root/sbin/natacontrol/natacontrol.c
/*-
 * Copyright (c) 2000 - 2006 Søren Schmidt <sos@FreeBSD.org>
 * 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,
 *    without modification, immediately at the beginning of the file.
 * 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.
 *
 * $FreeBSD: src/sbin/atacontrol/atacontrol.c,v 1.42 2006/03/15 19:32:43 sos Exp $
 */

#include <sys/nata.h>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <err.h>

#include <sysexits.h>
#include <unistd.h>

static const char *
mode2str(int mode)
{
        switch (mode & 0xff) {
        case ATA_PIO: return "BIOSPIO";
        case ATA_PIO0: return "PIO0";
        case ATA_PIO1: return "PIO1";
        case ATA_PIO2: return "PIO2";
        case ATA_PIO3: return "PIO3";
        case ATA_PIO4: return "PIO4";
        case ATA_WDMA0: return "WDMA0";
        case ATA_WDMA1: return "WDMA1";
        case ATA_WDMA2: return "WDMA2";
        case ATA_UDMA0: return "UDMA0";
        case ATA_UDMA1: return "UDMA1";
        case ATA_UDMA2: return "UDMA33";
        case ATA_UDMA3: return "UDMA44";
        case ATA_UDMA4: return "UDMA66";
        case ATA_UDMA5: return "UDMA100";
        case ATA_UDMA6: return "UDMA133";
        case ATA_SA150: return "SATA150";
        case ATA_SA300: return "SATA300";
        case ATA_USB: return "USB";
        case ATA_USB1: return "USB1";
        case ATA_USB2: return "USB2";
        case ATA_DMA: return "BIOSDMA";
        default: return "???";
        }
}

static const char *
satarev2str(int mode)
{
        switch ((mode & 0xff00) >> 8) {
        case 0: return "";
        case 1: return "SATA 1.5Gb/s";
        case 2: return "SATA 3Gb/s";
        case 3: return "SATA 6Gb/s";
        case 0xff: return "SATA";
        default: return "???";
        }
}

static int
str2mode(char *str)
{
        if (!strcasecmp(str, "BIOSPIO")) return ATA_PIO;
        if (!strcasecmp(str, "PIO0")) return ATA_PIO0;
        if (!strcasecmp(str, "PIO1")) return ATA_PIO1;
        if (!strcasecmp(str, "PIO2")) return ATA_PIO2;
        if (!strcasecmp(str, "PIO3")) return ATA_PIO3;
        if (!strcasecmp(str, "PIO4")) return ATA_PIO4;
        if (!strcasecmp(str, "WDMA0")) return ATA_WDMA0;
        if (!strcasecmp(str, "WDMA1")) return ATA_WDMA1;
        if (!strcasecmp(str, "WDMA2")) return ATA_WDMA2;
        if (!strcasecmp(str, "UDMA0")) return ATA_UDMA0;
        if (!strcasecmp(str, "UDMA16")) return ATA_UDMA0;
        if (!strcasecmp(str, "UDMA1")) return ATA_UDMA1;
        if (!strcasecmp(str, "UDMA25")) return ATA_UDMA1;
        if (!strcasecmp(str, "UDMA2")) return ATA_UDMA2;
        if (!strcasecmp(str, "UDMA33")) return ATA_UDMA2;
        if (!strcasecmp(str, "UDMA3")) return ATA_UDMA3;
        if (!strcasecmp(str, "UDMA44")) return ATA_UDMA3;
        if (!strcasecmp(str, "UDMA4")) return ATA_UDMA4;
        if (!strcasecmp(str, "UDMA66")) return ATA_UDMA4;
        if (!strcasecmp(str, "UDMA5")) return ATA_UDMA5;
        if (!strcasecmp(str, "UDMA100")) return ATA_UDMA5;
        if (!strcasecmp(str, "UDMA6")) return ATA_UDMA6;
        if (!strcasecmp(str, "UDMA133")) return ATA_UDMA6;
        if (!strcasecmp(str, "BIOSDMA")) return ATA_DMA;
        return -1;
}

