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Commit | Line | Data |
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ce637855 CV |
1 | /* strace.cc |
2 | ||
8b800efe | 3 | Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, |
3afd8b74 | 4 | 2009, 2010 Red Hat Inc. |
ce637855 CV |
5 | |
6 | Written by Chris Faylor <cgf@redhat.com> | |
7 | ||
8 | This file is part of Cygwin. | |
9 | ||
10 | This software is a copyrighted work licensed under the terms of the | |
11 | Cygwin license. Please consult the file "CYGWIN_LICENSE" for | |
12 | details. */ | |
13 | ||
de6f8362 | 14 | #define cygwin_internal cygwin_internal_dontuse |
1fd5e000 CF |
15 | #include <stdio.h> |
16 | #include <fcntl.h> | |
17 | #include <getopt.h> | |
18 | #include <stdarg.h> | |
19 | #include <string.h> | |
20 | #include <stdlib.h> | |
86fbc3d9 | 21 | #include <time.h> |
1fd5e000 CF |
22 | #include <windows.h> |
23 | #include <signal.h> | |
de6f8362 CF |
24 | #include <errno.h> |
25 | #include "cygwin/include/sys/strace.h" | |
26 | #include "cygwin/include/sys/cygwin.h" | |
229f2bb4 | 27 | #include "path.h" |
de6f8362 | 28 | #undef cygwin_internal |
71d8f118 | 29 | #include "loadlib.h" |
1fd5e000 | 30 | |
b6e259b1 DD |
31 | /* we *know* we're being built with GCC */ |
32 | #define alloca __builtin_alloca | |
33 | ||
33f0f67d | 34 | // Version string. |
ba692ae9 | 35 | static const char version[] = "$Revision$"; |
33f0f67d | 36 | |
1fd5e000 | 37 | static const char *pgm; |
f69af9b3 | 38 | static int forkdebug = 1; |
78fed23c | 39 | static int numerror = 1; |
801d6cc7 | 40 | static int show_usecs = 1; |
78fed23c | 41 | static int delta = 1; |
5d970405 CF |
42 | static int hhmmss; |
43 | static int bufsize; | |
44 | static int new_window; | |
45 | static long flush_period; | |
46 | static int include_hex; | |
47 | static int quiet = -1; | |
48 | ||
49 | static unsigned char strace_active = 1; | |
50 | static int processes; | |
1fd5e000 CF |
51 | |
52 | static BOOL close_handle (HANDLE h, DWORD ok); | |
53 | ||
54 | #define CloseHandle(h) close_handle(h, 0) | |
55 | ||
56 | struct child_list | |
eedc36cb CF |
57 | { |
58 | DWORD id; | |
59 | HANDLE hproc; | |
60 | int saw_stars; | |
61 | char nfields; | |
62 | long long start_time; | |
63 | DWORD last_usecs; | |
64 | struct child_list *next; | |
65 | child_list ():id (0), hproc (NULL), saw_stars (0), nfields (0), | |
66 | start_time (0), last_usecs (0), next (NULL) | |
1fd5e000 | 67 | { |
eedc36cb CF |
68 | } |
69 | }; | |
1fd5e000 | 70 | |
22fe0c41 | 71 | child_list children; |
1fd5e000 CF |
72 | |
73 | static void | |
74 | warn (int geterrno, const char *fmt, ...) | |
75 | { | |
76 | va_list args; | |
77 | char buf[4096]; | |
78 | ||
79 | va_start (args, fmt); | |
80 | sprintf (buf, "%s: ", pgm); | |
81 | vsprintf (strchr (buf, '\0'), fmt, args); | |
82 | if (geterrno) | |
83 | perror (buf); | |
84 | else | |
85 | { | |
86 | fputs (buf, stderr); | |
87 | fputs ("\n", stderr); | |
88 | } | |
89 | } | |
90 | ||
91 | static void __attribute__ ((noreturn)) | |
92 | error (int geterrno, const char *fmt, ...) | |
93 | { | |
94 | va_list args; | |
95 | char buf[4096]; | |
96 | ||
97 | va_start (args, fmt); | |
98 | sprintf (buf, "%s: ", pgm); | |
99 | vsprintf (strchr (buf, '\0'), fmt, args); | |
100 | if (geterrno) | |
101 | perror (buf); | |
102 | else | |
103 | { | |
104 | fputs (buf, stderr); | |
105 | fputs ("\n", stderr); | |
106 | } | |
80082f1e | 107 | exit (1); |
1fd5e000 CF |
108 | } |
109 | ||
110 | DWORD lastid = 0; | |
111 | HANDLE lasth; | |
112 | ||
22fe0c41 CF |
113 | static child_list * |
114 | get_child (DWORD id) | |
1fd5e000 CF |
115 | { |
116 | child_list *c; | |
eedc36cb | 117 | for (c = &children; (c = c->next) != NULL;) |
1fd5e000 | 118 | if (c->id == id) |
22fe0c41 | 119 | return c; |
1fd5e000 | 120 | |
5d970405 CF |
121 | return NULL; |
122 | } | |
123 | ||
124 | static void | |
125 | add_child (DWORD id, HANDLE hproc) | |
126 | { | |
127 | if (!get_child (id)) | |
128 | { | |
129 | child_list *c = children.next; | |
130 | children.next = (child_list *) calloc (1, sizeof (child_list)); | |
131 | children.next->next = c; | |
132 | lastid = children.next->id = id; | |
133 | lasth = children.next->hproc = hproc; | |
134 | processes++; | |
135 | if (!quiet) | |
a35d9f1a | 136 | fprintf (stderr, "Windows process %lu attached\n", id); |
5d970405 | 137 | } |
1fd5e000 CF |
138 | } |
139 | ||
140 | static void | |
daed3bec | 141 | remove_child (DWORD id) |
1fd5e000 CF |
142 | { |
143 | child_list *c; | |
144 | if (id == lastid) | |
145 | lastid = 0; | |
