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      1 /*
      2  * Copyright (c) Wipro Technologies Ltd, 2002.  All Rights Reserved.
      3  *
      4  * This program is free software; you can redistribute it and/or modify it
      5  * under the terms of version 2 of the GNU General Public License as
      6  * published by the Free Software Foundation.
      7  *
      8  * This program is distributed in the hope that it would be useful, but
      9  * WITHOUT ANY WARRANTY; without even the implied warranty of
     10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
     11  *
     12  * You should have received a copy of the GNU General Public License along
     13  * with this program; if not, write the Free Software Foundation, Inc.,
     14  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
     15  *
     16  */
     17 /**********************************************************
     18  *
     19  *    TEST IDENTIFIER   : fdatasync01
     20  *
     21  *    EXECUTED BY       : Any user
     22  *
     23  *    TEST TITLE        : Basic test for fdatasync(2)
     24  *
     25  *    TEST CASE TOTAL   : 1
     26  *
     27  *    AUTHOR            : Madhu T L <madhu.tarikere (at) wipro.com>
     28  *
     29  *    SIGNALS
     30  *	Uses SIGUSR1 to pause before test if option set.
     31  *	(See the parse_opts(3) man page).
     32  *
     33  *    DESCRIPTION
     34  *	This is a Phase I test for the fdatasync(2) system call.
     35  *	It is intended to provide a limited exposure of the system call.
     36  *
     37  *	Setup:
     38  *	  Setup signal handling.
     39  *	  Pause for SIGUSR1 if option specified.
     40  *	  Create a temp directory and cd to it
     41  *	  Initialize filename and open it in write mode for each child process.
     42  *
     43  *	Test:
     44  *	 Loop if the proper options are given.
     45  *	  Execute system call
     46  *	  Check return code, if system call failed (return=-1)
     47  *		Issue FAIL message with errno.
     48  *	  Otherwise, Issue PASS message.
     49  *
     50  *	Cleanup:
     51  *	  Print errno log and/or timing stats if options given
     52  *	  Remove temporary directory and all files in it.
     53  *
     54  * USAGE:  <for command-line>
     55  *  fdatasync01 [-c n] [-e] [-f] [-h] [-i n] [-I x] [-p] [-P x] [-t]
     56  *		where,  -c n : Run n copies concurrently.
     57  *			-e   : Turn on errno logging.
     58  *			-f   : Turn off functional testing
     59  *			-h   : Show help screen
     60  *			-i n : Execute test n times.
     61  *			-I x : Execute test for x seconds.
     62  *			-p   : Pause for SIGUSR1 before starting
     63  *			-P x : Pause for x seconds between iterations.
     64  *			-t   : Turn on syscall timing.
     65  *
     66  ****************************************************************/
     67 #include <errno.h>
     68 #include <sys/types.h>
     69 #include <sys/stat.h>
     70 #include <fcntl.h>
     71 #include <unistd.h>
     72 #include "test.h"
     73 
     74 static int fd;
     75 static char filename[30];
     76 static void setup(void);
     77 static void cleanup(void);
     78 
     79 char *TCID = "fdatasync01";
     80 int TST_TOTAL = 1;
     81 
     82 int main(int argc, char **argv)
     83 {
     84 	int lc;
     85 
     86 	tst_parse_opts(argc, argv, NULL, NULL);
     87 
     88 	setup();
     89 
     90 	for (lc = 0; TEST_LOOPING(lc); lc++) {
     91 
     92 		/* reset tst_count in case we are looping */
     93 		tst_count = 0;
     94 
     95 		/* Test the system call */
     96 		TEST(fdatasync(fd));
     97 
     98 		/* check return code */
     99 		if (TEST_RETURN == -1) {
    100 			tst_resm(TFAIL, "fdatasync() failed, errno=%d : %s",
    101 				 TEST_ERRNO, strerror(TEST_ERRNO));
    102 		} else {
    103 			/* No Functional verification yet */
    104 			tst_resm(TPASS, "fdatasync() successful");
    105 		}
    106 	}
    107 
    108 	/* perform global cleanup and exit */
    109 	cleanup();
    110 
    111 	tst_exit();
    112 
    113 }
    114 
    115 /* setup() - performs all ONE TIME setup for this test */
    116 void setup(void)
    117 {
    118 
    119 	tst_sig(NOFORK, DEF_HANDLER, cleanup);
    120 
    121 	/* Pause if that option was specified
    122 	 * TEST_PAUSE contains the code to fork the test with the -c option.
    123 	 */
    124 	TEST_PAUSE;
    125 
    126 	tst_tmpdir();
    127 
    128 	/* Initialize unique filename for each child process */
    129 	if (sprintf(filename, "fdatasync_%d", getpid()) <= 0) {
    130 		tst_brkm(TBROK, cleanup, "Failed to initialize filename");
    131 	}
    132 	if ((fd = open(filename, O_CREAT | O_WRONLY, 0777)) == -1) {	//mode must be specified when O_CREATE is in the flag
    133 		tst_brkm(TBROK, cleanup, "open() failed");
    134 	}
    135 	if ((write(fd, filename, strlen(filename) + 1)) == -1) {
    136 		tst_brkm(TBROK, cleanup, "write() failed");
    137 	}
    138 }
    139 
    140 /*
    141  * cleanup()
    142  *	performs all ONE TIME cleanup for this test at
    143  *	completion or premature exit
    144  */
    145 void cleanup(void)
    146 {
    147 	/*
    148 	 * print timing stats if that option was specified.
    149 	 * print errno log if that option was specified.
    150 	 */
    151 	close(fd);
    152 
    153 	tst_rmdir();
    154 
    155 }
    156