static void
smb_put_super(struct super_block *sb)
{
struct smb_sb_info *server = SMB_SB(sb);
lock_kernel();
smb_lock_server(server);
server->state = CONN_INVALID;
smbiod_unregister_server(server);
smb_close_socket(server);
if (server->conn_pid)
kill_pid(server->conn_pid, SIGTERM, 1);
bdi_destroy(&server->bdi);
kfree(server->ops);
smb_unload_nls(server);
sb->s_fs_info = NULL;
smb_unlock_server(server);
put_pid(server->conn_pid);
kfree(server);
unlock_kernel();
}
static int
smb_fsync(struct file *file, struct dentry * dentry, int datasync)
{
struct smb_sb_info *server = server_from_dentry(dentry);
int result;
VERBOSE("sync file %s/%s\n", DENTRY_PATH(dentry));
/*
* The VFS will writepage() all dirty pages for us, but we
* should send a SMBflush to the server, letting it know that
* we want things synchronized with actual storage.
*
* Note: this function requires all pages to have been written already
* (should be ok with writepage_sync)
*/
smb_lock_server(server);
result = smb_proc_flush(server, dentry->d_inode->u.smbfs_i.fileid);
smb_unlock_server(server);
return result;
}
/*
* Add a request and tell smbiod to process it
*/
int smb_add_request(struct smb_request *req)
{
long timeleft;
struct smb_sb_info *server = req->rq_server;
int result = 0;
smb_setup_request(req);
if (req->rq_trans2_command) {
if (req->rq_buffer == NULL) {
PARANOIA("trans2 attempted without response buffer!\n");
return -EIO;
}
result = smb_setup_trans2request(req);
}
if (result < 0)
return result;
#ifdef SMB_DEBUG_PACKET_SIZE
add_xmit_stats(req);
#endif
/* add 'req' to the queue of requests */
if (smb_lock_server_interruptible(server))
return -EINTR;
/*
* Try to send the request as the process. If that fails we queue the
* request and let smbiod send it later.
*/
/* FIXME: each server has a number on the maximum number of parallel
requests. 10, 50 or so. We should not allow more requests to be
active. */
if (server->mid > 0xf000)
server->mid = 0;
req->rq_mid = server->mid++;
WSET(req->rq_header, smb_mid, req->rq_mid);
result = 0;
if (server->state == CONN_VALID) {
if (list_empty(&server->xmitq))
result = smb_request_send_req(req);
if (result < 0) {
/* Connection lost? */
server->conn_error = result;
server->state = CONN_INVALID;
}
}
if (result != 1)
list_add_tail(&req->rq_queue, &server->xmitq);
smb_rget(req);
if (server->state != CONN_VALID)
smbiod_retry(server);
smb_unlock_server(server);
smbiod_wake_up();
timeleft = wait_event_interruptible_timeout(req->rq_wait,
req->rq_flags & SMB_REQ_RECEIVED, 30*HZ);
if (!timeleft || signal_pending(current)) {
/*
* On timeout or on interrupt we want to try and remove the
* request from the recvq/xmitq.
* First check if the request is still part of a queue. (May
* have been removed by some error condition)
*/
smb_lock_server(server);
if (!list_empty(&req->rq_queue)) {
list_del_init(&req->rq_queue);
smb_rput(req);
}
smb_unlock_server(server);
}
if (!timeleft) {
PARANOIA("request [%p, mid=%d] timed out!\n",
req, req->rq_mid);
VERBOSE("smb_com: %02x\n", *(req->rq_header + smb_com));
VERBOSE("smb_rcls: %02x\n", *(req->rq_header + smb_rcls));
VERBOSE("smb_flg: %02x\n", *(req->rq_header + smb_flg));
VERBOSE("smb_tid: %04x\n", WVAL(req->rq_header, smb_tid));
VERBOSE("smb_pid: %04x\n", WVAL(req->rq_header, smb_pid));
VERBOSE("smb_uid: %04x\n", WVAL(req->rq_header, smb_uid));
VERBOSE("smb_mid: %04x\n", WVAL(req->rq_header, smb_mid));
VERBOSE("smb_wct: %02x\n", *(req->rq_header + smb_wct));
req->rq_rcls = ERRSRV;
req->rq_err = ERRtimeout;
/* Just in case it was "stuck" */
smbiod_wake_up();
}
VERBOSE("woke up, rcls=%d\n", req->rq_rcls);
if (req->rq_rcls != 0)
req->rq_errno = smb_errno(req);
if (signal_pending(current))
req->rq_errno = -ERESTARTSYS;
return req->rq_errno;
}