svr4_ipc.c revision 148541
190075Sobrien/*- 290075Sobrien * Copyright (c) 1995 The NetBSD Foundation, Inc. 390075Sobrien * All rights reserved. 490075Sobrien * 590075Sobrien * This code is derived from software contributed to The NetBSD Foundation 690075Sobrien * by Christos Zoulas. 790075Sobrien * 890075Sobrien * Redistribution and use in source and binary forms, with or without 990075Sobrien * modification, are permitted provided that the following conditions 1090075Sobrien * are met: 1190075Sobrien * 1. Redistributions of source code must retain the above copyright 1290075Sobrien * notice, this list of conditions and the following disclaimer. 1390075Sobrien * 2. Redistributions in binary form must reproduce the above copyright 1490075Sobrien * notice, this list of conditions and the following disclaimer in the 1590075Sobrien * documentation and/or other materials provided with the distribution. 1690075Sobrien * 3. All advertising materials mentioning features or use of this software 1790075Sobrien * must display the following acknowledgement: 1890075Sobrien * This product includes software developed by the NetBSD 1990075Sobrien * Foundation, Inc. and its contributors. 2090075Sobrien * 4. Neither the name of The NetBSD Foundation nor the names of its 2190075Sobrien * contributors may be used to endorse or promote products derived 2290075Sobrien * from this software without specific prior written permission. 2390075Sobrien * 2490075Sobrien * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 2590075Sobrien * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 2690075Sobrien * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 2790075Sobrien * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 2890075Sobrien * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 2990075Sobrien * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 3090075Sobrien * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 3190075Sobrien * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32169689Skan * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 33169689Skan * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34169689Skan * POSSIBILITY OF SUCH DAMAGE. 3590075Sobrien */ 3690075Sobrien/*- 3790075Sobrien * Portions of this code have been derived from software contributed 38 * to the FreeBSD Project by Mark Newton. 39 * 40 * Copyright (c) 1999 Mark Newton 41 * All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. The name of the author may not be used to endorse or promote products 52 * derived from this software without specific prior written permission 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 55 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 56 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 57 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 58 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 59 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 60 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 61 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 62 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 63 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 64 * 65 * XXX- This code is presently a no-op on FreeBSD (and isn't compiled due 66 * to preprocessor conditionals). A nice project for a kernel hacking 67 * novice might be to MakeItGo, but I have more important fish to fry 68 * at present. 