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
56struct 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
69struct l_shminfo {
70 l_int shmmax;
71 l_int shmmin;
72 l_int shmmni;
73 l_int shmseg;
74 l_int shmall;
75};
76
77struct 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
86struct 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
97static void
98bsd_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
107static void
108bsd_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
118struct 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
128static void
129linux_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
141static void
142bsd_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
153struct 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
173struct 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
188struct 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
202static void
203linux_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
212static void
213bsd_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
222static void
223linux_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}
234
235static void
236bsd_to_linux_shmid_ds(struct shmid_ds *bsp, struct l_shmid_ds *lsp)
237{
238 bsd_to_linux_ipc_perm(&bsp->shm_perm, &lsp->shm_perm);
239 if (bsp->shm_segsz > INT_MAX)
240 lsp->shm_segsz = INT_MAX;
241 else
242 lsp->shm_segsz = bsp->shm_segsz;
243 lsp->shm_lpid = bsp->shm_lpid;
244 lsp->shm_cpid = bsp->shm_cpid;
245 if (bsp->shm_nattch > SHRT_MAX)
246 lsp->shm_nattch = SHRT_MAX;
247 else
248 lsp->shm_nattch = bsp->shm_nattch;
249 lsp->shm_atime = bsp->shm_atime;
250 lsp->shm_dtime = bsp->shm_dtime;
251 lsp->shm_ctime = bsp->shm_ctime;
252 lsp->private3 = 0;
253}
254
255static void
256linux_to_bsd_msqid_ds(struct l_msqid_ds *lsp, struct msqid_ds *bsp)
257{
258 linux_to_bsd_ipc_perm(&lsp->msg_perm, &bsp->msg_perm);
259 bsp->msg_cbytes = lsp->msg_cbytes;
260 bsp->msg_qnum = lsp->msg_qnum;
261 bsp->msg_qbytes = lsp->msg_qbytes;
262 bsp->msg_lspid = lsp->msg_lspid;
263 bsp->msg_lrpid = lsp->msg_lrpid;
264 bsp->msg_stime = lsp->msg_stime;
265 bsp->msg_rtime = lsp->msg_rtime;
266 bsp->msg_ctime = lsp->msg_ctime;
267}
268
269static void
270bsd_to_linux_msqid_ds(struct msqid_ds *bsp, struct l_msqid_ds *lsp)
271{
272 bsd_to_linux_ipc_perm(&bsp->msg_perm, &lsp->msg_perm);
273 lsp->msg_cbytes = bsp->msg_cbytes;
274 lsp->msg_qnum = bsp->msg_qnum;
275 lsp->msg_qbytes = bsp->msg_qbytes;
276 lsp->msg_lspid = bsp->msg_lspid;
277 lsp->msg_lrpid = bsp->msg_lrpid;
278 lsp->msg_stime = bsp->msg_stime;
279 lsp->msg_rtime = bsp->msg_rtime;
280 lsp->msg_ctime = bsp->msg_ctime;
281}
282
283static void
284linux_ipc_perm_to_ipc64_perm(struct l_ipc_perm *in, struct l_ipc64_perm *out)
285{
286
287 /* XXX: do we really need to do something here? */
288 out->key = in->key;
289 out->uid = in->uid;
290 out->gid = in->gid;
291 out->cuid = in->cuid;
292 out->cgid = in->cgid;
293 out->mode = in->mode;
294 out->seq = in->seq;
295}
296
297static int
298linux_msqid_pullup(l_int ver, struct l_msqid_ds *linux_msqid, caddr_t uaddr)
299{
300 struct l_msqid64_ds linux_msqid64;
301 int error;
302
303 if (ver == LINUX_IPC_64) {
304 error = copyin(uaddr, &linux_msqid64, sizeof(linux_msqid64));
305 if (error != 0)
306 return (error);
307
308 bzero(linux_msqid, sizeof(*linux_msqid));
309
310 linux_msqid->msg_perm.uid = linux_msqid64.msg_perm.uid;
311 linux_msqid->msg_perm.gid = linux_msqid64.msg_perm.gid;
312 linux_msqid->msg_perm.mode = linux_msqid64.msg_perm.mode;
313
314 if (linux_msqid64.msg_qbytes > USHRT_MAX)
315 linux_msqid->msg_lqbytes = linux_msqid64.msg_qbytes;
316 else
317 linux_msqid->msg_qbytes = linux_msqid64.msg_qbytes;
318 } else {
319 error = copyin(uaddr, linux_msqid, sizeof(*linux_msqid));
320 }
321 return (error);
322}
323
324static int
325linux_msqid_pushdown(l_int ver, struct l_msqid_ds *linux_msqid, caddr_t uaddr)
326{
327 struct l_msqid64_ds linux_msqid64;
328
329 if (ver == LINUX_IPC_64) {
330 bzero(&linux_msqid64, sizeof(linux_msqid64));
331
332 linux_ipc_perm_to_ipc64_perm(&linux_msqid->msg_perm,
333 &linux_msqid64.msg_perm);
334
335 linux_msqid64.msg_stime = linux_msqid->msg_stime;
336 linux_msqid64.msg_rtime = linux_msqid->msg_rtime;
337 linux_msqid64.msg_ctime = linux_msqid->msg_ctime;
338
339 if (linux_msqid->msg_cbytes == 0)
340 linux_msqid64.msg_cbytes = linux_msqid->msg_lcbytes;
341 else
342 linux_msqid64.msg_cbytes = linux_msqid->msg_cbytes;
343
344 linux_msqid64.msg_qnum = linux_msqid->msg_qnum;
345
346 if (linux_msqid->msg_qbytes == 0)
