2 * Copyright (c) 2003-2010 Tim Kientzle
3 * Copyright (c) 2011-2012 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>
36 #ifdef HAVE_SYS_UTIME_H
37 #include <sys/utime.h>
53 /* TODO: Support Mac OS 'quarantine' feature. This is really just a
54 * standard tag to mark files that have been downloaded as "tainted".
55 * On Mac OS, we should mark the extracted files as tainted if the
56 * archive being read was tainted. Windows has a similar feature; we
57 * should investigate ways to support this generically. */
60 #include "archive_acl_private.h"
61 #include "archive_string.h"
62 #include "archive_entry.h"
63 #include "archive_private.h"
68 #ifndef IO_REPARSE_TAG_SYMLINK
69 /* Old SDKs do not provide IO_REPARSE_TAG_SYMLINK */
70 #define IO_REPARSE_TAG_SYMLINK 0xA000000CL
73 static BOOL SetFilePointerEx_perso(HANDLE hFile,
74 LARGE_INTEGER liDistanceToMove,
75 PLARGE_INTEGER lpNewFilePointer,
79 li.QuadPart = liDistanceToMove.QuadPart;
80 li.LowPart = SetFilePointer(
81 hFile, li.LowPart, &li.HighPart, dwMoveMethod);
82 if(lpNewFilePointer) {
83 lpNewFilePointer->QuadPart = li.QuadPart;
85 return li.LowPart != (DWORD)-1 || GetLastError() == NO_ERROR;
89 struct fixup_entry *next;
90 struct archive_acl acl;
96 unsigned long atime_nanos;
97 unsigned long birthtime_nanos;
98 unsigned long mtime_nanos;
99 unsigned long ctime_nanos;
100 unsigned long fflags_set;
101 int fixup; /* bitmask of what needs fixing */
106 * We use a bitmask to track which operations remain to be done for
107 * this file. In particular, this helps us avoid unnecessary
108 * operations when it's possible to take care of one step as a
109 * side-effect of another. For example, mkdir() can specify the mode
110 * for the newly-created object but symlink() cannot. This means we
111 * can skip chmod() if mkdir() succeeded, but we must explicitly
112 * chmod() if we're trying to create a directory that already exists
113 * (mkdir() failed) or if we're restoring a symlink. Similarly, we
114 * need to verify UID/GID before trying to restore SUID/SGID bits;
115 * that verification can occur explicitly through a stat() call or
116 * implicitly because of a successful chown() call.
118 #define TODO_MODE_FORCE 0x40000000
119 #define TODO_MODE_BASE 0x20000000
120 #define TODO_SUID 0x10000000
121 #define TODO_SUID_CHECK 0x08000000
122 #define TODO_SGID 0x04000000
123 #define TODO_SGID_CHECK 0x02000000
124 #define TODO_MODE (TODO_MODE_BASE|TODO_SUID|TODO_SGID)
125 #define TODO_TIMES ARCHIVE_EXTRACT_TIME
126 #define TODO_OWNER ARCHIVE_EXTRACT_OWNER
127 #define TODO_FFLAGS ARCHIVE_EXTRACT_FFLAGS
128 #define TODO_ACLS ARCHIVE_EXTRACT_ACL
129 #define TODO_XATTR ARCHIVE_EXTRACT_XATTR
130 #define TODO_MAC_METADATA ARCHIVE_EXTRACT_MAC_METADATA
132 struct archive_write_disk {
133 struct archive archive;
136 struct fixup_entry *fixup_list;
137 struct fixup_entry *current_fixup;
140 int64_t skip_file_dev;
141 int64_t skip_file_ino;
144 int64_t (*lookup_gid)(void *private, const char *gname, int64_t gid);
145 void (*cleanup_gid)(void *private);
146 void *lookup_gid_data;
147 int64_t (*lookup_uid)(void *private, const char *uname, int64_t uid);
148 void (*cleanup_uid)(void *private);
149 void *lookup_uid_data;
152 * Full path of last file to satisfy symlink checks.
154 struct archive_wstring path_safe;
157 * Cached stat data from disk for the current entry.
158 * If this is valid, pst points to st. Otherwise,
161 BY_HANDLE_FILE_INFORMATION st;
162 BY_HANDLE_FILE_INFORMATION *pst;
164 /* Information about the object being restored right now. */
165 struct archive_entry *entry; /* Entry being extracted. */
166 wchar_t *name; /* Name of entry, possibly edited. */
167 struct archive_wstring _name_data; /* backing store for 'name' */
168 /* Tasks remaining for this object. */
170 /* Tasks deferred until end-of-archive. */
172 /* Options requested by the client. */
174 /* Handle for the file we're restoring. */
176 /* Current offset for writing data to the file. */
178 /* Last offset actually written to disk. */
180 /* Total bytes actually written to files. */
181 int64_t total_bytes_written;
182 /* Maximum size of file, -1 if unknown. */
184 /* Dir we were in before this restore; only for deep paths. */
186 /* Mode we should use for this entry; affected by _PERM and umask. */
188 /* UID/GID to use in restoring this entry. */
194 * Default mode for dirs created automatically (will be modified by umask).
195 * Note that POSIX specifies 0777 for implicity-created dirs, "modified
196 * by the process' file creation mask."
198 #define DEFAULT_DIR_MODE 0777
200 * Dir modes are restored in two steps: During the extraction, the permissions
201 * in the archive are modified to match the following limits. During
202 * the post-extract fixup pass, the permissions from the archive are
205 #define MINIMUM_DIR_MODE 0700
206 #define MAXIMUM_DIR_MODE 0775
208 static int check_symlinks(struct archive_write_disk *);
209 static int create_filesystem_object(struct archive_write_disk *);
210 static struct fixup_entry *current_fixup(struct archive_write_disk *,
211 const wchar_t *pathname);
212 static int cleanup_pathname(struct archive_write_disk *);
213 static int create_dir(struct archive_write_disk *, wchar_t *);
214 static int create_parent_dir(struct archive_write_disk *, wchar_t *);
215 static int la_chmod(const wchar_t *, mode_t);
216 static int older(BY_HANDLE_FILE_INFORMATION *, struct archive_entry *);
217 static int permissive_name_w(struct archive_write_disk *);
218 static int restore_entry(struct archive_write_disk *);
219 static int set_acls(struct archive_write_disk *, HANDLE h,
220 const wchar_t *, struct archive_acl *);
221 static int set_xattrs(struct archive_write_disk *);
222 static int set_fflags(struct archive_write_disk *);
223 static int set_ownership(struct archive_write_disk *);
224 static int set_mode(struct archive_write_disk *, int mode);
225 static int set_times(struct archive_write_disk *, HANDLE, int,
226 const wchar_t *, time_t, long, time_t, long, time_t,
228 static int set_times_from_entry(struct archive_write_disk *);
229 static struct fixup_entry *sort_dir_list(struct fixup_entry *p);
230 static ssize_t write_data_block(struct archive_write_disk *,
231 const char *, size_t);
233 static struct archive_vtable *archive_write_disk_vtable(void);
235 static int _archive_write_disk_close(struct archive *);
236 static int _archive_write_disk_free(struct archive *);
237 static int _archive_write_disk_header(struct archive *,
238 struct archive_entry *);
239 static int64_t _archive_write_disk_filter_bytes(struct archive *, int);
240 static int _archive_write_disk_finish_entry(struct archive *);
241 static ssize_t _archive_write_disk_data(struct archive *, const void *,
243 static ssize_t _archive_write_disk_data_block(struct archive *, const void *,
246 #define bhfi_dev(bhfi) ((bhfi)->dwVolumeSerialNumber)
247 /* Treat FileIndex as i-node. We should remove a sequence number
248 * which is high-16-bits of nFileIndexHigh. */
249 #define bhfi_ino(bhfi) \
250 ((((int64_t)((bhfi)->nFileIndexHigh & 0x0000FFFFUL)) << 32) \
251 + (bhfi)->nFileIndexLow)
252 #define bhfi_size(bhfi) \
253 ((((int64_t)(bhfi)->nFileSizeHigh) << 32) + (bhfi)->nFileSizeLow)
256 file_information(struct archive_write_disk *a, wchar_t *path,
257 BY_HANDLE_FILE_INFORMATION *st, mode_t *mode, int sim_lstat)
261 DWORD flag = FILE_FLAG_BACKUP_SEMANTICS;
262 WIN32_FIND_DATAW findData;
264 if (sim_lstat || mode != NULL) {
265 h = FindFirstFileW(path, &findData);
266 if (h == INVALID_HANDLE_VALUE &&
267 GetLastError() == ERROR_INVALID_NAME) {
269 full = __la_win_permissive_name_w(path);
270 h = FindFirstFileW(full, &findData);
273 if (h == INVALID_HANDLE_VALUE) {
274 la_dosmaperr(GetLastError());
280 /* Is symlink file ? */
282 ((findData.dwFileAttributes
283 & FILE_ATTRIBUTE_REPARSE_POINT) &&
284 (findData.dwReserved0 == IO_REPARSE_TAG_SYMLINK)))
285 flag |= FILE_FLAG_OPEN_REPARSE_POINT;
287 h = CreateFileW(a->name, 0, 0, NULL,
288 OPEN_EXISTING, flag, NULL);
289 if (h == INVALID_HANDLE_VALUE &&
290 GetLastError() == ERROR_INVALID_NAME) {
292 full = __la_win_permissive_name_w(path);
293 h = CreateFileW(full, 0, 0, NULL,
294 OPEN_EXISTING, flag, NULL);
297 if (h == INVALID_HANDLE_VALUE) {
298 la_dosmaperr(GetLastError());
301 r = GetFileInformationByHandle(h, st);
304 la_dosmaperr(GetLastError());
311 *mode = S_IRUSR | S_IRGRP | S_IROTH;
312 if ((st->dwFileAttributes & FILE_ATTRIBUTE_READONLY) == 0)
313 *mode |= S_IWUSR | S_IWGRP | S_IWOTH;
314 if ((st->dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
315 findData.dwReserved0 == IO_REPARSE_TAG_SYMLINK)
317 else if (st->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
318 *mode |= S_IFDIR | S_IXUSR | S_IXGRP | S_IXOTH;
323 p = wcsrchr(path, L'.');
324 if (p != NULL && wcslen(p) == 4) {
326 case L'B': case L'b':
327 if ((p[2] == L'A' || p[2] == L'a' ) &&
328 (p[3] == L'T' || p[3] == L't' ))
329 *mode |= S_IXUSR | S_IXGRP | S_IXOTH;
331 case L'C': case L'c':
332 if (((p[2] == L'M' || p[2] == L'm' ) &&
333 (p[3] == L'D' || p[3] == L'd' )))
334 *mode |= S_IXUSR | S_IXGRP | S_IXOTH;
336 case L'E': case L'e':
337 if ((p[2] == L'X' || p[2] == L'x' ) &&
338 (p[3] == L'E' || p[3] == L'e' ))
339 *mode |= S_IXUSR | S_IXGRP | S_IXOTH;
350 * Note: The path, for example, "aa/a/../b../c" will be converted to "aa/c"
351 * by GetFullPathNameW() W32 API, which __la_win_permissive_name_w uses.
