Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/svr4/svr4_ipc.c
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1 /* 2 * $FreeBSD$ 3 * Derived from: 4 * $NetBSD: svr4_ipc.c,v 1.7 1998/10/19 22:43:00 tron Exp $ */ 5 6 /*- 7 * Original copyright: 8 * 9 * Copyright (c) 1995 The NetBSD Foundation, Inc. 10 * All rights reserved. 11 * 12 * This code is derived from software contributed to The NetBSD Foundation 13 * by Christos Zoulas. 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 1. Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in the 22 * documentation and/or other materials provided with the distribution. 23 * 3. All advertising materials mentioning features or use of this software 24 * must display the following acknowledgement: 25 * This product includes software developed by the NetBSD 26 * Foundation, Inc. and its contributors. 27 * 4. Neither the name of The NetBSD Foundation nor the names of its 28 * contributors may be used to endorse or promote products derived 29 * from this software without specific prior written permission. 30 * 31 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 32 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 33 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 34 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 35 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 36 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 37 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 38 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 39 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 40 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 * POSSIBILITY OF SUCH DAMAGE. 42 */ 43 44 /* 45 * Portions of this code have been derived from software contributed 46 * to the FreeBSD Project by Mark Newton. 47 * 48 * Copyright (c) 1999 Mark Newton 49 * All rights reserved. 50 * 51 * Redistribution and use in source and binary forms, with or without 52 * modification, are permitted provided that the following conditions 53 * are met: 54 * 1. Redistributions of source code must retain the above copyright 55 * notice, this list of conditions and the following disclaimer. 56 * 2. Redistributions in binary form must reproduce the above copyright 57 * notice, this list of conditions and the following disclaimer in the 58 * documentation and/or other materials provided with the distribution. 59 * 3. The name of the author may not be used to endorse or promote products 60 * derived from this software without specific prior written permission 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 63 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 64 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 65 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 66 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 67 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 68 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 69 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 70 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 71 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 72 * 73 * XXX- This code is presently a no-op on FreeBSD (and isn't compiled due 74 * to preprocessor conditionals). A nice project for a kernel hacking 75 * novice might be to MakeItGo, but I have more important fish to fry 76 * at present. 