[qemu.git] / qemu-img.c

/*
 * QEMU disk image utility
 *
 * Copyright (c) 2003-2007 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#include "vl.h"
#include "block_int.h"
#include <assert.h>

#ifdef _WIN32
#include <windows.h>
#endif

void *get_mmap_addr(unsigned long size)
{
    return NULL;
}

void qemu_free(void *ptr)
{
    free(ptr);
}

void *qemu_malloc(size_t size)
{
    return malloc(size);
}

void *qemu_mallocz(size_t size)
{
    void *ptr;
    ptr = qemu_malloc(size);
    if (!ptr)
        return NULL;
    memset(ptr, 0, size);
    return ptr;
}

char *qemu_strdup(const char *str)
{
    char *ptr;
    ptr = qemu_malloc(strlen(str) + 1);
    if (!ptr)
        return NULL;
    strcpy(ptr, str);
    return ptr;
}

void term_printf(const char *fmt, ...)
{
    va_list ap;
    va_start(ap, fmt);
    vprintf(fmt, ap);
    va_end(ap);
}

void term_print_filename(const char *filename)
{
    term_printf(filename);
}

void __attribute__((noreturn)) error(const char *fmt, ...)
{
    va_list ap;
    va_start(ap, fmt);
    fprintf(stderr, "qemu-img: ");
    vfprintf(stderr, fmt, ap);
    fprintf(stderr, "\n");
    exit(1);
    va_end(ap);
}

static void format_print(void *opaque, const char *name)
{
    printf(" %s", name);
}

void help(void)
{
    printf("qemu-img version " QEMU_VERSION ", Copyright (c) 2004-2007 Fabrice Bellard\n"
           "usage: qemu-img command [command options]\n"
           "QEMU disk image utility\n"
           "\n"
           "Command syntax:\n"
           "  create [-e] [-6] [-b base_image] [-f fmt] filename [size]\n"
           "  commit [-f fmt] filename\n"
           "  convert [-c] [-e] [-6] [-f fmt] filename [filename2 [...]] [-O output_fmt] output_filename\n"
           "  info [-f fmt] filename\n"
           "\n"
           "Command parameters:\n"
           "  'filename' is a disk image filename\n"
           "  'base_image' is the read-only disk image which is used as base for a copy on\n"
           "    write image; the copy on write image only stores the modified data\n"
           "  'fmt' is the disk image format. It is guessed automatically in most cases\n"
           "  'size' is the disk image size in kilobytes. Optional suffixes 'M' (megabyte)\n"
           "    and 'G' (gigabyte) are supported\n"
           "  'output_filename' is the destination disk image filename\n"
           "  'output_fmt' is the destination format\n"
           "  '-c' indicates that target image must be compressed (qcow format only)\n"
           "  '-e' indicates that the target image must be encrypted (qcow format only)\n"
           "  '-6' indicates that the target image must use compatibility level 6 (vmdk format only)\n"
           );
    printf("\nSupported format:");
    bdrv_iterate_format(format_print, NULL);
    printf("\n");
    exit(1);
}

#if defined(WIN32)
/* XXX: put correct support for win32 */
static int read_password(char *buf, int buf_size)
{
    int c, i;
    printf("Password: ");
    fflush(stdout);
    i = 0;
    for(;;) {
        c = getchar();
        if (c == '\n')
            break;
        if (i < (buf_size - 1))
            buf[i++] = c;
    }
    buf[i] = '\0';
    return 0;
}

#else

#include <termios.h>

static struct termios oldtty;

static void term_exit(void)
{
    tcsetattr (0, TCSANOW, &oldtty);
}

static void term_init(void)
{
    struct termios tty;

    tcgetattr (0, &tty);
    oldtty = tty;

    tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
                          |INLCR|IGNCR|ICRNL|IXON);
    tty.c_oflag |= OPOST;
    tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
    tty.c_cflag &= ~(CSIZE|PARENB);
    tty.c_cflag |= CS8;
    tty.c_cc[VMIN] = 1;
    tty.c_cc[VTIME] = 0;

    tcsetattr (0, TCSANOW, &tty);

    atexit(term_exit);
}

int read_password(char *buf, int buf_size)
{
    uint8_t ch;
    int i, ret;

    printf("password: ");
    fflush(stdout);
    term_init();
    i = 0;
    for(;;) {
        ret = read(0, &ch, 1);
        if (ret == -1) {
            if (errno == EAGAIN || errno == EINTR) {
                continue;
            } else {
                ret = -1;
                break;
            }
        } else if (ret == 0) {
            ret = -1;
            break;
        } else {
            if (ch == '\r') {
                ret = 0;
                break;
            }
            if (i < (buf_size - 1))
                buf[i++] = ch;
        }
    }
    term_exit();
    buf[i] = '\0';
    printf("\n");
    return ret;
}
#endif

static BlockDriverState *bdrv_new_open(const char *filename,
                                       const char *fmt)
{
    BlockDriverState *bs;
    BlockDriver *drv;
    char password[256];

    bs = bdrv_new("");
    if (!bs)
        error("Not enough memory");
    if (fmt) {
        drv = bdrv_find_format(fmt);
        if (!drv)
            error("Unknown file format '%s'", fmt);
    } else {
        drv = NULL;
    }
    if (bdrv_open2(bs, filename, 0, drv) < 0) {
        error("Could not open '%s'", filename);
    }
    if (bdrv_is_encrypted(bs)) {
        printf("Disk image '%s' is encrypted.\n", filename);
        if (read_password(password, sizeof(password)) < 0)
            error("No password given");
        if (bdrv_set_key(bs, password) < 0)
            error("invalid password");
    }
    return bs;
}

static int img_create(int argc, char **argv)
{
    int c, ret, flags;
    const char *fmt = "raw";
    const char *filename;
    const char *base_filename = NULL;
    int64_t size;
    const char *p;
    BlockDriver *drv;

