1 /* $NetBSD: netbsd32_mqueue.c,v 1.6 2015/12/01 23:56:43 pgoyette Exp $ */
2
3 /*-
4 * Copyright (c) 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software developed for The NetBSD Foundation.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include <sys/cdefs.h>
32 __KERNEL_RCSID(0, "$NetBSD: netbsd32_mqueue.c,v 1.6 2015/12/01 23:56:43 pgoyette Exp $");
33
34 #if defined(_KERNEL_OPT)
35 #include "opt_compat_netbsd.h"
36 #endif
37
38 #include <sys/param.h>
39 #include <sys/dirent.h>
40 #include <sys/filedesc.h>
41 #include <sys/fcntl.h>
42 #include <sys/module.h>
43 #include <sys/syscallvar.h>
44
45 #include <compat/netbsd32/netbsd32.h>
46 #include <compat/netbsd32/netbsd32_syscall.h>
47 #include <compat/netbsd32/netbsd32_syscallargs.h>
48 #include <compat/netbsd32/netbsd32_conv.h>
49
50 extern struct emul emul_netbsd32;
51
52 int
netbsd32_mq_open(struct lwp * l,const struct netbsd32_mq_open_args * uap,register_t * retval)53 netbsd32_mq_open(struct lwp *l, const struct netbsd32_mq_open_args *uap,
54 register_t *retval)
55 {
56 /* {
57 syscallarg(const netbsd32_charp) name;
58 syscallarg(int) oflag;
59 syscallarg(mode_t) mode;
60 syscallarg(struct netbsd32_mq_attrp_t) attr;
61 } */
62 struct netbsd32_mq_attr attr32;
63 struct mq_attr *attr = NULL, a;
64 int error;
65
66 if ((SCARG(uap, oflag) & O_CREAT) && SCARG_P32(uap, attr) != NULL) {
67 error = copyin(SCARG_P32(uap, attr), &attr32, sizeof(attr32));
68 if (error)
69 return error;
70 netbsd32_to_mq_attr(&attr32, &a);
71 attr = &a;
72 }
73
74 return mq_handle_open(l, SCARG_P32(uap, name), SCARG(uap, oflag),
75 SCARG(uap, mode), attr, retval);
76 }
77
78 int
netbsd32_mq_close(struct lwp * l,const struct netbsd32_mq_close_args * uap,register_t * retval)79 netbsd32_mq_close(struct lwp *l, const struct netbsd32_mq_close_args *uap,
80 register_t *retval)
81 {
82 /* {
83 syscallarg(mqd_t) mqdes;
84 } */
85
86 return netbsd32_close(l, (const void*)uap, retval);
87 }
88
89 int
netbsd32_mq_unlink(struct lwp * l,const struct netbsd32_mq_unlink_args * uap,register_t * retval)90 netbsd32_mq_unlink(struct lwp *l, const struct netbsd32_mq_unlink_args *uap,
91 register_t *retval)
92 {
93 /* {
94 syscallarg(const netbsd32_charp) name;
95 } */
96 struct sys_mq_unlink_args ua;
97
98 NETBSD32TOP_UAP(name, const char);
99 return sys_mq_unlink(l, &ua, retval);
100 }
101
102 int
netbsd32_mq_getattr(struct lwp * l,const struct netbsd32_mq_getattr_args * uap,register_t * retval)103 netbsd32_mq_getattr(struct lwp *l, const struct netbsd32_mq_getattr_args *uap,
104 register_t *retval)
105 {
106 /* {
107 syscallarg(mqd_t) mqdes;
108 syscallarg(netbsd32_mq_attrp_t) mqstat;
109 } */
110 struct mqueue *mq;
111 struct mq_attr attr;
112 struct netbsd32_mq_attr a32;
113 int error;
114
115 error = mqueue_get(SCARG(uap, mqdes), 0, &mq);
116 if (error)
117 return error;
118
119 memcpy(&attr, &mq->mq_attrib, sizeof(struct mq_attr));
120 mutex_exit(&mq->mq_mtx);
121 fd_putfile((int)SCARG(uap, mqdes));
122 netbsd32_from_mq_attr(&attr, &a32);
123 return copyout(&a32, SCARG_P32(uap,mqstat), sizeof(a32));
124 }
125
126 int
