bytes_to_write = size;
829 /* We're sparsifying the file. */
833 /* Skip leading zero bytes. */
834 for (p = buff, end = buff + size; p < end; ++p) {
838 a->offset += p - buff;
844 /* Calculate next block boundary after offset. */
846 = (a->offset / block_size + 1) * block_size;
848 /* If the adjusted write would cross block boundary,
849 * truncate it to the block boundary. */
850 bytes_to_write = size;
851 if (a->offset + bytes_to_write > block_end)
852 bytes_to_write = block_end - a->offset;
854 /* Seek if necessary to the specified offset. */
855 if (a->offset != a->fd_offset) {
856 if (lseek(a->fd, a->offset, SEEK_SET) < 0) {
857 archive_set_error(&a->archive, errno,
859 return (ARCHIVE_FATAL);
861 a->fd_offset = a->offset;
863 bytes_written = write(a->fd, buff, bytes_to_write);
864 if (bytes_written < 0) {
865 archive_set_error(&a->archive, errno, "Write failed");
866 return (ARCHIVE_WARN);
868 buff += bytes_written;
869 size -= bytes_written;
870 a->total_bytes_written += bytes_written;
871 a->offset += bytes_written;
872 a->fd_offset = a->offset;
874 return (start_size - size);
877 #if defined(__APPLE__) && defined(UF_COMPRESSED) && defined(HAVE_SYS_XATTR_H)\
878 && defined(HAVE_ZLIB_H)
881 * Set UF_COMPRESSED file flag.
882 * This have to be called after hfs_write_decmpfs() because if the
883 * file does not have "com.apple.decmpfs" xattr the flag is ignored.
886 hfs_set_compressed_fflag(struct archive_write_disk *a)
890 if ((r = lazy_stat(a)) != ARCHIVE_OK)
893 a->st.st_flags |= UF_COMPRESSED;
894 if (fchflags(a->fd, a->st.st_flags) != 0) {
895 archive_set_error(&a->archive, errno,
896 "Failed to set UF_COMPRESSED file flag");
897 return (ARCHIVE_WARN);
903 * HFS+ Compression decmpfs
905 * +------------------------------+ +0
906 * | Magic(LE 4 bytes) |
907 * +------------------------------+
908 * | Type(LE 4 bytes) |
909 * +------------------------------+
910 * | Uncompressed size(LE 8 bytes)|
911 * +------------------------------+ +16
913 * | Compressed data |
914 * | (Placed only if Type == 3) |
916 * +------------------------------+ +3802 = MAX_DECMPFS_XATTR_SIZE
918 * Type is 3: decmpfs has compressed data.
919 * Type is 4: Resource Fork has compressed data.
922 * Write "com.apple.decmpfs"
925 hfs_write_decmpfs(struct archive_write_disk *a)
928 uint32_t compression_type;
930 r = fsetxattr(a->fd, DECMPFS_XATTR_NAME, a->decmpfs_header_p,
931 a->decmpfs_attr_size, 0, 0);
933 archive_set_error(&a->archive, errno,
934 "Cannot restore xattr:%s", DECMPFS_XATTR_NAME);
935 compression_type = archive_le32dec(
936 &a->decmpfs_header_p[DECMPFS_COMPRESSION_TYPE]);
937 if (compression_type == CMP_RESOURCE_FORK)
938 fremovexattr(a->fd, XATTR_RESOURCEFORK_NAME,
939 XATTR_SHOWCOMPRESSION);
940 return (ARCHIVE_WARN);
946 * HFS+ Compression Resource Fork
948 * +-----------------------------+
949 * | Header(260 bytes) |
950 * +-----------------------------+
951 * | Block count(LE 4 bytes) |
952 * +-----------------------------+ --+
953 * +-- | Offset (LE 4 bytes) | |
954 * | | [distance from Block count] | | Block 0
955 * | +-----------------------------+ |
956 * | | Compressed size(LE 4 bytes) | |
957 * | +-----------------------------+ --+
959 * | | .................. |
961 * | +-----------------------------+ --+
962 * | | Offset (LE 4 bytes) | |
963 * | +-----------------------------+ | Block (Block count -1)
964 * | | Compressed size(LE 4 bytes) | |
965 * +-> +-----------------------------+ --+
966 * | Compressed data(n bytes) | Block 0
967 * +-----------------------------+
969 * | .................. |
971 * +-----------------------------+
972 * | Compressed data(n bytes) | Block (Block count -1)
973 * +-----------------------------+
974 * | Footer(50 bytes) |
975 * +-----------------------------+
979 * Write the header of "com.apple.ResourceFork"
982 hfs_write_resource_fork(struct archive_write_disk *a, unsigned char *buff,
983 size_t bytes, uint32_t position)
987 ret = fsetxattr(a->fd, XATTR_RESOURCEFORK_NAME, buff, bytes,
988 position, a->rsrc_xattr_options);
990 archive_set_error(&a->archive, errno,
991 "Cannot restore xattr: %s at %u pos %u bytes",
992 XATTR_RESOURCEFORK_NAME,
995 return (ARCHIVE_WARN);
997 a->rsrc_xattr_options &= ~XATTR_CREATE;
1002 hfs_write_compressed_data(struct archive_write_disk *a, size_t bytes_compressed)
1006 ret = hfs_write_resource_fork(a, a->compressed_buffer,
1007 bytes_compressed, a->compressed_rsrc_position);
1008 if (ret == ARCHIVE_OK)
1009 a->compressed_rsrc_position += bytes_compressed;
1014 hfs_write_resource_fork_header(struct archive_write_disk *a)
1016 unsigned char *buff;
1017 uint32_t rsrc_bytes;
1018 uint32_t rsrc_header_bytes;
1021 * Write resource fork header + block info.
1023 buff = a->resource_fork;
1024 rsrc_bytes = a->compressed_rsrc_position - RSRC_F_SIZE;
1026 RSRC_H_SIZE + /* Header base size. */
1027 4 + /* Block count. */
1028 (a->decmpfs_block_count * 8);/* Block info */
1029 archive_be32enc(buff, 0x100);
1030 archive_be32enc(buff + 4, rsrc_bytes);
1031 archive_be32enc(buff + 8, rsrc_bytes - 256);
1032 archive_be32enc(buff + 12, 0x32);
1033 memset(buff + 16, 0, 240);
1034 archive_be32enc(buff + 256, rsrc_bytes - 260);
1035 return hfs_write_resource_fork(a, buff, rsrc_header_bytes, 0);
1039 hfs_set_resource_fork_footer(unsigned char *buff, size_t buff_size)
1041 static const char rsrc_footer[RSRC_F_SIZE] = {
1042 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1043 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1044 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1045 0x00, 0x1c, 0x00, 0x32, 0x00, 0x00, 'c', 'm',
1046 'p', 'f', 0x00, 0x00, 0x00, 0x0a, 0x00, 0x01,
1047 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1050 if (buff_size < sizeof(rsrc_footer))
1052 memcpy(buff, rsrc_footer, sizeof(rsrc_footer));
1053 return (sizeof(rsrc_footer));
1057 hfs_reset_compressor(struct archive_write_disk *a)
1061 if (a->stream_valid)
1062 ret = deflateReset(&a->stream);
1064 ret = deflateInit(&a->stream, a->decmpfs_compression_level);
1067 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1068 "Failed to initialize compressor");
1069 return (ARCHIVE_FATAL);
1071 a->stream_valid = 1;
1073 return (ARCHIVE_OK);
1077 hfs_decompress(struct archive_write_disk *a)
1079 uint32_t *block_info;
1080 unsigned int block_count;
1081 uint32_t data_pos, data_size;
1083 ssize_t bytes_written, bytes_to_write;
1086 block_info = (uint32_t *)(a->resource_fork + RSRC_H_SIZE);
1087 block_count = archive_le32dec(block_info++);
1088 while (block_count--) {
1089 data_pos = RSRC_H_SIZE + archive_le32dec(block_info++);
1090 data_size = archive_le32dec(block_info++);
1091 r = fgetxattr(a->fd, XATTR_RESOURCEFORK_NAME,
1092 a->compressed_buffer, data_size, data_pos, 0);
1093 if (r != data_size) {
1094 archive_set_error(&a->archive,
1095 (r < 0)?errno:ARCHIVE_ERRNO_MISC,
1096 "Failed to read resource fork");
1097 return (ARCHIVE_WARN);
1099 if (a->compressed_buffer[0] == 0xff) {
1100 bytes_to_write = data_size -1;
1101 b = a->compressed_buffer + 1;
1103 uLong dest_len = MAX_DECMPFS_BLOCK_SIZE;
1106 zr = uncompress((Bytef *)a->uncompressed_buffer,
1107 &dest_len, a->compressed_buffer, data_size);
1109 archive_set_error(&a->archive,
1111 "Failed to decompress resource fork");
1112 return (ARCHIVE_WARN);
1114 bytes_to_write = dest_len;
1115 b = (unsigned char *)a->uncompressed_buffer;
1118 bytes_written = write(a->fd, b, bytes_to_write);
1119 if (bytes_written < 0) {
1120 archive_set_error(&a->archive, errno,
1122 return (ARCHIVE_WARN);
1124 bytes_to_write -= bytes_written;
1126 } while (bytes_to_write > 0);
1128 r = fremovexattr(a->fd, XATTR_RESOURCEFORK_NAME, 0);
1130 archive_set_error(&a->archive, errno,
1131 "Failed to remove resource fork");
1132 return (ARCHIVE_WARN);
1134 return (ARCHIVE_OK);
1138 hfs_drive_compressor(struct archive_write_disk *a, const char *buff,
1141 unsigned char *buffer_compressed;
1142 size_t bytes_compressed;
1146 ret = hfs_reset_compressor(a);
1147 if (ret != ARCHIVE_OK)
1150 if (a->compressed_buffer == NULL) {
1153 block_size = COMPRESSED_W_SIZE + RSRC_F_SIZE +
1154 + compressBound(MAX_DECMPFS_BLOCK_SIZE);
1155 a->compressed_buffer = malloc(block_size);
1156 if (a->compressed_buffer == NULL) {
1157 archive_set_error(&a->archive, ENOMEM,
1158 "Can't allocate memory for Resource Fork");
1159 return (ARCHIVE_FATAL);
1161 a->compressed_buffer_size = block_size;
1162 a->compressed_buffer_remaining = block_size;
1165 buffer_compressed = a->compressed_buffer +
1166 a->compressed_buffer_size - a->compressed_buffer_remaining;
1167 a->stream.next_in = (Bytef *)(uintptr_t)(const void *)buff;
1168 a->stream.avail_in = size;
1169 a->stream.next_out = buffer_compressed;
1170 a->stream.avail_out = a->compressed_buffer_remaining;
1172 ret = deflate(&a->stream, Z_FINISH);
1178 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1179 "Failed to compress data");
1180 return (ARCHIVE_FAILED);
1182 } while (ret == Z_OK);
1183 bytes_compressed = a->compressed_buffer_remaining - a->stream.avail_out;
1186 * If the compressed size is larger than the original size,
1187 * throw away compressed data, use uncompressed data instead.
1189 if (bytes_compressed > size) {
1190 buffer_compressed[0] = 0xFF;/* uncompressed marker. */
1191 memcpy(buffer_compressed + 1, buff, size);
1192 bytes_compressed = size + 1;
1194 a->compressed_buffer_remaining -= bytes_compressed;
1197 * If the compressed size is smaller than MAX_DECMPFS_XATTR_SIZE
1198 * and the block count in the file is only one, store compressed
1199 * data to decmpfs xattr instead of the resource fork.
1201 if (a->decmpfs_block_count == 1 &&
1202 (a->decmpfs_attr_size + bytes_compressed)
1203 <= MAX_DECMPFS_XATTR_SIZE) {
1204 archive_le32enc(&a->decmpfs_header_p[DECMPFS_COMPRESSION_TYPE],
1206 memcpy(a->decmpfs_header_p + DECMPFS_HEADER_SIZE,
1207 buffer_compressed, bytes_compressed);
1208 a->decmpfs_attr_size += bytes_compressed;
1209 a->compressed_buffer_remaining = a->compressed_buffer_size;
1211 * Finish HFS+ Compression.
1212 * - Write the decmpfs xattr.
1213 * - Set the UF_COMPRESSED file flag.
1215 ret = hfs_write_decmpfs(a);
1216 if (ret == ARCHIVE_OK)
1217 ret = hfs_set_compressed_fflag(a);
1221 /* Update block info. */
1222 archive_le32enc(a->decmpfs_block_info++,
1223 a->compressed_rsrc_position_v - RSRC_H_SIZE);
1224 archive_le32enc(a->decmpfs_block_info++, bytes_compressed);
1225 a->compressed_rsrc_position_v += bytes_compressed;
1228 * Write the compressed data to the resource fork.
