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 <compat/svr4/svr4_types.h>
58#include <compat/svr4/svr4_util.h>
59#include <compat/svr4/svr4_signal.h>
60#include <compat/svr4/svr4_ioctl.h>
61#include <compat/svr4/svr4_stropts.h>
62#include <compat/svr4/svr4_socket.h>
63
64static int svr4_soo_close(struct file *, struct thread *);
65static int svr4_ptm_alloc(struct thread *);
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
98static dev_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 <compat/svr4/svr4_types.h>
58#include <compat/svr4/svr4_util.h>
59#include <compat/svr4/svr4_signal.h>
60#include <compat/svr4/svr4_ioctl.h>
61#include <compat/svr4/svr4_stropts.h>
62#include <compat/svr4/svr4_socket.h>
63
64static int svr4_soo_close(struct file *, struct thread *);
65static int svr4_ptm_alloc(struct thread *);
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
98static dev_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 soo_stat, svr4_soo_close
104};
105
106#define CDEV_MAJOR 103
107static struct cdevsw streams_cdevsw = {
108 /* open */ streamsopen,
109 /* close */ noclose,
110 /* read */ noread,
111 /* write */ nowrite,
112 /* ioctl */ noioctl,
113 /* poll */ nopoll,
114 /* mmap */ nommap,
115 /* strategy */ nostrategy,
116 /* name */ "streams",
117 /* maj */ CDEV_MAJOR,
118 /* dump */ nodump,
119 /* psize */ nopsize,
120 /* flags */ 0,
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 destroy_dev(dt_ptm);
168 destroy_dev(dt_arp);
169 destroy_dev(dt_icmp);
170 destroy_dev(dt_ip);
171 destroy_dev(dt_tcp);
172 destroy_dev(dt_udp);
173 destroy_dev(dt_rawip);
174 destroy_dev(dt_unix_dgram);
175 destroy_dev(dt_unix_stream);
176 destroy_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);
191MODULE_VERSION(streams, 1);
192
193/*
194 * We only need open() and close() routines. open() calls socreate()
195 * to allocate a "real" object behind the stream and mallocs some state
196 * info for use by the svr4 emulator; close() deallocates the state
197 * information and passes the underlying object to the normal socket close
198 * routine.
199 */
200static int
201streamsopen(dev_t dev, int oflags, int devtype, struct thread *td)
202{
203 int type, protocol;
204 int fd;
205 struct file *fp;
206 struct socket *so;
207 int error;
208 int family;
209 struct proc *p = td->td_proc;
210
211 PROC_LOCK(p);
212 if (td->td_dupfd >= 0) {
213 PROC_UNLOCK(p);
214 return ENODEV;
215 }
216 PROC_UNLOCK(p);
217
218 switch (minor(dev)) {
219 case dev_udp:
220 family = AF_INET;
221 type = SOCK_DGRAM;
222 protocol = IPPROTO_UDP;
223 break;
224
225 case dev_tcp:
226 family = AF_INET;
227 type = SOCK_STREAM;
228 protocol = IPPROTO_TCP;
229 break;
230
231 case dev_ip:
232 case dev_rawip:
233 family = AF_INET;
234 type = SOCK_RAW;
235 protocol = IPPROTO_IP;
236 break;
237
238 case dev_icmp:
239 family = AF_INET;
240 type = SOCK_RAW;
241 protocol = IPPROTO_ICMP;
242 break;
243
244 case dev_unix_dgram:
245 family = AF_LOCAL;
246 type = SOCK_DGRAM;
247 protocol = 0;
248 break;
249
250 case dev_unix_stream:
251 case dev_unix_ord_stream:
252 family = AF_LOCAL;
253 type = SOCK_STREAM;
254 protocol = 0;
255 break;
256
257 case dev_ptm:
258 return svr4_ptm_alloc(td);
259
260 default:
261 return EOPNOTSUPP;
262 }
263
264 if ((error = falloc(td, &fp, &fd)) != 0)
265 return error;
266
267 if ((error = socreate(family, &so, type, protocol,
268 td->td_ucred, td)) != 0) {
269 FILEDESC_LOCK(p->p_fd);
270 p->p_fd->fd_ofiles[fd] = 0;
271 FILEDESC_UNLOCK(p->p_fd);
272 ffree(fp);
273 return error;
274 }
275
276 FILEDESC_LOCK(p->p_fd);
277 fp->f_data = (caddr_t)so;
278 fp->f_flag = FREAD|FWRITE;
279 fp->f_ops = &svr4_netops;
280 fp->f_type = DTYPE_SOCKET;
281 FILEDESC_UNLOCK(p->p_fd);
282
283 (void)svr4_stream_get(fp);
284 PROC_LOCK(p);
285 td->td_dupfd = fd;
286 PROC_UNLOCK(p);
287 return ENXIO;
288}
289
290static int
291svr4_ptm_alloc(td)
292 struct thread *td;
293{
294 struct proc *p = td->td_proc;
295 /*
296 * XXX this is very, very ugly. But I can't find a better
297 * way that won't duplicate a big amount of code from
298 * sys_open(). Ho hum...
