testcases/kernel/syscalls/truncate/truncate03.c - platform/external/ltp - Gitiles

 /*
  *
  *   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
  */

 /*
  * Test Name: truncate03
  *
  * Test Description:
  *  Verify that,
  *  1) truncate(2) returns -1 and sets errno to EACCES if search/write
  *     permission denied for the process on the component of the path prefix
  *     or named file.
  *  2) truncate(2) returns -1 and sets errno to ENOTDIR if the component of
  *     the path prefix is not a directory.
  *  3) truncate(2) returns -1 and sets errno to EFAULT if pathname points
  *     outside user's accessible address space.
  *  4) truncate(2) returns -1 and sets errno to ENAMETOOLONG if the component
  *     of a pathname exceeded 255 characters or entire pathname exceeds 1023
  *     characters.
  *  5) truncate(2) returns -1 and sets errno to ENOENT if the named file
  *     does not exist.
  *
  * Expected Result:
  *  truncate() should fail with return value -1 and set expected errno.
  *
  * Algorithm:
  *  Setup:
  *   Setup signal handling.
  *   Create temporary directory.
  *   Pause for SIGUSR1 if option specified.
  *
  *  Test:
  *   Loop if the proper options are given.
  *   Execute system call
  *   Check return code, if system call failed (return=-1)
  *   	if errno set == expected errno
  *   		Issue sys call fails with expected return value and errno.
  *   	Otherwise,
  *		Issue sys call fails with unexpected errno.
  *   Otherwise,
  *	Issue sys call returns unexpected value.
  *
  *  Cleanup:
  *   Print errno log and/or timing stats if options given
  *   Delete the temporary directory(s)/file(s) created.
  *
  * Usage:  <for command-line>
  *   truncate03 [-c n] [-e] [-f] [-i n] [-I x] [-p x] [-t]
  *	where,  -c n : Run n copies concurrently.
  *		-e   : Turn on errno logging.
  *		-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
  *	07/2001 John George
  *		-Ported
  *
  * Restrictions:
  *  This test should be executed by 'non-super-user' only.
  *
  */

 #include <stdio.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/fcntl.h>
 #include <sys/mman.h>
 #include <errno.h>
 #include <string.h>
 #include <signal.h>
 #include <pwd.h>

 #include "test.h"
 #include "usctest.h"

 #define TEST_FILE1	"testfile"		/* file under test */
 #define TEST_FILE2	"t_file/testfile"	/* file under test */
 #define FILE_MODE	S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH
 #define NEW_MODE	S_IRUSR | S_IRGRP | S_IROTH
 #define BUF_SIZE	256			/* buffer size */
 #define FILE_SIZE	1024			/* test file size */
 #define TRUNC_LEN	256			/* truncation length */
 char nobody_uid[] = "nobody";
 struct passwd *ltpuser;

 int no_setup();
 int setup1();			/* setup function to test chmod for EACCES */
 int setup2();			/* setup function to test chmod for ENOTDIR */
 int longpath_setup();   /* setup function to test chmod for ENAMETOOLONG */

 TCID_DEFINE(truncate03);	/* Test program identifier.    */
 extern int Tst_count;		/* Test Case counter for tst_* routines */
 int exp_enos[]={EACCES, ENOTDIR, EFAULT, ENAMETOOLONG, ENOENT, 0};

 char * bad_addr = 0;

 char Longpathname[PATH_MAX+2];
 char High_address_node[64];

 struct test_case_t {		/* test case struct. to hold ref. test cond's*/
 	char *pathname;
 	char *desc;
 	int exp_errno;
 	int (*setupfunc)();
 } Test_cases[] = {
 	{ TEST_FILE1, "No Search permissions to process", EACCES, setup1 },
 	{ TEST_FILE2, "Path contains regular file", ENOTDIR, setup2 },
 #if !defined(UCLINUX)
 	{ High_address_node, "Address beyond address space", EFAULT, no_setup},
 	{ (char *)-1, "Negative address", EFAULT, no_setup },
 #endif
 	{ Longpathname, "Pathname too long", ENAMETOOLONG, longpath_setup },
 	{ "", "Pathname is empty", ENOENT, no_setup },
 	{ NULL, NULL, 0, no_setup }
 };
 int TST_TOTAL = sizeof(Test_cases) / sizeof(*Test_cases);

 void setup();			/* Main setup function for the test */
 void cleanup();			/* Main cleanup function for the test */

 int
 main(int ac, char **av)
 {
 	int lc;			/* loop counter */
 	char *msg;		/* message returned from parse_opts */
 	char *file_name;	/* testfile name */
 	char *test_desc;	/* test specific error message */
 	int ind;

 	/* Parse standard options given to run the test. */
 	msg = parse_opts(ac, av, (option_t *) NULL, NULL);
 	if (msg != (char *) NULL) {
 		tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
 		tst_exit();
 	}

 	/*
 	 * Perform global setup for test to call individual test specific
 	 * setup functions.
 	 */
 	setup();

 	/* set the expected errnos... */
 	TEST_EXP_ENOS(exp_enos);

 	/* Check 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 (ind = 0; Test_cases[ind].desc != NULL; ind++) {
 			file_name = Test_cases[ind].pathname;
 			test_desc = Test_cases[ind].desc;

 #if !defined(UCLINUX)
 			if (file_name == High_address_node) {
 				file_name = (char *)get_high_address();
 			}
 #endif

 			/*
 			 * Call truncate(2) to test different test conditions.
 			 * verify that it fails with return code -1 and sets
 			 * appropriate errno.
 			 */
 			TEST(truncate(file_name, TRUNC_LEN));

 			/* check return code of truncate(2) */
 			if (TEST_RETURN == -1) {
 				TEST_ERROR_LOG(TEST_ERRNO);
 				if (TEST_ERRNO == \
 					Test_cases[ind].exp_errno) {
 					tst_resm(TPASS, "truncate() fails, %s, "
 						"errno=%d", test_desc,
 						TEST_ERRNO);
 				} else {
 					tst_resm(TFAIL, "truncate() fails, %s, "
 						"errno=%d, expected errno:%d",
 						 test_desc, TEST_ERRNO,
 						 Test_cases[ind].exp_errno);
 				}
 			} else {
 				tst_resm(TFAIL, "truncate() returned %d, "
 					"expected -1, errno:%d",
 					TEST_RETURN,
 					Test_cases[ind].exp_errno);
 			}
 		}	/* End of TEST CASE LOOPING. */
 		Tst_count++;			/* incr TEST_LOOP counter */
 	}	/* End for TEST_LOOPING */

 	/* Call cleanup() to undo setup done for the test. */
 	cleanup();
 	/*NOTREACHED*/


   return 0;

 }	/* End main */

 /*
  * void
  * setup() - performs all ONE TIME setup for this test.
  *  Create a temporary directory and change directory to it.
  *  Create a test file under temporary directory and write some data
  *  into it, close it.
  *  Call individual test specific setup functions.
  */
 void
 setup()
 {
 	int fd, i, ind;			/* file handler for testfile */
 	int c, c_total = 0;		/* no. of bytes written to file */
 	char tst_buff[BUF_SIZE];	/* buffer to hold data */

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

 	/* 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");
          }


 	/* Pause if that option was specified
 	 * TEST_PAUSE contains the code to fork the test with the -i option.
 	 * You want to make sure you do this before you create your temporary
 	 * directory.
 	 */
 	TEST_PAUSE;

 	/* make a temp directory and cd to it */
 	tst_tmpdir();

 	/* Fill the test buffer with the known data */
 	for (i = 0; i < BUF_SIZE; i++) {
 		tst_buff[i] = 'a';
 	}

