November 16, 2001 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 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)