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 8 struct 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 #define ST_NOSYMFOLLOW 0x2000 /* do not follow symlinks */ 44 45 struct dentry; 46 extern int vfs_get_fsid(struct dentry *dentry, __kernel_fsid_t *fsid); 47 u64_to_fsid(u64 v)48static inline __kernel_fsid_t u64_to_fsid(u64 v) 49 { 50 return (__kernel_fsid_t){.val = {(u32)v, (u32)(v>>32)}}; 51 } 52 53 #endif 54
