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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 "qapi-visit.h" |
25 |
#include "qapi/qmp-output-visitor.h" |
26 |
#include "qapi/qmp/qjson.h" |
27 |
#include "qemu-common.h" |
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#include "qemu/option.h" |
29 |
#include "qemu/error-report.h" |
30 |
#include "qemu/osdep.h" |
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#include "sysemu/sysemu.h" |
32 |
#include "block/block_int.h" |
33 |
#include "block/qapi.h" |
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#include <getopt.h> |
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#include <stdio.h> |
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#include <stdarg.h> |
37 |
|
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#ifdef _WIN32
|
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#include <windows.h> |
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#endif
|
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|
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typedef struct img_cmd_t { |
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const char *name; |
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int (*handler)(int argc, char **argv); |
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} img_cmd_t; |
46 |
|
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enum {
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OPTION_OUTPUT = 256,
|
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OPTION_BACKING_CHAIN = 257,
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}; |
51 |
|
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typedef enum OutputFormat { |
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OFORMAT_JSON, |
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OFORMAT_HUMAN, |
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} OutputFormat; |
56 |
|
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/* Default to cache=writeback as data integrity is not important for qemu-tcg. */
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#define BDRV_O_FLAGS BDRV_O_CACHE_WB
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#define BDRV_DEFAULT_CACHE "writeback" |
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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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} |
65 |
|
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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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const char *help_msg = |
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"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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#define DEF(option, callback, arg_string) \
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" " arg_string "\n" |
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#include "qemu-img-cmds.h" |
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#undef DEF
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#undef GEN_DOCS
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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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" 'fmt' is the disk image format. It is guessed automatically in most cases\n"
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" 'cache' is the cache mode used to write the output disk image, the valid\n"
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" options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n"
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" 'directsync' and 'unsafe' (default for convert)\n"
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" 'size' is the disk image size in bytes. Optional suffixes\n"
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" 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n"
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" 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n"
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" supported. 'b' 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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" 'options' is a comma separated list of format specific options in a\n"
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" name=value format. Use -o ? for an overview of the options supported by the\n"
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" used format\n"
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" '-c' indicates that target image must be compressed (qcow format only)\n"
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" '-u' enables unsafe rebasing. It is assumed that old and new backing file\n"
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" match exactly. The image doesn't need a working backing file before\n"
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" rebasing in this case (useful for renaming the backing file)\n"
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" '-h' with or without a command shows this help and lists the supported formats\n"
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" '-p' show progress of command (only certain commands)\n"
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" '-q' use Quiet mode - do not print any output (except errors)\n"
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" '-S' indicates the consecutive number of bytes (defaults to 4k) that must\n"
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" contain only zeros for qemu-img to create a sparse image during\n"
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" conversion. If the number of bytes is 0, the source will not be scanned for\n"
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" unallocated or zero sectors, and the destination image will always be\n"
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" fully allocated\n"
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" images will always be fully allocated\n"
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" '--output' takes the format in which the output must be done (human or json)\n"
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" '-n' skips the target volume creation (useful if the volume is created\n"
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" prior to running qemu-img)\n"
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"\n"
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"Parameters to check subcommand:\n"
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" '-r' tries to repair any inconsistencies that are found during the check.\n"
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" '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n"
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" kinds of errors, with a higher risk of choosing the wrong fix or\n"
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" hiding corruption that has already occurred.\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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"\n"
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"Parameters to compare subcommand:\n"
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" '-f' first image format\n"
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" '-F' second image format\n"
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" '-s' run in Strict mode - fail on different image size or sector allocation\n";
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printf("%s\nSupported formats:", help_msg);
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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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} |
136 |
|
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static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...) |
138 |
{ |
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int ret = 0; |
140 |
if (!quiet) {
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va_list args; |
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va_start(args, fmt); |
143 |
ret = vprintf(fmt, args); |
144 |
va_end(args); |
145 |
} |
146 |
return ret;
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} |
148 |
|
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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) |
152 |
{ |
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int c, i;
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printf("Password: ");
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fflush(stdout); |
156 |
i = 0;
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for(;;) {
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c = getchar(); |
159 |
if (c == '\n') |
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break;
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if (i < (buf_size - 1)) |
162 |
buf[i++] = c; |
163 |
} |
164 |
buf[i] = '\0';
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return 0; |
166 |
} |
167 |
|
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#else
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|
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#include <termios.h> |
171 |
|
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static struct termios oldtty; |
173 |
|
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static void term_exit(void) |
175 |
{ |
176 |
tcsetattr (0, TCSANOW, &oldtty);
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} |
178 |
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static void term_init(void) |
180 |
{ |
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struct termios tty;
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|
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tcgetattr (0, &tty);
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oldtty = tty; |
185 |
|
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tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP |
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|INLCR|IGNCR|ICRNL|IXON); |
188 |
tty.c_oflag |= OPOST; |
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tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); |
190 |
tty.c_cflag &= ~(CSIZE|PARENB); |
191 |
tty.c_cflag |= CS8; |
192 |
tty.c_cc[VMIN] = 1;
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tty.c_cc[VTIME] = 0;
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|
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tcsetattr (0, TCSANOW, &tty);
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196 |
|
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atexit(term_exit); |
198 |
} |
199 |
|
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static int read_password(char *buf, int buf_size) |
201 |
{ |
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uint8_t ch; |
203 |
int i, ret;
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|
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printf("password: ");
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fflush(stdout); |
207 |
term_init(); |
208 |
i = 0;
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for(;;) {
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ret = read(0, &ch, 1); |
211 |
if (ret == -1) { |
212 |
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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} |
218 |
} else if (ret == 0) { |
219 |
ret = -1;
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break;
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} else {
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if (ch == '\r') { |
223 |
ret = 0;
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break;
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} |
226 |
if (i < (buf_size - 1)) |
227 |
buf[i++] = ch; |
228 |
} |
229 |
} |
230 |
term_exit(); |
231 |
buf[i] = '\0';
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printf("\n");
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return ret;
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} |
235 |
#endif
|
236 |
|
237 |
static int print_block_option_help(const char *filename, const char *fmt) |
238 |
{ |
239 |
BlockDriver *drv, *proto_drv; |
240 |
QEMUOptionParameter *create_options = NULL;
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|
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/* Find driver and parse its options */
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drv = bdrv_find_format(fmt); |
244 |
if (!drv) {
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error_report("Unknown file format '%s'", fmt);
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return 1; |
247 |
} |
248 |
|
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proto_drv = bdrv_find_protocol(filename, true);
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if (!proto_drv) {
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error_report("Unknown protocol '%s'", filename);
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return 1; |
253 |
} |
254 |
|
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create_options = append_option_parameters(create_options, |
256 |
drv->create_options); |
257 |
create_options = append_option_parameters(create_options, |
258 |
proto_drv->create_options); |
259 |
print_option_help(create_options); |
260 |
free_option_parameters(create_options); |
261 |
return 0; |
262 |
} |
263 |
|
264 |
static BlockDriverState *bdrv_new_open(const char *filename, |
265 |
const char *fmt, |
266 |
int flags,
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bool require_io,
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bool quiet)
|
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{ |
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BlockDriverState *bs; |
271 |
BlockDriver *drv; |
272 |
char password[256]; |
273 |
Error *local_err = NULL;
|
274 |
int ret;
|
275 |
|
276 |
bs = bdrv_new("image");
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277 |
|
278 |
if (fmt) {
