Aded ramdisk_register().

2 files changed, 66 insertions, 0 deletions

diff --git a/cpukit/libblock/include/rtems/ramdisk.h b/cpukit/libblock/include/rtems/ramdisk.h
index fc40816f54..68c5887abe 100644
--- a/cpukit/libblock/include/rtems/ramdisk.h
+++ b/cpukit/libblock/include/rtems/ramdisk.h
@@ -213,6 +213,25 @@ ramdisk *ramdisk_allocate(
 
 void ramdisk_free(ramdisk *rd);
 
+/**
+ * @brief Allocates, initializes and registers a RAM disk.
+ *
+ * The block size will be @a block_size.  The block count will be @a
+ * block_count.  The disk storage will be allocated.  Sets the trace enable to
+ * @a trace.  Registers a device node with disk name path @a disk.  The
+ * registered device number will be returned in @a dev.
+ *
+ * @retval RTEMS_SUCCESSFUL Successful operation.
+ * @retval RTEMS_UNSATISFIED Something is wrong.
+ */
+rtems_status_code ramdisk_register(
+  uint32_t block_size,
+  rtems_blkdev_bnum block_count,
+  bool trace,
+  const char *disk,
+  dev_t *dev
+);
+
 /** @} */
 
 /** @} */
diff --git a/cpukit/libblock/src/ramdisk-init.c b/cpukit/libblock/src/ramdisk-init.c
index 6ef89dc5a1..9c272b9ea1 100644
--- a/cpukit/libblock/src/ramdisk-init.c
+++ b/cpukit/libblock/src/ramdisk-init.c
@@ -73,3 +73,50 @@ void ramdisk_free(ramdisk *rd)
     free(rd);
   }
 }
+
+rtems_status_code ramdisk_register(
+  uint32_t block_size,
+  rtems_blkdev_bnum block_count,
+  bool trace,
+  const char *disk,
+  dev_t *dev_ptr
+)
+{
+  rtems_status_code sc = RTEMS_SUCCESSFUL;
+  rtems_device_major_number major = 0;
+  ramdisk *rd = NULL;
+  dev_t dev = 0;
+
+  sc = rtems_io_register_driver(0, &ramdisk_ops, &major);
+  if (sc != RTEMS_SUCCESSFUL) {
+    return RTEMS_UNSATISFIED;
+  }
+
+  rd = ramdisk_allocate(NULL, block_size, block_count, trace);
+  if (rd == NULL) {
+    rtems_io_unregister_driver(major);
+
+    return RTEMS_UNSATISFIED;
+  }
+
+  dev = rtems_filesystem_make_dev_t(major, 0);
+
+  sc = rtems_disk_create_phys(
+    dev,
+    block_size,
+    block_count,
+    ramdisk_ioctl,
+    rd,
+    disk
+  );
+  if (sc != RTEMS_SUCCESSFUL) {
+    ramdisk_free(rd);
+    rtems_io_unregister_driver(major);
+
+    return RTEMS_UNSATISFIED;
+  }
+
+  *dev_ptr = dev;
+
+  return RTEMS_SUCCESSFUL;
+}