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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [lib/] [libc/] [ioman.c] - Blame information for rev 596

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Line No. Rev Author Line
1 30 unneback
/*
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 *  This file emulates the old Classic RTEMS IO manager directives
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 *  which register and lookup names using the in-memory filesystem.
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 *
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 *  COPYRIGHT (c) 1989-1999.
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 *  On-Line Applications Research Corporation (OAR).
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 *
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 *  The license and distribution terms for this file may be
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 *  found in the file LICENSE in this distribution or at
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 *  http://www.OARcorp.com/rtems/license.html.
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 *
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 *  $Id: ioman.c,v 1.2 2001-09-27 12:01:15 chris Exp $
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 */
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <assert.h>
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#include <rtems.h>
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#include "libio_.h"
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#include "imfs.h"
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#if defined(__linux__)
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#define S_IFCHR __S_IFCHR
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#endif
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/*
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 *  rtems_io_register_name
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 *
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 *  This assumes that all registered devices are character devices.
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 */
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rtems_status_code rtems_io_register_name(
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  char *device_name,
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  rtems_device_major_number major,
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  rtems_device_minor_number minor
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)
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{
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#if !defined(RTEMS_UNIX)
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  int    status;
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  dev_t  dev;
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  dev = rtems_filesystem_make_dev_t( major, minor );
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  status = mknod( device_name, 0777 | S_IFCHR, dev );
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  /* this is the only error returned by the old version */
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  if ( status )
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    return RTEMS_TOO_MANY;
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#endif
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  return RTEMS_SUCCESSFUL;
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}
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/*
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 *  rtems_io_lookup_name
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 *
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 *  This version is not reentrant.
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 *
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 *  XXX - This is dependent upon IMFS and should not be.
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 *        Suggest adding a filesystem routine to fill in the device_info.
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 */
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rtems_status_code rtems_io_lookup_name(
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  const char           *name,
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  rtems_driver_name_t **device_info
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)
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{
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#if !defined(RTEMS_UNIX)
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  IMFS_jnode_t                      *the_jnode;
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  rtems_filesystem_location_info_t   loc;
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  static rtems_driver_name_t         device;
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  int                                result;
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  rtems_filesystem_node_types_t      node_type;
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  result = rtems_filesystem_evaluate_path( name, 0x00, &loc, TRUE );
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  the_jnode = loc.node_access;
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  node_type = (*loc.ops->node_type)( &loc );
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  if ( (result != 0) || node_type != RTEMS_FILESYSTEM_DEVICE ) {
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    *device_info = 0;
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    rtems_filesystem_freenode( &loc );
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    return RTEMS_UNSATISFIED;
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  }
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  device.device_name        = (char *) name;
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  device.device_name_length = strlen( name );
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  device.major              = the_jnode->info.device.major;
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  device.minor              = the_jnode->info.device.minor;
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  *device_info              = &device;
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  rtems_filesystem_freenode( &loc );
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#endif
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  return RTEMS_SUCCESSFUL;
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}

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