a0bd41720a
Approved by: cperciva (mentor)
1710 lines
38 KiB
C
1710 lines
38 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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/* 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/capability.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 <net/if.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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#include <netinet/tcp.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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#include <netinet6/in6_var.h>
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#endif
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#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 linux_to_bsd_domain(int);
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/*
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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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* Copy the osockaddr structure pointed to by osa to kernel, adjust
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* family and convert to sockaddr.
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*/
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static int
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linux_getsockaddr(struct sockaddr **sap, const struct osockaddr *osa, int salen)
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{
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struct sockaddr *sa;
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struct osockaddr *kosa;
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#ifdef INET6
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struct sockaddr_in6 *sin6;
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int oldv6size;
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#endif
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char *name;
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int bdom, error, hdrlen, namelen;
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if (salen < 2 || salen > UCHAR_MAX || !osa)
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return (EINVAL);
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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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*/
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if (salen == sizeof(struct sockaddr_in6) - sizeof(uint32_t)) {
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salen += sizeof(uint32_t);
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oldv6size = 1;
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}
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#endif
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kosa = malloc(salen, M_SONAME, M_WAITOK);
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if ((error = copyin(osa, kosa, salen)))
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goto out;
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bdom = linux_to_bsd_domain(kosa->sa_family);
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if (bdom == -1) {
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error = EAFNOSUPPORT;
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goto out;
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}
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#ifdef INET6
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/*
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* 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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*
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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) {
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if (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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salen -= sizeof(uint32_t);
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}
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#endif
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if (bdom == AF_INET) {
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if (salen < sizeof(struct sockaddr_in)) {
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error = EINVAL;
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goto out;
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}
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salen = sizeof(struct sockaddr_in);
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}
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if (bdom == AF_LOCAL && salen > sizeof(struct sockaddr_un)) {
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hdrlen = offsetof(struct sockaddr_un, sun_path);
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name = ((struct sockaddr_un *)kosa)->sun_path;
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if (*name == '\0') {
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/*
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* Linux abstract namespace starts with a NULL byte.
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* XXX We do not support abstract namespace yet.
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*/
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namelen = strnlen(name + 1, salen - hdrlen - 1) + 1;
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} else
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namelen = strnlen(name, salen - hdrlen);
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salen = hdrlen + namelen;
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if (salen > sizeof(struct sockaddr_un)) {
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error = ENAMETOOLONG;
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goto out;
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}
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}
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sa = (struct sockaddr *)kosa;
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sa->sa_family = bdom;
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sa->sa_len = salen;
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*sap = sa;
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return (0);
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out:
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free(kosa, M_SONAME);
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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:
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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:
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return (AF_INET);
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case LINUX_AF_INET6:
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return (AF_INET6);
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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)
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{
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switch (domain) {
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case AF_UNSPEC:
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return (LINUX_AF_UNSPEC);
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case AF_LOCAL:
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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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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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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:
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return (IP_HDRINCL);
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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_so_sockopt(int opt)
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{
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switch (opt) {
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case LINUX_SO_DEBUG:
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return (SO_DEBUG);
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case LINUX_SO_REUSEADDR:
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return (SO_REUSEADDR);
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case LINUX_SO_TYPE:
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return (SO_TYPE);
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case LINUX_SO_ERROR:
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return (SO_ERROR);
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case LINUX_SO_DONTROUTE:
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return (SO_DONTROUTE);
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case LINUX_SO_BROADCAST:
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return (SO_BROADCAST);
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case LINUX_SO_SNDBUF:
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return (SO_SNDBUF);
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case LINUX_SO_RCVBUF:
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return (SO_RCVBUF);
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case LINUX_SO_KEEPALIVE:
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return (SO_KEEPALIVE);
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case LINUX_SO_OOBINLINE:
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return (SO_OOBINLINE);
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case LINUX_SO_LINGER:
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return (SO_LINGER);
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case LINUX_SO_PEERCRED:
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return (LOCAL_PEERCRED);
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case LINUX_SO_RCVLOWAT:
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return (SO_RCVLOWAT);
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case LINUX_SO_SNDLOWAT:
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return (SO_SNDLOWAT);
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case LINUX_SO_RCVTIMEO:
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return (SO_RCVTIMEO);
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case LINUX_SO_SNDTIMEO:
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return (SO_SNDTIMEO);
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case LINUX_SO_TIMESTAMP:
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return (SO_TIMESTAMP);
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case LINUX_SO_ACCEPTCONN:
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return (SO_ACCEPTCONN);
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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_tcp_sockopt(int opt)
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{
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switch (opt) {
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case LINUX_TCP_NODELAY:
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return (TCP_NODELAY);
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case LINUX_TCP_MAXSEG:
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return (TCP_MAXSEG);
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case LINUX_TCP_KEEPIDLE:
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return (TCP_KEEPIDLE);
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case LINUX_TCP_KEEPINTVL:
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return (TCP_KEEPINTVL);
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case LINUX_TCP_KEEPCNT:
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return (TCP_KEEPCNT);
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case LINUX_TCP_MD5SIG:
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return (TCP_MD5SIG);
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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_msg_flags(int flags)
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{
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int ret_flags = 0;
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if (flags & LINUX_MSG_OOB)
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ret_flags |= MSG_OOB;
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if (flags & LINUX_MSG_PEEK)
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ret_flags |= MSG_PEEK;
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if (flags & LINUX_MSG_DONTROUTE)
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ret_flags |= MSG_DONTROUTE;
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if (flags & LINUX_MSG_CTRUNC)
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ret_flags |= MSG_CTRUNC;
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if (flags & LINUX_MSG_TRUNC)
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ret_flags |= MSG_TRUNC;
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if (flags & LINUX_MSG_DONTWAIT)
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ret_flags |= MSG_DONTWAIT;
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if (flags & LINUX_MSG_EOR)
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ret_flags |= MSG_EOR;
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if (flags & LINUX_MSG_WAITALL)
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ret_flags |= MSG_WAITALL;
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if (flags & LINUX_MSG_NOSIGNAL)
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ret_flags |= MSG_NOSIGNAL;
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#if 0 /* not handled */
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if (flags & LINUX_MSG_PROXY)
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;
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if (flags & LINUX_MSG_FIN)
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;
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if (flags & LINUX_MSG_SYN)
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;
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if (flags & LINUX_MSG_CONFIRM)
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;
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if (flags & LINUX_MSG_RST)
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;
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if (flags & LINUX_MSG_ERRQUEUE)
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;
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#endif
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return ret_flags;
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}
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/*
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* If bsd_to_linux_sockaddr() or linux_to_bsd_sockaddr() faults, then the
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* native syscall will fault. Thus, we don't really need to check the
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* return values for these functions.