    flags = 0;
    for(;;) {
        c = getopt(argc, argv, "b:f:he6");
        if (c == -1)
            break;
        switch(c) {
        case 'h':
            help();
            break;
        case 'b':
            base_filename = optarg;
            break;
        case 'f':
            fmt = optarg;
            break;
        case 'e':
            flags |= BLOCK_FLAG_ENCRYPT;
            break;
        case '6':
            flags |= BLOCK_FLAG_COMPAT6;
            break;
        }
    }
    if (optind >= argc)
        help();
    filename = argv[optind++];
    size = 0;
    if (base_filename) {
        BlockDriverState *bs;
        bs = bdrv_new_open(base_filename, NULL);
        bdrv_get_geometry(bs, &size);
        size *= 512;
        bdrv_delete(bs);
    } else {
        if (optind >= argc)
            help();
        p = argv[optind];
        size = strtoul(p, (char **)&p, 0);
        if (*p == 'M') {
            size *= 1024 * 1024;
        } else if (*p == 'G') {
            size *= 1024 * 1024 * 1024;
        } else if (*p == 'k' || *p == 'K' || *p == '\0') {
            size *= 1024;
        } else {
            help();
        }
    }
    drv = bdrv_find_format(fmt);
    if (!drv)
        error("Unknown file format '%s'", fmt);
    printf("Formatting '%s', fmt=%s",
           filename, fmt);
    if (flags & BLOCK_FLAG_ENCRYPT)
        printf(", encrypted");
    if (flags & BLOCK_FLAG_COMPAT6)
        printf(", compatibility level=6");
    if (base_filename) {
        printf(", backing_file=%s",
               base_filename);
    }
    printf(", size=%" PRId64 " kB\n", (int64_t) (size / 1024));
    ret = bdrv_create(drv, filename, size / 512, base_filename, flags);
    if (ret < 0) {
        if (ret == -ENOTSUP) {
            error("Formatting or formatting option not supported for file format '%s'", fmt);
        } else {
            error("Error while formatting");
        }
    }
    return 0;
}

static int img_commit(int argc, char **argv)
{
    int c, ret;
    const char *filename, *fmt;
    BlockDriver *drv;
    BlockDriverState *bs;

    fmt = NULL;
    for(;;) {
        c = getopt(argc, argv, "f:h");
        if (c == -1)
            break;
        switch(c) {
        case 'h':
            help();
            break;
        case 'f':
            fmt = optarg;
            break;
        }
    }
    if (optind >= argc)
        help();
    filename = argv[optind++];

    bs = bdrv_new("");
    if (!bs)
        error("Not enough memory");
    if (fmt) {
        drv = bdrv_find_format(fmt);
        if (!drv)
            error("Unknown file format '%s'", fmt);
    } else {
        drv = NULL;
    }
    if (bdrv_open2(bs, filename, 0, drv) < 0) {
        error("Could not open '%s'", filename);
    }
    ret = bdrv_commit(bs);
    switch(ret) {
    case 0:
        printf("Image committed.\n");
        break;
    case -ENOENT:
        error("No disk inserted");
        break;
    case -EACCES:
        error("Image is read-only");
        break;
    case -ENOTSUP:
        error("Image is already committed");
        break;
    default:
        error("Error while committing image");
        break;
    }

    bdrv_delete(bs);
    return 0;
}

static int is_not_zero(const uint8_t *sector, int len)
{
    int i;
    len >>= 2;
    for(i = 0;i < len; i++) {
        if (((uint32_t *)sector)[i] != 0)
            return 1;
    }
    return 0;
}

static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum)
{
    int v, i;

    if (n <= 0) {
        *pnum = 0;
        return 0;
    }
    v = is_not_zero(buf, 512);
    for(i = 1; i < n; i++) {
        buf += 512;
        if (v != is_not_zero(buf, 512))
            break;
    }
    *pnum = i;
    return v;
}

#define IO_BUF_SIZE 65536

static int img_convert(int argc, char **argv)
{
    int c, ret, n, n1, bs_n, bs_i, flags, cluster_size, cluster_sectors;
    const char *fmt, *out_fmt, *out_filename;
    BlockDriver *drv;
    BlockDriverState **bs, *out_bs;
    int64_t total_sectors, nb_sectors, sector_num, bs_offset, bs_sectors;
    uint8_t buf[IO_BUF_SIZE];
    const uint8_t *buf1;
    BlockDriverInfo bdi;

    fmt = NULL;
    out_fmt = "raw";
    flags = 0;
    for(;;) {
        c = getopt(argc, argv, "f:O:hce6");
        if (c == -1)
            break;
        switch(c) {
        case 'h':
            help();
            break;
        case 'f':
            fmt = optarg;
            break;
        case 'O':
            out_fmt = optarg;
            break;
        case 'c':
            flags |= BLOCK_FLAG_COMPRESS;
            break;
        case 'e':
            flags |= BLOCK_FLAG_ENCRYPT;
            break;
        case '6':
            flags |= BLOCK_FLAG_COMPAT6;
            break;
        }
    }

    bs_n = argc - optind - 1;
    if (bs_n < 1) help();

    out_filename = argv[argc - 1];
        
    bs = calloc(bs_n, sizeof(BlockDriverState *));
    if (!bs)
        error("Out of memory");

    total_sectors = 0;
    for (bs_i = 0; bs_i < bs_n; bs_i++) {
        bs[bs_i] = bdrv_new_open(argv[optind + bs_i], fmt);
        if (!bs[bs_i])
            error("Could not open '%s'", argv[optind + bs_i]);
        bdrv_get_geometry(bs[bs_i], &bs_sectors);
        total_sectors += bs_sectors;
    }

    drv = bdrv_find_format(out_fmt);
    if (!drv)
        error("Unknown file format '%s'", out_fmt);
    if (flags & BLOCK_FLAG_COMPRESS && drv != &bdrv_qcow && drv != &bdrv_qcow2)
        error("Compression not supported for this file format");
    if (flags & BLOCK_FLAG_ENCRYPT && drv != &bdrv_qcow && drv != &bdrv_qcow2)
        error("Encryption not supported for this file format");
    if (flags & BLOCK_FLAG_COMPAT6 && drv != &bdrv_vmdk)
        error("Alternative compatibility level not supported for this file format");
    if (flags & BLOCK_FLAG_ENCRYPT && flags & BLOCK_FLAG_COMPRESS)
        error("Compression and encryption not supported at the same time");

    ret = bdrv_create(drv, out_filename, total_sectors, NULL, flags);
    if (ret < 0) {
        if (ret == -ENOTSUP) {
            error("Formatting not supported for file format '%s'", fmt);
        } else {
            error("Error while formatting '%s'", out_filename);
        }
    }