1230 bytes_used = a->compressed_buffer_size - a->compressed_buffer_remaining;
1231 while (bytes_used >= COMPRESSED_W_SIZE) {
1232 ret = hfs_write_compressed_data(a, COMPRESSED_W_SIZE);
1233 if (ret != ARCHIVE_OK)
1235 bytes_used -= COMPRESSED_W_SIZE;
1236 if (bytes_used > COMPRESSED_W_SIZE)
1237 memmove(a->compressed_buffer,
1238 a->compressed_buffer + COMPRESSED_W_SIZE,
1241 memcpy(a->compressed_buffer,
1242 a->compressed_buffer + COMPRESSED_W_SIZE,
1245 a->compressed_buffer_remaining = a->compressed_buffer_size - bytes_used;
1248 * If the current block is the last block, write the remaining
1249 * compressed data and the resource fork footer.
1251 if (a->file_remaining_bytes == 0) {
1255 /* Append the resource footer. */
1256 rsrc_size = hfs_set_resource_fork_footer(
1257 a->compressed_buffer + bytes_used,
1258 a->compressed_buffer_remaining);
1259 ret = hfs_write_compressed_data(a, bytes_used + rsrc_size);
1260 a->compressed_buffer_remaining = a->compressed_buffer_size;
1262 /* If the compressed size is not enough smaller than
1263 * the uncompressed size. cancel HFS+ compression.
1264 * TODO: study a behavior of ditto utility and improve
1265 * the condition to fall back into no HFS+ compression. */
1266 bk = HFS_BLOCKS(a->compressed_rsrc_position);
1268 if (bk > HFS_BLOCKS(a->filesize))
1269 return hfs_decompress(a);
1271 * Write the resourcefork header.
1273 if (ret == ARCHIVE_OK)
1274 ret = hfs_write_resource_fork_header(a);
1276 * Finish HFS+ Compression.
1277 * - Write the decmpfs xattr.
1278 * - Set the UF_COMPRESSED file flag.
1280 if (ret == ARCHIVE_OK)
1281 ret = hfs_write_decmpfs(a);
1282 if (ret == ARCHIVE_OK)
1283 ret = hfs_set_compressed_fflag(a);
1289 hfs_write_decmpfs_block(struct archive_write_disk *a, const char *buff,
1292 const char *buffer_to_write;
1293 size_t bytes_to_write;
1296 if (a->decmpfs_block_count == (unsigned)-1) {
1299 unsigned int block_count;
1301 if (a->decmpfs_header_p == NULL) {
1302 new_block = malloc(MAX_DECMPFS_XATTR_SIZE
1303 + sizeof(uint32_t));
1304 if (new_block == NULL) {
1305 archive_set_error(&a->archive, ENOMEM,
1306 "Can't allocate memory for decmpfs");
1307 return (ARCHIVE_FATAL);
1309 a->decmpfs_header_p = new_block;
1311 a->decmpfs_attr_size = DECMPFS_HEADER_SIZE;
1312 archive_le32enc(&a->decmpfs_header_p[DECMPFS_COMPRESSION_MAGIC],
1314 archive_le32enc(&a->decmpfs_header_p[DECMPFS_COMPRESSION_TYPE],
1316 archive_le64enc(&a->decmpfs_header_p[DECMPFS_UNCOMPRESSED_SIZE],
1319 /* Calculate a block count of the file. */
1321 (a->filesize + MAX_DECMPFS_BLOCK_SIZE -1) /
1322 MAX_DECMPFS_BLOCK_SIZE;
1324 * Allocate buffer for resource fork.
1325 * Set up related pointers;
1328 RSRC_H_SIZE + /* header */
1329 4 + /* Block count */
1330 (block_count * sizeof(uint32_t) * 2) +
1331 RSRC_F_SIZE; /* footer */
1332 if (new_size > a->resource_fork_allocated_size) {
1333 new_block = realloc(a->resource_fork, new_size);
1334 if (new_block == NULL) {
1335 archive_set_error(&a->archive, ENOMEM,
1336 "Can't allocate memory for ResourceFork");
1337 return (ARCHIVE_FATAL);
1339 a->resource_fork_allocated_size = new_size;
1340 a->resource_fork = new_block;
1343 /* Allocate uncompressed buffer */
1344 if (a->uncompressed_buffer == NULL) {
1345 new_block = malloc(MAX_DECMPFS_BLOCK_SIZE);
1346 if (new_block == NULL) {
1347 archive_set_error(&a->archive, ENOMEM,
1348 "Can't allocate memory for decmpfs");
1349 return (ARCHIVE_FATAL);
1351 a->uncompressed_buffer = new_block;
1353 a->block_remaining_bytes = MAX_DECMPFS_BLOCK_SIZE;
1354 a->file_remaining_bytes = a->filesize;
1355 a->compressed_buffer_remaining = a->compressed_buffer_size;
1358 * Set up a resource fork.
1360 a->rsrc_xattr_options = XATTR_CREATE;
1361 /* Get the position where we are going to set a bunch
1363 a->decmpfs_block_info =
1364 (uint32_t *)(a->resource_fork + RSRC_H_SIZE);
1365 /* Set the block count to the resource fork. */
1366 archive_le32enc(a->decmpfs_block_info++, block_count);
1367 /* Get the position where we are going to set compressed
1369 a->compressed_rsrc_position =
1370 RSRC_H_SIZE + 4 + (block_count * 8);
1371 a->compressed_rsrc_position_v = a->compressed_rsrc_position;
1372 a->decmpfs_block_count = block_count;
1375 /* Ignore redundant bytes. */
1376 if (a->file_remaining_bytes == 0)
1377 return ((ssize_t)size);
1379 /* Do not overrun a block size. */
1380 if (size > a->block_remaining_bytes)
1381 bytes_to_write = a->block_remaining_bytes;
1383 bytes_to_write = size;
1384 /* Do not overrun the file size. */
1385 if (bytes_to_write > a->file_remaining_bytes)
1386 bytes_to_write = a->file_remaining_bytes;
1388 /* For efficiency, if a copy length is full of the uncompressed
1389 * buffer size, do not copy writing data to it. */
1390 if (bytes_to_write == MAX_DECMPFS_BLOCK_SIZE)
1391 buffer_to_write = buff;
1393 memcpy(a->uncompressed_buffer +
1394 MAX_DECMPFS_BLOCK_SIZE - a->block_remaining_bytes,
1395 buff, bytes_to_write);
1396 buffer_to_write = a->uncompressed_buffer;
1398 a->block_remaining_bytes -= bytes_to_write;
1399 a->file_remaining_bytes -= bytes_to_write;
1401 if (a->block_remaining_bytes == 0 || a->file_remaining_bytes == 0) {
1402 ret = hfs_drive_compressor(a, buffer_to_write,
1403 MAX_DECMPFS_BLOCK_SIZE - a->block_remaining_bytes);
1406 a->block_remaining_bytes = MAX_DECMPFS_BLOCK_SIZE;
1408 /* Ignore redundant bytes. */
1409 if (a->file_remaining_bytes == 0)
1410 return ((ssize_t)size);
1411 return (bytes_to_write);
1415 hfs_write_data_block(struct archive_write_disk *a, const char *buff,
1418 uint64_t start_size = size;
1419 ssize_t bytes_written = 0;
1420 ssize_t bytes_to_write;
1423 return (ARCHIVE_OK);
1425 if (a->filesize == 0 || a->fd < 0) {
1426 archive_set_error(&a->archive, 0,
1427 "Attempt to write to an empty file");
1428 return (ARCHIVE_WARN);
1431 /* If this write would run beyond the file size, truncate it. */
1432 if (a->filesize >= 0 && (int64_t)(a->offset + size) > a->filesize)
1433 start_size = size = (size_t)(a->filesize - a->offset);
1435 /* Write the data. */
1437 bytes_to_write = size;
1438 /* Seek if necessary to the specified offset. */
1439 if (a->offset < a->fd_offset) {
1440 /* Can't support backward move. */
1441 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1443 return (ARCHIVE_FATAL);
1444 } else if (a->offset > a->fd_offset) {
1445 int64_t skip = a->offset - a->fd_offset;
1446 char nullblock[1024];
1448 memset(nullblock, 0, sizeof(nullblock));
1450 if (skip > (int64_t)sizeof(nullblock))
1451 bytes_written = hfs_write_decmpfs_block(
1452 a, nullblock, sizeof(nullblock));
1454 bytes_written = hfs_write_decmpfs_block(
1455 a, nullblock, skip);
1456 if (bytes_written < 0) {
1457 archive_set_error(&a->archive, errno,
1459 return (ARCHIVE_WARN);
1461 skip -= bytes_written;
1464 a->fd_offset = a->offset;
1467 hfs_write_decmpfs_block(a, buff, bytes_to_write);
1468 if (bytes_written < 0)
1469 return (bytes_written);
1470 buff += bytes_written;
1471 size -= bytes_written;
1472 a->total_bytes_written += bytes_written;
1473 a->offset += bytes_written;
1474 a->fd_offset = a->offset;
1476 return (start_size - size);
1480 hfs_write_data_block(struct archive_write_disk *a, const char *buff,
1483 return (write_data_block(a, buff, size));
1488 _archive_write_disk_data_block(struct archive *_a,
1489 const void *buff, size_t size, int64_t offset)
1491 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1494 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1495 ARCHIVE_STATE_DATA, "archive_write_data_block");
1498 if (a->todo & TODO_HFS_COMPRESSION)
1499 r = hfs_write_data_block(a, buff, size);
1501 r = write_data_block(a, buff, size);
1504 if ((size_t)r < size) {
1505 archive_set_error(&a->archive, 0,
1506 "Too much data: Truncating file at %ju bytes",
1507 (uintmax_t)a->filesize);
1508 return (ARCHIVE_WARN);
1510 #if ARCHIVE_VERSION_NUMBER < 3999000
1511 return (ARCHIVE_OK);
1518 _archive_write_disk_data(struct archive *_a, const void *buff, size_t size)
1520 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1522 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1523 ARCHIVE_STATE_DATA, "archive_write_data");
1525 if (a->todo & TODO_HFS_COMPRESSION)
1526 return (hfs_write_data_block(a, buff, size));
1527 return (write_data_block(a, buff, size));
1531 _archive_write_disk_finish_entry(struct archive *_a)
1533 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1534 int ret = ARCHIVE_OK;
1536 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1537 ARCHIVE_STATE_HEADER | ARCHIVE_STATE_DATA,
1538 "archive_write_finish_entry");
1539 if (a->archive.state & ARCHIVE_STATE_HEADER)
1540 return (ARCHIVE_OK);
1541 archive_clear_error(&a->archive);
1543 /* Pad or truncate file to the right size. */
1545 /* There's no file. */
1546 } else if (a->filesize < 0) {
1547 /* File size is unknown, so we can't set the size. */
1548 } else if (a->fd_offset == a->filesize) {
1549 /* Last write ended at exactly the filesize; we're done. */
1550 /* Hopefully, this is the common case. */
1551 #if defined(__APPLE__) && defined(UF_COMPRESSED) && defined(HAVE_ZLIB_H)
1552 } else if (a->todo & TODO_HFS_COMPRESSION) {
1556 if (a->file_remaining_bytes)
1557 memset(null_d, 0, sizeof(null_d));
1558 while (a->file_remaining_bytes) {
1559 if (a->file_remaining_bytes > sizeof(null_d))
1560 r = hfs_write_data_block(
1561 a, null_d, sizeof(null_d));
1563 r = hfs_write_data_block(
1564 a, null_d, a->file_remaining_bytes);
1571 if (ftruncate(a->fd, a->filesize) == -1 &&
1573 archive_set_error(&a->archive, errno,
1574 "File size could not be restored");
1575 return (ARCHIVE_FAILED);
1579 * Not all platforms implement the XSI option to
1580 * extend files via ftruncate. Stat() the file again
1581 * to see what happened.
1584 if ((ret = lazy_stat(a)) != ARCHIVE_OK)
1586 /* We can use lseek()/write() to extend the file if
1587 * ftruncate didn't work or isn't available. */
1588 if (a->st.st_size < a->filesize) {
1589 const char nul = '\0';
1590 if (lseek(a->fd, a->filesize - 1, SEEK_SET) < 0) {
1591 archive_set_error(&a->archive, errno,
1593 return (ARCHIVE_FATAL);
1595 if (write(a->fd, &nul, 1) < 0) {
1596 archive_set_error(&a->archive, errno,
1597 "Write to restore size failed");
1598 return (ARCHIVE_FATAL);
1604 /* Restore metadata. */
1607 * This is specific to Mac OS X.
