6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson

ab023a65562e62b85a824509d829b6fad87e00b1Rob Austein

364a82f7c25b62967678027043425201a5e5171aBob Halley

9c566a852f31c3a5d0b9d6eaf11463114339c01dAndreas Gustafsson#if 0

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define DUMP_ADB_AFTER_CLEANING

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#endif

5afa531442369eed0e93a8af14422b30f400bd89Mark Andrews

476386968b1f287a695f73c48862e961011af99bMark Andrews#include <config.h>

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson

9259fed3d8ac5d1efa9b5a647969e40c9c934484Andreas Gustafsson#include <limits.h>

3aca8e5bf3740bbcc3bb13dde242d7cc369abb27Mark Andrews

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#include <isc/mutexblock.h>

9c566a852f31c3a5d0b9d6eaf11463114339c01dAndreas Gustafsson#include <isc/netaddr.h>

9c566a852f31c3a5d0b9d6eaf11463114339c01dAndreas Gustafsson#include <isc/random.h>

62700b67eb8abb7d13f9c3c1bc4b60a1477d35d8Mark Andrews#include <isc/string.h> /* Required for HP/UX (and others?) */

9259fed3d8ac5d1efa9b5a647969e40c9c934484Andreas Gustafsson#include <isc/task.h>

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson#include <isc/timer.h>

ab023a65562e62b85a824509d829b6fad87e00b1Rob Austein#include <isc/util.h>

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson#include <dns/a6.h>

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson#include <dns/adb.h>

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson#include <dns/db.h>

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson#include <dns/events.h>

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson#include <dns/log.h>

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson#include <dns/rdata.h>

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson#include <dns/rdataset.h>

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson#include <dns/rdatastruct.h>

ab023a65562e62b85a824509d829b6fad87e00b1Rob Austein#include <dns/resolver.h>

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson#include <dns/result.h>

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson#define DNS_ADB_MAGIC ISC_MAGIC('D', 'a', 'd', 'b')

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrews#define DNS_ADB_VALID(x) ISC_MAGIC_VALID(x, DNS_ADB_MAGIC)

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrews#define DNS_ADBNAME_MAGIC ISC_MAGIC('a', 'd', 'b', 'N')

2f012d936b5ccdf6520c96a4de23721dc58a2221Automatic Updater#define DNS_ADBNAME_VALID(x) ISC_MAGIC_VALID(x, DNS_ADBNAME_MAGIC)

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson#define DNS_ADBNAMEHOOK_MAGIC ISC_MAGIC('a', 'd', 'N', 'H')

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson#define DNS_ADBNAMEHOOK_VALID(x) ISC_MAGIC_VALID(x, DNS_ADBNAMEHOOK_MAGIC)

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson#define DNS_ADBZONEINFO_MAGIC ISC_MAGIC('a', 'd', 'b', 'Z')

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson#define DNS_ADBZONEINFO_VALID(x) ISC_MAGIC_VALID(x, DNS_ADBZONEINFO_MAGIC)

7b68fa6229f1edadac44c7ec459c9ed77a8368c8Mark Andrews#define DNS_ADBENTRY_MAGIC ISC_MAGIC('a', 'd', 'b', 'E')

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrews#define DNS_ADBENTRY_VALID(x) ISC_MAGIC_VALID(x, DNS_ADBENTRY_MAGIC)

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define DNS_ADBFETCH_MAGIC ISC_MAGIC('a', 'd', 'F', '4')

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson#define DNS_ADBFETCH_VALID(x) ISC_MAGIC_VALID(x, DNS_ADBFETCH_MAGIC)

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define DNS_ADBFETCH6_MAGIC ISC_MAGIC('a', 'd', 'F', '6')

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define DNS_ADBFETCH6_VALID(x) ISC_MAGIC_VALID(x, DNS_ADBFETCH6_MAGIC)

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define NBUCKETS 1009 /* how many buckets for names/addrs */

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson#define ADB_CACHE_MINIMUM 10 /* seconds */

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson#define ADB_CACHE_MAXIMUM 86400 /* seconds (86400 = 24 hours) */

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define CLEAN_PERIOD 3600

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define CLEAN_SECONDS 30

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define CLEAN_BUCKETS ((NBUCKETS * CLEAN_SECONDS) / CLEAN_PERIOD)

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson#define FREE_ITEMS 64 /* free count for memory pools */

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson#define FILL_COUNT 16 /* fill count for memory pools */

ab023a65562e62b85a824509d829b6fad87e00b1Rob Austein

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define DNS_ADB_INVALIDBUCKET (-1) /* invalid bucket address */

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define DNS_ADB_MINADBSIZE (1024*1024) /* 1 Megabyte */

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrews

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrewstypedef ISC_LIST(dns_adbname_t) dns_adbnamelist_t;

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrewstypedef struct dns_adbnamehook dns_adbnamehook_t;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtontypedef ISC_LIST(dns_adbnamehook_t) dns_adbnamehooklist_t;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtontypedef struct dns_adbzoneinfo dns_adbzoneinfo_t;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtontypedef ISC_LIST(dns_adbentry_t) dns_adbentrylist_t;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtontypedef struct dns_adbfetch dns_adbfetch_t;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtontypedef struct dns_adbfetch6 dns_adbfetch6_t;

a687a0592bbe3a582860eb5f03725bf80d7ac1d8Mark Andrews

a687a0592bbe3a582860eb5f03725bf80d7ac1d8Mark Andrewsstruct dns_adb {

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington unsigned int magic;

a687a0592bbe3a582860eb5f03725bf80d7ac1d8Mark Andrews

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_mutex_t lock;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_mutex_t reflock; /* Covers irefcnt, erefcnt */

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_mem_t *mctx;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_view_t *view;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_timermgr_t *timermgr;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_timer_t *timer;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_taskmgr_t *taskmgr;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_task_t *task;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_boolean_t overmem;

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrews

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrews isc_interval_t tick_interval;

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrews int next_cleanbucket;

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrews

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrews unsigned int irefcnt;

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrews unsigned int erefcnt;

4e1d3e67cdc76609bad5f0310ac48de10b442b9fMark Andrews

0015ab097438e041197b19b9de2ba48f6bfd1c6cDavid Lawrence isc_mutex_t mplock;

0015ab097438e041197b19b9de2ba48f6bfd1c6cDavid Lawrence isc_mempool_t *nmp; /* dns_adbname_t */

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_mempool_t *nhmp; /* dns_adbnamehook_t */

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_mempool_t *zimp; /* dns_adbzoneinfo_t */

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_mempool_t *emp; /* dns_adbentry_t */

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_mempool_t *ahmp; /* dns_adbfind_t */

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_mempool_t *aimp; /* dns_adbaddrinfo_t */

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_mempool_t *afmp; /* dns_adbfetch_t */

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_mempool_t *af6mp; /* dns_adbfetch6_t */

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington /*

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_adbnamelist_t names[NBUCKETS];

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_mutex_t namelocks[NBUCKETS];

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_boolean_t name_sd[NBUCKETS];

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington unsigned int name_refcnt[NBUCKETS];

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington /*

6e373c502584f9292e964378411d296c8259026bMark Andrews dns_adbentrylist_t entries[NBUCKETS];

6e373c502584f9292e964378411d296c8259026bMark Andrews isc_mutex_t entrylocks[NBUCKETS];

6e373c502584f9292e964378411d296c8259026bMark Andrews isc_boolean_t entry_sd[NBUCKETS]; /* shutting down */

289ae548d52bc8f982d9823af64cafda7bd92232Mark Andrews unsigned int entry_refcnt[NBUCKETS];

289ae548d52bc8f982d9823af64cafda7bd92232Mark Andrews

289ae548d52bc8f982d9823af64cafda7bd92232Mark Andrews isc_event_t cevent;

289ae548d52bc8f982d9823af64cafda7bd92232Mark Andrews isc_boolean_t cevent_sent;

289ae548d52bc8f982d9823af64cafda7bd92232Mark Andrews isc_boolean_t shutting_down;

289ae548d52bc8f982d9823af64cafda7bd92232Mark Andrews isc_eventlist_t whenshutdown;

289ae548d52bc8f982d9823af64cafda7bd92232Mark Andrews};

