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freebsd/sys/compat/linux/linux_socket.c
Dag-Erling Smørgrav 1d062e2be8 Clean up whitespace and remove register keyword.
2003-03-03 09:17:12 +00:00

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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.
*
* $FreeBSD$
*/
/* XXX we use functions that might not exist. */
#include "opt_compat.h"
#include "opt_inet6.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/malloc.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
#include <machine/../linux/linux.h>
#include <machine/../linux/linux_proto.h>
#include <compat/linux/linux_socket.h>
#include <compat/linux/linux_util.h>
#include <machine/limits.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");
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);
}
#ifndef __alpha__
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
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;
}
/*
* Allocate stackgap and put the converted sockaddr structure
* there, address on stackgap returned in sap.
*/
static int
linux_sa_get(caddr_t *sgp, struct sockaddr **sap,
const struct osockaddr *osa, int *osalen)
{
struct sockaddr *sa, *usa;
int alloclen, error;
alloclen = *osalen;
error = do_sa_get(&sa, osa, &alloclen, M_TEMP);
if (error)
return (error);
usa = (struct sockaddr *) stackgap_alloc(sgp, alloclen);
if (!usa) {
error = ENOMEM;
goto out;
}
if ((error = copyout(sa, usa, alloclen)))
goto out;
*sap = usa;
*osalen = alloclen;
out:
FREE(sa, M_TEMP);
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);
}
/* Return 0 if IP_HDRINCL is set for the given socket. */
static int
linux_check_hdrincl(struct thread *td, caddr_t *sg, int s)
{
struct getsockopt_args /* {
int s;
int level;
int name;
caddr_t val;
int *avalsize;
} */ bsd_args;
int error;
caddr_t val, valsize;
int size_val = sizeof val;
int optval;
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(td, &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 thread *td, caddr_t *sg, 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
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().
*/
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(td, &sendmsg_args));
}
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;
struct setsockopt_args /* {
int s;
int level;
int name;
caddr_t val;
int valsize;
} */ bsd_setsockopt_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. */
caddr_t sg;
int *hdrincl;
sg = stackgap_init();
hdrincl = (int *)stackgap_alloc(&sg, sizeof(*hdrincl));
*hdrincl = 1;
bsd_setsockopt_args.s = td->td_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(td, &bsd_setsockopt_args);
/* Copy back the return value from socket() */
td->td_retval[0] = bsd_setsockopt_args.s;
}
#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
) {
caddr_t sg;
int *v6only;
sg = stackgap_init();
v6only = (int *)stackgap_alloc(&sg, sizeof(*v6only));
*v6only = 0;
bsd_setsockopt_args.s = td->td_retval[0];
bsd_setsockopt_args.level = IPPROTO_IPV6;
bsd_setsockopt_args.name = IPV6_V6ONLY;
bsd_setsockopt_args.val = (caddr_t)v6only;
bsd_setsockopt_args.valsize = sizeof(*v6only);
/* We ignore any error returned by setsockopt() */
setsockopt(td, &bsd_setsockopt_args);
/* Copy back the return value from socket() */
td->td_retval[0] = bsd_setsockopt_args.s;
}
#endif
return (retval_socket);
}
struct linux_bind_args {
int s;
struct osockaddr *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, linux_args.name, linux_args.namelen);
if (error)
return (error);
return (kern_bind(td, linux_args.s, sa));
}
struct linux_connect_args {
int s;
struct osockaddr * name;
int namelen;
};
int linux_connect(struct thread *, struct linux_connect_args *);
#endif /* !__alpha__*/
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;
#ifdef __alpha__
bcopy(args, &linux_args, sizeof(linux_args));
#else
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
#endif /* __alpha__ */
error = linux_getsockaddr(&sa, (struct osockaddr *)linux_args.name,
linux_args.namelen);
if (error)
return (error);
error = kern_connect(td, linux_args.s, sa);
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.
