posix: Consolidate Linux fdatasync syscall

This patch consolidates the fdatasync Linux syscall generation on
sysdeps/unix/sysv/linux/fdatasync.c.  It basically removes it from
architectures auto-generation list.

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, powerpc64le-linux-gnu,
sparc64-linux-gnu, and sparcv9-linux-gnu.

	* misc/makefile (CFLAGS-datasync.c): New flag.
	* nptl/makefile (CFLAGS-datasync.c): Likewise.
	* sysdeps/unix/sysv/linux/syscalls.list (fdatasync): Remove from
	auto-generation syscall list.
	* sysdeps/unix/sysv/linux/fdatasync.c: New file.

diff --git a/ChangeLog b/ChangeLog
index caaf6050ae220682bca3c493faa63848664c522b..6e88eeffea3f5cf5e405ff9d7de078361db6af66 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2017-05-18  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
+       * misc/Makefile (CFLAGS-fdatasync.c): New rule.
+       * nptl/Makefile (CFLAGS-fdatasync.c): Likewise.
+       * sysdeps/unix/syscalls.list: Remove fdatasync from auto-generation
+       list.
+       * sysdeps/unix/sysv/linux/fdatasync.c: New file.
+
        * misc/Makefile (CFLAGS-msync.c): New rule.
        * nptl/Makefile (CFLAGS-msync.c): Likewise.
        * sysdeps/unix/syscalls.list: Remove msync from auto-generation list.

diff --git a/misc/Makefile b/misc/Makefile
index 0c1526a5926b0340fcdd313091fff1b18d351413..a777ece4a5a55e43a363a038894b03620005c1b9 100644 (file)
--- a/misc/Makefile
+++ b/misc/Makefile
@@ -109,6 +109,7 @@ CFLAGS-getusershell.c = -fexceptions
 CFLAGS-err.c = -fexceptions
 CFLAGS-tst-tsearch.c = $(stack-align-test-flags)
 CFLAGS-msync.c = -fexceptions -fasynchronous-unwind-tables
+CFLAGS-fdatasync.c = -fexceptions -fasynchronous-unwind-tables
 
 # Called during static library initialization, so turn stack-protection
 # off for non-shared builds.

diff --git a/nptl/Makefile b/nptl/Makefile
index 3ade74fa36c17accfcc369c16f85b2db5e080b8f..90eac7c7f2232b549287c79882e4439667459dc6 100644 (file)
--- a/nptl/Makefile
+++ b/nptl/Makefile
@@ -219,6 +219,7 @@ CFLAGS-write.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-nanosleep.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-sigsuspend.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-msync.c = -fexceptions -fasynchronous-unwind-tables
+CFLAGS-fdatasync.c = -fexceptions -fasynchronous-unwind-tables
 
 CFLAGS-pt-system.c = -fexceptions
 

diff --git a/sysdeps/unix/sysv/linux/fdatasync.c b/sysdeps/unix/sysv/linux/fdatasync.c
new file mode 100644 (file)
index 0000000..09a07fb
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/fdatasync.c
@@ -0,0 +1,29 @@
+/* Synchronize a file's in-core state with storage device Linux
+   implementation.
+   Copyright (C) 2017 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/>.  */
+
+#include <unistd.h>
+#include <sysdep-cancel.h>
+
+/* Synchronize at least the data part of a file with the underlying
+   media.  */
+int
+fdatasync (int fd)
+{
+  return SYSCALL_CANCEL (fdatasync, fd);
+}

diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
index ae99acdea2fc68ab76a1ca163a168d16f0a230eb..c69eff4432e1946563f2761ab781047a5601e238 100644 (file)
--- a/sysdeps/unix/sysv/linux/syscalls.list
+++ b/sysdeps/unix/sysv/linux/syscalls.list
@@ -13,7 +13,6 @@ epoll_create1 EXTRA   epoll_create1   i:i     epoll_create1
 epoll_ctl      EXTRA   epoll_ctl       i:iiip  epoll_ctl
 eventfd                EXTRA   eventfd2        i:ii    eventfd
 execve         -       execve          i:spp   __execve        execve
-fdatasync      -       fdatasync       Ci:i    fdatasync
 flock          -       flock           i:ii    __flock         flock
 get_kernel_syms        EXTRA   get_kernel_syms i:p     __compat_get_kernel_syms        get_kernel_syms@GLIBC_2.0:GLIBC_2.23
 getpid          -       getpid          Ei:     __getpid        getpid