File: | tools/lldb/source/Host/common/Host.cpp |
Location: | line 263, column 29 |
Description: | Use of memory after it is freed |
1 | //===-- Host.cpp ------------------------------------------------*- C++ -*-===// | |||
2 | // | |||
3 | // The LLVM Compiler Infrastructure | |||
4 | // | |||
5 | // This file is distributed under the University of Illinois Open Source | |||
6 | // License. See LICENSE.TXT for details. | |||
7 | // | |||
8 | //===----------------------------------------------------------------------===// | |||
9 | ||||
10 | #include "lldb/lldb-python.h" | |||
11 | ||||
12 | // C includes | |||
13 | #include <errno(*__errno_location ()).h> | |||
14 | #include <limits.h> | |||
15 | #include <stdlib.h> | |||
16 | #include <sys/types.h> | |||
17 | #ifndef _WIN32 | |||
18 | #include <unistd.h> | |||
19 | #include <dlfcn.h> | |||
20 | #include <grp.h> | |||
21 | #include <netdb.h> | |||
22 | #include <pwd.h> | |||
23 | #include <sys/stat.h> | |||
24 | #endif | |||
25 | ||||
26 | #if defined (__APPLE__) | |||
27 | #include <mach/mach_port.h> | |||
28 | #include <mach/mach_init.h> | |||
29 | #include <mach-o/dyld.h> | |||
30 | #endif | |||
31 | ||||
32 | #if defined (__linux__1) || defined (__FreeBSD__) || defined (__FreeBSD_kernel__) || defined (__APPLE__) || defined(__NetBSD__) | |||
33 | #ifndef __ANDROID__ | |||
34 | #include <spawn.h> | |||
35 | #endif | |||
36 | #include <sys/wait.h> | |||
37 | #include <sys/syscall.h> | |||
38 | #endif | |||
39 | ||||
40 | #if defined (__FreeBSD__) | |||
41 | #include <pthread_np.h> | |||
42 | #endif | |||
43 | ||||
44 | // C++ includes | |||
45 | #include <limits> | |||
46 | ||||
47 | #include "lldb/Host/Host.h" | |||
48 | #include "lldb/Host/HostInfo.h" | |||
49 | #include "lldb/Core/ArchSpec.h" | |||
50 | #include "lldb/Core/Debugger.h" | |||
51 | #include "lldb/Core/Error.h" | |||
52 | #include "lldb/Core/Log.h" | |||
53 | #include "lldb/Core/Module.h" | |||
54 | #include "lldb/Host/FileSpec.h" | |||
55 | #include "lldb/Host/HostProcess.h" | |||
56 | #include "lldb/Host/MonitoringProcessLauncher.h" | |||
57 | #include "lldb/Host/ProcessLauncher.h" | |||
58 | #include "lldb/Host/ThreadLauncher.h" | |||
59 | #include "lldb/lldb-private-forward.h" | |||
60 | #include "lldb/Target/FileAction.h" | |||
61 | #include "lldb/Target/ProcessLaunchInfo.h" | |||
62 | #include "lldb/Target/TargetList.h" | |||
63 | #include "lldb/Utility/CleanUp.h" | |||
64 | ||||
65 | #if defined(_WIN32) | |||
66 | #include "lldb/Host/windows/ProcessLauncherWindows.h" | |||
67 | #else | |||
68 | #include "lldb/Host/posix/ProcessLauncherPosix.h" | |||
69 | #endif | |||
70 | ||||
71 | #if defined (__APPLE__) | |||
72 | #ifndef _POSIX_SPAWN_DISABLE_ASLR | |||
73 | #define _POSIX_SPAWN_DISABLE_ASLR 0x0100 | |||
74 | #endif | |||
75 | ||||
76 | extern "C" | |||
77 | { | |||
78 | int __pthread_chdir(const char *path); | |||
79 | int __pthread_fchdir (int fildes); | |||
80 | } | |||
81 | ||||
82 | #endif | |||
83 | ||||
84 | using namespace lldb; | |||
85 | using namespace lldb_private; | |||
86 | ||||
87 | #if !defined (__APPLE__) && !defined (_WIN32) | |||
88 | struct MonitorInfo | |||
89 | { | |||
90 | lldb::pid_t pid; // The process ID to monitor | |||
91 | Host::MonitorChildProcessCallback callback; // The callback function to call when "pid" exits or signals | |||
92 | void *callback_baton; // The callback baton for the callback function | |||
93 | bool monitor_signals; // If true, call the callback when "pid" gets signaled. | |||
94 | }; | |||
95 | ||||
96 | static thread_result_t | |||
97 | MonitorChildProcessThreadFunction (void *arg); | |||
98 | ||||
99 | HostThread | |||
100 | Host::StartMonitoringChildProcess(Host::MonitorChildProcessCallback callback, void *callback_baton, lldb::pid_t pid, bool monitor_signals) | |||
101 | { | |||
102 | MonitorInfo * info_ptr = new MonitorInfo(); | |||
103 | ||||
104 | info_ptr->pid = pid; | |||
105 | info_ptr->callback = callback; | |||
106 | info_ptr->callback_baton = callback_baton; | |||
107 | info_ptr->monitor_signals = monitor_signals; | |||
108 | ||||
109 | char thread_name[256]; | |||
110 | ::snprintf(thread_name, sizeof(thread_name), "<lldb.host.wait4(pid=%" PRIu64"l" "u" ")>", pid); | |||
111 | return ThreadLauncher::LaunchThread(thread_name, MonitorChildProcessThreadFunction, info_ptr, NULL__null); | |||
112 | } | |||
113 | ||||
114 | #ifndef __ANDROID__ | |||
115 | //------------------------------------------------------------------ | |||
116 | // Scoped class that will disable thread canceling when it is | |||
117 | // constructed, and exception safely restore the previous value it | |||
118 | // when it goes out of scope. | |||
119 | //------------------------------------------------------------------ | |||
120 | class ScopedPThreadCancelDisabler | |||
121 | { | |||
122 | public: | |||
123 | ScopedPThreadCancelDisabler() | |||
124 | { | |||
125 | // Disable the ability for this thread to be cancelled | |||
126 | int err = ::pthread_setcancelstate (PTHREAD_CANCEL_DISABLEPTHREAD_CANCEL_DISABLE, &m_old_state); | |||
127 | if (err != 0) | |||
128 | m_old_state = -1; | |||
129 | ||||
130 | } | |||
131 | ||||
132 | ~ScopedPThreadCancelDisabler() | |||
133 | { | |||
134 | // Restore the ability for this thread to be cancelled to what it | |||
135 | // previously was. | |||
136 | if (m_old_state != -1) | |||
137 | ::pthread_setcancelstate (m_old_state, 0); | |||
138 | } | |||
139 | private: | |||
140 | int m_old_state; // Save the old cancelability state. | |||
141 | }; | |||
142 | #endif | |||
143 | ||||
144 | static thread_result_t | |||
