Commit 395a2076 authored Aug 30, 2018 by Thomas Werschlein Committed by Steve French Sep 02, 2018

cifs: connect to servername instead of IP for IPC$ share



This patch is required allows access to a Microsoft fileserver failover
cluster behind a 1:1 NAT firewall.

The change also provides stronger context for authentication and share
connection (see MS-SMB2 3.3.5.7 and MS-SRVS 3.1.6.8) as noted by
Tom Talpey, and addresses comments about the buffer size for the UNC
made by Aurélien Aptel.

Signed-off-by: Thomas Werschlein <thomas.werschlein@geo.uzh.ch>
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Tom Talpey <ttalpey@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
CC: Stable <stable@vger.kernel.org>

parent f8015683

fs/cifs/connect.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2547,7 +2547,7 @@ cifs_setup_ipc(struct cifs_ses ses, struct smb_vol volume_info)
		if (tcon == NULL)
		return -ENOMEM;

		snprintf(unc, sizeof(unc), "\\\\%s\\IPC$", ses->serverName);
		snprintf(unc, sizeof(unc), "\\\\%s\\IPC$", ses->server->hostname);

		/* cannot fail */
		nls_codepage = load_nls_default();

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