install.c@ 367

Last change on this file since 367 was 367, checked in by bird, 19 years ago
Unmodified FreeBSD 6.x versions.
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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.
32	*/
33
34	#ifndef lint
35	static 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
42	static 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 1.66 2005/01/25 14:34:57 ssouhlal 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/time.h>
54	#include <sys/wait.h>
55
56	#include <ctype.h>
57	#include <err.h>
58	#include <errno.h>
59	#include <fcntl.h>
60	#include <grp.h>
61	#include <paths.h>
62	#include <pwd.h>
63	#include <stdio.h>
64	#include <stdlib.h>
65	#include <string.h>
66	#include <sysexits.h>
67	#include <unistd.h>
68
69	/* Bootstrap aid - this doesn't exist in most older releases */
70	#ifndef MAP_FAILED
71	#define MAP_FAILED ((void )-1) / from <sys/mman.h> */
72	#endif
73
74	#define MAX_CMP_SIZE (16 * 1024 * 1024)
75
76	#define DIRECTORY 0x01 /* Tell install it's a directory. */
77	#define SETFLAGS 0x02 /* Tell install to set flags. */
78	#define NOCHANGEBITS (UF_IMMUTABLE \| UF_APPEND \| SF_IMMUTABLE \| SF_APPEND)
79	#define BACKUP_SUFFIX ".old"
80
81	struct passwd *pp;
82	struct group *gp;
83	gid_t gid;
84	uid_t uid;
85	int dobackup, docompare, dodir, dopreserve, dostrip, nommap, safecopy, verbose;
86	mode_t mode = S_IRWXU \| S_IRGRP \| S_IXGRP \| S_IROTH \| S_IXOTH;
87	const char *suffix = BACKUP_SUFFIX;
88
89	void copy(int, const char , int, const char , off_t);
90	int compare(int, const char , size_t, int, const char , size_t);
91	int create_newfile(const char , int, struct stat );
92	int create_tempfile(const char , char , size_t);
93	void install(const char , const char , u_long, u_int);
94	void install_dir(char *);
95	u_long numeric_id(const char , const char );
96	void strip(const char *);
97	int trymmap(int);
98	void usage(void);
99
100	int
101	main(int argc, char *argv[])
102	{
103	struct stat from_sb, to_sb;
104	mode_t *set;
105	u_long fset;
106	int ch, no_target;
107	u_int iflags;
108	char *flags;
109	const char group, owner, *to_name;
110
111	iflags = 0;
112	group = owner = NULL;
113	while ((ch = getopt(argc, argv, "B:bCcdf:g:Mm:o:pSsv")) != -1)
114	switch((char)ch) {
115	case 'B':
116	suffix = optarg;
117	/* FALLTHROUGH */
118	case 'b':
119	dobackup = 1;
120	break;
121	case 'C':
122	docompare = 1;
123	break;
124	case 'c':
125	/* For backwards compatibility. */
126	break;
127	case 'd':
128	dodir = 1;
129	break;
130	case 'f':
131	flags = optarg;
132	if (strtofflags(&flags, &fset, NULL))
133	errx(EX_USAGE, "%s: invalid flag", flags);
134	iflags \|= SETFLAGS;
135	break;
136	case 'g':
137	group = optarg;
138	break;
139	case 'M':
140	nommap = 1;
141	break;
142	case 'm':
143	if (!(set = setmode(optarg)))
144	errx(EX_USAGE, "invalid file mode: %s",
145	optarg);
146	mode = getmode(set, 0);
147	free(set);
148	break;
149	case 'o':
150	owner = optarg;
151	break;
152	case 'p':
153	docompare = dopreserve = 1;
154	break;
155	case 'S':
156	safecopy = 1;
157	break;
158	case 's':
159	dostrip = 1;
160	break;
161	case 'v':
162	verbose = 1;
163	break;
164	case '?':
165	default:
166	usage();
167	}
168	argc -= optind;
169	argv += optind;
170
171	/* some options make no sense when creating directories */
172	if (dostrip && dodir) {
