1/*-
2 * Copyright (c) 1988, 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 * 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 * 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) 1988, 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[] = "@(#)cp.c 8.2 (Berkeley) 4/1/94";
42#endif /* not lint */
43#endif
44#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 1988, 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 * 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 * 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) 1988, 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[] = "@(#)cp.c 8.2 (Berkeley) 4/1/94";
42#endif /* not lint */
43#endif
44#include <sys/cdefs.h>
|
46
47/*
48 * Cp copies source files to target files.
49 *
50 * The global PATH_T structure "to" always contains the path to the
51 * current target file. Since fts(3) does not change directories,
52 * this path can be either absolute or dot-relative.
53 *
54 * The basic algorithm is to initialize "to" and use fts(3) to traverse
55 * the file hierarchy rooted in the argument list. A trivial case is the
56 * case of 'cp file1 file2'. The more interesting case is the case of
57 * 'cp file1 file2 ... fileN dir' where the hierarchy is traversed and the
58 * path (relative to the root of the traversal) is appended to dir (stored
59 * in "to") to form the final target path.
60 */
61
62#include <sys/types.h>
63#include <sys/stat.h>
64
65#include <err.h>
66#include <errno.h>
67#include <fts.h>
68#include <limits.h>
69#include <signal.h>
70#include <stdio.h>
71#include <stdlib.h>
72#include <string.h>
73#include <unistd.h>
74
75#include "extern.h"
76
77#define STRIP_TRAILING_SLASH(p) { \
78 while ((p).p_end > (p).p_path + 1 && (p).p_end[-1] == '/') \
79 *--(p).p_end = 0; \
80}
81
82static char emptystring[] = "";
83
84PATH_T to = { to.p_path, emptystring, "" };
85
86int fflag, iflag, lflag, nflag, pflag, vflag;
87static int Rflag, rflag;
88volatile sig_atomic_t info;
89
90enum op { FILE_TO_FILE, FILE_TO_DIR, DIR_TO_DNE };
91
92static int copy(char *[], enum op, int);
93static int mastercmp(const FTSENT * const *, const FTSENT * const *);
94static void siginfo(int __unused);
95
96int
97main(int argc, char *argv[])
98{
99 struct stat to_stat, tmp_stat;
100 enum op type;
101 int Hflag, Lflag, Pflag, ch, fts_options, r, have_trailing_slash;
102 char *target;
103
104 Hflag = Lflag = Pflag = 0;
105 while ((ch = getopt(argc, argv, "HLPRfilnprv")) != -1)
106 switch (ch) {
107 case 'H':
108 Hflag = 1;
109 Lflag = Pflag = 0;
110 break;
111 case 'L':
112 Lflag = 1;
113 Hflag = Pflag = 0;
114 break;
115 case 'P':
116 Pflag = 1;
117 Hflag = Lflag = 0;
118 break;
119 case 'R':
120 Rflag = 1;
121 break;
122 case 'f':
123 fflag = 1;
124 iflag = nflag = 0;
125 break;
126 case 'i':
127 iflag = 1;
128 fflag = nflag = 0;
129 break;
130 case 'l':
131 lflag = 1;
132 break;
133 case 'n':
134 nflag = 1;
135 fflag = iflag = 0;
136 break;
137 case 'p':
138 pflag = 1;
139 break;
140 case 'r':
141 rflag = Lflag = 1;
142 Hflag = Pflag = 0;
143 break;
144 case 'v':
145 vflag = 1;
146 break;
147 default:
148 usage();
149 break;
150 }
151 argc -= optind;
152 argv += optind;
153
154 if (argc < 2)
155 usage();
156
157 fts_options = FTS_NOCHDIR | FTS_PHYSICAL;