289ae548d52bc8f982d9823af64cafda7bd92232Mark Andrews

92f60809e854ccf5f115883c6347e370da048848Mark Andrews

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtonstruct dns_adbname {

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington unsigned int magic;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_name_t name;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_adb_t *adb;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington unsigned int partial_result;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington unsigned int flags;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington int lock_bucket;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_name_t target;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_stdtime_t expire_target;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_stdtime_t expire_v4;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_stdtime_t expire_v6;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington unsigned int chains;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_adbnamehooklist_t v4;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_adbnamehooklist_t v6;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_adbfetch_t *fetch_a;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_adbfetch_t *fetch_aaaa;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington ISC_LIST(dns_adbfetch6_t) fetches_a6;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington unsigned int fetch_err;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington unsigned int fetch6_err;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_adbfindlist_t finds;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington ISC_LINK(dns_adbname_t) plink;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington};

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtonstruct dns_adbfetch {

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington unsigned int magic;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_adbnamehook_t *namehook;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_adbentry_t *entry;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_fetch_t *fetch;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_rdataset_t rdataset;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington};

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtonstruct dns_adbfetch6 {

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington unsigned int magic;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington unsigned int flags;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_adbnamehook_t *namehook;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_adbentry_t *entry;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_fetch_t *fetch;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_rdataset_t rdataset;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_a6context_t a6ctx;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington ISC_LINK(dns_adbfetch6_t) plink;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington};

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtonstruct dns_adbnamehook {

4e1d3e67cdc76609bad5f0310ac48de10b442b9fMark Andrews unsigned int magic;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_adbentry_t *entry;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington ISC_LINK(dns_adbnamehook_t) plink;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington};

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtonstruct dns_adbzoneinfo {

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington unsigned int magic;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_name_t zone;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_stdtime_t lame_timer;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington ISC_LINK(dns_adbzoneinfo_t) plink;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington};

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtonstruct dns_adbentry {

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington unsigned int magic;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington int lock_bucket;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington unsigned int refcnt;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington unsigned int flags;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington unsigned int srtt;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_sockaddr_t sockaddr;

ab023a65562e62b85a824509d829b6fad87e00b1Rob Austein

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_stdtime_t expires;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington /*

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington ISC_LIST(dns_adbzoneinfo_t) zoneinfo;

6889d57aabc5f48eaee78894e20054215319b461Andreas Gustafsson ISC_LINK(dns_adbentry_t) plink;

6889d57aabc5f48eaee78894e20054215319b461Andreas Gustafsson};

ab023a65562e62b85a824509d829b6fad87e00b1Rob Austein

d5e72d5dba7b77ae0036c53578bcabcf3af1f4b7Andreas Gustafssonstatic inline dns_adbname_t *new_adbname(dns_adb_t *, dns_name_t *);

d5e72d5dba7b77ae0036c53578bcabcf3af1f4b7Andreas Gustafssonstatic inline void free_adbname(dns_adb_t *, dns_adbname_t **);

d5e72d5dba7b77ae0036c53578bcabcf3af1f4b7Andreas Gustafssonstatic inline dns_adbnamehook_t *new_adbnamehook(dns_adb_t *,

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafsson dns_adbentry_t *);

2f012d936b5ccdf6520c96a4de23721dc58a2221Automatic Updaterstatic inline void free_adbnamehook(dns_adb_t *, dns_adbnamehook_t **);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic inline dns_adbzoneinfo_t *new_adbzoneinfo(dns_adb_t *, dns_name_t *);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic inline void free_adbzoneinfo(dns_adb_t *, dns_adbzoneinfo_t **);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic inline dns_adbentry_t *new_adbentry(dns_adb_t *);

2f012d936b5ccdf6520c96a4de23721dc58a2221Automatic Updaterstatic inline void free_adbentry(dns_adb_t *, dns_adbentry_t **);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic inline dns_adbfind_t *new_adbfind(dns_adb_t *);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic inline isc_boolean_t free_adbfind(dns_adb_t *, dns_adbfind_t **);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic inline dns_adbaddrinfo_t *new_adbaddrinfo(dns_adb_t *, dns_adbentry_t *,

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafsson in_port_t);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic inline dns_adbfetch_t *new_adbfetch(dns_adb_t *);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic inline void free_adbfetch(dns_adb_t *, dns_adbfetch_t **);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic inline dns_adbfetch6_t *new_adbfetch6(dns_adb_t *, dns_adbname_t *,

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafsson dns_a6context_t *);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic inline void free_adbfetch6(dns_adb_t *, dns_adbfetch6_t **);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic inline dns_adbname_t *find_name_and_lock(dns_adb_t *, dns_name_t *,

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafsson unsigned int, int *);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic inline dns_adbentry_t *find_entry_and_lock(dns_adb_t *,

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafsson isc_sockaddr_t *, int *);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic void dump_adb(dns_adb_t *, FILE *, isc_boolean_t debug);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic void print_dns_name(FILE *, dns_name_t *);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic void print_namehook_list(FILE *, const char *legend,

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafsson dns_adbnamehooklist_t *list,

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafsson isc_boolean_t debug,

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafsson isc_stdtime_t now);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic void print_find_list(FILE *, dns_adbname_t *);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic void print_fetch_list(FILE *, dns_adbname_t *);

ab023a65562e62b85a824509d829b6fad87e00b1Rob Austeinstatic inline isc_boolean_t dec_adb_irefcnt(dns_adb_t *);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic inline void inc_adb_irefcnt(dns_adb_t *);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic inline void inc_adb_erefcnt(dns_adb_t *);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic inline void inc_entry_refcnt(dns_adb_t *, dns_adbentry_t *,

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafsson isc_boolean_t);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic inline isc_boolean_t dec_entry_refcnt(dns_adb_t *, dns_adbentry_t *,

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafsson isc_boolean_t);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic inline void violate_locking_hierarchy(isc_mutex_t *, isc_mutex_t *);

d5e72d5dba7b77ae0036c53578bcabcf3af1f4b7Andreas Gustafssonstatic isc_boolean_t clean_namehooks(dns_adb_t *, dns_adbnamehooklist_t *);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic void clean_target(dns_adb_t *, dns_name_t *);

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafssonstatic void clean_finds_at_name(dns_adbname_t *, isc_eventtype_t,

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafsson unsigned int);

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrewsstatic isc_boolean_t check_expire_namehooks(dns_adbname_t *, isc_stdtime_t,

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrews isc_boolean_t);

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrewsstatic void cancel_fetches_at_name(dns_adbname_t *);

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrewsstatic isc_result_t dbfind_name(dns_adbname_t *, isc_stdtime_t,

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrews dns_rdatatype_t);

1cf54d1966b3de8f6593e9e80eae9a80a1c011adMark Andrewsstatic isc_result_t fetch_name_v4(dns_adbname_t *, isc_boolean_t);

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrewsstatic isc_result_t fetch_name_aaaa(dns_adbname_t *);

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrewsstatic isc_result_t fetch_name_a6(dns_adbname_t *, isc_boolean_t);

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrewsstatic inline void check_exit(dns_adb_t *);

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrewsstatic void timer_cleanup(isc_task_t *, isc_event_t *);

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrewsstatic void destroy(dns_adb_t *);

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrewsstatic isc_boolean_t shutdown_names(dns_adb_t *);

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrewsstatic isc_boolean_t shutdown_entries(dns_adb_t *);

1cf54d1966b3de8f6593e9e80eae9a80a1c011adMark Andrewsstatic inline void link_name(dns_adb_t *, int, dns_adbname_t *);

1cf54d1966b3de8f6593e9e80eae9a80a1c011adMark Andrewsstatic inline isc_boolean_t unlink_name(dns_adb_t *, dns_adbname_t *);

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrewsstatic inline void link_entry(dns_adb_t *, int, dns_adbentry_t *);

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrewsstatic inline isc_boolean_t unlink_entry(dns_adb_t *, dns_adbentry_t *);

3ddd814a97de1d152ba0913c592d6e6dc83d38a6Michael Graffstatic isc_boolean_t kill_name(dns_adbname_t **, isc_eventtype_t);

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrewsstatic void fetch_callback_a6(isc_task_t *, isc_event_t *);

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrewsstatic isc_result_t dbfind_a6(dns_adbname_t *, isc_stdtime_t);

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrewsstatic void water(void *arg, int mark);

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson

de9833be77ef92c17b35c02d138a0ad8df34dd91Mark Andrews#define FIND_EVENT_SENT 0x40000000