69 * 70 * Derived from: $NetBSD: svr4_ipc.c,v 1.7 1998/10/19 22:43:00 tron Exp $ 71 */ 72 73#include <sys/cdefs.h> 74__FBSDID("$FreeBSD: head/sys/compat/svr4/svr4_ipc.c 148541 2005-07-29 19:41:04Z jhb $"); 75 76#include "opt_sysvipc.h" 77 78#include <sys/param.h> 79#include <sys/ipc.h> 80#include <sys/msg.h> 81#include <sys/proc.h> 82#include <sys/sem.h> 83#include <sys/shm.h> 84#include <sys/syscallsubr.h> 85#include <sys/sysproto.h> 86#include <sys/systm.h> 87#include <sys/time.h> 88 89#include <compat/svr4/svr4.h> 90#include <compat/svr4/svr4_types.h> 91#include <compat/svr4/svr4_signal.h> 92#include <compat/svr4/svr4_proto.h> 93#include <compat/svr4/svr4_util.h> 94#include <compat/svr4/svr4_ipc.h> 95 96#if defined(SYSVMSG) || defined(SYSVSHM) || defined(SYSVSEM) 97static void svr4_to_bsd_ipc_perm(const struct svr4_ipc_perm *, 98 struct ipc_perm *); 99static void bsd_to_svr4_ipc_perm(const struct ipc_perm *, 100 struct svr4_ipc_perm *); 101#endif 102 103#ifdef SYSVSEM 104static void bsd_to_svr4_semid_ds(const struct semid_ds *, 105 struct svr4_semid_ds *); 106static void svr4_to_bsd_semid_ds(const struct svr4_semid_ds *, 107 struct semid_ds *); 108static int svr4_setsemun(caddr_t *sgp, union semun **argp, 109 union semun *usp); 110static int svr4_semop(struct thread *, void *); 111static int svr4_semget(struct thread *, void *); 112static int svr4_semctl(struct thread *, void *); 113#endif 114 115#ifdef SYSVMSG 116static void bsd_to_svr4_msqid_ds(const struct msqid_ds *, 117 struct svr4_msqid_ds *); 118static void svr4_to_bsd_msqid_ds(const struct svr4_msqid_ds *, 119 struct msqid_ds *); 120static int svr4_msgsnd(struct thread *, void *); 121static int svr4_msgrcv(struct thread *, void *); 122static int svr4_msgget(struct thread *, void *); 123static int svr4_msgctl(struct thread *, void *); 124#endif 125 126#ifdef SYSVSHM 127static void bsd_to_svr4_shmid_ds(const struct shmid_ds *, 128 struct svr4_shmid_ds *); 129static void svr4_to_bsd_shmid_ds(const struct svr4_shmid_ds *, 130 struct shmid_ds *); 131static int svr4_shmat(struct thread *, void *); 132static int svr4_shmdt(struct thread *, void *); 133static int svr4_shmget(struct thread *, void *); 134static int svr4_shmctl(struct thread *, void *); 135#endif 136 137#if defined(SYSVMSG) || defined(SYSVSHM) || defined(SYSVSEM) 138 139static void 140svr4_to_bsd_ipc_perm(spp, bpp) 141 const struct svr4_ipc_perm *spp; 142 struct ipc_perm *bpp; 143{ 144 bpp->key = spp->key; 145 bpp->uid = spp->uid; 146 bpp->gid = spp->gid; 147 bpp->cuid = spp->cuid; 148 bpp->cgid = spp->cgid; 149 bpp->mode = spp->mode; 150 bpp->seq = spp->seq; 151} 152 153static void 154bsd_to_svr4_ipc_perm(bpp, spp) 155 const struct ipc_perm *bpp; 156 struct svr4_ipc_perm *spp; 157{ 158 spp->key = bpp->key; 159 spp->uid = bpp->uid; 160 spp->gid = bpp->gid; 161 spp->cuid = bpp->cuid; 162 spp->cgid = bpp->cgid; 163 spp->mode = bpp->mode; 164 spp->seq = bpp->seq; 165} 166#endif 167 168#ifdef SYSVSEM 169static void 170bsd_to_svr4_semid_ds(bds, sds) 171 const struct semid_ds *bds; 172 struct svr4_semid_ds *sds; 173{ 174 bsd_to_svr4_ipc_perm(&bds->sem_perm, &sds->sem_perm); 175 sds->sem_base = (struct svr4_sem *) bds->sem_base; 176 sds->sem_nsems = bds->sem_nsems; 177 sds->sem_otime = bds->sem_otime; 178 sds->sem_pad1 = bds->sem_pad1; 179 sds->sem_ctime = bds->sem_ctime; 180 sds->sem_pad2 = bds->sem_pad2; 181} 182 183static void 184svr4_to_bsd_semid_ds(sds, bds) 185 const struct svr4_semid_ds *sds; 186 struct semid_ds *bds; 187{ 188 svr4_to_bsd_ipc_perm(&sds->sem_perm, &bds->sem_perm); 189 bds->sem_base = (struct sem *) bds->sem_base; 190 bds->sem_nsems = sds->sem_nsems; 191 bds->sem_otime = sds->sem_otime; 192 bds->sem_pad1 = sds->sem_pad1; 193 bds->sem_ctime = sds->sem_ctime; 194 bds->sem_pad2 = sds->sem_pad2; 195} 196 197static int 198svr4_setsemun(sgp, argp, usp) 199 caddr_t *sgp; 200 union semun **argp; 201 union semun *usp; 202{ 203 *argp = stackgap_alloc(sgp, sizeof(union semun)); 204 return copyout((caddr_t)usp, *argp, sizeof(union semun)); 205} 206 207struct svr4_sys_semctl_args { 208 int what; 209 int semid; 210 int semnum; 211 int cmd; 212 union semun arg; 213}; 214 215static int 216svr4_semctl(td, v) 217 struct thread *td; 218 void *v; 219{ 220 int error; 221 struct svr4_sys_semctl_args *uap = v; 222 struct __semctl_args ap; 223 struct svr4_semid_ds ss; 224 struct semid_ds bs, *bsp; 225 caddr_t sg = stackgap_init(); 226 227 ap.semid = uap->semid; 228 ap.semnum = uap->semnum; 229 230 switch (uap->cmd) { 231 case SVR4_SEM_GETZCNT: 232 case SVR4_SEM_GETNCNT: 233 case SVR4_SEM_GETPID: 234 case SVR4_SEM_GETVAL: 235 switch (uap->cmd) { 236 case SVR4_SEM_GETZCNT: 237 ap.cmd = GETZCNT; 238 break; 239 case SVR4_SEM_GETNCNT: 240 ap.cmd = GETNCNT; 241 break; 242 case SVR4_SEM_GETPID: 243 ap.cmd = GETPID; 244 break; 245 case SVR4_SEM_GETVAL: 246 ap.cmd = GETVAL; 247 break; 248 } 249 return __semctl(td, &ap); 250 251 case SVR4_SEM_SETVAL: 252 error = svr4_setsemun(&sg, &ap.arg, &uap->arg); 253 if (error) 254 return error; 255 ap.cmd = SETVAL; 256 return __semctl(td, &ap); 257 258 case SVR4_SEM_GETALL: 259 error = svr4_setsemun(&sg, &ap.arg, &uap->arg); 260 if (error) 261 return error; 262 ap.cmd = GETVAL; 263 return __semctl(td, &ap); 264 265 case SVR4_SEM_SETALL: 266 error = svr4_setsemun(&sg, &ap.arg, &uap->arg); 267 if (error) 268 return error; 269 ap.cmd = SETVAL; 270 return __semctl(td, &ap); 271 272 case SVR4_IPC_STAT: 273 ap.cmd = IPC_STAT; 274 bsp = stackgap_alloc(&sg, sizeof(bs)); 275 error = svr4_setsemun(&sg, &ap.arg, 276 (union semun *)&bsp); 277 if (error) 278 return error; 279 if ((error = __semctl(td, &ap)) != 0) 280 return error; 281 error = copyin((caddr_t)bsp, (caddr_t)&bs, sizeof(bs)); 282 if (error) 283 return error; 284 bsd_to_svr4_semid_ds(&bs, &ss); 285 return copyout(&ss, uap->arg.buf, sizeof(ss)); 286 287 case SVR4_IPC_SET: 288 ap.cmd = IPC_SET; 289 bsp = stackgap_alloc(&sg, sizeof(bs)); 290 error = svr4_setsemun(&sg, &ap.arg, 291 (union semun *)&bsp); 292 if (error) 293 return error; 294 error = copyin(uap->arg.buf, (caddr_t) &ss, sizeof ss); 295 if (error) 296 return error; 297 svr4_to_bsd_semid_ds(&ss, &bs); 298 error = copyout(&bs, bsp, sizeof(bs)); 299 if (error) 300 return error; 301 return __semctl(td, &ap); 302 303 case SVR4_IPC_RMID: 304 ap.cmd = IPC_RMID; 305 bsp = stackgap_alloc(&sg, sizeof(bs)); 306 error = svr4_setsemun(&sg, &ap.arg, 307 (union semun *)&bsp); 308 if (error) 309 return error; 310 error = copyin(uap->arg.buf, &ss, sizeof ss); 311 if (error) 312 return error; 313 svr4_to_bsd_semid_ds(&ss, &bs); 314 error = copyout(&bs, bsp, sizeof(bs)); 315 if (error) 316 return error; 317 return __semctl(td, &ap); 318 319 default: 