testcases/kernel/syscalls/linkat/linkat01.c - platform/external/ltp - Gitiles

 /******************************************************************************
  *
  *   Copyright (c) International Business Machines  Corp., 2006
  *
  *   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
  *
  * NAME
  *      linkat01.c
  *
  * DESCRIPTION
  *	This test case will verify basic function of linkat
  *	added by kernel 2.6.16 or up.
  *
  * USAGE:  <for command-line>
  * linkat01 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-p]
  * where:
  *      -c n : Run n copies simultaneously.
  *      -e   : Turn on errno logging.
  *      -i n : Execute test n times.
  *      -I x : Execute test for x seconds.
  *      -p   : Pause for SIGUSR1 before starting
  *      -P x : Pause for x seconds between iterations.
  *      -t   : Turn on syscall timing.
  *
  * Author
  *	Yi Yang <yyangcdl@cn.ibm.com>
  *
  * History
  *      08/25/2006      Created first by Yi Yang <yyangcdl@cn.ibm.com>
  *
  *****************************************************************************/

 #define _GNU_SOURCE

 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/time.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <error.h>
 #include <stdlib.h>
 #include <errno.h>
 #include <string.h>
 #include <signal.h>
 #include <inttypes.h>
 #include <limits.h>
 #include "test.h"
 #include "usctest.h"
 #include "linux_syscall_numbers.h"
 #include "rmobj.h"
 #include "safe_macros.h"

 #ifndef AT_FDCWD
 #define AT_FDCWD -100
 #endif
 #ifndef AT_SYMLINK_FOLLOW
 #define AT_SYMLINK_FOLLOW 0x400
 #endif

 struct test_struct;
 static void setup();
 static void cleanup();
 static void setup_every_copy();
 static void mylinkat_test(struct test_struct *desc);

 #define TEST_DIR1 "olddir"
 #define TEST_DIR2 "newdir"
 #define TEST_DIR3 "deldir"
 #define TEST_FILE1 "oldfile"
 #define TEST_FILE2 "newfile"
 #define TEST_FIFO "fifo"

 #define DPATHNAME_FMT	"%s/" TEST_DIR2 "/" TEST_FILE1
 #define SPATHNAME_FMT	"%s/" TEST_DIR1 "/" TEST_FILE1

 static char dpathname[PATH_MAX];
 static char spathname[PATH_MAX];
 static int olddirfd, newdirfd = -1, cwd_fd = AT_FDCWD, stdinfd = 0, badfd =
     -1, deldirfd;

