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1997-11-11 21:30 Ulrich Drepper <drepper@cygnus.com> * include/sys/stat.h: Define stat, fstat, lstat and *64 variants as macros so the the library compiles correctly even without optimization. * io/fstat.c: Undef fstat. * io/fstat64.c: Undef fstat64 * io/lstat.c: Undef lstat. * io/lstat64.c: Undef lstat64 * io/stat.c: Undef stat. * io/stat64.c: Undef stat64 * io/fts.c: Include <include/sys/stat.h> to get macro definitions. * io/ftw.c: Likewise. * io/getdirname.c: Likewise. * Makefile (install): Run test-installation.pl if possible. * db2/Makefile: Update from db-2.3.12. * db2/db.h: Likewise. * db2/db_int.h: Likewise. * db2/btree/bt_cursor.c: Likewise. * db2/btree/bt_delete.c: Likewise. * db2/btree/bt_open.c: Likewise. * db2/btree/bt_put.c: Likewise. * db2/btree/bt_rec.c: Likewise. * db2/btree/bt_recno.c: Likewise. * db2/btree/bt_search.c: Likewise. * db2/btree/bt_split.c: Likewise. * db2/btree/bt_stat.c: Likewise. * db2/btree/btree.src: Likewise. * db2/btree/btree_auto.c: Likewise. * db2/btree/bt_cursor.c: Likewise. * db2/btree/bt_delete.c: Likewise. * db2/btree/bt_open.c: Likewise. * db2/btree/bt_put.c: Likewise. * db2/btree/bt_rec.c: Likewise. * db2/btree/bt_recno.c: Likewise. * db2/btree/bt_search.c: Likewise. * db2/btree/bt_split.c: Likewise. * db2/btree/bt_stat.c: Likewise. * db2/btree/btree.src: Likewise. * db2/btree/btree_auto.c: Likewise. * db2/common/db_appinit.c: Likewise. * db2/common/db_apprec.c: Likewise. * db2/common/db_byteorder.c: Likewise. * db2/common/db_region.c: Likewise. * db2/db/db.c: Likewise * db2/db/db.src: Likewise * db2/db/db_auto.c: Likewise * db2/db/db_dispatch.c: Likewise * db2/db/db_dup.c: Likewise * db2/db/db_overflow.c: Likewise * db2/db/db_pr.c: Likewise * db2/db/db_rec.c: Likewise * db2/db/db_ret.c: Likewise * db2/db/db_thread.c: Likewise * db2/db185/db185.c: Likewise. * db2/hash/hash.c: Likewise. * db2/hash/hash.src: Likewise. * db2/hash/hash_auto.c: Likewise. * db2/hash/hash_dup.c: Likewise. * db2/hash/hash_page.c: Likewise. * db2/hash/hash_rec.c: Likewise. * db2/include/btree_auto.h: Likewise. * db2/include/btree_ext.h: Likewise. * db2/include/clib_ext.h: Likewise. * db2/include/common_ext.h: Likewise. * db2/include/db.h.src: Likewise. * db2/include/db_am.h: Likewise. * db2/include/db_auto.h: Likewise. * db2/include/db_cxx.h: Likewise. * db2/include/db_ext.h: Likewise. * db2/include/db_int.h.src: Likewise. * db2/include/hash.h: Likewise. * db2/include/hash_auto.h: Likewise. * db2/include/hash_ext.h: Likewise. * db2/include/lock.h: Likewise. * db2/include/lock_ext.h: Likewise. * db2/include/log.h: Likewise. * db2/include/log_ext.h: Likewise. * db2/include/mp.h: Likewise. * db2/include/mp_ext.h: Likewise. * db2/include/mutex_ext.h: Likewise. * db2/include/os_ext.h: Likewise. * db2/include/os_func.h: Likewise. * db2/include/txn.h: Likewise. * db2/include/txn_ext.h: Likewise. * db2/lock/lock.c: Likewise. * db2/lock/lock_deadlock.c: Likewise. * db2/log/log.c: Likewise. * db2/log/log_archive.c: Likewise. * db2/log/log_auto.c: Likewise. * db2/log/log_findckp.c: Likewise. * db2/log/log_get.c: Likewise. * db2/log/log_put.c: Likewise. * db2/log/log_rec.c: Likewise. * db2/log/log_register.c: Likewise. * db2/mp/mp_bh.c: Likewise. * db2/mp/mp_fget.c: Likewise. * db2/mp/mp_fopen.c: Likewise. * db2/mp/mp_fput.c: Likewise. * db2/mp/mp_fset.c: Likewise. * db2/mp/mp_open.c: Likewise. * db2/mp/mp_pr.c: Likewise. * db2/mp/mp_region.c: Likewise. * db2/mp/mp_sync.c: Likewise. * db2/mutex/mutex.c: Likewise. * db2/os/os_abs.c: Likewise. * db2/os/os_dir.c: Likewise. * db2/os/os_fid.c: Likewise. * db2/os/os_fsync.c: Likewise. * db2/os/os_func.c: Likewise. * db2/os/os_map.c: Likewise. * db2/os/os_oflags.c: Likewise. * db2/os/os_open.c: Likewise. * db2/os/os_rpath.c: Likewise. * db2/os/os_rw.c: Likewise. * db2/os/os_seek.c: Likewise. * db2/os/os_sleep.c: Likewise. * db2/os/os_stat.c: Likewise. * db2/os/os_unlink.c: Likewise. * db2/progs/db_deadlock/db_deadlock.c: Likewise. * db2/progs/db_dump/db_dump.c: Likewise. * db2/progs/db_load/db_load.c: Likewise. * db2/progs/db_recover/db_recover.c: Likewise. * db2/progs/db_stat/db_stat.c: Likewise. * db2/txn/txn.c: Likewise. * db2/txn/txn_auto.c: Likewise. * db2/txn/txn_rec.c: Likewise. * db2/os/db_os_abs.c: Removed. * db2/os/db_os_dir.c: Removed. * db2/os/db_os_fid.c: Removed. * db2/os/db_os_lseek.c: Removed. * db2/os/db_os_mmap.c: Removed. * db2/os/db_os_open.c: Removed. * db2/os/db_os_rw.c: Removed. * db2/os/db_os_sleep.c: Removed. * db2/os/db_os_stat.c: Removed. * db2/os/db_os_unlink.c: Removed. * libio/stdio.h (fopen): Add __restrict to parameters. * manual/process.texi (system): Describe behaviour for NULL argument. * stdio-common/printf-parse.h: Parse hh modifier. * stdio-common/vfprintf.c: Handle hh modifier. * stdio-common/vfscanf.c: Likewise. * manual/stdio.texi: Describe hh modifier for scanf/printf. * math/complex.h: Don't define _Imaginary_I, but instead _Complex_I. gcc does no yet know the `imaginary' keyword. * math/test-math.c: Add little test for know gcc bug. * math/tgmath.h: Make complex versions of log10() only available if __USE_GNU. * stdlib/test-canon.c: Fix typo. * sysdeps/generic/setenv.c: Avoid compilation warnings. Reported by Jim Meyering. * sysdeps/generic/bits/errno.h: EILSEQ is an ISO C error number. * sysdeps/mach/hurd/bits/errno.h: Likewise. * sysdeps/standalone/bits/errno.h: Likewise. * sysdeps/unix/sysv/linux/bits/errno.h: Likewise. * sysdeps/i386/i586/memcpy.S: New file. * sysdeps/i386/i586/mempcpy.S: New file. * sysdeps/i386/i586/memset.S: Fix typo. * sysdeps/posix/getcwd.c: Define HAVE_MEMPCPY for _LIBC. Add casts. * sysdeps/posix/system.c: Add comment to explain code. * sysdeps/wordsize-32/inttypes.h: Include <stddef.h> for wchar_t. Define PTRDIFF_{MIN,MAX}, SIG_ATOMIC_{MIN,MAX}, SIZE_MAX, WCHAR_{MIN,MAX}, WINT_{MIN,MAX}. Define wcstoimax, wcstoumax. * sysdeps/wordsize-64/inttypes.h: Likewise. * wcsmbs/wchar.h: Define WCHAR_{MIN,MAX} if not already defined. Declare __wcsto{l,ul,ll,ull}_internal only if not already done. * time/Makefile (routines): Add strfxtime. * time/strftime.c: Implement %F and %f format. * time/strfxtime.c: New file. * time/time.h: Define new types and symbols from ISO C 9X. * time/mktime.c: Little comment correction. 