apply different reference sizes for f2fs (android) case

Author: cre4ture

tests/by-util/test_ls.rs

@@ -73,6 +73,21 @@ fn test_ls_ordering() {
         .stdout_matches(&Regex::new("some-dir1:\\ntotal 0").unwrap());
 }
 
+#[cfg(all(unix, feature = "df"))]
+fn get_filesystem_type(scene: &TestScenario, path: &Path) -> String {
+    let mut cmd = scene.ccmd("df");
+    cmd.args(&["-PT"]).arg(path);
+    let output = cmd.succeeds();
+    let stdout_str = String::from_utf8_lossy(output.stdout());
+    println!("output of stat call ({:?}):\n{}", cmd, stdout_str);
+    let regex_str = r#"Filesystem\s+Type\s+.+[\r\n]+([^\s]+)\s+(?<fstype>[^\s]+)\s+"#;
+    let regex = Regex::new(regex_str).unwrap();
+    let m = regex.captures(&stdout_str).unwrap();
+    let fstype = m["fstype"].to_owned();
+    println!("detected fstype: {}", fstype);
+    fstype
+}
+
 #[cfg(all(feature = "truncate", feature = "dd"))]
 #[test] // FIXME: fix this test for FreeBSD
 fn test_ls_allocation_size() {
@@ -81,7 +96,7 @@ fn test_ls_allocation_size() {
     at.mkdir("some-dir1");
     at.touch("some-dir1/empty-file");
 
-    #[cfg(unix)]
+    #[cfg(all(unix, feature = "df"))]
     {
         scene
             .ccmd("truncate")
@@ -115,13 +130,24 @@ fn test_ls_allocation_size() {
             .succeeds()
             .stdout_matches(&Regex::new("[^ ] 2 [^ ]").unwrap());
 
+        let fstype = get_filesystem_type(&scene, &scene.fixtures.subdir);
+        let (zero_file_size_4k, zero_file_size_1k, zero_file_size_8k, zero_file_size_4m) =
+            match fstype.as_str() {
+                // apparently f2fs (flash friendly fs) accepts small overhead for better performance
+                "f2fs" => (4100, 1025, 8200, "4.1M"),
+                _ => (4096, 1024, 8192, "4.0M"),
+            };
+
         #[cfg(not(target_os = "freebsd"))]
         scene
             .ucmd()
             .arg("-s1")
             .arg("some-dir1")
             .succeeds()
-            .stdout_is("total 4096\n   0 empty-file\n   0 file-with-holes\n4096 zero-file\n");
+            .stdout_is(format!(
+                "total {zero_file_size_4k}\n   0 empty-file\n   0 file-with-holes\n\
+                {zero_file_size_4k} zero-file\n"
+            ));
 
         scene
             .ucmd()
@@ -138,7 +164,7 @@ fn test_ls_allocation_size() {
             .arg("some-dir1")
             .succeeds()
             .stdout_contains("0 empty-file")
-            .stdout_contains("4096 zero-file");
+            .stdout_contains(format!("{zero_file_size_4k} zero-file"));
 
         // Test alignment of different block sized files
         let res = scene.ucmd().arg("-si1").arg("some-dir1").succeeds();
@@ -185,10 +211,10 @@ fn test_ls_allocation_size() {
             .arg("-s1")
             .arg("some-dir1")
             .succeeds()
-            .stdout_contains("total 1024")
+            .stdout_contains(format!("total {zero_file_size_1k}"))
             .stdout_contains("0 empty-file")
             .stdout_contains("0 file-with-holes")
-            .stdout_contains("1024 zero-file");
+            .stdout_contains(format!("{zero_file_size_1k} zero-file"));
 
         #[cfg(not(target_os = "freebsd"))]
         scene
@@ -210,10 +236,10 @@ fn test_ls_allocation_size() {
             .arg("-s1")
             .arg("some-dir1")
             .succeeds()
-            .stdout_contains("total 1024")
+            .stdout_contains(format!("total {zero_file_size_1k}"))
             .stdout_contains("0 empty-file")
             .stdout_contains("0 file-with-holes")
-            .stdout_contains("1024 zero-file");
+            .stdout_contains(format!("{zero_file_size_1k} zero-file"));
 
         #[cfg(not(target_os = "freebsd"))]
         scene
@@ -222,10 +248,10 @@ fn test_ls_allocation_size() {
             .arg("-s1")
             .arg("some-dir1")
             .succeeds()
-            .stdout_contains("total 8192")
+            .stdout_contains(format!("total {zero_file_size_8k}"))
             .stdout_contains("0 empty-file")
             .stdout_contains("0 file-with-holes")
-            .stdout_contains("8192 zero-file");
+            .stdout_contains(format!("{zero_file_size_8k} zero-file"));
 
         // -k should make 'ls' ignore the env var
         #[cfg(not(target_os = "freebsd"))]
@@ -235,10 +261,10 @@ fn test_ls_allocation_size() {
             .arg("-s1k")
             .arg("some-dir1")
             .succeeds()
-            .stdout_contains("total 4096")
+            .stdout_contains(format!("total {zero_file_size_4k}"))
             .stdout_contains("0 empty-file")
             .stdout_contains("0 file-with-holes")
-            .stdout_contains("4096 zero-file");
+            .stdout_contains(format!("{zero_file_size_4k} zero-file"));
 
         // but manually specified blocksize overrides -k
         #[cfg(not(target_os = "freebsd"))]
@@ -248,10 +274,10 @@ fn test_ls_allocation_size() {
             .arg("--block-size=4K")
             .arg("some-dir1")
             .succeeds()
-            .stdout_contains("total 1024")
+            .stdout_contains(format!("total {zero_file_size_1k}"))
             .stdout_contains("0 empty-file")
             .stdout_contains("0 file-with-holes")
-            .stdout_contains("1024 zero-file");
+            .stdout_contains(format!("{zero_file_size_1k} zero-file"));
 
         #[cfg(not(target_os = "freebsd"))]
         scene
@@ -260,10 +286,10 @@ fn test_ls_allocation_size() {
             .arg("--block-size=4K")
             .arg("some-dir1")
             .succeeds()
-            .stdout_contains("total 1024")
+            .stdout_contains(format!("total {zero_file_size_1k}"))
             .stdout_contains("0 empty-file")
             .stdout_contains("0 file-with-holes")
-            .stdout_contains("1024 zero-file");
+            .stdout_contains(format!("{zero_file_size_1k} zero-file"));
 
         // si option should always trump the human-readable option
         #[cfg(not(target_os = "freebsd"))]
@@ -285,10 +311,10 @@ fn test_ls_allocation_size() {
             .arg("--block-size=human-readable")
             .arg("some-dir1")
             .succeeds()
-            .stdout_contains("total 4.0M")
+            .stdout_contains(format!("total {zero_file_size_4m}"))
             .stdout_contains("0 empty-file")
             .stdout_contains("0 file-with-holes")
-            .stdout_contains("4.0M zero-file");
+            .stdout_contains(format!("{zero_file_size_4m} zero-file"));
 
         #[cfg(not(target_os = "freebsd"))]
         scene