Commit | Line | Data |
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15637ed4 RG |
1 | /* |
2 | * Copyright (c) 1988 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * This code is derived from software contributed to Berkeley by | |
6 | * David Hitz of Auspex Systems Inc. | |
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 | * 3. All advertising materials mentioning features or use of this software | |
17 | * must display the following acknowledgement: | |
18 | * This product includes software developed by the University of | |
19 | * California, Berkeley and its contributors. | |
20 | * 4. Neither the name of the University nor the names of its contributors | |
21 | * may be used to endorse or promote products derived from this software | |
22 | * without specific prior written permission. | |
23 | * | |
24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
34 | * SUCH DAMAGE. | |
35 | */ | |
36 | ||
37 | #ifndef lint | |
38 | char copyright[] = | |
39 | "@(#) Copyright (c) 1988 The Regents of the University of California.\n\ | |
40 | All rights reserved.\n"; | |
41 | #endif /* not lint */ | |
42 | ||
43 | #ifndef lint | |
fc9e4a1c | 44 | static char sccsid[] = "@(#)cp.c 5.26 (Berkeley) 10/27/91"; |
15637ed4 RG |
45 | #endif /* not lint */ |
46 | ||
47 | /* | |
48 | * cp copies source files to target files. | |
49 | * | |
50 | * The global PATH_T structures "to" and "from" always contain paths to the | |
51 | * current source and target files, respectively. Since cp does not change | |
52 | * directories, these paths can be either absolute or dot-realative. | |
53 | * | |
54 | * The basic algorithm is to initialize "to" and "from", and then call the | |
55 | * recursive copy() function to do the actual work. If "from" is a file, | |
56 | * copy copies the data. If "from" is a directory, copy creates the | |
57 | * corresponding "to" directory, and calls itself recursively on all of | |
58 | * the entries in the "from" directory. | |
59 | */ | |
60 | ||
61 | #include <sys/param.h> | |
62 | #include <sys/stat.h> | |
fc9e4a1c | 63 | #include <sys/mman.h> |
15637ed4 RG |
64 | #include <sys/time.h> |
65 | #include <dirent.h> | |
66 | #include <fcntl.h> | |
67 | #include <errno.h> | |
68 | #include <unistd.h> | |
69 | #include <stdio.h> | |
70 | #include <stdlib.h> | |
71 | #include <string.h> | |
fc9e4a1c AM |
72 | #include "extern.h" |
73 | ||
74 | static void copy __P((void)); | |
75 | static void copy_dir __P((void)); | |
76 | static void copy_fifo __P((struct stat *, int)); | |
77 | static void copy_file __P((struct stat *, int)); | |
78 | static void copy_link __P((int)); | |
79 | static void copy_special __P((struct stat *, int)); | |
80 | static void setfile __P((struct stat *, int)); | |
81 | static void usage __P((void)); | |
15637ed4 RG |
82 | |
83 | PATH_T from = { from.p_path, "" }; | |
84 | PATH_T to = { to.p_path, "" }; | |
85 | ||
86 | uid_t myuid; | |
87 | int exit_val, myumask; | |
88 | int iflag, pflag, orflag, rflag; | |
89 | int (*statfcn)(); | |
fc9e4a1c | 90 | char *progname; |
15637ed4 RG |
91 | |
92 | main(argc, argv) | |
93 | int argc; | |
94 | char **argv; | |
95 | { | |
96 | extern int optind; | |
97 | struct stat to_stat; | |
98 | register int c, r; | |
