Split into multiple files

For multiple reasons the program is now split:
- Make future porting to OpenBSD easier
- Assign header includes to individiual functions
- Make future program extensions easier
- Recompile only changed parts

1 files changed, 15 insertions, 0 deletions

diff --git a/hostname.c b/hostname.c
new file mode 100644
index 0000000..23c5a16
--- /dev/null
+++ b/hostname.c
@@ -0,0 +1,15 @@
+#include <err.h>
+#include <unistd.h>
+
+#include "util.h"
+
+const char *
+hostname(void)
+{
+	if (gethostname(buf, sizeof(buf)) == -1) {
+		warn("hostname");
+		return NULL;
+	}
+
+	return buf;
+}