Date: Mon, 30 Aug 1999 17:28:28 +0000 From: Francis Jordan <frankrj@netscape.net> To: freebsd-stable@FreeBSD.ORG Cc: jkh@zippy.cdrom.com Subject: Re: Interesting ways to print 3000 spaces... Message-ID: <37CABF3C.7A30C7B4@netscape.net> References: <99Aug30.091841est.40333@border.alcanet.com.au>
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Jordan K. Hubbard" <jkh@zippy.cdrom.com> wrote: > > Um, has everyone here gone INSANE? Well it seems that only root can crash the system that way, unless the default permissions on /dev/vn0* are changed. % ls -l /dev/vn* brw-r----- 1 root operator 15, 0x00010002 Dec 29 1998 /dev/vn0 brw-r----- 1 root operator 15, 0 Dec 29 1998 /dev/vn0a brw-r----- 1 root operator 15, 1 Dec 29 1998 /dev/vn0b brw-r----- 1 root operator 15, 2 Dec 29 1998 /dev/vn0c brw-r----- 1 root operator 15, 3 Dec 29 1998 /dev/vn0d brw-r----- 1 root operator 15, 4 Dec 29 1998 /dev/vn0e brw-r----- 1 root operator 15, 5 Dec 29 1998 /dev/vn0f brw-r----- 1 root operator 15, 6 Dec 29 1998 /dev/vn0g brw-r----- 1 root operator 15, 7 Dec 29 1998 /dev/vn0h brw-r----- 1 root operator 15, 0x00020002 Dec 29 1998 /dev/vn0s1 brw-r----- 1 root operator 15, 0x00030002 Dec 29 1998 /dev/vn0s2 brw-r----- 1 root operator 15, 0x00040002 Dec 29 1998 /dev/vn0s3 brw-r----- 1 root operator 15, 0x00050002 Dec 29 1998 /dev/vn0s4 But then if you're root, there are hundreds of other ways to crash the system... For example, # vnconfig -c /dev/vn0a foo # rm foo # vnconfig -u /dev/vn0a <KABOOM> (This used to crash 3.1; might still work on -stable, unless fixed recently.) Frank To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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