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Apply the following automated changes to try to eliminate no-longer-needed sys/cdefs.h includes as well as now-empty blank lines in a row. Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/ Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/ Remove /\n+#if.*\n#endif.*\n+/ Remove /^#if.*\n#endif.*\n/ Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/ Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/ Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/ Sponsored by: Netflix
431 lines
12 KiB
C
431 lines
12 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2020 Jan Kokemüller
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/event.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <poll.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <unistd.h>
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#include <atf-c.h>
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ATF_TC_WITHOUT_HEAD(fifo_kqueue__writes);
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ATF_TC_BODY(fifo_kqueue__writes, tc)
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{
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int p[2] = { -1, -1 };
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ATF_REQUIRE(mkfifo("testfifo", 0600) == 0);
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ATF_REQUIRE((p[0] = open("testfifo",
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O_RDONLY | O_CLOEXEC | O_NONBLOCK)) >= 0);
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ATF_REQUIRE((p[1] = open("testfifo",
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O_WRONLY | O_CLOEXEC | O_NONBLOCK)) >= 0);
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int kq = kqueue();
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ATF_REQUIRE(kq >= 0);
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struct kevent kev[32];
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EV_SET(&kev[0], p[1], EVFILT_WRITE, EV_ADD | EV_CLEAR, 0, 0, 0);
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EV_SET(&kev[1], p[1], EVFILT_READ, EV_ADD | EV_CLEAR, 0, 0, 0);
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ATF_REQUIRE(kevent(kq, kev, 2, NULL, 0, NULL) == 0);
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/* A new writer should immediately get a EVFILT_WRITE event. */
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev),
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&(struct timespec) { 0, 0 }) == 1);
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ATF_REQUIRE(kev[0].ident == (uintptr_t)p[1]);
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ATF_REQUIRE(kev[0].filter == EVFILT_WRITE);
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ATF_REQUIRE(kev[0].flags == EV_CLEAR);
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ATF_REQUIRE(kev[0].fflags == 0);
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ATF_REQUIRE(kev[0].data == 16384);
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ATF_REQUIRE(kev[0].udata == 0);
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/* Filling up the pipe should make the EVFILT_WRITE disappear. */
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char c = 0;
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ssize_t r;
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while ((r = write(p[1], &c, 1)) == 1) {
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}
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ATF_REQUIRE(r < 0);
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ATF_REQUIRE(errno == EAGAIN || errno == EWOULDBLOCK);
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev),
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&(struct timespec) { 0, 0 }) == 0);
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/* Reading (PIPE_BUF - 1) bytes will not trigger a EVFILT_WRITE yet. */
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for (int i = 0; i < PIPE_BUF - 1; ++i) {
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ATF_REQUIRE(read(p[0], &c, 1) == 1);
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}
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev),
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&(struct timespec) { 0, 0 }) == 0);
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/* Reading one additional byte triggers the EVFILT_WRITE. */
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ATF_REQUIRE(read(p[0], &c, 1) == 1);
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev),
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&(struct timespec) { 0, 0 }) == 1);
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ATF_REQUIRE(kev[0].ident == (uintptr_t)p[1]);
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ATF_REQUIRE(kev[0].filter == EVFILT_WRITE);
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ATF_REQUIRE(kev[0].flags == EV_CLEAR);
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ATF_REQUIRE(kev[0].fflags == 0);
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ATF_REQUIRE(kev[0].data == PIPE_BUF);
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ATF_REQUIRE(kev[0].udata == 0);
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/*
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* Reading another byte triggers the EVFILT_WRITE again with a changed
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* 'data' field.
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*/
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ATF_REQUIRE(read(p[0], &c, 1) == 1);
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev),
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&(struct timespec) { 0, 0 }) == 1);
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ATF_REQUIRE(kev[0].ident == (uintptr_t)p[1]);
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ATF_REQUIRE(kev[0].filter == EVFILT_WRITE);
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ATF_REQUIRE(kev[0].flags == EV_CLEAR);
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ATF_REQUIRE(kev[0].fflags == 0);
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ATF_REQUIRE(kev[0].data == PIPE_BUF + 1);
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ATF_REQUIRE(kev[0].udata == 0);
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/*
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* Closing the read end should make a EV_EOF appear but leave the 'data'
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* field unchanged.
