source: rtems/cpukit/libfs/src/devfs/devfs_eval.c @ d40da79b

/*
 *  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 <rtems/seterr.h>
#include <fcntl.h>
#include <assert.h>
#include "devfs.h"

int devFS_evaluate_path(
  const char                        *pathname,
  int                                flags,
  rtems_filesystem_location_info_t  *pathloc
)
{
    int                   i;
    rtems_device_name_t  *device_name_table;

    /* see if 'flags' is valid */
    if ( !rtems_libio_is_valid_perms( flags ) ) {
        assert( 0 );
        rtems_set_errno_and_return_minus_one( EIO );
    }

    /* get the device name table */
    device_name_table = (rtems_device_name_t *)pathloc->node_access;
    if (!device_name_table)
        rtems_set_errno_and_return_minus_one( EFAULT );

    for (i = 0; i < rtems_device_table_size; i++){
        if ((device_name_table[i].device_name) && 
                (strcmp(device_name_table[i].device_name, pathname) == 0)){
            /* find the device, set proper values */
            pathloc->node_access = (void *)&device_name_table[i];
            pathloc->handlers = &devFS_file_handlers;
            pathloc->ops = &devFS_ops;
            pathloc->mt_entry = &rtems_filesystem_root;
            return 0;
        }
    }
    /* no such file or directory */
    rtems_set_errno_and_return_minus_one( ENOENT );
}



int devFS_evaluate_for_make(
   const char                         *path,
   rtems_filesystem_location_info_t   *pathloc,
   const char                        **name
)
{
    /* we do nothing, just set name to path */
   *name = path;
    return 0;
}