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  *    AUTHOR            : Richard Logan
34  *    CO-PILOT          : William Roske
35  *    DATE STARTED      : 02/24/93
36  *
37  *      1.) select(2) to a fd of regular file with no I/O and small timeout
38  */
39 
40 #include <errno.h>
41 #include <signal.h>
42 #include <fcntl.h>
43 #include <signal.h>
44 #include <string.h>
45 #include <sys/param.h>
46 #include <sys/types.h>
47 #include <sys/time.h>
48 
49 #include "test.h"
50 
51 #define FILENAME	"select01"
52 
53 static void setup(void);
54 static void cleanup(void);
55 
56 char *TCID = "select01";
57 int TST_TOTAL = 1;
58 
59 int Fd = -1;
60 fd_set Readfds;
61 
62 int main(int ac, char **av)
63 {
64 	int lc;
65 	struct timeval timeout;
66 	long test_time = 0;	/* in usecs */
67 
68 	tst_parse_opts(ac, av, NULL, NULL);
69 
70 	setup();
71 
72 	for (lc = 0; TEST_LOOPING(lc); lc++) {
73 		tst_count = 0;
74 
75 		test_time = ((lc % 2000) * 100000);	/* 100 milli-seconds */
76 
77 		if (test_time > 1000000 * 60)
78 			test_time = test_time % (1000000 * 60);
79 
80 		timeout.tv_sec = test_time / 1000000;
81 		timeout.tv_usec = test_time - (timeout.tv_sec * 1000000);
82 
83 		TEST(select(4, &Readfds, 0, 0, &timeout));
84 
85 		if (TEST_RETURN == -1) {
86 			tst_resm(TFAIL,
87 				 "%d select(4, &Readfds, 0, 0, &timeout), timeout = %ld usecs, errno=%d",
88 				 lc, test_time, errno);
89 		}
90 
91 		tst_resm(TPASS,
92 			 "select(4, &Readfds, 0, 0, &timeout) timeout = %ld usecs",
93 			 test_time);
94 
95 	}
96 
97 	cleanup();
98 	tst_exit();
99 }
100 
101 static void setup(void)
102 {
103 	tst_sig(FORK, DEF_HANDLER, cleanup);
104 
105 	TEST_PAUSE;
106 
107 	tst_tmpdir();
108 
109 	if ((Fd = open(FILENAME, O_CREAT | O_RDWR, 0777)) == -1)
110 		tst_brkm(TBROK | TERRNO, cleanup,
111 			 "open(%s, O_CREAT | O_RDWR) failed", FILENAME);
112 
113 	FD_ZERO(&Readfds);
114 	FD_SET(Fd, &Readfds);
115 }
116 
117 static void cleanup(void)
118 {
119 	if (Fd >= 0) {
120 		if (close(Fd) == -1)
121 			tst_resm(TWARN | TERRNO, "close(%s) failed", FILENAME);
122 		Fd = -1;
123 	}
124 
125 	tst_rmdir();
126 }
127