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t_fifo.c revision 1.1.2.2 
      1 /* $NetBSD: t_fifo.c,v 1.1.2.2 2009/05/13 19:19:34 jym Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 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_fifo.c,v 1.1.2.2 2009/05/13 19:19:34 jym Exp $");
     36 
     37 #include <sys/event.h>
     38 #include <sys/stat.h>
     39 
     40 #include <fcntl.h>
     41 #include <stdio.h>
     42 #include <stdlib.h>
     43 #include <string.h>
     44 #include <unistd.h>
     45 #include <inttypes.h>
     46 
     47 #include <atf-c.h>
     48 
     49 #include "../../../h_macros.h"
     50 
     51 #define FIFONAME "fifo"
     52 
     53 ATF_TC(fifo);
     54 ATF_TC_HEAD(fifo, tc)
     55 {
     56 	atf_tc_set_md_var(tc, "descr", "Checks EVFILT_READ on fifo");
     57 }
     58 ATF_TC_BODY(fifo, tc)
     59 {
     60 	int kq, n, fd;
     61 	struct kevent event[1];
     62 	char buffer[128];
     63 
     64 	RL(mkfifo(FIFONAME, 0644));
     65 	RL(fd = open(FIFONAME, O_RDWR, 0644));
     66 
     67 	RL(kq = kqueue());
     68 
     69 	EV_SET(&event[0], fd, EVFILT_READ, EV_ADD|EV_ENABLE, 0, 0, 0);
     70 	RL(kevent(kq, event, 1, NULL, 0, NULL));
     71 
     72 	/* make sure there is something in the fifo */
     73 	RL(write(fd, "foo", 3));
     74 	(void)printf("fifo: wrote 'foo'\n");
     75 
     76 	(void)memset(event, 0, sizeof(event));
     77 
     78 	RL(n = kevent(kq, NULL, 0, event, 1, NULL));
     79 
     80 	(void)printf("kevent num %d filt %d flags: %#x, fflags: %#x, "
     81 	    "data: %" PRId64 "\n", n, event[0].filter, event[0].flags,
     82 	    event[0].fflags, event[0].data);
     83 
     84 	ATF_REQUIRE_EQ(event[0].filter, EVFILT_READ);
     85 
     86 	RL(n = read(fd, buffer, event[0].data));
     87 	buffer[n] = '\0';
     88 	(void)printf("fifo: read '%s'\n", buffer);
     89 
     90 	RL(close(fd));
     91 }
     92 
     93 ATF_TP_ADD_TCS(tp)
     94 {
     95 	ATF_TP_ADD_TC(tp, fifo);
     96 
     97 	return atf_no_error();
     98 }
     99