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: releng/5.2/sys/compat/linux/linux_ipc.c 122088 2003-11-05 01:53:10Z fjoe $");
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 <machine/../linux/linux.h>
43 #include <machine/../linux/linux_proto.h>
44 #include <machine/../linux/linux_ipc64.h>
45 #include <compat/linux/linux_ipc.h>
46 #include <compat/linux/linux_util.h>
47
48 struct l_seminfo {
49 l_int semmap;
50 l_int semmni;
51 l_int semmns;
52 l_int semmnu;
53 l_int semmsl;
54 l_int semopm;
55 l_int semume;
56 l_int semusz;
57 l_int semvmx;
58 l_int semaem;
59 };
60
61 struct l_shminfo {
62 l_int shmmax;
63 l_int shmmin;
64 l_int shmmni;
65 l_int shmseg;
66 l_int shmall;
67 };
68
69 struct l_shm_info {
70 l_int used_ids;
71 l_ulong shm_tot; /* total allocated shm */
72 l_ulong shm_rss; /* total resident shm */
73 l_ulong shm_swp; /* total swapped shm */
74 l_ulong swap_attempts;
75 l_ulong swap_successes;
76 };
77
78 static void
79 bsd_to_linux_shminfo( struct shminfo *bpp, struct l_shminfo *lpp)
80 {
81 lpp->shmmax = bpp->shmmax;
82 lpp->shmmin = bpp->shmmin;
83 lpp->shmmni = bpp->shmmni;
84 lpp->shmseg = bpp->shmseg;
85 lpp->shmall = bpp->shmall;
86 }
87
88 static void
89 bsd_to_linux_shm_info( struct shm_info *bpp, struct l_shm_info *lpp)
90 {
91 lpp->used_ids = bpp->used_ids ;
92 lpp->shm_tot = bpp->shm_tot ;
93 lpp->shm_rss = bpp->shm_rss ;
94 lpp->shm_swp = bpp->shm_swp ;
95 lpp->swap_attempts = bpp->swap_attempts ;
96 lpp->swap_successes = bpp->swap_successes ;
97 }
98
99 struct l_ipc_perm {
100 l_key_t key;
101 l_uid16_t uid;
102 l_gid16_t gid;
103 l_uid16_t cuid;
104 l_gid16_t cgid;
105 l_ushort mode;
106 l_ushort seq;
107 };
108
109 static void
110 linux_to_bsd_ipc_perm(struct l_ipc_perm *lpp, struct ipc_perm *bpp)
111 {
112 bpp->key = lpp->key;
113 bpp->uid = lpp->uid;
114 bpp->gid = lpp->gid;
115 bpp->cuid = lpp->cuid;
116 bpp->cgid = lpp->cgid;
117 bpp->mode = lpp->mode;
118 bpp->seq = lpp->seq;
119 }
120
121
122 static void
123 bsd_to_linux_ipc_perm(struct ipc_perm *bpp, struct l_ipc_perm *lpp)
124 {
125 lpp->key = bpp->key;
126 lpp->uid = bpp->uid;
127 lpp->gid = bpp->gid;
128 lpp->cuid = bpp->cuid;
129 lpp->cgid = bpp->cgid;
130 lpp->mode = bpp->mode;
131 lpp->seq = bpp->seq;
132 }
133
134 struct l_msqid_ds {
135 struct l_ipc_perm msg_perm;
136 struct l_msg *msg_first; /* first message on queue,unused */
137 struct l_msg *msg_last; /* last message in queue,unused */
138 l_time_t msg_stime; /* last msgsnd time */
139 l_time_t msg_rtime; /* last msgrcv time */
140 l_time_t msg_ctime; /* last change time */
141 l_ulong msg_lcbytes; /* Reuse junk fields for 32 bit */
142 l_ulong msg_lqbytes; /* ditto */
143 l_ushort msg_cbytes; /* current number of bytes on queue */
144 l_ushort msg_qnum; /* number of messages in queue */
145 l_ushort msg_qbytes; /* max number of bytes on queue */
146 l_pid_t msg_lspid; /* pid of last msgsnd */
