BYTE_ORDER ==> _BYTE_ORDER
[dragonfly.git] / usr.bin / xinstall / xinstall.c
CommitLineData
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1/*
2 * Copyright (c) 1987, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
1de703da
MD
32 *
33 * @(#) Copyright (c) 1987, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)xinstall.c 8.1 (Berkeley) 7/21/93
35 * $FreeBSD: src/usr.bin/xinstall/xinstall.c,v 1.38.2.8 2002/08/07 16:29:48 ru Exp $
739246af 36 * $DragonFly: src/usr.bin/xinstall/xinstall.c,v 1.4 2004/09/05 01:18:27 dillon Exp $
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37 */
38
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39#include <sys/param.h>
40#include <sys/mman.h>
41#include <sys/mount.h>
42#include <sys/stat.h>
43#include <sys/wait.h>
44
45#include <ctype.h>
46#include <err.h>
47#include <errno.h>
48#include <fcntl.h>
49#include <grp.h>
50#include <paths.h>
51#include <pwd.h>
52#include <stdio.h>
53#include <stdlib.h>
54#include <string.h>
55#include <sysexits.h>
56#include <unistd.h>
57#include <utime.h>
58
59#include "pathnames.h"
60
61/* Bootstrap aid - this doesn't exist in most older releases */
62#ifndef MAP_FAILED
63#define MAP_FAILED ((void *)-1) /* from <sys/mman.h> */
64#endif
65
66#define MAX_CMP_SIZE (16 * 1024 * 1024)
67
68#define DIRECTORY 0x01 /* Tell install it's a directory. */
69#define SETFLAGS 0x02 /* Tell install to set flags. */
70#define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND)
71#define BACKUP_SUFFIX ".old"
72
73struct passwd *pp;
74struct group *gp;
75gid_t gid;
76uid_t uid;
77int dobackup, docompare, dodir, dopreserve, dostrip, nommap, safecopy, verbose;
78mode_t mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH;
79const char *suffix = BACKUP_SUFFIX;
80
81void copy(int, const char *, int, const char *, off_t);
82int compare(int, const char *, size_t, int, const char *, size_t);
83int create_newfile(const char *, int, struct stat *);
84int create_tempfile(const char *, char *, size_t);
85void install(const char *, const char *, u_long, u_int);
86void install_dir(char *);
87u_long numeric_id(const char *, const char *);
88void strip(const char *);
89int trymmap(int);
90void usage(void);
91
92int
1d1731fa 93main(int argc, char **argv)
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94{
95 struct stat from_sb, to_sb;
96 mode_t *set;
97 u_long fset;
98 int ch, no_target;
99 u_int iflags;
100 char *flags;
101 const char *group, *owner, *to_name;
102
103 iflags = 0;
104 group = owner = NULL;
105 while ((ch = getopt(argc, argv, "B:bCcdf:g:Mm:o:pSsv")) != -1)
106 switch((char)ch) {
107 case 'B':
108 suffix = optarg;
109 /* FALLTHROUGH */
110 case 'b':
111 dobackup = 1;
112 break;
113 case 'C':
114 docompare = 1;
115 break;
116 case 'c':
117 /* For backwards compatibility. */
118 break;
119 case 'd':
120 dodir = 1;
121 break;
122 case 'f':
123 flags = optarg;
124 if (strtofflags(&flags, &fset, NULL))
125 errx(EX_USAGE, "%s: invalid flag", flags);
126 iflags |= SETFLAGS;
127 break;
128 case 'g':
129 group = optarg;
130 break;
131 case 'M':
132 nommap = 1;
133 break;
134 case 'm':
135 if (!(set = setmode(optarg)))
136 errx(EX_USAGE, "invalid file mode: %s",
137 optarg);
138 mode = getmode(set, 0);
139 free(set);
140 break;
141 case 'o':