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrews#define FIND_EVENT_FREED 0x80000000

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrews#define FIND_EVENTSENT(h) (((h)->flags & FIND_EVENT_SENT) != 0)

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrews#define FIND_EVENTFREED(h) (((h)->flags & FIND_EVENT_FREED) != 0)

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrews

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson#define NAME_NEEDS_POKE 0x80000000

0015ab097438e041197b19b9de2ba48f6bfd1c6cDavid Lawrence#define NAME_IS_DEAD 0x40000000

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define NAME_HINT_OK DNS_ADBFIND_HINTOK

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define NAME_GLUE_OK DNS_ADBFIND_GLUEOK

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define NAME_STARTATROOT DNS_ADBFIND_STARTATROOT

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafsson#define NAME_DEAD(n) (((n)->flags & NAME_IS_DEAD) != 0)

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafsson#define NAME_NEEDSPOKE(n) (((n)->flags & NAME_NEEDS_POKE) != 0)

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafsson#define NAME_GLUEOK(n) (((n)->flags & NAME_GLUE_OK) != 0)

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafsson#define NAME_HINTOK(n) (((n)->flags & NAME_HINT_OK) != 0)

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafsson

87f4715d6c0a22f3449eb3291c91aa45ba86c955Mark Andrews#define NAME_HAS_V4(n) (!ISC_LIST_EMPTY((n)->v4))

476386968b1f287a695f73c48862e961011af99bMark Andrews#define NAME_HAS_V6(n) (!ISC_LIST_EMPTY((n)->v6))

476386968b1f287a695f73c48862e961011af99bMark Andrews#define NAME_HAS_ADDRS(n) (NAME_HAS_V4(n) || NAME_HAS_V6(n))

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrews

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define NAME_FETCH_A(n) ((n)->fetch_a != NULL)

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define NAME_FETCH_AAAA(n) ((n)->fetch_aaaa != NULL)

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define NAME_FETCH_A6(n) (!ISC_LIST_EMPTY((n)->fetches_a6))

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define NAME_FETCH_V4(n) (NAME_FETCH_A(n))

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define NAME_FETCH_V6(n) (NAME_FETCH_AAAA(n) || NAME_FETCH_A6(n))

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define NAME_FETCH(n) (NAME_FETCH_V4(n) || NAME_FETCH_V6(n))

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define FETCH_FIRST_A6 0x80000000

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define FETCH_FIRSTA6(f) (((f)->flags & FETCH_FIRST_A6) != 0)

de9833be77ef92c17b35c02d138a0ad8df34dd91Mark Andrews

de9833be77ef92c17b35c02d138a0ad8df34dd91Mark Andrews#define FIND_WANTEVENT(fn) (((fn)->options & DNS_ADBFIND_WANTEVENT) != 0)

de9833be77ef92c17b35c02d138a0ad8df34dd91Mark Andrews#define FIND_WANTEMPTYEVENT(fn) (((fn)->options & DNS_ADBFIND_EMPTYEVENT) != 0)

de9833be77ef92c17b35c02d138a0ad8df34dd91Mark Andrews#define FIND_AVOIDFETCHES(fn) (((fn)->options & DNS_ADBFIND_AVOIDFETCHES) \

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson != 0)

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson#define FIND_STARTATROOT(fn) (((fn)->options & DNS_ADBFIND_STARTATROOT) \

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson != 0)

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson#define FIND_HINTOK(fn) (((fn)->options & DNS_ADBFIND_HINTOK) != 0)

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define FIND_GLUEOK(fn) (((fn)->options & DNS_ADBFIND_GLUEOK) != 0)

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson#define FIND_HAS_ADDRS(fn) (!ISC_LIST_EMPTY((fn)->list))

de9833be77ef92c17b35c02d138a0ad8df34dd91Mark Andrews#define FIND_RETURNLAME(fn) (((fn)->options & DNS_ADBFIND_RETURNLAME) != 0)

de9833be77ef92c17b35c02d138a0ad8df34dd91Mark Andrews

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define WANT_INET(x) (((x) & DNS_ADBFIND_INET) != 0)

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define WANT_INET6(x) (((x) & DNS_ADBFIND_INET6) != 0)

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define EXPIRE_OK(exp, now) ((exp == INT_MAX) || (exp < now))

4e1d3e67cdc76609bad5f0310ac48de10b442b9fMark Andrews

4e1d3e67cdc76609bad5f0310ac48de10b442b9fMark Andrews#define GLUE_OK(nf, o) (!NAME_GLUEOK(nf) || (((o) & DNS_ADBFIND_GLUEOK) != 0))

4e1d3e67cdc76609bad5f0310ac48de10b442b9fMark Andrews#define HINT_OK(nf, o) (!NAME_HINTOK(nf) || (((o) & DNS_ADBFIND_HINTOK) != 0))

4e1d3e67cdc76609bad5f0310ac48de10b442b9fMark Andrews#define GLUEHINT_OK(nf, o) (GLUE_OK(nf, o) || HINT_OK(nf, o))

4e1d3e67cdc76609bad5f0310ac48de10b442b9fMark Andrews#define STARTATROOT_MATCHES(nf, o) (((nf)->flags & NAME_STARTATROOT) == \

4e1d3e67cdc76609bad5f0310ac48de10b442b9fMark Andrews ((o) & DNS_ADBFIND_STARTATROOT))

4e1d3e67cdc76609bad5f0310ac48de10b442b9fMark Andrews

4e1d3e67cdc76609bad5f0310ac48de10b442b9fMark Andrews#define ENTER_LEVEL ISC_LOG_DEBUG(50)

8249eee42adc8c9c06c6ff9aaecc7437e259c687Mark Andrews#define EXIT_LEVEL ENTER_LEVEL

8249eee42adc8c9c06c6ff9aaecc7437e259c687Mark Andrews#define CLEAN_LEVEL ISC_LOG_DEBUG(100)

8249eee42adc8c9c06c6ff9aaecc7437e259c687Mark Andrews#define DEF_LEVEL ISC_LOG_DEBUG(5)

8249eee42adc8c9c06c6ff9aaecc7437e259c687Mark Andrews#define NCACHE_LEVEL ISC_LOG_DEBUG(20)

8249eee42adc8c9c06c6ff9aaecc7437e259c687Mark Andrews

4e1d3e67cdc76609bad5f0310ac48de10b442b9fMark Andrews#define NCACHE_RESULT(r) ((r) == DNS_R_NCACHENXDOMAIN || \

886b96ebfd555cfeaf37ae46fc08421a41c61392Andreas Gustafsson (r) == DNS_R_NCACHENXRRSET)

4e1d3e67cdc76609bad5f0310ac48de10b442b9fMark Andrews#define AUTH_NX(r) ((r) == DNS_R_NXDOMAIN || \

4e1d3e67cdc76609bad5f0310ac48de10b442b9fMark Andrews (r) == DNS_R_NXRRSET)

4e1d3e67cdc76609bad5f0310ac48de10b442b9fMark Andrews#define NXDOMAIN_RESULT(r) ((r) == DNS_R_NXDOMAIN || \

4e1d3e67cdc76609bad5f0310ac48de10b442b9fMark Andrews (r) == DNS_R_NCACHENXDOMAIN)

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson#define NXRRSET_RESULT(r) ((r) == DNS_R_NCACHENXRRSET || \

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington (r) == DNS_R_NXRRSET || \

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington (r) == DNS_R_HINTNXRRSET)

