initial import of NetBSD tree

1 files changed, 704 insertions, 0 deletions

diff --git a/sys/compat/linux/linux_socket.c b/sys/compat/linux/linux_socket.c
new file mode 100644
index 00000000000..664a246f99e
--- /dev/null
+++ b/sys/compat/linux/linux_socket.c
@@ -0,0 +1,704 @@
+/*	$NetBSD: linux_socket.c,v 1.12 1995/10/07 06:27:13 mycroft Exp $	*/
+
+/*
+ * Copyright (c) 1995 Frank van der Linden
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed for the NetBSD Project
+ *      by Frank van der Linden
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/systm.h>
+#include <sys/buf.h>
+#include <sys/malloc.h>
+#include <sys/ioctl.h>
+#include <sys/tty.h>
+#include <sys/file.h>
+#include <sys/filedesc.h>
+#include <sys/select.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+#include <net/if.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <sys/mount.h>
+#include <sys/proc.h>
+#include <sys/vnode.h>
+#include <sys/device.h>
+
+#include <sys/syscallargs.h>
+
+#include <compat/linux/linux_types.h>
+#include <compat/linux/linux_util.h>
+#include <compat/linux/linux_signal.h>
+#include <compat/linux/linux_syscallargs.h>
+#include <compat/linux/linux_ioctl.h>
+#include <compat/linux/linux_socket.h>
+#include <compat/linux/linux_socketcall.h>
+#include <compat/linux/linux_sockio.h>
+
+/*
+ * All the calls in this file are entered via one common system
+ * call in Linux, represented here by linux_socketcall()
+ * Arguments for the various calls are on the user stack. A pointer
+ * to them is the only thing that is passed. It is up to the various
+ * calls to copy them in themselves. To make it look better, they
+ * are copied to structures.
+ */
+
+/*
+ * Convert between Linux and BSD socket domain values
+ */
+int
+linux_to_bsd_domain(ldom)
+	int ldom;
+{
+
+	switch (ldom) {
+	case LINUX_AF_UNSPEC:
+		return AF_UNSPEC;
+	case LINUX_AF_UNIX:
+		return AF_LOCAL;
+	case LINUX_AF_INET:
+		return AF_INET;
+	case LINUX_AF_AX25:
+		return AF_CCITT;
+	case LINUX_AF_IPX:
+		return AF_IPX;
+	case LINUX_AF_APPLETALK:
+		return AF_APPLETALK;
+	default:
+		return -1;
+	}
+}
+
+int
+linux_socket(p, uap, retval)
+	struct proc *p;
+	struct linux_socket_args /* {
+		syscallarg(int)	domain;
+		syscallarg(int)	type;
+		syscallarg(int) protocol;
+	} */ *uap;
+	register_t *retval;
+{
+	struct linux_socket_args lsa;
+	struct sys_socket_args bsa;
+	int error;
+
+	if ((error = copyin((caddr_t) uap, (caddr_t) &lsa, sizeof lsa)))
+		return error;
+
+	SCARG(&bsa, protocol) = lsa.protocol;
+	SCARG(&bsa, type) = lsa.type;
+	SCARG(&bsa, domain) = linux_to_bsd_domain(lsa.domain);
+	if (SCARG(&bsa, domain) == -1)
+		return EINVAL;
+	return sys_socket(p, &bsa, retval);
+}
+
+int
+linux_bind(p, uap, retval)
+	struct proc *p;
+	struct linux_bind_args /* {
+		syscallarg(int)	s;
+		syscallarg(struct sockaddr *) name;
+		syscallarg(int)	namelen;
+	} */ *uap;
+	register_t *retval;
+{
+	struct linux_bind_args lba;
+	struct sys_bind_args bba;
+	int error;
+
+	if ((error = copyin((caddr_t) uap, (caddr_t) &lba, sizeof lba)))
+		return error;
+
+	SCARG(&bba, s) = lba.s;
+	SCARG(&bba, name) = (caddr_t) lba.name;
+	SCARG(&bba, namelen) = lba.namelen;
+
+	return sys_bind(p, &bba, retval);
+}
+
+int
