Merging upstream version 1.74.1+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

3 files changed, 2012 insertions, 0 deletions

diff --git a/vendor/tar-0.4.38/tests/all.rs b/vendor/tar-0.4.38/tests/all.rs
new file mode 100644
index 000000000..11103bd6b
--- /dev/null
+++ b/vendor/tar-0.4.38/tests/all.rs
@@ -0,0 +1,1387 @@
+extern crate filetime;
+extern crate tar;
+extern crate tempfile;
+#[cfg(all(unix, feature = "xattr"))]
+extern crate xattr;
+
+use std::fs::{self, File};
+use std::io::prelude::*;
+use std::io::{self, Cursor};
+use std::iter::repeat;
+use std::path::{Path, PathBuf};
+
+use filetime::FileTime;
+use tar::{Archive, Builder, Entries, EntryType, Header, HeaderMode};
+use tempfile::{Builder as TempBuilder, TempDir};
+
+macro_rules! t {
+    ($e:expr) => {
+        match $e {
+            Ok(v) => v,
+            Err(e) => panic!("{} returned {}", stringify!($e), e),
+        }
+    };
+}
+
+macro_rules! tar {
+    ($e:expr) => {
+        &include_bytes!(concat!("archives/", $e))[..]
+    };
+}
+
+mod header;
+
+/// test that we can concatenate the simple.tar archive and extract the same entries twice when we
+/// use the ignore_zeros option.
+#[test]
+fn simple_concat() {
+    let bytes = tar!("simple.tar");
+    let mut archive_bytes = Vec::new();
+    archive_bytes.extend(bytes);
+
+    let original_names: Vec<String> = decode_names(&mut Archive::new(Cursor::new(&archive_bytes)));
+    let expected: Vec<&str> = original_names.iter().map(|n| n.as_str()).collect();
+
+    // concat two archives (with null in-between);
+    archive_bytes.extend(bytes);
+
+    // test now that when we read the archive, it stops processing at the first zero header.
+    let actual = decode_names(&mut Archive::new(Cursor::new(&archive_bytes)));
+    assert_eq!(expected, actual);
+
+    // extend expected by itself.
+    let expected: Vec<&str> = {
+        let mut o = Vec::new();
+        o.extend(&expected);
+        o.extend(&expected);
+        o
+    };
+
+    let mut ar = Archive::new(Cursor::new(&archive_bytes));
+    ar.set_ignore_zeros(true);
+
+    let actual = decode_names(&mut ar);
+    assert_eq!(expected, actual);
+
+    fn decode_names<R>(ar: &mut Archive<R>) -> Vec<String>
+    where
+        R: Read,
+    {
+        let mut names = Vec::new();
+
+        for entry in t!(ar.entries()) {
+            let e = t!(entry);
+            names.push(t!(::std::str::from_utf8(&e.path_bytes())).to_string());
+        }
+
+        names
+    }
+}
+
+#[test]
+fn header_impls() {
+    let mut ar = Archive::new(Cursor::new(tar!("simple.tar")));
+    let hn = Header::new_old();
+    let hnb = hn.as_bytes();
+    for file in t!(ar.entries()) {
+        let file = t!(file);
+        let h1 = file.header();
+        let h1b = h1.as_bytes();
+        let h2 = h1.clone();
+        let h2b = h2.as_bytes();
+        assert!(h1b[..] == h2b[..] && h2b[..] != hnb[..])
+    }
+}
+
+#[test]
+fn header_impls_missing_last_header() {
+    let mut ar = Archive::new(Cursor::new(tar!("simple_missing_last_header.tar")));
+    let hn = Header::new_old();
+    let hnb = hn.as_bytes();
+    for file in t!(ar.entries()) {
+        let file = t!(file);
+        let h1 = file.header();
+        let h1b = h1.as_bytes();
+        let h2 = h1.clone();
+        let h2b = h2.as_bytes();
+        assert!(h1b[..] == h2b[..] && h2b[..] != hnb[..])
+    }
+}
+
+#[test]
+fn reading_files() {
+    let rdr = Cursor::new(tar!("reading_files.tar"));
+    let mut ar = Archive::new(rdr);
+    let mut entries = t!(ar.entries());
+
+    let mut a = t!(entries.next().unwrap());
+    assert_eq!(&*a.header().path_bytes(), b"a");
+    let mut s = String::new();
+    t!(a.read_to_string(&mut s));
+    assert_eq!(s, "a\na\na\na\na\na\na\na\na\na\na\n");
+
+    let mut b = t!(entries.next().unwrap());
+    assert_eq!(&*b.header().path_bytes(), b"b");
+    s.truncate(0);
+    t!(b.read_to_string(&mut s));
+    assert_eq!(s, "b\nb\nb\nb\nb\nb\nb\nb\nb\nb\nb\n");
+
+    assert!(entries.next().is_none());
+}
+
+#[test]
+fn writing_files() {
+    let mut ar = Builder::new(Vec::new());
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+
+    let path = td.path().join("test");
+    t!(t!(File::create(&path)).write_all(b"test"));
+
+    t!(ar.append_file("test2", &mut t!(File::open(&path))));
+
+    let data = t!(ar.into_inner());
+    let mut ar = Archive::new(Cursor::new(data));
+    let mut entries = t!(ar.entries());
+    let mut f = t!(entries.next().unwrap());
+
+    assert_eq!(&*f.header().path_bytes(), b"test2");
+    assert_eq!(f.header().size().unwrap(), 4);
+    let mut s = String::new();
+    t!(f.read_to_string(&mut s));
+    assert_eq!(s, "test");
+
+    assert!(entries.next().is_none());
+}
+
+#[test]
+fn large_filename() {
+    let mut ar = Builder::new(Vec::new());
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+
+    let path = td.path().join("test");
+    t!(t!(File::create(&path)).write_all(b"test"));
+
+    let filename = repeat("abcd/").take(50).collect::<String>();
+    let mut header = Header::new_ustar();
+    header.set_path(&filename).unwrap();
+    header.set_metadata(&t!(fs::metadata(&path)));
+    header.set_cksum();
+    t!(ar.append(&header, &b"test"[..]));
+    let too_long = repeat("abcd").take(200).collect::<String>();
+    t!(ar.append_file(&too_long, &mut t!(File::open(&path))));
+    t!(ar.append_data(&mut header, &too_long, &b"test"[..]));
+
+    let rd = Cursor::new(t!(ar.into_inner()));
+    let mut ar = Archive::new(rd);
+    let mut entries = t!(ar.entries());
+
+    // The short entry added with `append`
+    let mut f = entries.next().unwrap().unwrap();
+    assert_eq!(&*f.header().path_bytes(), filename.as_bytes());
+    assert_eq!(f.header().size().unwrap(), 4);
+    let mut s = String::new();
+    t!(f.read_to_string(&mut s));
+    assert_eq!(s, "test");
+
+    // The long entry added with `append_file`
+    let mut f = entries.next().unwrap().unwrap();
+    assert_eq!(&*f.path_bytes(), too_long.as_bytes());
+    assert_eq!(f.header().size().unwrap(), 4);
+    let mut s = String::new();
+    t!(f.read_to_string(&mut s));
+    assert_eq!(s, "test");
+
+    // The long entry added with `append_data`
+    let mut f = entries.next().unwrap().unwrap();
+    assert!(f.header().path_bytes().len() < too_long.len());
+    assert_eq!(&*f.path_bytes(), too_long.as_bytes());
+    assert_eq!(f.header().size().unwrap(), 4);
+    let mut s = String::new();
+    t!(f.read_to_string(&mut s));
+    assert_eq!(s, "test");
+
+    assert!(entries.next().is_none());
+}
+
+fn reading_entries_common<R: Read>(mut entries: Entries<R>) {
+    let mut a = t!(entries.next().unwrap());
+    assert_eq!(&*a.header().path_bytes(), b"a");
+    let mut s = String::new();
+    t!(a.read_to_string(&mut s));
+    assert_eq!(s, "a\na\na\na\na\na\na\na\na\na\na\n");
+    s.truncate(0);
+    t!(a.read_to_string(&mut s));
+    assert_eq!(s, "");
+
+    let mut b = t!(entries.next().unwrap());
+    assert_eq!(&*b.header().path_bytes(), b"b");
+    s.truncate(0);
+    t!(b.read_to_string(&mut s));
+    assert_eq!(s, "b\nb\nb\nb\nb\nb\nb\nb\nb\nb\nb\n");
+    assert!(entries.next().is_none());
+}
+
+#[test]
+fn reading_entries() {
+    let rdr = Cursor::new(tar!("reading_files.tar"));
+    let mut ar = Archive::new(rdr);
+    reading_entries_common(t!(ar.entries()));
+}
+
+#[test]
+fn reading_entries_with_seek() {
+    let rdr = Cursor::new(tar!("reading_files.tar"));
+    let mut ar = Archive::new(rdr);
+    reading_entries_common(t!(ar.entries_with_seek()));
