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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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11
security/keys/internal.h
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@@ -176,20 +176,11 @@ extern int key_task_permission(const key_ref_t key_ref,
/*
* Check to see whether permission is granted to use a key in the desired way.
*/
static inline int key_permission(const key_ref_t key_ref, key_perm_t perm)
static inline int key_permission(const key_ref_t key_ref, unsigned perm)
{
return key_task_permission(key_ref, current_cred(), perm);
}
/* required permissions */
#define KEY_VIEW 0x01 /* require permission to view attributes */
#define KEY_READ 0x02 /* require permission to read content */
#define KEY_WRITE 0x04 /* require permission to update / modify */
#define KEY_SEARCH 0x08 /* require permission to search (keyring) or find (key) */
#define KEY_LINK 0x10 /* require permission to link */
#define KEY_SETATTR 0x20 /* require permission to change attributes */
#define KEY_ALL 0x3f /* all the above permissions */
/*
* Authorisation record for request_key().
*/