1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 1994-1995 Søren Schmidt
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/syscallsubr.h>
35 #include <sys/sysproto.h>
36 #include <sys/proc.h>
37 #include <sys/limits.h>
38 #include <sys/msg.h>
39 #include <sys/sem.h>
40 #include <sys/shm.h>
41 #include <sys/stat.h>
42
43 #include "opt_compat.h"
44
45 #ifdef COMPAT_LINUX32
46 #include <machine/../linux32/linux.h>
47 #include <machine/../linux32/linux32_proto.h>
48 #else
49 #include <machine/../linux/linux.h>
50 #include <machine/../linux/linux_proto.h>
51 #endif
52 #include <compat/linux/linux_ipc.h>
53 #include <compat/linux/linux_ipc64.h>
54 #include <compat/linux/linux_timer.h>
55 #include <compat/linux/linux_util.h>
56
57 /*
58 * old, pre 2.4 kernel
59 */
60 struct l_ipc_perm {
61 l_key_t key;
62 l_uid16_t uid;
63 l_gid16_t gid;
64 l_uid16_t cuid;
65 l_gid16_t cgid;
66 l_ushort mode;
67 l_ushort seq;
68 };
69
70 struct l_seminfo {
71 l_int semmap;
72 l_int semmni;
73 l_int semmns;
74 l_int semmnu;
75 l_int semmsl;
76 l_int semopm;
77 l_int semume;
78 l_int semusz;
79 l_int semvmx;
80 l_int semaem;
81 };
82
83 struct l_shminfo {
84 l_int shmmax;
85 l_int shmmin;
86 l_int shmmni;
87 l_int shmseg;
88 l_int shmall;
89 };
90
91 struct l_shm_info {
92 l_int used_ids;
93 l_ulong shm_tot; /* total allocated shm */
94 l_ulong shm_rss; /* total resident shm */
95 l_ulong shm_swp; /* total swapped shm */
96 l_ulong swap_attempts;
97 l_ulong swap_successes;
98 };
99
100 struct l_msginfo {
101 l_int msgpool;
102 l_int msgmap;
103 l_int msgmax;
104 l_int msgmnb;
105 l_int msgmni;
106 l_int msgssz;
107 l_int msgtql;
108 l_ushort msgseg;
109 };
110
111 static void
112 bsd_to_linux_shminfo( struct shminfo *bpp, struct l_shminfo64 *lpp)
113 {
114
115 lpp->shmmax = bpp->shmmax;
116 lpp->shmmin = bpp->shmmin;
117 lpp->shmmni = bpp->shmmni;
118 lpp->shmseg = bpp->shmseg;
119 lpp->shmall = bpp->shmall;
120 }
121
122 static void
123 bsd_to_linux_shm_info( struct shm_info *bpp, struct l_shm_info *lpp)
124 {
125
126 lpp->used_ids = bpp->used_ids;
127 lpp->shm_tot = bpp->shm_tot;
128 lpp->shm_rss = bpp->shm_rss;
129 lpp->shm_swp = bpp->shm_swp;
130 lpp->swap_attempts = bpp->swap_attempts;
131 lpp->swap_successes = bpp->swap_successes;
132 }
133
134 static void
135 linux_to_bsd_ipc_perm(struct l_ipc64_perm *lpp, struct ipc_perm *bpp)
136 {
137
138 bpp->key = lpp->key;
139 bpp->uid = lpp->uid;
140 bpp->gid = lpp->gid;
141 bpp->cuid = lpp->cuid;
142 bpp->cgid = lpp->cgid;
143 bpp->mode = lpp->mode;
144 bpp->seq = lpp->seq;
145 }
146
147 static void
148 bsd_to_linux_ipc_perm(struct ipc_perm *bpp, struct l_ipc64_perm *lpp)
149 {
150
151 lpp->key = bpp->key;
152 lpp->uid = bpp->uid;
153 lpp->gid = bpp->gid;
154 lpp->cuid = bpp->cuid;
155 lpp->cgid = bpp->cgid;
156 lpp->mode = bpp->mode & (S_IRWXU|S_IRWXG|S_IRWXO);
157 lpp->seq = bpp->seq;
158 }
159
160 struct l_msqid_ds {
161 struct l_ipc_perm msg_perm;
162 l_uintptr_t msg_first; /* first message on queue,unused */
163 l_uintptr_t msg_last; /* last message in queue,unused */
164 l_time_t msg_stime; /* last msgsnd time */
165 l_time_t msg_rtime; /* last msgrcv time */
166 l_time_t msg_ctime; /* last change time */
167 l_ulong msg_lcbytes; /* Reuse junk fields for 32 bit */
168 l_ulong msg_lqbytes; /* ditto */
