1*43a90889SApple OSS Distributions /* 2*43a90889SApple OSS Distributions * Copyright (c) 2019 Apple Computer, Inc. All rights reserved. 3*43a90889SApple OSS Distributions * 4*43a90889SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*43a90889SApple OSS Distributions * 6*43a90889SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*43a90889SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*43a90889SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*43a90889SApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*43a90889SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*43a90889SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*43a90889SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*43a90889SApple OSS Distributions * terms of an Apple operating system software license agreement. 14*43a90889SApple OSS Distributions * 15*43a90889SApple OSS Distributions * Please obtain a copy of the License at 16*43a90889SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*43a90889SApple OSS Distributions * 18*43a90889SApple OSS Distributions * The Original Code and all software distributed under the License are 19*43a90889SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*43a90889SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*43a90889SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*43a90889SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*43a90889SApple OSS Distributions * Please see the License for the specific language governing rights and 24*43a90889SApple OSS Distributions * limitations under the License. 25*43a90889SApple OSS Distributions * 26*43a90889SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*43a90889SApple OSS Distributions */ 28*43a90889SApple OSS Distributions 29*43a90889SApple OSS Distributions #include <darwintest.h> 30*43a90889SApple OSS Distributions #include <darwintest_multiprocess.h> 31*43a90889SApple OSS Distributions #include <stdio.h> 32*43a90889SApple OSS Distributions #include <unistd.h> 33*43a90889SApple OSS Distributions #include <sys/wait.h> 34*43a90889SApple OSS Distributions #include <pthread.h> 35*43a90889SApple OSS Distributions #include <stdlib.h> 36*43a90889SApple OSS Distributions #include <signal.h> 37*43a90889SApple OSS Distributions #include <dispatch/dispatch.h> 38*43a90889SApple OSS Distributions #include <fcntl.h> 39*43a90889SApple OSS Distributions #include <string.h> 40*43a90889SApple OSS Distributions #include <errno.h> 41*43a90889SApple OSS Distributions 42*43a90889SApple OSS Distributions T_GLOBAL_META(T_META_RADAR_COMPONENT_NAME("xnu"), 43*43a90889SApple OSS Distributions T_META_RADAR_COMPONENT_VERSION("kevent")); 44*43a90889SApple OSS Distributions 45*43a90889SApple OSS Distributions T_DECL(pipe_noblock_kevent, 46*43a90889SApple OSS Distributions "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") 47*43a90889SApple OSS Distributions { 48*43a90889SApple OSS Distributions int fd[2], write_fd; 49*43a90889SApple OSS Distributions dispatch_queue_t dq1 = dispatch_queue_create("com.apple.test.pipe_noblock_kevent.queue", DISPATCH_QUEUE_SERIAL); 50*43a90889SApple OSS Distributions 51*43a90889SApple OSS Distributions pipe(fd); 52*43a90889SApple OSS Distributions write_fd = fd[1]; 53*43a90889SApple OSS Distributions __block int iter = 1; 54*43a90889SApple OSS Distributions 55*43a90889SApple OSS Distributions /* Make sure the pipe is No block */ 56*43a90889SApple OSS Distributions fcntl(write_fd, F_SETFL, (O_NONBLOCK)); 57*43a90889SApple OSS Distributions 58*43a90889SApple OSS Distributions dispatch_source_t write_source = dispatch_source_create(DISPATCH_SOURCE_TYPE_WRITE, (uintptr_t)write_fd, 0, dq1); 59*43a90889SApple OSS Distributions dispatch_source_set_event_handler(write_source, ^{ 60*43a90889SApple OSS Distributions unsigned long length = dispatch_source_get_data(write_source); 61*43a90889SApple OSS Distributions 62*43a90889SApple OSS Distributions T_LOG("Iteration: %d, Length available: %lu\n", iter++, length); 63*43a90889SApple OSS Distributions 64*43a90889SApple OSS Distributions char buf[512] = "deadbeef"; 65*43a90889SApple OSS Distributions ssize_t rv = write(write_fd, buf, 512); 66*43a90889SApple OSS Distributions T_EXPECT_POSIX_SUCCESS(rv, "write success"); 67*43a90889SApple OSS Distributions if (rv < 0) { 68*43a90889SApple OSS Distributions T_FAIL("Write should have succeeded but failed with error %ld", rv); 69*43a90889SApple OSS Distributions T_END; 70*43a90889SApple OSS Distributions } 71*43a90889SApple OSS Distributions }); 72*43a90889SApple OSS Distributions 73*43a90889SApple OSS Distributions dispatch_resume(write_source); 74*43a90889SApple OSS Distributions 75*43a90889SApple OSS Distributions T_LOG("Arming a timer for 15 seconds to exit, assuming kevent will block before that"); 76*43a90889SApple OSS Distributions dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 15 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{ 77*43a90889SApple OSS Distributions T_LOG("PASS: Kevent blocked as expected in the EVFLT_WRITE"); 78*43a90889SApple OSS Distributions T_END; 79*43a90889SApple OSS Distributions }); 80*43a90889SApple OSS Distributions 81*43a90889SApple OSS Distributions dispatch_main(); 82*43a90889SApple OSS Distributions } 83