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Hello all.
AFAIK, you can't do that. When you fork everything is copied, including
the UID.
To achieve something similar, you need to launch another process (but
you'll need to be root to launch it as another user)
Regards,
David Santiago
On Fri, 11 Mar 2016 20:22:34 +0200
Lars Noodén <lars.noo...@gmail.com> wrote:
> If I have the code below to fork a child process, how would the right
> way be to fork as a different user? I gather that fork() itself does
> not support that, so some other method must be used.
>
> Regards,
> Lars
>
> -----
>
> #!/usr/bin/perl
>
> use strict;
> use warnings;
> use English; # for $UID and such
>
> my $old_uid = $UID;
>
> $UID = 1000;
>
> my $pid = fork();
>
> unless( $pid ){
> print qq(\tThis is a child process, PID $$\n);
> print qq(\tThe child UID is $UID \n);
>
> sleep 5;
>
> exit 0;
> }
>
> $UID = $old_uid;
>
> print qq(This is the parent process PID $PID and a child PID is
> $pid\n); print qq(The parent is running as UID $UID \n);
>
> sleep 5;
>
> exit 0;
>
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