147 l_pid_t msg_lrpid; /* last receive pid */
148 };
149
150 struct l_semid_ds {
151 struct l_ipc_perm sem_perm;
152 l_time_t sem_otime;
153 l_time_t sem_ctime;
154 void *sem_base;
155 void *sem_pending;
156 void *sem_pending_last;
157 void *undo;
158 l_ushort sem_nsems;
159 };
160
161 struct l_shmid_ds {
162 struct l_ipc_perm shm_perm;
163 l_int shm_segsz;
164 l_time_t shm_atime;
165 l_time_t shm_dtime;
166 l_time_t shm_ctime;
167 l_ushort shm_cpid;
168 l_ushort shm_lpid;
169 l_short shm_nattch;
170 l_ushort private1;
171 void *private2;
172 void *private3;
173 };
174
175 static void
176 linux_to_bsd_semid_ds(struct l_semid_ds *lsp, struct semid_ds *bsp)
177 {
178 linux_to_bsd_ipc_perm(&lsp->sem_perm, &bsp->sem_perm);
179 bsp->sem_otime = lsp->sem_otime;
180 bsp->sem_ctime = lsp->sem_ctime;
181 bsp->sem_nsems = lsp->sem_nsems;
182 bsp->sem_base = lsp->sem_base;
183 }
184
185 static void
186 bsd_to_linux_semid_ds(struct semid_ds *bsp, struct l_semid_ds *lsp)
187 {
188 bsd_to_linux_ipc_perm(&bsp->sem_perm, &lsp->sem_perm);
189 lsp->sem_otime = bsp->sem_otime;
190 lsp->sem_ctime = bsp->sem_ctime;
191 lsp->sem_nsems = bsp->sem_nsems;
192 lsp->sem_base = bsp->sem_base;
193 }
194
195 static void
196 linux_to_bsd_shmid_ds(struct l_shmid_ds *lsp, struct shmid_ds *bsp)
197 {
198 linux_to_bsd_ipc_perm(&lsp->shm_perm, &bsp->shm_perm);
199 bsp->shm_segsz = lsp->shm_segsz;
200 bsp->shm_lpid = lsp->shm_lpid;
201 bsp->shm_cpid = lsp->shm_cpid;
202 bsp->shm_nattch = lsp->shm_nattch;
203 bsp->shm_atime = lsp->shm_atime;
204 bsp->shm_dtime = lsp->shm_dtime;
205 bsp->shm_ctime = lsp->shm_ctime;
206 bsp->shm_internal = lsp->private3; /* this goes (yet) SOS */
207 }
208
209 static void
210 bsd_to_linux_shmid_ds(struct shmid_ds *bsp, struct l_shmid_ds *lsp)
211 {
212 bsd_to_linux_ipc_perm(&bsp->shm_perm, &lsp->shm_perm);
213 lsp->shm_segsz = bsp->shm_segsz;
214 lsp->shm_lpid = bsp->shm_lpid;
215 lsp->shm_cpid = bsp->shm_cpid;
216 lsp->shm_nattch = bsp->shm_nattch;
217 lsp->shm_atime = bsp->shm_atime;
218 lsp->shm_dtime = bsp->shm_dtime;
219 lsp->shm_ctime = bsp->shm_ctime;
220 lsp->private3 = bsp->shm_internal; /* this goes (yet) SOS */
221 }
222
223 static void
224 linux_to_bsd_msqid_ds(struct l_msqid_ds *lsp, struct msqid_ds *bsp)
225 {
226 linux_to_bsd_ipc_perm(&lsp->msg_perm, &bsp->msg_perm);
227 bsp->msg_cbytes = lsp->msg_cbytes;
228 bsp->msg_qnum = lsp->msg_qnum;
229 bsp->msg_qbytes = lsp->msg_qbytes;
230 bsp->msg_lspid = lsp->msg_lspid;
231 bsp->msg_lrpid = lsp->msg_lrpid;
232 bsp->msg_stime = lsp->msg_stime;
233 bsp->msg_rtime = lsp->msg_rtime;
234 bsp->msg_ctime = lsp->msg_ctime;
235 }
236
237 static void
238 bsd_to_linux_msqid_ds(struct msqid_ds *bsp, struct l_msqid_ds *lsp)
239 {
240 bsd_to_linux_ipc_perm(&bsp->msg_perm, &lsp->msg_perm);
241 lsp->msg_cbytes = bsp->msg_cbytes;
242 lsp->msg_qnum = bsp->msg_qnum;
243 lsp->msg_qbytes = bsp->msg_qbytes;
244 lsp->msg_lspid = bsp->msg_lspid;
