Adding upstream version 3.4.23.upstream/3.4.23upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 565 insertions, 0 deletions

diff --git a/src/virtual/virtual.c b/src/virtual/virtual.c
new file mode 100644
index 0000000..29b1b71
--- /dev/null
+++ b/src/virtual/virtual.c
@@ -0,0 +1,565 @@
+/*++
+/* NAME
+/*	virtual 8
+/* SUMMARY
+/*	Postfix virtual domain mail delivery agent
+/* SYNOPSIS
+/*	\fBvirtual\fR [generic Postfix daemon options]
+/* DESCRIPTION
+/*	The \fBvirtual\fR(8) delivery agent is designed for virtual mail
+/*	hosting services. Originally based on the Postfix \fBlocal\fR(8)
+/*	delivery
+/*	agent, this agent looks up recipients with map lookups of their
+/*	full recipient address, instead of using hard-coded unix password
+/*	file lookups of the address local part only.
+/*
+/*	This delivery agent only delivers mail.  Other features such as
+/*	mail forwarding, out-of-office notifications, etc., must be
+/*	configured via virtual_alias maps or via similar lookup mechanisms.
+/* MAILBOX LOCATION
+/* .ad
+/* .fi
+/*	The mailbox location is controlled by the \fBvirtual_mailbox_base\fR
+/*	and \fBvirtual_mailbox_maps\fR configuration parameters (see below).
+/*	The \fBvirtual_mailbox_maps\fR table is indexed by the recipient
+/*	address as described under TABLE SEARCH ORDER below.
+/*
+/*	The mailbox pathname is constructed as follows:
+/*
+/* .nf
+/*	  \fB$virtual_mailbox_base/$virtual_mailbox_maps(\fIrecipient\fB)\fR
+/* .fi
+/*
+/*	where \fIrecipient\fR is the full recipient address.
+/* UNIX MAILBOX FORMAT
+/* .ad
+/* .fi
+/*	When the mailbox location does not end in \fB/\fR, the message
+/*	is delivered in UNIX mailbox format.   This format stores multiple
+/*	messages in one textfile.
+/*
+/*	The \fBvirtual\fR(8) delivery agent prepends a "\fBFrom \fIsender
+/*	time_stamp\fR" envelope header to each message, prepends a
+/*	\fBDelivered-To:\fR message header with the envelope recipient
+/*	address,
+/*	prepends an \fBX-Original-To:\fR header with the recipient address as
+/*	given to Postfix,
+/*	prepends a \fBReturn-Path:\fR message header with the
+/*	envelope sender address, prepends a \fB>\fR character to lines
+/*	beginning with "\fBFrom \fR", and appends an empty line.
+/*
+/*	The mailbox is locked for exclusive access while delivery is in
+/*	progress. In case of problems, an attempt is made to truncate the
+/*	mailbox to its original length.
+/* QMAIL MAILDIR FORMAT
+/* .ad
+/* .fi
+/*	When the mailbox location ends in \fB/\fR, the message is delivered
+/*	in qmail \fBmaildir\fR format. This format stores one message per file.
+/*
+/*	The \fBvirtual\fR(8) delivery agent prepends a \fBDelivered-To:\fR
+/*	message header with the final envelope recipient address,
+/*	prepends an \fBX-Original-To:\fR header with the recipient address as
+/*	given to Postfix, and prepends a
+/*	\fBReturn-Path:\fR message header with the envelope sender address.
+/*
+/*	By definition, \fBmaildir\fR format does not require application-level
+/*	file locking during mail delivery or retrieval.
+/* MAILBOX OWNERSHIP
+/* .ad
+/* .fi
+/*	Mailbox ownership is controlled by the \fBvirtual_uid_maps\fR
+/*	and \fBvirtual_gid_maps\fR lookup tables, which are indexed
+/*	with the full recipient address. Each table provides
+/*	a string with the numerical user and group ID, respectively.
+/*
+/*	The \fBvirtual_minimum_uid\fR parameter imposes a lower bound on
+/*	numerical user ID values that may be specified in any
+/*	\fBvirtual_uid_maps\fR.
+/* CASE FOLDING
+/* .ad
+/* .fi
+/*	All delivery decisions are made using the full recipient
+/*	address, folded to lower case. See also the next section
+/*	for a few exceptions with optional address extensions.
