| commit | 5dae8e5fb803f53fadc116cefe353953b938cbe1 | |
| author | Stefan Hajnoczi <stefanha@redhat.com> | |
| Mon, 24 Jun 2013 15:13:09 +0000 (24 17:13 +0200) | ||
| committer | Kevin Wolf <kwolf@redhat.com> | |
| Fri, 28 Jun 2013 07:20:26 +0000 (28 09:20 +0200) | ||
| tree | 65f12d6da71012da6e771a0c2d6c4bb0c9df7d43 | treesnapshot (tar.gz zip) |
| parent | a5c5ea3f60c000bf18c99435439533728a5f34a2 | commitdiff |
notify: add NotiferWithReturn so notifier list can abort
notifier_list_notify() has no return value. This is fine when we just
want to invoke side-effects.
Sometimes it's useful for notifiers to produce a return value. This
allows notifiers to "veto" an operation and will be used by the block
layer before-write notifier.
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
notifier_list_notify() has no return value. This is fine when we just
want to invoke side-effects.
Sometimes it's useful for notifiers to produce a return value. This
allows notifiers to "veto" an operation and will be used by the block
layer before-write notifier.
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| include/qemu/notify.h | diffblobblamehistory | |
| util/notify.c | diffblobblamehistory |