diff options
| author | David Howells <dhowells@redhat.com> | 2006-06-26 00:24:50 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-26 09:58:18 -0700 |
| commit | 7e047ef5fe2d52e83020e856b1bf2556a6a2ce98 (patch) | |
| tree | 97656e2c56a27be9d1da451dde627b693b8643f2 /include | |
| parent | f116629d03655adaf7832b93b03c99391d09d4a7 (diff) | |
[PATCH] keys: sort out key quota system
Add the ability for key creation to overrun the user's quota in some
circumstances - notably when a session keyring is created and assigned to a
process that didn't previously have one.
This means it's still possible to log in, should PAM require the creation of a
new session keyring, and fix an overburdened key quota.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/key.h | 13 | ||||
| -rw-r--r-- | include/linux/security.h | 11 |
2 files changed, 17 insertions, 7 deletions
diff --git a/include/linux/key.h b/include/linux/key.h index e81ebf910d0..e693e729bc9 100644 --- a/include/linux/key.h +++ b/include/linux/key.h @@ -248,7 +248,14 @@ extern struct key *key_alloc(struct key_type *type, const char *desc, uid_t uid, gid_t gid, struct task_struct *ctx, - key_perm_t perm, int not_in_quota); + key_perm_t perm, + unsigned long flags); + + +#define KEY_ALLOC_IN_QUOTA 0x0000 /* add to quota, reject if would overrun */ +#define KEY_ALLOC_QUOTA_OVERRUN 0x0001 /* add to quota, permit even if overrun */ +#define KEY_ALLOC_NOT_IN_QUOTA 0x0002 /* not in quota */ + extern int key_payload_reserve(struct key *key, size_t datalen); extern int key_instantiate_and_link(struct key *key, const void *data, @@ -285,7 +292,7 @@ extern key_ref_t key_create_or_update(key_ref_t keyring, const char *description, const void *payload, size_t plen, - int not_in_quota); + unsigned long flags); extern int key_update(key_ref_t key, const void *payload, @@ -299,7 +306,7 @@ extern int key_unlink(struct key *keyring, extern struct key *keyring_alloc(const char *description, uid_t uid, gid_t gid, struct task_struct *ctx, - int not_in_quota, + unsigned long flags, struct key *dest); extern int keyring_clear(struct key *keyring); diff --git a/include/linux/security.h b/include/linux/security.h index d2c17bd91a2..51805806f97 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -862,6 +862,7 @@ struct swap_info_struct; * Permit allocation of a key and assign security data. Note that key does * not have a serial number assigned at this point. * @key points to the key. + * @flags is the allocation flags * Return 0 if permission is granted, -ve error otherwise. * @key_free: * Notification of destruction; free security data. @@ -1324,7 +1325,7 @@ struct security_operations { /* key management security hooks */ #ifdef CONFIG_KEYS - int (*key_alloc)(struct key *key, struct task_struct *tsk); + int (*key_alloc)(struct key *key, struct task_struct *tsk, unsigned long flags); void (*key_free)(struct key *key); int (*key_permission)(key_ref_t key_ref, struct task_struct *context, @@ -3040,9 +3041,10 @@ static inline int security_xfrm_policy_lookup(struct xfrm_policy *xp, u32 sk_sid #ifdef CONFIG_KEYS #ifdef CONFIG_SECURITY static inline int security_key_alloc(struct key *key, - struct task_struct *tsk) + struct task_struct *tsk, + unsigned long flags) { - return security_ops->key_alloc(key, tsk); + return security_ops->key_alloc(key, tsk, flags); } static inline void security_key_free(struct key *key) @@ -3060,7 +3062,8 @@ static inline int security_key_permission(key_ref_t key_ref, #else static inline int security_key_alloc(struct key *key, - struct task_struct *tsk) + struct task_struct *tsk, + unsigned long flags) { return 0; } |