mkfifo: support symbolic mode

Author: yuankunzhang

src/uu/mkfifo/src/mkfifo.rs

@@ -25,20 +25,8 @@ mod options {
 pub fn uumain(args: impl uucore::Args) -> UResult<()> {
     let matches = uu_app().try_get_matches_from(args)?;
 
-    let mode = match matches.get_one::<String>(options::MODE) {
-        // if mode is passed, ignore umask
-        Some(m) => match usize::from_str_radix(m, 8) {
-            Ok(m) => m,
-            Err(e) => {
-                return Err(USimpleError::new(
-                    1,
-                    translate!("mkfifo-error-invalid-mode", "error" => e),
-                ));
-            }
-        },
-        // Default value + umask if present
-        None => 0o666 & !(uucore::mode::get_umask() as usize),
-    };
+    let mode = calculate_mode(matches.get_one::<String>(options::MODE))
+        .map_err(|e| USimpleError::new(1, translate!("mkfifo-error-invalid-mode", "error" => e)))?;
 
     let fifos: Vec<String> = match matches.get_many::<String>(options::FIFO) {
         Some(v) => v.cloned().collect(),
@@ -63,7 +51,7 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
         }
 
         // Explicitly set the permissions to ignore umask
-        if let Err(e) = fs::set_permissions(&f, fs::Permissions::from_mode(mode as u32)) {
+        if let Err(e) = fs::set_permissions(&f, fs::Permissions::from_mode(mode)) {
             return Err(USimpleError::new(
                 1,
                 translate!("mkfifo-error-cannot-set-permissions", "path" => f.quote(), "error" => e),
@@ -127,3 +115,22 @@ pub fn uu_app() -> Command {
                 .value_hint(clap::ValueHint::AnyPath),
         )
 }
+
+fn calculate_mode(mode_option: Option<&String>) -> Result<u32, String> {
+    let umask = uucore::mode::get_umask();
+    let mut mode = 0o666; // Default mode for FIFOs
+
+    if let Some(m) = mode_option {
+        if m.chars().any(|c| c.is_ascii_digit()) {
+            mode = uucore::mode::parse_numeric(mode, m, false)?;
+        } else {
+            for item in m.split(',') {
+                mode = uucore::mode::parse_symbolic(mode, item, umask, false)?;
+            }
+        }
+    } else {
+        mode &= !umask; // Apply umask if no mode is specified
+    }
+
+    Ok(mode)
+}

tests/by-util/test_mkfifo.rs

@@ -34,6 +34,13 @@ fn test_create_one_fifo_with_invalid_mode() {
         .arg("invalid")
         .fails()
         .stderr_contains("invalid mode");
+
+    new_ucmd!()
+        .arg("abcd")
+        .arg("-m")
+        .arg("0999")
+        .fails()
+        .stderr_contains("invalid mode");
 }
 
 #[test]
@@ -82,6 +89,16 @@ fn test_create_fifo_with_mode_and_umask() {
 
     test_fifo_creation("734", 0o077, "prwx-wxr--"); // spell-checker:disable-line
     test_fifo_creation("706", 0o777, "prwx---rw-"); // spell-checker:disable-line
+    test_fifo_creation("a=rwx", 0o022, "prwxrwxrwx"); // spell-checker:disable-line
+    test_fifo_creation("a=rx", 0o022, "pr-xr-xr-x"); // spell-checker:disable-line
+    test_fifo_creation("a=r", 0o022, "pr--r--r--"); // spell-checker:disable-line
+    test_fifo_creation("=rwx", 0o022, "prwxr-xr-x"); // spell-checker:disable-line
+    test_fifo_creation("u+w", 0o022, "prw-rw-rw-"); // spell-checker:disable-line
+    test_fifo_creation("u-w", 0o022, "pr--rw-rw-"); // spell-checker:disable-line
+    test_fifo_creation("u+x", 0o022, "prwxrw-rw-"); // spell-checker:disable-line
+    test_fifo_creation("u-r,g-w,o+x", 0o022, "p-w-r--rwx"); // spell-checker:disable-line
+    test_fifo_creation("a=rwx,o-w", 0o022, "prwxrwxr-x"); // spell-checker:disable-line
+    test_fifo_creation("=rwx,o-w", 0o022, "prwxr-xr-x"); // spell-checker:disable-line
 }
 
 #[test]