142 owner = optarg;
143 break;
144 case 'p':
145 docompare = dopreserve = 1;
146 break;
147 case 'S':
148 safecopy = 1;
149 break;
150 case 's':
151 dostrip = 1;
152 break;
153 case 'v':
154 verbose = 1;
155 break;
156 case '?':
157 default:
158 usage();
159 }
160 argc -= optind;
161 argv += optind;
162
163 /* some options make no sense when creating directories */
164 if (dostrip && dodir)
165 usage();
166
167 /* must have at least two arguments, except when creating directories */
168 if (argc < 2 && !dodir)
169 usage();
170
171 /* need to make a temp copy so we can compare stripped version */
172 if (docompare && dostrip)
173 safecopy = 1;
174
175 /* get group and owner id's */
176 if (group != NULL) {
177 if ((gp = getgrnam(group)) != NULL)
178 gid = gp->gr_gid;
179 else
180 gid = (gid_t)numeric_id(group, "group");
181 } else
182 gid = (gid_t)-1;
183
184 if (owner != NULL) {
185 if ((pp = getpwnam(owner)) != NULL)
186 uid = pp->pw_uid;
187 else
188 uid = (uid_t)numeric_id(owner, "user");
189 } else
190 uid = (uid_t)-1;
191
192 if (dodir) {
193 for (; *argv != NULL; ++argv)
194 install_dir(*argv);
195 exit(EX_OK);
196 /* NOTREACHED */
197 }
198
199 no_target = stat(to_name = argv[argc - 1], &to_sb);
200 if (!no_target && S_ISDIR(to_sb.st_mode)) {
201 for (; *argv != to_name; ++argv)
202 install(*argv, to_name, fset, iflags | DIRECTORY);
203 exit(EX_OK);
204 /* NOTREACHED */
205 }
206
207 /* can't do file1 file2 directory/file */
208 if (argc != 2)
209 usage();
210
211 if (!no_target) {
212 if (stat(*argv, &from_sb))
213 err(EX_OSERR, "%s", *argv);
214 if (!S_ISREG(to_sb.st_mode)) {
215 errno = EFTYPE;
216 err(EX_OSERR, "%s", to_name);
217 }
218 if (to_sb.st_dev == from_sb.st_dev &&
219 to_sb.st_ino == from_sb.st_ino)
220 errx(EX_USAGE,
221 "%s and %s are the same file", *argv, to_name);
222 }
223 install(*argv, to_name, fset, iflags);
224 exit(EX_OK);
225 /* NOTREACHED */
226}
227
228u_long
1d1731fa 229numeric_id(const char *name, const char *type)
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230{
231 u_long val;
232 char *ep;
233
234 /*
235 * XXX
236 * We know that uid_t's and gid_t's are unsigned longs.
237 */
238 errno = 0;
239 val = strtoul(name, &ep, 10);
240 if (errno)
241 err(EX_NOUSER, "%s", name);
242 if (*ep != '\0')
243 errx(EX_NOUSER, "unknown %s %s", type, name);
244 return (val);
245}
246
247/*
248 * install --
249 * build a path name and install the file
250 */
251void
1d1731fa 252install(const char *from_name, const char *to_name, u_long fset, u_int flags)
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253{
254 struct stat from_sb, temp_sb, to_sb;
255 struct utimbuf utb;
256 int devnull, files_match, from_fd, serrno, target;
257 int tempcopy, temp_fd, to_fd;
258 char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN];
259
260 files_match = 0;
261
262 /* If try to install NULL file to a directory, fails. */
263 if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) {
264 if (stat(from_name, &from_sb))
265 err(EX_OSERR, "%s", from_name);
266 if (!S_ISREG(from_sb.st_mode)) {
267 errno = EFTYPE;
268 err(EX_OSERR, "%s", from_name);
269 }
270 /* Build the target path. */
271 if (flags & DIRECTORY) {
739246af 272 snprintf(pathbuf, sizeof(pathbuf), "%s/%s",
