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Jeffrey Mahoney wrote:
> This patch adds an S_PRIVATE flag to inode->i_flags to mark an inode as
> filesystem-internal. As such, it should be excepted from the security
> infrastructure to allow the filesystem to perform its own access control.
> @@ -1459,12 +1469,16 @@ static inline void security_inode_post_l
> struct inode *dir,
> struct dentry *new_dentry)
> {
> + if (unlikely (IS_PRIVATE (new_dentry->d_inode)))
> + return;
> security_ops->inode_post_link (old_dentry, dir, new_dentry);
> }
>
Internal testing has shown that this operation will cause an Oops on
NFS. The assumption that a link operation will return an instantiated
dentry is invalid, and thus new_dentry->d_inode will be NULL on NFS
filesystems. I'll send out a revised version later this evening.
- -Jeff
- --
Jeff Mahoney
SuSE Labs
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