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/*
* Copyright (c) 2018 Citrix Systems Inc.
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#ifndef HW_XEN_BUS_HELPER_H
#define HW_XEN_BUS_HELPER_H
#include "hw/xen/xen_backend_ops.h"
const char *xs_strstate(enum xenbus_state state);
void xs_node_create(struct qemu_xs_handle *h, xs_transaction_t tid,
const char *node, unsigned int owner, unsigned int domid,
unsigned int perms, Error **errp);
void xs_node_destroy(struct qemu_xs_handle *h, xs_transaction_t tid,
const char *node, Error **errp);
/* Write to node/key unless node is empty, in which case write to key */
void xs_node_vprintf(struct qemu_xs_handle *h, xs_transaction_t tid,
const char *node, const char *key, Error **errp,
const char *fmt, va_list ap)
G_GNUC_PRINTF(6, 0);
void xs_node_printf(struct qemu_xs_handle *h, xs_transaction_t tid,
const char *node, const char *key, Error **errp,
const char *fmt, ...)
G_GNUC_PRINTF(6, 7);
/* Read from node/key unless node is empty, in which case read from key */
int xs_node_vscanf(struct qemu_xs_handle *h, xs_transaction_t tid,
const char *node, const char *key, Error **errp,
const char *fmt, va_list ap)
G_GNUC_SCANF(6, 0);
int xs_node_scanf(struct qemu_xs_handle *h, xs_transaction_t tid,
const char *node, const char *key, Error **errp,
const char *fmt, ...)
G_GNUC_SCANF(6, 7);
/*
* Unlike other functions here, the printf-formatted path_fmt is for
* the XenStore path, not the contents of the node.
*/
char *xs_node_read(struct qemu_xs_handle *h, xs_transaction_t tid,
unsigned int *len, Error **errp,
const char *path_fmt, ...)
G_GNUC_PRINTF(5, 6);
/* Watch node/key unless node is empty, in which case watch key */
struct qemu_xs_watch *xs_node_watch(struct qemu_xs_handle *h, const char *node,
const char *key, xs_watch_fn fn,
void *opaque, Error **errp);
void xs_node_unwatch(struct qemu_xs_handle *h, struct qemu_xs_watch *w);
#endif /* HW_XEN_BUS_HELPER_H */
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