    out_bs = bdrv_new_open(out_filename, out_fmt);

    bs_i = 0;
    bs_offset = 0;
    bdrv_get_geometry(bs[0], &bs_sectors);

    if (flags & BLOCK_FLAG_COMPRESS) {
        if (bdrv_get_info(out_bs, &bdi) < 0)
            error("could not get block driver info");
        cluster_size = bdi.cluster_size;
        if (cluster_size <= 0 || cluster_size > IO_BUF_SIZE)
            error("invalid cluster size");
        cluster_sectors = cluster_size >> 9;
        sector_num = 0;
        for(;;) {
            int64_t bs_num;
            int remainder;
            uint8_t *buf2;

            nb_sectors = total_sectors - sector_num;
            if (nb_sectors <= 0)
                break;
            if (nb_sectors >= cluster_sectors)
                n = cluster_sectors;
            else
                n = nb_sectors;

            bs_num = sector_num - bs_offset;
            assert (bs_num >= 0);
            remainder = n;
            buf2 = buf;
            while (remainder > 0) {
                int nlow;
                while (bs_num == bs_sectors) {
                    bs_i++;
                    assert (bs_i < bs_n);
                    bs_offset += bs_sectors;
                    bdrv_get_geometry(bs[bs_i], &bs_sectors);
                    bs_num = 0;
                    /* printf("changing part: sector_num=%lld, "
                       "bs_i=%d, bs_offset=%lld, bs_sectors=%lld\n",
                       sector_num, bs_i, bs_offset, bs_sectors); */
                }
                assert (bs_num < bs_sectors);

                nlow = (remainder > bs_sectors - bs_num) ? bs_sectors - bs_num : remainder;

                if (bdrv_read(bs[bs_i], bs_num, buf2, nlow) < 0) 
                    error("error while reading");

                buf2 += nlow * 512;
                bs_num += nlow;

                remainder -= nlow;
            }
            assert (remainder == 0);

            if (n < cluster_sectors)
                memset(buf + n * 512, 0, cluster_size - n * 512);
            if (is_not_zero(buf, cluster_size)) {
                if (bdrv_write_compressed(out_bs, sector_num, buf,
                                          cluster_sectors) != 0)
                    error("error while compressing sector %" PRId64,
                          sector_num);
            }
            sector_num += n;
        }
        /* signal EOF to align */
        bdrv_write_compressed(out_bs, 0, NULL, 0);
    } else {
        sector_num = 0;
        for(;;) {
            nb_sectors = total_sectors - sector_num;
            if (nb_sectors <= 0)
                break;
            if (nb_sectors >= (IO_BUF_SIZE / 512))
                n = (IO_BUF_SIZE / 512);
            else
                n = nb_sectors;

            while (sector_num - bs_offset >= bs_sectors) {
                bs_i ++;
                assert (bs_i < bs_n);
                bs_offset += bs_sectors;
                bdrv_get_geometry(bs[bs_i], &bs_sectors);
                /* printf("changing part: sector_num=%lld, bs_i=%d, "
                  "bs_offset=%lld, bs_sectors=%lld\n",
                   sector_num, bs_i, bs_offset, bs_sectors); */
            }

            if (n > bs_offset + bs_sectors - sector_num)
                n = bs_offset + bs_sectors - sector_num;

            if (bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n) < 0) 
                error("error while reading");
            /* NOTE: at the same time we convert, we do not write zero
               sectors to have a chance to compress the image. Ideally, we
               should add a specific call to have the info to go faster */
            buf1 = buf;
            while (n > 0) {
                if (is_allocated_sectors(buf1, n, &n1)) {
                    if (bdrv_write(out_bs, sector_num, buf1, n1) < 0)
                        error("error while writing");
                }
                sector_num += n1;
                n -= n1;
                buf1 += n1 * 512;
            }
        }
    }
    bdrv_delete(out_bs);
    for (bs_i = 0; bs_i < bs_n; bs_i++)
        bdrv_delete(bs[bs_i]);
    free(bs);
    return 0;
}

#ifdef _WIN32
static int64_t get_allocated_file_size(const char *filename)
{
    typedef DWORD (WINAPI * get_compressed_t)(const char *filename, DWORD *high);
    get_compressed_t get_compressed;
    struct _stati64 st;

    /* WinNT support GetCompressedFileSize to determine allocate size */
    get_compressed = (get_compressed_t) GetProcAddress(GetModuleHandle("kernel32"), "GetCompressedFileSizeA");
    if (get_compressed) {
    	DWORD high, low;
    	low = get_compressed(filename, &high);
    	if (low != 0xFFFFFFFFlu || GetLastError() == NO_ERROR)
	    return (((int64_t) high) << 32) + low;
    }

    if (_stati64(filename, &st) < 0)
        return -1;
    return st.st_size;
}
#else
static int64_t get_allocated_file_size(const char *filename)
{
    struct stat st;
    if (stat(filename, &st) < 0)
        return -1;
    return (int64_t)st.st_blocks * 512;
}
#endif

static void dump_snapshots(BlockDriverState *bs)
{
    QEMUSnapshotInfo *sn_tab, *sn;
    int nb_sns, i;
    char buf[256];

    nb_sns = bdrv_snapshot_list(bs, &sn_tab);
    if (nb_sns <= 0)
        return;
    printf("Snapshot list:\n");
    printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL));
    for(i = 0; i < nb_sns; i++) {
        sn = &sn_tab[i];
        printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn));
    }
    qemu_free(sn_tab);
}

static int img_info(int argc, char **argv)
{
    int c;
    const char *filename, *fmt;
    BlockDriver *drv;
    BlockDriverState *bs;
    char fmt_name[128], size_buf[128], dsize_buf[128];
    int64_t total_sectors, allocated_size;
    char backing_filename[1024];
    char backing_filename2[1024];
    BlockDriverInfo bdi;

    fmt = NULL;
    for(;;) {
        c = getopt(argc, argv, "f:h");
        if (c == -1)
            break;
        switch(c) {
        case 'h':
            help();
            break;
        case 'f':
            fmt = optarg;
            break;
        }
    }
    if (optind >= argc)
        help();
    filename = argv[optind++];

