* Kern Sibbald, April 2000
*
* Version $Id$
- *
+ *
* Note, we probably should do a core dump for the serious
- * signals such as SIGBUS, SIGPFE, ...
- * Also, for SIGHUP and SIGUSR1, we should re-read the
- * configuration file. However, since this is a "general"
+ * signals such as SIGBUS, SIGPFE, ...
+ * Also, for SIGHUP and SIGUSR1, we should re-read the
+ * configuration file. However, since this is a "general"
* routine, we leave it to the individual daemons to
* tweek their signals after calling this routine.
*
/* main process id */
static pid_t main_pid = 0;
-/*
- * Handle signals here
- */
-extern "C" {
- static void signal_handler(int sig);
+const char *get_signal_name(int sig)
+{
+ if (sig < 0 || sig > BA_NSIG || !sig_names[sig]) {
+ return "Invalid signal number";
+ } else {
+ return sig_names[sig];
+ }
}
-static void signal_handler(int sig)
+/*
+ * Handle signals here
+ */
+extern "C" void signal_handler(int sig)
{
static int already_dead = 0;
/* If we come back more than once, get out fast! */
- if (already_dead > 1) {
- exit(1);
- }
- /* If we come back once, take normal exit */
if (already_dead) {
exit(1);
}
- Dmsg2(200, "sig=%d %s\n", sig, sig_names[sig]);
- /* Ignore certain signals */
+ Dmsg2(900, "sig=%d %s\n", sig, sig_names[sig]);
+ /* Ignore certain signals -- SIGUSR2 used to interrupt threads */
if (sig == SIGCHLD || sig == SIGUSR2) {
return;
}
static char *argv[4];
static char pid_buf[20];
static char btpath[400];
+ char buf[100];
pid_t pid;
int exelen = strlen(exepath);
- fprintf(stderr, "Kaboom! %s, %s got signal %d. Attempting traceback.\n",
- exename, my_name, sig);
+ fprintf(stderr, "Kaboom! %s, %s got signal %d. Attempting traceback.\n",
+ exename, my_name, sig);
+ fprintf(stderr, "Kaboom! exepath=%s\n", exepath);
if (exelen + 12 > (int)sizeof(btpath)) {
bstrncpy(btpath, "btraceback", sizeof(btpath));
} else {
- bstrncpy(btpath, exepath, sizeof(btpath));
+ bstrncpy(btpath, exepath, sizeof(btpath));
if (btpath[exelen-1] == '/') {
- btpath[exelen-1] = 0;
- }
+ btpath[exelen-1] = 0;
+ }
bstrncat(btpath, "/btraceback", sizeof(btpath));
}
if (exepath[exelen-1] != '/') {
strcat(exepath, "/");
}
strcat(exepath, exename);
- if (chdir(working_directory) !=0) { /* dump in working directory */
- Pmsg2(000, "chdir to %s failed. ERR=%s\n", working_directory, strerror(errno));
+ if (!working_directory) {
+ working_directory = buf;
+ *buf = 0;
+ }
+ if (*working_directory == 0) {
+ strcpy((char *)working_directory, "/tmp/");
+ }
+ if (chdir(working_directory) != 0) { /* dump in working directory */
+ berrno be;
+ Pmsg2(000, "chdir to %s failed. ERR=%s\n", working_directory, be.strerror());
+ strcpy((char *)working_directory, "/tmp/");
}
unlink("./core"); /* get rid of any old core file */
sprintf(pid_buf, "%d", (int)main_pid);
Dmsg1(300, "btpath=%s\n", btpath);
Dmsg1(300, "exepath=%s\n", exepath);
switch (pid = fork()) {
- case -1: /* error */
+ case -1: /* error */
fprintf(stderr, "Fork error: ERR=%s\n", strerror(errno));
- break;
- case 0: /* child */
- argv[0] = btpath; /* path to btraceback */
- argv[1] = exepath; /* path to exe */
- argv[2] = pid_buf;
- argv[3] = (char *)NULL;
+ break;
+ case 0: /* child */
+ argv[0] = btpath; /* path to btraceback */
+ argv[1] = exepath; /* path to exe */
+ argv[2] = pid_buf;
+ argv[3] = (char *)NULL;
fprintf(stderr, "Calling: %s %s %s\n", btpath, exepath, pid_buf);
- if (execv(btpath, argv) != 0) {
+ if (execv(btpath, argv) != 0) {
printf("execv: %s failed: ERR=%s\n", btpath, strerror(errno));
- }
- exit(-1);
- default: /* parent */
- break;
+ }
+ exit(-1);
+ default: /* parent */
+ break;
}
/* Parent continue here, waiting for child */
sigdefault.sa_flags = 0;
sigaction(sig, &sigdefault, NULL);
if (pid > 0) {
Dmsg0(500, "Doing waitpid\n");
- waitpid(pid, NULL, 0); /* wait for child to produce dump */
+ waitpid(pid, NULL, 0); /* wait for child to produce dump */
