[linux-2.6-block.git] / include / uapi / linux / io_uring.h

/* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) OR MIT */
/*
 * Header file for the io_uring interface.
 *
 * Copyright (C) 2019 Jens Axboe
 * Copyright (C) 2019 Christoph Hellwig
 */
#ifndef LINUX_IO_URING_H
#define LINUX_IO_URING_H

#include <linux/fs.h>
#include <linux/types.h>

/*
 * IO submission data structure (Submission Queue Entry)
 */
struct io_uring_sqe {
	__u8	opcode;		/* type of operation for this sqe */
	__u8	flags;		/* IOSQE_ flags */
	__u16	ioprio;		/* ioprio for the request */
	__s32	fd;		/* file descriptor to do IO on */
	union {
		__u64	off;	/* offset into file */
		__u64	addr2;
	};
	union {
		__u64	addr;	/* pointer to buffer or iovecs */
		__u64	splice_off_in;
	};
	__u32	len;		/* buffer size or number of iovecs */
	union {
		__kernel_rwf_t	rw_flags;
		__u32		fsync_flags;
		__u16		poll_events;	/* compatibility */
		__u32		poll32_events;	/* word-reversed for BE */
		__u32		sync_range_flags;
		__u32		msg_flags;
		__u32		timeout_flags;
		__u32		accept_flags;
		__u32		cancel_flags;
		__u32		open_flags;
		__u32		statx_flags;
		__u32		fadvise_advice;
		__u32		splice_flags;
	};
	__u64	user_data;	/* data to be passed back at completion time */
	union {
		struct {
			/* pack this to avoid bogus arm OABI complaints */
			union {
				/* index into fixed buffers, if used */
				__u16	buf_index;
				/* for grouped buffer selection */
				__u16	buf_group;
			} __attribute__((packed));
			/* personality to use, if used */
			__u16	personality;
			__s32	splice_fd_in;
		};
		__u64	__pad2[3];
	};
};

enum {
	IOSQE_FIXED_FILE_BIT,
	IOSQE_IO_DRAIN_BIT,
	IOSQE_IO_LINK_BIT,
	IOSQE_IO_HARDLINK_BIT,
	IOSQE_ASYNC_BIT,
	IOSQE_BUFFER_SELECT_BIT,
};

/*
 * sqe->flags
 */
/* use fixed fileset */
#define IOSQE_FIXED_FILE	(1U << IOSQE_FIXED_FILE_BIT)
/* issue after inflight IO */
#define IOSQE_IO_DRAIN		(1U << IOSQE_IO_DRAIN_BIT)
/* links next sqe */
#define IOSQE_IO_LINK		(1U << IOSQE_IO_LINK_BIT)
/* like LINK, but stronger */
#define IOSQE_IO_HARDLINK	(1U << IOSQE_IO_HARDLINK_BIT)
/* always go async */
#define IOSQE_ASYNC		(1U << IOSQE_ASYNC_BIT)
/* select buffer from sqe->buf_group */
#define IOSQE_BUFFER_SELECT	(1U << IOSQE_BUFFER_SELECT_BIT)

/*
 * io_uring_setup() flags
 */
#define IORING_SETUP_IOPOLL	(1U << 0)	/* io_context is polled */
#define IORING_SETUP_SQPOLL	(1U << 1)	/* SQ poll thread */
#define IORING_SETUP_SQ_AFF	(1U << 2)	/* sq_thread_cpu is valid */
#define IORING_SETUP_CQSIZE	(1U << 3)	/* app defines CQ size */
#define IORING_SETUP_CLAMP	(1U << 4)	/* clamp SQ/CQ ring sizes */
#define IORING_SETUP_ATTACH_WQ	(1U << 5)	/* attach to existing wq */
#define IORING_SETUP_R_DISABLED	(1U << 6)	/* start with ring disabled */

