test/ipc/semop/semop03.c

   1 /*
   2  *
   3  *   Copyright (c) International Business Machines  Corp., 2001
   4  *
   5  *   This program is free software;  you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License as published by
   7  *   the Free Software Foundation; either version 2 of the License, or
   8  *   (at your option) any later version.
   9  *
  10  *   This program is distributed in the hope that it will be useful,
  11  *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  13  *   the GNU General Public License for more details.
  14  *
  15  *   You should have received a copy of the GNU General Public License
  16  *   along with this program;  if not, write to the Free Software
  17  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  18  */
  19
  20 /*
  21  * NAME
  22  *      semop03.c
  23  *
  24  * DESCRIPTION
  25  *      semop03 - test for EFBIG error
  26  *
  27  * ALGORITHM
  28  *      create a semaphore set with read and alter permissions
  29  *      loop if that option was specified
  30  *      call semop() using two different invalid cases
  31  *      check the errno value
  32  *        issue a PASS message if we get EFBIG
  33  *      otherwise, the tests fails
  34  *        issue a FAIL message
  35  *      call cleanup
  36  *
  37  * USAGE:  <for command-line>
  38  *  semop03 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
  39  *     where,  -c n : Run n copies concurrently.
  40  *             -e   : Turn on errno logging.
  41  *             -i n : Execute test n times.
  42  *             -I x : Execute test for x seconds.
  43  *             -P x : Pause for x seconds between iterations.
  44  *             -t   : Turn on syscall timing.
  45  *
  46  * HISTORY
  47  *      03/2001 - Written by Wayne Boyer
  48  *
  49  * RESTRICTIONS
  50  *      none
  51  */
  52
  53 #include "ipcsem.h"
  54
  55 char *TCID = "semop03";
  56 int TST_TOTAL = 2;
  57 extern int Tst_count;
  58
  59 int exp_enos[] = {EFBIG, 0};    /* 0 terminated list of expected errnos */
  60
  61 int sem_id_1 = -1;
  62
  63 struct sembuf s_buf;
  64
  65 int TC[] = {-1, PSEMS + 1};     /* negative and too many "primitive" semas */
  66
  67 int main(int ac, char **av)
  68 {
  69         int lc;                         /* loop counter */
  70         char *msg;                      /* message returned from parse_opts */
  71         int i;
  72
  73         /* parse standard options */
  74         if ((msg = parse_opts(ac, av, (option_t *)NULL, NULL)) !=(char *)NULL){
  75                 tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg);
  76         }
  77
  78         setup();                        /* global setup */
  79
  80         /* initialize two fields in the sembuf structure here */
  81         s_buf.sem_op = 1;       /* add this value to struct sem.semval */
  82         s_buf.sem_flg = SEM_UNDO;       /* undo when process exits */
  83
  84         /* The following loop checks looping state if -i option given */
  85
  86         for (lc = 0; TEST_LOOPING(lc); lc++) {
  87                 /* reset Tst_count in case we are looping */
  88                 Tst_count = 0;
  89
  90                 for (i=0; i<TST_TOTAL; i++) {
  91
  92                         /* initialize the last field in the sembuf */
  93                         /* structure to the test dependent value   */
  94                         s_buf.sem_num = TC[i];
  95
  96                         /*
  97                          * use the TEST macro to make the call
  98                          */
  99
 100                         TEST(semop(sem_id_1, &s_buf, 1));
 101
 102                         if (TEST_RETURN != -1) {
 103                                 tst_resm(TFAIL, "call succeeded unexpectedly");
 104                                 continue;
 105                         }
 106
 107                         TEST_ERROR_LOG(TEST_ERRNO);
 108
 109                         switch(TEST_ERRNO) {
 110                         case EFBIG:
 111                                 tst_resm(TPASS, "expected failure - errno = "
 112                                          "%d : %s", TEST_ERRNO,
 113                                          strerror(TEST_ERRNO));
 114                                 break;
 115                         default:
 116                                 tst_resm(TFAIL, "unexpected error - "
 117                                          "%d : %s", TEST_ERRNO,
 118                                          strerror(TEST_ERRNO));
 119                                 break;
 120                         }
 121                 }
 122         }
 123
 124         cleanup();
 125
 126         /*NOTREACHED*/
 127         return(0);
 128 }
 129
 130 /*
 131  * setup() - performs all the ONE TIME setup for this test.
 132  */
 133 void
 134 setup(void)
 135 {
 136         /* capture signals */
 137         tst_sig(NOFORK, DEF_HANDLER, cleanup);
 138
 139         /* Set up the expected error numbers for -e option */
 140         TEST_EXP_ENOS(exp_enos);
 141
 142         /* Pause if that option was specified */
 143         TEST_PAUSE;
 144
 145         /*
 146          * Create a temporary directory and cd into it.
 147          * This helps to ensure that a unique msgkey is created.
 148          * See ../lib/libipc.c for more information.
 149          */
 150         tst_tmpdir();
 151
 152         /* get an IPC resource key */
 153         semkey = getipckey();
 154
 155         /* create a semaphore with read and alter permissions */
 156         if ((sem_id_1 =
 157              semget(semkey, PSEMS, IPC_CREAT | IPC_EXCL | SEM_RA)) == -1) {
 158                 tst_brkm(TBROK, cleanup, "couldn't create semaphore in setup");
 159         }
 160 }
 161
 162 /*
 163  * cleanup() - performs all the ONE TIME cleanup for this test at completion
 164  *             or premature exit.
 165  */
 166 void
 167 cleanup(void)
 168 {
 169         /* if it exists, remove the semaphore resource */
 170         rm_sema(sem_id_1);
 171
 172         /* Remove the temporary directory */
 173         tst_rmdir();
 174
 175         /*
 176          * print timing stats if that option was specified.
 177          * print errno log if that option was specified.
 178          */
 179         TEST_CLEANUP;
 180
 181         /* exit with return code appropriate for results */
 182         tst_exit();
 183 }
 184