347 linux_msqid64.msg_qbytes = linux_msqid->msg_lqbytes;
348 else
349 linux_msqid64.msg_qbytes = linux_msqid->msg_qbytes;
350
351 linux_msqid64.msg_lspid = linux_msqid->msg_lspid;
352 linux_msqid64.msg_lrpid = linux_msqid->msg_lrpid;
353
354 return (copyout(&linux_msqid64, uaddr, sizeof(linux_msqid64)));
355 } else {
356 return (copyout(linux_msqid, uaddr, sizeof(*linux_msqid)));
357 }
358}
359
360static int
361linux_semid_pullup(l_int ver, struct l_semid_ds *linux_semid, caddr_t uaddr)
362{
363 struct l_semid64_ds linux_semid64;
364 int error;
365
366 if (ver == LINUX_IPC_64) {
367 error = copyin(uaddr, &linux_semid64, sizeof(linux_semid64));
368 if (error != 0)
369 return (error);
370
371 bzero(linux_semid, sizeof(*linux_semid));
372
373 linux_semid->sem_perm.uid = linux_semid64.sem_perm.uid;
374 linux_semid->sem_perm.gid = linux_semid64.sem_perm.gid;
375 linux_semid->sem_perm.mode = linux_semid64.sem_perm.mode;
376 } else {
377 error = copyin(uaddr, linux_semid, sizeof(*linux_semid));
378 }
379 return (error);
380}
381
382static int
383linux_semid_pushdown(l_int ver, struct l_semid_ds *linux_semid, caddr_t uaddr)
384{
385 struct l_semid64_ds linux_semid64;
386
387 if (ver == LINUX_IPC_64) {
388 bzero(&linux_semid64, sizeof(linux_semid64));
389
390 linux_ipc_perm_to_ipc64_perm(&linux_semid->sem_perm,
391 &linux_semid64.sem_perm);
392
393 linux_semid64.sem_otime = linux_semid->sem_otime;
394 linux_semid64.sem_ctime = linux_semid->sem_ctime;
395 linux_semid64.sem_nsems = linux_semid->sem_nsems;
396
397 return (copyout(&linux_semid64, uaddr, sizeof(linux_semid64)));
398 } else {
399 return (copyout(linux_semid, uaddr, sizeof(*linux_semid)));
400 }
401}
402
403static int
404linux_shmid_pullup(l_int ver, struct l_shmid_ds *linux_shmid, caddr_t uaddr)
405{
406 struct l_shmid64_ds linux_shmid64;
407 int error;
408
409 if (ver == LINUX_IPC_64) {
410 error = copyin(uaddr, &linux_shmid64, sizeof(linux_shmid64));
411 if (error != 0)
412 return (error);
413
414 bzero(linux_shmid, sizeof(*linux_shmid));
415
416 linux_shmid->shm_perm.uid = linux_shmid64.shm_perm.uid;
417 linux_shmid->shm_perm.gid = linux_shmid64.shm_perm.gid;
418 linux_shmid->shm_perm.mode = linux_shmid64.shm_perm.mode;
419 } else {
420 error = copyin(uaddr, linux_shmid, sizeof(*linux_shmid));
421 }
422 return (error);
423}
424
425static int
426linux_shmid_pushdown(l_int ver, struct l_shmid_ds *linux_shmid, caddr_t uaddr)
427{
428 struct l_shmid64_ds linux_shmid64;
429
430 /*
431 * XXX: This is backwards and loses information in shm_nattch
432 * and shm_segsz. We should probably either expose the BSD
433 * shmid structure directly and convert it to either the
434 * non-64 or 64 variant directly or the code should always
435 * convert to the 64 variant and then truncate values into the
436 * non-64 variant if needed since the 64 variant has more
437 * precision.
438 */
439 if (ver == LINUX_IPC_64) {
440 bzero(&linux_shmid64, sizeof(linux_shmid64));
441
442 linux_ipc_perm_to_ipc64_perm(&linux_shmid->shm_perm,
443 &linux_shmid64.shm_perm);
444
445 linux_shmid64.shm_segsz = linux_shmid->shm_segsz;
446 linux_shmid64.shm_atime = linux_shmid->shm_atime;
447 linux_shmid64.shm_dtime = linux_shmid->shm_dtime;
448 linux_shmid64.shm_ctime = linux_shmid->shm_ctime;
449 linux_shmid64.shm_cpid = linux_shmid->shm_cpid;
450 linux_shmid64.shm_lpid = linux_shmid->shm_lpid;
451 linux_shmid64.shm_nattch = linux_shmid->shm_nattch;
452
453 return (copyout(&linux_shmid64, uaddr, sizeof(linux_shmid64)));
454 } else {
455 return (copyout(linux_shmid, uaddr, sizeof(*linux_shmid)));
456 }
457}
458
459static int
460linux_shminfo_pushdown(l_int ver, struct l_shminfo *linux_shminfo,
461 caddr_t uaddr)
462{
463 struct l_shminfo64 linux_shminfo64;
464
465 if (ver == LINUX_IPC_64) {
466 bzero(&linux_shminfo64, sizeof(linux_shminfo64));
467
468 linux_shminfo64.shmmax = linux_shminfo->shmmax;
469 linux_shminfo64.shmmin = linux_shminfo->shmmin;
470 linux_shminfo64.shmmni = linux_shminfo->shmmni;
471 linux_shminfo64.shmseg = linux_shminfo->shmseg;
472 linux_shminfo64.shmall = linux_shminfo->shmall;
473
474 return (copyout(&linux_shminfo64, uaddr,
475 sizeof(linux_shminfo64)));
476 } else {
477 return (copyout(linux_shminfo, uaddr, sizeof(*linux_shminfo)));
478 }
479}
480
481int
482linux_semop(struct thread *td, struct linux_semop_args *args)
483{
484 struct semop_args /* {
485 int semid;
486 struct sembuf *sops;
487 int nsops;
488 } */ bsd_args;
489
490 bsd_args.semid = args->semid;
491 bsd_args.sops = PTRIN(args->tsops);
492 bsd_args.nsops = args->nsops;
