chmod.c revision 1.36.8.1
1 /* $NetBSD: chmod.c,v 1.36.8.1 2012/11/20 02:57:28 tls 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 41 static char sccsid[] = "@(#)chmod.c 8.8 (Berkeley) 4/1/94"; 42 #else 43 __RCSID("$NetBSD: chmod.c,v 1.36.8.1 2012/11/20 02:57:28 tls 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 #include <getopt.h> 61 62 __dead static void usage(void); 63 64 struct option chmod_longopts[] = { 65 { "reference", required_argument, 0, 66 1 }, 67 { NULL, 0, 0, 68 0 }, 69 }; 70 71 int 72 main(int argc, char *argv[]) 73 { 74 FTS *ftsp; 75 FTSENT *p; 76 void *set; 77 mode_t mval; 78 int Hflag, Lflag, Rflag, ch, fflag, fts_options, hflag, rval; 79 char *mode, *reference; 80 int (*change_mode)(const char *, mode_t); 81 82 setprogname(argv[0]); 83 (void)setlocale(LC_ALL, ""); 84 85 Hflag = Lflag = Rflag = fflag = hflag = 0; 86 reference = NULL; 87 while ((ch = getopt_long(argc, argv, "HLPRXfghorstuwx", 88 chmod_longopts, NULL)) != -1) 89 switch (ch) { 90 case 1: 91 reference = optarg; 92 break; 93 case 'H': 94 Hflag = 1; 95 Lflag = 0; 96 break; 97 case 'L': 98 Lflag = 1; 99 Hflag = 0; 100 break; 101 case 'P': 102 Hflag = Lflag = 0; 103 break; 104 case 'R': 105 Rflag = 1; 106 break; 107 case 'f': 108 fflag = 1; 109 break; 110 case 'h': 111 /* 112 * In System V the -h option causes chmod to 113 * change the mode of the symbolic link. 114 * 4.4BSD's symbolic links didn't have modes, 115 * so it was an undocumented noop. In NetBSD 116 * 1.3, lchmod(2) is introduced and this 117 * option does real work. 118 */ 119 hflag = 1; 120 break; 121 /* 122 * XXX 123 * "-[rwx]" are valid mode commands. If they are the entire 124 * argument, getopt has moved past them, so decrement optind. 125 * Regardless, we're done argument processing. 126 */ 127 case 'g': case 'o': case 'r': case 's': 128 case 't': case 'u': case 'w': case 'X': case 'x': 129 if (argv[optind - 1][0] == '-' && 130 argv[optind - 1][1] == ch && 131 argv[optind - 1][2] == '\0') 132 --optind; 133 goto done; 134 case '?': 135 default: 136 usage(); 137 } 138 done: argv += optind; 139 argc -= optind; 140 141 if (argc == 0 || (argc == 1 && reference == NULL)) 142 usage(); 143 144 fts_options = FTS_PHYSICAL; 145 if (Rflag) { 146 if (hflag) { 147 errx(EXIT_FAILURE, 148 "the -R and -h options may not be specified together."); 149 /* NOTREACHED */ 150 } 151 if (Hflag) 152 fts_options |= FTS_COMFOLLOW; 153 if (Lflag) { 154 fts_options &= ~FTS_PHYSICAL; 155 fts_options |= FTS_LOGICAL; 156 } 157 } else if (!hflag) 158 fts_options |= FTS_COMFOLLOW; 159 if (hflag) 160 change_mode = lchmod; 161 else 162 change_mode = chmod; 163 164 if (reference == NULL) { 165 mode = *argv++; 166 if ((set = setmode(mode)) == NULL) { 167 err(EXIT_FAILURE, "Cannot set file mode `%s'", mode); 168 /* NOTREACHED */ 169 } 170 mval = 0; 171 } else { 172 struct stat st; 173 174 if (stat(reference, &st) == -1) 175 err(EXIT_FAILURE, "Cannot stat `%s'", reference); 176 mval = st.st_mode; 177 set = NULL; 178 } 179 180 if ((ftsp = fts_open(argv, fts_options, 0)) == NULL) { 181 err(EXIT_FAILURE, "fts_open"); 182 /* NOTREACHED */ 183 } 184 for (rval = 0; (p = fts_read(ftsp)) != NULL;) { 185 switch (p->fts_info) { 186 case FTS_D: 187 if (!Rflag) 188 (void)fts_set(ftsp, p, FTS_SKIP); 189 break; 190 case FTS_DNR: /* Warn, chmod, continue. */ 191 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 192 rval = 1; 193 break; 194 case FTS_DP: /* Already changed at FTS_D. */ 195 continue; 196 case FTS_ERR: /* Warn, continue. */ 197 case FTS_NS: 198 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 199 rval = 1; 200 continue; 201 case FTS_SL: /* Ignore. */ 202 case FTS_SLNONE: 203 /* 204 * The only symlinks that end up here are ones that 205 * don't point to anything and ones that we found 206 * doing a physical walk. 207 */ 208 if (!hflag) 209 continue; 210 /* else */ 211 /* FALLTHROUGH */ 212 default: 213 break; 214 } 215 if ((*change_mode)(p->fts_accpath, 216 set ? getmode(set, p->fts_statp->st_mode) : mval) 217 && !fflag) { 218 warn("%s", p->fts_path); 219 rval = 1; 220 } 221 } 222 if (errno) { 223 err(EXIT_FAILURE, "fts_read"); 224 /* NOTREACHED */ 225 } 226 exit(rval); 227 /* NOTREACHED */ 228 } 229 230 static void 231 usage(void) 232 { 233 (void)fprintf(stderr, 234 "Usage: %s [-R [-H | -L | -P]] [-fh] mode file ...\n" 235 "\t%s [-R [-H | -L | -P]] [-fh] --reference=rfile file ...\n", 236 getprogname(), getprogname()); 237 exit(1); 238 /* NOTREACHED */ 239 } 240
Indexes created Tue Sep 30 17:09:57 GMT 2025