352 * It means we cannot handle multiple dirs in one archive_entry.
353 * So we have to make the full-pathname in another way, which does not
354 * break "../" path string.
357 permissive_name_w(struct archive_write_disk *a)
364 if (wnp[0] == L'\\' && wnp[1] == L'\\' &&
365 wnp[2] == L'?' && wnp[3] == L'\\')
366 /* We have already a permissive name. */
369 if (wnp[0] == L'\\' && wnp[1] == L'\\' &&
370 wnp[2] == L'.' && wnp[3] == L'\\') {
371 /* This is a device name */
372 if (((wnp[4] >= L'a' && wnp[4] <= L'z') ||
373 (wnp[4] >= L'A' && wnp[4] <= L'Z')) &&
374 wnp[5] == L':' && wnp[6] == L'\\') {
375 wnp[2] = L'?';/* Not device name. */
381 * A full-pathname starting with a drive name like "C:\abc".
383 if (((wnp[0] >= L'a' && wnp[0] <= L'z') ||
384 (wnp[0] >= L'A' && wnp[0] <= L'Z')) &&
385 wnp[1] == L':' && wnp[2] == L'\\') {
389 archive_wstring_ensure(&(a->_name_data), 4 + wcslen(wn) + 1);
390 a->name = a->_name_data.s;
392 archive_wstrncpy(&(a->_name_data), L"\\\\?\\", 4);
393 archive_wstrcat(&(a->_name_data), wn);
399 * A full-pathname pointig a network drive
400 * like "\\<server-name>\<share-name>\file".
402 if (wnp[0] == L'\\' && wnp[1] == L'\\' && wnp[2] != L'\\') {
403 const wchar_t *p = &wnp[2];
405 /* Skip server-name letters. */
406 while (*p != L'\\' && *p != L'\0')
409 const wchar_t *rp = ++p;
410 /* Skip share-name letters. */
411 while (*p != L'\\' && *p != L'\0')
413 if (*p == L'\\' && p != rp) {
414 /* Now, match patterns such as
415 * "\\server-name\share-name\" */
419 archive_wstring_ensure(&(a->_name_data),
421 a->name = a->_name_data.s;
422 /* Prepend "\\?\UNC\" */
423 archive_wstrncpy(&(a->_name_data),
425 archive_wstrcat(&(a->_name_data), wn+2);
434 * Get current working directory.
436 l = GetCurrentDirectoryW(0, NULL);
439 ws = malloc(l * sizeof(wchar_t));
440 l = GetCurrentDirectoryW(l, ws);
448 * A full-pathname starting without a drive name like "\abc".
450 if (wnp[0] == L'\\') {
454 archive_wstring_ensure(&(a->_name_data),
455 4 + 2 + wcslen(wn) + 1);
456 a->name = a->_name_data.s;
457 /* Prepend "\\?\" and drive name. */
458 archive_wstrncpy(&(a->_name_data), L"\\\\?\\", 4);
459 archive_wstrncat(&(a->_name_data), wsp, 2);
460 archive_wstrcat(&(a->_name_data), wn);
469 archive_wstring_ensure(&(a->_name_data), 4 + l + 1 + wcslen(wn) + 1);
470 a->name = a->_name_data.s;
471 /* Prepend "\\?\" and drive name if not already added. */
472 if (l > 3 && wsp[0] == L'\\' && wsp[1] == L'\\' &&
473 wsp[2] == L'?' && wsp[3] == L'\\')
475 archive_wstrncpy(&(a->_name_data), wsp, l);
479 archive_wstrncpy(&(a->_name_data), L"\\\\?\\", 4);
480 archive_wstrncat(&(a->_name_data), wsp, l);
482 archive_wstrncat(&(a->_name_data), L"\\", 1);
483 archive_wstrcat(&(a->_name_data), wn);
484 a->name = a->_name_data.s;
491 la_chmod(const wchar_t *path, mode_t mode)
499 attr = GetFileAttributesW(path);
500 if (attr == (DWORD)-1 &&
501 GetLastError() == ERROR_INVALID_NAME) {
502 fullname = __la_win_permissive_name_w(path);
503 attr = GetFileAttributesW(fullname);
505 if (attr == (DWORD)-1) {
506 la_dosmaperr(GetLastError());
510 if (mode & _S_IWRITE)
511 attr &= ~FILE_ATTRIBUTE_READONLY;
513 attr |= FILE_ATTRIBUTE_READONLY;
514 if (fullname != NULL)
515 r = SetFileAttributesW(fullname, attr);
517 r = SetFileAttributesW(path, attr);
519 la_dosmaperr(GetLastError());
528 la_GetFunctionKernel32(const char *name)
530 static HINSTANCE lib;
534 lib = LoadLibrary(TEXT("kernel32.dll"));
537 fprintf(stderr, "Can't load kernel32.dll?!\n");
540 return (void *)GetProcAddress(lib, name);
544 la_CreateHardLinkW(wchar_t *linkname, wchar_t *target)
546 static BOOLEAN (WINAPI *f)(LPWSTR, LPWSTR, LPSECURITY_ATTRIBUTES);
552 f = la_GetFunctionKernel32("CreateHardLinkW");
556 ret = (*f)(linkname, target, NULL);
558 /* Under windows 2000, it is necessary to remove
559 * the "\\?\" prefix. */
560 #define IS_UNC(name) ((name[0] == L'U' || name[0] == L'u') && \
561 (name[1] == L'N' || name[1] == L'n') && \
562 (name[2] == L'C' || name[2] == L'c') && \
564 if (!wcsncmp(linkname,L"\\\\?\\", 4)) {
566 if (IS_UNC(linkname))
569 if (!wcsncmp(target,L"\\\\?\\", 4)) {
575 ret = (*f)(linkname, target, NULL);
581 la_ftruncate(HANDLE handle, int64_t length)
583 LARGE_INTEGER distance;
585 if (GetFileType(handle) != FILE_TYPE_DISK) {
589 distance.QuadPart = length;
590 if (!SetFilePointerEx_perso(handle, distance, NULL, FILE_BEGIN)) {
591 la_dosmaperr(GetLastError());
594 if (!SetEndOfFile(handle)) {
595 la_dosmaperr(GetLastError());
602 lazy_stat(struct archive_write_disk *a)
604 if (a->pst != NULL) {
605 /* Already have stat() data available. */
608 if (a->fh != INVALID_HANDLE_VALUE &&
609 GetFileInformationByHandle(a->fh, &a->st) == 0) {
615 * XXX At this point, symlinks should not be hit, otherwise
616 * XXX a race occurred. Do we want to check explicitly for that?
618 if (file_information(a, a->name, &a->st, NULL, 1) == 0) {
622 archive_set_error(&a->archive, errno, "Couldn't stat file");
623 return (ARCHIVE_WARN);
626 static struct archive_vtable *
627 archive_write_disk_vtable(void)
629 static struct archive_vtable av;
630 static int inited = 0;
633 av.archive_close = _archive_write_disk_close;
634 av.archive_filter_bytes = _archive_write_disk_filter_bytes;
635 av.archive_free = _archive_write_disk_free;
636 av.archive_write_header = _archive_write_disk_header;
637 av.archive_write_finish_entry
638 = _archive_write_disk_finish_entry;
639 av.archive_write_data = _archive_write_disk_data;
640 av.archive_write_data_block = _archive_write_disk_data_block;
647 _archive_write_disk_filter_bytes(struct archive *_a, int n)
649 struct archive_write_disk *a = (struct archive_write_disk *)_a;
650 (void)n; /* UNUSED */
651 if (n == -1 || n == 0)
652 return (a->total_bytes_written);
658 archive_write_disk_set_options(struct archive *_a, int flags)
660 struct archive_write_disk *a = (struct archive_write_disk *)_a;
668 * Extract this entry to disk.
