diff options
author | unknown <ram@mysql.r18.ru> | 2002-10-30 15:57:05 +0400 |
---|---|---|
committer | unknown <ram@mysql.r18.ru> | 2002-10-30 15:57:05 +0400 |
commit | 155e78f014de1a2e259ae5119f4621fbb210a784 (patch) | |
tree | 6881a3cca88bea0bb9eeffd5aae34be437152786 /bdb/db/db_rec.c | |
parent | b8798d25ab71436bf690ee8ae48285a655c5487e (diff) | |
download | mariadb-git-155e78f014de1a2e259ae5119f4621fbb210a784.tar.gz |
BDB 4.1.24
BitKeeper/deleted/.del-ex_access.wpj~3df6ae8c99bf7c5f:
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BitKeeper/deleted/.del-ex_btrec.wpj~a7622f1c6f432dc6:
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BitKeeper/deleted/.del-ex_dbclient.wpj~7345440f3b204cdd:
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BitKeeper/deleted/.del-ex_env.wpj~fbe1ab10b04e8b74:
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BitKeeper/deleted/.del-ex_mpool.wpj~4479cfd5c45f327d:
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BitKeeper/deleted/.del-ex_tpcb.wpj~f78093006e14bf41:
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BitKeeper/deleted/.del-rec_ctemp~a28554362534f00a:
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BitKeeper/deleted/.del-s_tcl~2ffe4326459fcd9f:
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BitKeeper/deleted/.del-.IGNORE_ME~d8148b08fa7d5d15:
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BitKeeper/deleted/.del-db_server_int.h~e1d20b6ba3bca1ab:
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BitKeeper/deleted/.del-db_swap.h~1e60887550864a59:
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BitKeeper/deleted/.del-debug.h~dc2b4f2cf27ccebc:
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BitKeeper/deleted/.del-hash.h~2aaa548b28882dfb:
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BitKeeper/deleted/.del-lock.h~a761c1b7de57b77f:
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BitKeeper/deleted/.del-log.h~ff20184238e35e4d:
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BitKeeper/deleted/.del-mp.h~7e317597622f3411:
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BitKeeper/deleted/.del-mutex.h~d3ae7a2977a68137:
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BitKeeper/deleted/.del-queue.h~4c72c0826c123d5:
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BitKeeper/deleted/.del-region.h~513fe04d977ca0fc:
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BitKeeper/deleted/.del-xa.h~ecc466493aae9d9a:
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BitKeeper/deleted/.del-DbRecoveryInit.java~756b52601a0b9023:
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BitKeeper/deleted/.del-DbTxnRecover.java~74607cba7ab89d6d:
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BitKeeper/deleted/.del-lock_conflict.c~fc5e0f14cf597a2b:
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BitKeeper/deleted/.del-log.src~53ac9e7b5cb023f2:
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BitKeeper/deleted/.del-log_findckp.c~24287f008916e81f:
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BitKeeper/deleted/.del-log_rec.c~d51711f2cac09297:
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BitKeeper/deleted/.del-log_register.c~b40bb4efac75ca15:
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BitKeeper/deleted/.del-Design~b3d0f179f2767b:
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BitKeeper/deleted/.del-os_finit.c~95dbefc6fe79b26c:
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BitKeeper/deleted/.del-os_abs.c~df95d1e7db81924:
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BitKeeper/deleted/.del-os_finit.c~803b484bdb9d0122:
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BitKeeper/deleted/.del-os_map.c~3a6d7926398b76d3:
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BitKeeper/deleted/.del-os_finit.c~19a227c6d3c78ad:
Delete: bdb/os_win32/os_finit.c
BitKeeper/deleted/.del-log-corruption.patch~1cf2ecc7c6408d5d:
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BitKeeper/deleted/.del-Btree.pm~af6d0c5eaed4a98e:
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BitKeeper/deleted/.del-BerkeleyDB.pm~7244036d4482643:
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BitKeeper/deleted/.del-BerkeleyDB.pod~e7b18fd6132448e3:
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BitKeeper/deleted/.del-Hash.pm~10292a26c06a5c95:
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BitKeeper/deleted/.del-BerkeleyDB.pod.P~79f76a1495eda203:
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BitKeeper/deleted/.del-BerkeleyDB.xs~80c99afbd98e392c:
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BitKeeper/deleted/.del-Changes~729c1891efa60de9:
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BitKeeper/deleted/.del-MANIFEST~63a1e34aecf157a0:
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BitKeeper/deleted/.del-Makefile.PL~c68797707d8df87a:
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BitKeeper/deleted/.del-README~5f2f579b1a241407:
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BitKeeper/deleted/.del-Todo~dca3c66c193adda9:
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BitKeeper/deleted/.del-config.in~ae81681e450e0999:
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BitKeeper/deleted/.del-dbinfo~28ad67d83be4f68e:
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BitKeeper/deleted/.del-mkconsts~543ab60669c7a04e:
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BitKeeper/deleted/.del-mkpod~182c0ca54e439afb:
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BitKeeper/deleted/.del-5.004~e008cb5a48805543:
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BitKeeper/deleted/.del-irix_6_5.pl~61662bb08afcdec8:
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BitKeeper/deleted/.del-solaris.pl~6771e7182394e152:
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BitKeeper/deleted/.del-typemap~783b8f5295b05f3d:
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BitKeeper/deleted/.del-5.004_01~6081ce2fff7b0bc:
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BitKeeper/deleted/.del-5.004_02~87214eac35ad9e6:
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BitKeeper/deleted/.del-5.005_03~c4c29a1fb21e290a:
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BitKeeper/deleted/.del-5.6.0~e1fb9897d124ee22:
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BitKeeper/deleted/.del-btree.t~e4a1a3c675ddc406:
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BitKeeper/deleted/.del-db-3.0.t~d2c60991d84558f2:
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BitKeeper/deleted/.del-db-3.1.t~6ee88cd13f55e018:
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BitKeeper/deleted/.del-db-3.2.t~f73b6461f98fd1cf:
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BitKeeper/deleted/.del-destroy.t~cc6a2ae1980a2ecd:
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BitKeeper/deleted/.del-env.t~a8604a4499c4bd07:
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BitKeeper/deleted/.del-examples.t~2571b77c3cc75574:
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BitKeeper/deleted/.del-examples3.t.T~66a186897a87026d:
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BitKeeper/deleted/.del-examples3.t~fe3822ba2f2d7f83:
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BitKeeper/deleted/.del-filter.t~f87b045c1b708637:
