Home | History | Annotate | Download | only in sched_setscheduler 
      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  *	sched_setscheduler01.c
     23  *
     24  * DESCRIPTION
     25  *	Testcase to test whether sched_setscheduler(2) sets the errnos
     26  *	correctly.
     27  *
     28  * ALGORITHM
     29  *	1.	Call sched_setscheduler with an invalid pid, and expect
     30  *	ESRCH to be returned.
     31  *	2.	Call sched_setscheduler with an invalid scheduling policy,
     32  *	and expect EINVAL to be returned.
     33  *	3.	Call sched_setscheduler with an invalid "param" address,
     34  *	which lies outside the address space of the process, and expect
     35  *	EFAULT to be returned.
     36  *	4.	Call sched_setscheduler with an invalid priority value
     37  *	in "param" and expect EINVAL to be returned
     38  *
     39  * USAGE:  <for command-line>
     40  *  sched_setscheduler01 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
     41  *     where,  -c n : Run n copies concurrently.
     42  *             -e   : Turn on errno logging.
     43  *             -i n : Execute test n times.
     44  *             -I x : Execute test for x seconds.
     45  *             -P x : Pause for x seconds between iterations.
     46  *             -t   : Turn on syscall timing.
     47  *
     48  * HISTORY
     49  *	07/2001 Ported by Wayne Boyer
     50  *
     51  * RESTRICTIONS
     52  *	None
     53  */
     54 #include <stdio.h>
     55 #include <errno.h>
     56 #include <sched.h>
     57 #include <pwd.h>
     58 #include "test.h"
     59 
     60 #define SCHED_INVALID	99
     61 
     62 char *TCID = "sched_setscheduler01";
     63 
     64 struct sched_param param;
     65 struct sched_param param1 = { 1 };
     66 
     67 void setup(void);
     68 void cleanup(void);
     69 
     70 static pid_t unused_pid;
     71 static pid_t init_pid = 1;
     72 static pid_t zero_pid;
     73 
     74 struct test_case_t {
     75 	pid_t *pid;
     76 	int policy;
     77 	struct sched_param *p;
     78 	int error;
     79 } TC[] = {
     80 	/* The pid is invalid - ESRCH */
     81 	{
     82 	&unused_pid, SCHED_OTHER, &param, ESRCH},
     83 	    /* The policy is invalid - EINVAL */
     84 	{
     85 	&init_pid, SCHED_INVALID, &param, EINVAL},
     86 #ifndef UCLINUX
     87 	    /* Skip since uClinux does not implement memory protection */
     88 	    /* The param address is invalid - EFAULT */
     89 	{
     90 	&init_pid, SCHED_OTHER, (struct sched_param *)-1, EFAULT},
     91 #endif
     92 	    /* The priority value in param invalid - EINVAL */
     93 	{
     94 	&zero_pid, SCHED_OTHER, &param1, EINVAL}
     95 };
     96 
     97 int TST_TOTAL = ARRAY_SIZE(TC);
     98 
     99 int main(int ac, char **av)
    100 {
    101 	int lc;
    102 
    103 	int i;
    104 
    105 	tst_parse_opts(ac, av, NULL, NULL);
    106 
    107 	for (lc = 0; TEST_LOOPING(lc); lc++) {
    108 		/* reset tst_count in case we are looping */
    109 		tst_count = 0;
    110 
    111 		setup();
    112 
    113 		/* loop through the test cases */
    114 		for (i = 0; i < TST_TOTAL; i++) {
    115 
    116 			TEST(sched_setscheduler(*(TC[i].pid), TC[i].policy,
    117 						TC[i].p));
    118 
    119 			if (TEST_RETURN != -1) {
    120 				tst_resm(TFAIL, "call succeeded unexpectedly");
    121 				continue;
    122 			}
    123 
    124 			if (TEST_ERRNO == TC[i].error) {
    125 				tst_resm(TPASS, "expected failure - "
    126 					 "errno = %d : %s", TEST_ERRNO,
    127 					 strerror(TEST_ERRNO));
    128 			} else {
    129 				tst_resm(TFAIL, "unexpected error - %d : %s - "
    130 					 "expected %d", TEST_ERRNO,
    131 					 strerror(TEST_ERRNO), TC[i].error);
    132 			}
    133 		}
    134 	}
    135 	cleanup();
    136 
    137 	tst_exit();
    138 
    139 }
    140 
    141 /*
    142  * setup() - performs all ONE TIME setup for this test.
    143  */
    144 void setup(void)
    145 {
    146 	unused_pid = tst_get_unused_pid(cleanup);
    147 
    148 	tst_sig(NOFORK, DEF_HANDLER, cleanup);
    149 
    150 	TEST_PAUSE;
    151 }
    152 
    153 /*
    154  * cleanup() - performs all ONE TIME cleanup for this test at
    155  *	       completion or premature exit.
    156  */
    157 void cleanup(void)
    158 {
    159 
    160 }
    161