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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  * 	setpgid02.c
     23  *
     24  * DESCRIPTION
     25  *	Testcase to check that setpgid() sets errno correctly.
     26  *
     27  * CALLS
     28  * 	setpgid
     29  *
     30  * ALGORITHM
     31  * 	Checks that setpgid returns the correct errno values in case of
     32  * 	negative testing.
     33  * 	test 1: EINVAL - Pass '-1' as the pgid parameter to setpgid
     34  * 	test 2: ESRCH - Pass '-1' as the pid parameter to setpgid
     35  *	test 3: EPERM - Pass an invalid pgid parameter to setpgid
     36  *
     37  * USAGE:  <for command-line>
     38  *  setpgid02 [-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  *	07/2001 Ported by Wayne Boyer
     48  *
     49  * RESTRICTIONS
     50  * 	None
     51  */
     52 #include <errno.h>
     53 #include <unistd.h>
     54 #include <sys/wait.h>
     55 #include "test.h"
     56 
     57 static void setup(void);
     58 static void cleanup(void);
     59 
     60 char *TCID = "setpgid02";
     61 int TST_TOTAL = 3;
     62 
     63 static pid_t pgid, pid;
     64 static pid_t bad_pid = -1;
     65 static pid_t zero_pid;
     66 static pid_t unused_pid;
     67 static pid_t inval_pid = 99999;
     68 
     69 struct test_case_t {
     70 	pid_t *pid;
     71 	pid_t *pgid;
     72 	int error;
     73 } TC[] = {
     74 	/* pgid is less than zero - EINVAL */
     75 	{
     76 	&pid, &bad_pid, EINVAL},
     77 	    /* pid doesn't match any process - ESRCH */
     78 	{
     79 	&unused_pid, &pgid, ESRCH},
     80 	    /* pgid doesn't exist - EPERM */
     81 	{
     82 	&zero_pid, &inval_pid, EPERM}
     83 };
     84 
     85 int main(int ac, char **av)
     86 {
     87 	int lc;
     88 	int i;
     89 
     90 	tst_parse_opts(ac, av, NULL, NULL);
     91 
     92 	setup();
     93 
     94 	for (lc = 0; TEST_LOOPING(lc); lc++) {
     95 
     96 		/* reset tst_count in case we are looping */
     97 		tst_count = 0;
     98 
     99 		/* loop through the test cases */
    100 		for (i = 0; i < TST_TOTAL; i++) {
    101 
    102 			TEST(setpgid(*TC[i].pid, *TC[i].pgid));
    103 
    104 			if (TEST_RETURN != -1) {
    105 				tst_resm(TFAIL, "call succeeded unexpectedly");
    106 				continue;
    107 			}
    108 
    109 			if (TEST_ERRNO == TC[i].error) {
    110 				tst_resm(TPASS, "expected failure - "
    111 					 "errno = %d : %s", TEST_ERRNO,
    112 					 strerror(TEST_ERRNO));
    113 			} else {
    114 				tst_resm(TFAIL, "unexpected error - %d : %s - "
    115 					 "expected %d", TEST_ERRNO,
    116 					 strerror(TEST_ERRNO), TC[i].error);
    117 			}
    118 		}
    119 	}
    120 	cleanup();
    121 
    122 	tst_exit();
    123 }
    124 
    125 /*
    126  * setup - performs all ONE TIME setup for this test
    127  */
    128 static void setup(void)
    129 {
    130 
    131 	tst_sig(NOFORK, DEF_HANDLER, cleanup);
    132 
    133 	TEST_PAUSE;
    134 
    135 	pgid = getpgrp();
    136 	pid = getpid();
    137 
    138 	unused_pid = tst_get_unused_pid(cleanup);
    139 }
    140 
    141 /*
    142  * cleanup - Performs all ONE TIME cleanup for this test at completion or
    143  * 	     premature exit
    144  */
    145 static void cleanup(void)
    146 {
    147 
    148 }
    149