493 return semop(td, &bsd_args);
494}
495
496int
497linux_semget(struct thread *td, struct linux_semget_args *args)
498{
499 struct semget_args /* {
500 key_t key;
501 int nsems;
502 int semflg;
503 } */ bsd_args;
504
505 if (args->nsems < 0)
506 return (EINVAL);
507 bsd_args.key = args->key;
508 bsd_args.nsems = args->nsems;
509 bsd_args.semflg = args->semflg;
510 return semget(td, &bsd_args);
511}
512
513int
514linux_semctl(struct thread *td, struct linux_semctl_args *args)
515{
516 struct l_semid_ds linux_semid;
517 struct l_seminfo linux_seminfo;
518 struct semid_ds semid;
519 union semun semun;
520 register_t rval;
521 int cmd, error;
522
523 switch (args->cmd & ~LINUX_IPC_64) {
524 case LINUX_IPC_RMID:
525 cmd = IPC_RMID;
526 break;
527 case LINUX_GETNCNT:
528 cmd = GETNCNT;
529 break;
530 case LINUX_GETPID:
531 cmd = GETPID;
532 break;
533 case LINUX_GETVAL:
534 cmd = GETVAL;
535 break;
536 case LINUX_GETZCNT:
537 cmd = GETZCNT;
538 break;
539 case LINUX_SETVAL:
540 cmd = SETVAL;
541 semun.val = args->arg.val;
542 break;
543 case LINUX_IPC_SET:
544 cmd = IPC_SET;
545 error = linux_semid_pullup(args->cmd & LINUX_IPC_64,
546 &linux_semid, PTRIN(args->arg.buf));
547 if (error)
548 return (error);
549 linux_to_bsd_semid_ds(&linux_semid, &semid);
550 semun.buf = &semid;
551 return (kern_semctl(td, args->semid, args->semnum, cmd, &semun,
552 td->td_retval));
553 case LINUX_IPC_STAT:
554 case LINUX_SEM_STAT:
555 if ((args->cmd & ~LINUX_IPC_64) == LINUX_IPC_STAT)
556 cmd = IPC_STAT;
557 else
558 cmd = SEM_STAT;
559 semun.buf = &semid;
560 error = kern_semctl(td, args->semid, args->semnum, cmd, &semun,
561 &rval);
562 if (error)
563 return (error);
564 bsd_to_linux_semid_ds(&semid, &linux_semid);
565 error = linux_semid_pushdown(args->cmd & LINUX_IPC_64,
566 &linux_semid, PTRIN(args->arg.buf));
567 if (error == 0)
568 td->td_retval[0] = (cmd == SEM_STAT) ? rval : 0;
569 return (error);
570 case LINUX_IPC_INFO:
571 case LINUX_SEM_INFO:
572 bcopy(&seminfo, &linux_seminfo, sizeof(linux_seminfo) );
573/* XXX BSD equivalent?
574#define used_semids 10
575#define used_sems 10
576 linux_seminfo.semusz = used_semids;
577 linux_seminfo.semaem = used_sems;
578*/
579 error = copyout(&linux_seminfo,
580 PTRIN(args->arg.buf), sizeof(linux_seminfo));
581 if (error)
582 return error;
583 td->td_retval[0] = seminfo.semmni;
584 return 0; /* No need for __semctl call */
585 case LINUX_GETALL:
586 cmd = GETALL;
587 semun.val = args->arg.val;
588 break;
589 case LINUX_SETALL:
590 cmd = SETALL;
591 semun.val = args->arg.val;
592 break;
593 default:
594 linux_msg(td, "ipc type %d is not implemented",
595 args->cmd & ~LINUX_IPC_64);
596 return EINVAL;
597 }
598 return (kern_semctl(td, args->semid, args->semnum, cmd, &semun,
599 td->td_retval));
600}
601
602int
603linux_msgsnd(struct thread *td, struct linux_msgsnd_args *args)
604{
605 const void *msgp;
606 long mtype;
607 l_long lmtype;
608 int error;
609
610 if ((l_long)args->msgsz < 0 || args->msgsz > (l_long)msginfo.msgmax)
611 return (EINVAL);
612 msgp = PTRIN(args->msgp);
613 if ((error = copyin(msgp, &lmtype, sizeof(lmtype))) != 0)
614 return (error);
615 mtype = (long)lmtype;
616 return (kern_msgsnd(td, args->msqid,
617 (const char *)msgp + sizeof(lmtype),
618 args->msgsz, args->msgflg, mtype));
619}
620
621int
622linux_msgrcv(struct thread *td, struct linux_msgrcv_args *args)
623{
624 void *msgp;
625 long mtype;
626 l_long lmtype;
627 int error;
628
629 if ((l_long)args->msgsz < 0 || args->msgsz > (l_long)msginfo.msgmax)
630 return (EINVAL);
631 msgp = PTRIN(args->msgp);
632 if ((error = kern_msgrcv(td, args->msqid,
633 (char *)msgp + sizeof(lmtype), args->msgsz,
634 args->msgtyp, args->msgflg, &mtype)) != 0)
635 return (error);
636 lmtype = (l_long)mtype;
637 return (copyout(&lmtype, msgp, sizeof(lmtype)));
638}
639
640int
641linux_msgget(struct thread *td, struct linux_msgget_args *args)
642{
643 struct msgget_args /* {
644 key_t key;
645 int msgflg;
646 } */ bsd_args;
647
648 bsd_args.key = args->key;
649 bsd_args.msgflg = args->msgflg;
650 return msgget(td, &bsd_args);
651}
652
653int
654linux_msgctl(struct thread *td, struct linux_msgctl_args *args)
655{
656 int error, bsd_cmd;
657 struct l_msqid_ds linux_msqid;
658 struct msqid_ds bsd_msqid;
659
660 bsd_cmd = args->cmd & ~LINUX_IPC_64;
661 switch (bsd_cmd) {
662 case LINUX_IPC_INFO:
663 case LINUX_MSG_INFO: {
664 struct l_msginfo linux_msginfo;
665
666 /*
667 * XXX MSG_INFO uses the same data structure but returns different
668 * dynamic counters in msgpool, msgmap, and msgtql fields.
