1 files changed, 99 insertions, 0 deletions
diff --git a/cpukit/libfs/src/rfs/rtems-rfs-link.h b/cpukit/libfs/src/rfs/rtems-rfs-link.h
new file mode 100644
index 0000000000..d80db0195c
--- /dev/null
+++ b/cpukit/libfs/src/rfs/rtems-rfs-link.h
@@ -0,0 +1,99 @@
+/*
+ *  COPYRIGHT (c) 2010 Chris Johns <chrisj@rtems.org>
+ *
+ *  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.
+ *
+ *  $Id$
+ */
+/**
+ * @file
+ *
+ * @ingroup rtems-rfs
+ *
+ * RTEMS File System Link Support
+ *
+ * This file provides the link support functions.
+ */
+
+#if !defined (_RTEMS_RFS_LINK_H_)
+#define _RTEMS_RFS_LINK_H_
+
+#include <dirent.h>
+
+#include <rtems/rfs/rtems-rfs-file-system.h>
+#include <rtems/rfs/rtems-rfs-inode.h>
+
+/**
+ * Create a link.
+ *
+ * @param fs The file system.
+ * @param name The name of the link.
+ * @param length The length of the name.
+ * @param parent The inode number of the parent directory.
+ * @param target The inode of the target.
+ * @return int The error number (errno). No error if 0.
+ */
+int rtems_rfs_link (rtems_rfs_file_system* fs,
+                    const char*            name,
+                    int                    length,
+                    rtems_rfs_ino          parent,
+                    rtems_rfs_ino          target);
+
+/**
+ * Unlink the node from the parent directory. A directory offset for the target
+ * entry is required because links cause a number of inode numbers to appear in
+ * a single directory so scanning does not work.
+ *
+ * @param fs The file system.
+ * @param parent The inode number of the parent directory.
+ * @param target The inode of the target.
+ * @param doff Parent directory entry offset for the target entry.
+ * @param dir If true unlinking of directory nodes is allowed.
+ * @return int The error number (errno). No error if 0.
+ */
+int rtems_rfs_unlink (rtems_rfs_file_system* fs,
+                      rtems_rfs_ino          parent,
+                      rtems_rfs_ino          target,
+                      uint32_t               doff,
+                      bool                   dir);
+
+/**
+ * Symbolic link is an inode that has a path attached.
+ *
+ * @param fs The file system data.
+ * @param name The name of the node.
+ * @param length The length of the name of the node.
+ * @param link The link path attached to the symlink inode.
+ * @param link_length The length of the link path.
+ * @param parent The parent inode number.
+ * @return int The error number (errno). No error if 0.
+ */
+int rtems_rfs_symlink (rtems_rfs_file_system* fs,
+                       const char*            name,
+                       int                    length,
+                       const char*            link,
+                       int                    link_length,
+                       uid_t                  uid,
+                       gid_t                  gid,
+                       rtems_rfs_ino          parent);
+
+/**
+ * Read a symbolic link into the provided buffer returning the link of link
+ * name.
+ *
+ * @param fs The file system data.
+ * @param link The link inode number to read.
+ * @param path The buffer to write the link path into.
+ * @param size The size of the buffer.
+ * @param length Set to the length of the link path.
+ * @return int The error number (errno). No error if 0.
+ */
+int rtems_rfs_symlink_read (rtems_rfs_file_system* fs,
+                            rtems_rfs_ino          link,
+                            char*                  path,
+                            size_t                 size,
+                            size_t*                length);
+
+#endif