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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" |
02a7f96e | 30 | #include "ddk/ntapi.h" |
1fd5e000 | 31 | |
b6e259b1 DD |
32 | /* we *know* we're being built with GCC */ |
33 | #define alloca __builtin_alloca | |
34 | ||
33f0f67d | 35 | // Version string. |
ba692ae9 | 36 | static const char version[] = "$Revision$"; |
33f0f67d | 37 | |
1fd5e000 | 38 | static const char *pgm; |
f69af9b3 | 39 | static int forkdebug = 1; |
78fed23c | 40 | static int numerror = 1; |
801d6cc7 | 41 | static int show_usecs = 1; |
78fed23c | 42 | static int delta = 1; |
5d970405 CF |
43 | static int hhmmss; |
44 | static int bufsize; | |
45 | static int new_window; | |
46 | static long flush_period; | |
47 | static int include_hex; | |
48 | static int quiet = -1; | |
49 | ||
50 | static unsigned char strace_active = 1; | |
51 | static int processes; | |
1fd5e000 CF |
52 | |
53 | static BOOL close_handle (HANDLE h, DWORD ok); | |
54 | ||
55 | #define CloseHandle(h) close_handle(h, 0) | |
56 | ||
57 | struct child_list | |
eedc36cb CF |
58 | { |
59 | DWORD id; | |
60 | HANDLE hproc; | |
61 | int saw_stars; | |
62 | char nfields; | |
63 | long long start_time; | |
64 | DWORD last_usecs; | |
65 | struct child_list *next; | |
66 | child_list ():id (0), hproc (NULL), saw_stars (0), nfields (0), | |
67 | start_time (0), last_usecs (0), next (NULL) | |
1fd5e000 | 68 | { |
eedc36cb CF |
69 | } |
70 | }; | |
1fd5e000 | 71 | |
22fe0c41 | 72 | child_list children; |
1fd5e000 CF |
73 | |
74 | static void | |
75 | warn (int geterrno, const char *fmt, ...) | |
76 | { | |
77 | va_list args; | |
78 | char buf[4096]; | |
79 | ||
80 | va_start (args, fmt); | |
81 | sprintf (buf, "%s: ", pgm); | |
82 | vsprintf (strchr (buf, '\0'), fmt, args); | |
83 | if (geterrno) | |
84 | perror (buf); | |
85 | else | |
86 | { | |
87 | fputs (buf, stderr); | |
88 | fputs ("\n", stderr); | |
89 | } | |
90 | } | |
91 | ||
92 | static void __attribute__ ((noreturn)) | |
93 | error (int geterrno, const char *fmt, ...) | |
94 | { | |
95 | va_list args; | |
96 | char buf[4096]; | |
97 | ||
98 | va_start (args, fmt); | |
99 | sprintf (buf, "%s: ", pgm); | |
100 | vsprintf (strchr (buf, '\0'), fmt, args); | |
101 | if (geterrno) | |
102 | perror (buf); | |
103 | else | |
104 | { | |
105 | fputs (buf, stderr); | |
106 | fputs ("\n", stderr); | |
107 | } | |
80082f1e | 108 | exit (1); |
1fd5e000 CF |
109 | } |
110 | ||
111 | DWORD lastid = 0; | |
112 | HANDLE lasth; | |
113 | ||
22fe0c41 CF |
114 | static child_list * |
115 | get_child (DWORD id) | |
1fd5e000 CF |
116 | { |
117 | child_list *c; | |
eedc36cb | 118 | for (c = &children; (c = c->next) != NULL;) |
1fd5e000 | 119 | if (c->id == id) |
22fe0c41 | 120 | return c; |
1fd5e000 | 121 | |
5d970405 CF |
122 | return NULL; |
123 | } | |
124 | ||
125 | static void | |
126 | add_child (DWORD id, HANDLE hproc) | |
127 | { | |
128 | if (!get_child (id)) | |
129 | { | |
130 | child_list *c = children.next; | |
131 | children.next = (child_list *) calloc (1, sizeof (child_list)); | |
132 | children.next->next = c; | |
133 | lastid = children.next->id = id; | |
134 | lasth = children.next->hproc = hproc; | |
135 | processes++; | |
136 | if (!quiet) | |
a35d9f1a | 137 | fprintf (stderr, "Windows process %lu attached\n", id); |
5d970405 | 138 | } |
1fd5e000 CF |
139 | } |
140 | ||
141 | static void | |
daed3bec | 142 | remove_child (DWORD id) |
1fd5e000 CF |
143 | { |
144 | child_list *c; | |
145 | if (id == lastid) | |
146 | lastid = 0; | |
147 | for (c = &children; c->next != NULL; c = c->next) | |
148 | if (c->next->id == id) | |
149 | { | |
150 | child_list *c1 = c->next; | |
1fd5e000 | 151 | c->next = c1->next; |
cf737d6b | 152 | free (c1); |
5d970405 | 153 | if (!quiet) |
a35d9f1a | 154 | fprintf (stderr, "Windows process %lu detached\n", id); |
5d970405 | 155 | processes--; |
1fd5e000 CF |
156 | return; |
157 | } | |
158 | ||
159 | error (0, "no process id %d found", id); | |
160 | } | |
161 | ||
162 | #define LINE_BUF_CHUNK 128 | |
163 | ||
164 | class linebuf | |
165 | { | |
166 | size_t alloc; | |
167 | public: | |
eedc36cb | 168 | size_t ix; |
1fd5e000 CF |
169 | char *buf; |
170 | linebuf () | |
171 | { | |
172 | ix = 0; | |
173 | alloc = 0; | |
174 | buf = NULL; | |
175 | } | |
eedc36cb CF |
176 | ~linebuf () |
177 | { | |
178 | if (buf) | |
179 | free (buf); | |
180 | } | |
1fd5e000 | 181 | void add (const char *what, int len); |
eedc36cb CF |
182 | void add (const char *what) |
183 | { | |
