1 /* $NetBSD: linux_ipc.c,v 1.33 2006/02/09 19:18:56 manu Exp $ */ 2 3 /*- 4 * Copyright (c) 1995, 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Frank van der Linden and Eric Haszlakiewicz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: linux_ipc.c,v 1.33 2006/02/09 19:18:56 manu Exp $"); 41 42 #if defined(_KERNEL_OPT) 43 #include "opt_sysv.h" 44 #endif 45 46 #include <sys/param.h> 47 #include <sys/shm.h> 48 #include <sys/sem.h> 49 #include <sys/msg.h> 50 #include <sys/proc.h> 51 #include <sys/systm.h> 52 53 #include <sys/mount.h> 54 #include <sys/sa.h> 55 #include <sys/syscallargs.h> 56 57 #include <compat/linux/common/linux_types.h> 58 #include <compat/linux/common/linux_signal.h> 59 #include <compat/linux/common/linux_util.h> 60 #include <compat/linux/common/linux_ipc.h> 61 #include <compat/linux/common/linux_msg.h> 62 #include <compat/linux/common/linux_shm.h> 63 #include <compat/linux/common/linux_sem.h> 64 #include <compat/linux/common/linux_ipccall.h> 65 66 #include <compat/linux/linux_syscallargs.h> 67 #include <compat/linux/linux_syscall.h> 68 69 /* 70 * Note: Not all linux architechtures have explicit versions 71 * of the SYSV* syscalls. On the ones that don't 72 * we pretend that they are defined anyway. *_args and 73 * prototypes are defined in individual headers; 74 * syscalls.master lists those syscalls as NOARGS. 75 * 76 * The functions in multiarch are the ones that just need 77 * the arguments shuffled around and then use the 78 * normal NetBSD syscall. 79 * 80 * Function in multiarch: 81 * linux_sys_ipc : linux_ipccall.c 82 * liunx_semop : linux_ipccall.c 83 * linux_semget : linux_ipccall.c 84 * linux_msgsnd : linux_ipccall.c 85 * linux_msgrcv : linux_ipccall.c 86 * linux_msgget : linux_ipccall.c 87 * linux_shmdt : linux_ipccall.c 88 * linux_shmget : linux_ipccall.c 89 */ 90 91 #if defined (SYSVSEM) || defined(SYSVSHM) || defined(SYSVMSG) 92 /* 93 * Convert between Linux and NetBSD ipc_perm structures. Only the 94 * order of the fields is different. 95 */ 96 void 97 linux_to_bsd_ipc_perm(lpp, bpp) 98 struct linux_ipc_perm *lpp; 99 struct ipc_perm *bpp; 100 { 101 102 bpp->_key = lpp->l_key; 103 bpp->uid = lpp->l_uid; 104 bpp->gid = lpp->l_gid; 105 bpp->cuid = lpp->l_cuid; 106 bpp->cgid = lpp->l_cgid; 107 bpp->mode = lpp->l_mode; 108 bpp->_seq = lpp->l_seq; 109 } 110 111 void 112 linux_to_bsd_ipc64_perm(lpp, bpp) 113 struct linux_ipc64_perm *lpp; 114 struct ipc_perm *bpp; 115 { 116 bpp->_key = lpp->l_key; 117 bpp->uid = lpp->l_uid; 118 bpp->gid = lpp->l_gid; 119 bpp->cuid = lpp->l_cuid; 120 bpp->cgid = lpp->l_cgid; 121 bpp->mode = lpp->l_mode; 122 bpp->_seq = lpp->l_seq; 123 } 124 125 void 126 