Changeset ae3d4f8 in mainline for uspace/lib/ext4/libext4_superblock.c

Timestamp:

2011-11-20T08:35:56Z (13 years ago)

Author:

Frantisek Princ <frantisek.princ@…>

Branches:

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

Children:

fe27eb4

Parents:

528e5b3

Message:

superblock update after block (de)allocation

File:

• uspace/lib/ext4/libext4_superblock.c (modified) (2 diffs)

uspace/lib/ext4/libext4_superblock.c

@@ -65 +65 @@
 }
 
+void ext4_superblock_set_free_blocks_count(ext4_superblock_t *sb, uint64_t count)
+{
+        sb->free_blocks_count_lo = host2uint32_t_le((count << 32) >> 32);
+        sb->free_blocks_count_hi = host2uint32_t_le(count >> 32);
+}
+
 uint32_t ext4_superblock_get_free_inodes_count(ext4_superblock_t *sb)
 {
@@ -268 +274 @@
         return EOK;
 }
+
+int ext4_superblock_write_direct(service_id_t service_id,
+                ext4_superblock_t *sb)
+{
+        int rc;
+        uint32_t phys_block_size;
+        uint64_t first_block;
+        uint32_t block_count;
+
+        rc = block_get_bsize(service_id, &phys_block_size);
+        if (rc != EOK) {
+                // TODO error
+                return rc;
+        }
+
+        first_block = EXT4_SUPERBLOCK_OFFSET / phys_block_size;
+        block_count = EXT4_SUPERBLOCK_SIZE / phys_block_size;
+
+        if (EXT4_SUPERBLOCK_SIZE % phys_block_size) {
+                block_count++;
+        }
+
+        return block_write_direct(service_id, first_block, block_count, sb);
+
+}
+
 
 int ext4_superblock_check_sanity(ext4_superblock_t *sb)