ipcs/ipcs.c

   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
  28 #include <sys/cdefs.h>
  29
  30 #include <assert.h>
  31 #include <err.h>
  32 #include <fcntl.h>
  33 #include <grp.h>
  34 #include <nlist.h>
  35 #include <limits.h>
  36 #include <paths.h>
  37 #include <pwd.h>
  38 #include <stddef.h>
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <string.h>
  42 #include <unistd.h>
  43 #include <sysexits.h>
  44
  45 #include "sys/types.h"
  46 #include <sys/ucred.h>
  47 #include <sys/time.h>
  48 #include <sys/proc.h>
  49 #include <sys/param.h>
  50 #include <sys/sysctl.h>
  51 #include <errno.h>
  52 #include "sys/ipcs.h"
  53 #define KERNEL 1                /* To get new ipc_perm and __(sem|shm|msg)ds_new */
  54 #include "sys/ipc.h"
  55 #include "sys/sem_internal.h"
  56 #include "sys/shm_internal.h"
  57 #include "sys/msg.h"
  58
  59
  60 /* The following is a kludge, until the problem of multiple inclusions
  61    of ipc.h is taken care of. */
  62 #ifndef IXSEQ_TO_IPCID
  63 #define IXSEQ_TO_IPCID(ix,perm) (((perm._seq) << 16L) | (ix & 0xffff))
  64 #endif
  65
  66 static char   *
  67 fmt_perm(u_short mode, char write_char)
  68 {
  69         static char buffer[100];
  70
  71         buffer[0] = '-';
  72         buffer[1] = '-';
  73         buffer[2] = ((mode & 0400) ? 'r' : '-');
  74         buffer[3] = ((mode & 0200) ? write_char : '-');
  75         buffer[4] = '-';
  76         buffer[5] = ((mode & 0040) ? 'r' : '-');
  77         buffer[6] = ((mode & 0020) ? write_char : '-');
  78         buffer[7] = '-';
  79         buffer[8] = ((mode & 0004) ? 'r' : '-');
  80         buffer[9] = ((mode & 0002) ? write_char : '-');
  81         buffer[10] = '-';
  82         buffer[11] = '\0';
  83         return (&buffer[0]);
  84 }
  85
  86 static void
  87 cvt_time(time_t t, char *buf)
  88 {
  89         struct tm *tm;
  90
  91         if (t == 0) {
  92                 strcpy(buf, "no-entry");
  93         } else {
  94                 tm = localtime(&t);
  95                 if (tm != NULL) {
  96                         sprintf(buf, "%2d:%02d:%02d",
  97                                 tm->tm_hour, tm->tm_min, tm->tm_sec);
  98                 }
  99         }
 100 }
 101 #define SHMINFO         1
 102 #define SHMTOTAL        2
 103 #define MSGINFO         4
 104 #define MSGTOTAL        8
 105 #define SEMINFO         16
 106 #define SEMTOTAL        32
 107
 108 #define BIGGEST         1
 109 #define CREATOR         2
 110 #define OUTSTANDING     4
 111 #define PID             8
 112 #define TIME            16
 113
 114 static void
 115 usage(void)
 116 {
 117         errx(EX_USAGE, "%s","usage: ipcs [-abcmopqstMQST]\n");
 118 }
 119
 120 int
 121 main(argc, argv)
 122         int     argc;
 123         char   *argv[];
 124 {
 125         int     display = 0;
 126         int     option = 0;
 127         int     exit_val = 0;
 128         time_t  now;
 129         char    datestring[100];
 130         int     i;
 131
 132         while ((i = getopt(argc, argv, "MmQqSsabcoptT")) != -1)
 133                 switch (i) {
 134                 case 'M':
 135                         display = SHMTOTAL;
 136                         break;
 137                 case 'm':
 138                         display |= SHMINFO;
 139                         break;
 140                 case 'Q':
 141                         display = MSGTOTAL;
 142                         break;
 143                 case 'q':
 144                         display |= MSGINFO;
 145                         break;
 146                 case 'S':
 147                         display = SEMTOTAL;
 148                         break;
 149                 case 's':
 150                         display |= SEMINFO;
 151                         break;
 152                 case 'T':
 153                         display = SHMTOTAL | MSGTOTAL | SEMTOTAL;
 154                         break;
 155                 case 'a':
 156                         option |= BIGGEST | CREATOR | OUTSTANDING | PID | TIME;
 157                         break;
 158                 case 'b':
 159                         option |= BIGGEST;
 160                         break;
 161                 case 'c':
 162                         option |= CREATOR;
 163                         break;
 164                 case 'o':
 165                         option |= OUTSTANDING;
