|
NAME | SYNOPSIS | DESCRIPTION | CONFORMING TO | NOTES | SEE ALSO | COLOPHON |
SOCKETCALL(2) Linux Programmer's Manual SOCKETCALL(2)
socketcall - socket system calls
#include <linux/net.h>
int socketcall(int call, unsigned long *args);
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().
call Man page
SYS_SOCKET socket(2)
SYS_BIND bind(2)
SYS_CONNECT connect(2)
SYS_LISTEN listen(2)
SYS_ACCEPT accept(2)
SYS_GETSOCKNAME getsockname(2)
SYS_GETPEERNAME getpeername(2)
SYS_SOCKETPAIR socketpair(2)
SYS_SEND send(2)
SYS_RECV recv(2)
SYS_SENDTO sendto(2)
SYS_RECVFROM recvfrom(2)
SYS_SHUTDOWN shutdown(2)
SYS_SETSOCKOPT setsockopt(2)
SYS_GETSOCKOPT getsockopt(2)
SYS_SENDMSG sendmsg(2)
SYS_RECVMSG recvmsg(2)
SYS_ACCEPT4 accept4(2)
SYS_RECVMMSG recvmmsg(2)
SYS_SENDMMSG sendmmsg(2)
This call is specific to Linux, and should not be used in programs
intended to be portable.
On a some architectures—for example, x86-64 and ARM—there is no
socketcall() 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.
accept(2), bind(2), connect(2), getpeername(2), getsockname(2),
getsockopt(2), listen(2), recv(2), recvfrom(2), recvmsg(2), send(2),
sendmsg(2), sendto(2), setsockopt(2), shutdown(2), socket(2),
socketpair(2)
This page is part of release 4.12 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 2017-05-03 SOCKETCALL(2)
Pages that refer to this page: syscalls(2), seccomp_syscall_resolve_name(3)