1/*
2 * Copyright (c) 1998 Mark Newton
3 * Copyright (c) 1994 Christos Zoulas
4 * Copyright (c) 1997 Todd Vierling
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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
17 *
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.
28 *
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 :-).
32 *
| 1/*
2 * Copyright (c) 1998 Mark Newton
3 * Copyright (c) 1994 Christos Zoulas
4 * Copyright (c) 1997 Todd Vierling
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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
17 *
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.
28 *
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 :-).
32 *
|
34 */
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/kernel.h> /* SYSINIT stuff */
39#include <sys/conf.h> /* cdevsw stuff */
40#include <sys/malloc.h> /* malloc region definitions */
41#include <sys/file.h>
42#include <sys/filedesc.h>
43#include <sys/unistd.h>
44#include <sys/fcntl.h>
45#include <sys/socket.h>
46#include <sys/protosw.h>
47#include <sys/socketvar.h>
48#include <sys/un.h>
49#include <sys/domain.h>
50#include <net/if.h>
51#include <netinet/in.h>
52#include <sys/proc.h>
53#include <sys/uio.h>
54
55#include <sys/sysproto.h>
56
57#include <svr4/svr4_types.h>
58#include <svr4/svr4_util.h>
59#include <svr4/svr4_signal.h>
60#include <svr4/svr4_ioctl.h>
61#include <svr4/svr4_stropts.h>
62#include <svr4/svr4_socket.h>
63
64static int svr4_soo_close __P((struct file *, struct proc *));
65static int svr4_ptm_alloc __P((struct proc *));
66static d_open_t streamsopen;
67
68struct svr4_sockcache_entry {
69 struct proc *p; /* Process for the socket */
70 void *cookie; /* Internal cookie used for matching */
71 struct sockaddr_un sock;/* Pathname for the socket */
72 dev_t dev; /* Device where the socket lives on */
73 ino_t ino; /* Inode where the socket lives on */
74 TAILQ_ENTRY(svr4_sockcache_entry) entries;
75};
76
77TAILQ_HEAD(svr4_sockcache_head, svr4_sockcache_entry) svr4_head;
78
79/* Initialization flag (set/queried by svr4_mod LKM) */
80int svr4_str_initialized = 0;
81
82/*
83 * Device minor numbers
84 */
85enum {
86 dev_ptm = 10,
87 dev_arp = 26,
88 dev_icmp = 27,
89 dev_ip = 28,
90 dev_tcp = 35,
91 dev_udp = 36,
92 dev_rawip = 37,
93 dev_unix_dgram = 38,
94 dev_unix_stream = 39,
95 dev_unix_ord_stream = 40
96};
97
98dev_t dt_ptm, dt_arp, dt_icmp, dt_ip, dt_tcp, dt_udp, dt_rawip,
99 dt_unix_dgram, dt_unix_stream, dt_unix_ord_stream;
100
101static struct fileops svr4_netops = {
| 34 */
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/kernel.h> /* SYSINIT stuff */
39#include <sys/conf.h> /* cdevsw stuff */
40#include <sys/malloc.h> /* malloc region definitions */
41#include <sys/file.h>
42#include <sys/filedesc.h>
43#include <sys/unistd.h>
44#include <sys/fcntl.h>
45#include <sys/socket.h>
46#include <sys/protosw.h>
47#include <sys/socketvar.h>
48#include <sys/un.h>
49#include <sys/domain.h>
50#include <net/if.h>
51#include <netinet/in.h>
52#include <sys/proc.h>
53#include <sys/uio.h>
54
55#include <sys/sysproto.h>
56
57#include <svr4/svr4_types.h>
58#include <svr4/svr4_util.h>
59#include <svr4/svr4_signal.h>
60#include <svr4/svr4_ioctl.h>
61#include <svr4/svr4_stropts.h>
62#include <svr4/svr4_socket.h>
63
64static int svr4_soo_close __P((struct file *, struct proc *));
65static int svr4_ptm_alloc __P((struct proc *));
66static d_open_t streamsopen;
67
68struct svr4_sockcache_entry {
69 struct proc *p; /* Process for the socket */
70 void *cookie; /* Internal cookie used for matching */
