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Commit | Line | Data |
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ce637855 CV |
1 | /* strace.cc |
2 | ||
99b08560 | 3 | Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Red Hat Inc. |
ce637855 CV |
4 | |
5 | Written by Chris Faylor <cgf@redhat.com> | |
6 | ||
7 | This file is part of Cygwin. | |
8 | ||
9 | This software is a copyrighted work licensed under the terms of the | |
10 | Cygwin license. Please consult the file "CYGWIN_LICENSE" for | |
11 | details. */ | |
12 | ||
de6f8362 | 13 | #define cygwin_internal cygwin_internal_dontuse |
1fd5e000 CF |
14 | #include <stdio.h> |
15 | #include <fcntl.h> | |
16 | #include <getopt.h> | |
17 | #include <stdarg.h> | |
18 | #include <string.h> | |
19 | #include <stdlib.h> | |
86fbc3d9 | 20 | #include <time.h> |
1fd5e000 CF |
21 | #include <windows.h> |
22 | #include <signal.h> | |
de6f8362 CF |
23 | #include <errno.h> |
24 | #include "cygwin/include/sys/strace.h" | |
25 | #include "cygwin/include/sys/cygwin.h" | |
229f2bb4 | 26 | #include "path.h" |
de6f8362 | 27 | #undef cygwin_internal |
1fd5e000 | 28 | |
b6e259b1 DD |
29 | /* we *know* we're being built with GCC */ |
30 | #define alloca __builtin_alloca | |
31 | ||
33f0f67d | 32 | // Version string. |
ba692ae9 | 33 | static const char version[] = "$Revision$"; |
33f0f67d | 34 | |
1fd5e000 | 35 | static const char *pgm; |
f69af9b3 | 36 | static int forkdebug = 1; |
78fed23c | 37 | static int numerror = 1; |
801d6cc7 | 38 | static int show_usecs = 1; |
78fed23c | 39 | static int delta = 1; |
5d970405 CF |
40 | static int hhmmss; |
41 | static int bufsize; | |
42 | static int new_window; | |
43 | static long flush_period; | |
44 | static int include_hex; | |
45 | static int quiet = -1; | |
46 | ||
47 | static unsigned char strace_active = 1; | |
48 | static int processes; | |
1fd5e000 CF |
49 | |
50 | static BOOL close_handle (HANDLE h, DWORD ok); | |
51 | ||
52 | #define CloseHandle(h) close_handle(h, 0) | |
53 | ||
54 | struct child_list | |
eedc36cb CF |
55 | { |
56 | DWORD id; | |
57 | HANDLE hproc; | |
58 | int saw_stars; | |
59 | char nfields; | |
60 | long long start_time; | |
61 | DWORD last_usecs; | |
62 | struct child_list *next; | |
63 | child_list ():id (0), hproc (NULL), saw_stars (0), nfields (0), | |
64 | start_time (0), last_usecs (0), next (NULL) | |
1fd5e000 | 65 | { |
eedc36cb CF |
66 | } |
67 | }; | |
1fd5e000 | 68 | |
22fe0c41 | 69 | child_list children; |
1fd5e000 CF |
70 | |
71 | static void | |
72 | warn (int geterrno, const char *fmt, ...) | |
73 | { | |
74 | va_list args; | |
75 | char buf[4096]; | |
76 | ||
77 | va_start (args, fmt); | |
78 | sprintf (buf, "%s: ", pgm); | |
79 | vsprintf (strchr (buf, '\0'), fmt, args); | |
80 | if (geterrno) | |
81 | perror (buf); | |
82 | else | |
83 | { | |
84 | fputs (buf, stderr); | |
85 | fputs ("\n", stderr); | |
86 | } | |
87 | } | |
88 | ||
89 | static void __attribute__ ((noreturn)) | |
90 | error (int geterrno, const char *fmt, ...) | |
91 | { | |
92 | va_list args; | |
93 | char buf[4096]; | |
94 | ||
95 | va_start (args, fmt); | |
96 | sprintf (buf, "%s: ", pgm); | |
97 | vsprintf (strchr (buf, '\0'), fmt, args); | |
98 | if (geterrno) | |
99 | perror (buf); | |
100 | else | |
101 | { | |
102 | fputs (buf, stderr); | |
103 | fputs ("\n", stderr); | |
104 | } | |
80082f1e | 105 | exit (1); |
1fd5e000 CF |
106 | } |
107 | ||
108 | DWORD lastid = 0; | |
109 | HANDLE lasth; | |
110 | ||
22fe0c41 CF |
111 | static child_list * |
112 | get_child (DWORD id) | |
1fd5e000 CF |
113 | { |
114 | child_list *c; | |
eedc36cb | 115 | for (c = &children; (c = c->next) != NULL;) |
1fd5e000 | 116 | if (c->id == id) |
22fe0c41 | 117 | return c; |
1fd5e000 | 118 | |
5d970405 CF |
119 | return NULL; |
120 | } | |
121 | ||
122 | static void | |
123 | add_child (DWORD id, HANDLE hproc) | |
124 | { | |
125 | if (!get_child (id)) | |
126 | { | |
127 | child_list *c = children.next; | |
128 | children.next = (child_list *) calloc (1, sizeof (child_list)); | |
129 | children.next->next = c; | |
130 | lastid = children.next->id = id; | |
131 | lasth = children.next->hproc = hproc; | |
132 | processes++; | |
133 | if (!quiet) | |
134 | fprintf (stderr, "Windows process %d attached\n", id); | |
135 | } | |
1fd5e000 CF |
136 | } |
137 | ||
138 | static void | |
daed3bec | 139 | remove_child (DWORD id) |
1fd5e000 CF |
140 | { |
141 | child_list *c; | |