 	/* Creat a testfile and open it for reading/writing */
 	if ((fd = open(TEST_FILE1, O_RDWR|O_CREAT, FILE_MODE)) == -1) {
 		tst_brkm(TBROK, cleanup,
 			 "open(%s, O_RDWR|O_CREAT, %o) Failed, errno=%d : %s",
 			 TEST_FILE1, FILE_MODE, errno, strerror(errno));
 		/*NOTREACHED*/
 	}

 	/* Write to the file 1k data from the buffer */
 	while (c_total < FILE_SIZE) {
 		if ((c = write(fd, tst_buff, sizeof(tst_buff))) <= 0) {
 			tst_brkm(TBROK, cleanup,
 				 "write(2) on %s Failed, errno=%d : %s",
 				 TEST_FILE1, errno, strerror(errno));
 			/*NOTREACHED*/
 		} else {
 			c_total += c;
 		}
 	}

 	/* Close the testfile after writing data into it */
 	if (close(fd) == -1) {
 		tst_brkm(TBROK, cleanup,
 			 "close(%s) Failed, errno=%d : %s",
 			 TEST_FILE1, errno, strerror(errno));
 		/*NOTREACHED*/
 	}

 #if !defined(UCLINUX)
 	bad_addr = mmap(0, 1, PROT_NONE,
 			MAP_PRIVATE_EXCEPT_UCLINUX|MAP_ANONYMOUS, 0, 0);
 	if (bad_addr == MAP_FAILED) {
 		tst_brkm(TBROK, cleanup, "mmap failed");
 	}
 	Test_cases[3].pathname = bad_addr;
 #endif

 	/* call individual setup functions */
 	for (ind = 0; Test_cases[ind].desc != NULL; ind++) {
 		Test_cases[ind].setupfunc();
 	}
 }	/* End setup() */

 /*
  * int
  * no_setup() - Some test conditions for mknod(2) do not any setup.
  *              Hence, this function just returns 0.
  *  This function simply returns 0.
  */
 int
 no_setup()
 {
         return 0;
 }

 /*
  * int
  * setup1() - setup function for a test condition for which truncate(2)
  *            returns -1 and sets errno to EACCES.
  *  Modify the mode permissions on testfile such that process will not
  *  have write permissions on it.
  *
  *  The function returns 0.
  */
 int
 setup1()
 {
 	/* Change mode permissions on test file */
 	if (chmod(TEST_FILE1, NEW_MODE) < 0) {
 		tst_brkm(TBROK, cleanup, "chmod(2) of %s failed", TEST_FILE1);
 		/*NOTREACHED*/
 	}

 	return 0;
 }	/* End setup() */

 /*
  * int
  * setup2() - setup function for a test condition for which truncate(2)
  *           returns -1 and sets errno to ENOTDIR.
  *
  *  Create a test file under temporary directory so that test tries to
  *  truncate testfile under "t_file" which happens to be another regular file.
  *  The function returns 0.
  */
 int
 setup2()
 {
 	int fildes;

 	/* creat/open a test file under temporary directory */
 	if ((fildes = open("t_file", O_RDWR|O_CREAT, FILE_MODE)) == -1) {
 		tst_brkm(TBROK, cleanup,
 			 "open(2) on t_file failed, errno=%d : %s",
 			 errno, strerror(errno));
 		/*NOTREACHED*/
 	}
 	/* Close the file created above */
 	if (close(fildes) == -1) {
 		tst_brkm(TBROK, cleanup,
 			 "close(t_file) Failed, errno=%d : %s",
 			 errno, strerror(errno));
 		/*NOTREACHED*/
 	}
 	return 0;
 }

 /*
  * int
  * longpath_setup() - setup to create a node with a name length exceeding
  *                    the MAX. length of PATH_MAX.
  *   This function retruns 0.
  */
 int
 longpath_setup()
 {
 	int ind;                /* counter variable */

 	for (ind = 0; ind <= (PATH_MAX + 1); ind++) {
 		Longpathname[ind] = 'a';
 	}
 	return 0;
 }