enum {
	IORING_OP_NOP,
	IORING_OP_READV,
	IORING_OP_WRITEV,
	IORING_OP_FSYNC,
	IORING_OP_READ_FIXED,
	IORING_OP_WRITE_FIXED,
	IORING_OP_POLL_ADD,
	IORING_OP_POLL_REMOVE,
	IORING_OP_SYNC_FILE_RANGE,
	IORING_OP_SENDMSG,
	IORING_OP_RECVMSG,
	IORING_OP_TIMEOUT,
	IORING_OP_TIMEOUT_REMOVE,
	IORING_OP_ACCEPT,
	IORING_OP_ASYNC_CANCEL,
	IORING_OP_LINK_TIMEOUT,
	IORING_OP_CONNECT,
	IORING_OP_FALLOCATE,
	IORING_OP_OPENAT,
	IORING_OP_CLOSE,
	IORING_OP_FILES_UPDATE,
	IORING_OP_STATX,
	IORING_OP_READ,
	IORING_OP_WRITE,
	IORING_OP_FADVISE,
	IORING_OP_MADVISE,
	IORING_OP_SEND,
	IORING_OP_RECV,
	IORING_OP_OPENAT2,
	IORING_OP_EPOLL_CTL,
	IORING_OP_SPLICE,
	IORING_OP_PROVIDE_BUFFERS,
	IORING_OP_REMOVE_BUFFERS,
	IORING_OP_TEE,

	/* this goes last, obviously */
	IORING_OP_LAST,
};

/*
 * sqe->fsync_flags
 */
#define IORING_FSYNC_DATASYNC	(1U << 0)

/*
 * sqe->timeout_flags
 */
#define IORING_TIMEOUT_ABS	(1U << 0)

/*
 * sqe->splice_flags
 * extends splice(2) flags
 */
#define SPLICE_F_FD_IN_FIXED	(1U << 31) /* the last bit of __u32 */

/*
 * IO completion data structure (Completion Queue Entry)
 */
struct io_uring_cqe {
	__u64	user_data;	/* sqe->data submission passed back */
	__s32	res;		/* result code for this event */
	__u32	flags;
};

/*
 * cqe->flags
 *
 * IORING_CQE_F_BUFFER	If set, the upper 16 bits are the buffer ID
 */
#define IORING_CQE_F_BUFFER		(1U << 0)

enum {
	IORING_CQE_BUFFER_SHIFT		= 16,
};

/*
 * Magic offsets for the application to mmap the data it needs
 */
#define IORING_OFF_SQ_RING		0ULL
#define IORING_OFF_CQ_RING		0x8000000ULL
#define IORING_OFF_SQES			0x10000000ULL

/*
 * Filled with the offset for mmap(2)
 */
struct io_sqring_offsets {
	__u32 head;
	__u32 tail;
	__u32 ring_mask;
	__u32 ring_entries;
	__u32 flags;
	__u32 dropped;
	__u32 array;
	__u32 resv1;
	__u64 resv2;
};

/*
 * sq_ring->flags
 */
#define IORING_SQ_NEED_WAKEUP	(1U << 0) /* needs io_uring_enter wakeup */
#define IORING_SQ_CQ_OVERFLOW	(1U << 1) /* CQ ring is overflown */

struct io_cqring_offsets {
	__u32 head;
	__u32 tail;
	__u32 ring_mask;
	__u32 ring_entries;
	__u32 overflow;
	__u32 cqes;
	__u32 flags;
	__u32 resv1;
	__u64 resv2;
};

/*
 * cq_ring->flags
 */

/* disable eventfd notifications */
#define IORING_CQ_EVENTFD_DISABLED	(1U << 0)

/*
 * io_uring_enter(2) flags
 */
#define IORING_ENTER_GETEVENTS	(1U << 0)
#define IORING_ENTER_SQ_WAKEUP	(1U << 1)
#define IORING_ENTER_SQ_WAIT	(1U << 2)

/*
 * Passed in for io_uring_setup(2). Copied back with updated info on success
 */
struct io_uring_params {
	__u32 sq_entries;
	__u32 cq_entries;
	__u32 flags;
	__u32 sq_thread_cpu;
	__u32 sq_thread_idle;
	__u32 features;
	__u32 wq_fd;
	__u32 resv[3];
	struct io_sqring_offsets sq_off;
	struct io_cqring_offsets cq_off;
};

/*
 * io_uring_params->features flags
 */
#define IORING_FEAT_SINGLE_MMAP		(1U << 0)
#define IORING_FEAT_NODROP		(1U << 1)
#define IORING_FEAT_SUBMIT_STABLE	(1U << 2)
#define IORING_FEAT_RW_CUR_POS		(1U << 3)
#define IORING_FEAT_CUR_PERSONALITY	(1U << 4)
#define IORING_FEAT_FAST_POLL		(1U << 5)
#define IORING_FEAT_POLL_32BITS 	(1U << 6)

