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authorMat Martineau <mathew.j.martineau@linux.intel.com>2016-08-30 21:33:13 +0300
committerMat Martineau <mathew.j.martineau@linux.intel.com>2017-04-03 20:24:56 +0300
commitaaf66c883813f0078e3dafe7d20d1461321ac14f (patch)
tree5198162cc55309f8653a0a333c2cbdffc64debad /include/linux/key.h
parent469ff8f7d46d75b36de68a0411a2ce80109ad00b (diff)
downloadlinux-aaf66c883813f0078e3dafe7d20d1461321ac14f.tar.xz
KEYS: Split role of the keyring pointer for keyring restrict functions
The first argument to the restrict_link_func_t functions was a keyring pointer. These functions are called by the key subsystem with this argument set to the destination keyring, but restrict_link_by_signature expects a pointer to the relevant trusted keyring. Restrict functions may need something other than a single struct key pointer to allow or reject key linkage, so the data used to make that decision (such as the trust keyring) is moved to a new, fourth argument. The first argument is now always the destination keyring. Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Diffstat (limited to 'include/linux/key.h')
-rw-r--r--include/linux/key.h8
1 files changed, 5 insertions, 3 deletions
diff --git a/include/linux/key.h b/include/linux/key.h
index 3bb327043869..c59d1008c4fc 100644
--- a/include/linux/key.h
+++ b/include/linux/key.h
@@ -127,9 +127,10 @@ static inline bool is_key_possessed(const key_ref_t key_ref)
return (unsigned long) key_ref & 1UL;
}
-typedef int (*key_restrict_link_func_t)(struct key *keyring,
+typedef int (*key_restrict_link_func_t)(struct key *dest_keyring,
const struct key_type *type,
- const union key_payload *payload);
+ const union key_payload *payload,
+ struct key *restriction_key);
/*****************************************************************************/
/*
@@ -309,7 +310,8 @@ extern struct key *keyring_alloc(const char *description, kuid_t uid, kgid_t gid
extern int restrict_link_reject(struct key *keyring,
const struct key_type *type,
- const union key_payload *payload);
+ const union key_payload *payload,
+ struct key *restriction_key);
extern int keyring_clear(struct key *keyring);