1 /******************************************************************************/
2 /* */
3 /* Copyright (c) Ulrich Drepper <drepper@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_01.c */
24 /* */
25 /* Description: This Program tests the new system call introduced in 2.6.27. */
26 /* Ulrich´s comment as in: */
27 /* http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ed8cae8ba01348bfd83333f4648dd807b04d7f08 */
28 /* says: */
29 /* This patch introduces the new syscall pipe2 which is like pipe but it also */
30 /* takes an additional parameter which takes a flag value. This patch */
31 /* implements the handling of O_CLOEXEC for the flag. I did not add support */
32 /* for the new syscall for the architectures which have a special sys_pipe */
33 /* implementation. I think the maintainers of those archs have the chance to */
34 /* go with the unified implementation but that's up to them. */
35 /* */
36 /* The implementation introduces do_pipe_flags. I did that instead of */
37 /* changing all callers of do_pipe because some of the callers are written in */
38 /* assembler. I would probably screw up changing the assembly code. To avoid */
39 /* breaking code do_pipe is now a small wrapper around do_pipe_flags. Once */
40 /* all callers are changed over to do_pipe_flags the old do_pipe function can */
41 /* be removed. */
42 /* The following test must be adjusted for architectures other than x86 and */
43 /* x86-64 and in case the syscall numbers changed. */
44 /* */
45 /* Usage: <for command-line> */
46 /* pipe2_01 [-c n] [-e][-i n] [-I x] [-p x] [-t] */
47 /* where, -c n : Run n copies concurrently. */
48 /* -e : Turn on errno logging. */
49 /* -i n : Execute test n times. */
50 /* -I x : Execute test for x seconds. */
51 /* -P x : Pause for x seconds between iterations. */
52 /* -t : Turn on syscall timing. */
53 /* */
54 /* Total Tests: 1 */
55 /* */
56 /* Test Name: pipe2_01 */
57 /* */
58 /* Author: Ulrich Drepper <drepper@redhat.com> */
59 /* */
60 /* History: Created - Jan 13 2009 - Ulrich Drepper <drepper@redhat.com> */
61 /* Ported to LTP */
62 /* - Jan 13 2009 - Subrata <subrata@linux.vnet.ibm.com> */
63 /******************************************************************************/
64 #include <fcntl.h>
65 #include <stdio.h>
66 #include <unistd.h>
67 #include <sys/syscall.h>
68 #include <errno.h>
69
70 #include "test.h"
71 #include "lapi/fcntl.h"
72 #include "lapi/syscalls.h"
73
74 char *TCID = "pipe2_01";
75 int testno;
76 int TST_TOTAL = 1;
77
78 /* Extern Global Functions */
79 /******************************************************************************/
80 /* */
81 /* Function: cleanup */
82 /* */
83 /* Description: Performs all one time clean up for this test on successful */
84 /* completion, premature exit or failure. Closes all temporary */
85 /* files, removes all temporary directories exits the test with */
86 /* appropriate return code by calling tst_exit() function. */
87 /* */
88 /* Input: None. */
89 /* */
90 /* Output: None. */
91 /* */
92 /* Return: On failure - Exits calling tst_exit(). Non '0' return code. */
93 /* On success - Exits calling tst_exit(). With '0' return code. */
94 /* */
95 /******************************************************************************/
cleanup(void)96 void cleanup(void)
97 {
98
99 tst_rmdir();
100
101 }
102
103 /* Local Functions */
104 /******************************************************************************/
105 /* */
106 /* Function: setup */
107 /* */
108 /* Description: Performs all one time setup for this test. This function is */
109 /* typically used to capture signals, create temporary dirs */
110 /* and temporary files that may be used in the course of this */
111 /* test. */
112 /* */
113 /* Input: None. */
114 /* */
115 /* Output: None. */
116 /* */
117 /* Return: On failure - Exits by calling cleanup(). */
118 /* On success - returns 0. */
119 /* */
120 /******************************************************************************/
setup(void)121 void setup(void)
122 {
123 /* Capture signals if any */
124 /* Create temporary directories */
125 TEST_PAUSE;
126 tst_tmpdir();
127 }
128
main(int argc,char * argv[])129 int main(int argc, char *argv[])
130 {
131 int fd[2], i, coe;
132 int lc;
133
134 tst_parse_opts(argc, argv, NULL, NULL);
135 if ((tst_kvercmp(2, 6, 27)) < 0) {
136 tst_brkm(TCONF,
137 NULL,
138 "This test can only run on kernels that are 2.6.27 and higher");
139 }
140 setup();
141
142 for (lc = 0; TEST_LOOPING(lc); ++lc) {
143 tst_count = 0;
144 for (testno = 0; testno < TST_TOTAL; ++testno) {
145 if (ltp_syscall(__NR_pipe2, fd, 0) != 0) {
146 tst_brkm(TFAIL, cleanup, "pipe2(0) failed");
147 }
148 for (i = 0; i < 2; ++i) {
149 coe = fcntl(fd[i], F_GETFD);
150 if (coe == -1) {
151 tst_brkm(TBROK, cleanup,
152 "fcntl failed");
153 }
154 if (coe & FD_CLOEXEC) {
155 tst_brkm(TFAIL,
156 cleanup, "pipe2(0) set close-on-exit for fd[%d]",
157 i);
158 }
159 }
160 close(fd[0]);
161 close(fd[1]);
162
163 if (ltp_syscall(__NR_pipe2, fd, O_CLOEXEC) != 0) {
164 tst_brkm(TFAIL, cleanup,
165 "pipe2(O_CLOEXEC) failed");
166 }
167 for (i = 0; i < 2; ++i) {
168 coe = fcntl(fd[i], F_GETFD);
169 if (coe == -1) {
170 tst_brkm(TBROK, cleanup,
171 "fcntl failed");
172 }
173 if ((coe & FD_CLOEXEC) == 0) {
174 tst_brkm(TFAIL,
175 cleanup, "pipe2(O_CLOEXEC) does not set close-on-exit for fd[%d]",
176 i);
177 }
178 }
179 close(fd[0]);
180 close(fd[1]);
181 tst_resm(TPASS, "pipe2(O_CLOEXEC) PASSED");
182 cleanup();
183 }
184 }
185 tst_exit();
186 }
187