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cifs: do not send tree disconnect to ipc shares

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On session close, the IPC is closed and the server must release all
tcons of the session.  It doesn't matter if we send a ipc close or
not.

Besides, it will make the server to not close durable and resilient
files on session close, as specified in MS-SMB2 3.3.5.6 Receiving an
SMB2 LOGOFF Request.

Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Paulo Alcantara 2021-06-04 19:25:27 -03:00 committed by Steve French
parent 966a3cb7c7
commit f3191fc800
1 changed files with 8 additions and 12 deletions
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20
fs/cifs/connect.c
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@ -1557,29 +1557,25 @@ out:
/**
* cifs_free_ipc - helper to release the session IPC tcon
*
* Needs to be called everytime a session is destroyed
* Needs to be called everytime a session is destroyed.
*
* On session close, the IPC is closed and the server must release all tcons of the session.
* No need to send a tree disconnect here.
*
* Besides, it will make the server to not close durable and resilient files on session close, as
* specified in MS-SMB2 3.3.5.6 Receiving an SMB2 LOGOFF Request.
*/
static int
cifs_free_ipc(struct cifs_ses *ses)
{
int rc = 0, xid;
struct cifs_tcon *tcon = ses->tcon_ipc;
if (tcon == NULL)
return 0;
if (ses->server->ops->tree_disconnect) {
xid = get_xid();
rc = ses->server->ops->tree_disconnect(xid, tcon);
free_xid(xid);
}
if (rc)
cifs_dbg(FYI, "failed to disconnect IPC tcon (rc=%d)\n", rc);
tconInfoFree(tcon);
ses->tcon_ipc = NULL;
return rc;
return 0;
}
static struct cifs_ses *