245 lsp->msg_lrpid = bsp->msg_lrpid;
246 lsp->msg_stime = bsp->msg_stime;
247 lsp->msg_rtime = bsp->msg_rtime;
248 lsp->msg_ctime = bsp->msg_ctime;
249 }
250
251 static void
252 linux_ipc_perm_to_ipc64_perm(struct l_ipc_perm *in, struct l_ipc64_perm *out)
253 {
254
255 /* XXX: do we really need to do something here? */
256 out->key = in->key;
257 out->uid = in->uid;
258 out->gid = in->gid;
259 out->cuid = in->cuid;
260 out->cgid = in->cgid;
261 out->mode = in->mode;
262 out->seq = in->seq;
263 }
264
265 static int
266 linux_msqid_pullup(l_int ver, struct l_msqid_ds *linux_msqid, caddr_t uaddr)
267 {
268 struct l_msqid64_ds linux_msqid64;
269 int error;
270
271 if (ver == LINUX_IPC_64) {
272 error = copyin(uaddr, &linux_msqid64, sizeof(linux_msqid64));
273 if (error != 0)
274 return (error);
275
276 bzero(linux_msqid, sizeof(*linux_msqid));
277
278 linux_msqid->msg_perm.uid = linux_msqid64.msg_perm.uid;
279 linux_msqid->msg_perm.gid = linux_msqid64.msg_perm.gid;
280 linux_msqid->msg_perm.mode = linux_msqid64.msg_perm.mode;
281
282 if (linux_msqid64.msg_qbytes > USHRT_MAX)
283 linux_msqid->msg_lqbytes = linux_msqid64.msg_qbytes;
284 else
285 linux_msqid->msg_qbytes = linux_msqid64.msg_qbytes;
286 } else {
287 error = copyin(uaddr, linux_msqid, sizeof(*linux_msqid));
288 }
289 return (error);
290 }
291
292 static int
293 linux_msqid_pushdown(l_int ver, struct l_msqid_ds *linux_msqid, caddr_t uaddr)
294 {
295 struct l_msqid64_ds linux_msqid64;
296
297 if (ver == LINUX_IPC_64) {
298 bzero(&linux_msqid64, sizeof(linux_msqid64));
299
300 linux_ipc_perm_to_ipc64_perm(&linux_msqid->msg_perm,
301 &linux_msqid64.msg_perm);
302
303 linux_msqid64.msg_stime = linux_msqid->msg_stime;
304 linux_msqid64.msg_rtime = linux_msqid->msg_rtime;
305 linux_msqid64.msg_ctime = linux_msqid->msg_ctime;
306
307 if (linux_msqid->msg_cbytes == 0)
308 linux_msqid64.msg_cbytes = linux_msqid->msg_lcbytes;
309 else
310 linux_msqid64.msg_cbytes = linux_msqid->msg_cbytes;
311
312 linux_msqid64.msg_qnum = linux_msqid->msg_qnum;
313
314 if (linux_msqid->msg_qbytes == 0)
315 linux_msqid64.msg_qbytes = linux_msqid->msg_lqbytes;
316 else
317 linux_msqid64.msg_qbytes = linux_msqid->msg_qbytes;
318
319 linux_msqid64.msg_lspid = linux_msqid->msg_lspid;
320 linux_msqid64.msg_lrpid = linux_msqid->msg_lrpid;
321
322 return (copyout(&linux_msqid64, uaddr, sizeof(linux_msqid64)));
323 } else {
324 return (copyout(linux_msqid, uaddr, sizeof(*linux_msqid)));
325 }
326 }
327
328 static int
329 linux_semid_pullup(l_int ver, struct l_semid_ds *linux_semid, caddr_t uaddr)
330 {
331 struct l_semid64_ds linux_semid64;
332 int error;
333
334 if (ver == LINUX_IPC_64) {
335 error = copyin(uaddr, &linux_semid64, sizeof(linux_semid64));
336 if (error != 0)
337 return (error);
338
339 bzero(linux_semid, sizeof(*linux_semid));
340
341 linux_semid->sem_perm.uid = linux_semid64.sem_perm.uid;
