io.cpp 21 KB

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  1. #include "nssm.h"
  2. #define COMPLAINED_READ (1 << 0)
  3. #define COMPLAINED_WRITE (1 << 1)
  4. #define COMPLAINED_ROTATE (1 << 2)
  5. static HANDLE create_logging_thread(TCHAR *service_name, TCHAR *path, unsigned long sharing, unsigned long disposition, unsigned long flags, HANDLE *read_handle_ptr, HANDLE *pipe_handle_ptr, HANDLE *write_handle_ptr, unsigned long rotate_bytes_low, unsigned long rotate_bytes_high, unsigned long *tid_ptr, unsigned long *rotate_online) {
  6. *tid_ptr = 0;
  7. /* Pipe between application's stdout/stderr and our logging handle. */
  8. if (read_handle_ptr && ! *read_handle_ptr) {
  9. if (pipe_handle_ptr && ! *pipe_handle_ptr) {
  10. if (CreatePipe(read_handle_ptr, pipe_handle_ptr, 0, 0)) {
  11. SetHandleInformation(*pipe_handle_ptr, HANDLE_FLAG_INHERIT, HANDLE_FLAG_INHERIT);
  12. }
  13. else {
  14. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_CREATEPIPE_FAILED, service_name, path, error_string(GetLastError()));
  15. return (HANDLE) 0;
  16. }
  17. }
  18. }
  19. logger_t *logger = (logger_t *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(logger_t));
  20. if (! logger) {
  21. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, _T("logger"), _T("create_logging_thread()"), 0);
  22. return (HANDLE) 0;
  23. }
  24. ULARGE_INTEGER size;
  25. size.LowPart = rotate_bytes_low;
  26. size.HighPart = rotate_bytes_high;
  27. logger->service_name = service_name;
  28. logger->path = path;
  29. logger->sharing = sharing;
  30. logger->disposition = disposition;
  31. logger->flags = flags;
  32. logger->read_handle = *read_handle_ptr;
  33. logger->write_handle = *write_handle_ptr;
  34. logger->size = (__int64) size.QuadPart;
  35. logger->tid_ptr = tid_ptr;
  36. logger->rotate_online = rotate_online;
  37. HANDLE thread_handle = CreateThread(NULL, 0, log_and_rotate, (void *) logger, 0, logger->tid_ptr);
  38. if (! thread_handle) {
  39. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_CREATETHREAD_FAILED, error_string(GetLastError()), 0);
  40. HeapFree(GetProcessHeap(), 0, logger);
  41. }
  42. return thread_handle;
  43. }
  44. static inline unsigned long guess_charsize(void *address, unsigned long bufsize) {
  45. if (IsTextUnicode(address, bufsize, 0)) return (unsigned long) sizeof(wchar_t);
  46. else return (unsigned long) sizeof(char);
  47. }
  48. static inline void write_bom(logger_t *logger, unsigned long *out) {
  49. wchar_t bom = L'\ufeff';
  50. if (! WriteFile(logger->write_handle, (void *) &bom, sizeof(bom), out, 0)) {
  51. log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_SOMEBODY_SET_UP_US_THE_BOM, logger->service_name, logger->path, error_string(GetLastError()), 0);
  52. }
  53. }
  54. /* Get path, share mode, creation disposition and flags for a stream. */
  55. int get_createfile_parameters(HKEY key, TCHAR *prefix, TCHAR *path, unsigned long *sharing, unsigned long default_sharing, unsigned long *disposition, unsigned long default_disposition, unsigned long *flags, unsigned long default_flags) {
  56. TCHAR value[NSSM_STDIO_LENGTH];
  57. /* Path. */
  58. if (_sntprintf_s(value, _countof(value), _TRUNCATE, _T("%s"), prefix) < 0) {
  59. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, prefix, _T("get_createfile_parameters()"), 0);
  60. return 1;
  61. }
  62. switch (expand_parameter(key, value, path, PATH_LENGTH, true, false)) {
  63. case 0: if (! path[0]) return 0; break; /* OK. */
  64. default: return 2; /* Error. */
  65. }
  66. /* ShareMode. */
  67. if (_sntprintf_s(value, _countof(value), _TRUNCATE, _T("%s%s"), prefix, NSSM_REG_STDIO_SHARING) < 0) {
  68. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, NSSM_REG_STDIO_SHARING, _T("get_createfile_parameters()"), 0);
  69. return 3;
  70. }
