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long keyctl_set_reqkey_keyring(int reqkey_defl);
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
The valid values of reqkey_defl are:
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 destina-
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().
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
EINVAL The value of reqkey_defl is invalid.
Linux 4 May 2006 KEYCTL_SET_REQKEY_KEYRING(3)