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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | COLOPHON |
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io_uring_re...estrictions(3) liburing Manual io_uring_re...estrictions(3)
io_uring_register_restrictions - register restrictions with
io_uring
#include <liburing.h>
int io_uring_register_restrictions(struct io_uring *ring,
struct io_uring_restriction *res,
unsigned int nr_res);
The io_uring_register_restrictions(3) function registers
restrictions with the io_uring instance specified by ring. The
res argument is a pointer to an array of struct
io_uring_restriction of nr_res entries.
Restrictions allow limiting which opcodes, register operations, or
SQE flags are allowed on a ring. This can be used to sandbox
io_uring usage.
Restrictions can only be registered if the io_uring ring was
started in a disabled state (with IORING_SETUP_R_DISABLED
specified in the call to io_uring_setup(2)). All restrictions
must be registered in a single call before enabling the ring with
io_uring_enable_rings(3).
See io_uring_register(2) for a description of the
IORING_REGISTER_RESTRICTIONS operation and the restriction
structure.
Returns 0 on success. On error, a negative errno value is
returned.
io_uring_enable_rings(3), io_uring_register(2), io_uring_setup(2)
This page is part of the liburing (A library for io_uring)
project. Information about the project can be found at
⟨https://github.com/axboe/liburing⟩. If you have a bug report for
this manual page, send it to io-uring@vger.kernel.org. This page
was obtained from the project's upstream Git repository
⟨https://github.com/axboe/liburing⟩ on 2026-05-24. (At that time,
the date of the most recent commit that was found in the
repository was 2026-05-18.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
liburing-2.4 January 18, 2025io_uring_re...estrictions(3)
Pages that refer to this page: io_uring_register_restrictions(3), io_uring_setup_flags(7)
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HTML rendering created 2026-05-24 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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