keyctl_set_reqkey_keyring()
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
reqkey_defl
are:
KEY_REQKEY_DEFL_NO_CHANGE
This makes no change to the current setting.
KEY_REQKEY_DEFL_THREAD_KEYRING
This makes the thread-specific keyring the default destination.
KEY_REQKEY_DEFL_PROCESS_KEYRING
This makes the process-specific keyring the default destination.
KEY_REQKEY_DEFL_SESSION_KEYRING
This makes the session keyring the default destination.
KEY_REQKEY_DEFL_USER_KEYRING
This makes the UID-specific keyring the default destination.
KEY_REQKEY_DEFL_USER_SESSION_KEYRING
This makes the UID-specific session keyring the default destination.
KEY_REQKEY_DEFL_DEFAULT
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
session keyring.
This setting is inherited across
fork()
and
exec().
RETURN VALUE
On success
keyctl_set_reqkey_keyring()
returns
0.
On error, the value
-1
will be returned and errno will have been set to an appropriate error.
ERRORS
EINVAL
The value of
reqkey_defl
is invalid.
LINKING
This is a library function that can be found in
libkeyutils.
When linking,
-lkeyutils
should be specified to the linker.
