1/*-
2 * Copyright (c) 1989, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Ken Smith of The State University of New York at Buffalo.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
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.
19 *
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
30 * SUCH DAMAGE.
31 */
32
33#if 0
34#ifndef lint
35static char const copyright[] =
36"@(#) Copyright (c) 1989, 1993, 1994\n\
37 The Regents of the University of California. All rights reserved.\n";
38#endif /* not lint */
39
40#ifndef lint
41static char sccsid[] = "@(#)mv.c 8.2 (Berkeley) 4/2/94";
42#endif /* not lint */
43#endif
44#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 1989, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Ken Smith of The State University of New York at Buffalo.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
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.
19 *
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
30 * SUCH DAMAGE.
31 */
32
33#if 0
34#ifndef lint
35static char const copyright[] =
36"@(#) Copyright (c) 1989, 1993, 1994\n\
37 The Regents of the University of California. All rights reserved.\n";
38#endif /* not lint */
39
40#ifndef lint
41static char sccsid[] = "@(#)mv.c 8.2 (Berkeley) 4/2/94";
42#endif /* not lint */
43#endif
44#include <sys/cdefs.h>
|
46
47#include <sys/types.h>
48#include <sys/acl.h>
49#include <sys/param.h>
50#include <sys/time.h>
51#include <sys/wait.h>
52#include <sys/stat.h>
53#include <sys/mount.h>
54
55#include <err.h>
56#include <errno.h>
57#include <fcntl.h>
58#include <grp.h>
59#include <limits.h>
60#include <paths.h>
61#include <pwd.h>
62#include <stdio.h>
63#include <stdlib.h>
64#include <string.h>
65#include <sysexits.h>
66#include <unistd.h>
67
68int fflg, iflg, nflg, vflg;
69
70int copy(char *, char *);
71int do_move(char *, char *);
72int fastcopy(char *, char *, struct stat *);
73void usage(void);
74
75int
76main(int argc, char *argv[])
77{
78 size_t baselen, len;
79 int rval;
80 char *p, *endp;
81 struct stat sb;
82 int ch;
83 char path[PATH_MAX];
84
85 while ((ch = getopt(argc, argv, "finv")) != -1)
86 switch (ch) {
87 case 'i':
88 iflg = 1;
89 fflg = nflg = 0;
90 break;
91 case 'f':
92 fflg = 1;
93 iflg = nflg = 0;
94 break;
95 case 'n':
96 nflg = 1;
97 fflg = iflg = 0;
98 break;
99 case 'v':
100 vflg = 1;
101 break;
102 default:
103 usage();
104 }
105 argc -= optind;
106 argv += optind;
107
108 if (argc < 2)
109 usage();
110
111 /*
112 * If the stat on the target fails or the target isn't a directory,
113 * try the move. More than 2 arguments is an error in this case.
114 */
115 if (stat(argv[argc - 1], &sb) || !S_ISDIR(sb.st_mode)) {
116 if (argc > 2)
117 usage();
118 exit(do_move(argv[0], argv[1]));
119 }
120
121 /* It's a directory, move each file into it. */
122 if (strlen(argv[argc - 1]) > sizeof(path) - 1)
123 errx(1, "%s: destination pathname too long", *argv);
124 (void)strcpy(path, argv[argc - 1]);
125 baselen = strlen(path);
126 endp = &path[baselen];
127 if (!baselen || *(endp - 1) != '/') {
128 *endp++ = '/';
129 ++baselen;
130 }
131 for (rval = 0; --argc; ++argv) {
132 /*
133 * Find the last component of the source pathname. It
134 * may have trailing slashes.
135 */
136 p = *argv + strlen(*argv);
137 while (p != *argv && p[-1] == '/')
138 --p;
139 while (p != *argv && p[-1] != '/')
140 --p;
141
142 if ((baselen + (len = strlen(p))) >= PATH_MAX) {
143 warnx("%s: destination pathname too long", *argv);
144 rval = 1;
145 } else {
146 memmove(endp, p, (size_t)len + 1);
147 if (do_move(*argv, path))
148 rval = 1;
149 }
150 }
151 exit(rval);
152}
153
154int
155do_move(char *from, char *to)
156{
157 struct stat sb;
158 int ask, ch, first;
159 char modep[15];
160
161 /*
162 * Check access. If interactive and file exists, ask user if it
163 * should be replaced. Otherwise if file exists but isn't writable
164 * make sure the user wants to clobber it.