320 return EINVAL; 321 } 322} 323 324struct svr4_sys_semget_args { 325 int what; 326 svr4_key_t key; 327 int nsems; 328 int semflg; 329}; 330 331static int 332svr4_semget(td, v) 333 struct thread *td; 334 void *v; 335{ 336 struct svr4_sys_semget_args *uap = v; 337 struct semget_args ap; 338 339 ap.key = uap->key; 340 ap.nsems = uap->nsems; 341 ap.semflg = uap->semflg; 342 343 return semget(td, &ap); 344} 345 346struct svr4_sys_semop_args { 347 int what; 348 int semid; 349 struct svr4_sembuf * sops; 350 u_int nsops; 351}; 352 353static int 354svr4_semop(td, v) 355 struct thread *td; 356 void *v; 357{ 358 struct svr4_sys_semop_args *uap = v; 359 struct semop_args ap; 360 361 ap.semid = uap->semid; 362 /* These are the same */ 363 ap.sops = (struct sembuf *) uap->sops; 364 ap.nsops = uap->nsops; 365 366 return semop(td, &ap); 367} 368 369int 370svr4_sys_semsys(td, uap) 371 struct thread *td; 372 struct svr4_sys_semsys_args *uap; 373{ 374 375 DPRINTF(("svr4_semsys(%d)\n", uap->what)); 376 377 switch (uap->what) { 378 case SVR4_semctl: 379 return svr4_semctl(td, uap); 380 case SVR4_semget: 381 return svr4_semget(td, uap); 382 case SVR4_semop: 383 return svr4_semop(td, uap); 384 default: 385 return EINVAL; 386 } 387} 388 389MODULE_DEPEND(svr4elf, sysvsem, 1, 1, 1); 390#endif 391 392#ifdef SYSVMSG 393static void 394bsd_to_svr4_msqid_ds(bds, sds) 395 const struct msqid_ds *bds; 396 struct svr4_msqid_ds *sds; 397{ 398 bsd_to_svr4_ipc_perm(&bds->msg_perm, &sds->msg_perm); 399 sds->msg_first = (struct svr4_msg *) bds->msg_first; 400 sds->msg_last = (struct svr4_msg *) bds->msg_last; 401 sds->msg_cbytes = bds->msg_cbytes; 402 sds->msg_qnum = bds->msg_qnum; 403 sds->msg_qbytes = bds->msg_qbytes; 404 sds->msg_lspid = bds->msg_lspid; 405 sds->msg_lrpid = bds->msg_lrpid; 406 sds->msg_stime = bds->msg_stime; 407 sds->msg_pad1 = bds->msg_pad1; 408 sds->msg_rtime = bds->msg_rtime; 409 sds->msg_pad2 = bds->msg_pad2; 410 sds->msg_ctime = bds->msg_ctime; 411 sds->msg_pad3 = bds->msg_pad3; 412 413 /* use the padding for the rest of the fields */ 414 { 415 const short *pad = (const short *) bds->msg_pad4; 416 sds->msg_cv = pad[0]; 417 sds->msg_qnum_cv = pad[1]; 418 } 419} 420 421static void 422svr4_to_bsd_msqid_ds(sds, bds) 423 const struct svr4_msqid_ds *sds; 424 struct msqid_ds *bds; 425{ 426 svr4_to_bsd_ipc_perm(&sds->msg_perm, &bds->msg_perm); 427 bds->msg_first = (struct msg *) sds->msg_first; 428 bds->msg_last = (struct msg *) sds->msg_last; 429 bds->msg_cbytes = sds->msg_cbytes; 430 bds->msg_qnum = sds->msg_qnum; 431 bds->msg_qbytes = sds->msg_qbytes; 432 bds->msg_lspid = sds->msg_lspid; 433 bds->msg_lrpid = sds->msg_lrpid; 434 bds->msg_stime = sds->msg_stime; 435 bds->msg_pad1 = sds->msg_pad1; 436 bds->msg_rtime = sds->msg_rtime; 437 bds->msg_pad2 = sds->msg_pad2; 438 bds->msg_ctime = sds->msg_ctime; 439 bds->msg_pad3 = sds->msg_pad3; 440 441 /* use the padding for the rest of the fields */ 442 { 443 short *pad = (short *) bds->msg_pad4; 444 pad[0] = sds->msg_cv; 445 pad[1] = sds->msg_qnum_cv; 446 } 447} 448 449struct svr4_sys_msgsnd_args { 450 int what; 451 int msqid; 452 void * msgp; 453 size_t msgsz; 454 int msgflg; 455}; 456 457static int 458svr4_msgsnd(td, v) 459 struct thread *td; 460 void *v; 461{ 462 struct svr4_sys_msgsnd_args *uap = v; 463 struct msgsnd_args ap; 464 465 ap.msqid = uap->msqid; 466 ap.msgp = uap->msgp; 