install.c@ 368

Last change on this file since 368 was 368, checked in by bird, 19 years ago
ln and install builtins (from BSD as usual).
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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	#ifndef O_BINARY
82	# define O_BINARY 0
83	#endif
84
85	static struct passwd *pp;
86	static struct group *gp;
87	static gid_t gid;
88	static uid_t uid;
89	static int dobackup, docompare, dodir, dopreserve, dostrip, nommap, safecopy, verbose;
90	static mode_t mode = S_IRWXU \| S_IRGRP \| S_IXGRP \| S_IROTH \| S_IXOTH;
91	static const char *suffix = BACKUP_SUFFIX;
92
93	static void copy(int, const char , int, const char , off_t);
94	static int compare(int, const char , size_t, int, const char , size_t);
95	static int create_newfile(const char , int, struct stat );
96	static int create_tempfile(const char , char , size_t);
97	static void install(const char , const char , u_long, u_int);
98	static void install_dir(char *);
99	static u_long numeric_id(const char , const char );
100	static void strip(const char *);
101	static int trymmap(int);
102	static void usage(void);
103
104	int
105	kmk_builtin_install(int argc, 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	#ifdef UF_IMMUTABLE
136	flags = optarg;
137	if (strtofflags(&flags, &fset, NULL))
138	errx(EX_USAGE, "%s: invalid flag", flags);
139	iflags \|= SETFLAGS;
140	#endif
141	break;
142	case 'g':
143	group = optarg;
144	break;
145	case 'M':
146	nommap = 1;
147	break;
148	case 'm':
149	#ifdef __EMX__
150	if (!(set = bsd_setmode(optarg)))
151	#else
152	if (!(set = setmode(optarg)))
153	#endif
154	errx(EX_USAGE, "invalid file mode: %s",
155	optarg);
156	mode = getmode(set, 0);
157	free(set);
158	break;
159	case 'o':
160	owner = optarg;
161	break;
162	case 'p':
163	docompare = dopreserve = 1;
164	break;
165	case 'S':
166	safecopy = 1;
167	break;
168	case 's':
169	dostrip = 1;
170	break;
171	case 'v':
172	verbose = 1;
173	break;
174	case '?':
175	default:
176	usage();
177	}
178	argc -= optind;
179	argv += optind;
180
181	/* some options make no sense when creating directories */
182	if (dostrip && dodir) {
183	warnx("-d and -s may not be specified together");
184	usage();
185	}
186
187	/* must have at least two arguments, except when creating directories */
188	if (argc == 0 \|\| (argc == 1 && !dodir))
189	usage();
190
191	/* need to make a temp copy so we can compare stripped version */
192	if (docompare && dostrip)
193	safecopy = 1;
194
195	/* get group and owner id's */
196	if (group != NULL) {
197	if ((gp = getgrnam(group)) != NULL)
198	gid = gp->gr_gid;
199	else
200	gid = (gid_t)numeric_id(group, "group");
201	} else
202	gid = (gid_t)-1;
203
204	if (owner != NULL) {
205	if ((pp = getpwnam(owner)) != NULL)
206	uid = pp->pw_uid;
207	else
208	uid = (uid_t)numeric_id(owner, "user");
209	} else
210	uid = (uid_t)-1;
211
212	if (dodir) {
213	for (; *argv != NULL; ++argv)
214	install_dir(*argv);
215	exit(EX_OK);
216	/* NOTREACHED */
217	}
218
219	no_target = stat(to_name = argv[argc - 1], &to_sb);
220	if (!no_target && S_ISDIR(to_sb.st_mode)) {
221	for (; *argv != to_name; ++argv)
222	install(*argv, to_name, fset, iflags \| DIRECTORY);
223	exit(EX_OK);
224	/* NOTREACHED */
225	}
226
227	/* can't do file1 file2 directory/file */
228	if (argc != 2) {
229	warnx("wrong number or types of arguments");
230	usage();
231	}
232
233	if (!no_target) {
234	if (stat(*argv, &from_sb))
235	err(EX_OSERR, "%s", *argv);
236	if (!S_ISREG(to_sb.st_mode)) {
237	errno = EFTYPE;
238	err(EX_OSERR, "%s", to_name);
239	}
240	if (to_sb.st_dev == from_sb.st_dev &&
241	to_sb.st_ino == from_sb.st_ino)
242	errx(EX_USAGE,
243	"%s and %s are the same file", *argv, to_name);
244	}
245	install(*argv, to_name, fset, iflags);
246	exit(EX_OK);
247	/* NOTREACHED */
248	}
249
250	u_long
251	numeric_id(const char name, const char type)
252	{
253	u_long val;
254	char *ep;
255
256	/*
257	* XXX
258	* We know that uid_t's and gid_t's are unsigned longs.