+}
+
+struct LoggingReader<R> {
+    inner: R,
+    read_bytes: u64,
+}
+
+impl<R> LoggingReader<R> {
+    fn new(reader: R) -> LoggingReader<R> {
+        LoggingReader {
+            inner: reader,
+            read_bytes: 0,
+        }
+    }
+}
+
+impl<T: Read> Read for LoggingReader<T> {
+    fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
+        self.inner.read(buf).map(|i| {
+            self.read_bytes += i as u64;
+            i
+        })
+    }
+}
+
+impl<T: Seek> Seek for LoggingReader<T> {
+    fn seek(&mut self, pos: io::SeekFrom) -> io::Result<u64> {
+        self.inner.seek(pos)
+    }
+}
+
+#[test]
+fn skipping_entries_with_seek() {
+    let mut reader = LoggingReader::new(Cursor::new(tar!("reading_files.tar")));
+    let mut ar_reader = Archive::new(&mut reader);
+    let files: Vec<_> = t!(ar_reader.entries())
+        .map(|entry| entry.unwrap().path().unwrap().to_path_buf())
+        .collect();
+
+    let mut seekable_reader = LoggingReader::new(Cursor::new(tar!("reading_files.tar")));
+    let mut ar_seekable_reader = Archive::new(&mut seekable_reader);
+    let files_seekable: Vec<_> = t!(ar_seekable_reader.entries_with_seek())
+        .map(|entry| entry.unwrap().path().unwrap().to_path_buf())
+        .collect();
+
+    assert!(files == files_seekable);
+    assert!(seekable_reader.read_bytes < reader.read_bytes);
+}
+
+fn check_dirtree(td: &TempDir) {
+    let dir_a = td.path().join("a");
+    let dir_b = td.path().join("a/b");
+    let file_c = td.path().join("a/c");
+    assert!(fs::metadata(&dir_a).map(|m| m.is_dir()).unwrap_or(false));
+    assert!(fs::metadata(&dir_b).map(|m| m.is_dir()).unwrap_or(false));
+    assert!(fs::metadata(&file_c).map(|m| m.is_file()).unwrap_or(false));
+}
+
+#[test]
+fn extracting_directories() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+    let rdr = Cursor::new(tar!("directory.tar"));
+    let mut ar = Archive::new(rdr);
+    t!(ar.unpack(td.path()));
+    check_dirtree(&td);
+}
+
+#[test]
+fn extracting_duplicate_file_fail() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+    let path_present = td.path().join("a");
+    t!(File::create(path_present));
+
+    let rdr = Cursor::new(tar!("reading_files.tar"));
+    let mut ar = Archive::new(rdr);
+    ar.set_overwrite(false);
+    if let Err(err) = ar.unpack(td.path()) {
+        if err.kind() == std::io::ErrorKind::AlreadyExists {
+            // as expected with overwrite false
+            return;
+        }
+        panic!("unexpected error: {:?}", err);
+    }
+    panic!(
+        "unpack() should have returned an error of kind {:?}, returned Ok",
+        std::io::ErrorKind::AlreadyExists
+    )
+}
+
+#[test]
+fn extracting_duplicate_file_succeed() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+    let path_present = td.path().join("a");
+    t!(File::create(path_present));
+
+    let rdr = Cursor::new(tar!("reading_files.tar"));
+    let mut ar = Archive::new(rdr);
+    ar.set_overwrite(true);
+    t!(ar.unpack(td.path()));
+}
+
+#[test]
+#[cfg(unix)]
+fn extracting_duplicate_link_fail() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+    let path_present = td.path().join("lnk");
+    t!(std::os::unix::fs::symlink("file", path_present));
+
+    let rdr = Cursor::new(tar!("link.tar"));
+    let mut ar = Archive::new(rdr);
+    ar.set_overwrite(false);
+    if let Err(err) = ar.unpack(td.path()) {
+        if err.kind() == std::io::ErrorKind::AlreadyExists {
+            // as expected with overwrite false
+            return;
+        }
+        panic!("unexpected error: {:?}", err);
+    }
+    panic!(
+        "unpack() should have returned an error of kind {:?}, returned Ok",
+        std::io::ErrorKind::AlreadyExists
+    )
+}
+
+#[test]
+#[cfg(unix)]
+fn extracting_duplicate_link_succeed() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+    let path_present = td.path().join("lnk");
+    t!(std::os::unix::fs::symlink("file", path_present));
+
+    let rdr = Cursor::new(tar!("link.tar"));
+    let mut ar = Archive::new(rdr);
+    ar.set_overwrite(true);
+    t!(ar.unpack(td.path()));
+}
+
+#[test]
+#[cfg(all(unix, feature = "xattr"))]
+fn xattrs() {
+    // If /tmp is a tmpfs, xattr will fail
+    // The xattr crate's unit tests also use /var/tmp for this reason
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir_in("/var/tmp"));
+    let rdr = Cursor::new(tar!("xattrs.tar"));
+    let mut ar = Archive::new(rdr);
+    ar.set_unpack_xattrs(true);
+    t!(ar.unpack(td.path()));
+
+    let val = xattr::get(td.path().join("a/b"), "user.pax.flags").unwrap();
+    assert_eq!(val.unwrap(), "epm".as_bytes());
+}
+
+#[test]
+#[cfg(all(unix, feature = "xattr"))]
+fn no_xattrs() {
+    // If /tmp is a tmpfs, xattr will fail
+    // The xattr crate's unit tests also use /var/tmp for this reason
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir_in("/var/tmp"));
+    let rdr = Cursor::new(tar!("xattrs.tar"));
+    let mut ar = Archive::new(rdr);
+    ar.set_unpack_xattrs(false);
+    t!(ar.unpack(td.path()));
+
+    assert_eq!(
+        xattr::get(td.path().join("a/b"), "user.pax.flags").unwrap(),
+        None
+    );
+}
+
+#[test]
+fn writing_and_extracting_directories() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+
+    let mut ar = Builder::new(Vec::new());
+    let tmppath = td.path().join("tmpfile");
+    t!(t!(File::create(&tmppath)).write_all(b"c"));
+    t!(ar.append_dir("a", "."));
+    t!(ar.append_dir("a/b", "."));
+    t!(ar.append_file("a/c", &mut t!(File::open(&tmppath))));
+    t!(ar.finish());
+
+    let rdr = Cursor::new(t!(ar.into_inner()));
+    let mut ar = Archive::new(rdr);
+    t!(ar.unpack(td.path()));
+    check_dirtree(&td);
+}
+
+#[test]
+fn writing_directories_recursively() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+
+    let base_dir = td.path().join("base");
+    t!(fs::create_dir(&base_dir));
+    t!(t!(File::create(base_dir.join("file1"))).write_all(b"file1"));
+    let sub_dir = base_dir.join("sub");
+    t!(fs::create_dir(&sub_dir));
+    t!(t!(File::create(sub_dir.join("file2"))).write_all(b"file2"));
+
+    let mut ar = Builder::new(Vec::new());
+    t!(ar.append_dir_all("foobar", base_dir));
+    let data = t!(ar.into_inner());
+
+    let mut ar = Archive::new(Cursor::new(data));
+    t!(ar.unpack(td.path()));
+    let base_dir = td.path().join("foobar");
+    assert!(fs::metadata(&base_dir).map(|m| m.is_dir()).unwrap_or(false));
+    let file1_path = base_dir.join("file1");
+    assert!(fs::metadata(&file1_path)
+        .map(|m| m.is_file())
+        .unwrap_or(false));
+    let sub_dir = base_dir.join("sub");
+    assert!(fs::metadata(&sub_dir).map(|m| m.is_dir()).unwrap_or(false));
+    let file2_path = sub_dir.join("file2");
+    assert!(fs::metadata(&file2_path)
+        .map(|m| m.is_file())
+        .unwrap_or(false));
+}
+
+#[test]
+fn append_dir_all_blank_dest() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+
+    let base_dir = td.path().join("base");
+    t!(fs::create_dir(&base_dir));
+    t!(t!(File::create(base_dir.join("file1"))).write_all(b"file1"));
+    let sub_dir = base_dir.join("sub");
+    t!(fs::create_dir(&sub_dir));
+    t!(t!(File::create(sub_dir.join("file2"))).write_all(b"file2"));
+
+    let mut ar = Builder::new(Vec::new());
+    t!(ar.append_dir_all("", base_dir));
+    let data = t!(ar.into_inner());
+
+    let mut ar = Archive::new(Cursor::new(data));
+    t!(ar.unpack(td.path()));
+    let base_dir = td.path();
+    assert!(fs::metadata(&base_dir).map(|m| m.is_dir()).unwrap_or(false));
