fsirand(8) - NetBSD Manual Pages

Command: Section: Arch: Collection:  
FSIRAND(8)              NetBSD System Manager's Manual              FSIRAND(8)


NAME
fsirand -- install random inode generation numbers in a filesystem
SYNOPSIS
fsirand [-F] [-p] [-x constant] special
DESCRIPTION
fsirand writes random inode generation numbers for all the inodes on device special. These random numbers make the NFS filehandles less pre- dictable, increasing security of exported filesystems. fsirand should be run on a clean and unmounted filesystem. The options are as follows: -F Indicates that special is a file system image, rather than a device name. special will be accessed `as-is', without requiring that it is a raw character device and without attempting to read a disklabel. -p Print the current inode generation numbers; the filesystem is not modified. -x constant Exclusive-or the given constant with the random number used in the generation process. fsirand exits zero on success, non-zero on failure. If fsirand receives a SIGINFO signal, statistics on the amount of work completed and estimated completion time (in minutes:seconds) will be written to the standard error output.
SEE ALSO
fsck_ffs(8), newfs(8)
HISTORY
A fsirand utility appeared in NetBSD 1.3.
AUTHORS
Christos Zoulas <christos@NetBSD.org>. NetBSD 8.1 September 11, 2016 NetBSD 8.1
Powered by man-cgi 1.15, Panagiotis Christias
Modified for NetBSD by Kimmo Suominen