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authorDavid Howells <dhowells@redhat.com>2013-09-24 10:35:16 +0100
committerDavid Howells <dhowells@redhat.com>2013-09-24 10:35:16 +0100
commitccc3e6d9c9aea07a0b60b2b0bfc5b05a704b66d5 (patch)
treed111175934b1454fa275fe056f8c6d320e504b01 /Documentation/security/keys.txt
parentKEYS: Search for auth-key by name rather than target key ID (diff)
downloadlinux-dev-ccc3e6d9c9aea07a0b60b2b0bfc5b05a704b66d5.tar.xz
linux-dev-ccc3e6d9c9aea07a0b60b2b0bfc5b05a704b66d5.zip
KEYS: Define a __key_get() wrapper to use rather than atomic_inc()
Define a __key_get() wrapper to use rather than atomic_inc() on the key usage count as this makes it easier to hook in refcount error debugging. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'Documentation/security/keys.txt')
-rw-r--r--Documentation/security/keys.txt13
1 files changed, 8 insertions, 5 deletions
diff --git a/Documentation/security/keys.txt b/Documentation/security/keys.txt
index 9ede67084f0b..a4c33f1a7c6d 100644
--- a/Documentation/security/keys.txt
+++ b/Documentation/security/keys.txt
@@ -960,14 +960,17 @@ payload contents" for more information.
the argument will not be parsed.
-(*) Extra references can be made to a key by calling the following function:
+(*) Extra references can be made to a key by calling one of the following
+ functions:
+ struct key *__key_get(struct key *key);
struct key *key_get(struct key *key);
- These need to be disposed of by calling key_put() when they've been
- finished with. The key pointer passed in will be returned. If the pointer
- is NULL or CONFIG_KEYS is not set then the key will not be dereferenced and
- no increment will take place.
+ Keys so references will need to be disposed of by calling key_put() when
+ they've been finished with. The key pointer passed in will be returned.
+
+ In the case of key_get(), if the pointer is NULL or CONFIG_KEYS is not set
+ then the key will not be dereferenced and no increment will take place.
(*) A key's serial number can be obtained by calling: