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 1.9 2008/09/02 22:13:11 swildner 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, 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 = Rflag = fflag = hflag = vflag = 0; 66 while ((ch = getopt(argc, argv, "HLPRXfghorstuvwx")) != -1) 67 switch (ch) { 68 case 'H': 69 Hflag = 1; 70 Lflag = 0; 71 break; 72 case 'L': 73 Lflag = 1; 74 Hflag = 0; 75 break; 76 case 'P': 77 Hflag = Lflag = 0; 78 break; 79 case 'R': 80 Rflag = 1; 81 break; 82 case 'f': 83 fflag = 1; 84 break; 85 case 'h': 86 /* 87 * In System V (and probably POSIX.2) the -h option 88 * causes chmod to change the mode of the symbolic 89 * link. 4.4BSD's symbolic links didn't have modes, 90 * so it was an undocumented noop. In FreeBSD 3.0, 91 * lchmod(2) is introduced and this option does real 92 * work. 93 */ 94 hflag = 1; 95 break; 96 /* 97 * XXX 98 * "-[rwx]" are valid mode commands. If they are the entire 99 * argument, getopt has moved past them, so decrement optind. 100 * Regardless, we're done argument processing. 101 */ 102 case 'g': case 'o': case 'r': case 's': 103 case 't': case 'u': case 'w': case 'X': case 'x': 104 if (argv[optind - 1][0] == '-' && 105 argv[optind - 1][1] == ch && 106 argv[optind - 1][2] == '\0') 107 --optind; 108 goto done; 109 case 'v': 110 vflag = 1; 111 break; 112 default: 113 usage(); 114 } 115 done: argv += optind; 116 argc -= optind; 117 118 if (argc < 2) 119 usage(); 120 121 fts_options = FTS_PHYSICAL; 122 if (Rflag) { 123 if (hflag) 124 errx(1, 125 "the -R and -h options may not be specified together."); 126 if (Hflag) 127 fts_options |= FTS_COMFOLLOW; 128 if (Lflag) { 129 fts_options &= ~FTS_PHYSICAL; 130 fts_options |= FTS_LOGICAL; 131 } 132 } 133 134 if (hflag) 135 change_mode = lchmod; 136 else 137 change_mode = chmod; 138 139 mode = *argv; 140 errno = 0; 141 if ((set = setmode(mode)) == NULL) { 142 if (!errno) 143 errx(1, "invalid file mode: %s", mode); 144 else 145 /* malloc for setmode() failed */ 146 err(1, "setmode failed"); 147 } 148 149 if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL) 150 err(1, NULL); 151 for (rval = 0; (p = fts_read(ftsp)) != NULL;) { 152 switch (p->fts_info) { 153 case FTS_D: /* Change it at FTS_DP. */ 154 if (!Rflag) 155 fts_set(ftsp, p, FTS_SKIP); 156 continue; 157 case FTS_DNR: /* Warn, chmod, continue. */ 158 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 159 rval = 1; 160 break; 161 case FTS_ERR: /* Warn, continue. */ 162 case FTS_NS: 163 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 164 rval = 1; 165 continue; 166 case FTS_SL: /* Ignore. */ 167 case FTS_SLNONE: 168 /* 169 * The only symlinks that end up here are ones that 170 * don't point to anything and ones that we found 171 * doing a physical walk. 172 */ 173 if (!hflag) 174 continue; 175 /* else */ 176 /* FALLTHROUGH */ 177 default: 178 break; 179 } 180 newmode = getmode(set, p->fts_statp->st_mode); 181 if ((newmode & ALLPERMS) == (p->fts_statp->st_mode & ALLPERMS)) 182 continue; 183 if ((*change_mode)(p->fts_accpath, newmode) && !fflag) { 184 warn("%s", p->fts_path); 185 rval = 1; 186 } else { 187 if (vflag) 188 printf("%s\n", p->fts_accpath); 189 } 190 } 191 if (errno) 192 err(1, "fts_read"); 193 free(set); 194 exit(rval); 195 } 196 197 static void 198 usage(void) 199 { 200 fprintf(stderr, 201 "usage: chmod [-fhv] [-R [-H | -L | -P]] mode file ...\n"); 202 exit(1); 203 } 204