169 l_ushort msg_cbytes; /* current number of bytes on queue */
170 l_ushort msg_qnum; /* number of messages in queue */
171 l_ushort msg_qbytes; /* max number of bytes on queue */
172 l_pid_t msg_lspid; /* pid of last msgsnd */
173 l_pid_t msg_lrpid; /* last receive pid */
174 };
175
176 struct l_semid_ds {
177 struct l_ipc_perm sem_perm;
178 l_time_t sem_otime;
179 l_time_t sem_ctime;
180 l_uintptr_t sem_base;
181 l_uintptr_t sem_pending;
182 l_uintptr_t sem_pending_last;
183 l_uintptr_t undo;
184 l_ushort sem_nsems;
185 };
186
187 struct l_shmid_ds {
188 struct l_ipc_perm shm_perm;
189 l_int shm_segsz;
190 l_time_t shm_atime;
191 l_time_t shm_dtime;
192 l_time_t shm_ctime;
193 l_ushort shm_cpid;
194 l_ushort shm_lpid;
195 l_short shm_nattch;
196 l_ushort private1;
197 l_uintptr_t private2;
198 l_uintptr_t private3;
199 };
200
201 static void
202 linux_to_bsd_semid_ds(struct l_semid64_ds *lsp, struct semid_ds *bsp)
203 {
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 }
210
211 static void
212 bsd_to_linux_semid_ds(struct semid_ds *bsp, struct l_semid64_ds *lsp)
213 {
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 }
220
221 static void
222 linux_to_bsd_shmid_ds(struct l_shmid64_ds *lsp, struct shmid_ds *bsp)
223 {
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
235 static void
236 bsd_to_linux_shmid_ds(struct shmid_ds *bsp, struct l_shmid64_ds *lsp)
237 {
238
239 bsd_to_linux_ipc_perm(&bsp->shm_perm, &lsp->shm_perm);
240 lsp->shm_segsz = bsp->shm_segsz;
241 lsp->shm_lpid = bsp->shm_lpid;
242 lsp->shm_cpid = bsp->shm_cpid;
243 lsp->shm_nattch = bsp->shm_nattch;
244 lsp->shm_atime = bsp->shm_atime;
245 lsp->shm_dtime = bsp->shm_dtime;
246 lsp->shm_ctime = bsp->shm_ctime;
247 }
248
249 static void
250 linux_to_bsd_msqid_ds(struct l_msqid64_ds *lsp, struct msqid_ds *bsp)
251 {
252
253 linux_to_bsd_ipc_perm(&lsp->msg_perm, &bsp->msg_perm);
254 bsp->msg_cbytes = lsp->msg_cbytes;
255 bsp->msg_qnum = lsp->msg_qnum;
256 bsp->msg_qbytes = lsp->msg_qbytes;
257 bsp->msg_lspid = lsp->msg_lspid;
258 bsp->msg_lrpid = lsp->msg_lrpid;
259 bsp->msg_stime = lsp->msg_stime;
260 bsp->msg_rtime = lsp->msg_rtime;
261 bsp->msg_ctime = lsp->msg_ctime;
262 }
263
264 static void
265 bsd_to_linux_msqid_ds(struct msqid_ds *bsp, struct l_msqid64_ds *lsp)
266 {
267
268 bsd_to_linux_ipc_perm(&bsp->msg_perm, &lsp->msg_perm);
269 lsp->msg_cbytes = bsp->msg_cbytes;
270 lsp->msg_qnum = bsp->msg_qnum;
271 lsp->msg_qbytes = bsp->msg_qbytes;
272 lsp->msg_lspid = bsp->msg_lspid;
273 lsp->msg_lrpid = bsp->msg_lrpid;
274 lsp->msg_stime = bsp->msg_stime;
275 lsp->msg_rtime = bsp->msg_rtime;
276 lsp->msg_ctime = bsp->msg_ctime;
277 }
278
279 static int
280 linux_ipc64_perm_to_ipc_perm(struct l_ipc64_perm *in, struct l_ipc_perm *out)
281 {
282
283 out->key = in->key;
284 out->uid = in->uid;
285 out->gid = in->gid;
286 out->cuid = in->cuid;
287 out->cgid = in->cgid;
288 out->mode = in->mode;
289 out->seq = in->seq;
290
291 /* Linux does not check overflow */
292 if (out->uid != in->uid || out->gid != in->gid ||
293 out->cuid != in->cuid || out->cgid != in->cgid ||
294 out->mode != in->mode)
295 return (EOVERFLOW);
296 else
297 return (0);
298 }
299
300 static int
301 linux_msqid_pullup(l_int ver, struct l_msqid64_ds *linux_msqid64, caddr_t uaddr)
302 {
