tests/kernel/kqueue/read/t_file2.c

   1 /* $NetBSD: t_file2.c,v 1.3 2010/11/07 17:51:20 jmmv 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 Jaromir Dolecek.
   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_file2.c,v 1.3 2010/11/07 17:51:20 jmmv Exp $");
  36
  37 #include <sys/event.h>
  38
  39 #include <fcntl.h>
  40 #include <unistd.h>
  41
  42 #include <atf-c.h>
  43
  44 #include "../../../h_macros.h"
  45
  46 ATF_TC(file2);
  47 ATF_TC_HEAD(file2, tc)
  48 {
  49         atf_tc_set_md_var(tc, "descr",
  50             "Checks EVFILT_READ for regular files. This test used to "
  51             "trigger deadlock caused by problem fixed in revision 1.79.2.10 "
  52             "of sys/kern/kern_descrip.c");
  53 }
  54 ATF_TC_BODY(file2, tc)
  55 {
  56         int fd1, fd2, kq;
  57         struct kevent event[1];
  58
  59         RL(fd1 = open("afile", O_RDONLY|O_CREAT, 0644));
  60         RL(fd2 = open("bfile", O_RDONLY|O_CREAT, 0644));
  61
  62 #if 1           /* XXX: why was this disabled? */
  63         RL(lseek(fd1, 0, SEEK_END));
  64 #endif
  65
  66         RL(kq = kqueue());
  67
  68         EV_SET(&event[0], fd1, EVFILT_READ, EV_ADD|EV_ENABLE, 0, 0, 0);
  69         RL(kevent(kq, event, 1, NULL, 0, NULL));
  70
  71         RL(dup2(fd2, fd1));
  72 }
  73
  74 ATF_TP_ADD_TCS(tp)
  75 {
  76         ATF_TP_ADD_TC(tp, file2);
  77
  78         return atf_no_error();
  79 }