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| author |   Amir Goldstein <amir73il@gmail.com> | 2019-01-10 19:04:40 +0200 |
|---|---|---|
| committer |   Jan Kara <jack@suse.cz> | 2019-02-07 16:38:35 +0100 |
| commit | 0a20df7ed3349dfa3260ddee2efa919df44d0ad5 (patch) | |
| tree | a67f25db1275679997c0d7348c0c25896e33dde7 /fs/notify | |
| parent | fanotify: use vfs_get_fsid() helper instead of vfs_statfs() (diff) | |
| download | wireguard-linux-0a20df7ed3349dfa3260ddee2efa919df44d0ad5.tar.xz wireguard-linux-0a20df7ed3349dfa3260ddee2efa919df44d0ad5.zip | |
fsnotify: report FS_ISDIR flag with MOVE_SELF and DELETE_SELF events
We need to report FS_ISDIR flag with MOVE_SELF and DELETE_SELF events
for fanotify, because fanotify API requires the user to explicitly
request events on directories by FAN_ONDIR flag.
inotify never reported IN_ISDIR with those events. It looks like an
oversight, but to avoid the risk of breaking existing inotify programs,
mask the FS_ISDIR flag out when reprting those events to inotify backend.
We also add the FS_ISDIR flag with FS_ATTRIB event in the case of rename
over an empty target directory. inotify did not report IN_ISDIR in this
case, but it normally does report IN_ISDIR along with IN_ATTRIB event,
so in this case, we do not mask out the FS_ISDIR flag.
[JK: Simplify the checks in fsnotify_move()]
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/notify')
| -rw-r--r-- | fs/notify/inotify/inotify_fsnotify.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/notify/inotify/inotify_fsnotify.c b/fs/notify/inotify/inotify_fsnotify.c index fe97299975f2..ff30abd6a49b 100644 --- a/fs/notify/inotify/inotify_fsnotify.c +++ b/fs/notify/inotify/inotify_fsnotify.c @@ -113,6 +113,15 @@ int inotify_handle_event(struct fsnotify_group *group, return -ENOMEM; } + /* + * We now report FS_ISDIR flag with MOVE_SELF and DELETE_SELF events + * for fanotify. inotify never reported IN_ISDIR with those events. + * It looks like an oversight, but to avoid the risk of breaking + * existing inotify programs, mask the flag out from those events. + */ + if (mask & (IN_MOVE_SELF | IN_DELETE_SELF)) + mask &= ~IN_ISDIR; + fsn_event = &event->fse; fsnotify_init_event(fsn_event, inode); event->mask = mask; |