1 /*-
2 * Copyright (c) 1994-1995 Søren Schmidt
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer
10 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/syscallsubr.h>
35 #include <sys/sysproto.h>
36 #include <sys/proc.h>
37 #include <sys/limits.h>
38 #include <sys/msg.h>
39 #include <sys/sem.h>
40 #include <sys/shm.h>
41
42 #include "opt_compat.h"
43
44 #ifdef COMPAT_LINUX32
45 #include <machine/../linux32/linux.h>
46 #include <machine/../linux32/linux32_proto.h>
47 #include <machine/../linux32/linux32_ipc64.h>
48 #else
49 #include <machine/../linux/linux.h>
50 #include <machine/../linux/linux_proto.h>
51 #include <machine/../linux/linux_ipc64.h>
52 #endif
53 #include <compat/linux/linux_ipc.h>
54 #include <compat/linux/linux_util.h>
55
56 struct l_seminfo {
57 l_int semmap;
58 l_int semmni;
59 l_int semmns;
60 l_int semmnu;
61 l_int semmsl;
62 l_int semopm;
63 l_int semume;
64 l_int semusz;
65 l_int semvmx;
66 l_int semaem;
67 };
68
69 struct l_shminfo {
70 l_int shmmax;
71 l_int shmmin;
72 l_int shmmni;
73 l_int shmseg;
74 l_int shmall;
75 };
76
77 struct l_shm_info {
78 l_int used_ids;
79 l_ulong shm_tot; /* total allocated shm */
80 l_ulong shm_rss; /* total resident shm */
81 l_ulong shm_swp; /* total swapped shm */
82 l_ulong swap_attempts;
83 l_ulong swap_successes;
84 };
85
86 static void
87 bsd_to_linux_shminfo( struct shminfo *bpp, struct l_shminfo *lpp)
88 {
89 lpp->shmmax = bpp->shmmax;
90 lpp->shmmin = bpp->shmmin;
91 lpp->shmmni = bpp->shmmni;
92 lpp->shmseg = bpp->shmseg;
93 lpp->shmall = bpp->shmall;
94 }
95
96 static void
97 bsd_to_linux_shm_info( struct shm_info *bpp, struct l_shm_info *lpp)
98 {
99 lpp->used_ids = bpp->used_ids ;
100 lpp->shm_tot = bpp->shm_tot ;
101 lpp->shm_rss = bpp->shm_rss ;
102 lpp->shm_swp = bpp->shm_swp ;
103 lpp->swap_attempts = bpp->swap_attempts ;
104 lpp->swap_successes = bpp->swap_successes ;
105 }
106
107 struct l_ipc_perm {
108 l_key_t key;
109 l_uid16_t uid;
110 l_gid16_t gid;
111 l_uid16_t cuid;
112 l_gid16_t cgid;
113 l_ushort mode;
114 l_ushort seq;
115 };
116
117 static void
118 linux_to_bsd_ipc_perm(struct l_ipc_perm *lpp, struct ipc_perm *bpp)
119 {
120 bpp->key = lpp->key;
121 bpp->uid = lpp->uid;
122 bpp->gid = lpp->gid;
123 bpp->cuid = lpp->cuid;
124 bpp->cgid = lpp->cgid;
125 bpp->mode = lpp->mode;
126 bpp->seq = lpp->seq;
127 }
128
129
130 static void
131 bsd_to_linux_ipc_perm(struct ipc_perm *bpp, struct l_ipc_perm *lpp)
132 {
133 lpp->key = bpp->key;
134 lpp->uid = bpp->uid;
135 lpp->gid = bpp->gid;
136 lpp->cuid = bpp->cuid;
137 lpp->cgid = bpp->cgid;
138 lpp->mode = bpp->mode;
139 lpp->seq = bpp->seq;
140 }
141
142 struct l_msqid_ds {
143 struct l_ipc_perm msg_perm;
144 l_uintptr_t msg_first; /* first message on queue,unused */
145 l_uintptr_t msg_last; /* last message in queue,unused */
146 l_time_t msg_stime; /* last msgsnd time */
147 l_time_t msg_rtime; /* last msgrcv time */
148 l_time_t msg_ctime; /* last change time */
