[rtems commit] Filesystem: New function

[Sebastian Huber]

Module:    rtems
Branch:    master
Commit:    adef4e469672039321f3cfbe77306ff5dbbe5467
Changeset: http://git.rtems.org/rtems/commit/?id=adef4e469672039321f3cfbe77306ff5dbbe5467

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Fri Feb 24 09:53:22 2012 +0100

Filesystem: New function

New function rtems_filesystem_default_lseek_success().

---

 cpukit/libcsupport/include/rtems/libio.h          |   20 +++++++++++---
 cpukit/libfs/Makefile.am                          |    1 +
 cpukit/libfs/src/defaults/default_lseek_success.c |   29 +++++++++++++++++++++
 3 files changed, 46 insertions(+), 4 deletions(-)

diff --git a/cpukit/libcsupport/include/rtems/libio.h b/cpukit/libcsupport/include/rtems/libio.h
index 4a09e0c..e17a438 100644
--- a/cpukit/libcsupport/include/rtems/libio.h
+++ b/cpukit/libcsupport/include/rtems/libio.h
@@ -844,13 +844,14 @@ typedef int (*rtems_filesystem_ioctl_t)(
  * @brief Moves the read/write file offset.
  *
  * @param[in, out] iop The IO pointer.
- * @param[in] offset The new offset.
- * @param[in] whence The reference position of the new offset.
+ * @param[in] offset The offset.
+ * @param[in] whence The reference position for the offset.
  *
  * @retval non-negative The new offset from the beginning of the file.
  * @retval -1 An error occured.  The errno is set to indicate the error.
  *
- * @see rtems_filesystem_default_lseek().
+ * @see rtems_filesystem_default_lseek() and
+ * rtems_filesystem_default_lseek_success().
  */
 typedef off_t (*rtems_filesystem_lseek_t)(
   rtems_libio_t *iop,
@@ -1019,7 +1020,18 @@ int rtems_filesystem_default_ioctl(
  */
 off_t rtems_filesystem_default_lseek(
   rtems_libio_t *iop,
-  off_t          length,
+  off_t          offset,
+  int            whence
+);
+
+/**
+ * @retval 0 Always.
+ *
+ * @see rtems_filesystem_lseek_t.
+ */
+off_t rtems_filesystem_default_lseek_success(
+  rtems_libio_t *iop,
+  off_t          offset,
   int            whence
 );
 
diff --git a/cpukit/libfs/Makefile.am b/cpukit/libfs/Makefile.am
index ad10348..18c4c47 100644
--- a/cpukit/libfs/Makefile.am
+++ b/cpukit/libfs/Makefile.am
@@ -21,6 +21,7 @@ libdefaultfs_a_SOURCES = \
     src/defaults/default_chown.c \
     src/defaults/default_fcntl.c src/defaults/default_fsmount.c \
     src/defaults/default_ftruncate.c src/defaults/default_lseek.c \
+    src/defaults/default_lseek_success.c \
     src/defaults/default_readlink.c src/defaults/default_statvfs.c \
     src/defaults/default_utime.c \
     src/defaults/default_fdatasync.c  src/defaults/default_fstat.c \
diff --git a/cpukit/libfs/src/defaults/default_lseek_success.c b/cpukit/libfs/src/defaults/default_lseek_success.c
new file mode 100644
index 0000000..d6a1cb4
--- /dev/null
+++ b/cpukit/libfs/src/defaults/default_lseek_success.c
@@ -0,0 +1,29 @@
+
+/*
+ * Copyright (c) 2012 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Obere Lagerstr. 30
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems at embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ */
+
+#if HAVE_CONFIG_H
+  #include "config.h"
+#endif
+
+#include <rtems/libio_.h>
+
+off_t rtems_filesystem_default_lseek_success(
+  rtems_libio_t *iop,
+  off_t offset,
+  int whence
+)
+{
+  return 0;
+}