+linux_connect(p, uap, retval)
+	struct proc *p;
+	struct linux_connect_args /* {
+		syscallarg(int)	s;
+		syscallarg(struct sockaddr *) name;
+		syscallarg(int)	namelen;
+	} */ *uap;
+	register_t *retval;
+{
+	struct linux_connect_args lca;
+	struct sys_connect_args bca;
+	int error;
+
+	if ((error = copyin((caddr_t) uap, (caddr_t) &lca, sizeof lca)))
+		return error;
+
+	SCARG(&bca, s) = lca.s;
+	SCARG(&bca, name) = (caddr_t) lca.name;
+	SCARG(&bca, namelen) = lca.namelen;
+
+	return sys_connect(p, &bca, retval);
+}
+
+int
+linux_listen(p, uap, retval)
+	struct proc *p;
+	struct linux_listen_args /* {
+		syscallarg(int) s;
+		syscallarg(int) backlog;
+	} */ *uap;
+	register_t *retval;
+{
+	struct linux_listen_args lla;
+	struct sys_listen_args bla;
+	int error;
+
+	if ((error = copyin((caddr_t) uap, (caddr_t) &lla, sizeof lla)))
+		return error;
+
+	SCARG(&bla, s) = lla.s;
+	SCARG(&bla, backlog) = lla.backlog;
+
+	return sys_listen(p, &bla, retval);
+}
+
+int
+linux_accept(p, uap, retval)
+	struct proc *p;
+	struct linux_accept_args /* {
+		syscallarg(int) s;
+		syscallarg(struct sockaddr *) addr;
+		syscallarg(int *) namelen;
+	} */ *uap;
+	register_t *retval;
+{
+	struct linux_accept_args laa;
+	struct compat_43_sys_accept_args baa;
+	int error;
+
+	if ((error = copyin((caddr_t) uap, (caddr_t) &laa, sizeof laa)))
+		return error;
+
+	SCARG(&baa, s) = laa.s;
+	SCARG(&baa, name) = (caddr_t) laa.addr;
+	SCARG(&baa, anamelen) = laa.namelen;
+
+	return compat_43_sys_accept(p, &baa, retval);
+}
+
+int
+linux_getsockname(p, uap, retval)
+	struct proc *p;
+	struct linux_getsockname_args /* {
+		syscallarg(int) s;
+		syscallarg(struct sockaddr *) addr;
+		syscallarg(int *) namelen;
+	} */ *uap;
+	register_t *retval;
+{
+	struct linux_getsockname_args lga;
+	struct compat_43_sys_getsockname_args bga;
+	int error;
+
+	if ((error = copyin((caddr_t) uap, (caddr_t) &lga, sizeof lga)))
+		return error;
+
+	SCARG(&bga, fdec) = lga.s;
+	SCARG(&bga, asa) = (caddr_t) lga.addr;
+	SCARG(&bga, alen) = lga.namelen;
+
+	return compat_43_sys_getsockname(p, &bga, retval);
+}
+
+int
+linux_getpeername(p, uap, retval)
+	struct proc *p;
+	struct linux_getpeername_args /* {
+		syscallarg(int) s;
+		syscallarg(struct sockaddr *) addr;
+		syscallarg(int *) namelen;
+	} */ *uap;
+	register_t *retval;
+{
+	struct linux_getpeername_args lga;
+	struct compat_43_sys_getpeername_args bga;
+	int error;
+
+	if ((error = copyin((caddr_t) uap, (caddr_t) &lga, sizeof lga)))
+		return error;
+
+	SCARG(&bga, fdes) = lga.s;
+	SCARG(&bga, asa) = (caddr_t) lga.addr;
+	SCARG(&bga, alen) = lga.namelen;
+
+	return compat_43_sys_getpeername(p, &bga, retval);
+}
+
+int
+linux_socketpair(p, uap, retval)
+	struct proc *p;
+	struct linux_socketpair_args /* {
+		syscallarg(int) domain;
+		syscallarg(int) type;
+		syscallarg(int) protocol;
+		syscallarg(int *) rsv;
+	} */ *uap;
+	register_t *retval;
+{
+	struct linux_socketpair_args lsa;
+	struct sys_socketpair_args bsa;
+	int error;
+
+	if ((error = copyin((caddr_t) uap, &lsa, sizeof lsa)))
+		return error;
+
+	SCARG(&bsa, domain) = linux_to_bsd_domain(lsa.domain);
+	if (SCARG(&bsa, domain) == -1)
+		return EINVAL;
+	SCARG(&bsa, type) = lsa.type;
