2 * Copyright (c) 2010, Frank Lahm <franklahm@googlemail.com>
3 * Copyright (c) 1988, 1993, 1994
4 * The Regents of the University of California. All rights reserved.
6 * This code is derived from software contributed to Berkeley by
7 * David Hitz of Auspex Systems Inc.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * Cp copies source files to target files.
37 * The global PATH_T structure "to" always contains the path to the
38 * current target file. Since fts(3) does not change directories,
39 * this path can be either absolute or dot-relative.
41 * The basic algorithm is to initialize "to" and use fts(3) to traverse
42 * the file hierarchy rooted in the argument list. A trivial case is the
43 * case of 'cp file1 file2'. The more interesting case is the case of
44 * 'cp file1 file2 ... fileN dir' where the hierarchy is traversed and the
45 * path (relative to the root of the traversal) is appended to dir (stored
46 * in "to") to form the final target path.
51 #endif /* HAVE_CONFIG_H */
53 #include <sys/types.h>
63 #include <atalk/ftw.h>
64 #include <atalk/adouble.h>
65 #include <atalk/vfs.h>
66 #include <atalk/util.h>
67 #include <atalk/unix.h>
68 #include <atalk/volume.h>
69 #include <atalk/volinfo.h>
70 #include <atalk/bstrlib.h>
71 #include <atalk/bstradd.h>
72 #include <atalk/queue.h>
76 #define STRIP_TRAILING_SLASH(p) { \
77 while ((p).p_end > (p).p_path + 1 && (p).p_end[-1] == '/') \
81 static char emptystring[] = "";
83 PATH_T to = { to.p_path, emptystring, "" };
84 enum op { FILE_TO_FILE, FILE_TO_DIR, DIR_TO_DNE };
86 int fflag, iflag, lflag, nflag, pflag, vflag;
89 cnid_t ppdid, pdid, did; /* current dir CNID and parent did*/
91 static afpvol_t svolume, dvolume;
94 static volatile sig_atomic_t alarmed;
95 static int badcp, rval;
96 static int ftw_options = FTW_MOUNT | FTW_PHYS | FTW_ACTIONRETVAL;
98 static char *netatalk_dirs[] = {
105 /* Forward declarations */
106 static int copy(const char *fpath, const struct stat *sb, int tflag, struct FTW *ftwbuf);
107 static int ftw_copy_file(const struct FTW *, const char *, const struct stat *, int);
108 static int ftw_copy_link(const struct FTW *, const char *, const struct stat *, int);
109 static int setfile(const struct stat *, int);
110 static int preserve_dir_acls(const struct stat *, char *, char *);
111 static int preserve_fd_acls(int, int);
114 Check for netatalk special folders e.g. ".AppleDB" or ".AppleDesktop"
115 Returns pointer to name or NULL.
117 static const char *check_netatalk_dirs(const char *name)
121 for (c=0; netatalk_dirs[c]; c++) {
122 if ((strcmp(name, netatalk_dirs[c])) == 0)
123 return netatalk_dirs[c];
128 static void upfunc(void)
136 catch SIGINT and SIGTERM which cause clean exit. Ignore anything else.
139 static void sig_handler(int signo)
145 static void set_signal(void)
149 sv.sa_handler = sig_handler;
150 sv.sa_flags = SA_RESTART;
151 sigemptyset(&sv.sa_mask);
152 if (sigaction(SIGTERM, &sv, NULL) < 0)
153 ERROR("error in sigaction(SIGTERM): %s", strerror(errno));
155 if (sigaction(SIGINT, &sv, NULL) < 0)
156 ERROR("error in sigaction(SIGINT): %s", strerror(errno));
158 memset(&sv, 0, sizeof(struct sigaction));
159 sv.sa_handler = SIG_IGN;
160 sigemptyset(&sv.sa_mask);
162 if (sigaction(SIGABRT, &sv, NULL) < 0)
163 ERROR("error in sigaction(SIGABRT): %s", strerror(errno));
165 if (sigaction(SIGHUP, &sv, NULL) < 0)
166 ERROR("error in sigaction(SIGHUP): %s", strerror(errno));
168 if (sigaction(SIGQUIT, &sv, NULL) < 0)
169 ERROR("error in sigaction(SIGQUIT): %s", strerror(errno));
172 static void usage_cp(void)
175 "Usage: ad cp [-R [-P]] [-pvf] <source_file> <target_file>\n"
176 "Usage: ad cp [-R [-P]] [-pvfx] <source_file [source_file ...]> <target_directory>\n"
181 int ad_cp(int argc, char *argv[])
183 struct stat to_stat, tmp_stat;
184 int r, ch, have_trailing_slash;
191 ppdid = pdid = htonl(1);
194 while ((ch = getopt(argc, argv, "Rafilnpvx")) != -1)
225 ftw_options |= FTW_MOUNT;
240 /* Save the target base in "to". */
241 target = argv[--argc];
242 if ((strlcpy(to.p_path, target, PATH_MAX)) >= PATH_MAX)
243 ERROR("%s: name too long", target);
245 to.p_end = to.p_path + strlen(to.p_path);
246 if (to.p_path == to.p_end) {
250 have_trailing_slash = (to.p_end[-1] == '/');
251 if (have_trailing_slash)
252 STRIP_TRAILING_SLASH(to);
253 to.target_end = to.p_end;
255 /* Set end of argument list */
259 * Cp has two distinct cases:
261 * cp [-R] source target
262 * cp [-R] source1 ... sourceN directory
264 * In both cases, source can be either a file or a directory.