99 | int symfollow, lstat(), stat(); | |
100 | char *old_to, *p; | |
101 | ||
102 | /* | |
103 | * The utility cp(1) is used by mv(1) -- except for usage statements, | |
104 | * print the "called as" program name. | |
105 | */ | |
106 | progname = (p = rindex(*argv,'/')) ? ++p : *argv; | |
107 | ||
108 | symfollow = 0; | |
109 | while ((c = getopt(argc, argv, "Rfhipr")) != EOF) { | |
110 | switch ((char)c) { | |
111 | case 'f': | |
112 | iflag = 0; | |
113 | break; | |
114 | case 'h': | |
115 | symfollow = 1; | |
116 | break; | |
117 | case 'i': | |
118 | iflag = isatty(fileno(stdin)); | |
119 | break; | |
120 | case 'p': | |
121 | pflag = 1; | |
122 | break; | |
123 | case 'R': | |
124 | rflag = 1; | |
125 | break; | |
126 | case 'r': | |
127 | orflag = 1; | |
128 | break; | |
129 | case '?': | |
130 | default: | |
131 | usage(); | |
132 | break; | |
133 | } | |
134 | } | |
135 | argc -= optind; | |
136 | argv += optind; | |
137 | ||
138 | if (argc < 2) | |
139 | usage(); | |
140 | ||
141 | if (rflag && orflag) { | |
142 | (void)fprintf(stderr, | |
143 | "cp: the -R and -r options are mutually exclusive.\n"); | |
144 | exit(1); | |
145 | } | |
146 | ||
15637ed4 RG |
147 | myuid = getuid(); |
148 | ||
149 | /* copy the umask for explicit mode setting */ | |
150 | myumask = umask(0); | |
151 | (void)umask(myumask); | |
152 | ||
153 | /* consume last argument first. */ | |
154 | if (!path_set(&to, argv[--argc])) | |
155 | exit(1); | |
156 | ||
157 | statfcn = symfollow || !rflag ? stat : lstat; | |
158 | ||
159 | /* | |
160 | * Cp has two distinct cases: | |
161 | * | |
162 | * % cp [-rip] source target | |
163 | * % cp [-rip] source1 ... directory | |
164 | * | |
165 | * In both cases, source can be either a file or a directory. | |
166 | * | |
167 | * In (1), the target becomes a copy of the source. That is, if the | |
168 | * source is a file, the target will be a file, and likewise for | |
169 | * directories. | |
170 | * | |
171 | * In (2), the real target is not directory, but "directory/source". | |
172 | */ | |
173 | ||
174 | r = stat(to.p_path, &to_stat); | |
175 | if (r == -1 && errno != ENOENT) { | |
fc9e4a1c | 176 | err("%s: %s", to.p_path, strerror(errno)); |
15637ed4 RG |
177 | exit(1); |
178 | } | |
179 | if (r == -1 || !S_ISDIR(to_stat.st_mode)) { | |
180 | /* | |
181 | * Case (1). Target is not a directory. | |
182 | */ | |
183 | if (argc > 1) { | |
184 | usage(); | |
185 | exit(1); | |
186 | } | |
187 | if (!path_set(&from, *argv)) | |
188 | exit(1); | |
189 | copy(); | |
190 | } | |
191 | else { | |
192 | /* | |
193 | * Case (2). Target is a directory. | |
194 | */ | |
195 | for (;; ++argv) { | |
fc9e4a1c | 196 | if (!path_set(&from, *argv)) |
15637ed4 | 197 | continue; |
fc9e4a1c AM |
198 | if (!(old_to = |
199 | path_append(&to, path_basename(&from), -1))) | |
15637ed4 | 200 | continue; |
15637ed4 RG |
201 | copy(); |
202 | if (!--argc) | |
203 | break; | |
204 | path_restore(&to, old_to); | |
205 | } | |
206 | } | |
207 | exit(exit_val); | |
208 | } | |
209 | ||
210 | /* copy file or directory at "from" to "to". */ | |
fc9e4a1c | 211 | static void |
15637ed4 RG |
212 | copy() |
213 | { | |
214 | struct stat from_stat, to_stat; | |
215 | int dne, statval; | |
216 | ||
217 | statval = statfcn(from.p_path, &from_stat); | |