299 *
300 * Fortunately for us, Solaris (at least 2.5.1) makes the
301 * /dev/ptmx open automatically just open a pty, that (after
302 * STREAMS I_PUSHes), is just a plain pty. fstat() is used
303 * to get the minor device number to map to a tty.
304 *
305 * Cycle through the names. If sys_open() returns ENOENT (or
306 * ENXIO), short circuit the cycle and exit.
307 */
308 static char ptyname[] = "/dev/ptyXX";
309 static char ttyletters[] = "pqrstuwxyzPQRST";
310 static char ttynumbers[] = "0123456789abcdef";
311 caddr_t sg = stackgap_init();
312 char *path = stackgap_alloc(&sg, sizeof(ptyname));
313 struct open_args oa;
314 int l = 0, n = 0;
315 register_t fd = -1;
316 int error;
317
318 oa.path = path;
319 oa.flags = O_RDWR;
320 oa.mode = 0;
321
322 while (fd == -1) {
323 ptyname[8] = ttyletters[l];
324 ptyname[9] = ttynumbers[n];
325
326 if ((error = copyout(ptyname, path, sizeof(ptyname))) != 0)
327 return error;
328
329 switch (error = open(td, &oa)) {
330 case ENOENT:
331 case ENXIO:
332 return error;
333 case 0:
334 PROC_LOCK(p);
335 td->td_dupfd = td->td_retval[0];
336 PROC_UNLOCK(p);
337 return ENXIO;
338 default:
339 if (ttynumbers[++n] == '\0') {
340 if (ttyletters[++l] == '\0')
341 break;
342 n = 0;
343 }
344 }
345 }
346 return ENOENT;
347}
348
349
350struct svr4_strm *
351svr4_stream_get(fp)
352 struct file *fp;
353{
354 struct socket *so;
355 struct svr4_strm *st;
356
357 if (fp == NULL || fp->f_type != DTYPE_SOCKET)
358 return NULL;
359
360 so = (struct socket *) fp->f_data;
361
362 /*
363 * mpfixme: lock socketbuffer here
364 */
365 if (so->so_emuldata) {
366 return so->so_emuldata;
367 }
368
369 /* Allocate a new one. */
370 st = malloc(sizeof(struct svr4_strm), M_TEMP, M_WAITOK);
371 st->s_family = so->so_proto->pr_domain->dom_family;
372 st->s_cmd = ~0;
373 st->s_afd = -1;
374 st->s_eventmask = 0;
375 /*
376 * avoid a race where we loose due to concurrancy issues
377 * of two threads trying to allocate the so_emuldata.
