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//===-- Linux implementation of getpagesize -------------------------------===//
//
// 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/unistd/getpagesize.h"
#include "src/__support/OSUtil/linux/auxv.h"
#include "src/__support/common.h"
#include "src/__support/macros/config.h"
namespace LIBC_NAMESPACE_DECL {
LLVM_LIBC_FUNCTION(int, getpagesize, ()) {
cpp::optional<unsigned long> page_size =
(LIBC_NAMESPACE::auxv::get(AT_PAGESZ));
if (page_size)
return static_cast<int>(*page_size);
return -1;
}
} // namespace LIBC_NAMESPACE_DECL
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