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https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-11-10 13:13:44 +01:00
let children survive sigint, sigterm, etc.
this was biting us because ^c would get delivered to all of them, maybe because they were all still listening to stdin? svn:r2197
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@ -449,7 +449,7 @@ int circuit_extend(cell_t *cell, circuit_t *circ) {
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} else if (rh.length == 4+2+ONIONSKIN_CHALLENGE_LEN+DIGEST_LEN) {
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old_format = 0;
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} else {
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log_fn(LOG_WARN, "Wrong length on extend cell. Closing circuit.");
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log_fn(LOG_WARN, "Wrong length %d on extend cell. Closing circuit.", rh.length);
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return -1;
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}
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@ -207,6 +207,7 @@ static int cpuworker_main(void *data) {
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#ifndef MS_WINDOWS
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connection_free_all(); /* so the child doesn't hold the parent's fd's open */
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#endif
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handle_signals(0); /* ignore interrupts from the keyboard, etc */
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dup_onion_keys(&onion_key, &last_onion_key);
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@ -641,6 +641,7 @@ static int dnsworker_main(void *data) {
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#ifndef MS_WINDOWS
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connection_free_all(); /* so the child doesn't hold the parent's fd's open */
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#endif
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handle_signals(0); /* ignore interrupts from the keyboard, etc */
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for(;;) {
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@ -1002,6 +1002,26 @@ void exit_function(void)
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#endif
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}
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/** Set up the signal handlers for either parent or child. */
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void handle_signals(int is_parent)
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{
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#ifndef MS_WINDOWS /* do signal stuff only on unix */
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struct sigaction action;
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action.sa_flags = 0;
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sigemptyset(&action.sa_mask);
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action.sa_handler = is_parent ? catch : SIG_IGN;
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sigaction(SIGINT, &action, NULL); /* do a controlled slow shutdown */
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sigaction(SIGTERM, &action, NULL); /* to terminate now */
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sigaction(SIGPIPE, &action, NULL); /* otherwise sigpipe kills us */
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sigaction(SIGUSR1, &action, NULL); /* dump stats */
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sigaction(SIGHUP, &action, NULL); /* to reload config, retry conns, etc */
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if(is_parent)
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sigaction(SIGCHLD, &action, NULL); /* handle dns/cpu workers that exit */
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#endif /* signal stuff */
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}
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/** Main entry point for the Tor command-line client.
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*/
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static int tor_init(int argc, char *argv[]) {
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@ -1031,21 +1051,7 @@ static int tor_init(int argc, char *argv[]) {
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client_dns_init(); /* init the client dns cache */
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}
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#ifndef MS_WINDOWS /* do signal stuff only on unix */
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{
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struct sigaction action;
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action.sa_flags = 0;
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sigemptyset(&action.sa_mask);
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action.sa_handler = catch;
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sigaction(SIGINT, &action, NULL); /* do a controlled slow shutdown */
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sigaction(SIGTERM, &action, NULL); /* to terminate now */
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sigaction(SIGPIPE, &action, NULL); /* otherwise sigpipe kills us */
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sigaction(SIGUSR1, &action, NULL); /* dump stats */
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sigaction(SIGHUP, &action, NULL); /* to reload config, retry conns, etc */
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sigaction(SIGCHLD, &action, NULL); /* handle dns/cpu workers that exit */
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}
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#endif /* signal stuff */
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handle_signals(1);
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crypto_global_init();
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crypto_seed_rng();
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@ -1204,6 +1204,7 @@ int server_mode(void);
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int advertised_server_mode(void);
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int proxy_mode(void);
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void handle_signals(int is_parent);
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void tor_cleanup(void);
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/********************************* onion.c ***************************/
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