| 1 | //===---------- Linux implementation of the mlock 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/mlock2.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 | |
| 17 | namespace LIBC_NAMESPACE_DECL { |
| 18 | #ifdef SYS_mlock2 |
| 19 | LLVM_LIBC_FUNCTION(int, mlock2, (const void *addr, size_t len, int flags)) { |
| 20 | long ret = syscall_impl(SYS_mlock2, cpp::bit_cast<long>(addr), len, flags); |
| 21 | if (ret < 0) { |
| 22 | libc_errno = static_cast<int>(-ret); |
| 23 | return -1; |
| 24 | } |
| 25 | return 0; |
| 26 | } |
| 27 | #endif |
| 28 | } // namespace LIBC_NAMESPACE_DECL |
| 29 |