145 | MonitorChildProcessThreadFunction (void *arg) | |||
146 | { | |||
147 | Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS(1u << 1))); | |||
148 | const char *function = __FUNCTION__; | |||
149 | if (log) | |||
| ||||
150 | log->Printf ("%s (arg = %p) thread starting...", function, arg); | |||
151 | ||||
152 | MonitorInfo *info = (MonitorInfo *)arg; | |||
153 | ||||
154 | const Host::MonitorChildProcessCallback callback = info->callback; | |||
155 | void * const callback_baton = info->callback_baton; | |||
156 | const bool monitor_signals = info->monitor_signals; | |||
157 | ||||
158 | assert (info->pid <= UINT32_MAX)((info->pid <= (4294967295U)) ? static_cast<void> (0) : __assert_fail ("info->pid <= (4294967295U)", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn220848/tools/lldb/source/Host/common/Host.cpp" , 158, __PRETTY_FUNCTION__)); | |||
159 | const ::pid_t pid = monitor_signals ? -1 * getpgid(info->pid) : info->pid; | |||
160 | ||||
161 | delete info; | |||
162 | ||||
163 | int status = -1; | |||
164 | #if defined (__FreeBSD__) || defined (__FreeBSD_kernel__) | |||
165 | #define __WALL0x40000000 0 | |||
166 | #endif | |||
167 | const int options = __WALL0x40000000; | |||
168 | ||||
169 | while (1) | |||
170 | { | |||
171 | log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS(1u << 1)); | |||
172 | if (log) | |||
173 | log->Printf("%s ::wait_pid (pid = %" PRIi32"i" ", &status, options = %i)...", function, pid, options); | |||
174 | ||||
175 | // Wait for all child processes | |||
176 | #ifndef __ANDROID__ | |||
177 | ::pthread_testcancel (); | |||
178 | #endif | |||
179 | // Get signals from all children with same process group of pid | |||
180 | const ::pid_t wait_pid = ::waitpid (pid, &status, options); | |||
181 | #ifndef __ANDROID__ | |||
182 | ::pthread_testcancel (); | |||
183 | #endif | |||
184 | ||||
185 | if (wait_pid == -1) | |||
186 | { | |||
187 | if (errno(*__errno_location ()) == EINTR4) | |||
188 | continue; | |||
189 | else | |||
190 | { | |||
191 | if (log) | |||
192 | log->Printf ("%s (arg = %p) thread exiting because waitpid failed (%s)...", __FUNCTION__, arg, strerror(errno(*__errno_location ()))); | |||
193 | break; | |||
194 | } | |||
195 | } | |||
196 | else if (wait_pid > 0) | |||
197 | { | |||
198 | bool exited = false; | |||
199 | int signal = 0; | |||
200 | int exit_status = 0; | |||
201 | const char *status_cstr = NULL__null; | |||
202 | if (WIFSTOPPED(status)((((*(int *) &(status))) & 0xff) == 0x7f)) | |||
203 | { | |||
204 | signal = WSTOPSIG(status)((((*(int *) &(status))) & 0xff00) >> 8); | |||
205 | status_cstr = "STOPPED"; | |||
206 | } | |||
207 | else if (WIFEXITED(status)((((*(int *) &(status))) & 0x7f) == 0)) | |||
208 | { | |||
209 | exit_status = WEXITSTATUS(status)((((*(int *) &(status))) & 0xff00) >> 8); | |||
210 | status_cstr = "EXITED"; | |||
211 | exited = true; | |||
212 | } | |||
213 | else if (WIFSIGNALED(status)(((signed char) ((((*(int *) &(status))) & 0x7f) + 1) >> 1) > 0)) | |||
214 | { | |||
215 | signal = WTERMSIG(status)(((*(int *) &(status))) & 0x7f); | |||
216 | status_cstr = "SIGNALED"; | |||
217 | if (wait_pid == abs(pid)) { | |||
218 | exited = true; | |||
219 | exit_status = -1; | |||
220 | } | |||
221 | } | |||
222 | else | |||
223 | { | |||
224 | status_cstr = "(\?\?\?)"; | |||
225 | } | |||
226 | ||||
227 | // Scope for pthread_cancel_disabler | |||
228 | { | |||
229 | #ifndef __ANDROID__ | |||
230 | ScopedPThreadCancelDisabler pthread_cancel_disabler; | |||
231 | #endif | |||
232 | ||||
233 | log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS(1u << 1)); | |||
234 | if (log) | |||
235 | log->Printf ("%s ::waitpid (pid = %" PRIi32"i" ", &status, options = %i) => pid = %" PRIi32"i" ", status = 0x%8.8x (%s), signal = %i, exit_state = %i", | |||
236 | function, | |||
237 | wait_pid, | |||
238 | options, | |||
239 | pid, | |||
240 | status, | |||
241 | status_cstr, | |||
242 | signal, | |||
243 | exit_status); | |||
244 | ||||
245 | if (exited || (signal != 0 && monitor_signals)) | |||
246 | { | |||
247 | bool callback_return = false; | |||
248 | if (callback) | |||
249 | callback_return = callback (callback_baton, wait_pid, exited, signal, exit_status); | |||
250 | ||||
251 | // If our process exited, then this thread should exit | |||
252 | if (exited && wait_pid == abs(pid)) | |||
253 | { | |||
254 | if (log) | |||
255 | log->Printf ("%s (arg = %p) thread exiting because pid received exit signal...", __FUNCTION__, arg); | |||
256 | break; | |||
257 | } | |||
258 | // If the callback returns true, it means this process should | |||
259 | // exit | |||
260 | if (callback_return) | |||
261 | { | |||
262 | if (log) | |||
263 | log->Printf ("%s (arg = %p) thread exiting because callback returned true...", __FUNCTION__, arg); | |||
| ||||
264 | break; | |||
265 | } | |||
266 | } | |||
267 | } | |||
268 | } | |||
269 | } | |||
270 | ||||
271 | log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS(1u << 1)); | |||
272 | if (log) | |||
273 | log->Printf ("%s (arg = %p) thread exiting...", __FUNCTION__, arg); | |||
274 | ||||
275 | return NULL__null; | |||
276 | } | |||
277 | ||||
278 | #endif // #if !defined (__APPLE__) && !defined (_WIN32) | |||
279 | ||||
280 | #if !defined (__APPLE__) | |||
281 | ||||
282 | void | |||
283 | Host::SystemLog (SystemLogType type, const char *format, va_list args) | |||
284 | { | |||
285 | vfprintf (stderrstderr, format, args); | |||
286 | } | |||
287 | ||||
288 | #endif | |||
289 | ||||
290 | void | |||
291 | Host::SystemLog (SystemLogType type, const char *format, ...) | |||
