diff options
-rw-r--r-- | cpukit/Makefile.am | 3 | ||||
-rw-r--r-- | cpukit/libmisc/Makefile.am | 3 | ||||
-rw-r--r-- | cpukit/libmisc/devnull/devzero.c | 88 | ||||
-rw-r--r-- | cpukit/libmisc/devnull/devzero.h | 78 | ||||
-rw-r--r-- | cpukit/preinstall.am | 4 |
5 files changed, 174 insertions, 2 deletions
diff --git a/cpukit/Makefile.am b/cpukit/Makefile.am index 0d5cce7df0..22298ebea0 100644 --- a/cpukit/Makefile.am +++ b/cpukit/Makefile.am @@ -140,7 +140,8 @@ include_rtems_HEADERS += libmisc/capture/capture.h \ include_rtems_HEADERS += libmisc/cpuuse/cpuuse.h ## devnull -include_rtems_HEADERS += libmisc/devnull/devnull.h +include_rtems_HEADERS += libmisc/devnull/devnull.h \ + libmisc/devnull/devzero.h ## dumpbuf include_rtems_HEADERS += libmisc/dumpbuf/dumpbuf.h diff --git a/cpukit/libmisc/Makefile.am b/cpukit/libmisc/Makefile.am index f288f14f2b..207ee8bbc2 100644 --- a/cpukit/libmisc/Makefile.am +++ b/cpukit/libmisc/Makefile.am @@ -30,7 +30,8 @@ libcpuuse_a_SOURCES = cpuuse/cpuusagereport.c cpuuse/cpuusagereset.c \ ## devnull noinst_LIBRARIES += libdevnull.a -libdevnull_a_SOURCES = devnull/devnull.c devnull/devnull.h +libdevnull_a_SOURCES = devnull/devnull.c devnull/devnull.h \ + devnull/devzero.c devnull/devzero.h ## dummy EXTRA_DIST += dummy/README diff --git a/cpukit/libmisc/devnull/devzero.c b/cpukit/libmisc/devnull/devzero.c new file mode 100644 index 0000000000..621d9a02fe --- /dev/null +++ b/cpukit/libmisc/devnull/devzero.c @@ -0,0 +1,88 @@ +/* + * Copyright (c) 2011 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Obere Lagerstr. 30 + * 82178 Puchheim + * Germany + * <rtems@embedded-brains.de> + * + * 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. + * + * $Id$ + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <rtems/devzero.h> + +#include <string.h> + +#include <rtems/libio.h> + +rtems_device_driver dev_zero_initialize( + rtems_device_major_number major, + rtems_device_minor_number minor __attribute__((unused)), + void *arg __attribute__((unused)) +) +{ + return rtems_io_register_name(DEVZERO_DEVICE_NAME, major, 0); +} + +rtems_device_driver dev_zero_open( + rtems_device_major_number major __attribute__((unused)), + rtems_device_minor_number minor __attribute__((unused)), + void *arg __attribute__((unused)) +) +{ + return RTEMS_SUCCESSFUL; +} + +rtems_device_driver dev_zero_close( + rtems_device_major_number major __attribute__((unused)), + rtems_device_minor_number minor __attribute__((unused)), + void *arg __attribute__((unused)) +) +{ + return RTEMS_SUCCESSFUL; +} + +rtems_device_driver dev_zero_read( + rtems_device_major_number major __attribute__((unused)), + rtems_device_minor_number minor __attribute__((unused)), + void *arg __attribute__((unused)) +) +{ + rtems_libio_rw_args_t *rw = arg; + + rw->bytes_moved = rw->count; + memset(rw->buffer, 0, rw->count); + + return RTEMS_SUCCESSFUL; +} + +rtems_device_driver dev_zero_write( + rtems_device_major_number major __attribute__((unused)), + rtems_device_minor_number minor __attribute__((unused)), + void *arg +) +{ + rtems_libio_rw_args_t *rw = arg; + + rw->bytes_moved = rw->count; + + return RTEMS_SUCCESSFUL; +} + +rtems_device_driver dev_zero_control( + rtems_device_major_number major __attribute__((unused)), + rtems_device_minor_number minor __attribute__((unused)), + void *arg __attribute__((unused)) +) +{ + return RTEMS_IO_ERROR; +} diff --git a/cpukit/libmisc/devnull/devzero.h b/cpukit/libmisc/devnull/devzero.h new file mode 100644 index 0000000000..7e5fb62a29 --- /dev/null +++ b/cpukit/libmisc/devnull/devzero.h @@ -0,0 +1,78 @@ +/* + * Copyright (c) 2011 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Obere Lagerstr. 30 + * 82178 Puchheim + * Germany + * <rtems@embedded-brains.de> + * + * 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. + * + * $Id$ + */ + +#ifndef _RTEMS_DEVZERO_H +#define _RTEMS_DEVZERO_H + +#include <rtems/io.h> + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +#define DEVZERO_DEVICE_NAME "/dev/zero" + +#define DEVZERO_DRIVER_TABLE_ENTRY \ + { \ + dev_zero_initialize, \ + dev_zero_open, \ + dev_zero_close, \ + dev_zero_read, \ + dev_zero_write, \ + dev_zero_control \ + } + +rtems_device_driver dev_zero_initialize( + rtems_device_major_number major, + rtems_device_minor_number minor, + void *arg +); + +rtems_device_driver dev_zero_open( + rtems_device_major_number major, + rtems_device_minor_number minor, + void *arg +); + +rtems_device_driver dev_zero_close( + rtems_device_major_number major, + rtems_device_minor_number minor, + void *arg +); + +rtems_device_driver dev_zero_read( + rtems_device_major_number major, + rtems_device_minor_number minor, + void *arg +); + +rtems_device_driver dev_zero_write( + rtems_device_major_number major, + rtems_device_minor_number minor, + void *arg +); + +rtems_device_driver dev_zero_control( + rtems_device_major_number major, + rtems_device_minor_number minor, + void *arg +); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* _RTEMS_DEVZERO_H */ diff --git a/cpukit/preinstall.am b/cpukit/preinstall.am index d773150301..8671a8c5e6 100644 --- a/cpukit/preinstall.am +++ b/cpukit/preinstall.am @@ -309,6 +309,10 @@ $(PROJECT_INCLUDE)/rtems/devnull.h: libmisc/devnull/devnull.h $(PROJECT_INCLUDE) $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/devnull.h PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/devnull.h +$(PROJECT_INCLUDE)/rtems/devzero.h: libmisc/devnull/devzero.h $(PROJECT_INCLUDE)/rtems/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/devzero.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/devzero.h + $(PROJECT_INCLUDE)/rtems/dumpbuf.h: libmisc/dumpbuf/dumpbuf.h $(PROJECT_INCLUDE)/rtems/$(dirstamp) $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/dumpbuf.h PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/dumpbuf.h |