+    let file1_path = base_dir.join("file1");
+    assert!(fs::metadata(&file1_path)
+        .map(|m| m.is_file())
+        .unwrap_or(false));
+    let sub_dir = base_dir.join("sub");
+    assert!(fs::metadata(&sub_dir).map(|m| m.is_dir()).unwrap_or(false));
+    let file2_path = sub_dir.join("file2");
+    assert!(fs::metadata(&file2_path)
+        .map(|m| m.is_file())
+        .unwrap_or(false));
+}
+
+#[test]
+fn append_dir_all_does_not_work_on_non_directory() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+    let path = td.path().join("test");
+    t!(t!(File::create(&path)).write_all(b"test"));
+
+    let mut ar = Builder::new(Vec::new());
+    let result = ar.append_dir_all("test", path);
+    assert!(result.is_err());
+}
+
+#[test]
+fn extracting_duplicate_dirs() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+    let rdr = Cursor::new(tar!("duplicate_dirs.tar"));
+    let mut ar = Archive::new(rdr);
+    t!(ar.unpack(td.path()));
+
+    let some_dir = td.path().join("some_dir");
+    assert!(fs::metadata(&some_dir).map(|m| m.is_dir()).unwrap_or(false));
+}
+
+#[test]
+fn unpack_old_style_bsd_dir() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+
+    let mut ar = Builder::new(Vec::new());
+
+    let mut header = Header::new_old();
+    header.set_entry_type(EntryType::Regular);
+    t!(header.set_path("testdir/"));
+    header.set_size(0);
+    header.set_cksum();
+    t!(ar.append(&header, &mut io::empty()));
+
+    // Extracting
+    let rdr = Cursor::new(t!(ar.into_inner()));
+    let mut ar = Archive::new(rdr);
+    t!(ar.unpack(td.path()));
+
+    // Iterating
+    let rdr = Cursor::new(ar.into_inner().into_inner());
+    let mut ar = Archive::new(rdr);
+    assert!(t!(ar.entries()).all(|fr| fr.is_ok()));
+
+    assert!(td.path().join("testdir").is_dir());
+}
+
+#[test]
+fn handling_incorrect_file_size() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+
+    let mut ar = Builder::new(Vec::new());
+
+    let path = td.path().join("tmpfile");
+    t!(File::create(&path));
+    let mut file = t!(File::open(&path));
+    let mut header = Header::new_old();
+    t!(header.set_path("somepath"));
+    header.set_metadata(&t!(file.metadata()));
+    header.set_size(2048); // past the end of file null blocks
+    header.set_cksum();
+    t!(ar.append(&header, &mut file));
+
+    // Extracting
+    let rdr = Cursor::new(t!(ar.into_inner()));
+    let mut ar = Archive::new(rdr);
+    assert!(ar.unpack(td.path()).is_err());
+
+    // Iterating
+    let rdr = Cursor::new(ar.into_inner().into_inner());
+    let mut ar = Archive::new(rdr);
+    assert!(t!(ar.entries()).any(|fr| fr.is_err()));
+}
+
+#[test]
+fn extracting_malicious_tarball() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+
+    let mut evil_tar = Vec::new();
+
+    {
+        let mut a = Builder::new(&mut evil_tar);
+        let mut append = |path: &str| {
+            let mut header = Header::new_gnu();
+            assert!(header.set_path(path).is_err(), "was ok: {:?}", path);
+            {
+                let h = header.as_gnu_mut().unwrap();
+                for (a, b) in h.name.iter_mut().zip(path.as_bytes()) {
+                    *a = *b;
+                }
+            }
+            header.set_size(1);
+            header.set_cksum();
+            t!(a.append(&header, io::repeat(1).take(1)));
+        };
+        append("/tmp/abs_evil.txt");
+        append("//tmp/abs_evil2.txt");
+        append("///tmp/abs_evil3.txt");
+        append("/./tmp/abs_evil4.txt");
+        append("//./tmp/abs_evil5.txt");
+        append("///./tmp/abs_evil6.txt");
+        append("/../tmp/rel_evil.txt");
+        append("../rel_evil2.txt");
+        append("./../rel_evil3.txt");
+        append("some/../../rel_evil4.txt");
+        append("");
+        append("././//./..");
+        append("..");
+        append("/////////..");
+        append("/////////");
+    }
+
+    let mut ar = Archive::new(&evil_tar[..]);
+    t!(ar.unpack(td.path()));
+
+    assert!(fs::metadata("/tmp/abs_evil.txt").is_err());
+    assert!(fs::metadata("/tmp/abs_evil.txt2").is_err());
+    assert!(fs::metadata("/tmp/abs_evil.txt3").is_err());
+    assert!(fs::metadata("/tmp/abs_evil.txt4").is_err());
+    assert!(fs::metadata("/tmp/abs_evil.txt5").is_err());
+    assert!(fs::metadata("/tmp/abs_evil.txt6").is_err());
+    assert!(fs::metadata("/tmp/rel_evil.txt").is_err());
+    assert!(fs::metadata("/tmp/rel_evil.txt").is_err());
+    assert!(fs::metadata(td.path().join("../tmp/rel_evil.txt")).is_err());
+    assert!(fs::metadata(td.path().join("../rel_evil2.txt")).is_err());
+    assert!(fs::metadata(td.path().join("../rel_evil3.txt")).is_err());
+    assert!(fs::metadata(td.path().join("../rel_evil4.txt")).is_err());
+
+    // The `some` subdirectory should not be created because the only
+    // filename that references this has '..'.
+    assert!(fs::metadata(td.path().join("some")).is_err());
+
+    // The `tmp` subdirectory should be created and within this
+    // subdirectory, there should be files named `abs_evil.txt` through
+    // `abs_evil6.txt`.
+    assert!(fs::metadata(td.path().join("tmp"))
+        .map(|m| m.is_dir())
+        .unwrap_or(false));
+    assert!(fs::metadata(td.path().join("tmp/abs_evil.txt"))
+        .map(|m| m.is_file())
+        .unwrap_or(false));
+    assert!(fs::metadata(td.path().join("tmp/abs_evil2.txt"))
+        .map(|m| m.is_file())
+        .unwrap_or(false));
+    assert!(fs::metadata(td.path().join("tmp/abs_evil3.txt"))
+        .map(|m| m.is_file())
+        .unwrap_or(false));
+    assert!(fs::metadata(td.path().join("tmp/abs_evil4.txt"))
+        .map(|m| m.is_file())
+        .unwrap_or(false));
+    assert!(fs::metadata(td.path().join("tmp/abs_evil5.txt"))
+        .map(|m| m.is_file())
+        .unwrap_or(false));
+    assert!(fs::metadata(td.path().join("tmp/abs_evil6.txt"))
+        .map(|m| m.is_file())
+        .unwrap_or(false));
+}
+
+#[test]
+fn octal_spaces() {
+    let rdr = Cursor::new(tar!("spaces.tar"));
+    let mut ar = Archive::new(rdr);
+
+    let entry = ar.entries().unwrap().next().unwrap().unwrap();
+    assert_eq!(entry.header().mode().unwrap() & 0o777, 0o777);
+    assert_eq!(entry.header().uid().unwrap(), 0);
+    assert_eq!(entry.header().gid().unwrap(), 0);
+    assert_eq!(entry.header().size().unwrap(), 2);
+    assert_eq!(entry.header().mtime().unwrap(), 0o12440016664);
+    assert_eq!(entry.header().cksum().unwrap(), 0o4253);
+}
+
+#[test]
+fn extracting_malformed_tar_null_blocks() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+
+    let mut ar = Builder::new(Vec::new());
+
+    let path1 = td.path().join("tmpfile1");
+    let path2 = td.path().join("tmpfile2");
+    t!(File::create(&path1));
+    t!(File::create(&path2));
+    t!(ar.append_file("tmpfile1", &mut t!(File::open(&path1))));
+    let mut data = t!(ar.into_inner());
+    let amt = data.len();
+    data.truncate(amt - 512);
+    let mut ar = Builder::new(data);
+    t!(ar.append_file("tmpfile2", &mut t!(File::open(&path2))));
+    t!(ar.finish());
+
+    let data = t!(ar.into_inner());
+    let mut ar = Archive::new(&data[..]);
+    assert!(ar.unpack(td.path()).is_ok());
+}
+
+#[test]
+fn empty_filename() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+    let rdr = Cursor::new(tar!("empty_filename.tar"));
+    let mut ar = Archive::new(rdr);
+    assert!(ar.unpack(td.path()).is_ok());
+}
+
+#[test]
+fn file_times() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+    let rdr = Cursor::new(tar!("file_times.tar"));