77 * 78 */ 79 80 #include <sys/types.h> 81 #include <sys/param.h> 82 #include <sys/kernel.h> 83 #include <sys/proc.h> 84 #include <sys/time.h> 85 86 #include <svr4/svr4.h> 87 #include <svr4/svr4_types.h> 88 #include <svr4/svr4_signal.h> 89 #include <svr4/svr4_proto.h> 90 #include <svr4/svr4_util.h> 91 #include <svr4/svr4_ipc.h> 92 93 #if defined(SYSVMSG) || defined(SYSVSHM) || defined(SYSVSEM) 94 static void svr4_to_bsd_ipc_perm __P((const struct svr4_ipc_perm *, 95 struct ipc_perm *)); 96 static void bsd_to_svr4_ipc_perm __P((const struct ipc_perm *, 97 struct svr4_ipc_perm *)); 98 #endif 99 100 #ifdef SYSVSEM 101 static void bsd_to_svr4_semid_ds __P((const struct semid_ds *, 102 struct svr4_semid_ds *)); 103 static void svr4_to_bsd_semid_ds __P((const struct svr4_semid_ds *, 104 struct semid_ds *)); 105 static int svr4_setsemun __P((caddr_t *sgp, union semun **argp, 106 union semun *usp)); 107 static int svr4_semop __P((struct proc *, void *, register_t *)); 108 static int svr4_semget __P((struct proc *, void *, register_t *)); 109 static int svr4_semctl __P((struct proc *, void *, register_t *)); 110 #endif 111 112 #ifdef SYSVMSG 113 static void bsd_to_svr4_msqid_ds __P((const struct msqid_ds *, 114 struct svr4_msqid_ds *)); 115 static void svr4_to_bsd_msqid_ds __P((const struct svr4_msqid_ds *, 116 struct msqid_ds *)); 117 static int svr4_msgsnd __P((struct proc *, void *, register_t *)); 118 static int svr4_msgrcv __P((struct proc *, void *, register_t *)); 119 static int svr4_msgget __P((struct proc *, void *, register_t *)); 120 static int svr4_msgctl __P((struct proc *, void *, register_t *)); 121 #endif 122 123 #ifdef SYSVSHM 124 static void bsd_to_svr4_shmid_ds __P((const struct shmid_ds *, 125 struct svr4_shmid_ds *)); 126 static void svr4_to_bsd_shmid_ds __P((const struct svr4_shmid_ds *, 127 struct shmid_ds *)); 128 static int svr4_shmat __P((struct proc *, void *, register_t *)); 129 static int svr4_shmdt __P((struct proc *, void *, register_t *)); 130 static int svr4_shmget __P((struct proc *, void *, register_t *)); 131 static int svr4_shmctl __P((struct proc *, void *, register_t *)); 132 #endif 133 134 #if defined(SYSVMSG) || defined(SYSVSHM) || defined(SYSVSEM) 135 136 static void 137 svr4_to_bsd_ipc_perm(spp, bpp) 138 const struct svr4_ipc_perm *spp; 139 struct ipc_perm *bpp; 140 { 141 bpp->key = spp->key; 142 bpp->uid = spp->uid; 143 bpp->gid = spp->gid; 144 bpp->cuid = spp->cuid; 145 bpp->cgid = spp->cgid; 146 bpp->mode = spp->mode; 147 bpp->seq = spp->seq; 148 } 149 150 static void 151 bsd_to_svr4_ipc_perm(bpp, spp) 152 const struct ipc_perm *bpp; 153 struct svr4_ipc_perm *spp; 154 { 155 spp->key = bpp->key; 156 