 166                         break;
 167                 case 'p':
 168                         option |= PID;
 169                         break;
 170                 case 't':
 171                         option |= TIME;
 172                         break;
 173                 default:
 174                         usage();
 175                 }
 176         if (display == 0)
 177                 display = SHMINFO | MSGINFO | SEMINFO;
 178         now = time(0);
 179         struct tm* tm = localtime(&now);
 180         if (tm == NULL) {
 181                 now = 0;
 182                 tm = localtime(&now);
 183         }
 184         if (0 == strftime(datestring, sizeof(datestring), "%a %b %e %H:%M:%S %Z %Y", tm))
 185             errx(1, "strftime failed\n");
 186         printf("IPC status from <running system> as of %s\n", datestring);
 187         if ((display & (MSGINFO | MSGTOTAL))) {
 188                 if (display & MSGTOTAL) {
 189                         struct IPCS_command ic;
 190                         struct msginfo msginfo;
 191                         size_t ic_size = sizeof(ic);
 192
 193                         ic.ipcs_magic = IPCS_MAGIC;
 194                         ic.ipcs_op = IPCS_MSG_CONF;
 195                         ic.ipcs_cursor = 0;     /* 0 for fw. compat. */
 196                         ic.ipcs_data = &msginfo;
 197                         ic.ipcs_datalen = sizeof(msginfo);
 198
 199                         if (sysctlbyname(IPCS_MSG_SYSCTL, &ic, &ic_size, &ic, ic_size)) {
 200                                 if (errno != EPERM) {
 201                                         char buffer[1024];
 202                                         snprintf(buffer, 1024, "sysctlbyname(IPCS_MSG_SYSCTL, op=CONF, &ic, &%ld) datalen=%d",
 203                                                  sizeof(ic), ic.ipcs_datalen);
 204                                         perror(buffer);
 205                                 } else
 206                                         perror("sysctlbyname IPCS_MSG_SYSCTL");
 207                         }
 208
 209                         printf("msginfo:\n");
 210                         printf("\tmsgmax: %6d\t(max characters in a message)\n",
 211                             msginfo.msgmax);
 212                         printf("\tmsgmni: %6d\t(# of message queues)\n",
 213                             msginfo.msgmni);
 214                         printf("\tmsgmnb: %6d\t(max characters in a message queue)\n",
 215                             msginfo.msgmnb);
 216                         printf("\tmsgtql: %6d\t(max # of messages in system)\n",
 217                             msginfo.msgtql);
 218                         printf("\tmsgssz: %6d\t(size of a message segment)\n",
 219                             msginfo.msgssz);
 220                         printf("\tmsgseg: %6d\t(# of message segments in system)\n\n",
 221                             msginfo.msgseg);
 222                 }
 223                 if (display & MSGINFO) {
 224                         struct IPCS_command ic;
 225                         struct __msqid_ds_new ds;
 226                         struct __msqid_ds_new *msqptr = &ds;
 227                         size_t ic_size = sizeof(ic);
 228
 229                         printf("T     ID     KEY        MODE       OWNER    GROUP");
 230                         if (option & CREATOR)
 231                                 printf("  CREATOR   CGROUP");
 232                         if (option & OUTSTANDING)
 233                                 printf(" CBYTES  QNUM");
 234                         if (option & BIGGEST)
 235                                 printf(" QBYTES");
 236                         if (option & PID)
 237                                 printf(" LSPID LRPID");
 238                         if (option & TIME)
 239                                 printf("   STIME    RTIME    CTIME");
 240                         printf("\nMessage Queues:\n");
 241
 242                         ic.ipcs_magic = IPCS_MAGIC;
 243                         ic.ipcs_op = IPCS_MSG_ITER;
 244                         ic.ipcs_cursor = 0;     /* start */
 245                         ic.ipcs_datalen = sizeof(*msqptr);
 246                         ic.ipcs_data = msqptr;
 247
 248                         memset(msqptr, 0, sizeof(*msqptr));
 249
