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https://github.com/xen-project/xen.git
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Wei Liu
16e92eb577
They are only used there, no need to expose them to other parts of libxl. This is necessary to make libxl build on FreeBSD again because FreeBSD doesn't have netlink. Signed-off-by: Wei Liu <wei.liu2@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
142 lines
5.0 KiB
C
142 lines
5.0 KiB
C
/*
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* Copyright (C) 2016 FUJITSU LIMITED
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* Author: Wen Congyang <wency@cn.fujitsu.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation; version 2.1 only. with the special
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* exception on linking described in file LICENSE.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*/
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#ifndef LIBXL_COLO_H
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#define LIBXL_COLO_H
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#include "libxl_internal.h"
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/* Maximum time(5s) to wait for colo proxy checkpoit */
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#define COLO_PROXY_CHECKPOINT_TIMEOUT 5000000
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#define ASYNC_CALL(egc, ao, child, param, func, callback) do { \
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int pid = -1; \
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STATE_AO_GC(ao); \
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\
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pid = libxl__ev_child_fork(gc, child, callback); \
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if (pid == -1) { \
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LOG(ERROR, "unable to fork"); \
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goto out; \
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} \
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\
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if (!pid) { \
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/* child */ \
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func(param); \
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/* notreached */ \
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abort(); \
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} \
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\
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return; \
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out: \
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callback(egc, child, -1, 1); \
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} while (0)
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enum {
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LIBXL_COLO_SETUPED,
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LIBXL_COLO_SUSPENDED,
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LIBXL_COLO_RESUMED,
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};
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struct libxl__colo_device_nic {
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int devid;
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const char *vif;
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};
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struct libxl__colo_qdisk {
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bool setuped;
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};
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struct libxl__colo_proxy_state {
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/* set by caller of colo_proxy_setup */
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struct libxl__ao *ao;
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int sock_fd;
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int index;
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};
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struct libxl__colo_save_state {
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int send_fd;
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int recv_fd;
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char *colo_proxy_script;
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/* private */
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libxl__stream_read_state srs;
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void (*callback)(libxl__egc *, libxl__colo_save_state *, int);
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bool svm_running;
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bool paused;
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/* private, used by qdisk block replication */
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bool qdisk_used;
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bool qdisk_setuped;
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/* private, used by colo-proxy */
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libxl__colo_proxy_state cps;
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libxl__ev_child child;
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};
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typedef void libxl__colo_callback(struct libxl__egc *egc,
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libxl__colo_restore_state *crs, int rc);
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struct libxl__colo_restore_state {
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/* must set by caller of libxl__colo_(setup|teardown) */
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struct libxl__ao *ao;
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uint32_t domid;
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int send_back_fd;
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int recv_fd;
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int hvm;
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libxl__colo_callback *callback;
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char *colo_proxy_script;
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/* private, colo restore checkpoint state */
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libxl__domain_create_cb *saved_cb;
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void *crcs;
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/* private, used by qdisk block replication */
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bool qdisk_used;
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bool qdisk_setuped;
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const char *host;
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const char *port;
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/* private, used by colo-proxy */
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libxl__colo_proxy_state cps;
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};
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int init_subkind_qdisk(struct libxl__checkpoint_devices_state *cds);
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void cleanup_subkind_qdisk(struct libxl__checkpoint_devices_state *cds);
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int init_subkind_colo_nic(struct libxl__checkpoint_devices_state *cds);
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void cleanup_subkind_colo_nic(struct libxl__checkpoint_devices_state *cds);
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extern void libxl__colo_restore_setup(struct libxl__egc *egc,
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libxl__colo_restore_state *crs);
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extern void libxl__colo_restore_teardown(struct libxl__egc *egc, void *dcs_void,
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int ret, int retval, int errnoval);
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extern void libxl__colo_save_setup(struct libxl__egc *egc,
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struct libxl__colo_save_state *css);
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extern void libxl__colo_save_teardown(struct libxl__egc *egc,
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struct libxl__colo_save_state *css,
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int rc);
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extern int colo_proxy_setup(libxl__colo_proxy_state *cps);
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extern void colo_proxy_teardown(libxl__colo_proxy_state *cps);
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extern void colo_proxy_preresume(libxl__colo_proxy_state *cps);
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extern void colo_proxy_postresume(libxl__colo_proxy_state *cps);
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extern int colo_proxy_checkpoint(libxl__colo_proxy_state *cps,
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unsigned int timeout_us);
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#endif
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