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xen: handle backend deletion from xenstore 

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
This commit is contained in:
Stefano Stabellini 2012-03-30 14:33:03 +00:00
parent 9468e9c41a
commit 77ba8fef89
2 changed files with 13 additions and 8 deletions
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17
hw/xen_backend.c
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@ -592,7 +592,7 @@ static void xenstore_update_be(char *watch, char *type, int dom,
struct XenDevOps *ops)
{
struct XenDevice *xendev;
char path[XEN_BUFSIZE], *dom0;
char path[XEN_BUFSIZE], *dom0, *bepath;
unsigned int len, dev;
dom0 = xs_get_domain_path(xenstore, 0);
@ -611,15 +611,16 @@ static void xenstore_update_be(char *watch, char *type, int dom,
return;
}
if (0) {
/* FIXME: detect devices being deleted from xenstore ... */
xen_be_del_xendev(dom, dev);
}
xendev = xen_be_get_xendev(type, dom, dev, ops);
if (xendev != NULL) {
xen_be_backend_changed(xendev, path);
xen_be_check_state(xendev);
bepath = xs_read(xenstore, 0, xendev->be, &len);
if (bepath == NULL) {
xen_be_del_xendev(dom, dev);
} else {
free(bepath);
xen_be_backend_changed(xendev, path);
xen_be_check_state(xendev);
}
}
}

4
hw/xen_disk.c
View File

@ -745,6 +745,10 @@ static int blk_free(struct XenDevice *xendev)
struct XenBlkDev *blkdev = container_of(xendev, struct XenBlkDev, xendev);
struct ioreq *ioreq;
if (blkdev->bs || blkdev->sring) {
blk_disconnect(xendev);
}
while (!QLIST_EMPTY(&blkdev->freelist)) {
ioreq = QLIST_FIRST(&blkdev->freelist);
QLIST_REMOVE(ioreq, list);