added several system call hooks for future sockets implementation

sysdeps/unix/sysv/linux/sys/syscall.h

 /* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.
 
    The GNU C Library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.
 
    You should have received a copy of the GNU Lesser General Public
    License along with the GNU C Library; if not, write to the Free
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
 #ifndef _SYSCALL_H
 #define _SYSCALL_H      1
 
 /* This file should list the numbers of the system the system knows.
    But instead of duplicating this we use the information available
    from the kernel sources.  */
 #include <asm/unistd.h>
+#ifdef __i386__
+#  define __NR_accept           325
+#  define __NR_bind             326
+#  define __NR_listen           327
+#  define __NR_connect          328
+#  define __NR_send             329
+#  define __NR_sendto           330
+#  define __NR_sendmsg          331
+#  define __NR_recv             332
+#  define __NR_recvfrom         333
+#  define __NR_recvmsg          334
+#  define __NR_shutdown         335
+#  define __NR_getsockopt               336
+#  define __NR_setsockopt               337
+#  define __NR_getsockname              338
+#  define __NR_getpeername              339
+#  define __NR_socketpair               340
+#endif
 
 #ifndef _LIBC
 /* The Linux kernel header file defines macros `__NR_<name>', but some
    programs expect the traditional form `SYS_<name>'.  So in building libc
    we scan the kernel's list and produce <bits/syscall.h> with macros for
    all the `SYS_' names.  */
 # include <bits/syscall.h>
 #endif
 
 #endif