Consolidate posix_fallocate{64} implementations

This patch consolidates all the posix_fallocate{64} implementation for Linux
in only one (sysdeps/unix/sysv/linux/posix_fallocate{64}.c).  It also removes
the syscall from the auto-generation using assembly macros.

The macro SYSCALL_LL{64} is used to handle the offset argument along with
the new INTERNAL_SYSCALL_CALL macro to define correct argument count for
internal INTERNAL_SYSCALL call.

Tested on x86_64, i686, x32, aarch64, ppc64le, and armhf.

	* io/Makefile (tests): Add tst-posix_fallocate and
	tst-posix_fallocate64.
	* io/tst-posix_fallocate-common.c: New file.
	* io/tst-posix_fallocate.c: Likewise.
	* io/tst-posix_fallocate64.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/posix_fallocate.c: Remove
	file.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/posix_fallocate64.c:
	Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/posix_fallocate.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/posix_fallocate64.c:
	Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/posix_fallocate.c: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/posix_fallocate64.c: Likewise.
	* sysdeps/unix/sysv/linux/posix_fallocate.c (posix_fallocate): Use
	SYSCALL_LL to pass both offset and len arguments.
	* sysdeps/unix/sysv/linux/posix_fallocate64.c (posix_fallocate64):
	Likewise.
	* sysdeps/unix/sysv/linux/x86_64/syscalls.list (pwrite64): Add
	__libc_pwrite64 alias used by posix_fallocate64.

1 files changed, 44 insertions, 0 deletions

diff --git a/io/tst-posix_fallocate64.c b/io/tst-posix_fallocate64.c
new file mode 100644
index 0000000000..0c2f66eb8c
--- /dev/null
+++ b/io/tst-posix_fallocate64.c
@@ -0,0 +1,44 @@
+/* Basic posix_fallocate tests (with _FILE_OFFSET_BITS).
+   Copyright (C) 2016 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-posix_fallocate-common.c"
+
+static int
+do_test (void)
+{
+  struct stat st;
+  int ret;
+
+  if (fstat (temp_fd, &st) != 0)
+    FAIL_EXIT1 ("1st fstat failed");
+
+  if (st.st_size != 0)
+    FAIL_EXIT1 ("file not created with size 0");
+
+  ret = do_test_with_offset (512);
+  if (ret == 1)
+    return 1;
+
+  off_t base_offset = UINT32_MAX + 512LL;
+  ret = do_test_with_offset (base_offset);
+  if (ret == 1)
+    return 1;
+
+  return 0;
+}