linux-kernel - [Patch] make installkernel configurable from command line (was Re: how to avoid that install.sh goes mad, if I am not root?)

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Date:	Mon, 24 Jan 2011 18:21:59 +0800
From:	Américo Wang <xiyou.wangcong@...il.com>
To:	Harald Dunkel <harri@...ics.de>
Cc:	linux-kernel@...r.kernel.org, linux-kbuild@...r.kenrel.org
Subject: [Patch] make installkernel configurable from command line (was Re:
 how to avoid that install.sh goes mad, if I am not root?)

On Fri, Jan 21, 2011 at 11:08:10PM +0100, Harald Dunkel wrote:
>-----BEGIN PGP SIGNED MESSAGE-----
>Hash: SHA1
>
>On 01/21/11 13:49, WANG Cong wrote:
>> On Thu, 20 Jan 2011 22:47:56 +0100, Mikael Pettersson wrote:
>>>
>>> First, at least on x86, the kernel will look for the 'installkernel'
>>> executable first in your own ~/bin/, so if you have that then it will
>>> override /sbin/installkernel.
>>>
>> 
>> That still doesn't look like a good solution.
>> 
>
>Same for me.
>
>Obviously running /sbin/installkernel is not reasonable for
>UID != 0 (or if $FAKEROOTKEY is set), so I would suggest to
>skip /sbin/installkernel and the default Lilo setup in
>install.sh for this case.
>

Will the patch below work for you?

With this patch, you should be able to specify your own installkernel
by "make INSTALLKERNEL=/your/installkernel install".

Signed-off-by: WANG Cong <xiyou.wangcong@...il.com>

---
diff --git a/Makefile b/Makefile
index 1f47495..44abded 100644
--- a/Makefile
+++ b/Makefile
@@ -327,7 +327,7 @@ OBJCOPY		= $(CROSS_COMPILE)objcopy
 OBJDUMP		= $(CROSS_COMPILE)objdump
 AWK		= awk
 GENKSYMS	= scripts/genksyms/genksyms
-INSTALLKERNEL  := installkernel
+INSTALLKERNEL  ?= /sbin/installkernel
 DEPMOD		= /sbin/depmod
 KALLSYMS	= scripts/kallsyms
 PERL		= perl
diff --git a/arch/x86/boot/install.sh b/arch/x86/boot/install.sh
index d13ec1c..c41f2b8 100644
--- a/arch/x86/boot/install.sh
+++ b/arch/x86/boot/install.sh
@@ -33,8 +33,7 @@ verify "$3"
 
 # User may have a custom install script
 
-if [ -x ~/bin/${INSTALLKERNEL} ]; then exec ~/bin/${INSTALLKERNEL} "$@"; fi
-if [ -x /sbin/${INSTALLKERNEL} ]; then exec /sbin/${INSTALLKERNEL} "$@"; fi
+if [ -x "${INSTALLKERNEL}" ]; then exec "${INSTALLKERNEL}" "$@"; fi
 
 # Default install - same as make zlilo
 

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