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t_fifo.c
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t_pipe.c
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t_ttypty.c
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Editing: t_fifo.c
/* $NetBSD: t_fifo.c,v 1.4 2017/01/13 21:30:41 christos Exp $ */ /*- * Copyright (c) 2002, 2008 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Luke Mewburn and Jaromir Dolecek. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include <sys/cdefs.h> __COPYRIGHT("@(#) Copyright (c) 2008\ The NetBSD Foundation, inc. All rights reserved."); __RCSID("$NetBSD: t_fifo.c,v 1.4 2017/01/13 21:30:41 christos Exp $"); #include <sys/event.h> #include <sys/stat.h> #include <sys/wait.h> #include <fcntl.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <atf-c.h> #include "h_macros.h" #define FIFONAME "fifo" ATF_TC(fifo); ATF_TC_HEAD(fifo, tc) { atf_tc_set_md_var(tc, "descr", "Checks EVFILT_WRITE for fifo"); } ATF_TC_BODY(fifo, tc) { char buffer[128]; struct kevent event[1]; pid_t child; int kq, n, fd, status; RL(mkfifo(FIFONAME, 0644)); RL(fd = open(FIFONAME, O_RDWR, 0644)); RL(kq = kqueue()); /* spawn child reader */ RL(child = fork()); if (child == 0) { int sz = read(fd, buffer, 128); if (sz > 0) (void)printf("fifo: child read '%.*s'\n", sz, buffer); _exit(sz <= 0); } EV_SET(&event[0], fd, EVFILT_WRITE, EV_ADD|EV_ENABLE, 0, 0, 0); RL(kevent(kq, event, 1, NULL, 0, NULL)); (void)memset(event, 0, sizeof(event)); RL(n = kevent(kq, NULL, 0, event, 1, NULL)); (void)printf("kevent num %d filt %d flags: %#x, fflags: %#x, " "data: %" PRId64 "\n", n, event[0].filter, event[0].flags, event[0].fflags, event[0].data); ATF_REQUIRE_EQ(event[0].filter, EVFILT_WRITE); RL(write(fd, "foo", 3)); (void)printf("fifo: wrote 'foo'\n"); RL(close(fd)); (void)waitpid(child, &status, 0); } ATF_TP_ADD_TCS(tp) { ATF_TP_ADD_TC(tp, fifo); return atf_no_error(); }
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