vendor/libarchive

1 files changed, 82 insertions, 0 deletions

diff --git a/libarchive/test/test_write_format_tar_empty_dirname.c b/libarchive/test/test_write_format_tar_empty_dirname.c
new file mode 100644
index 000000000000..7536078799f1
--- /dev/null
+++ b/libarchive/test/test_write_format_tar_empty_dirname.c
@@ -0,0 +1,82 @@
+/*-
+ * Copyright (c) 2026 Tobias Stoeckmann
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "test.h"
+
+static void
+test_format(int (*set_format)(struct archive *))
+{
+	struct archive *a;
+	struct archive_entry *entry;
+	char buff[2048];
+	size_t used;
+
+	/* Create a new archive in memory. */
+	assert((a = archive_write_new()) != NULL);
+	assertA(0 == set_format(a));
+	assertA(0 == archive_write_add_filter_none(a));
+	assertA(0 == archive_write_set_bytes_per_block(a, 512));
+	assertA(0 == archive_write_set_bytes_in_last_block(a, 512));
+	assertA(0 == archive_write_open_memory(a, buff, sizeof(buff), &used));
+
+	/* Write directory with empty wide character name */
+	assert((entry = archive_entry_new()) != NULL);
+	archive_entry_copy_pathname_w(entry, L"");
+	archive_entry_set_mode(entry, S_IFDIR | 0755);
+	archive_entry_set_uid(entry, 0);
+	archive_entry_set_gid(entry, 0);
+	assertEqualIntA(a, ARCHIVE_OK, archive_write_header(a, entry));
+
+	/* Close out the archive. */
+	archive_entry_free(entry);
+	assertEqualIntA(a, ARCHIVE_OK, archive_write_close(a));
+	assertEqualInt(ARCHIVE_OK, archive_write_free(a));
+
+	/*
+	 * Now, read the data back.
+	 */
+	assert((a = archive_read_new()) != NULL);
+	assertEqualIntA(a, ARCHIVE_OK, archive_read_support_format_all(a));
+	assertEqualIntA(a, ARCHIVE_OK, archive_read_support_filter_all(a));
+	assertEqualIntA(a, ARCHIVE_OK,
+	    archive_read_open_memory(a, buff, used));
+	assertEqualIntA(a, ARCHIVE_OK,
+	    archive_read_next_header(a, &entry));
+	assertEqualString("", archive_entry_pathname(entry));
+
+	/* Verify the end of the archive. */
+	assertEqualIntA(a, ARCHIVE_EOF,
+	    archive_read_next_header(a, &entry));
+	assertEqualIntA(a, ARCHIVE_OK, archive_read_close(a));
+	assertEqualInt(ARCHIVE_OK, archive_read_free(a));
+
+}
+
+DEFINE_TEST(test_write_format_tar_empty_dirname)
+{
+	test_format(archive_write_set_format_gnutar);
+	test_format(archive_write_set_format_pax);
+	test_format(archive_write_set_format_ustar);
+	test_format(archive_write_set_format_v7tar);
+}