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279 |
drv = bdrv_find_format(fmt); |
280 |
if (!drv) {
|
281 |
error_report("Unknown file format '%s'", fmt);
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282 |
goto fail;
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283 |
} |
284 |
} else {
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285 |
drv = NULL;
|
286 |
} |
287 |
|
288 |
ret = bdrv_open(bs, filename, NULL, flags, drv, &local_err);
|
289 |
if (ret < 0) { |
290 |
error_report("Could not open '%s': %s", filename,
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291 |
error_get_pretty(local_err)); |
292 |
error_free(local_err); |
293 |
goto fail;
|
294 |
} |
295 |
|
296 |
if (bdrv_is_encrypted(bs) && require_io) {
|
297 |
qprintf(quiet, "Disk image '%s' is encrypted.\n", filename);
|
298 |
if (read_password(password, sizeof(password)) < 0) { |
299 |
error_report("No password given");
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300 |
goto fail;
|
301 |
} |
302 |
if (bdrv_set_key(bs, password) < 0) { |
303 |
error_report("invalid password");
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304 |
goto fail;
|
305 |
} |
306 |
} |
307 |
return bs;
|
308 |
fail:
|
309 |
if (bs) {
|
310 |
bdrv_unref(bs); |
311 |
} |
312 |
return NULL; |
313 |
} |
314 |
|
315 |
static int add_old_style_options(const char *fmt, QEMUOptionParameter *list, |
316 |
const char *base_filename, |
317 |
const char *base_fmt) |
318 |
{ |
319 |
if (base_filename) {
|
320 |
if (set_option_parameter(list, BLOCK_OPT_BACKING_FILE, base_filename)) {
|
321 |
error_report("Backing file not supported for file format '%s'",
|
322 |
fmt); |
323 |
return -1; |
324 |
} |
325 |
} |
326 |
if (base_fmt) {
|
327 |
if (set_option_parameter(list, BLOCK_OPT_BACKING_FMT, base_fmt)) {
|
328 |
error_report("Backing file format not supported for file "
|
329 |
"format '%s'", fmt);
|
330 |
return -1; |
331 |
} |
332 |
} |
333 |
return 0; |
334 |
} |
335 |
|
336 |
static int img_create(int argc, char **argv) |
337 |
{ |
338 |
int c;
|
339 |
uint64_t img_size = -1;
|
340 |
const char *fmt = "raw"; |
341 |
const char *base_fmt = NULL; |
342 |
const char *filename; |
343 |
const char *base_filename = NULL; |
344 |
char *options = NULL; |
345 |
Error *local_err = NULL;
|
346 |
bool quiet = false; |
347 |
|
348 |
for(;;) {
|
349 |
c = getopt(argc, argv, "F:b:f:he6o:q");
|
350 |
if (c == -1) { |
351 |
break;
|
352 |
} |
353 |
switch(c) {
|
354 |
case '?': |
355 |
case 'h': |
356 |
help(); |
357 |
break;
|
358 |
case 'F': |
359 |
base_fmt = optarg; |
360 |
break;
|
361 |
case 'b': |
362 |
base_filename = optarg; |
363 |
break;
|
364 |
case 'f': |
365 |
fmt = optarg; |
366 |
break;
|
367 |
case 'e': |
368 |
error_report("option -e is deprecated, please use \'-o "
|
369 |
"encryption\' instead!");
|
370 |
return 1; |
371 |
case '6': |
372 |
error_report("option -6 is deprecated, please use \'-o "
|
373 |
"compat6\' instead!");
|
374 |
return 1; |
375 |
case 'o': |
376 |
options = optarg; |
377 |
break;
|
378 |
case 'q': |
379 |
quiet = true;
|
380 |
break;
|
381 |
} |
382 |
} |
383 |
|
384 |
/* Get the filename */
|
385 |
if (optind >= argc) {
|
386 |
help(); |
387 |
} |
388 |
filename = argv[optind++]; |
389 |
|
390 |
/* Get image size, if specified */
|
391 |
if (optind < argc) {
|
392 |
int64_t sval; |
393 |
char *end;
|
394 |
sval = strtosz_suffix(argv[optind++], &end, STRTOSZ_DEFSUFFIX_B); |
395 |
if (sval < 0 || *end) { |
396 |
if (sval == -ERANGE) {
|
397 |
error_report("Image size must be less than 8 EiB!");
|
398 |
} else {
|
399 |
error_report("Invalid image size specified! You may use k, M, "
|
400 |
"G, T, P or E suffixes for ");
|
401 |
error_report("kilobytes, megabytes, gigabytes, terabytes, "
|
402 |
"petabytes and exabytes.");
|
403 |
} |
404 |
return 1; |
405 |
} |
406 |
img_size = (uint64_t)sval; |
407 |
} |
408 |
if (optind != argc) {
|
409 |
help(); |
410 |
} |
411 |
|
412 |
if (options && is_help_option(options)) {
|
413 |
return print_block_option_help(filename, fmt);
|
414 |
} |
415 |
|
416 |
bdrv_img_create(filename, fmt, base_filename, base_fmt, |
417 |
options, img_size, BDRV_O_FLAGS, &local_err, quiet); |
418 |
if (error_is_set(&local_err)) {
|
419 |
error_report("%s: %s", filename, error_get_pretty(local_err));
|
420 |
error_free(local_err); |
421 |
return 1; |
422 |
} |
423 |
|
424 |
return 0; |
425 |
} |
426 |
|
427 |
static void dump_json_image_check(ImageCheck *check, bool quiet) |
428 |
{ |
429 |
Error *errp = NULL;
|
430 |
QString *str; |
431 |
QmpOutputVisitor *ov = qmp_output_visitor_new(); |
432 |
QObject *obj; |
433 |
visit_type_ImageCheck(qmp_output_get_visitor(ov), |
434 |
&check, NULL, &errp);
|
435 |
obj = qmp_output_get_qobject(ov); |
436 |
str = qobject_to_json_pretty(obj); |
437 |
assert(str != NULL);
|
438 |
qprintf(quiet, "%s\n", qstring_get_str(str));
|
439 |
qobject_decref(obj); |
440 |
qmp_output_visitor_cleanup(ov); |
441 |
QDECREF(str); |
442 |
} |
443 |
|
444 |
static void dump_human_image_check(ImageCheck *check, bool quiet) |
445 |
{ |
446 |
if (!(check->corruptions || check->leaks || check->check_errors)) {
|
447 |
qprintf(quiet, "No errors were found on the image.\n");
|
448 |
} else {
|
449 |
if (check->corruptions) {
|
450 |
qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" |
451 |
"Data may be corrupted, or further writes to the image "
|
452 |
"may corrupt it.\n",
|
453 |
check->corruptions); |
454 |
} |
455 |
|
456 |
if (check->leaks) {
|
457 |
qprintf(quiet, |
458 |
"\n%" PRId64 " leaked clusters were found on the image.\n" |
459 |
"This means waste of disk space, but no harm to data.\n",
|
460 |
check->leaks); |
461 |
} |
462 |
|
463 |
if (check->check_errors) {
|
464 |
qprintf(quiet, |
465 |
"\n%" PRId64
|
466 |
" internal errors have occurred during the check.\n",
|
467 |
check->check_errors); |
468 |
} |
469 |
} |
470 |
|
471 |
if (check->total_clusters != 0 && check->allocated_clusters != 0) { |
472 |
qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
473 |
"%0.2f%% fragmented, %0.2f%% compressed clusters\n",
|
474 |
check->allocated_clusters, check->total_clusters, |
475 |
check->allocated_clusters * 100.0 / check->total_clusters, |
476 |
check->fragmented_clusters * 100.0 / check->allocated_clusters, |
477 |
check->compressed_clusters * 100.0 / |
478 |
check->allocated_clusters); |
479 |
} |
480 |
|
481 |
if (check->image_end_offset) {
|
482 |
qprintf(quiet, |
483 |
"Image end offset: %" PRId64 "\n", check->image_end_offset); |
484 |
} |
485 |
} |
486 |
|
487 |
static int collect_image_check(BlockDriverState *bs, |
488 |
ImageCheck *check, |
489 |
const char *filename, |
490 |
const char *fmt, |
491 |
int fix)
|
492 |
{ |
493 |
int ret;
|
494 |
BdrvCheckResult result; |
495 |
|
496 |
ret = bdrv_check(bs, &result, fix); |
497 |
if (ret < 0) { |
498 |
return ret;
|
499 |
} |
500 |
|
501 |
check->filename = g_strdup(filename); |
502 |
check->format = g_strdup(bdrv_get_format_name(bs)); |
503 |
check->check_errors = result.check_errors; |
504 |
check->corruptions = result.corruptions; |
505 |
check->has_corruptions = result.corruptions != 0;
|
506 |
check->leaks = result.leaks; |
507 |
check->has_leaks = result.leaks != 0;
|
508 |
check->corruptions_fixed = result.corruptions_fixed; |
509 |
check->has_corruptions_fixed = result.corruptions != 0;
|
510 |
check->leaks_fixed = result.leaks_fixed; |
511 |
check->has_leaks_fixed = result.leaks != 0;
|
512 |
check->image_end_offset = result.image_end_offset; |
513 |
check->has_image_end_offset = result.image_end_offset != 0;
|
514 |
check->total_clusters = result.bfi.total_clusters; |
515 |
check->has_total_clusters = result.bfi.total_clusters != 0;
|
516 |
check->allocated_clusters = result.bfi.allocated_clusters; |
517 |
check->has_allocated_clusters = result.bfi.allocated_clusters != 0;
|
518 |
check->fragmented_clusters = result.bfi.fragmented_clusters; |
519 |
check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0;
|
520 |
check->compressed_clusters = result.bfi.compressed_clusters; |
521 |
check->has_compressed_clusters = result.bfi.compressed_clusters != 0;
|
522 |
|
523 |
return 0; |
524 |
} |
525 |
|
526 |
/*
|
527 |
* Checks an image for consistency. Exit codes:
|
528 |
*
|
529 |
* 0 - Check completed, image is good
|
530 |
* 1 - Check not completed because of internal errors
|
531 |
* 2 - Check completed, image is corrupted
|
532 |
* 3 - Check completed, image has leaked clusters, but is good otherwise
|
533 |
*/
|
534 |
static int img_check(int argc, char **argv) |
535 |
{ |
536 |
int c, ret;
|
537 |
OutputFormat output_format = OFORMAT_HUMAN; |
538 |
const char *filename, *fmt, *output; |
539 |
BlockDriverState *bs; |
540 |
int fix = 0; |
541 |
int flags = BDRV_O_FLAGS | BDRV_O_CHECK;
|
542 |
ImageCheck *check; |
543 |
bool quiet = false; |
544 |
|
545 |
fmt = NULL;
|
546 |
output = NULL;
|
547 |
for(;;) {
|
548 |
int option_index = 0; |
549 |
static const struct option long_options[] = { |
550 |
{"help", no_argument, 0, 'h'}, |
551 |
{"format", required_argument, 0, 'f'}, |
552 |
{"repair", no_argument, 0, 'r'}, |
553 |
{"output", required_argument, 0, OPTION_OUTPUT}, |
554 |
{0, 0, 0, 0} |
555 |
}; |
556 |
c = getopt_long(argc, argv, "f:hr:q",
|
557 |
long_options, &option_index); |
558 |
if (c == -1) { |
559 |
break;
|
560 |
} |
561 |
switch(c) {
|
562 |
case '?': |
563 |
case 'h': |
564 |
help(); |
565 |
break;
|
566 |
case 'f': |
567 |
fmt = optarg; |
568 |
break;
|
569 |
case 'r': |
570 |
flags |= BDRV_O_RDWR; |
571 |
|
572 |
if (!strcmp(optarg, "leaks")) { |
573 |
fix = BDRV_FIX_LEAKS; |
574 |
} else if (!strcmp(optarg, "all")) { |
575 |
fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; |
576 |
} else {
|
577 |
help(); |
578 |
} |
579 |
break;
|
580 |
case OPTION_OUTPUT:
|
581 |
output = optarg; |
582 |
break;
|
583 |
case 'q': |
584 |
quiet = true;
|
585 |
break;
|
586 |
} |
587 |
} |
588 |
if (optind != argc - 1) { |
589 |
help(); |
590 |
} |
591 |
filename = argv[optind++]; |
592 |
|
593 |
if (output && !strcmp(output, "json")) { |
594 |
output_format = OFORMAT_JSON; |
595 |
} else if (output && !strcmp(output, "human")) { |
596 |
output_format = OFORMAT_HUMAN; |
597 |
} else if (output) { |
598 |
error_report("--output must be used with human or json as argument.");
|
599 |
return 1; |
600 |
} |
601 |
|
602 |
bs = bdrv_new_open(filename, fmt, flags, true, quiet);
|
603 |
if (!bs) {
|
604 |
return 1; |
605 |
} |
606 |
|
607 |
check = g_new0(ImageCheck, 1);
|
608 |
ret = collect_image_check(bs, check, filename, fmt, fix); |
609 |
|
610 |
if (ret == -ENOTSUP) {
|
611 |
if (output_format == OFORMAT_HUMAN) {
|
612 |
error_report("This image format does not support checks");
|
613 |
} |
614 |
ret = 63;
|
615 |
goto fail;
|
616 |
} |
617 |
|
618 |
if (check->corruptions_fixed || check->leaks_fixed) {
|
619 |
int corruptions_fixed, leaks_fixed;
|
620 |
|
621 |
leaks_fixed = check->leaks_fixed; |
622 |
corruptions_fixed = check->corruptions_fixed; |
623 |
|
624 |
if (output_format == OFORMAT_HUMAN) {
|
625 |
qprintf(quiet, |
626 |
"The following inconsistencies were found and repaired:\n\n"
|
627 |
" %" PRId64 " leaked clusters\n" |
628 |
" %" PRId64 " corruptions\n\n" |
629 |
"Double checking the fixed image now...\n",
|
630 |
check->leaks_fixed, |
631 |
check->corruptions_fixed); |
632 |
} |
633 |
|
634 |
ret = collect_image_check(bs, check, filename, fmt, 0);
|
635 |
|
636 |
check->leaks_fixed = leaks_fixed; |
637 |
check->corruptions_fixed = corruptions_fixed; |
638 |
} |
639 |
|
640 |
switch (output_format) {
|
641 |
case OFORMAT_HUMAN:
|
642 |
dump_human_image_check(check, quiet); |
643 |
break;
|
644 |
case OFORMAT_JSON:
|
645 |
dump_json_image_check(check, quiet); |
646 |
break;
|
647 |
} |
648 |
|
649 |
if (ret || check->check_errors) {
|
650 |
ret = 1;
|
651 |
goto fail;
|
652 |
} |
653 |
|
654 |
if (check->corruptions) {
|
655 |
ret = 2;
|
656 |
} else if (check->leaks) { |
657 |
ret = 3;
|
658 |
} else {
|
659 |
ret = 0;
|
660 |
} |
661 |
|
662 |
fail:
|
663 |
qapi_free_ImageCheck(check); |
664 |
bdrv_unref(bs); |
665 |
|
666 |
return ret;
|
667 |
} |
668 |
|
669 |
static int img_commit(int argc, char **argv) |
670 |
{ |
671 |
int c, ret, flags;
|
672 |
const char *filename, *fmt, *cache; |
673 |
BlockDriverState *bs; |
674 |
bool quiet = false; |
675 |
|
676 |
fmt = NULL;
|
677 |
cache = BDRV_DEFAULT_CACHE; |
678 |
for(;;) {
|
679 |
c = getopt(argc, argv, "f:ht:q");
|
680 |
if (c == -1) { |
681 |
break;
|
682 |
} |
683 |
switch(c) {
|
684 |
case '?': |
685 |
case 'h': |
686 |
help(); |
687 |
break;
|
688 |
case 'f': |
689 |
fmt = optarg; |
690 |
break;
|
691 |
case 't': |
692 |
cache = optarg; |
693 |
break;
|
694 |
case 'q': |
695 |
quiet = true;
|
696 |
break;
|
697 |
} |
698 |
} |
699 |
if (optind != argc - 1) { |
700 |
help(); |
701 |
} |
702 |
filename = argv[optind++]; |
703 |
|
704 |
flags = BDRV_O_RDWR; |
705 |
ret = bdrv_parse_cache_flags(cache, &flags); |
706 |
if (ret < 0) { |
707 |
error_report("Invalid cache option: %s", cache);
|
708 |
return -1; |
709 |
} |
710 |
|
711 |
bs = bdrv_new_open(filename, fmt, flags, true, quiet);
|
712 |
if (!bs) {
|
713 |
return 1; |
714 |
} |
715 |
ret = bdrv_commit(bs); |
716 |
switch(ret) {
|
717 |
case 0: |
718 |
qprintf(quiet, "Image committed.\n");
|
719 |
break;
|
720 |
case -ENOENT:
|
721 |
error_report("No disk inserted");
|
722 |
break;
|
723 |
case -EACCES:
|
724 |
error_report("Image is read-only");
|
725 |
break;
|
726 |
case -ENOTSUP:
|
727 |
error_report("Image is already committed");
|
728 |
break;
|
729 |
default:
|
730 |
error_report("Error while committing image");
|
731 |
break;
|
732 |
} |
733 |
|
734 |
bdrv_unref(bs); |
735 |
if (ret) {
|
736 |
return 1; |
737 |
} |
738 |
return 0; |
739 |
} |
740 |
|
741 |
/*
|
742 |
* Returns true iff the first sector pointed to by 'buf' contains at least
|
743 |
* a non-NUL byte.
|
744 |
*
|
745 |
* 'pnum' is set to the number of sectors (including and immediately following
|
746 |
* the first one) that are known to be in the same allocated/unallocated state.
