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/*
* Copyright (C) 2006 Samuel Thibault <samuel.thibault@ens-lyon.org>
*
* This program is free software ; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation ; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with the program ; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef XEN_STORE_H
#define XEN_STORE_H
#include <machine/xen.h>
#include <xen/public/io/xenbus.h>
typedef unsigned32_t hyp_store_transaction_t;
#define hyp_store_state_unknown "0"
#define hyp_store_state_initializing "1"
#define hyp_store_state_init_wait "2"
#define hyp_store_state_initialized "3"
#define hyp_store_state_connected "4"
#define hyp_store_state_closing "5"
#define hyp_store_state_closed "6"
void hyp_store_init(void);
extern const char *hyp_store_error;
/* Start a transaction. */
hyp_store_transaction_t hyp_store_transaction_start(void);
/* Stop a transaction. Returns 1 if the transactions succeeded, 0 else. */
int hyp_store_transaction_stop(hyp_store_transaction_t t);
/* List a directory: returns an array to file names, terminated by NULL. Free
* with kfree. */
char **hyp_store_ls(hyp_store_transaction_t t, int n, ...);
/* Get the value of an entry. Free with kfree. */
void *hyp_store_read(hyp_store_transaction_t t, int n, ...);
/* Get the integer value of an entry, -1 on error. */
int hyp_store_read_int(hyp_store_transaction_t t, int n, ...);
/* Set the value of an entry. */
char *hyp_store_write(hyp_store_transaction_t t, const char *data, int n, ...);
#endif /* XEN_STORE_H */
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