THREAD KEYRING(7) Kernel key management THREAD KEYRING(7)NAME
thread keyring - Per-thread keyring
DESCRIPTION
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 ALSOkeyctl(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)