bsd_to_linux_ipc_perm(bpp, lpp) 127 struct ipc_perm *bpp; 128 struct linux_ipc_perm *lpp; 129 { 130 131 lpp->l_key = bpp->_key; 132 lpp->l_uid = bpp->uid; 133 lpp->l_gid = bpp->gid; 134 lpp->l_cuid = bpp->cuid; 135 lpp->l_cgid = bpp->cgid; 136 lpp->l_mode = bpp->mode; 137 lpp->l_seq = bpp->_seq; 138 } 139 140 void 141 bsd_to_linux_ipc64_perm(bpp, lpp) 142 struct ipc_perm *bpp; 143 struct linux_ipc64_perm *lpp; 144 { 145 lpp->l_key = bpp->_key; 146 lpp->l_uid = bpp->uid; 147 lpp->l_gid = bpp->gid; 148 lpp->l_cuid = bpp->cuid; 149 lpp->l_cgid = bpp->cgid; 150 lpp->l_mode = bpp->mode; 151 lpp->l_seq = bpp->_seq; 152 } 153 154 #endif 155 156 #ifdef SYSVSEM 157 /* 158 * Semaphore operations. Most constants and structures are the same on 159 * both systems. Only semctl() needs some extra work. 160 */ 161 162 /* 163 * Convert between Linux and NetBSD semid_ds structures. 164 */ 165 void 166 bsd_to_linux_semid_ds(bs, ls) 167 struct semid_ds *bs; 168 struct linux_semid_ds *ls; 169 { 170 171 bsd_to_linux_ipc_perm(&bs->sem_perm, &ls->l_sem_perm); 172 ls->l_sem_otime = bs->sem_otime; 173 ls->l_sem_ctime = bs->sem_ctime; 174 ls->l_sem_nsems = bs->sem_nsems; 175 ls->l_sem_base = bs->_sem_base; 176 } 177 178 void 179 linux_to_bsd_semid_ds(ls, bs) 180 struct linux_semid_ds *ls; 181 struct semid_ds *bs; 182 { 183 184 linux_to_bsd_ipc_perm(&ls->l_sem_perm, &bs->sem_perm); 185 bs->sem_otime = ls->l_sem_otime; 186 bs->sem_ctime = ls->l_sem_ctime; 187 bs->sem_nsems = ls->l_sem_nsems; 188 bs->_sem_base = ls->l_sem_base; 189 } 190 191 /* 192 * Most of this can be handled by directly passing the arguments on; we 193 * just need to frob the `cmd' and convert the semid_ds and semun. 194 */ 195 int 196 linux_sys_semctl(l, v, retval) 197 struct lwp *l; 198 void *v; 199 register_t *retval; 200 { 201 struct linux_sys_semctl_args /* { 202 syscallarg(int) semid; 203 syscallarg(int) semnum; 204 syscallarg(int) cmd; 205 syscallarg(union linux_semun) arg; 206 } */ *uap = v; 207 struct proc *p = l->l_proc; 208 struct semid_ds sembuf; 209 struct linux_semid_ds lsembuf; 210 union __semun semun; 211 int cmd, error; 212 void *pass_arg = NULL; 213 214 cmd = SCARG(uap, cmd); 215 216 switch (cmd) { 217 case LINUX_IPC_SET: 218 pass_arg = &sembuf; 219 cmd = IPC_SET; 220 break; 221 222 case LINUX_IPC_STAT: 223 pass_arg = &sembuf; 224 cmd = IPC_STAT; 225 break; 226 227 case LINUX_IPC_RMID: 228 cmd = IPC_RMID; 229 break; 230 231 case LINUX_GETVAL: 232 cmd = GETVAL; 233 break; 234 235 case LINUX_GETPID: 236 cmd = GETPID; 237 break; 238 239 case LINUX_GETNCNT: 240 cmd = GETNCNT; 241 break; 242 243 case LINUX_GETZCNT: 244 cmd = GETZCNT; 245 break; 246 247 case LINUX_GETALL: 248 