/*
 * io_uring_register(2) opcodes and arguments
 */
enum {
	IORING_REGISTER_BUFFERS			= 0,
	IORING_UNREGISTER_BUFFERS		= 1,
	IORING_REGISTER_FILES			= 2,
	IORING_UNREGISTER_FILES			= 3,
	IORING_REGISTER_EVENTFD			= 4,
	IORING_UNREGISTER_EVENTFD		= 5,
	IORING_REGISTER_FILES_UPDATE		= 6,
	IORING_REGISTER_EVENTFD_ASYNC		= 7,
	IORING_REGISTER_PROBE			= 8,
	IORING_REGISTER_PERSONALITY		= 9,
	IORING_UNREGISTER_PERSONALITY		= 10,
	IORING_REGISTER_RESTRICTIONS		= 11,
	IORING_REGISTER_ENABLE_RINGS		= 12,

	/* this goes last */
	IORING_REGISTER_LAST
};

struct io_uring_files_update {
	__u32 offset;
	__u32 resv;
	__aligned_u64 /* __s32 * */ fds;
};

#define IO_URING_OP_SUPPORTED	(1U << 0)

struct io_uring_probe_op {
	__u8 op;
	__u8 resv;
	__u16 flags;	/* IO_URING_OP_* flags */
	__u32 resv2;
};

struct io_uring_probe {
	__u8 last_op;	/* last opcode supported */
	__u8 ops_len;	/* length of ops[] array below */
	__u16 resv;
	__u32 resv2[3];
	struct io_uring_probe_op ops[0];
};

struct io_uring_restriction {
	__u16 opcode;
	union {
		__u8 register_op; /* IORING_RESTRICTION_REGISTER_OP */
		__u8 sqe_op;      /* IORING_RESTRICTION_SQE_OP */
		__u8 sqe_flags;   /* IORING_RESTRICTION_SQE_FLAGS_* */
	};
	__u8 resv;
	__u32 resv2[3];
};

/*
 * io_uring_restriction->opcode values
 */
enum {
	/* Allow an io_uring_register(2) opcode */
	IORING_RESTRICTION_REGISTER_OP		= 0,

	/* Allow an sqe opcode */
	IORING_RESTRICTION_SQE_OP		= 1,

	/* Allow sqe flags */
	IORING_RESTRICTION_SQE_FLAGS_ALLOWED	= 2,

	/* Require sqe flags (these flags must be set on each submission) */
	IORING_RESTRICTION_SQE_FLAGS_REQUIRED	= 3,

	IORING_RESTRICTION_LAST
};