158 if (Rflag && rflag)
159 errx(1, "the -R and -r options may not be specified together");
160 if (rflag)
161 Rflag = 1;
162 if (Rflag) {
163 if (Hflag)
164 fts_options |= FTS_COMFOLLOW;
165 if (Lflag) {
166 fts_options &= ~FTS_PHYSICAL;
167 fts_options |= FTS_LOGICAL;
168 }
169 } else {
170 fts_options &= ~FTS_PHYSICAL;
171 fts_options |= FTS_LOGICAL | FTS_COMFOLLOW;
172 }
173 (void)signal(SIGINFO, siginfo);
174
175 /* Save the target base in "to". */
176 target = argv[--argc];
177 if (strlcpy(to.p_path, target, sizeof(to.p_path)) >= sizeof(to.p_path))
178 errx(1, "%s: name too long", target);
179 to.p_end = to.p_path + strlen(to.p_path);
180 if (to.p_path == to.p_end) {
181 *to.p_end++ = '.';
182 *to.p_end = 0;
183 }
184 have_trailing_slash = (to.p_end[-1] == '/');
185 if (have_trailing_slash)
186 STRIP_TRAILING_SLASH(to);
187 to.target_end = to.p_end;
188
189 /* Set end of argument list for fts(3). */
190 argv[argc] = NULL;
191
192 /*
193 * Cp has two distinct cases:
194 *
195 * cp [-R] source target
196 * cp [-R] source1 ... sourceN directory
197 *
198 * In both cases, source can be either a file or a directory.
199 *
200 * In (1), the target becomes a copy of the source. That is, if the
201 * source is a file, the target will be a file, and likewise for
202 * directories.
203 *
204 * In (2), the real target is not directory, but "directory/source".
205 */
206 r = stat(to.p_path, &to_stat);
207 if (r == -1 && errno != ENOENT)
208 err(1, "%s", to.p_path);
209 if (r == -1 || !S_ISDIR(to_stat.st_mode)) {
210 /*
211 * Case (1). Target is not a directory.
212 */
213 if (argc > 1) {
| 46
47/*
48 * Cp copies source files to target files.
49 *
50 * The global PATH_T structure "to" always contains the path to the
51 * current target file. Since fts(3) does not change directories,
52 * this path can be either absolute or dot-relative.
53 *
54 * The basic algorithm is to initialize "to" and use fts(3) to traverse
55 * the file hierarchy rooted in the argument list. A trivial case is the
56 * case of 'cp file1 file2'. The more interesting case is the case of
57 * 'cp file1 file2 ... fileN dir' where the hierarchy is traversed and the
58 * path (relative to the root of the traversal) is appended to dir (stored
59 * in "to") to form the final target path.
60 */
61
62#include <sys/types.h>
63#include <sys/stat.h>
64
65#include <err.h>
66#include <errno.h>
67#include <fts.h>
68#include <limits.h>
69#include <signal.h>
70#include <stdio.h>
71#include <stdlib.h>
72#include <string.h>
73#include <unistd.h>
74
75#include "extern.h"
76
77#define STRIP_TRAILING_SLASH(p) { \
78 while ((p).p_end > (p).p_path + 1 && (p).p_end[-1] == '/') \
79 *--(p).p_end = 0; \
80}
81
82static char emptystring[] = "";
83
84PATH_T to = { to.p_path, emptystring, "" };
85
86int fflag, iflag, lflag, nflag, pflag, vflag;
87static int Rflag, rflag;
88volatile sig_atomic_t info;
89
90enum op { FILE_TO_FILE, FILE_TO_DIR, DIR_TO_DNE };
91
92static int copy(char *[], enum op, int);
93static int mastercmp(const FTSENT * const *, const FTSENT * const *);
94static void siginfo(int __unused);
95
96int
97main(int argc, char *argv[])
98{
99 struct stat to_stat, tmp_stat;
100 enum op type;
101 int Hflag, Lflag, Pflag, ch, fts_options, r, have_trailing_slash;
