C-ISAM locking conflicts between v4.1 and v7.1 on SCO UNIX.

C-ISAM locking conflicts between v4.1 and v7.1 on SCO UNIX. Can someone shed some light on whether this apparent difference (conflict) is intentional or a bug? Unfortunately we have some legacy progs at some sites that prevent running all on one and the same flavor so we're trying to determine if perhaps someone else has run across the problem and may have a solution/work-around. Looked at Informix web-site but didn't find anything. Record locking discrepancy: The problem appears to be that version 7.1 is placing a lock on the .idx file, rather than .dat. I suspect the file locking discrepancy is due to 7.1 placing a lock on the .dat rather than the .idx for excllock. It appears as though record locking file locking behaviors have been reversed. File locks: isopen( "file", ISINOUT+ISEXCLLOCK ); senario: program 1 linked with cisam7.1 exclusively locks a file on open program 2 linked with cisam4.1 exclusively locks the same file ( should fail with EACCESS ) ** the order in which the programs are executed doesn't make a difference..neither recognizes the others exclusive lock. Record locks: isread( fd, (char *)&buf, ISFIRST+ISLOCK ); senario: program 1 linked with cisam7.1 locks a record ( file is open MANULOCK ) program 2 linked with cisam4.1 attempts to open the same file as isopen( "file", ISINOUT+ISMANULOCK ); and fails with EACCESS ** locking a record should NOT exlusively lock the file ** if the order of execution is reversed ( ie. cisam4.1 locks first ) program 2 ( cisam7.1 ) correctly fails with ELOCKED when attempting to lock the same record ---------------------------------------------------------------------------- -- /* Sample code for File Locks */ #include "cisam.h" main() { int fd; char filename[80]; char recbuf[5]; strcpy( filename, "locktest" ); fd = isopen( filename, ISINOUT + ISEXCLLOCK ); if ( fd < 0 ) { printf("isopen iserrno = %d\\n", iserrno); exit(1); } printf("File locktest exclusively locked!\\n"); getchar(); isclose( fd ); } ---------------------------------------------------------------------------- -- /* Sample code for Record Locks */ #include "cisam.h" main() { int fd; char filename[80]; char recbuf[5]; strcpy( filename, "locktest" ); fd = isopen( filename, ISINOUT + ISMANULOCK ); if ( fd < 0 ) { printf("isopen iserrno = %d\\n", iserrno); exit(1); } if( isread( fd, (char *)&recbuf, ISFIRST+ISLOCK ) != 0 ) { printf(" isread iserrno = %d\\n", iserrno ); isclose( fd ); exit(1); } printf("Record: %5s locked by process locktest\\n", recbuf ); getchar(); isrelease( fd ); isclose( fd ); } Thanks in advance for any suggestions or light you may be able to shed. Heinz *********************************************************************** * Heinz Wittenbecher, Byte Designs Ltd. Voice: (604) 534-0722 * * heinz@bytedesigns.com Langley, BC CANADA Fax: (604) 534-2601 * * http://www.bytedesigns.com *