#endif
Commit	Line	Data
9f5834c8	1	/* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) OR MIT */
2b188cc1 JA	2	/*
	3	* Header file for the io_uring interface.
	4	*
	5	* Copyright (C) 2019 Jens Axboe
	6	* Copyright (C) 2019 Christoph Hellwig
	7	*/
	8	#ifndef LINUX_IO_URING_H
	9	#define LINUX_IO_URING_H
	10
	11	#include <linux/fs.h>
	12	#include <linux/types.h>
	13
	14	/*
	15	* IO submission data structure (Submission Queue Entry)
	16	*/
	17	struct io_uring_sqe {
	18	__u8 opcode; /* type of operation for this sqe */
6b06314c	19	__u8 flags; /* IOSQE_ flags */
2b188cc1 JA	20	__u16 ioprio; /* ioprio for the request */
2b188cc1 JA	21	__s32 fd; /* file descriptor to do IO on */
17f2fe35 JA	22	union {
	23	__u64 off; /* offset into file */
	24	__u64 addr2;
	25	};
7d67af2c PB	26	union {
	27	__u64 addr; /* pointer to buffer or iovecs */
	28	__u64 splice_off_in;
	29	};
2b188cc1 JA	30	__u32 len; /* buffer size or number of iovecs */
	31	union {
	32	__kernel_rwf_t rw_flags;
c992fe29	33	__u32 fsync_flags;
5769a351 JX	34	__u16 poll_events; /* compatibility */
5769a351 JX	35	__u32 poll32_events; /* word-reversed for BE */
5d17b4a4	36	__u32 sync_range_flags;
0fa03c62	37	__u32 msg_flags;
5262f567	38	__u32 timeout_flags;
17f2fe35	39	__u32 accept_flags;
62755e35	40	__u32 cancel_flags;
15b71abe	41	__u32 open_flags;
eddc7ef5	42	__u32 statx_flags;
4840e418	43	__u32 fadvise_advice;
7d67af2c	44	__u32 splice_flags;
2b188cc1 JA	45	};
2b188cc1 JA	46	__u64 user_data; /* data to be passed back at completion time */
edafccee	47	union {
75c6a039	48	struct {
ddf0322d JA	49	/* pack this to avoid bogus arm OABI complaints */
	50	union {
	51	/* index into fixed buffers, if used */
	52	__u16 buf_index;
	53	/* for grouped buffer selection */
	54	__u16 buf_group;
	55	} __attribute__((packed));
75c6a039 JA	56	/* personality to use, if used */
75c6a039 JA	57	__u16 personality;
7d67af2c	58	__s32 splice_fd_in;
75c6a039	59	};
edafccee JA	60	__u64 __pad2[3];
edafccee JA	61	};
2b188cc1 JA	62	};
2b188cc1 JA	63
6b47ee6e PB	64	enum {
	65	IOSQE_FIXED_FILE_BIT,
	66	IOSQE_IO_DRAIN_BIT,
	67	IOSQE_IO_LINK_BIT,
	68	IOSQE_IO_HARDLINK_BIT,
	69	IOSQE_ASYNC_BIT,
bcda7baa	70	IOSQE_BUFFER_SELECT_BIT,
6b47ee6e PB	71	};
6b47ee6e PB	72
6b06314c JA	73	/*
	74	* sqe->flags
	75	*/
6b47ee6e PB	76	/* use fixed fileset */
	77	#define IOSQE_FIXED_FILE (1U << IOSQE_FIXED_FILE_BIT)
	78	/* issue after inflight IO */
	79	#define IOSQE_IO_DRAIN (1U << IOSQE_IO_DRAIN_BIT)
	80	/* links next sqe */
	81	#define IOSQE_IO_LINK (1U << IOSQE_IO_LINK_BIT)
	82	/* like LINK, but stronger */
	83	#define IOSQE_IO_HARDLINK (1U << IOSQE_IO_HARDLINK_BIT)
	84	/* always go async */
	85	#define IOSQE_ASYNC (1U << IOSQE_ASYNC_BIT)
bcda7baa JA	86	/* select buffer from sqe->buf_group */
bcda7baa JA	87	#define IOSQE_BUFFER_SELECT (1U << IOSQE_BUFFER_SELECT_BIT)
6b06314c	88
def596e9 JA	89	/*
	90	* io_uring_setup() flags
	91	*/
	92	#define IORING_SETUP_IOPOLL (1U << 0) /* io_context is polled */
6c271ce2 JA	93	#define IORING_SETUP_SQPOLL (1U << 1) /* SQ poll thread */
6c271ce2 JA	94	#define IORING_SETUP_SQ_AFF (1U << 2) /* sq_thread_cpu is valid */
33a107f0	95	#define IORING_SETUP_CQSIZE (1U << 3) /* app defines CQ size */
8110c1a6	96	#define IORING_SETUP_CLAMP (1U << 4) /* clamp SQ/CQ ring sizes */