218 | if (statval == -1) { | |
fc9e4a1c | 219 | err("%s: %s", from.p_path, strerror(errno)); |
15637ed4 RG |
220 | return; |
221 | } | |
222 | ||
223 | /* not an error, but need to remember it happened */ | |
224 | if (stat(to.p_path, &to_stat) == -1) | |
225 | dne = 1; | |
226 | else { | |
227 | if (to_stat.st_dev == from_stat.st_dev && | |
228 | to_stat.st_ino == from_stat.st_ino) { | |
229 | (void)fprintf(stderr, | |
230 | "%s: %s and %s are identical (not copied).\n", | |
231 | progname, to.p_path, from.p_path); | |
232 | exit_val = 1; | |
233 | return; | |
234 | } | |
235 | dne = 0; | |
236 | } | |
237 | ||
238 | switch(from_stat.st_mode & S_IFMT) { | |
239 | case S_IFLNK: | |
240 | copy_link(!dne); | |
241 | return; | |
242 | case S_IFDIR: | |
243 | if (!rflag && !orflag) { | |
244 | (void)fprintf(stderr, | |
245 | "%s: %s is a directory (not copied).\n", | |
246 | progname, from.p_path); | |
247 | exit_val = 1; | |
248 | return; | |
249 | } | |
250 | if (dne) { | |
251 | /* | |
252 | * If the directory doesn't exist, create the new | |
253 | * one with the from file mode plus owner RWX bits, | |
254 | * modified by the umask. Trade-off between being | |
255 | * able to write the directory (if from directory is | |
256 | * 555) and not causing a permissions race. If the | |
257 | * umask blocks owner writes cp fails. | |
258 | */ | |
259 | if (mkdir(to.p_path, from_stat.st_mode|S_IRWXU) < 0) { | |
fc9e4a1c | 260 | err("%s: %s", to.p_path, strerror(errno)); |
15637ed4 RG |
261 | return; |
262 | } | |
263 | } | |
fc9e4a1c | 264 | else if (!S_ISDIR(to_stat.st_mode)) { |
15637ed4 RG |
265 | (void)fprintf(stderr, "%s: %s: not a directory.\n", |
266 | progname, to.p_path); | |
267 | return; | |
268 | } | |
269 | copy_dir(); | |
270 | /* | |
271 | * If not -p and directory didn't exist, set it to be the | |
272 | * same as the from directory, umodified by the umask; | |
273 | * arguably wrong, but it's been that way forever. | |
274 | */ | |
275 | if (pflag) | |
276 | setfile(&from_stat, 0); | |
277 | else if (dne) | |
278 | (void)chmod(to.p_path, from_stat.st_mode); | |
279 | return; | |
280 | case S_IFCHR: | |
281 | case S_IFBLK: | |
282 | if (rflag) { | |
283 | copy_special(&from_stat, !dne); | |
284 | return; | |
285 | } | |
286 | break; | |
287 | case S_IFIFO: | |
288 | if (rflag) { | |
289 | copy_fifo(&from_stat, !dne); | |
290 | return; | |
291 | } | |
292 | break; | |
293 | } | |
294 | copy_file(&from_stat, dne); | |
295 | } | |
296 | ||
fc9e4a1c | 297 | static void |
15637ed4 RG |
298 | copy_file(fs, dne) |
299 | struct stat *fs; | |
300 | int dne; | |
301 | { | |
fc9e4a1c | 302 | static char buf[MAXBSIZE]; |
15637ed4 RG |
303 | register int from_fd, to_fd, rcount, wcount; |
304 | struct stat to_stat; | |
fc9e4a1c | 305 | char *p; |
15637ed4 RG |
306 | |
307 | if ((from_fd = open(from.p_path, O_RDONLY, 0)) == -1) { | |
fc9e4a1c | 308 | err("%s: %s", from.p_path, strerror(errno)); |
15637ed4 RG |
309 | return; |
310 | } | |
311 | ||
312 | /* | |
313 | * If the file exists and we're interactive, verify with the user. | |
314 | * If the file DNE, set the mode to be the from file, minus setuid | |
315 | * bits, modified by the umask; arguably wrong, but it makes copying | |
