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posix: Consolidate Linux fsync syscall

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

For arm it also removes the __errno_location call since fsync
is not called with SYSCALL_CANCEL with call arch-specific
INLINE_SYSCALL macro which in turn will call __set_errno macro
(and setting errno directly).

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-fsync.c): New flag.
	* nptl/Makefile (CFLAGS-fsync.c): Likewise.
	* sysdeps/unix/syscalls.list (fsync): Remove from auto-generation
	syscall list.
	* sysdeps/unix/sysv/linux/fsync.c: New file.
	* sysdeps/unix/sysv/linux/arm/localplt.data [libpthread.so]
	(__errno_location): Remove.
This commit is contained in:
Adhemerval Zanella 2015-11-02 12:14:35 -02:00
parent 51209cbf51
commit fdbb0d98ba
6 changed files with 38 additions and 2 deletions
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8
ChangeLog
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@ -1,5 +1,13 @@
2017-05-18 Adhemerval Zanella <adhemerval.zanella@linaro.org>
* misc/Makefile (CFLAGS-fsync.c): New flag.
* nptl/Makefile (CFLAGS-fsync.c): Likewise.
* sysdeps/unix/syscalls.list (fsync): Remove from auto-generation
syscall list.
* sysdeps/unix/sysv/linux/fsync.c: New file.
* sysdeps/unix/sysv/linux/arm/localplt.data [libpthread.so]
(__errno_location): Remove.
* misc/Makefile (CFLAGS-fdatasync.c): New rule.
* nptl/Makefile (CFLAGS-fdatasync.c): Likewise.
* sysdeps/unix/syscalls.list: Remove fdatasync from auto-generation

1
misc/Makefile
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@ -110,6 +110,7 @@ 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
CFLAGS-fsync.c = -fexceptions -fasynchronous-unwind-tables
# Called during static library initialization, so turn stack-protection
# off for non-shared builds.

1
nptl/Makefile
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@ -220,6 +220,7 @@ 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-fsync.c = -fexceptions -fasynchronous-unwind-tables
CFLAGS-pt-system.c = -fexceptions

1
sysdeps/unix/syscalls.list
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@ -19,7 +19,6 @@ fchmod - fchmod i:ii __fchmod fchmod
fchown - fchown i:iii __fchown fchown
fcntl - fcntl Ci:iiF __libc_fcntl __fcntl fcntl
fstatfs - fstatfs i:ip __fstatfs fstatfs
fsync - fsync Ci:i __libc_fsync fsync
ftruncate - ftruncate i:ii __ftruncate ftruncate
getdomain - getdomainname i:si getdomainname
getgid - getgid Ei: __getgid getgid

1
sysdeps/unix/sysv/linux/arm/localplt.data
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@ -5,7 +5,6 @@ libc.so: memalign
libc.so: raise
libc.so: realloc
libm.so: matherr
libpthread.so: __errno_location
libpthread.so: raise
# The dynamic loader needs __tls_get_addr for TLS.
ld.so: __tls_get_addr

28
sysdeps/unix/sysv/linux/fsync.c Normal file
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@ -0,0 +1,28 @@
/* 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>
/* Make all changes done to FD actually appear on disk. */
int
fsync (int fd)
{
return SYSCALL_CANCEL (fsync, fd);
}