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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	: capget02
     20  *
     21  *    EXECUTED BY	: anyone
     22  *
     23  *    TEST TITLE	: Tests for error conditions.
     24  *
     25  *    TEST CASE TOTAL	: 5
     26  *
     27  *    AUTHOR		: Saji Kumar.V.R <saji.kumar (at) wipro.com>
     28  *
     29  *    SIGNALS
     30  * 	Uses SIGUSR1 to pause before test if option set.
     31  * 	(See the parse_opts(3) man page).
     32  *
     33  *    DESCRIPTION
     34  *	Verify that
     35  *	1) capget() fails with errno set to EFAULT if an invalid address
     36  *	   is given for header
     37  *	2) capget() fails with errno set to EFAULT if an invalid address
     38  *	   is given for data
     39  *	3) capget() fails with errno set to EINVAL if an invalid value
     40  *	   is given for header->version
     41  *	4) capget() fails with errno set to EINVAL if header->pid < 0
     42  *	5) capget() fails with errno set to ESRCH if the process with
     43  *	   pid, header->pid does not exit
     44  *
     45  *
     46  * 	Setup:
     47  * 	  Setup signal handling.
     48  *	  Pause for SIGUSR1 if option specified.
     49  *
     50  * 	Test:
     51  *	 Loop if the proper options are given.
     52  * 	  call capget with proper arguments
     53  *	  if capget() fails with expected errno
     54  *		Test passed
     55  *	  Otherwise
     56  *		Test failed
     57  *
     58  * 	Cleanup:
     59  * 	  Print errno log and/or timing stats if options given
     60  *
     61  * USAGE:  <for command-line>
     62  * capget02 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-h] [-f] [-p]
     63  *			where,  -c n : Run n copies concurrently.
     64  *				-e   : Turn on errno logging.
     65  *				-h   : Show help screen
     66  *				-f   : Turn off functional testing
     67  *				-i n : Execute test n times.
     68  *				-I x : Execute test for x seconds.
     69  *				-p   : Pause for SIGUSR1 before starting
     70  *				-P x : Pause for x seconds between iterations.
     71  *				-t   : Turn on syscall timing.
     72  *
     73  ****************************************************************/
     74 
     75 #include <errno.h>
     76 #include "test.h"
     77 #include "linux_syscall_numbers.h"
     78 
     79 /**************************************************************************/
     80 /*                                                                        */
     81 /*   Some archs do not have the manpage documented sys/capability.h file, */
     82 /*   and require the use of the line below                                */
     83 
     84 #include <linux/capability.h>
     85 
     86 /*   If you are having issues with including this file and have the sys/  */
     87 /*   version, then you may want to try switching to it. -Robbie W.        */
     88 /**************************************************************************/
     89 
     90 static void setup();
     91 static void cleanup();
     92 static void test_setup(int);
     93 
     94 char *TCID = "capget02";
     95 
     96 static struct __user_cap_header_struct header;
     97 static struct __user_cap_data_struct data;
     98 
     99 struct test_case_t {
    100 	cap_user_header_t headerp;
    101 	cap_user_data_t datap;
    102 	int exp_errno;
    103 	char *errdesc;
    104 } test_cases[] = {
    105 #ifndef UCLINUX
    106 	/* Skip since uClinux does not implement memory protection */
    107 	{
    108 	(cap_user_header_t) - 1, &data, EFAULT, "EFAULT"}, {
    109 	&header, (cap_user_data_t) - 1, EFAULT, "EFAULT"},
    110 #endif
    111 	{
    112 	&header, &data, EINVAL, "EINVAL"}, {
    113 	&header, &data, EINVAL, "EINVAL"}, {
    114 	&header, &data, ESRCH, "ESRCH"}
    115 };
    116 
    117 int TST_TOTAL = sizeof(test_cases) / sizeof(test_cases[0]);
    118 
    119 int main(int ac, char **av)
    120 {
    121 
    122 	int lc, i;
    123 
    124 	tst_parse_opts(ac, av, NULL, NULL);
    125 
    126 	setup();
    127 
    128 	for (lc = 0; TEST_LOOPING(lc); lc++) {
    129 
    130 		tst_count = 0;
    131 
    132 		for (i = 0; i < TST_TOTAL; ++i) {
    133 			test_setup(i);
    134 			TEST(ltp_syscall(__NR_capget, test_cases[i].headerp,
    135 				     test_cases[i].datap));
    136 
    137 			if (TEST_RETURN == -1 &&
    138 			    TEST_ERRNO == test_cases[i].exp_errno) {
    139 				tst_resm(TPASS | TTERRNO,
    140 					 "capget failed as expected");
    141 			} else {
    142 				tst_resm(TFAIL | TTERRNO,
    143 					 "capget failed unexpectedly (%ld)",
    144 					 TEST_RETURN);
    145 			}
    146 		}
    147 	}
    148 
    149 	cleanup();
    150 
    151 	tst_exit();
    152 
    153 }
    154 
    155 /* setup() - performs all ONE TIME setup for this test */
    156 void setup(void)
    157 {
    158 
    159 	tst_sig(NOFORK, DEF_HANDLER, cleanup);
    160 
    161 	TEST_PAUSE;
    162 
    163 }
    164 
    165 /*
    166  *cleanup() -  performs all ONE TIME cleanup for this test at
    167  *		completion or premature exit.
    168  */
    169 void cleanup(void)
    170 {
    171 }
    172 
    173 void test_setup(int i)
    174 {
    175 #ifdef UCLINUX
    176 	i = i + 2;
    177 #endif
    178 	switch (i) {
    179 
    180 	case 0:
    181 		break;
    182 	case 1:
    183 		header.version = _LINUX_CAPABILITY_VERSION;
    184 		header.pid = getpid();
    185 		break;
    186 	case 2:
    187 		header.version = 0;
    188 		header.pid = getpid();
    189 		break;
    190 	case 3:
    191 		header.version = _LINUX_CAPABILITY_VERSION;
    192 		header.pid = -1;
    193 		break;
    194 	case 4:
    195 		header.version = _LINUX_CAPABILITY_VERSION;
    196 		header.pid = tst_get_unused_pid(cleanup);
    197 		break;
    198 	}
    199 }
    200