Patchwork [RFC,V4,13/14] xen: Set running state in xenstore.

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Submitter Anthony PERARD
Date Sept. 28, 2010, 3:01 p.m.
Message ID <1285686097-13036-14-git-send-email-anthony.perard@citrix.com>
Download mbox | patch
Permalink /patch/65984/
State New
Headers show

Comments

Anthony PERARD - Sept. 28, 2010, 3:01 p.m.
From: Anthony PERARD <anthony.perard@citrix.com>

This tells to the xen management tool that the machine can begin run.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---
 xen-all.c |   19 +++++++++++++++++++
 1 files changed, 19 insertions(+), 0 deletions(-)

Patch

diff --git a/xen-all.c b/xen-all.c
index c33773a..d69ad16 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -423,6 +423,22 @@  static void cpu_handle_ioreq(void *opaque)
     }
 }
 
+static void xenstore_record_dm_state(const char *state)
+{
+    char *path = NULL;
+    struct xs_handle *xenstore = xs_daemon_open();
+
+    if (asprintf(&path, "/local/domain/0/device-model/%u/state", xen_domid) == -1) {
+        fprintf(stderr, "out of memory recording dm state\n");
+        exit(1);
+    }
+    if (!xs_write(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 = state->xce_handle == -1 ? -1 : xc_evtchn_fd(state->xce_handle);
@@ -434,6 +450,9 @@  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("running");
 }