32v 1m mkfs

MKFS(1M) UNIX Programmer's Manual MKFS(1M)

NAME

    mkfs - construct a file system

SYNOPSIS

    /etc/mkfs special proto

DESCRIPTION

    _M_k_f_s constructs a file system by writing on the special file
    _s_p_e_c_i_a_l according to the directions found in the prototype
    file _p_r_o_t_o. The prototype file contains tokens separated by
    spaces or new lines.  The first token is the name of a file
    to be copied onto block zero as the bootstrap program, see
    _b_p_r_o_c(8).  The second token is a number specifying the size
    of the created file system.  Typically it will be the number
    of blocks on the device, perhaps diminished by space for
    swapping.  The next token is the number of i-nodes in the
    i-list.  The next set of tokens comprise the specification
    for the root file.  File specifications consist of tokens
    giving the mode, the user-id, the group id, and the initial
    contents of the file.  The syntax of the contents field
    depends on the mode.

    The mode token for a file is a 6 character string.  The
    first character specifies the type of the file.  (The char-
    acters -bcd specify regular, block special, character spe-
    cial and directory files respectively.) The second character
    of the type is either u or - to specify set-user-id mode or
    not.  The third is g or - for the set-group-id mode.  The
    rest of the mode is a three digit octal number giving the
    owner, group, and other read, write, execute permissions,
    see _c_h_m_o_d(1).

    Two decimal number tokens come after the mode; they specify
    the user and group ID's of the owner of the file.

    If the file is a regular file, the next token is a pathname
    whence the contents and size are copied.

    If the file is a block or character special file, two
    decimal number tokens follow which give the major and minor
    device numbers.

    If the file is a directory, _m_k_f_s makes the entries .  and ..
    and then reads a list of names and (recursively) file
    specifications for the entries in the directory.  The scan
    is terminated with the token $.

    If the prototype file cannot be opened and its name consists
    of a string of digits, _m_k_f_s builds a file system with a sin-
    gle empty directory on it.  The size of the file system is
    the value of _p_r_o_t_o interpreted as a decimal number.  The
    number of i-nodes is calculated as a function of the
    filsystem size.  The boot program is left uninitialized.

    A sample prototype specification follows:

         /usr/mdec/uboot
         4872 55
         d--777 3 1
         usr  d--777 3 1
              sh   ---755 3 1 /bin/sh
              ken  d--755 6 1
                   $
              b0   b--644 3 1 0 0
              c0   c--644 3 1 0 0
              $
         $

SEE ALSO

    filsys(5), dir(5), bproc(8)

BUGS

    There should be some way to specify links.  There should be
    some way to specify bad blocks.