 /*
  * void
  * cleanup() - performs all ONE TIME cleanup for this test at
  *	       completion or premature exit.
  *  Remove the test directory and testfile created in the setup.
  */
 void
 cleanup()
 {
 	/*
 	 * print timing stats if that option was specified.
 	 */
 	TEST_CLEANUP;

 	/* Remove tmp dir and all files in it */
 	tst_rmdir();

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

	/*
	* Test Name: truncate03
	*
	* Test Description:
	* Verify that,
	* 1) truncate(2) returns -1 and sets errno to EACCES if search/write
	* permission denied for the process on the component of the path prefix
	* or named file.
	* 2) truncate(2) returns -1 and sets errno to ENOTDIR if the component of
	* the path prefix is not a directory.
	* 3) truncate(2) returns -1 and sets errno to EFAULT if pathname points
	* outside user's accessible address space.
	* 4) truncate(2) returns -1 and sets errno to ENAMETOOLONG if the component
	* of a pathname exceeded 255 characters or entire pathname exceeds 1023
	* characters.
	* 5) truncate(2) returns -1 and sets errno to ENOENT if the named file
	* does not exist.
	*
	* Expected Result:
	* truncate() should fail with return value -1 and set expected errno.
	*
	* Algorithm:
	* Setup:
	* Setup signal handling.
	* Create temporary directory.
	* Pause for SIGUSR1 if option specified.
	*
	* Test:
	* Loop if the proper options are given.
	* Execute system call
	* Check return code, if system call failed (return=-1)
	* if errno set == expected errno
	* Issue sys call fails with expected return value and errno.
	* Otherwise,
	* Issue sys call fails with unexpected errno.
	* Otherwise,
	* Issue sys call returns unexpected value.
	*
	* Cleanup:
	* Print errno log and/or timing stats if options given
	* Delete the temporary directory(s)/file(s) created.
	*
	* Usage: <for command-line>
	* truncate03 [-c n] [-e] [-f] [-i n] [-I x] [-p x] [-t]
	* where, -c n : Run n copies concurrently.
	* -e : Turn on errno logging.
	* -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
	* 07/2001 John George
	* -Ported
	*
	* Restrictions:
	* This test should be executed by 'non-super-user' only.
	*
	*/

	#include <stdio.h>
	#include <sys/types.h>
	#include <sys/stat.h>
	#include <sys/fcntl.h>
	#include <sys/mman.h>
	#include <errno.h>
	#include <string.h>
	#include <signal.h>
	#include <pwd.h>

	#include "test.h"
	#include "usctest.h"

	#define TEST_FILE1 "testfile" /* file under test */
	#define TEST_FILE2 "t_file/testfile" /* file under test */
	#define FILE_MODE S_IRUSR \| S_IWUSR \| S_IRGRP \| S_IROTH
	#define NEW_MODE S_IRUSR \| S_IRGRP \| S_IROTH
	#define BUF_SIZE 256 /* buffer size */
	#define FILE_SIZE 1024 /* test file size */
	#define TRUNC_LEN 256 /* truncation length */
	char nobody_uid[] = "nobody";
	struct passwd *ltpuser;

	int no_setup();
	int setup1(); /* setup function to test chmod for EACCES */
	int setup2(); /* setup function to test chmod for ENOTDIR */
	int longpath_setup(); /* setup function to test chmod for ENAMETOOLONG */

	TCID_DEFINE(truncate03); /* Test program identifier. */
	extern int Tst_count; /* Test Case counter for tst_* routines */
	int exp_enos[]={EACCES, ENOTDIR, EFAULT, ENAMETOOLONG, ENOENT, 0};

	char * bad_addr = 0;

	char Longpathname[PATH_MAX+2];
	char High_address_node[64];

