1 /* $NetBSD: chmod.c,v 1.20 1998/07/28 05:31:22 mycroft 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 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT( 39 "@(#) Copyright (c) 1989, 1993, 1994\n\ 40 The Regents of the University of California. All rights reserved.\n"); 41 #endif /* not lint */ 42 43 #ifndef lint 44 #if 0 45 static char sccsid[] = "@(#)chmod.c 8.8 (Berkeley) 4/1/94"; 46 #else 47 __RCSID("$NetBSD: chmod.c,v 1.20 1998/07/28 05:31:22 mycroft Exp $"); 48 #endif 49 #endif /* not lint */ 50 51 #include <sys/types.h> 52 #include <sys/stat.h> 53 54 #include <err.h> 55 #include <errno.h> 56 #include <fts.h> 57 #include <locale.h> 58 #include <stdio.h> 59 #include <stdlib.h> 60 #include <string.h> 61 #include <unistd.h> 62 #include <limits.h> 63 64 int main __P((int, char *[])); 65 void usage __P((void)); 66 67 int 68 main(argc, argv) 69 int argc; 70 char *argv[]; 71 { 72 FTS *ftsp; 73 FTSENT *p; 74 mode_t *set; 75 long val; 76 int oct, omode; 77 int Hflag, Lflag, Rflag, ch, fflag, fts_options, hflag, rval; 78 char *ep, *mode; 79 int (*change_mode) __P((const char *, mode_t)); 80 81 set = NULL; /* XXX gcc -Wuninitialized */ 82 omode = 0; /* XXX gcc -Wuninitialized */ 83 84 (void)setlocale(LC_ALL, ""); 85 86 Hflag = Lflag = Rflag = fflag = hflag = 0; 87 while ((ch = getopt(argc, argv, "HLPRXfghorstuwx")) != -1) 88 switch (ch) { 89 case 'H': 90 Hflag = 1; 91 Lflag = 0; 92 break; 93 case 'L': 94 Lflag = 1; 95 Hflag = 0; 96 break; 97 case 'P': 98 Hflag = Lflag = 0; 99 break; 100 case 'R': 101 Rflag = 1; 102 break; 103 case 'f': /* XXX: undocumented. */ 104 fflag = 1; 105 break; 106 case 'h': 107 /* 108 * In System V (and probably POSIX.2) the -h option 109 * causes chmod to change the mode of the symbolic 110 * link. 4.4BSD's symbolic links didn't have modes, 111 * so it was an undocumented noop. In NetBSD 1.3, 112 * lchmod(2) is introduced and this option does real 113 * work. 114 */ 115 hflag = 1; 116 break; 117 /* 118 * XXX 119 * "-[rwx]" are valid mode commands. If they are the entire 120 * argument, getopt has moved past them, so decrement optind. 121 * Regardless, we're done argument processing. 122 */ 123 case 'g': case 'o': case 'r': case 's': 124 case 't': case 'u': case 'w': case 'X': case 'x': 125 if (argv[optind - 1][0] == '-' && 126 argv[optind - 1][1] == ch && 127 argv[optind - 1][2] == '\0') 128 --optind; 129 goto done; 130 case '?': 131 default: 132 usage(); 133 } 134 done: argv += optind; 135 argc -= optind; 136 137 if (argc < 2) 138 usage(); 139 140 fts_options = FTS_PHYSICAL; 141 if (Rflag) { 142 if (hflag) 143 errx(1, 144 "the -R and -h options may not be specified together."); 145 if (Hflag) 146 fts_options |= FTS_COMFOLLOW; 147 if (Lflag) { 148 fts_options &= ~FTS_PHYSICAL; 149 fts_options |= FTS_LOGICAL; 150 } 151 } 152 if (hflag) 153 change_mode = lchmod; 154 else 155 change_mode = chmod; 156 157 mode = *argv; 158 if (*mode >= '0' && *mode <= '7') { 159 errno = 0; 160 val = strtol(mode, &ep, 8); 161 if (val > INT_MAX || val < 0) 162 errno = ERANGE; 163 if (errno) 164 err(1, "invalid file mode: %s", mode); 165 if (*ep) 166 errx(1, "invalid file mode: %s", mode); 167 omode = val; 168 oct = 1; 169 } else { 170 if ((set = setmode(mode)) == NULL) 171 errx(1, "invalid file mode: %s", mode); 172 oct = 0; 173 } 174 175 if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL) 176 err(1, argv[0]); 177 for (rval = 0; (p = fts_read(ftsp)) != NULL;) { 178 switch (p->fts_info) { 179 case FTS_D: 180 if (!Rflag) 181 (void)fts_set(ftsp, p, FTS_SKIP); 182 break; 183 case FTS_DNR: /* Warn, chmod, continue. */ 184 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 185 rval = 1; 186 break; 187 case FTS_DP: /* Already changed at FTS_D. */ 188 continue; 189 case FTS_ERR: /* Warn, continue. */ 190 case FTS_NS: 191 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 192 rval = 1; 193 continue; 194 case FTS_SL: /* Ignore. */ 195 case FTS_SLNONE: 196 /* 197 * The only symlinks that end up here are ones that 198 * don't point to anything and ones that we found 199 * doing a physical walk. 200 */ 201 if (!hflag) 202 continue; 203 /* else */ 204 /* FALLTHROUGH */ 205 default: 206 break; 207 } 208 if ((*change_mode)(p->fts_accpath, oct ? omode : 209 getmode(set, p->fts_statp->st_mode)) && !fflag) { 210 warn("%s", p->fts_path); 211 rval = 1; 212 } 213 } 214 if (errno) 215 err(1, "fts_read"); 216 exit(rval); 217 /* NOTREACHED */ 218 } 219 220 void 221 usage() 222 { 223 (void)fprintf(stderr, 224 "usage: chmod [-R [-H | -L | -P]] [-h] mode file ...\n"); 225 exit(1); 226 /* NOTREACHED */ 227 } 228