2 * Copyright (c) 1989, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Ken Smith of The State University of New York at Buffalo.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 static char const copyright[] =
36 "@(#) Copyright (c) 1989, 1993, 1994\n\
37 The Regents of the University of California. All rights reserved.\n";
41 static char sccsid[] = "@(#)mv.c 8.2 (Berkeley) 4/2/94";
44 #include <sys/cdefs.h>
45 __FBSDID("$FreeBSD$");
47 #include <sys/types.h>
49 #include <sys/param.h>
53 #include <sys/mount.h>
68 /* Exit code for a failed exec. */
69 #define EXEC_FAILED 127
71 static int fflg, hflg, iflg, nflg, vflg;
73 static int copy(const char *, const char *);
74 static int do_move(const char *, const char *);
75 static int fastcopy(const char *, const char *, struct stat *);
76 static void usage(void);
77 static void preserve_fd_acls(int source_fd, int dest_fd, const char *source_path,
78 const char *dest_path);
81 main(int argc, char *argv[])
90 while ((ch = getopt(argc, argv, "fhinv")) != -1)
120 * If the stat on the target fails or the target isn't a directory,
121 * try the move. More than 2 arguments is an error in this case.
123 if (stat(argv[argc - 1], &sb) || !S_ISDIR(sb.st_mode)) {
125 errx(1, "%s is not a directory", argv[argc - 1]);
126 exit(do_move(argv[0], argv[1]));
130 * If -h was specified, treat the target as a symlink instead of
136 if (lstat(argv[1], &sb) == 0 && S_ISLNK(sb.st_mode))
137 exit(do_move(argv[0], argv[1]));
140 /* It's a directory, move each file into it. */
141 if (strlen(argv[argc - 1]) > sizeof(path) - 1)
142 errx(1, "%s: destination pathname too long", *argv);
143 (void)strcpy(path, argv[argc - 1]);
144 baselen = strlen(path);
145 endp = &path[baselen];
146 if (!baselen || *(endp - 1) != '/') {
150 for (rval = 0; --argc; ++argv) {
152 * Find the last component of the source pathname. It
153 * may have trailing slashes.
155 p = *argv + strlen(*argv);
156 while (p != *argv && p[-1] == '/')
158 while (p != *argv && p[-1] != '/')
161 if ((baselen + (len = strlen(p))) >= PATH_MAX) {
162 warnx("%s: destination pathname too long", *argv);
165 memmove(endp, p, (size_t)len + 1);
166 if (do_move(*argv, path))
174 do_move(const char *from, const char *to)
181 * Check access. If interactive and file exists, ask user if it
182 * should be replaced. Otherwise if file exists but isn't writable
183 * make sure the user wants to clobber it.
185 if (!fflg && !access(to, F_OK)) {
187 /* prompt only if source exist */
188 if (lstat(from, &sb) == -1) {
193 #define YESNO "(y/n [n]) "
197 printf("%s not overwritten\n", to);
200 (void)fprintf(stderr, "overwrite %s? %s", to, YESNO);
202 } else if (access(to, W_OK) && !stat(to, &sb) && isatty(STDIN_FILENO)) {
203 strmode(sb.st_mode, modep);
204 (void)fprintf(stderr, "override %s%s%s/%s for %s? %s",
205 modep + 1, modep[9] == ' ' ? "" : " ",
206 user_from_uid((unsigned long)sb.st_uid, 0),
207 group_from_gid((unsigned long)sb.st_gid, 0), to, YESNO);
211 first = ch = getchar();
212 while (ch != '\n' && ch != EOF)
214 if (first != 'y' && first != 'Y') {
215 (void)fprintf(stderr, "not overwritten\n");
221 * Rename on FreeBSD will fail with EISDIR and ENOTDIR, before failing
222 * with EXDEV. Therefore, copy() doesn't have to perform the checks
223 * specified in the Step 3 of the POSIX mv specification.
225 if (!rename(from, to)) {
227 printf("%s -> %s\n", from, to);
231 if (errno == EXDEV) {
236 * If the source is a symbolic link and is on another
237 * filesystem, it can be recreated at the destination.
239 if (lstat(from, &sb) == -1) {
243 if (!S_ISLNK(sb.st_mode)) {
244 /* Can't mv(1) a mount point. */
245 if (realpath(from, path) == NULL) {
246 warn("cannot resolve %s: %s", from, path);
249 if (!statfs(path, &sfs) &&
250 !strcmp(path, sfs.f_mntonname)) {
251 warnx("cannot rename a mount point");
256 warn("rename %s to %s", from, to);
261 * If rename fails because we're trying to cross devices, and
262 * it's a regular file, do the copy internally; otherwise, use
265 if (lstat(from, &sb)) {
269 return (S_ISREG(sb.st_mode) ?
