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6a77267d97
It's useful to know which query opcodes are available. Extend the structure and return that. It's a trivial change, and even though it can be painlessly extended later, it'd still require adding a v2 of the structure. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
45 lines
1.0 KiB
C
45 lines
1.0 KiB
C
/* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) OR MIT */
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/*
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* Header file for the io_uring query interface.
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*/
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#ifndef LINUX_IO_URING_QUERY_H
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#define LINUX_IO_URING_QUERY_H
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#include <linux/types.h>
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struct io_uring_query_hdr {
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__u64 next_entry;
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__u64 query_data;
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__u32 query_op;
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__u32 size;
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__s32 result;
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__u32 __resv[3];
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};
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enum {
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IO_URING_QUERY_OPCODES = 0,
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__IO_URING_QUERY_MAX,
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};
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/* Doesn't require a ring */
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struct io_uring_query_opcode {
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/* The number of supported IORING_OP_* opcodes */
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__u32 nr_request_opcodes;
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/* The number of supported IORING_[UN]REGISTER_* opcodes */
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__u32 nr_register_opcodes;
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/* Bitmask of all supported IORING_FEAT_* flags */
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__u64 feature_flags;
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/* Bitmask of all supported IORING_SETUP_* flags */
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__u64 ring_setup_flags;
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/* Bitmask of all supported IORING_ENTER_** flags */
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__u64 enter_flags;
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/* Bitmask of all supported IOSQE_* flags */
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__u64 sqe_flags;
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/* The number of available query opcodes */
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__u32 nr_query_opcodes;
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__u32 __pad;
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};
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#endif
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