blob: fcdfb6719e45f77ea56b3aca7e382ec7421977df [file] [log] [blame]
bellardea2384d2004-08-01 21:59:26 +00001/*
bellardfb43f4d2006-08-07 21:34:46 +00002 * QEMU disk image utility
ths5fafdf22007-09-16 21:08:06 +00003 *
bellard68d0f702008-01-06 17:21:48 +00004 * Copyright (c) 2003-2008 Fabrice Bellard
ths5fafdf22007-09-16 21:08:06 +00005 *
bellardea2384d2004-08-01 21:59:26 +00006 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
Benoît Canetc054b3f2012-09-05 13:09:02 +020024#include "qapi-visit.h"
25#include "qapi/qmp-output-visitor.h"
Paolo Bonzini7b1b5d12012-12-17 18:19:43 +010026#include "qapi/qmp/qjson.h"
pbrookfaf07962007-11-11 02:51:17 +000027#include "qemu-common.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010028#include "qemu/option.h"
29#include "qemu/error-report.h"
30#include "qemu/osdep.h"
Paolo Bonzini9c17d612012-12-17 18:20:04 +010031#include "sysemu/sysemu.h"
Markus Armbruster26f54e92014-10-07 13:59:04 +020032#include "sysemu/block-backend.h"
Paolo Bonzini737e1502012-12-17 18:19:44 +010033#include "block/block_int.h"
Max Reitzd4a32382014-10-24 15:57:37 +020034#include "block/blockjob.h"
Wenchao Xiaf364ec62013-05-25 11:09:44 +080035#include "block/qapi.h"
Benoît Canetc054b3f2012-09-05 13:09:02 +020036#include <getopt.h>
bellarde8445332006-06-14 15:32:10 +000037
Don Slutz61979a62015-01-09 10:17:35 -050038#define QEMU_IMG_VERSION "qemu-img version " QEMU_VERSION QEMU_PKGVERSION \
Jeff Cody5f6979c2014-04-28 14:37:18 -040039 ", Copyright (c) 2004-2008 Fabrice Bellard\n"
40
Anthony Liguoric227f092009-10-01 16:12:16 -050041typedef struct img_cmd_t {
Stuart Brady153859b2009-06-07 00:42:17 +010042 const char *name;
43 int (*handler)(int argc, char **argv);
Anthony Liguoric227f092009-10-01 16:12:16 -050044} img_cmd_t;
Stuart Brady153859b2009-06-07 00:42:17 +010045
Federico Simoncelli8599ea42013-01-28 06:59:47 -050046enum {
47 OPTION_OUTPUT = 256,
48 OPTION_BACKING_CHAIN = 257,
49};
50
51typedef enum OutputFormat {
52 OFORMAT_JSON,
53 OFORMAT_HUMAN,
54} OutputFormat;
55
aurel32137519c2008-11-30 19:12:49 +000056/* Default to cache=writeback as data integrity is not important for qemu-tcg. */
Stefan Hajnocziadfe0782010-04-13 10:29:35 +010057#define BDRV_O_FLAGS BDRV_O_CACHE_WB
Federico Simoncelli661a0f72011-06-20 12:48:19 -040058#define BDRV_DEFAULT_CACHE "writeback"
aurel32137519c2008-11-30 19:12:49 +000059
Stefan Hajnoczi00c6d402014-08-27 12:08:56 +010060static void format_print(void *opaque, const char *name)
bellardea2384d2004-08-01 21:59:26 +000061{
Stefan Hajnoczi00c6d402014-08-27 12:08:56 +010062 printf(" %s", name);
bellardea2384d2004-08-01 21:59:26 +000063}
64
Fam Zhengac1307a2014-04-22 13:36:11 +080065static void QEMU_NORETURN GCC_FMT_ATTR(1, 2) error_exit(const char *fmt, ...)
66{
67 va_list ap;
68
69 error_printf("qemu-img: ");
70
71 va_start(ap, fmt);
72 error_vprintf(fmt, ap);
73 va_end(ap);
74
75 error_printf("\nTry 'qemu-img --help' for more information\n");
76 exit(EXIT_FAILURE);
77}
78
blueswir1d2c639d2009-01-24 18:19:25 +000079/* Please keep in synch with qemu-img.texi */
Fam Zhengac1307a2014-04-22 13:36:11 +080080static void QEMU_NORETURN help(void)
bellardea2384d2004-08-01 21:59:26 +000081{
Paolo Bonzinie00291c2010-02-04 16:49:56 +010082 const char *help_msg =
Jeff Cody5f6979c2014-04-28 14:37:18 -040083 QEMU_IMG_VERSION
malc3f020d72010-02-08 12:04:56 +030084 "usage: qemu-img command [command options]\n"
85 "QEMU disk image utility\n"
86 "\n"
87 "Command syntax:\n"
Stuart Brady153859b2009-06-07 00:42:17 +010088#define DEF(option, callback, arg_string) \
89 " " arg_string "\n"
90#include "qemu-img-cmds.h"
91#undef DEF
92#undef GEN_DOCS
malc3f020d72010-02-08 12:04:56 +030093 "\n"
94 "Command parameters:\n"
95 " 'filename' is a disk image filename\n"
96 " 'fmt' is the disk image format. It is guessed automatically in most cases\n"
Federico Simoncelli661a0f72011-06-20 12:48:19 -040097 " 'cache' is the cache mode used to write the output disk image, the valid\n"
Liu Yuan80ccf932012-04-20 17:10:56 +080098 " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n"
99 " 'directsync' and 'unsafe' (default for convert)\n"
Stefan Hajnoczibb87fdf2014-09-02 11:01:02 +0100100 " 'src_cache' is the cache mode used to read input disk images, the valid\n"
101 " options are the same as for the 'cache' option\n"
malc3f020d72010-02-08 12:04:56 +0300102 " 'size' is the disk image size in bytes. Optional suffixes\n"
Kevin Wolf5e009842013-06-05 14:19:27 +0200103 " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n"
104 " 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n"
105 " supported. 'b' is ignored.\n"
malc3f020d72010-02-08 12:04:56 +0300106 " 'output_filename' is the destination disk image filename\n"
107 " 'output_fmt' is the destination format\n"
108 " 'options' is a comma separated list of format specific options in a\n"
109 " name=value format. Use -o ? for an overview of the options supported by the\n"
110 " used format\n"
Wenchao Xiaef806542013-12-04 17:10:57 +0800111 " 'snapshot_param' is param used for internal snapshot, format\n"
112 " is 'snapshot.id=[ID],snapshot.name=[NAME]', or\n"
113 " '[ID_OR_NAME]'\n"
114 " 'snapshot_id_or_name' is deprecated, use 'snapshot_param'\n"
115 " instead\n"
malc3f020d72010-02-08 12:04:56 +0300116 " '-c' indicates that target image must be compressed (qcow format only)\n"
117 " '-u' enables unsafe rebasing. It is assumed that old and new backing file\n"
118 " match exactly. The image doesn't need a working backing file before\n"
119 " rebasing in this case (useful for renaming the backing file)\n"
120 " '-h' with or without a command shows this help and lists the supported formats\n"
Jes Sorensen6b837bc2011-03-30 14:16:25 +0200121 " '-p' show progress of command (only certain commands)\n"
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100122 " '-q' use Quiet mode - do not print any output (except errors)\n"
Peter Lieven11b66992013-10-24 12:07:05 +0200123 " '-S' indicates the consecutive number of bytes (defaults to 4k) that must\n"
124 " contain only zeros for qemu-img to create a sparse image during\n"
125 " conversion. If the number of bytes is 0, the source will not be scanned for\n"
126 " unallocated or zero sectors, and the destination image will always be\n"
127 " fully allocated\n"
Benoît Canetc054b3f2012-09-05 13:09:02 +0200128 " '--output' takes the format in which the output must be done (human or json)\n"
Alexandre Derumierb2e10492013-09-02 19:07:24 +0100129 " '-n' skips the target volume creation (useful if the volume is created\n"
130 " prior to running qemu-img)\n"
malc3f020d72010-02-08 12:04:56 +0300131 "\n"
Kevin Wolf4534ff52012-05-11 16:07:02 +0200132 "Parameters to check subcommand:\n"
133 " '-r' tries to repair any inconsistencies that are found during the check.\n"
134 " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n"
135 " kinds of errors, with a higher risk of choosing the wrong fix or\n"
Stefan Weil0546b8c2012-08-10 22:03:25 +0200136 " hiding corruption that has already occurred.\n"
Kevin Wolf4534ff52012-05-11 16:07:02 +0200137 "\n"
malc3f020d72010-02-08 12:04:56 +0300138 "Parameters to snapshot subcommand:\n"
139 " 'snapshot' is the name of the snapshot to create, apply or delete\n"
140 " '-a' applies a snapshot (revert disk to saved state)\n"
141 " '-c' creates a snapshot\n"
142 " '-d' deletes a snapshot\n"
Miroslav Rezaninad14ed182013-02-13 09:09:41 +0100143 " '-l' lists all snapshots in the given image\n"
144 "\n"
145 "Parameters to compare subcommand:\n"
146 " '-f' first image format\n"
147 " '-F' second image format\n"
148 " '-s' run in Strict mode - fail on different image size or sector allocation\n";
Paolo Bonzinie00291c2010-02-04 16:49:56 +0100149
150 printf("%s\nSupported formats:", help_msg);
Stefan Hajnoczi00c6d402014-08-27 12:08:56 +0100151 bdrv_iterate_format(format_print, NULL);
bellardea2384d2004-08-01 21:59:26 +0000152 printf("\n");
Fam Zhengac1307a2014-04-22 13:36:11 +0800153 exit(EXIT_SUCCESS);
bellardea2384d2004-08-01 21:59:26 +0000154}
155
Stefan Weil7c30f652013-06-16 17:01:05 +0200156static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...)
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100157{
158 int ret = 0;
159 if (!quiet) {
160 va_list args;
161 va_start(args, fmt);
162 ret = vprintf(fmt, args);
163 va_end(args);
164 }
165 return ret;
166}
167
bellardea2384d2004-08-01 21:59:26 +0000168#if defined(WIN32)
169/* XXX: put correct support for win32 */
170static int read_password(char *buf, int buf_size)
171{
172 int c, i;
Chen Gangfdcf6e62014-07-06 16:43:33 +0800173
bellardea2384d2004-08-01 21:59:26 +0000174 printf("Password: ");
175 fflush(stdout);
176 i = 0;
177 for(;;) {
178 c = getchar();
Chen Gangfdcf6e62014-07-06 16:43:33 +0800179 if (c < 0) {
180 buf[i] = '\0';
181 return -1;
182 } else if (c == '\n') {
bellardea2384d2004-08-01 21:59:26 +0000183 break;
Chen Gangfdcf6e62014-07-06 16:43:33 +0800184 } else if (i < (buf_size - 1)) {
bellardea2384d2004-08-01 21:59:26 +0000185 buf[i++] = c;
Chen Gangfdcf6e62014-07-06 16:43:33 +0800186 }
bellardea2384d2004-08-01 21:59:26 +0000187 }
188 buf[i] = '\0';
189 return 0;
190}
191
192#else
193
194#include <termios.h>
195
196static struct termios oldtty;
197
198static void term_exit(void)
199{
200 tcsetattr (0, TCSANOW, &oldtty);
201}
202
203static void term_init(void)
204{
205 struct termios tty;
206
207 tcgetattr (0, &tty);
208 oldtty = tty;
209
210 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
211 |INLCR|IGNCR|ICRNL|IXON);
212 tty.c_oflag |= OPOST;
213 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
214 tty.c_cflag &= ~(CSIZE|PARENB);
215 tty.c_cflag |= CS8;
216 tty.c_cc[VMIN] = 1;
217 tty.c_cc[VTIME] = 0;
ths3b46e622007-09-17 08:09:54 +0000218
bellardea2384d2004-08-01 21:59:26 +0000219 tcsetattr (0, TCSANOW, &tty);
220
221 atexit(term_exit);
222}
223
pbrook3f379ab2007-11-11 03:33:13 +0000224static int read_password(char *buf, int buf_size)
bellardea2384d2004-08-01 21:59:26 +0000225{
226 uint8_t ch;
227 int i, ret;
228
229 printf("password: ");
230 fflush(stdout);
231 term_init();
232 i = 0;
233 for(;;) {
234 ret = read(0, &ch, 1);
235 if (ret == -1) {
236 if (errno == EAGAIN || errno == EINTR) {
237 continue;
238 } else {
bellardea2384d2004-08-01 21:59:26 +0000239 break;
240 }
241 } else if (ret == 0) {
242 ret = -1;
243 break;
244 } else {
245 if (ch == '\r') {
246 ret = 0;
247 break;
248 }
249 if (i < (buf_size - 1))
250 buf[i++] = ch;
251 }
252 }
253 term_exit();
254 buf[i] = '\0';
255 printf("\n");
256 return ret;
257}
258#endif
259
Jes Sorensen4ac8aac2010-12-06 15:25:38 +0100260static int print_block_option_help(const char *filename, const char *fmt)
261{
262 BlockDriver *drv, *proto_drv;
Chunyan Liu83d05212014-06-05 17:20:51 +0800263 QemuOptsList *create_opts = NULL;
Max Reitzb65a5e12015-02-05 13:58:12 -0500264 Error *local_err = NULL;
Jes Sorensen4ac8aac2010-12-06 15:25:38 +0100265
266 /* Find driver and parse its options */
267 drv = bdrv_find_format(fmt);
268 if (!drv) {
Jes Sorensen15654a62010-12-16 14:31:53 +0100269 error_report("Unknown file format '%s'", fmt);
Jes Sorensen4ac8aac2010-12-06 15:25:38 +0100270 return 1;
271 }
272
Chunyan Liuc282e1f2014-06-05 17:21:11 +0800273 create_opts = qemu_opts_append(create_opts, drv->create_opts);
Kevin Wolfa283cb62014-02-21 16:24:07 +0100274 if (filename) {
Max Reitzb65a5e12015-02-05 13:58:12 -0500275 proto_drv = bdrv_find_protocol(filename, true, &local_err);
Kevin Wolfa283cb62014-02-21 16:24:07 +0100276 if (!proto_drv) {
Max Reitzb65a5e12015-02-05 13:58:12 -0500277 qerror_report_err(local_err);
278 error_free(local_err);
Chunyan Liu83d05212014-06-05 17:20:51 +0800279 qemu_opts_free(create_opts);
Kevin Wolfa283cb62014-02-21 16:24:07 +0100280 return 1;
281 }
Chunyan Liuc282e1f2014-06-05 17:21:11 +0800282 create_opts = qemu_opts_append(create_opts, proto_drv->create_opts);
Kevin Wolfa283cb62014-02-21 16:24:07 +0100283 }
284
Chunyan Liu83d05212014-06-05 17:20:51 +0800285 qemu_opts_print_help(create_opts);
286 qemu_opts_free(create_opts);
Jes Sorensen4ac8aac2010-12-06 15:25:38 +0100287 return 0;
288}
289
Markus Armbruster7e7d56d2014-10-07 13:59:05 +0200290static BlockBackend *img_open(const char *id, const char *filename,
291 const char *fmt, int flags,
292 bool require_io, bool quiet)
bellard75c23802004-08-27 21:28:58 +0000293{
Markus Armbruster7e7d56d2014-10-07 13:59:05 +0200294 BlockBackend *blk;
bellard75c23802004-08-27 21:28:58 +0000295 BlockDriverState *bs;
bellard75c23802004-08-27 21:28:58 +0000296 char password[256];
Max Reitz34b5d2c2013-09-05 14:45:29 +0200297 Error *local_err = NULL;
Max Reitz5bd31322015-02-05 13:58:16 -0500298 QDict *options = NULL;
Kevin Wolfad717132010-12-16 15:37:41 +0100299
bellard75c23802004-08-27 21:28:58 +0000300 if (fmt) {
Max Reitz5bd31322015-02-05 13:58:16 -0500301 options = qdict_new();
302 qdict_put(options, "driver", qstring_from_str(fmt));
bellard75c23802004-08-27 21:28:58 +0000303 }
Kevin Wolfb9eaf9e2011-02-09 11:25:53 +0100304
Max Reitz5bd31322015-02-05 13:58:16 -0500305 blk = blk_new_open(id, filename, NULL, options, flags, &local_err);
306 if (!blk) {
Max Reitz34b5d2c2013-09-05 14:45:29 +0200307 error_report("Could not open '%s': %s", filename,
308 error_get_pretty(local_err));
309 error_free(local_err);
MORITA Kazutakac2abcce2010-06-21 04:26:35 +0900310 goto fail;
bellard75c23802004-08-27 21:28:58 +0000311 }
Kevin Wolfb9eaf9e2011-02-09 11:25:53 +0100312
Max Reitz5bd31322015-02-05 13:58:16 -0500313 bs = blk_bs(blk);
Daniel P. Berrangef0536bb2012-09-10 12:11:31 +0100314 if (bdrv_is_encrypted(bs) && require_io) {
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100315 qprintf(quiet, "Disk image '%s' is encrypted.\n", filename);
MORITA Kazutakac2abcce2010-06-21 04:26:35 +0900316 if (read_password(password, sizeof(password)) < 0) {
Jes Sorensen15654a62010-12-16 14:31:53 +0100317 error_report("No password given");
MORITA Kazutakac2abcce2010-06-21 04:26:35 +0900318 goto fail;
319 }
320 if (bdrv_set_key(bs, password) < 0) {
Jes Sorensen15654a62010-12-16 14:31:53 +0100321 error_report("invalid password");
MORITA Kazutakac2abcce2010-06-21 04:26:35 +0900322 goto fail;
323 }
bellard75c23802004-08-27 21:28:58 +0000324 }
Markus Armbruster7e7d56d2014-10-07 13:59:05 +0200325 return blk;
MORITA Kazutakac2abcce2010-06-21 04:26:35 +0900326fail:
Markus Armbruster7e7d56d2014-10-07 13:59:05 +0200327 blk_unref(blk);
MORITA Kazutakac2abcce2010-06-21 04:26:35 +0900328 return NULL;
bellard75c23802004-08-27 21:28:58 +0000329}
330
Chunyan Liu83d05212014-06-05 17:20:51 +0800331static int add_old_style_options(const char *fmt, QemuOpts *opts,
Jes Sorenseneec77d92010-12-07 17:44:34 +0100332 const char *base_filename,
333 const char *base_fmt)
Kevin Wolfefa84d42009-05-18 16:42:12 +0200334{
Kevin Wolfefa84d42009-05-18 16:42:12 +0200335 if (base_filename) {
Chunyan Liu83d05212014-06-05 17:20:51 +0800336 if (qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename)) {
Jes Sorensen15654a62010-12-16 14:31:53 +0100337 error_report("Backing file not supported for file format '%s'",
338 fmt);
MORITA Kazutakac2abcce2010-06-21 04:26:35 +0900339 return -1;
Kevin Wolfefa84d42009-05-18 16:42:12 +0200340 }
341 }
342 if (base_fmt) {
Chunyan Liu83d05212014-06-05 17:20:51 +0800343 if (qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt)) {
Jes Sorensen15654a62010-12-16 14:31:53 +0100344 error_report("Backing file format not supported for file "
345 "format '%s'", fmt);
MORITA Kazutakac2abcce2010-06-21 04:26:35 +0900346 return -1;
Kevin Wolfefa84d42009-05-18 16:42:12 +0200347 }
348 }
MORITA Kazutakac2abcce2010-06-21 04:26:35 +0900349 return 0;
Kevin Wolfefa84d42009-05-18 16:42:12 +0200350}
351
bellardea2384d2004-08-01 21:59:26 +0000352static int img_create(int argc, char **argv)