|
747 |
*/
|
748 |
static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
749 |
{ |
750 |
bool is_zero;
|
751 |
int i;
|
752 |
|
753 |
if (n <= 0) { |
754 |
*pnum = 0;
|
755 |
return 0; |
756 |
} |
757 |
is_zero = buffer_is_zero(buf, 512);
|
758 |
for(i = 1; i < n; i++) { |
759 |
buf += 512;
|
760 |
if (is_zero != buffer_is_zero(buf, 512)) { |
761 |
break;
|
762 |
} |
763 |
} |
764 |
*pnum = i; |
765 |
return !is_zero;
|
766 |
} |
767 |
|
768 |
/*
|
769 |
* Like is_allocated_sectors, but if the buffer starts with a used sector,
|
770 |
* up to 'min' consecutive sectors containing zeros are ignored. This avoids
|
771 |
* breaking up write requests for only small sparse areas.
|
772 |
*/
|
773 |
static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, |
774 |
int min)
|
775 |
{ |
776 |
int ret;
|
777 |
int num_checked, num_used;
|
778 |
|
779 |
if (n < min) {
|
780 |
min = n; |
781 |
} |
782 |
|
783 |
ret = is_allocated_sectors(buf, n, pnum); |
784 |
if (!ret) {
|
785 |
return ret;
|
786 |
} |
787 |
|
788 |
num_used = *pnum; |
789 |
buf += BDRV_SECTOR_SIZE * *pnum; |
790 |
n -= *pnum; |
791 |
num_checked = num_used; |
792 |
|
793 |
while (n > 0) { |
794 |
ret = is_allocated_sectors(buf, n, pnum); |
795 |
|
796 |
buf += BDRV_SECTOR_SIZE * *pnum; |
797 |
n -= *pnum; |
798 |
num_checked += *pnum; |
799 |
if (ret) {
|
800 |
num_used = num_checked; |
801 |
} else if (*pnum >= min) { |
802 |
break;
|
803 |
} |
804 |
} |
805 |
|
806 |
*pnum = num_used; |
807 |
return 1; |
808 |
} |
809 |
|
810 |
/*
|
811 |
* Compares two buffers sector by sector. Returns 0 if the first sector of both
|
812 |
* buffers matches, non-zero otherwise.
|
813 |
*
|
814 |
* pnum is set to the number of sectors (including and immediately following
|
815 |
* the first one) that are known to have the same comparison result
|
816 |
*/
|
817 |
static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, |
818 |
int *pnum)
|
819 |
{ |
820 |
int res, i;
|
821 |
|
822 |
if (n <= 0) { |
823 |
*pnum = 0;
|
824 |
return 0; |
825 |
} |
826 |
|
827 |
res = !!memcmp(buf1, buf2, 512);
|
828 |
for(i = 1; i < n; i++) { |
829 |
buf1 += 512;
|
830 |
buf2 += 512;
|
831 |
|
832 |
if (!!memcmp(buf1, buf2, 512) != res) { |
833 |
break;
|
834 |
} |
835 |
} |
836 |
|
837 |
*pnum = i; |
838 |
return res;
|
839 |
} |
840 |
|
841 |
#define IO_BUF_SIZE (2 * 1024 * 1024) |
842 |
|
843 |
static int64_t sectors_to_bytes(int64_t sectors)
|
844 |
{ |
845 |
return sectors << BDRV_SECTOR_BITS;
|
846 |
} |
847 |
|
848 |
static int64_t sectors_to_process(int64_t total, int64_t from)
|
849 |
{ |
850 |
return MIN(total - from, IO_BUF_SIZE >> BDRV_SECTOR_BITS);
|
851 |
} |
852 |
|
853 |
/*
|
854 |
* Check if passed sectors are empty (not allocated or contain only 0 bytes)
|
855 |
*
|
856 |
* Returns 0 in case sectors are filled with 0, 1 if sectors contain non-zero
|
857 |
* data and negative value on error.
|
858 |
*
|
859 |
* @param bs: Driver used for accessing file
|
860 |
* @param sect_num: Number of first sector to check
|
861 |
* @param sect_count: Number of sectors to check
|
862 |
* @param filename: Name of disk file we are checking (logging purpose)
|
863 |
* @param buffer: Allocated buffer for storing read data
|
864 |
* @param quiet: Flag for quiet mode
|
865 |
*/
|
866 |
static int check_empty_sectors(BlockDriverState *bs, int64_t sect_num, |
867 |
int sect_count, const char *filename, |
868 |
uint8_t *buffer, bool quiet)
|
869 |
{ |
870 |
int pnum, ret = 0; |
871 |
ret = bdrv_read(bs, sect_num, buffer, sect_count); |
872 |
if (ret < 0) { |
873 |
error_report("Error while reading offset %" PRId64 " of %s: %s", |
874 |
sectors_to_bytes(sect_num), filename, strerror(-ret)); |
875 |
return ret;
|
876 |
} |
877 |
ret = is_allocated_sectors(buffer, sect_count, &pnum); |
878 |
if (ret || pnum != sect_count) {
|
879 |
qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
880 |
sectors_to_bytes(ret ? sect_num : sect_num + pnum)); |
881 |
return 1; |
882 |
} |
883 |
|
884 |
return 0; |
885 |
} |
886 |
|
887 |
/*
|
888 |
* Compares two images. Exit codes:
|
889 |
*
|
890 |
* 0 - Images are identical
|
891 |
* 1 - Images differ
|
892 |
* >1 - Error occurred
|
893 |
*/
|
894 |
static int img_compare(int argc, char **argv) |
895 |
{ |
896 |
const char *fmt1 = NULL, *fmt2 = NULL, *filename1, *filename2; |
897 |
BlockDriverState *bs1, *bs2; |
898 |
int64_t total_sectors1, total_sectors2; |
899 |
uint8_t *buf1 = NULL, *buf2 = NULL; |
900 |
int pnum1, pnum2;
|
901 |
int allocated1, allocated2;
|
902 |
int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ |
903 |
bool progress = false, quiet = false, strict = false; |
904 |
int64_t total_sectors; |
905 |
int64_t sector_num = 0;
|
906 |
int64_t nb_sectors; |
907 |
int c, pnum;
|
908 |
uint64_t bs_sectors; |
909 |
uint64_t progress_base; |
910 |
|
911 |
for (;;) {
|
912 |
c = getopt(argc, argv, "hpf:F:sq");
|
913 |
if (c == -1) { |
914 |
break;
|
915 |
} |
916 |
switch (c) {
|
917 |
case '?': |
918 |
case 'h': |
919 |
help(); |
920 |
break;
|
921 |
case 'f': |
922 |
fmt1 = optarg; |
923 |
break;
|
924 |
case 'F': |
925 |
fmt2 = optarg; |
926 |
break;
|
927 |
case 'p': |
928 |
progress = true;
|
929 |
break;
|
930 |
case 'q': |
931 |
quiet = true;
|
932 |
break;
|
933 |
case 's': |
934 |
strict = true;
|
935 |
break;
|
936 |
} |
937 |
} |
938 |
|
939 |
/* Progress is not shown in Quiet mode */
|
940 |
if (quiet) {
|
941 |
progress = false;
|
942 |
} |
943 |
|
944 |
|
945 |
if (optind != argc - 2) { |
946 |
help(); |
947 |
} |
948 |
filename1 = argv[optind++]; |
949 |
filename2 = argv[optind++]; |
950 |
|
951 |
/* Initialize before goto out */
|
952 |
qemu_progress_init(progress, 2.0); |
953 |
|
954 |
bs1 = bdrv_new_open(filename1, fmt1, BDRV_O_FLAGS, true, quiet);
|
955 |
if (!bs1) {
|
956 |
error_report("Can't open file %s", filename1);
|
957 |
ret = 2;
|
958 |
goto out3;
|
959 |
} |
960 |
|
961 |
bs2 = bdrv_new_open(filename2, fmt2, BDRV_O_FLAGS, true, quiet);
|
962 |
if (!bs2) {
|
963 |
error_report("Can't open file %s", filename2);
|
964 |
ret = 2;
|
965 |
goto out2;
|
966 |
} |
967 |
|
968 |
buf1 = qemu_blockalign(bs1, IO_BUF_SIZE); |
969 |
buf2 = qemu_blockalign(bs2, IO_BUF_SIZE); |
970 |
bdrv_get_geometry(bs1, &bs_sectors); |
971 |
total_sectors1 = bs_sectors; |
972 |
bdrv_get_geometry(bs2, &bs_sectors); |
973 |
total_sectors2 = bs_sectors; |
974 |
total_sectors = MIN(total_sectors1, total_sectors2); |
975 |
progress_base = MAX(total_sectors1, total_sectors2); |
976 |
|
977 |
qemu_progress_print(0, 100); |
978 |
|
979 |
if (strict && total_sectors1 != total_sectors2) {
|
980 |
ret = 1;
|
981 |
qprintf(quiet, "Strict mode: Image size mismatch!\n");
|
982 |
goto out;
|
983 |
} |
984 |
|
985 |
for (;;) {
|
986 |
nb_sectors = sectors_to_process(total_sectors, sector_num); |
987 |
if (nb_sectors <= 0) { |
988 |
break;
|
989 |
} |
990 |
allocated1 = bdrv_is_allocated_above(bs1, NULL, sector_num, nb_sectors,
|
991 |
&pnum1); |
992 |
if (allocated1 < 0) { |
993 |
ret = 3;
|
994 |
error_report("Sector allocation test failed for %s", filename1);
|
995 |
goto out;
|
996 |
} |
997 |
|
998 |
allocated2 = bdrv_is_allocated_above(bs2, NULL, sector_num, nb_sectors,
|
999 |
&pnum2); |
1000 |
if (allocated2 < 0) { |
1001 |
ret = 3;
|
1002 |
error_report("Sector allocation test failed for %s", filename2);
|
1003 |
goto out;
|
1004 |
} |
1005 |
nb_sectors = MIN(pnum1, pnum2); |
1006 |
|
1007 |
if (allocated1 == allocated2) {
|
1008 |
if (allocated1) {
|
1009 |
ret = bdrv_read(bs1, sector_num, buf1, nb_sectors); |
1010 |
if (ret < 0) { |
1011 |
error_report("Error while reading offset %" PRId64 " of %s:" |
1012 |
" %s", sectors_to_bytes(sector_num), filename1,
|
1013 |
strerror(-ret)); |
1014 |
ret = 4;
|
1015 |
goto out;
|
1016 |
} |
1017 |
ret = bdrv_read(bs2, sector_num, buf2, nb_sectors); |
1018 |
if (ret < 0) { |
1019 |
error_report("Error while reading offset %" PRId64
|
1020 |
" of %s: %s", sectors_to_bytes(sector_num),
|
1021 |
filename2, strerror(-ret)); |
1022 |
ret = 4;
|
1023 |
goto out;
|
1024 |
} |
1025 |
ret = compare_sectors(buf1, buf2, nb_sectors, &pnum); |
1026 |
if (ret || pnum != nb_sectors) {
|
1027 |
qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
1028 |
sectors_to_bytes( |
1029 |
ret ? sector_num : sector_num + pnum)); |
1030 |
ret = 1;
|
1031 |
goto out;
|
1032 |
} |
1033 |
} |
1034 |
} else {
|
1035 |
if (strict) {
|
1036 |
ret = 1;
|
1037 |
qprintf(quiet, "Strict mode: Offset %" PRId64
|
1038 |
" allocation mismatch!\n",
|
1039 |
sectors_to_bytes(sector_num)); |
1040 |
goto out;
|
1041 |
} |
1042 |
|
1043 |
if (allocated1) {
|
1044 |
ret = check_empty_sectors(bs1, sector_num, nb_sectors, |
1045 |
filename1, buf1, quiet); |
1046 |
} else {
|
1047 |
ret = check_empty_sectors(bs2, sector_num, nb_sectors, |
1048 |
filename2, buf1, quiet); |
1049 |
} |
1050 |
if (ret) {
|
1051 |
if (ret < 0) { |
1052 |
error_report("Error while reading offset %" PRId64 ": %s", |
1053 |
sectors_to_bytes(sector_num), strerror(-ret)); |
1054 |
ret = 4;
|
1055 |
} |
1056 |
goto out;
|
1057 |
} |
1058 |
} |
1059 |
sector_num += nb_sectors; |
1060 |
qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); |
1061 |
} |
1062 |
|
1063 |
if (total_sectors1 != total_sectors2) {