266 * In (1), the target becomes a copy of the source. That is, if the
267 * source is a file, the target will be a file, and likewise for
270 * In (2), the real target is not directory, but "directory/source".
272 r = stat(to.p_path, &to_stat);
273 if (r == -1 && errno != ENOENT)
274 ERROR("%s", to.p_path);
275 if (r == -1 || !S_ISDIR(to_stat.st_mode)) {
277 * Case (1). Target is not a directory.
280 ERROR("%s is not a directory", to.p_path);
283 * Need to detect the case:
285 * Where dir is a directory and foo does not exist, where
286 * we want pathname concatenations turned on but not for
287 * the initial mkdir().
290 lstat(*argv, &tmp_stat);
292 if (S_ISDIR(tmp_stat.st_mode) && Rflag)
299 if (have_trailing_slash && type == FILE_TO_FILE) {
301 ERROR("directory %s does not exist", to.p_path);
303 ERROR("%s is not a directory", to.p_path);
307 * Case (2). Target is a directory.
312 * Keep an inverted copy of the umask, for use in correcting
313 * permissions on created directories when not using -p.
319 /* Inhereting perms in ad_mkdir etc requires this */
323 /* Load .volinfo file for destination*/
324 openvol(to.p_path, &dvolume);
326 for (int i = 0; argv[i] != NULL; i++) {
327 /* Load .volinfo file for source */
328 openvol(argv[i], &svolume);
330 if (nftw(argv[i], copy, upfunc, 20, ftw_options) == -1) {
334 SLOG("Error: %s: %s", argv[i], strerror(errno));
343 static int copy(const char *path,
344 const struct stat *statp,
359 const char *dir = strrchr(path, '/');
364 if (check_netatalk_dirs(dir) != NULL)
365 return FTW_SKIP_SUBTREE;
368 * If we are in case (2) above, we need to append the
369 * source name to the target name.
371 if (type != FILE_TO_FILE) {
373 * Need to remember the roots of traversals to create
374 * correct pathnames. If there's a directory being
375 * copied to a non-existent directory, e.g.
376 * cp -R a/dir noexist
377 * the resulting path name should be noexist/foo, not
378 * noexist/dir/foo (where foo is a file in dir), which
379 * is the case where the target exists.
381 * Also, check for "..". This is for correct path
382 * concatenation for paths ending in "..", e.g.
384 * Paths ending in ".." are changed to ".". This is
385 * tricky, but seems the easiest way to fix the problem.
388 * Since the first level MUST be FTS_ROOTLEVEL, base
389 * is always initialized.
