ipc.c revision 34d6eabc451f16d5f168fc1595ee604f21bccc51
1/* 2 * Copyright (c) 1993 Ulrich Pegelow <pegelow@moorea.uni-muenster.de> 3 * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl> 4 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com> 5 * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl> 6 * All rights reserved. 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. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * $Id: ipc.c,v 1.10 2005/06/01 19:02:37 roland Exp $ 31 */ 32 33#include "defs.h" 34 35#if defined(LINUX) || defined(SUNOS4) || defined(FREEBSD) 36 37# ifdef HAVE_MQUEUE_H 38# include <mqueue.h> 39# endif 40 41#include <fcntl.h> 42#include <sys/ipc.h> 43#include <sys/sem.h> 44#include <sys/msg.h> 45#include <sys/shm.h> 46 47#ifndef MSG_STAT 48#define MSG_STAT 11 49#endif 50#ifndef MSG_INFO 51#define MSG_INFO 12 52#endif 53#ifndef SHM_STAT 54#define SHM_STAT 13 55#endif 56#ifndef SHM_INFO 57#define SHM_INFO 14 58#endif 59#ifndef SEM_STAT 60#define SEM_STAT 18 61#endif 62#ifndef SEM_INFO 63#define SEM_INFO 19 64#endif 65 66#if defined LINUX && !defined IPC_64 67# define IPC_64 0x100 68#endif 69 70extern const struct xlat openmodes[]; 71extern void printsigevent(struct tcb *tcp, long arg); 72 73static const struct xlat msgctl_flags[] = { 74 { IPC_RMID, "IPC_RMID" }, 75 { IPC_SET, "IPC_SET" }, 76 { IPC_STAT, "IPC_STAT" }, 77#ifdef LINUX 78 { IPC_INFO, "IPC_INFO" }, 79 { MSG_STAT, "MSG_STAT" }, 80 { MSG_INFO, "MSG_INFO" }, 81#endif /* LINUX */ 82 { 0, NULL }, 83}; 84 85static const struct xlat semctl_flags[] = { 86 { IPC_RMID, "IPC_RMID" }, 87 { IPC_SET, "IPC_SET" }, 88 { IPC_STAT, "IPC_STAT" }, 89#ifdef LINUX 90 { IPC_INFO, "IPC_INFO" }, 91 { SEM_STAT, "SEM_STAT" }, 92 { SEM_INFO, "SEM_INFO" }, 93#endif /* LINUX */ 94 { GETPID, "GETPID" }, 95 { GETVAL, "GETVAL" }, 96 { GETALL, "GETALL" }, 97 { GETNCNT, "GETNCNT" }, 98 { GETZCNT, "GETZCNT" }, 99 { SETVAL, "SETVAL" }, 100 { SETALL, "SETALL" }, 101 { 0, NULL }, 102}; 103 104static const struct xlat shmctl_flags[] = { 105 { IPC_RMID, "IPC_RMID" }, 106 { IPC_SET, "IPC_SET" }, 107 { IPC_STAT, "IPC_STAT" }, 108#ifdef LINUX 109 { IPC_INFO, "IPC_INFO" }, 110 { SHM_STAT, "SHM_STAT" }, 111 { SHM_INFO, "SHM_INFO" }, 112#endif /* LINUX */ 113#ifdef SHM_LOCK 114 { SHM_LOCK, "SHM_LOCK" }, 115#endif 116#ifdef SHM_UNLOCK 117 { SHM_UNLOCK, "SHM_UNLOCK" }, 118#endif 119 { 0, NULL }, 120}; 121 122static const struct xlat resource_flags[] = { 123 { IPC_CREAT, "IPC_CREAT" }, 124 { IPC_EXCL, "IPC_EXCL" }, 125 { IPC_NOWAIT, "IPC_NOWAIT" }, 126 { 0, NULL }, 127}; 128 129static const struct xlat shm_resource_flags[] = { 130 { IPC_CREAT, "IPC_CREAT" }, 131 { IPC_EXCL, "IPC_EXCL" }, 132#ifdef SHM_HUGETLB 133 { SHM_HUGETLB, "SHM_HUGETLB" }, 134#endif 135 { 0, NULL }, 136}; 137 138static const struct xlat shm_flags[] = { 139#ifdef LINUX 140 { SHM_REMAP, "SHM_REMAP" }, 141#endif /* LINUX */ 142 { SHM_RDONLY, "SHM_RDONLY" }, 143 { SHM_RND, "SHM_RND" }, 144 { 0, NULL }, 145}; 146 147static const struct xlat msg_flags[] = { 148 { MSG_NOERROR, "MSG_NOERROR" }, 149#ifdef LINUX 150 { MSG_EXCEPT, "MSG_EXCEPT" }, 151#endif /* LINUX */ 152 { IPC_NOWAIT, "IPC_NOWAIT" }, 153 { 0, NULL }, 154}; 155 156int sys_msgget(tcp) 157struct tcb *tcp; 158{ 159 if (entering(tcp)) { 160 if (tcp->u_arg[0]) 161 tprintf("%lu", tcp->u_arg[0]); 162 else 163 tprintf("IPC_PRIVATE"); 164 tprintf(", "); 165 if (printflags(resource_flags, tcp->u_arg[1] & ~0777, NULL) != 0) 166 tprintf("|"); 167 tprintf("%#lo", tcp->u_arg[1] & 0777); 168 } 169 return 0; 170} 171 172#ifdef IPC_64 173# define PRINTCTL(flagset, arg, dflt) \ 174 if ((arg) & IPC_64) tprintf("IPC_64|"); \ 175 printxval((flagset), (arg) &~ IPC_64, dflt) 176#else 177# define PRINTCTL printxval 178#endif 179 180int sys_msgctl(tcp) 181struct tcb *tcp; 182{ 183 if (entering(tcp)) { 184 tprintf("%lu, ", tcp->u_arg[0]); 185 PRINTCTL(msgctl_flags, tcp->u_arg[1], "MSG_???"); 186#ifdef LINUX 187 tprintf(", %#lx", tcp->u_arg[3]); 188#else /* !LINUX */ 189 tprintf(", %#lx", tcp->u_arg[2]); 190#endif /* !LINUX */ 191 } 192 return 0; 193} 194 195int sys_msgsnd(tcp) 196struct tcb *tcp; 197{ 198 long mtype; 199 200 if (entering(tcp)) { 201 tprintf("%lu", tcp->u_arg[0]); 202#ifdef LINUX 203 umove(tcp, tcp->u_arg[3], &mtype); 204 tprintf(", {%lu, ", mtype); 205 printstr(tcp, tcp->u_arg[3] + sizeof(long), 206 tcp->u_arg[1]); 207 tprintf("}, %lu", tcp->u_arg[1]); 208 tprintf(", "); 209 printflags(msg_flags, tcp->u_arg[2], "MSG_???"); 210#else /* !LINUX */ 211 umove(tcp, tcp->u_arg[1], &mtype); 212 tprintf(", {%lu, ", mtype); 213 printstr(tcp, tcp->u_arg[1] + sizeof(long), 214 tcp->u_arg[2]); 215 tprintf("}, %lu", tcp->u_arg[2]); 216 tprintf(", "); 217 printflags(msg_flags, tcp->u_arg[3], "MSG_???"); 218#endif /* !LINUX */ 219 } 220 return 0; 221} 222 223int sys_msgrcv(tcp) 224struct tcb *tcp; 225{ 226 long mtype; 227#ifdef LINUX 228 struct ipc_wrapper { 229 struct msgbuf *msgp; 230 long msgtyp; 231 } tmp; 232#endif 233 234 235 if (exiting(tcp)) { 236 tprintf("%lu", tcp->u_arg[0]); 237#ifdef LINUX 238 umove(tcp, tcp->u_arg[3], &tmp); 239 umove(tcp, (long) tmp.msgp, &mtype); 240 tprintf(", {%lu, ", mtype); 241 printstr(tcp, (long) (tmp.msgp) + sizeof(long), 242 tcp->u_arg[1]); 243 tprintf("}, %lu", tcp->u_arg[1]); 244 tprintf(", %ld", tmp.msgtyp); 245 tprintf(", "); 246 printflags(msg_flags, tcp->u_arg[2], "MSG_???"); 247#else /* !LINUX */ 248 umove(tcp, tcp->u_arg[1], &mtype); 