2 * Copyright (c) 1998 Mark Newton
3 * Copyright (c) 1994 Christos Zoulas
4 * Copyright (c) 1997 Todd Vierling
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The names of the authors may not be used to endorse or promote products
16 * derived from this software without specific prior written permission
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 * Stolen from NetBSD /sys/compat/svr4/svr4_net.c. Pseudo-device driver
30 * skeleton produced from /usr/share/examples/drivers/make_pseudo_driver.sh
31 * in 3.0-980524-SNAP then hacked a bit (but probably not enough :-).
33 * $FreeBSD: src/sys/dev/streams/streams.c,v 1.16.2.1 2001/02/26 04:23:07 jlemon Exp $
34 * $DragonFly: src/sys/dev/misc/streams/Attic/streams.c,v 1.11 2004/05/13 23:49:17 dillon Exp $
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h> /* SYSINIT stuff */
40 #include <sys/conf.h> /* cdevsw stuff */
41 #include <sys/malloc.h> /* malloc region definitions */
43 #include <sys/filedesc.h>
44 #include <sys/unistd.h>
45 #include <sys/fcntl.h>
46 #include <sys/socket.h>
47 #include <sys/protosw.h>
48 #include <sys/socketvar.h>
50 #include <sys/domain.h>
52 #include <netinet/in.h>
56 #include <sys/sysproto.h>
58 #include <emulation/svr4/svr4_types.h>
59 #include <emulation/svr4/svr4_util.h>
60 #include <emulation/svr4/svr4_signal.h>
61 #include <emulation/svr4/svr4_ioctl.h>
62 #include <emulation/svr4/svr4_stropts.h>
63 #include <emulation/svr4/svr4_socket.h>
65 static int svr4_soo_close (struct file *, struct thread *);
66 static int svr4_ptm_alloc (struct thread *);
67 static d_open_t streamsopen;
69 struct svr4_sockcache_entry {
70 struct thread *td; /* Thread for the socket */
71 void *cookie; /* Internal cookie used for matching */
72 struct sockaddr_un sock;/* Pathname for the socket */
73 dev_t dev; /* Device where the socket lives on */
74 ino_t ino; /* Inode where the socket lives on */
75 TAILQ_ENTRY(svr4_sockcache_entry) entries;
78 TAILQ_HEAD(svr4_sockcache_head, svr4_sockcache_entry) svr4_head;
80 /* Initialization flag (set/queried by svr4_mod LKM) */
81 int svr4_str_initialized = 0;
84 * Device minor numbers
96 dev_unix_ord_stream = 40
99 dev_t dt_ptm, dt_arp, dt_icmp, dt_ip, dt_tcp, dt_udp, dt_rawip,
100 dt_unix_dgram, dt_unix_stream, dt_unix_ord_stream;
102 static struct fileops svr4_netops = {
105 soo_read, soo_write, soo_ioctl, soo_poll, sokqfilter,
106 soo_stat, svr4_soo_close
109 #define CDEV_MAJOR 103
110 static struct cdevsw streams_cdevsw = {
111 /* name */ "streams",
112 /* maj */ CDEV_MAJOR,
117 /* open */ streamsopen,
124 /* strategy */ nostrategy,
129 struct streams_softc {
130 struct isa_device *dev;
133 #define UNIT(dev) minor(dev) /* assume one minor number per unit */
135 typedef struct streams_softc *sc_p;
138 streams_modevent(module_t mod, int type, void *unused)
142 /* XXX should make sure it isn't already loaded first */
143 dt_ptm = make_dev(&streams_cdevsw, dev_ptm, 0, 0, 0666,
145 dt_arp = make_dev(&streams_cdevsw, dev_arp, 0, 0, 0666,
147 dt_icmp = make_dev(&streams_cdevsw, dev_icmp, 0, 0, 0666,
149 dt_ip = make_dev(&streams_cdevsw, dev_ip, 0, 0, 0666,
151 dt_tcp = make_dev(&streams_cdevsw, dev_tcp, 0, 0, 0666,
153 dt_udp = make_dev(&streams_cdevsw, dev_udp, 0, 0, 0666,
155 dt_rawip = make_dev(&streams_cdevsw, dev_rawip, 0, 0, 0666,
157 dt_unix_dgram = make_dev(&streams_cdevsw, dev_unix_dgram,
158 0, 0, 0666, "ticlts");
159 dt_unix_stream = make_dev(&streams_cdevsw, dev_unix_stream,
160 0, 0, 0666, "ticots");
161 dt_unix_ord_stream = make_dev(&streams_cdevsw,
162 dev_unix_ord_stream, 0, 0, 0666, "ticotsord");
164 if (! (dt_ptm && dt_arp && dt_icmp && dt_ip && dt_tcp &&