+    let mut ar = Archive::new(rdr);
+    t!(ar.unpack(td.path()));
+
+    let meta = fs::metadata(td.path().join("a")).unwrap();
+    let mtime = FileTime::from_last_modification_time(&meta);
+    let atime = FileTime::from_last_access_time(&meta);
+    assert_eq!(mtime.unix_seconds(), 1000000000);
+    assert_eq!(mtime.nanoseconds(), 0);
+    assert_eq!(atime.unix_seconds(), 1000000000);
+    assert_eq!(atime.nanoseconds(), 0);
+}
+
+#[test]
+fn zero_file_times() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+
+    let mut ar = Builder::new(Vec::new());
+    ar.mode(HeaderMode::Deterministic);
+    let path = td.path().join("tmpfile");
+    t!(File::create(&path));
+    t!(ar.append_path_with_name(&path, "a"));
+
+    let data = t!(ar.into_inner());
+    let mut ar = Archive::new(&data[..]);
+    assert!(ar.unpack(td.path()).is_ok());
+
+    let meta = fs::metadata(td.path().join("a")).unwrap();
+    let mtime = FileTime::from_last_modification_time(&meta);
+    let atime = FileTime::from_last_access_time(&meta);
+    assert!(mtime.unix_seconds() != 0);
+    assert!(atime.unix_seconds() != 0);
+}
+
+#[test]
+fn backslash_treated_well() {
+    // Insert a file into an archive with a backslash
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+    let mut ar = Builder::new(Vec::<u8>::new());
+    t!(ar.append_dir("foo\\bar", td.path()));
+    let mut ar = Archive::new(Cursor::new(t!(ar.into_inner())));
+    let f = t!(t!(ar.entries()).next().unwrap());
+    if cfg!(unix) {
+        assert_eq!(t!(f.header().path()).to_str(), Some("foo\\bar"));
+    } else {
+        assert_eq!(t!(f.header().path()).to_str(), Some("foo/bar"));
+    }
+
+    // Unpack an archive with a backslash in the name
+    let mut ar = Builder::new(Vec::<u8>::new());
+    let mut header = Header::new_gnu();
+    header.set_metadata(&t!(fs::metadata(td.path())));
+    header.set_size(0);
+    for (a, b) in header.as_old_mut().name.iter_mut().zip(b"foo\\bar\x00") {
+        *a = *b;
+    }
+    header.set_cksum();
+    t!(ar.append(&header, &mut io::empty()));
+    let data = t!(ar.into_inner());
+    let mut ar = Archive::new(&data[..]);
+    let f = t!(t!(ar.entries()).next().unwrap());
+    assert_eq!(t!(f.header().path()).to_str(), Some("foo\\bar"));
+
+    let mut ar = Archive::new(&data[..]);
+    t!(ar.unpack(td.path()));
+    assert!(fs::metadata(td.path().join("foo\\bar")).is_ok());
+}
+
+#[cfg(unix)]
+#[test]
+fn nul_bytes_in_path() {
+    use std::ffi::OsStr;
+    use std::os::unix::prelude::*;
+
+    let nul_path = OsStr::from_bytes(b"foo\0");
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+    let mut ar = Builder::new(Vec::<u8>::new());
+    let err = ar.append_dir(nul_path, td.path()).unwrap_err();
+    assert!(err.to_string().contains("contains a nul byte"));
+}
+
+#[test]
+fn links() {
+    let mut ar = Archive::new(Cursor::new(tar!("link.tar")));
+    let mut entries = t!(ar.entries());
+    let link = t!(entries.next().unwrap());
+    assert_eq!(
+        t!(link.header().link_name()).as_ref().map(|p| &**p),
+        Some(Path::new("file"))
+    );
+    let other = t!(entries.next().unwrap());
+    assert!(t!(other.header().link_name()).is_none());
+}
+
+#[test]
+#[cfg(unix)] // making symlinks on windows is hard
+fn unpack_links() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+    let mut ar = Archive::new(Cursor::new(tar!("link.tar")));
+    t!(ar.unpack(td.path()));
+
+    let md = t!(fs::symlink_metadata(td.path().join("lnk")));
+    assert!(md.file_type().is_symlink());
+    assert_eq!(
+        &*t!(fs::read_link(td.path().join("lnk"))),
+        Path::new("file")
+    );
+    t!(File::open(td.path().join("lnk")));
+}
+
+#[test]
+fn pax_size() {
+    let mut ar = Archive::new(tar!("pax_size.tar"));
+    let mut entries = t!(ar.entries());
+    let mut entry = t!(entries.next().unwrap());
+    let mut attributes = t!(entry.pax_extensions()).unwrap();
+
+    let _first = t!(attributes.next().unwrap());
+    let _second = t!(attributes.next().unwrap());
+    let _third = t!(attributes.next().unwrap());
+    let fourth = t!(attributes.next().unwrap());
+    assert!(attributes.next().is_none());
+
+    assert_eq!(fourth.key(), Ok("size"));
+    assert_eq!(fourth.value(), Ok("4"));
+
+    assert_eq!(entry.header().size().unwrap(), 0);
+    assert_eq!(entry.size(), 4);
+}
+
+#[test]
+fn pax_simple() {
+    let mut ar = Archive::new(tar!("pax.tar"));
+    let mut entries = t!(ar.entries());
+
+    let mut first = t!(entries.next().unwrap());
+    let mut attributes = t!(first.pax_extensions()).unwrap();
+    let first = t!(attributes.next().unwrap());
+    let second = t!(attributes.next().unwrap());
+    let third = t!(attributes.next().unwrap());
+    assert!(attributes.next().is_none());
+
+    assert_eq!(first.key(), Ok("mtime"));
+    assert_eq!(first.value(), Ok("1453146164.953123768"));
+    assert_eq!(second.key(), Ok("atime"));
+    assert_eq!(second.value(), Ok("1453251915.24892486"));
+    assert_eq!(third.key(), Ok("ctime"));
+    assert_eq!(third.value(), Ok("1453146164.953123768"));
+}
+
+#[test]
+fn pax_path() {
+    let mut ar = Archive::new(tar!("pax2.tar"));
+    let mut entries = t!(ar.entries());
+
+    let first = t!(entries.next().unwrap());
+    assert!(first.path().unwrap().ends_with("aaaaaaaaaaaaaaa"));
+}
+
+#[test]
+fn pax_linkpath() {
+    let mut ar = Archive::new(tar!("pax2.tar"));
+    let mut links = t!(ar.entries()).skip(3).take(2);
+
+    let long_symlink = t!(links.next().unwrap());
+    let link_name = long_symlink.link_name().unwrap().unwrap();
+    assert!(link_name.to_str().unwrap().len() > 99);
+    assert!(link_name.ends_with("bbbbbbbbbbbbbbb"));
+
+    let long_hardlink = t!(links.next().unwrap());
+    let link_name = long_hardlink.link_name().unwrap().unwrap();
+    assert!(link_name.to_str().unwrap().len() > 99);
+    assert!(link_name.ends_with("ccccccccccccccc"));
+}
+
+#[test]
+fn long_name_trailing_nul() {
+    let mut b = Builder::new(Vec::<u8>::new());
+
+    let mut h = Header::new_gnu();
+    t!(h.set_path("././@LongLink"));
+    h.set_size(4);
+    h.set_entry_type(EntryType::new(b'L'));
+    h.set_cksum();
+    t!(b.append(&h, "foo\0".as_bytes()));
+    let mut h = Header::new_gnu();
+
+    t!(h.set_path("bar"));
+    h.set_size(6);
+    h.set_entry_type(EntryType::file());
+    h.set_cksum();
+    t!(b.append(&h, "foobar".as_bytes()));
+
+    let contents = t!(b.into_inner());
+    let mut a = Archive::new(&contents[..]);
+
+    let e = t!(t!(a.entries()).next().unwrap());
+    assert_eq!(&*e.path_bytes(), b"foo");
+}
+
+#[test]
+fn long_linkname_trailing_nul() {
+    let mut b = Builder::new(Vec::<u8>::new());
+
+    let mut h = Header::new_gnu();
+    t!(h.set_path("././@LongLink"));
+    h.set_size(4);
+    h.set_entry_type(EntryType::new(b'K'));
+    h.set_cksum();
+    t!(b.append(&h, "foo\0".as_bytes()));
+    let mut h = Header::new_gnu();
+
+    t!(h.set_path("bar"));
+    h.set_size(6);
+    h.set_entry_type(EntryType::file());
+    h.set_cksum();
+    t!(b.append(&h, "foobar".as_bytes()));
+
+    let contents = t!(b.into_inner());
+    let mut a = Archive::new(&contents[..]);
+
+    let e = t!(t!(a.entries()).next().unwrap());
+    assert_eq!(&*e.link_name_bytes().unwrap(), b"foo");
+}
+
+#[test]
+fn long_linkname_gnu() {
+    for t in [tar::EntryType::Symlink, tar::EntryType::Link] {
+        let mut b = Builder::new(Vec::<u8>::new());
+        let mut h = Header::new_gnu();
