freebsd-nq/sys/compat/linux/linux_socket.c
Marcel Moolenaar 5002a60f9b Round of cleanups and enhancements. These include (in random order):
o  Introduce private types for use in linux syscalls for two reasons:
   1. establish type independence for ease in porting and,
   2. provide a visual queue as to which syscalls have proper
      prototypes to further cleanup the i386/alpha split.
   Linuxulator types are prefixed by 'l_'. void and char have not
   been "virtualized".

o  Provide dummy functions for all syscalls and remove dummy functions
   or implementations of truely obsolete syscalls.

o  Sanitize the shm*, sem* and msg* syscalls.

o  Make a first attempt to implement the linux_sysctl syscall. At this
   time it only returns one MIB (KERN_VERSION), but most importantly,
   it tells us when we need to add additional sysctls :-)

o  Bump the kenel version up to 2.4.2 (this is not the same as the
   KERN_VERSION MIB, BTW).

o  Implement new syscalls, of which most are specific to i386. Our
   syscall table is now up to date with Linux 2.4.2. Some highlights:
   -  Implement the 32-bit uid_t and gid_t bases syscalls.
   -  Implement a couple of 64-bit file size/offset bases syscalls.

o  Fix or improve numerous syscalls and prototypes.

o  Reduce style(9) violations while I'm here. Especially indentation
   inconsistencies within the same file are addressed. Re-indenting
   did not obfuscate actual changes to the extend that it could not
   be combined.

NOTE: I spend some time testing these changes and found that if there
      were regressions, they were not caused by these changes AFAICT.
      It was observed that installing a RH 7.1 runtime environment
      did make matters worse. Hangs and/or reboots have been observed
      with and without these changes, so when it failed to make life
      better in cases it doesn't look like it made it worse.
2001-09-08 19:07:04 +00:00

953 lines
21 KiB
C

/*-
* Copyright (c) 1995 Søren Schmidt
* 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
* in this position and unchanged.
* 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. The name of the author may not be used to endorse or promote products
* derived from this software withough 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.
*
* $FreeBSD$
*/
/* XXX we use functions that might not exist. */
#include "opt_compat.h"
#ifndef COMPAT_43
#error "Unable to compile Linux-emulator due to missing COMPAT_43 option!"
#endif
#include <sys/param.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <sys/sysproto.h>
#include <sys/fcntl.h>
#include <sys/file.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/uio.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <machine/../linux/linux.h>
#include <machine/../linux/linux_proto.h>
#include <compat/linux/linux_socket.h>
#include <compat/linux/linux_util.h>
#ifndef __alpha__
static int
linux_to_bsd_domain(int domain)
{
switch (domain) {
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);
}
return (-1);
}
static int
linux_to_bsd_sockopt_level(int level)
{
switch (level) {
case LINUX_SOL_SOCKET:
return (SOL_SOCKET);
}
