yaffsfs: Add yaffs_format function

[yaffs2.git] / yaffs_guts.c

diff --git a/yaffs_guts.c b/yaffs_guts.c
index 1602c4bde572e538482953ee10bff65d1624b5d9..b67055adef5de24874aaaa1b3121fcb252b84091 100644 (file)
--- a/yaffs_guts.c
+++ b/yaffs_guts.c
@@ -4986,6 +4986,42 @@ int yaffs_get_n_free_chunks(struct yaffs_dev *dev)
        return n_free;
 }
 
+
+int yaffs_format_dev(struct yaffs_dev *dev)
+{
+       int i;
+       enum yaffs_block_state state;
+       u32 dummy;
+
+       if(dev->is_mounted)
+               return YAFFS_FAIL;
+
+       /*
+       * The runtime variables might not have been set up,
+       * so set up what we need.
+       */
+       dev->internal_start_block = dev->param.start_block;
+       dev->internal_end_block = dev->param.end_block;
+       dev->block_offset = 0;
+       dev->chunk_offset = 0;
+
+       if (dev->param.start_block == 0) {
+               dev->internal_start_block = dev->param.start_block + 1;
+               dev->internal_end_block = dev->param.end_block + 1;
+               dev->block_offset = 1;
+               dev->chunk_offset = dev->param.chunks_per_block;
+       }
+
+       for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) {
+               yaffs_query_init_block_state(dev, i, &state, &dummy);
+               if (state != YAFFS_BLOCK_STATE_DEAD)
+                       yaffs_erase_block(dev, i);
+       }
+
+       return YAFFS_OK;
+}
+
+
 /*
  * Marshalling functions to get loff_t file sizes into and out of
  * object headers.