From 94b357c2b31be20b51784dc6f2ae837d58777cbd Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Fri, 5 Nov 1999 21:10:54 +0000
Subject: Unmount was failing as a side-effect of splitting the rmnod handler
 and not handling every case properly.

---
 c/src/lib/libc/imfs_rmnod.c | 77 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 c/src/lib/libc/imfs_rmnod.c

(limited to 'c/src/lib/libc/imfs_rmnod.c')

diff --git a/c/src/lib/libc/imfs_rmnod.c b/c/src/lib/libc/imfs_rmnod.c
new file mode 100644
index 0000000000..4707722e86
--- /dev/null
+++ b/c/src/lib/libc/imfs_rmnod.c
@@ -0,0 +1,77 @@
+/*
+ *  IMFS Node Removal Handler
+ *
+ *  This file contains the handler used to remove a node when a file type
+ *  does not require special actions.
+ *
+ *  COPYRIGHT (c) 1989-1998.
+ *  On-Line Applications Research Corporation (OAR).
+ *  Copyright assigned to U.S. Government, 1994.
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+#include <rtems.h>
+#include <rtems/libio.h>
+#include "libio_.h"
+
+#include "imfs.h"
+
+/*
+ *  IMFS_rmnod
+ */
+
+int IMFS_rmnod(
+  rtems_filesystem_location_info_t      *pathloc       /* IN */
+)
+{
+  IMFS_jnode_t *the_jnode;  
+
+  the_jnode = (IMFS_jnode_t *) pathloc->node_access;
+
+  /* 
+   * Take the node out of the parent's chain that contains this node 
+   */
+
+  if ( the_jnode->Parent != NULL ) {
+    Chain_Extract( (Chain_Node *) the_jnode );
+    the_jnode->Parent = NULL;
+  }
+
+  /*
+   * Decrement the link counter and see if we can free the space.
+   */
+
+  the_jnode->st_nlink--;
+  IMFS_update_ctime( the_jnode );
+
+  /*
+   * The file cannot be open and the link must be less than 1 to free.
+   */
+
+  if ( !rtems_libio_is_file_open( the_jnode ) && (the_jnode->st_nlink < 1) ) {
+
+    /* 
+     * Is the rtems_filesystem_current is this node?
+     */
+
+    if ( rtems_filesystem_current.node_access == pathloc->node_access )
+       rtems_filesystem_current.node_access = NULL;
+
+    /*
+     * Free memory associated with a memory file.
+     */
+
+    free( the_jnode );
+  }
+
+  return 0;
+
+}
+
+
+
-- 
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