spp->uid = bpp->uid; 157 spp->gid = bpp->gid; 158 spp->cuid = bpp->cuid; 159 spp->cgid = bpp->cgid; 160 spp->mode = bpp->mode; 161 spp->seq = bpp->seq; 162 } 163 #endif 164 165 #ifdef SYSVSEM 166 static void 167 bsd_to_svr4_semid_ds(bds, sds) 168 const struct semid_ds *bds; 169 struct svr4_semid_ds *sds; 170 { 171 bsd_to_svr4_ipc_perm(&bds->sem_perm, &sds->sem_perm); 172 sds->sem_base = (struct svr4_sem *) bds->sem_base; 173 sds->sem_nsems = bds->sem_nsems; 174 sds->sem_otime = bds->sem_otime; 175 sds->sem_pad1 = bds->sem_pad1; 176 sds->sem_ctime = bds->sem_ctime; 177 sds->sem_pad2 = bds->sem_pad2; 178 } 179 180 static void 181 svr4_to_bsd_semid_ds(sds, bds) 182 const struct svr4_semid_ds *sds; 183 struct semid_ds *bds; 184 { 185 svr4_to_bsd_ipc_perm(&sds->sem_perm, &bds->sem_perm); 186 bds->sem_base = (struct sem *) bds->sem_base; 187 bds->sem_nsems = sds->sem_nsems; 188 bds->sem_otime = sds->sem_otime; 189 bds->sem_pad1 = sds->sem_pad1; 190 bds->sem_ctime = sds->sem_ctime; 191 bds->sem_pad2 = sds->sem_pad2; 192 } 193 194 static int 195 svr4_setsemun(sgp, argp, usp) 196 caddr_t *sgp; 197 union semun **argp; 198 union semun *usp; 199 { 200 *argp = stackgap_alloc(sgp, sizeof(union semun)); 201 return copyout((caddr_t)usp, *argp, sizeof(union semun)); 202 } 203 204 struct svr4_sys_semctl_args { 205 syscallarg(int) what; 206 syscallarg(int) semid; 207 syscallarg(int) semnum; 208 syscallarg(int) cmd; 209 syscallarg(union semun) arg; 210 }; 211 212 static int 213 svr4_semctl(p, v, retval) 214 struct proc *p; 215 void *v; 216 register_t *retval; 217 { 218 int error; 219 struct svr4_sys_semctl_args *uap = v; 220 struct sys___semctl_args ap; 221 struct svr4_semid_ds ss; 222 struct semid_ds bs, *bsp; 223 caddr_t sg = stackgap_init(p->p_emul); 224 225 SCARG(&ap, semid) = SCARG(uap, semid); 226 SCARG(&ap, semnum) = SCARG(uap, semnum); 227 228 switch (SCARG(uap, cmd)) { 229 case SVR4_SEM_GETZCNT: 230 case SVR4_SEM_GETNCNT: 231 case SVR4_SEM_GETPID: 232 case SVR4_SEM_GETVAL: 233 switch (SCARG(uap, cmd)) { 234 case SVR4_SEM_GETZCNT: 235 SCARG(&ap, cmd) = GETZCNT; 236 break; 237 case SVR4_SEM_GETNCNT: 238 SCARG(&ap, cmd) = GETNCNT; 239 break; 240 case SVR4_SEM_GETPID: 241 SCARG(&ap, cmd) = GETPID; 242 break; 243 case SVR4_SEM_GETVAL: 244 SCARG(&ap, cmd) = GETVAL; 245 break; 246 } 247 return sys___semctl(p, &ap, retval); 248 249 case SVR4_SEM_SETVAL: 250 error = svr4_setsemun(&sg, &SCARG(&ap, arg), &SCARG(uap, arg)); 251 if (error) 252 return error; 253 SCARG(&ap, cmd) = SETVAL; 254 return sys___semctl(p, &ap, retval); 255 256 case SVR4_SEM_GETALL: 257 error = svr4_setsemun(&sg, &SCARG(&ap, arg), &SCARG(uap, arg)); 258 if (error) 259 return error; 260 SCARG(&ap, cmd) = GETVAL; 261 return sys___semctl(p, &ap, retval); 262 263 case SVR4_SEM_SETALL: 264 error = svr4_setsemun(&sg, &SCARG(&ap, arg), &SCARG(uap, arg)); 265 if (error) 266 return error; 267 SCARG(&ap, cmd) = SETVAL; 268 return sys___semctl(p, &ap, retval); 269 270 case SVR4_IPC_STAT: 271 SCARG(&ap, cmd) = IPC_STAT; 272 bsp = stackgap_alloc(&sg, sizeof(bs)); 273 error = svr4_setsemun(&sg, &SCARG(&ap, arg), 274 (union semun *)&bsp); 275 if (error) 276 return error; 277 if ((error = sys___semctl(p, &ap, retval)) != 0) 278 return error; 279 error = copyin((caddr_t)bsp, (caddr_t)&bs, sizeof(bs)); 280 if (error) 281 return error; 282 bsd_to_svr4_semid_ds(&bs, &ss); 283 return copyout(&ss, SCARG(uap, arg).buf, sizeof(ss)); 284 285 case SVR4_IPC_SET: 286 SCARG(&ap, cmd) = IPC_SET; 287 bsp = stackgap_alloc(&sg, sizeof(bs)); 288 error = svr4_setsemun(&sg, &SCARG(&ap, arg), 289 (union semun *)&bsp); 290 if (error) 291 return error; 292 error = copyin(SCARG(uap, arg).buf, (caddr_t) &ss, sizeof ss); 293 if (error) 294 return error; 295 svr4_to_bsd_semid_ds(&ss, &bs); 296 error = copyout(&bs, bsp, sizeof(bs)); 297 if (error) 298 return error; 299 return sys___semctl(p, &ap, retval); 300 301 case SVR4_IPC_RMID: 302 SCARG(&ap, cmd) = IPC_RMID; 303 bsp = stackgap_alloc(&sg, sizeof(bs)); 304 error = svr4_setsemun(&sg, &SCARG(&ap, arg), 305 (union semun *)&bsp); 306 if (error) 307 return error; 308 error = copyin(SCARG(uap, arg).buf, &ss, sizeof ss); 309 if (error) 310 return error; 311 svr4_to_bsd_semid_ds(&ss, &bs); 312 error = copyout(&bs, bsp, sizeof(bs)); 313 if (error) 314 return error; 315 return sys___semctl(p, &ap, retval); 316 317 default: 318 return EINVAL; 319 } 320 } 321 322 struct svr4_sys_semget_args { 323 syscallarg(int) what; 324 syscallarg(svr4_key_t) key; 325 syscallarg(int) nsems; 326 syscallarg(int) semflg; 327 }; 328 329 static int 330 svr4_semget(p, v, retval) 331 struct proc *p; 332 void *v; 333 register_t *retval; 334 { 335 struct svr4_sys_semget_args *uap = v; 336 struct sys_semget_args ap; 337 338 SCARG(&ap, key) = SCARG(uap, key); 339 SCARG(&ap, nsems) = SCARG(uap, nsems); 340 SCARG(&ap, semflg) = SCARG(uap, semflg); 341 342 return sys_semget(p, &ap, retval); 343 } 344 345 struct svr4_sys_semop_args { 346 syscallarg(int) what; 347 syscallarg(int) semid; 348 syscallarg(struct svr4_sembuf *) sops; 349 syscallarg(u_int) nsops; 350 }; 351 352 static int 353 svr4_semop(p, v, retval) 354 struct proc *p; 355 void *v; 356 register_t *retval; 357 { 358 struct svr4_sys_semop_args *uap = v; 359 struct sys_semop_args ap; 360 361 SCARG(&ap, semid) = SCARG(uap, semid); 362 /* These are the same */ 363 SCARG(&ap, sops) = (struct sembuf *) SCARG(uap, sops); 364 SCARG(&ap, nsops) = SCARG(uap, nsops); 365 366 return sys_semop(p, &ap, retval); 367 } 368 369 int 370 svr4_sys_semsys(p, v, retval) 371 struct proc *p; 372 void *v; 373 register_t *retval; 374 { 375 struct svr4_sys_semsys_args *uap = v; 376 377 DPRINTF(("svr4_semsys(%d)\n", SCARG(uap, what))); 378 379 switch (SCARG(uap, what)) { 380 case SVR4_semctl: 381 return svr4_semctl(p, v, retval); 382 case SVR4_semget: 383 return svr4_semget(p, v, retval); 384 case SVR4_semop: 385 return svr4_semop(p, v, retval); 386 default: 387 return EINVAL; 388 } 389 } 390 #endif 391 392 #ifdef SYSVMSG 393 static void 394 bsd_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 } 420 421 static void 422 svr4_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 } 448 449 struct svr4_sys_msgsnd_args { 450 syscallarg(int) what; 451 syscallarg(int) msqid; 452 syscallarg(void *) msgp; 453 syscallarg(size_t) msgsz; 454 syscallarg(int) msgflg; 455 }; 456 457 static int 458 svr4_msgsnd(p, v, retval) 459 struct proc *p; 460 void *v; 461 register_t *retval; 462 { 463 struct svr4_sys_msgsnd_args *uap = v; 464 struct sys_msgsnd_args ap; 465 466 SCARG(&ap, msqid) = SCARG(uap, msqid); 467 SCARG(&ap, msgp) = SCARG(uap, msgp); 468 SCARG(&ap, msgsz) = SCARG(uap, msgsz); 469 SCARG(&ap, msgflg) = SCARG(uap, msgflg); 470 471 return sys_msgsnd(p, &ap, retval); 472 } 473 474 struct svr4_sys_msgrcv_args { 475 syscallarg(int) what; 476 syscallarg(int) msqid; 477 syscallarg(void *) msgp; 478 syscallarg(size_t) msgsz; 479 syscallarg(long) msgtyp; 480 syscallarg(int) msgflg; 481 }; 482 483 static int 484 svr4_msgrcv(p, v, retval) 485 struct proc *p; 486 void *v; 487 register_t *retval; 488 { 489 struct svr4_sys_msgrcv_args *uap = v; 490 struct sys_msgrcv_args ap; 491 492 SCARG(&ap, msqid) = SCARG(uap, msqid); 493 SCARG(&ap, msgp) = SCARG(uap, msgp); 494 SCARG(&ap, msgsz) = SCARG(uap, msgsz); 495 SCARG(&ap, msgtyp) = SCARG(uap, msgtyp); 496 SCARG(&ap, msgflg) = SCARG(uap, msgflg); 497 498 return sys_msgrcv(p, &ap, retval); 499 } 500 501 struct svr4_sys_msgget_args { 502 syscallarg(int) what; 503 syscallarg(svr4_key_t) key; 504 syscallarg(int) msgflg; 505 }; 506 507 static int 508 svr4_msgget(p, v, retval) 509 struct proc *p; 510 void *v; 511 register_t *retval; 512 { 513 struct svr4_sys_msgget_args *uap = v; 514 struct sys_msgget_args ap; 515 516 SCARG(&ap, key) = SCARG(uap, key); 517 SCARG(&ap, msgflg) = SCARG(uap, msgflg); 518 519 return sys_msgget(p, &ap, retval); 520 } 521 522 struct svr4_sys_msgctl_args { 523 syscallarg(int) what; 524 syscallarg(int) msqid; 525 syscallarg(int) cmd; 526 syscallarg(struct svr4_msqid_ds *) buf; 527 }; 528 529 static int 530 svr4_msgctl(p, v, retval) 531 struct proc *p; 532 void *v; 533 register_t *retval; 534 { 535 int error; 536 struct svr4_sys_msgctl_args *uap = v; 537 struct sys_msgctl_args ap; 538 struct svr4_msqid_ds ss; 539 struct msqid_ds bs; 540 caddr_t sg = stackgap_init(p->p_emul); 541 542 SCARG(&ap, msqid) = SCARG(uap, msqid); 543 SCARG(&ap, cmd) = SCARG(uap, cmd); 544 SCARG(&ap, buf) = stackgap_alloc(&sg, sizeof(bs)); 545 546 switch (SCARG(uap, cmd)) { 547 case SVR4_IPC_STAT: 548 SCARG(&ap, cmd) = IPC_STAT; 549 if ((error = sys_msgctl(p, &ap, retval)) != 0) 550 return error; 551 error = copyin(&bs, SCARG(&ap, buf), sizeof bs); 552 if (error) 553 return error; 554 bsd_to_svr4_msqid_ds(&bs, &ss); 555 return copyout(&ss, SCARG(uap, buf), sizeof ss); 556 557 case SVR4_IPC_SET: 558 SCARG(&ap, cmd) = IPC_SET; 559 error = copyin(SCARG(uap, buf), &ss, sizeof ss); 560 if (error) 561 return error; 562 svr4_to_bsd_msqid_ds(&ss, &bs); 563 error = copyout(&bs, SCARG(&ap, buf), sizeof bs); 564 if (error) 565 return