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/*
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* QEMU disk image utility
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu-common.h" |
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#include "osdep.h" |
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#include "block_int.h" |
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#include <assert.h> |
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#include <stdio.h> |
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#ifdef _WIN32
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#include <windows.h> |
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#endif
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/* Default to cache=writeback as data integrity is not important for qemu-tcg. */
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#define BRDV_O_FLAGS BDRV_O_CACHE_WB
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static void QEMU_NORETURN error(const char *fmt, ...) |
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{ |
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va_list ap; |
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va_start(ap, fmt); |
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fprintf(stderr, "qemu-img: ");
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vfprintf(stderr, fmt, ap); |
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fprintf(stderr, "\n");
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exit(1);
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va_end(ap); |
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} |
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|
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static void format_print(void *opaque, const char *name) |
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{ |
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printf(" %s", name);
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} |
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/* Please keep in synch with qemu-img.texi */
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static void help(void) |
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{ |
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printf("qemu-img version " QEMU_VERSION ", Copyright (c) 2004-2008 Fabrice Bellard\n" |
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"usage: qemu-img command [command options]\n"
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"QEMU disk image utility\n"
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"\n"
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"Command syntax:\n"
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" check [-f fmt] filename\n"
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" create [-e] [-6] [-F fmt] [-b base_image] [-f fmt] filename [size]\n"
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" commit [-f fmt] filename\n"
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" convert [-c] [-e] [-6] [-f fmt] [-O output_fmt] [-B output_base_image] filename [filename2 [...]] output_filename\n"
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" info [-f fmt] filename\n"
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" snapshot [-l | -a snapshot | -c snapshot | -d snapshot] filename\n"
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"\n"
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"Command parameters:\n"
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" 'filename' is a disk image filename\n"
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" 'base_image' is the read-only disk image which is used as base for a copy on\n"
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" write image; the copy on write image only stores the modified data\n"
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" 'output_base_image' forces the output image to be created as a copy on write\n"
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" image of the specified base image; 'output_base_image' should have the same\n"
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" content as the input's base image, however the path, image format, etc may\n"
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" differ\n"
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" 'fmt' is the disk image format. It is guessed automatically in most cases\n"
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" 'size' is the disk image size in kilobytes. Optional suffixes\n"
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" 'M' (megabyte, 1024 * 1024) and 'G' (gigabyte, 1024 * 1024 * 1024) are\n"
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" supported any 'k' or 'K' is ignored\n"
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" 'output_filename' is the destination disk image filename\n"
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" 'output_fmt' is the destination format\n"
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" '-c' indicates that target image must be compressed (qcow format only)\n"
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" '-e' indicates that the target image must be encrypted (qcow format only)\n"
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" '-6' indicates that the target image must use compatibility level 6 (vmdk format only)\n"
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" '-h' with or without a command shows this help and lists the supported formats\n"
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"\n"
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"Parameters to snapshot subcommand:\n"
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" 'snapshot' is the name of the snapshot to create, apply or delete\n"
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" '-a' applies a snapshot (revert disk to saved state)\n"
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" '-c' creates a snapshot\n"
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" '-d' deletes a snapshot\n"
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" '-l' lists all snapshots in the given image\n"
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); |
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printf("\nSupported formats:");
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bdrv_iterate_format(format_print, NULL);
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printf("\n");
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exit(1);
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} |
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#if defined(WIN32)
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/* XXX: put correct support for win32 */
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static int read_password(char *buf, int buf_size) |
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{ |
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int c, i;
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printf("Password: ");
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fflush(stdout); |
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i = 0;
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for(;;) {
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c = getchar(); |
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if (c == '\n') |
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break;
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if (i < (buf_size - 1)) |
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buf[i++] = c; |
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} |
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buf[i] = '\0';
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return 0; |
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} |
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#else
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|
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#include <termios.h> |