+	SCARG(&bsa, protocol) = lsa.protocol;
+	SCARG(&bsa, rsv) = lsa.rsv;
+
+	return sys_socketpair(p, &bsa, retval);
+}
+
+int
+linux_send(p, uap, retval)
+	struct proc *p;
+	struct linux_send_args /* {
+		syscallarg(int) s;
+		syscallarg(void *) msg;
+		syscallarg(int) len;
+		syscallarg(int) flags;
+	} */ *uap;
+	register_t *retval;
+{
+	struct linux_send_args lsa;
+	struct compat_43_sys_send_args bsa;
+	int error;
+
+	if ((error = copyin((caddr_t) uap, (caddr_t) &lsa, sizeof lsa)))
+		return error;
+
+	SCARG(&bsa, s) = lsa.s;
+	SCARG(&bsa, buf) = lsa.msg;
+	SCARG(&bsa, len) = lsa.len;
+	SCARG(&bsa, flags) = lsa.flags;
+
+	return compat_43_sys_send(p, &bsa, retval);
+}
+
+int
+linux_recv(p, uap, retval)
+	struct proc *p;
+	struct linux_recv_args /* {
+		syscallarg(int) s;
+		syscallarg(void *) msg;
+		syscallarg(int) len;
+		syscallarg(int) flags;
+	} */ *uap;
+	register_t *retval;
+{
+	struct linux_recv_args lra;
+	struct compat_43_sys_recv_args bra;
+	int error;
+
+	if ((error = copyin((caddr_t) uap, (caddr_t) &lra, sizeof lra)))
+		return error;
+
+	SCARG(&bra, s) = lra.s;
+	SCARG(&bra, buf) = lra.msg;
+	SCARG(&bra, len) = lra.len;
+	SCARG(&bra, flags) = lra.flags;
+
+	return compat_43_sys_recv(p, &bra, retval);
+}
+
+int
+linux_sendto(p, uap, retval)
+	struct proc *p;
+	struct linux_sendto_args /* {
+		syscallarg(int) s;
+		syscallarg(void *) msg;
+		syscallarg(int) len;
+		syscallarg(int) flags;
+		syscallarg(sockaddr *) to;
+		syscallarg(int) tolen;
+	} */ *uap;
+	register_t *retval;
+{
+	struct linux_sendto_args lsa;
+	struct sys_sendto_args bsa;
+	int error;
+
+	if ((error = copyin((caddr_t) uap, (caddr_t) &lsa, sizeof lsa)))
+		return error;
+
+	SCARG(&bsa, s) = lsa.s;
+	SCARG(&bsa, buf) = lsa.msg;
+	SCARG(&bsa, len) = lsa.len;
+	SCARG(&bsa, flags) = lsa.flags;
+	SCARG(&bsa, to) = (caddr_t) lsa.to;
+	SCARG(&bsa, tolen) = lsa.tolen;
+
+	return sys_sendto(p, &bsa, retval);
+}
+
+int
+linux_recvfrom(p, uap, retval)
+	struct proc *p;
+	struct linux_recvfrom_args /* {
+		syscallarg(int) s;
+		syscallarg(void *) buf;
+		syscallarg(int) len;
+		syscallarg(int) flags;
+		syscallarg(struct sockaddr *) from;
+		syscallarg(int *) fromlen;
+	} */ *uap;
+	register_t *retval;
+{
+	struct linux_recvfrom_args lra;
+	struct compat_43_sys_recvfrom_args bra;
+	int error;
+
+	if ((error = copyin((caddr_t) uap, (caddr_t) &lra, sizeof lra)))
+		return error;
+
+	SCARG(&bra, s) = lra.s;
+	SCARG(&bra, buf) = lra.buf;
+	SCARG(&bra, len) = lra.len;
+	SCARG(&bra, flags) = lra.flags;
+	SCARG(&bra, from) = (caddr_t) lra.from;
+	SCARG(&bra, fromlenaddr) = lra.fromlen;
+
+	return compat_43_sys_recvfrom(p, &bra, retval);
+}
+
+int
+linux_shutdown(p, uap, retval)
+	struct proc *p;
+	struct linux_shutdown_args /* {
+		syscallarg(int) s;
+		syscallarg(int) how;
+	} */ *uap;
+	register_t *retval;
+{
+	struct linux_shutdown_args lsa;
+	struct sys_shutdown_args bsa;
+	int error;
+
+	if ((error = copyin((caddr_t) uap, (caddr_t) &lsa, sizeof lsa)))
+		return error;
+
+	SCARG(&bsa, s) = lsa.s;
+	SCARG(&bsa, how) = lsa.how;
+
+	return sys_shutdown(p, &bsa, retval);
+}
+
+/*
+ * Convert socket option level from Linux to NetBSD value. Only SOL_SOCKET
+ * is different, the rest matches IPPROTO_* on both systems.
