KEYS: Add an iovec version of KEYCTL_INSTANTIATE
Add a keyctl op (KEYCTL_INSTANTIATE_IOV) that is like KEYCTL_INSTANTIATE, but
takes an iovec array and concatenates the data in-kernel into one buffer.
Since the KEYCTL_INSTANTIATE copies the data anyway, this isn't too much of a
problem.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/keys/internal.h b/security/keys/internal.h
index 286c095..07a025f 100644
--- a/security/keys/internal.h
+++ b/security/keys/internal.h
@@ -215,6 +215,13 @@
size_t buflen);
extern long keyctl_session_to_parent(void);
extern long keyctl_reject_key(key_serial_t, unsigned, unsigned, key_serial_t);
+extern long keyctl_instantiate_key_iov(key_serial_t,
+ const struct iovec __user *,
+ unsigned, key_serial_t);
+
+extern long keyctl_instantiate_key_common(key_serial_t,
+ const struct iovec __user *,
+ unsigned, size_t, key_serial_t);
/*
* Debugging key validation