Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/compat/svr4/svr4_ipc.c
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1 /*- 2 * Copyright (c) 1995 The NetBSD Foundation, Inc. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to The NetBSD Foundation 6 * by Christos Zoulas. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the NetBSD 19 * Foundation, Inc. and its contributors. 20 * 4. Neither the name of The NetBSD Foundation nor the names of its 21 * contributors may be used to endorse or promote products derived 22 * from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 25 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 26 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 * POSSIBILITY OF SUCH DAMAGE. 35 */ 36 /*- 37 * 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: src/sys/compat/svr4/svr4_ipc.c,v 1.13.4.1 2005/01/30 00:59:20 imp Exp $"); 75 76 #include <sys/types.h> 77 #include <sys/param.h> 78 #include <sys/proc.h> 79 #include <sys/time.h> 80 81 #include <compat/svr4/svr4.h> 82 #include <compat/svr4/svr4_types.h> 83 #include <compat/svr4/svr4_signal.h> 84 #include <compat/svr4/svr4_proto.h> 85 #include <compat/svr4/svr4_util.h> 86 #include <compat/svr4/svr4_ipc.h> 87 88 #if defined(SYSVMSG) || defined(SYSVSHM) || defined(SYSVSEM) 89 static void svr4_to_bsd_ipc_perm(const struct svr4_ipc_perm *, 90 struct ipc_perm *); 91 static void bsd_to_svr4_ipc_perm(const struct ipc_perm *, 92 struct svr4_ipc_perm *); 93 #endif 94 95 #ifdef SYSVSEM 96 static void bsd_to_svr4_semid_ds(const struct semid_ds *, 97 struct svr4_semid_ds *); 98 static void svr4_to_bsd_semid_ds(const struct svr4_semid_ds *, 99 struct semid_ds *); 100 static int svr4_setsemun(caddr_t *sgp, union semun **argp, 101 union semun *usp); 102 static int svr4_semop(struct proc *, void *, register_t *); 103 static int svr4_semget(struct proc *, void *, register_t *); 104 static int svr4_semctl(struct proc *, void *, register_t *); 105 #endif 106 107 #ifdef SYSVMSG 108 static void bsd_to_svr4_msqid_ds(const struct msqid_ds *, 109 struct svr4_msqid_ds *); 110 static void svr4_to_bsd_msqid_ds(const struct svr4_msqid_ds *, 111 struct msqid_ds *); 112 static int svr4_msgsnd(struct proc *, void *, register_t *); 113 static int svr4_msgrcv(struct proc *, void *, register_t *); 114 static int svr4_msgget(struct proc *, void *, register_t *); 115 static int svr4_msgctl(struct proc *, void *, register_t *); 116 #endif 117 118 #ifdef SYSVSHM 119 static void bsd_to_svr4_shmid_ds(const struct shmid_ds *, 120 struct svr4_shmid_ds *); 121 static void svr4_to_bsd_shmid_ds(const struct svr4_shmid_ds *, 122 struct shmid_ds *); 123 static int svr4_shmat(struct proc *, void *, register_t *); 124 static int svr4_shmdt(struct proc *, void *, register_t *); 125 static int svr4_shmget(struct proc *, void *, register_t *); 126 static int svr4_shmctl(struct proc *, void *, register_t *); 127 #endif 128 129 #if defined(SYSVMSG) || defined(SYSVSHM) || defined(SYSVSEM) 130 131 static void 132 svr4_to_bsd_ipc_perm(spp, bpp) 133 const struct svr4_ipc_perm *spp; 134 struct ipc_perm *bpp; 135 { 136 bpp->key = spp->key; 137 bpp->uid = spp->uid; 138 bpp->gid = spp->gid; 139 bpp->cuid = spp->cuid; 140 bpp->cgid = spp->cgid; 141 bpp->mode = spp->mode; 142 bpp->seq = spp->seq; 143 } 144 145 static void 146 bsd_to_svr4_ipc_perm(bpp, spp) 147 const struct ipc_perm *bpp; 148 struct svr4_ipc_perm *spp; 149 { 150 spp->key = bpp->key; 151 spp->uid = bpp->uid; 152 spp->gid = bpp->gid; 153 spp->cuid = bpp->cuid; 154 spp->cgid = bpp->cgid; 155 spp->mode = bpp->mode; 156 spp->seq = bpp->seq; 157 } 158 #endif 159 160 #ifdef SYSVSEM 161 static void 162 bsd_to_svr4_semid_ds(bds, sds) 163 const struct semid_ds *bds; 164 struct svr4_semid_ds *sds; 165 { 166 bsd_to_svr4_ipc_perm(&bds->sem_perm, &sds->sem_perm); 167 sds->sem_base = (struct svr4_sem *) bds->sem_base; 168 sds->sem_nsems = bds->sem_nsems; 169 sds->sem_otime = bds->sem_otime; 170 sds->sem_pad1 = bds->sem_pad1; 171 sds->sem_ctime = bds->sem_ctime; 172 sds->sem_pad2 = bds->sem_pad2; 173 } 174 175 static void 176 svr4_to_bsd_semid_ds(sds, bds) 177 const struct svr4_semid_ds *sds; 178 struct semid_ds *bds; 179 { 180 svr4_to_bsd_ipc_perm(&sds->sem_perm, &bds->sem_perm); 181 bds->sem_base = (struct sem *) bds->sem_base; 182 bds->sem_nsems = sds->sem_nsems; 183 bds->sem_otime = sds->sem_otime; 184 bds->sem_pad1 = sds->sem_pad1; 185 bds->sem_ctime = sds->sem_ctime; 186 bds->sem_pad2 = sds->sem_pad2; 187 } 188 189 static int 190 svr4_setsemun(sgp, argp, usp) 191 caddr_t *sgp; 192 union semun **argp; 193 union semun *usp; 194 { 195 *argp = stackgap_alloc(sgp, sizeof(union semun)); 196 return copyout((caddr_t)usp, *argp, sizeof(union semun)); 197 } 198 199 struct svr4_sys_semctl_args { 200 syscallarg(int) what; 201 syscallarg(int) semid; 202 syscallarg(int) semnum; 203 syscallarg(int) cmd; 204 syscallarg(union semun) arg; 205 }; 206 207 static int 208 svr4_semctl(p, v, retval) 209 struct proc *p; 210 void *v; 211 register_t *retval; 212 { 213 int error; 214 struct svr4_sys_semctl_args *uap = v; 215 struct sys___semctl_args ap; 216 struct svr4_semid_ds ss; 217 struct semid_ds bs, *bsp; 218 caddr_t sg = stackgap_init(); 219 220 ap.semid = uap->semid; 221 ap.semnum = uap->semnum; 222 223 switch (uap->cmd) { 224 case SVR4_SEM_GETZCNT: 225 case SVR4_SEM_GETNCNT: 226 case SVR4_SEM_GETPID: 227 case SVR4_SEM_GETVAL: 228 switch (uap->cmd) { 229 case SVR4_SEM_GETZCNT: 230 ap.cmd = GETZCNT; 231 break; 232 case SVR4_SEM_GETNCNT: 233 ap.cmd = GETNCNT; 234 break; 235 case SVR4_SEM_GETPID: 236 ap.cmd = GETPID; 237 break; 238 case SVR4_SEM_GETVAL: 239 ap.cmd = GETVAL; 240 break; 241 } 242 return sys___semctl(p, &ap, retval); 243 244 case SVR4_SEM_SETVAL: 245 error = svr4_setsemun(&sg, &ap.arg, &uap->arg); 246 if (error) 247 return error; 248 ap.cmd = SETVAL; 249 return sys___semctl(p, &ap, retval); 250 251 case SVR4_SEM_GETALL: 252 error = svr4_setsemun(&sg, &ap.arg, &uap->arg); 253 if (error) 254 return error; 255 ap.cmd = GETVAL; 256 return sys___semctl(p, &ap, retval); 257 258 case SVR4_SEM_SETALL: 259 error = svr4_setsemun(&sg, &ap.arg, &uap->arg); 260 if (error) 261 return error; 262 ap.cmd = SETVAL; 263 return sys___semctl(p, &ap, retval); 264 265 case SVR4_IPC_STAT: 266 ap.cmd = IPC_STAT; 267 bsp = stackgap_alloc(&sg, sizeof(bs)); 268 error = svr4_setsemun(&sg, &ap.arg, 269 (union semun *)&bsp); 