[Ltp-cvs] ltp/testcases/kernel/mem/hugetlb/hugeshmat Makefile,NONE,1.1 hugeshmat01.c,NONE,1.1 hugeshmat02.c,NONE,1.1 hugeshmat03.c,NONE,1.1

[Robert W. <ro...@us...>]

Update of /cvsroot/ltp/ltp/testcases/kernel/mem/hugetlb/hugeshmat
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv16965

Added Files:
	Makefile hugeshmat01.c hugeshmat02.c hugeshmat03.c 
Log Message:
Added tests for shmat() calls using hugetlb.


--- NEW FILE: hugeshmat03.c ---
/*
 *
 *   Copyright (c) International Business Machines  Corp., 2004
 *
 *   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
 *	hugeshmat03.c
 *
 * DESCRIPTION
 *	hugeshmat03 - test for EACCES error
 *
 * ALGORITHM
 *	create a shared memory segment with root only read & write permissions
 *	fork a child process
 *	if child
 *	  set the ID of the child process to that of "nobody"
 *	  loop if that option was specified
 *	    call shmat() using the TEST() macro
 *	    check the errno value
 *	      issue a PASS message if we get EACCES
 *	    otherwise, the tests fails
 *	      issue a FAIL message
 *	  call cleanup
 *	if parent
 *	  wait for child to exit
 *	  remove the shared memory segment
 *
 * USAGE:  <for command-line>
 *  hugeshmat03 [-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
 *	04/2004 - Updated by Robbie Williamson
 *
 * RESTRICTIONS
 *	test must be run at root
 */

#include "ipcshm.h"

char *TCID = "hugeshmat03";
int TST_TOTAL = 1;
extern int Tst_count;

int exp_enos[] = {EACCES, 0};	/* 0 terminated list of expected errnos */

int shm_id_1 = -1;

void	*addr;			/* for result of shmat-call */

uid_t ltp_uid;
char *ltp_user = "nobody";

int main(int ac, char **av)
{
	char *msg;			/* message returned from parse_opts */
	int pid;
	void do_child(void);

	/* 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 */

	if ((pid = fork()) == -1) {
		tst_brkm(TBROK, cleanup, "could not fork");
	}

	if (pid == 0) {		/* child */
		/* set the user ID of the child to the non root user */
		if (setuid(ltp_uid) == -1) {
			tst_resm(TBROK, "setuid() failed");
			exit(1);
		}

		do_child();

	} else {		/* parent */
		/* wait for the child to return */
		if (waitpid(pid, NULL, 0) == -1) {
			tst_brkm(TBROK, cleanup, "waitpid failed");
		}

		/* if it exists, remove the shared memory resource */
		rm_shm(shm_id_1);

		/* Remove the temporary directory */
		tst_rmdir();
	}

	cleanup();
	return(0);
}

/*
 * do_child - make the TEST call as the child process
 */
void
do_child()
{
	int lc;

	/* 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;

		/*
		 * use TEST macro to make the call
		 */
		errno = 0;
		addr = shmat(shm_id_1, (const void *)0, 0);
		TEST_ERRNO = errno;
	
		if (addr != (char *)-1) {
			tst_resm(TFAIL, "call succeeded when error expected");
			continue;
		}
	
		TEST_ERROR_LOG(TEST_ERRNO);

		switch(TEST_ERRNO) {
		case EACCES:
			tst_resm(TPASS, "expected failure - errno = "
				 "%d : %s", TEST_ERRNO,
				 strerror(TEST_ERRNO));
			break;
		default:
			tst_resm(TFAIL, "call failed with an "
				 "unexpected error - %d : %s",
				 TEST_ERRNO, strerror(TEST_ERRNO));
			break;
		}			
	}
}

/*
 * setup() - performs all the ONE TIME setup for this test.
 */
void
setup(void)
{
	/* check for root as process owner */
	check_root();

	/* capture signals */
	tst_sig(FORK, 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();

	/* get an IPC resource key */
	shmkey = getipckey();

	/* create a shared memory segment with read and write permissions */
	if ((shm_id_1 = shmget(shmkey, HUGE_SHM_SIZE, 
			       SHM_HUGETLB | SHM_RW | IPC_CREAT | IPC_EXCL)) == -1) {
		tst_brkm(TBROK, cleanup, "Failed to create shared memory "
			 "segment in setup");
	}

	/* get the userid for a non root user */
	ltp_uid = getuserid(ltp_user);
}

/*
 * cleanup() - performs all the 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.
	 */
	TEST_CLEANUP;

	/* exit with return code appropriate for results */
	tst_exit();
}


--- NEW FILE: Makefile ---
CFLAGS += -I../lib -I../../../../../include -g -Wall
LOADLIBES += -L../../../../../lib -lltp -L../lib -lipc
LDFLAGS := 

