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: pipe2_02.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=be61a86d7237dd80510615f38ae21d6e1e98660c */ 28 /* which says: */ 29 /* This patch adds O_NONBLOCK support to pipe2. It is minimally more involved*/ 30 /* than the patches for eventfd et.al but still trivial. The interfaces of */ 31 /* the create_write_pipe and create_read_pipe helper functions were changed */ 32 /* and the one other caller as well. */ 33 /* The following test must be adjusted for architectures other than x86 and */ 34 /* x86-64 and in case the syscall numbers changed. */ 35 /* */ 36 /* Usage: <for command-line> */ 37 /* pipe2_02 [-c n] [-e][-i n] [-I x] [-p x] [-t] */ 38 /* where, -c n : Run n copies concurrently. */ 39 /* -e : Turn on errno logging. */ 40 /* -i n : Execute test n times. */ 41 /* -I x : Execute test for x seconds. */ 42 /* -P x : Pause for x seconds between iterations. */ 43 /* -t : Turn on syscall timing. */ 44 /* */ 45 /* Total Tests: 1 */ 46 /* */ 47 /* Test Name: pipe2_02 */ 48 /* */ 49 /* Author: Ulrich Drepper <drepper (at) redhat.com> */ 50 /* */ 51 /* History: Created - Jan 13 2009 - Ulrich Drepper <drepper (at) redhat.com> */ 52 /* Ported to LTP */ 53 /* - Jan 13 2009 - Subrata <subrata (at) linux.vnet.ibm.com> */ 54 /******************************************************************************/ 55 #include <fcntl.h> 56 #include <stdio.h> 57 #include <unistd.h> 58 #include <sys/syscall.h> 59 #include <errno.h> 60 61 #include "test.h" 62 #include "lapi/fcntl.h" 63 #include "lapi/syscalls.h" 64 65 char *TCID = "pipe2_02"; 66 int testno; 67 int TST_TOTAL = 1; 68 69 /* Extern Global Functions */ 70 /******************************************************************************/ 71 /* */ 72 /* Function: cleanup */ 73 /* */ 74 /* Description: Performs all one time clean up for this test on successful */ 75 /* completion, premature exit or failure. Closes all temporary */ 76 /* files, removes all temporary directories exits the test with */ 77 /* appropriate return code by calling tst_exit() function. */ 78 /* */ 79 /* Input: None. */ 80 /* */ 81 /* Output: None. */ 82 /* */ 83 /* Return: On failure - Exits calling tst_exit(). Non '0' return code. */ 84 /* On success - Exits calling tst_exit(). With '0' return code. */ 85 /* */ 86 /******************************************************************************/ 87 void cleanup(void) 88 { 89 90 tst_rmdir(); 91 92 } 93 94 /* Local Functions */ 95 /******************************************************************************/ 96 /* */ 97 /* Function: setup */ 98 /* */ 99 /* Description: Performs all one time setup for this test. This function is */ 100 /* typically used to capture signals, create temporary dirs */ 101 /* and temporary files that may be used in the course of this */ 102 /* test. */ 103 /* */ 104 /* Input: None. */ 105 /* */ 106 /* Output: None. */ 107 /* */ 108 /* Return: On failure - Exits by calling cleanup(). */ 109 /* On success - returns 0. */ 110 /* */ 111 /******************************************************************************/ 112 void setup(void) 113 { 114 /* Capture signals if any */ 115 /* Create temporary directories */ 116 TEST_PAUSE; 117 tst_tmpdir(); 118 } 119 120 int main(int argc, char *argv[]) 121 { 122 int fds[2], fl, i; 123 int lc; 124 125 tst_parse_opts(argc, argv, NULL, NULL); 126 if ((tst_kvercmp(2, 6, 27)) < 0) { 127 tst_brkm(TCONF, 128 NULL, 129 "This test can only run on kernels that are 2.6.27 and higher"); 130 } 131 setup(); 132 133 for (lc = 0; TEST_LOOPING(lc); ++lc) { 134 tst_count = 0; 135 for (testno = 0; testno < TST_TOTAL; ++testno) { 136 if (ltp_syscall(__NR_pipe2, fds, 0) == -1) { 137 tst_brkm(TFAIL, cleanup, "pipe2(0) failed"); 138 } 139 for (i = 0; i < 2; ++i) { 140 fl = fcntl(fds[i], F_GETFL); 141 if (fl == -1) { 142 tst_brkm(TBROK, cleanup, 143 "fcntl failed"); 144 } 145 if (fl & O_NONBLOCK) { 146 tst_brkm(TFAIL, 147 cleanup, "pipe2(0) set non-blocking mode for fds[%d]", 148 i); 149 } 150 close(fds[i]); 151 } 152 153 if (ltp_syscall(__NR_pipe2, fds, O_NONBLOCK) == -1) { 154 tst_brkm(TFAIL, cleanup, 155 "pipe2(O_NONBLOCK) failed"); 156 } 157 for (i = 0; i < 2; ++i) { 158 fl = fcntl(fds[i], F_GETFL); 159 if (fl == -1) { 160 tst_brkm(TBROK, cleanup, 161 "fcntl failed"); 162 } 163 if ((fl & O_NONBLOCK) == 0) { 164 tst_brkm(TFAIL, 165 cleanup, "pipe2(O_NONBLOCK) does not set non-blocking mode for fds[%d]\n", 166 i); 167 } 168 close(fds[i]); 169 } 170 tst_resm(TPASS, "pipe2(O_NONBLOCK) PASSED"); 171 cleanup(); 172 } 173 } 174 tst_exit(); 175 } 176
