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: src/sys/compat/linux/linux_ipc.c,v 1.55 2008/11/26 16:38:43 rdivacky Exp $");
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 struct l_msginfo {
87 l_int msgpool;
88 l_int msgmap;
89 l_int msgmax;
90 l_int msgmnb;
91 l_int msgmni;
92 l_int msgssz;
93 l_int msgtql;
94 l_ushort msgseg;
95 };
96
97 static void
98 bsd_to_linux_shminfo( struct shminfo *bpp, struct l_shminfo *lpp)
99 {
100 lpp->shmmax = bpp->shmmax;
101 lpp->shmmin = bpp->shmmin;
102 lpp->shmmni = bpp->shmmni;
103 lpp->shmseg = bpp->shmseg;
104 lpp->shmall = bpp->shmall;
105 }
106
107 static void
108 bsd_to_linux_shm_info( struct shm_info *bpp, struct l_shm_info *lpp)
109 {
110 lpp->used_ids = bpp->used_ids ;
111 lpp->shm_tot = bpp->shm_tot ;
112 lpp->shm_rss = bpp->shm_rss ;
113 lpp->shm_swp = bpp->shm_swp ;
114 lpp->swap_attempts = bpp->swap_attempts ;
115 lpp->swap_successes = bpp->swap_successes ;
116 }
117
118 struct l_ipc_perm {
119 l_key_t key;
120 l_uid16_t uid;
121 l_gid16_t gid;
122 l_uid16_t cuid;
123 l_gid16_t cgid;
124 l_ushort mode;
125 l_ushort seq;
126 };
127
128 static void
129 linux_to_bsd_ipc_perm(struct l_ipc_perm *lpp, struct ipc_perm *bpp)
130 {
131 bpp->key = lpp->key;
132 bpp->uid = lpp->uid;
133 bpp->gid = lpp->gid;
134 bpp->cuid = lpp->cuid;
135 bpp->cgid = lpp->cgid;
136 bpp->mode = lpp->mode;
137 bpp->seq = lpp->seq;
138 }
139
140
141 static void
142 bsd_to_linux_ipc_perm(struct ipc_perm *bpp, struct l_ipc_perm *lpp)
143 {
144 lpp->key = bpp->key;
145 lpp->uid = bpp->uid;
146 lpp->gid = bpp->gid;
147 lpp->cuid = bpp->cuid;
148 lpp->cgid = bpp->cgid;
149 lpp->mode = bpp->mode;
150 lpp->seq = bpp->seq;
151 }
152
153 struct l_msqid_ds {
154 struct l_ipc_perm msg_perm;
155 l_uintptr_t msg_first; /* first message on queue,unused */
156 l_uintptr_t msg_last; /* last message in queue,unused */
157 l_time_t msg_stime; /* last msgsnd time */
158 l_time_t msg_rtime; /* last msgrcv time */
159 l_time_t msg_ctime; /* last change time */
160 l_ulong msg_lcbytes; /* Reuse junk fields for 32 bit */
161 l_ulong msg_lqbytes; /* ditto */
162 l_ushort msg_cbytes; /* current number of bytes on queue */
163 l_ushort msg_qnum; /* number of messages in queue */
164 l_ushort msg_qbytes; /* max number of bytes on queue */
165 l_pid_t msg_lspid; /* pid of last msgsnd */
166 l_pid_t msg_lrpid; /* last receive pid */
167 }
168 #if defined(__amd64__) && defined(COMPAT_LINUX32)
169 __packed
170 #endif
171 ;
172
173 struct l_semid_ds {
174 struct l_ipc_perm sem_perm;
175 l_time_t sem_otime;
176 l_time_t sem_ctime;
177 l_uintptr_t sem_base;
178 l_uintptr_t sem_pending;
179 l_uintptr_t sem_pending_last;
180 l_uintptr_t undo;
181 l_ushort sem_nsems;
182 }
183 #if defined(__amd64__) && defined(COMPAT_LINUX32)
184 __packed
185 #endif
186 ;
187
188 struct l_shmid_ds {
189 struct l_ipc_perm shm_perm;
190 l_int shm_segsz;
191 l_time_t shm_atime;
192 l_time_t shm_dtime;
193 l_time_t shm_ctime;
194 l_ushort shm_cpid;
195 l_ushort shm_lpid;
196 l_short shm_nattch;
197 l_ushort private1;
198 l_uintptr_t private2;
199 l_uintptr_t private3;
200 };
201
202 static void
