1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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/param.h> 30 #include <sys/limits.h> 31 #include <sys/msg.h> 32 #include <sys/proc.h> 33 #include <sys/sem.h> 34 #include <sys/shm.h> 35 #include <sys/stat.h> 36 #include <sys/syscallsubr.h> 37 #include <sys/sysent.h> 38 #include <sys/sysproto.h> 39 40 #ifdef COMPAT_LINUX32 41 #include <machine/../linux32/linux.h> 42 #include <machine/../linux32/linux32_proto.h> 43 #else 44 #include <machine/../linux/linux.h> 45 #include <machine/../linux/linux_proto.h> 46 #endif 47 #include <compat/linux/linux_ipc.h> 48 #include <compat/linux/linux_ipc64.h> 49 #include <compat/linux/linux_time.h> 50 #include <compat/linux/linux_util.h> 51 52 /* 53 * old, pre 2.4 kernel 54 */ 55 struct l_ipc_perm { 56 l_key_t key; 57 l_uid16_t uid; 58 l_gid16_t gid; 59 l_uid16_t cuid; 60 l_gid16_t cgid; 61 l_ushort mode; 62 l_ushort seq; 63 }; 64 65 struct l_seminfo { 66 l_int semmap; 67 l_int semmni; 68 l_int semmns; 69 l_int semmnu; 70 l_int semmsl; 71 l_int semopm; 72 l_int semume; 73 l_int semusz; 74 l_int semvmx; 75 l_int semaem; 76 }; 77 78 struct l_shminfo { 79 l_int shmmax; 80 l_int shmmin; 81 l_int shmmni; 82 l_int shmseg; 83 l_int shmall; 84 }; 85 86 struct l_shm_info { 87 l_int used_ids; 88 l_ulong shm_tot; /* total allocated shm */ 89 l_ulong shm_rss; /* total resident shm */ 90 l_ulong shm_swp; /* total swapped shm */ 91 l_ulong swap_attempts; 92 l_ulong swap_successes; 93 }; 94 95 struct l_msginfo { 96 l_int msgpool; 97 l_int msgmap; 98 l_int msgmax; 99 l_int msgmnb; 100 l_int msgmni; 101 l_int msgssz; 102 l_int msgtql; 103 l_ushort msgseg; 104 }; 105 106 static void 107 bsd_to_linux_shminfo( struct shminfo *bpp, struct l_shminfo64 *lpp) 108 { 109 110 lpp->shmmax = bpp->shmmax; 111 lpp->shmmin = bpp->shmmin; 112 lpp->shmmni = bpp->shmmni; 113 lpp->shmseg = bpp->shmseg; 114 lpp->shmall = bpp->shmall; 115 } 116 117 static void 118 bsd_to_linux_shm_info( struct shm_info *bpp, struct l_shm_info *lpp) 119 { 120 121 lpp->used_ids = bpp->used_ids; 122 lpp->shm_tot = bpp->shm_tot; 123 lpp->shm_rss = bpp->shm_rss; 124 lpp->shm_swp = bpp->shm_swp; 125 lpp->swap_attempts = bpp->swap_attempts; 126 lpp->swap_successes = bpp->swap_successes; 127 } 128 129 static void 130 linux_to_bsd_ipc_perm(struct l_ipc64_perm *lpp, struct ipc_perm *bpp) 131 { 132 133 bpp->key = lpp->key; 134 bpp->uid = lpp->uid; 135 bpp->gid = lpp->gid; 136 bpp->cuid = lpp->cuid; 137 bpp->cgid = lpp->cgid; 138 bpp->mode = lpp->mode; 139 bpp->seq = lpp->seq; 140 } 141 142 static void 143 bsd_to_linux_ipc_perm(struct ipc_perm *bpp, struct l_ipc64_perm *lpp) 144 { 145 146 lpp->key = bpp->key; 147 lpp->uid = bpp->uid; 148 lpp->gid = bpp->gid; 149 lpp->cuid = bpp->cuid; 150 lpp->cgid = bpp->cgid; 151 lpp->mode = bpp->mode & (S_IRWXU|S_IRWXG|S_IRWXO); 152 lpp->seq = bpp->seq; 153 } 154 155 struct l_msqid_ds { 156 struct l_ipc_perm msg_perm; 157 l_uintptr_t msg_first; /* first message on queue,unused */ 158 l_uintptr_t msg_last; /* last message in queue,unused */ 159 l_time_t msg_stime; /* last msgsnd time */ 160 l_time_t msg_rtime; /* last msgrcv time */ 161 l_time_t msg_ctime; /* last change