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freebsd/sys/compat/linux/linux_socket.c
John Baldwin b33887ea31 Don't free the sockaddr in kern_bind() and kern_connect() as not all 
callers pass a sockaddr allocated via malloc() from M_SONAME anymore.
Instead, free it in the callers when necessary.
2006-07-19 18:28:52 +00:00

1257 lines
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/*-
* 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 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/cdefs.h>
__FBSDID("$FreeBSD$");
/* XXX we use functions that might not exist. */
#include "opt_compat.h"
#include "opt_inet6.h"
#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/limits.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/syscallsubr.h>
#include <sys/uio.h>
#include <sys/syslog.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#ifdef INET6
#include <netinet/ip6.h>
#include <netinet6/ip6_var.h>
#endif
#ifdef COMPAT_LINUX32
#include <machine/../linux32/linux.h>
#include <machine/../linux32/linux32_proto.h>
#else
#include <machine/../linux/linux.h>
#include <machine/../linux/linux_proto.h>
#endif
#include <compat/linux/linux_socket.h>
#include <compat/linux/linux_util.h>
static int do_sa_get(struct sockaddr **, const struct osockaddr *, int *,
struct malloc_type *);
static int linux_to_bsd_domain(int);
/*
* Reads a linux sockaddr and does any necessary translation.
* Linux sockaddrs don't have a length field, only a family.
*/
static int
linux_getsockaddr(struct sockaddr **sap, const struct osockaddr *osa, int len)
{
int osalen = len;
return (do_sa_get(sap, osa, &osalen, M_SONAME));
}
/*
* Copy the osockaddr structure pointed to by osa to kernel, adjust
* family and convert to sockaddr.
*/
static int
do_sa_get(struct sockaddr **sap, const struct osockaddr *osa, int *osalen,
struct malloc_type *mtype)
{
int error=0, bdom;
struct sockaddr *sa;
struct osockaddr *kosa;
int alloclen;
#ifdef INET6
int oldv6size;
struct sockaddr_in6 *sin6;
#endif
if (*osalen < 2 || *osalen > UCHAR_MAX || !osa)
return (EINVAL);
alloclen = *osalen;
#ifdef INET6
oldv6size = 0;
/*
* Check for old (pre-RFC2553) sockaddr_in6. We may accept it
* if it's a v4-mapped address, so reserve the proper space
* for it.
*/
if (alloclen == sizeof (struct sockaddr_in6) - sizeof (u_int32_t)) {
alloclen = sizeof (struct sockaddr_in6);
oldv6size = 1;
}
#endif
MALLOC(kosa, struct osockaddr *, alloclen, mtype, M_WAITOK);
if ((error = copyin(osa, kosa, *osalen)))
goto out;
bdom = linux_to_bsd_domain(kosa->sa_family);
if (bdom == -1) {
error = EINVAL;
goto out;
}
#ifdef INET6
/*
* Older Linux IPv6 code uses obsolete RFC2133 struct sockaddr_in6,
* which lacks the scope id compared with RFC2553 one. If we detect
* the situation, reject the address and write a message to system log.
*
* Still accept addresses for which the scope id is not used.
