usr.bin/chflags/chflags.c

   1 /*
   2  * Copyright (c) 1992, 1993, 1994
   3  *      The Regents of the University of California.  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  * @(#) Copyright (c) 1992, 1993, 1994 The Regents of the University of California.  All rights reserved.
  34  * @(#)chflags.c        8.5 (Berkeley) 4/1/94
  35  * $FreeBSD: src/usr.bin/chflags/chflags.c,v 1.7.2.3 2001/08/01 23:09:18 obrien Exp $
  36  * $DragonFly: src/usr.bin/chflags/chflags.c,v 1.4 2004/11/29 20:27:30 liamfoy Exp $
  37  */
  38
  39 #include <sys/types.h>
  40 #include <sys/stat.h>
  41
  42 #include <err.h>
  43 #include <errno.h>
  44 #include <fts.h>
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47 #include <string.h>
  48 #include <unistd.h>
  49
  50 static void     usage(void);
  51
  52 int
  53 main(int argc, char **argv)
  54 {
  55         FTS *ftsp;
  56         FTSENT *p;
  57         u_long clear, set;
  58         long val;
  59         int Hflag, Lflag, Rflag, ch, fts_options, oct, rval;
  60         char *flags, *ep;
  61
  62         Hflag = Lflag = Rflag = 0;
  63         while ((ch = getopt(argc, argv, "HLPR")) != -1)
  64                 switch (ch) {
  65                 case 'H':
  66                         Hflag = 1;
  67                         Lflag = 0;
  68                         break;
  69                 case 'L':
  70                         Lflag = 1;
  71                         Hflag = 0;
  72                         break;
  73                 case 'P':
  74                         Hflag = Lflag = 0;
  75                         break;
  76                 case 'R':
  77                         Rflag = 1;
  78                         break;
  79                 default:
  80                         usage();
  81                 }
  82         argv += optind;
  83         argc -= optind;
  84
  85         if (argc < 2)
  86                 usage();
  87
  88         fts_options = FTS_PHYSICAL;
  89         if (Rflag) {
  90                 if (Hflag)
  91                         fts_options |= FTS_COMFOLLOW;
  92                 if (Lflag) {
  93                         fts_options &= ~FTS_PHYSICAL;
  94                         fts_options |= FTS_LOGICAL;
  95                 }
  96         }
  97
  98         flags = *argv;
  99         if (*flags >= '0' && *flags <= '7') {
 100                 errno = 0;
 101                 val = strtol(flags, &ep, 8);
 102                 if (val < 0)
 103                         errno = ERANGE;
 104                 if (errno)
 105                         err(1, "invalid flags: %s", flags);
 106                 if (*ep)
 107                         errx(1, "invalid flags: %s", flags);
 108                 set = val;
 109                 oct = 1;
 110         } else {
 111                 if (strtofflags(&flags, &set, &clear))
 112                         errx(1, "invalid flag: %s", flags);
 113                 clear = ~clear;
 114                 oct = 0;
 115         }
 116
 117         if ((ftsp = fts_open(++argv, fts_options , 0)) == NULL)
 118                 err(1, NULL);
 119
 120         for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
 121                 switch (p->fts_info) {
 122                 case FTS_D:
 123                         if (!Rflag)             /* Change it at FTS_DP if we're recursive. */
 124                                 fts_set(ftsp, p, FTS_SKIP);
 125                         continue;
 126                 case FTS_DNR:                   /* Warn, chflag, continue. */
 127                         warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
 128                         rval = 1;
 129                         break;
 130                 case FTS_ERR:                   /* Warn, continue. */
 131                 case FTS_NS:
 132                         warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
 133                         rval = 1;
 134                         continue;
 135                 case FTS_SL:                    /* Ignore. */
 136                 case FTS_SLNONE:
 137                         /*
 138                          * The only symlinks that end up here are ones that
 139                          * don't point to anything and ones that we found
 140                          * doing a physical walk.
 141                          */
 142                         continue;
 143                 default:
 144                         break;
 145                 }
 146                 if (oct) {
 147                         if (!chflags(p->fts_accpath, set))
 148                                 continue;
 149                 } else {
 150                         p->fts_statp->st_flags |= set;
 151                         p->fts_statp->st_flags &= clear;
 152                         if (!chflags(p->fts_accpath, (u_long)p->fts_statp->st_flags))
 153                                 continue;
 154                 }
 155                 warn("%s", p->fts_path);
 156                 rval = 1;
 157         }
 158         if (errno)
 159                 err(1, "fts_read");
 160         exit(rval);
 161 }
 162
 163 static void
 164 usage(void)
 165 {
 166         fprintf(stderr,
 167             "usage: chflags [-R [-H | -L | -P]] flags file ...\n");
 168         exit(1);
 169 }