1997-11-10 Andreas Jaeger <aj@arthur.rhein-neckar.de> * sysdeps/libm-ieee754/s_sincosl.c: Fix typo. * sysdeps/libm-ieee754/s_tanl.c: Fix typo. * sysdeps/libm-ieee754/s_floorl.c: Correct typos. * sysdeps/libm-ieee754/e_remainderl.c: Replace EXTRACT_LDOUBLE_WORDS by GET_LDOUBLE_WORDS. * sysdeps/libm-ieee754/e_atan2l.c: Replace EXTRACT_LDOUBLE_WORDS by GET_LDOUBLE_WORDS. * sysdeps/libm-ieee754/s_scalbnl.c: Replace ";" by "," for correct variable declaration. * sysdeps/libm-ieee754/s_scalblnl.c: Likewise. * sysdeps/libm-ieee754/s_lrint.c (__lrint): Correct function. * math/libm-test.c (sqrt_test): Add test for sqrt (0.25). (asin_test): Add more test. 1997-11-10 23:34 Ulrich Drepper <drepper@cygnus.com> * sysdeps/libm-ieee754/e_asin.c: Add braces to make code clearer and to not confuse the poor compiler. * sysdeps/libm-ieee754/e_asinf.c: Likewise. Reported by vertex@cagent.com. 1997-11-09 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * elf/dl-lookup.c (do_lookup): Don't accept the base version if we require a specific one. * libio/oldfreopen.c: Bind old symbols to version GLIBC_2.0. * libio/oldiofopen.c: Likewise. * libio/oldstdfiles.c: Likewise. * libc.map: Export them. 1997-11-10 07:40 H.J. Lu <hjl@gnu.ai.mit.edu> * stdlib/exit.c (exit): Handle recursive calls to exit (). 1997-11-09 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/m68k/fpu/s_llrint.c: Fixed to take double argument instead of long double. * sysdeps/m68k/fpu/s_llrintf.c: New file. * sysdeps/m68k/fpu/s_llrintl.c: New file. * sysdeps/libm-ieee754/s_llrint.c: Make compilable and fix overflow condition. * sysdeps/libm-ieee754/s_llrintf.c: Fix overflow condition. * sysdeps/libm-ieee754/s_llrintl.c: Likewise. * sysdeps/libm-ieee754/s_llround.c: Likewise. * sysdeps/libm-ieee754/s_llroundf.c: Likewise. * sysdeps/libm-ieee754/s_llroundl.c: Likewise. * sysdeps/libm-ieee754/s_lrint.c: Likewise. * sysdeps/libm-ieee754/s_lrintf.c: Likewise. * sysdeps/libm-ieee754/s_lrintl.c: Likewise. * sysdeps/libm-ieee754/s_lround.c: Likewise. * sysdeps/libm-ieee754/s_lroundf.c: Likewise. * sysdeps/libm-ieee754/s_lroundl.c: Likewise. * math/libm-test.c: Test all three variants of lrint and llrint. Fix typos in lround and llround tests. Add tests for boundary cases for lrint and llround. 1997-11-08 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * manual/arith.texi: Misc doc fixes. * manual/ctype.texi: Likewise. * manual/pattern.texi: Likewise. * manual/terminal.texi: Likewise. 1997-11-08 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/xstatconv.c: Use struct assignment instead of memcpy to let the compiler use whatever it regards as optimal. * sysdeps/unix/sysv/linux/alpha/xstatconv.c: Likewise. 1997-11-08 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/Makefile (sysdep_headers) [$(subdir)=misc]: Add sys/prctl.h. * sysdeps/unix/sysv/linux/Dist: Distribute it. 1997-11-08 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * io/ftwtest-sh: Don't use the unknown which command, instead try pwd as /bin/pwd and /usr/bin/pwd. 1997-11-08 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * manual/maint.texi (Tools for Installation): Don't recommend broken version 3.76.1 of make. (Porting): Fix wording. 1997-11-06 06:13 H.J. Lu <hjl@gnu.ai.mit.edu> * config.make.in (build-pic-default): New, defined with pic_default. * configure.in (pic_default): New, set to yes if PIC is default. * Makeconfig (CPPFLAGS-.o, CPPFLAGS-.op, CPPFLAGS-.og, CPPFLAGS-.ob): Add -DPIC if $(build-pic-default) is yes. 1997-11-09 18:15 Ulrich Drepper <drepper@cygnus.com> * Makerules (libc.so): Fix typo. * csu/Makefile (CFLAGS-initfini.s): Correctly fix moving function definition. Patch by Zack Weinberg <zack@rabi.phys.columbia.edu>. * stdlib/strtod.c: Handle numbers like 0.0e10000 correctly which produce ±0.0. Reported by Joe Keane <jgk@jgk.org>. * sysdeps/libm-ieee754/s_ceill.c: Fix typos. * sysdeps/libm-ieee754/s_llrint.c: Correct code, it never worked. 