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chmod.c revision 1.7 
      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 1.7 1993/08/06 01:52:36 mycroft 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 			--optind;
     86 			goto done;
     87 		case '?':
     88 		default:
     89 			usage();
     90 		}
     91 done:	argv += optind;
     92 	argc -= optind;
     93 
     94 	if (argc < 2)
     95 		usage();
     96 
     97 	mode = *argv;
     98 	if (*mode >= '0' && *mode <= '7') {
     99 		omode = (int)strtol(mode, &ep, 8);
    100 		if (omode < 0 || *ep)
    101 			err("invalid file mode: %s", mode);
    102 		oct = 1;
    103 	} else {
    104 		if (!(set = setmode(mode)))
    105 			err("invalid file mode: %s", mode);
    106 		oct = 0;
    107 	}
    108 
    109 	retval = 0;
    110 	if (rflag) {
    111 		if ((fts = fts_open(++argv, FTS_PHYSICAL, 0)) == NULL)
    112 			err("%s", strerror(errno));
    113 		while (p = fts_read(fts))
    114 			switch(p->fts_info) {
    115 			case FTS_D:
    116 			case FTS_SL:
    117 				break;
    118 			case FTS_DNR:
    119 			case FTS_ERR:
    120 			case FTS_NS:
    121 				err("%s: %s", p->fts_path, strerror(errno));
    122 			default:
    123 				if (chmod(p->fts_accpath, oct ? omode :
    124 				    getmode(set, p->fts_statp->st_mode)) &&
    125 				    !fflag)
    126 					error(p->fts_path);
    127 				break;
    128 			}
    129 		exit(retval);
    130 	}
    131 	while (*++argv) {
    132 		if (lstat(*argv, &sb) < 0) {
    133 			if (!fflag)
    134 				error(*argv);
    135 			continue;
    136 		}
    137 		if (S_ISLNK(sb.st_mode))
    138 			continue;
    139 		if (chmod(*argv, oct ? omode : getmode(set, sb.st_mode)) &&
    140 		    !fflag)
    141 			error(*argv);
    142 	}
    143 	exit(retval);
    144 }
    145 
    146 void
    147 error(name)
    148 	char *name;
    149 {
    150 	(void)fprintf(stderr, "chmod: %s: %s\n", name, strerror(errno));
    151 	retval = 1;
    152 }
    153 
    154 void
    155 usage()
    156 {
    157 	(void)fprintf(stderr, "usage: chmod [-R] mode file ...\n");
    158 	exit(1);
    159 }
    160 
    161 #if __STDC__
    162 #include <stdarg.h>
    163 #else
    164 #include <varargs.h>
    165 #endif
    166 
    167 void
    168 #if __STDC__
    169 err(const char *fmt, ...)
    170 #else
    171 err(fmt, va_alist)
    172 	char *fmt;
    173         va_dcl
    174 #endif
    175 {
    176 	va_list ap;
    177 #if __STDC__
    178 	va_start(ap, fmt);
    179 #else
    180 	va_start(ap);
    181 #endif
    182 	(void)fprintf(stderr, "chmod: ");
    183 	(void)vfprintf(stderr, fmt, ap);
    184 	va_end(ap);
    185 	(void)fprintf(stderr, "\n");
    186 	exit(1);
    187 	/* NOTREACHED */
    188 }
    189