pass_arg = &semun; 249 semun.array = SCARG(uap, arg).l_array; 250 cmd = GETALL; 251 break; 252 253 case LINUX_SETVAL: 254 pass_arg = &semun; 255 semun.val = SCARG(uap, arg).l_val; 256 cmd = SETVAL; 257 break; 258 259 case LINUX_SETALL: 260 pass_arg = &semun; 261 semun.array = SCARG(uap, arg).l_array; 262 cmd = SETALL; 263 break; 264 265 default: 266 return (EINVAL); 267 } 268 269 if (cmd == IPC_SET) { 270 error = copyin(SCARG(uap, arg).l_buf, &lsembuf, 271 sizeof(lsembuf)); 272 if (error) 273 return (error); 274 linux_to_bsd_semid_ds(&lsembuf, &sembuf); 275 } 276 277 error = semctl1(p, SCARG(uap, semid), SCARG(uap, semnum), cmd, 278 pass_arg, retval); 279 280 if (error == 0 && cmd == IPC_STAT) { 281 bsd_to_linux_semid_ds(&sembuf, &lsembuf); 282 error = copyout(&lsembuf, SCARG(uap, arg).l_buf, 283 sizeof(lsembuf)); 284 } 285 286 return (error); 287 } 288 #endif /* SYSVSEM */ 289 290 #ifdef SYSVMSG 291 292 void 293 linux_to_bsd_msqid_ds(lmp, bmp) 294 struct linux_msqid_ds *lmp; 295 struct msqid_ds *bmp; 296 { 297 298 linux_to_bsd_ipc_perm(&lmp->l_msg_perm, &bmp->msg_perm); 299 bmp->_msg_first = lmp->l_msg_first; 300 bmp->_msg_last = lmp->l_msg_last; 301 bmp->_msg_cbytes = lmp->l_msg_cbytes; 302 bmp->msg_qnum = lmp->l_msg_qnum; 303 bmp->msg_qbytes = lmp->l_msg_qbytes; 304 bmp->msg_lspid = lmp->l_msg_lspid; 305 bmp->msg_lrpid = lmp->l_msg_lrpid; 306 bmp->msg_stime = lmp->l_msg_stime; 307 bmp->msg_rtime = lmp->l_msg_rtime; 308 bmp->msg_ctime = lmp->l_msg_ctime; 309 } 310 311 void 312 bsd_to_linux_msqid_ds(bmp, lmp) 313 struct msqid_ds *bmp; 314 struct linux_msqid_ds *lmp; 315 { 316 317 bsd_to_linux_ipc_perm(&bmp->msg_perm, &lmp->l_msg_perm); 318 lmp->l_msg_first = bmp->_msg_first; 319 lmp->l_msg_last = bmp->_msg_last; 320 lmp->l_msg_cbytes = bmp->_msg_cbytes; 321 lmp->l_msg_qnum = bmp->msg_qnum; 322 lmp->l_msg_qbytes = bmp->msg_qbytes; 323 lmp->l_msg_lspid = bmp->msg_lspid; 324 lmp->l_msg_lrpid = bmp->msg_lrpid; 325 lmp->l_msg_stime = bmp->msg_stime; 326 lmp->l_msg_rtime = bmp->msg_rtime; 327 lmp->l_msg_ctime = bmp->msg_ctime; 328 } 329 330 int 331 linux_sys_msgctl(l, v, retval) 332 struct lwp *l; 333 void *v; 334 register_t *retval; 335 { 336 struct linux_sys_msgctl_args /* { 337 syscallarg(int) msqid; 338 syscallarg(int) cmd; 339 syscallarg(struct linux_msqid_ds *) buf; 340 } */ *uap = v; 341 struct proc *p = l->l_proc; 342 caddr_t sg; 343 struct sys___msgctl13_args nua; 344 struct msqid_ds *bmp, bm; 345 struct linux_msqid_ds lm; 346 int error; 347 348 SCARG(&nua, msqid) = SCARG(uap, msqid); 349 switch (SCARG(uap, cmd)) { 350 case LINUX_IPC_STAT: 351 sg = stackgap_init(p, 0); 352 bmp = stackgap_alloc(p, &sg, sizeof (struct