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    SubjectRe: [TOMOYO #9 (2.6.27-rc7-mm1) 1/6] LSM adapter functions.
    Quoting Kentaro Takeda (
    > Serge E. Hallyn wrote:
    > > I suppose you could do something like define both _path and _inode,
    > > save away your result from the _path hook but always return 0, there,
    > > then if you'd saved off an error and you make it to the _inode hook,
    > > return the error there...
    > You mean do MAC checks in security_path_*() and return error code of
    > security_path_*() in security_inode_*()? Then, method for passing the
    > error code to security_inode_*() is a problem.
    > It was possible to store the error code into current->security->
    > something. But now, it is impossible to store the error code into
    > current->cred->security->something because current->cred is shared by
    > multiple processes. To solve this problem, we everytime need to copy
    > current->cred in security_path_*() and we need a new hook called just
    > after returning from vfs_* (like mnt_drop_write()) for clearing the
    > error code.
    > Or, another way is to pass the error code as a vfs_*() parameter.
    > What do you think these approaches?

    Just keep your own hash table.


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