0bf686c125
previously conditionally acquired Giant based on debug.mpsafenet. As that has now been removed, they are no longer required. Removing them significantly simplifies error-handling in the socket layer, eliminated quite a bit of unwinding of locking in error cases. While here clean up the now unneeded opt_net.h, which previously was used for the NET_WITH_GIANT kernel option. Clean up some related gotos for consistency. Reviewed by: bz, csjp Tested by: kris Approved by: re (kensmith)
1288 lines
29 KiB
C
1288 lines
29 KiB
C
/*-
|
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* Copyright (c) 1995 Søren Schmidt
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
|
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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|
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/* XXX we use functions that might not exist. */
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#include "opt_compat.h"
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#include "opt_inet6.h"
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|
|
#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <sys/sysproto.h>
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|
#include <sys/fcntl.h>
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|
#include <sys/file.h>
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|
#include <sys/limits.h>
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|
#include <sys/lock.h>
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|
#include <sys/malloc.h>
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|
#include <sys/mutex.h>
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|
#include <sys/mbuf.h>
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|
#include <sys/socket.h>
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|
#include <sys/socketvar.h>
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|
#include <sys/syscallsubr.h>
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|
#include <sys/uio.h>
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|
#include <sys/syslog.h>
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#include <sys/un.h>
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|
|
|
#include <netinet/in.h>
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#include <netinet/in_systm.h>
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|
#include <netinet/ip.h>
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|
#ifdef INET6
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#include <netinet/ip6.h>
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#include <netinet6/ip6_var.h>
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|
#endif
|
|
|
|
#ifdef COMPAT_LINUX32
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|
#include <machine/../linux32/linux.h>
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|
#include <machine/../linux32/linux32_proto.h>
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|
#else
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|
#include <machine/../linux/linux.h>
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|
#include <machine/../linux/linux_proto.h>
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|
#endif
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|
#include <compat/linux/linux_socket.h>
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|
#include <compat/linux/linux_util.h>
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|
|
|
static int do_sa_get(struct sockaddr **, const struct osockaddr *, int *,
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|
struct malloc_type *);
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static int linux_to_bsd_domain(int);
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|
|
|
/*
|
|
* Reads a linux sockaddr and does any necessary translation.
|
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* Linux sockaddrs don't have a length field, only a family.
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|
*/
|
|
static int
|
|
linux_getsockaddr(struct sockaddr **sap, const struct osockaddr *osa, int len)
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|
{
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|
int osalen = len;
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|
|
|
return (do_sa_get(sap, osa, &osalen, M_SONAME));
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}
|
|
|
|
/*
|
|
* Copy the osockaddr structure pointed to by osa to kernel, adjust
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* 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
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|
int oldv6size;
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struct sockaddr_in6 *sin6;
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|
#endif
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|
|
|
if (*osalen < 2 || *osalen > UCHAR_MAX || !osa)
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return (EINVAL);
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|
|
alloclen = *osalen;
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#ifdef INET6
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oldv6size = 0;
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/*
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* Check for old (pre-RFC2553) sockaddr_in6. We may accept it
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* if it's a v4-mapped address, so reserve the proper space
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|
* for it.
|
|
*/
|
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if (alloclen == sizeof (struct sockaddr_in6) - sizeof (u_int32_t)) {
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alloclen = sizeof (struct sockaddr_in6);
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oldv6size = 1;
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|
}
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|
#endif
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|
|
|
MALLOC(kosa, struct osockaddr *, alloclen, mtype, M_WAITOK);
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|
if ((error = copyin(osa, kosa, *osalen)))
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goto out;
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|
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|
bdom = linux_to_bsd_domain(kosa->sa_family);
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|
if (bdom == -1) {
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error = EINVAL;
|
|
goto out;
|
|
}
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|
|
|
#ifdef INET6
|
|
/*
|
|
* Older Linux IPv6 code uses obsolete RFC2133 struct sockaddr_in6,
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* which lacks the scope id compared with RFC2553 one. If we detect
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* the situation, reject the address and write a message to system log.
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*
|
|
* Still accept addresses for which the scope id is not used.
