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 * 3. 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
33 #include <sys/param.h>
37 #include <sys/mount.h>
53 /* Exit code for a failed exec. */
54 #define EXEC_FAILED 127
57 #define _PATH_RM "/bin/rm"
60 static int fflg, hflg, iflg, nflg, vflg;
61 static volatile sig_atomic_t info;
63 static int copy(const char *, const char *);
64 static int do_move(const char *, const char *);
65 static int fastcopy(const char *, const char *, struct stat *);
66 static void usage(void);
67 static void siginfo(int);
70 main(int argc, char *argv[])
79 while ((ch = getopt(argc, argv, "fhinv")) != -1)
105 signal(SIGINFO, siginfo);
111 * If the stat on the target fails or the target isn't a directory,
112 * try the move. More than 2 arguments is an error in this case.
114 if (stat(argv[argc - 1], &sb) || !S_ISDIR(sb.st_mode)) {
117 exit(do_move(argv[0], argv[1]));
121 * If -h was specified, treat the target as a symlink instead of
127 if (lstat(argv[1], &sb) == 0 && S_ISLNK(sb.st_mode))
128 exit(do_move(argv[0], argv[1]));
131 /* It's a directory, move each file into it. */
132 if (strlen(argv[argc - 1]) > sizeof(path) - 1)
133 errx(1, "%s: destination pathname too long", *argv);
134 strcpy(path, argv[argc - 1]);
135 baselen = strlen(path);
136 endp = &path[baselen];
137 if (!baselen || *(endp - 1) != '/') {
141 for (rval = 0; --argc; ++argv) {
143 * Find the last component of the source pathname. It
144 * may have trailing slashes.
146 p = *argv + strlen(*argv);
147 while (p != *argv && p[-1] == '/')
149 while (p != *argv && p[-1] != '/')
152 if ((baselen + (len = strlen(p))) >= PATH_MAX) {
153 warnx("%s: destination pathname too long", *argv);
156 memmove(endp, p, (size_t)len + 1);
157 if (do_move(*argv, path))
165 do_move(const char *from, const char *to)
172 * Check access. If interactive and file exists, ask user if it
173 * should be replaced. Otherwise if file exists but isn't writable
174 * make sure the user wants to clobber it.
176 if (!fflg && !access(to, F_OK)) {
178 /* prompt only if source exist */
179 if (lstat(from, &sb) == -1) {
184 #define YESNO "(y/n [n]) "
188 printf("%s not overwritten\n", to);
191 fprintf(stderr, "overwrite %s? %s", to, YESNO);
193 } else if (access(to, W_OK) && !stat(to, &sb) && isatty(STDIN_FILENO)) {
194 strmode(sb.st_mode, modep);
195 fprintf(stderr, "override %s%s%s/%s for %s? %s",
196 modep + 1, modep[9] == ' ' ? "" : " ",
197 user_from_uid((unsigned long)sb.st_uid, 0),
198 group_from_gid((unsigned long)sb.st_gid, 0), to, YESNO);
202 first = ch = getchar();
203 while (ch != '\n' && ch != EOF)
205 if (first != 'y' && first != 'Y') {
206 fprintf(stderr, "not overwritten\n");
212 * Rename on FreeBSD will fail with EISDIR and ENOTDIR, before failing
213 * with EXDEV. Therefore, copy() doesn't have to perform the checks
214 * specified in the Step 3 of the POSIX mv specification.
216 if (!rename(from, to)) {
218 printf("%s -> %s\n", from, to);
222 if (errno == EXDEV) {
225 int target_is_file = 0;
227 if (!lstat(to, &sb) && S_ISREG(sb.st_mode))
230 * If the source is a symbolic link and is on another
231 * filesystem, it can be recreated at the destination.
233 if (lstat(from, &sb) == -1) {
237 /* Can't mv(1) directory into a file ever. */
238 if (target_is_file && S_ISDIR(sb.st_mode)) {
239 warn("cannot overwrite %s with directory", to);
242 if (!S_ISLNK(sb.st_mode)) {
243 /* Can't mv(1) a mount point. */
244 if (realpath(from, path) == NULL) {
245 warn("cannot resolve %s: %s", from, path);
248 if (!statfs(path, &sfs) &&
249 !strcmp(path, sfs.f_mntonname)) {
250 warnx("cannot rename a mount point");
255 warn("rename %s to %s", from, to);
260 * If rename fails because we're trying to cross devices, and
261 * it's a regular file, do the copy internally; otherwise, use
264 if (lstat(from, &sb)) {
268 return (S_ISREG(sb.st_mode) ?
