| //===-- Linux implementation of socket ------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "src/sys/socket/socket.h" |
| |
| #include "src/__support/OSUtil/syscall.h" // For internal syscall function. |
| #include "src/__support/common.h" |
| |
| #include "src/errno/libc_errno.h" |
| |
| #include <linux/net.h> // For SYS_SOCKET socketcall number. |
| #include <sys/syscall.h> // For syscall numbers. |
| |
| namespace LIBC_NAMESPACE { |
| |
| LLVM_LIBC_FUNCTION(int, socket, (int domain, int type, int protocol)) { |
| #ifdef SYS_socket |
| int ret = |
| LIBC_NAMESPACE::syscall_impl<int>(SYS_socket, domain, type, protocol); |
| #elif defined(SYS_socketcall) |
| unsigned long sockcall_args[3] = {static_cast<unsigned long>(domain), |
| static_cast<unsigned long>(type), |
| static_cast<unsigned long>(protocol)}; |
| int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_socketcall, SYS_SOCKET, |
| sockcall_args); |
| #else |
| #error "socket and socketcall syscalls unavailable for this platform." |
| #endif |
| if (ret < 0) { |
| libc_errno = -ret; |
| return -1; |
| } |
| return ret; |
| } |
| |
| } // namespace LIBC_NAMESPACE |