BSD 4_3_Net_2 release

[unix-history] / usr / src / bin / chmod / chmod.c

/*
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by the University of
*      California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1989 The Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)chmod.c     5.19 (Berkeley) 3/12/91";
#endif /* not lint */

#include <sys/types.h>
#include <sys/stat.h>
#include <fts.h>
#include <stdio.h>
#include <string.h>

extern int errno;
int retval;

main(argc, argv)
       int argc;
       char **argv;
{
       extern int optind;
       register FTS *fts;
       register FTSENT *p;
       register int oct, omode;
       register char *mode;
       mode_t *set, *setmode();
       struct stat sb;
       int ch, fflag, rflag;

       fflag = rflag = 0;
       while ((ch = getopt(argc, argv, "Rfrwx")) != EOF)
               switch((char)ch) {
               case 'R':
                       rflag = 1;
                       break;
               case 'f':               /* no longer documented */
                       fflag = 1;
                       break;
               case 'r':               /* "-[rwx]" are valid file modes */
               case 'w':
               case 'x':
                       --optind;
                       goto done;
               case '?':
               default:
                       usage();
               }
done:   argv += optind;
       argc -= optind;

       if (argc < 2)
               usage();

       mode = *argv;
       if (*mode >= '0' && *mode <= '7') {
               omode = (int)strtol(mode, (char **)NULL, 8);
               oct = 1;
       } else {
               if (!(set = setmode(mode))) {
                       (void)fprintf(stderr, "chmod: invalid file mode.\n");
                       exit(1);
               }
               oct = 0;
       }

       retval = 0;
       if (rflag) {
               if (!(fts = fts_open(++argv,
                   oct ? FTS_NOSTAT|FTS_PHYSICAL : FTS_PHYSICAL, 0))) {
                       (void)fprintf(stderr, "chmod: %s.\n", strerror(errno));
                       exit(1);
               }
               while (p = fts_read(fts))
                       switch(p->fts_info) {
                       case FTS_D:
                               break;
                       case FTS_DNR:
                       case FTS_ERR:
                       case FTS_NS:
                               (void)fprintf(stderr, "chmod: %s: %s.\n",
                                   p->fts_path, strerror(errno));
                               exit(1);
                       default:
                               if (chmod(p->fts_accpath, oct ? omode :
                                   getmode(set, p->fts_statb.st_mode)) &&
                                   !fflag)
                                       error(p->fts_path);
                               break;
                       }
               exit(retval);
       }
       if (oct) {
               while (*++argv)
                       if (chmod(*argv, omode) && !fflag)
                               error(*argv);
       } else
               while (*++argv)
                       if ((lstat(*argv, &sb) ||
                           chmod(*argv, getmode(set, sb.st_mode))) && !fflag)
                               error(*argv);
       exit(retval);
}

error(name)
       char *name;
{
       (void)fprintf(stderr, "chmod: %s: %s.\n", name, strerror(errno));
       retval = 1;
}

usage()
{
       (void)fprintf(stderr, "chmod: chmod [-R] mode file ...\n");
       exit(1);
}