    bs = bdrv_new("");
    if (!bs)
        error("Not enough memory");
    if (fmt) {
        drv = bdrv_find_format(fmt);
        if (!drv)
            error("Unknown file format '%s'", fmt);
    } else {
        drv = NULL;
    }
    if (bdrv_open2(bs, filename, 0, drv) < 0) {
        error("Could not open '%s'", filename);
    }
    bdrv_get_format(bs, fmt_name, sizeof(fmt_name));
    bdrv_get_geometry(bs, &total_sectors);
    get_human_readable_size(size_buf, sizeof(size_buf), total_sectors * 512);
    allocated_size = get_allocated_file_size(filename);
    if (allocated_size < 0)
	sprintf(dsize_buf, "unavailable");
    else
        get_human_readable_size(dsize_buf, sizeof(dsize_buf),
                                allocated_size);
    printf("image: %s\n"
           "file format: %s\n"
           "virtual size: %s (%" PRId64 " bytes)\n"
           "disk size: %s\n",
           filename, fmt_name, size_buf,
           (total_sectors * 512),
           dsize_buf);
    if (bdrv_is_encrypted(bs))
        printf("encrypted: yes\n");
    if (bdrv_get_info(bs, &bdi) >= 0) {
        if (bdi.cluster_size != 0)
            printf("cluster_size: %d\n", bdi.cluster_size);
    }
    bdrv_get_backing_filename(bs, backing_filename, sizeof(backing_filename));
    if (backing_filename[0] != '\0') {
        path_combine(backing_filename2, sizeof(backing_filename2),
                     filename, backing_filename);
        printf("backing file: %s (actual path: %s)\n",
               backing_filename,
               backing_filename2);
    }
    dump_snapshots(bs);
    bdrv_delete(bs);
    return 0;
}

int main(int argc, char **argv)
{
    const char *cmd;