184 | add (what, strlen (what)); | |
185 | } | |
1fd5e000 CF |
186 | void prepend (const char *what, int len); |
187 | }; | |
188 | ||
189 | void | |
190 | linebuf::add (const char *what, int len) | |
191 | { | |
192 | size_t newix; | |
193 | if ((newix = ix + len) >= alloc) | |
194 | { | |
195 | alloc += LINE_BUF_CHUNK + len; | |
196 | buf = (char *) realloc (buf, alloc + 1); | |
197 | } | |
198 | memcpy (buf + ix, what, len); | |
199 | ix = newix; | |
200 | buf[ix] = '\0'; | |
201 | } | |
202 | ||
203 | void | |
204 | linebuf::prepend (const char *what, int len) | |
205 | { | |
206 | int buflen; | |
207 | size_t newix; | |
208 | if ((newix = ix + len) >= alloc) | |
209 | { | |
210 | alloc += LINE_BUF_CHUNK + len; | |
211 | buf = (char *) realloc (buf, alloc + 1); | |
212 | buf[ix] = '\0'; | |
213 | } | |
214 | if ((buflen = strlen (buf))) | |
eedc36cb | 215 | memmove (buf + len, buf, buflen + 1); |
1fd5e000 | 216 | else |
eedc36cb | 217 | buf[newix] = '\0'; |
1fd5e000 CF |
218 | memcpy (buf, what, len); |
219 | ix = newix; | |
220 | } | |
221 | ||
222 | static void | |
eedc36cb | 223 | make_command_line (linebuf & one_line, char **argv) |
1fd5e000 CF |
224 | { |
225 | for (; *argv; argv++) | |
226 | { | |
227 | char *p = NULL; | |
228 | const char *a = *argv; | |
229 | ||
230 | int len = strlen (a); | |
231 | if (len != 0 && !(p = strpbrk (a, " \t\n\r\""))) | |
232 | one_line.add (a, len); | |
233 | else | |
234 | { | |
235 | one_line.add ("\"", 1); | |
236 | for (; p; a = p, p = strchr (p, '"')) | |
237 | { | |
238 | one_line.add (a, ++p - a); | |
239 | if (p[-1] == '"') | |
240 | one_line.add ("\"", 1); | |
241 | } | |
242 | if (*a) | |
243 | one_line.add (a); | |
244 | one_line.add ("\"", 1); | |
245 | } | |
246 | one_line.add (" ", 1); | |
247 | } | |
248 | ||
249 | if (one_line.ix) | |
250 | one_line.buf[one_line.ix - 1] = '\0'; | |
251 | else | |
252 | one_line.add ("", 1); | |
253 | } | |
254 | ||
255 | static DWORD child_pid; | |
256 | ||
257 | static BOOL WINAPI | |
78fed23c | 258 | ctrl_c (DWORD) |
1fd5e000 CF |
259 | { |
260 | static int tic = 1; | |
261 | if ((tic ^= 1) && !GenerateConsoleCtrlEvent (CTRL_C_EVENT, 0)) | |
262 | error (0, "couldn't send CTRL-C to child, win32 error %d\n", | |
263 | GetLastError ()); | |
264 | return TRUE; | |
265 | } | |
266 | ||
ac674bc8 CF |
267 | extern "C" { |
268 | unsigned long (*cygwin_internal) (int, ...); | |
b5f48aa9 | 269 | WCHAR cygwin_dll_path[32768]; |
ac674bc8 | 270 | }; |
de6f8362 CF |
271 | |
272 | static int | |
273 | load_cygwin () | |
274 | { | |
275 | static HMODULE h; | |
276 | ||
277 | if (cygwin_internal) | |
278 | return 1; | |
279 | ||
280 | if (h) | |
281 | return 0; | |
282 | ||
283 | if (!(h = LoadLibrary ("cygwin1.dll"))) | |
284 | { | |
285 | errno = ENOENT; | |
286 | return 0; | |
287 | } | |
b5f48aa9 | 288 | GetModuleFileNameW (h, cygwin_dll_path, 32768); |
de6f8362 CF |
289 | if (!(cygwin_internal = (DWORD (*) (int, ...)) GetProcAddress (h, "cygwin_internal"))) |
290 | { | |
291 | errno = ENOSYS; | |
292 | return 0; | |
293 | } | |
294 | return 1; | |
295 | } | |
296 | ||
02a7f96e JT |
297 | #define DEBUG_PROCESS_DETACH_ON_EXIT 0x00000001 |
298 | #define DEBUG_PROCESS_ONLY_THIS_PROCESS 0x00000002 | |
299 | ||
de6f8362 CF |
300 | static void |
301 | attach_process (pid_t pid) | |
302 | { | |
de6f8362 CF |
303 | child_pid = (DWORD) cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid); |
304 | if (!child_pid) | |
5d970405 | 305 | child_pid = pid; |
de6f8362 CF |
306 | |
307 | if (!DebugActiveProcess (child_pid)) | |
5d970405 | 308 | error (0, "couldn't attach to pid %d for debugging", child_pid); |
de6f8362 | 309 | |
02a7f96e JT |
310 | if (forkdebug) |
311 | { | |
312 | HANDLE h = OpenProcess(PROCESS_ALL_ACCESS, FALSE, child_pid); | |
313 | ||
314 | if (h) | |
315 | { | |
316 | /* Try to turn off DEBUG_ONLY_THIS_PROCESS so we can follow forks */ | |
317 | /* This is only supported on XP and later */ | |
318 | ULONG DebugFlags = DEBUG_PROCESS_DETACH_ON_EXIT; | |
319 | NTSTATUS status = NtSetInformationProcess(h, ProcessDebugFlags, &DebugFlags, sizeof(DebugFlags)); | |
320 | if (status) | |
321 | warn (0, "Could not clear DEBUG_ONLY_THIS_PROCESS (%x), will not trace child processes", status); | |
322 | ||
323 | CloseHandle(h); | |
324 | } | |
325 | } | |
326 | ||
de6f8362 CF |
327 | return; |
328 | } | |
329 | ||
330 | ||
1fd5e000 CF |
331 | static void |
332 | create_child (char **argv) | |
333 | { | |
334 | linebuf one_line; | |
335 | ||
336 | STARTUPINFO si; | |