391 if (ftw->level == 0) {
392 if (type != DIR_TO_DNE) {
395 if (strcmp(&path[base], "..") == 0)
402 nlen = strlen(path) - base;
403 target_mid = to.target_end;
404 if (*p != '/' && target_mid[-1] != '/')
407 if (target_mid - to.p_path + nlen >= PATH_MAX) {
408 SLOG("%s%s: name too long (not copied)", to.p_path, p);
412 (void)strncat(target_mid, p, nlen);
413 to.p_end = target_mid + nlen;
415 STRIP_TRAILING_SLASH(to);
418 /* Not an error but need to remember it happened */
419 if (stat(to.p_path, &to_stat) == -1)
422 if (to_stat.st_dev == statp->st_dev &&
423 to_stat.st_ino == statp->st_ino) {
424 SLOG("%s and %s are identical (not copied).", to.p_path, path);
426 if (S_ISDIR(statp->st_mode))
427 /* without using glibc extension FTW_ACTIONRETVAL cant handle this */
428 return FTW_SKIP_SUBTREE;
431 if (!S_ISDIR(statp->st_mode) &&
432 S_ISDIR(to_stat.st_mode)) {
433 SLOG("cannot overwrite directory %s with "
442 /* Convert basename to appropiate volume encoding */
443 if (dvolume.volinfo.v_path) {
444 if ((convert_dots_encoding(&svolume, &dvolume, to.p_path, MAXPATHLEN)) == -1) {
445 SLOG("Error converting name for %s", to.p_path);
451 switch (statp->st_mode & S_IFMT) {
453 if (ftw_copy_link(ftw, path, statp, !dne))
458 SLOG("%s is a directory", path);
463 * If the directory doesn't exist, create the new
464 * one with the from file mode plus owner RWX bits,
465 * modified by the umask. Trade-off between being
466 * able to write the directory (if from directory is
467 * 555) and not causing a permissions race. If the
468 * umask blocks owner writes, we fail..
471 if (mkdir(to.p_path, statp->st_mode | S_IRWXU) < 0)
472 ERROR("mkdir: %s: %s", to.p_path, strerror(errno));
473 } else if (!S_ISDIR(to_stat.st_mode)) {
475 ERROR("%s", to.p_path);
478 /* Create ad dir and copy ".Parent" */
479 if (dvolume.volinfo.v_path && dvolume.volinfo.v_adouble == AD_VERSION2) {
481 /* Create ".AppleDouble" dir */
482 mode_t omask = umask(0);
483 bstring addir = bfromcstr(to.p_path);
484 bcatcstr(addir, "/.AppleDouble");
485 mkdir(cfrombstr(addir), 02777);
488 if (svolume.volinfo.v_path && svolume.volinfo.v_adouble == AD_VERSION2) {
489 /* copy ".Parent" file */
490 SLOG("Copying adouble for %s -> %s", path, to.p_path);
491 if (dvolume.volume.vfs->vfs_copyfile(&dvolume.volume, -1, path, to.p_path)) {
492 SLOG("Error copying adouble for %s -> %s", path, to.p_path);
498 /* Get CNID of Parent and add new childir to CNID database */
500 did = cnid_for_path(&dvolume.volinfo, &dvolume.volume, to.p_path, &pdid);
504 if (stat(to.p_path, &st) != 0) {
508 ad_init(&ad, dvolume.volinfo.v_adouble, dvolume.volinfo.v_ad_options);
509 if (ad_open_metadata(to.p_path, ADFLAGS_DIR, O_RDWR | O_CREAT, &ad) != 0) {
510 ERROR("Error opening adouble for: %s", to.p_path);
512 SLOG("Setting CNID %u for %s", ntohl(did), to.p_path);
513 ad_setid( &ad, st.st_dev, st.st_ino, did, pdid, dvolume.db_stamp);
514 ad_setname(&ad, utompath(&dvolume.volinfo, basename(to.p_path)));
515 ad_setdate(&ad, AD_DATE_CREATE | AD_DATE_UNIX, st.st_mtime);
516 ad_setdate(&ad, AD_DATE_MODIFY | AD_DATE_UNIX, st.st_mtime);
517 ad_setdate(&ad, AD_DATE_ACCESS | AD_DATE_UNIX, st.st_mtime);
518 ad_setdate(&ad, AD_DATE_BACKUP, AD_DATE_START);
520 ad_close_metadata(&ad);
526 if (setfile(statp, -1))
529 if (preserve_dir_acls(statp, curr->fts_accpath, to.p_path) != 0)
537 SLOG("%s is a device file (not copied).", path);
540 SLOG("%s is a socket (not copied).", path);
543 SLOG("%s is a FIFO (not copied).", path);