292 | { | |||
293 | va_list args; | |||
294 | va_start (args, format)__builtin_va_start(args, format); | |||
295 | SystemLog (type, format, args); | |||
296 | va_end (args)__builtin_va_end(args); | |||
297 | } | |||
298 | ||||
299 | lldb::pid_t | |||
300 | Host::GetCurrentProcessID() | |||
301 | { | |||
302 | return ::getpid(); | |||
303 | } | |||
304 | ||||
305 | #ifndef _WIN32 | |||
306 | ||||
307 | lldb::tid_t | |||
308 | Host::GetCurrentThreadID() | |||
309 | { | |||
310 | #if defined (__APPLE__) | |||
311 | // Calling "mach_thread_self()" bumps the reference count on the thread | |||
312 | // port, so we need to deallocate it. mach_task_self() doesn't bump the ref | |||
313 | // count. | |||
314 | thread_port_t thread_self = mach_thread_self(); | |||
315 | mach_port_deallocate(mach_task_self(), thread_self); | |||
316 | return thread_self; | |||
317 | #elif defined(__FreeBSD__) | |||
318 | return lldb::tid_t(pthread_getthreadid_np()); | |||
319 | #elif defined(__linux__1) | |||
320 | return lldb::tid_t(syscall(SYS_gettid186)); | |||
321 | #else | |||
322 | return lldb::tid_t(pthread_self()); | |||
323 | #endif | |||
324 | } | |||
325 | ||||
326 | lldb::thread_t | |||
327 | Host::GetCurrentThread () | |||
328 | { | |||
329 | return lldb::thread_t(pthread_self()); | |||
330 | } | |||
331 | ||||
332 | const char * | |||
333 | Host::GetSignalAsCString (int signo) | |||
334 | { | |||
335 | switch (signo) | |||
336 | { | |||
337 | case SIGHUP1: return "SIGHUP"; // 1 hangup | |||
338 | case SIGINT2: return "SIGINT"; // 2 interrupt | |||
339 | case SIGQUIT3: return "SIGQUIT"; // 3 quit | |||
340 | case SIGILL4: return "SIGILL"; // 4 illegal instruction (not reset when caught) | |||
341 | case SIGTRAP5: return "SIGTRAP"; // 5 trace trap (not reset when caught) | |||
342 | case SIGABRT6: return "SIGABRT"; // 6 abort() | |||
343 | #if defined(SIGPOLL29) | |||
344 | #if !defined(SIGIO29) || (SIGPOLL29 != SIGIO29) | |||
345 | // Under some GNU/Linux, SIGPOLL and SIGIO are the same. Causing the build to | |||
346 | // fail with 'multiple define cases with same value' | |||
347 | case SIGPOLL29: return "SIGPOLL"; // 7 pollable event ([XSR] generated, not supported) | |||
348 | #endif | |||
349 | #endif | |||
350 | #if defined(SIGEMT) | |||
351 | case SIGEMT: return "SIGEMT"; // 7 EMT instruction | |||
352 | #endif | |||
353 | case SIGFPE8: return "SIGFPE"; // 8 floating point exception | |||
354 | case SIGKILL9: return "SIGKILL"; // 9 kill (cannot be caught or ignored) | |||
355 | case SIGBUS7: return "SIGBUS"; // 10 bus error | |||
356 | case SIGSEGV11: return "SIGSEGV"; // 11 segmentation violation | |||
357 | case SIGSYS31: return "SIGSYS"; // 12 bad argument to system call | |||
358 | case SIGPIPE13: return "SIGPIPE"; // 13 write on a pipe with no one to read it | |||
359 | case SIGALRM14: return "SIGALRM"; // 14 alarm clock | |||
360 | case SIGTERM15: return "SIGTERM"; // 15 software termination signal from kill | |||
361 | case SIGURG23: return "SIGURG"; // 16 urgent condition on IO channel | |||
362 | case SIGSTOP19: return "SIGSTOP"; // 17 sendable stop signal not from tty | |||
363 | case SIGTSTP20: return "SIGTSTP"; // 18 stop signal from tty | |||
364 | case SIGCONT18: return "SIGCONT"; // 19 continue a stopped process | |||
365 | case SIGCHLD17: return "SIGCHLD"; // 20 to parent on child stop or exit | |||
366 | case SIGTTIN21: return "SIGTTIN"; // 21 to readers pgrp upon background tty read | |||
367 | case SIGTTOU22: return "SIGTTOU"; // 22 like TTIN for output if (tp->t_local<OSTOP) | |||
368 | #if defined(SIGIO29) | |||
369 | case SIGIO29: return "SIGIO"; // 23 input/output possible signal | |||
370 | #endif | |||
371 | case SIGXCPU24: return "SIGXCPU"; // 24 exceeded CPU time limit | |||
372 | case SIGXFSZ25: return "SIGXFSZ"; // 25 exceeded file size limit | |||
373 | case SIGVTALRM26: return "SIGVTALRM"; // 26 virtual time alarm | |||
374 | case SIGPROF27: return "SIGPROF"; // 27 profiling time alarm | |||
375 | #if defined(SIGWINCH28) | |||
376 | case SIGWINCH28: return "SIGWINCH"; // 28 window size changes | |||
377 | #endif | |||
378 | #if defined(SIGINFO) | |||
379 | case SIGINFO: return "SIGINFO"; // 29 information request | |||
380 | #endif | |||
381 | case SIGUSR110: return "SIGUSR1"; // 30 user defined signal 1 | |||
382 | case SIGUSR212: return "SIGUSR2"; // 31 user defined signal 2 | |||
383 | default: | |||
384 | break; | |||
385 | } | |||
386 | return NULL__null; | |||
387 | } | |||
388 | ||||
389 | #endif | |||
390 | ||||
391 | void | |||
392 | Host::WillTerminate () | |||
393 | { | |||
394 | } | |||
395 | ||||
396 | #if !defined (__APPLE__) && !defined (__FreeBSD__) && !defined (__FreeBSD_kernel__) && !defined (__linux__1) // see macosx/Host.mm | |||
397 | ||||
398 | void | |||
399 | Host::Backtrace (Stream &strm, uint32_t max_frames) | |||
400 | { | |||
401 | // TODO: Is there a way to backtrace the current process on other systems? | |||
402 | } | |||
403 | ||||
404 | size_t | |||
405 | Host::GetEnvironment (StringList &env) | |||
406 | { | |||
407 | // TODO: Is there a way to the host environment for this process on other systems? | |||
408 | return 0; | |||
409 | } | |||
410 | ||||
411 | #endif // #if !defined (__APPLE__) && !defined (__FreeBSD__) && !defined (__FreeBSD_kernel__) && !defined (__linux__) | |||
412 | ||||
413 | #ifndef _WIN32 | |||
414 | ||||
415 | lldb::thread_key_t | |||
416 | Host::ThreadLocalStorageCreate(ThreadLocalStorageCleanupCallback callback) | |||
417 | { | |||
418 | pthread_key_t key; | |||
419 | ::pthread_key_create (&key, callback); | |||
