static void cmd_shutdown(struct watchman_client *client, json_t *args) {
json_t *resp = make_response();
unused_parameter(args);
w_log(W_LOG_ERR, "shutdown-server was requested, exiting!\n");
w_request_shutdown();
set_prop(resp, "shutdown-server", json_true());
send_and_dispose_response(client, resp);
}
static void crash_handler(int signo, siginfo_t *si, void *ucontext) {
const char *reason = "";
unused_parameter(ucontext);
if (si) {
switch (si->si_signo) {
case SIGILL:
switch (si->si_code) {
case ILL_ILLOPC:
reason = "illegal opcode";
break;
case ILL_ILLOPN:
reason = "illegal operand";
break;
case ILL_ILLADR:
reason = "illegal addressing mode";
break;
case ILL_ILLTRP:
reason = "illegal trap";
break;
case ILL_PRVOPC:
reason = "privileged opcode";
break;
case ILL_PRVREG:
reason = "privileged register";
break;
case ILL_COPROC:
reason = "co-processor error";
break;
case ILL_BADSTK:
reason = "internal stack error";
break;
}
break;
case SIGFPE:
switch (si->si_code) {
case FPE_INTDIV:
reason = "integer divide by zero";
break;
case FPE_INTOVF:
reason = "integer overflow";
break;
case FPE_FLTDIV:
reason = "floating point divide by zero";
break;
case FPE_FLTOVF:
reason = "floating point overflow";
break;
case FPE_FLTUND:
reason = "floating point underflow";
break;
case FPE_FLTRES:
reason = "floating point inexact result";
break;
case FPE_FLTINV:
reason = "invalid floating point operation";
break;
case FPE_FLTSUB:
reason = "subscript out of range";
break;
}
break;
case SIGSEGV:
switch (si->si_code) {
case SEGV_MAPERR:
reason = "address not mapped to object";
break;
case SEGV_ACCERR:
reason = "invalid permissions for mapped object";
break;
}
break;
#ifdef SIGBUS
case SIGBUS:
switch (si->si_code) {
case BUS_ADRALN:
reason = "invalid address alignment";
break;
case BUS_ADRERR:
reason = "non-existent physical address";
break;
}
break;
#endif
}
}
if (si) {
dprintf(STDERR_FILENO,
"Terminating due to signal %d %s "
"generated by pid=%d uid=%d. %s (%p)\n",
signo, w_strsignal(signo), si->si_pid, si->si_uid,
reason, si->si_value.sival_ptr);
} else {
dprintf(STDERR_FILENO, "Terminating due to signal %d %s. %s\n",
signo, w_strsignal(signo), reason);
}
#if defined(HAVE_BACKTRACE) && defined(HAVE_BACKTRACE_SYMBOLS_FD)
{
void *array[24];
size_t size = backtrace(array, sizeof(array)/sizeof(array[0]));
backtrace_symbols_fd(array, size, STDERR_FILENO);
}
#endif
if (signo == SIGTERM) {
w_request_shutdown();
return;
}
abort();
}
