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#ifndef CAP_MAJOR
#define CAP_MAJOR 0
#endif
#ifndef CAP_NR_DEVS
#define CAP_NR_DEVS 2 /* caphash and capuse */
#endif
#ifndef CAP_NODE_SIZE
#define CAP_NODE_SIZE 20
#endif
#define MAX_DIGEST_SIZE 20
struct cap_node {
char data[CAP_NODE_SIZE];
struct list_head list;
};
struct cap_dev {
struct cap_node *head;
int node_size;
unsigned long size;
struct semaphore sem;
struct cdev cdev;
};
extern int cap_major;
extern int cap_nr_devs;
extern int cap_node_size;
int cap_trim(struct cap_dev *);
ssize_t cap_write(struct file *, const char __user *, size_t, loff_t *);
char *cap_hash(char *plain_text, unsigned int plain_text_size, char *key, unsigned int key_size);
void hex_dump(unsigned char * buf, unsigned int len);
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