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KEYS: Move the flags representing required permission to linux/key.h

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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>
This commit is contained in:
David Howells
2014-03-14 17:44:49 +00:00
parent c60f7d5a8e
commit f5895943d9
13 changed files with 53 additions and 51 deletions
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6
include/linux/security.h
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@@ -1707,7 +1707,7 @@ struct security_operations {
void (*key_free) (struct key *key);
int (*key_permission) (key_ref_t key_ref,
const struct cred *cred,
key_perm_t perm);
unsigned perm);
int (*key_getsecurity)(struct key *key, char **_buffer);
#endif /* CONFIG_KEYS */
@@ -3026,7 +3026,7 @@ static inline int security_path_chroot(struct path *path)
int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
void security_key_free(struct key *key);
int security_key_permission(key_ref_t key_ref,
const struct cred *cred, key_perm_t perm);
const struct cred *cred, unsigned perm);
int security_key_getsecurity(struct key *key, char **_buffer);
#else
@@ -3044,7 +3044,7 @@ static inline void security_key_free(struct key *key)
static inline int security_key_permission(key_ref_t key_ref,
const struct cred *cred,
key_perm_t perm)
unsigned perm)
{
return 0;
}