msqid_ds)); 353 SCARG(&nua, cmd) = IPC_STAT; 354 SCARG(&nua, buf) = bmp; 355 if ((error = sys___msgctl13(l, &nua, retval))) 356 return error; 357 if ((error = copyin(bmp, &bm, sizeof bm))) 358 return error; 359 bsd_to_linux_msqid_ds(&bm, &lm); 360 return copyout(&lm, SCARG(uap, buf), sizeof lm); 361 case LINUX_IPC_SET: 362 if ((error = copyin(SCARG(uap, buf), &lm, sizeof lm))) 363 return error; 364 linux_to_bsd_msqid_ds(&lm, &bm); 365 sg = stackgap_init(p, 0); 366 bmp = stackgap_alloc(p, &sg, sizeof bm); 367 if ((error = copyout(&bm, bmp, sizeof bm))) 368 return error; 369 SCARG(&nua, cmd) = IPC_SET; 370 SCARG(&nua, buf) = bmp; 371 break; 372 case LINUX_IPC_RMID: 373 SCARG(&nua, cmd) = IPC_RMID; 374 SCARG(&nua, buf) = NULL; 375 break; 376 default: 377 return EINVAL; 378 } 379 return sys___msgctl13(l, &nua, retval); 380 } 381 #endif /* SYSVMSG */ 382 383 #ifdef SYSVSHM 384 /* 385 * shmget(2). Just make sure the Linux-compatible shmat() semantics 386 * is enabled for the segment, so that shmat() succeeds even when 387 * the segment would be removed. 388 */ 389 int 390 linux_sys_shmget(l, v, retval) 391 struct lwp *l; 392 void *v; 393 register_t *retval; 394 { 395 struct sys_shmget_args /* { 396 syscallarg(key_t) key; 397 syscallarg(size_t) size; 398 syscallarg(int) shmflg; 399 } */ *uap = v; 400 401 SCARG(uap, shmflg) |= _SHM_RMLINGER; 402 return sys_shmget(l, uap, retval); 403 } 404 405 /* 406 * shmat(2). Very straightforward, except that Linux passes a pointer 407 * in which the return value is to be passed. This is subsequently 408 * handled by libc, apparently. 409 */ 410 int 411 linux_sys_shmat(l, v, retval) 412 struct lwp *l; 413 void *v; 414 register_t *retval; 415 { 416 struct linux_sys_shmat_args /* { 417 syscallarg(int) shmid; 418 syscallarg(void *) shmaddr; 419 syscallarg(int) shmflg; 420 syscallarg(u_long *) raddr; 421 } */ *uap = v; 422 int error; 423 424 if ((error = sys_shmat(l, uap, retval))) 425 return error; 426 427 if ((error = copyout(&retval[0], (caddr_t) SCARG(uap, raddr), 428 sizeof retval[0]))) 429 return error; 430 431 retval[0] = 0; 432 return 0; 433 } 434 435 /* 436 * Convert between Linux and NetBSD shmid_ds structures. 437 * The order of the fields is once again the difference, and 438 * we also need a place to store the internal data pointer 439 * in, which is unfortunately stored in this structure. 