[rtems commit] libblock: Add RTEMS_BLKIO_PURGEDEV

[Sebastian Huber]

Module:    rtems
Branch:    master
Commit:    84ab4fce2400709ebd1fac93a4b8e70e334f29a4
Changeset: http://git.rtems.org/rtems/commit/?id=84ab4fce2400709ebd1fac93a4b8e70e334f29a4

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Fri May 11 13:04:26 2012 +0200

libblock: Add RTEMS_BLKIO_PURGEDEV

---

 cpukit/libblock/include/rtems/blkdev.h |    6 ++++++
 cpukit/libblock/src/blkdev-ioctl.c     |    4 ++++
 2 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/cpukit/libblock/include/rtems/blkdev.h b/cpukit/libblock/include/rtems/blkdev.h
index c512380..85c22c1 100644
--- a/cpukit/libblock/include/rtems/blkdev.h
+++ b/cpukit/libblock/include/rtems/blkdev.h
@@ -162,6 +162,7 @@ typedef struct rtems_blkdev_request {
 #define RTEMS_BLKIO_DELETED         _IO('B', 7)
 #define RTEMS_BLKIO_CAPABILITIES    _IO('B', 8)
 #define RTEMS_BLKIO_GETDISKDEV      _IOR('B', 9, rtems_disk_device *)
+#define RTEMS_BLKIO_PURGEDEV        _IO('B', 10)
 
 /** @} */
 
@@ -204,6 +205,11 @@ static inline int rtems_disk_fd_sync(int fd)
   return ioctl(fd, RTEMS_BLKIO_SYNCDEV);
 }
 
+static inline int rtems_disk_fd_purge(int fd)
+{
+  return ioctl(fd, RTEMS_BLKIO_PURGEDEV);
+}
+
 /**
  * Only consecutive multi-sector buffer requests are supported.
  *
diff --git a/cpukit/libblock/src/blkdev-ioctl.c b/cpukit/libblock/src/blkdev-ioctl.c
index 52f19b5..d775d1e 100644
--- a/cpukit/libblock/src/blkdev-ioctl.c
+++ b/cpukit/libblock/src/blkdev-ioctl.c
@@ -60,6 +60,10 @@ rtems_blkdev_ioctl(rtems_disk_device *dd, uint32_t req, void *argp)
             *(rtems_disk_device **) argp = dd;
             break;
 
+        case RTEMS_BLKIO_PURGEDEV:
+            rtems_bdbuf_purge_dev(dd);
+            break;
+
         default:
             errno = EINVAL;
             rc = -1;