1 /*
2 * Copyright (c) 2000 Silicon Graphics, Inc. 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 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
14 * or the like. Any license provided herein, whether implied or
15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc.,
21 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 *
23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
24 * Mountain View, CA 94043, or:
25 *
26 * http://www.sgi.com
27 *
28 * For further information regarding this notice, see:
29 *
30 * http://oss.sgi.com/projects/GenInfo/NoticeExplan/
31 *
32 */
33 /*
34 * AUTHOR : Richard Logan
35 * CO-PILOT : Glen Overby
36 * DATE STARTED : 02/24/93
37 *
38 * 1.) select(2) of fd of a named-pipe (FIFO) with no I/O and small timeout value
39 */
40
41 #include <errno.h>
42 #include <signal.h>
43 #include <fcntl.h>
44 #include <signal.h>
45 #include <sys/param.h>
46 #include <sys/types.h>
47 #include <sys/time.h>
48 #include <sys/stat.h>
49
50 #include "test.h"
51 #include "safe_macros.h"
52
53 #define FILENAME "select03"
54
55 static void setup(void);
56 static void cleanup(void);
57
58 char *TCID = "select03";
59 int TST_TOTAL = 1;
60
61 int Fd;
62 fd_set saved_Readfds, saved_Writefds;
63 fd_set Readfds, Writefds;
64
main(int ac,char ** av)65 int main(int ac, char **av)
66 {
67 int lc;
68 struct timeval timeout;
69 long test_time = 0; /* in usecs */
70
71 tst_parse_opts(ac, av, NULL, NULL);
72
73 setup();
74
75 for (lc = 0; TEST_LOOPING(lc); lc++) {
76
77 tst_count = 0;
78
79 test_time = ((lc % 2000) * 100000); /* 100 milli-seconds */
80
81 if (test_time > 1000000 * 60)
82 test_time = test_time % (1000000 * 60);
83
84 timeout.tv_sec = test_time / 1000000;
85 timeout.tv_usec = test_time - (timeout.tv_sec * 1000000);
86
87 Readfds = saved_Readfds;
88 Writefds = saved_Writefds;
89
90 TEST(select(5, &Readfds, &Writefds, 0, &timeout));
91
92 if (TEST_RETURN == -1) {
93 tst_resm(TFAIL,
94 "%d select(5, &Readfds, &Writefds, 0, &timeout) failed errno=%d\n",
95 lc, errno);
96 } else {
97 tst_resm(TPASS,
98 "select(5, &Readfds, &Writefds, 0, &timeout) timeout = %ld usecs",
99 test_time);
100 }
101
102 }
103
104 cleanup();
105 tst_exit();
106 }
107
setup(void)108 static void setup(void)
109 {
110
111 tst_sig(FORK, DEF_HANDLER, cleanup);
112
113 TEST_PAUSE;
114
115 tst_tmpdir();
116
117 SAFE_MKFIFO(cleanup, FILENAME, 0777);
118
119 if ((Fd = open(FILENAME, O_RDWR)) == -1) {
120 tst_brkm(TBROK, cleanup, "open(%s, O_RDWR) failed, errno=%d",
121 FILENAME, errno);
122 }
123
124 FD_ZERO(&saved_Readfds);
125 FD_ZERO(&saved_Writefds);
126 FD_SET(Fd, &saved_Readfds);
127 FD_SET(Fd, &saved_Writefds);
128 }
129
cleanup(void)130 static void cleanup(void)
131 {
132 close(Fd);
133 tst_rmdir();
134 }
135