chflags.c revision 1590 
1/*
2 * Copyright (c) 1992, 1993, 1994
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 char copyright[] =
36"@(#) Copyright (c) 1992, 1993, 1994\n\
37	The Regents of the University of California.  All rights reserved.\n";
38#endif /* not lint */
39
40#ifndef lint
41static char sccsid[] = "@(#)chflags.c	8.5 (Berkeley) 4/1/94";
42#endif /* not lint */
43
44#include <sys/types.h>
45#include <sys/stat.h>
46
47#include <err.h>
48#include <errno.h>
49#include <fts.h>
50#include <stdio.h>
51#include <stdlib.h>
52#include <string.h>
53#include <unistd.h>
54
55u_long	string_to_flags __P((char **, u_long *, u_long *));
56void	usage __P((void));
57
58int
59main(argc, argv)
60	int argc;
61	char *argv[];
62{
63	FTS *ftsp;
64	FTSENT *p;
65	u_long clear, set;
66	long val;
67	int Hflag, Lflag, Pflag, Rflag, ch, fts_options, oct, rval;
68	char *flags, *ep;
69
70	Hflag = Lflag = Pflag = Rflag = 0;
71	while ((ch = getopt(argc, argv, "HLPR")) != EOF)
72		switch (ch) {
73		case 'H':
74			Hflag = 1;
75			Lflag = Pflag = 0;
76			break;
77		case 'L':
78			Lflag = 1;
79			Hflag = Pflag = 0;
80			break;
81		case 'P':
82			Pflag = 1;
83			Hflag = Lflag = 0;
84			break;
85		case 'R':
86			Rflag = 1;
87			break;
88		case '?':
89		default:
90			usage();
91		}
92	argv += optind;
93	argc -= optind;
94
95	if (argc < 2)
96		usage();
97
98	fts_options = FTS_PHYSICAL;
99	if (Rflag) {
100		if (Hflag)
101			fts_options |= FTS_COMFOLLOW;
102		if (Lflag) {
103			fts_options &= ~FTS_PHYSICAL;
104			fts_options |= FTS_LOGICAL;
105		}
106	}
107
108	flags = *argv;
109	if (*flags >= '0' && *flags <= '7') {
110		errno = 0;
111		val = strtol(flags, &ep, 8);
112		if (val < 0)
113			errno = ERANGE;
114		if (errno)
115                        err(1, "invalid flags: %s", flags);
116                if (*ep)
117                        errx(1, "invalid flags: %s", flags);
118		set = val;
119                oct = 1;
120	} else {
121		if (string_to_flags(&flags, &set, &clear))
122                        errx(1, "invalid flag: %s", flags);
123		clear = ~clear;
124		oct = 0;
125	}
126
127	if ((ftsp = fts_open(++argv, fts_options , 0)) == NULL)
128		err(1, NULL);
129
130	for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
131		switch (p->fts_info) {
132		case FTS_D:
133			if (Rflag)		/* Change it at FTS_DP. */
134				continue;
135			fts_set(ftsp, p, FTS_SKIP);
136			break;
137		case FTS_DNR:			/* Warn, chflag, continue. */
138			warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
139			rval = 1;
140			break;
141		case FTS_ERR:			/* Warn, continue. */
142		case FTS_NS:
143			warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
144			rval = 1;
145			continue;
146		case FTS_SL:			/* Ignore. */
147		case FTS_SLNONE:
148			/*
149			 * The only symlinks that end up here are ones that
150			 * don't point to anything and ones that we found
151			 * doing a physical walk.
152			 */
153			continue;
154		default:
155			break;
156		}
157		if (oct) {
158			if (!chflags(p->fts_accpath, set))
159				continue;
160		} else {
161			p->fts_statp->st_flags |= set;
162			p->fts_statp->st_flags &= clear;
163			if (!chflags(p->fts_accpath, p->fts_statp->st_flags))
164				continue;
165		}
166		warn("%s", p->fts_path);
167		rval = 1;
168	}
169	if (errno)
170		err(1, "fts_read");
171	exit(rval);
172}
173
174void
175usage()
176{
177	(void)fprintf(stderr,
178	    "usage: chflags [-R [-H | -L | -P]] flags file ...\n");
179	exit(1);
180}
181