On Thu, Oct 27, 2005 at 03:08:20PM +0800, Globe Trekker wrote: > I tried to get `dentry' from `inode' but found it almost impossible Indeed :-) > I tried to figure out the situations in which the `nd' > parameter for security_inode_permission() hook is NULL but found it too > hard to accomplish. Seths suggestion works (also, you can search for similar inside of cscope). To confirm scenarios you find above, you can always add something (in your hook) like: if (!nd) dump_stack(); Obviously, only for testing and assuming you don't have any frequent paths through your code where this is true. Last I looked, xattrs and files being accessed from nfsd were two significant cases. Tony
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