/*
* 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 : query_module03
*
* EXECUTED BY : root / superuser
*
* TEST TITLE : Checking error conditions for query_module(2)
*
* TEST CASE TOTAL : 4
*
* AUTHOR : Madhu T L <madhu.tarikere@wipro.com>
*
* SIGNALS
* Uses SIGUSR1 to pause before test if option set.
* (See the parse_opts(3) man page).
*
* DESCRIPTION
* Verify that,
* 1. query_module(2) returns -1 and sets errno to EFAULT for module name
* argument outside program's accessible address space.
* 2. query_module(2) returns -1 and sets errno to EFAULT for return size
* argument outside program's accessible address space.
* 3. query_module(2) returns -1 and sets errno to EFAULT for output buffer
* argument outside program's accessible address space.
* 4. query_module(2) returns -1 and sets errno to ENOSPC for too small
* buffer size.
*
* Setup:
* Setup signal handling.
* Test caller is superuser
* 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
*
* Cleanup:
* Print errno log and/or timing stats if options given
*
* USAGE: <for command-line>
* query_module03 [-c n] [-e] [-f] [-h] [-i n] [-I x] [-p] [-P x] [-t]
* where, -c n : Run n copies concurrently.
* -e : Turn on errno logging.
* -f : Turn off functional testing
* -h : Show help screen
* -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.
*
* RESTRICTIONS
* -c option has no effect for this testcase, even if used allows only
* one instance to run at a time.
*
* CHANGES
*
* 12/03/02 Added "force" to insmod to ignore kernel version.
* -Robbie Williamson <robbiew@us.ibm.com>
*
****************************************************************/
#include <unistd.h>
#include <errno.h>
#include <pwd.h>
#include <sys/types.h>
#include <unistd.h>
#include <limits.h>
#include <asm/atomic.h>
#include <linux/module.h>
#include <sys/mman.h>
#include "test.h"
#ifndef PAGE_SIZE
#define PAGE_SIZE sysconf(_SC_PAGE_SIZE)
#endif
#define EXP_RET_VAL -1
#define DUMMY_MOD "dummy_query_mod"
#define SMALLBUFSIZE 1
struct test_case_t { /* test case structure */
char *modname;
int which;
void *buf;
size_t bufsize;
size_t *ret_size;
int experrno; /* expected errno */
char *desc;
int (*setup) (void);
void (*cleanup) (void);
};
char *TCID = "query_module03";
static int testno;
static char out_buf[PAGE_SIZE];
static size_t ret_size;
char *bad_addr = 0;
static void setup(void);
static void cleanup(void);
static int setup1(void);
static void cleanup1(void);
static struct test_case_t tdat[] = {
{(char *)-1, QM_MODULES, (void *)out_buf, sizeof(out_buf), &ret_size,
EFAULT, "results for module name argument outside program's "
"accessible address space", NULL, NULL}
,
{NULL, QM_MODULES, (void *)out_buf, sizeof(out_buf), (size_t *) - 1,
EFAULT, "results for return size argument outside program's "
"accessible address space", NULL, NULL}
,
{NULL, QM_MODULES, (void *)-1, sizeof(out_buf), &ret_size, EFAULT,
"results for output buffer argument outside program's "
"accessible address space", setup1, cleanup1}
,
{NULL, QM_MODULES, (void *)out_buf, SMALLBUFSIZE, &ret_size, ENOSPC,
"results for too small buffer size", setup1, cleanup1},
};
int TST_TOTAL = sizeof(tdat) / sizeof(tdat[0]);
int main(int argc, char **argv)
{
int lc;
tst_parse_opts(argc, argv, NULL, NULL);
tst_tmpdir();
setup();
for (lc = 0; TEST_LOOPING(lc); lc++) {
/* reset tst_count in case we are looping */
tst_count = 0;
for (testno = 0; testno < TST_TOTAL; ++testno) {
if ((tdat[testno].setup) && (tdat[testno].setup())) {
/* setup() failed, skip this test */
continue;
}
TEST(query_module(tdat[testno].modname,
tdat[testno].which, tdat[testno].buf,
tdat[testno].bufsize,
tdat[testno].ret_size));
if ((TEST_RETURN == EXP_RET_VAL) &&
(TEST_ERRNO == tdat[testno].experrno)) {
tst_resm(TPASS, "Expected %s, errno: %d",
tdat[testno].desc, TEST_ERRNO);
} else {
tst_resm(TFAIL, "Unexpected %s ; returned"
" %d (expected %d), errno %d (expected"
" %d)", tdat[testno].desc,
TEST_RETURN, EXP_RET_VAL,
TEST_ERRNO, tdat[testno].experrno);
}
if (tdat[testno].cleanup) {
tdat[testno].cleanup();
}
}
}
cleanup();
tst_exit();
}
int setup1(void)
{
char cmd[80];
if (sprintf(cmd, "cp `which %s.o` ./", DUMMY_MOD) == -1) {
tst_resm(TBROK, "sprintf failed");
return 1;
}
if (system(cmd) != 0) {
tst_resm(TBROK, "Failed to copy %s module", DUMMY_MOD);
return 1;
}
/* Should use force to ignore kernel version & insure loading */
/* -RW */
/* if (sprintf(cmd, "insmod %s.o", DUMMY_MOD) == -1) { */
if (sprintf(cmd, "insmod --force -q %s.o >/dev/null 2>&1", DUMMY_MOD) ==
-1) {
tst_resm(TBROK, "sprintf failed");
return 1;
}
if (system(cmd) != 0) {
tst_resm(TBROK, "Failed to load %s module", DUMMY_MOD);
return 1;
}
return 0;
}
void cleanup1(void)
{
/* Remove the loadable module - DUMMY_MOD */
if (system("rmmod " DUMMY_MOD) != 0) {
tst_brkm(TBROK, cleanup, "Failed to unload module %s",
DUMMY_MOD);
}
}
/*
* setup()
* performs all ONE TIME setup for this test
*/
void setup(void)
{
tst_sig(FORK, DEF_HANDLER, cleanup);
tst_require_root();
if (tst_kvercmp(2, 5, 48) >= 0)
tst_brkm(TCONF, NULL, "This test will not work on "
"kernels after 2.5.48");
/* Pause if that option was specified
* TEST_PAUSE contains the code to fork the test with the -c option.
*/
TEST_PAUSE;
bad_addr = mmap(0, 1, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
if (bad_addr == MAP_FAILED) {
tst_brkm(TBROK, cleanup, "mmap failed");
}
tdat[0].modname = bad_addr;
tdat[2].buf = (void *)bad_addr;
}
/*
* cleanup()
* performs all ONE TIME cleanup for this test at
* completion or premature exit
*/
void cleanup(void)
{
/*
* print timing stats if that option was specified.
* print errno log if that option was specified.
*/
tst_rmdir();
}