ipcs.c revision 1.9
1 /* $NetBSD: ipcs.c,v 1.9 1995/03/28 17:24:49 jtc Exp $ */ 2 3 /* 4 * Copyright (c) 1994 SigmaSoft, Th. Lockert <tholo (at) sigmasoft.com> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 19 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 21 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 22 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 23 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 24 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 26 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 27 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include <stdio.h> 31 #include <stdlib.h> 32 #include <string.h> 33 #include <unistd.h> 34 #include <fcntl.h> 35 #include <paths.h> 36 #include <nlist.h> 37 #include <kvm.h> 38 #include <err.h> 39 40 #include <sys/types.h> 41 #include <sys/param.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 int semconfig __P((int,...)); 50 void usage __P((void)); 51 52 static struct nlist symbols[] = { 53 {"_sema"}, 54 #define X_SEMA 0 55 {"_seminfo"}, 56 #define X_SEMINFO 1 57 {"_semu"}, 58 #define X_SEMU 2 59 {"_msginfo"}, 60 #define X_MSGINFO 3 61 {"_msqids"}, 62 #define X_MSQIDS 4 63 {"_shminfo"}, 64 #define X_SHMINFO 5 65 {"_shmsegs"}, 66 #define X_SHMSEGS 6 67 {NULL} 68 }; 69 70 static kvm_t *kd; 71 72 char * 73 fmt_perm(mode) 74 u_short mode; 75 { 76 static char buffer[100]; 77 78 buffer[0] = '-'; 79 buffer[1] = '-'; 80 buffer[2] = ((mode & 0400) ? 'r' : '-'); 81 buffer[3] = ((mode & 0200) ? 'w' : '-'); 82 buffer[4] = ((mode & 0100) ? 'a' : '-'); 83 buffer[5] = ((mode & 0040) ? 'r' : '-'); 84 buffer[6] = ((mode & 0020) ? 'w' : '-'); 85 buffer[7] = ((mode & 0010) ? 'a' : '-'); 86 buffer[8] = ((mode & 0004) ? 'r' : '-'); 87 buffer[9] = ((mode & 0002) ? 'w' : '-'); 88 buffer[10] = ((mode & 0001) ? 'a' : '-'); 89 buffer[11] = '\0'; 90 return (&buffer[0]); 91 } 92 93 void 94 cvt_time(t, buf) 95 time_t t; 96 char *buf; 97 { 98 struct tm *tm; 99 100 if (t == 0) { 101 strcpy(buf, "no-entry"); 102 } else { 103 tm = localtime(&t); 104 sprintf(buf, "%2d:%02d:%02d", 105 tm->tm_hour, tm->tm_min, tm->tm_sec); 106 } 107 } 108 #define SHMINFO 1 109 #define SHMTOTAL 2 110 #define MSGINFO 4 111 #define MSGTOTAL 8 112 #define SEMINFO 16 113 #define SEMTOTAL 32 114 115 #define BIGGEST 1 116 #define CREATOR 2 117 #define OUTSTANDING 4 118 #define PID 8 119 #define TIME 16 120 121 int 122 main(argc, argv) 123 int argc; 124 char *argv[]; 125 { 126 int display = SHMINFO | MSGINFO | SEMINFO; 127 int option = 0; 128 char *core = NULL, *namelist = NULL; 129 int i; 130 131 while ((i = getopt(argc, argv, "MmQqSsabC:cN:optT")) != EOF) 132 switch (i) { 133 case 'M': 134 display = SHMTOTAL; 135 break; 136 case 'm': 137 display = SHMINFO; 138 break; 139 case 'Q': 140 display = MSGTOTAL; 141 break; 142 case 'q': 143 display = MSGINFO; 144 break; 145 case 'S': 146 display = SEMTOTAL; 147 break; 148 case 's': 149 display = SEMINFO; 150 break; 151 case 'T': 152 display = SHMTOTAL | MSGTOTAL | SEMTOTAL; 153 break; 