	struct test_case_t { /* test case struct. to hold ref. test cond's*/
	char *pathname;
	char *desc;
	int exp_errno;
	int (*setupfunc)();
	} Test_cases[] = {
	{ TEST_FILE1, "No Search permissions to process", EACCES, setup1 },
	{ TEST_FILE2, "Path contains regular file", ENOTDIR, setup2 },
	#if !defined(UCLINUX)
	{ High_address_node, "Address beyond address space", EFAULT, no_setup},
	{ (char *)-1, "Negative address", EFAULT, no_setup },
	#endif
	{ Longpathname, "Pathname too long", ENAMETOOLONG, longpath_setup },
	{ "", "Pathname is empty", ENOENT, no_setup },
	{ NULL, NULL, 0, no_setup }
	};
	int TST_TOTAL = sizeof(Test_cases) / sizeof(*Test_cases);

	void setup(); /* Main setup function for the test */
	void cleanup(); /* Main cleanup function for the test */

	int
	main(int ac, char **av)
	{
	int lc; /* loop counter */
	char msg; / message returned from parse_opts */
	char file_name; / testfile name */
	char test_desc; / test specific error message */
	int ind;

	/* Parse standard options given to run the test. */
	msg = parse_opts(ac, av, (option_t *) NULL, NULL);
	if (msg != (char *) NULL) {
	tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
	tst_exit();
	}

	/*
	* Perform global setup for test to call individual test specific
	* setup functions.
	*/
	setup();

	/* set the expected errnos... */
	TEST_EXP_ENOS(exp_enos);

	/* Check 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 (ind = 0; Test_cases[ind].desc != NULL; ind++) {
	file_name = Test_cases[ind].pathname;
	test_desc = Test_cases[ind].desc;

	#if !defined(UCLINUX)
	if (file_name == High_address_node) {
	file_name = (char *)get_high_address();
	}
	#endif

	/*
	* Call truncate(2) to test different test conditions.
	* verify that it fails with return code -1 and sets
	* appropriate errno.
	*/
	TEST(truncate(file_name, TRUNC_LEN));

	/* check return code of truncate(2) */
	if (TEST_RETURN == -1) {
	TEST_ERROR_LOG(TEST_ERRNO);
	if (TEST_ERRNO == \
	Test_cases[ind].exp_errno) {
	tst_resm(TPASS, "truncate() fails, %s, "
	"errno=%d", test_desc,
	TEST_ERRNO);
	} else {
	tst_resm(TFAIL, "truncate() fails, %s, "
	"errno=%d, expected errno:%d",
	test_desc, TEST_ERRNO,
	Test_cases[ind].exp_errno);
	}
	} else {
	tst_resm(TFAIL, "truncate() returned %d, "
	"expected -1, errno:%d",
	TEST_RETURN,
	Test_cases[ind].exp_errno);
	}
	} /* End of TEST CASE LOOPING. */
	Tst_count++; /* incr TEST_LOOP counter */
	} /* End for TEST_LOOPING */

	/* Call cleanup() to undo setup done for the test. */
	cleanup();
	/NOTREACHED/


	return 0;

	} /* End main */

	/*
	* void
	* setup() - performs all ONE TIME setup for this test.
	* Create a temporary directory and change directory to it.
	* Create a test file under temporary directory and write some data
	* into it, close it.
	* Call individual test specific setup functions.
	*/
	void
	setup()
	{
	int fd, i, ind; /* file handler for testfile */
	int c, c_total = 0; /* no. of bytes written to file */
	char tst_buff[BUF_SIZE]; /* buffer to hold data */

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

	/* 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");
	}


	/* Pause if that option was specified
	* TEST_PAUSE contains the code to fork the test with the -i option.
	* You want to make sure you do this before you create your temporary
	* directory.
	*/
	TEST_PAUSE;

	/* make a temp directory and cd to it */
	tst_tmpdir();

	/* Fill the test buffer with the known data */
	for (i = 0; i < BUF_SIZE; i++) {
	tst_buff[i] = 'a';
	}

	/* Creat a testfile and open it for reading/writing */
	if ((fd = open(TEST_FILE1, O_RDWR\|O_CREAT, FILE_MODE)) == -1) {
	tst_brkm(TBROK, cleanup,
	"open(%s, O_RDWR\|O_CREAT, %o) Failed, errno=%d : %s",
	TEST_FILE1, FILE_MODE, errno, strerror(errno));
	/NOTREACHED/
	}

