svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.
socketcall(2)
SOCKETCALL(2) Linux Programmer's Manual SOCKETCALL(2)
NAME
socketcall - socket system calls
SYNOPSIS
#include <linux/net.h>
int socketcall(int call, unsigned long *args);
DESCRIPTION
socketcall() is a common kernel entry point for the socket system
calls. call determines which socket function to invoke. args points
to a block containing the actual arguments, which are passed through to
the appropriate call.
User programs should call the appropriate functions by their usual
names. Only standard library implementors and kernel hackers need to
know about socketcall().
tab(:); l l. call:Man page T{ SYS_SOCKET T}:T{ socket(2) T} T{
SYS_BIND T}:T{ bind(2) T} T{ SYS_CONNECT T}:T{ connect(2) T} T{
SYS_LISTEN T}:T{ listen(2) T} T{ SYS_ACCEPT T}:T{ accept(2) T} T{
SYS_GETSOCKNAME T}:T{ getsockname(2) T} T{ SYS_GETPEERNAME T}:T{ get‐
peername(2) T} T{ SYS_SOCKETPAIR T}:T{ socketpair(2) T} T{ SYS_SEND
T}:T{ send(2) T} T{ SYS_RECV T}:T{ recv(2) T} T{ SYS_SENDTO T}:T{
sendto(2) T} T{ SYS_RECVFROM T}:T{ recvfrom(2) T} T{ SYS_SHUTDOWN T}:T{
shutdown(2) T} T{ SYS_SETSOCKOPT T}:T{ setsockopt(2) T} T{ SYS_GETSOCK‐
OPT T}:T{ getsockopt(2) T} T{ SYS_SENDMSG T}:T{ sendmsg(2) T} T{
SYS_RECVMSG T}:T{ recvmsg(2) T} T{ SYS_ACCEPT4 T}:T{ accept4(2) T} T{
SYS_RECVMMSG T}:T{ recvmmsg(2) T} T{ SYS_SENDMMSG T}:T{ sendmmsg(2) T}
CONFORMING TO
This call is specific to Linux, and should not be used in programs
intended to be portable.
NOTES
On a some architectures—for example, x86-64 and ARM—there is no socket‐
call() system call; instead socket(2), accept(2), bind(2), and so on
really are implemented as separate system calls.
On x86-32, socketcall() was historically the only entry point for the
sockets API. However, starting in Linux 4.3, direct system calls are
provided on x86-32 for the sockets API. This facilitates the creation
of 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.
SEE ALSO
accept(2), bind(2), connect(2), getpeername(2), getsockname(2), get‐
sockopt(2), listen(2), recv(2), recvfrom(2), recvmsg(2), send(2),
sendmsg(2), sendto(2), setsockopt(2), shutdown(2), socket(2), socket‐
pair(2)
COLOPHON
This page is part of release 5.02 of the Linux man-pages project. A
description of the project, information about reporting bugs, and the
latest version of this page, can be found at
https://www.kernel.org/doc/man-pages/.
Linux 2017-09-15 SOCKETCALL(2)