thank you for the help.

perhaps my question is stupid, but what is " global shared/exclusive  
fcntl lock"?

i guess it could be global file in the sytem or a global object in the  
application itself?

-piet

Am 25.01.2008 um 19:37 schrieb Jeff Johnson:

>
> On Jan 25, 2008, at 1:10 PM, Peter Kalbus wrote:
>
>> cool, only i issue is open. the changes are working (at least  
>> compilation).
>>
>
> greate.
>
> Here's the first step at using db-4.6.21 with non-functional mmap on  
> QNX.
>
> Note that changing rpm (and using rpmdb with DB_PRIVATE) is not at  
> all the right
> way to fix this problem. So I have negative interest in adding this  
> patch to
> rpm5.org sources.
>
> Likely, using sqlite3 instead of Berkeley DB 4.6.21 is the best fix  
> for
> your company.
>
> Meanwhile the patch below achieves what Oracle said to do: Use  
> DB_PRIVATE.
>
> The remaining piece of the puzzle (for you and QNX) will be to get a  
> global shared/exclusive fcntl
> lock in place and testing that the lock is effective.
>
> 73 de Jeff
>
> Index: macros.in
> ===================================================================
> RCS file: /v/rpm/cvs/rpm/macros.in,v
> retrieving revision 1.227.2.1
> diff -u -b -B -w -p -r1.227.2.1 macros.in
> --- macros.in   15 Jan 2008 14:19:18 -0000      1.227.2.1
> +++ macros.in   25 Jan 2008 18:29:36 -0000
> @@ -632,7 +632,7 @@ print (t)\
> %__dbi_cdb                     create cdb mpool mp_mmapsize=16Mb  
> mp_size=1Mb \
>                                thread_count=64
>
> -%__dbi_other                   %{?_tmppath:tmpdir=%{_tmppath}} %{? 
> __dbi_cdb}
> +%__dbi_other                   %{?_tmppath:tmpdir=%{_tmppath}}  
> private
>
> # Note: adding nofsync here speeds up --rebuilddb a lot.
> %__dbi_rebuild                 nofsync !log !txn !cdb
> Index: rpmdb/dbconfig.c
> ===================================================================
> RCS file: /v/rpm/cvs/rpm/rpmdb/dbconfig.c,v
> retrieving revision 1.51
> diff -u -b -B -w -p -r1.51 dbconfig.c
> --- rpmdb/dbconfig.c    22 Nov 2007 18:50:27 -0000      1.51
> +++ rpmdb/dbconfig.c    25 Jan 2008 18:29:41 -0000
> @@ -820,12 +820,14 @@ dbiIndex db3New(rpmdb rpmdb, rpmTag rpmt
>     dbi->dbi_byteswapped = -1; /* -1 unknown, 0 native order, 1  
> alien order */
>
> #if defined(WITH_DB)
> +#if 0
>     if (!dbi->dbi_use_dbenv) {         /* db3 dbenv is always used  
> now. */
>        dbi->dbi_use_dbenv = 1;
>        dbi->dbi_eflags |= (DB_INIT_MPOOL|DB_JOINENV);
>        dbi->dbi_mmapsize = 16 * 1024 * 1024;
>        dbi->dbi_cachesize = 1 * 1024 * 1024;
>     }
> +#endif
>
>     if ((dbi->dbi_bt_flags | dbi->dbi_h_flags) & DB_DUP)
>        dbi->dbi_permit_dups = 1;
>
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