ipcs.c revision 1.6
1 /* 2 * Copyright (c) 1994 SigmaSoft, Th. Lockert <tholo (at) 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 1.6 1994/06/18 22:05:08 cgd 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/proc.h> 42 #define KERNEL 43 #include <sys/ipc.h> 44 #include <sys/sem.h> 45 #include <sys/shm.h> 46 #include <sys/msg.h> 47 48 int semconfig __P((int,...)); 49 void usage __P((void)); 50 51 static struct nlist symbols[] = { 52 {"_sema"}, 53 #define X_SEMA 0 54 {"_seminfo"}, 55 #define X_SEMINFO 1 56 {"_semu"}, 57 #define X_SEMU 2 58 {"_msginfo"}, 59 #define X_MSGINFO 3 60 {"_msqids"}, 61 #define X_MSQIDS 4 62 {"_shminfo"}, 63 #define X_SHMINFO 5 64 {"_shmsegs"}, 65 #define X_SHMSEGS 6 66 {NULL} 67 }; 68 69 static kvm_t *kd; 70 71 char * 72 fmt_perm(mode) 73 u_short mode; 74 { 75 static char buffer[100]; 76 77 buffer[0] = '-'; 78 buffer[1] = '-'; 79 buffer[2] = ((mode & 0400) ? 'r' : '-'); 80 buffer[3] = ((mode & 0200) ? 'w' : '-'); 81 buffer[4] = ((mode & 0100) ? 'a' : '-'); 82 buffer[5] = ((mode & 0040) ? 'r' : '-'); 83 buffer[6] = ((mode & 0020) ? 'w' : '-'); 84 buffer[7] = ((mode & 0010) ? 'a' : '-'); 85 buffer[8] = ((mode & 0004) ? 'r' : '-'); 86 buffer[9] = ((mode & 0002) ? 'w' : '-'); 87 buffer[10] = ((mode & 0001) ? 'a' : '-'); 88 buffer[11] = '\0'; 89 return (&buffer[0]); 90 } 91 92 void 93 cvt_time(t, buf) 94 time_t t; 95 char *buf; 96 { 97 struct tm *tm; 98 99 if (t == 0) { 100 strcpy(buf, "no-entry"); 101 } else { 102 tm = localtime(&t); 103 sprintf(buf, "%2d:%02d:%02d", 104 tm->tm_hour, tm->tm_min, tm->tm_sec); 105 } 106 } 107 #define SHMINFO 1 108 #define SHMTOTAL 2 109 #define MSGINFO 4 110 #define MSGTOTAL 8 111 #define SEMINFO 16 112 #define SEMTOTAL 32 113 114 #define BIGGEST 1 115 #define CREATOR 2 116 #define OUTSTANDING 4 117 #define PID 8 118 #define TIME 16 119 120 int 121 main(argc, argv) 122 int argc; 123 char *argv[]; 124 { 125 int display = SHMINFO | MSGINFO | SEMINFO; 126 int option = 0; 127 char *core = NULL, *namelist = NULL; 128 int i; 129 130 while ((i = getopt(argc, argv, "MmQqSsabC:cN:optT")) != EOF) 131 switch (i) { 132 case 'M': 133 display = SHMTOTAL; 134 break; 135 case 'm': 136 display = SHMINFO; 137 break; 138 case 'Q': 139 display = MSGTOTAL; 140 break; 141 case 'q': 142 display = MSGINFO; 143 break; 144 case 'S': 145 display = SEMTOTAL; 146 break; 147 case 's': 148 display = SEMINFO; 149 break; 150 case 'T': 151 display = SHMTOTAL | MSGTOTAL | SEMTOTAL; 152 break; 153 case 'a': 154 option |= BIGGEST | CREATOR | OUTSTANDING | PID | TIME; 155 break; 156 case 'b': 157 option |= BIGGEST; 158 break; 159 case 'C': 160 core = optarg; 161 break; 162 case 'c': 163 option |= CREATOR; 164 break; 165 case 'N': 166 namelist = optarg; 167 break; 168 case 'o': 169 option |= OUTSTANDING; 170 break; 171 case 'p': 172 option |= PID; 173 break; 174 case 't': 175 option |= TIME; 176 break; 177 