install.c@ 2591

Last change on this file since 2591 was 2546, checked in by bird, 14 years ago
Applied modified patches for Haiku support from Mike Smith.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 27.2 KB

Line
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
45	#include <sys/cdefs.h>
46	__FBSDID("$FreeBSD: src/usr.bin/xinstall/xinstall.c,v 1.66 2005/01/25 14:34:57 ssouhlal Exp $");
47	#endif
48
49	#include "config.h"
50	#ifndef _MSC_VER
51	# include <sys/param.h>
52	# ifdef USE_MMAP
53	# include <sys/mman.h>
54	# endif
55	# ifndef __HAIKU__
56	# include <sys/mount.h>
57	# endif
58	# include <sys/wait.h>
59	# include <sys/time.h>
60	#endif /* !_MSC_VER */
61	#include <sys/stat.h>
62
63	#include <ctype.h>
64	#include "err.h"
65	#include <errno.h>
66	#include <fcntl.h>
67	#include <grp.h>
68	#include <paths.h>
69	#include <pwd.h>
70	#include <stdio.h>
71	#include <stdlib.h>
72	#include <string.h>
73	#ifndef __HAIKU__
74	# include <sysexits.h>
75	#endif
76	#include <unistd.h>
77	#if defined(__EMX__) \|\| defined(_MSC_VER)
78	# include <process.h>
79	#endif
80	#include "getopt.h"
81	#ifdef __sun__
82	# include "solfakes.h"
83	#endif
84	#ifdef _MSC_VER
85	# include "mscfakes.h"
86	#endif
87	#ifdef __HAIKU__
88	# include "haikufakes.h"
89	#endif
90	#include "kmkbuiltin.h"
91
92
93	extern void * bsd_setmode(const char *p);
94	extern mode_t bsd_getmode(const void *bbox, mode_t omode);
95
96	#ifndef __unused
97	# define __unused
98	#endif
99
100	#ifndef MAXBSIZE
101	# define MAXBSIZE 0x20000
102	#endif
103
104	/* Bootstrap aid - this doesn't exist in most older releases */
105	#ifndef MAP_FAILED
106	#define MAP_FAILED ((void )-1) / from <sys/mman.h> */
107	#endif
108
109	#define MAX_CMP_SIZE (16 * 1024 * 1024)
110
111	#define DIRECTORY 0x01 /* Tell install it's a directory. */
112	#define SETFLAGS 0x02 /* Tell install to set flags. */
113	#define NOCHANGEBITS (UF_IMMUTABLE \| UF_APPEND \| SF_IMMUTABLE \| SF_APPEND)
114	#define BACKUP_SUFFIX ".old"
115
116	#ifndef O_BINARY
117	# define O_BINARY 0
118	#endif
119
120	#ifndef EFTYPE
121	# define EFTYPE EINVAL
122	#endif
123
124	#if defined(__WIN32__) \|\| defined(__WIN64__) \|\| defined(__OS2__)
125	# define IS_SLASH(ch) ((ch) == '/' \|\| (ch) == '\\')
126	#else
127	# define IS_SLASH(ch) ((ch) == '/')
128	#endif
129
130	static gid_t gid;
131	static uid_t uid;
132	static int dobackup, docompare, dodir, dopreserve, dostrip, nommap, safecopy, verbose, mode_given;
133	static mode_t mode = S_IRWXU \| S_IRGRP \| S_IXGRP \| S_IROTH \| S_IXOTH;
134	static const char *suffix = BACKUP_SUFFIX;
135	static int ignore_perm_errors;
136	static int hard_link_files_when_possible;
137
138	static struct option long_options[] =
139	{
140	{ "help", no_argument, 0, 261 },
141	{ "version", no_argument, 0, 262 },
142	{ "ignore-perm-errors", no_argument, 0, 263 },
143	{ "no-ignore-perm-errors", no_argument, 0, 264 },
144	{ "hard-link-files-when-possible", no_argument, 0, 265 },
145	{ "no-hard-link-files-when-possible", no_argument, 0, 266 },
146	{ 0, 0, 0, 0 },
147	};
148
149
150	static int copy(int, const char , int, const char , off_t);
151	static int compare(int, const char , size_t, int, const char , size_t);
152	static int create_newfile(const char , int, struct stat );
153	static int create_tempfile(const char , char , size_t);
154	static int install(const char , const char , u_long, u_int);
155	static int install_dir(char *);
156	static u_long numeric_id(const char , const char );
157	static int strip(const char *);
