Like other filesystem does, we introduce a new file f2fs.h in path of include/uapi/linux/, and move f2fs-specified ioctl interface definitions to that file, after then, in order to use those definitions, userspace developer only need to include the new header file rather than copy & paste definitions from fs/f2fs/f2fs.h.
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| 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ | ||
| 2 | |||
| 3 | #ifndef _UAPI_LINUX_F2FS_H | ||
| 4 | #define _UAPI_LINUX_F2FS_H | ||
| 5 | #include <linux/types.h> | ||
| 6 | #include <linux/ioctl.h> | ||
| 7 | |||
| 8 | /* | ||
| 9 | * f2fs-specific ioctl commands | ||
| 10 | */ | ||
| 11 | #define F2FS_IOCTL_MAGIC 0xf5 | ||
| 12 | #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1) | ||
| 13 | #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2) | ||
| 14 | #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3) | ||
| 15 | #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4) | ||
| 16 | #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5) | ||
| 17 | #define F2FS_IOC_GARBAGE_COLLECT _IOW(F2FS_IOCTL_MAGIC, 6, __u32) | ||
| 18 | #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7) | ||
| 19 | #define F2FS_IOC_DEFRAGMENT _IOWR(F2FS_IOCTL_MAGIC, 8, \ | ||
| 20 | struct f2fs_defragment) | ||
| 21 | #define F2FS_IOC_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \ | ||
| 22 | struct f2fs_move_range) | ||
| 23 | #define F2FS_IOC_FLUSH_DEVICE _IOW(F2FS_IOCTL_MAGIC, 10, \ | ||
| 24 | struct f2fs_flush_device) | ||
| 25 | #define F2FS_IOC_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11, \ | ||
| 26 | struct f2fs_gc_range) | ||
| 27 | #define F2FS_IOC_GET_FEATURES _IOR(F2FS_IOCTL_MAGIC, 12, __u32) | ||
| 28 | #define F2FS_IOC_SET_PIN_FILE _IOW(F2FS_IOCTL_MAGIC, 13, __u32) | ||
| 29 | #define F2FS_IOC_GET_PIN_FILE _IOR(F2FS_IOCTL_MAGIC, 14, __u32) | ||
| 30 | #define F2FS_IOC_PRECACHE_EXTENTS _IO(F2FS_IOCTL_MAGIC, 15) | ||
| 31 | #define F2FS_IOC_RESIZE_FS _IOW(F2FS_IOCTL_MAGIC, 16, __u64) | ||
| 32 | #define F2FS_IOC_GET_COMPRESS_BLOCKS _IOR(F2FS_IOCTL_MAGIC, 17, __u64) | ||
| 33 | #define F2FS_IOC_RELEASE_COMPRESS_BLOCKS \ | ||
| 34 | _IOR(F2FS_IOCTL_MAGIC, 18, __u64) | ||
| 35 | #define F2FS_IOC_RESERVE_COMPRESS_BLOCKS \ | ||
| 36 | _IOR(F2FS_IOCTL_MAGIC, 19, __u64) | ||
| 37 | #define F2FS_IOC_SEC_TRIM_FILE _IOW(F2FS_IOCTL_MAGIC, 20, \ | ||
| 38 | struct f2fs_sectrim_range) | ||
| 39 | |||
| 40 | /* | ||
| 41 | * should be same as XFS_IOC_GOINGDOWN. | ||
| 42 | * Flags for going down operation used by FS_IOC_GOINGDOWN | ||
| 43 | */ | ||
| 44 | #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */ | ||
| 45 | #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */ | ||
| 46 | #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */ | ||
| 47 | #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */ | ||
| 48 | #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */ | ||
| 49 | #define F2FS_GOING_DOWN_NEED_FSCK 0x4 /* going down to trigger fsck */ | ||
| 50 | |||
| 51 | /* | ||
| 52 | * Flags used by F2FS_IOC_SEC_TRIM_FILE | ||
| 53 | */ | ||
| 54 | #define F2FS_TRIM_FILE_DISCARD 0x1 /* send discard command */ | ||
| 55 | #define F2FS_TRIM_FILE_ZEROOUT 0x2 /* zero out */ | ||
| 56 | #define F2FS_TRIM_FILE_MASK 0x3 | ||
| 57 | |||
| 58 | struct f2fs_gc_range { | ||
| 59 | __u32 sync; | ||
| 60 | __u64 start; | ||
| 61 | __u64 len; | ||
| 62 | }; | ||
| 63 | |||
| 64 | struct f2fs_defragment { | ||
| 65 | __u64 start; | ||
| 66 | __u64 len; | ||
| 67 | }; | ||
| 68 | |||
| 69 | struct f2fs_move_range { | ||
| 70 | __u32 dst_fd; /* destination fd */ | ||
| 71 | __u64 pos_in; /* start position in src_fd */ | ||
| 72 | __u64 pos_out; /* start position in dst_fd */ | ||
| 73 | __u64 len; /* size to move */ | ||
| 74 | }; | ||
| 75 | |||
| 76 | struct f2fs_flush_device { | ||
| 77 | __u32 dev_num; /* device number to flush */ | ||
| 78 | __u32 segments; /* # of segments to flush */ | ||
| 79 | }; | ||
| 80 | |||
| 81 | struct f2fs_sectrim_range { | ||
| 82 | __u64 start; | ||
| 83 | __u64 len; | ||
| 84 | __u64 flags; | ||
| 85 | }; | ||
| 86 | |||
| 87 | #endif /* _UAPI_LINUX_F2FS_H */ | ||