On Tue, 2012-12-11 at 13:09 -0500, Eric Paris wrote: > On Tue, Dec 11, 2012 at 12:55 PM, Linus Torvalds > <torva...@linux-foundation.org> wrote: > > > And your "pseudo-filesystems" argument is pretty stupid too, since WE > > ALREADY HAVE A FLAG FOR THAT! > > > > Guess where it is? Oh, it's in the place I already mentioned makes > > more sense. Look for S_PRIVATE in inode->i_flags, and IS_PRIVATE() in > > users. It's what the other security models already use to avoid > > bothering calling down to the security layers. The fact that the > > integrity layer bypasses the normal security layer in > > ima_file_check(), for example, is no excuse to then make up totally > > new flags. > > IS_PRIVATE() is not used by and darn well better not be used by, all > psuedo filesystems like procfs which IMA may want to ignore. LSMs > like to do control on them. I thought S_PRIVATE was really only used > by the anon_inode and reiserfs's really crazy ass internal inodes. I > could always be wrong.
I was actually wondering about the MS_NOSEC flag. It's currently being used by fuse, gfs2, ocfs2 and tmpfs. (Not sure about xfs.) Can someone explain what it is being used for? thanks, Mimi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
