1 files changed, 47 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/tst-fallocate64.c b/sysdeps/unix/sysv/linux/tst-fallocate64.c
new file mode 100644
index 0000000000..e51fa0152a
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/tst-fallocate64.c
@@ -0,0 +1,47 @@
+/* Basic fallocate64 test (no specific flags is checked).
+   Copyright (C) 2016-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define _FILE_OFFSET_BITS 64
+#include "tst-fallocate-common.c"
+
+static int
+do_test (void)
+{
+  ssize_t ret;
+
+  ret = do_test_with_offset (0);
+  if (ret == 1)
+    return 1;
+
+  off_t base_offset = UINT32_MAX + 2048LL;
+  ret = do_test_with_offset (base_offset);
+  if (ret == 1)
+    return 1;
+
+  struct stat st;
+  if (fstat (temp_fd, &st) == -1)
+    FAIL_EXIT1 ("fstat on temporary file failed: %m");
+
+  /* The file size should >= base_offset plus bytes written.  */
+  off_t expected_value = base_offset + ret;
+  if (st.st_size < expected_value)
+    FAIL_EXIT1 ("file size less than expected (%jd > %jd)",
+		(intmax_t) expected_value, (intmax_t) st.st_size);
+
+  return 0;
+}