165 dt_udp && dt_rawip && dt_unix_dgram &&
166 dt_unix_stream && dt_unix_ord_stream)) {
167 printf("WARNING: device config for STREAMS failed\n");
168 printf("Suggest unloading streams KLD\n");
172 /* XXX should check to see if it's busy first */
175 destroy_dev(dt_icmp);
179 destroy_dev(dt_rawip);
180 destroy_dev(dt_unix_dgram);
181 destroy_dev(dt_unix_stream);
182 destroy_dev(dt_unix_ord_stream);
191 static moduledata_t streams_mod = {
196 DECLARE_MODULE(streams, streams_mod, SI_SUB_DRIVERS, SI_ORDER_ANY);
199 * We only need open() and close() routines. open() calls socreate()
200 * to allocate a "real" object behind the stream and mallocs some state
201 * info for use by the svr4 emulator; close() deallocates the state
202 * information and passes the underlying object to the normal socket close
206 streamsopen(dev_t dev, int oflags, int devtype, d_thread_t *td)
208 struct proc *p = td->td_proc;
221 switch (minor(dev)) {
225 protocol = IPPROTO_UDP;
231 protocol = IPPROTO_TCP;
238 protocol = IPPROTO_IP;
244 protocol = IPPROTO_ICMP;
253 case dev_unix_stream:
254 case dev_unix_ord_stream:
261 return svr4_ptm_alloc(td);
267 if ((error = falloc(p, &fp, &fd)) != 0)
270 if ((error = socreate(family, &so, type, protocol, td)) != 0) {
271 p->p_fd->fd_ofiles[fd] = 0;
276 fp->f_data = (caddr_t)so;
277 fp->f_flag = FREAD|FWRITE;
278 fp->f_ops = &svr4_netops;
279 fp->f_type = DTYPE_SOCKET;
281 (void)svr4_stream_get(fp);
287 svr4_ptm_alloc(struct thread *td)
290 * XXX this is very, very ugly. But I can't find a better
291 * way that won't duplicate a big amount of code from
292 * sys_open(). Ho hum...
294 * Fortunately for us, Solaris (at least 2.5.1) makes the
295 * /dev/ptmx open automatically just open a pty, that (after
296 * STREAMS I_PUSHes), is just a plain pty. fstat() is used
297 * to get the minor device number to map to a tty.
299 * Cycle through the names. If sys_open() returns ENOENT (or
300 * ENXIO), short circuit the cycle and exit.
302 static char ptyname[] = "/dev/ptyXX";
303 static char ttyletters[] = "pqrstuwxyzPQRST";
304 static char ttynumbers[] = "0123456789abcdef";
305 caddr_t sg = stackgap_init();
306 char *path = stackgap_alloc(&sg, sizeof(ptyname));
311 struct proc *p = td->td_proc;
315 SCARG(&oa, path) = path;
316 SCARG(&oa, flags) = O_RDWR;
317 SCARG(&oa, mode) = 0;
320 ptyname[8] = ttyletters[l];
321 ptyname[9] = ttynumbers[n];
323 if ((error = copyout(ptyname, path, sizeof(ptyname))) != 0)
326 switch (error = open(&oa)) {
331 p->p_dupfd = oa.sysmsg_result;
334 if (ttynumbers[++n] == '\0') {
335 if (ttyletters[++l] == '\0')
350 struct svr4_strm *st;
352 if (fp == NULL || fp->f_type != DTYPE_SOCKET)
355 so = (struct socket *) fp->f_data;
358 return so->so_emuldata;
360 /* Allocate a new one. */
361 st = malloc(sizeof(struct svr4_strm), M_TEMP, M_WAITOK);
362 st->s_family = so->so_proto->pr_domain->dom_family;
366 so->so_emuldata = st;
367 fp->f_ops = &svr4_netops;
373 svr4_delete_socket(struct thread *td, struct file *fp)
375 struct svr4_sockcache_entry *e;
376 void *cookie = ((struct socket *) fp->f_data)->so_emuldata;
378 if (!svr4_str_initialized) {
379 TAILQ_INIT(&svr4_head);
380 svr4_str_initialized = 1;
384 for (e = svr4_head.tqh_first; e != NULL; e = e->entries.tqe_next)
385 if (e->td == td && e->cookie == cookie) {
386 TAILQ_REMOVE(&svr4_head, e, entries);
387 DPRINTF(("svr4_delete_socket: %s [%p,%d,%d]\n",
388 e->sock.sun_path, td, (int)e->dev,
396 svr4_soo_close(struct file *fp, struct thread *td)
398 struct socket *so = (struct socket *)fp->f_data;
400 /* CHECKUNIT_DIAG(ENXIO);*/
402 svr4_delete_socket(td, fp);
403 free(so->so_emuldata, M_TEMP);
404 return soo_close(fp, td);