  71. switch (get_number(key, value, sharing, false)) {
  72. case 0: *sharing = default_sharing; break; /* Missing. */
  73. case 1: break; /* Found. */
  74. case -2: return 4; break; /* Error. */
  75. }
  76. /* CreationDisposition. */
  77. if (_sntprintf_s(value, _countof(value), _TRUNCATE, _T("%s%s"), prefix, NSSM_REG_STDIO_DISPOSITION) < 0) {
  78. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, NSSM_REG_STDIO_DISPOSITION, _T("get_createfile_parameters()"), 0);
  79. return 5;
  80. }
  81. switch (get_number(key, value, disposition, false)) {
  82. case 0: *disposition = default_disposition; break; /* Missing. */
  83. case 1: break; /* Found. */
  84. case -2: return 6; break; /* Error. */
  85. }
  86. /* Flags. */
  87. if (_sntprintf_s(value, _countof(value), _TRUNCATE, _T("%s%s"), prefix, NSSM_REG_STDIO_FLAGS) < 0) {
  88. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, NSSM_REG_STDIO_FLAGS, _T("get_createfile_parameters()"), 0);
  89. return 7;
  90. }
  91. switch (get_number(key, value, flags, false)) {
  92. case 0: *flags = default_flags; break; /* Missing. */
  93. case 1: break; /* Found. */
  94. case -2: return 8; break; /* Error. */
  95. }
  96. return 0;
  97. }
  98. int set_createfile_parameter(HKEY key, TCHAR *prefix, TCHAR *suffix, unsigned long number) {
  99. TCHAR value[NSSM_STDIO_LENGTH];
  100. if (_sntprintf_s(value, _countof(value), _TRUNCATE, _T("%s%s"), prefix, suffix) < 0) {
  101. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, suffix, _T("set_createfile_parameter()"), 0);
  102. return 1;
  103. }
  104. return set_number(key, value, number);
  105. }
  106. int delete_createfile_parameter(HKEY key, TCHAR *prefix, TCHAR *suffix) {
  107. TCHAR value[NSSM_STDIO_LENGTH];
  108. if (_sntprintf_s(value, _countof(value), _TRUNCATE, _T("%s%s"), prefix, suffix) < 0) {
  109. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, suffix, _T("delete_createfile_parameter()"), 0);
  110. return 1;
  111. }
  112. if (RegDeleteValue(key, value)) return 0;
  113. return 1;
  114. }
  115. HANDLE write_to_file(TCHAR *path, unsigned long sharing, SECURITY_ATTRIBUTES *attributes, unsigned long disposition, unsigned long flags) {
  116. HANDLE ret = CreateFile(path, FILE_WRITE_DATA, sharing, attributes, disposition, flags, 0);
  117. if (ret) {
  118. if (SetFilePointer(ret, 0, 0, FILE_END) != INVALID_SET_FILE_POINTER) SetEndOfFile(ret);
  119. return ret;
  120. }
  121. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_CREATEFILE_FAILED, path, error_string(GetLastError()), 0);
  122. return ret;
  123. }
  124. static void rotated_filename(TCHAR *path, TCHAR *rotated, unsigned long rotated_len, SYSTEMTIME *st) {
  125. if (! st) {
  126. SYSTEMTIME now;
  127. st = &now;
  128. GetSystemTime(st);
  129. }
  130. TCHAR buffer[PATH_LENGTH];
  131. memmove(buffer, path, sizeof(buffer));
  132. TCHAR *ext = PathFindExtension(buffer);
  133. TCHAR extension[PATH_LENGTH];
  134. _sntprintf_s(extension, _countof(extension), _TRUNCATE, _T("-%04u%02u%02uT%02u%02u%02u.%03u%s"), st->wYear, st->wMonth, st->wDay, st->wHour, st->wMinute, st->wSecond, st->wMilliseconds, ext);
  135. *ext = _T('\0');
  136. _sntprintf_s(rotated, rotated_len, _TRUNCATE, _T("%s%s"), buffer, extension);
  137. }
  138. void rotate_file(TCHAR *service_name, TCHAR *path, unsigned long seconds, unsigned long low, unsigned long high) {
  139. unsigned long error;
  140. /* Now. */
  141. SYSTEMTIME st;
  142. GetSystemTime(&st);
  143. BY_HANDLE_FILE_INFORMATION info;
  144. /* Try to open the file to check if it exists and to get attributes. */
  145. HANDLE file = CreateFile(path, 0, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
  146. if (file) {
  147. /* Get file attributes. */
  148. if (! GetFileInformationByHandle(file, &info)) {
  149. /* Reuse current time for rotation timestamp. */
