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NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | COLOPHON |
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io_uring_recvmsg_out(3) liburing Manual io_uring_recvmsg_out(3)
io_uring_recvmsg_out - access data from multishot recvmsg
#include <liburing.h>
struct io_uring_recvmsg_out *io_uring_recvmsg_validate(void *buf,
int buf_len,
struct msghdr *msgh);
void *io_uring_recvmsg_name(struct io_uring_recvmsg_out *o);
struct cmsghdr *io_uring_recvmsg_cmsg_firsthdr(struct io_uring_recvmsg_out *o,
struct msghdr *msgh);
struct cmsghdr *io_uring_recvmsg_cmsg_nexthdr(struct io_uring_recvmsg_out *o,
struct msghdr *msgh,
struct cmsghdr *cmsg);
void *io_uring_recvmsg_payload(struct io_uring_recvmsg_out *o,
struct msghdr *msgh);
unsigned int io_uring_recvmsg_payload_length(struct io_uring_recvmsg_out *o,
int buf_len,
struct msghdr *msgh);
These functions are used to access data in the payload delivered
by io_uring_prep_recvmsg_multishot(3).
msgh should point to the struct msghdr submitted with the request.
io_uring_recvmsg_validate(3) will validate a buffer delivered by
io_uring_prep_recvmsg_multishot(3) and extract the
io_uring_recvmsg_out if it is valid, returning a pointer to it or
else NULL.
The structure is defined as follows:
struct io_uring_recvmsg_out {
__u32 namelen; /* Name byte count as would have been populated
* by recvmsg(2) */
__u32 controllen; /* Control byte count */
__u32 payloadlen; /* Payload byte count as would have been returned
* by recvmsg(2) */
__u32 flags; /* Flags result as would have been populated
* by recvmsg(2) */
};
* io_uring_recvmsg_name(3)
returns a pointer to the name in the buffer.
* io_uring_recvmsg_cmsg_firsthdr(3)
returns a pointer to the first cmsg in the buffer, or NULL.
* io_uring_recvmsg_cmsg_nexthdr(3)
returns a pointer to the next cmsg in the buffer, or NULL.
* io_uring_recvmsg_payload(3)
returns a pointer to the payload in the buffer.
* io_uring_recvmsg_payload_length(3)
Calculates the usable payload length in bytes.
io_uring_prep_recvmsg_multishot(3)
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 2025-08-11. (At that time,
the date of the most recent commit that was found in the
repository was 2025-08-02.) 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-2.2 July 26, 2022 io_uring_recvmsg_out(3)
Pages that refer to this page: io_uring_prep_recvmsg(3), io_uring_prep_recvmsg_multishot(3)
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HTML rendering created 2025-09-06 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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