670 * TODO: Validate hardlinks. According to the standards, we're
671 * supposed to check each extracted hardlink and squawk if it refers
672 * to a file that we didn't restore. I'm not entirely convinced this
673 * is a good idea, but more importantly: Is there any way to validate
674 * hardlinks without keeping a complete list of filenames from the
675 * entire archive?? Ugh.
679 _archive_write_disk_header(struct archive *_a, struct archive_entry *entry)
681 struct archive_write_disk *a = (struct archive_write_disk *)_a;
682 struct fixup_entry *fe;
685 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
686 ARCHIVE_STATE_HEADER | ARCHIVE_STATE_DATA,
687 "archive_write_disk_header");
688 archive_clear_error(&a->archive);
689 if (a->archive.state & ARCHIVE_STATE_DATA) {
690 r = _archive_write_disk_finish_entry(&a->archive);
691 if (r == ARCHIVE_FATAL)
695 /* Set up for this particular entry. */
697 a->current_fixup = NULL;
700 archive_entry_free(a->entry);
703 a->entry = archive_entry_clone(entry);
704 a->fh = INVALID_HANDLE_VALUE;
708 a->uid = a->user_uid;
709 a->mode = archive_entry_mode(a->entry);
710 if (archive_entry_size_is_set(a->entry))
711 a->filesize = archive_entry_size(a->entry);
714 archive_wstrcpy(&(a->_name_data), archive_entry_pathname_w(a->entry));
715 a->name = a->_name_data.s;
716 archive_clear_error(&a->archive);
719 * Clean up the requested path. This is necessary for correct
720 * dir restores; the dir restore logic otherwise gets messed
721 * up by nonsense like "dir/.".
723 ret = cleanup_pathname(a);
724 if (ret != ARCHIVE_OK)
728 * Generate a full-pathname and use it from here.
730 if (permissive_name_w(a) < 0) {
732 return (ARCHIVE_FAILED);
736 * Query the umask so we get predictable mode settings.
737 * This gets done on every call to _write_header in case the
738 * user edits their umask during the extraction for some
741 umask(a->user_umask = umask(0));
743 /* Figure out what we need to do for this entry. */
744 a->todo = TODO_MODE_BASE;
745 if (a->flags & ARCHIVE_EXTRACT_PERM) {
746 a->todo |= TODO_MODE_FORCE; /* Be pushy about permissions. */
748 * SGID requires an extra "check" step because we
749 * cannot easily predict the GID that the system will
750 * assign. (Different systems assign GIDs to files
751 * based on a variety of criteria, including process
752 * credentials and the gid of the enclosing
753 * directory.) We can only restore the SGID bit if
754 * the file has the right GID, and we only know the
755 * GID if we either set it (see set_ownership) or if
756 * we've actually called stat() on the file after it
757 * was restored. Since there are several places at
758 * which we might verify the GID, we need a TODO bit
761 if (a->mode & S_ISGID)
762 a->todo |= TODO_SGID | TODO_SGID_CHECK;
764 * Verifying the SUID is simpler, but can still be
765 * done in multiple ways, hence the separate "check" bit.
767 if (a->mode & S_ISUID)
768 a->todo |= TODO_SUID | TODO_SUID_CHECK;
771 * User didn't request full permissions, so don't
772 * restore SUID, SGID bits and obey umask.
777 a->mode &= ~a->user_umask;
780 if (a->flags & ARCHIVE_EXTRACT_OWNER)
781 a->todo |= TODO_OWNER;
783 if (a->flags & ARCHIVE_EXTRACT_TIME)
784 a->todo |= TODO_TIMES;
785 if (a->flags & ARCHIVE_EXTRACT_ACL) {
786 if (archive_entry_filetype(a->entry) == AE_IFDIR)
787 a->deferred |= TODO_ACLS;
789 a->todo |= TODO_ACLS;
791 if (a->flags & ARCHIVE_EXTRACT_XATTR)
792 a->todo |= TODO_XATTR;
793 if (a->flags & ARCHIVE_EXTRACT_FFLAGS)
794 a->todo |= TODO_FFLAGS;
795 if (a->flags & ARCHIVE_EXTRACT_SECURE_SYMLINKS) {
796 ret = check_symlinks(a);
797 if (ret != ARCHIVE_OK)
801 ret = restore_entry(a);
804 * TODO: There are rumours that some extended attributes must
805 * be restored before file data is written. If this is true,
806 * then we either need to write all extended attributes both
807 * before and after restoring the data, or find some rule for
808 * determining which must go first and which last. Due to the
809 * many ways people are using xattrs, this may prove to be an
810 * intractable problem.
814 * Fixup uses the unedited pathname from archive_entry_pathname(),
815 * because it is relative to the base dir and the edited path
816 * might be relative to some intermediate dir as a result of the
817 * deep restore logic.
819 if (a->deferred & TODO_MODE) {
820 fe = current_fixup(a, archive_entry_pathname_w(entry));
821 fe->fixup |= TODO_MODE_BASE;
825 if ((a->deferred & TODO_TIMES)
826 && (archive_entry_mtime_is_set(entry)
827 || archive_entry_atime_is_set(entry))) {
828 fe = current_fixup(a, archive_entry_pathname_w(entry));
830 fe->fixup |= TODO_TIMES;
831 if (archive_entry_atime_is_set(entry)) {
832 fe->atime = archive_entry_atime(entry);
833 fe->atime_nanos = archive_entry_atime_nsec(entry);
835 /* If atime is unset, use start time. */
836 fe->atime = a->start_time;
839 if (archive_entry_mtime_is_set(entry)) {
840 fe->mtime = archive_entry_mtime(entry);
841 fe->mtime_nanos = archive_entry_mtime_nsec(entry);
843 /* If mtime is unset, use start time. */
844 fe->mtime = a->start_time;
847 if (archive_entry_birthtime_is_set(entry)) {
848 fe->birthtime = archive_entry_birthtime(entry);
849 fe->birthtime_nanos = archive_entry_birthtime_nsec(entry);
851 /* If birthtime is unset, use mtime. */
852 fe->birthtime = fe->mtime;
853 fe->birthtime_nanos = fe->mtime_nanos;
857 if (a->deferred & TODO_ACLS) {
858 fe = current_fixup(a, archive_entry_pathname_w(entry));
859 archive_acl_copy(&fe->acl, archive_entry_acl(entry));
862 if (a->deferred & TODO_FFLAGS) {
863 fe = current_fixup(a, archive_entry_pathname_w(entry));
864 fe->fixup |= TODO_FFLAGS;
865 /* TODO: Complete this.. defer fflags from below. */
869 * On Windows, A creating sparse file requires a special mark.
871 if (a->fh != INVALID_HANDLE_VALUE &&
872 archive_entry_sparse_count(entry) > 0) {
873 int64_t base = 0, offset, length;
874 int i, cnt = archive_entry_sparse_reset(entry);
877 for (i = 0; i < cnt; i++) {
878 archive_entry_sparse_next(entry, &offset, &length);
879 if (offset - base >= 4096) {
880 sparse = 1;/* we have a hole. */
883 base = offset + length;
887 /* Mark this file as sparse. */
888 DeviceIoControl(a->fh, FSCTL_SET_SPARSE,
889 NULL, 0, NULL, 0, &dmy, NULL);
893 /* We've created the object and are ready to pour data into it. */
894 if (ret >= ARCHIVE_WARN)
895 a->archive.state = ARCHIVE_STATE_DATA;
897 * If it's not open, tell our client not to try writing.
898 * In particular, dirs, links, etc, don't get written to.