270 if (error) 271 return error; 272 if ((error = sys___semctl(p, &ap, retval)) != 0) 273 return error; 274 error = copyin((caddr_t)bsp, (caddr_t)&bs, sizeof(bs)); 275 if (error) 276 return error; 277 bsd_to_svr4_semid_ds(&bs, &ss); 278 return copyout(&ss, uap->arg.buf, sizeof(ss)); 279 280 case SVR4_IPC_SET: 281 ap.cmd = IPC_SET; 282 bsp = stackgap_alloc(&sg, sizeof(bs)); 283 error = svr4_setsemun(&sg, &ap.arg, 284 (union semun *)&bsp); 285 if (error) 286 return error; 287 error = copyin(uap->arg.buf, (caddr_t) &ss, sizeof ss); 288 if (error) 289 return error; 290 svr4_to_bsd_semid_ds(&ss, &bs); 291 error = copyout(&bs, bsp, sizeof(bs)); 292 if (error) 293 return error; 294 return sys___semctl(p, &ap, retval); 295 296 case SVR4_IPC_RMID: 297 ap.cmd = IPC_RMID; 298 bsp = stackgap_alloc(&sg, sizeof(bs)); 299 error = svr4_setsemun(&sg, &ap.arg, 300 (union semun *)&bsp); 301 if (error) 302 return error; 303 error = copyin(uap->arg.buf, &ss, sizeof ss); 304 if (error) 305 return error; 306 svr4_to_bsd_semid_ds(&ss, &bs); 307 error = copyout(&bs, bsp, sizeof(bs)); 308 if (error) 309 return error; 310 return sys___semctl(p, &ap, retval); 311 312 default: 313 return EINVAL; 314 } 315 } 316 317 struct svr4_sys_semget_args { 318 syscallarg(int) what; 319 syscallarg(svr4_key_t) key; 320 syscallarg(int) nsems; 321 syscallarg(int) semflg; 322 }; 323 324 static int 325 svr4_semget(p, v, retval) 326 struct proc *p; 327 void *v; 328 register_t *retval; 329 { 330 struct svr4_sys_semget_args *uap = v; 331 struct sys_semget_args ap; 332 333 ap.key = uap->key; 334 ap.nsems = uap->nsems; 335 ap.semflg = uap->semflg; 336 337 return sys_semget(p, &ap, retval); 338 } 339 340 struct svr4_sys_semop_args { 341 syscallarg(int) what; 342 syscallarg(int) semid; 343 syscallarg(struct svr4_sembuf *) sops; 344 syscallarg(u_int) nsops; 345 }; 346 347 static int 348 svr4_semop(p, v, retval) 349 struct proc *p; 350 void *v; 351 register_t *retval; 352 { 353 struct svr4_sys_semop_args *uap = v; 354 struct sys_semop_args ap; 355 356 ap.semid = uap->semid; 357 /* These are the same */ 358 ap.sops = (struct sembuf *) uap->sops; 359 ap.nsops = uap->nsops; 360 361 return sys_semop(p, &ap, retval); 362 } 363 364 int 365 svr4_sys_semsys(p, v, retval) 366 struct proc *p; 367 void *v; 368 register_t *retval; 369 { 370 struct svr4_sys_semsys_args *uap = v; 371 372 DPRINTF(("svr4_semsys(%d)\n", uap->what)); 373 374 switch (uap->what) { 375 case SVR4_semctl: 376 return svr4_semctl(p, v, retval); 377 case SVR4_semget: 378 return svr4_semget(p, v, retval); 379 case SVR4_semop: 380 return svr4_semop(p, v, retval); 381 default: 382 return EINVAL; 383 } 384 } 385 #endif 386 387 #ifdef SYSVMSG 388 static void 389 bsd_to_svr4_msqid_ds(bds, sds) 390 const struct msqid_ds *bds; 391 struct svr4_msqid_ds *sds; 392 { 393 bsd_to_svr4_ipc_perm(&bds->msg_perm, &sds->msg_perm); 394 sds->msg_first = (struct svr4_msg *) bds->msg_first; 395 sds->msg_last = (struct svr4_msg *) bds->msg_last; 396 sds->msg_cbytes = bds->msg_cbytes; 397 sds->msg_qnum = bds->msg_qnum; 398 sds->msg_qbytes = bds->msg_qbytes; 399 sds->msg_lspid = bds->msg_lspid; 400 sds->msg_lrpid = bds->msg_lrpid; 401 sds->msg_stime = bds->msg_stime; 402 sds->msg_pad1 = bds->msg_pad1; 403 sds->msg_rtime = bds->msg_rtime; 404 sds->msg_pad2 = bds->msg_pad2; 405 sds->msg_ctime = bds->msg_ctime; 406 sds->msg_pad3 = bds->msg_pad3; 407 408 /* use the padding for the rest of the fields */ 409 { 410 const short *pad = (const short *) bds->msg_pad4; 411 sds->msg_cv = pad[0]; 412 sds->msg_qnum_cv = pad[1]; 413 } 414 } 415 416 static void 417 svr4_to_bsd_msqid_ds(sds, bds) 418 const struct svr4_msqid_ds *sds; 419 struct msqid_ds *bds; 420 { 421 svr4_to_bsd_ipc_perm(&sds->msg_perm, &bds->msg_perm); 422 bds->msg_first = (struct msg *) sds->msg_first; 423 bds->msg_last = (struct msg *) sds->msg_last; 424 bds->msg_cbytes = sds->msg_cbytes; 425 bds->msg_qnum = sds->msg_qnum; 426 bds->msg_qbytes = sds->msg_qbytes; 427 bds->msg_lspid = sds->msg_lspid; 428 bds->msg_lrpid = sds->msg_lrpid; 429 bds->msg_stime = sds->msg_stime; 430 bds->msg_pad1 = sds->msg_pad1; 431 bds->msg_rtime = sds->msg_rtime; 432 bds->msg_pad2 = sds->msg_pad2; 433 bds->msg_ctime = sds->msg_ctime; 434 bds->msg_pad3 = sds->msg_pad3; 435 436 /* use the padding for the rest of the fields */ 437 { 438 short *pad = (short *) bds->msg_pad4; 439 pad[0] = sds->msg_cv; 440 pad[1] = sds->msg_qnum_cv; 441 } 442 } 443 444 struct svr4_sys_msgsnd_args { 445 syscallarg(int) what; 446 syscallarg(int) msqid; 447 syscallarg(void *) msgp; 448 syscallarg(size_t) msgsz; 449 syscallarg(int) msgflg; 450 }; 451 452 static int 453 svr4_msgsnd(p, v, retval) 454 struct proc *p; 455 void *v; 456 register_t *retval; 457 { 458 struct svr4_sys_msgsnd_args *uap = v; 459 struct sys_msgsnd_args ap; 460 461 ap.msqid = uap->msqid; 462 ap.msgp = uap->msgp; 463 ap.msgsz = uap->msgsz; 464 ap.msgflg = uap->msgflg; 465 466 return sys_msgsnd(p, &ap, retval); 467 } 468 469 struct svr4_sys_msgrcv_args { 470 syscallarg(int) what; 471 syscallarg(int) msqid; 472 syscallarg(void *) msgp; 473 syscallarg(size_t) msgsz; 474 syscallarg(long) msgtyp; 475 syscallarg(int) msgflg; 476 }; 477 478 static int 479 svr4_msgrcv(p, v, retval) 480 struct proc *p; 481 void *v; 482 register_t *retval; 483 { 484 struct svr4_sys_msgrcv_args *uap = v; 485 struct sys_msgrcv_args ap; 486 487 ap.msqid = uap->msqid; 488 ap.msgp = uap->msgp; 489 ap.msgsz = uap->msgsz; 490 ap.msgtyp = uap->msgtyp; 491 ap.msgflg = uap->msgflg; 492 493 return sys_msgrcv(p, &ap, retval); 494 } 495 496 struct svr4_sys_msgget_args { 497 syscallarg(int) what; 498 syscallarg(svr4_key_t) key; 499 syscallarg(int) msgflg; 500 }; 501 502 static int 503 svr4_msgget(p, v, retval) 504 struct proc *p; 505 void *v; 506 register_t *retval; 507 { 508 struct svr4_sys_msgget_args *uap = v; 509 struct sys_msgget_args ap; 510 511 ap.key = uap->key; 512 ap.msgflg = uap->msgflg; 513 514 return sys_msgget(p, &ap, retval); 515 } 516 517 struct svr4_sys_msgctl_args { 518 syscallarg(int) what; 519 syscallarg(int) msqid; 520 syscallarg(int) cmd; 521 syscallarg(struct svr4_msqid_ds *) buf; 522 }; 523 524 static int 525 svr4_msgctl(p, v, retval) 526 struct proc *p; 527 void *v; 528 register_t *retval; 529 { 530 int error; 531 struct svr4_sys_msgctl_args *uap = v; 532 struct sys_msgctl_args ap; 533 struct svr4_msqid_ds ss; 534 struct msqid_ds bs; 