netbsd32_mq_setattr(struct lwp * l,const struct netbsd32_mq_setattr_args * uap,register_t * retval)127 netbsd32_mq_setattr(struct lwp *l, const struct netbsd32_mq_setattr_args *uap,
128 register_t *retval)
129 {
130 /* {
131 syscallarg(mqd_t) mqdes;
132 syscallarg(const netbsd32_mq_attrp_t) mqstat;
133 syscallarg(netbsd32_mq_attrp_t) omqstat;
134 } */
135 struct mqueue *mq;
136 struct netbsd32_mq_attr attr32;
137 struct mq_attr attr;
138 int error, nonblock;
139
140 error = copyin(SCARG_P32(uap, mqstat), &attr32, sizeof(attr32));
141 if (error)
142 return error;
143 netbsd32_to_mq_attr(&attr32, &attr);
144 nonblock = (attr.mq_flags & O_NONBLOCK);
145
146 error = mqueue_get(SCARG(uap, mqdes), 0, &mq);
147 if (error)
148 return error;
149
150 /* Copy the old attributes, if needed */
151 if (SCARG_P32(uap, omqstat))
152 memcpy(&attr, &mq->mq_attrib, sizeof(struct mq_attr));
153
154 /* Ignore everything, except O_NONBLOCK */
155 if (nonblock)
156 mq->mq_attrib.mq_flags |= O_NONBLOCK;
157 else
158 mq->mq_attrib.mq_flags &= ~O_NONBLOCK;
159
160 mutex_exit(&mq->mq_mtx);
161 fd_putfile((int)SCARG(uap, mqdes));
162
163 /*
164 * Copy the data to the user-space.
165 * Note: According to POSIX, the new attributes should not be set in
166 * case of fail - this would be violated.
167 */
168 if (SCARG_P32(uap, omqstat)) {
169 netbsd32_from_mq_attr(&attr, &attr32);
170 error = copyout(&attr32, SCARG_P32(uap, omqstat),
171 sizeof(attr32));
172 }
173
174 return error;
175 }
176
177 int
netbsd32_mq_notify(struct lwp * l,const struct netbsd32_mq_notify_args * uap,register_t * result)178 netbsd32_mq_notify(struct lwp *l, const struct netbsd32_mq_notify_args *uap,
179 register_t *result)
180 {
181 /* {
182 syscallarg(mqd_t) mqdes;
183 syscallarg(const netbsd32_sigeventp_t) notification;
184 } */
185 struct mqueue *mq;
186 struct netbsd32_sigevent sig32;
187 int error;
188
189 if (SCARG_P32(uap, notification)) {
190 /* Get the signal from user-space */
191 error = copyin(SCARG_P32(uap, notification), &sig32,
192 sizeof(sig32));
193 if (error)
194 return error;
195 if (sig32.sigev_notify == SIGEV_SIGNAL &&
196 (sig32.sigev_signo <=0 || sig32.sigev_signo >= NSIG))
197 return EINVAL;
198 }
199
200 error = mqueue_get(SCARG(uap, mqdes), 0, &mq);
201 if (error) {
202 return error;
203 }
204 if (SCARG_P32(uap, notification)) {
205 /* Register notification: set the signal and target process */
206 if (mq->mq_notify_proc == NULL) {
207 netbsd32_to_sigevent(&sig32, &mq->mq_sig_notify);
208 mq->mq_notify_proc = l->l_proc;
209 } else {
210 /* Fail if someone else already registered */
211 error = EBUSY;
212 }
213 } else {
214 /* Unregister the notification */
215 mq->mq_notify_proc = NULL;
216 }
217 mutex_exit(&mq->mq_mtx);
218 fd_putfile((int)SCARG(uap, mqdes));
219
220 return error;
221 }
222
223 int
netbsd32_mq_send(struct lwp * l,const struct netbsd32_mq_send_args * uap,register_t * result)224 netbsd32_mq_send(struct lwp *l, const struct netbsd32_mq_send_args *uap,
225 register_t *result)
226 {
227 /* {
228 syscallarg(mqd_t) mqdes;
229 syscallarg(const netbsd32_charp) msg_ptr;
230 syscallarg(netbsd32_size_t) msg_len;
