NAME

       keyctl_join_session_keyring - join a different session keyring

SYNOPSIS

       #include <keyutils.h>

       key_serial_t keyctl_join_session_keyring(const char *name);

DESCRIPTION

       keyctl_join_session_keyring()   changes   the  session  keyring  to  which  a  process  is
       subscribed.

       If name is NULL then a new anonymous keyring will be created,  and  the  process  will  be
       subscribed to that.

       If  name 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.

RETURN VALUE

       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.

ERRORS

       ENOMEM Insufficient memory to create a key.

       EDQUOT The key quota for this user would be exceeded by creating this key or linking it to
              the keyring.

       EACCES The named keyring exists, but is not searchable by the calling process.

LINKING

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

SEE ALSO

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