time */ 162 l_ulong msg_lcbytes; /* Reuse junk fields for 32 bit */ 163 l_ulong msg_lqbytes; /* ditto */ 164 l_ushort msg_cbytes; /* current number of bytes on queue */ 165 l_ushort msg_qnum; /* number of messages in queue */ 166 l_ushort msg_qbytes; /* max number of bytes on queue */ 167 l_pid_t msg_lspid; /* pid of last msgsnd */ 168 l_pid_t msg_lrpid; /* last receive pid */ 169 }; 170 171 struct l_semid_ds { 172 struct l_ipc_perm sem_perm; 173 l_time_t sem_otime; 174 l_time_t sem_ctime; 175 l_uintptr_t sem_base; 176 l_uintptr_t sem_pending; 177 l_uintptr_t sem_pending_last; 178 l_uintptr_t undo; 179 l_ushort sem_nsems; 180 }; 181 182 struct l_shmid_ds { 183 struct l_ipc_perm shm_perm; 184 l_int shm_segsz; 185 l_time_t shm_atime; 186 l_time_t shm_dtime; 187 l_time_t shm_ctime; 188 l_ushort shm_cpid; 189 l_ushort shm_lpid; 190 l_short shm_nattch; 191 l_ushort private1; 192 l_uintptr_t private2; 193 l_uintptr_t private3; 194 }; 195 196 static void 197 linux_to_bsd_semid_ds(struct l_semid64_ds *lsp, struct semid_ds *bsp) 198 { 199 200 linux_to_bsd_ipc_perm(&lsp->sem_perm, &bsp->sem_perm); 201 bsp->sem_otime = lsp->sem_otime; 202 bsp->sem_ctime = lsp->sem_ctime; 203 bsp->sem_nsems = lsp->sem_nsems; 204 } 205 206 static void 207 bsd_to_linux_semid_ds(struct semid_ds *bsp, struct l_semid64_ds *lsp) 208 { 209 210 bsd_to_linux_ipc_perm(&bsp->sem_perm, &lsp->sem_perm); 211 lsp->sem_otime = bsp->sem_otime; 212 lsp->sem_ctime = bsp->sem_ctime; 213 lsp->sem_nsems = bsp->sem_nsems; 214 } 215 216 static void 217 linux_to_bsd_shmid_ds(struct l_shmid64_ds *lsp, struct shmid_ds *bsp) 218 { 219 220 linux_to_bsd_ipc_perm(&lsp->shm_perm, &bsp->shm_perm); 221 bsp->shm_segsz = lsp->shm_segsz; 222 bsp->shm_lpid = lsp->shm_lpid; 223 bsp->shm_cpid = lsp->shm_cpid; 224 bsp->shm_nattch = lsp->shm_nattch; 225 bsp->shm_atime = lsp->shm_atime; 226 bsp->shm_dtime = lsp->shm_dtime; 227 bsp->shm_ctime = lsp->shm_ctime; 228 } 229 230 static void 231 bsd_to_linux_shmid_ds(struct shmid_ds *bsp, struct l_shmid64_ds *lsp) 232 { 233 234 bsd_to_linux_ipc_perm(&bsp->shm_perm, &lsp->shm_perm); 235 lsp->shm_segsz = bsp->shm_segsz; 236 lsp->shm_lpid = bsp->shm_lpid; 237 lsp->shm_cpid = bsp->shm_cpid; 238 lsp->shm_nattch = bsp->shm_nattch; 239 lsp->shm_atime = bsp->shm_atime; 240 lsp->shm_dtime = bsp->shm_dtime; 241 lsp->shm_ctime = bsp->shm_ctime; 242 } 243 244 static void 245 linux_to_bsd_msqid_ds(struct l_msqid64_ds *lsp, struct msqid_ds *bsp) 246 { 247 248 linux_to_bsd_ipc_perm(&lsp->msg_perm, &bsp->msg_perm); 249 bsp->msg_cbytes = lsp->msg_cbytes; 250 bsp->msg_qnum = lsp->msg_qnum; 251 bsp->msg_qbytes = lsp->msg_qbytes; 252 bsp->msg_lspid = lsp->msg_lspid; 253 bsp->msg_lrpid = lsp->msg_lrpid; 254 bsp->msg_stime = lsp->msg_stime; 255 bsp->msg_rtime = lsp->msg_rtime; 256 bsp->msg_ctime = lsp->msg_ctime; 257 } 258 259 static void 260 bsd_to_linux_msqid_ds(struct msqid_ds *bsp, struct l_msqid64_ds *lsp) 261 { 262 263 bsd_to_linux_ipc_perm(&bsp->msg_perm, &lsp->msg_perm); 264 lsp->msg_cbytes = bsp->msg_cbytes; 265 lsp->msg_qnum = bsp->msg_qnum; 266 lsp->msg_qbytes = bsp->msg_qbytes; 267 lsp->msg_lspid = bsp->msg_lspid; 268 lsp->msg_lrpid = bsp->msg_lrpid; 269 lsp->msg_stime = bsp->msg_stime; 270 lsp->msg_rtime = bsp->msg_rtime; 271 lsp->msg_ctime = bsp->msg_ctime; 272 } 273 274 static int 275 linux_ipc64_perm_to_ipc_perm(struct l_ipc64_perm *in, struct l_ipc_perm *out) 276 { 277 278 out->key = in->key; 279 out->uid = in->uid; 280 out->gid = in->gid; 281 out->cuid = in->cuid; 282 out->cgid = in->cgid; 283 out->mode = in->mode; 284 out->seq = in->seq; 285 286 /* Linux does not check overflow */ 287 if (out->uid != in->uid || out->gid != in->gid || 288 out->cuid != in->cuid || out->cgid != in->cgid || 289 out->mode != in->mode) 290 return (EOVERFLOW); 291 else 292 return (0); 293 } 294 295 static int 296 linux_msqid_pullup(l_int ver, struct l_msqid64_ds *linux_msqid64, caddr_t uaddr) 297 { 298 struct l_msqid_ds linux_msqid; 299 int error; 300 301 if (ver == LINUX_IPC_64 || SV_CURPROC_FLAG(SV_LP64)) 302 return (copyin(uaddr, linux_msqid64, sizeof(*linux_msqid64))); 303 304 error = copyin(uaddr, &linux_msqid, sizeof(linux_msqid)); 305 if (error != 0) 306 return (error); 307 308 bzero(linux_msqid64, sizeof(*linux_msqid64)); 309 linux_msqid64->msg_perm.uid = linux_msqid.msg_perm.uid; 310 linux_msqid64->msg_perm.gid = linux_msqid.msg_perm.gid; 311 linux_msqid64->msg_perm.mode = linux_msqid.msg_perm.mode; 312 if (linux_msqid.msg_qbytes == 0) 313 linux_msqid64->msg_qbytes = linux_msqid.msg_lqbytes; 314 else 315 linux_msqid64->msg_qbytes = linux_msqid.msg_qbytes; 316 return (0); 317 } 318 319 static int 320 linux_msqid_pushdown(l_int ver, struct l_msqid64_ds *linux_msqid64, caddr_t uaddr) 321 { 322 struct l_msqid_ds linux_msqid; 323 int error; 324 325 if (ver == LINUX_IPC_64 || SV_CURPROC_FLAG(SV_LP64)) 326 return (copyout(linux_msqid64, uaddr, sizeof(*linux_msqid64))); 327 328 bzero(&linux_msqid, sizeof(linux_msqid)); 329 error = linux_ipc64_perm_to_ipc_perm(&linux_msqid64->msg_perm, 330 &linux_msqid.msg_perm); 331 if (error != 0) 332 return (error); 333 334 linux_msqid.msg_stime = linux_msqid64->msg_stime; 335 linux_msqid.msg_rtime = linux_msqid64->msg_rtime; 336 linux_msqid.msg_ctime = linux_msqid64->msg_ctime; 337 338 if (linux_msqid64->msg_cbytes > USHRT_MAX) 339 linux_msqid.msg_cbytes = USHRT_MAX; 340 else 341 linux_msqid.msg_cbytes = linux_msqid64->msg_cbytes; 342 linux_msqid.msg_lcbytes = linux_msqid64->msg_cbytes; 343 if (linux_msqid64->msg_qnum > USHRT_MAX) 344 linux_msqid.msg_qnum = USHRT_MAX; 345 else 346 linux_msqid.msg_qnum = linux_msqid64->msg_qnum; 347 if (linux_msqid64->msg_qbytes > USHRT_MAX) 348 linux_msqid.msg_qbytes = USHRT_MAX; 349 else 350 linux_msqid.msg_qbytes = linux_msqid64->msg_qbytes; 351 linux_msqid.msg_lqbytes = linux_msqid64->msg_qbytes; 352 linux_msqid.msg_lspid = linux_msqid64->msg_lspid; 353 linux_msqid.msg_lrpid = linux_msqid64->msg_lrpid; 354 355 /* Linux does not check overflow */ 356 if (linux_msqid.msg_stime != linux_msqid64->msg_stime || 357 linux_msqid.msg_rtime != linux_msqid64->msg_rtime || 358 linux_msqid.msg_ctime != linux_msqid64->msg_ctime) 359 return (EOVERFLOW); 360 return (copyout(&linux_msqid, uaddr, sizeof(linux_msqid))); 361 } 362 363 static int 364 linux_semid_pullup(l_int ver, struct l_semid64_ds *linux_semid64, caddr_t uaddr) 365 { 366 struct l_semid_ds