467 ap.msgsz = uap->msgsz; 468 ap.msgflg = uap->msgflg; 469 470 return msgsnd(td, &ap); 471} 472 473struct svr4_sys_msgrcv_args { 474 int what; 475 int msqid; 476 void * msgp; 477 size_t msgsz; 478 long msgtyp; 479 int msgflg; 480}; 481 482static int 483svr4_msgrcv(td, v) 484 struct thread *td; 485 void *v; 486{ 487 struct svr4_sys_msgrcv_args *uap = v; 488 struct msgrcv_args ap; 489 490 ap.msqid = uap->msqid; 491 ap.msgp = uap->msgp; 492 ap.msgsz = uap->msgsz; 493 ap.msgtyp = uap->msgtyp; 494 ap.msgflg = uap->msgflg; 495 496 return msgrcv(td, &ap); 497} 498 499struct svr4_sys_msgget_args { 500 int what; 501 svr4_key_t key; 502 int msgflg; 503}; 504 505static int 506svr4_msgget(td, v) 507 struct thread *td; 508 void *v; 509{ 510 struct svr4_sys_msgget_args *uap = v; 511 struct msgget_args ap; 512 513 ap.key = uap->key; 514 ap.msgflg = uap->msgflg; 515 516 return msgget(td, &ap); 517} 518 519struct svr4_sys_msgctl_args { 520 int what; 521 int msqid; 522 int cmd; 523 struct svr4_msqid_ds * buf; 524}; 525 526static int 527svr4_msgctl(td, v) 528 struct thread *td; 529 void *v; 530{ 531 struct svr4_sys_msgctl_args *uap = v; 532 struct svr4_msqid_ds ss; 533 struct msqid_ds bs; 534 int error; 535 536 switch (uap->cmd) { 537 case SVR4_IPC_STAT: 538 error = kern_msgctl(td, uap->msqid, IPC_STAT, &bs); 539 if (error) 540 return error; 541 bsd_to_svr4_msqid_ds(&bs, &ss); 542 return copyout(&ss, uap->buf, sizeof ss); 543 544 case SVR4_IPC_SET: 545 error = copyin(uap->buf, &ss, sizeof ss); 546 if (error) 547 return error; 548 svr4_to_bsd_msqid_ds(&ss, &bs); 549 return (kern_msgctl(td, uap->msqid, IPC_SET, &bs)); 550 551 case SVR4_IPC_RMID: 552 error = copyin(uap->buf, &ss, sizeof ss); 553 if (error) 554 return error; 555 svr4_to_bsd_msqid_ds(&ss, &bs); 556 return (kern_msgctl(td, uap->msqid, IPC_RMID, &bs)); 557 558 default: 559 return EINVAL; 560 } 561} 562 563int 564svr4_sys_msgsys(td, uap) 565 struct thread *td; 566 struct svr4_sys_msgsys_args *uap; 567{ 568 569 DPRINTF(("svr4_msgsys(%d)\n", uap->what)); 570 571 switch (uap->what) { 572 case SVR4_msgsnd: 573 return svr4_msgsnd(td, uap); 574 case SVR4_msgrcv: 575 return svr4_msgrcv(td, uap); 576 case SVR4_msgget: 577 return svr4_msgget(td, uap); 578 case SVR4_msgctl: 579 return svr4_msgctl(td, uap); 580 default: 581 return EINVAL; 582 } 583} 584 585MODULE_DEPEND(svr4elf, sysvmsg, 1, 1, 1); 586#endif 587 588#ifdef SYSVSHM 589 590static void 591bsd_to_svr4_shmid_ds(bds, sds) 592 const struct shmid_ds *bds; 593 struct svr4_shmid_ds *sds; 594{ 595 bsd_to_svr4_ipc_perm(&bds->shm_perm, &sds->shm_perm); 596 sds->shm_segsz = bds->shm_segsz; 597 sds->shm_lkcnt = 0; 598 sds->shm_lpid = bds->shm_lpid; 599 sds->shm_cpid = bds->shm_cpid; 600 sds->shm_amp = bds->shm_internal; 601 sds->shm_nattch = bds->shm_nattch; 602 sds->shm_cnattch = 0; 603 sds->shm_atime = bds->shm_atime; 604 sds->shm_pad1 = 0; 605 sds->shm_dtime = bds->shm_dtime; 606 sds->shm_pad2 = 0; 607 sds->shm_ctime = bds->shm_ctime; 608 sds->shm_pad3 = 0; 609} 610 611static void 612svr4_to_bsd_shmid_ds(sds, bds) 613 const struct svr4_shmid_ds *sds; 614 struct shmid_ds *bds; 615{ 616 svr4_to_bsd_ipc_perm(&sds->shm_perm, &bds->shm_perm); 617 bds->shm_segsz = sds->shm_segsz; 618 bds->shm_lpid = sds->shm_lpid; 619 bds->shm_cpid = sds->shm_cpid; 620 bds->shm_internal = sds->shm_amp; 621 bds->shm_nattch = sds->shm_nattch; 622 