[PATCH v5 proxmox-backup 15/16] datastore: FixedIndexWriter: switch public chunk_size to u32

[Robert Obkircher <r.obkircher@proxmox.com>]

I'm not sure if this patch should be applied.

Signed-off-by: Robert Obkircher <r.obkircher@proxmox.com>
---
 pbs-datastore/src/datastore.rs   | 4 ++--
 pbs-datastore/src/fixed_index.rs | 6 +++---
 src/api2/backup/environment.rs   | 2 +-
 src/api2/backup/mod.rs           | 4 +---
 4 files changed, 7 insertions(+), 9 deletions(-)

diff --git a/pbs-datastore/src/datastore.rs b/pbs-datastore/src/datastore.rs
index 69bde917..98eab18d 100644
--- a/pbs-datastore/src/datastore.rs
+++ b/pbs-datastore/src/datastore.rs
@@ -696,10 +696,10 @@ impl DataStore {
         &self,
         filename: P,
         size: Option<u64>,
-        chunk_size: u64,
+        chunk_size: u32,
     ) -> Result<FixedIndexWriter, Error> {
         let full_path = self.inner.chunk_store.relative_path(filename.as_ref());
-        FixedIndexWriter::create(full_path, size, chunk_size)
+        FixedIndexWriter::create(full_path, size, chunk_size.into())
     }
 
     pub fn open_fixed_reader<P: AsRef<Path>>(
diff --git a/pbs-datastore/src/fixed_index.rs b/pbs-datastore/src/fixed_index.rs
index e8c14e5c..3fa146f8 100644
--- a/pbs-datastore/src/fixed_index.rs
+++ b/pbs-datastore/src/fixed_index.rs
@@ -531,12 +531,12 @@ impl FixedIndexWriter {
     /// If this writer has been created without a fixed size, the
     /// index capacity and content size are increased automatically
     /// until an incomplete chunk is encountered.
-    pub fn add_chunk(&mut self, start: u64, size: u64, digest: &[u8; 32]) -> Result<(), Error> {
-        let Some(end) = start.checked_add(size) else {
+    pub fn add_chunk(&mut self, start: u64, size: u32, digest: &[u8; 32]) -> Result<(), Error> {
+        let Some(end) = start.checked_add(size.into()) else {
             bail!("add_chunk: start and size are too large: {start}+{size}");
         };
         self.grow_to_size(end)?;
-        let idx = self.check_chunk_alignment(end, size)?;
+        let idx = self.check_chunk_alignment(end, size.into())?;
         self.add_digest(idx, digest)
     }
 
diff --git a/src/api2/backup/environment.rs b/src/api2/backup/environment.rs
index 9773a87a..9645f6de 100644
--- a/src/api2/backup/environment.rs
+++ b/src/api2/backup/environment.rs
@@ -442,7 +442,7 @@ impl BackupEnvironment {
             );
         }
 
-        data.index.add_chunk(offset, size.into(), digest)?;
+        data.index.add_chunk(offset, size, digest)?;
 
         data.chunk_count += 1;
 
diff --git a/src/api2/backup/mod.rs b/src/api2/backup/mod.rs
index 55207e6c..4d0846ca 100644
--- a/src/api2/backup/mod.rs
+++ b/src/api2/backup/mod.rs
@@ -528,9 +528,7 @@ fn create_fixed_index(
         reader = Some(index);
     }
 
-    let mut writer = env
-        .datastore
-        .create_fixed_writer(&path, size, chunk_size.into())?;
+    let mut writer = env.datastore.create_fixed_writer(&path, size, chunk_size)?;
 
     if let Some(reader) = reader {
         writer.clone_data_from(&reader)?;
-- 
2.47.3