Initial import from FreeBSD RELENG_4:
[dragonfly.git] / usr.bin / xinstall / xinstall.c
CommitLineData
984263bc
MD
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.
32 */
33
34#ifndef lint
35static const char copyright[] =
36"@(#) Copyright (c) 1987, 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
38#endif /* not lint */
39
40#if 0
41#ifndef lint
42static char sccsid[] = "@(#)xinstall.c 8.1 (Berkeley) 7/21/93";
43#endif /* not lint */
44#endif
45
46#include <sys/cdefs.h>
47__FBSDID("$FreeBSD: src/usr.bin/xinstall/xinstall.c,v 1.38.2.8 2002/08/07 16:29:48 ru Exp $");
48
49#include <sys/param.h>
50#include <sys/mman.h>
51#include <sys/mount.h>
52#include <sys/stat.h>
53#include <sys/wait.h>
54
55#include <ctype.h>
56#include <err.h>
57#include <errno.h>
58#include <fcntl.h>
59#include <grp.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#include <utime.h>
68
69#include "pathnames.h"
70
71/* Bootstrap aid - this doesn't exist in most older releases */
72#ifndef MAP_FAILED
73#define MAP_FAILED ((void *)-1) /* from <sys/mman.h> */
74#endif
75
76#define MAX_CMP_SIZE (16 * 1024 * 1024)
77
78#define DIRECTORY 0x01 /* Tell install it's a directory. */
79#define SETFLAGS 0x02 /* Tell install to set flags. */
80#define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND)
81#define BACKUP_SUFFIX ".old"
82
83struct passwd *pp;
84struct group *gp;
85gid_t gid;
86uid_t uid;
87int dobackup, docompare, dodir, dopreserve, dostrip, nommap, safecopy, verbose;
88mode_t mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH;
89const char *suffix = BACKUP_SUFFIX;
90
91void copy(int, const char *, int, const char *, off_t);
92int compare(int, const char *, size_t, int, const char *, size_t);
93int create_newfile(const char *, int, struct stat *);
94int create_tempfile(const char *, char *, size_t);
95void install(const char *, const char *, u_long, u_int);
96void install_dir(char *);
97u_long numeric_id(const char *, const char *);
98void strip(const char *);
99int trymmap(int);
100void usage(void);
101
102int
103main(argc, argv)
104 int argc;
105 char *argv[];
106{
107 struct stat from_sb, to_sb;
108 mode_t *set;
109 u_long fset;
110 int ch, no_target;
111 u_int iflags;
112 char *flags;
113 const char *group, *owner, *to_name;
114
115 iflags = 0;
116 group = owner = NULL;
117 while ((ch = getopt(argc, argv, "B:bCcdf:g:Mm:o:pSsv")) != -1)
118 switch((char)ch) {
119 case 'B':
120 suffix = optarg;
121 /* FALLTHROUGH */
122 case 'b':
123 dobackup = 1;
124 break;
125 case 'C':
126 docompare = 1;
127 break;
128 case 'c':
129 /* For backwards compatibility. */
130 break;
131 case 'd':
132 dodir = 1;
133 break;
134 case 'f':
135 flags = optarg;
136 if (strtofflags(&flags, &fset, NULL))
137 errx(EX_USAGE, "%s: invalid flag", flags);
138 iflags |= SETFLAGS;
139 break;
140 case 'g':
141 group = optarg;
142 break;
143 case 'M':
144 nommap = 1;
145 break;
146 case 'm':
147 if (!(set = setmode(optarg)))
148 errx(EX_USAGE, "invalid file mode: %s",
149 optarg);
150 mode = getmode(set, 0);
151 free(set);
152 break;