173	warnx("-d and -s may not be specified together");
174	usage();
175	}
176
177	/* must have at least two arguments, except when creating directories */
178	if (argc == 0 \|\| (argc == 1 && !dodir))
179	usage();
180
181	/* need to make a temp copy so we can compare stripped version */
182	if (docompare && dostrip)
183	safecopy = 1;
184
185	/* get group and owner id's */
186	if (group != NULL) {
187	if ((gp = getgrnam(group)) != NULL)
188	gid = gp->gr_gid;
189	else
190	gid = (gid_t)numeric_id(group, "group");
191	} else
192	gid = (gid_t)-1;
193
194	if (owner != NULL) {
195	if ((pp = getpwnam(owner)) != NULL)
196	uid = pp->pw_uid;
197	else
198	uid = (uid_t)numeric_id(owner, "user");
199	} else
200	uid = (uid_t)-1;
201
202	if (dodir) {
203	for (; *argv != NULL; ++argv)
204	install_dir(*argv);
205	exit(EX_OK);
206	/* NOTREACHED */
207	}
208
209	no_target = stat(to_name = argv[argc - 1], &to_sb);
210	if (!no_target && S_ISDIR(to_sb.st_mode)) {
211	for (; *argv != to_name; ++argv)
212	install(*argv, to_name, fset, iflags \| DIRECTORY);
213	exit(EX_OK);
214	/* NOTREACHED */
215	}
216
217	/* can't do file1 file2 directory/file */
218	if (argc != 2) {
219	warnx("wrong number or types of arguments");
220	usage();
221	}
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
240	u_long
241	numeric_id(const char name, const char type)
242	{
243	u_long val;
244	char *ep;
245
246	/*
247	* XXX
248	* We know that uid_t's and gid_t's are unsigned longs.
249	*/
250	errno = 0;
251	val = strtoul(name, &ep, 10);
252	if (errno)
253	err(EX_NOUSER, "%s", name);
254	if (*ep != '\0')
255	errx(EX_NOUSER, "unknown %s %s", type, name);
256	return (val);
257	}
258
259	/*
260	* install --
261	* build a path name and install the file
262	*/
263	void
264	install(const char from_name, const char to_name, u_long fset, u_int flags)
265	{
266	struct stat from_sb, temp_sb, to_sb;
267	struct timeval tvb[2];
268	int devnull, files_match, from_fd, serrno, target;
269	int tempcopy, temp_fd, to_fd;
270	char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN];
271
272	files_match = 0;
273	from_fd = -1;
274	to_fd = -1;
275
276	/* If try to install NULL file to a directory, fails. */
277	if (flags & DIRECTORY \|\| strcmp(from_name, _PATH_DEVNULL)) {
278	if (stat(from_name, &from_sb))
279	err(EX_OSERR, "%s", from_name);
280	if (!S_ISREG(from_sb.st_mode)) {
281	errno = EFTYPE;
282	err(EX_OSERR, "%s", from_name);
283	}
284	/* Build the target path. */
285	if (flags & DIRECTORY) {
286	(void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s",
287	to_name,
288	(p = strrchr(from_name, '/')) ? ++p : from_name);
289	to_name = pathbuf;
290	}
291	devnull = 0;
292	} else {
293	devnull = 1;
294	}
295
296	target = stat(to_name, &to_sb) == 0;
297
298	/* Only install to regular files. */
299	if (target && !S_ISREG(to_sb.st_mode)) {
300	errno = EFTYPE;
301	warn("%s", to_name);
302	return;
303	}
304
305	/* Only copy safe if the target exists. */
306	tempcopy = safecopy && target;
307
308	if (!devnull && (from_fd = open(from_name, O_RDONLY, 0)) < 0)
309	err(EX_OSERR, "%s", from_name);
310
311	/* If we don't strip, we can compare first. */
312	if (docompare && !dostrip && target) {
313	if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
314	err(EX_OSERR, "%s", to_name);
315	if (devnull)
316	files_match = to_sb.st_size == 0;