149 l_ulong msg_lcbytes; /* Reuse junk fields for 32 bit */
150 l_ulong msg_lqbytes; /* ditto */
151 l_ushort msg_cbytes; /* current number of bytes on queue */
152 l_ushort msg_qnum; /* number of messages in queue */
153 l_ushort msg_qbytes; /* max number of bytes on queue */
154 l_pid_t msg_lspid; /* pid of last msgsnd */
155 l_pid_t msg_lrpid; /* last receive pid */
156 }
157 #if defined(__amd64__) && defined(COMPAT_LINUX32)
158 __packed
159 #endif
160 ;
161
162 struct l_semid_ds {
163 struct l_ipc_perm sem_perm;
164 l_time_t sem_otime;
165 l_time_t sem_ctime;
166 l_uintptr_t sem_base;
167 l_uintptr_t sem_pending;
168 l_uintptr_t sem_pending_last;
169 l_uintptr_t undo;
170 l_ushort sem_nsems;
171 }
172 #if defined(__amd64__) && defined(COMPAT_LINUX32)
173 __packed
174 #endif
175 ;
176
177 struct l_shmid_ds {
178 struct l_ipc_perm shm_perm;
179 l_int shm_segsz;
180 l_time_t shm_atime;
181 l_time_t shm_dtime;
182 l_time_t shm_ctime;
183 l_ushort shm_cpid;
184 l_ushort shm_lpid;
185 l_short shm_nattch;
186 l_ushort private1;
187 l_uintptr_t private2;
188 l_uintptr_t private3;
189 };
190
191 static void
192 linux_to_bsd_semid_ds(struct l_semid_ds *lsp, struct semid_ds *bsp)
193 {
194 linux_to_bsd_ipc_perm(&lsp->sem_perm, &bsp->sem_perm);
195 bsp->sem_otime = lsp->sem_otime;
196 bsp->sem_ctime = lsp->sem_ctime;
197 bsp->sem_nsems = lsp->sem_nsems;
198 bsp->sem_base = PTRIN(lsp->sem_base);
199 }
200
201 static void
202 bsd_to_linux_semid_ds(struct semid_ds *bsp, struct l_semid_ds *lsp)
203 {
204 bsd_to_linux_ipc_perm(&bsp->sem_perm, &lsp->sem_perm);
205 lsp->sem_otime = bsp->sem_otime;
206 lsp->sem_ctime = bsp->sem_ctime;
207 lsp->sem_nsems = bsp->sem_nsems;
208 lsp->sem_base = PTROUT(bsp->sem_base);
209 }
210
211 static void
212 linux_to_bsd_shmid_ds(struct l_shmid_ds *lsp, struct shmid_ds *bsp)
213 {
214 linux_to_bsd_ipc_perm(&lsp->shm_perm, &bsp->shm_perm);
215 bsp->shm_segsz = lsp->shm_segsz;
216 bsp->shm_lpid = lsp->shm_lpid;
217 bsp->shm_cpid = lsp->shm_cpid;
218 bsp->shm_nattch = lsp->shm_nattch;
219 bsp->shm_atime = lsp->shm_atime;
220 bsp->shm_dtime = lsp->shm_dtime;
221 bsp->shm_ctime = lsp->shm_ctime;
222 /* this goes (yet) SOS */
223 bsp->shm_internal = PTRIN(lsp->private3);
224 }
225
226 static void
227 bsd_to_linux_shmid_ds(struct shmid_ds *bsp, struct l_shmid_ds *lsp)
228 {
229 bsd_to_linux_ipc_perm(&bsp->shm_perm, &lsp->shm_perm);
230 lsp->shm_segsz = bsp->shm_segsz;
231 lsp->shm_lpid = bsp->shm_lpid;
232 lsp->shm_cpid = bsp->shm_cpid;
233 lsp->shm_nattch = bsp->shm_nattch;
234 lsp->shm_atime = bsp->shm_atime;
235 lsp->shm_dtime = bsp->shm_dtime;
236 lsp->shm_ctime = bsp->shm_ctime;
237 /* this goes (yet) SOS */
238 lsp->private3 = PTROUT(bsp->shm_internal);
239 }
240
241 static void
242 linux_to_bsd_msqid_ds(struct l_msqid_ds *lsp, struct msqid_ds *bsp)
243 {
244 linux_to_bsd_ipc_perm(&lsp->msg_perm, &bsp->msg_perm);
245 bsp->msg_cbytes = lsp->msg_cbytes;
246 bsp->msg_qnum = lsp->msg_qnum;
