1 /* 2 * Copyright (c) 1994 SigmaSoft, Th. Lockert <tholo@sigmasoft.com> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 17 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 18 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 19 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 * $Id: ipcs.c,v 1.2 1994/09/13 16:59:29 dfr Exp $ 28 */ 29 30 #include <stdio.h> 31 #include <stdlib.h> 32 #include <unistd.h> 33 #include <fcntl.h> 34 #include <paths.h> 35 #include <nlist.h> 36 #include <kvm.h> 37 #include <err.h> 38 39 #include <sys/types.h> 40 #include <sys/param.h> 41 #include <sys/time.h> 42 #include <sys/proc.h> 43 #define KERNEL 44 #include <sys/ipc.h> 45 #include <sys/sem.h> 46 #include <sys/shm.h> 47 #include <sys/msg.h> 48 49 struct shminfo shminfo; 50 struct seminfo seminfo; 51 struct msginfo msginfo; 52 53 int semconfig __P((int,...)); 54 void usage __P((void)); 55 56 static struct nlist symbols[] = { 57 {"_sema"}, 58 #define X_SEMA 0 59 {"_seminfo"}, 60 #define X_SEMINFO 1 61 {"_semu"}, 62 #define X_SEMU 2 63 {"_msginfo"}, 64 #define X_MSGINFO 3 65 {"_msqids"}, 66 #define X_MSQIDS 4 67 {"_shminfo"}, 68 #define X_SHMINFO 5 69 {"_shmsegs"}, 70 #define X_SHMSEGS 6 71 {NULL} 72 }; 73 74 static kvm_t *kd; 75 76 char * 77 fmt_perm(mode) 78 u_short mode; 79 { 80 static char buffer[100]; 81 82 buffer[0] = '-'; 83 buffer[1] = '-'; 84 buffer[2] = ((mode & 0400) ? 'r' : '-'); 85 buffer[3] = ((mode & 0200) ? 'w' : '-'); 86 buffer[4] = ((mode & 0100) ? 'a' : '-'); 87 buffer[5] = ((mode & 0040) ? 'r' : '-'); 88 buffer[6] = ((mode & 0020) ? 'w' : '-'); 89 buffer[7] = ((mode & 0010) ? 'a' : '-'); 90 buffer[8] = ((mode & 0004) ? 'r' : '-'); 91 buffer[9] = ((mode & 0002) ? 'w' : '-'); 92 buffer[10] = ((mode & 0001) ? 'a' : '-'); 93 buffer[11] = '\0'; 94 return (&buffer[0]); 95 } 96 97 void 98 cvt_time(t, buf) 99 time_t t; 100 char *buf; 101 { 102 struct tm *tm; 103 104 if (t == 0) { 105 strcpy(buf, "no-entry"); 106 } else { 107 tm = localtime(&t); 108 sprintf(buf, "%2d:%02d:%02d", 109 tm->tm_hour, tm->tm_min, tm->tm_sec); 110 } 111 } 112 #define SHMINFO 1 113 #define SHMTOTAL 2 114 #define MSGINFO 4 115 #define MSGTOTAL 8 116 #define SEMINFO 16 117 #define SEMTOTAL 32 118 119 #define BIGGEST 1 120 #define CREATOR 2 121 #define OUTSTANDING 4 122 #define PID 8 123 #define TIME 16 124 125 int 126 main(argc, argv) 127 int argc; 128 char *argv[]; 129 { 130 int display = SHMINFO | MSGINFO | SEMINFO; 131 int option = 0; 132 char *core = NULL, *namelist = NULL; 133 int i; 134 135 while ((i = getopt(argc, argv, "MmQqSsabC:cN:optT")) != EOF) 136 switch (i) { 137 case 'M': 138 display = SHMTOTAL; 139 break; 140 case 'm': 141 display = SHMINFO; 142 break; 143 case 'Q': 144 display = MSGTOTAL; 145 break; 146 case 'q': 147 display = MSGINFO; 148 break; 149 case 'S': 150 display = SEMTOTAL; 151 break; 152 case 's': 153 display = SEMINFO; 154 break; 155 case 'T': 156 display = SHMTOTAL | MSGTOTAL | SEMTOTAL; 157 break; 158 case 'a': 159 option |= BIGGEST | CREATOR | OUTSTANDING | PID | TIME; 160 break; 161 case 'b': 162 option |= BIGGEST; 163 break; 164 case 'C': 165 core = optarg; 166 break; 167 case 'c': 168 option |= CREATOR; 169 break; 170 case 'N': 171 namelist = optarg; 172 break; 173 case 'o': 174 option |= OUTSTANDING; 175 break; 176 case 'p': 177 option |= PID; 178 break; 179 case 't': 180 option |= TIME; 181 break; 182 default: 183 usage(); 184 } 185 if ((kd = kvm_open(namelist, core, NULL, O_RDONLY, "ipcs")) == NULL) 186 exit(1); 187 188 switch (kvm_nlist(kd, symbols)) { 189 case 0: 190 break; 191 case -1: 192 errx(1, "unable to read kernel symbol table."); 193 default: 194 #ifdef notdef /* they'll be told more civilly later */ 195 warnx("nlist failed"); 196 for (i = 0; symbols[i].n_name != NULL; i++) 197 if (symbols[i].n_value == 0) 198 warnx("symbol %s not found", 199 symbols[i].n_name); 200 break; 201 #endif 202 } 203 204 if ((display & (MSGINFO | MSGTOTAL)) && 205 kvm_read(kd, symbols[X_MSGINFO].n_value, &msginfo, sizeof(msginfo))) { 206 207 if (display & MSGTOTAL) { 208 printf("msginfo:\n"); 209 printf("\tmsgmax: %6d\t(max characters in a message)\n", 210 msginfo.msgmax); 211 printf("\tmsgmni: %6d\t(# of message queues)\n", 212 msginfo.msgmni); 213 printf("\tmsgmnb: %6d\t(max characters in a message queue)\n", 214 msginfo.msgmnb); 215 printf("\tmsgtql: %6d\t(max # of messages in system)\n", 216 msginfo.msgtql); 217 printf("\tmsgssz: %6d\t(size of a message segment)\n", 218 msginfo.msgssz); 219 printf("\tmsgseg: %6d\t(# of message segments in system)\n\n", 220 msginfo.msgseg); 221 } 222 if (display & MSGINFO) { 223 struct msqid_ds *xmsqids; 224 225 kvm_read(kd, symbols[X_MSQIDS].n_value, &msqids, sizeof(msqids)); 226 xmsqids = malloc(sizeof(struct msqid_ds) * msginfo.msgmni); 227 kvm_read(kd, (u_long) msqids, xmsqids, sizeof(struct msqid_ds) * msginfo.msgmni); 228 229 printf("Message Queues:\n"); 230 printf("T ID KEY MODE OWNER GROUP"); 231 if (option & CREATOR) 232 printf(" CREATOR CGROUP"); 233 if (option & OUTSTANDING) 234 printf(" CBYTES QNUM"); 235 if (option & BIGGEST) 236 printf(" QBYTES"); 237 if (option & PID) 238 printf(" LSPID LRPID"); 239 if (option & TIME) 240 printf(" STIME RTIME CTIME"); 241 printf("\n"); 242 for (i = 0; i < msginfo.msgmni; i += 1) { 243 if (xmsqids[i].msg_qbytes != 0) { 244 char stime_buf[100], rtime_buf[100], 245 ctime_buf[100]; 246 struct msqid_ds *msqptr = &xmsqids[i]; 247 248 cvt_time(msqptr->msg_stime, stime_buf); 249 cvt_time(msqptr->msg_rtime, rtime_buf); 250 cvt_time(msqptr->msg_ctime, ctime_buf); 251 252 printf("q %6d %10d %s %8s %8s", 253 IXSEQ_TO_IPCID(i, msqptr->msg_perm), 254 msqptr->msg_perm.key, 255 fmt_perm(msqptr->msg_perm.mode), 256 user_from_uid(msqptr->msg_perm.uid, 0), 257 group_from_gid(msqptr->msg_perm.gid, 0)); 258 259 if (option & CREATOR) 260 printf(" %8s %8s", 261 user_from_uid(msqptr->msg_perm.cuid, 0), 262 group_from_gid(msqptr->msg_perm.cgid, 0)); 263 264 if (option & OUTSTANDING) 265 printf(" %6d %6d", 266 msqptr->msg_cbytes, 