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/*
* This file emulates the old Classic RTEMS IO manager directives
* which register and lookup names using the in-memory filesystem.
*
* 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 <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <assert.h>
#include <rtems.h>
#include "libio_.h"
#include "imfs.h"
#if defined(__linux__)
#define S_IFCHR __S_IFCHR
#endif
/*
* rtems_io_register_name
*
* This assumes that all registered devices are character devices.
*/
rtems_status_code rtems_io_register_name(
char *device_name,
rtems_device_major_number major,
rtems_device_minor_number minor
)
{
#if !defined(RTEMS_UNIX)
int status;
dev_t dev;
dev = rtems_filesystem_make_dev_t( major, minor );
status = mknod( device_name, 0777 | S_IFCHR, dev );
/* this is the only error returned by the old version */
if ( status )
return RTEMS_TOO_MANY;
#endif
return RTEMS_SUCCESSFUL;
}
/*
* rtems_io_lookup_name
*
* This version is not reentrant.
*
* XXX - This is dependent upon IMFS and should not be.
* Suggest adding a filesystem routine to fill in the device_info.
*/
rtems_status_code rtems_io_lookup_name(
const char *name,
rtems_driver_name_t **device_info
)
{
#if !defined(RTEMS_UNIX)
IMFS_jnode_t *the_jnode;
rtems_filesystem_location_info_t loc;
static rtems_driver_name_t device;
int result;
rtems_filesystem_node_types_t node_type;
result = rtems_filesystem_evaluate_path( name, 0x00, &loc, TRUE );
the_jnode = loc.node_access;
node_type = (*loc.ops->node_type)( &loc );
if ( (result != 0) || node_type != RTEMS_FILESYSTEM_DEVICE ) {
*device_info = 0;
rtems_filesystem_freenode( &loc );
return RTEMS_UNSATISFIED;
}
device.device_name = (char *) name;
device.device_name_length = strlen( name );
device.major = the_jnode->info.device.major;
device.minor = the_jnode->info.device.minor;
*device_info = &device;
rtems_filesystem_freenode( &loc );
#endif
return RTEMS_SUCCESSFUL;
}
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