static void
usage(void)
{
        fprintf(stderr,
                "usage:  natacontrol <command> args:\n"
                "        natacontrol list\n"
                "        natacontrol info channel\n"
                "        natacontrol attach channel\n"
                "        natacontrol detach channel\n"
                "        natacontrol reinit channel\n"
                "        natacontrol create type [interleave] disk0 ... diskN\n"
                "        natacontrol delete array\n"
                "        natacontrol addspare array disk\n"
                "        natacontrol rebuild array\n"
                "        natacontrol status array\n"
                "        natacontrol mode device [mode]\n"
                "        natacontrol feature device apm apmlevel\n"
                "        natacontrol feature device acoustic soundsupplevel\n"
                "        natacontrol cap device\n"
                "        natacontrol spindown device [seconds]\n"
        );
        exit(EX_USAGE);
}

static int
version(int ver)
{
        int bit;

        if (ver == 0xffff)
                return 0;
        for (bit = 15; bit >= 0; bit--)
                if (ver & (1<<bit))
                        return bit;
        return 0;
}

static void
param_print(struct ata_params *parm)
{
        printf("<%.40s/%.8s> ", parm->model, parm->revision);
        if (parm->satacapabilities && parm->satacapabilities != 0xffff) {
                if (parm->satacapabilities & ATA_SATA_GEN2)
                        printf("SATA revision 2.x\n");
                else if (parm->satacapabilities & ATA_SATA_GEN1)
                        printf("SATA revision 1.x\n");
                else
                        printf("Unknown SATA revision\n");
        }
        else
                printf("ATA/ATAPI revision %d\n", version(parm->version_major));
}

static void
cap_print(struct ata_params *parm)
{
        u_int32_t lbasize = (u_int32_t)parm->lba_size_1 |
                                ((u_int32_t)parm->lba_size_2 << 16);

        u_int64_t lbasize48 = ((u_int64_t)parm->lba_size48_1) |
                                ((u_int64_t)parm->lba_size48_2 << 16) |
                                ((u_int64_t)parm->lba_size48_3 << 32) |
                                ((u_int64_t)parm->lba_size48_4 << 48);

        printf("\n");
        printf("Protocol              ");
        if (parm->satacapabilities && parm->satacapabilities != 0xffff) {
                if (parm->satacapabilities & ATA_SATA_GEN2)
                        printf("SATA revision 2.x\n");
                else if (parm->satacapabilities & ATA_SATA_GEN1)
                        printf("SATA revision 1.x\n");
                else
                        printf("Unknown SATA revision\n");
        }
        else
                printf("ATA/ATAPI revision %d\n", version(parm->version_major));
        printf("device model          %.40s\n", parm->model);
        printf("serial number         %.20s\n", parm->serial);
        printf("firmware revision     %.8s\n", parm->revision);

        printf("cylinders             %d\n", parm->cylinders);
        printf("heads                 %d\n", parm->heads);
        printf("sectors/track         %d\n", parm->sectors);

        printf("lba%ssupported         ",
                parm->capabilities1 & ATA_SUPPORT_LBA ? " " : " not ");
        if (lbasize)
                printf("%d sectors\n", lbasize);
        else
                printf("\n");

        printf("lba48%ssupported       ",
                parm->support.command2 & ATA_SUPPORT_ADDRESS48 ? " " : " not ");
        if (lbasize48)
                printf("%ju sectors\n", (uintmax_t)lbasize48);
        else
                printf("\n");

        printf("dma%ssupported\n",
                parm->capabilities1 & ATA_SUPPORT_DMA ? " " : " not ");

        printf("overlap%ssupported\n",
                parm->capabilities1 & ATA_SUPPORT_OVERLAP ? " " : " not ");

        printf("\nFeature                      "
                "Support  Enable    Value           Vendor\n");

        printf("write cache                    %s       %s\n",
                parm->support.command1 & ATA_SUPPORT_WRITECACHE ? "yes" : "no",
                parm->enabled.command1 & ATA_SUPPORT_WRITECACHE ? "yes" : "no");

        printf("read ahead                     %s       %s\n",
                parm->support.command1 & ATA_SUPPORT_LOOKAHEAD ? "yes" : "no",
                parm->enabled.command1 & ATA_SUPPORT_LOOKAHEAD ? "yes" : "no");