269 fastcopy(from, to, &sb) : copy(from, to));
273 fastcopy(const char *from, const char *to, struct stat *sbp)
275 struct timeval tval[2];
276 static u_int blen = MAXPHYS;
277 static char *bp = NULL;
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);
291 open(to, O_CREAT | O_EXCL | O_TRUNC | O_WRONLY, 0)) < 0) {
292 if (errno == EEXIST && unlink(to) == 0)
294 warn("fastcopy: open() failed (to): %s", to);
298 while ((nread = read(from_fd, bp, (size_t)blen)) > 0)
299 if (write(to_fd, bp, (size_t)nread) != nread) {
300 warn("fastcopy: write() failed: %s", to);
304 warn("fastcopy: read() failed: %s", from);
306 warn("%s: remove", to);
312 oldmode = sbp->st_mode & ALLPERMS;
313 if (fchown(to_fd, sbp->st_uid, sbp->st_gid)) {
314 warn("%s: set owner/group (was: %lu/%lu)", to,
315 (u_long)sbp->st_uid, (u_long)sbp->st_gid);
316 if (oldmode & (S_ISUID | S_ISGID)) {
318 "%s: owner/group changed; clearing suid/sgid (mode was 0%03o)",
320 sbp->st_mode &= ~(S_ISUID | S_ISGID);
323 if (fchmod(to_fd, sbp->st_mode))
324 warn("%s: set mode (was: 0%03o)", to, oldmode);
329 * NFS doesn't support chflags; ignore errors unless there's reason
330 * to believe we're losing bits. (Note, this still won't be right
331 * if the server supports flags and we were trying to *remove* flags
332 * on a file that we copied, i.e., that we didn't create.)
335 if (fchflags(to_fd, (u_long)sbp->st_flags))
336 if (errno != EOPNOTSUPP || sbp->st_flags != 0)
337 warn("%s: set flags (was: 0%07o)", to, sbp->st_flags);
339 tval[0].tv_sec = sbp->st_atime;
340 tval[1].tv_sec = sbp->st_mtime;
341 tval[0].tv_usec = tval[1].tv_usec = 0;
342 if (utimes(to, tval))
343 warn("%s: set times", to);
351 warn("%s: remove", from);
355 printf("%s -> %s\n", from, to);
360 copy(const char *from, const char *to)
366 if (lstat(to, &sb) == 0) {
367 /* Destination path exists. */
368 if (S_ISDIR(sb.st_mode)) {
369 if (rmdir(to) != 0) {
370 warn("rmdir %s", to);
374 if (unlink(to) != 0) {
375 warn("unlink %s", to);
379 } else if (errno != ENOENT) {
384 /* Copy source to destination. */
385 if (!(pid = vfork())) {
386 execl(_PATH_CP, "mv", vflg ? "-PRpv" : "-PRp", "--", from, to,
390 if (waitpid(pid, &status, 0) == -1) {
391 warn("%s %s %s: waitpid", _PATH_CP, from, to);
394 if (!WIFEXITED(status)) {
395 warnx("%s %s %s: did not terminate normally",
399 switch (WEXITSTATUS(status)) {
403 warnx("%s %s %s: exec failed", _PATH_CP, from, to);
406 warnx("%s %s %s: terminated with %d (non-zero) status",
407 _PATH_CP, from, to, WEXITSTATUS(status));
411 /* Delete the source. */
412 if (!(pid = vfork())) {
413 execl(_PATH_RM, "mv", "-rf", "--", from, NULL);
416 if (waitpid(pid, &status, 0) == -1) {
417 warn("%s %s: waitpid", _PATH_RM, from);
420 if (!WIFEXITED(status)) {
421 warnx("%s %s: did not terminate normally", _PATH_RM, from);
424 switch (WEXITSTATUS(status)) {
428 warnx("%s %s: exec failed", _PATH_RM, from);
431 warnx("%s %s: terminated with %d (non-zero) status",
432 _PATH_RM, from, WEXITSTATUS(status));
442 fprintf(stderr, "%s\n%s\n",
443 "usage: mv [-f | -i | -n] [-hv] source target",
444 " mv [-f | -i | -n] [-v] source ... directory");
449 siginfo(int notused __unused)