1608 * If the current file is an AppleDouble file, it should be
1609 * linked with the data fork file and remove it.
1611 if (a->todo & TODO_APPLEDOUBLE) {
1612 int r2 = fixup_appledouble(a, a->name);
1613 if (r2 == ARCHIVE_EOF) {
1614 /* The current file has been successfully linked
1615 * with the data fork file and removed. So there
1616 * is nothing to do on the current file. */
1617 goto finish_metadata;
1619 if (r2 < ret) ret = r2;
1623 * Look up the "real" UID only if we're going to need it.
1624 * TODO: the TODO_SGID condition can be dropped here, can't it?
1626 if (a->todo & (TODO_OWNER | TODO_SUID | TODO_SGID)) {
1627 a->uid = archive_write_disk_uid(&a->archive,
1628 archive_entry_uname(a->entry),
1629 archive_entry_uid(a->entry));
1631 /* Look up the "real" GID only if we're going to need it. */
1632 /* TODO: the TODO_SUID condition can be dropped here, can't it? */
1633 if (a->todo & (TODO_OWNER | TODO_SGID | TODO_SUID)) {
1634 a->gid = archive_write_disk_gid(&a->archive,
1635 archive_entry_gname(a->entry),
1636 archive_entry_gid(a->entry));
1640 * Restore ownership before set_mode tries to restore suid/sgid
1641 * bits. If we set the owner, we know what it is and can skip
1642 * a stat() call to examine the ownership of the file on disk.
1644 if (a->todo & TODO_OWNER) {
1645 int r2 = set_ownership(a);
1646 if (r2 < ret) ret = r2;
1650 * set_mode must precede ACLs on systems such as Solaris and
1651 * FreeBSD where setting the mode implicitly clears extended ACLs
1653 if (a->todo & TODO_MODE) {
1654 int r2 = set_mode(a, a->mode);
1655 if (r2 < ret) ret = r2;
1659 * Security-related extended attributes (such as
1660 * security.capability on Linux) have to be restored last,
1661 * since they're implicitly removed by other file changes.
1663 if (a->todo & TODO_XATTR) {
1664 int r2 = set_xattrs(a);
1665 if (r2 < ret) ret = r2;
1669 * Some flags prevent file modification; they must be restored after
1670 * file contents are written.
1672 if (a->todo & TODO_FFLAGS) {
1673 int r2 = set_fflags(a);
1674 if (r2 < ret) ret = r2;
1678 * Time must follow most other metadata;
1679 * otherwise atime will get changed.
1681 if (a->todo & TODO_TIMES) {
1682 int r2 = set_times_from_entry(a);
1683 if (r2 < ret) ret = r2;
1687 * Mac extended metadata includes ACLs.
1689 if (a->todo & TODO_MAC_METADATA) {
1690 const void *metadata;
1691 size_t metadata_size;
1692 metadata = archive_entry_mac_metadata(a->entry, &metadata_size);
1693 if (metadata != NULL && metadata_size > 0) {
1694 int r2 = set_mac_metadata(a, archive_entry_pathname(
1695 a->entry), metadata, metadata_size);
1696 if (r2 < ret) ret = r2;
1701 * ACLs must be restored after timestamps because there are
1702 * ACLs that prevent attribute changes (including time).
1704 if (a->todo & TODO_ACLS) {
1706 #ifdef HAVE_DARWIN_ACL
1708 * On Mac OS, platform ACLs are stored also in mac_metadata by
1709 * the operating system. If mac_metadata is present it takes
1710 * precedence and we skip extracting libarchive NFSv4 ACLs
1712 const void *metadata;
1713 size_t metadata_size;
1714 metadata = archive_entry_mac_metadata(a->entry, &metadata_size);
1715 if ((a->todo & TODO_MAC_METADATA) == 0 ||
1716 metadata == NULL || metadata_size == 0) {
1718 r2 = archive_write_disk_set_acls(&a->archive, a->fd,
1719 archive_entry_pathname(a->entry),
1720 archive_entry_acl(a->entry));
1721 if (r2 < ret) ret = r2;
1722 #ifdef HAVE_DARWIN_ACL
1728 /* If there's an fd, we can close it now. */
1733 /* If there's an entry, we can release it now. */
1735 archive_entry_free(a->entry);
1738 a->archive.state = ARCHIVE_STATE_HEADER;
1743 archive_write_disk_set_group_lookup(struct archive *_a,
1745 int64_t (*lookup_gid)(void *private, const char *gname, int64_t gid),
1746 void (*cleanup_gid)(void *private))
1748 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1749 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1750 ARCHIVE_STATE_ANY, "archive_write_disk_set_group_lookup");
1752 if (a->cleanup_gid != NULL && a->lookup_gid_data != NULL)
1753 (a->cleanup_gid)(a->lookup_gid_data);
1755 a->lookup_gid = lookup_gid;
1756 a->cleanup_gid = cleanup_gid;
1757 a->lookup_gid_data = private_data;
1758 return (ARCHIVE_OK);
1762 archive_write_disk_set_user_lookup(struct archive *_a,
1764 int64_t (*lookup_uid)(void *private, const char *uname, int64_t uid),
1765 void (*cleanup_uid)(void *private))
1767 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1768 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1769 ARCHIVE_STATE_ANY, "archive_write_disk_set_user_lookup");
1771 if (a->cleanup_uid != NULL && a->lookup_uid_data != NULL)
1772 (a->cleanup_uid)(a->lookup_uid_data);
1774 a->lookup_uid = lookup_uid;
1775 a->cleanup_uid = cleanup_uid;
1776 a->lookup_uid_data = private_data;
1777 return (ARCHIVE_OK);
1781 archive_write_disk_gid(struct archive *_a, const char *name, int64_t id)
1783 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1784 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1785 ARCHIVE_STATE_ANY, "archive_write_disk_gid");
1787 return (a->lookup_gid)(a->lookup_gid_data, name, id);
1792 archive_write_disk_uid(struct archive *_a, const char *name, int64_t id)
1794 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1795 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1796 ARCHIVE_STATE_ANY, "archive_write_disk_uid");
1798 return (a->lookup_uid)(a->lookup_uid_data, name, id);
1803 * Create a new archive_write_disk object and initialize it with global state.
1806 archive_write_disk_new(void)
1808 struct archive_write_disk *a;
1810 a = (struct archive_write_disk *)calloc(1, sizeof(*a));
1813 a->archive.magic = ARCHIVE_WRITE_DISK_MAGIC;
1814 /* We're ready to write a header immediately. */
1815 a->archive.state = ARCHIVE_STATE_HEADER;
1816 a->archive.vtable = archive_write_disk_vtable();
1817 a->start_time = time(NULL);
1818 /* Query and restore the umask. */
1819 umask(a->user_umask = umask(0));
1821 a->user_uid = geteuid();
1822 #endif /* HAVE_GETEUID */
1823 if (archive_string_ensure(&a->path_safe, 512) == NULL) {
1828 a->decmpfs_compression_level = 5;
1830 return (&a->archive);
1835 * If pathname is longer than PATH_MAX, chdir to a suitable
1836 * intermediate dir and edit the path down to a shorter suffix. Note
1837 * that this routine never returns an error; if the chdir() attempt
1838 * fails for any reason, we just go ahead with the long pathname. The
1839 * object creation is likely to fail, but any error will get handled
1842 #if defined(HAVE_FCHDIR) && defined(PATH_MAX)
1844 edit_deep_directories(struct archive_write_disk *a)
1847 char *tail = a->name;
1849 /* If path is short, avoid the open() below. */
1850 if (strlen(tail) < PATH_MAX)
1853 /* Try to record our starting dir. */
1854 a->restore_pwd = open(".", O_RDONLY | O_BINARY | O_CLOEXEC);
1855 __archive_ensure_cloexec_flag(a->restore_pwd);
1856 if (a->restore_pwd < 0)
1859 /* As long as the path is too long... */
1860 while (strlen(tail) >= PATH_MAX) {
1861 /* Locate a dir prefix shorter than PATH_MAX. */
1862 tail += PATH_MAX - 8;
1863 while (tail > a->name && *tail != '/')
1865 /* Exit if we find a too-long path component. */
1866 if (tail <= a->name)
1868 /* Create the intermediate dir and chdir to it. */
1869 *tail = '\0'; /* Terminate dir portion */
1870 ret = create_dir(a, a->name);
1871 if (ret == ARCHIVE_OK && chdir(a->name) != 0)
1872 ret = ARCHIVE_FAILED;
1873 *tail = '/'; /* Restore the / we removed. */
1874 if (ret != ARCHIVE_OK)
1877 /* The chdir() succeeded; we've now shortened the path. */
1885 * The main restore function.
1888 restore_entry(struct archive_write_disk *a)
1890 int ret = ARCHIVE_OK, en;
1892 if (a->flags & ARCHIVE_EXTRACT_UNLINK && !S_ISDIR(a->mode)) {
1894 * TODO: Fix this. Apparently, there are platforms
1895 * that still allow root to hose the entire filesystem
1896 * by unlinking a dir. The S_ISDIR() test above
1897 * prevents us from using unlink() here if the new
1898 * object is a dir, but that doesn't mean the old
1899 * object isn't a dir.
1901 if (a->flags & ARCHIVE_EXTRACT_CLEAR_NOCHANGE_FFLAGS)
1902 (void)clear_nochange_fflags(a);
1903 if (unlink(a->name) == 0) {
1904 /* We removed it, reset cached stat. */
1906 } else if (errno == ENOENT) {
1907 /* File didn't exist, that's just as good. */
1908 } else if (rmdir(a->name) == 0) {
1909 /* It was a dir, but now it's gone. */
1912 /* We tried, but couldn't get rid of it. */
1913 archive_set_error(&a->archive, errno,
1914 "Could not unlink");
1915 return(ARCHIVE_FAILED);
1919 /* Try creating it first; if this fails, we'll try to recover. */
1920 en = create_filesystem_object(a);
1922 if ((en == ENOTDIR || en == ENOENT)
1923 && !(a->flags & ARCHIVE_EXTRACT_NO_AUTODIR)) {
1924 /* If the parent dir doesn't exist, try creating it. */
1925 create_parent_dir(a, a->name);
1926 /* Now try to create the object again. */
1927 en = create_filesystem_object(a);
1930 if ((en == ENOENT) && (archive_entry_hardlink(a->entry) != NULL)) {
1931 archive_set_error(&a->archive, en,
1932 "Hard-link target '%s' does not exist.",
1933 archive_entry_hardlink(a->entry));
1934 return (ARCHIVE_FAILED);
1937 if ((en == EISDIR || en == EEXIST)
1938 && (a->flags & ARCHIVE_EXTRACT_NO_OVERWRITE)) {
1939 /* If we're not overwriting, we're done. */
1940 archive_entry_unset_size(a->entry);
1941 return (ARCHIVE_OK);
1945 * Some platforms return EISDIR if you call
1946 * open(O_WRONLY | O_EXCL | O_CREAT) on a directory, some
1947 * return EEXIST. POSIX is ambiguous, requiring EISDIR
1948 * for open(O_WRONLY) on a dir and EEXIST for open(O_EXCL | O_CREAT)
1949 * on an existing item.
1952 /* A dir is in the way of a non-dir, rmdir it. */
1953 if (rmdir(a->name) != 0) {
1954 archive_set_error(&a->archive, errno,
1955 "Can't remove already-existing dir");
1956 return (ARCHIVE_FAILED);
1960 en = create_filesystem_object(a);
1961 } else if (en == EEXIST) {
1963 * We know something is in the way, but we don't know what;
1964 * we need to find out before we go any further.
1968 * The SECURE_SYMLINKS logic has already removed a
1969 * symlink to a dir if the client wants that. So
1970 * follow the symlink if we're creating a dir.
1972 if (S_ISDIR(a->mode))
1973 r = stat(a->name, &a->st);
1975 * If it's not a dir (or it's a broken symlink),
1976 * then don't follow it.
1978 if (r != 0 || !S_ISDIR(a->mode))
1979 r = lstat(a->name, &a->st);
1981 archive_set_error(&a->archive, errno,
1982 "Can't stat existing object");
1983 return (ARCHIVE_FAILED);
1987 * NO_OVERWRITE_NEWER doesn't apply to directories.