102 char *target;
103
104 Hflag = Lflag = Pflag = 0;
105 while ((ch = getopt(argc, argv, "HLPRfilnprv")) != -1)
106 switch (ch) {
107 case 'H':
108 Hflag = 1;
109 Lflag = Pflag = 0;
110 break;
111 case 'L':
112 Lflag = 1;
113 Hflag = Pflag = 0;
114 break;
115 case 'P':
116 Pflag = 1;
117 Hflag = Lflag = 0;
118 break;
119 case 'R':
120 Rflag = 1;
121 break;
122 case 'f':
123 fflag = 1;
124 iflag = nflag = 0;
125 break;
126 case 'i':
127 iflag = 1;
128 fflag = nflag = 0;
129 break;
130 case 'l':
131 lflag = 1;
132 break;
133 case 'n':
134 nflag = 1;
135 fflag = iflag = 0;
136 break;
137 case 'p':
138 pflag = 1;
139 break;
140 case 'r':
141 rflag = Lflag = 1;
142 Hflag = Pflag = 0;
143 break;
144 case 'v':
145 vflag = 1;
146 break;
147 default:
148 usage();
149 break;
150 }
151 argc -= optind;
152 argv += optind;
153
154 if (argc < 2)
155 usage();
156
157 fts_options = FTS_NOCHDIR | FTS_PHYSICAL;
158 if (Rflag && rflag)
159 errx(1, "the -R and -r options may not be specified together");
160 if (rflag)
161 Rflag = 1;
162 if (Rflag) {
163 if (Hflag)
164 fts_options |= FTS_COMFOLLOW;
165 if (Lflag) {
166 fts_options &= ~FTS_PHYSICAL;
167 fts_options |= FTS_LOGICAL;
168 }
169 } else {
170 fts_options &= ~FTS_PHYSICAL;
171 fts_options |= FTS_LOGICAL | FTS_COMFOLLOW;
172 }
173 (void)signal(SIGINFO, siginfo);
174
175 /* Save the target base in "to". */
176 target = argv[--argc];
177 if (strlcpy(to.p_path, target, sizeof(to.p_path)) >= sizeof(to.p_path))
178 errx(1, "%s: name too long", target);
179 to.p_end = to.p_path + strlen(to.p_path);
180 if (to.p_path == to.p_end) {
181 *to.p_end++ = '.';
182 *to.p_end = 0;
183 }
184 have_trailing_slash = (to.p_end[-1] == '/');
185 if (have_trailing_slash)
186 STRIP_TRAILING_SLASH(to);
187 to.target_end = to.p_end;
188
189 /* Set end of argument list for fts(3). */
190 argv[argc] = NULL;
191
192 /*
193 * Cp has two distinct cases:
194 *
195 * cp [-R] source target
196 * cp [-R] source1 ... sourceN directory
197 *
198 * In both cases, source can be either a file or a directory.
199 *
200 * In (1), the target becomes a copy of the source. That is, if the
201 * source is a file, the target will be a file, and likewise for
202 * directories.
203 *
204 * In (2), the real target is not directory, but "directory/source".
205 */
206 r = stat(to.p_path, &to_stat);
207 if (r == -1 && errno != ENOENT)
208 err(1, "%s", to.p_path);
209 if (r == -1 || !S_ISDIR(to_stat.st_mode)) {
210 /*
211 * Case (1). Target is not a directory.
212 */
213 if (argc > 1) {
|
215 exit(1);
216 }
217 /*
218 * Need to detect the case:
219 * cp -R dir foo
220 * Where dir is a directory and foo does not exist, where
221 * we want pathname concatenations turned on but not for
222 * the initial mkdir().
223 */
224 if (r == -1) {
225 if (Rflag && (Lflag || Hflag))
226 stat(*argv, &tmp_stat);
227 else
228 lstat(*argv, &tmp_stat);
229
230 if (S_ISDIR(tmp_stat.st_mode) && Rflag)
231 type = DIR_TO_DNE;
232 else
233 type = FILE_TO_FILE;
234 } else
235 type = FILE_TO_FILE;
236
237 if (have_trailing_slash && type == FILE_TO_FILE) {
238 if (r == -1)
239 errx(1, "directory %s does not exist",
240 to.p_path);
241 else
242 errx(1, "%s is not a directory", to.p_path);
243 }
244 } else
245 /*
246 * Case (2). Target is a directory.