default: 178 usage(); 179 } 180 if ((kd = kvm_open(namelist, core, NULL, O_RDONLY, "ipcs")) == NULL) 181 exit(1); 182 183 switch (kvm_nlist(kd, symbols)) { 184 case 0: 185 break; 186 case -1: 187 errx(1, "unable to read kernel symbol table."); 188 default: 189 #ifdef notdef /* they'll be told more civilly later */ 190 warnx("nlist failed"); 191 for (i = 0; symbols[i].n_name != NULL; i++) 192 if (symbols[i].n_value == 0) 193 warnx("symbol %s not found", 194 symbols[i].n_name); 195 break; 196 #endif 197 } 198 199 if ((display & (MSGINFO | MSGTOTAL)) && 200 kvm_read(kd, symbols[X_MSGINFO].n_value, &msginfo, sizeof(msginfo))) { 201 202 if (display & MSGTOTAL) { 203 printf("msginfo:\n"); 204 printf("\tmsgmax: %6d\t(max characters in a message)\n", 205 msginfo.msgmax); 206 printf("\tmsgmni: %6d\t(# of message queues)\n", 207 msginfo.msgmni); 208 printf("\tmsgmnb: %6d\t(max characters in a message queue)\n", 209 msginfo.msgmnb); 210 printf("\tmsgtql: %6d\t(max # of messages in system)\n", 211 msginfo.msgtql); 212 printf("\tmsgssz: %6d\t(size of a message segment)\n", 213 msginfo.msgssz); 214 printf("\tmsgseg: %6d\t(# of message segments in system)\n\n", 215 msginfo.msgseg); 216 } 217 if (display & MSGINFO) { 218 struct msqid_ds *xmsqids; 219 220 kvm_read(kd, symbols[X_MSQIDS].n_value, &msqids, sizeof(msqids)); 221 xmsqids = malloc(sizeof(struct msqid_ds) * msginfo.msgmni); 222 kvm_read(kd, (u_long) msqids, xmsqids, sizeof(struct msqid_ds) * msginfo.msgmni); 223 224 printf("Message Queues:\n"); 225 printf("T ID KEY MODE OWNER GROUP"); 226 if (option & CREATOR) 227 printf(" CREATOR CGROUP"); 228 if (option & OUTSTANDING) 229 printf(" CBYTES QNUM"); 230 if (option & BIGGEST) 231 printf(" QBYTES"); 232 if (option & PID) 233 printf(" LSPID LRPID"); 234 if (option & TIME) 235 printf(" STIME RTIME CTIME"); 236 printf("\n"); 237 for (i = 0; i < msginfo.msgmni; i += 1) { 238 if (xmsqids[i].msg_qbytes != 0) { 239 char stime_buf[100], rtime_buf[100], 240 ctime_buf[100]; 241 struct msqid_ds *msqptr = &xmsqids[i]; 242 243 cvt_time(msqptr->msg_stime, stime_buf); 244 cvt_time(msqptr->msg_rtime, rtime_buf); 245 cvt_time(msqptr->msg_ctime, ctime_buf); 246 247 printf("q %6d %10d %s %8s %8s", 248 IXSEQ_TO_IPCID(i, msqptr->msg_perm), 249 msqptr->msg_perm.key, 250 fmt_perm(msqptr->msg_perm.mode), 251 user_from_uid(msqptr->msg_perm.uid, 0), 252 group_from_gid(msqptr->msg_perm.gid, 0)); 253 254 if (option & CREATOR) 255 printf(" %8s %8s", 256 user_from_uid(msqptr->msg_perm.cuid, 0), 257 group_from_gid(msqptr->msg_perm.cgid, 0)); 258 259 if (option & OUTSTANDING) 260 printf(" %6d %6d", 261 msqptr->msg_cbytes, 262 msqptr->msg_qnum); 263 264 if (option & BIGGEST) 265 printf(" %6d", 266 msqptr->msg_qbytes); 267 268 if (option & PID) 269 printf(" %6d %6d", 270 msqptr->msg_lspid, 271 msqptr->msg_lrpid); 272 273 if (option & TIME) 274 printf("%s %s %s", 275 stime_buf, 276 