546 if (ftw_copy_file(ftw, path, statp, dne))
549 if (dvolume.volinfo.v_path && dvolume.volinfo.v_adouble == AD_VERSION2) {
551 mode_t omask = umask(0);
552 if (svolume.volinfo.v_path && svolume.volinfo.v_adouble == AD_VERSION2) {
554 if (dvolume.volume.vfs->vfs_copyfile(&dvolume.volume, -1, path, to.p_path)) {
555 SLOG("Error copying adouble for %s -> %s", path, to.p_path);
561 /* Get CNID of Parent and add new childir to CNID database */
563 cnid_t cnid = cnid_for_path(&dvolume.volinfo, &dvolume.volume, to.p_path, &did);
567 if (stat(to.p_path, &st) != 0) {
571 ad_init(&ad, dvolume.volinfo.v_adouble, dvolume.volinfo.v_ad_options);
572 if (ad_open_metadata(to.p_path, 0, O_RDWR | O_CREAT, &ad) != 0) {
573 ERROR("Error opening adouble for: %s", to.p_path);
575 SLOG("setid: DID: %u, CNID: %u, %s", ntohl(did), ntohl(cnid), to.p_path);
576 ad_setid( &ad, st.st_dev, st.st_ino, cnid, did, dvolume.db_stamp);
577 ad_setname(&ad, utompath(&dvolume.volinfo, basename(to.p_path)));
578 ad_setdate(&ad, AD_DATE_CREATE | AD_DATE_UNIX, st.st_mtime);
579 ad_setdate(&ad, AD_DATE_MODIFY | AD_DATE_UNIX, st.st_mtime);
580 ad_setdate(&ad, AD_DATE_ACCESS | AD_DATE_UNIX, st.st_mtime);
581 ad_setdate(&ad, AD_DATE_BACKUP, AD_DATE_START);
583 ad_close_metadata(&ad);
589 (void)printf("%s -> %s\n", path, to.p_path);
594 /* Memory strategy threshold, in pages: if physmem is larger then this, use a large buffer */
595 #define PHYSPAGES_THRESHOLD (32*1024)
597 /* Maximum buffer size in bytes - do not allow it to grow larger than this */
598 #define BUFSIZE_MAX (2*1024*1024)
600 /* Small (default) buffer size in bytes. It's inefficient for this to be smaller than MAXPHYS */
601 #define MAXPHYS (64 * 1024)
602 #define BUFSIZE_SMALL (MAXPHYS)
604 static int ftw_copy_file(const struct FTW *entp,
606 const struct stat *sp,
609 static char *buf = NULL;
610 static size_t bufsize;
614 int ch, checkch, from_fd = 0, rcount, rval, to_fd = 0;
618 if ((from_fd = open(spath, O_RDONLY, 0)) == -1) {
619 SLOG("%s: %s", spath, strerror(errno));
624 * If the file exists and we're interactive, verify with the user.
625 * If the file DNE, set the mode to be the from file, minus setuid
626 * bits, modified by the umask; arguably wrong, but it makes copying
627 * executables work right and it's been that way forever. (The
628 * other choice is 666 or'ed with the execute bits on the from file
629 * modified by the umask.)
632 #define YESNO "(y/n [n]) "
635 printf("%s not overwritten\n", to.p_path);
636 (void)close(from_fd);
639 (void)fprintf(stderr, "overwrite %s? %s",
641 checkch = ch = getchar();
642 while (ch != '\n' && ch != EOF)
644 if (checkch != 'y' && checkch != 'Y') {
645 (void)close(from_fd);
646 (void)fprintf(stderr, "not overwritten\n");
652 /* remove existing destination file name,
653 * create a new file */
654 (void)unlink(to.p_path);
655 (void)dvolume.volume.vfs->vfs_deletefile(&dvolume.volume, -1, to.p_path);
657 to_fd = open(to.p_path, O_WRONLY | O_TRUNC | O_CREAT,
658 sp->st_mode & ~(S_ISUID | S_ISGID));
661 /* overwrite existing destination file name */
662 to_fd = open(to.p_path, O_WRONLY | O_TRUNC, 0);
666 to_fd = open(to.p_path, O_WRONLY | O_TRUNC | O_CREAT,
667 sp->st_mode & ~(S_ISUID | S_ISGID));
671 SLOG("%s: %s", to.p_path, strerror(errno));
672 (void)close(from_fd);
680 * Mmap and write if less than 8M (the limit is so we don't totally
681 * trash memory on big files. This is really a minor hack, but it
682 * wins some CPU back.