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*/
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static int
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bsd_to_linux_sockaddr(struct sockaddr *arg)
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{
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struct sockaddr sa;
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size_t sa_len = sizeof(struct sockaddr);
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int error;
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if ((error = copyin(arg, &sa, sa_len)))
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return (error);
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*(u_short *)&sa = sa.sa_family;
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error = copyout(&sa, arg, sa_len);
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return (error);
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}
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static int
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linux_to_bsd_sockaddr(struct sockaddr *arg, int len)
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{
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struct sockaddr sa;
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size_t sa_len = sizeof(struct sockaddr);
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int error;
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if ((error = copyin(arg, &sa, sa_len)))
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return (error);
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sa.sa_family = *(sa_family_t *)&sa;
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sa.sa_len = len;
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error = copyout(&sa, arg, sa_len);
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return (error);
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}
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|
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static int
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linux_sa_put(struct osockaddr *osa)
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{
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struct osockaddr sa;
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int error, bdom;
|
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|
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/*
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* Only read/write the osockaddr family part, the rest is
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* not changed.
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*/
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error = copyin(osa, &sa, sizeof(sa.sa_family));
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if (error)
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return (error);
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|
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bdom = bsd_to_linux_domain(sa.sa_family);
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if (bdom == -1)
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return (EINVAL);
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|
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sa.sa_family = bdom;
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error = copyout(&sa, osa, sizeof(sa.sa_family));
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if (error)
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return (error);
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|
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return (0);
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}
|
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|
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static int
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linux_to_bsd_cmsg_type(int cmsg_type)
|
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{
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|
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switch (cmsg_type) {
|
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case LINUX_SCM_RIGHTS:
|
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return (SCM_RIGHTS);
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case LINUX_SCM_CREDENTIALS:
|
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return (SCM_CREDS);
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}
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return (-1);
|
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}
|
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|
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static int
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bsd_to_linux_cmsg_type(int cmsg_type)
|
|
{
|
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|
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switch (cmsg_type) {
|
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case SCM_RIGHTS:
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return (LINUX_SCM_RIGHTS);
|
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case SCM_CREDS:
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return (LINUX_SCM_CREDENTIALS);
|
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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_msghdr(struct msghdr *bhdr, const struct l_msghdr *lhdr)
|
|
{
|
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if (lhdr->msg_controllen > INT_MAX)
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return (ENOBUFS);
|
|
|
|
bhdr->msg_name = PTRIN(lhdr->msg_name);
|
|
bhdr->msg_namelen = lhdr->msg_namelen;
|
|
bhdr->msg_iov = PTRIN(lhdr->msg_iov);
|
|
bhdr->msg_iovlen = lhdr->msg_iovlen;
|
|
bhdr->msg_control = PTRIN(lhdr->msg_control);
|
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|
|
/*
|
|
* msg_controllen is skipped since BSD and LINUX control messages
|
|
* are potentially different sizes (e.g. the cred structure used
|
|
* by SCM_CREDS is different between the two operating system).
|
|
*
|
|
* The caller can set it (if necessary) after converting all the
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* control messages.
|
|
*/
|
|
|
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bhdr->msg_flags = linux_to_bsd_msg_flags(lhdr->msg_flags);
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return (0);
|
|
}
|
|
|
|
static int
|
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bsd_to_linux_msghdr(const struct msghdr *bhdr, struct l_msghdr *lhdr)
|
|
{
|
|
lhdr->msg_name = PTROUT(bhdr->msg_name);
|
|
lhdr->msg_namelen = bhdr->msg_namelen;
|
|
lhdr->msg_iov = PTROUT(bhdr->msg_iov);
|
|
lhdr->msg_iovlen = bhdr->msg_iovlen;
|
|
lhdr->msg_control = PTROUT(bhdr->msg_control);
|
|
|
|
/*
|
|
* msg_controllen is skipped since BSD and LINUX control messages
|
|
* are potentially different sizes (e.g. the cred structure used
|
|
* by SCM_CREDS is different between the two operating system).