error; 566 return sys_msgctl(p, &ap, retval); 567 568 case SVR4_IPC_RMID: 569 SCARG(&ap, cmd) = IPC_RMID; 570 error = copyin(SCARG(uap, buf), &ss, sizeof ss); 571 if (error) 572 return error; 573 svr4_to_bsd_msqid_ds(&ss, &bs); 574 error = copyout(&bs, SCARG(&ap, buf), sizeof bs); 575 if (error) 576 return error; 577 return sys_msgctl(p, &ap, retval); 578 579 default: 580 return EINVAL; 581 } 582 } 583 584 int 585 svr4_sys_msgsys(p, v, retval) 586 struct proc *p; 587 void *v; 588 register_t *retval; 589 { 590 struct svr4_sys_msgsys_args *uap = v; 591 592 DPRINTF(("svr4_msgsys(%d)\n", SCARG(uap, what))); 593 594 switch (SCARG(uap, what)) { 595 case SVR4_msgsnd: 596 return svr4_msgsnd(p, v, retval); 597 case SVR4_msgrcv: 598 return svr4_msgrcv(p, v, retval); 599 case SVR4_msgget: 600 return svr4_msgget(p, v, retval); 601 case SVR4_msgctl: 602 return svr4_msgctl(p, v, retval); 603 default: 604 return EINVAL; 605 } 606 } 607 #endif 608 609 #ifdef SYSVSHM 610 611 static void 612 bsd_to_svr4_shmid_ds(bds, sds) 613 const struct shmid_ds *bds; 614 struct svr4_shmid_ds *sds; 615 { 616 bsd_to_svr4_ipc_perm(&bds->shm_perm, &sds->shm_perm); 617 sds->shm_segsz = bds->shm_segsz; 618 sds->shm_lkcnt = 0; 619 sds->shm_lpid = bds->shm_lpid; 620 sds->shm_cpid = bds->shm_cpid; 621 sds->shm_amp = bds->shm_internal; 622 sds->shm_nattch = bds->shm_nattch; 623 sds->shm_cnattch = 0; 624 sds->shm_atime = bds->shm_atime; 625 sds->shm_pad1 = 0; 626 sds->shm_dtime = bds->shm_dtime; 627 sds->shm_pad2 = 0; 628 sds->shm_ctime = bds->shm_ctime; 629 sds->shm_pad3 = 0; 630 } 631 632 static void 633 svr4_to_bsd_shmid_ds(sds, bds) 634 const struct svr4_shmid_ds *sds; 635 struct shmid_ds *bds; 636 { 637 svr4_to_bsd_ipc_perm(&sds->shm_perm, &bds->shm_perm); 638 bds->shm_segsz = sds->shm_segsz; 639 bds->shm_lpid = sds->shm_lpid; 640 bds->shm_cpid = sds->shm_cpid; 641 bds->shm_internal = sds->shm_amp; 642 bds->shm_nattch = sds->shm_nattch; 643 bds->shm_atime = sds->shm_atime; 644 bds->shm_dtime = sds->shm_dtime; 645 bds->shm_ctime = sds->shm_ctime; 646 } 647 648 struct svr4_sys_shmat_args { 649 syscallarg(int) what; 650 syscallarg(int) shmid; 651 syscallarg(void *) shmaddr; 652 syscallarg(int) shmflg; 653 }; 654 655 static int 656 svr4_shmat(p, v, retval) 657 struct proc *p; 658 void *v; 659 register_t *retval; 660 { 661 struct svr4_sys_shmat_args *uap = v; 662 struct sys_shmat_args ap; 663 664 SCARG(&ap, shmid) = SCARG(uap, shmid); 665 SCARG(&ap, shmaddr) = SCARG(uap, shmaddr); 666 SCARG(&ap, shmflg) = SCARG(uap, shmflg); 667 668 return sys_shmat(p, &ap, retval); 669 } 670 671 struct svr4_sys_shmdt_args { 672 syscallarg(int) what; 673 syscallarg(void *) shmaddr; 674 }; 675 676 static int 677 svr4_shmdt(p, v, retval) 678 struct proc *p; 679 void *v; 680 register_t *retval; 681 { 682 struct svr4_sys_shmdt_args *uap = v; 683 struct sys_shmdt_args ap; 684 685 SCARG(&ap, shmaddr) = SCARG(uap, shmaddr); 686 687 return sys_shmdt(p, &ap, retval); 688 } 689 690 struct svr4_sys_shmget_args { 691 syscallarg(int) what; 