chflags.c revision 176976 
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: head/bin/chflags/chflags.c 176976 2008-03-09 12:10:24Z rwatson $");
44
45#include <sys/types.h>
46#include <sys/stat.h>
47
48#include <err.h>
49#include <errno.h>
50#include <fts.h>
51#include <stdio.h>
52#include <stdlib.h>
53#include <string.h>
54#include <unistd.h>
55
56void	usage(void);
57
58int
59main(int argc, char *argv[])
60{
61	FTS *ftsp;
62	FTSENT *p;
63	u_long clear, newflags, set;
64	long val;
65	int Hflag, Lflag, Rflag, fflag, hflag, vflag;
66	int ch, fts_options, oct, rval;
67	char *flags, *ep;
68	int (*change_flags)(const char *, unsigned long);
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		fts_options = FTS_PHYSICAL;
108		if (hflag)
109			errx(1, "the -R and -h options "
110			        "may not be specified together");
111		if (Hflag)
112			fts_options |= FTS_COMFOLLOW;
113		if (Lflag) {
114			fts_options &= ~FTS_PHYSICAL;
115			fts_options |= FTS_LOGICAL;
116		}
117	} else
118		fts_options = FTS_LOGICAL;
119
120	/* XXX: Why don't chflags and lchflags have compatible prototypes? */
121	if (hflag)
122		change_flags = (int (*)(const char *, unsigned long))lchflags;
123	else
124		change_flags = chflags;
125
126	flags = *argv;
127	if (*flags >= '0' && *flags <= '7') {
128		errno = 0;
129		val = strtol(flags, &ep, 8);
130		if (val < 0)
131			errno = ERANGE;
132		if (errno)
133                        err(1, "invalid flags: %s", flags);
134                if (*ep)
135                        errx(1, "invalid flags: %s", flags);
136		set = val;
137                oct = 1;
138	} else {
139		if (strtofflags(&flags, &set, &clear))
140                        errx(1, "invalid flag: %s", flags);
141		clear = ~clear;
142		oct = 0;
143	}
144
145	if ((ftsp = fts_open(++argv, fts_options , 0)) == NULL)
146		err(1, NULL);
147
148	for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
149		switch (p->fts_info) {
150		case FTS_D:	/* Change it at FTS_DP if we're recursive. */
151			if (!Rflag)
152				fts_set(ftsp, p, FTS_SKIP);
153			continue;
154		case FTS_DNR:			/* Warn, chflag, continue. */
155			warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
156			rval = 1;
157			break;
158		case FTS_ERR:			/* Warn, continue. */
159		case FTS_NS:
160			warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
161			rval = 1;
162			continue;
163		case FTS_SL:			/* Ignore. */
164		case FTS_SLNONE:
165			/*
166			 * The only symlinks that end up here are ones that
167			 * don't point to anything and ones that we found
168			 * doing a physical walk.
169			 */
170			if (!hflag)
171				continue;
172			/* FALLTHROUGH */
173		default:
174			break;
175		}
176		if (oct)
177			newflags = set;
178		else
179			newflags = (p->fts_statp->st_flags | set) & clear;
180		if (newflags == p->fts_statp->st_flags)
181			continue;
182		if ((*change_flags)(p->fts_accpath, newflags) && !fflag) {
183			warn("%s", p->fts_path);
184			rval = 1;
185		} else if (vflag) {
186			(void)printf("%s", p->fts_path);
187			if (vflag > 1)
188				(void)printf(": 0%lo -> 0%lo",
189				    (u_long)p->fts_statp->st_flags,
190				    newflags);
191			(void)printf("\n");
192		}
193	}
194	if (errno)
195		err(1, "fts_read");
196	exit(rval);
197}
198
199void
200usage(void)
201{
202	(void)fprintf(stderr,
203	    "usage: chflags [-fhv] [-R [-H | -L | -P]] flags file ...\n");
204	exit(1);
205}
206