statschannel.c revision 7781f25078c491a9650dec555bdc86cb0ed49861
/*
* Copyright (C) 2008 Internet Systems Consortium, Inc. ("ISC")
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: statschannel.c,v 1.16 2009/01/09 22:24:36 jinmei Exp $ */
/*! \file */
#include <config.h>
#include <isc/buffer.h>
#include <isc/httpd.h>
#include <isc/mem.h>
#include <isc/once.h>
#include <isc/print.h>
#include <isc/socket.h>
#include <isc/task.h>
#include <dns/cache.h>
#include <dns/db.h>
#include <dns/opcode.h>
#include <dns/rdataclass.h>
#include <dns/rdatatype.h>
#include <dns/stats.h>
#include <dns/view.h>
#include <dns/zt.h>
#include <named/log.h>
#include <named/server.h>
#include <named/statschannel.h>
#include "bind9.xsl.h"
struct ns_statschannel {
/* Unlocked */
isc_httpdmgr_t *httpdmgr;
isc_sockaddr_t address;
isc_mem_t *mctx;
/*
* Locked by channel lock: can be refererenced and modified by both
* the server task and the channel task.
*/
isc_mutex_t lock;
dns_acl_t *acl;
/* Locked by server task */
ISC_LINK(struct ns_statschannel) link;
};
typedef enum { statsformat_file, statsformat_xml } statsformat_t;
typedef struct
stats_dumparg {
statsformat_t type;
void *arg; /* type dependent argument */
const char *category; /* used for general statistics */
const char **desc; /* used for general statistics */
int ncounters; /* used for general statistics */
} stats_dumparg_t;
static isc_once_t once = ISC_ONCE_INIT;
/*%
* Statistics descriptions. These could be statistically initialized at
* compile time, but we configure them run time in the init_desc() function
* below so that they'll be less susceptible to counter name changes.
*/
static const char *nsstats_desc[dns_nsstatscounter_max];
static const char *resstats_desc[dns_resstatscounter_max];
static const char *zonestats_desc[dns_zonestatscounter_max];
#ifdef HAVE_LIBXML2
static const char *nsstats_xmldesc[dns_nsstatscounter_max];
static const char *resstats_xmldesc[dns_resstatscounter_max];
static const char *zonestats_xmldesc[dns_zonestatscounter_max];
#else
#define nsstats_xmldesc NULL
#define resstats_xmldesc NULL
#define zonestats_xmldesc NULL
#endif /* HAVE_LIBXML2 */
static inline void
set_desc(int counter, int maxcounter, const char *fdesc, const char **fdescs,
const char *xdesc, const char **xdescs)
{
REQUIRE(counter < maxcounter);
REQUIRE(fdescs[counter] == NULL);
#ifdef HAVE_LIBXML2
REQUIRE(xdescs[counter] == NULL);
#endif
fdescs[counter] = fdesc;
#ifdef HAVE_LIBXML2
xdescs[counter] = xdesc;
#else
UNUSED(xdesc);
UNUSED(xdescs);
#endif
}
static void
init_desc(void) {
int i;
/* Initialize name server statistics */
memset(nsstats_desc, 0,
dns_nsstatscounter_max * sizeof(nsstats_desc[0]));
#ifdef HAVE_LIBXML2
memset(nsstats_xmldesc, 0,
dns_nsstatscounter_max * sizeof(nsstats_xmldesc[0]));
#endif
set_desc(dns_nsstatscounter_requestv4, dns_nsstatscounter_max,
"IPv4 requests received", nsstats_desc,
"Requestv4", nsstats_xmldesc);
set_desc(dns_nsstatscounter_requestv6, dns_nsstatscounter_max,
"IPv6 requests received", nsstats_desc,
"Requestv6", nsstats_xmldesc);
set_desc(dns_nsstatscounter_edns0in, dns_nsstatscounter_max,
"requests with EDNS(0) received", nsstats_desc,
"ReqEdns0", nsstats_xmldesc);
set_desc(dns_nsstatscounter_badednsver, dns_nsstatscounter_max,
"requests with unsupported EDNS version received",
nsstats_desc,
"ReqBadEDNSVer", nsstats_xmldesc);
set_desc(dns_nsstatscounter_tsigin, dns_nsstatscounter_max,
"requests with TSIG received", nsstats_desc,
"ReqTSIG", nsstats_xmldesc);
set_desc(dns_nsstatscounter_sig0in, dns_nsstatscounter_max,
"requests with SIG(0) received", nsstats_desc,
"ReqSIG0", nsstats_xmldesc);
set_desc(dns_nsstatscounter_invalidsig, dns_nsstatscounter_max,
"requests with invalid signature", nsstats_desc,
"ReqBadSIG", nsstats_xmldesc);
set_desc(dns_nsstatscounter_tcp, dns_nsstatscounter_max,
"TCP requests received", nsstats_desc,
"ReqTCP", nsstats_xmldesc);
set_desc(dns_nsstatscounter_authrej, dns_nsstatscounter_max,
"auth queries rejected", nsstats_desc,
"AuthQryRej", nsstats_xmldesc);
set_desc(dns_nsstatscounter_recurserej, dns_nsstatscounter_max,
"recursive queries rejected", nsstats_desc,
"RecQryRej", nsstats_xmldesc);
set_desc(dns_nsstatscounter_xfrrej, dns_nsstatscounter_max,
"transfer requests rejected", nsstats_desc,
"XfrRej", nsstats_xmldesc);
set_desc(dns_nsstatscounter_updaterej, dns_nsstatscounter_max,
"update requests rejected", nsstats_desc,
"UpdateRej", nsstats_xmldesc);
set_desc(dns_nsstatscounter_response, dns_nsstatscounter_max,
"responses sent", nsstats_desc,