|
1064 |
BlockDriverState *bs_over; |
1065 |
int64_t total_sectors_over; |
1066 |
const char *filename_over; |
1067 |
|
1068 |
qprintf(quiet, "Warning: Image size mismatch!\n");
|
1069 |
if (total_sectors1 > total_sectors2) {
|
1070 |
total_sectors_over = total_sectors1; |
1071 |
bs_over = bs1; |
1072 |
filename_over = filename1; |
1073 |
} else {
|
1074 |
total_sectors_over = total_sectors2; |
1075 |
bs_over = bs2; |
1076 |
filename_over = filename2; |
1077 |
} |
1078 |
|
1079 |
for (;;) {
|
1080 |
nb_sectors = sectors_to_process(total_sectors_over, sector_num); |
1081 |
if (nb_sectors <= 0) { |
1082 |
break;
|
1083 |
} |
1084 |
ret = bdrv_is_allocated_above(bs_over, NULL, sector_num,
|
1085 |
nb_sectors, &pnum); |
1086 |
if (ret < 0) { |
1087 |
ret = 3;
|
1088 |
error_report("Sector allocation test failed for %s",
|
1089 |
filename_over); |
1090 |
goto out;
|
1091 |
|
1092 |
} |
1093 |
nb_sectors = pnum; |
1094 |
if (ret) {
|
1095 |
ret = check_empty_sectors(bs_over, sector_num, nb_sectors, |
1096 |
filename_over, buf1, quiet); |
1097 |
if (ret) {
|
1098 |
if (ret < 0) { |
1099 |
error_report("Error while reading offset %" PRId64
|
1100 |
" of %s: %s", sectors_to_bytes(sector_num),
|
1101 |
filename_over, strerror(-ret)); |
1102 |
ret = 4;
|
1103 |
} |
1104 |
goto out;
|
1105 |
} |
1106 |
} |
1107 |
sector_num += nb_sectors; |
1108 |
qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); |
1109 |
} |
1110 |
} |
1111 |
|
1112 |
qprintf(quiet, "Images are identical.\n");
|
1113 |
ret = 0;
|
1114 |
|
1115 |
out:
|
1116 |
bdrv_unref(bs2); |
1117 |
qemu_vfree(buf1); |
1118 |
qemu_vfree(buf2); |
1119 |
out2:
|
1120 |
bdrv_unref(bs1); |
1121 |
out3:
|
1122 |
qemu_progress_end(); |
1123 |
return ret;
|
1124 |
} |
1125 |
|
1126 |
static int img_convert(int argc, char **argv) |
1127 |
{ |
1128 |
int c, ret = 0, n, n1, bs_n, bs_i, compress, cluster_size, |
1129 |
cluster_sectors, skip_create; |
1130 |
int progress = 0, flags; |
1131 |
const char *fmt, *out_fmt, *cache, *out_baseimg, *out_filename; |
1132 |
BlockDriver *drv, *proto_drv; |
1133 |
BlockDriverState **bs = NULL, *out_bs = NULL; |
1134 |
int64_t total_sectors, nb_sectors, sector_num, bs_offset; |
1135 |
uint64_t bs_sectors; |
1136 |
uint8_t * buf = NULL;
|
1137 |
const uint8_t *buf1;
|
1138 |
BlockDriverInfo bdi; |
1139 |
QEMUOptionParameter *param = NULL, *create_options = NULL; |
1140 |
QEMUOptionParameter *out_baseimg_param; |
1141 |
char *options = NULL; |
1142 |
const char *snapshot_name = NULL; |
1143 |
float local_progress = 0; |
1144 |
int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ |
1145 |
bool quiet = false; |
1146 |
Error *local_err = NULL;
|
1147 |
|
1148 |
fmt = NULL;
|
1149 |
out_fmt = "raw";
|
1150 |
cache = "unsafe";
|
1151 |
out_baseimg = NULL;
|
1152 |
compress = 0;
|
1153 |
skip_create = 0;
|
1154 |
for(;;) {
|
1155 |
c = getopt(argc, argv, "f:O:B:s:hce6o:pS:t:qn");
|
1156 |
if (c == -1) { |
1157 |
break;
|
1158 |
} |
1159 |
switch(c) {
|
1160 |
case '?': |
1161 |
case 'h': |
1162 |
help(); |
1163 |
break;
|
1164 |
case 'f': |
1165 |
fmt = optarg; |
1166 |
break;
|
1167 |
case 'O': |
1168 |
out_fmt = optarg; |
1169 |
break;
|
1170 |
case 'B': |
1171 |
out_baseimg = optarg; |
1172 |
break;
|
1173 |
case 'c': |
1174 |
compress = 1;
|
1175 |
break;
|
1176 |
case 'e': |
1177 |
error_report("option -e is deprecated, please use \'-o "
|
1178 |
"encryption\' instead!");
|
1179 |
return 1; |
1180 |
case '6': |
1181 |
error_report("option -6 is deprecated, please use \'-o "
|
1182 |
"compat6\' instead!");
|
1183 |
return 1; |
1184 |
case 'o': |
1185 |
options = optarg; |
1186 |
break;
|
1187 |
case 's': |
1188 |
snapshot_name = optarg; |
1189 |
break;
|
1190 |
case 'S': |
1191 |
{ |
1192 |
int64_t sval; |
1193 |
char *end;
|
1194 |
sval = strtosz_suffix(optarg, &end, STRTOSZ_DEFSUFFIX_B); |
1195 |
if (sval < 0 || *end) { |
1196 |
error_report("Invalid minimum zero buffer size for sparse output specified");
|
1197 |
return 1; |
1198 |
} |
1199 |
|
1200 |
min_sparse = sval / BDRV_SECTOR_SIZE; |
1201 |
break;
|
1202 |
} |
1203 |
case 'p': |
1204 |
progress = 1;
|
1205 |
break;
|
1206 |
case 't': |
1207 |
cache = optarg; |
1208 |
break;
|
1209 |
case 'q': |
1210 |
quiet = true;
|
1211 |
break;
|
1212 |
case 'n': |
1213 |
skip_create = 1;
|
1214 |
break;
|
1215 |
} |
1216 |
} |
1217 |
|
1218 |
if (quiet) {
|
1219 |
progress = 0;
|
1220 |
} |
1221 |
|
1222 |
bs_n = argc - optind - 1;
|
1223 |
if (bs_n < 1) { |
1224 |
help(); |
1225 |
} |
1226 |
|
1227 |
out_filename = argv[argc - 1];
|
1228 |
|
1229 |
/* Initialize before goto out */
|
1230 |
qemu_progress_init(progress, 2.0); |
1231 |
|
1232 |
if (options && is_help_option(options)) {
|
1233 |
ret = print_block_option_help(out_filename, out_fmt); |
1234 |
goto out;
|
1235 |
} |
1236 |
|
1237 |
if (bs_n > 1 && out_baseimg) { |
1238 |
error_report("-B makes no sense when concatenating multiple input "
|
1239 |
"images");
|
1240 |
ret = -1;
|
1241 |
goto out;
|
1242 |
} |
1243 |
|
1244 |
qemu_progress_print(0, 100); |
1245 |
|
1246 |
bs = g_malloc0(bs_n * sizeof(BlockDriverState *));
|
1247 |
|
1248 |
total_sectors = 0;
|
1249 |
for (bs_i = 0; bs_i < bs_n; bs_i++) { |
1250 |
bs[bs_i] = bdrv_new_open(argv[optind + bs_i], fmt, BDRV_O_FLAGS, true,
|
1251 |
quiet); |
1252 |
if (!bs[bs_i]) {
|
1253 |
error_report("Could not open '%s'", argv[optind + bs_i]);
|
1254 |
ret = -1;
|
1255 |
goto out;
|
1256 |
} |
1257 |
bdrv_get_geometry(bs[bs_i], &bs_sectors); |
1258 |
total_sectors += bs_sectors; |
1259 |
} |
1260 |
|
1261 |
if (snapshot_name != NULL) { |
1262 |
if (bs_n > 1) { |
1263 |
error_report("No support for concatenating multiple snapshot");
|
1264 |
ret = -1;
|
1265 |
goto out;
|
1266 |
} |
1267 |
if (bdrv_snapshot_load_tmp(bs[0], snapshot_name) < 0) { |
1268 |
error_report("Failed to load snapshot");
|
1269 |
ret = -1;
|
1270 |
goto out;
|
1271 |
} |
1272 |
} |
1273 |
|
1274 |
/* Find driver and parse its options */
|
1275 |
drv = bdrv_find_format(out_fmt); |
1276 |
if (!drv) {
|
1277 |
error_report("Unknown file format '%s'", out_fmt);
|
1278 |
ret = -1;
|
1279 |
goto out;
|
1280 |
} |
1281 |
|
1282 |
proto_drv = bdrv_find_protocol(out_filename, true);
|
1283 |
if (!proto_drv) {
|
1284 |
error_report("Unknown protocol '%s'", out_filename);
|
1285 |
ret = -1;
|
1286 |
goto out;
|
1287 |
} |
1288 |
|
1289 |
create_options = append_option_parameters(create_options, |
1290 |
drv->create_options); |
1291 |
create_options = append_option_parameters(create_options, |
1292 |
proto_drv->create_options); |
1293 |
|
1294 |
if (options) {
|
1295 |
param = parse_option_parameters(options, create_options, param); |
1296 |
if (param == NULL) { |
1297 |
error_report("Invalid options for file format '%s'.", out_fmt);
|
1298 |
ret = -1;
|
1299 |
goto out;
|
1300 |
} |
1301 |
} else {
|
1302 |
param = parse_option_parameters("", create_options, param);
|
1303 |
} |
1304 |
|
1305 |
set_option_parameter_int(param, BLOCK_OPT_SIZE, total_sectors * 512);
|
1306 |
ret = add_old_style_options(out_fmt, param, out_baseimg, NULL);
|
1307 |
if (ret < 0) { |
1308 |
goto out;
|
1309 |
} |
1310 |
|
1311 |
/* Get backing file name if -o backing_file was used */
|
1312 |
out_baseimg_param = get_option_parameter(param, BLOCK_OPT_BACKING_FILE); |
1313 |
if (out_baseimg_param) {
|
1314 |
out_baseimg = out_baseimg_param->value.s; |
1315 |
} |
1316 |
|
1317 |
/* Check if compression is supported */
|
1318 |
if (compress) {
|
1319 |
QEMUOptionParameter *encryption = |
1320 |
get_option_parameter(param, BLOCK_OPT_ENCRYPT); |
1321 |
QEMUOptionParameter *preallocation = |
1322 |
get_option_parameter(param, BLOCK_OPT_PREALLOC); |
1323 |
|
1324 |
if (!drv->bdrv_write_compressed) {
|
1325 |
error_report("Compression not supported for this file format");
|
1326 |
ret = -1;
|
1327 |
goto out;
|
1328 |
} |
1329 |
|
1330 |
if (encryption && encryption->value.n) {
|
1331 |
error_report("Compression and encryption not supported at "
|
1332 |
"the same time");
|
1333 |
ret = -1;
|
1334 |
goto out;
|
1335 |
} |
1336 |
|
1337 |
if (preallocation && preallocation->value.s
|
1338 |
&& strcmp(preallocation->value.s, "off"))
|
1339 |
{ |
1340 |
error_report("Compression and preallocation not supported at "
|
1341 |
"the same time");
|
1342 |
ret = -1;
|
1343 |
goto out;
|
1344 |
} |
1345 |
} |
1346 |
|
1347 |
if (!skip_create) {
|
1348 |
/* Create the new image */
|
1349 |
ret = bdrv_create(drv, out_filename, param, &local_err); |
1350 |
if (ret < 0) { |
1351 |
error_report("%s: error while converting %s: %s",
|
1352 |
out_filename, out_fmt, error_get_pretty(local_err)); |
1353 |
error_free(local_err); |
1354 |
goto out;
|
1355 |
} |
1356 |
} |
1357 |
|
1358 |
flags = BDRV_O_RDWR; |
1359 |
ret = bdrv_parse_cache_flags(cache, &flags); |
1360 |
if (ret < 0) { |
1361 |
error_report("Invalid cache option: %s", cache);
|
1362 |
return -1; |
1363 |
} |
1364 |
|
1365 |
out_bs = bdrv_new_open(out_filename, out_fmt, flags, true, quiet);
|
1366 |
if (!out_bs) {
|
1367 |
ret = -1;
|
1368 |
goto out;
|
1369 |
} |
1370 |
|
1371 |
bs_i = 0;
|
1372 |
bs_offset = 0;
|
1373 |
bdrv_get_geometry(bs[0], &bs_sectors);
|
1374 |
buf = qemu_blockalign(out_bs, IO_BUF_SIZE); |
1375 |
