124 lines
3.0 KiB
C
124 lines
3.0 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2014 Citrix Systems UK Ltd.
|
||
|
|
*
|
||
|
|
* This work is licensed under the terms of the GNU GPL, version 2. See
|
||
|
|
* the COPYING file in the top-level directory.
|
||
|
|
*
|
||
|
|
* Contributions after 2012-01-13 are licensed under the terms of the
|
||
|
|
* GNU GPL, version 2 or (at your option) any later version.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "hw/xen/xen_backend.h"
|
||
|
|
#include "qmp-commands.h"
|
||
|
|
#include "sysemu/char.h"
|
||
|
|
|
||
|
|
//#define DEBUG_XEN
|
||
|
|
|
||
|
|
#ifdef DEBUG_XEN
|
||
|
|
#define DPRINTF(fmt, ...) \
|
||
|
|
do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0)
|
||
|
|
#else
|
||
|
|
#define DPRINTF(fmt, ...) \
|
||
|
|
do { } while (0)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static int store_dev_info(int domid, CharDriverState *cs, const char *string)
|
||
|
|
{
|
||
|
|
struct xs_handle *xs = NULL;
|
||
|
|
char *path = NULL;
|
||
|
|
char *newpath = NULL;
|
||
|
|
char *pts = NULL;
|
||
|
|
int ret = -1;
|
||
|
|
|
||
|
|
/* Only continue if we're talking to a pty. */
|
||
|
|
if (strncmp(cs->filename, "pty:", 4)) {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
pts = cs->filename + 4;
|
||
|
|
|
||
|
|
/* We now have everything we need to set the xenstore entry. */
|
||
|
|
xs = xs_open(0);
|
||
|
|
if (xs == NULL) {
|
||
|
|
fprintf(stderr, "Could not contact XenStore\n");
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
|
||
|
|
path = xs_get_domain_path(xs, domid);
|
||
|
|
if (path == NULL) {
|
||
|
|
fprintf(stderr, "xs_get_domain_path() error\n");
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
newpath = realloc(path, (strlen(path) + strlen(string) +
|
||
|
|
strlen("/tty") + 1));
|
||
|
|
if (newpath == NULL) {
|
||
|
|
fprintf(stderr, "realloc error\n");
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
path = newpath;
|
||
|
|
|
||
|
|
strcat(path, string);
|
||
|
|
strcat(path, "/tty");
|
||
|
|
if (!xs_write(xs, XBT_NULL, path, pts, strlen(pts))) {
|
||
|
|
fprintf(stderr, "xs_write for '%s' fail", string);
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
ret = 0;
|
||
|
|
|
||
|
|
out:
|
||
|
|
free(path);
|
||
|
|
xs_close(xs);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
void xenstore_store_pv_console_info(int i, CharDriverState *chr)
|
||
|
|
{
|
||
|
|
if (i == 0) {
|
||
|
|
store_dev_info(xen_domid, chr, "/console");
|
||
|
|
} else {
|
||
|
|
char buf[32];
|
||
|
|
snprintf(buf, sizeof(buf), "/device/console/%d", i);
|
||
|
|
store_dev_info(xen_domid, chr, buf);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static void xenstore_record_dm_state(struct xs_handle *xs, const char *state)
|
||
|
|
{
|
||
|
|
char path[50];
|
||
|
|
|
||
|
|
if (xs == NULL) {
|
||
|
|
fprintf(stderr, "xenstore connection not initialized\n");
|
||
|
|
exit(1);
|
||
|
|
}
|
||
|
|
|
||
|
|
snprintf(path, sizeof (path), "device-model/%u/state", xen_domid);
|
||
|
|
if (!xs_write(xs, XBT_NULL, path, state, strlen(state))) {
|
||
|
|
fprintf(stderr, "error recording dm state\n");
|
||
|
|
exit(1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static void xen_change_state_handler(void *opaque, int running,
|
||
|
|
RunState state)
|
||
|
|
{
|
||
|
|
if (running) {
|
||
|
|
/* record state running */
|
||
|
|
xenstore_record_dm_state(xenstore, "running");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int xen_init(MachineClass *mc)
|
||
|
|
{
|
||
|
|
xen_xc = xen_xc_interface_open(0, 0, 0);
|
||
|
|
if (xen_xc == XC_HANDLER_INITIAL_VALUE) {
|
||
|
|
xen_be_printf(NULL, 0, "can't open xen interface\n");
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
qemu_add_vm_change_state_handler(xen_change_state_handler, NULL);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|