303 struct l_msqid_ds linux_msqid;
304 int error;
305
306 if (ver == LINUX_IPC_64 || SV_CURPROC_FLAG(SV_LP64))
307 return (copyin(uaddr, linux_msqid64, sizeof(*linux_msqid64)));
308 else {
309 error = copyin(uaddr, &linux_msqid, sizeof(linux_msqid));
310 if (error != 0)
311 return (error);
312
313 bzero(linux_msqid64, sizeof(*linux_msqid64));
314
315 linux_msqid64->msg_perm.uid = linux_msqid.msg_perm.uid;
316 linux_msqid64->msg_perm.gid = linux_msqid.msg_perm.gid;
317 linux_msqid64->msg_perm.mode = linux_msqid.msg_perm.mode;
318 if (linux_msqid.msg_qbytes == 0)
319 linux_msqid64->msg_qbytes = linux_msqid.msg_lqbytes;
320 else
321 linux_msqid64->msg_qbytes = linux_msqid.msg_qbytes;
322 return (0);
323 }
324 }
325
326 static int
327 linux_msqid_pushdown(l_int ver, struct l_msqid64_ds *linux_msqid64, caddr_t uaddr)
328 {
329 struct l_msqid_ds linux_msqid;
330 int error;
331
332 if (ver == LINUX_IPC_64 || SV_CURPROC_FLAG(SV_LP64))
333 return (copyout(linux_msqid64, uaddr, sizeof(*linux_msqid64)));
334 else {
335 bzero(&linux_msqid, sizeof(linux_msqid));
336
337 error = linux_ipc64_perm_to_ipc_perm(&linux_msqid64->msg_perm,
338 &linux_msqid.msg_perm);
339 if (error != 0)
340 return (error);
341
342 linux_msqid.msg_stime = linux_msqid64->msg_stime;
343 linux_msqid.msg_rtime = linux_msqid64->msg_rtime;
344 linux_msqid.msg_ctime = linux_msqid64->msg_ctime;
345
346 if (linux_msqid64->msg_cbytes > USHRT_MAX)
347 linux_msqid.msg_cbytes = USHRT_MAX;
348 else
349 linux_msqid.msg_cbytes = linux_msqid64->msg_cbytes;
350 linux_msqid.msg_lcbytes = linux_msqid64->msg_cbytes;
351 if (linux_msqid64->msg_qnum > USHRT_MAX)
352 linux_msqid.msg_qnum = USHRT_MAX;
353 else
354 linux_msqid.msg_qnum = linux_msqid64->msg_qnum;
355 if (linux_msqid64->msg_qbytes > USHRT_MAX)
356 linux_msqid.msg_qbytes = USHRT_MAX;
357 else
358 linux_msqid.msg_qbytes = linux_msqid64->msg_qbytes;
359 linux_msqid.msg_lqbytes = linux_msqid64->msg_qbytes;
360 linux_msqid.msg_lspid = linux_msqid64->msg_lspid;
361 linux_msqid.msg_lrpid = linux_msqid64->msg_lrpid;
362
363 /* Linux does not check overflow */
364 if (linux_msqid.msg_stime != linux_msqid64->msg_stime ||
365 linux_msqid.msg_rtime != linux_msqid64->msg_rtime ||
366 linux_msqid.msg_ctime != linux_msqid64->msg_ctime)
367 return (EOVERFLOW);
368
369 return (copyout(&linux_msqid, uaddr, sizeof(linux_msqid)));
370 }
371 }
372
373 static int
374 linux_semid_pullup(l_int ver, struct l_semid64_ds *linux_semid64, caddr_t uaddr)
375 {
376 struct l_semid_ds linux_semid;
377 int error;
378
379 if (ver == LINUX_IPC_64 || SV_CURPROC_FLAG(SV_LP64))
380 return (copyin(uaddr, linux_semid64, sizeof(*linux_semid64)));
381 else {
382 error = copyin(uaddr, &linux_semid, sizeof(linux_semid));
383 if (error != 0)
384 return (error);
385
386 bzero(linux_semid64, sizeof(*linux_semid64));
387
388 linux_semid64->sem_perm.uid = linux_semid.sem_perm.uid;
389 linux_semid64->sem_perm.gid = linux_semid.sem_perm.gid;
390 linux_semid64->sem_perm.mode = linux_semid.sem_perm.mode;
391 return (0);
392 }
393 }
394
395 static int
396 linux_semid_pushdown(l_int ver, struct l_semid64_ds *linux_semid64, caddr_t uaddr)
397 {
398 struct l_semid_ds linux_semid;
399 int error;
400
401 if (ver == LINUX_IPC_64 || SV_CURPROC_FLAG(SV_LP64))