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

a903095bf4512dae561c7f6fc7854a51bebf334aMark Andrews

a903095bf4512dae561c7f6fc7854a51bebf334aMark Andrews#define FIND_ERR_SUCCESS 0 /* highest rank */

a903095bf4512dae561c7f6fc7854a51bebf334aMark Andrews#define FIND_ERR_CANCELED 1

4e1d3e67cdc76609bad5f0310ac48de10b442b9fMark Andrews#define FIND_ERR_FAILURE 2

a903095bf4512dae561c7f6fc7854a51bebf334aMark Andrews#define FIND_ERR_NXDOMAIN 3

a903095bf4512dae561c7f6fc7854a51bebf334aMark Andrews#define FIND_ERR_NXRRSET 4

a903095bf4512dae561c7f6fc7854a51bebf334aMark Andrews#define FIND_ERR_UNEXPECTED 5

a903095bf4512dae561c7f6fc7854a51bebf334aMark Andrews#define FIND_ERR_NOTFOUND 6

a903095bf4512dae561c7f6fc7854a51bebf334aMark Andrews#define FIND_ERR_MAX 7

a903095bf4512dae561c7f6fc7854a51bebf334aMark Andrews

a903095bf4512dae561c7f6fc7854a51bebf334aMark Andrewsstatic const char *errnames[] = {

a903095bf4512dae561c7f6fc7854a51bebf334aMark Andrews "success",

a903095bf4512dae561c7f6fc7854a51bebf334aMark Andrews "canceled",

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson "failure",

207f0a15bb486d8dc27cf5ff963fac6068ee2972Mark Andrews "nxdomain",

207f0a15bb486d8dc27cf5ff963fac6068ee2972Mark Andrews "nxrrset",

207f0a15bb486d8dc27cf5ff963fac6068ee2972Mark Andrews "unexpected",

207f0a15bb486d8dc27cf5ff963fac6068ee2972Mark Andrews "not_found"

207f0a15bb486d8dc27cf5ff963fac6068ee2972Mark Andrews};

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington#define NEWERR(old, new) (ISC_MIN((old), (new)))

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

8249eee42adc8c9c06c6ff9aaecc7437e259c687Mark Andrewsstatic isc_result_t find_err_map[FIND_ERR_MAX] = {

8249eee42adc8c9c06c6ff9aaecc7437e259c687Mark Andrews ISC_R_SUCCESS,

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson ISC_R_CANCELED,

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson ISC_R_FAILURE,

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson DNS_R_NXDOMAIN,

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington DNS_R_NXRRSET,

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington ISC_R_UNEXPECTED,

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson ISC_R_NOTFOUND /* not YET found */

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson};

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtonstatic void

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian WellingtonDP(int level, const char *format, ...) ISC_FORMAT_PRINTF(2, 3);

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtonstatic void

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian WellingtonDP(int level, const char *format, ...) {

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington va_list args;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington va_start(args, format);

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_log_vwrite(dns_lctx,

4e1d3e67cdc76609bad5f0310ac48de10b442b9fMark Andrews DNS_LOGCATEGORY_DATABASE, DNS_LOGMODULE_ADB,

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington level, format, args);

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington va_end(args);

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington}

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtonstatic inline dns_ttl_t

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtonttlclamp(dns_ttl_t ttl) {

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington if (ttl < ADB_CACHE_MINIMUM)

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington ttl = ADB_CACHE_MINIMUM;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington if (ttl > ADB_CACHE_MAXIMUM)

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington ttl = ADB_CACHE_MAXIMUM;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

dcd12febbd47f5846d6c75f6a4dcba8a873bc153Andreas Gustafsson return (ttl);

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson}

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafssonstatic isc_result_t

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafssonimport_rdataset(dns_adbname_t *adbname, dns_rdataset_t *rdataset,

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson isc_stdtime_t now)

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson{

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_result_t result;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_adb_t *adb;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_adbnamehook_t *nh;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_rdata_t rdata = DNS_RDATA_INIT;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington struct in_addr ina;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington struct in6_addr in6a;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_sockaddr_t sockaddr;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_adbentry_t *foundentry; /* NO CLEAN UP! */

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington int addr_bucket;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_boolean_t new_addresses_added;

4e1d3e67cdc76609bad5f0310ac48de10b442b9fMark Andrews dns_rdatatype_t rdtype;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington unsigned int findoptions;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

3b1fce680f1dbe9467cd3b0ab3138ea52d5a976fMark Andrews INSIST(DNS_ADBNAME_VALID(adbname));

3b1fce680f1dbe9467cd3b0ab3138ea52d5a976fMark Andrews adb = adbname->adb;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington INSIST(DNS_ADB_VALID(adb));

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington rdtype = rdataset->type;

ef653fbdb122e9e251bdfbdd4609d03a208bb79dMichael Graff INSIST((rdtype == dns_rdatatype_a) || (rdtype == dns_rdatatype_aaaa));

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson if (rdtype == dns_rdatatype_a)

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington findoptions = DNS_ADBFIND_INET;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington else

7e0d7323d73f31ceb678879ad3aca873dc382483Brian Wellington findoptions = DNS_ADBFIND_INET6;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

023dd2cfe0029002f5e5066ce0cc586b7b703376Mark Andrews addr_bucket = DNS_ADB_INVALIDBUCKET;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington new_addresses_added = ISC_FALSE;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington nh = NULL;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington result = dns_rdataset_first(rdataset);

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington while (result == ISC_R_SUCCESS) {

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_rdata_reset(&rdata);

023dd2cfe0029002f5e5066ce0cc586b7b703376Mark Andrews dns_rdataset_current(rdataset, &rdata);

7e0d7323d73f31ceb678879ad3aca873dc382483Brian Wellington if (rdtype == dns_rdatatype_a) {

7e0d7323d73f31ceb678879ad3aca873dc382483Brian Wellington INSIST(rdata.length == 4);

7e0d7323d73f31ceb678879ad3aca873dc382483Brian Wellington memcpy(&ina.s_addr, rdata.data, 4);

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson isc_sockaddr_fromin(&sockaddr, &ina, 0);

40f53fa8d9c6a4fc38c0014495e7a42b08f52481David Lawrence } else {

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington INSIST(rdata.length == 16);

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington memcpy(in6a.s6_addr, rdata.data, 16);

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_sockaddr_fromin6(&sockaddr, &in6a, 0);

1f1d36a87b65186d9f89aac7f456ab1fd2a39ef6Andreas Gustafsson }

62700b67eb8abb7d13f9c3c1bc4b60a1477d35d8Mark Andrews

dfd7798d8b870abf03795d8095297a4b982ab6e9Mark Andrews INSIST(nh == NULL);

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington nh = new_adbnamehook(adb, NULL);

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington if (nh == NULL) {

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington adbname->partial_result |= findoptions;

1f1d36a87b65186d9f89aac7f456ab1fd2a39ef6Andreas Gustafsson result = ISC_R_NOMEMORY;

62700b67eb8abb7d13f9c3c1bc4b60a1477d35d8Mark Andrews goto fail;

dfd7798d8b870abf03795d8095297a4b982ab6e9Mark Andrews }

ca84283333d22c64abfbcb87872dd5e6d9172c5aMark Andrews

ca84283333d22c64abfbcb87872dd5e6d9172c5aMark Andrews foundentry = find_entry_and_lock(adb, &sockaddr, &addr_bucket);

ca84283333d22c64abfbcb87872dd5e6d9172c5aMark Andrews if (foundentry == NULL) {

ca84283333d22c64abfbcb87872dd5e6d9172c5aMark Andrews dns_adbentry_t *entry;

ca84283333d22c64abfbcb87872dd5e6d9172c5aMark Andrews

ca84283333d22c64abfbcb87872dd5e6d9172c5aMark Andrews entry = new_adbentry(adb);

3aca8e5bf3740bbcc3bb13dde242d7cc369abb27Mark Andrews if (entry == NULL) {

3aca8e5bf3740bbcc3bb13dde242d7cc369abb27Mark Andrews adbname->partial_result |= findoptions;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington result = ISC_R_NOMEMORY;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington goto fail;

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson }

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson entry->sockaddr = sockaddr;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington entry->refcnt = 1;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington nh->entry = entry;

17dba29ba5db791976e505114baee53a1dde88aaBrian Wellington

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson link_entry(adb, addr_bucket, entry);

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington } else {

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington foundentry->refcnt++;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington nh->entry = foundentry;

17dba29ba5db791976e505114baee53a1dde88aaBrian Wellington }

cc0a5f714231709409b9e1b85f0f97ae50854451Mark Andrews

cc0a5f714231709409b9e1b85f0f97ae50854451Mark Andrews new_addresses_added = ISC_TRUE;

cb8fd52bbeaf40c9166a0144541c4ff2bafc2dd6Andreas Gustafsson if (rdtype == dns_rdatatype_a)

687b7ef9989c9ab9040f4ccb5f1816b96fa4e43fAndreas Gustafsson ISC_LIST_APPEND(adbname->v4, nh, plink);

687b7ef9989c9ab9040f4ccb5f1816b96fa4e43fAndreas Gustafsson else

687b7ef9989c9ab9040f4ccb5f1816b96fa4e43fAndreas Gustafsson ISC_LIST_APPEND(adbname->v6, nh, plink);