317	else
318	files_match = !(compare(from_fd, from_name,
319	(size_t)from_sb.st_size, to_fd,
320	to_name, (size_t)to_sb.st_size));
321
322	/* Close "to" file unless we match. */
323	if (!files_match)
324	(void)close(to_fd);
325	}
326
327	if (!files_match) {
328	if (tempcopy) {
329	to_fd = create_tempfile(to_name, tempfile,
330	sizeof(tempfile));
331	if (to_fd < 0)
332	err(EX_OSERR, "%s", tempfile);
333	} else {
334	if ((to_fd = create_newfile(to_name, target,
335	&to_sb)) < 0)
336	err(EX_OSERR, "%s", to_name);
337	if (verbose)
338	(void)printf("install: %s -> %s\n",
339	from_name, to_name);
340	}
341	if (!devnull)
342	copy(from_fd, from_name, to_fd,
343	tempcopy ? tempfile : to_name, from_sb.st_size);
344	}
345
346	if (dostrip) {
347	strip(tempcopy ? tempfile : to_name);
348
349	/*
350	* Re-open our fd on the target, in case we used a strip
351	* that does not work in-place -- like GNU binutils strip.
352	*/
353	close(to_fd);
354	to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY, 0);
355	if (to_fd < 0)
356	err(EX_OSERR, "stripping %s", to_name);
357	}
358
359	/*
360	* Compare the stripped temp file with the target.
361	*/
362	if (docompare && dostrip && target) {
363	temp_fd = to_fd;
364
365	/* Re-open to_fd using the real target name. */
366	if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
367	err(EX_OSERR, "%s", to_name);
368
369	if (fstat(temp_fd, &temp_sb)) {
370	serrno = errno;
371	(void)unlink(tempfile);
372	errno = serrno;
373	err(EX_OSERR, "%s", tempfile);
374	}
375
376	if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd,
377	to_name, (size_t)to_sb.st_size) == 0) {
378	/*
379	* If target has more than one link we need to
380	* replace it in order to snap the extra links.
381	* Need to preserve target file times, though.
382	*/
383	if (to_sb.st_nlink != 1) {
384	tvb[0].tv_sec = to_sb.st_atime;
385	tvb[0].tv_usec = 0;
386	tvb[1].tv_sec = to_sb.st_mtime;
387	tvb[1].tv_usec = 0;
388	(void)utimes(tempfile, tvb);
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	tvb[0].tv_sec = from_sb.st_atime;
443	tvb[0].tv_usec = 0;
444	tvb[1].tv_sec = from_sb.st_mtime;
445	tvb[1].tv_usec = 0;
446	(void)utimes(to_name, tvb);
447	}
448
449	if (fstat(to_fd, &to_sb) == -1) {
450	serrno = errno;
451	(void)unlink(to_name);
452	errno = serrno;
453	err(EX_OSERR, "%s", to_name);
454	}
455
456	/*
457	* Set owner, group, mode for target; do the chown first,
458	* chown may lose the setuid bits.
459	*/
460	if ((gid != (gid_t)-1 && gid != to_sb.st_gid) \|\|
461	(uid != (uid_t)-1 && uid != to_sb.st_uid) \|\|
462	(mode != (to_sb.st_mode & ALLPERMS))) {
463	/* Try to turn off the immutable bits. */
464	if (to_sb.st_flags & NOCHANGEBITS)
465	(void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS);
466	}
467
468	if ((gid != (gid_t)-1 && gid != to_sb.st_gid) \|\|
469	(uid != (uid_t)-1 && uid != to_sb.st_uid))
470	if (fchown(to_fd, uid, gid) == -1) {
471	serrno = errno;
472	(void)unlink(to_name);
473	errno = serrno;
474	err(EX_OSERR,"%s: chown/chgrp", to_name);
475	}
476
477	if (mode != (to_sb.st_mode & ALLPERMS))
478	if (fchmod(to_fd, mode)) {
479	serrno = errno;
480	(void)unlink(to_name);
481	errno = serrno;
482	err(EX_OSERR, "%s: chmod", to_name);
483	}
484
485	/*
486	* If provided a set of flags, set them, otherwise, preserve the
487	* flags, except for the dump flag.