1989 if ((a->flags & ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER)
1990 && !S_ISDIR(a->st.st_mode)) {
1991 if (!older(&(a->st), a->entry)) {
1992 archive_entry_unset_size(a->entry);
1993 return (ARCHIVE_OK);
1997 /* If it's our archive, we're done. */
1998 if (a->skip_file_set &&
1999 a->st.st_dev == (dev_t)a->skip_file_dev &&
2000 a->st.st_ino == (ino_t)a->skip_file_ino) {
2001 archive_set_error(&a->archive, 0,
2002 "Refusing to overwrite archive");
2003 return (ARCHIVE_FAILED);
2006 if (!S_ISDIR(a->st.st_mode)) {
2007 /* A non-dir is in the way, unlink it. */
2008 if (a->flags & ARCHIVE_EXTRACT_CLEAR_NOCHANGE_FFLAGS)
2009 (void)clear_nochange_fflags(a);
2010 if (unlink(a->name) != 0) {
2011 archive_set_error(&a->archive, errno,
2012 "Can't unlink already-existing object");
2013 return (ARCHIVE_FAILED);
2017 en = create_filesystem_object(a);
2018 } else if (!S_ISDIR(a->mode)) {
2019 /* A dir is in the way of a non-dir, rmdir it. */
2020 if (a->flags & ARCHIVE_EXTRACT_CLEAR_NOCHANGE_FFLAGS)
2021 (void)clear_nochange_fflags(a);
2022 if (rmdir(a->name) != 0) {
2023 archive_set_error(&a->archive, errno,
2024 "Can't replace existing directory with non-directory");
2025 return (ARCHIVE_FAILED);
2028 en = create_filesystem_object(a);
2031 * There's a dir in the way of a dir. Don't
2032 * waste time with rmdir()/mkdir(), just fix
2033 * up the permissions on the existing dir.
2034 * Note that we don't change perms on existing
2035 * dirs unless _EXTRACT_PERM is specified.
2037 if ((a->mode != a->st.st_mode)
2038 && (a->todo & TODO_MODE_FORCE))
2039 a->deferred |= (a->todo & TODO_MODE);
2040 /* Ownership doesn't need deferred fixup. */
2041 en = 0; /* Forget the EEXIST. */
2046 /* Everything failed; give up here. */
2047 if ((&a->archive)->error == NULL)
2048 archive_set_error(&a->archive, en, "Can't create '%s'",
2050 return (ARCHIVE_FAILED);
2053 a->pst = NULL; /* Cached stat data no longer valid. */
2058 * Returns 0 if creation succeeds, or else returns errno value from
2059 * the failed system call. Note: This function should only ever perform
2060 * a single system call.
2063 create_filesystem_object(struct archive_write_disk *a)
2065 /* Create the entry. */
2066 const char *linkname;
2067 mode_t final_mode, mode;
2069 /* these for check_symlinks_fsobj */
2070 char *linkname_copy; /* non-const copy of linkname */
2072 struct archive_string error_string;
2075 /* We identify hard/symlinks according to the link names. */
2076 /* Since link(2) and symlink(2) don't handle modes, we're done here. */
2077 linkname = archive_entry_hardlink(a->entry);
2078 if (linkname != NULL) {
2082 archive_string_init(&error_string);
2083 linkname_copy = strdup(linkname);
2084 if (linkname_copy == NULL) {
2088 * TODO: consider using the cleaned-up path as the link
2091 r = cleanup_pathname_fsobj(linkname_copy, &error_number,
2092 &error_string, a->flags);
2093 if (r != ARCHIVE_OK) {
2094 archive_set_error(&a->archive, error_number, "%s",
2096 free(linkname_copy);
2097 archive_string_free(&error_string);
2099 * EPERM is more appropriate than error_number for our
2104 r = check_symlinks_fsobj(linkname_copy, &error_number,
2105 &error_string, a->flags);
2106 if (r != ARCHIVE_OK) {
2107 archive_set_error(&a->archive, error_number, "%s",
2109 free(linkname_copy);
2110 archive_string_free(&error_string);
2112 * EPERM is more appropriate than error_number for our
2117 free(linkname_copy);
2118 archive_string_free(&error_string);
2119 r = link(linkname, a->name) ? errno : 0;
2121 * New cpio and pax formats allow hardlink entries
2122 * to carry data, so we may have to open the file
2123 * for hardlink entries.
2125 * If the hardlink was successfully created and
2126 * the archive doesn't have carry data for it,
2127 * consider it to be non-authoritative for meta data.
2128 * This is consistent with GNU tar and BSD pax.
2129 * If the hardlink does carry data, let the last
2130 * archive entry decide ownership.
2132 if (r == 0 && a->filesize <= 0) {
2135 } else if (r == 0 && a->filesize > 0) {
2137 r = lstat(a->name, &st);
2139 r = stat(a->name, &st);
2143 else if ((st.st_mode & AE_IFMT) == AE_IFREG) {
2144 a->fd = open(a->name, O_WRONLY | O_TRUNC |
2145 O_BINARY | O_CLOEXEC | O_NOFOLLOW);
2146 __archive_ensure_cloexec_flag(a->fd);
2154 linkname = archive_entry_symlink(a->entry);
2155 if (linkname != NULL) {
2157 return symlink(linkname, a->name) ? errno : 0;
2164 * The remaining system calls all set permissions, so let's
2165 * try to take advantage of that to avoid an extra chmod()
2166 * call. (Recall that umask is set to zero right now!)
2169 /* Mode we want for the final restored object (w/o file type bits). */
2170 final_mode = a->mode & 07777;
2172 * The mode that will actually be restored in this step. Note
2173 * that SUID, SGID, etc, require additional work to ensure
2174 * security, so we never restore them at this point.
2176 mode = final_mode & 0777 & ~a->user_umask;
2178 switch (a->mode & AE_IFMT) {
2180 /* POSIX requires that we fall through here. */
2183 a->fd = open(a->name,
2184 O_WRONLY | O_CREAT | O_EXCL | O_BINARY | O_CLOEXEC, mode);
2185 __archive_ensure_cloexec_flag(a->fd);
2190 /* Note: we use AE_IFCHR for the case label, and
2191 * S_IFCHR for the mknod() call. This is correct. */
2192 r = mknod(a->name, mode | S_IFCHR,
2193 archive_entry_rdev(a->entry));
2196 /* TODO: Find a better way to warn about our inability
2197 * to restore a char device node. */
2199 #endif /* HAVE_MKNOD */
2202 r = mknod(a->name, mode | S_IFBLK,
2203 archive_entry_rdev(a->entry));
2206 /* TODO: Find a better way to warn about our inability
2207 * to restore a block device node. */
2209 #endif /* HAVE_MKNOD */
2211 mode = (mode | MINIMUM_DIR_MODE) & MAXIMUM_DIR_MODE;
2212 r = mkdir(a->name, mode);
2214 /* Defer setting dir times. */
2215 a->deferred |= (a->todo & TODO_TIMES);
2216 a->todo &= ~TODO_TIMES;
2217 /* Never use an immediate chmod(). */
2218 /* We can't avoid the chmod() entirely if EXTRACT_PERM
2219 * because of SysV SGID inheritance. */
2220 if ((mode != final_mode)
2221 || (a->flags & ARCHIVE_EXTRACT_PERM))
2222 a->deferred |= (a->todo & TODO_MODE);
2223 a->todo &= ~TODO_MODE;
2228 r = mkfifo(a->name, mode);
2231 /* TODO: Find a better way to warn about our inability
2232 * to restore a fifo. */
2234 #endif /* HAVE_MKFIFO */
2237 /* All the system calls above set errno on failure. */
2241 /* If we managed to set the final mode, we've avoided a chmod(). */
2242 if (mode == final_mode)
2243 a->todo &= ~TODO_MODE;
2248 * Cleanup function for archive_extract. Mostly, this involves processing
2249 * the fixup list, which is used to address a number of problems:
2250 * * Dir permissions might prevent us from restoring a file in that
2251 * dir, so we restore the dir with minimum 0700 permissions first,
2252 * then correct the mode at the end.
2253 * * Similarly, the act of restoring a file touches the directory
2254 * and changes the timestamp on the dir, so we have to touch-up dir
2255 * timestamps at the end as well.
2256 * * Some file flags can interfere with the restore by, for example,
2257 * preventing the creation of hardlinks to those files.
2258 * * Mac OS extended metadata includes ACLs, so must be deferred on dirs.
2260 * Note that tar/cpio do not require that archives be in a particular
2261 * order; there is no way to know when the last file has been restored
2262 * within a directory, so there's no way to optimize the memory usage
2263 * here by fixing up the directory any earlier than the
2266 * XXX TODO: Directory ACLs should be restored here, for the same
2267 * reason we set directory perms here. XXX
2270 _archive_write_disk_close(struct archive *_a)
2272 struct archive_write_disk *a = (struct archive_write_disk *)_a;
2273 struct fixup_entry *next, *p;
2276 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
2277 ARCHIVE_STATE_HEADER | ARCHIVE_STATE_DATA,
2278 "archive_write_disk_close");
2279 ret = _archive_write_disk_finish_entry(&a->archive);
2281 /* Sort dir list so directories are fixed up in depth-first order. */
2282 p = sort_dir_list(a->fixup_list);
2285 a->pst = NULL; /* Mark stat cache as out-of-date. */
2286 if (p->fixup & TODO_TIMES) {
2287 set_times(a, -1, p->mode, p->name,
2288 p->atime, p->atime_nanos,
2289 p->birthtime, p->birthtime_nanos,
2290 p->mtime, p->mtime_nanos,
2291 p->ctime, p->ctime_nanos);
2293 if (p->fixup & TODO_MODE_BASE)
2294 chmod(p->name, p->mode);
2295 if (p->fixup & TODO_ACLS)
2296 #ifdef HAVE_DARWIN_ACL
2297 if ((p->fixup & TODO_MAC_METADATA) == 0 ||
2298 p->mac_metadata == NULL ||
2299 p->mac_metadata_size == 0)
2301 archive_write_disk_set_acls(&a->archive,
2302 -1, p->name, &p->acl);
2303 if (p->fixup & TODO_FFLAGS)
2304 set_fflags_platform(a, -1, p->name,
2305 p->mode, p->fflags_set, 0);
2306 if (p->fixup & TODO_MAC_METADATA)
2307 set_mac_metadata(a, p->name, p->mac_metadata,
2308 p->mac_metadata_size);
2310 archive_acl_clear(&p->acl);
2311 free(p->mac_metadata);
2316 a->fixup_list = NULL;
2321 _archive_write_disk_free(struct archive *_a)
2323 struct archive_write_disk *a;
2326 return (ARCHIVE_OK);
2327 archive_check_magic(_a, ARCHIVE_WRITE_DISK_MAGIC,
2328 ARCHIVE_STATE_ANY | ARCHIVE_STATE_FATAL, "archive_write_disk_free");
2329 a = (struct archive_write_disk *)_a;
2330 ret = _archive_write_disk_close(&a->archive);
2331 archive_write_disk_set_group_lookup(&a->archive, NULL, NULL, NULL);
2332 archive_write_disk_set_user_lookup(&a->archive, NULL, NULL, NULL);
2334 archive_entry_free(a->entry);
2335 archive_string_free(&a->_name_data);
2336 archive_string_free(&a->archive.error_string);
2337 archive_string_free(&a->path_safe);
2338 a->archive.magic = 0;
2339 __archive_clean(&a->archive);
2340 free(a->decmpfs_header_p);
2341 free(a->resource_fork);
2342 free(a->compressed_buffer);
2343 free(a->uncompressed_buffer);
2344 #if defined(__APPLE__) && defined(UF_COMPRESSED) && defined(HAVE_SYS_XATTR_H)\
2345 && defined(HAVE_ZLIB_H)
2346 if (a->stream_valid) {
2347 switch (deflateEnd(&a->stream)) {
2351 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
2352 "Failed to clean up compressor");
2353 ret = ARCHIVE_FATAL;
2363 * Simple O(n log n) merge sort to order the fixup list. In
2364 * particular, we want to restore dir timestamps depth-first.
2366 static struct fixup_entry *
2367 sort_dir_list(struct fixup_entry *p)
2369 struct fixup_entry *a, *b, *t;
2373 /* A one-item list is already sorted. */
2374 if (p->next == NULL)
2377 /* Step 1: split the list. */
2381 /* Step a twice, t once. */
2387 /* Now, t is at the mid-point, so break the list here. */
2392 /* Step 2: Recursively sort the two sub-lists. */
2393 a = sort_dir_list(a);
2394 b = sort_dir_list(b);
2396 /* Step 3: Merge the returned lists. */
2397 /* Pick the first element for the merged list. */
2398 if (strcmp(a->name, b->name) > 0) {
2406 /* Always put the later element on the list first. */
2407 while (a != NULL && b != NULL) {
2408 if (strcmp(a->name, b->name) > 0) {
2418 /* Only one list is non-empty, so just splice it on. */
2428 * Returns a new, initialized fixup entry.
