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>
43 #include <sys/xattr.h>
44 #elif 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_ACL_DARWIN
580 * On MacOS, platform ACLs get stored in mac_metadata, too.
581 * If we intend to extract mac_metadata and it is present
582 * we skip extracting libarchive NFSv4 ACLs.
584 size_t metadata_size;
586 if ((a->flags & ARCHIVE_EXTRACT_MAC_METADATA) == 0 ||
587 archive_entry_mac_metadata(a->entry,
588 &metadata_size) == NULL || metadata_size == 0)
590 #if ARCHIVE_ACL_LIBRICHACL
592 * RichACLs are stored in an extended attribute.
593 * If we intend to extract extended attributes and have this
594 * attribute we skip extracting libarchive NFSv4 ACLs.
596 short extract_acls = 1;
597 if (a->flags & ARCHIVE_EXTRACT_XATTR && (
598 archive_entry_acl_types(a->entry) &
599 ARCHIVE_ENTRY_ACL_TYPE_NFS4)) {
600 const char *attr_name;
601 const void *attr_value;
603 int i = archive_entry_xattr_reset(a->entry);
605 archive_entry_xattr_next(a->entry, &attr_name,
606 &attr_value, &attr_size);
607 if (attr_name != NULL && attr_value != NULL &&
608 attr_size > 0 && strcmp(attr_name,
609 "trusted.richacl") == 0) {
617 #if ARCHIVE_ACL_DARWIN || ARCHIVE_ACL_LIBRICHACL
620 if (archive_entry_filetype(a->entry) == AE_IFDIR)
621 a->deferred |= TODO_ACLS;
623 a->todo |= TODO_ACLS;
624 #if ARCHIVE_ACL_DARWIN || ARCHIVE_ACL_LIBRICHACL
628 if (a->flags & ARCHIVE_EXTRACT_MAC_METADATA) {
629 if (archive_entry_filetype(a->entry) == AE_IFDIR)
630 a->deferred |= TODO_MAC_METADATA;
632 a->todo |= TODO_MAC_METADATA;
634 #if defined(__APPLE__) && defined(UF_COMPRESSED) && defined(HAVE_ZLIB_H)
635 if ((a->flags & ARCHIVE_EXTRACT_NO_HFS_COMPRESSION) == 0) {
636 unsigned long set, clear;
637 archive_entry_fflags(a->entry, &set, &clear);
638 if ((set & ~clear) & UF_COMPRESSED) {
639 a->todo |= TODO_HFS_COMPRESSION;
640 a->decmpfs_block_count = (unsigned)-1;
643 if ((a->flags & ARCHIVE_EXTRACT_HFS_COMPRESSION_FORCED) != 0 &&
644 (a->mode & AE_IFMT) == AE_IFREG && a->filesize > 0) {
645 a->todo |= TODO_HFS_COMPRESSION;
646 a->decmpfs_block_count = (unsigned)-1;
651 /* Check if the current file name is a type of the
652 * resource fork file. */
653 p = strrchr(a->name, '/');
658 if (p[0] == '.' && p[1] == '_') {
659 /* Do not compress "._XXX" files. */
660 a->todo &= ~TODO_HFS_COMPRESSION;
662 a->todo |= TODO_APPLEDOUBLE;
667 if (a->flags & ARCHIVE_EXTRACT_XATTR) {
668 #if ARCHIVE_XATTR_DARWIN
670 * On MacOS, extended attributes get stored in mac_metadata,
671 * too. If we intend to extract mac_metadata and it is present
672 * we skip extracting extended attributes.
674 size_t metadata_size;
676 if ((a->flags & ARCHIVE_EXTRACT_MAC_METADATA) == 0 ||
677 archive_entry_mac_metadata(a->entry,
678 &metadata_size) == NULL || metadata_size == 0)
680 a->todo |= TODO_XATTR;
682 if (a->flags & ARCHIVE_EXTRACT_FFLAGS)
683 a->todo |= TODO_FFLAGS;
684 if (a->flags & ARCHIVE_EXTRACT_SECURE_SYMLINKS) {
685 ret = check_symlinks(a);
686 if (ret != ARCHIVE_OK)
689 #if defined(HAVE_FCHDIR) && defined(PATH_MAX)
690 /* If path exceeds PATH_MAX, shorten the path. */
691 edit_deep_directories(a);
694 ret = restore_entry(a);
696 #if defined(__APPLE__) && defined(UF_COMPRESSED) && defined(HAVE_ZLIB_H)
698 * Check if the filesystem the file is restoring on supports
699 * HFS+ Compression. If not, cancel HFS+ Compression.
701 if (a->todo | TODO_HFS_COMPRESSION) {
703 * NOTE: UF_COMPRESSED is ignored even if the filesystem
704 * supports HFS+ Compression because the file should
705 * have at least an extended attribute "com.apple.decmpfs"
706 * before the flag is set to indicate that the file have
707 * been compressed. If the filesystem does not support
708 * HFS+ Compression the system call will fail.
710 if (a->fd < 0 || fchflags(a->fd, UF_COMPRESSED) != 0)
711 a->todo &= ~TODO_HFS_COMPRESSION;
716 * TODO: There are rumours that some extended attributes must
717 * be restored before file data is written. If this is true,
718 * then we either need to write all extended attributes both
719 * before and after restoring the data, or find some rule for
720 * determining which must go first and which last. Due to the
721 * many ways people are using xattrs, this may prove to be an
722 * intractable problem.
726 /* If we changed directory above, restore it here. */
727 if (a->restore_pwd >= 0) {
728 r = fchdir(a->restore_pwd);
730 archive_set_error(&a->archive, errno,
734 close(a->restore_pwd);
740 * Fixup uses the unedited pathname from archive_entry_pathname(),
741 * because it is relative to the base dir and the edited path
742 * might be relative to some intermediate dir as a result of the
743 * deep restore logic.
745 if (a->deferred & TODO_MODE) {
746 fe = current_fixup(a, archive_entry_pathname(entry));
748 return (ARCHIVE_FATAL);
749 fe->fixup |= TODO_MODE_BASE;
753 if ((a->deferred & TODO_TIMES)
754 && (archive_entry_mtime_is_set(entry)
755 || archive_entry_atime_is_set(entry))) {
756 fe = current_fixup(a, archive_entry_pathname(entry));
758 return (ARCHIVE_FATAL);
760 fe->fixup |= TODO_TIMES;
761 if (archive_entry_atime_is_set(entry)) {
762 fe->atime = archive_entry_atime(entry);
763 fe->atime_nanos = archive_entry_atime_nsec(entry);
765 /* If atime is unset, use start time. */
766 fe->atime = a->start_time;
769 if (archive_entry_mtime_is_set(entry)) {
770 fe->mtime = archive_entry_mtime(entry);
771 fe->mtime_nanos = archive_entry_mtime_nsec(entry);
773 /* If mtime is unset, use start time. */
774 fe->mtime = a->start_time;
777 if (archive_entry_birthtime_is_set(entry)) {
778 fe->birthtime = archive_entry_birthtime(entry);
779 fe->birthtime_nanos = archive_entry_birthtime_nsec(
782 /* If birthtime is unset, use mtime. */
783 fe->birthtime = fe->mtime;
784 fe->birthtime_nanos = fe->mtime_nanos;
788 if (a->deferred & TODO_ACLS) {
789 fe = current_fixup(a, archive_entry_pathname(entry));
791 return (ARCHIVE_FATAL);
792 fe->fixup |= TODO_ACLS;
793 archive_acl_copy(&fe->acl, archive_entry_acl(entry));
796 if (a->deferred & TODO_MAC_METADATA) {
797 const void *metadata;
798 size_t metadata_size;
799 metadata = archive_entry_mac_metadata(a->entry, &metadata_size);
800 if (metadata != NULL && metadata_size > 0) {
801 fe = current_fixup(a, archive_entry_pathname(entry));
803 return (ARCHIVE_FATAL);
804 fe->mac_metadata = malloc(metadata_size);
805 if (fe->mac_metadata != NULL) {
806 memcpy(fe->mac_metadata, metadata,
808 fe->mac_metadata_size = metadata_size;
809 fe->fixup |= TODO_MAC_METADATA;
814 if (a->deferred & TODO_FFLAGS) {
815 fe = current_fixup(a, archive_entry_pathname(entry));
817 return (ARCHIVE_FATAL);
818 fe->fixup |= TODO_FFLAGS;
819 /* TODO: Complete this.. defer fflags from below. */
822 /* We've created the object and are ready to pour data into it. */
823 if (ret >= ARCHIVE_WARN)
824 a->archive.state = ARCHIVE_STATE_DATA;
826 * If it's not open, tell our client not to try writing.
827 * In particular, dirs, links, etc, don't get written to.
830 archive_entry_set_size(entry, 0);
838 archive_write_disk_set_skip_file(struct archive *_a, la_int64_t d, la_int64_t i)
840 struct archive_write_disk *a = (struct archive_write_disk *)_a;
841 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
842 ARCHIVE_STATE_ANY, "archive_write_disk_set_skip_file");
843 a->skip_file_set = 1;
844 a->skip_file_dev = d;
845 a->skip_file_ino = i;
850 write_data_block(struct archive_write_disk *a, const char *buff, size_t size)
852 uint64_t start_size = size;
853 ssize_t bytes_written = 0;
854 ssize_t block_size = 0, bytes_to_write;
859 if (a->filesize == 0 || a->fd < 0) {
860 archive_set_error(&a->archive, 0,
861 "Attempt to write to an empty file");
862 return (ARCHIVE_WARN);
865 if (a->flags & ARCHIVE_EXTRACT_SPARSE) {
866 #if HAVE_STRUCT_STAT_ST_BLKSIZE
868 if ((r = lazy_stat(a)) != ARCHIVE_OK)
870 block_size = a->pst->st_blksize;
872 /* XXX TODO XXX Is there a more appropriate choice here ? */
873 /* This needn't match the filesystem allocation size. */
874 block_size = 16*1024;
878 /* If this write would run beyond the file size, truncate it. */
879 if (a->filesize >= 0 && (int64_t)(a->offset + size) > a->filesize)
880 start_size = size = (size_t)(a->filesize - a->offset);
882 /* Write the data. */
884 if (block_size == 0) {
885 bytes_to_write = size;
887 /* We're sparsifying the file. */
891 /* Skip leading zero bytes. */
892 for (p = buff, end = buff + size; p < end; ++p) {
896 a->offset += p - buff;
902 /* Calculate next block boundary after offset. */
904 = (a->offset / block_size + 1) * block_size;
906 /* If the adjusted write would cross block boundary,
907 * truncate it to the block boundary. */
908 bytes_to_write = size;
909 if (a->offset + bytes_to_write > block_end)
910 bytes_to_write = block_end - a->offset;
912 /* Seek if necessary to the specified offset. */
913 if (a->offset != a->fd_offset) {
914 if (lseek(a->fd, a->offset, SEEK_SET) < 0) {
915 archive_set_error(&a->archive, errno,
917 return (ARCHIVE_FATAL);
919 a->fd_offset = a->offset;
921 bytes_written = write(a->fd, buff, bytes_to_write);
922 if (bytes_written < 0) {
923 archive_set_error(&a->archive, errno, "Write failed");
924 return (ARCHIVE_WARN);
926 buff += bytes_written;
927 size -= bytes_written;
928 a->total_bytes_written += bytes_written;
929 a->offset += bytes_written;
930 a->fd_offset = a->offset;
932 return (start_size - size);
935 #if defined(__APPLE__) && defined(UF_COMPRESSED) && defined(HAVE_SYS_XATTR_H)\
936 && defined(HAVE_ZLIB_H)
939 * Set UF_COMPRESSED file flag.
940 * This have to be called after hfs_write_decmpfs() because if the
941 * file does not have "com.apple.decmpfs" xattr the flag is ignored.
944 hfs_set_compressed_fflag(struct archive_write_disk *a)
948 if ((r = lazy_stat(a)) != ARCHIVE_OK)
951 a->st.st_flags |= UF_COMPRESSED;
952 if (fchflags(a->fd, a->st.st_flags) != 0) {
953 archive_set_error(&a->archive, errno,
954 "Failed to set UF_COMPRESSED file flag");
955 return (ARCHIVE_WARN);
961 * HFS+ Compression decmpfs
963 * +------------------------------+ +0
964 * | Magic(LE 4 bytes) |
965 * +------------------------------+
966 * | Type(LE 4 bytes) |
967 * +------------------------------+
968 * | Uncompressed size(LE 8 bytes)|
969 * +------------------------------+ +16
971 * | Compressed data |
972 * | (Placed only if Type == 3) |
974 * +------------------------------+ +3802 = MAX_DECMPFS_XATTR_SIZE
976 * Type is 3: decmpfs has compressed data.
977 * Type is 4: Resource Fork has compressed data.
