Merge pull request #1 from lucab/ups/alpha-1

cargo: memfd release 0.0.1-alpha.1

Author: Luca Bruno

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "memfd"
-version = "0.0.1-dev"
+version = "0.0.1-alpha.2"
 authors = [ "Luca Bruno <lucab@debian.org>" ]
 license = "MIT/Apache-2.0"
 repository = "https://github.com/lucab/memfd-rs"

tests/sealing.rs

@@ -52,3 +52,20 @@ fn test_sealing_add() {
     // memfd is "seal" sealed, adding further sealing should fail.
     m0.add_seals(&shrink_seal).unwrap_err();
 }
+
+#[test]
+fn test_sealing_resize() {
+    let opts = memfd::MemfdOptions::default().allow_sealing(true);
+    let mfd = opts.create("sized-1K").unwrap();
+    mfd.as_file().set_len(1024).unwrap();
+
+    mfd.add_seal(memfd::FileSeal::SealGrow).unwrap();
+    mfd.as_file().set_len(2048).unwrap_err();
+    mfd.as_file().set_len(512).unwrap();
+
+    mfd.add_seal(memfd::FileSeal::SealShrink).unwrap();
+    mfd.as_file().set_len(1000).unwrap_err();
+    mfd.as_file().set_len(1024).unwrap_err();
+    mfd.as_file().set_len(256).unwrap_err();
+    mfd.as_file().set_len(512).unwrap();
+}