247 bsp->msg_qbytes = lsp->msg_qbytes;
248 bsp->msg_lspid = lsp->msg_lspid;
249 bsp->msg_lrpid = lsp->msg_lrpid;
250 bsp->msg_stime = lsp->msg_stime;
251 bsp->msg_rtime = lsp->msg_rtime;
252 bsp->msg_ctime = lsp->msg_ctime;
253 }
254
255 static void
256 bsd_to_linux_msqid_ds(struct msqid_ds *bsp, struct l_msqid_ds *lsp)
257 {
258 bsd_to_linux_ipc_perm(&bsp->msg_perm, &lsp->msg_perm);
259 lsp->msg_cbytes = bsp->msg_cbytes;
260 lsp->msg_qnum = bsp->msg_qnum;
261 lsp->msg_qbytes = bsp->msg_qbytes;
262 lsp->msg_lspid = bsp->msg_lspid;
263 lsp->msg_lrpid = bsp->msg_lrpid;
264 lsp->msg_stime = bsp->msg_stime;
265 lsp->msg_rtime = bsp->msg_rtime;
266 lsp->msg_ctime = bsp->msg_ctime;
267 }
268
269 static void
270 linux_ipc_perm_to_ipc64_perm(struct l_ipc_perm *in, struct l_ipc64_perm *out)
271 {
272
273 /* XXX: do we really need to do something here? */
274 out->key = in->key;
275 out->uid = in->uid;
276 out->gid = in->gid;
277 out->cuid = in->cuid;
278 out->cgid = in->cgid;
279 out->mode = in->mode;
280 out->seq = in->seq;
281 }
282
283 static int
284 linux_msqid_pullup(l_int ver, struct l_msqid_ds *linux_msqid, caddr_t uaddr)
285 {
286 struct l_msqid64_ds linux_msqid64;
287 int error;
288
289 if (ver == LINUX_IPC_64) {
290 error = copyin(uaddr, &linux_msqid64, sizeof(linux_msqid64));
291 if (error != 0)
292 return (error);
293
294 bzero(linux_msqid, sizeof(*linux_msqid));
295
296 linux_msqid->msg_perm.uid = linux_msqid64.msg_perm.uid;
297 linux_msqid->msg_perm.gid = linux_msqid64.msg_perm.gid;
298 linux_msqid->msg_perm.mode = linux_msqid64.msg_perm.mode;
299
300 if (linux_msqid64.msg_qbytes > USHRT_MAX)
301 linux_msqid->msg_lqbytes = linux_msqid64.msg_qbytes;
302 else
303 linux_msqid->msg_qbytes = linux_msqid64.msg_qbytes;
304 } else {
305 error = copyin(uaddr, linux_msqid, sizeof(*linux_msqid));
306 }
307 return (error);
308 }
309
310 static int
311 linux_msqid_pushdown(l_int ver, struct l_msqid_ds *linux_msqid, caddr_t uaddr)
312 {
313 struct l_msqid64_ds linux_msqid64;
314
315 if (ver == LINUX_IPC_64) {
316 bzero(&linux_msqid64, sizeof(linux_msqid64));
317
318 linux_ipc_perm_to_ipc64_perm(&linux_msqid->msg_perm,
319 &linux_msqid64.msg_perm);
320
321 linux_msqid64.msg_stime = linux_msqid->msg_stime;
322 linux_msqid64.msg_rtime = linux_msqid->msg_rtime;
323 linux_msqid64.msg_ctime = linux_msqid->msg_ctime;
324
325 if (linux_msqid->msg_cbytes == 0)
326 linux_msqid64.msg_cbytes = linux_msqid->msg_lcbytes;
327 else
328 linux_msqid64.msg_cbytes = linux_msqid->msg_cbytes;
329
330 linux_msqid64.msg_qnum = linux_msqid->msg_qnum;
331
332 if (linux_msqid->msg_qbytes == 0)
333 linux_msqid64.msg_qbytes = linux_msqid->msg_lqbytes;
334 else
335 linux_msqid64.msg_qbytes = linux_msqid->msg_qbytes;
336
337 linux_msqid64.msg_lspid = linux_msqid->msg_lspid;
338 linux_msqid64.msg_lrpid = linux_msqid->msg_lrpid;
339
340 return (copyout(&linux_msqid64, uaddr, sizeof(linux_msqid64)));
341 } else {