71 struct sockaddr_un sock;/* Pathname for the socket */
72 dev_t dev; /* Device where the socket lives on */
73 ino_t ino; /* Inode where the socket lives on */
74 TAILQ_ENTRY(svr4_sockcache_entry) entries;
75};
76
77TAILQ_HEAD(svr4_sockcache_head, svr4_sockcache_entry) svr4_head;
78
79/* Initialization flag (set/queried by svr4_mod LKM) */
80int svr4_str_initialized = 0;
81
82/*
83 * Device minor numbers
84 */
85enum {
86 dev_ptm = 10,
87 dev_arp = 26,
88 dev_icmp = 27,
89 dev_ip = 28,
90 dev_tcp = 35,
91 dev_udp = 36,
92 dev_rawip = 37,
93 dev_unix_dgram = 38,
94 dev_unix_stream = 39,
95 dev_unix_ord_stream = 40
96};
97
98dev_t dt_ptm, dt_arp, dt_icmp, dt_ip, dt_tcp, dt_udp, dt_rawip,
99 dt_unix_dgram, dt_unix_stream, dt_unix_ord_stream;
100
101static struct fileops svr4_netops = {
|
103};
104
105#define CDEV_MAJOR 103
106static struct cdevsw streams_cdevsw = {
107 /* open */ streamsopen,
108 /* close */ noclose,
109 /* read */ noread,
110 /* write */ nowrite,
111 /* ioctl */ noioctl,
112 /* poll */ nopoll,
113 /* mmap */ nommap,
114 /* strategy */ nostrategy,
115 /* name */ "streams",
116 /* maj */ CDEV_MAJOR,
117 /* dump */ nodump,
118 /* psize */ nopsize,
119 /* flags */ 0,
120 /* bmaj */ -1
121};
122
123struct streams_softc {
124 struct isa_device *dev;
125} ;
126
127#define UNIT(dev) minor(dev) /* assume one minor number per unit */
128
129typedef struct streams_softc *sc_p;
130
131static int
132streams_modevent(module_t mod, int type, void *unused)
133{
134 switch (type) {
135 case MOD_LOAD:
136 /* XXX should make sure it isn't already loaded first */
137 dt_ptm = make_dev(&streams_cdevsw, dev_ptm, 0, 0, 0666,
138 "ptm");
139 dt_arp = make_dev(&streams_cdevsw, dev_arp, 0, 0, 0666,
140 "arp");
141 dt_icmp = make_dev(&streams_cdevsw, dev_icmp, 0, 0, 0666,
142 "icmp");
143 dt_ip = make_dev(&streams_cdevsw, dev_ip, 0, 0, 0666,
144 "ip");
145 dt_tcp = make_dev(&streams_cdevsw, dev_tcp, 0, 0, 0666,
146 "tcp");
147 dt_udp = make_dev(&streams_cdevsw, dev_udp, 0, 0, 0666,
148 "udp");
149 dt_rawip = make_dev(&streams_cdevsw, dev_rawip, 0, 0, 0666,
150 "rawip");
151 dt_unix_dgram = make_dev(&streams_cdevsw, dev_unix_dgram,
152 0, 0, 0666, "ticlts");
153 dt_unix_stream = make_dev(&streams_cdevsw, dev_unix_stream,
154 0, 0, 0666, "ticots");
155 dt_unix_ord_stream = make_dev(&streams_cdevsw,
156 dev_unix_ord_stream, 0, 0, 0666, "ticotsord");
157
158 if (! (dt_ptm && dt_arp && dt_icmp && dt_ip && dt_tcp &&
159 dt_udp && dt_rawip && dt_unix_dgram &&
160 dt_unix_stream && dt_unix_ord_stream)) {
161 printf("WARNING: device config for STREAMS failed\n");
162 printf("Suggest unloading streams KLD\n");
163 }
164 return 0;
165 case MOD_UNLOAD:
166 /* XXX should check to see if it's busy first */
167 remove_dev(dt_ptm);
168 remove_dev(dt_arp);
169 remove_dev(dt_icmp);
170 remove_dev(dt_ip);
171 remove_dev(dt_tcp);
172 remove_dev(dt_udp);
173 remove_dev(dt_rawip);
174 remove_dev(dt_unix_dgram);
175 remove_dev(dt_unix_stream);
176 remove_dev(dt_unix_ord_stream);
177
178 return 0;
179 default:
180 break;
181 }
182 return 0;
183}
184
185static moduledata_t streams_mod = {
186 "streams",
187 streams_modevent,
188 0
189};
190DECLARE_MODULE(streams, streams_mod, SI_SUB_DRIVERS, SI_ORDER_ANY);
191
192/*
193 * We only need open() and close() routines. open() calls socreate()
194 * to allocate a "real" object behind the stream and mallocs some state
195 * info for use by the svr4 emulator; close() deallocates the state
196 * information and passes the underlying object to the normal socket close
197 * routine.
