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/**
* @file
*
* @brief IMFS Create a New Link Node
* @ingroup IMFS
*/
/*
* COPYRIGHT (c) 1989-2010.
* 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.rtems.org/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include "imfs.h"
int IMFS_link(
const rtems_filesystem_location_info_t *parentloc,
const rtems_filesystem_location_info_t *targetloc,
const char *name,
size_t namelen
)
{
IMFS_types_union info;
IMFS_jnode_t *new_node;
IMFS_jnode_t *target;
target = targetloc->node_access;
info.hard_link.link_node = target;
/*
* Verify this node can be linked to.
*/
if ( target->st_nlink >= LINK_MAX )
rtems_set_errno_and_return_minus_one( EMLINK );
/*
* Create a new link node.
*/
new_node = IMFS_create_node(
parentloc,
IMFS_HARD_LINK,
name,
namelen,
( S_IFLNK | ( S_IRWXU | S_IRWXG | S_IRWXO )),
&info
);
if ( !new_node )
rtems_set_errno_and_return_minus_one( ENOMEM );
/*
* Increment the link count of the node being pointed to.
*/
target->reference_count++;
target->st_nlink++;
IMFS_update_ctime( target );
return 0;
}
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