535 caddr_t sg = stackgap_init(); 536 537 ap.msqid = uap->msqid; 538 ap.cmd = uap->cmd; 539 ap.buf = stackgap_alloc(&sg, sizeof(bs)); 540 541 switch (uap->cmd) { 542 case SVR4_IPC_STAT: 543 ap.cmd = IPC_STAT; 544 if ((error = sys_msgctl(p, &ap, retval)) != 0) 545 return error; 546 error = copyin(&bs, ap.buf, sizeof bs); 547 if (error) 548 return error; 549 bsd_to_svr4_msqid_ds(&bs, &ss); 550 return copyout(&ss, uap->buf, sizeof ss); 551 552 case SVR4_IPC_SET: 553 ap.cmd = IPC_SET; 554 error = copyin(uap->buf, &ss, sizeof ss); 555 if (error) 556 return error; 557 svr4_to_bsd_msqid_ds(&ss, &bs); 558 error = copyout(&bs, ap.buf, sizeof bs); 559 if (error) 560 return error; 561 return sys_msgctl(p, &ap, retval); 562 563 case SVR4_IPC_RMID: 564 ap.cmd = IPC_RMID; 565 error = copyin(uap->buf, &ss, sizeof ss); 566 if (error) 567 return error; 568 svr4_to_bsd_msqid_ds(&ss, &bs); 569 error = copyout(&bs, ap.buf, sizeof bs); 570 if (error) 571 return error; 572 return sys_msgctl(p, &ap, retval); 573 574 default: 575 return EINVAL; 576 } 577 } 578 579 int 580 svr4_sys_msgsys(p, v, retval) 581 struct proc *p; 582 void *v; 583 register_t *retval; 584 { 585 struct svr4_sys_msgsys_args *uap = v; 586 587 DPRINTF(("svr4_msgsys(%d)\n", uap->what)); 588 589 switch (uap->what) { 590 case SVR4_msgsnd: 591 return svr4_msgsnd(p, v, retval); 592 case SVR4_msgrcv: 593 return svr4_msgrcv(p, v, retval); 594 case SVR4_msgget: 595 return svr4_msgget(p, v, retval); 596 case SVR4_msgctl: 597 return svr4_msgctl(p, v, retval); 598 default: 599 return EINVAL; 600 } 601 } 602 #endif 603 604 #ifdef SYSVSHM 605 606 static void 607 bsd_to_svr4_shmid_ds(bds, sds) 608 const struct shmid_ds *bds; 609 struct svr4_shmid_ds *sds; 610 { 611 bsd_to_svr4_ipc_perm(&bds->shm_perm, &sds->shm_perm); 612 sds->shm_segsz = bds->shm_segsz; 613 sds->shm_lkcnt = 0; 614 sds->shm_lpid = bds->shm_lpid; 615 sds->shm_cpid = bds->shm_cpid; 616 sds->shm_amp = bds->shm_internal; 617 sds->shm_nattch = bds->shm_nattch; 618 sds->shm_cnattch = 0; 619 sds->shm_atime = bds->shm_atime; 620 sds->shm_pad1 = 0; 621 sds->shm_dtime = bds->shm_dtime; 622 sds->shm_pad2 = 0; 623 sds->shm_ctime = bds->shm_ctime; 624 sds->shm_pad3 = 0; 625 } 626 627 static void 628 svr4_to_bsd_shmid_ds(sds, bds) 629 const struct svr4_shmid_ds *sds; 630 struct shmid_ds *bds; 631 { 632 svr4_to_bsd_ipc_perm(&sds->shm_perm, &bds->shm_perm); 633 bds->shm_segsz = sds->shm_segsz; 634 bds->shm_lpid = sds->shm_lpid; 635 bds->shm_cpid = sds->shm_cpid; 636 bds->shm_internal = sds->shm_amp; 637 bds->shm_nattch = sds->shm_nattch; 638 bds->shm_atime = sds->shm_atime; 639 bds->shm_dtime = sds->shm_dtime; 640 bds->shm_ctime = sds->shm_ctime; 641 } 642 643 struct svr4_sys_shmat_args { 644 syscallarg(int) what; 645 syscallarg(int) shmid; 646 syscallarg(void *) shmaddr; 647 syscallarg(int) shmflg; 648 }; 649 650 static int 651 svr4_shmat(p, v, retval) 652 struct proc *p; 653 void *v; 654 register_t *retval; 655 { 656 struct svr4_sys_shmat_args *uap = v; 657 struct sys_shmat_args ap; 658 659 ap.shmid = uap->shmid; 660 ap.shmaddr = uap->shmaddr; 661 ap.shmflg = uap->shmflg; 662 663 return sys_shmat(p, &ap, retval); 664 } 665 666 struct svr4_sys_shmdt_args { 