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  * 4. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #if 0
  31 #ifndef lint
  32 static const char copyright[] =
  33 "@(#) Copyright (c) 1992, 1993, 1994\n\
  34         The Regents of the University of California.  All rights reserved.\n";
  35 #endif
  36
  37 #ifndef lint
  38 static char sccsid[] = "@(#)chflags.c   8.5 (Berkeley) 4/1/94";
  39 #endif
  40 #endif
  41
  42 #include <sys/cdefs.h>
  43 __FBSDID("$FreeBSD: src/bin/chflags/chflags.c,v 1.23 2005/05/14 23:23:10 dd Exp $");
  44
  45 #include <sys/types.h>
  46 #include <sys/stat.h>
  47
  48 #include <err.h>
  49 #include <errno.h>
  50 #include <fts.h>
  51 #include <stdio.h>
  52 #include <stdlib.h>
  53 #include <string.h>
  54 #include <unistd.h>
  55
  56 void    usage(void);
  57
  58 int
  59 main(int argc, char *argv[])
  60 {
  61         FTS *ftsp;
  62         FTSENT *p;
  63         u_long clear, set;
  64         long val;
  65         int Hflag, Lflag, Rflag, hflag, ch, fts_options, oct, rval;
  66         char *flags, *ep;
  67         int (*change_flags)(const char *, u_int);
  68
  69         Hflag = Lflag = Rflag = hflag = 0;
  70 #ifdef __APPLE__
  71         while ((ch = getopt(argc, argv, "HLPR")) != -1)
  72 #else /* !__APPLE__ */
  73         while ((ch = getopt(argc, argv, "HLPRh")) != -1)
  74 #endif /* __APPLE__ */
  75                 switch (ch) {
  76                 case 'H':
  77                         Hflag = 1;
  78                         Lflag = 0;
  79                         break;
  80                 case 'L':
  81                         Lflag = 1;
  82                         Hflag = 0;
  83                         break;
  84                 case 'P':
  85                         Hflag = Lflag = 0;
  86                         break;
  87                 case 'R':
  88                         Rflag = 1;
  89                         break;
  90 #ifndef __APPLE__
  91                 case 'h':
  92                         hflag = 1;
  93                         break;
  94 #endif /* !__APPLE__ */
  95                 case '?':
  96                 default:
  97                         usage();
  98                 }
  99         argv += optind;
 100         argc -= optind;
 101
 102         if (argc < 2)
 103                 usage();
 104
 105         if (Rflag) {
 106                 fts_options = FTS_PHYSICAL;
 107                 if (hflag)
 108                         errx(1, "the -R and -h options "
 109                                 "may not be specified together");
 110                 if (Hflag)
 111                         fts_options |= FTS_COMFOLLOW;
 112                 if (Lflag) {
 113                         fts_options &= ~FTS_PHYSICAL;
 114                         fts_options |= FTS_LOGICAL;
 115                 }
 116         } else
 117                 fts_options = FTS_LOGICAL;
 118
 119         /* XXX: Why don't chflags and lchflags have compatible prototypes? */
 120 #ifndef __APPLE__
 121         if (hflag)
 122                 change_flags = (int (*)(const char *, u_int))lchflags;
 123         else
 124 #endif /* !__APPLE__ */
 125                 change_flags = chflags;
 126
 127         flags = *argv;
 128         if (*flags >= '0' && *flags <= '7') {
 129                 errno = 0;
 130                 val = strtol(flags, &ep, 8);
 131                 if (val < 0)
 132                         errno = ERANGE;
 133                 if (errno)
 134                         err(1, "invalid flags: %s", flags);
 135                 if (*ep)
 136                         errx(1, "invalid flags: %s", flags);
 137                 set = val;
 138                 oct = 1;
 139         } else {
 140                 if (strtofflags(&flags, &set, &clear))
 141                         errx(1, "invalid flag: %s", flags);
 142                 clear = ~clear;
 143                 oct = 0;
 144         }
 145
 146         if ((ftsp = fts_open(++argv, fts_options , 0)) == NULL)
 147                 err(1, NULL);
 148
 149         for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
 150                 switch (p->fts_info) {
 151                 case FTS_D:     /* Change it at FTS_DP if we're recursive. */
 152                         if (!Rflag)
 153                                 fts_set(ftsp, p, FTS_SKIP);
 154                         continue;
 155                 case FTS_DNR:                   /* Warn, chflag, continue. */
 156                         warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
 157                         rval = 1;
 158                         break;
 159                 case FTS_ERR:                   /* Warn, continue. */
 160                 case FTS_NS:
 161                         warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
 162                         rval = 1;
 163                         continue;
 164                 case FTS_SL:                    /* Ignore. */
 165                 case FTS_SLNONE:
 166                         /*
 167                          * The only symlinks that end up here are ones that
 168                          * don't point to anything and ones that we found
 169                          * doing a physical walk.
 170                          */
 171                         if (!hflag)
 172                                 continue;
 173                         /* FALLTHROUGH */
 174                 default:
 175                         break;
 176                 }
 177                 if (oct) {
 178                         if (!(*change_flags)(p->fts_accpath, set))
 179                                 continue;
 180                 } else {
 181                         p->fts_statp->st_flags |= set;
 182                         p->fts_statp->st_flags &= clear;
 183                         if (!(*change_flags)(p->fts_accpath,
 184                                     (u_long)p->fts_statp->st_flags))
 185                                 continue;
 186                 }
 187                 warn("%s", p->fts_path);
 188                 rval = 1;
 189         }
 190         if (errno)
 191                 err(1, "fts_read");
 192         exit(rval);
 193 }
 194
 195 void
 196 usage(void)
 197 {
 198         (void)fprintf(stderr,
 199 #ifdef __APPLE__
 200             "usage: chflags [-R [-H | -L | -P]] flags file ...\n");
 201 #else /* !__APPLE__ */
 202             "usage: chflags [-h] [-R [-H | -L | -P]] flags file ...\n");
 203 #endif /* __APPLE__ */
 204         exit(1);
 205 }