203 linux_to_bsd_semid_ds(struct l_semid_ds *lsp, struct semid_ds *bsp)
204 {
205 linux_to_bsd_ipc_perm(&lsp->sem_perm, &bsp->sem_perm);
206 bsp->sem_otime = lsp->sem_otime;
207 bsp->sem_ctime = lsp->sem_ctime;
208 bsp->sem_nsems = lsp->sem_nsems;
209 bsp->sem_base = PTRIN(lsp->sem_base);
210 }
211
212 static void
213 bsd_to_linux_semid_ds(struct semid_ds *bsp, struct l_semid_ds *lsp)
214 {
215 bsd_to_linux_ipc_perm(&bsp->sem_perm, &lsp->sem_perm);
216 lsp->sem_otime = bsp->sem_otime;
217 lsp->sem_ctime = bsp->sem_ctime;
218 lsp->sem_nsems = bsp->sem_nsems;
219 lsp->sem_base = PTROUT(bsp->sem_base);
220 }
221
222 static void
223 linux_to_bsd_shmid_ds(struct l_shmid_ds *lsp, struct shmid_ds *bsp)
224 {
225 linux_to_bsd_ipc_perm(&lsp->shm_perm, &bsp->shm_perm);
226 bsp->shm_segsz = lsp->shm_segsz;
227 bsp->shm_lpid = lsp->shm_lpid;
228 bsp->shm_cpid = lsp->shm_cpid;
229 bsp->shm_nattch = lsp->shm_nattch;
230 bsp->shm_atime = lsp->shm_atime;
231 bsp->shm_dtime = lsp->shm_dtime;
232 bsp->shm_ctime = lsp->shm_ctime;
233 /* this goes (yet) SOS */
234 bsp->shm_internal = PTRIN(lsp->private3);
235 }
236
237 static void
238 bsd_to_linux_shmid_ds(struct shmid_ds *bsp, struct l_shmid_ds *lsp)
239 {
240 bsd_to_linux_ipc_perm(&bsp->shm_perm, &lsp->shm_perm);
241 lsp->shm_segsz = bsp->shm_segsz;
242 lsp->shm_lpid = bsp->shm_lpid;
243 lsp->shm_cpid = bsp->shm_cpid;
244 lsp->shm_nattch = bsp->shm_nattch;
245 lsp->shm_atime = bsp->shm_atime;
246 lsp->shm_dtime = bsp->shm_dtime;
247 lsp->shm_ctime = bsp->shm_ctime;
248 /* this goes (yet) SOS */
249 lsp->private3 = PTROUT(bsp->shm_internal);
250 }
251
252 static void
253 linux_to_bsd_msqid_ds(struct l_msqid_ds *lsp, struct msqid_ds *bsp)
254 {
255 linux_to_bsd_ipc_perm(&lsp->msg_perm, &bsp->msg_perm);
256 bsp->msg_cbytes = lsp->msg_cbytes;
257 bsp->msg_qnum = lsp->msg_qnum;
258 bsp->msg_qbytes = lsp->msg_qbytes;
259 bsp->msg_lspid = lsp->msg_lspid;
260 bsp->msg_lrpid = lsp->msg_lrpid;
261 bsp->msg_stime = lsp->msg_stime;
262 bsp->msg_rtime = lsp->msg_rtime;
263 bsp->msg_ctime = lsp->msg_ctime;
264 }
265
266 static void
267 bsd_to_linux_msqid_ds(struct msqid_ds *bsp, struct l_msqid_ds *lsp)
268 {
269 bsd_to_linux_ipc_perm(&bsp->msg_perm, &lsp->msg_perm);
270 lsp->msg_cbytes = bsp->msg_cbytes;
271 lsp->msg_qnum = bsp->msg_qnum;
272 lsp->msg_qbytes = bsp->msg_qbytes;
273 lsp->msg_lspid = bsp->msg_lspid;
274 lsp->msg_lrpid = bsp->msg_lrpid;
275 lsp->msg_stime = bsp->msg_stime;
276 lsp->msg_rtime = bsp->msg_rtime;
277 lsp->msg_ctime = bsp->msg_ctime;
278 }
279
280 static void
281 linux_ipc_perm_to_ipc64_perm(struct l_ipc_perm *in, struct l_ipc64_perm *out)
282 {
283
284 /* XXX: do we really need to do something here? */
285 out->key = in->key;
286 out->uid = in->uid;
287 out->gid = in->gid;
288 out->cuid = in->cuid;
289 out->cgid = in->cgid;
290 out->mode = in->mode;
291 out->seq = in->seq;
292 }
293
294 static int
295 linux_msqid_pullup(l_int ver, struct l_msqid_ds *linux_msqid, caddr_t uaddr)
296 {
297 struct l_msqid64_ds linux_msqid64;
298 int error;
299
300 if (ver == LINUX_IPC_64) {
301 error = copyin(uaddr, &linux_msqid64, sizeof(linux_msqid64));
302 if (error != 0)
303 return (error);
304