*/
if ((error = fgetsock(td, linux_args.s, &so, &fflag)) != 0)
return(error);
error = EISCONN;
if (fflag & FNONBLOCK) {
if (so->so_emuldata == 0)
error = so->so_error;
so->so_emuldata = (void *)1;
}
fputsock(so);
return (error);
}
#ifndef __alpha__
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;
struct osockaddr *addr;
int *namelen;
};
static int
linux_accept(struct thread *td, struct linux_accept_args *args)
{
struct linux_accept_args linux_args;
struct accept_args /* {
int s;
caddr_t name;
int *anamelen;
} */ bsd_args;
struct close_args /* {
int fd;
} */ c_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(td, &bsd_args);
if (error)
return (error);
if (linux_args.addr) {
error = linux_sa_put(linux_args.addr);
if (error) {
c_args.fd = td->td_retval[0];
(void)close(td, &c_args);
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 = td->td_retval[0];
f_args.cmd = F_SETFL;
f_args.arg = 0;
(void)fcntl(td, &f_args);
td->td_retval[0] = f_args.fd;
return (0);
}
struct linux_getsockname_args {
int s;
struct osockaddr *addr;
int *namelen;
};
static int
linux_getsockname(struct thread *td, 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;
error = ogetsockname(td, &bsd_args);
if (error)
return (error);
error = linux_sa_put(linux_args.addr);
if (error)
return (error);
return (0);
}
struct linux_getpeername_args {
int s;
struct osockaddr *addr;
int *namelen;
};
static int
linux_getpeername(struct thread *td, 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;
error = ogetpeername(td, &bsd_args);
if (error)
return (error);
error = linux_sa_put(linux_args.addr);
if (error)
return (error);
return (0);
}
struct linux_socketpair_args {
int domain;
int type;
int protocol;
int *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 = linux_args.rsv;
return (socketpair(td, &bsd_args));
}
struct linux_send_args {
int s;
void *msg;
int len;
int flags;
};
static int
linux_send(struct thread *td, 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(td, &bsd_args));
}
struct linux_recv_args {
int s;
void *msg;
int len;
int flags;
};
static int
linux_recv(struct thread *td, 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(td, &bsd_args));
}
struct linux_sendto_args {
int s;
void *msg;
int len;
int flags;
caddr_t to;
int tolen;
};
static int
linux_sendto(struct thread *td, 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;
caddr_t sg = stackgap_init();
struct sockaddr *to;
int tolen, error;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
tolen = linux_args.tolen;
if (linux_args.to) {
error = linux_sa_get(&sg, &to,
(struct osockaddr *) linux_args.to, &tolen);
if (error)
return (error);
} else
to = NULL;
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 = (caddr_t) to;
bsd_args.tolen = (unsigned int) tolen;
if (linux_check_hdrincl(td, &sg, linux_args.s) == 0)
/* IP_HDRINCL set, tweak the packet before sending */
return (linux_sendto_hdrincl(td, &sg, &bsd_args));
return (sendto(td, &bsd_args));
}
struct linux_recvfrom_args {
int s;
void *buf;
int len;
int flags;
caddr_t from;
int *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;
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;
error = orecvfrom(td, &bsd_args);
if (error)
return (error);
if (linux_args.from) {
error = linux_sa_put((struct osockaddr *) linux_args.from);
if (error)
return (error);
}
return (0);
}
struct linux_sendmsg_args {
int s;
const struct msghdr *msg;
int flags;
};
static int
linux_sendmsg(struct thread *td, struct linux_sendmsg_args *args)
{
struct linux_sendmsg_args linux_args;
struct sendmsg_args /* {
int s;
const struct msghdr *msg;
int flags;
} */ bsd_args;
struct msghdr msg;
struct msghdr *nmsg = NULL;
int error;
int level;
caddr_t control;
if ((error = copyin(args, &linux_args, sizeof(linux_args))))
return (error);
error = copyin(linux_args.msg, &msg, sizeof(msg));
if (error)
return (error);
if (msg.msg_name) {
struct sockaddr *sa;
caddr_t sg = stackgap_init();
nmsg = (struct msghdr *) stackgap_alloc(&sg,
sizeof(struct msghdr));
if (!nmsg)
return (ENOMEM);
error = linux_sa_get(&sg, &sa,
(struct osockaddr *) msg.msg_name, &msg.msg_namelen);
if (error)
return (error);
msg.msg_name = (struct sockaddr *) sa;
error = copyout(&msg, nmsg, sizeof(struct msghdr));
if (error)
return (error);
}
error = copyin(&linux_args.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:
bsd_args.s = linux_args.s;
bsd_args.msg = (caddr_t)nmsg;
bsd_args.flags = linux_args.flags;
return (sendmsg(td, &bsd_args));
}
struct linux_recvmsg_args {
int s;
struct msghdr *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;
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);
error = recvmsg(td, &bsd_args);
if (error)
return (error);
error = copyin(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;
void *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 = linux_args.optval;
bsd_args.valsize = linux_args.optlen;
return (setsockopt(td, &bsd_args));
}
struct linux_getsockopt_args {
int s;
int level;
int optname;
void *optval;
int *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 = linux_args.optval;
bsd_args.avalsize = linux_args.optlen;
return (getsockopt(td, &bsd_args));
}
int
linux_socketcall(struct thread *td, struct linux_socketcall_args *args)
{
void *arg = (void *)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);
}
#endif /*!__alpha__*/
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