Provided by: libkeyutils-dev_1.6.1-2ubuntu3_amd64 bug


       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)