1 /* $NetBSD: t_file.c,v 1.4 2017/01/13 21:30:41 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2002, 2008 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Luke Mewburn. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __COPYRIGHT("@(#) Copyright (c) 2008\ 34 The NetBSD Foundation, inc. All rights reserved."); 35 __RCSID("$NetBSD: t_file.c,v 1.4 2017/01/13 21:30:41 christos Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/event.h> 39 #include <sys/mount.h> 40 #include <sys/wait.h> 41 42 #include <err.h> 43 #include <errno.h> 44 #include <fcntl.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <unistd.h> 49 #include <inttypes.h> 50 51 #include <atf-c.h> 52 53 #include "h_macros.h" 54 55 #define FILENAME "file" 56 #define NLINES 5 57 58 static void 59 child(void) 60 { 61 int i, n, fd; 62 63 (void)sleep(1); 64 65 for (i = 0; i < NLINES; ++i) { 66 fd = open(FILENAME, O_WRONLY|O_APPEND, 0644); 67 if (fd < 0) 68 err(EXIT_FAILURE, "open()"); 69 70 n = write(fd, "foo\n", 4); 71 if (n < 0) 72 err(EXIT_FAILURE, "write()"); 73 74 (void)close(fd); 75 (void)sleep(1); 76 } 77 _exit(0); 78 } 79 80 ATF_TC(file); 81 ATF_TC_HEAD(file, tc) 82 { 83 atf_tc_set_md_var(tc, "descr", "Checks EVFILT_READ on regular file"); 84 } 85 ATF_TC_BODY(file, tc) 86 { 87 char buffer[128]; 88 struct kevent event[1]; 89 pid_t pid; 90 int fd, kq, n, num, status; 91 92 RL(pid = fork()); 93 if (pid == 0) { 94 child(); 95 /* NOTREACHED */ 96 } 97 98 RL(fd = open(FILENAME, O_RDONLY|O_CREAT, 0644)); 99 100 #if 1 /* XXX: why was this disabled? */ 101 RL(lseek(fd, 0, SEEK_END)); 102 #endif 103 104 RL(kq = kqueue()); 105 106 EV_SET(&event[0], fd, EVFILT_READ, EV_ADD|EV_ENABLE, 0, 0, 0); 107 RL(kevent(kq, event, 1, NULL, 0, NULL)); 108 109 for (num = 0; num < NLINES;) { 110 RL(n = kevent(kq, NULL, 0, event, 1, NULL)); 111 num += n; 112 113 (void)printf("kevent num %d flags: %#x, fflags: %#x, data: " 114 #ifdef __FreeBSD__ 115 "%" PRIdPTR "\n", n, event[0].flags, event[0].fflags, 116 #else 117 "%" PRId64 "\n", n, event[0].flags, event[0].fflags, 118 #endif 119 event[0].data); 120 121 if (event[0].data < 0) 122 #if 1 /* XXXLUKEM */ 123 RL(lseek(fd, 0, SEEK_END)); 124 #else 125 RL(lseek(fd, event[0].data, SEEK_END)); 126 #endif 127 128 RL(n = read(fd, buffer, 128)); 129 buffer[n] = '\0'; 130 (void)printf("file(%d): %s", num, buffer); 131 } 132 133 (void)waitpid(pid, &status, 0); 134 135 (void)printf("read: successful end\n"); 136 } 137 138 ATF_TP_ADD_TCS(tp) 139 { 140 ATF_TP_ADD_TC(tp, file); 141 142 return atf_no_error(); 143 } 144