146 | for (c = &children; c->next != NULL; c = c->next) | |
147 | if (c->next->id == id) | |
148 | { | |
149 | child_list *c1 = c->next; | |
1fd5e000 | 150 | c->next = c1->next; |
cf737d6b | 151 | free (c1); |
5d970405 | 152 | if (!quiet) |
a35d9f1a | 153 | fprintf (stderr, "Windows process %lu detached\n", id); |
5d970405 | 154 | processes--; |
1fd5e000 CF |
155 | return; |
156 | } | |
157 | ||
158 | error (0, "no process id %d found", id); | |
159 | } | |
160 | ||
161 | #define LINE_BUF_CHUNK 128 | |
162 | ||
163 | class linebuf | |
164 | { | |
165 | size_t alloc; | |
166 | public: | |
eedc36cb | 167 | size_t ix; |
1fd5e000 CF |
168 | char *buf; |
169 | linebuf () | |
170 | { | |
171 | ix = 0; | |
172 | alloc = 0; | |
173 | buf = NULL; | |
174 | } | |
eedc36cb CF |
175 | ~linebuf () |
176 | { | |
177 | if (buf) | |
178 | free (buf); | |
179 | } | |
1fd5e000 | 180 | void add (const char *what, int len); |
eedc36cb CF |
181 | void add (const char *what) |
182 | { | |
183 | add (what, strlen (what)); | |
184 | } | |
1fd5e000 CF |
185 | void prepend (const char *what, int len); |
186 | }; | |
187 | ||
188 | void | |
189 | linebuf::add (const char *what, int len) | |
190 | { | |
191 | size_t newix; | |
192 | if ((newix = ix + len) >= alloc) | |
193 | { | |
194 | alloc += LINE_BUF_CHUNK + len; | |
195 | buf = (char *) realloc (buf, alloc + 1); | |
196 | } | |
197 | memcpy (buf + ix, what, len); | |
198 | ix = newix; | |
199 | buf[ix] = '\0'; | |
200 | } | |
201 | ||
202 | void | |
203 | linebuf::prepend (const char *what, int len) | |
204 | { | |
205 | int buflen; | |
206 | size_t newix; | |
207 | if ((newix = ix + len) >= alloc) | |
208 | { | |
209 | alloc += LINE_BUF_CHUNK + len; | |
210 | buf = (char *) realloc (buf, alloc + 1); | |
211 | buf[ix] = '\0'; | |
212 | } | |
213 | if ((buflen = strlen (buf))) | |
eedc36cb | 214 | memmove (buf + len, buf, buflen + 1); |
1fd5e000 | 215 | else |
eedc36cb | 216 | buf[newix] = '\0'; |
1fd5e000 CF |
217 | memcpy (buf, what, len); |
218 | ix = newix; | |
219 | } | |
220 | ||
221 | static void | |
eedc36cb | 222 | make_command_line (linebuf & one_line, char **argv) |
1fd5e000 CF |
223 | { |
224 | for (; *argv; argv++) | |
225 | { | |
226 | char *p = NULL; | |
227 | const char *a = *argv; | |
228 | ||
229 | int len = strlen (a); | |
230 | if (len != 0 && !(p = strpbrk (a, " \t\n\r\""))) | |
231 | one_line.add (a, len); | |
232 | else | |
233 | { | |
234 | one_line.add ("\"", 1); | |
235 | for (; p; a = p, p = strchr (p, '"')) | |
236 | { | |
237 | one_line.add (a, ++p - a); | |
238 | if (p[-1] == '"') | |
239 | one_line.add ("\"", 1); | |
240 | } | |
241 | if (*a) | |
242 | one_line.add (a); | |
243 | one_line.add ("\"", 1); | |
244 | } | |
245 | one_line.add (" ", 1); | |
246 | } | |
247 | ||
248 | if (one_line.ix) | |
249 | one_line.buf[one_line.ix - 1] = '\0'; | |
250 | else | |
251 | one_line.add ("", 1); | |
252 | } | |
253 | ||
254 | static DWORD child_pid; | |
255 | ||
256 | static BOOL WINAPI | |
78fed23c | 257 | ctrl_c (DWORD) |
1fd5e000 CF |
258 | { |
259 | static int tic = 1; | |
260 | if ((tic ^= 1) && !GenerateConsoleCtrlEvent (CTRL_C_EVENT, 0)) | |
261 | error (0, "couldn't send CTRL-C to child, win32 error %d\n", | |
262 | GetLastError ()); | |
263 | return TRUE; | |
264 | } | |
265 | ||
ac674bc8 CF |
266 | extern "C" { |
267 | unsigned long (*cygwin_internal) (int, ...); | |
b5f48aa9 | 268 | WCHAR cygwin_dll_path[32768]; |
ac674bc8 | 269 | }; |
de6f8362 CF |
270 | |
271 | static int | |
272 | load_cygwin () | |
273 | { | |
274 | static HMODULE h; | |
275 | ||
276 | if (cygwin_internal) | |
277 | return 1; | |
278 | ||
279 | if (h) | |
280 | return 0; | |
281 | ||
282 | if (!(h = LoadLibrary ("cygwin1.dll"))) | |
283 | { | |
284 | errno = ENOENT; | |
285 | return 0; | |
286 | } | |
b5f48aa9 | 287 | GetModuleFileNameW (h, cygwin_dll_path, 32768); |
de6f8362 CF |
288 | if (!(cygwin_internal = (DWORD (*) (int, ...)) GetProcAddress (h, "cygwin_internal"))) |
289 | { | |
290 | errno = ENOSYS; | |
291 | return 0; | |
292 | } | |
293 | return 1; | |
294 | } | |
295 | ||
296 | static void | |
297 | attach_process (pid_t pid) | |
298 | { | |
de6f8362 CF |
299 | child_pid = (DWORD) cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid); |
300 | if (!child_pid) | |
5d970405 | 301 | child_pid = pid; |
de6f8362 CF |
302 | |
303 | if (!DebugActiveProcess (child_pid)) | |
5d970405 | 304 | error (0, "couldn't attach to pid %d for debugging", child_pid); |
de6f8362 | 305 | |
de6f8362 CF |
306 | return; |
307 | } | |
308 | ||
309 | ||
