chflags.c revision 283875 
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 * 4. Neither the name of the University nor the names of its contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#if 0
31#ifndef lint
32static const char copyright[] =
33"@(#) Copyright (c) 1992, 1993, 1994\n\
34	The Regents of the University of California.  All rights reserved.\n";
35#endif
36
37#ifndef lint
38static char sccsid[] = "@(#)chflags.c	8.5 (Berkeley) 4/1/94";
39#endif
40#endif
41
42#include <sys/cdefs.h>
43__FBSDID("$FreeBSD: stable/10/bin/chflags/chflags.c 283875 2015-06-01 09:04:57Z smh $");
44
45#include <sys/types.h>
46#include <sys/stat.h>
47
48#include <err.h>
49#include <errno.h>
50#include <fcntl.h>
51#include <fts.h>
52#include <stdio.h>
53#include <stdlib.h>
54#include <string.h>
55#include <unistd.h>
56
57static void usage(void);
58
59int
60main(int argc, char *argv[])
61{
62	FTS *ftsp;
63	FTSENT *p;
64	u_long clear, newflags, set;
65	long val;
66	int Hflag, Lflag, Rflag, fflag, hflag, vflag;
67	int ch, fts_options, oct, rval;
68	char *flags, *ep;
69
70	Hflag = Lflag = Rflag = fflag = hflag = vflag = 0;
71	while ((ch = getopt(argc, argv, "HLPRfhv")) != -1)
72		switch (ch) {
73		case 'H':
74			Hflag = 1;
75			Lflag = 0;
76			break;
77		case 'L':
78			Lflag = 1;
79			Hflag = 0;
80			break;
81		case 'P':
82			Hflag = Lflag = 0;
83			break;
84		case 'R':
85			Rflag = 1;
86			break;
87		case 'f':
88			fflag = 1;
89			break;
90		case 'h':
91			hflag = 1;
92			break;
93		case 'v':
94			vflag++;
95			break;
96		case '?':
97		default:
98			usage();
99		}
100	argv += optind;
101	argc -= optind;
102
103	if (argc < 2)
104		usage();
105
106	if (Rflag) {
107		if (hflag)
108			errx(1, "the -R and -h options may not be "
109			    "specified together.");
110		if (Lflag) {
111			fts_options = FTS_LOGICAL;
112		} else {
113			fts_options = FTS_PHYSICAL;
114
115			if (Hflag) {
116				fts_options |= FTS_COMFOLLOW;
117			}
118		}
119	} else if (hflag) {
120		fts_options = FTS_PHYSICAL;
121	} else {
122		fts_options = FTS_LOGICAL;
123	}
124
125	flags = *argv;
126	if (*flags >= '0' && *flags <= '7') {
127		errno = 0;
128		val = strtol(flags, &ep, 8);
129		if (val < 0)
130			errno = ERANGE;
131		if (errno)
132                        err(1, "invalid flags: %s", flags);
133                if (*ep)
134                        errx(1, "invalid flags: %s", flags);
135		set = val;
136                oct = 1;
137	} else {
138		if (strtofflags(&flags, &set, &clear))
139                        errx(1, "invalid flag: %s", flags);
140		clear = ~clear;
141		oct = 0;
142	}
143
144	if ((ftsp = fts_open(++argv, fts_options , 0)) == NULL)
145		err(1, NULL);
146
147	for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
148		int atflag;
149
150		if ((fts_options & FTS_LOGICAL) ||
151		    ((fts_options & FTS_COMFOLLOW) &&
152		    p->fts_level == FTS_ROOTLEVEL))
153			atflag = 0;
154		else
155			atflag = AT_SYMLINK_NOFOLLOW;
156
157		switch (p->fts_info) {
158		case FTS_D:	/* Change it at FTS_DP if we're recursive. */
159			if (!Rflag)
160				fts_set(ftsp, p, FTS_SKIP);
161			continue;
162		case FTS_DNR:			/* Warn, chflags. */
163			warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
164			rval = 1;
165			break;
166		case FTS_ERR:			/* Warn, continue. */
167		case FTS_NS:
168			warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
169			rval = 1;
170			continue;
171		default:
172			break;
173		}
174		if (oct)
175			newflags = set;
176		else
177			newflags = (p->fts_statp->st_flags | set) & clear;
178		if (newflags == p->fts_statp->st_flags)
179			continue;
180		if (chflagsat(AT_FDCWD, p->fts_accpath, newflags,
181		    atflag) == -1 && !fflag) {
182			warn("%s", p->fts_path);
183			rval = 1;
184		} else if (vflag) {
185			(void)printf("%s", p->fts_path);
186			if (vflag > 1)
187				(void)printf(": 0%lo -> 0%lo",
188				    (u_long)p->fts_statp->st_flags,
189				    newflags);
190			(void)printf("\n");
191		}
192	}
193	if (errno)
194		err(1, "fts_read");
195	exit(rval);
196}
197
198static void
199usage(void)
200{
201	(void)fprintf(stderr,
202	    "usage: chflags [-fhv] [-R [-H | -L | -P]] flags file ...\n");
203	exit(1);
204}
205