    bdrv_init();
    if (argc < 2)
        help();
    cmd = argv[1];
    optind++;
    if (!strcmp(cmd, "create")) {
        img_create(argc, argv);
    } else if (!strcmp(cmd, "commit")) {
        img_commit(argc, argv);
    } else if (!strcmp(cmd, "convert")) {
        img_convert(argc, argv);
    } else if (!strcmp(cmd, "info")) {
        img_info(argc, argv);
    } else {
        help();
    }
    return 0;
}
Commit	Line	Data
ea2384d3	1	/*
fb43f4dd	2	* QEMU disk image utility
5fafdf24	3	*
84f2e8ef	4	* Copyright (c) 2003-2007 Fabrice Bellard
5fafdf24	5	*
ea2384d3 FB	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to deal
	8	* in the Software without restriction, including without limitation the rights
	9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	10	* copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	19	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	22	* THE SOFTWARE.
	23	*/
	24	#include "vl.h"
ec36ba14	25	#include "block_int.h"
926c2d23	26	#include <assert.h>
ea2384d3	27
e8445331 FB	28	#ifdef _WIN32
	29	#include <windows.h>
	30	#endif
	31
ea2384d3 FB	32	void *get_mmap_addr(unsigned long size)
	33	{
	34	return NULL;
	35	}
	36
	37	void qemu_free(void *ptr)
	38	{
	39	free(ptr);
	40	}
	41
	42	void *qemu_malloc(size_t size)
	43	{
	44	return malloc(size);
	45	}
	46
	47	void *qemu_mallocz(size_t size)
	48	{
	49	void *ptr;
	50	ptr = qemu_malloc(size);
	51	if (!ptr)
	52	return NULL;
	53	memset(ptr, 0, size);
	54	return ptr;
	55	}
	56
	57	char qemu_strdup(const char str)
	58	{
	59	char *ptr;
	60	ptr = qemu_malloc(strlen(str) + 1);
	61	if (!ptr)
	62	return NULL;
	63	strcpy(ptr, str);
	64	return ptr;
	65	}
	66
ea2384d3 FB	67	void term_printf(const char *fmt, ...)
	68	{
	69	va_list ap;
	70	va_start(ap, fmt);
	71	vprintf(fmt, ap);
	72	va_end(ap);
	73	}
	74
fef30743 TS	75	void term_print_filename(const char *filename)
	76	{
	77	term_printf(filename);
	78	}
	79
5fafdf24	80	void __attribute__((noreturn)) error(const char *fmt, ...)
ea2384d3 FB	81	{
	82	va_list ap;
	83	va_start(ap, fmt);
57d1a2b6	84	fprintf(stderr, "qemu-img: ");
ea2384d3 FB	85	vfprintf(stderr, fmt, ap);
	86	fprintf(stderr, "\n");
	87	exit(1);
	88	va_end(ap);
	89	}
	90
	91	static void format_print(void opaque, const char name)
	92	{
	93	printf(" %s", name);
	94	}
	95
	96	void help(void)
	97	{
84f2e8ef	98	printf("qemu-img version " QEMU_VERSION ", Copyright (c) 2004-2007 Fabrice Bellard\n"
57d1a2b6	99	"usage: qemu-img command [command options]\n"
ea2384d3 FB	100	"QEMU disk image utility\n"
	101	"\n"
	102	"Command syntax:\n"
ec36ba14	103	" create [-e] [-6] [-b base_image] [-f fmt] filename [size]\n"
ea2384d3	104	" commit [-f fmt] filename\n"
926c2d23	105	" convert [-c] [-e] [-6] [-f fmt] filename [filename2 [...]] [-O output_fmt] output_filename\n"
ea2384d3 FB	106	" info [-f fmt] filename\n"
	107	"\n"
	108	"Command parameters:\n"
	109	" 'filename' is a disk image filename\n"
	110	" 'base_image' is the read-only disk image which is used as base for a copy on\n"
	111	" write image; the copy on write image only stores the modified data\n"
	112	" 'fmt' is the disk image format. It is guessed automatically in most cases\n"
	113	" 'size' is the disk image size in kilobytes. Optional suffixes 'M' (megabyte)\n"
	114	" and 'G' (gigabyte) are supported\n"
	115	" 'output_filename' is the destination disk image filename\n"
	116	" 'output_fmt' is the destination format\n"
	117	" '-c' indicates that target image must be compressed (qcow format only)\n"
	118	" '-e' indicates that the target image must be encrypted (qcow format only)\n"
ec36ba14	119	" '-6' indicates that the target image must use compatibility level 6 (vmdk format only)\n"
ea2384d3 FB	120	);
	121	printf("\nSupported format:");
	122	bdrv_iterate_format(format_print, NULL);
	123	printf("\n");
	124	exit(1);
	125	}
	126
ea2384d3 FB	127	#if defined(WIN32)
	128	/* XXX: put correct support for win32 */
	129	static int read_password(char *buf, int buf_size)
	130	{
	131	int c, i;
	132	printf("Password: ");
	133	fflush(stdout);
	134	i = 0;
	135	for(;;) {
	136	c = getchar();
	137	if (c == '\n')
	138	break;
	139	if (i < (buf_size - 1))
	140	buf[i++] = c;
	141	}
	142	buf[i] = '\0';
	143	return 0;
	144	}
	145
	146	#else
	147
	148	#include <termios.h>
	149
	150	static struct termios oldtty;
	151
	152	static void term_exit(void)
	153	{
	154	tcsetattr (0, TCSANOW, &oldtty);
	155	}
	156
	157	static void term_init(void)
	158	{
	159	struct termios tty;
	160
	161	tcgetattr (0, &tty);
	162	oldtty = tty;
	163
	164	tty.c_iflag &= ~(IGNBRK\|BRKINT\|PARMRK\|ISTRIP
	165	\|INLCR\|IGNCR\|ICRNL\|IXON);
	166	tty.c_oflag \|= OPOST;
	167	tty.c_lflag &= ~(ECHO\|ECHONL\|ICANON\|IEXTEN);
	168	tty.c_cflag &= ~(CSIZE\|PARENB);
	169	tty.c_cflag \|= CS8;
	170	tty.c_cc[VMIN] = 1;
	171	tty.c_cc[VTIME] = 0;
3b46e624	172
ea2384d3 FB	173	tcsetattr (0, TCSANOW, &tty);
	174
	175	atexit(term_exit);
	176	}
	177
	178	int read_password(char *buf, int buf_size)
	179	{
	180	uint8_t ch;
	181	int i, ret;
	182
	183	printf("password: ");
	184	fflush(stdout);
	185	term_init();
	186	i = 0;
	187	for(;;) {
	188	ret = read(0, &ch, 1);
	189	if (ret == -1) {
	190	if (errno == EAGAIN \|\| errno == EINTR) {
	191	continue;
	192	} else {
	193	ret = -1;
	194	break;
	195	}
	196	} else if (ret == 0) {
	197	ret = -1;
	198	break;
	199	} else {