1fd5e000 CF |
310 | static void |
311 | create_child (char **argv) | |
312 | { | |
313 | linebuf one_line; | |
314 | ||
315 | STARTUPINFO si; | |
316 | PROCESS_INFORMATION pi; | |
317 | BOOL ret; | |
318 | DWORD flags; | |
319 | ||
82f123e5 CF |
320 | if (strchr (*argv, '/')) |
321 | *argv = cygpath (*argv, NULL); | |
1fd5e000 CF |
322 | memset (&si, 0, sizeof (si)); |
323 | si.cb = sizeof (si); | |
324 | ||
f69af9b3 | 325 | flags = CREATE_DEFAULT_ERROR_MODE |
80082f1e | 326 | | (forkdebug ? DEBUG_PROCESS : DEBUG_ONLY_THIS_PROCESS); |
f69af9b3 CF |
327 | if (new_window) |
328 | flags |= CREATE_NEW_CONSOLE | CREATE_NEW_PROCESS_GROUP; | |
1fd5e000 CF |
329 | |
330 | make_command_line (one_line, argv); | |
331 | ||
332 | SetConsoleCtrlHandler (NULL, 0); | |
08825b6e CF |
333 | const char *cygwin_env = getenv ("CYGWIN"); |
334 | const char *space; | |
335 | if (cygwin_env) | |
336 | space = " "; | |
337 | else | |
338 | space = cygwin_env = ""; | |
339 | char *newenv = (char *) malloc (sizeof ("CYGWIN=noglob") + strlen (space) + strlen (cygwin_env)); | |
340 | sprintf (newenv, "CYGWIN=noglob%s%s", space, cygwin_env); | |
341 | _putenv (newenv); | |
eedc36cb | 342 | ret = CreateProcess (0, one_line.buf, /* command line */ |
1fd5e000 CF |
343 | NULL, /* Security */ |
344 | NULL, /* thread */ | |
345 | TRUE, /* inherit handles */ | |
346 | flags, /* start flags */ | |
08825b6e CF |
347 | NULL, /* default environment */ |
348 | NULL, /* current directory */ | |
eedc36cb | 349 | &si, &pi); |
1fd5e000 | 350 | if (!ret) |
eedc36cb CF |
351 | error (0, "error creating process %s, (error %d)", *argv, |
352 | GetLastError ()); | |
1fd5e000 CF |
353 | |
354 | CloseHandle (pi.hThread); | |
355 | CloseHandle (pi.hProcess); | |
356 | child_pid = pi.dwProcessId; | |
357 | SetConsoleCtrlHandler (ctrl_c, 1); | |
358 | } | |
359 | ||
360 | static int | |
361 | output_winerror (FILE *ofile, char *s) | |
362 | { | |
363 | char *winerr = strstr (s, "Win32 error "); | |
364 | if (!winerr) | |
365 | return 0; | |
366 | ||
367 | DWORD errnum = atoi (winerr + sizeof ("Win32 error ") - 1); | |
368 | if (!errnum) | |
369 | return 0; | |
370 | ||
371 | /* | |
372 | * NOTE: Currently there is no policy for how long the | |
373 | * the buffers are, and looks like 256 is a smallest one | |
374 | * (dlfcn.cc). Other than error 1395 (length 213) and | |
375 | * error 1015 (length 249), the rest are all under 188 | |
376 | * characters, and so I'll use 189 as the buffer length. | |
377 | * For those longer error messages, FormatMessage will | |
378 | * return FALSE, and we'll get the old behaviour such as | |
379 | * ``Win32 error 1395'' etc. | |
380 | */ | |
381 | char buf[4096]; | |
382 | if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM | |
383 | | FORMAT_MESSAGE_IGNORE_INSERTS, | |
384 | NULL, | |
385 | errnum, | |
386 | MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT), | |
eedc36cb | 387 | (LPTSTR) buf, sizeof (buf), NULL)) |
1fd5e000 CF |
388 | return 0; |
389 | ||
390 | /* Get rid the trailing CR/NL pair. */ | |
391 | char *p = strchr (buf, '\0'); | |
392 | p[-2] = '\n'; | |
393 | p[-1] = '\0'; | |
394 | ||
395 | *winerr = '\0'; | |
396 | fputs (s, ofile); | |
397 | fputs (buf, ofile); | |
398 | return 1; | |
399 | } | |
400 | ||
78fed23c CF |
401 | static SYSTEMTIME * |
402 | syst (long long t) | |
403 | { | |
404 | FILETIME n; | |
405 | static SYSTEMTIME st; | |
801d6cc7 | 406 | long long now = t /*+ ((long long) usecs * 10)*/; |
78fed23c CF |
407 | n.dwHighDateTime = now >> 32; |
408 | n.dwLowDateTime = now & 0xffffffff; | |
409 | FileTimeToSystemTime (&n, &st); | |
410 | return &st; | |
411 | } | |
412 | ||
1fd5e000 CF |
413 | static void __stdcall |
414 | handle_output_debug_string (DWORD id, LPVOID p, unsigned mask, FILE *ofile) | |
415 | { | |
416 | int len; | |
417 | int special; | |
418 | char alen[3 + 8 + 1]; | |
419 | DWORD nbytes; | |
22fe0c41 | 420 | child_list *child = get_child (id); |
5d970405 CF |
421 | if (!child) |
422 | error (0, "no process id %d found", id); | |
22fe0c41 | 423 | HANDLE hchild = child->hproc; |
eedc36cb | 424 | #define INTROLEN (sizeof (alen) - 1) |
1fd5e000 CF |
425 | |
426 | if (id == lastid && hchild != lasth) | |
427 | warn (0, "%p != %p", hchild, lasth); | |
428 | ||
429 | alen[INTROLEN] = '\0'; | |
430 | if (!ReadProcessMemory (hchild, p, alen, INTROLEN, &nbytes)) | |
431 | #ifndef DEBUGGING | |
432 | return; | |
433 | #else | |
eedc36cb CF |
434 | error (0, |
435 | "couldn't get message length from subprocess %d<%p>, windows error %d", | |
1fd5e000 CF |
