udf: Move udf_expand_dir_adinicb() to its callsite

There is just one caller of udf_expand_dir_adinicb(). Move the function
to its caller into namei.c as it is more about directory handling than
anything else anyway.

Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 82 insertions, 0 deletions

diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 7c95c549dd64..78bc4bbb7c54 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -326,6 +326,88 @@ static struct dentry *udf_lookup(struct inode *dir, struct dentry *dentry,
 	return d_splice_alias(inode, dentry);
 }
 
+static struct buffer_head *udf_expand_dir_adinicb(struct inode *inode,
+					udf_pblk_t *block, int *err)
+{
+	udf_pblk_t newblock;
+	struct buffer_head *dbh = NULL;
+	struct kernel_lb_addr eloc;
+	struct extent_position epos;
+	uint8_t alloctype;
+	struct udf_inode_info *iinfo = UDF_I(inode);
+	struct udf_fileident_iter iter;
+	uint8_t *impuse;
+	int ret;
+
+	if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))
+		alloctype = ICBTAG_FLAG_AD_SHORT;
+	else
+		alloctype = ICBTAG_FLAG_AD_LONG;
+
+	if (!inode->i_size) {
+		iinfo->i_alloc_type = alloctype;
+		mark_inode_dirty(inode);
+		return NULL;
+	}
+
+	/* alloc block, and copy data to it */
+	*block = udf_new_block(inode->i_sb, inode,
+			       iinfo->i_location.partitionReferenceNum,
+			       iinfo->i_location.logicalBlockNum, err);
+	if (!(*block))
+		return NULL;
+	newblock = udf_get_pblock(inode->i_sb, *block,
+				  iinfo->i_location.partitionReferenceNum,
+				0);
+	if (!newblock)
+		return NULL;
+	dbh = udf_tgetblk(inode->i_sb, newblock);
+	if (!dbh)
+		return NULL;
+	lock_buffer(dbh);
+	memcpy(dbh->b_data, iinfo->i_data, inode->i_size);
+	memset(dbh->b_data + inode->i_size, 0,
+	       inode->i_sb->s_blocksize - inode->i_size);
+	set_buffer_uptodate(dbh);
+	unlock_buffer(dbh);
+
+	/* Drop inline data, add block instead */
+	iinfo->i_alloc_type = alloctype;
+	memset(iinfo->i_data + iinfo->i_lenEAttr, 0, iinfo->i_lenAlloc);
+	iinfo->i_lenAlloc = 0;
+	eloc.logicalBlockNum = *block;
+	eloc.partitionReferenceNum =
+				iinfo->i_location.partitionReferenceNum;
+	iinfo->i_lenExtents = inode->i_size;
+	epos.bh = NULL;
+	epos.block = iinfo->i_location;
+	epos.offset = udf_file_entry_alloc_offset(inode);
+	udf_add_aext(inode, &epos, &eloc, inode->i_size, 0);
+	brelse(epos.bh);
+	mark_inode_dirty(inode);
+
+	/* Now fixup tags in moved directory entries */
+	for (ret = udf_fiiter_init(&iter, inode, 0);
+	     !ret && iter.pos < inode->i_size;
+	     ret = udf_fiiter_advance(&iter)) {
+		iter.fi.descTag.tagLocation = cpu_to_le32(*block);
+		if (iter.fi.lengthOfImpUse != cpu_to_le16(0))
+			impuse = dbh->b_data + iter.pos +
+						sizeof(struct fileIdentDesc);
+		else
+			impuse = NULL;
+		udf_fiiter_write_fi(&iter, impuse);
+	}
+	/*
+	 * We don't expect the iteration to fail as the directory has been
+	 * already verified to be correct
+	 */
+	WARN_ON_ONCE(ret);
+	udf_fiiter_release(&iter);
+
+	return dbh;
+}
+
 static struct fileIdentDesc *udf_add_entry(struct inode *dir,
 					   struct dentry *dentry,
 					   struct udf_fileident_bh *fibh,