247 */
248 type = FILE_TO_DIR;
249
250 exit (copy(argv, type, fts_options));
251}
252
253static int
254copy(char *argv[], enum op type, int fts_options)
255{
256 struct stat to_stat;
257 FTS *ftsp;
258 FTSENT *curr;
259 int base = 0, dne, badcp, rval;
260 size_t nlen;
261 char *p, *target_mid;
262 mode_t mask, mode;
263
264 /*
265 * Keep an inverted copy of the umask, for use in correcting
266 * permissions on created directories when not using -p.
267 */
268 mask = ~umask(0777);
269 umask(~mask);
270
271 if ((ftsp = fts_open(argv, fts_options, mastercmp)) == NULL)
272 err(1, "fts_open");
273 for (badcp = rval = 0; (curr = fts_read(ftsp)) != NULL; badcp = 0) {
274 switch (curr->fts_info) {
275 case FTS_NS:
276 case FTS_DNR:
277 case FTS_ERR:
278 warnx("%s: %s",
279 curr->fts_path, strerror(curr->fts_errno));
280 badcp = rval = 1;
281 continue;
282 case FTS_DC: /* Warn, continue. */
283 warnx("%s: directory causes a cycle", curr->fts_path);
284 badcp = rval = 1;
285 continue;
286 default:
287 ;
288 }
289
290 /*
291 * If we are in case (2) or (3) above, we need to append the
292 * source name to the target name.
293 */
294 if (type != FILE_TO_FILE) {
295 /*
296 * Need to remember the roots of traversals to create
297 * correct pathnames. If there's a directory being
298 * copied to a non-existent directory, e.g.
299 * cp -R a/dir noexist
300 * the resulting path name should be noexist/foo, not
301 * noexist/dir/foo (where foo is a file in dir), which
302 * is the case where the target exists.
303 *
304 * Also, check for "..". This is for correct path
305 * concatenation for paths ending in "..", e.g.
306 * cp -R .. /tmp
307 * Paths ending in ".." are changed to ".". This is
308 * tricky, but seems the easiest way to fix the problem.
309 *
310 * XXX
311 * Since the first level MUST be FTS_ROOTLEVEL, base
312 * is always initialized.
313 */
314 if (curr->fts_level == FTS_ROOTLEVEL) {
315 if (type != DIR_TO_DNE) {
316 p = strrchr(curr->fts_path, '/');
317 base = (p == NULL) ? 0 :
318 (int)(p - curr->fts_path + 1);
319
320 if (!strcmp(&curr->fts_path[base],
321 ".."))
322 base += 1;
323 } else
324 base = curr->fts_pathlen;
325 }
326
327 p = &curr->fts_path[base];
328 nlen = curr->fts_pathlen - base;
329 target_mid = to.target_end;
330 if (*p != '/' && target_mid[-1] != '/')
331 *target_mid++ = '/';
332 *target_mid = 0;
333 if (target_mid - to.p_path + nlen >= PATH_MAX) {
334 warnx("%s%s: name too long (not copied)",
335 to.p_path, p);
336 badcp = rval = 1;
337 continue;
338 }
339 (void)strncat(target_mid, p, nlen);
340 to.p_end = target_mid + nlen;
341 *to.p_end = 0;
342 STRIP_TRAILING_SLASH(to);
343 }
344
345 if (curr->fts_info == FTS_DP) {
346 /*
347 * We are nearly finished with this directory. If we
348 * didn't actually copy it, or otherwise don't need to
349 * change its attributes, then we are done.
