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Message: [QUOTE="Pioneer, post: 4800616"] I have found a problem in Perl 5.8.4 on Debian Linux where F_SETLKW is showing up with value "14" when the kernel is expecting value "7". Details below: I have been struggling with getting fcntl locking working for 3 days. Specifically with using fcntl to do exclusive byte range locking on a file in Perl/Linux. I had it working, however it seemed no matter what range I locked, the entire file locked and I could not figure out why. Every piece of example code or module I could find caused the same problem. Finally I wrote test code in C that worked fine. I then started comparing the values of all of the defined variables in C and perl. This is what I found: PERL v5.8.4: F_WRLCK: 1 SEEK_SET: 0 F_SETLKW: 14 C: F_WRLCK: 1 SEEK_SET: 0 F_SETLKW: 7 I forced F_SETLKW in Perl to be 7 and everything worked as it should. I understand that the flock structures change from machine to machine, etc. but I saw no comments anywhere on the web saying you had to make sure these values were also proper. Is this due to installing a predefined Debian package rather than compiling Perl from scratch, a bug in the Perl install itself, me importing FCNTL data incorrectly, or should I just not have expected this value to be correct? (Details/Sample code shown below) Thanks, -John Details: Debian, Sarge Distribution, Stable, Perl v5.8.4, Linux Kernels, same issue on both v2.6.13 and v2.4.26 Code: #!/usr/bin/perl use Fcntl; use POSIX qw(:unistd_h :errno_h); use Fcntl qw(:DEFAULT :flock); use strict; print "F_SETLKW: ".F_SETLKW."\n"; I also tried removing different use statements above, all the same results. [/QUOTE]

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