305 bzero(linux_msqid, sizeof(*linux_msqid));
306
307 linux_msqid->msg_perm.uid = linux_msqid64.msg_perm.uid;
308 linux_msqid->msg_perm.gid = linux_msqid64.msg_perm.gid;
309 linux_msqid->msg_perm.mode = linux_msqid64.msg_perm.mode;
310
311 if (linux_msqid64.msg_qbytes > USHRT_MAX)
312 linux_msqid->msg_lqbytes = linux_msqid64.msg_qbytes;
313 else
314 linux_msqid->msg_qbytes = linux_msqid64.msg_qbytes;
315 } else {
316 error = copyin(uaddr, linux_msqid, sizeof(*linux_msqid));
317 }
318 return (error);
319 }
320
321 static int
322 linux_msqid_pushdown(l_int ver, struct l_msqid_ds *linux_msqid, caddr_t uaddr)
323 {
324 struct l_msqid64_ds linux_msqid64;
325
326 if (ver == LINUX_IPC_64) {
327 bzero(&linux_msqid64, sizeof(linux_msqid64));
328
329 linux_ipc_perm_to_ipc64_perm(&linux_msqid->msg_perm,
330 &linux_msqid64.msg_perm);
331
332 linux_msqid64.msg_stime = linux_msqid->msg_stime;
333 linux_msqid64.msg_rtime = linux_msqid->msg_rtime;
334 linux_msqid64.msg_ctime = linux_msqid->msg_ctime;
335
336 if (linux_msqid->msg_cbytes == 0)
337 linux_msqid64.msg_cbytes = linux_msqid->msg_lcbytes;
338 else
339 linux_msqid64.msg_cbytes = linux_msqid->msg_cbytes;
340
341 linux_msqid64.msg_qnum = linux_msqid->msg_qnum;
342
343 if (linux_msqid->msg_qbytes == 0)
344 linux_msqid64.msg_qbytes = linux_msqid->msg_lqbytes;
345 else
346 linux_msqid64.msg_qbytes = linux_msqid->msg_qbytes;
347
348 linux_msqid64.msg_lspid = linux_msqid->msg_lspid;
349 linux_msqid64.msg_lrpid = linux_msqid->msg_lrpid;
350
351 return (copyout(&linux_msqid64, uaddr, sizeof(linux_msqid64)));
352 } else {
353 return (copyout(linux_msqid, uaddr, sizeof(*linux_msqid)));
354 }
355 }
356
357 static int
358 linux_semid_pullup(l_int ver, struct l_semid_ds *linux_semid, caddr_t uaddr)
359 {
360 struct l_semid64_ds linux_semid64;
361 int error;
362
363 if (ver == LINUX_IPC_64) {
364 error = copyin(uaddr, &linux_semid64, sizeof(linux_semid64));
365 if (error != 0)
366 return (error);
367
368 bzero(linux_semid, sizeof(*linux_semid));
369
370 linux_semid->sem_perm.uid = linux_semid64.sem_perm.uid;
371 linux_semid->sem_perm.gid = linux_semid64.sem_perm.gid;
372 linux_semid->sem_perm.mode = linux_semid64.sem_perm.mode;
373 } else {
374 error = copyin(uaddr, linux_semid, sizeof(*linux_semid));
375 }
376 return (error);
377 }
378
379 static int
380 linux_semid_pushdown(l_int ver, struct l_semid_ds *linux_semid, caddr_t uaddr)
381 {
382 struct l_semid64_ds linux_semid64;
383
384 if (ver == LINUX_IPC_64) {
385 bzero(&linux_semid64, sizeof(linux_semid64));
386
387 linux_ipc_perm_to_ipc64_perm(&linux_semid->sem_perm,
388 &linux_semid64.sem_perm);
389
390 linux_semid64.sem_otime = linux_semid->sem_otime;
391 linux_semid64.sem_ctime = linux_semid->sem_ctime;
392 linux_semid64.sem_nsems = linux_semid->sem_nsems;
393
394 return (copyout(&linux_semid64, uaddr, sizeof(linux_semid64)));
395 } else {
396 return (copyout(linux_semid, uaddr, sizeof(*linux_semid)));
397 }
398 }
399
400 static int
401 linux_shmid_pullup(l_int ver, struct l_shmid_ds *linux_shmid, caddr_t uaddr)
402 {
403 struct l_shmid64_ds linux_shmid64;
404 int error;
405
406 if (ver == LINUX_IPC_64) {
