1*71db0c75SAndroid Build Coastguard Worker //===---------- Linux implementation of the msync function ----------------===// 2*71db0c75SAndroid Build Coastguard Worker // 3*71db0c75SAndroid Build Coastguard Worker // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*71db0c75SAndroid Build Coastguard Worker // See https://llvm.org/LICENSE.txt for license information. 5*71db0c75SAndroid Build Coastguard Worker // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*71db0c75SAndroid Build Coastguard Worker // 7*71db0c75SAndroid Build Coastguard Worker //===----------------------------------------------------------------------===// 8*71db0c75SAndroid Build Coastguard Worker 9*71db0c75SAndroid Build Coastguard Worker #include "src/sys/mman/msync.h" 10*71db0c75SAndroid Build Coastguard Worker 11*71db0c75SAndroid Build Coastguard Worker #include "src/__support/OSUtil/syscall.h" // For internal syscall function. 12*71db0c75SAndroid Build Coastguard Worker 13*71db0c75SAndroid Build Coastguard Worker #include "src/__support/macros/config.h" 14*71db0c75SAndroid Build Coastguard Worker #include "src/errno/libc_errno.h" 15*71db0c75SAndroid Build Coastguard Worker #include <sys/syscall.h> // For syscall numbers. 16*71db0c75SAndroid Build Coastguard Worker 17*71db0c75SAndroid Build Coastguard Worker namespace LIBC_NAMESPACE_DECL { 18*71db0c75SAndroid Build Coastguard Worker LLVM_LIBC_FUNCTION(int, msync, (void *addr, size_t len, int flags)) { 19*71db0c75SAndroid Build Coastguard Worker long ret = syscall_impl(SYS_msync, cpp::bit_cast<long>(addr), len, flags); 20*71db0c75SAndroid Build Coastguard Worker if (ret < 0) { 21*71db0c75SAndroid Build Coastguard Worker libc_errno = static_cast<int>(-ret); 22*71db0c75SAndroid Build Coastguard Worker return -1; 23*71db0c75SAndroid Build Coastguard Worker } 24*71db0c75SAndroid Build Coastguard Worker return 0; 25*71db0c75SAndroid Build Coastguard Worker } 26*71db0c75SAndroid Build Coastguard Worker } // namespace LIBC_NAMESPACE_DECL 27