Consolidate Linux creat implementation

This patch consolidates the creat Linux syscall implementation on
sysdeps/unix/sysv/linux/creat{64}.c.  The changes are:

  1. Remove creat{64} from auto-generation syscalls.list.
  2. Add a new creat{64}.c implementation.  For architectures that
     define __OFF_T_MATCHES_OFF64_T the default creat64 will create
     alias to required creat symbols.
  3. Use __NR_creat where possible, otherwise use internal open{64}
     call with expected flags.

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.

	* io/Makefile (CFLAGS-creat.c): New rule.
	(CFLAGS-creat64.c): Likewise.
	* sysdeps/unix/sysv/linux/alpha/creat.c: Remove file.
	* sysdeps/unix/sysv/linux/generic/creat.c: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/creat64.c: Likewise.
	* sysdeps/unix/sysv/linux/creat.c: New file.
	* sysdeps/unix/sysv/linux/creat64.c: Likewise.
	* sysdeps/unix/sysv/linux/syscalls.list: Remove create from
	auto-generated list.
	* sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: Likewise.

1 files changed, 0 insertions, 37 deletions

diff --git a/sysdeps/unix/sysv/linux/generic/creat.c b/sysdeps/unix/sysv/linux/generic/creat.c
deleted file mode 100644
index 34cb210e77..0000000000
--- a/sysdeps/unix/sysv/linux/generic/creat.c
+++ /dev/null
@@ -1,37 +0,0 @@
-/* Copyright (C) 2011-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
-
-   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/>.  */
-
-#include <fcntl.h>
-#include <sys/types.h>
-#include <sysdep-cancel.h>
-
-#undef	creat
-
-/* Create FILE with protections MODE.  */
-int
-creat (const char *file, mode_t mode)
-{
-  return __open (file, O_WRONLY | O_CREAT | O_TRUNC, mode);
-}
-
-/* __open handles cancellation.  */
-LIBC_CANCEL_HANDLED ();
-
-#if __WORDSIZE == 64
-weak_alias (creat, creat64)
-#endif