1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
|
/*-
* Copyright (c) 1994-1995 Søren Schmidt
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software withough specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sysproto.h>
#include <sys/proc.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include <i386/linux/linux.h>
#include <i386/linux/linux_proto.h>
#include <i386/linux/linux_util.h>
static int linux_semop __P((struct proc *, struct linux_ipc_args *));
static int linux_semget __P((struct proc *, struct linux_ipc_args *));
static int linux_semctl __P((struct proc *, struct linux_ipc_args *));
static int linux_msgsnd __P((struct proc *, struct linux_ipc_args *));
static int linux_msgrcv __P((struct proc *, struct linux_ipc_args *));
static int linux_msgctl __P((struct proc *, struct linux_ipc_args *));
static int linux_shmat __P((struct proc *, struct linux_ipc_args *));
static int linux_shmdt __P((struct proc *, struct linux_ipc_args *));
static int linux_shmget __P((struct proc *, struct linux_ipc_args *));
static int linux_shmctl __P((struct proc *, struct linux_ipc_args *));
struct linux_ipc_perm {
linux_key_t key;
unsigned short uid;
unsigned short gid;
unsigned short cuid;
unsigned short cgid;
unsigned short mode;
unsigned short seq;
};
static void
linux_to_bsd_ipc_perm(struct linux_ipc_perm *lpp, struct ipc_perm *bpp)
{
bpp->key = lpp->key;
bpp->uid = lpp->uid;
bpp->gid = lpp->gid;
bpp->cuid = lpp->cuid;
bpp->cgid = lpp->cgid;
bpp->mode = lpp->mode;
bpp->seq = lpp->seq;
}
static void
bsd_to_linux_ipc_perm(struct ipc_perm *bpp, struct linux_ipc_perm *lpp)
{
lpp->key = bpp->key;
lpp->uid = bpp->uid;
lpp->gid = bpp->gid;
lpp->cuid = bpp->cuid;
lpp->cgid = bpp->cgid;
lpp->mode = bpp->mode;
lpp->seq = bpp->seq;
}
struct linux_semid_ds {
struct linux_ipc_perm sem_perm;
linux_time_t sem_otime;
linux_time_t sem_ctime;
void *sem_base;
void *sem_pending;
void *sem_pending_last;
void *undo;
ushort sem_nsems;
};
struct linux_shmid_ds {
struct linux_ipc_perm shm_perm;
int shm_segsz;
linux_time_t shm_atime;
linux_time_t shm_dtime;
linux_time_t shm_ctime;
ushort shm_cpid;
ushort shm_lpid;
short shm_nattch;
ushort private1;
void *private2;
void *private3;
};
static void
linux_to_bsd_semid_ds(struct linux_semid_ds *lsp, struct semid_ds *bsp)
{
linux_to_bsd_ipc_perm(&lsp->sem_perm, &bsp->sem_perm);
bsp->sem_otime = lsp->sem_otime;
bsp->sem_ctime = lsp->sem_ctime;
bsp->sem_nsems = lsp->sem_nsems;
bsp->sem_base = lsp->sem_base;
}
static void
bsd_to_linux_semid_ds(struct semid_ds *bsp, struct linux_semid_ds *lsp)
{
bsd_to_linux_ipc_perm(&bsp->sem_perm, &lsp->sem_perm);
lsp->sem_otime = bsp->sem_otime;
lsp->sem_ctime = bsp->sem_ctime;
lsp->sem_nsems = bsp->sem_nsems;
lsp->sem_base = bsp->sem_base;
}
static void
linux_to_bsd_shmid_ds(struct linux_shmid_ds *lsp, struct shmid_ds *bsp)
{
linux_to_bsd_ipc_perm(&lsp->shm_perm, &bsp->shm_perm);
bsp->shm_segsz = lsp->shm_segsz;
bsp->shm_lpid = lsp->shm_lpid;
bsp->shm_cpid = lsp->shm_cpid;
bsp->shm_nattch = lsp->shm_nattch;
bsp->shm_atime = lsp->shm_atime;
bsp->shm_dtime = lsp->shm_dtime;
bsp->shm_ctime = lsp->shm_ctime;
bsp->shm_internal = lsp->private3; /* this goes (yet) SOS */
}
static void
bsd_to_linux_shmid_ds(struct shmid_ds *bsp, struct linux_shmid_ds *lsp)
{
bsd_to_linux_ipc_perm(&bsp->shm_perm, &lsp->shm_perm);
lsp->shm_segsz = bsp->shm_segsz;
lsp->shm_lpid = bsp->shm_lpid;
lsp->shm_cpid = bsp->shm_cpid;
lsp->shm_nattch = bsp->shm_nattch;
lsp->shm_atime = bsp->shm_atime;
lsp->shm_dtime = bsp->shm_dtime;
lsp->shm_ctime = bsp->shm_ctime;
lsp->private3 = bsp->shm_internal; /* this goes (yet) SOS */