+/* TABLE SEARCH ORDER
+/* .ad
+/* .fi
+/*	Normally, a lookup table is specified as a text file that
+/*	serves as input to the \fBpostmap\fR(1) command. The result, an
+/*	indexed file in \fBdbm\fR or \fBdb\fR format, is used for fast
+/*	searching by the mail system.
+/*
+/*	The search order is as follows. The search stops
+/*	upon the first successful lookup.
+/* .IP \(bu
+/*	When the recipient has an optional address extension the
+/*	\fIuser+extension@domain.tld\fR address is looked up first.
+/* .sp
+/*	With Postfix versions before 2.1, the optional address extension
+/*	is always ignored.
+/* .IP \(bu
+/*	The \fIuser@domain.tld\fR address, without address extension,
+/*	is looked up next.
+/* .IP \(bu
+/*	Finally, the recipient \fI@domain\fR is looked up.
+/* .PP
+/*	When the table is provided via other means such as NIS, LDAP
+/*	or SQL, the same lookups are done as for ordinary indexed files.
+/*
+/*	Alternatively, a table can be provided as a regular-expression
+/*	map where patterns are given as regular expressions. In that case,
+/*	only the full recipient address is given to the regular-expression
+/*	map.
+/* SECURITY
+/* .ad
+/* .fi
+/*	The \fBvirtual\fR(8) delivery agent is not security sensitive, provided
+/*	that the lookup tables with recipient user/group ID information are
+/*	adequately protected. This program is not designed to run chrooted.
+/*
+/*	The \fBvirtual\fR(8) delivery agent disallows regular expression
+/*	substitution of $1 etc. in regular expression lookup tables,
+/*	because that would open a security hole.
+/*
+/*	The \fBvirtual\fR(8) delivery agent will silently ignore requests
+/*	to use the \fBproxymap\fR(8) server. Instead it will open the
+/*	table directly. Before Postfix version 2.2, the virtual
+/*	delivery agent will terminate with a fatal error.
+/* STANDARDS
+/*	RFC 822 (ARPA Internet Text Messages)
+/* DIAGNOSTICS
+/*	Mail bounces when the recipient has no mailbox or when the
+/*	recipient is over disk quota. In all other cases, mail for
+/*	an existing recipient is deferred and a warning is logged.
+/*
+/*	Problems and transactions are logged to \fBsyslogd\fR(8)
+/*	or \fBpostlogd\fR(8).
+/*	Corrupted message files are marked so that the queue
+/*	manager can move them to the \fBcorrupt\fR queue afterwards.
+/*
+/*	Depending on the setting of the \fBnotify_classes\fR parameter,
+/*	the postmaster is notified of bounces and of other trouble.
+/* BUGS
+/*	This delivery agent supports address extensions in email
+/*	addresses and in lookup table keys, but does not propagate
+/*	address extension information to the result of table lookup.
+/*
+/*	Postfix should have lookup tables that can return multiple result
+/*	attributes. In order to avoid the inconvenience of maintaining
+/*	three tables, use an LDAP or MYSQL database.
+/* CONFIGURATION PARAMETERS
+/* .ad
+/* .fi
+/*	Changes to \fBmain.cf\fR are picked up automatically, as
+/*	\fBvirtual\fR(8)
+/*	processes run for only a limited amount of time. Use the command
+/*	"\fBpostfix reload\fR" to speed up a change.
+/*
+/*	The text below provides only a parameter summary. See
+/*	\fBpostconf\fR(5) for more details including examples.
+/* MAILBOX DELIVERY CONTROLS
+/* .ad
+/* .fi
+/* .IP "\fBvirtual_mailbox_base (empty)\fR"
+/*	A prefix that the \fBvirtual\fR(8) delivery agent prepends to all pathname
+/*	results from $virtual_mailbox_maps table lookups.
+/* .IP "\fBvirtual_mailbox_maps (empty)\fR"
+/*	Optional lookup tables with all valid addresses in the domains that
+/*	match $virtual_mailbox_domains.
+/* .IP "\fBvirtual_minimum_uid (100)\fR"
+/*	The minimum user ID value that the \fBvirtual\fR(8) delivery agent accepts
+/*	as a result from $virtual_uid_maps table lookup.