900 if (a->fh == INVALID_HANDLE_VALUE) {
901 archive_entry_set_size(entry, 0);
909 archive_write_disk_set_skip_file(struct archive *_a, int64_t d, int64_t i)
911 struct archive_write_disk *a = (struct archive_write_disk *)_a;
912 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
913 ARCHIVE_STATE_ANY, "archive_write_disk_set_skip_file");
914 a->skip_file_set = 1;
915 a->skip_file_dev = d;
916 a->skip_file_ino = i;
921 write_data_block(struct archive_write_disk *a, const char *buff, size_t size)
924 uint64_t start_size = size;
925 DWORD bytes_written = 0;
926 ssize_t block_size = 0, bytes_to_write;
931 if (a->filesize == 0 || a->fh == INVALID_HANDLE_VALUE) {
932 archive_set_error(&a->archive, 0,
933 "Attempt to write to an empty file");
934 return (ARCHIVE_WARN);
937 if (a->flags & ARCHIVE_EXTRACT_SPARSE) {
938 /* XXX TODO XXX Is there a more appropriate choice here ? */
939 /* This needn't match the filesystem allocation size. */
940 block_size = 16*1024;
943 /* If this write would run beyond the file size, truncate it. */
944 if (a->filesize >= 0 && (int64_t)(a->offset + size) > a->filesize)
945 start_size = size = (size_t)(a->filesize - a->offset);
947 /* Write the data. */
949 if (block_size == 0) {
950 bytes_to_write = size;
952 /* We're sparsifying the file. */
956 /* Skip leading zero bytes. */
957 for (p = buff, end = buff + size; p < end; ++p) {
961 a->offset += p - buff;
967 /* Calculate next block boundary after offset. */
969 = (a->offset / block_size + 1) * block_size;
971 /* If the adjusted write would cross block boundary,
972 * truncate it to the block boundary. */
973 bytes_to_write = size;
974 if (a->offset + bytes_to_write > block_end)
975 bytes_to_write = (DWORD)(block_end - a->offset);
977 memset(&ol, 0, sizeof(ol));
978 ol.Offset = (DWORD)(a->offset & 0xFFFFFFFF);
979 ol.OffsetHigh = (DWORD)(a->offset >> 32);
980 if (!WriteFile(a->fh, buff, (uint32_t)bytes_to_write,
981 &bytes_written, &ol)) {
984 lasterr = GetLastError();
985 if (lasterr == ERROR_ACCESS_DENIED)
988 la_dosmaperr(lasterr);
989 archive_set_error(&a->archive, errno, "Write failed");
990 return (ARCHIVE_WARN);
992 buff += bytes_written;
993 size -= bytes_written;
994 a->total_bytes_written += bytes_written;
995 a->offset += bytes_written;
996 a->fd_offset = a->offset;
998 return ((ssize_t)(start_size - size));
1002 _archive_write_disk_data_block(struct archive *_a,
1003 const void *buff, size_t size, int64_t offset)
1005 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1008 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1009 ARCHIVE_STATE_DATA, "archive_write_data_block");
1012 r = write_data_block(a, buff, size);
1015 if ((size_t)r < size) {
1016 archive_set_error(&a->archive, 0,
1017 "Write request too large");
1018 return (ARCHIVE_WARN);
1020 #if ARCHIVE_VERSION_NUMBER < 3999000
1021 return (ARCHIVE_OK);
1028 _archive_write_disk_data(struct archive *_a, const void *buff, size_t size)
1030 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1032 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1033 ARCHIVE_STATE_DATA, "archive_write_data");
1035 return (write_data_block(a, buff, size));
1039 _archive_write_disk_finish_entry(struct archive *_a)
1041 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1042 int ret = ARCHIVE_OK;
1044 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1045 ARCHIVE_STATE_HEADER | ARCHIVE_STATE_DATA,
1046 "archive_write_finish_entry");
1047 if (a->archive.state & ARCHIVE_STATE_HEADER)
1048 return (ARCHIVE_OK);
1049 archive_clear_error(&a->archive);
1051 /* Pad or truncate file to the right size. */
1052 if (a->fh == INVALID_HANDLE_VALUE) {
1053 /* There's no file. */
1054 } else if (a->filesize < 0) {
1055 /* File size is unknown, so we can't set the size. */
1056 } else if (a->fd_offset == a->filesize) {
1057 /* Last write ended at exactly the filesize; we're done. */
1058 /* Hopefully, this is the common case. */
1060 if (la_ftruncate(a->fh, a->filesize) == -1) {
1061 archive_set_error(&a->archive, errno,
1062 "File size could not be restored");
1063 return (ARCHIVE_FAILED);
1067 /* Restore metadata. */
1070 * Look up the "real" UID only if we're going to need it.
1071 * TODO: the TODO_SGID condition can be dropped here, can't it?
1073 if (a->todo & (TODO_OWNER | TODO_SUID | TODO_SGID)) {
1074 a->uid = archive_write_disk_uid(&a->archive,
1075 archive_entry_uname(a->entry),
1076 archive_entry_uid(a->entry));
1078 /* Look up the "real" GID only if we're going to need it. */
1079 /* TODO: the TODO_SUID condition can be dropped here, can't it? */
1080 if (a->todo & (TODO_OWNER | TODO_SGID | TODO_SUID)) {
1081 a->gid = archive_write_disk_gid(&a->archive,
1082 archive_entry_gname(a->entry),
1083 archive_entry_gid(a->entry));
1087 * Restore ownership before set_mode tries to restore suid/sgid
1088 * bits. If we set the owner, we know what it is and can skip
1089 * a stat() call to examine the ownership of the file on disk.
1091 if (a->todo & TODO_OWNER)
1092 ret = set_ownership(a);
1095 * set_mode must precede ACLs on systems such as Solaris and
1096 * FreeBSD where setting the mode implicitly clears extended ACLs
1098 if (a->todo & TODO_MODE) {
1099 int r2 = set_mode(a, a->mode);
1100 if (r2 < ret) ret = r2;
1104 * Security-related extended attributes (such as
1105 * security.capability on Linux) have to be restored last,
1106 * since they're implicitly removed by other file changes.
1108 if (a->todo & TODO_XATTR) {
1109 int r2 = set_xattrs(a);
1110 if (r2 < ret) ret = r2;
1114 * Some flags prevent file modification; they must be restored after
1115 * file contents are written.
1117 if (a->todo & TODO_FFLAGS) {
1118 int r2 = set_fflags(a);
1119 if (r2 < ret) ret = r2;
1123 * Time must follow most other metadata;
1124 * otherwise atime will get changed.
1126 if (a->todo & TODO_TIMES) {
1127 int r2 = set_times_from_entry(a);
1128 if (r2 < ret) ret = r2;
1132 * ACLs must be restored after timestamps because there are
1133 * ACLs that prevent attribute changes (including time).
1135 if (a->todo & TODO_ACLS) {
1136 int r2 = set_acls(a, a->fh,
1137 archive_entry_pathname_w(a->entry),
1138 archive_entry_acl(a->entry));
1139 if (r2 < ret) ret = r2;
1142 /* If there's an fd, we can close it now. */
1143 if (a->fh != INVALID_HANDLE_VALUE) {
1145 a->fh = INVALID_HANDLE_VALUE;
1147 /* If there's an entry, we can release it now. */
1149 archive_entry_free(a->entry);
1152 a->archive.state = ARCHIVE_STATE_HEADER;
1157 archive_write_disk_set_group_lookup(struct archive *_a,
1159 int64_t (*lookup_gid)(void *private, const char *gname, int64_t gid),
1160 void (*cleanup_gid)(void *private))
1162 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1163 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1164 ARCHIVE_STATE_ANY, "archive_write_disk_set_group_lookup");
1166 if (a->cleanup_gid != NULL && a->lookup_gid_data != NULL)
1167 (a->cleanup_gid)(a->lookup_gid_data);
1169 a->lookup_gid = lookup_gid;
1170 a->cleanup_gid = cleanup_gid;
1171 a->lookup_gid_data = private_data;
1172 return (ARCHIVE_OK);
1176 archive_write_disk_set_user_lookup(struct archive *_a,
1178 int64_t (*lookup_uid)(void *private, const char *uname, int64_t uid),
1179 void (*cleanup_uid)(void *private))
1181 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1182 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1183 ARCHIVE_STATE_ANY, "archive_write_disk_set_user_lookup");
1185 if (a->cleanup_uid != NULL && a->lookup_uid_data != NULL)
1186 (a->cleanup_uid)(a->lookup_uid_data);
1188 a->lookup_uid = lookup_uid;
1189 a->cleanup_uid = cleanup_uid;
1190 a->lookup_uid_data = private_data;
1191 return (ARCHIVE_OK);
1195 archive_write_disk_gid(struct archive *_a, const char *name, int64_t id)
1197 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1198 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1199 ARCHIVE_STATE_ANY, "archive_write_disk_gid");
1201 return (a->lookup_gid)(a->lookup_gid_data, name, id);
1206 archive_write_disk_uid(struct archive *_a, const char *name, int64_t id)
1208 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1209 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1210 ARCHIVE_STATE_ANY, "archive_write_disk_uid");
1212 return (a->lookup_uid)(a->lookup_uid_data, name, id);
1217 * Create a new archive_write_disk object and initialize it with global state.
1220 archive_write_disk_new(void)
1222 struct archive_write_disk *a;
1224 a = (struct archive_write_disk *)malloc(sizeof(*a));
1227 memset(a, 0, sizeof(*a));
1228 a->archive.magic = ARCHIVE_WRITE_DISK_MAGIC;
1229 /* We're ready to write a header immediately. */
1230 a->archive.state = ARCHIVE_STATE_HEADER;
1231 a->archive.vtable = archive_write_disk_vtable();
1232 a->start_time = time(NULL);
1233 /* Query and restore the umask. */
1234 umask(a->user_umask = umask(0));
1235 if (archive_wstring_ensure(&a->path_safe, 512) == NULL) {
1239 return (&a->archive);
1243 disk_unlink(wchar_t *path)
1249 if (r != 0 && GetLastError() == ERROR_INVALID_NAME) {
1250 fullname = __la_win_permissive_name_w(path);
1251 r = _wunlink(fullname);
1258 disk_rmdir(wchar_t *path)
1264 if (r != 0 && GetLastError() == ERROR_INVALID_NAME) {
1265 fullname = __la_win_permissive_name_w(path);
1266 r = _wrmdir(fullname);
1273 * The main restore function.