rtime_buf, 277 ctime_buf); 278 279 printf("\n"); 280 } 281 } 282 printf("\n"); 283 } 284 } else 285 if (display & (MSGINFO | MSGTOTAL)) { 286 fprintf(stderr, 287 "SVID messages facility not configured in the system\n"); 288 } 289 if ((display & (SHMINFO | SHMTOTAL)) && 290 kvm_read(kd, symbols[X_SHMINFO].n_value, &shminfo, sizeof(shminfo))) { 291 if (display & SHMTOTAL) { 292 printf("shminfo:\n"); 293 printf("\tshmmax: %7d\t(max shared memory segment size)\n", 294 shminfo.shmmax); 295 printf("\tshmmin: %7d\t(min shared memory segment size)\n", 296 shminfo.shmmin); 297 printf("\tshmmni: %7d\t(max number of shared memory identifiers)\n", 298 shminfo.shmmni); 299 printf("\tshmseg: %7d\t(max shared memory segments per process)\n", 300 shminfo.shmseg); 301 printf("\tshmall: %7d\t(max amount of shared memory in pages)\n\n", 302 shminfo.shmall); 303 } 304 if (display & SHMINFO) { 305 struct shmid_ds *xshmids; 306 307 kvm_read(kd, symbols[X_SHMSEGS].n_value, &shmsegs, sizeof(shmsegs)); 308 xshmids = malloc(sizeof(struct shmid_ds) * msginfo.msgmni); 309 kvm_read(kd, (u_long) shmsegs, xshmids, sizeof(struct shmid_ds) * 310 shminfo.shmmni); 311 312 printf("Shared Memory:\n"); 313 printf("T ID KEY MODE OWNER GROUP"); 314 if (option & CREATOR) 315 printf(" CREATOR CGROUP"); 316 if (option & OUTSTANDING) 317 printf(" NATTCH"); 318 if (option & BIGGEST) 319 printf(" SEGSZ"); 320 if (option & PID) 321 printf(" CPID LPID"); 322 if (option & TIME) 323 printf(" ATIME DTIME CTIME"); 324 printf("\n"); 325 for (i = 0; i < shminfo.shmmni; i += 1) { 326 if (xshmids[i].shm_perm.mode & 0x0800) { 327 char atime_buf[100], dtime_buf[100], 328 ctime_buf[100]; 329 struct shmid_ds *shmptr = &xshmids[i]; 330 331 cvt_time(shmptr->shm_atime, atime_buf); 332 cvt_time(shmptr->shm_dtime, dtime_buf); 333 cvt_time(shmptr->shm_ctime, ctime_buf); 334 335 printf("q %6d %10d %s %8s %8s", 336 IXSEQ_TO_IPCID(i, shmptr->shm_perm), 337 shmptr->shm_perm.key, 338 fmt_perm(shmptr->shm_perm.mode), 339 user_from_uid(shmptr->shm_perm.uid, 0), 340 group_from_gid(shmptr->shm_perm.gid, 0)); 341 342 if (option & CREATOR) 343 printf(" %8s %8s", 344 user_from_uid(shmptr->shm_perm.cuid, 0), 345 group_from_gid(shmptr->shm_perm.cgid, 0)); 346 347 if (option & OUTSTANDING) 348 printf(" %6d", 349 shmptr->shm_nattch); 350 351 if (option & BIGGEST) 352 printf(" %6d", 353 shmptr->shm_segsz); 354 355 if (option & PID) 356 printf(" %6d %6d", 357 shmptr->shm_cpid, 358 shmptr->shm_lpid); 359 360 if (option & TIME) 361 printf("%s %s %s", 362 atime_buf, 363 dtime_buf, 364 ctime_buf); 365 366 printf("\n"); 367 } 368 } 369 printf("\n"); 370 } 371 } else 372 if (display & (SHMINFO | SHMTOTAL)) { 373 fprintf(stderr, 374 "SVID shared memory facility not configured in the system\n"); 375 } 376 if ((display & (SEMINFO | SEMTOTAL)) && 377 kvm_read(kd, symbols[X_SEMINFO].n_value, &seminfo, sizeof(seminfo))) { 378 