353{
Luiz Capitulinoa9300912012-11-30 10:52:06 -0200354 int c;
Jes Sorensen1da7cfb2010-12-09 14:17:25 +0100355 uint64_t img_size = -1;
bellardea2384d2004-08-01 21:59:26 +0000356 const char *fmt = "raw";
aliguori9230eaf2009-03-28 17:55:19 +0000357 const char *base_fmt = NULL;
bellardea2384d2004-08-01 21:59:26 +0000358 const char *filename;
359 const char *base_filename = NULL;
Kevin Wolf9ea2ea72009-05-18 16:42:11 +0200360 char *options = NULL;
Luiz Capitulino9b375252012-11-30 10:52:05 -0200361 Error *local_err = NULL;
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100362 bool quiet = false;
ths3b46e622007-09-17 08:09:54 +0000363
bellardea2384d2004-08-01 21:59:26 +0000364 for(;;) {
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100365 c = getopt(argc, argv, "F:b:f:he6o:q");
Jes Sorensenb8fb60d2010-12-06 15:25:39 +0100366 if (c == -1) {
bellardea2384d2004-08-01 21:59:26 +0000367 break;
Jes Sorensenb8fb60d2010-12-06 15:25:39 +0100368 }
bellardea2384d2004-08-01 21:59:26 +0000369 switch(c) {
Jes Sorensenef873942010-12-06 15:25:40 +0100370 case '?':
bellardea2384d2004-08-01 21:59:26 +0000371 case 'h':
372 help();
373 break;
aliguori9230eaf2009-03-28 17:55:19 +0000374 case 'F':
375 base_fmt = optarg;
376 break;
bellardea2384d2004-08-01 21:59:26 +0000377 case 'b':
378 base_filename = optarg;
379 break;
380 case 'f':
381 fmt = optarg;
382 break;
383 case 'e':
Markus Armbruster9d42e152011-06-22 14:03:55 +0200384 error_report("option -e is deprecated, please use \'-o "
Jes Sorenseneec77d92010-12-07 17:44:34 +0100385 "encryption\' instead!");
Kevin Wolf77386bf2014-02-21 16:24:04 +0100386 goto fail;
thsd8871c52007-10-24 16:11:42 +0000387 case '6':
Markus Armbruster9d42e152011-06-22 14:03:55 +0200388 error_report("option -6 is deprecated, please use \'-o "
Jes Sorenseneec77d92010-12-07 17:44:34 +0100389 "compat6\' instead!");
Kevin Wolf77386bf2014-02-21 16:24:04 +0100390 goto fail;
Kevin Wolf9ea2ea72009-05-18 16:42:11 +0200391 case 'o':
Kevin Wolf77386bf2014-02-21 16:24:04 +0100392 if (!is_valid_option_list(optarg)) {
393 error_report("Invalid option list: %s", optarg);
394 goto fail;
395 }
396 if (!options) {
397 options = g_strdup(optarg);
398 } else {
399 char *old_options = options;
400 options = g_strdup_printf("%s,%s", options, optarg);
401 g_free(old_options);
402 }
Kevin Wolf9ea2ea72009-05-18 16:42:11 +0200403 break;
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100404 case 'q':
405 quiet = true;
406 break;
bellardea2384d2004-08-01 21:59:26 +0000407 }
408 }
aliguori9230eaf2009-03-28 17:55:19 +0000409
MORITA Kazutakab50cbab2010-05-26 11:35:36 +0900410 /* Get the filename */
Kevin Wolfa283cb62014-02-21 16:24:07 +0100411 filename = (optind < argc) ? argv[optind] : NULL;
412 if (options && has_help_option(options)) {
413 g_free(options);
414 return print_block_option_help(filename, fmt);
415 }
416
Jes Sorensenb8fb60d2010-12-06 15:25:39 +0100417 if (optind >= argc) {
Fam Zhengac1307a2014-04-22 13:36:11 +0800418 error_exit("Expecting image file name");
Jes Sorensenb8fb60d2010-12-06 15:25:39 +0100419 }
Kevin Wolfa283cb62014-02-21 16:24:07 +0100420 optind++;
MORITA Kazutakab50cbab2010-05-26 11:35:36 +0900421
Jes Sorensen1da7cfb2010-12-09 14:17:25 +0100422 /* Get image size, if specified */
423 if (optind < argc) {
Jes Sorensen70b4f4b2011-01-05 11:41:02 +0100424 int64_t sval;
Markus Armbrustere36b3692011-11-22 09:46:05 +0100425 char *end;
426 sval = strtosz_suffix(argv[optind++], &end, STRTOSZ_DEFSUFFIX_B);
427 if (sval < 0 || *end) {
liguang79443392012-12-17 09:49:23 +0800428 if (sval == -ERANGE) {
429 error_report("Image size must be less than 8 EiB!");
430 } else {
431 error_report("Invalid image size specified! You may use k, M, "
Kevin Wolf5e009842013-06-05 14:19:27 +0200432 "G, T, P or E suffixes for ");
433 error_report("kilobytes, megabytes, gigabytes, terabytes, "
434 "petabytes and exabytes.");
liguang79443392012-12-17 09:49:23 +0800435 }
Kevin Wolf77386bf2014-02-21 16:24:04 +0100436 goto fail;
Jes Sorensen1da7cfb2010-12-09 14:17:25 +0100437 }
438 img_size = (uint64_t)sval;
439 }
Kevin Wolffc11eb22013-08-05 10:53:04 +0200440 if (optind != argc) {
Fam Zhengac1307a2014-04-22 13:36:11 +0800441 error_exit("Unexpected argument: %s", argv[optind]);
Kevin Wolffc11eb22013-08-05 10:53:04 +0200442 }
Jes Sorensen1da7cfb2010-12-09 14:17:25 +0100443
Luiz Capitulino9b375252012-11-30 10:52:05 -0200444 bdrv_img_create(filename, fmt, base_filename, base_fmt,
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100445 options, img_size, BDRV_O_FLAGS, &local_err, quiet);
Markus Armbruster84d18f02014-01-30 15:07:28 +0100446 if (local_err) {
Max Reitzb70d8c22013-09-06 16:51:03 +0200447 error_report("%s: %s", filename, error_get_pretty(local_err));
Luiz Capitulino9b375252012-11-30 10:52:05 -0200448 error_free(local_err);
Kevin Wolf77386bf2014-02-21 16:24:04 +0100449 goto fail;
MORITA Kazutakac2abcce2010-06-21 04:26:35 +0900450 }
Luiz Capitulinoa9300912012-11-30 10:52:06 -0200451
Kevin Wolf77386bf2014-02-21 16:24:04 +0100452 g_free(options);
bellardea2384d2004-08-01 21:59:26 +0000453 return 0;
Kevin Wolf77386bf2014-02-21 16:24:04 +0100454
455fail:
456 g_free(options);
457 return 1;
bellardea2384d2004-08-01 21:59:26 +0000458}
459
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100460static void dump_json_image_check(ImageCheck *check, bool quiet)
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500461{
Markus Armbruster4399c432014-04-25 16:50:32 +0200462 Error *local_err = NULL;
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500463 QString *str;
464 QmpOutputVisitor *ov = qmp_output_visitor_new();
465 QObject *obj;
466 visit_type_ImageCheck(qmp_output_get_visitor(ov),
Markus Armbruster4399c432014-04-25 16:50:32 +0200467 &check, NULL, &local_err);
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500468 obj = qmp_output_get_qobject(ov);
469 str = qobject_to_json_pretty(obj);
470 assert(str != NULL);
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100471 qprintf(quiet, "%s\n", qstring_get_str(str));
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500472 qobject_decref(obj);
473 qmp_output_visitor_cleanup(ov);
474 QDECREF(str);
475}
476
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100477static void dump_human_image_check(ImageCheck *check, bool quiet)
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500478{
479 if (!(check->corruptions || check->leaks || check->check_errors)) {
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100480 qprintf(quiet, "No errors were found on the image.\n");
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500481 } else {
482 if (check->corruptions) {
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100483 qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n"
484 "Data may be corrupted, or further writes to the image "
485 "may corrupt it.\n",
486 check->corruptions);
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500487 }
488
489 if (check->leaks) {
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100490 qprintf(quiet,
491 "\n%" PRId64 " leaked clusters were found on the image.\n"
492 "This means waste of disk space, but no harm to data.\n",
493 check->leaks);
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500494 }
495
496 if (check->check_errors) {
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100497 qprintf(quiet,
498 "\n%" PRId64
499 " internal errors have occurred during the check.\n",
500 check->check_errors);
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500501 }
502 }
503
504 if (check->total_clusters != 0 && check->allocated_clusters != 0) {
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100505 qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, "
506 "%0.2f%% fragmented, %0.2f%% compressed clusters\n",
507 check->allocated_clusters, check->total_clusters,
508 check->allocated_clusters * 100.0 / check->total_clusters,
509 check->fragmented_clusters * 100.0 / check->allocated_clusters,
510 check->compressed_clusters * 100.0 /
511 check->allocated_clusters);
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500512 }
513
514 if (check->image_end_offset) {
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100515 qprintf(quiet,
516 "Image end offset: %" PRId64 "\n", check->image_end_offset);
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500517 }
518}
519
520static int collect_image_check(BlockDriverState *bs,
521 ImageCheck *check,
522 const char *filename,
523 const char *fmt,
524 int fix)
525{
526 int ret;
527 BdrvCheckResult result;
528
529 ret = bdrv_check(bs, &result, fix);
530 if (ret < 0) {
531 return ret;
532 }
533
534 check->filename = g_strdup(filename);
535 check->format = g_strdup(bdrv_get_format_name(bs));
536 check->check_errors = result.check_errors;
537 check->corruptions = result.corruptions;
538 check->has_corruptions = result.corruptions != 0;
539 check->leaks = result.leaks;
540 check->has_leaks = result.leaks != 0;
541 check->corruptions_fixed = result.corruptions_fixed;
542 check->has_corruptions_fixed = result.corruptions != 0;
543 check->leaks_fixed = result.leaks_fixed;
544 check->has_leaks_fixed = result.leaks != 0;
545 check->image_end_offset = result.image_end_offset;
546 check->has_image_end_offset = result.image_end_offset != 0;
547 check->total_clusters = result.bfi.total_clusters;
548 check->has_total_clusters = result.bfi.total_clusters != 0;
549 check->allocated_clusters = result.bfi.allocated_clusters;
550 check->has_allocated_clusters = result.bfi.allocated_clusters != 0;
551 check->fragmented_clusters = result.bfi.fragmented_clusters;
552 check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0;
Stefan Hajnoczie6439d72013-02-07 17:15:04 +0100553 check->compressed_clusters = result.bfi.compressed_clusters;
554 check->has_compressed_clusters = result.bfi.compressed_clusters != 0;
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500555
556 return 0;
557}
558
Kevin Wolfe076f332010-06-29 11:43:13 +0200559/*
560 * Checks an image for consistency. Exit codes:
561 *
Max Reitzd6635c42014-06-02 22:15:21 +0200562 * 0 - Check completed, image is good
563 * 1 - Check not completed because of internal errors
564 * 2 - Check completed, image is corrupted
565 * 3 - Check completed, image has leaked clusters, but is good otherwise
566 * 63 - Checks are not supported by the image format
Kevin Wolfe076f332010-06-29 11:43:13 +0200567 */
aliguori15859692009-04-21 23:11:53 +0000568static int img_check(int argc, char **argv)
569{
570 int c, ret;
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500571 OutputFormat output_format = OFORMAT_HUMAN;
Max Reitz40055952014-07-22 22:58:42 +0200572 const char *filename, *fmt, *output, *cache;
Markus Armbruster26f54e92014-10-07 13:59:04 +0200573 BlockBackend *blk;
aliguori15859692009-04-21 23:11:53 +0000574 BlockDriverState *bs;
Kevin Wolf4534ff52012-05-11 16:07:02 +0200575 int fix = 0;
Stefan Hajnoczi058f8f12012-08-09 13:05:56 +0100576 int flags = BDRV_O_FLAGS | BDRV_O_CHECK;
Markus Armbruster7e7d56d2014-10-07 13:59:05 +0200577 ImageCheck *check;
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100578 bool quiet = false;
aliguori15859692009-04-21 23:11:53 +0000579
580 fmt = NULL;
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500581 output = NULL;
Max Reitz40055952014-07-22 22:58:42 +0200582 cache = BDRV_DEFAULT_CACHE;
aliguori15859692009-04-21 23:11:53 +0000583 for(;;) {
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500584 int option_index = 0;
585 static const struct option long_options[] = {
586 {"help", no_argument, 0, 'h'},
587 {"format", required_argument, 0, 'f'},
Prasad Joshi4fd6a982014-03-25 00:08:54 +0530588 {"repair", required_argument, 0, 'r'},
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500589 {"output", required_argument, 0, OPTION_OUTPUT},
590 {0, 0, 0, 0}
591 };
Max Reitz40055952014-07-22 22:58:42 +0200592 c = getopt_long(argc, argv, "hf:r:T:q",
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500593 long_options, &option_index);
Jes Sorensenb8fb60d2010-12-06 15:25:39 +0100594 if (c == -1) {
aliguori15859692009-04-21 23:11:53 +0000595 break;
Jes Sorensenb8fb60d2010-12-06 15:25:39 +0100596 }
aliguori15859692009-04-21 23:11:53 +0000597 switch(c) {
Jes Sorensenef873942010-12-06 15:25:40 +0100598 case '?':
aliguori15859692009-04-21 23:11:53 +0000599 case 'h':
600 help();
601 break;
602 case 'f':
603 fmt = optarg;
604 break;
Kevin Wolf4534ff52012-05-11 16:07:02 +0200605 case 'r':
606 flags |= BDRV_O_RDWR;
607
608 if (!strcmp(optarg, "leaks")) {
609 fix = BDRV_FIX_LEAKS;
610 } else if (!strcmp(optarg, "all")) {
611 fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS;
612 } else {
Fam Zhengac1307a2014-04-22 13:36:11 +0800613 error_exit("Unknown option value for -r "
614 "(expecting 'leaks' or 'all'): %s", optarg);
Kevin Wolf4534ff52012-05-11 16:07:02 +0200615 }
616 break;
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500617 case OPTION_OUTPUT:
618 output = optarg;
619 break;
Max Reitz40055952014-07-22 22:58:42 +0200620 case 'T':
621 cache = optarg;
622 break;
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100623 case 'q':
624 quiet = true;
625 break;
aliguori15859692009-04-21 23:11:53 +0000626 }
627 }
Kevin Wolffc11eb22013-08-05 10:53:04 +0200628 if (optind != argc - 1) {
Fam Zhengac1307a2014-04-22 13:36:11 +0800629 error_exit("Expecting one image file name");
Jes Sorensenb8fb60d2010-12-06 15:25:39 +0100630 }
aliguori15859692009-04-21 23:11:53 +0000631 filename = argv[optind++];
632
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500633 if (output && !strcmp(output, "json")) {
634 output_format = OFORMAT_JSON;
635 } else if (output && !strcmp(output, "human")) {
636 output_format = OFORMAT_HUMAN;
637 } else if (output) {
638 error_report("--output must be used with human or json as argument.");
639 return 1;
640 }
641
Max Reitz40055952014-07-22 22:58:42 +0200642 ret = bdrv_parse_cache_flags(cache, &flags);
643 if (ret < 0) {
644 error_report("Invalid source cache option: %s", cache);
645 return 1;
646 }
647
Markus Armbruster7e7d56d2014-10-07 13:59:05 +0200648 blk = img_open("image", filename, fmt, flags, true, quiet);
649 if (!blk) {
650 return 1;
MORITA Kazutakac2abcce2010-06-21 04:26:35 +0900651 }
Markus Armbruster7e7d56d2014-10-07 13:59:05 +0200652 bs = blk_bs(blk);
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500653
654 check = g_new0(ImageCheck, 1);
655 ret = collect_image_check(bs, check, filename, fmt, fix);
Kevin Wolfe076f332010-06-29 11:43:13 +0200656
657 if (ret == -ENOTSUP) {
Max Reitz55d492d2014-05-31 21:33:30 +0200658 error_report("This image format does not support checks");
Peter Lievenfefddf92013-10-24 08:53:34 +0200659 ret = 63;
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500660 goto fail;
Kevin Wolfe076f332010-06-29 11:43:13 +0200661 }
662
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500663 if (check->corruptions_fixed || check->leaks_fixed) {
664 int corruptions_fixed, leaks_fixed;
665
666 leaks_fixed = check->leaks_fixed;
667 corruptions_fixed = check->corruptions_fixed;
668
669 if (output_format == OFORMAT_HUMAN) {
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100670 qprintf(quiet,
671 "The following inconsistencies were found and repaired:\n\n"
672 " %" PRId64 " leaked clusters\n"
673 " %" PRId64 " corruptions\n\n"
674 "Double checking the fixed image now...\n",
675 check->leaks_fixed,
676 check->corruptions_fixed);
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500677 }
678
679 ret = collect_image_check(bs, check, filename, fmt, 0);
680
681 check->leaks_fixed = leaks_fixed;
682 check->corruptions_fixed = corruptions_fixed;
Kevin Wolfccf34712012-05-11 18:16:54 +0200683 }
684
Max Reitz832390a2014-10-23 15:29:12 +0200685 if (!ret) {
