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. 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  * @(#) Copyright (c) 1992, 1993, 1994 The Regents of the University of California.  All rights reserved.
  30  * @(#)chflags.c        8.5 (Berkeley) 4/1/94
  31  * $FreeBSD: head/bin/chflags/chflags.c 282208 2015-04-29 00:49:00Z smh $
  32  */
  33
  34 #include <sys/param.h>
  35 #include <sys/types.h>
  36 #include <sys/stat.h>
  37
  38 #include <err.h>
  39 #include <errno.h>
  40 #include <fcntl.h>
  41 #include <fts.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45 #include <unistd.h>
  46
  47 static void     usage(void);
  48
  49 int
  50 main(int argc, char *argv[])
  51 {
  52         FTS *ftsp;
  53         FTSENT *p;
  54         u_long clear, newflags, set;
  55         long val;
  56         int Hflag, Lflag, Rflag, fflag, hflag, vflag;
  57         int ch, fts_options, oct, rval;
  58         char *flags, *ep;
  59
  60         Hflag = Lflag = Rflag = fflag = hflag = vflag = 0;
  61         while ((ch = getopt(argc, argv, "HLPRfhv")) != -1)
  62                 switch (ch) {
  63                 case 'H':
  64                         Hflag = 1;
  65                         Lflag = 0;
  66                         break;
  67                 case 'L':
  68                         Lflag = 1;
  69                         Hflag = 0;
  70                         break;
  71                 case 'P':
  72                         Hflag = Lflag = 0;
  73                         break;
  74                 case 'R':
  75                         Rflag = 1;
  76                         break;
  77                 case 'f':
  78                         fflag = 1;
  79                         break;
  80                 case 'h':
  81                         hflag = 1;
  82                         break;
  83                 case 'v':
  84                         vflag++;
  85                         break;
  86                 case '?':
  87                 default:
  88                         usage();
  89                 }
  90         argv += optind;
  91         argc -= optind;
  92
  93         if (argc < 2)
  94                 usage();
  95
  96         if (Rflag) {
  97                 if (hflag)
  98                         errx(1, "the -R and -h options may not be "
  99                             "specified together.");
 100                 if (Lflag) {
 101                         fts_options = FTS_LOGICAL;
 102                 } else {
 103                         fts_options = FTS_PHYSICAL;
 104
 105                         if (Hflag) {
 106                                 fts_options |= FTS_COMFOLLOW;
 107                         }
 108                 }
 109         } else if (hflag) {
 110                 fts_options = FTS_PHYSICAL;
 111         } else {
 112                 fts_options = FTS_LOGICAL;
 113         }
 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                 int atflag;
 139
 140                 if ((fts_options & FTS_LOGICAL) ||
 141                     ((fts_options & FTS_COMFOLLOW) &&
 142                     p->fts_level == FTS_ROOTLEVEL))
 143                         atflag = 0;
 144                 else
 145                         atflag = AT_SYMLINK_NOFOLLOW;
 146
 147                 switch (p->fts_info) {
 148                 case FTS_D:     /* Change it at FTS_DP if we're recursive. */
 149                         if (!Rflag)
 150                                 fts_set(ftsp, p, FTS_SKIP);
 151                         continue;
 152                 case FTS_DNR:                   /* Warn, chflags. */
 153                         warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
 154                         rval = 1;
 155                         break;
 156                 case FTS_ERR:                   /* Warn, continue. */
 157                 case FTS_NS:
 158                         warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
 159                         rval = 1;
 160                         continue;
 161                 default:
 162                         break;
 163                 }
 164                 if (oct)
 165                         newflags = set;
 166                 else
 167                         newflags = (p->fts_statp->st_flags | set) & clear;
 168                 if (newflags == p->fts_statp->st_flags)
 169                         continue;
 170                 if (chflagsat(AT_FDCWD, p->fts_accpath, newflags,
 171                     atflag) == -1 && !fflag) {
 172                         warn("%s", p->fts_path);
 173                         rval = 1;
 174                 } else if (vflag) {
 175                         printf("%s", p->fts_path);
 176                         if (vflag > 1)
 177                                 printf(": 0%lo -> 0%lo",
 178                                     (u_long)p->fts_statp->st_flags,
 179                                     newflags);
 180                         printf("\n");
 181                 }
 182         }
 183         if (errno)
 184                 err(1, "fts_read");
 185         exit(rval);
 186 }
 187
 188 static void
 189 usage(void)
 190 {
 191         fprintf(stderr,
 192             "usage: chflags [-fhv] [-R [-H | -L | -P]] flags file ...\n");
 193         exit(1);
 194 }