Messages in this thread | | | Subject | Re: [PATCH #3] reiserfs: Fix permissions on .reiserfs_priv | From | Matt McCutchen <> | Date | Thu, 08 Apr 2010 18:39:27 -0400 |
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On Thu, 2010-04-08 at 23:38 +0200, Edward Shishkin wrote: > Jeff Mahoney wrote: > > [...] This patch resolves the issue by properly hiding .reiserfs_priv. This > > was the intent of the xattr poisoning code, but it appears to have > > never worked as expected. This is fixed by using d_revalidate instead > > of d_compare. [...]
The patch seems to rely on the fact that the priv_root dentry is stuck in the dcache for as long as the filesystem is mounted, so that attempts to follow ".reiserfs_priv" are guaranteed to match that dentry in the cache and be refused by xattr_hide_revalidate. Is my understanding correct?
-- Matt
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