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fix stdin/sdout redirection

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This commit is contained in:
Dietmar Maurer 2011-10-19 07:29:41 +02:00
parent b749019d13
commit f38995ab14
1 changed files with 14 additions and 3 deletions
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17
data/PVE/Tools.pm
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@ -225,6 +225,15 @@ sub run_command {
local $ENV{LVM_SUPPRESS_FD_WARNINGS} = "1";
$pid = open3($writer, $reader, $error, @$cmd) || die $!;
# if we pipe fron STDIN, open3 closes STDIN, so we we
# a perl warning "Filehandle STDIN reopened as GENXYZ .. "
# as soon as we open a new file.
# to avoid that we open /dev/null
if (!ref($writer) && !defined(fileno(STDIN))) {
POSIX::close(0);
open(STDIN, "</dev/null");
}
};
my $err = $@;
@ -241,11 +250,13 @@ sub run_command {
local $SIG{ALRM} = sub { die "got timeout\n"; } if $timeout;
$oldtimeout = alarm($timeout) if $timeout;
print $writer $input if defined $input;
close $writer;
if (ref($writer)) {
print $writer $input if defined $input;
close $writer;
}
my $select = new IO::Select;
$select->add($reader);
$select->add($reader) if ref($reader);
$select->add($error);
my $outlog = '';