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/*
* IMFS_link
*
* The following rouine creates a new link node under parent with the
* name given in name. The link node is set to point to the node at
* to_loc.
*
* 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 <errno.h>
#include "imfs.h"
#include "libio_.h"
int IMFS_link(
rtems_filesystem_location_info_t *to_loc, /* IN */
rtems_filesystem_location_info_t *parent_loc, /* IN */
const char *token /* IN */
)
{
IMFS_types_union info;
IMFS_jnode_t *new_node;
char new_name[ IMFS_NAME_MAX + 1 ];
int i;
/*
* Verify this node can be linked to.
*/
info.hard_link.link_node = to_loc->node_access;
if ( info.hard_link.link_node->st_nlink >= LINK_MAX )
set_errno_and_return_minus_one( EMLINK );
/*
* Remove any separators at the end of the string.
*/
IMFS_get_token( token, new_name, &i );
/*
* Create a new link node.
*/
new_node = IMFS_create_node(
parent_loc,
IMFS_HARD_LINK,
new_name,
( S_IFLNK | ( S_IRWXU | S_IRWXG | S_IRWXO )),
&info
);
if ( !new_node )
set_errno_and_return_minus_one( ENOMEM );
/*
* Increment the link count of the node being pointed to.
*/
info.hard_link.link_node->st_nlink++;
IMFS_update_ctime( info.hard_link.link_node );
return 0;
}
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