diff options
Diffstat (limited to 'src/log.c')
| -rw-r--r-- | src/log.c | 126 |
1 files changed, 111 insertions, 15 deletions
@@ -24,14 +24,20 @@ #endif #define _GNU_SOURCE +#include <stdio.h> +#include <unistd.h> #include <stdarg.h> -#include <syslog.h> #include <stdlib.h> +#include <string.h> +#include <syslog.h> #include <execinfo.h> #include <dlfcn.h> #include "connman.h" +static const char *program_exec; +static const char *program_path; + /** * connman_info: * @format: format string @@ -104,30 +110,115 @@ void connman_debug(const char *format, ...) va_end(ap); } -static void signal_handler(int signo) +static void print_backtrace(unsigned int offset) { - void *frames[64]; - char **symbols; + 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)); - symbols = backtrace_symbols(frames, n_ptrs); - if (symbols == NULL) { - connman_error("No backtrace symbols"); - exit(1); + 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); } - connman_error("Aborting (signal %d)", signo); + close(outfd[0]); + close(infd[1]); + connman_error("++++++++ backtrace ++++++++"); - for (i = 1; i < n_ptrs; i++) - connman_error("[%d]: %s", i - 1, symbols[i]); + 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("+++++++++++++++++++++++++++"); - g_free(symbols); - exit(1); + 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) @@ -224,10 +315,15 @@ void __connman_log_enable(struct connman_debug_desc *start, } } -int __connman_log_init(const char *debug, connman_bool_t detach) +int __connman_log_init(const char *program, const char *debug, + connman_bool_t detach) { + static char path[PATH_MAX]; int option = LOG_NDELAY | LOG_PID; + program_exec = program; + program_path = getcwd(path, sizeof(path)); + if (debug != NULL) enabled = g_strsplit_set(debug, ":, ", 0); @@ -238,7 +334,7 @@ int __connman_log_init(const char *debug, connman_bool_t detach) signal_setup(signal_handler); - openlog("connmand", option, LOG_DAEMON); + openlog(basename(program), option, LOG_DAEMON); syslog(LOG_INFO, "Connection Manager version %s", VERSION); |