420 | return key; | |||
421 | } | |||
422 | ||||
423 | void* | |||
424 | Host::ThreadLocalStorageGet(lldb::thread_key_t key) | |||
425 | { | |||
426 | return ::pthread_getspecific (key); | |||
427 | } | |||
428 | ||||
429 | void | |||
430 | Host::ThreadLocalStorageSet(lldb::thread_key_t key, void *value) | |||
431 | { | |||
432 | ::pthread_setspecific (key, value); | |||
433 | } | |||
434 | ||||
435 | #endif | |||
436 | ||||
437 | #if !defined (__APPLE__) // see Host.mm | |||
438 | ||||
439 | bool | |||
440 | Host::GetBundleDirectory (const FileSpec &file, FileSpec &bundle) | |||
441 | { | |||
442 | bundle.Clear(); | |||
443 | return false; | |||
444 | } | |||
445 | ||||
446 | bool | |||
447 | Host::ResolveExecutableInBundle (FileSpec &file) | |||
448 | { | |||
449 | return false; | |||
450 | } | |||
451 | #endif | |||
452 | ||||
453 | #ifndef _WIN32 | |||
454 | ||||
455 | FileSpec | |||
456 | Host::GetModuleFileSpecForHostAddress (const void *host_addr) | |||
457 | { | |||
458 | FileSpec module_filespec; | |||
459 | #ifndef __ANDROID__ | |||
460 | Dl_info info; | |||
461 | if (::dladdr (host_addr, &info)) | |||
462 | { | |||
463 | if (info.dli_fname) | |||
464 | module_filespec.SetFile(info.dli_fname, true); | |||
465 | } | |||
466 | #else | |||
467 | assert(false && "dladdr() not supported on Android")((false && "dladdr() not supported on Android") ? static_cast <void> (0) : __assert_fail ("false && \"dladdr() not supported on Android\"" , "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn220848/tools/lldb/source/Host/common/Host.cpp" , 467, __PRETTY_FUNCTION__)); | |||
468 | #endif | |||
469 | return module_filespec; | |||
470 | } | |||
471 | ||||
472 | #endif | |||
473 | ||||
474 | #if !defined(__linux__1) | |||
475 | bool | |||
476 | Host::FindProcessThreads (const lldb::pid_t pid, TidMap &tids_to_attach) | |||
477 | { | |||
478 | return false; | |||
479 | } | |||
480 | #endif | |||
481 | ||||
482 | lldb::TargetSP | |||
483 | Host::GetDummyTarget (lldb_private::Debugger &debugger) | |||
484 | { | |||
485 | static TargetSP g_dummy_target_sp; | |||
486 | ||||
487 | // FIXME: Maybe the dummy target should be per-Debugger | |||
488 | if (!g_dummy_target_sp || !g_dummy_target_sp->IsValid()) | |||
489 | { | |||
490 | ArchSpec arch(Target::GetDefaultArchitecture()); | |||
491 | if (!arch.IsValid()) | |||
492 | arch = HostInfo::GetArchitecture(); | |||
493 | Error err = debugger.GetTargetList().CreateTarget(debugger, | |||
494 | NULL__null, | |||
495 | arch.GetTriple().getTriple().c_str(), | |||
496 | false, | |||
497 | NULL__null, | |||
498 | g_dummy_target_sp); | |||
499 | } | |||
500 | ||||
501 | return g_dummy_target_sp; | |||
502 | } | |||
503 | ||||
504 | struct ShellInfo | |||
505 | { | |||
506 | ShellInfo () : | |||
507 | process_reaped (false), | |||
508 | can_delete (false), | |||
509 | pid (LLDB_INVALID_PROCESS_ID0), | |||
510 | signo(-1), | |||
511 | status(-1) | |||
512 | { | |||
513 | } | |||
514 | ||||
515 | lldb_private::Predicate<bool> process_reaped; | |||
516 | lldb_private::Predicate<bool> can_delete; | |||
517 | lldb::pid_t pid; | |||
518 | int signo; | |||
519 | int status; | |||
520 | }; | |||
521 | ||||
522 | static bool | |||
523 | MonitorShellCommand (void *callback_baton, | |||
524 | lldb::pid_t pid, | |||
525 | bool exited, // True if the process did exit | |||
526 | int signo, // Zero for no signal | |||
527 | int status) // Exit value of process if signal is zero | |||
528 | { | |||
529 | ShellInfo *shell_info = (ShellInfo *)callback_baton; | |||
530 | shell_info->pid = pid; | |||
531 | shell_info->signo = signo; | |||
532 | shell_info->status = status; | |||
533 | // Let the thread running Host::RunShellCommand() know that the process | |||
534 | // exited and that ShellInfo has been filled in by broadcasting to it | |||
535 | shell_info->process_reaped.SetValue(1, eBroadcastAlways); | |||
536 | // Now wait for a handshake back from that thread running Host::RunShellCommand | |||
537 | // so we know that we can delete shell_info_ptr | |||
538 | shell_info->can_delete.WaitForValueEqualTo(true); | |||
539 | // Sleep a bit to allow the shell_info->can_delete.SetValue() to complete... | |||
540 | usleep(1000); | |||
541 | // Now delete the shell info that was passed into this function | |||
542 | delete shell_info; | |||
543 | return true; | |||
544 | } | |||
545 | ||||
546 | Error | |||
547 | Host::RunShellCommand (const char *command, | |||
548 | const char *working_dir, | |||
549 | int *status_ptr, | |||
550 | int *signo_ptr, | |||
551 | std::string *command_output_ptr, | |||
552 | uint32_t timeout_sec, | |||
553 | bool run_in_default_shell) | |||
554 | { | |||
555 | Error error; | |||
556 | ProcessLaunchInfo launch_info; | |||
557 | if (run_in_default_shell) | |||
558 | { | |||
559 | // Run the command in a shell | |||
560 | launch_info.SetShell(HostInfo::GetDefaultShell()); | |||
561 | launch_info.GetArguments().AppendArgument(command); | |||
562 | const bool localhost = true; | |||
563 | const bool will_debug = false; | |||
564 | const bool first_arg_is_full_shell_command = true; | |||
565 | launch_info.ConvertArgumentsForLaunchingInShell (error, | |||
566 | localhost, | |||
567 | will_debug, | |||
568 | first_arg_is_full_shell_command, | |||
569 | 0); | |||
570 | } | |||
571 | else | |||
572 | { | |||
573 | // No shell, just run it | |||
574 | Args args (command); | |||
575 | const bool first_arg_is_executable = true; | |||
576 | launch_info.SetArguments(args, first_arg_is_executable); | |||
577 | } | |||
578 | ||||
579 | if (working_dir) | |||