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273 to_name,
274 (p = strrchr(from_name, '/')) ? ++p : from_name);
275 to_name = pathbuf;
276 }
277 devnull = 0;
278 } else {
279 devnull = 1;
280 }
281
282 target = stat(to_name, &to_sb) == 0;
283
284 /* Only install to regular files. */
285 if (target && !S_ISREG(to_sb.st_mode)) {
286 errno = EFTYPE;
287 warn("%s", to_name);
288 return;
289 }
290
291 /* Only copy safe if the target exists. */
292 tempcopy = safecopy && target;
293
294 if (!devnull && (from_fd = open(from_name, O_RDONLY, 0)) < 0)
295 err(EX_OSERR, "%s", from_name);
296
297 /* If we don't strip, we can compare first. */
298 if (docompare && !dostrip && target) {
299 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
300 err(EX_OSERR, "%s", to_name);
301 if (devnull)
302 files_match = to_sb.st_size == 0;
303 else
304 files_match = !(compare(from_fd, from_name,
305 (size_t)from_sb.st_size, to_fd,
306 to_name, (size_t)to_sb.st_size));
307
308 /* Close "to" file unless we match. */
309 if (!files_match)
739246af 310 close(to_fd);
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311 }
312
313 if (!files_match) {
314 if (tempcopy) {
315 to_fd = create_tempfile(to_name, tempfile,
316 sizeof(tempfile));
317 if (to_fd < 0)
318 err(EX_OSERR, "%s", tempfile);
319 } else {
320 if ((to_fd = create_newfile(to_name, target,
321 &to_sb)) < 0)
322 err(EX_OSERR, "%s", to_name);
323 if (verbose)
739246af 324 printf("install: %s -> %s\n",
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325 from_name, to_name);
326 }
327 if (!devnull)
328 copy(from_fd, from_name, to_fd,
329 tempcopy ? tempfile : to_name, from_sb.st_size);
330 }
331
332 if (dostrip) {
333 strip(tempcopy ? tempfile : to_name);
334
335 /*
336 * Re-open our fd on the target, in case we used a strip
337 * that does not work in-place -- like GNU binutils strip.
338 */
339 close(to_fd);
340 to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY, 0);
341 if (to_fd < 0)
342 err(EX_OSERR, "stripping %s", to_name);
343 }
344
345 /*
346 * Compare the stripped temp file with the target.
347 */
348 if (docompare && dostrip && target) {
349 temp_fd = to_fd;
350
351 /* Re-open to_fd using the real target name. */
352 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
353 err(EX_OSERR, "%s", to_name);
354
355 if (fstat(temp_fd, &temp_sb)) {
356 serrno = errno;
739246af 357 unlink(tempfile);
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358 errno = serrno;
359 err(EX_OSERR, "%s", tempfile);
360 }
361
362 if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd,
363 to_name, (size_t)to_sb.st_size) == 0) {
364 /*
365 * If target has more than one link we need to
366 * replace it in order to snap the extra links.
367 * Need to preserve target file times, though.
368 */
369 if (to_sb.st_nlink != 1) {
370 utb.actime = to_sb.st_atime;
371 utb.modtime = to_sb.st_mtime;
739246af 372 utime(tempfile, &utb);
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MD
373 } else {
374 files_match = 1;
739246af 375 unlink(tempfile);
984263bc 376 }
739246af 377 close(temp_fd);
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MD
378 }
379 }
380
381 /*
382 * Move the new file into place if doing a safe copy
383 * and the files are different (or just not compared).