1276 restore_entry(struct archive_write_disk *a)
1278 int ret = ARCHIVE_OK, en;
1280 if (a->flags & ARCHIVE_EXTRACT_UNLINK && !S_ISDIR(a->mode)) {
1282 * TODO: Fix this. Apparently, there are platforms
1283 * that still allow root to hose the entire filesystem
1284 * by unlinking a dir. The S_ISDIR() test above
1285 * prevents us from using unlink() here if the new
1286 * object is a dir, but that doesn't mean the old
1287 * object isn't a dir.
1289 if (disk_unlink(a->name) == 0) {
1290 /* We removed it, reset cached stat. */
1292 } else if (errno == ENOENT) {
1293 /* File didn't exist, that's just as good. */
1294 } else if (disk_rmdir(a->name) == 0) {
1295 /* It was a dir, but now it's gone. */
1298 /* We tried, but couldn't get rid of it. */
1299 archive_set_error(&a->archive, errno,
1300 "Could not unlink");
1301 return(ARCHIVE_FAILED);
1305 /* Try creating it first; if this fails, we'll try to recover. */
1306 en = create_filesystem_object(a);
1308 if ((en == ENOTDIR || en == ENOENT)
1309 && !(a->flags & ARCHIVE_EXTRACT_NO_AUTODIR)) {
1311 /* If the parent dir doesn't exist, try creating it. */
1312 create_parent_dir(a, a->name);
1313 /* Now try to create the object again. */
1314 full = __la_win_permissive_name_w(a->name);
1318 /* Remove multiple directories such as "a/../b../c" */
1319 archive_wstrcpy(&(a->_name_data), full);
1320 a->name = a->_name_data.s;
1322 en = create_filesystem_object(a);
1326 if ((en == EISDIR || en == EEXIST)
1327 && (a->flags & ARCHIVE_EXTRACT_NO_OVERWRITE)) {
1328 /* If we're not overwriting, we're done. */
1329 archive_entry_unset_size(a->entry);
1330 return (ARCHIVE_OK);
1334 * Some platforms return EISDIR if you call
1335 * open(O_WRONLY | O_EXCL | O_CREAT) on a directory, some
1336 * return EEXIST. POSIX is ambiguous, requiring EISDIR
1337 * for open(O_WRONLY) on a dir and EEXIST for open(O_EXCL | O_CREAT)
1338 * on an existing item.
1341 /* A dir is in the way of a non-dir, rmdir it. */
1342 if (disk_rmdir(a->name) != 0) {
1343 archive_set_error(&a->archive, errno,
1344 "Can't remove already-existing dir");
1345 return (ARCHIVE_FAILED);
1349 en = create_filesystem_object(a);
1350 } else if (en == EEXIST) {
1353 * We know something is in the way, but we don't know what;
1354 * we need to find out before we go any further.
1358 * The SECURE_SYMLINK logic has already removed a
1359 * symlink to a dir if the client wants that. So
1360 * follow the symlink if we're creating a dir.
1362 if (S_ISDIR(a->mode))
1363 r = file_information(a, a->name, &a->st, &st_mode, 0);
1365 * If it's not a dir (or it's a broken symlink),
1366 * then don't follow it.
1368 if (r != 0 || !S_ISDIR(a->mode))
1369 r = file_information(a, a->name, &a->st, &st_mode, 1);
1371 archive_set_error(&a->archive, errno,
1372 "Can't stat existing object");
1373 return (ARCHIVE_FAILED);
1377 * NO_OVERWRITE_NEWER doesn't apply to directories.
1379 if ((a->flags & ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER)
1380 && !S_ISDIR(st_mode)) {
1381 if (!older(&(a->st), a->entry)) {
1382 archive_entry_unset_size(a->entry);
1383 return (ARCHIVE_OK);
1387 /* If it's our archive, we're done. */
1388 if (a->skip_file_set &&
1389 bhfi_dev(&a->st) == a->skip_file_dev &&
1390 bhfi_ino(&a->st) == a->skip_file_ino) {
1391 archive_set_error(&a->archive, 0,
1392 "Refusing to overwrite archive");
1393 return (ARCHIVE_FAILED);
1396 if (!S_ISDIR(st_mode)) {
1397 /* A non-dir is in the way, unlink it. */
1398 if (disk_unlink(a->name) != 0) {
1399 archive_set_error(&a->archive, errno,
1400 "Can't unlink already-existing object");
1401 return (ARCHIVE_FAILED);
1405 en = create_filesystem_object(a);
1406 } else if (!S_ISDIR(a->mode)) {
1407 /* A dir is in the way of a non-dir, rmdir it. */
1408 if (disk_rmdir(a->name) != 0) {
1409 archive_set_error(&a->archive, errno,
1410 "Can't remove already-existing dir");
1411 return (ARCHIVE_FAILED);
1414 en = create_filesystem_object(a);
1417 * There's a dir in the way of a dir. Don't
1418 * waste time with rmdir()/mkdir(), just fix
1419 * up the permissions on the existing dir.
1420 * Note that we don't change perms on existing
1421 * dirs unless _EXTRACT_PERM is specified.
1423 if ((a->mode != st_mode)
1424 && (a->todo & TODO_MODE_FORCE))
1425 a->deferred |= (a->todo & TODO_MODE);
1426 /* Ownership doesn't need deferred fixup. */
1427 en = 0; /* Forget the EEXIST. */
1432 /* Everything failed; give up here. */
1433 archive_set_error(&a->archive, en, "Can't create '%ls'",
1435 return (ARCHIVE_FAILED);
1438 a->pst = NULL; /* Cached stat data no longer valid. */
1443 * Returns 0 if creation succeeds, or else returns errno value from
1444 * the failed system call. Note: This function should only ever perform
1445 * a single system call.
1448 create_filesystem_object(struct archive_write_disk *a)
1450 /* Create the entry. */
1451 const wchar_t *linkname;
1453 mode_t final_mode, mode;
1456 /* We identify hard/symlinks according to the link names. */
1457 /* Since link(2) and symlink(2) don't handle modes, we're done here. */
1458 linkname = archive_entry_hardlink_w(a->entry);
1459 if (linkname != NULL) {
1460 wchar_t *linkfull, *namefull;
1462 linkfull = __la_win_permissive_name_w(linkname);
1463 namefull = __la_win_permissive_name_w(a->name);
1464 if (linkfull == NULL || namefull == NULL) {
1468 r = la_CreateHardLinkW(namefull, linkfull);
1470 la_dosmaperr(GetLastError());
1476 * New cpio and pax formats allow hardlink entries
1477 * to carry data, so we may have to open the file
1478 * for hardlink entries.
1480 * If the hardlink was successfully created and
1481 * the archive doesn't have carry data for it,
1482 * consider it to be non-authoritative for meta data.
1483 * This is consistent with GNU tar and BSD pax.
1484 * If the hardlink does carry data, let the last
1485 * archive entry decide ownership.
1487 if (r == 0 && a->filesize <= 0) {
1490 } else if (r == 0 && a->filesize > 0) {
1491 a->fh = CreateFileW(namefull, GENERIC_WRITE, 0, NULL,
1492 TRUNCATE_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
1493 if (a->fh == INVALID_HANDLE_VALUE) {
1494 la_dosmaperr(GetLastError());
1502 linkname = archive_entry_symlink_w(a->entry);
1503 if (linkname != NULL) {
1505 return symlink(linkname, a->name) ? errno : 0;
1512 * The remaining system calls all set permissions, so let's
1513 * try to take advantage of that to avoid an extra chmod()
1514 * call. (Recall that umask is set to zero right now!)
1517 /* Mode we want for the final restored object (w/o file type bits). */
1518 final_mode = a->mode & 07777;
1520 * The mode that will actually be restored in this step. Note
1521 * that SUID, SGID, etc, require additional work to ensure
1522 * security, so we never restore them at this point.
1524 mode = final_mode & 0777 & ~a->user_umask;
1526 switch (a->mode & AE_IFMT) {
1528 /* POSIX requires that we fall through here. */
1532 /* O_WRONLY | O_CREAT | O_EXCL */
1533 a->fh = CreateFileW(fullname, GENERIC_WRITE, 0, NULL,
1534 CREATE_NEW, FILE_ATTRIBUTE_NORMAL, NULL);
1535 if (a->fh == INVALID_HANDLE_VALUE &&
1536 GetLastError() == ERROR_INVALID_NAME &&
1537 fullname == a->name) {
1538 fullname = __la_win_permissive_name_w(a->name);
1539 a->fh = CreateFileW(fullname, GENERIC_WRITE, 0, NULL,
1540 CREATE_NEW, FILE_ATTRIBUTE_NORMAL, NULL);
1542 if (a->fh == INVALID_HANDLE_VALUE) {
1543 if (GetLastError() == ERROR_ACCESS_DENIED) {
1545 /* Simulate an errno of POSIX system. */
1546 attr = GetFileAttributesW(fullname);
1547 if (attr == (DWORD)-1)
1548 la_dosmaperr(GetLastError());
1549 else if (attr & FILE_ATTRIBUTE_DIRECTORY)
1554 la_dosmaperr(GetLastError());
1558 if (fullname != a->name)
1563 /* TODO: Find a better way to warn about our inability
1564 * to restore a block device node. */
1567 mode = (mode | MINIMUM_DIR_MODE) & MAXIMUM_DIR_MODE;
1569 r = CreateDirectoryW(fullname, NULL);
1570 if (r == 0 && GetLastError() == ERROR_INVALID_NAME &&
1571 fullname == a->name) {
1572 fullname = __la_win_permissive_name_w(a->name);
1573 r = CreateDirectoryW(fullname, NULL);
1577 /* Defer setting dir times. */
1578 a->deferred |= (a->todo & TODO_TIMES);
1579 a->todo &= ~TODO_TIMES;
1580 /* Never use an immediate chmod(). */
1581 /* We can't avoid the chmod() entirely if EXTRACT_PERM
1582 * because of SysV SGID inheritance. */
1583 if ((mode != final_mode)
1584 || (a->flags & ARCHIVE_EXTRACT_PERM))
1585 a->deferred |= (a->todo & TODO_MODE);
1586 a->todo &= ~TODO_MODE;
1588 la_dosmaperr(GetLastError());
1591 if (fullname != a->name)
1595 /* TODO: Find a better way to warn about our inability
1596 * to restore a fifo. */
1600 /* All the system calls above set errno on failure. */
1604 /* If we managed to set the final mode, we've avoided a chmod(). */
1605 if (mode == final_mode)
1606 a->todo &= ~TODO_MODE;
1611 * Cleanup function for archive_extract. Mostly, this involves processing
1612 * the fixup list, which is used to address a number of problems:
1613 * * Dir permissions might prevent us from restoring a file in that
1614 * dir, so we restore the dir with minimum 0700 permissions first,
1615 * then correct the mode at the end.
