toolchain/gcc/newlib/libc/posix/closedir.c

   1 #ifndef HAVE_OPENDIR
   2
   3 /*
   4  * Copyright (c) 1983 Regents of the University of California.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the University of
  18  *      California, Berkeley and its contributors.
  19  * 4. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #if defined(LIBC_SCCS) && !defined(lint)
  37 static char sccsid[] = "@(#)closedir.c  5.9 (Berkeley) 2/23/91";
  38 #endif /* LIBC_SCCS and not lint */
  39
  40 #include <sys/types.h>
  41 #include <dirent.h>
  42 #include <stdlib.h>
  43 #include <unistd.h>
  44 #include <sys/lock.h>
  45
  46 extern void _cleanupdir (DIR *dirp);
  47
  48 /*
  49  * close a directory.
  50  */
  51 int
  52 _DEFUN(closedir, (dirp),
  53        register DIR *dirp)
  54 {
  55         int fd, rc;
  56
  57 #ifdef HAVE_DD_LOCK
  58         __lock_acquire_recursive(dirp->dd_lock);
  59 #endif
  60         rc = 0;
  61         fd = dirp->dd_fd;
  62         if (fd != -1) {
  63                 dirp->dd_fd = -1;
  64                 dirp->dd_loc = 0;
  65                 (void)free((void *)dirp->dd_buf);
  66                 (void)free((void *)dirp);
  67                 rc = close(fd);
  68                 _cleanupdir(dirp);
  69         }
  70 #ifdef HAVE_DD_LOCK
  71         __lock_release_recursive(dirp->dd_lock);
  72         __lock_close_recursive(dirp->dd_lock);
  73 #endif
  74         return rc;
  75 }
  76
  77 #endif /* ! HAVE_OPENDIR */