+        h.set_entry_type(t);
+        h.set_size(0);
+        let path = "usr/lib/.build-id/05/159ed904e45ff5100f7acd3d3b99fa7e27e34f";
+        let target = "../../../../usr/lib64/qt5/plugins/wayland-graphics-integration-server/libqt-wayland-compositor-xcomposite-egl.so";
+        t!(b.append_link(&mut h, path, target));
+
+        let contents = t!(b.into_inner());
+        let mut a = Archive::new(&contents[..]);
+
+        let e = &t!(t!(a.entries()).next().unwrap());
+        assert_eq!(e.header().entry_type(), t);
+        assert_eq!(e.path().unwrap().to_str().unwrap(), path);
+        assert_eq!(e.link_name().unwrap().unwrap().to_str().unwrap(), target);
+    }
+}
+
+#[test]
+fn linkname_literal() {
+    for t in [tar::EntryType::Symlink, tar::EntryType::Link] {
+        let mut b = Builder::new(Vec::<u8>::new());
+        let mut h = Header::new_gnu();
+        h.set_entry_type(t);
+        h.set_size(0);
+        let path = "usr/lib/systemd/systemd-sysv-install";
+        let target = "../../..//sbin/chkconfig";
+        h.set_link_name_literal(target).unwrap();
+        t!(b.append_data(&mut h, path, std::io::empty()));
+
+        let contents = t!(b.into_inner());
+        let mut a = Archive::new(&contents[..]);
+
+        let e = &t!(t!(a.entries()).next().unwrap());
+        assert_eq!(e.header().entry_type(), t);
+        assert_eq!(e.path().unwrap().to_str().unwrap(), path);
+        assert_eq!(e.link_name().unwrap().unwrap().to_str().unwrap(), target);
+    }
+}
+
+#[test]
+fn encoded_long_name_has_trailing_nul() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+    let path = td.path().join("foo");
+    t!(t!(File::create(&path)).write_all(b"test"));
+
+    let mut b = Builder::new(Vec::<u8>::new());
+    let long = repeat("abcd").take(200).collect::<String>();
+
+    t!(b.append_file(&long, &mut t!(File::open(&path))));
+
+    let contents = t!(b.into_inner());
+    let mut a = Archive::new(&contents[..]);
+
+    let mut e = t!(t!(a.entries()).raw(true).next().unwrap());
+    let mut name = Vec::new();
+    t!(e.read_to_end(&mut name));
+    assert_eq!(name[name.len() - 1], 0);
+
+    let header_name = &e.header().as_gnu().unwrap().name;
+    assert!(header_name.starts_with(b"././@LongLink\x00"));
+}
+
+#[test]
+fn reading_sparse() {
+    let rdr = Cursor::new(tar!("sparse.tar"));
+    let mut ar = Archive::new(rdr);
+    let mut entries = t!(ar.entries());
+
+    let mut a = t!(entries.next().unwrap());
+    let mut s = String::new();
+    assert_eq!(&*a.header().path_bytes(), b"sparse_begin.txt");
+    t!(a.read_to_string(&mut s));
+    assert_eq!(&s[..5], "test\n");
+    assert!(s[5..].chars().all(|x| x == '\u{0}'));
+
+    let mut a = t!(entries.next().unwrap());
+    let mut s = String::new();
+    assert_eq!(&*a.header().path_bytes(), b"sparse_end.txt");
+    t!(a.read_to_string(&mut s));
+    assert!(s[..s.len() - 9].chars().all(|x| x == '\u{0}'));
+    assert_eq!(&s[s.len() - 9..], "test_end\n");
+
+    let mut a = t!(entries.next().unwrap());
+    let mut s = String::new();
+    assert_eq!(&*a.header().path_bytes(), b"sparse_ext.txt");
+    t!(a.read_to_string(&mut s));
+    assert!(s[..0x1000].chars().all(|x| x == '\u{0}'));
+    assert_eq!(&s[0x1000..0x1000 + 5], "text\n");
+    assert!(s[0x1000 + 5..0x3000].chars().all(|x| x == '\u{0}'));
+    assert_eq!(&s[0x3000..0x3000 + 5], "text\n");
+    assert!(s[0x3000 + 5..0x5000].chars().all(|x| x == '\u{0}'));
+    assert_eq!(&s[0x5000..0x5000 + 5], "text\n");
+    assert!(s[0x5000 + 5..0x7000].chars().all(|x| x == '\u{0}'));
+    assert_eq!(&s[0x7000..0x7000 + 5], "text\n");
+    assert!(s[0x7000 + 5..0x9000].chars().all(|x| x == '\u{0}'));
+    assert_eq!(&s[0x9000..0x9000 + 5], "text\n");
+    assert!(s[0x9000 + 5..0xb000].chars().all(|x| x == '\u{0}'));
+    assert_eq!(&s[0xb000..0xb000 + 5], "text\n");
+
+    let mut a = t!(entries.next().unwrap());
+    let mut s = String::new();
+    assert_eq!(&*a.header().path_bytes(), b"sparse.txt");
+    t!(a.read_to_string(&mut s));
+    assert!(s[..0x1000].chars().all(|x| x == '\u{0}'));
+    assert_eq!(&s[0x1000..0x1000 + 6], "hello\n");
+    assert!(s[0x1000 + 6..0x2fa0].chars().all(|x| x == '\u{0}'));
+    assert_eq!(&s[0x2fa0..0x2fa0 + 6], "world\n");
+    assert!(s[0x2fa0 + 6..0x4000].chars().all(|x| x == '\u{0}'));
+
+    assert!(entries.next().is_none());
+}
+
+#[test]
+fn extract_sparse() {
+    let rdr = Cursor::new(tar!("sparse.tar"));
+    let mut ar = Archive::new(rdr);
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+    t!(ar.unpack(td.path()));
+
+    let mut s = String::new();
+    t!(t!(File::open(td.path().join("sparse_begin.txt"))).read_to_string(&mut s));
+    assert_eq!(&s[..5], "test\n");
+    assert!(s[5..].chars().all(|x| x == '\u{0}'));
+
+    s.truncate(0);
+    t!(t!(File::open(td.path().join("sparse_end.txt"))).read_to_string(&mut s));
+    assert!(s[..s.len() - 9].chars().all(|x| x == '\u{0}'));
+    assert_eq!(&s[s.len() - 9..], "test_end\n");
+
+    s.truncate(0);
+    t!(t!(File::open(td.path().join("sparse_ext.txt"))).read_to_string(&mut s));
+    assert!(s[..0x1000].chars().all(|x| x == '\u{0}'));
+    assert_eq!(&s[0x1000..0x1000 + 5], "text\n");
+    assert!(s[0x1000 + 5..0x3000].chars().all(|x| x == '\u{0}'));
+    assert_eq!(&s[0x3000..0x3000 + 5], "text\n");
+    assert!(s[0x3000 + 5..0x5000].chars().all(|x| x == '\u{0}'));
+    assert_eq!(&s[0x5000..0x5000 + 5], "text\n");
+    assert!(s[0x5000 + 5..0x7000].chars().all(|x| x == '\u{0}'));
+    assert_eq!(&s[0x7000..0x7000 + 5], "text\n");
+    assert!(s[0x7000 + 5..0x9000].chars().all(|x| x == '\u{0}'));
+    assert_eq!(&s[0x9000..0x9000 + 5], "text\n");
+    assert!(s[0x9000 + 5..0xb000].chars().all(|x| x == '\u{0}'));
+    assert_eq!(&s[0xb000..0xb000 + 5], "text\n");
+
+    s.truncate(0);
+    t!(t!(File::open(td.path().join("sparse.txt"))).read_to_string(&mut s));
+    assert!(s[..0x1000].chars().all(|x| x == '\u{0}'));
+    assert_eq!(&s[0x1000..0x1000 + 6], "hello\n");
+    assert!(s[0x1000 + 6..0x2fa0].chars().all(|x| x == '\u{0}'));
+    assert_eq!(&s[0x2fa0..0x2fa0 + 6], "world\n");
+    assert!(s[0x2fa0 + 6..0x4000].chars().all(|x| x == '\u{0}'));
+}
+
+#[test]
+fn sparse_with_trailing() {
+    let rdr = Cursor::new(tar!("sparse-1.tar"));
+    let mut ar = Archive::new(rdr);
+    let mut entries = t!(ar.entries());
+    let mut a = t!(entries.next().unwrap());
+    let mut s = String::new();
+    t!(a.read_to_string(&mut s));
+    assert_eq!(0x100_00c, s.len());
+    assert_eq!(&s[..0xc], "0MB through\n");
+    assert!(s[0xc..0x100_000].chars().all(|x| x == '\u{0}'));
+    assert_eq!(&s[0x100_000..], "1MB through\n");
+}
+
+#[test]
+fn path_separators() {
+    let mut ar = Builder::new(Vec::new());
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+
+    let path = td.path().join("test");
+    t!(t!(File::create(&path)).write_all(b"test"));
+
+    let short_path: PathBuf = repeat("abcd").take(2).collect();
+    let long_path: PathBuf = repeat("abcd").take(50).collect();
+
+    // Make sure UStar headers normalize to Unix path separators
+    let mut header = Header::new_ustar();
+
+    t!(header.set_path(&short_path));
+    assert_eq!(t!(header.path()), short_path);
+    assert!(!header.path_bytes().contains(&b'\\'));
+
+    t!(header.set_path(&long_path));
+    assert_eq!(t!(header.path()), long_path);
+    assert!(!header.path_bytes().contains(&b'\\'));
+
+    // Make sure GNU headers normalize to Unix path separators,
+    // including the `@LongLink` fallback used by `append_file`.
