test/ipc/semctl/semctl05.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  *      semctl05.c
  23  *
  24  * DESCRIPTION
  25  *      semctl05 - test for ERANGE error
  26  *
  27  * ALGORITHM
  28  *      create a semaphore set with read and alter permissions
  29  *      loop if that option was specified
  30  *      call semctl() with three different invalid cases
  31  *      check the errno value
  32  *        issue a PASS message if we get ERANGE
  33  *      otherwise, the tests fails
  34  *        issue a FAIL message
  35  *      call cleanup
  36  *
  37  * USAGE:  <for command-line>
  38  *  semctl05 [-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 = "semctl05";
  56 int TST_TOTAL = 3;
  57 extern int Tst_count;
  58
  59 #ifdef _XLC_COMPILER
  60 #define SEMUN_CAST
  61 #else
  62 #define SEMUN_CAST (union semun)
  63 #endif
  64
  65 int exp_enos[] = {ERANGE, 0};   /* 0 terminated list of expected errnos */
  66
  67 int sem_id_1 = -1;
  68
  69 #define BIGV    65535           /* a number ((2^16)-1) that should be larger */
  70                                 /* than the maximum for a semaphore value    */
  71
  72 #ifdef _XLC_COMPILER
  73 #define SEMUN_CAST
  74 #else
  75 #define SEMUN_CAST (union semun)
  76 #endif
  77
  78
  79 unsigned short big_arr[] = {BIGV, BIGV, BIGV, BIGV, BIGV, BIGV, BIGV, BIGV,
  80                             BIGV, BIGV};
  81
  82 struct test_case_t {
  83         int count;
  84         int cmd;
  85         union semun t_arg;
  86 } TC[3];
  87
  88 void setup_test_case(void)
  89 {
  90         /* ERANGE - the value to set is less than zero - SETVAL */
  91         /* {5, SETVAL, SEMUN_CAST -1}, */
  92     TC[0].count = 5;
  93     TC[0].cmd = SETVAL;
  94     TC[0].t_arg.val = -1;
  95
  96         /* ERANGE - the values to set are too large, > semaphore max value */
  97         /* {0, SETALL, SEMUN_CAST big_arr}, */
  98     TC[1].count = 0;
  99     TC[1].cmd = SETALL;
 100     TC[1].t_arg.array = big_arr;
 101
 102         /* ERANGE - the value to set is too large, > semaphore max value */
 103         /* {5, SETVAL, SEMUN_CAST BIGV} */
 104     TC[2].count = 5;
 105     TC[2].cmd = SETVAL;
 106     TC[2].t_arg.val = BIGV;
 107 }
 108
 109 int main(int ac, char **av)
 110 {
 111         int lc;                         /* loop counter */
 112         char *msg;                      /* message returned from parse_opts */
 113         int i;
 114
 115         /* parse standard options */
 116         if ((msg = parse_opts(ac, av, (option_t *)NULL, NULL)) != (char *)NULL){
 117                 tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg);
 118         }
 119
 120         setup();                        /* global setup */
 121
 122         /* The following loop checks looping state if -i option given */
 123
 124         for (lc = 0; TEST_LOOPING(lc); lc++) {
 125                 /* reset Tst_count in case we are looping */
 126                 Tst_count = 0;
 127
 128                 for (i=0; i<TST_TOTAL; i++) {
 129
 130                         TEST(semctl(sem_id_1, TC[i].count,
 131                                     TC[i].cmd, TC[i].t_arg));
 132
 133                         if (TEST_RETURN != -1) {
 134                                 tst_resm(TFAIL, "call succeeded unexpectedly");
 135                                 continue;
 136                         }
 137
 138                         TEST_ERROR_LOG(TEST_ERRNO);
 139
 140                         switch(TEST_ERRNO) {
 141                         case ERANGE:
 142                                 tst_resm(TPASS, "expected failure - errno = "
 143                                          "%d : %s", TEST_ERRNO,
 144                                          strerror(TEST_ERRNO));
 145                                 break;
 146                         default:
 147                                 tst_resm(TFAIL, "unexpected error "
 148                                          "- %d : %s", TEST_ERRNO,
 149                                          strerror(TEST_ERRNO));
 150                                 break;
 151                         }
 152                 }
 153         }
 154
 155         cleanup();
 156
 157         /*NOTREACHED*/
 158         return(0);
 159 }
 160
 161 /*
 162  * setup() - performs all the ONE TIME setup for this test.
 163  */
 164 void
 165 setup(void)
 166 {
 167     setup_test_case();
 168
 169         /* capture signals */
 170         tst_sig(NOFORK, DEF_HANDLER, cleanup);
 171
 172         /* Set up the expected error numbers for -e option */
 173         TEST_EXP_ENOS(exp_enos);
 174
 175         /* Pause if that option was specified */
 176         TEST_PAUSE;
 177
 178         /*
 179          * Create a temporary directory and cd into it.
 180          * This helps to ensure that a unique msgkey is created.
 181          * See ../lib/libipc.c for more information.
 182          */
 183         tst_tmpdir();
 184
 185         /* get an IPC resource key */
 186         semkey = getipckey();
 187
 188         /* create a semaphore set with read and alter permissions */
 189         if ((sem_id_1 =
 190              semget(semkey, PSEMS, IPC_CREAT | IPC_EXCL | SEM_RA)) == -1) {
 191                 tst_brkm(TBROK, cleanup, "couldn't create semaphore in setup");
 192         }
 193 }
 194
 195 /*
 196  * cleanup() - performs all the ONE TIME cleanup for this test at completion
 197  *             or premature exit.
 198  */
 199 void
 200 cleanup(void)
 201 {
 202         /* if it exists, remove the semaphore resouce */
 203         rm_sema(sem_id_1);
 204
 205         /* Remove the temporary directory */
 206         tst_rmdir();
 207
 208         /*
 209          * print timing stats if that option was specified.
 210          * print errno log if that option was specified.
 211          */
 212         TEST_CLEANUP;
 213
 214         /* exit with return code appropriate for results */
 215         tst_exit();
 216 }
 217