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 sys_open on an AFS or NFS filesystem, will be linked by default to the specified keyring by this function.

Arguments

ecx Destination. I t may be one of the following values:

KEY_REQKEY_DEFL_NO_CHANGE This makes no change to the current setting.
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 execve().
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_GROUP_KEYRING This makes the GID-specific keyring the default destination.

Return values

If the system call succeeds the return value is the old setting.
If the system call fails the return value is -EINVAL denoting that he value of ecx is invalid.

Remarks

n/a