[PATCH 3/3] Documentation: keys: document IDs added since KEY_SPEC_REQKEY_AUTH_KEY

[Andrew Halaney]

The table of special key IDs stops at KEY_SPEC_REQKEY_AUTH_KEY.
Fill in all the new ones.

Suggested-by: Christian Brauner (Amutable) <brauner at kernel.org>
Signed-off-by: Andrew Halaney <andrew at amutable.com>
---
 Documentation/security/keys/core.rst | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Documentation/security/keys/core.rst b/Documentation/security/keys/core.rst
index 326b8a973828..37ed42382f16 100644
--- a/Documentation/security/keys/core.rst
+++ b/Documentation/security/keys/core.rst
@@ -372,6 +372,19 @@ process making the call::
 	KEY_SPEC_GROUP_KEYRING		-6	GID-specific keyring
 	KEY_SPEC_REQKEY_AUTH_KEY	-7	assumed request_key()
 						  authorisation key
+	KEY_SPEC_REQUESTOR_KEYRING	-8	request_key() destination
+						  keyring
+
+There are also values that refer to a specific kernel keyring rather than to
+anything belonging to the caller.  These keyrings are not linked into any
+keyring, so a search cannot reach them and the ID is the only way to name
+one::
+
+	CONSTANT			VALUE	KEY REFERENCED
+	==============================	======	===========================
+	KEY_SPEC_BPF_KEYRING		-9	the ".bpf" keyring
+	KEY_SPEC_DM_VERITY_KEYRING	-10	the ".dm-verity" keyring
+	KEY_SPEC_FS_VERITY_KEYRING	-11	the ".fs-verity" keyring
 
 
 The main syscalls are:

-- 
2.55.0