testcases/kernel/syscalls/access/access05.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: access05
  *
  * Test Description:
  *  Verify that,
  *   1. access() fails with -1 return value and sets errno to EACCES
  *      if the permission bits of the file mode do not permit the
  *	 requested (Read/Write/Execute) access.
  *   2. access() fails with -1 return value and sets errno to EINVAL
  *	if the specified access mode argument is invalid.
  *   3. access() fails with -1 return value and sets errno to EFAULT
  *	if the pathname points outside allocate address space for the
  *	process.
  *   4. access() fails with -1 return value and sets errno to ENOENT
  *	if the specified file doesn't exist (or pathname is NULL).
  *   5. access() fails with -1 return value and sets errno to ENAMETOOLONG
  *      if the pathname size is > PATH_MAX characters.
  *
  * Expected Result:
  *  access() 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>
  *  access05 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
  *     where,  -c n : Run n copies concurrently.
  *             -e   : Turn on errno logging.
  *	       -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 Ported by Wayne Boyer
  *
  * RESTRICTIONS:
  *  This test should be run by 'non-super-user' only.
  *
  */

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

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

 #define INV_OK		-1
 #define TEST_FILE1	"test_file1"
 #define TEST_FILE2	"test_file2"
 #define TEST_FILE3	"test_file3"
 #define TEST_FILE4	"test_file4"

 #define FILE_MODE	S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH

 int no_setup();
 int setup1();			/* setup() to test access() for EACCES */
 int setup2();			/* setup() to test access() for EACCES */
 int setup3();			/* setup() to test access() for EACCES */
 int setup4();			/* setup() to test access() for EINVAL */
 int longpath_setup();		/* setup function to test access() for ENAMETOOLONG */

 #if !defined(UCLINUX)
 char *get_high_address();	/* function from ltp-lib        */
 char High_address_node[64];
 #endif

 char Longpathname[PATH_MAX + 2];

 struct test_case_t {		/* test case structure */
 	char *pathname;
 	int a_mode;
 	char *desc;
 	int exp_errno;
 	int (*setupfunc) ();
 } Test_cases[] = {
 	{
 	TEST_FILE1, R_OK, "Read Access denied on file", EACCES, setup1}, {
 	TEST_FILE2, W_OK, "Write Access denied on file", EACCES, setup2}, {
 	TEST_FILE3, X_OK, "Execute Access denied on file", EACCES, setup3},
 	{
 	TEST_FILE4, INV_OK, "Access mode invalid", EINVAL, setup4},
 #if !defined(UCLINUX)
 	{
 	(char *)-1, R_OK, "Negative address", EFAULT, no_setup}, {
 	High_address_node, R_OK, "Address beyond address space", EFAULT,
 		    no_setup},
 #endif
 	{
 	"", W_OK, "Pathname is empty", ENOENT, no_setup}, {
 	Longpathname, R_OK, "Pathname too long", ENAMETOOLONG, longpath_setup},
 	{
 	NULL, 0, NULL, 0, no_setup}
 };

 char *TCID = "access05";	/* Test program identifier.    */
 int TST_TOTAL = 8;		/* Total number of test cases. */
 extern int Tst_count;		/* Test Case counter for tst_* routines */
 int exp_enos[] = { EACCES, EFAULT, EINVAL, ENOENT, ENAMETOOLONG, 0 };

 char nobody_uid[] = "nobody";
 struct passwd *ltpuser;

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

 char *bad_addr = 0;

 int main(int ac, char **av)
 {
 	int lc;			/* loop counter */
 	char *msg;		/* message returned from parse_opts */
 	char *file_name;	/* name of the testfile */
 	char *test_desc;	/* test specific message */
 	int access_mode;	/* specified access mode for testfile */
 	int ind;		/* counter for testcase looping */

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

 	/* Perform global setup for test */
 	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;
 			access_mode = Test_cases[ind].a_mode;
 			test_desc = Test_cases[ind].desc;