        if (parm->satacapabilities && parm->satacapabilities != 0xffff) {
                printf("Native Command Queuing (NCQ)   %s       %s"
                        "       %d/0x%02X\n",
                        parm->satacapabilities & ATA_SUPPORT_NCQ ?
                                "yes" : "no", " -",
                        (parm->satacapabilities & ATA_SUPPORT_NCQ) ?
                                ATA_QUEUE_LEN(parm->queue) : 0,
                        (parm->satacapabilities & ATA_SUPPORT_NCQ) ?
                                ATA_QUEUE_LEN(parm->queue) : 0);
        }
        printf("Tagged Command Queuing (TCQ)   %s       %s      %d/0x%02X\n",
                parm->support.command2 & ATA_SUPPORT_QUEUED ? "yes" : "no",
                parm->enabled.command2 & ATA_SUPPORT_QUEUED ? "yes" : "no",
                ATA_QUEUE_LEN(parm->queue), ATA_QUEUE_LEN(parm->queue));

        printf("SMART                          %s       %s\n",
                parm->support.command1 & ATA_SUPPORT_SMART ? "yes" : "no",
                parm->enabled.command1 & ATA_SUPPORT_SMART ? "yes" : "no");

        printf("microcode download             %s       %s\n",
                parm->support.command2 & ATA_SUPPORT_MICROCODE ? "yes" : "no",
                parm->enabled.command2 & ATA_SUPPORT_MICROCODE ? "yes" : "no");

        printf("security                       %s       %s\n",
                parm->support.command1 & ATA_SUPPORT_SECURITY ? "yes" : "no",
                parm->enabled.command1 & ATA_SUPPORT_SECURITY ? "yes" : "no");

        printf("power management               %s       %s\n",
                parm->support.command1 & ATA_SUPPORT_POWERMGT ? "yes" : "no",
                parm->enabled.command1 & ATA_SUPPORT_POWERMGT ? "yes" : "no");

        printf("advanced power management      %s       %s      %d/0x%02X\n",
                parm->support.command2 & ATA_SUPPORT_APM ? "yes" : "no",
                parm->enabled.command2 & ATA_SUPPORT_APM ? "yes" : "no",
                parm->apm_value, parm->apm_value);

        printf("automatic acoustic management  %s       %s      "
                "%d/0x%02X      %d/0x%02X\n",
                parm->support.command2 & ATA_SUPPORT_AUTOACOUSTIC ? "yes" :"no",
                parm->enabled.command2 & ATA_SUPPORT_AUTOACOUSTIC ? "yes" :"no",
                ATA_ACOUSTIC_CURRENT(parm->acoustic),
                ATA_ACOUSTIC_CURRENT(parm->acoustic),
                ATA_ACOUSTIC_VENDOR(parm->acoustic),
                ATA_ACOUSTIC_VENDOR(parm->acoustic));
}

static void
ata_cap_print(int fd)
{
        struct ata_params params;

        if (ioctl(fd, IOCATAGPARM, &params) < 0)
                err(1, "ioctl(IOCATAGPARM)");
        cap_print(&params);
}

static void
info_print(int fd, int channel, int prchan)
{
        struct ata_ioc_devices devices;

        devices.channel = channel;

        if (ioctl(fd, IOCATADEVICES, &devices) < 0) {
                if (!prchan)
                        err(1, "ioctl(IOCATADEVICES)");
                return;
        }
        if (prchan)
                printf("ATA channel %d:\n", channel);
        printf("%sMaster: ", prchan ? "    " : "");
        if (*devices.name[0]) {
                printf("%4.4s ", devices.name[0]);
                param_print(&devices.params[0]);
        }
        else
                printf("     no device present\n");
        printf("%sSlave:  ", prchan ? "    " : "");
        if (*devices.name[1]) {
                printf("%4.4s ", devices.name[1]);
                param_print(&devices.params[1]);
        }
        else
                printf("     no device present\n");
}

static void
ata_spindown(int fd, const char *dev, const char *arg)
{
        int tmo;

        if (arg != NULL) {
                tmo = strtoul(arg, NULL, 0);
                if (ioctl(fd, IOCATASSPINDOWN, &tmo) < 0)
                        err(1, "ioctl(IOCATASSPINDOWN)");
        } else {
                if (ioctl(fd, IOCATAGSPINDOWN, &tmo) < 0)
                        err(1, "ioctl(IOCATAGSPINDOWN)");
                if (tmo == 0)
                        printf("%s: idle spin down disabled\n", dev);
                else
                        printf("%s: spin down after %d seconds idle\n",
                            dev, tmo);
        }
}

static int
open_dev(const char *arg, int mode)
{
        int disk, fd;
        char device[64];