2430 * TODO: Reduce the memory requirements for this list by using a tree
2431 * structure rather than a simple list of names.
2433 static struct fixup_entry *
2434 new_fixup(struct archive_write_disk *a, const char *pathname)
2436 struct fixup_entry *fe;
2438 fe = (struct fixup_entry *)calloc(1, sizeof(struct fixup_entry));
2440 archive_set_error(&a->archive, ENOMEM,
2441 "Can't allocate memory for a fixup");
2444 fe->next = a->fixup_list;
2447 fe->name = strdup(pathname);
2452 * Returns a fixup structure for the current entry.
2454 static struct fixup_entry *
2455 current_fixup(struct archive_write_disk *a, const char *pathname)
2457 if (a->current_fixup == NULL)
2458 a->current_fixup = new_fixup(a, pathname);
2459 return (a->current_fixup);
2462 /* Error helper for new *_fsobj functions */
2464 fsobj_error(int *a_eno, struct archive_string *a_estr,
2465 int err, const char *errstr, const char *path)
2470 archive_string_sprintf(a_estr, "%s%s", errstr, path);
2474 * TODO: Someday, integrate this with the deep dir support; they both
2475 * scan the path and both can be optimized by comparing against other
2478 /* TODO: Extend this to support symlinks on Windows Vista and later. */
2481 * Checks the given path to see if any elements along it are symlinks. Returns
2482 * ARCHIVE_OK if there are none, otherwise puts an error in errmsg.
2485 check_symlinks_fsobj(char *path, int *a_eno, struct archive_string *a_estr,
2488 #if !defined(HAVE_LSTAT)
2489 /* Platform doesn't have lstat, so we can't look for symlinks. */
2490 (void)path; /* UNUSED */
2491 (void)error_number; /* UNUSED */
2492 (void)error_string; /* UNUSED */
2493 (void)flags; /* UNUSED */
2494 return (ARCHIVE_OK);
2496 int res = ARCHIVE_OK;
2505 /* Nothing to do here if name is empty */
2507 return (ARCHIVE_OK);
2510 * Guard against symlink tricks. Reject any archive entry whose
2511 * destination would be altered by a symlink.
2513 * Walk the filename in chunks separated by '/'. For each segment:
2514 * - if it doesn't exist, continue
2515 * - if it's symlink, abort or remove it
2516 * - if it's a directory and it's not the last chunk, cd into it
2518 * head points to the current (relative) path
2519 * tail points to the temporary \0 terminating the segment we're
2520 * currently examining
2521 * c holds what used to be in *tail
2522 * last is 1 if this is the last tail
2524 restore_pwd = open(".", O_RDONLY | O_BINARY | O_CLOEXEC);
2525 __archive_ensure_cloexec_flag(restore_pwd);
2526 if (restore_pwd < 0)
2527 return (ARCHIVE_FATAL);
2531 /* TODO: reintroduce a safe cache here? */
2532 /* Skip the root directory if the path is absolute. */
2533 if(tail == path && tail[0] == '/')
2535 /* Keep going until we've checked the entire name.
2536 * head, tail, path all alias the same string, which is
2537 * temporarily zeroed at tail, so be careful restoring the
2538 * stashed (c=tail[0]) for error messages.
2539 * Exiting the loop with break is okay; continue is not.
2543 * Skip the separator we just consumed, plus any adjacent ones
2545 while (*tail == '/')
2547 /* Skip the next path element. */
2548 while (*tail != '\0' && *tail != '/')
2550 /* is this the last path component? */
2551 last = (tail[0] == '\0') || (tail[0] == '/' && tail[1] == '\0');
2552 /* temporarily truncate the string here */
2555 /* Check that we haven't hit a symlink. */
2556 r = lstat(head, &st);
2559 /* We've hit a dir that doesn't exist; stop now. */
2560 if (errno == ENOENT) {
2564 * Treat any other error as fatal - best to be
2566 * Note: This effectively disables deep
2567 * directory support when security checks are
2568 * enabled. Otherwise, very long pathnames that
2569 * trigger an error here could evade the
2571 * TODO: We could do better, but it would
2572 * probably require merging the symlink checks
2573 * with the deep-directory editing.
2575 fsobj_error(a_eno, a_estr, errno,
2576 "Could not stat ", path);
2577 res = ARCHIVE_FAILED;
2580 } else if (S_ISDIR(st.st_mode)) {
2582 if (chdir(head) != 0) {
2584 fsobj_error(a_eno, a_estr, errno,
2585 "Could not chdir ", path);
2586 res = (ARCHIVE_FATAL);
2589 /* Our view is now from inside this dir: */
2592 } else if (S_ISLNK(st.st_mode)) {
2595 * Last element is symlink; remove it
2596 * so we can overwrite it with the
2597 * item being extracted.
2601 fsobj_error(a_eno, a_estr, errno,
2602 "Could not remove symlink ",
2604 res = ARCHIVE_FAILED;
2608 * Even if we did remove it, a warning
2609 * is in order. The warning is silly,
2610 * though, if we're just replacing one
2611 * symlink with another symlink.
2615 * FIXME: not sure how important this is to
2619 if (!S_ISLNK(path)) {
2620 fsobj_error(a_eno, a_estr, 0,
2621 "Removing symlink ", path);
2624 /* Symlink gone. No more problem! */
2627 } else if (flags & ARCHIVE_EXTRACT_UNLINK) {
2628 /* User asked us to remove problems. */
2629 if (unlink(head) != 0) {
2631 fsobj_error(a_eno, a_estr, 0,
2632 "Cannot remove intervening "
2634 res = ARCHIVE_FAILED;
2639 ARCHIVE_EXTRACT_SECURE_SYMLINKS) == 0) {
2641 * We are not the last element and we want to
2642 * follow symlinks if they are a directory.
2644 * This is needed to extract hardlinks over
2647 r = stat(head, &st);
2650 if (errno == ENOENT) {
2653 fsobj_error(a_eno, a_estr,
2655 "Could not stat ", path);
2656 res = (ARCHIVE_FAILED);
2659 } else if (S_ISDIR(st.st_mode)) {
2660 if (chdir(head) != 0) {
2662 fsobj_error(a_eno, a_estr,
2664 "Could not chdir ", path);
2665 res = (ARCHIVE_FATAL);
2669 * Our view is now from inside
2675 fsobj_error(a_eno, a_estr, 0,
2676 "Cannot extract through "
2678 res = ARCHIVE_FAILED;
2683 fsobj_error(a_eno, a_estr, 0,
2684 "Cannot extract through symlink ", path);
2685 res = ARCHIVE_FAILED;
2689 /* be sure to always maintain this */
2691 if (tail[0] != '\0')
2692 tail++; /* Advance to the next segment. */
2694 /* Catches loop exits via break */
2697 /* If we changed directory above, restore it here. */
2698 if (restore_pwd >= 0) {
2699 r = fchdir(restore_pwd);
2701 fsobj_error(a_eno, a_estr, errno,
2702 "chdir() failure", "");
2707 res = (ARCHIVE_FATAL);
2711 /* TODO: reintroduce a safe cache here? */
2717 * Check a->name for symlinks, returning ARCHIVE_OK if its clean, otherwise
2718 * calls archive_set_error and returns ARCHIVE_{FATAL,FAILED}
2721 check_symlinks(struct archive_write_disk *a)
2723 struct archive_string error_string;
2726 archive_string_init(&error_string);
2727 rc = check_symlinks_fsobj(a->name, &error_number, &error_string,
2729 if (rc != ARCHIVE_OK) {
2730 archive_set_error(&a->archive, error_number, "%s",
2733 archive_string_free(&error_string);
2734 a->pst = NULL; /* to be safe */
2739 #if defined(__CYGWIN__)
2741 * 1. Convert a path separator from '\' to '/' .
2742 * We shouldn't check multibyte character directly because some
2743 * character-set have been using the '\' character for a part of
2744 * its multibyte character code.
2745 * 2. Replace unusable characters in Windows with underscore('_').
2746 * See also : http://msdn.microsoft.com/en-us/library/aa365247.aspx
2749 cleanup_pathname_win(char *path)
2754 int mb, complete, utf8;
2759 utf8 = (strcmp(nl_langinfo(CODESET), "UTF-8") == 0)? 1: 0;
2760 for (p = path; *p != '\0'; p++) {
2763 /* If previous byte is smaller than 128,
2764 * this is not second byte of multibyte characters,
2765 * so we can replace '\' with '/'. */
2769 complete = 0;/* uncompleted. */
2770 } else if (*(unsigned char *)p > 127)
2774 /* Rewrite the path name if its next character is unusable. */
2775 if (*p == ':' || *p == '*' || *p == '?' || *p == '"' ||
2776 *p == '<' || *p == '>' || *p == '|')
2783 * Convert path separator in wide-character.
2786 while (*p != '\0' && alen) {
2787 l = mbtowc(&wc, p, alen);
2788 if (l == (size_t)-1) {
2789 while (*p != '\0') {
2796 if (l == 1 && wc == L'\\')
2805 * Canonicalize the pathname. In particular, this strips duplicate
2806 * '/' characters, '.' elements, and trailing '/'. It also raises an
2807 * error for an empty path, a trailing '..', (if _SECURE_NODOTDOT is
2808 * set) any '..' in the path or (if ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS
2809 * is set) if the path is absolute.
2812 cleanup_pathname_fsobj(char *path, int *a_eno, struct archive_string *a_estr,
2816 char separator = '\0';
2820 fsobj_error(a_eno, a_estr, ARCHIVE_ERRNO_MISC,
2821 "Invalid empty ", "pathname");
2822 return (ARCHIVE_FAILED);
2825 #if defined(__CYGWIN__)
2826 cleanup_pathname_win(path);
2828 /* Skip leading '/'. */
2830 if (flags & ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS) {
2831 fsobj_error(a_eno, a_estr, ARCHIVE_ERRNO_MISC,
2832 "Path is ", "absolute");
2833 return (ARCHIVE_FAILED);
2839 /* Scan the pathname one element at a time. */
2841 /* src points to first char after '/' */
2842 if (src[0] == '\0') {
2844 } else if (src[0] == '/') {
2845 /* Found '//', ignore second one. */
2848 } else if (src[0] == '.') {
2849 if (src[1] == '\0') {
2850 /* Ignore trailing '.' */
2852 } else if (src[1] == '/') {
2856 } else if (src[1] == '.') {
2857 if (src[2] == '/' || src[2] == '\0') {
2858 /* Conditionally warn about '..' */
2860 & ARCHIVE_EXTRACT_SECURE_NODOTDOT) {
2861 fsobj_error(a_eno, a_estr,
2863 "Path contains ", "'..'");
2864 return (ARCHIVE_FAILED);
2868 * Note: Under no circumstances do we
2869 * remove '..' elements. In
2870 * particular, restoring
2871 * '/foo/../bar/' should create the
2872 * 'foo' dir as a side-effect.
2877 /* Copy current element, including leading '/'. */
2880 while (*src != '\0' && *src != '/') {
2887 /* Skip '/' separator. */
2891 * We've just copied zero or more path elements, not including the
2896 * Nothing got copied. The path must have been something
2897 * like '.' or '/' or './' or '/././././/./'.
2904 /* Terminate the result. */
2906 return (ARCHIVE_OK);
2910 cleanup_pathname(struct archive_write_disk *a)
2912 struct archive_string error_string;
2915 archive_string_init(&error_string);
2916 rc = cleanup_pathname_fsobj(a->name, &error_number, &error_string,
2918 if (rc != ARCHIVE_OK) {
2919 archive_set_error(&a->archive, error_number, "%s",
2922 archive_string_free(&error_string);
2927 * Create the parent directory of the specified path, assuming path
2928 * is already in mutable storage.
2931 create_parent_dir(struct archive_write_disk *a, char *path)
2936 /* Remove tail element to obtain parent name. */
2937 slash = strrchr(path, '/');
2939 return (ARCHIVE_OK);
2941 r = create_dir(a, path);
2947 * Create the specified dir, recursing to create parents as necessary.
2949 * Returns ARCHIVE_OK if the path exists when we're done here.
2950 * Otherwise, returns ARCHIVE_FAILED.
2951 * Assumes path is in mutable storage; path is unchanged on exit.
