| 1 | //===---------- Linux implementation of the msync 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-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "src/sys/mman/msync.h" |
| 10 | |
| 11 | #include "src/__support/OSUtil/syscall.h" // For internal syscall function. |
| 12 | |
| 13 | #include "src/errno/libc_errno.h" |
| 14 | #include <sys/syscall.h> // For syscall numbers. |
| 15 | |
| 16 | namespace LIBC_NAMESPACE { |
| 17 | LLVM_LIBC_FUNCTION(int, msync, (void *addr, size_t len, int flags)) { |
| 18 | long ret = syscall_impl(SYS_msync, arg1: cpp::bit_cast<long>(from: addr), arg2: len, arg3: flags); |
| 19 | if (ret < 0) { |
| 20 | libc_errno = static_cast<int>(-ret); |
| 21 | return -1; |
| 22 | } |
| 23 | return 0; |
| 24 | } |
| 25 | } // namespace LIBC_NAMESPACE |
| 26 |