Introudce new function, setup_temp_fs_tree(), to setup temporary fs tree
for make_btrfs_v2().
Signed-off-by: Qu Wenruo <quwenruo@xxxxxxxxxxxxxx>
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
---
utils.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/utils.c b/utils.c
index 4d29b1e..54085b0 100644
--- a/utils.c
+++ b/utils.c
@@ -654,6 +654,28 @@ out:
return ret;
}
+static int setup_temp_fs_tree(int fd, struct btrfs_mkfs_config *cfg,
+ u64 fs_bytenr)
+{
+ struct extent_buffer *buf = NULL;
+ int ret;
+
+ buf = malloc(sizeof(*buf) + cfg->nodesize);
+ if (!buf)
+ return -ENOMEM;
+ ret = setup_temp_extent_buffer(buf, cfg, fs_bytenr,
+ BTRFS_FS_TREE_OBJECTID);
+ if (ret < 0)
+ goto out;
+ /*
+ * Temporary fs tree is completely empty.
+ */
+ ret = write_temp_extent_buffer(fd, buf, fs_bytenr);
+out:
+ free(buf);
+ return ret;
+}
+
/*
* Improved version of make_btrfs().
*
@@ -750,6 +772,10 @@ static int make_convert_btrfs(int fd, struct btrfs_mkfs_config *cfg,
goto out;
ret = setup_temp_dev_tree(fd, cfg, sys_chunk_start, meta_chunk_start,
dev_bytenr);
+ if (ret < 0)
+ goto out;
+ ret = setup_temp_fs_tree(fd, cfg, fs_bytenr);
+
out:
return ret;
}
--
2.7.0
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