du: handle --files0-from=- with piped in -

src/uu/du/locales/en-US.ftl

@@ -69,6 +69,7 @@ du-error-printing-thread-panicked = Printing thread panicked.
 du-error-invalid-suffix = invalid suffix in --{ $option } argument { $value }
 du-error-invalid-argument = invalid --{ $option } argument { $value }
 du-error-argument-too-large = --{ $option } argument { $value } too large
+du-error-hyphen-file-name-not-allowed = when reading file names from standard input, no file name of '-' allowed
 
 # Verbose/status messages
 du-verbose-ignored = { $path } ignored

src/uu/du/locales/fr-FR.ftl

@@ -69,6 +69,7 @@ du-error-printing-thread-panicked = Le thread d'affichage a paniqué.
 du-error-invalid-suffix = suffixe invalide dans l'argument --{ $option } { $value }
 du-error-invalid-argument = argument --{ $option } invalide { $value }
 du-error-argument-too-large = argument --{ $option } { $value } trop grand
+du-error-hyphen-file-name-not-allowed = le nom de fichier '-' n'est pas autorisé lors de la lecture de l'entrée standard
 
 # Messages verbeux/de statut
 du-verbose-ignored = { $path } ignoré

src/uu/du/src/du.rs

@@ -2,16 +2,15 @@
 //
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.
+//
 // spell-checker:ignore fstatat openat dirfd
 
 use clap::{Arg, ArgAction, ArgMatches, Command, builder::PossibleValue};
 use glob::Pattern;
 use std::collections::HashSet;
 use std::env;
-use std::ffi::OsStr;
-use std::ffi::OsString;
-use std::fs::Metadata;
-use std::fs::{self, DirEntry, File};
+use std::ffi::{OsStr, OsString};
+use std::fs::{self, DirEntry, File, Metadata};
 use std::io::{BufRead, BufReader, stdout};
 #[cfg(not(windows))]
 use std::os::unix::fs::MetadataExt;
@@ -942,6 +941,9 @@ fn read_files_from(file_name: &OsStr) -> Result<Vec<PathBuf>, std::io::Error> {
                 translate!("du-error-invalid-zero-length-file-name", "file" => file_name.to_string_lossy(), "line" => line_number)
             );
             set_exit_code(1);
+        } else if path == b"-" && file_name == "-" {
+            show_error!("{}", translate!("du-error-hyphen-file-name-not-allowed"));
+            set_exit_code(1);
         } else {
             let p = PathBuf::from(&*uucore::os_str_from_bytes(&path).unwrap());
             if !paths.contains(&p) {

tests/by-util/test_du.rs

@@ -5,17 +5,16 @@
 
 // spell-checker:ignore (paths) atim sublink subwords azerty azeaze xcwww azeaz amaz azea qzerty tazerty tsublink testfile1 testfile2 filelist fpath testdir testfile
 // spell-checker:ignore selfref ELOOP smallfile
+
 #[cfg(not(windows))]
 use regex::Regex;
 
-use uutests::at_and_ucmd;
-use uutests::new_ucmd;
 #[cfg(not(target_os = "windows"))]
 use uutests::unwrap_or_return;
 use uutests::util::TestScenario;
 #[cfg(not(target_os = "windows"))]
 use uutests::util::expected_result;
-use uutests::util_name;
+use uutests::{at_and_ucmd, new_ucmd, util_name};
 
 #[cfg(not(target_os = "openbsd"))]
 const SUB_DIR: &str = "subdir/deeper";
@@ -1392,6 +1391,17 @@ fn test_du_files0_from_stdin_with_invalid_zero_length_file_names() {
         .stderr_contains("-:2: invalid zero-length file name");
 }
 
+#[test]
+fn test_du_files0_from_stdin_with_stdin_as_input() {
+    new_ucmd!()
+        .arg("--files0-from=-")
+        .pipe_in("-")
+        .fails_with_code(1)
+        .stderr_is(
+            "du: when reading file names from standard input, no file name of '-' allowed\n",
+        );
+}
+
 #[test]
 fn test_du_files0_from_dir() {
     let ts = TestScenario::new(util_name!());

util/build-gnu.sh

@@ -326,7 +326,6 @@ sed -i -e "s/du: invalid -t argument/du: invalid --threshold argument/" -e "s/du
 
 # Remove the extra output check
 sed -i -e "s|Try '\$prog --help' for more information.\\\n||" tests/du/files0-from.pl
-sed -i -e "s|when reading file names from stdin, no file name of\"|-: No such file or directory\n\"|" -e "s| '-' allowed\\\n||" tests/du/files0-from.pl
 sed -i -e "s|-: No such file or directory|cannot access '-': No such file or directory|g" tests/du/files0-from.pl
 
 # Skip the move-dir-while-traversing test - our implementation uses safe traversal with openat()