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/6.0/sys/compat/linux/linux_ipc.c 141691 2005-02-11 13:46:55Z sobomax $");
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 = (struct sembuf *)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 __semctl_args /* {
495 int semid;
496 int semnum;
497 int cmd;
498 union semun *arg;
499 } */ bsd_args;
500 struct l_seminfo linux_seminfo;
501 int error;
502 union semun *unptr;
503 caddr_t sg;
504
505 sg = stackgap_init();
506
507 /* Make sure the arg parameter can be copied in. */
508 unptr = stackgap_alloc(&sg, sizeof(union semun));
509 bcopy(&args->arg, unptr, sizeof(union semun));
510
511 bsd_args.semid = args->semid;
512 bsd_args.semnum = args->semnum;
513 bsd_args.arg = unptr;
514
515 switch (args->cmd & ~LINUX_IPC_64) {
516 case LINUX_IPC_RMID:
517 bsd_args.cmd = IPC_RMID;
518 break;
519 case LINUX_GETNCNT:
520 bsd_args.cmd = GETNCNT;
521 break;
522 case LINUX_GETPID:
523 bsd_args.cmd = GETPID;
524 break;
525 case LINUX_GETVAL:
526 bsd_args.cmd = GETVAL;
527 break;
528 case LINUX_GETZCNT:
529 bsd_args.cmd = GETZCNT;
530 break;
531 case LINUX_SETVAL:
532 bsd_args.cmd = SETVAL;
533 break;
534 case LINUX_IPC_SET:
535 bsd_args.cmd = IPC_SET;
536 error = linux_semid_pullup(args->cmd & LINUX_IPC_64,
537 &linux_semid, (caddr_t)PTRIN(args->arg.buf));
538 if (error)
539 return (error);
540 unptr->buf = stackgap_alloc(&sg, sizeof(struct semid_ds));
541 linux_to_bsd_semid_ds(&linux_semid, unptr->buf);
542 return __semctl(td, &bsd_args);
543 case LINUX_IPC_STAT:
544 case LINUX_SEM_STAT:
545 if((args->cmd & ~LINUX_IPC_64) == LINUX_IPC_STAT)
546 bsd_args.cmd = IPC_STAT;
547 else
548 bsd_args.cmd = SEM_STAT;
549 unptr->buf = stackgap_alloc(&sg, sizeof(struct semid_ds));
550 error = __semctl(td, &bsd_args);
551 if (error)
552 return error;
553 td->td_retval[0] = (bsd_args.cmd == SEM_STAT) ?
554 IXSEQ_TO_IPCID(bsd_args.semid, unptr->buf->sem_perm) :
555 0;
556 bsd_to_linux_semid_ds(unptr->buf, &linux_semid);
557 return (linux_semid_pushdown(args->cmd & LINUX_IPC_64,
558 &linux_semid, (caddr_t)PTRIN(args->arg.buf)));
559 case LINUX_IPC_INFO:
560 case LINUX_SEM_INFO:
561 bcopy(&seminfo, &linux_seminfo, sizeof(linux_seminfo) );
562 /* XXX BSD equivalent?