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|
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static struct termios oldtty; |
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|
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static void term_exit(void) |
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{ |
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tcsetattr (0, TCSANOW, &oldtty);
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} |
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static void term_init(void) |
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{ |
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struct termios tty;
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|
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tcgetattr (0, &tty);
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oldtty = tty; |
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tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP |
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|INLCR|IGNCR|ICRNL|IXON); |
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tty.c_oflag |= OPOST; |
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tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); |
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tty.c_cflag &= ~(CSIZE|PARENB); |
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tty.c_cflag |= CS8; |
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tty.c_cc[VMIN] = 1;
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tty.c_cc[VTIME] = 0;
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tcsetattr (0, TCSANOW, &tty);
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atexit(term_exit); |
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} |
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static int read_password(char *buf, int buf_size) |
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{ |
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uint8_t ch; |
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int i, ret;
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printf("password: ");
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fflush(stdout); |
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term_init(); |
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i = 0;
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for(;;) {
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ret = read(0, &ch, 1); |
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if (ret == -1) { |
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if (errno == EAGAIN || errno == EINTR) {
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continue;
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} else {
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ret = -1;
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break;
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} |
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} else if (ret == 0) { |
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ret = -1;
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break;
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} else {
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if (ch == '\r') { |
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ret = 0;
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break;
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} |
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if (i < (buf_size - 1)) |
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buf[i++] = ch; |
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} |
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} |
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term_exit(); |
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buf[i] = '\0';
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printf("\n");
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return ret;
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} |
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#endif
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static BlockDriverState *bdrv_new_open(const char *filename, |
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const char *fmt) |
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{ |
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BlockDriverState *bs; |
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BlockDriver *drv; |
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char password[256]; |
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bs = bdrv_new("");
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if (!bs)
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error("Not enough memory");
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if (fmt) {
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drv = bdrv_find_format(fmt); |
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if (!drv)
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error("Unknown file format '%s'", fmt);
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} else {
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drv = NULL;
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} |
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if (bdrv_open2(bs, filename, BRDV_O_FLAGS, drv) < 0) { |
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error("Could not open '%s'", filename);
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} |
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if (bdrv_is_encrypted(bs)) {
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printf("Disk image '%s' is encrypted.\n", filename);
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if (read_password(password, sizeof(password)) < 0) |
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error("No password given");
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if (bdrv_set_key(bs, password) < 0) |
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error("invalid password");
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} |
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return bs;
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} |
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static int img_create(int argc, char **argv) |
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{ |
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int c, ret, flags;
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const char *fmt = "raw"; |
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const char *base_fmt = NULL; |
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const char *filename; |
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const char *base_filename = NULL; |
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uint64_t size; |
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double sizef;
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const char *p; |
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BlockDriver *drv; |
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flags = 0;
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for(;;) {
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c = getopt(argc, argv, "F:b:f:he6");
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if (c == -1) |
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break;
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switch(c) {
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case 'h': |
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help(); |
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break;
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case 'F': |
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base_fmt = optarg; |
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break;
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case 'b': |
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base_filename = optarg; |
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break;
