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 1.4 2003/09/28 14:39:13 hmp 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 int main (int, char **); 52 void usage (void); 53 54 int 55 main(int argc, char **argv) 56 { 57 FTS *ftsp; 58 FTSENT *p; 59 mode_t *set; 60 long val; 61 int oct, omode; 62 int Hflag, Lflag, Pflag, Rflag, ch, fflag, fts_options, hflag, rval; 63 int vflag; 64 char *ep, *mode; 65 int newmode; 66 int (*change_mode) (const char *, mode_t); 67 68 set = NULL; 69 omode = 0; 70 Hflag = Lflag = Pflag = Rflag = fflag = hflag = vflag = 0; 71 while ((ch = getopt(argc, argv, "HLPRXfghorstuvwx")) != -1) 72 switch (ch) { 73 case 'H': 74 Hflag = 1; 75 Lflag = Pflag = 0; 76 break; 77 case 'L': 78 Lflag = 1; 79 Hflag = Pflag = 0; 80 break; 81 case 'P': 82 Pflag = 1; 83 Hflag = Lflag = 0; 84 break; 85 case 'R': 86 Rflag = 1; 87 break; 88 case 'f': 89 fflag = 1; 90 break; 91 case 'h': 92 /* 93 * In System V (and probably POSIX.2) the -h option 94 * causes chmod to change the mode of the symbolic 95 * link. 4.4BSD's symbolic links didn't have modes, 96 * so it was an undocumented noop. In FreeBSD 3.0, 97 * lchmod(2) is introduced and this option does real 98 * work. 99 */ 100 hflag = 1; 101 break; 102 /* 103 * XXX 104 * "-[rwx]" are valid mode commands. If they are the entire 105 * argument, getopt has moved past them, so decrement optind. 106 * Regardless, we're done argument processing. 107 */ 108 case 'g': case 'o': case 'r': case 's': 109 case 't': case 'u': case 'w': case 'X': case 'x': 110 if (argv[optind - 1][0] == '-' && 111 argv[optind - 1][1] == ch && 112 argv[optind - 1][2] == '\0') 113 --optind; 114 goto done; 115 case 'v': 116 vflag = 1; 117 break; 118 case '?': 119 default: 120 usage(); 121 } 122 done: argv += optind; 123 argc -= optind; 124 125 if (argc < 2) 126 usage(); 127 128 fts_options = FTS_PHYSICAL; 129 if (Rflag) { 130 if (hflag) 131 errx(1, 132 "the -R and -h options may not be specified together."); 133 if (Hflag) 134 fts_options |= FTS_COMFOLLOW; 135 if (Lflag) { 136 fts_options &= ~FTS_PHYSICAL; 137 fts_options |= FTS_LOGICAL; 138 } 139 } 140 141 if (hflag) 142 change_mode = lchmod; 143 else 144 change_mode = chmod; 145 146 mode = *argv; 147 if (*mode >= '0' && *mode <= '7') { 148 errno = 0; 149 val = strtol(mode, &ep, 8); 150 if (val > INT_MAX || val < 0) 151 errno = ERANGE; 152 if (errno) 153 err(1, "invalid file mode: %s", mode); 154 if (*ep) 155 errx(1, "invalid file mode: %s", mode); 156 omode = val; 157 oct = 1; 158 } else { 159 if ((set = setmode(mode)) == NULL) 160 errx(1, "invalid file mode: %s", mode); 161 oct = 0; 162 } 163 164 if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL) 165 err(1, NULL); 166 for (rval = 0; (p = fts_read(ftsp)) != NULL;) { 167 switch (p->fts_info) { 168 case FTS_D: /* Change it at FTS_DP. */ 169 if (!Rflag) 170 fts_set(ftsp, p, FTS_SKIP); 171 continue; 172 case FTS_DNR: /* Warn, chmod, continue. */ 173 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 174 rval = 1; 175 break; 176 case FTS_ERR: /* Warn, continue. */ 177 case FTS_NS: 178 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 179 rval = 1; 180 continue; 181 case FTS_SL: /* Ignore. */ 182 case FTS_SLNONE: 183 /* 184 * The only symlinks that end up here are ones that 185 * don't point to anything and ones that we found 186 * doing a physical walk. 187 */ 188 if (!hflag) 189 continue; 190 /* else */ 191 /* FALLTHROUGH */ 192 default: 193 break; 194 } 195 newmode = oct ? omode : getmode(set, p->fts_statp->st_mode); 196 if ((newmode & ALLPERMS) == (p->fts_statp->st_mode & ALLPERMS)) 197 continue; 198 if ((*change_mode)(p->fts_accpath, newmode) && !fflag) { 199 warn("%s", p->fts_path); 200 rval = 1; 201 } else { 202 if (vflag) 203 (void)printf("%s\n", p->fts_accpath); 204 } 205 } 206 if (errno) 207 err(1, "fts_read"); 208 free(set); 209 exit(rval); 210 } 211 212 void 213 usage() 214 { 215 (void)fprintf(stderr, 216 "usage: chmod [-fhv] [-R [-H | -L | -P]] mode file ...\n"); 217 exit(1); 218 } 219