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chmod.c revision 1.8 
      1 /*
      2  * Copyright (c) 1989 The Regents of the University of California.
      3  * 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
     35 char copyright[] =
     36 "@(#) Copyright (c) 1989 The Regents of the University of California.\n\
     37  All rights reserved.\n";
     38 #endif /* not lint */
     39 
     40 #ifndef lint
     41 /*static char sccsid[] = "from: @(#)chmod.c	5.21 (Berkeley) 1/27/92";*/
     42 static char rcsid[] = "$Id: chmod.c,v 1.8 1994/02/11 02:57:24 cgd Exp $";
     43 #endif /* not lint */
     44 
     45 #include <sys/types.h>
     46 #include <sys/stat.h>
     47 #include <errno.h>
     48 #include <fts.h>
     49 #include <unistd.h>
     50 #include <stdio.h>
     51 #include <stdlib.h>
     52 #include <string.h>
     53 
     54 int retval;
     55 
     56 void err __P((const char *, ...));
     57 void error __P((char *));
     58 void usage __P((void));
     59 
     60 int
     61 main(argc, argv)
     62 	int argc;
     63 	char *argv[];
     64 {
     65 	register FTS *fts;
     66 	register FTSENT *p;
     67 	register int oct, omode;
     68 	struct stat sb;
     69 	mode_t *set;
     70 	int ch, fflag, rflag;
     71 	char *ep, *mode;
     72 
     73 	fflag = rflag = 0;
     74 	while ((ch = getopt(argc, argv, "Rfrwx")) != EOF)
     75 		switch((char)ch) {
     76 		case 'R':
     77 			rflag = 1;
     78 			break;
     79 		case 'f':		/* no longer documented */
     80 			fflag = 1;
     81 			break;
     82 		case 'r':		/* "-[rwx]" are valid file modes */
     83 		case 'w':
     84 		case 'x':
     85 		case 'u':		/* as are -[ugo] */
     86 		case 'g':
     87 		case 'o':
     88 		case 'X':		/* -[Xts] valid but ignored later */
     89 		case 't':
     90 		case 's':
     91 			--optind;
     92 			goto done;
     93 		case '?':
     94 		default:
     95 			usage();
     96 		}
     97 done:	argv += optind;
     98 	argc -= optind;
     99 
    100 	if (argc < 2)
    101 		usage();
    102 
    103 	mode = *argv;
    104 	if (*mode >= '0' && *mode <= '7') {
    105 		omode = (int)strtol(mode, &ep, 8);
    106 		if (omode < 0 || *ep)
    107 			err("invalid file mode: %s", mode);
    108 		oct = 1;
    109 	} else {
    110 		if (!(set = setmode(mode)))
    111 			err("invalid file mode: %s", mode);
    112 		oct = 0;
    113 	}
    114 
    115 	retval = 0;
    116 	if (rflag) {
    117 		if ((fts = fts_open(++argv, FTS_PHYSICAL, 0)) == NULL)
    118 			err("%s", strerror(errno));
    119 		while (p = fts_read(fts))
    120 			switch(p->fts_info) {
    121 			case FTS_D:
    122 			case FTS_SL:
    123 				break;
    124 			case FTS_DNR:
    125 			case FTS_ERR:
    126 			case FTS_NS:
    127 				err("%s: %s", p->fts_path, strerror(errno));
    128 			default:
    129 				if (chmod(p->fts_accpath, oct ? omode :
    130 				    getmode(set, p->fts_statp->st_mode)) &&
    131 				    !fflag)
    132 					error(p->fts_path);
    133 				break;
    134 			}
    135 		exit(retval);
    136 	}
    137 	while (*++argv) {
    138 		if (lstat(*argv, &sb) < 0) {
    139 			if (!fflag)
    140 				error(*argv);
    141 			continue;
    142 		}
    143 		if (S_ISLNK(sb.st_mode))
    144 			continue;
    145 		if (chmod(*argv, oct ? omode : getmode(set, sb.st_mode)) &&
    146 		    !fflag)
    147 			error(*argv);
    148 	}
    149 	exit(retval);
    150 }
    151 
    152 void
    153 error(name)
    154 	char *name;
    155 {
    156 	(void)fprintf(stderr, "chmod: %s: %s\n", name, strerror(errno));
    157 	retval = 1;
    158 }
    159 
    160 void
    161 usage()
    162 {
    163 	(void)fprintf(stderr, "usage: chmod [-R] mode file ...\n");
    164 	exit(1);
    165 }
    166 
    167 #if __STDC__
    168 #include <stdarg.h>
    169 #else
    170 #include <varargs.h>
    171 #endif
    172 
    173 void
    174 #if __STDC__
    175 err(const char *fmt, ...)
    176 #else
    177 err(fmt, va_alist)
    178 	char *fmt;
    179         va_dcl
    180 #endif
    181 {
    182 	va_list ap;
    183 #if __STDC__
    184 	va_start(ap, fmt);
    185 #else
    186 	va_start(ap);
    187 #endif
    188 	(void)fprintf(stderr, "chmod: ");
    189 	(void)vfprintf(stderr, fmt, ap);
    190 	va_end(ap);
    191 	(void)fprintf(stderr, "\n");
    192 	exit(1);
    193 	/* NOTREACHED */
    194 }
    195