1 files changed, 74 insertions, 0 deletions
diff --git a/StdLib/LibC/Stdio/fseek.c b/StdLib/LibC/Stdio/fseek.c
new file mode 100644
index 0000000000..ac06f29fcb
--- /dev/null
+++ b/StdLib/LibC/Stdio/fseek.c
@@ -0,0 +1,74 @@
+/** @file
+    Implementation of fseek as declared in <stdio.h>.
+
+    Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
+    This program and the accompanying materials are licensed and made available
+    under the terms and conditions of the BSD License that accompanies this
+    distribution.  The full text of the license may be found at
+    http://opensource.org/licenses/bsd-license.php.
+
+    THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+    WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+    Copyright (c) 1990, 1993
+    The Regents of the University of California.  All rights reserved.
+
+    This code is derived from software contributed to The NetBSD Foundation
+    by David Laight.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+      - Redistributions of source code must retain the above copyright
+        notice, this list of conditions and the following disclaimer.
+      - Redistributions in binary form must reproduce the above copyright
+        notice, this list of conditions and the following disclaimer in the
+        documentation and/or other materials provided with the distribution.
+      - Neither the name of the University nor the names of its contributors
+        may be used to endorse or promote products derived from this software
+        without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+    ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+    POSSIBILITY OF SUCH DAMAGE.
+
+    NetBSD: fseek.c,v 1.22 2006/01/26 10:48:18 kleink Exp
+**/
+#include  <LibConfig.h>
+#include <sys/EfiCdefs.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "namespace.h"
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "reentrant.h"
+#include "local.h"
+
+/*
+ * Seek the given file to the given offset.
+ * Zero extend the offset if SEEK_SET to allow access to 4GB files
+ */
+int
+fseek(FILE *fp, long l_offset, int whence)
+{
+  off_t offset;
+
+  if (whence == SEEK_SET)
+    offset = (off_t)((UINT64)l_offset);   // Coerce to unsigned to prevent sign extension
+  else
+    offset = (off_t)l_offset;                  // OK for this one to be negative
+  return fseeko(fp, offset, whence);
+}