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rmdir.c

解説を見る。

/* rmdir.c -- BSD compatible remove directory function for System V
   Copyright (C) 1988, 1990 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA.  */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#ifndef HAVE_RMDIR

#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#include <sys/stat.h>

#include <errno.h>
#ifndef errno
extern int errno;
#endif

#ifdef STAT_MACROS_BROKEN
#undef S_ISDIR
#endif

#if !defined(S_ISDIR) && defined(S_IFDIR)
#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
#endif

#include "safe-stat.h"

/* rmdir adapted from GNU tar.  */

/* Remove directory DPATH.
   Return 0 if successful, -1 if not.  */

int
rmdir (dpath)
     char *dpath;
{
  int cpid, status;
  struct stat statbuf;

  if (SAFE_STAT (dpath, &statbuf) != 0)
    return -1;                  /* errno already set */

  if (!S_ISDIR (statbuf.st_mode))
    {
      errno = ENOTDIR;
      return -1;
    }

  cpid = fork ();
  switch (cpid)
    {
    case -1:                    /* cannot fork */
      return -1;                /* errno already set */

    case 0:                     /* child process */
      execl ("/bin/rmdir", "rmdir", dpath, (char *) 0);
      _exit (1);

    default:                    /* parent process */

      /* Wait for kid to finish.  */

      while (wait (&status) != cpid)
        /* Do nothing.  */ ;

      if (status & 0xFFFF)
        {

          /* /bin/rmdir failed.  */

          errno = EIO;
          return -1;
        }
      return 0;
    }
}

#endif

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