687b7ef9989c9ab9040f4ccb5f1816b96fa4e43fAndreas Gustafsson nh = NULL;

687b7ef9989c9ab9040f4ccb5f1816b96fa4e43fAndreas Gustafsson

687b7ef9989c9ab9040f4ccb5f1816b96fa4e43fAndreas Gustafsson result = dns_rdataset_next(rdataset);

687b7ef9989c9ab9040f4ccb5f1816b96fa4e43fAndreas Gustafsson }

687b7ef9989c9ab9040f4ccb5f1816b96fa4e43fAndreas Gustafsson

687b7ef9989c9ab9040f4ccb5f1816b96fa4e43fAndreas Gustafsson fail:

687b7ef9989c9ab9040f4ccb5f1816b96fa4e43fAndreas Gustafsson if (nh != NULL)

687b7ef9989c9ab9040f4ccb5f1816b96fa4e43fAndreas Gustafsson free_adbnamehook(adb, &nh);

687b7ef9989c9ab9040f4ccb5f1816b96fa4e43fAndreas Gustafsson

687b7ef9989c9ab9040f4ccb5f1816b96fa4e43fAndreas Gustafsson if (addr_bucket != DNS_ADB_INVALIDBUCKET)

76d9120dd696209fa1186ea289ea01cd4677782fAndreas Gustafsson UNLOCK(&adb->entrylocks[addr_bucket]);

76d9120dd696209fa1186ea289ea01cd4677782fAndreas Gustafsson

687b7ef9989c9ab9040f4ccb5f1816b96fa4e43fAndreas Gustafsson rdataset->ttl = ttlclamp(rdataset->ttl);

687b7ef9989c9ab9040f4ccb5f1816b96fa4e43fAndreas Gustafsson

cc0a5f714231709409b9e1b85f0f97ae50854451Mark Andrews if (rdtype == dns_rdatatype_a) {

687b7ef9989c9ab9040f4ccb5f1816b96fa4e43fAndreas Gustafsson DP(NCACHE_LEVEL, "expire_v4 set to MIN(%u,%u) import_rdataset",

687b7ef9989c9ab9040f4ccb5f1816b96fa4e43fAndreas Gustafsson adbname->expire_v4, now + rdataset->ttl);

687b7ef9989c9ab9040f4ccb5f1816b96fa4e43fAndreas Gustafsson adbname->expire_v4 = ISC_MIN(adbname->expire_v4,

8cccaeaee13993c49009d3915806c1d0bd03743bAndreas Gustafsson now + rdataset->ttl);

8cccaeaee13993c49009d3915806c1d0bd03743bAndreas Gustafsson } else {

8cccaeaee13993c49009d3915806c1d0bd03743bAndreas Gustafsson DP(NCACHE_LEVEL, "expire_v6 set to MIN(%u,%u) import_rdataset",

8cccaeaee13993c49009d3915806c1d0bd03743bAndreas Gustafsson adbname->expire_v6, now + rdataset->ttl);

1672cff96d0b02badab6f94524e10285dde851fcMark Andrews adbname->expire_v6 = ISC_MIN(adbname->expire_v6,

1672cff96d0b02badab6f94524e10285dde851fcMark Andrews now + rdataset->ttl);

1672cff96d0b02badab6f94524e10285dde851fcMark Andrews }

1672cff96d0b02badab6f94524e10285dde851fcMark Andrews

1672cff96d0b02badab6f94524e10285dde851fcMark Andrews if (new_addresses_added) {

1672cff96d0b02badab6f94524e10285dde851fcMark Andrews /*

1672cff96d0b02badab6f94524e10285dde851fcMark Andrews return (ISC_R_SUCCESS);

1672cff96d0b02badab6f94524e10285dde851fcMark Andrews }

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrews

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrews return (result);

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrews}

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrews

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrewsstatic void

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrewsimport_a6(dns_a6context_t *a6ctx) {

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrews dns_adbname_t *name;

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrews dns_adb_t *adb;

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrews dns_adbnamehook_t *nh;

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrews dns_adbentry_t *foundentry; /* NO CLEAN UP! */

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrews int addr_bucket;

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrews isc_sockaddr_t sockaddr;

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrews

2047977ce2dfcfe3a0fa2d638c3242841310fad3Mark Andrews name = a6ctx->arg;

48f929d315bafeeffe0a37082ab4c9661a928c39Mark Andrews INSIST(DNS_ADBNAME_VALID(name));

48f929d315bafeeffe0a37082ab4c9661a928c39Mark Andrews adb = name->adb;

48f929d315bafeeffe0a37082ab4c9661a928c39Mark Andrews INSIST(DNS_ADB_VALID(adb));

48f929d315bafeeffe0a37082ab4c9661a928c39Mark Andrews

48f929d315bafeeffe0a37082ab4c9661a928c39Mark Andrews addr_bucket = DNS_ADB_INVALIDBUCKET;

48f929d315bafeeffe0a37082ab4c9661a928c39Mark Andrews

2c15fcdeac4c2402258867fbac24d7475ef98259Mark Andrews DP(ENTER_LEVEL, "ENTER: import_a6() name %p", name);

2c15fcdeac4c2402258867fbac24d7475ef98259Mark Andrews

2c15fcdeac4c2402258867fbac24d7475ef98259Mark Andrews nh = new_adbnamehook(adb, NULL);

2f012d936b5ccdf6520c96a4de23721dc58a2221Automatic Updater if (nh == NULL) {

2c15fcdeac4c2402258867fbac24d7475ef98259Mark Andrews name->partial_result |= DNS_ADBFIND_INET6; /* clear for AAAA */

a1bc94109313bf4ebb6e6ff655d71d45582d2e43Mark Andrews goto fail;

a1bc94109313bf4ebb6e6ff655d71d45582d2e43Mark Andrews }

a1bc94109313bf4ebb6e6ff655d71d45582d2e43Mark Andrews

a1bc94109313bf4ebb6e6ff655d71d45582d2e43Mark Andrews isc_sockaddr_fromin6(&sockaddr, &a6ctx->in6addr, 0);

a1bc94109313bf4ebb6e6ff655d71d45582d2e43Mark Andrews

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson foundentry = find_entry_and_lock(adb, &sockaddr, &addr_bucket);

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson if (foundentry == NULL) {

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson dns_adbentry_t *entry;

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson entry = new_adbentry(adb);

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson if (entry == NULL) {

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson name->partial_result |= DNS_ADBFIND_INET6;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington goto fail;

9c566a852f31c3a5d0b9d6eaf11463114339c01dAndreas Gustafsson }

80dd46d7aab16c42a8c1acf6156c95406a9f20a4Mark Andrews

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington entry->sockaddr = sockaddr;

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson entry->refcnt = 1;

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson nh->entry = entry;

2f012d936b5ccdf6520c96a4de23721dc58a2221Automatic Updater link_entry(adb, addr_bucket, entry);

9c566a852f31c3a5d0b9d6eaf11463114339c01dAndreas Gustafsson } else {

9c566a852f31c3a5d0b9d6eaf11463114339c01dAndreas Gustafsson foundentry->refcnt++;

9c566a852f31c3a5d0b9d6eaf11463114339c01dAndreas Gustafsson nh->entry = foundentry;

9c566a852f31c3a5d0b9d6eaf11463114339c01dAndreas Gustafsson }

9c566a852f31c3a5d0b9d6eaf11463114339c01dAndreas Gustafsson

9c566a852f31c3a5d0b9d6eaf11463114339c01dAndreas Gustafsson ISC_LIST_APPEND(name->v6, nh, plink);

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington nh = NULL;

2f012d936b5ccdf6520c96a4de23721dc58a2221Automatic Updater

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington fail:

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington DP(NCACHE_LEVEL, "expire_v6 set to MIN(%u,%u) in import_v6",

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington name->expire_v6, a6ctx->expiration);

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington name->expire_v6 = ISC_MIN(name->expire_v6, a6ctx->expiration);

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews name->flags |= NAME_NEEDS_POKE;

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews if (nh != NULL)

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews free_adbnamehook(adb, &nh);

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews if (addr_bucket != DNS_ADB_INVALIDBUCKET)

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews UNLOCK(&adb->entrylocks[addr_bucket]);

