35 lines · cpp
1//===-- Linux implementation of sigprocmask -------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/signal/sigprocmask.h"10 11#include "hdr/types/sigset_t.h"12#include "src/__support/OSUtil/syscall.h" // For internal syscall function.13#include "src/__support/common.h"14#include "src/__support/libc_errno.h"15#include "src/__support/macros/config.h"16#include "src/signal/linux/signal_utils.h"17 18#include <sys/syscall.h> // For syscall numbers.19 20namespace LIBC_NAMESPACE_DECL {21 22LLVM_LIBC_FUNCTION(int, sigprocmask,23 (int how, const sigset_t *__restrict set,24 sigset_t *__restrict oldset)) {25 int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_rt_sigprocmask, how, set,26 oldset, sizeof(sigset_t));27 if (!ret)28 return 0;29 30 libc_errno = -ret;31 return -1;32}33 34} // namespace LIBC_NAMESPACE_DECL35