*/
if (oldv6size && bdom == AF_INET6) {
sin6 = (struct sockaddr_in6 *)kosa;
if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr) ||
(!IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
!IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
!IN6_IS_ADDR_V4COMPAT(&sin6->sin6_addr) &&
!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) &&
!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr))) {
sin6->sin6_scope_id = 0;
} else {
log(LOG_DEBUG,
"obsolete pre-RFC2553 sockaddr_in6 rejected\n");
error = EINVAL;
goto out;
}
} else
#endif
if (bdom == AF_INET)
alloclen = sizeof(struct sockaddr_in);
sa = (struct sockaddr *) kosa;
sa->sa_family = bdom;
sa->sa_len = alloclen;
*sap = sa;
*osalen = alloclen;
return (0);
out:
FREE(kosa, mtype);
return (error);
}
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_INET6:
return (AF_INET6);
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
bsd_to_linux_domain(int domain)
{
switch (domain) {
case AF_UNSPEC:
return (LINUX_AF_UNSPEC);
case AF_LOCAL:
return (LINUX_AF_UNIX);
case AF_INET:
return (LINUX_AF_INET);
case AF_INET6:
return (LINUX_AF_INET6);
case AF_CCITT:
return (LINUX_AF_AX25);
case AF_IPX:
return (LINUX_AF_IPX);
case AF_APPLETALK:
return (LINUX_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
bsd_to_linux_sockopt_level(int level)
{
switch (level) {
case SOL_SOCKET:
return (LINUX_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 (flags & LINUX_MSG_NOSIGNAL)
ret_flags |= MSG_NOSIGNAL;
#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)
;
#endif
return ret_flags;
}
/*
* If bsd_to_linux_sockaddr() or linux_to_bsd_sockaddr() faults, then the
* native syscall will fault. Thus, we don't really need to check the
* return values for these functions.
*/
static int
bsd_to_linux_sockaddr(struct sockaddr *arg)
{
struct sockaddr sa;
size_t sa_len = sizeof(struct sockaddr);
int error;
if ((error = copyin(arg, &sa, sa_len)))
return (error);
*(u_short *)&sa = sa.sa_family;
error = copyout(&sa, arg, sa_len);
return (error);
}
static int
linux_to_bsd_sockaddr(struct sockaddr *arg, int len)
{
struct sockaddr sa;
size_t sa_len = sizeof(struct sockaddr);
int error;
if ((error = copyin(arg, &sa, sa_len)))
return (error);
sa.sa_family = *(sa_family_t *)&sa;
sa.sa_len = len;
error = copyout(&sa, arg, sa_len);
return (error);
}
static int
linux_sa_put(struct osockaddr *osa)
{
struct osockaddr sa;
int error, bdom;
/*
* Only read/write the osockaddr family part, the rest is
* not changed.
*/
error = copyin(osa, &sa, sizeof(sa.sa_family));
if (error)
return (error);
bdom = bsd_to_linux_domain(sa.sa_family);
if (bdom == -1)
return (EINVAL);
sa.sa_family = bdom;
error = copyout(&sa, osa, sizeof(sa.sa_family));
if (error)
return (error);
return (0);
}
static int
linux_sendit(struct thread *td, int s, struct msghdr *mp, int flags,
enum uio_seg segflg)
{
struct mbuf *control;
struct sockaddr *to;
int error;
if (mp->msg_name != NULL) {
error = linux_getsockaddr(&to, mp->msg_name, mp->msg_namelen);
if (error)
return (error);
mp->msg_name = to;
} else
to = NULL;
if (mp->msg_control != NULL) {
struct cmsghdr *cmsg;
if (mp->msg_controllen < sizeof(struct cmsghdr)) {
error = EINVAL;
goto bad;
}
error = sockargs(&control, mp->msg_control,
mp->msg_controllen, MT_CONTROL);
if (error)
goto bad;
cmsg = mtod(control, struct cmsghdr *);
cmsg->cmsg_level = linux_to_bsd_sockopt_level(cmsg->cmsg_level);
} else
control = NULL;
error = kern_sendit(td, s, mp, linux_to_bsd_msg_flags(flags), control,
segflg);
bad:
if (to)
FREE(to, M_SONAME);
return (error);
}
/* Return 0 if IP_HDRINCL is set for the given socket. */
static int
linux_check_hdrincl(struct thread *td, int s)
{
int error, optval, size_val;
size_val = sizeof(optval);
error = kern_getsockopt(td, s, IPPROTO_IP, IP_HDRINCL,
&optval, UIO_SYSSPACE, &size_val);
if (error)
return (error);
return (optval == 0);
}
struct linux_sendto_args {
int s;
l_uintptr_t msg;
int len;
int flags;
l_uintptr_t to;
int tolen;
};
/*
* Updated sendto() when IP_HDRINCL is set:
* tweak endian-dependent fields in the IP packet.
