/*
* Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
/**********************************************************
*
* TEST IDENTIFIER : ioperm02
*
* EXECUTED BY : superuser
*
* TEST TITLE : Tests for error conditions
*
* TEST CASE TOTAL : 2
*
* AUTHOR : Subhab Biwas <subhabrata.biswas@wipro.com>
*
* SIGNALS
* Uses SIGUSR1 to pause before test if option set.
* (See the parse_opts(3) man page).
*
* DESCRIPTION
* Verify that
* 1) ioperm(2) returns -1 and sets errno to EINVAL for I/O port
* address greater than 0x3ff.
* 2) ioperm(2) returns -1 and sets errno to EPERM if the current
* user is not the super-user.
*
* Setup:
* Setup signal handling.
* Set expected errnos for logging
* Pause for SIGUSR1 if option specified.
*
* Test:
* Loop if the proper options are given.
* Execute system call
* Check return code and error number, if matching,
* Issue PASS message
* Otherwise,
* Issue FAIL message
* Perform testcase specific cleanup (if needed)
*
* Cleanup:
* Print errno log and/or timing stats if options given
*
* USAGE: <for command-line>
* ioperm02 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-h] [-f] [-p]
* where, -c n : Run n copies concurrently.
* -e : Turn on errno logging.
* -h : Show help screen
* -f : Turn off functional testing
* -i n : Execute test n times.
* -I x : Execute test for x seconds.
* -p : Pause for SIGUSR1 before starting
* -P x : Pause for x seconds between iterations.
* -t : Turn on syscall timing.
*
****************************************************************/
char *TCID = "ioperm02";
#if defined __i386__ || defined(__x86_64__)
#include <errno.h>
#include <unistd.h>
#include <sys/io.h>
#include <pwd.h>
#include "test.h"
#include "safe_macros.h"
#define NUM_BYTES 3
#define TURN_ON 1
#define TURN_OFF 0
#define EXP_RET_VAL -1
#ifndef IO_BITMAP_BITS
#define IO_BITMAP_BITS 1024 /* set to default value since some H/W may not support 0x10000 even with a 2.6.8 kernel */
#define IO_BITMAP_BITS_16 65536
#endif
static void setup();
static int setup1(void);
static void cleanup1();
static void cleanup();
static char nobody_uid[] = "nobody";
struct passwd *ltpuser;
struct test_cases_t {
long from; /* starting port address */
long num; /* no. of bytes from starting address */
int turn_on;
char *desc; /* test case description */
int exp_errno; /* expected error number */
};
int TST_TOTAL = 2;
struct test_cases_t *test_cases;
int main(int ac, char **av)
{
int lc, i;
tst_parse_opts(ac, av, NULL, NULL);
setup();
for (lc = 0; TEST_LOOPING(lc); lc++) {
tst_count = 0;
for (i = 0; i < TST_TOTAL; ++i) {
if (i == 1) {
/* setup Non super-user for second test */
if (setup1()) {
/* setup1() failed, skip this test */
continue;
}
}
/* Test the system call */
TEST(ioperm(test_cases[i].from,
test_cases[i].num, test_cases[i].turn_on));
if ((TEST_RETURN == EXP_RET_VAL) &&
(TEST_ERRNO == test_cases[i].exp_errno)) {
tst_resm(TPASS, "Expected failure for %s, "
"errno: %d", test_cases[i].desc,
TEST_ERRNO);
} else {
tst_resm(TFAIL, "Unexpected results for %s ; "
"returned %ld (expected %d), errno %d "
"(expected errno %d)",
test_cases[i].desc,
TEST_RETURN, EXP_RET_VAL,
TEST_ERRNO, test_cases[i].exp_errno);
}
if (i == 1) {
/* revert back to super user */
cleanup1();
} else {
}
}
}
/* cleanup and exit */
cleanup();
tst_exit();
}
/* setup1() - set up non-super user for second test case */
int setup1(void)
{
/* switch to "nobody" user */
if (seteuid(ltpuser->pw_uid) == -1) {
tst_resm(TWARN, "Failed to set effective"
"uid to %d", ltpuser->pw_uid);
return 1;
}
return 0;
}
/* cleanup1() - reset to super user for second test case */
void cleanup1(void)
{
/* reset user as root */
SAFE_SETEUID(NULL, 0);
}
/* setup() - performs all ONE TIME setup for this test */
void setup(void)
{
tst_require_root();
tst_sig(NOFORK, DEF_HANDLER, cleanup);
/* Check if "nobody" user id exists */
if ((ltpuser = getpwnam(nobody_uid)) == NULL) {
tst_brkm(TBROK, NULL, "\"nobody\" user id doesn't exist");
}
/*
* The value of IO_BITMAP_BITS (include/asm-i386/processor.h) changed
* from kernel 2.6.8 to permit 16-bits (65536) ioperm
*
* Ricky Ng-Adam, rngadam@yahoo.com
* */
test_cases = malloc(sizeof(struct test_cases_t) * 2);
test_cases[0].num = NUM_BYTES;
test_cases[0].turn_on = TURN_ON;
test_cases[0].desc = "Invalid I/O address";
test_cases[0].exp_errno = EINVAL;
test_cases[1].num = NUM_BYTES;
test_cases[1].turn_on = TURN_ON;
test_cases[1].desc = "Non super-user";
test_cases[1].exp_errno = EPERM;
if ((tst_kvercmp(2, 6, 8) < 0) || (tst_kvercmp(2, 6, 9) == 0)) {
/*try invalid ioperm on 1022, 1023, 1024 */
test_cases[0].from = (IO_BITMAP_BITS - NUM_BYTES) + 1;
/*try get valid ioperm on 1021, 1022, 1023 */
test_cases[1].from = IO_BITMAP_BITS - NUM_BYTES;
} else {
/*try invalid ioperm on 65534, 65535, 65536 */
test_cases[0].from = (IO_BITMAP_BITS_16 - NUM_BYTES) + 1;
/*try valid ioperm on 65533, 65534, 65535 */
test_cases[1].from = IO_BITMAP_BITS_16 - NUM_BYTES;
}
TEST_PAUSE;
}
void cleanup(void)
{
}
#else /* __i386__ */
#include "test.h"
#include "safe_macros.h"
int TST_TOTAL = 0;
int main(void)
{
tst_resm(TPASS,
"LSB v1.3 does not specify ioperm() for this architecture.");
tst_exit();
}
#endif /* __i386__ */