1 /*
2 * Copyright (c) 2019, The Linux Foundation. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above
10 * copyright notice, this list of conditions and the following
11 * disclaimer in the documentation and/or other materials provided
12 * with the distribution.
13 * * Neither the name of The Linux Foundation nor the names of its
14 * contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #ifndef VERIFY_PRINT_ERROR
31 #define VERIFY_PRINT_ERROR
32 #endif // VERIFY_PRINT_ERROR
33 #include <pthread.h>
34 #include <unistd.h>
35 #include <sys/inotify.h>
36 #include <sys/eventfd.h>
37 #include <poll.h>
38 #include <stdio.h>
39 #include <string.h>
40 #include <stdlib.h>
41 #include <errno.h>
42 #include <limits.h>
43
44 #include "apps_std.h"
45 #include "AEEstd.h"
46 #include "AEEStdErr.h"
47 #include "verify.h"
48 #include "remote_priv.h"
49 #include "adsp_current_process.h"
50 #include "adsp_current_process1.h"
51 #include "adspmsgd_adsp.h"
52 #include "adspmsgd_adsp1.h"
53 #include "rpcmem.h"
54
55 #define EVENT_SIZE ( sizeof (struct inotify_event) )
56 #define EVENT_BUF_LEN ( 1024 * ( EVENT_SIZE + 16 ) )
57 #ifndef AEE_EUNSUPPORTED
58 #define AEE_EUNSUPPORTED 20 // API is not supported 50
59 #endif
60 #define DEFAULT_ADSPMSGD_MEMORY_SIZE 8192
61 #define INVALID_HANDLE (remote_handle64)(-1)
62 #define ERRNO (errno == 0 ? -1 : errno)
63
64 struct log_config_watcher_params {
65 int fd;
66 int event_fd; // Duplicate fd to quit the poll
67 _cstring1_t* paths;
68 int* wd;
69 uint32 numPaths;
70 pthread_attr_t attr;
71 pthread_t thread;
72 unsigned char stopThread;
73 int asidToWatch;
74 char* fileToWatch;
75 char* asidFileToWatch;
76 char* pidFileToWatch;
77 boolean adspmsgdEnabled;
78 };
79
80 static struct log_config_watcher_params log_config_watcher[NUM_DOMAINS_EXTEND];
81 extern const char* __progname;
82
83 const char* get_domain_str(int domain);
84 remote_handle64 get_adsp_current_process1_handle(int domain);
85 remote_handle64 get_adspmsgd_adsp1_handle(int domain);
86
parseLogConfig(int dom,unsigned short mask,char * filenames)87 static int parseLogConfig(int dom, unsigned short mask, char* filenames){
88 _cstring1_t* filesToLog = NULL;
89 int filesToLogLen = 0;
90 char* tempFiles = NULL;
91 int nErr = AEE_SUCCESS;
92 char *saveptr = NULL;
93 char* path = NULL;
94 char delim[] = {','};
95 int maxPathLen = 0;
96 int i = 0;
97 remote_handle64 handle;
98
99 VERIFYC(filenames != NULL, AEE_EINVALIDFILENAME);
100
101 VERIFYC(NULL!= (tempFiles = malloc(sizeof(char) * (std_strlen(filenames) + 1))), AEE_ENOMEMORY);
102 std_strlcpy(tempFiles,filenames,std_strlen(filenames) + 1);
103
104 // Get the number of folders and max size needed
105 path = strtok_r (tempFiles, delim, &saveptr);
106 while (path != NULL){
107 maxPathLen = STD_MAX(maxPathLen, std_strlen(path)) + 1;
108 filesToLogLen++;
109 path = strtok_r (NULL, delim, &saveptr);
110 }
111
112 VERIFY_IPRINTF("%s: #files: %d max_len: %d\n", log_config_watcher[dom].fileToWatch, filesToLogLen, maxPathLen);
113
114 // Allocate memory
115 VERIFYC(NULL != (filesToLog = malloc(sizeof(_cstring1_t)*filesToLogLen)), AEE_ENOMEMORY);
116 for (i = 0; i < filesToLogLen; ++i){
117 VERIFYC(NULL != (filesToLog[i].data = malloc(sizeof(char) * maxPathLen)), AEE_ENOMEMORY);
118 filesToLog[i].dataLen = maxPathLen;
119 }
120
121 // Get the number of folders and max size needed
