Hello Monks,

I'm using fork() exec() and socketpair() to start a child and capture its output, something like
socketpair($r_stdout, $w_stdout, AF_UNIX, SOCK_STREAM, PF_UNSPEC);
socketpair($r_stderr, $w_stderr, AF_UNIX, SOCK_STREAM, PF_UNSPEC);

if(fork()){
                close $w_stdout;
                #read from $r_stdout etc
}else{
                my $so_fd=fileno($w_stdout);
                open STDOUT, ">&$so_fd";
                exec('something') or die;
}

[download]


The problem I have is I have to exec and capture the output of a script which writes to FD3, something like perl -e 'open STDOUT, ">&3";print  "hello, world\n"'
so I'd like to open fd3 to one half of a socketpair - is this possible? The loose equivalent of bash exec 3>/tmp/z

I guess I'd have to be careful not to clobber any of my socketpairs...

Thanks!

In reply to working with files by number by flipper

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