sets the default destination for implicit key requests for the current thread
and returns the old setting.
After this operation has been issued, keys acquired by implicit key requests,
such as might be performed by open() on an AFS or NFS filesystem, will be
linked by default to the specified keyring by this function.
The valid values of
This makes no change to the current setting.
This makes the thread-specific keyring the default destination.
This makes the process-specific keyring the default destination.
This makes the session keyring the default destination.
This makes the UID-specific keyring the default destination.
This makes the UID-specific session keyring the default destination.
This selects the default behaviour which is to use the thread-specific keyring
if there is one, otherwise the process-specific keyring if there is one,
otherwise the session keyring if there is one, otherwise the UID-specific
This setting is inherited across
On error, the value
will be returned and errno will have been set to an appropriate error.
The value of
This is a library function that can be found in
should be specified to the linker.