436 | id, hchild, GetLastError ()); |
437 | #endif | |
438 | ||
439 | if (strncmp (alen, "cYg", 3)) | |
440 | return; | |
441 | len = (int) strtoul (alen + 3, NULL, 16); | |
442 | if (!len) | |
443 | return; | |
444 | ||
445 | if (len > 0) | |
446 | special = 0; | |
447 | else | |
448 | { | |
449 | special = len; | |
5d970405 | 450 | if (special == _STRACE_INTERFACE_ACTIVATE_ADDR || special == _STRACE_CHILD_PID) |
1fd5e000 CF |
451 | len = 17; |
452 | } | |
78fed23c CF |
453 | |
454 | char *buf; | |
459a9561 | 455 | buf = (char *) alloca (len + 85) + 20; |
1fd5e000 CF |
456 | |
457 | if (!ReadProcessMemory (hchild, ((char *) p) + INTROLEN, buf, len, &nbytes)) | |
458 | error (0, "couldn't get message from subprocess, windows error %d", | |
459 | GetLastError ()); | |
460 | ||
461 | buf[len] = '\0'; | |
462 | char *s = strtok (buf, " "); | |
463 | ||
a593a4c5 | 464 | unsigned long n = strtoul (s, NULL, 16); |
1fd5e000 CF |
465 | |
466 | s = strchr (s, '\0') + 1; | |
467 | ||
5d970405 CF |
468 | if (special == _STRACE_CHILD_PID) |
469 | { | |
470 | if (!DebugActiveProcess (n)) | |
471 | error (0, "couldn't attach to subprocess %d for debugging, " | |
472 | "windows error %d", n, GetLastError ()); | |
473 | return; | |
474 | } | |
475 | ||
1fd5e000 CF |
476 | if (special == _STRACE_INTERFACE_ACTIVATE_ADDR) |
477 | { | |
5d970405 CF |
478 | if (!WriteProcessMemory (hchild, (LPVOID) n, &strace_active, |
479 | sizeof (strace_active), &nbytes)) | |
480 | error (0, "couldn't write strace flag to subprocess at %p, " | |
481 | "windows error %d", n, GetLastError ()); | |
1fd5e000 CF |
482 | return; |
483 | } | |
484 | ||
78fed23c CF |
485 | char *origs = s; |
486 | ||
1fd5e000 | 487 | if (mask & n) |
eedc36cb | 488 | /* got it */ ; |
1fd5e000 | 489 | else if (!(mask & _STRACE_ALL) || (n & _STRACE_NOTALL)) |
eedc36cb | 490 | return; /* This should not be included in "all" output */ |
1fd5e000 | 491 | |
78fed23c CF |
492 | DWORD dusecs, usecs; |
493 | char *ptusec, *ptrest; | |
494 | ||
495 | dusecs = strtoul (s, &ptusec, 10); | |
496 | char *q = ptusec; | |
497 | while (*q == ' ') | |
498 | q++; | |
499 | if (*q != '[') | |
500 | { | |
501 | usecs = strtoul (q, &ptrest, 10); | |
502 | while (*ptrest == ' ') | |
503 | ptrest++; | |
504 | } | |
505 | else | |
506 | { | |
507 | ptrest = q; | |
801d6cc7 | 508 | ptusec = show_usecs ? s : ptrest; |
78fed23c CF |
509 | usecs = dusecs; |
510 | } | |
511 | ||
22fe0c41 | 512 | if (child->saw_stars == 0) |
78fed23c CF |
513 | { |
514 | FILETIME st; | |
515 | char *news; | |
516 | ||
517 | GetSystemTimeAsFileTime (&st); | |
518 | FileTimeToLocalFileTime (&st, &st); | |
22fe0c41 CF |
519 | child->start_time = st.dwHighDateTime; |
520 | child->start_time <<= 32; | |
521 | child->start_time |= st.dwLowDateTime; | |
78fed23c | 522 | if (*(news = ptrest) != '[') |
22fe0c41 | 523 | child->saw_stars = 2; |
78fed23c CF |
524 | else |
525 | { | |
22fe0c41 | 526 | child->saw_stars++; |
78fed23c | 527 | while ((news = strchr (news, ' ')) != NULL && *++news != '*') |
22fe0c41 | 528 | child->nfields++; |
78fed23c | 529 | if (news == NULL) |
22fe0c41 | 530 | child->saw_stars++; |
78fed23c CF |
531 | else |
532 | { | |
533 | s = news; | |
22fe0c41 | 534 | child->nfields++; |
78fed23c CF |
535 | } |
536 | } | |
537 | } | |
22fe0c41 | 538 | else if (child->saw_stars < 2) |
78fed23c CF |
539 | { |
540 | int i; | |
541 | char *news; | |
542 | if (*(news = ptrest) != '[') | |
22fe0c41 | 543 | child->saw_stars = 2; |
78fed23c CF |
544 | else |
545 | { | |
22fe0c41 | 546 | for (i = 0; i < child->nfields; i++) |
78fed23c | 547 | if ((news = strchr (news, ' ')) == NULL) |
eedc36cb | 548 | break; // Should never happen |
78fed23c CF |
549 | else |
550 | news++; | |
551 | ||
552 | if (news == NULL) | |
22fe0c41 | 553 | child->saw_stars = 2; |
78fed23c CF |
554 | else |
555 | { | |
556 | s = news; | |
557 | if (*s == '*') | |
558 | { | |
22fe0c41 | 559 | SYSTEMTIME *st = syst (child->start_time); |
eedc36cb CF |
560 | fprintf (ofile, |
561 | "Date/Time: %d-%02d-%02d %02d:%02d:%02d\n", | |
562 | st->wYear, st->wMonth, st->wDay, st->wHour, | |
563 | st->wMinute, st->wSecond); | |
22fe0c41 | 564 | child->saw_stars++; |
78fed23c CF |
565 | } |
566 | } | |
567 | } | |
568 | } | |
569 | ||
22fe0c41 | 570 | long long d = usecs - child->last_usecs; |
78fed23c CF |
571 | char intbuf[40]; |
572 | ||
22fe0c41 | 573 | if (child->saw_stars < 2 || s != origs) |
eedc36cb | 574 | /* Nothing */ ; |
78fed23c CF |
575 | else if (hhmmss) |
576 | { | |
577 | s = ptrest - 9; | |
