1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1992, 1993, 1994
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#if 0
33#ifndef lint
34static const char copyright[] =
35"@(#) Copyright (c) 1992, 1993, 1994\n\
36	The Regents of the University of California.  All rights reserved.\n";
37#endif
38
39#ifndef lint
40static char sccsid[] = "@(#)chflags.c	8.5 (Berkeley) 4/1/94";
41#endif
42#endif
43
44#include <sys/cdefs.h>
45__FBSDID("$FreeBSD$");
46
47#include <sys/types.h>
48#include <sys/stat.h>
49
50#include <err.h>
51#include <errno.h>
52#include <fcntl.h>
53#include <fts.h>
54#include <signal.h>
55#include <stdio.h>
56#include <stdlib.h>
57#include <string.h>
58#include <unistd.h>
59
60static volatile sig_atomic_t siginfo;
61
62static void usage(void);
63
64static void
65siginfo_handler(int sig __unused)
66{
67
68	siginfo = 1;
69}
70
71int
72main(int argc, char *argv[])
73{
74	FTS *ftsp;
75	FTSENT *p;
76	u_long clear, newflags, set;
77	long val;
78	int Hflag, Lflag, Rflag, fflag, hflag, vflag, xflag;
79	int ch, fts_options, oct, rval;
80	char *flags, *ep;
81
82	Hflag = Lflag = Rflag = fflag = hflag = vflag = xflag = 0;
83	while ((ch = getopt(argc, argv, "HLPRfhvx")) != -1)
84		switch (ch) {
85		case 'H':
86			Hflag = 1;
87			Lflag = 0;
88			break;
89		case 'L':
90			Lflag = 1;
91			Hflag = 0;
92			break;
93		case 'P':
94			Hflag = Lflag = 0;
95			break;
96		case 'R':
97			Rflag = 1;
98			break;
99		case 'f':
100			fflag = 1;
101			break;
102		case 'h':
103			hflag = 1;
104			break;
105		case 'v':
106			vflag++;
107			break;
108		case 'x':
109			xflag = 1;
110			break;
111		case '?':
112		default:
113			usage();
114		}
115	argv += optind;
116	argc -= optind;
117
118	if (argc < 2)
119		usage();
120
121	(void)signal(SIGINFO, siginfo_handler);
122
123	if (Rflag) {
124		if (hflag)
125			errx(1, "the -R and -h options may not be "
126			    "specified together.");
127		if (Lflag) {
128			fts_options = FTS_LOGICAL;
129		} else {
130			fts_options = FTS_PHYSICAL;
131
132			if (Hflag) {
133				fts_options |= FTS_COMFOLLOW;
134			}
135		}
136	} else if (hflag) {
137		fts_options = FTS_PHYSICAL;
138	} else {
139		fts_options = FTS_LOGICAL;
140	}
141	if (xflag)
142		fts_options |= FTS_XDEV;
143
144	flags = *argv;
145	if (*flags >= '0' && *flags <= '7') {
146		errno = 0;
147		val = strtol(flags, &ep, 8);
148		if (val < 0)
149			errno = ERANGE;
150		if (errno)
151                        err(1, "invalid flags: %s", flags);
152                if (*ep)
153                        errx(1, "invalid flags: %s", flags);
154		set = val;
155                oct = 1;
156	} else {
157		if (strtofflags(&flags, &set, &clear))
158                        errx(1, "invalid flag: %s", flags);
159		clear = ~clear;
160		oct = 0;
161	}
162
163	if ((ftsp = fts_open(++argv, fts_options , 0)) == NULL)
164		err(1, NULL);
165
166	for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
167		int atflag;
168
169		if ((fts_options & FTS_LOGICAL) ||
170		    ((fts_options & FTS_COMFOLLOW) &&
171		    p->fts_level == FTS_ROOTLEVEL))
172			atflag = 0;
173		else
174			atflag = AT_SYMLINK_NOFOLLOW;
175
176		switch (p->fts_info) {
177		case FTS_D:	/* Change it at FTS_DP if we're recursive. */
178			if (!Rflag)
179				fts_set(ftsp, p, FTS_SKIP);
180			continue;
181		case FTS_DNR:			/* Warn, chflags. */
182			warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
183			rval = 1;
184			break;
185		case FTS_ERR:			/* Warn, continue. */
186		case FTS_NS:
187			warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
188			rval = 1;
189			continue;
190		default:
191			break;
192		}
193		if (oct)
194			newflags = set;
195		else
196			newflags = (p->fts_statp->st_flags | set) & clear;
197		if (newflags == p->fts_statp->st_flags)
198			continue;
199		if (chflagsat(AT_FDCWD, p->fts_accpath, newflags,
200		    atflag) == -1 && !fflag) {
201			warn("%s", p->fts_path);
202			rval = 1;
203		} else if (vflag || siginfo) {
204			(void)printf("%s", p->fts_path);
205			if (vflag > 1 || siginfo)
206				(void)printf(": 0%lo -> 0%lo",
207				    (u_long)p->fts_statp->st_flags,
208				    newflags);
209			(void)printf("\n");
210			siginfo = 0;
211		}
212	}
213	if (errno)
214		err(1, "fts_read");
215	exit(rval);
216}
217
218static void
219usage(void)
220{
221	(void)fprintf(stderr,
222	    "usage: chflags [-fhvx] [-R [-H | -L | -P]] flags file ...\n");
223	exit(1);
224}
225