122 std_strlcpy(tempFiles,filenames,std_strlen(filenames) + 1);
123 i = 0;
124 path = strtok_r (tempFiles, delim, &saveptr);
125 while (path != NULL){
126 VERIFYC((filesToLog != NULL) && (filesToLog[i].data != NULL) &&
127 filesToLog[i].dataLen >= (int)strlen(path), AEE_EBADSIZE);
128 std_strlcpy(filesToLog[i].data, path, filesToLog[i].dataLen);
129 VERIFY_IPRINTF("%s: %s\n", log_config_watcher[dom].fileToWatch, filesToLog[i].data);
130 path = strtok_r (NULL, delim, &saveptr);
131 i++;
132 }
133
134 handle = get_adsp_current_process1_handle(dom);
135 if (handle != INVALID_HANDLE) {
136 VERIFY(AEE_SUCCESS == (nErr = adsp_current_process1_set_logging_params(handle, mask,filesToLog,filesToLogLen)));
137 } else {
138 VERIFY(AEE_SUCCESS == (nErr = adsp_current_process_set_logging_params(mask,filesToLog,filesToLogLen)));
139 }
140
141 bail:
142 if (filesToLog){
143 for (i = 0; i < filesToLogLen; ++i){
144 if (filesToLog[i].data != NULL){
145 free (filesToLog[i].data);
146 filesToLog[i].data = NULL;
147 }
148 }
149 free(filesToLog);
150 filesToLog = NULL;
151 }
152
153 if(tempFiles){
154 free(tempFiles);
155 tempFiles = NULL;
156 }
157 if(nErr != AEE_SUCCESS) {
158 VERIFY_EPRINTF("Error %x: parse log config failed. domain %d, mask %x, filename %s\n", nErr, dom, mask, filenames);
159 }
160 return nErr;
161 }
162 // Read log config given the filename
readLogConfigFromPath(int dom,const char * base,const char * file)163 static int readLogConfigFromPath(int dom, const char* base, const char* file){
164 int nErr = 0;
165 apps_std_FILE fp = -1;
166 uint64 len;
167 byte* buf = NULL;
168 int readlen = 0, eof;
169 unsigned short mask = 0;
170 char* path = NULL;
171 char* filenames = NULL;
172 boolean fileExists = FALSE;
173 int buf_addr = 0;
174 remote_handle64 handle;
175
176 len = std_snprintf(0, 0, "%s/%s", base, file) + 1;
177 VERIFYC(NULL != (path = malloc(sizeof(char) * len)), AEE_ENOMEMORY);
178 std_snprintf(path, (int)len, "%s/%s", base, file);
179 VERIFY(AEE_SUCCESS == (nErr = apps_std_fileExists(path,&fileExists)));
180 if (fileExists == FALSE){
181 VERIFY_IPRINTF("%s: Couldn't find file: %s\n",log_config_watcher[dom].fileToWatch, path);
182 nErr = AEE_ENOSUCHFILE;
183 goto bail;
184 }
185 if (log_config_watcher[dom].adspmsgdEnabled == FALSE){
186 handle = get_adspmsgd_adsp1_handle(dom);
187 if(handle != INVALID_HANDLE) {
188 adspmsgd_adsp1_init2(handle);
189 } else if(AEE_EUNSUPPORTED == (nErr = adspmsgd_adsp_init2())) {
190 nErr = adspmsgd_adsp_init(0, RPCMEM_HEAP_DEFAULT, 0, DEFAULT_ADSPMSGD_MEMORY_SIZE, &buf_addr);
191 }
192 if (nErr != AEE_SUCCESS){
193 VERIFY_EPRINTF("adspmsgd not supported. nErr=%x\n", nErr);
194 }else{
195 log_config_watcher[dom].adspmsgdEnabled = TRUE;
196 }
197 VERIFY_EPRINTF("Found %s. adspmsgd enabled \n", log_config_watcher[dom].fileToWatch);
198 }
199
200 VERIFY(AEE_SUCCESS == (nErr = apps_std_fopen(path, "r", &fp)));
201 VERIFY(AEE_SUCCESS == (nErr = apps_std_flen(fp, &len)));
202
203 VERIFYC(len < 511, AEE_EBADSIZE);
204 VERIFYC(NULL != (buf = calloc(1, sizeof(byte) * (len + 1))), AEE_ENOMEMORY); // extra 1 byte for null character
205 VERIFYC(NULL != (filenames = malloc(sizeof(byte) * len)), AEE_ENOMEMORY);
206 VERIFY(AEE_SUCCESS == (nErr = apps_std_fread(fp, buf, len, &readlen, &eof)));
207 VERIFYC((int)len == readlen, AEE_EFREAD);
208