407 error = copyin(uaddr, &linux_shmid64, sizeof(linux_shmid64));
408 if (error != 0)
409 return (error);
410
411 bzero(linux_shmid, sizeof(*linux_shmid));
412
413 linux_shmid->shm_perm.uid = linux_shmid64.shm_perm.uid;
414 linux_shmid->shm_perm.gid = linux_shmid64.shm_perm.gid;
415 linux_shmid->shm_perm.mode = linux_shmid64.shm_perm.mode;
416 } else {
417 error = copyin(uaddr, linux_shmid, sizeof(*linux_shmid));
418 }
419 return (error);
420 }
421
422 static int
423 linux_shmid_pushdown(l_int ver, struct l_shmid_ds *linux_shmid, caddr_t uaddr)
424 {
425 struct l_shmid64_ds linux_shmid64;
426
427 if (ver == LINUX_IPC_64) {
428 bzero(&linux_shmid64, sizeof(linux_shmid64));
429
430 linux_ipc_perm_to_ipc64_perm(&linux_shmid->shm_perm,
431 &linux_shmid64.shm_perm);
432
433 linux_shmid64.shm_segsz = linux_shmid->shm_segsz;
434 linux_shmid64.shm_atime = linux_shmid->shm_atime;
435 linux_shmid64.shm_dtime = linux_shmid->shm_dtime;
436 linux_shmid64.shm_ctime = linux_shmid->shm_ctime;
437 linux_shmid64.shm_cpid = linux_shmid->shm_cpid;
438 linux_shmid64.shm_lpid = linux_shmid->shm_lpid;
439 linux_shmid64.shm_nattch = linux_shmid->shm_nattch;
440
441 return (copyout(&linux_shmid64, uaddr, sizeof(linux_shmid64)));
442 } else {
443 return (copyout(linux_shmid, uaddr, sizeof(*linux_shmid)));
444 }
445 }
446
447 static int
448 linux_shminfo_pushdown(l_int ver, struct l_shminfo *linux_shminfo,
449 caddr_t uaddr)
450 {
451 struct l_shminfo64 linux_shminfo64;
452
453 if (ver == LINUX_IPC_64) {
454 bzero(&linux_shminfo64, sizeof(linux_shminfo64));
455
456 linux_shminfo64.shmmax = linux_shminfo->shmmax;
457 linux_shminfo64.shmmin = linux_shminfo->shmmin;
458 linux_shminfo64.shmmni = linux_shminfo->shmmni;
459 linux_shminfo64.shmseg = linux_shminfo->shmseg;
460 linux_shminfo64.shmall = linux_shminfo->shmall;
461
462 return (copyout(&linux_shminfo64, uaddr,
463 sizeof(linux_shminfo64)));
464 } else {
465 return (copyout(linux_shminfo, uaddr, sizeof(*linux_shminfo)));
466 }
467 }
468
469 int
470 linux_semop(struct thread *td, struct linux_semop_args *args)
471 {
472 struct semop_args /* {
473 int semid;
474 struct sembuf *sops;
475 int nsops;
476 } */ bsd_args;
477
478 bsd_args.semid = args->semid;
479 bsd_args.sops = PTRIN(args->tsops);
480 bsd_args.nsops = args->nsops;
481 return semop(td, &bsd_args);
482 }
483
484 int
485 linux_semget(struct thread *td, struct linux_semget_args *args)
486 {
487 struct semget_args /* {
488 key_t key;
489 int nsems;
490 int semflg;
491 } */ bsd_args;
492
493 if (args->nsems < 0)
494 return (EINVAL);
495 bsd_args.key = args->key;
496 bsd_args.nsems = args->nsems;
497 bsd_args.semflg = args->semflg;
498 return semget(td, &bsd_args);
499 }
500
501 int
502 linux_semctl(struct thread *td, struct linux_semctl_args *args)
503 {
504 struct l_semid_ds linux_semid;
505 struct l_seminfo linux_seminfo;
506 struct semid_ds semid;
507 union semun semun;
508 register_t rval;
509 int cmd, error;
510
511 switch (args->cmd & ~LINUX_IPC_64) {
512 case LINUX_IPC_RMID:
513 cmd = IPC_RMID;
514 break;
515 case LINUX_GETNCNT:
516 cmd = GETNCNT;
517 break;
518 case LINUX_GETPID:
519 cmd = GETPID;
520 break;
