diff options
Diffstat (limited to 'security')
| -rw-r--r-- | security/keys/internal.h | 31 | ||||
| -rw-r--r-- | security/keys/keyring.c | 1 | ||||
| -rw-r--r-- | security/keys/request_key.c | 2 |
3 files changed, 33 insertions, 1 deletions
diff --git a/security/keys/internal.h b/security/keys/internal.h index b39f5c2e2c4..a60c68138b4 100644 --- a/security/keys/internal.h +++ b/security/keys/internal.h @@ -13,7 +13,6 @@ #define _INTERNAL_H #include <linux/key-type.h> -#include <linux/key-ui.h> static inline __attribute__((format(printf, 1, 2))) void no_printk(const char *fmt, ...) @@ -82,6 +81,9 @@ extern struct mutex key_construction_mutex; extern wait_queue_head_t request_key_conswq; +extern struct key_type *key_type_lookup(const char *type); +extern void key_type_put(struct key_type *ktype); + extern int __key_link(struct key *keyring, struct key *key); extern key_ref_t __keyring_search_one(key_ref_t keyring_ref, @@ -118,6 +120,33 @@ extern struct key *request_key_and_link(struct key_type *type, struct key *dest_keyring, unsigned long flags); +extern key_ref_t lookup_user_key(struct task_struct *context, + key_serial_t id, int create, int partial, + key_perm_t perm); + +extern long join_session_keyring(const char *name); + +/* + * check to see whether permission is granted to use a key in the desired way + */ +extern int key_task_permission(const key_ref_t key_ref, + struct task_struct *context, + key_perm_t perm); + +static inline int key_permission(const key_ref_t key_ref, key_perm_t perm) +{ + return key_task_permission(key_ref, current, 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 */ + /* * request_key authorisation */ diff --git a/security/keys/keyring.c b/security/keys/keyring.c index a9ab8affc09..fdf75f90199 100644 --- a/security/keys/keyring.c +++ b/security/keys/keyring.c @@ -16,6 +16,7 @@ #include <linux/security.h> #include <linux/seq_file.h> #include <linux/err.h> +#include <keys/keyring-type.h> #include <asm/uaccess.h> #include "internal.h" diff --git a/security/keys/request_key.c b/security/keys/request_key.c index a8ebc9520ca..91953c81449 100644 --- a/security/keys/request_key.c +++ b/security/keys/request_key.c @@ -19,6 +19,8 @@ #include <linux/slab.h> #include "internal.h" +#define key_negative_timeout 60 /* default timeout on a negative key's existence */ + /* * wait_on_bit() sleep function for uninterruptible waiting */ |