testcases/kernel/syscalls/fchmod/fchmod06.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: fchmod06
  *
  * Test Description:
  *   Verify that,
  *   1) fchmod(2) returns -1 and sets errno to EPERM if the effective user id
  *	of process does not match the owner of the file and the process is
  *	not super user.
  *   2) fchmod(2) returns -1 and sets errno to EBADF if the file descriptor
  *	of the specified file is not valid.
  *
  * Expected Result:
  *  fchmod() 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>
  *  fchmod06 [-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 executed by 'non-super-user' only.
  */

 #ifndef _GNU_SOURCE
 # define _GNU_SOURCE
 #endif

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

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

 #define MODE_RWX	S_IRWXU | S_IRWXG | S_IRWXO
 #define FILE_MODE	S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH
 #define TEST_FILE1	"tfile_1"
 #define TEST_FILE2	"tfile_2"

 int no_setup();
 int setup1();			/* setup function to test chmod for EPERM */
 int setup2();			/* setup function to test chmod for EBADF */

 int fd1;			/* File descriptor for testfile1 */
 int fd2;			/* File descriptor for testfile2 */

 struct test_case_t {		/* test case struct. to hold ref. test cond's*/
 	int fd;
 	char *desc;
 	int mode;
 	int exp_errno;
 	int (*setupfunc)();
 } Test_cases[] = {
 	{ 1, "Process is not owner/root", FILE_MODE, EPERM, setup1 },
 	{ 2, "File descriptor is not valid", FILE_MODE, EBADF, setup2 },
 	{ 0, 0, 0, 0, no_setup }
 };

 char *TCID="fchmod06";          /* Test program identifier.    */
 int TST_TOTAL = 2;		/* Total number of test cases. */
 extern int Tst_count;           /* Test Case counter for tst_* routines */
 int exp_enos[]={EPERM, EBADF, 0};

 char nobody_uid[] = "nobody";
 struct passwd *ltpuser;
 char *test_home;		/* variable to hold TESTHOME env. */


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

 int
 main(int ac, char **av)
 {
 	int lc;			/* loop counter */
 	char *msg;		/* message returned from parse_opts */
 	char *test_desc;	/* test specific error message */
 	int fd;			/* test file descriptor */
 	int ind;		/* counter to test different test conditions */
 	int mode;		/* creation mode for the node created */

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

 	/*
 	 * Invoke setup function to call individual test setup functions
 	 * to simulate test conditions.
 	 */
 	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++) {
 			fd = Test_cases[ind].fd;
 			mode = Test_cases[ind].mode;
 			test_desc = Test_cases[ind].desc;

 			if (fd == 1) {
 				fd = fd1;
 			} else {
 				fd = fd2;
 			}

 			/*
 			 * Call fchmod(2) to test different test conditions.
 			 * verify that it fails with -1 return value and
 			 * sets appropriate errno.
 			 */

 			TEST(fchmod(fd, mode));

 			/* Check return code from fchmod(2) */
 			if (TEST_RETURN == -1) {
 				TEST_ERROR_LOG(TEST_ERRNO);
 				if (TEST_ERRNO == Test_cases[ind].exp_errno) {
 					tst_resm(TPASS,
 						 "fchmod() fails, %s, errno:%d",
 						 test_desc, TEST_ERRNO);
 				} else {
 					tst_resm(TFAIL, "fchmod() fails, %s, "
 						 "errno:%d, expected errno:%d",
 						 test_desc, TEST_ERRNO,
 						 Test_cases[ind].exp_errno);
 				}
 			} else {
 				tst_resm(TFAIL, "fchmod() returned %d, expected"
 					" -1, errno:%d", TEST_RETURN,
 					 Test_cases[ind].exp_errno);
 			}
 		}	/* End of TEST CASE LOOPING. */

 	}	/* End for TEST_LOOPING */

 	/*
 	 * Invoke cleanup() to delete the test directory/file(s) created
 	 * in the setup().
 	 */
 	cleanup();

 	/*NOTREACHED*/
 	return 0;
 }	/* End main */

 /*
  * void
  * setup(void) - performs all ONE TIME setup for this test.
  * 	Exit the test program on receipt of unexpected signals.
  *	Create a temporary directory and change directory to it.
  *	Invoke individual test setup functions according to the order
  *	set in struct. definition.
  */
 void
 setup()
 {
 	int ind;			/* counter for setup functions */

