1*043036a2SApple OSS Distributions /* 2*043036a2SApple OSS Distributions * Copyright (c) 2024 Apple Inc. All rights reserved. 3*043036a2SApple OSS Distributions * 4*043036a2SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*043036a2SApple OSS Distributions * 6*043036a2SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*043036a2SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*043036a2SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*043036a2SApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*043036a2SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*043036a2SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*043036a2SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*043036a2SApple OSS Distributions * terms of an Apple operating system software license agreement. 14*043036a2SApple OSS Distributions * 15*043036a2SApple OSS Distributions * Please obtain a copy of the License at 16*043036a2SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*043036a2SApple OSS Distributions * 18*043036a2SApple OSS Distributions * The Original Code and all software distributed under the License are 19*043036a2SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*043036a2SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*043036a2SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*043036a2SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*043036a2SApple OSS Distributions * Please see the License for the specific language governing rights and 24*043036a2SApple OSS Distributions * limitations under the License. 25*043036a2SApple OSS Distributions * 26*043036a2SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*043036a2SApple OSS Distributions */ 28*043036a2SApple OSS Distributions 29*043036a2SApple OSS Distributions #include <darwintest.h> 30*043036a2SApple OSS Distributions #include <sys/wait.h> 31*043036a2SApple OSS Distributions #include <spawn.h> 32*043036a2SApple OSS Distributions 33*043036a2SApple OSS Distributions T_GLOBAL_META( 34*043036a2SApple OSS Distributions T_META_NAMESPACE("xnu.sysctl"), 35*043036a2SApple OSS Distributions T_META_RADAR_COMPONENT_NAME("xnu"), 36*043036a2SApple OSS Distributions T_META_RADAR_COMPONENT_VERSION("sysctl"), 37*043036a2SApple OSS Distributions T_META_OWNER("p_tennen"), 38*043036a2SApple OSS Distributions T_META_TAG_VM_PREFERRED, 39*043036a2SApple OSS Distributions T_META_RUN_CONCURRENTLY(true) 40*043036a2SApple OSS Distributions ); 41*043036a2SApple OSS Distributions 42*043036a2SApple OSS Distributions T_DECL(tree_walk, "Ensure we can walk a contrived sysctl tree") 43*043036a2SApple OSS Distributions { 44*043036a2SApple OSS Distributions // rdar://138698424 45*043036a2SApple OSS Distributions // Given a particular sysctl node tree (defined in-kernel) 46*043036a2SApple OSS Distributions // When we invoke the sysctl machinery to walk this tree 47*043036a2SApple OSS Distributions // (By specifying a partial path to the tree to the `sysctl` CLI tool - 48*043036a2SApple OSS Distributions // trying to use sysctlbyname won't trigger the walk we're interested in.) 49*043036a2SApple OSS Distributions char *args[] = { "/usr/sbin/sysctl", "debug.test.sysctl_node_test", NULL }; 50*043036a2SApple OSS Distributions int child_pid; 51*043036a2SApple OSS Distributions T_ASSERT_POSIX_ZERO(posix_spawn(&child_pid, args[0], NULL, NULL, args, NULL), "posix_spawn() sysctl"); 52*043036a2SApple OSS Distributions // And we give the child a chance to execute 53*043036a2SApple OSS Distributions int status = 0; 54*043036a2SApple OSS Distributions T_ASSERT_POSIX_SUCCESS(waitpid(child_pid, &status, 0), "waitpid"); 55*043036a2SApple OSS Distributions // Then the machine does not panic :} 56*043036a2SApple OSS Distributions T_PASS("The machine didn't panic, therefore our sysctl machinery can handle walking our node tree"); 57*043036a2SApple OSS Distributions } 58