22fe0c41 | 578 | SYSTEMTIME *st = syst (child->start_time + (long long) usecs * 10); |
78fed23c CF |
579 | sprintf (s, "%02d:%02d:%02d", st->wHour, st->wMinute, st->wSecond); |
580 | *strchr (s, '\0') = ' '; | |
581 | } | |
582 | else if (!delta) | |
583 | s = ptusec; | |
584 | else | |
585 | { | |
586 | s = ptusec; | |
587 | sprintf (intbuf, "%5d ", (int) d); | |
588 | int len = strlen (intbuf); | |
589 | ||
590 | memcpy ((s -= len), intbuf, len); | |
591 | } | |
592 | ||
459a9561 CF |
593 | if (include_hex) |
594 | { | |
595 | s -= 8; | |
a593a4c5 | 596 | sprintf (s, "%p", (void *) n); |
459a9561 CF |
597 | strchr (s, '\0')[0] = ' '; |
598 | } | |
22fe0c41 | 599 | child->last_usecs = usecs; |
78fed23c | 600 | if (numerror || !output_winerror (ofile, s)) |
1fd5e000 | 601 | fputs (s, ofile); |
3c952fed CF |
602 | if (!bufsize) |
603 | fflush (ofile); | |
1fd5e000 CF |
604 | } |
605 | ||
6265ac10 | 606 | static DWORD |
d73f9745 | 607 | proc_child (unsigned mask, FILE *ofile, pid_t pid) |
1fd5e000 | 608 | { |
6265ac10 | 609 | DWORD res = 0; |
1fd5e000 | 610 | DEBUG_EVENT ev; |
86fbc3d9 ED |
611 | time_t cur_time, last_time; |
612 | ||
1fd5e000 | 613 | SetThreadPriority (GetCurrentThread (), THREAD_PRIORITY_HIGHEST); |
86fbc3d9 | 614 | last_time = time (NULL); |
1fd5e000 CF |
615 | while (1) |
616 | { | |
617 | BOOL debug_event = WaitForDebugEvent (&ev, 1000); | |
5e0d760f | 618 | DWORD status = DBG_CONTINUE; |
86fbc3d9 ED |
619 | |
620 | if (bufsize && flush_period > 0 && | |
621 | (cur_time = time (NULL)) >= last_time + flush_period) | |
622 | { | |
623 | last_time = cur_time; | |
624 | fflush (ofile); | |
625 | } | |
626 | ||
1fd5e000 CF |
627 | if (!debug_event) |
628 | continue; | |
629 | ||
d73f9745 CF |
630 | if (pid) |
631 | { | |
632 | (void) cygwin_internal (CW_STRACE_TOGGLE, pid); | |
633 | pid = 0; | |
634 | } | |
635 | ||
1fd5e000 CF |
636 | switch (ev.dwDebugEventCode) |
637 | { | |
638 | case CREATE_PROCESS_DEBUG_EVENT: | |
639 | if (ev.u.CreateProcessInfo.hFile) | |
640 | CloseHandle (ev.u.CreateProcessInfo.hFile); | |
1fd5e000 | 641 | add_child (ev.dwProcessId, ev.u.CreateProcessInfo.hProcess); |
1fd5e000 CF |
642 | break; |
643 | ||
644 | case CREATE_THREAD_DEBUG_EVENT: | |
1fd5e000 CF |
645 | break; |
646 | ||
647 | case LOAD_DLL_DEBUG_EVENT: | |
648 | if (ev.u.LoadDll.hFile) | |
649 | CloseHandle (ev.u.LoadDll.hFile); | |
650 | break; | |
651 | ||
652 | case OUTPUT_DEBUG_STRING_EVENT: | |
653 | handle_output_debug_string (ev.dwProcessId, | |
654 | ev.u.DebugString.lpDebugStringData, | |
655 | mask, ofile); | |
656 | break; | |
657 | ||
658 | case EXIT_PROCESS_DEBUG_EVENT: | |
6265ac10 | 659 | res = ev.u.ExitProcess.dwExitCode >> 8; |
daed3bec | 660 | remove_child (ev.dwProcessId); |
1fd5e000 | 661 | break; |
5e0d760f | 662 | case EXCEPTION_DEBUG_EVENT: |
5d970405 | 663 | if (ev.u.Exception.ExceptionRecord.ExceptionCode != STATUS_BREAKPOINT) |
5460fae7 CF |
664 | { |
665 | status = DBG_EXCEPTION_NOT_HANDLED; | |
5d970405 | 666 | if (ev.u.Exception.dwFirstChance) |
a35d9f1a | 667 | fprintf (ofile, "--- Process %lu, exception %p at %p\n", ev.dwProcessId, |
2971f076 | 668 | (void *) ev.u.Exception.ExceptionRecord.ExceptionCode, |
5d970405 | 669 | ev.u.Exception.ExceptionRecord.ExceptionAddress); |
5460fae7 | 670 | } |
5e0d760f | 671 | break; |
1fd5e000 | 672 | } |
5e0d760f | 673 | if (!ContinueDebugEvent (ev.dwProcessId, ev.dwThreadId, status)) |
1fd5e000 CF |
674 | error (0, "couldn't continue debug event, windows error %d", |
675 | GetLastError ()); | |
5d970405 | 676 | if (!processes) |
1fd5e000 CF |
677 | break; |
678 | } | |
6265ac10 CF |
679 | |
680 | return res; | |
1fd5e000 CF |
681 | } |
682 | ||
80082f1e CF |
683 | static void |
684 | dotoggle (pid_t pid) | |
685 | { | |
80082f1e CF |
686 | child_pid = (DWORD) cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid); |
687 | if (!child_pid) | |
688 | { | |
689 | warn (0, "no such cygwin pid - %d", pid); | |
690 | child_pid = pid; | |
691 | } | |
692 | if (cygwin_internal (CW_STRACE_TOGGLE, child_pid)) | |
693 | error (0, "failed to toggle tracing for process %d<%d>", pid, child_pid); | |
694 | ||
695 | return; | |
696 | } | |
697 | ||
6265ac10 | 698 | static DWORD |
de6f8362 | 699 | dostrace (unsigned mask, FILE *ofile, pid_t pid, char **argv) |
1fd5e000 | 700 | { |
de6f8362 CF |
701 | if (!pid) |
702 | create_child (argv); | |
703 | else | |
704 | attach_process (pid); | |
1fd5e000 | 705 | |
6265ac10 | 706 | return proc_child (mask, ofile, pid); |
1fd5e000 CF |
707 | } |
708 | ||
33f0f67d CV |
709 | typedef struct tag_mask_mnemonic |
