Function test_tmpfiles_d_translation

crates/tmpfiles/src/lib.rs:582–654

()

    #[test]
    fn test_tmpfiles_d_translation() -> anyhow::Result<()> {
        // Prepare a minimal rootfs as playground.
        let rootfs = &newroot()?;
        let userdb = &mock_userdb();

        let mut db = DirBuilder::new();
        db.recursive(true);
        db.mode(0o755);

        rootfs.write(
            Path::new(TMPFILESD).join("systemd.conf"),
            indoc::indoc! { r#"
            d /var/lib 0755 - - -
            d /var/lib/private 0700 root root -
            d /var/log/private 0700 root root -
        "#},
        )?;

        // Also test /etc/tmpfiles.d (user-provided configs)
        rootfs.create_dir_all(ETC_TMPFILESD)?;
        rootfs.write(
            Path::new(ETC_TMPFILESD).join("user.conf"),
            "d /var/lib/user 0755 root root - -\n",
        )?;

        // Add test content.
        rootfs.ensure_dir_with("var/lib/systemd", &db)?;
        rootfs.ensure_dir_with("var/lib/private", &db)?;
        rootfs.ensure_dir_with("var/lib/nfs", &db)?;
        rootfs.ensure_dir_with("var/lib/user", &db)?;
        let global_rwx = Permissions::from_mode(0o777);
        rootfs.ensure_dir_with("var/lib/test/nested", &db).unwrap();
        rootfs.set_permissions("var/lib/test", global_rwx.clone())?;
        rootfs.set_permissions("var/lib/test/nested", global_rwx)?;
        rootfs.symlink("../", "var/lib/test/nested/symlink")?;
        rootfs.symlink_contents("/var/lib/foo", "var/lib/test/absolute-symlink")?;

        var_to_tmpfiles(rootfs, userdb, userdb).unwrap();

        // This is the first run
        let mut tmp_gen = BootcTmpfilesGeneration(0);
        let autovar_path = &tmp_gen.path();
        assert!(rootfs.try_exists(autovar_path).unwrap());
        let entries: Vec<String> = rootfs
            .read_to_string(autovar_path)
            .unwrap()
            .lines()
            .map(|s| s.to_owned())
            .collect();
        let expected = &[
            "L /var/lib/test/absolute-symlink - - - - /var/lib/foo",
            "L /var/lib/test/nested/symlink - - - - ../",
            "d /var/lib/nfs 0755 testuser testgroup - -",
            "d /var/lib/systemd 0755 testuser testgroup - -",
            "d /var/lib/test 0777 testuser testgroup - -",
            "d /var/lib/test/nested 0777 testuser testgroup - -",
        ];
        similar_asserts::assert_eq!(entries, expected);