 250                         while(!(sysctlbyname(IPCS_MSG_SYSCTL, &ic, &ic_size, &ic, ic_size))) {
 251                                 ic.ipcs_data = msqptr;
 252
 253                                 if (msqptr->msg_qbytes != 0) {
 254                                         char    stime_buf[100], rtime_buf[100],
 255                                                 ctime_buf[100];
 256
 257                                         cvt_time(msqptr->msg_stime, stime_buf);
 258                                         cvt_time(msqptr->msg_rtime, rtime_buf);
 259                                         cvt_time(msqptr->msg_ctime, ctime_buf);
 260
 261                                         printf("q %6d 0x%08x %s %8s %8s",
 262                                                IXSEQ_TO_IPCID((ic.ipcs_cursor-1), msqptr->msg_perm),
 263                                             (int)msqptr->msg_perm._key,
 264                                             fmt_perm(msqptr->msg_perm.mode, 'w'),
 265                                             user_from_uid(msqptr->msg_perm.uid, 0),
 266                                             group_from_gid(msqptr->msg_perm.gid, 0));
 267
 268                                         if (option & CREATOR)
 269                                                 printf(" %8s %8s",
 270                                                     user_from_uid(msqptr->msg_perm.cuid, 0),
 271                                                     group_from_gid(msqptr->msg_perm.cgid, 0));
 272
 273                                         if (option & OUTSTANDING)
 274                                                 printf(" %6lu %6lu",
 275                                                     msqptr->msg_cbytes,
 276                                                     msqptr->msg_qnum);
 277
 278                                         if (option & BIGGEST)
 279                                                 printf(" %6lu",
 280                                                     msqptr->msg_qbytes);
 281
 282                                         if (option & PID)
 283                                                 printf(" %6d %6d",
 284                                                     msqptr->msg_lspid,
 285                                                     msqptr->msg_lrpid);
 286
 287                                         if (option & TIME)
 288                                                 printf(" %s %s %s",
 289                                                     stime_buf,
 290                                                     rtime_buf,
 291                                                     ctime_buf);
 292
 293                                         printf("\n");
 294                                 }
 295                                 memset(msqptr, 0, sizeof(*msqptr));
 296                                 errno = 0;
 297                         }
 298
 299                         if (errno != ENOENT && errno != ERANGE) {
 300                                 if (errno != EPERM) {
 301                                         errx(1, "sysctlbyname(IPCS_MSG_SYSCTL, op=ITER, &ic, &%ld) datalen=%d failed:%s\n",
 302                                                  sizeof(ic), ic.ipcs_datalen, strerror(errno));
 303                                 } else
 304                                         errx(1, "sysctlbyname IPCS_MSG_SYSCTL: %s", strerror(errno));
 305                         }
 306                         printf("\n");
 307                 }
 308         } else
 309                 if (display & (MSGINFO | MSGTOTAL)) {
 310                         errx(1, "%s", "SVID messages facility not configured in the system\n");
 311                 }
 312
 313         if ((display & (SHMINFO | SHMTOTAL))) {
 314                 if (display & SHMTOTAL) {
 315                         struct IPCS_command ic;
 316                         struct shminfo shminfo;
 317                         size_t ic_size = sizeof(ic);
 318
 319                         ic.ipcs_magic = IPCS_MAGIC;
 320                         ic.ipcs_op = IPCS_SHM_CONF;
 321                         ic.ipcs_cursor = 0;     /* 0 for fw. compat. */
 322                         ic.ipcs_data = &shminfo;
 323                         ic.ipcs_datalen = sizeof(shminfo);
 324
 325                         if (sysctlbyname(IPCS_SHM_SYSCTL, &ic, &ic_size, &ic, ic_size)) {
