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Diffstat (limited to 'cpukit/sapi/src/ioread.c')
-rw-r--r-- | cpukit/sapi/src/ioread.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/cpukit/sapi/src/ioread.c b/cpukit/sapi/src/ioread.c new file mode 100644 index 0000000000..3b090ef764 --- /dev/null +++ b/cpukit/sapi/src/ioread.c @@ -0,0 +1,48 @@ +/* + * Input/Output Manager - Device Read + * + * COPYRIGHT (c) 1989-2007. + * 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.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#if HAVE_CONFIG_H +#include "config.h" +#endif + +#include <rtems/system.h> +#include <rtems/io.h> + +/* + * rtems_io_read + * + * This routine is the read directive of the IO manager. + * + * Input Paramters: + * major - device driver number + * minor - device number + * argument - pointer to argument(s) + * + * Output Parameters: + * returns - return code + */ + +rtems_status_code rtems_io_read( + rtems_device_major_number major, + rtems_device_minor_number minor, + void *argument +) +{ + rtems_device_driver_entry callout; + + if ( major >= _IO_Number_of_drivers ) + return RTEMS_INVALID_NUMBER; + + callout = _IO_Driver_address_table[major].read_entry; + return callout ? callout(major, minor, argument) : RTEMS_SUCCESSFUL; +} |