342 return (copyout(linux_msqid, uaddr, sizeof(*linux_msqid)));
343 }
344 }
345
346 static int
347 linux_semid_pullup(l_int ver, struct l_semid_ds *linux_semid, caddr_t uaddr)
348 {
349 struct l_semid64_ds linux_semid64;
350 int error;
351
352 if (ver == LINUX_IPC_64) {
353 error = copyin(uaddr, &linux_semid64, sizeof(linux_semid64));
354 if (error != 0)
355 return (error);
356
357 bzero(linux_semid, sizeof(*linux_semid));
358
359 linux_semid->sem_perm.uid = linux_semid64.sem_perm.uid;
360 linux_semid->sem_perm.gid = linux_semid64.sem_perm.gid;
361 linux_semid->sem_perm.mode = linux_semid64.sem_perm.mode;
362 } else {
363 error = copyin(uaddr, linux_semid, sizeof(*linux_semid));
364 }
365 return (error);
366 }
367
368 static int
369 linux_semid_pushdown(l_int ver, struct l_semid_ds *linux_semid, caddr_t uaddr)
370 {
371 struct l_semid64_ds linux_semid64;
372
373 if (ver == LINUX_IPC_64) {
374 bzero(&linux_semid64, sizeof(linux_semid64));
375
376 linux_ipc_perm_to_ipc64_perm(&linux_semid->sem_perm,
377 &linux_semid64.sem_perm);
378
379 linux_semid64.sem_otime = linux_semid->sem_otime;
380 linux_semid64.sem_ctime = linux_semid->sem_ctime;
381 linux_semid64.sem_nsems = linux_semid->sem_nsems;
382
383 return (copyout(&linux_semid64, uaddr, sizeof(linux_semid64)));
384 } else {
385 return (copyout(linux_semid, uaddr, sizeof(*linux_semid)));
386 }
387 }
388
389 static int
390 linux_shmid_pullup(l_int ver, struct l_shmid_ds *linux_shmid, caddr_t uaddr)
391 {
392 struct l_shmid64_ds linux_shmid64;
393 int error;
394
395 if (ver == LINUX_IPC_64) {
396 error = copyin(uaddr, &linux_shmid64, sizeof(linux_shmid64));
397 if (error != 0)
398 return (error);
399
400 bzero(linux_shmid, sizeof(*linux_shmid));
401
402 linux_shmid->shm_perm.uid = linux_shmid64.shm_perm.uid;
403 linux_shmid->shm_perm.gid = linux_shmid64.shm_perm.gid;
404 linux_shmid->shm_perm.mode = linux_shmid64.shm_perm.mode;
405 } else {
406 error = copyin(uaddr, linux_shmid, sizeof(*linux_shmid));
407 }
408 return (error);
409 }
410
411 static int
412 linux_shmid_pushdown(l_int ver, struct l_shmid_ds *linux_shmid, caddr_t uaddr)
413 {
414 struct l_shmid64_ds linux_shmid64;
415
416 if (ver == LINUX_IPC_64) {
417 bzero(&linux_shmid64, sizeof(linux_shmid64));
418
419 linux_ipc_perm_to_ipc64_perm(&linux_shmid->shm_perm,
420 &linux_shmid64.shm_perm);
421
422 linux_shmid64.shm_segsz = linux_shmid->shm_segsz;
423 linux_shmid64.shm_atime = linux_shmid->shm_atime;
424 linux_shmid64.shm_dtime = linux_shmid->shm_dtime;
425 linux_shmid64.shm_ctime = linux_shmid->shm_ctime;
426 linux_shmid64.shm_cpid = linux_shmid->shm_cpid;
427 linux_shmid64.shm_lpid = linux_shmid->shm_lpid;
428 linux_shmid64.shm_nattch = linux_shmid->shm_nattch;
429
430 return (copyout(&linux_shmid64, uaddr, sizeof(linux_shmid64)));
431 } else {
432 return (copyout(linux_shmid, uaddr, sizeof(*linux_shmid)));
433 }
434 }
435
436 static int
437 linux_shminfo_pushdown(l_int ver, struct l_shminfo *linux_shminfo,