 	/* Capture unexpected signals */
 	tst_sig(FORK, 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 (seteuid(ltpuser->pw_uid) == -1) {
                 tst_resm(TINFO, "seteuid failed to "
                          "to set the effective uid to %d",
                          ltpuser->pw_uid);
                 perror("seteuid");
          }

 	test_home = get_current_dir_name();

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

 	/* Make a temp dir and cd to it */
 	tst_tmpdir();

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

 /*
  * int
  * setup1() - setup function for a test condition for which fchmod(2)
  *	      returns -1 and sets errno to EPERM.
  *
  *  Create a test file under temporary directory.
  *  Get the current working directory of the process and invoke setuid
  *  to root program to change the ownership of testfile to that of
  *  "ltpuser" user.
  *
  */
 int
 setup1()
 {
 	char Path_name[PATH_MAX];       /* Buffer to hold command string */
 	char Cmd_buffer[BUFSIZ];        /* Buffer to hold command string */


 	/* Create a testfile under temporary directory */
 	if ((fd1 = open(TEST_FILE1, O_RDWR|O_CREAT, 0666)) == -1) {
 		tst_brkm(TBROK, cleanup,
 			 "open(%s, O_RDWR|O_CREAT, 0666) failed, errno=%d : %s",
 			 TEST_FILE1, errno, strerror(errno));
 	}

 	/* Get the current working directory of the process */
 	if (getcwd(Path_name, sizeof(Path_name)) == NULL) {
 		tst_brkm(TBROK, cleanup,
 			 "getcwd(3) fails to get working directory of process");
 	}

 	/* Get the path of test file created under temporary directory */
 	strcat(Path_name, "/"TEST_FILE1);

 	/* Get the command name to be executed as setuid to root */
 	strcpy((char *)Cmd_buffer, (const char *)test_home);
 	strcat((char *)Cmd_buffer, "/change_owner ");
 	strcat((char *)Cmd_buffer, TCID);
 	strcat((char *)Cmd_buffer, " ");
 	strcat((char *)Cmd_buffer, Path_name);

 	if (system((const char *)Cmd_buffer) != 0) {
 		tst_brkm(TBROK, cleanup,
 			 "Fail to modify %s ownership(s)!", TEST_FILE1);
 	}
 	return 0;
 }

 /*
  * int
  * setup2() - setup function for a test condition for which fchmod(2)
  *	      returns -1 and sets errno to EBADF.
  *  Create a testfile under temporary directory and close it such that
  *  fchmod(2) attempts to modify the file which is already closed.
  */
 int
 setup2()
 {
 	/* Create a testfile under temporary directory */
 	if ((fd2 = open(TEST_FILE2, O_RDWR|O_CREAT, 0666)) == -1) {
 		tst_brkm(TBROK, cleanup,
 			 "open(%s, O_RDWR|O_CREAT, 0666) failed, errno=%d : %s",
 			 TEST_FILE2, errno, strerror(errno));
 	}
 	/* Close the testfile created above */
 	if (close(fd2) == -1) {
 		tst_brkm(TBROK, cleanup,
 			 "close(%s) Failed, errno=%d : %s",
 			 TEST_FILE2, errno, strerror(errno));
 	}
 	return 0;
 }

 /*
  * int
  * no_setup() - Some test conditions for mknod(2) do not any setup.
  *              Hence, this function just returns 0.
  *  This function simply returns 0.
  */
 int
 no_setup()
 {
 	return 0;
 }

 /*
  * void
  * cleanup() - Performs all ONE TIME cleanup for this test at
  *             completion or premature exit.
  *	Print test timing stats and errno log if test executed with options.
  *	Close the testfile if still opened.
  *	Remove temporary directory and sub-directories/files under it
  *	created during setup().
  *	Exit the test program with normal exit code.
  */
 void
 cleanup()
 {
 	/*
 	 * print timing stats if that option was specified.
 	 * print errno log if that option was specified.
 	 */
 	TEST_CLEANUP;

 	if (close(fd1) == -1) {
 		tst_brkm(TBROK, NULL,
 		 	 "close(%s) Failed, errno=%d : %s",
 		 	 TEST_FILE1, errno, strerror(errno));
 	}