209 VERIFY_IPRINTF("%s: Config file %s contents: %s\n", log_config_watcher[dom].fileToWatch, path, buf);
210
211 len = sscanf((const char*)buf, "0x%hx %511s", &mask, filenames);
212 switch (len){
213 case 1:
214 VERIFY_IPRINTF("%s: Setting log mask:0x%x", log_config_watcher[dom].fileToWatch, mask);
215 handle = get_adsp_current_process1_handle(dom);
216 if (handle != INVALID_HANDLE) {
217 VERIFY(AEE_SUCCESS == (nErr = adsp_current_process1_set_logging_params(handle,mask,NULL,0)));
218 } else {
219 VERIFY(AEE_SUCCESS == (nErr = adsp_current_process_set_logging_params(mask,NULL,0)));
220 }
221 break;
222 case 2:
223 VERIFY(AEE_SUCCESS == (nErr = parseLogConfig(dom, mask,filenames)));
224 VERIFY_IPRINTF("%s: Setting log mask:0x%x, filename:%s", log_config_watcher[dom].fileToWatch, mask, filenames);
225 break;
226 default:
227 VERIFY_EPRINTF("%s: No valid data found in config file %s", log_config_watcher[dom].fileToWatch, path);
228 nErr = AEE_EUNSUPPORTED;
229 goto bail;
230 }
231
232 bail:
233 if (buf != NULL){
234 free(buf);
235 buf = NULL;
236 }
237
238 if (filenames != NULL){
239 free(filenames);
240 filenames = NULL;
241 }
242
243 if (fp != -1){
244 apps_std_fclose(fp);
245 }
246
247 if (path != NULL){
248 free(path);
249 path = NULL;
250 }
251
252 if(nErr != AEE_SUCCESS) {
253 VERIFY_IPRINTF("Error %x: fopen failed for %s/%s. (%s)\n", nErr, base, file, strerror(ERRNO));
254 }
255 return nErr;
256 }
257
258
259 // Read log config given the watch descriptor
readLogConfigFromEvent(int dom,struct inotify_event * event)260 static int readLogConfigFromEvent(int dom, struct inotify_event *event){
261 int i = 0;
262
263 // Ensure we are looking at the right file
264 for (i = 0; i < (int)log_config_watcher[dom].numPaths; ++i){
265 if (log_config_watcher[dom].wd[i] == event->wd ){
266 if(std_strcmp(log_config_watcher[dom].fileToWatch, event->name) == 0){
267 return readLogConfigFromPath(dom, log_config_watcher[dom].paths[i].data, log_config_watcher[dom].fileToWatch);
268 }else if (std_strcmp(log_config_watcher[dom].asidFileToWatch, event->name) == 0) {
269 return readLogConfigFromPath(dom, log_config_watcher[dom].paths[i].data, log_config_watcher[dom].asidFileToWatch);
270 }else if (std_strcmp(log_config_watcher[dom].pidFileToWatch, event->name) == 0){
271 return readLogConfigFromPath(dom, log_config_watcher[dom].paths[i].data, log_config_watcher[dom].pidFileToWatch);
272 }
273 }
274 }
275 VERIFY_IPRINTF("%s: Watch descriptor %d not valid for current process", log_config_watcher[dom].fileToWatch, event->wd);
276 return AEE_SUCCESS;
277 }
278
279
280 // Read log config given the watch descriptor
resetLogConfigFromEvent(int dom,struct inotify_event * event)281 static int resetLogConfigFromEvent(int dom, struct inotify_event *event) {
282 int i = 0;
283 remote_handle64 handle;
284
285 // Ensure we are looking at the right file
286 for (i = 0; i < (int)log_config_watcher[dom].numPaths; ++i){
287 if (log_config_watcher[dom].wd[i] == event->wd ){
288 if( (std_strcmp(log_config_watcher[dom].fileToWatch, event->name) == 0)||
289 (std_strcmp(log_config_watcher[dom].asidFileToWatch, event->name) == 0) ||
290 (std_strcmp(log_config_watcher[dom].pidFileToWatch, event->name) == 0) ) {
291 if (log_config_watcher[dom].adspmsgdEnabled == TRUE){
292 handle = get_adspmsgd_adsp1_handle(dom);
293 if(handle != INVALID_HANDLE) {