1997-11-06 07:00 H.J. Lu <hjl@gnu.ai.mit.edu> * sysdeps/unix/sysv/i386/i686/time.S: Removed. 1997-11-08 14:07 Thorsten Kukuk <kukuk@vt.uni-paderborn.de> * nis/libnsl.map: Add __do_niscall2 for nis_cachemgr. * nis/nis_call.c: Set UDP resend timeout correct. * nis/nss_compat/compat-grp.c: Rewritten to make it faster. * nis/nss_compat/compat-pwd.c: Likewise. * nis/nss_compat/compat-spwd.c: Likewise. * nis/ypclnt.c: Fix UDP resend timeout, fix yp_bind/do_ypcall interaction. * inet/protocols/routed.h: Include sys/socket.h. * inet/protocols/talkd.h: Likewise. * inet/protocols/timed.h: Include rpc/types.h. * sunrpc/rpc/pmap_clnt.h: Include rpc/clnt.h. 1997-11-06 01:39 Ulrich Drepper <drepper@cygnus.com> * Makerules (libc.so): Add missing closing brace. 1997-11-05 Brendan Kehoe <brendan@lisa.cygnus.com> * libio.h (__P): Name its arg `p' instead of `params'. This was added solely to work around problems with the definition of __P in the Solaris math.h header.
386 lines
10 KiB
C
386 lines
10 KiB
C
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 1996, 1997
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* Sleepycat Software. All rights reserved.
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*/
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/*
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* Copyright (c) 1990, 1993, 1994, 1995, 1996
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* Keith Bostic. All rights reserved.
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*/
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/*
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* Copyright (c) 1990, 1993, 1994, 1995
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Mike Olson.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "config.h"
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#ifndef lint
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static const char sccsid[] = "@(#)db_overflow.c 10.7 (Sleepycat) 11/2/97";
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#endif /* not lint */
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#ifndef NO_SYSTEM_INCLUDES
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#include <sys/types.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#endif
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#include "db_int.h"
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#include "db_page.h"
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#include "db_am.h"
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#include "common_ext.h"
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/*
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* Big key/data code.
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*
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* Big key and data entries are stored on linked lists of pages. The initial
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* reference is a structure with the total length of the item and the page
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* number where it begins. Each entry in the linked list contains a pointer
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* to the next page of data, and so on.