686 switch (output_format) {
687 case OFORMAT_HUMAN:
688 dump_human_image_check(check, quiet);
689 break;
690 case OFORMAT_JSON:
691 dump_json_image_check(check, quiet);
692 break;
693 }
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500694 }
695
696 if (ret || check->check_errors) {
Max Reitz832390a2014-10-23 15:29:12 +0200697 if (ret) {
698 error_report("Check failed: %s", strerror(-ret));
699 } else {
700 error_report("Check failed");
701 }
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500702 ret = 1;
703 goto fail;
704 }
705
706 if (check->corruptions) {
707 ret = 2;
708 } else if (check->leaks) {
709 ret = 3;
Kevin Wolfe076f332010-06-29 11:43:13 +0200710 } else {
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500711 ret = 0;
aliguori15859692009-04-21 23:11:53 +0000712 }
713
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500714fail:
715 qapi_free_ImageCheck(check);
Markus Armbruster26f54e92014-10-07 13:59:04 +0200716 blk_unref(blk);
Federico Simoncelli8599ea42013-01-28 06:59:47 -0500717 return ret;
aliguori15859692009-04-21 23:11:53 +0000718}
719
Max Reitzd4a32382014-10-24 15:57:37 +0200720typedef struct CommonBlockJobCBInfo {
721 BlockDriverState *bs;
722 Error **errp;
723} CommonBlockJobCBInfo;
724
725static void common_block_job_cb(void *opaque, int ret)
726{
727 CommonBlockJobCBInfo *cbi = opaque;
728
729 if (ret < 0) {
730 error_setg_errno(cbi->errp, -ret, "Block job failed");
731 }
732
733 /* Drop this block job's reference */
734 bdrv_unref(cbi->bs);
735}
736
737static void run_block_job(BlockJob *job, Error **errp)
738{
739 AioContext *aio_context = bdrv_get_aio_context(job->bs);
740
741 do {
742 aio_poll(aio_context, true);
Max Reitz687fa1d2014-10-24 15:57:39 +0200743 qemu_progress_print((float)job->offset / job->len * 100.f, 0);
Max Reitzd4a32382014-10-24 15:57:37 +0200744 } while (!job->ready);
745
746 block_job_complete_sync(job, errp);
Max Reitz687fa1d2014-10-24 15:57:39 +0200747
748 /* A block job may finish instantaneously without publishing any progress,
749 * so just signal completion here */
750 qemu_progress_print(100.f, 0);
Max Reitzd4a32382014-10-24 15:57:37 +0200751}
752
bellardea2384d2004-08-01 21:59:26 +0000753static int img_commit(int argc, char **argv)
754{
Federico Simoncelli661a0f72011-06-20 12:48:19 -0400755 int c, ret, flags;
Max Reitz1b22bff2014-10-24 15:57:40 +0200756 const char *filename, *fmt, *cache, *base;
Markus Armbruster26f54e92014-10-07 13:59:04 +0200757 BlockBackend *blk;
Max Reitzd4a32382014-10-24 15:57:37 +0200758 BlockDriverState *bs, *base_bs;
Max Reitz687fa1d2014-10-24 15:57:39 +0200759 bool progress = false, quiet = false, drop = false;
Max Reitzd4a32382014-10-24 15:57:37 +0200760 Error *local_err = NULL;
761 CommonBlockJobCBInfo cbi;
bellardea2384d2004-08-01 21:59:26 +0000762
763 fmt = NULL;
Federico Simoncelli661a0f72011-06-20 12:48:19 -0400764 cache = BDRV_DEFAULT_CACHE;
Max Reitz1b22bff2014-10-24 15:57:40 +0200765 base = NULL;
bellardea2384d2004-08-01 21:59:26 +0000766 for(;;) {
Max Reitz1b22bff2014-10-24 15:57:40 +0200767 c = getopt(argc, argv, "f:ht:b:dpq");
Jes Sorensenb8fb60d2010-12-06 15:25:39 +0100768 if (c == -1) {
bellardea2384d2004-08-01 21:59:26 +0000769 break;
Jes Sorensenb8fb60d2010-12-06 15:25:39 +0100770 }
bellardea2384d2004-08-01 21:59:26 +0000771 switch(c) {
Jes Sorensenef873942010-12-06 15:25:40 +0100772 case '?':
bellardea2384d2004-08-01 21:59:26 +0000773 case 'h':
774 help();
775 break;
776 case 'f':
777 fmt = optarg;
778 break;
Federico Simoncelli661a0f72011-06-20 12:48:19 -0400779 case 't':
780 cache = optarg;
781 break;
Max Reitz1b22bff2014-10-24 15:57:40 +0200782 case 'b':
783 base = optarg;
784 /* -b implies -d */
785 drop = true;
786 break;
Max Reitz9a86fe42014-10-24 15:57:38 +0200787 case 'd':
788 drop = true;
789 break;
Max Reitz687fa1d2014-10-24 15:57:39 +0200790 case 'p':
791 progress = true;
792 break;
Miroslav Rezaninaf382d432013-02-13 09:09:40 +0100793 case 'q':
794 quiet = true;
795 break;
bellardea2384d2004-08-01 21:59:26 +0000796 }
797 }
Max Reitz687fa1d2014-10-24 15:57:39 +0200798
799 /* Progress is not shown in Quiet mode */
800 if (quiet) {
801 progress = false;
802 }
803
Kevin Wolffc11eb22013-08-05 10:53:04 +0200804 if (optind != argc - 1) {
Fam Zhengac1307a2014-04-22 13:36:11 +0800805 error_exit("Expecting one image file name");
Jes Sorensenb8fb60d2010-12-06 15:25:39 +0100806 }
bellardea2384d2004-08-01 21:59:26 +0000807 filename = argv[optind++];
808
Max Reitz9a86fe42014-10-24 15:57:38 +0200809 flags = BDRV_O_RDWR | BDRV_O_UNMAP;
Stefan Hajnoczic3993cd2011-08-04 12:26:51 +0100810 ret = bdrv_parse_cache_flags(cache, &flags);
Federico Simoncelli661a0f72011-06-20 12:48:19 -0400811 if (ret < 0) {
812 error_report("Invalid cache option: %s", cache);
Stefan Hajnoczia3981eb2014-08-26 19:17:54 +0100813 return 1;
Federico Simoncelli661a0f72011-06-20 12:48:19 -0400814 }
815
Markus Armbruster7e7d56d2014-10-07 13:59:05 +0200816 blk = img_open("image", filename, fmt, flags, true, quiet);
817 if (!blk) {
818 return 1;
MORITA Kazutakac2abcce2010-06-21 04:26:35 +0900819 }
Markus Armbruster7e7d56d2014-10-07 13:59:05 +0200820 bs = blk_bs(blk);
821
Max Reitz687fa1d2014-10-24 15:57:39 +0200822 qemu_progress_init(progress, 1.f);
823 qemu_progress_print(0.f, 100);
824
Max Reitz1b22bff2014-10-24 15:57:40 +0200825 if (base) {
826 base_bs = bdrv_find_backing_image(bs, base);
827 if (!base_bs) {
828 error_set(&local_err, QERR_BASE_NOT_FOUND, base);
829 goto done;
830 }
831 } else {
832 /* This is different from QMP, which by default uses the deepest file in
833 * the backing chain (i.e., the very base); however, the traditional
834 * behavior of qemu-img commit is using the immediate backing file. */
835 base_bs = bs->backing_hd;
836 if (!base_bs) {
837 error_setg(&local_err, "Image does not have a backing file");
838 goto done;
839 }
bellardea2384d2004-08-01 21:59:26 +0000840 }
841
Max Reitzd4a32382014-10-24 15:57:37 +0200842 cbi = (CommonBlockJobCBInfo){
843 .errp = &local_err,
844 .bs = bs,
845 };
846
847 commit_active_start(bs, base_bs, 0, BLOCKDEV_ON_ERROR_REPORT,
848 common_block_job_cb, &cbi, &local_err);
849 if (local_err) {
850 goto done;
851 }
852
Max Reitz9a86fe42014-10-24 15:57:38 +0200853 /* The block job will swap base_bs and bs (which is not what we really want
854 * here, but okay) and unref base_bs (after the swap, i.e., the old top
855 * image). In order to still be able to empty that top image afterwards,
856 * increment the reference counter here preemptively. */
857 if (!drop) {
858 bdrv_ref(base_bs);
859 }
860
Max Reitzd4a32382014-10-24 15:57:37 +0200861 run_block_job(bs->job, &local_err);
Max Reitz9a86fe42014-10-24 15:57:38 +0200862 if (local_err) {
863 goto unref_backing;
864 }
865
866 if (!drop && base_bs->drv->bdrv_make_empty) {
867 ret = base_bs->drv->bdrv_make_empty(base_bs);
868 if (ret) {
869 error_setg_errno(&local_err, -ret, "Could not empty %s",
870 filename);
871 goto unref_backing;
872 }
873 }
874
875unref_backing:
876 if (!drop) {
877 bdrv_unref(base_bs);
878 }
Max Reitzd4a32382014-10-24 15:57:37 +0200879
880done:
Max Reitz687fa1d2014-10-24 15:57:39 +0200881 qemu_progress_end();
882
Markus Armbruster26f54e92014-10-07 13:59:04 +0200883 blk_unref(blk);
Max Reitzd4a32382014-10-24 15:57:37 +0200884
885 if (local_err) {
Markus Armbruster6936f292015-02-10 15:14:02 +0100886 error_report_err(local_err);
MORITA Kazutakac2abcce2010-06-21 04:26:35 +0900887 return 1;
888 }
Max Reitzd4a32382014-10-24 15:57:37 +0200889
890 qprintf(quiet, "Image committed.\n");
bellardea2384d2004-08-01 21:59:26 +0000891 return 0;
892}
893
Dmitry Konishchevf6a00aa2011-05-18 15:03:59 +0400894/*
thsf58c7b32008-06-05 21:53:49 +0000895 * Returns true iff the first sector pointed to by 'buf' contains at least
896 * a non-NUL byte.
897 *
898 * 'pnum' is set to the number of sectors (including and immediately following
899 * the first one) that are known to be in the same allocated/unallocated state.
900 */
bellardea2384d2004-08-01 21:59:26 +0000901static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum)
902{
Stefan Hajnoczi1a6d39f2012-02-07 13:27:24 +0000903 bool is_zero;
904 int i;
bellardea2384d2004-08-01 21:59:26 +0000905
906 if (n <= 0) {
907 *pnum = 0;
908 return 0;
909 }
Stefan Hajnoczi1a6d39f2012-02-07 13:27:24 +0000910 is_zero = buffer_is_zero(buf, 512);
bellardea2384d2004-08-01 21:59:26 +0000911 for(i = 1; i < n; i++) {
912 buf += 512;
Stefan Hajnoczi1a6d39f2012-02-07 13:27:24 +0000913 if (is_zero != buffer_is_zero(buf, 512)) {
bellardea2384d2004-08-01 21:59:26 +0000914 break;
Stefan Hajnoczi1a6d39f2012-02-07 13:27:24 +0000915 }
bellardea2384d2004-08-01 21:59:26 +0000916 }
917 *pnum = i;
Stefan Hajnoczi1a6d39f2012-02-07 13:27:24 +0000918 return !is_zero;
bellardea2384d2004-08-01 21:59:26 +0000919}
920
Kevin Wolf3e85c6f2010-01-12 12:55:18 +0100921/*
Kevin Wolfa22f1232011-08-26 15:27:13 +0200922 * Like is_allocated_sectors, but if the buffer starts with a used sector,
923 * up to 'min' consecutive sectors containing zeros are ignored. This avoids
924 * breaking up write requests for only small sparse areas.
925 */
926static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum,
927 int min)
928{
929 int ret;
930 int num_checked, num_used;
931
932 if (n < min) {
933 min = n;
934 }
935
936 ret = is_allocated_sectors(buf, n, pnum);
937 if (!ret) {
938 return ret;
939 }
940
941 num_used = *pnum;
942 buf += BDRV_SECTOR_SIZE * *pnum;
943 n -= *pnum;
944 num_checked = num_used;
945
946 while (n > 0) {
947 ret = is_allocated_sectors(buf, n, pnum);
948
949 buf += BDRV_SECTOR_SIZE * *pnum;
950 n -= *pnum;
951 num_checked += *pnum;
952 if (ret) {
953 num_used = num_checked;
954 } else if (*pnum >= min) {
955 break;
956 }
957 }
958
959 *pnum = num_used;
960 return 1;
961}
962
963/*
Kevin Wolf3e85c6f2010-01-12 12:55:18 +0100964 * Compares two buffers sector by sector. Returns 0 if the first sector of both
965 * buffers matches, non-zero otherwise.
966 *
967 * pnum is set to the number of sectors (including and immediately following
968 * the first one) that are known to have the same comparison result
969 */
970static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n,
971 int *pnum)
972{
973 int res, i;
974
975 if (n <= 0) {
976 *pnum = 0;
977 return 0;
978 }
979
980 res = !!memcmp(buf1, buf2, 512);
981 for(i = 1; i < n; i++) {
982 buf1 += 512;
983 buf2 += 512;
984
985 if (!!memcmp(buf1, buf2, 512) != res) {
986 break;
987 }
988 }
989
990 *pnum = i;
991 return res;
992}
993
Kevin Wolf80ee15a2009-09-15 12:30:43 +0200994#define IO_BUF_SIZE (2 * 1024 * 1024)
bellardea2384d2004-08-01 21:59:26 +0000995
Miroslav Rezaninad14ed182013-02-13 09:09:41 +0100996static int64_t sectors_to_bytes(int64_t sectors)
997{
998 return sectors << BDRV_SECTOR_BITS;
999}
1000
1001static int64_t sectors_to_process(int64_t total, int64_t from)
1002{
1003 return MIN(total - from, IO_BUF_SIZE >> BDRV_SECTOR_BITS);
1004}
1005
1006/*
1007 * Check if passed sectors are empty (not allocated or contain only 0 bytes)
1008 *
1009 * Returns 0 in case sectors are filled with 0, 1 if sectors contain non-zero
1010 * data and negative value on error.
1011 *
Max Reitzf1d3cd72015-02-05 13:58:18 -05001012 * @param blk: BlockBackend for the image
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001013 * @param sect_num: Number of first sector to check
1014 * @param sect_count: Number of sectors to check
1015 * @param filename: Name of disk file we are checking (logging purpose)
1016 * @param buffer: Allocated buffer for storing read data
1017 * @param quiet: Flag for quiet mode
1018 */
Max Reitzf1d3cd72015-02-05 13:58:18 -05001019static int check_empty_sectors(BlockBackend *blk, int64_t sect_num,
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001020 int sect_count, const char *filename,
1021 uint8_t *buffer, bool quiet)
1022{
1023 int pnum, ret = 0;
Max Reitzf1d3cd72015-02-05 13:58:18 -05001024 ret = blk_read(blk, sect_num, buffer, sect_count);
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001025 if (ret < 0) {
1026 error_report("Error while reading offset %" PRId64 " of %s: %s",
1027 sectors_to_bytes(sect_num), filename, strerror(-ret));
1028 return ret;
1029 }
1030 ret = is_allocated_sectors(buffer, sect_count, &pnum);
1031 if (ret || pnum != sect_count) {
1032 qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n",
1033 sectors_to_bytes(ret ? sect_num : sect_num + pnum));
1034 return 1;
1035 }
1036
1037 return 0;
1038}
1039
1040/*
1041 * Compares two images. Exit codes:
1042 *
1043 * 0 - Images are identical
1044 * 1 - Images differ
1045 * >1 - Error occurred
1046 */
1047static int img_compare(int argc, char **argv)
1048{
Max Reitz40055952014-07-22 22:58:42 +02001049 const char *fmt1 = NULL, *fmt2 = NULL, *cache, *filename1, *filename2;
Markus Armbruster26f54e92014-10-07 13:59:04 +02001050 BlockBackend *blk1, *blk2;
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001051 BlockDriverState *bs1, *bs2;
1052 int64_t total_sectors1, total_sectors2;
1053 uint8_t *buf1 = NULL, *buf2 = NULL;
1054 int pnum1, pnum2;
1055 int allocated1, allocated2;
1056 int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */
1057 bool progress = false, quiet = false, strict = false;
Max Reitz40055952014-07-22 22:58:42 +02001058 int flags;
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001059 int64_t total_sectors;
1060 int64_t sector_num = 0;
1061 int64_t nb_sectors;
1062 int c, pnum;
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001063 uint64_t progress_base;
1064
Max Reitz40055952014-07-22 22:58:42 +02001065 cache = BDRV_DEFAULT_CACHE;
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001066 for (;;) {
Max Reitz40055952014-07-22 22:58:42 +02001067 c = getopt(argc, argv, "hf:F:T:pqs");
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001068 if (c == -1) {
1069 break;
1070 }
1071 switch (c) {
1072 case '?':
1073 case 'h':
1074 help();
1075 break;
1076 case 'f':
1077 fmt1 = optarg;
1078 break;
1079 case 'F':
1080 fmt2 = optarg;
1081 break;
Max Reitz40055952014-07-22 22:58:42 +02001082 case 'T':
1083 cache = optarg;
1084 break;
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001085 case 'p':
1086 progress = true;
1087 break;
1088 case 'q':
1089 quiet = true;
1090 break;
1091 case 's':
1092 strict = true;
1093 break;
1094 }
1095 }
1096
1097 /* Progress is not shown in Quiet mode */
1098 if (quiet) {
1099 progress = false;
1100 }
1101
1102
Kevin Wolffc11eb22013-08-05 10:53:04 +02001103 if (optind != argc - 2) {
Fam Zhengac1307a2014-04-22 13:36:11 +08001104 error_exit("Expecting two image file names");
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001105 }
1106 filename1 = argv[optind++];
1107 filename2 = argv[optind++];
1108
Stefan Hajnoczicbda0162014-08-26 19:17:55 +01001109 /* Initialize before goto out */
1110 qemu_progress_init(progress, 2.0);
1111
Max Reitz40055952014-07-22 22:58:42 +02001112 flags = BDRV_O_FLAGS;
1113 ret = bdrv_parse_cache_flags(cache, &flags);
1114 if (ret < 0) {
1115 error_report("Invalid source cache option: %s", cache);
1116 ret = 2;
1117 goto out3;
1118 }
1119
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02001120 blk1 = img_open("image_1", filename1, fmt1, flags, true, quiet);
1121 if (!blk1) {
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001122 ret = 2;
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02001123 goto out3;
1124 }
1125 bs1 = blk_bs(blk1);
1126
1127 blk2 = img_open("image_2", filename2, fmt2, flags, true, quiet);
1128 if (!blk2) {
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02001129 ret = 2;
Markus Armbruster26f54e92014-10-07 13:59:04 +02001130 goto out2;
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001131 }
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02001132 bs2 = blk_bs(blk2);
