Relocate source files to an src/ subdirectory

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

src/util.c

@@ -0,0 +1,77 @@
+/* Misc. shared utility functions for initctl, reboot and finit
+ *
+ * Copyright (c) 2016  Joachim Nilsson <troglobit@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <ctype.h>		/* isprint() */
+#include <string.h>
+#include <unistd.h>
+
+char *prognm = NULL;
+
+char *progname(char *arg0)
+{
+       prognm = strrchr(arg0, '/');
+       if (prognm)
+	       prognm++;
+       else
+	       prognm = arg0;
+
+       return prognm;
+}
+
+void do_sleep(unsigned int sec)
+{
+	while ((sec = sleep(sec)))
+		;
+}
+
+/* Allowed characters in job/id/name */
+static int isallowed(int ch)
+{
+	return isprint(ch);
+}
+
+/* Sanitize user input, make sure to NUL terminate. */
+char *sanitize(char *arg, size_t len)
+{
+	size_t i = 0;
+
+	while (isallowed(arg[i]) && i < len)
+		i++;
+
+	if (i + 1 < len) {
+		arg[i + 1] = 0;
+		return arg;
+	}
+
+	if (i > 1 && arg[i] == 0)
+		return arg;
+
+	return NULL;
+}
+
+/**
+ * Local Variables:
+ *  indent-tabs-mode: t
+ *  c-file-style: "linux"
+ * End:
+ */