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*/
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ATF_REQUIRE(close(p[0]) == 0);
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev), NULL) == 1);
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ATF_REQUIRE(kev[0].ident == (uintptr_t)p[1]);
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ATF_REQUIRE(kev[0].filter == EVFILT_WRITE);
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ATF_REQUIRE(kev[0].flags == (EV_CLEAR | EV_EOF));
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ATF_REQUIRE(kev[0].fflags == 0);
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ATF_REQUIRE(kev[0].data == PIPE_BUF + 1);
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ATF_REQUIRE(kev[0].udata == 0);
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ATF_REQUIRE(close(kq) == 0);
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ATF_REQUIRE(close(p[1]) == 0);
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}
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ATF_TC_WITHOUT_HEAD(fifo_kqueue__connecting_reader);
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ATF_TC_BODY(fifo_kqueue__connecting_reader, tc)
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{
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int p[2] = { -1, -1 };
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ATF_REQUIRE(mkfifo("testfifo", 0600) == 0);
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ATF_REQUIRE((p[0] = open("testfifo",
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O_RDONLY | O_CLOEXEC | O_NONBLOCK)) >= 0);
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ATF_REQUIRE((p[1] = open("testfifo",
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O_WRONLY | O_CLOEXEC | O_NONBLOCK)) >= 0);
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int kq = kqueue();
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ATF_REQUIRE(kq >= 0);
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struct kevent kev[32];
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EV_SET(&kev[0], p[1], EVFILT_WRITE, EV_ADD | EV_CLEAR, 0, 0, 0);
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EV_SET(&kev[1], p[1], EVFILT_READ, EV_ADD | EV_CLEAR, 0, 0, 0);
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ATF_REQUIRE(kevent(kq, kev, 2, NULL, 0, NULL) == 0);
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/* A new writer should immediately get a EVFILT_WRITE event. */
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev),
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&(struct timespec) { 0, 0 }) == 1);
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ATF_REQUIRE(kev[0].ident == (uintptr_t)p[1]);
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ATF_REQUIRE(kev[0].filter == EVFILT_WRITE);
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev),
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&(struct timespec) { 0, 0 }) == 0);
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/*
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* Filling the pipe, reading (PIPE_BUF + 1) bytes, then closing the
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* read end leads to a EVFILT_WRITE with EV_EOF set.
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*/
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char c = 0;
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ssize_t r;
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while ((r = write(p[1], &c, 1)) == 1) {
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}
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ATF_REQUIRE(r < 0);
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ATF_REQUIRE(errno == EAGAIN || errno == EWOULDBLOCK);
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for (int i = 0; i < PIPE_BUF + 1; ++i) {
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ATF_REQUIRE(read(p[0], &c, 1) == 1);
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}
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ATF_REQUIRE(close(p[0]) == 0);
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev), NULL) == 1);
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ATF_REQUIRE(kev[0].filter == EVFILT_WRITE);
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ATF_REQUIRE((kev[0].flags & EV_EOF) != 0);
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev),
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&(struct timespec) { 0, 0 }) == 0);
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/* Opening the reader again must trigger the EVFILT_WRITE. */
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ATF_REQUIRE((p[0] = open("testfifo",
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O_RDONLY | O_CLOEXEC | O_NONBLOCK)) >= 0);
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r = kevent(kq, NULL, 0, kev, nitems(kev), &(struct timespec) { 1, 0 });
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ATF_REQUIRE(r == 1);
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ATF_REQUIRE(kev[0].ident == (uintptr_t)p[1]);
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ATF_REQUIRE(kev[0].filter == EVFILT_WRITE);
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ATF_REQUIRE(kev[0].flags == EV_CLEAR);
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ATF_REQUIRE(kev[0].fflags == 0);
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ATF_REQUIRE(kev[0].data == PIPE_BUF + 1);
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ATF_REQUIRE(kev[0].udata == 0);
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev),
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&(struct timespec) { 0, 0 }) == 0);
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ATF_REQUIRE(close(kq) == 0);
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ATF_REQUIRE(close(p[0]) == 0);
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ATF_REQUIRE(close(p[1]) == 0);
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}
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/* Check that EVFILT_READ behaves sensibly on a FIFO reader. */
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ATF_TC_WITHOUT_HEAD(fifo_kqueue__reads);
