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 34 #ifndef lint 35 static char const copyright[] = 36 "@(#) Copyright (c) 1989, 1993, 1994\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)chmod.c 8.8 (Berkeley) 4/1/94"; 43 #endif 44 static const char rcsid[] = 45 "$FreeBSD$"; 46 #endif /* not lint */ 47 48 #include <sys/types.h> 49 #include <sys/stat.h> 50 51 #include <err.h> 52 #include <errno.h> 53 #include <fts.h> 54 #include <limits.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <string.h> 58 #include <unistd.h> 59 60 void usage __P((void)); 61 62 int 63 main(argc, argv) 64 int argc; 65 char *argv[]; 66 { 67 FTS *ftsp; 68 FTSENT *p; 69 mode_t *set; 70 long val; 71 int oct, omode; 72 int Hflag, Lflag, Pflag, Rflag, ch, fflag, fts_options, hflag, rval; 73 char *ep, *mode; 74 75 set = NULL; 76 omode = 0; 77 Hflag = Lflag = Pflag = Rflag = fflag = hflag = 0; 78 while ((ch = getopt(argc, argv, "HLPRXfgorstuwx")) != -1) 79 switch (ch) { 80 case 'H': 81 Hflag = 1; 82 Lflag = Pflag = 0; 83 break; 84 case 'L': 85 Lflag = 1; 86 Hflag = Pflag = 0; 87 break; 88 case 'P': 89 Pflag = 1; 90 Hflag = Lflag = 0; 91 break; 92 case 'R': 93 Rflag = 1; 94 break; 95 case 'f': 96 fflag = 1; 97 break; 98 case 'h': 99 /* 100 * In System V (and probably POSIX.2) the -h option 101 * causes chmod to change the mode of the symbolic 102 * link. 4.4BSD's symbolic links don't have modes, 103 * so it's an undocumented noop. Do syntax checking, 104 * though. 105 */ 106 hflag = 1; 107 break; 108 /* 109 * XXX 110 * "-[rwx]" are valid mode commands. If they are the entire 111 * argument, getopt has moved past them, so decrement optind. 112 * Regardless, we're done argument processing. 113 */ 114 case 'g': case 'o': case 'r': case 's': 115 case 't': case 'u': case 'w': case 'X': case 'x': 116 if (argv[optind - 1][0] == '-' && 117 argv[optind - 1][1] == ch && 118 argv[optind - 1][2] == '\0') 119 --optind; 120 goto done; 121 case '?': 122 default: 123 usage(); 124 } 125 done: argv += optind; 126 argc -= optind; 127 128 if (argc < 2) 129 usage(); 130 131 fts_options = FTS_PHYSICAL; 132 if (Rflag) { 133 if (hflag) 134 errx(1, 135 "the -R and -h options may not be specified together."); 136 if (Hflag) 137 fts_options |= FTS_COMFOLLOW; 138 if (Lflag) { 139 fts_options &= ~FTS_PHYSICAL; 140 fts_options |= FTS_LOGICAL; 141 } 142 } 143 144 mode = *argv; 145 if (*mode >= '0' && *mode <= '7') { 146 errno = 0; 147 val = strtol(mode, &ep, 8); 148 if (val > INT_MAX || val < 0) 149 errno = ERANGE; 150 if (errno) 151 err(1, "invalid file mode: %s", mode); 152 if (*ep) 153 errx(1, "invalid file mode: %s", mode); 154 omode = val; 155 oct = 1; 156 } else { 157 if ((set = setmode(mode)) == NULL) 158 errx(1, "invalid file mode: %s", mode); 159 oct = 0; 160 } 161 162 if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL) 163 err(1, NULL); 164 for (rval = 0; (p = fts_read(ftsp)) != NULL;) { 165 switch (p->fts_info) { 166 case FTS_D: /* Change it at FTS_DP. */ 167 if (!Rflag) 168 fts_set(ftsp, p, FTS_SKIP); 169 continue; 170 case FTS_DNR: /* Warn, chmod, continue. */ 171 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 172 rval = 1; 173 break; 174 case FTS_ERR: /* Warn, continue. */ 175 case FTS_NS: 176 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 177 rval = 1; 178 continue; 179 case FTS_SL: /* Ignore. */ 180 case FTS_SLNONE: 181 /* 182 * The only symlinks that end up here are ones that 183 * don't point to anything and ones that we found 184 * doing a physical walk. 185 */ 186 continue; 187 default: 188 break; 189 } 190 if (chmod(p->fts_accpath, oct ? omode : 191 getmode(set, p->fts_statp->st_mode)) && !fflag) { 192 warn(p->fts_path); 193 rval = 1; 194 } 195 } 196 if (errno) 197 err(1, "fts_read"); 198 free(set); 199 exit(rval); 200 } 201 202 void 203 usage() 204 { 205 (void)fprintf(stderr, 206 "usage: chmod [-f -R [-H | -L | -P]] mode file ...\n"); 207 exit(1); 208 } 209