231 syscallarg(unsigned) msg_prio;
232 } */
233
234
235 return mq_send1(SCARG(uap, mqdes), SCARG_P32(uap, msg_ptr),
236 SCARG(uap, msg_len), SCARG(uap, msg_prio), NULL);
237 }
238
239 int
netbsd32_mq_receive(struct lwp * l,const struct netbsd32_mq_receive_args * uap,register_t * retval)240 netbsd32_mq_receive(struct lwp *l, const struct netbsd32_mq_receive_args *uap,
241 register_t *retval)
242 {
243 /* {
244 syscallarg(mqd_t) mqdes;
245 syscallarg(netbsd32_charp) msg_ptr;
246 syscallarg(netbsd32_size_t) msg_len;
247 syscallarg(netbsd32_uintp) msg_prio;
248 } */
249 ssize_t mlen;
250 int error;
251
252 error = mq_recv1(SCARG(uap, mqdes), SCARG_P32(uap, msg_ptr),
253 SCARG(uap, msg_len), SCARG_P32(uap, msg_prio), NULL, &mlen);
254 if (error == 0)
255 *retval = mlen;
256
257 return error;
258 }
259
260 int
netbsd32___mq_timedsend50(struct lwp * l,const struct netbsd32___mq_timedsend50_args * uap,register_t * retval)261 netbsd32___mq_timedsend50(struct lwp *l,
262 const struct netbsd32___mq_timedsend50_args *uap, register_t *retval)
263 {
264 /* {
265 syscallarg(mqd_t) mqdes;
266 syscallarg(const netbsd32_charp) msg_ptr;
267 syscallarg(netbsd32_size_t) msg_len;
268 syscallarg(unsigned) msg_prio;
269 syscallarg(const netbsd32_timespecp_t) abs_timeout;
270 } */
271 struct timespec ts, *tsp;
272 struct netbsd32_timespec ts32;
273 int error;
274
275 /* Get and convert time value */
276 if (SCARG_P32(uap, abs_timeout)) {
277 error = copyin(SCARG_P32(uap, abs_timeout), &ts32,
278 sizeof(ts32));
279 if (error)
280 return error;
281 netbsd32_to_timespec(&ts32, &ts);
282 tsp = &ts;
283 } else {
284 tsp = NULL;
285 }
286
287 return mq_send1(SCARG(uap, mqdes), SCARG_P32(uap, msg_ptr),
288 SCARG(uap, msg_len), SCARG(uap, msg_prio), tsp);
289 }
290
291 int
netbsd32___mq_timedreceive50(struct lwp * l,const struct netbsd32___mq_timedreceive50_args * uap,register_t * retval)292 netbsd32___mq_timedreceive50(struct lwp *l,
293 const struct netbsd32___mq_timedreceive50_args *uap, register_t *retval)
294 {
295 /* {
296 syscallarg(mqd_t) mqdes;
297 syscallarg(netbsd32_charp) msg_ptr;
298 syscallarg(netbsd32_size_t) msg_len;
299 syscallarg(netbsd32_uintp) msg_prio;
300 syscallarg(const netbsd32_timespecp_t) abs_timeout;
301 } */
302 struct timespec ts, *tsp;
303 struct netbsd32_timespec ts32;
304 ssize_t mlen;
305 int error;
306
307 /* Get and convert time value */
308 if (SCARG_P32(uap, abs_timeout)) {
309 error = copyin(SCARG_P32(uap, abs_timeout), &ts32,
310 sizeof(ts32));
311 if (error)
312 return error;
313 netbsd32_to_timespec(&ts32, &ts);
314 tsp = &ts;
315 } else {
316 tsp = NULL;
317 }
318
319 error = mq_recv1(SCARG(uap, mqdes), SCARG_P32(uap, msg_ptr),
320 SCARG(uap, msg_len), SCARG_P32(uap, msg_prio), tsp, &mlen);
321 if (error == 0)
322 *retval = mlen;
323
324 return error;
325 }
326
327 #ifdef COMPAT_50
328
329 int
compat_50_netbsd32_mq_timedsend(struct lwp * l,const struct compat_50_netbsd32_mq_timedsend_args * uap,register_t * retval)330 compat_50_netbsd32_mq_timedsend(struct lwp *l,
331 const struct compat_50_netbsd32_mq_timedsend_args *uap,
