29 lines · cpp
1//===---------- Linux implementation of the munlock function --------------===//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/sys/mman/munlock.h"10 11#include "src/__support/OSUtil/syscall.h" // For internal syscall function.12 13#include "src/__support/libc_errno.h"14#include "src/__support/macros/config.h"15#include <sys/syscall.h> // For syscall numbers.16 17namespace LIBC_NAMESPACE_DECL {18 19LLVM_LIBC_FUNCTION(int, munlock, (const void *addr, size_t len)) {20 long ret = syscall_impl(SYS_munlock, cpp::bit_cast<long>(addr), len);21 if (ret < 0) {22 libc_errno = static_cast<int>(-ret);23 return -1;24 }25 return 0;26}27 28} // namespace LIBC_NAMESPACE_DECL29