 struct test_struct {
 	int *oldfd;
 	const char *oldfn;
 	int *newfd;
 	const char *newfn;
 	int flags;
 	const char *referencefn1;
 	const char *referencefn2;
 	int expected_errno;
 } test_desc[] = {
 	/* 1. relative paths */
 	{
 	&olddirfd, TEST_FILE1, &newdirfd, TEST_FILE1, 0,
 		    TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
 	    /* 2. abs path at source */
 	{
 	&olddirfd, spathname, &newdirfd, TEST_FILE1, 0, 0, 0, 0},
 	    /* 3. abs path at dst */
 	{
 	&olddirfd, TEST_FILE1, &newdirfd, dpathname, 0,
 		    TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
 	    /* 4. relative paths to cwd */
 	{
 	&cwd_fd, TEST_DIR1 "/" TEST_FILE1, &newdirfd, TEST_FILE1, 0,
 		    TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
 	    /* 5. relative paths to cwd */
 	{
 	&olddirfd, TEST_FILE1, &cwd_fd, TEST_DIR2 "/" TEST_FILE1, 0,
 		    TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
 	    /* 6. abs path at source */
 	{
 	&cwd_fd, spathname, &newdirfd, TEST_FILE1, 0, 0, 0, 0},
 	    /* 7. abs path at dst */
 	{
 	&olddirfd, TEST_FILE1, &cwd_fd, dpathname, 0,
 		    TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
 	    /* 8. relative paths to invalid */
 	{
 	&stdinfd, TEST_DIR1 "/" TEST_FILE1, &newdirfd, TEST_FILE1, 0,
 		    0, 0, ENOTDIR},
 	    /* 9. relative paths to invalid */
 	{
 	&olddirfd, TEST_FILE1, &stdinfd, TEST_DIR2 "/" TEST_FILE1, 0,
 		    0, 0, ENOTDIR},
 	    /* 10. abs path at source */
 	{
 	&stdinfd, spathname, &newdirfd, TEST_FILE1, 0, 0, 0, 0},
 	    /* 11. abs path at dst */
 	{
 	&olddirfd, TEST_FILE1, &stdinfd, dpathname, 0,
 		    TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
 	    /* 12. relative paths to bad */
 	{
 	&badfd, TEST_DIR1 "/" TEST_FILE1, &newdirfd, TEST_FILE1, 0,
 		    0, 0, EBADF},
 	    /* 13. relative paths to bad */
 	{
 	&olddirfd, TEST_FILE1, &badfd, TEST_DIR2 "/" TEST_FILE1, 0,
 		    0, 0, EBADF},
 	    /* 14. abs path at source */
 	{
 	&badfd, spathname, &newdirfd, TEST_FILE1, 0, 0, 0, 0},
 	    /* 15. abs path at dst */
 	{
 	&olddirfd, TEST_FILE1, &badfd, dpathname, 0,
 		    TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
 	    /* 16. relative paths to deleted */
 	{
 	&deldirfd, TEST_DIR1 "/" TEST_FILE1, &newdirfd, TEST_FILE1, 0,
 		    0, 0, ENOENT},
 	    /* 17. relative paths to deleted */
 	{
 	&olddirfd, TEST_FILE1, &deldirfd, TEST_DIR2 "/" TEST_FILE1, 0,
 		    0, 0, ENOENT},
 	    /* 18. abs path at source */
 	{
 	&deldirfd, spathname, &newdirfd, TEST_FILE1, 0, 0, 0, 0},
 	    /* 19. abs path at dst */
 	{
 	&olddirfd, TEST_FILE1, &deldirfd, dpathname, 0,
 		    TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
 	    /* 20. x-device link */
 	{
 	&cwd_fd, "/proc/cpuinfo", &newdirfd, TEST_FILE1, 0, 0, 0, EXDEV},
 	    /* 21. directory link */
 	{
 	&olddirfd, ".", &newdirfd, TEST_FILE1, 0, 0, 0, EPERM},
 	    /* 22. invalid flag */
 	{
 	&olddirfd, TEST_FILE1, &newdirfd, TEST_FILE1, 1, 0, 0, EINVAL},
 	    /* 23. fifo link */
 	    /* XXX (garrcoop): Removed because it hangs the overall test. Need to
 	     * find a legitimate means to exercise this functionality, if in fact
 	     * it's a valid testcase -- which it should be.
 	     */
 	    /* { &olddirfd, TEST_FIFO, &newdirfd, TEST_FILE1, 0,
 	       TEST_DIR1"/"TEST_FIFO, TEST_DIR2"/"TEST_FILE1, 0 } */
 };

 char *TCID = "linkat01";
 int TST_TOTAL = sizeof(test_desc) / sizeof(*test_desc);

 #define SUCCEED_OR_DIE(syscall, message, ...)		\
 	(errno = 0,					\
 	 ({int ret=syscall(__VA_ARGS__);		\
 	 if (ret==-1)					\
 		tst_brkm(TBROK | TERRNO, cleanup,	\
 			message, __VA_ARGS__);		\
 	 ret; }))

 static int mylinkat(int olddirfd, const char *oldfilename, int newdirfd,
 		    const char *newfilename, int flags)
 {
 	return ltp_syscall(__NR_linkat, olddirfd, oldfilename, newdirfd,
 		       newfilename, flags);
 }

 int main(int ac, char **av)
 {
 	int lc;
 	char *msg;
 	int i;

 	if ((tst_kvercmp(2, 6, 16)) < 0) {
 		tst_resm(TWARN, "This test can only run on kernels that are ");
 		tst_resm(TWARN, "2.6.16 and higher");
 		exit(0);
 	}

 	if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL)
 		tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);

 	setup();

 	for (lc = 0; TEST_LOOPING(lc); lc++) {

 		Tst_count = 0;

 		for (i = 0; i < TST_TOTAL; i++) {
 			setup_every_copy();
 			mylinkat_test(&test_desc[i]);
 		}