438 caddr_t uaddr)
439 {
440 struct l_shminfo64 linux_shminfo64;
441
442 if (ver == LINUX_IPC_64) {
443 bzero(&linux_shminfo64, sizeof(linux_shminfo64));
444
445 linux_shminfo64.shmmax = linux_shminfo->shmmax;
446 linux_shminfo64.shmmin = linux_shminfo->shmmin;
447 linux_shminfo64.shmmni = linux_shminfo->shmmni;
448 linux_shminfo64.shmseg = linux_shminfo->shmseg;
449 linux_shminfo64.shmall = linux_shminfo->shmall;
450
451 return (copyout(&linux_shminfo64, uaddr,
452 sizeof(linux_shminfo64)));
453 } else {
454 return (copyout(linux_shminfo, uaddr, sizeof(*linux_shminfo)));
455 }
456 }
457
458 int
459 linux_semop(struct thread *td, struct linux_semop_args *args)
460 {
461 struct semop_args /* {
462 int semid;
463 struct sembuf *sops;
464 int nsops;
465 } */ bsd_args;
466
467 bsd_args.semid = args->semid;
468 bsd_args.sops = PTRIN(args->tsops);
469 bsd_args.nsops = args->nsops;
470 return semop(td, &bsd_args);
471 }
472
473 int
474 linux_semget(struct thread *td, struct linux_semget_args *args)
475 {
476 struct semget_args /* {
477 key_t key;
478 int nsems;
479 int semflg;
480 } */ bsd_args;
481
482 if (args->nsems < 0)
483 return (EINVAL);
484 bsd_args.key = args->key;
485 bsd_args.nsems = args->nsems;
486 bsd_args.semflg = args->semflg;
487 return semget(td, &bsd_args);
488 }
489
490 int
491 linux_semctl(struct thread *td, struct linux_semctl_args *args)
492 {
493 struct l_semid_ds linux_semid;
494 struct l_seminfo linux_seminfo;
495 struct semid_ds semid;
496 union semun semun;
497 register_t rval;
498 int cmd, error;
499
500 switch (args->cmd & ~LINUX_IPC_64) {
501 case LINUX_IPC_RMID:
502 cmd = IPC_RMID;
503 break;
504 case LINUX_GETNCNT:
505 cmd = GETNCNT;
506 break;
507 case LINUX_GETPID:
508 cmd = GETPID;
509 break;
510 case LINUX_GETVAL:
511 cmd = GETVAL;
512 break;
513 case LINUX_GETZCNT:
514 cmd = GETZCNT;
515 break;
516 case LINUX_SETVAL:
517 cmd = SETVAL;
518 semun.val = args->arg.val;
519 break;
520 case LINUX_IPC_SET:
521 cmd = IPC_SET;
522 error = linux_semid_pullup(args->cmd & LINUX_IPC_64,
523 &linux_semid, PTRIN(args->arg.buf));
524 if (error)
525 return (error);
526 linux_to_bsd_semid_ds(&linux_semid, &semid);
527 semun.buf = &semid;
528 return (kern_semctl(td, args->semid, args->semnum, cmd, &semun,
529 td->td_retval));
530 case LINUX_IPC_STAT:
531 case LINUX_SEM_STAT:
532 if ((args->cmd & ~LINUX_IPC_64) == LINUX_IPC_STAT)
533 cmd = IPC_STAT;
534 else
535 cmd = SEM_STAT;
536 semun.buf = &semid;
537 error = kern_semctl(td, args->semid, args->semnum, cmd, &semun,
538 &rval);
539 if (error)
540 return (error);
541 bsd_to_linux_semid_ds(&semid, &linux_semid);
542 error = linux_semid_pushdown(args->cmd & LINUX_IPC_64,
543 &linux_semid, PTRIN(args->arg.buf));
544 if (error == 0)
545 td->td_retval[0] = (cmd == SEM_STAT) ? rval : 0;
546 return (error);
547 case LINUX_IPC_INFO:
548 case LINUX_SEM_INFO:
549 bcopy(&seminfo, &linux_seminfo, sizeof(linux_seminfo) );
550 /* XXX BSD equivalent?