402 return (copyout(linux_semid64, uaddr, sizeof(*linux_semid64)));
403 else {
404 bzero(&linux_semid, sizeof(linux_semid));
405
406 error = linux_ipc64_perm_to_ipc_perm(&linux_semid64->sem_perm,
407 &linux_semid.sem_perm);
408 if (error != 0)
409 return (error);
410
411 linux_semid.sem_otime = linux_semid64->sem_otime;
412 linux_semid.sem_ctime = linux_semid64->sem_ctime;
413 linux_semid.sem_nsems = linux_semid64->sem_nsems;
414
415 /* Linux does not check overflow */
416 if (linux_semid.sem_otime != linux_semid64->sem_otime ||
417 linux_semid.sem_ctime != linux_semid64->sem_ctime ||
418 linux_semid.sem_nsems != linux_semid64->sem_nsems)
419 return (EOVERFLOW);
420
421 return (copyout(&linux_semid, uaddr, sizeof(linux_semid)));
422 }
423 }
424
425 static int
426 linux_shmid_pullup(l_int ver, struct l_shmid64_ds *linux_shmid64, caddr_t uaddr)
427 {
428 struct l_shmid_ds linux_shmid;
429 int error;
430
431 if (ver == LINUX_IPC_64 || SV_CURPROC_FLAG(SV_LP64))
432 return (copyin(uaddr, linux_shmid64, sizeof(*linux_shmid64)));
433 else {
434 error = copyin(uaddr, &linux_shmid, sizeof(linux_shmid));
435 if (error != 0)
436 return (error);
437
438 bzero(linux_shmid64, sizeof(*linux_shmid64));
439
440 linux_shmid64->shm_perm.uid = linux_shmid.shm_perm.uid;
441 linux_shmid64->shm_perm.gid = linux_shmid.shm_perm.gid;
442 linux_shmid64->shm_perm.mode = linux_shmid.shm_perm.mode;
443 return (0);
444 }
445 }
446
447 static int
448 linux_shmid_pushdown(l_int ver, struct l_shmid64_ds *linux_shmid64, caddr_t uaddr)
449 {
450 struct l_shmid_ds linux_shmid;
451 int error;
452
453 if (ver == LINUX_IPC_64 || SV_CURPROC_FLAG(SV_LP64))
454 return (copyout(linux_shmid64, uaddr, sizeof(*linux_shmid64)));
455 else {
456 bzero(&linux_shmid, sizeof(linux_shmid));
457
458 error = linux_ipc64_perm_to_ipc_perm(&linux_shmid64->shm_perm,
459 &linux_shmid.shm_perm);
460 if (error != 0)
461 return (error);
462
463 linux_shmid.shm_segsz = linux_shmid64->shm_segsz;
464 linux_shmid.shm_atime = linux_shmid64->shm_atime;
465 linux_shmid.shm_dtime = linux_shmid64->shm_dtime;
466 linux_shmid.shm_ctime = linux_shmid64->shm_ctime;
467 linux_shmid.shm_cpid = linux_shmid64->shm_cpid;
468 linux_shmid.shm_lpid = linux_shmid64->shm_lpid;
469 linux_shmid.shm_nattch = linux_shmid64->shm_nattch;
470
471 /* Linux does not check overflow */
472 if (linux_shmid.shm_segsz != linux_shmid64->shm_segsz ||
473 linux_shmid.shm_atime != linux_shmid64->shm_atime ||
474 linux_shmid.shm_dtime != linux_shmid64->shm_dtime ||
475 linux_shmid.shm_ctime != linux_shmid64->shm_ctime ||
476 linux_shmid.shm_cpid != linux_shmid64->shm_cpid ||
477 linux_shmid.shm_lpid != linux_shmid64->shm_lpid ||
478 linux_shmid.shm_nattch != linux_shmid64->shm_nattch)
479 return (EOVERFLOW);
480
481 return (copyout(&linux_shmid, uaddr, sizeof(linux_shmid)));
482 }
483 }
484
485 static int
486 linux_shminfo_pushdown(l_int ver, struct l_shminfo64 *linux_shminfo64,
487 caddr_t uaddr)
488 {
489 struct l_shminfo linux_shminfo;
490
491 if (ver == LINUX_IPC_64 || SV_CURPROC_FLAG(SV_LP64))
492 return (copyout(linux_shminfo64, uaddr,
493 sizeof(*linux_shminfo64)));
494 else {
495 bzero(&linux_shminfo, sizeof(linux_shminfo));
496
497 linux_shminfo.shmmax = linux_shminfo64->shmmax;
498 linux_shminfo.shmmin = linux_shminfo64->shmmin;
499 linux_shminfo.shmmni = linux_shminfo64->shmmni;