24369c2e	97	#define IORING_SETUP_ATTACH_WQ (1U << 5) /* attach to existing wq */
7e84e1c7	98	#define IORING_SETUP_R_DISABLED (1U << 6) /* start with ring disabled */
def596e9	99
9e3aa61a JA	100	enum {
	101	IORING_OP_NOP,
	102	IORING_OP_READV,
	103	IORING_OP_WRITEV,
	104	IORING_OP_FSYNC,
	105	IORING_OP_READ_FIXED,
	106	IORING_OP_WRITE_FIXED,
	107	IORING_OP_POLL_ADD,
	108	IORING_OP_POLL_REMOVE,
	109	IORING_OP_SYNC_FILE_RANGE,
	110	IORING_OP_SENDMSG,
	111	IORING_OP_RECVMSG,
	112	IORING_OP_TIMEOUT,
	113	IORING_OP_TIMEOUT_REMOVE,
	114	IORING_OP_ACCEPT,
	115	IORING_OP_ASYNC_CANCEL,
	116	IORING_OP_LINK_TIMEOUT,
	117	IORING_OP_CONNECT,
d63d1b5e	118	IORING_OP_FALLOCATE,
15b71abe	119	IORING_OP_OPENAT,
b5dba59e	120	IORING_OP_CLOSE,
05f3fb3c	121	IORING_OP_FILES_UPDATE,
eddc7ef5	122	IORING_OP_STATX,
3a6820f2 JA	123	IORING_OP_READ,
3a6820f2 JA	124	IORING_OP_WRITE,
4840e418	125	IORING_OP_FADVISE,
c1ca757b	126	IORING_OP_MADVISE,
fddaface JA	127	IORING_OP_SEND,
fddaface JA	128	IORING_OP_RECV,
cebdb986	129	IORING_OP_OPENAT2,
3e4827b0	130	IORING_OP_EPOLL_CTL,
7d67af2c	131	IORING_OP_SPLICE,
ddf0322d	132	IORING_OP_PROVIDE_BUFFERS,
067524e9	133	IORING_OP_REMOVE_BUFFERS,
f2a8d5c7	134	IORING_OP_TEE,
9e3aa61a JA	135
	136	/* this goes last, obviously */
	137	IORING_OP_LAST,
	138	};
c992fe29 CH	139
	140	/*
	141	* sqe->fsync_flags
	142	*/
	143	#define IORING_FSYNC_DATASYNC (1U << 0)
2b188cc1	144
a41525ab JA	145	/*
	146	* sqe->timeout_flags
	147	*/
	148	#define IORING_TIMEOUT_ABS (1U << 0)
	149
7d67af2c PB	150	/*
	151	* sqe->splice_flags
	152	* extends splice(2) flags
	153	*/
	154	#define SPLICE_F_FD_IN_FIXED (1U << 31) /* the last bit of __u32 */
	155
2b188cc1 JA	156	/*
	157	* IO completion data structure (Completion Queue Entry)
	158	*/
	159	struct io_uring_cqe {
	160	__u64 user_data; /* sqe->data submission passed back */
	161	__s32 res; /* result code for this event */
	162	__u32 flags;
	163	};
	164
bcda7baa JA	165	/*
	166	* cqe->flags
	167	*
	168	* IORING_CQE_F_BUFFER If set, the upper 16 bits are the buffer ID
	169	*/
	170	#define IORING_CQE_F_BUFFER (1U << 0)
	171
	172	enum {
	173	IORING_CQE_BUFFER_SHIFT = 16,
	174	};
	175
2b188cc1 JA	176	/*
	177	* Magic offsets for the application to mmap the data it needs
	178	*/
	179	#define IORING_OFF_SQ_RING 0ULL
	180	#define IORING_OFF_CQ_RING 0x8000000ULL
	181	#define IORING_OFF_SQES 0x10000000ULL
	182
	183	/*
	184	* Filled with the offset for mmap(2)
	185	*/
	186	struct io_sqring_offsets {
	187	__u32 head;
	188	__u32 tail;
	189	__u32 ring_mask;
	190	__u32 ring_entries;
	191	__u32 flags;
	192	__u32 dropped;
	193	__u32 array;
	194	__u32 resv1;
	195	__u64 resv2;
	196	};
	197
6c271ce2 JA	198	/*
	199	* sq_ring->flags
	200	*/
	201	#define IORING_SQ_NEED_WAKEUP (1U << 0) /* needs io_uring_enter wakeup */
6d5f9049	202	#define IORING_SQ_CQ_OVERFLOW (1U << 1) /* CQ ring is overflown */
6c271ce2	203
2b188cc1 JA	204	struct io_cqring_offsets {
	205	__u32 head;
	206	__u32 tail;
	207	__u32 ring_mask;
	208	__u32 ring_entries;
	209	__u32 overflow;
	210	__u32 cqes;
0d9b5b3a SG	211	__u32 flags;
	212	__u32 resv1;
	213	__u64 resv2;
2b188cc1 JA	214	};
2b188cc1 JA	215
7e55a19c SG	216	/*
	217	* cq_ring->flags
	218	*/
	219
	220	/* disable eventfd notifications */
