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/*

 *  IMFS_find_match_in_dir()

 *

 *  This routine returns the child name in the given directory.

 *

 *  COPYRIGHT (c) 1989-1999.

 *  On-Line Applications Research Corporation (OAR).

 *

 *  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.

 *

 *  imfs_getchild.c,v 1.6 2002/04/08 18:28:58 joel Exp

 */

#if HAVE_CONFIG_H

#include "config.h"

#endif

#include <errno.h>

#include <assert.h>

#include <string.h>

#include "imfs.h"

static char dotname[2] = ".";

static char dotdotname[3] = "..";

IMFS_jnode_t *IMFS_find_match_in_dir(

  IMFS_jnode_t *directory,

  char         *name

)

{

  Chain_Node        *the_node;

  Chain_Control     *the_chain;

  IMFS_jnode_t      *the_jnode;

  /*

   *  Check for fatal errors.  A NULL directory show a problem in the

   *  the IMFS code.

   */

  assert( directory );

  if ( !name )

    return 0;

  assert( name );

  if ( !directory )

    return 0;

  /*

   *  Check for "." and ".."

   */

  if ( !strcmp( name, dotname ) )

    return directory;

  if ( !strcmp( name, dotdotname ) )

    return directory->Parent;

  the_chain = &directory->info.directory.Entries;

  for ( the_node = the_chain->first;

        !_Chain_Is_tail( the_chain, the_node );

        the_node = the_node->next ) {

    the_jnode = (IMFS_jnode_t *) the_node;

    if ( !strcmp( name, the_jnode->name ) )

      return the_jnode;

  }

  return 0;

}