500 linux_shminfo.shmseg = linux_shminfo64->shmseg;
501 linux_shminfo.shmall = linux_shminfo64->shmall;
502
503 return (copyout(&linux_shminfo, uaddr,
504 sizeof(linux_shminfo)));
505 }
506 }
507
508 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
509 int
510 linux_semtimedop_time64(struct thread *td, struct linux_semtimedop_time64_args *args)
511 {
512 struct timespec ts, *tsa;
513 int error;
514
515 if (args->timeout) {
516 error = linux_get_timespec64(&ts, args->timeout);
517 if (error != 0)
518 return (error);
519 tsa = &ts;
520 } else
521 tsa = NULL;
522
523 return (kern_semop(td, args->semid, PTRIN(args->tsops),
524 args->nsops, tsa));
525 }
526 #endif /* __i386__) || (__amd64__ && COMPAT_LINUX32) */
527
528 int
529 linux_semtimedop(struct thread *td, struct linux_semtimedop_args *args)
530 {
531 struct timespec ts, *tsa;
532 int error;
533
534 if (args->timeout) {
535 error = linux_get_timespec(&ts, args->timeout);
536 if (error != 0)
537 return (error);
538 tsa = &ts;
539 } else
540 tsa = NULL;
541
542 return (kern_semop(td, args->semid, PTRIN(args->tsops),
543 args->nsops, tsa));
544 }
545
546 int
547 linux_semget(struct thread *td, struct linux_semget_args *args)
548 {
549 struct semget_args /* {
550 key_t key;
551 int nsems;
552 int semflg;
553 } */ bsd_args;
554
555 if (args->nsems < 0)
556 return (EINVAL);
557 bsd_args.key = args->key;
558 bsd_args.nsems = args->nsems;
559 bsd_args.semflg = args->semflg;
560 return (sys_semget(td, &bsd_args));
561 }
562
563 int
564 linux_semctl(struct thread *td, struct linux_semctl_args *args)
565 {
566 struct l_semid64_ds linux_semid64;
567 struct l_seminfo linux_seminfo;
568 struct semid_ds semid;
569 union semun semun;
570 register_t rval;
571 int cmd, error;
572
573 memset(&linux_seminfo, 0, sizeof(linux_seminfo));
574 memset(&linux_semid64, 0, sizeof(linux_semid64));
575
576 switch (args->cmd & ~LINUX_IPC_64) {
577 case LINUX_IPC_RMID:
578 cmd = IPC_RMID;
579 break;
580 case LINUX_GETNCNT:
581 cmd = GETNCNT;
582 break;
583 case LINUX_GETPID:
584 cmd = GETPID;
585 break;
586 case LINUX_GETVAL:
587 cmd = GETVAL;
588 break;
589 case LINUX_GETZCNT:
590 cmd = GETZCNT;
591 break;
592 case LINUX_SETVAL:
593 cmd = SETVAL;
594 semun.val = args->arg.val;
595 break;
596 case LINUX_IPC_SET:
597 cmd = IPC_SET;
598 error = linux_semid_pullup(args->cmd & LINUX_IPC_64,
599 &linux_semid64, PTRIN(args->arg.buf));
600 if (error != 0)
601 return (error);
602 linux_to_bsd_semid_ds(&linux_semid64, &semid);
603 semun.buf = &semid;
604 return (kern_semctl(td, args->semid, args->semnum, cmd, &semun,
605 td->td_retval));
606 case LINUX_IPC_STAT:
607 cmd = IPC_STAT;
608 semun.buf = &semid;
609 error = kern_semctl(td, args->semid, args->semnum, cmd, &semun,
610 &rval);
611 if (error != 0)
612 return (error);
613 bsd_to_linux_semid_ds(&semid, &linux_semid64);
614 return (linux_semid_pushdown(args->cmd & LINUX_IPC_64,
615 &linux_semid64, PTRIN(args->arg.buf)));
616 case LINUX_SEM_STAT:
617 cmd = SEM_STAT;
618 semun.buf = &semid;
619 error = kern_semctl(td, args->semid, args->semnum, cmd, &semun,
620 &rval);
621 if (error != 0)
622 return (error);
623 bsd_to_linux_semid_ds(&semid, &linux_semid64);
624 error = linux_semid_pushdown(args->cmd & LINUX_IPC_64,
625 &linux_semid64, PTRIN(args->arg.buf));
