Changeset 5b16912 in mainline for uspace/lib/ext4/libext4_filesystem.c

Timestamp:

2012-04-07T13:22:50Z (12 years ago)

Author:

Frantisek Princ <frantisek.princ@…>

Branches:

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

Children:

ce6de59

Parents:

c6a44a3

Message:

Moved append block function because of more common usage in the next commits

File:

• uspace/lib/ext4/libext4_filesystem.c (modified) (1 diff)

uspace/lib/ext4/libext4_filesystem.c

@@ -887 +887 @@
 }
 
+int ext4_filesystem_append_inode_block(ext4_inode_ref_t *inode_ref,
+                uint32_t *fblock, uint32_t *iblock)
+{
+
+        // TODO append to extent
+
+        int rc;
+
+        ext4_superblock_t *sb = inode_ref->fs->superblock;
+
+        // Compute next block index and allocate data block
+        uint64_t inode_size = ext4_inode_get_size(sb, inode_ref->inode);
+        uint32_t block_size = ext4_superblock_get_block_size(sb);
+
+        assert(inode_size % block_size == 0);
+
+        // Logical blocks are numbered from 0
+        uint32_t new_block_idx = inode_size / block_size;
+
+        uint32_t phys_block;
+        rc =  ext4_balloc_alloc_block(inode_ref, &phys_block);
+        if (rc != EOK) {
+                return rc;
+        }
+
+        rc = ext4_filesystem_set_inode_data_block_index(inode_ref, new_block_idx, phys_block);
+        if (rc != EOK) {
+                ext4_balloc_free_block(inode_ref, phys_block);
+                return rc;
+        }
+
+        ext4_inode_set_size(inode_ref->inode, inode_size + block_size);
+
+        inode_ref->dirty = true;
+
+        *fblock = phys_block;
+        *iblock = new_block_idx;
+        return EOK;
+}
+
 int ext4_filesystem_add_orphan(ext4_inode_ref_t *inode_ref)
 {