198 */
199static int
200streamsopen(dev_t dev, int oflags, int devtype, struct proc *p)
201{
202 int type, protocol;
203 int fd;
204 struct file *fp;
205 struct socket *so;
206 int error;
207 int family;
208
209 if (p->p_dupfd >= 0)
210 return ENODEV;
211
212 switch (minor(dev)) {
213 case dev_udp:
214 family = AF_INET;
215 type = SOCK_DGRAM;
216 protocol = IPPROTO_UDP;
217 break;
218
219 case dev_tcp:
220 family = AF_INET;
221 type = SOCK_STREAM;
222 protocol = IPPROTO_TCP;
223 break;
224
225 case dev_ip:
226 case dev_rawip:
227 family = AF_INET;
228 type = SOCK_RAW;
229 protocol = IPPROTO_IP;
230 break;
231
232 case dev_icmp:
233 family = AF_INET;
234 type = SOCK_RAW;
235 protocol = IPPROTO_ICMP;
236 break;
237
238 case dev_unix_dgram:
239 family = AF_LOCAL;
240 type = SOCK_DGRAM;
241 protocol = 0;
242 break;
243
244 case dev_unix_stream:
245 case dev_unix_ord_stream:
246 family = AF_LOCAL;
247 type = SOCK_STREAM;
248 protocol = 0;
249 break;
250
251 case dev_ptm:
252 return svr4_ptm_alloc(p);
253
254 default:
255 return EOPNOTSUPP;
256 }
257
258 if ((error = falloc(p, &fp, &fd)) != 0)
259 return error;
260
261 if ((error = socreate(family, &so, type, protocol, p)) != 0) {
262 p->p_fd->fd_ofiles[fd] = 0;
263 ffree(fp);
264 return error;
265 }
266
267 fp->f_data = (caddr_t)so;
268 fp->f_flag = FREAD|FWRITE;
269 fp->f_ops = &svr4_netops;
270 fp->f_type = DTYPE_SOCKET;
271
272 (void)svr4_stream_get(fp);
273 p->p_dupfd = fd;
274 return ENXIO;
275}
276
277static int
278svr4_ptm_alloc(p)
279 struct proc *p;
280{
281 /*
282 * XXX this is very, very ugly. But I can't find a better
283 * way that won't duplicate a big amount of code from
284 * sys_open(). Ho hum...
285 *
286 * Fortunately for us, Solaris (at least 2.5.1) makes the
287 * /dev/ptmx open automatically just open a pty, that (after
288 * STREAMS I_PUSHes), is just a plain pty. fstat() is used
289 * to get the minor device number to map to a tty.
290 *
291 * Cycle through the names. If sys_open() returns ENOENT (or
292 * ENXIO), short circuit the cycle and exit.