488	* NFS does not support flags. Ignore EOPNOTSUPP flags if we're just
489	* trying to turn off UF_NODUMP. If we're trying to set real flags,
490	* then warn if the the fs doesn't support it, otherwise fail.
491	*/
492	if (!devnull && (flags & SETFLAGS \|\|
493	(from_sb.st_flags & ~UF_NODUMP) != to_sb.st_flags) &&
494	fchflags(to_fd,
495	flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) {
496	if (flags & SETFLAGS) {
497	if (errno == EOPNOTSUPP)
498	warn("%s: chflags", to_name);
499	else {
500	serrno = errno;
501	(void)unlink(to_name);
502	errno = serrno;
503	err(EX_OSERR, "%s: chflags", to_name);
504	}
505	}
506	}
507
508	(void)close(to_fd);
509	if (!devnull)
510	(void)close(from_fd);
511	}
512
513	/*
514	* compare --
515	* compare two files; non-zero means files differ
516	*/
517	int
518	compare(int from_fd, const char *from_name __unused, size_t from_len,
519	int to_fd, const char *to_name __unused, size_t to_len)
520	{
521	char p, q;
522	int rv;
523	int done_compare;
524
525	rv = 0;
526	if (from_len != to_len)
527	return 1;
528
529	if (from_len <= MAX_CMP_SIZE) {
530	done_compare = 0;
531	if (trymmap(from_fd) && trymmap(to_fd)) {
532	p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, from_fd, (off_t)0);
533	if (p == (char *)MAP_FAILED)
534	goto out;
535	q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, to_fd, (off_t)0);
536	if (q == (char *)MAP_FAILED) {
537	munmap(p, from_len);
538	goto out;
539	}
540
541	rv = memcmp(p, q, from_len);
542	munmap(p, from_len);
543	munmap(q, from_len);
544	done_compare = 1;
545	}
546	out:
547	if (!done_compare) {
548	char buf1[MAXBSIZE];
549	char buf2[MAXBSIZE];
550	int n1, n2;
551
552	rv = 0;
553	lseek(from_fd, 0, SEEK_SET);
554	lseek(to_fd, 0, SEEK_SET);
555	while (rv == 0) {
556	n1 = read(from_fd, buf1, sizeof(buf1));
557	if (n1 == 0)
558	break; /* EOF */
559	else if (n1 > 0) {
560	n2 = read(to_fd, buf2, n1);
561	if (n2 == n1)
562	rv = memcmp(buf1, buf2, n1);
563	else
564	rv = 1; /* out of sync */
565	} else
566	rv = 1; /* read failure */
567	}
568	lseek(from_fd, 0, SEEK_SET);
569	lseek(to_fd, 0, SEEK_SET);
570	}
571	} else
572	rv = 1; /* don't bother in this case */
573
574	return rv;
575	}
576
577	/*
578	* create_tempfile --
579	* create a temporary file based on path and open it
580	*/
581	int
582	create_tempfile(const char path, char temp, size_t tsize)
583	{
584	char *p;
585
586	(void)strncpy(temp, path, tsize);
587	temp[tsize - 1] = '\0';
588	if ((p = strrchr(temp, '/')) != NULL)
589	p++;
590	else
591	p = temp;
592	(void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p);
593	temp[tsize - 1] = '\0';
594	return (mkstemp(temp));
595	}
596
597	/*
598	* create_newfile --
599	* create a new file, overwriting an existing one if necessary
600	*/
601	int
602	create_newfile(const char path, int target, struct stat sbp)
603	{
604	char backup[MAXPATHLEN];
605	int saved_errno = 0;
606	int newfd;
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	if (unlink(path) < 0)
631	saved_errno = errno;
632	}
633
634	newfd = open(path, O_CREAT \| O_RDWR \| O_TRUNC, S_IRUSR \| S_IWUSR);
635	if (newfd < 0 && saved_errno != 0)
636	errno = saved_errno;
637	return newfd;
638	}
639
640	/*
641	* copy --
642	* copy from one file to another
643	*/
644	void
645	copy(int from_fd, const char from_name, int to_fd, const char to_name,
646	off_t size)
647	{
648	int nr, nw;
649	int serrno;
650	char *p, buf[MAXBSIZE];
651	int done_copy;
652
653	/* Rewind file descriptors. */
654	if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1)
655	err(EX_OSERR, "lseek: %s", from_name);
656	if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1)
657	err(EX_OSERR, "lseek: %s", to_name);
658
659	/*
660	* Mmap and write if less than 8M (the limit is so we don't totally
661	* trash memory on big files. This is really a minor hack, but it
662	* wins some CPU back.