+/* .IP "\fBvirtual_uid_maps (empty)\fR"
+/*	Lookup tables with the per-recipient user ID that the \fBvirtual\fR(8)
+/*	delivery agent uses while writing to the recipient's mailbox.
+/* .IP "\fBvirtual_gid_maps (empty)\fR"
+/*	Lookup tables with the per-recipient group ID for \fBvirtual\fR(8) mailbox
+/*	delivery.
+/* .PP
+/*	Available in Postfix version 2.0 and later:
+/* .IP "\fBvirtual_mailbox_domains ($virtual_mailbox_maps)\fR"
+/*	Postfix is final destination for the specified list of domains;
+/*	mail is delivered via the $virtual_transport mail delivery transport.
+/* .IP "\fBvirtual_transport (virtual)\fR"
+/*	The default mail delivery transport and next-hop destination for
+/*	final delivery to domains listed with $virtual_mailbox_domains.
+/* .PP
+/*	Available in Postfix version 2.5.3 and later:
+/* .IP "\fBstrict_mailbox_ownership (yes)\fR"
+/*	Defer delivery when a mailbox file is not owned by its recipient.
+/* LOCKING CONTROLS
+/* .ad
+/* .fi
+/* .IP "\fBvirtual_mailbox_lock (see 'postconf -d' output)\fR"
+/*	How to lock a UNIX-style \fBvirtual\fR(8) mailbox before attempting
+/*	delivery.
+/* .IP "\fBdeliver_lock_attempts (20)\fR"
+/*	The maximal number of attempts to acquire an exclusive lock on a
+/*	mailbox file or \fBbounce\fR(8) logfile.
+/* .IP "\fBdeliver_lock_delay (1s)\fR"
+/*	The time between attempts to acquire an exclusive lock on a mailbox
+/*	file or \fBbounce\fR(8) logfile.
+/* .IP "\fBstale_lock_time (500s)\fR"
+/*	The time after which a stale exclusive mailbox lockfile is removed.
+/* RESOURCE AND RATE CONTROLS
+/* .ad
+/* .fi
+/* .IP "\fBvirtual_mailbox_limit (51200000)\fR"
+/*	The maximal size in bytes of an individual \fBvirtual\fR(8) mailbox or
+/*	maildir file, or zero (no limit).
+/* .PP
+/*	Implemented in the qmgr(8) daemon:
+/* .IP "\fBvirtual_destination_concurrency_limit ($default_destination_concurrency_limit)\fR"
+/*	The maximal number of parallel deliveries to the same destination
+/*	via the virtual message delivery transport.
+/* .IP "\fBvirtual_destination_recipient_limit ($default_destination_recipient_limit)\fR"
+/*	The maximal number of recipients per message for the virtual
+/*	message delivery transport.
+/* MISCELLANEOUS CONTROLS
+/* .ad
+/* .fi
+/* .IP "\fBconfig_directory (see 'postconf -d' output)\fR"
+/*	The default location of the Postfix main.cf and master.cf
+/*	configuration files.
+/* .IP "\fBdaemon_timeout (18000s)\fR"
+/*	How much time a Postfix daemon process may take to handle a
+/*	request before it is terminated by a built-in watchdog timer.
+/* .IP "\fBdelay_logging_resolution_limit (2)\fR"
+/*	The maximal number of digits after the decimal point when logging
+/*	sub-second delay values.
+/* .IP "\fBipc_timeout (3600s)\fR"
+/*	The time limit for sending or receiving information over an internal
+/*	communication channel.
+/* .IP "\fBmax_idle (100s)\fR"
+/*	The maximum amount of time that an idle Postfix daemon process waits
+/*	for an incoming connection before terminating voluntarily.
+/* .IP "\fBmax_use (100)\fR"
+/*	The maximal number of incoming connections that a Postfix daemon
+/*	process will service before terminating voluntarily.
+/* .IP "\fBprocess_id (read-only)\fR"
+/*	The process ID of a Postfix command or daemon process.
+/* .IP "\fBprocess_name (read-only)\fR"
+/*	The process name of a Postfix command or daemon process.
+/* .IP "\fBqueue_directory (see 'postconf -d' output)\fR"
+/*	The location of the Postfix top-level queue directory.
+/* .IP "\fBsyslog_facility (mail)\fR"
+/*	The syslog facility of Postfix logging.
