KEYS: Move the flags representing required permission to linux/key.h
Move the flags representing required permission to linux/key.h as the perm
parameter of security_key_permission() is in terms of them - and not the
permissions mask flags used in key->perm.
Whilst we're at it:
(1) Rename them to be KEY_NEED_xxx rather than KEY_xxx to avoid collisions
with symbols in uapi/linux/input.h.
(2) Don't use key_perm_t for a mask of required permissions, but rather limit
it to the permissions mask attached to the key and arguments related
directly to that.
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Dmitry Kasatkin <d.kasatkin@samsung.com>
diff --git a/include/linux/key.h b/include/linux/key.h
index 80d6774..cd0abb8 100644
--- a/include/linux/key.h
+++ b/include/linux/key.h
@@ -309,6 +309,17 @@
extern void key_set_timeout(struct key *, unsigned);
+/*
+ * The permissions required on a key that we're looking up.
+ */
+#define KEY_NEED_VIEW 0x01 /* Require permission to view attributes */
+#define KEY_NEED_READ 0x02 /* Require permission to read content */
+#define KEY_NEED_WRITE 0x04 /* Require permission to update / modify */
+#define KEY_NEED_SEARCH 0x08 /* Require permission to search (keyring) or find (key) */
+#define KEY_NEED_LINK 0x10 /* Require permission to link */
+#define KEY_NEED_SETATTR 0x20 /* Require permission to change attributes */
+#define KEY_NEED_ALL 0x3f /* All the above permissions */
+
/**
* key_is_instantiated - Determine if a key has been positively instantiated
* @key: The key to check.