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 1.3 2003/06/23 17:55:35 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 <svr4/svr4_types.h>
59 #include <svr4/svr4_util.h>
60 #include <svr4/svr4_signal.h>
61 #include <svr4/svr4_ioctl.h>
62 #include <svr4/svr4_stropts.h>
63 #include <svr4/svr4_socket.h>
65 static int svr4_soo_close __P((struct file *, struct proc *));
66 static int svr4_ptm_alloc __P((struct proc *));
67 static d_open_t streamsopen;
69 struct svr4_sockcache_entry {
70 struct proc *p; /* Process 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 = {
103 soo_read, soo_write, soo_ioctl, soo_poll, sokqfilter,
104 soo_stat, svr4_soo_close
107 #define CDEV_MAJOR 103
108 static struct cdevsw streams_cdevsw = {
109 /* open */ streamsopen,
116 /* strategy */ nostrategy,
117 /* name */ "streams",
118 /* maj */ CDEV_MAJOR,
125 struct streams_softc {
126 struct isa_device *dev;
129 #define UNIT(dev) minor(dev) /* assume one minor number per unit */
131 typedef struct streams_softc *sc_p;
134 streams_modevent(module_t mod, int type, void *unused)
138 /* XXX should make sure it isn't already loaded first */
139 dt_ptm = make_dev(&streams_cdevsw, dev_ptm, 0, 0, 0666,
141 dt_arp = make_dev(&streams_cdevsw, dev_arp, 0, 0, 0666,
143 dt_icmp = make_dev(&streams_cdevsw, dev_icmp, 0, 0, 0666,
145 dt_ip = make_dev(&streams_cdevsw, dev_ip, 0, 0, 0666,
147 dt_tcp = make_dev(&streams_cdevsw, dev_tcp, 0, 0, 0666,
149 dt_udp = make_dev(&streams_cdevsw, dev_udp, 0, 0, 0666,
151 dt_rawip = make_dev(&streams_cdevsw, dev_rawip, 0, 0, 0666,
153 dt_unix_dgram = make_dev(&streams_cdevsw, dev_unix_dgram,
154 0, 0, 0666, "ticlts");
155 dt_unix_stream = make_dev(&streams_cdevsw, dev_unix_stream,
156 0, 0, 0666, "ticots");
157 dt_unix_ord_stream = make_dev(&streams_cdevsw,
158 dev_unix_ord_stream, 0, 0, 0666, "ticotsord");
160 if (! (dt_ptm && dt_arp && dt_icmp && dt_ip && dt_tcp &&
161 dt_udp && dt_rawip && dt_unix_dgram &&
162 dt_unix_stream && dt_unix_ord_stream)) {
163 printf("WARNING: device config for STREAMS failed\n");
164 printf("Suggest unloading streams KLD\n");
168 /* XXX should check to see if it's busy first */
171 destroy_dev(dt_icmp);
175 destroy_dev(dt_rawip);
176 destroy_dev(dt_unix_dgram);
177 destroy_dev(dt_unix_stream);
178 destroy_dev(dt_unix_ord_stream);
187 static moduledata_t streams_mod = {
192 DECLARE_MODULE(streams, streams_mod, SI_SUB_DRIVERS, SI_ORDER_ANY);
195 * We only need open() and close() routines. open() calls socreate()
196 * to allocate a "real" object behind the stream and mallocs some state
197 * info for use by the svr4 emulator; close() deallocates the state
198 * information and passes the underlying object to the normal socket close
202 streamsopen(dev_t dev, int oflags, int devtype, d_thread_t *td)
204 struct proc *p = td->td_proc;
217 switch (minor(dev)) {
221 protocol = IPPROTO_UDP;
227 protocol = IPPROTO_TCP;
234 protocol = IPPROTO_IP;
240 protocol = IPPROTO_ICMP;
249 case dev_unix_stream:
250 case dev_unix_ord_stream:
257 return svr4_ptm_alloc(p);
263 if ((error = falloc(p, &fp, &fd)) != 0)
266 if ((error = socreate(family, &so, type, protocol, p)) != 0) {
267 p->p_fd->fd_ofiles[fd] = 0;
272 fp->f_data = (caddr_t)so;
273 fp->f_flag = FREAD|FWRITE;
274 fp->f_ops = &svr4_netops;
275 fp->f_type = DTYPE_SOCKET;
277 (void)svr4_stream_get(fp);
287 * XXX this is very, very ugly. But I can't find a better
288 * way that won't duplicate a big amount of code from
289 * sys_open(). Ho hum...
291 * Fortunately for us, Solaris (at least 2.5.1) makes the
292 * /dev/ptmx open automatically just open a pty, that (after
293 * STREAMS I_PUSHes), is just a plain pty. fstat() is used
294 * to get the minor device number to map to a tty.
296 * Cycle through the names. If sys_open() returns ENOENT (or
297 * ENXIO), short circuit the cycle and exit.
299 static char ptyname[] = "/dev/ptyXX";
300 static char ttyletters[] = "pqrstuwxyzPQRST";
301 static char ttynumbers[] = "0123456789abcdef";
302 caddr_t sg = stackgap_init();
303 char *path = stackgap_alloc(&sg, sizeof(ptyname));
309 SCARG(&oa, path) = path;
310 SCARG(&oa, flags) = O_RDWR;
311 SCARG(&oa, mode) = 0;
314 ptyname[8] = ttyletters[l];
315 ptyname[9] = ttynumbers[n];
317 if ((error = copyout(ptyname, path, sizeof(ptyname))) != 0)
320 switch (error = open(&oa)) {
325 p->p_dupfd = p->p_retval[0];
328 if (ttynumbers[++n] == '\0') {
329 if (ttyletters[++l] == '\0')
344 struct svr4_strm *st;
346 if (fp == NULL || fp->f_type != DTYPE_SOCKET)
349 so = (struct socket *) fp->f_data;
352 return so->so_emuldata;
354 /* Allocate a new one. */
355 st = malloc(sizeof(struct svr4_strm), M_TEMP, M_WAITOK);
356 st->s_family = so->so_proto->pr_domain->dom_family;
360 so->so_emuldata = st;
361 fp->f_ops = &svr4_netops;
367 svr4_delete_socket(p, fp)
371 struct svr4_sockcache_entry *e;
372 void *cookie = ((struct socket *) fp->f_data)->so_emuldata;
374 if (!svr4_str_initialized) {
375 TAILQ_INIT(&svr4_head);
376 svr4_str_initialized = 1;
380 for (e = svr4_head.tqh_first; e != NULL; e = e->entries.tqe_next)
381 if (e->p == p && e->cookie == cookie) {
382 TAILQ_REMOVE(&svr4_head, e, entries);
383 DPRINTF(("svr4_delete_socket: %s [%p,%d,%d]\n",
384 e->sock.sun_path, p, e->dev, e->ino));
391 svr4_soo_close(struct file *fp, struct proc *p)
393 struct socket *so = (struct socket *)fp->f_data;
395 /* CHECKUNIT_DIAG(ENXIO);*/
397 svr4_delete_socket(p, fp);
398 free(so->so_emuldata, M_TEMP);
399 return soo_close(fp, p);