683 * Some filesystems, such as smbnetfs, don't support mmap,
684 * so this is a best-effort attempt.
687 if (S_ISREG(sp->st_mode) && sp->st_size > 0 &&
688 sp->st_size <= 8 * 1024 * 1024 &&
689 (p = mmap(NULL, (size_t)sp->st_size, PROT_READ,
690 MAP_SHARED, from_fd, (off_t)0)) != MAP_FAILED) {
692 for (bufp = p, wresid = sp->st_size; ;
693 bufp += wcount, wresid -= (size_t)wcount) {
694 wcount = write(to_fd, bufp, wresid);
698 if (wcount >= (ssize_t)wresid)
701 if (wcount != (ssize_t)wresid) {
702 SLOG("%s: %s", to.p_path, strerror(errno));
705 /* Some systems don't unmap on close(2). */
706 if (munmap(p, sp->st_size) < 0) {
707 SLOG("%s: %s", spath, strerror(errno));
713 * Note that buf and bufsize are static. If
714 * malloc() fails, it will fail at the start
715 * and not copy only some files.
717 if (sysconf(_SC_PHYS_PAGES) >
719 bufsize = MIN(BUFSIZE_MAX, MAXPHYS * 8);
721 bufsize = BUFSIZE_SMALL;
722 buf = malloc(bufsize);
724 ERROR("Not enough memory");
728 while ((rcount = read(from_fd, buf, bufsize)) > 0) {
729 for (bufp = buf, wresid = rcount; ;
730 bufp += wcount, wresid -= wcount) {
731 wcount = write(to_fd, bufp, wresid);
735 if (wcount >= (ssize_t)wresid)
738 if (wcount != (ssize_t)wresid) {
739 SLOG("%s: %s", to.p_path, strerror(errno));
745 SLOG("%s: %s", spath, strerror(errno));
750 if (link(spath, to.p_path)) {
751 SLOG("%s", to.p_path);
757 * Don't remove the target even after an error. The target might
758 * not be a regular file, or its attributes might be important,
759 * or its contents might be irreplaceable. It would only be safe
760 * to remove it if we created it and its length is 0.
764 if (pflag && setfile(sp, to_fd))
766 if (pflag && preserve_fd_acls(from_fd, to_fd) != 0)
769 SLOG("%s: %s", to.p_path, strerror(errno));
774 (void)close(from_fd);
779 static int ftw_copy_link(const struct FTW *p,
781 const struct stat *sstp,
785 char llink[PATH_MAX];
787 if ((len = readlink(spath, llink, sizeof(llink) - 1)) == -1) {
788 SLOG("readlink: %s: %s", spath, strerror(errno));
792 if (exists && unlink(to.p_path)) {
793 SLOG("unlink: %s: %s", to.p_path, strerror(errno));
796 if (symlink(llink, to.p_path)) {
797 SLOG("symlink: %s: %s", llink, strerror(errno));
800 return (pflag ? setfile(sstp, -1) : 0);
803 static int setfile(const struct stat *fs, int fd)
805 static struct timeval tv[2];
807 int rval, gotstat, islink, fdval;
812 islink = !fdval && S_ISLNK(fs->st_mode);
813 mode = fs->st_mode & (S_ISUID | S_ISGID | S_ISVTX | S_IRWXU | S_IRWXG | S_IRWXO);
815 TIMESPEC_TO_TIMEVAL(&tv[0], &fs->st_atim);
816 TIMESPEC_TO_TIMEVAL(&tv[1], &fs->st_mtim);
817 if (islink ? lutimes(to.p_path, tv) : utimes(to.p_path, tv)) {
818 SLOG("%sutimes: %s", islink ? "l" : "", to.p_path);
821 if (fdval ? fstat(fd, &ts) :
822 (islink ? lstat(to.p_path, &ts) : stat(to.p_path, &ts)))
826 ts.st_mode &= S_ISUID | S_ISGID | S_ISVTX |
827 S_IRWXU | S_IRWXG | S_IRWXO;
830 * Changing the ownership probably won't succeed, unless we're root
831 * or POSIX_CHOWN_RESTRICTED is not set. Set uid/gid before setting
832 * the mode; current BSD behavior is to remove all setuid bits on
833 * chown. If chown fails, lose setuid/setgid bits.
