blkdev/common/b_generic.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
 */

/*
 * b_generic.c :
 *      This file contains the functions for generic block devices
 *  for libsmedia.
 */

#include <stdio.h>
#include <unistd.h>
#include <locale.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/dkio.h>
#include <string.h>
#include "../../../library/inc/smedia.h"
#include "../../../library/inc/rmedia.h"
#include "../../../library/common/l_defines.h"

#define PERROR(string)  my_perror(gettext(string))

static void
my_perror(char *err_string)
{

    int error_no;
    if (errno == 0)
        return;

    error_no = errno;
    (void) fprintf(stderr, gettext(err_string));
    (void) fprintf(stderr, gettext(" : "));
    errno = error_no;
    perror("");
}

int32_t
_m_version_no(void)
{
    return (SM_BLKDEV_VERSION_1);
}

int32_t
_m_device_type(ushort_t ctype, ushort_t mtype)
{
    if (ctype == DKC_BLKDEV) {
        if (mtype == 0)
            return (0);
    }
    return (-1);
}


int32_t
_m_get_media_info(rmedia_handle_t *handle, void *ip)
{
    smmedium_prop_t *mp = (smmedium_prop_t *)ip;
    struct dk_geom      dkg;
    struct dk_minfo     minfo;
    enum dkio_state     state = DKIO_NONE;
    int         ret_val;

    if (handle == NULL) {
        DPRINTF("Null Handle\n");
        errno = EINVAL;
        return (-1);
    }
    if (handle->sm_signature != (int32_t)LIBSMEDIA_SIGNATURE) {
        DPRINTF2("Signature expected=0x%x, found=0x%x\n",
            LIBSMEDIA_SIGNATURE, handle->sm_signature);
        errno = EINVAL;
        return (-1);
    }

    if (ioctl(handle->sm_fd, DKIOCSTATE, &state) < 0) {
        PERROR("DKIOCSTATE failed");
        return (-1);
    }

    if (state != DKIO_INSERTED) {
        DPRINTF("No media.\n");
        mp->sm_media_type = SM_NOT_PRESENT;
        mp->sm_version = SMMEDIA_PROP_V_1;
        return (0);

    }

    ret_val = ioctl(handle->sm_fd, DKIOCGMEDIAINFO, &minfo);
    if (ret_val < 0) {
        DPRINTF("DKIOCGMEDIAINFO ioctl failed");
        return (ret_val);
    }
    ret_val = ioctl(handle->sm_fd, DKIOCGGEOM, &dkg);
    if (ret_val < 0) {
        DPRINTF("DKIOCGGEOM ioctl failed");
        return (ret_val);
    }

    mp->sm_media_type = SM_BLOCK;
    mp->sm_blocksize = minfo.dki_lbsize;
    mp->sm_capacity = minfo.dki_capacity;
    mp->sm_pcyl = dkg.dkg_pcyl;
    mp->sm_nhead = dkg.dkg_nhead;
    mp->sm_nsect = dkg.dkg_nsect;
    return (0);
}


/* ARGSUSED0 */

int32_t
_m_get_device_info(rmedia_handle_t *handle, void *ip)
{
    smdevice_info_t *mp = (smdevice_info_t *)ip;
    char *vendor_name, *product_name, *fw_version;

    if (handle == NULL) {
        DPRINTF("Null Handle\n");
        errno = EINVAL;
        return (-1);
    }
    if (handle->sm_signature != (int32_t)LIBSMEDIA_SIGNATURE) {
        DPRINTF2("Signature expected=0x%x, found=0x%x\n",
            LIBSMEDIA_SIGNATURE, handle->sm_signature);
        errno = EINVAL;
        return (-1);
    }
    vendor_name = (char *)malloc(1);
    if (vendor_name == NULL) {
    if (!errno)
        errno = ENOMEM;
        return (-1);
    }
    product_name = (char *)malloc(1);
    if (product_name == NULL) {
        free(vendor_name);
        if (!errno)
            errno = ENOMEM;
        return (-1);
    }

    fw_version = (char *)malloc(1);
    if (fw_version == NULL) {
        free(vendor_name);
        free(product_name);
            if (!errno)
        errno = ENOMEM;
        return (-1);
    }

    /* Note: we could potentially offer more here */
    vendor_name[0] = 0;
    product_name[0] = 0;
    fw_version[0] = 0;
    mp->sm_interface_type = IF_BLOCK;
    mp->sm_vendor_name = vendor_name;
    mp->sm_product_name = product_name;
    mp->sm_firmware_version = fw_version;
    return (0);
}

int32_t
_m_free_device_info(rmedia_handle_t *handle, void *ip)
{
    struct smdevice_info *dev_info = ip;

    /* Check for valid handle */
    if (handle == NULL) {
        DPRINTF("Null Handle\n");
        errno = EINVAL;
        return (-1);
    }
    if (handle->sm_signature != LIBSMEDIA_SIGNATURE) {
        DPRINTF("Invalid signature in handle.\n");
        errno = EINVAL;
        return (-1);
    }

    free(dev_info->sm_vendor_name);
    free(dev_info->sm_product_name);
    free(dev_info->sm_firmware_version);
    return (0);
}