259	*/
260	errno = 0;
261	val = strtoul(name, &ep, 10);
262	if (errno)
263	err(EX_NOUSER, "%s", name);
264	if (*ep != '\0')
265	errx(EX_NOUSER, "unknown %s %s", type, name);
266	return (val);
267	}
268
269	/*
270	* install --
271	* build a path name and install the file
272	*/
273	void
274	install(const char from_name, const char to_name, u_long fset, u_int flags)
275	{
276	struct stat from_sb, temp_sb, to_sb;
277	struct timeval tvb[2];
278	int devnull, files_match, from_fd, serrno, target;
279	int tempcopy, temp_fd, to_fd;
280	char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN];
281
282	files_match = 0;
283	from_fd = -1;
284	to_fd = -1;
285
286	/* If try to install NULL file to a directory, fails. */
287	if (flags & DIRECTORY \|\| strcmp(from_name, _PATH_DEVNULL)) {
288	if (stat(from_name, &from_sb))
289	err(EX_OSERR, "%s", from_name);
290	if (!S_ISREG(from_sb.st_mode)) {
291	errno = EFTYPE;
292	err(EX_OSERR, "%s", from_name);
293	}
294	/* Build the target path. */
295	if (flags & DIRECTORY) {
296	(void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s",
297	to_name,
298	(p = strrchr(from_name, '/')) ? ++p : from_name);
299	to_name = pathbuf;
300	}
301	devnull = 0;
302	} else {
303	devnull = 1;
304	}
305
306	target = stat(to_name, &to_sb) == 0;
307
308	/* Only install to regular files. */
309	if (target && !S_ISREG(to_sb.st_mode)) {
310	errno = EFTYPE;
311	warn("%s", to_name);
312	return;
313	}
314
315	/* Only copy safe if the target exists. */
316	tempcopy = safecopy && target;
317
318	if (!devnull && (from_fd = open(from_name, O_RDONLY \| O_BINARY, 0)) < 0)
319	err(EX_OSERR, "%s", from_name);
320
321	/* If we don't strip, we can compare first. */
322	if (docompare && !dostrip && target) {
323	if ((to_fd = open(to_name, O_RDONLY \| O_BINARY, 0)) < 0)
324	err(EX_OSERR, "%s", to_name);
325	if (devnull)
326	files_match = to_sb.st_size == 0;
327	else
328	files_match = !(compare(from_fd, from_name,
329	(size_t)from_sb.st_size, to_fd,
330	to_name, (size_t)to_sb.st_size));
331
332	/* Close "to" file unless we match. */
333	if (!files_match)
334	(void)close(to_fd);
335	}
336
337	if (!files_match) {
338	if (tempcopy) {
339	to_fd = create_tempfile(to_name, tempfile,
340	sizeof(tempfile));
341	if (to_fd < 0)
342	err(EX_OSERR, "%s", tempfile);
343	} else {
344	if ((to_fd = create_newfile(to_name, target,
345	&to_sb)) < 0)
346	err(EX_OSERR, "%s", to_name);
347	if (verbose)
348	(void)printf("install: %s -> %s\n",
349	from_name, to_name);
350	}
351	if (!devnull)
352	copy(from_fd, from_name, to_fd,
353	tempcopy ? tempfile : to_name, from_sb.st_size);
354	}
355
356	if (dostrip) {
357	strip(tempcopy ? tempfile : to_name);
358
359	/*
360	* Re-open our fd on the target, in case we used a strip
361	* that does not work in-place -- like GNU binutils strip.