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BitKeeper/deleted/.del-hash.t~616bfb4d644de3a3:
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BitKeeper/deleted/.del-join.t~29fc39f74a83ca22:
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BitKeeper/deleted/.del-mldbm.t~31f5015341eea040:
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BitKeeper/deleted/.del-queue.t~8f338034ce44a641:
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BitKeeper/deleted/.del-recno.t~d4ddbd3743add63e:
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BitKeeper/deleted/.del-strict.t~6885cdd2ea71ca2d:
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BitKeeper/deleted/.del-subdb.t~aab62a5d5864c603:
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BitKeeper/deleted/.del-txn.t~65033b8558ae1216:
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BitKeeper/deleted/.del-unknown.t~f3710458682665e1:
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BitKeeper/deleted/.del-Changes~436f74a5c414c65b:
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BitKeeper/deleted/.del-DB_File.pm~ae0951c6c7665a82:
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BitKeeper/deleted/.del-DB_File.xs~89e49a0b5556f1d8:
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BitKeeper/deleted/.del-DB_File_BS~290fad5dbbb87069:
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BitKeeper/deleted/.del-MANIFEST~90ee581572bdd4ac:
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BitKeeper/deleted/.del-Makefile.PL~ac0567bb5a377e38:
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BitKeeper/deleted/.del-README~77e924a5a9bae6b3:
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BitKeeper/deleted/.del-config.in~ab4c2792b86a810b:
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BitKeeper/deleted/.del-dbinfo~461c43b30fab2cb:
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BitKeeper/deleted/.del-dynixptx.pl~50dcddfae25d17e9:
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BitKeeper/deleted/.del-typemap~55cffb3288a9e587:
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BitKeeper/deleted/.del-version.c~a4df0e646f8b3975:
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BitKeeper/deleted/.del-5.004_01~d6830d0082702af7:
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BitKeeper/deleted/.del-db-btree.t~3231595a1c241eb3:
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BitKeeper/deleted/.del-db-hash.t~7c4ad0c795c7fad2:
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BitKeeper/deleted/.del-db-recno.t~6c2d3d80b9ba4a50:
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BitKeeper/deleted/.del-db_server.sed~cdb00ebcd48a64e2:
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BitKeeper/deleted/.del-log.tcl~ff1b41f1355b97d7:
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BitKeeper/deleted/.del-mpool.tcl~b0df4dc1b04db26c:
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Diffstat (limited to 'bdb/db/db_rec.c')
-rw-r--r-- | bdb/db/db_rec.c | 456 |
1 files changed, 412 insertions, 44 deletions
diff --git a/bdb/db/db_rec.c b/bdb/db/db_rec.c index 998d074290d..303ab2fe1d4 100644 --- a/bdb/db/db_rec.c +++ b/bdb/db/db_rec.c @@ -1,14 +1,14 @@ /*- * See the file LICENSE for redistribution information. * - * Copyright (c) 1996, 1997, 1998, 1999, 2000 + * Copyright (c) 1996-2002 * Sleepycat Software. All rights reserved. */ #include "db_config.h" #ifndef lint -static const char revid[] = "$Id: db_rec.c,v 11.10 2000/08/03 15:32:19 ubell Exp $"; +static const char revid[] = "$Id: db_rec.c,v 11.35 2002/08/08 03:57:49 bostic Exp $"; #endif /* not lint */ #ifndef NO_SYSTEM_INCLUDES @@ -18,9 +18,9 @@ static const char revid[] = "$Id: db_rec.c,v 11.10 2000/08/03 15:32:19 ubell Exp #endif #include "db_int.h" -#include "db_page.h" -#include "log.h" -#include "hash.h" +#include "dbinc/db_page.h" +#include "dbinc/log.h" +#include "dbinc/hash.h" /* * PUBLIC: int __db_addrem_recover @@ -45,11 +45,12 @@ __db_addrem_recover(dbenv, dbtp, lsnp, op, info) u_int32_t change; int cmp_n, cmp_p, ret; + pagep = NULL; COMPQUIET(info, NULL); REC_PRINT(__db_addrem_print); REC_INTRO(__db_addrem_read, 1); - if ((ret = memp_fget(mpf, &argp->pgno, 0, &pagep)) != 0) { + if ((ret = mpf->get(mpf, &argp->pgno, 0, &pagep)) != 0) { if (DB_UNDO(op)) { /* * We are undoing and the page doesn't exist. That @@ -59,7 +60,7 @@ __db_addrem_recover(dbenv, dbtp, lsnp, op, info) */ goto done; } else - if ((ret = memp_fget(mpf, + if ((ret = mpf->get(mpf, &argp->pgno, DB_MPOOL_CREATE, &pagep)) != 0) goto out; } @@ -95,13 +96,16 @@ __db_addrem_recover(dbenv, dbtp, lsnp, op, info) LSN(pagep) = argp->pagelsn; } - if ((ret = memp_fput(mpf, pagep, change)) != 0) + if ((ret = mpf->put(mpf, pagep, change)) != 0) goto out; + pagep = NULL; done: *lsnp = argp->prev_lsn; ret = 0; -out: REC_CLOSE; +out: if (pagep != NULL) + (void)mpf->put(mpf, pagep, 0); + REC_CLOSE; } /* @@ -124,11 +128,12 @@ __db_big_recover(dbenv, dbtp, lsnp, op, info) u_int32_t change; int cmp_n, cmp_p, ret; + pagep = NULL; COMPQUIET(info, NULL); REC_PRINT(__db_big_print); REC_INTRO(__db_big_read, 1); - if ((ret = memp_fget(mpf, &argp->pgno, 0, &pagep)) != 0) { + if ((ret = mpf->get(mpf, &argp->pgno, 0, &pagep)) != 0) { if (DB_UNDO(op)) { /* * We are undoing and the page doesn't exist. That @@ -139,7 +144,7 @@ __db_big_recover(dbenv, dbtp, lsnp, op, info) ret = 0; goto ppage; } else - if ((ret = memp_fget(mpf, + if ((ret = mpf->get(mpf, &argp->pgno, DB_MPOOL_CREATE, &pagep)) != 0) goto out; } @@ -161,7 +166,7 @@ __db_big_recover(dbenv, dbtp, lsnp, op, info) argp->next_pgno, 0, P_OVERFLOW); OV_LEN(pagep) = argp->dbt.size; OV_REF(pagep) = 1; - memcpy((u_int8_t *)pagep + P_OVERHEAD, argp->dbt.data, + memcpy((u_int8_t *)pagep + P_OVERHEAD(file_dbp), argp->dbt.data, argp->dbt.size); PREV_PGNO(pagep) = argp->prev_pgno; change = DB_MPOOL_DIRTY; @@ -177,13 +182,21 @@ __db_big_recover(dbenv, dbtp, lsnp, op, info) if (change) LSN(pagep) = DB_REDO(op) ? *lsnp : argp->pagelsn; - if ((ret = memp_fput(mpf, pagep, change)) != 0) + if ((ret = mpf->put(mpf, pagep, change)) != 0) goto out; + pagep = NULL; + + /* + * We only delete a whole chain of overflow. + * Each page is handled individually + */ + if (argp->opcode == DB_REM_BIG) + goto done; /* Now check the previous page. */ ppage: if (argp->prev_pgno != PGNO_INVALID) { change = 0; - if ((ret = memp_fget(mpf, &argp->prev_pgno, 0, &pagep)) != 0) { + if ((ret = mpf->get(mpf, &argp->prev_pgno, 0, &pagep)) != 0) { if (DB_UNDO(op)) { /* * We are undoing and the page doesn't exist. @@ -195,7 +208,7 @@ ppage: if (argp->prev_pgno != PGNO_INVALID) { ret = 0; goto npage; } else - if ((ret = memp_fget(mpf, &argp->prev_pgno, + if ((ret = mpf->get(mpf, &argp->prev_pgno, DB_MPOOL_CREATE, &pagep)) != 0) goto out; } @@ -204,28 +217,27 @@ ppage: if (argp->prev_pgno != PGNO_INVALID) { cmp_p = log_compare(&LSN(pagep), &argp->prevlsn); CHECK_LSN(op, cmp_p, &LSN(pagep), &argp->prevlsn); - if ((cmp_p == 0 && DB_REDO(op) && argp->opcode == DB_ADD_BIG) || - (cmp_n == 0 && DB_UNDO(op) && argp->opcode == DB_REM_BIG)) { + if (cmp_p == 0 && DB_REDO(op) && argp->opcode == DB_ADD_BIG) { /* Redo add, undo delete. */ NEXT_PGNO(pagep) = argp->pgno; change = DB_MPOOL_DIRTY; - } else if ((cmp_n == 0 && - DB_UNDO(op) && argp->opcode == DB_ADD_BIG) || - (cmp_p == 0 && DB_REDO(op) && argp->opcode == DB_REM_BIG)) { + } else if (cmp_n == 0 && + DB_UNDO(op) && argp->opcode == DB_ADD_BIG) { /* Redo delete, undo add. */ NEXT_PGNO(pagep) = argp->next_pgno; change = DB_MPOOL_DIRTY; } if (change) LSN(pagep) = DB_REDO(op) ? *lsnp : argp->prevlsn; - if ((ret = memp_fput(mpf, pagep, change)) != 0) + if ((ret = mpf->put(mpf, pagep, change)) != 0) goto out; } + pagep = NULL; /* Now check the next page. Can only be set on a delete. */ npage: if (argp->next_pgno != PGNO_INVALID) { change = 0; - if ((ret = memp_fget(mpf, &argp->next_pgno, 0, &pagep)) != 0) { + if ((ret = mpf->get(mpf, &argp->next_pgno, 0, &pagep)) != 0) { if (DB_UNDO(op)) { /* * We are undoing and the page doesn't exist. @@ -235,7 +247,7 @@ npage: if (argp->next_pgno != PGNO_INVALID) { */ goto done; } else - if ((ret = memp_fget(mpf, &argp->next_pgno, + if ((ret = mpf->get(mpf, &argp->next_pgno, DB_MPOOL_CREATE, &pagep)) != 0) goto out; } @@ -252,21 +264,25 @@ npage: if (argp->next_pgno != PGNO_INVALID) { } if (change) LSN(pagep) = DB_REDO(op) ? *lsnp : argp->nextlsn; - if ((ret = memp_fput(mpf, pagep, change)) != 0) + if ((ret = mpf->put(mpf, pagep, change)) != 0) goto out; } + pagep = NULL; done: *lsnp = argp->prev_lsn; ret = 0; -out: REC_CLOSE; +out: if (pagep != NULL) + (void)mpf->put(mpf, pagep, 0); + REC_CLOSE; } /* * __db_ovref_recover -- * Recovery function for __db_ovref(). * - * PUBLIC: int __db_ovref_recover __P((DB_ENV *, DBT *, DB_LSN *, db_recops, void *)); + * PUBLIC: int __db_ovref_recover + * PUBLIC: __P((DB_ENV *, DBT *, DB_LSN *, db_recops, void *)); */ int __db_ovref_recover(dbenv, dbtp, lsnp, op, info) @@ -283,14 +299,15 @@ __db_ovref_recover(dbenv, dbtp, lsnp, op, info) PAGE *pagep; int cmp, modified, ret; + pagep = NULL; COMPQUIET(info, NULL); REC_PRINT(__db_ovref_print); REC_INTRO(__db_ovref_read, 1); - if ((ret = memp_fget(mpf, &argp->pgno, 0, &pagep)) != 0) { + if ((ret = mpf->get(mpf, &argp->pgno, 0, &pagep)) != 0) { if (DB_UNDO(op)) goto done; - (void)__db_pgerr(file_dbp, argp->pgno); + __db_pgerr(file_dbp, argp->pgno, ret); goto out; } @@ -310,13 +327,16 @@ __db_ovref_recover(dbenv, dbtp, lsnp, op, info) pagep->lsn = argp->lsn; modified = 1; } - if ((ret = memp_fput(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0) + if ((ret = mpf->put(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0) goto out; + pagep = NULL; done: *lsnp = argp->prev_lsn; ret = 0; -out: REC_CLOSE; +out: if (pagep != NULL) + (void)mpf->put(mpf, pagep, 0); + REC_CLOSE; } /* @@ -341,6 +361,7 @@ __db_relink_recover(dbenv, dbtp, lsnp, op, info) PAGE *pagep; int cmp_n, cmp_p, modified, ret; + pagep = NULL; COMPQUIET(info, NULL); REC_PRINT(__db_relink_print); REC_INTRO(__db_relink_read, 1); @@ -351,9 +372,9 @@ __db_relink_recover(dbenv, dbtp, lsnp, op, info) * the current page is the result of a split and is being recovered * elsewhere, so all we need do is recover the next page. */ - if ((ret = memp_fget(mpf, &argp->pgno, 0, &pagep)) != 0) { + if ((ret = mpf->get(mpf, &argp->pgno, 0, &pagep)) != 0) { if (DB_REDO(op)) { - (void)__db_pgerr(file_dbp, argp->pgno); + __db_pgerr(file_dbp, argp->pgno, ret); goto out; } goto next2; @@ -376,12 +397,13 @@ __db_relink_recover(dbenv, dbtp, lsnp, op, info) pagep->lsn = argp->lsn; modified = 1; } -next1: if ((ret = memp_fput(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0) +next1: if ((ret = mpf->put(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0) goto out; + pagep = NULL; -next2: if ((ret = memp_fget(mpf, &argp->next, 0, &pagep)) != 0) { +next2: if ((ret = mpf->get(mpf, &argp->next, 0, &pagep)) != 0) { if (DB_REDO(op)) { - (void)__db_pgerr(file_dbp, argp->next); + __db_pgerr(file_dbp, argp->next, ret); goto