mirror of
https://github.com/apple-oss-distributions/xnu.git
synced 2026-01-11 20:06:33 +00:00
82 lines
2.9 KiB
C
82 lines
2.9 KiB
C
/*
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* Copyright (c) 2019 Apple Computer, Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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#include <darwintest.h>
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#include <darwintest_multiprocess.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <dispatch/dispatch.h>
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#include <fcntl.h>
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#include <string.h>
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#include <errno.h>
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T_GLOBAL_META(T_META_RADAR_COMPONENT_NAME("xnu"),
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T_META_RADAR_COMPONENT_VERSION("kevent"));
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T_DECL(pipe_noblock_kevent,
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"Set a pipe and no block and setup EVFLT_WRITE kevent on it and make sure it does not fire when the pipe is full")
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{
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int fd[2], write_fd;
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dispatch_queue_t dq1 = dispatch_queue_create("com.apple.test.pipe_noblock_kevent.queue", DISPATCH_QUEUE_SERIAL);
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pipe(fd);
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write_fd = fd[1];
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__block int iter = 1;
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/* Make sure the pipe is No block */
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fcntl(write_fd, F_SETFL, (O_NONBLOCK));
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dispatch_source_t write_source = dispatch_source_create(DISPATCH_SOURCE_TYPE_WRITE, (uintptr_t)write_fd, 0, dq1);
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dispatch_source_set_event_handler(write_source, ^{
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unsigned long length = dispatch_source_get_data(write_source);
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T_LOG("Iteration: %d, Length available: %lu\n", iter++, length);
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char buf[512] = "deadbeef";
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ssize_t rv = write(write_fd, buf, 512);
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T_EXPECT_POSIX_SUCCESS(rv, "write success");
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if (rv < 0) {
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T_FAIL("Write should have succeeded but failed with error %ld", rv);
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T_END;
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}
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});
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dispatch_resume(write_source);
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T_LOG("Arming a timer for 15 seconds to exit, assuming kevent will block before that");
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dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 15 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
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T_LOG("PASS: Kevent blocked as expected in the EVFLT_WRITE");
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T_END;
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});
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dispatch_main();
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}
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