filer/src/errors.js

var errors = {};
[
  /**
   * node.js errors - we only use some of these, add as needed.
   */
  //'-1:UNKNOWN:unknown error',
  //'0:OK:success',
  //'1:EOF:end of file',
  //'2:EADDRINFO:getaddrinfo error',
  '3:EACCES:permission denied',
  //'4:EAGAIN:resource temporarily unavailable',
  //'5:EADDRINUSE:address already in use',
  //'6:EADDRNOTAVAIL:address not available',
  //'7:EAFNOSUPPORT:address family not supported',
  //'8:EALREADY:connection already in progress',
  '9:EBADF:bad file descriptor',
  '10:EBUSY:resource busy or locked',
  //'11:ECONNABORTED:software caused connection abort',
  //'12:ECONNREFUSED:connection refused',
  //'13:ECONNRESET:connection reset by peer',
  //'14:EDESTADDRREQ:destination address required',
  //'15:EFAULT:bad address in system call argument',
  //'16:EHOSTUNREACH:host is unreachable',
  //'17:EINTR:interrupted system call',
  '18:EINVAL:invalid argument',
  //'19:EISCONN:socket is already connected',
  //'20:EMFILE:too many open files',
  //'21:EMSGSIZE:message too long',
  //'22:ENETDOWN:network is down',
  //'23:ENETUNREACH:network is unreachable',
  //'24:ENFILE:file table overflow',
  //'25:ENOBUFS:no buffer space available',
  //'26:ENOMEM:not enough memory',
  '27:ENOTDIR:not a directory',
  '28:EISDIR:illegal operation on a directory',
  //'29:ENONET:machine is not on the network',
  // errno 30 skipped, as per https://github.com/rvagg/node-errno/blob/master/errno.js
  //'31:ENOTCONN:socket is not connected',
  //'32:ENOTSOCK:socket operation on non-socket',
  //'33:ENOTSUP:operation not supported on socket',
  '34:ENOENT:no such file or directory',
  //'35:ENOSYS:function not implemented',
  //'36:EPIPE:broken pipe',
  //'37:EPROTO:protocol error',
  //'38:EPROTONOSUPPORT:protocol not supported',
  //'39:EPROTOTYPE:protocol wrong type for socket',
  //'40:ETIMEDOUT:connection timed out',
  //'41:ECHARSET:invalid Unicode character',
  //'42:EAIFAMNOSUPPORT:address family for hostname not supported',
  // errno 43 skipped, as per https://github.com/rvagg/node-errno/blob/master/errno.js
  //'44:EAISERVICE:servname not supported for ai_socktype',
  //'45:EAISOCKTYPE:ai_socktype not supported',
  //'46:ESHUTDOWN:cannot send after transport endpoint shutdown',
  '47:EEXIST:file already exists',
  //'48:ESRCH:no such process',
  //'49:ENAMETOOLONG:name too long',
  '50:EPERM:operation not permitted',
  '51:ELOOP:too many symbolic links encountered',
  //'52:EXDEV:cross-device link not permitted',
  '53:ENOTEMPTY:directory not empty',
  //'54:ENOSPC:no space left on device',
  '55:EIO:i/o error',
  //'56:EROFS:read-only file system',
  //'57:ENODEV:no such device',
  //'58:ESPIPE:invalid seek',
  //'59:ECANCELED:operation canceled',

  /**
   * Filer specific errors
   */
  '1000:ENOTMOUNTED:not mounted',
  '1001:EFILESYSTEMERROR:missing super node, use \'FORMAT\' flag to format filesystem.',
  '1002:ENOATTR:attribute does not exist'

].forEach(function(e) {
  e = e.split(':');
  var errno = +e[0];
  var errName = e[1];
  var defaultMessage = e[2];

  function FilerError(msg, path) {
    Error.call(this);

    this.name = errName;
    this.code = errName;
    this.errno = errno;
    this.message = msg || defaultMessage;
    if(path) {
      this.path = path;
    }
    this.stack = (new Error(this.message)).stack;
  }
  FilerError.prototype = Object.create(Error.prototype);
  FilerError.prototype.constructor = FilerError;
  FilerError.prototype.toString = function() {
    var pathInfo = this.path ? (', \'' + this.path + '\'') : '';
    return this.name + ': ' + this.message + pathInfo;
  };

  // We expose the error as both Errors.EINVAL and Errors[18]
  errors[errName] = errors[errno] = FilerError;
});

module.exports = errors;