153 case 'o':
154 owner = optarg;
155 break;
156 case 'p':
157 docompare = dopreserve = 1;
158 break;
159 case 'S':
160 safecopy = 1;
161 break;
162 case 's':
163 dostrip = 1;
164 break;
165 case 'v':
166 verbose = 1;
167 break;
168 case '?':
169 default:
170 usage();
171 }
172 argc -= optind;
173 argv += optind;
174
175 /* some options make no sense when creating directories */
176 if (dostrip && dodir)
177 usage();
178
179 /* must have at least two arguments, except when creating directories */
180 if (argc < 2 && !dodir)
181 usage();
182
183 /* need to make a temp copy so we can compare stripped version */
184 if (docompare && dostrip)
185 safecopy = 1;
186
187 /* get group and owner id's */
188 if (group != NULL) {
189 if ((gp = getgrnam(group)) != NULL)
190 gid = gp->gr_gid;
191 else
192 gid = (gid_t)numeric_id(group, "group");
193 } else
194 gid = (gid_t)-1;
195
196 if (owner != NULL) {
197 if ((pp = getpwnam(owner)) != NULL)
198 uid = pp->pw_uid;
199 else
200 uid = (uid_t)numeric_id(owner, "user");
201 } else
202 uid = (uid_t)-1;
203
204 if (dodir) {
205 for (; *argv != NULL; ++argv)
206 install_dir(*argv);
207 exit(EX_OK);
208 /* NOTREACHED */
209 }
210
211 no_target = stat(to_name = argv[argc - 1], &to_sb);
212 if (!no_target && S_ISDIR(to_sb.st_mode)) {
213 for (; *argv != to_name; ++argv)
214 install(*argv, to_name, fset, iflags | DIRECTORY);
215 exit(EX_OK);
216 /* NOTREACHED */
217 }
218
219 /* can't do file1 file2 directory/file */
220 if (argc != 2)
221 usage();
222
223 if (!no_target) {
224 if (stat(*argv, &from_sb))
225 err(EX_OSERR, "%s", *argv);
226 if (!S_ISREG(to_sb.st_mode)) {
227 errno = EFTYPE;
228 err(EX_OSERR, "%s", to_name);
229 }
230 if (to_sb.st_dev == from_sb.st_dev &&
231 to_sb.st_ino == from_sb.st_ino)
232 errx(EX_USAGE,
233 "%s and %s are the same file", *argv, to_name);
234 }
235 install(*argv, to_name, fset, iflags);
236 exit(EX_OK);
237 /* NOTREACHED */
238}
239
240u_long
241numeric_id(name, type)
242 const char *name, *type;
243{
244 u_long val;
245 char *ep;
246
247 /*
248 * XXX
249 * We know that uid_t's and gid_t's are unsigned longs.
250 */
251 errno = 0;
252 val = strtoul(name, &ep, 10);
253 if (errno)
254 err(EX_NOUSER, "%s", name);
255 if (*ep != '\0')
256 errx(EX_NOUSER, "unknown %s %s", type, name);
257 return (val);
258}
259
260/*
261 * install --
262 * build a path name and install the file
263 */
264void
265install(from_name, to_name, fset, flags)
266 const char *from_name, *to_name;
267 u_long fset;
268 u_int flags;
269{
270 struct stat from_sb, temp_sb, to_sb;
271 struct utimbuf utb;
272 int devnull, files_match, from_fd, serrno, target;
273 int tempcopy, temp_fd, to_fd;
274 char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN];
275
276 files_match = 0;
277
278 /* If try to install NULL file to a directory, fails. */
279 if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) {
280 if (stat(from_name, &from_sb))
281 err(EX_OSERR, "%s", from_name);
282 if (!S_ISREG(from_sb.st_mode)) {
283 errno = EFTYPE;
284 err(EX_OSERR, "%s", from_name);
285 }