+/* .IP "\fBsyslog_name (see 'postconf -d' output)\fR"
+/*	A prefix that is prepended to the process name in syslog
+/*	records, so that, for example, "smtpd" becomes "prefix/smtpd".
+/* .PP
+/*	Available in Postfix version 3.0 and later:
+/* .IP "\fBvirtual_delivery_status_filter ($default_delivery_status_filter)\fR"
+/*	Optional filter for the \fBvirtual\fR(8) delivery agent to change the
+/*	delivery status code or explanatory text of successful or unsuccessful
+/*	deliveries.
+/* .PP
+/*	Available in Postfix version 3.3 and later:
+/* .IP "\fBenable_original_recipient (yes)\fR"
+/*	Enable support for the original recipient address after an
+/*	address is rewritten to a different address (for example with
+/*	aliasing or with canonical mapping).
+/* .IP "\fBservice_name (read-only)\fR"
+/*	The master.cf service name of a Postfix daemon process.
+/* SEE ALSO
+/*	qmgr(8), queue manager
+/*	bounce(8), delivery status reports
+/*	postconf(5), configuration parameters
+/*	postlogd(8), Postfix logging
+/*	syslogd(8), system logging
+/* README_FILES
+/*	Use "\fBpostconf readme_directory\fR" or
+/*	"\fBpostconf html_directory\fR" to locate this information.
+/*	VIRTUAL_README, domain hosting howto
+/* LICENSE
+/* .ad
+/* .fi
+/*	The Secure Mailer license must be distributed with this software.
+/* HISTORY
+/* .ad
+/* .fi
+/*	This delivery agent was originally based on the Postfix local delivery
+/*	agent. Modifications mainly consisted of removing code that either
+/*	was not applicable or that was not safe in this context: aliases,
+/*	~user/.forward files, delivery to "|command" or to /file/name.
+/*
+/*	The \fBDelivered-To:\fR message header appears in the \fBqmail\fR
+/*	system by Daniel Bernstein.
+/*
+/*	The \fBmaildir\fR structure appears in the \fBqmail\fR system
+/*	by Daniel Bernstein.
+/* AUTHOR(S)
+/*	Wietse Venema
+/*	IBM T.J. Watson Research
+/*	P.O. Box 704
+/*	Yorktown Heights, NY 10598, USA
+/*
+/*	Wietse Venema
+/*	Google, Inc.
+/*	111 8th Avenue
+/*	New York, NY 10011, USA
+/*
+/*	Andrew McNamara
+/*	andrewm@connect.com.au
+/*	connect.com.au Pty. Ltd.
+/*	Level 3, 213 Miller St
+/*	North Sydney 2060, NSW, Australia
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+#include <stdlib.h>
+#ifdef USE_PATHS_H
+#include <paths.h>			/* XXX mail_spool_dir dependency */
+#endif
+
+/* Utility library. */
+
+#include <msg.h>
+#include <vstring.h>
+#include <vstream.h>
+#include <iostuff.h>
+#include <set_eugid.h>
+#include <dict.h>
+
+/* Global library. */
+
+#include <mail_queue.h>
+#include <recipient_list.h>
+#include <deliver_request.h>
+#include <deliver_completed.h>
+#include <mail_params.h>
+#include <mail_version.h>
+#include <mail_conf.h>
+#include <mail_params.h>
+#include <mail_addr_find.h>
+#include <flush_clnt.h>
+
+/* Single server skeleton. */
+
+#include <mail_server.h>
+
+/* Application-specific. */
+
+#include "virtual.h"
+
+ /*
+  * Tunable parameters.
+  */
+char   *var_virt_mailbox_maps;
+char   *var_virt_uid_maps;
+char   *var_virt_gid_maps;
+int     var_virt_minimum_uid;
+char   *var_virt_mailbox_base;
+char   *var_virt_mailbox_lock;
+long    var_virt_mailbox_limit;
+char   *var_mail_spool_dir;		/* XXX dependency fix */
+bool    var_strict_mbox_owner;
+char   *var_virt_dsn_filter;
+
+ /*
+  * Mappings.
+  */
+MAPS   *virtual_mailbox_maps;
+MAPS   *virtual_uid_maps;
+MAPS   *virtual_gid_maps;
+
+ /*
+  * Bit masks.