980 * Write "com.apple.decmpfs"
983 hfs_write_decmpfs(struct archive_write_disk *a)
986 uint32_t compression_type;
988 r = fsetxattr(a->fd, DECMPFS_XATTR_NAME, a->decmpfs_header_p,
989 a->decmpfs_attr_size, 0, 0);
991 archive_set_error(&a->archive, errno,
992 "Cannot restore xattr:%s", DECMPFS_XATTR_NAME);
993 compression_type = archive_le32dec(
994 &a->decmpfs_header_p[DECMPFS_COMPRESSION_TYPE]);
995 if (compression_type == CMP_RESOURCE_FORK)
996 fremovexattr(a->fd, XATTR_RESOURCEFORK_NAME,
997 XATTR_SHOWCOMPRESSION);
998 return (ARCHIVE_WARN);
1000 return (ARCHIVE_OK);
1004 * HFS+ Compression Resource Fork
1006 * +-----------------------------+
1007 * | Header(260 bytes) |
1008 * +-----------------------------+
1009 * | Block count(LE 4 bytes) |
1010 * +-----------------------------+ --+
1011 * +-- | Offset (LE 4 bytes) | |
1012 * | | [distance from Block count] | | Block 0
1013 * | +-----------------------------+ |
1014 * | | Compressed size(LE 4 bytes) | |
1015 * | +-----------------------------+ --+
1017 * | | .................. |
1019 * | +-----------------------------+ --+
1020 * | | Offset (LE 4 bytes) | |
1021 * | +-----------------------------+ | Block (Block count -1)
1022 * | | Compressed size(LE 4 bytes) | |
1023 * +-> +-----------------------------+ --+
1024 * | Compressed data(n bytes) | Block 0
1025 * +-----------------------------+
1027 * | .................. |
1029 * +-----------------------------+
1030 * | Compressed data(n bytes) | Block (Block count -1)
1031 * +-----------------------------+
1032 * | Footer(50 bytes) |
1033 * +-----------------------------+
1037 * Write the header of "com.apple.ResourceFork"
1040 hfs_write_resource_fork(struct archive_write_disk *a, unsigned char *buff,
1041 size_t bytes, uint32_t position)
1045 ret = fsetxattr(a->fd, XATTR_RESOURCEFORK_NAME, buff, bytes,
1046 position, a->rsrc_xattr_options);
1048 archive_set_error(&a->archive, errno,
1049 "Cannot restore xattr: %s at %u pos %u bytes",
1050 XATTR_RESOURCEFORK_NAME,
1053 return (ARCHIVE_WARN);
1055 a->rsrc_xattr_options &= ~XATTR_CREATE;
1056 return (ARCHIVE_OK);
1060 hfs_write_compressed_data(struct archive_write_disk *a, size_t bytes_compressed)
1064 ret = hfs_write_resource_fork(a, a->compressed_buffer,
1065 bytes_compressed, a->compressed_rsrc_position);
1066 if (ret == ARCHIVE_OK)
1067 a->compressed_rsrc_position += bytes_compressed;
1072 hfs_write_resource_fork_header(struct archive_write_disk *a)
1074 unsigned char *buff;
1075 uint32_t rsrc_bytes;
1076 uint32_t rsrc_header_bytes;
1079 * Write resource fork header + block info.
1081 buff = a->resource_fork;
1082 rsrc_bytes = a->compressed_rsrc_position - RSRC_F_SIZE;
1084 RSRC_H_SIZE + /* Header base size. */
1085 4 + /* Block count. */
1086 (a->decmpfs_block_count * 8);/* Block info */
1087 archive_be32enc(buff, 0x100);
1088 archive_be32enc(buff + 4, rsrc_bytes);
1089 archive_be32enc(buff + 8, rsrc_bytes - 256);
1090 archive_be32enc(buff + 12, 0x32);
1091 memset(buff + 16, 0, 240);
1092 archive_be32enc(buff + 256, rsrc_bytes - 260);
1093 return hfs_write_resource_fork(a, buff, rsrc_header_bytes, 0);
1097 hfs_set_resource_fork_footer(unsigned char *buff, size_t buff_size)
1099 static const char rsrc_footer[RSRC_F_SIZE] = {
1100 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1101 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1102 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1103 0x00, 0x1c, 0x00, 0x32, 0x00, 0x00, 'c', 'm',
1104 'p', 'f', 0x00, 0x00, 0x00, 0x0a, 0x00, 0x01,
1105 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1108 if (buff_size < sizeof(rsrc_footer))
1110 memcpy(buff, rsrc_footer, sizeof(rsrc_footer));
1111 return (sizeof(rsrc_footer));
1115 hfs_reset_compressor(struct archive_write_disk *a)
1119 if (a->stream_valid)
1120 ret = deflateReset(&a->stream);
1122 ret = deflateInit(&a->stream, a->decmpfs_compression_level);
1125 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1126 "Failed to initialize compressor");
1127 return (ARCHIVE_FATAL);
1129 a->stream_valid = 1;
1131 return (ARCHIVE_OK);
1135 hfs_decompress(struct archive_write_disk *a)
1137 uint32_t *block_info;
1138 unsigned int block_count;
1139 uint32_t data_pos, data_size;
1141 ssize_t bytes_written, bytes_to_write;
1144 block_info = (uint32_t *)(a->resource_fork + RSRC_H_SIZE);
1145 block_count = archive_le32dec(block_info++);
1146 while (block_count--) {
1147 data_pos = RSRC_H_SIZE + archive_le32dec(block_info++);
1148 data_size = archive_le32dec(block_info++);
1149 r = fgetxattr(a->fd, XATTR_RESOURCEFORK_NAME,
1150 a->compressed_buffer, data_size, data_pos, 0);
1151 if (r != data_size) {
1152 archive_set_error(&a->archive,
1153 (r < 0)?errno:ARCHIVE_ERRNO_MISC,
1154 "Failed to read resource fork");
1155 return (ARCHIVE_WARN);
1157 if (a->compressed_buffer[0] == 0xff) {
1158 bytes_to_write = data_size -1;
1159 b = a->compressed_buffer + 1;
1161 uLong dest_len = MAX_DECMPFS_BLOCK_SIZE;
1164 zr = uncompress((Bytef *)a->uncompressed_buffer,
1165 &dest_len, a->compressed_buffer, data_size);
1167 archive_set_error(&a->archive,
1169 "Failed to decompress resource fork");
1170 return (ARCHIVE_WARN);
1172 bytes_to_write = dest_len;
1173 b = (unsigned char *)a->uncompressed_buffer;
1176 bytes_written = write(a->fd, b, bytes_to_write);
1177 if (bytes_written < 0) {
1178 archive_set_error(&a->archive, errno,
1180 return (ARCHIVE_WARN);
1182 bytes_to_write -= bytes_written;
1184 } while (bytes_to_write > 0);
1186 r = fremovexattr(a->fd, XATTR_RESOURCEFORK_NAME, 0);
1188 archive_set_error(&a->archive, errno,
1189 "Failed to remove resource fork");
1190 return (ARCHIVE_WARN);
1192 return (ARCHIVE_OK);
1196 hfs_drive_compressor(struct archive_write_disk *a, const char *buff,
1199 unsigned char *buffer_compressed;
1200 size_t bytes_compressed;
1204 ret = hfs_reset_compressor(a);
1205 if (ret != ARCHIVE_OK)
1208 if (a->compressed_buffer == NULL) {
1211 block_size = COMPRESSED_W_SIZE + RSRC_F_SIZE +
1212 + compressBound(MAX_DECMPFS_BLOCK_SIZE);
1213 a->compressed_buffer = malloc(block_size);
1214 if (a->compressed_buffer == NULL) {
1215 archive_set_error(&a->archive, ENOMEM,
1216 "Can't allocate memory for Resource Fork");
1217 return (ARCHIVE_FATAL);
1219 a->compressed_buffer_size = block_size;
1220 a->compressed_buffer_remaining = block_size;
1223 buffer_compressed = a->compressed_buffer +
1224 a->compressed_buffer_size - a->compressed_buffer_remaining;
1225 a->stream.next_in = (Bytef *)(uintptr_t)(const void *)buff;
1226 a->stream.avail_in = size;
1227 a->stream.next_out = buffer_compressed;
1228 a->stream.avail_out = a->compressed_buffer_remaining;
1230 ret = deflate(&a->stream, Z_FINISH);
1236 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1237 "Failed to compress data");
1238 return (ARCHIVE_FAILED);
1240 } while (ret == Z_OK);
1241 bytes_compressed = a->compressed_buffer_remaining - a->stream.avail_out;
1244 * If the compressed size is larger than the original size,
1245 * throw away compressed data, use uncompressed data instead.
1247 if (bytes_compressed > size) {
1248 buffer_compressed[0] = 0xFF;/* uncompressed marker. */
1249 memcpy(buffer_compressed + 1, buff, size);
1250 bytes_compressed = size + 1;
1252 a->compressed_buffer_remaining -= bytes_compressed;
1255 * If the compressed size is smaller than MAX_DECMPFS_XATTR_SIZE
1256 * and the block count in the file is only one, store compressed
1257 * data to decmpfs xattr instead of the resource fork.
1259 if (a->decmpfs_block_count == 1 &&
1260 (a->decmpfs_attr_size + bytes_compressed)
1261 <= MAX_DECMPFS_XATTR_SIZE) {
1262 archive_le32enc(&a->decmpfs_header_p[DECMPFS_COMPRESSION_TYPE],
1264 memcpy(a->decmpfs_header_p + DECMPFS_HEADER_SIZE,
1265 buffer_compressed, bytes_compressed);
1266 a->decmpfs_attr_size += bytes_compressed;
1267 a->compressed_buffer_remaining = a->compressed_buffer_size;
1269 * Finish HFS+ Compression.
1270 * - Write the decmpfs xattr.
1271 * - Set the UF_COMPRESSED file flag.
1273 ret = hfs_write_decmpfs(a);
1274 if (ret == ARCHIVE_OK)
1275 ret = hfs_set_compressed_fflag(a);
1279 /* Update block info. */
1280 archive_le32enc(a->decmpfs_block_info++,
1281 a->compressed_rsrc_position_v - RSRC_H_SIZE);
1282 archive_le32enc(a->decmpfs_block_info++, bytes_compressed);
1283 a->compressed_rsrc_position_v += bytes_compressed;
1286 * Write the compressed data to the resource fork.
1288 bytes_used = a->compressed_buffer_size - a->compressed_buffer_remaining;
1289 while (bytes_used >= COMPRESSED_W_SIZE) {
1290 ret = hfs_write_compressed_data(a, COMPRESSED_W_SIZE);
1291 if (ret != ARCHIVE_OK)
1293 bytes_used -= COMPRESSED_W_SIZE;
1294 if (bytes_used > COMPRESSED_W_SIZE)
1295 memmove(a->compressed_buffer,
1296 a->compressed_buffer + COMPRESSED_W_SIZE,
1299 memcpy(a->compressed_buffer,
1300 a->compressed_buffer + COMPRESSED_W_SIZE,
1303 a->compressed_buffer_remaining = a->compressed_buffer_size - bytes_used;
1306 * If the current block is the last block, write the remaining
1307 * compressed data and the resource fork footer.
1309 if (a->file_remaining_bytes == 0) {
1313 /* Append the resource footer. */
1314 rsrc_size = hfs_set_resource_fork_footer(
1315 a->compressed_buffer + bytes_used,
1316 a->compressed_buffer_remaining);
1317 ret = hfs_write_compressed_data(a, bytes_used + rsrc_size);
1318 a->compressed_buffer_remaining = a->compressed_buffer_size;
1320 /* If the compressed size is not enough smaller than
1321 * the uncompressed size. cancel HFS+ compression.
1322 * TODO: study a behavior of ditto utility and improve
1323 * the condition to fall back into no HFS+ compression. */
1324 bk = HFS_BLOCKS(a->compressed_rsrc_position);
1326 if (bk > HFS_BLOCKS(a->filesize))
1327 return hfs_decompress(a);
1329 * Write the resourcefork header.
1331 if (ret == ARCHIVE_OK)
1332 ret = hfs_write_resource_fork_header(a);
1334 * Finish HFS+ Compression.
1335 * - Write the decmpfs xattr.
1336 * - Set the UF_COMPRESSED file flag.
1338 if (ret == ARCHIVE_OK)
1339 ret = hfs_write_decmpfs(a);
1340 if (ret == ARCHIVE_OK)
1341 ret = hfs_set_compressed_fflag(a);
1347 hfs_write_decmpfs_block(struct archive_write_disk *a, const char *buff,
1350 const char *buffer_to_write;
1351 size_t bytes_to_write;
1354 if (a->decmpfs_block_count == (unsigned)-1) {
1357 unsigned int block_count;
1359 if (a->decmpfs_header_p == NULL) {
1360 new_block = malloc(MAX_DECMPFS_XATTR_SIZE
1361 + sizeof(uint32_t));
1362 if (new_block == NULL) {
1363 archive_set_error(&a->archive, ENOMEM,
1364 "Can't allocate memory for decmpfs");
1365 return (ARCHIVE_FATAL);
1367 a->decmpfs_header_p = new_block;
1369 a->decmpfs_attr_size = DECMPFS_HEADER_SIZE;
1370 archive_le32enc(&a->decmpfs_header_p[DECMPFS_COMPRESSION_MAGIC],
1372 archive_le32enc(&a->decmpfs_header_p[DECMPFS_COMPRESSION_TYPE],
1374 archive_le64enc(&a->decmpfs_header_p[DECMPFS_UNCOMPRESSED_SIZE],
1377 /* Calculate a block count of the file. */
1379 (a->filesize + MAX_DECMPFS_BLOCK_SIZE -1) /
1380 MAX_DECMPFS_BLOCK_SIZE;
1382 * Allocate buffer for resource fork.
1383 * Set up related pointers;
1386 RSRC_H_SIZE + /* header */
1387 4 + /* Block count */
1388 (block_count * sizeof(uint32_t) * 2) +
1389 RSRC_F_SIZE; /* footer */
1390 if (new_size > a->resource_fork_allocated_size) {
1391 new_block = realloc(a->resource_fork, new_size);
1392 if (new_block == NULL) {
1393 archive_set_error(&a->archive, ENOMEM,
1394 "Can't allocate memory for ResourceFork");
1395 return (ARCHIVE_FATAL);
1397 a->resource_fork_allocated_size = new_size;
1398 a->resource_fork = new_block;
1401 /* Allocate uncompressed buffer */
1402 if (a->uncompressed_buffer == NULL) {
1403 new_block = malloc(MAX_DECMPFS_BLOCK_SIZE);
1404 if (new_block == NULL) {
1405 archive_set_error(&a->archive, ENOMEM,
1406 "Can't allocate memory for decmpfs");
1407 return (ARCHIVE_FATAL);
1409 a->uncompressed_buffer = new_block;
1411 a->block_remaining_bytes = MAX_DECMPFS_BLOCK_SIZE;
1412 a->file_remaining_bytes = a->filesize;
1413 a->compressed_buffer_remaining = a->compressed_buffer_size;
1416 * Set up a resource fork.
