tmpnam is not a builtin perl function, but is available with use POSIX qw(tmpnam);. You seem to use more control struct than is needed, as if you expect the system to need to retry a few times before giving you a file. It would be best to simply call tmpnam() once in sysopen(FH, POSIX::tmpnam(), O_RDWR|O_CREAT|O_EXCL) or die $!;

You might like to try IO::File:

use IO::File;
my $fh = IO::File->new_tmpfile();

[download]
and you never need to know its name.

Update: Added import list for POSIX.

Update2: Scratched blunder, here is something that gets by tye's astute objection to your idiom:

use POSIX;
my ($tmpfh, $name);
do {
    $name = POSIX::tmpnam()
} until
    sysopen( $tmpfh, $name, O_RDWR|O_CREAT|O_EXCL)
    or                       # if error, then
        $! !~ m/File exists/ # try again if bad name
        &&  die $!;          # else die

[download]
This depends strongly on lazy evaluation of logical operators.

After Compline,
Zaxo

In reply to Re: do until sysopen() by Zaxo
in thread do until sysopen() by Anonymous Monk

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