362	*/
363	close(to_fd);
364	to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY \| O_BINARY, 0);
365	if (to_fd < 0)
366	err(EX_OSERR, "stripping %s", to_name);
367	}
368
369	/*
370	* Compare the stripped temp file with the target.
371	*/
372	if (docompare && dostrip && target) {
373	temp_fd = to_fd;
374
375	/* Re-open to_fd using the real target name. */
376	if ((to_fd = open(to_name, O_RDONLY \| O_BINARY, 0)) < 0)
377	err(EX_OSERR, "%s", to_name);
378
379	if (fstat(temp_fd, &temp_sb)) {
380	serrno = errno;
381	(void)unlink(tempfile);
382	errno = serrno;
383	err(EX_OSERR, "%s", tempfile);
384	}
385
386	if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd,
387	to_name, (size_t)to_sb.st_size) == 0) {
388	/*
389	* If target has more than one link we need to
390	* replace it in order to snap the extra links.
391	* Need to preserve target file times, though.
392	*/
393	if (to_sb.st_nlink != 1) {
394	tvb[0].tv_sec = to_sb.st_atime;
395	tvb[0].tv_usec = 0;
396	tvb[1].tv_sec = to_sb.st_mtime;
397	tvb[1].tv_usec = 0;
398	(void)utimes(tempfile, tvb);
399	} else {
400	files_match = 1;
401	(void)unlink(tempfile);
402	}
403	(void) close(temp_fd);
404	}
405	}
406
407	/*
408	* Move the new file into place if doing a safe copy
409	* and the files are different (or just not compared).
410	*/
411	if (tempcopy && !files_match) {
412	#ifdef UF_IMMUTABLE
413	/* Try to turn off the immutable bits. */
414	if (to_sb.st_flags & NOCHANGEBITS)
415	(void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS);
416	#endif
417	if (dobackup) {
418	if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name,
419	suffix) != strlen(to_name) + strlen(suffix)) {
420	unlink(tempfile);
421	errx(EX_OSERR, "%s: backup filename too long",
422	to_name);
423	}
424	if (verbose)
425	(void)printf("install: %s -> %s\n", to_name, backup);
426	if (rename(to_name, backup) < 0) {
427	serrno = errno;
428	unlink(tempfile);
429	errno = serrno;
430	err(EX_OSERR, "rename: %s to %s", to_name,
431	backup);
432	}
433	}
434	if (verbose)
435	(void)printf("install: %s -> %s\n", from_name, to_name);
436	if (rename(tempfile, to_name) < 0) {
437	serrno = errno;
438	unlink(tempfile);
439	errno = serrno;
440	err(EX_OSERR, "rename: %s to %s",
441	tempfile, to_name);
442	}
443
444	/* Re-open to_fd so we aren't hosed by the rename(2). */
445	(void) close(to_fd);
446	if ((to_fd = open(to_name, O_RDONLY \| O_BINARY, 0)) < 0)
447	err(EX_OSERR, "%s", to_name);
448	}
449
450	/*
451	* Preserve the timestamp of the source file if necessary.
452	*/
453	if (dopreserve && !files_match && !devnull) {
454	tvb[0].tv_sec = from_sb.st_atime;
455	tvb[0].tv_usec = 0;
456	tvb[1].tv_sec = from_sb.st_mtime;
457	tvb[1].tv_usec = 0;
458	(void)utimes(to_name, tvb);
459	}
460
461	if (fstat(to_fd, &to_sb) == -1) {
462	serrno = errno;
463	(void)unlink(to_name);
464	errno = serrno;
465	err(EX_OSERR, "%s", to_name);
466	}
467
468	/*
469	* Set owner, group, mode for target; do the chown first,
470	* chown may lose the setuid bits.
