1 /* 2 * Copyright (c) 2024 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 * 28 */ 29 30 #include <darwintest.h> 31 #include <darwintest_utils.h> 32 33 #include <stdlib.h> 34 35 T_GLOBAL_META( 36 T_META_NAMESPACE("xnu.vm"), 37 T_META_RADAR_COMPONENT_NAME("xnu"), 38 T_META_RADAR_COMPONENT_VERSION("VM"), 39 T_META_OWNER("jharmening"), 40 T_META_CHECK_LEAKS(false), 41 T_META_RUN_CONCURRENTLY(true)); 42 43 #define NUM_IOVS 7 44 45 T_DECL(vm_vector_upl, 46 "Test for vector UPLs", 47 T_META_TAG_VM_PREFERRED) 48 { 49 struct { 50 uint64_t base; 51 uint32_t len; 52 } w_iovs[NUM_IOVS]; 53 int64_t expected_bytes; 54 int w, w_idx; 55 56 T_SETUPBEGIN; 57 expected_bytes = 0; 58 for (w = 0; w < NUM_IOVS; w++) { 59 w_iovs[w].len = (uint32_t) ((w + 1) * (int)PAGE_SIZE); 60 void *iov_base; 61 T_QUIET; T_ASSERT_POSIX_SUCCESS(posix_memalign(&iov_base, PAGE_SIZE, w_iovs[w].len), "alloc(w_iov_base[%d])", w); 62 memset(iov_base, 'a' + w, w_iovs[w].len); 63 w_iovs[w].base = (uint64_t)iov_base; 64 expected_bytes += w_iovs[w].len; 65 } 66 T_SETUPEND; 67 68 struct { 69 uint64_t iov; 70 uint16_t iovcnt; 71 } arg; 72 73 arg.iov = (uint64_t) &w_iovs[0]; 74 arg.iovcnt = NUM_IOVS; 75 76 int64_t addr = (int64_t)&arg; 77 int64_t result = 0; 78 size_t s = sizeof(result); 79 T_ASSERT_POSIX_SUCCESS(sysctlbyname("debug.test.vm_vector_upl", &result, &s, &addr, sizeof(addr)), 80 "sysctlbyname(debug.test.vm_vector_upl)"); 81 82 T_EXPECT_EQ_LLONG(result, expected_bytes, "sysctl output"); 83 84 w = 0; 85 w_idx = 0; 86 87 /* Validate that the kernel sysctl handler mapped and mutated the page contents as expected. */ 88 for (w = 0; w < NUM_IOVS; w++) { 89 char *iov_base = (char*)w_iovs[w].base; 90 for (w_idx = 0; w_idx < w_iovs[w].len; w_idx++) { 91 T_QUIET; T_ASSERT_EQ(iov_base[w_idx], 'a' + w + 1, 92 "w_iovs[%d].iov_base[%d]='%c' == '%c'", 93 w, w_idx, (unsigned char)iov_base[w_idx], (unsigned char)('a' + w + 1)); 94 } 95 } 96 97 T_PASS("%s", __FUNCTION__); 98 } 99