SRCS=$(wildcard *.c)
TARGETS=$(patsubst %.c,%,$(SRCS))

all: $(TARGETS)
 
install:
	@set -e; for i in $(TARGETS) ; do ln -f $$i ../../../bin/$$i ; done ;

clean:
	rm -f $(TARGETS)

--- NEW FILE: hugeshmat01.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
 *	hugeshmat01.c
 *
 * DESCRIPTION
 *	hugeshmat01 - test that shmat() works correctly
 *
 * ALGORITHM
 *	create a large shared memory resouce with read/write permissions
 *	loop if that option was specified
 *	call shmat() with the TEST() macro using three valid conditions
 *	check the return code
 *	  if failure, issue a FAIL message.
 *	otherwise,
 *	  if doing functionality testing
 *		check for the correct conditions after the call
 *	  	if correct,
 *			issue a PASS message
 *		otherwise
 *			issue a FAIL message
 *	call cleanup
 *
 * USAGE:  <for command-line>
 *  hugeshmat01 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
 *     where,  -c n : Run n copies concurrently.
 *             -f   : Turn off functionality Testing.
 *	       -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
 *	04/2004 - Updated by Robbie Williamson
 *
 * RESTRICTIONS
 *	none
 */

#include "ipcshm.h"

char *TCID = "hugeshmat01";
int TST_TOTAL = 3;
extern int Tst_count;

#define CASE0		10		/* values to write into the shared */
#define CASE1		20		/* memory location.		   */

#define UNALIGNED      0x90000eee

int shm_id_1 = -1;

void	*addr;				/* for result of shmat-call */

struct test_case_t {
	int *shmid;
	void *addr;
	int flags;
} TC[] = {
	/* a straight forward read/write attach */
	{&shm_id_1, 0, 0},

       /* an attach using non aligned memory */
	{&shm_id_1, (void *)UNALIGNED, SHM_RND},

	/* a read only attach */
	{&shm_id_1, 0, SHM_RDONLY}
};

int main(int ac, char **av)
{
	int lc;				/* loop counter */
	char *msg;			/* message returned from parse_opts */
	int i;
	void check_functionality(int);

	/* 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;

		/* loop through the test cases */
		for (i=0; i<TST_TOTAL; i++) {

			/*
			 * Use TEST macro to make the call
			 */
			errno = 0;
			addr = shmat(*(TC[i].shmid), (void *)(TC[i].addr),
				   TC[i].flags);
			TEST_ERRNO = errno;
	
			if (addr == (void *)-1) {
				tst_brkm(TFAIL, cleanup, "%s call failed - "
					 "errno = %d : %s", TCID, TEST_ERRNO,
					 strerror(TEST_ERRNO));
			} else {
				if (STD_FUNCTIONAL_TEST) {
					check_functionality(i);
				} else {
					tst_resm(TPASS, "call succeeded");
				}
			}

			/*
			 * clean up things in case we are looping - in
			 * this case, detach the shared memory
			 */
			if (shmdt((const void *)addr) == -1) {
				tst_brkm(TBROK, cleanup,
					 "Couldn't detach shared memory");
			}
		}
	}

	cleanup();

	/*NOTREACHED*/
	return(0);
}

/*
 * check_functionality - check various conditions to make sure they 
 *			 are correct.
 */
void
check_functionality(int i)
{
	void *orig_add;
	int *shared;
	int fail = 0;
	struct shmid_ds buf;

	shared = (int *)addr;

	/* stat the shared memory ID */
	if (shmctl(shm_id_1, IPC_STAT, &buf) == -1) {
		tst_brkm(TBROK, cleanup, "couldn't stat shared memory");
	}

	/* check the number of attaches */
	if (buf.shm_nattch != 1) {
		tst_resm(TFAIL, "# of attaches is incorrect");
		return;
	}

	/* check the size of the segment */
	if (buf.shm_segsz != HUGE_SHM_SIZE) {
		tst_resm(TFAIL, "segment size is incorrect");
		return;
	}

	/* check for specific conditions depending on the type of attach */
	switch(i) {
	case 0:
		/*
		 * Check the functionality of the first call by simply
		 * "writing" a value to the shared memory space.
		 * If this fails the program will get a SIGSEGV, dump
		 * core and exit.
		 */

		*shared = CASE0;
		break;
	case 1:
		/*
		 * Check the functionality of the second call by writing
		 * a value to the shared memory space and then checking
		 * that the original address given was rounded down as
		 * specified in the man page.
		 */