471	*/
472	#ifdef UF_IMMUTABLE
473	if ((gid != (gid_t)-1 && gid != to_sb.st_gid) \|\|
474	(uid != (uid_t)-1 && uid != to_sb.st_uid) \|\|
475	(mode != (to_sb.st_mode & ALLPERMS))) {
476	/* Try to turn off the immutable bits. */
477	if (to_sb.st_flags & NOCHANGEBITS)
478	(void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS);
479	}
480	#endif
481
482	if ((gid != (gid_t)-1 && gid != to_sb.st_gid) \|\|
483	(uid != (uid_t)-1 && uid != to_sb.st_uid))
484	if (fchown(to_fd, uid, gid) == -1) {
485	serrno = errno;
486	(void)unlink(to_name);
487	errno = serrno;
488	err(EX_OSERR,"%s: chown/chgrp", to_name);
489	}
490
491	if (mode != (to_sb.st_mode & ALLPERMS))
492	if (fchmod(to_fd, mode)) {
493	serrno = errno;
494	(void)unlink(to_name);
495	errno = serrno;
496	err(EX_OSERR, "%s: chmod", to_name);
497	}
498
499	/*
500	* If provided a set of flags, set them, otherwise, preserve the
501	* flags, except for the dump flag.
502	* NFS does not support flags. Ignore EOPNOTSUPP flags if we're just
503	* trying to turn off UF_NODUMP. If we're trying to set real flags,
504	* then warn if the the fs doesn't support it, otherwise fail.
505	*/
506	#ifdef UF_IMMUTABLE
507	if (!devnull && (flags & SETFLAGS \|\|
508	(from_sb.st_flags & ~UF_NODUMP) != to_sb.st_flags) &&
509	fchflags(to_fd,
510	flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) {
511	if (flags & SETFLAGS) {
512	if (errno == EOPNOTSUPP)
513	warn("%s: chflags", to_name);
514	else {
515	serrno = errno;
516	(void)unlink(to_name);
517	errno = serrno;
518	err(EX_OSERR, "%s: chflags", to_name);
519	}
520	}
521	}
522	#endif
523
524	(void)close(to_fd);
525	if (!devnull)
526	(void)close(from_fd);
527	}
528
529	/*
530	* compare --
531	* compare two files; non-zero means files differ
532	*/
533	int
534	compare(int from_fd, const char *from_name __unused, size_t from_len,
535	int to_fd, const char *to_name __unused, size_t to_len)
536	{
537	char p, q;
538	int rv;
539	int done_compare;
540
541	rv = 0;
542	if (from_len != to_len)
543	return 1;
544
545	if (from_len <= MAX_CMP_SIZE) {
546	#if !defined(__EMX__) && !defined(_MSC_VER)
547	done_compare = 0;
548	if (trymmap(from_fd) && trymmap(to_fd)) {
549	p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, from_fd, (off_t)0);
550	if (p == (char *)MAP_FAILED)
551	goto out;
552	q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, to_fd, (off_t)0);
553	if (q == (char *)MAP_FAILED) {
554	munmap(p, from_len);
555	goto out;
556	}
557
558	rv = memcmp(p, q, from_len);
559	munmap(p, from_len);
560	munmap(q, from_len);
561	done_compare = 1;
562	}
563	#endif
564	out:
565	if (!done_compare) {
566	char buf1[MAXBSIZE];
567	char buf2[MAXBSIZE];
568	int n1, n2;
569
570	rv = 0;
571	lseek(from_fd, 0, SEEK_SET);
572	lseek(to_fd, 0, SEEK_SET);
573	while (rv == 0) {