"Response", nsstats_xmldesc);
set_desc(dns_nsstatscounter_truncatedresp, dns_nsstatscounter_max,
"truncated responses sent", nsstats_desc,
"TruncatedResp", nsstats_xmldesc);
set_desc(dns_nsstatscounter_edns0out, dns_nsstatscounter_max,
"responses with EDNS(0) sent", nsstats_desc,
"RespEDNS0", nsstats_xmldesc);
set_desc(dns_nsstatscounter_tsigout, dns_nsstatscounter_max,
"responses with TSIG sent", nsstats_desc,
"RespTSIG", nsstats_xmldesc);
set_desc(dns_nsstatscounter_sig0out, dns_nsstatscounter_max,
"responses with SIG(0) sent", nsstats_desc,
"RespSIG0", nsstats_xmldesc);
set_desc(dns_nsstatscounter_success, dns_nsstatscounter_max,
"queries resulted in successful answer", nsstats_desc,
"QrySuccess", nsstats_xmldesc);
set_desc(dns_nsstatscounter_authans, dns_nsstatscounter_max,
"queries resulted in authoritative answer", nsstats_desc,
"QryAuthAns", nsstats_xmldesc);
set_desc(dns_nsstatscounter_nonauthans, dns_nsstatscounter_max,
"queries resulted in non authoritative answer", nsstats_desc,
"QryNoauthAns", nsstats_xmldesc);
set_desc(dns_nsstatscounter_referral, dns_nsstatscounter_max,
"queries resulted in referral answer", nsstats_desc,
"QryReferral", nsstats_xmldesc);
set_desc(dns_nsstatscounter_nxrrset, dns_nsstatscounter_max,
"queries resulted in nxrrset", nsstats_desc,
"QryNxrrset", nsstats_xmldesc);
set_desc(dns_nsstatscounter_servfail, dns_nsstatscounter_max,
"queries resulted in SERVFAIL", nsstats_desc,
"QrySERVFAIL", nsstats_xmldesc);
set_desc(dns_nsstatscounter_formerr, dns_nsstatscounter_max,
"queries resulted in FORMERR", nsstats_desc,
"QryFORMERR", nsstats_xmldesc);
set_desc(dns_nsstatscounter_nxdomain, dns_nsstatscounter_max,
"queries resulted in NXDOMAIN", nsstats_desc,
"QryNXDOMAIN", nsstats_xmldesc);
set_desc(dns_nsstatscounter_recursion, dns_nsstatscounter_max,
"queries caused recursion", nsstats_desc,
"QryRecursion", nsstats_xmldesc);
set_desc(dns_nsstatscounter_duplicate, dns_nsstatscounter_max,
"duplicate queries received", nsstats_desc,
"QryDuplicate", nsstats_xmldesc);
set_desc(dns_nsstatscounter_dropped, dns_nsstatscounter_max,
"queries dropped", nsstats_desc,
"QryDropped", nsstats_xmldesc);
set_desc(dns_nsstatscounter_failure, dns_nsstatscounter_max,
"other query failures", nsstats_desc,
"QryFailure", nsstats_xmldesc);
set_desc(dns_nsstatscounter_xfrdone, dns_nsstatscounter_max,
"requested transfers completed", nsstats_desc,
"XfrReqDone", nsstats_xmldesc);
set_desc(dns_nsstatscounter_updatereqfwd, dns_nsstatscounter_max,
"update requests forwarded", nsstats_desc,
"UpdateReqFwd", nsstats_xmldesc);
set_desc(dns_nsstatscounter_updaterespfwd, dns_nsstatscounter_max,
"update responses forwarded", nsstats_desc,
"UpdateRespFwd", nsstats_xmldesc);
set_desc(dns_nsstatscounter_updatefwdfail, dns_nsstatscounter_max,
"update forward failed", nsstats_desc,
"UpdateFwdFail", nsstats_xmldesc);
set_desc(dns_nsstatscounter_updatedone, dns_nsstatscounter_max,
"updates completed", nsstats_desc,
"UpdateDone", nsstats_xmldesc);
set_desc(dns_nsstatscounter_updatefail, dns_nsstatscounter_max,
"updates failed", nsstats_desc,
"UpdateFail", nsstats_xmldesc);
set_desc(dns_nsstatscounter_updatebadprereq, dns_nsstatscounter_max,
"updates rejected due to prerequisite failure", nsstats_desc,
"UpdateBadPrereq", nsstats_xmldesc);
/* Initialize resolver statistics */
memset(resstats_desc, 0,
dns_resstatscounter_max * sizeof(resstats_desc[0]));
#ifdef HAVE_LIBXML2
memset(resstats_xmldesc, 0,
dns_resstatscounter_max * sizeof(resstats_xmldesc[0]));
#endif
set_desc(dns_resstatscounter_queryv4, dns_resstatscounter_max,
"IPv4 queries sent", resstats_desc,
"Queryv4", resstats_xmldesc);
set_desc(dns_resstatscounter_queryv6, dns_resstatscounter_max,
"IPv6 queries sent", resstats_desc,
"Queryv6", resstats_xmldesc);
set_desc(dns_resstatscounter_responsev4, dns_resstatscounter_max,
"IPv4 responses received", resstats_desc,
"Responsev4", resstats_xmldesc);
set_desc(dns_resstatscounter_responsev6, dns_resstatscounter_max,
"IPv6 responses received", resstats_desc,
"Responsev6", resstats_xmldesc);
set_desc(dns_resstatscounter_nxdomain, dns_resstatscounter_max,
"NXDOMAIN received", resstats_desc,
"NXDOMAIN", resstats_xmldesc);
set_desc(dns_resstatscounter_servfail, dns_resstatscounter_max,
"SERVFAIL received", resstats_desc,
"SERVFAIL", resstats_xmldesc);
set_desc(dns_resstatscounter_formerr, dns_resstatscounter_max,
"FORMERR received", resstats_desc,
"FORMERR", resstats_xmldesc);
set_desc(dns_resstatscounter_othererror, dns_resstatscounter_max,