  150. seconds = low = high = 0;
  151. SystemTimeToFileTime(&st, &info.ftLastWriteTime);
  152. }
  153. CloseHandle(file);
  154. }
  155. else {
  156. error = GetLastError();
  157. if (error == ERROR_FILE_NOT_FOUND) return;
  158. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_ROTATE_FILE_FAILED, service_name, path, _T("CreateFile()"), path, error_string(error), 0);
  159. /* Reuse current time for rotation timestamp. */
  160. seconds = low = high = 0;
  161. SystemTimeToFileTime(&st, &info.ftLastWriteTime);
  162. }
  163. /* Check file age. */
  164. if (seconds) {
  165. FILETIME ft;
  166. SystemTimeToFileTime(&st, &ft);
  167. ULARGE_INTEGER s;
  168. s.LowPart = ft.dwLowDateTime;
  169. s.HighPart = ft.dwHighDateTime;
  170. s.QuadPart -= seconds * 10000000LL;
  171. ft.dwLowDateTime = s.LowPart;
  172. ft.dwHighDateTime = s.HighPart;
  173. if (CompareFileTime(&info.ftLastWriteTime, &ft) > 0) return;
  174. }
  175. /* Check file size. */
  176. if (low || high) {
  177. if (info.nFileSizeHigh < high) return;
  178. if (info.nFileSizeHigh == high && info.nFileSizeLow < low) return;
  179. }
  180. /* Get new filename. */
  181. FileTimeToSystemTime(&info.ftLastWriteTime, &st);
  182. TCHAR rotated[PATH_LENGTH];
  183. rotated_filename(path, rotated, _countof(rotated), &st);
  184. /* Rotate. */
  185. if (MoveFile(path, rotated)) {
  186. log_event(EVENTLOG_INFORMATION_TYPE, NSSM_EVENT_ROTATED, service_name, path, rotated, 0);
  187. return;
  188. }
  189. error = GetLastError();
  190. if (error == ERROR_FILE_NOT_FOUND) return;
  191. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_ROTATE_FILE_FAILED, service_name, path, _T("MoveFile()"), rotated, error_string(error), 0);
  192. return;
  193. }
  194. int get_output_handles(nssm_service_t *service, STARTUPINFO *si) {
  195. if (! si) return 1;
  196. /* Allocate a new console so we get a fresh stdin, stdout and stderr. */
  197. alloc_console(service);
  198. /* stdin */
  199. if (service->stdin_path[0]) {
  200. si->hStdInput = CreateFile(service->stdin_path, FILE_READ_DATA, service->stdin_sharing, 0, service->stdin_disposition, service->stdin_flags, 0);
  201. if (! si->hStdInput) {
  202. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_CREATEFILE_FAILED, service->stdin_path, error_string(GetLastError()), 0);
  203. return 2;
  204. }
  205. }
  206. /* stdout */
  207. if (service->stdout_path[0]) {
  208. if (service->rotate_files) rotate_file(service->name, service->stdout_path, service->rotate_seconds, service->rotate_bytes_low, service->rotate_bytes_high);
  209. HANDLE stdout_handle = write_to_file(service->stdout_path, service->stdout_sharing, 0, service->stdout_disposition, service->stdout_flags);
  210. if (! stdout_handle) return 4;
  211. if (service->rotate_files && service->rotate_stdout_online) {
  212. service->stdout_pipe = si->hStdOutput = 0;
  213. service->stdout_thread = create_logging_thread(service->name, service->stdout_path, service->stdout_sharing, service->stdout_disposition, service->stdout_flags, &service->stdout_pipe, &si->hStdOutput, &stdout_handle, service->rotate_bytes_low, service->rotate_bytes_high, &service->stdout_tid, &service->rotate_stdout_online);
  214. if (! service->stdout_thread) {
  215. CloseHandle(service->stdout_pipe);
  216. CloseHandle(si->hStdOutput);
  217. }
  218. }
  219. else service->stdout_thread = 0;
  220. if (! service->stdout_thread) {
  221. if (! DuplicateHandle(GetCurrentProcess(), stdout_handle, GetCurrentProcess(), &si->hStdOutput, 0, true, DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS)) {
  222. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_DUPLICATEHANDLE_FAILED, NSSM_REG_STDOUT, _T("stdout"), error_string(GetLastError()), 0);
  223. return 4;
  224. }
  225. service->rotate_stdout_online = NSSM_ROTATE_OFFLINE;
  226. }
  227. }
