llvm/libc/src/sys/stat/linux/kernel_statx.h

//===-- Wrapper over SYS_statx syscall ------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_LIBC_SRC_SYS_STAT_LINUX_KERNEL_STATX_H
#define LLVM_LIBC_SRC_SYS_STAT_LINUX_KERNEL_STATX_H

#include "src/__support/OSUtil/syscall.h" // For internal syscall function.
#include "src/__support/common.h"
#include "src/__support/macros/config.h"

#include <stdint.h>
#include <sys/stat.h>
#include <sys/syscall.h> // For syscall numbers.

// It is safe to include this kernel header as it is designed to be
// included from user programs without causing any name pollution.
#include <linux/kdev_t.h>

namespace {

// The type definitions in the internal namespace match kernel's definition of
// the statx_timestamp and statx types in linux/stat.h. We define equivalent
// types here instead of including that header file to avoid name mixup between
// linux/stat.h and the libc's stat.h.
struct statx_timestamp { … };

struct statx_buf { … };

// The below mask value is based on the definition of a similarly
// named macro in linux/stat.h. When this flag is passed for the
// mask argument to the statx syscall, all fields except the
// stx_btime field will be filled in.
constexpr unsigned int STATX_BASIC_STATS_MASK = …;

} // Anonymous namespace

namespace LIBC_NAMESPACE_DECL {

LIBC_INLINE int statx(int dirfd, const char *__restrict path, int flags,
                      struct stat *__restrict statbuf) { … }

} // namespace LIBC_NAMESPACE_DECL

#endif // LLVM_LIBC_SRC_SYS_STAT_LINUX_KERNEL_STATX_H