1/* $NetBSD: chmod.c,v 1.35 2010/01/22 05:41:36 snj Exp $ */ 2 3/* 4 * Copyright (c) 1989, 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#include <sys/cdefs.h> 33#ifndef lint 34__COPYRIGHT( 35"@(#) Copyright (c) 1989, 1993, 1994\ 36 The Regents of the University of California. All rights reserved."); 37#endif /* not lint */ 38 39#ifndef lint 40#if 0 41static char sccsid[] = "@(#)chmod.c 8.8 (Berkeley) 4/1/94"; 42#else 43__RCSID("$NetBSD: chmod.c,v 1.35 2010/01/22 05:41:36 snj Exp $"); 44#endif 45#endif /* not lint */ 46 47#include <sys/param.h> 48#include <sys/stat.h> 49#include <sys/types.h> 50 51#include <err.h> 52#include <errno.h> 53#include <fts.h> 54#include <limits.h> 55#include <locale.h> 56#include <stdio.h> 57#include <stdlib.h> 58#include <string.h> 59#include <unistd.h> 60 61__dead static void usage(void); 62 63int 64main(int argc, char *argv[]) 65{ 66 FTS *ftsp; 67 FTSENT *p; 68 mode_t *set; 69 int Hflag, Lflag, Rflag, ch, fflag, fts_options, hflag, rval; 70 char *mode; 71 int (*change_mode)(const char *, mode_t); 72 73 setprogname(argv[0]); 74 (void)setlocale(LC_ALL, ""); 75 76 Hflag = Lflag = Rflag = fflag = hflag = 0; 77 while ((ch = getopt(argc, argv, "HLPRXfghorstuwx")) != -1) 78 switch (ch) { 79 case 'H': 80 Hflag = 1; 81 Lflag = 0; 82 break; 83 case 'L': 84 Lflag = 1; 85 Hflag = 0; 86 break; 87 case 'P': 88 Hflag = Lflag = 0; 89 break; 90 case 'R': 91 Rflag = 1; 92 break; 93 case 'f': 94 fflag = 1; 95 break; 96 case 'h': 97 /* 98 * In System V the -h option causes chmod to 99 * change the mode of the symbolic link. 100 * 4.4BSD's symbolic links didn't have modes, 101 * so it was an undocumented noop. In NetBSD 102 * 1.3, lchmod(2) is introduced and this 103 * option does real work. 104 */ 105 hflag = 1; 106 break; 107 /* 108 * XXX 109 * "-[rwx]" are valid mode commands. If they are the entire 110 * argument, getopt has moved past them, so decrement optind. 111 * Regardless, we're done argument processing. 112 */ 113 case 'g': case 'o': case 'r': case 's': 114 case 't': case 'u': case 'w': case 'X': case 'x': 115 if (argv[optind - 1][0] == '-' && 116 argv[optind - 1][1] == ch && 117 argv[optind - 1][2] == '\0') 118 --optind; 119 goto done; 120 case '?': 121 default: 122 usage(); 123 } 124done: argv += optind; 125 argc -= optind; 126 127 if (argc < 2) 128 usage(); 129 130 fts_options = FTS_PHYSICAL; 131 if (Rflag) { 132 if (hflag) { 133 errx(EXIT_FAILURE, 134 "the -R and -h options may not be specified together."); 135 /* NOTREACHED */ 136 } 137 if (Hflag) 138 fts_options |= FTS_COMFOLLOW; 139 if (Lflag) { 140 fts_options &= ~FTS_PHYSICAL; 141 fts_options |= FTS_LOGICAL; 142 } 143 } else if (!hflag) 144 fts_options |= FTS_COMFOLLOW; 145 if (hflag) 146 change_mode = lchmod; 147 else 148 change_mode = chmod; 149 150 mode = *argv; 151 if ((set = setmode(mode)) == NULL) { 152 err(EXIT_FAILURE, "Cannot set file mode `%s'", mode); 153 /* NOTREACHED */ 154 } 155 156 if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL) { 157 err(EXIT_FAILURE, "fts_open"); 158 /* NOTREACHED */ 159 } 160 for (rval = 0; (p = fts_read(ftsp)) != NULL;) { 161 switch (p->fts_info) { 162 case FTS_D: 163 if (!Rflag) 164 (void)fts_set(ftsp, p, FTS_SKIP); 165 break; 166 case FTS_DNR: /* Warn, chmod, continue. */ 167 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 168 rval = 1; 169 break; 170 case FTS_DP: /* Already changed at FTS_D. */ 171 continue; 172 case FTS_ERR: /* Warn, continue. */ 173 case FTS_NS: 174 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 175 rval = 1; 176 continue; 177 case FTS_SL: /* Ignore. */ 178 case FTS_SLNONE: 179 /* 180 * The only symlinks that end up here are ones that 181 * don't point to anything and ones that we found 182 * doing a physical walk. 183 */ 184 if (!hflag) 185 continue; 186 /* else */ 187 /* FALLTHROUGH */ 188 default: 189 break; 190 } 191 if ((*change_mode)(p->fts_accpath, 192 getmode(set, p->fts_statp->st_mode)) && !fflag) { 193 warn("%s", p->fts_path); 194 rval = 1; 195 } 196 } 197 if (errno) { 198 err(EXIT_FAILURE, "fts_read"); 199 /* NOTREACHED */ 200 } 201 exit(rval); 202 /* NOTREACHED */ 203} 204 205static void 206usage(void) 207{ 208 (void)fprintf(stderr, 209 "usage: %s [-R [-H | -L | -P]] [-fh] mode file ...\n", 210 getprogname()); 211 exit(1); 212 /* NOTREACHED */ 213} 214