xref: /freebsd/bin/chflags/chflags.c (revision 41466b50c1d5bfd1cf6adaae547a579a75d7c04e)
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
35 static const 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
41 #if 0
42 static char sccsid[] = "@(#)chflags.c	8.5 (Berkeley) 4/1/94";
43 #endif
44 static const char rcsid[] =
45 	"$FreeBSD$";
46 #endif /* not lint */
47 
48 #include <sys/types.h>
49 #include <sys/stat.h>
50 
51 #include <err.h>
52 #include <errno.h>
53 #include <fts.h>
54 #include <stdio.h>
55 #include <stdlib.h>
56 #include <string.h>
57 #include <unistd.h>
58 
59 int	main __P((int, char *[]));
60 void	usage __P((void));
61 
62 int
63 main(argc, argv)
64 	int argc;
65 	char *argv[];
66 {
67 	FTS *ftsp;
68 	FTSENT *p;
69 	u_long clear, set;
70 	long val;
71 	int Hflag, Lflag, Pflag, Rflag, ch, fts_options, oct, rval;
72 	char *flags, *ep;
73 
74 	Hflag = Lflag = Pflag = Rflag = 0;
75 	while ((ch = getopt(argc, argv, "HLPR")) != -1)
76 		switch (ch) {
77 		case 'H':
78 			Hflag = 1;
79 			Lflag = Pflag = 0;
80 			break;
81 		case 'L':
82 			Lflag = 1;
83 			Hflag = Pflag = 0;
84 			break;
85 		case 'P':
86 			Pflag = 1;
87 			Hflag = Lflag = 0;
88 			break;
89 		case 'R':
90 			Rflag = 1;
91 			break;
92 		case '?':
93 		default:
94 			usage();
95 		}
96 	argv += optind;
97 	argc -= optind;
98 
99 	if (argc < 2)
100 		usage();
101 
102 	if (Rflag) {
103 		fts_options = FTS_PHYSICAL;
104 		if (Hflag)
105 			fts_options |= FTS_COMFOLLOW;
106 		if (Lflag) {
107 			fts_options &= ~FTS_PHYSICAL;
108 			fts_options |= FTS_LOGICAL;
109 		}
110 	} else
111 		fts_options = FTS_LOGICAL;
112 
113 	flags = *argv;
114 	if (*flags >= '0' && *flags <= '7') {
115 		errno = 0;
116 		val = strtol(flags, &ep, 8);
117 		if (val < 0)
118 			errno = ERANGE;
119 		if (errno)
120                         err(1, "invalid flags: %s", flags);
121                 if (*ep)
122                         errx(1, "invalid flags: %s", flags);
123 		set = val;
124                 oct = 1;
125 	} else {
126 		if (strtofflags(&flags, &set, &clear))
127                         errx(1, "invalid flag: %s", flags);
128 		clear = ~clear;
129 		oct = 0;
130 	}
131 
132 	if ((ftsp = fts_open(++argv, fts_options , 0)) == NULL)
133 		err(1, NULL);
134 
135 	for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
136 		switch (p->fts_info) {
137 		case FTS_D:
138 			if (Rflag)		/* Change it at FTS_DP. */
139 				continue;
140 			fts_set(ftsp, p, FTS_SKIP);
141 			break;
142 		case FTS_DNR:			/* Warn, chflag, continue. */
143 			warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
144 			rval = 1;
145 			break;
146 		case FTS_ERR:			/* Warn, continue. */
147 		case FTS_NS:
148 			warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
149 			rval = 1;
150 			continue;
151 		case FTS_SL:			/* Ignore. */
152 		case FTS_SLNONE:
153 			/*
154 			 * The only symlinks that end up here are ones that
155 			 * don't point to anything and ones that we found
156 			 * doing a physical walk.
157 			 */
158 			continue;
159 		default:
160 			break;
161 		}
162 		if (oct) {
163 			if (!chflags(p->fts_accpath, set))
164 				continue;
165 		} else {
166 			p->fts_statp->st_flags |= set;
167 			p->fts_statp->st_flags &= clear;
168 			if (!chflags(p->fts_accpath, (u_long)p->fts_statp->st_flags))
169 				continue;
170 		}
171 		warn("%s", p->fts_path);
172 		rval = 1;
173 	}
174 	if (errno)
175 		err(1, "fts_read");
176 	exit(rval);
177 }
178 
179 void
180 usage()
181 {
182 	(void)fprintf(stderr,
183 	    "usage: chflags [-R [-H | -L | -P]] flags file ...\n");
184 	exit(1);
185 }
186