626 if (error == 0)
627 td->td_retval[0] = rval;
628 return (error);
629 case LINUX_IPC_INFO:
630 case LINUX_SEM_INFO:
631 bcopy(&seminfo, &linux_seminfo.semmni, sizeof(linux_seminfo) -
632 sizeof(linux_seminfo.semmap) );
633 /*
634 * Linux does not use the semmap field but populates it with
635 * the defined value from SEMMAP, which really is redefined to
636 * SEMMNS, which they define as SEMMNI * SEMMSL. Try to
637 * simulate this returning our dynamic semmns value.
638 */
639 linux_seminfo.semmap = linux_seminfo.semmns;
640 /* XXX BSD equivalent?
641 #define used_semids 10
642 #define used_sems 10
643 linux_seminfo.semusz = used_semids;
644 linux_seminfo.semaem = used_sems;
645 */
646 error = copyout(&linux_seminfo,
647 PTRIN(args->arg.buf), sizeof(linux_seminfo));
648 if (error != 0)
649 return (error);
650 /*
651 * TODO: Linux return the last assigned id, not the semmni.
652 */
653 td->td_retval[0] = seminfo.semmni;
654 return (0);
655 case LINUX_GETALL:
656 cmd = GETALL;
657 semun.array = PTRIN(args->arg.array);
658 break;
659 case LINUX_SETALL:
660 cmd = SETALL;
661 semun.array = PTRIN(args->arg.array);
662 break;
663 default:
664 linux_msg(td, "ipc type %d is not implemented",
665 args->cmd & ~LINUX_IPC_64);
666 return (EINVAL);
667 }
668 return (kern_semctl(td, args->semid, args->semnum, cmd, &semun,
669 td->td_retval));
670 }
671
672 int
673 linux_msgsnd(struct thread *td, struct linux_msgsnd_args *args)
674 {
675 const void *msgp;
676 long mtype;
677 l_long lmtype;
678 int error;
679
680 if ((l_long)args->msgsz < 0 || args->msgsz > (l_long)msginfo.msgmax)
681 return (EINVAL);
682 msgp = PTRIN(args->msgp);
683 if ((error = copyin(msgp, &lmtype, sizeof(lmtype))) != 0)
684 return (error);
685 mtype = (long)lmtype;
686 return (kern_msgsnd(td, args->msqid,
687 (const char *)msgp + sizeof(lmtype),
688 args->msgsz, args->msgflg, mtype));
689 }
690
691 int
692 linux_msgrcv(struct thread *td, struct linux_msgrcv_args *args)
693 {
694 void *msgp;
695 long mtype;
696 l_long lmtype;
697 int error;
698
699 if ((l_long)args->msgsz < 0 || args->msgsz > (l_long)msginfo.msgmax)
700 return (EINVAL);
701 msgp = PTRIN(args->msgp);
702 if ((error = kern_msgrcv(td, args->msqid,
703 (char *)msgp + sizeof(lmtype), args->msgsz,
704 args->msgtyp, args->msgflg, &mtype)) != 0)
705 return (error);
706 lmtype = (l_long)mtype;
707 return (copyout(&lmtype, msgp, sizeof(lmtype)));
708 }
709
710 int
711 linux_msgget(struct thread *td, struct linux_msgget_args *args)
712 {
713 struct msgget_args /* {
714 key_t key;
715 int msgflg;
716 } */ bsd_args;
717
718 bsd_args.key = args->key;
719 bsd_args.msgflg = args->msgflg;
720 return (sys_msgget(td, &bsd_args));
721 }
722
723 int
724 linux_msgctl(struct thread *td, struct linux_msgctl_args *args)
725 {
726 int error, bsd_cmd;
727 struct l_msqid64_ds linux_msqid64;
728 struct msqid_ds bsd_msqid;
729
730 memset(&linux_msqid64, 0, sizeof(linux_msqid64));
731
732 bsd_cmd = args->cmd & ~LINUX_IPC_64;
733 switch (bsd_cmd) {
734 case LINUX_IPC_INFO:
735 case LINUX_MSG_INFO: {
736 struct l_msginfo linux_msginfo;
737
738 memset(&linux_msginfo, 0, sizeof(linux_msginfo));
739 /*
740 * XXX MSG_INFO uses the same data structure but returns different
741 * dynamic counters in msgpool, msgmap, and msgtql fields.