+  */
+int     virtual_mbox_lock_mask;
+
+/* local_deliver - deliver message with extreme prejudice */
+
+static int local_deliver(DELIVER_REQUEST *rqst, char *service)
+{
+    const char *myname = "local_deliver";
+    RECIPIENT *rcpt_end = rqst->rcpt_list.info + rqst->rcpt_list.len;
+    RECIPIENT *rcpt;
+    int     rcpt_stat;
+    int     msg_stat;
+    LOCAL_STATE state;
+    USER_ATTR usr_attr;
+
+    if (msg_verbose)
+	msg_info("local_deliver: %s from %s", rqst->queue_id, rqst->sender);
+
+    /*
+     * Initialize the delivery attributes that are not recipient specific.
+     */
+    state.level = 0;
+    deliver_attr_init(&state.msg_attr);
+    state.msg_attr.queue_name = rqst->queue_name;
+    state.msg_attr.queue_id = rqst->queue_id;
+    state.msg_attr.fp = rqst->fp;
+    state.msg_attr.offset = rqst->data_offset;
+    state.msg_attr.sender = rqst->sender;
+    state.msg_attr.dsn_envid = rqst->dsn_envid;
+    state.msg_attr.dsn_ret = rqst->dsn_ret;
+    state.msg_attr.relay = service;
+    state.msg_attr.msg_stats = rqst->msg_stats;
+    RESET_USER_ATTR(usr_attr, state.level);
+    state.request = rqst;
+
+    /*
+     * Iterate over each recipient named in the delivery request. When the
+     * mail delivery status for a given recipient is definite (i.e. bounced
+     * or delivered), update the message queue file and cross off the
+     * recipient. Update the per-message delivery status.
+     */
+    for (msg_stat = 0, rcpt = rqst->rcpt_list.info; rcpt < rcpt_end; rcpt++) {
+	state.msg_attr.rcpt = *rcpt;
+	rcpt_stat = deliver_recipient(state, usr_attr);
+	if (rcpt_stat == 0 && (rqst->flags & DEL_REQ_FLAG_SUCCESS))
+	    deliver_completed(state.msg_attr.fp, rcpt->offset);
+	msg_stat |= rcpt_stat;
+    }
+
+    deliver_attr_free(&state.msg_attr);
+    return (msg_stat);
+}
+
+/* local_service - perform service for client */
+
+static void local_service(VSTREAM *stream, char *service, char **argv)
+{
+    DELIVER_REQUEST *request;
+    int     status;
+
+    /*
+     * Sanity check. This service takes no command-line arguments.
+     */
+    if (argv[0])
+	msg_fatal("unexpected command-line argument: %s", argv[0]);
+
+    /*
+     * This routine runs whenever a client connects to the UNIX-domain socket
+     * that is dedicated to local mail delivery service. What we see below is
+     * a little protocol to (1) tell the client that we are ready, (2) read a
+     * delivery request from the client, and (3) report the completion status
+     * of that request.
+     */
+    if ((request = deliver_request_read(stream)) != 0) {
+	status = local_deliver(request, service);
+	deliver_request_done(stream, request, status);
+    }
+}
+
+/* pre_accept - see if tables have changed */
+
+static void pre_accept(char *unused_name, char **unused_argv)
+{
+    const char *table;
+
+    if ((table = dict_changed_name()) != 0) {
+	msg_info("table %s has changed -- restarting", table);
+	exit(0);
+    }
+}
+
+/* post_init - post-jail initialization */
+
+static void post_init(char *unused_name, char **unused_argv)
+{
+
+    /*
+     * Drop privileges most of the time.
+     */
+    set_eugid(var_owner_uid, var_owner_gid);
+
+    /*
+     * No case folding needed: the recipient address is case folded.
