1 //===---------- Linux implementation of the mincore 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/mincore.h" 10 11 #include "src/__support/OSUtil/syscall.h" // For internal syscall function. 12 13 #include "src/__support/macros/config.h" 14 #include "src/errno/libc_errno.h" 15 #include <sys/syscall.h> // For syscall numbers. 16 17 namespace LIBC_NAMESPACE_DECL { 18 19 LLVM_LIBC_FUNCTION(int, mincore, (void *addr, size_t len, unsigned char *vec)) { 20 long ret = syscall_impl(SYS_mincore, reinterpret_cast<long>(addr), len, 21 reinterpret_cast<long>(vec)); 22 if (ret < 0) { 23 libc_errno = static_cast<int>(-ret); 24 return -1; 25 } 26 return 0; 27 } 28 29 } // namespace LIBC_NAMESPACE_DECL 30