return (level);
}
static int
linux_to_bsd_ip_sockopt(int opt)
{
switch (opt) {
case LINUX_IP_TOS:
return (IP_TOS);
case LINUX_IP_TTL:
return (IP_TTL);
case LINUX_IP_OPTIONS:
return (IP_OPTIONS);
case LINUX_IP_MULTICAST_IF:
return (IP_MULTICAST_IF);
case LINUX_IP_MULTICAST_TTL:
return (IP_MULTICAST_TTL);
case LINUX_IP_MULTICAST_LOOP:
return (IP_MULTICAST_LOOP);
case LINUX_IP_ADD_MEMBERSHIP:
return (IP_ADD_MEMBERSHIP);
case LINUX_IP_DROP_MEMBERSHIP:
return (IP_DROP_MEMBERSHIP);
case LINUX_IP_HDRINCL:
return (IP_HDRINCL);
}
return (-1);
}
static int
linux_to_bsd_so_sockopt(int opt)
{
switch (opt) {
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);
}
return (-1);
}
static int
linux_to_bsd_msg_flags(int flags)
{
int ret_flags = 0;
if (flags & LINUX_MSG_OOB)
ret_flags |= MSG_OOB;
if (flags & LINUX_MSG_PEEK)
ret_flags |= MSG_PEEK;
if (flags & LINUX_MSG_DONTROUTE)
ret_flags |= MSG_DONTROUTE;
if (flags & LINUX_MSG_CTRUNC)
ret_flags |= MSG_CTRUNC;
if (flags & LINUX_MSG_TRUNC)
ret_flags |= MSG_TRUNC;
if (flags & LINUX_MSG_DONTWAIT)
ret_flags |= MSG_DONTWAIT;
if (flags & LINUX_MSG_EOR)
ret_flags |= MSG_EOR;
if (flags & LINUX_MSG_WAITALL)
ret_flags |= MSG_WAITALL;
#if 0 /* not handled */
if (flags & LINUX_MSG_PROXY)
;
if (flags & LINUX_MSG_FIN)
;
if (flags & LINUX_MSG_SYN)
;
if (flags & LINUX_MSG_CONFIRM)
;
if (flags & LINUX_MSG_RST)
;
if (flags & LINUX_MSG_ERRQUEUE)
;
if (flags & LINUX_MSG_NOSIGNAL)
;
#endif
return ret_flags;
}
/* Return 0 if IP_HDRINCL is set for the given socket. */
static int
linux_check_hdrincl(struct proc *p, int s)
{
struct getsockopt_args /* {
int s;
int level;
int name;
caddr_t val;
int *avalsize;
} */ bsd_args;
int error;
caddr_t sg, val, valsize;
int size_val = sizeof val;
int optval;
sg = stackgap_init();
val = stackgap_alloc(&sg, sizeof(int));
valsize = stackgap_alloc(&sg, sizeof(int));
if ((error = copyout(&size_val, valsize, sizeof(size_val))))
return (error);
bsd_args.s = s;
bsd_args.level = IPPROTO_IP;
bsd_args.name = IP_HDRINCL;
bsd_args.val = val;
bsd_args.avalsize = (int *)valsize;
if ((error = getsockopt(p, &bsd_args)))
return (error);
if ((error = copyin(val, &optval, sizeof(optval))))
return (error);
return (optval == 0);
}
/*
* Updated sendto() when IP_HDRINCL is set:
* tweak endian-dependent fields in the IP packet.
*/
static int
linux_sendto_hdrincl(struct proc *p, struct sendto_args *bsd_args)
{
/*
* linux_ip_copysize defines how many bytes we should copy
* from the beginning of the IP packet before we customize it for BSD.
* It should include all the fields we modify (ip_len and ip_off)
* and be as small as possible to minimize copying overhead.
*/
#define linux_ip_copysize 8
caddr_t sg;
struct ip *packet;
struct msghdr *msg;
struct iovec *iov;
int error;
struct sendmsg_args /* {
int s;
caddr_t msg;
int flags;
} */ sendmsg_args;
/* Check the packet isn't too small before we mess with it */
if (bsd_args->len < linux_ip_copysize)
return (EINVAL);
/*
* Tweaking the user buffer in place would be bad manners.
* We create a corrected IP header with just the needed length,
* then use an iovec to glue it to the rest of the user packet
* when calling sendmsg().
