Section (2) socketcall
socketcall — socket system calls
|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
This call is specific to Linux, and should not be used in programs intended to be portable.
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)
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Copyright (c) 1995 Michael Chastain (mecshell.portal.com), 15 April 1995.
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Modified Tue Oct 22 22:11:53 1996 by Eric S. Raymond <esrthyrsus.com>