socketcall man page on Kali

socketcall man page on Kali

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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().

       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)

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 4.14 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)

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