692 syscallarg(key_t) key; 693 syscallarg(int) size; 694 syscallarg(int) shmflg; 695 }; 696 697 static int 698 svr4_shmget(p, v, retval) 699 struct proc *p; 700 void *v; 701 register_t *retval; 702 { 703 struct svr4_sys_shmget_args *uap = v; 704 struct sys_shmget_args ap; 705 706 SCARG(&ap, key) = SCARG(uap, key); 707 SCARG(&ap, size) = SCARG(uap, size); 708 SCARG(&ap, shmflg) = SCARG(uap, shmflg); 709 710 return sys_shmget(p, &ap, retval); 711 } 712 713 struct svr4_sys_shmctl_args { 714 syscallarg(int) what; 715 syscallarg(int) shmid; 716 syscallarg(int) cmd; 717 syscallarg(struct svr4_shmid_ds *) buf; 718 }; 719 720 int 721 svr4_shmctl(p, v, retval) 722 struct proc *p; 723 void *v; 724 register_t *retval; 725 { 726 struct svr4_sys_shmctl_args *uap = v; 727 int error; 728 caddr_t sg = stackgap_init(p->p_emul); 729 struct sys_shmctl_args ap; 730 struct shmid_ds bs; 731 struct svr4_shmid_ds ss; 732 733 SCARG(&ap, shmid) = SCARG(uap, shmid); 734 735 if (SCARG(uap, buf) != NULL) { 736 SCARG(&ap, buf) = stackgap_alloc(&sg, sizeof (struct shmid_ds)); 737 switch (SCARG(uap, cmd)) { 738 case SVR4_IPC_SET: 739 case SVR4_IPC_RMID: 740 case SVR4_SHM_LOCK: 741 case SVR4_SHM_UNLOCK: 742 error = copyin(SCARG(uap, buf), (caddr_t) &ss, 743 sizeof ss); 744 if (error) 745 return error; 746 svr4_to_bsd_shmid_ds(&ss, &bs); 747 error = copyout(&bs, SCARG(&ap, buf), sizeof bs); 748 if (error) 749 return error; 750 break; 751 default: 752 break; 753 } 754 } 755 else 756 SCARG(&ap, buf) = NULL; 757 758 759 switch (SCARG(uap, cmd)) { 760 case SVR4_IPC_STAT: 761 SCARG(&ap, cmd) = IPC_STAT; 762 if ((error = sys_shmctl(p, &ap, retval)) != 0) 763 return error; 764 if (SCARG(uap, buf) == NULL) 765 return 0; 766 error = copyin(&bs, SCARG(&ap, buf), sizeof bs); 767 if (error) 768 return error; 769 bsd_to_svr4_shmid_ds(&bs, &ss); 770 return copyout(&ss, SCARG(uap, buf), sizeof ss); 771 772 case SVR4_IPC_SET: 773 SCARG(&ap, cmd) = IPC_SET; 774 return sys_shmctl(p, &ap, retval); 775 776 case SVR4_IPC_RMID: 777 case SVR4_SHM_LOCK: 778 case SVR4_SHM_UNLOCK: 779 switch (SCARG(uap, cmd)) { 780 case SVR4_IPC_RMID: 781 SCARG(&ap, cmd) = IPC_RMID; 782 break; 783 case SVR4_SHM_LOCK: 784 SCARG(&ap, cmd) = SHM_LOCK; 785 break; 786 case SVR4_SHM_UNLOCK: 787 SCARG(&ap, cmd) = SHM_UNLOCK; 788 break; 789 default: 790 return EINVAL; 791 } 792 return sys_shmctl(p, &ap, retval); 793 794 default: 795 return EINVAL; 796 } 797 } 798 799 int 800 svr4_sys_shmsys(p, v, retval) 801 struct proc *p; 802 void *v; 803 register_t *retval; 804 { 805 struct svr4_sys_shmsys_args *uap = v; 806 807 DPRINTF(("svr4_shmsys(%d)\n", SCARG(uap, what))); 808 809 switch (SCARG(uap, what)) { 810 case SVR4_shmat: 811 return svr4_shmat(p, v, retval); 812 case SVR4_shmdt: 813 return svr4_shmdt(p, v, retval); 814 case SVR4_shmget: 815 return svr4_shmget(p, v, retval); 816 case SVR4_shmctl: 817 return svr4_shmctl(p, v, retval); 818 default: 819 return ENOSYS; 820 } 821 } 822 #endif /* SYSVSHM */
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