342 linux_semid->sem_perm.gid = linux_semid64.sem_perm.gid;
343 linux_semid->sem_perm.mode = linux_semid64.sem_perm.mode;
344 } else {
345 error = copyin(uaddr, linux_semid, sizeof(*linux_semid));
346 }
347 return (error);
348 }
349
350 static int
351 linux_semid_pushdown(l_int ver, struct l_semid_ds *linux_semid, caddr_t uaddr)
352 {
353 struct l_semid64_ds linux_semid64;
354
355 if (ver == LINUX_IPC_64) {
356 bzero(&linux_semid64, sizeof(linux_semid64));
357
358 linux_ipc_perm_to_ipc64_perm(&linux_semid->sem_perm,
359 &linux_semid64.sem_perm);
360
361 linux_semid64.sem_otime = linux_semid->sem_otime;
362 linux_semid64.sem_ctime = linux_semid->sem_ctime;
363 linux_semid64.sem_nsems = linux_semid->sem_nsems;
364
365 return (copyout(&linux_semid64, uaddr, sizeof(linux_semid64)));
366 } else {
367 return (copyout(linux_semid, uaddr, sizeof(*linux_semid)));
368 }
369 }
370
371 static int
372 linux_shmid_pullup(l_int ver, struct l_shmid_ds *linux_shmid, caddr_t uaddr)
373 {
374 struct l_shmid64_ds linux_shmid64;
375 int error;
376
377 if (ver == LINUX_IPC_64) {
378 error = copyin(uaddr, &linux_shmid64, sizeof(linux_shmid64));
379 if (error != 0)
380 return (error);
381
382 bzero(linux_shmid, sizeof(*linux_shmid));
383
384 linux_shmid->shm_perm.uid = linux_shmid64.shm_perm.uid;
385 linux_shmid->shm_perm.gid = linux_shmid64.shm_perm.gid;
386 linux_shmid->shm_perm.mode = linux_shmid64.shm_perm.mode;
387 } else {
388 error = copyin(uaddr, linux_shmid, sizeof(*linux_shmid));
389 }
390 return (error);
391 }
392
393 static int
394 linux_shmid_pushdown(l_int ver, struct l_shmid_ds *linux_shmid, caddr_t uaddr)
395 {
396 struct l_shmid64_ds linux_shmid64;
397
398 if (ver == LINUX_IPC_64) {
399 bzero(&linux_shmid64, sizeof(linux_shmid64));
400
401 linux_ipc_perm_to_ipc64_perm(&linux_shmid->shm_perm,
402 &linux_shmid64.shm_perm);
403
404 linux_shmid64.shm_segsz = linux_shmid->shm_segsz;
405 linux_shmid64.shm_atime = linux_shmid->shm_atime;
406 linux_shmid64.shm_dtime = linux_shmid->shm_dtime;
407 linux_shmid64.shm_ctime = linux_shmid->shm_ctime;
408 linux_shmid64.shm_cpid = linux_shmid->shm_cpid;
409 linux_shmid64.shm_lpid = linux_shmid->shm_lpid;
410 linux_shmid64.shm_nattch = linux_shmid->shm_nattch;
411
412 return (copyout(&linux_shmid64, uaddr, sizeof(linux_shmid64)));
413 } else {
414 return (copyout(linux_shmid, uaddr, sizeof(*linux_shmid)));
415 }
416 }
417
418 static int
419 linux_shminfo_pushdown(l_int ver, struct l_shminfo *linux_shminfo,
420 caddr_t uaddr)
421 {
422 struct l_shminfo64 linux_shminfo64;
423
424 if (ver == LINUX_IPC_64) {
425 bzero(&linux_shminfo64, sizeof(linux_shminfo64));
426
427 linux_shminfo64.shmmax = linux_shminfo->shmmax;
428 linux_shminfo64.shmmin = linux_shminfo->shmmin;
429 linux_shminfo64.shmmni = linux_shminfo->shmmni;
430 linux_shminfo64.shmseg = linux_shminfo->shmseg;
431 linux_shminfo64.shmall = linux_shminfo->shmall;
432
433 return (copyout(&linux_shminfo64, uaddr,