*/
sg = stackgap_init();
packet = (struct ip *)stackgap_alloc(&sg, linux_ip_copysize);
msg = (struct msghdr *)stackgap_alloc(&sg, sizeof(*msg));
iov = (struct iovec *)stackgap_alloc(&sg, sizeof(*iov)*2);
/* Make a copy of the beginning of the packet to be sent */
if ((error = copyin(bsd_args->buf, packet, linux_ip_copysize)))
return (error);
/* Convert fields from Linux to BSD raw IP socket format */
packet->ip_len = bsd_args->len;
packet->ip_off = ntohs(packet->ip_off);
/* Prepare the msghdr and iovec structures describing the new packet */
msg->msg_name = bsd_args->to;
msg->msg_namelen = bsd_args->tolen;
msg->msg_iov = iov;
msg->msg_iovlen = 2;
msg->msg_control = NULL;
msg->msg_controllen = 0;
msg->msg_flags = 0;
iov[0].iov_base = (char *)packet;
iov[0].iov_len = linux_ip_copysize;
iov[1].iov_base = (char *)(bsd_args->buf) + linux_ip_copysize;
iov[1].iov_len = bsd_args->len - linux_ip_copysize;
sendmsg_args.s = bsd_args->s;
sendmsg_args.msg = (caddr_t)msg;
sendmsg_args.flags = bsd_args->flags;
return (sendmsg(p, &sendmsg_args));
}
struct linux_socket_args {
int domain;
int type;
int protocol;
};
static int
linux_socket(struct proc *p, struct linux_socket_args *args)
{
struct linux_socket_args linux_args;
struct socket_args /* {
int domain;
int type;
int protocol;
} */ bsd_args;
int error;
int retval_socket;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
bsd_args.protocol = linux_args.protocol;
bsd_args.type = linux_args.type;
bsd_args.domain = linux_to_bsd_domain(linux_args.domain);
if (bsd_args.domain == -1)
return (EINVAL);
retval_socket = socket(p, &bsd_args);
if (bsd_args.type == SOCK_RAW
&& (bsd_args.protocol == IPPROTO_RAW || bsd_args.protocol == 0)
&& bsd_args.domain == AF_INET
&& retval_socket >= 0) {
/* It's a raw IP socket: set the IP_HDRINCL option. */
struct setsockopt_args /* {
int s;
int level;
int name;
caddr_t val;
int valsize;
} */ bsd_setsockopt_args;
caddr_t sg;
int *hdrincl;
sg = stackgap_init();
hdrincl = (int *)stackgap_alloc(&sg, sizeof(*hdrincl));
*hdrincl = 1;
bsd_setsockopt_args.s = p->p_retval[0];
bsd_setsockopt_args.level = IPPROTO_IP;
bsd_setsockopt_args.name = IP_HDRINCL;
bsd_setsockopt_args.val = (caddr_t)hdrincl;
bsd_setsockopt_args.valsize = sizeof(*hdrincl);
/* We ignore any error returned by setsockopt() */
setsockopt(p, &bsd_setsockopt_args);
/* Copy back the return value from socket() */
p->p_retval[0] = bsd_setsockopt_args.s;
}
return (retval_socket);
}
struct linux_bind_args {
int s;
struct sockaddr *name;
int namelen;
};
static int
linux_bind(struct proc *p, struct linux_bind_args *args)
{
struct linux_bind_args linux_args;
struct bind_args /* {
int s;
caddr_t name;
int namelen;
} */ bsd_args;
int error;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
bsd_args.s = linux_args.s;
bsd_args.name = (caddr_t)linux_args.name;
bsd_args.namelen = linux_args.namelen;
return (bind(p, &bsd_args));
}
struct linux_connect_args {
int s;
struct sockaddr * name;
int namelen;
};
int linux_connect(struct proc *, struct linux_connect_args *);
#endif /* !__alpha__*/
int
linux_connect(struct proc *p, struct linux_connect_args *args)
{
struct linux_connect_args linux_args;
struct connect_args /* {
int s;
caddr_t name;
int namelen;
} */ bsd_args;
struct socket *so;
struct file *fp;
int error;
#ifdef __alpha__
bcopy(args, &linux_args, sizeof(linux_args));
#else
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
#endif /* __alpha__ */
bsd_args.s = linux_args.s;
bsd_args.name = (caddr_t)linux_args.name;
bsd_args.namelen = linux_args.namelen;
error = connect(p, &bsd_args);
if (error != EISCONN)
return (error);
/*
* Linux doesn't return EISCONN the first time it occurs,
* when on a non-blocking socket. Instead it returns the
* error getsockopt(SOL_SOCKET, SO_ERROR) would return on BSD.