574	n1 = read(from_fd, buf1, sizeof(buf1));
575	if (n1 == 0)
576	break; /* EOF */
577	else if (n1 > 0) {
578	n2 = read(to_fd, buf2, n1);
579	if (n2 == n1)
580	rv = memcmp(buf1, buf2, n1);
581	else
582	rv = 1; /* out of sync */
583	} else
584	rv = 1; /* read failure */
585	}
586	lseek(from_fd, 0, SEEK_SET);
587	lseek(to_fd, 0, SEEK_SET);
588	}
589	} else
590	rv = 1; /* don't bother in this case */
591
592	return rv;
593	}
594
595	/*
596	* create_tempfile --
597	* create a temporary file based on path and open it
598	*/
599	int
600	create_tempfile(const char path, char temp, size_t tsize)
601	{
602	char *p;
603
604	(void)strncpy(temp, path, tsize);
605	temp[tsize - 1] = '\0';
606	if ((p = strrchr(temp, '/')) != NULL)
607	p++;
608	else
609	p = temp;
610	(void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p);
611	temp[tsize - 1] = '\0';
612	return (mkstemp(temp));
613	}
614
615	/*
616	* create_newfile --
617	* create a new file, overwriting an existing one if necessary
618	*/
619	int
620	create_newfile(const char path, int target, struct stat sbp)
621	{
622	char backup[MAXPATHLEN];
623	int saved_errno = 0;
624	int newfd;
625
626	if (target) {
627	/*
628	* Unlink now... avoid ETXTBSY errors later. Try to turn
629	* off the append/immutable bits -- if we fail, go ahead,
630	* it might work.
631	*/
632	#ifdef UF_IMMUTABLE
633	if (sbp->st_flags & NOCHANGEBITS)
634	(void)chflags(path, sbp->st_flags & ~NOCHANGEBITS);
635	#endif
636
637	if (dobackup) {
638	if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s",
639	path, suffix) != strlen(path) + strlen(suffix))
640	errx(EX_OSERR, "%s: backup filename too long",
641	path);
642	(void)snprintf(backup, MAXPATHLEN, "%s%s",
643	path, suffix);
644	if (verbose)
645	(void)printf("install: %s -> %s\n",
646	path, backup);
647	if (rename(path, backup) < 0)
648	err(EX_OSERR, "rename: %s to %s", path, backup);
649	} else
650	if (unlink(path) < 0)
651	saved_errno = errno;
652	}
653
654	newfd = open(path, O_CREAT \| O_RDWR \| O_TRUNC \| O_BINARY, S_IRUSR \| S_IWUSR);
655	if (newfd < 0 && saved_errno != 0)
656	errno = saved_errno;
657	return newfd;
658	}
659
660	/*
661	* copy --
662	* copy from one file to another
663	*/
664	void
665	copy(int from_fd, const char from_name, int to_fd, const char to_name,
666	off_t size)
667	{
668	int nr, nw;
669	int serrno;
670	char *p, buf[MAXBSIZE];
671	int done_copy;
672
673	/* Rewind file descriptors. */
674	if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1)
675	err(EX_OSERR, "lseek: %s", from_name);
676	if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1)
677	err(EX_OSERR, "lseek: %s", to_name);
678
679	/*
680	* Mmap and write if less than 8M (the limit is so we don't totally
681	* trash memory on big files. This is really a minor hack, but it
682	* wins some CPU back.
