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.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 util.c (limited to 'util.c') diff --git a/util.c b/util.c new file mode 100644 index 0000000..e399f31 --- /dev/null +++ b/util.c @@ -0,0 +1,70 @@ +/* + * 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 . + */ + +#include +#include + +#include "util.h" + +void *xmalloc(size_t size) +{ + void *ptr; + + if (size == 0) + panic("malloc: size 0\n"); + + ptr = malloc(size); + if (!ptr) + panic("malloc: out of memory\n"); + + return ptr; +} + +void *xzalloc(size_t size) +{ + void *ptr = xmalloc(size); + memset(ptr, 0, size); + return ptr; +} + +void *xrealloc(void *ptr, size_t size) +{ + void *newptr; + + if (size == 0) + panic("realloc: size 0\n"); + + newptr = realloc(ptr, size); + if (!newptr) { + free(ptr); + panic("realloc: out of memory\n"); + } + + return newptr; +} + +char *xstrdup(const char *s) +{ + size_t len = strlen(s) + 1; + char *ret = xmalloc(len); + + memcpy(ret, s, len); + + return ret; +} -- cgit v1.2.3-54-g00ecf