NetBSD/sys/compat/linux/linux_socket.c

633 lines
15 KiB
C

/* $NetBSD: linux_socket.c,v 1.1 1995/02/28 23:25:17 fvdl 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 <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_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
*/
static 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;
}
}
static int
linux_socket(p, args, retval)
struct proc *p;
struct linux_socket_args /* {
syscallarg(int) domain;
syscallarg(int) type;
syscallarg(int) protocol;
} */ *args;
register_t *retval;
{
struct linux_socket_args lsa;
struct socket_args bsa;
int error;
if ((error = copyin((caddr_t) args, (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 socket(p, &bsa, retval);
}
static int
linux_bind(p, args, retval)
struct proc *p;
struct linux_bind_args /* {
syscallarg(int) s;
syscallarg(struct sockaddr *) name;
syscallarg(int) namelen;
} */ *args;
register_t *retval;
{
struct linux_bind_args lba;
struct bind_args bba;
int error;
if ((error = copyin((caddr_t) args, (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 bind(p, &bba, retval);
}
static int
linux_connect(p, args, retval)
struct proc *p;
struct linux_connect_args /* {
syscallarg(int) s;
syscallarg(struct sockaddr *) name;
syscallarg(int) namelen;
} */ *args;
register_t *retval;
{
struct linux_connect_args lca;
struct connect_args bca;
int error;
if ((error = copyin((caddr_t) args, (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 connect(p, &bca, retval);
}
static int
linux_listen(p, args, retval)
struct proc *p;
struct linux_listen_args /* {
syscallarg(int) s;
syscallarg(int) backlog;
} */ *args;
register *retval;
{
struct linux_listen_args lla;
struct listen_args bla;
int error;
if ((error = copyin((caddr_t) args, (caddr_t) &lla, sizeof lla)))
return error;
SCARG(&bla, s) = lla.s;
SCARG(&bla, backlog) = lla.backlog;
return listen(p, &bla, retval);
}
static int
linux_accept(p, args, retval)
struct proc *p;
struct linux_accept_args /* {
syscallarg(int) s;
syscallarg(struct sockaddr *) addr;
syscallarg(int *) namelen;
} */ *args;
register_t *retval;
{
struct linux_accept_args laa;
struct compat_43_accept_args baa;
int error;
if ((error = copyin((caddr_t) args, (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_accept(p, &baa, retval);
}
static int
linux_getsockname(p, args, retval)
struct proc *p;
struct linux_getsockname_args /* {
syscallarg(int) s;
syscallarg(struct sockaddr *) addr;
syscallarg(int *) namelen;
} */ *args;
register_t *retval;
{
struct linux_getsockname_args lga;
struct compat_43_getsockname_args bga;
int error;
if ((error = copyin((caddr_t) args, (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_getsockname(p, &bga, retval);
}
static int
linux_getpeername(p, args, retval)
struct proc *p;
struct linux_getpeername_args /* {
syscallarg(int) s;
syscallarg(struct sockaddr *) addr;
syscallarg(int *) namelen;
} */ *args;
register_t *retval;
{
struct linux_getpeername_args lga;
struct compat_43_getpeername_args bga;
int error;
if ((error = copyin((caddr_t) args, (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_getpeername(p, &bga, retval);
}
static int
linux_socketpair(p, args, retval)
struct proc *p;
struct linux_socketpair_args /* {
syscallarg(int) domain;
syscallarg(int) type;
syscallarg(int) protocol;
syscallarg(int *) rsv;
} */ *args;
register_t *retval;
{
struct linux_socketpair_args lsa;
struct socketpair_args bsa;
int error;
if ((error = copyin((caddr_t) args, &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 socketpair(p, &bsa, retval);
}
static int
linux_send(p, args, retval)
struct proc *p;
struct linux_send_args /* {
syscallarg(int) s;
syscallarg(void *) msg;
syscallarg(int) len;
syscallarg(int) flags;
} */ *args;
register_t *retval;
{
struct linux_send_args lsa;
struct compat_43_send_args bsa;
int error;
if ((error = copyin((caddr_t) args, (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_send(p, &bsa, retval);