332 register_t *retval)
333 {
334 /* {
335 syscallarg(mqd_t) mqdes;
336 syscallarg(const netbsd32_charp) msg_ptr;
337 syscallarg(netbsd32_size_t) msg_len;
338 syscallarg(unsigned) msg_prio;
339 syscallarg(const netbsd32_timespec50p_t) abs_timeout;
340 } */
341 struct timespec ts, *tsp;
342 struct netbsd32_timespec50 ts32;
343 int error;
344
345 /* Get and convert time value */
346 if (SCARG_P32(uap, abs_timeout)) {
347 error = copyin(SCARG_P32(uap, abs_timeout), &ts32,
348 sizeof(ts32));
349 if (error)
350 return error;
351 netbsd32_to_timespec50(&ts32, &ts);
352 tsp = &ts;
353 } else {
354 tsp = NULL;
355 }
356
357 return mq_send1(SCARG(uap, mqdes), SCARG_P32(uap, msg_ptr),
358 SCARG(uap, msg_len), SCARG(uap, msg_prio), tsp);
359 }
360
361 int
compat_50_netbsd32_mq_timedreceive(struct lwp * l,const struct compat_50_netbsd32_mq_timedreceive_args * uap,register_t * retval)362 compat_50_netbsd32_mq_timedreceive(struct lwp *l,
363 const struct compat_50_netbsd32_mq_timedreceive_args *uap,
364 register_t *retval)
365 {
366 /* {
367 syscallarg(mqd_t) mqdes;
368 syscallarg(netbsd32_charp) msg_ptr;
369 syscallarg(netbsd32_size_t) msg_len;
370 syscallarg(netbsd32_uintp) msg_prio;
371 syscallarg(const netbsd32_timespec50p_t) abs_timeout;
372 } */
373 struct timespec ts, *tsp;
374 struct netbsd32_timespec50 ts32;
375 ssize_t mlen;
376 int error;
377
378 /* Get and convert time value */
379 if (SCARG_P32(uap, abs_timeout)) {
380 error = copyin(SCARG_P32(uap, abs_timeout), &ts32,
381 sizeof(ts32));
382 if (error)
383 return error;
384 netbsd32_to_timespec50(&ts32, &ts);
385 tsp = &ts;
386 } else {
387 tsp = NULL;
388 }
389
390 error = mq_recv1(SCARG(uap, mqdes), SCARG_P32(uap, msg_ptr),
391 SCARG(uap, msg_len), SCARG_P32(uap, msg_prio), tsp, &mlen);
392 if (error == 0)
393 *retval = mlen;
394
395 return error;
396 }
397
398 #endif /* COMPAT_50 */
399
400 #define _PKG_ENTRY(name) \
401 { NETBSD32_SYS_ ## name, 0, (sy_call_t *)name }
402
403 static const struct syscall_package compat_mqueue_syscalls[] = {
404 _PKG_ENTRY(netbsd32_mq_open),
405 _PKG_ENTRY(netbsd32_mq_close),
406 _PKG_ENTRY(netbsd32_mq_unlink),
407 _PKG_ENTRY(netbsd32_mq_getattr),
408 _PKG_ENTRY(netbsd32_mq_setattr),
409 _PKG_ENTRY(netbsd32_mq_notify),
410 _PKG_ENTRY(netbsd32_mq_send),
411 _PKG_ENTRY(netbsd32_mq_receive),
412 _PKG_ENTRY(netbsd32___mq_timedsend50),
413 _PKG_ENTRY(netbsd32___mq_timedreceive50),
414 #ifdef COMPAT_50
415 _PKG_ENTRY(compat_50_netbsd32_mq_timedsend),
416 _PKG_ENTRY(compat_50_netbsd32_mq_timedreceive),
417 #endif
418 {0, 0, NULL}
419 };
420
421 MODULE(MODULE_CLASS_EXEC, compat_netbsd32_mqueue, "mqueue,compat_netbsd32");
422
423 static int
compat_netbsd32_mqueue_modcmd(modcmd_t cmd,void * arg)424 compat_netbsd32_mqueue_modcmd(modcmd_t cmd, void *arg)
425 {
426 int error;
427
428 switch (cmd) {
429 case MODULE_CMD_INIT:
430 error = syscall_establish(&emul_netbsd32,
431 compat_mqueue_syscalls);
432 break;
433 case MODULE_CMD_FINI:
434 error = syscall_disestablish(&emul_netbsd32,
435 compat_mqueue_syscalls);
436 break;
437 default:
438 error = ENOTTY;
439 break;
440 }
441 return error;
442 }
443