710 | { | |
711 | unsigned long val; | |
712 | const char *text; | |
713 | } | |
714 | mask_mnemonic; | |
715 | ||
716 | static const mask_mnemonic mnemonic_table[] = { | |
717 | {_STRACE_ALL, "all"}, | |
718 | {_STRACE_FLUSH, "flush"}, | |
719 | {_STRACE_INHERIT, "inherit"}, | |
720 | {_STRACE_UHOH, "uhoh"}, | |
721 | {_STRACE_SYSCALL, "syscall"}, | |
722 | {_STRACE_STARTUP, "startup"}, | |
723 | {_STRACE_DEBUG, "debug"}, | |
724 | {_STRACE_PARANOID, "paranoid"}, | |
725 | {_STRACE_TERMIOS, "termios"}, | |
726 | {_STRACE_SELECT, "select"}, | |
727 | {_STRACE_WM, "wm"}, | |
728 | {_STRACE_SIGP, "sigp"}, | |
729 | {_STRACE_MINIMAL, "minimal"}, | |
730 | {_STRACE_EXITDUMP, "exitdump"}, | |
731 | {_STRACE_SYSTEM, "system"}, | |
732 | {_STRACE_NOMUTEX, "nomutex"}, | |
733 | {_STRACE_MALLOC, "malloc"}, | |
734 | {_STRACE_THREAD, "thread"}, | |
ff3e6bcb | 735 | {_STRACE_PTHREAD, "pthread"}, |
dbf41aee | 736 | {_STRACE_SPECIAL, "special"}, |
33f0f67d CV |
737 | {0, NULL} |
738 | }; | |
739 | ||
740 | static unsigned long | |
741 | mnemonic2ul (const char *nptr, char **endptr) | |
742 | { | |
743 | // Look up mnemonic in table, return value. | |
744 | // *endptr = ptr to char that breaks match. | |
745 | const mask_mnemonic *mnp = mnemonic_table; | |
746 | ||
747 | while (mnp->text != NULL) | |
748 | { | |
749 | if (strcmp (mnp->text, nptr) == 0) | |
750 | { | |
751 | // Found a match. | |
752 | if (endptr != NULL) | |
753 | { | |
754 | *endptr = ((char *) nptr) + strlen (mnp->text); | |
755 | } | |
756 | return mnp->val; | |
757 | } | |
758 | mnp++; | |
759 | } | |
760 | ||
761 | // Didn't find it. | |
762 | if (endptr != NULL) | |
763 | { | |
764 | *endptr = (char *) nptr; | |
765 | } | |
766 | return 0; | |
767 | } | |
768 | ||
769 | static unsigned long | |
770 | parse_mask (const char *ms, char **endptr) | |
771 | { | |
772 | const char *p = ms; | |
773 | char *newp; | |
774 | unsigned long retval = 0, thisval; | |
775 | const size_t bufsize = 16; | |
776 | char buffer[bufsize]; | |
777 | size_t len; | |
778 | ||
779 | while (*p != '\0') | |
780 | { | |
781 | // First extract the term, terminate it, and lowercase it. | |
782 | strncpy (buffer, p, bufsize); | |
783 | buffer[bufsize - 1] = '\0'; | |
784 | len = strcspn (buffer, "+,\0"); | |
785 | buffer[len] = '\0'; | |
786 | strlwr (buffer); | |
787 | ||
788 | // Check if this is a mnemonic. We have to do this first or strtoul() | |
789 | // will false-trigger on anything starting with "a" through "f". | |
790 | thisval = mnemonic2ul (buffer, &newp); | |
791 | if (buffer == newp) | |
792 | { | |
793 | // This term isn't mnemonic, check if it's hex. | |
794 | thisval = strtoul (buffer, &newp, 16); | |
795 | if (newp != buffer + len) | |
796 | { | |
797 | // Not hex either, syntax error. | |
798 | *endptr = (char *) p; | |
799 | return 0; | |
800 | } | |
801 | } | |
802 | ||
803 | p += len; | |
804 | retval += thisval; | |
805 | ||
806 | // Handle operators | |
807 | if (*p == '\0') | |
808 | break; | |
809 | if ((*p == '+') || (*p == ',')) | |
810 | { | |
811 | // For now these both equate to addition/ORing. Until we get | |
812 | // fancy and add things like "all-<something>", all we need do is | |
813 | // continue the looping. | |
814 | p++; | |
815 | continue; | |
816 | } | |
817 | else | |
818 | { | |
819 | // Syntax error | |
820 | *endptr = (char *) p; | |
821 | return 0; | |
822 | } | |
823 | } | |
824 | ||
825 | *endptr = (char *) p; | |
826 | return retval; | |
827 | } | |
828 | ||
829 | static void | |
ba692ae9 | 830 | usage (FILE *where = stderr) |
33f0f67d | 831 | { |
ba692ae9 CF |
832 | fprintf (where, "\ |
833 | Usage: %s [OPTIONS] <command-line>\n\ | |
80082f1e | 834 | Usage: %s [OPTIONS] -p <pid>\n\ |
aa275fe0 JDF |
835 | Trace system calls and signals\n\ |
836 | \n\ | |
48f939e2 CF |
837 | -b, --buffer-size=SIZE set size of output file buffer\n\ |
838 | -d, --no-delta don't display the delta-t microsecond timestamp\n\ | |
f69af9b3 | 839 | -f, --trace-children trace child processes (toggle - default true)\n\ |
ba692ae9 | 840 | -h, --help output usage information and exit\n\ |
48f939e2 | 841 | -m, --mask=MASK set message filter mask\n\ |
48f939e2 CF |
842 | -n, --crack-error-numbers output descriptive text instead of error\n\ |
843 | numbers for Windows errors\n\ | |
80082f1e CF |
844 | -o, --output=FILENAME set output file to FILENAME\n\ |
845 | -p, --pid=n attach to executing program with cygwin pid n\n\ | |
99b08560 | 846 | -q, --quiet suppress messages about attaching, detaching, etc.\n\ |