bds->shm_atime = sds->shm_atime; 623 bds->shm_dtime = sds->shm_dtime; 624 bds->shm_ctime = sds->shm_ctime; 625} 626 627struct svr4_sys_shmat_args { 628 int what; 629 int shmid; 630 void * shmaddr; 631 int shmflg; 632}; 633 634static int 635svr4_shmat(td, v) 636 struct thread *td; 637 void *v; 638{ 639 struct svr4_sys_shmat_args *uap = v; 640 struct shmat_args ap; 641 642 ap.shmid = uap->shmid; 643 ap.shmaddr = uap->shmaddr; 644 ap.shmflg = uap->shmflg; 645 646 return shmat(td, &ap); 647} 648 649struct svr4_sys_shmdt_args { 650 int what; 651 void * shmaddr; 652}; 653 654static int 655svr4_shmdt(td, v) 656 struct thread *td; 657 void *v; 658{ 659 struct svr4_sys_shmdt_args *uap = v; 660 struct shmdt_args ap; 661 662 ap.shmaddr = uap->shmaddr; 663 664 return shmdt(td, &ap); 665} 666 667struct svr4_sys_shmget_args { 668 int what; 669 key_t key; 670 int size; 671 int shmflg; 672}; 673 674static int 675svr4_shmget(td, v) 676 struct thread *td; 677 void *v; 678{ 679 struct svr4_sys_shmget_args *uap = v; 680 struct shmget_args ap; 681 682 ap.key = uap->key; 683 ap.size = uap->size; 684 ap.shmflg = uap->shmflg; 685 686 return shmget(td, &ap); 687} 688 689struct svr4_sys_shmctl_args { 690 int what; 691 int shmid; 692 int cmd; 693 struct svr4_shmid_ds * buf; 694}; 695 696int 697svr4_shmctl(td, v) 698 struct thread *td; 699 void *v; 700{ 701 struct svr4_sys_shmctl_args *uap = v; 702 int error; 703 caddr_t sg = stackgap_init(); 704 struct shmctl_args ap; 705 struct shmid_ds bs; 706 struct svr4_shmid_ds ss; 707 708 ap.shmid = uap->shmid; 709 710 if (uap->buf != NULL) { 711 ap.buf = stackgap_alloc(&sg, sizeof (struct shmid_ds)); 712 switch (uap->cmd) { 713 case SVR4_IPC_SET: 714 case SVR4_IPC_RMID: 715 case SVR4_SHM_LOCK: 716 case SVR4_SHM_UNLOCK: 717 error = copyin(uap->buf, (caddr_t) &ss, 718 sizeof ss); 719 if (error) 720 return error; 721 svr4_to_bsd_shmid_ds(&ss, &bs); 722 error = copyout(&bs, ap.buf, sizeof bs); 723 if (error) 724 return error; 725 break; 726 default: 727 break; 728 } 729 } 730 else 731 ap.buf = NULL; 732 733 734 switch (uap->cmd) { 735 case SVR4_IPC_STAT: 736 ap.cmd = IPC_STAT; 737 if ((error = shmctl(td, &ap)) != 0) 738 return error; 739 if (uap->buf == NULL) 740 return 0; 741 error = copyin(&bs, ap.buf, sizeof bs); 742 if (error) 743 return error; 744 bsd_to_svr4_shmid_ds(&bs, &ss); 745 return copyout(&ss, uap->buf, sizeof ss); 746 747 case SVR4_IPC_SET: 748 ap.cmd = IPC_SET; 749 return shmctl(td, &ap); 750 751 case SVR4_IPC_RMID: 752 case SVR4_SHM_LOCK: 753 case SVR4_SHM_UNLOCK: 754 switch (uap->cmd) { 755 case SVR4_IPC_RMID: 756 ap.cmd = IPC_RMID; 757 break; 758 case SVR4_SHM_LOCK: 759 ap.cmd = SHM_LOCK; 760 break; 761 case SVR4_SHM_UNLOCK: 762 ap.cmd = SHM_UNLOCK; 763 break; 764 default: 765 return EINVAL; 766 } 767 return shmctl(td, &ap); 768 769 default: 770 return EINVAL; 771 } 772} 773 774int 775svr4_sys_shmsys(td, uap) 776 struct thread *td; 777 struct svr4_sys_shmsys_args *uap; 778{ 779 780 DPRINTF(("svr4_shmsys(%d)\n", uap->what)); 781 782 switch (uap->what) { 783 case SVR4_shmat: 784 return svr4_shmat(td, uap); 785 case SVR4_shmdt: 786 return svr4_shmdt(td, uap); 787 case SVR4_shmget: 788 return svr4_shmget(td, uap); 789 case SVR4_shmctl: 790 return svr4_shmctl(td, uap); 791 default: 792 return ENOSYS; 793 } 794} 795 796MODULE_DEPEND(svr4elf, sysvshm, 1, 1, 1); 797#endif /* SYSVSHM */ 798