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews}

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrewsstatic isc_boolean_t

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrewskill_name(dns_adbname_t **n, isc_eventtype_t ev) {

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews dns_adbname_t *name;

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews isc_boolean_t result = ISC_FALSE;

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews isc_boolean_t result4, result6;

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews dns_adb_t *adb;

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews INSIST(n != NULL);

a5c077e40c784cf9e25c95a1ab94db2faab04ae9Brian Wellington name = *n;

a5c077e40c784cf9e25c95a1ab94db2faab04ae9Brian Wellington *n = NULL;

a5c077e40c784cf9e25c95a1ab94db2faab04ae9Brian Wellington INSIST(DNS_ADBNAME_VALID(name));

a5c077e40c784cf9e25c95a1ab94db2faab04ae9Brian Wellington adb = name->adb;

a5c077e40c784cf9e25c95a1ab94db2faab04ae9Brian Wellington INSIST(DNS_ADB_VALID(adb));

a5c077e40c784cf9e25c95a1ab94db2faab04ae9Brian Wellington

a5c077e40c784cf9e25c95a1ab94db2faab04ae9Brian Wellington DP(DEF_LEVEL, "killing name %p", name);

a5c077e40c784cf9e25c95a1ab94db2faab04ae9Brian Wellington

a5c077e40c784cf9e25c95a1ab94db2faab04ae9Brian Wellington /*

a5c077e40c784cf9e25c95a1ab94db2faab04ae9Brian Wellington if (NAME_DEAD(name) && !NAME_FETCH(name)) {

c5223c9cb7c22620d5ee6611228673e95b48a270Mark Andrews result = unlink_name(adb, name);

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews free_adbname(adb, &name);

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews if (result)

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews result = dec_adb_irefcnt(adb);

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews return (result);

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews }

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews /*

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews clean_finds_at_name(name, ev, DNS_ADBFIND_ADDRESSMASK);

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews result4 = clean_namehooks(adb, &name->v4);

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews result6 = clean_namehooks(adb, &name->v6);

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews clean_target(adb, &name->target);

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews result = ISC_TF(result4 || result6);

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews /*

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews if (!NAME_FETCH(name)) {

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews INSIST(result == ISC_FALSE);

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews result = unlink_name(adb, name);

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews free_adbname(adb, &name);

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews if (result)

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews result = dec_adb_irefcnt(adb);

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews } else {

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews name->flags |= NAME_IS_DEAD;

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews cancel_fetches_at_name(name);

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews }

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews return (result);

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews}

3f42cf2f3e4dc7e740b4609ba7d7430292348f2bMark Andrews

508f61f8d699c46f962b682f388e54b446a7194dMark Andrewsstatic isc_boolean_t

508f61f8d699c46f962b682f388e54b446a7194dMark Andrewscheck_expire_namehooks(dns_adbname_t *name, isc_stdtime_t now,

508f61f8d699c46f962b682f388e54b446a7194dMark Andrews isc_boolean_t overmem)

508f61f8d699c46f962b682f388e54b446a7194dMark Andrews{

c5223c9cb7c22620d5ee6611228673e95b48a270Mark Andrews dns_adb_t *adb;

c5223c9cb7c22620d5ee6611228673e95b48a270Mark Andrews isc_boolean_t expire;

c5223c9cb7c22620d5ee6611228673e95b48a270Mark Andrews isc_boolean_t result4 = ISC_FALSE;

c5223c9cb7c22620d5ee6611228673e95b48a270Mark Andrews isc_boolean_t result6 = ISC_FALSE;

c5223c9cb7c22620d5ee6611228673e95b48a270Mark Andrews

c5223c9cb7c22620d5ee6611228673e95b48a270Mark Andrews INSIST(DNS_ADBNAME_VALID(name));

c5223c9cb7c22620d5ee6611228673e95b48a270Mark Andrews adb = name->adb;

c5223c9cb7c22620d5ee6611228673e95b48a270Mark Andrews INSIST(DNS_ADB_VALID(adb));

c5223c9cb7c22620d5ee6611228673e95b48a270Mark Andrews

c5223c9cb7c22620d5ee6611228673e95b48a270Mark Andrews if (overmem) {

c5223c9cb7c22620d5ee6611228673e95b48a270Mark Andrews isc_uint32_t val;

c5223c9cb7c22620d5ee6611228673e95b48a270Mark Andrews

c5223c9cb7c22620d5ee6611228673e95b48a270Mark Andrews isc_random_get(&val);

c5223c9cb7c22620d5ee6611228673e95b48a270Mark Andrews

c5223c9cb7c22620d5ee6611228673e95b48a270Mark Andrews expire = ISC_TF((val % 4) == 0);

c5223c9cb7c22620d5ee6611228673e95b48a270Mark Andrews } else

c5223c9cb7c22620d5ee6611228673e95b48a270Mark Andrews expire = ISC_FALSE;

2c15fcdeac4c2402258867fbac24d7475ef98259Mark Andrews

c5223c9cb7c22620d5ee6611228673e95b48a270Mark Andrews /*

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews if (!NAME_FETCH_V4(name) &&

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews (expire || EXPIRE_OK(name->expire_v4, now))) {

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews if (NAME_HAS_V4(name)) {

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews DP(DEF_LEVEL, "expiring v4 for name %p", name);

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews result4 = clean_namehooks(adb, &name->v4);

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews name->partial_result &= ~DNS_ADBFIND_INET;

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews }

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews name->expire_v4 = INT_MAX;

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews name->fetch_err = FIND_ERR_UNEXPECTED;

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews }

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews /*

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews if (!NAME_FETCH_V6(name) &&

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews (expire || EXPIRE_OK(name->expire_v6, now))) {

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews if (NAME_HAS_V6(name)) {

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews DP(DEF_LEVEL, "expiring v6 for name %p", name);

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews result6 = clean_namehooks(adb, &name->v6);

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews name->partial_result &= ~DNS_ADBFIND_INET6;

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews }

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews name->expire_v6 = INT_MAX;

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews name->fetch6_err = FIND_ERR_UNEXPECTED;

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews }

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews /*

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews if (expire || EXPIRE_OK(name->expire_target, now)) {

dc6da18ccbb808d21f123cc6bda399b44ad11445Mark Andrews clean_target(adb, &name->target);

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson name->expire_target = INT_MAX;

6fcfd0c35d3fd6aea3d36ad002b68e59ac62fdc7Brian Wellington }

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson return (ISC_TF(result4 || result6));

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson}

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson

2674e1a455d4f71de09b2b60e7a8304b9a305588Mark Andrewsstatic inline void

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtonlink_name(dns_adb_t *adb, int bucket, dns_adbname_t *name) {

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington INSIST(name->lock_bucket == DNS_ADB_INVALIDBUCKET);

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington ISC_LIST_PREPEND(adb->names[bucket], name, plink);

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington name->lock_bucket = bucket;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington adb->name_refcnt[bucket]++;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington}

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtonstatic inline isc_boolean_t

a12d9cfa59b5981c52e1aaafedf652d5128f3448Brian Wellingtonunlink_name(dns_adb_t *adb, dns_adbname_t *name) {

6c7e680943ccdb75f23b050a7bc5ac0825e5244aMark Andrews int bucket;

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson isc_boolean_t result = ISC_FALSE;

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson

87f4715d6c0a22f3449eb3291c91aa45ba86c955Mark Andrews bucket = name->lock_bucket;

87f4715d6c0a22f3449eb3291c91aa45ba86c955Mark Andrews INSIST(bucket != DNS_ADB_INVALIDBUCKET);

87f4715d6c0a22f3449eb3291c91aa45ba86c955Mark Andrews

87f4715d6c0a22f3449eb3291c91aa45ba86c955Mark Andrews ISC_LIST_UNLINK(adb->names[bucket], name, plink);

87f4715d6c0a22f3449eb3291c91aa45ba86c955Mark Andrews name->lock_bucket = DNS_ADB_INVALIDBUCKET;

87f4715d6c0a22f3449eb3291c91aa45ba86c955Mark Andrews INSIST(adb->name_refcnt[bucket] > 0);

87f4715d6c0a22f3449eb3291c91aa45ba86c955Mark Andrews adb->name_refcnt[bucket]--;

