+static void print_backtrace(unsigned int offset)
+{
+ void *frames[99];
+ size_t n_ptrs;
+ unsigned int i;
+ int outfd[2], infd[2];
+ int pathlen;
+ pid_t pid;
+
+ if (program_exec == NULL)
+ return;
+
+ pathlen = strlen(program_path);
+
+ n_ptrs = backtrace(frames, G_N_ELEMENTS(frames));
+ if (n_ptrs < offset)
+ return;
+
+ if (pipe(outfd) < 0)
+ return;
+
+ if (pipe(infd) < 0) {
+ close(outfd[0]);
+ close(outfd[1]);
+ return;
+ }
+
+ pid = fork();
+ if (pid < 0) {
+ close(outfd[0]);
+ close(outfd[1]);
+ close(infd[0]);
+ close(infd[1]);
+ return;
+ }
+
+ if (pid == 0) {
+ close(outfd[1]);
+ close(infd[0]);
+
+ dup2(outfd[0], STDIN_FILENO);
+ dup2(infd[1], STDOUT_FILENO);
+
+ execlp("addr2line", "-C", "-f", "-e", program_exec, NULL);
+
+ exit(EXIT_FAILURE);
+ }
+
+ close(outfd[0]);
+ close(infd[1]);
+
+ connman_error("++++++++ backtrace ++++++++");
+
+ for (i = offset; i < n_ptrs - 1; i++) {
+ Dl_info info;
+ char addr[20], buf[PATH_MAX * 2];
+ int len, written;
+ char *ptr, *pos;
+
+ dladdr(frames[i], &info);
+
+ len = snprintf(addr, sizeof(addr), "%p\n", frames[i]);
+ if (len < 0)
+ break;
+
+ written = write(outfd[1], addr, len);
+ if (written < 0)
+ break;
+
+ len = read(infd[0], buf, sizeof(buf));
+ if (len < 0)
+ break;
+
+ buf[len] = '\0';
+
+ pos = strchr(buf, '\n');
+ *pos++ = '\0';
+
+ if (strcmp(buf, "??") == 0) {
+ connman_error("#%-2u %p in %s", i - offset,
+ frames[i], info.dli_fname);
+ continue;
+ }
+
+ ptr = strchr(pos, '\n');
+ *ptr++ = '\0';
+
+ if (strncmp(pos, program_path, pathlen) == 0)
+ pos += pathlen + 1;
+
+ connman_error("#%-2u %p in %s() at %s", i - offset,
+ frames[i], buf, pos);
+ }
+
+ connman_error("+++++++++++++++++++++++++++");
+
+ kill(pid, SIGTERM);
+
+ close(outfd[1]);
+ close(infd[0]);
+}
+
+static void signal_handler(int signo)
+{
+ connman_error("Aborting (signal %d) [%s]", signo, program_exec);
+
+ print_backtrace(2);
+
+ exit(EXIT_FAILURE);
+}
+
+static void signal_setup(sighandler_t handler)
+{
+ struct sigaction sa;
+ sigset_t mask;
+
+ sigemptyset(&mask);
+ sa.sa_handler = handler;
+ sa.sa_mask = mask;
+ sa.sa_flags = 0;
+ sigaction(SIGBUS, &sa, NULL);
+ sigaction(SIGILL, &sa, NULL);
+ sigaction(SIGFPE, &sa, NULL);
+ sigaction(SIGSEGV, &sa, NULL);
+ sigaction(SIGABRT, &sa, NULL);
+ sigaction(SIGPIPE, &sa, NULL);
+}
+
+extern struct connman_debug_desc __start___debug[];
+extern struct connman_debug_desc __stop___debug[];
+
+static gchar **enabled = NULL;
+
+static connman_bool_t is_enabled(struct connman_debug_desc *desc)
+{
+ int i;
+
+ if (enabled == NULL)
+ return FALSE;
+
+ for (i = 0; enabled[i] != NULL; i++) {
+ if (desc->name != NULL && g_pattern_match_simple(enabled[i],
+ desc->name) == TRUE)
+ return TRUE;
+ if (desc->file != NULL && g_pattern_match_simple(enabled[i],
+ desc->file) == TRUE)
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+void __connman_log_enable(struct connman_debug_desc *start,
+ struct connman_debug_desc *stop)