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);
68 static void siginfo(int);
72 main(int argc, char *argv[])
81 while ((ch = getopt(argc, argv, "fhinv")) != -1)
108 signal(SIGINFO, siginfo);
115 * If the stat on the target fails or the target isn't a directory,
116 * try the move. More than 2 arguments is an error in this case.
118 if (stat(argv[argc - 1], &sb) || !S_ISDIR(sb.st_mode)) {
121 exit(do_move(argv[0], argv[1]));
125 * If -h was specified, treat the target as a symlink instead of
131 if (lstat(argv[1], &sb) == 0 && S_ISLNK(sb.st_mode))
132 exit(do_move(argv[0], argv[1]));
135 /* It's a directory, move each file into it. */
136 if (strlen(argv[argc - 1]) > sizeof(path) - 1)
137 errx(1, "%s: destination pathname too long", *argv);
138 strcpy(path, argv[argc - 1]);
139 baselen = strlen(path);
140 endp = &path[baselen];
141 if (!baselen || *(endp - 1) != '/') {
145 for (rval = 0; --argc; ++argv) {
147 * Find the last component of the source pathname. It
148 * may have trailing slashes.
150 p = *argv + strlen(*argv);
151 while (p != *argv && p[-1] == '/')
153 while (p != *argv && p[-1] != '/')
156 if ((baselen + (len = strlen(p))) >= PATH_MAX) {
157 warnx("%s: destination pathname too long", *argv);
160 memmove(endp, p, (size_t)len + 1);
161 if (do_move(*argv, path))
169 do_move(const char *from, const char *to)
176 * Check access. If interactive and file exists, ask user if it
177 * should be replaced. Otherwise if file exists but isn't writable
178 * make sure the user wants to clobber it.
180 if (!fflg && !access(to, F_OK)) {
182 /* prompt only if source exist */
183 if (lstat(from, &sb) == -1) {
188 #define YESNO "(y/n [n]) "
192 printf("%s not overwritten\n", to);
195 fprintf(stderr, "overwrite %s? %s", to, YESNO);
197 } else if (access(to, W_OK) && !stat(to, &sb) && isatty(STDIN_FILENO)) {
198 strmode(sb.st_mode, modep);
199 fprintf(stderr, "override %s%s%s/%s for %s? %s",
200 modep + 1, modep[9] == ' ' ? "" : " ",
201 user_from_uid((unsigned long)sb.st_uid, 0),
202 group_from_gid((unsigned long)sb.st_gid, 0), to, YESNO);
206 first = ch = getchar();
207 while (ch != '\n' && ch != EOF)
209 if (first != 'y' && first != 'Y') {
210 fprintf(stderr, "not overwritten\n");
216 * Rename on FreeBSD will fail with EISDIR and ENOTDIR, before failing
217 * with EXDEV. Therefore, copy() doesn't have to perform the checks
218 * specified in the Step 3 of the POSIX mv specification.
220 if (!rename(from, to)) {
222 printf("%s -> %s\n", from, to);
226 if (errno == EXDEV) {
228 int target_is_file = 0;
230 if (!lstat(to, &sb) && S_ISREG(sb.st_mode))
233 * If the source is a symbolic link and is on another
234 * filesystem, it can be recreated at the destination.
236 if (lstat(from, &sb) == -1) {
240 /* Can't mv(1) directory into a file ever. */
241 if (target_is_file && S_ISDIR(sb.st_mode)) {
242 warn("cannot overwrite %s with directory", to);
245 if (!S_ISLNK(sb.st_mode)) {
246 /* Can't mv(1) a mount point. */
247 if (realpath(from, path) == NULL) {
248 warn("cannot resolve %s: %s", from, path);
253 if (!statfs(path, &sfs) &&
254 !strcmp(path, sfs.f_mntonname)) {
255 warnx("cannot rename a mount point");
261 warn("rename %s to %s", from, to);
266 * If rename fails because we're trying to cross devices, and
267 * it's a regular file, do the copy internally; otherwise, use
270 if (lstat(from, &sb)) {
274 return (S_ISREG(sb.st_mode) ?
