keyctl_session_to_parent(3) — Linux manual page



NAME         top

       keyctl_session_to_parent - set the parent process's session keyring

SYNOPSIS         top

       #include <keyutils.h>

       long keyctl_session_to_parent();

DESCRIPTION         top

       keyctl_session_to_parent() changes the session keyring to which the
       calling process's parent subscribes to be the that of the calling

       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.

RETURN VALUE         top

       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

ERRORS         top

       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

LINKING         top

       This is a library function that can be found in libkeyutils.  When
       linking, -lkeyutils should be specified to the linker.

SEE ALSO         top

       keyctl(1), add_key(2), keyctl(2), request_key(2), keyctl(3),
       keyrings(7), keyutils(7), session-keyring(7), user-session-keyring(7)

COLOPHON         top

       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] If you have a bug report for
       this manual page, send it to  This page was
       obtained from the project's upstream Git repository
       on 2020-11-01.  (At that time, the date of the most recent commit
       that was found in the repository was 2020-07-07.)  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

Linux                            20 Feb 2014     KEYCTL_SESSION_TO_PARENT(3)

Pages that refer to this page: keyctl(2)keyctl(3)session-keyring(7)