*/
error = holdsock(p->p_fd, linux_args.s, &fp);
if (error)
return (error);
error = EISCONN;
if (fp->f_flag & FNONBLOCK) {
so = (struct socket *)fp->f_data;
if (so->so_emuldata == 0)
error = so->so_error;
so->so_emuldata = (void *)1;
}
fdrop(fp, p);
return (error);
}
#ifndef __alpha__
struct linux_listen_args {
int s;
int backlog;
};
static int
linux_listen(struct proc *p, struct linux_listen_args *args)
{
struct linux_listen_args linux_args;
struct listen_args /* {
int s;
int backlog;
} */ bsd_args;
int error;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
bsd_args.s = linux_args.s;
bsd_args.backlog = linux_args.backlog;
return (listen(p, &bsd_args));
}
struct linux_accept_args {
int s;
struct sockaddr *addr;
int *namelen;
};
static int
linux_accept(struct proc *p, struct linux_accept_args *args)
{
struct linux_accept_args linux_args;
struct accept_args /* {
int s;
caddr_t name;
int *anamelen;
} */ bsd_args;
struct fcntl_args /* {
int fd;
int cmd;
long arg;
} */ f_args;
int error;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
bsd_args.s = linux_args.s;
bsd_args.name = (caddr_t)linux_args.addr;
bsd_args.anamelen = linux_args.namelen;
error = oaccept(p, &bsd_args);
if (error)
return (error);
/*
* linux appears not to copy flags from the parent socket to the
* accepted one, so we must clear the flags in the new descriptor.
* Ignore any errors, because we already have an open fd.
*/
f_args.fd = p->p_retval[0];
f_args.cmd = F_SETFL;
f_args.arg = 0;
(void)fcntl(p, &f_args);
p->p_retval[0] = f_args.fd;
return (0);
}
struct linux_getsockname_args {
int s;
struct sockaddr *addr;
int *namelen;
};
static int
linux_getsockname(struct proc *p, struct linux_getsockname_args *args)
{
struct linux_getsockname_args linux_args;
struct getsockname_args /* {
int fdes;
caddr_t asa;
int *alen;
} */ bsd_args;
int error;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
bsd_args.fdes = linux_args.s;
bsd_args.asa = (caddr_t) linux_args.addr;
bsd_args.alen = linux_args.namelen;
return (ogetsockname(p, &bsd_args));
}
struct linux_getpeername_args {
int s;
struct sockaddr *addr;
int *namelen;
};
static int
linux_getpeername(struct proc *p, struct linux_getpeername_args *args)
{
struct linux_getpeername_args linux_args;
struct ogetpeername_args /* {
int fdes;
caddr_t asa;
int *alen;
} */ bsd_args;
int error;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
bsd_args.fdes = linux_args.s;
bsd_args.asa = (caddr_t) linux_args.addr;
bsd_args.alen = linux_args.namelen;
return (ogetpeername(p, &bsd_args));
}
struct linux_socketpair_args {
int domain;
int type;
int protocol;
int *rsv;
};
static int
linux_socketpair(struct proc *p, struct linux_socketpair_args *args)
{
struct linux_socketpair_args linux_args;
struct socketpair_args /* {
int domain;
int type;
int protocol;
int *rsv;
} */ bsd_args;
int error;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
bsd_args.domain = linux_to_bsd_domain(linux_args.domain);
if (bsd_args.domain == -1)
return (EINVAL);
bsd_args.type = linux_args.type;
bsd_args.protocol = linux_args.protocol;
bsd_args.rsv = linux_args.rsv;
return (socketpair(p, &bsd_args));
}
struct linux_send_args {
int s;
void *msg;
int len;
int flags;
};
static int
linux_send(struct proc *p, struct linux_send_args *args)
{
struct linux_send_args linux_args;