563 #define used_semids 10
564 #define used_sems 10
565 linux_seminfo.semusz = used_semids;
566 linux_seminfo.semaem = used_sems;
567 */
568 error = copyout(&linux_seminfo,
569 PTRIN(args->arg.buf), sizeof(linux_seminfo));
570 if (error)
571 return error;
572 td->td_retval[0] = seminfo.semmni;
573 return 0; /* No need for __semctl call */
574 case LINUX_GETALL:
575 /* FALLTHROUGH */
576 case LINUX_SETALL:
577 /* FALLTHROUGH */
578 default:
579 linux_msg(td, "ipc type %d is not implemented",
580 args->cmd & ~LINUX_IPC_64);
581 return EINVAL;
582 }
583 return __semctl(td, &bsd_args);
584 }
585
586 int
587 linux_msgsnd(struct thread *td, struct linux_msgsnd_args *args)
588 {
589 struct msgsnd_args /* {
590 int msqid;
591 void *msgp;
592 size_t msgsz;
593 int msgflg;
594 } */ bsd_args;
595
596 bsd_args.msqid = args->msqid;
597 bsd_args.msgp = PTRIN(args->msgp);
598 bsd_args.msgsz = args->msgsz;
599 bsd_args.msgflg = args->msgflg;
600 return msgsnd(td, &bsd_args);
601 }
602
603 int
604 linux_msgrcv(struct thread *td, struct linux_msgrcv_args *args)
605 {
606 struct msgrcv_args /* {
607 int msqid;
608 void *msgp;
609 size_t msgsz;
610 long msgtyp;
611 int msgflg;
612 } */ bsd_args;
613
614 bsd_args.msqid = args->msqid;
615 bsd_args.msgp = PTRIN(args->msgp);
616 bsd_args.msgsz = args->msgsz;
617 bsd_args.msgtyp = args->msgtyp;
618 bsd_args.msgflg = args->msgflg;
619 return msgrcv(td, &bsd_args);
620 }
621
622 int
623 linux_msgget(struct thread *td, struct linux_msgget_args *args)
624 {
625 struct msgget_args /* {
626 key_t key;
627 int msgflg;
628 } */ bsd_args;
629
630 bsd_args.key = args->key;
631 bsd_args.msgflg = args->msgflg;
632 return msgget(td, &bsd_args);
633 }
634
635 int
636 linux_msgctl(struct thread *td, struct linux_msgctl_args *args)
637 {
638 int error, bsd_cmd;
639 struct l_msqid_ds linux_msqid;
640 struct msqid_ds bsd_msqid;
641
642 error = linux_msqid_pullup(args->cmd & LINUX_IPC_64,
643 &linux_msqid, (caddr_t)PTRIN(args->buf));
644 if (error != 0)
645 return (error);
646 bsd_cmd = args->cmd & ~LINUX_IPC_64;
647 if (bsd_cmd == LINUX_IPC_SET)
648 linux_to_bsd_msqid_ds(&linux_msqid, &bsd_msqid);
649
650 error = kern_msgctl(td, args->msqid, bsd_cmd, &bsd_msqid);
651 if (error != 0)
652 if (bsd_cmd != LINUX_IPC_RMID || error != EINVAL)
653 return (error);
654
655 if (bsd_cmd == LINUX_IPC_STAT) {
656 bsd_to_linux_msqid_ds(&bsd_msqid, &linux_msqid);
657 return (linux_msqid_pushdown(args->cmd & LINUX_IPC_64,
658 &linux_msqid, (caddr_t)PTRIN(args->buf)));
659 }
660
661 return (0);
662 }
663
664 int
665 linux_shmat(struct thread *td, struct linux_shmat_args *args)
666 {
667 struct shmat_args /* {
668 int shmid;
669 void *shmaddr;
670 int shmflg;
671 } */ bsd_args;
672 int error;
673 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
674 l_uintptr_t addr;
675 #endif
676
677 bsd_args.shmid = args->shmid;
678 bsd_args.shmaddr = PTRIN(args->shmaddr);
679 bsd_args.shmflg = args->shmflg;
680 if ((error = shmat(td, &bsd_args)))
681 return error;
682 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
683 addr = td->td_retval[0];
684 if ((error = copyout(&addr, PTRIN(args->raddr), sizeof(addr))))
685 return error;
686 td->td_retval[0] = 0;
687 #endif
688 return 0;
689 }
690
691 int
692 linux_shmdt(struct thread *td, struct linux_shmdt_args *args)
693 {
694 struct shmdt_args /* {
695 void *shmaddr;