286 /* Build the target path. */
287 if (flags & DIRECTORY) {
288 (void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s",
289 to_name,
290 (p = strrchr(from_name, '/')) ? ++p : from_name);
291 to_name = pathbuf;
292 }
293 devnull = 0;
294 } else {
295 devnull = 1;
296 }
297
298 target = stat(to_name, &to_sb) == 0;
299
300 /* Only install to regular files. */
301 if (target && !S_ISREG(to_sb.st_mode)) {
302 errno = EFTYPE;
303 warn("%s", to_name);
304 return;
305 }
306
307 /* Only copy safe if the target exists. */
308 tempcopy = safecopy && target;
309
310 if (!devnull && (from_fd = open(from_name, O_RDONLY, 0)) < 0)
311 err(EX_OSERR, "%s", from_name);
312
313 /* If we don't strip, we can compare first. */
314 if (docompare && !dostrip && target) {
315 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
316 err(EX_OSERR, "%s", to_name);
317 if (devnull)
318 files_match = to_sb.st_size == 0;
319 else
320 files_match = !(compare(from_fd, from_name,
321 (size_t)from_sb.st_size, to_fd,
322 to_name, (size_t)to_sb.st_size));
323
324 /* Close "to" file unless we match. */
325 if (!files_match)
326 (void)close(to_fd);
327 }
328
329 if (!files_match) {
330 if (tempcopy) {
331 to_fd = create_tempfile(to_name, tempfile,
332 sizeof(tempfile));
333 if (to_fd < 0)
334 err(EX_OSERR, "%s", tempfile);
335 } else {
336 if ((to_fd = create_newfile(to_name, target,
337 &to_sb)) < 0)
338 err(EX_OSERR, "%s", to_name);
339 if (verbose)
340 (void)printf("install: %s -> %s\n",
341 from_name, to_name);
342 }
343 if (!devnull)
344 copy(from_fd, from_name, to_fd,
345 tempcopy ? tempfile : to_name, from_sb.st_size);
346 }
347
348 if (dostrip) {
349 strip(tempcopy ? tempfile : to_name);
350
351 /*
352 * Re-open our fd on the target, in case we used a strip
353 * that does not work in-place -- like GNU binutils strip.
354 */
355 close(to_fd);
356 to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY, 0);
357 if (to_fd < 0)
358 err(EX_OSERR, "stripping %s", to_name);
359 }
360
361 /*
362 * Compare the stripped temp file with the target.
363 */
364 if (docompare && dostrip && target) {
365 temp_fd = to_fd;
366
367 /* Re-open to_fd using the real target name. */
368 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
369 err(EX_OSERR, "%s", to_name);
370
371 if (fstat(temp_fd, &temp_sb)) {
372 serrno = errno;
373 (void)unlink(tempfile);
374 errno = serrno;
375 err(EX_OSERR, "%s", tempfile);
376 }
377
378 if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd,
379 to_name, (size_t)to_sb.st_size) == 0) {
380 /*
381 * If target has more than one link we need to
382 * replace it in order to snap the extra links.
383 * Need to preserve target file times, though.
384 */
385 if (to_sb.st_nlink != 1) {
386 utb.actime = to_sb.st_atime;
387 utb.modtime = to_sb.st_mtime;
388 (void)utime(tempfile, &utb);
389 } else {
390 files_match = 1;
391 (void)unlink(tempfile);
392 }
393 (void) close(temp_fd);
394 }
395 }
396
397 /*
398 * Move the new file into place if doing a safe copy
399 * and the files are different (or just not compared).
