[RFC v1 0/3] introduce io_uring querying

[Pavel Begunkov <asml.silence@gmail.com>]

Introduce a versatile interface to query auxilary io_uring parameters.
It will be used to close a couple of API gaps, but in this series can
only tell what request and register opcodes, features and setup flags
are available. It'll replace IORING_REGISTER_PROBE  but with a much
more convenient interface. Patch 3 for API description.

Can be tested with:

https://github.com/isilence/liburing.git io_uring/query-v1

Note: RFC as I've got a last minute uapi adjustment I want to try.

Pavel Begunkov (3):
  io_uring: add helper for *REGISTER_SEND_MSG_RING
  io_uring: add macro for features and valid setup flags
  io_uring: introduce io_uring querying

 include/uapi/linux/io_uring.h       |  3 ++
 include/uapi/linux/io_uring/query.h | 40 ++++++++++++++
 io_uring/Makefile                   |  2 +-
 io_uring/io_uring.c                 | 21 +-------
 io_uring/io_uring.h                 | 20 +++++++
 io_uring/query.c                    | 84 +++++++++++++++++++++++++++++
 io_uring/query.h                    |  9 ++++
 io_uring/register.c                 | 39 +++++++++-----
 8 files changed, 184 insertions(+), 34 deletions(-)
 create mode 100644 include/uapi/linux/io_uring/query.h
 create mode 100644 io_uring/query.c
 create mode 100644 io_uring/query.h

-- 
2.49.0