154 case 'a': 155 option |= BIGGEST | CREATOR | OUTSTANDING | PID | TIME; 156 break; 157 case 'b': 158 option |= BIGGEST; 159 break; 160 case 'C': 161 core = optarg; 162 break; 163 case 'c': 164 option |= CREATOR; 165 break; 166 case 'N': 167 namelist = optarg; 168 break; 169 case 'o': 170 option |= OUTSTANDING; 171 break; 172 case 'p': 173 option |= PID; 174 break; 175 case 't': 176 option |= TIME; 177 break; 178 default: 179 usage(); 180 } 181 if ((kd = kvm_open(namelist, core, NULL, O_RDONLY, "ipcs")) == NULL) 182 exit(1); 183 184 switch (kvm_nlist(kd, symbols)) { 185 case 0: 186 break; 187 case -1: 188 errx(1, "unable to read kernel symbol table."); 189 default: 190 #ifdef notdef /* they'll be told more civilly later */ 191 warnx("nlist failed"); 192 for (i = 0; symbols[i].n_name != NULL; i++) 193 if (symbols[i].n_value == 0) 194 warnx("symbol %s not found", 195 symbols[i].n_name); 196 break; 197 #endif 198 } 199 200 if ((display & (MSGINFO | MSGTOTAL)) && 201 kvm_read(kd, symbols[X_MSGINFO].n_value, &msginfo, sizeof(msginfo))) { 202 203 if (display & MSGTOTAL) { 204 printf("msginfo:\n"); 205 printf("\tmsgmax: %6d\t(max characters in a message)\n", 206 msginfo.msgmax); 207 printf("\tmsgmni: %6d\t(# of message queues)\n", 208 msginfo.msgmni); 209 printf("\tmsgmnb: %6d\t(max characters in a message queue)\n", 210 msginfo.msgmnb); 211 printf("\tmsgtql: %6d\t(max # of messages in system)\n", 212 msginfo.msgtql); 213 printf("\tmsgssz: %6d\t(size of a message segment)\n", 214 msginfo.msgssz); 215 printf("\tmsgseg: %6d\t(# of message segments in system)\n\n", 216 msginfo.msgseg); 217 } 218 if (display & MSGINFO) { 219 struct msqid_ds *xmsqids; 220 221 kvm_read(kd, symbols[X_MSQIDS].n_value, &msqids, sizeof(msqids)); 222 xmsqids = malloc(sizeof(struct msqid_ds) * msginfo.msgmni); 223 kvm_read(kd, (u_long) msqids, xmsqids, sizeof(struct msqid_ds) * msginfo.msgmni); 224 225 printf("Message Queues:\n"); 226 printf("T ID KEY MODE OWNER GROUP"); 227 if (option & CREATOR) 228 printf(" CREATOR CGROUP"); 229 if (option & OUTSTANDING) 230 printf(" CBYTES QNUM"); 231 if (option & BIGGEST) 232 printf(" QBYTES"); 233 if (option & PID) 234 printf(" LSPID LRPID"); 235 if (option & TIME) 236 printf(" STIME RTIME CTIME"); 237 printf("\n"); 238 for (i = 0; i < msginfo.msgmni; i += 1) { 239 if (xmsqids[i].msg_qbytes != 0) { 240 char stime_buf[100], rtime_buf[100], 241 ctime_buf[100]; 242 struct msqid_ds *msqptr = &xmsqids[i]; 243 244 cvt_time(msqptr->msg_stime, stime_buf); 245 cvt_time(msqptr->msg_rtime, rtime_buf); 246 cvt_time(msqptr->msg_ctime, ctime_buf); 247 248 printf("q %6d %10d %s %8s %8s", 249 IXSEQ_TO_IPCID(i, msqptr->msg_perm), 250 msqptr->msg_perm.key, 251 fmt_perm(msqptr->msg_perm.mode), 252 user_from_uid(msqptr->msg_perm.uid, 0), 253 group_from_gid(msqptr->msg_perm.gid, 0)); 254 255 if (option & CREATOR) 256 printf(" %8s %8s", 257 user_from_uid(msqptr->msg_perm.cuid, 0), 258 group_from_gid(msqptr->msg_perm.cgid, 0)); 259 260 if (option & OUTSTANDING) 261 printf(" %6d %6d", 262 