|
|
*
|
|
* The caller can set it (if necessary) after converting all the
|
|
* control messages.
|
|
*/
|
|
|
|
/* msg_flags skipped */
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
linux_set_socket_flags(struct thread *td, int s, int flags)
|
|
{
|
|
int error;
|
|
|
|
if (flags & LINUX_SOCK_NONBLOCK) {
|
|
error = kern_fcntl(td, s, F_SETFL, O_NONBLOCK);
|
|
if (error)
|
|
return (error);
|
|
}
|
|
if (flags & LINUX_SOCK_CLOEXEC) {
|
|
error = kern_fcntl(td, s, F_SETFD, FD_CLOEXEC);
|
|
if (error)
|
|
return (error);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
linux_sendit(struct thread *td, int s, struct msghdr *mp, int flags,
|
|
struct mbuf *control, enum uio_seg segflg)
|
|
{
|
|
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;
|
|
|
|
error = kern_sendit(td, s, mp, linux_to_bsd_msg_flags(flags), control,
|
|
segflg);
|
|
|
|
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,
|
|
NULL, 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 socket_args /* {
|
|
int domain;
|
|
int type;
|
|
int protocol;
|
|
} */ bsd_args;
|
|
int retval_socket, socket_flags;
|
|
|
|
bsd_args.protocol = args->protocol;
|
|
socket_flags = args->type & ~LINUX_SOCK_TYPE_MASK;
|
|
if (socket_flags & ~(LINUX_SOCK_CLOEXEC | LINUX_SOCK_NONBLOCK))
|
|
return (EINVAL);
|
|
bsd_args.type = args->type & LINUX_SOCK_TYPE_MASK;
|
|
if (bsd_args.type < 0 || bsd_args.type > LINUX_SOCK_MAX)
|
|
return (EINVAL);
|
|
bsd_args.domain = linux_to_bsd_domain(args->domain);
|
|
if (bsd_args.domain == -1)
|
|
return (EAFNOSUPPORT);
|
|
|
|
retval_socket = sys_socket(td, &bsd_args);
|
|
if (retval_socket)
|
|
return (retval_socket);
|
|
|
|
retval_socket = linux_set_socket_flags(td, td->td_retval[0],
|
|
socket_flags);
|
|
if (retval_socket) {
|
|
(void)kern_close(td, td->td_retval[0]);
|
|
goto out;
|
|
}
|
|
|
|
if (bsd_args.type == SOCK_RAW
|
|
&& (bsd_args.protocol == IPPROTO_RAW || bsd_args.protocol == 0)
|
|
&& bsd_args.domain == PF_INET) {
|
|
/* 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.
|
|
* For simplicity we do this unconditionally of the net.inet6.ip6.v6only
|
|
* sysctl value.
|
|
*/
|
|
if (bsd_args.domain == PF_INET6) {
|
|
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
|
|
|
|
out:
|
|
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 sockaddr *sa;
|
|
int error;
|
|
|
|
error = linux_getsockaddr(&sa, PTRIN(args->name),
|
|
args->namelen);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = kern_bind(td, args->s, sa);
|
|
free(sa, M_SONAME);
|
|
if (error == EADDRNOTAVAIL && 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 socket *so;
|
|
struct sockaddr *sa;
|
|
u_int fflag;
|
|
int error;
|
|
|
|
error = linux_getsockaddr(&sa, (struct osockaddr *)PTRIN(args->name),
|
|
args->namelen);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = kern_connect(td, 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, args->s, CAP_CONNECT, &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 listen_args /* {
|
|
int s;
|
|
int backlog;
|
|
} */ bsd_args;
|
|
|
|
bsd_args.s = args->s;
|
|
bsd_args.backlog = args->backlog;
|
|
return (sys_listen(td, &bsd_args));
|
|
}
|
|
|
|
static int
|
|
linux_accept_common(struct thread *td, int s, l_uintptr_t addr,
|
|
l_uintptr_t namelen, int flags)
|
|
{
|
|
struct accept_args /* {
|
|
int s;
|
|
struct sockaddr * __restrict name;
|
|
socklen_t * __restrict anamelen;
|
|
} */ bsd_args;
|
|
int error;
|
|
|
|
if (flags & ~(LINUX_SOCK_CLOEXEC | LINUX_SOCK_NONBLOCK))
|
|
return (EINVAL);
|
|
|
|
bsd_args.s = s;
|
|
/* XXX: */
|
|
bsd_args.name = (struct sockaddr * __restrict)PTRIN(addr);
|
|
bsd_args.anamelen = PTRIN(namelen);/* XXX */
|
|
error = sys_accept(td, &bsd_args);
|
|
bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.name);
|
|
if (error) {
|
|
if (error == EFAULT && namelen != sizeof(struct sockaddr_in))
|
|
return (EINVAL);
|
|
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
|
|
* and apply the requested flags.
