Majorly rework to also cope with architectures which do not use

the socketcall system call, but instead implement each fundamental
networking function directly as a system call.
 -Erik

libc/inet/socketcalls.c

@@ -2,9 +2,9 @@
 #include <features.h>
 #include <errno.h>
 #include <syscall.h>
-#include <sys/socket.h>
-
 
+#ifdef __NR_socketcall
+#include <sys/socket.h>
 extern int socketcall(int call, unsigned long *args);
 
 /* Various socketcall numbers */
@@ -25,9 +25,16 @@ extern int socketcall(int call, unsigned long *args);
 #define SYS_GETSOCKOPT  15
 #define SYS_SENDMSG     16
 #define SYS_RECVMSG     17
+#endif
 
 
 #ifdef L_accept
+#include <sys/socket.h>
+#ifdef __NR_accept
+#define __NR_accept	__NR___libc_accept
+_syscall3(int, __libc_accept, int, call, struct sockaddr *, addr, socklen_t *,addrlen);
+weak_alias(__libc_accept, accept);
+#else
 int __libc_accept(int s, struct sockaddr *addr, socklen_t * addrlen)
 {
 	unsigned long args[3];
@@ -37,10 +44,15 @@ int __libc_accept(int s, struct sockaddr *addr, socklen_t * addrlen)
 	args[2] = (unsigned long) addrlen;
 	return socketcall(SYS_ACCEPT, args);
 }
+#endif
 weak_alias(__libc_accept, accept);
 #endif
 
 #ifdef L_bind
+#include <sys/socket.h>
+#ifdef __NR_bind
+_syscall3(int, bind, int, sockfd, const struct sockaddr *, myaddr, socklen_t, addrlen);
+#else
 int bind(int sockfd, const struct sockaddr *myaddr, socklen_t addrlen)
 {
 	unsigned long args[3];
@@ -51,8 +63,14 @@ int bind(int sockfd, const struct sockaddr *myaddr, socklen_t addrlen)
 	return socketcall(SYS_BIND, args);
 }
 #endif
+#endif
 
 #ifdef L_connect
+#include <sys/socket.h>
+#ifdef __NR_connect
+#define __NR_connect __NR___libc_connect
+_syscall3(int, __libc_connect, int, sockfd, const struct sockaddr *, saddr, socklen_t, addrlen);
+#else
 int __libc_connect(int sockfd, const struct sockaddr *saddr, socklen_t addrlen)
 {
 	unsigned long args[3];
@@ -62,10 +80,15 @@ int __libc_connect(int sockfd, const struct sockaddr *saddr, socklen_t addrlen)
 	args[2] = addrlen;
 	return socketcall(SYS_CONNECT, args);
 }
+#endif
 weak_alias(__libc_connect, connect);
 #endif
 
 #ifdef L_getpeername
+#include <sys/socket.h>
+#ifdef __NR_getpeername
+_syscall3(int, getpeername, int, sockfd, struct, sockaddr *, addr, socklen_t *,paddrlen);
+#else
 int getpeername(int sockfd, struct sockaddr *addr, socklen_t * paddrlen)
 {
 	unsigned long args[3];
@@ -76,8 +99,13 @@ int getpeername(int sockfd, struct sockaddr *addr, socklen_t * paddrlen)
 	return socketcall(SYS_GETPEERNAME, args);
 }
 #endif
+#endif
 
 #ifdef L_getsockname
+#include <sys/socket.h>
+#ifdef __NR_getsockname
+_syscall3(int, getsockname, int, sockfd, struct, sockaddr *, addr, socklen_t *,paddrlen);
+#else
 int getsockname(int sockfd, struct sockaddr *addr, socklen_t * paddrlen)
 {
 	unsigned long args[3];
@@ -88,8 +116,13 @@ int getsockname(int sockfd, struct sockaddr *addr, socklen_t * paddrlen)
 	return socketcall(SYS_GETSOCKNAME, args);
 }
 #endif
+#endif
 
 #ifdef L_getsockopt
+#include <sys/socket.h>
+#ifdef __NR_getsockopt
+_syscall5(int, getsockopt, int, fd, int, level, int, optname, __ptr_t, optval, socklen_t *, optlen);
+#else
 int getsockopt(int fd, int level, int optname, __ptr_t optval,
 		   socklen_t * optlen)
 {
@@ -103,8 +136,13 @@ int getsockopt(int fd, int level, int optname, __ptr_t optval,
 	return (socketcall(SYS_GETSOCKOPT, args));
 }
 #endif
+#endif
 
 #ifdef L_listen
+#include <sys/socket.h>
+#ifdef __NR_listen
+_syscall2(int, listen, int, sockfd, int, backlog);
+#else
 int listen(int sockfd, int backlog)
 {
 	unsigned long args[2];
@@ -114,8 +152,14 @@ int listen(int sockfd, int backlog)
 	return socketcall(SYS_LISTEN, args);
 }
 #endif
+#endif
 
 #ifdef L_recv
+#include <sys/socket.h>
+#ifdef __NR_recv
+#define __NR_recv __NR___libc_recv
+_syscall4(int, __libc_recv, int, sockfd, __ptr_t, buffer, size_t, len, int, flags);
+#else
 /* recv, recvfrom added by bir7@leland.stanford.edu */
 int __libc_recv(int sockfd, __ptr_t buffer, size_t len, int flags)
 {
@@ -127,10 +171,17 @@ int __libc_recv(int sockfd, __ptr_t buffer, size_t len, int flags)
 	args[3] = flags;
 	return (socketcall(SYS_RECV, args));
 }
+#endif
 weak_alias(__libc_recv, recv);
 #endif
 