1418 a->rsrc_xattr_options = XATTR_CREATE;
1419 /* Get the position where we are going to set a bunch
1421 a->decmpfs_block_info =
1422 (uint32_t *)(a->resource_fork + RSRC_H_SIZE);
1423 /* Set the block count to the resource fork. */
1424 archive_le32enc(a->decmpfs_block_info++, block_count);
1425 /* Get the position where we are going to set compressed
1427 a->compressed_rsrc_position =
1428 RSRC_H_SIZE + 4 + (block_count * 8);
1429 a->compressed_rsrc_position_v = a->compressed_rsrc_position;
1430 a->decmpfs_block_count = block_count;
1433 /* Ignore redundant bytes. */
1434 if (a->file_remaining_bytes == 0)
1435 return ((ssize_t)size);
1437 /* Do not overrun a block size. */
1438 if (size > a->block_remaining_bytes)
1439 bytes_to_write = a->block_remaining_bytes;
1441 bytes_to_write = size;
1442 /* Do not overrun the file size. */
1443 if (bytes_to_write > a->file_remaining_bytes)
1444 bytes_to_write = a->file_remaining_bytes;
1446 /* For efficiency, if a copy length is full of the uncompressed
1447 * buffer size, do not copy writing data to it. */
1448 if (bytes_to_write == MAX_DECMPFS_BLOCK_SIZE)
1449 buffer_to_write = buff;
1451 memcpy(a->uncompressed_buffer +
1452 MAX_DECMPFS_BLOCK_SIZE - a->block_remaining_bytes,
1453 buff, bytes_to_write);
1454 buffer_to_write = a->uncompressed_buffer;
1456 a->block_remaining_bytes -= bytes_to_write;
1457 a->file_remaining_bytes -= bytes_to_write;
1459 if (a->block_remaining_bytes == 0 || a->file_remaining_bytes == 0) {
1460 ret = hfs_drive_compressor(a, buffer_to_write,
1461 MAX_DECMPFS_BLOCK_SIZE - a->block_remaining_bytes);
1464 a->block_remaining_bytes = MAX_DECMPFS_BLOCK_SIZE;
1466 /* Ignore redundant bytes. */
1467 if (a->file_remaining_bytes == 0)
1468 return ((ssize_t)size);
1469 return (bytes_to_write);
1473 hfs_write_data_block(struct archive_write_disk *a, const char *buff,
1476 uint64_t start_size = size;
1477 ssize_t bytes_written = 0;
1478 ssize_t bytes_to_write;
1481 return (ARCHIVE_OK);
1483 if (a->filesize == 0 || a->fd < 0) {
1484 archive_set_error(&a->archive, 0,
1485 "Attempt to write to an empty file");
1486 return (ARCHIVE_WARN);
1489 /* If this write would run beyond the file size, truncate it. */
1490 if (a->filesize >= 0 && (int64_t)(a->offset + size) > a->filesize)
1491 start_size = size = (size_t)(a->filesize - a->offset);
1493 /* Write the data. */
1495 bytes_to_write = size;
1496 /* Seek if necessary to the specified offset. */
1497 if (a->offset < a->fd_offset) {
1498 /* Can't support backward move. */
1499 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1501 return (ARCHIVE_FATAL);
1502 } else if (a->offset > a->fd_offset) {
1503 int64_t skip = a->offset - a->fd_offset;
1504 char nullblock[1024];
1506 memset(nullblock, 0, sizeof(nullblock));
1508 if (skip > (int64_t)sizeof(nullblock))
1509 bytes_written = hfs_write_decmpfs_block(
1510 a, nullblock, sizeof(nullblock));
1512 bytes_written = hfs_write_decmpfs_block(
1513 a, nullblock, skip);
1514 if (bytes_written < 0) {
1515 archive_set_error(&a->archive, errno,
1517 return (ARCHIVE_WARN);
1519 skip -= bytes_written;
1522 a->fd_offset = a->offset;
1525 hfs_write_decmpfs_block(a, buff, bytes_to_write);
1526 if (bytes_written < 0)
1527 return (bytes_written);
1528 buff += bytes_written;
1529 size -= bytes_written;
1530 a->total_bytes_written += bytes_written;
1531 a->offset += bytes_written;
1532 a->fd_offset = a->offset;
1534 return (start_size - size);
1538 hfs_write_data_block(struct archive_write_disk *a, const char *buff,
1541 return (write_data_block(a, buff, size));
1546 _archive_write_disk_data_block(struct archive *_a,
1547 const void *buff, size_t size, int64_t offset)
1549 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1552 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1553 ARCHIVE_STATE_DATA, "archive_write_data_block");
1556 if (a->todo & TODO_HFS_COMPRESSION)
1557 r = hfs_write_data_block(a, buff, size);
1559 r = write_data_block(a, buff, size);
1562 if ((size_t)r < size) {
1563 archive_set_error(&a->archive, 0,
1564 "Too much data: Truncating file at %ju bytes",
1565 (uintmax_t)a->filesize);
1566 return (ARCHIVE_WARN);
1568 #if ARCHIVE_VERSION_NUMBER < 3999000
1569 return (ARCHIVE_OK);
1576 _archive_write_disk_data(struct archive *_a, const void *buff, size_t size)
1578 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1580 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1581 ARCHIVE_STATE_DATA, "archive_write_data");
1583 if (a->todo & TODO_HFS_COMPRESSION)
1584 return (hfs_write_data_block(a, buff, size));
1585 return (write_data_block(a, buff, size));
1589 _archive_write_disk_finish_entry(struct archive *_a)
1591 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1592 int ret = ARCHIVE_OK;
1594 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1595 ARCHIVE_STATE_HEADER | ARCHIVE_STATE_DATA,
1596 "archive_write_finish_entry");
1597 if (a->archive.state & ARCHIVE_STATE_HEADER)
1598 return (ARCHIVE_OK);
1599 archive_clear_error(&a->archive);
1601 /* Pad or truncate file to the right size. */
1603 /* There's no file. */
1604 } else if (a->filesize < 0) {
1605 /* File size is unknown, so we can't set the size. */
1606 } else if (a->fd_offset == a->filesize) {
1607 /* Last write ended at exactly the filesize; we're done. */
1608 /* Hopefully, this is the common case. */
1609 #if defined(__APPLE__) && defined(UF_COMPRESSED) && defined(HAVE_ZLIB_H)
1610 } else if (a->todo & TODO_HFS_COMPRESSION) {
1614 if (a->file_remaining_bytes)
1615 memset(null_d, 0, sizeof(null_d));
1616 while (a->file_remaining_bytes) {
1617 if (a->file_remaining_bytes > sizeof(null_d))
1618 r = hfs_write_data_block(
1619 a, null_d, sizeof(null_d));
1621 r = hfs_write_data_block(
1622 a, null_d, a->file_remaining_bytes);
1629 if (ftruncate(a->fd, a->filesize) == -1 &&
1631 archive_set_error(&a->archive, errno,
1632 "File size could not be restored");
1633 return (ARCHIVE_FAILED);
1637 * Not all platforms implement the XSI option to
1638 * extend files via ftruncate. Stat() the file again
1639 * to see what happened.
1642 if ((ret = lazy_stat(a)) != ARCHIVE_OK)
1644 /* We can use lseek()/write() to extend the file if
1645 * ftruncate didn't work or isn't available. */
1646 if (a->st.st_size < a->filesize) {
1647 const char nul = '\0';
1648 if (lseek(a->fd, a->filesize - 1, SEEK_SET) < 0) {
1649 archive_set_error(&a->archive, errno,
1651 return (ARCHIVE_FATAL);
1653 if (write(a->fd, &nul, 1) < 0) {
1654 archive_set_error(&a->archive, errno,
1655 "Write to restore size failed");
1656 return (ARCHIVE_FATAL);
1662 /* Restore metadata. */
1665 * This is specific to Mac OS X.
1666 * If the current file is an AppleDouble file, it should be
1667 * linked with the data fork file and remove it.
1669 if (a->todo & TODO_APPLEDOUBLE) {
1670 int r2 = fixup_appledouble(a, a->name);
1671 if (r2 == ARCHIVE_EOF) {
1672 /* The current file has been successfully linked
1673 * with the data fork file and removed. So there
1674 * is nothing to do on the current file. */
1675 goto finish_metadata;
1677 if (r2 < ret) ret = r2;
1681 * Look up the "real" UID only if we're going to need it.
1682 * TODO: the TODO_SGID condition can be dropped here, can't it?
1684 if (a->todo & (TODO_OWNER | TODO_SUID | TODO_SGID)) {
1685 a->uid = archive_write_disk_uid(&a->archive,
1686 archive_entry_uname(a->entry),
1687 archive_entry_uid(a->entry));
1689 /* Look up the "real" GID only if we're going to need it. */
1690 /* TODO: the TODO_SUID condition can be dropped here, can't it? */
1691 if (a->todo & (TODO_OWNER | TODO_SGID | TODO_SUID)) {
1692 a->gid = archive_write_disk_gid(&a->archive,
1693 archive_entry_gname(a->entry),
1694 archive_entry_gid(a->entry));
1698 * Restore ownership before set_mode tries to restore suid/sgid
1699 * bits. If we set the owner, we know what it is and can skip
1700 * a stat() call to examine the ownership of the file on disk.
1702 if (a->todo & TODO_OWNER) {
1703 int r2 = set_ownership(a);
1704 if (r2 < ret) ret = r2;
1708 * set_mode must precede ACLs on systems such as Solaris and
1709 * FreeBSD where setting the mode implicitly clears extended ACLs
1711 if (a->todo & TODO_MODE) {
1712 int r2 = set_mode(a, a->mode);
1713 if (r2 < ret) ret = r2;
1717 * Security-related extended attributes (such as
1718 * security.capability on Linux) have to be restored last,
1719 * since they're implicitly removed by other file changes.
1721 if (a->todo & TODO_XATTR) {
1722 int r2 = set_xattrs(a);
1723 if (r2 < ret) ret = r2;
1727 * Some flags prevent file modification; they must be restored after
1728 * file contents are written.
1730 if (a->todo & TODO_FFLAGS) {
1731 int r2 = set_fflags(a);
1732 if (r2 < ret) ret = r2;
1736 * Time must follow most other metadata;
1737 * otherwise atime will get changed.
1739 if (a->todo & TODO_TIMES) {
1740 int r2 = set_times_from_entry(a);
1741 if (r2 < ret) ret = r2;
1745 * Mac extended metadata includes ACLs.
1747 if (a->todo & TODO_MAC_METADATA) {
1748 const void *metadata;
1749 size_t metadata_size;
1750 metadata = archive_entry_mac_metadata(a->entry, &metadata_size);
1751 if (metadata != NULL && metadata_size > 0) {
1752 int r2 = set_mac_metadata(a, archive_entry_pathname(
1753 a->entry), metadata, metadata_size);
1754 if (r2 < ret) ret = r2;
1759 * ACLs must be restored after timestamps because there are
1760 * ACLs that prevent attribute changes (including time).
1762 if (a->todo & TODO_ACLS) {
1764 r2 = archive_write_disk_set_acls(&a->archive, a->fd,
1765 archive_entry_pathname(a->entry),
1766 archive_entry_acl(a->entry),
1767 archive_entry_mode(a->entry));
1768 if (r2 < ret) ret = r2;
1772 /* If there's an fd, we can close it now. */
1777 /* If there's an entry, we can release it now. */
1779 archive_entry_free(a->entry);
1782 a->archive.state = ARCHIVE_STATE_HEADER;
1787 archive_write_disk_set_group_lookup(struct archive *_a,
1789 la_int64_t (*lookup_gid)(void *private, const char *gname, la_int64_t gid),
1790 void (*cleanup_gid)(void *private))
1792 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1793 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1794 ARCHIVE_STATE_ANY, "archive_write_disk_set_group_lookup");
1796 if (a->cleanup_gid != NULL && a->lookup_gid_data != NULL)
1797 (a->cleanup_gid)(a->lookup_gid_data);
1799 a->lookup_gid = lookup_gid;
1800 a->cleanup_gid = cleanup_gid;
1801 a->lookup_gid_data = private_data;
1802 return (ARCHIVE_OK);
1806 archive_write_disk_set_user_lookup(struct archive *_a,
1808 int64_t (*lookup_uid)(void *private, const char *uname, int64_t uid),
1809 void (*cleanup_uid)(void *private))
1811 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1812 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1813 ARCHIVE_STATE_ANY, "archive_write_disk_set_user_lookup");
1815 if (a->cleanup_uid != NULL && a->lookup_uid_data != NULL)
1816 (a->cleanup_uid)(a->lookup_uid_data);
1818 a->lookup_uid = lookup_uid;
1819 a->cleanup_uid = cleanup_uid;
1820 a->lookup_uid_data = private_data;
1821 return (ARCHIVE_OK);
1825 archive_write_disk_gid(struct archive *_a, const char *name, la_int64_t id)
1827 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1828 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1829 ARCHIVE_STATE_ANY, "archive_write_disk_gid");
1831 return (a->lookup_gid)(a->lookup_gid_data, name, id);
1836 archive_write_disk_uid(struct archive *_a, const char *name, la_int64_t id)
1838 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1839 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1840 ARCHIVE_STATE_ANY, "archive_write_disk_uid");
1842 return (a->lookup_uid)(a->lookup_uid_data, name, id);
1847 * Create a new archive_write_disk object and initialize it with global state.