msqptr->msg_cbytes, 263 msqptr->msg_qnum); 264 265 if (option & BIGGEST) 266 printf(" %6d", 267 msqptr->msg_qbytes); 268 269 if (option & PID) 270 printf(" %6d %6d", 271 msqptr->msg_lspid, 272 msqptr->msg_lrpid); 273 274 if (option & TIME) 275 printf("%s %s %s", 276 stime_buf, 277 rtime_buf, 278 ctime_buf); 279 280 printf("\n"); 281 } 282 } 283 printf("\n"); 284 } 285 } else 286 if (display & (MSGINFO | MSGTOTAL)) { 287 fprintf(stderr, 288 "SVID messages facility not configured in the system\n"); 289 } 290 if ((display & (SHMINFO | SHMTOTAL)) && 291 kvm_read(kd, symbols[X_SHMINFO].n_value, &shminfo, sizeof(shminfo))) { 292 if (display & SHMTOTAL) { 293 printf("shminfo:\n"); 294 printf("\tshmmax: %7d\t(max shared memory segment size)\n", 295 shminfo.shmmax); 296 printf("\tshmmin: %7d\t(min shared memory segment size)\n", 297 shminfo.shmmin); 298 printf("\tshmmni: %7d\t(max number of shared memory identifiers)\n", 299 shminfo.shmmni); 300 printf("\tshmseg: %7d\t(max shared memory segments per process)\n", 301 shminfo.shmseg); 302 printf("\tshmall: %7d\t(max amount of shared memory in pages)\n\n", 303 shminfo.shmall); 304 } 305 if (display & SHMINFO) { 306 struct shmid_ds *xshmids; 307 308 kvm_read(kd, symbols[X_SHMSEGS].n_value, &shmsegs, sizeof(shmsegs)); 309 xshmids = malloc(sizeof(struct shmid_ds) * msginfo.msgmni); 310 kvm_read(kd, (u_long) shmsegs, xshmids, sizeof(struct shmid_ds) * 311 shminfo.shmmni); 312 313 printf("Shared Memory:\n"); 314 printf("T ID KEY MODE OWNER GROUP"); 315 if (option & CREATOR) 316 printf(" CREATOR CGROUP"); 317 if (option & OUTSTANDING) 318 printf(" NATTCH"); 319 if (option & BIGGEST) 320 printf(" SEGSZ"); 321 if (option & PID) 322 printf(" CPID LPID"); 323 if (option & TIME) 324 printf(" ATIME DTIME CTIME"); 325 printf("\n"); 326 for (i = 0; i < shminfo.shmmni; i += 1) { 327 if (xshmids[i].shm_perm.mode & 0x0800) { 328 char atime_buf[100], dtime_buf[100], 329 ctime_buf[100]; 330 struct shmid_ds *shmptr = &xshmids[i]; 331 332 cvt_time(shmptr->shm_atime, atime_buf); 333 cvt_time(shmptr->shm_dtime, dtime_buf); 334 cvt_time(shmptr->shm_ctime, ctime_buf); 335 336 printf("m %6d %10d %s %8s %8s", 337 IXSEQ_TO_IPCID(i, shmptr->shm_perm), 338 shmptr->shm_perm.key, 339 fmt_perm(shmptr->shm_perm.mode), 340 user_from_uid(shmptr->shm_perm.uid, 0), 341 group_from_gid(shmptr->shm_perm.gid, 0)); 342 343 if (option & CREATOR) 344 printf(" %8s %8s", 345 user_from_uid(shmptr->shm_perm.cuid, 0), 346 group_from_gid(shmptr->shm_perm.cgid, 0)); 347 348 if (option & OUTSTANDING) 349 printf(" %6d", 350 shmptr->shm_nattch); 351 352 if (option & BIGGEST) 353 printf(" %6d", 354 shmptr->shm_segsz); 355 356 if (option & PID) 357 printf(" %6d %6d", 358 shmptr->shm_cpid, 359 shmptr->shm_lpid); 360 361 if (option & TIME) 362 printf("%s %s %s", 363 atime_buf, 364 dtime_buf, 365 ctime_buf); 366 367 printf("\n"); 368 } 369 } 370 printf("\n"); 371 } 372 } else 373 if (display & (SHMINFO | SHMTOTAL)) { 374 fprintf(stderr, 375 "SVID shared memory facility not configured in the system\n"); 