  228. /* stderr */
  229. if (service->stderr_path[0]) {
  230. /* Same as stdout? */
  231. if (str_equiv(service->stderr_path, service->stdout_path)) {
  232. service->stderr_sharing = service->stdout_sharing;
  233. service->stderr_disposition = service->stdout_disposition;
  234. service->stderr_flags = service->stdout_flags;
  235. service->rotate_stderr_online = NSSM_ROTATE_OFFLINE;
  236. /* Two handles to the same file will create a race. */
  237. if (! DuplicateHandle(GetCurrentProcess(), si->hStdOutput, GetCurrentProcess(), &si->hStdError, 0, true, DUPLICATE_SAME_ACCESS)) {
  238. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_DUPLICATEHANDLE_FAILED, NSSM_REG_STDOUT, _T("stderr"), error_string(GetLastError()), 0);
  239. return 6;
  240. }
  241. }
  242. else {
  243. if (service->rotate_files) rotate_file(service->name, service->stderr_path, service->rotate_seconds, service->rotate_bytes_low, service->rotate_bytes_high);
  244. HANDLE stderr_handle = write_to_file(service->stderr_path, service->stderr_sharing, 0, service->stderr_disposition, service->stderr_flags);
  245. if (! stderr_handle) return 7;
  246. if (service->rotate_files && service->rotate_stderr_online) {
  247. service->stderr_pipe = si->hStdError = 0;
  248. service->stderr_thread = create_logging_thread(service->name, service->stderr_path, service->stderr_sharing, service->stderr_disposition, service->stderr_flags, &service->stderr_pipe, &si->hStdError, &stderr_handle, service->rotate_bytes_low, service->rotate_bytes_high, &service->stderr_tid, &service->rotate_stderr_online);
  249. if (! service->stderr_thread) {
  250. CloseHandle(service->stderr_pipe);
  251. CloseHandle(si->hStdError);
  252. }
  253. }
  254. else service->stderr_thread = 0;
  255. if (! service->stderr_thread) {
  256. if (! DuplicateHandle(GetCurrentProcess(), stderr_handle, GetCurrentProcess(), &si->hStdError, 0, true, DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS)) {
  257. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_DUPLICATEHANDLE_FAILED, NSSM_REG_STDERR, _T("stderr"), error_string(GetLastError()), 0);
  258. return 7;
  259. }
  260. service->rotate_stderr_online = NSSM_ROTATE_OFFLINE;
  261. }
  262. }
  263. }
  264. /*
  265. We need to set the startup_info flags to make the new handles
  266. inheritable by the new process.
  267. */
  268. si->dwFlags |= STARTF_USESTDHANDLES;
  269. if (service->no_console) return 0;
  270. /* Redirect other handles. */
  271. if (! si->hStdInput) {
  272. if (! DuplicateHandle(GetCurrentProcess(), GetStdHandle(STD_INPUT_HANDLE), GetCurrentProcess(), &si->hStdInput, 0, true, DUPLICATE_SAME_ACCESS)) {
  273. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_DUPLICATEHANDLE_FAILED, _T("STD_INPUT_HANDLE"), _T("stdin"), error_string(GetLastError()), 0);
  274. return 8;
  275. }
  276. }
  277. if (! si->hStdOutput) {
  278. if (! DuplicateHandle(GetCurrentProcess(), GetStdHandle(STD_OUTPUT_HANDLE), GetCurrentProcess(), &si->hStdOutput, 0, true, DUPLICATE_SAME_ACCESS)) {
  279. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_DUPLICATEHANDLE_FAILED, _T("STD_OUTPUT_HANDLE"), _T("stdout"), error_string(GetLastError()), 0);
  280. return 9;
  281. }
  282. }
  283. if (! si->hStdError) {
  284. if (! DuplicateHandle(GetCurrentProcess(), GetStdHandle(STD_ERROR_HANDLE), GetCurrentProcess(), &si->hStdError, 0, true, DUPLICATE_SAME_ACCESS)) {
  285. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_DUPLICATEHANDLE_FAILED, _T("STD_ERROR_HANDLE"), _T("stderr"), error_string(GetLastError()), 0);
  286. return 10;
  287. }
  288. }
  289. return 0;
  290. }
  291. void close_output_handles(STARTUPINFO *si) {
  292. if (si->hStdInput) CloseHandle(si->hStdInput);
  293. if (si->hStdOutput) CloseHandle(si->hStdOutput);
  294. if (si->hStdError) CloseHandle(si->hStdError);