293 */
294 static char ptyname[] = "/dev/ptyXX";
295 static char ttyletters[] = "pqrstuwxyzPQRST";
296 static char ttynumbers[] = "0123456789abcdef";
297 caddr_t sg = stackgap_init();
298 char *path = stackgap_alloc(&sg, sizeof(ptyname));
299 struct open_args oa;
300 int l = 0, n = 0;
301 register_t fd = -1;
302 int error;
303
304 SCARG(&oa, path) = path;
305 SCARG(&oa, flags) = O_RDWR;
306 SCARG(&oa, mode) = 0;
307
308 while (fd == -1) {
309 ptyname[8] = ttyletters[l];
310 ptyname[9] = ttynumbers[n];
311
312 if ((error = copyout(ptyname, path, sizeof(ptyname))) != 0)
313 return error;
314
315 switch (error = open(p, &oa)) {
316 case ENOENT:
317 case ENXIO:
318 return error;
319 case 0:
320 p->p_dupfd = p->p_retval[0];
321 return ENXIO;
322 default:
323 if (ttynumbers[++n] == '\0') {
324 if (ttyletters[++l] == '\0')
325 break;
326 n = 0;
327 }
328 }
329 }
330 return ENOENT;
331}
332
333
334struct svr4_strm *
335svr4_stream_get(fp)
336 struct file *fp;
337{
338 struct socket *so;
339 struct svr4_strm *st;
340
341 if (fp == NULL || fp->f_type != DTYPE_SOCKET)
342 return NULL;
343
344 so = (struct socket *) fp->f_data;
345
346 if (so->so_emuldata)
347 return so->so_emuldata;
348
349 /* Allocate a new one. */
350 st = malloc(sizeof(struct svr4_strm), M_TEMP, M_WAITOK);
351 st->s_family = so->so_proto->pr_domain->dom_family;
352 st->s_cmd = ~0;
353 st->s_afd = -1;
354 st->s_eventmask = 0;
355 so->so_emuldata = st;
356 fp->f_ops = &svr4_netops;
357
358 return st;
359}
360
361void
362svr4_delete_socket(p, fp)
363 struct proc *p;
364 struct file *fp;
365{
366 struct svr4_sockcache_entry *e;
367 void *cookie = ((struct socket *) fp->f_data)->so_emuldata;
368
369 if (!svr4_str_initialized) {
370 TAILQ_INIT(&svr4_head);
371 svr4_str_initialized = 1;
372 return;
373 }
374
375 for (e = svr4_head.tqh_first; e != NULL; e = e->entries.tqe_next)
376 if (e->p == p && e->cookie == cookie) {
377 TAILQ_REMOVE(&svr4_head, e, entries);
378 DPRINTF(("svr4_delete_socket: %s [%p,%d,%d]\n",
379 e->sock.sun_path, p, e->dev, e->ino));
380 free(e, M_TEMP);
381 return;
382 }
383}
384
385static int
386svr4_soo_close(struct file *fp, struct proc *p)
387{
388 struct socket *so = (struct socket *)fp->f_data;
389
390 /* CHECKUNIT_DIAG(ENXIO);*/
391
392 svr4_delete_socket(p, fp);
393 free(so->so_emuldata, M_TEMP);
394 return soo_close(fp, p);
395 return (0);
396}
| 103};
104
105#define CDEV_MAJOR 103
106static struct cdevsw streams_cdevsw = {
107 /* open */ streamsopen,
108 /* close */ noclose,
109 /* read */ noread,
110 /* write */ nowrite,
111 /* ioctl */ noioctl,
112 /* poll */ nopoll,
113 /* mmap */ nommap,
114 /* strategy */ nostrategy,
115 /* name */ "streams",
116 /* maj */ CDEV_MAJOR,
117 /* dump */ nodump,
118 /* psize */ nopsize,
119 /* flags */ 0,
120 /* bmaj */ -1
121};
122
123struct streams_softc {
124 struct isa_device *dev;
125} ;
126
127#define UNIT(dev) minor(dev) /* assume one minor number per unit */
128
129typedef struct streams_softc *sc_p;
130
131static int
132streams_modevent(module_t mod, int type, void *unused)
133{
134 switch (type) {
135 case MOD_LOAD:
136 /* XXX should make sure it isn't already loaded first */
137 dt_ptm = make_dev(&streams_cdevsw, dev_ptm, 0, 0, 0666,
138 "ptm");
139 dt_arp = make_dev(&streams_cdevsw, dev_arp, 0, 0, 0666,
140 "arp");
141 dt_icmp = make_dev(&streams_cdevsw, dev_icmp, 0, 0, 0666,
142 "icmp");