*/
static int
linux_sendto_hdrincl(struct thread *td, struct linux_sendto_args *linux_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).
*/
#define linux_ip_copysize 8
struct ip *packet;
struct msghdr msg;
struct iovec aiov[1];
int error;
/* Check that the packet isn't too big or too small. */
if (linux_args->len < linux_ip_copysize ||
linux_args->len > IP_MAXPACKET)
return (EINVAL);
packet = (struct ip *)malloc(linux_args->len, M_TEMP, M_WAITOK);
/* Make kernel copy of the packet to be sent */
if ((error = copyin(PTRIN(linux_args->msg), packet,
linux_args->len)))
goto goout;
/* Convert fields from Linux to BSD raw IP socket format */
packet->ip_len = linux_args->len;
packet->ip_off = ntohs(packet->ip_off);
/* Prepare the msghdr and iovec structures describing the new packet */
msg.msg_name = PTRIN(linux_args->to);
msg.msg_namelen = linux_args->tolen;
msg.msg_iov = aiov;
msg.msg_iovlen = 1;
msg.msg_control = NULL;
msg.msg_flags = 0;
aiov[0].iov_base = (char *)packet;
aiov[0].iov_len = linux_args->len;
error = linux_sendit(td, linux_args->s, &msg, linux_args->flags,
UIO_SYSSPACE);
goout:
free(packet, M_TEMP);
return (error);
}
struct linux_socket_args {
int domain;
int type;
int protocol;
};
static int
linux_socket(struct thread *td, 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(td, &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. */
int hdrincl;
hdrincl = 1;
/* We ignore any error returned by kern_setsockopt() */
kern_setsockopt(td, td->td_retval[0], IPPROTO_IP, IP_HDRINCL,
&hdrincl, UIO_SYSSPACE, sizeof(hdrincl));
}
#ifdef INET6
/*
* Linux AF_INET6 socket has IPV6_V6ONLY setsockopt set to 0 by
* default and some apps depend on this. So, set V6ONLY to 0
* for Linux apps if the sysctl value is set to 1.
*/
if (bsd_args.domain == PF_INET6 && retval_socket >= 0
#ifndef KLD_MODULE
/*
* XXX: Avoid undefined symbol error with an IPv4 only
* kernel.
*/
&& ip6_v6only
#endif
) {
int v6only;
v6only = 0;
/* We ignore any error returned by setsockopt() */
kern_setsockopt(td, td->td_retval[0], IPPROTO_IPV6, IPV6_V6ONLY,
&v6only, UIO_SYSSPACE, sizeof(v6only));
}
#endif
return (retval_socket);
}
struct linux_bind_args {
int s;
l_uintptr_t name;
int namelen;
};
static int
linux_bind(struct thread *td, struct linux_bind_args *args)
{
struct linux_bind_args linux_args;
struct sockaddr *sa;
int error;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
error = linux_getsockaddr(&sa, PTRIN(linux_args.name),
linux_args.namelen);
if (error)
return (error);
error = kern_bind(td, linux_args.s, sa);
free(sa, M_SONAME);
return (error);
}
struct linux_connect_args {
int s;
l_uintptr_t name;
int namelen;
};
int linux_connect(struct thread *, struct linux_connect_args *);
int
linux_connect(struct thread *td, struct linux_connect_args *args)
{
struct linux_connect_args linux_args;
struct socket *so;
struct sockaddr *sa;
u_int fflag;
int error;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
error = linux_getsockaddr(&sa,
(struct osockaddr *)PTRIN(linux_args.name),
linux_args.namelen);
if (error)
return (error);
error = kern_connect(td, linux_args.s, sa);
free(sa, M_SONAME);
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.
*
* XXXRW: Instead of using fgetsock(), check that it is a
* socket and use the file descriptor reference instead of
* creating a new one.
