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-rw-r--r--qemu-img.c716
1 files changed, 0 insertions, 716 deletions
diff --git a/qemu-img.c b/qemu-img.c
deleted file mode 100644
index c5a8e1a..0000000
--- a/qemu-img.c
+++ /dev/null
@@ -1,716 +0,0 @@
-/*
- * create a COW disk image
- *
- * Copyright (c) 2003 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"
-
-#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 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, ...)
-{
- 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) 2004-2005 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"
- " commit [-f fmt] filename\n"
- " convert [-c] [-e] [-f fmt] filename [-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"
- );
- printf("\nSupported format:");
- bdrv_iterate_format(format_print, NULL);
- printf("\n");
- exit(1);
-}
-
-
-#define NB_SUFFIXES 4
-
-static void get_human_readable_size(char *buf, int buf_size, int64_t size)
-{
- static const char suffixes[NB_SUFFIXES] = "KMGT";
- int64_t base;
- int i;
-
- if (size <= 999) {
- snprintf(buf, buf_size, "%" PRId64, 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, "%" PRId64 "%c",
- ((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)
-{
- 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, encrypted;
- const char *fmt = "raw";
- const char *filename;
- const char *base_filename = NULL;
- int64_t size;
- const char *p;
- BlockDriver *drv;
-
- encrypted = 0;
- for(;;) {
- c = getopt(argc, argv, "b:f:he");
- if (c == -1)
- break;
- switch(c) {
- case 'h':
- help();
- break;
- case 'b':
- base_filename = optarg;
- break;
- case 'f':
- fmt = optarg;
- break;
- case 'e':
- encrypted = 1;
- 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("Formating '%s', fmt=%s",
- filename, fmt);
- if (encrypted)
- printf(", encrypted");
- 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, encrypted);
- 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, compress, cluster_size, cluster_sectors, encrypt;
- const char *filename, *fmt, *out_fmt, *out_filename;
- BlockDriver *drv;
- BlockDriverState *bs, *out_bs;
- int64_t total_sectors, nb_sectors, sector_num;
- uint8_t buf[IO_BUF_SIZE];
- const uint8_t *buf1;
-
- fmt = NULL;
- out_fmt = "raw";
- compress = 0;
- encrypt = 0;
- for(;;) {
- c = getopt(argc, argv, "f:O:hce");
- if (c == -1)
- break;
- switch(c) {
- case 'h':
- help();
- break;
- case 'f':
- fmt = optarg;
- break;
- case 'O':
- out_fmt = optarg;
- break;
- case 'c':
- compress = 1;
- break;
- case 'e':
- encrypt = 1;
- break;
- }
- }
- if (optind >= argc)
- help();
- filename = argv[optind++];
- if (optind >= argc)
- help();
- out_filename = argv[optind++];
-
- bs = bdrv_new_open(filename, fmt);
-
- drv = bdrv_find_format(out_fmt);
- if (!drv)
- error("Unknown file format '%s'", fmt);
- if (compress && drv != &bdrv_qcow)
- error("Compression not supported for this file format");
- if (encrypt && drv != &bdrv_qcow)
- error("Encryption not supported for this file format");
- if (compress && encrypt)
- 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);
- 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);
-
- if (compress) {
- cluster_size = qcow_get_cluster_size(out_bs);
- if (cluster_size <= 0 || cluster_size > IO_BUF_SIZE)
- error("invalid cluster size");
- cluster_sectors = cluster_size >> 9;
- sector_num = 0;
- for(;;) {
- nb_sectors = total_sectors - sector_num;
- if (nb_sectors <= 0)
- break;
- if (nb_sectors >= cluster_sectors)
- n = cluster_sectors;
- else
- n = nb_sectors;
- if (bdrv_read(bs, sector_num, buf, n) < 0)
- error("error while reading");
- 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 %" PRId64,
- sector_num);
- }
- sector_num += n;
- }
- } 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;
- if (bdrv_read(bs, sector_num, 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);
- bdrv_delete(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 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;
-
- 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");
- 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;
-}
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