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case 'f': |
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fmt = optarg; |
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break;
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case 'e': |
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flags |= BLOCK_FLAG_ENCRYPT; |
250 |
break;
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case '6': |
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flags |= BLOCK_FLAG_COMPAT6; |
253 |
break;
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} |
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} |
256 |
if (optind >= argc)
|
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help(); |
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filename = argv[optind++]; |
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size = 0;
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if (base_filename) {
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BlockDriverState *bs; |
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BlockDriver *base_drv = NULL;
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|
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if (base_fmt) {
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base_drv = bdrv_find_format(base_fmt); |
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if (base_drv == NULL) |
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error("Unknown basefile format '%s'", base_fmt);
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} |
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|
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bs = bdrv_new_open(base_filename, base_fmt); |
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bdrv_get_geometry(bs, &size); |
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size *= 512;
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bdrv_delete(bs); |
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} else {
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if (optind >= argc)
|
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help(); |
277 |
p = argv[optind]; |
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sizef = strtod(p, (char **)&p);
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if (*p == 'M') { |
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size = (uint64_t)(sizef * 1024 * 1024); |
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} else if (*p == 'G') { |
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size = (uint64_t)(sizef * 1024 * 1024 * 1024); |
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} else if (*p == 'k' || *p == 'K' || *p == '\0') { |
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size = (uint64_t)(sizef * 1024);
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} else {
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help(); |
287 |
} |
288 |
} |
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drv = bdrv_find_format(fmt); |
290 |
if (!drv)
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error("Unknown file format '%s'", fmt);
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printf("Formatting '%s', fmt=%s",
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filename, fmt); |
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if (flags & BLOCK_FLAG_ENCRYPT)
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printf(", encrypted");
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if (flags & BLOCK_FLAG_COMPAT6)
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printf(", compatibility level=6");
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if (base_filename) {
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printf(", backing_file=%s",
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base_filename); |
301 |
if (base_fmt)
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printf(", backing_fmt=%s",
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base_fmt); |
304 |
} |
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printf(", size=%" PRIu64 " kB\n", size / 1024); |
306 |
ret = bdrv_create2(drv, filename, size / 512, base_filename, base_fmt, flags);
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if (ret < 0) { |
308 |
if (ret == -ENOTSUP) {
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error("Formatting or formatting option not supported for file format '%s'", fmt);
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} else if (ret == -EFBIG) { |
311 |
error("The image size is too large for file format '%s'", fmt);
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} else {
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error("Error while formatting");
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} |
315 |
} |
316 |
return 0; |
317 |
} |
318 |
|
319 |
static int img_check(int argc, char **argv) |
320 |
{ |
321 |
int c, ret;
|
322 |
const char *filename, *fmt; |
323 |
BlockDriver *drv; |
324 |
BlockDriverState *bs; |
325 |
|
326 |
fmt = NULL;
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327 |
for(;;) {
|
328 |
c = getopt(argc, argv, "f:h");
|
329 |
if (c == -1) |
330 |
break;
|
331 |
switch(c) {
|
332 |
case 'h': |
333 |
help(); |
334 |
break;
|
335 |
case 'f': |
336 |
fmt = optarg; |
337 |
break;
|
338 |
} |
339 |
} |
340 |
if (optind >= argc)
|
341 |
help(); |
342 |
filename = argv[optind++]; |
343 |
|
344 |
bs = bdrv_new("");
|
345 |
if (!bs)
|
346 |
error("Not enough memory");
|
347 |
if (fmt) {
|
348 |
drv = bdrv_find_format(fmt); |
349 |
if (!drv)
|
350 |
error("Unknown file format '%s'", fmt);
|
351 |
} else {
|
352 |
drv = NULL;
|
353 |
} |
354 |
if (bdrv_open2(bs, filename, BRDV_O_FLAGS, drv) < 0) { |
355 |
error("Could not open '%s'", filename);
|
356 |
} |
357 |
ret = bdrv_check(bs); |
358 |
switch(ret) {
|
359 |
case 0: |
360 |
printf("No errors were found on the image.\n");
|
361 |
break;
|
362 |
case -ENOTSUP:
|
363 |
error("This image format does not support checks");
|
364 |
break;
|
365 |
default:
|
366 |
if (ret < 0) { |
367 |
error("An error occurred during the check");
|
368 |
} else {
|
369 |
printf("%d errors were found on the image.\n", ret);
|
370 |
} |
371 |
break;
|
372 |
} |
373 |
|
374 |
bdrv_delete(bs); |
375 |
return 0; |
376 |
} |
377 |
|
378 |
static int img_commit(int argc, char **argv) |
379 |
{ |
380 |
int c, ret;
|
381 |
const char *filename, *fmt; |
382 |
BlockDriver *drv; |
383 |
BlockDriverState *bs; |
384 |
|
385 |
fmt = NULL;
|
386 |
for(;;) {
|
387 |
c = getopt(argc, argv, "f:h");
|
388 |
if (c == -1) |
389 |
break;
|
390 |
switch(c) {
|
391 |
case 'h': |
392 |
help(); |
393 |
break;
|
394 |
case 'f': |
395 |
fmt = optarg; |
396 |
break;
|
397 |
} |
398 |
} |
399 |
if (optind >= argc)
|
400 |
help(); |
401 |
filename = argv[optind++]; |
402 |
|
403 |
bs = bdrv_new("");
|
404 |
if (!bs)
|
405 |
error("Not enough memory");
|
406 |
if (fmt) {
|
407 |
drv = bdrv_find_format(fmt); |
408 |
if (!drv)
|
409 |
error("Unknown file format '%s'", fmt);
|
410 |
} else {
|
411 |
drv = NULL;
|
412 |
} |
413 |
if (bdrv_open2(bs, filename, BRDV_O_FLAGS, drv) < 0) { |
414 |
error("Could not open '%s'", filename);
|
415 |
} |
416 |
ret = bdrv_commit(bs); |
417 |
switch(ret) {
|
418 |
case 0: |
419 |
printf("Image committed.\n");
|
420 |
break;
|
421 |
case -ENOENT:
|
422 |
error("No disk inserted");
|
423 |
break;
|
424 |
case -EACCES:
|
425 |
error("Image is read-only");
|
426 |
break;
|
427 |
case -ENOTSUP:
|
428 |
error("Image is already committed");
|
429 |
break;
|
430 |
default:
|
431 |
error("Error while committing image");
|
432 |
break;
|
433 |
} |
434 |
|
435 |
bdrv_delete(bs); |
436 |
return 0; |
437 |
} |
438 |
|
439 |
static int is_not_zero(const uint8_t *sector, int len) |
440 |
{ |
441 |
int i;
|
442 |
len >>= 2;
|
443 |
for(i = 0;i < len; i++) { |
444 |
if (((uint32_t *)sector)[i] != 0) |
445 |
return 1; |
446 |
} |
447 |
return 0; |
448 |
} |
449 |
|
450 |
/*
|
451 |
* Returns true iff the first sector pointed to by 'buf' contains at least
|
452 |
* a non-NUL byte.