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ATF_TC_BODY(fifo_kqueue__reads, tc)
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{
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struct kevent kev[32];
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ssize_t bytes, i, n;
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int kq, p[2];
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char c;
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ATF_REQUIRE(mkfifo("testfifo", 0600) == 0);
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ATF_REQUIRE((p[0] = open("testfifo",
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O_RDONLY | O_CLOEXEC | O_NONBLOCK)) >= 0);
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ATF_REQUIRE((p[1] = open("testfifo",
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O_WRONLY | O_CLOEXEC | O_NONBLOCK)) >= 0);
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bytes = 0;
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c = 0;
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while ((n = write(p[1], &c, 1)) == 1)
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bytes++;
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ATF_REQUIRE(n < 0);
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ATF_REQUIRE(errno == EAGAIN || errno == EWOULDBLOCK);
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ATF_REQUIRE(bytes > 1);
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for (i = 0; i < bytes / 2; i++)
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ATF_REQUIRE(read(p[0], &c, 1) == 1);
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bytes -= i;
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kq = kqueue();
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ATF_REQUIRE(kq >= 0);
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EV_SET(&kev[0], p[0], EVFILT_READ, EV_ADD | EV_CLEAR, 0, 0, 0);
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ATF_REQUIRE(kevent(kq, kev, 1, NULL, 0, NULL) == 0);
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev),
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&(struct timespec){ 0, 0 }) == 1);
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ATF_REQUIRE(kev[0].ident == (uintptr_t)p[0]);
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ATF_REQUIRE(kev[0].filter == EVFILT_READ);
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ATF_REQUIRE(kev[0].flags == EV_CLEAR);
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ATF_REQUIRE(kev[0].fflags == 0);
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ATF_REQUIRE(kev[0].data == bytes);
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ATF_REQUIRE(kev[0].udata == 0);
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while (bytes-- > 0)
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ATF_REQUIRE(read(p[0], &c, 1) == 1);
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n = read(p[0], &c, 1);
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ATF_REQUIRE(n < 0);
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ATF_REQUIRE(errno == EAGAIN || errno == EWOULDBLOCK);
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev),
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&(struct timespec) { 0, 0 }) == 0);
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ATF_REQUIRE(close(kq) == 0);
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ATF_REQUIRE(close(p[0]) == 0);
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ATF_REQUIRE(close(p[1]) == 0);
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}
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ATF_TC_WITHOUT_HEAD(fifo_kqueue__read_eof_wakeups);
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ATF_TC_BODY(fifo_kqueue__read_eof_wakeups, tc)
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{
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int p[2] = { -1, -1 };
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ATF_REQUIRE(mkfifo("testfifo", 0600) == 0);
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ATF_REQUIRE((p[0] = open("testfifo",
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O_RDONLY | O_CLOEXEC | O_NONBLOCK)) >= 0);
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ATF_REQUIRE((p[1] = open("testfifo",
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O_WRONLY | O_CLOEXEC | O_NONBLOCK)) >= 0);
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int kq = kqueue();
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ATF_REQUIRE(kq >= 0);
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struct kevent kev[32];
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EV_SET(&kev[0], p[0], EVFILT_READ, EV_ADD | EV_CLEAR, 0, 0, 0);
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ATF_REQUIRE(kevent(kq, kev, 1, NULL, 0, NULL) == 0);
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev),
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&(struct timespec) { 0, 0 }) == 0);
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/*
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* Closing the writer must trigger a EVFILT_READ edge with EV_EOF set.
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*/
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ATF_REQUIRE(close(p[1]) == 0);
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev),
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&(struct timespec) { 0, 0 }) == 1);
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ATF_REQUIRE(kev[0].ident == (uintptr_t)p[0]);
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ATF_REQUIRE(kev[0].filter == EVFILT_READ);
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ATF_REQUIRE(kev[0].flags == (EV_EOF | EV_CLEAR));
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ATF_REQUIRE(kev[0].fflags == 0);
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ATF_REQUIRE(kev[0].data == 0);
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ATF_REQUIRE(kev[0].udata == 0);
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/*
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* Trying to read from a closed pipe should not trigger EVFILT_READ
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* edges.