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

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

 			if (TEST_RETURN != -1) {
 				tst_resm(TFAIL, "access() returned %ld, "
 					 "expected -1, errno:%d", TEST_RETURN,
 					 Test_cases[ind].exp_errno);
 				continue;
 			}

 			TEST_ERROR_LOG(TEST_ERRNO);

 			/*
 			 * Call a function to verify whether
 			 * the specified file has specified
 			 * access mode.
 			 */
 			if (TEST_ERRNO == Test_cases[ind].exp_errno) {
 				tst_resm(TPASS|TTERRNO, "access() fails, %s",
 					 test_desc);
 			} else {
 				tst_resm(TFAIL|TTERRNO, "access() fails %s (expected errno %d)",
 					 test_desc, Test_cases[ind].exp_errno);
 			}
 		}		/* Test Case Looping */
 	}			/* End for TEST_LOOPING */

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

 	return 0;
  /*NOTREACHED*/}

 /*
  * setup() - performs all ONE TIME setup for this test.
  *
  *  Create a temporary directory and change directory to it.
  *  Call individual test specific setup functions.
  */
 void setup()
 {
 	int ind;		/* counter for testsetup functions */

 	/* capture signals */
 	tst_sig(NOFORK, 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|TERRNO, "setuid(%d) failed", ltpuser->pw_uid);

 	/* Pause if that option was specified */
 	TEST_PAUSE;

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

 #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|TERRNO, cleanup, "mmap failed");
 	}
 	Test_cases[5].pathname = bad_addr;
 #endif

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

 /*
  * no_setup() - some test conditions do not need any setup.
  *		Hence, this function simply returns 0.
  */
 int no_setup()
 {
 	return 0;
 }

 int setup_file(const char *file, mode_t perms)
 {
 	int fd;		/* file handle for testfile */

 	/* Creat a test file under above directory created */
 	fd = open(file, O_RDWR | O_CREAT, FILE_MODE);
 	if (fd == -1)
 		tst_brkm(TBROK|TERRNO, cleanup,
 			 "open(%s, O_RDWR|O_CREAT, %#o) failed",
 			 file, FILE_MODE);

 	/* Close the testfile created above */
 	if (close(fd) == -1)
 		tst_brkm(TBROK|TERRNO, cleanup, "close(%s) failed", file);

 	/* Change mode permissions on testfile */
 	if (chmod(file, perms) < 0)
 		tst_brkm(TBROK|TERRNO, cleanup, "chmod(%s, %#o) failed",
 			 file, perms);

 	return 0;
 }

 /*
  * setup1() - Setup function to test access() for return value -1
  *	      and errno EACCES when read access denied for specified
  *	      testfile.
  *
  *   Creat/open a testfile and close it.
  *   Deny read access permissions on testfile.
  *   This function returns 0.
  */
 int setup1()
 {
 	return setup_file(TEST_FILE1, 0333);
 }

 /*
  * setup2() - Setup function to test access() for return value -1 and
  *	      errno EACCES when write access denied on testfile.
  *
  *   Creat/open a testfile and close it.
  *   Deny write access permissions on testfile.
  *   This function returns 0.
  */
 int setup2()
 {
 	return setup_file(TEST_FILE2, 0555);
 }

 /*
  * setup3() - Setup function to test access() for return value -1 and
  *	      errno EACCES when execute access denied on testfile.
  *
  *   Creat/open a testfile and close it.
  *   Deny search access permissions on testfile.
  *   This function returns 0.
  */
 int setup3()
 {
 	return setup_file(TEST_FILE3, 0666);
 }

 /*
  * setup4() - Setup function to test access() for return value -1
  *	      and errno EINVAL when specified access mode argument is
  *	      invalid.
  *
  *   Creat/open a testfile and close it.
  *   This function returns 0.
  */
 int setup4()
 {
 	return setup_file(TEST_FILE4, FILE_MODE);
 }

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

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

 	return 0;
 }

 /*
  * 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.
 	 * print errno log if that option was specified.
 	 */
 	TEST_CLEANUP;