"other errors received", resstats_desc,
"OtherError", resstats_xmldesc);
set_desc(dns_resstatscounter_edns0fail, dns_resstatscounter_max,
"EDNS(0) query failures", resstats_desc,
"EDNS0Fail", resstats_xmldesc);
set_desc(dns_resstatscounter_mismatch, dns_resstatscounter_max,
"mismatch responses received", resstats_desc,
"Mismatch", resstats_xmldesc);
set_desc(dns_resstatscounter_truncated, dns_resstatscounter_max,
"truncated responses received", resstats_desc,
"Truncated", resstats_xmldesc);
set_desc(dns_resstatscounter_lame, dns_resstatscounter_max,
"lame delegations received", resstats_desc,
"Lame", resstats_xmldesc);
set_desc(dns_resstatscounter_retry, dns_resstatscounter_max,
"query retries", resstats_desc,
"Retry", resstats_xmldesc);
set_desc(dns_resstatscounter_gluefetchv4, dns_resstatscounter_max,
"IPv4 NS address fetches", resstats_desc,
"GlueFetchv4", resstats_xmldesc);
set_desc(dns_resstatscounter_gluefetchv6, dns_resstatscounter_max,
"IPv6 NS address fetches", resstats_desc,
"GlueFetchv6", resstats_xmldesc);
set_desc(dns_resstatscounter_gluefetchv4fail, dns_resstatscounter_max,
"IPv4 NS address fetch failed", resstats_desc,
"GlueFetchv4Fail", resstats_xmldesc);
set_desc(dns_resstatscounter_gluefetchv6fail, dns_resstatscounter_max,
"IPv6 NS address fetch failed", resstats_desc,
"GlueFetchv6Fail", resstats_xmldesc);
set_desc(dns_resstatscounter_val, dns_resstatscounter_max,
"DNSSEC validation attempted", resstats_desc,
"ValAttempt", resstats_xmldesc);
set_desc(dns_resstatscounter_valsuccess, dns_resstatscounter_max,
"DNSSEC validation succeeded", resstats_desc,
"ValOk", resstats_xmldesc);
set_desc(dns_resstatscounter_valnegsuccess, dns_resstatscounter_max,
"DNSSEC NX validation succeeded", resstats_desc,
"ValNegOk", resstats_xmldesc);
set_desc(dns_resstatscounter_valfail, dns_resstatscounter_max,
"DNSSEC validation failed", resstats_desc,
"ValFail", resstats_xmldesc);
/* Initialize zone statistics */
memset(zonestats_desc, 0,
dns_zonestatscounter_max * sizeof(zonestats_desc[0]));
#ifdef HAVE_LIBXML2
memset(zonestats_xmldesc, 0,
dns_zonestatscounter_max * sizeof(zonestats_xmldesc[0]));
#endif
set_desc(dns_zonestatscounter_notifyoutv4, dns_zonestatscounter_max,
"IPv4 notifies sent", zonestats_desc,
"NotifyOutv4", zonestats_xmldesc);
set_desc(dns_zonestatscounter_notifyoutv6, dns_zonestatscounter_max,
"IPv6 notifies sent", zonestats_desc,
"NotifyOutv6", zonestats_xmldesc);
set_desc(dns_zonestatscounter_notifyinv4, dns_zonestatscounter_max,
"IPv4 notifies received", zonestats_desc,
"NotifyInv4", zonestats_xmldesc);
set_desc(dns_zonestatscounter_notifyinv6, dns_zonestatscounter_max,
"IPv6 notifies received", zonestats_desc,
"NotifyInv6", zonestats_xmldesc);
set_desc(dns_zonestatscounter_notifyrej, dns_zonestatscounter_max,
"notifies rejected", zonestats_desc,
"NotifyRej", zonestats_xmldesc);
set_desc(dns_zonestatscounter_soaoutv4, dns_zonestatscounter_max,
"IPv4 SOA queries sent", zonestats_desc,
"SOAOutv4", zonestats_xmldesc);
set_desc(dns_zonestatscounter_soaoutv6, dns_zonestatscounter_max,
"IPv6 SOA queries sent", zonestats_desc,
"SOAOutv6", zonestats_xmldesc);
set_desc(dns_zonestatscounter_axfrreqv4, dns_zonestatscounter_max,
"IPv4 AXFR requested", zonestats_desc,
"AXFRReqv4", zonestats_xmldesc);
set_desc(dns_zonestatscounter_axfrreqv6, dns_zonestatscounter_max,
"IPv6 AXFR requested", zonestats_desc,
"AXFRReqv6", zonestats_xmldesc);
set_desc(dns_zonestatscounter_ixfrreqv4, dns_zonestatscounter_max,
"IPv4 IXFR requested", zonestats_desc,
"IXFRReqv4", zonestats_xmldesc);
set_desc(dns_zonestatscounter_ixfrreqv6, dns_zonestatscounter_max,
"IPv6 IXFR requested", zonestats_desc,
"IXFRReqv6", zonestats_xmldesc);
set_desc(dns_zonestatscounter_xfrsuccess, dns_zonestatscounter_max,
"transfer requests succeeded", zonestats_desc,
"XfrSuccess", zonestats_xmldesc);
set_desc(dns_zonestatscounter_xfrfail, dns_zonestatscounter_max,
"transfer requests failed", zonestats_desc,
"XfrFail", zonestats_xmldesc);
/* Sanity check */
for (i = 0; i < dns_nsstatscounter_max; i++)
INSIST(nsstats_desc[i] != NULL);
for (i = 0; i < dns_resstatscounter_max; i++)
INSIST(resstats_desc[i] != NULL);
for (i = 0; i < dns_zonestatscounter_max; i++)
INSIST(zonestats_desc[i] != NULL);
#ifdef HAVE_LIBXML2
for (i = 0; i < dns_nsstatscounter_max; i++)
INSIST(nsstats_xmldesc[i] != NULL);
for (i = 0; i < dns_resstatscounter_max; i++)
INSIST(resstats_xmldesc[i] != NULL);
for (i = 0; i < dns_zonestatscounter_max; i++)
INSIST(zonestats_xmldesc[i] != NULL);
#endif
}
/*%
* Dump callback functions.
