From 70d3f132f12423a43ee5454f747f58fdde4dfb8e Mon Sep 17 00:00:00 2001 From: Tobias Klauser Date: Fri, 6 Feb 2015 17:26:41 +0100 Subject: Initial import, still work in progress --- util.h | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 util.h (limited to 'util.h') diff --git a/util.h b/util.h new file mode 100644 index 0000000..8a21467 --- /dev/null +++ b/util.h @@ -0,0 +1,58 @@ +/* + * Copyright (C) 2014-2015 Tobias Klauser + * Copyright (C) 2009-2012 Daniel Borkmann + * + * This file is part of llmnrd. + * + * llmnrd is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, version 2 of the License. + * + * llmnrd 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 llmnrd. If not, see . + */ + +#ifndef UTIL_H +#define UTIL_H + +#include +#include +#include + +#include "compiler.h" + +#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) + +/* + * min() macro with strict type-checking. + * Taken from linux/kernel.h + */ +#undef min +#define min(x, y) ({ \ + typeof(x) _min1 = (x); \ + typeof(y) _min2 = (y); \ + (void) (&_min1 == &_min2); \ + _min1 < _min2 ? _min1 : _min2; }) + +static inline void __noreturn panic(const char *fmt, ...) +{ + va_list vl; + + va_start(vl, fmt); + vfprintf(stderr, fmt, vl); + va_end(vl); + + exit(EXIT_FAILURE); +} + +void *xmalloc(size_t size); +void *xzalloc(size_t size); +void *xrealloc(void *ptr, size_t size); +char *xstrdup(const char *s); + +#endif /* UTIL_H */ -- cgit v1.2.3-54-g00ecf