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