158	#ifdef USE_MMAP
159	static int trymmap(int);
160	#endif
161	static int usage(FILE *);
162	static char last_slash(const char );
163
164	int
165	kmk_builtin_install(int argc, char argv[], char * envp)
166	{
167	struct stat from_sb, to_sb;
168	mode_t *set;
169	u_long fset = 0;
170	int ch, no_target;
171	u_int iflags;
172	char *flags;
173	const char group, owner, *to_name;
174	(void)envp;
175
176	/* reinitialize globals */
177	mode = S_IRWXU \| S_IRGRP \| S_IXGRP \| S_IROTH \| S_IXOTH;
178	suffix = BACKUP_SUFFIX;
179	gid = 0;
180	uid = 0;
181	dobackup = docompare = dodir = dopreserve = dostrip = nommap = safecopy = verbose = mode_given = 0;
182	ignore_perm_errors = geteuid() != 0;
183	hard_link_files_when_possible = 0;
184
185	/* reset getopt and set progname. */
186	g_progname = argv[0];
187	opterr = 1;
188	optarg = NULL;
189	optopt = 0;
190	optind = 0; /* init */
191
192	iflags = 0;
193	group = owner = NULL;
194	while ((ch = getopt_long(argc, argv, "B:bCcdf:g:Mm:o:pSsv", long_options, NULL)) != -1)
195	switch(ch) {
196	case 'B':
197	suffix = optarg;
198	/* FALLTHROUGH */
199	case 'b':
200	dobackup = 1;
201	break;
202	case 'C':
203	docompare = 1;
204	break;
205	case 'c':
206	/* For backwards compatibility. */
207	break;
208	case 'd':
209	dodir = 1;
210	break;
211	case 'f':
212	#ifdef UF_IMMUTABLE
213	flags = optarg;
214	if (strtofflags(&flags, &fset, NULL))
215	return errx(EX_USAGE, "%s: invalid flag", flags);
216	iflags \|= SETFLAGS;
217	#else
218	(void)flags;
219	#endif
220	break;
221	case 'g':
222	group = optarg;
223	break;
224	case 'M':
225	nommap = 1;
226	break;
227	case 'm':
228	if (!(set = bsd_setmode(optarg)))
229	return errx(EX_USAGE, "invalid file mode: %s",
230	optarg);
231	mode = bsd_getmode(set, 0);
232	free(set);
233	mode_given = 1;
234	break;
235	case 'o':
236	owner = optarg;
237	break;
238	case 'p':
239	docompare = dopreserve = 1;
240	break;
241	case 'S':
242	safecopy = 1;
243	break;
244	case 's':
245	dostrip = 1;
246	break;
247	case 'v':
248	verbose = 1;
249	break;
250	case 261:
251	usage(stdout);
252	return 0;
253	case 262:
254	return kbuild_version(argv[0]);
255	case 263:
256	ignore_perm_errors = 1;
257	break;
258	case 264:
259	ignore_perm_errors = 0;
260	break;
261	case 265:
262	hard_link_files_when_possible = 1;
263	break;
264	case 266:
265	hard_link_files_when_possible = 0;
266	break;
267	case '?':
268	default:
269	return usage(stderr);
270	}
271	argc -= optind;
272	argv += optind;
273
274	/* some options make no sense when creating directories */
275	if (dostrip && dodir) {
276	warnx("-d and -s may not be specified together");
277	return usage(stderr);
278	}
279
280	/* must have at least two arguments, except when creating directories */
281	if (argc == 0 \|\| (argc == 1 && !dodir))
282	return usage(stderr);
283
284	/* need to make a temp copy so we can compare stripped version */
285	if (docompare && dostrip)
286	safecopy = 1;
287
288	/* get group and owner id's */
289	if (group != NULL) {
290	#ifndef _MSC_VER
291	struct group *gp;
292	if ((gp = getgrnam(group)) != NULL)
293	gid = gp->gr_gid;
294	else
295	#endif
296	{
297	gid = (gid_t)numeric_id(group, "group");
298	if (gid == (gid_t)-1)
299	return 1;
300	}
301	} else
302	gid = (gid_t)-1;
303
304	if (owner != NULL) {
305	#ifndef _MSC_VER
306	struct passwd *pp;
307	if ((pp = getpwnam(owner)) != NULL)
308	uid = pp->pw_uid;
309	else
310	#endif
311	{
312	uid = (uid_t)numeric_id(owner, "user");
313	if (uid == (uid_t)-1)
314	return 1;
315	}
316	} else
317	uid = (uid_t)-1;
318
