//===---------- Linux implementation of the epoll_create function ---------===// // // 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/epoll/epoll_create.h" #include "src/__support/OSUtil/syscall.h" // For internal syscall function. #include "src/__support/common.h" #include "src/__support/macros/config.h" #include "src/errno/libc_errno.h" #include // For syscall numbers. namespace LIBC_NAMESPACE_DECL { LLVM_LIBC_FUNCTION(int, epoll_create, ([[maybe_unused]] int size)) { #ifdef SYS_epoll_create int ret = LIBC_NAMESPACE::syscall_impl(SYS_epoll_create, size); #elif defined(SYS_epoll_create1) int ret = LIBC_NAMESPACE::syscall_impl(SYS_epoll_create1, 0); #else #error \ "epoll_create and epoll_create1 are unavailable. Unable to build epoll_create." #endif // A negative return value indicates an error with the magnitude of the // value being the error code. if (ret < 0) { libc_errno = -ret; return -1; } return ret; } } // namespace LIBC_NAMESPACE_DECL