*/
static void
generalstat_dump(dns_statscounter_t counter, isc_uint64_t val, void *arg) {
stats_dumparg_t *dumparg = arg;
FILE *fp;
#ifdef HAVE_LIBXML2
xmlTextWriterPtr writer;
#endif
REQUIRE(counter < dumparg->ncounters);
switch (dumparg->type) {
case statsformat_file:
fp = dumparg->arg;
fprintf(fp, "%20" ISC_PRINT_QUADFORMAT "u %s\n", val,
dumparg->desc[counter]);
break;
case statsformat_xml:
#ifdef HAVE_LIBXML2
writer = dumparg->arg;
if (dumparg->category != NULL) {
xmlTextWriterStartElement(writer,
ISC_XMLCHAR
dumparg->category);
xmlTextWriterStartElement(writer, ISC_XMLCHAR "name");
xmlTextWriterWriteString(writer, ISC_XMLCHAR
dumparg->desc[counter]);
xmlTextWriterEndElement(writer); /* name */
xmlTextWriterStartElement(writer, ISC_XMLCHAR
"counter");
} else {
xmlTextWriterStartElement(writer, ISC_XMLCHAR
dumparg->desc[counter]);
}
xmlTextWriterWriteFormatString(writer,
"%" ISC_PRINT_QUADFORMAT "u",
val);
xmlTextWriterEndElement(writer); /* counter */
if (dumparg->category != NULL)
xmlTextWriterEndElement(writer); /* category */
#endif
break;
}
}
static void
rdtypestat_dump(dns_rdatastatstype_t type, isc_uint64_t val, void *arg) {
char typebuf[64];
const char *typestr;
stats_dumparg_t *dumparg = arg;
FILE *fp;
#ifdef HAVE_LIBXML2
xmlTextWriterPtr writer;
#endif
if ((DNS_RDATASTATSTYPE_ATTR(type) & DNS_RDATASTATSTYPE_ATTR_OTHERTYPE)
== 0) {
dns_rdatatype_format(DNS_RDATASTATSTYPE_BASE(type), typebuf,
sizeof(typebuf));
typestr = typebuf;
} else
typestr = "Others";
switch (dumparg->type) {
case statsformat_file:
fp = dumparg->arg;
fprintf(fp, "%20" ISC_PRINT_QUADFORMAT "u %s\n", val, typestr);
break;
case statsformat_xml:
#ifdef HAVE_LIBXML2
writer = dumparg->arg;
xmlTextWriterStartElement(writer, ISC_XMLCHAR "rdtype");
xmlTextWriterStartElement(writer, ISC_XMLCHAR "name");
xmlTextWriterWriteString(writer, ISC_XMLCHAR typestr);
xmlTextWriterEndElement(writer); /* name */
xmlTextWriterStartElement(writer, ISC_XMLCHAR "counter");
xmlTextWriterWriteFormatString(writer,
"%" ISC_PRINT_QUADFORMAT "u",
val);
xmlTextWriterEndElement(writer); /* counter */
xmlTextWriterEndElement(writer); /* rdtype */
#endif
break;
}
}
static void
rdatasetstats_dump(dns_rdatastatstype_t type, isc_uint64_t val, void *arg) {
stats_dumparg_t *dumparg = arg;
FILE *fp;
char typebuf[64];
const char *typestr;
isc_boolean_t nxrrset = ISC_FALSE;
#ifdef HAVE_LIBXML2
xmlTextWriterPtr writer;
#endif
if ((DNS_RDATASTATSTYPE_ATTR(type) & DNS_RDATASTATSTYPE_ATTR_NXDOMAIN)
!= 0) {
typestr = "NXDOMAIN";
} else if ((DNS_RDATASTATSTYPE_ATTR(type) &
DNS_RDATASTATSTYPE_ATTR_OTHERTYPE) != 0) {
typestr = "Others";
} else {
dns_rdatatype_format(DNS_RDATASTATSTYPE_BASE(type), typebuf,
sizeof(typebuf));
typestr = typebuf;
}
if ((DNS_RDATASTATSTYPE_ATTR(type) & DNS_RDATASTATSTYPE_ATTR_NXRRSET)
!= 0)
nxrrset = ISC_TRUE;
switch (dumparg->type) {
case statsformat_file:
fp = dumparg->arg;
fprintf(fp, "%20" ISC_PRINT_QUADFORMAT "u %s%s\n", val,
nxrrset ? "!" : "", typestr);
break;
case statsformat_xml:
#ifdef HAVE_LIBXML2
writer = dumparg->arg;
xmlTextWriterStartElement(writer, ISC_XMLCHAR "rrset");
xmlTextWriterStartElement(writer, ISC_XMLCHAR "name");
xmlTextWriterWriteFormatString(writer, "%s%s",
nxrrset ? "!" : "", typestr);
xmlTextWriterEndElement(writer); /* name */
xmlTextWriterStartElement(writer, ISC_XMLCHAR "counter");
xmlTextWriterWriteFormatString(writer,
"%" ISC_PRINT_QUADFORMAT "u",
val);
xmlTextWriterEndElement(writer); /* counter */
xmlTextWriterEndElement(writer); /* rrset */
#endif
break;
}
}
static void
opcodestat_dump(dns_opcode_t code, isc_uint64_t val, void *arg) {
FILE *fp = arg;
isc_buffer_t b;
char codebuf[64];
stats_dumparg_t *dumparg = arg;
#ifdef HAVE_LIBXML2
xmlTextWriterPtr writer;
#endif
isc_buffer_init(&b, codebuf, sizeof(codebuf) - 1);
dns_opcode_totext(code, &b);
codebuf[isc_buffer_usedlength(&b)] = '\0';
switch (dumparg->type) {
case statsformat_file:
fp = dumparg->arg;
fprintf(fp, "%20" ISC_PRINT_QUADFORMAT "u %s\n", val, codebuf);
break;
case statsformat_xml:
#ifdef HAVE_LIBXML2
writer = dumparg->arg;
xmlTextWriterStartElement(writer, ISC_XMLCHAR "opcode");
xmlTextWriterStartElement(writer, ISC_XMLCHAR "name");
xmlTextWriterWriteString(writer, ISC_XMLCHAR codebuf);
xmlTextWriterEndElement(writer); /* name */
xmlTextWriterStartElement(writer, ISC_XMLCHAR "counter");
xmlTextWriterWriteFormatString(writer,
"%" ISC_PRINT_QUADFORMAT "u",
val);
xmlTextWriterEndElement(writer); /* counter */
xmlTextWriterEndElement(writer); /* opcode */
#endif
break;
}
}
#ifdef HAVE_LIBXML2
/* XXXMLG below here sucks. */
#define TRY(a) do { result = (a); INSIST(result == ISC_R_SUCCESS); } while(0);
#define TRY0(a) do { xmlrc = (a); INSIST(xmlrc >= 0); } while(0);
static isc_result_t
zone_xmlrender(dns_zone_t *zone, void *arg) {
char buf[1024 + 32]; /* sufficiently large for zone name and class */
dns_rdataclass_t rdclass;
isc_uint32_t serial;
xmlTextWriterPtr writer = arg;
stats_dumparg_t dumparg;
dns_stats_t *zonestats;
xmlTextWriterStartElement(writer, ISC_XMLCHAR "zone");
dns_zone_name(zone, buf, sizeof(buf));
xmlTextWriterStartElement(writer, ISC_XMLCHAR "name");
