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/*
* Copyright (C) 2019 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "panic.h"
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
static sc_panic_exit_fn panic_exit_fn = NULL;
static sc_panic_msg_fn panic_msg_fn = NULL;
void sc_panic(const char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
sc_panicv(fmt, ap);
va_end(ap);
}
void sc_panicv(const char *fmt, va_list ap) {
int errno_copy = errno;
if (panic_msg_fn != NULL) {
panic_msg_fn(fmt, ap, errno_copy);
} else {
vfprintf(stderr, fmt, ap);
if (errno != 0) {
fprintf(stderr, ": %s\n", strerror(errno_copy));
} else {
fprintf(stderr, "\n");
}
}
if (panic_exit_fn != NULL) {
panic_exit_fn();
}
exit(1);
}
sc_panic_exit_fn sc_set_panic_exit_fn(sc_panic_exit_fn fn) {
sc_panic_exit_fn old = panic_exit_fn;
panic_exit_fn = fn;
return old;
}
sc_panic_msg_fn sc_set_panic_msg_fn(sc_panic_msg_fn fn) {
sc_panic_msg_fn old = panic_msg_fn;
panic_msg_fn = fn;
return old;
}
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