From: Roy Marples <roy@marples.name>
Date: Mon, 5 Mar 2012 10:35:00 +0000 (+0000)
Subject: Set hostname via /proc if file is available
X-Git-Tag: v5.5.5~13
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8a1c7bcc1b3fc9bf79105751d207a8f5cd311dfc;p=thirdparty%2Fdhcpcd.git

Set hostname via /proc if file is available

On Linux, the hostname can be set via this file if available, precluding
the need for a `hostname` binary.

Signed-off-by: Dan McGee <dan@archlinux.org>
---

diff --git a/dhcpcd-hooks/30-hostname b/dhcpcd-hooks/30-hostname
index 65d1a13b..f2b35b46 100644
--- a/dhcpcd-hooks/30-hostname
+++ b/dhcpcd-hooks/30-hostname
@@ -21,7 +21,11 @@ need_hostname()
 try_hostname()
 {
 	if valid_domainname "$1"; then
-		hostname "$1"
+		if [ -w /proc/sys/kernel/hostname ]; then
+			echo "$1" >/proc/sys/kernel/hostname
+		else
+			hostname "$1"
+		fi
 	else
 		syslog err "Invalid hostname: $1"
 	fi