580 | launch_info.SetWorkingDirectory(working_dir); | |||
581 | char output_file_path_buffer[PATH_MAX4096]; | |||
582 | const char *output_file_path = NULL__null; | |||
583 | ||||
584 | if (command_output_ptr) | |||
585 | { | |||
586 | // Create a temporary file to get the stdout/stderr and redirect the | |||
587 | // output of the command into this file. We will later read this file | |||
588 | // if all goes well and fill the data into "command_output_ptr" | |||
589 | FileSpec tmpdir_file_spec; | |||
590 | if (HostInfo::GetLLDBPath(ePathTypeLLDBTempSystemDir, tmpdir_file_spec)) | |||
591 | { | |||
592 | tmpdir_file_spec.AppendPathComponent("lldb-shell-output.XXXXXX"); | |||
593 | strncpy(output_file_path_buffer, tmpdir_file_spec.GetPath().c_str(), sizeof(output_file_path_buffer)); | |||
594 | } | |||
595 | else | |||
596 | { | |||
597 | strncpy(output_file_path_buffer, "/tmp/lldb-shell-output.XXXXXX", sizeof(output_file_path_buffer)); | |||
598 | } | |||
599 | ||||
600 | output_file_path = ::mktemp(output_file_path_buffer); | |||
601 | } | |||
602 | ||||
603 | launch_info.AppendSuppressFileAction (STDIN_FILENO0, true, false); | |||
604 | if (output_file_path) | |||
605 | { | |||
606 | launch_info.AppendOpenFileAction(STDOUT_FILENO1, output_file_path, false, true); | |||
607 | launch_info.AppendDuplicateFileAction(STDOUT_FILENO1, STDERR_FILENO2); | |||
608 | } | |||
609 | else | |||
610 | { | |||
611 | launch_info.AppendSuppressFileAction (STDOUT_FILENO1, false, true); | |||
612 | launch_info.AppendSuppressFileAction (STDERR_FILENO2, false, true); | |||
613 | } | |||
614 | ||||
615 | // The process monitor callback will delete the 'shell_info_ptr' below... | |||
616 | std::unique_ptr<ShellInfo> shell_info_ap (new ShellInfo()); | |||
617 | ||||
618 | const bool monitor_signals = false; | |||
619 | launch_info.SetMonitorProcessCallback(MonitorShellCommand, shell_info_ap.get(), monitor_signals); | |||
620 | ||||
621 | error = LaunchProcess (launch_info); | |||
622 | const lldb::pid_t pid = launch_info.GetProcessID(); | |||
623 | ||||
624 | if (error.Success() && pid == LLDB_INVALID_PROCESS_ID0) | |||
625 | error.SetErrorString("failed to get process ID"); | |||
626 | ||||
627 | if (error.Success()) | |||
628 | { | |||
629 | // The process successfully launched, so we can defer ownership of | |||
630 | // "shell_info" to the MonitorShellCommand callback function that will | |||
631 | // get called when the process dies. We release the unique pointer as it | |||
632 | // doesn't need to delete the ShellInfo anymore. | |||
633 | ShellInfo *shell_info = shell_info_ap.release(); | |||
634 | TimeValue *timeout_ptr = nullptr; | |||
635 | TimeValue timeout_time(TimeValue::Now()); | |||
636 | if (timeout_sec > 0) { | |||
637 | timeout_time.OffsetWithSeconds(timeout_sec); | |||
638 | timeout_ptr = &timeout_time; | |||
639 | } | |||
640 | bool timed_out = false; | |||
641 | shell_info->process_reaped.WaitForValueEqualTo(true, timeout_ptr, &timed_out); | |||
642 | if (timed_out) | |||
643 | { | |||
644 | error.SetErrorString("timed out waiting for shell command to complete"); | |||
645 | ||||
646 | // Kill the process since it didn't complete within the timeout specified | |||
647 | Kill (pid, SIGKILL9); | |||
648 | // Wait for the monitor callback to get the message | |||
649 | timeout_time = TimeValue::Now(); | |||
650 | timeout_time.OffsetWithSeconds(1); | |||
651 | timed_out = false; | |||
652 | shell_info->process_reaped.WaitForValueEqualTo(true, &timeout_time, &timed_out); | |||
653 | } | |||
654 | else | |||
655 | { | |||
656 | if (status_ptr) | |||
657 | *status_ptr = shell_info->status; | |||
658 | ||||
659 | if (signo_ptr) | |||
660 | *signo_ptr = shell_info->signo; | |||
661 | ||||
662 | if (command_output_ptr) | |||
663 | { | |||
664 | command_output_ptr->clear(); | |||
665 | FileSpec file_spec(output_file_path, File::eOpenOptionRead); | |||
666 | uint64_t file_size = file_spec.GetByteSize(); | |||
667 | if (file_size > 0) | |||
668 | { | |||
669 | if (file_size > command_output_ptr->max_size()) | |||
670 | { | |||
671 | error.SetErrorStringWithFormat("shell command output is too large to fit into a std::string"); | |||
672 | } | |||
673 | else | |||
674 | { | |||
675 | command_output_ptr->resize(file_size); | |||
676 | file_spec.ReadFileContents(0, &((*command_output_ptr)[0]), command_output_ptr->size(), &error); | |||
677 | } | |||
678 | } | |||
679 | } | |||
680 | } | |||
681 | shell_info->can_delete.SetValue(true, eBroadcastAlways); | |||
682 | } | |||
683 | ||||
684 | if (output_file_path) | |||
685 | ::unlink (output_file_path); | |||
686 | // Handshake with the monitor thread, or just let it know in advance that | |||
687 | // it can delete "shell_info" in case we timed out and were not able to kill | |||
688 | // the process... | |||
689 | return error; | |||
690 | } | |||
691 | ||||
692 | ||||
693 | // LaunchProcessPosixSpawn for Apple, Linux, FreeBSD and other GLIBC | |||
694 | // systems | |||
695 | ||||
696 | #if defined (__APPLE__) || defined (__linux__1) || defined (__FreeBSD__) || defined (__GLIBC__2) || defined(__NetBSD__) | |||
697 | ||||
698 | // this method needs to be visible to macosx/Host.cpp and | |||
699 | // common/Host.cpp. | |||
700 | ||||
701 | short | |||
702 | Host::GetPosixspawnFlags(const ProcessLaunchInfo &launch_info) | |||
703 | { | |||
704 | #ifndef __ANDROID__ | |||
705 | short flags = POSIX_SPAWN_SETSIGDEF0x04 | POSIX_SPAWN_SETSIGMASK0x08; | |||
706 | ||||
707 | #if defined (__APPLE__) | |||
708 | if (launch_info.GetFlags().Test (eLaunchFlagExec)) | |||