337 | PROCESS_INFORMATION pi; | |
338 | BOOL ret; | |
339 | DWORD flags; | |
340 | ||
82f123e5 CF |
341 | if (strchr (*argv, '/')) |
342 | *argv = cygpath (*argv, NULL); | |
1fd5e000 CF |
343 | memset (&si, 0, sizeof (si)); |
344 | si.cb = sizeof (si); | |
345 | ||
f69af9b3 | 346 | flags = CREATE_DEFAULT_ERROR_MODE |
80082f1e | 347 | | (forkdebug ? DEBUG_PROCESS : DEBUG_ONLY_THIS_PROCESS); |
f69af9b3 CF |
348 | if (new_window) |
349 | flags |= CREATE_NEW_CONSOLE | CREATE_NEW_PROCESS_GROUP; | |
1fd5e000 CF |
350 | |
351 | make_command_line (one_line, argv); | |
352 | ||
353 | SetConsoleCtrlHandler (NULL, 0); | |
08825b6e CF |
354 | const char *cygwin_env = getenv ("CYGWIN"); |
355 | const char *space; | |
356 | if (cygwin_env) | |
357 | space = " "; | |
358 | else | |
359 | space = cygwin_env = ""; | |
360 | char *newenv = (char *) malloc (sizeof ("CYGWIN=noglob") + strlen (space) + strlen (cygwin_env)); | |
361 | sprintf (newenv, "CYGWIN=noglob%s%s", space, cygwin_env); | |
362 | _putenv (newenv); | |
eedc36cb | 363 | ret = CreateProcess (0, one_line.buf, /* command line */ |
1fd5e000 CF |
364 | NULL, /* Security */ |
365 | NULL, /* thread */ | |
366 | TRUE, /* inherit handles */ | |
367 | flags, /* start flags */ | |
08825b6e CF |
368 | NULL, /* default environment */ |
369 | NULL, /* current directory */ | |
eedc36cb | 370 | &si, &pi); |
1fd5e000 | 371 | if (!ret) |
eedc36cb CF |
372 | error (0, "error creating process %s, (error %d)", *argv, |
373 | GetLastError ()); | |
1fd5e000 CF |
374 | |
375 | CloseHandle (pi.hThread); | |
376 | CloseHandle (pi.hProcess); | |
377 | child_pid = pi.dwProcessId; | |
378 | SetConsoleCtrlHandler (ctrl_c, 1); | |
379 | } | |
380 | ||
381 | static int | |
382 | output_winerror (FILE *ofile, char *s) | |
383 | { | |
384 | char *winerr = strstr (s, "Win32 error "); | |
385 | if (!winerr) | |
386 | return 0; | |
387 | ||
388 | DWORD errnum = atoi (winerr + sizeof ("Win32 error ") - 1); | |
389 | if (!errnum) | |
390 | return 0; | |
391 | ||
392 | /* | |
393 | * NOTE: Currently there is no policy for how long the | |
394 | * the buffers are, and looks like 256 is a smallest one | |
395 | * (dlfcn.cc). Other than error 1395 (length 213) and | |
396 | * error 1015 (length 249), the rest are all under 188 | |
397 | * characters, and so I'll use 189 as the buffer length. | |
398 | * For those longer error messages, FormatMessage will | |
399 | * return FALSE, and we'll get the old behaviour such as | |
400 | * ``Win32 error 1395'' etc. | |
401 | */ | |
402 | char buf[4096]; | |
403 | if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM | |
404 | | FORMAT_MESSAGE_IGNORE_INSERTS, | |
405 | NULL, | |
406 | errnum, | |
407 | MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT), | |
eedc36cb | 408 | (LPTSTR) buf, sizeof (buf), NULL)) |
1fd5e000 CF |
409 | return 0; |
410 | ||
411 | /* Get rid the trailing CR/NL pair. */ | |
412 | char *p = strchr (buf, '\0'); | |
413 | p[-2] = '\n'; | |
414 | p[-1] = '\0'; | |
415 | ||
416 | *winerr = '\0'; | |
417 | fputs (s, ofile); | |
418 | fputs (buf, ofile); | |
419 | return 1; | |
420 | } | |
421 | ||
78fed23c CF |
422 | static SYSTEMTIME * |
423 | syst (long long t) | |
424 | { | |
425 | FILETIME n; | |
426 | static SYSTEMTIME st; | |
801d6cc7 | 427 | long long now = t /*+ ((long long) usecs * 10)*/; |
78fed23c CF |
428 | n.dwHighDateTime = now >> 32; |
429 | n.dwLowDateTime = now & 0xffffffff; | |
430 | FileTimeToSystemTime (&n, &st); | |
431 | return &st; | |
432 | } | |
433 | ||
1fd5e000 CF |
434 | static void __stdcall |
435 | handle_output_debug_string (DWORD id, LPVOID p, unsigned mask, FILE *ofile) | |
436 | { | |
437 | int len; | |
438 | int special; | |
439 | char alen[3 + 8 + 1]; | |
440 | DWORD nbytes; | |
22fe0c41 | 441 | child_list *child = get_child (id); |
5d970405 CF |
442 | if (!child) |
443 | error (0, "no process id %d found", id); | |
22fe0c41 | 444 | HANDLE hchild = child->hproc; |
eedc36cb | 445 | #define INTROLEN (sizeof (alen) - 1) |
1fd5e000 CF |
446 | |
447 | if (id == lastid && hchild != lasth) | |
448 | warn (0, "%p != %p", hchild, lasth); | |
449 | ||
450 | alen[INTROLEN] = '\0'; | |
451 | if (!ReadProcessMemory (hchild, p, alen, INTROLEN, &nbytes)) | |
452 | #ifndef DEBUGGING | |
453 | return; | |
454 | #else | |
eedc36cb CF |
455 | error (0, |
456 | "couldn't get message length from subprocess %d<%p>, windows error %d", | |
1fd5e000 CF |
457 | id, hchild, GetLastError ()); |
458 | #endif | |
459 | ||
460 | if (strncmp (alen, "cYg", 3)) | |