+    t!(ar.append_file(&short_path, &mut t!(File::open(&path))));
+    t!(ar.append_file(&long_path, &mut t!(File::open(&path))));
+
+    let rd = Cursor::new(t!(ar.into_inner()));
+    let mut ar = Archive::new(rd);
+    let mut entries = t!(ar.entries());
+
+    let entry = t!(entries.next().unwrap());
+    assert_eq!(t!(entry.path()), short_path);
+    assert!(!entry.path_bytes().contains(&b'\\'));
+
+    let entry = t!(entries.next().unwrap());
+    assert_eq!(t!(entry.path()), long_path);
+    assert!(!entry.path_bytes().contains(&b'\\'));
+
+    assert!(entries.next().is_none());
+}
+
+#[test]
+#[cfg(unix)]
+fn append_path_symlink() {
+    use std::borrow::Cow;
+    use std::env;
+    use std::os::unix::fs::symlink;
+
+    let mut ar = Builder::new(Vec::new());
+    ar.follow_symlinks(false);
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+
+    let long_linkname = repeat("abcd").take(30).collect::<String>();
+    let long_pathname = repeat("dcba").take(30).collect::<String>();
+    t!(env::set_current_dir(td.path()));
+    // "short" path name / short link name
+    t!(symlink("testdest", "test"));
+    t!(ar.append_path("test"));
+    // short path name / long link name
+    t!(symlink(&long_linkname, "test2"));
+    t!(ar.append_path("test2"));
+    // long path name / long link name
+    t!(symlink(&long_linkname, &long_pathname));
+    t!(ar.append_path(&long_pathname));
+
+    let rd = Cursor::new(t!(ar.into_inner()));
+    let mut ar = Archive::new(rd);
+    let mut entries = t!(ar.entries());
+
+    let entry = t!(entries.next().unwrap());
+    assert_eq!(t!(entry.path()), Path::new("test"));
+    assert_eq!(
+        t!(entry.link_name()),
+        Some(Cow::from(Path::new("testdest")))
+    );
+    assert_eq!(t!(entry.header().size()), 0);
+
+    let entry = t!(entries.next().unwrap());
+    assert_eq!(t!(entry.path()), Path::new("test2"));
+    assert_eq!(
+        t!(entry.link_name()),
+        Some(Cow::from(Path::new(&long_linkname)))
+    );
+    assert_eq!(t!(entry.header().size()), 0);
+
+    let entry = t!(entries.next().unwrap());
+    assert_eq!(t!(entry.path()), Path::new(&long_pathname));
+    assert_eq!(
+        t!(entry.link_name()),
+        Some(Cow::from(Path::new(&long_linkname)))
+    );
+    assert_eq!(t!(entry.header().size()), 0);
+
+    assert!(entries.next().is_none());
+}
+
+#[test]
+fn name_with_slash_doesnt_fool_long_link_and_bsd_compat() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+
+    let mut ar = Builder::new(Vec::new());
+
+    let mut h = Header::new_gnu();
+    t!(h.set_path("././@LongLink"));
+    h.set_size(4);
+    h.set_entry_type(EntryType::new(b'L'));
+    h.set_cksum();
+    t!(ar.append(&h, "foo\0".as_bytes()));
+
+    let mut header = Header::new_gnu();
+    header.set_entry_type(EntryType::Regular);
+    t!(header.set_path("testdir/"));
+    header.set_size(0);
+    header.set_cksum();
+    t!(ar.append(&header, &mut io::empty()));
+
+    // Extracting
+    let rdr = Cursor::new(t!(ar.into_inner()));
+    let mut ar = Archive::new(rdr);
+    t!(ar.unpack(td.path()));
+
+    // Iterating
+    let rdr = Cursor::new(ar.into_inner().into_inner());
+    let mut ar = Archive::new(rdr);
+    assert!(t!(ar.entries()).all(|fr| fr.is_ok()));
+
+    assert!(td.path().join("foo").is_file());
+}
+
+#[test]
+fn insert_local_file_different_name() {
+    let mut ar = Builder::new(Vec::new());
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+    let path = td.path().join("directory");
+    t!(fs::create_dir(&path));
+    ar.append_path_with_name(&path, "archive/dir").unwrap();
+    let path = td.path().join("file");
+    t!(t!(File::create(&path)).write_all(b"test"));
+    ar.append_path_with_name(&path, "archive/dir/f").unwrap();
+
+    let rd = Cursor::new(t!(ar.into_inner()));
+    let mut ar = Archive::new(rd);
+    let mut entries = t!(ar.entries());
+    let entry = t!(entries.next().unwrap());
+    assert_eq!(t!(entry.path()), Path::new("archive/dir"));
+    let entry = t!(entries.next().unwrap());
+    assert_eq!(t!(entry.path()), Path::new("archive/dir/f"));
+    assert!(entries.next().is_none());
+}
+
+#[test]
+#[cfg(unix)]
+fn tar_directory_containing_symlink_to_directory() {
+    use std::os::unix::fs::symlink;
+
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+    let dummy_src = t!(TempBuilder::new().prefix("dummy_src").tempdir());
+    let dummy_dst = td.path().join("dummy_dst");
+    let mut ar = Builder::new(Vec::new());
+    t!(symlink(dummy_src.path().display().to_string(), &dummy_dst));
+
+    assert!(dummy_dst.read_link().is_ok());
+    assert!(dummy_dst.read_link().unwrap().is_dir());
+    ar.append_dir_all("symlinks", td.path()).unwrap();
+    ar.finish().unwrap();
+}
+
+#[test]
+fn long_path() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+    let rdr = Cursor::new(tar!("7z_long_path.tar"));
+    let mut ar = Archive::new(rdr);
+    assert!(ar.unpack(td.path()).is_ok());
+}
+
+#[test]
+fn unpack_path_larger_than_windows_max_path() {
+    let dir_name = "iamaprettylongnameandtobepreciseiam91characterslongwhichsomethinkisreallylongandothersdonot";
+    // 183 character directory name
+    let really_long_path = format!("{}{}", dir_name, dir_name);
+    let td = t!(TempBuilder::new().prefix(&really_long_path).tempdir());
+    // directory in 7z_long_path.tar is over 100 chars
+    let rdr = Cursor::new(tar!("7z_long_path.tar"));
+    let mut ar = Archive::new(rdr);
+    // should unpack path greater than windows MAX_PATH length of 260 characters
+    assert!(ar.unpack(td.path()).is_ok());
+}
+
+#[test]
+fn append_long_multibyte() {
+    let mut x = tar::Builder::new(Vec::new());
+    let mut name = String::new();
+    let data: &[u8] = &[];
+    for _ in 0..512 {
+        name.push('a');
+        name.push('𑢮');
+        x.append_data(&mut Header::new_gnu(), &name, data).unwrap();
+        name.pop();
+    }
+}
+
+#[test]
+fn read_only_directory_containing_files() {
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+
+    let mut b = Builder::new(Vec::<u8>::new());
+
+    let mut h = Header::new_gnu();
+    t!(h.set_path("dir/"));
+    h.set_size(0);
+    h.set_entry_type(EntryType::dir());
+    h.set_mode(0o444);
+    h.set_cksum();
+    t!(b.append(&h, "".as_bytes()));
+
+    let mut h = Header::new_gnu();
+    t!(h.set_path("dir/file"));
+    h.set_size(2);
+    h.set_entry_type(EntryType::file());
+    h.set_cksum();
+    t!(b.append(&h, "hi".as_bytes()));
+
+    let contents = t!(b.into_inner());
+    let mut ar = Archive::new(&contents[..]);
+    assert!(ar.unpack(td.path()).is_ok());
+}
+
+// This test was marked linux only due to macOS CI can't handle `set_current_dir` correctly
+#[test]
+#[cfg(target_os = "linux")]
+fn tar_directory_containing_special_files() {
+    use std::env;
+    use std::ffi::CString;
+
+    let td = t!(TempBuilder::new().prefix("tar-rs").tempdir());
+    let fifo = td.path().join("fifo");
+
+    unsafe {
+        let fifo_path = t!(CString::new(fifo.to_str().unwrap()));
+        let ret = libc::mknod(fifo_path.as_ptr(), libc::S_IFIFO | 0o644, 0);
+        if ret != 0 {
+            libc::perror(fifo_path.as_ptr());
+            panic!("Failed to create a FIFO file");
+        }
+    }
+
+    t!(env::set_current_dir(td.path()));
+    let mut ar = Builder::new(Vec::new());
+    // append_path has a different logic for processing files, so we need to test it as well
+    t!(ar.append_path("fifo"));
+    t!(ar.append_dir_all("special", td.path()));
+    // unfortunately, block device file cannot be created by non-root users
+    // as a substitute, just test the file that exists on most Unix systems
+    t!(env::set_current_dir("/dev/"));
+    t!(ar.append_path("loop0"));
+    // CI systems seem to have issues with creating a chr device
+    t!(ar.append_path("null"));
+    t!(ar.finish());
+}
+
+#[test]
+fn header_size_overflow() {
+    // maximal file size doesn't overflow anything
+    let mut ar = Builder::new(Vec::new());
+    let mut header = Header::new_gnu();
+    header.set_size(u64::MAX);
+    header.set_cksum();
+    ar.append(&mut header, "x".as_bytes()).unwrap();
+    let result = t!(ar.into_inner());
+    let mut ar = Archive::new(&result[..]);
+    let mut e = ar.entries().unwrap();
+    let err = e.next().unwrap().err().unwrap();
+    assert!(
+        err.to_string().contains("size overflow"),
+        "bad error: {}",
+        err
+    );
+
+    // back-to-back entries that would overflow also don't panic
+    let mut ar = Builder::new(Vec::new());
+    let mut header = Header::new_gnu();
+    header.set_size(1_000);
+    header.set_cksum();
+    ar.append(&mut header, &[0u8; 1_000][..]).unwrap();
+    let mut header = Header::new_gnu();
+    header.set_size(u64::MAX - 513);
+    header.set_cksum();
+    ar.append(&mut header, "x".as_bytes()).unwrap();
+    let result = t!(ar.into_inner());
+    let mut ar = Archive::new(&result[..]);
+    let mut e = ar.entries().unwrap();
+    e.next().unwrap().unwrap();
+    let err = e.next().unwrap().err().unwrap();
+    assert!(