1850 archive_write_disk_new(void)
1852 struct archive_write_disk *a;
1854 a = (struct archive_write_disk *)calloc(1, sizeof(*a));
1857 a->archive.magic = ARCHIVE_WRITE_DISK_MAGIC;
1858 /* We're ready to write a header immediately. */
1859 a->archive.state = ARCHIVE_STATE_HEADER;
1860 a->archive.vtable = archive_write_disk_vtable();
1861 a->start_time = time(NULL);
1862 /* Query and restore the umask. */
1863 umask(a->user_umask = umask(0));
1865 a->user_uid = geteuid();
1866 #endif /* HAVE_GETEUID */
1867 if (archive_string_ensure(&a->path_safe, 512) == NULL) {
1872 a->decmpfs_compression_level = 5;
1874 return (&a->archive);
1879 * If pathname is longer than PATH_MAX, chdir to a suitable
1880 * intermediate dir and edit the path down to a shorter suffix. Note
1881 * that this routine never returns an error; if the chdir() attempt
1882 * fails for any reason, we just go ahead with the long pathname. The
1883 * object creation is likely to fail, but any error will get handled
1886 #if defined(HAVE_FCHDIR) && defined(PATH_MAX)
1888 edit_deep_directories(struct archive_write_disk *a)
1891 char *tail = a->name;
1893 /* If path is short, avoid the open() below. */
1894 if (strlen(tail) < PATH_MAX)
1897 /* Try to record our starting dir. */
1898 a->restore_pwd = open(".", O_RDONLY | O_BINARY | O_CLOEXEC);
1899 __archive_ensure_cloexec_flag(a->restore_pwd);
1900 if (a->restore_pwd < 0)
1903 /* As long as the path is too long... */
1904 while (strlen(tail) >= PATH_MAX) {
1905 /* Locate a dir prefix shorter than PATH_MAX. */
1906 tail += PATH_MAX - 8;
1907 while (tail > a->name && *tail != '/')
1909 /* Exit if we find a too-long path component. */
1910 if (tail <= a->name)
1912 /* Create the intermediate dir and chdir to it. */
1913 *tail = '\0'; /* Terminate dir portion */
1914 ret = create_dir(a, a->name);
1915 if (ret == ARCHIVE_OK && chdir(a->name) != 0)
1916 ret = ARCHIVE_FAILED;
1917 *tail = '/'; /* Restore the / we removed. */
1918 if (ret != ARCHIVE_OK)
1921 /* The chdir() succeeded; we've now shortened the path. */
1929 * The main restore function.
1932 restore_entry(struct archive_write_disk *a)
1934 int ret = ARCHIVE_OK, en;
1936 if (a->flags & ARCHIVE_EXTRACT_UNLINK && !S_ISDIR(a->mode)) {
1938 * TODO: Fix this. Apparently, there are platforms
1939 * that still allow root to hose the entire filesystem
1940 * by unlinking a dir. The S_ISDIR() test above
1941 * prevents us from using unlink() here if the new
1942 * object is a dir, but that doesn't mean the old
1943 * object isn't a dir.
1945 if (a->flags & ARCHIVE_EXTRACT_CLEAR_NOCHANGE_FFLAGS)
1946 (void)clear_nochange_fflags(a);
1947 if (unlink(a->name) == 0) {
1948 /* We removed it, reset cached stat. */
1950 } else if (errno == ENOENT) {
1951 /* File didn't exist, that's just as good. */
1952 } else if (rmdir(a->name) == 0) {
1953 /* It was a dir, but now it's gone. */
1956 /* We tried, but couldn't get rid of it. */
1957 archive_set_error(&a->archive, errno,
1958 "Could not unlink");
1959 return(ARCHIVE_FAILED);
1963 /* Try creating it first; if this fails, we'll try to recover. */
1964 en = create_filesystem_object(a);
1966 if ((en == ENOTDIR || en == ENOENT)
1967 && !(a->flags & ARCHIVE_EXTRACT_NO_AUTODIR)) {
1968 /* If the parent dir doesn't exist, try creating it. */
1969 create_parent_dir(a, a->name);
1970 /* Now try to create the object again. */
1971 en = create_filesystem_object(a);
1974 if ((en == ENOENT) && (archive_entry_hardlink(a->entry) != NULL)) {
1975 archive_set_error(&a->archive, en,
1976 "Hard-link target '%s' does not exist.",
1977 archive_entry_hardlink(a->entry));
1978 return (ARCHIVE_FAILED);
1981 if ((en == EISDIR || en == EEXIST)
1982 && (a->flags & ARCHIVE_EXTRACT_NO_OVERWRITE)) {
1983 /* If we're not overwriting, we're done. */
1984 if (S_ISDIR(a->mode)) {
1985 /* Don't overwrite any settings on existing directories. */
1988 archive_entry_unset_size(a->entry);
1989 return (ARCHIVE_OK);
1993 * Some platforms return EISDIR if you call
1994 * open(O_WRONLY | O_EXCL | O_CREAT) on a directory, some
1995 * return EEXIST. POSIX is ambiguous, requiring EISDIR
1996 * for open(O_WRONLY) on a dir and EEXIST for open(O_EXCL | O_CREAT)
1997 * on an existing item.
2000 /* A dir is in the way of a non-dir, rmdir it. */
2001 if (rmdir(a->name) != 0) {
2002 archive_set_error(&a->archive, errno,
2003 "Can't remove already-existing dir");
2004 return (ARCHIVE_FAILED);
2008 en = create_filesystem_object(a);
2009 } else if (en == EEXIST) {
2011 * We know something is in the way, but we don't know what;
2012 * we need to find out before we go any further.
2016 * The SECURE_SYMLINKS logic has already removed a
2017 * symlink to a dir if the client wants that. So
2018 * follow the symlink if we're creating a dir.
2020 if (S_ISDIR(a->mode))
2021 r = stat(a->name, &a->st);
2023 * If it's not a dir (or it's a broken symlink),
2024 * then don't follow it.
2026 if (r != 0 || !S_ISDIR(a->mode))
2027 r = lstat(a->name, &a->st);
2029 archive_set_error(&a->archive, errno,
2030 "Can't stat existing object");
2031 return (ARCHIVE_FAILED);
2035 * NO_OVERWRITE_NEWER doesn't apply to directories.
2037 if ((a->flags & ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER)
2038 && !S_ISDIR(a->st.st_mode)) {
2039 if (!older(&(a->st), a->entry)) {
2040 archive_entry_unset_size(a->entry);
2041 return (ARCHIVE_OK);
2045 /* If it's our archive, we're done. */
2046 if (a->skip_file_set &&
2047 a->st.st_dev == (dev_t)a->skip_file_dev &&
2048 a->st.st_ino == (ino_t)a->skip_file_ino) {
2049 archive_set_error(&a->archive, 0,
2050 "Refusing to overwrite archive");
2051 return (ARCHIVE_FAILED);
2054 if (!S_ISDIR(a->st.st_mode)) {
2055 /* A non-dir is in the way, unlink it. */
2056 if (a->flags & ARCHIVE_EXTRACT_CLEAR_NOCHANGE_FFLAGS)
2057 (void)clear_nochange_fflags(a);
2058 if (unlink(a->name) != 0) {
2059 archive_set_error(&a->archive, errno,
2060 "Can't unlink already-existing object");
2061 return (ARCHIVE_FAILED);
2065 en = create_filesystem_object(a);
2066 } else if (!S_ISDIR(a->mode)) {
2067 /* A dir is in the way of a non-dir, rmdir it. */
2068 if (a->flags & ARCHIVE_EXTRACT_CLEAR_NOCHANGE_FFLAGS)
2069 (void)clear_nochange_fflags(a);
2070 if (rmdir(a->name) != 0) {
2071 archive_set_error(&a->archive, errno,
2072 "Can't replace existing directory with non-directory");
2073 return (ARCHIVE_FAILED);
2076 en = create_filesystem_object(a);
2079 * There's a dir in the way of a dir. Don't
2080 * waste time with rmdir()/mkdir(), just fix
2081 * up the permissions on the existing dir.
2082 * Note that we don't change perms on existing
2083 * dirs unless _EXTRACT_PERM is specified.
2085 if ((a->mode != a->st.st_mode)
2086 && (a->todo & TODO_MODE_FORCE))
2087 a->deferred |= (a->todo & TODO_MODE);
2088 /* Ownership doesn't need deferred fixup. */
2089 en = 0; /* Forget the EEXIST. */
2094 /* Everything failed; give up here. */
2095 if ((&a->archive)->error == NULL)
2096 archive_set_error(&a->archive, en, "Can't create '%s'",
2098 return (ARCHIVE_FAILED);
2101 a->pst = NULL; /* Cached stat data no longer valid. */
2106 * Returns 0 if creation succeeds, or else returns errno value from
2107 * the failed system call. Note: This function should only ever perform
2108 * a single system call.
2111 create_filesystem_object(struct archive_write_disk *a)
2113 /* Create the entry. */
2114 const char *linkname;
2115 mode_t final_mode, mode;
2117 /* these for check_symlinks_fsobj */
2118 char *linkname_copy; /* non-const copy of linkname */
2120 struct archive_string error_string;
2123 /* We identify hard/symlinks according to the link names. */
2124 /* Since link(2) and symlink(2) don't handle modes, we're done here. */
2125 linkname = archive_entry_hardlink(a->entry);
2126 if (linkname != NULL) {
2130 archive_string_init(&error_string);
2131 linkname_copy = strdup(linkname);
2132 if (linkname_copy == NULL) {
2136 * TODO: consider using the cleaned-up path as the link
2139 r = cleanup_pathname_fsobj(linkname_copy, &error_number,
2140 &error_string, a->flags);
2141 if (r != ARCHIVE_OK) {
2142 archive_set_error(&a->archive, error_number, "%s",
2144 free(linkname_copy);
2145 archive_string_free(&error_string);
2147 * EPERM is more appropriate than error_number for our
2152 r = check_symlinks_fsobj(linkname_copy, &error_number,
2153 &error_string, a->flags);
2154 if (r != ARCHIVE_OK) {
2155 archive_set_error(&a->archive, error_number, "%s",
2157 free(linkname_copy);
2158 archive_string_free(&error_string);
2160 * EPERM is more appropriate than error_number for our
2165 free(linkname_copy);
2166 archive_string_free(&error_string);
2167 r = link(linkname, a->name) ? errno : 0;
2169 * New cpio and pax formats allow hardlink entries
2170 * to carry data, so we may have to open the file
2171 * for hardlink entries.
2173 * If the hardlink was successfully created and
2174 * the archive doesn't have carry data for it,
2175 * consider it to be non-authoritative for meta data.
2176 * This is consistent with GNU tar and BSD pax.
2177 * If the hardlink does carry data, let the last
2178 * archive entry decide ownership.
2180 if (r == 0 && a->filesize <= 0) {
2183 } else if (r == 0 && a->filesize > 0) {
2185 r = lstat(a->name, &st);
2187 r = stat(a->name, &st);
2191 else if ((st.st_mode & AE_IFMT) == AE_IFREG) {
2192 a->fd = open(a->name, O_WRONLY | O_TRUNC |
2193 O_BINARY | O_CLOEXEC | O_NOFOLLOW);
2194 __archive_ensure_cloexec_flag(a->fd);
2202 linkname = archive_entry_symlink(a->entry);
2203 if (linkname != NULL) {
2205 return symlink(linkname, a->name) ? errno : 0;
2212 * The remaining system calls all set permissions, so let's
2213 * try to take advantage of that to avoid an extra chmod()
2214 * call. (Recall that umask is set to zero right now!)
2217 /* Mode we want for the final restored object (w/o file type bits). */
2218 final_mode = a->mode & 07777;
2220 * The mode that will actually be restored in this step. Note
2221 * that SUID, SGID, etc, require additional work to ensure
2222 * security, so we never restore them at this point.
2224 mode = final_mode & 0777 & ~a->user_umask;
2226 switch (a->mode & AE_IFMT) {
2228 /* POSIX requires that we fall through here. */
2231 a->fd = open(a->name,
2232 O_WRONLY | O_CREAT | O_EXCL | O_BINARY | O_CLOEXEC, mode);
2233 __archive_ensure_cloexec_flag(a->fd);
2238 /* Note: we use AE_IFCHR for the case label, and
2239 * S_IFCHR for the mknod() call. This is correct. */
2240 r = mknod(a->name, mode | S_IFCHR,
2241 archive_entry_rdev(a->entry));
2244 /* TODO: Find a better way to warn about our inability
2245 * to restore a char device node. */
2247 #endif /* HAVE_MKNOD */
2250 r = mknod(a->name, mode | S_IFBLK,
2251 archive_entry_rdev(a->entry));
2254 /* TODO: Find a better way to warn about our inability
2255 * to restore a block device node. */
2257 #endif /* HAVE_MKNOD */
2259 mode = (mode | MINIMUM_DIR_MODE) & MAXIMUM_DIR_MODE;
2260 r = mkdir(a->name, mode);
2262 /* Defer setting dir times. */
2263 a->deferred |= (a->todo & TODO_TIMES);
2264 a->todo &= ~TODO_TIMES;
2265 /* Never use an immediate chmod(). */
2266 /* We can't avoid the chmod() entirely if EXTRACT_PERM
2267 * because of SysV SGID inheritance. */
2268 if ((mode != final_mode)
2269 || (a->flags & ARCHIVE_EXTRACT_PERM))
2270 a->deferred |= (a->todo & TODO_MODE);
2271 a->todo &= ~TODO_MODE;
2276 r = mkfifo(a->name, mode);
2279 /* TODO: Find a better way to warn about our inability
2280 * to restore a fifo. */
2282 #endif /* HAVE_MKFIFO */
2285 /* All the system calls above set errno on failure. */
2289 /* If we managed to set the final mode, we've avoided a chmod(). */
2290 if (mode == final_mode)
2291 a->todo &= ~TODO_MODE;
2296 * Cleanup function for archive_extract. Mostly, this involves processing
2297 * the fixup list, which is used to address a number of problems:
2298 * * Dir permissions might prevent us from restoring a file in that
2299 * dir, so we restore the dir with minimum 0700 permissions first,
2300 * then correct the mode at the end.
2301 * * Similarly, the act of restoring a file touches the directory
2302 * and changes the timestamp on the dir, so we have to touch-up dir
2303 * timestamps at the end as well.
2304 * * Some file flags can interfere with the restore by, for example,
2305 * preventing the creation of hardlinks to those files.
2306 * * Mac OS extended metadata includes ACLs, so must be deferred on dirs.
