1 /* 2 * Copyright (c) 2018 Citrix Systems Inc. 3 * 4 * This work is licensed under the terms of the GNU GPL, version 2 or later. 5 * See the COPYING file in the top-level directory. 6 */ 7 8 #ifndef HW_XEN_BUS_HELPER_H 9 #define HW_XEN_BUS_HELPER_H 10 11 #include "hw/xen/xen_common.h" 12 13 const char *xs_strstate(enum xenbus_state state); 14 15 void xs_node_create(struct xs_handle *xsh, xs_transaction_t tid, 16 const char *node, struct xs_permissions perms[], 17 unsigned int nr_perms, Error **errp); 18 void xs_node_destroy(struct xs_handle *xsh, xs_transaction_t tid, 19 const char *node, Error **errp); 20 21 /* Write to node/key unless node is empty, in which case write to key */ 22 void xs_node_vprintf(struct xs_handle *xsh, xs_transaction_t tid, 23 const char *node, const char *key, Error **errp, 24 const char *fmt, va_list ap) 25 G_GNUC_PRINTF(6, 0); 26 void xs_node_printf(struct xs_handle *xsh, xs_transaction_t tid, 27 const char *node, const char *key, Error **errp, 28 const char *fmt, ...) 29 G_GNUC_PRINTF(6, 7); 30 31 /* Read from node/key unless node is empty, in which case read from key */ 32 int xs_node_vscanf(struct xs_handle *xsh, xs_transaction_t tid, 33 const char *node, const char *key, Error **errp, 34 const char *fmt, va_list ap); 35 int xs_node_scanf(struct xs_handle *xsh, xs_transaction_t tid, 36 const char *node, const char *key, Error **errp, 37 const char *fmt, ...); 38 39 /* Watch node/key unless node is empty, in which case watch key */ 40 void xs_node_watch(struct xs_handle *xsh, const char *node, const char *key, 41 char *token, Error **errp); 42 void xs_node_unwatch(struct xs_handle *xsh, const char *node, const char *key, 43 const char *token, Error **errp); 44 45 #endif /* HW_XEN_BUS_HELPER_H */ 46