48f939e2 | 847 | -S, --flush-period=PERIOD flush buffered strace output every PERIOD secs\n\ |
ba692ae9 CF |
848 | -t, --timestamp use an absolute hh:mm:ss timestamp insted of \n\ |
849 | the default microsecond timestamp. Implies -d\n\ | |
80082f1e CF |
850 | -T, --toggle toggle tracing in a process already being\n\ |
851 | traced. Requires -p <pid>\n\ | |
801d6cc7 | 852 | -u, --usecs toggle printing of microseconds timestamp\n\ |
ba692ae9 | 853 | -v, --version output version information and exit\n\ |
48f939e2 | 854 | -w, --new-window spawn program under test in a new window\n\ |
80082f1e | 855 | \n", pgm, pgm); |
ba692ae9 CF |
856 | if ( where == stdout) |
857 | fprintf (stdout, "\ | |
33f0f67d CV |
858 | MASK can be any combination of the following mnemonics and/or hex values\n\ |
859 | (0x is optional). Combine masks with '+' or ',' like so:\n\ | |
860 | \n\ | |
861 | --mask=wm+system,malloc+0x00800\n\ | |
862 | \n\ | |
863 | Mnemonic Hex Corresponding Def Description\n\ | |
864 | =========================================================================\n\ | |
dbf41aee CF |
865 | all 0x000001 (_STRACE_ALL) All strace messages.\n\ |
866 | flush 0x000002 (_STRACE_FLUSH) Flush output buffer after each message.\n\ | |
867 | inherit 0x000004 (_STRACE_INHERIT) Children inherit mask from parent.\n\ | |
868 | uhoh 0x000008 (_STRACE_UHOH) Unusual or weird phenomenon.\n\ | |
869 | syscall 0x000010 (_STRACE_SYSCALL) System calls.\n\ | |
870 | startup 0x000020 (_STRACE_STARTUP) argc/envp printout at startup.\n\ | |
871 | debug 0x000040 (_STRACE_DEBUG) Info to help debugging. \n\ | |
872 | paranoid 0x000080 (_STRACE_PARANOID) Paranoid info.\n\ | |
873 | termios 0x000100 (_STRACE_TERMIOS) Info for debugging termios stuff.\n\ | |
874 | select 0x000200 (_STRACE_SELECT) Info on ugly select internals.\n\ | |
875 | wm 0x000400 (_STRACE_WM) Trace Windows msgs (enable _strace_wm).\n\ | |
876 | sigp 0x000800 (_STRACE_SIGP) Trace signal and process handling.\n\ | |
877 | minimal 0x001000 (_STRACE_MINIMAL) Very minimal strace output.\n\ | |
878 | pthread 0x002000 (_STRACE_PTHREAD) Pthread calls.\n\ | |
879 | exitdump 0x004000 (_STRACE_EXITDUMP) Dump strace cache on exit.\n\ | |
880 | system 0x008000 (_STRACE_SYSTEM) Serious error; goes to console and log.\n\ | |
881 | nomutex 0x010000 (_STRACE_NOMUTEX) Don't use mutex for synchronization.\n\ | |
882 | malloc 0x020000 (_STRACE_MALLOC) Trace malloc calls.\n\ | |
883 | thread 0x040000 (_STRACE_THREAD) Thread-locking calls.\n\ | |
884 | special 0x100000 (_STRACE_SPECIAL) Special debugging printfs for\n\ | |
885 | non-checked-in code\n\ | |
33f0f67d | 886 | "); |
ba692ae9 CF |
887 | if (where == stderr) |
888 | fprintf (stderr, "Try '%s --help' for more information.\n", pgm); | |
889 | exit (where == stderr ? 1 : 0 ); | |
33f0f67d CV |
890 | } |
891 | ||
892 | struct option longopts[] = { | |
33f0f67d | 893 | {"buffer-size", required_argument, NULL, 'b'}, |
de6f8362 CF |
894 | {"help", no_argument, NULL, 'h'}, |
895 | {"flush-period", required_argument, NULL, 'S'}, | |
459a9561 | 896 | {"hex", no_argument, NULL, 'H'}, |
33f0f67d | 897 | {"mask", required_argument, NULL, 'm'}, |
de6f8362 | 898 | {"new-window", no_argument, NULL, 'w'}, |
33f0f67d | 899 | {"output", required_argument, NULL, 'o'}, |
33f0f67d | 900 | {"no-delta", no_argument, NULL, 'd'}, |
de6f8362 | 901 | {"pid", required_argument, NULL, 'p'}, |
5d970405 | 902 | {"quiet", no_argument, NULL, 'q'}, |
33f0f67d | 903 | {"timestamp", no_argument, NULL, 't'}, |
80082f1e | 904 | {"toggle", no_argument, NULL, 'T'}, |
de6f8362 CF |
905 | {"trace-children", no_argument, NULL, 'f'}, |
906 | {"translate-error-numbers", no_argument, NULL, 'n'}, | |
907 | {"usecs", no_argument, NULL, 'u'}, | |
908 | {"version", no_argument, NULL, 'v'}, | |
33f0f67d CV |
909 | {NULL, 0, NULL, 0} |
910 | }; | |
911 | ||
5d970405 | 912 | static const char *const opts = "+b:dhHfm:no:p:qS:tTuvw"; |
33f0f67d | 913 | |
ba692ae9 CF |
914 | static void |
915 | print_version () | |
916 | { | |
917 | const char *v = strchr (version, ':'); | |
918 | int len; | |
919 | if (!v) | |
920 | { | |
921 | v = "?"; | |
922 | len = 1; | |
923 | } | |
924 | else | |
925 | { | |
926 | v += 2; | |
927 | len = strchr (v, ' ') - v; | |
928 | } | |
929 | printf ("\ | |
930 | %s (cygwin) %.*s\n\ | |
931 | System Trace\n\ | |
90253b82 | 932 | Copyright 2000, 2001, 2002, 2003, 2004, 2005 Red Hat, Inc.\n\ |
98467dae JDF |
933 | Compiled on %s\n\ |
934 | ", pgm, len, v, __DATE__); | |
ba692ae9 CF |
935 | } |
936 | ||
1fd5e000 | 937 | int |
eedc36cb | 938 | main (int argc, char **argv) |