376 } 377 if ((display & (SEMINFO | SEMTOTAL)) && 378 kvm_read(kd, symbols[X_SEMINFO].n_value, &seminfo, sizeof(seminfo))) { 379 struct semid_ds *xsema; 380 381 if (display & SEMTOTAL) { 382 printf("seminfo:\n"); 383 printf("\tsemmap: %6d\t(# of entries in semaphore map)\n", 384 seminfo.semmap); 385 printf("\tsemmni: %6d\t(# of semaphore identifiers)\n", 386 seminfo.semmni); 387 printf("\tsemmns: %6d\t(# of semaphores in system)\n", 388 seminfo.semmns); 389 printf("\tsemmnu: %6d\t(# of undo structures in system)\n", 390 seminfo.semmnu); 391 printf("\tsemmsl: %6d\t(max # of semaphores per id)\n", 392 seminfo.semmsl); 393 printf("\tsemopm: %6d\t(max # of operations per semop call)\n", 394 seminfo.semopm); 395 printf("\tsemume: %6d\t(max # of undo entries per process)\n", 396 seminfo.semume); 397 printf("\tsemusz: %6d\t(size in bytes of undo structure)\n", 398 seminfo.semusz); 399 printf("\tsemvmx: %6d\t(semaphore maximum value)\n", 400 seminfo.semvmx); 401 printf("\tsemaem: %6d\t(adjust on exit max value)\n\n", 402 seminfo.semaem); 403 } 404 if (display & SEMINFO) { 405 if (semconfig(SEM_CONFIG_FREEZE) != 0) { 406 perror("semconfig"); 407 fprintf(stderr, 408 "Can't lock semaphore facility - winging it...\n"); 409 } 410 kvm_read(kd, symbols[X_SEMA].n_value, &sema, sizeof(sema)); 411 xsema = malloc(sizeof(struct semid_ds) * seminfo.semmni); 412 kvm_read(kd, (u_long) sema, xsema, sizeof(struct semid_ds) * seminfo.semmni); 413 414 printf("Semaphores:\n"); 415 printf("T ID KEY MODE OWNER GROUP"); 416 if (option & CREATOR) 417 printf(" CREATOR CGROUP"); 418 if (option & BIGGEST) 419 printf(" NSEMS"); 420 if (option & TIME) 421 printf(" OTIME CTIME"); 422 printf("\n"); 423 for (i = 0; i < seminfo.semmni; i += 1) { 424 if ((xsema[i].sem_perm.mode & SEM_ALLOC) != 0) { 425 char ctime_buf[100], otime_buf[100]; 426 struct semid_ds *semaptr = &xsema[i]; 427 int j, value; 428 union semun junk; 429 430 cvt_time(semaptr->sem_otime, otime_buf); 431 cvt_time(semaptr->sem_ctime, ctime_buf); 432 433 printf("s %6d %10d %s %8s %8s", 434 IXSEQ_TO_IPCID(i, semaptr->sem_perm), 435 semaptr->sem_perm.key, 436 fmt_perm(semaptr->sem_perm.mode), 437 user_from_uid(semaptr->sem_perm.uid, 0), 438 group_from_gid(semaptr->sem_perm.gid, 0)); 439 440 if (option & CREATOR) 441 printf(" %8s %8s", 442 user_from_uid(semaptr->sem_perm.cuid, 0), 443 group_from_gid(semaptr->sem_perm.cgid, 0)); 444 445 if (option & BIGGEST) 446 printf(" %6d", 447 semaptr->sem_nsems); 448 449 if (option & TIME) 450 printf("%s %s", 451 otime_buf, 452 ctime_buf); 453 454 printf("\n"); 455 } 456 } 457 458 (void) semconfig(SEM_CONFIG_THAW); 459 460 printf("\n"); 461 } 462 } else 463 if (display & (SEMINFO | SEMTOTAL)) { 464 fprintf(stderr, "SVID semaphores facility not configured in the system\n"); 465 } 466 kvm_close(kd); 467 468 exit(0); 469 } 470 471 void 472 usage() 473 { 474 475 fprintf(stderr, 476 "usage: ipcs [-abcmopqst] [-C corefile] [-N namelist]\n"); 477 exit(1); 478 } 479
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