X-Authentication-Warning: delorie.com: mail set sender to djgpp-bounces using -f Message-Id: <201203042335.q24NZTn5004491@delorie.com> From: Juan Manuel Guerrero To: djgpp-announce AT delorie DOT com Subject: ANNOUNCE: DJGPP port of GNU dbm (gdbm) 1.10 uploaded. Date: Mon, 5 Mar 2012 00:31:25 +0100 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline This is a port of GNU dbm (gdbm) 1.10 to MSDOS/DJGPP. GNU dbm (gdbm) is a set of database routines that use extendible hashing and works similar to the standard UNIX dbm routines. The library provides also an optional compatibility layer for UNIX-like dbm and ndbm calls. These routines are provided to a programmer needing to create and manipulate a hashed database. gdbm is *NOT* a complete database package for an end user. DJGPP specific changes. ======================= The port of gdbm will offer file locking support if compiled with DJGPP 2.04 and if the used OS offers the required file locking functionality. But if compiled with DJGPP 2.03 the file locking support will never been available. To be able to use that port version, the calls to fcntl() have been replaced by macros that always return success. Thus that version will never try to lock data base files during operation. All other changes concern DOS specific issues like the reading and writing in binary mode, the handling of mixed slashes and backslashes in paths, the closing of source and destination files before renaming them and the initialization of the hash table directory for a new data base files. This initialization is very dependent on the st_blksize value returned by fstat(). This value must always be an integral multiple of 512 or the initialization will fail and no new data base file will be created. The dbm and ndbm specific functions have been moved into a separate library. This means that there are two libraries: - libgdbm.a containing all gdbm specific functions and - libgdbm_compat.a containing all dbm specific functions If you need to compile an application using the old unix dbm functions you will have to use a command like this: gcc application.c -lgdbm_compat -lgdbm Now you will have access to the dbm compatibility functions. Please note, that these compatibility functions are mapped to the equivalent gdbm functions so you must link both libraries in the order shown in the example above. The port does neither support mmap() for I/O operations nor O_CLOEXEC for file closing. Please read the docs to become familiar with the products. The port has been compiled using stock djdev203 (patchlevel 2) and consists of the usual three packages that can be downloaded from ftp.delorie.com and mirrors as (timestamp 2012-03-04): GNU dbm 1.10 binaries, headers, libraries, info and man format documentation: ftp://ftp.delorie.com/pub/djgpp/current/v2gnu/gdbm110b.zip GNU dbm 1.10 dvi, html, pdf and ps format documentation: ftp://ftp.delorie.com/pub/djgpp/current/v2gnu/gdbm110d.zip GNU dbm 1.10 source: ftp://ftp.delorie.com/pub/djgpp/current/v2gnu/gdbm110s.zip The binaries have been produced a second time using the stock version of djdev204 beta library. This package is available at ftp.delorie.com and mirrors as (timestamp 2012-03-04): GNU dbm 1.10 binaries, headers, libraries, info and man format documentation: ftp://ftp.delorie.com/pub/djgpp/current/v2gnu/gdbm110b.zip Send gdbm specific bug reports to . Send suggestions and bug reports concerning the DJGPP port to comp.os.msdos.djgpp or . Enjoy. Guerrero, Juan Manuel