From 4e58c37e7d905d83140c79a83c89cad01f887ea2 Mon Sep 17 00:00:00 2001 From: Chris Larson Date: Mon, 19 Apr 2010 11:20:37 -0700 Subject: Add initial signature.bbclass, which generates a hash of the recipe data If the datastore has a 'hash' method, it will use that, otherwise it uses its own implementation. Datastore hashing will be added to bitbake master at some point, to prepare for the move away from stamps. Signed-off-by: Chris Larson --- classes/signature.bbclass | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 classes/signature.bbclass (limited to 'classes') diff --git a/classes/signature.bbclass b/classes/signature.bbclass new file mode 100644 index 0000000000..17f7f6c59d --- /dev/null +++ b/classes/signature.bbclass @@ -0,0 +1,29 @@ +# Generate a signature / hash from the metadata +# +# Using a blacklist rather than a whitelist is safest, at least if you're +# utilizing the signature in your pstage package filenames, as the failure +# mode for blacklist is an unnecessary rebuild from source, whereas the +# failure case for a whitelist is use of incorrect binaries. + +BB_HASH_BLACKLIST += "BUILDSTART DATE TIME DATETIME \ + __* *DIR \ + BB_*" + +def get_data_hash(d): + from fnmatch import fnmatchcase + + try: + signature = d.hash() + except AttributeError: + blacklist = (d.getVar("BB_HASH_BLACKLIST", True) or "").split() + items = ((key, repr(d.getVar(key, False))) + for key in d.keys() + if not any(fnmatchcase(key, pattern) for pattern in blacklist)) + signature = hash(frozenset(items)) + return str(signature) + +SIGNATURE = "${@get_data_hash(d.getVar('__RECIPEDATA', False) or d)}" + +python () { + d.setVar("__RECIPEDATA", d) +} -- cgit v1.2.3