some common posix values

posix.js

module.exports = {
  stat: {
    S_IFMT   :  0170000,   //bit mask for the file type bit fields
    S_IFSOCK :  0140000,   //socket
    S_IFLNK  :  0120000,   //symbolic link
    S_IFREG  :  0100000,   //regular file
    S_IFBLK  :  0060000,   //block device
    S_IFDIR  :  0040000,   //directory
    S_IFCHR  :  0020000,   //character device
    S_IFIFO  :  0010000   //FIFO
  },
  errno: {
    EPERM   : 1,  // Operation not permitted
    ENOENT  : 2,  // No such file or directory
    ESRCH   : 3,  // No such process
    EINTR   : 4,  // Interrupted system call
    EIO     : 5,  // Input/output error
    ENXIO   : 6,  // Device not configured
    E2BIG   : 7,  // Argument list too long
    ENOEXEC : 8,  // Exec format error
    EBADF   : 9,  // Bad file descriptor
    ECHILD  : 10, // No child processes
    EDEADLK : 11, // Resource deadlock avoided

    EBUSY   : 16, // Device / Resource busy
    EEXIST  : 17, // File exists
    EXDEV   : 18, // Cross-device link
    ENODEV  : 19, // Operation not supported by device
    ENOTDIR : 20, // Not a directory
    EISDIR  : 21, // Is a directory
    EINVAL  : 22, // Invalid argument
    ENFILE  : 23, // Too many open files in system
    EMFILE  : 24  // Too many open files
  }
};