87f4715d6c0a22f3449eb3291c91aa45ba86c955Mark Andrews if (adb->name_sd[bucket] && adb->name_refcnt[bucket] == 0)

87f4715d6c0a22f3449eb3291c91aa45ba86c955Mark Andrews result = ISC_TRUE;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington return (result);

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington}

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtonstatic inline void

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtonlink_entry(dns_adb_t *adb, int bucket, dns_adbentry_t *entry) {

17dba29ba5db791976e505114baee53a1dde88aaBrian Wellington ISC_LIST_PREPEND(adb->entries[bucket], entry, plink);

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson entry->lock_bucket = bucket;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington adb->entry_refcnt[bucket]++;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington}

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtonstatic inline isc_boolean_t

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellingtonunlink_entry(dns_adb_t *adb, dns_adbentry_t *entry) {

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington int bucket;

cb9aa603ab2d019032e1b7b2d274e69adf0980f8Michael Graff isc_boolean_t result = ISC_FALSE;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington bucket = entry->lock_bucket;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington INSIST(bucket != DNS_ADB_INVALIDBUCKET);

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

cb9aa603ab2d019032e1b7b2d274e69adf0980f8Michael Graff ISC_LIST_UNLINK(adb->entries[bucket], entry, plink);

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington entry->lock_bucket = DNS_ADB_INVALIDBUCKET;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington INSIST(adb->entry_refcnt[bucket] > 0);

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington adb->entry_refcnt[bucket]--;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington if (adb->entry_sd[bucket] && adb->entry_refcnt[bucket] == 0)

cb9aa603ab2d019032e1b7b2d274e69adf0980f8Michael Graff result = ISC_TRUE;

bb60abb44549428414cd55a022f2b8cc4488f7adAndreas Gustafsson return (result);

bb60abb44549428414cd55a022f2b8cc4488f7adAndreas Gustafsson}

bb60abb44549428414cd55a022f2b8cc4488f7adAndreas Gustafsson

1f1d36a87b65186d9f89aac7f456ab1fd2a39ef6Andreas Gustafssonstatic inline void

62700b67eb8abb7d13f9c3c1bc4b60a1477d35d8Mark Andrewsviolate_locking_hierarchy(isc_mutex_t *have, isc_mutex_t *want) {

bb60abb44549428414cd55a022f2b8cc4488f7adAndreas Gustafsson if (isc_mutex_trylock(want) != ISC_R_SUCCESS) {

bb60abb44549428414cd55a022f2b8cc4488f7adAndreas Gustafsson UNLOCK(have);

bb60abb44549428414cd55a022f2b8cc4488f7adAndreas Gustafsson LOCK(want);

bb60abb44549428414cd55a022f2b8cc4488f7adAndreas Gustafsson LOCK(have);

1f1d36a87b65186d9f89aac7f456ab1fd2a39ef6Andreas Gustafsson }

62700b67eb8abb7d13f9c3c1bc4b60a1477d35d8Mark Andrews}

bb60abb44549428414cd55a022f2b8cc4488f7adAndreas Gustafsson

476386968b1f287a695f73c48862e961011af99bMark Andrewsstatic isc_boolean_t

476386968b1f287a695f73c48862e961011af99bMark Andrewsshutdown_names(dns_adb_t *adb) {

476386968b1f287a695f73c48862e961011af99bMark Andrews int bucket;

476386968b1f287a695f73c48862e961011af99bMark Andrews isc_boolean_t result = ISC_FALSE;

476386968b1f287a695f73c48862e961011af99bMark Andrews dns_adbname_t *name;

476386968b1f287a695f73c48862e961011af99bMark Andrews dns_adbname_t *next_name;

476386968b1f287a695f73c48862e961011af99bMark Andrews

476386968b1f287a695f73c48862e961011af99bMark Andrews for (bucket = 0; bucket < NBUCKETS; bucket++) {

476386968b1f287a695f73c48862e961011af99bMark Andrews LOCK(&adb->namelocks[bucket]);

476386968b1f287a695f73c48862e961011af99bMark Andrews adb->name_sd[bucket] = ISC_TRUE;

476386968b1f287a695f73c48862e961011af99bMark Andrews

ce28ea0f2f8a6fbbafb8944dbe86cd0b98689b84Tatuya JINMEI 神明達哉 name = ISC_LIST_HEAD(adb->names[bucket]);

476386968b1f287a695f73c48862e961011af99bMark Andrews if (name == NULL) {

476386968b1f287a695f73c48862e961011af99bMark Andrews /*

476386968b1f287a695f73c48862e961011af99bMark Andrews INSIST(result == ISC_FALSE);

476386968b1f287a695f73c48862e961011af99bMark Andrews result = dec_adb_irefcnt(adb);

476386968b1f287a695f73c48862e961011af99bMark Andrews } else {

476386968b1f287a695f73c48862e961011af99bMark Andrews /*

40f53fa8d9c6a4fc38c0014495e7a42b08f52481David Lawrence while (name != NULL) {

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson next_name = ISC_LIST_NEXT(name, plink);

1adb2e87a20a480e640385609c9652dac04c7dffAndreas Gustafsson INSIST(result == ISC_FALSE);

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson result = kill_name(&name,

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson DNS_EVENT_ADBSHUTDOWN);

419590499823ce15b5d2ad4fe71eaf04bd5a86c0Michael Graff name = next_name;

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson }

6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson }

6889d57aabc5f48eaee78894e20054215319b461Andreas Gustafsson

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrews UNLOCK(&adb->namelocks[bucket]);

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrews }

45e1bd63587102c3bb361eaca42ee7b714fb3542Mark Andrews return (result);

6889d57aabc5f48eaee78894e20054215319b461Andreas Gustafsson}

6889d57aabc5f48eaee78894e20054215319b461Andreas Gustafsson

6889d57aabc5f48eaee78894e20054215319b461Andreas Gustafssonstatic isc_boolean_t

6889d57aabc5f48eaee78894e20054215319b461Andreas Gustafssonshutdown_entries(dns_adb_t *adb) {

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington int bucket;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington isc_boolean_t result = ISC_FALSE;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_adbentry_t *entry;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington dns_adbentry_t *next_entry;

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington

90c099e88e9f16bfee9edee3ac1a51fc98843772Brian Wellington for (bucket = 0; bucket < NBUCKETS; bucket++) {

8bba70c48d74a389a075b9c80837161b4ed91e88Andreas Gustafsson LOCK(&adb->entrylocks[bucket]);

ff4322d44f8404683b6fb6c86a38a2bc14f6c083Andreas Gustafsson adb->entry_sd[bucket] = ISC_TRUE;

0cf9ce19cc05a60f85ec610106a983fe806ebb77Andreas Gustafsson

ff4322d44f8404683b6fb6c86a38a2bc14f6c083Andreas Gustafsson entry = ISC_LIST_HEAD(adb->entries[bucket]);

ff4322d44f8404683b6fb6c86a38a2bc14f6c083Andreas Gustafsson if (entry == NULL) {

6889d57aabc5f48eaee78894e20054215319b461Andreas Gustafsson /*

result = dec_adb_irefcnt(adb);

} else {

/*

while (entry != NULL) {

next_entry = ISC_LIST_NEXT(entry, plink);

if (entry->refcnt == 0 &&

entry->expires != 0) {

result = unlink_entry(adb, entry);

free_adbentry(adb, &entry);

if (result)

result = dec_adb_irefcnt(adb);

}

entry = next_entry;

}

}

UNLOCK(&adb->entrylocks[bucket]);

}

return (result);

}

static void

cancel_fetches_at_name(dns_adbname_t *name) {

dns_adbfetch6_t *fetch6;

if (NAME_FETCH_A(name))

dns_resolver_cancelfetch(name->fetch_a->fetch);

if (NAME_FETCH_AAAA(name))

dns_resolver_cancelfetch(name->fetch_aaaa->fetch);

fetch6 = ISC_LIST_HEAD(name->fetches_a6);

while (fetch6 != NULL) {

dns_resolver_cancelfetch(fetch6->fetch);

fetch6 = ISC_LIST_NEXT(fetch6, plink);