 #ifdef L_recvfrom
+#include <sys/socket.h>
+#ifdef __NR_recvfrom
+#define __NR_recvfrom __NR___libc_recvfrom
+_syscall6(int, __libc_recvfrom, int, sockfd, __ptr_t, buffer, size_t, len, int, flags, 
+	struct sockaddr *, to, socklen_t *, tolen);
+#else
 /* recv, recvfrom added by bir7@leland.stanford.edu */
 int __libc_recvfrom(int sockfd, __ptr_t buffer, size_t len, int flags,
 		 struct sockaddr *to, socklen_t * tolen)
@@ -145,10 +196,16 @@ int __libc_recvfrom(int sockfd, __ptr_t buffer, size_t len, int flags,
 	args[5] = (unsigned long) tolen;
 	return (socketcall(SYS_RECVFROM, args));
 }
+#endif
 weak_alias(__libc_recvfrom, recvfrom);
 #endif
 
 #ifdef L_recvmsg
+#include <sys/socket.h>
+#ifdef __NR_recvmsg
+#define __NR_recvmsg __NR___libc_recvmsg
+_syscall3(int, __libc_recvmsg, int, sockfd, struct msghdr *, msg, int, flags);
+#else
 int __libc_recvmsg(int sockfd, struct msghdr *msg, int flags)
 {
 	unsigned long args[3];
@@ -158,10 +215,16 @@ int __libc_recvmsg(int sockfd, struct msghdr *msg, int flags)
 	args[2] = flags;
 	return (socketcall(SYS_RECVMSG, args));
 }
+#endif
 weak_alias(__libc_recvmsg, recvmsg);
 #endif
 
 #ifdef L_send
+#include <sys/socket.h>
+#ifdef __NR_send
+#define __NR_send __NR___libc_send
+_syscall4(int, __libc_send, int, sockfd, const void *, buffer, size_t, len, int, flags);
+#else
 /* send, sendto added by bir7@leland.stanford.edu */
 int __libc_send(int sockfd, const void *buffer, size_t len, int flags)
 {
@@ -173,10 +236,16 @@ int __libc_send(int sockfd, const void *buffer, size_t len, int flags)
 	args[3] = flags;
 	return (socketcall(SYS_SEND, args));
 }
+#endif
 weak_alias(__libc_send, send);
 #endif
 
 #ifdef L_sendmsg
+#include <sys/socket.h>
+#ifdef __NR_sendmsg
+#define __NR_sendmsg __NR___libc_sendmsg
+_syscall3(int, __libc_sendmsg, int, sockfd, const struct msghdr *, msg, int, flags);
+#else
 int __libc_sendmsg(int sockfd, const struct msghdr *msg, int flags)
 {
 	unsigned long args[3];
@@ -186,10 +255,17 @@ int __libc_sendmsg(int sockfd, const struct msghdr *msg, int flags)
 	args[2] = flags;
 	return (socketcall(SYS_SENDMSG, args));
 }
+#endif
 weak_alias(__libc_sendmsg, sendmsg);
 #endif
 
 #ifdef L_sendto
+#include <sys/socket.h>
+#ifdef __NR_sendto
+#define __NR_sendto __NR___libc_sendto
+_syscall6(int, __libc_sendto, int, sockfd, const void *, buffer, size_t, len, 
+	int, flags, const struct sockaddr *, to, socklen_t, tolen);
+#else
 /* send, sendto added by bir7@leland.stanford.edu */
 int __libc_sendto(int sockfd, const void *buffer, size_t len, int flags,
 	   const struct sockaddr *to, socklen_t tolen)
@@ -204,10 +280,15 @@ int __libc_sendto(int sockfd, const void *buffer, size_t len, int flags,
 	args[5] = tolen;
 	return (socketcall(SYS_SENDTO, args));
 }
+#endif
 weak_alias(__libc_sendto, sendto);
 #endif
 
 #ifdef L_setsockopt
+#include <sys/socket.h>
+#ifdef __NR_setsockopt
+_syscall5(int, setsockopt, int, fd, int, level, int, optname, const void *, optval, socklen_t, optlen);
+#else
 /* [sg]etsockoptions by bir7@leland.stanford.edu */
 int setsockopt(int fd, int level, int optname, const void *optval,
 		   socklen_t optlen)
@@ -222,8 +303,13 @@ int setsockopt(int fd, int level, int optname, const void *optval,
 	return (socketcall(SYS_SETSOCKOPT, args));
 }
 #endif
+#endif
 
 #ifdef L_shutdown
+#include <sys/socket.h>
+#ifdef __NR_shutdown
+_syscall2(int, shutdown, int, sockfd, int, how);
+#else
 /* shutdown by bir7@leland.stanford.edu */
 int shutdown(int sockfd, int how)
 {
@@ -234,8 +320,13 @@ int shutdown(int sockfd, int how)
 	return (socketcall(SYS_SHUTDOWN, args));
 }
 #endif
+#endif
 
 #ifdef L_socket
+#include <sys/socket.h>
+#ifdef __NR_socket
+_syscall3(int, socket, int, family, int, type, int, protocol);
+#else
 int socket(int family, int type, int protocol)
 {
 	unsigned long args[3];
@@ -246,8 +337,13 @@ int socket(int family, int type, int protocol)
 	return socketcall(SYS_SOCKET, args);
 }
 #endif
+#endif
 
 #ifdef L_socketpair
+#include <sys/socket.h>
+#ifdef __NR_socketpair
+_syscall4(int, socketpair, int, family, int, type, int, protocol, int, sockvec[2]);
+#else
 int socketpair(int family, int type, int protocol, int sockvec[2])
 {
 	unsigned long args[4];
@@ -259,4 +355,5 @@ int socketpair(int family, int type, int protocol, int sockvec[2])
 	return socketcall(SYS_SOCKETPAIR, args);
 }
 #endif
+#endif