	200	if (ch == '\r') {
	201	ret = 0;
	202	break;
	203	}
	204	if (i < (buf_size - 1))
	205	buf[i++] = ch;
	206	}
	207	}
	208	term_exit();
	209	buf[i] = '\0';
	210	printf("\n");
	211	return ret;
	212	}
	213	#endif
	214
75c23805 FB	215	static BlockDriverState bdrv_new_open(const char filename,
	216	const char *fmt)
	217	{
	218	BlockDriverState *bs;
	219	BlockDriver *drv;
	220	char password[256];
	221
	222	bs = bdrv_new("");
	223	if (!bs)
	224	error("Not enough memory");
	225	if (fmt) {
	226	drv = bdrv_find_format(fmt);
	227	if (!drv)
	228	error("Unknown file format '%s'", fmt);
	229	} else {
	230	drv = NULL;
	231	}
	232	if (bdrv_open2(bs, filename, 0, drv) < 0) {
	233	error("Could not open '%s'", filename);
	234	}
	235	if (bdrv_is_encrypted(bs)) {
	236	printf("Disk image '%s' is encrypted.\n", filename);
	237	if (read_password(password, sizeof(password)) < 0)
	238	error("No password given");
	239	if (bdrv_set_key(bs, password) < 0)
	240	error("invalid password");
	241	}
	242	return bs;
	243	}
	244
ea2384d3 FB	245	static int img_create(int argc, char **argv)
ea2384d3 FB	246	{
ec36ba14	247	int c, ret, flags;
ea2384d3 FB	248	const char *fmt = "raw";
	249	const char *filename;
	250	const char *base_filename = NULL;
	251	int64_t size;
	252	const char *p;
	253	BlockDriver *drv;
3b46e624	254
ec36ba14	255	flags = 0;
ea2384d3	256	for(;;) {
ec36ba14	257	c = getopt(argc, argv, "b:f:he6");
ea2384d3 FB	258	if (c == -1)
	259	break;
	260	switch(c) {
	261	case 'h':
	262	help();
	263	break;
	264	case 'b':
	265	base_filename = optarg;
	266	break;
	267	case 'f':
	268	fmt = optarg;
	269	break;
	270	case 'e':
ec36ba14	271	flags \|= BLOCK_FLAG_ENCRYPT;
ea2384d3	272	break;
d8871c5a	273	case '6':
ec36ba14	274	flags \|= BLOCK_FLAG_COMPAT6;
d8871c5a	275	break;
ea2384d3 FB	276	}
ea2384d3 FB	277	}
5fafdf24	278	if (optind >= argc)
ea2384d3 FB	279	help();
	280	filename = argv[optind++];
	281	size = 0;
75c23805 FB	282	if (base_filename) {
	283	BlockDriverState *bs;
	284	bs = bdrv_new_open(base_filename, NULL);
	285	bdrv_get_geometry(bs, &size);
	286	size *= 512;
	287	bdrv_delete(bs);
	288	} else {
ea2384d3 FB	289	if (optind >= argc)
	290	help();
	291	p = argv[optind];
	292	size = strtoul(p, (char **)&p, 0);
	293	if (*p == 'M') {
	294	size = 1024 1024;
	295	} else if (*p == 'G') {
	296	size = 1024 1024 * 1024;
	297	} else if (p == 'k' \|\| p == 'K' \|\| *p == '\0') {
	298	size *= 1024;
	299	} else {
	300	help();
	301	}
	302	}
	303	drv = bdrv_find_format(fmt);
	304	if (!drv)
	305	error("Unknown file format '%s'", fmt);
0cfec834	306	printf("Formatting '%s', fmt=%s",
ea2384d3	307	filename, fmt);
ec36ba14	308	if (flags & BLOCK_FLAG_ENCRYPT)
ea2384d3	309	printf(", encrypted");
ec36ba14 TS	310	if (flags & BLOCK_FLAG_COMPAT6)
ec36ba14 TS	311	printf(", compatibility level=6");
75c23805 FB	312	if (base_filename) {
75c23805 FB	313	printf(", backing_file=%s",
ea2384d3	314	base_filename);
75c23805	315	}
ec3757de	316	printf(", size=%" PRId64 " kB\n", (int64_t) (size / 1024));
ec36ba14	317	ret = bdrv_create(drv, filename, size / 512, base_filename, flags);
ea2384d3 FB	318	if (ret < 0) {
ea2384d3 FB	319	if (ret == -ENOTSUP) {
3c56521b	320	error("Formatting or formatting option not supported for file format '%s'", fmt);
ea2384d3 FB	321	} else {
	322	error("Error while formatting");
	323	}
	324	}
	325	return 0;
	326	}
	327
	328	static int img_commit(int argc, char **argv)
	329	{
	330	int c, ret;
	331	const char filename, fmt;
	332	BlockDriver *drv;
	333	BlockDriverState *bs;
	334
	335	fmt = NULL;
	336	for(;;) {
	337	c = getopt(argc, argv, "f:h");
	338	if (c == -1)
	339	break;
	340	switch(c) {
	341	case 'h':
	342	help();
	343	break;
	344	case 'f':
	345	fmt = optarg;
	346	break;
	347	}
	348	}
5fafdf24	349	if (optind >= argc)
ea2384d3 FB	350	help();
	351	filename = argv[optind++];
	352
	353	bs = bdrv_new("");
	354	if (!bs)
	355	error("Not enough memory");
	356	if (fmt) {
	357	drv = bdrv_find_format(fmt);
	358	if (!drv)
	359	error("Unknown file format '%s'", fmt);
	360	} else {
	361	drv = NULL;
	362	}
	363	if (bdrv_open2(bs, filename, 0, drv) < 0) {
	364	error("Could not open '%s'", filename);
	365	}
	366	ret = bdrv_commit(bs);
	367	switch(ret) {
	368	case 0:
	369	printf("Image committed.\n");
	370	break;
	371	case -ENOENT:
	372	error("No disk inserted");
	373	break;
	374	case -EACCES:
	375	error("Image is read-only");
	376	break;
	377	case -ENOTSUP:
	378	error("Image is already committed");
	379	break;
	380	default:
	381	error("Error while committing image");
	382	break;
	383	}
	384
	385	bdrv_delete(bs);
	386	return 0;
	387	}
	388
	389	static int is_not_zero(const uint8_t *sector, int len)
	390	{
	391	int i;
	392	len >>= 2;
	393	for(i = 0;i < len; i++) {
	394	if (((uint32_t *)sector)[i] != 0)
	395	return 1;
	396	}
	397	return 0;
	398	}
	399
	400	static int is_allocated_sectors(const uint8_t buf, int n, int pnum)
	401	{
	402	int v, i;
	403
	404	if (n <= 0) {
	405	*pnum = 0;
	406	return 0;
	407	}
	408	v = is_not_zero(buf, 512);
	409	for(i = 1; i < n; i++) {
	410	buf += 512;
	411	if (v != is_not_zero(buf, 512))
	412	break;
	413	}
414	*pnum = i;
415	return v;
416	}
417
ea2384d3 FB	418	#define IO_BUF_SIZE 65536
	419
	420	static int img_convert(int argc, char **argv)
	421	{
926c2d23 AZ	422	int c, ret, n, n1, bs_n, bs_i, flags, cluster_size, cluster_sectors;
