glibc/sysdeps/unix/sysv/linux/accept.c

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/* Copyright (C) 2015-2019 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/socket.h>
#include <sysdep-cancel.h>
#include <socketcall.h>
int
__libc_accept (int fd, __SOCKADDR_ARG addr, socklen_t *len)
{
#ifdef __ASSUME_ACCEPT_SYSCALL
return SYSCALL_CANCEL (accept, fd, addr.__sockaddr__, len);
Consolidate Linux accept implementation This patch consolidates the accept Linux syscall implementation on sysdeps/unix/sysv/linux/accept.c. The changes are: 1. Remove accept from auto-generation syscalls.list on the architecture that uses __NR_accept. 2. Define __NR_accept as default (__ASSUME_ACCEPT_SYSCALL) and undef for architectures that do not support it. 3. Remove __ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL and decide to use __NR_accept4 for accept generation based on __ASSUME_ACCEPT4_SYSCALL. Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32, aarch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu. * sysdeps/unix/sysv/linux/accept.c (__libc_accept): Replace __ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL by __ASSUME_ACCEPT4_SYSCALL. * sysdeps/unix/sysv/linux/alpha/syscalls.list: Remove accept from auto-generation list. * sysdeps/unix/sysv/linux/arm/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/generic/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/hppa/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/ia64/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/mips/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/x86_64/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/i386/kernel-features.h (__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Remove define. (__ASSUME_ACCEPT_SYSCALL): Undefine. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_ACCEPT_SYSCALL): New define. * sysdeps/unix/sysv/linux/m68k/kernel-features.h (__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Remove define. (__ASSUME_ACCEPT_SYSCALL): Define wheter kernel version supports. * sysdeps/unix/sysv/linux/microblaze/kernel-features.h (__ASSUME_ACCEPT_SYSCALL): Define. * sysdeps/unix/sysv/linux/powerpc/kernel-features.h (__ASSUME_ACCEPT_SYSCALL): Undefine. * sysdeps/unix/sysv/linux/s390/kernel-features.h (__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Remove define. (__ASSUME_ACCEPT_SYSCALL): Undefine. * sysdeps/unix/sysv/linux/sh/kernel-features.h (__ASSUME_ACCEPT_SYSCALL): Undefine. * sysdeps/unix/sysv/linux/sparc/kernel-features.h (__ASSUME_ACCEPT_SYSCALL): Undefine for 32 bits.
2016-11-18 04:13:44 +08:00
#elif defined __ASSUME_ACCEPT4_SYSCALL
return SYSCALL_CANCEL (accept4, fd, addr.__sockaddr__, len, 0);
#else
return SOCKETCALL_CANCEL (accept, fd, addr.__sockaddr__, len);
#endif
}
weak_alias (__libc_accept, accept)
libc_hidden_def (accept)