LXR qemu/include/hw/xen/xen-bus-helper.h

   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_backend_ops.h"
  12
  13const char *xs_strstate(enum xenbus_state state);
  14
  15void xs_node_create(struct qemu_xs_handle *h,  xs_transaction_t tid,
  16                    const char *node, unsigned int owner, unsigned int domid,
  17                    unsigned int perms, Error **errp);
  18void xs_node_destroy(struct qemu_xs_handle *h,  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 */
  22void xs_node_vprintf(struct qemu_xs_handle *h,  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);
  26void xs_node_printf(struct qemu_xs_handle *h,  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 */
  32int xs_node_vscanf(struct qemu_xs_handle *h,  xs_transaction_t tid,
  33                   const char *node, const char *key, Error **errp,
  34                   const char *fmt, va_list ap)
  35    G_GNUC_SCANF(6, 0);
  36int xs_node_scanf(struct qemu_xs_handle *h,  xs_transaction_t tid,
  37                  const char *node, const char *key, Error **errp,
  38                  const char *fmt, ...)
  39    G_GNUC_SCANF(6, 7);
  40
  41/* Watch node/key unless node is empty, in which case watch key */
  42struct qemu_xs_watch *xs_node_watch(struct qemu_xs_handle *h, const char *node,
  43                                    const char *key, xs_watch_fn fn,
  44                                    void *opaque, Error **errp);
  45void xs_node_unwatch(struct qemu_xs_handle *h, struct qemu_xs_watch *w);
  46
  47#endif /* HW_XEN_BUS_HELPER_H */
  48