267 msqptr->msg_qnum); 268 269 if (option & BIGGEST) 270 printf(" %6d", 271 msqptr->msg_qbytes); 272 273 if (option & PID) 274 printf(" %6d %6d", 275 msqptr->msg_lspid, 276 msqptr->msg_lrpid); 277 278 if (option & TIME) 279 printf("%s %s %s", 280 stime_buf, 281 rtime_buf, 282 ctime_buf); 283 284 printf("\n"); 285 } 286 } 287 printf("\n"); 288 } 289 } else 290 if (display & (MSGINFO | MSGTOTAL)) { 291 fprintf(stderr, 292 "SVID messages facility not configured in the system\n"); 293 } 294 if ((display & (SHMINFO | SHMTOTAL)) && 295 kvm_read(kd, symbols[X_SHMINFO].n_value, &shminfo, sizeof(shminfo))) { 296 if (display & SHMTOTAL) { 297 printf("shminfo:\n"); 298 printf("\tshmmax: %7d\t(max shared memory segment size)\n", 299 shminfo.shmmax); 300 printf("\tshmmin: %7d\t(min shared memory segment size)\n", 301 shminfo.shmmin); 302 printf("\tshmmni: %7d\t(max number of shared memory identifiers)\n", 303 shminfo.shmmni); 304 printf("\tshmseg: %7d\t(max shared memory segments per process)\n", 305 shminfo.shmseg); 306 printf("\tshmall: %7d\t(max amount of shared memory in pages)\n\n", 307 shminfo.shmall); 308 } 309 if (display & SHMINFO) { 310 struct shmid_ds *xshmids; 311 312 kvm_read(kd, symbols[X_SHMSEGS].n_value, &shmsegs, sizeof(shmsegs)); 313 xshmids = malloc(sizeof(struct shmid_ds) * msginfo.msgmni); 314 kvm_read(kd, (u_long) shmsegs, xshmids, sizeof(struct shmid_ds) * 315 shminfo.shmmni); 316 317 printf("Shared Memory:\n"); 318 printf("T ID KEY MODE OWNER GROUP"); 319 if (option & CREATOR) 320 printf(" CREATOR CGROUP"); 321 if (option & OUTSTANDING) 322 printf(" NATTCH"); 323 if (option & BIGGEST) 324 printf(" SEGSZ"); 325 if (option & PID) 326 printf(" CPID LPID"); 327 if (option & TIME) 328 printf(" ATIME DTIME CTIME"); 329 printf("\n"); 330 for (i = 0; i < shminfo.shmmni; i += 1) { 331 if (xshmids[i].shm_perm.mode & 0x0800) { 332 char atime_buf[100], dtime_buf[100], 333 ctime_buf[100]; 334 struct shmid_ds *shmptr = &xshmids[i]; 335 336 cvt_time(shmptr->shm_atime, atime_buf); 337 cvt_time(shmptr->shm_dtime, dtime_buf); 338 cvt_time(shmptr->shm_ctime, ctime_buf); 339 340 printf("m %6d %10d %s %8s %8s", 341 IXSEQ_TO_IPCID(i, shmptr->shm_perm), 342 shmptr->shm_perm.key, 343 fmt_perm(shmptr->shm_perm.mode), 344 user_from_uid(shmptr->shm_perm.uid, 0), 345 group_from_gid(shmptr->shm_perm.gid, 0)); 346 347 if (option & CREATOR) 348 printf(" %8s %8s", 349 user_from_uid(shmptr->shm_perm.cuid, 0), 350 group_from_gid(shmptr->shm_perm.cgid, 0)); 351 352 if (option & OUTSTANDING) 353 printf(" %6d", 354 shmptr->shm_nattch); 355 356 if (option & BIGGEST) 357 printf(" %6d", 358 shmptr->shm_segsz); 359 360 if (option & PID) 361 printf(" %6d %6d", 362 shmptr->shm_cpid, 363 shmptr->shm_lpid); 364 365 if (option & TIME) 366 printf("%s %s %s", 367 atime_buf, 368 dtime_buf, 369 ctime_buf); 370 371 printf("\n"); 372 } 373 } 374 printf("\n"); 375 } 376 } else 377 if (display & (SHMINFO | SHMTOTAL)) { 378 fprintf(stderr, 379 "SVID shared memory facility not