From 2fc625bbab024176edd8fa9ba447032cb2802356 Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Sat, 3 Dec 2011 05:46:48 -0500
Subject: [PATCH] rc: use /etc/hostname if available

This is significantly less overhead than an init script.
---
 src/openrc/rc.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/src/openrc/rc.c b/src/openrc/rc.c
index 5bee9e6cf..b5cec8739 100644
--- a/src/openrc/rc.c
+++ b/src/openrc/rc.c
@@ -473,12 +473,33 @@ handle_signal(int sig)
 	errno = serrno;
 }
 
+static void
+do_early_hostname(void)
+{
+#ifdef __linux__
+	/* Set hostname if available */
+	char *buffer = NULL;
+	size_t len;
+
+	if (rc_getfile(RC_SYSCONFDIR "/hostname", &buffer, &len)) {
+		if (buffer[len - 2] == '\n')
+			buffer[--len - 1] = '\0';
+		if (sethostname(buffer, len)) {
+			/* ignore */;
+		}
+		free(buffer);
+	}
+#endif
+}
+
 static void
 do_sysinit(void)
 {
 	struct utsname uts;
 	const char *sys;
 
+	do_early_hostname();
+
 	/* exec init-early.sh if it exists
 	 * This should just setup the console to use the correct
 	 * font. Maybe it should setup the keyboard too? */