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*/
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/*
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* __db_goff --
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* Get an offpage item.
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*
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* PUBLIC: int __db_goff __P((DB *, DBT *,
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* PUBLIC: u_int32_t, db_pgno_t, void **, u_int32_t *));
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*/
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int
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__db_goff(dbp, dbt, tlen, pgno, bpp, bpsz)
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DB *dbp;
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DBT *dbt;
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u_int32_t tlen;
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db_pgno_t pgno;
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void **bpp;
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u_int32_t *bpsz;
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{
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PAGE *h;
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db_indx_t bytes;
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int ret;
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u_int32_t curoff, needed, start;
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u_int8_t *p, *src;
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/*
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* Check if the buffer is big enough; if it is not and we are
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* allowed to malloc space, then we'll malloc it. If we are
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* not (DB_DBT_USERMEM), then we'll set the dbt and return
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* appropriately.
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*/
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if (F_ISSET(dbt, DB_DBT_PARTIAL)) {
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start = dbt->doff;
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needed = dbt->dlen;
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} else {
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start = 0;
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needed = tlen;
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}
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/*
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* Allocate any necessary memory.
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*
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* XXX: Never allocate 0 bytes;
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*/
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if (F_ISSET(dbt, DB_DBT_USERMEM)) {
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if (needed > dbt->ulen) {
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dbt->size = needed;
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return (ENOMEM);
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}
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} else if (F_ISSET(dbt, DB_DBT_MALLOC)) {
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dbt->data = dbp->db_malloc == NULL ?
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(void *)__db_malloc(needed + 1) :
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(void *)dbp->db_malloc(needed + 1);
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if (dbt->data == NULL)
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return (ENOMEM);
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} else if (*bpsz == 0 || *bpsz < needed) {
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*bpp = (*bpp == NULL ?
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(void *)__db_malloc(needed + 1) :
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(void *)__db_realloc(*bpp, needed + 1));
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if (*bpp == NULL)
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return (ENOMEM);
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*bpsz = needed + 1;
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dbt->data = *bpp;
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} else
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dbt->data = *bpp;
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/*
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* Step through the linked list of pages, copying the data on each
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* one into the buffer. Never copy more than the total data length.
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*/
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dbt->size = needed;
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for (curoff = 0, p = dbt->data; pgno != P_INVALID && needed > 0;) {
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if ((ret = memp_fget(dbp->mpf, &pgno, 0, &h)) != 0) {
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(void)__db_pgerr(dbp, pgno);
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return (ret);
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}
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/* Check if we need any bytes from this page. */
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if (curoff + OV_LEN(h) >= start) {
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src = (u_int8_t *)h + P_OVERHEAD;
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bytes = OV_LEN(h);
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if (start > curoff) {
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src += start - curoff;
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bytes -= start - curoff;
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}
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if (bytes > needed)
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bytes = needed;
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memcpy(p, src, bytes);
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p += bytes;
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needed -= bytes;
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}
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curoff += OV_LEN(h);
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pgno = h->next_pgno;
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memp_fput(dbp->mpf, h, 0);
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}
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return (0);
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}
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/*
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* __db_poff --
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* Put an offpage item.
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*
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* PUBLIC: int __db_poff __P((DB *, const DBT *, db_pgno_t *,
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* PUBLIC: int (*)(DB *, u_int32_t, PAGE **)));
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*/
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int
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__db_poff(dbp, dbt, pgnop, newfunc)
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DB *dbp;
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const DBT *dbt;
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db_pgno_t *pgnop;
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int (*newfunc) __P((DB *, u_int32_t, PAGE **));
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{
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PAGE *pagep, *lastp;
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DB_LSN new_lsn, null_lsn;
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DBT tmp_dbt;
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db_indx_t pagespace;
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u_int32_t sz;
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u_int8_t *p;
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int ret;
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/*
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* Allocate pages and copy the key/data item into them. Calculate the
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* number of bytes we get for pages we fill completely with a single
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* item.