 	}

 	cleanup();
 	tst_exit();
 }

 static void setup_every_copy()
 {
 	close(newdirfd);
 	rmobj(TEST_DIR2, NULL);

 	SUCCEED_OR_DIE(mkdir, "mkdir(%s, %o) failed", TEST_DIR2, 0700);
 	newdirfd = SUCCEED_OR_DIE(open, "open(%s, 0x%x) failed",
 				  TEST_DIR2, O_DIRECTORY);
 }

 static void mylinkat_test(struct test_struct *desc)
 {
 	int fd;

 	TEST(mylinkat
 	     (*desc->oldfd, desc->oldfn, *desc->newfd, desc->newfn,
 	      desc->flags));

 	if (TEST_ERRNO == desc->expected_errno) {

 		if (STD_FUNCTIONAL_TEST) {

 			if (TEST_RETURN == 0 && desc->referencefn1 != NULL) {
 				int tnum = rand(), vnum = ~tnum;
 				fd = SAFE_OPEN(cleanup, desc->referencefn1,
 					       O_RDWR);
 				SAFE_WRITE(cleanup, 1, fd, &tnum, sizeof(tnum));
 				SAFE_CLOSE(cleanup, fd);

 				fd = SAFE_OPEN(cleanup, desc->referencefn2,
 					       O_RDONLY);
 				SAFE_READ(cleanup, 1, fd, &vnum, sizeof(vnum));
 				SAFE_CLOSE(cleanup, fd);

 				if (tnum == vnum)
 					tst_resm(TPASS,
 						 "linkat is functionality correct");
 				else {
 					tst_resm(TFAIL,
 						 "The link file's content isn't "
 						 "as same as the original file's "
 						 "although linkat returned 0");
 				}
 			} else {
 				if (TEST_RETURN == 0)
 					tst_resm(TPASS,
 						 "linkat succeeded as expected");
 				else
 					tst_resm(TPASS | TTERRNO,
 						 "linkat failed as expected");
 			}
 		} else
 			tst_resm(TPASS, "Test passed");
 	} else {
 		if (TEST_RETURN == 0)
 			tst_resm(TFAIL, "linkat succeeded unexpectedly");
 		else
 			tst_resm(TFAIL | TTERRNO,
 				 "linkat failed unexpectedly; expected %d - %s",
 				 desc->expected_errno,
 				 strerror(desc->expected_errno));
 	}
 }

 void setup()
 {
 	char *cwd;

 	tst_sig(NOFORK, DEF_HANDLER, cleanup);

 	tst_tmpdir();

 	cwd = get_current_dir_name();
 	if (cwd == NULL)
 		tst_brkm(TFAIL | TERRNO, cleanup,
 			 "Failed to get current working directory");
 	else {

 		SUCCEED_OR_DIE(mkdir, "mkdir(%s, %o) failed", TEST_DIR1, 0700);
 		SUCCEED_OR_DIE(mkdir, "mkdir(%s, %o) failed", TEST_DIR3, 0700);
 		olddirfd = SUCCEED_OR_DIE(open, "open(%s, 0x%x) failed",
 					  TEST_DIR1, O_DIRECTORY);
 		deldirfd = SUCCEED_OR_DIE(open, "open(%s, 0x%x) failed",
 					  TEST_DIR3, O_DIRECTORY);
 		SUCCEED_OR_DIE(rmdir, "rmdir(%s) failed", TEST_DIR3);
 		SUCCEED_OR_DIE(close, "close(%d) failed",
 			       SUCCEED_OR_DIE(open, "open(%s, 0x%x, %o) "
 					      "failed",
 					      TEST_DIR1 "/" TEST_FILE1,
 					      O_CREAT | O_EXCL, 0600));

 		SUCCEED_OR_DIE(mkfifo, "mkfifo(%s, %o) failed",
 			       TEST_DIR1 "/" TEST_FIFO, 0600);

 		snprintf(dpathname, sizeof(dpathname), DPATHNAME_FMT, cwd);
 		snprintf(spathname, sizeof(spathname), SPATHNAME_FMT, cwd);

 		free(cwd);

