module Fcntl
  @@@
  constants do |c|
    c.include 'fcntl.h'

    c.const 'F_DUPFD'
    c.const 'F_GETFD'
    c.const 'F_GETLK'
    c.const 'F_SETFD'
    c.const 'F_GETFL'
    c.const 'F_SETFL'
    c.const 'F_SETLK'
    c.const 'F_SETLKW'
    c.const 'FD_CLOEXEC'
    c.const 'F_RDLCK'
    c.const 'F_UNLCK'
    c.const 'F_WRLCK'
    c.const 'O_CREAT'
    c.const 'O_EXCL'
    c.const 'O_NOCTTY'
    c.const 'O_TRUNC'
    c.const 'O_APPEND'
    c.const 'O_NONBLOCK'
    c.const 'O_NDELAY'
    c.const 'O_RDONLY'
    c.const 'O_RDWR'
    c.const 'O_WRONLY'
    c.const 'O_ACCMODE'
  end
  @@@
end