294 adspmsgd_adsp1_deinit(handle);
295 } else {
296 adspmsgd_adsp_deinit();
297 }
298 }
299 handle = get_adsp_current_process1_handle(dom);
300 if (handle != INVALID_HANDLE) {
301 return adsp_current_process1_set_logging_params(handle,0,NULL,0);
302 } else {
303 return adsp_current_process_set_logging_params(0,NULL,0);
304 }
305 }
306 }
307 }
308 VERIFY_IPRINTF("%s: Watch descriptor %d not valid for current process", log_config_watcher[dom].fileToWatch, event->wd);
309 return AEE_SUCCESS;
310 }
311
312
file_watcher_thread(void * arg)313 static void* file_watcher_thread(void *arg) {
314 int dom = (int)(uintptr_t)arg;
315 int ret = 0;
316 int length = 0;
317 int nErr = AEE_SUCCESS;
318 int i = 0;
319 char buffer[EVENT_BUF_LEN];
320 struct pollfd pfd[] = {
321 {log_config_watcher[dom].fd, POLLIN, 0},
322 {log_config_watcher[dom].event_fd, POLLIN, 0}
323 };
324 const char* fileExtension = ".farf";
325 int len = 0;
326 remote_handle64 handle;
327
328 // Check for the presence of the <process_name>.farf file at bootup
329 for (i = 0; i < (int)log_config_watcher[dom].numPaths; ++i){
330 if (0 == readLogConfigFromPath(dom, log_config_watcher[dom].paths[i].data, log_config_watcher[dom].fileToWatch)){
331 VERIFY_IPRINTF("%s: Log config File %s found.\n", log_config_watcher[dom].fileToWatch, log_config_watcher[dom].paths[i].data );
332 }
333 }
334
335 while(log_config_watcher[dom].stopThread == 0){
336 // Block forever
337 ret = poll(pfd, 2, -1);
338 if(ret < 0){
339 VERIFY_EPRINTF("%s: Error polling for file change. Runtime FARF will not work for this process. errno=%x !", log_config_watcher[dom].fileToWatch, errno);
340 break;
341 } else if (pfd[1].revents & POLLIN) { // Check for exit
342 VERIFY_IPRINTF("Received exit.\n");
343 break;
344 } else {
345 length = read( log_config_watcher[dom].fd, buffer, EVENT_BUF_LEN );
346 i = 0;
347 while ( i < length ) {
348 struct inotify_event *event = ( struct inotify_event * ) &buffer[ i ];
349 if ( event->len ) {
350 // Get the asiD for the current process
351 // Do it once only
352 if (log_config_watcher[dom].asidToWatch == -1){
353 handle = get_adsp_current_process1_handle(dom);
354 if (handle != INVALID_HANDLE) {
355 VERIFY(AEE_SUCCESS == (nErr = adsp_current_process1_getASID(handle,(unsigned int*)&log_config_watcher[dom].asidToWatch )));
356 } else {
357 VERIFY(AEE_SUCCESS == (nErr = adsp_current_process_getASID((unsigned int*)&log_config_watcher[dom].asidToWatch )));
358 }
359 len = strlen(fileExtension) + strlen(__TOSTR__(INT_MAX));
360 VERIFYC(NULL != (log_config_watcher[dom].asidFileToWatch = malloc(sizeof(char) * len)), AEE_ENOMEMORY);
361 snprintf(log_config_watcher[dom].asidFileToWatch, len, "%d%s", log_config_watcher[dom].asidToWatch, fileExtension);
362 VERIFY_IPRINTF("%s: Watching ASID file %s\n", log_config_watcher[dom].fileToWatch, log_config_watcher[dom].asidFileToWatch);
363 }
364
365 VERIFY_IPRINTF("%s: %s %d.\n", log_config_watcher[dom].fileToWatch, event->name, event->mask );
366 if ( (event->mask & IN_CREATE) || (event->mask & IN_MODIFY)) {
367 VERIFY_IPRINTF("%s: File %s created.\n", log_config_watcher[dom].fileToWatch, event->name );
368 if (0 != readLogConfigFromEvent(dom, event)){
369 VERIFY_EPRINTF("%s: Error reading config file %s", log_config_watcher[dom].fileToWatch, log_config_watcher[dom].paths[i].data);
370 }
371 }
372 else if ( event->mask & IN_DELETE ) {