2308 * Note that tar/cpio do not require that archives be in a particular
2309 * order; there is no way to know when the last file has been restored
2310 * within a directory, so there's no way to optimize the memory usage
2311 * here by fixing up the directory any earlier than the
2314 * XXX TODO: Directory ACLs should be restored here, for the same
2315 * reason we set directory perms here. XXX
2318 _archive_write_disk_close(struct archive *_a)
2320 struct archive_write_disk *a = (struct archive_write_disk *)_a;
2321 struct fixup_entry *next, *p;
2324 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
2325 ARCHIVE_STATE_HEADER | ARCHIVE_STATE_DATA,
2326 "archive_write_disk_close");
2327 ret = _archive_write_disk_finish_entry(&a->archive);
2329 /* Sort dir list so directories are fixed up in depth-first order. */
2330 p = sort_dir_list(a->fixup_list);
2333 a->pst = NULL; /* Mark stat cache as out-of-date. */
2334 if (p->fixup & TODO_TIMES) {
2335 set_times(a, -1, p->mode, p->name,
2336 p->atime, p->atime_nanos,
2337 p->birthtime, p->birthtime_nanos,
2338 p->mtime, p->mtime_nanos,
2339 p->ctime, p->ctime_nanos);
2341 if (p->fixup & TODO_MODE_BASE)
2342 chmod(p->name, p->mode);
2343 if (p->fixup & TODO_ACLS)
2344 archive_write_disk_set_acls(&a->archive, -1, p->name,
2346 if (p->fixup & TODO_FFLAGS)
2347 set_fflags_platform(a, -1, p->name,
2348 p->mode, p->fflags_set, 0);
2349 if (p->fixup & TODO_MAC_METADATA)
2350 set_mac_metadata(a, p->name, p->mac_metadata,
2351 p->mac_metadata_size);
2353 archive_acl_clear(&p->acl);
2354 free(p->mac_metadata);
2359 a->fixup_list = NULL;
2364 _archive_write_disk_free(struct archive *_a)
2366 struct archive_write_disk *a;
2369 return (ARCHIVE_OK);
2370 archive_check_magic(_a, ARCHIVE_WRITE_DISK_MAGIC,
2371 ARCHIVE_STATE_ANY | ARCHIVE_STATE_FATAL, "archive_write_disk_free");
2372 a = (struct archive_write_disk *)_a;
2373 ret = _archive_write_disk_close(&a->archive);
2374 archive_write_disk_set_group_lookup(&a->archive, NULL, NULL, NULL);
2375 archive_write_disk_set_user_lookup(&a->archive, NULL, NULL, NULL);
2377 archive_entry_free(a->entry);
2378 archive_string_free(&a->_name_data);
2379 archive_string_free(&a->archive.error_string);
2380 archive_string_free(&a->path_safe);
2381 a->archive.magic = 0;
2382 __archive_clean(&a->archive);
2383 free(a->decmpfs_header_p);
2384 free(a->resource_fork);
2385 free(a->compressed_buffer);
2386 free(a->uncompressed_buffer);
2387 #if defined(__APPLE__) && defined(UF_COMPRESSED) && defined(HAVE_SYS_XATTR_H)\
2388 && defined(HAVE_ZLIB_H)
2389 if (a->stream_valid) {
2390 switch (deflateEnd(&a->stream)) {
2394 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
2395 "Failed to clean up compressor");
2396 ret = ARCHIVE_FATAL;
2406 * Simple O(n log n) merge sort to order the fixup list. In
2407 * particular, we want to restore dir timestamps depth-first.
2409 static struct fixup_entry *
2410 sort_dir_list(struct fixup_entry *p)
2412 struct fixup_entry *a, *b, *t;
2416 /* A one-item list is already sorted. */
2417 if (p->next == NULL)
2420 /* Step 1: split the list. */
2424 /* Step a twice, t once. */
2430 /* Now, t is at the mid-point, so break the list here. */
2435 /* Step 2: Recursively sort the two sub-lists. */
2436 a = sort_dir_list(a);
2437 b = sort_dir_list(b);
2439 /* Step 3: Merge the returned lists. */
2440 /* Pick the first element for the merged list. */
2441 if (strcmp(a->name, b->name) > 0) {
2449 /* Always put the later element on the list first. */
2450 while (a != NULL && b != NULL) {
2451 if (strcmp(a->name, b->name) > 0) {
2461 /* Only one list is non-empty, so just splice it on. */
2471 * Returns a new, initialized fixup entry.
2473 * TODO: Reduce the memory requirements for this list by using a tree
2474 * structure rather than a simple list of names.
2476 static struct fixup_entry *
2477 new_fixup(struct archive_write_disk *a, const char *pathname)
2479 struct fixup_entry *fe;
2481 fe = (struct fixup_entry *)calloc(1, sizeof(struct fixup_entry));
2483 archive_set_error(&a->archive, ENOMEM,
2484 "Can't allocate memory for a fixup");
2487 fe->next = a->fixup_list;
2490 fe->name = strdup(pathname);
2495 * Returns a fixup structure for the current entry.
2497 static struct fixup_entry *
2498 current_fixup(struct archive_write_disk *a, const char *pathname)
2500 if (a->current_fixup == NULL)
2501 a->current_fixup = new_fixup(a, pathname);
2502 return (a->current_fixup);
2505 /* Error helper for new *_fsobj functions */
2507 fsobj_error(int *a_eno, struct archive_string *a_estr,
2508 int err, const char *errstr, const char *path)
2513 archive_string_sprintf(a_estr, "%s%s", errstr, path);
2517 * TODO: Someday, integrate this with the deep dir support; they both
2518 * scan the path and both can be optimized by comparing against other
2521 /* TODO: Extend this to support symlinks on Windows Vista and later. */
2524 * Checks the given path to see if any elements along it are symlinks. Returns
2525 * ARCHIVE_OK if there are none, otherwise puts an error in errmsg.
2528 check_symlinks_fsobj(char *path, int *a_eno, struct archive_string *a_estr,
2531 #if !defined(HAVE_LSTAT)
2532 /* Platform doesn't have lstat, so we can't look for symlinks. */
2533 (void)path; /* UNUSED */
2534 (void)error_number; /* UNUSED */
2535 (void)error_string; /* UNUSED */
2536 (void)flags; /* UNUSED */
2537 return (ARCHIVE_OK);
2539 int res = ARCHIVE_OK;
2548 /* Nothing to do here if name is empty */
2550 return (ARCHIVE_OK);
2553 * Guard against symlink tricks. Reject any archive entry whose
2554 * destination would be altered by a symlink.
2556 * Walk the filename in chunks separated by '/'. For each segment:
2557 * - if it doesn't exist, continue
2558 * - if it's symlink, abort or remove it
2559 * - if it's a directory and it's not the last chunk, cd into it
2561 * head points to the current (relative) path
2562 * tail points to the temporary \0 terminating the segment we're
2563 * currently examining
2564 * c holds what used to be in *tail
2565 * last is 1 if this is the last tail
2567 restore_pwd = open(".", O_RDONLY | O_BINARY | O_CLOEXEC);
2568 __archive_ensure_cloexec_flag(restore_pwd);
2569 if (restore_pwd < 0)
2570 return (ARCHIVE_FATAL);
2574 /* TODO: reintroduce a safe cache here? */
2575 /* Skip the root directory if the path is absolute. */
2576 if(tail == path && tail[0] == '/')
2578 /* Keep going until we've checked the entire name.
2579 * head, tail, path all alias the same string, which is
2580 * temporarily zeroed at tail, so be careful restoring the
2581 * stashed (c=tail[0]) for error messages.
2582 * Exiting the loop with break is okay; continue is not.
2586 * Skip the separator we just consumed, plus any adjacent ones
2588 while (*tail == '/')
2590 /* Skip the next path element. */
2591 while (*tail != '\0' && *tail != '/')
2593 /* is this the last path component? */
2594 last = (tail[0] == '\0') || (tail[0] == '/' && tail[1] == '\0');
2595 /* temporarily truncate the string here */
2598 /* Check that we haven't hit a symlink. */
2599 r = lstat(head, &st);
2602 /* We've hit a dir that doesn't exist; stop now. */
2603 if (errno == ENOENT) {
2607 * Treat any other error as fatal - best to be
2609 * Note: This effectively disables deep
2610 * directory support when security checks are
2611 * enabled. Otherwise, very long pathnames that
2612 * trigger an error here could evade the
2614 * TODO: We could do better, but it would
2615 * probably require merging the symlink checks
2616 * with the deep-directory editing.
2618 fsobj_error(a_eno, a_estr, errno,
2619 "Could not stat ", path);
2620 res = ARCHIVE_FAILED;
2623 } else if (S_ISDIR(st.st_mode)) {
2625 if (chdir(head) != 0) {
2627 fsobj_error(a_eno, a_estr, errno,
2628 "Could not chdir ", path);
2629 res = (ARCHIVE_FATAL);
2632 /* Our view is now from inside this dir: */
2635 } else if (S_ISLNK(st.st_mode)) {
2638 * Last element is symlink; remove it
2639 * so we can overwrite it with the
2640 * item being extracted.
2644 fsobj_error(a_eno, a_estr, errno,
2645 "Could not remove symlink ",
2647 res = ARCHIVE_FAILED;
2651 * Even if we did remove it, a warning
2652 * is in order. The warning is silly,
2653 * though, if we're just replacing one
2654 * symlink with another symlink.
2658 * FIXME: not sure how important this is to
2662 if (!S_ISLNK(path)) {
2663 fsobj_error(a_eno, a_estr, 0,
2664 "Removing symlink ", path);
2667 /* Symlink gone. No more problem! */
2670 } else if (flags & ARCHIVE_EXTRACT_UNLINK) {
2671 /* User asked us to remove problems. */
2672 if (unlink(head) != 0) {
2674 fsobj_error(a_eno, a_estr, 0,
2675 "Cannot remove intervening "
2677 res = ARCHIVE_FAILED;
2682 ARCHIVE_EXTRACT_SECURE_SYMLINKS) == 0) {
2684 * We are not the last element and we want to
2685 * follow symlinks if they are a directory.
2687 * This is needed to extract hardlinks over
2690 r = stat(head, &st);
2693 if (errno == ENOENT) {
2696 fsobj_error(a_eno, a_estr,
2698 "Could not stat ", path);
2699 res = (ARCHIVE_FAILED);
2702 } else if (S_ISDIR(st.st_mode)) {
2703 if (chdir(head) != 0) {
2705 fsobj_error(a_eno, a_estr,
2707 "Could not chdir ", path);
2708 res = (ARCHIVE_FATAL);
2712 * Our view is now from inside
2718 fsobj_error(a_eno, a_estr, 0,
2719 "Cannot extract through "
2721 res = ARCHIVE_FAILED;
2726 fsobj_error(a_eno, a_estr, 0,
2727 "Cannot extract through symlink ", path);
2728 res = ARCHIVE_FAILED;
2732 /* be sure to always maintain this */
2734 if (tail[0] != '\0')
2735 tail++; /* Advance to the next segment. */
2737 /* Catches loop exits via break */
2740 /* If we changed directory above, restore it here. */
2741 if (restore_pwd >= 0) {
2742 r = fchdir(restore_pwd);
2744 fsobj_error(a_eno, a_estr, errno,
2745 "chdir() failure", "");
2750 res = (ARCHIVE_FATAL);
2754 /* TODO: reintroduce a safe cache here? */
2760 * Check a->name for symlinks, returning ARCHIVE_OK if its clean, otherwise
2761 * calls archive_set_error and returns ARCHIVE_{FATAL,FAILED}
2764 check_symlinks(struct archive_write_disk *a)
2766 struct archive_string error_string;
2769 archive_string_init(&error_string);
2770 rc = check_symlinks_fsobj(a->name, &error_number, &error_string,
2772 if (rc != ARCHIVE_OK) {
2773 archive_set_error(&a->archive, error_number, "%s",
2776 archive_string_free(&error_string);
2777 a->pst = NULL; /* to be safe */
2782 #if defined(__CYGWIN__)
2784 * 1. Convert a path separator from '\' to '/' .
2785 * We shouldn't check multibyte character directly because some
2786 * character-set have been using the '\' character for a part of
2787 * its multibyte character code.
2788 * 2. Replace unusable characters in Windows with underscore('_').
2789 * See also : http://msdn.microsoft.com/en-us/library/aa365247.aspx
2792 cleanup_pathname_win(char *path)
2797 int mb, complete, utf8;
2802 utf8 = (strcmp(nl_langinfo(CODESET), "UTF-8") == 0)? 1: 0;
2803 for (p = path; *p != '\0'; p++) {
2806 /* If previous byte is smaller than 128,
2807 * this is not second byte of multibyte characters,
2808 * so we can replace '\' with '/'. */
2812 complete = 0;/* uncompleted. */
2813 } else if (*(unsigned char *)p > 127)
2817 /* Rewrite the path name if its next character is unusable. */
2818 if (*p == ':' || *p == '*' || *p == '?' || *p == '"' ||
2819 *p == '<' || *p == '>' || *p == '|')
2826 * Convert path separator in wide-character.
2829 while (*p != '\0' && alen) {
2830 l = mbtowc(&wc, p, alen);
2831 if (l == (size_t)-1) {
2832 while (*p != '\0') {
2839 if (l == 1 && wc == L'\\')
2848 * Canonicalize the pathname. In particular, this strips duplicate
2849 * '/' characters, '.' elements, and trailing '/'. It also raises an
2850 * error for an empty path, a trailing '..', (if _SECURE_NODOTDOT is
2851 * set) any '..' in the path or (if ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS
2852 * is set) if the path is absolute.