|
|
*/
|
|
error = kern_fcntl(td, td->td_retval[0], F_SETFL, 0);
|
|
if (error)
|
|
goto out;
|
|
error = linux_set_socket_flags(td, td->td_retval[0], flags);
|
|
if (error)
|
|
goto out;
|
|
if (addr)
|
|
error = linux_sa_put(PTRIN(addr));
|
|
|
|
out:
|
|
if (error) {
|
|
(void)kern_close(td, td->td_retval[0]);
|
|
td->td_retval[0] = 0;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
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)
|
|
{
|
|
|
|
return (linux_accept_common(td, args->s, args->addr,
|
|
args->namelen, 0));
|
|
}
|
|
|
|
struct linux_accept4_args {
|
|
int s;
|
|
l_uintptr_t addr;
|
|
l_uintptr_t namelen;
|
|
int flags;
|
|
};
|
|
|
|
static int
|
|
linux_accept4(struct thread *td, struct linux_accept4_args *args)
|
|
{
|
|
|
|
return (linux_accept_common(td, args->s, args->addr,
|
|
args->namelen, args->flags));
|
|
}
|
|
|
|
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 getsockname_args /* {
|
|
int fdes;
|
|
struct sockaddr * __restrict asa;
|
|
socklen_t * __restrict alen;
|
|
} */ bsd_args;
|
|
int error;
|
|
|
|
bsd_args.fdes = args->s;
|
|
/* XXX: */
|
|
bsd_args.asa = (struct sockaddr * __restrict)PTRIN(args->addr);
|
|
bsd_args.alen = PTRIN(args->namelen); /* XXX */
|
|
error = sys_getsockname(td, &bsd_args);
|
|
bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.asa);
|
|
if (error)
|
|
return (error);
|
|
error = linux_sa_put(PTRIN(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 getpeername_args /* {
|
|
int fdes;
|
|
caddr_t asa;
|
|
int *alen;
|
|
} */ bsd_args;
|
|
int error;
|
|
|
|
bsd_args.fdes = args->s;
|
|
bsd_args.asa = (struct sockaddr *)PTRIN(args->addr);
|
|
bsd_args.alen = (int *)PTRIN(args->namelen);
|
|
error = sys_getpeername(td, &bsd_args);
|
|
bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.asa);
|
|
if (error)
|
|
return (error);
|
|
error = linux_sa_put(PTRIN(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 socketpair_args /* {
|
|
int domain;
|
|
int type;
|
|
int protocol;
|
|
int *rsv;
|
|
} */ bsd_args;
|
|
int error, socket_flags;
|
|
int sv[2];
|
|
|
|
bsd_args.domain = linux_to_bsd_domain(args->domain);
|
|
if (bsd_args.domain != PF_LOCAL)
|
|
return (EAFNOSUPPORT);
|
|
|
|
socket_flags = args->type & ~LINUX_SOCK_TYPE_MASK;
|
|
if (socket_flags & ~(LINUX_SOCK_CLOEXEC | LINUX_SOCK_NONBLOCK))
|
|
return (EINVAL);
|
|
bsd_args.type = args->type & LINUX_SOCK_TYPE_MASK;
|
|
if (bsd_args.type < 0 || bsd_args.type > LINUX_SOCK_MAX)
|
|
return (EINVAL);
|
|
|
|
if (args->protocol != 0 && args->protocol != PF_UNIX)
|
|
|
|
/*
|
|
* Use of PF_UNIX as protocol argument is not right,
|
|
* but Linux does it.
|
|
* Do not map PF_UNIX as its Linux value is identical
|
|
* to FreeBSD one.
|
|
*/
|
|
return (EPROTONOSUPPORT);
|
|
else
|
|
bsd_args.protocol = 0;
|
|
bsd_args.rsv = (int *)PTRIN(args->rsv);
|
|
error = kern_socketpair(td, bsd_args.domain, bsd_args.type,
|
|
bsd_args.protocol, sv);
|
|
if (error)
|
|
return (error);
|
|
error = linux_set_socket_flags(td, sv[0], socket_flags);
|
|
if (error)
|
|
goto out;
|
|
error = linux_set_socket_flags(td, sv[1], socket_flags);
|
|
if (error)
|
|
goto out;
|
|
|
|
error = copyout(sv, bsd_args.rsv, 2 * sizeof(int));
|
|
|
|
out:
|
|
if (error) {
|
|
(void)kern_close(td, sv[0]);
|
|
(void)kern_close(td, sv[1]);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
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 sendto_args /* {
|
|
int s;
|
|
caddr_t buf;
|
|
int len;
|
|
int flags;
|
|
caddr_t to;
|
|
int tolen;
|
|
} */ bsd_args;
|
|
|
|
bsd_args.s = args->s;
|
|
bsd_args.buf = (caddr_t)PTRIN(args->msg);
|
|
bsd_args.len = args->len;
|
|
bsd_args.flags = args->flags;
|
|
bsd_args.to = NULL;
|
|
bsd_args.tolen = 0;
|
|
return sys_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 recvfrom_args /* {
|
|
int s;
|
|
caddr_t buf;
|
|
int len;
|
|