142 | if (id == lastid) | |
143 | lastid = 0; | |
144 | for (c = &children; c->next != NULL; c = c->next) | |
145 | if (c->next->id == id) | |
146 | { | |
147 | child_list *c1 = c->next; | |
1fd5e000 | 148 | c->next = c1->next; |
cf737d6b | 149 | free (c1); |
5d970405 CF |
150 | if (!quiet) |
151 | fprintf (stderr, "Windows process %d detached\n", id); | |
152 | processes--; | |
1fd5e000 CF |
153 | return; |
154 | } | |
155 | ||
156 | error (0, "no process id %d found", id); | |
157 | } | |
158 | ||
159 | #define LINE_BUF_CHUNK 128 | |
160 | ||
161 | class linebuf | |
162 | { | |
163 | size_t alloc; | |
164 | public: | |
eedc36cb | 165 | size_t ix; |
1fd5e000 CF |
166 | char *buf; |
167 | linebuf () | |
168 | { | |
169 | ix = 0; | |
170 | alloc = 0; | |
171 | buf = NULL; | |
172 | } | |
eedc36cb CF |
173 | ~linebuf () |
174 | { | |
175 | if (buf) | |
176 | free (buf); | |
177 | } | |
1fd5e000 | 178 | void add (const char *what, int len); |
eedc36cb CF |
179 | void add (const char *what) |
180 | { | |
181 | add (what, strlen (what)); | |
182 | } | |
1fd5e000 CF |
183 | void prepend (const char *what, int len); |
184 | }; | |
185 | ||
186 | void | |
187 | linebuf::add (const char *what, int len) | |
188 | { | |
189 | size_t newix; | |
190 | if ((newix = ix + len) >= alloc) | |
191 | { | |
192 | alloc += LINE_BUF_CHUNK + len; | |
193 | buf = (char *) realloc (buf, alloc + 1); | |
194 | } | |
195 | memcpy (buf + ix, what, len); | |
196 | ix = newix; | |
197 | buf[ix] = '\0'; | |
198 | } | |
199 | ||
200 | void | |
201 | linebuf::prepend (const char *what, int len) | |
202 | { | |
203 | int buflen; | |
204 | size_t newix; | |
205 | if ((newix = ix + len) >= alloc) | |
206 | { | |
207 | alloc += LINE_BUF_CHUNK + len; | |
208 | buf = (char *) realloc (buf, alloc + 1); | |
209 | buf[ix] = '\0'; | |
210 | } | |
211 | if ((buflen = strlen (buf))) | |
eedc36cb | 212 | memmove (buf + len, buf, buflen + 1); |
1fd5e000 | 213 | else |
eedc36cb | 214 | buf[newix] = '\0'; |
1fd5e000 CF |
215 | memcpy (buf, what, len); |
216 | ix = newix; | |
217 | } | |
218 | ||
219 | static void | |
eedc36cb | 220 | make_command_line (linebuf & one_line, char **argv) |
1fd5e000 CF |
221 | { |
222 | for (; *argv; argv++) | |
223 | { | |
224 | char *p = NULL; | |
225 | const char *a = *argv; | |
226 | ||
227 | int len = strlen (a); | |
228 | if (len != 0 && !(p = strpbrk (a, " \t\n\r\""))) | |
229 | one_line.add (a, len); | |
230 | else | |
231 | { | |
232 | one_line.add ("\"", 1); | |
233 | for (; p; a = p, p = strchr (p, '"')) | |
234 | { | |
235 | one_line.add (a, ++p - a); | |
236 | if (p[-1] == '"') | |
237 | one_line.add ("\"", 1); | |
238 | } | |
239 | if (*a) | |
240 | one_line.add (a); | |
241 | one_line.add ("\"", 1); | |
242 | } | |
243 | one_line.add (" ", 1); | |
244 | } | |
245 | ||
246 | if (one_line.ix) | |
247 | one_line.buf[one_line.ix - 1] = '\0'; | |
248 | else | |
249 | one_line.add ("", 1); | |
250 | } | |
251 | ||
252 | static DWORD child_pid; | |
253 | ||
254 | static BOOL WINAPI | |
78fed23c | 255 | ctrl_c (DWORD) |
1fd5e000 CF |
256 | { |
257 | static int tic = 1; | |
258 | if ((tic ^= 1) && !GenerateConsoleCtrlEvent (CTRL_C_EVENT, 0)) | |
259 | error (0, "couldn't send CTRL-C to child, win32 error %d\n", | |
260 | GetLastError ()); | |
261 | return TRUE; | |
262 | } | |
263 | ||
ac674bc8 CF |
264 | extern "C" { |
265 | unsigned long (*cygwin_internal) (int, ...); | |
266 | }; | |
de6f8362 CF |
267 | |
268 | static int | |
269 | load_cygwin () | |
270 | { | |
271 | static HMODULE h; | |
272 | ||
273 | if (cygwin_internal) | |
274 | return 1; | |
275 | ||
276 | if (h) | |
277 | return 0; | |
278 | ||
279 | if (!(h = LoadLibrary ("cygwin1.dll"))) | |
280 | { | |
281 | errno = ENOENT; | |
282 | return 0; | |
283 | } | |
284 | if (!(cygwin_internal = (DWORD (*) (int, ...)) GetProcAddress (h, "cygwin_internal"))) | |
285 | { | |
286 | errno = ENOSYS; | |
287 | return 0; | |
288 | } | |
289 | return 1; | |
290 | } | |
291 | ||
292 | static void | |
293 | attach_process (pid_t pid) | |
294 | { | |
de6f8362 CF |
295 | child_pid = (DWORD) cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid); |
296 | if (!child_pid) | |
5d970405 | 297 | child_pid = pid; |
de6f8362 CF |
298 | |
299 | if (!DebugActiveProcess (child_pid)) | |
5d970405 | 300 | error (0, "couldn't attach to pid %d for debugging", child_pid); |
de6f8362 | 301 | |
de6f8362 CF |
302 | return; |
303 | } | |