316 | * executables work right and it's been that way forever. (The | |
317 | * other choice is 666 or'ed with the execute bits on the from file | |
318 | * modified by the umask.) | |
319 | */ | |
320 | if (!dne) { | |
321 | if (iflag) { | |
322 | int checkch, ch; | |
323 | ||
324 | (void)fprintf(stderr, "overwrite %s? ", to.p_path); | |
325 | checkch = ch = getchar(); | |
326 | while (ch != '\n' && ch != EOF) | |
327 | ch = getchar(); | |
f87f93ac | 328 | if (checkch != 'y' && checkch != 'Y') { |
15637ed4 RG |
329 | (void)close(from_fd); |
330 | return; | |
331 | } | |
332 | } | |
333 | to_fd = open(to.p_path, O_WRONLY|O_TRUNC, 0); | |
334 | } else | |
335 | to_fd = open(to.p_path, O_WRONLY|O_CREAT|O_TRUNC, | |
336 | fs->st_mode & ~(S_ISUID|S_ISGID)); | |
337 | ||
338 | if (to_fd == -1) { | |
fc9e4a1c | 339 | err("%s: %s", to.p_path, strerror(errno)); |
15637ed4 RG |
340 | (void)close(from_fd); |
341 | return; | |
342 | } | |
343 | ||
fc9e4a1c AM |
344 | /* |
345 | * Mmap and write if less than 8M (the limit is so we don't totally | |
346 | * trash memory on big files. This is really a minor hack, but it | |
347 | * wins some CPU back. | |
348 | */ | |
349 | if (fs->st_size <= 8 * 1048576) { | |
350 | if ((p = mmap(NULL, fs->st_size, PROT_READ, | |
351 | MAP_FILE, from_fd, (off_t)0)) == (char *)-1) | |
352 | err("%s: %s", from.p_path, strerror(errno)); | |
c804fd49 AM |
353 | /* Not implemented yet... |
354 | madvise((caddr_t) p, fs->st_size, MADV_SEQUENTIAL); | |
355 | */ | |
fc9e4a1c AM |
356 | if (write(to_fd, p, fs->st_size) != fs->st_size) |
357 | err("%s: %s", to.p_path, strerror(errno)); | |
c804fd49 AM |
358 | if (munmap((caddr_t) p, fs->st_size) < 0) |
359 | err("%s: %s", from.p_path, strerror(errno)); | |
fc9e4a1c AM |
360 | } else { |
361 | while ((rcount = read(from_fd, buf, MAXBSIZE)) > 0) { | |
362 | wcount = write(to_fd, buf, rcount); | |
363 | if (rcount != wcount || wcount == -1) { | |
364 | err("%s: %s", to.p_path, strerror(errno)); | |
365 | break; | |
366 | } | |
15637ed4 | 367 | } |
fc9e4a1c AM |
368 | if (rcount < 0) |
369 | err("%s: %s", from.p_path, strerror(errno)); | |
15637ed4 | 370 | } |
15637ed4 RG |
371 | if (pflag) |
372 | setfile(fs, to_fd); | |
373 | /* | |
374 | * If the source was setuid or setgid, lose the bits unless the | |
375 | * copy is owned by the same user and group. | |
376 | */ | |
377 | else if (fs->st_mode & (S_ISUID|S_ISGID) && fs->st_uid == myuid) | |
378 | if (fstat(to_fd, &to_stat)) | |
fc9e4a1c | 379 | err("%s: %s", to.p_path, strerror(errno)); |
15637ed4 RG |
380 | #define RETAINBITS (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO) |
381 | else if (fs->st_gid == to_stat.st_gid && fchmod(to_fd, | |
382 | fs->st_mode & RETAINBITS & ~myumask)) | |
fc9e4a1c | 383 | err("%s: %s", to.p_path, strerror(errno)); |
15637ed4 RG |
384 | (void)close(from_fd); |
385 | if (close(to_fd)) | |
fc9e4a1c | 386 | err("%s: %s", to.p_path, strerror(errno)); |
15637ed4 RG |
387 | } |
388 | ||
fc9e4a1c | 389 | static void |
15637ed4 RG |
390 | copy_dir() |
391 | { | |
392 | struct stat from_stat; | |
393 | struct dirent *dp, **dir_list; | |
394 | register int dir_cnt, i; | |
395 | char *old_from, *old_to; | |
396 | ||
397 | dir_cnt = scandir(from.p_path, &dir_list, NULL, NULL); | |
