Added initial cut at miniIMFS which leaves out memfile and directory

readdir support.  The next step is to add a mount table and configure
either the miniIMFS or the full IMFS at the application level.

1 files changed, 8 insertions, 98 deletions

diff --git a/c/src/lib/libc/imfs_init.c b/c/src/lib/libc/imfs_init.c
index a38fa89c33..8f44a4e2cd 100644
--- a/c/src/lib/libc/imfs_init.c
+++ b/c/src/lib/libc/imfs_init.c
@@ -26,7 +26,7 @@
 #include <stdio.h>
 #endif
 
-/*
+/*  
  *  IMFS file system operations table
  */
 
@@ -44,7 +44,7 @@ rtems_filesystem_operations_table  IMFS_ops = {
   IMFS_initialize,
   IMFS_unmount,
   IMFS_fsunmount,
-  IMFS_utime, 
+  IMFS_utime,
   IMFS_evaluate_link,
   IMFS_symlink,
   IMFS_readlink
@@ -58,101 +58,11 @@ int IMFS_initialize(
   rtems_filesystem_mount_table_entry_t *temp_mt_entry
 )
 {
-  IMFS_fs_info_t                        *fs_info;
-  IMFS_jnode_t                          *jnode;
-
-  /*
-   *  Create the root node
-   */
-
-  temp_mt_entry->mt_fs_root.node_access = IMFS_create_node(
-    NULL,
-    IMFS_DIRECTORY,
-    "",
-    ( S_IRWXO | S_IRWXG| S_IRWXU ),
-    NULL
-  );
-
-  temp_mt_entry->mt_fs_root.handlers    = &IMFS_directory_handlers;
-  temp_mt_entry->mt_fs_root.ops         = &IMFS_ops;
-  temp_mt_entry->pathconf_limits_and_options = IMFS_LIMITS_AND_OPTIONS;
-
-  /*
-   * Create custom file system data.
-   */
-  fs_info = calloc( 1, sizeof( IMFS_fs_info_t ) );
-  if ( !fs_info ){
-    free(temp_mt_entry->mt_fs_root.node_access);
-    return 1;
-  }
-  temp_mt_entry->fs_info = fs_info;
-
-  /*
-   * Set st_ino for the root to 1.
-   */
-
-  fs_info->ino_count   = 1;
-
-  jnode = temp_mt_entry->mt_fs_root.node_access;
-  jnode->st_ino = fs_info->ino_count;
-
-  return 0;
-}
-
-#define jnode_get_control( jnode ) \
-  (&jnode->info.directory.Entries)
-
-#define jnode_has_no_children( jnode )  \
-  Chain_Is_empty( jnode_get_control( jnode ) )
-
-#define jnode_has_children( jnode ) \
-  ( ! jnode_has_no_children( jnode ) )
-
-#define jnode_get_first_child( jnode ) \
-    ((IMFS_jnode_t *)( Chain_Head( jnode_get_control( jnode ) )->next))
-
-
-int IMFS_fsunmount(
-  rtems_filesystem_mount_table_entry_t *temp_mt_entry
-)
-{
-   IMFS_jnode_t                     *jnode;
-   IMFS_jnode_t                     *next;
-   rtems_filesystem_location_info_t loc;       
-   int                              result = 0;
-
-   /* 
-    * Traverse tree that starts at the mt_fs_root and deallocate memory 
-    * associated memory space
-    */
-    
-   jnode = (IMFS_jnode_t *)temp_mt_entry->mt_fs_root.node_access;
-
-   do {
-     next = jnode->Parent;
-     loc.node_access = (void *)jnode;
-
-     if ( jnode->type != IMFS_DIRECTORY ) {
-        result = IMFS_unlink( &loc );
-        if (result != 0)
-          return -1;
-        jnode = next;
-     } else if ( jnode_has_no_children( jnode ) ) {
-        result = IMFS_unlink( &loc );
-        if (result != 0)
-          return -1;
-        jnode = next;
-     }
-     if ( jnode != NULL ) {
-       if ( jnode->type == IMFS_DIRECTORY ) {
-         if ( jnode_has_children( jnode ) )
-           jnode = jnode_get_first_child( jnode );
-       }
-     }
-   } while (jnode != NULL);
-
+   IMFS_initialize_support(
+     temp_mt_entry,
+     &IMFS_ops,
+     &IMFS_memfile_handlers,
+     &IMFS_directory_handlers
+   );
    return 0;
 }
-
-
-