 		TEST_PAUSE;

 	}

 }

 static void cleanup(void)
 {
 	tst_rmdir();
 	TEST_CLEANUP;
 }
	/******************************************************************************
	*
	* Copyright (c) International Business Machines Corp., 2006
	*
	* 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
	*
	* NAME
	* linkat01.c
	*
	* DESCRIPTION
	* This test case will verify basic function of linkat
	* added by kernel 2.6.16 or up.
	*
	* USAGE: <for command-line>
	* linkat01 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-p]
	* where:
	* -c n : Run n copies simultaneously.
	* -e : Turn on errno logging.
	* -i n : Execute test n times.
	* -I x : Execute test for x seconds.
	* -p : Pause for SIGUSR1 before starting
	* -P x : Pause for x seconds between iterations.
	* -t : Turn on syscall timing.
	*
	* Author
	* Yi Yang <yyangcdl@cn.ibm.com>
	*
	* History
	* 08/25/2006 Created first by Yi Yang <yyangcdl@cn.ibm.com>
	*
	*****************************************************************************/

	#define _GNU_SOURCE

	#include <sys/types.h>
	#include <sys/stat.h>
	#include <sys/time.h>
	#include <fcntl.h>
	#include <unistd.h>
	#include <error.h>
	#include <stdlib.h>
	#include <errno.h>
	#include <string.h>
	#include <signal.h>
	#include <inttypes.h>
	#include <limits.h>
	#include "test.h"
	#include "usctest.h"
	#include "linux_syscall_numbers.h"
	#include "rmobj.h"
	#include "safe_macros.h"

	#ifndef AT_FDCWD
	#define AT_FDCWD -100
	#endif
	#ifndef AT_SYMLINK_FOLLOW
	#define AT_SYMLINK_FOLLOW 0x400
	#endif

	struct test_struct;
	static void setup();
	static void cleanup();
	static void setup_every_copy();
	static void mylinkat_test(struct test_struct *desc);

	#define TEST_DIR1 "olddir"
	#define TEST_DIR2 "newdir"
	#define TEST_DIR3 "deldir"
	#define TEST_FILE1 "oldfile"
	#define TEST_FILE2 "newfile"
	#define TEST_FIFO "fifo"

	#define DPATHNAME_FMT "%s/" TEST_DIR2 "/" TEST_FILE1
	#define SPATHNAME_FMT "%s/" TEST_DIR1 "/" TEST_FILE1

	static char dpathname[PATH_MAX];
	static char spathname[PATH_MAX];
	static int olddirfd, newdirfd = -1, cwd_fd = AT_FDCWD, stdinfd = 0, badfd =
	-1, deldirfd;

