Changeset 00aece0 in mainline for uspace/lib/block/libblock.c

Timestamp:

2012-02-18T16:47:38Z (14 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

4449c6c

Parents:

bd5f3b7 (diff), f943dd3 (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge mainline changes.

File:

• uspace/lib/block/libblock.c (modified) (1 diff)

uspace/lib/block/libblock.c

@@ -891 +891 @@
 }
 
+/** Get TOC from device.
+ *
+ * @param service_id Service ID of the block device.
+ * @param session    Starting session.
+ *
+ * @return Allocated TOC structure.
+ * @return NULL on failure.
+ *
+ */
+toc_block_t *block_get_toc(service_id_t service_id, uint8_t session)
+{
+        devcon_t *devcon = devcon_search(service_id);
+        assert(devcon);
+        
+        toc_block_t *toc = NULL;
+        
+        fibril_mutex_lock(&devcon->comm_area_lock);
+        
+        async_exch_t *exch = async_exchange_begin(devcon->sess);
+        int rc = async_req_1_0(exch, BD_READ_TOC, session);
+        async_exchange_end(exch);
+        
+        if (rc == EOK) {
+                toc = (toc_block_t *) malloc(sizeof(toc_block_t));
+                if (toc != NULL) {
+                        memset(toc, 0, sizeof(toc_block_t));
+                        memcpy(toc, devcon->comm_area,
+                            min(devcon->pblock_size, sizeof(toc_block_t)));
+                }
+        }
+        
+        
+        fibril_mutex_unlock(&devcon->comm_area_lock);
+        
+        return toc;
+}
+
 /** Read blocks from block device.
  *