1 // Copyright (c) 2010, Google Inc.
2 // All rights reserved.
3 //
4 // Redistribution and use in source and binary forms, with or without
5 // modification, are permitted provided that the following conditions are
6 // met:
7 //
8 // * Redistributions of source code must retain the above copyright
9 // notice, this list of conditions and the following disclaimer.
10 // * Redistributions in binary form must reproduce the above
11 // copyright notice, this list of conditions and the following disclaimer
12 // in the documentation and/or other materials provided with the
13 // distribution.
14 // * Neither the name of Google Inc. nor the names of its
15 // contributors may be used to endorse or promote products derived from
16 // this software without specific prior written permission.
17 //
18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29
30 // Utility functions for spawning a helper process using a different
31 // CPU architecture.
32
33 #ifndef GOOGLE_BREAKPAD_CLIENT_MAC_TESTS_SPAWN_CHILD_PROCESS
34 #define GOOGLE_BREAKPAD_CLIENT_MAC_TESTS_SPAWN_CHILD_PROCESS
35
36 #include <AvailabilityMacros.h>
37 #ifndef MAC_OS_X_VERSION_10_6
38 #define MAC_OS_X_VERSION_10_6 1060
39 #endif
40 #include <crt_externs.h>
41 #include <mach-o/dyld.h>
42 #if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_6
43 #include <spawn.h>
44 #endif
45
46 #include <string>
47 #include <vector>
48
49 #include "google_breakpad/common/minidump_format.h"
50
51 namespace google_breakpad_test {
52
53 using std::string;
54 using std::vector;
55
56 const MDCPUArchitecture kNativeArchitecture =
57 #if defined(__i386__)
58 MD_CPU_ARCHITECTURE_X86
59 #elif defined(__x86_64__)
60 MD_CPU_ARCHITECTURE_AMD64
61 #elif defined(__ppc__) || defined(__ppc64__)
62 MD_CPU_ARCHITECTURE_PPC
63 #else
64 #error "This file has not been ported to this CPU architecture."
65 #endif
66 ;
67
68 const uint32_t kNativeContext =
69 #if defined(__i386__)
70 MD_CONTEXT_X86
71 #elif defined(__x86_64__)
72 MD_CONTEXT_AMD64
73 #elif defined(__ppc__) || defined(__ppc64__)
74 MD_CONTEXT_PPC
75 #else
76 #error "This file has not been ported to this CPU architecture."
77 #endif
78 ;
79
GetExecutablePath()80 string GetExecutablePath() {
81 char self_path[PATH_MAX];
82 uint32_t size = sizeof(self_path);
83 if (_NSGetExecutablePath(self_path, &size) != 0)
84 return "";
85 return self_path;
86 }
87
GetHelperPath()88 string GetHelperPath() {
89 string helper_path(GetExecutablePath());
90 size_t pos = helper_path.rfind('/');
91 if (pos == string::npos)
92 return "";
93
94 helper_path.erase(pos + 1);
95 helper_path += "minidump_generator_test_helper";
96 return helper_path;
97 }
98
99 #if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_6
100
spawn_child_process(const char ** argv)101 pid_t spawn_child_process(const char** argv) {
102 posix_spawnattr_t spawnattr;
103 if (posix_spawnattr_init(&spawnattr) != 0)
104 return (pid_t)-1;
105
106 cpu_type_t pref_cpu_types[2] = {
107 #if defined(__x86_64__)
108 CPU_TYPE_X86,
109 #elif defined(__i386__)
110 CPU_TYPE_X86_64,
111 #endif
112 CPU_TYPE_ANY
113 };
114
115 // Set spawn attributes.
116 size_t attr_count = sizeof(pref_cpu_types) / sizeof(pref_cpu_types[0]);
117 size_t attr_ocount = 0;
118 if (posix_spawnattr_setbinpref_np(&spawnattr,
119 attr_count,
120 pref_cpu_types,
121 &attr_ocount) != 0 ||
122 attr_ocount != attr_count) {
123 posix_spawnattr_destroy(&spawnattr);
124 return (pid_t)-1;
125 }
126
127 // Create an argv array.
128 vector<char*> argv_v;
129 while (*argv) {
130 argv_v.push_back(strdup(*argv));
131 argv++;
132 }
133 argv_v.push_back(NULL);
134 pid_t new_pid = 0;
135 int result = posix_spawnp(&new_pid, argv_v[0], NULL, &spawnattr,
136 &argv_v[0], *_NSGetEnviron());
137 posix_spawnattr_destroy(&spawnattr);
138
139 for (unsigned i = 0; i < argv_v.size(); i++) {
140 free(argv_v[i]);
141 }
142
143 return result == 0 ? new_pid : -1;
144 }
145 #endif
146
147 } // namespace google_breakpad_test
148
149 #endif // GOOGLE_BREAKPAD_CLIENT_MAC_TESTS_SPAWN_CHILD_PROCESS
150