+        err.to_string().contains("size overflow"),
+        "bad error: {}",
+        err
+    );
+}
diff --git a/vendor/tar-0.4.38/tests/entry.rs b/vendor/tar-0.4.38/tests/entry.rs
new file mode 100644
index 000000000..fa8eeaee7
--- /dev/null
+++ b/vendor/tar-0.4.38/tests/entry.rs
@@ -0,0 +1,379 @@
+extern crate tar;
+extern crate tempfile;
+
+use std::fs::{create_dir, File};
+use std::io::Read;
+
+use tempfile::Builder;
+
+macro_rules! t {
+    ($e:expr) => {
+        match $e {
+            Ok(v) => v,
+            Err(e) => panic!("{} returned {}", stringify!($e), e),
+        }
+    };
+}
+
+#[test]
+fn absolute_symlink() {
+    let mut ar = tar::Builder::new(Vec::new());
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Symlink);
+    t!(header.set_path("foo"));
+    t!(header.set_link_name("/bar"));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let bytes = t!(ar.into_inner());
+    let mut ar = tar::Archive::new(&bytes[..]);
+
+    let td = t!(Builder::new().prefix("tar").tempdir());
+    t!(ar.unpack(td.path()));
+
+    t!(td.path().join("foo").symlink_metadata());
+
+    let mut ar = tar::Archive::new(&bytes[..]);
+    let mut entries = t!(ar.entries());
+    let entry = t!(entries.next().unwrap());
+    assert_eq!(&*entry.link_name_bytes().unwrap(), b"/bar");
+}
+
+#[test]
+fn absolute_hardlink() {
+    let td = t!(Builder::new().prefix("tar").tempdir());
+    let mut ar = tar::Builder::new(Vec::new());
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Regular);
+    t!(header.set_path("foo"));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Link);
+    t!(header.set_path("bar"));
+    // This absolute path under tempdir will be created at unpack time
+    t!(header.set_link_name(td.path().join("foo")));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let bytes = t!(ar.into_inner());
+    let mut ar = tar::Archive::new(&bytes[..]);
+
+    t!(ar.unpack(td.path()));
+    t!(td.path().join("foo").metadata());
+    t!(td.path().join("bar").metadata());
+}
+
+#[test]
+fn relative_hardlink() {
+    let mut ar = tar::Builder::new(Vec::new());
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Regular);
+    t!(header.set_path("foo"));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Link);
+    t!(header.set_path("bar"));
+    t!(header.set_link_name("foo"));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let bytes = t!(ar.into_inner());
+    let mut ar = tar::Archive::new(&bytes[..]);
+
+    let td = t!(Builder::new().prefix("tar").tempdir());
+    t!(ar.unpack(td.path()));
+    t!(td.path().join("foo").metadata());
+    t!(td.path().join("bar").metadata());
+}
+
+#[test]
+fn absolute_link_deref_error() {
+    let mut ar = tar::Builder::new(Vec::new());
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Symlink);
+    t!(header.set_path("foo"));
+    t!(header.set_link_name("/"));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Regular);
+    t!(header.set_path("foo/bar"));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let bytes = t!(ar.into_inner());
+    let mut ar = tar::Archive::new(&bytes[..]);
+
+    let td = t!(Builder::new().prefix("tar").tempdir());
+    assert!(ar.unpack(td.path()).is_err());
+    t!(td.path().join("foo").symlink_metadata());
+    assert!(File::open(td.path().join("foo").join("bar")).is_err());
+}
+
+#[test]
+fn relative_link_deref_error() {
+    let mut ar = tar::Builder::new(Vec::new());
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Symlink);
+    t!(header.set_path("foo"));
+    t!(header.set_link_name("../../../../"));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Regular);
+    t!(header.set_path("foo/bar"));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let bytes = t!(ar.into_inner());
+    let mut ar = tar::Archive::new(&bytes[..]);
+
+    let td = t!(Builder::new().prefix("tar").tempdir());
+    assert!(ar.unpack(td.path()).is_err());
+    t!(td.path().join("foo").symlink_metadata());
+    assert!(File::open(td.path().join("foo").join("bar")).is_err());
+}
+
+#[test]
+#[cfg(unix)]
+fn directory_maintains_permissions() {
+    use ::std::os::unix::fs::PermissionsExt;
+
+    let mut ar = tar::Builder::new(Vec::new());
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Directory);
+    t!(header.set_path("foo"));
+    header.set_mode(0o777);
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let bytes = t!(ar.into_inner());
+    let mut ar = tar::Archive::new(&bytes[..]);
+
+    let td = t!(Builder::new().prefix("tar").tempdir());
+    t!(ar.unpack(td.path()));
+    let f = t!(File::open(td.path().join("foo")));
+    let md = t!(f.metadata());
+    assert!(md.is_dir());
+    assert_eq!(md.permissions().mode(), 0o40777);
+}
+
+#[test]
+#[cfg(not(windows))] // dangling symlinks have weird permissions
+fn modify_link_just_created() {
+    let mut ar = tar::Builder::new(Vec::new());
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Symlink);
+    t!(header.set_path("foo"));
+    t!(header.set_link_name("bar"));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Regular);
+    t!(header.set_path("bar/foo"));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Regular);
+    t!(header.set_path("foo/bar"));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let bytes = t!(ar.into_inner());
+    let mut ar = tar::Archive::new(&bytes[..]);
+
+    let td = t!(Builder::new().prefix("tar").tempdir());
+    t!(ar.unpack(td.path()));
+
+    t!(File::open(td.path().join("bar/foo")));
+    t!(File::open(td.path().join("bar/bar")));
+    t!(File::open(td.path().join("foo/foo")));
+    t!(File::open(td.path().join("foo/bar")));
+}
+
+#[test]
+#[cfg(not(windows))] // dangling symlinks have weird permissions
+fn modify_outside_with_relative_symlink() {
+    let mut ar = tar::Builder::new(Vec::new());
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Symlink);
+    t!(header.set_path("symlink"));
+    t!(header.set_link_name(".."));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Regular);
+    t!(header.set_path("symlink/foo/bar"));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let bytes = t!(ar.into_inner());
+    let mut ar = tar::Archive::new(&bytes[..]);
+
+    let td = t!(Builder::new().prefix("tar").tempdir());
+    let tar_dir = td.path().join("tar");
+    create_dir(&tar_dir).unwrap();
+    assert!(ar.unpack(tar_dir).is_err());
+    assert!(!td.path().join("foo").exists());
+}
+
+#[test]
+fn parent_paths_error() {
+    let mut ar = tar::Builder::new(Vec::new());
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Symlink);
+    t!(header.set_path("foo"));
+    t!(header.set_link_name(".."));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Regular);
+    t!(header.set_path("foo/bar"));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let bytes = t!(ar.into_inner());
+    let mut ar = tar::Archive::new(&bytes[..]);
+
+    let td = t!(Builder::new().prefix("tar").tempdir());
+    assert!(ar.unpack(td.path()).is_err());
+    t!(td.path().join("foo").symlink_metadata());
+    assert!(File::open(td.path().join("foo").join("bar")).is_err());
+}
+
+#[test]
+#[cfg(unix)]
+fn good_parent_paths_ok() {
+    use std::path::PathBuf;
+    let mut ar = tar::Builder::new(Vec::new());
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Symlink);
+    t!(header.set_path(PathBuf::from("foo").join("bar")));
+    t!(header.set_link_name(PathBuf::from("..").join("bar")));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Regular);
+    t!(header.set_path("bar"));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let bytes = t!(ar.into_inner());
+    let mut ar = tar::Archive::new(&bytes[..]);
+
+    let td = t!(Builder::new().prefix("tar").tempdir());
+    t!(ar.unpack(td.path()));
+    t!(td.path().join("foo").join("bar").read_link());
+    let dst = t!(td.path().join("foo").join("bar").canonicalize());
+    t!(File::open(dst));
+}
+
+#[test]
+fn modify_hard_link_just_created() {
+    let mut ar = tar::Builder::new(Vec::new());
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Link);
+    t!(header.set_path("foo"));
+    t!(header.set_link_name("../test"));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(1);
+    header.set_entry_type(tar::EntryType::Regular);
+    t!(header.set_path("foo"));
+    header.set_cksum();
+    t!(ar.append(&header, &b"x"[..]));
+
+    let bytes = t!(ar.into_inner());
+    let mut ar = tar::Archive::new(&bytes[..]);
+
+    let td = t!(Builder::new().prefix("tar").tempdir());
+
+    let test = td.path().join("test");
+    t!(File::create(&test));
+
+    let dir = td.path().join("dir");
+    assert!(ar.unpack(&dir).is_err());
+
+    let mut contents = Vec::new();
+    t!(t!(File::open(&test)).read_to_end(&mut contents));
+    assert_eq!(contents.len(), 0);
+}
+
+#[test]
+fn modify_symlink_just_created() {
+    let mut ar = tar::Builder::new(Vec::new());
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(0);
+    header.set_entry_type(tar::EntryType::Symlink);
+    t!(header.set_path("foo"));
+    t!(header.set_link_name("../test"));
+    header.set_cksum();
