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      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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
     18  */
     19 
     20 /*
     21  * NAME
     22  *	shmctl04.c
     23  *
     24  * DESCRIPTION
     25  *	shmctl04 - test the SHM_INFO command
     26  *		   they are used with shmctl() in ipcs
     27  *
     28  * USAGE:  <for command-line>
     29  *  shmctl04 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
     30  *     where,  -c n : Run n copies concurrently.
     31  *             -f   : Turn off functionality Testing.
     32  *	       -i n : Execute test n times.
     33  *	       -I x : Execute test for x seconds.
     34  *	       -P x : Pause for x seconds between iterations.
     35  *	       -t   : Turn on syscall timing.
     36  *
     37  * HISTORY
     38  *	09/2002 - Written by Mingming Cao
     39  *
     40  * RESTRICTIONS
     41  *	none
     42  */
     43 
     44 #include "ipcshm.h"
     45 
     46 char *TCID = "shmctl04";
     47 int TST_TOTAL = 1;
     48 
     49 struct shm_info shm_info;
     50 int max_ids;
     51 
     52 /*
     53  * These are the various setup and check functions for the commands
     54  * that we are checking.
     55  */
     56 
     57 int main(int ac, char **av)
     58 {
     59 	int lc;
     60 
     61 	tst_parse_opts(ac, av, NULL, NULL);
     62 
     63 	setup();
     64 
     65 	/* The following loop checks looping state if -i option given */
     66 
     67 	for (lc = 0; TEST_LOOPING(lc); lc++) {
     68 		/* reset tst_count in case we are looping */
     69 		tst_count = 0;
     70 		TEST(shmctl(0, SHM_INFO, (struct shmid_ds *)&shm_info));
     71 
     72 		if (TEST_RETURN != -1) {
     73 			tst_resm(TPASS, "SHM_INFO call succeeded");
     74 			continue;
     75 		}
     76 
     77 		tst_resm(TFAIL, "SHM_INFO call failed with an unexpected error"
     78 			 " - %d : %s", TEST_ERRNO, strerror(TEST_ERRNO));
     79 
     80 	}
     81 
     82 	cleanup();
     83 
     84 	tst_exit();
     85 }
     86 
     87 /*
     88  * setup() - performs all the ONE TIME setup for this test.
     89  */
     90 void setup(void)
     91 {
     92 
     93 	tst_sig(NOFORK, DEF_HANDLER, cleanup);
     94 
     95 	TEST_PAUSE;
     96 
     97 	/*
     98 	 * Create a temporary directory and cd into it.
     99 	 * This helps to ensure that a unique msgkey is created.
    100 	 * See ../lib/libipc.c for more information.
    101 	 */
    102 	tst_tmpdir();
    103 
    104 }
    105 
    106 /*
    107  * cleanup() - performs all the ONE TIME cleanup for this test at completion
    108  * 	       or premature exit.
    109  */
    110 void cleanup(void)
    111 {
    112 
    113 	tst_rmdir();
    114 
    115 }
    116