319	if (dodir) {
320	for (; *argv != NULL; ++argv) {
321	int rc = install_dir(*argv);
322	if (rc)
323	return rc;
324	}
325	return EX_OK;
326	/* NOTREACHED */
327	}
328
329	no_target = stat(to_name = argv[argc - 1], &to_sb);
330	if (!no_target && S_ISDIR(to_sb.st_mode)) {
331	for (; *argv != to_name; ++argv) {
332	int rc = install(*argv, to_name, fset, iflags \| DIRECTORY);
333	if (rc)
334	return rc;
335	}
336	return EX_OK;
337	}
338
339	/* can't do file1 file2 directory/file */
340	if (argc != 2) {
341	warnx("wrong number or types of arguments");
342	return usage(stderr);
343	}
344
345	if (!no_target) {
346	if (stat(*argv, &from_sb))
347	return err(EX_OSERR, "%s", *argv);
348	if (!S_ISREG(to_sb.st_mode)) {
349	errno = EFTYPE;
350	return err(EX_OSERR, "%s", to_name);
351	}
352	if (to_sb.st_dev == from_sb.st_dev &&
353	to_sb.st_dev != 0 &&
354	to_sb.st_ino == from_sb.st_ino &&
355	to_sb.st_ino != 0 &&
356	!hard_link_files_when_possible)
357	return errx(EX_USAGE,
358	"%s and %s are the same file", *argv, to_name);
359	}
360	return install(*argv, to_name, fset, iflags);
361	}
362
363	static u_long
364	numeric_id(const char name, const char type)
365	{
366	u_long val;
367	char *ep;
368
369	/*
370	* XXX
371	* We know that uid_t's and gid_t's are unsigned longs.
372	*/
373	errno = 0;
374	val = strtoul(name, &ep, 10);
375	if (errno)
376	return err(-1, "%s", name);
377	if (*ep != '\0')
378	return errx(-1, "unknown %s %s", type, name);
379	return (val);
380	}
381
382	/*
383	* install --
384	* build a path name and install the file
385	*/
386	static int
387	install(const char from_name, const char to_name, u_long fset, u_int flags)
388	{
389	struct stat from_sb, temp_sb, to_sb;
390	struct timeval tvb[2];
391	int devnull, files_match, from_fd, serrno, target;
392	int tempcopy, temp_fd, to_fd;
393	char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN];
394	int rc = EX_OK;
395
396	files_match = 0;
397	from_fd = -1;
398	to_fd = -1;
399	temp_fd = -1;
400
401	/* If try to install NULL file to a directory, fails. */
402	if (flags & DIRECTORY
403	#if defined(__EMX__) \|\| defined(_MSC_VER)
404	\|\| ( stricmp(from_name, _PATH_DEVNULL)
405	&& stricmp(from_name, "nul")
406	# ifdef __EMX__
407	&& stricmp(from_name, "/dev/nul")
408	# endif
409	)
410	#else
411	\|\| strcmp(from_name, _PATH_DEVNULL)
412	#endif
413	) {
414	if (stat(from_name, &from_sb))
415	return err(EX_OSERR, "%s", from_name);
416	if (!S_ISREG(from_sb.st_mode)) {
417	errno = EFTYPE;
418	return err(EX_OSERR, "%s", from_name);
419	}
420	/* Build the target path. */
421	if (flags & DIRECTORY) {
422	(void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s",
423	to_name,
424	(p = last_slash(from_name)) ? ++p : from_name);
425	to_name = pathbuf;
426	}
427	devnull = 0;
428	} else {
429	devnull = 1;
430	}
431
432	target = stat(to_name, &to_sb) == 0;
433
434	/* Only install to regular files. */
435	if (target && !S_ISREG(to_sb.st_mode)) {
436	errno = EFTYPE;
437	warn("%s", to_name);
438	return EX_OK;
439	}
440
441	/* Only copy safe if the target exists. */
442	tempcopy = safecopy && target;
443
444	/* Try hard linking if wanted and possible. */
445	if (hard_link_files_when_possible)
446	{
447	#ifdef KBUILD_OS_OS2
448	const char *why_not = "not supported on OS/2";
449	#else
450	const char *why_not = NULL;
451	if (devnull) {
452	why_not = "/dev/null";
453	} else if (dostrip) {
454	why_not = "strip (-s)";
455	} else if (docompare) {
456	why_not = "compare (-C)";
457	} else if (dobackup) {
458	why_not = "backup (-b/-B)";