|
453 |
*
|
454 |
* 'pnum' is set to the number of sectors (including and immediately following
|
455 |
* the first one) that are known to be in the same allocated/unallocated state.
|
456 |
*/
|
457 |
static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
458 |
{ |
459 |
int v, i;
|
460 |
|
461 |
if (n <= 0) { |
462 |
*pnum = 0;
|
463 |
return 0; |
464 |
} |
465 |
v = is_not_zero(buf, 512);
|
466 |
for(i = 1; i < n; i++) { |
467 |
buf += 512;
|
468 |
if (v != is_not_zero(buf, 512)) |
469 |
break;
|
470 |
} |
471 |
*pnum = i; |
472 |
return v;
|
473 |
} |
474 |
|
475 |
#define IO_BUF_SIZE 65536 |
476 |
|
477 |
static int img_convert(int argc, char **argv) |
478 |
{ |
479 |
int c, ret, n, n1, bs_n, bs_i, flags, cluster_size, cluster_sectors;
|
480 |
const char *fmt, *out_fmt, *out_baseimg, *out_filename; |
481 |
BlockDriver *drv; |
482 |
BlockDriverState **bs, *out_bs; |
483 |
int64_t total_sectors, nb_sectors, sector_num, bs_offset; |
484 |
uint64_t bs_sectors; |
485 |
uint8_t buf[IO_BUF_SIZE]; |
486 |
const uint8_t *buf1;
|
487 |
BlockDriverInfo bdi; |
488 |
|
489 |
fmt = NULL;
|
490 |
out_fmt = "raw";
|
491 |
out_baseimg = NULL;
|
492 |
flags = 0;
|
493 |
for(;;) {
|
494 |
c = getopt(argc, argv, "f:O:B:hce6");
|
495 |
if (c == -1) |
496 |
break;
|
497 |
switch(c) {
|
498 |
case 'h': |
499 |
help(); |
500 |
break;
|
501 |
case 'f': |
502 |
fmt = optarg; |
503 |
break;
|
504 |
case 'O': |
505 |
out_fmt = optarg; |
506 |
break;
|
507 |
case 'B': |
508 |
out_baseimg = optarg; |
509 |
break;
|
510 |
case 'c': |
511 |
flags |= BLOCK_FLAG_COMPRESS; |
512 |
break;
|
513 |
case 'e': |
514 |
flags |= BLOCK_FLAG_ENCRYPT; |
515 |
break;
|
516 |
case '6': |
517 |
flags |= BLOCK_FLAG_COMPAT6; |
518 |
break;
|
519 |
} |
520 |
} |
521 |
|
522 |
bs_n = argc - optind - 1;
|
523 |
if (bs_n < 1) help(); |
524 |
|
525 |
out_filename = argv[argc - 1];
|
526 |
|
527 |
if (bs_n > 1 && out_baseimg) |
528 |
error("-B makes no sense when concatenating multiple input images");
|
529 |
|
530 |
bs = calloc(bs_n, sizeof(BlockDriverState *));
|
531 |
if (!bs)
|
532 |
error("Out of memory");
|
533 |
|
534 |
total_sectors = 0;
|
535 |
for (bs_i = 0; bs_i < bs_n; bs_i++) { |
536 |
bs[bs_i] = bdrv_new_open(argv[optind + bs_i], fmt); |
537 |
if (!bs[bs_i])
|
538 |
error("Could not open '%s'", argv[optind + bs_i]);
|
539 |
bdrv_get_geometry(bs[bs_i], &bs_sectors); |
540 |
total_sectors += bs_sectors; |
541 |
} |
542 |
|
543 |
drv = bdrv_find_format(out_fmt); |
544 |
if (!drv)
|
545 |
error("Unknown file format '%s'", out_fmt);
|
546 |
if (flags & BLOCK_FLAG_COMPRESS && drv != &bdrv_qcow && drv != &bdrv_qcow2)
|
547 |
error("Compression not supported for this file format");
|
548 |
if (flags & BLOCK_FLAG_ENCRYPT && drv != &bdrv_qcow && drv != &bdrv_qcow2)
|
549 |
error("Encryption not supported for this file format");
|
550 |
if (flags & BLOCK_FLAG_COMPAT6 && drv != &bdrv_vmdk)
|
551 |
error("Alternative compatibility level not supported for this file format");
|
552 |
if (flags & BLOCK_FLAG_ENCRYPT && flags & BLOCK_FLAG_COMPRESS)
|
553 |
error("Compression and encryption not supported at the same time");
