Could be. -----Original Message----- From: fpc-pascal-boun...@lists.freepascal.org [mailto:fpc-pascal-boun...@lists.freepascal.org] On Behalf Of Mattias Gaertner Sent: Sunday, March 1, 2015 7:52 AM To: fpc-pascal@lists.freepascal.org Subject: [fpc-pascal] the unexplained 666
Hi, Today I stumbled (again) over TFileStream and it contains the constant 438: constructor TFileStream.Create(const AFileName: string; Mode: Word); begin Create(AFileName,Mode,438); end; You need several searches to find out what the 438 actually is. For example its fpdoc page does not explains it: http://lazarus-ccr.sourceforge.net/docs/rtl/classes/tfilestream.create.html Same for the called FileCreate: http://lazarus-ccr.sourceforge.net/docs/rtl/sysutils/filecreate.html Under Windows the Rights are not used. Under Unix it calls fpOpen, which only tells about "permissions": http://lazarus-ccr.sourceforge.net/docs/rtl/baseunix/fpopen.html Then it calls 'FPC_SYSC_OPEN', which under Linux calls syscall 'open', which after a search reveals, that the mode is a bit field using the S_I* constants, which are usually written in binary, octal or hexadecimal. The octal value of 438 is &666, which is read/write permissions for other/group/owner. Why not write &666? Maybe some religious reasons? ;) Mattias _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