459	} else if (safecopy) {
460	why_not = "safe copy (-S)";
461	} else if (lstat(from_name, &temp_sb)) {
462	why_not = "lstat on source failed";
463	} else if (S_ISLNK(temp_sb.st_mode)) {
464	why_not = "symlink";
465	} else if (!S_ISREG(temp_sb.st_mode)) {
466	why_not = "not regular file";
467	# if defined(KBUILD_OS_WINDOWS) \|\| defined(KBUILD_OS_OS2)
468	} else if ((mode & S_IWUSR) != (from_sb.st_mode & S_IWUSR)) {
469	# else
470	} else if (mode != (from_sb.st_mode & ALLPERMS)) {
471	# endif
472	printf("install: warning: Not hard linking, mode differs: 0%03o, desires 0%03o\n"
473	"install: src path '%s'\n"
474	"install: dst path '%s'\n",
475	(from_sb.st_mode & ALLPERMS), mode, from_name, to_name);
476	why_not = NULL;
477	} else if (uid != (uid_t)-1 && gid != from_sb.st_uid) {
478	why_not = "uid mismatch";
479	} else if (gid != (gid_t)-1 && gid != from_sb.st_gid) {
480	why_not = "gid mismatch";
481	} else {
482	int rcLink = link(from_name, to_name);
483	if (rcLink != 0 && errno == EEXIST) {
484	unlink(to_name);
485	rcLink = link(from_name, to_name);
486	}
487	if (rcLink == 0) {
488	if (verbose)
489	printf("install: %s -> %s (hardlinked)\n", from_name, to_name);
490	goto l_done;
491	}
492	if (verbose)
493	printf("install: hard linking '%s' to '%s' failed: %s\n",
494	to_name, from_name, strerror(errno));
495	why_not = NULL;
496	}
497	#endif
498	if (verbose && why_not)
499	printf("install: not hard linking '%s' to '%s' because: %s\n",
500	to_name, from_name, why_not);
501
502	/* Can't hard link or we failed, continue as nothing happend. */
503	}
504
505	if (!devnull && (from_fd = open(from_name, O_RDONLY \| O_BINARY, 0)) < 0)
506	return err(EX_OSERR, "%s", from_name);
507
508	/* If we don't strip, we can compare first. */
509	if (docompare && !dostrip && target) {
510	if ((to_fd = open(to_name, O_RDONLY \| O_BINARY, 0)) < 0) {
511	rc = err(EX_OSERR, "%s", to_name);
512	goto l_done;
513	}
514	if (devnull)
515	files_match = to_sb.st_size == 0;
516	else
517	files_match = !(compare(from_fd, from_name,
518	(size_t)from_sb.st_size, to_fd,
519	to_name, (size_t)to_sb.st_size));
520
521	/* Close "to" file unless we match. */
522	if (!files_match) {
523	(void)close(to_fd);
524	to_fd = -1;
525	}
526	}
527
528	if (!files_match) {
529	if (tempcopy) {
530	to_fd = create_tempfile(to_name, tempfile,
531	sizeof(tempfile));
532	if (to_fd < 0) {
533	rc = err(EX_OSERR, "%s", tempfile);
534	goto l_done;
535	}
536	} else {
537	if ((to_fd = create_newfile(to_name, target,
538	&to_sb)) < 0) {
539	rc = err(EX_OSERR, "%s", to_name);
540	goto l_done;
541	}
542	if (verbose)
543	(void)printf("install: %s -> %s\n",
544	from_name, to_name);
545	}
546	if (!devnull) {
547	rc = copy(from_fd, from_name, to_fd,
548	tempcopy ? tempfile : to_name, from_sb.st_size);
549	if (rc)
550	goto l_done;
551	}
552	}
553
554	if (dostrip) {
555	#if defined(__EMX__) \|\| defined(_MSC_VER)
556	/* close before we strip. */
557	close(to_fd);
558	to_fd = -1;
559	#endif
560	rc = strip(tempcopy ? tempfile : to_name);
561	if (rc)
562	goto l_done;
563
564	/*
565	* Re-open our fd on the target, in case we used a strip
566	* that does not work in-place -- like GNU binutils strip.
567	*/
568	#if !defined(__EMX__) && !defined(_MSC_VER)
569	close(to_fd);
570	#endif
571	to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY \| O_BINARY, 0);
572	if (to_fd < 0) {
573	rc = err(EX_OSERR, "stripping %s", to_name);
574	goto l_done;
575	}
576	}
577
578	/*
579	* Compare the stripped temp file with the target.
