/
githubmirror
/
liburing
Обзор
Документация
Войти
/
githubmirror
/
liburing
Код
Запросы
0
Пакеты
0
Релизы
0
Аналитика
Безопасность
master
man/io_uring_prep_cmd_sock.3
126 строк
3 KB
Petteri Räty
Fix io_uring_prep_cmd_sock man page file name
10 янв 2026, 20:09
10 янв 2026, 20:09
6ff5287
Код
Авторство
О чём код?
.\" Copyright (C) 2023 Breno Leitao <leitao@debian.org> .\" .\" SPDX-License-Identifier: LGPL-2.0-or-later .\" .TH io_uring_prep_cmd_sock 3 "July 27, 2023" "liburing-2.5" "liburing Manual" .SH NAME io_uring_prep_cmd_sock \- prepare a command request for a socket .SH SYNOPSIS .nf .B #include <liburing.h> .PP .BI "void io_uring_prep_cmd_sock(struct io_uring_sqe *" sqe "," .BI " int " cmd_op "," .BI " int " fd "," .BI " int " level "," .BI " int " optname "," .BI " void " *optval "," .BI " int " optlen ");" .fi .SH DESCRIPTION .PP The .BR io_uring_prep_cmd_sock (3) function prepares an cmd request for a socket. The submission queue entry .I sqe is setup to use the socket file descriptor pointed to by .I fd to start an command operation defined by .I cmd_op. This is a generic function, and each command has their own individual .I level, optname, optval values. The optlen defines the size pointed by .I optval. .SH Available commands .TP .B SOCKET_URING_OP_SIOCINQ Returns the amount of queued unread data in the receive buffer. The socket must not be in LISTEN state, otherwise an error .B -EINVAL is returned in the CQE .I res field. The following arguments are not used for this command .I level, optname, optval and .I optlen. Negative return value means an error. For more information about this command, please check .BR unix(7). Available since 6.7. .TP .B SOCKET_URING_OP_SIOCOUTQ Returns the amount of unsent data in the socket send queue. The socket must not be in LISTEN state, otherwise an error .B -EINVAL is returned in the CQE .I res. field. The following arguments are not used for this command .I level, optname, optval and .I optlen. Negative return value means an error. For more information about this command, please check .BR unix(7). .TP .B SOCKET_URING_OP_GETSOCKOPT Command to get options for the socket referred to by the socket file descriptor .I fd. The arguments are similar to the .BR getsockopt(2) system call. The .BR SOCKET_URING_OP_GETSOCKOPT command is limited to .BR SOL_SOCKET .I level. Differently from the .BR getsockopt(2) system call, the updated .I optlen value is returned in the CQE .I res field, on success. On failure, the CQE .I res contains a negative error number. .TP .B SOCKET_URING_OP_SETSOCKOPT Command to set options for the socket referred to by the socket file descriptor .I fd. The arguments are similar to the .BR setsockopt(2) system call. Available since 6.7. .SH NOTES The memory block pointed by .I optval needs to be valid/live until the CQE returns. .SH RETURN VALUE Dependent on the command. .SH ERRORS The CQE .I res field will contain the result of the operation. .SH SEE ALSO .BR io_uring_get_sqe (3), .BR io_uring_submit (3), .BR io_uring_register (2), .BR unix (7)