From a64e3aadbf99dd99baab4b3b650eb6be68b3a4aa Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Thu, 17 Mar 2016 19:07:39 +0000 Subject: Remove __ASSUME_EVENTFD2, move eventfd to syscalls.list. Given current Linux kernel version requirements, we can assume the presence of the eventfd2 syscall. This means that __ASSUME_EVENTFD2 can be removed, and a syscalls.list entry suffices for eventfd instead of needing a .c file. This patch implements those changes. Tested for x86_64 and x86 (not that that means much, given the lack of testsuite coverage for eventfd). * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_EVENTFD2): Remove macro. * sysdeps/unix/sysv/linux/eventfd.c: Remove file. * sysdeps/unix/sysv/linux/syscalls.list (eventfd): New syscall entry. --- sysdeps/unix/sysv/linux/eventfd.c | 51 --------------------------------------- 1 file changed, 51 deletions(-) delete mode 100644 sysdeps/unix/sysv/linux/eventfd.c (limited to 'sysdeps/unix/sysv/linux/eventfd.c') diff --git a/sysdeps/unix/sysv/linux/eventfd.c b/sysdeps/unix/sysv/linux/eventfd.c deleted file mode 100644 index ba193ba65e..0000000000 --- a/sysdeps/unix/sysv/linux/eventfd.c +++ /dev/null @@ -1,51 +0,0 @@ -/* Copyright (C) 2007-2016 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 - . */ - -#include -#include -#include -#include - - -int -eventfd (unsigned int count, int flags) -{ -#ifdef __NR_eventfd2 - int res = INLINE_SYSCALL (eventfd2, 2, count, flags); -# ifndef __ASSUME_EVENTFD2 - if (res != -1 || errno != ENOSYS) -# endif - return res; -#endif - -#ifndef __ASSUME_EVENTFD2 - /* The old system call has no flag parameter which is bad. So we have - to wait until we have to support to pass additional values to the - kernel (sys_indirect) before implementing setting flags like - O_NONBLOCK etc. */ - if (flags != 0) - return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); - -# ifdef __NR_eventfd - return INLINE_SYSCALL (eventfd, 1, count); -# else - return INLINE_SYSCALL_ERROR_RETURN_VALUE (ENOSYS); -# endif -#elif !defined __NR_eventfd2 -# error "__ASSUME_EVENTFD2 defined but not __NR_eventfd2" -#endif -} -- cgit v1.2.3-70-g09d2