 	/*
 	 * Delete the test directory/file and temporary directory
 	 * created in the setup.
 	 */
 	tst_rmdir();

 	/* exit with return code appropriate for results */
 	tst_exit();
 }
	/*
	*
	* 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: access05
	*
	* Test Description:
	* Verify that,
	* 1. access() fails with -1 return value and sets errno to EACCES
	* if the permission bits of the file mode do not permit the
	* requested (Read/Write/Execute) access.
	* 2. access() fails with -1 return value and sets errno to EINVAL
	* if the specified access mode argument is invalid.
	* 3. access() fails with -1 return value and sets errno to EFAULT
	* if the pathname points outside allocate address space for the
	* process.
	* 4. access() fails with -1 return value and sets errno to ENOENT
	* if the specified file doesn't exist (or pathname is NULL).
	* 5. access() fails with -1 return value and sets errno to ENAMETOOLONG
	* if the pathname size is > PATH_MAX characters.
	*
	* Expected Result:
	* access() 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>
	* access05 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
	* where, -c n : Run n copies concurrently.
	* -e : Turn on errno logging.
	* -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 Ported by Wayne Boyer
	*
	* RESTRICTIONS:
	* This test should be run by 'non-super-user' only.
	*
	*/

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

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

	#define INV_OK -1
	#define TEST_FILE1 "test_file1"
	#define TEST_FILE2 "test_file2"
	#define TEST_FILE3 "test_file3"
	#define TEST_FILE4 "test_file4"

	#define FILE_MODE S_IRUSR \| S_IWUSR \| S_IRGRP \| S_IROTH

	int no_setup();
	int setup1(); /* setup() to test access() for EACCES */
	int setup2(); /* setup() to test access() for EACCES */
	int setup3(); /* setup() to test access() for EACCES */
	int setup4(); /* setup() to test access() for EINVAL */
	int longpath_setup(); /* setup function to test access() for ENAMETOOLONG */

	#if !defined(UCLINUX)
	char get_high_address(); / function from ltp-lib */
	char High_address_node[64];
	#endif

	char Longpathname[PATH_MAX + 2];

	struct test_case_t { /* test case structure */
	char *pathname;
	int a_mode;
	char *desc;
	int exp_errno;
	int (*setupfunc) ();
	} Test_cases[] = {
	{
	TEST_FILE1, R_OK, "Read Access denied on file", EACCES, setup1}, {
	TEST_FILE2, W_OK, "Write Access denied on file", EACCES, setup2}, {
	TEST_FILE3, X_OK, "Execute Access denied on file", EACCES, setup3},
	{
	TEST_FILE4, INV_OK, "Access mode invalid", EINVAL, setup4},
	#if !defined(UCLINUX)
	{
	(char *)-1, R_OK, "Negative address", EFAULT, no_setup}, {
	High_address_node, R_OK, "Address beyond address space", EFAULT,
	no_setup},
	#endif
	{
	"", W_OK, "Pathname is empty", ENOENT, no_setup}, {
	Longpathname, R_OK, "Pathname too long", ENAMETOOLONG, longpath_setup},
	{
	NULL, 0, NULL, 0, no_setup}
	};

	char TCID = "access05"; / Test program identifier. */
	int TST_TOTAL = 8; /* Total number of test cases. */
	extern int Tst_count; /* Test Case counter for tst_* routines */
	int exp_enos[] = { EACCES, EFAULT, EINVAL, ENOENT, ENAMETOOLONG, 0 };

	char nobody_uid[] = "nobody";
	struct passwd *ltpuser;

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

	char *bad_addr = 0;

	int main(int ac, char **av)
	{
	int lc; /* loop counter */
	char msg; / message returned from parse_opts */
	char file_name; / name of the testfile */
	char test_desc; / test specific message */
	int access_mode; /* specified access mode for testfile */
	int ind; /* counter for testcase looping */

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

	/* Perform global setup for test */
	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;
	access_mode = Test_cases[ind].a_mode;
	test_desc = Test_cases[ind].desc;

