/** Catches thrown signals. Performs necessary cleanup to ensure database is
* in a consistent state.
* @param signum the thrown signal
*/
static void handler(int signum)
{
int out = fileno(stdout);
int err = fileno(stderr);
const char *msg;
if(signum == SIGSEGV) {
msg = "\nerror: segmentation fault\n"
"Please submit a full bug report with --debug if appropriate.\n";
xwrite(err, msg, strlen(msg));
exit(signum);
} else if(signum == SIGINT || signum == SIGHUP) {
if(signum == SIGINT) {
msg = "\nInterrupt signal received\n";
} else {
msg = "\nHangup signal received\n";
}
xwrite(err, msg, strlen(msg));
if(alpm_trans_interrupt(config->handle) == 0) {
/* a transaction is being interrupted, don't exit pacman yet. */
return;
}
} else if(signum == SIGWINCH) {
columns_cache_reset();
return;
}
/* SIGINT/SIGHUP: no committing transaction, release it now and then exit pacman
* SIGTERM: release no matter what */
alpm_trans_release(config->handle);
/* output a newline to be sure we clear any line we may be on */
xwrite(out, "\n", 1);
cleanup(128 + signum);
}
static void winch_handler(int signum)
{
(void)signum; /* suppress unused variable warnings */
columns_cache_reset();
}