580	*/
581	if (docompare && dostrip && target) {
582	temp_fd = to_fd;
583
584	/* Re-open to_fd using the real target name. */
585	if ((to_fd = open(to_name, O_RDONLY \| O_BINARY, 0)) < 0) {
586	rc = err(EX_OSERR, "%s", to_name);
587	goto l_done;
588	}
589
590	if (fstat(temp_fd, &temp_sb)) {
591	serrno = errno;
592	(void)unlink(tempfile);
593	errno = serrno;
594	rc = err(EX_OSERR, "%s", tempfile);
595	goto l_done;
596	}
597
598	if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd,
599	to_name, (size_t)to_sb.st_size) == 0) {
600	/*
601	* If target has more than one link we need to
602	* replace it in order to snap the extra links.
603	* Need to preserve target file times, though.
604	*/
605	#if !defined(_MSC_VER) && !defined(__EMX__)
606	if (to_sb.st_nlink != 1) {
607	tvb[0].tv_sec = to_sb.st_atime;
608	tvb[0].tv_usec = 0;
609	tvb[1].tv_sec = to_sb.st_mtime;
610	tvb[1].tv_usec = 0;
611	(void)utimes(tempfile, tvb);
612	} else
613	#endif
614	{
615
616	files_match = 1;
617	(void)unlink(tempfile);
618	}
619	(void) close(temp_fd);
620	temp_fd = -1;
621	}
622	}
623
624	/*
625	* Move the new file into place if doing a safe copy
626	* and the files are different (or just not compared).
627	*/
628	if (tempcopy && !files_match) {
629	#ifdef UF_IMMUTABLE
630	/* Try to turn off the immutable bits. */
631	if (to_sb.st_flags & NOCHANGEBITS)
632	(void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS);
633	#endif
634	if (dobackup) {
635	if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name,
636	suffix) != strlen(to_name) + strlen(suffix)) {
637	unlink(tempfile);
638	rc = errx(EX_OSERR, "%s: backup filename too long",
639	to_name);
640	goto l_done;
641	}
642	if (verbose)
643	(void)printf("install: %s -> %s\n", to_name, backup);
644	if (rename(to_name, backup) < 0) {
645	serrno = errno;
646	unlink(tempfile);
647	errno = serrno;
648	rc = err(EX_OSERR, "rename: %s to %s", to_name,
649	backup);
650	goto l_done;
651	}
652	}
653	if (verbose)
654	(void)printf("install: %s -> %s\n", from_name, to_name);
655	if (rename(tempfile, to_name) < 0) {
656	serrno = errno;
657	unlink(tempfile);
658	errno = serrno;
659	rc = err(EX_OSERR, "rename: %s to %s",
660	tempfile, to_name);
661	goto l_done;
662	}
663
664	/* Re-open to_fd so we aren't hosed by the rename(2). */
665	(void) close(to_fd);
666	if ((to_fd = open(to_name, O_RDONLY \| O_BINARY, 0)) < 0) {
667	rc = err(EX_OSERR, "%s", to_name);
668	goto l_done;
669	}
670	}
671
672	/*
673	* Preserve the timestamp of the source file if necessary.
674	*/
675	if (dopreserve && !files_match && !devnull) {
676	tvb[0].tv_sec = from_sb.st_atime;
677	tvb[0].tv_usec = 0;
678	tvb[1].tv_sec = from_sb.st_mtime;
679	tvb[1].tv_usec = 0;
680	(void)utimes(to_name, tvb);
681	}
682
683	if (fstat(to_fd, &to_sb) == -1) {
684	serrno = errno;
685	(void)unlink(to_name);
686	errno = serrno;
687	rc = err(EX_OSERR, "%s", to_name);
688	goto l_done;
689	}
690
691	/*
692	* Set owner, group, mode for target; do the chown first,
693	* chown may lose the setuid bits.