|
554 |
|
555 |
ret = bdrv_create(drv, out_filename, total_sectors, out_baseimg, flags); |
556 |
if (ret < 0) { |
557 |
if (ret == -ENOTSUP) {
|
558 |
error("Formatting not supported for file format '%s'", out_fmt);
|
559 |
} else if (ret == -EFBIG) { |
560 |
error("The image size is too large for file format '%s'", out_fmt);
|
561 |
} else {
|
562 |
error("Error while formatting '%s'", out_filename);
|
563 |
} |
564 |
} |
565 |
|
566 |
out_bs = bdrv_new_open(out_filename, out_fmt); |
567 |
|
568 |
bs_i = 0;
|
569 |
bs_offset = 0;
|
570 |
bdrv_get_geometry(bs[0], &bs_sectors);
|
571 |
|
572 |
if (flags & BLOCK_FLAG_COMPRESS) {
|
573 |
if (bdrv_get_info(out_bs, &bdi) < 0) |
574 |
error("could not get block driver info");
|
575 |
cluster_size = bdi.cluster_size; |
576 |
if (cluster_size <= 0 || cluster_size > IO_BUF_SIZE) |
577 |
error("invalid cluster size");
|
578 |
cluster_sectors = cluster_size >> 9;
|
579 |
sector_num = 0;
|
580 |
for(;;) {
|
581 |
int64_t bs_num; |
582 |
int remainder;
|
583 |
uint8_t *buf2; |
584 |
|
585 |
nb_sectors = total_sectors - sector_num; |
586 |
if (nb_sectors <= 0) |
587 |
break;
|
588 |
if (nb_sectors >= cluster_sectors)
|
589 |
n = cluster_sectors; |
590 |
else
|
591 |
n = nb_sectors; |
592 |
|
593 |
bs_num = sector_num - bs_offset; |
594 |
assert (bs_num >= 0);
|
595 |
remainder = n; |
596 |
buf2 = buf; |
597 |
while (remainder > 0) { |
598 |
int nlow;
|
599 |
while (bs_num == bs_sectors) {
|
600 |
bs_i++; |
601 |
assert (bs_i < bs_n); |
602 |
bs_offset += bs_sectors; |
603 |
bdrv_get_geometry(bs[bs_i], &bs_sectors); |
604 |
bs_num = 0;
|
605 |
/* printf("changing part: sector_num=%lld, "
|
606 |
"bs_i=%d, bs_offset=%lld, bs_sectors=%lld\n",
|
607 |
sector_num, bs_i, bs_offset, bs_sectors); */
|
608 |
} |
609 |
assert (bs_num < bs_sectors); |
610 |
|
611 |
nlow = (remainder > bs_sectors - bs_num) ? bs_sectors - bs_num : remainder; |
612 |
|
613 |
if (bdrv_read(bs[bs_i], bs_num, buf2, nlow) < 0) |
614 |
error("error while reading");
|
615 |
|
616 |
buf2 += nlow * 512;
|
617 |
bs_num += nlow; |
618 |
|
619 |
remainder -= nlow; |
620 |
} |
621 |
assert (remainder == 0);
|
622 |
|
623 |
if (n < cluster_sectors)
|
624 |
memset(buf + n * 512, 0, cluster_size - n * 512); |
625 |
if (is_not_zero(buf, cluster_size)) {
|
626 |
if (bdrv_write_compressed(out_bs, sector_num, buf,
|
627 |
cluster_sectors) != 0)
|
628 |
error("error while compressing sector %" PRId64,
|
629 |
sector_num); |
630 |
} |
631 |
sector_num += n; |
632 |
} |
633 |
/* signal EOF to align */
|
634 |
bdrv_write_compressed(out_bs, 0, NULL, 0); |
635 |
} else {
|
636 |
sector_num = 0; // total number of sectors converted so far |
637 |
for(;;) {
|
638 |
nb_sectors = total_sectors - sector_num; |
639 |
if (nb_sectors <= 0) |
640 |
break;
|
641 |
if (nb_sectors >= (IO_BUF_SIZE / 512)) |
642 |
n = (IO_BUF_SIZE / 512);
|
643 |
else
|
644 |
n = nb_sectors; |
645 |
|
646 |
while (sector_num - bs_offset >= bs_sectors) {
|
647 |
bs_i ++; |
648 |
assert (bs_i < bs_n); |
649 |
bs_offset += bs_sectors; |
650 |
bdrv_get_geometry(bs[bs_i], &bs_sectors); |