926c2d23 AZ	423	const char fmt, out_fmt, *out_filename;
ea2384d3	424	BlockDriver *drv;
926c2d23 AZ	425	BlockDriverState *bs, out_bs;
926c2d23 AZ	426	int64_t total_sectors, nb_sectors, sector_num, bs_offset, bs_sectors;
ea2384d3 FB	427	uint8_t buf[IO_BUF_SIZE];
ea2384d3 FB	428	const uint8_t *buf1;
faea38e7	429	BlockDriverInfo bdi;
ea2384d3 FB	430
	431	fmt = NULL;
	432	out_fmt = "raw";
ec36ba14	433	flags = 0;
ea2384d3	434	for(;;) {
ec36ba14	435	c = getopt(argc, argv, "f:O:hce6");
ea2384d3 FB	436	if (c == -1)
	437	break;
	438	switch(c) {
	439	case 'h':
	440	help();
	441	break;
	442	case 'f':
	443	fmt = optarg;
	444	break;
	445	case 'O':
	446	out_fmt = optarg;
	447	break;
	448	case 'c':
ec36ba14	449	flags \|= BLOCK_FLAG_COMPRESS;
ea2384d3 FB	450	break;
ea2384d3 FB	451	case 'e':
ec36ba14 TS	452	flags \|= BLOCK_FLAG_ENCRYPT;
	453	break;
	454	case '6':
	455	flags \|= BLOCK_FLAG_COMPAT6;
ea2384d3 FB	456	break;
	457	}
	458	}
3b46e624	459
926c2d23 AZ	460	bs_n = argc - optind - 1;
	461	if (bs_n < 1) help();
	462
	463	out_filename = argv[argc - 1];
	464
	465	bs = calloc(bs_n, sizeof(BlockDriverState *));
	466	if (!bs)
	467	error("Out of memory");
	468
	469	total_sectors = 0;
	470	for (bs_i = 0; bs_i < bs_n; bs_i++) {
	471	bs[bs_i] = bdrv_new_open(argv[optind + bs_i], fmt);
	472	if (!bs[bs_i])
	473	error("Could not open '%s'", argv[optind + bs_i]);
	474	bdrv_get_geometry(bs[bs_i], &bs_sectors);
	475	total_sectors += bs_sectors;
	476	}
ea2384d3 FB	477
	478	drv = bdrv_find_format(out_fmt);
	479	if (!drv)
d34dda5e	480	error("Unknown file format '%s'", out_fmt);
ec36ba14	481	if (flags & BLOCK_FLAG_COMPRESS && drv != &bdrv_qcow && drv != &bdrv_qcow2)
ea2384d3	482	error("Compression not supported for this file format");
ec36ba14	483	if (flags & BLOCK_FLAG_ENCRYPT && drv != &bdrv_qcow && drv != &bdrv_qcow2)
ea2384d3	484	error("Encryption not supported for this file format");
d8871c5a	485	if (flags & BLOCK_FLAG_COMPAT6 && drv != &bdrv_vmdk)
ec36ba14 TS	486	error("Alternative compatibility level not supported for this file format");
ec36ba14 TS	487	if (flags & BLOCK_FLAG_ENCRYPT && flags & BLOCK_FLAG_COMPRESS)
ea2384d3	488	error("Compression and encryption not supported at the same time");
926c2d23	489
ec36ba14	490	ret = bdrv_create(drv, out_filename, total_sectors, NULL, flags);
ea2384d3 FB	491	if (ret < 0) {
ea2384d3 FB	492	if (ret == -ENOTSUP) {
3c56521b	493	error("Formatting not supported for file format '%s'", fmt);
ea2384d3 FB	494	} else {
	495	error("Error while formatting '%s'", out_filename);
	496	}
	497	}
3b46e624	498
ea2384d3 FB	499	out_bs = bdrv_new_open(out_filename, out_fmt);
ea2384d3 FB	500
926c2d23 AZ	501	bs_i = 0;
	502	bs_offset = 0;
	503	bdrv_get_geometry(bs[0], &bs_sectors);
	504
	505	if (flags & BLOCK_FLAG_COMPRESS) {
faea38e7 FB	506	if (bdrv_get_info(out_bs, &bdi) < 0)
	507	error("could not get block driver info");
	508	cluster_size = bdi.cluster_size;
ea2384d3 FB	509	if (cluster_size <= 0 \|\| cluster_size > IO_BUF_SIZE)
	510	error("invalid cluster size");
	511	cluster_sectors = cluster_size >> 9;
	512	sector_num = 0;
	513	for(;;) {
926c2d23 AZ	514	int64_t bs_num;
	515	int remainder;
	516	uint8_t *buf2;
	517
ea2384d3 FB	518	nb_sectors = total_sectors - sector_num;
	519	if (nb_sectors <= 0)
	520	break;
	521	if (nb_sectors >= cluster_sectors)
	522	n = cluster_sectors;
	523	else
	524	n = nb_sectors;
926c2d23 AZ	525
	526	bs_num = sector_num - bs_offset;
	527	assert (bs_num >= 0);
	528	remainder = n;
	529	buf2 = buf;
	530	while (remainder > 0) {
	531	int nlow;
	532	while (bs_num == bs_sectors) {
	533	bs_i++;
	534	assert (bs_i < bs_n);
	535	bs_offset += bs_sectors;
	536	bdrv_get_geometry(bs[bs_i], &bs_sectors);
	537	bs_num = 0;
	538	/* printf("changing part: sector_num=%lld, "
	539	"bs_i=%d, bs_offset=%lld, bs_sectors=%lld\n",
	540	sector_num, bs_i, bs_offset, bs_sectors); */
	541	}
	542	assert (bs_num < bs_sectors);
	543
	544	nlow = (remainder > bs_sectors - bs_num) ? bs_sectors - bs_num : remainder;
	545
	546	if (bdrv_read(bs[bs_i], bs_num, buf2, nlow) < 0)
	547	error("error while reading");
	548
	549	buf2 += nlow * 512;
	550	bs_num += nlow;
	551
	552	remainder -= nlow;
	553	}
	554	assert (remainder == 0);
	555
ea2384d3 FB	556	if (n < cluster_sectors)
	557	memset(buf + n * 512, 0, cluster_size - n * 512);
	558	if (is_not_zero(buf, cluster_size)) {
5fafdf24	559	if (bdrv_write_compressed(out_bs, sector_num, buf,
faea38e7	560	cluster_sectors) != 0)
ec3757de FB	561	error("error while compressing sector %" PRId64,
ec3757de FB	562	sector_num);
ea2384d3 FB	563	}
	564	sector_num += n;
	565	}
faea38e7 FB	566	/* signal EOF to align */
faea38e7 FB	567	bdrv_write_compressed(out_bs, 0, NULL, 0);
ea2384d3 FB	568	} else {
	569	sector_num = 0;
	570	for(;;) {
	571	nb_sectors = total_sectors - sector_num;
	572	if (nb_sectors <= 0)
	573	break;
	574	if (nb_sectors >= (IO_BUF_SIZE / 512))
	575	n = (IO_BUF_SIZE / 512);
	576	else
	577	n = nb_sectors;
926c2d23 AZ	578
	579	while (sector_num - bs_offset >= bs_sectors) {
	580	bs_i ++;
	581	assert (bs_i < bs_n);
	582	bs_offset += bs_sectors;
	583	bdrv_get_geometry(bs[bs_i], &bs_sectors);
	584	/* printf("changing part: sector_num=%lld, bs_i=%d, "
	585	"bs_offset=%lld, bs_sectors=%lld\n",
	586	sector_num, bs_i, bs_offset, bs_sectors); */
	587	}
	588
	589	if (n > bs_offset + bs_sectors - sector_num)
	590	n = bs_offset + bs_sectors - sector_num;