373 VERIFY_IPRINTF("%s: File %s deleted.\n", log_config_watcher[dom].fileToWatch, event->name );
374 if (0 != resetLogConfigFromEvent(dom, event)){
375 VERIFY_EPRINTF("%s: Error resetting FARF runtime log config" ,log_config_watcher[dom].fileToWatch);
376 }
377 }
378 }
379
380 i += EVENT_SIZE + event->len;
381 }
382 }
383 }
384 bail:
385 if (nErr != AEE_SUCCESS){
386 VERIFY_EPRINTF("Error %x: file watcher thread exited. Runtime FARF will not work for this process. filename %s\n", nErr, log_config_watcher[dom].fileToWatch);
387 }
388 return NULL;
389 }
390
deinitFileWatcher(int dom)391 void deinitFileWatcher(int dom) {
392 int i = 0;
393 uint64 stop = 10;
394 remote_handle64 handle;
395
396 log_config_watcher[dom].stopThread = 1;
397 if (0 < log_config_watcher[dom].event_fd) {
398 if (write(log_config_watcher[dom].event_fd, &stop, sizeof(uint64)) != sizeof(uint64)) {
399 VERIFY_EPRINTF("Error: write failed: Cannot set exit flag to watcher thread.\n");
400 }
401 }
402 if (log_config_watcher[dom].thread) {
403 pthread_join(log_config_watcher[dom].thread, NULL);
404 log_config_watcher[dom].thread = 0;
405 }
406 if (log_config_watcher[dom].fileToWatch){
407 free (log_config_watcher[dom].fileToWatch);
408 log_config_watcher[dom].fileToWatch = 0;
409 }
410 if (log_config_watcher[dom].asidFileToWatch){
411 free (log_config_watcher[dom].asidFileToWatch);
412 log_config_watcher[dom].asidFileToWatch = 0;
413 }
414 if (log_config_watcher[dom].pidFileToWatch){
415 free (log_config_watcher[dom].pidFileToWatch);
416 log_config_watcher[dom].pidFileToWatch = 0;
417 }
418 if (log_config_watcher[dom].wd){
419 for (i = 0; i < (int)log_config_watcher[dom].numPaths; ++i){
420 if (log_config_watcher[dom].wd[i] != 0){
421 inotify_rm_watch( log_config_watcher[dom].fd, log_config_watcher[dom].wd[i] );
422 }
423 }
424 free(log_config_watcher[dom].wd);
425 log_config_watcher[dom].wd = NULL;
426 }
427 if (log_config_watcher[dom].paths){
428 for (i = 0; i < (int)log_config_watcher[dom].numPaths; ++i){
429 if (log_config_watcher[dom].paths[i].data){
430 free(log_config_watcher[dom].paths[i].data);
431 log_config_watcher[dom].paths[i].data = NULL;
432 }
433 }
434 free(log_config_watcher[dom].paths);
435 log_config_watcher[dom].paths = NULL;
436 }
437 if(log_config_watcher[dom].fd != 0){
438 close(log_config_watcher[dom].fd);
439 log_config_watcher[dom].fd = 0;
440 }
441 if (log_config_watcher[dom].adspmsgdEnabled == TRUE){
442 handle = get_adspmsgd_adsp1_handle(dom);
443 if (handle != INVALID_HANDLE) {
444 adspmsgd_adsp1_deinit(handle);
445 } else {
446 adspmsgd_adsp_deinit();
447 }
448 log_config_watcher[dom].adspmsgdEnabled = FALSE;
449 }
450
451 if(log_config_watcher[dom].event_fd != 0){
452 close(log_config_watcher[dom].event_fd);
453 log_config_watcher[dom].event_fd = 0;
454 }
455
456 log_config_watcher[dom].numPaths = 0;
457 }
458
initFileWatcher(int dom)459 int initFileWatcher(int dom) {
460 int nErr = AEE_SUCCESS;
461 const char* fileExtension = ".farf";
462 uint32 len = 0;
463 uint16 maxPathLen = 0;
464 int i = 0;
465 char* name = NULL;
466
467 memset(&log_config_watcher[dom], 0, sizeof(struct log_config_watcher_params));
468 log_config_watcher[dom].asidToWatch = 0;
469
470 VERIFYC(NULL != (name = std_basename(__progname)), AEE_EINVALIDPROCNAME);
471
472 len = strlen(name) + strlen(fileExtension) + 1;