651 |
/* printf("changing part: sector_num=%lld, bs_i=%d, "
|
652 |
"bs_offset=%lld, bs_sectors=%lld\n",
|
653 |
sector_num, bs_i, bs_offset, bs_sectors); */
|
654 |
} |
655 |
|
656 |
if (n > bs_offset + bs_sectors - sector_num)
|
657 |
n = bs_offset + bs_sectors - sector_num; |
658 |
|
659 |
if (drv != &bdrv_host_device) {
|
660 |
if (!bdrv_is_allocated(bs[bs_i], sector_num - bs_offset,
|
661 |
n, &n1)) { |
662 |
sector_num += n1; |
663 |
continue;
|
664 |
} |
665 |
/* The next 'n1' sectors are allocated in the input image. Copy
|
666 |
only those as they may be followed by unallocated sectors. */
|
667 |
n = n1; |
668 |
} else {
|
669 |
n1 = n; |
670 |
} |
671 |
|
672 |
if (bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n) < 0) |
673 |
error("error while reading");
|
674 |
/* NOTE: at the same time we convert, we do not write zero
|
675 |
sectors to have a chance to compress the image. Ideally, we
|
676 |
should add a specific call to have the info to go faster */
|
677 |
buf1 = buf; |
678 |
while (n > 0) { |
679 |
/* If the output image is being created as a copy on write image,
|
680 |
copy all sectors even the ones containing only NUL bytes,
|
681 |
because they may differ from the sectors in the base image.
|
682 |
|
683 |
If the output is to a host device, we also write out
|
684 |
sectors that are entirely 0, since whatever data was
|
685 |
already there is garbage, not 0s. */
|
686 |
if (drv == &bdrv_host_device || out_baseimg ||
|
687 |
is_allocated_sectors(buf1, n, &n1)) { |
688 |
if (bdrv_write(out_bs, sector_num, buf1, n1) < 0) |
689 |
error("error while writing");
|
690 |
} |
691 |
sector_num += n1; |
692 |
n -= n1; |
693 |
buf1 += n1 * 512;
|
694 |
} |
695 |
} |
696 |
} |
697 |
bdrv_delete(out_bs); |
698 |
for (bs_i = 0; bs_i < bs_n; bs_i++) |
699 |
bdrv_delete(bs[bs_i]); |
700 |
free(bs); |
701 |
return 0; |
702 |
} |
703 |
|
704 |
#ifdef _WIN32
|
705 |
static int64_t get_allocated_file_size(const char *filename) |
706 |
{ |
707 |
typedef DWORD (WINAPI * get_compressed_t)(const char *filename, DWORD *high); |
708 |
get_compressed_t get_compressed; |
709 |
struct _stati64 st;
|
710 |
|
711 |
/* WinNT support GetCompressedFileSize to determine allocate size */
|
712 |
get_compressed = (get_compressed_t) GetProcAddress(GetModuleHandle("kernel32"), "GetCompressedFileSizeA"); |
713 |
if (get_compressed) {
|
714 |
DWORD high, low; |
715 |
low = get_compressed(filename, &high); |
716 |
if (low != 0xFFFFFFFFlu || GetLastError() == NO_ERROR) |
717 |
return (((int64_t) high) << 32) + low; |
718 |
} |
719 |
|
720 |
if (_stati64(filename, &st) < 0) |
721 |
return -1; |
722 |
return st.st_size;
|
723 |
} |
724 |
#else
|
725 |
static int64_t get_allocated_file_size(const char *filename) |
726 |
{ |
727 |
struct stat st;
|
728 |
if (stat(filename, &st) < 0) |
729 |
return -1; |
730 |
return (int64_t)st.st_blocks * 512; |
731 |
} |
732 |
#endif
|
733 |
|
734 |
static void dump_snapshots(BlockDriverState *bs) |
735 |
{ |
736 |
QEMUSnapshotInfo *sn_tab, *sn; |
737 |
int nb_sns, i;
|
738 |
char buf[256]; |
739 |
|
740 |
nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
741 |
if (nb_sns <= 0) |
742 |
return;
|
743 |
printf("Snapshot list:\n");
|
744 |
printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); |
745 |
for(i = 0; i < nb_sns; i++) { |
746 |
sn = &sn_tab[i]; |
747 |
printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
748 |
} |
749 |
qemu_free(sn_tab); |
750 |
} |
751 |
|
752 |
static int img_info(int argc, char **argv) |
753 |
{ |
754 |
int c;
|
755 |
const char *filename, *fmt; |
756 |
BlockDriver *drv; |
757 |
BlockDriverState *bs; |
758 |
char fmt_name[128], size_buf[128], dsize_buf[128]; |
759 |
uint64_t total_sectors; |
760 |
int64_t allocated_size; |
761 |
char backing_filename[1024]; |
762 |
char backing_filename2[1024]; |
763 |
BlockDriverInfo bdi; |
764 |
|
765 |
fmt = NULL;
|
766 |
for(;;) {
|
767 |
c = getopt(argc, argv, "f:h");
|
768 |
if (c == -1) |
769 |
break;
|
770 |
switch(c) {
|
771 |
case 'h': |
772 |
help(); |
773 |
break;
|
774 |
case 'f': |
775 |
fmt = optarg; |
776 |
break;
|
777 |
} |
778 |
} |
779 |
if (optind >= argc)
|
780 |
help(); |
781 |
filename = argv[optind++]; |
782 |
|
783 |
bs = bdrv_new("");
|
784 |
if (!bs)
|
785 |
error("Not enough memory");
|
786 |
if (fmt) {
|
787 |
drv = bdrv_find_format(fmt); |
788 |
if (!drv)
|
789 |
error("Unknown file format '%s'", fmt);
|
790 |
} else {
|
791 |
drv = NULL;
|
792 |
} |
793 |
if (bdrv_open2(bs, filename, BRDV_O_FLAGS, drv) < 0) { |
794 |
error("Could not open '%s'", filename);
|
795 |
} |
796 |
bdrv_get_format(bs, fmt_name, sizeof(fmt_name));
|
797 |
bdrv_get_geometry(bs, &total_sectors); |
798 |
get_human_readable_size(size_buf, sizeof(size_buf), total_sectors * 512); |
799 |
allocated_size = get_allocated_file_size(filename); |
800 |
if (allocated_size < 0) |
801 |
snprintf(dsize_buf, sizeof(dsize_buf), "unavailable"); |
802 |
else
|
803 |
get_human_readable_size(dsize_buf, sizeof(dsize_buf),
|
804 |
allocated_size); |
805 |
printf("image: %s\n"
|
806 |
"file format: %s\n"
|
807 |
"virtual size: %s (%" PRId64 " bytes)\n" |
808 |
"disk size: %s\n",
|
809 |
filename, fmt_name, size_buf, |
810 |
(total_sectors * 512),
|
811 |
dsize_buf); |
812 |
if (bdrv_is_encrypted(bs))
|
813 |
printf("encrypted: yes\n");
|
814 |
if (bdrv_get_info(bs, &bdi) >= 0) { |
815 |
if (bdi.cluster_size != 0) |
816 |
printf("cluster_size: %d\n", bdi.cluster_size);
|
817 |
} |
818 |
bdrv_get_backing_filename(bs, backing_filename, sizeof(backing_filename));
|
819 |
if (backing_filename[0] != '\0') { |
820 |
path_combine(backing_filename2, sizeof(backing_filename2),
|
821 |
filename, backing_filename); |
822 |
printf("backing file: %s (actual path: %s)\n",
|
823 |
backing_filename, |
824 |
backing_filename2); |
825 |
} |
826 |
dump_snapshots(bs); |
827 |
bdrv_delete(bs); |
828 |
return 0; |
829 |
} |
830 |
|
831 |
#define SNAPSHOT_LIST 1 |
832 |
#define SNAPSHOT_CREATE 2 |
833 |
#define SNAPSHOT_APPLY 3 |
834 |
#define SNAPSHOT_DELETE 4 |
835 |
|
836 |
static void img_snapshot(int argc, char **argv) |
837 |
{ |
838 |
BlockDriverState *bs; |
839 |
QEMUSnapshotInfo sn; |
840 |
