smb3: log warning if CSC policy conflicts with cache mount option (cae53f70) · Commits · 戴 / test

If the server config (e.g. Samba smb.conf "csc policy = disable) for the share indicates that the share should not be cached, log a warning message if forced client side caching ("cache=ro" or "cache=singleclient") is requested on mount. Signed-off-by:

Steve French <stfrench@microsoft.com> Reviewed-by:

Ronnie Sahlberg <lsahlber@redhat.com>

fs/cifs/connect.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -3478,6 +3478,14 @@ cifs_get_tcon(struct cifs_ses ses, struct smb_vol volume_info)
		tcon->use_resilient = true;
		}

		/* If the user really knows what they are doing they can override */
		if (tcon->share_flags & SMB2_SHAREFLAG_NO_CACHING) {
		if (volume_info->cache_ro)
		cifs_dbg(VFS, "cache=ro requested on mount but NO_CACHING flag set on share\n");
		else if (volume_info->cache_rw)
		cifs_dbg(VFS, "cache=singleclient requested on mount but NO_CACHING flag set on share\n");
		}

		/*
		* We can have only one retry value for a connection to a share so for
		* resources mounted more than once to the same server share the last

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