+ */
+int
+linux_to_bsd_sopt_level(llevel)
+	int llevel;
+{
+
+	switch (llevel) {
+	case LINUX_SOL_SOCKET:
+		return SOL_SOCKET;
+	case LINUX_SOL_IP:
+		return IPPROTO_IP;
+	case LINUX_SOL_TCP:
+		return IPPROTO_TCP;
+	case LINUX_SOL_UDP:
+		return IPPROTO_UDP;
+	default:
+		return -1;
+	}
+}
+
+/*
+ * Convert Linux socket level socket option numbers to NetBSD values.
+ */
+int
+linux_to_bsd_so_sockopt(lopt)
+	int lopt;
+{
+
+	switch (lopt) {
+	case LINUX_SO_DEBUG:
+		return SO_DEBUG;
+	case LINUX_SO_REUSEADDR:
+		return SO_REUSEADDR;
+	case LINUX_SO_TYPE:
+		return SO_TYPE;
+	case LINUX_SO_ERROR:
+		return SO_ERROR;
+	case LINUX_SO_DONTROUTE:
+		return SO_DONTROUTE;
+	case LINUX_SO_BROADCAST:
+		return SO_BROADCAST;
+	case LINUX_SO_SNDBUF:
+		return SO_SNDBUF;
+	case LINUX_SO_RCVBUF:
+		return SO_RCVBUF;
+	case LINUX_SO_KEEPALIVE:
+		return SO_KEEPALIVE;
+	case LINUX_SO_OOBINLINE:
+		return SO_OOBINLINE;
+	case LINUX_SO_LINGER:
+		return SO_LINGER;
+	case LINUX_SO_PRIORITY:
+	case LINUX_SO_NO_CHECK:
+	default:
+		return -1;
+	}
+}
+
+/*
+ * Convert Linux IP level socket option number to NetBSD values.
+ */
+int
+linux_to_bsd_ip_sockopt(lopt)
+	int lopt;
+{
+
+	switch (lopt) {
+	case LINUX_IP_TOS:
+		return IP_TOS;
+	case LINUX_IP_TTL:
+		return IP_TTL;
+	case LINUX_IP_MULTICAST_TTL:
+		return IP_MULTICAST_TTL;
+	case LINUX_IP_MULTICAST_LOOP:
+		return IP_MULTICAST_LOOP;
+	case LINUX_IP_MULTICAST_IF:
+		return IP_MULTICAST_IF;
+	case LINUX_IP_ADD_MEMBERSHIP:
+		return IP_ADD_MEMBERSHIP;
+	case LINUX_IP_DROP_MEMBERSHIP:
+		return IP_DROP_MEMBERSHIP;
+	default:
+		return -1;
+	}
+}
+
+/*
+ * Convert Linux TCP level socket option number to NetBSD values.
+ */
+int
+linux_to_bsd_tcp_sockopt(lopt)
+	int lopt;
+{
+
+	switch (lopt) {
+	case LINUX_TCP_NODELAY:
+		return TCP_NODELAY;
+	case LINUX_TCP_MAXSEG:
+		return TCP_MAXSEG;
+	default:
+		return -1;
+	}
+}
+
+/*
+ * Convert Linux UDP level socket option number to NetBSD values.
+ */
+int
+linux_to_bsd_udp_sockopt(lopt)
+	int lopt;
+{
+
+	switch (lopt) {
+	default:
+		return -1;
+	}
+}
+
+/*
+ * Another reasonably straightforward function: setsockopt(2).
+ * The level and option numbers are converted; the values passed
+ * are not (yet) converted, the ones currently implemented don't
+ * need conversion, as they are the same on both systems.