400 */
401 if (tempcopy && !files_match) {
402 /* Try to turn off the immutable bits. */
403 if (to_sb.st_flags & NOCHANGEBITS)
404 (void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS);
405 if (dobackup) {
406 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name,
407 suffix) != strlen(to_name) + strlen(suffix)) {
408 unlink(tempfile);
409 errx(EX_OSERR, "%s: backup filename too long",
410 to_name);
411 }
412 if (verbose)
413 (void)printf("install: %s -> %s\n", to_name, backup);
414 if (rename(to_name, backup) < 0) {
415 serrno = errno;
416 unlink(tempfile);
417 errno = serrno;
418 err(EX_OSERR, "rename: %s to %s", to_name,
419 backup);
420 }
421 }
422 if (verbose)
423 (void)printf("install: %s -> %s\n", from_name, to_name);
424 if (rename(tempfile, to_name) < 0) {
425 serrno = errno;
426 unlink(tempfile);
427 errno = serrno;
428 err(EX_OSERR, "rename: %s to %s",
429 tempfile, to_name);
430 }
431
432 /* Re-open to_fd so we aren't hosed by the rename(2). */
433 (void) close(to_fd);
434 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
435 err(EX_OSERR, "%s", to_name);
436 }
437
438 /*
439 * Preserve the timestamp of the source file if necessary.
440 */
441 if (dopreserve && !files_match && !devnull) {
442 utb.actime = from_sb.st_atime;
443 utb.modtime = from_sb.st_mtime;
444 (void)utime(to_name, &utb);
445 }
446
447 if (fstat(to_fd, &to_sb) == -1) {
448 serrno = errno;
449 (void)unlink(to_name);
450 errno = serrno;
451 err(EX_OSERR, "%s", to_name);
452 }
453
454 /*
455 * Set owner, group, mode for target; do the chown first,
456 * chown may lose the setuid bits.
457 */
458 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) ||
459 (uid != (uid_t)-1 && uid != to_sb.st_uid) ||
460 (mode != to_sb.st_mode)) {
461 /* Try to turn off the immutable bits. */
462 if (to_sb.st_flags & NOCHANGEBITS)
463 (void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS);
464 }
465
466 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) ||
467 (uid != (uid_t)-1 && uid != to_sb.st_uid))
468 if (fchown(to_fd, uid, gid) == -1) {
469 serrno = errno;
470 (void)unlink(to_name);
471 errno = serrno;
472 err(EX_OSERR,"%s: chown/chgrp", to_name);
473 }
474
475 if (mode != to_sb.st_mode)
476 if (fchmod(to_fd, mode)) {
477 serrno = errno;
478 (void)unlink(to_name);
479 errno = serrno;
480 err(EX_OSERR, "%s: chmod", to_name);
481 }
482
483 /*
484 * If provided a set of flags, set them, otherwise, preserve the
485 * flags, except for the dump flag.
486 * NFS does not support flags. Ignore EOPNOTSUPP flags if we're just
487 * trying to turn off UF_NODUMP. If we're trying to set real flags,
488 * then warn if the the fs doesn't support it, otherwise fail.
489 */
490 if (!devnull && fchflags(to_fd,
491 flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) {
492 if (flags & SETFLAGS) {
493 if (errno == EOPNOTSUPP)
494 warn("%s: chflags", to_name);
495 else {
496 serrno = errno;
497 (void)unlink(to_name);
498 errno = serrno;
499 err(EX_OSERR, "%s: chflags", to_name);
500 }
501 }
502 }
503
504 (void)close(to_fd);
505 if (!devnull)
506 (void)close(from_fd);
507}
508
509/*
510 * compare --
511 * compare two files; non-zero means files differ
512 */
513int
514compare(int from_fd, const char *from_name __unused, size_t from_len,
515 int to_fd, const char *to_name __unused, size_t to_len)
516{
517 char *p, *q;
518 int rv;
519 int done_compare;
520
521 rv = 0;
522 if (from_len != to_len)
