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NAME | DESCRIPTION | SEE ALSO | COLOPHON |
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thread-keyring(7) Miscellaneous Information Manual thread-keyring(7)
thread-keyring - per-thread keyring
The thread keyring is a keyring used to anchor keys on behalf of
a process. It is created only when a thread requests it. The
thread keyring has the name (description) _tid.
A special serial number value, KEY_SPEC_THREAD_KEYRING, is
defined that can be used in lieu of the actual serial number of
the calling thread's thread keyring.
From the keyctl(1) utility, '@t' can be used instead of a numeric
key ID in much the same way, but as keyctl(1) is a program run
after forking, this is of no utility.
Thread keyrings are not inherited across clone(2) and fork(2) and
are cleared by execve(2). A thread keyring is destroyed when the
thread that refers to it terminates.
Initially, a thread does not have a thread keyring. If a thread
doesn't have a thread keyring when it is accessed, then it will
be created if it is to be modified; otherwise the operation fails
with the error ENOKEY.
keyctl(1), keyctl(3), keyrings(7), persistent-keyring(7),
process-keyring(7), session-keyring(7), user-keyring(7),
user-session-keyring(7)
This page is part of the man-pages (Linux kernel and C library
user-space interface documentation) project. Information about
the project can be found at
⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report
for this manual page, see
⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
This page was obtained from the tarball man-pages-6.9.1.tar.gz
fetched from
⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
2024-06-26. If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-
to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not
part of the original manual page), send a mail to
man-pages@man7.org
Linux man-pages 6.9.1 2024-05-02 thread-keyring(7)
Pages that refer to this page: add_key(2), keyctl(2), request_key(2), keyrings(7), keyutils(7), persistent-keyring(7), process-keyring(7), session-keyring(7), user-keyring(7), user-session-keyring(7)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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