249 tprintf(", {%lu, ", mtype); 250 printstr(tcp, tcp->u_arg[1] + sizeof(long), 251 tcp->u_arg[2]); 252 tprintf("}, %lu", tcp->u_arg[2]); 253 tprintf(", %ld", tcp->u_arg[3]); 254 tprintf(", "); 255 printflags(msg_flags, tcp->u_arg[4], "MSG_???"); 256#endif /* !LINUX */ 257 } 258 return 0; 259} 260 261int sys_semop(tcp) 262struct tcb *tcp; 263{ 264 if (entering(tcp)) { 265 tprintf("%lu", tcp->u_arg[0]); 266#ifdef LINUX 267 tprintf(", %#lx", tcp->u_arg[3]); 268 tprintf(", %lu", tcp->u_arg[1]); 269#else /* !LINUX */ 270 tprintf(", %#lx", tcp->u_arg[1]); 271 tprintf(", %lu", tcp->u_arg[2]); 272#endif /* !LINUX */ 273 } 274 return 0; 275} 276 277#ifdef LINUX 278int sys_semtimedop(tcp) 279struct tcb *tcp; 280{ 281 if (entering(tcp)) { 282 tprintf("%lu", tcp->u_arg[0]); 283 tprintf(", %#lx", tcp->u_arg[3]); 284 tprintf(", %lu, ", tcp->u_arg[1]); 285 printtv(tcp, tcp->u_arg[5]); 286 } 287 return 0; 288} 289#endif 290 291int sys_semget(tcp) 292struct tcb *tcp; 293{ 294 if (entering(tcp)) { 295 if (tcp->u_arg[0]) 296 tprintf("%lu", tcp->u_arg[0]); 297 else 298 tprintf("IPC_PRIVATE"); 299 tprintf(", %lu", tcp->u_arg[1]); 300 tprintf(", "); 301 if (printflags(resource_flags, tcp->u_arg[2] & ~0777, NULL) != 0) 302 tprintf("|"); 303 tprintf("%#lo", tcp->u_arg[2] & 0777); 304 } 305 return 0; 306} 307 308int sys_semctl(tcp) 309struct tcb *tcp; 310{ 311 if (entering(tcp)) { 312 tprintf("%lu", tcp->u_arg[0]); 313 tprintf(", %lu, ", tcp->u_arg[1]); 314 PRINTCTL(semctl_flags, tcp->u_arg[2], "SEM_???"); 315 tprintf(", %#lx", tcp->u_arg[3]); 316 } 317 return 0; 318} 319 320int sys_shmget(tcp) 321struct tcb *tcp; 322{ 323 if (entering(tcp)) { 324 if (tcp->u_arg[0]) 325 tprintf("%lu", tcp->u_arg[0]); 326 else 327 tprintf("IPC_PRIVATE"); 328 tprintf(", %lu", tcp->u_arg[1]); 329 tprintf(", "); 330 if (printflags(shm_resource_flags, tcp->u_arg[2] & ~0777, NULL) != 0) 331 tprintf("|"); 332 tprintf("%#lo", tcp->u_arg[2] & 0777); 333 } 334 return 0; 335} 336 337int sys_shmctl(tcp) 338struct tcb *tcp; 339{ 340 if (entering(tcp)) { 341 tprintf("%lu, ", tcp->u_arg[0]); 342 PRINTCTL(shmctl_flags, tcp->u_arg[1], "SHM_???"); 343#ifdef LINUX 344 tprintf(", %#lx", tcp->u_arg[3]); 345#else /* !LINUX */ 346 tprintf(", %#lx", tcp->u_arg[2]); 347#endif /* !LINUX */ 348 } 349 return 0; 350} 351 352int sys_shmat(tcp) 353struct tcb *tcp; 354{ 355#ifdef LINUX 356 unsigned long raddr; 357#endif /* LINUX */ 358 359 if (exiting(tcp)) { 360 tprintf("%lu", tcp->u_arg[0]); 361#ifdef LINUX 362 tprintf(", %#lx", tcp->u_arg[3]); 363 tprintf(", "); 364 printflags(shm_flags, tcp->u_arg[1], "SHM_???"); 365#else /* !LINUX */ 366 tprintf(", %#lx", tcp->u_arg[1]); 367 tprintf(", "); 368 printflags(shm_flags, tcp->u_arg[2], "SHM_???"); 