551 #define used_semids 10
552 #define used_sems 10
553 linux_seminfo.semusz = used_semids;
554 linux_seminfo.semaem = used_sems;
555 */
556 error = copyout(&linux_seminfo,
557 PTRIN(args->arg.buf), sizeof(linux_seminfo));
558 if (error)
559 return error;
560 td->td_retval[0] = seminfo.semmni;
561 return 0; /* No need for __semctl call */
562 case LINUX_GETALL:
563 /* FALLTHROUGH */
564 case LINUX_SETALL:
565 /* FALLTHROUGH */
566 default:
567 linux_msg(td, "ipc type %d is not implemented",
568 args->cmd & ~LINUX_IPC_64);
569 return EINVAL;
570 }
571 return (kern_semctl(td, args->semid, args->semnum, cmd, &semun,
572 td->td_retval));
573 }
574
575 int
576 linux_msgsnd(struct thread *td, struct linux_msgsnd_args *args)
577 {
578 const void *msgp;
579 long mtype;
580 l_long lmtype;
581 int error;
582
583 if ((l_long)args->msgsz < 0 || args->msgsz > (l_long)msginfo.msgmax)
584 return (EINVAL);
585 msgp = PTRIN(args->msgp);
586 if ((error = copyin(msgp, &lmtype, sizeof(lmtype))) != 0)
587 return (error);
588 mtype = (long)lmtype;
589 return (kern_msgsnd(td, args->msqid,
590 (const char *)msgp + sizeof(lmtype),
591 args->msgsz, args->msgflg, mtype));
592 }
593
594 int
595 linux_msgrcv(struct thread *td, struct linux_msgrcv_args *args)
596 {
597 void *msgp;
598 long mtype;
599 l_long lmtype;
600 int error;
601
602 if ((l_long)args->msgsz < 0 || args->msgsz > (l_long)msginfo.msgmax)
603 return (EINVAL);
604 msgp = PTRIN(args->msgp);
605 if ((error = kern_msgrcv(td, args->msqid,
606 (char *)msgp + sizeof(lmtype), args->msgsz,
607 args->msgtyp, args->msgflg, &mtype)) != 0)
608 return (error);
609 lmtype = (l_long)mtype;
610 return (copyout(&lmtype, msgp, sizeof(lmtype)));
611 }
612
613 int
614 linux_msgget(struct thread *td, struct linux_msgget_args *args)
615 {
616 struct msgget_args /* {
617 key_t key;
618 int msgflg;
619 } */ bsd_args;
620
621 bsd_args.key = args->key;
622 bsd_args.msgflg = args->msgflg;
623 return msgget(td, &bsd_args);
624 }
625
626 int
627 linux_msgctl(struct thread *td, struct linux_msgctl_args *args)
628 {
629 int error, bsd_cmd;
630 struct l_msqid_ds linux_msqid;
631 struct msqid_ds bsd_msqid;
632
633 bsd_cmd = args->cmd & ~LINUX_IPC_64;
634 if (bsd_cmd == LINUX_IPC_SET) {
635 error = linux_msqid_pullup(args->cmd & LINUX_IPC_64,
636 &linux_msqid, PTRIN(args->buf));
637 if (error)
638 return (error);
639 linux_to_bsd_msqid_ds(&linux_msqid, &bsd_msqid);
640 }
641
642 error = kern_msgctl(td, args->msqid, bsd_cmd, &bsd_msqid);
643 if (error != 0)
644 if (bsd_cmd != LINUX_IPC_RMID || error != EINVAL)
645 return (error);
646
647 if (bsd_cmd == LINUX_IPC_STAT) {
648 bsd_to_linux_msqid_ds(&bsd_msqid, &linux_msqid);
649 return (linux_msqid_pushdown(args->cmd & LINUX_IPC_64,
650 &linux_msqid, PTRIN(args->buf)));
651 }
652
653 return (0);
654 }
655
656 int
657 linux_shmat(struct thread *td, struct linux_shmat_args *args)
658 {
659 struct shmat_args /* {
660 int shmid;
661 void *shmaddr;
662 int shmflg;
663 } */ bsd_args;
664 int error;
665 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
666 l_uintptr_t addr;
667 #endif
668
669 bsd_args.shmid = args->shmid;
670 bsd_args.shmaddr = PTRIN(args->shmaddr);
671 bsd_args.shmflg = args->shmflg;
672 if ((error = shmat(td, &bsd_args)))
673 return error;
674 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
675 addr = td->td_retval[0];
676 if ((error = copyout(&addr, PTRIN(args->raddr), sizeof(addr))))
677 return error;