709 | flags |= POSIX_SPAWN_SETEXEC; // Darwin specific posix_spawn flag | |||
710 | ||||
711 | if (launch_info.GetFlags().Test (eLaunchFlagDebug)) | |||
712 | flags |= POSIX_SPAWN_START_SUSPENDED; // Darwin specific posix_spawn flag | |||
713 | ||||
714 | if (launch_info.GetFlags().Test (eLaunchFlagDisableASLR)) | |||
715 | flags |= _POSIX_SPAWN_DISABLE_ASLR; // Darwin specific posix_spawn flag | |||
716 | ||||
717 | if (launch_info.GetLaunchInSeparateProcessGroup()) | |||
718 | flags |= POSIX_SPAWN_SETPGROUP0x02; | |||
719 | ||||
720 | #ifdef POSIX_SPAWN_CLOEXEC_DEFAULT | |||
721 | #if defined (__APPLE__) && (defined (__x86_64__1) || defined (__i386__)) | |||
722 | static LazyBool g_use_close_on_exec_flag = eLazyBoolCalculate; | |||
723 | if (g_use_close_on_exec_flag == eLazyBoolCalculate) | |||
724 | { | |||
725 | g_use_close_on_exec_flag = eLazyBoolNo; | |||
726 | ||||
727 | uint32_t major, minor, update; | |||
728 | if (HostInfo::GetOSVersion(major, minor, update)) | |||
729 | { | |||
730 | // Kernel panic if we use the POSIX_SPAWN_CLOEXEC_DEFAULT on 10.7 or earlier | |||
731 | if (major > 10 || (major == 10 && minor > 7)) | |||
732 | { | |||
733 | // Only enable for 10.8 and later OS versions | |||
734 | g_use_close_on_exec_flag = eLazyBoolYes; | |||
735 | } | |||
736 | } | |||
737 | } | |||
738 | #else | |||
739 | static LazyBool g_use_close_on_exec_flag = eLazyBoolYes; | |||
740 | #endif | |||
741 | // Close all files exception those with file actions if this is supported. | |||
742 | if (g_use_close_on_exec_flag == eLazyBoolYes) | |||
743 | flags |= POSIX_SPAWN_CLOEXEC_DEFAULT; | |||
744 | #endif | |||
745 | #endif // #if defined (__APPLE__) | |||
746 | return flags; | |||
747 | #else | |||
748 | assert(false *&& "Host::GetPosixspawnFlags() not supported on Android")((false *&& "Host::GetPosixspawnFlags() not supported on Android" ) ? static_cast<void> (0) : __assert_fail ("false *&& \"Host::GetPosixspawnFlags() not supported on Android\"" , "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn220848/tools/lldb/source/Host/common/Host.cpp" , 748, __PRETTY_FUNCTION__)); | |||
749 | return 0; | |||
750 | #endif | |||
751 | } | |||
752 | ||||
753 | Error | |||
754 | Host::LaunchProcessPosixSpawn(const char *exe_path, const ProcessLaunchInfo &launch_info, lldb::pid_t &pid) | |||
755 | { | |||
756 | Error error; | |||
757 | #ifndef __ANDROID__ | |||
758 | Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_HOST(1u << 14) | LIBLLDB_LOG_PROCESS(1u << 1))); | |||
759 | ||||
760 | posix_spawnattr_t attr; | |||
761 | error.SetError( ::posix_spawnattr_init (&attr), eErrorTypePOSIX); | |||
762 | ||||
763 | if (error.Fail() || log) | |||
764 | error.PutToLog(log, "::posix_spawnattr_init ( &attr )"); | |||
765 | if (error.Fail()) | |||
766 | return error; | |||
767 | ||||
768 | // Make a quick class that will cleanup the posix spawn attributes in case | |||
769 | // we return in the middle of this function. | |||
770 | lldb_utility::CleanUp <posix_spawnattr_t *, int> posix_spawnattr_cleanup(&attr, posix_spawnattr_destroy); | |||
771 | ||||
772 | sigset_t no_signals; | |||
773 | sigset_t all_signals; | |||
774 | sigemptyset (&no_signals); | |||
775 | sigfillset (&all_signals); | |||
776 | ::posix_spawnattr_setsigmask(&attr, &no_signals); | |||
777 | #if defined (__linux__1) || defined (__FreeBSD__) | |||
778 | ::posix_spawnattr_setsigdefault(&attr, &no_signals); | |||
779 | #else | |||
780 | ::posix_spawnattr_setsigdefault(&attr, &all_signals); | |||
781 | #endif | |||
782 | ||||
783 | short flags = GetPosixspawnFlags(launch_info); | |||
784 | ||||
785 | error.SetError( ::posix_spawnattr_setflags (&attr, flags), eErrorTypePOSIX); | |||
786 | if (error.Fail() || log) | |||
787 | error.PutToLog(log, "::posix_spawnattr_setflags ( &attr, flags=0x%8.8x )", flags); | |||
788 | if (error.Fail()) | |||
789 | return error; | |||
790 | ||||
791 | // posix_spawnattr_setbinpref_np appears to be an Apple extension per: | |||
792 | // http://www.unix.com/man-page/OSX/3/posix_spawnattr_setbinpref_np/ | |||
793 | #if defined (__APPLE__) && !defined (__arm__) | |||
794 | ||||
795 | // Don't set the binpref if a shell was provided. After all, that's only going to affect what version of the shell | |||
796 | // is launched, not what fork of the binary is launched. We insert "arch --arch <ARCH> as part of the shell invocation | |||
797 | // to do that job on OSX. | |||
798 | ||||
799 | if (launch_info.GetShell() == nullptr) | |||
800 | { | |||
801 | // We don't need to do this for ARM, and we really shouldn't now that we | |||
802 | // have multiple CPU subtypes and no posix_spawnattr call that allows us | |||
803 | // to set which CPU subtype to launch... | |||
804 | const ArchSpec &arch_spec = launch_info.GetArchitecture(); | |||
805 | cpu_type_t cpu = arch_spec.GetMachOCPUType(); | |||
806 | cpu_type_t sub = arch_spec.GetMachOCPUSubType(); | |||
807 | if (cpu != 0 && | |||
808 | cpu != static_cast<cpu_type_t>(UINT32_MAX(4294967295U)) && | |||
809 | cpu != static_cast<cpu_type_t>(LLDB_INVALID_CPUTYPE(0xFFFFFFFEu)) && | |||
810 | !(cpu == 0x01000007 && sub == 8)) // If haswell is specified, don't try to set the CPU type or we will fail | |||
811 | { | |||
812 | size_t ocount = 0; | |||
813 | error.SetError( ::posix_spawnattr_setbinpref_np (&attr, 1, &cpu, &ocount), eErrorTypePOSIX); | |||
814 | if (error.Fail() || log) | |||
815 | error.PutToLog(log, "::posix_spawnattr_setbinpref_np ( &attr, 1, cpu_type = 0x%8.8x, count => %llu )", cpu, (uint64_t)ocount); | |||
816 | ||||
817 | if (error.Fail() || ocount != 1) | |||
818 | return error; | |||