378 */
379 if (so->so_emuldata) {
380 /* lost the race, use the existing emuldata */
381 FREE(st, M_TEMP);
382 st = so->so_emuldata;
383 } else {
384 /* we won, or there was no race, use our copy */
385 so->so_emuldata = st;
386 fp->f_ops = &svr4_netops;
387 }
388
389 return st;
390}
391
392void
393svr4_delete_socket(p, fp)
394 struct proc *p;
395 struct file *fp;
396{
397 struct svr4_sockcache_entry *e;
398 void *cookie = ((struct socket *) fp->f_data)->so_emuldata;
399
400 while (svr4_str_initialized != 2) {
401 if (atomic_cmpset_acq_int(&svr4_str_initialized, 0, 1)) {
402 TAILQ_INIT(&svr4_head);
403 atomic_store_rel_int(&svr4_str_initialized, 2);
404 }
405 return;
406 }
407
408 TAILQ_FOREACH(e, &svr4_head, entries)
409 if (e->p == p && e->cookie == cookie) {
410 TAILQ_REMOVE(&svr4_head, e, entries);
411 DPRINTF(("svr4_delete_socket: %s [%p,%d,%d]\n",
412 e->sock.sun_path, p, (int)e->dev, e->ino));
413 free(e, M_TEMP);
414 return;
415 }
416}
417
418static int
419svr4_soo_close(struct file *fp, struct thread *td)
420{
421 struct socket *so = (struct socket *)fp->f_data;
422
423 /* CHECKUNIT_DIAG(ENXIO);*/
424
425 svr4_delete_socket(td->td_proc, fp);
426 free(so->so_emuldata, M_TEMP);
427 return soo_close(fp, td);
428}
| 103 soo_stat, svr4_soo_close
104};
105
106#define CDEV_MAJOR 103
107static struct cdevsw streams_cdevsw = {
108 /* open */ streamsopen,
109 /* close */ noclose,
110 /* read */ noread,
111 /* write */ nowrite,
112 /* ioctl */ noioctl,
113 /* poll */ nopoll,
114 /* mmap */ nommap,
115 /* strategy */ nostrategy,
116 /* name */ "streams",
117 /* maj */ CDEV_MAJOR,
118 /* dump */ nodump,
119 /* psize */ nopsize,
120 /* flags */ 0,
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 destroy_dev(dt_ptm);
168 destroy_dev(dt_arp);
169 destroy_dev(dt_icmp);
170 destroy_dev(dt_ip);
171 destroy_dev(dt_tcp);
172 destroy_dev(dt_udp);
173 destroy_dev(dt_rawip);
174 destroy_dev(dt_unix_dgram);
175 destroy_dev(dt_unix_stream);
176 destroy_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);
191MODULE_VERSION(streams, 1);
192
193/*
194 * We only need open() and close() routines. open() calls socreate()
195 * to allocate a "real" object behind the stream and mallocs some state
196 * info for use by the svr4 emulator; close() deallocates the state
197 * information and passes the underlying object to the normal socket close
198 * routine.
199 */
200static int
201streamsopen(dev_t dev, int oflags, int devtype, struct thread *td)
202{
203 int type, protocol;
204 int fd;
205 struct file *fp;
206 struct socket *so;
207 int error;
208 int family;
209 struct proc *p = td->td_proc;
210
211 PROC_LOCK(p);
212 if (td->td_dupfd >= 0) {
213 PROC_UNLOCK(p);
214 return ENODEV;
215 }
216 PROC_UNLOCK(p);
217
218 switch (minor(dev)) {
219 case dev_udp:
220 family = AF_INET;
221 type = SOCK_DGRAM;
222 protocol = IPPROTO_UDP;
223 break;
224
225 case dev_tcp:
226 family = AF_INET;
227 type = SOCK_STREAM;
228 protocol = IPPROTO_TCP;
229 break;
230
231 case dev_ip:
232 case dev_rawip:
233 family = AF_INET;
234 type = SOCK_RAW;
235 protocol = IPPROTO_IP;
236 break;
237
238 case dev_icmp:
239 family = AF_INET;
240 type = SOCK_RAW;
241 protocol = IPPROTO_ICMP;
242 break;
243
244 case dev_unix_dgram:
245 family = AF_LOCAL;
246 type = SOCK_DGRAM;
247 protocol = 0;
248 break;
249
250 case dev_unix_stream:
251 case dev_unix_ord_stream:
252 family = AF_LOCAL;
253 type = SOCK_STREAM;
254 protocol = 0;
255 break;
256
257 case dev_ptm:
258 return svr4_ptm_alloc(td);
259
260 default:
261 return EOPNOTSUPP;
262 }
263
264 if ((error = falloc(td, &fp, &fd)) != 0)
265 return error;
266
267 if ((error = socreate(family, &so, type, protocol,
268 td->td_ucred, td)) != 0) {
269 FILEDESC_LOCK(p->p_fd);
270 p->p_fd->fd_ofiles[fd] = 0;
271 FILEDESC_UNLOCK(p->p_fd);
272 ffree(fp);
273 return error;
274 }
275
276 FILEDESC_LOCK(p->p_fd);
277 fp->f_data = (caddr_t)so;
278 fp->f_flag = FREAD|FWRITE;
279 fp->f_ops = &svr4_netops;
280 fp->f_type = DTYPE_SOCKET;
281 FILEDESC_UNLOCK(p->p_fd);
282
283 (void)svr4_stream_get(fp);
284 PROC_LOCK(p);
285 td->td_dupfd = fd;
286 PROC_UNLOCK(p);
287 return ENXIO;
288}
289
290static int
291svr4_ptm_alloc(td)
292 struct thread *td;
293{
294 struct proc *p = td->td_proc;
295 /*
296 * XXX this is very, very ugly. But I can't find a better
297 * way that won't duplicate a big amount of code from
298 * sys_open(). Ho hum...
