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      1 /* $NetBSD: t_file2.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 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 1.4 2017/01/13 21:30:41 christos 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 }
     80