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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [lib/] [libc/] [ioman.c] - Rev 385
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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) 1989-1999. * 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: ioman.c,v 1.2 2001-09-27 12:01:15 chris Exp $ */ #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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