*/
NET_LOCK_GIANT();
error = fgetsock(td, linux_args.s, &so, &fflag);
if (error == 0) {
error = EISCONN;
if (fflag & FNONBLOCK) {
SOCK_LOCK(so);
if (so->so_emuldata == 0)
error = so->so_error;
so->so_emuldata = (void *)1;
SOCK_UNLOCK(so);
}
fputsock(so);
}
NET_UNLOCK_GIANT();
return (error);
}
struct linux_listen_args {
int s;
int backlog;
};
static int
linux_listen(struct thread *td, 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(td, &bsd_args));
}
struct linux_accept_args {
int s;
l_uintptr_t addr;
l_uintptr_t namelen;
};
static int
linux_accept(struct thread *td, struct linux_accept_args *args)
{
struct linux_accept_args linux_args;
struct accept_args /* {
int s;
struct sockaddr * __restrict name;
socklen_t * __restrict anamelen;
} */ bsd_args;
int error, fd;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
bsd_args.s = linux_args.s;
/* XXX: */
bsd_args.name = (struct sockaddr * __restrict)PTRIN(linux_args.addr);
bsd_args.anamelen = PTRIN(linux_args.namelen);/* XXX */
error = accept(td, &bsd_args);
bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.name);
if (error)
return (error);
if (linux_args.addr) {
error = linux_sa_put(PTRIN(linux_args.addr));
if (error) {
(void)kern_close(td, td->td_retval[0]);
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.
*/
fd = td->td_retval[0];
(void)kern_fcntl(td, fd, F_SETFL, 0);
td->td_retval[0] = fd;
return (0);
}
struct linux_getsockname_args {
int s;
l_uintptr_t addr;
l_uintptr_t namelen;
};
static int
linux_getsockname(struct thread *td, struct linux_getsockname_args *args)
{
struct linux_getsockname_args linux_args;
struct getsockname_args /* {
int fdes;
struct sockaddr * __restrict asa;
socklen_t * __restrict alen;
} */ bsd_args;
int error;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
bsd_args.fdes = linux_args.s;
/* XXX: */
bsd_args.asa = (struct sockaddr * __restrict)PTRIN(linux_args.addr);
bsd_args.alen = PTRIN(linux_args.namelen); /* XXX */
error = getsockname(td, &bsd_args);
bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.asa);
if (error)
return (error);
error = linux_sa_put(PTRIN(linux_args.addr));
if (error)
return (error);
return (0);
}
struct linux_getpeername_args {
int s;
l_uintptr_t addr;
l_uintptr_t namelen;
};
static int
linux_getpeername(struct thread *td, struct linux_getpeername_args *args)
{
struct linux_getpeername_args linux_args;
struct getpeername_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 = (struct sockaddr *)PTRIN(linux_args.addr);
bsd_args.alen = (int *)PTRIN(linux_args.namelen);
error = getpeername(td, &bsd_args);
bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.asa);
if (error)
return (error);
error = linux_sa_put(PTRIN(linux_args.addr));
if (error)
return (error);
return (0);
}
struct linux_socketpair_args {
int domain;
int type;
int protocol;
l_uintptr_t rsv;
};
static int
linux_socketpair(struct thread *td, 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 = (int *)PTRIN(linux_args.rsv);
return (socketpair(td, &bsd_args));
}
struct linux_send_args {
int s;
l_uintptr_t msg;
int len;
int flags;
};
static int
linux_send(struct thread *td, struct linux_send_args *args)
{
struct linux_send_args linux_args;
struct sendto_args /* {
int s;
caddr_t buf;
int 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 = (caddr_t)PTRIN(linux_args.msg);
