vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 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 |
Wanlong Gao | fed9641 | 2012-10-24 10:10:29 +0800 | [diff] [blame] | 13 | * with this program; if not, write the Free Software Foundation, Inc., |
| 14 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 15 | * |
| 16 | */ |
| 17 | /********************************************************** |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 18 | * |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 19 | * TEST IDENTIFIER : ptrace03 |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 20 | * |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 21 | * EXECUTED BY : anyone |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 22 | * |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 23 | * TEST TITLE : Tests for error conditions |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 24 | * |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 25 | * TEST CASE TOTAL : 3 |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 26 | * |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 27 | * AUTHOR : Saji Kumar.V.R <saji.kumar@wipro.com> |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 28 | * |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 29 | * SIGNALS |
| 30 | * Uses SIGUSR1 to pause before test if option set. |
| 31 | * (See the parse_opts(3) man page). |
| 32 | * |
| 33 | * DESCRIPTION |
| 34 | * Verifies that |
| 35 | * 1) ptrace() returns -1 & sets errno to EPERM while tring to trace |
| 36 | * process 1 |
subrata_modak | 7a2fd9b | 2008-05-22 13:17:50 +0000 | [diff] [blame] | 37 | * (This test case will be executed only if the kernel version |
| 38 | * is 2.6.25 or below) |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 39 | * 2) ptrace() returns -1 & sets errno to ESRCH if process with |
| 40 | * specified pid does not exist |
| 41 | * 3) ptrace() returns -1 & sets errno to EPERM if we are trying |
| 42 | * to trace a process which is already been traced |
| 43 | * |
| 44 | * Setup: |
| 45 | * Setup signal handling. |
| 46 | * Pause for SIGUSR1 if option specified. |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 47 | * |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 48 | * Test: |
| 49 | * Loop if the proper options are given. |
| 50 | * setup signal handler for SIGUSR2 signal |
| 51 | * fork a child |
| 52 | * |
| 53 | * CHILD: |
| 54 | * call ptrace() with proper arguments |
| 55 | * if ptrace() failed with expected return value & errno |
| 56 | * exit with errno |
| 57 | * else |
| 58 | * Give proper error message |
| 59 | * exit with errno |
| 60 | * |
| 61 | * PARENT: |
| 62 | * Wait for child to finish |
| 63 | * if child exits with expected errno |
| 64 | * Test Passed |
| 65 | * else |
| 66 | * Test failed |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 67 | * |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 68 | * Cleanup: |
| 69 | * Print errno log and/or timing stats if options given |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 70 | * |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 71 | * USAGE: <for command-line> |
| 72 | * ptrace03 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-h] [-f] [-p] |
| 73 | * where, -c n : Run n copies concurrently. |
| 74 | * -e : Turn on errno logging. |
| 75 | * -h : Show help screen |
| 76 | * -f : Turn off functional testing |
| 77 | * -i n : Execute test n times. |
| 78 | * -I x : Execute test for x seconds. |
| 79 | * -p : Pause for SIGUSR1 before starting |
| 80 | * -P x : Pause for x seconds between iterations. |
| 81 | * -t : Turn on syscall timing. |
| 82 | * |
| 83 | ****************************************************************/ |
| 84 | |
| 85 | #include <errno.h> |
| 86 | #include <signal.h> |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 87 | #include <sys/wait.h> |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 88 | #include <pwd.h> |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 89 | |
vapier | 919dca8 | 2009-11-03 19:42:12 +0000 | [diff] [blame] | 90 | #include <config.h> |
| 91 | #include "ptrace.h" |
| 92 | |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 93 | #include "test.h" |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 94 | |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 95 | static void setup(void); |
| 96 | static void cleanup(void); |
| 97 | |
Cyril Hrubis | fdce7d5 | 2013-04-04 18:35:48 +0200 | [diff] [blame] | 98 | char *TCID = "ptrace03"; |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 99 | |
Stanislav Kholmanskikh | 23b37f3 | 2014-06-30 14:48:24 +0400 | [diff] [blame] | 100 | static pid_t init_pid = 1; |
| 101 | static pid_t unused_pid; |
| 102 | static pid_t zero_pid; |
| 103 | |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 104 | struct test_case_t { |
| 105 | enum __ptrace_request request; |
Stanislav Kholmanskikh | 23b37f3 | 2014-06-30 14:48:24 +0400 | [diff] [blame] | 106 | pid_t *pid; |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 107 | int exp_errno; |
| 108 | } test_cases[] = { |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 109 | { |
Stanislav Kholmanskikh | 23b37f3 | 2014-06-30 14:48:24 +0400 | [diff] [blame] | 110 | PTRACE_ATTACH, &init_pid, EPERM}, { |
| 111 | PTRACE_ATTACH, &unused_pid, ESRCH}, { |
| 112 | PTRACE_TRACEME, &zero_pid, EPERM},}; |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 113 | |
