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 54static void setup(void); 55static void cleanup(void); 56 57char *TCID = "select03"; 58int TST_TOTAL = 1; 59 60int Fd; 61fd_set saved_Readfds, saved_Writefds; 62fd_set Readfds, Writefds; 63 64int 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 107static 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 132static void cleanup(void) 133{ 134 close(Fd); 135 tst_rmdir(); 136} 137