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/*
* Licensed Materials - Property of IBM
*
* trousers - An open source TCG Software Stack
*
* (C) Copyright International Business Machines Corp. 2004
*
*/
#ifndef _AUTH_MGR_H_
#define _AUTH_MGR_H_
struct auth_map
{
TSS_BOOL full;
TPM_AUTHHANDLE tpm_handle;
TCS_CONTEXT_HANDLE tcs_ctx;
BYTE *swap; /* These 'swap' variables manage blobs received from TPM_SaveAuthContext */
UINT32 swap_size;
};
/*
* it appears that there's no way to query a v1.1 TPM for the
* max number of simultaneous auth sessions. We'll make the
* default relatively large and let the TPM return
* TCPA_RESOURCES to tell us when we cross the line.
*/
#define TSS_DEFAULT_AUTH_TABLE_SIZE 16
#define TSS_DEFAULT_OVERFLOW_AUTHS 16
struct _auth_mgr
{
short max_auth_sessions;
short open_auth_sessions;
UINT32 sleeping_threads;
COND_VAR **overflow; /* queue of TCS contexts waiting for an auth session to become
* available */
unsigned int of_head, of_tail; /* head and tail of the overflow queue */
struct auth_map *auth_mapper; /* table of currently tracked auth sessions */
UINT32 auth_mapper_size, overflow_size;
} auth_mgr;
MUTEX_DECLARE_INIT(auth_mgr_lock);
TSS_RESULT TPM_SaveAuthContext(TPM_AUTHHANDLE, UINT32 *, BYTE **);
TSS_RESULT TPM_LoadAuthContext(UINT32, BYTE *, TPM_AUTHHANDLE *);
#endif
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