diff options
Diffstat (limited to 'xen/store.h')
-rw-r--r-- | xen/store.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/xen/store.h b/xen/store.h new file mode 100644 index 00000000..4b3ee187 --- /dev/null +++ b/xen/store.h @@ -0,0 +1,54 @@ +/* + * 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 */ |