cfallocate feature

Author: Shubham8287

crates/dst/Cargo.toml

@@ -4,6 +4,10 @@ version.workspace = true
 edition.workspace = true
 rust-version.workspace = true
 
+[features]
+default = ["fallocate"]
+fallocate = ["spacetimedb-commitlog/fallocate"]
+
 [dependencies]
 anyhow.workspace = true
 clap.workspace = true

crates/dst/src/sim/commitlog.rs

@@ -400,6 +400,10 @@ impl FileLike for Segment {
 
         Ok(())
     }
+
+    fn fallocate(&mut self, _size: u64) -> io::Result<()> {
+        Ok(())
+    }
 }
 
 pub struct ReadOnlySegment {