+ */
+int
+linux_setsockopt(p, uap, retval)
+	struct proc *p;
+	struct linux_setsockopt_args /* {
+		syscallarg(int) s;
+		syscallarg(int) level;
+		syscallarg(int) optname;
+		syscallarg(void *) optval;
+		syscallarg(int) optlen;
+	} */ *uap;
+	register_t *retval;
+{
+	struct linux_setsockopt_args lsa;
+	struct sys_setsockopt_args bsa;
+	int error, name;
+
+	if ((error = copyin((caddr_t) uap, (caddr_t) &lsa, sizeof lsa)))
+		return error;
+
+	SCARG(&bsa, s) = lsa.s;
+	SCARG(&bsa, level) = linux_to_bsd_sopt_level(lsa.level);
+	SCARG(&bsa, val) = lsa.optval;
+	SCARG(&bsa, valsize) = lsa.optlen;
+
+	switch (SCARG(&bsa, level)) {
+		case SOL_SOCKET:
+			name = linux_to_bsd_so_sockopt(lsa.optname);
+			break;
+		case IPPROTO_IP:
+			name = linux_to_bsd_ip_sockopt(lsa.optname);
+			break;
+		case IPPROTO_TCP:
+			name = linux_to_bsd_tcp_sockopt(lsa.optname);
+			break;
+		case IPPROTO_UDP:
+			name = linux_to_bsd_udp_sockopt(lsa.optname);
+			break;
+		default:
+			return EINVAL;
+	}
+
+	if (name == -1)
+		return EINVAL;
+	SCARG(&bsa, name) = name;
+
+	return sys_setsockopt(p, &bsa, retval);
+}
+
+/*
+ * getsockopt(2) is very much the same as setsockopt(2) (see above)
+ */
+int
+linux_getsockopt(p, uap, retval)
+	struct proc *p;
+	struct linux_getsockopt_args /* {
+		syscallarg(int) s;
+		syscallarg(int) level;
+		syscallarg(int) optname;
+		syscallarg(void *) optval;
+		syscallarg(int) *optlen;
+	} */ *uap;
+	register_t *retval;
+{
+	struct linux_getsockopt_args lga;
+	struct sys_getsockopt_args bga;
+	int error, name;
+
+	if ((error = copyin((caddr_t) uap, (caddr_t) &lga, sizeof lga)))
+		return error;
+
+	SCARG(&bga, s) = lga.s;
+	SCARG(&bga, level) = linux_to_bsd_sopt_level(lga.level);
+	SCARG(&bga, val) = lga.optval;
+	SCARG(&bga, avalsize) = lga.optlen;
+
+	switch (SCARG(&bga, level)) {
+		case SOL_SOCKET:
+			name = linux_to_bsd_so_sockopt(lga.optname);
+			break;
+		case IPPROTO_IP:
+			name = linux_to_bsd_ip_sockopt(lga.optname);
+			break;
+		case IPPROTO_TCP:
+			name = linux_to_bsd_tcp_sockopt(lga.optname);
+			break;
+		case IPPROTO_UDP:
+			name = linux_to_bsd_udp_sockopt(lga.optname);
+			break;
+		default:
+			return EINVAL;
+	}
+
+	if (name == -1)
+		return EINVAL;
+	SCARG(&bga, name) = name;
+
+	return sys_getsockopt(p, &bga, retval);
+}
+
+/*
+ * Entry point to all Linux socket calls. Just check which call to
+ * make and take appropriate action.
+ */
+int
+linux_sys_socketcall(p, v, retval)
+	struct proc *p;
+	void *v;
+	register_t *retval;
+{
+	struct linux_sys_socketcall_args /* {
+		syscallarg(int) what;
+		syscallarg(void *) args;
+	} */ *uap = v;
+
+	switch (SCARG(uap, what)) {
+	case LINUX_SYS_socket:
+		return linux_socket(p, SCARG(uap, args), retval);
+	case LINUX_SYS_bind:
+		return linux_bind(p, SCARG(uap, args), retval);
+	case LINUX_SYS_connect:
+		return linux_connect(p, SCARG(uap, args), retval);
+	case LINUX_SYS_listen:
+		return linux_listen(p, SCARG(uap, args), retval);
+	case LINUX_SYS_accept:
+		return linux_accept(p, SCARG(uap, args), retval);
+	case LINUX_SYS_getsockname:
+		return linux_getsockname(p, SCARG(uap, args), retval);
+	case LINUX_SYS_getpeername:
+		return linux_getpeername(p, SCARG(uap, args), retval);
+	case LINUX_SYS_socketpair:
+		return linux_socketpair(p, SCARG(uap, args), retval);
+	case LINUX_SYS_send:
+		return linux_send(p, SCARG(uap, args), retval);
+	case LINUX_SYS_recv:
+		return linux_recv(p, SCARG(uap, args), retval);
+	case LINUX_SYS_sendto:
+		return linux_sendto(p, SCARG(uap, args), retval);
+	case LINUX_SYS_recvfrom:
+		return linux_recvfrom(p, SCARG(uap, args), retval);
+	case LINUX_SYS_shutdown:
+		return linux_shutdown(p, SCARG(uap, args), retval);
+	case LINUX_SYS_setsockopt:
+		return linux_setsockopt(p, SCARG(uap, args), retval);
+	case LINUX_SYS_getsockopt:
+		return linux_getsockopt(p, SCARG(uap, args), retval);
+	default:
+		return ENOSYS;
+	}
+}