304 | ||
305 | ||
1fd5e000 CF |
306 | static void |
307 | create_child (char **argv) | |
308 | { | |
309 | linebuf one_line; | |
310 | ||
311 | STARTUPINFO si; | |
312 | PROCESS_INFORMATION pi; | |
313 | BOOL ret; | |
314 | DWORD flags; | |
315 | ||
229f2bb4 | 316 | *argv = cygpath (*argv, NULL); |
1fd5e000 CF |
317 | memset (&si, 0, sizeof (si)); |
318 | si.cb = sizeof (si); | |
319 | ||
f69af9b3 | 320 | flags = CREATE_DEFAULT_ERROR_MODE |
80082f1e | 321 | | (forkdebug ? DEBUG_PROCESS : DEBUG_ONLY_THIS_PROCESS); |
f69af9b3 CF |
322 | if (new_window) |
323 | flags |= CREATE_NEW_CONSOLE | CREATE_NEW_PROCESS_GROUP; | |
1fd5e000 CF |
324 | |
325 | make_command_line (one_line, argv); | |
326 | ||
327 | SetConsoleCtrlHandler (NULL, 0); | |
eedc36cb | 328 | ret = CreateProcess (0, one_line.buf, /* command line */ |
1fd5e000 CF |
329 | NULL, /* Security */ |
330 | NULL, /* thread */ | |
331 | TRUE, /* inherit handles */ | |
332 | flags, /* start flags */ | |
eedc36cb CF |
333 | NULL, NULL, /* current directory */ |
334 | &si, &pi); | |
1fd5e000 | 335 | if (!ret) |
eedc36cb CF |
336 | error (0, "error creating process %s, (error %d)", *argv, |
337 | GetLastError ()); | |
1fd5e000 CF |
338 | |
339 | CloseHandle (pi.hThread); | |
340 | CloseHandle (pi.hProcess); | |
341 | child_pid = pi.dwProcessId; | |
342 | SetConsoleCtrlHandler (ctrl_c, 1); | |
343 | } | |
344 | ||
345 | static int | |
346 | output_winerror (FILE *ofile, char *s) | |
347 | { | |
348 | char *winerr = strstr (s, "Win32 error "); | |
349 | if (!winerr) | |
350 | return 0; | |
351 | ||
352 | DWORD errnum = atoi (winerr + sizeof ("Win32 error ") - 1); | |
353 | if (!errnum) | |
354 | return 0; | |
355 | ||
356 | /* | |
357 | * NOTE: Currently there is no policy for how long the | |
358 | * the buffers are, and looks like 256 is a smallest one | |
359 | * (dlfcn.cc). Other than error 1395 (length 213) and | |
360 | * error 1015 (length 249), the rest are all under 188 | |
361 | * characters, and so I'll use 189 as the buffer length. | |
362 | * For those longer error messages, FormatMessage will | |
363 | * return FALSE, and we'll get the old behaviour such as | |
364 | * ``Win32 error 1395'' etc. | |
365 | */ | |
366 | char buf[4096]; | |
367 | if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM | |
368 | | FORMAT_MESSAGE_IGNORE_INSERTS, | |
369 | NULL, | |
370 | errnum, | |
371 | MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT), | |
eedc36cb | 372 | (LPTSTR) buf, sizeof (buf), NULL)) |
1fd5e000 CF |
373 | return 0; |
374 | ||
375 | /* Get rid the trailing CR/NL pair. */ | |
376 | char *p = strchr (buf, '\0'); | |
377 | p[-2] = '\n'; | |
378 | p[-1] = '\0'; | |
379 | ||
380 | *winerr = '\0'; | |
381 | fputs (s, ofile); | |
382 | fputs (buf, ofile); | |
383 | return 1; | |
384 | } | |
385 | ||
78fed23c CF |
386 | static SYSTEMTIME * |
387 | syst (long long t) | |
388 | { | |
389 | FILETIME n; | |
390 | static SYSTEMTIME st; | |
801d6cc7 | 391 | long long now = t /*+ ((long long) usecs * 10)*/; |
78fed23c CF |
392 | n.dwHighDateTime = now >> 32; |
393 | n.dwLowDateTime = now & 0xffffffff; | |
394 | FileTimeToSystemTime (&n, &st); | |
395 | return &st; | |
396 | } | |
397 | ||
1fd5e000 CF |
398 | static void __stdcall |
399 | handle_output_debug_string (DWORD id, LPVOID p, unsigned mask, FILE *ofile) | |
400 | { | |
401 | int len; | |
402 | int special; | |
403 | char alen[3 + 8 + 1]; | |
404 | DWORD nbytes; | |
22fe0c41 | 405 | child_list *child = get_child (id); |
5d970405 CF |
406 | if (!child) |
407 | error (0, "no process id %d found", id); | |
22fe0c41 | 408 | HANDLE hchild = child->hproc; |
eedc36cb | 409 | #define INTROLEN (sizeof (alen) - 1) |
1fd5e000 CF |
410 | |
411 | if (id == lastid && hchild != lasth) | |
412 | warn (0, "%p != %p", hchild, lasth); | |
413 | ||
414 | alen[INTROLEN] = '\0'; | |
415 | if (!ReadProcessMemory (hchild, p, alen, INTROLEN, &nbytes)) | |
416 | #ifndef DEBUGGING | |
417 | return; | |
418 | #else | |
eedc36cb CF |
419 | error (0, |
420 | "couldn't get message length from subprocess %d<%p>, windows error %d", | |
1fd5e000 CF |
421 | id, hchild, GetLastError ()); |
422 | #endif | |
423 | ||
424 | if (strncmp (alen, "cYg", 3)) | |
425 | return; | |
426 | len = (int) strtoul (alen + 3, NULL, 16); | |
427 | if (!len) | |
428 | return; | |
429 | ||
430 | if (len > 0) | |
431 | special = 0; | |
432 | else | |
433 | { | |
434 | special = len; | |
