1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_STATFS_H
3#define _LINUX_STATFS_H
4
5#include <linux/types.h>
6#include <asm/statfs.h>
7
8struct kstatfs {
9 long f_type;
10 long f_bsize;
11 u64 f_blocks;
12 u64 f_bfree;
13 u64 f_bavail;
14 u64 f_files;
15 u64 f_ffree;
16 __kernel_fsid_t f_fsid;
17 long f_namelen;
18 long f_frsize;
19 long f_flags;
20 long f_spare[4];
21};
22
23/*
24 * Definitions for the flag in f_flag.
25 *
26 * Generally these flags are equivalent to the MS_ flags used in the mount
27 * ABI. The exception is ST_VALID which has the same value as MS_REMOUNT
28 * which doesn't make any sense for statfs.
29 */
30#define ST_RDONLY 0x0001 /* mount read-only */
31#define ST_NOSUID 0x0002 /* ignore suid and sgid bits */
32#define ST_NODEV 0x0004 /* disallow access to device special files */
33#define ST_NOEXEC 0x0008 /* disallow program execution */
34#define ST_SYNCHRONOUS 0x0010 /* writes are synced at once */
35#define ST_VALID 0x0020 /* f_flags support is implemented */
36#define ST_MANDLOCK 0x0040 /* allow mandatory locks on an FS */
37/* 0x0080 used for ST_WRITE in glibc */
38/* 0x0100 used for ST_APPEND in glibc */
39/* 0x0200 used for ST_IMMUTABLE in glibc */
40#define ST_NOATIME 0x0400 /* do not update access times */
41#define ST_NODIRATIME 0x0800 /* do not update directory access times */
42#define ST_RELATIME 0x1000 /* update atime relative to mtime/ctime */
43
44struct dentry;
45extern int vfs_get_fsid(struct dentry *dentry, __kernel_fsid_t *fsid);
46
47#endif
48