struct osend_args /* {
int s;
caddr_t buf;
int len;
int flags;
} */ bsd_args;
int error;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
bsd_args.s = linux_args.s;
bsd_args.buf = linux_args.msg;
bsd_args.len = linux_args.len;
bsd_args.flags = linux_args.flags;
return (osend(p, &bsd_args));
}
struct linux_recv_args {
int s;
void *msg;
int len;
int flags;
};
static int
linux_recv(struct proc *p, struct linux_recv_args *args)
{
struct linux_recv_args linux_args;
struct orecv_args /* {
int s;
caddr_t buf;
int len;
int flags;
} */ bsd_args;
int error;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
bsd_args.s = linux_args.s;
bsd_args.buf = linux_args.msg;
bsd_args.len = linux_args.len;
bsd_args.flags = linux_args.flags;
return (orecv(p, &bsd_args));
}
struct linux_sendto_args {
int s;
void *msg;
int len;
int flags;
caddr_t to;
int tolen;
};
static int
linux_sendto(struct proc *p, struct linux_sendto_args *args)
{
struct linux_sendto_args linux_args;
struct sendto_args /* {
int s;
caddr_t buf;
size_t len;
int flags;
caddr_t to;
int tolen;
} */ bsd_args;
int error;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
bsd_args.s = linux_args.s;
bsd_args.buf = linux_args.msg;
bsd_args.len = linux_args.len;
bsd_args.flags = linux_args.flags;
bsd_args.to = linux_args.to;
bsd_args.tolen = linux_args.tolen;
if (linux_check_hdrincl(p, linux_args.s) == 0)
/* IP_HDRINCL set, tweak the packet before sending */
return (linux_sendto_hdrincl(p, &bsd_args));
return (sendto(p, &bsd_args));
}
struct linux_recvfrom_args {
int s;
void *buf;
int len;
int flags;
caddr_t from;
int *fromlen;
};
static int
linux_recvfrom(struct proc *p, struct linux_recvfrom_args *args)
{
struct linux_recvfrom_args linux_args;
struct recvfrom_args /* {
int s;
caddr_t buf;
size_t len;
int flags;
caddr_t from;
int *fromlenaddr;
} */ bsd_args;
int error;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
bsd_args.s = linux_args.s;
bsd_args.buf = linux_args.buf;
bsd_args.len = linux_args.len;
bsd_args.flags = linux_to_bsd_msg_flags(linux_args.flags);
bsd_args.from = linux_args.from;
bsd_args.fromlenaddr = linux_args.fromlen;
return (orecvfrom(p, &bsd_args));
}
struct linux_recvmsg_args {
int s;
struct msghdr *msg;
int flags;
};
static int
linux_recvmsg(struct proc *p, struct linux_recvmsg_args *args)
{
struct linux_recvmsg_args linux_args;
struct recvmsg_args /* {
int s;
struct msghdr *msg;
int flags;
} */ bsd_args;
int error;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
bsd_args.s = linux_args.s;
bsd_args.msg = linux_args.msg;
bsd_args.flags = linux_to_bsd_msg_flags(linux_args.flags);
return (recvmsg(p, &bsd_args));
}
struct linux_shutdown_args {
int s;
int how;
};
static int
linux_shutdown(struct proc *p, struct linux_shutdown_args *args)
{
struct linux_shutdown_args linux_args;
struct shutdown_args /* {
int s;
int how;
} */ bsd_args;
int error;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
bsd_args.s = linux_args.s;
bsd_args.how = linux_args.how;
return (shutdown(p, &bsd_args));
}
struct linux_setsockopt_args {
int s;
int level;
int optname;
void *optval;
int optlen;
};
static int
linux_setsockopt(struct proc *p, struct linux_setsockopt_args *args)
{
struct linux_setsockopt_args linux_args;
struct setsockopt_args /* {
int s;
int level;
int name;
caddr_t val;
int valsize;
