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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#) Copyright (c) 1989, 1993, 1994 The Regents of the University of California. All rights reserved. 30 * @(#)chmod.c 8.8 (Berkeley) 4/1/94 31 * $FreeBSD: head/bin/chmod/chmod.c 283997 2015-06-04 19:18:58Z pluknet $ 32 */ 33 34 #include <sys/param.h> 35 #include <sys/stat.h> 36 37 #include <err.h> 38 #include <errno.h> 39 #include <fcntl.h> 40 #include <fts.h> 41 #include <limits.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <unistd.h> 46 47 static void usage(void); 48 49 int 50 main(int argc, char *argv[]) 51 { 52 FTS *ftsp; 53 FTSENT *p; 54 void *set; 55 int Hflag, Lflag, Rflag, ch, fflag; 56 int fts_options, hflag, rval, vflag; 57 char *mode; 58 mode_t newmode; 59 60 Hflag = Lflag = Rflag = fflag = hflag = vflag = 0; 61 while ((ch = getopt(argc, argv, "HLPRXfghorstuvwx")) != -1) 62 switch (ch) { 63 case 'H': 64 Hflag = 1; 65 Lflag = 0; 66 break; 67 case 'L': 68 Lflag = 1; 69 Hflag = 0; 70 break; 71 case 'P': 72 Hflag = Lflag = 0; 73 break; 74 case 'R': 75 Rflag = 1; 76 break; 77 case 'f': 78 fflag = 1; 79 break; 80 case 'h': 81 /* 82 * In System V (and probably POSIX.2) the -h option 83 * causes chmod to change the mode of the symbolic 84 * link. 4.4BSD's symbolic links didn't have modes, 85 * so it was an undocumented noop. In FreeBSD 3.0, 86 * lchmod(2) is introduced and this option does real 87 * work. 88 */ 89 hflag = 1; 90 break; 91 /* 92 * XXX 93 * "-[rwx]" are valid mode commands. If they are the entire 94 * argument, getopt has moved past them, so decrement optind. 95 * Regardless, we're done argument processing. 96 */ 97 case 'g': case 'o': case 'r': case 's': 98 case 't': case 'u': case 'w': case 'X': case 'x': 99 if (argv[optind - 1][0] == '-' && 100 argv[optind - 1][1] == ch && 101 argv[optind - 1][2] == '\0') 102 --optind; 103 goto done; 104 case 'v': 105 vflag++; 106 break; 107 case '?': 108 default: 109 usage(); 110 } 111 done: argv += optind; 112 argc -= optind; 113 114 if (argc < 2) 115 usage(); 116 117 if (Rflag) { 118 if (hflag) 119 errx(1, "the -R and -h options may not be " 120 "specified together."); 121 if (Lflag) { 122 fts_options = FTS_LOGICAL; 123 } else { 124 fts_options = FTS_PHYSICAL; 125 126 if (Hflag) { 127 fts_options |= FTS_COMFOLLOW; 128 } 129 } 130 } else if (hflag) { 131 fts_options = FTS_PHYSICAL; 132 } else { 133 fts_options = FTS_LOGICAL; 134 } 135 136 mode = *argv; 137 errno = 0; 138 if ((set = setmode(mode)) == NULL) { 139 if (!errno) 140 errx(1, "invalid file mode: %s", mode); 141 else 142 /* malloc for setmode() failed */ 143 err(1, "setmode failed"); 144 } 145 146 if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL) 147 err(1, "fts_open"); 148 for (rval = 0; (p = fts_read(ftsp)) != NULL;) { 149 int atflag; 150 151 if ((fts_options & FTS_LOGICAL) || 152 ((fts_options & FTS_COMFOLLOW) && 153 p->fts_level == FTS_ROOTLEVEL)) 154 atflag = 0; 155 else 156 atflag = AT_SYMLINK_NOFOLLOW; 157 158 switch (p->fts_info) { 159 case FTS_D: 160 if (!Rflag) 161 fts_set(ftsp, p, FTS_SKIP); 162 break; 163 case FTS_DNR: /* Warn, chmod. */ 164 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 165 rval = 1; 166 break; 167 case FTS_DP: /* Already changed at FTS_D. */ 168 continue; 169 case FTS_ERR: /* Warn, continue. */ 170 case FTS_NS: 171 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 172 rval = 1; 173 continue; 174 default: 175 break; 176 } 177 newmode = getmode(set, p->fts_statp->st_mode); 178 if ((newmode & ALLPERMS) == (p->fts_statp->st_mode & ALLPERMS)) 179 continue; 180 if (fchmodat(AT_FDCWD, p->fts_accpath, newmode, atflag) == -1 181 && !fflag) { 182 warn("%s", p->fts_path); 183 rval = 1; 184 } else if (vflag) { 185 printf("%s", p->fts_path); 186 187 if (vflag > 1) { 188 char m1[12], m2[12]; 189 190 strmode(p->fts_statp->st_mode, m1); 191 strmode((p->fts_statp->st_mode & 192 S_IFMT) | newmode, m2); 193 printf(": 0%o [%s] -> 0%o [%s]", 194 p->fts_statp->st_mode, m1, 195 (p->fts_statp->st_mode & S_IFMT) | 196 newmode, m2); 197 } 198 printf("\n"); 199 } 200 } 201 if (errno) 202 err(1, "fts_read"); 203 exit(rval); 204 } 205 206 static void 207 usage(void) 208 { 209 fprintf(stderr, 210 "usage: chmod [-fhv] [-R [-H | -L | -P]] mode file ...\n"); 211 exit(1); 212 } 213