bsd_args.len = linux_args.len;
bsd_args.flags = linux_args.flags;
bsd_args.to = NULL;
bsd_args.tolen = 0;
return sendto(td, &bsd_args);
}
struct linux_recv_args {
int s;
l_uintptr_t msg;
int len;
int flags;
};
static int
linux_recv(struct thread *td, struct linux_recv_args *args)
{
struct linux_recv_args linux_args;
struct recvfrom_args /* {
int s;
caddr_t buf;
int len;
int flags;
struct sockaddr *from;
socklen_t 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 = (caddr_t)PTRIN(linux_args.msg);
bsd_args.len = linux_args.len;
bsd_args.flags = linux_args.flags;
bsd_args.from = NULL;
bsd_args.fromlenaddr = 0;
return (recvfrom(td, &bsd_args));
}
static int
linux_sendto(struct thread *td, struct linux_sendto_args *args)
{
struct linux_sendto_args linux_args;
struct msghdr msg;
struct iovec aiov;
int error;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
if (linux_check_hdrincl(td, linux_args.s) == 0)
/* IP_HDRINCL set, tweak the packet before sending */
return (linux_sendto_hdrincl(td, &linux_args));
msg.msg_name = PTRIN(linux_args.to);
msg.msg_namelen = linux_args.tolen;
msg.msg_iov = &aiov;
msg.msg_iovlen = 1;
msg.msg_control = NULL;
msg.msg_flags = 0;
aiov.iov_base = PTRIN(linux_args.msg);
aiov.iov_len = linux_args.len;
error = linux_sendit(td, linux_args.s, &msg, linux_args.flags,
UIO_USERSPACE);
return (error);
}
struct linux_recvfrom_args {
int s;
l_uintptr_t buf;
int len;
int flags;
l_uintptr_t from;
l_uintptr_t fromlen;
};
static int
linux_recvfrom(struct thread *td, struct linux_recvfrom_args *args)
{
struct linux_recvfrom_args linux_args;
struct recvfrom_args /* {
int s;
caddr_t buf;
size_t len;
int flags;
struct sockaddr * __restrict from;
socklen_t * __restrict fromlenaddr;
} */ bsd_args;
size_t len;
int error;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
if ((error = copyin(PTRIN(linux_args.fromlen), &len, sizeof(size_t))))
return (error);
bsd_args.s = linux_args.s;
bsd_args.buf = PTRIN(linux_args.buf);
bsd_args.len = linux_args.len;
bsd_args.flags = linux_to_bsd_msg_flags(linux_args.flags);
/* XXX: */
bsd_args.from = (struct sockaddr * __restrict)PTRIN(linux_args.from);
bsd_args.fromlenaddr = PTRIN(linux_args.fromlen);/* XXX */
linux_to_bsd_sockaddr((struct sockaddr *)bsd_args.from, len);
error = recvfrom(td, &bsd_args);
bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.from);
if (error)
return (error);
if (linux_args.from) {
error = linux_sa_put((struct osockaddr *)
PTRIN(linux_args.from));
if (error)
return (error);
}
return (0);
}
struct linux_sendmsg_args {
int s;
l_uintptr_t msg;
int flags;
};
static int
linux_sendmsg(struct thread *td, struct linux_sendmsg_args *args)
{
struct linux_sendmsg_args linux_args;
struct msghdr msg;
struct iovec *iov;
int error;
/* XXXTJR sendmsg is broken on amd64 */
error = copyin(args, &linux_args, sizeof(linux_args));
if (error)
return (error);
error = copyin(PTRIN(linux_args.msg), &msg, sizeof(msg));
if (error)
return (error);
error = copyiniov(msg.msg_iov, msg.msg_iovlen, &iov, EMSGSIZE);
if (error)
return (error);
msg.msg_iov = iov;
msg.msg_flags = 0;
error = linux_sendit(td, linux_args.s, &msg, linux_args.flags,
UIO_USERSPACE);
free(iov, M_IOV);
return (error);
}
struct linux_recvmsg_args {
int s;
l_uintptr_t msg;
int flags;
};
static int
linux_recvmsg(struct thread *td, struct linux_recvmsg_args *args)
{