434 sizeof(linux_shminfo64)));
435 } else {
436 return (copyout(linux_shminfo, uaddr, sizeof(*linux_shminfo)));
437 }
438 }
439
440 int
441 linux_semop(struct thread *td, struct linux_semop_args *args)
442 {
443 struct semop_args /* {
444 int semid;
445 struct sembuf *sops;
446 int nsops;
447 } */ bsd_args;
448
449 bsd_args.semid = args->semid;
450 bsd_args.sops = (struct sembuf *)args->tsops;
451 bsd_args.nsops = args->nsops;
452 return semop(td, &bsd_args);
453 }
454
455 int
456 linux_semget(struct thread *td, struct linux_semget_args *args)
457 {
458 struct semget_args /* {
459 key_t key;
460 int nsems;
461 int semflg;
462 } */ bsd_args;
463
464 if (args->nsems < 0)
465 return (EINVAL);
466 bsd_args.key = args->key;
467 bsd_args.nsems = args->nsems;
468 bsd_args.semflg = args->semflg;
469 return semget(td, &bsd_args);
470 }
471
472 int
473 linux_semctl(struct thread *td, struct linux_semctl_args *args)
474 {
475 struct l_semid_ds linux_semid;
476 struct __semctl_args /* {
477 int semid;
478 int semnum;
479 int cmd;
480 union semun *arg;
481 } */ bsd_args;
482 struct l_seminfo linux_seminfo;
483 int error;
484 union semun *unptr;
485 caddr_t sg;
486
487 sg = stackgap_init();
488
489 /* Make sure the arg parameter can be copied in. */
490 unptr = stackgap_alloc(&sg, sizeof(union semun));
491 bcopy(&args->arg, unptr, sizeof(union semun));
492
493 bsd_args.semid = args->semid;
494 bsd_args.semnum = args->semnum;
495 bsd_args.arg = unptr;
496
497 switch (args->cmd & ~LINUX_IPC_64) {
498 case LINUX_IPC_RMID:
499 bsd_args.cmd = IPC_RMID;
500 break;
501 case LINUX_GETNCNT:
502 bsd_args.cmd = GETNCNT;
503 break;
504 case LINUX_GETPID:
505 bsd_args.cmd = GETPID;
506 break;
507 case LINUX_GETVAL:
508 bsd_args.cmd = GETVAL;
509 break;
510 case LINUX_GETZCNT:
511 bsd_args.cmd = GETZCNT;
512 break;
513 case LINUX_SETVAL:
514 bsd_args.cmd = SETVAL;
515 break;
516 case LINUX_IPC_SET:
517 bsd_args.cmd = IPC_SET;
518 error = linux_semid_pullup(args->cmd & LINUX_IPC_64,
519 &linux_semid, (caddr_t)args->arg.buf);
520 if (error)
521 return (error);
522 unptr->buf = stackgap_alloc(&sg, sizeof(struct semid_ds));
523 linux_to_bsd_semid_ds(&linux_semid, unptr->buf);
524 return __semctl(td, &bsd_args);
525 case LINUX_IPC_STAT:
526 case LINUX_SEM_STAT:
527 if((args->cmd & ~LINUX_IPC_64) == LINUX_IPC_STAT)
528 bsd_args.cmd = IPC_STAT;
529 else
530 bsd_args.cmd = SEM_STAT;
531 unptr->buf = stackgap_alloc(&sg, sizeof(struct semid_ds));
532 error = __semctl(td, &bsd_args);
533 if (error)
534 return error;
535 td->td_retval[0] = IXSEQ_TO_IPCID(bsd_args.semid,
536 unptr->buf->sem_perm);
537 bsd_to_linux_semid_ds(unptr->buf, &linux_semid);
538 return (linux_semid_pushdown(args->cmd & LINUX_IPC_64,
539 &linux_semid, (caddr_t)args->arg.buf));
540 case LINUX_IPC_INFO:
541 case LINUX_SEM_INFO:
542 bcopy(&seminfo, &linux_seminfo, sizeof(linux_seminfo) );
543 /* XXX BSD equivalent?
