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
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7//
8//     * Redistributions of source code must retain the above copyright
9// notice, this list of conditions and the following disclaimer.
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12// in the documentation and/or other materials provided with the
13// distribution.
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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
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22// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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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
51namespace google_breakpad_test {
52
53using std::string;
54using std::vector;
55
56const 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
68const 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
80string 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
88string 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
101pid_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