linux_semid; 367 int error; 368 369 if (ver == LINUX_IPC_64 || SV_CURPROC_FLAG(SV_LP64)) 370 return (copyin(uaddr, linux_semid64, sizeof(*linux_semid64))); 371 error = copyin(uaddr, &linux_semid, sizeof(linux_semid)); 372 if (error != 0) 373 return (error); 374 375 bzero(linux_semid64, sizeof(*linux_semid64)); 376 linux_semid64->sem_perm.uid = linux_semid.sem_perm.uid; 377 linux_semid64->sem_perm.gid = linux_semid.sem_perm.gid; 378 linux_semid64->sem_perm.mode = linux_semid.sem_perm.mode; 379 return (0); 380 } 381 382 static int 383 linux_semid_pushdown(l_int ver, struct l_semid64_ds *linux_semid64, caddr_t uaddr) 384 { 385 struct l_semid_ds linux_semid; 386 int error; 387 388 if (ver == LINUX_IPC_64 || SV_CURPROC_FLAG(SV_LP64)) 389 return (copyout(linux_semid64, uaddr, sizeof(*linux_semid64))); 390 391 bzero(&linux_semid, sizeof(linux_semid)); 392 error = linux_ipc64_perm_to_ipc_perm(&linux_semid64->sem_perm, 393 &linux_semid.sem_perm); 394 if (error != 0) 395 return (error); 396 397 linux_semid.sem_otime = linux_semid64->sem_otime; 398 linux_semid.sem_ctime = linux_semid64->sem_ctime; 399 linux_semid.sem_nsems = linux_semid64->sem_nsems; 400 401 /* Linux does not check overflow */ 402 if (linux_semid.sem_otime != linux_semid64->sem_otime || 403 linux_semid.sem_ctime != linux_semid64->sem_ctime || 404 linux_semid.sem_nsems != linux_semid64->sem_nsems) 405 return (EOVERFLOW); 406 return (copyout(&linux_semid, uaddr, sizeof(linux_semid))); 407 } 408 409 static int 410 linux_shmid_pullup(l_int ver, struct l_shmid64_ds *linux_shmid64, caddr_t uaddr) 411 { 412 struct l_shmid_ds linux_shmid; 413 int error; 414 415 if (ver == LINUX_IPC_64 || SV_CURPROC_FLAG(SV_LP64)) 416 return (copyin(uaddr, linux_shmid64, sizeof(*linux_shmid64))); 417 418 error = copyin(uaddr, &linux_shmid, sizeof(linux_shmid)); 419 if (error != 0) 420 return (error); 421 422 bzero(linux_shmid64, sizeof(*linux_shmid64)); 423 linux_shmid64->shm_perm.uid = linux_shmid.shm_perm.uid; 424 linux_shmid64->shm_perm.gid = linux_shmid.shm_perm.gid; 425 linux_shmid64->shm_perm.mode = linux_shmid.shm_perm.mode; 426 return (0); 427 } 428 429 static int 430 linux_shmid_pushdown(l_int ver, struct l_shmid64_ds *linux_shmid64, caddr_t uaddr) 431 { 432 struct l_shmid_ds linux_shmid; 433 int error; 434 435 if (ver == LINUX_IPC_64 || SV_CURPROC_FLAG(SV_LP64)) 436 return (copyout(linux_shmid64, uaddr, sizeof(*linux_shmid64))); 437 438 bzero(&linux_shmid, sizeof(linux_shmid)); 439 error = linux_ipc64_perm_to_ipc_perm(&linux_shmid64->shm_perm, 440 &linux_shmid.shm_perm); 441 if (error != 0) 442 return (error); 443 444 linux_shmid.shm_segsz = linux_shmid64->shm_segsz; 445 linux_shmid.shm_atime = linux_shmid64->shm_atime; 446 linux_shmid.shm_dtime = linux_shmid64->shm_dtime; 447 linux_shmid.shm_ctime = linux_shmid64->shm_ctime; 448 linux_shmid.shm_cpid = linux_shmid64->shm_cpid; 449 linux_shmid.shm_lpid = linux_shmid64->shm_lpid; 450 linux_shmid.shm_nattch = linux_shmid64->shm_nattch; 451 452 /* Linux does not check overflow */ 453 if (linux_shmid.shm_segsz != linux_shmid64->shm_segsz || 454 linux_shmid.shm_atime != linux_shmid64->shm_atime || 455 linux_shmid.shm_dtime != linux_shmid64->shm_dtime || 456 linux_shmid.shm_ctime != linux_shmid64->shm_ctime || 457 linux_shmid.shm_cpid != linux_shmid64->shm_cpid || 458 linux_shmid.shm_lpid != linux_shmid64->shm_lpid || 459 linux_shmid.shm_nattch != linux_shmid64->shm_nattch) 460 return (EOVERFLOW); 461 return (copyout(&linux_shmid, uaddr, sizeof(linux_shmid))); 462 } 463 464 static int 465 linux_shminfo_pushdown(l_int ver, struct l_shminfo64 *linux_shminfo64, 466 caddr_t uaddr) 467 { 468 struct l_shminfo linux_shminfo; 469 470 if (ver == LINUX_IPC_64 || SV_CURPROC_FLAG(SV_LP64)) 471 return (copyout(linux_shminfo64, uaddr, 472 sizeof(*linux_shminfo64))); 473 474 bzero(&linux_shminfo, sizeof(linux_shminfo)); 475 linux_shminfo.shmmax = linux_shminfo64->shmmax; 476 linux_shminfo.shmmin = linux_shminfo64->shmmin; 477 linux_shminfo.shmmni = linux_shminfo64->shmmni; 478 linux_shminfo.shmseg = linux_shminfo64->shmseg; 479 linux_shminfo.shmall = linux_shminfo64->shmall; 480 return (copyout(&linux_shminfo, uaddr, sizeof(linux_shminfo))); 481 } 482 483 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 484 int 485 linux_semtimedop_time64(struct thread *td, struct linux_semtimedop_time64_args *args) 486 { 487 struct timespec ts, *tsa; 488 int error; 489 490 if (args->timeout) { 491 error = linux_get_timespec64(&ts, args->timeout); 492 if (error != 0) 493 return (error); 494 tsa = &ts; 495 } else 496 tsa = NULL; 497 498 return (kern_semop(td, args->semid, PTRIN(args->tsops), 499 args->nsops, tsa)); 500 } 501 #endif /* __i386__) || (__amd64__ && COMPAT_LINUX32) */ 502 503 int 504 linux_semtimedop(struct thread *td, struct linux_semtimedop_args *args) 505 { 506 struct timespec ts, *tsa; 507 int error; 508 509 if (args->timeout) { 510 error = linux_get_timespec(&ts, args->timeout); 511 if (error != 0) 512 return (error); 513 tsa = &ts; 514 } else 515 tsa = NULL; 516 517 return (kern_semop(td, args->semid, PTRIN(args->tsops), 518 args->nsops, tsa)); 519 } 520 521 int 522 linux_semget(struct thread *td, struct linux_semget_args *args) 523 { 524 struct semget_args bsd_args = { 525 .key = args->key, 526 .nsems = args->nsems, 527 .semflg = args->semflg 528 }; 529 530 if (args->nsems < 0) 531 return (EINVAL); 532 return (sys_semget(td, &bsd_args)); 533 } 534 535 int 536 linux_semctl(struct thread *td, struct linux_semctl_args *args) 537 { 538 struct l_semid64_ds linux_semid64; 539 struct l_seminfo linux_seminfo; 540 struct semid_ds semid; 541 union semun semun; 542 register_t rval; 543 int cmd, error; 544 545 memset(&linux_seminfo, 0, sizeof(linux_seminfo)); 546 memset(&linux_semid64, 0, sizeof(linux_semid64)); 547 548 switch (args->cmd & ~LINUX_IPC_64) { 549 case LINUX_IPC_RMID: 550 cmd = IPC_RMID; 551 break; 552 case LINUX_GETNCNT: 553 cmd = GETNCNT; 554 break; 555 case LINUX_GETPID: 556 cmd = GETPID; 557 break; 558 case LINUX_GETVAL: 559 cmd = GETVAL; 560 break; 561 case LINUX_GETZCNT: 562 cmd = GETZCNT; 563 break; 564 case LINUX_SETVAL: 565 cmd = SETVAL; 566 semun.val = args->arg.val; 567 break; 568 case LINUX_IPC_SET: 569 cmd = IPC_SET; 570 error = linux_semid_pullup(args->cmd & LINUX_IPC_64, 571 &linux_semid64, PTRIN(args->arg.buf)); 572 if (error != 0) 573 return (error); 574 