694	*/
695	#ifdef UF_IMMUTABLE
696	if ((gid != (gid_t)-1 && gid != to_sb.st_gid) \|\|
697	(uid != (uid_t)-1 && uid != to_sb.st_uid) \|\|
698	(mode != (to_sb.st_mode & ALLPERMS))) {
699	/* Try to turn off the immutable bits. */
700	if (to_sb.st_flags & NOCHANGEBITS)
701	(void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS);
702	}
703	#endif
704
705	if ((gid != (gid_t)-1 && gid != to_sb.st_gid) \|\|
706	(uid != (uid_t)-1 && uid != to_sb.st_uid))
707	if (fchown(to_fd, uid, gid) == -1) {
708	if (errno == EPERM && ignore_perm_errors) {
709	warn("%s: ignoring chown uid=%d gid=%d failure", to_name, (int)uid, (int)gid);
710	} else {
711	serrno = errno;
712	(void)unlink(to_name);
713	errno = serrno;
714	rc = err(EX_OSERR,"%s: chown/chgrp", to_name);
715	goto l_done;
716	}
717	}
718
719	if (mode != (to_sb.st_mode & ALLPERMS))
720	if (fchmod(to_fd, mode)) {
721	serrno = errno;
722	if (serrno == EPERM && ignore_perm_errors) {
723	fchmod(to_fd, mode & (ALLPERMS & ~0007000));
724	errno = errno;
725	warn("%s: ignoring chmod 0%o failure", to_name, (int)(mode & ALLPERMS));
726	} else {
727	serrno = errno;
728	(void)unlink(to_name);
729	errno = serrno;
730	rc = err(EX_OSERR, "%s: chmod", to_name);
731	goto l_done;
732	}
733	}
734
735	/*
736	* If provided a set of flags, set them, otherwise, preserve the
737	* flags, except for the dump flag.
738	* NFS does not support flags. Ignore EOPNOTSUPP flags if we're just
739	* trying to turn off UF_NODUMP. If we're trying to set real flags,
740	* then warn if the the fs doesn't support it, otherwise fail.
741	*/
742	#ifdef UF_IMMUTABLE
743	if (!devnull && (flags & SETFLAGS \|\|
744	(from_sb.st_flags & ~UF_NODUMP) != to_sb.st_flags) &&
745	fchflags(to_fd,
746	flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) {
747	if (flags & SETFLAGS) {
748	if (errno == EOPNOTSUPP)
749	warn("%s: chflags", to_name);
750	else {
751	serrno = errno;
752	(void)unlink(to_name);
753	errno = serrno;
754	rc = err(EX_OSERR, "%s: chflags", to_name);
755	goto l_done;
756	}
757	}
758	}
759	#endif
760
761	l_done:
762	if (to_fd >= 0)
763	(void)close(to_fd);
764	if (temp_fd >= 0)
765	(void)close(temp_fd);
766	if (from_fd >= 0 && !devnull)
767	(void)close(from_fd);
768	return rc;
769	}
770
771	/*
772	* compare --
773	* compare two files; non-zero means files differ
774	*/
775	static int
776	compare(int from_fd, const char *from_name __unused, size_t from_len,
777	int to_fd, const char *to_name __unused, size_t to_len)
778	{
779	char p, q;
780	int rv;
781	int done_compare;
782
783	rv = 0;
784	if (from_len != to_len)
785	return 1;
786
787	if (from_len <= MAX_CMP_SIZE) {
788	#ifdef USE_MMAP
789	done_compare = 0;
790	if (trymmap(from_fd) && trymmap(to_fd)) {
791	p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, from_fd, (off_t)0);
792	if (p == (char *)MAP_FAILED)
793	goto out;
794	q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, to_fd, (off_t)0);
795	if (q == (char *)MAP_FAILED) {
796	munmap(p, from_len);
797	goto out;
798	}
799
800	rv = memcmp(p, q, from_len);
801	munmap(p, from_len);
802	munmap(q, from_len);
803	done_compare = 1;
804	}
805	out:
806	#else
807	(void)p; (void)q;
808	done_compare = 0;
809	#endif
810	if (!done_compare) {
811	char buf1[MAXBSIZE];
812	char buf2[MAXBSIZE];
813	int n1, n2;
814
815	rv = 0;
816	lseek(from_fd, 0, SEEK_SET);
817	lseek(to_fd, 0, SEEK_SET);
818	while (rv == 0) {
819	n1 = read(from_fd, buf1, sizeof(buf1));
820	if (n1 == 0)
821	break; /* EOF */
822	else if (n1 > 0) {
823	n2 = read(to_fd, buf2, n1);
824	if (n2 == n1)
825	rv = memcmp(buf1, buf2, n1);
826	else
827	rv = 1; /* out of sync */
828	} else
829	rv = 1; /* read failure */
830	}
831	lseek(from_fd, 0, SEEK_SET);
832	lseek(to_fd, 0, SEEK_SET);
833	}
834	} else
835	rv = 1; /* don't bother in this case */
836
837	return rv;
838	}
839
840	/*
841	* create_tempfile --
842	* create a temporary file based on path and open it
843	*/
844	int
845	create_tempfile(const char path, char temp, size_t tsize)
846	{
847	char *p;
848
849	(void)strncpy(temp, path, tsize);
850	temp[tsize - 1] = '\0';
851	if ((p = last_slash(temp)) != NULL)
852	p++;
853	else
854	p = temp;
855	(void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p);
856	temp[tsize - 1] = '\0';
857	return (mkstemp(temp));
858	}
859
860	/*
861	* create_newfile --
862	* create a new file, overwriting an existing one if necessary
863	*/
864	int
865	create_newfile(const char path, int target, struct stat sbp)
866	{
867	char backup[MAXPATHLEN];
868	int saved_errno = 0;
869	int newfd;
870
871	if (target) {
872	/*
873	* Unlink now... avoid ETXTBSY errors later. Try to turn
874	* off the append/immutable bits -- if we fail, go ahead,
875	* it might work.
