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Filesystem: Use transient event

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This commit is contained in:
Sebastian Huber
2012-10-30 17:20:16 +01:00
parent ee82825dec
commit 93b29f08f0
4 changed files with 11 additions and 22 deletions
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12
cpukit/libcsupport/include/rtems/libio.h
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@@ -1462,8 +1462,9 @@ struct rtems_filesystem_mount_table_entry_tt {
/** /**
* The task that initiated the unmount process. After unmount process * The task that initiated the unmount process. After unmount process
* completion this task will be notified via the * completion this task will be notified via the transient event.
* @ref RTEMS_FILESYSTEM_UNMOUNT_EVENT. *
* @see ClassicEventTransient.
*/ */
rtems_id unmount_task; rtems_id unmount_task;
}; };
@@ -1526,15 +1527,16 @@ int rtems_filesystem_unregister(
* unmounted file system the function returns with an error status and errno is * unmounted file system the function returns with an error status and errno is
* set to EBUSY. * set to EBUSY.
* *
* The unmount process completion notification uses the RTEMS classic API * The unmount process completion notification uses the transient event. It is
* event @ref RTEMS_FILESYSTEM_UNMOUNT_EVENT. It is a fatal error to terminate * a fatal error to terminate the calling thread while waiting for this event.
* the calling thread while waiting for this event.
* *
* A concurrent unmount request for the same file system instance has * A concurrent unmount request for the same file system instance has
* unpredictable effects. * unpredictable effects.
* *
* @retval 0 Successful operation. * @retval 0 Successful operation.
* @retval -1 An error occured. The @c errno indicates the error. * @retval -1 An error occured. The @c errno indicates the error.
*
* @see ClassicEventTransient.
*/ */
int unmount( int unmount(
const char *mount_path const char *mount_path

10
cpukit/libcsupport/include/rtems/libio_.h
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@@ -38,16 +38,6 @@ extern "C" {
#define RTEMS_LIBIO_SEM rtems_build_name('L', 'B', 'I', 'O') #define RTEMS_LIBIO_SEM rtems_build_name('L', 'B', 'I', 'O')
#define RTEMS_LIBIO_IOP_SEM(n) rtems_build_name('L', 'B', 'I', n) #define RTEMS_LIBIO_IOP_SEM(n) rtems_build_name('L', 'B', 'I', n)
/**
* @brief Event to signal an unmount process completion.
*
* This event should equal the RTEMS_BDBUF_TRANSFER_SYNC event to avoid too
* many events reserved for the file system.
*
* @see rtems_filesystem_do_unmount() and unmount().
*/
#define RTEMS_FILESYSTEM_UNMOUNT_EVENT RTEMS_EVENT_1
extern rtems_id rtems_libio_semaphore; extern rtems_id rtems_libio_semaphore;
/* /*

2
cpukit/libcsupport/src/sup_fs_location.c
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@@ -216,7 +216,7 @@ void rtems_filesystem_do_unmount(
if (mt_entry->unmount_task != 0) { if (mt_entry->unmount_task != 0) {
rtems_status_code sc = rtems_status_code sc =
rtems_event_send(mt_entry->unmount_task, RTEMS_FILESYSTEM_UNMOUNT_EVENT); rtems_event_transient_send(mt_entry->unmount_task);
if (sc != RTEMS_SUCCESSFUL) { if (sc != RTEMS_SUCCESSFUL) {
rtems_fatal_error_occurred(0xdeadbeef); rtems_fatal_error_occurred(0xdeadbeef);
} }

9
cpukit/libcsupport/src/unmount.c
View File

@@ -70,12 +70,9 @@ int unmount( const char *path )
rtems_filesystem_eval_path_cleanup( &ctx ); rtems_filesystem_eval_path_cleanup( &ctx );
if ( rv == 0 ) { if ( rv == 0 ) {
rtems_event_set out; rtems_status_code sc = rtems_event_transient_receive(
rtems_status_code sc = rtems_event_receive( RTEMS_WAIT,
RTEMS_FILESYSTEM_UNMOUNT_EVENT, RTEMS_NO_TIMEOUT
RTEMS_EVENT_ALL | RTEMS_WAIT,
RTEMS_NO_TIMEOUT,
&out
); );
if ( sc != RTEMS_SUCCESSFUL ) { if ( sc != RTEMS_SUCCESSFUL ) {