669 */
670 linux_msginfo.msgpool = (long)msginfo.msgmni *
671 (long)msginfo.msgmnb / 1024L; /* XXX MSG_INFO. */
672 linux_msginfo.msgmap = msginfo.msgmnb; /* XXX MSG_INFO. */
673 linux_msginfo.msgmax = msginfo.msgmax;
674 linux_msginfo.msgmnb = msginfo.msgmnb;
675 linux_msginfo.msgmni = msginfo.msgmni;
676 linux_msginfo.msgssz = msginfo.msgssz;
677 linux_msginfo.msgtql = msginfo.msgtql; /* XXX MSG_INFO. */
678 linux_msginfo.msgseg = msginfo.msgseg;
679 error = copyout(&linux_msginfo, PTRIN(args->buf),
680 sizeof(linux_msginfo));
681 if (error == 0)
682 td->td_retval[0] = msginfo.msgmni; /* XXX */
683
684 return (error);
685 }
686
687/*
688 * TODO: implement this
689 * case LINUX_MSG_STAT:
690 */
691 case LINUX_IPC_STAT:
692 /* NOTHING */
693 break;
694
695 case LINUX_IPC_SET:
696 error = linux_msqid_pullup(args->cmd & LINUX_IPC_64,
697 &linux_msqid, PTRIN(args->buf));
698 if (error)
699 return (error);
700 linux_to_bsd_msqid_ds(&linux_msqid, &bsd_msqid);
701 break;
702
703 case LINUX_IPC_RMID:
704 /* NOTHING */
705 break;
706
707 default:
708 return (EINVAL);
709 break;
710 }
711
712 error = kern_msgctl(td, args->msqid, bsd_cmd, &bsd_msqid);
713 if (error != 0)
714 if (bsd_cmd != LINUX_IPC_RMID || error != EINVAL)
715 return (error);
716
717 if (bsd_cmd == LINUX_IPC_STAT) {
718 bsd_to_linux_msqid_ds(&bsd_msqid, &linux_msqid);
719 return (linux_msqid_pushdown(args->cmd & LINUX_IPC_64,
720 &linux_msqid, PTRIN(args->buf)));
721 }
722
723 return (0);
724}
725
726int
727linux_shmat(struct thread *td, struct linux_shmat_args *args)
728{
729 struct shmat_args /* {
730 int shmid;
731 void *shmaddr;
732 int shmflg;
733 } */ bsd_args;
734 int error;
735#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
736 l_uintptr_t addr;
737#endif
738
739 bsd_args.shmid = args->shmid;
740 bsd_args.shmaddr = PTRIN(args->shmaddr);
741 bsd_args.shmflg = args->shmflg;
742 if ((error = shmat(td, &bsd_args)))
743 return error;
744#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
745 addr = td->td_retval[0];
746 if ((error = copyout(&addr, PTRIN(args->raddr), sizeof(addr))))
747 return error;
748 td->td_retval[0] = 0;
749#endif
750 return 0;
751}
752
753int
754linux_shmdt(struct thread *td, struct linux_shmdt_args *args)
755{
756 struct shmdt_args /* {
757 void *shmaddr;
758 } */ bsd_args;
759
760 bsd_args.shmaddr = PTRIN(args->shmaddr);
761 return shmdt(td, &bsd_args);
762}
763
764int
765linux_shmget(struct thread *td, struct linux_shmget_args *args)
766{
767 struct shmget_args /* {
768 key_t key;
769 int size;
770 int shmflg;
771 } */ bsd_args;
772
773 bsd_args.key = args->key;
774 bsd_args.size = args->size;
775 bsd_args.shmflg = args->shmflg;
776 return shmget(td, &bsd_args);
777}
778
779int
780linux_shmctl(struct thread *td, struct linux_shmctl_args *args)
781{
782 struct l_shmid_ds linux_shmid;
783 struct l_shminfo linux_shminfo;
784 struct l_shm_info linux_shm_info;
785 struct shmid_ds bsd_shmid;
786 int error;
787
788 switch (args->cmd & ~LINUX_IPC_64) {
789
790 case LINUX_IPC_INFO: {
791 struct shminfo bsd_shminfo;
792
793 /* Perform shmctl wanting removed segments lookup */
794 error = kern_shmctl(td, args->shmid, IPC_INFO,
795 (void *)&bsd_shminfo, NULL);
796 if (error)
797 return error;
798
799 bsd_to_linux_shminfo(&bsd_shminfo, &linux_shminfo);
800
801 return (linux_shminfo_pushdown(args->cmd & LINUX_IPC_64,
802 &linux_shminfo, PTRIN(args->buf)));
803 }
804
805 case LINUX_SHM_INFO: {
806 struct shm_info bsd_shm_info;
807
808 /* Perform shmctl wanting removed segments lookup */
809 error = kern_shmctl(td, args->shmid, SHM_INFO,
810 (void *)&bsd_shm_info, NULL);
811 if (error)
812 return error;
813
814 bsd_to_linux_shm_info(&bsd_shm_info, &linux_shm_info);
815
816 return copyout(&linux_shm_info, PTRIN(args->buf),
817 sizeof(struct l_shm_info));
818 }
819
820 case LINUX_IPC_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_SHM_STAT:
833 /* Perform shmctl wanting removed segments lookup */
834 error = kern_shmctl(td, args->shmid, IPC_STAT,
835 (void *)&bsd_shmid, NULL);
836 if (error)
837 return error;
838
839 bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid);
840
841 return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64,
842 &linux_shmid, PTRIN(args->buf)));
843
844 case LINUX_IPC_SET:
845 error = linux_shmid_pullup(args->cmd & LINUX_IPC_64,
846 &linux_shmid, PTRIN(args->buf));
847 if (error)
848 return error;
849
850 linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
851
852 /* Perform shmctl wanting removed segments lookup */
853 return kern_shmctl(td, args->shmid, IPC_SET,
854 (void *)&bsd_shmid, NULL);
855
856 case LINUX_IPC_RMID: {
857 void *buf;
858
859 if (args->buf == 0)