|
1376 |
if (skip_create) {
|
1377 |
int64_t output_length = bdrv_getlength(out_bs); |
1378 |
if (output_length < 0) { |
1379 |
error_report("unable to get output image length: %s\n",
|
1380 |
strerror(-output_length)); |
1381 |
ret = -1;
|
1382 |
goto out;
|
1383 |
} else if (output_length < total_sectors << BDRV_SECTOR_BITS) { |
1384 |
error_report("output file is smaller than input file");
|
1385 |
ret = -1;
|
1386 |
goto out;
|
1387 |
} |
1388 |
} |
1389 |
|
1390 |
if (compress) {
|
1391 |
ret = bdrv_get_info(out_bs, &bdi); |
1392 |
if (ret < 0) { |
1393 |
error_report("could not get block driver info");
|
1394 |
goto out;
|
1395 |
} |
1396 |
cluster_size = bdi.cluster_size; |
1397 |
if (cluster_size <= 0 || cluster_size > IO_BUF_SIZE) { |
1398 |
error_report("invalid cluster size");
|
1399 |
ret = -1;
|
1400 |
goto out;
|
1401 |
} |
1402 |
cluster_sectors = cluster_size >> 9;
|
1403 |
sector_num = 0;
|
1404 |
|
1405 |
nb_sectors = total_sectors; |
1406 |
if (nb_sectors != 0) { |
1407 |
local_progress = (float)100 / |
1408 |
(nb_sectors / MIN(nb_sectors, cluster_sectors)); |
1409 |
} |
1410 |
|
1411 |
for(;;) {
|
1412 |
int64_t bs_num; |
1413 |
int remainder;
|
1414 |
uint8_t *buf2; |
1415 |
|
1416 |
nb_sectors = total_sectors - sector_num; |
1417 |
if (nb_sectors <= 0) |
1418 |
break;
|
1419 |
if (nb_sectors >= cluster_sectors)
|
1420 |
n = cluster_sectors; |
1421 |
else
|
1422 |
n = nb_sectors; |
1423 |
|
1424 |
bs_num = sector_num - bs_offset; |
1425 |
assert (bs_num >= 0);
|
1426 |
remainder = n; |
1427 |
buf2 = buf; |
1428 |
while (remainder > 0) { |
1429 |
int nlow;
|
1430 |
while (bs_num == bs_sectors) {
|
1431 |
bs_i++; |
1432 |
assert (bs_i < bs_n); |
1433 |
bs_offset += bs_sectors; |
1434 |
bdrv_get_geometry(bs[bs_i], &bs_sectors); |
1435 |
bs_num = 0;
|
1436 |
/* printf("changing part: sector_num=%" PRId64 ", "
|
1437 |
"bs_i=%d, bs_offset=%" PRId64 ", bs_sectors=%" PRId64
|
1438 |
"\n", sector_num, bs_i, bs_offset, bs_sectors); */
|
1439 |
} |
1440 |
assert (bs_num < bs_sectors); |
1441 |
|
1442 |
nlow = (remainder > bs_sectors - bs_num) ? bs_sectors - bs_num : remainder; |
1443 |
|
1444 |
ret = bdrv_read(bs[bs_i], bs_num, buf2, nlow); |
1445 |
if (ret < 0) { |
1446 |
error_report("error while reading sector %" PRId64 ": %s", |
1447 |
bs_num, strerror(-ret)); |
1448 |
goto out;
|
1449 |
} |
1450 |
|
1451 |
buf2 += nlow * 512;
|
1452 |
bs_num += nlow; |
1453 |
|
1454 |
remainder -= nlow; |
1455 |
} |
1456 |
assert (remainder == 0);
|
1457 |
|
1458 |
if (!buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)) {
|
1459 |
ret = bdrv_write_compressed(out_bs, sector_num, buf, n); |
1460 |
if (ret != 0) { |
1461 |
error_report("error while compressing sector %" PRId64
|
1462 |
": %s", sector_num, strerror(-ret));
|
1463 |
goto out;
|
1464 |
} |
1465 |
} |
1466 |
sector_num += n; |
1467 |
qemu_progress_print(local_progress, 100);
|
1468 |
} |
1469 |
/* signal EOF to align */
|
1470 |
bdrv_write_compressed(out_bs, 0, NULL, 0); |
1471 |
} else {
|
1472 |
int has_zero_init = min_sparse ? bdrv_has_zero_init(out_bs) : 0; |
1473 |
|
1474 |
sector_num = 0; // total number of sectors converted so far |
1475 |
nb_sectors = total_sectors - sector_num; |
1476 |
if (nb_sectors != 0) { |
1477 |
local_progress = (float)100 / |
1478 |
(nb_sectors / MIN(nb_sectors, IO_BUF_SIZE / 512));
|
1479 |
} |
1480 |
|
1481 |
for(;;) {
|
1482 |
nb_sectors = total_sectors - sector_num; |
1483 |
if (nb_sectors <= 0) { |
1484 |
break;
|
1485 |
} |
1486 |
if (nb_sectors >= (IO_BUF_SIZE / 512)) { |
1487 |
n = (IO_BUF_SIZE / 512);
|
1488 |
} else {
|
1489 |
n = nb_sectors; |
1490 |
} |
1491 |
|
1492 |
while (sector_num - bs_offset >= bs_sectors) {
|
1493 |
bs_i ++; |
1494 |
assert (bs_i < bs_n); |
1495 |
bs_offset += bs_sectors; |
1496 |
bdrv_get_geometry(bs[bs_i], &bs_sectors); |
1497 |
/* printf("changing part: sector_num=%" PRId64 ", bs_i=%d, "
|
1498 |
"bs_offset=%" PRId64 ", bs_sectors=%" PRId64 "\n",
|
1499 |
sector_num, bs_i, bs_offset, bs_sectors); */
|
1500 |
} |
1501 |
|
1502 |
if (n > bs_offset + bs_sectors - sector_num) {
|
1503 |
n = bs_offset + bs_sectors - sector_num; |
1504 |
} |
1505 |
|
1506 |
/* If the output image is being created as a copy on write image,
|
1507 |
assume that sectors which are unallocated in the input image
|
1508 |
are present in both the output's and input's base images (no
|
1509 |
need to copy them). */
|
1510 |
if (out_baseimg) {
|
1511 |
ret = bdrv_is_allocated(bs[bs_i], sector_num - bs_offset, |
1512 |
n, &n1); |
1513 |
if (ret < 0) { |
1514 |
error_report("error while reading metadata for sector "
|
1515 |
"%" PRId64 ": %s", |
1516 |
sector_num - bs_offset, strerror(-ret)); |
1517 |
goto out;
|
1518 |
} |
1519 |
if (!ret) {
|
1520 |
sector_num += n1; |
1521 |
continue;
|
1522 |
} |
1523 |
/* The next 'n1' sectors are allocated in the input image. Copy
|
1524 |
only those as they may be followed by unallocated sectors. */
|
1525 |
n = n1; |
1526 |
} else {
|
1527 |
n1 = n; |
1528 |
} |
1529 |
|
1530 |
ret = bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n); |
1531 |
if (ret < 0) { |
1532 |
error_report("error while reading sector %" PRId64 ": %s", |
1533 |
sector_num - bs_offset, strerror(-ret)); |
1534 |
goto out;
|
1535 |
} |
1536 |
/* NOTE: at the same time we convert, we do not write zero
|
1537 |
sectors to have a chance to compress the image. Ideally, we
|
1538 |
should add a specific call to have the info to go faster */
|
1539 |
buf1 = buf; |
1540 |
while (n > 0) { |
1541 |
if (!has_zero_init ||
|
1542 |
is_allocated_sectors_min(buf1, n, &n1, min_sparse)) { |
1543 |
ret = bdrv_write(out_bs, sector_num, buf1, n1); |
1544 |
if (ret < 0) { |
1545 |
error_report("error while writing sector %" PRId64
|
1546 |
": %s", sector_num, strerror(-ret));
|
1547 |
goto out;
|
1548 |
} |
1549 |
} |
1550 |
sector_num += n1; |
1551 |
n -= n1; |
1552 |
buf1 += n1 * 512;
|
1553 |
} |
1554 |
qemu_progress_print(local_progress, 100);
|
1555 |
} |
1556 |
} |
1557 |
out:
|
1558 |
qemu_progress_end(); |
1559 |
free_option_parameters(create_options); |
1560 |
free_option_parameters(param); |
1561 |
qemu_vfree(buf); |
1562 |
if (out_bs) {
|
1563 |
bdrv_unref(out_bs); |
1564 |
} |
1565 |
if (bs) {
|
1566 |
for (bs_i = 0; bs_i < bs_n; bs_i++) { |
1567 |
if (bs[bs_i]) {
|
1568 |
bdrv_unref(bs[bs_i]); |
1569 |
} |
1570 |
} |
1571 |
g_free(bs); |
1572 |
} |
1573 |
if (ret) {
|
1574 |
return 1; |
1575 |
} |
1576 |
return 0; |
1577 |
} |
1578 |
|
1579 |
|
1580 |
static void dump_snapshots(BlockDriverState *bs) |
1581 |
{ |
1582 |
QEMUSnapshotInfo *sn_tab, *sn; |
1583 |
int nb_sns, i;
|
1584 |
|
1585 |
nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
1586 |
if (nb_sns <= 0) |
1587 |
return;
|
1588 |
printf("Snapshot list:\n");
|
1589 |
bdrv_snapshot_dump(fprintf, stdout, NULL);
|
1590 |
printf("\n");
|
1591 |
for(i = 0; i < nb_sns; i++) { |
1592 |
sn = &sn_tab[i]; |
1593 |
bdrv_snapshot_dump(fprintf, stdout, sn); |
1594 |
printf("\n");
|
1595 |
} |
1596 |
g_free(sn_tab); |
1597 |
} |
1598 |
|
1599 |
static void dump_json_image_info_list(ImageInfoList *list) |
1600 |
{ |
1601 |
Error *errp = NULL;
|
1602 |
QString *str; |
1603 |
QmpOutputVisitor *ov = qmp_output_visitor_new(); |
1604 |
QObject *obj; |
1605 |
visit_type_ImageInfoList(qmp_output_get_visitor(ov), |
1606 |
&list, NULL, &errp);
|
1607 |
obj = qmp_output_get_qobject(ov); |
1608 |
str = qobject_to_json_pretty(obj); |
1609 |
assert(str != NULL);
|
1610 |
printf("%s\n", qstring_get_str(str));
|
1611 |
qobject_decref(obj); |
1612 |
qmp_output_visitor_cleanup(ov); |
1613 |
QDECREF(str); |
1614 |
} |
1615 |
|
1616 |
static void dump_json_image_info(ImageInfo *info) |
1617 |
{ |
1618 |
Error *errp = NULL;
|
1619 |
QString *str; |
1620 |
QmpOutputVisitor *ov = qmp_output_visitor_new(); |
1621 |
QObject *obj; |
1622 |
visit_type_ImageInfo(qmp_output_get_visitor(ov), |
1623 |
&info, NULL, &errp);
|
1624 |
obj = qmp_output_get_qobject(ov); |
1625 |
str = qobject_to_json_pretty(obj); |
1626 |
assert(str != NULL);
|
1627 |
printf("%s\n", qstring_get_str(str));
|
1628 |
qobject_decref(obj); |
1629 |
qmp_output_visitor_cleanup(ov); |
1630 |
QDECREF(str); |
1631 |
} |
1632 |
|
1633 |
static void dump_human_image_info_list(ImageInfoList *list) |
1634 |
{ |
1635 |
ImageInfoList *elem; |
1636 |
bool delim = false; |
1637 |
|
1638 |
for (elem = list; elem; elem = elem->next) {
|
1639 |
if (delim) {
|
1640 |
printf("\n");
|
1641 |
} |
1642 |
delim = true;
|
1643 |
|
1644 |
bdrv_image_info_dump(fprintf, stdout, elem->value); |
1645 |
} |
1646 |
} |
1647 |
|
1648 |
static gboolean str_equal_func(gconstpointer a, gconstpointer b)
|
1649 |
{ |
1650 |
return strcmp(a, b) == 0; |
1651 |
} |
1652 |
|
1653 |
/**
|
1654 |
* Open an image file chain and return an ImageInfoList
|
1655 |
*
|
1656 |
* @filename: topmost image filename
|
1657 |
* @fmt: topmost image format (may be NULL to autodetect)
|
1658 |
* @chain: true - enumerate entire backing file chain
|
1659 |
* false - only topmost image file
|
1660 |
*
|
1661 |
* Returns a list of ImageInfo objects or NULL if there was an error opening an
|
1662 |
* image file. If there was an error a message will have been printed to
|
1663 |
* stderr.
