2 * Copyright (C) 2014 Citrix Systems UK Ltd.
4 * This work is licensed under the terms of the GNU GPL, version 2. See
5 * the COPYING file in the top-level directory.
7 * Contributions after 2012-01-13 are licensed under the terms of the
8 * GNU GPL, version 2 or (at your option) any later version.
11 #include "hw/xen/xen_backend.h"
12 #include "qmp-commands.h"
13 #include "sysemu/char.h"
14 #include "sysemu/accel.h"
19 #define DPRINTF(fmt, ...) \
20 do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0)
22 #define DPRINTF(fmt, ...) \
26 static int store_dev_info(int domid, CharDriverState *cs, const char *string)
28 struct xs_handle *xs = NULL;
34 /* Only continue if we're talking to a pty. */
35 if (strncmp(cs->filename, "pty:", 4)) {
38 pts = cs->filename + 4;
40 /* We now have everything we need to set the xenstore entry. */
43 fprintf(stderr, "Could not contact XenStore\n");
47 path = xs_get_domain_path(xs, domid);
49 fprintf(stderr, "xs_get_domain_path() error\n");
52 newpath = realloc(path, (strlen(path) + strlen(string) +
54 if (newpath == NULL) {
55 fprintf(stderr, "realloc error\n");
62 if (!xs_write(xs, XBT_NULL, path, pts, strlen(pts))) {
63 fprintf(stderr, "xs_write for '%s' fail", string);
75 void xenstore_store_pv_console_info(int i, CharDriverState *chr)
78 store_dev_info(xen_domid, chr, "/console");
81 snprintf(buf, sizeof(buf), "/device/console/%d", i);
82 store_dev_info(xen_domid, chr, buf);
87 static void xenstore_record_dm_state(struct xs_handle *xs, const char *state)
92 fprintf(stderr, "xenstore connection not initialized\n");
96 snprintf(path, sizeof (path), "device-model/%u/state", xen_domid);
97 if (!xs_write(xs, XBT_NULL, path, state, strlen(state))) {
98 fprintf(stderr, "error recording dm state\n");
104 static void xen_change_state_handler(void *opaque, int running,
108 /* record state running */
109 xenstore_record_dm_state(xenstore, "running");
113 static int xen_init(MachineState *ms)
115 xen_xc = xen_xc_interface_open(0, 0, 0);
116 if (xen_xc == XC_HANDLER_INITIAL_VALUE) {
117 xen_be_printf(NULL, 0, "can't open xen interface\n");
120 qemu_add_vm_change_state_handler(xen_change_state_handler, NULL);
125 static void xen_accel_class_init(ObjectClass *oc, void *data)
127 AccelClass *ac = ACCEL_CLASS(oc);
129 ac->init_machine = xen_init;
130 ac->allowed = &xen_allowed;
133 #define TYPE_XEN_ACCEL ACCEL_CLASS_NAME("xen")
135 static const TypeInfo xen_accel_type = {
136 .name = TYPE_XEN_ACCEL,
137 .parent = TYPE_ACCEL,
138 .class_init = xen_accel_class_init,
141 static void xen_type_init(void)
143 type_register_static(&xen_accel_type);
146 type_init(xen_type_init);