667 syscallarg(int) what; 668 syscallarg(void *) shmaddr; 669 }; 670 671 static int 672 svr4_shmdt(p, v, retval) 673 struct proc *p; 674 void *v; 675 register_t *retval; 676 { 677 struct svr4_sys_shmdt_args *uap = v; 678 struct sys_shmdt_args ap; 679 680 ap.shmaddr = uap->shmaddr; 681 682 return sys_shmdt(p, &ap, retval); 683 } 684 685 struct svr4_sys_shmget_args { 686 syscallarg(int) what; 687 syscallarg(key_t) key; 688 syscallarg(int) size; 689 syscallarg(int) shmflg; 690 }; 691 692 static int 693 svr4_shmget(p, v, retval) 694 struct proc *p; 695 void *v; 696 register_t *retval; 697 { 698 struct svr4_sys_shmget_args *uap = v; 699 struct sys_shmget_args ap; 700 701 ap.key = uap->key; 702 ap.size = uap->size; 703 ap.shmflg = uap->shmflg; 704 705 return sys_shmget(p, &ap, retval); 706 } 707 708 struct svr4_sys_shmctl_args { 709 syscallarg(int) what; 710 syscallarg(int) shmid; 711 syscallarg(int) cmd; 712 syscallarg(struct svr4_shmid_ds *) buf; 713 }; 714 715 int 716 svr4_shmctl(p, v, retval) 717 struct proc *p; 718 void *v; 719 register_t *retval; 720 { 721 struct svr4_sys_shmctl_args *uap = v; 722 int error; 723 caddr_t sg = stackgap_init(); 724 struct sys_shmctl_args ap; 725 struct shmid_ds bs; 726 struct svr4_shmid_ds ss; 727 728 ap.shmid = uap->shmid; 729 730 if (uap->buf != NULL) { 731 ap.buf = stackgap_alloc(&sg, sizeof (struct shmid_ds)); 732 switch (uap->cmd) { 733 case SVR4_IPC_SET: 734 case SVR4_IPC_RMID: 735 case SVR4_SHM_LOCK: 736 case SVR4_SHM_UNLOCK: 737 error = copyin(uap->buf, (caddr_t) &ss, 738 sizeof ss); 739 if (error) 740 return error; 741 svr4_to_bsd_shmid_ds(&ss, &bs); 742 error = copyout(&bs, ap.buf, sizeof bs); 743 if (error) 744 return error; 745 break; 746 default: 747 break; 748 } 749 } 750 else 751 ap.buf = NULL; 752 753 754 switch (uap->cmd) { 755 case SVR4_IPC_STAT: 756 ap.cmd = IPC_STAT; 757 if ((error = sys_shmctl(p, &ap, retval)) != 0) 758 return error; 759 if (uap->buf == NULL) 760 return 0; 761 error = copyin(&bs, ap.buf, sizeof bs); 762 if (error) 763 return error; 764 bsd_to_svr4_shmid_ds(&bs, &ss); 765 return copyout(&ss, uap->buf, sizeof ss); 766 767 case SVR4_IPC_SET: 768 ap.cmd = IPC_SET; 769 return sys_shmctl(p, &ap, retval); 770 771 case SVR4_IPC_RMID: 772 case SVR4_SHM_LOCK: 773 case SVR4_SHM_UNLOCK: 774 switch (uap->cmd) { 775 case SVR4_IPC_RMID: 776 ap.cmd = IPC_RMID; 777 break; 778 case SVR4_SHM_LOCK: 779 ap.cmd = SHM_LOCK; 780 break; 781 case SVR4_SHM_UNLOCK: 782 ap.cmd = SHM_UNLOCK; 783 break; 784 default: 785 return EINVAL; 786 } 787 return sys_shmctl(p, &ap, retval); 788 789 default: 790 return EINVAL; 791 } 792 } 793 794 int 795 svr4_sys_shmsys(p, v, retval) 796 struct proc *p; 797 void *v; 798 register_t *retval; 799 { 800 struct svr4_sys_shmsys_args *uap = v; 801 802 DPRINTF(("svr4_shmsys(%d)\n", uap->what)); 803 804 switch (uap->what) { 805 case SVR4_shmat: 806 return svr4_shmat(p, v, retval); 807 case SVR4_shmdt: 808 return svr4_shmdt(p, v, retval); 809 case SVR4_shmget: 810 return svr4_shmget(p, v, retval); 811 case SVR4_shmctl: 812 return svr4_shmctl(p, v, retval); 813 default: 814 return ENOSYS; 815 } 816 } 817 #endif /* SYSVSHM */
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