openat variant

1 files changed, 24 insertions, 0 deletions

diff --git a/openat/tests/tmpfile.rs b/openat/tests/tmpfile.rs
new file mode 100644
index 0000000..4fa0f0d
--- /dev/null
+++ b/openat/tests/tmpfile.rs
@@ -0,0 +1,24 @@
+extern crate tempfile;
+extern crate openat;
+
+use std::io::{self, Read, Write};
+use std::os::unix::fs::PermissionsExt;
+use openat::Dir;
+
+#[test]
+#[cfg(target_os="linux")]
+fn unnamed_tmp_file_link() -> Result<(), io::Error> {
+    let tmp = tempfile::tempdir()?;
+    let dir = Dir::open(tmp.path())?;
+    let mut f = dir.new_unnamed_file(0o777)?;
+    f.write(b"hello\n")?;
+    // In glibc <= 2.22 permissions aren't set when using O_TMPFILE
+    // This includes ubuntu trusty on travis CI
+    f.set_permissions(PermissionsExt::from_mode(0o644))?;
+    dir.link_file_at(&f, "hello.txt")?;
+    let mut f = dir.open_file("hello.txt")?;
+    let mut buf = String::with_capacity(10);
+    f.read_to_string(&mut buf)?;
+    assert_eq!(buf, "hello\n");
+    Ok(())
+}