5d970405 | 435 | if (special == _STRACE_INTERFACE_ACTIVATE_ADDR || special == _STRACE_CHILD_PID) |
1fd5e000 CF |
436 | len = 17; |
437 | } | |
78fed23c CF |
438 | |
439 | char *buf; | |
459a9561 | 440 | buf = (char *) alloca (len + 85) + 20; |
1fd5e000 CF |
441 | |
442 | if (!ReadProcessMemory (hchild, ((char *) p) + INTROLEN, buf, len, &nbytes)) | |
443 | error (0, "couldn't get message from subprocess, windows error %d", | |
444 | GetLastError ()); | |
445 | ||
446 | buf[len] = '\0'; | |
447 | char *s = strtok (buf, " "); | |
448 | ||
a593a4c5 | 449 | unsigned long n = strtoul (s, NULL, 16); |
1fd5e000 CF |
450 | |
451 | s = strchr (s, '\0') + 1; | |
452 | ||
5d970405 CF |
453 | if (special == _STRACE_CHILD_PID) |
454 | { | |
455 | if (!DebugActiveProcess (n)) | |
456 | error (0, "couldn't attach to subprocess %d for debugging, " | |
457 | "windows error %d", n, GetLastError ()); | |
458 | return; | |
459 | } | |
460 | ||
1fd5e000 CF |
461 | if (special == _STRACE_INTERFACE_ACTIVATE_ADDR) |
462 | { | |
5d970405 CF |
463 | if (!WriteProcessMemory (hchild, (LPVOID) n, &strace_active, |
464 | sizeof (strace_active), &nbytes)) | |
465 | error (0, "couldn't write strace flag to subprocess at %p, " | |
466 | "windows error %d", n, GetLastError ()); | |
1fd5e000 CF |
467 | return; |
468 | } | |
469 | ||
78fed23c CF |
470 | char *origs = s; |
471 | ||
1fd5e000 | 472 | if (mask & n) |
eedc36cb | 473 | /* got it */ ; |
1fd5e000 | 474 | else if (!(mask & _STRACE_ALL) || (n & _STRACE_NOTALL)) |
eedc36cb | 475 | return; /* This should not be included in "all" output */ |
1fd5e000 | 476 | |
78fed23c CF |
477 | DWORD dusecs, usecs; |
478 | char *ptusec, *ptrest; | |
479 | ||
480 | dusecs = strtoul (s, &ptusec, 10); | |
481 | char *q = ptusec; | |
482 | while (*q == ' ') | |
483 | q++; | |
484 | if (*q != '[') | |
485 | { | |
486 | usecs = strtoul (q, &ptrest, 10); | |
487 | while (*ptrest == ' ') | |
488 | ptrest++; | |
489 | } | |
490 | else | |
491 | { | |
492 | ptrest = q; | |
801d6cc7 | 493 | ptusec = show_usecs ? s : ptrest; |
78fed23c CF |
494 | usecs = dusecs; |
495 | } | |
496 | ||
22fe0c41 | 497 | if (child->saw_stars == 0) |
78fed23c CF |
498 | { |
499 | FILETIME st; | |
500 | char *news; | |
501 | ||
502 | GetSystemTimeAsFileTime (&st); | |
503 | FileTimeToLocalFileTime (&st, &st); | |
22fe0c41 CF |
504 | child->start_time = st.dwHighDateTime; |
505 | child->start_time <<= 32; | |
506 | child->start_time |= st.dwLowDateTime; | |
78fed23c | 507 | if (*(news = ptrest) != '[') |
22fe0c41 | 508 | child->saw_stars = 2; |
78fed23c CF |
509 | else |
510 | { | |
22fe0c41 | 511 | child->saw_stars++; |
78fed23c | 512 | while ((news = strchr (news, ' ')) != NULL && *++news != '*') |
22fe0c41 | 513 | child->nfields++; |
78fed23c | 514 | if (news == NULL) |
22fe0c41 | 515 | child->saw_stars++; |
78fed23c CF |
516 | else |
517 | { | |
518 | s = news; | |
22fe0c41 | 519 | child->nfields++; |
78fed23c CF |
520 | } |
521 | } | |
522 | } | |
22fe0c41 | 523 | else if (child->saw_stars < 2) |
78fed23c CF |
524 | { |
525 | int i; | |
526 | char *news; | |
527 | if (*(news = ptrest) != '[') | |
22fe0c41 | 528 | child->saw_stars = 2; |
78fed23c CF |
529 | else |
530 | { | |
22fe0c41 | 531 | for (i = 0; i < child->nfields; i++) |
78fed23c | 532 | if ((news = strchr (news, ' ')) == NULL) |
eedc36cb | 533 | break; // Should never happen |
78fed23c CF |
534 | else |
535 | news++; | |
536 | ||
537 | if (news == NULL) | |
22fe0c41 | 538 | child->saw_stars = 2; |
78fed23c CF |
539 | else |
540 | { | |
541 | s = news; | |
542 | if (*s == '*') | |
543 | { | |
22fe0c41 | 544 | SYSTEMTIME *st = syst (child->start_time); |
eedc36cb CF |
545 | fprintf (ofile, |
546 | "Date/Time: %d-%02d-%02d %02d:%02d:%02d\n", | |
547 | st->wYear, st->wMonth, st->wDay, st->wHour, | |
548 | st->wMinute, st->wSecond); | |
22fe0c41 | 549 | child->saw_stars++; |
78fed23c CF |
550 | } |
551 | } | |
552 | } | |
553 | } | |
554 | ||
22fe0c41 | 555 | long long d = usecs - child->last_usecs; |
78fed23c CF |
556 | char intbuf[40]; |
557 | ||
22fe0c41 | 558 | if (child->saw_stars < 2 || s != origs) |
eedc36cb | 559 | /* Nothing */ ; |
78fed23c CF |
560 | else if (hhmmss) |
561 | { | |
562 | s = ptrest - 9; | |
22fe0c41 | 563 | SYSTEMTIME *st = syst (child->start_time + (long long) usecs * 10); |
78fed23c CF |
564 | sprintf (s, "%02d:%02d:%02d", st->wHour, st->wMinute, st->wSecond); |
565 | *strchr (s, '\0') = ' '; | |
566 | } | |
