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/*
* IMFS_create_node()
*
* Routine to create a new in memory file system node.
*
* 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.com/license/LICENSE.
*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include "imfs.h"
#include <stdlib.h>
#include <string.h>
IMFS_jnode_t *IMFS_allocate_node(
IMFS_fs_info_t *fs_info,
const IMFS_node_control *node_control,
const char *name,
size_t namelen,
mode_t mode,
const IMFS_types_union *info
)
{
IMFS_jnode_t *node;
struct timeval tv;
if ( namelen > IMFS_NAME_MAX ) {
errno = ENAMETOOLONG;
return NULL;
}
gettimeofday( &tv, 0 );
/*
* Allocate an IMFS jnode
*/
node = calloc( 1, sizeof( IMFS_jnode_t ) );
if ( !node ) {
errno = ENOMEM;
return NULL;
}
/*
* Fill in the basic information
*/
node->reference_count = 1;
node->st_nlink = 1;
memcpy( node->name, name, namelen );
node->name [namelen] = '\0';
node->control = node_control;
/*
* Fill in the mode and permission information for the jnode structure.
*/
node->st_mode = mode;
#if defined(RTEMS_POSIX_API)
node->st_uid = geteuid();
node->st_gid = getegid();
#else
node->st_uid = 0;
node->st_gid = 0;
#endif
/*
* Now set all the times.
*/
node->stat_atime = (time_t) tv.tv_sec;
node->stat_mtime = (time_t) tv.tv_sec;
node->stat_ctime = (time_t) tv.tv_sec;
node->st_ino = ++fs_info->ino_count;
return (*node->control->node_initialize)( node, info );
}
/*
* Create an IMFS filesystem node of an arbitrary type that is NOT
* the root directory node.
*/
IMFS_jnode_t *IMFS_create_node_with_control(
const rtems_filesystem_location_info_t *parentloc,
const IMFS_node_control *node_control,
const char *name,
size_t namelen,
mode_t mode,
const IMFS_types_union *info
)
{
IMFS_fs_info_t *fs_info = parentloc->mt_entry->fs_info;
IMFS_jnode_t *node = IMFS_allocate_node(
fs_info,
node_control,
name,
namelen,
mode,
info
);
if ( node != NULL ) {
IMFS_jnode_t *parent = parentloc->node_access;
/*
* This node MUST have a parent, so put it in that directory list.
*/
IMFS_assert( parent != NULL );
IMFS_add_to_directory( parent, node );
}
return node;
}
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