/*-
 * Copyright (c) 2006 Marcel Moolenaar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <efi.h>
#include <efilib.h>

EFI_STATUS
errno_to_efi_status(int errno)
{
        EFI_STATUS status;

        switch (errno) {
        case EPERM:
                status = EFI_ACCESS_DENIED;
                break;

        case EOVERFLOW:
                status = EFI_BUFFER_TOO_SMALL;
                break;

        case EIO:
                status = EFI_DEVICE_ERROR;
                break;

        case EINVAL:
                status = EFI_INVALID_PARAMETER;
                break;

        case ESTALE:
                status = EFI_MEDIA_CHANGED;
                break;

        case ENXIO:
                status = EFI_NO_MEDIA;
                break;

        case ENOENT:
                status = EFI_NOT_FOUND;
                break;

        case ENOMEM:
                status = EFI_OUT_OF_RESOURCES;
                break;

        case ENOTSUP:
        case ENODEV:
                status = EFI_UNSUPPORTED;
                break;

        case ENOSPC:
                status = EFI_VOLUME_FULL;
                break;

        case EACCES:
                status = EFI_WRITE_PROTECTED;
                break;

        case 0:
                status = EFI_SUCCESS;
                break;

        default:
                status = EFI_DEVICE_ERROR;
                break;
        }

        return (status);
}

int
efi_status_to_errno(EFI_STATUS status)
{
        int errno;

        switch (status) {
        case EFI_ACCESS_DENIED:
                errno = EPERM;
                break;

        case EFI_BUFFER_TOO_SMALL:
                errno = EOVERFLOW;
                break;

        case EFI_DEVICE_ERROR:
        case EFI_VOLUME_CORRUPTED:
                errno = EIO;
                break;

        case EFI_INVALID_PARAMETER:
                errno = EINVAL;
                break;

        case EFI_MEDIA_CHANGED:
                errno = ESTALE;
                break;

        case EFI_NO_MEDIA:
                errno = ENXIO;
                break;

        case EFI_NOT_FOUND:
                errno = ENOENT;
                break;

        case EFI_OUT_OF_RESOURCES:
                errno = ENOMEM;
                break;

        case EFI_UNSUPPORTED:
                errno = ENODEV;
                break;

        case EFI_VOLUME_FULL:
                errno = ENOSPC;
                break;

        case EFI_WRITE_PROTECTED:
                errno = EACCES;
                break;

        case 0:
                errno = 0;
                break;

        default:
                errno = EDOOFUS;
                break;
        }

        return (errno);
}