        if (!(sscanf(arg, "ad%d", &disk) == 1 ||
              sscanf(arg, "acd%d", &disk) == 1 ||
              sscanf(arg, "afd%d", &disk) == 1 ||
              sscanf(arg, "ast%d", &disk) == 1)) {
                fprintf(stderr, "natacontrol: Invalid device %s\n", arg);
                exit(EX_USAGE);
        }
        sprintf(device, "/dev/%s", arg);
        if ((fd = open(device, mode)) < 0)
                err(1, "device not found");
        return (fd);
}

static int
ar_arg(const char *arg)
{
        int array;

        if (!(sscanf(arg, "ar%d", &array) == 1)) {
                fprintf(stderr, "natacontrol: Invalid array %s\n", arg);
                exit(EX_USAGE);
        }
        return (array);
}

static int
ata_arg(const char *arg)
{
        int channel;

        if (!(sscanf(arg, "ata%d", &channel) == 1)) {
                fprintf(stderr, "natacontrol: Invalid channel %s\n", arg);
                exit(EX_USAGE);
        }
        return (channel);
}

int
main(int argc, char **argv)
{
        int fd, mode, channel, array;

        if (argc < 2)
                usage();

        if (!strcmp(argv[1], "mode") && (argc == 3 || argc == 4)) {
                fd = open_dev(argv[2], O_RDONLY);
                if (argc == 4) {
                        mode = str2mode(argv[3]);
                        if (mode == -1)
                                errx(1, "unknown mode");
                        if (ioctl(fd, IOCATASMODE, &mode) < 0)
                                warn("ioctl(IOCATASMODE)");
                }
                if (argc == 3 || argc == 4) {
                        if (ioctl(fd, IOCATAGMODE, &mode) < 0)
                                err(1, "ioctl(IOCATAGMODE)");
                        printf("current mode = %s %s\n",
                            mode2str(mode), satarev2str(mode));
                }
                exit(EX_OK);
        }
        if (!strcmp(argv[1], "feature") && argc == 5) {
                struct ata_ioc_request request;

                fd = open_dev(argv[2], O_RDONLY);

                bzero(&request, sizeof(struct ata_ioc_request));
                request.u.ata.command = ATA_SETFEATURES;
                request.flags = ATA_CMD_CONTROL;
                request.timeout = 500;
                if (!strcmp(argv[3], "apm")) {
                        if (!strcmp(argv[4], "off")) {
                                request.u.ata.feature = ATA_SF_DIS_APM;
                        } else if (!strcmp(argv[4], "maxperf")) {
                                request.u.ata.feature = ATA_SF_ENAB_APM;
                                request.u.ata.count = 0xfe;
                        } else if (!strcmp(argv[4], "minpower")) {
                                request.u.ata.feature = ATA_SF_ENAB_APM;
                                request.u.ata.count = 0x01;
                        } else {
                                int offset = 0;

                                request.u.ata.feature = ATA_SF_ENAB_APM;
                                if (argv[4][0] == 's') {
                                        offset = atoi(&argv[4][1]);
                                        request.u.ata.count = 0x01;
                                } else {
                                        offset = atoi(&argv[4][1]);
                                        request.u.ata.count = 0x80;
                                }
                                if (offset >= 0 && offset <= 127)
                                        request.u.ata.count += offset;
                        }
                } else if (!strcmp(argv[3], "acoustic")) {
                        if (!strcmp(argv[4], "off")) {
                                request.u.ata.feature = ATA_SF_DIS_ACCOUS;
                        } else if (!strcmp(argv[4], "maxperf")) {
                                request.u.ata.feature = ATA_SF_ENAB_ACCOUS;
                                request.u.ata.count = 0xfe;
                        } else if (!strcmp(argv[4], "maxquiet")) {
                                request.u.ata.feature = ATA_SF_ENAB_ACCOUS;
                                request.u.ata.count = 0x80;
                        } else {
                                request.u.ata.feature = ATA_SF_ENAB_ACCOUS;
                                request.u.ata.count = atoi(argv[4]);
                                if (request.u.ata.count > 124)
                                        request.u.ata.count = 124;
                        }
                } else {
                        usage();
                }

                if (ioctl(fd, IOCATAREQUEST, &request) < 0)
                        err(1, "ioctl(IOCATAREQUEST)");

                if (request.error != 0) {
                        fprintf(stderr,
                            "IOCATAREQUEST returned err status %d",
                            request.error);
                        exit(EX_IOERR);
                }
                exit(EX_OK);
        }
        if (!strcmp(argv[1], "cap") && argc == 3) {
                fd = open_dev(argv[2], O_RDONLY);
                ata_cap_print(fd);
                exit(EX_OK);
        }