440 * 441 * We abuse a Linux internal field for that. 442 */ 443 void 444 linux_to_bsd_shmid_ds(lsp, bsp) 445 struct linux_shmid_ds *lsp; 446 struct shmid_ds *bsp; 447 { 448 449 linux_to_bsd_ipc_perm(&lsp->l_shm_perm, &bsp->shm_perm); 450 bsp->shm_segsz = lsp->l_shm_segsz; 451 bsp->shm_lpid = lsp->l_shm_lpid; 452 bsp->shm_cpid = lsp->l_shm_cpid; 453 bsp->shm_nattch = lsp->l_shm_nattch; 454 bsp->shm_atime = lsp->l_shm_atime; 455 bsp->shm_dtime = lsp->l_shm_dtime; 456 bsp->shm_ctime = lsp->l_shm_ctime; 457 bsp->_shm_internal = lsp->l_private2; /* XXX Oh well. */ 458 } 459 460 void 461 linux_to_bsd_shmid64_ds(lsp, bsp) 462 struct linux_shmid64_ds *lsp; 463 struct shmid_ds *bsp; 464 { 465 466 linux_to_bsd_ipc64_perm(&lsp->l_shm_perm, &bsp->shm_perm); 467 bsp->shm_segsz = lsp->l_shm_segsz; 468 bsp->shm_lpid = lsp->l_shm_lpid; 469 bsp->shm_cpid = lsp->l_shm_cpid; 470 bsp->shm_nattch = lsp->l_shm_nattch; 471 bsp->shm_atime = lsp->l_shm_atime; 472 bsp->shm_dtime = lsp->l_shm_dtime; 473 bsp->shm_ctime = lsp->l_shm_ctime; 474 bsp->_shm_internal = (void*)lsp->l___unused5; /* XXX Oh well. */ 475 } 476 477 void 478 bsd_to_linux_shmid_ds(bsp, lsp) 479 struct shmid_ds *bsp; 480 struct linux_shmid_ds *lsp; 481 { 482 483 bsd_to_linux_ipc_perm(&bsp->shm_perm, &lsp->l_shm_perm); 484 lsp->l_shm_segsz = bsp->shm_segsz; 485 lsp->l_shm_lpid = bsp->shm_lpid; 486 lsp->l_shm_cpid = bsp->shm_cpid; 487 lsp->l_shm_nattch = bsp->shm_nattch; 488 lsp->l_shm_atime = bsp->shm_atime; 489 lsp->l_shm_dtime = bsp->shm_dtime; 490 lsp->l_shm_ctime = bsp->shm_ctime; 491 lsp->l_private2 = bsp->_shm_internal; /* XXX */ 492 } 493 494 void 495 bsd_to_linux_shmid64_ds(bsp, lsp) 496 struct shmid_ds *bsp; 497 struct linux_shmid64_ds *lsp; 498 { 499 bsd_to_linux_ipc64_perm(&bsp->shm_perm, &lsp->l_shm_perm); 500 lsp->l_shm_segsz = bsp->shm_segsz; 501 lsp->l_shm_lpid = bsp->shm_lpid; 502 lsp->l_shm_cpid = bsp->shm_cpid; 503 lsp->l_shm_nattch = bsp->shm_nattch; 504 lsp->l_shm_atime = bsp->shm_atime; 505 lsp->l_shm_dtime = bsp->shm_dtime; 506 lsp->l_shm_ctime = bsp->shm_ctime; 507 lsp->l___unused5 = (u_long)bsp->_shm_internal; /* XXX */ 508 } 509 510 /* 511 * shmctl.SHM_LOCK and SHM_UNLOCK are passed on, but currently not implemented 512 * by NetBSD itself. 513 * 514 * The usual structure conversion and massaging is done. 515 */ 516 int 517 linux_sys_shmctl(l, v, retval) 518 struct lwp *l; 519 void *v; 520 register_t *retval; 521 { 522 struct linux_sys_shmctl_args /* { 523 syscallarg(int) shmid; 524 syscallarg(int) cmd; 525 syscallarg(struct linux_shmid_ds *) buf; 526 } */ *uap = v; 527 struct proc *p = l->l_proc; 528 caddr_t sg; 529 struct sys___shmctl13_args nua; 530 struct shmid_ds *bsp, bs; 531 struct linux_shmid_ds ls; 532 struct linux_shmid64_ds ls64; 533 struct linux_shminfo64 lsi64; 534 struct linux_shm_info lsi; 535 int error, i, cmd; 536 537 SCARG(&nua, shmid) = SCARG(uap, shmid); 538 cmd = SCARG(uap, cmd); 539 switch (cmd) { 540 case LINUX_IPC_STAT: 541 case LINUX_SHM_STAT: 