299 *
300 * Fortunately for us, Solaris (at least 2.5.1) makes the
301 * /dev/ptmx open automatically just open a pty, that (after
302 * STREAMS I_PUSHes), is just a plain pty. fstat() is used
303 * to get the minor device number to map to a tty.
304 *
305 * Cycle through the names. If sys_open() returns ENOENT (or
306 * ENXIO), short circuit the cycle and exit.
307 */
308 static char ptyname[] = "/dev/ptyXX";
309 static char ttyletters[] = "pqrstuwxyzPQRST";
310 static char ttynumbers[] = "0123456789abcdef";
311 caddr_t sg = stackgap_init();
312 char *path = stackgap_alloc(&sg, sizeof(ptyname));
313 struct open_args oa;
314 int l = 0, n = 0;
315 register_t fd = -1;
316 int error;
317
318 oa.path = path;
319 oa.flags = O_RDWR;
320 oa.mode = 0;
321
322 while (fd == -1) {
323 ptyname[8] = ttyletters[l];
324 ptyname[9] = ttynumbers[n];
325
326 if ((error = copyout(ptyname, path, sizeof(ptyname))) != 0)
327 return error;
328
329 switch (error = open(td, &oa)) {
330 case ENOENT:
331 case ENXIO:
332 return error;
333 case 0:
334 PROC_LOCK(p);
335 td->td_dupfd = td->td_retval[0];
336 PROC_UNLOCK(p);
337 return ENXIO;
338 default:
339 if (ttynumbers[++n] == '\0') {
340 if (ttyletters[++l] == '\0')
341 break;
342 n = 0;
343 }
344 }
345 }
346 return ENOENT;
347}
348
349
350struct svr4_strm *
351svr4_stream_get(fp)
352 struct file *fp;
353{
354 struct socket *so;
355 struct svr4_strm *st;
356
357 if (fp == NULL || fp->f_type != DTYPE_SOCKET)
358 return NULL;
359
360 so = (struct socket *) fp->f_data;
361
362 /*
363 * mpfixme: lock socketbuffer here
364 */
365 if (so->so_emuldata) {
366 return so->so_emuldata;
367 }
368
369 /* Allocate a new one. */
370 st = malloc(sizeof(struct svr4_strm), M_TEMP, M_WAITOK);
371 st->s_family = so->so_proto->pr_domain->dom_family;
372 st->s_cmd = ~0;
373 st->s_afd = -1;
374 st->s_eventmask = 0;
375 /*
376 * avoid a race where we loose due to concurrancy issues
377 * of two threads trying to allocate the so_emuldata.
378 */
379 if (so->so_emuldata) {
380 /* lost the race, use the existing emuldata */
381 FREE(st, M_TEMP);
382 st = so->so_emuldata;
383 } else {
384 /* we won, or there was no race, use our copy */
385 so->so_emuldata = st;
386 fp->f_ops = &svr4_netops;
387 }
388
389 return st;
390}
391
392void
393svr4_delete_socket(p, fp)
394 struct proc *p;
395 struct file *fp;
396{
397 struct svr4_sockcache_entry *e;
398 void *cookie = ((struct socket *) fp->f_data)->so_emuldata;
399
400 while (svr4_str_initialized != 2) {
401 if (atomic_cmpset_acq_int(&svr4_str_initialized, 0, 1)) {
402 TAILQ_INIT(&svr4_head);
403 atomic_store_rel_int(&svr4_str_initialized, 2);
404 }
405 return;
406 }
407
408 TAILQ_FOREACH(e, &svr4_head, entries)
409 if (e->p == p && e->cookie == cookie) {
410 TAILQ_REMOVE(&svr4_head, e, entries);
411 DPRINTF(("svr4_delete_socket: %s [%p,%d,%d]\n",
412 e->sock.sun_path, p, (int)e->dev, e->ino));
413 free(e, M_TEMP);
414 return;
415 }
416}
417
418static int
419svr4_soo_close(struct file *fp, struct thread *td)
420{
421 struct socket *so = (struct socket *)fp->f_data;
422
423 /* CHECKUNIT_DIAG(ENXIO);*/
424
425 svr4_delete_socket(td->td_proc, fp);
426 free(so->so_emuldata, M_TEMP);
427 return soo_close(fp, td);
428}
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