chmod.c revision 53824
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 35static 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 42static char sccsid[] = "@(#)chmod.c 8.8 (Berkeley) 4/1/94"; 43#endif 44static const char rcsid[] = 45 "$FreeBSD: head/bin/chmod/chmod.c 53824 1999-11-28 12:24:16Z obrien $"; 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 60void usage __P((void)); 61 62int 63main(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 int vflag; 74 char *ep, *mode; 75 76 set = NULL; 77 omode = 0; 78 Hflag = Lflag = Pflag = Rflag = fflag = hflag = vflag = 0; 79 while ((ch = getopt(argc, argv, "HLPRXfgorstuvwx")) != -1) 80 switch (ch) { 81 case 'H': 82 Hflag = 1; 83 Lflag = Pflag = 0; 84 break; 85 case 'L': 86 Lflag = 1; 87 Hflag = Pflag = 0; 88 break; 89 case 'P': 90 Pflag = 1; 91 Hflag = Lflag = 0; 92 break; 93 case 'R': 94 Rflag = 1; 95 break; 96 case 'f': 97 fflag = 1; 98 break; 99 case 'h': 100 /* 101 * In System V (and probably POSIX.2) the -h option 102 * causes chmod to change the mode of the symbolic 103 * link. 4.4BSD's symbolic links don't have modes, 104 * so it's an undocumented noop. Do syntax checking, 105 * though. 106 */ 107 hflag = 1; 108 break; 109 /* 110 * XXX 111 * "-[rwx]" are valid mode commands. If they are the entire 112 * argument, getopt has moved past them, so decrement optind. 113 * Regardless, we're done argument processing. 114 */ 115 case 'g': case 'o': case 'r': case 's': 116 case 't': case 'u': case 'w': case 'X': case 'x': 117 if (argv[optind - 1][0] == '-' && 118 argv[optind - 1][1] == ch && 119 argv[optind - 1][2] == '\0') 120 --optind; 121 goto done; 122 case 'v': 123 vflag = 1; 124 break; 125 case '?': 126 default: 127 usage(); 128 } 129done: argv += optind; 130 argc -= optind; 131 132 if (argc < 2) 133 usage(); 134 135 fts_options = FTS_PHYSICAL; 136 if (Rflag) { 137 if (hflag) 138 errx(1, 139 "the -R and -h options may not be specified together."); 140 if (Hflag) 141 fts_options |= FTS_COMFOLLOW; 142 if (Lflag) { 143 fts_options &= ~FTS_PHYSICAL; 144 fts_options |= FTS_LOGICAL; 145 } 146 } 147 148 mode = *argv; 149 if (*mode >= '0' && *mode <= '7') { 150 errno = 0; 151 val = strtol(mode, &ep, 8); 152 if (val > INT_MAX || val < 0) 153 errno = ERANGE; 154 if (errno) 155 err(1, "invalid file mode: %s", mode); 156 if (*ep) 157 errx(1, "invalid file mode: %s", mode); 158 omode = val; 159 oct = 1; 160 } else { 161 if ((set = setmode(mode)) == NULL) 162 errx(1, "invalid file mode: %s", mode); 163 oct = 0; 164 } 165 166 if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL) 167 err(1, NULL); 168 for (rval = 0; (p = fts_read(ftsp)) != NULL;) { 169 switch (p->fts_info) { 170 case FTS_D: /* Change it at FTS_DP. */ 171 if (!Rflag) 172 fts_set(ftsp, p, FTS_SKIP); 173 continue; 174 case FTS_DNR: /* Warn, chmod, continue. */ 175 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 176 rval = 1; 177 break; 178 case FTS_ERR: /* Warn, continue. */ 179 case FTS_NS: 180 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 181 rval = 1; 182 continue; 183 case FTS_SL: /* Ignore. */ 184 case FTS_SLNONE: 185 /* 186 * The only symlinks that end up here are ones that 187 * don't point to anything and ones that we found 188 * doing a physical walk. 189 */ 190 continue; 191 default: 192 break; 193 } 194 if (chmod(p->fts_accpath, oct ? omode : 195 getmode(set, p->fts_statp->st_mode)) && !fflag) { 196 warn(p->fts_path); 197 rval = 1; 198 } else { 199 if (vflag) 200 (void)printf("%s\n", p->fts_accpath); 201 } 202 } 203 if (errno) 204 err(1, "fts_read"); 205 free(set); 206 exit(rval); 207} 208 209void 210usage() 211{ 212 (void)fprintf(stderr, 213 "usage: chmod [-fv] [-R [-H | -L | -P]] mode file ...\n"); 214 exit(1); 215} 216