- restore original UID before deleting test directory - do not assume that SIGUSR1 signal is set to default action
224 lines
5.8 KiB
C
224 lines
5.8 KiB
C
/*
|
|
*
|
|
* Copyright (c) International Business Machines Corp., 2001
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
|
|
* the GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
/*
|
|
* NAME
|
|
* semop02.c
|
|
*
|
|
* DESCRIPTION
|
|
* semop02 - test for E2BIG, EACCES, EFAULT and EINVAL errors
|
|
*
|
|
* ALGORITHM
|
|
* create a semaphore set with read and alter permissions
|
|
* create a semaphore set without read and alter permissions
|
|
* loop if that option was specified
|
|
* call semop with five different invalid cases
|
|
* check the errno value
|
|
* issue a PASS message if we get E2BIG, EACCES, EFAULT or EINVAL
|
|
* otherwise, the tests fails
|
|
* issue a FAIL message
|
|
* call cleanup
|
|
*
|
|
* USAGE: <for command-line>
|
|
* semop02 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
|
|
* where, -c n : Run n copies concurrently.
|
|
* -e : Turn on errno logging.
|
|
* -i n : Execute test n times.
|
|
* -I x : Execute test for x seconds.
|
|
* -P x : Pause for x seconds between iterations.
|
|
* -t : Turn on syscall timing.
|
|
*
|
|
* HISTORY
|
|
* 03/2001 - Written by Wayne Boyer
|
|
*
|
|
* RESTRICTIONS
|
|
* none
|
|
*/
|
|
#include <pwd.h>
|
|
|
|
#include "ipcsem.h"
|
|
|
|
char *TCID = "semop02";
|
|
int TST_TOTAL = 4;
|
|
extern int Tst_count;
|
|
|
|
int exp_enos[] = {E2BIG, EACCES, EFAULT, EINVAL, 0};
|
|
|
|
int sem_id_1 = -1; /* a semaphore set with read & alter permissions */
|
|
int sem_id_2 = -1; /* a semaphore set without read & alter permissions */
|
|
int bad_id = -1;
|
|
char nobody_uid[] = "nobody";
|
|
struct passwd *ltpuser;
|
|
|
|
struct sembuf s_buf[PSEMS];
|
|
|
|
int badbuf = -1;
|
|
|
|
#define NSOPS 5 /* a resonable number of operations */
|
|
#define BIGOPS 1024 /* a value that is too large for the number */
|
|
/* of semop operations that are permitted */
|
|
|
|
struct test_case_t {
|
|
int *semid; /* the semaphore id */
|
|
struct sembuf *t_sbuf; /* the first in an array of sembuf structures */
|
|
unsigned t_ops; /* the number of elements in the above array */
|
|
int error; /* the expected error number */
|
|
} TC[] = {
|
|
/* E2BIG - the number of operations is too big */
|
|
{&sem_id_1, (struct sembuf *)&s_buf, BIGOPS, E2BIG},
|
|
|
|
/* EACCES - the semaphore set has no access permission */
|
|
{&sem_id_2, (struct sembuf *)&s_buf, NSOPS, EACCES},
|
|
|
|
/* EINVAL - the number of elments (t_ops) is 0 */
|
|
{&sem_id_1, (struct sembuf *)&s_buf, 0, EINVAL},
|
|
|
|
/* EINVAL - the semaphore set doesn't exist */
|
|
{&bad_id, (struct sembuf *)&s_buf, NSOPS, EINVAL}
|
|
};
|
|
|
|
int main(int ac, char **av)
|
|
{
|
|
int lc; /* loop counter */
|
|
char *msg; /* message returned from parse_opts */
|
|
int i;
|
|
|
|
/* parse standard options */
|
|
if ((msg = parse_opts(ac, av, (option_t *)NULL, NULL)) != (char *)NULL){
|
|
tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg);
|
|
}
|
|
|
|
setup(); /* global setup */
|
|
|
|
/* The following loop checks looping state if -i option given */
|
|
|
|
for (lc = 0; TEST_LOOPING(lc); lc++) {
|
|
/* reset Tst_count in case we are looping */
|
|
Tst_count = 0;
|
|
|
|
for (i=0; i<TST_TOTAL; i++) {
|
|
/*
|
|
* use the TEST macro to make the call
|
|
*/
|
|
|
|
TEST(semop(*(TC[i].semid), TC[i].t_sbuf, TC[i].t_ops));
|
|
|
|
if (TEST_RETURN != -1) {
|
|
tst_resm(TFAIL, "call succeeded unexpectedly");
|
|
continue;
|
|
}
|
|
|
|
TEST_ERROR_LOG(TEST_ERRNO);
|
|
|
|
if (TEST_ERRNO == TC[i].error) {
|
|
tst_resm(TPASS, "expected failure - errno = "
|
|
"%d : %s", TEST_ERRNO,
|
|
strerror(TEST_ERRNO));
|
|
} else {
|
|
tst_resm(TFAIL, "unexpected error - "
|
|
"%d : %s", TEST_ERRNO,
|
|
strerror(TEST_ERRNO));
|
|
}
|
|
}
|
|
}
|
|
|
|
cleanup();
|
|
|
|
/*NOTREACHED*/
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* setup() - performs all the ONE TIME setup for this test.
|
|
*/
|
|
void
|
|
setup(void)
|
|
{
|
|
/* Switch to nobody user for correct error code collection */
|
|
if (geteuid() != 0) {
|
|
tst_brkm(TBROK, tst_exit, "Test must be run as root");
|
|
}
|
|
|
|
/* capture signals */
|
|
tst_sig(NOFORK, DEF_HANDLER, cleanup);
|
|
|
|
/* Set up the expected error numbers for -e option */
|
|
TEST_EXP_ENOS(exp_enos);
|
|
|
|
/* Pause if that option was specified */
|
|
TEST_PAUSE;
|
|
|
|
/*
|
|
* Create a temporary directory and cd into it.
|
|
* This helps to ensure that a unique msgkey is created.
|
|
* See ../lib/libipc.c for more information.
|
|
*/
|
|
tst_tmpdir();
|
|
|
|
ltpuser = getpwnam(nobody_uid);
|
|
if (seteuid(ltpuser->pw_uid) == -1) {
|
|
tst_resm(TINFO, "setreuid failed to "
|
|
"to set the effective uid to %d",
|
|
ltpuser->pw_uid);
|
|
perror("setreuid");
|
|
}
|
|
|
|
/* get an IPC resource key */
|
|
semkey = getipckey();
|
|
|
|
/* create a semaphore set with read and alter permissions */
|
|
if ((sem_id_1 =
|
|
semget(semkey, PSEMS, IPC_CREAT | IPC_EXCL | SEM_RA)) == -1) {
|
|
tst_brkm(TBROK, cleanup, "couldn't create semaphore in setup");
|
|
}
|
|
|
|
/* increment the semkey */
|
|
semkey += 1;
|
|
|
|
/* create a semaphore set without read and alter permissions */
|
|
if ((sem_id_2 = semget(semkey, PSEMS, IPC_CREAT | IPC_EXCL)) == -1) {
|
|
tst_brkm(TBROK, cleanup, "couldn't create semaphore in setup");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* cleanup() - performs all the ONE TIME cleanup for this test at completion
|
|
* or premature exit.
|
|
*/
|
|
void
|
|
cleanup(void)
|
|
{
|
|
/* if they exist, remove the semaphore resources */
|
|
rm_sema(sem_id_1);
|
|
rm_sema(sem_id_2);
|
|
|
|
/* Remove the temporary directory */
|
|
seteuid(getuid());
|
|
tst_rmdir();
|
|
|
|
/*
|
|
* print timing stats if that option was specified.
|
|
* print errno log if that option was specified.
|
|
*/
|
|
TEST_CLEANUP;
|
|
|
|
/* exit with return code appropriate for results */
|
|
tst_exit();
|
|
}
|
|
|