out; } goto prev; @@ -409,14 +431,15 @@ next2: if ((ret = memp_fget(mpf, &argp->next, 0, &pagep)) != 0) { else pagep->lsn = *lsnp; } - if ((ret = memp_fput(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0) + if ((ret = mpf->put(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0) goto out; + pagep = NULL; if (argp->opcode == DB_ADD_PAGE) goto done; -prev: if ((ret = memp_fget(mpf, &argp->prev, 0, &pagep)) != 0) { +prev: if ((ret = mpf->get(mpf, &argp->prev, 0, &pagep)) != 0) { if (DB_REDO(op)) { - (void)__db_pgerr(file_dbp, argp->prev); + __db_pgerr(file_dbp, argp->prev, ret); goto out; } goto done; @@ -441,13 +464,16 @@ prev: if ((ret = memp_fget(mpf, &argp->prev, 0, &pagep)) != 0) { else pagep->lsn = *lsnp; } - if ((ret = memp_fput(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0) + if ((ret = mpf->put(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0) goto out; + pagep = NULL; done: *lsnp = argp->prev_lsn; ret = 0; -out: REC_CLOSE; +out: if (pagep != NULL) + (void)mpf->put(mpf, pagep, 0); + REC_CLOSE; } /* @@ -468,8 +494,8 @@ __db_debug_recover(dbenv, dbtp, lsnp, op, info) __db_debug_args *argp; int ret; - COMPQUIET(op, 0); COMPQUIET(dbenv, NULL); + COMPQUIET(op, DB_TXN_ABORT); COMPQUIET(info, NULL); REC_PRINT(__db_debug_print); @@ -504,11 +530,12 @@ __db_noop_recover(dbenv, dbtp, lsnp, op, info) u_int32_t change; int cmp_n, cmp_p, ret; + pagep = NULL; COMPQUIET(info, NULL); REC_PRINT(__db_noop_print); REC_INTRO(__db_noop_read, 0); - if ((ret = memp_fget(mpf, &argp->pgno, 0, &pagep)) != 0) + if ((ret = mpf->get(mpf, &argp->pgno, 0, &pagep)) != 0) goto out; cmp_n = log_compare(lsnp, &LSN(pagep)); @@ -522,8 +549,349 @@ __db_noop_recover(dbenv, dbtp, lsnp, op, info) LSN(pagep) = argp->prevlsn; change = DB_MPOOL_DIRTY; } - ret = memp_fput(mpf, pagep, change); + ret = mpf->put(mpf, pagep, change); + pagep = NULL; done: *lsnp = argp->prev_lsn; -out: REC_CLOSE; +out: if (pagep != NULL) + (void)mpf->put(mpf, pagep, 0); + REC_CLOSE; +} + +/* + * __db_pg_alloc_recover -- + * Recovery function for pg_alloc. + * + * PUBLIC: int __db_pg_alloc_recover + * PUBLIC: __P((DB_ENV *, DBT *, DB_LSN *, db_recops, void *)); + */ +int +__db_pg_alloc_recover(dbenv, dbtp, lsnp, op, info) + DB_ENV *dbenv; + DBT *dbtp; + DB_LSN *lsnp; + db_recops op; + void *info; +{ + __db_pg_alloc_args *argp; + DB *file_dbp; + DBC *dbc; + DBMETA *meta; + DB_MPOOLFILE *mpf; + PAGE *pagep; + db_pgno_t pgno; + int cmp_n, cmp_p, created, level, modified, ret; + + meta = NULL; + pagep = NULL; + REC_PRINT(__db_pg_alloc_print); + REC_INTRO(__db_pg_alloc_read, 0); + + /* + * Fix up the allocated page. If we're redoing the operation, we have + * to get the page (creating it if it doesn't exist), and update its + * LSN. If we're undoing the operation, we have to reset the page's + * LSN and put it on the free list. + * + * Fix up the metadata page. If we're redoing the operation, we have + * to get the metadata page and update its LSN and its free pointer. + * If we're undoing the operation and the page was ever created, we put + * it on the freelist. + */ + pgno = PGNO_BASE_MD; + if ((ret = mpf->get(mpf, &pgno, 0, &meta)) != 0) { + /* The metadata page must always exist on redo. */ + if (DB_REDO(op)) { + __db_pgerr(file_dbp, pgno, ret); + goto out; + } else + goto done; + } + created = modified = 0; + if ((ret = mpf->get(mpf, &argp->pgno, 0, &pagep)) != 0) { + /* + * We have to be able to identify if a page was newly + * created so we can recover it properly. We cannot simply + * look for an empty header, because hash uses a pgin + * function that will set the header. Instead, we explicitly + * try for the