696 } */ bsd_args;
697
698 bsd_args.shmaddr = PTRIN(args->shmaddr);
699 return shmdt(td, &bsd_args);
700 }
701
702 int
703 linux_shmget(struct thread *td, struct linux_shmget_args *args)
704 {
705 struct shmget_args /* {
706 key_t key;
707 int size;
708 int shmflg;
709 } */ bsd_args;
710
711 bsd_args.key = args->key;
712 bsd_args.size = args->size;
713 bsd_args.shmflg = args->shmflg;
714 return shmget(td, &bsd_args);
715 }
716
717 int
718 linux_shmctl(struct thread *td, struct linux_shmctl_args *args)
719 {
720 struct l_shmid_ds linux_shmid;
721 struct l_shminfo linux_shminfo;
722 struct l_shm_info linux_shm_info;
723 struct shmid_ds bsd_shmid;
724 size_t bufsz;
725 int error;
726
727 switch (args->cmd & ~LINUX_IPC_64) {
728
729 case LINUX_IPC_INFO: {
730 struct shminfo bsd_shminfo;
731
732 /* Perform shmctl wanting removed segments lookup */
733 error = kern_shmctl(td, args->shmid, IPC_INFO,
734 (void *)&bsd_shminfo, &bufsz);
735 if (error)
736 return error;
737
738 bsd_to_linux_shminfo(&bsd_shminfo, &linux_shminfo);
739
740 return (linux_shminfo_pushdown(args->cmd & LINUX_IPC_64,
741 &linux_shminfo, (caddr_t)PTRIN(args->buf)));
742 }
743
744 case LINUX_SHM_INFO: {
745 struct shm_info bsd_shm_info;
746
747 /* Perform shmctl wanting removed segments lookup */
748 error = kern_shmctl(td, args->shmid, SHM_INFO,
749 (void *)&bsd_shm_info, &bufsz);
750 if (error)
751 return error;
752
753 bsd_to_linux_shm_info(&bsd_shm_info, &linux_shm_info);
754
755 return copyout(&linux_shm_info, (caddr_t)PTRIN(args->buf),
756 sizeof(struct l_shm_info));
757 }
758
759 case LINUX_IPC_STAT:
760 /* Perform shmctl wanting removed segments lookup */
761 error = kern_shmctl(td, args->shmid, IPC_STAT,
762 (void *)&bsd_shmid, &bufsz);
763 if (error)
764 return error;
765
766 bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid);
767
768 return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64,
769 &linux_shmid, (caddr_t)PTRIN(args->buf)));
770
771 case LINUX_SHM_STAT:
772 /* Perform shmctl wanting removed segments lookup */
773 error = kern_shmctl(td, args->shmid, IPC_STAT,
774 (void *)&bsd_shmid, &bufsz);
775 if (error)
776 return error;
777
778 bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid);
779
780 return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64,
781 &linux_shmid, (caddr_t)PTRIN(args->buf)));
782
783 case LINUX_IPC_SET:
784 error = linux_shmid_pullup(args->cmd & LINUX_IPC_64,
785 &linux_shmid, (caddr_t)PTRIN(args->buf));
786 if (error)
787 return error;
788
789 linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
790
791 /* Perform shmctl wanting removed segments lookup */
792 return kern_shmctl(td, args->shmid, IPC_SET,
793 (void *)&bsd_shmid, &bufsz);
794
795 case LINUX_IPC_RMID: {
796 void *buf;
797
798 if (args->buf == 0)
799 buf = NULL;
800 else {
801 error = linux_shmid_pullup(args->cmd & LINUX_IPC_64,
802 &linux_shmid, (caddr_t)PTRIN(args->buf));
803 if (error)
804 return error;
805 linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
806 buf = (void *)&bsd_shmid;
807 }
808 return kern_shmctl(td, args->shmid, IPC_RMID, buf, &bufsz);
809 }
810
811 case LINUX_SHM_LOCK:
812 case LINUX_SHM_UNLOCK:
813 default:
814 linux_msg(td, "ipc typ=%d not implemented", args->cmd & ~LINUX_IPC_64);
815 return EINVAL;
816 }
817 }
Cache object: d1bb2b88be41feef895074008bbc8d54
|