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001133
Max Reitzf1d3cd72015-02-05 13:58:18 -05001134 buf1 = blk_blockalign(blk1, IO_BUF_SIZE);
1135 buf2 = blk_blockalign(blk2, IO_BUF_SIZE);
1136 total_sectors1 = blk_nb_sectors(blk1);
Markus Armbruster52bf1e72014-06-26 13:23:25 +02001137 if (total_sectors1 < 0) {
1138 error_report("Can't get size of %s: %s",
1139 filename1, strerror(-total_sectors1));
1140 ret = 4;
1141 goto out;
1142 }
Max Reitzf1d3cd72015-02-05 13:58:18 -05001143 total_sectors2 = blk_nb_sectors(blk2);
Markus Armbruster52bf1e72014-06-26 13:23:25 +02001144 if (total_sectors2 < 0) {
1145 error_report("Can't get size of %s: %s",
1146 filename2, strerror(-total_sectors2));
1147 ret = 4;
1148 goto out;
1149 }
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001150 total_sectors = MIN(total_sectors1, total_sectors2);
1151 progress_base = MAX(total_sectors1, total_sectors2);
1152
1153 qemu_progress_print(0, 100);
1154
1155 if (strict && total_sectors1 != total_sectors2) {
1156 ret = 1;
1157 qprintf(quiet, "Strict mode: Image size mismatch!\n");
1158 goto out;
1159 }
1160
1161 for (;;) {
1162 nb_sectors = sectors_to_process(total_sectors, sector_num);
1163 if (nb_sectors <= 0) {
1164 break;
1165 }
1166 allocated1 = bdrv_is_allocated_above(bs1, NULL, sector_num, nb_sectors,
1167 &pnum1);
1168 if (allocated1 < 0) {
1169 ret = 3;
1170 error_report("Sector allocation test failed for %s", filename1);
1171 goto out;
1172 }
1173
1174 allocated2 = bdrv_is_allocated_above(bs2, NULL, sector_num, nb_sectors,
1175 &pnum2);
1176 if (allocated2 < 0) {
1177 ret = 3;
1178 error_report("Sector allocation test failed for %s", filename2);
1179 goto out;
1180 }
1181 nb_sectors = MIN(pnum1, pnum2);
1182
1183 if (allocated1 == allocated2) {
1184 if (allocated1) {
Max Reitzf1d3cd72015-02-05 13:58:18 -05001185 ret = blk_read(blk1, sector_num, buf1, nb_sectors);
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001186 if (ret < 0) {
1187 error_report("Error while reading offset %" PRId64 " of %s:"
1188 " %s", sectors_to_bytes(sector_num), filename1,
1189 strerror(-ret));
1190 ret = 4;
1191 goto out;
1192 }
Max Reitzf1d3cd72015-02-05 13:58:18 -05001193 ret = blk_read(blk2, sector_num, buf2, nb_sectors);
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001194 if (ret < 0) {
1195 error_report("Error while reading offset %" PRId64
1196 " of %s: %s", sectors_to_bytes(sector_num),
1197 filename2, strerror(-ret));
1198 ret = 4;
1199 goto out;
1200 }
1201 ret = compare_sectors(buf1, buf2, nb_sectors, &pnum);
1202 if (ret || pnum != nb_sectors) {
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001203 qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n",
1204 sectors_to_bytes(
1205 ret ? sector_num : sector_num + pnum));
Fam Zheng36452f12013-11-13 20:26:49 +08001206 ret = 1;
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001207 goto out;
1208 }
1209 }
1210 } else {
1211 if (strict) {
1212 ret = 1;
1213 qprintf(quiet, "Strict mode: Offset %" PRId64
1214 " allocation mismatch!\n",
1215 sectors_to_bytes(sector_num));
1216 goto out;
1217 }
1218
1219 if (allocated1) {
Max Reitzf1d3cd72015-02-05 13:58:18 -05001220 ret = check_empty_sectors(blk1, sector_num, nb_sectors,
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001221 filename1, buf1, quiet);
1222 } else {
Max Reitzf1d3cd72015-02-05 13:58:18 -05001223 ret = check_empty_sectors(blk2, sector_num, nb_sectors,
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001224 filename2, buf1, quiet);
1225 }
1226 if (ret) {
1227 if (ret < 0) {
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001228 error_report("Error while reading offset %" PRId64 ": %s",
1229 sectors_to_bytes(sector_num), strerror(-ret));
Fam Zheng36452f12013-11-13 20:26:49 +08001230 ret = 4;
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001231 }
1232 goto out;
1233 }
1234 }
1235 sector_num += nb_sectors;
1236 qemu_progress_print(((float) nb_sectors / progress_base)*100, 100);
1237 }
1238
1239 if (total_sectors1 != total_sectors2) {
Max Reitzf1d3cd72015-02-05 13:58:18 -05001240 BlockBackend *blk_over;
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001241 int64_t total_sectors_over;
1242 const char *filename_over;
1243
1244 qprintf(quiet, "Warning: Image size mismatch!\n");
1245 if (total_sectors1 > total_sectors2) {
1246 total_sectors_over = total_sectors1;
Max Reitzf1d3cd72015-02-05 13:58:18 -05001247 blk_over = blk1;
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001248 filename_over = filename1;
1249 } else {
1250 total_sectors_over = total_sectors2;
Max Reitzf1d3cd72015-02-05 13:58:18 -05001251 blk_over = blk2;
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001252 filename_over = filename2;
1253 }
1254
1255 for (;;) {
1256 nb_sectors = sectors_to_process(total_sectors_over, sector_num);
1257 if (nb_sectors <= 0) {
1258 break;
1259 }
Max Reitzf1d3cd72015-02-05 13:58:18 -05001260 ret = bdrv_is_allocated_above(blk_bs(blk_over), NULL, sector_num,
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001261 nb_sectors, &pnum);
1262 if (ret < 0) {
1263 ret = 3;
1264 error_report("Sector allocation test failed for %s",
1265 filename_over);
1266 goto out;
1267
1268 }
1269 nb_sectors = pnum;
1270 if (ret) {
Max Reitzf1d3cd72015-02-05 13:58:18 -05001271 ret = check_empty_sectors(blk_over, sector_num, nb_sectors,
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001272 filename_over, buf1, quiet);
1273 if (ret) {
1274 if (ret < 0) {
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001275 error_report("Error while reading offset %" PRId64
1276 " of %s: %s", sectors_to_bytes(sector_num),
1277 filename_over, strerror(-ret));
Fam Zheng36452f12013-11-13 20:26:49 +08001278 ret = 4;
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001279 }
1280 goto out;
1281 }
1282 }
1283 sector_num += nb_sectors;
1284 qemu_progress_print(((float) nb_sectors / progress_base)*100, 100);
1285 }
1286 }
1287
1288 qprintf(quiet, "Images are identical.\n");
1289 ret = 0;
1290
1291out:
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001292 qemu_vfree(buf1);
1293 qemu_vfree(buf2);
Markus Armbruster26f54e92014-10-07 13:59:04 +02001294 blk_unref(blk2);
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001295out2:
Markus Armbruster26f54e92014-10-07 13:59:04 +02001296 blk_unref(blk1);
Miroslav Rezaninad14ed182013-02-13 09:09:41 +01001297out3:
1298 qemu_progress_end();
1299 return ret;
1300}
1301
bellardea2384d2004-08-01 21:59:26 +00001302static int img_convert(int argc, char **argv)
1303{
Peter Lieven24f833c2013-11-27 11:07:07 +01001304 int c, n, n1, bs_n, bs_i, compress, cluster_sectors, skip_create;
Peter Lieven13c28af2013-11-27 11:07:01 +01001305 int64_t ret = 0;
Max Reitz40055952014-07-22 22:58:42 +02001306 int progress = 0, flags, src_flags;
1307 const char *fmt, *out_fmt, *cache, *src_cache, *out_baseimg, *out_filename;
MORITA Kazutakab50cbab2010-05-26 11:35:36 +09001308 BlockDriver *drv, *proto_drv;
Markus Armbruster26f54e92014-10-07 13:59:04 +02001309 BlockBackend **blk = NULL, *out_blk = NULL;
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001310 BlockDriverState **bs = NULL, *out_bs = NULL;
Peter Lieven802c3d42013-12-05 15:54:53 +01001311 int64_t total_sectors, nb_sectors, sector_num, bs_offset;
Markus Armbruster52bf1e72014-06-26 13:23:25 +02001312 int64_t *bs_sectors = NULL;
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001313 uint8_t * buf = NULL;
Peter Lievenf2521c92013-11-27 11:07:06 +01001314 size_t bufsectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE;
bellardea2384d2004-08-01 21:59:26 +00001315 const uint8_t *buf1;
bellardfaea38e2006-08-05 21:31:00 +00001316 BlockDriverInfo bdi;
Chunyan Liu83d05212014-06-05 17:20:51 +08001317 QemuOpts *opts = NULL;
1318 QemuOptsList *create_opts = NULL;
1319 const char *out_baseimg_param;
Kevin Wolfefa84d42009-05-18 16:42:12 +02001320 char *options = NULL;
edison51ef6722010-09-21 19:58:41 -07001321 const char *snapshot_name = NULL;
Kevin Wolfa22f1232011-08-26 15:27:13 +02001322 int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */
Miroslav Rezaninaf382d432013-02-13 09:09:40 +01001323 bool quiet = false;
Max Reitzcc84d902013-09-06 17:14:26 +02001324 Error *local_err = NULL;
Wenchao Xiaef806542013-12-04 17:10:57 +08001325 QemuOpts *sn_opts = NULL;
bellardea2384d2004-08-01 21:59:26 +00001326
1327 fmt = NULL;
1328 out_fmt = "raw";
Federico Simoncelli661a0f72011-06-20 12:48:19 -04001329 cache = "unsafe";
Max Reitz40055952014-07-22 22:58:42 +02001330 src_cache = BDRV_DEFAULT_CACHE;
thsf58c7b32008-06-05 21:53:49 +00001331 out_baseimg = NULL;
Jes Sorenseneec77d92010-12-07 17:44:34 +01001332 compress = 0;
Alexandre Derumierb2e10492013-09-02 19:07:24 +01001333 skip_create = 0;
bellardea2384d2004-08-01 21:59:26 +00001334 for(;;) {
Max Reitz40055952014-07-22 22:58:42 +02001335 c = getopt(argc, argv, "hf:O:B:ce6o:s:l:S:pt:T:qn");
Jes Sorensenb8fb60d2010-12-06 15:25:39 +01001336 if (c == -1) {
bellardea2384d2004-08-01 21:59:26 +00001337 break;
Jes Sorensenb8fb60d2010-12-06 15:25:39 +01001338 }
bellardea2384d2004-08-01 21:59:26 +00001339 switch(c) {
Jes Sorensenef873942010-12-06 15:25:40 +01001340 case '?':
bellardea2384d2004-08-01 21:59:26 +00001341 case 'h':
1342 help();
1343 break;
1344 case 'f':
1345 fmt = optarg;
1346 break;
1347 case 'O':
1348 out_fmt = optarg;
1349 break;
thsf58c7b32008-06-05 21:53:49 +00001350 case 'B':
1351 out_baseimg = optarg;
1352 break;
bellardea2384d2004-08-01 21:59:26 +00001353 case 'c':
Jes Sorenseneec77d92010-12-07 17:44:34 +01001354 compress = 1;
bellardea2384d2004-08-01 21:59:26 +00001355 break;
1356 case 'e':
Markus Armbruster9d42e152011-06-22 14:03:55 +02001357 error_report("option -e is deprecated, please use \'-o "
Jes Sorenseneec77d92010-12-07 17:44:34 +01001358 "encryption\' instead!");
Kevin Wolf2dc83282014-02-21 16:24:05 +01001359 ret = -1;
Kevin Wolf64bb01a2014-03-03 14:54:07 +01001360 goto fail_getopt;
thsec36ba12007-09-16 21:59:02 +00001361 case '6':
Markus Armbruster9d42e152011-06-22 14:03:55 +02001362 error_report("option -6 is deprecated, please use \'-o "
Jes Sorenseneec77d92010-12-07 17:44:34 +01001363 "compat6\' instead!");
Kevin Wolf2dc83282014-02-21 16:24:05 +01001364 ret = -1;
Kevin Wolf64bb01a2014-03-03 14:54:07 +01001365 goto fail_getopt;
Kevin Wolfefa84d42009-05-18 16:42:12 +02001366 case 'o':
Kevin Wolf2dc83282014-02-21 16:24:05 +01001367 if (!is_valid_option_list(optarg)) {
1368 error_report("Invalid option list: %s", optarg);
1369 ret = -1;
Kevin Wolf64bb01a2014-03-03 14:54:07 +01001370 goto fail_getopt;
Kevin Wolf2dc83282014-02-21 16:24:05 +01001371 }
1372 if (!options) {
1373 options = g_strdup(optarg);
1374 } else {
1375 char *old_options = options;
1376 options = g_strdup_printf("%s,%s", options, optarg);
1377 g_free(old_options);
1378 }
Kevin Wolfefa84d42009-05-18 16:42:12 +02001379 break;
edison51ef6722010-09-21 19:58:41 -07001380 case 's':
1381 snapshot_name = optarg;
1382 break;
Wenchao Xiaef806542013-12-04 17:10:57 +08001383 case 'l':
1384 if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) {
1385 sn_opts = qemu_opts_parse(&internal_snapshot_opts, optarg, 0);
1386 if (!sn_opts) {
1387 error_report("Failed in parsing snapshot param '%s'",
1388 optarg);
Kevin Wolf2dc83282014-02-21 16:24:05 +01001389 ret = -1;
Kevin Wolf64bb01a2014-03-03 14:54:07 +01001390 goto fail_getopt;
Wenchao Xiaef806542013-12-04 17:10:57 +08001391 }
1392 } else {
1393 snapshot_name = optarg;
1394 }
1395 break;
Kevin Wolfa22f1232011-08-26 15:27:13 +02001396 case 'S':
1397 {
1398 int64_t sval;
Markus Armbrustere36b3692011-11-22 09:46:05 +01001399 char *end;
1400 sval = strtosz_suffix(optarg, &end, STRTOSZ_DEFSUFFIX_B);
1401 if (sval < 0 || *end) {
Kevin Wolfa22f1232011-08-26 15:27:13 +02001402 error_report("Invalid minimum zero buffer size for sparse output specified");
Kevin Wolf2dc83282014-02-21 16:24:05 +01001403 ret = -1;
Kevin Wolf64bb01a2014-03-03 14:54:07 +01001404 goto fail_getopt;
Kevin Wolfa22f1232011-08-26 15:27:13 +02001405 }
1406
1407 min_sparse = sval / BDRV_SECTOR_SIZE;
1408 break;
1409 }
Jes Sorensen6b837bc2011-03-30 14:16:25 +02001410 case 'p':
1411 progress = 1;
1412 break;
Federico Simoncelli661a0f72011-06-20 12:48:19 -04001413 case 't':
1414 cache = optarg;
1415 break;
Max Reitz40055952014-07-22 22:58:42 +02001416 case 'T':
1417 src_cache = optarg;
1418 break;
Miroslav Rezaninaf382d432013-02-13 09:09:40 +01001419 case 'q':
1420 quiet = true;
1421 break;
Alexandre Derumierb2e10492013-09-02 19:07:24 +01001422 case 'n':
1423 skip_create = 1;
1424 break;
bellardea2384d2004-08-01 21:59:26 +00001425 }
1426 }
ths3b46e622007-09-17 08:09:54 +00001427
Kevin Wolf64bb01a2014-03-03 14:54:07 +01001428 /* Initialize before goto out */
Miroslav Rezaninaf382d432013-02-13 09:09:40 +01001429 if (quiet) {
1430 progress = 0;
1431 }
Kevin Wolf64bb01a2014-03-03 14:54:07 +01001432 qemu_progress_init(progress, 1.0);
1433
Miroslav Rezaninaf382d432013-02-13 09:09:40 +01001434
balrog926c2d22007-10-31 01:11:44 +00001435 bs_n = argc - optind - 1;
Kevin Wolfa283cb62014-02-21 16:24:07 +01001436 out_filename = bs_n >= 1 ? argv[argc - 1] : NULL;
thsf58c7b32008-06-05 21:53:49 +00001437
Kevin Wolf2dc83282014-02-21 16:24:05 +01001438 if (options && has_help_option(options)) {
Jes Sorensen4ac8aac2010-12-06 15:25:38 +01001439 ret = print_block_option_help(out_filename, out_fmt);
1440 goto out;
1441 }
1442
bellardea2384d2004-08-01 21:59:26 +00001443 if (bs_n < 1) {
Fam Zhengac1307a2014-04-22 13:36:11 +08001444 error_exit("Must specify image file name");
ths5fafdf22007-09-16 21:08:06 +00001445 }
bellardea2384d2004-08-01 21:59:26 +00001446
thsf58c7b32008-06-05 21:53:49 +00001447
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001448 if (bs_n > 1 && out_baseimg) {
Jes Sorensen15654a62010-12-16 14:31:53 +01001449 error_report("-B makes no sense when concatenating multiple input "
1450 "images");
Jes Sorensen31ca34b2010-12-06 15:25:36 +01001451 ret = -1;
1452 goto out;
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001453 }
Dong Xu Wangf8111c22012-03-15 20:13:31 +08001454
Max Reitz40055952014-07-22 22:58:42 +02001455 src_flags = BDRV_O_FLAGS;
1456 ret = bdrv_parse_cache_flags(src_cache, &src_flags);
1457 if (ret < 0) {
1458 error_report("Invalid source cache option: %s", src_cache);
1459 goto out;
1460 }
1461
Jes Sorensen6b837bc2011-03-30 14:16:25 +02001462 qemu_progress_print(0, 100);
1463
Markus Armbruster26f54e92014-10-07 13:59:04 +02001464 blk = g_new0(BlockBackend *, bs_n);
Markus Armbrusterd739f1c2014-06-26 13:23:24 +02001465 bs = g_new0(BlockDriverState *, bs_n);
Markus Armbruster52bf1e72014-06-26 13:23:25 +02001466 bs_sectors = g_new(int64_t, bs_n);
balrog926c2d22007-10-31 01:11:44 +00001467
1468 total_sectors = 0;
1469 for (bs_i = 0; bs_i < bs_n; bs_i++) {
Kevin Wolf9aebf3b2014-09-25 09:54:02 +02001470 char *id = bs_n > 1 ? g_strdup_printf("source_%d", bs_i)
Kevin Wolf9ffe3332014-04-17 16:57:13 +02001471 : g_strdup("source");
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02001472 blk[bs_i] = img_open(id, argv[optind + bs_i], fmt, src_flags,
1473 true, quiet);
Kevin Wolf9ffe3332014-04-17 16:57:13 +02001474 g_free(id);
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02001475 if (!blk[bs_i]) {
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001476 ret = -1;
1477 goto out;
1478 }
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02001479 bs[bs_i] = blk_bs(blk[bs_i]);
Max Reitzf1d3cd72015-02-05 13:58:18 -05001480 bs_sectors[bs_i] = blk_nb_sectors(blk[bs_i]);
Markus Armbruster52bf1e72014-06-26 13:23:25 +02001481 if (bs_sectors[bs_i] < 0) {
1482 error_report("Could not get size of %s: %s",
1483 argv[optind + bs_i], strerror(-bs_sectors[bs_i]));
1484 ret = -1;