350 */
351 if (!curr->fts_number)
352 continue;
353 /*
354 * If -p is in effect, set all the attributes.
355 * Otherwise, set the correct permissions, limited
356 * by the umask. Optimise by avoiding a chmod()
357 * if possible (which is usually the case if we
358 * made the directory). Note that mkdir() does not
359 * honour setuid, setgid and sticky bits, but we
360 * normally want to preserve them on directories.
361 */
362 if (pflag) {
363 if (setfile(curr->fts_statp, -1))
364 rval = 1;
365 if (preserve_dir_acls(curr->fts_statp,
366 curr->fts_accpath, to.p_path) != 0)
367 rval = 1;
368 } else {
369 mode = curr->fts_statp->st_mode;
370 if ((mode & (S_ISUID | S_ISGID | S_ISTXT)) ||
371 ((mode | S_IRWXU) & mask) != (mode & mask))
372 if (chmod(to.p_path, mode & mask) != 0){
373 warn("chmod: %s", to.p_path);
374 rval = 1;
375 }
376 }
377 continue;
378 }
379
380 /* Not an error but need to remember it happened */
381 if (stat(to.p_path, &to_stat) == -1)
382 dne = 1;
383 else {
384 if (to_stat.st_dev == curr->fts_statp->st_dev &&
385 to_stat.st_ino == curr->fts_statp->st_ino) {
386 warnx("%s and %s are identical (not copied).",
387 to.p_path, curr->fts_path);
388 badcp = rval = 1;
389 if (S_ISDIR(curr->fts_statp->st_mode))
390 (void)fts_set(ftsp, curr, FTS_SKIP);
391 continue;
392 }
393 if (!S_ISDIR(curr->fts_statp->st_mode) &&
394 S_ISDIR(to_stat.st_mode)) {
395 warnx("cannot overwrite directory %s with "
396 "non-directory %s",
397 to.p_path, curr->fts_path);
398 badcp = rval = 1;
399 continue;
400 }
401 dne = 0;
402 }
403
404 switch (curr->fts_statp->st_mode & S_IFMT) {
405 case S_IFLNK:
406 /* Catch special case of a non-dangling symlink */
407 if ((fts_options & FTS_LOGICAL) ||
408 ((fts_options & FTS_COMFOLLOW) &&
409 curr->fts_level == 0)) {
410 if (copy_file(curr, dne))
411 badcp = rval = 1;
412 } else {
413 if (copy_link(curr, !dne))
414 badcp = rval = 1;
415 }
416 break;
417 case S_IFDIR:
418 if (!Rflag) {
419 warnx("%s is a directory (not copied).",
420 curr->fts_path);
421 (void)fts_set(ftsp, curr, FTS_SKIP);
422 badcp = rval = 1;
423 break;
424 }
425 /*
426 * If the directory doesn't exist, create the new
427 * one with the from file mode plus owner RWX bits,
428 * modified by the umask. Trade-off between being
429 * able to write the directory (if from directory is
430 * 555) and not causing a permissions race. If the
431 * umask blocks owner writes, we fail..
432 */
433 if (dne) {
434 if (mkdir(to.p_path,
435 curr->fts_statp->st_mode | S_IRWXU) < 0)
436 err(1, "%s", to.p_path);
437 } else if (!S_ISDIR(to_stat.st_mode)) {
438 errno = ENOTDIR;
439 err(1, "%s", to.p_path);
440 }
441 /*
442 * Arrange to correct directory attributes later
443 * (in the post-order phase) if this is a new
444 * directory, or if the -p flag is in effect.