int flags;
|
|
struct sockaddr *from;
|
|
socklen_t fromlenaddr;
|
|
} */ bsd_args;
|
|
|
|
bsd_args.s = args->s;
|
|
bsd_args.buf = (caddr_t)PTRIN(args->msg);
|
|
bsd_args.len = args->len;
|
|
bsd_args.flags = linux_to_bsd_msg_flags(args->flags);
|
|
bsd_args.from = NULL;
|
|
bsd_args.fromlenaddr = 0;
|
|
return (sys_recvfrom(td, &bsd_args));
|
|
}
|
|
|
|
static int
|
|
linux_sendto(struct thread *td, struct linux_sendto_args *args)
|
|
{
|
|
struct msghdr msg;
|
|
struct iovec aiov;
|
|
int error;
|
|
|
|
if (linux_check_hdrincl(td, args->s) == 0)
|
|
/* IP_HDRINCL set, tweak the packet before sending */
|
|
return (linux_sendto_hdrincl(td, args));
|
|
|
|
msg.msg_name = PTRIN(args->to);
|
|
msg.msg_namelen = args->tolen;
|
|
msg.msg_iov = &aiov;
|
|
msg.msg_iovlen = 1;
|
|
msg.msg_control = NULL;
|
|
msg.msg_flags = 0;
|
|
aiov.iov_base = PTRIN(args->msg);
|
|
aiov.iov_len = args->len;
|
|
error = linux_sendit(td, args->s, &msg, args->flags, NULL,
|
|
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 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(PTRIN(args->fromlen), &len, sizeof(size_t))))
|
|
return (error);
|
|
|
|
bsd_args.s = args->s;
|
|
bsd_args.buf = PTRIN(args->buf);
|
|
bsd_args.len = args->len;
|
|
bsd_args.flags = linux_to_bsd_msg_flags(args->flags);
|
|
/* XXX: */
|
|
bsd_args.from = (struct sockaddr * __restrict)PTRIN(args->from);
|
|
bsd_args.fromlenaddr = PTRIN(args->fromlen);/* XXX */
|
|
|
|
linux_to_bsd_sockaddr((struct sockaddr *)bsd_args.from, len);
|
|
error = sys_recvfrom(td, &bsd_args);
|
|
bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.from);
|
|
|
|
if (error)
|
|
return (error);
|
|
if (args->from) {
|
|
error = linux_sa_put((struct osockaddr *)
|
|
PTRIN(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 cmsghdr *cmsg;
|
|
struct cmsgcred cmcred;
|
|
struct mbuf *control;
|
|
struct msghdr msg;
|
|
struct l_cmsghdr linux_cmsg;
|
|
struct l_cmsghdr *ptr_cmsg;
|
|
struct l_msghdr linux_msg;
|
|
struct iovec *iov;
|
|
socklen_t datalen;
|
|
struct sockaddr *sa;
|
|
sa_family_t sa_family;
|
|
void *data;
|
|
int error;
|
|
|
|
error = copyin(PTRIN(args->msg), &linux_msg, sizeof(linux_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 (PTRIN(linux_msg.msg_control) != NULL && linux_msg.msg_controllen == 0)
|
|
linux_msg.msg_control = PTROUT(NULL);
|
|
|
|
error = linux_to_bsd_msghdr(&msg, &linux_msg);
|
|
if (error)
|
|
return (error);
|
|
|
|
#ifdef COMPAT_LINUX32
|
|
error = linux32_copyiniov(PTRIN(msg.msg_iov), msg.msg_iovlen,
|
|
&iov, EMSGSIZE);
|
|
#else
|
|
error = copyiniov(msg.msg_iov, msg.msg_iovlen, &iov, EMSGSIZE);
|
|
#endif
|
|
if (error)
|
|
return (error);
|
|
|
|
control = NULL;
|
|
cmsg = NULL;
|
|
|
|
if ((ptr_cmsg = LINUX_CMSG_FIRSTHDR(&linux_msg)) != NULL) {
|
|
error = kern_getsockname(td, args->s, &sa, &datalen);
|
|
if (error)
|
|
goto bad;
|
|
sa_family = sa->sa_family;
|
|
free(sa, M_SONAME);
|
|
|
|
error = ENOBUFS;
|
|
cmsg = malloc(CMSG_HDRSZ, M_TEMP, M_WAITOK | M_ZERO);
|
|
control = m_get(M_WAITOK, MT_CONTROL);
|
|
if (control == NULL)
|
|
goto bad;
|
|
|
|
do {
|
|
error = copyin(ptr_cmsg, &linux_cmsg,
|
|
sizeof(struct l_cmsghdr));
|
|
if (error)
|
|
goto bad;
|
|
|
|
error = EINVAL;
|
|
if (linux_cmsg.cmsg_len < sizeof(struct l_cmsghdr))
|
|
goto bad;
|
|
|
|
/*
|
|
* Now we support only SCM_RIGHTS and SCM_CRED,
|
|
* so return EINVAL in any other cmsg_type
|
|
*/
|
|
cmsg->cmsg_type =
|
|
linux_to_bsd_cmsg_type(linux_cmsg.cmsg_type);
|
|
cmsg->cmsg_level =
|
|
linux_to_bsd_sockopt_level(linux_cmsg.cmsg_level);
|
|
if (cmsg->cmsg_type == -1
|
|
|| cmsg->cmsg_level != SOL_SOCKET)
|
|
goto bad;
|
|
|
|
/*
|
|
* Some applications (e.g. pulseaudio) attempt to
|
|
* send ancillary data even if the underlying protocol
|
|
* doesn't support it which is not allowed in the
|
|
* FreeBSD system call interface.
