projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 1da177e4 LT |
2 | #ifndef _LINUX_STATFS_H |
| 3 | #define _LINUX_STATFS_H | |
| 4 | ||
| 5 | #include <linux/types.h> | |
| 1da177e4 | 6 | #include <asm/statfs.h> |
| 9591c3a3 | 7 | #include <asm/byteorder.h> |
| 1da177e4 LT |
8 | |
| 9 | struct kstatfs { | |
| 10 | long f_type; | |
| 11 | long f_bsize; | |
| e2d53f95 TS |
12 | u64 f_blocks; |
| 13 | u64 f_bfree; | |
| 14 | u64 f_bavail; | |
| 15 | u64 f_files; | |
| 16 | u64 f_ffree; | |
| 1da177e4 LT |
17 | __kernel_fsid_t f_fsid; |
| 18 | long f_namelen; | |
| 19 | long f_frsize; | |
| 365b1818 CH |
20 | long f_flags; |
| 21 | long f_spare[4]; | |
| 1da177e4 LT |
22 | }; |
| 23 | ||
| 365b1818 CH |
24 | /* |
| 25 | * Definitions for the flag in f_flag. | |
| 26 | * | |
| 27 | * Generally these flags are equivalent to the MS_ flags used in the mount | |
| 28 | * ABI. The exception is ST_VALID which has the same value as MS_REMOUNT | |
| 29 | * which doesn't make any sense for statfs. | |
| 30 | */ | |
| 31 | #define ST_RDONLY 0x0001 /* mount read-only */ | |
| 32 | #define ST_NOSUID 0x0002 /* ignore suid and sgid bits */ | |
| 33 | #define ST_NODEV 0x0004 /* disallow access to device special files */ | |
| 34 | #define ST_NOEXEC 0x0008 /* disallow program execution */ | |
| 35 | #define ST_SYNCHRONOUS 0x0010 /* writes are synced at once */ | |
| 36 | #define ST_VALID 0x0020 /* f_flags support is implemented */ | |
| 37 | #define ST_MANDLOCK 0x0040 /* allow mandatory locks on an FS */ | |
| 38 | /* 0x0080 used for ST_WRITE in glibc */ | |
| 39 | /* 0x0100 used for ST_APPEND in glibc */ | |
| 40 | /* 0x0200 used for ST_IMMUTABLE in glibc */ | |
| 41 | #define ST_NOATIME 0x0400 /* do not update access times */ | |
| 42 | #define ST_NODIRATIME 0x0800 /* do not update directory access times */ | |
| 43 | #define ST_RELATIME 0x1000 /* update atime relative to mtime/ctime */ | |
| dab741e0 | 44 | #define ST_NOSYMFOLLOW 0x2000 /* do not follow symlinks */ |
| 365b1818 | 45 | |
| ec86ff56 AG |
46 | struct dentry; |
| 47 | extern int vfs_get_fsid(struct dentry *dentry, __kernel_fsid_t *fsid); | |
| 48 | ||
| 6d1349c7 AV |
49 | static inline __kernel_fsid_t u64_to_fsid(u64 v) |
| 50 | { | |
| 51 | return (__kernel_fsid_t){.val = {(u32)v, (u32)(v>>32)}}; | |
| 52 | } | |
| 53 | ||
| 9591c3a3 AG |
54 | /* Fold 16 bytes uuid to 64 bit fsid */ |
| 55 | static inline __kernel_fsid_t uuid_to_fsid(__u8 *uuid) | |
| 56 | { | |
| 57 | return u64_to_fsid(le64_to_cpup((void *)uuid) ^ | |
| 58 | le64_to_cpup((void *)(uuid + sizeof(u64)))); | |
| 59 | } | |
| 60 | ||
| 1da177e4 | 61 | #endif |