835 if (!gotstat || fs->st_uid != ts.st_uid || fs->st_gid != ts.st_gid)
836 if (fdval ? fchown(fd, fs->st_uid, fs->st_gid) :
837 (islink ? lchown(to.p_path, fs->st_uid, fs->st_gid) :
838 chown(to.p_path, fs->st_uid, fs->st_gid))) {
839 if (errno != EPERM) {
840 SLOG("chown: %s: %s", to.p_path, strerror(errno));
843 mode &= ~(S_ISUID | S_ISGID);
846 if (!gotstat || mode != ts.st_mode)
847 if (fdval ? fchmod(fd, mode) : chmod(to.p_path, mode)) {
848 SLOG("chmod: %s: %s", to.p_path, strerror(errno));
853 if (!gotstat || fs->st_flags != ts.st_flags)
855 fchflags(fd, fs->st_flags) :
856 (islink ? lchflags(to.p_path, fs->st_flags) :
857 chflags(to.p_path, fs->st_flags))) {
858 SLOG("chflags: %s: %s", to.p_path, strerror(errno));
866 static int preserve_fd_acls(int source_fd, int dest_fd)
871 int acl_supported = 0, ret, trivial;
873 ret = fpathconf(source_fd, _PC_ACL_NFS4);
876 acl_type = ACL_TYPE_NFS4;
877 } else if (ret < 0 && errno != EINVAL) {
878 warn("fpathconf(..., _PC_ACL_NFS4) failed for %s", to.p_path);
881 if (acl_supported == 0) {
882 ret = fpathconf(source_fd, _PC_ACL_EXTENDED);
885 acl_type = ACL_TYPE_ACCESS;
886 } else if (ret < 0 && errno != EINVAL) {
887 warn("fpathconf(..., _PC_ACL_EXTENDED) failed for %s",
892 if (acl_supported == 0)
895 acl = acl_get_fd_np(source_fd, acl_type);
897 warn("failed to get acl entries while setting %s", to.p_path);
900 if (acl_is_trivial_np(acl, &trivial)) {
901 warn("acl_is_trivial() failed for %s", to.p_path);
909 if (acl_set_fd_np(dest_fd, acl, acl_type) < 0) {
910 warn("failed to set acl entries for %s", to.p_path);
919 static int preserve_dir_acls(const struct stat *fs, char *source_dir, char *dest_dir)
922 acl_t (*aclgetf)(const char *, acl_type_t);
923 int (*aclsetf)(const char *, acl_type_t, acl_t);
927 int acl_supported = 0, ret, trivial;
929 ret = pathconf(source_dir, _PC_ACL_NFS4);
932 acl_type = ACL_TYPE_NFS4;
933 } else if (ret < 0 && errno != EINVAL) {
934 warn("fpathconf(..., _PC_ACL_NFS4) failed for %s", source_dir);
937 if (acl_supported == 0) {
938 ret = pathconf(source_dir, _PC_ACL_EXTENDED);
941 acl_type = ACL_TYPE_ACCESS;
942 } else if (ret < 0 && errno != EINVAL) {
943 warn("fpathconf(..., _PC_ACL_EXTENDED) failed for %s",
948 if (acl_supported == 0)
952 * If the file is a link we will not follow it
954 if (S_ISLNK(fs->st_mode)) {
955 aclgetf = acl_get_link_np;
956 aclsetf = acl_set_link_np;
958 aclgetf = acl_get_file;
959 aclsetf = acl_set_file;
961 if (acl_type == ACL_TYPE_ACCESS) {
963 * Even if there is no ACL_TYPE_DEFAULT entry here, a zero
964 * size ACL will be returned. So it is not safe to simply
965 * check the pointer to see if the default ACL is present.
967 acl = aclgetf(source_dir, ACL_TYPE_DEFAULT);
969 warn("failed to get default acl entries on %s",
973 aclp = &acl->ats_acl;
974 if (aclp->acl_cnt != 0 && aclsetf(dest_dir,
975 ACL_TYPE_DEFAULT, acl) < 0) {
976 warn("failed to set default acl entries on %s",
983 acl = aclgetf(source_dir, acl_type);
985 warn("failed to get acl entries on %s", source_dir);
988 if (acl_is_trivial_np(acl, &trivial)) {
989 warn("acl_is_trivial() failed on %s", source_dir);
997 if (aclsetf(dest_dir, acl_type, acl) < 0) {
998 warn("failed to set acl entries on %s", dest_dir);