StdLib: Add directory access functions to PosixLib.

[mirror_edk2.git] / StdLib / PosixLib / Gen / closedir.c

diff --git a/StdLib/PosixLib/Gen/closedir.c b/StdLib/PosixLib/Gen/closedir.c
new file mode 100644 (file)
index 0000000..e5863b5
--- /dev/null
+++ b/StdLib/PosixLib/Gen/closedir.c
@@ -0,0 +1,88 @@
+/** @file\r
+    Close an open directory.\r
+\r
+    Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>\r
+    This program and the accompanying materials\r
+    are licensed and made available under the terms and conditions of the BSD License\r
+    which accompanies this distribution.  The full text of the license may be found at\r
+    http://opensource.org/licenses/bsd-license.php\r
+\r
+    THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+    WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+    Copyright (c) 1983, 1993\r
+     Regents of the University of California.  All rights reserved.\r
+\r
+    Redistribution and use in source and binary forms, with or without\r
+    modification, are permitted provided that the following conditions\r
+    are met:\r
+    1. Redistributions of source code must retain the above copyright\r
+       notice, this list of conditions and the following disclaimer.\r
+    2. Redistributions in binary form must reproduce the above copyright\r
+       notice, this list of conditions and the following disclaimer in the\r
+       documentation and/or other materials provided with the distribution.\r
+    3. Neither the name of the University nor the names of its contributors\r
+       may be used to endorse or promote products derived from this software\r
+       without specific prior written permission.\r
+\r
+    THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND\r
+    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
+    ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE\r
+    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
+    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r
+    OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
+    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
+    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r
+    OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r
+    SUCH DAMAGE.\r
+\r
+    NetBSD: closedir.c,v 1.15 2006/05/17 20:36:50 christos Exp\r
+    closedir.c  8.1 (Berkeley) 6/10/93\r
+**/\r
+#include <sys/cdefs.h>\r
+\r
+#include  <namespace.h>\r
+#include  <reentrant.h>\r
+#include  <extern.h>\r
+#include <sys/types.h>\r
+\r
+#include <assert.h>\r
+#include <dirent.h>\r
+#include <errno.h>\r
+#include <stdlib.h>\r
+#include <unistd.h>\r
+\r
+#ifdef __weak_alias\r
+__weak_alias(closedir,_closedir)\r
+#endif\r
+\r
+/*\r
+ * close a directory.\r
+ */\r
+int\r
+closedir(DIR *dirp)\r
+{\r
+  int fd;\r
+\r
+  _DIAGASSERT(dirp != NULL);\r
+\r
+#ifdef _REENTRANT\r
+  if (__isthreaded)\r
+    mutex_lock((mutex_t *)dirp->dd_lock);\r
+#endif\r
+  fd = dirp->dd_fd;\r
+  dirp->dd_fd = -1;\r
+  dirp->dd_loc = 0;\r
+  free(dirp->dd_buf);\r
+\r
+#ifdef _REENTRANT\r
+  if (__isthreaded) {\r
+    mutex_unlock((mutex_t *)dirp->dd_lock);\r
+    mutex_destroy((mutex_t *)dirp->dd_lock);\r
+    free(dirp->dd_lock);\r
+  }\r
+#endif\r
+  free((void *)dirp);\r
+  return(close(fd));\r
+}\r