Red Hat Bugzilla – Bug 1025817
RFE: Fix header reading in order to enable large file support
Last modified: 2017-05-16 08:08:20 EDT
Description of problem:
Currently we cannot use largefile support for GDBM, because part of the GDBM that reads header of the database file is not written correctly and we wouldn't be able to read files created with previous build of GDBM with new build of GDBM (with largefile support). However, I believe it is possible to rewrite part of the gdbm code to read both versions since they use specific magic numbers.
Just some other thoughts..
GDBM reads the header as a big chunk of data, so it understands only one specific format now. If the header is read field by field, I believe it would be able to accept also other formats and we'll be finally able to support large file support, while be able to read the database file created without large file support at the same time.
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Gdbm in latest versions contains gdbm_dump (and gdbmexport) tool which allows exporting of database to Flat Format (see gdbm doc).
Also it is possible to install gdbm.i686 on 64-bit systems to support reading of gdbm databases created without largefiles support.
Feel free to reopen. Or for new features create bugs in upstream tracker - https://puszcza.gnu.org.ua/bugs/?group=gdbm