384 */
385 if (tempcopy && !files_match) {
386 /* Try to turn off the immutable bits. */
387 if (to_sb.st_flags & NOCHANGEBITS)
739246af 388 chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS);
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389 if (dobackup) {
390 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name,
391 suffix) != strlen(to_name) + strlen(suffix)) {
392 unlink(tempfile);
393 errx(EX_OSERR, "%s: backup filename too long",
394 to_name);
395 }
396 if (verbose)
739246af 397 printf("install: %s -> %s\n", to_name, backup);
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MD
398 if (rename(to_name, backup) < 0) {
399 serrno = errno;
400 unlink(tempfile);
401 errno = serrno;
402 err(EX_OSERR, "rename: %s to %s", to_name,
403 backup);
404 }
405 }
406 if (verbose)
739246af 407 printf("install: %s -> %s\n", from_name, to_name);
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MD
408 if (rename(tempfile, to_name) < 0) {
409 serrno = errno;
410 unlink(tempfile);
411 errno = serrno;
412 err(EX_OSERR, "rename: %s to %s",
413 tempfile, to_name);
414 }
415
416 /* Re-open to_fd so we aren't hosed by the rename(2). */
739246af 417 close(to_fd);
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418 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
419 err(EX_OSERR, "%s", to_name);
420 }
421
422 /*
423 * Preserve the timestamp of the source file if necessary.
424 */
425 if (dopreserve && !files_match && !devnull) {
426 utb.actime = from_sb.st_atime;
427 utb.modtime = from_sb.st_mtime;
739246af 428 utime(to_name, &utb);
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MD
429 }
430
431 if (fstat(to_fd, &to_sb) == -1) {
432 serrno = errno;
739246af 433 unlink(to_name);
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MD
434 errno = serrno;
435 err(EX_OSERR, "%s", to_name);
436 }
437
438 /*
439 * Set owner, group, mode for target; do the chown first,
440 * chown may lose the setuid bits.
441 */
442 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) ||
443 (uid != (uid_t)-1 && uid != to_sb.st_uid) ||
444 (mode != to_sb.st_mode)) {
445 /* Try to turn off the immutable bits. */
446 if (to_sb.st_flags & NOCHANGEBITS)
739246af 447 fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS);
984263bc
MD
448 }
449
450 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) ||
451 (uid != (uid_t)-1 && uid != to_sb.st_uid))
452 if (fchown(to_fd, uid, gid) == -1) {
453 serrno = errno;
739246af 454 unlink(to_name);
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455 errno = serrno;
456 err(EX_OSERR,"%s: chown/chgrp", to_name);
457 }
458
459 if (mode != to_sb.st_mode)
460 if (fchmod(to_fd, mode)) {
461 serrno = errno;
739246af 462 unlink(to_name);
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463 errno = serrno;
464 err(EX_OSERR, "%s: chmod", to_name);
465 }
466
467 /*
468 * If provided a set of flags, set them, otherwise, preserve the
469 * flags, except for the dump flag.
470 * NFS does not support flags. Ignore EOPNOTSUPP flags if we're just
471 * trying to turn off UF_NODUMP. If we're trying to set real flags,
472 * then warn if the the fs doesn't support it, otherwise fail.
473 */
474 if (!devnull && fchflags(to_fd,
475 flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) {
476 if (flags & SETFLAGS) {
477 if (errno == EOPNOTSUPP)
478 warn("%s: chflags", to_name);
479 else {
480 serrno = errno;
739246af 481 unlink(to_name);
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482 errno = serrno;
483 err(EX_OSERR, "%s: chflags", to_name);
484 }
485 }
486 }
487
739246af 488 close(to_fd);
984263bc 489 if (!devnull)
739246af 490 close(from_fd);
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MD
491}
492
493/*
494 * compare --
495 * compare two files; non-zero means files differ
496 */
497int
498compare(int from_fd, const char *from_name __unused, size_t from_len,
499 int to_fd, const char *to_name __unused, size_t to_len)
500{
501 char *p, *q;
