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-'\" t
-.\" Copyright (c) 1995 Michael Chastain (mec@shell.portal.com), 15 April 1995.
-.\"
-.\" SPDX-License-Identifier: GPL-2.0-or-later
-.\"
-.\" Modified Tue Oct 22 22:11:53 1996 by Eric S. Raymond <esr@thyrsus.com>
-.TH socketcall 2 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-socketcall \- socket system calls
-.SH LIBRARY
-Standard C library
-.RI ( libc ", " \-lc )
-.SH SYNOPSIS
-.nf
-.BR "#include <linux/net.h>" " /* Definition of " SYS_* " constants */"
-.BR "#include <sys/syscall.h>" " /* Definition of " SYS_socketcall " */"
-.B #include <unistd.h>
-.P
-.BI "int syscall(SYS_socketcall, int " call ", unsigned long *" args );
-.fi
-.P
-.IR Note :
-glibc provides no wrapper for
-.BR socketcall (),
-necessitating the use of
-.BR syscall (2).
-.SH DESCRIPTION
-.BR socketcall ()
-is a common kernel entry point for the socket system calls.
-.I call
-determines which socket function to invoke.
-.I args
-points to a block containing the actual arguments,
-which are passed through to the appropriate call.
-.P
-User programs should call the appropriate functions by their usual names.
-Only standard library implementors and kernel hackers need to know about
-.BR socketcall ().
-.P
-.TS
-tab(:);
-l l.
-\fIcall\fR:Man page
-T{
-.B SYS_SOCKET
-T}:T{
-.BR socket (2)
-T}
-T{
-.B SYS_BIND
-T}:T{
-.BR bind (2)
-T}
-T{
-.B SYS_CONNECT
-T}:T{
-.BR connect (2)
-T}
-T{
-.B SYS_LISTEN
-T}:T{
-.BR listen (2)
-T}
-T{
-.B SYS_ACCEPT
-T}:T{
-.BR accept (2)
-T}
-T{
-.B SYS_GETSOCKNAME
-T}:T{
-.BR getsockname (2)
-T}
-T{
-.B SYS_GETPEERNAME
-T}:T{
-.BR getpeername (2)
-T}
-T{
-.B SYS_SOCKETPAIR
-T}:T{
-.BR socketpair (2)
-T}
-T{
-.B SYS_SEND
-T}:T{
-.BR send (2)
-T}
-T{
-.B SYS_RECV
-T}:T{
-.BR recv (2)
-T}
-T{
-.B SYS_SENDTO
-T}:T{
-.BR sendto (2)
-T}
-T{
-.B SYS_RECVFROM
-T}:T{
-.BR recvfrom (2)
-T}
-T{
-.B SYS_SHUTDOWN
-T}:T{
-.BR shutdown (2)
-T}
-T{
-.B SYS_SETSOCKOPT
-T}:T{
-.BR setsockopt (2)
-T}
-T{
-.B SYS_GETSOCKOPT
-T}:T{
-.BR getsockopt (2)
-T}
-T{
-.B SYS_SENDMSG
-T}:T{
-.BR sendmsg (2)
-T}
-T{
-.B SYS_RECVMSG
-T}:T{
-.BR recvmsg (2)
-T}
-T{
-.B SYS_ACCEPT4
-T}:T{
-.BR accept4 (2)
-T}
-T{
-.B SYS_RECVMMSG
-T}:T{
-.BR recvmmsg (2)
-T}
-T{
-.B SYS_SENDMMSG
-T}:T{
-.BR sendmmsg (2)
-T}
-.TE
-.SH VERSIONS
-On some architectures\[em]for example, x86-64 and ARM\[em]there is no
-.BR socketcall ()
-system call; instead
-.BR socket (2),
-.BR accept (2),
-.BR bind (2),
-and so on really are implemented as separate system calls.
-.SH STANDARDS
-Linux.
-.P
-On x86-32,
-.BR socketcall ()
-was historically the only entry point for the sockets API.
-However, starting in Linux 4.3,
-.\" commit 9dea5dc921b5f4045a18c63eb92e84dc274d17eb
-direct system calls are provided on x86-32 for the sockets API.
-This facilitates the creation of
-.BR seccomp (2)
-filters that filter sockets system calls
-(for new user-space binaries that are compiled
-to use the new entry points)
-and also provides a (very) small performance improvement.
-.SH SEE ALSO
-.BR accept (2),
-.BR bind (2),
-.BR connect (2),
-.BR getpeername (2),
-.BR getsockname (2),
-.BR getsockopt (2),
-.BR listen (2),
-.BR recv (2),
-.BR recvfrom (2),
-.BR recvmsg (2),
-.BR send (2),
-.BR sendmsg (2),
-.BR sendto (2),
-.BR setsockopt (2),
-.BR shutdown (2),
-.BR socket (2),
-.BR socketpair (2)