Changeset beb17734 in mainline

Timestamp:

2008-10-27T15:14:16Z (16 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

04619ba

Parents:

9f95a80

Message:

Implementation of fat_node_sync().

File:

• uspace/srv/fs/fat/fat_ops.c (modified) (1 diff)

uspace/srv/fs/fat/fat_ops.c

@@ -117 +117 @@
 static void fat_node_sync(fat_node_t *node)
 {
-        /* TODO */
+        block_t *bb, *b;
+        fat_dentry_t *d;
+        uint16_t bps;
+        unsigned dps;
+        
+        assert(node->dirty);
+
+        bb = block_get(node->idx->dev_handle, BS_BLOCK, BS_SIZE);
+        bps = uint16_t_le2host(FAT_BS(bb)->bps);
+        dps = bps / sizeof(fat_dentry_t);
+        
+        /* Read the block that contains the dentry of interest. */
+        b = _fat_block_get(bb->data, node->idx->dev_handle, node->idx->pfc,
+            (node->idx->pdi * sizeof(fat_dentry_t)) / bps);
+
+        d = ((fat_dentry_t *)b->data) + (node->idx->pdi % dps);
+
+        d->firstc = host2uint16_t_le(node->firstc);
+        if (node->type == FAT_FILE)
+                d->size = host2uint32_t_le(node->size);
+        /* TODO: update other fields? (e.g time fields, attr field) */
+        
+        b->dirty = true;                /* need to sync block */
+        block_put(b);
+        block_put(bb);
 }