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 1.7 2008/11/11 05:53:07 pavalos Exp $
  37  */
  38
  39 #include <sys/param.h>
  40 #include <sys/types.h>
  41 #include <sys/stat.h>
  42
  43 #include <err.h>
  44 #include <errno.h>
  45 #include <fts.h>
  46 #include <stdio.h>
  47 #include <stdlib.h>
  48 #include <string.h>
  49 #include <unistd.h>
  50
  51 static void     usage(void);
  52
  53 int
  54 main(int argc, char **argv)
  55 {
  56         FTS *ftsp;
  57         FTSENT *p;
  58         u_long clear, set;
  59         long val;
  60         int Hflag, Lflag, Rflag, hflag, ch, fts_options, oct, rval;
  61         char *flags, *ep;
  62         int (*change_flags)(const char *, unsigned long);
  63
  64         Hflag = Lflag = Rflag = hflag = 0;
  65         while ((ch = getopt(argc, argv, "HLPRh")) != -1)
  66                 switch (ch) {
  67                 case 'H':
  68                         Hflag = 1;
  69                         Lflag = 0;
  70                         break;
  71                 case 'L':
  72                         Lflag = 1;
  73                         Hflag = 0;
  74                         break;
  75                 case 'P':
  76                         Hflag = Lflag = 0;
  77                         break;
  78                 case 'R':
  79                         Rflag = 1;
  80                         break;
  81                 case 'h':
  82                         hflag = 1;
  83                         break;
  84                 default:
  85                         usage();
  86                 }
  87         argv += optind;
  88         argc -= optind;
  89
  90         if (argc < 2)
  91                 usage();
  92
  93         if (Rflag) {
  94                 fts_options = FTS_PHYSICAL;
  95                 if (hflag) {
  96                         errx(1, "the -R and -h options "
  97                                 "may not be specified together");
  98                 }
  99                 if (Hflag)
 100                         fts_options |= FTS_COMFOLLOW;
 101                 if (Lflag) {
 102                         fts_options &= ~FTS_PHYSICAL;
 103                         fts_options |= FTS_LOGICAL;
 104                 }
 105         } else
 106                 fts_options = FTS_LOGICAL;
 107
 108 #if __DragonFly_version >= 200101
 109         if (hflag)
 110                 change_flags = lchflags;
 111         else
 112 #endif
 113                 change_flags = chflags;
 114
 115         flags = *argv;
 116         if (*flags >= '0' && *flags <= '7') {
 117                 errno = 0;
 118                 val = strtol(flags, &ep, 8);
 119                 if (val < 0)
 120                         errno = ERANGE;
 121                 if (errno)
 122                         err(1, "invalid flags: %s", flags);
 123                 if (*ep)
 124                         errx(1, "invalid flags: %s", flags);
 125                 set = val;
 126                 oct = 1;
 127         } else {
 128                 if (strtofflags(&flags, &set, &clear))
 129                         errx(1, "invalid flag: %s", flags);
 130                 clear = ~clear;
 131                 oct = 0;
 132         }
 133
 134         if ((ftsp = fts_open(++argv, fts_options , 0)) == NULL)
 135                 err(1, NULL);
 136
 137         for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
 138                 switch (p->fts_info) {
 139                 case FTS_D:
 140                         if (!Rflag)             /* Change it at FTS_DP if we're recursive. */
 141                                 fts_set(ftsp, p, FTS_SKIP);
 142                         continue;
 143                 case FTS_DNR:                   /* Warn, chflag, continue. */
 144                         warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
 145                         rval = 1;
 146                         break;
 147                 case FTS_ERR:                   /* Warn, continue. */
 148                 case FTS_NS:
 149                         warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
 150                         rval = 1;
 151                         continue;
 152                 case FTS_SL:                    /* Ignore. */
 153                 case FTS_SLNONE:
 154                         /*
 155                          * The only symlinks that end up here are ones that
 156                          * don't point to anything and ones that we found
 157                          * doing a physical walk.
 158                          */
 159                         if (!hflag)
 160                                 continue;
 161                         /* FALLTHROUGH */
 162                 default:
 163                         break;
 164                 }
 165                 if (oct) {
 166                         if (!(*change_flags)(p->fts_accpath, set))
 167                                 continue;
 168                 } else {
 169                         p->fts_statp->st_flags |= set;
 170                         p->fts_statp->st_flags &= clear;
 171                         if (!(*change_flags)(p->fts_accpath,
 172                                     (u_long)p->fts_statp->st_flags))
 173                                 continue;
 174                 }
 175                 warn("%s", p->fts_path);
 176                 rval = 1;
 177         }
 178         if (errno)
 179                 err(1, "fts_read");
 180         exit(rval);
 181 }
 182
 183 static void
 184 usage(void)
 185 {
 186         fprintf(stderr,
 187             "usage: chflags [-h] [-R [-H | -L | -P]] flags file ...\n");
 188         exit(1);
 189 }