742 */
743 linux_msginfo.msgpool = (long)msginfo.msgmni *
744 (long)msginfo.msgmnb / 1024L; /* XXX MSG_INFO. */
745 linux_msginfo.msgmap = msginfo.msgmnb; /* XXX MSG_INFO. */
746 linux_msginfo.msgmax = msginfo.msgmax;
747 linux_msginfo.msgmnb = msginfo.msgmnb;
748 linux_msginfo.msgmni = msginfo.msgmni;
749 linux_msginfo.msgssz = msginfo.msgssz;
750 linux_msginfo.msgtql = msginfo.msgtql; /* XXX MSG_INFO. */
751 linux_msginfo.msgseg = msginfo.msgseg;
752 error = copyout(&linux_msginfo, PTRIN(args->buf),
753 sizeof(linux_msginfo));
754 if (error == 0)
755 td->td_retval[0] = msginfo.msgmni; /* XXX */
756
757 return (error);
758 }
759
760 /*
761 * TODO: implement this
762 * case LINUX_MSG_STAT:
763 */
764 case LINUX_IPC_STAT:
765 /* NOTHING */
766 break;
767
768 case LINUX_IPC_SET:
769 error = linux_msqid_pullup(args->cmd & LINUX_IPC_64,
770 &linux_msqid64, PTRIN(args->buf));
771 if (error != 0)
772 return (error);
773 linux_to_bsd_msqid_ds(&linux_msqid64, &bsd_msqid);
774 break;
775
776 case LINUX_IPC_RMID:
777 /* NOTHING */
778 break;
779
780 default:
781 return (EINVAL);
782 break;
783 }
784
785 error = kern_msgctl(td, args->msqid, bsd_cmd, &bsd_msqid);
786 if (error != 0) {
787 if (bsd_cmd == LINUX_IPC_RMID && error == EACCES)
788 return (EPERM);
789 if (bsd_cmd != LINUX_IPC_RMID || error != EINVAL)
790 return (error);
791 }
792
793 if (bsd_cmd == LINUX_IPC_STAT) {
794 bsd_to_linux_msqid_ds(&bsd_msqid, &linux_msqid64);
795 return (linux_msqid_pushdown(args->cmd & LINUX_IPC_64,
796 &linux_msqid64, PTRIN(args->buf)));
797 }
798
799 return (0);
800 }
801
802 int
803 linux_shmat(struct thread *td, struct linux_shmat_args *args)
804 {
805 struct shmat_args /* {
806 int shmid;
807 void *shmaddr;
808 int shmflg;
809 } */ bsd_args;
810
811 bsd_args.shmid = args->shmid;
812 bsd_args.shmaddr = PTRIN(args->shmaddr);
813 bsd_args.shmflg = args->shmflg;
814 return (sys_shmat(td, &bsd_args));
815 }
816
817 int
818 linux_shmdt(struct thread *td, struct linux_shmdt_args *args)
819 {
820 struct shmdt_args /* {
821 void *shmaddr;
822 } */ bsd_args;
823
824 bsd_args.shmaddr = PTRIN(args->shmaddr);
825 return (sys_shmdt(td, &bsd_args));
826 }
827
828 int
829 linux_shmget(struct thread *td, struct linux_shmget_args *args)
830 {
831 struct shmget_args /* {
832 key_t key;
833 int size;
834 int shmflg;
835 } */ bsd_args;
836
837 bsd_args.key = args->key;
838 bsd_args.size = args->size;
839 bsd_args.shmflg = args->shmflg;
840 return (sys_shmget(td, &bsd_args));
841 }
842
843 int
844 linux_shmctl(struct thread *td, struct linux_shmctl_args *args)
845 {
846 struct l_shmid64_ds linux_shmid64;
847 struct l_shminfo64 linux_shminfo64;
848 struct l_shm_info linux_shm_info;
849 struct shmid_ds bsd_shmid;
850 int error;
851
852 memset(&linux_shm_info, 0, sizeof(linux_shm_info));
853 memset(&linux_shmid64, 0, sizeof(linux_shmid64));