369#endif /* !LINUX */ 370 if (syserror(tcp)) 371 return 0; 372#ifdef LINUX 373 if (umove(tcp, tcp->u_arg[2], &raddr) < 0) 374 return RVAL_NONE; 375 tcp->u_rval = raddr; 376#endif /* LINUX */ 377 return RVAL_HEX; 378 } 379 return 0; 380} 381 382int sys_shmdt(tcp) 383struct tcb *tcp; 384{ 385 if (entering(tcp)) 386#ifdef LINUX 387 tprintf("%#lx", tcp->u_arg[3]); 388#else /* !LINUX */ 389 tprintf("%#lx", tcp->u_arg[0]); 390#endif /* !LINUX */ 391 return 0; 392} 393 394#endif /* defined(LINUX) || defined(SUNOS4) || defined(FREEBSD) */ 395 396#ifdef LINUX 397int sys_mq_open(tcp) 398struct tcb *tcp; 399{ 400 if (entering(tcp)) { 401 printpath(tcp, tcp->u_arg[0]); 402 tprintf(", "); 403 /* flags */ 404 printflags(openmodes, tcp->u_arg[1] + 1, "O_???"); 405 if (tcp->u_arg[1] & O_CREAT) { 406# ifndef HAVE_MQUEUE_H 407 tprintf(", %lx", tcp->u_arg[2]); 408# else 409 struct mq_attr attr; 410 /* mode */ 411 tprintf(", %#lo, ", tcp->u_arg[2]); 412 if (umove(tcp, tcp->u_arg[3], &attr) < 0) 413 tprintf("{ ??? }"); 414 else 415 tprintf("{mq_maxmsg=%ld, mq_msgsize=%ld}", 416 attr.mq_maxmsg, attr.mq_msgsize); 417# endif 418 } 419 } 420 return 0; 421} 422 423int sys_mq_timedsend(tcp) 424struct tcb *tcp; 425{ 426 if (entering(tcp)) { 427 tprintf("%ld, ", tcp->u_arg[0]); 428 printstr(tcp, tcp->u_arg[1], tcp->u_arg[2]); 429 tprintf(", %lu, %ld, ", tcp->u_arg[2], tcp->u_arg[3]); 430 printtv(tcp, tcp->u_arg[4]); 431 } 432 return 0; 433} 434 435int sys_mq_timedreceive(tcp) 436struct tcb *tcp; 437{ 438 if (entering(tcp)) 439 tprintf("%ld, ", tcp->u_arg[0]); 440 else { 441 printstr(tcp, tcp->u_arg[1], tcp->u_arg[2]); 442 tprintf(", %lu, %ld, ", tcp->u_arg[2], tcp->u_arg[3]); 443 printtv(tcp, tcp->u_arg[4]); 444 } 445 return 0; 446} 447 448int sys_mq_notify(tcp) 449struct tcb *tcp; 450{ 451 if (entering(tcp)) { 452 tprintf("%ld, ", tcp->u_arg[0]); 453 printsigevent(tcp, tcp->u_arg[1]); 454 } 455 return 0; 456} 457 458static void printmqattr(tcp, addr) 459struct tcb *tcp; 460long addr; 461{ 462 if (addr == 0) 463 tprintf("NULL"); 464 else { 465# ifndef HAVE_MQUEUE_H 466 tprintf("%#lx", addr); 467# else 468 struct mq_attr attr; 469 if (umove(tcp, addr, &attr) < 0) { 470 tprintf("{...}"); 471 return; 472 } 473 tprintf("{mq_flags="); 474 printflags(openmodes, attr.mq_flags + 1, "O_???"); 475 tprintf(", mq_maxmsg=%ld, mq_msgsize=%ld, mq_curmsg=%ld}", 476 attr.mq_maxmsg, attr.mq_msgsize, attr.mq_curmsgs); 477# endif 478 } 479} 480 481int sys_mq_getsetattr(tcp) 482struct tcb *tcp; 483{ 484 if (entering(tcp)) { 485 tprintf("%ld, ", tcp->u_arg[0]); 486 printmqattr(tcp, tcp->u_arg[1]); 487 tprintf(", "); 488 } else 489 printmqattr(tcp, tcp->u_arg[2]); 490 return 0; 491} 492#endif 493