523 return 1;
524
525 if (from_len <= MAX_CMP_SIZE) {
526 done_compare = 0;
527 if (trymmap(from_fd) && trymmap(to_fd)) {
528 p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, from_fd, (off_t)0);
529 if (p == (char *)MAP_FAILED)
530 goto out;
531 q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, to_fd, (off_t)0);
532 if (q == (char *)MAP_FAILED) {
533 munmap(p, from_len);
534 goto out;
535 }
536
537 rv = memcmp(p, q, from_len);
538 munmap(p, from_len);
539 munmap(q, from_len);
540 done_compare = 1;
541 }
542 out:
543 if (!done_compare) {
544 char buf1[MAXBSIZE];
545 char buf2[MAXBSIZE];
546 int n1, n2;
547
548 rv = 0;
549 lseek(from_fd, 0, SEEK_SET);
550 lseek(to_fd, 0, SEEK_SET);
551 while (rv == 0) {
552 n1 = read(from_fd, buf1, sizeof(buf1));
553 if (n1 == 0)
554 break; /* EOF */
555 else if (n1 > 0) {
556 n2 = read(to_fd, buf2, n1);
557 if (n2 == n1)
558 rv = memcmp(buf1, buf2, n1);
559 else
560 rv = 1; /* out of sync */
561 } else
562 rv = 1; /* read failure */
563 }
564 lseek(from_fd, 0, SEEK_SET);
565 lseek(to_fd, 0, SEEK_SET);
566 }
567 } else
568 rv = 1; /* don't bother in this case */
569
570 return rv;
571}
572
573/*
574 * create_tempfile --
575 * create a temporary file based on path and open it
576 */
577int
578create_tempfile(path, temp, tsize)
579 const char *path;
580 char *temp;
581 size_t tsize;
582{
583 char *p;
584
585 (void)strncpy(temp, path, tsize);
586 temp[tsize - 1] = '\0';
587 if ((p = strrchr(temp, '/')) != NULL)
588 p++;
589 else
590 p = temp;
591 (void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p);
592 temp[tsize - 1] = '\0';
593 return (mkstemp(temp));
594}
595
596/*
597 * create_newfile --
598 * create a new file, overwriting an existing one if necessary
599 */
600int
601create_newfile(path, target, sbp)
602 const char *path;
603 int target;
604 struct stat *sbp;
605{
606 char backup[MAXPATHLEN];
607
608 if (target) {
609 /*
610 * Unlink now... avoid ETXTBSY errors later. Try to turn
611 * off the append/immutable bits -- if we fail, go ahead,
612 * it might work.
613 */
614 if (sbp->st_flags & NOCHANGEBITS)
615 (void)chflags(path, sbp->st_flags & ~NOCHANGEBITS);
616
617 if (dobackup) {
618 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s",
619 path, suffix) != strlen(path) + strlen(suffix))
620 errx(EX_OSERR, "%s: backup filename too long",
621 path);
622 (void)snprintf(backup, MAXPATHLEN, "%s%s",
623 path, suffix);
624 if (verbose)
625 (void)printf("install: %s -> %s\n",
626 path, backup);
627 if (rename(path, backup) < 0)
628 err(EX_OSERR, "rename: %s to %s", path, backup);
629 } else
630 (void)unlink(path);
631 }
632
633 return (open(path, O_CREAT | O_RDWR | O_TRUNC, S_IRUSR | S_IWUSR));
634}
635
636/*
637 * copy --
638 * copy from one file to another
639 */
640void
641copy(from_fd, from_name, to_fd, to_name, size)
642 register int from_fd, to_fd;
643 const char *from_name, *to_name;
644 off_t size;
645{
646 register int nr, nw;
647 int serrno;
648 char *p, buf[MAXBSIZE];
649 int done_copy;
650
651 /* Rewind file descriptors. */
652 if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1)
653 err(EX_OSERR, "lseek: %s", from_name);
654 if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1)
655 err(EX_OSERR, "lseek: %s", to_name);
656
657 /*
658 * Mmap and write if less than 8M (the limit is so we don't totally
659 * trash memory on big files. This is really a minor hack, but it
660 * wins some CPU back.