854 memset(&linux_shminfo64, 0, sizeof(linux_shminfo64));
855
856 switch (args->cmd & ~LINUX_IPC_64) {
857 case LINUX_IPC_INFO: {
858 struct shminfo bsd_shminfo;
859
860 /* Perform shmctl wanting removed segments lookup */
861 error = kern_shmctl(td, args->shmid, IPC_INFO,
862 (void *)&bsd_shminfo, NULL);
863 if (error != 0)
864 return (error);
865
866 bsd_to_linux_shminfo(&bsd_shminfo, &linux_shminfo64);
867
868 return (linux_shminfo_pushdown(args->cmd & LINUX_IPC_64,
869 &linux_shminfo64, PTRIN(args->buf)));
870 }
871
872 case LINUX_SHM_INFO: {
873 struct shm_info bsd_shm_info;
874
875 /* Perform shmctl wanting removed segments lookup */
876 error = kern_shmctl(td, args->shmid, SHM_INFO,
877 (void *)&bsd_shm_info, NULL);
878 if (error != 0)
879 return (error);
880
881 bsd_to_linux_shm_info(&bsd_shm_info, &linux_shm_info);
882
883 return (copyout(&linux_shm_info, PTRIN(args->buf),
884 sizeof(struct l_shm_info)));
885 }
886
887 case LINUX_IPC_STAT:
888 /* Perform shmctl wanting removed segments lookup */
889 error = kern_shmctl(td, args->shmid, IPC_STAT,
890 (void *)&bsd_shmid, NULL);
891 if (error != 0)
892 return (error);
893
894 bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid64);
895
896 return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64,
897 &linux_shmid64, PTRIN(args->buf)));
898
899 case LINUX_SHM_STAT:
900 /* Perform shmctl wanting removed segments lookup */
901 error = kern_shmctl(td, args->shmid, IPC_STAT,
902 (void *)&bsd_shmid, NULL);
903 if (error != 0)
904 return (error);
905
906 bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid64);
907
908 return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64,
909 &linux_shmid64, PTRIN(args->buf)));
910
911 case LINUX_IPC_SET:
912 error = linux_shmid_pullup(args->cmd & LINUX_IPC_64,
913 &linux_shmid64, PTRIN(args->buf));
914 if (error != 0)
915 return (error);
916
917 linux_to_bsd_shmid_ds(&linux_shmid64, &bsd_shmid);
918
919 /* Perform shmctl wanting removed segments lookup */
920 return (kern_shmctl(td, args->shmid, IPC_SET,
921 (void *)&bsd_shmid, NULL));
922
923 case LINUX_IPC_RMID: {
924 void *buf;
925
926 if (args->buf == 0)
927 buf = NULL;
928 else {
929 error = linux_shmid_pullup(args->cmd & LINUX_IPC_64,
930 &linux_shmid64, PTRIN(args->buf));
931 if (error != 0)
932 return (error);
933 linux_to_bsd_shmid_ds(&linux_shmid64, &bsd_shmid);
934 buf = (void *)&bsd_shmid;
935 }
936 return (kern_shmctl(td, args->shmid, IPC_RMID, buf, NULL));
937 }
938
939 case LINUX_SHM_LOCK:
940 /* FALLTHROUGH */
941 case LINUX_SHM_UNLOCK:
942 /* FALLTHROUGH */
943 default:
944 linux_msg(td, "ipc type %d not implemented",
945 args->cmd & ~LINUX_IPC_64);
946 return (EINVAL);
947 }
948 }
949
950 MODULE_DEPEND(linux, sysvmsg, 1, 1, 1);
951 MODULE_DEPEND(linux, sysvsem, 1, 1, 1);
952 MODULE_DEPEND(linux, sysvshm, 1, 1, 1);
Cache object: 77f05bbe5b37fc62da904552c160d74c
|