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*/
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pagespace = P_MAXSPACE(dbp->pgsize);
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lastp = NULL;
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for (p = dbt->data,
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sz = dbt->size; sz > 0; p += pagespace, sz -= pagespace) {
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/*
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* Reduce pagespace so we terminate the loop correctly and
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* don't copy too much data.
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*/
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if (sz < pagespace)
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pagespace = sz;
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/*
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* Allocate and initialize a new page and copy all or part of
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* the item onto the page. If sz is less than pagespace, we
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* have a partial record.
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*/
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if ((ret = newfunc(dbp, P_OVERFLOW, &pagep)) != 0)
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return (ret);
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if (DB_LOGGING(dbp)) {
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tmp_dbt.data = p;
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tmp_dbt.size = pagespace;
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ZERO_LSN(null_lsn);
|
|
if ((ret = __db_big_log(dbp->dbenv->lg_info, dbp->txn,
|
|
&new_lsn, 0, DB_ADD_BIG, dbp->log_fileid,
|
|
PGNO(pagep), lastp ? PGNO(lastp) : PGNO_INVALID,
|
|
PGNO_INVALID, &tmp_dbt, &LSN(pagep),
|
|
lastp == NULL ? &null_lsn : &LSN(lastp),
|
|
&null_lsn)) != 0)
|
|
return (ret);
|
|
|
|
/* Move lsn onto page. */
|
|
if (lastp)
|
|
LSN(lastp) = new_lsn;
|
|
LSN(pagep) = new_lsn;
|
|
}
|
|
|
|
P_INIT(pagep, dbp->pgsize,
|
|
PGNO(pagep), PGNO_INVALID, PGNO_INVALID, 0, P_OVERFLOW);
|
|
OV_LEN(pagep) = pagespace;
|
|
OV_REF(pagep) = 1;
|
|
memcpy((u_int8_t *)pagep + P_OVERHEAD, p, pagespace);
|
|
|
|
/*
|
|
* If this is the first entry, update the user's info.
|
|
* Otherwise, update the entry on the last page filled
|
|
* in and release that page.
|
|
*/
|
|
if (lastp == NULL)
|
|
*pgnop = PGNO(pagep);
|
|
else {
|
|
lastp->next_pgno = PGNO(pagep);
|
|
pagep->prev_pgno = PGNO(lastp);
|
|
(void)memp_fput(dbp->mpf, lastp, DB_MPOOL_DIRTY);
|
|
}
|
|
lastp = pagep;
|
|
}
|
|
(void)memp_fput(dbp->mpf, lastp, DB_MPOOL_DIRTY);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* __db_ovref --
|
|
* Increment/decrement the reference count on an overflow page.
|
|
*
|
|
* PUBLIC: int __db_ovref __P((DB *, db_pgno_t, int));
|
|
*/
|
|
int
|
|
__db_ovref(dbp, pgno, adjust)
|
|
DB *dbp;
|
|
db_pgno_t pgno;
|
|
int adjust;
|
|
{
|
|
PAGE *h;
|
|
int ret;
|
|
|
|
if ((ret = memp_fget(dbp->mpf, &pgno, 0, &h)) != 0) {
|
|
(void)__db_pgerr(dbp, pgno);
|
|
return (ret);
|
|
}
|
|
|
|
if (DB_LOGGING(dbp))
|
|
if ((ret = __db_ovref_log(dbp->dbenv->lg_info, dbp->txn,
|
|
&LSN(h), 0, dbp->log_fileid, h->pgno, (int32_t)adjust,
|
|
&LSN(h))) != 0)
|
|
return (ret);
|
|
OV_REF(h) += adjust;
|
|
|
|
(void)memp_fput(dbp->mpf, h, DB_MPOOL_DIRTY);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* __db_doff --
|
|
* Delete an offpage chain of overflow pages.