876	*/
877	#ifdef UF_IMMUTABLE
878	if (sbp->st_flags & NOCHANGEBITS)
879	(void)chflags(path, sbp->st_flags & ~NOCHANGEBITS);
880	#endif
881
882	if (dobackup) {
883	if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s",
884	path, suffix) != strlen(path) + strlen(suffix)) {
885	errx(EX_OSERR, "%s: backup filename too long",
886	path);
887	errno = ENAMETOOLONG;
888	return -1;
889	}
890	(void)snprintf(backup, MAXPATHLEN, "%s%s",
891	path, suffix);
892	if (verbose)
893	(void)printf("install: %s -> %s\n",
894	path, backup);
895	if (rename(path, backup) < 0) {
896	err(EX_OSERR, "rename: %s to %s", path, backup);
897	return -1;
898	}
899	} else
900	if (unlink(path) < 0)
901	saved_errno = errno;
902	}
903
904	newfd = open(path, O_CREAT \| O_RDWR \| O_TRUNC \| O_BINARY, S_IRUSR \| S_IWUSR);
905	if (newfd < 0 && saved_errno != 0)
906	errno = saved_errno;
907	return newfd;
908	}
909
910	/*
911	* copy --
912	* copy from one file to another
913	*/
914	static int
915	copy(int from_fd, const char from_name, int to_fd, const char to_name,
916	off_t size)
917	{
918	int nr, nw;
919	int serrno;
920	char *p, buf[MAXBSIZE];
921	int done_copy;
922
923	/* Rewind file descriptors. */
924	if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1)
925	return err(EX_OSERR, "lseek: %s", from_name);
926	if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1)
927	return err(EX_OSERR, "lseek: %s", to_name);
928
929	/*
930	* Mmap and write if less than 8M (the limit is so we don't totally
931	* trash memory on big files. This is really a minor hack, but it
932	* wins some CPU back.
933	*/
934	done_copy = 0;
935	#ifdef USE_MMAP
936	if (size <= 8 * 1048576 && trymmap(from_fd) &&
937	(p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED,
938	from_fd, (off_t)0)) != (char *)MAP_FAILED) {
939	if ((nw = write(to_fd, p, size)) != size) {
940	serrno = errno;
941	(void)unlink(to_name);
942	errno = nw > 0 ? EIO : serrno;
943	err(EX_OSERR, "%s", to_name);
944	}
945	done_copy = 1;
946	}
947	#else
948	(void)p; (void)size;
949	#endif
950	if (!done_copy) {
951	while ((nr = read(from_fd, buf, sizeof(buf))) > 0)
952	if ((nw = write(to_fd, buf, nr)) != nr) {
953	serrno = errno;
954	(void)unlink(to_name);
955	errno = nw > 0 ? EIO : serrno;
956	return err(EX_OSERR, "%s", to_name);
957	}
958	if (nr != 0) {
959	serrno = errno;
960	(void)unlink(to_name);
961	errno = serrno;
962	return err(EX_OSERR, "%s", from_name);
963	}
964	}
965	return EX_OK;
966	}
967
968	/*
969	* strip --
970	* use strip(1) to strip the target file
971	*/
972	static int
973	strip(const char *to_name)
974	{
975	#if defined(__EMX__) \|\| defined(_MSC_VER)
976	const char *stripbin = getenv("STRIPBIN");
977	if (stripbin == NULL)
978	stripbin = "strip";
979	return spawnlp(P_WAIT, stripbin, stripbin, to_name, NULL);
980	#else
981	const char *stripbin;
982	int serrno, status;
983	pid_t pid;
984
985	pid = fork();
986	switch (pid) {
987	case -1:
988	serrno = errno;
989	(void)unlink(to_name);
990	errno = serrno;
991	return err(EX_TEMPFAIL, "fork");
992	case 0:
993	stripbin = getenv("STRIPBIN");
994	if (stripbin == NULL)
995	stripbin = "strip";
996	execlp(stripbin, stripbin, to_name, (char *)NULL);
