/*

 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 *

 * See the COPYRIGHT file distributed with this work for additional

 * information regarding copyright ownership.

 */

/*! \file */

#include <config.h>

#include <stdbool.h>

#include <isc/result.h>

#include <isc/strerror.h>

#include <isc/util.h>

#include "errno2result.h"

/*%

 * Convert a POSIX errno value into an isc_result_t.  The

 * list of supported errno values is not complete; new users

 * of this function should add any expected errors that are

 * not already there.

 */

isc_result_t

isc___errno2result(int posixerrno, bool dolog,

		   const char *file, unsigned int line)

{

	char strbuf[ISC_STRERRORSIZE];

	switch (posixerrno) {

	case ENOTDIR:

	case ELOOP:

	case EINVAL:		/* XXX sometimes this is not for files */

	case ENAMETOOLONG:

	case EBADF:

	case EISDIR:

		return (ISC_R_INVALIDFILE);

	case ENOENT:

		return (ISC_R_FILENOTFOUND);

	case EACCES:

	case EPERM:

		return (ISC_R_NOPERM);

	case EEXIST:

		return (ISC_R_FILEEXISTS);

	case EIO:

		return (ISC_R_IOERROR);

	case ENOMEM:

		return (ISC_R_NOMEMORY);

	case ENFILE:

	case EMFILE:

		return (ISC_R_TOOMANYOPENFILES);

#ifdef EDQUOT

	case EDQUOT:

		return (ISC_R_DISCQUOTA);

#endif

	case ENOSPC:

		return (ISC_R_DISCFULL);

#ifdef EOVERFLOW

	case EOVERFLOW:

		return (ISC_R_RANGE);

#endif

	case EPIPE:

#ifdef ECONNRESET

	case ECONNRESET:

#endif

#ifdef ECONNABORTED

	case ECONNABORTED:

#endif

		return (ISC_R_CONNECTIONRESET);

#ifdef ENOTCONN

	case ENOTCONN:

		return (ISC_R_NOTCONNECTED);

#endif

#ifdef ETIMEDOUT

	case ETIMEDOUT:

		return (ISC_R_TIMEDOUT);

#endif

#ifdef ENOBUFS

	case ENOBUFS:

		return (ISC_R_NORESOURCES);

#endif

#ifdef EAFNOSUPPORT

	case EAFNOSUPPORT:

		return (ISC_R_FAMILYNOSUPPORT);

#endif

#ifdef ENETDOWN

	case ENETDOWN:

		return (ISC_R_NETDOWN);

#endif

#ifdef EHOSTDOWN

	case EHOSTDOWN:

		return (ISC_R_HOSTDOWN);

#endif

#ifdef ENETUNREACH

	case ENETUNREACH:

		return (ISC_R_NETUNREACH);

#endif

#ifdef EHOSTUNREACH

	case EHOSTUNREACH:

		return (ISC_R_HOSTUNREACH);

#endif

#ifdef EADDRINUSE

	case EADDRINUSE:

		return (ISC_R_ADDRINUSE);

#endif

	case EADDRNOTAVAIL:

		return (ISC_R_ADDRNOTAVAIL);

	case ECONNREFUSED:

		return (ISC_R_CONNREFUSED);

	default:

		if (dolog) {

			isc__strerror(posixerrno, strbuf, sizeof(strbuf));

			UNEXPECTED_ERROR(file, line, "unable to convert errno "

					 "to isc_result: %d: %s",

					 posixerrno, strbuf);

		}

		/*

		 * XXXDCL would be nice if perhaps this function could

		 * return the system's error string, so the caller

		 * might have something more descriptive than "unexpected

		 * error" to log with.

		 */

		return (ISC_R_UNEXPECTED);

	}

}