 326                                 if (errno != EPERM) {
 327                                         errx(1, "sysctlbyname(IPCS_SHM_SYSCTL, op=CONF, &ic, &%ld) datalen=%d failed: %s\n",
 328                                              sizeof(ic), ic.ipcs_datalen, strerror(errno));
 329                                 } else
 330                                         errx(1, "sysctlbyname: %s", strerror(errno));
 331                         }
 332                         printf("shminfo:\n");
 333                         printf("\tshmmax: %7lld\t(max shared memory segment size)\n",
 334                             shminfo.shmmax);
 335                         printf("\tshmmin: %7lld\t(min shared memory segment size)\n",
 336                             shminfo.shmmin);
 337                         printf("\tshmmni: %7lld\t(max number of shared memory identifiers)\n",
 338                             shminfo.shmmni);
 339                         printf("\tshmseg: %7lld\t(max shared memory segments per process)\n",
 340                             shminfo.shmseg);
 341                         printf("\tshmall: %7lld\t(max amount of shared memory in pages)\n\n",
 342                             shminfo.shmall);
 343                 }
 344                 if (display & SHMINFO) {
 345                         struct IPCS_command ic;
 346                         struct __shmid_ds_new ds;
 347                         struct __shmid_ds_new *shmptr = &ds;
 348                         size_t ic_size = sizeof(ic);
 349
 350                         printf("T     ID     KEY        MODE       OWNER    GROUP");
 351                         if (option & CREATOR)
 352                                 printf("  CREATOR   CGROUP");
 353                         if (option & OUTSTANDING)
 354                                 printf(" NATTCH");
 355                         if (option & BIGGEST)
 356                                 printf("  SEGSZ");
 357                         if (option & PID)
 358                                 printf("  CPID  LPID");
 359                         if (option & TIME)
 360                                 printf("   ATIME    DTIME    CTIME");
 361                         printf("\nShared Memory:\n");
 362                 {       /* XXX */
 363
 364                         ic.ipcs_magic = IPCS_MAGIC;
 365                         ic.ipcs_op = IPCS_SHM_ITER;
 366                         ic.ipcs_cursor = 0;     /* start */
 367                         ic.ipcs_datalen = sizeof(*shmptr);
 368                         ic.ipcs_data = shmptr;
 369                         memset(shmptr, 0, sizeof(*shmptr));
 370
 371                         while(!(sysctlbyname(IPCS_SHM_SYSCTL, &ic, &ic_size, &ic, ic_size))) {
 372                                 ic.ipcs_data = shmptr; /* xnu workaround */
 373
 374                                 if (shmptr->shm_perm.mode & 0x0800) {
 375                                         char    atime_buf[100], dtime_buf[100],
 376                                                 ctime_buf[100];
 377
 378                                         cvt_time(shmptr->shm_atime, atime_buf);
 379                                         cvt_time(shmptr->shm_dtime, dtime_buf);
 380                                         cvt_time(shmptr->shm_ctime, ctime_buf);
 381
 382                                         printf("m %6d 0x%08x %s %8s %8s",
 383                                                IXSEQ_TO_IPCID((ic.ipcs_cursor-1), shmptr->shm_perm),
 384                                             (int)shmptr->shm_perm._key,
 385                                             fmt_perm(shmptr->shm_perm.mode, 'w'),
 386                                             user_from_uid(shmptr->shm_perm.uid, 0),
 387                                             group_from_gid(shmptr->shm_perm.gid, 0));
 388
 389                                         if (option & CREATOR)
 390                                                 printf(" %8s %8s",
 391                                                     user_from_uid(shmptr->shm_perm.cuid, 0),
 392                                                     group_from_gid(shmptr->shm_perm.cgid, 0));
 393
 394                                         if (option & OUTSTANDING)
 395                                                 printf(" %6d",
 396                                                     shmptr->shm_nattch);
 397