        if (!strcmp(argv[1], "spindown") && (argc == 3 || argc == 4)) {
                fd = open_dev(argv[2], O_RDONLY);
                ata_spindown(fd, argv[2], argv[3]);
                exit(EX_OK);
        }

        if ((fd = open("/dev/ata", O_RDWR)) < 0)
                err(1, "control device not found");

        if (!strcmp(argv[1], "list") && argc == 2) {
                int maxchannel;

                if (ioctl(fd, IOCATAGMAXCHANNEL, &maxchannel) < 0)
                        err(1, "ioctl(IOCATAGMAXCHANNEL)");
                for (channel = 0; channel < maxchannel; channel++)
                        info_print(fd, channel, 1);
                exit(EX_OK);
        }
        if (!strcmp(argv[1], "info") && argc == 3) {
                channel = ata_arg(argv[2]);
                info_print(fd, channel, 0);
                exit(EX_OK);
        }
        if (!strcmp(argv[1], "detach") && argc == 3) {
                channel = ata_arg(argv[2]);
                if (ioctl(fd, IOCATADETACH, &channel) < 0)
                        err(1, "ioctl(IOCATADETACH)");
                exit(EX_OK);
        }
        if (!strcmp(argv[1], "attach") && argc == 3) {
                channel = ata_arg(argv[2]);
                if (ioctl(fd, IOCATAATTACH, &channel) < 0)
                        err(1, "ioctl(IOCATAATTACH)");
                info_print(fd, channel, 0);
                exit(EX_OK);
        }
        if (!strcmp(argv[1], "reinit") && argc == 3) {
                channel = ata_arg(argv[2]);
                if (ioctl(fd, IOCATAREINIT, &channel) < 0)
                        warn("ioctl(IOCATAREINIT)");
                info_print(fd, channel, 0);
                exit(EX_OK);
        }
        if (!strcmp(argv[1], "create")) {
                int disk, dev, offset;
                struct ata_ioc_raid_config config;

                bzero(&config, sizeof(config));
                if (argc > 2) {
                        if (!strcasecmp(argv[2], "RAID0") ||
                            !strcasecmp(argv[2], "stripe"))
                                config.type = AR_RAID0;
                        if (!strcasecmp(argv[2], "RAID1") ||
                            !strcasecmp(argv[2],"mirror"))
                                config.type = AR_RAID1;
                        if (!strcasecmp(argv[2], "RAID0+1") ||
                            !strcasecmp(argv[2],"RAID10"))
                                config.type = AR_RAID01;
                        if (!strcasecmp(argv[2], "RAID5"))
                                config.type = AR_RAID5;
                        if (!strcasecmp(argv[2], "SPAN"))
                                config.type = AR_SPAN;
                        if (!strcasecmp(argv[2], "JBOD"))
                                config.type = AR_JBOD;
                }
                if (!config.type) {
                        fprintf(stderr, "natacontrol: Invalid RAID type %s\n",
                                argv[2]);
                        fprintf(stderr, "natacontrol: Valid RAID types: \n");
                        fprintf(stderr, "             stripe | mirror | "
                                        "RAID0 | RAID1 | RAID0+1 | RAID5 | "
                                        "SPAN | JBOD\n");
                        exit(EX_USAGE);
                }

                if (config.type == AR_RAID0 ||
                    config.type == AR_RAID01 ||
                    config.type == AR_RAID5) {
                        if (argc < 4 ||
                            sscanf(argv[3], "%d", &config.interleave) != 1) {
                                fprintf(stderr,
                                        "natacontrol: Invalid interleave %s\n",
                                        argv[3]);
                                exit(EX_USAGE);
                        }
                        offset = 4;
                }
                else
                        offset = 3;

                for (disk = 0; disk < 16 && (offset + disk) < argc; disk++) {
                        if (!(sscanf(argv[offset + disk], "ad%d", &dev) == 1)) {
                                fprintf(stderr,
                                        "natacontrol: Invalid disk %s\n",
                                        argv[offset + disk]);
                                exit(EX_USAGE);
                        }
                        config.disks[disk] = dev;
                }

