yaffsfs: Add yaffs_format function

[yaffs2.git] / yaffs_guts.c

diff --git a/yaffs_guts.c b/yaffs_guts.c
index f3bc41905ab50099af47123b4b3c40867f6669ec..b67055adef5de24874aaaa1b3121fcb252b84091 100644 (file)
--- a/yaffs_guts.c
+++ b/yaffs_guts.c
@@ -185,31 +185,6 @@ void yaffs_release_temp_buffer(struct yaffs_dev *dev, u8 *buffer)
 
 }
 
-/*
- * Determine if we have a managed buffer.
- */
-int yaffs_is_managed_tmp_buffer(struct yaffs_dev *dev, const u8 *buffer)
-{
-       int i;
-
-       for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
-               if (dev->temp_buffer[i].buffer == buffer)
-                       return 1;
-       }
-
-       for (i = 0; i < dev->param.n_caches; i++) {
-               if (dev->cache[i].data == buffer)
-                       return 1;
-       }
-
-       if (buffer == dev->checkpt_buffer)
-               return 1;
-
-       yaffs_trace(YAFFS_TRACE_ALWAYS,
-         "yaffs: unmaged buffer detected.");
-       return 0;
-}
-
 /*
  * Functions for robustisizing TODO
  *
@@ -219,18 +194,18 @@ static void yaffs_handle_chunk_wr_ok(struct yaffs_dev *dev, int nand_chunk,
                                     const u8 *data,
                                     const struct yaffs_ext_tags *tags)
 {
-       dev = dev;
-       nand_chunk = nand_chunk;
-       data = data;
-       tags = tags;
+       (void) dev;
+       (void) nand_chunk;
+       (void) data;
+       (void) tags;
 }
 
 static void yaffs_handle_chunk_update(struct yaffs_dev *dev, int nand_chunk,
                                      const struct yaffs_ext_tags *tags)
 {
-       dev = dev;
-       nand_chunk = nand_chunk;
-       tags = tags;
+       (void) dev;
+       (void) nand_chunk;
+       (void) tags;
 }
 
 void yaffs_handle_chunk_error(struct yaffs_dev *dev,
@@ -742,7 +717,7 @@ static void yaffs_deinit_tnodes_and_objs(struct yaffs_dev *dev)
        dev->n_tnodes = 0;
 }
 
-void yaffs_load_tnode_0(struct yaffs_dev *dev, struct yaffs_tnode *tn,
+static void yaffs_load_tnode_0(struct yaffs_dev *dev, struct yaffs_tnode *tn,
                        unsigned pos, unsigned val)
 {
        u32 *map = (u32 *) tn;
@@ -819,7 +794,7 @@ struct yaffs_tnode *yaffs_find_tnode_0(struct yaffs_dev *dev,
        int required_depth;
        int level = file_struct->top_level;
 
-       dev = dev;
+       (void) dev;
 
        /* Check sane level and chunk Id */
        if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL)
@@ -1929,7 +1904,7 @@ struct yaffs_obj *yaffs_find_by_number(struct yaffs_dev *dev, u32 number)
        return NULL;
 }
 
-struct yaffs_obj *yaffs_new_obj(struct yaffs_dev *dev, int number,
+static struct yaffs_obj *yaffs_new_obj(struct yaffs_dev *dev, int number,
                                enum yaffs_obj_type type)
 {
        struct yaffs_obj *the_obj = NULL;
@@ -3226,7 +3201,7 @@ static void yaffs_load_name_from_oh(struct yaffs_dev *dev, YCHAR *name,
                }
        } else {
 #else
-       dev = dev;
+       (void) dev;
        {
 #endif
                strncpy(name, oh_name, buff_size - 1);
@@ -3863,7 +3838,7 @@ static int yaffs_unlink_file_if_needed(struct yaffs_obj *in)
        return ret_val;
 }
 
-int yaffs_del_file(struct yaffs_obj *in)
+static int yaffs_del_file(struct yaffs_obj *in)
 {
        int ret_val = YAFFS_OK;
        int deleted;    /* Need to cache value on stack if in is freed */
@@ -5011,6 +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.