tree b174a785efcfb9f752da096cd31593da96b2603d
parent 20ee451f5a7cd43edda56ba36cbec4d881d3329f
author Dmitry Kasatkin <d.kasatkin@samsung.com> 1384378959 +0200
committer Mimi Zohar <zohar@linux.vnet.ibm.com> 1394212544 -0500

ima: fix erroneous removal of security.ima xattr

ima_inode_post_setattr() calls ima_must_appraise() to check if the
file needs to be appraised. If it does not then it removes security.ima
xattr. With original policy matching code it might happen that even
file needs to be appraised with FILE_CHECK hook, it might not be
for POST_SETATTR hook. 'security.ima' might be erronously removed.

This patch treats POST_SETATTR as special wildcard function and will
cause ima_must_appraise() to be true if any of the hooks rules matches.
security.ima will not be removed if any of the hooks would require
appraisal.

Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>