860 buf = NULL;
861 else {
862 error = linux_shmid_pullup(args->cmd & LINUX_IPC_64,
863 &linux_shmid, PTRIN(args->buf));
864 if (error)
865 return error;
866 linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
867 buf = (void *)&bsd_shmid;
868 }
869 return kern_shmctl(td, args->shmid, IPC_RMID, buf, NULL);
870 }
871
872 case LINUX_SHM_LOCK:
873 case LINUX_SHM_UNLOCK:
874 default:
| 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
56struct 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
69struct l_shminfo {
70 l_int shmmax;
71 l_int shmmin;
72 l_int shmmni;
73 l_int shmseg;
74 l_int shmall;
75};
76
77struct 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
86struct 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
97static void
98bsd_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
107static void
108bsd_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
118struct 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
128static void
129linux_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
141static void
142bsd_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
153struct 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
173struct 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
188struct 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
202static void
203linux_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
212static void
213bsd_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
222static void
223linux_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}
234
235static void
236bsd_to_linux_shmid_ds(struct shmid_ds *bsp, struct l_shmid_ds *lsp)
237{
238 bsd_to_linux_ipc_perm(&bsp->shm_perm, &lsp->shm_perm);
239 if (bsp->shm_segsz > INT_MAX)
240 lsp->shm_segsz = INT_MAX;
241 else
242 lsp->shm_segsz = bsp->shm_segsz;
243 lsp->shm_lpid = bsp->shm_lpid;
244 lsp->shm_cpid = bsp->shm_cpid;
245 if (bsp->shm_nattch > SHRT_MAX)
246 lsp->shm_nattch = SHRT_MAX;
247 else
248 lsp->shm_nattch = bsp->shm_nattch;
249 lsp->shm_atime = bsp->shm_atime;
250 lsp->shm_dtime = bsp->shm_dtime;
251 lsp->shm_ctime = bsp->shm_ctime;
252 lsp->private3 = 0;
253}
254
255static void
256linux_to_bsd_msqid_ds(struct l_msqid_ds *lsp, struct msqid_ds *bsp)
257{
258 linux_to_bsd_ipc_perm(&lsp->msg_perm, &bsp->msg_perm);
259 bsp->msg_cbytes = lsp->msg_cbytes;
260 bsp->msg_qnum = lsp->msg_qnum;
261 bsp->msg_qbytes = lsp->msg_qbytes;
262 bsp->msg_lspid = lsp->msg_lspid;
263 bsp->msg_lrpid = lsp->msg_lrpid;
264 bsp->msg_stime = lsp->msg_stime;
265 bsp->msg_rtime = lsp->msg_rtime;
266 bsp->msg_ctime = lsp->msg_ctime;
267}
268
269static void
270bsd_to_linux_msqid_ds(struct msqid_ds *bsp, struct l_msqid_ds *lsp)
271{
272 bsd_to_linux_ipc_perm(&bsp->msg_perm, &lsp->msg_perm);
273 lsp->msg_cbytes = bsp->msg_cbytes;
274 lsp->msg_qnum = bsp->msg_qnum;
275 lsp->msg_qbytes = bsp->msg_qbytes;
276 lsp->msg_lspid = bsp->msg_lspid;
277 lsp->msg_lrpid = bsp->msg_lrpid;
278 lsp->msg_stime = bsp->msg_stime;
279 lsp->msg_rtime = bsp->msg_rtime;
280 lsp->msg_ctime = bsp->msg_ctime;
281}
282
283static void
284linux_ipc_perm_to_ipc64_perm(struct l_ipc_perm *in, struct l_ipc64_perm *out)
285{
286
287 /* XXX: do we really need to do something here? */
288 out->key = in->key;
289 out->uid = in->uid;
290 out->gid = in->gid;
291 out->cuid = in->cuid;
292 out->cgid = in->cgid;
293 out->mode = in->mode;
294 out->seq = in->seq;
295}
296
297static int
298linux_msqid_pullup(l_int ver, struct l_msqid_ds *linux_msqid, caddr_t uaddr)
299{
300 struct l_msqid64_ds linux_msqid64;
301 int error;
302
303 if (ver == LINUX_IPC_64) {
304 error = copyin(uaddr, &linux_msqid64, sizeof(linux_msqid64));
305 if (error != 0)
306 return (error);
307
308 bzero(linux_msqid, sizeof(*linux_msqid));
309
310 linux_msqid->msg_perm.uid = linux_msqid64.msg_perm.uid;
311 linux_msqid->msg_perm.gid = linux_msqid64.msg_perm.gid;
312 linux_msqid->msg_perm.mode = linux_msqid64.msg_perm.mode;
313
314 if (linux_msqid64.msg_qbytes > USHRT_MAX)
315 linux_msqid->msg_lqbytes = linux_msqid64.msg_qbytes;
316 else
317 linux_msqid->msg_qbytes = linux_msqid64.msg_qbytes;
318 } else {
319 error = copyin(uaddr, linux_msqid, sizeof(*linux_msqid));
320 }
321 return (error);
322}
323
324static int
325linux_msqid_pushdown(l_int ver, struct l_msqid_ds *linux_msqid, caddr_t uaddr)
326{
327 struct l_msqid64_ds linux_msqid64;
328
329 if (ver == LINUX_IPC_64) {
330 bzero(&linux_msqid64, sizeof(linux_msqid64));
331
332 linux_ipc_perm_to_ipc64_perm(&linux_msqid->msg_perm,
333 &linux_msqid64.msg_perm);
334
335 linux_msqid64.msg_stime = linux_msqid->msg_stime;
336 linux_msqid64.msg_rtime = linux_msqid->msg_rtime;
337 linux_msqid64.msg_ctime = linux_msqid->msg_ctime;
338
