[PATCH] exportfs: add find_acceptable_alias helper

[linux-2.6] / fs / cifs / cifssmb.c

diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index d179b0c3eee45e4bc01bd4c6e3242b38f5559a81..6867e556d37e51485a4e9d35fb7ea332fc971b6d 100644 (file)
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -90,6 +90,18 @@ small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
           check for tcp and smb session status done differently
           for those three - in the calling routine */
        if(tcon) {
+               if(tcon->tidStatus == CifsExiting) {
+                       /* only tree disconnect, open, and write,
+                       (and ulogoff which does not have tcon)
+                       are allowed as we start force umount */
+                       if((smb_command != SMB_COM_WRITE_ANDX) && 
+                          (smb_command != SMB_COM_OPEN_ANDX) && 
+                          (smb_command != SMB_COM_TREE_DISCONNECT)) {
+                               cFYI(1,("can not send cmd %d while umounting",
+                                       smb_command));
+                               return -ENODEV;
+                       }
+               }
                if((tcon->ses) && (tcon->ses->status != CifsExiting) &&
                                  (tcon->ses->server)){
                        struct nls_table *nls_codepage;
@@ -187,6 +199,19 @@ smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
           check for tcp and smb session status done differently
           for those three - in the calling routine */
        if(tcon) {
+               if(tcon->tidStatus == CifsExiting) {
+                       /* only tree disconnect, open, and write,
+                         (and ulogoff which does not have tcon)
+                         are allowed as we start force umount */
+                       if((smb_command != SMB_COM_WRITE_ANDX) &&
+                          (smb_command != SMB_COM_OPEN_ANDX) &&
+                          (smb_command != SMB_COM_TREE_DISCONNECT)) {
+                               cFYI(1,("can not send cmd %d while umounting",
+                                       smb_command));
+                               return -ENODEV;
+                       }
+               }
+
                if((tcon->ses) && (tcon->ses->status != CifsExiting) && 
                                  (tcon->ses->server)){
                        struct nls_table *nls_codepage;