165 */
166 if (!fflg && !access(to, F_OK)) {
167
168 /* prompt only if source exist */
169 if (lstat(from, &sb) == -1) {
170 warn("%s", from);
171 return (1);
172 }
173
174#define YESNO "(y/n [n]) "
175 ask = 0;
176 if (nflg) {
177 if (vflg)
178 printf("%s not overwritten\n", to);
179 return (0);
180 } else if (iflg) {
181 (void)fprintf(stderr, "overwrite %s? %s", to, YESNO);
182 ask = 1;
183 } else if (access(to, W_OK) && !stat(to, &sb)) {
184 strmode(sb.st_mode, modep);
185 (void)fprintf(stderr, "override %s%s%s/%s for %s? %s",
186 modep + 1, modep[9] == ' ' ? "" : " ",
187 user_from_uid((unsigned long)sb.st_uid, 0),
188 group_from_gid((unsigned long)sb.st_gid, 0), to, YESNO);
189 ask = 1;
190 }
191 if (ask) {
192 first = ch = getchar();
193 while (ch != '\n' && ch != EOF)
194 ch = getchar();
195 if (first != 'y' && first != 'Y') {
196 (void)fprintf(stderr, "not overwritten\n");
197 return (0);
198 }
199 }
200 }
201 if (!rename(from, to)) {
202 if (vflg)
203 printf("%s -> %s\n", from, to);
204 return (0);
205 }
206
207 if (errno == EXDEV) {
208 struct statfs sfs;
209 char path[PATH_MAX];
210
211 /*
212 * If the source is a symbolic link and is on another
213 * filesystem, it can be recreated at the destination.
214 */
215 if (lstat(from, &sb) == -1) {
216 warn("%s", from);
217 return (1);
218 }
219 if (!S_ISLNK(sb.st_mode)) {
220 /* Can't mv(1) a mount point. */
221 if (realpath(from, path) == NULL) {
222 warnx("cannot resolve %s: %s", from, path);
223 return (1);
224 }
225 if (!statfs(path, &sfs) &&
226 !strcmp(path, sfs.f_mntonname)) {
227 warnx("cannot rename a mount point");
228 return (1);
229 }
230 }
231 } else {
232 warn("rename %s to %s", from, to);
233 return (1);
234 }
235
236 /*
237 * If rename fails because we're trying to cross devices, and
238 * it's a regular file, do the copy internally; otherwise, use
239 * cp and rm.
240 */
241 if (lstat(from, &sb)) {
242 warn("%s", from);
243 return (1);
244 }
245 return (S_ISREG(sb.st_mode) ?
246 fastcopy(from, to, &sb) : copy(from, to));
247}
248
249int
250fastcopy(char *from, char *to, struct stat *sbp)
251{
252 struct timeval tval[2];
253 static u_int blen;
254 static char *bp;
255 mode_t oldmode;
256 int nread, from_fd, to_fd;
257 acl_t acl;
258
259 if ((from_fd = open(from, O_RDONLY, 0)) < 0) {
260 warn("%s", from);
261 return (1);
262 }
263 if (blen < sbp->st_blksize) {
264 if (bp != NULL)
265 free(bp);
266 if ((bp = malloc((size_t)sbp->st_blksize)) == NULL) {
267 blen = 0;
268 warnx("malloc failed");
269 return (1);
270 }
271 blen = sbp->st_blksize;
272 }
273 while ((to_fd =
274 open(to, O_CREAT | O_EXCL | O_TRUNC | O_WRONLY, 0)) < 0) {
275 if (errno == EEXIST && unlink(to) == 0)
276 continue;
277 warn("%s", to);
278 (void)close(from_fd);
279 return (1);
280 }
281 while ((nread = read(from_fd, bp, (size_t)blen)) > 0)
282 if (write(to_fd, bp, (size_t)nread) != nread) {
283 warn("%s", to);
284 goto err;
285 }
286 if (nread < 0) {
287 warn("%s", from);
288err: if (unlink(to))
289 warn("%s: remove", to);
290 (void)close(from_fd);
291 (void)close(to_fd);
292 return (1);
293 }
294
295 oldmode = sbp->st_mode & ALLPERMS;
296 if (fchown(to_fd, sbp->st_uid, sbp->st_gid)) {
297 warn("%s: set owner/group (was: %lu/%lu)", to,
298 (u_long)sbp->st_uid, (u_long)sbp->st_gid);
299 if (oldmode & (S_ISUID | S_ISGID)) {
300 warnx(
301"%s: owner/group changed; clearing suid/sgid (mode was 0%03o)",
302 to, oldmode);
303 sbp->st_mode &= ~(S_ISUID | S_ISGID);
304 }
305 }
306 /*
307 * POSIX 1003.2c states that if _POSIX_ACL_EXTENDED is in effect
308 * for dest_file, then it's ACLs shall reflect the ACLs of the
309 * source_file.