xmlTextWriterWriteString(writer, ISC_XMLCHAR buf);
xmlTextWriterEndElement(writer);
rdclass = dns_zone_getclass(zone);
dns_rdataclass_format(rdclass, buf, sizeof(buf));
xmlTextWriterStartElement(writer, ISC_XMLCHAR "rdataclass");
xmlTextWriterWriteString(writer, ISC_XMLCHAR buf);
xmlTextWriterEndElement(writer);
serial = dns_zone_getserial(zone);
xmlTextWriterStartElement(writer, ISC_XMLCHAR "serial");
xmlTextWriterWriteFormatString(writer, "%u", serial);
xmlTextWriterEndElement(writer);
dumparg.type = statsformat_xml;
dumparg.arg = writer;
dumparg.category = NULL;
dumparg.desc = nsstats_xmldesc;
dumparg.ncounters = dns_nsstatscounter_max;
zonestats = dns_zone_getrequeststats(zone);
if (zonestats != NULL) {
xmlTextWriterStartElement(writer, ISC_XMLCHAR "counters");
dns_generalstats_dump(zonestats, generalstat_dump,
&dumparg, DNS_STATSDUMP_VERBOSE);
xmlTextWriterEndElement(writer); /* counters */
}
xmlTextWriterEndElement(writer); /* zone */
return (ISC_R_SUCCESS);
}
static void
generatexml(ns_server_t *server, int *buflen, xmlChar **buf) {
char boottime[sizeof "yyyy-mm-ddThh:mm:ssZ"];
char nowstr[sizeof "yyyy-mm-ddThh:mm:ssZ"];
isc_time_t now;
xmlTextWriterPtr writer;
xmlDocPtr doc;
int xmlrc;
dns_view_t *view;
stats_dumparg_t dumparg;
dns_stats_t *cachestats;
isc_time_now(&now);
isc_time_formatISO8601(&ns_g_boottime, boottime, sizeof boottime);
isc_time_formatISO8601(&now, nowstr, sizeof nowstr);
writer = xmlNewTextWriterDoc(&doc, 0);
TRY0(xmlTextWriterStartDocument(writer, NULL, "UTF-8", NULL));
TRY0(xmlTextWriterWritePI(writer, ISC_XMLCHAR "xml-stylesheet",
ISC_XMLCHAR "type=\"text/xsl\" href=\"/bind9.xsl\""));
TRY0(xmlTextWriterStartElement(writer, ISC_XMLCHAR "isc"));
TRY0(xmlTextWriterWriteAttribute(writer, ISC_XMLCHAR "version",
ISC_XMLCHAR "1.0"));
TRY0(xmlTextWriterStartElement(writer, ISC_XMLCHAR "bind"));
TRY0(xmlTextWriterStartElement(writer, ISC_XMLCHAR "statistics"));
TRY0(xmlTextWriterWriteAttribute(writer, ISC_XMLCHAR "version",
ISC_XMLCHAR "2.1"));
/* Set common fields for statistics dump */
dumparg.type = statsformat_xml;
dumparg.arg = writer;
/*
* Start by rendering the views we know of here. For each view we
* know of, call its rendering function.
*/
view = ISC_LIST_HEAD(server->viewlist);
TRY0(xmlTextWriterStartElement(writer, ISC_XMLCHAR "views"));
while (view != NULL) {
xmlTextWriterStartElement(writer, ISC_XMLCHAR "view");
xmlTextWriterStartElement(writer, ISC_XMLCHAR "name");
xmlTextWriterWriteString(writer, ISC_XMLCHAR view->name);
xmlTextWriterEndElement(writer);
xmlTextWriterStartElement(writer, ISC_XMLCHAR "zones");
dns_zt_apply(view->zonetable, ISC_FALSE, zone_xmlrender,
writer);
xmlTextWriterEndElement(writer);
if (view->resquerystats != NULL) {
dns_rdatatypestats_dump(view->resquerystats,
rdtypestat_dump, &dumparg, 0);
}
if (view->resstats != NULL) {
dumparg.ncounters = dns_resstatscounter_max;
dumparg.category = "resstat";
dumparg.desc = resstats_xmldesc;
dns_generalstats_dump(view->resstats, generalstat_dump,
&dumparg, DNS_STATSDUMP_VERBOSE);
}
cachestats = dns_db_getrrsetstats(view->cachedb);
if (cachestats != NULL) {
TRY0(xmlTextWriterStartElement(writer,
ISC_XMLCHAR "cache"));
TRY0(xmlTextWriterWriteAttribute(writer,
ISC_XMLCHAR "name",
ISC_XMLCHAR
dns_cache_getname(view->cache)));
dns_rdatasetstats_dump(cachestats, rdatasetstats_dump,
&dumparg, 0);
TRY0(xmlTextWriterEndElement(writer)); /* cache */
}
xmlTextWriterEndElement(writer); /* view */
view = ISC_LIST_NEXT(view, link);
}
TRY0(xmlTextWriterEndElement(writer)); /* views */
TRY0(xmlTextWriterStartElement(writer, ISC_XMLCHAR "socketmgr"));
isc_socketmgr_renderxml(ns_g_socketmgr, writer);
TRY0(xmlTextWriterEndElement(writer)); /* socketmgr */
TRY0(xmlTextWriterStartElement(writer, ISC_XMLCHAR "taskmgr"));
isc_taskmgr_renderxml(ns_g_taskmgr, writer);
TRY0(xmlTextWriterEndElement(writer)); /* taskmgr */
TRY0(xmlTextWriterStartElement(writer, ISC_XMLCHAR "server"));
xmlTextWriterStartElement(writer, ISC_XMLCHAR "boot-time");
xmlTextWriterWriteString(writer, ISC_XMLCHAR boottime);
xmlTextWriterEndElement(writer);
xmlTextWriterStartElement(writer, ISC_XMLCHAR "current-time");
xmlTextWriterWriteString(writer, ISC_XMLCHAR nowstr);
xmlTextWriterEndElement(writer);
TRY0(xmlTextWriterStartElement(writer, ISC_XMLCHAR "requests"));
dns_opcodestats_dump(server->opcodestats, opcodestat_dump, &dumparg,
0);
xmlTextWriterEndElement(writer); /* requests */
TRY0(xmlTextWriterStartElement(writer, ISC_XMLCHAR "queries-in"));
dns_rdatatypestats_dump(server->rcvquerystats, rdtypestat_dump,
&dumparg, 0);
xmlTextWriterEndElement(writer); /* queries-in */
dumparg.category = "nsstat";
dumparg.desc = nsstats_xmldesc;
dumparg.ncounters = dns_nsstatscounter_max;
dns_generalstats_dump(server->nsstats, generalstat_dump, &dumparg,
DNS_STATSDUMP_VERBOSE);
dumparg.category = "zonestat";
dumparg.desc = zonestats_xmldesc;
dumparg.ncounters = dns_zonestatscounter_max;
dns_generalstats_dump(server->zonestats, generalstat_dump, &dumparg,
DNS_STATSDUMP_VERBOSE);
/*
* Most of the common resolver statistics entries are 0, so we don't
* use the verbose dump here.
