325 lines
		
	
	
		
			8.7 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			325 lines
		
	
	
		
			8.7 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/*
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 *
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 *   Copyright (c) International Business Machines  Corp., 2001
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 *
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 *   This program is free software;  you can redistribute it and/or modify
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 *   it under the terms of the GNU General Public License as published by
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 *   the Free Software Foundation; either version 2 of the License, or
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 *   (at your option) any later version.
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 *
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 *   This program is distributed in the hope that it will be useful,
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 *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
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 *   the GNU General Public License for more details.
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 *
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 *   You should have received a copy of the GNU General Public License
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 *   along with this program;  if not, write to the Free Software
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 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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 */
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/* 
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 * Test Name: ftruncate03
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 *
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 * Test Description:
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 *  Verify that,
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 *  1) ftruncate(2) returns -1 and sets errno to EINVAL if the specified
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 *     truncate length is less than 0.
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 *  2) ftruncate(2) returns -1 and sets errno to EBADF if the file descriptor
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 *     of the specified file is not valid.
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 *
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 * Expected Result:
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 *  ftruncate() should fail with return value -1 and set expected errno.
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 *
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 * Algorithm:
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 *  Setup:
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 *   Setup signal handling.
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 *   Create temporary directory.
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 *   Pause for SIGUSR1 if option specified.
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 *
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 *  Test:
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 *   Loop if the proper options are given.
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 *   Execute system call
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 *   Check return code, if system call failed (return=-1)
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 *   	if errno set == expected errno
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 *   		Issue sys call fails with expected return value and errno.
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 *   	Otherwise,
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 *		Issue sys call fails with unexpected errno.
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 *   Otherwise,
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 *	Issue sys call returns unexpected value.
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 *
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 *  Cleanup:
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 *   Print errno log and/or timing stats if options given
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 *   Delete the temporary directory(s)/file(s) created.
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 *
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 * Usage:  <for command-line>
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 *  ftruncate03 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
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 *     where,  -c n : Run n copies concurrently.
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 *             -e   : Turn on errno logging.
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 *	       -i n : Execute test n times.
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 *	       -I x : Execute test for x seconds.
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 *	       -P x : Pause for x seconds between iterations.
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 *	       -t   : Turn on syscall timing.
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 *
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 * HISTORY
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 *	07/2001 Ported by Wayne Boyer
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 *
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 * RESTRICTIONS:
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 *  This test should be executed by 'non-super-user'  only.
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 */
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/fcntl.h>
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#include <errno.h>
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#include <string.h>
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#include <signal.h>
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#include "test.h"
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#include "usctest.h"
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#define TEST_FILE1	"test_file1"		/* file under test */
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#define TEST_FILE2	"test_file2"		/* file under test */
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#define FILE_MODE	S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH
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#define BUF_SIZE	256			/* buffer size */
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#define FILE_SIZE	1024			/* test file size */
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int no_setup();
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int setup1();			/* setup function to test chmod for EBADF */
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int setup2();			/* setup function to test chmod for EINVAL */
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int fd1;			/* File descriptor for testfile1 */
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int fd2;			/* File descriptor for testfile2 */
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struct test_case_t {		/* test case struct. to hold ref. test cond's*/
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	int fd;
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	const char *desc;
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	int exp_errno;
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	int len;
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	int (*setupfunc)();
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} Test_cases[] = {
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	{ 1, "Length argument is -ve", EINVAL, -1, setup1 },
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	{ 2, "File descriptor is not valid", EBADF, 256, setup2 },
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	{ 0, NULL, 0, 0, no_setup }
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};
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const char *TCID="ftruncate03";	/* Test program identifier.    */
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int TST_TOTAL=2;		/* Total number of test conditions */
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extern int Tst_count;		/* Test Case counter for tst_* routines */
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int exp_enos[]={EINVAL, EBADF, 0};
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void setup();			/* Main setup function for the test */
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void cleanup(void) __attribute__((noreturn));			/* Main cleanup function for the test */
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int
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main(int ac, char **av)
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{
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	int lc;			/* loop counter */
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	const char *msg;	/* message returned from parse_opts */
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	const char *test_desc;	/* test specific error message */
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	int fildes;		/* File descriptor of testfile */
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	off_t trunc_len;	/* truncate length */
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	int ind;
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	/* Parse standard options given to run the test. */
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	msg = parse_opts(ac, av, (option_t *) NULL, NULL);
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	if (msg != (char *) NULL) {
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		tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
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		tst_exit();
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	}
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	/*
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	 * Perform global setup for test to call individual test specific
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	 * setup functions.
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	 */
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	setup();
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	/* set the expected errnos... */
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	TEST_EXP_ENOS(exp_enos);
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	/* Check looping state if -i option given */
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	for (lc = 0; TEST_LOOPING(lc); lc++) {
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		/* Reset Tst_count in case we are looping. */
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		Tst_count = 0;
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		for (ind = 0; Test_cases[ind].desc != NULL; ind++) {
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			fildes = Test_cases[ind].fd;
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			test_desc = Test_cases[ind].desc;
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			trunc_len = Test_cases[ind].len;
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			if (fildes == 1) {
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				fildes = fd1;
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			} else {
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				fildes = fd2;
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			}
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			/* 
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			 * Call ftruncate(2) to test different test conditions.