2855 cleanup_pathname_fsobj(char *path, int *a_eno, struct archive_string *a_estr,
2859 char separator = '\0';
2863 fsobj_error(a_eno, a_estr, ARCHIVE_ERRNO_MISC,
2864 "Invalid empty ", "pathname");
2865 return (ARCHIVE_FAILED);
2868 #if defined(__CYGWIN__)
2869 cleanup_pathname_win(path);
2871 /* Skip leading '/'. */
2873 if (flags & ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS) {
2874 fsobj_error(a_eno, a_estr, ARCHIVE_ERRNO_MISC,
2875 "Path is ", "absolute");
2876 return (ARCHIVE_FAILED);
2882 /* Scan the pathname one element at a time. */
2884 /* src points to first char after '/' */
2885 if (src[0] == '\0') {
2887 } else if (src[0] == '/') {
2888 /* Found '//', ignore second one. */
2891 } else if (src[0] == '.') {
2892 if (src[1] == '\0') {
2893 /* Ignore trailing '.' */
2895 } else if (src[1] == '/') {
2899 } else if (src[1] == '.') {
2900 if (src[2] == '/' || src[2] == '\0') {
2901 /* Conditionally warn about '..' */
2903 & ARCHIVE_EXTRACT_SECURE_NODOTDOT) {
2904 fsobj_error(a_eno, a_estr,
2906 "Path contains ", "'..'");
2907 return (ARCHIVE_FAILED);
2911 * Note: Under no circumstances do we
2912 * remove '..' elements. In
2913 * particular, restoring
2914 * '/foo/../bar/' should create the
2915 * 'foo' dir as a side-effect.
2920 /* Copy current element, including leading '/'. */
2923 while (*src != '\0' && *src != '/') {
2930 /* Skip '/' separator. */
2934 * We've just copied zero or more path elements, not including the
2939 * Nothing got copied. The path must have been something
2940 * like '.' or '/' or './' or '/././././/./'.
2947 /* Terminate the result. */
2949 return (ARCHIVE_OK);
2953 cleanup_pathname(struct archive_write_disk *a)
2955 struct archive_string error_string;
2958 archive_string_init(&error_string);
2959 rc = cleanup_pathname_fsobj(a->name, &error_number, &error_string,
2961 if (rc != ARCHIVE_OK) {
2962 archive_set_error(&a->archive, error_number, "%s",
2965 archive_string_free(&error_string);
2970 * Create the parent directory of the specified path, assuming path
2971 * is already in mutable storage.
2974 create_parent_dir(struct archive_write_disk *a, char *path)
2979 /* Remove tail element to obtain parent name. */
2980 slash = strrchr(path, '/');
2982 return (ARCHIVE_OK);
2984 r = create_dir(a, path);
2990 * Create the specified dir, recursing to create parents as necessary.
2992 * Returns ARCHIVE_OK if the path exists when we're done here.
2993 * Otherwise, returns ARCHIVE_FAILED.
2994 * Assumes path is in mutable storage; path is unchanged on exit.
2997 create_dir(struct archive_write_disk *a, char *path)
3000 struct fixup_entry *le;
3002 mode_t mode_final, mode;
3005 /* Check for special names and just skip them. */
3006 slash = strrchr(path, '/');
3012 if (base[0] == '\0' ||
3013 (base[0] == '.' && base[1] == '\0') ||
3014 (base[0] == '.' && base[1] == '.' && base[2] == '\0')) {
3015 /* Don't bother trying to create null path, '.', or '..'. */
3016 if (slash != NULL) {
3018 r = create_dir(a, path);
3022 return (ARCHIVE_OK);
3026 * Yes, this should be stat() and not lstat(). Using lstat()
3027 * here loses the ability to extract through symlinks. Also note
3028 * that this should not use the a->st cache.
3030 if (stat(path, &st) == 0) {
3031 if (S_ISDIR(st.st_mode))
3032 return (ARCHIVE_OK);
3033 if ((a->flags & ARCHIVE_EXTRACT_NO_OVERWRITE)) {
3034 archive_set_error(&a->archive, EEXIST,
3035 "Can't create directory '%s'", path);
3036 return (ARCHIVE_FAILED);
3038 if (unlink(path) != 0) {
3039 archive_set_error(&a->archive, errno,
3040 "Can't create directory '%s': "
3041 "Conflicting file cannot be removed",
3043 return (ARCHIVE_FAILED);
3045 } else if (errno != ENOENT && errno != ENOTDIR) {
3047 archive_set_error(&a->archive, errno,
3048 "Can't test directory '%s'", path);
3049 return (ARCHIVE_FAILED);
3050 } else if (slash != NULL) {
3052 r = create_dir(a, path);
3054 if (r != ARCHIVE_OK)
3059 * Mode we want for the final restored directory. Per POSIX,
3060 * implicitly-created dirs must be created obeying the umask.
3061 * There's no mention whether this is different for privileged
3062 * restores (which the rest of this code handles by pretending
3063 * umask=0). I've chosen here to always obey the user's umask for
3064 * implicit dirs, even if _EXTRACT_PERM was specified.
3066 mode_final = DEFAULT_DIR_MODE & ~a->user_umask;
3067 /* Mode we want on disk during the restore process. */
3069 mode |= MINIMUM_DIR_MODE;
3070 mode &= MAXIMUM_DIR_MODE;
3071 if (mkdir(path, mode) == 0) {
3072 if (mode != mode_final) {
3073 le = new_fixup(a, path);
3075 return (ARCHIVE_FATAL);
3076 le->fixup |=TODO_MODE_BASE;
3077 le->mode = mode_final;
3079 return (ARCHIVE_OK);
3083 * Without the following check, a/b/../b/c/d fails at the
3084 * second visit to 'b', so 'd' can't be created. Note that we
3085 * don't add it to the fixup list here, as it's already been
3088 if (stat(path, &st) == 0 && S_ISDIR(st.st_mode))
3089 return (ARCHIVE_OK);
3091 archive_set_error(&a->archive, errno, "Failed to create dir '%s'",
3093 return (ARCHIVE_FAILED);
3097 * Note: Although we can skip setting the user id if the desired user
3098 * id matches the current user, we cannot skip setting the group, as
3099 * many systems set the gid based on the containing directory. So
3100 * we have to perform a chown syscall if we want to set the SGID
3101 * bit. (The alternative is to stat() and then possibly chown(); it's
3102 * more efficient to skip the stat() and just always chown().) Note
3103 * that a successful chown() here clears the TODO_SGID_CHECK bit, which
3104 * allows set_mode to skip the stat() check for the GID.
3107 set_ownership(struct archive_write_disk *a)
3110 /* unfortunately, on win32 there is no 'root' user with uid 0,
3111 so we just have to try the chown and see if it works */
3113 /* If we know we can't change it, don't bother trying. */
3114 if (a->user_uid != 0 && a->user_uid != a->uid) {
3115 archive_set_error(&a->archive, errno,
3116 "Can't set UID=%jd", (intmax_t)a->uid);
3117 return (ARCHIVE_WARN);
3122 /* If we have an fd, we can avoid a race. */
3123 if (a->fd >= 0 && fchown(a->fd, a->uid, a->gid) == 0) {
3124 /* We've set owner and know uid/gid are correct. */
3125 a->todo &= ~(TODO_OWNER | TODO_SGID_CHECK | TODO_SUID_CHECK);
3126 return (ARCHIVE_OK);
3130 /* We prefer lchown() but will use chown() if that's all we have. */
3131 /* Of course, if we have neither, this will always fail. */
3133 if (lchown(a->name, a->uid, a->gid) == 0) {
3134 /* We've set owner and know uid/gid are correct. */
3135 a->todo &= ~(TODO_OWNER | TODO_SGID_CHECK | TODO_SUID_CHECK);
3136 return (ARCHIVE_OK);
3139 if (!S_ISLNK(a->mode) && chown(a->name, a->uid, a->gid) == 0) {
3140 /* We've set owner and know uid/gid are correct. */
3141 a->todo &= ~(TODO_OWNER | TODO_SGID_CHECK | TODO_SUID_CHECK);
3142 return (ARCHIVE_OK);
3146 archive_set_error(&a->archive, errno,
3147 "Can't set user=%jd/group=%jd for %s",
3148 (intmax_t)a->uid, (intmax_t)a->gid, a->name);
3149 return (ARCHIVE_WARN);
3153 * Note: Returns 0 on success, non-zero on failure.
3156 set_time(int fd, int mode, const char *name,
3157 time_t atime, long atime_nsec,
3158 time_t mtime, long mtime_nsec)
3160 /* Select the best implementation for this platform. */
3161 #if defined(HAVE_UTIMENSAT) && defined(HAVE_FUTIMENS)
3163 * utimensat() and futimens() are defined in
3164 * POSIX.1-2008. They support ns resolution and setting times
3165 * on fds and symlinks.
3167 struct timespec ts[2];
3168 (void)mode; /* UNUSED */
3169 if (atime == (time_t)-1) {
3171 ts[0].tv_nsec = UTIME_OMIT;
3173 ts[0].tv_sec = atime;
3174 ts[0].tv_nsec = atime_nsec;
3176 if (mtime == (time_t)-1) {
3178 ts[1].tv_nsec = UTIME_OMIT;
3180 ts[1].tv_sec = mtime;
3181 ts[1].tv_nsec = mtime_nsec;
3184 return futimens(fd, ts);
3185 return utimensat(AT_FDCWD, name, ts, AT_SYMLINK_NOFOLLOW);
3189 * The utimes()-family functions support µs-resolution and
3190 * setting times fds and symlinks. utimes() is documented as
3191 * LEGACY by POSIX, futimes() and lutimes() are not described
3194 struct timeval times[2];
3196 times[0].tv_sec = atime;
3197 times[0].tv_usec = atime_nsec / 1000;
3198 times[1].tv_sec = mtime;
3199 times[1].tv_usec = mtime_nsec / 1000;
3203 return (futimes(fd, times));
3205 (void)fd; /* UNUSED */
3208 (void)mode; /* UNUSED */
3209 return (lutimes(name, times));
3213 return (utimes(name, times));
3216 #elif defined(HAVE_UTIME)
3218 * utime() is POSIX-standard but only supports 1s resolution and
3219 * does not support fds or symlinks.
3221 struct utimbuf times;
3222 (void)fd; /* UNUSED */
3223 (void)name; /* UNUSED */
3224 (void)atime_nsec; /* UNUSED */
3225 (void)mtime_nsec; /* UNUSED */
3226 times.actime = atime;
3227 times.modtime = mtime;
3229 return (ARCHIVE_OK);
3230 return (utime(name, ×));
3234 * We don't know how to set the time on this platform.
3236 (void)fd; /* UNUSED */
3237 (void)mode; /* UNUSED */
3238 (void)name; /* UNUSED */
3239 (void)atime_nsec; /* UNUSED */
3240 (void)mtime_nsec; /* UNUSED */
3241 return (ARCHIVE_WARN);
3247 set_time_tru64(int fd, int mode, const char *name,
3248 time_t atime, long atime_nsec,
3249 time_t mtime, long mtime_nsec,
3250 time_t ctime, long ctime_nsec)
3252 struct attr_timbuf tstamp;
3253 tstamp.atime.tv_sec = atime;
3254 tstamp.mtime.tv_sec = mtime;
3255 tstamp.ctime.tv_sec = ctime;
3256 #if defined (__hpux) && defined (__ia64)
3257 tstamp.atime.tv_nsec = atime_nsec;
3258 tstamp.mtime.tv_nsec = mtime_nsec;
3259 tstamp.ctime.tv_nsec = ctime_nsec;
3261 tstamp.atime.tv_usec = atime_nsec / 1000;
3262 tstamp.mtime.tv_usec = mtime_nsec / 1000;
3263 tstamp.ctime.tv_usec = ctime_nsec / 1000;
3265 return (fcntl(fd,F_SETTIMES,&tstamp));
3267 #endif /* F_SETTIMES */
3270 set_times(struct archive_write_disk *a,
3271 int fd, int mode, const char *name,
3272 time_t atime, long atime_nanos,
3273 time_t birthtime, long birthtime_nanos,
3274 time_t mtime, long mtime_nanos,
3275 time_t cctime, long ctime_nanos)
3277 /* Note: set_time doesn't use libarchive return conventions!
3278 * It uses syscall conventions. So 0 here instead of ARCHIVE_OK. */
3283 * on Tru64 try own fcntl first which can restore even the
3284 * ctime, fall back to default code path below if it fails
3285 * or if we are not running as root
3287 if (a->user_uid == 0 &&
3288 set_time_tru64(fd, mode, name,
3289 atime, atime_nanos, mtime,
3290 mtime_nanos, cctime, ctime_nanos) == 0) {
3291 return (ARCHIVE_OK);
3294 (void)cctime; /* UNUSED */
3295 (void)ctime_nanos; /* UNUSED */
3298 #ifdef HAVE_STRUCT_STAT_ST_BIRTHTIME
3300 * If you have struct stat.st_birthtime, we assume BSD
3301 * birthtime semantics, in which {f,l,}utimes() updates
3302 * birthtime to earliest mtime. So we set the time twice,
3303 * first using the birthtime, then using the mtime. If
3304 * birthtime == mtime, this isn't necessary, so we skip it.
3305 * If birthtime > mtime, then this won't work, so we skip it.
3307 if (birthtime < mtime
3308 || (birthtime == mtime && birthtime_nanos < mtime_nanos))
3309 r1 = set_time(fd, mode, name,
3311 birthtime, birthtime_nanos);
3313 (void)birthtime; /* UNUSED */
3314 (void)birthtime_nanos; /* UNUSED */
3316 r2 = set_time(fd, mode, name,
3318 mtime, mtime_nanos);
3319 if (r1 != 0 || r2 != 0) {
3320 archive_set_error(&a->archive, errno,
3321 "Can't restore time");
3322 return (ARCHIVE_WARN);
3324 return (ARCHIVE_OK);
3328 set_times_from_entry(struct archive_write_disk *a)
3330 time_t atime, birthtime, mtime, cctime;
3331 long atime_nsec, birthtime_nsec, mtime_nsec, ctime_nsec;
3333 /* Suitable defaults. */
3334 atime = birthtime = mtime = cctime = a->start_time;
3335 atime_nsec = birthtime_nsec = mtime_nsec = ctime_nsec = 0;
3337 /* If no time was provided, we're done. */
3338 if (!archive_entry_atime_is_set(a->entry)
3339 #if HAVE_STRUCT_STAT_ST_BIRTHTIME
3340 && !archive_entry_birthtime_is_set(a->entry)
3342 && !archive_entry_mtime_is_set(a->entry))
3343 return (ARCHIVE_OK);
3345 if (archive_entry_atime_is_set(a->entry)) {
3346 atime = archive_entry_atime(a->entry);
3347 atime_nsec = archive_entry_atime_nsec(a->entry);
3349 if (archive_entry_birthtime_is_set(a->entry)) {
3350 birthtime = archive_entry_birthtime(a->entry);
3351 birthtime_nsec = archive_entry_birthtime_nsec(a->entry);
3353 if (archive_entry_mtime_is_set(a->entry)) {
3354 mtime = archive_entry_mtime(a->entry);
3355 mtime_nsec = archive_entry_mtime_nsec(a->entry);
3357 if (archive_entry_ctime_is_set(a->entry)) {
3358 cctime = archive_entry_ctime(a->entry);
3359 ctime_nsec = archive_entry_ctime_nsec(a->entry);
3362 return set_times(a, a->fd, a->mode, a->name,
3364 birthtime, birthtime_nsec,
3366 cctime, ctime_nsec);
3370 set_mode(struct archive_write_disk *a, int mode)
3373 mode &= 07777; /* Strip off file type bits. */
3375 if (a->todo & TODO_SGID_CHECK) {
3377 * If we don't know the GID is right, we must stat()
3378 * to verify it. We can't just check the GID of this
3379 * process, since systems sometimes set GID from
3380 * the enclosing dir or based on ACLs.