461 | return; | |
462 | len = (int) strtoul (alen + 3, NULL, 16); | |
463 | if (!len) | |
464 | return; | |
465 | ||
466 | if (len > 0) | |
467 | special = 0; | |
468 | else | |
469 | { | |
470 | special = len; | |
5d970405 | 471 | if (special == _STRACE_INTERFACE_ACTIVATE_ADDR || special == _STRACE_CHILD_PID) |
1fd5e000 CF |
472 | len = 17; |
473 | } | |
78fed23c CF |
474 | |
475 | char *buf; | |
459a9561 | 476 | buf = (char *) alloca (len + 85) + 20; |
1fd5e000 CF |
477 | |
478 | if (!ReadProcessMemory (hchild, ((char *) p) + INTROLEN, buf, len, &nbytes)) | |
479 | error (0, "couldn't get message from subprocess, windows error %d", | |
480 | GetLastError ()); | |
481 | ||
482 | buf[len] = '\0'; | |
483 | char *s = strtok (buf, " "); | |
484 | ||
a593a4c5 | 485 | unsigned long n = strtoul (s, NULL, 16); |
1fd5e000 CF |
486 | |
487 | s = strchr (s, '\0') + 1; | |
488 | ||
5d970405 CF |
489 | if (special == _STRACE_CHILD_PID) |
490 | { | |
5d970405 CF |
491 | return; |
492 | } | |
493 | ||
1fd5e000 CF |
494 | if (special == _STRACE_INTERFACE_ACTIVATE_ADDR) |
495 | { | |
5d970405 CF |
496 | if (!WriteProcessMemory (hchild, (LPVOID) n, &strace_active, |
497 | sizeof (strace_active), &nbytes)) | |
498 | error (0, "couldn't write strace flag to subprocess at %p, " | |
499 | "windows error %d", n, GetLastError ()); | |
1fd5e000 CF |
500 | return; |
501 | } | |
502 | ||
78fed23c CF |
503 | char *origs = s; |
504 | ||
1fd5e000 | 505 | if (mask & n) |
eedc36cb | 506 | /* got it */ ; |
1fd5e000 | 507 | else if (!(mask & _STRACE_ALL) || (n & _STRACE_NOTALL)) |
eedc36cb | 508 | return; /* This should not be included in "all" output */ |
1fd5e000 | 509 | |
78fed23c CF |
510 | DWORD dusecs, usecs; |
511 | char *ptusec, *ptrest; | |
512 | ||
513 | dusecs = strtoul (s, &ptusec, 10); | |
514 | char *q = ptusec; | |
515 | while (*q == ' ') | |
516 | q++; | |
517 | if (*q != '[') | |
518 | { | |
519 | usecs = strtoul (q, &ptrest, 10); | |
520 | while (*ptrest == ' ') | |
521 | ptrest++; | |
522 | } | |
523 | else | |
524 | { | |
525 | ptrest = q; | |
801d6cc7 | 526 | ptusec = show_usecs ? s : ptrest; |
78fed23c CF |
527 | usecs = dusecs; |
528 | } | |
529 | ||
22fe0c41 | 530 | if (child->saw_stars == 0) |
78fed23c CF |
531 | { |
532 | FILETIME st; | |
533 | char *news; | |
534 | ||
535 | GetSystemTimeAsFileTime (&st); | |
536 | FileTimeToLocalFileTime (&st, &st); | |
22fe0c41 CF |
537 | child->start_time = st.dwHighDateTime; |
538 | child->start_time <<= 32; | |
539 | child->start_time |= st.dwLowDateTime; | |
78fed23c | 540 | if (*(news = ptrest) != '[') |
22fe0c41 | 541 | child->saw_stars = 2; |
78fed23c CF |
542 | else |
543 | { | |
22fe0c41 | 544 | child->saw_stars++; |
78fed23c | 545 | while ((news = strchr (news, ' ')) != NULL && *++news != '*') |
22fe0c41 | 546 | child->nfields++; |
78fed23c | 547 | if (news == NULL) |
22fe0c41 | 548 | child->saw_stars++; |
78fed23c CF |
549 | else |
550 | { | |
551 | s = news; | |
22fe0c41 | 552 | child->nfields++; |
78fed23c CF |
553 | } |
554 | } | |
555 | } | |
22fe0c41 | 556 | else if (child->saw_stars < 2) |
78fed23c CF |
557 | { |
558 | int i; | |
559 | char *news; | |
560 | if (*(news = ptrest) != '[') | |
22fe0c41 | 561 | child->saw_stars = 2; |
78fed23c CF |
562 | else |
563 | { | |
22fe0c41 | 564 | for (i = 0; i < child->nfields; i++) |
78fed23c | 565 | if ((news = strchr (news, ' ')) == NULL) |
eedc36cb | 566 | break; // Should never happen |
78fed23c CF |
567 | else |
568 | news++; | |
569 | ||
570 | if (news == NULL) | |
22fe0c41 | 571 | child->saw_stars = 2; |
78fed23c CF |
572 | else |
573 | { | |
574 | s = news; | |
575 | if (*s == '*') | |
576 | { | |
22fe0c41 | 577 | SYSTEMTIME *st = syst (child->start_time); |
eedc36cb CF |
578 | fprintf (ofile, |
579 | "Date/Time: %d-%02d-%02d %02d:%02d:%02d\n", | |
580 | st->wYear, st->wMonth, st->wDay, st->wHour, | |
581 | st->wMinute, st->wSecond); | |
22fe0c41 | 582 | child->saw_stars++; |
78fed23c CF |
583 | } |
584 | } | |
585 | } | |
586 | } | |
587 | ||
22fe0c41 | 588 | long long d = usecs - child->last_usecs; |
78fed23c CF |
589 | char intbuf[40]; |
590 | ||
22fe0c41 | 591 | if (child->saw_stars < 2 || s != origs) |
eedc36cb | 592 | /* Nothing */ ; |
78fed23c CF |
593 | else if (hhmmss) |
594 | { | |
595 | s = ptrest - 9; | |
22fe0c41 | 596 | SYSTEMTIME *st = syst (child->start_time + (long long) usecs * 10); |
78fed23c CF |
597 | sprintf (s, "%02d:%02d:%02d", st->wHour, st->wMinute, st->wSecond); |
598 | *strchr (s, '\0') = ' '; | |
599 | } | |