1485 goto out;
1486 }
Markus Armbrusterd739f1c2014-06-26 13:23:24 +02001487 total_sectors += bs_sectors[bs_i];
balrog926c2d22007-10-31 01:11:44 +00001488 }
bellardea2384d2004-08-01 21:59:26 +00001489
Wenchao Xiaef806542013-12-04 17:10:57 +08001490 if (sn_opts) {
1491 ret = bdrv_snapshot_load_tmp(bs[0],
1492 qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID),
1493 qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME),
1494 &local_err);
1495 } else if (snapshot_name != NULL) {
edison51ef6722010-09-21 19:58:41 -07001496 if (bs_n > 1) {
Markus Armbruster6daf1942011-06-22 14:03:54 +02001497 error_report("No support for concatenating multiple snapshot");
edison51ef6722010-09-21 19:58:41 -07001498 ret = -1;
1499 goto out;
1500 }
Wenchao Xia7b4c4782013-12-04 17:10:54 +08001501
1502 bdrv_snapshot_load_tmp_by_id_or_name(bs[0], snapshot_name, &local_err);
Wenchao Xiaef806542013-12-04 17:10:57 +08001503 }
Markus Armbruster84d18f02014-01-30 15:07:28 +01001504 if (local_err) {
Wenchao Xiaef806542013-12-04 17:10:57 +08001505 error_report("Failed to load snapshot: %s",
1506 error_get_pretty(local_err));
1507 error_free(local_err);
1508 ret = -1;
1509 goto out;
edison51ef6722010-09-21 19:58:41 -07001510 }
1511
Kevin Wolfefa84d42009-05-18 16:42:12 +02001512 /* Find driver and parse its options */
bellardea2384d2004-08-01 21:59:26 +00001513 drv = bdrv_find_format(out_fmt);
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001514 if (!drv) {
Jes Sorensen15654a62010-12-16 14:31:53 +01001515 error_report("Unknown file format '%s'", out_fmt);
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001516 ret = -1;
1517 goto out;
1518 }
balrog926c2d22007-10-31 01:11:44 +00001519
Max Reitzb65a5e12015-02-05 13:58:12 -05001520 proto_drv = bdrv_find_protocol(out_filename, true, &local_err);
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001521 if (!proto_drv) {
Max Reitzb65a5e12015-02-05 13:58:12 -05001522 qerror_report_err(local_err);
1523 error_free(local_err);
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001524 ret = -1;
1525 goto out;
1526 }
MORITA Kazutakab50cbab2010-05-26 11:35:36 +09001527
Max Reitz2e024cd2015-02-11 09:58:46 -05001528 if (!skip_create) {
1529 if (!drv->create_opts) {
1530 error_report("Format driver '%s' does not support image creation",
1531 drv->format_name);
1532 ret = -1;
1533 goto out;
1534 }
Max Reitzf75613c2014-12-02 18:32:46 +01001535
Max Reitz2e024cd2015-02-11 09:58:46 -05001536 if (!proto_drv->create_opts) {
1537 error_report("Protocol driver '%s' does not support image creation",
1538 proto_drv->format_name);
1539 ret = -1;
1540 goto out;
1541 }
Max Reitzf75613c2014-12-02 18:32:46 +01001542
Max Reitz2e024cd2015-02-11 09:58:46 -05001543 create_opts = qemu_opts_append(create_opts, drv->create_opts);
1544 create_opts = qemu_opts_append(create_opts, proto_drv->create_opts);
Kevin Wolfdb08adf2009-06-04 15:39:38 +02001545
Max Reitz2e024cd2015-02-11 09:58:46 -05001546 opts = qemu_opts_create(create_opts, NULL, 0, &error_abort);
1547 if (options && qemu_opts_do_parse(opts, options, NULL)) {
1548 error_report("Invalid options for file format '%s'", out_fmt);
1549 ret = -1;
1550 goto out;
1551 }
Kevin Wolfefa84d42009-05-18 16:42:12 +02001552
Max Reitz2e024cd2015-02-11 09:58:46 -05001553 qemu_opt_set_number(opts, BLOCK_OPT_SIZE, total_sectors * 512);
1554 ret = add_old_style_options(out_fmt, opts, out_baseimg, NULL);
1555 if (ret < 0) {
1556 goto out;
1557 }
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001558 }
Kevin Wolfefa84d42009-05-18 16:42:12 +02001559
Kevin Wolfa18953f2010-10-14 15:46:04 +02001560 /* Get backing file name if -o backing_file was used */
Chunyan Liu83d05212014-06-05 17:20:51 +08001561 out_baseimg_param = qemu_opt_get(opts, BLOCK_OPT_BACKING_FILE);
Kevin Wolfa18953f2010-10-14 15:46:04 +02001562 if (out_baseimg_param) {
Chunyan Liu83d05212014-06-05 17:20:51 +08001563 out_baseimg = out_baseimg_param;
Kevin Wolfa18953f2010-10-14 15:46:04 +02001564 }
1565
Kevin Wolfefa84d42009-05-18 16:42:12 +02001566 /* Check if compression is supported */
Jes Sorenseneec77d92010-12-07 17:44:34 +01001567 if (compress) {
Chunyan Liu83d05212014-06-05 17:20:51 +08001568 bool encryption =
1569 qemu_opt_get_bool(opts, BLOCK_OPT_ENCRYPT, false);
1570 const char *preallocation =
1571 qemu_opt_get(opts, BLOCK_OPT_PREALLOC);
Kevin Wolfefa84d42009-05-18 16:42:12 +02001572
1573 if (!drv->bdrv_write_compressed) {
Jes Sorensen15654a62010-12-16 14:31:53 +01001574 error_report("Compression not supported for this file format");
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001575 ret = -1;
1576 goto out;
Kevin Wolfefa84d42009-05-18 16:42:12 +02001577 }
1578
Chunyan Liu83d05212014-06-05 17:20:51 +08001579 if (encryption) {
Jes Sorensen15654a62010-12-16 14:31:53 +01001580 error_report("Compression and encryption not supported at "
1581 "the same time");
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001582 ret = -1;
1583 goto out;
Kevin Wolfefa84d42009-05-18 16:42:12 +02001584 }
Kevin Wolf41521fa2011-10-18 16:19:42 +02001585
Chunyan Liu83d05212014-06-05 17:20:51 +08001586 if (preallocation
1587 && strcmp(preallocation, "off"))
Kevin Wolf41521fa2011-10-18 16:19:42 +02001588 {
1589 error_report("Compression and preallocation not supported at "
1590 "the same time");
1591 ret = -1;
1592 goto out;
1593 }
Kevin Wolfefa84d42009-05-18 16:42:12 +02001594 }
1595
Alexandre Derumierb2e10492013-09-02 19:07:24 +01001596 if (!skip_create) {
1597 /* Create the new image */
Chunyan Liuc282e1f2014-06-05 17:21:11 +08001598 ret = bdrv_create(drv, out_filename, opts, &local_err);
Alexandre Derumierb2e10492013-09-02 19:07:24 +01001599 if (ret < 0) {
Max Reitzcc84d902013-09-06 17:14:26 +02001600 error_report("%s: error while converting %s: %s",
1601 out_filename, out_fmt, error_get_pretty(local_err));
1602 error_free(local_err);
Alexandre Derumierb2e10492013-09-02 19:07:24 +01001603 goto out;
bellardea2384d2004-08-01 21:59:26 +00001604 }
1605 }
ths3b46e622007-09-17 08:09:54 +00001606
Peter Lieven5a37b602013-10-24 12:07:06 +02001607 flags = min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR;
Stefan Hajnoczic3993cd2011-08-04 12:26:51 +01001608 ret = bdrv_parse_cache_flags(cache, &flags);
Federico Simoncelli661a0f72011-06-20 12:48:19 -04001609 if (ret < 0) {
1610 error_report("Invalid cache option: %s", cache);
Markus Armbrusterbb9cd2e2014-05-28 11:17:07 +02001611 goto out;
Federico Simoncelli661a0f72011-06-20 12:48:19 -04001612 }
1613
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02001614 out_blk = img_open("target", out_filename, out_fmt, flags, true, quiet);
1615 if (!out_blk) {
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001616 ret = -1;
1617 goto out;
1618 }
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02001619 out_bs = blk_bs(out_blk);
bellardea2384d2004-08-01 21:59:26 +00001620
balrog926c2d22007-10-31 01:11:44 +00001621 bs_i = 0;
1622 bs_offset = 0;
Peter Lievenf2521c92013-11-27 11:07:06 +01001623
1624 /* increase bufsectors from the default 4096 (2M) if opt_transfer_length
1625 * or discard_alignment of the out_bs is greater. Limit to 32768 (16MB)
1626 * as maximum. */
1627 bufsectors = MIN(32768,
1628 MAX(bufsectors, MAX(out_bs->bl.opt_transfer_length,
1629 out_bs->bl.discard_alignment))
1630 );
1631
Max Reitzf1d3cd72015-02-05 13:58:18 -05001632 buf = blk_blockalign(out_blk, bufsectors * BDRV_SECTOR_SIZE);
balrog926c2d22007-10-31 01:11:44 +00001633
Alexandre Derumierb2e10492013-09-02 19:07:24 +01001634 if (skip_create) {
Max Reitzf1d3cd72015-02-05 13:58:18 -05001635 int64_t output_sectors = blk_nb_sectors(out_blk);
Markus Armbruster43716fa2014-06-26 13:23:21 +02001636 if (output_sectors < 0) {
Alexandre Derumierb2e10492013-09-02 19:07:24 +01001637 error_report("unable to get output image length: %s\n",
Markus Armbruster43716fa2014-06-26 13:23:21 +02001638 strerror(-output_sectors));
Alexandre Derumierb2e10492013-09-02 19:07:24 +01001639 ret = -1;
1640 goto out;
Markus Armbruster43716fa2014-06-26 13:23:21 +02001641 } else if (output_sectors < total_sectors) {
Alexandre Derumierb2e10492013-09-02 19:07:24 +01001642 error_report("output file is smaller than input file");
1643 ret = -1;
1644 goto out;
1645 }
1646 }
1647
Peter Lieven24f833c2013-11-27 11:07:07 +01001648 cluster_sectors = 0;
1649 ret = bdrv_get_info(out_bs, &bdi);
1650 if (ret < 0) {
1651 if (compress) {
Jes Sorensen15654a62010-12-16 14:31:53 +01001652 error_report("could not get block driver info");
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001653 goto out;
1654 }
Peter Lieven24f833c2013-11-27 11:07:07 +01001655 } else {
Fam Zheng85f49ca2014-05-06 21:08:43 +08001656 compress = compress || bdi.needs_compressed_writes;
Peter Lieven24f833c2013-11-27 11:07:07 +01001657 cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE;
1658 }
1659
1660 if (compress) {
1661 if (cluster_sectors <= 0 || cluster_sectors > bufsectors) {
Jes Sorensen15654a62010-12-16 14:31:53 +01001662 error_report("invalid cluster size");
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001663 ret = -1;
1664 goto out;
1665 }
bellardea2384d2004-08-01 21:59:26 +00001666 sector_num = 0;
Jes Sorensen6b837bc2011-03-30 14:16:25 +02001667
1668 nb_sectors = total_sectors;
Jes Sorensen6b837bc2011-03-30 14:16:25 +02001669
bellardea2384d2004-08-01 21:59:26 +00001670 for(;;) {
balrog926c2d22007-10-31 01:11:44 +00001671 int64_t bs_num;
1672 int remainder;
1673 uint8_t *buf2;
1674
bellardea2384d2004-08-01 21:59:26 +00001675 nb_sectors = total_sectors - sector_num;
1676 if (nb_sectors <= 0)
1677 break;
1678 if (nb_sectors >= cluster_sectors)
1679 n = cluster_sectors;
1680 else
1681 n = nb_sectors;
balrog926c2d22007-10-31 01:11:44 +00001682
1683 bs_num = sector_num - bs_offset;
1684 assert (bs_num >= 0);
1685 remainder = n;
1686 buf2 = buf;
1687 while (remainder > 0) {
1688 int nlow;
Markus Armbrusterd739f1c2014-06-26 13:23:24 +02001689 while (bs_num == bs_sectors[bs_i]) {
1690 bs_offset += bs_sectors[bs_i];
balrog926c2d22007-10-31 01:11:44 +00001691 bs_i++;
1692 assert (bs_i < bs_n);
balrog926c2d22007-10-31 01:11:44 +00001693 bs_num = 0;
Blue Swirl0bfcd592010-05-22 08:02:12 +00001694 /* printf("changing part: sector_num=%" PRId64 ", "
1695 "bs_i=%d, bs_offset=%" PRId64 ", bs_sectors=%" PRId64
Markus Armbrusterd739f1c2014-06-26 13:23:24 +02001696 "\n", sector_num, bs_i, bs_offset, bs_sectors[bs_i]); */
balrog926c2d22007-10-31 01:11:44 +00001697 }
Markus Armbrusterd739f1c2014-06-26 13:23:24 +02001698 assert (bs_num < bs_sectors[bs_i]);
balrog926c2d22007-10-31 01:11:44 +00001699
Markus Armbrusterd739f1c2014-06-26 13:23:24 +02001700 nlow = remainder > bs_sectors[bs_i] - bs_num
1701 ? bs_sectors[bs_i] - bs_num : remainder;
balrog926c2d22007-10-31 01:11:44 +00001702
Max Reitzf1d3cd72015-02-05 13:58:18 -05001703 ret = blk_read(blk[bs_i], bs_num, buf2, nlow);
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001704 if (ret < 0) {
Stefan Hajnoczi3fba9d82011-08-17 17:41:09 +01001705 error_report("error while reading sector %" PRId64 ": %s",
1706 bs_num, strerror(-ret));
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001707 goto out;
1708 }
balrog926c2d22007-10-31 01:11:44 +00001709
1710 buf2 += nlow * 512;
1711 bs_num += nlow;
1712
1713 remainder -= nlow;
1714 }
1715 assert (remainder == 0);
1716
Stefan Hajnoczi54f106d2013-04-15 17:17:33 +02001717 if (!buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)) {
Max Reitzf1d3cd72015-02-05 13:58:18 -05001718 ret = blk_write_compressed(out_blk, sector_num, buf, n);
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001719 if (ret != 0) {
Stefan Hajnoczi3fba9d82011-08-17 17:41:09 +01001720 error_report("error while compressing sector %" PRId64
1721 ": %s", sector_num, strerror(-ret));
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001722 goto out;
1723 }
bellardea2384d2004-08-01 21:59:26 +00001724 }
1725 sector_num += n;
Peter Lieven13c28af2013-11-27 11:07:01 +01001726 qemu_progress_print(100.0 * sector_num / total_sectors, 0);
bellardea2384d2004-08-01 21:59:26 +00001727 }
bellardfaea38e2006-08-05 21:31:00 +00001728 /* signal EOF to align */
Max Reitzf1d3cd72015-02-05 13:58:18 -05001729 blk_write_compressed(out_blk, 0, NULL, 0);
bellardea2384d2004-08-01 21:59:26 +00001730 } else {
Peter Lieven802c3d42013-12-05 15:54:53 +01001731 int64_t sectors_to_read, sectors_read, sector_num_next_status;
1732 bool count_allocated_sectors;
Peter Lieven11b66992013-10-24 12:07:05 +02001733 int has_zero_init = min_sparse ? bdrv_has_zero_init(out_bs) : 0;
Kevin Wolff2feebb2010-04-14 17:30:35 +02001734
Peter Lieven5a37b602013-10-24 12:07:06 +02001735 if (!has_zero_init && bdrv_can_write_zeroes_with_unmap(out_bs)) {
1736 ret = bdrv_make_zero(out_bs, BDRV_REQ_MAY_UNMAP);
1737 if (ret < 0) {
1738 goto out;
1739 }
1740 has_zero_init = 1;
1741 }
1742
Peter Lieven802c3d42013-12-05 15:54:53 +01001743 sectors_to_read = total_sectors;
1744 count_allocated_sectors = progress && (out_baseimg || has_zero_init);
1745restart:
thsf58c7b32008-06-05 21:53:49 +00001746 sector_num = 0; // total number of sectors converted so far
Peter Lieven802c3d42013-12-05 15:54:53 +01001747 sectors_read = 0;
1748 sector_num_next_status = 0;
Jes Sorensen6b837bc2011-03-30 14:16:25 +02001749
bellardea2384d2004-08-01 21:59:26 +00001750 for(;;) {
1751 nb_sectors = total_sectors - sector_num;
Jes Sorensenb8fb60d2010-12-06 15:25:39 +01001752 if (nb_sectors <= 0) {
Peter Lieven802c3d42013-12-05 15:54:53 +01001753 if (count_allocated_sectors) {
1754 sectors_to_read = sectors_read;
1755 count_allocated_sectors = false;
1756 goto restart;
1757 }
Peter Lieven13c28af2013-11-27 11:07:01 +01001758 ret = 0;
bellardea2384d2004-08-01 21:59:26 +00001759 break;
Jes Sorensenb8fb60d2010-12-06 15:25:39 +01001760 }
balrog926c2d22007-10-31 01:11:44 +00001761
Markus Armbrusterd739f1c2014-06-26 13:23:24 +02001762 while (sector_num - bs_offset >= bs_sectors[bs_i]) {
1763 bs_offset += bs_sectors[bs_i];
balrog926c2d22007-10-31 01:11:44 +00001764 bs_i ++;
1765 assert (bs_i < bs_n);
Blue Swirl0bfcd592010-05-22 08:02:12 +00001766 /* printf("changing part: sector_num=%" PRId64 ", bs_i=%d, "
1767 "bs_offset=%" PRId64 ", bs_sectors=%" PRId64 "\n",
Markus Armbrusterd739f1c2014-06-26 13:23:24 +02001768 sector_num, bs_i, bs_offset, bs_sectors[bs_i]); */
balrog926c2d22007-10-31 01:11:44 +00001769 }
1770
Peter Lieven13c28af2013-11-27 11:07:01 +01001771 if ((out_baseimg || has_zero_init) &&
1772 sector_num >= sector_num_next_status) {
1773 n = nb_sectors > INT_MAX ? INT_MAX : nb_sectors;
1774 ret = bdrv_get_block_status(bs[bs_i], sector_num - bs_offset,
1775 n, &n1);
Paolo Bonzinie4a86f82013-09-04 19:00:26 +02001776 if (ret < 0) {
Peter Lieven13c28af2013-11-27 11:07:01 +01001777 error_report("error while reading block status of sector %"
1778 PRId64 ": %s", sector_num - bs_offset,
1779 strerror(-ret));
Paolo Bonzinie4a86f82013-09-04 19:00:26 +02001780 goto out;
aliguori93c65b42009-04-05 17:40:43 +00001781 }
Peter Lieven13c28af2013-11-27 11:07:01 +01001782 /* If the output image is zero initialized, we are not working
1783 * on a shared base and the input is zero we can skip the next
1784 * n1 sectors */
1785 if (has_zero_init && !out_baseimg && (ret & BDRV_BLOCK_ZERO)) {
Paolo Bonzinie4a86f82013-09-04 19:00:26 +02001786 sector_num += n1;
1787 continue;
1788 }
Peter Lieven13c28af2013-11-27 11:07:01 +01001789 /* If the output image is being created as a copy on write
1790 * image, assume that sectors which are unallocated in the
1791 * input image are present in both the output's and input's
1792 * base images (no need to copy them). */
1793 if (out_baseimg) {
1794 if (!(ret & BDRV_BLOCK_DATA)) {
1795 sector_num += n1;
1796 continue;
1797 }
1798 /* The next 'n1' sectors are allocated in the input image.
