Mercurial > trustbridge
comparison common/util.c @ 1332:8362e30f7b55
(issue139) Check that pid is not running if the lock can be aquired
If the lock on the lockfile can be aquired it might still be
possible that another process is running. So we read the
pid from the lockfile and check if another process with the
same installation prefix as us is running.
| author | Andre Heinecke <andre.heinecke@intevation.de> |
|---|---|
| date | Wed, 15 Oct 2014 14:19:46 +0200 |
| parents | 2bacaec6e101 |
| children | b90df38bb6dc |
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| 1331:8897c90b8166 | 1332:8362e30f7b55 |
|---|---|
| 312 return ret; | 312 return ret; |
| 313 } | 313 } |
| 314 #else /* WIN32 */ | 314 #else /* WIN32 */ |
| 315 | 315 |
| 316 char * | 316 char * |
| 317 get_install_dir() | 317 get_proc_install_dir(const char *proc) |
| 318 { | 318 { |
| 319 char *retval = NULL, | 319 char *retval = NULL, |
| 320 *p = NULL, | 320 *procpath = NULL, |
| 321 buf[MAX_PATH_LINUX]; | 321 *p = NULL, |
| 322 buf[MAX_PATH_LINUX]; | |
| 322 ssize_t ret; | 323 ssize_t ret; |
| 323 size_t path_len = 0; | 324 size_t path_len = 0; |
| 324 | 325 |
| 325 ret = readlink ("/proc/self/exe", buf, MAX_PATH_LINUX); | 326 if (!proc) |
| 327 { | |
| 328 return NULL; | |
| 329 } | |
| 330 | |
| 331 xasprintf(&procpath, "/proc/%s/exe", proc); | |
| 332 | |
| 333 ret = readlink (procpath, buf, MAX_PATH_LINUX); | |
| 334 xfree(procpath); | |
| 335 procpath = NULL; | |
| 336 | |
| 326 if (ret <= 0) | 337 if (ret <= 0) |
| 327 { | 338 { |
| 328 ERRORPRINTF ("readlink failed\n"); | 339 ERRORPRINTF ("readlink failed\n"); |
| 329 return NULL; | 340 return NULL; |
| 330 } | 341 } |
| 344 retval = xmalloc (path_len + 1); | 355 retval = xmalloc (path_len + 1); |
| 345 strncpy (retval, buf, path_len); | 356 strncpy (retval, buf, path_len); |
| 346 retval[path_len] = '\0'; | 357 retval[path_len] = '\0'; |
| 347 | 358 |
| 348 return retval; | 359 return retval; |
| 360 } | |
| 361 | |
| 362 char * | |
| 363 get_install_dir() | |
| 364 { | |
| 365 return get_proc_install_dir("self"); | |
| 349 } | 366 } |
| 350 | 367 |
| 351 bool | 368 bool |
| 352 is_system_install() | 369 is_system_install() |
| 353 { | 370 { |