445 */
446 curr->fts_number = pflag || dne;
447 break;
448 case S_IFBLK:
449 case S_IFCHR:
450 if (Rflag) {
451 if (copy_special(curr->fts_statp, !dne))
452 badcp = rval = 1;
453 } else {
454 if (copy_file(curr, dne))
455 badcp = rval = 1;
456 }
457 break;
458 case S_IFSOCK:
459 warnx("%s is a socket (not copied).",
460 curr->fts_path);
461 case S_IFIFO:
462 if (Rflag) {
463 if (copy_fifo(curr->fts_statp, !dne))
464 badcp = rval = 1;
465 } else {
466 if (copy_file(curr, dne))
467 badcp = rval = 1;
468 }
469 break;
470 default:
471 if (copy_file(curr, dne))
472 badcp = rval = 1;
473 break;
474 }
475 if (vflag && !badcp)
476 (void)printf("%s -> %s\n", curr->fts_path, to.p_path);
477 }
478 if (errno)
479 err(1, "fts_read");
480 fts_close(ftsp);
481 return (rval);
482}
483
484/*
485 * mastercmp --
486 * The comparison function for the copy order. The order is to copy
487 * non-directory files before directory files. The reason for this
488 * is because files tend to be in the same cylinder group as their
489 * parent directory, whereas directories tend not to be. Copying the
490 * files first reduces seeking.
491 */
492static int
493mastercmp(const FTSENT * const *a, const FTSENT * const *b)
494{
495 int a_info, b_info;
496
497 a_info = (*a)->fts_info;
498 if (a_info == FTS_ERR || a_info == FTS_NS || a_info == FTS_DNR)
499 return (0);
500 b_info = (*b)->fts_info;
501 if (b_info == FTS_ERR || b_info == FTS_NS || b_info == FTS_DNR)
502 return (0);
503 if (a_info == FTS_D)
504 return (-1);
505 if (b_info == FTS_D)
506 return (1);
507 return (0);
508}
509
510static void
511siginfo(int sig __unused)
512{
513
514 info = 1;
515}
| 215 exit(1);
216 }
217 /*
218 * Need to detect the case:
219 * cp -R dir foo
220 * Where dir is a directory and foo does not exist, where
221 * we want pathname concatenations turned on but not for
222 * the initial mkdir().
223 */
224 if (r == -1) {
225 if (Rflag && (Lflag || Hflag))
226 stat(*argv, &tmp_stat);
227 else
228 lstat(*argv, &tmp_stat);
229
230 if (S_ISDIR(tmp_stat.st_mode) && Rflag)
231 type = DIR_TO_DNE;
232 else
233 type = FILE_TO_FILE;
234 } else
235 type = FILE_TO_FILE;
236
237 if (have_trailing_slash && type == FILE_TO_FILE) {
238 if (r == -1)
239 errx(1, "directory %s does not exist",
240 to.p_path);
241 else
242 errx(1, "%s is not a directory", to.p_path);
243 }
244 } else
245 /*
246 * Case (2). Target is a directory.
247 */
248 type = FILE_TO_DIR;
249
250 exit (copy(argv, type, fts_options));
251}
252
253static int
254copy(char *argv[], enum op type, int fts_options)
255{
256 struct stat to_stat;
257 FTS *ftsp;
258 FTSENT *curr;
259 int base = 0, dne, badcp, rval;
260 size_t nlen;
261 char *p, *target_mid;
262 mode_t mask, mode;
263
264 /*
265 * Keep an inverted copy of the umask, for use in correcting
266 * permissions on created directories when not using -p.
267 */
268 mask = ~umask(0777);
269 umask(~mask);
270
271 if ((ftsp = fts_open(argv, fts_options, mastercmp)) == NULL)
272 err(1, "fts_open");
273 for (badcp = rval = 0; (curr = fts_read(ftsp)) != NULL; badcp = 0) {
274 switch (curr->fts_info) {
275 case FTS_NS:
276 case FTS_DNR:
277 case FTS_ERR:
278 warnx("%s: %s",
279 curr->fts_path, strerror(curr->fts_errno));
280 badcp = rval = 1;
281 continue;
282 case FTS_DC: /* Warn, continue. */
283 warnx("%s: directory causes a cycle", curr->fts_path);
284 badcp = rval = 1;
285 continue;
286 default:
287 ;
288 }
289
290 /*
291 * If we are in case (2) or (3) above, we need to append the
292 * source name to the target name.