+     */
+    virtual_mailbox_maps =
+	maps_create(VAR_VIRT_MAILBOX_MAPS, var_virt_mailbox_maps,
+		    DICT_FLAG_LOCK | DICT_FLAG_PARANOID
+		    | DICT_FLAG_UTF8_REQUEST);
+
+    virtual_uid_maps =
+	maps_create(VAR_VIRT_UID_MAPS, var_virt_uid_maps,
+		    DICT_FLAG_LOCK | DICT_FLAG_PARANOID
+		    | DICT_FLAG_UTF8_REQUEST);
+
+    virtual_gid_maps =
+	maps_create(VAR_VIRT_GID_MAPS, var_virt_gid_maps,
+		    DICT_FLAG_LOCK | DICT_FLAG_PARANOID
+		    | DICT_FLAG_UTF8_REQUEST);
+
+    virtual_mbox_lock_mask = mbox_lock_mask(var_virt_mailbox_lock);
+}
+
+/* pre_init - pre-jail initialization */
+
+static void pre_init(char *unused_name, char **unused_argv)
+{
+
+    /*
+     * Reset the file size limit from the message size limit to the mailbox
+     * size limit.
+     * 
+     * We can't have mailbox size limit smaller than the message size limit,
+     * because that prohibits the delivery agent from updating the queue
+     * file.
+     */
+    if (var_virt_mailbox_limit) {
+	if (var_virt_mailbox_limit < var_message_limit || var_message_limit == 0)
+	    msg_fatal("main.cf configuration error: %s is smaller than %s",
+		      VAR_VIRT_MAILBOX_LIMIT, VAR_MESSAGE_LIMIT);
+	set_file_limit(var_virt_mailbox_limit);
+    }
+
+    /*
+     * flush client.
+     */
+    flush_init();
+}
+
+MAIL_VERSION_STAMP_DECLARE;
+
+/* main - pass control to the single-threaded skeleton */
+
+int     main(int argc, char **argv)
+{
+    static const CONFIG_INT_TABLE int_table[] = {
+	VAR_VIRT_MINUID, DEF_VIRT_MINUID, &var_virt_minimum_uid, 1, 0,
+	0,
+    };
+    static const CONFIG_LONG_TABLE long_table[] = {
+	VAR_VIRT_MAILBOX_LIMIT, DEF_VIRT_MAILBOX_LIMIT, &var_virt_mailbox_limit, 0, 0,
+	0,
+    };
+    static const CONFIG_STR_TABLE str_table[] = {
+	VAR_MAIL_SPOOL_DIR, DEF_MAIL_SPOOL_DIR, &var_mail_spool_dir, 0, 0,
+	VAR_VIRT_MAILBOX_MAPS, DEF_VIRT_MAILBOX_MAPS, &var_virt_mailbox_maps, 0, 0,
+	VAR_VIRT_UID_MAPS, DEF_VIRT_UID_MAPS, &var_virt_uid_maps, 0, 0,
+	VAR_VIRT_GID_MAPS, DEF_VIRT_GID_MAPS, &var_virt_gid_maps, 0, 0,
+	VAR_VIRT_MAILBOX_BASE, DEF_VIRT_MAILBOX_BASE, &var_virt_mailbox_base, 1, 0,
+	VAR_VIRT_MAILBOX_LOCK, DEF_VIRT_MAILBOX_LOCK, &var_virt_mailbox_lock, 1, 0,
+	VAR_VIRT_DSN_FILTER, DEF_VIRT_DSN_FILTER, &var_virt_dsn_filter, 0, 0,
+	0,
+    };
+    static const CONFIG_BOOL_TABLE bool_table[] = {
+	VAR_STRICT_MBOX_OWNER, DEF_STRICT_MBOX_OWNER, &var_strict_mbox_owner,
+	0,
+    };
+
+    /*
+     * Fingerprint executables and core dumps.
+     */
+    MAIL_VERSION_STAMP_ALLOCATE;
+
+    single_server_main(argc, argv, local_service,
+		       CA_MAIL_SERVER_INT_TABLE(int_table),
+		       CA_MAIL_SERVER_LONG_TABLE(long_table),
+		       CA_MAIL_SERVER_STR_TABLE(str_table),
+		       CA_MAIL_SERVER_BOOL_TABLE(bool_table),
+		       CA_MAIL_SERVER_PRE_INIT(pre_init),
+		       CA_MAIL_SERVER_POST_INIT(post_init),
+		       CA_MAIL_SERVER_PRE_ACCEPT(pre_accept),
+		       CA_MAIL_SERVER_PRIVILEGED,
+		       CA_MAIL_SERVER_BOUNCE_INIT(VAR_VIRT_DSN_FILTER,
+						  &var_virt_dsn_filter),
+		       0);
+}