3382 if ((r = lazy_stat(a)) != ARCHIVE_OK)
3384 if (a->pst->st_gid != a->gid) {
3386 if (a->flags & ARCHIVE_EXTRACT_OWNER) {
3388 * This is only an error if you
3389 * requested owner restore. If you
3390 * didn't, we'll try to restore
3391 * sgid/suid, but won't consider it a
3392 * problem if we can't.
3394 archive_set_error(&a->archive, -1,
3395 "Can't restore SGID bit");
3399 /* While we're here, double-check the UID. */
3400 if (a->pst->st_uid != a->uid
3401 && (a->todo & TODO_SUID)) {
3403 if (a->flags & ARCHIVE_EXTRACT_OWNER) {
3404 archive_set_error(&a->archive, -1,
3405 "Can't restore SUID bit");
3409 a->todo &= ~TODO_SGID_CHECK;
3410 a->todo &= ~TODO_SUID_CHECK;
3411 } else if (a->todo & TODO_SUID_CHECK) {
3413 * If we don't know the UID is right, we can just check
3414 * the user, since all systems set the file UID from
3417 if (a->user_uid != a->uid) {
3419 if (a->flags & ARCHIVE_EXTRACT_OWNER) {
3420 archive_set_error(&a->archive, -1,
3421 "Can't make file SUID");
3425 a->todo &= ~TODO_SUID_CHECK;
3428 if (S_ISLNK(a->mode)) {
3431 * If this is a symlink, use lchmod(). If the
3432 * platform doesn't support lchmod(), just skip it. A
3433 * platform that doesn't provide a way to set
3434 * permissions on symlinks probably ignores
3435 * permissions on symlinks, so a failure here has no
3438 if (lchmod(a->name, mode) != 0) {
3442 #if ENOTSUP != EOPNOTSUPP
3446 * if lchmod is defined but the platform
3447 * doesn't support it, silently ignore
3452 archive_set_error(&a->archive, errno,
3453 "Can't set permissions to 0%o", (int)mode);
3458 } else if (!S_ISDIR(a->mode)) {
3460 * If it's not a symlink and not a dir, then use
3461 * fchmod() or chmod(), depending on whether we have
3462 * an fd. Dirs get their perms set during the
3463 * post-extract fixup, which is handled elsewhere.
3467 if (fchmod(a->fd, mode) != 0) {
3468 archive_set_error(&a->archive, errno,
3469 "Can't set permissions to 0%o", (int)mode);
3474 /* If this platform lacks fchmod(), then
3475 * we'll just use chmod(). */
3476 if (chmod(a->name, mode) != 0) {
3477 archive_set_error(&a->archive, errno,
3478 "Can't set permissions to 0%o", (int)mode);
3486 set_fflags(struct archive_write_disk *a)
3488 struct fixup_entry *le;
3489 unsigned long set, clear;
3492 mode_t mode = archive_entry_mode(a->entry);
3495 * Make 'critical_flags' hold all file flags that can't be
3496 * immediately restored. For example, on BSD systems,
3497 * SF_IMMUTABLE prevents hardlinks from being created, so
3498 * should not be set until after any hardlinks are created. To
3499 * preserve some semblance of portability, this uses #ifdef
3500 * extensively. Ugly, but it works.
3502 * Yes, Virginia, this does create a security race. It's mitigated
3503 * somewhat by the practice of creating dirs 0700 until the extract
3504 * is done, but it would be nice if we could do more than that.
3505 * People restoring critical file systems should be wary of
3506 * other programs that might try to muck with files as they're
3509 /* Hopefully, the compiler will optimize this mess into a constant. */
3512 critical_flags |= SF_IMMUTABLE;
3515 critical_flags |= UF_IMMUTABLE;
3518 critical_flags |= SF_APPEND;
3521 critical_flags |= UF_APPEND;
3523 #if defined(FS_APPEND_FL)
3524 critical_flags |= FS_APPEND_FL;
3525 #elif defined(EXT2_APPEND_FL)
3526 critical_flags |= EXT2_APPEND_FL;
3528 #if defined(FS_IMMUTABLE_FL)
3529 critical_flags |= FS_IMMUTABLE_FL;
3530 #elif defined(EXT2_IMMUTABLE_FL)
3531 critical_flags |= EXT2_IMMUTABLE_FL;
3533 #ifdef FS_JOURNAL_DATA_FL
3534 critical_flags |= FS_JOURNAL_DATA_FL;
3537 if (a->todo & TODO_FFLAGS) {
3538 archive_entry_fflags(a->entry, &set, &clear);
3541 * The first test encourages the compiler to eliminate
3542 * all of this if it's not necessary.
3544 if ((critical_flags != 0) && (set & critical_flags)) {
3545 le = current_fixup(a, a->name);
3547 return (ARCHIVE_FATAL);
3548 le->fixup |= TODO_FFLAGS;
3549 le->fflags_set = set;
3550 /* Store the mode if it's not already there. */
3551 if ((le->fixup & TODO_MODE) == 0)
3554 r = set_fflags_platform(a, a->fd,
3555 a->name, mode, set, clear);
3556 if (r != ARCHIVE_OK)
3560 return (ARCHIVE_OK);
3564 clear_nochange_fflags(struct archive_write_disk *a)
3567 mode_t mode = archive_entry_mode(a->entry);
3569 /* Hopefully, the compiler will optimize this mess into a constant. */
3572 nochange_flags |= SF_IMMUTABLE;
3575 nochange_flags |= UF_IMMUTABLE;
3578 nochange_flags |= SF_APPEND;
3581 nochange_flags |= UF_APPEND;
3583 #ifdef EXT2_APPEND_FL
3584 nochange_flags |= EXT2_APPEND_FL;
3586 #ifdef EXT2_IMMUTABLE_FL
3587 nochange_flags |= EXT2_IMMUTABLE_FL;
3590 return (set_fflags_platform(a, a->fd, a->name, mode, 0,
3595 #if ( defined(HAVE_LCHFLAGS) || defined(HAVE_CHFLAGS) || defined(HAVE_FCHFLAGS) ) && defined(HAVE_STRUCT_STAT_ST_FLAGS)
3597 * BSD reads flags using stat() and sets them with one of {f,l,}chflags()
3600 set_fflags_platform(struct archive_write_disk *a, int fd, const char *name,
3601 mode_t mode, unsigned long set, unsigned long clear)
3605 (void)mode; /* UNUSED */
3606 if (set == 0 && clear == 0)
3607 return (ARCHIVE_OK);
3610 * XXX Is the stat here really necessary? Or can I just use
3611 * the 'set' flags directly? In particular, I'm not sure
3612 * about the correct approach if we're overwriting an existing
3613 * file that already has flags on it. XXX
3615 if ((r = lazy_stat(a)) != ARCHIVE_OK)
3618 a->st.st_flags &= ~clear;
3619 a->st.st_flags |= set;
3620 #ifdef HAVE_FCHFLAGS
3621 /* If platform has fchflags() and we were given an fd, use it. */
3622 if (fd >= 0 && fchflags(fd, a->st.st_flags) == 0)
3623 return (ARCHIVE_OK);
3626 * If we can't use the fd to set the flags, we'll use the
3627 * pathname to set flags. We prefer lchflags() but will use
3628 * chflags() if we must.
3630 #ifdef HAVE_LCHFLAGS
3631 if (lchflags(name, a->st.st_flags) == 0)
3632 return (ARCHIVE_OK);
3633 #elif defined(HAVE_CHFLAGS)
3634 if (S_ISLNK(a->st.st_mode)) {
3635 archive_set_error(&a->archive, errno,
3636 "Can't set file flags on symlink.");
3637 return (ARCHIVE_WARN);
3639 if (chflags(name, a->st.st_flags) == 0)
3640 return (ARCHIVE_OK);
3642 archive_set_error(&a->archive, errno,
3643 "Failed to set file flags");
3644 return (ARCHIVE_WARN);
3647 #elif (defined(FS_IOC_GETFLAGS) && defined(FS_IOC_SETFLAGS) && \
3648 defined(HAVE_WORKING_FS_IOC_GETFLAGS)) || \
3649 (defined(EXT2_IOC_GETFLAGS) && defined(EXT2_IOC_SETFLAGS) && \
3650 defined(HAVE_WORKING_EXT2_IOC_GETFLAGS))
3652 * Linux uses ioctl() to read and write file flags.
3655 set_fflags_platform(struct archive_write_disk *a, int fd, const char *name,
3656 mode_t mode, unsigned long set, unsigned long clear)
3660 int newflags, oldflags;
3663 if (set == 0 && clear == 0)
3664 return (ARCHIVE_OK);
3665 /* Only regular files and dirs can have flags. */
3666 if (!S_ISREG(mode) && !S_ISDIR(mode))
3667 return (ARCHIVE_OK);
3669 /* If we weren't given an fd, open it ourselves. */
3671 myfd = open(name, O_RDONLY | O_NONBLOCK | O_BINARY | O_CLOEXEC);
3672 __archive_ensure_cloexec_flag(myfd);
3675 return (ARCHIVE_OK);
3678 * Linux has no define for the flags that are only settable by
3679 * the root user. This code may seem a little complex, but
3680 * there seem to be some Linux systems that lack these
3681 * defines. (?) The code below degrades reasonably gracefully
3682 * if sf_mask is incomplete.
3684 #if defined(FS_IMMUTABLE_FL)
3685 sf_mask |= FS_IMMUTABLE_FL;
3686 #elif defined(EXT2_IMMUTABLE_FL)
3687 sf_mask |= EXT2_IMMUTABLE_FL;
3689 #if defined(FS_APPEND_FL)
3690 sf_mask |= FS_APPEND_FL;
3691 #elif defined(EXT2_APPEND_FL)
3692 sf_mask |= EXT2_APPEND_FL;
3694 #if defined(FS_JOURNAL_DATA_FL)
3695 sf_mask |= FS_JOURNAL_DATA_FL;
3698 * XXX As above, this would be way simpler if we didn't have
3699 * to read the current flags from disk. XXX
3703 /* Read the current file flags. */
3705 #ifdef FS_IOC_GETFLAGS
3713 /* Try setting the flags as given. */
3714 newflags = (oldflags & ~clear) | set;
3716 #ifdef FS_IOC_SETFLAGS
3726 /* If we couldn't set all the flags, try again with a subset. */
3727 newflags &= ~sf_mask;
3728 oldflags &= sf_mask;
3729 newflags |= oldflags;
3731 #ifdef FS_IOC_SETFLAGS
3739 /* We couldn't set the flags, so report the failure. */
3741 archive_set_error(&a->archive, errno,
3742 "Failed to set file flags");
3753 * Of course, some systems have neither BSD chflags() nor Linux' flags
3754 * support through ioctl().
3757 set_fflags_platform(struct archive_write_disk *a, int fd, const char *name,
3758 mode_t mode, unsigned long set, unsigned long clear)
3760 (void)a; /* UNUSED */
3761 (void)fd; /* UNUSED */
3762 (void)name; /* UNUSED */
3763 (void)mode; /* UNUSED */
3764 (void)set; /* UNUSED */
3765 (void)clear; /* UNUSED */
3766 return (ARCHIVE_OK);
3769 #endif /* __linux */
3771 #ifndef HAVE_COPYFILE_H
3772 /* Default is to simply drop Mac extended metadata. */
3774 set_mac_metadata(struct archive_write_disk *a, const char *pathname,
3775 const void *metadata, size_t metadata_size)
3777 (void)a; /* UNUSED */
3778 (void)pathname; /* UNUSED */
3779 (void)metadata; /* UNUSED */
3780 (void)metadata_size; /* UNUSED */
3781 return (ARCHIVE_OK);
3785 fixup_appledouble(struct archive_write_disk *a, const char *pathname)
3787 (void)a; /* UNUSED */
3788 (void)pathname; /* UNUSED */
3789 return (ARCHIVE_OK);
3794 * On Mac OS, we use copyfile() to unpack the metadata and
3795 * apply it to the target file.