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			 * verify that it fails with return code -1 and sets
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			 * appropriate errno.
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			 */
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			TEST(ftruncate(fildes, trunc_len));
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			/* check return code of ftruncate(2) */
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			if (TEST_RETURN == -1) {
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				TEST_ERROR_LOG(TEST_ERRNO);
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				if (TEST_ERRNO == Test_cases[ind].exp_errno) {
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					tst_resm(TPASS, "ftruncate() fails, %s,"
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						 " errno=%d", test_desc,
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						 TEST_ERRNO);
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				} else {
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					tst_resm(TFAIL, "ftruncate() fails, %s,"
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						 " errno=%d, expected errno:%d",
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						 test_desc, TEST_ERRNO,
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						 Test_cases[ind].exp_errno);
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				}
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			} else {
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				tst_resm(TFAIL, "ftruncate() returned %d, "
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					 "expected -1, errno:%d", TEST_RETURN,
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					 Test_cases[ind].exp_errno);
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			}
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		}	/* End of TEST CASE LOOPING. */
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	}	/* End for TEST_LOOPING */
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	/* Call cleanup() to undo setup done for the test. */
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	cleanup();
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	/*NOTREACHED*/
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}	/* End main */
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/*
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 * void
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 * setup() - performs all ONE TIME setup for this test.
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 *  Create a temporary directory and change directory to it.
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 *  Fill the test buffer with some date used to fill test file(s).
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 *  Call individual test specific setup functions.
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 */
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void 
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setup()
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{
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	int ind;
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	/* capture signals */
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	tst_sig(NOFORK, DEF_HANDLER, cleanup);
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	/* Check that the test process id is not root/super-user */
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	if (geteuid() == 0) {
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		tst_brkm(TBROK, NULL, "Must be non-root/super for this test!");
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		tst_exit();
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	}
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	/* Pause if that option was specified */
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	TEST_PAUSE;
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	/* make a temp directory and cd to it */
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	tst_tmpdir();
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	/* call individual setup functions */
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	for (ind = 0; Test_cases[ind].desc != NULL; ind++) {
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		Test_cases[ind].setupfunc();
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	}
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}	/* End of setup */
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/*
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 * int
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 * setup1() - setup function for a test condition for which ftruncate(2)
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 *	      returns -1 and sets errno to EINVAL.
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 *  Create a test file and open it for writing only.
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 */
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int
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setup1()
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{
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	/* Open the testfile in write-only mode */
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	if ((fd1 = open(TEST_FILE1, O_WRONLY|O_CREAT, 0644)) == -1) {
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		tst_brkm(TBROK, cleanup,
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			 "open(%s, O_WRONLY) Failed, errno=%d : %s",
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			 TEST_FILE1, errno, strerror(errno));
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	}
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	return 0;
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}	/* End setup1() */
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/*
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 * int
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 * setup2() - setup function for a test condition for which ftruncate(2)
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 *            returns -1 and sets errno to EBADF.
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 *  Create a test file and open it for reading/writing, and fill the
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 *  testfile with the contents of test buffer.
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 *  Close the test file.
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 *
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 */
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int
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setup2()
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{
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	int c, i, c_total = 0;
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	char tst_buff[BUF_SIZE];	/* buffer to hold testfile contents */
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	/* Fill the test buffer with the known data */
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	for (i = 0; i < BUF_SIZE; i++) {
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		tst_buff[i] = 'a';
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	}
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	/* open a testfile for reading/writing */
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	if ((fd2 = open(TEST_FILE2, O_RDWR|O_CREAT, FILE_MODE)) == -1) {
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		tst_brkm(TBROK, cleanup,
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			 "open(%s, O_RDWR|O_CREAT, %o) Failed, errno=%d : %s",
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			 TEST_FILE2, FILE_MODE, errno, strerror(errno));
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	}
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	/* Write to the file 1k data from the buffer */
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	while (c_total < FILE_SIZE) {
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		if ((c = write(fd2, tst_buff, sizeof(tst_buff))) <= 0) {
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			tst_brkm(TBROK, cleanup,
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				 "write(2) on %s Failed, errno=%d : %s",
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				 TEST_FILE2, errno, strerror(errno));
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		} else {
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			c_total += c;
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		}
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	}
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	/* Close the testfile after writing data into it */
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	if (close(fd2) == -1) {
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		tst_brkm(TBROK, cleanup,
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			 "close(%s) Failed, errno=%d : %s",
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			 TEST_FILE2, errno, strerror(errno));
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	}
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	return 0;
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}	/* End of setup2 */
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/*
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 * int
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 * no_setup() - This function just returns 0.
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 */
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int
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no_setup()
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{
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	return 0;
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}
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/*
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 * void
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 * cleanup() - performs all ONE TIME cleanup for this test at
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 *	       completion or premature exit.
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 *  Close the temporary file.
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 *  Remove the test directory and testfile created in the setup.
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 */
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void 
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cleanup()
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{
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	/*
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	 * print timing stats if that option was specified.
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	 */
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	TEST_CLEANUP;
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	/* Close the testfile after opening it read-only in setup1 */
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	if (close(fd1) == -1) {
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		tst_brkm(TFAIL, NULL,
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			 "close(%s) Failed, errno=%d : %s",
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			 TEST_FILE1, errno, strerror(errno));
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	}
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	/* Remove tmp dir and all files in it */
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	tst_rmdir();
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	/* exit with return code appropriate for results */
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	tst_exit();
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}	/* End cleanup() */
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