1799 * Copy only those as they may be followed by unallocated
1800 * sectors. */
1801 nb_sectors = n1;
1802 }
1803 /* avoid redundant callouts to get_block_status */
1804 sector_num_next_status = sector_num + n1;
thsf58c7b32008-06-05 21:53:49 +00001805 }
1806
Peter Lievenf2521c92013-11-27 11:07:06 +01001807 n = MIN(nb_sectors, bufsectors);
Peter Lieven24f833c2013-11-27 11:07:07 +01001808
1809 /* round down request length to an aligned sector, but
1810 * do not bother doing this on short requests. They happen
1811 * when we found an all-zero area, and the next sector to
1812 * write will not be sector_num + n. */
1813 if (cluster_sectors > 0 && n >= cluster_sectors) {
1814 int64_t next_aligned_sector = (sector_num + n);
1815 next_aligned_sector -= next_aligned_sector % cluster_sectors;
1816 if (sector_num + n > next_aligned_sector) {
1817 n = next_aligned_sector - sector_num;
1818 }
1819 }
1820
Markus Armbrusterd739f1c2014-06-26 13:23:24 +02001821 n = MIN(n, bs_sectors[bs_i] - (sector_num - bs_offset));
Peter Lieven13c28af2013-11-27 11:07:01 +01001822
Peter Lieven802c3d42013-12-05 15:54:53 +01001823 sectors_read += n;
1824 if (count_allocated_sectors) {
1825 sector_num += n;
1826 continue;
1827 }
1828
1829 n1 = n;
Max Reitzf1d3cd72015-02-05 13:58:18 -05001830 ret = blk_read(blk[bs_i], sector_num - bs_offset, buf, n);
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001831 if (ret < 0) {
Stefan Hajnoczi3fba9d82011-08-17 17:41:09 +01001832 error_report("error while reading sector %" PRId64 ": %s",
1833 sector_num - bs_offset, strerror(-ret));
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001834 goto out;
1835 }
bellardea2384d2004-08-01 21:59:26 +00001836 /* NOTE: at the same time we convert, we do not write zero
1837 sectors to have a chance to compress the image. Ideally, we
1838 should add a specific call to have the info to go faster */
1839 buf1 = buf;
1840 while (n > 0) {
Paolo Bonzini11212d82013-09-04 19:00:27 +02001841 if (!has_zero_init ||
Kevin Wolfa22f1232011-08-26 15:27:13 +02001842 is_allocated_sectors_min(buf1, n, &n1, min_sparse)) {
Max Reitzf1d3cd72015-02-05 13:58:18 -05001843 ret = blk_write(out_blk, sector_num, buf1, n1);
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001844 if (ret < 0) {
Stefan Hajnoczi3fba9d82011-08-17 17:41:09 +01001845 error_report("error while writing sector %" PRId64
1846 ": %s", sector_num, strerror(-ret));
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001847 goto out;
1848 }
bellardea2384d2004-08-01 21:59:26 +00001849 }
1850 sector_num += n1;
1851 n -= n1;
1852 buf1 += n1 * 512;
1853 }
Peter Lieven802c3d42013-12-05 15:54:53 +01001854 qemu_progress_print(100.0 * sectors_read / sectors_to_read, 0);
bellardea2384d2004-08-01 21:59:26 +00001855 }
1856 }
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001857out:
Peter Lieven13c28af2013-11-27 11:07:01 +01001858 if (!ret) {
1859 qemu_progress_print(100, 0);
1860 }
Jes Sorensen6b837bc2011-03-30 14:16:25 +02001861 qemu_progress_end();
Chunyan Liu83d05212014-06-05 17:20:51 +08001862 qemu_opts_del(opts);
1863 qemu_opts_free(create_opts);
Kevin Wolfbb1c0592011-08-08 14:09:12 +02001864 qemu_vfree(buf);
Markus Armbrusterfbf28a42014-09-29 16:07:55 +02001865 qemu_opts_del(sn_opts);
Markus Armbruster26f54e92014-10-07 13:59:04 +02001866 blk_unref(out_blk);
Markus Armbruster9ba10c92014-10-07 13:59:08 +02001867 g_free(bs);
Markus Armbruster26f54e92014-10-07 13:59:04 +02001868 if (blk) {
1869 for (bs_i = 0; bs_i < bs_n; bs_i++) {
1870 blk_unref(blk[bs_i]);
1871 }
1872 g_free(blk);
1873 }
Markus Armbrusterd739f1c2014-06-26 13:23:24 +02001874 g_free(bs_sectors);
Kevin Wolf64bb01a2014-03-03 14:54:07 +01001875fail_getopt:
1876 g_free(options);
1877
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09001878 if (ret) {
1879 return 1;
1880 }
bellardea2384d2004-08-01 21:59:26 +00001881 return 0;
1882}
1883
bellard57d1a2b2004-08-03 21:15:11 +00001884
bellardfaea38e2006-08-05 21:31:00 +00001885static void dump_snapshots(BlockDriverState *bs)
1886{
1887 QEMUSnapshotInfo *sn_tab, *sn;
1888 int nb_sns, i;
bellardfaea38e2006-08-05 21:31:00 +00001889
1890 nb_sns = bdrv_snapshot_list(bs, &sn_tab);
1891 if (nb_sns <= 0)
1892 return;
1893 printf("Snapshot list:\n");
Wenchao Xia5b917042013-05-25 11:09:45 +08001894 bdrv_snapshot_dump(fprintf, stdout, NULL);
1895 printf("\n");
bellardfaea38e2006-08-05 21:31:00 +00001896 for(i = 0; i < nb_sns; i++) {
1897 sn = &sn_tab[i];
Wenchao Xia5b917042013-05-25 11:09:45 +08001898 bdrv_snapshot_dump(fprintf, stdout, sn);
1899 printf("\n");
bellardfaea38e2006-08-05 21:31:00 +00001900 }
Anthony Liguori7267c092011-08-20 22:09:37 -05001901 g_free(sn_tab);
bellardfaea38e2006-08-05 21:31:00 +00001902}
1903
Stefan Hajnoczi9699bf02012-10-17 14:02:31 +02001904static void dump_json_image_info_list(ImageInfoList *list)
1905{
Markus Armbruster4399c432014-04-25 16:50:32 +02001906 Error *local_err = NULL;
Stefan Hajnoczi9699bf02012-10-17 14:02:31 +02001907 QString *str;
1908 QmpOutputVisitor *ov = qmp_output_visitor_new();
1909 QObject *obj;
1910 visit_type_ImageInfoList(qmp_output_get_visitor(ov),
Markus Armbruster4399c432014-04-25 16:50:32 +02001911 &list, NULL, &local_err);
Stefan Hajnoczi9699bf02012-10-17 14:02:31 +02001912 obj = qmp_output_get_qobject(ov);
1913 str = qobject_to_json_pretty(obj);
1914 assert(str != NULL);
1915 printf("%s\n", qstring_get_str(str));
1916 qobject_decref(obj);
1917 qmp_output_visitor_cleanup(ov);
1918 QDECREF(str);
1919}
1920
Benoît Canetc054b3f2012-09-05 13:09:02 +02001921static void dump_json_image_info(ImageInfo *info)
1922{
Markus Armbruster4399c432014-04-25 16:50:32 +02001923 Error *local_err = NULL;
Benoît Canetc054b3f2012-09-05 13:09:02 +02001924 QString *str;
1925 QmpOutputVisitor *ov = qmp_output_visitor_new();
1926 QObject *obj;
1927 visit_type_ImageInfo(qmp_output_get_visitor(ov),
Markus Armbruster4399c432014-04-25 16:50:32 +02001928 &info, NULL, &local_err);
Benoît Canetc054b3f2012-09-05 13:09:02 +02001929 obj = qmp_output_get_qobject(ov);
1930 str = qobject_to_json_pretty(obj);
1931 assert(str != NULL);
1932 printf("%s\n", qstring_get_str(str));
1933 qobject_decref(obj);
1934 qmp_output_visitor_cleanup(ov);
1935 QDECREF(str);
1936}
1937
Stefan Hajnoczi9699bf02012-10-17 14:02:31 +02001938static void dump_human_image_info_list(ImageInfoList *list)
1939{
1940 ImageInfoList *elem;
1941 bool delim = false;
1942
1943 for (elem = list; elem; elem = elem->next) {
1944 if (delim) {
1945 printf("\n");
1946 }
1947 delim = true;
1948
Wenchao Xia5b917042013-05-25 11:09:45 +08001949 bdrv_image_info_dump(fprintf, stdout, elem->value);
Stefan Hajnoczi9699bf02012-10-17 14:02:31 +02001950 }
1951}
1952
1953static gboolean str_equal_func(gconstpointer a, gconstpointer b)
1954{
1955 return strcmp(a, b) == 0;
1956}
1957
1958/**
1959 * Open an image file chain and return an ImageInfoList
1960 *
1961 * @filename: topmost image filename
1962 * @fmt: topmost image format (may be NULL to autodetect)
1963 * @chain: true - enumerate entire backing file chain
1964 * false - only topmost image file
1965 *
1966 * Returns a list of ImageInfo objects or NULL if there was an error opening an
1967 * image file. If there was an error a message will have been printed to
1968 * stderr.
1969 */
1970static ImageInfoList *collect_image_info_list(const char *filename,
1971 const char *fmt,
1972 bool chain)
1973{
1974 ImageInfoList *head = NULL;
1975 ImageInfoList **last = &head;
1976 GHashTable *filenames;
Wenchao Xia43526ec2013-06-06 12:27:58 +08001977 Error *err = NULL;
Stefan Hajnoczi9699bf02012-10-17 14:02:31 +02001978
1979 filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL);
1980
1981 while (filename) {
Markus Armbruster26f54e92014-10-07 13:59:04 +02001982 BlockBackend *blk;
Stefan Hajnoczi9699bf02012-10-17 14:02:31 +02001983 BlockDriverState *bs;
1984 ImageInfo *info;
1985 ImageInfoList *elem;
1986
1987 if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) {
1988 error_report("Backing file '%s' creates an infinite loop.",
1989 filename);
1990 goto err;
1991 }
1992 g_hash_table_insert(filenames, (gpointer)filename, NULL);
1993
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02001994 blk = img_open("image", filename, fmt,
1995 BDRV_O_FLAGS | BDRV_O_NO_BACKING, false, false);
1996 if (!blk) {
Stefan Hajnoczi9699bf02012-10-17 14:02:31 +02001997 goto err;
1998 }
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02001999 bs = blk_bs(blk);
Stefan Hajnoczi9699bf02012-10-17 14:02:31 +02002000
Wenchao Xia43526ec2013-06-06 12:27:58 +08002001 bdrv_query_image_info(bs, &info, &err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01002002 if (err) {
Markus Armbruster565f65d2015-02-12 13:55:05 +01002003 error_report_err(err);
Markus Armbruster26f54e92014-10-07 13:59:04 +02002004 blk_unref(blk);
Wenchao Xia43526ec2013-06-06 12:27:58 +08002005 goto err;
Wenchao Xiafb0ed452013-06-06 12:27:57 +08002006 }
Stefan Hajnoczi9699bf02012-10-17 14:02:31 +02002007
2008 elem = g_new0(ImageInfoList, 1);
2009 elem->value = info;
2010 *last = elem;
2011 last = &elem->next;
2012
Markus Armbruster26f54e92014-10-07 13:59:04 +02002013 blk_unref(blk);
Stefan Hajnoczi9699bf02012-10-17 14:02:31 +02002014
2015 filename = fmt = NULL;
2016 if (chain) {
2017 if (info->has_full_backing_filename) {
2018 filename = info->full_backing_filename;
2019 } else if (info->has_backing_filename) {
2020 filename = info->backing_filename;
2021 }
2022 if (info->has_backing_filename_format) {
2023 fmt = info->backing_filename_format;
2024 }
2025 }
2026 }
2027 g_hash_table_destroy(filenames);
2028 return head;
2029
2030err:
2031 qapi_free_ImageInfoList(head);
2032 g_hash_table_destroy(filenames);
2033 return NULL;
2034}
2035
Benoît Canetc054b3f2012-09-05 13:09:02 +02002036static int img_info(int argc, char **argv)
2037{
2038 int c;
2039 OutputFormat output_format = OFORMAT_HUMAN;
Stefan Hajnoczi9699bf02012-10-17 14:02:31 +02002040 bool chain = false;
Benoît Canetc054b3f2012-09-05 13:09:02 +02002041 const char *filename, *fmt, *output;
Stefan Hajnoczi9699bf02012-10-17 14:02:31 +02002042 ImageInfoList *list;
Benoît Canetc054b3f2012-09-05 13:09:02 +02002043
bellardea2384d2004-08-01 21:59:26 +00002044 fmt = NULL;
Benoît Canetc054b3f2012-09-05 13:09:02 +02002045 output = NULL;
bellardea2384d2004-08-01 21:59:26 +00002046 for(;;) {
Benoît Canetc054b3f2012-09-05 13:09:02 +02002047 int option_index = 0;
2048 static const struct option long_options[] = {
2049 {"help", no_argument, 0, 'h'},
2050 {"format", required_argument, 0, 'f'},
2051 {"output", required_argument, 0, OPTION_OUTPUT},
Stefan Hajnoczi9699bf02012-10-17 14:02:31 +02002052 {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN},
Benoît Canetc054b3f2012-09-05 13:09:02 +02002053 {0, 0, 0, 0}
2054 };
2055 c = getopt_long(argc, argv, "f:h",
2056 long_options, &option_index);
Jes Sorensenb8fb60d2010-12-06 15:25:39 +01002057 if (c == -1) {
bellardea2384d2004-08-01 21:59:26 +00002058 break;
Jes Sorensenb8fb60d2010-12-06 15:25:39 +01002059 }
bellardea2384d2004-08-01 21:59:26 +00002060 switch(c) {
Jes Sorensenef873942010-12-06 15:25:40 +01002061 case '?':
bellardea2384d2004-08-01 21:59:26 +00002062 case 'h':
2063 help();
2064 break;
2065 case 'f':
2066 fmt = optarg;
2067 break;
Benoît Canetc054b3f2012-09-05 13:09:02 +02002068 case OPTION_OUTPUT:
2069 output = optarg;
2070 break;
Stefan Hajnoczi9699bf02012-10-17 14:02:31 +02002071 case OPTION_BACKING_CHAIN:
2072 chain = true;
2073 break;
bellardea2384d2004-08-01 21:59:26 +00002074 }
2075 }
Kevin Wolffc11eb22013-08-05 10:53:04 +02002076 if (optind != argc - 1) {
Fam Zhengac1307a2014-04-22 13:36:11 +08002077 error_exit("Expecting one image file name");
Jes Sorensenb8fb60d2010-12-06 15:25:39 +01002078 }
bellardea2384d2004-08-01 21:59:26 +00002079 filename = argv[optind++];
2080
Benoît Canetc054b3f2012-09-05 13:09:02 +02002081 if (output && !strcmp(output, "json")) {
2082 output_format = OFORMAT_JSON;
2083 } else if (output && !strcmp(output, "human")) {
2084 output_format = OFORMAT_HUMAN;
2085 } else if (output) {
2086 error_report("--output must be used with human or json as argument.");
2087 return 1;
2088 }
2089
Stefan Hajnoczi9699bf02012-10-17 14:02:31 +02002090 list = collect_image_info_list(filename, fmt, chain);
2091 if (!list) {
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09002092 return 1;
2093 }
Benoît Canetc054b3f2012-09-05 13:09:02 +02002094
Benoît Canetc054b3f2012-09-05 13:09:02 +02002095 switch (output_format) {
2096 case OFORMAT_HUMAN:
Stefan Hajnoczi9699bf02012-10-17 14:02:31 +02002097 dump_human_image_info_list(list);
Benoît Canetc054b3f2012-09-05 13:09:02 +02002098 break;
2099 case OFORMAT_JSON:
Stefan Hajnoczi9699bf02012-10-17 14:02:31 +02002100 if (chain) {
2101 dump_json_image_info_list(list);
2102 } else {
2103 dump_json_image_info(list->value);
2104 }
Benoît Canetc054b3f2012-09-05 13:09:02 +02002105 break;
Jes Sorensenb8fb60d2010-12-06 15:25:39 +01002106 }
Benoît Canetc054b3f2012-09-05 13:09:02 +02002107
Stefan Hajnoczi9699bf02012-10-17 14:02:31 +02002108 qapi_free_ImageInfoList(list);
bellardea2384d2004-08-01 21:59:26 +00002109 return 0;
2110}
2111
Paolo Bonzini4c93a13b2013-09-04 19:00:33 +02002112
2113typedef struct MapEntry {
2114 int flags;
2115 int depth;
2116 int64_t start;
2117 int64_t length;
2118 int64_t offset;
2119 BlockDriverState *bs;
2120} MapEntry;
2121
2122static void dump_map_entry(OutputFormat output_format, MapEntry *e,
2123 MapEntry *next)
2124{
2125 switch (output_format) {
2126 case OFORMAT_HUMAN:
2127 if ((e->flags & BDRV_BLOCK_DATA) &&
2128 !(e->flags & BDRV_BLOCK_OFFSET_VALID)) {
2129 error_report("File contains external, encrypted or compressed clusters.");
2130 exit(1);
2131 }
2132 if ((e->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) == BDRV_BLOCK_DATA) {
2133 printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n",
2134 e->start, e->length, e->offset, e->bs->filename);
2135 }
2136 /* This format ignores the distinction between 0, ZERO and ZERO|DATA.
2137 * Modify the flags here to allow more coalescing.
2138 */
2139 if (next &&
2140 (next->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) != BDRV_BLOCK_DATA) {
2141 next->flags &= ~BDRV_BLOCK_DATA;
2142 next->flags |= BDRV_BLOCK_ZERO;
2143 }
2144 break;
2145 case OFORMAT_JSON:
2146 printf("%s{ \"start\": %"PRId64", \"length\": %"PRId64", \"depth\": %d,"
2147 " \"zero\": %s, \"data\": %s",
2148 (e->start == 0 ? "[" : ",\n"),
2149 e->start, e->length, e->depth,
2150 (e->flags & BDRV_BLOCK_ZERO) ? "true" : "false",
2151 (e->flags & BDRV_BLOCK_DATA) ? "true" : "false");
2152 if (e->flags & BDRV_BLOCK_OFFSET_VALID) {
Paolo Bonzinic745bfb2013-09-11 18:47:52 +02002153 printf(", \"offset\": %"PRId64"", e->offset);
Paolo Bonzini4c93a13b2013-09-04 19:00:33 +02002154 }
2155 putchar('}');
2156
2157 if (!next) {
2158 printf("]\n");
2159 }
2160 break;
2161 }
2162}
2163
2164static int get_block_status(BlockDriverState *bs, int64_t sector_num,
2165 int nb_sectors, MapEntry *e)
2166{
2167 int64_t ret;
2168 int depth;
2169
2170 /* As an optimization, we could cache the current range of unallocated
2171 * clusters in each file of the chain, and avoid querying the same
2172 * range repeatedly.
