refactor: vfs_open: start opening iff there is a empty fd slot available.

[lunaix-os.git] / lunaix-os / kernel / block / blk_mapping.c

diff --git a/lunaix-os/kernel/block/blk_mapping.c b/lunaix-os/kernel/block/blk_mapping.c
index 46e8f458ac59dc0189d5b130b193b7745a843a65..7dae2b8c67f2548f4f1a21c41f0a3a721fa62d61 100644 (file)
--- a/lunaix-os/kernel/block/blk_mapping.c
+++ b/lunaix-os/kernel/block/blk_mapping.c
@@ -9,14 +9,6 @@ blk_mapping_init()
     blk_root = twifs_dir_node(NULL, "block");
 }
 
-void
-__blk_rd_size(struct twimap* map)
-{
-    struct block_dev* bdev = twimap_data(map, struct block_dev*);
-    size_t secsize = bdev->blk_size;
-    twimap_printf(map, "%u", bdev->end_lba * secsize);
-}
-
 void
 __blk_rd_lblksz(struct twimap* map)
 {
@@ -33,7 +25,29 @@ __blk_rd_name(struct twimap* map)
 }
 
 void
-blk_set_blkmapping(struct block_dev* bdev, void* fsnode)
+__blk_rd_start_lba(struct twimap* map)
+{
+    struct block_dev* bdev = twimap_data(map, struct block_dev*);
+    twimap_printf(map, "%d", bdev->start_lba);
+}
+
+void
+__blk_rd_end_lba(struct twimap* map)
+{
+    struct block_dev* bdev = twimap_data(map, struct block_dev*);
+    twimap_printf(map, "%d", bdev->end_lba);
+}
+
+void
+__blk_rd_size(struct twimap* map)
+{
+    struct block_dev* bdev = twimap_data(map, struct block_dev*);
+    twimap_printf(
+      map, "%u", (u32_t)(bdev->end_lba - bdev->start_lba) * bdev->blk_size);
+}
+
+void
+__map_internal(struct block_dev* bdev, void* fsnode)
 {
     struct twifs_node* dev_root = (struct twifs_node*)fsnode;
 
@@ -45,4 +59,25 @@ blk_set_blkmapping(struct block_dev* bdev, void* fsnode)
 
     map = twifs_mapping(dev_root, bdev, "name");
     map->read = __blk_rd_name;
+
+    map = twifs_mapping(dev_root, bdev, "begin");
+    map->read = __blk_rd_start_lba;
+
+    map = twifs_mapping(dev_root, bdev, "end");
+    map->read = __blk_rd_end_lba;
+}
+
+void
+blk_set_blkmapping(struct block_dev* bdev, void* fsnode)
+{
+    struct twifs_node* dev_root = (struct twifs_node*)fsnode;
+
+    __map_internal(bdev, dev_root);
+
+    struct block_dev *pos, *n;
+    llist_for_each(pos, n, &bdev->parts, parts)
+    {
+        struct twifs_node* part_node = twifs_dir_node(dev_root, pos->bdev_id);
+        __map_internal(pos, part_node);
+    }
 }
\ No newline at end of file