|
1664 |
*/
|
1665 |
static ImageInfoList *collect_image_info_list(const char *filename, |
1666 |
const char *fmt, |
1667 |
bool chain)
|
1668 |
{ |
1669 |
ImageInfoList *head = NULL;
|
1670 |
ImageInfoList **last = &head; |
1671 |
GHashTable *filenames; |
1672 |
Error *err = NULL;
|
1673 |
|
1674 |
filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); |
1675 |
|
1676 |
while (filename) {
|
1677 |
BlockDriverState *bs; |
1678 |
ImageInfo *info; |
1679 |
ImageInfoList *elem; |
1680 |
|
1681 |
if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { |
1682 |
error_report("Backing file '%s' creates an infinite loop.",
|
1683 |
filename); |
1684 |
goto err;
|
1685 |
} |
1686 |
g_hash_table_insert(filenames, (gpointer)filename, NULL);
|
1687 |
|
1688 |
bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_NO_BACKING, |
1689 |
false, false); |
1690 |
if (!bs) {
|
1691 |
goto err;
|
1692 |
} |
1693 |
|
1694 |
bdrv_query_image_info(bs, &info, &err); |
1695 |
if (error_is_set(&err)) {
|
1696 |
error_report("%s", error_get_pretty(err));
|
1697 |
error_free(err); |
1698 |
goto err;
|
1699 |
} |
1700 |
|
1701 |
elem = g_new0(ImageInfoList, 1);
|
1702 |
elem->value = info; |
1703 |
*last = elem; |
1704 |
last = &elem->next; |
1705 |
|
1706 |
bdrv_unref(bs); |
1707 |
|
1708 |
filename = fmt = NULL;
|
1709 |
if (chain) {
|
1710 |
if (info->has_full_backing_filename) {
|
1711 |
filename = info->full_backing_filename; |
1712 |
} else if (info->has_backing_filename) { |
1713 |
filename = info->backing_filename; |
1714 |
} |
1715 |
if (info->has_backing_filename_format) {
|
1716 |
fmt = info->backing_filename_format; |
1717 |
} |
1718 |
} |
1719 |
} |
1720 |
g_hash_table_destroy(filenames); |
1721 |
return head;
|
1722 |
|
1723 |
err:
|
1724 |
qapi_free_ImageInfoList(head); |
1725 |
g_hash_table_destroy(filenames); |
1726 |
return NULL; |
1727 |
} |
1728 |
|
1729 |
static int img_info(int argc, char **argv) |
1730 |
{ |
1731 |
int c;
|
1732 |
OutputFormat output_format = OFORMAT_HUMAN; |
1733 |
bool chain = false; |
1734 |
const char *filename, *fmt, *output; |
1735 |
ImageInfoList *list; |
1736 |
|
1737 |
fmt = NULL;
|
1738 |
output = NULL;
|
1739 |
for(;;) {
|
1740 |
int option_index = 0; |
1741 |
static const struct option long_options[] = { |
1742 |
{"help", no_argument, 0, 'h'}, |
1743 |
{"format", required_argument, 0, 'f'}, |
1744 |
{"output", required_argument, 0, OPTION_OUTPUT}, |
1745 |
{"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
1746 |
{0, 0, 0, 0} |
1747 |
}; |
1748 |
c = getopt_long(argc, argv, "f:h",
|
1749 |
long_options, &option_index); |
1750 |
if (c == -1) { |
1751 |
break;
|
1752 |
} |
1753 |
switch(c) {
|
1754 |
case '?': |
1755 |
case 'h': |
1756 |
help(); |
1757 |
break;
|
1758 |
case 'f': |
1759 |
fmt = optarg; |
1760 |
break;
|
1761 |
case OPTION_OUTPUT:
|
1762 |
output = optarg; |
1763 |
break;
|
1764 |
case OPTION_BACKING_CHAIN:
|
1765 |
chain = true;
|
1766 |
break;
|
1767 |
} |
1768 |
} |
1769 |
if (optind != argc - 1) { |
1770 |
help(); |
1771 |
} |
1772 |
filename = argv[optind++]; |
1773 |
|
1774 |
if (output && !strcmp(output, "json")) { |
1775 |
output_format = OFORMAT_JSON; |
1776 |
} else if (output && !strcmp(output, "human")) { |
1777 |
output_format = OFORMAT_HUMAN; |
1778 |
} else if (output) { |
1779 |
error_report("--output must be used with human or json as argument.");
|
1780 |
return 1; |
1781 |
} |
1782 |
|
1783 |
list = collect_image_info_list(filename, fmt, chain); |
1784 |
if (!list) {
|
1785 |
return 1; |
1786 |
} |
1787 |
|
1788 |
switch (output_format) {
|
1789 |
case OFORMAT_HUMAN:
|
1790 |
dump_human_image_info_list(list); |
1791 |
break;
|
1792 |
case OFORMAT_JSON:
|
1793 |
if (chain) {
|
1794 |
dump_json_image_info_list(list); |
1795 |
} else {
|
1796 |
dump_json_image_info(list->value); |
1797 |
} |
1798 |
break;
|
1799 |
} |
1800 |
|
1801 |
qapi_free_ImageInfoList(list); |
1802 |
return 0; |
1803 |
} |
1804 |
|
1805 |
|
1806 |
typedef struct MapEntry { |
1807 |
int flags;
|
1808 |
int depth;
|
1809 |
int64_t start; |
1810 |
int64_t length; |
1811 |
int64_t offset; |
1812 |
BlockDriverState *bs; |
1813 |
} MapEntry; |
1814 |
|
1815 |
static void dump_map_entry(OutputFormat output_format, MapEntry *e, |
1816 |
MapEntry *next) |
1817 |
{ |
1818 |
switch (output_format) {
|
1819 |
case OFORMAT_HUMAN:
|
1820 |
if ((e->flags & BDRV_BLOCK_DATA) &&
|
1821 |
!(e->flags & BDRV_BLOCK_OFFSET_VALID)) { |
1822 |
error_report("File contains external, encrypted or compressed clusters.");
|
1823 |
exit(1);
|
1824 |
} |
1825 |
if ((e->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) == BDRV_BLOCK_DATA) {
|
1826 |
printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", |
1827 |
e->start, e->length, e->offset, e->bs->filename); |
1828 |
} |
1829 |
/* This format ignores the distinction between 0, ZERO and ZERO|DATA.
|
1830 |
* Modify the flags here to allow more coalescing.
|
1831 |
*/
|
1832 |
if (next &&
|
1833 |
(next->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) != BDRV_BLOCK_DATA) { |
1834 |
next->flags &= ~BDRV_BLOCK_DATA; |
1835 |
next->flags |= BDRV_BLOCK_ZERO; |
1836 |
} |
1837 |
break;
|
1838 |
case OFORMAT_JSON:
|
1839 |
printf("%s{ \"start\": %"PRId64", \"length\": %"PRId64", \"depth\": %d," |
1840 |
" \"zero\": %s, \"data\": %s",
|
1841 |
(e->start == 0 ? "[" : ",\n"), |
1842 |
e->start, e->length, e->depth, |
1843 |
(e->flags & BDRV_BLOCK_ZERO) ? "true" : "false", |
1844 |
(e->flags & BDRV_BLOCK_DATA) ? "true" : "false"); |
1845 |
if (e->flags & BDRV_BLOCK_OFFSET_VALID) {
|
1846 |
printf(", \"offset\": %"PRId64"", e->offset); |
1847 |
} |
1848 |
putchar('}');
|
1849 |
|
1850 |
if (!next) {
|
1851 |
printf("]\n");
|
1852 |
} |
1853 |
break;
|
1854 |
} |
1855 |
} |
1856 |
|
1857 |
static int get_block_status(BlockDriverState *bs, int64_t sector_num, |
1858 |
int nb_sectors, MapEntry *e)
|
1859 |
{ |
1860 |
int64_t ret; |
1861 |
int depth;
|
1862 |
|
1863 |
/* As an optimization, we could cache the current range of unallocated
|
1864 |
* clusters in each file of the chain, and avoid querying the same
|
1865 |
* range repeatedly.
|
1866 |
*/
|
1867 |
|
1868 |
depth = 0;
|
1869 |
for (;;) {
|
1870 |
ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &nb_sectors); |
1871 |
if (ret < 0) { |
1872 |
return ret;
|
1873 |
} |
1874 |
assert(nb_sectors); |
1875 |
if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) {
|
1876 |
break;
|
1877 |
} |
1878 |
bs = bs->backing_hd; |
1879 |
if (bs == NULL) { |
1880 |
ret = 0;
|
1881 |
break;
|
1882 |
} |
1883 |
|
1884 |
depth++; |
1885 |
} |
1886 |
|
1887 |
e->start = sector_num * BDRV_SECTOR_SIZE; |
1888 |
e->length = nb_sectors * BDRV_SECTOR_SIZE; |
1889 |
e->flags = ret & ~BDRV_BLOCK_OFFSET_MASK; |
1890 |
e->offset = ret & BDRV_BLOCK_OFFSET_MASK; |
1891 |
e->depth = depth; |
1892 |
e->bs = bs; |
1893 |
return 0; |
1894 |
} |
1895 |
|
1896 |
static int img_map(int argc, char **argv) |
1897 |
{ |
1898 |
int c;
|
1899 |
OutputFormat output_format = OFORMAT_HUMAN; |
1900 |
BlockDriverState *bs; |
1901 |
const char *filename, *fmt, *output; |
1902 |
int64_t length; |
1903 |
MapEntry curr = { .length = 0 }, next;
|
1904 |
int ret = 0; |
1905 |
|
1906 |
fmt = NULL;
|
1907 |
output = NULL;
|
1908 |
for (;;) {
|
1909 |
int option_index = 0; |
1910 |
static const struct option long_options[] = { |
1911 |
{"help", no_argument, 0, 'h'}, |
1912 |
{"format", required_argument, 0, 'f'}, |
1913 |
{"output", required_argument, 0, OPTION_OUTPUT}, |
1914 |
{0, 0, 0, 0} |
1915 |
}; |
1916 |
c = getopt_long(argc, argv, "f:h",
|
1917 |
long_options, &option_index); |
1918 |
if (c == -1) { |
1919 |
break;
|
1920 |
} |
1921 |
switch (c) {
|
1922 |
case '?': |
1923 |
case 'h': |
1924 |
help(); |
1925 |
break;
|
1926 |
case 'f': |
1927 |
fmt = optarg; |
1928 |
break;
|
1929 |
case OPTION_OUTPUT:
|
1930 |
output = optarg; |
1931 |
break;
|
1932 |
} |
1933 |
} |
1934 |
if (optind >= argc) {
|
1935 |
help(); |
1936 |
} |
1937 |
filename = argv[optind++]; |
1938 |
|
1939 |
if (output && !strcmp(output, "json")) { |
1940 |
output_format = OFORMAT_JSON; |
1941 |
} else if (output && !strcmp(output, "human")) { |
1942 |
output_format = OFORMAT_HUMAN; |
1943 |
} else if (output) { |
1944 |
error_report("--output must be used with human or json as argument.");
|
1945 |
return 1; |
1946 |
} |
1947 |
|
1948 |
bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS, true, false); |
1949 |
if (!bs) {
|
1950 |
return 1; |
1951 |
} |
1952 |
|
1953 |
if (output_format == OFORMAT_HUMAN) {
|
1954 |
printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); |
1955 |
} |
1956 |
|
1957 |
length = bdrv_getlength(bs); |
1958 |
while (curr.start + curr.length < length) {
|
1959 |
int64_t nsectors_left; |
1960 |
int64_t sector_num; |
1961 |
int n;
|
1962 |
|
1963 |
sector_num = (curr.start + curr.length) >> BDRV_SECTOR_BITS; |
1964 |
|
1965 |
/* Probe up to 1 GiB at a time. */
|
1966 |
nsectors_left = DIV_ROUND_UP(length, BDRV_SECTOR_SIZE) - sector_num; |
1967 |
n = MIN(1 << (30 - BDRV_SECTOR_BITS), nsectors_left); |
1968 |
ret = get_block_status(bs, sector_num, n, &next); |
1969 |
|
1970 |
if (ret < 0) { |
1971 |
error_report("Could not read file metadata: %s", strerror(-ret));
|
1972 |
goto out;
|
1973 |
} |
1974 |
|
1975 |
if (curr.length != 0 && curr.flags == next.flags && |
1976 |
curr.depth == next.depth && |
1977 |
((curr.flags & BDRV_BLOCK_OFFSET_VALID) == 0 ||
|
1978 |
curr.offset + curr.length == next.offset)) { |
1979 |
curr.length += next.length; |
1980 |
continue;
|
1981 |
} |
1982 |
|
1983 |