310 */
311 if (fpathconf(to_fd, _PC_ACL_EXTENDED) == 1 &&
312 fpathconf(from_fd, _PC_ACL_EXTENDED) == 1) {
313 acl = acl_get_fd(from_fd);
314 if (acl == NULL)
315 warn("failed to get acl entries while setting %s",
316 from);
317 else if (acl_set_fd(to_fd, acl) < 0)
318 warn("failed to set acl entries for %s", to);
319 }
320 (void)close(from_fd);
321 if (fchmod(to_fd, sbp->st_mode))
322 warn("%s: set mode (was: 0%03o)", to, oldmode);
323 /*
324 * XXX
325 * NFS doesn't support chflags; ignore errors unless there's reason
326 * to believe we're losing bits. (Note, this still won't be right
327 * if the server supports flags and we were trying to *remove* flags
328 * on a file that we copied, i.e., that we didn't create.)
329 */
330 errno = 0;
331 if (fchflags(to_fd, (u_long)sbp->st_flags))
332 if (errno != EOPNOTSUPP || sbp->st_flags != 0)
333 warn("%s: set flags (was: 0%07o)", to, sbp->st_flags);
334
335 tval[0].tv_sec = sbp->st_atime;
336 tval[1].tv_sec = sbp->st_mtime;
337 tval[0].tv_usec = tval[1].tv_usec = 0;
338 if (utimes(to, tval))
339 warn("%s: set times", to);
340
341 if (close(to_fd)) {
342 warn("%s", to);
343 return (1);
344 }
345
346 if (unlink(from)) {
347 warn("%s: remove", from);
348 return (1);
349 }
350 if (vflg)
351 printf("%s -> %s\n", from, to);
352 return (0);
353}
354
355int
356copy(char *from, char *to)
357{
| 46
47#include <sys/types.h>
48#include <sys/acl.h>
49#include <sys/param.h>
50#include <sys/time.h>
51#include <sys/wait.h>
52#include <sys/stat.h>
53#include <sys/mount.h>
54
55#include <err.h>
56#include <errno.h>
57#include <fcntl.h>
58#include <grp.h>
59#include <limits.h>
60#include <paths.h>
61#include <pwd.h>
62#include <stdio.h>
63#include <stdlib.h>
64#include <string.h>
65#include <sysexits.h>
66#include <unistd.h>
67
68int fflg, iflg, nflg, vflg;
69
70int copy(char *, char *);
71int do_move(char *, char *);
72int fastcopy(char *, char *, struct stat *);
73void usage(void);
74
75int
76main(int argc, char *argv[])
77{
78 size_t baselen, len;
79 int rval;
80 char *p, *endp;
81 struct stat sb;
82 int ch;
83 char path[PATH_MAX];
84
85 while ((ch = getopt(argc, argv, "finv")) != -1)
86 switch (ch) {
87 case 'i':
88 iflg = 1;
89 fflg = nflg = 0;
90 break;
91 case 'f':
92 fflg = 1;
93 iflg = nflg = 0;
94 break;
95 case 'n':
96 nflg = 1;
97 fflg = iflg = 0;
98 break;
99 case 'v':
100 vflg = 1;
101 break;
102 default:
103 usage();
104 }
105 argc -= optind;
106 argv += optind;
107
108 if (argc < 2)
109 usage();
110
111 /*
112 * If the stat on the target fails or the target isn't a directory,
113 * try the move. More than 2 arguments is an error in this case.
