Line data    Source code

       1             : /* Copyright (c) 2018-2021, The Tor Project, Inc. */
       2             : /* See LICENSE for licensing information */
       3             : 
       4             : /**
       5             :  * \file torerr_sys.c
       6             :  * \brief Subsystem object for the error handling subsystem.
       7             :  **/
       8             : 
       9             : #include "orconfig.h"
      10             : #include "lib/err/backtrace.h"
      11             : #include "lib/err/torerr.h"
      12             : #include "lib/err/torerr_sys.h"
      13             : #include "lib/subsys/subsys.h"
      14             : #include "lib/version/torversion.h"
      15             : 
      16             : #include <stddef.h>
      17             : 
      18             : static int
      19        5553 : subsys_torerr_initialize(void)
      20             : {
      21        5553 :   if (configure_backtrace_handler(get_version()) < 0)
      22             :     return -1;
      23        5553 :   tor_log_reset_sigsafe_err_fds();
      24             : 
      25        5553 :   return 0;
      26             : }
      27             : static void
      28         235 : subsys_torerr_shutdown(void)
      29             : {
      30             :   /* Stop handling signals with backtraces, then flush the logs. */
      31         235 :   clean_up_backtrace_handler();
      32         235 :   tor_log_flush_sigsafe_err_fds();
      33         235 : }
      34             : 
      35             : const subsys_fns_t sys_torerr = {
      36             :   .name = "err",
      37             :   SUBSYS_DECLARE_LOCATION(),
      38             :   /* Low-level error handling is a diagnostic feature, we want it to init
      39             :    * right after windows process security, and shutdown last.
      40             :    * (Security never shuts down.) */
      41             :   .level = -99,
      42             :   .supported = true,
      43             :   .initialize = subsys_torerr_initialize,
      44             :   .shutdown = subsys_torerr_shutdown
      45             : };