567 | else if (!delta) | |
568 | s = ptusec; | |
569 | else | |
570 | { | |
571 | s = ptusec; | |
572 | sprintf (intbuf, "%5d ", (int) d); | |
573 | int len = strlen (intbuf); | |
574 | ||
575 | memcpy ((s -= len), intbuf, len); | |
576 | } | |
577 | ||
459a9561 CF |
578 | if (include_hex) |
579 | { | |
580 | s -= 8; | |
a593a4c5 | 581 | sprintf (s, "%p", (void *) n); |
459a9561 CF |
582 | strchr (s, '\0')[0] = ' '; |
583 | } | |
22fe0c41 | 584 | child->last_usecs = usecs; |
78fed23c | 585 | if (numerror || !output_winerror (ofile, s)) |
1fd5e000 | 586 | fputs (s, ofile); |
3c952fed CF |
587 | if (!bufsize) |
588 | fflush (ofile); | |
1fd5e000 CF |
589 | } |
590 | ||
6265ac10 | 591 | static DWORD |
d73f9745 | 592 | proc_child (unsigned mask, FILE *ofile, pid_t pid) |
1fd5e000 | 593 | { |
6265ac10 | 594 | DWORD res = 0; |
1fd5e000 | 595 | DEBUG_EVENT ev; |
86fbc3d9 ED |
596 | time_t cur_time, last_time; |
597 | ||
1fd5e000 | 598 | SetThreadPriority (GetCurrentThread (), THREAD_PRIORITY_HIGHEST); |
86fbc3d9 | 599 | last_time = time (NULL); |
1fd5e000 CF |
600 | while (1) |
601 | { | |
602 | BOOL debug_event = WaitForDebugEvent (&ev, 1000); | |
5e0d760f | 603 | DWORD status = DBG_CONTINUE; |
86fbc3d9 ED |
604 | |
605 | if (bufsize && flush_period > 0 && | |
606 | (cur_time = time (NULL)) >= last_time + flush_period) | |
607 | { | |
608 | last_time = cur_time; | |
609 | fflush (ofile); | |
610 | } | |
611 | ||
1fd5e000 CF |
612 | if (!debug_event) |
613 | continue; | |
614 | ||
d73f9745 CF |
615 | if (pid) |
616 | { | |
617 | (void) cygwin_internal (CW_STRACE_TOGGLE, pid); | |
618 | pid = 0; | |
619 | } | |
620 | ||
1fd5e000 CF |
621 | switch (ev.dwDebugEventCode) |
622 | { | |
623 | case CREATE_PROCESS_DEBUG_EVENT: | |
624 | if (ev.u.CreateProcessInfo.hFile) | |
625 | CloseHandle (ev.u.CreateProcessInfo.hFile); | |
1fd5e000 | 626 | add_child (ev.dwProcessId, ev.u.CreateProcessInfo.hProcess); |
1fd5e000 CF |
627 | break; |
628 | ||
629 | case CREATE_THREAD_DEBUG_EVENT: | |
1fd5e000 CF |
630 | break; |
631 | ||
632 | case LOAD_DLL_DEBUG_EVENT: | |
633 | if (ev.u.LoadDll.hFile) | |
634 | CloseHandle (ev.u.LoadDll.hFile); | |
635 | break; | |
636 | ||
637 | case OUTPUT_DEBUG_STRING_EVENT: | |
638 | handle_output_debug_string (ev.dwProcessId, | |
639 | ev.u.DebugString.lpDebugStringData, | |
640 | mask, ofile); | |
641 | break; | |
642 | ||
643 | case EXIT_PROCESS_DEBUG_EVENT: | |
6265ac10 | 644 | res = ev.u.ExitProcess.dwExitCode >> 8; |
daed3bec | 645 | remove_child (ev.dwProcessId); |
1fd5e000 | 646 | break; |
5e0d760f | 647 | case EXCEPTION_DEBUG_EVENT: |
5d970405 | 648 | if (ev.u.Exception.ExceptionRecord.ExceptionCode != STATUS_BREAKPOINT) |
5460fae7 CF |
649 | { |
650 | status = DBG_EXCEPTION_NOT_HANDLED; | |
5d970405 CF |
651 | if (ev.u.Exception.dwFirstChance) |
652 | fprintf (ofile, "--- Process %u, exception %p at %p\n", ev.dwProcessId, | |
653 | ev.u.Exception.ExceptionRecord.ExceptionCode, | |
654 | ev.u.Exception.ExceptionRecord.ExceptionAddress); | |
5460fae7 | 655 | } |
5e0d760f | 656 | break; |
1fd5e000 | 657 | } |
5e0d760f | 658 | if (!ContinueDebugEvent (ev.dwProcessId, ev.dwThreadId, status)) |
1fd5e000 CF |
659 | error (0, "couldn't continue debug event, windows error %d", |
660 | GetLastError ()); | |
5d970405 | 661 | if (!processes) |
1fd5e000 CF |
662 | break; |
663 | } | |
6265ac10 CF |
664 | |
665 | return res; | |
1fd5e000 CF |
666 | } |
667 | ||
80082f1e CF |
668 | static void |
669 | dotoggle (pid_t pid) | |
670 | { | |
80082f1e CF |
671 | child_pid = (DWORD) cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid); |
672 | if (!child_pid) | |
673 | { | |
674 | warn (0, "no such cygwin pid - %d", pid); | |
675 | child_pid = pid; | |
676 | } | |
677 | if (cygwin_internal (CW_STRACE_TOGGLE, child_pid)) | |
678 | error (0, "failed to toggle tracing for process %d<%d>", pid, child_pid); | |
679 | ||
680 | return; | |
681 | } | |
682 | ||
6265ac10 | 683 | static DWORD |
de6f8362 | 684 | dostrace (unsigned mask, FILE *ofile, pid_t pid, char **argv) |
1fd5e000 | 685 | { |
de6f8362 CF |
686 | if (!pid) |
687 | create_child (argv); | |
688 | else | |
689 | attach_process (pid); | |
1fd5e000 | 690 | |
6265ac10 | 691 | return proc_child (mask, ofile, pid); |
1fd5e000 CF |
692 | } |
693 | ||
33f0f67d CV |
694 | typedef struct tag_mask_mnemonic |
695 | { | |
696 | unsigned long val; | |
697 | const char *text; | |
698 | } | |
699 | mask_mnemonic; | |