1fd5e000 CF |
939 | { |
940 | unsigned mask = 0; | |
941 | FILE *ofile = NULL; | |
80082f1e | 942 | pid_t pid = 0; |
1fd5e000 | 943 | int opt; |
b841df79 | 944 | int toggle = 0; |
5d970405 | 945 | int sawquiet = -1; |
1fd5e000 | 946 | |
26c07f70 CF |
947 | if (load_cygwin ()) |
948 | { | |
949 | char **av = (char **) cygwin_internal (CW_ARGV); | |
cba3b11f | 950 | if (av && (DWORD) av != (DWORD) -1) |
26c07f70 CF |
951 | for (argc = 0, argv = av; *av; av++) |
952 | argc++; | |
953 | } | |
954 | ||
1fd5e000 CF |
955 | if (!(pgm = strrchr (*argv, '\\')) && !(pgm = strrchr (*argv, '/'))) |
956 | pgm = *argv; | |
957 | else | |
958 | pgm++; | |
959 | ||
33f0f67d | 960 | while ((opt = getopt_long (argc, argv, opts, longopts, NULL)) != EOF) |
1fd5e000 CF |
961 | switch (opt) |
962 | { | |
de6f8362 CF |
963 | case 'b': |
964 | bufsize = atoi (optarg); | |
33f0f67d | 965 | break; |
de6f8362 CF |
966 | case 'd': |
967 | delta ^= 1; | |
33f0f67d | 968 | break; |
1fd5e000 CF |
969 | case 'f': |
970 | forkdebug ^= 1; | |
971 | break; | |
de6f8362 CF |
972 | case 'h': |
973 | // Print help and exit | |
ba692ae9 | 974 | usage (stdout); |
3c952fed | 975 | break; |
459a9561 CF |
976 | case 'H': |
977 | include_hex ^= 1; | |
978 | break; | |
1fd5e000 | 979 | case 'm': |
33f0f67d CV |
980 | { |
981 | char *endptr; | |
982 | mask = parse_mask (optarg, &endptr); | |
983 | if (*endptr != '\0') | |
984 | { | |
985 | // Bad mask expression. | |
986 | error (0, "syntax error in mask expression \"%s\" near \ | |
987 | character #%d.\n", optarg, (int) (endptr - optarg), endptr); | |
988 | } | |
80082f1e | 989 | break; |
33f0f67d | 990 | } |
de6f8362 CF |
991 | case 'n': |
992 | numerror ^= 1; | |
993 | break; | |
1fd5e000 | 994 | case 'o': |
8b800efe | 995 | if ((ofile = fopen (cygpath (optarg, NULL), "wb")) == NULL) |
1fd5e000 CF |
996 | error (1, "can't open %s", optarg); |
997 | #ifdef F_SETFD | |
998 | (void) fcntl (fileno (ofile), F_SETFD, 0); | |
999 | #endif | |
1000 | break; | |
de6f8362 | 1001 | case 'p': |
7c518815 | 1002 | pid = strtoul (optarg, NULL, 10); |
5d970405 CF |
1003 | strace_active |= 2; |
1004 | break; | |
1005 | case 'q': | |
1006 | if (sawquiet < 0) | |
1007 | sawquiet = 1; | |
1008 | else | |
1009 | sawquiet ^= 1; | |
de6f8362 CF |
1010 | break; |
1011 | case 'S': | |
7c518815 | 1012 | flush_period = strtoul (optarg, NULL, 10); |
78fed23c | 1013 | break; |
1fd5e000 | 1014 | case 't': |
78fed23c CF |
1015 | hhmmss ^= 1; |
1016 | break; | |
80082f1e CF |
1017 | case 'T': |
1018 | toggle ^= 1; | |
1019 | break; | |
78fed23c | 1020 | case 'u': |
de6f8362 | 1021 | // FIXME: currently unimplemented |
801d6cc7 CF |
1022 | show_usecs ^= 1; |
1023 | delta ^= 1; | |
86fbc3d9 | 1024 | break; |
de6f8362 CF |
1025 | case 'v': |
1026 | // Print version info and exit | |
ba692ae9 CF |
1027 | print_version (); |
1028 | return 0; | |
86fbc3d9 ED |
1029 | case 'w': |
1030 | new_window ^= 1; | |
1031 | break; | |
80082f1e CF |
1032 | case '?': |
1033 | fprintf (stderr, "Try '%s --help' for more information.\n", pgm); | |
1034 | exit (1); | |
1fd5e000 CF |
1035 | } |
1036 | ||
80082f1e CF |
1037 | if (pid && argv[optind]) |
1038 | error (0, "cannot provide both a command line and a process id"); | |
1039 | ||
1040 | if (!pid && !argv[optind]) | |
1041 | error (0, "must provide either a command line or a process id"); | |
1042 | ||
1043 | if (toggle && !pid) | |
1044 | error (0, "must provide a process id to toggle tracing"); | |
ba692ae9 | 1045 | |
5d970405 CF |
1046 | if (!pid) |
1047 | quiet = sawquiet < 0 || !sawquiet; | |
1048 | else if (sawquiet < 0) | |
1049 | quiet = 0; | |
1050 | else | |
1051 | quiet = sawquiet; | |
1052 | ||
1fd5e000 | 1053 | if (!mask) |
7c03f799 | 1054 | mask = _STRACE_ALL; |
1fd5e000 | 1055 | |
3c952fed CF |
1056 | if (bufsize) |
1057 | setvbuf (ofile, (char *) alloca (bufsize), _IOFBF, bufsize); | |
1058 | ||
1fd5e000 CF |
1059 | if (!ofile) |
1060 | ofile = stdout; | |
1061 | ||
6265ac10 | 1062 | DWORD res = 0; |
80082f1e CF |
1063 | if (toggle) |
1064 | dotoggle (pid); | |
1065 | else | |
6265ac10 CF |
1066 | res = dostrace (mask, ofile, pid, argv + optind); |
1067 | return res; | |
1fd5e000 CF |
1068 | } |
1069 | ||
1070 | #undef CloseHandle | |
1071 | ||
1072 | static BOOL | |
1073 | close_handle (HANDLE h, DWORD ok) | |
1074 | { | |
1075 | child_list *c; | |
eedc36cb | 1076 | for (c = &children; (c = c->next) != NULL;) |
1fd5e000 CF |
1077 | if (c->hproc == h && c->id != ok) |
1078 | error (0, "Closing child handle %p", h); | |
1079 | return CloseHandle (h); | |
1080 | } |