 	/* Remove files and temporary directory created */
 	tst_rmdir();

 	/* exit with return code appropriate for results */
 	tst_exit();
 }	/* End cleanup() */
	/*
	*
	* 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: fchmod06
	*
	* Test Description:
	* Verify that,
	* 1) fchmod(2) returns -1 and sets errno to EPERM if the effective user id
	* of process does not match the owner of the file and the process is
	* not super user.
	* 2) fchmod(2) returns -1 and sets errno to EBADF if the file descriptor
	* of the specified file is not valid.
	*
	* Expected Result:
	* fchmod() 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>
	* fchmod06 [-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 executed by 'non-super-user' only.
	*/

	#ifndef _GNU_SOURCE
	# define _GNU_SOURCE
	#endif

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

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

	#define MODE_RWX S_IRWXU \| S_IRWXG \| S_IRWXO
	#define FILE_MODE S_IRUSR \| S_IWUSR \| S_IRGRP \| S_IROTH
	#define TEST_FILE1 "tfile_1"
	#define TEST_FILE2 "tfile_2"

	int no_setup();
	int setup1(); /* setup function to test chmod for EPERM */
	int setup2(); /* setup function to test chmod for EBADF */

	int fd1; /* File descriptor for testfile1 */
	int fd2; /* File descriptor for testfile2 */

	struct test_case_t { /* test case struct. to hold ref. test cond's*/
	int fd;
	char *desc;
	int mode;
	int exp_errno;
	int (*setupfunc)();
	} Test_cases[] = {
	{ 1, "Process is not owner/root", FILE_MODE, EPERM, setup1 },
	{ 2, "File descriptor is not valid", FILE_MODE, EBADF, setup2 },
	{ 0, 0, 0, 0, no_setup }
	};

	char TCID="fchmod06"; / Test program identifier. */
	int TST_TOTAL = 2; /* Total number of test cases. */
	extern int Tst_count; /* Test Case counter for tst_* routines */
	int exp_enos[]={EPERM, EBADF, 0};

	char nobody_uid[] = "nobody";
	struct passwd *ltpuser;
	char test_home; / variable to hold TESTHOME env. */



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

	int
	main(int ac, char **av)
	{
	int lc; /* loop counter */
	char msg; / message returned from parse_opts */
	char test_desc; / test specific error message */
	int fd; /* test file descriptor */
	int ind; /* counter to test different test conditions */
	int mode; /* creation mode for the node created */

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

	/*
	* Invoke setup function to call individual test setup functions
	* to simulate test conditions.
	*/
	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++) {
	fd = Test_cases[ind].fd;
	mode = Test_cases[ind].mode;
	test_desc = Test_cases[ind].desc;

	if (fd == 1) {
	fd = fd1;
	} else {
	fd = fd2;
	}

	/*
	* Call fchmod(2) to test different test conditions.
	* verify that it fails with -1 return value and
	* sets appropriate errno.
	*/

	TEST(fchmod(fd, mode));

	/* Check return code from fchmod(2) */
	if (TEST_RETURN == -1) {
	TEST_ERROR_LOG(TEST_ERRNO);
	if (TEST_ERRNO == Test_cases[ind].exp_errno) {
	tst_resm(TPASS,
	"fchmod() fails, %s, errno:%d",
	test_desc, TEST_ERRNO);
	} else {
	tst_resm(TFAIL, "fchmod() fails, %s, "
	"errno:%d, expected errno:%d",
	test_desc, TEST_ERRNO,
	Test_cases[ind].exp_errno);
	}
	} else {
	tst_resm(TFAIL, "fchmod() returned %d, expected"
	" -1, errno:%d", TEST_RETURN,
	Test_cases[ind].exp_errno);
	}
	} /* End of TEST CASE LOOPING. */

	} /* End for TEST_LOOPING */

	/*
	* Invoke cleanup() to delete the test directory/file(s) created
	* in the setup().
	*/
	cleanup();