819 | } | |||
820 | } | |||
821 | ||||
822 | #endif | |||
823 | ||||
824 | const char *tmp_argv[2]; | |||
825 | char * const *argv = (char * const*)launch_info.GetArguments().GetConstArgumentVector(); | |||
826 | char * const *envp = (char * const*)launch_info.GetEnvironmentEntries().GetConstArgumentVector(); | |||
827 | if (argv == NULL__null) | |||
828 | { | |||
829 | // posix_spawn gets very unhappy if it doesn't have at least the program | |||
830 | // name in argv[0]. One of the side affects I have noticed is the environment | |||
831 | // variables don't make it into the child process if "argv == NULL"!!! | |||
832 | tmp_argv[0] = exe_path; | |||
833 | tmp_argv[1] = NULL__null; | |||
834 | argv = (char * const*)tmp_argv; | |||
835 | } | |||
836 | ||||
837 | #if !defined (__APPLE__) | |||
838 | // manage the working directory | |||
839 | char current_dir[PATH_MAX4096]; | |||
840 | current_dir[0] = '\0'; | |||
841 | #endif | |||
842 | ||||
843 | const char *working_dir = launch_info.GetWorkingDirectory(); | |||
844 | if (working_dir) | |||
845 | { | |||
846 | #if defined (__APPLE__) | |||
847 | // Set the working directory on this thread only | |||
848 | if (__pthread_chdir (working_dir) < 0) { | |||
849 | if (errno(*__errno_location ()) == ENOENT2) { | |||
850 | error.SetErrorStringWithFormat("No such file or directory: %s", working_dir); | |||
851 | } else if (errno(*__errno_location ()) == ENOTDIR20) { | |||
852 | error.SetErrorStringWithFormat("Path doesn't name a directory: %s", working_dir); | |||
853 | } else { | |||
854 | error.SetErrorStringWithFormat("An unknown error occurred when changing directory for process execution."); | |||
855 | } | |||
856 | return error; | |||
857 | } | |||
858 | #else | |||
859 | if (::getcwd(current_dir, sizeof(current_dir)) == NULL__null) | |||
860 | { | |||
861 | error.SetError(errno(*__errno_location ()), eErrorTypePOSIX); | |||
862 | error.LogIfError(log, "unable to save the current directory"); | |||
863 | return error; | |||
864 | } | |||
865 | ||||
866 | if (::chdir(working_dir) == -1) | |||
867 | { | |||
868 | error.SetError(errno(*__errno_location ()), eErrorTypePOSIX); | |||
869 | error.LogIfError(log, "unable to change working directory to %s", working_dir); | |||
870 | return error; | |||
871 | } | |||
872 | #endif | |||
873 | } | |||
874 | ||||
875 | ::pid_t result_pid = LLDB_INVALID_PROCESS_ID0; | |||
876 | const size_t num_file_actions = launch_info.GetNumFileActions (); | |||
877 | if (num_file_actions > 0) | |||
878 | { | |||
879 | posix_spawn_file_actions_t file_actions; | |||
880 | error.SetError( ::posix_spawn_file_actions_init (&file_actions), eErrorTypePOSIX); | |||
881 | if (error.Fail() || log) | |||
882 | error.PutToLog(log, "::posix_spawn_file_actions_init ( &file_actions )"); | |||
883 | if (error.Fail()) | |||
884 | return error; | |||
885 | ||||
886 | // Make a quick class that will cleanup the posix spawn attributes in case | |||
887 | // we return in the middle of this function. | |||
888 | lldb_utility::CleanUp <posix_spawn_file_actions_t *, int> posix_spawn_file_actions_cleanup (&file_actions, posix_spawn_file_actions_destroy); | |||
889 | ||||
890 | for (size_t i=0; i<num_file_actions; ++i) | |||
891 | { | |||
892 | const FileAction *launch_file_action = launch_info.GetFileActionAtIndex(i); | |||
893 | if (launch_file_action) | |||
894 | { | |||
895 | if (!AddPosixSpawnFileAction(&file_actions, launch_file_action, log, error)) | |||
896 | return error; | |||
897 | } | |||
898 | } | |||
899 | ||||
900 | error.SetError(::posix_spawnp(&result_pid, exe_path, &file_actions, &attr, argv, envp), eErrorTypePOSIX); | |||
901 | ||||
902 | if (error.Fail() || log) | |||
903 | { | |||
904 | error.PutToLog(log, "::posix_spawnp ( pid => %i, path = '%s', file_actions = %p, attr = %p, argv = %p, envp = %p )", result_pid, | |||
905 | exe_path, static_cast<void *>(&file_actions), static_cast<void *>(&attr), reinterpret_cast<const void *>(argv), | |||
906 | reinterpret_cast<const void *>(envp)); | |||
907 | if (log) | |||
908 | { | |||
909 | for (int ii=0; argv[ii]; ++ii) | |||
910 | log->Printf("argv[%i] = '%s'", ii, argv[ii]); | |||
911 | } | |||
912 | } | |||
913 | ||||
914 | } | |||
915 | else | |||
916 | { | |||
917 | error.SetError(::posix_spawnp(&result_pid, exe_path, NULL__null, &attr, argv, envp), eErrorTypePOSIX); | |||
918 | ||||
919 | if (error.Fail() || log) | |||
920 | { | |||
921 | error.PutToLog(log, "::posix_spawnp ( pid => %i, path = '%s', file_actions = NULL, attr = %p, argv = %p, envp = %p )", | |||
922 | result_pid, exe_path, static_cast<void *>(&attr), reinterpret_cast<const void *>(argv), | |||
923 | reinterpret_cast<const void *>(envp)); | |||
924 | if (log) | |||
925 | { | |||
926 | for (int ii=0; argv[ii]; ++ii) | |||
927 | log->Printf("argv[%i] = '%s'", ii, argv[ii]); | |||
928 | } | |||
929 | } | |||
930 | } | |||
931 | pid = result_pid; | |||
932 | ||||
933 | if (working_dir) | |||
934 | { | |||
935 | #if defined (__APPLE__) | |||
936 | // No more thread specific current working directory | |||
937 | __pthread_fchdir (-1); | |||
938 | #else | |||
939 | if (::chdir(current_dir) == -1 && error.Success()) | |||
940 | { | |||
941 | error.SetError(errno(*__errno_location ()), eErrorTypePOSIX); | |||
942 | error.LogIfError(log, "unable to change current directory back to %s", | |||
943 | current_dir); | |||
944 | } | |||
945 | #endif | |||
946 | } | |||
947 | #else | |||
948 | error.SetErrorString("Host::LaunchProcessPosixSpawn() not supported on Android"); | |||
949 | #endif | |||
950 | ||||
951 | return error; | |||
