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 predictable, 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>.