  295. }
  296. /*
  297. Try multiple times to read from a file.
  298. Returns: 0 on success.
  299. 1 on non-fatal error.
  300. -1 on fatal error.
  301. */
  302. static int try_read(logger_t *logger, void *address, unsigned long bufsize, unsigned long *in, int *complained) {
  303. int ret = 1;
  304. unsigned long error;
  305. for (int tries = 0; tries < 5; tries++) {
  306. if (ReadFile(logger->read_handle, address, bufsize, in, 0)) return 0;
  307. error = GetLastError();
  308. switch (error) {
  309. /* Other end closed the pipe. */
  310. case ERROR_BROKEN_PIPE:
  311. ret = -1;
  312. goto complain_read;
  313. /* Couldn't lock the buffer. */
  314. case ERROR_NOT_ENOUGH_QUOTA:
  315. Sleep(2000 + tries * 3000);
  316. ret = 1;
  317. continue;
  318. /* Write was cancelled by the other end. */
  319. case ERROR_OPERATION_ABORTED:
  320. ret = 1;
  321. goto complain_read;
  322. default:
  323. ret = -1;
  324. }
  325. }
  326. complain_read:
  327. /* Ignore the error if we've been requested to exit anyway. */
  328. if (*logger->rotate_online != NSSM_ROTATE_ONLINE) return ret;
  329. if (! (*complained & COMPLAINED_READ)) log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_READFILE_FAILED, logger->service_name, logger->path, error_string(error), 0);
  330. *complained |= COMPLAINED_READ;
  331. return ret;
  332. }
  333. /*
  334. Try multiple times to write to a file.
  335. Returns: 0 on success.
  336. 1 on non-fatal error.
  337. -1 on fatal error.
  338. */
  339. static int try_write(logger_t *logger, void *address, unsigned long bufsize, unsigned long *out, int *complained) {
  340. int ret = 1;
  341. unsigned long error;
  342. for (int tries = 0; tries < 5; tries++) {
  343. if (WriteFile(logger->write_handle, address, bufsize, out, 0)) return 0;
  344. error = GetLastError();
  345. if (error == ERROR_IO_PENDING) {
  346. /* Operation was successful pending flush to disk. */
  347. return 0;
  348. }
  349. switch (error) {
  350. /* Other end closed the pipe. */
  351. case ERROR_BROKEN_PIPE:
  352. ret = -1;
  353. goto complain_write;
  354. /* Couldn't lock the buffer. */
  355. case ERROR_NOT_ENOUGH_QUOTA:
  356. /* Out of disk space. */
  357. case ERROR_DISK_FULL:
  358. Sleep(2000 + tries * 3000);
  359. ret = 1;
  360. continue;
  361. default:
  362. /* We'll lose this line but try to read and write subsequent ones. */
  363. ret = 1;
  364. }
  365. }
  366. complain_write:
  367. if (! (*complained & COMPLAINED_WRITE)) log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_WRITEFILE_FAILED, logger->service_name, logger->path, error_string(error), 0);
  368. *complained |= COMPLAINED_WRITE;
  369. return ret;
  370. }
  371. /* Wrapper to be called in a new thread for logging. */
  372. unsigned long WINAPI log_and_rotate(void *arg) {
  373. logger_t *logger = (logger_t *) arg;
  374. if (! logger) return 1;
  375. __int64 size;
  376. BY_HANDLE_FILE_INFORMATION info;
  377. /* Find initial file size. */
  378. if (! GetFileInformationByHandle(logger->write_handle, &info)) logger->size = 0LL;
  379. else {
  380. ULARGE_INTEGER l;
  381. l.HighPart = info.nFileSizeHigh;
  382. l.LowPart = info.nFileSizeLow;
  383. size = l.QuadPart;
  384. }
  385. char buffer[1024];
  386. void *address;
  387. unsigned long in, out;
  388. unsigned long charsize = 0;
  389. unsigned long error;
  390. int ret;
  391. int complained = 0;
  392. while (true) {