|
|
*/
|
|
if (sa_family != AF_UNIX)
|
|
continue;
|
|
|
|
data = LINUX_CMSG_DATA(ptr_cmsg);
|
|
datalen = linux_cmsg.cmsg_len - L_CMSG_HDRSZ;
|
|
|
|
switch (cmsg->cmsg_type)
|
|
{
|
|
case SCM_RIGHTS:
|
|
break;
|
|
|
|
case SCM_CREDS:
|
|
data = &cmcred;
|
|
datalen = sizeof(cmcred);
|
|
|
|
/*
|
|
* The lower levels will fill in the structure
|
|
*/
|
|
bzero(data, datalen);
|
|
break;
|
|
}
|
|
|
|
cmsg->cmsg_len = CMSG_LEN(datalen);
|
|
|
|
error = ENOBUFS;
|
|
if (!m_append(control, CMSG_HDRSZ, (c_caddr_t)cmsg))
|
|
goto bad;
|
|
if (!m_append(control, datalen, (c_caddr_t)data))
|
|
goto bad;
|
|
} while ((ptr_cmsg = LINUX_CMSG_NXTHDR(&linux_msg, ptr_cmsg)));
|
|
|
|
if (m_length(control, NULL) == 0) {
|
|
m_freem(control);
|
|
control = NULL;
|
|
}
|
|
}
|
|
|
|
msg.msg_iov = iov;
|
|
msg.msg_flags = 0;
|
|
error = linux_sendit(td, args->s, &msg, args->flags, control,
|
|
UIO_USERSPACE);
|
|
|
|
bad:
|
|
free(iov, M_IOV);
|
|
if (cmsg)
|
|
free(cmsg, M_TEMP);
|
|
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 cmsghdr *cm;
|
|
struct cmsgcred *cmcred;
|
|
struct msghdr msg;
|
|
struct l_cmsghdr *linux_cmsg = NULL;
|
|
struct l_ucred linux_ucred;
|
|
socklen_t datalen, outlen;
|
|
struct l_msghdr linux_msg;
|
|
struct iovec *iov, *uiov;
|
|
struct mbuf *control = NULL;
|
|
struct mbuf **controlp;
|
|
caddr_t outbuf;
|
|
void *data;
|
|
int error, i, fd, fds, *fdp;
|
|
|
|
error = copyin(PTRIN(args->msg), &linux_msg, sizeof(linux_msg));
|
|
if (error)
|
|
return (error);
|
|
|
|
error = linux_to_bsd_msghdr(&msg, &linux_msg);
|
|
if (error)
|
|
return (error);
|
|
|
|
#ifdef COMPAT_LINUX32
|
|
error = linux32_copyiniov(PTRIN(msg.msg_iov), msg.msg_iovlen,
|
|
&iov, EMSGSIZE);
|
|
#else
|
|
error = copyiniov(msg.msg_iov, msg.msg_iovlen, &iov, EMSGSIZE);
|
|
#endif
|
|
if (error)
|
|
return (error);
|
|
|
|
if (msg.msg_name) {
|
|
error = linux_to_bsd_sockaddr((struct sockaddr *)msg.msg_name,
|
|
msg.msg_namelen);
|
|
if (error)
|
|
goto bad;
|
|
}
|
|
|
|
uiov = msg.msg_iov;
|
|
msg.msg_iov = iov;
|
|
controlp = (msg.msg_control != NULL) ? &control : NULL;
|
|
error = kern_recvit(td, args->s, &msg, UIO_USERSPACE, controlp);
|
|
msg.msg_iov = uiov;
|
|
if (error)
|
|
goto bad;
|
|
|
|
error = bsd_to_linux_msghdr(&msg, &linux_msg);
|
|
if (error)
|
|
goto bad;
|
|
|
|
if (linux_msg.msg_name) {
|
|
error = bsd_to_linux_sockaddr((struct sockaddr *)
|
|
PTRIN(linux_msg.msg_name));
|
|
if (error)
|
|
goto bad;
|
|
}
|
|
if (linux_msg.msg_name && linux_msg.msg_namelen > 2) {
|
|
error = linux_sa_put(PTRIN(linux_msg.msg_name));
|
|
if (error)
|
|
goto bad;
|
|
}
|
|
|
|
outbuf = PTRIN(linux_msg.msg_control);
|
|
outlen = 0;
|
|
|
|
if (control) {
|
|
linux_cmsg = malloc(L_CMSG_HDRSZ, M_TEMP, M_WAITOK | M_ZERO);
|
|
|
|
msg.msg_control = mtod(control, struct cmsghdr *);
|
|
msg.msg_controllen = control->m_len;
|
|
|
|
cm = CMSG_FIRSTHDR(&msg);
|
|
|
|
while (cm != NULL) {
|
|
linux_cmsg->cmsg_type =
|
|
bsd_to_linux_cmsg_type(cm->cmsg_type);
|
|
linux_cmsg->cmsg_level =
|
|
bsd_to_linux_sockopt_level(cm->cmsg_level);
|
|
if (linux_cmsg->cmsg_type == -1
|
|
|| cm->cmsg_level != SOL_SOCKET)
|
|
{
|
|
error = EINVAL;
|
|
goto bad;
|
|
}
|
|
|
|
data = CMSG_DATA(cm);
|
|
datalen = (caddr_t)cm + cm->cmsg_len - (caddr_t)data;
|
|
|
|
switch (cm->cmsg_type)
|
|
{
|
|
case SCM_RIGHTS:
|
|
if (args->flags & LINUX_MSG_CMSG_CLOEXEC) {
|
|