339 if (linux_msqid->msg_cbytes == 0)
340 linux_msqid64.msg_cbytes = linux_msqid->msg_lcbytes;
341 else
342 linux_msqid64.msg_cbytes = linux_msqid->msg_cbytes;
343
344 linux_msqid64.msg_qnum = linux_msqid->msg_qnum;
345
346 if (linux_msqid->msg_qbytes == 0)
347 linux_msqid64.msg_qbytes = linux_msqid->msg_lqbytes;
348 else
349 linux_msqid64.msg_qbytes = linux_msqid->msg_qbytes;
350
351 linux_msqid64.msg_lspid = linux_msqid->msg_lspid;
352 linux_msqid64.msg_lrpid = linux_msqid->msg_lrpid;
353
354 return (copyout(&linux_msqid64, uaddr, sizeof(linux_msqid64)));
355 } else {
356 return (copyout(linux_msqid, uaddr, sizeof(*linux_msqid)));
357 }
358}
359
360static int
361linux_semid_pullup(l_int ver, struct l_semid_ds *linux_semid, caddr_t uaddr)
362{
363 struct l_semid64_ds linux_semid64;
364 int error;
365
366 if (ver == LINUX_IPC_64) {
367 error = copyin(uaddr, &linux_semid64, sizeof(linux_semid64));
368 if (error != 0)
369 return (error);
370
371 bzero(linux_semid, sizeof(*linux_semid));
372
373 linux_semid->sem_perm.uid = linux_semid64.sem_perm.uid;
374 linux_semid->sem_perm.gid = linux_semid64.sem_perm.gid;
375 linux_semid->sem_perm.mode = linux_semid64.sem_perm.mode;
376 } else {
377 error = copyin(uaddr, linux_semid, sizeof(*linux_semid));
378 }
379 return (error);
380}
381
382static int
383linux_semid_pushdown(l_int ver, struct l_semid_ds *linux_semid, caddr_t uaddr)
384{
385 struct l_semid64_ds linux_semid64;
386
387 if (ver == LINUX_IPC_64) {
388 bzero(&linux_semid64, sizeof(linux_semid64));
389
390 linux_ipc_perm_to_ipc64_perm(&linux_semid->sem_perm,
391 &linux_semid64.sem_perm);
392
393 linux_semid64.sem_otime = linux_semid->sem_otime;
394 linux_semid64.sem_ctime = linux_semid->sem_ctime;
395 linux_semid64.sem_nsems = linux_semid->sem_nsems;
396
397 return (copyout(&linux_semid64, uaddr, sizeof(linux_semid64)));
398 } else {
399 return (copyout(linux_semid, uaddr, sizeof(*linux_semid)));
400 }
401}
402
403static int
404linux_shmid_pullup(l_int ver, struct l_shmid_ds *linux_shmid, caddr_t uaddr)
405{
406 struct l_shmid64_ds linux_shmid64;
407 int error;
408
409 if (ver == LINUX_IPC_64) {
410 error = copyin(uaddr, &linux_shmid64, sizeof(linux_shmid64));
411 if (error != 0)
412 return (error);
413
414 bzero(linux_shmid, sizeof(*linux_shmid));
415
416 linux_shmid->shm_perm.uid = linux_shmid64.shm_perm.uid;
417 linux_shmid->shm_perm.gid = linux_shmid64.shm_perm.gid;
418 linux_shmid->shm_perm.mode = linux_shmid64.shm_perm.mode;
419 } else {
420 error = copyin(uaddr, linux_shmid, sizeof(*linux_shmid));
421 }
422 return (error);
423}
424
425static int
426linux_shmid_pushdown(l_int ver, struct l_shmid_ds *linux_shmid, caddr_t uaddr)
427{
428 struct l_shmid64_ds linux_shmid64;
429
430 /*
431 * XXX: This is backwards and loses information in shm_nattch
432 * and shm_segsz. We should probably either expose the BSD
433 * shmid structure directly and convert it to either the
434 * non-64 or 64 variant directly or the code should always
435 * convert to the 64 variant and then truncate values into the
436 * non-64 variant if needed since the 64 variant has more
437 * precision.
438 */
439 if (ver == LINUX_IPC_64) {
440 bzero(&linux_shmid64, sizeof(linux_shmid64));
441
442 linux_ipc_perm_to_ipc64_perm(&linux_shmid->shm_perm,
443 &linux_shmid64.shm_perm);
444
445 linux_shmid64.shm_segsz = linux_shmid->shm_segsz;
446 linux_shmid64.shm_atime = linux_shmid->shm_atime;
447 linux_shmid64.shm_dtime = linux_shmid->shm_dtime;
448 linux_shmid64.shm_ctime = linux_shmid->shm_ctime;
449 linux_shmid64.shm_cpid = linux_shmid->shm_cpid;
450 linux_shmid64.shm_lpid = linux_shmid->shm_lpid;
451 linux_shmid64.shm_nattch = linux_shmid->shm_nattch;
452
453 return (copyout(&linux_shmid64, uaddr, sizeof(linux_shmid64)));
454 } else {
455 return (copyout(linux_shmid, uaddr, sizeof(*linux_shmid)));
456 }
457}
458
459static int
460linux_shminfo_pushdown(l_int ver, struct l_shminfo *linux_shminfo,
461 caddr_t uaddr)
462{
463 struct l_shminfo64 linux_shminfo64;
464
465 if (ver == LINUX_IPC_64) {
466 bzero(&linux_shminfo64, sizeof(linux_shminfo64));
467
468 linux_shminfo64.shmmax = linux_shminfo->shmmax;
469 linux_shminfo64.shmmin = linux_shminfo->shmmin;
470 linux_shminfo64.shmmni = linux_shminfo->shmmni;
471 linux_shminfo64.shmseg = linux_shminfo->shmseg;
472 linux_shminfo64.shmall = linux_shminfo->shmall;
473
474 return (copyout(&linux_shminfo64, uaddr,
475 sizeof(linux_shminfo64)));
476 } else {
477 return (copyout(linux_shminfo, uaddr, sizeof(*linux_shminfo)));
478 }
479}
480
481int
482linux_semop(struct thread *td, struct linux_semop_args *args)
483{
484 struct semop_args /* {
485 int semid;
486 struct sembuf *sops;
487 int nsops;
