Inappropriate ioctl for device using Phi.pm on system call

To_Bz has asked for the wisdom of the Perl Monks concerning the following question:

Hello Monks, I'm getting the following error message from a perl module called Phi.pm.

I can not execute the PHI test: Phi: Inappropriate ioctl for device at /biologia-scratch3/mc.martinez297/programs/Unus-master/Unus/Test/Phi.pm line 63

First, I thought it was a problem related with permissions, so I changed them. This module has read and execution permissions.

So, then I looked the line 63, and I have the following:

61 chdir "$aln.phi";
62 system "$phi -f '$aln' &>$aln.phi/Phi.out";
63 LOGDIE "I can not execute the PHI test: $phi:\n$!" unless $?==0;
64 -s "Phi.log" or LOGDIE "PHI test ($phi -f '$aln' &>$aln.phi/Phi.out) returned an empty output, please check '$aln.phi/Phi.out' to inspect the reason s.";

I read the recomendations in http://www.perlmonks.org/?node_id=589324 , and they recommended to erase $! but I don't know what to do with $?==0, since $! and $? are "different types of error conditions"(http://perldoc.perl.org/perlvar.html)

However, I still don't understand what is happening with these variables.

I'm new in Perl, so I'll appreciate the help

Comment on Inappropriate ioctl for device using Phi.pm on system call

Replies are listed 'Best First'.
Re: Inappropriate ioctl for device using Phi.pm on system call by GotToBTru (Prior) on May 19, 2014 at 22:38 UTC
You need to find out what was in the variable $phi when then system command was run on line 62. That is the program that is generating the error. 1 Peter 4:10	[reply]
Fix $? check by dolmen (Beadle) on May 23, 2014 at 08:55 UTC
First, never put execution permission on a .pm! For the probable cause of your error, have a look at the manual for the "system" function (`perldoc -f system`): If you'd like to manually inspect "system"'s failure, you can check all possible failure modes by inspecting $? like this: if ($? == -1) { print "failed to execute: $!\n"; } elsif ($? & 127) { printf "child died with signal %d, %s coredump\n", ($? & 127), ($? & 128) ? 'with' : 'without'; } else { printf "child exited with value %d\n", $? >> 8; }	[reply] [d/l]
Re: Inappropriate ioctl for device using Phi.pm on system call by aitap (Curate) on May 25, 2014 at 10:26 UTC
"Inappropriate ioctl for device" is not the cause of the error since you don't do any ioctl yourself on any device. $! sometimes gets set so a non-zero value even if program works normally (for example, on my machine `perl -E'require DBI; say $!'` prints `No such file or directory`). What you need to do is to inspect the `$aln.phi/Phi.out` file (it's where PHI's STDOUT ans STDERR were redirected). You can edit line 63 to print `$?` and `$aln.phi` if you need to know their values.	[reply] [d/l] [select]


XP is just a number
	PerlMonks