997	err(EX_OSERR, "exec(%s)", stripbin);
998	exit(EX_OSERR);
999	default:
1000	if (waitpid(pid, &status, 0) == -1 \|\| status) {
1001	serrno = errno;
1002	(void)unlink(to_name);
1003	errno = serrno;
1004	return err(EX_SOFTWARE, "waitpid");
1005	/* NOTREACHED */
1006	}
1007	}
1008	return 0;
1009	#endif
1010	}
1011
1012	/*
1013	* install_dir --
1014	* build directory heirarchy
1015	*/
1016	static int
1017	install_dir(char *path)
1018	{
1019	char *p;
1020	struct stat sb;
1021	int ch;
1022
1023	for (p = path;; ++p)
1024	if (!p \|\| (p != path && IS_SLASH(p))) {
1025	ch = *p;
1026	*p = '\0';
1027	if (stat(path, &sb)) {
1028	if (errno != ENOENT \|\| mkdir(path, 0755) < 0) {
1029	return err(EX_OSERR, "mkdir %s", path);
1030	/* NOTREACHED */
1031	} else if (verbose)
1032	(void)printf("install: mkdir %s\n",
1033	path);
1034	} else if (!S_ISDIR(sb.st_mode))
1035	return errx(EX_OSERR, "%s exists but is not a directory", path);
1036	if (!(*p = ch))
1037	break;
1038	}
1039
1040	if ((gid != (gid_t)-1 \|\| uid != (uid_t)-1) && chown(path, uid, gid))
1041	warn("chown %u:%u %s", uid, gid, path);
1042	if (chmod(path, mode))
1043	warn("chmod %o %s", mode, path);
1044	return EX_OK;
1045	}
1046
1047	/*
1048	* usage --
1049	* print a usage message and die
1050	*/
1051	static int
1052	usage(FILE *pf)
1053	{
1054	fprintf(pf,
1055	"usage: %s [-bCcpSsv] [--[no-]hard-link-files-when-possible]\n"
1056	" [--[no-]ignore-perm-errors] [-B suffix] [-f flags]\n"
1057	" [-g group] [-m mode] [-o owner] file1 file2\n"
1058	" or: %s [-bCcpSsv] [--[no-]ignore-perm-errors] [-B suffix] [-f flags]\n"
1059	" [-g group] [-m mode] [-o owner] file1 ... fileN directory\n"
1060	" or: %s -d [-v] [-g group] [-m mode] [-o owner] directory ...\n"
1061	" or: %s --help\n"
1062	" or: %s --version\n",
1063	g_progname, g_progname, g_progname, g_progname, g_progname);
1064	return EX_USAGE;
1065	}
1066
1067	#ifdef USE_MMAP
1068	/*
1069	* trymmap --
1070	* return true (1) if mmap should be tried, false (0) if not.
1071	*/
1072	static int
1073	trymmap(int fd)
1074	{
1075	/*
1076	* The ifdef is for bootstrapping - f_fstypename doesn't exist in
1077	* pre-Lite2-merge systems.
1078	*/
1079	#ifdef MFSNAMELEN
1080	struct statfs stfs;
1081
1082	if (nommap \|\| fstatfs(fd, &stfs) != 0)
1083	return (0);
1084	if (strcmp(stfs.f_fstypename, "ufs") == 0 \|\|
1085	strcmp(stfs.f_fstypename, "cd9660") == 0)
1086	return (1);
1087	#endif
1088	return (0);
1089	}
1090	#endif
1091
1092	/* figures out where the last slash or colon is. */
1093	static char *
1094	last_slash(const char *path)
1095	{
1096	#if defined(__WIN32__) \|\| defined(__WIN64__) \|\| defined(__OS2__)
1097	char p = (char )strrchr(path, '/');
1098	if (p)
1099	{
1100	char *p2 = strrchr(p, '\\');
1101	if (p2)
1102	p = p2;
1103	}
1104	else
1105	{
1106	p = (char *)strrchr(path, '\\');
1107	if (!p && isalpha(path[0]) && path[1] == ':')
1108	p = (char *)&path[1];
1109	}
1110	return p;
1111	#else
1112	return strrchr(path, '/');
1113	#endif
1114	}
1115

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source: kBuild/trunk/src/kmk/kmkbuiltin/install.c@ 2591

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