	/NOTREACHED/
	return 0;
	} /* End main */

	/*
	* void
	* setup(void) - performs all ONE TIME setup for this test.
	* Exit the test program on receipt of unexpected signals.
	* Create a temporary directory and change directory to it.
	* Invoke individual test setup functions according to the order
	* set in struct. definition.
	*/
	void
	setup()
	{
	int ind; /* counter for setup functions */

	/* Capture unexpected signals */
	tst_sig(FORK, 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 (seteuid(ltpuser->pw_uid) == -1) {
	tst_resm(TINFO, "seteuid failed to "
	"to set the effective uid to %d",
	ltpuser->pw_uid);
	perror("seteuid");
	}

	test_home = get_current_dir_name();

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

	/* Make a temp dir and cd to it */
	tst_tmpdir();

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

	/*
	* int
	* setup1() - setup function for a test condition for which fchmod(2)
	* returns -1 and sets errno to EPERM.
	*
	* Create a test file under temporary directory.
	* Get the current working directory of the process and invoke setuid
	* to root program to change the ownership of testfile to that of
	* "ltpuser" user.
	*
	*/
	int
	setup1()
	{
	char Path_name[PATH_MAX]; /* Buffer to hold command string */
	char Cmd_buffer[BUFSIZ]; /* Buffer to hold command string */


	/* Create a testfile under temporary directory */
	if ((fd1 = open(TEST_FILE1, O_RDWR\|O_CREAT, 0666)) == -1) {
	tst_brkm(TBROK, cleanup,
	"open(%s, O_RDWR\|O_CREAT, 0666) failed, errno=%d : %s",
	TEST_FILE1, errno, strerror(errno));
	}

	/* Get the current working directory of the process */
	if (getcwd(Path_name, sizeof(Path_name)) == NULL) {
	tst_brkm(TBROK, cleanup,
	"getcwd(3) fails to get working directory of process");
	}

	/* Get the path of test file created under temporary directory */
	strcat(Path_name, "/"TEST_FILE1);

	/* Get the command name to be executed as setuid to root */
	strcpy((char )Cmd_buffer, (const char )test_home);
	strcat((char *)Cmd_buffer, "/change_owner ");
	strcat((char *)Cmd_buffer, TCID);
	strcat((char *)Cmd_buffer, " ");
	strcat((char *)Cmd_buffer, Path_name);

	if (system((const char *)Cmd_buffer) != 0) {
	tst_brkm(TBROK, cleanup,
	"Fail to modify %s ownership(s)!", TEST_FILE1);
	}
	return 0;
	}

	/*
	* int
	* setup2() - setup function for a test condition for which fchmod(2)
	* returns -1 and sets errno to EBADF.
	* Create a testfile under temporary directory and close it such that
	* fchmod(2) attempts to modify the file which is already closed.
	*/
	int
	setup2()
	{
	/* Create a testfile under temporary directory */
	if ((fd2 = open(TEST_FILE2, O_RDWR\|O_CREAT, 0666)) == -1) {
	tst_brkm(TBROK, cleanup,
	"open(%s, O_RDWR\|O_CREAT, 0666) failed, errno=%d : %s",
	TEST_FILE2, errno, strerror(errno));
	}
	/* Close the testfile created above */
	if (close(fd2) == -1) {
	tst_brkm(TBROK, cleanup,
	"close(%s) Failed, errno=%d : %s",
	TEST_FILE2, errno, strerror(errno));
	}
	return 0;
	}

	/*
	* int
	* no_setup() - Some test conditions for mknod(2) do not any setup.
	* Hence, this function just returns 0.
	* This function simply returns 0.
	*/
	int
	no_setup()
	{
	return 0;
	}

	/*
	* void
	* cleanup() - Performs all ONE TIME cleanup for this test at
	* completion or premature exit.
	* Print test timing stats and errno log if test executed with options.
	* Close the testfile if still opened.
	* Remove temporary directory and sub-directories/files under it
	* created during setup().
	* Exit the test program with normal exit code.
	*/
	void
	cleanup()
	{
	/*
	* print timing stats if that option was specified.
	* print errno log if that option was specified.
	*/
	TEST_CLEANUP;

	if (close(fd1) == -1) {
	tst_brkm(TBROK, NULL,
	"close(%s) Failed, errno=%d : %s",
	TEST_FILE1, errno, strerror(errno));
	}

	/* Remove files and temporary directory created */
	tst_rmdir();

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