	struct test_struct {
	int *oldfd;
	const char *oldfn;
	int *newfd;
	const char *newfn;
	int flags;
	const char *referencefn1;
	const char *referencefn2;
	int expected_errno;
	} test_desc[] = {
	/* 1. relative paths */
	{
	&olddirfd, TEST_FILE1, &newdirfd, TEST_FILE1, 0,
	TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
	/* 2. abs path at source */
	{
	&olddirfd, spathname, &newdirfd, TEST_FILE1, 0, 0, 0, 0},
	/* 3. abs path at dst */
	{
	&olddirfd, TEST_FILE1, &newdirfd, dpathname, 0,
	TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
	/* 4. relative paths to cwd */
	{
	&cwd_fd, TEST_DIR1 "/" TEST_FILE1, &newdirfd, TEST_FILE1, 0,
	TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
	/* 5. relative paths to cwd */
	{
	&olddirfd, TEST_FILE1, &cwd_fd, TEST_DIR2 "/" TEST_FILE1, 0,
	TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
	/* 6. abs path at source */
	{
	&cwd_fd, spathname, &newdirfd, TEST_FILE1, 0, 0, 0, 0},
	/* 7. abs path at dst */
	{
	&olddirfd, TEST_FILE1, &cwd_fd, dpathname, 0,
	TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
	/* 8. relative paths to invalid */
	{
	&stdinfd, TEST_DIR1 "/" TEST_FILE1, &newdirfd, TEST_FILE1, 0,
	0, 0, ENOTDIR},
	/* 9. relative paths to invalid */
	{
	&olddirfd, TEST_FILE1, &stdinfd, TEST_DIR2 "/" TEST_FILE1, 0,
	0, 0, ENOTDIR},
	/* 10. abs path at source */
	{
	&stdinfd, spathname, &newdirfd, TEST_FILE1, 0, 0, 0, 0},
	/* 11. abs path at dst */
	{
	&olddirfd, TEST_FILE1, &stdinfd, dpathname, 0,
	TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
	/* 12. relative paths to bad */
	{
	&badfd, TEST_DIR1 "/" TEST_FILE1, &newdirfd, TEST_FILE1, 0,
	0, 0, EBADF},
	/* 13. relative paths to bad */
	{
	&olddirfd, TEST_FILE1, &badfd, TEST_DIR2 "/" TEST_FILE1, 0,
	0, 0, EBADF},
	/* 14. abs path at source */
	{
	&badfd, spathname, &newdirfd, TEST_FILE1, 0, 0, 0, 0},
	/* 15. abs path at dst */
	{
	&olddirfd, TEST_FILE1, &badfd, dpathname, 0,
	TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
	/* 16. relative paths to deleted */
	{
	&deldirfd, TEST_DIR1 "/" TEST_FILE1, &newdirfd, TEST_FILE1, 0,
	0, 0, ENOENT},
	/* 17. relative paths to deleted */
	{
	&olddirfd, TEST_FILE1, &deldirfd, TEST_DIR2 "/" TEST_FILE1, 0,
	0, 0, ENOENT},
	/* 18. abs path at source */
	{
	&deldirfd, spathname, &newdirfd, TEST_FILE1, 0, 0, 0, 0},
	/* 19. abs path at dst */
	{
	&olddirfd, TEST_FILE1, &deldirfd, dpathname, 0,
	TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
	/* 20. x-device link */
	{
	&cwd_fd, "/proc/cpuinfo", &newdirfd, TEST_FILE1, 0, 0, 0, EXDEV},
	/* 21. directory link */
	{
	&olddirfd, ".", &newdirfd, TEST_FILE1, 0, 0, 0, EPERM},
	/* 22. invalid flag */
	{
	&olddirfd, TEST_FILE1, &newdirfd, TEST_FILE1, 1, 0, 0, EINVAL},
	/* 23. fifo link */
	/* XXX (garrcoop): Removed because it hangs the overall test. Need to
	* find a legitimate means to exercise this functionality, if in fact
	* it's a valid testcase -- which it should be.
	*/
	/* { &olddirfd, TEST_FIFO, &newdirfd, TEST_FILE1, 0,
	TEST_DIR1"/"TEST_FIFO, TEST_DIR2"/"TEST_FILE1, 0 } */
	};

	char *TCID = "linkat01";
	int TST_TOTAL = sizeof(test_desc) / sizeof(*test_desc);

	#define SUCCEED_OR_DIE(syscall, message, ...) \
	(errno = 0, \
	({int ret=syscall(__VA_ARGS__); \
	if (ret==-1) \
	tst_brkm(TBROK \| TERRNO, cleanup, \
	message, __VA_ARGS__); \
	ret; }))

	static int mylinkat(int olddirfd, const char *oldfilename, int newdirfd,
	const char *newfilename, int flags)
	{
	return ltp_syscall(__NR_linkat, olddirfd, oldfilename, newdirfd,
	newfilename, flags);
	}

	int main(int ac, char **av)
	{
	int lc;
	char *msg;
	int i;

	if ((tst_kvercmp(2, 6, 16)) < 0) {
	tst_resm(TWARN, "This test can only run on kernels that are ");
	tst_resm(TWARN, "2.6.16 and higher");
	exit(0);
	}

	if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL)
	tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);

	setup();

	for (lc = 0; TEST_LOOPING(lc); lc++) {

	Tst_count = 0;

	for (i = 0; i < TST_TOTAL; i++) {
	setup_every_copy();
	mylinkat_test(&test_desc[i]);
	}