char *filename, *snapshot_name = NULL; |
841 |
int c, ret;
|
842 |
int action = 0; |
843 |
qemu_timeval tv; |
844 |
|
845 |
/* Parse commandline parameters */
|
846 |
for(;;) {
|
847 |
c = getopt(argc, argv, "la:c:d:h");
|
848 |
if (c == -1) |
849 |
break;
|
850 |
switch(c) {
|
851 |
case 'h': |
852 |
help(); |
853 |
return;
|
854 |
case 'l': |
855 |
if (action) {
|
856 |
help(); |
857 |
return;
|
858 |
} |
859 |
action = SNAPSHOT_LIST; |
860 |
break;
|
861 |
case 'a': |
862 |
if (action) {
|
863 |
help(); |
864 |
return;
|
865 |
} |
866 |
action = SNAPSHOT_APPLY; |
867 |
snapshot_name = optarg; |
868 |
break;
|
869 |
case 'c': |
870 |
if (action) {
|
871 |
help(); |
872 |
return;
|
873 |
} |
874 |
action = SNAPSHOT_CREATE; |
875 |
snapshot_name = optarg; |
876 |
break;
|
877 |
case 'd': |
878 |
if (action) {
|
879 |
help(); |
880 |
return;
|
881 |
} |
882 |
action = SNAPSHOT_DELETE; |
883 |
snapshot_name = optarg; |
884 |
break;
|
885 |
} |
886 |
} |
887 |
|
888 |
if (optind >= argc)
|
889 |
help(); |
890 |
filename = argv[optind++]; |
891 |
|
892 |
/* Open the image */
|
893 |
bs = bdrv_new("");
|
894 |
if (!bs)
|
895 |
error("Not enough memory");
|
896 |
|
897 |
if (bdrv_open2(bs, filename, 0, NULL) < 0) { |
898 |
error("Could not open '%s'", filename);
|
899 |
} |
900 |
|
901 |
/* Perform the requested action */
|
902 |
switch(action) {
|
903 |
case SNAPSHOT_LIST:
|
904 |
dump_snapshots(bs); |
905 |
break;
|
906 |
|
907 |
case SNAPSHOT_CREATE:
|
908 |
memset(&sn, 0, sizeof(sn)); |
909 |
pstrcpy(sn.name, sizeof(sn.name), snapshot_name);
|
910 |
|
911 |
qemu_gettimeofday(&tv); |
912 |
sn.date_sec = tv.tv_sec; |
913 |
sn.date_nsec = tv.tv_usec * 1000;
|
914 |
|
915 |
ret = bdrv_snapshot_create(bs, &sn); |
916 |
if (ret)
|
917 |
error("Could not create snapshot '%s': %d (%s)",
|
918 |
snapshot_name, ret, strerror(-ret)); |
919 |
break;
|
920 |
|
921 |
case SNAPSHOT_APPLY:
|
922 |
ret = bdrv_snapshot_goto(bs, snapshot_name); |
923 |
if (ret)
|
924 |
error("Could not apply snapshot '%s': %d (%s)",
|
925 |
snapshot_name, ret, strerror(-ret)); |
926 |
break;
|
927 |
|
928 |
case SNAPSHOT_DELETE:
|
929 |
ret = bdrv_snapshot_delete(bs, snapshot_name); |
930 |
if (ret)
|
931 |
error("Could not delete snapshot '%s': %d (%s)",
|
932 |
snapshot_name, ret, strerror(-ret)); |
933 |
break;
|
934 |
} |
935 |
|
936 |
/* Cleanup */
|
937 |
bdrv_delete(bs); |
938 |
} |
939 |
|
940 |
int main(int argc, char **argv) |
941 |
{ |
942 |
const char *cmd; |
943 |
|
944 |
bdrv_init(); |
945 |
if (argc < 2) |
946 |
help(); |
947 |
cmd = argv[1];
|
948 |
argc--; argv++; |
949 |
if (!strcmp(cmd, "create")) { |
950 |
img_create(argc, argv); |
951 |
} else if (!strcmp(cmd, "check")) { |
952 |
img_check(argc, argv); |
953 |
} else if (!strcmp(cmd, "commit")) { |
954 |
img_commit(argc, argv); |
955 |
} else if (!strcmp(cmd, "convert")) { |
956 |
img_convert(argc, argv); |
957 |
} else if (!strcmp(cmd, "info")) { |
958 |
img_info(argc, argv); |
959 |
} else if (!strcmp(cmd, "snapshot")) { |
960 |
img_snapshot(argc, argv); |
961 |
} else {
|
962 |
help(); |
963 |
} |
964 |
return 0; |
965 |
} |