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//===---------- Linux implementation of the msync function ----------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/sys/mman/msync.h"
#include "src/__support/OSUtil/syscall.h" // For internal syscall function.
#include "src/__support/libc_errno.h"
#include "src/__support/macros/config.h"
#include <sys/syscall.h> // For syscall numbers.
namespace LIBC_NAMESPACE_DECL {
LLVM_LIBC_FUNCTION(int, msync, (void *addr, size_t len, int flags)) {
long ret = syscall_impl(SYS_msync, cpp::bit_cast<long>(addr), len, flags);
if (ret < 0) {
libc_errno = static_cast<int>(-ret);
return -1;
}
return 0;
}
} // namespace LIBC_NAMESPACE_DECL
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