lib/rmdir.c

   1 /* BSD compatible remove directory function for System V
   2
   3    Copyright (C) 1988, 1990, 1999, 2003 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 2, or (at your option)
   8    any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software Foundation,
  17    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  18
  19 #if HAVE_CONFIG_H
  20 # include <config.h>
  21 #endif
  22
  23 #include <sys/types.h>
  24 #include <sys/stat.h>
  25
  26 #include <errno.h>
  27 #ifndef errno
  28 extern int errno;
  29 #endif
  30
  31 #if STAT_MACROS_BROKEN
  32 # undef S_ISDIR
  33 #endif
  34
  35 #if !defined(S_ISDIR) && defined(S_IFDIR)
  36 # define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
  37 #endif
  38
  39 /* rmdir adapted from GNU tar.  */
  40
  41 /* Remove directory DPATH.
  42    Return 0 if successful, -1 if not.  */
  43
  44 int
  45 rmdir (char const *dpath)
  46 {
  47   pid_t cpid;
  48   int status;
  49   struct stat statbuf;
  50
  51   if (stat (dpath, &statbuf) != 0)
  52     return -1;                  /* errno already set */
  53
  54   if (!S_ISDIR (statbuf.st_mode))
  55     {
  56       errno = ENOTDIR;
  57       return -1;
  58     }
  59
  60   cpid = fork ();
  61   switch (cpid)
  62     {
  63     case -1:                    /* cannot fork */
  64       return -1;                /* errno already set */
  65
  66     case 0:                     /* child process */
  67       execl ("/bin/rmdir", "rmdir", dpath, (char *) 0);
  68       _exit (1);
  69
  70     default:                    /* parent process */
  71
  72       /* Wait for kid to finish.  */
  73
  74       while (wait (&status) != cpid)
  75         /* Do nothing.  */ ;
  76
  77       if (status)
  78         {
  79
  80           /* /bin/rmdir failed.  */
  81
  82           errno = EIO;
  83           return -1;
  84         }
  85       return 0;
  86     }
  87 }