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 : iopl01 20 * 21 * EXECUTED BY : superuser 22 * 23 * TEST TITLE : Basic test for iopl(2) 24 * 25 * TEST CASE TOTAL : 4 26 * 27 * AUTHOR : Subhab Biswas <subhabrata.biswas@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 iopl(2) system call. 35 * It is intended to provide a limited exposure of the system call. 36 * 37 * Setup: 38 * Setup signal handling. 39 * Test caller is superuser 40 * Pause for SIGUSR1 if option specified. 41 * 42 * Test: 43 * Loop if the proper options are given. 44 * Execute system call 45 * Check return code, if system call failed (return=-1) 46 * Issue FAIL message with errno. 47 * Otherwise, Issue PASS message. 48 * 49 * Cleanup: 50 * Print errno log and/or timing stats if options given 51 * 52 * USAGE: <for command-line> 53 * iopl01 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-h] [-f] [-p] 54 * where, -c n : Run n copies concurrently. 55 * -e : Turn on errno logging. 56 * -h : Show help screen 57 * -f : Turn off functional testing 58 * -i n : Execute test n times. 59 * -I x : Execute test for x seconds. 60 * -p : Pause for SIGUSR1 before starting 61 * -P x : Pause for x seconds between iterations. 62 * -t : Turn on syscall timing. 63 * 64 ****************************************************************/ 65 66 char *TCID = "iopl01"; 67 68 #if defined __i386__ || defined(__x86_64__) 69 70 #include <errno.h> 71 #include <unistd.h> 72 #include <sys/io.h> 73 74 #include "test.h" 75 76 static void setup(); 77 static void cleanup(); 78 79 int TST_TOTAL = 4; 80 81 int level; /* I/O privilege level of the process */ 82 83 int main(int ac, char **av) 84 { 85 86 int lc; 87 88 tst_parse_opts(ac, av, NULL, NULL); 89 90 setup(); 91 92 for (lc = 0; TEST_LOOPING(lc); lc++) { 93 94 tst_count = 0; 95 96 /* 97 * Test the system call for possible privelege levels. 98 * As the privelge level for a normal process is 0, 99 * start by setting/changing the level to 0. 100 */ 101 for (level = 0; level < TST_TOTAL; ++level) { 102 103 TEST(iopl(level)); 104 105 if (TEST_RETURN == -1) { 106 tst_resm(TFAIL, "iopl() failed for level %d, " 107 "errno=%d : %s", level, 108 TEST_ERRNO, strerror(TEST_ERRNO)); 109 } else { 110 tst_resm(TPASS, "iopl() passed for level %d, " 111 "returned %ld", level, TEST_RETURN); 112 } 113 } 114 } 115 116 /* cleanup and exit */ 117 cleanup(); 118 tst_exit(); 119 120 } 121 122 /* setup() - performs all ONE TIME setup for this test */ 123 void setup(void) 124 { 125 tst_require_root(); 126 127 tst_sig(NOFORK, DEF_HANDLER, cleanup); 128 129 TEST_PAUSE; 130 131 } 132 133 /* 134 *cleanup() - performs all ONE TIME cleanup for this test at 135 * completion or premature exit. 136 */ 137 void cleanup(void) 138 { 139 140 /* 141 * back to I/O privilege for normal process. 142 */ 143 if (iopl(0) == -1) { 144 tst_resm(TWARN, "iopl() cleanup failed"); 145 } 146 147 } 148 149 #else /* __i386__ */ 150 151 #include "test.h" 152 153 int TST_TOTAL = 0; 154 155 int main(void) 156 { 157 tst_resm(TPASS, 158 "LSB v1.3 does not specify iopl() for this architecture."); 159 tst_exit(); 160 } 161 162 #endif /* __i386__ */ 163