struct linux_recvmsg_args linux_args;
struct recvmsg_args /* {
int s;
struct msghdr *msg;
int flags;
} */ bsd_args;
struct msghdr msg;
struct cmsghdr *cmsg;
int error;
/* XXXTJR recvmsg is broken on amd64 */
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
bsd_args.s = linux_args.s;
bsd_args.msg = PTRIN(linux_args.msg);
bsd_args.flags = linux_to_bsd_msg_flags(linux_args.flags);
if (msg.msg_name) {
linux_to_bsd_sockaddr((struct sockaddr *)msg.msg_name,
msg.msg_namelen);
error = recvmsg(td, &bsd_args);
bsd_to_linux_sockaddr((struct sockaddr *)msg.msg_name);
} else
error = recvmsg(td, &bsd_args);
if (error)
return (error);
if (bsd_args.msg->msg_control != NULL &&
bsd_args.msg->msg_controllen > 0) {
cmsg = (struct cmsghdr*)bsd_args.msg->msg_control;
cmsg->cmsg_level = bsd_to_linux_sockopt_level(cmsg->cmsg_level);
}
error = copyin(PTRIN(linux_args.msg), &msg, sizeof(msg));
if (error)
return (error);
if (msg.msg_name && msg.msg_namelen > 2)
error = linux_sa_put(msg.msg_name);
return (error);
}
struct linux_shutdown_args {
int s;
int how;
};
static int
linux_shutdown(struct thread *td, 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(td, &bsd_args));
}
struct linux_setsockopt_args {
int s;
int level;
int optname;
l_uintptr_t optval;
int optlen;
};
static int
linux_setsockopt(struct thread *td, 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 = PTRIN(linux_args.optval);
bsd_args.valsize = linux_args.optlen;
if (name == IPV6_NEXTHOP) {
linux_to_bsd_sockaddr((struct sockaddr *)bsd_args.val,
bsd_args.valsize);
error = setsockopt(td, &bsd_args);
bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.val);
} else
error = setsockopt(td, &bsd_args);
return (error);
}
struct linux_getsockopt_args {
int s;
int level;
int optname;
l_uintptr_t optval;
l_uintptr_t optlen;
};
static int
linux_getsockopt(struct thread *td, 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 = PTRIN(linux_args.optval);
bsd_args.avalsize = PTRIN(linux_args.optlen);
if (name == IPV6_NEXTHOP) {
error = getsockopt(td, &bsd_args);
bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.val);
} else
error = getsockopt(td, &bsd_args);
return (error);
}
int
linux_socketcall(struct thread *td, struct linux_socketcall_args *args)
{
void *arg = (void *)(intptr_t)args->args;
switch (args->what) {
case LINUX_SOCKET:
return (linux_socket(td, arg));
case LINUX_BIND:
return (linux_bind(td, arg));
case LINUX_CONNECT:
return (linux_connect(td, arg));
case LINUX_LISTEN:
return (linux_listen(td, arg));
case LINUX_ACCEPT:
return (linux_accept(td, arg));
case LINUX_GETSOCKNAME:
return (linux_getsockname(td, arg));
case LINUX_GETPEERNAME:
return (linux_getpeername(td, arg));
case LINUX_SOCKETPAIR:
return (linux_socketpair(td, arg));
case LINUX_SEND:
return (linux_send(td, arg));
case LINUX_RECV:
return (linux_recv(td, arg));
case LINUX_SENDTO:
return (linux_sendto(td, arg));
case LINUX_RECVFROM:
return (linux_recvfrom(td, arg));
case LINUX_SHUTDOWN:
return (linux_shutdown(td, arg));
case LINUX_SETSOCKOPT:
return (linux_setsockopt(td, arg));
case LINUX_GETSOCKOPT:
return (linux_getsockopt(td, arg));
case LINUX_SENDMSG:
return (linux_sendmsg(td, arg));
case LINUX_RECVMSG:
return (linux_recvmsg(td, arg));
}
uprintf("LINUX: 'socket' typ=%d not implemented\n", args->what);
return (ENOSYS);
}
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