2954 create_dir(struct archive_write_disk *a, char *path)
2957 struct fixup_entry *le;
2959 mode_t mode_final, mode;
2962 /* Check for special names and just skip them. */
2963 slash = strrchr(path, '/');
2969 if (base[0] == '\0' ||
2970 (base[0] == '.' && base[1] == '\0') ||
2971 (base[0] == '.' && base[1] == '.' && base[2] == '\0')) {
2972 /* Don't bother trying to create null path, '.', or '..'. */
2973 if (slash != NULL) {
2975 r = create_dir(a, path);
2979 return (ARCHIVE_OK);
2983 * Yes, this should be stat() and not lstat(). Using lstat()
2984 * here loses the ability to extract through symlinks. Also note
2985 * that this should not use the a->st cache.
2987 if (stat(path, &st) == 0) {
2988 if (S_ISDIR(st.st_mode))
2989 return (ARCHIVE_OK);
2990 if ((a->flags & ARCHIVE_EXTRACT_NO_OVERWRITE)) {
2991 archive_set_error(&a->archive, EEXIST,
2992 "Can't create directory '%s'", path);
2993 return (ARCHIVE_FAILED);
2995 if (unlink(path) != 0) {
2996 archive_set_error(&a->archive, errno,
2997 "Can't create directory '%s': "
2998 "Conflicting file cannot be removed",
3000 return (ARCHIVE_FAILED);
3002 } else if (errno != ENOENT && errno != ENOTDIR) {
3004 archive_set_error(&a->archive, errno,
3005 "Can't test directory '%s'", path);
3006 return (ARCHIVE_FAILED);
3007 } else if (slash != NULL) {
3009 r = create_dir(a, path);
3011 if (r != ARCHIVE_OK)
3016 * Mode we want for the final restored directory. Per POSIX,
3017 * implicitly-created dirs must be created obeying the umask.
3018 * There's no mention whether this is different for privileged
3019 * restores (which the rest of this code handles by pretending
3020 * umask=0). I've chosen here to always obey the user's umask for
3021 * implicit dirs, even if _EXTRACT_PERM was specified.
3023 mode_final = DEFAULT_DIR_MODE & ~a->user_umask;
3024 /* Mode we want on disk during the restore process. */
3026 mode |= MINIMUM_DIR_MODE;
3027 mode &= MAXIMUM_DIR_MODE;
3028 if (mkdir(path, mode) == 0) {
3029 if (mode != mode_final) {
3030 le = new_fixup(a, path);
3032 return (ARCHIVE_FATAL);
3033 le->fixup |=TODO_MODE_BASE;
3034 le->mode = mode_final;
3036 return (ARCHIVE_OK);
3040 * Without the following check, a/b/../b/c/d fails at the
3041 * second visit to 'b', so 'd' can't be created. Note that we
3042 * don't add it to the fixup list here, as it's already been
3045 if (stat(path, &st) == 0 && S_ISDIR(st.st_mode))
3046 return (ARCHIVE_OK);
3048 archive_set_error(&a->archive, errno, "Failed to create dir '%s'",
3050 return (ARCHIVE_FAILED);
3054 * Note: Although we can skip setting the user id if the desired user
3055 * id matches the current user, we cannot skip setting the group, as
3056 * many systems set the gid based on the containing directory. So
3057 * we have to perform a chown syscall if we want to set the SGID
3058 * bit. (The alternative is to stat() and then possibly chown(); it's
3059 * more efficient to skip the stat() and just always chown().) Note
3060 * that a successful chown() here clears the TODO_SGID_CHECK bit, which
3061 * allows set_mode to skip the stat() check for the GID.
3064 set_ownership(struct archive_write_disk *a)
3067 /* unfortunately, on win32 there is no 'root' user with uid 0,
3068 so we just have to try the chown and see if it works */
3070 /* If we know we can't change it, don't bother trying. */
3071 if (a->user_uid != 0 && a->user_uid != a->uid) {
3072 archive_set_error(&a->archive, errno,
3073 "Can't set UID=%jd", (intmax_t)a->uid);
3074 return (ARCHIVE_WARN);
3079 /* If we have an fd, we can avoid a race. */
3080 if (a->fd >= 0 && fchown(a->fd, a->uid, a->gid) == 0) {
3081 /* We've set owner and know uid/gid are correct. */
3082 a->todo &= ~(TODO_OWNER | TODO_SGID_CHECK | TODO_SUID_CHECK);
3083 return (ARCHIVE_OK);
3087 /* We prefer lchown() but will use chown() if that's all we have. */
3088 /* Of course, if we have neither, this will always fail. */
3090 if (lchown(a->name, a->uid, a->gid) == 0) {
3091 /* We've set owner and know uid/gid are correct. */
3092 a->todo &= ~(TODO_OWNER | TODO_SGID_CHECK | TODO_SUID_CHECK);
3093 return (ARCHIVE_OK);
3096 if (!S_ISLNK(a->mode) && chown(a->name, a->uid, a->gid) == 0) {
3097 /* We've set owner and know uid/gid are correct. */
3098 a->todo &= ~(TODO_OWNER | TODO_SGID_CHECK | TODO_SUID_CHECK);
3099 return (ARCHIVE_OK);
3103 archive_set_error(&a->archive, errno,
3104 "Can't set user=%jd/group=%jd for %s",
3105 (intmax_t)a->uid, (intmax_t)a->gid, a->name);
3106 return (ARCHIVE_WARN);
3110 * Note: Returns 0 on success, non-zero on failure.
3113 set_time(int fd, int mode, const char *name,
3114 time_t atime, long atime_nsec,
3115 time_t mtime, long mtime_nsec)
3117 /* Select the best implementation for this platform. */
3118 #if defined(HAVE_UTIMENSAT) && defined(HAVE_FUTIMENS)
3120 * utimensat() and futimens() are defined in
3121 * POSIX.1-2008. They support ns resolution and setting times
3122 * on fds and symlinks.
3124 struct timespec ts[2];
3125 (void)mode; /* UNUSED */
3126 ts[0].tv_sec = atime;
3127 ts[0].tv_nsec = atime_nsec;
3128 ts[1].tv_sec = mtime;
3129 ts[1].tv_nsec = mtime_nsec;
3131 return futimens(fd, ts);
3132 return utimensat(AT_FDCWD, name, ts, AT_SYMLINK_NOFOLLOW);
3136 * The utimes()-family functions support µs-resolution and
3137 * setting times fds and symlinks. utimes() is documented as
3138 * LEGACY by POSIX, futimes() and lutimes() are not described
3141 struct timeval times[2];
3143 times[0].tv_sec = atime;
3144 times[0].tv_usec = atime_nsec / 1000;
3145 times[1].tv_sec = mtime;
3146 times[1].tv_usec = mtime_nsec / 1000;
3150 return (futimes(fd, times));
3152 (void)fd; /* UNUSED */
3155 (void)mode; /* UNUSED */
3156 return (lutimes(name, times));
3160 return (utimes(name, times));
3163 #elif defined(HAVE_UTIME)
3165 * utime() is POSIX-standard but only supports 1s resolution and
3166 * does not support fds or symlinks.
3168 struct utimbuf times;
3169 (void)fd; /* UNUSED */
3170 (void)name; /* UNUSED */
3171 (void)atime_nsec; /* UNUSED */
3172 (void)mtime_nsec; /* UNUSED */
3173 times.actime = atime;
3174 times.modtime = mtime;
3176 return (ARCHIVE_OK);
3177 return (utime(name, ×));
3181 * We don't know how to set the time on this platform.
3183 (void)fd; /* UNUSED */
3184 (void)mode; /* UNUSED */
3185 (void)name; /* UNUSED */
3186 (void)atime_nsec; /* UNUSED */
3187 (void)mtime_nsec; /* UNUSED */
3188 return (ARCHIVE_WARN);
3194 set_time_tru64(int fd, int mode, const char *name,
3195 time_t atime, long atime_nsec,
3196 time_t mtime, long mtime_nsec,
3197 time_t ctime, long ctime_nsec)
3199 struct attr_timbuf tstamp;
3200 tstamp.atime.tv_sec = atime;
3201 tstamp.mtime.tv_sec = mtime;
3202 tstamp.ctime.tv_sec = ctime;
3203 #if defined (__hpux) && defined (__ia64)
3204 tstamp.atime.tv_nsec = atime_nsec;
3205 tstamp.mtime.tv_nsec = mtime_nsec;
3206 tstamp.ctime.tv_nsec = ctime_nsec;
3208 tstamp.atime.tv_usec = atime_nsec / 1000;
3209 tstamp.mtime.tv_usec = mtime_nsec / 1000;
3210 tstamp.ctime.tv_usec = ctime_nsec / 1000;
3212 return (fcntl(fd,F_SETTIMES,&tstamp));
3214 #endif /* F_SETTIMES */
3217 set_times(struct archive_write_disk *a,
3218 int fd, int mode, const char *name,
3219 time_t atime, long atime_nanos,
3220 time_t birthtime, long birthtime_nanos,
3221 time_t mtime, long mtime_nanos,
3222 time_t cctime, long ctime_nanos)
3224 /* Note: set_time doesn't use libarchive return conventions!
3225 * It uses syscall conventions. So 0 here instead of ARCHIVE_OK. */
3230 * on Tru64 try own fcntl first which can restore even the
3231 * ctime, fall back to default code path below if it fails
3232 * or if we are not running as root
3234 if (a->user_uid == 0 &&
3235 set_time_tru64(fd, mode, name,
3236 atime, atime_nanos, mtime,
3237 mtime_nanos, cctime, ctime_nanos) == 0) {
3238 return (ARCHIVE_OK);
3241 (void)cctime; /* UNUSED */
3242 (void)ctime_nanos; /* UNUSED */
3245 #ifdef HAVE_STRUCT_STAT_ST_BIRTHTIME
3247 * If you have struct stat.st_birthtime, we assume BSD
3248 * birthtime semantics, in which {f,l,}utimes() updates
3249 * birthtime to earliest mtime. So we set the time twice,
3250 * first using the birthtime, then using the mtime. If
3251 * birthtime == mtime, this isn't necessary, so we skip it.
3252 * If birthtime > mtime, then this won't work, so we skip it.
3254 if (birthtime < mtime
3255 || (birthtime == mtime && birthtime_nanos < mtime_nanos))
3256 r1 = set_time(fd, mode, name,
3258 birthtime, birthtime_nanos);
3260 (void)birthtime; /* UNUSED */
3261 (void)birthtime_nanos; /* UNUSED */
3263 r2 = set_time(fd, mode, name,
3265 mtime, mtime_nanos);
3266 if (r1 != 0 || r2 != 0) {
3267 archive_set_error(&a->archive, errno,
3268 "Can't restore time");
3269 return (ARCHIVE_WARN);
3271 return (ARCHIVE_OK);
3275 set_times_from_entry(struct archive_write_disk *a)
3277 time_t atime, birthtime, mtime, cctime;
3278 long atime_nsec, birthtime_nsec, mtime_nsec, ctime_nsec;
3280 /* Suitable defaults. */
3281 atime = birthtime = mtime = cctime = a->start_time;
3282 atime_nsec = birthtime_nsec = mtime_nsec = ctime_nsec = 0;
3284 /* If no time was provided, we're done. */
3285 if (!archive_entry_atime_is_set(a->entry)
3286 #if HAVE_STRUCT_STAT_ST_BIRTHTIME
3287 && !archive_entry_birthtime_is_set(a->entry)
3289 && !archive_entry_mtime_is_set(a->entry))
3290 return (ARCHIVE_OK);
3292 if (archive_entry_atime_is_set(a->entry)) {
3293 atime = archive_entry_atime(a->entry);
3294 atime_nsec = archive_entry_atime_nsec(a->entry);
3296 if (archive_entry_birthtime_is_set(a->entry)) {
3297 birthtime = archive_entry_birthtime(a->entry);
3298 birthtime_nsec = archive_entry_birthtime_nsec(a->entry);
3300 if (archive_entry_mtime_is_set(a->entry)) {
3301 mtime = archive_entry_mtime(a->entry);
3302 mtime_nsec = archive_entry_mtime_nsec(a->entry);
3304 if (archive_entry_ctime_is_set(a->entry)) {
3305 cctime = archive_entry_ctime(a->entry);
3306 ctime_nsec = archive_entry_ctime_nsec(a->entry);
3309 return set_times(a, a->fd, a->mode, a->name,
3311 birthtime, birthtime_nsec,
3313 cctime, ctime_nsec);
3317 set_mode(struct archive_write_disk *a, int mode)
3320 mode &= 07777; /* Strip off file type bits. */
3322 if (a->todo & TODO_SGID_CHECK) {
3324 * If we don't know the GID is right, we must stat()
3325 * to verify it. We can't just check the GID of this
3326 * process, since systems sometimes set GID from
3327 * the enclosing dir or based on ACLs.