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|
*/
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|
if (oldv6size && bdom == AF_INET6) {
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sin6 = (struct sockaddr_in6 *)kosa;
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if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr) ||
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(!IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
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!IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
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!IN6_IS_ADDR_V4COMPAT(&sin6->sin6_addr) &&
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|
!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) &&
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!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr))) {
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sin6->sin6_scope_id = 0;
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} else {
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log(LOG_DEBUG,
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"obsolete pre-RFC2553 sockaddr_in6 rejected\n");
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error = EINVAL;
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goto out;
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}
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} else
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#endif
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if (bdom == AF_INET)
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alloclen = sizeof(struct sockaddr_in);
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sa = (struct sockaddr *) kosa;
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sa->sa_family = bdom;
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sa->sa_len = alloclen;
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|
*sap = sa;
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*osalen = alloclen;
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|
return (0);
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out:
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|
FREE(kosa, mtype);
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|
return (error);
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|
}
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|
|
|
static int
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|
linux_to_bsd_domain(int domain)
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|
{
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|
|
|
switch (domain) {
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|
case LINUX_AF_UNSPEC:
|
|
return (AF_UNSPEC);
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|
case LINUX_AF_UNIX:
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|
return (AF_LOCAL);
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|
case LINUX_AF_INET:
|
|
return (AF_INET);
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|
case LINUX_AF_INET6:
|
|
return (AF_INET6);
|
|
case LINUX_AF_AX25:
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|
return (AF_CCITT);
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|
case LINUX_AF_IPX:
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|
return (AF_IPX);
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|
case LINUX_AF_APPLETALK:
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|
return (AF_APPLETALK);
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|
}
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|
return (-1);
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|
}
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|
|
static int
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|
bsd_to_linux_domain(int domain)
|
|
{
|
|
|
|
switch (domain) {
|
|
case AF_UNSPEC:
|
|
return (LINUX_AF_UNSPEC);
|
|
case AF_LOCAL:
|
|
return (LINUX_AF_UNIX);
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|
case AF_INET:
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|
return (LINUX_AF_INET);
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|
case AF_INET6:
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|
return (LINUX_AF_INET6);
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|
case AF_CCITT:
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|
return (LINUX_AF_AX25);
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|
case AF_IPX:
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|
return (LINUX_AF_IPX);
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|
case AF_APPLETALK:
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|
return (LINUX_AF_APPLETALK);
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|
}
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return (-1);
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|
}
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|
|
static int
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|
linux_to_bsd_sockopt_level(int level)
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|
{
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|
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|
switch (level) {
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|
case LINUX_SOL_SOCKET:
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|
return (SOL_SOCKET);
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|
}
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|
return (level);
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|
}
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|
static int
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bsd_to_linux_sockopt_level(int level)
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|
{
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|
switch (level) {
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case SOL_SOCKET:
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return (LINUX_SOL_SOCKET);
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}
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return (level);
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}
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|
static int
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|
linux_to_bsd_ip_sockopt(int opt)
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|
{
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|
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|
switch (opt) {
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case LINUX_IP_TOS:
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|
return (IP_TOS);
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|
case LINUX_IP_TTL:
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|
return (IP_TTL);
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|
case LINUX_IP_OPTIONS:
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|
return (IP_OPTIONS);
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|
case LINUX_IP_MULTICAST_IF:
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|
return (IP_MULTICAST_IF);
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|
case LINUX_IP_MULTICAST_TTL:
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|
return (IP_MULTICAST_TTL);
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|
case LINUX_IP_MULTICAST_LOOP:
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|
return (IP_MULTICAST_LOOP);
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|
case LINUX_IP_ADD_MEMBERSHIP:
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|
return (IP_ADD_MEMBERSHIP);
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|
case LINUX_IP_DROP_MEMBERSHIP:
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|
return (IP_DROP_MEMBERSHIP);
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|
case LINUX_IP_HDRINCL:
|
|
return (IP_HDRINCL);
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|
}
|
|
return (-1);
|
|
}
|
|
|
|
static int
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|
linux_to_bsd_so_sockopt(int opt)
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|
{
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|
|
|
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);
|
|
case LINUX_SO_PEERCRED:
|
|
return (LOCAL_PEERCRED);
|
|
case LINUX_SO_RCVLOWAT:
|
|
return (SO_RCVLOWAT);
|
|
case LINUX_SO_SNDLOWAT:
|
|
return (SO_SNDLOWAT);
|
|
case LINUX_SO_RCVTIMEO:
|
|
return (SO_RCVTIMEO);
|
|
case LINUX_SO_SNDTIMEO:
|
|
return (SO_SNDTIMEO);
|
|
case LINUX_SO_TIMESTAMP:
|
|
return (SO_TIMESTAMP);
|
|
case LINUX_SO_ACCEPTCONN:
|
|
return (SO_ACCEPTCONN);
|
|
}
|
|
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);
|
|
if (error == EADDRNOTAVAIL && linux_args.namelen != sizeof(struct sockaddr_in))
|
|
return (EINVAL);
|
|
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.
|
|
*/
|
|
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);
|
|
}
|
|
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) {
|
|
if (error == EFAULT && linux_args.namelen != sizeof(struct sockaddr_in))
|
|
return (EINVAL);
|
|
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);
|
|
|
|
/*
|
|
* Some Linux applications (ping) define a non-NULL control data
|
|
* pointer, but a msg_controllen of 0, which is not allowed in the
|
|
* FreeBSD system call interface. NULL the msg_control pointer in
|
|
* order to handle this case. This should be checked, but allows the
|
|
* Linux ping to work.
|
|
*/
|
|
if (msg.msg_control != NULL && msg.msg_controllen == 0)
|
|
msg.msg_control = NULL;
|
|
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);
|
|
|
|
if ((error = copyin(PTRIN(args->msg), &msg, sizeof (msg))))
|
|
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 (ENOPROTOOPT);
|
|
|
|
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);
|
|
}
|