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package run_program; # $Id$
use diagnostics;
use strict;
use log;
1;
sub run($@) { rooted('', @_) }
sub rooted {
my ($root, $name, @args) = @_;
my $str = ref $name ? $name->[0] : $name;
log::l("running: $str @args" . ($root ? " with root $root" : ""));
return 1 if $root && $<;
$root ? $root .= '/' : ($root = '');
if (my $pid = fork) {
waitpid $pid, 0;
return $? == 0;
}
{
my ($stdout, $stdoutm, $stderr, $stderrm);
($stdoutm, $stdout, @args) = @args if $args[0] =~ /^>>?$/;
($stderrm, $stderr, @args) = @args if $args[0] =~ /^2>>?$/;
open STDIN, "/dev/null" or die "can't open /dev/null as stdin";
if ($stderr) {
$stderrm =~ s/2//;
open STDERR, "$stderrm $root$stderr" or die "run_program can't output in $root$stderr (mode `$stderrm')";
} elsif ($::isInstall) {
open STDERR, ">> /tmp/ddebug.log" or open STDOUT, ">> /dev/tty7" or die "run_program can't log, give me access to /tmp/ddebug.log";
}
if ($stdout) {
open STDOUT, "$stdoutm $root$stdout" or die "run_program can't output in $root$stdout (mode `$stdoutm')";
} elsif ($::isInstall) {
open STDOUT, ">> /tmp/ddebug.log" or open STDOUT, ">> /dev/tty7" or die "run_program can't log, give me access to /tmp/ddebug.log";
}
$root and chroot $root;
chdir "/";
if (ref $name) {
unless (exec { $name->[0] } $name->[1], @args) {
log::l("exec of $name->[0] failed: $!");
c::_exit(1);
}
} else {
unless (exec $name, @args) {
log::l("exec of $name failed: $!");
c::_exit(1);
}
}
}
}
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