linux_to_bsd_semid_ds(&linux_semid64, &semid); 575 semun.buf = &semid; 576 return (kern_semctl(td, args->semid, args->semnum, cmd, &semun, 577 td->td_retval)); 578 case LINUX_IPC_STAT: 579 cmd = IPC_STAT; 580 semun.buf = &semid; 581 error = kern_semctl(td, args->semid, args->semnum, cmd, &semun, 582 &rval); 583 if (error != 0) 584 return (error); 585 bsd_to_linux_semid_ds(&semid, &linux_semid64); 586 return (linux_semid_pushdown(args->cmd & LINUX_IPC_64, 587 &linux_semid64, PTRIN(args->arg.buf))); 588 case LINUX_SEM_STAT: 589 cmd = SEM_STAT; 590 semun.buf = &semid; 591 error = kern_semctl(td, args->semid, args->semnum, cmd, &semun, 592 &rval); 593 if (error != 0) 594 return (error); 595 bsd_to_linux_semid_ds(&semid, &linux_semid64); 596 error = linux_semid_pushdown(args->cmd & LINUX_IPC_64, 597 &linux_semid64, PTRIN(args->arg.buf)); 598 if (error == 0) 599 td->td_retval[0] = rval; 600 return (error); 601 case LINUX_IPC_INFO: 602 case LINUX_SEM_INFO: 603 bcopy(&seminfo, &linux_seminfo.semmni, sizeof(linux_seminfo) - 604 sizeof(linux_seminfo.semmap) ); 605 /* 606 * Linux does not use the semmap field but populates it with 607 * the defined value from SEMMAP, which really is redefined to 608 * SEMMNS, which they define as SEMMNI * SEMMSL. Try to 609 * simulate this returning our dynamic semmns value. 610 */ 611 linux_seminfo.semmap = linux_seminfo.semmns; 612 /* XXX BSD equivalent? 613 #define used_semids 10 614 #define used_sems 10 615 linux_seminfo.semusz = used_semids; 616 linux_seminfo.semaem = used_sems; 617 */ 618 error = copyout(&linux_seminfo, 619 PTRIN(args->arg.buf), sizeof(linux_seminfo)); 620 if (error != 0) 621 return (error); 622 /* 623 * TODO: Linux return the last assigned id, not the semmni. 624 */ 625 td->td_retval[0] = seminfo.semmni; 626 return (0); 627 case LINUX_GETALL: 628 cmd = GETALL; 629 semun.array = PTRIN(args->arg.array); 630 break; 631 case LINUX_SETALL: 632 cmd = SETALL; 633 semun.array = PTRIN(args->arg.array); 634 break; 635 default: 636 linux_msg(td, "ipc type %d is not implemented", 637 args->cmd & ~LINUX_IPC_64); 638 return (EINVAL); 639 } 640 return (kern_semctl(td, args->semid, args->semnum, cmd, &semun, 641 td->td_retval)); 642 } 643 644 int 645 linux_msgsnd(struct thread *td, struct linux_msgsnd_args *args) 646 { 647 const void *msgp; 648 long mtype; 649 l_long lmtype; 650 int error; 651 652 if ((l_long)args->msgsz < 0 || args->msgsz > (l_long)msginfo.msgmax) 653 return (EINVAL); 654 msgp = PTRIN(args->msgp); 655 if ((error = copyin(msgp, &lmtype, sizeof(lmtype))) != 0) 656 return (error); 657 mtype = (long)lmtype; 658 return (kern_msgsnd(td, args->msqid, 659 (const char *)msgp + sizeof(lmtype), 660 args->msgsz, args->msgflg, mtype)); 661 } 662 663 int 664 linux_msgrcv(struct thread *td, struct linux_msgrcv_args *args) 665 { 666 void *msgp; 667 long mtype; 668 l_long lmtype; 669 int error; 670 671 if ((l_long)args->msgsz < 0 || args->msgsz > (l_long)msginfo.msgmax) 672 return (EINVAL); 673 msgp = PTRIN(args->msgp); 674 if ((error = kern_msgrcv(td, args->msqid, 675 (char *)msgp + sizeof(lmtype), args->msgsz, 676 args->msgtyp, args->msgflg, &mtype)) != 0) 677 return (error); 678 lmtype = (l_long)mtype; 679 