149 lines
3.2 KiB
C
149 lines
3.2 KiB
C
/*
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*
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* Copyright (c) International Business Machines Corp., 2001
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* NAME
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* sched_setscheduler01.c
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*
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* DESCRIPTION
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* Testcase to test whether sched_setscheduler(2) sets the errnos
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* correctly.
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*
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* ALGORITHM
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* 1. Call sched_setscheduler as a non-root uid, and expect EPERM
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* to be returned.
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*
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* USAGE: <for command-line>
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* sched_setscheduler02 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
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* where, -c n : Run n copies concurrently.
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* -e : Turn on errno logging.
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* -i n : Execute test n times.
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* -I x : Execute test for x seconds.
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* -P x : Pause for x seconds between iterations.
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* -t : Turn on syscall timing.
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*
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* HISTORY
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* 07/2001 Ported by Wayne Boyer
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*
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* RESTRICTIONS
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* Must run test as root.
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*/
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#include <stdio.h>
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#include <errno.h>
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#include <sched.h>
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#include <pwd.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include "test.h"
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#include "safe_macros.h"
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#define SCHED_INVALID 99
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#define INVALID_PID 999999
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char *TCID = "sched_setscheduler02";
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int TST_TOTAL = 1;
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void setup(void);
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void cleanup(void);
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static uid_t nobody_uid;
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int main(int ac, char **av)
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{
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int lc;
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pid_t pid;
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struct sched_param param;
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int status;
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tst_parse_opts(ac, av, NULL, NULL);
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setup();
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for (lc = 0; TEST_LOOPING(lc); lc++) {
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/* reset tst_count in case we are looping */
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tst_count = 0;
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if ((pid = FORK_OR_VFORK()) == -1) {
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tst_brkm(TBROK, cleanup, "fork failed");
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}
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if (pid == 0) { /* child */
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param.sched_priority = 1;
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SAFE_SETEUID(cleanup, nobody_uid);
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TEST(sched_setscheduler(pid, SCHED_FIFO, ¶m));
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if (TEST_ERRNO) {
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}
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if (TEST_RETURN != -1) {
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tst_resm(TFAIL, "sched_setscheduler(2) passed "
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"with non root priveledges");
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} else if (TEST_ERRNO != EPERM) {
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tst_resm(TFAIL, "Expected EPERM, got %d",
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TEST_ERRNO);
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} else {
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tst_resm(TPASS, "got EPERM");
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}
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} else { /* parent */
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/* let the child carry on */
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wait(&status);
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if (WIFEXITED(status) != 0) { /* Exit with errors */
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exit(WEXITSTATUS(status));
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} else {
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exit(0);
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}
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}
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SAFE_SETEUID(cleanup, 0);
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}
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cleanup();
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tst_exit();
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}
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/*
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* setup() - performs all ONE TIME setup for this test.
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*/
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void setup(void)
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{
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struct passwd *pw;
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tst_require_root();
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pw = SAFE_GETPWNAM(NULL, "nobody");
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nobody_uid = pw->pw_uid;
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tst_sig(FORK, DEF_HANDLER, cleanup);
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TEST_PAUSE;
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}
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/*
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* cleanup() - performs all ONE TIME cleanup for this test at
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* completion or premature exit.
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*/
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void cleanup(void)
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{
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}
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