398 | if (dir_cnt == -1) { | |
399 | (void)fprintf(stderr, "%s: can't read directory %s.\n", | |
400 | progname, from.p_path); | |
401 | exit_val = 1; | |
402 | } | |
403 | ||
404 | /* | |
405 | * Instead of handling directory entries in the order they appear | |
406 | * on disk, do non-directory files before directory files. | |
407 | * There are two reasons to do directories last. The first is | |
408 | * efficiency. Files tend to be in the same cylinder group as | |
409 | * their parent, whereas directories tend not to be. Copying files | |
410 | * all at once reduces seeking. Second, deeply nested tree's | |
411 | * could use up all the file descriptors if we didn't close one | |
412 | * directory before recursivly starting on the next. | |
413 | */ | |
414 | /* copy files */ | |
415 | for (i = 0; i < dir_cnt; ++i) { | |
416 | dp = dir_list[i]; | |
417 | if (dp->d_namlen <= 2 && dp->d_name[0] == '.' | |
418 | && (dp->d_name[1] == NULL || dp->d_name[1] == '.')) | |
419 | goto done; | |
fc9e4a1c AM |
420 | if (!(old_from = |
421 | path_append(&from, dp->d_name, (int)dp->d_namlen))) | |
15637ed4 | 422 | goto done; |
15637ed4 RG |
423 | |
424 | if (statfcn(from.p_path, &from_stat) < 0) { | |
fc9e4a1c | 425 | err("%s: %s", dp->d_name, strerror(errno)); |
15637ed4 RG |
426 | path_restore(&from, old_from); |
427 | goto done; | |
428 | } | |
429 | if (S_ISDIR(from_stat.st_mode)) { | |
430 | path_restore(&from, old_from); | |
431 | continue; | |
432 | } | |
fc9e4a1c | 433 | if (old_to = path_append(&to, dp->d_name, (int)dp->d_namlen)) { |
15637ed4 RG |
434 | copy(); |
435 | path_restore(&to, old_to); | |
fc9e4a1c | 436 | } |
15637ed4 RG |
437 | path_restore(&from, old_from); |
438 | done: dir_list[i] = NULL; | |
fc9e4a1c | 439 | free(dp); |
15637ed4 RG |
440 | } |
441 | ||
442 | /* copy directories */ | |
443 | for (i = 0; i < dir_cnt; ++i) { | |
444 | dp = dir_list[i]; | |
445 | if (!dp) | |
446 | continue; | |
fc9e4a1c AM |
447 | if (!(old_from = |
448 | path_append(&from, dp->d_name, (int)dp->d_namlen))) { | |
449 | free(dp); | |
15637ed4 RG |
450 | continue; |
451 | } | |
fc9e4a1c AM |
452 | if (!(old_to = |
453 | path_append(&to, dp->d_name, (int)dp->d_namlen))) { | |
454 | free(dp); | |
15637ed4 RG |
455 | path_restore(&from, old_from); |
456 | continue; | |
457 | } | |
458 | copy(); | |
fc9e4a1c | 459 | free(dp); |
15637ed4 RG |
460 | path_restore(&from, old_from); |
461 | path_restore(&to, old_to); | |
462 | } | |
fc9e4a1c | 463 | free(dir_list); |
15637ed4 RG |
464 | } |
465 | ||
fc9e4a1c | 466 | static void |
15637ed4 RG |
467 | copy_link(exists) |
468 | int exists; | |
469 | { | |
470 | int len; | |
471 | char link[MAXPATHLEN]; | |
472 | ||
473 | if ((len = readlink(from.p_path, link, sizeof(link))) == -1) { | |
fc9e4a1c | 474 | err("readlink: %s: %s", from.p_path, strerror(errno)); |
15637ed4 RG |
475 | return; |
476 | } | |
477 | link[len] = '\0'; | |
478 | if (exists && unlink(to.p_path)) { | |
fc9e4a1c | 479 | err("unlink: %s: %s", to.p_path, strerror(errno)); |
15637ed4 RG |
480 | return; |
481 | } | |
482 | if (symlink(link, to.p_path)) { | |
fc9e4a1c | 483 | err("symlink: %s: %s", link, strerror(errno)); |
15637ed4 RG |
484 | return; |
485 | } | |
486 | } | |
487 | ||