952 | } | |||
953 | ||||
954 | bool | |||
955 | Host::AddPosixSpawnFileAction(void *_file_actions, const FileAction *info, Log *log, Error &error) | |||
956 | { | |||
957 | #ifndef __ANDROID__ | |||
958 | if (info == NULL__null) | |||
959 | return false; | |||
960 | ||||
961 | posix_spawn_file_actions_t *file_actions = reinterpret_cast<posix_spawn_file_actions_t *>(_file_actions); | |||
962 | ||||
963 | switch (info->GetAction()) | |||
964 | { | |||
965 | case FileAction::eFileActionNone: | |||
966 | error.Clear(); | |||
967 | break; | |||
968 | ||||
969 | case FileAction::eFileActionClose: | |||
970 | if (info->GetFD() == -1) | |||
971 | error.SetErrorString("invalid fd for posix_spawn_file_actions_addclose(...)"); | |||
972 | else | |||
973 | { | |||
974 | error.SetError(::posix_spawn_file_actions_addclose(file_actions, info->GetFD()), eErrorTypePOSIX); | |||
975 | if (log && (error.Fail() || log)) | |||
976 | error.PutToLog(log, "posix_spawn_file_actions_addclose (action=%p, fd=%i)", | |||
977 | static_cast<void *>(file_actions), info->GetFD()); | |||
978 | } | |||
979 | break; | |||
980 | ||||
981 | case FileAction::eFileActionDuplicate: | |||
982 | if (info->GetFD() == -1) | |||
983 | error.SetErrorString("invalid fd for posix_spawn_file_actions_adddup2(...)"); | |||
984 | else if (info->GetActionArgument() == -1) | |||
985 | error.SetErrorString("invalid duplicate fd for posix_spawn_file_actions_adddup2(...)"); | |||
986 | else | |||
987 | { | |||
988 | error.SetError( | |||
989 | ::posix_spawn_file_actions_adddup2(file_actions, info->GetFD(), info->GetActionArgument()), | |||
990 | eErrorTypePOSIX); | |||
991 | if (log && (error.Fail() || log)) | |||
992 | error.PutToLog(log, "posix_spawn_file_actions_adddup2 (action=%p, fd=%i, dup_fd=%i)", | |||
993 | static_cast<void *>(file_actions), info->GetFD(), info->GetActionArgument()); | |||
994 | } | |||
995 | break; | |||
996 | ||||
997 | case FileAction::eFileActionOpen: | |||
998 | if (info->GetFD() == -1) | |||
999 | error.SetErrorString("invalid fd in posix_spawn_file_actions_addopen(...)"); | |||
1000 | else | |||
1001 | { | |||
1002 | int oflag = info->GetActionArgument(); | |||
1003 | ||||
1004 | mode_t mode = 0; | |||
1005 | ||||
1006 | if (oflag & O_CREAT0100) | |||
1007 | mode = 0640; | |||
1008 | ||||
1009 | error.SetError( | |||
1010 | ::posix_spawn_file_actions_addopen(file_actions, info->GetFD(), info->GetPath(), oflag, mode), | |||
1011 | eErrorTypePOSIX); | |||
1012 | if (error.Fail() || log) | |||
1013 | error.PutToLog(log, | |||
1014 | "posix_spawn_file_actions_addopen (action=%p, fd=%i, path='%s', oflag=%i, mode=%i)", | |||
1015 | static_cast<void *>(file_actions), info->GetFD(), info->GetPath(), oflag, mode); | |||
1016 | } | |||
1017 | break; | |||
1018 | } | |||
1019 | return error.Success(); | |||
1020 | #else | |||
1021 | error.SetErrorString("Host::AddPosixSpawnFileAction() not supported on Android"); | |||
1022 | return false; | |||
1023 | #endif | |||
1024 | } | |||
1025 | ||||
1026 | #endif // LaunchProcedssPosixSpawn: Apple, Linux, FreeBSD and other GLIBC systems | |||
1027 | ||||
1028 | #if defined(__linux__1) || defined(__FreeBSD__) || defined(__GLIBC__2) || defined(__NetBSD__) || defined(_WIN32) | |||
1029 | // The functions below implement process launching via posix_spawn() for Linux, | |||
1030 | // FreeBSD and NetBSD. | |||
1031 | ||||
1032 | Error | |||
1033 | Host::LaunchProcess (ProcessLaunchInfo &launch_info) | |||
1034 | { | |||
1035 | std::unique_ptr<ProcessLauncher> delegate_launcher; | |||
1036 | #if defined(_WIN32) | |||
1037 | delegate_launcher.reset(new ProcessLauncherWindows()); | |||
1038 | #else | |||
1039 | delegate_launcher.reset(new ProcessLauncherPosix()); | |||
1040 | #endif | |||
1041 | MonitoringProcessLauncher launcher(std::move(delegate_launcher)); | |||
1042 | ||||
1043 | Error error; | |||
1044 | HostProcess process = launcher.LaunchProcess(launch_info, error); | |||
1045 | ||||
1046 | // TODO(zturner): It would be better if the entire HostProcess were returned instead of writing | |||
1047 | // it into this structure. | |||
1048 | launch_info.SetProcessID(process.GetProcessId()); | |||
1049 | ||||
1050 | return error; | |||
1051 | } | |||
1052 | ||||
1053 | #endif // defined(__linux__) || defined(__FreeBSD__) || defined(__NetBSD__) | |||
1054 | ||||
1055 | #ifndef _WIN32 | |||
1056 | ||||
1057 | void | |||
1058 | Host::Kill(lldb::pid_t pid, int signo) | |||
1059 | { | |||
1060 | ::kill(pid, signo); | |||
1061 | } | |||
1062 | ||||
1063 | #endif | |||
1064 | ||||
1065 | #if !defined (__APPLE__) | |||
1066 | bool | |||
1067 | Host::OpenFileInExternalEditor (const FileSpec &file_spec, uint32_t line_no) | |||
1068 | { | |||
1069 | return false; | |||
1070 | } | |||
1071 | ||||
1072 | void | |||
1073 | Host::SetCrashDescriptionWithFormat (const char *format, ...) | |||
1074 | { | |||
1075 | } | |||
1076 | ||||
1077 | void | |||
1078 | Host::SetCrashDescription (const char *description) | |||
1079 | { | |||
1080 | } | |||
1081 | ||||
1082 | lldb::pid_t | |||
1083 | Host::LaunchApplication (const FileSpec &app_file_spec) | |||
1084 | { | |||
1085 | return LLDB_INVALID_PROCESS_ID0; | |||
1086 | } | |||
1087 | ||||
1088 | #endif | |||
1089 | ||||
1090 | #if !defined (__linux__1) && !defined (__FreeBSD__) && !defined (__NetBSD__) | |||
1091 | ||||
1092 | const lldb_private::UnixSignalsSP& | |||
1093 | Host::GetUnixSignals () | |||
1094 | { | |||
1095 | static UnixSignalsSP s_unix_signals_sp (new UnixSignals ()); | |||
1096 | return s_unix_signals_sp; | |||
1097 | } | |||
1098 | ||||
1099 | #endif |