544 #define used_semids 10
545 #define used_sems 10
546 linux_seminfo.semusz = used_semids;
547 linux_seminfo.semaem = used_sems;
548 */
549 error = copyout(&linux_seminfo, args->arg.buf,
550 sizeof(linux_seminfo));
551 if (error)
552 return error;
553 td->td_retval[0] = seminfo.semmni;
554 return 0; /* No need for __semctl call */
555 case LINUX_GETALL:
556 /* FALLTHROUGH */
557 case LINUX_SETALL:
558 /* FALLTHROUGH */
559 default:
560 linux_msg(td, "ipc type %d is not implemented",
561 args->cmd & ~LINUX_IPC_64);
562 return EINVAL;
563 }
564 return __semctl(td, &bsd_args);
565 }
566
567 int
568 linux_msgsnd(struct thread *td, struct linux_msgsnd_args *args)
569 {
570 struct msgsnd_args /* {
571 int msqid;
572 void *msgp;
573 size_t msgsz;
574 int msgflg;
575 } */ bsd_args;
576
577 bsd_args.msqid = args->msqid;
578 bsd_args.msgp = args->msgp;
579 bsd_args.msgsz = args->msgsz;
580 bsd_args.msgflg = args->msgflg;
581 return msgsnd(td, &bsd_args);
582 }
583
584 int
585 linux_msgrcv(struct thread *td, struct linux_msgrcv_args *args)
586 {
587 struct msgrcv_args /* {
588 int msqid;
589 void *msgp;
590 size_t msgsz;
591 long msgtyp;
592 int msgflg;
593 } */ bsd_args;
594
595 bsd_args.msqid = args->msqid;
596 bsd_args.msgp = args->msgp;
597 bsd_args.msgsz = args->msgsz;
598 bsd_args.msgtyp = args->msgtyp;
599 bsd_args.msgflg = args->msgflg;
600 return msgrcv(td, &bsd_args);
601 }
602
603 int
604 linux_msgget(struct thread *td, struct linux_msgget_args *args)
605 {
606 struct msgget_args /* {
607 key_t key;
608 int msgflg;
609 } */ bsd_args;
610
611 bsd_args.key = args->key;
612 bsd_args.msgflg = args->msgflg;
613 return msgget(td, &bsd_args);
614 }
615
616 int
617 linux_msgctl(struct thread *td, struct linux_msgctl_args *args)
618 {
619 struct msgctl_args /* {
620 int msqid;
621 int cmd;
622 struct msqid_ds *buf;
623 } */ bsd_args;
624 int error;
625 struct l_msqid_ds linux_msqid;
626 caddr_t sg = stackgap_init();
627
628 error = linux_msqid_pullup(args->cmd & LINUX_IPC_64,
629 &linux_msqid, (caddr_t)args->buf);
630 if (error != 0)
631 return (error);
632 bsd_args.buf = (struct msqid_ds*)stackgap_alloc(&sg,
633 sizeof(struct l_msqid_ds));
634 bsd_args.msqid = args->msqid;
635 bsd_args.cmd = args->cmd & ~LINUX_IPC_64;
636 if (bsd_args.cmd == LINUX_IPC_SET)
637 linux_to_bsd_msqid_ds(&linux_msqid, bsd_args.buf);
638
639 error = msgctl(td, &bsd_args);
640 if (error != 0)
641 if (bsd_args.cmd != LINUX_IPC_RMID || error != EINVAL)
642 return (error);
643
644 if (bsd_args.cmd == LINUX_IPC_STAT) {
645 bsd_to_linux_msqid_ds(bsd_args.buf, &linux_msqid);
646 return (linux_msqid_pushdown(args->cmd & LINUX_IPC_64,
647 &linux_msqid, (caddr_t)args->buf));
648 }
649
650 return (0);
651 }
652
653 int
654 linux_shmat(struct thread *td, struct linux_shmat_args *args)
655 {
656 struct shmat_args /* {
657 int shmid;
658 void *shmaddr;
659 int shmflg;
660 } */ bsd_args;
661 int error;
662
663 bsd_args.shmid = args->shmid;
664 bsd_args.shmaddr = args->shmaddr;
665 bsd_args.shmflg = args->shmflg;
666 if ((error = shmat(td, &bsd_args)))
667 return error;
668 #ifdef __i386__
669 if ((error = copyout(td->td_retval, args->raddr, sizeof(l_ulong))))
670 return error;
671 td->td_retval[0] = 0;
672 #endif
673 return 0;
674 }
675
676 int
677 linux_shmdt(struct thread *td, struct linux_shmdt_args *args)
678 {