fds = datalen / sizeof(int);
|
|
fdp = data;
|
|
for (i = 0; i < fds; i++) {
|
|
fd = *fdp++;
|
|
(void)kern_fcntl(td, fd,
|
|
F_SETFD, FD_CLOEXEC);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case SCM_CREDS:
|
|
/*
|
|
* Currently LOCAL_CREDS is never in
|
|
* effect for Linux so no need to worry
|
|
* about sockcred
|
|
*/
|
|
if (datalen != sizeof(*cmcred)) {
|
|
error = EMSGSIZE;
|
|
goto bad;
|
|
}
|
|
cmcred = (struct cmsgcred *)data;
|
|
bzero(&linux_ucred, sizeof(linux_ucred));
|
|
linux_ucred.pid = cmcred->cmcred_pid;
|
|
linux_ucred.uid = cmcred->cmcred_uid;
|
|
linux_ucred.gid = cmcred->cmcred_gid;
|
|
data = &linux_ucred;
|
|
datalen = sizeof(linux_ucred);
|
|
break;
|
|
}
|
|
|
|
if (outlen + LINUX_CMSG_LEN(datalen) >
|
|
linux_msg.msg_controllen) {
|
|
if (outlen == 0) {
|
|
error = EMSGSIZE;
|
|
goto bad;
|
|
} else {
|
|
linux_msg.msg_flags |=
|
|
LINUX_MSG_CTRUNC;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
linux_cmsg->cmsg_len = LINUX_CMSG_LEN(datalen);
|
|
|
|
error = copyout(linux_cmsg, outbuf, L_CMSG_HDRSZ);
|
|
if (error)
|
|
goto bad;
|
|
outbuf += L_CMSG_HDRSZ;
|
|
|
|
error = copyout(data, outbuf, datalen);
|
|
if (error)
|
|
goto bad;
|
|
|
|
outbuf += LINUX_CMSG_ALIGN(datalen);
|
|
outlen += LINUX_CMSG_LEN(datalen);
|
|
|
|
cm = CMSG_NXTHDR(&msg, cm);
|
|
}
|
|
}
|
|
|
|
out:
|
|
linux_msg.msg_controllen = outlen;
|
|
error = copyout(&linux_msg, PTRIN(args->msg), sizeof(linux_msg));
|
|
|
|
bad:
|
|
free(iov, M_IOV);
|
|
m_freem(control);
|
|
free(linux_cmsg, M_TEMP);
|
|
|
|
return (error);
|
|
}
|
|
|
|
struct linux_shutdown_args {
|
|
int s;
|
|
int how;
|
|
};
|
|
|
|
static int
|
|
linux_shutdown(struct thread *td, struct linux_shutdown_args *args)
|
|
{
|
|
struct shutdown_args /* {
|
|
int s;
|
|
int how;
|
|
} */ bsd_args;
|
|
|
|
bsd_args.s = args->s;
|
|
bsd_args.how = args->how;
|
|
return (sys_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 setsockopt_args /* {
|
|
int s;
|
|
int level;
|
|
int name;
|
|
caddr_t val;
|
|
int valsize;
|
|
} */ bsd_args;
|
|
l_timeval linux_tv;
|
|
struct timeval tv;
|
|
int error, name;
|
|
|
|
bsd_args.s = args->s;
|
|
bsd_args.level = linux_to_bsd_sockopt_level(args->level);
|
|
switch (bsd_args.level) {
|
|
case SOL_SOCKET:
|
|
name = linux_to_bsd_so_sockopt(args->optname);
|
|
switch (name) {
|
|
case SO_RCVTIMEO:
|
|
/* FALLTHROUGH */
|
|
case SO_SNDTIMEO:
|
|
error = copyin(PTRIN(args->optval), &linux_tv,
|
|
sizeof(linux_tv));
|
|
if (error)
|
|
return (error);
|
|
tv.tv_sec = linux_tv.tv_sec;
|
|
tv.tv_usec = linux_tv.tv_usec;
|
|
return (kern_setsockopt(td, args->s, bsd_args.level,
|
|
name, &tv, UIO_SYSSPACE, sizeof(tv)));
|
|
/* NOTREACHED */
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
case IPPROTO_IP:
|
|
name = linux_to_bsd_ip_sockopt(args->optname);
|
|
break;
|
|
case IPPROTO_TCP:
|
|
name = linux_to_bsd_tcp_sockopt(args->optname);
|
|
break;
|
|
default:
|
|
name = -1;
|
|
break;
|
|
}
|
|
if (name == -1)
|
|
return (ENOPROTOOPT);
|
|
|
|
bsd_args.name = name;
|
|
bsd_args.val = PTRIN(args->optval);
|
|
bsd_args.valsize = args->optlen;
|
|
|
|
if (name == IPV6_NEXTHOP) {
|
|
linux_to_bsd_sockaddr((struct sockaddr *)bsd_args.val,
|
|
bsd_args.valsize);
|
|
error = sys_setsockopt(td, &bsd_args);
|
|
bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.val);
|
|
} else
|
|