                if ((config.type == AR_RAID1 || config.type == AR_RAID01) &&
                    disk < 2) {
                        fprintf(stderr, "natacontrol: At least 2 disks must be "
                                "specified\n");
                        exit(EX_USAGE);
                }

                config.total_disks = disk;
                if (ioctl(fd, IOCATARAIDCREATE, &config) < 0)
                        err(1, "ioctl(IOCATARAIDCREATE)");
                else
                        printf("ar%d created\n", config.lun);
                exit(EX_OK);
        }
        if (!strcmp(argv[1], "delete") && argc == 3) {
                array = ar_arg(argv[2]);
                if (ioctl(fd, IOCATARAIDDELETE, &array) < 0)
                        warn("ioctl(IOCATARAIDDELETE)");
                exit(EX_OK);
        }
        if (!strcmp(argv[1], "addspare") && argc == 4) {
                struct ata_ioc_raid_config config;

                config.lun = ar_arg(argv[2]);
                if (!(sscanf(argv[3], "ad%d", &config.disks[0]) == 1)) {
                        fprintf(stderr,
                                "natacontrol: Invalid disk %s\n", argv[3]);
                        usage();
                }
                if (ioctl(fd, IOCATARAIDADDSPARE, &config) < 0)
                        warn("ioctl(IOCATARAIDADDSPARE)");
                exit(EX_OK);
        }
        if (!strcmp(argv[1], "rebuild") && argc == 3) {
                array = ar_arg(argv[2]);
                if (ioctl(fd, IOCATARAIDREBUILD, &array) < 0)
                        warn("ioctl(IOCATARAIDREBUILD)");
                else {
                        char device[64];
                        char *buffer;
                        ssize_t len;
                        int arfd;

                        if (daemon(0, 1) == -1)
                                err(1, "daemon");
                        nice(20);
                        snprintf(device, sizeof(device), "/dev/ar%d",
                            array);
                        if ((arfd = open(device, O_RDONLY)) == -1)
                                err(1, "open %s", device);
                        if ((buffer = malloc(1024 * 1024)) == NULL)
                                err(1, "malloc");
                        while ((len = read(arfd, buffer, 1024 * 1024)) > 0)
                                ;
                        if (len == -1)
                                err(1, "read");
                        else
                                fprintf(stderr,
                                    "natacontrol: ar%d rebuild completed\n",
                                    array);
                        free(buffer);
                        close(arfd);
                }
                exit(EX_OK);
        }
        if (!strcmp(argv[1], "status") && argc == 3) {
                struct ata_ioc_raid_status status;
                int i, lun, state;

                status.lun = ar_arg(argv[2]);
                if (ioctl(fd, IOCATARAIDSTATUS, &status) < 0)
                        err(1, "ioctl(IOCATARAIDSTATUS)");

                printf("ar%d: ATA ", status.lun);
                switch (status.type) {
                case AR_RAID0:
                        printf("RAID0 stripesize=%d", status.interleave);
                        break;
                case AR_RAID1:
                        printf("RAID1");
                        break;
                case AR_RAID01:
                        printf("RAID0+1 stripesize=%d", status.interleave);
                        break;
                case AR_RAID5:
                        printf("RAID5 stripesize=%d", status.interleave);
                        break;
                case AR_JBOD:
                        printf("JBOD");
                        break;
                case AR_SPAN:
                        printf("SPAN");
                        break;
                }
                printf(" status: ");
                switch (status.status) {
                case AR_READY:
                        printf("READY\n");
                        break;
                case AR_READY | AR_DEGRADED:
                        printf("DEGRADED\n");
                        break;
                case AR_READY | AR_DEGRADED | AR_REBUILDING:
                        printf("REBUILDING %d%% completed\n",
                                status.progress);
                        break;
                default:
                        printf("BROKEN\n");
                }
                printf(" subdisks:\n");
                for (i = 0; i < status.total_disks; i++) {
                        printf("  %2d ", i);
                        lun = status.disks[i].lun;
                        state = status.disks[i].state;
                        if (lun < 0)
                                printf("---- ");
                        else
                                printf("ad%-2d ", lun);
                        if (state & AR_DISK_ONLINE)
                                printf("ONLINE");
                        else if (state & AR_DISK_SPARE)
                                printf("SPARE");
                        else if (state & AR_DISK_PRESENT)
                                printf("OFFLINE");
                        else
                                printf("MISSING");
                        printf("\n");
                }
                exit(EX_OK);
        }
        usage();
        exit(EX_OK);
}