+static struct cifsSesInfo *
+cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
+{
+ int rc = -ENOMEM, xid;
+ struct cifsSesInfo *ses;
+
+ xid = GetXid();
+
+ ses = cifs_find_smb_ses(server, volume_info->username);
+ if (ses) {
+ cFYI(1, "Existing smb sess found (status=%d)", ses->status);
+
+ /* existing SMB ses has a server reference already */
+ cifs_put_tcp_session(server);
+
+ mutex_lock(&ses->session_mutex);
+ rc = cifs_negotiate_protocol(xid, ses);
+ if (rc) {
+ mutex_unlock(&ses->session_mutex);
+ /* problem -- put our ses reference */
+ cifs_put_smb_ses(ses);
+ FreeXid(xid);
+ return ERR_PTR(rc);
+ }
+ if (ses->need_reconnect) {
+ cFYI(1, "Session needs reconnect");
+ rc = cifs_setup_session(xid, ses,
+ volume_info->local_nls);
+ if (rc) {
+ mutex_unlock(&ses->session_mutex);
+ /* problem -- put our reference */
+ cifs_put_smb_ses(ses);
+ FreeXid(xid);
+ return ERR_PTR(rc);
+ }
+ }
+ mutex_unlock(&ses->session_mutex);
+ FreeXid(xid);
+ return ses;
+ }
+
+ cFYI(1, "Existing smb sess not found");
+ ses = sesInfoAlloc();
+ if (ses == NULL)
+ goto get_ses_fail;
+
+ /* new SMB session uses our server ref */
+ ses->server = server;
+ if (server->addr.sockAddr6.sin6_family == AF_INET6)
+ sprintf(ses->serverName, "%pI6",
+ &server->addr.sockAddr6.sin6_addr);
+ else
+ sprintf(ses->serverName, "%pI4",
+ &server->addr.sockAddr.sin_addr.s_addr);
+
+ if (volume_info->username)
+ strncpy(ses->userName, volume_info->username,
+ MAX_USERNAME_SIZE);
+
+ /* volume_info->password freed at unmount */
+ if (volume_info->password) {
+ ses->password = kstrdup(volume_info->password, GFP_KERNEL);
+ if (!ses->password)
+ goto get_ses_fail;
+ }
+ if (volume_info->domainname) {
+ int len = strlen(volume_info->domainname);
+ ses->domainName = kmalloc(len + 1, GFP_KERNEL);
+ if (ses->domainName)
+ strcpy(ses->domainName, volume_info->domainname);
+ }
+ ses->linux_uid = volume_info->linux_uid;
+ ses->overrideSecFlg = volume_info->secFlg;
+
+ mutex_lock(&ses->session_mutex);
+ rc = cifs_negotiate_protocol(xid, ses);
+ if (!rc)
+ rc = cifs_setup_session(xid, ses, volume_info->local_nls);
+ mutex_unlock(&ses->session_mutex);
+ if (rc)
+ goto get_ses_fail;
+
+ /* success, put it on the list */
+ write_lock(&cifs_tcp_ses_lock);
+ list_add(&ses->smb_ses_list, &server->smb_ses_list);
+ write_unlock(&cifs_tcp_ses_lock);
+
+ FreeXid(xid);
+ return ses;
+
+get_ses_fail:
+ sesInfoFree(ses);
+ FreeXid(xid);
+ return ERR_PTR(rc);
+}
+