1 /* $NetBSD: chmod.c,v 1.12 1995/03/21 09:02:09 cgd Exp $ */ 2 3 /* 4 * Copyright (c) 1989, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef lint 37 static char 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 #if 0 44 static char sccsid[] = "@(#)chmod.c 8.8 (Berkeley) 4/1/94"; 45 #else 46 static char rcsid[] = "$NetBSD: chmod.c,v 1.12 1995/03/21 09:02:09 cgd Exp $"; 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/types.h> 51 #include <sys/stat.h> 52 53 #include <err.h> 54 #include <errno.h> 55 #include <fts.h> 56 #include <stdio.h> 57 #include <stdlib.h> 58 #include <string.h> 59 #include <unistd.h> 60 #include <limits.h> 61 62 void usage __P((void)); 63 64 int 65 main(argc, argv) 66 int argc; 67 char *argv[]; 68 { 69 FTS *ftsp; 70 FTSENT *p; 71 mode_t *set; 72 long val; 73 int oct, omode; 74 int Hflag, Lflag, Pflag, Rflag, ch, fflag, fts_options, hflag, rval; 75 char *ep, *mode; 76 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': /* XXX: undocumented. */ 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: 167 if (!Rflag) 168 fts_set(ftsp, p, FTS_SKIP); 169 break; 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_DP: /* Already changed at FTS_D. */ 175 continue; 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 continue; 189 default: 190 break; 191 } 192 if (chmod(p->fts_accpath, oct ? omode : 193 getmode(set, p->fts_statp->st_mode)) && !fflag) { 194 warn(p->fts_path); 195 rval = 1; 196 } 197 } 198 if (errno) 199 err(1, "fts_read"); 200 exit(rval); 201 } 202 203 void 204 usage() 205 { 206 (void)fprintf(stderr, 207 "usage: chmod [-R [-H | -L | -P]] mode file ...\n"); 208 exit(1); 209 } 210