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2001-04-20 Joel Sherrill <joel@OARcorp.com>

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* devnull/devnull.c (null_initialize): Added check to
	ensure that the driver is only initialized once.  Otherwise,
	it will abort when the device /dev/null is present.
	(null_write): Do not dereference a NULL pointer.
This commit is contained in:
Joel Sherrill
2001-04-20 13:37:05 +00:00
parent 5346276237
commit a5bdcd9881
4 changed files with 46 additions and 20 deletions
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7
c/src/libmisc/ChangeLog
View File

@@ -1,3 +1,10 @@
2001-04-20 Joel Sherrill <joel@OARcorp.com>
* devnull/devnull.c (null_initialize): Added check to
ensure that the driver is only initialized once. Otherwise,
it will abort when the device /dev/null is present.
(null_write): Do not dereference a NULL pointer.
2001-02-06 Ralf Corsepius <corsepiu@faw.uni-ulm.de>
* monitor/mon-command.c: Use #if defined(RTEMS_UNIX).

6
c/src/libmisc/devnull/devnull.c
View File

@@ -32,6 +32,7 @@
*/
rtems_unsigned32 NULL_major;
static initialized;
rtems_device_driver null_initialize(
rtems_device_major_number major,
@@ -41,6 +42,9 @@ rtems_device_driver null_initialize(
{
rtems_device_driver status;
if ( !initialized ) {
initialized = 1;
status = rtems_io_register_name(
"/dev/null",
major,
@@ -51,6 +55,7 @@ rtems_device_driver null_initialize(
rtems_fatal_error_occurred(status);
NULL_major = major;
}
return RTEMS_SUCCESSFUL;
}
@@ -145,6 +150,7 @@ rtems_device_driver null_write(
{
rtems_libio_rw_args_t *rw_args = (rtems_libio_rw_args_t *) pargp;
if ( rw_args )
rw_args->bytes_moved = rw_args->count;
return NULL_SUCCESSFUL;

7
cpukit/libmisc/ChangeLog
View File

@@ -1,3 +1,10 @@
2001-04-20 Joel Sherrill <joel@OARcorp.com>
* devnull/devnull.c (null_initialize): Added check to
ensure that the driver is only initialized once. Otherwise,
it will abort when the device /dev/null is present.
(null_write): Do not dereference a NULL pointer.
2001-02-06 Ralf Corsepius <corsepiu@faw.uni-ulm.de>
* monitor/mon-command.c: Use #if defined(RTEMS_UNIX).

6
cpukit/libmisc/devnull/devnull.c
View File

@@ -32,6 +32,7 @@
*/
rtems_unsigned32 NULL_major;
static initialized;
rtems_device_driver null_initialize(
rtems_device_major_number major,
@@ -41,6 +42,9 @@ rtems_device_driver null_initialize(
{
rtems_device_driver status;
if ( !initialized ) {
initialized = 1;
status = rtems_io_register_name(
"/dev/null",
major,
@@ -51,6 +55,7 @@ rtems_device_driver null_initialize(
rtems_fatal_error_occurred(status);
NULL_major = major;
}
return RTEMS_SUCCESSFUL;
}
@@ -145,6 +150,7 @@ rtems_device_driver null_write(
{
rtems_libio_rw_args_t *rw_args = (rtems_libio_rw_args_t *) pargp;
if ( rw_args )
rw_args->bytes_moved = rw_args->count;
return NULL_SUCCESSFUL;