} */ bsd_args;
int error, name;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
bsd_args.s = linux_args.s;
bsd_args.level = linux_to_bsd_sockopt_level(linux_args.level);
switch (bsd_args.level) {
case SOL_SOCKET:
name = linux_to_bsd_so_sockopt(linux_args.optname);
break;
case IPPROTO_IP:
name = linux_to_bsd_ip_sockopt(linux_args.optname);
break;
case IPPROTO_TCP:
/* Linux TCP option values match BSD's */
name = linux_args.optname;
break;
default:
name = -1;
break;
}
if (name == -1)
return (EINVAL);
bsd_args.name = name;
bsd_args.val = linux_args.optval;
bsd_args.valsize = linux_args.optlen;
return (setsockopt(p, &bsd_args));
}
struct linux_getsockopt_args {
int s;
int level;
int optname;
void *optval;
int *optlen;
};
static int
linux_getsockopt(struct proc *p, struct linux_getsockopt_args *args)
{
struct linux_getsockopt_args linux_args;
struct getsockopt_args /* {
int s;
int level;
int name;
caddr_t val;
int *avalsize;
} */ bsd_args;
int error, name;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
bsd_args.s = linux_args.s;
bsd_args.level = linux_to_bsd_sockopt_level(linux_args.level);
switch (bsd_args.level) {
case SOL_SOCKET:
name = linux_to_bsd_so_sockopt(linux_args.optname);
break;
case IPPROTO_IP:
name = linux_to_bsd_ip_sockopt(linux_args.optname);
break;
case IPPROTO_TCP:
/* Linux TCP option values match BSD's */
name = linux_args.optname;
break;
default:
name = -1;
break;
}
if (name == -1)
return (EINVAL);
bsd_args.name = name;
bsd_args.val = linux_args.optval;
bsd_args.avalsize = linux_args.optlen;
return (getsockopt(p, &bsd_args));
}
int
linux_socketcall(struct proc *p, struct linux_socketcall_args *args)
{
void *arg = (void *)args->args;
switch (args->what) {
case LINUX_SOCKET:
return (linux_socket(p, arg));
case LINUX_BIND:
return (linux_bind(p, arg));
case LINUX_CONNECT:
return (linux_connect(p, arg));
case LINUX_LISTEN:
return (linux_listen(p, arg));
case LINUX_ACCEPT:
return (linux_accept(p, arg));
case LINUX_GETSOCKNAME:
return (linux_getsockname(p, arg));
case LINUX_GETPEERNAME:
return (linux_getpeername(p, arg));
case LINUX_SOCKETPAIR:
return (linux_socketpair(p, arg));
case LINUX_SEND:
return (linux_send(p, arg));
case LINUX_RECV:
return (linux_recv(p, arg));
case LINUX_SENDTO:
return (linux_sendto(p, arg));
case LINUX_RECVFROM:
return (linux_recvfrom(p, arg));
case LINUX_SHUTDOWN:
return (linux_shutdown(p, arg));
case LINUX_SETSOCKOPT:
return (linux_setsockopt(p, arg));
case LINUX_GETSOCKOPT:
return (linux_getsockopt(p, arg));
case LINUX_SENDMSG:
do {
int error;
int level;
caddr_t control;
struct {
int s;
const struct msghdr *msg;
int flags;
} *uap = arg;
error = copyin(&uap->msg->msg_control, &control,
sizeof(caddr_t));
if (error)
return (error);
if (control == NULL)
goto done;
error = copyin(&((struct cmsghdr*)control)->cmsg_level,
&level, sizeof(int));
if (error)
return (error);
if (level == 1) {
/*
* Linux thinks that SOL_SOCKET is 1; we know
* that it's really 0xffff, of course.
*/
level = SOL_SOCKET;
error = copyout(&level,
&((struct cmsghdr *)control)->cmsg_level,
sizeof(int));
if (error)
return (error);
}
done:
return (sendmsg(p, arg));
} while (0);
case LINUX_RECVMSG:
return (linux_recvmsg(p, arg));
}
uprintf("LINUX: 'socket' typ=%d not implemented\n", args->what);
return (ENOSYS);
}
#endif /*!__alpha__*/