1 /******************************************************************************/ 2 /* */ 3 /* Copyright (c) Ulrich Drepper <drepper (at) redhat.com> */ 4 /* Copyright (c) International Business Machines Corp., 2009 */ 5 /* */ 6 /* This program is free software; you can redistribute it and/or modify */ 7 /* it under the terms of the GNU General Public License as published by */ 8 /* the Free Software Foundation; either version 2 of the License, or */ 9 /* (at your option) any later version. */ 10 /* */ 11 /* This program is distributed in the hope that it will be useful, */ 12 /* but WITHOUT ANY WARRANTY; without even the implied warranty of */ 13 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See */ 14 /* the GNU General Public License for more details. */ 15 /* */ 16 /* You should have received a copy of the GNU General Public License */ 17 /* along with this program; if not, write to the Free Software */ 18 /* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ 19 /* */ 20 /******************************************************************************/ 21 /******************************************************************************/ 22 /* */ 23 /* File: timerfd02.c */ 24 /* */ 25 /* Description: This Program tests the new system call introduced in 2.6.27. */ 26 /* Ulrichs comment as in: */ 27 /* http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=11fcb6c14676023d0bd437841f5dcd670e7990a0 */ 28 /* says: */ 29 /* The timerfd_create syscall already has a flags parameter. It just is */ 30 /* unused so far. This patch changes this by introducing the TFD_CLOEXEC */ 31 /* flag to set the close-on-exec flag for the returned file descriptor. A new */ 32 /* name TFD_CLOEXEC is introduced which in this implementation must have the */ 33 /* same value as O_CLOEXEC. */ 34 /* The following test must be adjusted for architectures other than x86 and */ 35 /* x86-64 and in case the syscall numbers changed. */ 36 /* */ 37 /* Usage: <for command-line> */ 38 /* timerfd02 [-c n] [-e][-i n] [-I x] [-p x] [-t] */ 39 /* where, -c n : Run n copies concurrently. */ 40 /* -e : Turn on errno logging. */ 41 /* -i n : Execute test n times. */ 42 /* -I x : Execute test for x seconds. */ 43 /* -P x : Pause for x seconds between iterations. */ 44 /* -t : Turn on syscall timing. */ 45 /* */ 46 /* Total Tests: 1 */ 47 /* */ 48 /* Test Name: timerfd02 */ 49 /* */ 50 /* Author: Ulrich Drepper <drepper (at) redhat.com> */ 51 /* */ 52 /* History: Created - Jan 08 2009 - Ulrich Drepper <drepper (at) redhat.com> */ 53 /* Ported to LTP */ 54 /* - Jan 08 2009 - Subrata <subrata (at) linux.vnet.ibm.com> */ 55 /******************************************************************************/ 56 57 #include <fcntl.h> 58 #include <stdio.h> 59 #include <time.h> 60 #include <unistd.h> 61 #include <sys/syscall.h> 62 #include <errno.h> 63 64 #include "test.h" 65 #include "lapi/fcntl.h" 66 #include "linux_syscall_numbers.h" 67 68 #define TFD_CLOEXEC O_CLOEXEC 69 70 char *TCID = "timerfd02"; 71 int testno; 72 int TST_TOTAL = 1; 73 74 /* Extern Global Functions */ 75 /******************************************************************************/ 76 /* */ 77 /* Function: cleanup */ 78 /* */ 79 /* Description: Performs all one time clean up for this test on successful */ 80 /* completion, premature exit or failure. Closes all temporary */ 81 /* files, removes all temporary directories exits the test with */ 82 /* appropriate return code by calling tst_exit() function. */ 83 /* */ 84 /* Input: None. */ 85 /* */ 86 /* Output: None. */ 87 /* */ 88 /* Return: On failure - Exits calling tst_exit(). Non '0' return code. */ 89 /* On success - Exits calling tst_exit(). With '0' return code. */ 90 /* */ 91 /******************************************************************************/ 92 void cleanup(void) 93 { 94 95 tst_rmdir(); 96 97 } 98 99 /* Local Functions */ 100 /******************************************************************************/ 101 /* */ 102 /* Function: setup */ 103 /* */ 104 /* Description: Performs all one time setup for this test. This function is */ 105 /* typically used to capture signals, create temporary dirs */ 106 /* and temporary files that may be used in the course of this */ 107 /* test. */ 108 /* */ 109 /* Input: None. */ 110 /* */ 111 /* Output: None. */ 112 /* */ 113 /* Return: On failure - Exits by calling cleanup(). */ 114 /* On success - returns 0. */ 115 /* */ 116 /******************************************************************************/ 117 void setup(void) 118 { 119 /* Capture signals if any */ 120 /* Create temporary directories */ 121 TEST_PAUSE; 122 tst_tmpdir(); 123 } 124 125 int main(int argc, char *argv[]) 126 { 127 int fd, coe; 128 int lc; 129 130 tst_parse_opts(argc, argv, NULL, NULL); 131 if ((tst_kvercmp(2, 6, 27)) < 0) { 132 tst_brkm(TCONF, 133 NULL, 134 "This test can only run on kernels that are 2.6.27 and higher"); 135 } 136 setup(); 137 138 for (lc = 0; TEST_LOOPING(lc); ++lc) { 139 tst_count = 0; 140 for (testno = 0; testno < TST_TOTAL; ++testno) { 141 fd = ltp_syscall(__NR_timerfd_create, 142 CLOCK_REALTIME, 0); 143 if (fd == -1) { 144 tst_brkm(TFAIL, cleanup, 145 "timerfd_create(0) failed"); 146 } 147 coe = fcntl(fd, F_GETFD); 148 if (coe == -1) { 149 tst_brkm(TBROK, cleanup, "fcntl failed"); 150 } 151 if (coe & FD_CLOEXEC) { 152 tst_brkm(TFAIL, 153 cleanup, 154 "timerfd_create(0) set close-on-exec flag"); 155 } 156 close(fd); 157 158 fd = ltp_syscall(__NR_timerfd_create, CLOCK_REALTIME, 159 TFD_CLOEXEC); 160 if (fd == -1) { 161 tst_brkm(TFAIL, 162 cleanup, 163 "timerfd_create(TFD_CLOEXEC) failed"); 164 } 165 coe = fcntl(fd, F_GETFD); 166 if (coe == -1) { 167 tst_brkm(TBROK, cleanup, "fcntl failed"); 168 } 169 if ((coe & FD_CLOEXEC) == 0) { 170 tst_brkm(TFAIL, 171 cleanup, 172 "timerfd_create(TFD_CLOEXEC) set close-on-exec flag"); 173 } 174 close(fd); 175 tst_resm(TPASS, "timerfd_create(TFD_CLOEXEC) Passed"); 176 cleanup(); 177 } 178 } 179 tst_exit(); 180 } 181