600 | else if (!delta) | |
601 | s = ptusec; | |
602 | else | |
603 | { | |
604 | s = ptusec; | |
605 | sprintf (intbuf, "%5d ", (int) d); | |
606 | int len = strlen (intbuf); | |
607 | ||
608 | memcpy ((s -= len), intbuf, len); | |
609 | } | |
610 | ||
459a9561 CF |
611 | if (include_hex) |
612 | { | |
613 | s -= 8; | |
a593a4c5 | 614 | sprintf (s, "%p", (void *) n); |
459a9561 CF |
615 | strchr (s, '\0')[0] = ' '; |
616 | } | |
22fe0c41 | 617 | child->last_usecs = usecs; |
78fed23c | 618 | if (numerror || !output_winerror (ofile, s)) |
1fd5e000 | 619 | fputs (s, ofile); |
3c952fed CF |
620 | if (!bufsize) |
621 | fflush (ofile); | |
1fd5e000 CF |
622 | } |
623 | ||
6265ac10 | 624 | static DWORD |
d73f9745 | 625 | proc_child (unsigned mask, FILE *ofile, pid_t pid) |
1fd5e000 | 626 | { |
6265ac10 | 627 | DWORD res = 0; |
1fd5e000 | 628 | DEBUG_EVENT ev; |
86fbc3d9 ED |
629 | time_t cur_time, last_time; |
630 | ||
1fd5e000 | 631 | SetThreadPriority (GetCurrentThread (), THREAD_PRIORITY_HIGHEST); |
86fbc3d9 | 632 | last_time = time (NULL); |
1fd5e000 CF |
633 | while (1) |
634 | { | |
635 | BOOL debug_event = WaitForDebugEvent (&ev, 1000); | |
5e0d760f | 636 | DWORD status = DBG_CONTINUE; |
86fbc3d9 ED |
637 | |
638 | if (bufsize && flush_period > 0 && | |
639 | (cur_time = time (NULL)) >= last_time + flush_period) | |
640 | { | |
641 | last_time = cur_time; | |
642 | fflush (ofile); | |
643 | } | |
644 | ||
1fd5e000 CF |
645 | if (!debug_event) |
646 | continue; | |
647 | ||
d73f9745 CF |
648 | if (pid) |
649 | { | |
650 | (void) cygwin_internal (CW_STRACE_TOGGLE, pid); | |
651 | pid = 0; | |
652 | } | |
653 | ||
1fd5e000 CF |
654 | switch (ev.dwDebugEventCode) |
655 | { | |
656 | case CREATE_PROCESS_DEBUG_EVENT: | |
657 | if (ev.u.CreateProcessInfo.hFile) | |
658 | CloseHandle (ev.u.CreateProcessInfo.hFile); | |
1fd5e000 | 659 | add_child (ev.dwProcessId, ev.u.CreateProcessInfo.hProcess); |
1fd5e000 CF |
660 | break; |
661 | ||
662 | case CREATE_THREAD_DEBUG_EVENT: | |
1fd5e000 CF |
663 | break; |
664 | ||
665 | case LOAD_DLL_DEBUG_EVENT: | |
666 | if (ev.u.LoadDll.hFile) | |
667 | CloseHandle (ev.u.LoadDll.hFile); | |
668 | break; | |
669 | ||
670 | case OUTPUT_DEBUG_STRING_EVENT: | |
671 | handle_output_debug_string (ev.dwProcessId, | |
672 | ev.u.DebugString.lpDebugStringData, | |
673 | mask, ofile); | |
674 | break; | |
675 | ||
676 | case EXIT_PROCESS_DEBUG_EVENT: | |
6265ac10 | 677 | res = ev.u.ExitProcess.dwExitCode >> 8; |
daed3bec | 678 | remove_child (ev.dwProcessId); |
1fd5e000 | 679 | break; |
5e0d760f | 680 | case EXCEPTION_DEBUG_EVENT: |
5d970405 | 681 | if (ev.u.Exception.ExceptionRecord.ExceptionCode != STATUS_BREAKPOINT) |
5460fae7 CF |
682 | { |
683 | status = DBG_EXCEPTION_NOT_HANDLED; | |
5d970405 | 684 | if (ev.u.Exception.dwFirstChance) |
a35d9f1a | 685 | fprintf (ofile, "--- Process %lu, exception %p at %p\n", ev.dwProcessId, |
2971f076 | 686 | (void *) ev.u.Exception.ExceptionRecord.ExceptionCode, |
5d970405 | 687 | ev.u.Exception.ExceptionRecord.ExceptionAddress); |
5460fae7 | 688 | } |
5e0d760f | 689 | break; |
1fd5e000 | 690 | } |
5e0d760f | 691 | if (!ContinueDebugEvent (ev.dwProcessId, ev.dwThreadId, status)) |
1fd5e000 CF |
692 | error (0, "couldn't continue debug event, windows error %d", |
693 | GetLastError ()); | |
5d970405 | 694 | if (!processes) |
1fd5e000 CF |
695 | break; |
696 | } | |
6265ac10 CF |
697 | |
698 | return res; | |
1fd5e000 CF |
699 | } |
700 | ||
80082f1e CF |
701 | static void |
702 | dotoggle (pid_t pid) | |
703 | { | |
80082f1e CF |
704 | child_pid = (DWORD) cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid); |
705 | if (!child_pid) | |
706 | { | |
707 | warn (0, "no such cygwin pid - %d", pid); | |
708 | child_pid = pid; | |
709 | } | |
710 | if (cygwin_internal (CW_STRACE_TOGGLE, child_pid)) | |
711 | error (0, "failed to toggle tracing for process %d<%d>", pid, child_pid); | |
712 | ||
713 | return; | |
714 | } | |
715 | ||
6265ac10 | 716 | static DWORD |
de6f8362 | 717 | dostrace (unsigned mask, FILE *ofile, pid_t pid, char **argv) |
1fd5e000 | 718 | { |
de6f8362 CF |
719 | if (!pid) |
720 | create_child (argv); | |
721 | else | |
722 | attach_process (pid); | |
1fd5e000 | 723 | |
6265ac10 | 724 | return proc_child (mask, ofile, pid); |
1fd5e000 CF |
725 | } |
726 | ||
33f0f67d CV |
727 | typedef struct tag_mask_mnemonic |
728 | { | |
729 | unsigned long val; | |
730 | const char *text; | |
731 | } | |
732 | mask_mnemonic; | |
733 | ||
734 | static const mask_mnemonic mnemonic_table[] = { | |
