GSP
Quick Navigator

Search Site

Unix VPS
A - Starter
B - Basic
C - Preferred
D - Commercial
MPS - Dedicated
Previous VPSs
* Sign Up! *

Support
Contact Us
Online Help
Handbooks
Domain Status
Man Pages

FAQ
Virtual Servers
Pricing
Billing
Technical

Network
Facilities
Connectivity
Topology Map

Miscellaneous
Server Agreement
Year 2038
Credits
 

USA Flag

 

 

Man Pages


Manual Reference Pages  -  FSIRAND (8)

NAME

fsirand - randomize inode generation numbers

CONTENTS

Synopsis
Description
Options
See Also
History
Authors
Caveats

SYNOPSIS

fsirand [-b] [-f] [-p] special [special ...]

DESCRIPTION

The fsirand utility installs random generation numbers on all the inodes for each file system specified on the command line by special. This increases the security of NFS-exported file systems by making it difficult to ‘‘guess’’ filehandles.

Note: newfs(8) now does the equivalent of fsirand itself so it is no longer necessary to run fsirand by hand on a new file system. It is only used to re-randomize or report on an existing file system.

The fsirand utility should only be used on an unmounted file system that has been checked with fsck(8) or a file system that is mounted read-only. The fsirand utility may be used on the root file system in single-user mode but the system should be rebooted via ‘‘reboot -n’’ afterwards.

OPTIONS

The available options are as follows:
-b Use the default block size (usually 512 bytes) instead of the value gleaned from the disklabel.
-f Force fsirand to run even if the file system on special is not marked as clean.
-p Print the current generation numbers for all inodes instead of generating new ones.

SEE ALSO

fs(5), fsck(8), newfs(8)

HISTORY

The fsirand utility appeared in SunOS 3.x.

This version of fsirand first appeared in
.Ox 2.1 .

A
.Fx version first appeared in
.Fx 2.2.5 .

AUTHORS


.An Todd C. Miller Aq Todd.Miller@courtesan.com

CAVEATS

Since fsirand allocates enough memory to hold all the inodes in a given cylinder group it may use a large amount of memory for large disks with few cylinder groups.
Search for    or go to Top of page |  Section 8 |  Main Index


Powered by GSP Visit the GSP FreeBSD Man Page Interface.
Output converted with manServer 1.07.