chmod.c revision 77333
11556Srgrimes/* 21556Srgrimes * Copyright (c) 1989, 1993, 1994 31556Srgrimes * The Regents of the University of California. All rights reserved. 41556Srgrimes * 51556Srgrimes * Redistribution and use in source and binary forms, with or without 61556Srgrimes * modification, are permitted provided that the following conditions 71556Srgrimes * are met: 81556Srgrimes * 1. Redistributions of source code must retain the above copyright 91556Srgrimes * notice, this list of conditions and the following disclaimer. 101556Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111556Srgrimes * notice, this list of conditions and the following disclaimer in the 121556Srgrimes * documentation and/or other materials provided with the distribution. 131556Srgrimes * 3. All advertising materials mentioning features or use of this software 141556Srgrimes * must display the following acknowledgement: 151556Srgrimes * This product includes software developed by the University of 161556Srgrimes * California, Berkeley and its contributors. 171556Srgrimes * 4. Neither the name of the University nor the names of its contributors 181556Srgrimes * may be used to endorse or promote products derived from this software 191556Srgrimes * without specific prior written permission. 201556Srgrimes * 211556Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221556Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231556Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241556Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251556Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261556Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271556Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281556Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291556Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301556Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311556Srgrimes * SUCH DAMAGE. 321556Srgrimes */ 331556Srgrimes 341556Srgrimes#ifndef lint 3520411Sstevestatic char const copyright[] = 361556Srgrimes"@(#) Copyright (c) 1989, 1993, 1994\n\ 371556Srgrimes The Regents of the University of California. All rights reserved.\n"; 381556Srgrimes#endif /* not lint */ 391556Srgrimes 401556Srgrimes#ifndef lint 4135773Scharnier#if 0 4236002Scharnierstatic char sccsid[] = "@(#)chmod.c 8.8 (Berkeley) 4/1/94"; 4335773Scharnier#endif 4435773Scharnierstatic const char rcsid[] = 4550471Speter "$FreeBSD: head/bin/chmod/chmod.c 77333 2001-05-28 12:58:10Z ru $"; 461556Srgrimes#endif /* not lint */ 471556Srgrimes 4836002Scharnier#include <sys/types.h> 491556Srgrimes#include <sys/stat.h> 501556Srgrimes 511556Srgrimes#include <err.h> 521556Srgrimes#include <errno.h> 531556Srgrimes#include <fts.h> 546170Sbde#include <limits.h> 551556Srgrimes#include <stdio.h> 561556Srgrimes#include <stdlib.h> 571556Srgrimes#include <string.h> 581556Srgrimes#include <unistd.h> 591556Srgrimes 6076871Skrisint main __P((int, char *[])); 611556Srgrimesvoid usage __P((void)); 621556Srgrimes 631556Srgrimesint 641556Srgrimesmain(argc, argv) 651556Srgrimes int argc; 661556Srgrimes char *argv[]; 671556Srgrimes{ 681556Srgrimes FTS *ftsp; 691556Srgrimes FTSENT *p; 701556Srgrimes mode_t *set; 711556Srgrimes long val; 721556Srgrimes int oct, omode; 731556Srgrimes int Hflag, Lflag, Pflag, Rflag, ch, fflag, fts_options, hflag, rval; 7453780Sobrien int vflag; 751556Srgrimes char *ep, *mode; 7664013Speter int newmode; 771556Srgrimes 787165Sjoerg set = NULL; 797165Sjoerg omode = 0; 8053824Sobrien Hflag = Lflag = Pflag = Rflag = fflag = hflag = vflag = 0; 8153780Sobrien while ((ch = getopt(argc, argv, "HLPRXfgorstuvwx")) != -1) 821556Srgrimes switch (ch) { 831556Srgrimes case 'H': 841556Srgrimes Hflag = 1; 851556Srgrimes Lflag = Pflag = 0; 861556Srgrimes break; 871556Srgrimes case 'L': 881556Srgrimes Lflag = 1; 891556Srgrimes Hflag = Pflag = 0; 901556Srgrimes break; 911556Srgrimes case 'P': 921556Srgrimes Pflag = 1; 931556Srgrimes Hflag = Lflag = 0; 941556Srgrimes break; 951556Srgrimes case 'R': 961556Srgrimes Rflag = 1; 971556Srgrimes break; 9849544Schris case 'f': 991556Srgrimes fflag = 1; 1001556Srgrimes break; 1011556Srgrimes case 'h': 1021556Srgrimes /* 1031556Srgrimes * In System V (and probably POSIX.2) the -h option 1041556Srgrimes * causes chmod to change the mode of the symbolic 1051556Srgrimes * link. 4.4BSD's symbolic links don't have modes, 1061556Srgrimes * so it's an undocumented noop. Do syntax checking, 1071556Srgrimes * though. 