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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | LINKING | SEE ALSO | COLOPHON |
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KEYCTL_S...O_PARENT(3) Linux Key Management Calls KEYCTL_S...O_PARENT(3)
keyctl_session_to_parent - set the parent process's session
keyring
#include <keyutils.h>
long keyctl_session_to_parent();
keyctl_session_to_parent() changes the session keyring to which
the calling process's parent subscribes to be the that of the
calling process.
The keyring must have link permission available to the calling
process, the parent process must have the same UIDs/GIDs as the
calling process, and the LSM must not reject the replacement.
Furthermore, this may not be used to affect init or a kernel
thread.
Note that the replacement will not take immediate effect upon the
parent process, but will rather be deferred to the next time it
returns to userspace from kernel space.
On success keyctl_session_to_parent() returns 0. On error, the
value -1 will be returned and errno will have been set to an
appropriate error.
ENOMEM Insufficient memory to create a key.
EPERM The credentials of the parent don't match those of the
caller.
EACCES The named keyring exists, but is not linkable by the
calling process.
This is a library function that can be found in libkeyutils. When
linking, -lkeyutils should be specified to the linker.
keyctl(1), add_key(2), keyctl(2), request_key(2), keyctl(3),
keyrings(7), keyutils(7), session-keyring(7),
user-session-keyring(7)
This page is part of the keyutils (key management utilities)
project. Information about the project can be found at [unknown
-- if you know, please contact [email protected]] If you have a
bug report for this manual page, send it to
[email protected]. This page was obtained from the project's
upstream Git repository
⟨http://git.kernel.org/pub/scm/linux/kernel/git/dhowells/keyutils.git⟩
on 2025-08-11. (At that time, the date of the most recent commit
that was found in the repository was 2023-03-20.) 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 [email protected]
Linux 20 Feb 2014 KEYCTL_S...O_PARENT(3)
Pages that refer to this page: KEYCTL_SESSION_TO_PARENT(2const), keyctl(3), session-keyring(7)
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HTML rendering created 2025-09-06 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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