configured in the system\n"); 380 } 381 if ((display & (SEMINFO | SEMTOTAL)) && 382 kvm_read(kd, symbols[X_SEMINFO].n_value, &seminfo, sizeof(seminfo))) { 383 struct semid_ds *xsema; 384 385 if (display & SEMTOTAL) { 386 printf("seminfo:\n"); 387 printf("\tsemmap: %6d\t(# of entries in semaphore map)\n", 388 seminfo.semmap); 389 printf("\tsemmni: %6d\t(# of semaphore identifiers)\n", 390 seminfo.semmni); 391 printf("\tsemmns: %6d\t(# of semaphores in system)\n", 392 seminfo.semmns); 393 printf("\tsemmnu: %6d\t(# of undo structures in system)\n", 394 seminfo.semmnu); 395 printf("\tsemmsl: %6d\t(max # of semaphores per id)\n", 396 seminfo.semmsl); 397 printf("\tsemopm: %6d\t(max # of operations per semop call)\n", 398 seminfo.semopm); 399 printf("\tsemume: %6d\t(max # of undo entries per process)\n", 400 seminfo.semume); 401 printf("\tsemusz: %6d\t(size in bytes of undo structure)\n", 402 seminfo.semusz); 403 printf("\tsemvmx: %6d\t(semaphore maximum value)\n", 404 seminfo.semvmx); 405 printf("\tsemaem: %6d\t(adjust on exit max value)\n\n", 406 seminfo.semaem); 407 } 408 if (display & SEMINFO) { 409 if (semconfig(SEM_CONFIG_FREEZE) != 0) { 410 perror("semconfig"); 411 fprintf(stderr, 412 "Can't lock semaphore facility - winging it...\n"); 413 } 414 kvm_read(kd, symbols[X_SEMA].n_value, &sema, sizeof(sema)); 415 xsema = malloc(sizeof(struct semid_ds) * seminfo.semmni); 416 kvm_read(kd, (u_long) sema, xsema, sizeof(struct semid_ds) * seminfo.semmni); 417 418 printf("Semaphores:\n"); 419 printf("T ID KEY MODE OWNER GROUP"); 420 if (option & CREATOR) 421 printf(" CREATOR CGROUP"); 422 if (option & BIGGEST) 423 printf(" NSEMS"); 424 if (option & TIME) 425 printf(" OTIME CTIME"); 426 printf("\n"); 427 for (i = 0; i < seminfo.semmni; i += 1) { 428 if ((xsema[i].sem_perm.mode & SEM_ALLOC) != 0) { 429 char ctime_buf[100], otime_buf[100]; 430 struct semid_ds *semaptr = &xsema[i]; 431 int j, value; 432 union semun junk; 433 434 cvt_time(semaptr->sem_otime, otime_buf); 435 cvt_time(semaptr->sem_ctime, ctime_buf); 436 437 printf("s %6d %10d %s %8s %8s", 438 IXSEQ_TO_IPCID(i, semaptr->sem_perm), 439 semaptr->sem_perm.key, 440 fmt_perm(semaptr->sem_perm.mode), 441 user_from_uid(semaptr->sem_perm.uid, 0), 442 group_from_gid(semaptr->sem_perm.gid, 0)); 443 444 if (option & CREATOR) 445 printf(" %8s %8s", 446 user_from_uid(semaptr->sem_perm.cuid, 0), 447 group_from_gid(semaptr->sem_perm.cgid, 0)); 448 449 if (option & BIGGEST) 450 printf(" %6d", 451 semaptr->sem_nsems); 452 453 if (option & TIME) 454 printf("%s %s", 455 otime_buf, 456 ctime_buf); 457 458 printf("\n"); 459 } 460 } 461 462 (void) semconfig(SEM_CONFIG_THAW); 463 464 printf("\n"); 465 } 466 } else 467 if (display & (SEMINFO | SEMTOTAL)) { 468 fprintf(stderr, "SVID semaphores facility not configured in the system\n"); 469 } 470 kvm_close(kd); 471 472 exit(0); 473 } 474 475 void 476 usage() 477 { 478 479 fprintf(stderr, 480 "usage: ipcs [-abcmopqst] [-C corefile] [-N namelist]\n"); 481 exit(1); 482 } 483