if (curr.length > 0) { |
1984 |
dump_map_entry(output_format, &curr, &next); |
1985 |
} |
1986 |
curr = next; |
1987 |
} |
1988 |
|
1989 |
dump_map_entry(output_format, &curr, NULL);
|
1990 |
|
1991 |
out:
|
1992 |
bdrv_unref(bs); |
1993 |
return ret < 0; |
1994 |
} |
1995 |
|
1996 |
#define SNAPSHOT_LIST 1 |
1997 |
#define SNAPSHOT_CREATE 2 |
1998 |
#define SNAPSHOT_APPLY 3 |
1999 |
#define SNAPSHOT_DELETE 4 |
2000 |
|
2001 |
static int img_snapshot(int argc, char **argv) |
2002 |
{ |
2003 |
BlockDriverState *bs; |
2004 |
QEMUSnapshotInfo sn; |
2005 |
char *filename, *snapshot_name = NULL; |
2006 |
int c, ret = 0, bdrv_oflags; |
2007 |
int action = 0; |
2008 |
qemu_timeval tv; |
2009 |
bool quiet = false; |
2010 |
Error *err = NULL;
|
2011 |
|
2012 |
bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR; |
2013 |
/* Parse commandline parameters */
|
2014 |
for(;;) {
|
2015 |
c = getopt(argc, argv, "la:c:d:hq");
|
2016 |
if (c == -1) { |
2017 |
break;
|
2018 |
} |
2019 |
switch(c) {
|
2020 |
case '?': |
2021 |
case 'h': |
2022 |
help(); |
2023 |
return 0; |
2024 |
case 'l': |
2025 |
if (action) {
|
2026 |
help(); |
2027 |
return 0; |
2028 |
} |
2029 |
action = SNAPSHOT_LIST; |
2030 |
bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */
|
2031 |
break;
|
2032 |
case 'a': |
2033 |
if (action) {
|
2034 |
help(); |
2035 |
return 0; |
2036 |
} |
2037 |
action = SNAPSHOT_APPLY; |
2038 |
snapshot_name = optarg; |
2039 |
break;
|
2040 |
case 'c': |
2041 |
if (action) {
|
2042 |
help(); |
2043 |
return 0; |
2044 |
} |
2045 |
action = SNAPSHOT_CREATE; |
2046 |
snapshot_name = optarg; |
2047 |
break;
|
2048 |
case 'd': |
2049 |
if (action) {
|
2050 |
help(); |
2051 |
return 0; |
2052 |
} |
2053 |
action = SNAPSHOT_DELETE; |
2054 |
snapshot_name = optarg; |
2055 |
break;
|
2056 |
case 'q': |
2057 |
quiet = true;
|
2058 |
break;
|
2059 |
} |
2060 |
} |
2061 |
|
2062 |
if (optind != argc - 1) { |
2063 |
help(); |
2064 |
} |
2065 |
filename = argv[optind++]; |
2066 |
|
2067 |
/* Open the image */
|
2068 |
bs = bdrv_new_open(filename, NULL, bdrv_oflags, true, quiet); |
2069 |
if (!bs) {
|
2070 |
return 1; |
2071 |
} |
2072 |
|
2073 |
/* Perform the requested action */
|
2074 |
switch(action) {
|
2075 |
case SNAPSHOT_LIST:
|
2076 |
dump_snapshots(bs); |
2077 |
break;
|
2078 |
|
2079 |
case SNAPSHOT_CREATE:
|
2080 |
memset(&sn, 0, sizeof(sn)); |
2081 |
pstrcpy(sn.name, sizeof(sn.name), snapshot_name);
|
2082 |
|
2083 |
qemu_gettimeofday(&tv); |
2084 |
sn.date_sec = tv.tv_sec; |
2085 |
sn.date_nsec = tv.tv_usec * 1000;
|
2086 |
|
2087 |
ret = bdrv_snapshot_create(bs, &sn); |
2088 |
if (ret) {
|
2089 |
error_report("Could not create snapshot '%s': %d (%s)",
|
2090 |
snapshot_name, ret, strerror(-ret)); |
2091 |
} |
2092 |
break;
|
2093 |
|
2094 |
case SNAPSHOT_APPLY:
|
2095 |
ret = bdrv_snapshot_goto(bs, snapshot_name); |
2096 |
if (ret) {
|
2097 |
error_report("Could not apply snapshot '%s': %d (%s)",
|
2098 |
snapshot_name, ret, strerror(-ret)); |
2099 |
} |
2100 |
break;
|
2101 |
|
2102 |
case SNAPSHOT_DELETE:
|
2103 |
bdrv_snapshot_delete_by_id_or_name(bs, snapshot_name, &err); |
2104 |
if (error_is_set(&err)) {
|
2105 |
error_report("Could not delete snapshot '%s': (%s)",
|
2106 |
snapshot_name, error_get_pretty(err)); |
2107 |
error_free(err); |
2108 |
ret = 1;
|
2109 |
} |
2110 |
break;
|
2111 |
} |
2112 |
|
2113 |
/* Cleanup */
|
2114 |
bdrv_unref(bs); |
2115 |
if (ret) {
|
2116 |
return 1; |
2117 |
} |
2118 |
return 0; |
2119 |
} |
2120 |
|
2121 |
static int img_rebase(int argc, char **argv) |
2122 |
{ |
2123 |
BlockDriverState *bs, *bs_old_backing = NULL, *bs_new_backing = NULL; |
2124 |
BlockDriver *old_backing_drv, *new_backing_drv; |
2125 |
char *filename;
|
2126 |
const char *fmt, *cache, *out_basefmt, *out_baseimg; |
2127 |
int c, flags, ret;
|
2128 |
int unsafe = 0; |
2129 |
int progress = 0; |
2130 |
bool quiet = false; |
2131 |
Error *local_err = NULL;
|
2132 |
|
2133 |
/* Parse commandline parameters */
|
2134 |
fmt = NULL;
|
2135 |
cache = BDRV_DEFAULT_CACHE; |
2136 |
out_baseimg = NULL;
|
2137 |
out_basefmt = NULL;
|
2138 |
for(;;) {
|
2139 |
c = getopt(argc, argv, "uhf:F:b:pt:q");
|
2140 |
if (c == -1) { |
2141 |
break;
|
2142 |
} |
2143 |
switch(c) {
|
2144 |
case '?': |
2145 |
case 'h': |
2146 |
help(); |
2147 |
return 0; |
2148 |
case 'f': |
2149 |
fmt = optarg; |
2150 |
break;
|
2151 |
case 'F': |
2152 |
out_basefmt = optarg; |
2153 |
break;
|
2154 |
case 'b': |
2155 |
out_baseimg = optarg; |
2156 |
break;
|
2157 |
case 'u': |
2158 |
unsafe = 1;
|
2159 |
break;
|
2160 |
case 'p': |
2161 |
progress = 1;
|
2162 |
break;
|
2163 |
case 't': |
2164 |
cache = optarg; |
2165 |
break;
|
2166 |
case 'q': |
2167 |
quiet = true;
|
2168 |
break;
|
2169 |
} |
2170 |
} |
2171 |
|
2172 |
if (quiet) {
|
2173 |
progress = 0;
|
2174 |
} |
2175 |
|
2176 |
if ((optind != argc - 1) || (!unsafe && !out_baseimg)) { |
2177 |
help(); |
2178 |
} |
2179 |
filename = argv[optind++]; |
2180 |
|
2181 |
qemu_progress_init(progress, 2.0); |
2182 |
qemu_progress_print(0, 100); |
2183 |
|
2184 |
flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0);
|
2185 |
ret = bdrv_parse_cache_flags(cache, &flags); |
2186 |
if (ret < 0) { |
2187 |
error_report("Invalid cache option: %s", cache);
|
2188 |
return -1; |
2189 |
} |
2190 |
|
2191 |
/*
|
2192 |
* Open the images.
|
2193 |
*
|
2194 |
* Ignore the old backing file for unsafe rebase in case we want to correct
|
2195 |
* the reference to a renamed or moved backing file.
|
2196 |
*/
|
2197 |
bs = bdrv_new_open(filename, fmt, flags, true, quiet);
|
2198 |
if (!bs) {
|
2199 |
return 1; |
2200 |
} |
2201 |
|
2202 |
/* Find the right drivers for the backing files */
|
2203 |
old_backing_drv = NULL;
|
2204 |
new_backing_drv = NULL;
|
2205 |
|
2206 |
if (!unsafe && bs->backing_format[0] != '\0') { |
2207 |
old_backing_drv = bdrv_find_format(bs->backing_format); |
2208 |
if (old_backing_drv == NULL) { |
2209 |
error_report("Invalid format name: '%s'", bs->backing_format);
|
2210 |
ret = -1;
|
2211 |
goto out;
|
2212 |
} |
2213 |
} |
2214 |
|
2215 |
if (out_basefmt != NULL) { |
2216 |
new_backing_drv = bdrv_find_format(out_basefmt); |
2217 |
if (new_backing_drv == NULL) { |
2218 |
error_report("Invalid format name: '%s'", out_basefmt);
|
2219 |
ret = -1;
|
2220 |
goto out;
|
2221 |
} |
2222 |
} |
2223 |
|
2224 |
/* For safe rebasing we need to compare old and new backing file */
|
2225 |
if (unsafe) {
|
2226 |
/* Make the compiler happy */
|
2227 |
bs_old_backing = NULL;
|
2228 |
bs_new_backing = NULL;
|
2229 |
} else {
|
2230 |
char backing_name[1024]; |
2231 |
|
2232 |
bs_old_backing = bdrv_new("old_backing");
|
2233 |
bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name));
|
2234 |
ret = bdrv_open(bs_old_backing, backing_name, NULL, BDRV_O_FLAGS,
|
2235 |
old_backing_drv, &local_err); |
2236 |
if (ret) {
|
2237 |
error_report("Could not open old backing file '%s': %s",
|
2238 |
backing_name, error_get_pretty(local_err)); |
2239 |
error_free(local_err); |
2240 |
goto out;
|
2241 |
} |
2242 |
if (out_baseimg[0]) { |
2243 |
bs_new_backing = bdrv_new("new_backing");
|
2244 |
ret = bdrv_open(bs_new_backing, out_baseimg, NULL, BDRV_O_FLAGS,
|
2245 |
new_backing_drv, &local_err); |
2246 |
if (ret) {
|
2247 |
error_report("Could not open new backing file '%s': %s",
|
2248 |
out_baseimg, error_get_pretty(local_err)); |
2249 |
error_free(local_err); |
2250 |
goto out;
|
2251 |
} |
2252 |
} |
2253 |
} |
2254 |
|
2255 |
/*
|
2256 |
* Check each unallocated cluster in the COW file. If it is unallocated,
|
2257 |
* accesses go to the backing file. We must therefore compare this cluster
|
2258 |
* in the old and new backing file, and if they differ we need to copy it
|
2259 |
* from the old backing file into the COW file.
|
2260 |
*
|
2261 |
* If qemu-img crashes during this step, no harm is done. The content of
|
2262 |
* the image is the same as the original one at any time.
|
2263 |
*/
|
2264 |
if (!unsafe) {
|
2265 |
uint64_t num_sectors; |
2266 |
uint64_t old_backing_num_sectors; |
2267 |
uint64_t new_backing_num_sectors = 0;
|
2268 |
uint64_t sector; |
2269 |
int n;
|
2270 |
uint8_t * buf_old; |
2271 |
uint8_t * buf_new; |
2272 |
float local_progress = 0; |
2273 |
|
2274 |
buf_old = qemu_blockalign(bs, IO_BUF_SIZE); |
2275 |
buf_new = qemu_blockalign(bs, IO_BUF_SIZE); |
2276 |
|
2277 |
bdrv_get_geometry(bs, &num_sectors); |
2278 |
bdrv_get_geometry(bs_old_backing, &old_backing_num_sectors); |
2279 |
if (bs_new_backing) {
|
2280 |
bdrv_get_geometry(bs_new_backing, &new_backing_num_sectors); |
2281 |
} |
2282 |
|
2283 |
if (num_sectors != 0) { |
2284 |
local_progress = (float)100 / |
2285 |
(num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512));
|
2286 |
} |
2287 |
|
2288 |
for (sector = 0; sector < num_sectors; sector += n) { |
2289 |
|
2290 |
/* How many sectors can we handle with the next read? */
|
2291 |
if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { |
2292 |
n = (IO_BUF_SIZE / 512);
|
2293 |
} else {
|
2294 |
n = num_sectors - sector; |
2295 |
} |
2296 |
|
2297 |
/* If the cluster is allocated, we don't need to take action */
|
2298 |
ret = bdrv_is_allocated(bs, sector, n, &n); |
2299 |
if (ret < 0) { |
2300 |
error_report("error while reading image metadata: %s",
|
2301 |
strerror(-ret)); |
2302 |
goto out;
|
2303 |
} |
2304 |
if (ret) {
|
2305 |
continue;
|
2306 |
} |
2307 |
|
2308 |
/*
|
2309 |
* Read old and new backing file and take into consideration that
|
2310 |
* backing files may be smaller than the COW image.
