static void cuse_process_init_reply(struct fuse_conn *fc, struct fuse_req *req)
{
struct cuse_conn *cc = fc_to_cc(fc);
- struct cuse_init_out *arg = &req->misc.cuse_init_out;
+ struct cuse_init_out *arg = req->out.args[0].value;
struct page *page = req->pages[0];
struct cuse_devinfo devinfo = { };
struct device *dev;
dev_set_uevent_suppress(dev, 0);
kobject_uevent(&dev->kobj, KOBJ_ADD);
out:
+ kfree(arg);
__free_page(page);
return;
struct page *page;
struct fuse_conn *fc = &cc->fc;
struct cuse_init_in *arg;
+ void *outarg;
BUILD_BUG_ON(CUSE_INIT_INFO_MAX > PAGE_SIZE);
if (!page)
goto err_put_req;
+ outarg = kzalloc(sizeof(struct cuse_init_out), GFP_KERNEL);
+ if (!outarg)
+ goto err_free_page;
+
arg = &req->misc.cuse_init_in;
arg->major = FUSE_KERNEL_VERSION;
arg->minor = FUSE_KERNEL_MINOR_VERSION;
req->in.args[0].value = arg;
req->out.numargs = 2;
req->out.args[0].size = sizeof(struct cuse_init_out);
- req->out.args[0].value = &req->misc.cuse_init_out;
+ req->out.args[0].value = outarg;
req->out.args[1].size = CUSE_INIT_INFO_MAX;
req->out.argvar = 1;
req->out.argpages = 1;
return 0;
+err_free_page:
+ __free_page(page);
err_put_req:
fuse_put_request(fc, req);
err:
kfree(dequeue_forget(fc, 1, NULL));
}
+static void end_polls(struct fuse_conn *fc)
+{
+ struct rb_node *p;
+
+ p = rb_first(&fc->polled_files);
+
+ while (p) {
+ struct fuse_file *ff;
+ ff = rb_entry(p, struct fuse_file, polled_node);
+ wake_up_interruptible_all(&ff->poll_wait);
+
+ p = rb_next(p);
+ }
+}
+
/*
* Abort all requests.
*
fc->blocked = 0;
end_io_requests(fc);
end_queued_requests(fc);
+ end_polls(fc);
wake_up_all(&fc->waitq);
wake_up_all(&fc->blocked_waitq);
kill_fasync(&fc->fasync, SIGIO, POLL_IN);
fc->connected = 0;
fc->blocked = 0;
end_queued_requests(fc);
+ end_polls(fc);
wake_up_all(&fc->blocked_waitq);
spin_unlock(&fc->lock);
fuse_conn_put(fc);
{
struct inode *inode;
- if (nd && nd->flags & LOOKUP_RCU)
- return -ECHILD;
-
- inode = entry->d_inode;
+ inode = ACCESS_ONCE(entry->d_inode);
if (inode && is_bad_inode(inode))
return 0;
else if (fuse_dentry_time(entry) < get_jiffies_64()) {
if (!inode)
return 0;
+ if (nd->flags & LOOKUP_RCU)
+ return -ECHILD;
+
fc = get_fuse_conn(inode);
req = fuse_get_req(fc);
if (IS_ERR(req))
return err;
}
+static int fuse_perm_getattr(struct inode *inode, int flags)
+{
+ if (flags & IPERM_FLAG_RCU)
+ return -ECHILD;
+
+ return fuse_do_getattr(inode, NULL, NULL);
+}
+
/*
* Check permission. The two basic access models of FUSE are:
*
bool refreshed = false;
int err = 0;
- if (flags & IPERM_FLAG_RCU)
- return -ECHILD;
-
if (!fuse_allow_task(fc, current))
return -EACCES;
*/
if ((fc->flags & FUSE_DEFAULT_PERMISSIONS) ||
((mask & MAY_EXEC) && S_ISREG(inode->i_mode))) {
- err = fuse_update_attributes(inode, NULL, NULL, &refreshed);
- if (err)
- return err;
+ struct fuse_inode *fi = get_fuse_inode(inode);
+
+ if (fi->i_time < get_jiffies_64()) {
+ refreshed = true;
+
+ err = fuse_perm_getattr(inode, flags);
+ if (err)
+ return err;
+ }
}
if (fc->flags & FUSE_DEFAULT_PERMISSIONS) {
attributes. This is also needed, because the root
node will at first have no permissions */
if (err == -EACCES && !refreshed) {
- err = fuse_do_getattr(inode, NULL, NULL);
+ err = fuse_perm_getattr(inode, flags);
if (!err)
err = generic_permission(inode, mask,
flags, NULL);
noticed immediately, only after the attribute
timeout has expired */
} else if (mask & (MAY_ACCESS | MAY_CHDIR)) {
+ if (flags & IPERM_FLAG_RCU)
+ return -ECHILD;
+
err = fuse_access(inode, mask);
} else if ((mask & MAY_EXEC) && S_ISREG(inode->i_mode)) {
if (!(inode->i_mode & S_IXUGO)) {
if (refreshed)
return -EACCES;
- err = fuse_do_getattr(inode, NULL, NULL);
+ err = fuse_perm_getattr(inode, flags);
if (!err && !(inode->i_mode & S_IXUGO))
return -EACCES;
}