autoupdater: Add safe_malloc function

safe_malloc is a wrapper around malloc that aborts the current
process if the memory allocation fails

Signed-off-by: Tobias Schramm <tobleminer@gmail.com>

admin/autoupdater/src/util.c

@@ -100,3 +100,15 @@ float get_uptime(void) {
 	fputs("autoupdater: error: unable to determine uptime\n", stderr);
 	exit(1);
 }
+
+void *safe_malloc(size_t size, char *errmsg) {
+	void *ret = malloc(size);
+
+	if (ret)
+		return ret;
+
+	if (errmsg)
+		fprintf(stderr, "autoupdater: error: %s\n", errmsg);
+
+	abort();
+}

admin/autoupdater/src/util.h

@@ -28,3 +28,4 @@
 void run_dir(const char *dir);
 void randomize(void);
 float get_uptime(void);
+void *safe_malloc(size_t size, char *errmsg);