735 | {_STRACE_ALL, "all"}, | |
736 | {_STRACE_FLUSH, "flush"}, | |
737 | {_STRACE_INHERIT, "inherit"}, | |
738 | {_STRACE_UHOH, "uhoh"}, | |
739 | {_STRACE_SYSCALL, "syscall"}, | |
740 | {_STRACE_STARTUP, "startup"}, | |
741 | {_STRACE_DEBUG, "debug"}, | |
742 | {_STRACE_PARANOID, "paranoid"}, | |
743 | {_STRACE_TERMIOS, "termios"}, | |
744 | {_STRACE_SELECT, "select"}, | |
745 | {_STRACE_WM, "wm"}, | |
746 | {_STRACE_SIGP, "sigp"}, | |
747 | {_STRACE_MINIMAL, "minimal"}, | |
748 | {_STRACE_EXITDUMP, "exitdump"}, | |
749 | {_STRACE_SYSTEM, "system"}, | |
750 | {_STRACE_NOMUTEX, "nomutex"}, | |
751 | {_STRACE_MALLOC, "malloc"}, | |
752 | {_STRACE_THREAD, "thread"}, | |
ff3e6bcb | 753 | {_STRACE_PTHREAD, "pthread"}, |
dbf41aee | 754 | {_STRACE_SPECIAL, "special"}, |
33f0f67d CV |
755 | {0, NULL} |
756 | }; | |
757 | ||
758 | static unsigned long | |
759 | mnemonic2ul (const char *nptr, char **endptr) | |
760 | { | |
761 | // Look up mnemonic in table, return value. | |
762 | // *endptr = ptr to char that breaks match. | |
763 | const mask_mnemonic *mnp = mnemonic_table; | |
764 | ||
765 | while (mnp->text != NULL) | |
766 | { | |
767 | if (strcmp (mnp->text, nptr) == 0) | |
768 | { | |
769 | // Found a match. | |
770 | if (endptr != NULL) | |
771 | { | |
772 | *endptr = ((char *) nptr) + strlen (mnp->text); | |
773 | } | |
774 | return mnp->val; | |
775 | } | |
776 | mnp++; | |
777 | } | |
778 | ||
779 | // Didn't find it. | |
780 | if (endptr != NULL) | |
781 | { | |
782 | *endptr = (char *) nptr; | |
783 | } | |
784 | return 0; | |
785 | } | |
786 | ||
787 | static unsigned long | |
788 | parse_mask (const char *ms, char **endptr) | |
789 | { | |
790 | const char *p = ms; | |
791 | char *newp; | |
792 | unsigned long retval = 0, thisval; | |
793 | const size_t bufsize = 16; | |
794 | char buffer[bufsize]; | |
795 | size_t len; | |
796 | ||
797 | while (*p != '\0') | |
798 | { | |
799 | // First extract the term, terminate it, and lowercase it. | |
800 | strncpy (buffer, p, bufsize); | |
801 | buffer[bufsize - 1] = '\0'; | |
802 | len = strcspn (buffer, "+,\0"); | |
803 | buffer[len] = '\0'; | |
804 | strlwr (buffer); | |
805 | ||
806 | // Check if this is a mnemonic. We have to do this first or strtoul() | |
807 | // will false-trigger on anything starting with "a" through "f". | |
808 | thisval = mnemonic2ul (buffer, &newp); | |
809 | if (buffer == newp) | |
810 | { | |
811 | // This term isn't mnemonic, check if it's hex. | |
812 | thisval = strtoul (buffer, &newp, 16); | |
813 | if (newp != buffer + len) | |
814 | { | |
815 | // Not hex either, syntax error. | |
816 | *endptr = (char *) p; | |
817 | return 0; | |
818 | } | |
819 | } | |
820 | ||
821 | p += len; | |
822 | retval += thisval; | |
823 | ||
824 | // Handle operators | |
825 | if (*p == '\0') | |
826 | break; | |
827 | if ((*p == '+') || (*p == ',')) | |
828 | { | |
829 | // For now these both equate to addition/ORing. Until we get | |
830 | // fancy and add things like "all-<something>", all we need do is | |
831 | // continue the looping. | |
832 | p++; | |
833 | continue; | |
834 | } | |
835 | else | |
836 | { | |
837 | // Syntax error | |
838 | *endptr = (char *) p; | |
839 | return 0; | |
840 | } | |
841 | } | |
842 | ||
843 | *endptr = (char *) p; | |
844 | return retval; | |
845 | } | |
846 | ||
847 | static void | |
ba692ae9 | 848 | usage (FILE *where = stderr) |
33f0f67d | 849 | { |
ba692ae9 CF |
850 | fprintf (where, "\ |
851 | Usage: %s [OPTIONS] <command-line>\n\ | |
80082f1e | 852 | Usage: %s [OPTIONS] -p <pid>\n\ |
aa275fe0 JDF |
853 | Trace system calls and signals\n\ |
854 | \n\ | |
48f939e2 CF |
855 | -b, --buffer-size=SIZE set size of output file buffer\n\ |
856 | -d, --no-delta don't display the delta-t microsecond timestamp\n\ | |
f69af9b3 | 857 | -f, --trace-children trace child processes (toggle - default true)\n\ |
ba692ae9 | 858 | -h, --help output usage information and exit\n\ |
48f939e2 | 859 | -m, --mask=MASK set message filter mask\n\ |
48f939e2 CF |
860 | -n, --crack-error-numbers output descriptive text instead of error\n\ |
861 | numbers for Windows errors\n\ | |
80082f1e CF |
862 | -o, --output=FILENAME set output file to FILENAME\n\ |
863 | -p, --pid=n attach to executing program with cygwin pid n\n\ | |
99b08560 | 864 | -q, --quiet suppress messages about attaching, detaching, etc.\n\ |
48f939e2 | 865 | -S, --flush-period=PERIOD flush buffered strace output every PERIOD secs\n\ |
ba692ae9 CF |
