thread-keyring

       The  thread  keyring  is  a  keyring used to anchor keys on behalf of a
       process.  It is only created when a thread requests it.

       A special serial number value, KEY_SPEC_THREAD_KEYRING, is defined that
       can  be  used  in  lieu of the calling thread's thread keyring's actual
       serial number.

       From the keyctl utility, '@t' can be used instead of a numeric  key  ID
       in  much  the  same  way, but as keyctl is a program run after forking,
       this is of no utility.

       Thread keyrings are not inherited across clone()  and  are  cleared  by
       execve().  A thread keyring is destroyed when the thread that refers to
       it exits.

       If a thread doesn't have a thread keyring when it is accessed, then the
       thread keyring will be created if the keyring is to be modified, other-
       wise error ENOKEY will be issued.

SEE ALSO
       keyctl(1),
       keyctl(3),
       keyrings(7),
       process-keyring(7),
       session-keyring(7),
       user-keyring(7),
       user-session-keyring(7)
       persistent-keyring(7)

Linux                             20 Feb 2014                THREAD-KEYRING(7)
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