275 fastcopy(from, to, &sb) : copy(from, to));
279 fastcopy(const char *from, const char *to, struct stat *sbp)
281 struct timeval tval[2];
282 static u_int blen = MAXPHYS;
283 static char *bp = NULL;
288 if ((from_fd = open(from, O_RDONLY, 0)) < 0) {
289 warn("fastcopy: open() failed (from): %s", from);
292 if (bp == NULL && (bp = malloc((size_t)blen)) == NULL) {
293 warnx("malloc(%u) failed", blen);
297 open(to, O_CREAT | O_EXCL | O_TRUNC | O_WRONLY, 0)) < 0) {
298 if (errno == EEXIST && unlink(to) == 0)
300 warn("fastcopy: open() failed (to): %s", to);
304 while ((nread = read(from_fd, bp, (size_t)blen)) > 0)
305 if (write(to_fd, bp, (size_t)nread) != nread) {
306 warn("fastcopy: write() failed: %s", to);
310 warn("fastcopy: read() failed: %s", from);
312 warn("%s: remove", to);
318 oldmode = sbp->st_mode & ALLPERMS;
319 if (fchown(to_fd, sbp->st_uid, sbp->st_gid)) {
320 warn("%s: set owner/group (was: %lu/%lu)", to,
321 (u_long)sbp->st_uid, (u_long)sbp->st_gid);
322 if (oldmode & (S_ISUID | S_ISGID)) {
324 "%s: owner/group changed; clearing suid/sgid (mode was 0%03o)",
326 sbp->st_mode &= ~(S_ISUID | S_ISGID);
329 if (fchmod(to_fd, sbp->st_mode))
330 warn("%s: set mode (was: 0%03o)", to, oldmode);
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 #ifdef _ST_FLAGS_PRESENT_
342 if (fchflags(to_fd, sbp->st_flags))
343 if (errno != EOPNOTSUPP || sbp->st_flags != 0)
344 warn("%s: set flags (was: 0%07o)", to, sbp->st_flags);
347 tval[0].tv_sec = sbp->st_atime;
348 tval[1].tv_sec = sbp->st_mtime;
349 tval[0].tv_usec = tval[1].tv_usec = 0;
350 if (utimes(to, tval))
351 warn("%s: set times", to);
359 warn("%s: remove", from);
363 printf("%s -> %s\n", from, to);
368 copy(const char *from, const char *to)
374 if (lstat(to, &sb) == 0) {
375 /* Destination path exists. */
376 if (S_ISDIR(sb.st_mode)) {
377 if (rmdir(to) != 0) {
378 warn("rmdir %s", to);
382 if (unlink(to) != 0) {
383 warn("unlink %s", to);
387 } else if (errno != ENOENT) {
392 /* Copy source to destination. */
393 if (!(pid = vfork())) {
394 execl(_PATH_CP, "mv", vflg ? "-PRpv" : "-PRp", "--", from, to,
398 if (waitpid(pid, &status, 0) == -1) {
399 warn("%s %s %s: waitpid", _PATH_CP, from, to);
402 if (!WIFEXITED(status)) {
403 warnx("%s %s %s: did not terminate normally",
407 switch (WEXITSTATUS(status)) {
411 warnx("%s %s %s: exec failed", _PATH_CP, from, to);
414 warnx("%s %s %s: terminated with %d (non-zero) status",
415 _PATH_CP, from, to, WEXITSTATUS(status));
419 /* Delete the source. */
420 if (!(pid = vfork())) {
421 execl(_PATH_RM, "mv", "-rf", "--", from, NULL);
424 if (waitpid(pid, &status, 0) == -1) {
425 warn("%s %s: waitpid", _PATH_RM, from);
428 if (!WIFEXITED(status)) {
429 warnx("%s %s: did not terminate normally", _PATH_RM, from);
432 switch (WEXITSTATUS(status)) {
436 warnx("%s %s: exec failed", _PATH_RM, from);
439 warnx("%s %s: terminated with %d (non-zero) status",
440 _PATH_RM, from, WEXITSTATUS(status));
450 fprintf(stderr, "%s\n%s\n",
451 "usage: mv [-f | -i | -n] [-hv] source target",
452 " mv [-f | -i | -n] [-v] source ... directory");
458 siginfo(int notused __unused)