struct semid_ds *xsema; 379 380 if (display & SEMTOTAL) { 381 printf("seminfo:\n"); 382 printf("\tsemmap: %6d\t(# of entries in semaphore map)\n", 383 seminfo.semmap); 384 printf("\tsemmni: %6d\t(# of semaphore identifiers)\n", 385 seminfo.semmni); 386 printf("\tsemmns: %6d\t(# of semaphores in system)\n", 387 seminfo.semmns); 388 printf("\tsemmnu: %6d\t(# of undo structures in system)\n", 389 seminfo.semmnu); 390 printf("\tsemmsl: %6d\t(max # of semaphores per id)\n", 391 seminfo.semmsl); 392 printf("\tsemopm: %6d\t(max # of operations per semop call)\n", 393 seminfo.semopm); 394 printf("\tsemume: %6d\t(max # of undo entries per process)\n", 395 seminfo.semume); 396 printf("\tsemusz: %6d\t(size in bytes of undo structure)\n", 397 seminfo.semusz); 398 printf("\tsemvmx: %6d\t(semaphore maximum value)\n", 399 seminfo.semvmx); 400 printf("\tsemaem: %6d\t(adjust on exit max value)\n\n", 401 seminfo.semaem); 402 } 403 if (display & SEMINFO) { 404 if (semconfig(SEM_CONFIG_FREEZE) != 0) { 405 perror("semconfig"); 406 fprintf(stderr, 407 "Can't lock semaphore facility - winging it...\n"); 408 } 409 kvm_read(kd, symbols[X_SEMA].n_value, &sema, sizeof(sema)); 410 xsema = malloc(sizeof(struct semid_ds) * seminfo.semmni); 411 kvm_read(kd, (u_long) sema, xsema, sizeof(struct semid_ds) * seminfo.semmni); 412 413 printf("Semaphores:\n"); 414 printf("T ID KEY MODE OWNER GROUP"); 415 if (option & CREATOR) 416 printf(" CREATOR CGROUP"); 417 if (option & BIGGEST) 418 printf(" NSEMS"); 419 if (option & TIME) 420 printf(" OTIME CTIME"); 421 printf("\n"); 422 for (i = 0; i < seminfo.semmni; i += 1) { 423 if ((xsema[i].sem_perm.mode & SEM_ALLOC) != 0) { 424 char ctime_buf[100], otime_buf[100]; 425 struct semid_ds *semaptr = &xsema[i]; 426 int j, value; 427 union semun junk; 428 429 cvt_time(semaptr->sem_otime, otime_buf); 430 cvt_time(semaptr->sem_ctime, ctime_buf); 431 432 printf("q %6d %10d %s %8s %8s", 433 IXSEQ_TO_IPCID(i, semaptr->sem_perm), 434 semaptr->sem_perm.key, 435 fmt_perm(semaptr->sem_perm.mode), 436 user_from_uid(semaptr->sem_perm.uid, 0), 437 group_from_gid(semaptr->sem_perm.gid, 0)); 438 439 if (option & CREATOR) 440 printf(" %8s %8s", 441 user_from_uid(semaptr->sem_perm.cuid, 0), 442 group_from_gid(semaptr->sem_perm.cgid, 0)); 443 444 if (option & BIGGEST) 445 printf(" %6d", 446 semaptr->sem_nsems); 447 448 if (option & TIME) 449 printf("%s %s", 450 otime_buf, 451 ctime_buf); 452 453 printf("\n"); 454 } 455 } 456 457 (void) semconfig(SEM_CONFIG_THAW); 458 459 printf("\n"); 460 } 461 } else 462 if (display & (SEMINFO | SEMTOTAL)) { 463 fprintf(stderr, "SVID semaphores facility not configured in the system\n"); 464 } 465 kvm_close(kd); 466 467 exit(0); 468 } 469 470 void 471 usage() 472 { 473 474 fprintf(stderr, 475 "usage: ipcs [-abcmopqst] [-C corefile] [-N namelist]\n"); 476 exit(1); 477 } 478
Indexes created Sat Nov 01 05:10:12 GMT 2025