143 dt_ip = make_dev(&streams_cdevsw, dev_ip, 0, 0, 0666,
144 "ip");
145 dt_tcp = make_dev(&streams_cdevsw, dev_tcp, 0, 0, 0666,
146 "tcp");
147 dt_udp = make_dev(&streams_cdevsw, dev_udp, 0, 0, 0666,
148 "udp");
149 dt_rawip = make_dev(&streams_cdevsw, dev_rawip, 0, 0, 0666,
150 "rawip");
151 dt_unix_dgram = make_dev(&streams_cdevsw, dev_unix_dgram,
152 0, 0, 0666, "ticlts");
153 dt_unix_stream = make_dev(&streams_cdevsw, dev_unix_stream,
154 0, 0, 0666, "ticots");
155 dt_unix_ord_stream = make_dev(&streams_cdevsw,
156 dev_unix_ord_stream, 0, 0, 0666, "ticotsord");
157
158 if (! (dt_ptm && dt_arp && dt_icmp && dt_ip && dt_tcp &&
159 dt_udp && dt_rawip && dt_unix_dgram &&
160 dt_unix_stream && dt_unix_ord_stream)) {
161 printf("WARNING: device config for STREAMS failed\n");
162 printf("Suggest unloading streams KLD\n");
163 }
164 return 0;
165 case MOD_UNLOAD:
166 /* XXX should check to see if it's busy first */
167 remove_dev(dt_ptm);
168 remove_dev(dt_arp);
169 remove_dev(dt_icmp);
170 remove_dev(dt_ip);
171 remove_dev(dt_tcp);
172 remove_dev(dt_udp);
173 remove_dev(dt_rawip);
174 remove_dev(dt_unix_dgram);
175 remove_dev(dt_unix_stream);
176 remove_dev(dt_unix_ord_stream);
177
178 return 0;
179 default:
180 break;
181 }
182 return 0;
183}
184
185static moduledata_t streams_mod = {
186 "streams",
187 streams_modevent,
188 0
189};
190DECLARE_MODULE(streams, streams_mod, SI_SUB_DRIVERS, SI_ORDER_ANY);
191
192/*
193 * We only need open() and close() routines. open() calls socreate()
194 * to allocate a "real" object behind the stream and mallocs some state
195 * info for use by the svr4 emulator; close() deallocates the state
196 * information and passes the underlying object to the normal socket close
197 * routine.
198 */
199static int
200streamsopen(dev_t dev, int oflags, int devtype, struct proc *p)
201{
202 int type, protocol;
203 int fd;
204 struct file *fp;
205 struct socket *so;
206 int error;
207 int family;
208
209 if (p->p_dupfd >= 0)
210 return ENODEV;
211
212 switch (minor(dev)) {
213 case dev_udp:
214 family = AF_INET;
215 type = SOCK_DGRAM;
216 protocol = IPPROTO_UDP;
217 break;
218
219 case dev_tcp:
220 family = AF_INET;
221 type = SOCK_STREAM;
222 protocol = IPPROTO_TCP;
223 break;
224
225 case dev_ip:
226 case dev_rawip:
227 family = AF_INET;
228 type = SOCK_RAW;
229 protocol = IPPROTO_IP;
230 break;
231
232 case dev_icmp:
233 family = AF_INET;
234 type = SOCK_RAW;
235 protocol = IPPROTO_ICMP;
236 break;
237
238 case dev_unix_dgram:
239 family = AF_LOCAL;
240 type = SOCK_DGRAM;
241 protocol = 0;
242 break;
243
244 case dev_unix_stream:
245 case dev_unix_ord_stream:
246 family = AF_LOCAL;
247 type = SOCK_STREAM;
248 protocol = 0;
249 break;
250
251 case dev_ptm:
252 return svr4_ptm_alloc(p);
253
254 default:
255 return EOPNOTSUPP;
256 }
257
258 if ((error = falloc(p, &fp, &fd)) != 0)
259 return error;
260
261 if ((error = socreate(family, &so, type, protocol, p)) != 0) {
262 p->p_fd->fd_ofiles[fd] = 0;
263 ffree(fp);
264 return error;
265 }
266
267 fp->f_data = (caddr_t)so;
268 fp->f_flag = FREAD|FWRITE;
269 fp->f_ops = &svr4_netops;
270 fp->f_type = DTYPE_SOCKET;
271
272 (void)svr4_stream_get(fp);
273 p->p_dupfd = fd;
274 return ENXIO;
275}
276
277static int
278svr4_ptm_alloc(p)
279 struct proc *p;
280{
281 /*
282 * XXX this is very, very ugly. But I can't find a better
283 * way that won't duplicate a big amount of code from
284 * sys_open(). Ho hum...
