a78062784c
least Linux 2.4.31, Irix 6.5.20 and Solaris 10) use EAFNOSUPPORT. Only the Linux emulation has been tested. XXX somebody should audit the other emulations...
220 lines
6.2 KiB
C
220 lines
6.2 KiB
C
/* $NetBSD: svr4_socket.c,v 1.14 2006/06/27 09:09:40 pavel Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1996 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Christos Zoulas.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* In SVR4 unix domain sockets are referenced sometimes
|
|
* (in putmsg(2) for example) as a [device, inode] pair instead of a pathname.
|
|
* Since there is no iname() routine in the kernel, and we need access to
|
|
* a mapping from inode to pathname, we keep our own table. This is a simple
|
|
* linked list that contains the pathname, the [device, inode] pair, the
|
|
* file corresponding to that socket and the process. When the
|
|
* socket gets closed we remove the item from the list. The list gets loaded
|
|
* every time a stat(2) call finds a socket.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: svr4_socket.c,v 1.14 2006/06/27 09:09:40 pavel Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/queue.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/file.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/socketvar.h>
|
|
#include <sys/sa.h>
|
|
#include <sys/syscallargs.h>
|
|
#include <sys/un.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include <compat/svr4/svr4_types.h>
|
|
#include <compat/svr4/svr4_util.h>
|
|
#include <compat/svr4/svr4_socket.h>
|
|
#include <compat/svr4/svr4_signal.h>
|
|
#include <compat/svr4/svr4_sockmod.h>
|
|
#include <compat/svr4/svr4_lwp.h>
|
|
#include <compat/svr4/svr4_ucontext.h>
|
|
#include <compat/svr4/svr4_syscallargs.h>
|
|
|
|
struct svr4_sockcache_entry {
|
|
struct proc *p; /* Process for the socket */
|
|
void *cookie; /* Internal cookie used for matching */
|
|
struct sockaddr_un sock;/* Pathname for the socket */
|
|
dev_t dev; /* Device where the socket lives on */
|
|
svr4_ino_t ino; /* Inode where the socket lives on */
|
|
TAILQ_ENTRY(svr4_sockcache_entry) entries;
|
|
};
|
|
|
|
static TAILQ_HEAD(svr4_sockcache_head, svr4_sockcache_entry) svr4_head;
|
|
static int initialized = 0;
|
|
|
|
struct sockaddr_un *
|
|
svr4_find_socket(p, fp, dev, ino)
|
|
struct proc *p;
|
|
struct file *fp;
|
|
dev_t dev;
|
|
svr4_ino_t ino;
|
|
{
|
|
struct svr4_sockcache_entry *e;
|
|
void *cookie = ((struct socket *) fp->f_data)->so_internal;
|
|
|
|
if (!initialized) {
|
|
DPRINTF(("svr4_find_socket: uninitialized [%p,%d,%d]\n",
|
|
p, dev, ino));
|
|
TAILQ_INIT(&svr4_head);
|
|
initialized = 1;
|
|
return NULL;
|
|
}
|
|
|
|
|
|
DPRINTF(("svr4_find_socket: [%p,%d,%d]: ", p, dev, ino));
|
|
for (e = svr4_head.tqh_first; e != NULL; e = e->entries.tqe_next)
|
|
if (e->p == p && e->dev == dev && e->ino == ino) {
|
|
#ifdef DIAGNOSTIC
|
|
if (e->cookie != NULL && e->cookie != cookie)
|
|
panic("svr4 socket cookie mismatch");
|
|
#endif
|
|
e->cookie = cookie;
|
|
DPRINTF(("%s\n", e->sock.sun_path));
|
|
return &e->sock;
|
|
}
|
|
|
|
DPRINTF(("not found\n"));
|
|
return NULL;
|
|
}
|
|
|
|
|
|
void
|
|
svr4_delete_socket(p, fp)
|
|
struct proc *p;
|
|
struct file *fp;
|
|
{
|
|
struct svr4_sockcache_entry *e;
|
|
void *cookie = ((struct socket *) fp->f_data)->so_internal;
|
|
|
|
if (!initialized) {
|
|
TAILQ_INIT(&svr4_head);
|
|
initialized = 1;
|
|
return;
|
|
}
|
|
|
|
for (e = svr4_head.tqh_first; e != NULL; e = e->entries.tqe_next)
|
|
if (e->p == p && e->cookie == cookie) {
|
|
TAILQ_REMOVE(&svr4_head, e, entries);
|
|
DPRINTF(("svr4_delete_socket: %s [%p,%d,%d]\n",
|
|
e->sock.sun_path, p, e->dev, e->ino));
|
|
free(e, M_TEMP);
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
int
|
|
svr4_add_socket(p, path, st)
|
|
struct proc *p;
|
|
const char *path;
|
|
struct stat *st;
|
|
{
|
|
struct svr4_sockcache_entry *e;
|
|
size_t len;
|
|
int error;
|
|
|
|
if (!initialized) {
|
|
TAILQ_INIT(&svr4_head);
|
|
initialized = 1;
|
|
}
|
|
|
|
e = malloc(sizeof(*e), M_TEMP, M_WAITOK);
|
|
e->cookie = NULL;
|
|
e->dev = st->st_dev;
|
|
e->ino = st->st_ino;
|
|
e->p = p;
|
|
|
|
if ((error = copyinstr(path, e->sock.sun_path,
|
|
sizeof(e->sock.sun_path), &len)) != 0) {
|
|
DPRINTF(("svr4_add_socket: copyinstr failed %d\n", error));
|
|
free(e, M_TEMP);
|
|
return error;
|
|
}
|
|
|
|
e->sock.sun_family = AF_LOCAL;
|
|
e->sock.sun_len = len;
|
|
|
|
TAILQ_INSERT_HEAD(&svr4_head, e, entries);
|
|
DPRINTF(("svr4_add_socket: %s [%p,%d,%d]\n", e->sock.sun_path,
|
|
p, e->dev, e->ino));
|
|
return 0;
|
|
}
|
|
|
|
|
|
int
|
|
svr4_sys_socket(l, v, retval)
|
|
struct lwp *l;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct svr4_sys_socket_args *uap = v;
|
|
|
|
switch (SCARG(uap, type)) {
|
|
case SVR4_SOCK_DGRAM:
|
|
SCARG(uap, type) = SOCK_DGRAM;
|
|
break;
|
|
|
|
case SVR4_SOCK_STREAM:
|
|
SCARG(uap, type) = SOCK_STREAM;
|
|
break;
|
|
|
|
case SVR4_SOCK_RAW:
|
|
SCARG(uap, type) = SOCK_RAW;
|
|
break;
|
|
|
|
case SVR4_SOCK_RDM:
|
|
SCARG(uap, type) = SOCK_RDM;
|
|
break;
|
|
|
|
case SVR4_SOCK_SEQPACKET:
|
|
SCARG(uap, type) = SOCK_SEQPACKET;
|
|
break;
|
|
default:
|
|
return EINVAL;
|
|
}
|
|
return sys___socket30(l, uap, retval);
|
|
}
|