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/bin/chflags/chflags.c,v 1.24 2008/03/09 12:10:24 rwatson Exp $
  36  * $DragonFly: src/usr.bin/chflags/chflags.c,v 1.8 2008/11/11 06:56:47 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, newflags, set;
  59         long val;
  60         int Hflag, Lflag, Rflag, fflag, hflag, vflag;
  61         int ch, fts_options, oct, rval;
  62         char *flags, *ep;
  63         int (*change_flags)(const char *, unsigned long);
  64
  65         Hflag = Lflag = Rflag = fflag = hflag = vflag = 0;
  66         while ((ch = getopt(argc, argv, "HLPRfhv")) != -1)
  67                 switch (ch) {
  68                 case 'H':
  69                         Hflag = 1;
  70                         Lflag = 0;
  71                         break;
  72                 case 'L':
  73                         Lflag = 1;
  74                         Hflag = 0;
  75                         break;
  76                 case 'P':
  77                         Hflag = Lflag = 0;
  78                         break;
  79                 case 'R':
  80                         Rflag = 1;
  81                         break;
  82                 case 'f':
  83                         fflag = 1;
  84                         break;
  85                 case 'h':
  86                         hflag = 1;
  87                         break;
  88                 case 'v':
  89                         vflag++;
  90                         break;
  91                 default:
  92                         usage();
  93                 }
  94         argv += optind;
  95         argc -= optind;
  96
  97         if (argc < 2)
  98                 usage();
  99
 100         if (Rflag) {
 101                 fts_options = FTS_PHYSICAL;
 102                 if (hflag) {
 103                         errx(1, "the -R and -h options "
 104                                 "may not be specified together");
 105                 }
 106                 if (Hflag)
 107                         fts_options |= FTS_COMFOLLOW;
 108                 if (Lflag) {
 109                         fts_options &= ~FTS_PHYSICAL;
 110                         fts_options |= FTS_LOGICAL;
 111                 }
 112         } else
 113                 fts_options = FTS_LOGICAL;
 114
 115 #if __DragonFly_version >= 200101
 116         if (hflag)
 117                 change_flags = lchflags;
 118         else
 119 #endif
 120                 change_flags = chflags;
 121
 122         flags = *argv;
 123         if (*flags >= '0' && *flags <= '7') {
 124                 errno = 0;
 125                 val = strtol(flags, &ep, 8);
 126                 if (val < 0)
 127                         errno = ERANGE;
 128                 if (errno)
 129                         err(1, "invalid flags: %s", flags);
 130                 if (*ep)
 131                         errx(1, "invalid flags: %s", flags);
 132                 set = val;
 133                 oct = 1;
 134         } else {
 135                 if (strtofflags(&flags, &set, &clear))
 136                         errx(1, "invalid flag: %s", flags);
 137                 clear = ~clear;
 138                 oct = 0;
 139         }
 140
 141         if ((ftsp = fts_open(++argv, fts_options , 0)) == NULL)
 142                 err(1, NULL);
 143
 144         for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
 145                 switch (p->fts_info) {
 146                 case FTS_D:
 147                         if (!Rflag)             /* Change it at FTS_DP if we're recursive. */
 148                                 fts_set(ftsp, p, FTS_SKIP);
 149                         continue;
 150                 case FTS_DNR:                   /* Warn, chflag, continue. */
 151                         warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
 152                         rval = 1;
 153                         break;
 154                 case FTS_ERR:                   /* Warn, continue. */
 155                 case FTS_NS:
 156                         warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
 157                         rval = 1;
 158                         continue;
 159                 case FTS_SL:                    /* Ignore. */
 160                 case FTS_SLNONE:
 161                         /*
 162                          * The only symlinks that end up here are ones that
 163                          * don't point to anything and ones that we found
 164                          * doing a physical walk.
 165                          */
 166                         if (!hflag)
 167                                 continue;
 168                         /* FALLTHROUGH */
 169                 default:
 170                         break;
 171                 }
 172                 if (oct)
 173                         newflags = set;
 174                 else
 175                         newflags = (p->fts_statp->st_flags | set) & clear;
 176                 if (newflags == p->fts_statp->st_flags)
 177                         continue;
 178                 if ((*change_flags)(p->fts_accpath, newflags) && !fflag) {
 179                         warn("%s", p->fts_path);
 180                         rval = 1;
 181                 } else if (vflag) {
 182                         printf("%s", p->fts_path);
 183                         if (vflag > 1)
 184                                 printf(": 0%lo -> 0%lo",
 185                                     (u_long)p->fts_statp->st_flags,
 186                                     newflags);
 187                         printf("\n");
 188                 }
 189         }
 190         if (errno)
 191                 err(1, "fts_read");
 192         exit(rval);
 193 }
 194
 195 static void
 196 usage(void)
 197 {
 198         fprintf(stderr,
 199             "usage: chflags [-fhv] [-R [-H | -L | -P]] flags file ...\n");
 200         exit(1);
 201 }