488 } */ bsd_args;
489
490 bsd_args.semid = args->semid;
491 bsd_args.sops = PTRIN(args->tsops);
492 bsd_args.nsops = args->nsops;
493 return semop(td, &bsd_args);
494}
495
496int
497linux_semget(struct thread *td, struct linux_semget_args *args)
498{
499 struct semget_args /* {
500 key_t key;
501 int nsems;
502 int semflg;
503 } */ bsd_args;
504
505 if (args->nsems < 0)
506 return (EINVAL);
507 bsd_args.key = args->key;
508 bsd_args.nsems = args->nsems;
509 bsd_args.semflg = args->semflg;
510 return semget(td, &bsd_args);
511}
512
513int
514linux_semctl(struct thread *td, struct linux_semctl_args *args)
515{
516 struct l_semid_ds linux_semid;
517 struct l_seminfo linux_seminfo;
518 struct semid_ds semid;
519 union semun semun;
520 register_t rval;
521 int cmd, error;
522
523 switch (args->cmd & ~LINUX_IPC_64) {
524 case LINUX_IPC_RMID:
525 cmd = IPC_RMID;
526 break;
527 case LINUX_GETNCNT:
528 cmd = GETNCNT;
529 break;
530 case LINUX_GETPID:
531 cmd = GETPID;
532 break;
533 case LINUX_GETVAL:
534 cmd = GETVAL;
535 break;
536 case LINUX_GETZCNT:
537 cmd = GETZCNT;
538 break;
539 case LINUX_SETVAL:
540 cmd = SETVAL;
541 semun.val = args->arg.val;
542 break;
543 case LINUX_IPC_SET:
544 cmd = IPC_SET;
545 error = linux_semid_pullup(args->cmd & LINUX_IPC_64,
546 &linux_semid, PTRIN(args->arg.buf));
547 if (error)
548 return (error);
549 linux_to_bsd_semid_ds(&linux_semid, &semid);
550 semun.buf = &semid;
551 return (kern_semctl(td, args->semid, args->semnum, cmd, &semun,
552 td->td_retval));
553 case LINUX_IPC_STAT:
554 case LINUX_SEM_STAT:
555 if ((args->cmd & ~LINUX_IPC_64) == LINUX_IPC_STAT)
556 cmd = IPC_STAT;
557 else
558 cmd = SEM_STAT;
559 semun.buf = &semid;
560 error = kern_semctl(td, args->semid, args->semnum, cmd, &semun,
561 &rval);
562 if (error)
563 return (error);
564 bsd_to_linux_semid_ds(&semid, &linux_semid);
565 error = linux_semid_pushdown(args->cmd & LINUX_IPC_64,
566 &linux_semid, PTRIN(args->arg.buf));
567 if (error == 0)
568 td->td_retval[0] = (cmd == SEM_STAT) ? rval : 0;
569 return (error);
570 case LINUX_IPC_INFO:
571 case LINUX_SEM_INFO:
572 bcopy(&seminfo, &linux_seminfo, sizeof(linux_seminfo) );
573/* XXX BSD equivalent?
574#define used_semids 10
575#define used_sems 10
576 linux_seminfo.semusz = used_semids;
577 linux_seminfo.semaem = used_sems;
578*/
579 error = copyout(&linux_seminfo,
580 PTRIN(args->arg.buf), sizeof(linux_seminfo));
581 if (error)
582 return error;
583 td->td_retval[0] = seminfo.semmni;
584 return 0; /* No need for __semctl call */
585 case LINUX_GETALL:
586 cmd = GETALL;
587 semun.val = args->arg.val;
588 break;
589 case LINUX_SETALL:
590 cmd = SETALL;
591 semun.val = args->arg.val;
592 break;
593 default:
594 linux_msg(td, "ipc type %d is not implemented",
595 args->cmd & ~LINUX_IPC_64);
596 return EINVAL;
597 }
598 return (kern_semctl(td, args->semid, args->semnum, cmd, &semun,
599 td->td_retval));
600}
601
602int
603linux_msgsnd(struct thread *td, struct linux_msgsnd_args *args)
604{
605 const void *msgp;
606 long mtype;
607 l_long lmtype;
608 int error;
609
610 if ((l_long)args->msgsz < 0 || args->msgsz > (l_long)msginfo.msgmax)
611 return (EINVAL);
612 msgp = PTRIN(args->msgp);
613 if ((error = copyin(msgp, &lmtype, sizeof(lmtype))) != 0)
614 return (error);
615 mtype = (long)lmtype;
616 return (kern_msgsnd(td, args->msqid,
617 (const char *)msgp + sizeof(lmtype),
618 args->msgsz, args->msgflg, mtype));
619}
620
621int
622linux_msgrcv(struct thread *td, struct linux_msgrcv_args *args)
623{
624 void *msgp;
625 long mtype;
626 l_long lmtype;
627 int error;
628
629 if ((l_long)args->msgsz < 0 || args->msgsz > (l_long)msginfo.msgmax)
630 return (EINVAL);
631 msgp = PTRIN(args->msgp);
632 if ((error = kern_msgrcv(td, args->msqid,
633 (char *)msgp + sizeof(lmtype), args->msgsz,
634 args->msgtyp, args->msgflg, &mtype)) != 0)
635 return (error);
636 lmtype = (l_long)mtype;
637 return (copyout(&lmtype, msgp, sizeof(lmtype)));
638}
639
640int
641linux_msgget(struct thread *td, struct linux_msgget_args *args)
642{
643 struct msgget_args /* {
644 key_t key;
645 int msgflg;
646 } */ bsd_args;
647
648 bsd_args.key = args->key;
649 bsd_args.msgflg = args->msgflg;
650 return msgget(td, &bsd_args);
651}
652
653int
654linux_msgctl(struct thread *td, struct linux_msgctl_args *args)
655{
656 int error, bsd_cmd;
657 struct l_msqid_ds linux_msqid;
658 struct msqid_ds bsd_msqid;
659
660 bsd_cmd = args->cmd & ~LINUX_IPC_64;
661 switch (bsd_cmd) {
662 case LINUX_IPC_INFO:
663 case LINUX_MSG_INFO: {
664 struct l_msginfo linux_msginfo;
665
666 /*
667 * XXX MSG_INFO uses the same data structure but returns different
668 * dynamic counters in msgpool, msgmap, and msgtql fields.