*/
dumparg.category = "resstat";
dumparg.ncounters = dns_resstatscounter_max;
dumparg.desc = resstats_xmldesc;
dns_generalstats_dump(server->resolverstats, generalstat_dump,
&dumparg, 0);
xmlTextWriterEndElement(writer); /* server */
TRY0(xmlTextWriterStartElement(writer, ISC_XMLCHAR "memory"));
isc_mem_renderxml(writer);
TRY0(xmlTextWriterEndElement(writer)); /* memory */
TRY0(xmlTextWriterEndElement(writer)); /* statistics */
TRY0(xmlTextWriterEndElement(writer)); /* bind */
TRY0(xmlTextWriterEndElement(writer)); /* isc */
TRY0(xmlTextWriterEndDocument(writer));
xmlFreeTextWriter(writer);
xmlDocDumpFormatMemoryEnc(doc, buf, buflen, "UTF-8", 1);
xmlFreeDoc(doc);
}
static void
wrap_xmlfree(isc_buffer_t *buffer, void *arg) {
UNUSED(arg);
xmlFree(isc_buffer_base(buffer));
}
static isc_result_t
render_index(const char *url, const char *querystring, void *arg,
unsigned int *retcode, const char **retmsg, const char **mimetype,
isc_buffer_t *b, isc_httpdfree_t **freecb,
void **freecb_args)
{
unsigned char *msg;
int msglen;
ns_server_t *server = arg;
UNUSED(url);
UNUSED(querystring);
generatexml(server, &msglen, &msg);
*retcode = 200;
*retmsg = "OK";
*mimetype = "text/xml";
isc_buffer_reinit(b, msg, msglen);
isc_buffer_add(b, msglen);
*freecb = wrap_xmlfree;
*freecb_args = NULL;
return (ISC_R_SUCCESS);
}
#endif /* HAVE_LIBXML2 */
static isc_result_t
render_xsl(const char *url, const char *querystring, void *args,
unsigned int *retcode, const char **retmsg, const char **mimetype,
isc_buffer_t *b, isc_httpdfree_t **freecb,
void **freecb_args)
{
UNUSED(url);
UNUSED(querystring);
UNUSED(args);
*retcode = 200;
*retmsg = "OK";
*mimetype = "text/xslt+xml";
isc_buffer_reinit(b, xslmsg, strlen(xslmsg));
isc_buffer_add(b, strlen(xslmsg));
*freecb = NULL;
*freecb_args = NULL;
return (ISC_R_SUCCESS);
}
static void
shutdown_listener(ns_statschannel_t *listener) {
char socktext[ISC_SOCKADDR_FORMATSIZE];
isc_sockaddr_format(&listener->address, socktext, sizeof(socktext));
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,NS_LOGMODULE_SERVER,
ISC_LOG_NOTICE, "stopping statistics channel on %s",
socktext);
isc_httpdmgr_shutdown(&listener->httpdmgr);
}
static isc_boolean_t
client_ok(const isc_sockaddr_t *fromaddr, void *arg) {
ns_statschannel_t *listener = arg;
isc_netaddr_t netaddr;
char socktext[ISC_SOCKADDR_FORMATSIZE];
int match;
REQUIRE(listener != NULL);
isc_netaddr_fromsockaddr(&netaddr, fromaddr);
LOCK(&listener->lock);
if (dns_acl_match(&netaddr, NULL, listener->acl, &ns_g_server->aclenv,
&match, NULL) == ISC_R_SUCCESS && match > 0) {
UNLOCK(&listener->lock);
return (ISC_TRUE);
}
UNLOCK(&listener->lock);
isc_sockaddr_format(fromaddr, socktext, sizeof(socktext));
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
"rejected statistics connection from %s", socktext);
return (ISC_FALSE);
}
static void
destroy_listener(void *arg) {
ns_statschannel_t *listener = arg;
REQUIRE(listener != NULL);
REQUIRE(!ISC_LINK_LINKED(listener, link));
/* We don't have to acquire the lock here since it's already unlinked */
dns_acl_detach(&listener->acl);
DESTROYLOCK(&listener->lock);
isc_mem_putanddetach(&listener->mctx, listener, sizeof(*listener));
}
static isc_result_t
add_listener(ns_server_t *server, ns_statschannel_t **listenerp,
const cfg_obj_t *listen_params, const cfg_obj_t *config,
isc_sockaddr_t *addr, cfg_aclconfctx_t *aclconfctx,
const char *socktext)
{
isc_result_t result;
ns_statschannel_t *listener;
isc_task_t *task = NULL;
isc_socket_t *sock = NULL;
const cfg_obj_t *allow;
dns_acl_t *new_acl = NULL;
listener = isc_mem_get(server->mctx, sizeof(*listener));
if (listener == NULL)
return (ISC_R_NOMEMORY);
listener->httpdmgr = NULL;
listener->address = *addr;
listener->acl = NULL;
listener->mctx = NULL;
ISC_LINK_INIT(listener, link);
result = isc_mutex_init(&listener->lock);
if (result != ISC_R_SUCCESS) {
isc_mem_put(server->mctx, listener, sizeof(*listener));
return (ISC_R_FAILURE);
}
isc_mem_attach(server->mctx, &listener->mctx);
allow = cfg_tuple_get(listen_params, "allow");
if (allow != NULL && cfg_obj_islist(allow)) {
result = cfg_acl_fromconfig(allow, config, ns_g_lctx,
aclconfctx, listener->mctx, 0,
&new_acl);
} else
result = dns_acl_any(listener->mctx, &new_acl);
if (result != ISC_R_SUCCESS)
goto cleanup;
dns_acl_attach(new_acl, &listener->acl);
dns_acl_detach(&new_acl);
result = isc_task_create(ns_g_taskmgr, 0, &task);
if (result != ISC_R_SUCCESS)
goto cleanup;
isc_task_setname(task, "statchannel", NULL);