| 114 | int TST_TOTAL = sizeof(test_cases) / sizeof(test_cases[0]); |
| 115 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 116 | int main(int ac, char **av) |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 117 | { |
| 118 | |
Cyril Hrubis | 89af32a | 2012-10-24 16:39:11 +0200 | [diff] [blame] | 119 | int lc, i; |
Cyril Hrubis | 0b9589f | 2014-05-27 17:40:33 +0200 | [diff] [blame] | 120 | const char *msg; |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 121 | pid_t child_pid; |
| 122 | int status; |
| 123 | |
Garrett Cooper | 7d0a4a5 | 2010-12-16 10:05:08 -0800 | [diff] [blame] | 124 | if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) |
Garrett Cooper | 60fa801 | 2010-11-22 13:50:58 -0800 | [diff] [blame] | 125 | tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 126 | |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 127 | setup(); |
| 128 | |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 129 | for (lc = 0; TEST_LOOPING(lc); lc++) { |
| 130 | |
Caspar Zhang | d59a659 | 2013-03-07 14:59:12 +0800 | [diff] [blame] | 131 | tst_count = 0; |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 132 | |
| 133 | for (i = 0; i < TST_TOTAL; ++i) { |
| 134 | |
subrata_modak | 7a2fd9b | 2008-05-22 13:17:50 +0000 | [diff] [blame] | 135 | /* since Linux 2.6.26, it's allowed to trace init, |
| 136 | so just skip this test case */ |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 137 | if (i == 0 && tst_kvercmp(2, 6, 25) > 0) { |
subrata_modak | 7a2fd9b | 2008-05-22 13:17:50 +0000 | [diff] [blame] | 138 | tst_resm(TCONF, |
| 139 | "this kernel allows to trace init"); |
| 140 | continue; |
| 141 | } |
| 142 | |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 143 | /* fork() */ |
mridge | ed06ca6 | 2006-02-14 16:55:09 +0000 | [diff] [blame] | 144 | switch (child_pid = FORK_OR_VFORK()) { |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 145 | |
| 146 | case -1: |
| 147 | /* fork() failed */ |
| 148 | tst_resm(TFAIL, "fork() failed"); |
| 149 | continue; |
| 150 | |
| 151 | case 0: |
| 152 | /* Child */ |
| 153 | |
| 154 | /* setup for third test case */ |
| 155 | if (i == 2) { |
| 156 | if ((ptrace(PTRACE_TRACEME, 0, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 157 | NULL, NULL)) == -1) { |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 158 | tst_resm(TWARN, "ptrace()" |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 159 | " falied with errno, %d : %s", |
| 160 | errno, |
| 161 | strerror(errno)); |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 162 | exit(0); |
| 163 | } |
| 164 | } |
| 165 | |
| 166 | TEST(ptrace(test_cases[i].request, |
Stanislav Kholmanskikh | 23b37f3 | 2014-06-30 14:48:24 +0400 | [diff] [blame] | 167 | *(test_cases[i].pid), NULL, NULL)); |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 168 | if ((TEST_RETURN == -1) && (TEST_ERRNO == |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 169 | test_cases |
| 170 | [i].exp_errno)) { |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 171 | exit(TEST_ERRNO); |
| 172 | } else { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 173 | tst_resm(TWARN | TTERRNO, |
| 174 | "ptrace() returned %ld", |
subrata_modak | 923b23f | 2009-11-02 13:57:16 +0000 | [diff] [blame] | 175 | TEST_RETURN); |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 176 | exit(TEST_ERRNO); |
| 177 | } |
| 178 | |
| 179 | default: |
| 180 | /* Parent */ |
| 181 | if ((waitpid(child_pid, &status, 0)) < 0) { |
| 182 | tst_resm(TFAIL, "waitpid() failed"); |
| 183 | continue; |
| 184 | } |
| 185 | if ((WIFEXITED(status)) && |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 186 | (WEXITSTATUS(status) == |
| 187 | test_cases[i].exp_errno)) { |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 188 | tst_resm(TPASS, "Test Passed"); |
| 189 | } else { |
| 190 | tst_resm(TFAIL, "Test Failed"); |
| 191 | } |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 192 | } |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | /* cleanup and exit */ |
| 197 | cleanup(); |
| 198 | |
Garrett Cooper | 5374050 | 2010-12-16 00:04:01 -0800 | [diff] [blame] | 199 | tst_exit(); |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 200 | |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 201 | } |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 202 | |
| 203 | /* setup() - performs all ONE TIME setup for this test */ |
Mike Frysinger | c57fba5 | 2014-04-09 18:56:30 -0400 | [diff] [blame] | 204 | void setup(void) |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 205 | { |
Stanislav Kholmanskikh | 23b37f3 | 2014-06-30 14:48:24 +0400 | [diff] [blame] | 206 | unused_pid = tst_get_unused_pid(cleanup); |
subrata_modak | bdbaec5 | 2009-02-26 12:14:51 +0000 | [diff] [blame] | 207 | |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 208 | TEST_PAUSE; |
subrata_modak | bdbaec5 | 2009-02-26 12:14:51 +0000 | [diff] [blame] | 209 | |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 210 | } |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 211 | |
| 212 | /* |
| 213 | *cleanup() - performs all ONE TIME cleanup for this test at |
| 214 | * completion or premature exit. |
| 215 | */ |
Mike Frysinger | c57fba5 | 2014-04-09 18:56:30 -0400 | [diff] [blame] | 216 | void cleanup(void) |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 217 | { |
| 218 | |
Chris Dearman | ec6edca | 2012-10-17 19:54:01 -0700 | [diff] [blame] | 219 | } |