mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-27 07:20:11 +00:00
b41152d716
This patch consolidates the open Linux syscall implementation on
sysdeps/unix/sysv/linux/open{64}.c. The changes are:
1. Remove open{64} from auto-generation syscalls.list.
2. Add a new open{64}.c implementation. For architectures that
define __OFF_T_MATCHES_OFF64_T the default open64 will create
alias to required open symbols.
3. Use __NR_openat as default syscall for open{64}.
Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.
* sysdeps/unix/sysv/linux/generic/open.c: Remove file.
* sysdeps/unix/sysv/linux/generic/open64.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/open64.c: Likewise.
* sysdeps/unix/sysv/linux/open.c: New file.
* sysdeps/unix/sysv/linux/open64.c (__libc_open64): Use O_LARGEFILE
only for __OFF_T_MATCHES_OFF64_T and add alias to open if the case.
* sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: Remove open
from auto-generated list.
60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/* Copyright (C) 1991-2017 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 <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <stdarg.h>
|
|
|
|
#include <sysdep-cancel.h>
|
|
|
|
/* Open FILE with access OFLAG. If O_CREAT or O_TMPFILE is in OFLAG,
|
|
a third argument is the file protection. */
|
|
int
|
|
__libc_open64 (const char *file, int oflag, ...)
|
|
{
|
|
int mode = 0;
|
|
|
|
if (__OPEN_NEEDS_MODE (oflag))
|
|
{
|
|
va_list arg;
|
|
va_start (arg, oflag);
|
|
mode = va_arg (arg, int);
|
|
va_end (arg);
|
|
}
|
|
|
|
#ifdef __OFF_T_MATCHES_OFF64_T
|
|
# define EXTRA_OPEN_FLAGS 0
|
|
#else
|
|
# define EXTRA_OPEN_FLAGS O_LARGEFILE
|
|
#endif
|
|
|
|
return SYSCALL_CANCEL (openat, AT_FDCWD, file, oflag | EXTRA_OPEN_FLAGS,
|
|
mode);
|
|
}
|
|
|
|
strong_alias (__libc_open64, __open64)
|
|
libc_hidden_weak (__open64)
|
|
weak_alias (__libc_open64, open64)
|
|
|
|
#ifdef __OFF_T_MATCHES_OFF64_T
|
|
strong_alias (__libc_open64, __libc_open)
|
|
strong_alias (__libc_open64, __open)
|
|
libc_hidden_weak (__open)
|
|
weak_alias (__libc_open64, open)
|
|
#endif
|