error = sys_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 getsockopt_args /* {
|
|
int s;
|
|
int level;
|
|
int name;
|
|
caddr_t val;
|
|
int *avalsize;
|
|
} */ bsd_args;
|
|
l_timeval linux_tv;
|
|
struct timeval tv;
|
|
socklen_t tv_len, xulen;
|
|
struct xucred xu;
|
|
struct l_ucred lxu;
|
|
int error, name;
|
|
|
|
bsd_args.s = args->s;
|
|
bsd_args.level = linux_to_bsd_sockopt_level(args->level);
|
|
switch (bsd_args.level) {
|
|
case SOL_SOCKET:
|
|
name = linux_to_bsd_so_sockopt(args->optname);
|
|
switch (name) {
|
|
case SO_RCVTIMEO:
|
|
/* FALLTHROUGH */
|
|
case SO_SNDTIMEO:
|
|
tv_len = sizeof(tv);
|
|
error = kern_getsockopt(td, args->s, bsd_args.level,
|
|
name, &tv, UIO_SYSSPACE, &tv_len);
|
|
if (error)
|
|
return (error);
|
|
linux_tv.tv_sec = tv.tv_sec;
|
|
linux_tv.tv_usec = tv.tv_usec;
|
|
return (copyout(&linux_tv, PTRIN(args->optval),
|
|
sizeof(linux_tv)));
|
|
/* NOTREACHED */
|
|
break;
|
|
case LOCAL_PEERCRED:
|
|
if (args->optlen != sizeof(lxu))
|
|
return (EINVAL);
|
|
xulen = sizeof(xu);
|
|
error = kern_getsockopt(td, args->s, bsd_args.level,
|
|
name, &xu, UIO_SYSSPACE, &xulen);
|
|
if (error)
|
|
return (error);
|
|
/*
|
|
* XXX Use 0 for pid as the FreeBSD does not cache peer pid.
|
|
*/
|
|
lxu.pid = 0;
|
|
lxu.uid = xu.cr_uid;
|
|
lxu.gid = xu.cr_gid;
|
|
return (copyout(&lxu, PTRIN(args->optval), sizeof(lxu)));
|
|
/* NOTREACHED */
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
case IPPROTO_IP:
|
|
name = linux_to_bsd_ip_sockopt(args->optname);
|
|
break;
|
|
case IPPROTO_TCP:
|
|
name = linux_to_bsd_tcp_sockopt(args->optname);
|
|
break;
|
|
default:
|
|
name = -1;
|
|
break;
|
|
}
|
|
if (name == -1)
|
|
return (EINVAL);
|
|
|
|
bsd_args.name = name;
|
|
bsd_args.val = PTRIN(args->optval);
|
|
bsd_args.avalsize = PTRIN(args->optlen);
|
|
|
|
if (name == IPV6_NEXTHOP) {
|
|
error = sys_getsockopt(td, &bsd_args);
|
|
bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.val);
|
|
} else
|
|
error = sys_getsockopt(td, &bsd_args);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/* Argument list sizes for linux_socketcall */
|
|
|
|
#define LINUX_AL(x) ((x) * sizeof(l_ulong))
|
|
|
|
static const unsigned char lxs_args[] = {
|
|
LINUX_AL(0) /* unused*/, LINUX_AL(3) /* socket */,
|
|
LINUX_AL(3) /* bind */, LINUX_AL(3) /* connect */,
|
|
LINUX_AL(2) /* listen */, LINUX_AL(3) /* accept */,
|
|
LINUX_AL(3) /* getsockname */, LINUX_AL(3) /* getpeername */,
|
|
LINUX_AL(4) /* socketpair */, LINUX_AL(4) /* send */,
|
|
LINUX_AL(4) /* recv */, LINUX_AL(6) /* sendto */,
|
|
LINUX_AL(6) /* recvfrom */, LINUX_AL(2) /* shutdown */,
|
|
LINUX_AL(5) /* setsockopt */, LINUX_AL(5) /* getsockopt */,
|
|
LINUX_AL(3) /* sendmsg */, LINUX_AL(3) /* recvmsg */,
|
|
LINUX_AL(4) /* accept4 */
|
|
};
|
|
|
|
#define LINUX_AL_SIZE sizeof(lxs_args) / sizeof(lxs_args[0]) - 1
|
|
|
|
int
|
|
linux_socketcall(struct thread *td, struct linux_socketcall_args *args)
|
|
{
|
|
l_ulong a[6];
|
|
void *arg;
|
|
int error;
|
|
|
|
if (args->what < LINUX_SOCKET || args->what > LINUX_AL_SIZE)
|
|
return (EINVAL);
|
|
error = copyin(PTRIN(args->args), a, lxs_args[args->what]);
|
|
if (error)
|
|
return (error);
|
|
|
|
arg = a;
|
|
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));
|
|
case LINUX_ACCEPT4:
|
|
return (linux_accept4(td, arg));
|
|
}
|
|
|
|
uprintf("LINUX: 'socket' typ=%d not implemented\n", args->what);
|
|
return (ENOSYS);
|
|
}
|