1616 * * Similarly, the act of restoring a file touches the directory
1617 * and changes the timestamp on the dir, so we have to touch-up dir
1618 * timestamps at the end as well.
1619 * * Some file flags can interfere with the restore by, for example,
1620 * preventing the creation of hardlinks to those files.
1621 * * Mac OS extended metadata includes ACLs, so must be deferred on dirs.
1623 * Note that tar/cpio do not require that archives be in a particular
1624 * order; there is no way to know when the last file has been restored
1625 * within a directory, so there's no way to optimize the memory usage
1626 * here by fixing up the directory any earlier than the
1629 * XXX TODO: Directory ACLs should be restored here, for the same
1630 * reason we set directory perms here. XXX
1633 _archive_write_disk_close(struct archive *_a)
1635 struct archive_write_disk *a = (struct archive_write_disk *)_a;
1636 struct fixup_entry *next, *p;
1639 archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
1640 ARCHIVE_STATE_HEADER | ARCHIVE_STATE_DATA,
1641 "archive_write_disk_close");
1642 ret = _archive_write_disk_finish_entry(&a->archive);
1644 /* Sort dir list so directories are fixed up in depth-first order. */
1645 p = sort_dir_list(a->fixup_list);
1648 a->pst = NULL; /* Mark stat cache as out-of-date. */
1649 if (p->fixup & TODO_TIMES) {
1650 set_times(a, INVALID_HANDLE_VALUE, p->mode, p->name,
1651 p->atime, p->atime_nanos,
1652 p->birthtime, p->birthtime_nanos,
1653 p->mtime, p->mtime_nanos,
1654 p->ctime, p->ctime_nanos);
1656 if (p->fixup & TODO_MODE_BASE)
1657 la_chmod(p->name, p->mode);
1658 if (p->fixup & TODO_ACLS)
1659 set_acls(a, INVALID_HANDLE_VALUE, p->name, &p->acl);
1661 archive_acl_clear(&p->acl);
1666 a->fixup_list = NULL;
1671 _archive_write_disk_free(struct archive *_a)
1673 struct archive_write_disk *a;
1676 return (ARCHIVE_OK);
1677 archive_check_magic(_a, ARCHIVE_WRITE_DISK_MAGIC,
1678 ARCHIVE_STATE_ANY | ARCHIVE_STATE_FATAL, "archive_write_disk_free");
1679 a = (struct archive_write_disk *)_a;
1680 ret = _archive_write_disk_close(&a->archive);
1681 archive_write_disk_set_group_lookup(&a->archive, NULL, NULL, NULL);
1682 archive_write_disk_set_user_lookup(&a->archive, NULL, NULL, NULL);
1684 archive_entry_free(a->entry);
1685 archive_wstring_free(&a->_name_data);
1686 archive_string_free(&a->archive.error_string);
1687 archive_wstring_free(&a->path_safe);
1688 a->archive.magic = 0;
1689 __archive_clean(&a->archive);
1695 * Simple O(n log n) merge sort to order the fixup list. In
1696 * particular, we want to restore dir timestamps depth-first.
1698 static struct fixup_entry *
1699 sort_dir_list(struct fixup_entry *p)
1701 struct fixup_entry *a, *b, *t;
1705 /* A one-item list is already sorted. */
1706 if (p->next == NULL)
1709 /* Step 1: split the list. */
1713 /* Step a twice, t once. */
1719 /* Now, t is at the mid-point, so break the list here. */
1724 /* Step 2: Recursively sort the two sub-lists. */
1725 a = sort_dir_list(a);
1726 b = sort_dir_list(b);
1728 /* Step 3: Merge the returned lists. */
1729 /* Pick the first element for the merged list. */
1730 if (wcscmp(a->name, b->name) > 0) {
1738 /* Always put the later element on the list first. */
1739 while (a != NULL && b != NULL) {
1740 if (wcscmp(a->name, b->name) > 0) {
1750 /* Only one list is non-empty, so just splice it on. */
1760 * Returns a new, initialized fixup entry.
1762 * TODO: Reduce the memory requirements for this list by using a tree
1763 * structure rather than a simple list of names.
1765 static struct fixup_entry *
1766 new_fixup(struct archive_write_disk *a, const wchar_t *pathname)
1768 struct fixup_entry *fe;
1770 fe = (struct fixup_entry *)calloc(1, sizeof(struct fixup_entry));
1773 fe->next = a->fixup_list;
1776 fe->name = _wcsdup(pathname);
1781 * Returns a fixup structure for the current entry.
1783 static struct fixup_entry *
1784 current_fixup(struct archive_write_disk *a, const wchar_t *pathname)
1786 if (a->current_fixup == NULL)
1787 a->current_fixup = new_fixup(a, pathname);
1788 return (a->current_fixup);
1791 /* TODO: Make this work. */
1793 * TODO: The deep-directory support bypasses this; disable deep directory
1794 * support if we're doing symlink checks.
1797 * TODO: Someday, integrate this with the deep dir support; they both
1798 * scan the path and both can be optimized by comparing against other
1801 /* TODO: Extend this to support symlinks on Windows Vista and later. */
1803 check_symlinks(struct archive_write_disk *a)
1808 BY_HANDLE_FILE_INFORMATION st;
1812 * Guard against symlink tricks. Reject any archive entry whose
1813 * destination would be altered by a symlink.
1815 /* Whatever we checked last time doesn't need to be re-checked. */
1818 while ((*pn != '\0') && (*p == *pn))
1821 /* Keep going until we've checked the entire name. */
1822 while (pn[0] != '\0' && (pn[0] != '\\' || pn[1] != '\0')) {
1823 /* Skip the next path element. */
1824 while (*pn != '\0' && *pn != '\\')
1828 /* Check that we haven't hit a symlink. */
1829 r = file_information(a, a->name, &st, &st_mode, 1);
1831 /* We've hit a dir that doesn't exist; stop now. */
1832 if (errno == ENOENT)
1834 } else if (S_ISLNK(st_mode)) {
1837 * Last element is symlink; remove it
1838 * so we can overwrite it with the
1839 * item being extracted.
1841 if (disk_unlink(a->name)) {
1842 archive_set_error(&a->archive, errno,
1843 "Could not remove symlink %ls",
1846 return (ARCHIVE_FAILED);
1850 * Even if we did remove it, a warning
1851 * is in order. The warning is silly,
1852 * though, if we're just replacing one
1853 * symlink with another symlink.
1855 if (!S_ISLNK(a->mode)) {
1856 archive_set_error(&a->archive, 0,
1857 "Removing symlink %ls",
1860 /* Symlink gone. No more problem! */
1863 } else if (a->flags & ARCHIVE_EXTRACT_UNLINK) {
1864 /* User asked us to remove problems. */
1865 if (disk_unlink(a->name) != 0) {
1866 archive_set_error(&a->archive, 0,
1867 "Cannot remove intervening "
1868 "symlink %ls", a->name);
1870 return (ARCHIVE_FAILED);
1874 archive_set_error(&a->archive, 0,
1875 "Cannot extract through symlink %ls",
1878 return (ARCHIVE_FAILED);
1883 /* We've checked and/or cleaned the whole path, so remember it. */
1884 archive_wstrcpy(&a->path_safe, a->name);
1885 return (ARCHIVE_OK);
1889 guidword(wchar_t *p, int n)
1893 for (i = 0; i < n; i++) {
1894 if ((*p >= L'0' && *p <= L'9') ||
1895 (*p >= L'a' && *p <= L'f') ||
1896 (*p >= L'A' && *p <= L'F'))
1905 * Canonicalize the pathname. In particular, this strips duplicate
1906 * '\' characters, '.' elements, and trailing '\'. It also raises an
1907 * error for an empty path, a trailing '..' or (if _SECURE_NODOTDOT is
1908 * set) any '..' in the path.
