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fsirand (8)
  • fsirand (1) ( Solaris man: Команды и прикладные программы пользовательского уровня )
  • >> fsirand (8) ( FreeBSD man: Команды системного администрирования )

  • BSD mandoc
     

    NAME

    
    
    fsirand
    
     - randomize inode generation numbers
    
     
    

    SYNOPSIS

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

    DESCRIPTION

    The 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 itself so it is no longer necessary to run by hand on a new file system. It is only used to re-randomize or report on an existing file system.

    The 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 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 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.

     

    CAVEATS

    Since 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.  

    SEE ALSO

    fs(5), fsck(8), newfs(8)  

    HISTORY

    The utility appeared in SunOS 3.x.

    This version of 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


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    OPTIONS
    CAVEATS
    SEE ALSO
    HISTORY
    AUTHORS


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