	/* Write to the file 1k data from the buffer */
	while (c_total < FILE_SIZE) {
	if ((c = write(fd, tst_buff, sizeof(tst_buff))) <= 0) {
	tst_brkm(TBROK, cleanup,
	"write(2) on %s Failed, errno=%d : %s",
	TEST_FILE1, errno, strerror(errno));
	/NOTREACHED/
	} else {
	c_total += c;
	}
	}

	/* Close the testfile after writing data into it */
	if (close(fd) == -1) {
	tst_brkm(TBROK, cleanup,
	"close(%s) Failed, errno=%d : %s",
	TEST_FILE1, errno, strerror(errno));
	/NOTREACHED/
	}

	#if !defined(UCLINUX)
	bad_addr = mmap(0, 1, PROT_NONE,
	MAP_PRIVATE_EXCEPT_UCLINUX\|MAP_ANONYMOUS, 0, 0);
	if (bad_addr == MAP_FAILED) {
	tst_brkm(TBROK, cleanup, "mmap failed");
	}
	Test_cases[3].pathname = bad_addr;
	#endif

	/* call individual setup functions */
	for (ind = 0; Test_cases[ind].desc != NULL; ind++) {
	Test_cases[ind].setupfunc();
	}
	} /* End setup() */

	/*
	* int
	* no_setup() - Some test conditions for mknod(2) do not any setup.
	* Hence, this function just returns 0.
	* This function simply returns 0.
	*/
	int
	no_setup()
	{
	return 0;
	}

	/*
	* int
	* setup1() - setup function for a test condition for which truncate(2)
	* returns -1 and sets errno to EACCES.
	* Modify the mode permissions on testfile such that process will not
	* have write permissions on it.
	*
	* The function returns 0.
	*/
	int
	setup1()
	{
	/* Change mode permissions on test file */
	if (chmod(TEST_FILE1, NEW_MODE) < 0) {
	tst_brkm(TBROK, cleanup, "chmod(2) of %s failed", TEST_FILE1);
	/NOTREACHED/
	}

	return 0;
	} /* End setup() */

	/*
	* int
	* setup2() - setup function for a test condition for which truncate(2)
	* returns -1 and sets errno to ENOTDIR.
	*
	* Create a test file under temporary directory so that test tries to
	* truncate testfile under "t_file" which happens to be another regular file.
	* The function returns 0.
	*/
	int
	setup2()
	{
	int fildes;

	/* creat/open a test file under temporary directory */
	if ((fildes = open("t_file", O_RDWR\|O_CREAT, FILE_MODE)) == -1) {
	tst_brkm(TBROK, cleanup,
	"open(2) on t_file failed, errno=%d : %s",
	errno, strerror(errno));
	/NOTREACHED/
	}
	/* Close the file created above */
	if (close(fildes) == -1) {
	tst_brkm(TBROK, cleanup,
	"close(t_file) Failed, errno=%d : %s",
	errno, strerror(errno));
	/NOTREACHED/
	}
	return 0;
	}

	/*
	* int
	* longpath_setup() - setup to create a node with a name length exceeding
	* the MAX. length of PATH_MAX.
	* This function retruns 0.
	*/
	int
	longpath_setup()
	{
	int ind; /* counter variable */

	for (ind = 0; ind <= (PATH_MAX + 1); ind++) {
	Longpathname[ind] = 'a';
	}
	return 0;
	}

	/*
	* void
	* cleanup() - performs all ONE TIME cleanup for this test at
	* completion or premature exit.
	* Remove the test directory and testfile created in the setup.
	*/
	void
	cleanup()
	{
	/*
	* print timing stats if that option was specified.
	*/
	TEST_CLEANUP;

	/* Remove tmp dir and all files in it */
	tst_rmdir();

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