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/*
* IMFS_create_node()
*
* Routine to create a new in memory file system node.
*
* 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.
*
* $Id$
*/
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "imfs.h"
#include <rtems/libio_.h>
IMFS_jnode_t *IMFS_create_node(
rtems_filesystem_location_info_t *parent_loc,
IMFS_jnode_types_t type,
char *name,
mode_t mode,
IMFS_types_union *info
)
{
IMFS_jnode_t *node;
struct timeval tv;
IMFS_jnode_t *parent = NULL;
IMFS_fs_info_t *fs_info;
char *sym_name;
if ( parent_loc != NULL )
parent = parent_loc->node_access;
/*
* Allocate an IMFS jnode
*/
node = calloc( 1, sizeof( IMFS_jnode_t ) );
if ( !node )
return NULL;
/*
* Fill in the basic information
*/
node->st_nlink = 1;
node->type = type;
strncpy( node->name, name, IMFS_NAME_MAX );
/*
* Fill in the mode and permission information for the jnode structure.
*/
node->st_mode = mode & ~rtems_filesystem_umask;
#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.
*/
gettimeofday( &tv, 0 );
node->stat_atime = (time_t) tv.tv_sec;
node->stat_mtime = (time_t) tv.tv_sec;
node->stat_ctime = (time_t) tv.tv_sec;
/*
* Set the type specific information
*/
switch (type) {
case IMFS_DIRECTORY:
Chain_Initialize_empty(&node->info.directory.Entries);
break;
case IMFS_HARD_LINK:
node->info.hard_link.link_node = info->hard_link.link_node;
break;
case IMFS_SYM_LINK:
sym_name = calloc( 1, strlen( info->sym_link.name ) + 1 );
strcpy( sym_name, info->sym_link.name );
node->info.sym_link.name = sym_name;
break;
case IMFS_DEVICE:
node->info.device.major = info->device.major;
node->info.device.minor = info->device.minor;
break;
case IMFS_LINEAR_FILE:
node->info.linearfile.size = 0;
node->info.linearfile.direct = 0;
case IMFS_MEMORY_FILE:
node->info.file.size = 0;
node->info.file.indirect = 0;
node->info.file.doubly_indirect = 0;
node->info.file.triply_indirect = 0;
break;
default:
assert(0);
break;
}
/*
* If this node has a parent, then put it in that directory list.
*/
if ( parent ) {
Chain_Append( &parent->info.directory.Entries, &node->Node );
node->Parent = parent;
fs_info = parent_loc->mt_entry->fs_info;
node->st_ino = ++fs_info->ino_count;
}
return node;
}
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