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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "sandbox/linux/services/syscall_wrappers.h" | 5 #include "sandbox/linux/services/syscall_wrappers.h" |
6 | 6 |
7 #include <sys/syscall.h> | 7 #include <sys/syscall.h> |
8 #include <sys/types.h> | 8 #include <sys/types.h> |
9 #include <sys/wait.h> | 9 #include <sys/wait.h> |
10 #include <unistd.h> | 10 #include <unistd.h> |
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53 _exit(1); | 53 _exit(1); |
54 } | 54 } |
55 | 55 |
56 ASSERT_NE(-1, pid); | 56 ASSERT_NE(-1, pid); |
57 int status = 0; | 57 int status = 0; |
58 ASSERT_EQ(pid, HANDLE_EINTR(waitpid(pid, &status, 0))); | 58 ASSERT_EQ(pid, HANDLE_EINTR(waitpid(pid, &status, 0))); |
59 ASSERT_TRUE(WIFEXITED(status)); | 59 ASSERT_TRUE(WIFEXITED(status)); |
60 EXPECT_EQ(kSuccessExit, WEXITSTATUS(status)); | 60 EXPECT_EQ(kSuccessExit, WEXITSTATUS(status)); |
61 } | 61 } |
62 | 62 |
| 63 TEST(SyscallWrappers, ForkWithFlagsUpdatesPidCache) { |
| 64 // The libc clone function, which allows ForkWithFlags to keep the pid cache |
| 65 // up to date, does not work on Valgrind. |
| 66 if (IsRunningOnValgrind()) { |
| 67 return; |
| 68 } |
| 69 |
| 70 // Warm up the libc pid cache, if there is one. |
| 71 ASSERT_EQ(sys_getpid(), getpid()); |
| 72 |
| 73 pid_t ctid = 0; |
| 74 pid_t pid = ForkWithFlags(CLONE_CHILD_SETTID | SIGCHLD, nullptr, &ctid); |
| 75 |
| 76 const int kSuccessExit = 0; |
| 77 if (0 == pid) { |
| 78 // In child. Check both the raw getpid syscall and the libc getpid wrapper |
| 79 // (which may rely on a pid cache). |
| 80 if (sys_getpid() == ctid && getpid() == ctid) |
| 81 _exit(kSuccessExit); |
| 82 _exit(1); |
| 83 } |
| 84 |
| 85 ASSERT_NE(-1, pid); |
| 86 int status = 0; |
| 87 ASSERT_EQ(pid, HANDLE_EINTR(waitpid(pid, &status, 0))); |
| 88 ASSERT_TRUE(WIFEXITED(status)); |
| 89 EXPECT_EQ(kSuccessExit, WEXITSTATUS(status)); |
| 90 } |
| 91 |
63 } // namespace | 92 } // namespace |
64 | 93 |
65 } // namespace sandbox | 94 } // namespace sandbox |
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