xref: /third_party/ltp/testcases/kernel/syscalls/fcntl/fcntl24.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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**********************************************************
 *
 *    TEST IDENTIFIER	: fcntl24
 *
 *    EXECUTED BY	: anyone
 *
 *    TEST TITLE	: Basic test for fcntl(2) using F_SETLEASE & F_WRLCK argument.
 *
 *    TEST CASE TOTAL	: 1
 *
 *    WALL CLOCK TIME	: 1
 *
 *    CPU TYPES		: ALL
 *
 *    AUTHOR		: Robbie Williamson
 *
 *    TEST CASES
 *
 *	1.) fcntl(2) returns...(See Description)
 *
 *    INPUT SPECIFICATIONS
 *	The standard options for system call tests are accepted.
 *	(See the parse_opts(3) man page).
 *
 *    OUTPUT SPECIFICATIONS
 *
 *    DURATION
 *	Terminates - with frequency and infinite modes.
 *
 *    SIGNALS
 *	Uses SIGUSR1 to pause before test if option set.
 *	(See the parse_opts(3) man page).
 *
 *    RESOURCES
 *	None
 *
 *    ENVIRONMENTAL NEEDS
 *      No run-time environmental needs.
 *
 *    SPECIAL PROCEDURAL REQUIREMENTS
 *	None
 *
 *    INTERCASE DEPENDENCIES
 *	None
 *
 *    DETAILED DESCRIPTION
 *	This is a Phase I test for the fcntl(2) system call.  It is intended
 *	to provide a limited exposure of the system call, for now.  It
 *	should/will be extended when full functional tests are written for
 *	fcntl(2).
 *
 *	Setup:
 *	  Setup signal handling.
 *	  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)
 *		Log the errno and Issue a FAIL message.
 *	  Otherwise, Issue a PASS message.
 *
 *	Cleanup:
 *	  Print errno log and/or timing stats if options given
 *
 *
 *#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#**/

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <signal.h>
#include "test.h"

void setup();
void cleanup();

char *TCID = "fcntl24";
int TST_TOTAL = 1;

char fname[255];
int fd;

int main(int ac, char **av)
{
	int lc;
	long type;

    /***************************************************************
     * parse standard options
     ***************************************************************/
	tst_parse_opts(ac, av, NULL, NULL);

    /***************************************************************
     * perform global setup for test
     ***************************************************************/
	setup();

	switch ((type = tst_fs_type(cleanup, "."))) {
	case TST_NFS_MAGIC:
	case TST_RAMFS_MAGIC:
	case TST_TMPFS_MAGIC:
		tst_brkm(TCONF, cleanup,
			 "Cannot do fcntl on a file on %s filesystem",
			 tst_fs_type_name(type));
	break;
	}

    /***************************************************************
     * check looping state if -c option given
     ***************************************************************/
	for (lc = 0; TEST_LOOPING(lc); lc++) {

		tst_count = 0;

#ifdef F_SETLEASE
		/*
		 * Call fcntl(2) with F_SETLEASE & F_WRLCK argument on fname
		 */
		TEST(fcntl(fd, F_SETLEASE, F_WRLCK));

		/* check return code */
		if (TEST_RETURN == -1) {
			if (type == TST_OVERLAYFS_MAGIC && TEST_ERRNO == EAGAIN) {
				tst_resm(TINFO | TTERRNO,
					 "fcntl(F_SETLEASE, F_WRLCK) failed on overlayfs as expected");
			} else {
				tst_resm(TFAIL,
					"fcntl(%s, F_SETLEASE, F_WRLCK) Failed, errno=%d : %s",
					fname, TEST_ERRNO, strerror(TEST_ERRNO));
			}
		} else {
			TEST(fcntl(fd, F_GETLEASE));
			if (TEST_RETURN != F_WRLCK)
				tst_resm(TFAIL,
					 "fcntl(%s, F_GETLEASE) did not return F_WRLCK, returned %ld",
					 fname, TEST_RETURN);
			else {
				TEST(fcntl(fd, F_SETLEASE, F_UNLCK));
				if (TEST_RETURN != 0)
						tst_resm(TFAIL,
						 "fcntl(%s, F_SETLEASE, F_UNLCK) did not return 0, returned %ld",
						 fname, TEST_RETURN);
				else
					tst_resm(TPASS,
						 "fcntl(%s, F_SETLEASE, F_WRLCK)",
						 fname);
			}
		}
#else
		tst_resm(TINFO, "F_SETLEASE not defined, skipping test");
#endif
	}

	cleanup();
	tst_exit();
}

/***************************************************************
 * setup() - performs all ONE TIME setup for this test.
 ***************************************************************/
void setup(void)
{

	tst_sig(NOFORK, DEF_HANDLER, cleanup);

	TEST_PAUSE;

	tst_tmpdir();

	sprintf(fname, "tfile_%d", getpid());
	if ((fd = open(fname, O_RDWR | O_CREAT, 0777)) == -1) {
		tst_brkm(TBROK, cleanup,
			 "open(%s, O_RDWR|O_CREAT,0777) Failed, errno=%d : %s",
			 fname, errno, strerror(errno));
	}
}

/***************************************************************
 * cleanup() - performs all ONE TIME cleanup for this test at
 *		completion or premature exit.
 ***************************************************************/
void cleanup(void)
{

	/* close the file we've had open */
	if (close(fd) == -1) {
		tst_resm(TWARN, "close(%s) Failed, errno=%d : %s", fname, errno,
			 strerror(errno));
	}

	tst_rmdir();

}