keyctl_join_session_keyring - Join a different session keyring
key_serial_t keyctl_join_session_keyring(const char *name);
() changes the session keyring to which a
process is subscribed.
then a new anonymous keyring will be created, and
the process will be subscribed to that.
points to a string, then if a keyring of that name is available,
the process will attempt to subscribe to that keyring, giving an error if that
is not permitted; otherwise a new keyring of that name is created and attached
as the session keyring.
To attach to an extant named keyring, the keyring must have search
permission available to the calling process.
On success keyctl_join_session_keyring
() returns the serial number of the
key it found or created. On error, the value -1
will be returned and
errno will have been set to an appropriate error.
- Insufficient memory to create a key.
- The key quota for this user would be exceeded by creating this key or
linking it to the keyring.
- The named keyring exists, but is not searchable by the calling
This is a library function that can be found in libkeyutils
should be specified to the linker.