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Issue 853853002: win: Stub reorganization of MultiprocessExec (Closed) Base URL: https://chromium.googlesource.com/crashpad/crashpad@master
Patch Set: . Created 5 years, 11 months ago
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1 // Copyright 2014 The Crashpad Authors. All rights reserved. 1 // Copyright 2014 The Crashpad Authors. All rights reserved.
2 // 2 //
3 // Licensed under the Apache License, Version 2.0 (the "License"); 3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License. 4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at 5 // You may obtain a copy of the License at
6 // 6 //
7 // http://www.apache.org/licenses/LICENSE-2.0 7 // http://www.apache.org/licenses/LICENSE-2.0
8 // 8 //
9 // Unless required by applicable law or agreed to in writing, software 9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS, 10 // distributed under the License is distributed on an "AS IS" BASIS,
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65 } 65 }
66 66
67 void MultiprocessExec::MultiprocessChild() { 67 void MultiprocessExec::MultiprocessChild() {
68 // Make sure that stdin, stdout, and stderr are FDs 0, 1, and 2, respectively. 68 // Make sure that stdin, stdout, and stderr are FDs 0, 1, and 2, respectively.
69 // All FDs above this will be closed. 69 // All FDs above this will be closed.
70 static_assert(STDIN_FILENO == 0, "stdin must be fd 0"); 70 static_assert(STDIN_FILENO == 0, "stdin must be fd 0");
71 static_assert(STDOUT_FILENO == 1, "stdout must be fd 1"); 71 static_assert(STDOUT_FILENO == 1, "stdout must be fd 1");
72 static_assert(STDERR_FILENO == 2, "stderr must be fd 2"); 72 static_assert(STDERR_FILENO == 2, "stderr must be fd 2");
73 73
74 // Move the read pipe to stdin. 74 // Move the read pipe to stdin.
75 int read_fd = ReadPipeFD(); 75 int read_fd = ReadPipeHandle();
76 ASSERT_NE(read_fd, STDIN_FILENO); 76 ASSERT_NE(read_fd, STDIN_FILENO);
77 ASSERT_NE(read_fd, STDOUT_FILENO); 77 ASSERT_NE(read_fd, STDOUT_FILENO);
78 ASSERT_EQ(STDIN_FILENO, fileno(stdin)); 78 ASSERT_EQ(STDIN_FILENO, fileno(stdin));
79 79
80 int rv = fpurge(stdin); 80 int rv = fpurge(stdin);
81 ASSERT_EQ(0, rv) << ErrnoMessage("fpurge"); 81 ASSERT_EQ(0, rv) << ErrnoMessage("fpurge");
82 82
83 rv = HANDLE_EINTR(dup2(read_fd, STDIN_FILENO)); 83 rv = HANDLE_EINTR(dup2(read_fd, STDIN_FILENO));
84 ASSERT_EQ(STDIN_FILENO, rv) << ErrnoMessage("dup2"); 84 ASSERT_EQ(STDIN_FILENO, rv) << ErrnoMessage("dup2");
85 85
86 // Move the write pipe to stdout. 86 // Move the write pipe to stdout.
87 int write_fd = WritePipeFD(); 87 int write_fd = WritePipeHandle();
88 ASSERT_NE(write_fd, STDIN_FILENO); 88 ASSERT_NE(write_fd, STDIN_FILENO);
89 ASSERT_NE(write_fd, STDOUT_FILENO); 89 ASSERT_NE(write_fd, STDOUT_FILENO);
90 ASSERT_EQ(STDOUT_FILENO, fileno(stdout)); 90 ASSERT_EQ(STDOUT_FILENO, fileno(stdout));
91 91
92 // Make a copy of the original stdout file descriptor so that in case there’s 92 // Make a copy of the original stdout file descriptor so that in case there’s
93 // an execv() failure, the original stdout can be restored so that gtest 93 // an execv() failure, the original stdout can be restored so that gtest
94 // messages directed to stdout go to the right place. Mark it as 94 // messages directed to stdout go to the right place. Mark it as
95 // close-on-exec, so that the child won’t see it after a successful exec(), 95 // close-on-exec, so that the child won’t see it after a successful exec(),
96 // but it will still be available in this process after an unsuccessful 96 // but it will still be available in this process after an unsuccessful
97 // exec(). 97 // exec().
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131 IGNORE_EINTR(close(STDOUT_FILENO)); 131 IGNORE_EINTR(close(STDOUT_FILENO));
132 HANDLE_EINTR(dup2(dup_orig_stdout_fd, STDOUT_FILENO)); 132 HANDLE_EINTR(dup2(dup_orig_stdout_fd, STDOUT_FILENO));
133 IGNORE_EINTR(close(dup_orig_stdout_fd)); 133 IGNORE_EINTR(close(dup_orig_stdout_fd));
134 134
135 forbid_return.Disarm(); 135 forbid_return.Disarm();
136 FAIL() << ErrnoMessage("execv") << ": " << argv_[0]; 136 FAIL() << ErrnoMessage("execv") << ": " << argv_[0];
137 } 137 }
138 138
139 } // namespace test 139 } // namespace test
140 } // namespace crashpad 140 } // namespace crashpad
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