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