|
|
*
|
|
* PUBLIC: int __db_doff __P((DB *, db_pgno_t, int (*)(DB *, PAGE *)));
|
|
*/
|
|
int
|
|
__db_doff(dbp, pgno, freefunc)
|
|
DB *dbp;
|
|
db_pgno_t pgno;
|
|
int (*freefunc) __P((DB *, PAGE *));
|
|
{
|
|
PAGE *pagep;
|
|
DB_LSN null_lsn;
|
|
DBT tmp_dbt;
|
|
int ret;
|
|
|
|
do {
|
|
if ((ret = memp_fget(dbp->mpf, &pgno, 0, &pagep)) != 0) {
|
|
(void)__db_pgerr(dbp, pgno);
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* If it's an overflow page and it's referenced by more than
|
|
* one key/data item, decrement the reference count and return.
|
|
*/
|
|
if (TYPE(pagep) == P_OVERFLOW && OV_REF(pagep) > 1) {
|
|
(void)memp_fput(dbp->mpf, pagep, 0);
|
|
return (__db_ovref(dbp, pgno, -1));
|
|
}
|
|
|
|
if (DB_LOGGING(dbp)) {
|
|
tmp_dbt.data = (u_int8_t *)pagep + P_OVERHEAD;
|
|
tmp_dbt.size = OV_LEN(pagep);
|
|
ZERO_LSN(null_lsn);
|
|
if ((ret = __db_big_log(dbp->dbenv->lg_info, dbp->txn,
|
|
&LSN(pagep), 0, DB_REM_BIG, dbp->log_fileid,
|
|
PGNO(pagep), PREV_PGNO(pagep), NEXT_PGNO(pagep),
|
|
&tmp_dbt, &LSN(pagep), &null_lsn, &null_lsn)) != 0)
|
|
return (ret);
|
|
}
|
|
pgno = pagep->next_pgno;
|
|
if ((ret = freefunc(dbp, pagep)) != 0)
|
|
return (ret);
|
|
} while (pgno != PGNO_INVALID);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* __db_moff --
|
|
* Match on overflow pages.
|
|
*
|
|
* Given a starting page number and a key, return <0, 0, >0 to indicate if the
|
|
* key on the page is less than, equal to or greater than the key specified.
|
|
*
|
|
* PUBLIC: int __db_moff __P((DB *, const DBT *, db_pgno_t));
|
|
*/
|
|
int
|
|
__db_moff(dbp, dbt, pgno)
|
|
DB *dbp;
|
|
const DBT *dbt;
|
|
db_pgno_t pgno;
|
|
{
|
|
PAGE *pagep;
|
|
u_int32_t cmp_bytes, key_left;
|
|
int ret;
|
|
u_int8_t *p1, *p2;
|
|
|
|
/* While there are both keys to compare. */
|
|
for (ret = 0, p1 = dbt->data,
|
|
key_left = dbt->size; key_left > 0 && pgno != PGNO_INVALID;) {
|
|
if (memp_fget(dbp->mpf, &pgno, 0, &pagep) != 0) {
|
|
(void)__db_pgerr(dbp, pgno);
|
|
return (0); /* No system error return. */
|
|
}
|
|
|
|
cmp_bytes = OV_LEN(pagep) < key_left ? OV_LEN(pagep) : key_left;
|
|
key_left -= cmp_bytes;
|
|
for (p2 =
|
|
(u_int8_t *)pagep + P_OVERHEAD; cmp_bytes-- > 0; ++p1, ++p2)
|
|
if (*p1 != *p2) {
|
|
ret = (long)*p1 - (long)*p2;
|
|
break;
|
|
}
|
|
pgno = NEXT_PGNO(pagep);
|
|
(void)memp_fput(dbp->mpf, pagep, 0);
|
|
if (ret != 0)
|
|
return (ret);
|
|
}
|
|
if (key_left > 0) /* DBT is longer than page key. */
|
|
return (-1);
|
|
if (pgno != PGNO_INVALID) /* DBT is shorter than page key. */
|
|
return (1);
|
|
return (0);
|
|
}
|