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*/
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char c;
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ATF_REQUIRE(read(p[0], &c, 1) == 0);
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev),
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&(struct timespec) { 0, 0 }) == 0);
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ATF_REQUIRE(close(kq) == 0);
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ATF_REQUIRE(close(p[0]) == 0);
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}
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ATF_TC_WITHOUT_HEAD(fifo_kqueue__read_eof_state_when_reconnecting);
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ATF_TC_BODY(fifo_kqueue__read_eof_state_when_reconnecting, tc)
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{
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int p[2] = { -1, -1 };
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ATF_REQUIRE(mkfifo("testfifo", 0600) == 0);
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ATF_REQUIRE((p[0] = open("testfifo",
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O_RDONLY | O_CLOEXEC | O_NONBLOCK)) >= 0);
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ATF_REQUIRE((p[1] = open("testfifo",
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O_WRONLY | O_CLOEXEC | O_NONBLOCK)) >= 0);
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int kq = kqueue();
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ATF_REQUIRE(kq >= 0);
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struct kevent kev[32];
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EV_SET(&kev[0], p[0], EVFILT_READ, EV_ADD | EV_CLEAR, 0, 0, 0);
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ATF_REQUIRE(kevent(kq, kev, 1, NULL, 0, NULL) == 0);
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev),
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&(struct timespec) { 0, 0 }) == 0);
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/*
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* Closing the writer must trigger a EVFILT_READ edge with EV_EOF set.
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*/
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ATF_REQUIRE(close(p[1]) == 0);
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev),
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&(struct timespec) { 0, 0 }) == 1);
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ATF_REQUIRE(kev[0].ident == (uintptr_t)p[0]);
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ATF_REQUIRE(kev[0].filter == EVFILT_READ);
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ATF_REQUIRE(kev[0].flags == (EV_EOF | EV_CLEAR));
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ATF_REQUIRE(kev[0].fflags == 0);
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ATF_REQUIRE(kev[0].data == 0);
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ATF_REQUIRE(kev[0].udata == 0);
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/* A new reader shouldn't see the EOF flag. */
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{
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int new_reader;
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ATF_REQUIRE((new_reader = open("testfifo",
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O_RDONLY | O_CLOEXEC | O_NONBLOCK)) >= 0);
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int new_kq = kqueue();
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ATF_REQUIRE(new_kq >= 0);
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struct kevent new_kev[32];
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EV_SET(&new_kev[0], new_reader, EVFILT_READ, EV_ADD | EV_CLEAR,
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0, 0, 0);
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ATF_REQUIRE(kevent(new_kq, new_kev, 1, NULL, 0, NULL) == 0);
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ATF_REQUIRE(kevent(new_kq, NULL, 0, new_kev, nitems(new_kev),
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&(struct timespec) { 0, 0 }) == 0);
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ATF_REQUIRE(close(new_kq) == 0);
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ATF_REQUIRE(close(new_reader) == 0);
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}
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/*
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* Simply reopening the writer does not trigger the EVFILT_READ again --
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* EV_EOF should be cleared, but there is no data yet so the filter
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* does not trigger.
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*/
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ATF_REQUIRE((p[1] = open("testfifo",
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O_WRONLY | O_CLOEXEC | O_NONBLOCK)) >= 0);
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev),
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&(struct timespec) { 0, 0 }) == 0);
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/* Writing a byte should trigger a EVFILT_READ. */
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char c = 0;
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ATF_REQUIRE(write(p[1], &c, 1) == 1);
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ATF_REQUIRE(kevent(kq, NULL, 0, kev, nitems(kev),
|
|
&(struct timespec) { 0, 0 }) == 1);
|
|
ATF_REQUIRE(kev[0].ident == (uintptr_t)p[0]);
|
|
ATF_REQUIRE(kev[0].filter == EVFILT_READ);
|
|
ATF_REQUIRE(kev[0].flags == EV_CLEAR);
|
|
ATF_REQUIRE(kev[0].fflags == 0);
|
|
ATF_REQUIRE(kev[0].data == 1);
|
|
ATF_REQUIRE(kev[0].udata == 0);
|
|
|
|
ATF_REQUIRE(close(kq) == 0);
|
|
ATF_REQUIRE(close(p[0]) == 0);
|
|
ATF_REQUIRE(close(p[1]) == 0);
|
|
}
|
|
|
|
ATF_TP_ADD_TCS(tp)
|
|
{
|
|
ATF_TP_ADD_TC(tp, fifo_kqueue__writes);
|
|
ATF_TP_ADD_TC(tp, fifo_kqueue__connecting_reader);
|
|
ATF_TP_ADD_TC(tp, fifo_kqueue__reads);
|
|
ATF_TP_ADD_TC(tp, fifo_kqueue__read_eof_wakeups);
|
|
ATF_TP_ADD_TC(tp, fifo_kqueue__read_eof_state_when_reconnecting);
|
|
|
|
return atf_no_error();
|
|
}
|