+    t!(ar.append(&header, &[][..]));
+
+    let mut header = tar::Header::new_gnu();
+    header.set_size(1);
+    header.set_entry_type(tar::EntryType::Regular);
+    t!(header.set_path("foo"));
+    header.set_cksum();
+    t!(ar.append(&header, &b"x"[..]));
+
+    let bytes = t!(ar.into_inner());
+    let mut ar = tar::Archive::new(&bytes[..]);
+
+    let td = t!(Builder::new().prefix("tar").tempdir());
+
+    let test = td.path().join("test");
+    t!(File::create(&test));
+
+    let dir = td.path().join("dir");
+    t!(ar.unpack(&dir));
+
+    let mut contents = Vec::new();
+    t!(t!(File::open(&test)).read_to_end(&mut contents));
+    assert_eq!(contents.len(), 0);
+}
diff --git a/vendor/tar-0.4.38/tests/header/mod.rs b/vendor/tar-0.4.38/tests/header/mod.rs
new file mode 100644
index 000000000..86692e337
--- /dev/null
+++ b/vendor/tar-0.4.38/tests/header/mod.rs
@@ -0,0 +1,246 @@
+use std::fs::{self, File};
+use std::io::{self, Write};
+use std::path::Path;
+use std::{iter, mem, thread, time};
+
+use tempfile::Builder;
+
+use tar::{GnuHeader, Header, HeaderMode};
+
+#[test]
+fn default_gnu() {
+    let mut h = Header::new_gnu();
+    assert!(h.as_gnu().is_some());
+    assert!(h.as_gnu_mut().is_some());
+    assert!(h.as_ustar().is_none());
+    assert!(h.as_ustar_mut().is_none());
+}
+
+#[test]
+fn goto_old() {
+    let mut h = Header::new_old();
+    assert!(h.as_gnu().is_none());
+    assert!(h.as_gnu_mut().is_none());
+    assert!(h.as_ustar().is_none());
+    assert!(h.as_ustar_mut().is_none());
+}
+
+#[test]
+fn goto_ustar() {
+    let mut h = Header::new_ustar();
+    assert!(h.as_gnu().is_none());
+    assert!(h.as_gnu_mut().is_none());
+    assert!(h.as_ustar().is_some());
+    assert!(h.as_ustar_mut().is_some());
+}
+
+#[test]
+fn link_name() {
+    let mut h = Header::new_gnu();
+    t!(h.set_link_name("foo"));
+    assert_eq!(t!(h.link_name()).unwrap().to_str(), Some("foo"));
+    t!(h.set_link_name("../foo"));
+    assert_eq!(t!(h.link_name()).unwrap().to_str(), Some("../foo"));
+    t!(h.set_link_name("foo/bar"));
+    assert_eq!(t!(h.link_name()).unwrap().to_str(), Some("foo/bar"));
+    t!(h.set_link_name("foo\\ba"));
+    if cfg!(windows) {
+        assert_eq!(t!(h.link_name()).unwrap().to_str(), Some("foo/ba"));
+    } else {
+        assert_eq!(t!(h.link_name()).unwrap().to_str(), Some("foo\\ba"));
+    }
+
+    let name = "foo\\bar\0";
+    for (slot, val) in h.as_old_mut().linkname.iter_mut().zip(name.as_bytes()) {
+        *slot = *val;
+    }
+    assert_eq!(t!(h.link_name()).unwrap().to_str(), Some("foo\\bar"));
+
+    assert!(h.set_link_name("\0").is_err());
+}
+
+#[test]
+fn mtime() {
+    let h = Header::new_gnu();
+    assert_eq!(t!(h.mtime()), 0);
+
+    let h = Header::new_ustar();
+    assert_eq!(t!(h.mtime()), 0);
+
+    let h = Header::new_old();
+    assert_eq!(t!(h.mtime()), 0);
+}
+
+#[test]
+fn user_and_group_name() {
+    let mut h = Header::new_gnu();
+    t!(h.set_username("foo"));
+    t!(h.set_groupname("bar"));
+    assert_eq!(t!(h.username()), Some("foo"));
+    assert_eq!(t!(h.groupname()), Some("bar"));
+
+    h = Header::new_ustar();
+    t!(h.set_username("foo"));
+    t!(h.set_groupname("bar"));
+    assert_eq!(t!(h.username()), Some("foo"));
+    assert_eq!(t!(h.groupname()), Some("bar"));
+
+    h = Header::new_old();
+    assert_eq!(t!(h.username()), None);
+    assert_eq!(t!(h.groupname()), None);
+    assert!(h.set_username("foo").is_err());
+    assert!(h.set_groupname("foo").is_err());
+}
+
+#[test]
+fn dev_major_minor() {
+    let mut h = Header::new_gnu();
+    t!(h.set_device_major(1));
+    t!(h.set_device_minor(2));
+    assert_eq!(t!(h.device_major()), Some(1));
+    assert_eq!(t!(h.device_minor()), Some(2));
+
+    h = Header::new_ustar();
+    t!(h.set_device_major(1));
+    t!(h.set_device_minor(2));
+    assert_eq!(t!(h.device_major()), Some(1));
+    assert_eq!(t!(h.device_minor()), Some(2));
+
+    h.as_ustar_mut().unwrap().dev_minor[0] = 0x7f;
+    h.as_ustar_mut().unwrap().dev_major[0] = 0x7f;
+    assert!(h.device_major().is_err());
+    assert!(h.device_minor().is_err());
+
+    h.as_ustar_mut().unwrap().dev_minor[0] = b'g';
+    h.as_ustar_mut().unwrap().dev_major[0] = b'h';
+    assert!(h.device_major().is_err());
+    assert!(h.device_minor().is_err());
+
+    h = Header::new_old();
+    assert_eq!(t!(h.device_major()), None);
+    assert_eq!(t!(h.device_minor()), None);
+    assert!(h.set_device_major(1).is_err());
+    assert!(h.set_device_minor(1).is_err());
+}
+
+#[test]
+fn set_path() {
+    let mut h = Header::new_gnu();
+    t!(h.set_path("foo"));
+    assert_eq!(t!(h.path()).to_str(), Some("foo"));
+    t!(h.set_path("foo/"));
+    assert_eq!(t!(h.path()).to_str(), Some("foo/"));
+    t!(h.set_path("foo/bar"));
+    assert_eq!(t!(h.path()).to_str(), Some("foo/bar"));
+    t!(h.set_path("foo\\bar"));
+    if cfg!(windows) {
+        assert_eq!(t!(h.path()).to_str(), Some("foo/bar"));
+    } else {
+        assert_eq!(t!(h.path()).to_str(), Some("foo\\bar"));
+    }
+
+    // set_path documentation explictly states it removes any ".", signfying the
+    // current directory, from the path. This test ensures that documented
+    // beavhior occurs
+    t!(h.set_path("./control"));
+    assert_eq!(t!(h.path()).to_str(), Some("control"));
+
+    let long_name = iter::repeat("foo").take(100).collect::<String>();
+    let medium1 = iter::repeat("foo").take(52).collect::<String>();
+    let medium2 = iter::repeat("fo/").take(52).collect::<String>();
+
+    assert!(h.set_path(&long_name).is_err());
+    assert!(h.set_path(&medium1).is_err());
+    assert!(h.set_path(&medium2).is_err());
+    assert!(h.set_path("\0").is_err());
+
+    assert!(h.set_path("..").is_err());
+    assert!(h.set_path("foo/..").is_err());
+    assert!(h.set_path("foo/../bar").is_err());
+
+    h = Header::new_ustar();
+    t!(h.set_path("foo"));
+    assert_eq!(t!(h.path()).to_str(), Some("foo"));
+
+    assert!(h.set_path(&long_name).is_err());
+    assert!(h.set_path(&medium1).is_err());
+    t!(h.set_path(&medium2));
+    assert_eq!(t!(h.path()).to_str(), Some(&medium2[..]));
+}
+
+#[test]
+fn set_ustar_path_hard() {
+    let mut h = Header::new_ustar();
+    let p = Path::new("a").join(&vec!["a"; 100].join(""));
+    t!(h.set_path(&p));
+    assert_eq!(t!(h.path()), p);
+}
+
+#[test]
+fn set_metadata_deterministic() {
+    let td = t!(Builder::new().prefix("tar-rs").tempdir());
+    let tmppath = td.path().join("tmpfile");
+
+    fn mk_header(path: &Path, readonly: bool) -> Result<Header, io::Error> {
+        let mut file = t!(File::create(path));
+        t!(file.write_all(b"c"));
+        let mut perms = t!(file.metadata()).permissions();
+        perms.set_readonly(readonly);
+        t!(fs::set_permissions(path, perms));
+        let mut h = Header::new_ustar();
+        h.set_metadata_in_mode(&t!(path.metadata()), HeaderMode::Deterministic);
+        Ok(h)
+    }
+
+    // Create "the same" File twice in a row, one second apart, with differing readonly values.
+    let one = t!(mk_header(tmppath.as_path(), false));
+    thread::sleep(time::Duration::from_millis(1050));
+    let two = t!(mk_header(tmppath.as_path(), true));
+
+    // Always expected to match.
+    assert_eq!(t!(one.size()), t!(two.size()));
+    assert_eq!(t!(one.path()), t!(two.path()));
+    assert_eq!(t!(one.mode()), t!(two.mode()));
+
+    // Would not match without `Deterministic`.
+    assert_eq!(t!(one.mtime()), t!(two.mtime()));
+    // TODO: No great way to validate that these would not be filled, but
+    // check them anyway.
+    assert_eq!(t!(one.uid()), t!(two.uid()));
+    assert_eq!(t!(one.gid()), t!(two.gid()));
+}
+
+#[test]
+fn extended_numeric_format() {
+    let mut h: GnuHeader = unsafe { mem::zeroed() };
+    h.as_header_mut().set_size(42);
+    assert_eq!(h.size, [48, 48, 48, 48, 48, 48, 48, 48, 48, 53, 50, 0]);
+    h.as_header_mut().set_size(8589934593);
+    assert_eq!(h.size, [0x80, 0, 0, 0, 0, 0, 0, 0x02, 0, 0, 0, 1]);
+    h.size = [0x80, 0, 0, 0, 0, 0, 0, 0x02, 0, 0, 0, 0];
+    assert_eq!(h.as_header().entry_size().unwrap(), 0x0200000000);
+    h.size = [48, 48, 48, 48, 48, 48, 48, 48, 48, 53, 51, 0];
+    assert_eq!(h.as_header().entry_size().unwrap(), 43);
+
+    h.as_header_mut().set_gid(42);
+    assert_eq!(h.gid, [48, 48, 48, 48, 48, 53, 50, 0]);
+    assert_eq!(h.as_header().gid().unwrap(), 42);
+    h.as_header_mut().set_gid(0x7fffffffffffffff);
+    assert_eq!(h.gid, [0xff; 8]);
+    assert_eq!(h.as_header().gid().unwrap(), 0x7fffffffffffffff);
+    h.uid = [0x80, 0x00, 0x00, 0x00, 0x12, 0x34, 0x56, 0x78];
+    assert_eq!(h.as_header().uid().unwrap(), 0x12345678);
+
+    h.mtime = [
+        0x80, 0, 0, 0, 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef,
+    ];
+    assert_eq!(h.as_header().mtime().unwrap(), 0x0123456789abcdef);
+}
+
+#[test]
+fn byte_slice_conversion() {
+    let h = Header::new_gnu();
+    let b: &[u8] = h.as_bytes();
+    let b_conv: &[u8] = Header::from_byte_slice(h.as_bytes()).as_bytes();
+    assert_eq!(b, b_conv);
+}