663	*/
664	done_copy = 0;
665	if (size <= 8 * 1048576 && trymmap(from_fd) &&
666	(p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED,
667	from_fd, (off_t)0)) != (char *)MAP_FAILED) {
668	if ((nw = write(to_fd, p, size)) != size) {
669	serrno = errno;
670	(void)unlink(to_name);
671	errno = nw > 0 ? EIO : serrno;
672	err(EX_OSERR, "%s", to_name);
673	}
674	done_copy = 1;
675	}
676	if (!done_copy) {
677	while ((nr = read(from_fd, buf, sizeof(buf))) > 0)
678	if ((nw = write(to_fd, buf, nr)) != nr) {
679	serrno = errno;
680	(void)unlink(to_name);
681	errno = nw > 0 ? EIO : serrno;
682	err(EX_OSERR, "%s", to_name);
683	}
684	if (nr != 0) {
685	serrno = errno;
686	(void)unlink(to_name);
687	errno = serrno;
688	err(EX_OSERR, "%s", from_name);
689	}
690	}
691	}
692
693	/*
694	* strip --
695	* use strip(1) to strip the target file
696	*/
697	void
698	strip(const char *to_name)
699	{
700	const char *stripbin;
701	int serrno, status;
702
703	switch (fork()) {
704	case -1:
705	serrno = errno;
706	(void)unlink(to_name);
707	errno = serrno;
708	err(EX_TEMPFAIL, "fork");
709	case 0:
710	stripbin = getenv("STRIPBIN");
711	if (stripbin == NULL)
712	stripbin = "strip";
713	execlp(stripbin, stripbin, to_name, (char *)NULL);
714	err(EX_OSERR, "exec(%s)", stripbin);
715	default:
716	if (wait(&status) == -1 \|\| status) {
717	serrno = errno;
718	(void)unlink(to_name);
719	errc(EX_SOFTWARE, serrno, "wait");
720	/* NOTREACHED */
721	}
722	}
723	}
724
725	/*
726	* install_dir --
727	* build directory heirarchy
728	*/
729	void
730	install_dir(char *path)
731	{
732	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	*/
763	void
764	usage()
765	{
766	(void)fprintf(stderr,
767	"usage: 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	*/
780	int
781	trymmap(int fd)
782	{
783	/*
784	* The ifdef is for bootstrapping - f_fstypename doesn't exist in
785	* pre-Lite2-merge systems.
786	*/
787	#ifdef MFSNAMELEN
788	struct statfs stfs;
789
790	if (nommap \|\| fstatfs(fd, &stfs) != 0)
791	return (0);
792	if (strcmp(stfs.f_fstypename, "ufs") == 0 \|\|
793	strcmp(stfs.f_fstypename, "cd9660") == 0)
794	return (1);
795	#endif
796	return (0);
797	}

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source: kBuild/trunk/src/gmake/kmkbuiltin/install.c@ 367

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