521 case LINUX_GETVAL:
522 cmd = GETVAL;
523 break;
524 case LINUX_GETZCNT:
525 cmd = GETZCNT;
526 break;
527 case LINUX_SETVAL:
528 cmd = SETVAL;
529 semun.val = args->arg.val;
530 break;
531 case LINUX_IPC_SET:
532 cmd = IPC_SET;
533 error = linux_semid_pullup(args->cmd & LINUX_IPC_64,
534 &linux_semid, PTRIN(args->arg.buf));
535 if (error)
536 return (error);
537 linux_to_bsd_semid_ds(&linux_semid, &semid);
538 semun.buf = &semid;
539 return (kern_semctl(td, args->semid, args->semnum, cmd, &semun,
540 td->td_retval));
541 case LINUX_IPC_STAT:
542 case LINUX_SEM_STAT:
543 if ((args->cmd & ~LINUX_IPC_64) == LINUX_IPC_STAT)
544 cmd = IPC_STAT;
545 else
546 cmd = SEM_STAT;
547 semun.buf = &semid;
548 error = kern_semctl(td, args->semid, args->semnum, cmd, &semun,
549 &rval);
550 if (error)
551 return (error);
552 bsd_to_linux_semid_ds(&semid, &linux_semid);
553 error = linux_semid_pushdown(args->cmd & LINUX_IPC_64,
554 &linux_semid, PTRIN(args->arg.buf));
555 if (error == 0)
556 td->td_retval[0] = (cmd == SEM_STAT) ? rval : 0;
557 return (error);
558 case LINUX_IPC_INFO:
559 case LINUX_SEM_INFO:
560 bcopy(&seminfo, &linux_seminfo, sizeof(linux_seminfo) );
561 /* XXX BSD equivalent?
562 #define used_semids 10
563 #define used_sems 10
564 linux_seminfo.semusz = used_semids;
565 linux_seminfo.semaem = used_sems;
566 */
567 error = copyout(&linux_seminfo,
568 PTRIN(args->arg.buf), sizeof(linux_seminfo));
569 if (error)
570 return error;
571 td->td_retval[0] = seminfo.semmni;
572 return 0; /* No need for __semctl call */
573 case LINUX_GETALL:
574 cmd = GETALL;
575 semun.val = args->arg.val;
576 break;
577 case LINUX_SETALL:
578 cmd = SETALL;
579 semun.val = args->arg.val;
580 break;
581 default:
582 linux_msg(td, "ipc type %d is not implemented",
583 args->cmd & ~LINUX_IPC_64);
584 return EINVAL;
585 }
586 return (kern_semctl(td, args->semid, args->semnum, cmd, &semun,
587 td->td_retval));
588 }
589
590 int
591 linux_msgsnd(struct thread *td, struct linux_msgsnd_args *args)
592 {
593 const void *msgp;
594 long mtype;
595 l_long lmtype;
596 int error;
597
598 if ((l_long)args->msgsz < 0 || args->msgsz > (l_long)msginfo.msgmax)
599 return (EINVAL);
600 msgp = PTRIN(args->msgp);
601 if ((error = copyin(msgp, &lmtype, sizeof(lmtype))) != 0)
602 return (error);
603 mtype = (long)lmtype;
604 return (kern_msgsnd(td, args->msqid,
605 (const char *)msgp + sizeof(lmtype),
606 args->msgsz, args->msgflg, mtype));
607 }
608
609 int
610 linux_msgrcv(struct thread *td, struct linux_msgrcv_args *args)
611 {
612 void *msgp;
613 long mtype;
614 l_long lmtype;
615 int error;
616
617 if ((l_long)args->msgsz < 0 || args->msgsz > (l_long)msginfo.msgmax)
618 return (EINVAL);
619 msgp = PTRIN(args->msgp);
620 if ((error = kern_msgrcv(td, args->msqid,
621 (char *)msgp + sizeof(lmtype), args->msgsz,
622 args->msgtyp, args->msgflg, &mtype)) != 0)
623 return (error);
624 lmtype = (l_long)mtype;
625 return (copyout(&lmtype, msgp, sizeof(lmtype)));
626 }
627
628 int
629 linux_msgget(struct thread *td, struct linux_msgget_args *args)
630 {
631 struct msgget_args /* {
632 key_t key;
633 int msgflg;
634 } */ bsd_args;
635
636 bsd_args.key = args->key;
