static void aufs_inotify(struct inotify_watch *watch, u32 wd __maybe_unused,
u32 mask, u32 cookie __maybe_unused,
const char *h_child_name, struct inode *h_child_inode)
{
struct au_hnotify *hnotify;
struct qstr h_child_qstr = {
.name = h_child_name
};
/* if IN_UNMOUNT happens, there must be another bug */
AuDebugOn(mask & IN_UNMOUNT);
if (mask & (IN_IGNORED | IN_UNMOUNT)) {
put_inotify_watch(watch);
return;
}
#ifdef AuDbgHnotify
au_debug(1);
if (1 || !h_child_name || strcmp(h_child_name, AUFS_XINO_FNAME)) {
AuDbg("i%lu, wd %d, mask 0x%x %s, cookie 0x%x, hcname %s,"
" hi%lu\n",
watch->inode->i_ino, wd, mask, in_name(mask), cookie,
h_child_name ? h_child_name : "",
h_child_inode ? h_child_inode->i_ino : 0);
WARN_ON(1);
}
au_debug(0);
#endif
if (h_child_name)
h_child_qstr.len = strlen(h_child_name);
hnotify = container_of(watch, struct au_hnotify, hn_watch);
au_hnotify(watch->inode, hnotify, mask, &h_child_qstr, h_child_inode);
}
static int au_hfsn_handle_event(struct fsnotify_group *group,
struct fsnotify_mark *inode_mark,
struct fsnotify_mark *vfsmount_mark,
struct fsnotify_event *event)
{
int err;
struct au_hnotify *hnotify;
struct inode *h_dir, *h_inode;
__u32 mask;
struct qstr h_child_qstr = {
.name = event->file_name,
.len = event->name_len
};
AuDebugOn(event->data_type != FSNOTIFY_EVENT_INODE);
err = 0;
/* if FS_UNMOUNT happens, there must be another bug */
mask = event->mask;
AuDebugOn(mask & FS_UNMOUNT);
if (mask & (FS_IN_IGNORED | FS_UNMOUNT))
goto out;
h_dir = event->to_tell;
h_inode = event->inode;
#ifdef AuDbgHnotify
au_debug(1);
if (1 || h_child_qstr.len != sizeof(AUFS_XINO_FNAME) - 1
|| strncmp(h_child_qstr.name, AUFS_XINO_FNAME, h_child_qstr.len)) {
AuDbg("i%lu, mask 0x%x %s, hcname %.*s, hi%lu\n",
h_dir->i_ino, mask, au_hfsn_name(mask),
AuLNPair(&h_child_qstr), h_inode ? h_inode->i_ino : 0);
/* WARN_ON(1); */
}
au_debug(0);
#endif
AuDebugOn(!inode_mark);
hnotify = container_of(inode_mark, struct au_hnotify, hn_mark);
err = au_hnotify(h_dir, hnotify, mask, &h_child_qstr, h_inode);
out:
return err;
}
/* isn't it waste to ask every registered 'group'? */
/* copied from linux/fs/notify/inotify/inotify_fsnotiry.c */
/* it should be exported to modules */
static bool au_hfsn_should_send_event(struct fsnotify_group *group,
struct inode *h_inode,
struct fsnotify_mark *inode_mark,
struct fsnotify_mark *vfsmount_mark,
__u32 mask, void *data, int data_type)
{
mask = (mask & ~FS_EVENT_ON_CHILD);
return inode_mark->mask & mask;
}
