fsirand(8)                          CLIX                          fsirand(8)



  NAME

    fsirand, ffsfsirand - Installs random inode generation numbers

  SYNOPSIS

    fsirand [-p] special

    ffsfsirand [-p] special

  FLAGS

    -p   Displays, but does not change, the generation numbers for all the
         inodes.

  DESCRIPTION

    The fsirand command installs random inode generation numbers on all the
    inodes on device special.  This helps increase the security of file
    systems exported by the Network File System (NFS).

    The fsirand command must be used only on an unmounted file system that has
    been checked with the fsck command.  The only exception is that it can be
    used on the root file system in single-user mode, if the system is
    immediately rebooted afterward.

    The ffsfsirand command is used for randomizing the generation numbers of
    Fast File Systems (FFS).  It is normally started by fsirand when fsirand
    is invoked on an FFS.

  EXAMPLES

    1.  To install inode generation numbers on all the inodes on device
        your_device, key in the following:

        fsirand your_device


    2.  To display the inode generation numbers on device your_device, key in
        the following:

        fsirand -p your_device


  DIAGNOSTICS

    File system open
           Could not open the device specified.

    Seek to superblock failed
    Read of superblock failed



  2/94 - Intergraph Corporation                                              1

  fsirand(8)                          CLIX                          fsirand(8)



    Not a superblock
    lseek to address failed
           The specified special device file does not contain a valid file
           system.

  EXIT VALUES

    The command exits with a 0 if successful.  If unsuccessful, the command
    exits with a 1.

  RELATED INFORMATION

    Commands:  fsck(8), ffsfsck(8)









































  2                                              Intergraph Corporation - 2/94