1 /* 2 * Copyright (c) 1989, 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 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#) Copyright (c) 1989, 1993, 1994 The Regents of the University of California. All rights reserved. 34 * @(#)chmod.c 8.8 (Berkeley) 4/1/94 35 * $FreeBSD: src/bin/chmod/chmod.c,v 1.16.2.6 2002/10/18 01:36:38 trhodes Exp $ 36 * $DragonFly: src/bin/chmod/chmod.c,v 1.8 2004/10/31 16:18:37 liamfoy Exp $ 37 */ 38 39 #include <sys/types.h> 40 #include <sys/stat.h> 41 42 #include <err.h> 43 #include <errno.h> 44 #include <fts.h> 45 #include <limits.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include <string.h> 49 #include <unistd.h> 50 51 static void usage (void); 52 53 int 54 main(int argc, char **argv) 55 { 56 FTS *ftsp; 57 FTSENT *p; 58 mode_t newmode; 59 void *set; 60 int Hflag, Lflag, Pflag, Rflag, ch, fflag; 61 int fts_options, hflag, rval, vflag; 62 char *mode; 63 int (*change_mode) (const char *, mode_t); 64 65 Hflag = Lflag = Pflag = Rflag = fflag = hflag = vflag = 0; 66 while ((ch = getopt(argc, argv, "HLPRXfghorstuvwx")) != -1) 67 switch (ch) { 68 case 'H': 69 Hflag = 1; 70 Lflag = Pflag = 0; 71 break; 72 case 'L': 73 Lflag = 1; 74 Hflag = Pflag = 0; 75 break; 76 case 'P': 77 Pflag = 1; 78 Hflag = Lflag = 0; 79 break; 80 case 'R': 81 Rflag = 1; 82 break; 83 case 'f': 84 fflag = 1; 85 break; 86 case 'h': 87 /* 88 * In System V (and probably POSIX.2) the -h option 89 * causes chmod to change the mode of the symbolic 90 * link. 4.4BSD's symbolic links didn't have modes, 91 * so it was an undocumented noop. In FreeBSD 3.0, 92 * lchmod(2) is introduced and this option does real 93 * work. 94 */ 95 hflag = 1; 96 break; 97 /* 98 * XXX 99 * "-[rwx]" are valid mode commands. If they are the entire 100 * argument, getopt has moved past them, so decrement optind. 101 * Regardless, we're done argument processing. 102 */ 103 case 'g': case 'o': case 'r': case 's': 104 case 't': case 'u': case 'w': case 'X': case 'x': 105 if (argv[optind - 1][0] == '-' && 106 argv[optind - 1][1] == ch && 107 argv[optind - 1][2] == '\0') 108 --optind; 109 goto done; 110 case 'v': 111 vflag = 1; 112 break; 113 default: 114 usage(); 115 } 116 done: argv += optind; 117 argc -= optind; 118 119 if (argc < 2) 120 usage(); 121 122 fts_options = FTS_PHYSICAL; 123 if (Rflag) { 124 if (hflag) 125 errx(1, 126 "the -R and -h options may not be specified together."); 127 if (Hflag) 128 fts_options |= FTS_COMFOLLOW; 129 if (Lflag) { 130 fts_options &= ~FTS_PHYSICAL; 131 fts_options |= FTS_LOGICAL; 132 } 133 } 134 135 if (hflag) 136 change_mode = lchmod; 137 else 138 change_mode = chmod; 139 140 mode = *argv; 141 errno = 0; 142 if ((set = setmode(mode)) == NULL) { 143 if (!errno) 144 errx(1, "invalid file mode: %s", mode); 145 else 146 /* malloc for setmode() failed */ 147 err(1, "setmode failed"); 148 } 149 150 if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL) 151 err(1, NULL); 152 for (rval = 0; (p = fts_read(ftsp)) != NULL;) { 153 switch (p->fts_info) { 154 case FTS_D: /* Change it at FTS_DP. */ 155 if (!Rflag) 156 fts_set(ftsp, p, FTS_SKIP); 157 continue; 158 case FTS_DNR: /* Warn, chmod, continue. */ 159 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 160 rval = 1; 161 break; 162 case FTS_ERR: /* Warn, continue. */ 163 case FTS_NS: 164 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 165 rval = 1; 166 continue; 167 case FTS_SL: /* Ignore. */ 168 case FTS_SLNONE: 169 /* 170 * The only symlinks that end up here are ones that 171 * don't point to anything and ones that we found 172 * doing a physical walk. 173 */ 174 if (!hflag) 175 continue; 176 /* else */ 177 /* FALLTHROUGH */ 178 default: 179 break; 180 } 181 newmode = getmode(set, p->fts_statp->st_mode); 182 if ((newmode & ALLPERMS) == (p->fts_statp->st_mode & ALLPERMS)) 183 continue; 184 if ((*change_mode)(p->fts_accpath, newmode) && !fflag) { 185 warn("%s", p->fts_path); 186 rval = 1; 187 } else { 188 if (vflag) 189 printf("%s\n", p->fts_accpath); 190 } 191 } 192 if (errno) 193 err(1, "fts_read"); 194 free(set); 195 exit(rval); 196 } 197 198 static void 199 usage(void) 200 { 201 fprintf(stderr, 202 "usage: chmod [-fhv] [-R [-H | -L | -P]] mode file ...\n"); 203 exit(1); 204 } 205