linux-ext4 - Re: [PATCH, RFC] Add more intelligent handling of the mke2fs.conf installation process

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Date:	Wed, 16 Jul 2008 11:24:36 -0700
From:	Mingming Cao <cmm@...ibm.com>
To:	Theodore Tso <tytso@....edu>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: [PATCH, RFC] Add more intelligent handling of the mke2fs.conf
	installation process


在 2008-07-16三的 13:52 -0400，Theodore Tso写道：
> On Wed, Jul 16, 2008 at 10:02:00AM -0700, Mingming Cao wrote:
> > I looked at misc/Makefile, it seems if the system already
> > have /etc/mke2fs.conf, it will not get updated. This is reasonable for
> > ext3.   But not good for ext4.
> 
> Good point.  The following patch won't do anything for people building
> RPM or dpkg packages (which have their own automatic configuration
> file handling); this will provide a poor person's config handling
> machinery for people building e2fsprogs and the installing on their
> own local system.
> 

Thanks Ted, 

I verified it works great.

Mingming
> 						- Ted
> 
> From f8e42224f8cc77afd2b2372dc527428072e28519 Mon Sep 17 00:00:00 2001
> From: Theodore Ts'o <tytso@....edu>
> Date: Wed, 16 Jul 2008 13:39:32 -0400
> Subject: [PATCH] Add more intelligent handling of the mke2fs.conf installation process
> 
> For people who are compiling mke2fs for their own use outside of a
> package manager, we need to make sure the system /etc/mke2fs.conf is
> sufficiently up-to-date that it won't cause problems, but at the same
> time we don't want to blow away any user-specific customizations.
> 
> So if /etc/mk2fs.conf exists, but does not mention ext4dev, we will
> move it aside to /etc/mke2fs.conf.e2fsprogs-old and then install the
> new mke2fs.conf.  If the /etc/mke2fs.conf file exists but does mention
> ext4dev, we install the new mke2fs.conf file as
> /etc/mke2fs.conf.e2fsprogs-new.  In both we print warning to the user
> so they can manually make any changes as needed.
> 
> Signed-off-by: "Theodore Ts'o" <tytso@....edu>
> ---
>  misc/Makefile.in |   25 ++++++++++++++++++++++++-
>  1 files changed, 24 insertions(+), 1 deletions(-)
> 
> diff --git a/misc/Makefile.in b/misc/Makefile.in
> index a8d1018..a81df8a 100644
> --- a/misc/Makefile.in
> +++ b/misc/Makefile.in
> @@ -343,7 +343,30 @@ install: all $(SMANPAGES) $(UMANPAGES) installdirs
>  		echo "	INSTALL_DATA $(man5dir)/$$i"; \
>  		$(INSTALL_DATA) $$i $(DESTDIR)$(man5dir)/$$i; \
>  	done
> -	@if ! test -f $(DESTDIR)$(root_sysconfdir)/mke2fs.conf; then \
> +	@if test -f $(DESTDIR)$(root_sysconfdir)/mke2fs.conf; then \
> +		if cmp -s $(DESTDIR)$(root_sysconfdir)/mke2fs.conf \
> +			$(srcdir)/mke2fs.conf; then \
> +			true; \
> +		else \
> +			if grep -q ext4dev $(DESTDIR)$(root_sysconfdir)/mke2fs.conf ; then \
> +				echo "	INSTALL_DATA $(root_sysconfdir)/mke2fs.conf.e2fsprogs-new"; \
> +				$(INSTALL_DATA) $(srcdir)/mke2fs.conf \
> +					$(DESTDIR)$(root_sysconfdir)/mke2fs.conf.e2fsprogs-new; \
> +				echo "Warning: installing mke2fs.conf in $(DESTDIR)$(root_sysconfdir)/mke2fs.conf.e2fsprogs-new"; \
> +				echo "Check to see if you need to update your $(root_sysconfdir)/mke2fs.conf"; \
> +			else \
> +				echo "	INSTALL_DATA $(root_sysconfdir)/mke2fs.conf"; \
> +				mv $(DESTDIR)$(root_sysconfdir)/mke2fs.conf \
> +				   $(DESTDIR)$(root_sysconfdir)/mke2fs.conf.e2fsprogs-old; \
> +				$(INSTALL_DATA) $(srcdir)/mke2fs.conf \
> +					$(DESTDIR)$(root_sysconfdir)/mke2fs.conf; \
> +				echo "Your mke2fs.conf is too old.  Backing up old version in"; \
> +				echo "$(DESTDIR)$(root_sysconfdir)/mke2fs.conf.e2fsprogs-old.  Please check to see"; \
> +				echo "if you have any local customizations that you wish to preserve."; \
> +			fi; \
> +			echo " "; \
> +		fi; \
> +	else \
>  		echo "	INSTALL_DATA $(root_sysconfdir)/mke2fs.conf"; \
>  		$(INSTALL_DATA) $(srcdir)/mke2fs.conf \
>  			$(DESTDIR)$(root_sysconfdir)/mke2fs.conf; \

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