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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 "base/process/launch.h" | 5 #include "base/process/launch.h" |
6 | 6 |
7 #include <dirent.h> | 7 #include <dirent.h> |
8 #include <errno.h> | 8 #include <errno.h> |
9 #include <fcntl.h> | 9 #include <fcntl.h> |
10 #include <signal.h> | 10 #include <signal.h> |
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304 const sigset_t orig_sigmask = SetSignalMask(full_sigset); | 304 const sigset_t orig_sigmask = SetSignalMask(full_sigset); |
305 | 305 |
306 pid_t pid; | 306 pid_t pid; |
307 #if defined(OS_LINUX) | 307 #if defined(OS_LINUX) |
308 if (options.clone_flags) { | 308 if (options.clone_flags) { |
309 // Signal handling in this function assumes the creation of a new | 309 // Signal handling in this function assumes the creation of a new |
310 // process, so we check that a thread is not being created by mistake | 310 // process, so we check that a thread is not being created by mistake |
311 // and that signal handling follows the process-creation rules. | 311 // and that signal handling follows the process-creation rules. |
312 RAW_CHECK( | 312 RAW_CHECK( |
313 !(options.clone_flags & (CLONE_SIGHAND | CLONE_THREAD | CLONE_VM))); | 313 !(options.clone_flags & (CLONE_SIGHAND | CLONE_THREAD | CLONE_VM))); |
314 | 314 pid = syscall(__NR_clone, options.clone_flags, 0, 0, 0); |
315 // We specify a null ptid and ctid. | |
316 RAW_CHECK( | |
317 !(options.clone_flags & | |
318 (CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID | CLONE_PARENT_SETTID))); | |
319 | |
320 // Since we use waitpid, we do not support custom termination signals in the | |
321 // clone flags. | |
322 RAW_CHECK((options.clone_flags & 0xff) == 0); | |
323 | |
324 pid = ForkWithFlags(options.clone_flags | SIGCHLD, nullptr, nullptr); | |
325 } else | 315 } else |
326 #endif | 316 #endif |
327 { | 317 { |
328 pid = fork(); | 318 pid = fork(); |
329 } | 319 } |
330 | 320 |
331 // Always restore the original signal mask in the parent. | 321 // Always restore the original signal mask in the parent. |
332 if (pid != 0) { | 322 if (pid != 0) { |
333 SetSignalMask(orig_sigmask); | 323 SetSignalMask(orig_sigmask); |
334 } | 324 } |
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674 std::string* output, | 664 std::string* output, |
675 int* exit_code) { | 665 int* exit_code) { |
676 // Run |execve()| with the current environment and store "unlimited" data. | 666 // Run |execve()| with the current environment and store "unlimited" data. |
677 GetAppOutputInternalResult result = GetAppOutputInternal( | 667 GetAppOutputInternalResult result = GetAppOutputInternal( |
678 cl.argv(), NULL, output, std::numeric_limits<std::size_t>::max(), true, | 668 cl.argv(), NULL, output, std::numeric_limits<std::size_t>::max(), true, |
679 exit_code); | 669 exit_code); |
680 return result == EXECUTE_SUCCESS; | 670 return result == EXECUTE_SUCCESS; |
681 } | 671 } |
682 | 672 |
683 } // namespace base | 673 } // namespace base |
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