2173 */
2174
2175 depth = 0;
2176 for (;;) {
2177 ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &nb_sectors);
2178 if (ret < 0) {
2179 return ret;
2180 }
2181 assert(nb_sectors);
2182 if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) {
2183 break;
2184 }
2185 bs = bs->backing_hd;
2186 if (bs == NULL) {
2187 ret = 0;
2188 break;
2189 }
2190
2191 depth++;
2192 }
2193
2194 e->start = sector_num * BDRV_SECTOR_SIZE;
2195 e->length = nb_sectors * BDRV_SECTOR_SIZE;
2196 e->flags = ret & ~BDRV_BLOCK_OFFSET_MASK;
2197 e->offset = ret & BDRV_BLOCK_OFFSET_MASK;
2198 e->depth = depth;
2199 e->bs = bs;
2200 return 0;
2201}
2202
2203static int img_map(int argc, char **argv)
2204{
2205 int c;
2206 OutputFormat output_format = OFORMAT_HUMAN;
Markus Armbruster26f54e92014-10-07 13:59:04 +02002207 BlockBackend *blk;
Paolo Bonzini4c93a13b2013-09-04 19:00:33 +02002208 BlockDriverState *bs;
2209 const char *filename, *fmt, *output;
2210 int64_t length;
2211 MapEntry curr = { .length = 0 }, next;
2212 int ret = 0;
2213
2214 fmt = NULL;
2215 output = NULL;
2216 for (;;) {
2217 int option_index = 0;
2218 static const struct option long_options[] = {
2219 {"help", no_argument, 0, 'h'},
2220 {"format", required_argument, 0, 'f'},
2221 {"output", required_argument, 0, OPTION_OUTPUT},
2222 {0, 0, 0, 0}
2223 };
2224 c = getopt_long(argc, argv, "f:h",
2225 long_options, &option_index);
2226 if (c == -1) {
2227 break;
2228 }
2229 switch (c) {
2230 case '?':
2231 case 'h':
2232 help();
2233 break;
2234 case 'f':
2235 fmt = optarg;
2236 break;
2237 case OPTION_OUTPUT:
2238 output = optarg;
2239 break;
2240 }
2241 }
Fam Zhengac1307a2014-04-22 13:36:11 +08002242 if (optind != argc - 1) {
2243 error_exit("Expecting one image file name");
Paolo Bonzini4c93a13b2013-09-04 19:00:33 +02002244 }
Fam Zhengac1307a2014-04-22 13:36:11 +08002245 filename = argv[optind];
Paolo Bonzini4c93a13b2013-09-04 19:00:33 +02002246
2247 if (output && !strcmp(output, "json")) {
2248 output_format = OFORMAT_JSON;
2249 } else if (output && !strcmp(output, "human")) {
2250 output_format = OFORMAT_HUMAN;
2251 } else if (output) {
2252 error_report("--output must be used with human or json as argument.");
2253 return 1;
2254 }
2255
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02002256 blk = img_open("image", filename, fmt, BDRV_O_FLAGS, true, false);
2257 if (!blk) {
2258 return 1;
Paolo Bonzini4c93a13b2013-09-04 19:00:33 +02002259 }
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02002260 bs = blk_bs(blk);
Paolo Bonzini4c93a13b2013-09-04 19:00:33 +02002261
2262 if (output_format == OFORMAT_HUMAN) {
2263 printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File");
2264 }
2265
Max Reitzf1d3cd72015-02-05 13:58:18 -05002266 length = blk_getlength(blk);
Paolo Bonzini4c93a13b2013-09-04 19:00:33 +02002267 while (curr.start + curr.length < length) {
2268 int64_t nsectors_left;
2269 int64_t sector_num;
2270 int n;
2271
2272 sector_num = (curr.start + curr.length) >> BDRV_SECTOR_BITS;
2273
2274 /* Probe up to 1 GiB at a time. */
2275 nsectors_left = DIV_ROUND_UP(length, BDRV_SECTOR_SIZE) - sector_num;
2276 n = MIN(1 << (30 - BDRV_SECTOR_BITS), nsectors_left);
2277 ret = get_block_status(bs, sector_num, n, &next);
2278
2279 if (ret < 0) {
2280 error_report("Could not read file metadata: %s", strerror(-ret));
2281 goto out;
2282 }
2283
2284 if (curr.length != 0 && curr.flags == next.flags &&
2285 curr.depth == next.depth &&
2286 ((curr.flags & BDRV_BLOCK_OFFSET_VALID) == 0 ||
2287 curr.offset + curr.length == next.offset)) {
2288 curr.length += next.length;
2289 continue;
2290 }
2291
2292 if (curr.length > 0) {
2293 dump_map_entry(output_format, &curr, &next);
2294 }
2295 curr = next;
2296 }
2297
2298 dump_map_entry(output_format, &curr, NULL);
2299
2300out:
Markus Armbruster26f54e92014-10-07 13:59:04 +02002301 blk_unref(blk);
Paolo Bonzini4c93a13b2013-09-04 19:00:33 +02002302 return ret < 0;
2303}
2304
aliguorif7b4a942009-01-07 17:40:15 +00002305#define SNAPSHOT_LIST 1
2306#define SNAPSHOT_CREATE 2
2307#define SNAPSHOT_APPLY 3
2308#define SNAPSHOT_DELETE 4
2309
Stuart Brady153859b2009-06-07 00:42:17 +01002310static int img_snapshot(int argc, char **argv)
aliguorif7b4a942009-01-07 17:40:15 +00002311{
Markus Armbruster26f54e92014-10-07 13:59:04 +02002312 BlockBackend *blk;
aliguorif7b4a942009-01-07 17:40:15 +00002313 BlockDriverState *bs;
2314 QEMUSnapshotInfo sn;
2315 char *filename, *snapshot_name = NULL;
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09002316 int c, ret = 0, bdrv_oflags;
aliguorif7b4a942009-01-07 17:40:15 +00002317 int action = 0;
2318 qemu_timeval tv;
Miroslav Rezaninaf382d432013-02-13 09:09:40 +01002319 bool quiet = false;
Wenchao Xiaa89d89d2013-09-11 14:04:33 +08002320 Error *err = NULL;
aliguorif7b4a942009-01-07 17:40:15 +00002321
Kevin Wolf710da702011-01-10 12:33:02 +01002322 bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR;
aliguorif7b4a942009-01-07 17:40:15 +00002323 /* Parse commandline parameters */
2324 for(;;) {
Miroslav Rezaninaf382d432013-02-13 09:09:40 +01002325 c = getopt(argc, argv, "la:c:d:hq");
Jes Sorensenb8fb60d2010-12-06 15:25:39 +01002326 if (c == -1) {
aliguorif7b4a942009-01-07 17:40:15 +00002327 break;
Jes Sorensenb8fb60d2010-12-06 15:25:39 +01002328 }
aliguorif7b4a942009-01-07 17:40:15 +00002329 switch(c) {
Jes Sorensenef873942010-12-06 15:25:40 +01002330 case '?':
aliguorif7b4a942009-01-07 17:40:15 +00002331 case 'h':
2332 help();
Stuart Brady153859b2009-06-07 00:42:17 +01002333 return 0;
aliguorif7b4a942009-01-07 17:40:15 +00002334 case 'l':
2335 if (action) {
Fam Zhengac1307a2014-04-22 13:36:11 +08002336 error_exit("Cannot mix '-l', '-a', '-c', '-d'");
Stuart Brady153859b2009-06-07 00:42:17 +01002337 return 0;
aliguorif7b4a942009-01-07 17:40:15 +00002338 }
2339 action = SNAPSHOT_LIST;
Naphtali Spreif5edb012010-01-17 16:48:13 +02002340 bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */
aliguorif7b4a942009-01-07 17:40:15 +00002341 break;
2342 case 'a':
2343 if (action) {
Fam Zhengac1307a2014-04-22 13:36:11 +08002344 error_exit("Cannot mix '-l', '-a', '-c', '-d'");
Stuart Brady153859b2009-06-07 00:42:17 +01002345 return 0;
aliguorif7b4a942009-01-07 17:40:15 +00002346 }
2347 action = SNAPSHOT_APPLY;
2348 snapshot_name = optarg;
2349 break;
2350 case 'c':
2351 if (action) {
Fam Zhengac1307a2014-04-22 13:36:11 +08002352 error_exit("Cannot mix '-l', '-a', '-c', '-d'");
Stuart Brady153859b2009-06-07 00:42:17 +01002353 return 0;
aliguorif7b4a942009-01-07 17:40:15 +00002354 }
2355 action = SNAPSHOT_CREATE;
2356 snapshot_name = optarg;
2357 break;
2358 case 'd':
2359 if (action) {
Fam Zhengac1307a2014-04-22 13:36:11 +08002360 error_exit("Cannot mix '-l', '-a', '-c', '-d'");
Stuart Brady153859b2009-06-07 00:42:17 +01002361 return 0;
aliguorif7b4a942009-01-07 17:40:15 +00002362 }
2363 action = SNAPSHOT_DELETE;
2364 snapshot_name = optarg;
2365 break;
Miroslav Rezaninaf382d432013-02-13 09:09:40 +01002366 case 'q':
2367 quiet = true;
2368 break;
aliguorif7b4a942009-01-07 17:40:15 +00002369 }
2370 }
2371
Kevin Wolffc11eb22013-08-05 10:53:04 +02002372 if (optind != argc - 1) {
Fam Zhengac1307a2014-04-22 13:36:11 +08002373 error_exit("Expecting one image file name");
Jes Sorensenb8fb60d2010-12-06 15:25:39 +01002374 }
aliguorif7b4a942009-01-07 17:40:15 +00002375 filename = argv[optind++];
2376
2377 /* Open the image */
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02002378 blk = img_open("image", filename, NULL, bdrv_oflags, true, quiet);
2379 if (!blk) {
2380 return 1;
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09002381 }
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02002382 bs = blk_bs(blk);
aliguorif7b4a942009-01-07 17:40:15 +00002383
2384 /* Perform the requested action */
2385 switch(action) {
2386 case SNAPSHOT_LIST:
2387 dump_snapshots(bs);
2388 break;
2389
2390 case SNAPSHOT_CREATE:
2391 memset(&sn, 0, sizeof(sn));
2392 pstrcpy(sn.name, sizeof(sn.name), snapshot_name);
2393
2394 qemu_gettimeofday(&tv);
2395 sn.date_sec = tv.tv_sec;
2396 sn.date_nsec = tv.tv_usec * 1000;
2397
2398 ret = bdrv_snapshot_create(bs, &sn);
Jes Sorensenb8fb60d2010-12-06 15:25:39 +01002399 if (ret) {
Jes Sorensen15654a62010-12-16 14:31:53 +01002400 error_report("Could not create snapshot '%s': %d (%s)",
aliguorif7b4a942009-01-07 17:40:15 +00002401 snapshot_name, ret, strerror(-ret));
Jes Sorensenb8fb60d2010-12-06 15:25:39 +01002402 }
aliguorif7b4a942009-01-07 17:40:15 +00002403 break;
2404
2405 case SNAPSHOT_APPLY:
2406 ret = bdrv_snapshot_goto(bs, snapshot_name);
Jes Sorensenb8fb60d2010-12-06 15:25:39 +01002407 if (ret) {
Jes Sorensen15654a62010-12-16 14:31:53 +01002408 error_report("Could not apply snapshot '%s': %d (%s)",
aliguorif7b4a942009-01-07 17:40:15 +00002409 snapshot_name, ret, strerror(-ret));
Jes Sorensenb8fb60d2010-12-06 15:25:39 +01002410 }
aliguorif7b4a942009-01-07 17:40:15 +00002411 break;
2412
2413 case SNAPSHOT_DELETE:
Wenchao Xiaa89d89d2013-09-11 14:04:33 +08002414 bdrv_snapshot_delete_by_id_or_name(bs, snapshot_name, &err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01002415 if (err) {
Wenchao Xiaa89d89d2013-09-11 14:04:33 +08002416 error_report("Could not delete snapshot '%s': (%s)",
2417 snapshot_name, error_get_pretty(err));
2418 error_free(err);
2419 ret = 1;
Jes Sorensenb8fb60d2010-12-06 15:25:39 +01002420 }
aliguorif7b4a942009-01-07 17:40:15 +00002421 break;
2422 }
2423
2424 /* Cleanup */
Markus Armbruster26f54e92014-10-07 13:59:04 +02002425 blk_unref(blk);
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09002426 if (ret) {
2427 return 1;
2428 }
Stuart Brady153859b2009-06-07 00:42:17 +01002429 return 0;
aliguorif7b4a942009-01-07 17:40:15 +00002430}
2431
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002432static int img_rebase(int argc, char **argv)
2433{
Markus Armbruster26f54e92014-10-07 13:59:04 +02002434 BlockBackend *blk = NULL, *blk_old_backing = NULL, *blk_new_backing = NULL;
Max Reitzf1d3cd72015-02-05 13:58:18 -05002435 BlockDriverState *bs = NULL;
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002436 char *filename;
Max Reitz40055952014-07-22 22:58:42 +02002437 const char *fmt, *cache, *src_cache, *out_basefmt, *out_baseimg;
2438 int c, flags, src_flags, ret;
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002439 int unsafe = 0;
Jes Sorensen6b837bc2011-03-30 14:16:25 +02002440 int progress = 0;
Miroslav Rezaninaf382d432013-02-13 09:09:40 +01002441 bool quiet = false;
Max Reitz34b5d2c2013-09-05 14:45:29 +02002442 Error *local_err = NULL;
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002443
2444 /* Parse commandline parameters */
Kevin Wolfe53dbee2010-03-02 12:14:31 +01002445 fmt = NULL;
Federico Simoncelli661a0f72011-06-20 12:48:19 -04002446 cache = BDRV_DEFAULT_CACHE;
Max Reitz40055952014-07-22 22:58:42 +02002447 src_cache = BDRV_DEFAULT_CACHE;
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002448 out_baseimg = NULL;
2449 out_basefmt = NULL;
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002450 for(;;) {
Max Reitz40055952014-07-22 22:58:42 +02002451 c = getopt(argc, argv, "hf:F:b:upt:T:q");
Jes Sorensenb8fb60d2010-12-06 15:25:39 +01002452 if (c == -1) {
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002453 break;
Jes Sorensenb8fb60d2010-12-06 15:25:39 +01002454 }
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002455 switch(c) {
Jes Sorensenef873942010-12-06 15:25:40 +01002456 case '?':
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002457 case 'h':
2458 help();
2459 return 0;
Kevin Wolfe53dbee2010-03-02 12:14:31 +01002460 case 'f':
2461 fmt = optarg;
2462 break;
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002463 case 'F':
2464 out_basefmt = optarg;
2465 break;
2466 case 'b':
2467 out_baseimg = optarg;
2468 break;
2469 case 'u':
2470 unsafe = 1;
2471 break;
Jes Sorensen6b837bc2011-03-30 14:16:25 +02002472 case 'p':
2473 progress = 1;
2474 break;
Federico Simoncelli661a0f72011-06-20 12:48:19 -04002475 case 't':
2476 cache = optarg;
2477 break;
Max Reitz40055952014-07-22 22:58:42 +02002478 case 'T':
2479 src_cache = optarg;
2480 break;
Miroslav Rezaninaf382d432013-02-13 09:09:40 +01002481 case 'q':
2482 quiet = true;
2483 break;
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002484 }
2485 }
2486
Miroslav Rezaninaf382d432013-02-13 09:09:40 +01002487 if (quiet) {
2488 progress = 0;
2489 }
2490
Fam Zhengac1307a2014-04-22 13:36:11 +08002491 if (optind != argc - 1) {
2492 error_exit("Expecting one image file name");
2493 }
2494 if (!unsafe && !out_baseimg) {
2495 error_exit("Must specify backing file (-b) or use unsafe mode (-u)");
Jes Sorensenb8fb60d2010-12-06 15:25:39 +01002496 }
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002497 filename = argv[optind++];
2498
Jes Sorensen6b837bc2011-03-30 14:16:25 +02002499 qemu_progress_init(progress, 2.0);
2500 qemu_progress_print(0, 100);
2501
Federico Simoncelli661a0f72011-06-20 12:48:19 -04002502 flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0);
Stefan Hajnoczic3993cd2011-08-04 12:26:51 +01002503 ret = bdrv_parse_cache_flags(cache, &flags);
Federico Simoncelli661a0f72011-06-20 12:48:19 -04002504 if (ret < 0) {
2505 error_report("Invalid cache option: %s", cache);
Stefan Hajnoczi40ed35a2014-08-26 19:17:56 +01002506 goto out;
Federico Simoncelli661a0f72011-06-20 12:48:19 -04002507 }
2508
Max Reitz40055952014-07-22 22:58:42 +02002509 src_flags = BDRV_O_FLAGS;
2510 ret = bdrv_parse_cache_flags(src_cache, &src_flags);
2511 if (ret < 0) {
2512 error_report("Invalid source cache option: %s", src_cache);
Stefan Hajnoczi40ed35a2014-08-26 19:17:56 +01002513 goto out;
Max Reitz40055952014-07-22 22:58:42 +02002514 }
2515
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002516 /*
2517 * Open the images.
2518 *
2519 * Ignore the old backing file for unsafe rebase in case we want to correct
2520 * the reference to a renamed or moved backing file.
2521 */
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02002522 blk = img_open("image", filename, fmt, flags, true, quiet);
2523 if (!blk) {
Stefan Hajnoczi40ed35a2014-08-26 19:17:56 +01002524 ret = -1;
2525 goto out;
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09002526 }
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02002527 bs = blk_bs(blk);
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002528
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002529 if (out_basefmt != NULL) {
Max Reitz644483d2015-02-05 13:58:17 -05002530 if (bdrv_find_format(out_basefmt) == NULL) {
Jes Sorensen15654a62010-12-16 14:31:53 +01002531 error_report("Invalid format name: '%s'", out_basefmt);
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09002532 ret = -1;
2533 goto out;
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002534 }
2535 }
2536
2537 /* For safe rebasing we need to compare old and new backing file */
Stefan Hajnoczi40ed35a2014-08-26 19:17:56 +01002538 if (!unsafe) {
Jeff Cody9a29e182015-01-22 08:03:30 -05002539 char backing_name[PATH_MAX];
Max Reitz644483d2015-02-05 13:58:17 -05002540 QDict *options = NULL;
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002541
Max Reitz644483d2015-02-05 13:58:17 -05002542 if (bs->backing_format[0] != '\0') {
2543 options = qdict_new();
2544 qdict_put(options, "driver", qstring_from_str(bs->backing_format));
2545 }
2546
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002547 bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name));
Max Reitz644483d2015-02-05 13:58:17 -05002548 blk_old_backing = blk_new_open("old_backing", backing_name, NULL,
2549 options, src_flags, &local_err);
2550 if (!blk_old_backing) {
Max Reitz34b5d2c2013-09-05 14:45:29 +02002551 error_report("Could not open old backing file '%s': %s",
2552 backing_name, error_get_pretty(local_err));
2553 error_free(local_err);
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09002554 goto out;
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002555 }
Max Reitz644483d2015-02-05 13:58:17 -05002556
Alex Bligha6166732012-10-16 13:46:18 +01002557 if (out_baseimg[0]) {
Max Reitz644483d2015-02-05 13:58:17 -05002558 if (out_basefmt) {
2559 options = qdict_new();
2560 qdict_put(options, "driver", qstring_from_str(out_basefmt));
2561 } else {
2562 options = NULL;
2563 }
2564
2565 blk_new_backing = blk_new_open("new_backing", out_baseimg, NULL,
2566 options, src_flags, &local_err);
2567 if (!blk_new_backing) {
Max Reitz34b5d2c2013-09-05 14:45:29 +02002568 error_report("Could not open new backing file '%s': %s",
2569 out_baseimg, error_get_pretty(local_err));
2570 error_free(local_err);
Alex Bligha6166732012-10-16 13:46:18 +01002571 goto out;
2572 }
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002573 }
2574 }
2575
2576 /*
2577 * Check each unallocated cluster in the COW file. If it is unallocated,
2578 * accesses go to the backing file. We must therefore compare this cluster
2579 * in the old and new backing file, and if they differ we need to copy it
2580 * from the old backing file into the COW file.
2581 *
2582 * If qemu-img crashes during this step, no harm is done. The content of
2583 * the image is the same as the original one at any time.
2584 */
2585 if (!unsafe) {
Markus Armbruster52bf1e72014-06-26 13:23:25 +02002586 int64_t num_sectors;
2587 int64_t old_backing_num_sectors;
2588 int64_t new_backing_num_sectors = 0;
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002589 uint64_t sector;
Kevin Wolfcc60e322010-04-29 14:47:48 +02002590 int n;
TeLeMand6771bf2010-02-08 16:20:00 +08002591 uint8_t * buf_old;
2592 uint8_t * buf_new;
Kevin Wolf1f710492012-10-12 14:29:18 +02002593 float local_progress = 0;
TeLeMand6771bf2010-02-08 16:20:00 +08002594
Max Reitzf1d3cd72015-02-05 13:58:18 -05002595 buf_old = blk_blockalign(blk, IO_BUF_SIZE);
2596 buf_new = blk_blockalign(blk, IO_BUF_SIZE);
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002597
Max Reitzf1d3cd72015-02-05 13:58:18 -05002598 num_sectors = blk_nb_sectors(blk);
Markus Armbruster52bf1e72014-06-26 13:23:25 +02002599 if (num_sectors < 0) {
2600 error_report("Could not get size of '%s': %s",
2601 filename, strerror(-num_sectors));
2602 ret = -1;
2603 goto out;
2604 }
Max Reitzf1d3cd72015-02-05 13:58:18 -05002605 old_backing_num_sectors = blk_nb_sectors(blk_old_backing);
Markus Armbruster52bf1e72014-06-26 13:23:25 +02002606 if (old_backing_num_sectors < 0) {
Jeff Cody9a29e182015-01-22 08:03:30 -05002607 char backing_name[PATH_MAX];
Markus Armbruster52bf1e72014-06-26 13:23:25 +02002608
2609 bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name));
2610 error_report("Could not get size of '%s': %s",
2611 backing_name, strerror(-old_backing_num_sectors));
2612 ret = -1;
2613 goto out;
2614 }
Max Reitzf1d3cd72015-02-05 13:58:18 -05002615 if (blk_new_backing) {
2616 new_backing_num_sectors = blk_nb_sectors(blk_new_backing);
Markus Armbruster52bf1e72014-06-26 13:23:25 +02002617 if (new_backing_num_sectors < 0) {
2618 error_report("Could not get size of '%s': %s",
2619 out_baseimg, strerror(-new_backing_num_sectors));
2620 ret = -1;
2621 goto out;
2622 }
Alex Bligha6166732012-10-16 13:46:18 +01002623 }
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002624
Kevin Wolf1f710492012-10-12 14:29:18 +02002625 if (num_sectors != 0) {
2626 local_progress = (float)100 /
2627 (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512));
2628 }
2629
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002630 for (sector = 0; sector < num_sectors; sector += n) {
2631
2632 /* How many sectors can we handle with the next read? */
2633 if (sector + (IO_BUF_SIZE / 512) <= num_sectors) {
2634 n = (IO_BUF_SIZE / 512);
2635 } else {
2636 n = num_sectors - sector;
2637 }
2638
2639 /* If the cluster is allocated, we don't need to take action */
Kevin Wolfcc60e322010-04-29 14:47:48 +02002640 ret = bdrv_is_allocated(bs, sector, n, &n);
Paolo Bonzinid6636402013-09-04 19:00:25 +02002641 if (ret < 0) {
2642 error_report("error while reading image metadata: %s",
2643 strerror(-ret));
2644 goto out;
2645 }
Kevin Wolfcc60e322010-04-29 14:47:48 +02002646 if (ret) {
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002647 continue;
2648 }
2649
Kevin Wolf87a1b3e2011-12-07 12:42:10 +01002650 /*
2651 * Read old and new backing file and take into consideration that
2652 * backing files may be smaller than the COW image.
