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Re: perl 5.6.1 on AIX 5.1 doesn't open() a $var, only real path

by bluto (Curate)
on May 19, 2005 at 20:47 UTC ( #458782=note: print w/replies, xml ) Need Help??


in reply to perl 5.6.1 on AIX 5.1 doesn't open() a $var, only real path

su - softwareUser -c /path/to/my/script.pl

This should work, but you may also be able to use: fork, POSIX::setuid, exec(). I've used this on with perl 5.8.5 on AIX.

Opening to a file with a variable should work fine. You have this...

my $confgiFile = '/path/to/configFile'; open ( CONFIG, ">$config" ) or die "FATAL :: failure configuring - $!\ +n\n"; print CONFIG $config; # $config is populated much earlier close(CONFIG);

So you are setting $confgiFile to a path, but you are opening $config. Are these two the same here (e.g. is this a typo)? One thing I'd suggest is to put the file name that you pass to 'open' in the 'die' as well so you can sanity check what it is trying to do. The only other thing I can suggest is to check your umask just before the open, though I suspect it's probably ok.

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Re^2: (jptxs) perl 5.6.1 on AIX 5.1 doesn't open() a $var, only real path
by jptxs (Curate) on May 20, 2005 at 13:18 UTC

    Yes, that was a typo. I did set a bunch of debug in the script and everything looked fine with the path being passed.

    what could the umask do? If I create a file I own, I can't see how a umask would prevent then editing that file myself. Maybe I'm missing something... I will check it, though; and see what's happening there.

    We speak the way we breathe. --Fugazi
      what could the umask do? If I create a file I own, I can't see how a umask would prevent then editing that file myself.

      On AIX I've seen problems with giving garbage mode bits (e.g 0) to the equivalent of a sysopen call cause problems later accessing the file, even for the owner. I thought that there was a slight chance that perhaps a bad umask could cause the same problem (though very unlikely). But even why I try that I can't reproduce it (i.e. this works fine for me on perl 5.8.5...)

      % umask 777 % perl -le 'open my $fh, ">foo" or die "open:$!"; print $fh "hello" or + die "print:$!"; close $fh or die "close:$!"'

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