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
52 #define FILENAME "select03"
53
54 static void setup(void);
55 static void cleanup(void);
56
57 char *TCID = "select03";
58 int TST_TOTAL = 1;
59
60 int Fd;
61 fd_set saved_Readfds, saved_Writefds;
62 fd_set Readfds, Writefds;
63
main(int ac,char ** av)64 int main(int ac, char **av)
65 {
66 int lc;
67 struct timeval timeout;
68 long test_time = 0; /* in usecs */
69
70 tst_parse_opts(ac, av, NULL, NULL);
71
72 setup();
73
74 for (lc = 0; TEST_LOOPING(lc); lc++) {
75
76 tst_count = 0;
77
78 test_time = ((lc % 2000) * 100000); /* 100 milli-seconds */
79
80 if (test_time > 1000000 * 60)
81 test_time = test_time % (1000000 * 60);
82
83 timeout.tv_sec = test_time / 1000000;
84 timeout.tv_usec = test_time - (timeout.tv_sec * 1000000);
85
86 Readfds = saved_Readfds;
87 Writefds = saved_Writefds;
88
89 TEST(select(5, &Readfds, &Writefds, 0, &timeout));
90
91 if (TEST_RETURN == -1) {
92 tst_resm(TFAIL,
93 "%d select(5, &Readfds, &Writefds, 0, &timeout) failed errno=%d\n",
94 lc, errno);
95 } else {
96 tst_resm(TPASS,
97 "select(5, &Readfds, &Writefds, 0, &timeout) timeout = %ld usecs",
98 test_time);
99 }
100
101 }
102
103 cleanup();
104 tst_exit();
105 }
106
setup(void)107 static void setup(void)
108 {
109
110 tst_sig(FORK, DEF_HANDLER, cleanup);
111
112 TEST_PAUSE;
113
114 tst_tmpdir();
115
116 if (mkfifo(FILENAME, 0777) == -1) {
117 tst_brkm(TBROK, cleanup, "mkfifo(%s, 0777) failed, errno=%d",
118 FILENAME, errno);
119 }
120
121 if ((Fd = open(FILENAME, O_RDWR)) == -1) {
122 tst_brkm(TBROK, cleanup, "open(%s, O_RDWR) failed, errno=%d",
123 FILENAME, errno);
124 }
125
126 FD_ZERO(&saved_Readfds);
127 FD_ZERO(&saved_Writefds);
128 FD_SET(Fd, &saved_Readfds);
129 FD_SET(Fd, &saved_Writefds);
130 }
131
cleanup(void)132 static void cleanup(void)
133 {
134 close(Fd);
135 tst_rmdir();
136 }
137