114 */
115 if (stat(argv[argc - 1], &sb) || !S_ISDIR(sb.st_mode)) {
116 if (argc > 2)
117 usage();
118 exit(do_move(argv[0], argv[1]));
119 }
120
121 /* It's a directory, move each file into it. */
122 if (strlen(argv[argc - 1]) > sizeof(path) - 1)
123 errx(1, "%s: destination pathname too long", *argv);
124 (void)strcpy(path, argv[argc - 1]);
125 baselen = strlen(path);
126 endp = &path[baselen];
127 if (!baselen || *(endp - 1) != '/') {
128 *endp++ = '/';
129 ++baselen;
130 }
131 for (rval = 0; --argc; ++argv) {
132 /*
133 * Find the last component of the source pathname. It
134 * may have trailing slashes.
135 */
136 p = *argv + strlen(*argv);
137 while (p != *argv && p[-1] == '/')
138 --p;
139 while (p != *argv && p[-1] != '/')
140 --p;
141
142 if ((baselen + (len = strlen(p))) >= PATH_MAX) {
143 warnx("%s: destination pathname too long", *argv);
144 rval = 1;
145 } else {
146 memmove(endp, p, (size_t)len + 1);
147 if (do_move(*argv, path))
148 rval = 1;
149 }
150 }
151 exit(rval);
152}
153
154int
155do_move(char *from, char *to)
156{
157 struct stat sb;
158 int ask, ch, first;
159 char modep[15];
160
161 /*
162 * Check access. If interactive and file exists, ask user if it
163 * should be replaced. Otherwise if file exists but isn't writable
164 * make sure the user wants to clobber it.
165 */
166 if (!fflg && !access(to, F_OK)) {
167
168 /* prompt only if source exist */
169 if (lstat(from, &sb) == -1) {
170 warn("%s", from);
171 return (1);
172 }
173
174#define YESNO "(y/n [n]) "
175 ask = 0;
176 if (nflg) {
177 if (vflg)
178 printf("%s not overwritten\n", to);
179 return (0);
180 } else if (iflg) {
181 (void)fprintf(stderr, "overwrite %s? %s", to, YESNO);
182 ask = 1;
183 } else if (access(to, W_OK) && !stat(to, &sb)) {
184 strmode(sb.st_mode, modep);
185 (void)fprintf(stderr, "override %s%s%s/%s for %s? %s",
186 modep + 1, modep[9] == ' ' ? "" : " ",
187 user_from_uid((unsigned long)sb.st_uid, 0),
188 group_from_gid((unsigned long)sb.st_gid, 0), to, YESNO);
189 ask = 1;
190 }
191 if (ask) {
192 first = ch = getchar();
193 while (ch != '\n' && ch != EOF)
194 ch = getchar();
195 if (first != 'y' && first != 'Y') {
196 (void)fprintf(stderr, "not overwritten\n");
197 return (0);
198 }
199 }
200 }
201 if (!rename(from, to)) {
202 if (vflg)
203 printf("%s -> %s\n", from, to);
204 return (0);
205 }
206
207 if (errno == EXDEV) {
208 struct statfs sfs;
209 char path[PATH_MAX];
210
211 /*
212 * If the source is a symbolic link and is on another
213 * filesystem, it can be recreated at the destination.
214 */
215 if (lstat(from, &sb) == -1) {
216 warn("%s", from);
217 return (1);
218 }
219 if (!S_ISLNK(sb.st_mode)) {
220 /* Can't mv(1) a mount point. */
221 if (realpath(from, path) == NULL) {
222 warnx("cannot resolve %s: %s", from, path);
223 return (1);
224 }
225 if (!statfs(path, &sfs) &&
226 !strcmp(path, sfs.f_mntonname)) {
227 warnx("cannot rename a mount point");
228 return (1);
229 }
230 }
231 } else {
232 warn("rename %s to %s", from, to);
233 return (1);
234 }
235
236 /*
237 * If rename fails because we're trying to cross devices, and
238 * it's a regular file, do the copy internally; otherwise, use
239 * cp and rm.
