1 /* $NetBSD: chmod.c,v 1.17 1997/10/11 03:11:04 enami 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 1.17 1997/10/11 03:11:04 enami 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, Pflag, 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 setlocale(LC_ALL, ""); 85 86 Hflag = Lflag = Pflag = Rflag = fflag = hflag = 0; 87 while ((ch = getopt(argc, argv, "HLPRXfghorstuwx")) != -1) 88 switch (ch) { 89 case 'H': 90 Hflag = 1; 91 Lflag = Pflag = 0; 92 break; 93 case 'L': 94 Lflag = 1; 95 Hflag = Pflag = 0; 96 break; 97 case 'P': 98 Pflag = 1; 99 Hflag = Lflag = 0; 100 break; 101 case 'R': 102 Rflag = 1; 103 break; 104 case 'f': /* XXX: undocumented. */ 105 fflag = 1; 106 break; 107 case 'h': 108 /* 109 * In System V (and probably POSIX.2) the -h option 110 * causes chmod to change the mode of the symbolic 111 * link. 4.4BSD's symbolic links didn't have modes, 112 * so it was an undocumented noop. In NetBSD 1.3, 113 * lchmod(2) is introduced and this option does real 114 * work. 115 */ 116 hflag = 1; 117 break; 118 /* 119 * XXX 120 * "-[rwx]" are valid mode commands. If they are the entire 121 * argument, getopt has moved past them, so decrement optind. 122 * Regardless, we're done argument processing. 123 */ 124 case 'g': case 'o': case 'r': case 's': 125 case 't': case 'u': case 'w': case 'X': case 'x': 126 if (argv[optind - 1][0] == '-' && 127 argv[optind - 1][1] == ch && 128 argv[optind - 1][2] == '\0') 129 --optind; 130 goto done; 131 case '?': 132 default: 133 usage(); 134 } 135 done: argv += optind; 136 argc -= optind; 137 138 if (argc < 2) 139 usage(); 140 141 fts_options = FTS_PHYSICAL; 142 if (Rflag) { 143 if (hflag) 144 errx(1, 145 "the -R and -h options may not be specified together."); 146 if (Hflag) 147 fts_options |= FTS_COMFOLLOW; 148 if (Lflag) { 149 fts_options &= ~FTS_PHYSICAL; 150 fts_options |= FTS_LOGICAL; 151 } 152 } 153 if (hflag) 154 change_mode = lchmod; 155 else 156 change_mode = chmod; 157 158 mode = *argv; 159 if (*mode >= '0' && *mode <= '7') { 160 errno = 0; 161 val = strtol(mode, &ep, 8); 162 if (val > INT_MAX || val < 0) 163 errno = ERANGE; 164 if (errno) 165 err(1, "invalid file mode: %s", mode); 166 if (*ep) 167 errx(1, "invalid file mode: %s", mode); 168 omode = val; 169 oct = 1; 170 } else { 171 if ((set = setmode(mode)) == NULL) 172 errx(1, "invalid file mode: %s", mode); 173 oct = 0; 174 } 175 176 if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL) 177 err(1, argv[0]); 178 for (rval = 0; (p = fts_read(ftsp)) != NULL;) { 179 switch (p->fts_info) { 180 case FTS_D: 181 if (!Rflag) 182 fts_set(ftsp, p, FTS_SKIP); 183 break; 184 case FTS_DNR: /* Warn, chmod, continue. */ 185 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 186 rval = 1; 187 break; 188 case FTS_DP: /* Already changed at FTS_D. */ 189 continue; 190 case FTS_ERR: /* Warn, continue. */ 191 case FTS_NS: 192 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 193 rval = 1; 194 continue; 195 case FTS_SL: /* Ignore. */ 196 case FTS_SLNONE: 197 /* 198 * The only symlinks that end up here are ones that 199 * don't point to anything and ones that we found 200 * doing a physical walk. 201 */ 202 if (!hflag) 203 continue; 204 /* else */ 205 /* FALLTHROUGH */ 206 default: 207 break; 208 } 209 if ((*change_mode)(p->fts_accpath, oct ? omode : 210 getmode(set, p->fts_statp->st_mode)) && !fflag) { 211 warn("%s", p->fts_path); 212 rval = 1; 213 } 214 } 215 if (errno) 216 err(1, "fts_read"); 217 exit(rval); 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 } 227