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Commit 57acc40d authored by Jeff Layton's avatar Jeff Layton Committed by Trond Myklebust
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nfs: reject version and minorversion changes on remount attempts

parent 3660cd43
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+4 −0
Original line number Original line Diff line number Diff line
@@ -2143,6 +2143,8 @@ nfs_compare_remount_data(struct nfs_server *nfss,
	if (data->flags != nfss->flags ||
	if (data->flags != nfss->flags ||
	    data->rsize != nfss->rsize ||
	    data->rsize != nfss->rsize ||
	    data->wsize != nfss->wsize ||
	    data->wsize != nfss->wsize ||
	    data->version != nfss->nfs_client->rpc_ops->version ||
	    data->minorversion != nfss->nfs_client->cl_minorversion ||
	    data->retrans != nfss->client->cl_timeout->to_retries ||
	    data->retrans != nfss->client->cl_timeout->to_retries ||
	    data->auth_flavors[0] != nfss->client->cl_auth->au_flavor ||
	    data->auth_flavors[0] != nfss->client->cl_auth->au_flavor ||
	    data->acregmin != nfss->acregmin / HZ ||
	    data->acregmin != nfss->acregmin / HZ ||
@@ -2197,6 +2199,8 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data)
	data->timeo = 10U * nfss->client->cl_timeout->to_initval / HZ;
	data->timeo = 10U * nfss->client->cl_timeout->to_initval / HZ;
	data->nfs_server.port = nfss->port;
	data->nfs_server.port = nfss->port;
	data->nfs_server.addrlen = nfss->nfs_client->cl_addrlen;
	data->nfs_server.addrlen = nfss->nfs_client->cl_addrlen;
	data->version = nfsvers;
	data->minorversion = nfss->nfs_client->cl_minorversion;
	memcpy(&data->nfs_server.address, &nfss->nfs_client->cl_addr,
	memcpy(&data->nfs_server.address, &nfss->nfs_client->cl_addr,
		data->nfs_server.addrlen);
		data->nfs_server.addrlen);