240 */
241 if (lstat(from, &sb)) {
242 warn("%s", from);
243 return (1);
244 }
245 return (S_ISREG(sb.st_mode) ?
246 fastcopy(from, to, &sb) : copy(from, to));
247}
248
249int
250fastcopy(char *from, char *to, struct stat *sbp)
251{
252 struct timeval tval[2];
253 static u_int blen;
254 static char *bp;
255 mode_t oldmode;
256 int nread, from_fd, to_fd;
257 acl_t acl;
258
259 if ((from_fd = open(from, O_RDONLY, 0)) < 0) {
260 warn("%s", from);
261 return (1);
262 }
263 if (blen < sbp->st_blksize) {
264 if (bp != NULL)
265 free(bp);
266 if ((bp = malloc((size_t)sbp->st_blksize)) == NULL) {
267 blen = 0;
268 warnx("malloc failed");
269 return (1);
270 }
271 blen = sbp->st_blksize;
272 }
273 while ((to_fd =
274 open(to, O_CREAT | O_EXCL | O_TRUNC | O_WRONLY, 0)) < 0) {
275 if (errno == EEXIST && unlink(to) == 0)
276 continue;
277 warn("%s", to);
278 (void)close(from_fd);
279 return (1);
280 }
281 while ((nread = read(from_fd, bp, (size_t)blen)) > 0)
282 if (write(to_fd, bp, (size_t)nread) != nread) {
283 warn("%s", to);
284 goto err;
285 }
286 if (nread < 0) {
287 warn("%s", from);
288err: if (unlink(to))
289 warn("%s: remove", to);
290 (void)close(from_fd);
291 (void)close(to_fd);
292 return (1);
293 }
294
295 oldmode = sbp->st_mode & ALLPERMS;
296 if (fchown(to_fd, sbp->st_uid, sbp->st_gid)) {
297 warn("%s: set owner/group (was: %lu/%lu)", to,
298 (u_long)sbp->st_uid, (u_long)sbp->st_gid);
299 if (oldmode & (S_ISUID | S_ISGID)) {
300 warnx(
301"%s: owner/group changed; clearing suid/sgid (mode was 0%03o)",
302 to, oldmode);
303 sbp->st_mode &= ~(S_ISUID | S_ISGID);
304 }
305 }
306 /*
307 * POSIX 1003.2c states that if _POSIX_ACL_EXTENDED is in effect
308 * for dest_file, then it's ACLs shall reflect the ACLs of the
309 * source_file.
310 */
311 if (fpathconf(to_fd, _PC_ACL_EXTENDED) == 1 &&
312 fpathconf(from_fd, _PC_ACL_EXTENDED) == 1) {
313 acl = acl_get_fd(from_fd);
314 if (acl == NULL)
315 warn("failed to get acl entries while setting %s",
316 from);
317 else if (acl_set_fd(to_fd, acl) < 0)
318 warn("failed to set acl entries for %s", to);
319 }
320 (void)close(from_fd);
321 if (fchmod(to_fd, sbp->st_mode))
322 warn("%s: set mode (was: 0%03o)", to, oldmode);
323 /*
324 * XXX
325 * NFS doesn't support chflags; ignore errors unless there's reason
326 * to believe we're losing bits. (Note, this still won't be right
327 * if the server supports flags and we were trying to *remove* flags
328 * on a file that we copied, i.e., that we didn't create.)
329 */
330 errno = 0;
331 if (fchflags(to_fd, (u_long)sbp->st_flags))
332 if (errno != EOPNOTSUPP || sbp->st_flags != 0)
333 warn("%s: set flags (was: 0%07o)", to, sbp->st_flags);
334
335 tval[0].tv_sec = sbp->st_atime;
336 tval[1].tv_sec = sbp->st_mtime;
337 tval[0].tv_usec = tval[1].tv_usec = 0;
338 if (utimes(to, tval))
339 warn("%s: set times", to);
340
341 if (close(to_fd)) {
342 warn("%s", to);
343 return (1);
344 }
345
346 if (unlink(from)) {
347 warn("%s: remove", from);
348 return (1);
349 }
350 if (vflg)
351 printf("%s -> %s\n", from, to);
352 return (0);
353}
354
355int
356copy(char *from, char *to)
357{
|