2 * Copyright (c) 1998 Mark Newton
3 * Copyright (c) 1996 Christos Zoulas.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Christos Zoulas.
17 * 4. The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 * $FreeBSD: src/sys/svr4/svr4_socket.c,v 1.7 1999/12/08 12:00:48 newton Exp $
32 * $DragonFly: src/sys/emulation/svr4/Attic/svr4_socket.c,v 1.6 2004/08/02 13:22:32 joerg Exp $
36 * In SVR4 unix domain sockets are referenced sometimes
37 * (in putmsg(2) for example) as a [device, inode] pair instead of a pathname.
38 * Since there is no iname() routine in the kernel, and we need access to
39 * a mapping from inode to pathname, we keep our own table. This is a simple
40 * linked list that contains the pathname, the [device, inode] pair, the
41 * file corresponding to that socket and the process. When the
42 * socket gets closed we remove the item from the list. The list gets loaded
43 * every time a stat(2) call finds a socket.
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/queue.h>
50 #include <sys/socket.h>
51 #include <sys/socketvar.h>
52 #include <sys/sysproto.h>
56 #include <sys/malloc.h>
59 #include "svr4_types.h"
60 #include "svr4_util.h"
61 #include "svr4_socket.h"
62 #include "svr4_signal.h"
63 #include "svr4_sockmod.h"
64 #include "svr4_proto.h"
66 struct svr4_sockcache_entry {
67 struct thread *td; /* Process for the socket */
68 void *cookie; /* Internal cookie used for matching */
69 struct sockaddr_un sock;/* Pathname for the socket */
70 udev_t dev; /* Device where the socket lives on */
71 ino_t ino; /* Inode where the socket lives on */
72 TAILQ_ENTRY(svr4_sockcache_entry) entries;
75 extern TAILQ_HEAD(svr4_sockcache_head, svr4_sockcache_entry) svr4_head;
76 extern int svr4_str_initialized;
79 svr4_find_socket(td, fp, dev, ino)
85 struct svr4_sockcache_entry *e;
86 void *cookie = ((struct socket *) fp->f_data)->so_emuldata;
88 if (!svr4_str_initialized) {
89 DPRINTF(("svr4_find_socket: uninitialized [%p,%d,%d]\n",
91 TAILQ_INIT(&svr4_head);
92 svr4_str_initialized = 1;
97 DPRINTF(("svr4_find_socket: [%p,%d,%d]: ", td, dev, ino));
98 TAILQ_FOREACH(e, &svr4_head, entries)
99 if (e->td == td && e->dev == dev && e->ino == ino) {
101 if (e->cookie != NULL && e->cookie != cookie)
102 panic("svr4 socket cookie mismatch");
105 DPRINTF(("%s\n", e->sock.sun_path));
109 DPRINTF(("not found\n"));
115 * svr4_delete_socket() is in sys/dev/streams.c (because it's called by
116 * the streams "soo_close()" routine).
119 svr4_add_socket(td, path, st)
124 struct svr4_sockcache_entry *e;
127 if (!svr4_str_initialized) {
128 TAILQ_INIT(&svr4_head);
129 svr4_str_initialized = 1;
132 e = malloc(sizeof(*e), M_TEMP, M_WAITOK);
138 if ((error = copyinstr(path, e->sock.sun_path,
139 sizeof(e->sock.sun_path), &len)) != 0) {
140 DPRINTF(("svr4_add_socket: copyinstr failed %d\n", error));
145 e->sock.sun_family = AF_LOCAL;
146 e->sock.sun_len = len;
148 TAILQ_INSERT_HEAD(&svr4_head, e, entries);
149 DPRINTF(("svr4_add_socket: %s [%p,%d,%d]\n", e->sock.sun_path,
150 td, e->dev, e->ino));
156 svr4_sys_socket(struct svr4_sys_socket_args *uap)
158 switch (SCARG(uap, type)) {
159 case SVR4_SOCK_DGRAM:
160 SCARG(uap, type) = SOCK_DGRAM;
163 case SVR4_SOCK_STREAM:
164 SCARG(uap, type) = SOCK_STREAM;
168 SCARG(uap, type) = SOCK_RAW;
172 SCARG(uap, type) = SOCK_RDM;
175 case SVR4_SOCK_SEQPACKET:
176 SCARG(uap, type) = SOCK_SEQPACKET;
181 return socket((struct socket_args *)uap);