	}

	cleanup();
	tst_exit();
	}

	static void setup_every_copy()
	{
	close(newdirfd);
	rmobj(TEST_DIR2, NULL);

	SUCCEED_OR_DIE(mkdir, "mkdir(%s, %o) failed", TEST_DIR2, 0700);
	newdirfd = SUCCEED_OR_DIE(open, "open(%s, 0x%x) failed",
	TEST_DIR2, O_DIRECTORY);
	}

	static void mylinkat_test(struct test_struct *desc)
	{
	int fd;

	TEST(mylinkat
	(desc->oldfd, desc->oldfn, desc->newfd, desc->newfn,
	desc->flags));

	if (TEST_ERRNO == desc->expected_errno) {

	if (STD_FUNCTIONAL_TEST) {

	if (TEST_RETURN == 0 && desc->referencefn1 != NULL) {
	int tnum = rand(), vnum = ~tnum;
	fd = SAFE_OPEN(cleanup, desc->referencefn1,
	O_RDWR);
	SAFE_WRITE(cleanup, 1, fd, &tnum, sizeof(tnum));
	SAFE_CLOSE(cleanup, fd);

	fd = SAFE_OPEN(cleanup, desc->referencefn2,
	O_RDONLY);
	SAFE_READ(cleanup, 1, fd, &vnum, sizeof(vnum));
	SAFE_CLOSE(cleanup, fd);

	if (tnum == vnum)
	tst_resm(TPASS,
	"linkat is functionality correct");
	else {
	tst_resm(TFAIL,
	"The link file's content isn't "
	"as same as the original file's "
	"although linkat returned 0");
	}
	} else {
	if (TEST_RETURN == 0)
	tst_resm(TPASS,
	"linkat succeeded as expected");
	else
	tst_resm(TPASS \| TTERRNO,
	"linkat failed as expected");
	}
	} else
	tst_resm(TPASS, "Test passed");
	} else {
	if (TEST_RETURN == 0)
	tst_resm(TFAIL, "linkat succeeded unexpectedly");
	else
	tst_resm(TFAIL \| TTERRNO,
	"linkat failed unexpectedly; expected %d - %s",
	desc->expected_errno,
	strerror(desc->expected_errno));
	}
	}

	void setup()
	{
	char *cwd;

	tst_sig(NOFORK, DEF_HANDLER, cleanup);

	tst_tmpdir();

	cwd = get_current_dir_name();
	if (cwd == NULL)
	tst_brkm(TFAIL \| TERRNO, cleanup,
	"Failed to get current working directory");
	else {

	SUCCEED_OR_DIE(mkdir, "mkdir(%s, %o) failed", TEST_DIR1, 0700);
	SUCCEED_OR_DIE(mkdir, "mkdir(%s, %o) failed", TEST_DIR3, 0700);
	olddirfd = SUCCEED_OR_DIE(open, "open(%s, 0x%x) failed",
	TEST_DIR1, O_DIRECTORY);
	deldirfd = SUCCEED_OR_DIE(open, "open(%s, 0x%x) failed",
	TEST_DIR3, O_DIRECTORY);
	SUCCEED_OR_DIE(rmdir, "rmdir(%s) failed", TEST_DIR3);
	SUCCEED_OR_DIE(close, "close(%d) failed",
	SUCCEED_OR_DIE(open, "open(%s, 0x%x, %o) "
	"failed",
	TEST_DIR1 "/" TEST_FILE1,
	O_CREAT \| O_EXCL, 0600));

	SUCCEED_OR_DIE(mkfifo, "mkfifo(%s, %o) failed",
	TEST_DIR1 "/" TEST_FIFO, 0600);

	snprintf(dpathname, sizeof(dpathname), DPATHNAME_FMT, cwd);
	snprintf(spathname, sizeof(spathname), SPATHNAME_FMT, cwd);

	free(cwd);

	TEST_PAUSE;

	}

	}

	static void cleanup(void)
	{
	tst_rmdir();
	TEST_CLEANUP;
	}