661 */
662 done_copy = 0;
663 if (size <= 8 * 1048576 && trymmap(from_fd) &&
664 (p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED,
665 from_fd, (off_t)0)) != (char *)MAP_FAILED) {
666 if ((nw = write(to_fd, p, size)) != size) {
667 serrno = errno;
668 (void)unlink(to_name);
669 errno = nw > 0 ? EIO : serrno;
670 err(EX_OSERR, "%s", to_name);
671 }
672 done_copy = 1;
673 }
674 if (!done_copy) {
675 while ((nr = read(from_fd, buf, sizeof(buf))) > 0)
676 if ((nw = write(to_fd, buf, nr)) != nr) {
677 serrno = errno;
678 (void)unlink(to_name);
679 errno = nw > 0 ? EIO : serrno;
680 err(EX_OSERR, "%s", to_name);
681 }
682 if (nr != 0) {
683 serrno = errno;
684 (void)unlink(to_name);
685 errno = serrno;
686 err(EX_OSERR, "%s", from_name);
687 }
688 }
689}
690
691/*
692 * strip --
693 * use strip(1) to strip the target file
694 */
695void
696strip(to_name)
697 const char *to_name;
698{
699 const char *stripbin;
700 int serrno, status;
701
702 switch (fork()) {
703 case -1:
704 serrno = errno;
705 (void)unlink(to_name);
706 errno = serrno;
707 err(EX_TEMPFAIL, "fork");
708 case 0:
709 stripbin = getenv("STRIPBIN");
710 if (stripbin == NULL)
711 stripbin = "strip";
712 execlp(stripbin, stripbin, to_name, (char *)NULL);
713 err(EX_OSERR, "exec(%s)", stripbin);
714 default:
715 if (wait(&status) == -1 || status) {
716 serrno = errno;
717 (void)unlink(to_name);
718 errc(EX_SOFTWARE, serrno, "wait");
719 /* NOTREACHED */
720 }
721 }
722}
723
724/*
725 * install_dir --
726 * build directory heirarchy
727 */
728void
729install_dir(path)
730 char *path;
731{
732 register char *p;
733 struct stat sb;
734 int ch;
735
736 for (p = path;; ++p)
737 if (!*p || (p != path && *p == '/')) {
738 ch = *p;
739 *p = '\0';
740 if (stat(path, &sb)) {
741 if (errno != ENOENT || mkdir(path, 0755) < 0) {
742 err(EX_OSERR, "mkdir %s", path);
743 /* NOTREACHED */
744 } else if (verbose)
745 (void)printf("install: mkdir %s\n",
746 path);
747 } else if (!S_ISDIR(sb.st_mode))
748 errx(EX_OSERR, "%s exists but is not a directory", path);
749 if (!(*p = ch))
750 break;
751 }
752
753 if ((gid != (gid_t)-1 || uid != (uid_t)-1) && chown(path, uid, gid))
754 warn("chown %u:%u %s", uid, gid, path);
755 if (chmod(path, mode))
756 warn("chmod %o %s", mode, path);
757}
758
759/*
760 * usage --
761 * print a usage message and die
762 */
763void
764usage()
765{
766 (void)fprintf(stderr, "\
767usage: install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n\
768 [-o owner] file1 file2\n\
769 install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n\
770 [-o owner] file1 ... fileN directory\n\
771 install -d [-v] [-g group] [-m mode] [-o owner] directory ...\n");
772 exit(EX_USAGE);
773 /* NOTREACHED */
774}
775
776/*
777 * trymmap --
778 * return true (1) if mmap should be tried, false (0) if not.
779 */
780int
781trymmap(fd)
782 int fd;
783{
784/*
785 * The ifdef is for bootstrapping - f_fstypename doesn't exist in
786 * pre-Lite2-merge systems.
787 */
788#ifdef MFSNAMELEN
789 struct statfs stfs;
790
791 if (nommap || fstatfs(fd, &stfs) != 0)
792 return (0);
793 if (strcmp(stfs.f_fstypename, "ufs") == 0 ||
794 strcmp(stfs.f_fstypename, "cd9660") == 0)
795 return (1);
796#endif
797 return (0);
798}