669 */
670 linux_msginfo.msgpool = (long)msginfo.msgmni *
671 (long)msginfo.msgmnb / 1024L; /* XXX MSG_INFO. */
672 linux_msginfo.msgmap = msginfo.msgmnb; /* XXX MSG_INFO. */
673 linux_msginfo.msgmax = msginfo.msgmax;
674 linux_msginfo.msgmnb = msginfo.msgmnb;
675 linux_msginfo.msgmni = msginfo.msgmni;
676 linux_msginfo.msgssz = msginfo.msgssz;
677 linux_msginfo.msgtql = msginfo.msgtql; /* XXX MSG_INFO. */
678 linux_msginfo.msgseg = msginfo.msgseg;
679 error = copyout(&linux_msginfo, PTRIN(args->buf),
680 sizeof(linux_msginfo));
681 if (error == 0)
682 td->td_retval[0] = msginfo.msgmni; /* XXX */
683
684 return (error);
685 }
686
687/*
688 * TODO: implement this
689 * case LINUX_MSG_STAT:
690 */
691 case LINUX_IPC_STAT:
692 /* NOTHING */
693 break;
694
695 case LINUX_IPC_SET:
696 error = linux_msqid_pullup(args->cmd & LINUX_IPC_64,
697 &linux_msqid, PTRIN(args->buf));
698 if (error)
699 return (error);
700 linux_to_bsd_msqid_ds(&linux_msqid, &bsd_msqid);
701 break;
702
703 case LINUX_IPC_RMID:
704 /* NOTHING */
705 break;
706
707 default:
708 return (EINVAL);
709 break;
710 }
711
712 error = kern_msgctl(td, args->msqid, bsd_cmd, &bsd_msqid);
713 if (error != 0)
714 if (bsd_cmd != LINUX_IPC_RMID || error != EINVAL)
715 return (error);
716
717 if (bsd_cmd == LINUX_IPC_STAT) {
718 bsd_to_linux_msqid_ds(&bsd_msqid, &linux_msqid);
719 return (linux_msqid_pushdown(args->cmd & LINUX_IPC_64,
720 &linux_msqid, PTRIN(args->buf)));
721 }
722
723 return (0);
724}
725
726int
727linux_shmat(struct thread *td, struct linux_shmat_args *args)
728{
729 struct shmat_args /* {
730 int shmid;
731 void *shmaddr;
732 int shmflg;
733 } */ bsd_args;
734 int error;
735#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
736 l_uintptr_t addr;
737#endif
738
739 bsd_args.shmid = args->shmid;
740 bsd_args.shmaddr = PTRIN(args->shmaddr);
741 bsd_args.shmflg = args->shmflg;
742 if ((error = shmat(td, &bsd_args)))
743 return error;
744#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
745 addr = td->td_retval[0];
746 if ((error = copyout(&addr, PTRIN(args->raddr), sizeof(addr))))
747 return error;
748 td->td_retval[0] = 0;
749#endif
750 return 0;
751}
752
753int
754linux_shmdt(struct thread *td, struct linux_shmdt_args *args)
755{
756 struct shmdt_args /* {
757 void *shmaddr;
758 } */ bsd_args;
759
760 bsd_args.shmaddr = PTRIN(args->shmaddr);
761 return shmdt(td, &bsd_args);
762}
763
764int
765linux_shmget(struct thread *td, struct linux_shmget_args *args)
766{
767 struct shmget_args /* {
768 key_t key;
769 int size;
770 int shmflg;
771 } */ bsd_args;
772
773 bsd_args.key = args->key;
774 bsd_args.size = args->size;
775 bsd_args.shmflg = args->shmflg;
776 return shmget(td, &bsd_args);
777}
778
779int
780linux_shmctl(struct thread *td, struct linux_shmctl_args *args)
781{
782 struct l_shmid_ds linux_shmid;
783 struct l_shminfo linux_shminfo;
784 struct l_shm_info linux_shm_info;
785 struct shmid_ds bsd_shmid;
786 int error;
787
788 switch (args->cmd & ~LINUX_IPC_64) {
789
790 case LINUX_IPC_INFO: {
791 struct shminfo bsd_shminfo;
792
793 /* Perform shmctl wanting removed segments lookup */
794 error = kern_shmctl(td, args->shmid, IPC_INFO,
795 (void *)&bsd_shminfo, NULL);
796 if (error)
797 return error;
798
799 bsd_to_linux_shminfo(&bsd_shminfo, &linux_shminfo);
800
801 return (linux_shminfo_pushdown(args->cmd & LINUX_IPC_64,
802 &linux_shminfo, PTRIN(args->buf)));
803 }
804
805 case LINUX_SHM_INFO: {
806 struct shm_info bsd_shm_info;
807
808 /* Perform shmctl wanting removed segments lookup */
809 error = kern_shmctl(td, args->shmid, SHM_INFO,
810 (void *)&bsd_shm_info, NULL);
811 if (error)
812 return error;
813
814 bsd_to_linux_shm_info(&bsd_shm_info, &linux_shm_info);
815
816 return copyout(&linux_shm_info, PTRIN(args->buf),
817 sizeof(struct l_shm_info));
818 }
819
820 case LINUX_IPC_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_SHM_STAT:
833 /* Perform shmctl wanting removed segments lookup */
834 error = kern_shmctl(td, args->shmid, IPC_STAT,
835 (void *)&bsd_shmid, NULL);
836 if (error)
837 return error;
838
839 bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid);
840
841 return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64,
842 &linux_shmid, PTRIN(args->buf)));
843
844 case LINUX_IPC_SET:
845 error = linux_shmid_pullup(args->cmd & LINUX_IPC_64,
846 &linux_shmid, PTRIN(args->buf));
847 if (error)
848 return error;
849
850 linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
851
852 /* Perform shmctl wanting removed segments lookup */
853 return kern_shmctl(td, args->shmid, IPC_SET,
854 (void *)&bsd_shmid, NULL);
855
856 case LINUX_IPC_RMID: {
857 void *buf;
858
859 if (args->buf == 0)
860 buf = NULL;
861 else {
862 error = linux_shmid_pullup(args->cmd & LINUX_IPC_64,
863 &linux_shmid, PTRIN(args->buf));
864 if (error)
865 return error;
866 linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
867 buf = (void *)&bsd_shmid;
868 }
869 return kern_shmctl(td, args->shmid, IPC_RMID, buf, NULL);
870 }
871
872 case LINUX_SHM_LOCK:
873 case LINUX_SHM_UNLOCK:
874 default:
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