|
2311 |
*/
|
2312 |
if (sector >= old_backing_num_sectors) {
|
2313 |
memset(buf_old, 0, n * BDRV_SECTOR_SIZE);
|
2314 |
} else {
|
2315 |
if (sector + n > old_backing_num_sectors) {
|
2316 |
n = old_backing_num_sectors - sector; |
2317 |
} |
2318 |
|
2319 |
ret = bdrv_read(bs_old_backing, sector, buf_old, n); |
2320 |
if (ret < 0) { |
2321 |
error_report("error while reading from old backing file");
|
2322 |
goto out;
|
2323 |
} |
2324 |
} |
2325 |
|
2326 |
if (sector >= new_backing_num_sectors || !bs_new_backing) {
|
2327 |
memset(buf_new, 0, n * BDRV_SECTOR_SIZE);
|
2328 |
} else {
|
2329 |
if (sector + n > new_backing_num_sectors) {
|
2330 |
n = new_backing_num_sectors - sector; |
2331 |
} |
2332 |
|
2333 |
ret = bdrv_read(bs_new_backing, sector, buf_new, n); |
2334 |
if (ret < 0) { |
2335 |
error_report("error while reading from new backing file");
|
2336 |
goto out;
|
2337 |
} |
2338 |
} |
2339 |
|
2340 |
/* If they differ, we need to write to the COW file */
|
2341 |
uint64_t written = 0;
|
2342 |
|
2343 |
while (written < n) {
|
2344 |
int pnum;
|
2345 |
|
2346 |
if (compare_sectors(buf_old + written * 512, |
2347 |
buf_new + written * 512, n - written, &pnum))
|
2348 |
{ |
2349 |
ret = bdrv_write(bs, sector + written, |
2350 |
buf_old + written * 512, pnum);
|
2351 |
if (ret < 0) { |
2352 |
error_report("Error while writing to COW image: %s",
|
2353 |
strerror(-ret)); |
2354 |
goto out;
|
2355 |
} |
2356 |
} |
2357 |
|
2358 |
written += pnum; |
2359 |
} |
2360 |
qemu_progress_print(local_progress, 100);
|
2361 |
} |
2362 |
|
2363 |
qemu_vfree(buf_old); |
2364 |
qemu_vfree(buf_new); |
2365 |
} |
2366 |
|
2367 |
/*
|
2368 |
* Change the backing file. All clusters that are different from the old
|
2369 |
* backing file are overwritten in the COW file now, so the visible content
|
2370 |
* doesn't change when we switch the backing file.
|
2371 |
*/
|
2372 |
if (out_baseimg && *out_baseimg) {
|
2373 |
ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); |
2374 |
} else {
|
2375 |
ret = bdrv_change_backing_file(bs, NULL, NULL); |
2376 |
} |
2377 |
|
2378 |
if (ret == -ENOSPC) {
|
2379 |
error_report("Could not change the backing file to '%s': No "
|
2380 |
"space left in the file header", out_baseimg);
|
2381 |
} else if (ret < 0) { |
2382 |
error_report("Could not change the backing file to '%s': %s",
|
2383 |
out_baseimg, strerror(-ret)); |
2384 |
} |
2385 |
|
2386 |
qemu_progress_print(100, 0); |
2387 |
/*
|
2388 |
* TODO At this point it is possible to check if any clusters that are
|
2389 |
* allocated in the COW file are the same in the backing file. If so, they
|
2390 |
* could be dropped from the COW file. Don't do this before switching the
|
2391 |
* backing file, in case of a crash this would lead to corruption.
|
2392 |
*/
|
2393 |
out:
|
2394 |
qemu_progress_end(); |
2395 |
/* Cleanup */
|
2396 |
if (!unsafe) {
|
2397 |
if (bs_old_backing != NULL) { |
2398 |
bdrv_unref(bs_old_backing); |
2399 |
} |
2400 |
if (bs_new_backing != NULL) { |
2401 |
bdrv_unref(bs_new_backing); |
2402 |
} |
2403 |
} |
2404 |
|
2405 |
bdrv_unref(bs); |
2406 |
if (ret) {
|
2407 |
return 1; |
2408 |
} |
2409 |
return 0; |
2410 |
} |
2411 |
|
2412 |
static int img_resize(int argc, char **argv) |
2413 |
{ |
2414 |
int c, ret, relative;
|
2415 |
const char *filename, *fmt, *size; |
2416 |
int64_t n, total_size; |
2417 |
bool quiet = false; |
2418 |
BlockDriverState *bs = NULL;
|
2419 |
QemuOpts *param; |
2420 |
static QemuOptsList resize_options = {
|
2421 |
.name = "resize_options",
|
2422 |
.head = QTAILQ_HEAD_INITIALIZER(resize_options.head), |
2423 |
.desc = { |
2424 |
{ |
2425 |
.name = BLOCK_OPT_SIZE, |
2426 |
.type = QEMU_OPT_SIZE, |
2427 |
.help = "Virtual disk size"
|
2428 |
}, { |
2429 |
/* end of list */
|
2430 |
} |
2431 |
}, |
2432 |
}; |
2433 |
|
2434 |
/* Remove size from argv manually so that negative numbers are not treated
|
2435 |
* as options by getopt. */
|
2436 |
if (argc < 3) { |
2437 |
help(); |
2438 |
return 1; |
2439 |
} |
2440 |
|
2441 |
size = argv[--argc]; |
2442 |
|
2443 |
/* Parse getopt arguments */
|
2444 |
fmt = NULL;
|
2445 |
for(;;) {
|
2446 |
c = getopt(argc, argv, "f:hq");
|
2447 |
if (c == -1) { |
2448 |
break;
|
2449 |
} |
2450 |
switch(c) {
|
2451 |
case '?': |
2452 |
case 'h': |
2453 |
help(); |
2454 |
break;
|
2455 |
case 'f': |
2456 |
fmt = optarg; |
2457 |
break;
|
2458 |
case 'q': |
2459 |
quiet = true;
|
2460 |
break;
|
2461 |
} |
2462 |
} |
2463 |
if (optind != argc - 1) { |
2464 |
help(); |
2465 |
} |
2466 |
filename = argv[optind++]; |
2467 |
|
2468 |
/* Choose grow, shrink, or absolute resize mode */
|
2469 |
switch (size[0]) { |
2470 |
case '+': |
2471 |
relative = 1;
|
2472 |
size++; |
2473 |
break;
|
2474 |
case '-': |
2475 |
relative = -1;
|
2476 |
size++; |
2477 |
break;
|
2478 |
default:
|
2479 |
relative = 0;
|
2480 |
break;
|
2481 |
} |
2482 |
|
2483 |
/* Parse size */
|
2484 |
param = qemu_opts_create_nofail(&resize_options); |
2485 |
if (qemu_opt_set(param, BLOCK_OPT_SIZE, size)) {
|
2486 |
/* Error message already printed when size parsing fails */
|
2487 |
ret = -1;
|
2488 |
qemu_opts_del(param); |
2489 |
goto out;
|
2490 |
} |
2491 |
n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0);
|
2492 |
qemu_opts_del(param); |
2493 |
|
2494 |
bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR, true, quiet);
|
2495 |
if (!bs) {
|
2496 |
ret = -1;
|
2497 |
goto out;
|
2498 |
} |
2499 |
|
2500 |
if (relative) {
|
2501 |
total_size = bdrv_getlength(bs) + n * relative; |
2502 |
} else {
|
2503 |
total_size = n; |
2504 |
} |
2505 |
if (total_size <= 0) { |
2506 |
error_report("New image size must be positive");
|
2507 |
ret = -1;
|
2508 |
goto out;
|
2509 |
} |
2510 |
|
2511 |
ret = bdrv_truncate(bs, total_size); |
2512 |
switch (ret) {
|
2513 |
case 0: |
2514 |
qprintf(quiet, "Image resized.\n");
|
2515 |
break;
|
2516 |
case -ENOTSUP:
|
2517 |
error_report("This image does not support resize");
|
2518 |
break;
|
2519 |
case -EACCES:
|
2520 |
error_report("Image is read-only");
|
2521 |
break;
|
2522 |
default:
|
2523 |
error_report("Error resizing image (%d)", -ret);
|
2524 |
break;
|
2525 |
} |
2526 |
out:
|
2527 |
if (bs) {
|
2528 |
bdrv_unref(bs); |
2529 |
} |
2530 |
if (ret) {
|
2531 |
return 1; |
2532 |
} |
2533 |
return 0; |
2534 |
} |
2535 |
|
2536 |
static int img_amend(int argc, char **argv) |
2537 |
{ |
2538 |
int c, ret = 0; |
2539 |
char *options = NULL; |
2540 |
QEMUOptionParameter *create_options = NULL, *options_param = NULL; |
2541 |
const char *fmt = NULL, *filename; |
2542 |
bool quiet = false; |
2543 |
BlockDriverState *bs = NULL;
|
2544 |
|
2545 |
for (;;) {
|
2546 |
c = getopt(argc, argv, "hqf:o:");
|
2547 |
if (c == -1) { |
2548 |
break;
|
2549 |
} |
2550 |
|
2551 |
switch (c) {
|
2552 |
case 'h': |
2553 |
case '?': |
2554 |
help(); |
2555 |
break;
|
2556 |
case 'o': |
2557 |
options = optarg; |
2558 |
break;
|
2559 |
case 'f': |
2560 |
fmt = optarg; |
2561 |
break;
|
2562 |
case 'q': |
2563 |
quiet = true;
|
2564 |
break;
|
2565 |
} |
2566 |
} |
2567 |
|
2568 |
if (optind != argc - 1) { |
2569 |
help(); |
2570 |
} |
2571 |
|
2572 |
if (!options) {
|
2573 |
help(); |
2574 |
} |
2575 |
|
2576 |
filename = argv[argc - 1];
|
2577 |
|
2578 |
bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR, true, quiet);
|
2579 |
if (!bs) {
|
2580 |
error_report("Could not open image '%s'", filename);
|
2581 |
ret = -1;
|
2582 |
goto out;
|
2583 |
} |
2584 |
|
2585 |
fmt = bs->drv->format_name; |
2586 |
|
2587 |
if (is_help_option(options)) {
|
2588 |
ret = print_block_option_help(filename, fmt); |
2589 |
goto out;
|
2590 |
} |
2591 |
|
2592 |
create_options = append_option_parameters(create_options, |
2593 |
bs->drv->create_options); |
2594 |
options_param = parse_option_parameters(options, create_options, |
2595 |
options_param); |
2596 |
if (options_param == NULL) { |
2597 |
error_report("Invalid options for file format '%s'", fmt);
|
2598 |
ret = -1;
|
2599 |
goto out;
|
2600 |
} |
2601 |
|
2602 |
ret = bdrv_amend_options(bs, options_param); |
2603 |
if (ret < 0) { |
2604 |
error_report("Error while amending options: %s", strerror(-ret));
|
2605 |
goto out;
|
2606 |
} |
2607 |
|
2608 |
out:
|
2609 |
if (bs) {
|
2610 |
bdrv_unref(bs); |
2611 |
} |
2612 |
free_option_parameters(create_options); |
2613 |
free_option_parameters(options_param); |
2614 |
if (ret) {
|
2615 |
return 1; |
2616 |
} |
2617 |
return 0; |
2618 |
} |
2619 |
|
2620 |
static const img_cmd_t img_cmds[] = { |
2621 |
#define DEF(option, callback, arg_string) \
|
2622 |
{ option, callback }, |
2623 |
#include "qemu-img-cmds.h" |
2624 |
#undef DEF
|
2625 |
#undef GEN_DOCS
|
2626 |
{ NULL, NULL, }, |
2627 |
}; |
2628 |
|
2629 |
int main(int argc, char **argv) |
2630 |
{ |
2631 |
const img_cmd_t *cmd;
|
2632 |
const char *cmdname; |
2633 |
|
2634 |
#ifdef CONFIG_POSIX
|
2635 |
signal(SIGPIPE, SIG_IGN); |
2636 |
#endif
|
2637 |
|
2638 |
error_set_progname(argv[0]);
|
2639 |
|
2640 |
qemu_init_main_loop(); |
2641 |
bdrv_init(); |
2642 |
if (argc < 2) |
2643 |
help(); |
2644 |
cmdname = argv[1];
|
2645 |
argc--; argv++; |
2646 |
|
2647 |
/* find the command */
|
2648 |
for(cmd = img_cmds; cmd->name != NULL; cmd++) { |
2649 |
if (!strcmp(cmdname, cmd->name)) {
|
2650 |
return cmd->handler(argc, argv);
|
2651 |
} |
2652 |
} |
2653 |
|
2654 |
/* not found */
|
2655 |
help(); |
2656 |
return 0; |
2657 |
} |