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      1 /* $NetBSD: t_pipe.c,v 1.2 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 and 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_pipe.c,v 1.2 2017/01/13 21:30:41 christos Exp $");
     36 
     37 #include <sys/event.h>
     38 
     39 #include <stdio.h>
     40 #include <unistd.h>
     41 
     42 #include <atf-c.h>
     43 
     44 #include "h_macros.h"
     45 
     46 ATF_TC(pipe);
     47 ATF_TC_HEAD(pipe, tc)
     48 {
     49 	atf_tc_set_md_var(tc, "descr", "Checks EVFILT_READ for pipes");
     50 }
     51 ATF_TC_BODY(pipe, tc)
     52 {
     53 	struct kevent event[1];
     54 	char buffer[128];
     55 	int fds[2];
     56 	int kq, n;
     57 
     58 	RL(pipe(fds));
     59 	RL(kq = kqueue());
     60 
     61 	EV_SET(&event[0], fds[0], EVFILT_READ, EV_ADD|EV_ENABLE, 0, 0, 0);
     62 	RL(kevent(kq, event, 1, NULL, 0, NULL));
     63 
     64 	/* make sure there is something in the pipe */
     65 	RL(write(fds[1], "foo", 3));
     66 	(void)printf("pipe: wrote 'foo' to pipe\n");
     67 
     68 	RL(n = kevent(kq, NULL, 0, event, 1, NULL));
     69 	(void)printf("kevent num %d flags: %#x, fflags: %#x, data: "
     70 	    "%" PRId64 "\n", n, event[0].flags, event[0].fflags, event[0].data);
     71 
     72 	RL(n = read(fds[0], buffer, event[0].data));
     73 	buffer[n] = '\0';
     74 
     75 	(void)printf("pipe: read '%s'\n", buffer);
     76 	(void)printf("pipe: successful end\n");
     77 }
     78 
     79 ATF_TP_ADD_TCS(tp)
     80 {
     81 	ATF_TP_ADD_TC(tp, pipe);
     82 
     83 	return atf_no_error();
     84 }
     85