On 01/25/2011 08:29 AM, anthony.perard@xxxxxxxxxx wrote:
From: Anthony PERARD<anthony.perard@xxxxxxxxxx>
This tells to the xen management tool that the machine can begin run.
Signed-off-by: Anthony PERARD<anthony.perard@xxxxxxxxxx>
---
xen-all.c | 27 +++++++++++++++++++++++++++
1 files changed, 27 insertions(+), 0 deletions(-)
diff --git a/xen-all.c b/xen-all.c
index a0248ee..c2d37d6 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -58,6 +58,8 @@ typedef struct XenIOState {
/* which vcpu we are serving */
int send_vcpu;
+ struct xs_handle *xenstore;
+
Notifier exit;
} XenIOState;
@@ -426,6 +428,21 @@ static void cpu_handle_ioreq(void *opaque)
}
}
+static void xenstore_record_dm_state(XenIOState *s, const char *state)
+{
+ char *path = NULL;
+
+ if (asprintf(&path, "/local/domain/0/device-model/%u/state", xen_domid) ==
-1) {
+ fprintf(stderr, "out of memory recording dm state\n");
+ exit(1);
+ }
asprintf() is very unportable.
+ if (!xs_write(s->xenstore, XBT_NULL, path, state, strlen(state))) {
+ fprintf(stderr, "error recording dm state\n");
+ exit(1);
+ }
+ free(path);
+}
+
static void xen_main_loop_prepare(XenIOState *state)
{
int evtchn_fd = -1;
@@ -441,6 +458,9 @@ static void xen_main_loop_prepare(XenIOState *state)
if (evtchn_fd != -1) {
qemu_set_fd_handler(evtchn_fd, cpu_handle_ioreq, NULL, state);
}
+
+ /* record state running */
+ xenstore_record_dm_state(state, "running");
}
@@ -459,6 +479,7 @@ static void xen_exit_notifier(Notifier *n)
XenIOState *state = container_of(n, XenIOState, exit);
xc_evtchn_close(state->xce_handle);
+ xs_daemon_close(state->xenstore);
}
int xen_init(int smp_cpus)
@@ -484,6 +505,12 @@ int xen_init(int smp_cpus)
return -errno;
}
+ state->xenstore = xs_daemon_open();
+ if (state->xenstore == NULL) {
+ perror("xen: xenstore open");
+ return -errno;
+ }
+
state->exit.notify = xen_exit_notifier;
qemu_add_exit_notifier(&state->exit);
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