1911 cleanup_pathname(struct archive_write_disk *a)
1913 wchar_t *dest, *src, *p, *top;
1914 wchar_t separator = L'\0';
1918 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1919 "Invalid empty pathname");
1920 return (ARCHIVE_FAILED);
1923 /* Replace '/' by '\' */
1924 for (; *p != L'\0'; p++) {
1930 /* Skip leading "\\.\" or "\\?\" or "\\?\UNC\" or
1931 * "\\?\Volume{GUID}\"
1932 * (absolute path prefixes used by Windows API) */
1933 if (p[0] == L'\\' && p[1] == L'\\' &&
1934 (p[2] == L'.' || p[2] == L'?') && p[3] == L'\\')
1936 /* A path begin with "\\?\UNC\" */
1938 (p[4] == L'U' || p[4] == L'u') &&
1939 (p[5] == L'N' || p[5] == L'n') &&
1940 (p[6] == L'C' || p[6] == L'c') &&
1943 /* A path begin with "\\?\Volume{GUID}\" */
1944 else if (p[2] == L'?' &&
1945 (p[4] == L'V' || p[4] == L'v') &&
1946 (p[5] == L'O' || p[5] == L'o') &&
1947 (p[6] == L'L' || p[6] == L'l') &&
1948 (p[7] == L'U' || p[7] == L'u') &&
1949 (p[8] == L'M' || p[8] == L'm') &&
1950 (p[9] == L'E' || p[9] == L'e') &&
1952 if (guidword(p+11, 8) == 0 && p[19] == L'-' &&
1953 guidword(p+20, 4) == 0 && p[24] == L'-' &&
1954 guidword(p+25, 4) == 0 && p[29] == L'-' &&
1955 guidword(p+30, 4) == 0 && p[34] == L'-' &&
1956 guidword(p+35, 12) == 0 && p[47] == L'}' &&
1961 /* A path begin with "\\.\PhysicalDriveX" */
1962 } else if (p[2] == L'.' &&
1963 (p[4] == L'P' || p[4] == L'p') &&
1964 (p[5] == L'H' || p[5] == L'h') &&
1965 (p[6] == L'Y' || p[6] == L'y') &&
1966 (p[7] == L'S' || p[7] == L's') &&
1967 (p[8] == L'I' || p[8] == L'i') &&
1968 (p[9] == L'C' || p[9] == L'c') &&
1969 (p[9] == L'A' || p[9] == L'a') &&
1970 (p[9] == L'L' || p[9] == L'l') &&
1971 (p[9] == L'D' || p[9] == L'd') &&
1972 (p[9] == L'R' || p[9] == L'r') &&
1973 (p[9] == L'I' || p[9] == L'i') &&
1974 (p[9] == L'V' || p[9] == L'v') &&
1975 (p[9] == L'E' || p[9] == L'e') &&
1976 (p[10] >= L'0' && p[10] <= L'9') &&
1978 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1979 "Path is a physical drive name");
1980 return (ARCHIVE_FAILED);
1985 /* Skip leading drive letter from archives created
1987 if (((p[0] >= L'a' && p[0] <= L'z') ||
1988 (p[0] >= L'A' && p[0] <= L'Z')) &&
1990 if (p[2] == L'\0') {
1991 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1992 "Path is a drive name");
1993 return (ARCHIVE_FAILED);
1999 top = dest = src = p;
2000 /* Rewrite the path name if its character is a unusable. */
2001 for (; *p != L'\0'; p++) {
2002 if (*p == L':' || *p == L'*' || *p == L'?' || *p == L'"' ||
2003 *p == L'<' || *p == L'>' || *p == L'|')
2006 /* Skip leading '\'. */
2010 /* Scan the pathname one element at a time. */
2012 /* src points to first char after '\' */
2013 if (src[0] == L'\0') {
2015 } else if (src[0] == L'\\') {
2016 /* Found '\\'('//'), ignore second one. */
2019 } else if (src[0] == L'.') {
2020 if (src[1] == L'\0') {
2021 /* Ignore trailing '.' */
2023 } else if (src[1] == L'\\') {
2027 } else if (src[1] == L'.') {
2028 if (src[2] == L'\\' || src[2] == L'\0') {
2029 /* Conditionally warn about '..' */
2031 ARCHIVE_EXTRACT_SECURE_NODOTDOT) {
2032 archive_set_error(&a->archive,
2034 "Path contains '..'");
2035 return (ARCHIVE_FAILED);
2039 * Note: Under no circumstances do we
2040 * remove '..' elements. In
2041 * particular, restoring
2042 * '\foo\..\bar\' should create the
2043 * 'foo' dir as a side-effect.
2048 /* Copy current element, including leading '\'. */
2051 while (*src != L'\0' && *src != L'\\') {
2058 /* Skip '\' separator. */
2062 * We've just copied zero or more path elements, not including the
2067 * Nothing got copied. The path must have been something
2068 * like '.' or '\' or './' or '/././././/./'.
2075 /* Terminate the result. */
2077 return (ARCHIVE_OK);
2081 * Create the parent directory of the specified path, assuming path
2082 * is already in mutable storage.
2085 create_parent_dir(struct archive_write_disk *a, wchar_t *path)
2090 /* Remove tail element to obtain parent name. */
2091 slash = wcsrchr(path, L'\\');
2093 return (ARCHIVE_OK);
2095 r = create_dir(a, path);
2101 * Create the specified dir, recursing to create parents as necessary.
2103 * Returns ARCHIVE_OK if the path exists when we're done here.
2104 * Otherwise, returns ARCHIVE_FAILED.
2105 * Assumes path is in mutable storage; path is unchanged on exit.
2108 create_dir(struct archive_write_disk *a, wchar_t *path)
2110 BY_HANDLE_FILE_INFORMATION st;
2111 struct fixup_entry *le;
2112 wchar_t *slash, *base, *full;
2113 mode_t mode_final, mode, st_mode;
2116 /* Check for special names and just skip them. */
2117 slash = wcsrchr(path, L'\\');
2123 if (base[0] == L'\0' ||
2124 (base[0] == L'.' && base[1] == L'\0') ||
2125 (base[0] == L'.' && base[1] == L'.' && base[2] == L'\0')) {
2126 /* Don't bother trying to create null path, '.', or '..'. */
2127 if (slash != NULL) {
2129 r = create_dir(a, path);
2133 return (ARCHIVE_OK);
2137 * Yes, this should be stat() and not lstat(). Using lstat()
2138 * here loses the ability to extract through symlinks. Also note
2139 * that this should not use the a->st cache.
2141 if (file_information(a, path, &st, &st_mode, 0) == 0) {
2142 if (S_ISDIR(st_mode))
2143 return (ARCHIVE_OK);
2144 if ((a->flags & ARCHIVE_EXTRACT_NO_OVERWRITE)) {
2145 archive_set_error(&a->archive, EEXIST,
2146 "Can't create directory '%ls'", path);
2147 return (ARCHIVE_FAILED);
2149 if (disk_unlink(path) != 0) {
2150 archive_set_error(&a->archive, errno,
2151 "Can't create directory '%ls': "
2152 "Conflicting file cannot be removed",
2154 return (ARCHIVE_FAILED);
2156 } else if (errno != ENOENT && errno != ENOTDIR) {
2158 archive_set_error(&a->archive, errno,
2159 "Can't test directory '%ls'", path);
2160 return (ARCHIVE_FAILED);
2161 } else if (slash != NULL) {
2163 r = create_dir(a, path);
2165 if (r != ARCHIVE_OK)
2170 * Mode we want for the final restored directory. Per POSIX,
2171 * implicitly-created dirs must be created obeying the umask.
2172 * There's no mention whether this is different for privileged
2173 * restores (which the rest of this code handles by pretending
2174 * umask=0). I've chosen here to always obey the user's umask for
2175 * implicit dirs, even if _EXTRACT_PERM was specified.
2177 mode_final = DEFAULT_DIR_MODE & ~a->user_umask;
2178 /* Mode we want on disk during the restore process. */
2180 mode |= MINIMUM_DIR_MODE;
2181 mode &= MAXIMUM_DIR_MODE;
2183 * Apply __la_win_permissive_name_w to path in order to
2184 * remove '../' path string.
2186 full = __la_win_permissive_name_w(path);
2189 else if (CreateDirectoryW(full, NULL) != 0) {
2190 if (mode != mode_final) {
2191 le = new_fixup(a, path);
2192 le->fixup |=TODO_MODE_BASE;
2193 le->mode = mode_final;
2196 return (ARCHIVE_OK);
2198 la_dosmaperr(GetLastError());
2203 * Without the following check, a/b/../b/c/d fails at the
2204 * second visit to 'b', so 'd' can't be created. Note that we
2205 * don't add it to the fixup list here, as it's already been
2208 if (file_information(a, path, &st, &st_mode, 0) == 0 &&
2210 return (ARCHIVE_OK);
2212 archive_set_error(&a->archive, errno, "Failed to create dir '%ls'",
2214 return (ARCHIVE_FAILED);
2218 * Note: Although we can skip setting the user id if the desired user
2219 * id matches the current user, we cannot skip setting the group, as
2220 * many systems set the gid based on the containing directory. So
2221 * we have to perform a chown syscall if we want to set the SGID
2222 * bit. (The alternative is to stat() and then possibly chown(); it's
2223 * more efficient to skip the stat() and just always chown().) Note
2224 * that a successful chown() here clears the TODO_SGID_CHECK bit, which
2225 * allows set_mode to skip the stat() check for the GID.