	221	#define IORING_CQ_EVENTFD_DISABLED (1U << 0)
	222
2b188cc1 JA	223	/*
	224	* io_uring_enter(2) flags
	225	*/
	226	#define IORING_ENTER_GETEVENTS (1U << 0)
6c271ce2	227	#define IORING_ENTER_SQ_WAKEUP (1U << 1)
90554200	228	#define IORING_ENTER_SQ_WAIT (1U << 2)
2b188cc1 JA	229
	230	/*
	231	* Passed in for io_uring_setup(2). Copied back with updated info on success
	232	*/
	233	struct io_uring_params {
	234	__u32 sq_entries;
	235	__u32 cq_entries;
	236	__u32 flags;
6c271ce2 JA	237	__u32 sq_thread_cpu;
6c271ce2 JA	238	__u32 sq_thread_idle;
ac90f249	239	__u32 features;
24369c2e PB	240	__u32 wq_fd;
24369c2e PB	241	__u32 resv[3];
2b188cc1 JA	242	struct io_sqring_offsets sq_off;
	243	struct io_cqring_offsets cq_off;
	244	};
	245
ac90f249 JA	246	/*
	247	* io_uring_params->features flags
	248	*/
	249	#define IORING_FEAT_SINGLE_MMAP (1U << 0)
1d7bb1d5	250	#define IORING_FEAT_NODROP (1U << 1)
da8c9690	251	#define IORING_FEAT_SUBMIT_STABLE (1U << 2)
ba04291e	252	#define IORING_FEAT_RW_CUR_POS (1U << 3)
cccf0ee8	253	#define IORING_FEAT_CUR_PERSONALITY (1U << 4)
d7718a9d	254	#define IORING_FEAT_FAST_POLL (1U << 5)
5769a351	255	#define IORING_FEAT_POLL_32BITS (1U << 6)
ac90f249	256
edafccee JA	257	/*
	258	* io_uring_register(2) opcodes and arguments
	259	*/
9d4a75ef SG	260	enum {
	261	IORING_REGISTER_BUFFERS = 0,
	262	IORING_UNREGISTER_BUFFERS = 1,
	263	IORING_REGISTER_FILES = 2,
	264	IORING_UNREGISTER_FILES = 3,
	265	IORING_REGISTER_EVENTFD = 4,
	266	IORING_UNREGISTER_EVENTFD = 5,
	267	IORING_REGISTER_FILES_UPDATE = 6,
	268	IORING_REGISTER_EVENTFD_ASYNC = 7,
	269	IORING_REGISTER_PROBE = 8,
	270	IORING_REGISTER_PERSONALITY = 9,
	271	IORING_UNREGISTER_PERSONALITY = 10,
21b55dbc	272	IORING_REGISTER_RESTRICTIONS = 11,
7e84e1c7	273	IORING_REGISTER_ENABLE_RINGS = 12,
9d4a75ef SG	274
	275	/* this goes last */
	276	IORING_REGISTER_LAST
	277	};
c3a31e60 JA	278
	279	struct io_uring_files_update {
	280	__u32 offset;
1292e972 ES	281	__u32 resv;
1292e972 ES	282	__aligned_u64 /* __s32 * */ fds;
c3a31e60	283	};
edafccee	284
66f4af93 JA	285	#define IO_URING_OP_SUPPORTED (1U << 0)
	286
	287	struct io_uring_probe_op {
	288	__u8 op;
	289	__u8 resv;
	290	__u16 flags; /* IO_URING_OP_* flags */
	291	__u32 resv2;
	292	};
	293
	294	struct io_uring_probe {
	295	__u8 last_op; /* last opcode supported */
	296	__u8 ops_len; /* length of ops[] array below */
	297	__u16 resv;
	298	__u32 resv2[3];
	299	struct io_uring_probe_op ops[0];
	300	};
	301
21b55dbc SG	302	struct io_uring_restriction {
	303	__u16 opcode;
	304	union {
	305	__u8 register_op; /* IORING_RESTRICTION_REGISTER_OP */
	306	__u8 sqe_op; /* IORING_RESTRICTION_SQE_OP */
	307	__u8 sqe_flags; /* IORING_RESTRICTION_SQE_FLAGS_* */
	308	};
	309	__u8 resv;
	310	__u32 resv2[3];
	311	};
	312
	313	/*
	314	* io_uring_restriction->opcode values
	315	*/
	316	enum {
	317	/* Allow an io_uring_register(2) opcode */
	318	IORING_RESTRICTION_REGISTER_OP = 0,
	319
	320	/* Allow an sqe opcode */
	321	IORING_RESTRICTION_SQE_OP = 1,
	322
	323	/* Allow sqe flags */
	324	IORING_RESTRICTION_SQE_FLAGS_ALLOWED = 2,
	325
	326	/* Require sqe flags (these flags must be set on each submission) */
	327	IORING_RESTRICTION_SQE_FLAGS_REQUIRED = 3,
	328
	329	IORING_RESTRICTION_LAST
	330	};
	331
2b188cc1	332	#endif