293 */
294 if (type != FILE_TO_FILE) {
295 /*
296 * Need to remember the roots of traversals to create
297 * correct pathnames. If there's a directory being
298 * copied to a non-existent directory, e.g.
299 * cp -R a/dir noexist
300 * the resulting path name should be noexist/foo, not
301 * noexist/dir/foo (where foo is a file in dir), which
302 * is the case where the target exists.
303 *
304 * Also, check for "..". This is for correct path
305 * concatenation for paths ending in "..", e.g.
306 * cp -R .. /tmp
307 * Paths ending in ".." are changed to ".". This is
308 * tricky, but seems the easiest way to fix the problem.
309 *
310 * XXX
311 * Since the first level MUST be FTS_ROOTLEVEL, base
312 * is always initialized.
313 */
314 if (curr->fts_level == FTS_ROOTLEVEL) {
315 if (type != DIR_TO_DNE) {
316 p = strrchr(curr->fts_path, '/');
317 base = (p == NULL) ? 0 :
318 (int)(p - curr->fts_path + 1);
319
320 if (!strcmp(&curr->fts_path[base],
321 ".."))
322 base += 1;
323 } else
324 base = curr->fts_pathlen;
325 }
326
327 p = &curr->fts_path[base];
328 nlen = curr->fts_pathlen - base;
329 target_mid = to.target_end;
330 if (*p != '/' && target_mid[-1] != '/')
331 *target_mid++ = '/';
332 *target_mid = 0;
333 if (target_mid - to.p_path + nlen >= PATH_MAX) {
334 warnx("%s%s: name too long (not copied)",
335 to.p_path, p);
336 badcp = rval = 1;
337 continue;
338 }
339 (void)strncat(target_mid, p, nlen);
340 to.p_end = target_mid + nlen;
341 *to.p_end = 0;
342 STRIP_TRAILING_SLASH(to);
343 }
344
345 if (curr->fts_info == FTS_DP) {
346 /*
347 * We are nearly finished with this directory. If we
348 * didn't actually copy it, or otherwise don't need to
349 * change its attributes, then we are done.
350 */
351 if (!curr->fts_number)
352 continue;
353 /*
354 * If -p is in effect, set all the attributes.
355 * Otherwise, set the correct permissions, limited
356 * by the umask. Optimise by avoiding a chmod()
357 * if possible (which is usually the case if we
358 * made the directory). Note that mkdir() does not
359 * honour setuid, setgid and sticky bits, but we
360 * normally want to preserve them on directories.
361 */
362 if (pflag) {
363 if (setfile(curr->fts_statp, -1))
364 rval = 1;
365 if (preserve_dir_acls(curr->fts_statp,
366 curr->fts_accpath, to.p_path) != 0)
367 rval = 1;
368 } else {
369 mode = curr->fts_statp->st_mode;
370 if ((mode & (S_ISUID | S_ISGID | S_ISTXT)) ||
371 ((mode | S_IRWXU) & mask) != (mode & mask))
372 if (chmod(to.p_path, mode & mask) != 0){
373 warn("chmod: %s", to.p_path);
374 rval = 1;
375 }
376 }
377 continue;
378 }
379
380 /* Not an error but need to remember it happened */
381 if (stat(to.p_path, &to_stat) == -1)
382 dne = 1;
383 else {
384 if (to_stat.st_dev == curr->fts_statp->st_dev &&
385 to_stat.st_ino == curr->fts_statp->st_ino) {
386 warnx("%s and %s are identical (not copied).",
387 to.p_path, curr->fts_path);
388 badcp = rval = 1;
389 if (S_ISDIR(curr->fts_statp->st_mode))
390 (void)fts_set(ftsp, curr, FTS_SKIP);
391 continue;
392 }
393 if (!S_ISDIR(curr->fts_statp->st_mode) &&
