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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  * 	getppid02.c
     23  *
     24  * DESCRIPTION
     25  * 	Testcase to check the basic functionality of the getppid() syscall.
     26  *
     27  * USAGE:  <for command-line>
     28  *  getppid02 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
     29  *     where,  -c n : Run n copies concurrently.
     30  *             -f   : Turn off functionality Testing.
     31  *             -i n : Execute test n times.
     32  *             -I x : Execute test for x seconds.
     33  *             -P x : Pause for x seconds between iterations.
     34  *             -t   : Turn on syscall timing.
     35  *
     36  * HISTORY
     37  *	07/2001 Ported by Wayne Boyer
     38  *
     39  * RESTRICTIONS
     40  * 	None
     41  */
     42 #include <sys/types.h>
     43 #include <sys/wait.h>
     44 #include <err.h>
     45 #include <errno.h>
     46 #include "test.h"
     47 #include "safe_macros.h"
     48 
     49 char *TCID = "getppid02";
     50 int TST_TOTAL = 1;
     51 
     52 void setup(void);
     53 void cleanup(void);
     54 
     55 int main(int ac, char **av)
     56 {
     57 
     58 	int lc;
     59 	int status;
     60 	pid_t pid, ppid;
     61 
     62 	tst_parse_opts(ac, av, NULL, NULL);
     63 
     64 	setup();
     65 
     66 	for (lc = 0; TEST_LOOPING(lc); lc++) {
     67 		tst_count = 0;
     68 
     69 		ppid = getpid();
     70 		pid = FORK_OR_VFORK();
     71 		if (pid == -1)
     72 			tst_brkm(TBROK, cleanup, "fork failed");
     73 
     74 		if (pid == 0) {
     75 			TEST(getppid());
     76 
     77 			if (TEST_RETURN != ppid)
     78 				errx(1, "getppid failed (%ld != %d)",
     79 				     TEST_RETURN, ppid);
     80 			else
     81 				printf("return value and parent's pid "
     82 				       "value match\n");
     83 			exit(0);
     84 		} else {
     85 			SAFE_WAIT(cleanup, &status);
     86 			if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
     87 				tst_resm(TFAIL,
     88 					 "getppid functionality incorrect");
     89 		}
     90 	}
     91 	cleanup();
     92 
     93 	tst_exit();
     94 }
     95 
     96 void setup(void)
     97 {
     98 
     99 	tst_sig(FORK, DEF_HANDLER, cleanup);
    100 
    101 	TEST_PAUSE;
    102 }
    103 
    104 void cleanup(void)
    105 {
    106 }
    107