diff options
| author |   SeongJae Park <sjpark@amazon.de> | 2020-12-14 10:04:18 +0100 |
|---|---|---|
| committer |   Juergen Gross <jgross@suse.com> | 2020-12-14 10:04:18 +0100 |
| commit | 2e85d32b1c865bec703ce0c962221a5e955c52c2 (patch) | |
| tree | 9d0cce59ed6d8225cf99404797fea942270a061c /include/xen | |
| parent | xen/xenbus: Allow watches discard events before queueing (diff) | |
| download | linux-dev-2e85d32b1c865bec703ce0c962221a5e955c52c2.tar.xz linux-dev-2e85d32b1c865bec703ce0c962221a5e955c52c2.zip | |
xen/xenbus: Add 'will_handle' callback support in xenbus_watch_path()
Some code does not directly make 'xenbus_watch' object and call
'register_xenbus_watch()' but use 'xenbus_watch_path()' instead. This
commit adds support of 'will_handle' callback in the
'xenbus_watch_path()' and it's wrapper, 'xenbus_watch_pathfmt()'.
This is part of XSA-349
Cc: stable@vger.kernel.org
Signed-off-by: SeongJae Park <sjpark@amazon.de>
Reported-by: Michael Kurth <mku@amazon.de>
Reported-by: Pawel Wieczorkiewicz <wipawel@amazon.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'include/xen')
| -rw-r--r-- | include/xen/xenbus.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/xen/xenbus.h b/include/xen/xenbus.h index baa88bf0b9bc..c8574d1b814c 100644 --- a/include/xen/xenbus.h +++ b/include/xen/xenbus.h @@ -204,10 +204,14 @@ void xenbus_probe(struct work_struct *); int xenbus_watch_path(struct xenbus_device *dev, const char *path, struct xenbus_watch *watch, + bool (*will_handle)(struct xenbus_watch *, + const char *, const char *), void (*callback)(struct xenbus_watch *, const char *, const char *)); -__printf(4, 5) +__printf(5, 6) int xenbus_watch_pathfmt(struct xenbus_device *dev, struct xenbus_watch *watch, + bool (*will_handle)(struct xenbus_watch *, + const char *, const char *), void (*callback)(struct xenbus_watch *, const char *, const char *), const char *pathfmt, ...); |