3798 #if defined(HAVE_SYS_XATTR_H)
3800 copy_xattrs(struct archive_write_disk *a, int tmpfd, int dffd)
3803 char *xattr_names = NULL, *xattr_val = NULL;
3804 int ret = ARCHIVE_OK, xattr_i;
3806 xattr_size = flistxattr(tmpfd, NULL, 0, 0);
3807 if (xattr_size == -1) {
3808 archive_set_error(&a->archive, errno,
3809 "Failed to read metadata(xattr)");
3813 xattr_names = malloc(xattr_size);
3814 if (xattr_names == NULL) {
3815 archive_set_error(&a->archive, ENOMEM,
3816 "Can't allocate memory for metadata(xattr)");
3817 ret = ARCHIVE_FATAL;
3820 xattr_size = flistxattr(tmpfd, xattr_names, xattr_size, 0);
3821 if (xattr_size == -1) {
3822 archive_set_error(&a->archive, errno,
3823 "Failed to read metadata(xattr)");
3827 for (xattr_i = 0; xattr_i < xattr_size;
3828 xattr_i += strlen(xattr_names + xattr_i) + 1) {
3829 char *xattr_val_saved;
3833 s = fgetxattr(tmpfd, xattr_names + xattr_i, NULL, 0, 0, 0);
3835 archive_set_error(&a->archive, errno,
3836 "Failed to get metadata(xattr)");
3840 xattr_val_saved = xattr_val;
3841 xattr_val = realloc(xattr_val, s);
3842 if (xattr_val == NULL) {
3843 archive_set_error(&a->archive, ENOMEM,
3844 "Failed to get metadata(xattr)");
3846 free(xattr_val_saved);
3849 s = fgetxattr(tmpfd, xattr_names + xattr_i, xattr_val, s, 0, 0);
3851 archive_set_error(&a->archive, errno,
3852 "Failed to get metadata(xattr)");
3856 f = fsetxattr(dffd, xattr_names + xattr_i, xattr_val, s, 0, 0);
3858 archive_set_error(&a->archive, errno,
3859 "Failed to get metadata(xattr)");
3872 copy_acls(struct archive_write_disk *a, int tmpfd, int dffd)
3874 #ifndef HAVE_SYS_ACL_H
3877 acl_t acl, dfacl = NULL;
3878 int acl_r, ret = ARCHIVE_OK;
3880 acl = acl_get_fd(tmpfd);
3882 if (errno == ENOENT)
3883 /* There are not any ACLs. */
3885 archive_set_error(&a->archive, errno,
3886 "Failed to get metadata(acl)");
3890 dfacl = acl_dup(acl);
3891 acl_r = acl_set_fd(dffd, dfacl);
3893 archive_set_error(&a->archive, errno,
3894 "Failed to get metadata(acl)");
3908 create_tempdatafork(struct archive_write_disk *a, const char *pathname)
3910 struct archive_string tmpdatafork;
3913 archive_string_init(&tmpdatafork);
3914 archive_strcpy(&tmpdatafork, "tar.md.XXXXXX");
3915 tmpfd = mkstemp(tmpdatafork.s);
3917 archive_set_error(&a->archive, errno,
3918 "Failed to mkstemp");
3919 archive_string_free(&tmpdatafork);
3922 if (copyfile(pathname, tmpdatafork.s, 0,
3923 COPYFILE_UNPACK | COPYFILE_NOFOLLOW
3924 | COPYFILE_ACL | COPYFILE_XATTR) < 0) {
3925 archive_set_error(&a->archive, errno,
3926 "Failed to restore metadata");
3930 unlink(tmpdatafork.s);
3931 archive_string_free(&tmpdatafork);
3936 copy_metadata(struct archive_write_disk *a, const char *metadata,
3937 const char *datafork, int datafork_compressed)
3939 int ret = ARCHIVE_OK;
3941 if (datafork_compressed) {
3944 tmpfd = create_tempdatafork(a, metadata);
3946 return (ARCHIVE_WARN);
3949 * Do not open the data fork compressed by HFS+ compression
3950 * with at least a writing mode(O_RDWR or O_WRONLY). it
3951 * makes the data fork uncompressed.
3953 dffd = open(datafork, 0);
3955 archive_set_error(&a->archive, errno,
3956 "Failed to open the data fork for metadata");
3958 return (ARCHIVE_WARN);
3961 #if defined(HAVE_SYS_XATTR_H)
3962 ret = copy_xattrs(a, tmpfd, dffd);
3963 if (ret == ARCHIVE_OK)
3965 ret = copy_acls(a, tmpfd, dffd);
3969 if (copyfile(metadata, datafork, 0,
3970 COPYFILE_UNPACK | COPYFILE_NOFOLLOW
3971 | COPYFILE_ACL | COPYFILE_XATTR) < 0) {
3972 archive_set_error(&a->archive, errno,
3973 "Failed to restore metadata");
3981 set_mac_metadata(struct archive_write_disk *a, const char *pathname,
3982 const void *metadata, size_t metadata_size)
3984 struct archive_string tmp;
3987 int ret = ARCHIVE_OK;
3989 /* This would be simpler if copyfile() could just accept the
3990 * metadata as a block of memory; then we could sidestep this
3991 * silly dance of writing the data to disk just so that
3992 * copyfile() can read it back in again. */
3993 archive_string_init(&tmp);
3994 archive_strcpy(&tmp, pathname);
3995 archive_strcat(&tmp, ".XXXXXX");
3996 fd = mkstemp(tmp.s);
3999 archive_set_error(&a->archive, errno,
4000 "Failed to restore metadata");
4001 archive_string_free(&tmp);
4002 return (ARCHIVE_WARN);
4004 written = write(fd, metadata, metadata_size);
4006 if ((size_t)written != metadata_size) {
4007 archive_set_error(&a->archive, errno,
4008 "Failed to restore metadata");
4013 #if defined(UF_COMPRESSED)
4014 if ((a->todo & TODO_HFS_COMPRESSION) != 0 &&
4015 (ret = lazy_stat(a)) == ARCHIVE_OK)
4016 compressed = a->st.st_flags & UF_COMPRESSED;
4020 ret = copy_metadata(a, tmp.s, pathname, compressed);
4023 archive_string_free(&tmp);
4028 fixup_appledouble(struct archive_write_disk *a, const char *pathname)
4033 struct archive_string datafork;
4034 int fd = -1, ret = ARCHIVE_OK;
4036 archive_string_init(&datafork);
4037 /* Check if the current file name is a type of the resource
4039 p = strrchr(pathname, '/');
4044 if (p[0] != '.' || p[1] != '_')
4045 goto skip_appledouble;
4048 * Check if the data fork file exists.
4050 * TODO: Check if this write disk object has handled it.
4052 archive_strncpy(&datafork, pathname, p - pathname);
4053 archive_strcat(&datafork, p + 2);
4054 if (lstat(datafork.s, &st) == -1 ||
4055 (st.st_mode & AE_IFMT) != AE_IFREG)
4056 goto skip_appledouble;
4059 * Check if the file is in the AppleDouble form.
4061 fd = open(pathname, O_RDONLY | O_BINARY | O_CLOEXEC);
4062 __archive_ensure_cloexec_flag(fd);
4064 archive_set_error(&a->archive, errno,
4065 "Failed to open a restoring file");
4067 goto skip_appledouble;
4069 if (read(fd, buff, 8) == -1) {
4070 archive_set_error(&a->archive, errno,
4071 "Failed to read a restoring file");
4074 goto skip_appledouble;
4077 /* Check AppleDouble Magic Code. */
4078 if (archive_be32dec(buff) != 0x00051607)
4079 goto skip_appledouble;
4080 /* Check AppleDouble Version. */
4081 if (archive_be32dec(buff+4) != 0x00020000)
4082 goto skip_appledouble;
4084 ret = copy_metadata(a, pathname, datafork.s,
4085 #if defined(UF_COMPRESSED)
4086 st.st_flags & UF_COMPRESSED);
4090 if (ret == ARCHIVE_OK) {
4095 archive_string_free(&datafork);
4100 #if ARCHIVE_XATTR_LINUX || ARCHIVE_XATTR_DARWIN || ARCHIVE_XATTR_AIX
4102 * Restore extended attributes - Linux, Darwin and AIX implementations:
4103 * AIX' ea interface is syntaxwise identical to the Linux xattr interface.
4106 set_xattrs(struct archive_write_disk *a)
4108 struct archive_entry *entry = a->entry;
4109 struct archive_string errlist;
4110 int ret = ARCHIVE_OK;
4111 int i = archive_entry_xattr_reset(entry);
4114 archive_string_init(&errlist);
4122 archive_entry_xattr_next(entry, &name, &value, &size);
4126 #if ARCHIVE_XATTR_LINUX
4127 /* Linux: quietly skip POSIX.1e ACL extended attributes */
4128 if (strncmp(name, "system.", 7) == 0 &&
4129 (strcmp(name + 7, "posix_acl_access") == 0 ||
4130 strcmp(name + 7, "posix_acl_default") == 0))
4132 if (strncmp(name, "trusted.SGI_", 12) == 0 &&
4133 (strcmp(name + 12, "ACL_DEFAULT") == 0 ||
4134 strcmp(name + 12, "ACL_FILE") == 0))
4137 /* Linux: xfsroot namespace is obsolete and unsupported */
4138 if (strncmp(name, "xfsroot.", 8) == 0) {
4140 archive_strcat(&errlist, name);
4141 archive_strappend_char(&errlist, ' ');
4147 #if ARCHIVE_XATTR_LINUX
4148 e = fsetxattr(a->fd, name, value, size, 0);
4149 #elif ARCHIVE_XATTR_DARWIN
4150 e = fsetxattr(a->fd, name, value, size, 0, 0);
4151 #elif ARCHIVE_XATTR_AIX
4152 e = fsetea(a->fd, name, value, size, 0);
4155 #if ARCHIVE_XATTR_LINUX
4156 e = lsetxattr(archive_entry_pathname(entry),
4157 name, value, size, 0);
4158 #elif ARCHIVE_XATTR_DARWIN
4159 e = setxattr(archive_entry_pathname(entry),
4160 name, value, size, 0, XATTR_NOFOLLOW);
4161 #elif ARCHIVE_XATTR_AIX
4162 e = lsetea(archive_entry_pathname(entry),
4163 name, value, size, 0);
4168 archive_strcat(&errlist, name);
4169 archive_strappend_char(&errlist, ' ');
4170 if (errno != ENOTSUP && errno != ENOSYS)
4175 if (ret == ARCHIVE_WARN) {
4176 if (fail && errlist.length > 0) {
4178 errlist.s[errlist.length] = '\0';
4179 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
4180 "Cannot restore extended attributes: %s",
4183 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
4184 "Cannot restore extended "
4185 "attributes on this file system.");
4188 archive_string_free(&errlist);
4191 #elif ARCHIVE_XATTR_FREEBSD
4193 * Restore extended attributes - FreeBSD implementation
4196 set_xattrs(struct archive_write_disk *a)
4198 struct archive_entry *entry = a->entry;
4199 struct archive_string errlist;
4200 int ret = ARCHIVE_OK;
4201 int i = archive_entry_xattr_reset(entry);
4204 archive_string_init(&errlist);
4210 archive_entry_xattr_next(entry, &name, &value, &size);
4215 if (strncmp(name, "user.", 5) == 0) {
4216 /* "user." attributes go to user namespace */
4218 namespace = EXTATTR_NAMESPACE_USER;
4220 /* Other namespaces are unsupported */
4221 archive_strcat(&errlist, name);
4222 archive_strappend_char(&errlist, ' ');
4229 e = extattr_set_fd(a->fd, namespace, name,
4232 e = extattr_set_link(
4233 archive_entry_pathname(entry), namespace,
4236 if (e != (int)size) {
4237 archive_strcat(&errlist, name);
4238 archive_strappend_char(&errlist, ' ');
4240 if (errno != ENOTSUP && errno != ENOSYS)
4246 if (ret == ARCHIVE_WARN) {
4247 if (fail && errlist.length > 0) {
4249 errlist.s[errlist.length] = '\0';
4251 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
4252 "Cannot restore extended attributes: %s",
4255 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
4256 "Cannot restore extended "
4257 "attributes on this file system.");
4260 archive_string_free(&errlist);
4265 * Restore extended attributes - stub implementation for unsupported systems
4268 set_xattrs(struct archive_write_disk *a)
4270 static int warning_done = 0;
4272 /* If there aren't any extended attributes, then it's okay not
4273 * to extract them, otherwise, issue a single warning. */
4274 if (archive_entry_xattr_count(a->entry) != 0 && !warning_done) {
4276 archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
4277 "Cannot restore extended attributes on this system");
4278 return (ARCHIVE_WARN);
4280 /* Warning was already emitted; suppress further warnings. */
4281 return (ARCHIVE_OK);
4286 * Test if file on disk is older than entry.
4289 older(struct stat *st, struct archive_entry *entry)
4291 /* First, test the seconds and return if we have a definite answer. */
4292 /* Definitely older. */
4293 if (to_int64_time(st->st_mtime) < to_int64_time(archive_entry_mtime(entry)))
4295 /* Definitely younger. */
4296 if (to_int64_time(st->st_mtime) > to_int64_time(archive_entry_mtime(entry)))
4298 /* If this platform supports fractional seconds, try those. */
4299 #if HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC
4300 /* Definitely older. */
4301 if (st->st_mtimespec.tv_nsec < archive_entry_mtime_nsec(entry))
4303 #elif HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
4304 /* Definitely older. */
4305 if (st->st_mtim.tv_nsec < archive_entry_mtime_nsec(entry))
4307 #elif HAVE_STRUCT_STAT_ST_MTIME_N
4309 if (st->st_mtime_n < archive_entry_mtime_nsec(entry))
4311 #elif HAVE_STRUCT_STAT_ST_UMTIME
4313 if (st->st_umtime * 1000 < archive_entry_mtime_nsec(entry))
4315 #elif HAVE_STRUCT_STAT_ST_MTIME_USEC
4317 if (st->st_mtime_usec * 1000 < archive_entry_mtime_nsec(entry))
4320 /* This system doesn't have high-res timestamps. */
4322 /* Same age or newer, so not older. */
4326 #ifndef ARCHIVE_ACL_SUPPORT
4328 archive_write_disk_set_acls(struct archive *a, int fd, const char *name,
4329 struct archive_acl *abstract_acl, __LA_MODE_T mode)
4331 (void)a; /* UNUSED */
4332 (void)fd; /* UNUSED */
4333 (void)name; /* UNUSED */
4334 (void)abstract_acl; /* UNUSED */
4335 (void)mode; /* UNUSED */
4336 return (ARCHIVE_OK);
4340 #endif /* !_WIN32 || __CYGWIN__ */
projects / dragonfly.git / blob