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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	: sysfs(2)
     20  *
     21  *
     22  *    EXECUTED BY	: anyone
     23  *
     24  *    TEST TITLE	: Test checking for basic error conditions
     25  *				 for sysfs(2)
     26  *
     27  *    TEST CASE TOTAL	: 3
     28  *
     29  *    AUTHOR		: Aniruddha Marathe <aniruddha.marathe (at) wipro.com>
     30  *
     31  *    SIGNALS
     32  *	Uses SIGUSR1 to pause before test if option set.
     33  *	(See the parse_opts(3) man page).
     34  *
     35  *    DESCRIPTION
     36  *	This test case checks whether sysfs(2) system call returns
     37  *	appropriate error number for invalid
     38  *	option and for invalid filesystem index and when
     39  *	buffer is out of address space
     40  *
     41  *	Setup:
     42  *	  Setup signal handling.
     43  *	  Pause for SIGUSR1 if option specified.
     44  *
     45  *	Test:
     46  *	  Loop if the proper options are given.
     47  *	  Execute system call with invaid option parameter and for
     48  *	  invalid filesystem index
     49  *	  Check return code, if system call fails with errno == expected errno
     50  *		Issue syscall passed with expected errno
     51  *	  Otherwise,
     52  *	  Issue syscall failed to produce expected errno
     53  *
     54  *	Cleanup:
     55  *	  Do cleanup for the test.
     56  *
     57  * USAGE:  <for command-line>
     58  *  sysfs06 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-h] [-f] [-p]
     59  *  where:
     60  *	-c n : Run n copies simultaneously
     61  *	-e   : Turn on errno logging.
     62  *	-i n : Execute test n times.
     63  *	-I x : Execute test for x seconds.
     64  *	-p   : Pause for SIGUSR1 before starting
     65  *	-P x : Pause for x seconds between iterations.
     66  *	-t   : Turn on syscall timing.
     67  *
     68  *RESTRICTIONS:
     69  *There is no libc or glibc support
     70  *****************************************************************************/
     71 
     72 #include <errno.h>
     73 #include <sys/syscall.h>
     74 #include <sys/mman.h>
     75 #include "test.h"
     76 #include "lapi/syscalls.h"
     77 
     78 static void setup();
     79 static void cleanup();
     80 
     81 char *TCID = "sysfs06";
     82 static int option[3] = { 2, 4, 2 };	/* valid and invalid option */
     83 static int fsindex[3] = { 10000, 0, 1 };	/*invalid and valid fsindex */
     84 
     85 static struct test_case_t {
     86 	char *err_desc;		/*error description */
     87 	int exp_errno;		/* expected error number */
     88 	char *exp_errval;	/*Expected errorvalue string */
     89 } testcase[] = {
     90 	{
     91 	"Invalid option", EINVAL, "EINVAL"}, {
     92 	"fs_index is out of bounds", EINVAL, "EINVAL"}, {
     93 	"buf is outside your accessible address space", EFAULT, "EFAULT"}
     94 };
     95 
     96 int TST_TOTAL = ARRAY_SIZE(testcase);
     97 
     98 char *bad_addr = 0;
     99 
    100 int main(int ac, char **av)
    101 {
    102 	int lc, i;
    103 
    104 	tst_parse_opts(ac, av, NULL, NULL);
    105 
    106 	setup();
    107 
    108 	for (lc = 0; TEST_LOOPING(lc); lc++) {
    109 
    110 		for (i = 0; i < TST_TOTAL; i++) {
    111 
    112 			tst_count = 0;
    113 			TEST(ltp_syscall
    114 			     (__NR_sysfs, option[i], fsindex[i], bad_addr));
    115 
    116 			/* check return code */
    117 			if ((TEST_RETURN == -1)
    118 			    && (TEST_ERRNO == testcase[i].exp_errno)) {
    119 				tst_resm(TPASS,
    120 					 "sysfs(2) expected failure;"
    121 					 " Got errno - %s : %s",
    122 					 testcase[i].exp_errval,
    123 					 testcase[i].err_desc);
    124 			} else {
    125 				tst_resm(TFAIL, "sysfs(2) failed to produce"
    126 					 " expected error; %d, errno"
    127 					 ": %s and got %d",
    128 					 testcase[i].exp_errno,
    129 					 testcase[i].exp_errval, TEST_ERRNO);
    130 			}
    131 		}		/*End of TEST LOOPS */
    132 	}
    133 
    134 	/*Clean up and exit */
    135 	cleanup();
    136 
    137 	tst_exit();
    138 }				/*End of main */
    139 
    140 /* setup() - performs all ONE TIME setup for this test */
    141 void setup(void)
    142 {
    143 
    144 	tst_sig(NOFORK, DEF_HANDLER, cleanup);
    145 
    146 	TEST_PAUSE;
    147 
    148 	bad_addr =
    149 	    mmap(0, 1, PROT_NONE, MAP_PRIVATE_EXCEPT_UCLINUX | MAP_ANONYMOUS, 0,
    150 		 0);
    151 	if (bad_addr == MAP_FAILED)
    152 		tst_brkm(TBROK, cleanup, "mmap failed");
    153 }
    154 
    155 /*
    156 * cleanup() - Performs one time cleanup for this test at
    157 * completion or premature exit
    158 */
    159 void cleanup(void)
    160 {
    161 
    162 }
    163