page without CREATE and if that fails, then + * create it. + */ + if ((ret = + mpf->get(mpf, &argp->pgno, DB_MPOOL_CREATE, &pagep)) != 0) { + __db_pgerr(file_dbp, argp->pgno, ret); + goto out; + } + created = modified = 1; + } + + /* Fix up the allocated page. */ + cmp_n = log_compare(lsnp, &LSN(pagep)); + cmp_p = log_compare(&LSN(pagep), &argp->page_lsn); + + /* + * If an inital allocation is aborted and then reallocated + * during an archival restore the log record will have + * an LSN for the page but the page will be empty. + */ + if (IS_ZERO_LSN(LSN(pagep))) + cmp_p = 0; + CHECK_LSN(op, cmp_p, &LSN(pagep), &argp->page_lsn); + /* + * If we we rolled back this allocation previously during an + * archive restore, the page may have the LSN of the meta page + * at the point of the roll back. This will be no more + * than the LSN of the metadata page at the time of this allocation. + * Another special case we have to handle is if we ended up with a + * page of all 0's which can happen if we abort between allocating a + * page in mpool and initializing it. In that case, even if we're + * undoing, we need to re-initialize the page. + */ + if (DB_REDO(op) && + (cmp_p == 0 || + (IS_ZERO_LSN(argp->page_lsn) && + log_compare(&LSN(pagep), &argp->meta_lsn) <= 0))) { + /* Need to redo update described. */ + switch (argp->ptype) { + case P_LBTREE: + case P_LRECNO: + case P_LDUP: + level = LEAFLEVEL; + break; + default: + level = 0; + break; + } + P_INIT(pagep, file_dbp->pgsize, + argp->pgno, PGNO_INVALID, PGNO_INVALID, level, argp->ptype); + + pagep->lsn = *lsnp; + modified = 1; + } else if (DB_UNDO(op) && (cmp_n == 0 || created)) { + /* + * This is where we handle the case of a 0'd page (pagep->pgno + * is equal to PGNO_INVALID). + * Undo the allocation, reinitialize the page and + * link its next pointer to the free list. + */ + P_INIT(pagep, file_dbp->pgsize, + argp->pgno, PGNO_INVALID, argp->next, 0, P_INVALID); + + pagep->lsn = argp->page_lsn; + modified = 1; + } + + /* + * If the page was newly created, put it on the limbo list. + */ + if (IS_ZERO_LSN(LSN(pagep)) && + IS_ZERO_LSN(argp->page_lsn) && DB_UNDO(op)) { + /* Put the page in limbo.*/ + if ((ret = __db_add_limbo(dbenv, + info, argp->fileid, argp->pgno, 1)) != 0) + goto out; + } + + if ((ret = mpf->put(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0) + goto out; + pagep = NULL; + + /* Fix up the metadata page. */ + modified = 0; + cmp_n = log_compare(lsnp, &LSN(meta)); + cmp_p = log_compare(&LSN(meta), &argp->meta_lsn); + CHECK_LSN(op, cmp_p, &LSN(meta), &argp->meta_lsn); + if (cmp_p == 0 && DB_REDO(op)) { + /* Need to redo update described. */ + LSN(meta) = *lsnp; + meta->free = argp->next; + modified = 1; + } else if (cmp_n == 0 && DB_UNDO(op)) { + /* Need to undo update described. */ + LSN(meta) = argp->meta_lsn; + + /* + * If the page has a zero LSN then its newly created + * and will go into limbo rather than directly on the + * free list. + */ + if (!IS_ZERO_LSN(argp->page_lsn)) + meta->free = argp->pgno; + modified = 1; + } + if ((ret = mpf->put(mpf, meta, modified ? DB_MPOOL_DIRTY : 0)) != 0) + goto out; + meta = NULL; + /* + * This could be the metapage from a subdb which is read from disk + * to recover its creation. + */ + if (F_ISSET(file_dbp, DB_AM_SUBDB)) + switch (argp->type) { + case P_BTREEMETA: + case P_HASHMETA: + case P_QAMMETA: + file_dbp->sync(file_dbp, 0); + break; + } + +done: *lsnp = argp->prev_lsn; + ret = 0; + +out: if (pagep != NULL) + (void)mpf->put(mpf, pagep, 0); + if (meta != NULL) + (void)mpf->put(mpf, meta, 0); + if (ret == ENOENT && op == DB_TXN_BACKWARD_ALLOC) + ret = 0; + REC_CLOSE; +} + +/* + * __db_pg_free_recover -- + * Recovery function for pg_free. + * + * PUBLIC: int __db_pg_free_recover + * PUBLIC: __P((DB_ENV *, DBT *, DB_LSN *, db_recops, void *)); + */ +int +__db_pg_free_recover(dbenv, dbtp, lsnp, op, info) + DB_ENV *dbenv; + DBT *dbtp; + DB_LSN *lsnp; + db_recops op; + void *info; +{ + __db_pg_free_args *argp; + DB *file_dbp; + DBC *dbc; + DBMETA *meta; + DB_LSN copy_lsn; + DB_MPOOLFILE *mpf; + PAGE *pagep; + db_pgno_t pgno; + int cmp_n, cmp_p, modified, ret; + + COMPQUIET(info, NULL); + meta = NULL; + pagep = NULL; + REC_PRINT(__db_pg_free_print); + REC_INTRO(__db_pg_free_read, 1); + + /* + * Fix up the freed page. If we're redoing the operation we get the + * page and explicitly discard its contents, then update its LSN. If + * we're undoing the operation, we get the page and restore its header. + * Create the page if necessary, we may be freeing an aborted + * create. + */ + if ((ret = mpf->get(mpf, &argp->pgno, DB_MPOOL_CREATE, &pagep)) != 0) + goto out; + modified = 0; + (void)__ua_memcpy(©_lsn, &LSN(argp->header.data), sizeof(DB_LSN)); + cmp_n = log_compare(lsnp, &LSN(pagep)); + cmp_p = log_compare(&LSN(pagep), ©_lsn); + CHECK_LSN(op, cmp_p, &LSN(pagep), ©_lsn); + if (DB_REDO(op) && + (cmp_p == 0 || + (IS_ZERO_LSN(copy_lsn) && + log_compare(&LSN(pagep), &argp->meta_lsn) <= 0))) { + /* Need to redo update described. */ + P_INIT(pagep, file_dbp->pgsize, + argp->pgno, PGNO_INVALID, argp->next, 0, P_INVALID); + pagep->lsn = *lsnp; + + modified = 1; + } else if (cmp_n == 0 && DB_UNDO(op)) { + /* Need to undo update described. */ + memcpy(pagep, argp->header.data, argp->header.size); + + modified = 1; + } + if ((ret = mpf->put(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0) + goto out; + pagep = NULL; + + /* + * Fix up the metadata page. If we're redoing or undoing the operation + * we get the page and update its LSN and free pointer. + */ + pgno = PGNO_BASE_MD; + if ((ret = mpf->get(mpf, &pgno, 0, &meta)) != 0) { + /* The metadata page must always exist. */ + __db_pgerr(file_dbp, pgno, ret); + goto out; + } + + modified = 0; + cmp_n = log_compare(lsnp, &LSN(meta)); + cmp_p = log_compare(&LSN(meta), &argp->meta_lsn); + CHECK_LSN(op, cmp_p, &LSN(meta), &argp->meta_lsn); + if (cmp_p == 0 && DB_REDO(op)) { + /* Need to redo the deallocation. */ + meta->free = argp->pgno; + LSN(meta) = *lsnp; + modified = 1; + } else if (cmp_n == 0 && DB_UNDO(op)) { + /* Need to undo the deallocation. */ + meta->free = argp->next; + LSN(meta) = argp->meta_lsn; + modified = 1; + } + if ((ret = mpf->put(mpf, meta, modified ? DB_MPOOL_DIRTY : 0)) != 0) + goto out; + meta = NULL; + +done: *lsnp = argp->prev_lsn; + ret = 0; + +out: if (pagep != NULL) + (void)mpf->put(mpf, pagep, 0); + if (meta != NULL) + (void)mpf->put(mpf, meta, 0); + REC_CLOSE; +} + +/* + * __db_cksum_recover -- + * Recovery function for checksum failure log record. + * + * PUBLIC: int __db_cksum_recover __P((DB_ENV *, + * PUBLIC: DBT *, DB_LSN *, db_recops, void *)); + */ +int +__db_cksum_recover(dbenv, dbtp, lsnp, op, info) + DB_ENV *dbenv; + DBT *dbtp; + DB_LSN *lsnp; + db_recops op; + void *info; +{ + __db_cksum_args *argp; + + int ret; + + COMPQUIET(info, NULL); + COMPQUIET(lsnp, NULL); + COMPQUIET(op, DB_TXN_ABORT); + + REC_PRINT(__db_cksum_print); + + if ((ret = __db_cksum_read(dbenv, dbtp->data, &argp)) != 0) + return (ret); + + /* + * We had a checksum failure -- the only option is to run catastrophic + * recovery. + */ + if (F_ISSET(dbenv, DB_ENV_FATAL)) + ret = 0; + else { + __db_err(dbenv, + "Checksum failure requires catastrophic recovery"); + ret = __db_panic(dbenv, DB_RUNRECOVERY); + } + + __os_free(dbenv, argp); + return (ret); } |