637 bsd_args.msgflg = args->msgflg;
638 return msgget(td, &bsd_args);
639 }
640
641 int
642 linux_msgctl(struct thread *td, struct linux_msgctl_args *args)
643 {
644 int error, bsd_cmd;
645 struct l_msqid_ds linux_msqid;
646 struct msqid_ds bsd_msqid;
647
648 bsd_cmd = args->cmd & ~LINUX_IPC_64;
649 switch (bsd_cmd) {
650 case LINUX_IPC_INFO:
651 case LINUX_MSG_INFO: {
652 struct l_msginfo linux_msginfo;
653
654 /*
655 * XXX MSG_INFO uses the same data structure but returns different
656 * dynamic counters in msgpool, msgmap, and msgtql fields.
657 */
658 linux_msginfo.msgpool = (long)msginfo.msgmni *
659 (long)msginfo.msgmnb / 1024L; /* XXX MSG_INFO. */
660 linux_msginfo.msgmap = msginfo.msgmnb; /* XXX MSG_INFO. */
661 linux_msginfo.msgmax = msginfo.msgmax;
662 linux_msginfo.msgmnb = msginfo.msgmnb;
663 linux_msginfo.msgmni = msginfo.msgmni;
664 linux_msginfo.msgssz = msginfo.msgssz;
665 linux_msginfo.msgtql = msginfo.msgtql; /* XXX MSG_INFO. */
666 linux_msginfo.msgseg = msginfo.msgseg;
667 error = copyout(&linux_msginfo, PTRIN(args->buf),
668 sizeof(linux_msginfo));
669 if (error == 0)
670 td->td_retval[0] = msginfo.msgmni; /* XXX */
671
672 return (error);
673 }
674
675 /*
676 * TODO: implement this
677 * case LINUX_MSG_STAT:
678 */
679 case LINUX_IPC_STAT:
680 /* NOTHING */
681 break;
682
683 case LINUX_IPC_SET:
684 error = linux_msqid_pullup(args->cmd & LINUX_IPC_64,
685 &linux_msqid, PTRIN(args->buf));
686 if (error)
687 return (error);
688 linux_to_bsd_msqid_ds(&linux_msqid, &bsd_msqid);
689 break;
690
691 case LINUX_IPC_RMID:
692 /* NOTHING */
693 break;
694
695 default:
696 return (EINVAL);
697 break;
698 }
699
700 error = kern_msgctl(td, args->msqid, bsd_cmd, &bsd_msqid);
701 if (error != 0)
702 if (bsd_cmd != LINUX_IPC_RMID || error != EINVAL)
703 return (error);
704
705 if (bsd_cmd == LINUX_IPC_STAT) {
706 bsd_to_linux_msqid_ds(&bsd_msqid, &linux_msqid);
707 return (linux_msqid_pushdown(args->cmd & LINUX_IPC_64,
708 &linux_msqid, PTRIN(args->buf)));
709 }
710
711 return (0);
712 }
713
714 int
715 linux_shmat(struct thread *td, struct linux_shmat_args *args)
716 {
717 struct shmat_args /* {
718 int shmid;
719 void *shmaddr;
720 int shmflg;
721 } */ bsd_args;
722 int error;
723 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
724 l_uintptr_t addr;
725 #endif
726
727 bsd_args.shmid = args->shmid;
728 bsd_args.shmaddr = PTRIN(args->shmaddr);
729 bsd_args.shmflg = args->shmflg;
730 if ((error = shmat(td, &bsd_args)))
731 return error;
732 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
733 addr = td->td_retval[0];
734 if ((error = copyout(&addr, PTRIN(args->raddr), sizeof(addr))))
735 return error;
736 td->td_retval[0] = 0;
737 #endif
738 return 0;
739 }
740
741 int
742 linux_shmdt(struct thread *td, struct linux_shmdt_args *args)
743 {
744 struct shmdt_args /* {
745 void *shmaddr;
746 } */ bsd_args;
747
748 bsd_args.shmaddr = PTRIN(args->shmaddr);
749 return shmdt(td, &bsd_args);
750 }
751
752 int
753 linux_shmget(struct thread *td, struct linux_shmget_args *args)
754 {
755 struct shmget_args /* {
756 key_t key;
757 int size;
758 int shmflg;
759 } */ bsd_args;
760