 398                                         if (option & BIGGEST)
 399                                                 printf(" %6ld",
 400                                                     shmptr->shm_segsz);
 401
 402                                         if (option & PID)
 403                                                 printf(" %6d %6d",
 404                                                     shmptr->shm_cpid,
 405                                                     shmptr->shm_lpid);
 406
 407                                         if (option & TIME)
 408                                                 printf(" %s %s %s",
 409                                                     atime_buf,
 410                                                     dtime_buf,
 411                                                     ctime_buf);
 412
 413                                         printf("\n");
 414                                 }
 415                                 memset(shmptr, 0, sizeof(*shmptr));
 416                                 errno = 0;
 417                         }
 418
 419                         if (errno != ENOENT && errno != ERANGE) {
 420                                 if (errno != EPERM) {
 421                                         errx(1, "sysctlbyname(IPCS_SHM_SYSCTL, op=ITER, &ic, &%ld) datalen=%d failed:%s\n",
 422                                                  sizeof(ic), ic.ipcs_datalen, strerror(errno));
 423                                 } else
 424                                         errx(1, "sysctlbyname: %s", strerror(errno));
 425                         }
 426                 }       /* XXX */
 427                         printf("\n");
 428                 }
 429         }
 430 else
 431                 if (display & (SHMINFO | SHMTOTAL)) {
 432                         errx(1, "%s", "SVID shared memory facility not configured in the system\n");
 433                 }
 434
 435         if ((display & (SEMINFO | SEMTOTAL))) {
 436                 if (display & SEMTOTAL) {
 437                         struct IPCS_command ic;
 438                         struct seminfo seminfo;
 439                         size_t ic_size = sizeof(ic);
 440
 441                         ic.ipcs_magic = IPCS_MAGIC;
 442                         ic.ipcs_op = IPCS_SEM_CONF;
 443                         ic.ipcs_cursor = 0;     /* 0 for fw. compat. */
 444                         ic.ipcs_data = &seminfo;
 445                         ic.ipcs_datalen = sizeof(seminfo);
 446
 447                         if (sysctlbyname(IPCS_SEM_SYSCTL, &ic, &ic_size, &ic, ic_size)) {
 448                                 if (errno != EPERM) {
 449                                         char buffer[1024];
 450                                         snprintf(buffer, 1024, "sysctlbyname(IPCS_SEM_SYSCTL, op=CONF, &ic, &%ld) datalen=%d",
 451                                                  sizeof(ic), ic.ipcs_datalen);
 452                                         perror(buffer);
 453                                 } else
 454                                         perror("sysctlbyname IPCS_SEM_SYSCTL/SEM_CONF");
 455                         }
 456
 457                         printf("seminfo:\n");
 458                         printf("\tsemmap: %6d\t(# of entries in semaphore map)\n",
 459                             seminfo.semmap);
 460                         printf("\tsemmni: %6d\t(# of semaphore identifiers)\n",
 461                             seminfo.semmni);
 462                         printf("\tsemmns: %6d\t(# of semaphores in system)\n",
 463                             seminfo.semmns);
 464                         printf("\tsemmnu: %6d\t(# of undo structures in system)\n",
 465                             seminfo.semmnu);
 466                         printf("\tsemmsl: %6d\t(max # of semaphores per id)\n",
 467                             seminfo.semmsl);
 468                         printf("\tsemopm: %6d\t(max # of operations per semop call)\n",
 469                             seminfo.semopm);
 470                         printf("\tsemume: %6d\t(max # of undo entries per process)\n",
 471                             seminfo.semume);
 472                         printf("\tsemusz: %6d\t(size in bytes of undo structure)\n",
 473                             seminfo.semusz);
 474                         printf("\tsemvmx: %6d\t(semaphore maximum value)\n",