700 | ||
701 | static const mask_mnemonic mnemonic_table[] = { | |
702 | {_STRACE_ALL, "all"}, | |
703 | {_STRACE_FLUSH, "flush"}, | |
704 | {_STRACE_INHERIT, "inherit"}, | |
705 | {_STRACE_UHOH, "uhoh"}, | |
706 | {_STRACE_SYSCALL, "syscall"}, | |
707 | {_STRACE_STARTUP, "startup"}, | |
708 | {_STRACE_DEBUG, "debug"}, | |
709 | {_STRACE_PARANOID, "paranoid"}, | |
710 | {_STRACE_TERMIOS, "termios"}, | |
711 | {_STRACE_SELECT, "select"}, | |
712 | {_STRACE_WM, "wm"}, | |
713 | {_STRACE_SIGP, "sigp"}, | |
714 | {_STRACE_MINIMAL, "minimal"}, | |
715 | {_STRACE_EXITDUMP, "exitdump"}, | |
716 | {_STRACE_SYSTEM, "system"}, | |
717 | {_STRACE_NOMUTEX, "nomutex"}, | |
718 | {_STRACE_MALLOC, "malloc"}, | |
719 | {_STRACE_THREAD, "thread"}, | |
720 | {0, NULL} | |
721 | }; | |
722 | ||
723 | static unsigned long | |
724 | mnemonic2ul (const char *nptr, char **endptr) | |
725 | { | |
726 | // Look up mnemonic in table, return value. | |
727 | // *endptr = ptr to char that breaks match. | |
728 | const mask_mnemonic *mnp = mnemonic_table; | |
729 | ||
730 | while (mnp->text != NULL) | |
731 | { | |
732 | if (strcmp (mnp->text, nptr) == 0) | |
733 | { | |
734 | // Found a match. | |
735 | if (endptr != NULL) | |
736 | { | |
737 | *endptr = ((char *) nptr) + strlen (mnp->text); | |
738 | } | |
739 | return mnp->val; | |
740 | } | |
741 | mnp++; | |
742 | } | |
743 | ||
744 | // Didn't find it. | |
745 | if (endptr != NULL) | |
746 | { | |
747 | *endptr = (char *) nptr; | |
748 | } | |
749 | return 0; | |
750 | } | |
751 | ||
752 | static unsigned long | |
753 | parse_mask (const char *ms, char **endptr) | |
754 | { | |
755 | const char *p = ms; | |
756 | char *newp; | |
757 | unsigned long retval = 0, thisval; | |
758 | const size_t bufsize = 16; | |
759 | char buffer[bufsize]; | |
760 | size_t len; | |
761 | ||
762 | while (*p != '\0') | |
763 | { | |
764 | // First extract the term, terminate it, and lowercase it. | |
765 | strncpy (buffer, p, bufsize); | |
766 | buffer[bufsize - 1] = '\0'; | |
767 | len = strcspn (buffer, "+,\0"); | |
768 | buffer[len] = '\0'; | |
769 | strlwr (buffer); | |
770 | ||
771 | // Check if this is a mnemonic. We have to do this first or strtoul() | |
772 | // will false-trigger on anything starting with "a" through "f". | |
773 | thisval = mnemonic2ul (buffer, &newp); | |
774 | if (buffer == newp) | |
775 | { | |
776 | // This term isn't mnemonic, check if it's hex. | |
777 | thisval = strtoul (buffer, &newp, 16); | |
778 | if (newp != buffer + len) | |
779 | { | |
780 | // Not hex either, syntax error. | |
781 | *endptr = (char *) p; | |
782 | return 0; | |
783 | } | |
784 | } | |
785 | ||
786 | p += len; | |
787 | retval += thisval; | |
788 | ||
789 | // Handle operators | |
790 | if (*p == '\0') | |
791 | break; | |
792 | if ((*p == '+') || (*p == ',')) | |
793 | { | |
794 | // For now these both equate to addition/ORing. Until we get | |
795 | // fancy and add things like "all-<something>", all we need do is | |
796 | // continue the looping. | |
797 | p++; | |
798 | continue; | |
799 | } | |
800 | else | |
801 | { | |
802 | // Syntax error | |
803 | *endptr = (char *) p; | |
804 | return 0; | |
805 | } | |
806 | } | |
807 | ||
808 | *endptr = (char *) p; | |
809 | return retval; | |
810 | } | |
811 | ||
812 | static void | |
ba692ae9 | 813 | usage (FILE *where = stderr) |
33f0f67d | 814 | { |
ba692ae9 CF |
815 | fprintf (where, "\ |
816 | Usage: %s [OPTIONS] <command-line>\n\ | |
80082f1e | 817 | Usage: %s [OPTIONS] -p <pid>\n\ |
aa275fe0 JDF |
818 | Trace system calls and signals\n\ |
819 | \n\ | |
48f939e2 CF |
820 | -b, --buffer-size=SIZE set size of output file buffer\n\ |
821 | -d, --no-delta don't display the delta-t microsecond timestamp\n\ | |
f69af9b3 | 822 | -f, --trace-children trace child processes (toggle - default true)\n\ |
ba692ae9 | 823 | -h, --help output usage information and exit\n\ |
48f939e2 | 824 | -m, --mask=MASK set message filter mask\n\ |
48f939e2 CF |
825 | -n, --crack-error-numbers output descriptive text instead of error\n\ |
826 | numbers for Windows errors\n\ | |
80082f1e CF |
827 | -o, --output=FILENAME set output file to FILENAME\n\ |
828 | -p, --pid=n attach to executing program with cygwin pid n\n\ | |
99b08560 | 829 | -q, --quiet suppress messages about attaching, detaching, etc.\n\ |
48f939e2 | 830 | -S, --flush-period=PERIOD flush buffered strace output every PERIOD secs\n\ |