3329 if ((r = lazy_stat(a)) != ARCHIVE_OK)
3331 if (a->pst->st_gid != a->gid) {
3333 if (a->flags & ARCHIVE_EXTRACT_OWNER) {
3335 * This is only an error if you
3336 * requested owner restore. If you
3337 * didn't, we'll try to restore
3338 * sgid/suid, but won't consider it a
3339 * problem if we can't.
3341 archive_set_error(&a->archive, -1,
3342 "Can't restore SGID bit");
3346 /* While we're here, double-check the UID. */
3347 if (a->pst->st_uid != a->uid
3348 && (a->todo & TODO_SUID)) {
3350 if (a->flags & ARCHIVE_EXTRACT_OWNER) {
3351 archive_set_error(&a->archive, -1,
3352 "Can't restore SUID bit");
3356 a->todo &= ~TODO_SGID_CHECK;
3357 a->todo &= ~TODO_SUID_CHECK;
3358 } else if (a->todo & TODO_SUID_CHECK) {
3360 * If we don't know the UID is right, we can just check
3361 * the user, since all systems set the file UID from
3364 if (a->user_uid != a->uid) {
3366 if (a->flags & ARCHIVE_EXTRACT_OWNER) {
3367 archive_set_error(&a->archive, -1,
3368 "Can't make file SUID");
3372 a->todo &= ~TODO_SUID_CHECK;
3375 if (S_ISLNK(a->mode)) {
3378 * If this is a symlink, use lchmod(). If the
3379 * platform doesn't support lchmod(), just skip it. A
3380 * platform that doesn't provide a way to set
3381 * permissions on symlinks probably ignores
3382 * permissions on symlinks, so a failure here has no
3385 if (lchmod(a->name, mode) != 0) {
3389 #if ENOTSUP != EOPNOTSUPP
3393 * if lchmod is defined but the platform
3394 * doesn't support it, silently ignore
3399 archive_set_error(&a->archive, errno,
3400 "Can't set permissions to 0%o", (int)mode);
3405 } else if (!S_ISDIR(a->mode)) {
3407 * If it's not a symlink and not a dir, then use
3408 * fchmod() or chmod(), depending on whether we have
3409 * an fd. Dirs get their perms set during the
3410 * post-extract fixup, which is handled elsewhere.
3414 if (fchmod(a->fd, mode) != 0) {
3415 archive_set_error(&a->archive, errno,
3416 "Can't set permissions to 0%o", (int)mode);
3421 /* If this platform lacks fchmod(), then
3422 * we'll just use chmod(). */
3423 if (chmod(a->name, mode) != 0) {
3424 archive_set_error(&a->archive, errno,
3425 "Can't set permissions to 0%o", (int)mode);
3433 set_fflags(struct archive_write_disk *a)
3435 struct fixup_entry *le;
3436 unsigned long set, clear;
3439 mode_t mode = archive_entry_mode(a->entry);
3442 * Make 'critical_flags' hold all file flags that can't be
3443 * immediately restored. For example, on BSD systems,
3444 * SF_IMMUTABLE prevents hardlinks from being created, so
3445 * should not be set until after any hardlinks are created. To
3446 * preserve some semblance of portability, this uses #ifdef
3447 * extensively. Ugly, but it works.
3449 * Yes, Virginia, this does create a security race. It's mitigated
3450 * somewhat by the practice of creating dirs 0700 until the extract
3451 * is done, but it would be nice if we could do more than that.
3452 * People restoring critical file systems should be wary of
3453 * other programs that might try to muck with files as they're
3456 /* Hopefully, the compiler will optimize this mess into a constant. */
3459 critical_flags |= SF_IMMUTABLE;
3462 critical_flags |= UF_IMMUTABLE;
3465 critical_flags |= SF_APPEND;
3468 critical_flags |= UF_APPEND;
3470 #if defined(FS_APPEND_FL)
3471 critical_flags |= FS_APPEND_FL;
3472 #elif defined(EXT2_APPEND_FL)
3473 critical_flags |= EXT2_APPEND_FL;
3475 #if defined(FS_IMMUTABLE_FL)
3476 critical_flags |= FS_IMMUTABLE_FL;
3477 #elif defined(EXT2_IMMUTABLE_FL)
3478 critical_flags |= EXT2_IMMUTABLE_FL;
3480 #ifdef FS_JOURNAL_DATA_FL
3481 critical_flags |= FS_JOURNAL_DATA_FL;
3484 if (a->todo & TODO_FFLAGS) {
3485 archive_entry_fflags(a->entry, &set, &clear);
3488 * The first test encourages the compiler to eliminate
3489 * all of this if it's not necessary.
3491 if ((critical_flags != 0) && (set & critical_flags)) {
3492 le = current_fixup(a, a->name);
3494 return (ARCHIVE_FATAL);
3495 le->fixup |= TODO_FFLAGS;
3496 le->fflags_set = set;
3497 /* Store the mode if it's not already there. */
3498 if ((le->fixup & TODO_MODE) == 0)
3501 r = set_fflags_platform(a, a->fd,
3502 a->name, mode, set, clear);
3503 if (r != ARCHIVE_OK)
3507 return (ARCHIVE_OK);
3511 clear_nochange_fflags(struct archive_write_disk *a)
3514 mode_t mode = archive_entry_mode(a->entry);
3516 /* Hopefully, the compiler will optimize this mess into a constant. */
3519 nochange_flags |= SF_IMMUTABLE;
3522 nochange_flags |= UF_IMMUTABLE;
3525 nochange_flags |= SF_APPEND;
3528 nochange_flags |= UF_APPEND;
3530 #ifdef EXT2_APPEND_FL
3531 nochange_flags |= EXT2_APPEND_FL;
3533 #ifdef EXT2_IMMUTABLE_FL
3534 nochange_flags |= EXT2_IMMUTABLE_FL;
3537 return (set_fflags_platform(a, a->fd, a->name, mode, 0,
3542 #if ( defined(HAVE_LCHFLAGS) || defined(HAVE_CHFLAGS) || defined(HAVE_FCHFLAGS) ) && defined(HAVE_STRUCT_STAT_ST_FLAGS)
3544 * BSD reads flags using stat() and sets them with one of {f,l,}chflags()
3547 set_fflags_platform(struct archive_write_disk *a, int fd, const char *name,
3548 mode_t mode, unsigned long set, unsigned long clear)
3552 (void)mode; /* UNUSED */
3553 if (set == 0 && clear == 0)
3554 return (ARCHIVE_OK);
3557 * XXX Is the stat here really necessary? Or can I just use
3558 * the 'set' flags directly? In particular, I'm not sure
3559 * about the correct approach if we're overwriting an existing
3560 * file that already has flags on it. XXX
3562 if ((r = lazy_stat(a)) != ARCHIVE_OK)
3565 a->st.st_flags &= ~clear;
3566 a->st.st_flags |= set;
3567 #ifdef HAVE_FCHFLAGS
3568 /* If platform has fchflags() and we were given an fd, use it. */
3569 if (fd >= 0 && fchflags(fd, a->st.st_flags) == 0)
3570 return (ARCHIVE_OK);
3573 * If we can't use the fd to set the flags, we'll use the
3574 * pathname to set flags. We prefer lchflags() but will use
3575 * chflags() if we must.
3577 #ifdef HAVE_LCHFLAGS
3578 if (lchflags(name, a->st.st_flags) == 0)
3579 return (ARCHIVE_OK);
3580 #elif defined(HAVE_CHFLAGS)
3581 if (S_ISLNK(a->st.st_mode)) {
3582 archive_set_error(&a->archive, errno,
3583 "Can't set file flags on symlink.");
3584 return (ARCHIVE_WARN);
3586 if (chflags(name, a->st.st_flags) == 0)
3587 return (ARCHIVE_OK);
3589 archive_set_error(&a->archive, errno,
3590 "Failed to set file flags");
3591 return (ARCHIVE_WARN);
3594 #elif (defined(FS_IOC_GETFLAGS) && defined(FS_IOC_SETFLAGS) && \
3595 defined(HAVE_WORKING_FS_IOC_GETFLAGS)) || \
3596 (defined(EXT2_IOC_GETFLAGS) && defined(EXT2_IOC_SETFLAGS) && \
3597 defined(HAVE_WORKING_EXT2_IOC_GETFLAGS))
3599 * Linux uses ioctl() to read and write file flags.
3602 set_fflags_platform(struct archive_write_disk *a, int fd, const char *name,
3603 mode_t mode, unsigned long set, unsigned long clear)
3607 int newflags, oldflags;
3610 if (set == 0 && clear == 0)
3611 return (ARCHIVE_OK);
3612 /* Only regular files and dirs can have flags. */
3613 if (!S_ISREG(mode) && !S_ISDIR(mode))
3614 return (ARCHIVE_OK);
3616 /* If we weren't given an fd, open it ourselves. */
3618 myfd = open(name, O_RDONLY | O_NONBLOCK | O_BINARY | O_CLOEXEC);
3619 __archive_ensure_cloexec_flag(myfd);
3622 return (ARCHIVE_OK);
3625 * Linux has no define for the flags that are only settable by
3626 * the root user. This code may seem a little complex, but
3627 * there seem to be some Linux systems that lack these
3628 * defines. (?) The code below degrades reasonably gracefully
3629 * if sf_mask is incomplete.
3631 #if defined(FS_IMMUTABLE_FL)
3632 sf_mask |= FS_IMMUTABLE_FL;
3633 #elif defined(EXT2_IMMUTABLE_FL)
3634 sf_mask |= EXT2_IMMUTABLE_FL;
3636 #if defined(FS_APPEND_FL)
3637 sf_mask |= FS_APPEND_FL;
3638 #elif defined(EXT2_APPEND_FL)
3639 sf_mask |= EXT2_APPEND_FL;
3641 #if defined(FS_JOURNAL_DATA_FL)
3642 sf_mask |= FS_JOURNAL_DATA_FL;
3645 * XXX As above, this would be way simpler if we didn't have
3646 * to read the current flags from disk. XXX
3650 /* Read the current file flags. */
3652 #ifdef FS_IOC_GETFLAGS
3660 /* Try setting the flags as given. */
3661 newflags = (oldflags & ~clear) | set;
3663 #ifdef FS_IOC_SETFLAGS
3673 /* If we couldn't set all the flags, try again with a subset. */
3674 newflags &= ~sf_mask;
3675 oldflags &= sf_mask;
3676 newflags |= oldflags;
3678 #ifdef FS_IOC_SETFLAGS
3686 /* We couldn't set the flags, so report the failure. */
3688 archive_set_error(&a->archive, errno,
3689 "Failed to set file flags");
3700 * Of course, some systems have neither BSD chflags() nor Linux' flags
3701 * support through ioctl().
3704 set_fflags_platform(struct archive_write_disk *a, int fd, const char *name,
3705 mode_t mode, unsigned long set, unsigned long clear)
3707 (void)a; /* UNUSED */
3708 (void)fd; /* UNUSED */
3709 (void)name; /* UNUSED */
3710 (void)mode; /* UNUSED */
3711 (void)set; /* UNUSED */
3712 (void)clear; /* UNUSED */
3713 return (ARCHIVE_OK);
3716 #endif /* __linux */
3718 #ifndef HAVE_COPYFILE_H
3719 /* Default is to simply drop Mac extended metadata. */
3721 set_mac_metadata(struct archive_write_disk *a, const char *pathname,
3722 const void *metadata, size_t metadata_size)
3724 (void)a; /* UNUSED */
3725 (void)pathname; /* UNUSED */
3726 (void)metadata; /* UNUSED */
3727 (void)metadata_size; /* UNUSED */
3728 return (ARCHIVE_OK);
3732 fixup_appledouble(struct archive_write_disk *a, const char *pathname)
3734 (void)a; /* UNUSED */
3735 (void)pathname; /* UNUSED */
3736 return (ARCHIVE_OK);
3741 * On Mac OS, we use copyfile() to unpack the metadata and
3742 * apply it to the target file.