		*shared = CASE1;
		orig_add = addr + ((unsigned long)TC[i].addr%SHMLBA);
		if (orig_add != TC[i].addr) {
			tst_resm(TFAIL, "shared memory address is not "
				 "correct");
			fail = 1;
		}
		break;
	case 2:
		/*
		 * This time the shared memory is read only.  Read the value
		 * and check that it is equal to the value set in case #2,
		 * because shared memory is persistent.
		 */

		if (*shared != CASE1) {
			tst_resm(TFAIL, "shared memory value isn't correct");
			fail = 1;
		}
		break;
	}

	if (!fail) {
		tst_resm(TPASS, "conditions and functionality are correct");
	}
}

/*
 * setup() - performs all the ONE TIME setup for this test.
 */
void
setup(void)
{
	/* capture signals */
	tst_sig(NOFORK, DEF_HANDLER, cleanup);

	/* 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();

	/* Get an IPC resouce key */
	shmkey = getipckey();

	/* create a shared memory resource with read and write permissions */
	if ((shm_id_1 = shmget(shmkey++, HUGE_SHM_SIZE, SHM_HUGETLB | SHM_RW | IPC_CREAT |
	     IPC_EXCL)) == -1) {
		tst_brkm(TBROK, cleanup, "Failed to create shared memory "
			 "resource 1 in setup()");
	}
}

/*
 * cleanup() - performs all the ONE TIME cleanup for this test at completion
 * 	       or premature exit.
 */
void
cleanup(void)
{
	/* if it exists, remove the shared memory resource */
	rm_shm(shm_id_1);

	/* Remove the temporary directory */
	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();
}


--- NEW FILE: hugeshmat02.c ---
/*
 *
 *   Copyright (c) International Business Machines  Corp., 2004
 *
 *   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
 *	hugeshmat02.c
 *
 * DESCRIPTION
 *	hugeshmat02 - check for EINVAL and EACCES errors with hugetlb
 *
 * ALGORITHM
 *	loop if that option was specified
 *	  call shmat() using three invalid test cases
 *	  check the errno value
 *	    issue a PASS message if we get EINVAL or EACCES
 *	  otherwise, the tests fails
 *	    issue a FAIL message
 *	call cleanup
 *
 * USAGE:  <for command-line>
 *  hugeshmat02 [-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
 *	04/2004 - Updated By Robbie Williamson
 *
 * RESTRICTIONS
 *	Must be ran as non-root
 */

#include "ipcshm.h"
#include <pwd.h>

char *TCID = "hugeshmat02";
int TST_TOTAL = 3;
extern int Tst_count;
char nobody_uid[] = "nobody";
struct passwd *ltpuser;


int exp_enos[] = {EINVAL, EACCES, 0};	/* 0 terminated list of */
					/* expected errnos      */

int shm_id_1 = -1;
int shm_id_2 = -1;
int shm_id_3 = -1;

void	*addr;				/* for result of shmat-call */

#define NADDR	0x90000eef		/* a non alligned address value */
struct test_case_t {
	int *shmid;
	void *addr;
	int error;
} TC[] = {
	/* EINVAL - the shared memory ID is not valid */
	{&shm_id_1, 0, EINVAL},

	/* EINVAL - the address is not page aligned and SHM_RND is not given */
	{&shm_id_2, (void *)NADDR, EINVAL},

	/* EACCES - the shared memory resource has no read/write permission */
	{&shm_id_3, 0, EACCES}
};

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;

		/* loop through the test cases */
		for (i=0; i<TST_TOTAL; i++) {
			/*
			 * make the call using the TEST() macro - attempt
			 * various invalid shared memory attaches
			 */
 			errno = 0;
                       	addr = shmat(*(TC[i].shmid), (const void *)TC[i].addr, 0);
                       	TEST_ERRNO = errno;

                      	if (addr != (void *)-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, "call failed with an "
					 "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");
        }
         ltpuser = getpwnam(nobody_uid);
         if (setuid(ltpuser->pw_uid) == -1) {
                tst_resm(TINFO, "setuid failed to "
                         "to set the effective uid to %d",
                         ltpuser->pw_uid);
                perror("setuid");
         }


	/* 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();

	/* get an IPC resource key */
	shmkey = getipckey();

	/* create a shared memory resource with read and write permissions */
	/* also post increment the shmkey for the next shmget call */
	if ((shm_id_2 = shmget(shmkey++, HUGE_SHM_SIZE, SHM_HUGETLB | SHM_RW | IPC_CREAT |
	     IPC_EXCL)) == -1) {
		tst_brkm(TBROK, cleanup, "Failed to create shared memory "
			 "resource #1 in setup()");
	}

	/* create a shared memory resource without read and write permissions */
	if ((shm_id_3 = shmget(shmkey, HUGE_SHM_SIZE, SHM_HUGETLB | IPC_CREAT | IPC_EXCL)) == -1) {
		tst_brkm(TBROK, cleanup, "Failed to create shared memory "
			 "resource #2 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 shared memory resources */
	rm_shm(shm_id_2);
	rm_shm(shm_id_3);

	/* Remove the temporary directory */
	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();
}