return (copyout(&lmtype, msgp, sizeof(lmtype))); 680 } 681 682 int 683 linux_msgget(struct thread *td, struct linux_msgget_args *args) 684 { 685 struct msgget_args bsd_args = { 686 .key = args->key, 687 .msgflg = args->msgflg 688 }; 689 690 return (sys_msgget(td, &bsd_args)); 691 } 692 693 int 694 linux_msgctl(struct thread *td, struct linux_msgctl_args *args) 695 { 696 int error, bsd_cmd; 697 struct l_msqid64_ds linux_msqid64; 698 struct msqid_ds bsd_msqid; 699 700 memset(&linux_msqid64, 0, sizeof(linux_msqid64)); 701 702 bsd_cmd = args->cmd & ~LINUX_IPC_64; 703 switch (bsd_cmd) { 704 case LINUX_IPC_INFO: 705 case LINUX_MSG_INFO: { 706 struct l_msginfo linux_msginfo; 707 708 memset(&linux_msginfo, 0, sizeof(linux_msginfo)); 709 /* 710 * XXX MSG_INFO uses the same data structure but returns different 711 * dynamic counters in msgpool, msgmap, and msgtql fields. 712 */ 713 linux_msginfo.msgpool = (long)msginfo.msgmni * 714 (long)msginfo.msgmnb / 1024L; /* XXX MSG_INFO. */ 715 linux_msginfo.msgmap = msginfo.msgmnb; /* XXX MSG_INFO. */ 716 linux_msginfo.msgmax = msginfo.msgmax; 717 linux_msginfo.msgmnb = msginfo.msgmnb; 718 linux_msginfo.msgmni = msginfo.msgmni; 719 linux_msginfo.msgssz = msginfo.msgssz; 720 linux_msginfo.msgtql = msginfo.msgtql; /* XXX MSG_INFO. */ 721 linux_msginfo.msgseg = msginfo.msgseg; 722 error = copyout(&linux_msginfo, PTRIN(args->buf), 723 sizeof(linux_msginfo)); 724 if (error == 0) 725 td->td_retval[0] = msginfo.msgmni; /* XXX */ 726 727 return (error); 728 } 729 730 /* 731 * TODO: implement this 732 * case LINUX_MSG_STAT: 733 */ 734 case LINUX_IPC_STAT: 735 /* NOTHING */ 736 break; 737 738 case LINUX_IPC_SET: 739 error = linux_msqid_pullup(args->cmd & LINUX_IPC_64, 740 &linux_msqid64, PTRIN(args->buf)); 741 if (error != 0) 742 return (error); 743 linux_to_bsd_msqid_ds(&linux_msqid64, &bsd_msqid); 744 break; 745 746 case LINUX_IPC_RMID: 747 /* NOTHING */ 748 break; 749 750 default: 751 return (EINVAL); 752 break; 753 } 754 755 error = kern_msgctl(td, args->msqid, bsd_cmd, &bsd_msqid); 756 if (error != 0) { 757 if (bsd_cmd == LINUX_IPC_RMID && error == EACCES) 758 return (EPERM); 759 if (bsd_cmd != LINUX_IPC_RMID || error != EINVAL) 760 return (error); 761 } 762 763 if (bsd_cmd == LINUX_IPC_STAT) { 764 bsd_to_linux_msqid_ds(&bsd_msqid, &linux_msqid64); 765 return (linux_msqid_pushdown(args->cmd & LINUX_IPC_64, 766 &linux_msqid64, PTRIN(args->buf))); 767 } 768 769 return (0); 770 } 771 772 int 773 linux_shmat(struct thread *td, struct linux_shmat_args *args) 774 { 775 struct shmat_args bsd_args = { 776 .shmid = args->shmid, 777 .shmaddr = PTRIN(args->shmaddr), 778 .shmflg = args->shmflg 779 }; 780 781 return (sys_shmat(td, &bsd_args)); 782 } 783 784 int 785 linux_shmdt(struct thread *td, struct linux_shmdt_args *args) 786 { 787 struct shmdt_args bsd_args = { 788 .shmaddr = PTRIN(args->shmaddr) 789 }; 790 791 return (sys_shmdt(td, &bsd_args)); 792 } 793 794 int 795 linux_shmget(struct thread *td, struct linux_shmget_args *args) 796 { 797 struct shmget_args bsd_args = { 798 .key = args->key, 799 .size = args->size, 800 .shmflg = args->shmflg 801 }; 802 803 return (sys_shmget(td, &bsd_args)); 804 } 805 806 int 807 