/*
- * create a COW disk image
- *
- * Copyright (c) 2003 Fabrice Bellard
- *
+ * QEMU disk image utility
+ *
+ * Copyright (c) 2003-2008 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
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
-#include "vl.h"
+#include "qemu-common.h"
+#include "block_int.h"
+#include <assert.h>
+
+#ifdef _WIN32
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#endif
void *get_mmap_addr(unsigned long size)
{
return ptr;
}
-void pstrcpy(char *buf, int buf_size, const char *str)
-{
- int c;
- char *q = buf;
-
- if (buf_size <= 0)
- return;
-
- for(;;) {
- c = *str++;
- if (c == 0 || q >= buf + buf_size - 1)
- break;
- *q++ = c;
- }
- *q = '\0';
-}
-
-/* strcat and truncate. */
-char *pstrcat(char *buf, int buf_size, const char *s)
-{
- int len;
- len = strlen(buf);
- if (len < buf_size)
- pstrcpy(buf + len, buf_size - len, s);
- return buf;
-}
-
-int strstart(const char *str, const char *val, const char **ptr)
-{
- const char *p, *q;
- p = str;
- q = val;
- while (*q != '\0') {
- if (*p != *q)
- return 0;
- p++;
- q++;
- }
- if (ptr)
- *ptr = p;
- return 1;
-}
-
-void term_printf(const char *fmt, ...)
-{
- va_list ap;
- va_start(ap, fmt);
- vprintf(fmt, ap);
- va_end(ap);
-}
-
-void __attribute__((noreturn)) error(const char *fmt, ...)
+static void __attribute__((noreturn)) error(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
printf(" %s", name);
}
-void help(void)
+static void help(void)
{
- printf("qemu-img version " QEMU_VERSION ", Copyright (c) 2004-2005 Fabrice Bellard\n"
+ printf("qemu-img version " QEMU_VERSION ", Copyright (c) 2004-2008 Fabrice Bellard\n"
"usage: qemu-img command [command options]\n"
"QEMU disk image utility\n"
"\n"
"Command syntax:\n"
- " create [-e] [-b base_image] [-f fmt] filename [size]\n"
+ " create [-e] [-6] [-b base_image] [-f fmt] filename [size]\n"
" commit [-f fmt] filename\n"
- " convert [-c] [-e] [-f fmt] filename [-O output_fmt] output_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"
" '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);
exit(1);
}
-
-#define NB_SUFFIXES 4
-
-static void get_human_readable_size(char *buf, int buf_size, int64_t size)
-{
- char suffixes[NB_SUFFIXES] = "KMGT";
- int64_t base;
- int i;
-
- if (size <= 999) {
- snprintf(buf, buf_size, "%lld", (long long) size);
- } else {
- base = 1024;
- for(i = 0; i < NB_SUFFIXES; i++) {
- if (size < (10 * base)) {
- snprintf(buf, buf_size, "%0.1f%c",
- (double)size / base,
- suffixes[i]);
- break;
- } else if (size < (1000 * base) || i == (NB_SUFFIXES - 1)) {
- snprintf(buf, buf_size, "%lld%c",
- (long long) ((size + (base >> 1)) / base),
- suffixes[i]);
- break;
- }
- base = base * 1024;
- }
- }
-}
-
#if defined(WIN32)
/* XXX: put correct support for win32 */
static int read_password(char *buf, int buf_size)
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)
+static int read_password(char *buf, int buf_size)
{
uint8_t ch;
int i, ret;
static int img_create(int argc, char **argv)
{
- int c, ret, encrypted;
+ int c, ret, flags;
const char *fmt = "raw";
const char *filename;
const char *base_filename = NULL;
- int64_t size;
+ uint64_t size;
const char *p;
BlockDriver *drv;
-
- encrypted = 0;
+
+ flags = 0;
for(;;) {
- c = getopt(argc, argv, "b:f:he");
+ c = getopt(argc, argv, "b:f:he6");
if (c == -1)
break;
switch(c) {
fmt = optarg;
break;
case 'e':
- encrypted = 1;
+ flags |= BLOCK_FLAG_ENCRYPT;
+ break;
+ case '6':
+ flags |= BLOCK_FLAG_COMPAT6;
break;
}
}
- if (optind >= argc)
+ if (optind >= argc)
help();
filename = argv[optind++];
size = 0;
drv = bdrv_find_format(fmt);
if (!drv)
error("Unknown file format '%s'", fmt);
- printf("Formating '%s', fmt=%s",
+ printf("Formatting '%s', fmt=%s",
filename, fmt);
- if (encrypted)
+ 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=%lld kB\n", (long long) (size / 1024));
- ret = bdrv_create(drv, filename, size / 512, base_filename, encrypted);