866 | -t, --timestamp use an absolute hh:mm:ss timestamp insted of \n\ |
867 | the default microsecond timestamp. Implies -d\n\ | |
80082f1e CF |
868 | -T, --toggle toggle tracing in a process already being\n\ |
869 | traced. Requires -p <pid>\n\ | |
801d6cc7 | 870 | -u, --usecs toggle printing of microseconds timestamp\n\ |
ba692ae9 | 871 | -v, --version output version information and exit\n\ |
48f939e2 | 872 | -w, --new-window spawn program under test in a new window\n\ |
80082f1e | 873 | \n", pgm, pgm); |
ba692ae9 CF |
874 | if ( where == stdout) |
875 | fprintf (stdout, "\ | |
33f0f67d CV |
876 | MASK can be any combination of the following mnemonics and/or hex values\n\ |
877 | (0x is optional). Combine masks with '+' or ',' like so:\n\ | |
878 | \n\ | |
879 | --mask=wm+system,malloc+0x00800\n\ | |
880 | \n\ | |
881 | Mnemonic Hex Corresponding Def Description\n\ | |
882 | =========================================================================\n\ | |
dbf41aee CF |
883 | all 0x000001 (_STRACE_ALL) All strace messages.\n\ |
884 | flush 0x000002 (_STRACE_FLUSH) Flush output buffer after each message.\n\ | |
885 | inherit 0x000004 (_STRACE_INHERIT) Children inherit mask from parent.\n\ | |
886 | uhoh 0x000008 (_STRACE_UHOH) Unusual or weird phenomenon.\n\ | |
887 | syscall 0x000010 (_STRACE_SYSCALL) System calls.\n\ | |
888 | startup 0x000020 (_STRACE_STARTUP) argc/envp printout at startup.\n\ | |
889 | debug 0x000040 (_STRACE_DEBUG) Info to help debugging. \n\ | |
890 | paranoid 0x000080 (_STRACE_PARANOID) Paranoid info.\n\ | |
891 | termios 0x000100 (_STRACE_TERMIOS) Info for debugging termios stuff.\n\ | |
892 | select 0x000200 (_STRACE_SELECT) Info on ugly select internals.\n\ | |
893 | wm 0x000400 (_STRACE_WM) Trace Windows msgs (enable _strace_wm).\n\ | |
894 | sigp 0x000800 (_STRACE_SIGP) Trace signal and process handling.\n\ | |
895 | minimal 0x001000 (_STRACE_MINIMAL) Very minimal strace output.\n\ | |
896 | pthread 0x002000 (_STRACE_PTHREAD) Pthread calls.\n\ | |
897 | exitdump 0x004000 (_STRACE_EXITDUMP) Dump strace cache on exit.\n\ | |
898 | system 0x008000 (_STRACE_SYSTEM) Serious error; goes to console and log.\n\ | |
899 | nomutex 0x010000 (_STRACE_NOMUTEX) Don't use mutex for synchronization.\n\ | |
900 | malloc 0x020000 (_STRACE_MALLOC) Trace malloc calls.\n\ | |
901 | thread 0x040000 (_STRACE_THREAD) Thread-locking calls.\n\ | |
902 | special 0x100000 (_STRACE_SPECIAL) Special debugging printfs for\n\ | |
903 | non-checked-in code\n\ | |
33f0f67d | 904 | "); |
ba692ae9 CF |
905 | if (where == stderr) |
906 | fprintf (stderr, "Try '%s --help' for more information.\n", pgm); | |
907 | exit (where == stderr ? 1 : 0 ); | |
33f0f67d CV |
908 | } |
909 | ||
910 | struct option longopts[] = { | |
33f0f67d | 911 | {"buffer-size", required_argument, NULL, 'b'}, |
de6f8362 CF |
912 | {"help", no_argument, NULL, 'h'}, |
913 | {"flush-period", required_argument, NULL, 'S'}, | |
459a9561 | 914 | {"hex", no_argument, NULL, 'H'}, |
33f0f67d | 915 | {"mask", required_argument, NULL, 'm'}, |
de6f8362 | 916 | {"new-window", no_argument, NULL, 'w'}, |
33f0f67d | 917 | {"output", required_argument, NULL, 'o'}, |
33f0f67d | 918 | {"no-delta", no_argument, NULL, 'd'}, |
de6f8362 | 919 | {"pid", required_argument, NULL, 'p'}, |
5d970405 | 920 | {"quiet", no_argument, NULL, 'q'}, |
33f0f67d | 921 | {"timestamp", no_argument, NULL, 't'}, |
80082f1e | 922 | {"toggle", no_argument, NULL, 'T'}, |
de6f8362 CF |
923 | {"trace-children", no_argument, NULL, 'f'}, |
924 | {"translate-error-numbers", no_argument, NULL, 'n'}, | |
925 | {"usecs", no_argument, NULL, 'u'}, | |
926 | {"version", no_argument, NULL, 'v'}, | |
33f0f67d CV |
927 | {NULL, 0, NULL, 0} |
928 | }; | |
929 | ||
5d970405 | 930 | static const char *const opts = "+b:dhHfm:no:p:qS:tTuvw"; |
33f0f67d | 931 | |
ba692ae9 CF |
932 | static void |
933 | print_version () | |
934 | { | |
935 | const char *v = strchr (version, ':'); | |
936 | int len; | |
937 | if (!v) | |
938 | { | |
939 | v = "?"; | |
940 | len = 1; | |
941 | } | |
942 | else | |
943 | { | |
944 | v += 2; | |
945 | len = strchr (v, ' ') - v; | |
946 | } | |
947 | printf ("\ | |
948 | %s (cygwin) %.*s\n\ | |
949 | System Trace\n\ | |
90253b82 | 950 | Copyright 2000, 2001, 2002, 2003, 2004, 2005 Red Hat, Inc.\n\ |
98467dae JDF |
951 | Compiled on %s\n\ |
952 | ", pgm, len, v, __DATE__); | |
ba692ae9 CF |
953 | } |
954 | ||
1fd5e000 | 955 | int |
eedc36cb | 956 | main (int argc, char **argv) |
1fd5e000 CF |
957 | { |
958 | unsigned mask = 0; | |