ba692ae9 CF |
831 | -t, --timestamp use an absolute hh:mm:ss timestamp insted of \n\ |
832 | the default microsecond timestamp. Implies -d\n\ | |
80082f1e CF |
833 | -T, --toggle toggle tracing in a process already being\n\ |
834 | traced. Requires -p <pid>\n\ | |
801d6cc7 | 835 | -u, --usecs toggle printing of microseconds timestamp\n\ |
ba692ae9 | 836 | -v, --version output version information and exit\n\ |
48f939e2 | 837 | -w, --new-window spawn program under test in a new window\n\ |
80082f1e | 838 | \n", pgm, pgm); |
ba692ae9 CF |
839 | if ( where == stdout) |
840 | fprintf (stdout, "\ | |
33f0f67d CV |
841 | MASK can be any combination of the following mnemonics and/or hex values\n\ |
842 | (0x is optional). Combine masks with '+' or ',' like so:\n\ | |
843 | \n\ | |
844 | --mask=wm+system,malloc+0x00800\n\ | |
845 | \n\ | |
846 | Mnemonic Hex Corresponding Def Description\n\ | |
847 | =========================================================================\n\ | |
848 | all 0x00001 (_STRACE_ALL) All strace messages.\n\ | |
849 | flush 0x00002 (_STRACE_FLUSH) Flush output buffer after each message.\n\ | |
850 | inherit 0x00004 (_STRACE_INHERIT) Children inherit mask from parent.\n\ | |
851 | uhoh 0x00008 (_STRACE_UHOH) Unusual or weird phenomenon.\n\ | |
852 | syscall 0x00010 (_STRACE_SYSCALL) System calls.\n\ | |
853 | startup 0x00020 (_STRACE_STARTUP) argc/envp printout at startup.\n\ | |
854 | debug 0x00040 (_STRACE_DEBUG) Info to help debugging. \n\ | |
855 | paranoid 0x00080 (_STRACE_PARANOID) Paranoid info.\n\ | |
856 | termios 0x00100 (_STRACE_TERMIOS) Info for debugging termios stuff.\n\ | |
857 | select 0x00200 (_STRACE_SELECT) Info on ugly select internals.\n\ | |
858 | wm 0x00400 (_STRACE_WM) Trace Windows msgs (enable _strace_wm).\n\ | |
859 | sigp 0x00800 (_STRACE_SIGP) Trace signal and process handling.\n\ | |
860 | minimal 0x01000 (_STRACE_MINIMAL) Very minimal strace output.\n\ | |
861 | exitdump 0x04000 (_STRACE_EXITDUMP) Dump strace cache on exit.\n\ | |
ba692ae9 | 862 | system 0x08000 (_STRACE_SYSTEM) Serious error; goes to console and log.\n\ |
33f0f67d CV |
863 | nomutex 0x10000 (_STRACE_NOMUTEX) Don't use mutex for synchronization.\n\ |
864 | malloc 0x20000 (_STRACE_MALLOC) Trace malloc calls.\n\ | |
865 | thread 0x40000 (_STRACE_THREAD) Thread-locking calls.\n\ | |
33f0f67d | 866 | "); |
ba692ae9 CF |
867 | if (where == stderr) |
868 | fprintf (stderr, "Try '%s --help' for more information.\n", pgm); | |
869 | exit (where == stderr ? 1 : 0 ); | |
33f0f67d CV |
870 | } |
871 | ||
872 | struct option longopts[] = { | |
33f0f67d | 873 | {"buffer-size", required_argument, NULL, 'b'}, |
de6f8362 CF |
874 | {"help", no_argument, NULL, 'h'}, |
875 | {"flush-period", required_argument, NULL, 'S'}, | |
459a9561 | 876 | {"hex", no_argument, NULL, 'H'}, |
33f0f67d | 877 | {"mask", required_argument, NULL, 'm'}, |
de6f8362 | 878 | {"new-window", no_argument, NULL, 'w'}, |
33f0f67d | 879 | {"output", required_argument, NULL, 'o'}, |
33f0f67d | 880 | {"no-delta", no_argument, NULL, 'd'}, |
de6f8362 | 881 | {"pid", required_argument, NULL, 'p'}, |
5d970405 | 882 | {"quiet", no_argument, NULL, 'q'}, |
33f0f67d | 883 | {"timestamp", no_argument, NULL, 't'}, |
80082f1e | 884 | {"toggle", no_argument, NULL, 'T'}, |
de6f8362 CF |
885 | {"trace-children", no_argument, NULL, 'f'}, |
886 | {"translate-error-numbers", no_argument, NULL, 'n'}, | |
887 | {"usecs", no_argument, NULL, 'u'}, | |
888 | {"version", no_argument, NULL, 'v'}, | |
33f0f67d CV |
889 | {NULL, 0, NULL, 0} |
890 | }; | |
891 | ||
5d970405 | 892 | static const char *const opts = "+b:dhHfm:no:p:qS:tTuvw"; |
33f0f67d | 893 | |
ba692ae9 CF |
894 | static void |
895 | print_version () | |
896 | { | |
897 | const char *v = strchr (version, ':'); | |
898 | int len; | |
899 | if (!v) | |
900 | { | |
901 | v = "?"; | |
902 | len = 1; | |
903 | } | |
904 | else | |
905 | { | |
906 | v += 2; | |
907 | len = strchr (v, ' ') - v; | |
908 | } | |
909 | printf ("\ | |
910 | %s (cygwin) %.*s\n\ | |
911 | System Trace\n\ | |
90253b82 | 912 | Copyright 2000, 2001, 2002, 2003, 2004, 2005 Red Hat, Inc.\n\ |
98467dae JDF |
913 | Compiled on %s\n\ |
914 | ", pgm, len, v, __DATE__); | |
ba692ae9 CF |
915 | } |
916 | ||
1fd5e000 | 917 | int |
eedc36cb | 918 | main (int argc, char **argv) |
1fd5e000 CF |
919 | { |
920 | unsigned mask = 0; | |
921 | FILE *ofile = NULL; | |
80082f1e | 922 | pid_t pid = 0; |
