From a4f07581502ee212aa45e7b0049fdd126dd10b40 Mon Sep 17 00:00:00 2001
From: Eric Andersen <andersen@codepoet.org>
Date: Sat, 11 May 2002 00:26:15 +0000
Subject: Implement readdir_r.  Audit for proper thread safety and locking. 
 -Erik

---
 libc/misc/dirent/closedir.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'libc/misc/dirent/closedir.c')

diff --git a/libc/misc/dirent/closedir.c b/libc/misc/dirent/closedir.c
index 3b6337b5f..c9486ac56 100644
--- a/libc/misc/dirent/closedir.c
+++ b/libc/misc/dirent/closedir.c
@@ -19,8 +19,14 @@ int closedir(DIR * dir)
 		__set_errno(EBADF);
 		return -1;
 	}
+#ifdef _POSIX_THREADS
+	pthread_mutex_lock(dir->dd_lock);
+#endif
 	fd = dir->dd_fd;
 	dir->dd_fd = -1;
+#ifdef _POSIX_THREADS
+	pthread_mutex_unlock(dir->dd_lock);
+#endif
 	free(dir->dd_buf);
 	free(dir);
 	return close(fd);
-- 
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