473 VERIFYC(NULL != (log_config_watcher[dom].fileToWatch = malloc(sizeof(char) * len)), AEE_ENOMEMORY);
474 snprintf(log_config_watcher[dom].fileToWatch, len, "%s%s", name, fileExtension);
475
476 len = strlen(fileExtension) + strlen(__TOSTR__(INT_MAX));
477 VERIFYC(NULL != (log_config_watcher[dom].pidFileToWatch = malloc(sizeof(char) * len)), AEE_ENOMEMORY);
478 snprintf(log_config_watcher[dom].pidFileToWatch, len, "%d%s", getpid(), fileExtension);
479
480 VERIFY_IPRINTF("%s: Watching PID file: %s\n", log_config_watcher[dom].fileToWatch, log_config_watcher[dom].pidFileToWatch);
481
482 log_config_watcher[dom].fd = inotify_init();
483 if (log_config_watcher[dom].fd < 0){
484 nErr = AEE_EINVALIDFD;
485 VERIFY_EPRINTF("Error %x: inotify_init failed. errno = %s\n", nErr, strerror(errno));
486 goto bail;
487 }
488
489 // Duplicate the fd, so we can use it to quit polling
490 log_config_watcher[dom].event_fd = eventfd(0, 0);
491 if (log_config_watcher[dom].event_fd < 0){
492 nErr = AEE_EINVALIDFD;
493 VERIFY_EPRINTF("Error %x: eventfd in dup failed. errno %s\n", nErr, strerror(errno));
494 goto bail;
495 }
496 VERIFY_IPRINTF("fd = %d dupfd=%d\n", log_config_watcher[dom].fd, log_config_watcher[dom].event_fd);
497
498 // Get the required size
499 apps_std_get_search_paths_with_env("ADSP_LIBRARY_PATH", ";", NULL, 0,
500 &log_config_watcher[dom].numPaths, &maxPathLen);
501
502 maxPathLen += + 1;
503
504 // Allocate memory
505 VERIFYC(NULL != (log_config_watcher[dom].paths
506 = malloc(sizeof(_cstring1_t) * log_config_watcher[dom].numPaths)), AEE_ENOMEMORY);
507 VERIFYC(NULL != (log_config_watcher[dom].wd
508 = malloc(sizeof(int) * log_config_watcher[dom].numPaths)), AEE_ENOMEMORY);
509
510 for (i = 0; i < (int)log_config_watcher[dom].numPaths; ++i){
511 VERIFYC( NULL != (log_config_watcher[dom].paths[i].data
512 = malloc(sizeof(char) * maxPathLen)), AEE_ENOMEMORY);
513 log_config_watcher[dom].paths[i].dataLen = maxPathLen;
514 }
515
516 // Get the paths
517 VERIFY(AEE_SUCCESS == (nErr = apps_std_get_search_paths_with_env("ADSP_LIBRARY_PATH", ";",
518 log_config_watcher[dom].paths, log_config_watcher[dom].numPaths, &len, &maxPathLen)));
519
520 maxPathLen += 1;
521
522 VERIFY_IPRINTF("%s: Watching folders:\n", log_config_watcher[dom].fileToWatch);
523 for (i = 0; i < (int)log_config_watcher[dom].numPaths; ++i){
524 // Watch for creation, deletion and modification of files in path
525 VERIFY_IPRINTF("log file watcher: %s: %s\n",log_config_watcher[dom].fileToWatch, log_config_watcher[dom].paths[i].data);
526 if((log_config_watcher[dom].wd[i] = inotify_add_watch (log_config_watcher[dom].fd,
527 log_config_watcher[dom].paths[i].data, IN_CREATE | IN_DELETE)) < 0) {
528 VERIFY_EPRINTF("Unable to add watcher for folder %s : errno is %s\n", log_config_watcher[dom].paths[i].data, strerror(ERRNO));
529 }
530 }
531
532 // Create a thread to watch for file changes
533 log_config_watcher[dom].asidToWatch = -1;
534 log_config_watcher[dom].stopThread = 0;
535 pthread_create(&log_config_watcher[dom].thread, NULL, file_watcher_thread, (void*)(uintptr_t)dom);
536 bail:
537 if (nErr!=AEE_SUCCESS){
538 VERIFY_EPRINTF("Error %x: Failed to register with inotify file %s. Runtime FARF will not work for the process %s!", nErr, log_config_watcher[dom].fileToWatch, name);
539 deinitFileWatcher(dom);
540 }
541
542 return nErr;
543 }
544