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#ifndef NCR_INT_H
# define NCR_INT_H
#include "ncr.h"
#include <asm/atomic.h>
#include "cryptodev_int.h"
#include <ncr-pk.h>
#define KEY_DATA_MAX_SIZE 3*1024
#define err() printk(KERN_DEBUG"ncr: %s: %s: %d\n", __FILE__, __func__, __LINE__)
struct session_item_st {
struct list_head list;
ncr_algorithm_t algorithm;
ncr_crypto_op_t op;
/* contexts for various options.
* simpler to have them like that than
* in a union.
*/
struct cipher_data cipher;
struct ncr_pk_ctx pk;
struct hash_data hash;
struct key_item_st* key;
atomic_t refcnt;
ncr_session_t desc;
};
#define MAX_DATA_PAGES 64
struct data_item_st {
struct list_head list;
/* This object is not protected from concurrent access.
* I see no reason to allow concurrent writes (reads are
* not an issue).
*/
size_t data_size;
size_t max_data_size;
struct scatterlist _sg[MAX_DATA_PAGES]; /* do not access directly */
union {
uint8_t* kernel;
struct {
uint8_t* __user ptr;
struct page *pg[MAX_DATA_PAGES];
size_t pg_cnt;
atomic_t pg_used;
} user;
} data;
ncr_data_type_t type;
unsigned int flags;
atomic_t refcnt;
/* owner. The one charged with this */
uid_t uid;
pid_t pid;
ncr_data_t desc;
};
struct key_item_st {
struct list_head list;
/* This object is also not protected from concurrent access.
*/
ncr_key_type_t type;
unsigned int flags;
ncr_algorithm_t algorithm; /* valid for public/private keys */
uint8_t key_id[MAX_KEY_ID_SIZE];
size_t key_id_size;
union {
struct {
uint8_t data[NCR_CIPHER_MAX_KEY_LEN];
size_t size;
} secret;
union {
rsa_key rsa;
dsa_key dsa;
} pk;
} key;
atomic_t refcnt;
atomic_t writer;
/* owner. The one charged with this */
uid_t uid;
pid_t pid;
ncr_key_t desc;
};
struct list_sem_st {
struct list_head list;
struct semaphore sem;
};
/* all the data associated with the open descriptor
* are here.
*/
struct ncr_lists {
struct list_sem_st data;
struct list_sem_st key;
/* sessions */
struct list_sem_st sessions;
};
void* ncr_init_lists(void);
void ncr_deinit_lists(struct ncr_lists *lst);
int ncr_ioctl(struct ncr_lists*, struct file *filp,
unsigned int cmd, unsigned long arg);
int ncr_data_set(struct list_sem_st*, void __user* arg);
int ncr_data_get(struct list_sem_st*, void __user* arg);
int ncr_data_deinit(struct list_sem_st*, void __user* arg);
int ncr_data_init(struct list_sem_st*, void __user* arg);
void ncr_data_list_deinit(struct list_sem_st*);
struct data_item_st* ncr_data_item_get( struct list_sem_st* lst, ncr_data_t desc);
void _ncr_data_item_put( struct data_item_st* item);
int ncr_data_item_get_sg( struct data_item_st* item, struct scatterlist** sg,
unsigned int *sg_cnt, size_t *data_size, size_t* max_data_size, unsigned int data_flags, int write);
void ncr_data_item_put_sg( struct data_item_st* item);
int ncr_data_item_setd( struct data_item_st* item, const void* data, size_t data_size, unsigned int data_flags);
int ncr_data_item_getd( struct data_item_st* item, void* data, size_t data_size, unsigned int data_flags);
int ncr_key_init(struct list_sem_st*, void __user* arg);
int ncr_key_deinit(struct list_sem_st*, void __user* arg);
int ncr_key_export(struct list_sem_st* data_lst,
struct list_sem_st* key_lst,void __user* arg);
int ncr_key_import(struct list_sem_st* data_lst,
struct list_sem_st* key_lst,void __user* arg);
void ncr_key_list_deinit(struct list_sem_st* lst);
int ncr_key_generate(struct list_sem_st* data_lst, void __user* arg);
int ncr_key_info(struct list_sem_st*, void __user* arg);
int ncr_key_generate_pair(struct list_sem_st* lst, void __user* arg);
int ncr_key_derive(struct list_sem_st*, void __user* arg);
int ncr_key_get_public(struct list_sem_st* lst, void __user* arg);
int ncr_key_item_get_read(struct key_item_st**st, struct list_sem_st* lst,
ncr_key_t desc);
/* get key item for writing */
int ncr_key_item_get_write( struct key_item_st** st,
struct list_sem_st* lst, ncr_key_t desc);
void _ncr_key_item_put( struct key_item_st* item);
typedef enum {
LIMIT_TYPE_KEY,
LIMIT_TYPE_DATA
} limits_type_t;
void ncr_limits_remove(uid_t uid, pid_t pid, limits_type_t type);
int ncr_limits_add_and_check(uid_t uid, pid_t pid, limits_type_t type);
void ncr_limits_init(void);
void ncr_limits_deinit(void);
ncr_key_type_t ncr_algorithm_to_key_type(ncr_algorithm_t algo);
int ncr_key_wrap(struct list_sem_st* keys, struct list_sem_st* data, void __user* arg);
int ncr_key_unwrap(struct list_sem_st*, struct list_sem_st* data, void __user* arg);
int ncr_key_storage_wrap(struct list_sem_st* key_lst, struct list_sem_st* data_lst, void __user* arg);
int ncr_key_storage_unwrap(struct list_sem_st*, struct list_sem_st* data, void __user* arg);
/* sessions */
struct session_item_st* ncr_session_new(struct list_sem_st* lst);
void _ncr_sessions_item_put( struct session_item_st* item);
struct session_item_st* ncr_sessions_item_get( struct list_sem_st* lst, ncr_session_t desc);
void ncr_sessions_list_deinit(struct list_sem_st* lst);
int ncr_session_init(struct ncr_lists* lists, void __user* arg);
int ncr_session_update(struct ncr_lists* lists, void __user* arg);
int ncr_session_final(struct ncr_lists* lists, void __user* arg);
int ncr_session_once(struct ncr_lists* lists, void __user* arg);
/* master key */
extern struct key_item_st master_key;
void ncr_master_key_reset(void);
/* storage */
int key_from_storage_data(struct key_item_st* key, const void* data, size_t data_size);
int key_to_storage_data( uint8_t** data, size_t * data_size, const struct key_item_st *key);
/* misc helper macros */
inline static unsigned int key_flags_to_data(unsigned int key_flags)
{
unsigned int flags = 0;
if (key_flags & NCR_KEY_FLAG_EXPORTABLE)
flags |= NCR_DATA_FLAG_EXPORTABLE;
return flags;
}
inline static unsigned int data_flags_to_key(unsigned int data_flags)
{
unsigned int flags = 0;
if (data_flags & NCR_DATA_FLAG_EXPORTABLE)
flags |= NCR_KEY_FLAG_EXPORTABLE;
return flags;
}
const char* _ncr_algo_to_str(ncr_algorithm_t algo);
int _ncr_algo_digest_size(ncr_algorithm_t algo);
#endif
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