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From: Richard Purdie <richard.purdie@linuxfoundation.org>
To: Patches and discussions about the oe-core layer
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Date: Tue, 11 Oct 2011 11:59:45 +0100
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Subject: Re: How to overlay files/fs-perms.txt?
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On Tue, 2011-10-11 at 12:42 +0200, Koen Kooi wrote:
> In angstrom we have base-files overlayed to clean out /var and files/fs-perms.txt is getting in the way of that:
> 
> koen@dominion:/OE/tentacle/sources/openembedded-core/meta$ grep localstate files/fs-perms.txt 
> ${localstatedir}/cache	link	volatile/cache
> ${localstatedir}/run	link	volatile/run
> ${localstatedir}/log	link	volatile/log
> ${localstatedir}/lock	link	volatile/lock
> ${localstatedir}/tmp	link	volatile/tmp
> 
> In angstrom those aren't symlinks anymore, but tmpfs bind mounts managed by systemd.
> 
> So, how doI overlay that file in this oe-core layer universe?

To quote package.bbclass:

	# Return a list of configuration files based on either the default
	# files/fs-perms.txt or the contents of FILESYSTEM_PERMS_TABLES
	# paths are resolved via BBPATH
	def get_fs_perms_list(d):
		str = ""
		fs_perms_tables = bb.data.getVar('FILESYSTEM_PERMS_TABLES', d, True)
		if not fs_perms_tables:
			fs_perms_tables = 'files/fs-perms.txt'
		for conf_file in fs_perms_tables.split():
			str += " %s" % bb.which(bb.data.getVar('BBPATH', d, True), conf_file)
		return str


so it looks for a "files/fs-perms.txt" in BBPATH...

Cheers,

Richard