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qcow: bugfix: do not write v3 items to qcow header

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Fixes: 3f02ccaa8

Signed-off-by: Yu Li <liyu.yukiteru@bytedance.com>
This commit is contained in:
Yu Li 2023-07-05 14:09:46 +08:00 committed by Rob Bradford
parent 741d640330
commit ffe78c98fd
1 changed files with 8 additions and 5 deletions
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13
block/src/qcow/mod.rs
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@ -324,11 +324,14 @@ impl QcowHeader {
write_u32_to_file(file, self.refcount_table_clusters)?;
write_u32_to_file(file, self.nb_snapshots)?;
write_u64_to_file(file, self.snapshots_offset)?;
write_u64_to_file(file, self.incompatible_features)?;
write_u64_to_file(file, self.compatible_features)?;
write_u64_to_file(file, self.autoclear_features)?;
write_u32_to_file(file, self.refcount_order)?;
write_u32_to_file(file, self.header_size)?;
if self.version == 3 {
write_u64_to_file(file, self.incompatible_features)?;
write_u64_to_file(file, self.compatible_features)?;
write_u64_to_file(file, self.autoclear_features)?;
write_u32_to_file(file, self.refcount_order)?;
write_u32_to_file(file, self.header_size)?;
}
// Set the file length by seeking and writing a zero to the last byte. This avoids needing
// a `File` instead of anything that implements seek as the `file` argument.