678 td->td_retval[0] = 0;
679 #endif
680 return 0;
681 }
682
683 int
684 linux_shmdt(struct thread *td, struct linux_shmdt_args *args)
685 {
686 struct shmdt_args /* {
687 void *shmaddr;
688 } */ bsd_args;
689
690 bsd_args.shmaddr = PTRIN(args->shmaddr);
691 return shmdt(td, &bsd_args);
692 }
693
694 int
695 linux_shmget(struct thread *td, struct linux_shmget_args *args)
696 {
697 struct shmget_args /* {
698 key_t key;
699 int size;
700 int shmflg;
701 } */ bsd_args;
702
703 bsd_args.key = args->key;
704 bsd_args.size = args->size;
705 bsd_args.shmflg = args->shmflg;
706 return shmget(td, &bsd_args);
707 }
708
709 int
710 linux_shmctl(struct thread *td, struct linux_shmctl_args *args)
711 {
712 struct l_shmid_ds linux_shmid;
713 struct l_shminfo linux_shminfo;
714 struct l_shm_info linux_shm_info;
715 struct shmid_ds bsd_shmid;
716 int error;
717
718 switch (args->cmd & ~LINUX_IPC_64) {
719
720 case LINUX_IPC_INFO: {
721 struct shminfo bsd_shminfo;
722
723 /* Perform shmctl wanting removed segments lookup */
724 error = kern_shmctl(td, args->shmid, IPC_INFO,
725 (void *)&bsd_shminfo, NULL);
726 if (error)
727 return error;
728
729 bsd_to_linux_shminfo(&bsd_shminfo, &linux_shminfo);
730
731 return (linux_shminfo_pushdown(args->cmd & LINUX_IPC_64,
732 &linux_shminfo, PTRIN(args->buf)));
733 }
734
735 case LINUX_SHM_INFO: {
736 struct shm_info bsd_shm_info;
737
738 /* Perform shmctl wanting removed segments lookup */
739 error = kern_shmctl(td, args->shmid, SHM_INFO,
740 (void *)&bsd_shm_info, NULL);
741 if (error)
742 return error;
743
744 bsd_to_linux_shm_info(&bsd_shm_info, &linux_shm_info);
745
746 return copyout(&linux_shm_info, PTRIN(args->buf),
747 sizeof(struct l_shm_info));
748 }
749
750 case LINUX_IPC_STAT:
751 /* Perform shmctl wanting removed segments lookup */
752 error = kern_shmctl(td, args->shmid, IPC_STAT,
753 (void *)&bsd_shmid, NULL);
754 if (error)
755 return error;
756
757 bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid);
758
759 return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64,
760 &linux_shmid, PTRIN(args->buf)));
761
762 case LINUX_SHM_STAT:
763 /* Perform shmctl wanting removed segments lookup */
764 error = kern_shmctl(td, args->shmid, IPC_STAT,
765 (void *)&bsd_shmid, NULL);
766 if (error)
767 return error;
768
769 bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid);
770
771 return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64,
772 &linux_shmid, PTRIN(args->buf)));
773
774 case LINUX_IPC_SET:
775 error = linux_shmid_pullup(args->cmd & LINUX_IPC_64,
776 &linux_shmid, PTRIN(args->buf));
777 if (error)
778 return error;
779
780 linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
781
782 /* Perform shmctl wanting removed segments lookup */
783 return kern_shmctl(td, args->shmid, IPC_SET,
784 (void *)&bsd_shmid, NULL);
785
786 case LINUX_IPC_RMID: {
787 void *buf;
788
789 if (args->buf == 0)
790 buf = NULL;
791 else {
792 error = linux_shmid_pullup(args->cmd & LINUX_IPC_64,
793 &linux_shmid, PTRIN(args->buf));
794 if (error)
795 return error;
796 linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
797 buf = (void *)&bsd_shmid;
798 }
799 return kern_shmctl(td, args->shmid, IPC_RMID, buf, NULL);
800 }
801
802 case LINUX_SHM_LOCK:
803 case LINUX_SHM_UNLOCK:
804 default:
805 linux_msg(td, "ipc typ=%d not implemented", args->cmd & ~LINUX_IPC_64);
806 return EINVAL;
807 }
808 }
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