}

}

static isc_boolean_t

clean_namehooks(dns_adb_t *adb, dns_adbnamehooklist_t *namehooks) {

dns_adbentry_t *entry;

dns_adbnamehook_t *namehook;

int addr_bucket;

isc_boolean_t result = ISC_FALSE;

addr_bucket = DNS_ADB_INVALIDBUCKET;

namehook = ISC_LIST_HEAD(*namehooks);

while (namehook != NULL) {

INSIST(DNS_ADBNAMEHOOK_VALID(namehook));

/*

entry = namehook->entry;

if (entry != NULL) {

INSIST(DNS_ADBENTRY_VALID(entry));

if (addr_bucket != entry->lock_bucket) {

if (addr_bucket != DNS_ADB_INVALIDBUCKET)

UNLOCK(&adb->entrylocks[addr_bucket]);

addr_bucket = entry->lock_bucket;

LOCK(&adb->entrylocks[addr_bucket]);

}

result = dec_entry_refcnt(adb, entry, ISC_FALSE);

}

/*

namehook->entry = NULL;

ISC_LIST_UNLINK(*namehooks, namehook, plink);

free_adbnamehook(adb, &namehook);

namehook = ISC_LIST_HEAD(*namehooks);

}

if (addr_bucket != DNS_ADB_INVALIDBUCKET)

UNLOCK(&adb->entrylocks[addr_bucket]);

return (result);

}

static void

clean_target(dns_adb_t *adb, dns_name_t *target) {

if (dns_name_countlabels(target) > 0) {

dns_name_free(target, adb->mctx);

dns_name_init(target, NULL);

}

}

static isc_result_t

set_target(dns_adb_t *adb, dns_name_t *name, dns_name_t *fname,

dns_rdataset_t *rdataset, dns_name_t *target)

{

isc_result_t result;

dns_namereln_t namereln;

unsigned int nlabels, nbits;

int order;

dns_rdata_t rdata = DNS_RDATA_INIT;

dns_fixedname_t fixed1, fixed2;

dns_name_t *prefix, *new_target;

REQUIRE(dns_name_countlabels(target) == 0);

if (rdataset->type == dns_rdatatype_cname) {

dns_rdata_cname_t cname;

/*

result = dns_rdataset_first(rdataset);

if (result != ISC_R_SUCCESS)

return (result);

dns_rdataset_current(rdataset, &rdata);

result = dns_rdata_tostruct(&rdata, &cname, NULL);

if (result != ISC_R_SUCCESS)

return (result);

result = dns_name_dup(&cname.cname, adb->mctx, target);

dns_rdata_freestruct(&cname);

if (result != ISC_R_SUCCESS)

return (result);

} else {

dns_rdata_dname_t dname;

INSIST(rdataset->type == dns_rdatatype_dname);

namereln = dns_name_fullcompare(name, fname, &order,

&nlabels, &nbits);

INSIST(namereln == dns_namereln_subdomain);

/*

result = dns_rdataset_first(rdataset);

if (result != ISC_R_SUCCESS)

return (result);

dns_rdataset_current(rdataset, &rdata);

result = dns_rdata_tostruct(&rdata, &dname, NULL);

if (result != ISC_R_SUCCESS)

return (result);

/*

dns_fixedname_init(&fixed1);

prefix = dns_fixedname_name(&fixed1);

dns_fixedname_init(&fixed2);

new_target = dns_fixedname_name(&fixed2);

result = dns_name_split(name, nlabels, nbits, prefix, NULL);

if (result != ISC_R_SUCCESS) {

dns_rdata_freestruct(&dname);

return (result);

}

result = dns_name_concatenate(prefix, &dname.dname, new_target,

NULL);

dns_rdata_freestruct(&dname);

if (result != ISC_R_SUCCESS)

return (result);

result = dns_name_dup(new_target, adb->mctx, target);

if (result != ISC_R_SUCCESS)

return (result);

}

return (ISC_R_SUCCESS);

}

static void

event_free(isc_event_t *event) {

dns_adbfind_t *find;

INSIST(event != NULL);

find = event->ev_destroy_arg;

INSIST(DNS_ADBFIND_VALID(find));

LOCK(&find->lock);

find->flags |= FIND_EVENT_FREED;

event->ev_destroy_arg = NULL;

UNLOCK(&find->lock);

}

static void

clean_finds_at_name(dns_adbname_t *name, isc_eventtype_t evtype,

unsigned int addrs)

{

isc_event_t *ev;

isc_task_t *task;

dns_adbfind_t *find;

dns_adbfind_t *next_find;

isc_boolean_t process;

unsigned int wanted, notify;

DP(ENTER_LEVEL,

"ENTER clean_finds_at_name, name %p, evtype %08x, addrs %08x",

name, evtype, addrs);

find = ISC_LIST_HEAD(name->finds);

while (find != NULL) {

LOCK(&find->lock);

next_find = ISC_LIST_NEXT(find, plink);

process = ISC_FALSE;

wanted = find->flags & DNS_ADBFIND_ADDRESSMASK;

notify = wanted & addrs;

switch (evtype) {

case DNS_EVENT_ADBMOREADDRESSES:

DP(ISC_LOG_DEBUG(3), "DNS_EVENT_ADBMOREADDRESSES");

if ((notify) != 0) {

find->flags &= ~addrs;

process = ISC_TRUE;

}

break;

case DNS_EVENT_ADBNOMOREADDRESSES:

DP(ISC_LOG_DEBUG(3), "DNS_EVENT_ADBNOMOREADDRESSES");

find->flags &= ~addrs;

wanted = find->flags & DNS_ADBFIND_ADDRESSMASK;

if (wanted == 0)

process = ISC_TRUE;

break;

default:

find->flags &= ~addrs;

process = ISC_TRUE;

}

if (process) {

DP(DEF_LEVEL, "cfan: processing find %p", find);

/*

ISC_LIST_UNLINK(name->finds, find, plink);

find->adbname = NULL;

find->name_bucket = DNS_ADB_INVALIDBUCKET;

INSIST(!FIND_EVENTSENT(find));

ev = &find->event;

task = ev->ev_sender;

ev->ev_sender = find;

find->result_v4 = find_err_map[name->fetch_err];

find->result_v6 = find_err_map[name->fetch6_err];

ev->ev_type = evtype;

ev->ev_destroy = event_free;

ev->ev_destroy_arg = find;

DP(DEF_LEVEL,

"sending event %p to task %p for find %p",

ev, task, find);

isc_task_sendanddetach(&task, (isc_event_t **)&ev);

} else {

DP(DEF_LEVEL, "cfan: skipping find %p", find);

}

UNLOCK(&find->lock);

find = next_find;

}

DP(ENTER_LEVEL, "EXIT clean_finds_at_name, name %p", name);

}

static inline void

check_exit(dns_adb_t *adb) {

isc_event_t *event;

/*

if (adb->shutting_down) {

/*

INSIST(!adb->cevent_sent); /* Sanity check. */

event = &adb->cevent;

isc_task_send(adb->task, &event);

adb->cevent_sent = ISC_TRUE;

}

}

static inline isc_boolean_t

dec_adb_irefcnt(dns_adb_t *adb) {

isc_event_t *event;

isc_task_t *etask;

isc_boolean_t result = ISC_FALSE;

LOCK(&adb->reflock);

INSIST(adb->irefcnt > 0);

adb->irefcnt--;

if (adb->irefcnt == 0) {

event = ISC_LIST_HEAD(adb->whenshutdown);

while (event != NULL) {

ISC_LIST_UNLINK(adb->whenshutdown, event, ev_link);

etask = event->ev_sender;

event->ev_sender = adb;

isc_task_sendanddetach(&etask, &event);

event = ISC_LIST_HEAD(adb->whenshutdown);

}

}

if (adb->irefcnt == 0 && adb->erefcnt == 0)

result = ISC_TRUE;

UNLOCK(&adb->reflock);

return (result);

}

static inline void

inc_adb_irefcnt(dns_adb_t *adb) {

LOCK(&adb->reflock);

adb->irefcnt++;

UNLOCK(&adb->reflock);

}

static inline void

inc_adb_erefcnt(dns_adb_t *adb) {

LOCK(&adb->reflock);

adb->erefcnt++;

UNLOCK(&adb->reflock);

}

static inline void

inc_entry_refcnt(dns_adb_t *adb, dns_adbentry_t *entry, isc_boolean_t lock) {

int bucket;

bucket = entry->lock_bucket;

if (lock)

LOCK(&adb->entrylocks[bucket]);

entry->refcnt++;

if (lock)

UNLOCK(&adb->entrylocks[bucket]);

}