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Issue 2506813002: Remove ipc/test_util_mac.*. (Closed)
Patch Set: Created 4 years, 1 month ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "ipc/test_util_mac.h"
6
7 #include <mach/mach_vm.h>
8 #include <servers/bootstrap.h>
9 #include <stddef.h>
10
11 #include "base/mac/mach_logging.h"
12 #include "base/mac/scoped_mach_port.h"
13 #include "base/rand_util.h"
14 #include "base/strings/stringprintf.h"
15
16 namespace {
17
18 // Structs used to pass a Mach port over mach_msg().
19 struct MachSendPortMessage {
20 mach_msg_header_t header;
21 mach_msg_body_t body;
22 mach_msg_port_descriptor_t data;
23 };
24
25 struct MachReceivePortMessage : public MachSendPortMessage {
26 mach_msg_trailer_t trailer;
27 };
28
29 } // namespace
30
31 namespace IPC {
32
33 std::string CreateRandomServiceName() {
34 return base::StringPrintf("TestUtilMac.%llu", base::RandUint64());
35 }
36
37 base::mac::ScopedMachReceiveRight BecomeMachServer(const char* service_name) {
38 mach_port_t port;
39 kern_return_t kr = bootstrap_check_in(bootstrap_port, service_name, &port);
40 MACH_CHECK(kr == KERN_SUCCESS, kr) << "BecomeMachServer ";
41 return base::mac::ScopedMachReceiveRight(port);
42 }
43
44 base::mac::ScopedMachSendRight LookupServer(const char* service_name) {
45 mach_port_t server_port;
46 kern_return_t kr =
47 bootstrap_look_up(bootstrap_port, service_name, &server_port);
48 MACH_CHECK(kr == KERN_SUCCESS, kr) << "LookupServer";
49 return base::mac::ScopedMachSendRight(server_port);
50 }
51
52 base::mac::ScopedMachReceiveRight MakeReceivingPort() {
53 mach_port_t client_port;
54 kern_return_t kr = mach_port_allocate(mach_task_self(),
55 MACH_PORT_RIGHT_RECEIVE, &client_port);
56 MACH_CHECK(kr == KERN_SUCCESS, kr) << "MakeReceivingPort";
57 return base::mac::ScopedMachReceiveRight(client_port);
58 }
59
60 base::mac::ScopedMachSendRight ReceiveMachPort(mach_port_t port_to_listen_on) {
61 MachReceivePortMessage recv_msg;
62 mach_msg_header_t* recv_hdr = &recv_msg.header;
63 recv_hdr->msgh_local_port = port_to_listen_on;
64 recv_hdr->msgh_size = sizeof(recv_msg);
65 kern_return_t kr =
66 mach_msg(recv_hdr, MACH_RCV_MSG, 0, recv_hdr->msgh_size,
67 port_to_listen_on, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
68 MACH_CHECK(kr == KERN_SUCCESS, kr) << "ReceiveMachPort";
69 mach_port_t other_task_port = recv_msg.data.name;
70 return base::mac::ScopedMachSendRight(other_task_port);
71 }
72
73 // Passes a copy of the send right of |port_to_send| to |receiving_port|.
74 void SendMachPort(mach_port_t receiving_port,
75 mach_port_t port_to_send,
76 int disposition) {
77 MachSendPortMessage send_msg;
78 send_msg.header.msgh_bits =
79 MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, 0) | MACH_MSGH_BITS_COMPLEX;
80 send_msg.header.msgh_size = sizeof(send_msg);
81 send_msg.header.msgh_remote_port = receiving_port;
82 send_msg.header.msgh_local_port = MACH_PORT_NULL;
83 send_msg.header.msgh_reserved = 0;
84 send_msg.header.msgh_id = 0;
85 send_msg.body.msgh_descriptor_count = 1;
86 send_msg.data.name = port_to_send;
87 send_msg.data.disposition = disposition;
88 send_msg.data.type = MACH_MSG_PORT_DESCRIPTOR;
89 int kr = mach_msg(&send_msg.header, MACH_SEND_MSG, send_msg.header.msgh_size,
90 0, MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
91 MACH_CHECK(kr == KERN_SUCCESS, kr) << "SendMachPort";
92 }
93
94 mach_msg_type_number_t GetActiveNameCount() {
95 mach_port_name_array_t name_array;
96 mach_msg_type_number_t names_count;
97 mach_port_type_array_t type_array;
98 mach_msg_type_number_t types_count;
99 kern_return_t kr = mach_port_names(mach_task_self(), &name_array,
100 &names_count, &type_array, &types_count);
101 MACH_CHECK(kr == KERN_SUCCESS, kr) << "GetActiveNameCount";
102 return names_count;
103 }
104
105 mach_port_urefs_t GetMachRefCount(mach_port_name_t name,
106 mach_port_right_t right) {
107 mach_port_urefs_t ref_count;
108 kern_return_t kr = mach_port_get_refs(mach_task_self(), name,
109 MACH_PORT_RIGHT_SEND, &ref_count);
110 MACH_CHECK(kr == KERN_SUCCESS, kr) << "GetRefCount";
111 return ref_count;
112 }
113
114 void IncrementMachRefCount(mach_port_name_t name, mach_port_right_t right) {
115 kern_return_t kr = mach_port_mod_refs(mach_task_self(), name, right, 1);
116 MACH_CHECK(kr == KERN_SUCCESS, kr) << "GetRefCount";
117 }
118
119 bool GetMachProtections(void* address, size_t size, int* current, int* max) {
120 vm_region_info_t region_info;
121 mach_vm_address_t mem_address = reinterpret_cast<mach_vm_address_t>(address);
122 mach_vm_size_t mem_size = size;
123 vm_region_basic_info_64 basic_info;
124
125 region_info = reinterpret_cast<vm_region_recurse_info_t>(&basic_info);
126 vm_region_flavor_t flavor = VM_REGION_BASIC_INFO_64;
127 memory_object_name_t memory_object;
128 mach_msg_type_number_t count = VM_REGION_BASIC_INFO_COUNT_64;
129
130 kern_return_t kr =
131 mach_vm_region(mach_task_self(), &mem_address, &mem_size, flavor,
132 region_info, &count, &memory_object);
133 if (kr != KERN_SUCCESS) {
134 MACH_LOG(ERROR, kr) << "Failed to get region info.";
135 return false;
136 }
137
138 *current = basic_info.protection;
139 *max = basic_info.max_protection;
140 return true;
141 }
142
143 } // namespace IPC
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