270 fastcopy(from, to, &sb) : copy(from, to));
274 fastcopy(const char *from, const char *to, struct stat *sbp)
276 struct timespec ts[2];
277 static u_int blen = MAXPHYS;
278 static char *bp = NULL;
280 int nread, from_fd, to_fd;
282 if ((from_fd = open(from, O_RDONLY, 0)) < 0) {
283 warn("fastcopy: open() failed (from): %s", from);
286 if (bp == NULL && (bp = malloc((size_t)blen)) == NULL) {
287 warnx("malloc(%u) failed", blen);
288 (void)close(from_fd);
292 open(to, O_CREAT | O_EXCL | O_TRUNC | O_WRONLY, 0)) < 0) {
293 if (errno == EEXIST && unlink(to) == 0)
295 warn("fastcopy: open() failed (to): %s", to);
296 (void)close(from_fd);
299 while ((nread = read(from_fd, bp, (size_t)blen)) > 0)
300 if (write(to_fd, bp, (size_t)nread) != nread) {
301 warn("fastcopy: write() failed: %s", to);
305 warn("fastcopy: read() failed: %s", from);
307 warn("%s: remove", to);
308 (void)close(from_fd);
313 oldmode = sbp->st_mode & ALLPERMS;
314 if (fchown(to_fd, sbp->st_uid, sbp->st_gid)) {
315 warn("%s: set owner/group (was: %lu/%lu)", to,
316 (u_long)sbp->st_uid, (u_long)sbp->st_gid);
317 if (oldmode & (S_ISUID | S_ISGID)) {
319 "%s: owner/group changed; clearing suid/sgid (mode was 0%03o)",
321 sbp->st_mode &= ~(S_ISUID | S_ISGID);
324 if (fchmod(to_fd, sbp->st_mode))
325 warn("%s: set mode (was: 0%03o)", to, oldmode);
327 * POSIX 1003.2c states that if _POSIX_ACL_EXTENDED is in effect
328 * for dest_file, then its ACLs shall reflect the ACLs of the
331 preserve_fd_acls(from_fd, to_fd, from, to);
332 (void)close(from_fd);
335 * NFS doesn't support chflags; ignore errors unless there's reason
336 * to believe we're losing bits. (Note, this still won't be right
337 * if the server supports flags and we were trying to *remove* flags
338 * on a file that we copied, i.e., that we didn't create.)
341 if (fchflags(to_fd, sbp->st_flags))
342 if (errno != EOPNOTSUPP || sbp->st_flags != 0)
343 warn("%s: set flags (was: 0%07o)", to, sbp->st_flags);
345 ts[0] = sbp->st_atim;
346 ts[1] = sbp->st_mtim;
347 if (utimensat(AT_FDCWD, to, ts, 0))
348 warn("%s: set times", to);
356 warn("%s: remove", from);
360 printf("%s -> %s\n", from, to);
365 copy(const char *from, const char *to)
370 if (lstat(to, &sb) == 0) {
371 /* Destination path exists. */
372 if (S_ISDIR(sb.st_mode)) {
373 if (rmdir(to) != 0) {
374 warn("rmdir %s", to);
378 if (unlink(to) != 0) {
379 warn("unlink %s", to);
383 } else if (errno != ENOENT) {
388 /* Copy source to destination. */
389 if (!(pid = vfork())) {
390 execl(_PATH_CP, "mv", vflg ? "-PRpv" : "-PRp", "--", from, to,
394 if (waitpid(pid, &status, 0) == -1) {
395 warn("%s %s %s: waitpid", _PATH_CP, from, to);
398 if (!WIFEXITED(status)) {
399 warnx("%s %s %s: did not terminate normally",
403 switch (WEXITSTATUS(status)) {
407 warnx("%s %s %s: exec failed", _PATH_CP, from, to);
410 warnx("%s %s %s: terminated with %d (non-zero) status",
411 _PATH_CP, from, to, WEXITSTATUS(status));
415 /* Delete the source. */
416 if (!(pid = vfork())) {
417 execl(_PATH_RM, "mv", "-rf", "--", from, (char *)NULL);
420 if (waitpid(pid, &status, 0) == -1) {
421 warn("%s %s: waitpid", _PATH_RM, from);
424 if (!WIFEXITED(status)) {
425 warnx("%s %s: did not terminate normally", _PATH_RM, from);
428 switch (WEXITSTATUS(status)) {
432 warnx("%s %s: exec failed", _PATH_RM, from);
435 warnx("%s %s: terminated with %d (non-zero) status",
436 _PATH_RM, from, WEXITSTATUS(status));
443 preserve_fd_acls(int source_fd, int dest_fd, const char *source_path,
444 const char *dest_path)
448 int acl_supported = 0, ret, trivial;
450 ret = fpathconf(source_fd, _PC_ACL_NFS4);
453 acl_type = ACL_TYPE_NFS4;
454 } else if (ret < 0 && errno != EINVAL) {
455 warn("fpathconf(..., _PC_ACL_NFS4) failed for %s",
459 if (acl_supported == 0) {
460 ret = fpathconf(source_fd, _PC_ACL_EXTENDED);
463 acl_type = ACL_TYPE_ACCESS;
464 } else if (ret < 0 && errno != EINVAL) {
465 warn("fpathconf(..., _PC_ACL_EXTENDED) failed for %s",
470 if (acl_supported == 0)
473 acl = acl_get_fd_np(source_fd, acl_type);
475 warn("failed to get acl entries for %s", source_path);
478 if (acl_is_trivial_np(acl, &trivial)) {
479 warn("acl_is_trivial() failed for %s", source_path);
487 if (acl_set_fd_np(dest_fd, acl, acl_type) < 0) {
488 warn("failed to set acl entries for %s", dest_path);
499 (void)fprintf(stderr, "%s\n%s\n",
500 "usage: mv [-f | -i | -n] [-hv] source target",
501 " mv [-f | -i | -n] [-v] source ... directory");