libblock: Add generic IMFS block device nodes

New functions
 o rtems_blkdev_create(), and
 o rtems_blkdev_create_partition().

New test libtests/block11.

1 files changed, 50 insertions, 0 deletions

diff --git a/cpukit/libblock/include/rtems/blkdev.h b/cpukit/libblock/include/rtems/blkdev.h
index 70259d6c43..c51238084b 100644
--- a/cpukit/libblock/include/rtems/blkdev.h
+++ b/cpukit/libblock/include/rtems/blkdev.h
@@ -307,6 +307,56 @@ rtems_blkdev_ioctl(rtems_disk_device *dd, uint32_t req, void *argp);
  */
 extern const rtems_driver_address_table rtems_blkdev_generic_ops;
 
+/**
+ * @brief Creates a block device.
+ *
+ * @param[in] device The path for the new block device.
+ * @param[in] block_size The block size.  Must be positive.
+ * @param[in] block_count The block count.  Must be positive.
+ * @param[in] handler The block device IO control handler.  Must not be @c NULL.
+ * @param[in] driver_data The block device driver data.
+ *
+ * @retval RTEMS_SUCCESSFUL Successful operation.
+ * @retval RTEMS_INVALID_NUMBER Block size or block count is not positive.
+ * @retval RTEMS_NO_MEMORY Not enough memory.
+ * @retval RTEMS_UNSATISFIED Cannot create generic device node.
+ */
+rtems_status_code rtems_blkdev_create(
+  const char *device,
+  uint32_t block_size,
+  rtems_blkdev_bnum block_count,
+  rtems_block_device_ioctl handler,
+  void *driver_data
+);
+
+/**
+ * @brief Creates a partition within a block device.
+ *
+ * A partition manages a subset of consecutive blocks contained in a block
+ * device.  The blocks must be within the range of blocks managed by the
+ * associated block device.  The media block size, block size, and IO control
+ * handler are inherited by the block device.
+ *
+ * @param[in] partition The path for the new partition device.
+ * @param[in] device The block device path.
+ * @param[in] block_begin The block begin of the partition.
+ * @param[in] block_count The block count of the partition.
+ *
+ * @retval RTEMS_SUCCESSFUL Successful operation.
+ * @retval RTEMS_INVALID_ID Block device node does not exist.
+ * @retval RTEMS_INVALID_NODE File system node is not a block device.
+ * @retval RTEMS_NOT_IMPLEMENTED Block device implementation is incomplete.
+ * @retval RTEMS_INVALID_NUMBER Block begin or block count is invalid.
+ * @retval RTEMS_NO_MEMORY Not enough memory.
+ * @retval RTEMS_UNSATISFIED Cannot create generic device node.
+ */
+rtems_status_code rtems_blkdev_create_partition(
+  const char *partition,
+  const char *device,
+  rtems_blkdev_bnum block_begin,
+  rtems_blkdev_bnum block_count
+);
+
 /** @} */
 
 #ifdef __cplusplus