2228 set_ownership(struct archive_write_disk *a)
2230 /* unfortunately, on win32 there is no 'root' user with uid 0,
2231 so we just have to try the chown and see if it works */
2233 /* If we know we can't change it, don't bother trying. */
2234 if (a->user_uid != 0 && a->user_uid != a->uid) {
2235 archive_set_error(&a->archive, errno,
2236 "Can't set UID=%jd", (intmax_t)a->uid);
2237 return (ARCHIVE_WARN);
2240 archive_set_error(&a->archive, errno,
2241 "Can't set user=%jd/group=%jd for %ls",
2242 (intmax_t)a->uid, (intmax_t)a->gid, a->name);
2243 return (ARCHIVE_WARN);
2247 set_times(struct archive_write_disk *a,
2248 HANDLE h, int mode, const wchar_t *name,
2249 time_t atime, long atime_nanos,
2250 time_t birthtime, long birthtime_nanos,
2251 time_t mtime, long mtime_nanos,
2252 time_t ctime_sec, long ctime_nanos)
2254 #define EPOC_TIME ARCHIVE_LITERAL_ULL(116444736000000000)
2255 #define WINTIME(sec, nsec) ((Int32x32To64(sec, 10000000) + EPOC_TIME)\
2256 + (((nsec)/1000)*10))
2259 ULARGE_INTEGER wintm;
2261 FILETIME fatime, fbtime, fmtime;
2263 (void)ctime_sec; /* UNUSED */
2264 (void)ctime_nanos; /* UNUSED */
2266 if (h != INVALID_HANDLE_VALUE) {
2272 return (ARCHIVE_OK);
2273 ws = __la_win_permissive_name_w(name);
2275 goto settimes_failed;
2276 hw = CreateFileW(ws, FILE_WRITE_ATTRIBUTES,
2277 0, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
2279 if (hw == INVALID_HANDLE_VALUE)
2280 goto settimes_failed;
2284 wintm.QuadPart = WINTIME(atime, atime_nanos);
2285 fatime.dwLowDateTime = wintm.LowPart;
2286 fatime.dwHighDateTime = wintm.HighPart;
2287 wintm.QuadPart = WINTIME(mtime, mtime_nanos);
2288 fmtime.dwLowDateTime = wintm.LowPart;
2289 fmtime.dwHighDateTime = wintm.HighPart;
2291 * SetFileTime() supports birthtime.
2293 if (birthtime > 0 || birthtime_nanos > 0) {
2294 wintm.QuadPart = WINTIME(birthtime, birthtime_nanos);
2295 fbtime.dwLowDateTime = wintm.LowPart;
2296 fbtime.dwHighDateTime = wintm.HighPart;
2300 if (SetFileTime(h, pfbtime, &fatime, &fmtime) == 0)
2301 goto settimes_failed;
2303 return (ARCHIVE_OK);
2307 archive_set_error(&a->archive, EINVAL, "Can't restore time");
2308 return (ARCHIVE_WARN);
2312 set_times_from_entry(struct archive_write_disk *a)
2314 time_t atime, birthtime, mtime, ctime_sec;
2315 long atime_nsec, birthtime_nsec, mtime_nsec, ctime_nsec;
2317 /* Suitable defaults. */
2318 atime = birthtime = mtime = ctime_sec = a->start_time;
2319 atime_nsec = birthtime_nsec = mtime_nsec = ctime_nsec = 0;
2321 /* If no time was provided, we're done. */
2322 if (!archive_entry_atime_is_set(a->entry)
2323 && !archive_entry_birthtime_is_set(a->entry)
2324 && !archive_entry_mtime_is_set(a->entry))
2325 return (ARCHIVE_OK);
2327 if (archive_entry_atime_is_set(a->entry)) {
2328 atime = archive_entry_atime(a->entry);
2329 atime_nsec = archive_entry_atime_nsec(a->entry);
2331 if (archive_entry_birthtime_is_set(a->entry)) {
2332 birthtime = archive_entry_birthtime(a->entry);
2333 birthtime_nsec = archive_entry_birthtime_nsec(a->entry);
2335 if (archive_entry_mtime_is_set(a->entry)) {
2336 mtime = archive_entry_mtime(a->entry);
2337 mtime_nsec = archive_entry_mtime_nsec(a->entry);
2339 if (archive_entry_ctime_is_set(a->entry)) {
2340 ctime_sec = archive_entry_ctime(a->entry);
2341 ctime_nsec = archive_entry_ctime_nsec(a->entry);
2344 return set_times(a, a->fh, a->mode, a->name,
2346 birthtime, birthtime_nsec,
2348 ctime_sec, ctime_nsec);
2352 set_mode(struct archive_write_disk *a, int mode)
2355 mode &= 07777; /* Strip off file type bits. */
2357 if (a->todo & TODO_SGID_CHECK) {
2359 * If we don't know the GID is right, we must stat()
2360 * to verify it. We can't just check the GID of this
2361 * process, since systems sometimes set GID from
2362 * the enclosing dir or based on ACLs.
2364 if ((r = lazy_stat(a)) != ARCHIVE_OK)
2369 /* While we're here, double-check the UID. */
2371 && (a->todo & TODO_SUID)) {
2374 a->todo &= ~TODO_SGID_CHECK;
2375 a->todo &= ~TODO_SUID_CHECK;
2376 } else if (a->todo & TODO_SUID_CHECK) {
2378 * If we don't know the UID is right, we can just check
2379 * the user, since all systems set the file UID from
2382 if (a->user_uid != a->uid) {
2385 a->todo &= ~TODO_SUID_CHECK;
2388 if (S_ISLNK(a->mode)) {
2391 * If this is a symlink, use lchmod(). If the
2392 * platform doesn't support lchmod(), just skip it. A
2393 * platform that doesn't provide a way to set
2394 * permissions on symlinks probably ignores
2395 * permissions on symlinks, so a failure here has no
2398 if (lchmod(a->name, mode) != 0) {
2399 archive_set_error(&a->archive, errno,
2400 "Can't set permissions to 0%o", (int)mode);
2404 } else if (!S_ISDIR(a->mode)) {
2406 * If it's not a symlink and not a dir, then use
2407 * fchmod() or chmod(), depending on whether we have
2408 * an fd. Dirs get their perms set during the
2409 * post-extract fixup, which is handled elsewhere.
2413 if (fchmod(a->fd, mode) != 0) {
2414 archive_set_error(&a->archive, errno,
2415 "Can't set permissions to 0%o", (int)mode);
2420 /* If this platform lacks fchmod(), then
2421 * we'll just use chmod(). */
2422 if (la_chmod(a->name, mode) != 0) {
2423 archive_set_error(&a->archive, errno,
2424 "Can't set permissions to 0%o", (int)mode);
2432 set_fflags(struct archive_write_disk *a)
2434 (void)a; /* UNUSED */
2435 return (ARCHIVE_OK);
2438 /* Default empty function body to satisfy mainline code. */
2440 set_acls(struct archive_write_disk *a, HANDLE h, const wchar_t *name,
2441 struct archive_acl *acl)
2443 (void)a; /* UNUSED */
2444 (void)h; /* UNUSED */
2445 (void)name; /* UNUSED */
2446 (void)acl; /* UNUSED */
2447 return (ARCHIVE_OK);
2451 * Restore extended attributes - stub implementation for unsupported systems
2454 set_xattrs(struct archive_write_disk *a)
2456 static int warning_done = 0;
2458 /* If there aren't any extended attributes, then it's okay not
2459 * to extract them, otherwise, issue a single warning. */
2460 if (archive_entry_xattr_count(a->entry) != 0 && !warning_done) {
2462 archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
2463 "Cannot restore extended attributes on this system");
2464 return (ARCHIVE_WARN);
2466 /* Warning was already emitted; suppress further warnings. */
2467 return (ARCHIVE_OK);
2471 fileTimeToUtc(const FILETIME *filetime, time_t *t, long *ns)
2475 utc.HighPart = filetime->dwHighDateTime;
2476 utc.LowPart = filetime->dwLowDateTime;
2477 if (utc.QuadPart >= EPOC_TIME) {
2478 utc.QuadPart -= EPOC_TIME;
2479 /* milli seconds base */
2480 *t = (time_t)(utc.QuadPart / 10000000);
2481 /* nano seconds base */
2482 *ns = (long)(utc.QuadPart % 10000000) * 100;
2489 * Test if file on disk is older than entry.
2492 older(BY_HANDLE_FILE_INFORMATION *st, struct archive_entry *entry)
2497 fileTimeToUtc(&st->ftLastWriteTime, &sec, &nsec);
2498 /* First, test the seconds and return if we have a definite answer. */
2499 /* Definitely older. */
2500 if (sec < archive_entry_mtime(entry))
2502 /* Definitely younger. */
2503 if (sec > archive_entry_mtime(entry))
2505 if (nsec < archive_entry_mtime_nsec(entry))
2507 /* Same age or newer, so not older. */
2511 #endif /* _WIN32 && !__CYGWIN__ */