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 */ | |