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authorDavid Howells <dhowells@redhat.com>2012-05-21 12:32:13 +0100
committerJames Morris <james.l.morris@oracle.com>2012-05-25 20:51:42 +1000
commit423b9788023263364ea5de04189f02bd9b6a12db (patch)
treefc3ee4814aa8322fb2abb01c50d96568aa51bd9b /security/keys/keyring.c
parentMerge branch 'master' of git://git.infradead.org/users/eparis/selinux into next (diff)
downloadlinux-dev-423b9788023263364ea5de04189f02bd9b6a12db.tar.xz
linux-dev-423b9788023263364ea5de04189f02bd9b6a12db.zip
KEYS: Fix some sparse warnings
Fix some sparse warnings in the keyrings code: (1) compat_keyctl_instantiate_key_iov() should be static. (2) There were a couple of places where a pointer was being compared against integer 0 rather than NULL. (3) keyctl_instantiate_key_common() should not take a __user-labelled iovec pointer as the caller must have copied the iovec to kernel space. (4) __key_link_begin() takes and __key_link_end() releases keyring_serialise_link_sem under some circumstances and so this should be declared. Note that adding __acquires() and __releases() for this doesn't help cure the warnings messages - something only commenting out both helps. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: James Morris <james.l.morris@oracle.com>
Diffstat (limited to '')
-rw-r--r--security/keys/keyring.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/security/keys/keyring.c b/security/keys/keyring.c
index 7445875f6818..81e7852d281d 100644
--- a/security/keys/keyring.c
+++ b/security/keys/keyring.c
@@ -751,6 +751,7 @@ static void keyring_unlink_rcu_disposal(struct rcu_head *rcu)
int __key_link_begin(struct key *keyring, const struct key_type *type,
const char *description, unsigned long *_prealloc)
__acquires(&keyring->sem)
+ __acquires(&keyring_serialise_link_sem)
{
struct keyring_list *klist, *nklist;
unsigned long prealloc;
@@ -960,6 +961,7 @@ void __key_link(struct key *keyring, struct key *key,
void __key_link_end(struct key *keyring, struct key_type *type,
unsigned long prealloc)
__releases(&keyring->sem)
+ __releases(&keyring_serialise_link_sem)
{
BUG_ON(type == NULL);
BUG_ON(type->name == NULL);