1ee17fd7dSMichael Jones //===-- Linux implementation of socket ------------------------------------===// 2ee17fd7dSMichael Jones // 3ee17fd7dSMichael Jones // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4ee17fd7dSMichael Jones // See https://llvm.org/LICENSE.txt for license information. 5ee17fd7dSMichael Jones // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6ee17fd7dSMichael Jones // 7ee17fd7dSMichael Jones //===----------------------------------------------------------------------===// 8ee17fd7dSMichael Jones 9ee17fd7dSMichael Jones #include "src/sys/socket/socket.h" 10ee17fd7dSMichael Jones 11ee17fd7dSMichael Jones #include "src/__support/OSUtil/syscall.h" // For internal syscall function. 12ee17fd7dSMichael Jones #include "src/__support/common.h" 13ee17fd7dSMichael Jones 14*5ff3ff33SPetr Hosek #include "src/__support/macros/config.h" 15ee17fd7dSMichael Jones #include "src/errno/libc_errno.h" 16ee17fd7dSMichael Jones 17ee17fd7dSMichael Jones #include <linux/net.h> // For SYS_SOCKET socketcall number. 18ee17fd7dSMichael Jones #include <sys/syscall.h> // For syscall numbers. 19ee17fd7dSMichael Jones 20*5ff3ff33SPetr Hosek namespace LIBC_NAMESPACE_DECL { 21ee17fd7dSMichael Jones 22ee17fd7dSMichael Jones LLVM_LIBC_FUNCTION(int, socket, (int domain, int type, int protocol)) { 23ee17fd7dSMichael Jones #ifdef SYS_socket 24b6bc9d72SGuillaume Chatelet int ret = 25b6bc9d72SGuillaume Chatelet LIBC_NAMESPACE::syscall_impl<int>(SYS_socket, domain, type, protocol); 26ee17fd7dSMichael Jones #elif defined(SYS_socketcall) 278180ea86Smichaelrj-google unsigned long sockcall_args[3] = {static_cast<unsigned long>(domain), 288180ea86Smichaelrj-google static_cast<unsigned long>(type), 298180ea86Smichaelrj-google static_cast<unsigned long>(protocol)}; 30b6bc9d72SGuillaume Chatelet int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_socketcall, SYS_SOCKET, 31b6bc9d72SGuillaume Chatelet sockcall_args); 32ee17fd7dSMichael Jones #else 33ee17fd7dSMichael Jones #error "socket and socketcall syscalls unavailable for this platform." 34ee17fd7dSMichael Jones #endif 35ee17fd7dSMichael Jones if (ret < 0) { 36ee17fd7dSMichael Jones libc_errno = -ret; 37ee17fd7dSMichael Jones return -1; 38ee17fd7dSMichael Jones } 39ee17fd7dSMichael Jones return ret; 40ee17fd7dSMichael Jones } 41ee17fd7dSMichael Jones 42*5ff3ff33SPetr Hosek } // namespace LIBC_NAMESPACE_DECL 43