linux_shmctl(struct thread *td, struct linux_shmctl_args *args) 808 { 809 struct l_shmid64_ds linux_shmid64; 810 struct l_shminfo64 linux_shminfo64; 811 struct l_shm_info linux_shm_info; 812 struct shmid_ds bsd_shmid; 813 int error; 814 815 memset(&linux_shm_info, 0, sizeof(linux_shm_info)); 816 memset(&linux_shmid64, 0, sizeof(linux_shmid64)); 817 memset(&linux_shminfo64, 0, sizeof(linux_shminfo64)); 818 819 switch (args->cmd & ~LINUX_IPC_64) { 820 case LINUX_IPC_INFO: { 821 struct shminfo bsd_shminfo; 822 823 /* Perform shmctl wanting removed segments lookup */ 824 error = kern_shmctl(td, args->shmid, IPC_INFO, 825 (void *)&bsd_shminfo, NULL); 826 if (error != 0) 827 return (error); 828 829 bsd_to_linux_shminfo(&bsd_shminfo, &linux_shminfo64); 830 831 return (linux_shminfo_pushdown(args->cmd & LINUX_IPC_64, 832 &linux_shminfo64, PTRIN(args->buf))); 833 } 834 835 case LINUX_SHM_INFO: { 836 struct shm_info bsd_shm_info; 837 838 /* Perform shmctl wanting removed segments lookup */ 839 error = kern_shmctl(td, args->shmid, SHM_INFO, 840 (void *)&bsd_shm_info, NULL); 841 if (error != 0) 842 return (error); 843 844 bsd_to_linux_shm_info(&bsd_shm_info, &linux_shm_info); 845 846 return (copyout(&linux_shm_info, PTRIN(args->buf), 847 sizeof(struct l_shm_info))); 848 } 849 850 case LINUX_IPC_STAT: 851 /* Perform shmctl wanting removed segments lookup */ 852 error = kern_shmctl(td, args->shmid, IPC_STAT, 853 (void *)&bsd_shmid, NULL); 854 if (error != 0) 855 return (error); 856 857 bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid64); 858 859 return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64, 860 &linux_shmid64, PTRIN(args->buf))); 861 862 case LINUX_SHM_STAT: 863 /* Perform shmctl wanting removed segments lookup */ 864 error = kern_shmctl(td, args->shmid, IPC_STAT, 865 (void *)&bsd_shmid, NULL); 866 if (error != 0) 867 return (error); 868 869 bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid64); 870 871 return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64, 872 &linux_shmid64, PTRIN(args->buf))); 873 874 case LINUX_IPC_SET: 875 error = linux_shmid_pullup(args->cmd & LINUX_IPC_64, 876 &linux_shmid64, PTRIN(args->buf)); 877 if (error != 0) 878 return (error); 879 880 linux_to_bsd_shmid_ds(&linux_shmid64, &bsd_shmid); 881 882 /* Perform shmctl wanting removed segments lookup */ 883 return (kern_shmctl(td, args->shmid, IPC_SET, 884 (void *)&bsd_shmid, NULL)); 885 886 case LINUX_IPC_RMID: { 887 void *buf; 888 889 if (args->buf == 0) 890 buf = NULL; 891 else { 892 error = linux_shmid_pullup(args->cmd & LINUX_IPC_64, 893 &linux_shmid64, PTRIN(args->buf)); 894 if (error != 0) 895 return (error); 896 linux_to_bsd_shmid_ds(&linux_shmid64, &bsd_shmid); 897 buf = (void *)&bsd_shmid; 898 } 899 return (kern_shmctl(td, args->shmid, IPC_RMID, buf, NULL)); 900 } 901 902 case LINUX_SHM_LOCK: 903 /* FALLTHROUGH */ 904 case LINUX_SHM_UNLOCK: 905 /* FALLTHROUGH */ 906 default: 907 linux_msg(td, "ipc type %d not implemented", 908 args->cmd & ~LINUX_IPC_64); 909 return (EINVAL); 910 } 911 } 912 913 MODULE_DEPEND(linux, sysvmsg, 1, 1, 1); 914 MODULE_DEPEND(linux, sysvsem, 1, 1, 1); 915 MODULE_DEPEND(linux, sysvshm, 1, 1, 1); 916