542 sg = stackgap_init(p, 0); 543 bsp = stackgap_alloc(p, &sg, sizeof(struct shmid_ds)); 544 SCARG(&nua, cmd) = IPC_STAT; 545 SCARG(&nua, buf) = bsp; 546 if ((error = sys___shmctl13(l, &nua, retval))) 547 return error; 548 if ((error = copyin(SCARG(&nua, buf), &bs, sizeof bs))) 549 return error; 550 bsd_to_linux_shmid_ds(&bs, &ls); 551 if (cmd == LINUX_SHM_STAT) 552 retval[0] = IXSEQ_TO_IPCID(bs.shm_perm._key, 553 bs.shm_perm); 554 return copyout(&ls, SCARG(uap, buf), sizeof ls); 555 556 case LINUX_IPC_STAT|LINUX_IPC_64: 557 case LINUX_SHM_STAT|LINUX_IPC_64: 558 sg = stackgap_init(p,0); 559 bsp = stackgap_alloc(p, &sg, sizeof(struct linux_shmid64_ds)); 560 SCARG(&nua, cmd) = IPC_STAT; 561 SCARG(&nua, buf) = bsp; 562 if ((error = sys___shmctl13(l, &nua, retval))) 563 return error; 564 if ((error = copyin(SCARG(&nua, buf), &bs, sizeof bs))) 565 return error; 566 bsd_to_linux_shmid64_ds(&bs, &ls64); 567 if (cmd == (LINUX_SHM_STAT|LINUX_IPC_64)) { 568 retval[0] = IXSEQ_TO_IPCID(bs.shm_perm._key, 569 bs.shm_perm); 570 } 571 return copyout(&ls64, SCARG(uap, buf), sizeof ls64); 572 573 case LINUX_IPC_SET: 574 if ((error = copyin(SCARG(uap, buf), &ls, sizeof ls))) 575 return error; 576 linux_to_bsd_shmid_ds(&ls, &bs); 577 sg = stackgap_init(p, 0); 578 bsp = stackgap_alloc(p, &sg, sizeof bs); 579 if ((error = copyout(&bs, bsp, sizeof bs))) 580 return error; 581 SCARG(&nua, cmd) = IPC_SET; 582 SCARG(&nua, buf) = bsp; 583 break; 584 585 case LINUX_IPC_RMID: 586 SCARG(&nua, cmd) = IPC_RMID; 587 SCARG(&nua, buf) = NULL; 588 break; 589 590 case LINUX_SHM_LOCK: 591 SCARG(&nua, cmd) = SHM_LOCK; 592 SCARG(&nua, buf) = NULL; 593 break; 594 595 case LINUX_SHM_UNLOCK: 596 SCARG(&nua, cmd) = SHM_UNLOCK; 597 SCARG(&nua, buf) = NULL; 598 break; 599 600 case LINUX_IPC_INFO: 601 memset(&lsi64, 0, sizeof lsi64); 602 lsi64.l_shmmax = shminfo.shmmax; 603 lsi64.l_shmmin = shminfo.shmmin; 604 lsi64.l_shmmni = shminfo.shmmni; 605 lsi64.l_shmseg = shminfo.shmseg; 606 lsi64.l_shmall = shminfo.shmall; 607 return copyout(&lsi64, SCARG(uap, buf), sizeof lsi64); 608 609 case LINUX_SHM_INFO: 610 (void)memset(&lsi, 0, sizeof lsi); 611 lsi.l_used_ids = shm_nused; 612 for (i = 0; i < shminfo.shmmni; i++) 613 if (shmsegs[i].shm_perm.mode & SHMSEG_ALLOCATED) 614 lsi.l_shm_tot += shmsegs[i].shm_segsz; 615 lsi.l_shm_rss = 0; 616 lsi.l_shm_swp = 0; 617 lsi.l_swap_attempts = 0; 618 lsi.l_swap_successes = 0; 619 return copyout(&lsi, SCARG(uap, buf), sizeof lsi); 620 621 default: 622 #ifdef DEBUG 623 printf("linux_sys_shmctl cmd %d\n", SCARG(uap, cmd)); 624 #endif 625 return EINVAL; 626 } 627 return sys___shmctl13(l, &nua, retval); 628 } 629 #endif /* SYSVSHM */ 630