683	*/
684	done_copy = 0;
685	#if !defined(__EMX__) && !defined(_MSC_VER)
686	if (size <= 8 * 1048576 && trymmap(from_fd) &&
687	(p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED,
688	from_fd, (off_t)0)) != (char *)MAP_FAILED) {
689	if ((nw = write(to_fd, p, size)) != size) {
690	serrno = errno;
691	(void)unlink(to_name);
692	errno = nw > 0 ? EIO : serrno;
693	err(EX_OSERR, "%s", to_name);
694	}
695	done_copy = 1;
696	}
697	#endif
698	if (!done_copy) {
699	while ((nr = read(from_fd, buf, sizeof(buf))) > 0)
700	if ((nw = write(to_fd, buf, nr)) != nr) {
701	serrno = errno;
702	(void)unlink(to_name);
703	errno = nw > 0 ? EIO : serrno;
704	err(EX_OSERR, "%s", to_name);
705	}
706	if (nr != 0) {
707	serrno = errno;
708	(void)unlink(to_name);
709	errno = serrno;
710	err(EX_OSERR, "%s", from_name);
711	}
712	}
713	}
714
715	/*
716	* strip --
717	* use strip(1) to strip the target file
718	*/
719	void
720	strip(const char *to_name)
721	{
722	const char *stripbin;
723	int serrno, status;
724
725	switch (fork()) {
726	case -1:
727	serrno = errno;
728	(void)unlink(to_name);
729	errno = serrno;
730	err(EX_TEMPFAIL, "fork");
731	case 0:
732	stripbin = getenv("STRIPBIN");
733	if (stripbin == NULL)
734	stripbin = "strip";
735	execlp(stripbin, stripbin, to_name, (char *)NULL);
736	err(EX_OSERR, "exec(%s)", stripbin);
737	default:
738	if (wait(&status) == -1 \|\| status) {
739	serrno = errno;
740	(void)unlink(to_name);
741	errc(EX_SOFTWARE, serrno, "wait");
742	/* NOTREACHED */
743	}
744	}
745	}
746
747	/*
748	* install_dir --
749	* build directory heirarchy
750	*/
751	void
752	install_dir(char *path)
753	{
754	char *p;
755	struct stat sb;
756	int ch;
757
758	for (p = path;; ++p)
759	if (!p \|\| (p != path && p == '/')) {
760	ch = *p;
761	*p = '\0';
762	if (stat(path, &sb)) {
763	if (errno != ENOENT \|\| mkdir(path, 0755) < 0) {
764	err(EX_OSERR, "mkdir %s", path);
765	/* NOTREACHED */
766	} else if (verbose)
767	(void)printf("install: mkdir %s\n",
768	path);
769	} else if (!S_ISDIR(sb.st_mode))
770	errx(EX_OSERR, "%s exists but is not a directory", path);
771	if (!(*p = ch))
772	break;
773	}
774
775	if ((gid != (gid_t)-1 \|\| uid != (uid_t)-1) && chown(path, uid, gid))
776	warn("chown %u:%u %s", uid, gid, path);
777	if (chmod(path, mode))
778	warn("chmod %o %s", mode, path);
779	}
780
781	/*
782	* usage --
783	* print a usage message and die
784	*/
785	void
786	usage()
787	{
788	(void)fprintf(stderr,
789	"usage: install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n"
790	" [-o owner] file1 file2\n"
791	" install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n"
792	" [-o owner] file1 ... fileN directory\n"
793	" install -d [-v] [-g group] [-m mode] [-o owner] directory ...\n");
794	exit(EX_USAGE);
795	/* NOTREACHED */
796	}
797
798	/*
799	* trymmap --
800	* return true (1) if mmap should be tried, false (0) if not.
801	*/
802	int
803	trymmap(int fd)
804	{
805	/*
806	* The ifdef is for bootstrapping - f_fstypename doesn't exist in
807	* pre-Lite2-merge systems.
808	*/
809	#ifdef MFSNAMELEN
810	struct statfs stfs;
811
812	if (nommap \|\| fstatfs(fd, &stfs) != 0)
813	return (0);
814	if (strcmp(stfs.f_fstypename, "ufs") == 0 \|\|
815	strcmp(stfs.f_fstypename, "cd9660") == 0)
816	return (1);
817	#endif
818	return (0);
819	}

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source: kBuild/trunk/src/gmake/kmkbuiltin/install.c@ 368

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