	591
	592	if (bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n) < 0)
ea2384d3 FB	593	error("error while reading");
	594	/* NOTE: at the same time we convert, we do not write zero
	595	sectors to have a chance to compress the image. Ideally, we
	596	should add a specific call to have the info to go faster */
	597	buf1 = buf;
	598	while (n > 0) {
	599	if (is_allocated_sectors(buf1, n, &n1)) {
5fafdf24	600	if (bdrv_write(out_bs, sector_num, buf1, n1) < 0)
ea2384d3 FB	601	error("error while writing");
	602	}
	603	sector_num += n1;
	604	n -= n1;
	605	buf1 += n1 * 512;
	606	}
	607	}
	608	}
	609	bdrv_delete(out_bs);
926c2d23 AZ	610	for (bs_i = 0; bs_i < bs_n; bs_i++)
	611	bdrv_delete(bs[bs_i]);
	612	free(bs);
ea2384d3 FB	613	return 0;
	614	}
	615
57d1a2b6 FB	616	#ifdef _WIN32
	617	static int64_t get_allocated_file_size(const char *filename)
	618	{
e8445331 FB	619	typedef DWORD (WINAPI * get_compressed_t)(const char filename, DWORD high);
e8445331 FB	620	get_compressed_t get_compressed;
57d1a2b6	621	struct _stati64 st;
e8445331 FB	622
	623	/* WinNT support GetCompressedFileSize to determine allocate size */
	624	get_compressed = (get_compressed_t) GetProcAddress(GetModuleHandle("kernel32"), "GetCompressedFileSizeA");
	625	if (get_compressed) {
	626	DWORD high, low;
	627	low = get_compressed(filename, &high);
	628	if (low != 0xFFFFFFFFlu \|\| GetLastError() == NO_ERROR)
	629	return (((int64_t) high) << 32) + low;
	630	}
	631
5fafdf24	632	if (_stati64(filename, &st) < 0)
57d1a2b6 FB	633	return -1;
	634	return st.st_size;
	635	}
	636	#else
	637	static int64_t get_allocated_file_size(const char *filename)
	638	{
	639	struct stat st;
5fafdf24	640	if (stat(filename, &st) < 0)
57d1a2b6 FB	641	return -1;
	642	return (int64_t)st.st_blocks * 512;
	643	}
	644	#endif
	645
faea38e7 FB	646	static void dump_snapshots(BlockDriverState *bs)
	647	{
	648	QEMUSnapshotInfo sn_tab, sn;
	649	int nb_sns, i;
	650	char buf[256];
	651
	652	nb_sns = bdrv_snapshot_list(bs, &sn_tab);
	653	if (nb_sns <= 0)
	654	return;
	655	printf("Snapshot list:\n");
	656	printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL));
	657	for(i = 0; i < nb_sns; i++) {
	658	sn = &sn_tab[i];
	659	printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn));
	660	}
	661	qemu_free(sn_tab);
	662	}
	663
ea2384d3 FB	664	static int img_info(int argc, char **argv)
	665	{
	666	int c;
	667	const char filename, fmt;
	668	BlockDriver *drv;
	669	BlockDriverState *bs;
	670	char fmt_name[128], size_buf[128], dsize_buf[128];
57d1a2b6	671	int64_t total_sectors, allocated_size;
93b6b2a3 FB	672	char backing_filename[1024];
93b6b2a3 FB	673	char backing_filename2[1024];
faea38e7	674	BlockDriverInfo bdi;
ea2384d3 FB	675
	676	fmt = NULL;
	677	for(;;) {
	678	c = getopt(argc, argv, "f:h");
	679	if (c == -1)
	680	break;
	681	switch(c) {
	682	case 'h':
	683	help();
	684	break;
	685	case 'f':
	686	fmt = optarg;
	687	break;
	688	}
	689	}
5fafdf24	690	if (optind >= argc)
ea2384d3 FB	691	help();
	692	filename = argv[optind++];
	693
	694	bs = bdrv_new("");
	695	if (!bs)
	696	error("Not enough memory");
	697	if (fmt) {
	698	drv = bdrv_find_format(fmt);
	699	if (!drv)
	700	error("Unknown file format '%s'", fmt);
	701	} else {
	702	drv = NULL;
	703	}
	704	if (bdrv_open2(bs, filename, 0, drv) < 0) {
	705	error("Could not open '%s'", filename);
	706	}
	707	bdrv_get_format(bs, fmt_name, sizeof(fmt_name));
	708	bdrv_get_geometry(bs, &total_sectors);
	709	get_human_readable_size(size_buf, sizeof(size_buf), total_sectors * 512);
57d1a2b6 FB	710	allocated_size = get_allocated_file_size(filename);
57d1a2b6 FB	711	if (allocated_size < 0)
de167e41 FB	712	sprintf(dsize_buf, "unavailable");
de167e41 FB	713	else
5fafdf24	714	get_human_readable_size(dsize_buf, sizeof(dsize_buf),
de167e41	715	allocated_size);
ea2384d3 FB	716	printf("image: %s\n"
ea2384d3 FB	717	"file format: %s\n"
ec3757de	718	"virtual size: %s (%" PRId64 " bytes)\n"
ea2384d3	719	"disk size: %s\n",
5fafdf24	720	filename, fmt_name, size_buf,
ec3757de	721	(total_sectors * 512),
ea2384d3 FB	722	dsize_buf);
	723	if (bdrv_is_encrypted(bs))
	724	printf("encrypted: yes\n");
faea38e7	725	if (bdrv_get_info(bs, &bdi) >= 0) {
5fafdf24	726	if (bdi.cluster_size != 0)
faea38e7 FB	727	printf("cluster_size: %d\n", bdi.cluster_size);
faea38e7 FB	728	}
93b6b2a3	729	bdrv_get_backing_filename(bs, backing_filename, sizeof(backing_filename));
faea38e7	730	if (backing_filename[0] != '\0') {
93b6b2a3 FB	731	path_combine(backing_filename2, sizeof(backing_filename2),
93b6b2a3 FB	732	filename, backing_filename);
5fafdf24	733	printf("backing file: %s (actual path: %s)\n",
93b6b2a3 FB	734	backing_filename,
93b6b2a3 FB	735	backing_filename2);
faea38e7 FB	736	}
faea38e7 FB	737	dump_snapshots(bs);
ea2384d3 FB	738	bdrv_delete(bs);
	739	return 0;
	740	}
	741
	742	int main(int argc, char **argv)
	743	{
	744	const char *cmd;
	745
	746	bdrv_init();
	747	if (argc < 2)
	748	help();
	749	cmd = argv[1];
e3888186	750	optind++;
ea2384d3 FB	751	if (!strcmp(cmd, "create")) {
	752	img_create(argc, argv);
	753	} else if (!strcmp(cmd, "commit")) {
	754	img_commit(argc, argv);
	755	} else if (!strcmp(cmd, "convert")) {
	756	img_convert(argc, argv);
	757	} else if (!strcmp(cmd, "info")) {
	758	img_info(argc, argv);
	759	} else {
	760	help();
	761	}
	762	return 0;
	763	}