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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	: capset01
     20  *
     21  *    EXECUTED BY	: anyone
     22  *
     23  *    TEST TITLE	: Basic test for capset(2)
     24  *
     25  *    TEST CASE TOTAL	: 1
     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  *	This is a Phase I test for the capset(2) system call.
     35  *	It is intended to provide a limited exposure of the system call.
     36  *
     37  * 	Setup:
     38  * 	  Setup signal handling.
     39  *	  Pause for SIGUSR1 if option specified.
     40  *	  call capget() to save the current capability data
     41  *
     42  * 	Test:
     43  *	 Loop if the proper options are given.
     44  * 	  call capset() with the saved data
     45  *	  if return value == 0
     46  *		Test passed
     47  *	  Otherwise
     48  *		Test failed
     49  *
     50  * 	Cleanup:
     51  * 	  Print errno log and/or timing stats if options given
     52  *
     53  * USAGE:  <for command-line>
     54  * capset01 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-h] [-f] [-p]
     55  *			where,  -c n : Run n copies concurrently.
     56  *				-e   : Turn on errno logging.
     57  *				-h   : Show help screen
     58  *				-f   : Turn off functional testing
     59  *				-i n : Execute test n times.
     60  *				-I x : Execute test for x seconds.
     61  *				-p   : Pause for SIGUSR1 before starting
     62  *				-P x : Pause for x seconds between iterations.
     63  *				-t   : Turn on syscall timing.
     64  *
     65  * CHANGES:
     66  *  2005/01/01: add an hint to a possible solution when test fails
     67  *              - Ricky Ng-Adam <rngadam (at) yahoo.com>
     68  ****************************************************************/
     69 #include <unistd.h>
     70 #include <errno.h>
     71 #include "test.h"
     72 #include "linux_syscall_numbers.h"
     73 
     74 /**************************************************************************/
     75 /*                                                                        */
     76 /*   Some archs do not have the manpage documented sys/capability.h file, */
     77 /*   and require the use of the line below                                */
     78 
     79 #include <linux/capability.h>
     80 
     81 /*   If you are having issues with including this file and have the sys/  */
     82 /*   version, then you may want to try switching to it. -Robbie W.        */
     83 /**************************************************************************/
     84 
     85 static void setup();
     86 static void cleanup();
     87 
     88 char *TCID = "capset01";
     89 int TST_TOTAL = 1;
     90 
     91 static struct __user_cap_header_struct header;	/* cap_user_header_t is a pointer
     92 						   to __user_cap_header_struct */
     93 
     94 static struct __user_cap_data_struct data;	/* cap_user_data_t is a pointer to
     95 						   __user_cap_data_struct */
     96 
     97 int main(int ac, char **av)
     98 {
     99 
    100 	int lc;
    101 
    102 	tst_parse_opts(ac, av, NULL, NULL);
    103 
    104 	setup();
    105 
    106 	for (lc = 0; TEST_LOOPING(lc); lc++) {
    107 
    108 		tst_count = 0;
    109 
    110 		TEST(ltp_syscall(__NR_capset, &header, &data));
    111 
    112 		if (TEST_RETURN == 0) {
    113 			tst_resm(TPASS, "capset() returned %ld", TEST_RETURN);
    114 		} else {
    115 			tst_resm(TFAIL | TTERRNO,
    116 				 "Test Failed, capset() returned %ld"
    117 				 " Maybe you need to do `modprobe capability`?",
    118 				 TEST_RETURN);
    119 		}
    120 	}
    121 
    122 	cleanup();
    123 
    124 	tst_exit();
    125 }
    126 
    127 void setup(void)
    128 {
    129 
    130 	tst_sig(NOFORK, DEF_HANDLER, cleanup);
    131 
    132 	TEST_PAUSE;
    133 
    134 	header.version = _LINUX_CAPABILITY_VERSION;
    135 	header.pid = 0;
    136 	if (ltp_syscall(__NR_capget, &header, &data) == -1)
    137 		tst_brkm(TBROK | TERRNO, NULL, "capget() failed");
    138 }
    139 
    140 void cleanup(void)
    141 {
    142 }
    143