Commit 037c3431 authored Aug 24, 2023 by Hannes Reinecke Committed by Keith Busch Oct 11, 2023

security/keys: export key_lookup()



For in-kernel consumers one cannot readily assign a user (eg when
running from a workqueue), so the normal key search permissions
cannot be applied.
This patch exports the 'key_lookup()' function for a simple lookup
of keys without checking for permissions.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>

parent 501cc6f4

include/linux/key.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -515,6 +515,7 @@ extern void key_init(void);
		#define key_init() do { } while(0)
		#define key_free_user_ns(ns) do { } while(0)
		#define key_remove_domain(d) do { } while(0)
		#define key_lookup(k) NULL

		#endif /* CONFIG_KEYS */
		#endif /* __KERNEL__ */

security/keys/key.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -693,6 +693,7 @@ struct key *key_lookup(key_serial_t id)
		spin_unlock(&key_serial_lock);
		return key;
		}
		EXPORT_SYMBOL(key_lookup);

		/*
		* Find and lock the specified key type against removal.