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

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

	if (TEST_RETURN != -1) {
	tst_resm(TFAIL, "access() returned %ld, "
	"expected -1, errno:%d", TEST_RETURN,
	Test_cases[ind].exp_errno);
	continue;
	}

	TEST_ERROR_LOG(TEST_ERRNO);

	/*
	* Call a function to verify whether
	* the specified file has specified
	* access mode.
	*/
	if (TEST_ERRNO == Test_cases[ind].exp_errno) {
	tst_resm(TPASS\|TTERRNO, "access() fails, %s",
	test_desc);
	} else {
	tst_resm(TFAIL\|TTERRNO, "access() fails %s (expected errno %d)",
	test_desc, Test_cases[ind].exp_errno);
	}
	} /* Test Case Looping */
	} /* End for TEST_LOOPING */

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

	return 0;
	/NOTREACHED/}

	/*
	* setup() - performs all ONE TIME setup for this test.
	*
	* Create a temporary directory and change directory to it.
	* Call individual test specific setup functions.
	*/
	void setup()
	{
	int ind; /* counter for testsetup functions */

	/* capture signals */
	tst_sig(NOFORK, 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\|TERRNO, "setuid(%d) failed", ltpuser->pw_uid);

	/* Pause if that option was specified */
	TEST_PAUSE;

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

	#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\|TERRNO, cleanup, "mmap failed");
	}
	Test_cases[5].pathname = bad_addr;
	#endif

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

	/*
	* no_setup() - some test conditions do not need any setup.
	* Hence, this function simply returns 0.
	*/
	int no_setup()
	{
	return 0;
	}

	int setup_file(const char *file, mode_t perms)
	{
	int fd; /* file handle for testfile */

	/* Creat a test file under above directory created */
	fd = open(file, O_RDWR \| O_CREAT, FILE_MODE);
	if (fd == -1)
	tst_brkm(TBROK\|TERRNO, cleanup,
	"open(%s, O_RDWR\|O_CREAT, %#o) failed",
	file, FILE_MODE);

	/* Close the testfile created above */
	if (close(fd) == -1)
	tst_brkm(TBROK\|TERRNO, cleanup, "close(%s) failed", file);

	/* Change mode permissions on testfile */
	if (chmod(file, perms) < 0)
	tst_brkm(TBROK\|TERRNO, cleanup, "chmod(%s, %#o) failed",
	file, perms);

	return 0;
	}

	/*
	* setup1() - Setup function to test access() for return value -1
	* and errno EACCES when read access denied for specified
	* testfile.
	*
	* Creat/open a testfile and close it.
	* Deny read access permissions on testfile.
	* This function returns 0.
	*/
	int setup1()
	{
	return setup_file(TEST_FILE1, 0333);
	}

	/*
	* setup2() - Setup function to test access() for return value -1 and
	* errno EACCES when write access denied on testfile.
	*
	* Creat/open a testfile and close it.
	* Deny write access permissions on testfile.
	* This function returns 0.
	*/
	int setup2()
	{
	return setup_file(TEST_FILE2, 0555);
	}

	/*
	* setup3() - Setup function to test access() for return value -1 and
	* errno EACCES when execute access denied on testfile.
	*
	* Creat/open a testfile and close it.
	* Deny search access permissions on testfile.
	* This function returns 0.
	*/
	int setup3()
	{
	return setup_file(TEST_FILE3, 0666);
	}

	/*
	* setup4() - Setup function to test access() for return value -1
	* and errno EINVAL when specified access mode argument is
	* invalid.
	*
	* Creat/open a testfile and close it.
	* This function returns 0.
	*/
	int setup4()
	{
	return setup_file(TEST_FILE4, FILE_MODE);
	}

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

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

	return 0;
	}

	/*
	* 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.
	* print errno log if that option was specified.
	*/
	TEST_CLEANUP;

	/*
	* Delete the test directory/file and temporary directory
	* created in the setup.
	*/
	tst_rmdir();

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