}
static int
linux_recv(p, args, retval)
struct proc *p;
struct linux_recv_args *args;
register_t *retval;
{
struct linux_recv_args lra;
struct compat_43_recv_args bra;
int error;
if ((error = copyin((caddr_t) args, (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_recv(p, &bra, retval);
}
static int
linux_sendto(p, args, 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;
} */ *args;
register_t *retval;
{
struct linux_sendto_args lsa;
struct sendto_args bsa;
int error;
if ((error = copyin((caddr_t) args, (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 sendto(p, &bsa, retval);
}
static int
linux_recvfrom(p, args, 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;
} */ *args;
{
struct linux_recvfrom_args lra;
struct compat_43_recvfrom_args bra;
int error;
if ((error = copyin((caddr_t) args, (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_recvfrom(p, &bra, retval);
}
static int
linux_shutdown(p, args, retval)
struct proc *p;
struct linux_shutdown_args /* {
syscallarg(int) s;
syscallarg(int) how;
} */ *args;
register_t *retval;
{
struct linux_shutdown_args lsa;
struct shutdown_args bsa;
int error;
if ((error = copyin((caddr_t) args, (caddr_t) &lsa, sizeof lsa)))
return error;
SCARG(&bsa, s) = lsa.s;
SCARG(&bsa, how) = lsa.how;
return 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.
*/
static int
linux_to_bsd_sopt_level(llevel)
int llevel;
{
switch (llevel) {
case LINUX_SOL_SOCKET:
return SOL_SOCKET;
default:
return llevel;
}
}
/*
* Convert Linux IP level socket option number to NetBSD values.
* Linux only implements IP_TOS and IP_TTL
*/
static 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;
default:
return -1;
}
}
/*
* Convert Linux socket level socket option numbers to NetBSD values.
*/
static 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;
}
}
/*
* Another reasonably straightforward function: setsockopt(2). Only
* the SOL_SOCKET and IPPROTO_IP levels are implemented here.
* 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.
*/
static int
linux_setsockopt(p, args, retval)
struct proc *p;
struct linux_setsockopt_args /* {
syscallarg(int) s;
syscallarg(int) level;
syscallarg(int) optname;
syscallarg(void *) optval;
syscallarg(int) optlen;
} */ *args;
register_t *retval;
{
struct linux_setsockopt_args lsa;
struct setsockopt_args bsa;
int error, name;
if ((error = copyin((caddr_t) args, (caddr_t) &lsa, sizeof lsa)))
return error;
SCARG(&bsa, s) = lsa.s;
SCARG(&bsa, level) = linux_to_bsd_sopt_level(lsa.level);
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;
default:
return EINVAL;
}
if (name == -1)
return EINVAL;
SCARG(&bsa, name) = name;
SCARG(&bsa, val) = lsa.optval;
SCARG(&bsa, valsize) = lsa.optlen;
return setsockopt(p, &bsa, retval);
}
/*
* getsockopt(2) is very much the same as setsockopt(2) (see above)
*/
static int
linux_getsockopt(p, args, retval)
struct proc *p;
struct linux_getsockopt_args /* {
syscallarg(int) s;
syscallarg(int) level;
syscallarg(int) optname;
syscallarg(void *) optval;
syscallarg(int) *optlen;
} */ *args;
register_t *retval;
{
struct linux_getsockopt_args lga;
struct getsockopt_args bga;
int error, name;
if ((error = copyin((caddr_t) args, (caddr_t) &lga, sizeof lga)))
return error;
SCARG(&bga, s) = lga.s;
SCARG(&bga, level) = linux_to_bsd_sopt_level(lga.level);
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;
default:
return EINVAL;
}
if (name == -1)
return EINVAL;
SCARG(&bga, val) = lga.optval;
SCARG(&bga, avalsize) = lga.optlen;
return getsockopt(p, &bga, retval);
}
/*
* Entry point to all Linux socket calls. Just check which call to
* make and take appropriate action.
*/
int
linux_socketcall(p, uap, retval)
struct proc *p;
struct linux_socketcall_args /* {
syscallarg(int) what;
syscallarg(void *) args;
} */ *uap;
register_t *retval;
{
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;
}
}