 475                             seminfo.semvmx);
 476                         printf("\tsemaem: %6d\t(adjust on exit max value)\n\n",
 477                             seminfo.semaem);
 478                 }
 479                 if (display & SEMINFO) {
 480                         struct IPCS_command ic;
 481                         struct __semid_ds_new ds;
 482                         struct __semid_ds_new *semaptr = &ds;
 483                         size_t ic_size = sizeof(ic);
 484
 485                         printf("T     ID     KEY        MODE       OWNER    GROUP");
 486                         if (option & CREATOR)
 487                                 printf("  CREATOR   CGROUP");
 488                         if (option & BIGGEST)
 489                                 printf(" NSEMS");
 490                         if (option & TIME)
 491                                 printf("   OTIME    CTIME");
 492                         printf("\nSemaphores:\n");
 493
 494                         ic.ipcs_magic = IPCS_MAGIC;
 495                         ic.ipcs_op = IPCS_SEM_ITER;
 496                         ic.ipcs_cursor = 0;     /* start */
 497                         ic.ipcs_datalen = sizeof(*semaptr);
 498                         ic.ipcs_data = semaptr;
 499
 500                         memset(semaptr, 0, sizeof(*semaptr));
 501
 502                         while(!(sysctlbyname(IPCS_SEM_SYSCTL, &ic, &ic_size, &ic, ic_size))) {
 503                                 ic.ipcs_data = semaptr; /* xnu workaround */
 504
 505                                 if ((semaptr->sem_perm.mode & SEM_ALLOC) != 0) {
 506                                         char    ctime_buf[100], otime_buf[100];
 507
 508                                         cvt_time(semaptr->sem_otime, otime_buf);
 509                                         cvt_time(semaptr->sem_ctime, ctime_buf);
 510
 511                                         printf("s %6d 0x%08x %s %8s %8s",
 512                                                IXSEQ_TO_IPCID((ic.ipcs_cursor-1), semaptr->sem_perm),
 513                                             (int)semaptr->sem_perm._key,
 514                                             fmt_perm(semaptr->sem_perm.mode, 'a'),
 515                                             user_from_uid(semaptr->sem_perm.uid, 0),
 516                                             group_from_gid(semaptr->sem_perm.gid, 0));
 517
 518                                         if (option & CREATOR)
 519                                                 printf(" %8s %8s",
 520                                                     user_from_uid(semaptr->sem_perm.cuid, 0),
 521                                                     group_from_gid(semaptr->sem_perm.cgid, 0));
 522
 523                                         if (option & BIGGEST)
 524                                                 printf(" %6d",
 525                                                     semaptr->sem_nsems);
 526
 527                                         if (option & TIME)
 528                                                 printf(" %s %s",
 529                                                     otime_buf,
 530                                                     ctime_buf);
 531
 532                                         printf("\n");
 533                                 }
 534                                 memset(semaptr, 0, sizeof(*semaptr));
 535                                 errno = 0;
 536                         }
 537
 538                         if (errno != ENOENT && errno != ERANGE) {
 539                                 if (errno != EPERM) {
 540                                         errx(1, "sysctlbyname(IPCS_SEM_SYSCTL/ITER, op=ITER, &ic, &%ld) datalen=%d failed: %s\n",
 541                                                  sizeof(ic), ic.ipcs_datalen, strerror(errno));
 542                                 } else
 543                                         errx(1, "sysctlbyname: IPCS_SEM_SYSCTL %s", strerror(errno));
 544                         }
 545                         printf("\n");
 546                 }
 547         } else
 548                 if (display & (SEMINFO | SEMTOTAL)) {
 549                         errx(1, "%s", "SVID semaphores facility not configured in the system\n");
 550                 }
 551
 552         exit(exit_val);
 553 }