150 lines
4.1 KiB
C
150 lines
4.1 KiB
C
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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/**
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* @file sys/statvfs.h
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* @brief Filesystem statistics.
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*/
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#include <stdint.h>
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#include <sys/cdefs.h>
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#include <sys/types.h>
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__BEGIN_DECLS
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struct statvfs {
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/** Block size. */
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unsigned long f_bsize;
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/** Fragment size. */
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unsigned long f_frsize;
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/** Total size of filesystem in `f_frsize` blocks. */
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fsblkcnt_t f_blocks;
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/** Number of free blocks. */
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fsblkcnt_t f_bfree;
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/** Number of free blocks for non-root. */
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fsblkcnt_t f_bavail;
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/** Number of inodes. */
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fsfilcnt_t f_files;
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/** Number of free inodes. */
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fsfilcnt_t f_ffree;
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/** Number of free inodes for non-root. */
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fsfilcnt_t f_favail;
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/** Filesystem id. */
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unsigned long f_fsid;
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/** Mount flags. (See `ST_` constants.) */
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unsigned long f_flag;
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/** Maximum filename length. */
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unsigned long f_namemax;
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#if defined(__LP64__)
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uint32_t __f_reserved[6];
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#endif
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};
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struct statvfs64 {
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/** Block size. */
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unsigned long f_bsize;
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/** Fragment size. */
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unsigned long f_frsize;
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/** Total size of filesystem in `f_frsize` blocks. */
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fsblkcnt_t f_blocks;
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/** Number of free blocks. */
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fsblkcnt_t f_bfree;
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/** Number of free blocks for non-root. */
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fsblkcnt_t f_bavail;
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/** Number of inodes. */
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fsfilcnt_t f_files;
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/** Number of free inodes. */
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fsfilcnt_t f_ffree;
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/** Number of free inodes for non-root. */
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fsfilcnt_t f_favail;
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/** Filesystem id. */
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unsigned long f_fsid;
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/** Mount flags. (See `ST_` constants.) */
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unsigned long f_flag;
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/** Maximum filename length. */
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unsigned long f_namemax;
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#if defined(__LP64__)
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uint32_t __f_reserved[6];
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#endif
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};
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/** Flag for `f_flag` in `struct statvfs`: mounted read-only. */
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#define ST_RDONLY 0x0001
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/** Flag for `f_flag` in `struct statvfs`: setuid/setgid ignored. */
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#define ST_NOSUID 0x0002
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/** Flag for `f_flag` in `struct statvfs`: access to device files disallowed. */
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#define ST_NODEV 0x0004
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/** Flag for `f_flag` in `struct statvfs`: execution disallowed. */
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#define ST_NOEXEC 0x0008
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/** Flag for `f_flag` in `struct statvfs`: writes synced immediately. */
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#define ST_SYNCHRONOUS 0x0010
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/** Flag for `f_flag` in `struct statvfs`: mandatory locking permitted. */
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#define ST_MANDLOCK 0x0040
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/** Flag for `f_flag` in `struct statvfs`: access times not updated. */
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#define ST_NOATIME 0x0400
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/** Flag for `f_flag` in `struct statvfs`: directory access times not updated. */
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#define ST_NODIRATIME 0x0800
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/** Flag for `f_flag` in `struct statvfs`: see `MS_RELATIME`. */
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#define ST_RELATIME 0x1000
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#if __ANDROID_API__ >= 19
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// These functions are implemented as static inlines before API level 19.
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/**
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* [statvfs(3)](http://man7.org/linux/man-pages/man3/statvfs.3.html)
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* queries filesystem statistics for the given path.
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*
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* Returns 0 on success, and returns -1 and sets `errno` on failure.
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*/
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int statvfs(const char* __path, struct statvfs* __buf) __INTRODUCED_IN(19);
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/**
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* [fstatvfs(3)](http://man7.org/linux/man-pages/man3/fstatvfs.3.html)
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* queries filesystem statistics for the given file descriptor.
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*
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* Returns 0 on success, and returns -1 and sets `errno` on failure.
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*/
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int fstatvfs(int __fd, struct statvfs* __buf) __INTRODUCED_IN(19);
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#endif
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#if __ANDROID_API__ >= 21
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// These functions are implemented as static inlines before API level 21.
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/** Equivalent to statvfs(). */
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int statvfs64(const char* __path, struct statvfs64* __buf) __INTRODUCED_IN(21);
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/** Equivalent to fstatvfs(). */
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int fstatvfs64(int __fd, struct statvfs64* __buf) __INTRODUCED_IN(21);
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#endif
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__END_DECLS
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#include <android/legacy_sys_statvfs_inlines.h>
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