3745 #if defined(HAVE_SYS_XATTR_H)
3747 copy_xattrs(struct archive_write_disk *a, int tmpfd, int dffd)
3750 char *xattr_names = NULL, *xattr_val = NULL;
3751 int ret = ARCHIVE_OK, xattr_i;
3753 xattr_size = flistxattr(tmpfd, NULL, 0, 0);
3754 if (xattr_size == -1) {
3755 archive_set_error(&a->archive, errno,
3756 "Failed to read metadata(xattr)");
3760 xattr_names = malloc(xattr_size);
3761 if (xattr_names == NULL) {
3762 archive_set_error(&a->archive, ENOMEM,
3763 "Can't allocate memory for metadata(xattr)");
3764 ret = ARCHIVE_FATAL;
3767 xattr_size = flistxattr(tmpfd, xattr_names, xattr_size, 0);
3768 if (xattr_size == -1) {
3769 archive_set_error(&a->archive, errno,
3770 "Failed to read metadata(xattr)");
3774 for (xattr_i = 0; xattr_i < xattr_size;
3775 xattr_i += strlen(xattr_names + xattr_i) + 1) {
3776 char *xattr_val_saved;
3780 s = fgetxattr(tmpfd, xattr_names + xattr_i, NULL, 0, 0, 0);
3782 archive_set_error(&a->archive, errno,
3783 "Failed to get metadata(xattr)");
3787 xattr_val_saved = xattr_val;
3788 xattr_val = realloc(xattr_val, s);
3789 if (xattr_val == NULL) {
3790 archive_set_error(&a->archive, ENOMEM,
3791 "Failed to get metadata(xattr)");
3793 free(xattr_val_saved);
3796 s = fgetxattr(tmpfd, xattr_names + xattr_i, xattr_val, s, 0, 0);
3798 archive_set_error(&a->archive, errno,
3799 "Failed to get metadata(xattr)");
3803 f = fsetxattr(dffd, xattr_names + xattr_i, xattr_val, s, 0, 0);
3805 archive_set_error(&a->archive, errno,
3806 "Failed to get metadata(xattr)");
3819 copy_acls(struct archive_write_disk *a, int tmpfd, int dffd)
3821 #ifndef HAVE_SYS_ACL_H
3824 acl_t acl, dfacl = NULL;
3825 int acl_r, ret = ARCHIVE_OK;
3827 acl = acl_get_fd(tmpfd);
3829 if (errno == ENOENT)
3830 /* There are not any ACLs. */
3832 archive_set_error(&a->archive, errno,
3833 "Failed to get metadata(acl)");
3837 dfacl = acl_dup(acl);
3838 acl_r = acl_set_fd(dffd, dfacl);
3840 archive_set_error(&a->archive, errno,
3841 "Failed to get metadata(acl)");
3855 create_tempdatafork(struct archive_write_disk *a, const char *pathname)
3857 struct archive_string tmpdatafork;
3860 archive_string_init(&tmpdatafork);
3861 archive_strcpy(&tmpdatafork, "tar.md.XXXXXX");
3862 tmpfd = mkstemp(tmpdatafork.s);
3864 archive_set_error(&a->archive, errno,
3865 "Failed to mkstemp");
3866 archive_string_free(&tmpdatafork);
3869 if (copyfile(pathname, tmpdatafork.s, 0,
3870 COPYFILE_UNPACK | COPYFILE_NOFOLLOW
3871 | COPYFILE_ACL | COPYFILE_XATTR) < 0) {
3872 archive_set_error(&a->archive, errno,
3873 "Failed to restore metadata");
3877 unlink(tmpdatafork.s);
3878 archive_string_free(&tmpdatafork);
3883 copy_metadata(struct archive_write_disk *a, const char *metadata,
3884 const char *datafork, int datafork_compressed)
3886 int ret = ARCHIVE_OK;
3888 if (datafork_compressed) {
3891 tmpfd = create_tempdatafork(a, metadata);
3893 return (ARCHIVE_WARN);
3896 * Do not open the data fork compressed by HFS+ compression
3897 * with at least a writing mode(O_RDWR or O_WRONLY). it
3898 * makes the data fork uncompressed.
3900 dffd = open(datafork, 0);
3902 archive_set_error(&a->archive, errno,
3903 "Failed to open the data fork for metadata");
3905 return (ARCHIVE_WARN);
3908 #if defined(HAVE_SYS_XATTR_H)
3909 ret = copy_xattrs(a, tmpfd, dffd);
3910 if (ret == ARCHIVE_OK)
3912 ret = copy_acls(a, tmpfd, dffd);
3916 if (copyfile(metadata, datafork, 0,
3917 COPYFILE_UNPACK | COPYFILE_NOFOLLOW
3918 | COPYFILE_ACL | COPYFILE_XATTR) < 0) {
3919 archive_set_error(&a->archive, errno,
3920 "Failed to restore metadata");
3928 set_mac_metadata(struct archive_write_disk *a, const char *pathname,
3929 const void *metadata, size_t metadata_size)
3931 struct archive_string tmp;
3934 int ret = ARCHIVE_OK;
3936 /* This would be simpler if copyfile() could just accept the
3937 * metadata as a block of memory; then we could sidestep this
3938 * silly dance of writing the data to disk just so that
3939 * copyfile() can read it back in again. */
3940 archive_string_init(&tmp);
3941 archive_strcpy(&tmp, pathname);
3942 archive_strcat(&tmp, ".XXXXXX");
3943 fd = mkstemp(tmp.s);
3946 archive_set_error(&a->archive, errno,
3947 "Failed to restore metadata");
3948 archive_string_free(&tmp);
3949 return (ARCHIVE_WARN);
3951 written = write(fd, metadata, metadata_size);
3953 if ((size_t)written != metadata_size) {
3954 archive_set_error(&a->archive, errno,
3955 "Failed to restore metadata");
3960 #if defined(UF_COMPRESSED)
3961 if ((a->todo & TODO_HFS_COMPRESSION) != 0 &&
3962 (ret = lazy_stat(a)) == ARCHIVE_OK)
3963 compressed = a->st.st_flags & UF_COMPRESSED;
3967 ret = copy_metadata(a, tmp.s, pathname, compressed);
3970 archive_string_free(&tmp);
3975 fixup_appledouble(struct archive_write_disk *a, const char *pathname)
3980 struct archive_string datafork;
3981 int fd = -1, ret = ARCHIVE_OK;
3983 archive_string_init(&datafork);
3984 /* Check if the current file name is a type of the resource
3986 p = strrchr(pathname, '/');
3991 if (p[0] != '.' || p[1] != '_')
3992 goto skip_appledouble;
3995 * Check if the data fork file exists.
3997 * TODO: Check if this write disk object has handled it.
3999 archive_strncpy(&datafork, pathname, p - pathname);
4000 archive_strcat(&datafork, p + 2);
4001 if (lstat(datafork.s, &st) == -1 ||
4002 (st.st_mode & AE_IFMT) != AE_IFREG)
4003 goto skip_appledouble;
4006 * Check if the file is in the AppleDouble form.
4008 fd = open(pathname, O_RDONLY | O_BINARY | O_CLOEXEC);
4009 __archive_ensure_cloexec_flag(fd);
4011 archive_set_error(&a->archive, errno,
4012 "Failed to open a restoring file");
4014 goto skip_appledouble;
4016 if (read(fd, buff, 8) == -1) {
4017 archive_set_error(&a->archive, errno,
4018 "Failed to read a restoring file");
4021 goto skip_appledouble;
4024 /* Check AppleDouble Magic Code. */
4025 if (archive_be32dec(buff) != 0x00051607)
4026 goto skip_appledouble;
4027 /* Check AppleDouble Version. */
4028 if (archive_be32dec(buff+4) != 0x00020000)
4029 goto skip_appledouble;
4031 ret = copy_metadata(a, pathname, datafork.s,
4032 #if defined(UF_COMPRESSED)
4033 st.st_flags & UF_COMPRESSED);
4037 if (ret == ARCHIVE_OK) {
4042 archive_string_free(&datafork);
4047 #if HAVE_LSETXATTR || HAVE_LSETEA
4049 * Restore extended attributes - Linux and AIX implementations:
4050 * AIX' ea interface is syntaxwise identical to the Linux xattr interface.
4053 set_xattrs(struct archive_write_disk *a)
4055 struct archive_entry *entry = a->entry;
4056 static int warning_done = 0;
4057 int ret = ARCHIVE_OK;
4058 int i = archive_entry_xattr_reset(entry);
4064 archive_entry_xattr_next(entry, &name, &value, &size);
4066 strncmp(name, "xfsroot.", 8) != 0 &&
4067 strncmp(name, "system.", 7) != 0) {
4071 e = fsetxattr(a->fd, name, value, size, 0);
4075 e = fsetea(a->fd, name, value, size, 0);
4080 e = lsetxattr(archive_entry_pathname(entry),
4081 name, value, size, 0);
4083 e = lsetea(archive_entry_pathname(entry),
4084 name, value, size, 0);
4088 if (errno == ENOTSUP || errno == ENOSYS) {
4089 if (!warning_done) {
4091 archive_set_error(&a->archive,
4093 "Cannot restore extended "
4094 "attributes on this file "
4098 archive_set_error(&a->archive, errno,
4099 "Failed to set extended attribute");
4103 archive_set_error(&a->archive,
4104 ARCHIVE_ERRNO_FILE_FORMAT,
4105 "Invalid extended attribute encountered");
4111 #elif HAVE_EXTATTR_SET_FILE && HAVE_DECL_EXTATTR_NAMESPACE_USER
4113 * Restore extended attributes - FreeBSD implementation
4116 set_xattrs(struct archive_write_disk *a)
4118 struct archive_entry *entry = a->entry;
4119 static int warning_done = 0;
4120 int ret = ARCHIVE_OK;
4121 int i = archive_entry_xattr_reset(entry);
4127 archive_entry_xattr_next(entry, &name, &value, &size);
4132 if (strncmp(name, "user.", 5) == 0) {
4133 /* "user." attributes go to user namespace */
4135 namespace = EXTATTR_NAMESPACE_USER;
4137 /* Warn about other extended attributes. */
4138 archive_set_error(&a->archive,
4139 ARCHIVE_ERRNO_FILE_FORMAT,
4140 "Can't restore extended attribute ``%s''",
4146 #if HAVE_EXTATTR_SET_FD
4148 e = extattr_set_fd(a->fd, namespace, name,
4152 /* TODO: should we use extattr_set_link() instead? */
4154 e = extattr_set_file(
4155 archive_entry_pathname(entry), namespace,
4158 if (e != (ssize_t)size) {
4159 if (errno == ENOTSUP || errno == ENOSYS) {
4160 if (!warning_done) {
4162 archive_set_error(&a->archive,
4164 "Cannot restore extended "
4165 "attributes on this file "
4169 archive_set_error(&a->archive, errno,
4170 "Failed to set extended attribute");
4181 * Restore extended attributes - stub implementation for unsupported systems
4184 set_xattrs(struct archive_write_disk *a)
4186 static int warning_done = 0;
4188 /* If there aren't any extended attributes, then it's okay not
4189 * to extract them, otherwise, issue a single warning. */
4190 if (archive_entry_xattr_count(a->entry) != 0 && !warning_done) {
4192 archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
4193 "Cannot restore extended attributes on this system");
4194 return (ARCHIVE_WARN);
4196 /* Warning was already emitted; suppress further warnings. */
4197 return (ARCHIVE_OK);
4202 * Test if file on disk is older than entry.
4205 older(struct stat *st, struct archive_entry *entry)
4207 /* First, test the seconds and return if we have a definite answer. */
4208 /* Definitely older. */
4209 if (to_int64_time(st->st_mtime) < to_int64_time(archive_entry_mtime(entry)))
4211 /* Definitely younger. */
4212 if (to_int64_time(st->st_mtime) > to_int64_time(archive_entry_mtime(entry)))
4214 /* If this platform supports fractional seconds, try those. */
4215 #if HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC
4216 /* Definitely older. */
4217 if (st->st_mtimespec.tv_nsec < archive_entry_mtime_nsec(entry))
4219 #elif HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
4220 /* Definitely older. */
4221 if (st->st_mtim.tv_nsec < archive_entry_mtime_nsec(entry))
4223 #elif HAVE_STRUCT_STAT_ST_MTIME_N
4225 if (st->st_mtime_n < archive_entry_mtime_nsec(entry))
4227 #elif HAVE_STRUCT_STAT_ST_UMTIME
4229 if (st->st_umtime * 1000 < archive_entry_mtime_nsec(entry))
4231 #elif HAVE_STRUCT_STAT_ST_MTIME_USEC
4233 if (st->st_mtime_usec * 1000 < archive_entry_mtime_nsec(entry))
4236 /* This system doesn't have high-res timestamps. */
4238 /* Same age or newer, so not older. */
4242 #endif /* !_WIN32 || __CYGWIN__ */
projects / FreeBSD / stable / 10.git / blob