679 struct shmdt_args /* {
680 void *shmaddr;
681 } */ bsd_args;
682
683 bsd_args.shmaddr = args->shmaddr;
684 return shmdt(td, &bsd_args);
685 }
686
687 int
688 linux_shmget(struct thread *td, struct linux_shmget_args *args)
689 {
690 struct shmget_args /* {
691 key_t key;
692 int size;
693 int shmflg;
694 } */ bsd_args;
695
696 bsd_args.key = args->key;
697 bsd_args.size = args->size;
698 bsd_args.shmflg = args->shmflg;
699 return shmget(td, &bsd_args);
700 }
701
702 int
703 linux_shmctl(struct thread *td, struct linux_shmctl_args *args)
704 {
705 struct l_shmid_ds linux_shmid;
706 struct l_shminfo linux_shminfo;
707 struct l_shm_info linux_shm_info;
708 struct shmid_ds bsd_shmid;
709 size_t bufsz;
710 int error;
711
712 switch (args->cmd & ~LINUX_IPC_64) {
713
714 case LINUX_IPC_INFO: {
715 struct shminfo bsd_shminfo;
716
717 /* Perform shmctl wanting removed segments lookup */
718 error = kern_shmctl(td, args->shmid, IPC_INFO,
719 (void *)&bsd_shminfo, &bufsz);
720 if (error)
721 return error;
722
723 bsd_to_linux_shminfo(&bsd_shminfo, &linux_shminfo);
724
725 return (linux_shminfo_pushdown(args->cmd & LINUX_IPC_64,
726 &linux_shminfo, (caddr_t)args->buf));
727 }
728
729 case LINUX_SHM_INFO: {
730 struct shm_info bsd_shm_info;
731
732 /* Perform shmctl wanting removed segments lookup */
733 error = kern_shmctl(td, args->shmid, SHM_INFO,
734 (void *)&bsd_shm_info, &bufsz);
735 if (error)
736 return error;
737
738 bsd_to_linux_shm_info(&bsd_shm_info, &linux_shm_info);
739
740 return copyout(&linux_shm_info, (caddr_t)args->buf,
741 sizeof(struct l_shm_info));
742 }
743
744 case LINUX_IPC_STAT:
745 /* Perform shmctl wanting removed segments lookup */
746 error = kern_shmctl(td, args->shmid, IPC_STAT,
747 (void *)&bsd_shmid, &bufsz);
748 if (error)
749 return error;
750
751 bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid);
752
753 return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64,
754 &linux_shmid, (caddr_t)args->buf));
755
756 case LINUX_SHM_STAT:
757 /* Perform shmctl wanting removed segments lookup */
758 error = kern_shmctl(td, args->shmid, IPC_STAT,
759 (void *)&bsd_shmid, &bufsz);
760 if (error)
761 return error;
762
763 bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid);
764
765 return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64,
766 &linux_shmid, (caddr_t)args->buf));
767
768 case LINUX_IPC_SET:
769 error = linux_shmid_pullup(args->cmd & LINUX_IPC_64,
770 &linux_shmid, (caddr_t)args->buf);
771 if (error)
772 return error;
773
774 linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
775
776 /* Perform shmctl wanting removed segments lookup */
777 return kern_shmctl(td, args->shmid, IPC_SET,
778 (void *)&bsd_shmid, &bufsz);
779
780 case LINUX_IPC_RMID: {
781 void *buf;
782
783 if (args->buf == NULL)
784 buf = NULL;
785 else {
786 error = linux_shmid_pullup(args->cmd & LINUX_IPC_64,
787 &linux_shmid, (caddr_t)args->buf);
788 if (error)
789 return error;
790 linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
791 buf = (void *)&bsd_shmid;
792 }
793 return kern_shmctl(td, args->shmid, IPC_RMID, buf, &bufsz);
794 }
795
796 case LINUX_SHM_LOCK:
797 case LINUX_SHM_UNLOCK:
798 default:
799 linux_msg(td, "ipc typ=%d not implemented", args->cmd & ~LINUX_IPC_64);
800 return EINVAL;
801 }
802 }
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