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-rw-r--r--util.c70
1 files changed, 70 insertions, 0 deletions
diff --git a/util.c b/util.c
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+++ b/util.c
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+/*
+ * Copyright (C) 2014-2015 Tobias Klauser <tklauser@distanz.ch>
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#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;
+}