Reference in a new issue

Blame

Copy permalink

Reference in a new issue

Copy permalink

Vitaly Kuznetsov 87dffe86d4 xen/manage: don't complain about an empty value in control/sysrq node ...

When guest receives a sysrq request from the host it acknowledges it by
writing '\0' to control/sysrq xenstore node. This, however, make xenstore
watch fire again but xenbus_scanf() fails to parse empty value with "%c"
format string:

 sysrq: SysRq : Emergency Sync
 Emergency Sync complete
 xen:manage: Error -34 reading sysrq code in control/sysrq

Ignore -ERANGE the same way we already ignore -ENOENT, empty value in
control/sysrq is totally legal.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>

2018-09-14 08:51:10 -04:00

388 lines

8.2 KiB

Raw Permalink Blame History