+ printf(", size=%" PRIu64 " kB\n", 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);
break;
}
}
- if (optind >= argc)
+ if (optind >= argc)
help();
filename = argv[optind++];
static int img_convert(int argc, char **argv)
{
- int c, ret, n, n1, compress, cluster_size, cluster_sectors, encrypt;
- const char *filename, *fmt, *out_fmt, *out_filename;
+ 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;
+ BlockDriverState **bs, *out_bs;
+ int64_t total_sectors, nb_sectors, sector_num, bs_offset;
+ uint64_t bs_sectors;
uint8_t buf[IO_BUF_SIZE];
const uint8_t *buf1;
+ BlockDriverInfo bdi;
fmt = NULL;
out_fmt = "raw";
- compress = 0;
- encrypt = 0;
+ flags = 0;
for(;;) {
- c = getopt(argc, argv, "f:O:hce");
+ c = getopt(argc, argv, "f:O:hce6");
if (c == -1)
break;
switch(c) {
out_fmt = optarg;
break;
case 'c':
- compress = 1;
+ flags |= BLOCK_FLAG_COMPRESS;
break;
case 'e':
- encrypt = 1;
+ flags |= BLOCK_FLAG_ENCRYPT;
+ break;
+ case '6':
+ flags |= BLOCK_FLAG_COMPAT6;
break;
}
}
- if (optind >= argc)
- help();
- filename = argv[optind++];
- if (optind >= argc)
- help();
- out_filename = argv[optind++];
-
- bs = bdrv_new_open(filename, fmt);
+
+ 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'", fmt);
- if (compress && drv != &bdrv_qcow)
+ 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 (encrypt && drv != &bdrv_qcow)
+ if (flags & BLOCK_FLAG_ENCRYPT && drv != &bdrv_qcow && drv != &bdrv_qcow2)
error("Encryption not supported for this file format");
- if (compress && encrypt)
+ 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");
- bdrv_get_geometry(bs, &total_sectors);
- ret = bdrv_create(drv, out_filename, total_sectors, NULL, encrypt);
+
+ 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);
error("Error while formatting '%s'", out_filename);
}
}
-
+
out_bs = bdrv_new_open(out_filename, out_fmt);
- if (compress) {
- cluster_size = qcow_get_cluster_size(out_bs);
+ 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;
n = cluster_sectors;
else
n = nb_sectors;
- if (bdrv_read(bs, sector_num, buf, n) < 0)
- error("error while reading");
+
+ 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 (qcow_compress_cluster(out_bs, sector_num, buf) != 0)
- error("error while compressing sector %lld", sector_num);
+ 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(;;) {
n = (IO_BUF_SIZE / 512);
else
n = nb_sectors;
- if (bdrv_read(bs, sector_num, buf, n) < 0)
+
+ 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
buf1 = buf;
while (n > 0) {
if (is_allocated_sectors(buf1, n, &n1)) {
- if (bdrv_write(out_bs, sector_num, buf1, n1) < 0)
+ if (bdrv_write(out_bs, sector_num, buf1, n1) < 0)
error("error while writing");
}
sector_num += n1;
}
}
bdrv_delete(out_bs);
- bdrv_delete(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;
- if (_stati64(filename, &st) < 0)
+
+ /* 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;
}
static int64_t get_allocated_file_size(const char *filename)
{
struct stat st;
- if (stat(filename, &st) < 0)
+ 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;
BlockDriver *drv;
BlockDriverState *bs;
char fmt_name[128], size_buf[128], dsize_buf[128];
- int64_t total_sectors, allocated_size;
+ uint64_t total_sectors;
+ int64_t allocated_size;
+ char backing_filename[1024];
+ char backing_filename2[1024];
+ BlockDriverInfo bdi;
fmt = NULL;
for(;;) {
break;
}
}
- if (optind >= argc)
+ if (optind >= argc)
help();
filename = argv[optind++];
if (allocated_size < 0)
sprintf(dsize_buf, "unavailable");
else
- get_human_readable_size(dsize_buf, sizeof(dsize_buf),
+ get_human_readable_size(dsize_buf, sizeof(dsize_buf),
allocated_size);
printf("image: %s\n"
"file format: %s\n"
- "virtual size: %s (%lld bytes)\n"
+ "virtual size: %s (%" PRId64 " bytes)\n"
"disk size: %s\n",
- filename, fmt_name, size_buf,
- (long long) (total_sectors * 512),
+ 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;
}
projects / mirror_qemu.git / blobdiff