2653 */
2654 if (sector >= old_backing_num_sectors) {
2655 memset(buf_old, 0, n * BDRV_SECTOR_SIZE);
2656 } else {
2657 if (sector + n > old_backing_num_sectors) {
2658 n = old_backing_num_sectors - sector;
2659 }
2660
Max Reitzf1d3cd72015-02-05 13:58:18 -05002661 ret = blk_read(blk_old_backing, sector, buf_old, n);
Kevin Wolf87a1b3e2011-12-07 12:42:10 +01002662 if (ret < 0) {
2663 error_report("error while reading from old backing file");
2664 goto out;
2665 }
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002666 }
Kevin Wolf87a1b3e2011-12-07 12:42:10 +01002667
Max Reitzf1d3cd72015-02-05 13:58:18 -05002668 if (sector >= new_backing_num_sectors || !blk_new_backing) {
Kevin Wolf87a1b3e2011-12-07 12:42:10 +01002669 memset(buf_new, 0, n * BDRV_SECTOR_SIZE);
2670 } else {
2671 if (sector + n > new_backing_num_sectors) {
2672 n = new_backing_num_sectors - sector;
2673 }
2674
Max Reitzf1d3cd72015-02-05 13:58:18 -05002675 ret = blk_read(blk_new_backing, sector, buf_new, n);
Kevin Wolf87a1b3e2011-12-07 12:42:10 +01002676 if (ret < 0) {
2677 error_report("error while reading from new backing file");
2678 goto out;
2679 }
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002680 }
2681
2682 /* If they differ, we need to write to the COW file */
2683 uint64_t written = 0;
2684
2685 while (written < n) {
2686 int pnum;
2687
2688 if (compare_sectors(buf_old + written * 512,
Kevin Wolf60b1bd42010-02-17 12:32:59 +01002689 buf_new + written * 512, n - written, &pnum))
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002690 {
Max Reitzf1d3cd72015-02-05 13:58:18 -05002691 ret = blk_write(blk, sector + written,
2692 buf_old + written * 512, pnum);
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002693 if (ret < 0) {
Jes Sorensen15654a62010-12-16 14:31:53 +01002694 error_report("Error while writing to COW image: %s",
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002695 strerror(-ret));
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09002696 goto out;
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002697 }
2698 }
2699
2700 written += pnum;
2701 }
Jes Sorensen6b837bc2011-03-30 14:16:25 +02002702 qemu_progress_print(local_progress, 100);
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002703 }
TeLeMand6771bf2010-02-08 16:20:00 +08002704
Kevin Wolfbb1c0592011-08-08 14:09:12 +02002705 qemu_vfree(buf_old);
2706 qemu_vfree(buf_new);
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002707 }
2708
2709 /*
2710 * Change the backing file. All clusters that are different from the old
2711 * backing file are overwritten in the COW file now, so the visible content
2712 * doesn't change when we switch the backing file.
2713 */
Alex Bligha6166732012-10-16 13:46:18 +01002714 if (out_baseimg && *out_baseimg) {
2715 ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt);
2716 } else {
2717 ret = bdrv_change_backing_file(bs, NULL, NULL);
2718 }
2719
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002720 if (ret == -ENOSPC) {
Jes Sorensen15654a62010-12-16 14:31:53 +01002721 error_report("Could not change the backing file to '%s': No "
2722 "space left in the file header", out_baseimg);
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002723 } else if (ret < 0) {
Jes Sorensen15654a62010-12-16 14:31:53 +01002724 error_report("Could not change the backing file to '%s': %s",
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002725 out_baseimg, strerror(-ret));
2726 }
2727
Jes Sorensen6b837bc2011-03-30 14:16:25 +02002728 qemu_progress_print(100, 0);
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002729 /*
2730 * TODO At this point it is possible to check if any clusters that are
2731 * allocated in the COW file are the same in the backing file. If so, they
2732 * could be dropped from the COW file. Don't do this before switching the
2733 * backing file, in case of a crash this would lead to corruption.
2734 */
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09002735out:
Jes Sorensen6b837bc2011-03-30 14:16:25 +02002736 qemu_progress_end();
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002737 /* Cleanup */
2738 if (!unsafe) {
Markus Armbruster26f54e92014-10-07 13:59:04 +02002739 blk_unref(blk_old_backing);
Markus Armbruster26f54e92014-10-07 13:59:04 +02002740 blk_unref(blk_new_backing);
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002741 }
2742
Markus Armbruster26f54e92014-10-07 13:59:04 +02002743 blk_unref(blk);
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09002744 if (ret) {
2745 return 1;
2746 }
Kevin Wolf3e85c6f2010-01-12 12:55:18 +01002747 return 0;
2748}
2749
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002750static int img_resize(int argc, char **argv)
2751{
2752 int c, ret, relative;
2753 const char *filename, *fmt, *size;
2754 int64_t n, total_size;
Miroslav Rezaninaf382d432013-02-13 09:09:40 +01002755 bool quiet = false;
Markus Armbruster26f54e92014-10-07 13:59:04 +02002756 BlockBackend *blk = NULL;
Dong Xu Wang20caf0f2012-08-06 10:18:42 +08002757 QemuOpts *param;
2758 static QemuOptsList resize_options = {
2759 .name = "resize_options",
2760 .head = QTAILQ_HEAD_INITIALIZER(resize_options.head),
2761 .desc = {
2762 {
2763 .name = BLOCK_OPT_SIZE,
2764 .type = QEMU_OPT_SIZE,
2765 .help = "Virtual disk size"
2766 }, {
2767 /* end of list */
2768 }
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002769 },
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002770 };
2771
Kevin Wolfe80fec72011-04-29 10:58:12 +02002772 /* Remove size from argv manually so that negative numbers are not treated
2773 * as options by getopt. */
2774 if (argc < 3) {
Fam Zhengac1307a2014-04-22 13:36:11 +08002775 error_exit("Not enough arguments");
Kevin Wolfe80fec72011-04-29 10:58:12 +02002776 return 1;
2777 }
2778
2779 size = argv[--argc];
2780
2781 /* Parse getopt arguments */
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002782 fmt = NULL;
2783 for(;;) {
Miroslav Rezaninaf382d432013-02-13 09:09:40 +01002784 c = getopt(argc, argv, "f:hq");
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002785 if (c == -1) {
2786 break;
2787 }
2788 switch(c) {
Jes Sorensenef873942010-12-06 15:25:40 +01002789 case '?':
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002790 case 'h':
2791 help();
2792 break;
2793 case 'f':
2794 fmt = optarg;
2795 break;
Miroslav Rezaninaf382d432013-02-13 09:09:40 +01002796 case 'q':
2797 quiet = true;
2798 break;
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002799 }
2800 }
Kevin Wolffc11eb22013-08-05 10:53:04 +02002801 if (optind != argc - 1) {
Fam Zhengac1307a2014-04-22 13:36:11 +08002802 error_exit("Expecting one image file name");
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002803 }
2804 filename = argv[optind++];
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002805
2806 /* Choose grow, shrink, or absolute resize mode */
2807 switch (size[0]) {
2808 case '+':
2809 relative = 1;
2810 size++;
2811 break;
2812 case '-':
2813 relative = -1;
2814 size++;
2815 break;
2816 default:
2817 relative = 0;
2818 break;
2819 }
2820
2821 /* Parse size */
Peter Crosthwaite87ea75d2014-01-01 18:49:17 -08002822 param = qemu_opts_create(&resize_options, NULL, 0, &error_abort);
Dong Xu Wang20caf0f2012-08-06 10:18:42 +08002823 if (qemu_opt_set(param, BLOCK_OPT_SIZE, size)) {
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002824 /* Error message already printed when size parsing fails */
Jes Sorensen2a819982010-12-06 17:08:31 +01002825 ret = -1;
Dong Xu Wang20caf0f2012-08-06 10:18:42 +08002826 qemu_opts_del(param);
Jes Sorensen2a819982010-12-06 17:08:31 +01002827 goto out;
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002828 }
Dong Xu Wang20caf0f2012-08-06 10:18:42 +08002829 n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0);
2830 qemu_opts_del(param);
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002831
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02002832 blk = img_open("image", filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR,
2833 true, quiet);
2834 if (!blk) {
Jes Sorensen2a819982010-12-06 17:08:31 +01002835 ret = -1;
2836 goto out;
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09002837 }
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002838
2839 if (relative) {
Max Reitzf1d3cd72015-02-05 13:58:18 -05002840 total_size = blk_getlength(blk) + n * relative;
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002841 } else {
2842 total_size = n;
2843 }
2844 if (total_size <= 0) {
Jes Sorensen15654a62010-12-16 14:31:53 +01002845 error_report("New image size must be positive");
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09002846 ret = -1;
2847 goto out;
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002848 }
2849
Max Reitzf1d3cd72015-02-05 13:58:18 -05002850 ret = blk_truncate(blk, total_size);
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002851 switch (ret) {
2852 case 0:
Miroslav Rezaninaf382d432013-02-13 09:09:40 +01002853 qprintf(quiet, "Image resized.\n");
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002854 break;
2855 case -ENOTSUP:
Kevin Wolf259b2172012-03-06 12:44:45 +01002856 error_report("This image does not support resize");
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002857 break;
2858 case -EACCES:
Jes Sorensen15654a62010-12-16 14:31:53 +01002859 error_report("Image is read-only");
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002860 break;
2861 default:
Jes Sorensen15654a62010-12-16 14:31:53 +01002862 error_report("Error resizing image (%d)", -ret);
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002863 break;
2864 }
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09002865out:
Markus Armbruster26f54e92014-10-07 13:59:04 +02002866 blk_unref(blk);
MORITA Kazutakac2abcce2010-06-21 04:26:35 +09002867 if (ret) {
2868 return 1;
2869 }
Stefan Hajnocziae6b0ed2010-04-24 09:12:12 +01002870 return 0;
2871}
2872
Max Reitz76a3a342014-10-27 11:12:51 +01002873static void amend_status_cb(BlockDriverState *bs,
2874 int64_t offset, int64_t total_work_size)
2875{
2876 qemu_progress_print(100.f * offset / total_work_size, 0);
2877}
2878
Max Reitz6f176b42013-09-03 10:09:50 +02002879static int img_amend(int argc, char **argv)
2880{
2881 int c, ret = 0;
2882 char *options = NULL;
Chunyan Liu83d05212014-06-05 17:20:51 +08002883 QemuOptsList *create_opts = NULL;
2884 QemuOpts *opts = NULL;
Max Reitzbd39e6e2014-07-22 22:58:43 +02002885 const char *fmt = NULL, *filename, *cache;
2886 int flags;
Max Reitz76a3a342014-10-27 11:12:51 +01002887 bool quiet = false, progress = false;
Markus Armbruster26f54e92014-10-07 13:59:04 +02002888 BlockBackend *blk = NULL;
Max Reitz6f176b42013-09-03 10:09:50 +02002889 BlockDriverState *bs = NULL;
2890
Max Reitzbd39e6e2014-07-22 22:58:43 +02002891 cache = BDRV_DEFAULT_CACHE;
Max Reitz6f176b42013-09-03 10:09:50 +02002892 for (;;) {
Max Reitz76a3a342014-10-27 11:12:51 +01002893 c = getopt(argc, argv, "ho:f:t:pq");
Max Reitz6f176b42013-09-03 10:09:50 +02002894 if (c == -1) {
2895 break;
2896 }
2897
2898 switch (c) {
2899 case 'h':
2900 case '?':
2901 help();
2902 break;
2903 case 'o':
Kevin Wolf626f84f2014-02-21 16:24:06 +01002904 if (!is_valid_option_list(optarg)) {
2905 error_report("Invalid option list: %s", optarg);
2906 ret = -1;
2907 goto out;
2908 }
2909 if (!options) {
2910 options = g_strdup(optarg);
2911 } else {
2912 char *old_options = options;
2913 options = g_strdup_printf("%s,%s", options, optarg);
2914 g_free(old_options);
2915 }
Max Reitz6f176b42013-09-03 10:09:50 +02002916 break;
2917 case 'f':
2918 fmt = optarg;
2919 break;
Max Reitzbd39e6e2014-07-22 22:58:43 +02002920 case 't':
2921 cache = optarg;
2922 break;
Max Reitz76a3a342014-10-27 11:12:51 +01002923 case 'p':
2924 progress = true;
2925 break;
Max Reitz6f176b42013-09-03 10:09:50 +02002926 case 'q':
2927 quiet = true;
2928 break;
2929 }
2930 }
2931
Max Reitz6f176b42013-09-03 10:09:50 +02002932 if (!options) {
Fam Zhengac1307a2014-04-22 13:36:11 +08002933 error_exit("Must specify options (-o)");
Max Reitz6f176b42013-09-03 10:09:50 +02002934 }
2935
Max Reitz76a3a342014-10-27 11:12:51 +01002936 if (quiet) {
2937 progress = false;
2938 }
2939 qemu_progress_init(progress, 1.0);
2940
Kevin Wolfa283cb62014-02-21 16:24:07 +01002941 filename = (optind == argc - 1) ? argv[argc - 1] : NULL;
2942 if (fmt && has_help_option(options)) {
2943 /* If a format is explicitly specified (and possibly no filename is
2944 * given), print option help here */
2945 ret = print_block_option_help(filename, fmt);
2946 goto out;
2947 }
2948
2949 if (optind != argc - 1) {
Max Reitzb2f27e42014-10-27 11:12:52 +01002950 error_report("Expecting one image file name");
2951 ret = -1;
2952 goto out;
Kevin Wolfa283cb62014-02-21 16:24:07 +01002953 }
Max Reitz6f176b42013-09-03 10:09:50 +02002954
Max Reitzbd39e6e2014-07-22 22:58:43 +02002955 flags = BDRV_O_FLAGS | BDRV_O_RDWR;
2956 ret = bdrv_parse_cache_flags(cache, &flags);
2957 if (ret < 0) {
2958 error_report("Invalid cache option: %s", cache);
2959 goto out;
2960 }
2961
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02002962 blk = img_open("image", filename, fmt, flags, true, quiet);
2963 if (!blk) {
Max Reitz6f176b42013-09-03 10:09:50 +02002964 ret = -1;
2965 goto out;
2966 }
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02002967 bs = blk_bs(blk);
Max Reitz6f176b42013-09-03 10:09:50 +02002968
2969 fmt = bs->drv->format_name;
2970
Kevin Wolf626f84f2014-02-21 16:24:06 +01002971 if (has_help_option(options)) {
Kevin Wolfa283cb62014-02-21 16:24:07 +01002972 /* If the format was auto-detected, print option help here */
Max Reitz6f176b42013-09-03 10:09:50 +02002973 ret = print_block_option_help(filename, fmt);
2974 goto out;
2975 }
2976
Max Reitzb2439d22014-12-02 18:32:47 +01002977 if (!bs->drv->create_opts) {
2978 error_report("Format driver '%s' does not support any options to amend",
2979 fmt);
2980 ret = -1;
2981 goto out;
2982 }
2983
Chunyan Liuc282e1f2014-06-05 17:21:11 +08002984 create_opts = qemu_opts_append(create_opts, bs->drv->create_opts);
Chunyan Liu83d05212014-06-05 17:20:51 +08002985 opts = qemu_opts_create(create_opts, NULL, 0, &error_abort);
2986 if (options && qemu_opts_do_parse(opts, options, NULL)) {
Max Reitz6f176b42013-09-03 10:09:50 +02002987 error_report("Invalid options for file format '%s'", fmt);
2988 ret = -1;
2989 goto out;
2990 }
2991
Max Reitz76a3a342014-10-27 11:12:51 +01002992 /* In case the driver does not call amend_status_cb() */
2993 qemu_progress_print(0.f, 0);
2994 ret = bdrv_amend_options(bs, opts, &amend_status_cb);
2995 qemu_progress_print(100.f, 0);
Max Reitz6f176b42013-09-03 10:09:50 +02002996 if (ret < 0) {
2997 error_report("Error while amending options: %s", strerror(-ret));
2998 goto out;
2999 }
3000
3001out:
Max Reitz76a3a342014-10-27 11:12:51 +01003002 qemu_progress_end();
3003
Markus Armbruster26f54e92014-10-07 13:59:04 +02003004 blk_unref(blk);
Chunyan Liu83d05212014-06-05 17:20:51 +08003005 qemu_opts_del(opts);
3006 qemu_opts_free(create_opts);
Kevin Wolf626f84f2014-02-21 16:24:06 +01003007 g_free(options);
3008
Max Reitz6f176b42013-09-03 10:09:50 +02003009 if (ret) {
3010 return 1;
3011 }
3012 return 0;
3013}
3014
Anthony Liguoric227f092009-10-01 16:12:16 -05003015static const img_cmd_t img_cmds[] = {
Stuart Brady153859b2009-06-07 00:42:17 +01003016#define DEF(option, callback, arg_string) \
3017 { option, callback },
3018#include "qemu-img-cmds.h"
3019#undef DEF
3020#undef GEN_DOCS
3021 { NULL, NULL, },
3022};
3023
bellardea2384d2004-08-01 21:59:26 +00003024int main(int argc, char **argv)
3025{
Anthony Liguoric227f092009-10-01 16:12:16 -05003026 const img_cmd_t *cmd;
Stuart Brady153859b2009-06-07 00:42:17 +01003027 const char *cmdname;
Chrysostomos Nanakos2f78e492014-09-18 14:30:49 +03003028 Error *local_error = NULL;
Jeff Cody7db16892014-04-25 17:02:32 -04003029 int c;
Jeff Cody7db16892014-04-25 17:02:32 -04003030 static const struct option long_options[] = {
3031 {"help", no_argument, 0, 'h'},
Jeff Cody5f6979c2014-04-28 14:37:18 -04003032 {"version", no_argument, 0, 'v'},
Jeff Cody7db16892014-04-25 17:02:32 -04003033 {0, 0, 0, 0}
3034 };
bellardea2384d2004-08-01 21:59:26 +00003035
MORITA Kazutaka526eda12013-07-23 17:30:11 +09003036#ifdef CONFIG_POSIX
3037 signal(SIGPIPE, SIG_IGN);
3038#endif
3039
Kevin Wolf53f76e52010-12-16 15:10:32 +01003040 error_set_progname(argv[0]);
Fam Zheng10f5bff2014-02-10 14:48:51 +08003041 qemu_init_exec_dir(argv[0]);
Kevin Wolf53f76e52010-12-16 15:10:32 +01003042
Chrysostomos Nanakos2f78e492014-09-18 14:30:49 +03003043 if (qemu_init_main_loop(&local_error)) {
Markus Armbruster565f65d2015-02-12 13:55:05 +01003044 error_report_err(local_error);
Chrysostomos Nanakos2f78e492014-09-18 14:30:49 +03003045 exit(EXIT_FAILURE);
3046 }
3047
bellardea2384d2004-08-01 21:59:26 +00003048 bdrv_init();
Fam Zhengac1307a2014-04-22 13:36:11 +08003049 if (argc < 2) {
3050 error_exit("Not enough arguments");
3051 }
Stuart Brady153859b2009-06-07 00:42:17 +01003052 cmdname = argv[1];
Stuart Brady153859b2009-06-07 00:42:17 +01003053
3054 /* find the command */
Jeff Cody5f6979c2014-04-28 14:37:18 -04003055 for (cmd = img_cmds; cmd->name != NULL; cmd++) {
Stuart Brady153859b2009-06-07 00:42:17 +01003056 if (!strcmp(cmdname, cmd->name)) {
Jeff Cody7db16892014-04-25 17:02:32 -04003057 return cmd->handler(argc - 1, argv + 1);
Stuart Brady153859b2009-06-07 00:42:17 +01003058 }
bellardea2384d2004-08-01 21:59:26 +00003059 }
Stuart Brady153859b2009-06-07 00:42:17 +01003060
Jeff Cody5f6979c2014-04-28 14:37:18 -04003061 c = getopt_long(argc, argv, "h", long_options, NULL);
Jeff Cody7db16892014-04-25 17:02:32 -04003062
3063 if (c == 'h') {
3064 help();
3065 }
Jeff Cody5f6979c2014-04-28 14:37:18 -04003066 if (c == 'v') {
3067 printf(QEMU_IMG_VERSION);
3068 return 0;
3069 }
Jeff Cody7db16892014-04-25 17:02:32 -04003070
Stuart Brady153859b2009-06-07 00:42:17 +01003071 /* not found */
Fam Zhengac1307a2014-04-22 13:36:11 +08003072 error_exit("Command not found: %s", cmdname);
bellardea2384d2004-08-01 21:59:26 +00003073}