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

/*
* Copyright (c) 1989, 1993, 1994
*      The Regents of the University of California.  All rights reserved.
*
* %sccs.include.redist.c%
*/

#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1989, 1993, 1994\n\
       The Regents of the University of California.  All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)chmod.c     8.3 (Berkeley) %G%";
#endif /* not lint */

#include <sys/types.h>
#include <sys/stat.h>

#include <err.h>
#include <errno.h>
#include <fts.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

void usage __P((void));

int
main(argc, argv)
       int argc;
       char *argv[];
{
       register FTS *ftsp;
       register FTSENT *p;
       register int oct, omode;
       mode_t *set;
       int ch, fflag, rflag, hflag, Hflag;
       int fts_options, retval;
       char *ep, *mode;

       fts_options = FTS_PHYSICAL;
       fflag = rflag = hflag = Hflag = 0;
       while ((ch = getopt(argc, argv, "HRXfghorstuwx")) != EOF)
               switch (ch) {
               case 'H':
                       Hflag = 1;
                       fts_options |= FTS_COMFOLLOW;
                       break;
               case 'R':
                       rflag = 1;
                       break;
               case 'f':               /* XXX: no longer documented. */
                       fflag = 1;
                       break;
               case 'h':
                       hflag = 1;
                       fts_options &= ~FTS_PHYSICAL;
                       fts_options |= FTS_LOGICAL;
                       break;
               /*
                * XXX
                * "-[rwx]" are valid mode commands.  If they are the entire
                * argument, getopt has moved past them, so decrement optind.
                * Regardless, we're done argument processing.
                */
               case 'g': case 'o': case 'r': case 's':
               case 't': case 'u': case 'w': case 'X': case 'x':
                       if (argv[optind - 1][0] == '-' &&
                           argv[optind - 1][1] == ch &&
                           argv[optind - 1][2] == '\0')
                               --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, &ep, 8);
               if (omode < 0 || *ep)
                       errx(1, "invalid file mode: %s", mode);
               oct = 1;
       } else {
               if ((set = setmode(mode)) == NULL)
                       errx(1, "invalid file mode: %s", mode);
               oct = 0;
       }

       retval = 0;
       if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL)
               err(1, "");
       while ((p = fts_read(ftsp)) != NULL)
               switch (p->fts_info) {
               case FTS_D:
                       if (!rflag)
                               fts_set(ftsp, p, FTS_SKIP);
               case FTS_SL:
               case FTS_SLNONE:
                       break;
               case FTS_DNR:
               case FTS_ERR:
               case FTS_NS:
                       err(1, "%s", p->fts_path);
               default:        
                       if (p->fts_info == FTS_SL && !(hflag || 
                           (Hflag && p->fts_level == FTS_ROOTLEVEL)))
                               continue;
                       if (chmod(p->fts_accpath, oct ? omode :
                           getmode(set, p->fts_statp->st_mode)) && !fflag) {
                               warn(p->fts_path);
                               retval = 1;
                       }
                       break;
               }
       exit(retval);
}

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