result = isc_socket_create(ns_g_socketmgr, isc_sockaddr_pf(addr),
isc_sockettype_tcp, &sock);
if (result != ISC_R_SUCCESS)
goto cleanup;
isc_socket_setname(sock, "statchannel", NULL);
#ifndef ISC_ALLOW_MAPPED
isc_socket_ipv6only(sock, ISC_TRUE);
#endif
result = isc_socket_bind(sock, addr, ISC_SOCKET_REUSEADDRESS);
if (result != ISC_R_SUCCESS)
goto cleanup;
result = isc_httpdmgr_create(server->mctx, sock, task, client_ok,
destroy_listener, listener, ns_g_timermgr,
&listener->httpdmgr);
if (result != ISC_R_SUCCESS)
goto cleanup;
#ifdef HAVE_LIBXML2
isc_httpdmgr_addurl(listener->httpdmgr, "/", render_index, server);
#endif
isc_httpdmgr_addurl(listener->httpdmgr, "/bind9.xsl", render_xsl,
server);
*listenerp = listener;
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_SERVER, ISC_LOG_NOTICE,
"statistics channel listening on %s", socktext);
cleanup:
if (result != ISC_R_SUCCESS) {
if (listener->acl != NULL)
dns_acl_detach(&listener->acl);
DESTROYLOCK(&listener->lock);
isc_mem_putanddetach(&listener->mctx, listener,
sizeof(*listener));
}
if (task != NULL)
isc_task_detach(&task);
if (sock != NULL)
isc_socket_detach(&sock);
return (result);
}
static void
update_listener(ns_server_t *server, ns_statschannel_t **listenerp,
const cfg_obj_t *listen_params, const cfg_obj_t *config,
isc_sockaddr_t *addr, cfg_aclconfctx_t *aclconfctx,
const char *socktext)
{
ns_statschannel_t *listener;
const cfg_obj_t *allow = NULL;
dns_acl_t *new_acl = NULL;
isc_result_t result = ISC_R_SUCCESS;
for (listener = ISC_LIST_HEAD(server->statschannels);
listener != NULL;
listener = ISC_LIST_NEXT(listener, link))
if (isc_sockaddr_equal(addr, &listener->address))
break;
if (listener == NULL) {
*listenerp = NULL;
return;
}
/*
* Now, keep the old access list unless a new one can be made.
*/
allow = cfg_tuple_get(listen_params, "allow");
if (allow != NULL && cfg_obj_islist(allow)) {
result = cfg_acl_fromconfig(allow, config, ns_g_lctx,
aclconfctx, listener->mctx, 0,
&new_acl);
} else
result = dns_acl_any(listener->mctx, &new_acl);
if (result == ISC_R_SUCCESS) {
LOCK(&listener->lock);
dns_acl_detach(&listener->acl);
dns_acl_attach(new_acl, &listener->acl);
dns_acl_detach(&new_acl);
UNLOCK(&listener->lock);
} else {
cfg_obj_log(listen_params, ns_g_lctx, ISC_LOG_WARNING,
"couldn't install new acl for "
"statistics channel %s: %s",
socktext, isc_result_totext(result));
}
*listenerp = listener;
}
isc_result_t
ns_statschannels_configure(ns_server_t *server, const cfg_obj_t *config,
cfg_aclconfctx_t *aclconfctx)
{
ns_statschannel_t *listener, *listener_next;
ns_statschannellist_t new_listeners;
const cfg_obj_t *statschannellist = NULL;
const cfg_listelt_t *element, *element2;
char socktext[ISC_SOCKADDR_FORMATSIZE];
RUNTIME_CHECK(isc_once_do(&once, init_desc) == ISC_R_SUCCESS);
ISC_LIST_INIT(new_listeners);
/*
* Get the list of named.conf 'statistics-channels' statements.
*/
(void)cfg_map_get(config, "statistics-channels", &statschannellist);
/*
* Run through the new address/port list, noting sockets that are
* already being listened on and moving them to the new list.
*
* Identifying duplicate addr/port combinations is left to either
* the underlying config code, or to the bind attempt getting an
* address-in-use error.
*/
if (statschannellist != NULL) {
#ifndef HAVE_LIBXML2
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
"statistics-channels specified but not effective "
"due to missing XML library");
#endif
for (element = cfg_list_first(statschannellist);
element != NULL;
element = cfg_list_next(element)) {
const cfg_obj_t *statschannel;
const cfg_obj_t *listenercfg = NULL;
statschannel = cfg_listelt_value(element);
(void)cfg_map_get(statschannel, "inet",
&listenercfg);
if (listenercfg == NULL)
continue;
for (element2 = cfg_list_first(listenercfg);
element2 != NULL;
element2 = cfg_list_next(element2)) {
const cfg_obj_t *listen_params;
const cfg_obj_t *obj;
isc_sockaddr_t addr;
listen_params = cfg_listelt_value(element2);
obj = cfg_tuple_get(listen_params, "address");
addr = *cfg_obj_assockaddr(obj);
if (isc_sockaddr_getport(&addr) == 0)
isc_sockaddr_setport(&addr, NS_STATSCHANNEL_HTTPPORT);
isc_sockaddr_format(&addr, socktext,
sizeof(socktext));
isc_log_write(ns_g_lctx,
NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_SERVER,
ISC_LOG_DEBUG(9),
"processing statistics "
"channel %s",
socktext);
update_listener(server, &listener,
listen_params, config, &addr,
aclconfctx, socktext);
if (listener != NULL) {
/*
* Remove the listener from the old
* list, so it won't be shut down.