fprintf(stderr, "Traceback complete, attempting cleanup ...\n");
Dmsg0(500, "Done waitpid\n");
- exit_handler(sig); /* clean up if possible */
+ exit_handler(sig); /* clean up if possible */
Dmsg0(500, "Done exit_handler\n");
} else {
Dmsg0(500, "Doing sleep\n");
- bmicrosleep(30, 0);
+ bmicrosleep(30, 0);
}
fprintf(stderr, "It looks like the traceback worked ...\n");
}
sighandle.sa_handler = signal_handler;
sigfillset(&sighandle.sa_mask);
sigignore.sa_flags = 0;
- sigignore.sa_handler = SIG_IGN;
+ sigignore.sa_handler = SIG_IGN;
sigfillset(&sigignore.sa_mask);
sigdefault.sa_flags = 0;
sigdefault.sa_handler = SIG_DFL;
sigfillset(&sigdefault.sa_mask);
- sigaction(SIGPIPE, &sigignore, NULL);
- sigaction(SIGCHLD, &sighandle, NULL);
- sigaction(SIGCONT, &sigignore, NULL);
- sigaction(SIGPROF, &sigignore, NULL);
- sigaction(SIGWINCH, &sigignore, NULL);
- sigaction(SIGIO, &sighandle, NULL);
+ sigaction(SIGPIPE, &sigignore, NULL);
+ sigaction(SIGCHLD, &sighandle, NULL);
+ sigaction(SIGCONT, &sigignore, NULL);
+ sigaction(SIGPROF, &sigignore, NULL);
+ sigaction(SIGWINCH, &sigignore, NULL);
+ sigaction(SIGIO, &sighandle, NULL);
- sigaction(SIGINT, &sigdefault, NULL);
- sigaction(SIGXCPU, &sigdefault, NULL);
- sigaction(SIGXFSZ, &sigdefault, NULL);
+ sigaction(SIGINT, &sigdefault, NULL);
+ sigaction(SIGXCPU, &sigdefault, NULL);
+ sigaction(SIGXFSZ, &sigdefault, NULL);
- sigaction(SIGHUP, &sigignore, NULL);
- sigaction(SIGQUIT, &sighandle, NULL);
- sigaction(SIGILL, &sighandle, NULL);
- sigaction(SIGTRAP, &sighandle, NULL);
-/* sigaction(SIGABRT, &sighandle, NULL); */
+ sigaction(SIGHUP, &sigignore, NULL);
+ sigaction(SIGQUIT, &sighandle, NULL);
+ sigaction(SIGILL, &sighandle, NULL);
+ sigaction(SIGTRAP, &sighandle, NULL);
+/* sigaction(SIGABRT, &sighandle, NULL); */
#ifdef SIGEMT
- sigaction(SIGEMT, &sighandle, NULL);
+ sigaction(SIGEMT, &sighandle, NULL);
#endif
#ifdef SIGIOT
-/* sigaction(SIGIOT, &sighandle, NULL); used by debugger */
+/* sigaction(SIGIOT, &sighandle, NULL); used by debugger */
#endif
- sigaction(SIGBUS, &sighandle, NULL);
- sigaction(SIGFPE, &sighandle, NULL);
- sigaction(SIGKILL, &sighandle, NULL);
- sigaction(SIGUSR1, &sighandle, NULL);
- sigaction(SIGSEGV, &sighandle, NULL);
- sigaction(SIGUSR2, &sighandle, NULL);
- sigaction(SIGALRM, &sighandle, NULL);
- sigaction(SIGTERM, &sighandle, NULL);
+ sigaction(SIGBUS, &sighandle, NULL);
+ sigaction(SIGFPE, &sighandle, NULL);
+ sigaction(SIGKILL, &sighandle, NULL);
+ sigaction(SIGUSR1, &sighandle, NULL);
+ sigaction(SIGSEGV, &sighandle, NULL);
+ sigaction(SIGUSR2, &sighandle, NULL);
+ sigaction(SIGALRM, &sighandle, NULL);
+ sigaction(SIGTERM, &sighandle, NULL);
#ifdef SIGSTKFLT
- sigaction(SIGSTKFLT, &sighandle, NULL);
+ sigaction(SIGSTKFLT, &sighandle, NULL);
#endif
- sigaction(SIGSTOP, &sighandle, NULL);
- sigaction(SIGTSTP, &sighandle, NULL);
- sigaction(SIGTTIN, &sighandle, NULL);
- sigaction(SIGTTOU, &sighandle, NULL);
- sigaction(SIGURG, &sighandle, NULL);
- sigaction(SIGVTALRM, &sighandle, NULL);
+ sigaction(SIGSTOP, &sighandle, NULL);
+ sigaction(SIGTSTP, &sighandle, NULL);
+ sigaction(SIGTTIN, &sighandle, NULL);
+ sigaction(SIGTTOU, &sighandle, NULL);
+ sigaction(SIGURG, &sighandle, NULL);
+ sigaction(SIGVTALRM, &sighandle, NULL);
#ifdef SIGPWR
- sigaction(SIGPWR, &sighandle, NULL);
+ sigaction(SIGPWR, &sighandle, NULL);
#endif
#ifdef SIGWAITING
sigaction(SIGWAITING,&sighandle, NULL);
#endif
#ifdef SIGLWP
- sigaction(SIGLWP, &sighandle, NULL);
+ sigaction(SIGLWP, &sighandle, NULL);
#endif
#ifdef SIGFREEZE
sigaction(SIGFREEZE, &sighandle, NULL);
#endif
#ifdef SIGTHAW
- sigaction(SIGTHAW, &sighandle, NULL);
+ sigaction(SIGTHAW, &sighandle, NULL);
#endif
#ifdef SIGCANCEL
sigaction(SIGCANCEL, &sighandle, NULL);
#endif
#ifdef SIGLOST
- sigaction(SIGLOST, &sighandle, NULL);
+ sigaction(SIGLOST, &sighandle, NULL);
#endif
}
#endif
projects / bacula / bacula / blobdiff