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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
/**
* @file sys/statvfs.h
* @brief Filesystem statistics.
*/
#include <stdint.h>
#include <sys/cdefs.h>
#include <sys/types.h>
__BEGIN_DECLS
#define __STATVFS64_BODY \
/** Block size. */ \
unsigned long f_bsize; \
/** Fragment size. */ \
unsigned long f_frsize; \
/** Total size of filesystem in `f_frsize` blocks. */ \
fsblkcnt_t f_blocks; \
/** Number of free blocks. */ \
fsblkcnt_t f_bfree; \
/** Number of free blocks for non-root. */ \
fsblkcnt_t f_bavail; \
/** Number of inodes. */ \
fsfilcnt_t f_files; \
/** Number of free inodes. */ \
fsfilcnt_t f_ffree; \
/** Number of free inodes for non-root. */ \
fsfilcnt_t f_favail; \
/** Filesystem id. */ \
unsigned long f_fsid; \
/** Mount flags. (See `ST_` constants.) */ \
unsigned long f_flag; \
/** Maximum filename length. */ \
unsigned long f_namemax; \
#if defined(__LP64__)
#define __STATVFS64_CODA uint32_t __f_reserved[6];
#else
#define __STATVFS64_CODA
#endif
struct statvfs { __STATVFS64_BODY __STATVFS64_CODA };
struct statvfs64 { __STATVFS64_BODY __STATVFS64_CODA };
/** Flag for `f_flag` in `struct statvfs`: mounted read-only. */
#define ST_RDONLY 0x0001
/** Flag for `f_flag` in `struct statvfs`: setuid/setgid ignored. */
#define ST_NOSUID 0x0002
/** Flag for `f_flag` in `struct statvfs`: access to device files disallowed. */
#define ST_NODEV 0x0004
/** Flag for `f_flag` in `struct statvfs`: execution disallowed. */
#define ST_NOEXEC 0x0008
/** Flag for `f_flag` in `struct statvfs`: writes synced immediately. */
#define ST_SYNCHRONOUS 0x0010
/** Flag for `f_flag` in `struct statvfs`: mandatory locking permitted. */
#define ST_MANDLOCK 0x0040
/** Flag for `f_flag` in `struct statvfs`: access times not updated. */
#define ST_NOATIME 0x0400
/** Flag for `f_flag` in `struct statvfs`: directory access times not updated. */
#define ST_NODIRATIME 0x0800
/** Flag for `f_flag` in `struct statvfs`: see `MS_RELATIME`. */
#define ST_RELATIME 0x1000
/** Flag for `f_flag` in `struct statvfs`: don't follow symlinks. */
#define ST_NOSYMFOLLOW 0x2000
/**
* [statvfs(3)](http://man7.org/linux/man-pages/man3/statvfs.3.html)
* queries filesystem statistics for the given path.
*
* Returns 0 on success, and returns -1 and sets `errno` on failure.
*/
int statvfs(const char* _Nonnull __path, struct statvfs* _Nonnull __buf);
/**
* [fstatvfs(3)](http://man7.org/linux/man-pages/man3/fstatvfs.3.html)
* queries filesystem statistics for the given file descriptor.
*
* Returns 0 on success, and returns -1 and sets `errno` on failure.
*/
int fstatvfs(int __fd, struct statvfs* _Nonnull __buf);
/** Equivalent to statvfs() . */
int statvfs64(const char* _Nonnull __path, struct statvfs64* _Nonnull __buf);
/** Equivalent to fstatvfs(). */
int fstatvfs64(int __fd, struct statvfs64* _Nonnull __buf);
__END_DECLS
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