1081556Srgrimes */ 1091556Srgrimes hflag = 1; 1101556Srgrimes break; 1111556Srgrimes /* 1121556Srgrimes * XXX 1131556Srgrimes * "-[rwx]" are valid mode commands. If they are the entire 1141556Srgrimes * argument, getopt has moved past them, so decrement optind. 1151556Srgrimes * Regardless, we're done argument processing. 1161556Srgrimes */ 1171556Srgrimes case 'g': case 'o': case 'r': case 's': 1181556Srgrimes case 't': case 'u': case 'w': case 'X': case 'x': 1191556Srgrimes if (argv[optind - 1][0] == '-' && 1201556Srgrimes argv[optind - 1][1] == ch && 1211556Srgrimes argv[optind - 1][2] == '\0') 1221556Srgrimes --optind; 1231556Srgrimes goto done; 12453780Sobrien case 'v': 12553780Sobrien vflag = 1; 12653780Sobrien break; 1271556Srgrimes case '?': 1281556Srgrimes default: 1291556Srgrimes usage(); 1301556Srgrimes } 1311556Srgrimesdone: argv += optind; 1321556Srgrimes argc -= optind; 1331556Srgrimes 1341556Srgrimes if (argc < 2) 1351556Srgrimes usage(); 1361556Srgrimes 1371556Srgrimes if (Rflag) { 13877333Sru fts_options = FTS_PHYSICAL; 1391556Srgrimes if (hflag) 1401556Srgrimes errx(1, 1411556Srgrimes "the -R and -h options may not be specified together."); 1421556Srgrimes if (Hflag) 1431556Srgrimes fts_options |= FTS_COMFOLLOW; 1441556Srgrimes if (Lflag) { 1451556Srgrimes fts_options &= ~FTS_PHYSICAL; 1461556Srgrimes fts_options |= FTS_LOGICAL; 1471556Srgrimes } 14877333Sru } else 14977333Sru fts_options = FTS_LOGICAL; 1501556Srgrimes 1511556Srgrimes mode = *argv; 1521556Srgrimes if (*mode >= '0' && *mode <= '7') { 1531556Srgrimes errno = 0; 1541556Srgrimes val = strtol(mode, &ep, 8); 1551556Srgrimes if (val > INT_MAX || val < 0) 1561556Srgrimes errno = ERANGE; 1571556Srgrimes if (errno) 1581556Srgrimes err(1, "invalid file mode: %s", mode); 1591556Srgrimes if (*ep) 1601556Srgrimes errx(1, "invalid file mode: %s", mode); 1611556Srgrimes omode = val; 1621556Srgrimes oct = 1; 1631556Srgrimes } else { 1641556Srgrimes if ((set = setmode(mode)) == NULL) 1651556Srgrimes errx(1, "invalid file mode: %s", mode); 1661556Srgrimes oct = 0; 1671556Srgrimes } 1681556Srgrimes 1691556Srgrimes if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL) 1701556Srgrimes err(1, NULL); 1711556Srgrimes for (rval = 0; (p = fts_read(ftsp)) != NULL;) { 1721556Srgrimes switch (p->fts_info) { 17317496Sadam case FTS_D: /* Change it at FTS_DP. */ 17417496Sadam if (!Rflag) 17517496Sadam fts_set(ftsp, p, FTS_SKIP); 17617496Sadam continue; 1771556Srgrimes case FTS_DNR: /* Warn, chmod, continue. */ 1781556Srgrimes warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 1791556Srgrimes rval = 1; 1801556Srgrimes break; 1811556Srgrimes case FTS_ERR: /* Warn, continue. */ 1821556Srgrimes case FTS_NS: 1831556Srgrimes warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 1841556Srgrimes rval = 1; 1851556Srgrimes continue; 1861556Srgrimes case FTS_SL: /* Ignore. */ 1871556Srgrimes case FTS_SLNONE: 1881556Srgrimes /* 1891556Srgrimes * The only symlinks that end up here are ones that 1901556Srgrimes * don't point to anything and ones that we found 1911556Srgrimes * doing a physical walk. 1921556Srgrimes */ 1931556Srgrimes continue; 1941556Srgrimes default: 1951556Srgrimes break; 1961556Srgrimes } 19764013Speter newmode = oct ? omode : getmode(set, p->fts_statp->st_mode); 19864013Speter if ((newmode & ALLPERMS) == (p->fts_statp->st_mode & ALLPERMS)) 19964013Speter continue; 20064013Speter if (chmod(p->fts_accpath, newmode) && !fflag) { 20162887Skris warn("%s", p->fts_path); 2021556Srgrimes rval = 1; 20353780Sobrien } else { 20453780Sobrien if (vflag) 20553780Sobrien (void)printf("%s\n", p->fts_accpath); 2061556Srgrimes } 2071556Srgrimes } 2081556Srgrimes if (errno) 2091556Srgrimes err(1, "fts_read"); 21041842Simp free(set); 2111556Srgrimes exit(rval); 2121556Srgrimes} 2131556Srgrimes 2141556Srgrimesvoid 2151556Srgrimesusage() 2161556Srgrimes{ 2171556Srgrimes (void)fprintf(stderr, 21853824Sobrien "usage: chmod [-fv] [-R [-H | -L | -P]] mode file ...\n"); 2191556Srgrimes exit(1); 2201556Srgrimes} 221