  393. /* Read data from the pipe. */
  394. address = &buffer;
  395. ret = try_read(logger, address, sizeof(buffer), &in, &complained);
  396. if (ret < 0) {
  397. CloseHandle(logger->read_handle);
  398. CloseHandle(logger->write_handle);
  399. HeapFree(GetProcessHeap(), 0, logger);
  400. return 2;
  401. }
  402. else if (ret) continue;
  403. if (*logger->rotate_online == NSSM_ROTATE_ONLINE_ASAP || (logger->size && size + (__int64) in >= logger->size)) {
  404. /* Look for newline. */
  405. unsigned long i;
  406. for (i = 0; i < in; i++) {
  407. if (buffer[i] == '\n') {
  408. if (! charsize) charsize = guess_charsize(address, in);
  409. i += charsize;
  410. /* Write up to the newline. */
  411. ret = try_write(logger, address, i, &out, &complained);
  412. if (ret < 0) {
  413. HeapFree(GetProcessHeap(), 0, logger);
  414. CloseHandle(logger->read_handle);
  415. CloseHandle(logger->write_handle);
  416. return 3;
  417. }
  418. size += (__int64) out;
  419. /* Rotate. */
  420. *logger->rotate_online = NSSM_ROTATE_ONLINE;
  421. TCHAR rotated[PATH_LENGTH];
  422. rotated_filename(logger->path, rotated, _countof(rotated), 0);
  423. /*
  424. Ideally we'd try the rename first then close the handle but
  425. MoveFile() will fail if the handle is still open so we must
  426. risk losing everything.
  427. */
  428. CloseHandle(logger->write_handle);
  429. if (MoveFile(logger->path, rotated)) {
  430. log_event(EVENTLOG_INFORMATION_TYPE, NSSM_EVENT_ROTATED, logger->service_name, logger->path, rotated, 0);
  431. size = 0LL;
  432. }
  433. else {
  434. error = GetLastError();
  435. if (error != ERROR_FILE_NOT_FOUND) {
  436. if (! (complained & COMPLAINED_ROTATE)) log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_ROTATE_FILE_FAILED, logger->service_name, logger->path, _T("MoveFile()"), rotated, error_string(error), 0);
  437. complained |= COMPLAINED_ROTATE;
  438. /* We can at least try to re-open the existing file. */
  439. logger->disposition = OPEN_ALWAYS;
  440. }
  441. }
  442. /* Reopen. */
  443. logger->write_handle = write_to_file(logger->path, logger->sharing, 0, logger->disposition, logger->flags);
  444. if (! logger->write_handle) {
  445. error = GetLastError();
  446. log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_CREATEFILE_FAILED, logger->path, error_string(error), 0);
  447. /* Oh dear. Now we can't log anything further. */
  448. HeapFree(GetProcessHeap(), 0, logger);
  449. CloseHandle(logger->read_handle);
  450. CloseHandle(logger->write_handle);
  451. return 4;
  452. }
  453. /* Resume writing after the newline. */
  454. address = (void *) ((char *) address + i);
  455. in -= i;
  456. }
  457. }
  458. }
  459. if (! size) {
  460. /* Write a BOM to the new file. */
  461. if (! charsize) charsize = guess_charsize(address, in);
  462. if (charsize == sizeof(wchar_t)) write_bom(logger, &out);
  463. size += (__int64) out;
  464. }
  465. /* Write the data, if any. */
  466. if (! in) continue;
  467. ret = try_write(logger, address, in, &out, &complained);
  468. size += (__int64) out;
  469. if (ret < 0) {
  470. HeapFree(GetProcessHeap(), 0, logger);
  471. CloseHandle(logger->read_handle);
  472. CloseHandle(logger->write_handle);
  473. return 3;
  474. }
  475. }
  476. HeapFree(GetProcessHeap(), 0, logger);
  477. CloseHandle(logger->read_handle);
  478. CloseHandle(logger->write_handle);
  479. return 0;
  480. }