959 | FILE *ofile = NULL; | |
80082f1e | 960 | pid_t pid = 0; |
1fd5e000 | 961 | int opt; |
b841df79 | 962 | int toggle = 0; |
5d970405 | 963 | int sawquiet = -1; |
1fd5e000 | 964 | |
26c07f70 CF |
965 | if (load_cygwin ()) |
966 | { | |
967 | char **av = (char **) cygwin_internal (CW_ARGV); | |
cba3b11f | 968 | if (av && (DWORD) av != (DWORD) -1) |
26c07f70 CF |
969 | for (argc = 0, argv = av; *av; av++) |
970 | argc++; | |
971 | } | |
972 | ||
1fd5e000 CF |
973 | if (!(pgm = strrchr (*argv, '\\')) && !(pgm = strrchr (*argv, '/'))) |
974 | pgm = *argv; | |
975 | else | |
976 | pgm++; | |
977 | ||
33f0f67d | 978 | while ((opt = getopt_long (argc, argv, opts, longopts, NULL)) != EOF) |
1fd5e000 CF |
979 | switch (opt) |
980 | { | |
de6f8362 CF |
981 | case 'b': |
982 | bufsize = atoi (optarg); | |
33f0f67d | 983 | break; |
de6f8362 CF |
984 | case 'd': |
985 | delta ^= 1; | |
33f0f67d | 986 | break; |
1fd5e000 CF |
987 | case 'f': |
988 | forkdebug ^= 1; | |
989 | break; | |
de6f8362 CF |
990 | case 'h': |
991 | // Print help and exit | |
ba692ae9 | 992 | usage (stdout); |
3c952fed | 993 | break; |
459a9561 CF |
994 | case 'H': |
995 | include_hex ^= 1; | |
996 | break; | |
1fd5e000 | 997 | case 'm': |
33f0f67d CV |
998 | { |
999 | char *endptr; | |
1000 | mask = parse_mask (optarg, &endptr); | |
1001 | if (*endptr != '\0') | |
1002 | { | |
1003 | // Bad mask expression. | |
1004 | error (0, "syntax error in mask expression \"%s\" near \ | |
1005 | character #%d.\n", optarg, (int) (endptr - optarg), endptr); | |
1006 | } | |
80082f1e | 1007 | break; |
33f0f67d | 1008 | } |
de6f8362 CF |
1009 | case 'n': |
1010 | numerror ^= 1; | |
1011 | break; | |
1fd5e000 | 1012 | case 'o': |
8b800efe | 1013 | if ((ofile = fopen (cygpath (optarg, NULL), "wb")) == NULL) |
1fd5e000 CF |
1014 | error (1, "can't open %s", optarg); |
1015 | #ifdef F_SETFD | |
1016 | (void) fcntl (fileno (ofile), F_SETFD, 0); | |
1017 | #endif | |
1018 | break; | |
de6f8362 | 1019 | case 'p': |
7c518815 | 1020 | pid = strtoul (optarg, NULL, 10); |
5d970405 CF |
1021 | strace_active |= 2; |
1022 | break; | |
1023 | case 'q': | |
1024 | if (sawquiet < 0) | |
1025 | sawquiet = 1; | |
1026 | else | |
1027 | sawquiet ^= 1; | |
de6f8362 CF |
1028 | break; |
1029 | case 'S': | |
7c518815 | 1030 | flush_period = strtoul (optarg, NULL, 10); |
78fed23c | 1031 | break; |
1fd5e000 | 1032 | case 't': |
78fed23c CF |
1033 | hhmmss ^= 1; |
1034 | break; | |
80082f1e CF |
1035 | case 'T': |
1036 | toggle ^= 1; | |
1037 | break; | |
78fed23c | 1038 | case 'u': |
de6f8362 | 1039 | // FIXME: currently unimplemented |
801d6cc7 CF |
1040 | show_usecs ^= 1; |
1041 | delta ^= 1; | |
86fbc3d9 | 1042 | break; |
de6f8362 CF |
1043 | case 'v': |
1044 | // Print version info and exit | |
ba692ae9 CF |
1045 | print_version (); |
1046 | return 0; | |
86fbc3d9 ED |
1047 | case 'w': |
1048 | new_window ^= 1; | |
1049 | break; | |
80082f1e CF |
1050 | case '?': |
1051 | fprintf (stderr, "Try '%s --help' for more information.\n", pgm); | |
1052 | exit (1); | |
1fd5e000 CF |
1053 | } |
1054 | ||
80082f1e CF |
1055 | if (pid && argv[optind]) |
1056 | error (0, "cannot provide both a command line and a process id"); | |
1057 | ||
1058 | if (!pid && !argv[optind]) | |
1059 | error (0, "must provide either a command line or a process id"); | |
1060 | ||
1061 | if (toggle && !pid) | |
1062 | error (0, "must provide a process id to toggle tracing"); | |
ba692ae9 | 1063 | |
5d970405 CF |
1064 | if (!pid) |
1065 | quiet = sawquiet < 0 || !sawquiet; | |
1066 | else if (sawquiet < 0) | |
1067 | quiet = 0; | |
1068 | else | |
1069 | quiet = sawquiet; | |
1070 | ||
1fd5e000 | 1071 | if (!mask) |
7c03f799 | 1072 | mask = _STRACE_ALL; |
1fd5e000 | 1073 | |
3c952fed CF |
1074 | if (bufsize) |
1075 | setvbuf (ofile, (char *) alloca (bufsize), _IOFBF, bufsize); | |
1076 | ||
1fd5e000 CF |
1077 | if (!ofile) |
1078 | ofile = stdout; | |
1079 | ||
6265ac10 | 1080 | DWORD res = 0; |
80082f1e CF |
1081 | if (toggle) |
1082 | dotoggle (pid); | |
1083 | else | |
6265ac10 CF |
1084 | res = dostrace (mask, ofile, pid, argv + optind); |
1085 | return res; | |
1fd5e000 CF |
1086 | } |
1087 | ||
1088 | #undef CloseHandle | |
1089 | ||
1090 | static BOOL | |
1091 | close_handle (HANDLE h, DWORD ok) | |
1092 | { | |
1093 | child_list *c; | |
eedc36cb | 1094 | for (c = &children; (c = c->next) != NULL;) |
1fd5e000 CF |
1095 | if (c->hproc == h && c->id != ok) |
1096 | error (0, "Closing child handle %p", h); | |
1097 | return CloseHandle (h); | |
1098 | } |