394 S_ISDIR(to_stat.st_mode)) {
395 warnx("cannot overwrite directory %s with "
396 "non-directory %s",
397 to.p_path, curr->fts_path);
398 badcp = rval = 1;
399 continue;
400 }
401 dne = 0;
402 }
403
404 switch (curr->fts_statp->st_mode & S_IFMT) {
405 case S_IFLNK:
406 /* Catch special case of a non-dangling symlink */
407 if ((fts_options & FTS_LOGICAL) ||
408 ((fts_options & FTS_COMFOLLOW) &&
409 curr->fts_level == 0)) {
410 if (copy_file(curr, dne))
411 badcp = rval = 1;
412 } else {
413 if (copy_link(curr, !dne))
414 badcp = rval = 1;
415 }
416 break;
417 case S_IFDIR:
418 if (!Rflag) {
419 warnx("%s is a directory (not copied).",
420 curr->fts_path);
421 (void)fts_set(ftsp, curr, FTS_SKIP);
422 badcp = rval = 1;
423 break;
424 }
425 /*
426 * If the directory doesn't exist, create the new
427 * one with the from file mode plus owner RWX bits,
428 * modified by the umask. Trade-off between being
429 * able to write the directory (if from directory is
430 * 555) and not causing a permissions race. If the
431 * umask blocks owner writes, we fail..
432 */
433 if (dne) {
434 if (mkdir(to.p_path,
435 curr->fts_statp->st_mode | S_IRWXU) < 0)
436 err(1, "%s", to.p_path);
437 } else if (!S_ISDIR(to_stat.st_mode)) {
438 errno = ENOTDIR;
439 err(1, "%s", to.p_path);
440 }
441 /*
442 * Arrange to correct directory attributes later
443 * (in the post-order phase) if this is a new
444 * directory, or if the -p flag is in effect.
445 */
446 curr->fts_number = pflag || dne;
447 break;
448 case S_IFBLK:
449 case S_IFCHR:
450 if (Rflag) {
451 if (copy_special(curr->fts_statp, !dne))
452 badcp = rval = 1;
453 } else {
454 if (copy_file(curr, dne))
455 badcp = rval = 1;
456 }
457 break;
458 case S_IFSOCK:
459 warnx("%s is a socket (not copied).",
460 curr->fts_path);
461 case S_IFIFO:
462 if (Rflag) {
463 if (copy_fifo(curr->fts_statp, !dne))
464 badcp = rval = 1;
465 } else {
466 if (copy_file(curr, dne))
467 badcp = rval = 1;
468 }
469 break;
470 default:
471 if (copy_file(curr, dne))
472 badcp = rval = 1;
473 break;
474 }
475 if (vflag && !badcp)
476 (void)printf("%s -> %s\n", curr->fts_path, to.p_path);
477 }
478 if (errno)
479 err(1, "fts_read");
480 fts_close(ftsp);
481 return (rval);
482}
483
484/*
485 * mastercmp --
486 * The comparison function for the copy order. The order is to copy
487 * non-directory files before directory files. The reason for this
488 * is because files tend to be in the same cylinder group as their
489 * parent directory, whereas directories tend not to be. Copying the
490 * files first reduces seeking.
491 */
492static int
493mastercmp(const FTSENT * const *a, const FTSENT * const *b)
494{
495 int a_info, b_info;
496
497 a_info = (*a)->fts_info;
498 if (a_info == FTS_ERR || a_info == FTS_NS || a_info == FTS_DNR)
499 return (0);
500 b_info = (*b)->fts_info;
501 if (b_info == FTS_ERR || b_info == FTS_NS || b_info == FTS_DNR)
502 return (0);
503 if (a_info == FTS_D)
504 return (-1);
505 if (b_info == FTS_D)
506 return (1);
507 return (0);
508}
509
510static void
511siginfo(int sig __unused)
512{
513
514 info = 1;
515}
|