761 bsd_args.key = args->key;
762 bsd_args.size = args->size;
763 bsd_args.shmflg = args->shmflg;
764 return shmget(td, &bsd_args);
765 }
766
767 int
768 linux_shmctl(struct thread *td, struct linux_shmctl_args *args)
769 {
770 struct l_shmid_ds linux_shmid;
771 struct l_shminfo linux_shminfo;
772 struct l_shm_info linux_shm_info;
773 struct shmid_ds bsd_shmid;
774 int error;
775
776 switch (args->cmd & ~LINUX_IPC_64) {
777
778 case LINUX_IPC_INFO: {
779 struct shminfo bsd_shminfo;
780
781 /* Perform shmctl wanting removed segments lookup */
782 error = kern_shmctl(td, args->shmid, IPC_INFO,
783 (void *)&bsd_shminfo, NULL);
784 if (error)
785 return error;
786
787 bsd_to_linux_shminfo(&bsd_shminfo, &linux_shminfo);
788
789 return (linux_shminfo_pushdown(args->cmd & LINUX_IPC_64,
790 &linux_shminfo, PTRIN(args->buf)));
791 }
792
793 case LINUX_SHM_INFO: {
794 struct shm_info bsd_shm_info;
795
796 /* Perform shmctl wanting removed segments lookup */
797 error = kern_shmctl(td, args->shmid, SHM_INFO,
798 (void *)&bsd_shm_info, NULL);
799 if (error)
800 return error;
801
802 bsd_to_linux_shm_info(&bsd_shm_info, &linux_shm_info);
803
804 return copyout(&linux_shm_info, PTRIN(args->buf),
805 sizeof(struct l_shm_info));
806 }
807
808 case LINUX_IPC_STAT:
809 /* Perform shmctl wanting removed segments lookup */
810 error = kern_shmctl(td, args->shmid, IPC_STAT,
811 (void *)&bsd_shmid, NULL);
812 if (error)
813 return error;
814
815 bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid);
816
817 return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64,
818 &linux_shmid, PTRIN(args->buf)));
819
820 case LINUX_SHM_STAT:
821 /* Perform shmctl wanting removed segments lookup */
822 error = kern_shmctl(td, args->shmid, IPC_STAT,
823 (void *)&bsd_shmid, NULL);
824 if (error)
825 return error;
826
827 bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid);
828
829 return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64,
830 &linux_shmid, PTRIN(args->buf)));
831
832 case LINUX_IPC_SET:
833 error = linux_shmid_pullup(args->cmd & LINUX_IPC_64,
834 &linux_shmid, PTRIN(args->buf));
835 if (error)
836 return error;
837
838 linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
839
840 /* Perform shmctl wanting removed segments lookup */
841 return kern_shmctl(td, args->shmid, IPC_SET,
842 (void *)&bsd_shmid, NULL);
843
844 case LINUX_IPC_RMID: {
845 void *buf;
846
847 if (args->buf == 0)
848 buf = NULL;
849 else {
850 error = linux_shmid_pullup(args->cmd & LINUX_IPC_64,
851 &linux_shmid, PTRIN(args->buf));
852 if (error)
853 return error;
854 linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
855 buf = (void *)&bsd_shmid;
856 }
857 return kern_shmctl(td, args->shmid, IPC_RMID, buf, NULL);
858 }
859
860 case LINUX_SHM_LOCK:
861 case LINUX_SHM_UNLOCK:
862 default:
863 linux_msg(td, "ipc typ=%d not implemented", args->cmd & ~LINUX_IPC_64);
864 return EINVAL;
865 }
866 }
867
868 MODULE_DEPEND(linux, sysvmsg, 1, 1, 1);
869 MODULE_DEPEND(linux, sysvsem, 1, 1, 1);
870 MODULE_DEPEND(linux, sysvshm, 1, 1, 1);
871 Cache object: 77f05bbe5b37fc62da904552c160d74c
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