}
static int
linux_semop(struct proc *p, struct linux_ipc_args *args)
{
struct semop_args /* {
int semid;
struct sembuf *sops;
int nsops;
} */ bsd_args;
bsd_args.semid = args->arg1;
bsd_args.sops = (struct sembuf *)args->ptr;
bsd_args.nsops = args->arg2;
return semop(p, &bsd_args);
}
static int
linux_semget(struct proc *p, struct linux_ipc_args *args)
{
struct semget_args /* {
key_t key;
int nsems;
int semflg;
} */ bsd_args;
bsd_args.key = args->arg1;
bsd_args.nsems = args->arg2;
bsd_args.semflg = args->arg3;
return semget(p, &bsd_args);
}
static int
linux_semctl(struct proc *p, struct linux_ipc_args *args)
{
struct linux_semid_ds linux_semid;
struct semid_ds bsd_semid;
struct __semctl_args /* {
int semid;
int semnum;
int cmd;
union semun *arg;
} */ bsd_args;
int error;
caddr_t sg, unptr, dsp, ldsp;
sg = stackgap_init();
bsd_args.semid = args->arg1;
bsd_args.semnum = args->arg2;
bsd_args.cmd = args->arg3;
bsd_args.arg = (union semun *)args->ptr;
switch (args->arg3) {
case LINUX_IPC_RMID:
bsd_args.cmd = IPC_RMID;
break;
case LINUX_GETNCNT:
bsd_args.cmd = GETNCNT;
break;
case LINUX_GETPID:
bsd_args.cmd = GETPID;
break;
case LINUX_GETVAL:
bsd_args.cmd = GETVAL;
break;
case LINUX_GETZCNT:
bsd_args.cmd = GETZCNT;
break;
case LINUX_SETVAL:
bsd_args.cmd = SETVAL;
break;
case LINUX_IPC_SET:
bsd_args.cmd = IPC_SET;
error = copyin(args->ptr, &ldsp, sizeof(ldsp));
if (error)
return error;
error = copyin(ldsp, (caddr_t)&linux_semid, sizeof(linux_semid));
if (error)
return error;
linux_to_bsd_semid_ds(&linux_semid, &bsd_semid);
unptr = stackgap_alloc(&sg, sizeof(union semun));
dsp = stackgap_alloc(&sg, sizeof(struct semid_ds));
error = copyout((caddr_t)&bsd_semid, dsp, sizeof(bsd_semid));
if (error)
return error;
error = copyout((caddr_t)&dsp, unptr, sizeof(dsp));
if (error)
return error;
bsd_args.arg = (union semun *)unptr;
return __semctl(p, &bsd_args);
case LINUX_IPC_STAT:
bsd_args.cmd = IPC_STAT;
unptr = stackgap_alloc(&sg, sizeof(union semun *));
dsp = stackgap_alloc(&sg, sizeof(struct semid_ds));
error = copyout((caddr_t)&dsp, unptr, sizeof(dsp));
if (error)
return error;
bsd_args.arg = (union semun *)unptr;
error = __semctl(p, &bsd_args);
if (error)
return error;
error = copyin(dsp, (caddr_t)&bsd_semid, sizeof(bsd_semid));
if (error)
return error;
bsd_to_linux_semid_ds(&bsd_semid, &linux_semid);
error = copyin(args->ptr, &ldsp, sizeof(ldsp));
if (error)
return error;
return copyout((caddr_t)&linux_semid, ldsp, sizeof(linux_semid));
case LINUX_GETALL:
/* FALLTHROUGH */
case LINUX_SETALL:
/* FALLTHROUGH */
default:
uprintf("LINUX: 'ipc' typ=%d not implemented\n", args->what);
return EINVAL;
}
return __semctl(p, &bsd_args);
}
static int
linux_msgsnd(struct proc *p, struct linux_ipc_args *args)
{
struct msgsnd_args /* {
int msqid;
void *msgp;
size_t msgsz;
int msgflg;
} */ bsd_args;
bsd_args.msqid = args->arg1;
bsd_args.msgp = args->ptr;
bsd_args.msgsz = args->arg2;
bsd_args.msgflg = args->arg3;
return msgsnd(p, &bsd_args);
}
static int
linux_msgrcv(struct proc *p, struct linux_ipc_args *args)
{
struct msgrcv_args /* {
int msqid;
void *msgp;
size_t msgsz;
long msgtyp;
int msgflg;
} */ bsd_args;
bsd_args.msqid = args->arg1;
bsd_args.msgp = args->ptr;
bsd_args.msgsz = args->arg2;
bsd_args.msgtyp = 0;
bsd_args.msgflg = args->arg3;
return msgrcv(p, &bsd_args);
}
static int
linux_msgget(struct proc *p, struct linux_ipc_args *args)
{
struct msgget_args /* {
key_t key;
int msgflg;
} */ bsd_args;
bsd_args.key = args->arg1;
bsd_args.msgflg = args->arg2;
return msgget(p, &bsd_args);
}
static int
linux_msgctl(struct proc *p, struct linux_ipc_args *args)
{