502 int rv;
503 int done_compare;
504
505 rv = 0;
506 if (from_len != to_len)
507 return 1;
508
509 if (from_len <= MAX_CMP_SIZE) {
510 done_compare = 0;
511 if (trymmap(from_fd) && trymmap(to_fd)) {
512 p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, from_fd, (off_t)0);
513 if (p == (char *)MAP_FAILED)
514 goto out;
515 q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, to_fd, (off_t)0);
516 if (q == (char *)MAP_FAILED) {
517 munmap(p, from_len);
518 goto out;
519 }
520
521 rv = memcmp(p, q, from_len);
522 munmap(p, from_len);
523 munmap(q, from_len);
524 done_compare = 1;
525 }
526 out:
527 if (!done_compare) {
528 char buf1[MAXBSIZE];
529 char buf2[MAXBSIZE];
530 int n1, n2;
531
532 rv = 0;
533 lseek(from_fd, 0, SEEK_SET);
534 lseek(to_fd, 0, SEEK_SET);
535 while (rv == 0) {
536 n1 = read(from_fd, buf1, sizeof(buf1));
537 if (n1 == 0)
538 break; /* EOF */
539 else if (n1 > 0) {
540 n2 = read(to_fd, buf2, n1);
541 if (n2 == n1)
542 rv = memcmp(buf1, buf2, n1);
543 else
544 rv = 1; /* out of sync */
545 } else
546 rv = 1; /* read failure */
547 }
548 lseek(from_fd, 0, SEEK_SET);
549 lseek(to_fd, 0, SEEK_SET);
550 }
551 } else
552 rv = 1; /* don't bother in this case */
553
554 return rv;
555}
556
557/*
558 * create_tempfile --
559 * create a temporary file based on path and open it
560 */
561int
1d1731fa 562create_tempfile(const char *path, char *temp, size_t tsize)
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MD
563{
564 char *p;
565
739246af 566 strncpy(temp, path, tsize);
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567 temp[tsize - 1] = '\0';
568 if ((p = strrchr(temp, '/')) != NULL)
569 p++;
570 else
571 p = temp;
739246af 572 strncpy(p, "INS@XXXX", &temp[tsize - 1] - p);
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573 temp[tsize - 1] = '\0';
574 return (mkstemp(temp));
575}
576
577/*
578 * create_newfile --
579 * create a new file, overwriting an existing one if necessary
580 */
581int
1d1731fa 582create_newfile(const char *path, int target, struct stat *sbp)
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MD
583{
584 char backup[MAXPATHLEN];
585
586 if (target) {
587 /*
588 * Unlink now... avoid ETXTBSY errors later. Try to turn
589 * off the append/immutable bits -- if we fail, go ahead,
590 * it might work.
591 */
592 if (sbp->st_flags & NOCHANGEBITS)
739246af 593 chflags(path, sbp->st_flags & ~NOCHANGEBITS);
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594
595 if (dobackup) {
596 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s",
597 path, suffix) != strlen(path) + strlen(suffix))
598 errx(EX_OSERR, "%s: backup filename too long",
599 path);
739246af 600 snprintf(backup, MAXPATHLEN, "%s%s",
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601 path, suffix);
602 if (verbose)
739246af 603 printf("install: %s -> %s\n",
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MD
604 path, backup);
605 if (rename(path, backup) < 0)
606 err(EX_OSERR, "rename: %s to %s", path, backup);
607 } else
739246af 608 unlink(path);
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609 }
610
611 return (open(path, O_CREAT | O_RDWR | O_TRUNC, S_IRUSR | S_IWUSR));
612}
613
614/*
615 * copy --
616 * copy from one file to another
617 */
618void
739246af 619copy(int from_fd, const char *from_name, int to_fd,
1d1731fa 620 const char *to_name, off_t size)
984263bc 621{
739246af 622 int nr, nw;
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MD
623 int serrno;
624 char *p, buf[MAXBSIZE];
625 int done_copy;
626
627 /* Rewind file descriptors. */
628 if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1)
629 err(EX_OSERR, "lseek: %s", from_name);
630 if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1)
631 err(EX_OSERR, "lseek: %s", to_name);
632
633 /*
634 * Mmap and write if less than 8M (the limit is so we don't totally
635 * trash memory on big files. This is really a minor hack, but it
636 * wins some CPU back.