fc9e4a1c | 488 | static void |
15637ed4 RG |
489 | copy_fifo(from_stat, exists) |
490 | struct stat *from_stat; | |
491 | int exists; | |
492 | { | |
493 | if (exists && unlink(to.p_path)) { | |
fc9e4a1c | 494 | err("unlink: %s: %s", to.p_path, strerror(errno)); |
15637ed4 RG |
495 | return; |
496 | } | |
497 | if (mkfifo(to.p_path, from_stat->st_mode)) { | |
fc9e4a1c | 498 | err("mkfifo: %s: %s", to.p_path, strerror(errno)); |
15637ed4 RG |
499 | return; |
500 | } | |
501 | if (pflag) | |
502 | setfile(from_stat, 0); | |
503 | } | |
504 | ||
fc9e4a1c | 505 | static void |
15637ed4 RG |
506 | copy_special(from_stat, exists) |
507 | struct stat *from_stat; | |
508 | int exists; | |
509 | { | |
510 | if (exists && unlink(to.p_path)) { | |
fc9e4a1c | 511 | err("unlink: %s: %s", to.p_path, strerror(errno)); |
15637ed4 RG |
512 | return; |
513 | } | |
514 | if (mknod(to.p_path, from_stat->st_mode, from_stat->st_rdev)) { | |
fc9e4a1c | 515 | err("mknod: %s: %s", to.p_path, strerror(errno)); |
15637ed4 RG |
516 | return; |
517 | } | |
518 | if (pflag) | |
519 | setfile(from_stat, 0); | |
520 | } | |
521 | ||
fc9e4a1c | 522 | static void |
15637ed4 RG |
523 | setfile(fs, fd) |
524 | register struct stat *fs; | |
525 | int fd; | |
526 | { | |
527 | static struct timeval tv[2]; | |
15637ed4 RG |
528 | |
529 | fs->st_mode &= S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO; | |
530 | ||
531 | tv[0].tv_sec = fs->st_atime; | |
532 | tv[1].tv_sec = fs->st_mtime; | |
fc9e4a1c AM |
533 | if (utimes(to.p_path, tv)) |
534 | err("utimes: %s: %s", to.p_path, strerror(errno)); | |
15637ed4 RG |
535 | /* |
536 | * Changing the ownership probably won't succeed, unless we're root | |
537 | * or POSIX_CHOWN_RESTRICTED is not set. Set uid/gid before setting | |
538 | * the mode; current BSD behavior is to remove all setuid bits on | |
539 | * chown. If chown fails, lose setuid/setgid bits. | |
540 | */ | |
541 | if (fd ? fchown(fd, fs->st_uid, fs->st_gid) : | |
542 | chown(to.p_path, fs->st_uid, fs->st_gid)) { | |
fc9e4a1c AM |
543 | if (errno != EPERM) |
544 | err("chown: %s: %s", to.p_path, strerror(errno)); | |
15637ed4 RG |
545 | fs->st_mode &= ~(S_ISUID|S_ISGID); |
546 | } | |
fc9e4a1c AM |
547 | if (fd ? fchmod(fd, fs->st_mode) : chmod(to.p_path, fs->st_mode)) |
548 | err("chown: %s: %s", to.p_path, strerror(errno)); | |
15637ed4 RG |
549 | } |
550 | ||
fc9e4a1c | 551 | static void |
15637ed4 RG |
552 | usage() |
553 | { | |
554 | (void)fprintf(stderr, | |
fc9e4a1c | 555 | "usage: cp [-Rfhip] src target;\n cp [-Rfhip] src1 ... srcN directory\n"); |
15637ed4 RG |
556 | exit(1); |
557 | } | |
fc9e4a1c AM |
558 | |
559 | #if __STDC__ | |
560 | #include <stdarg.h> | |
561 | #else | |
562 | #include <varargs.h> | |
563 | #endif | |
564 | ||
565 | void | |
566 | #if __STDC__ | |
567 | err(const char *fmt, ...) | |
568 | #else | |
569 | err(fmt, va_alist) | |
570 | char *fmt; | |
571 | va_dcl | |
572 | #endif | |
573 | { | |
574 | va_list ap; | |
575 | #if __STDC__ | |
576 | va_start(ap, fmt); | |
577 | #else | |
578 | va_start(ap); | |
579 | #endif | |
580 | (void)fprintf(stderr, "%s: ", progname); | |
581 | (void)vfprintf(stderr, fmt, ap); | |
582 | va_end(ap); | |
583 | (void)fprintf(stderr, "\n"); | |
584 | exit_val = 1; | |
585 | } |