*/
ISC_LIST_UNLINK(server->statschannels,
listener, link);
} else {
/*
* This is a new listener.
*/
isc_result_t r;
r = add_listener(server, &listener,
listen_params, config,
&addr, aclconfctx,
socktext);
if (r != ISC_R_SUCCESS) {
cfg_obj_log(listen_params,
ns_g_lctx,
ISC_LOG_WARNING,
"couldn't allocate "
"statistics channel"
" %s: %s",
socktext,
isc_result_totext(r));
}
}
if (listener != NULL)
ISC_LIST_APPEND(new_listeners, listener,
link);
}
}
}
for (listener = ISC_LIST_HEAD(server->statschannels);
listener != NULL;
listener = listener_next) {
listener_next = ISC_LIST_NEXT(listener, link);
ISC_LIST_UNLINK(server->statschannels, listener, link);
shutdown_listener(listener);
}
ISC_LIST_APPENDLIST(server->statschannels, new_listeners, link);
return (ISC_R_SUCCESS);
}
void
ns_statschannels_shutdown(ns_server_t *server) {
ns_statschannel_t *listener;
while ((listener = ISC_LIST_HEAD(server->statschannels)) != NULL) {
ISC_LIST_UNLINK(server->statschannels, listener, link);
shutdown_listener(listener);
}
}
isc_result_t
ns_stats_dump(ns_server_t *server, FILE *fp) {
isc_stdtime_t now;
isc_result_t result;
dns_view_t *view;
dns_zone_t *zone, *next;
stats_dumparg_t dumparg;
RUNTIME_CHECK(isc_once_do(&once, init_desc) == ISC_R_SUCCESS);
/* Set common fields */
dumparg.type = statsformat_file;
dumparg.arg = fp;
dumparg.category = NULL; /* unused */
isc_stdtime_get(&now);
fprintf(fp, "+++ Statistics Dump +++ (%lu)\n", (unsigned long)now);
fprintf(fp, "++ Incoming Requests ++\n");
dns_opcodestats_dump(server->opcodestats, opcodestat_dump, &dumparg, 0);
fprintf(fp, "++ Incoming Queries ++\n");
dns_rdatatypestats_dump(server->rcvquerystats, rdtypestat_dump,
&dumparg, 0);
fprintf(fp, "++ Outgoing Queries ++\n");
for (view = ISC_LIST_HEAD(server->viewlist);
view != NULL;
view = ISC_LIST_NEXT(view, link)) {
if (view->resquerystats == NULL)
continue;
if (strcmp(view->name, "_default") == 0)
fprintf(fp, "[View: default]\n");
else
fprintf(fp, "[View: %s]\n", view->name);
dns_rdatatypestats_dump(view->resquerystats, rdtypestat_dump,
&dumparg, 0);
}
fprintf(fp, "++ Name Server Statistics ++\n");
dumparg.desc = nsstats_desc;
dumparg.ncounters = dns_nsstatscounter_max;
dns_generalstats_dump(server->nsstats, generalstat_dump, &dumparg, 0);
fprintf(fp, "++ Zone Maintenance Statistics ++\n");
dumparg.desc = zonestats_desc;
dumparg.ncounters = dns_zonestatscounter_max;
dns_generalstats_dump(server->zonestats, generalstat_dump, &dumparg, 0);
fprintf(fp, "++ Resolver Statistics ++\n");
fprintf(fp, "[Common]\n");
dumparg.desc = resstats_desc;
dumparg.ncounters = dns_resstatscounter_max;
dns_generalstats_dump(server->resolverstats, generalstat_dump, &dumparg,
0);
for (view = ISC_LIST_HEAD(server->viewlist);
view != NULL;
view = ISC_LIST_NEXT(view, link)) {
if (view->resstats == NULL)
continue;
if (strcmp(view->name, "_default") == 0)
fprintf(fp, "[View: default]\n");
else
fprintf(fp, "[View: %s]\n", view->name);
dns_generalstats_dump(view->resstats, generalstat_dump,
&dumparg, 0);
}
fprintf(fp, "++ Cache DB RRsets ++\n");
for (view = ISC_LIST_HEAD(server->viewlist);
view != NULL;
view = ISC_LIST_NEXT(view, link)) {
dns_stats_t *cachestats;
cachestats = dns_db_getrrsetstats(view->cachedb);
if (cachestats == NULL)
continue;
if (strcmp(view->name, "_default") == 0)
fprintf(fp, "[View: default]\n");
else
fprintf(fp, "[View: %s (Cache: %s)]\n", view->name,
dns_cache_getname(view->cache));
if (dns_view_iscacheshared(view)) {
/*
* Avoid dumping redundant statistics when the cache is
* shared.
*/
continue;
}
dns_rdatasetstats_dump(cachestats, rdatasetstats_dump, &dumparg,
0);
}
fprintf(fp, "++ Per Zone Query Statistics ++\n");
zone = NULL;
for (result = dns_zone_first(server->zonemgr, &zone);
result == ISC_R_SUCCESS;
next = NULL, result = dns_zone_next(zone, &next), zone = next)
{
dns_stats_t *zonestats = dns_zone_getrequeststats(zone);
if (zonestats != NULL) {
char zonename[DNS_NAME_FORMATSIZE];
dns_name_format(dns_zone_getorigin(zone),
zonename, sizeof(zonename));
view = dns_zone_getview(zone);
fprintf(fp, "[%s", zonename);
if (strcmp(view->name, "_default") != 0)
fprintf(fp, " (view: %s)", view->name);
fprintf(fp, "]\n");
dumparg.desc = nsstats_desc;
dumparg.ncounters = dns_nsstatscounter_max;
dns_generalstats_dump(zonestats, generalstat_dump,
&dumparg, 0);
}
}
fprintf(fp, "--- Statistics Dump --- (%lu)\n", (unsigned long)now);
return (ISC_R_SUCCESS); /* this function currently always succeeds */
}