637 */
638 done_copy = 0;
639 if (size <= 8 * 1048576 && trymmap(from_fd) &&
640 (p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED,
641 from_fd, (off_t)0)) != (char *)MAP_FAILED) {
642 if ((nw = write(to_fd, p, size)) != size) {
643 serrno = errno;
739246af 644 unlink(to_name);
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645 errno = nw > 0 ? EIO : serrno;
646 err(EX_OSERR, "%s", to_name);
647 }
648 done_copy = 1;
649 }
650 if (!done_copy) {
651 while ((nr = read(from_fd, buf, sizeof(buf))) > 0)
652 if ((nw = write(to_fd, buf, nr)) != nr) {
653 serrno = errno;
739246af 654 unlink(to_name);
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655 errno = nw > 0 ? EIO : serrno;
656 err(EX_OSERR, "%s", to_name);
657 }
658 if (nr != 0) {
659 serrno = errno;
739246af 660 unlink(to_name);
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661 errno = serrno;
662 err(EX_OSERR, "%s", from_name);
663 }
664 }
665}
666
667/*
668 * strip --
669 * use strip(1) to strip the target file
670 */
671void
1d1731fa 672strip(const char *to_name)
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MD
673{
674 const char *stripbin;
675 int serrno, status;
676
677 switch (fork()) {
678 case -1:
679 serrno = errno;
739246af 680 unlink(to_name);
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681 errno = serrno;
682 err(EX_TEMPFAIL, "fork");
683 case 0:
684 stripbin = getenv("STRIPBIN");
685 if (stripbin == NULL)
686 stripbin = "strip";
687 execlp(stripbin, stripbin, to_name, (char *)NULL);
688 err(EX_OSERR, "exec(%s)", stripbin);
689 default:
690 if (wait(&status) == -1 || status) {
691 serrno = errno;
739246af 692 unlink(to_name);
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693 errc(EX_SOFTWARE, serrno, "wait");
694 /* NOTREACHED */
695 }
696 }
697}
698
699/*
700 * install_dir --
739246af 701 * build directory hierarchy
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702 */
703void
1d1731fa 704install_dir(char *path)
984263bc 705{
739246af 706 char *p;
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707 struct stat sb;
708 int ch;
709
710 for (p = path;; ++p)
711 if (!*p || (p != path && *p == '/')) {
712 ch = *p;
713 *p = '\0';
714 if (stat(path, &sb)) {
715 if (errno != ENOENT || mkdir(path, 0755) < 0) {
716 err(EX_OSERR, "mkdir %s", path);
717 /* NOTREACHED */
718 } else if (verbose)
739246af 719 printf("install: mkdir %s\n",
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720 path);
721 } else if (!S_ISDIR(sb.st_mode))
722 errx(EX_OSERR, "%s exists but is not a directory", path);
723 if (!(*p = ch))
724 break;
725 }
726
727 if ((gid != (gid_t)-1 || uid != (uid_t)-1) && chown(path, uid, gid))
728 warn("chown %u:%u %s", uid, gid, path);
729 if (chmod(path, mode))
730 warn("chmod %o %s", mode, path);
731}
732
733/*
734 * usage --
735 * print a usage message and die
736 */
737void
1d1731fa 738usage(void)
984263bc 739{
739246af 740 fprintf(stderr, "\
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741usage: install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n\
742 [-o owner] file1 file2\n\
743 install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n\
744 [-o owner] file1 ... fileN directory\n\
745 install -d [-v] [-g group] [-m mode] [-o owner] directory ...\n");
746 exit(EX_USAGE);
747 /* NOTREACHED */
748}
749
750/*
751 * trymmap --
752 * return true (1) if mmap should be tried, false (0) if not.
753 */
754int
1d1731fa 755trymmap(int fd)
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756{
757/*
758 * The ifdef is for bootstrapping - f_fstypename doesn't exist in
759 * pre-Lite2-merge systems.
760 */
761#ifdef MFSNAMELEN
762 struct statfs stfs;
763
764 if (nommap || fstatfs(fd, &stfs) != 0)
765 return (0);
766 if (strcmp(stfs.f_fstypename, "ufs") == 0 ||
767 strcmp(stfs.f_fstypename, "cd9660") == 0)
768 return (1);
769#endif
770 return (0);
771}