struct msgctl_args /* {
int msqid;
int cmd;
struct msqid_ds *buf;
} */ bsd_args;
bsd_args.msqid = args->arg1;
bsd_args.cmd = args->arg2;
bsd_args.buf = (struct msqid_ds *)args->ptr;
return msgctl(p, &bsd_args);
}
static int
linux_shmat(struct proc *p, struct linux_ipc_args *args)
{
struct shmat_args /* {
int shmid;
void *shmaddr;
int shmflg;
} */ bsd_args;
int error;
bsd_args.shmid = args->arg1;
bsd_args.shmaddr = args->ptr;
bsd_args.shmflg = args->arg2;
if ((error = shmat(p, &bsd_args)))
return error;
if ((error = copyout(p->p_retval, (caddr_t)args->arg3, sizeof(int))))
return error;
p->p_retval[0] = 0;
return 0;
}
static int
linux_shmdt(struct proc *p, struct linux_ipc_args *args)
{
struct shmdt_args /* {
void *shmaddr;
} */ bsd_args;
bsd_args.shmaddr = args->ptr;
return shmdt(p, &bsd_args);
}
static int
linux_shmget(struct proc *p, struct linux_ipc_args *args)
{
struct shmget_args /* {
key_t key;
int size;
int shmflg;
} */ bsd_args;
bsd_args.key = args->arg1;
bsd_args.size = args->arg2;
bsd_args.shmflg = args->arg3;
return shmget(p, &bsd_args);
}
static int
linux_shmctl(struct proc *p, struct linux_ipc_args *args)
{
struct shmid_ds bsd_shmid;
struct linux_shmid_ds linux_shmid;
struct shmctl_args /* {
int shmid;
int cmd;
struct shmid_ds *buf;
} */ bsd_args;
int error;
caddr_t sg = stackgap_init();
switch (args->arg2) {
case LINUX_IPC_STAT:
bsd_args.shmid = args->arg1;
bsd_args.cmd = IPC_STAT;
bsd_args.buf = (struct shmid_ds*)stackgap_alloc(&sg, sizeof(struct shmid_ds));
if ((error = shmctl(p, &bsd_args)))
return error;
if ((error = copyin((caddr_t)bsd_args.buf, (caddr_t)&bsd_shmid,
sizeof(struct shmid_ds))))
return error;
bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid);
return copyout((caddr_t)&linux_shmid, args->ptr, sizeof(linux_shmid));
case LINUX_IPC_SET:
if ((error = copyin(args->ptr, (caddr_t)&linux_shmid,
sizeof(linux_shmid))))
return error;
linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
bsd_args.buf = (struct shmid_ds*)stackgap_alloc(&sg, sizeof(struct shmid_ds));
if ((error = copyout((caddr_t)&bsd_shmid, (caddr_t)bsd_args.buf,
sizeof(struct shmid_ds))))
return error;
bsd_args.shmid = args->arg1;
bsd_args.cmd = IPC_SET;
return shmctl(p, &bsd_args);
case LINUX_IPC_RMID:
bsd_args.shmid = args->arg1;
bsd_args.cmd = IPC_RMID;
if (NULL == args->ptr)
bsd_args.buf = NULL;
else {
if ((error = copyin(args->ptr, (caddr_t)&linux_shmid,
sizeof(linux_shmid))))
return error;
linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
bsd_args.buf = (struct shmid_ds*)stackgap_alloc(&sg, sizeof(struct shmid_ds));
if ((error = copyout((caddr_t)&bsd_shmid, (caddr_t)bsd_args.buf,
sizeof(struct shmid_ds))))
return error;
}
return shmctl(p, &bsd_args);
case LINUX_IPC_INFO:
case LINUX_SHM_STAT:
case LINUX_SHM_INFO:
case LINUX_SHM_LOCK:
case LINUX_SHM_UNLOCK:
default:
uprintf("LINUX: 'ipc' typ=%d not implemented\n", args->what);
return EINVAL;
}
}
int
linux_ipc(struct proc *p, struct linux_ipc_args *args)
{
switch (args->what) {
case LINUX_SEMOP:
return linux_semop(p, args);
case LINUX_SEMGET:
return linux_semget(p, args);
case LINUX_SEMCTL:
return linux_semctl(p, args);
case LINUX_MSGSND:
return linux_msgsnd(p, args);
case LINUX_MSGRCV:
return linux_msgrcv(p, args);
case LINUX_MSGGET:
return linux_msgget(p, args);
case LINUX_MSGCTL:
return linux_msgctl(p, args);
case LINUX_SHMAT:
return linux_shmat(p, args);
case LINUX_SHMDT:
return linux_shmdt(p, args);
case LINUX_SHMGET:
return linux_shmget(p, args);
case LINUX_SHMCTL:
return linux_shmctl(p, args);
default:
uprintf("LINUX: 'ipc' typ=%d not implemented\n", args->what);
return ENOSYS;
}
}
|