285 *
286 * Fortunately for us, Solaris (at least 2.5.1) makes the
287 * /dev/ptmx open automatically just open a pty, that (after
288 * STREAMS I_PUSHes), is just a plain pty. fstat() is used
289 * to get the minor device number to map to a tty.
290 *
291 * Cycle through the names. If sys_open() returns ENOENT (or
292 * ENXIO), short circuit the cycle and exit.
293 */
294 static char ptyname[] = "/dev/ptyXX";
295 static char ttyletters[] = "pqrstuwxyzPQRST";
296 static char ttynumbers[] = "0123456789abcdef";
297 caddr_t sg = stackgap_init();
298 char *path = stackgap_alloc(&sg, sizeof(ptyname));
299 struct open_args oa;
300 int l = 0, n = 0;
301 register_t fd = -1;
302 int error;
303
304 SCARG(&oa, path) = path;
305 SCARG(&oa, flags) = O_RDWR;
306 SCARG(&oa, mode) = 0;
307
308 while (fd == -1) {
309 ptyname[8] = ttyletters[l];
310 ptyname[9] = ttynumbers[n];
311
312 if ((error = copyout(ptyname, path, sizeof(ptyname))) != 0)
313 return error;
314
315 switch (error = open(p, &oa)) {
316 case ENOENT:
317 case ENXIO:
318 return error;
319 case 0:
320 p->p_dupfd = p->p_retval[0];
321 return ENXIO;
322 default:
323 if (ttynumbers[++n] == '\0') {
324 if (ttyletters[++l] == '\0')
325 break;
326 n = 0;
327 }
328 }
329 }
330 return ENOENT;
331}
332
333
334struct svr4_strm *
335svr4_stream_get(fp)
336 struct file *fp;
337{
338 struct socket *so;
339 struct svr4_strm *st;
340
341 if (fp == NULL || fp->f_type != DTYPE_SOCKET)
342 return NULL;
343
344 so = (struct socket *) fp->f_data;
345
346 if (so->so_emuldata)
347 return so->so_emuldata;
348
349 /* Allocate a new one. */
350 st = malloc(sizeof(struct svr4_strm), M_TEMP, M_WAITOK);
351 st->s_family = so->so_proto->pr_domain->dom_family;
352 st->s_cmd = ~0;
353 st->s_afd = -1;
354 st->s_eventmask = 0;
355 so->so_emuldata = st;
356 fp->f_ops = &svr4_netops;
357
358 return st;
359}
360
361void
362svr4_delete_socket(p, fp)
363 struct proc *p;
364 struct file *fp;
365{
366 struct svr4_sockcache_entry *e;
367 void *cookie = ((struct socket *) fp->f_data)->so_emuldata;
368
369 if (!svr4_str_initialized) {
370 TAILQ_INIT(&svr4_head);
371 svr4_str_initialized = 1;
372 return;
373 }
374
375 for (e = svr4_head.tqh_first; e != NULL; e = e->entries.tqe_next)
376 if (e->p == p && e->cookie == cookie) {
377 TAILQ_REMOVE(&svr4_head, e, entries);
378 DPRINTF(("svr4_delete_socket: %s [%p,%d,%d]\n",
379 e->sock.sun_path, p, e->dev, e->ino));
380 free(e, M_TEMP);
381 return;
382 }
383}
384
385static int
386svr4_soo_close(struct file *fp, struct proc *p)
387{
388 struct socket *so = (struct socket *)fp->f_data;
389
390 /* CHECKUNIT_DIAG(ENXIO);*/
391
392 svr4_delete_socket(p, fp);
393 free(so->so_emuldata, M_TEMP);
394 return soo_close(fp, p);
395 return (0);
396}
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