1fd5e000 | 923 | int opt; |
b841df79 | 924 | int toggle = 0; |
5d970405 | 925 | int sawquiet = -1; |
1fd5e000 | 926 | |
26c07f70 CF |
927 | if (load_cygwin ()) |
928 | { | |
929 | char **av = (char **) cygwin_internal (CW_ARGV); | |
cba3b11f | 930 | if (av && (DWORD) av != (DWORD) -1) |
26c07f70 CF |
931 | for (argc = 0, argv = av; *av; av++) |
932 | argc++; | |
933 | } | |
934 | ||
1fd5e000 CF |
935 | if (!(pgm = strrchr (*argv, '\\')) && !(pgm = strrchr (*argv, '/'))) |
936 | pgm = *argv; | |
937 | else | |
938 | pgm++; | |
939 | ||
33f0f67d | 940 | while ((opt = getopt_long (argc, argv, opts, longopts, NULL)) != EOF) |
1fd5e000 CF |
941 | switch (opt) |
942 | { | |
de6f8362 CF |
943 | case 'b': |
944 | bufsize = atoi (optarg); | |
33f0f67d | 945 | break; |
de6f8362 CF |
946 | case 'd': |
947 | delta ^= 1; | |
33f0f67d | 948 | break; |
1fd5e000 CF |
949 | case 'f': |
950 | forkdebug ^= 1; | |
951 | break; | |
de6f8362 CF |
952 | case 'h': |
953 | // Print help and exit | |
ba692ae9 | 954 | usage (stdout); |
3c952fed | 955 | break; |
459a9561 CF |
956 | case 'H': |
957 | include_hex ^= 1; | |
958 | break; | |
1fd5e000 | 959 | case 'm': |
33f0f67d CV |
960 | { |
961 | char *endptr; | |
962 | mask = parse_mask (optarg, &endptr); | |
963 | if (*endptr != '\0') | |
964 | { | |
965 | // Bad mask expression. | |
966 | error (0, "syntax error in mask expression \"%s\" near \ | |
967 | character #%d.\n", optarg, (int) (endptr - optarg), endptr); | |
968 | } | |
80082f1e | 969 | break; |
33f0f67d | 970 | } |
de6f8362 CF |
971 | case 'n': |
972 | numerror ^= 1; | |
973 | break; | |
1fd5e000 | 974 | case 'o': |
229f2bb4 | 975 | if ((ofile = fopen (cygpath (optarg, NULL), "w")) == NULL) |
1fd5e000 CF |
976 | error (1, "can't open %s", optarg); |
977 | #ifdef F_SETFD | |
978 | (void) fcntl (fileno (ofile), F_SETFD, 0); | |
979 | #endif | |
980 | break; | |
de6f8362 | 981 | case 'p': |
7c518815 | 982 | pid = strtoul (optarg, NULL, 10); |
5d970405 CF |
983 | strace_active |= 2; |
984 | break; | |
985 | case 'q': | |
986 | if (sawquiet < 0) | |
987 | sawquiet = 1; | |
988 | else | |
989 | sawquiet ^= 1; | |
de6f8362 CF |
990 | break; |
991 | case 'S': | |
7c518815 | 992 | flush_period = strtoul (optarg, NULL, 10); |
78fed23c | 993 | break; |
1fd5e000 | 994 | case 't': |
78fed23c CF |
995 | hhmmss ^= 1; |
996 | break; | |
80082f1e CF |
997 | case 'T': |
998 | toggle ^= 1; | |
999 | break; | |
78fed23c | 1000 | case 'u': |
de6f8362 | 1001 | // FIXME: currently unimplemented |
801d6cc7 CF |
1002 | show_usecs ^= 1; |
1003 | delta ^= 1; | |
86fbc3d9 | 1004 | break; |
de6f8362 CF |
1005 | case 'v': |
1006 | // Print version info and exit | |
ba692ae9 CF |
1007 | print_version (); |
1008 | return 0; | |
86fbc3d9 ED |
1009 | case 'w': |
1010 | new_window ^= 1; | |
1011 | break; | |
80082f1e CF |
1012 | case '?': |
1013 | fprintf (stderr, "Try '%s --help' for more information.\n", pgm); | |
1014 | exit (1); | |
1fd5e000 CF |
1015 | } |
1016 | ||
80082f1e CF |
1017 | if (pid && argv[optind]) |
1018 | error (0, "cannot provide both a command line and a process id"); | |
1019 | ||
1020 | if (!pid && !argv[optind]) | |
1021 | error (0, "must provide either a command line or a process id"); | |
1022 | ||
1023 | if (toggle && !pid) | |
1024 | error (0, "must provide a process id to toggle tracing"); | |
ba692ae9 | 1025 | |
5d970405 CF |
1026 | if (!pid) |
1027 | quiet = sawquiet < 0 || !sawquiet; | |
1028 | else if (sawquiet < 0) | |
1029 | quiet = 0; | |
1030 | else | |
1031 | quiet = sawquiet; | |
1032 | ||
1fd5e000 | 1033 | if (!mask) |
7c03f799 | 1034 | mask = _STRACE_ALL; |
1fd5e000 | 1035 | |
3c952fed CF |
1036 | if (bufsize) |
1037 | setvbuf (ofile, (char *) alloca (bufsize), _IOFBF, bufsize); | |
1038 | ||
1fd5e000 CF |
1039 | if (!ofile) |
1040 | ofile = stdout; | |
1041 | ||
6265ac10 | 1042 | DWORD res = 0; |
80082f1e CF |
1043 | if (toggle) |
1044 | dotoggle (pid); | |
1045 | else | |
6265ac10 CF |
1046 | res = dostrace (mask, ofile, pid, argv + optind); |
1047 | return res; | |
1fd5e000 CF |
1048 | } |
1049 | ||
1050 | #undef CloseHandle | |
1051 | ||
1052 | static BOOL | |
1053 | close_handle (HANDLE h, DWORD ok) | |
1054 | { | |
1055 | child_list *c; | |
eedc36cb | 1056 | for (c = &children; (c = c->next) != NULL;) |
1fd5e000 CF |
1057 | if (c->hproc == h && c->id != ok) |
1058 | error (0, "Closing child handle %p", h); | |
1059 | return CloseHandle (h); | |
1060 | } |