bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1 | /* |
bellard | fb43f4d | 2006-08-07 21:34:46 +0000 | [diff] [blame] | 2 | * QEMU disk image utility |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 3 | * |
bellard | 68d0f70 | 2008-01-06 17:21:48 +0000 | [diff] [blame] | 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 5 | * |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 6 | * 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 | */ |
pbrook | faf0796 | 2007-11-11 02:51:17 +0000 | [diff] [blame] | 24 | #include "qemu-common.h" |
Kevin Wolf | 9ea2ea7 | 2009-05-18 16:42:11 +0200 | [diff] [blame] | 25 | #include "qemu-option.h" |
Kevin Wolf | 53f76e5 | 2010-12-16 15:10:32 +0100 | [diff] [blame] | 26 | #include "qemu-error.h" |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 27 | #include "osdep.h" |
Jes Sorensen | dc786bc | 2010-10-26 10:39:23 +0200 | [diff] [blame] | 28 | #include "sysemu.h" |
ths | ec36ba1 | 2007-09-16 21:59:02 +0000 | [diff] [blame] | 29 | #include "block_int.h" |
aliguori | 9230eaf | 2009-03-28 17:55:19 +0000 | [diff] [blame] | 30 | #include <stdio.h> |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 31 | |
bellard | e844533 | 2006-06-14 15:32:10 +0000 | [diff] [blame] | 32 | #ifdef _WIN32 |
| 33 | #include <windows.h> |
| 34 | #endif |
| 35 | |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 36 | typedef struct img_cmd_t { |
Stuart Brady | 153859b | 2009-06-07 00:42:17 +0100 | [diff] [blame] | 37 | const char *name; |
| 38 | int (*handler)(int argc, char **argv); |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 39 | } img_cmd_t; |
Stuart Brady | 153859b | 2009-06-07 00:42:17 +0100 | [diff] [blame] | 40 | |
aurel32 | 137519c | 2008-11-30 19:12:49 +0000 | [diff] [blame] | 41 | /* Default to cache=writeback as data integrity is not important for qemu-tcg. */ |
Stefan Hajnoczi | adfe078 | 2010-04-13 10:29:35 +0100 | [diff] [blame] | 42 | #define BDRV_O_FLAGS BDRV_O_CACHE_WB |
aurel32 | 137519c | 2008-11-30 19:12:49 +0000 | [diff] [blame] | 43 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 44 | static void format_print(void *opaque, const char *name) |
| 45 | { |
| 46 | printf(" %s", name); |
| 47 | } |
| 48 | |
blueswir1 | d2c639d | 2009-01-24 18:19:25 +0000 | [diff] [blame] | 49 | /* Please keep in synch with qemu-img.texi */ |
pbrook | 3f379ab | 2007-11-11 03:33:13 +0000 | [diff] [blame] | 50 | static void help(void) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 51 | { |
Paolo Bonzini | e00291c | 2010-02-04 16:49:56 +0100 | [diff] [blame] | 52 | const char *help_msg = |
| 53 | "qemu-img version " QEMU_VERSION ", Copyright (c) 2004-2008 Fabrice Bellard\n" |
malc | 3f020d7 | 2010-02-08 12:04:56 +0300 | [diff] [blame] | 54 | "usage: qemu-img command [command options]\n" |
| 55 | "QEMU disk image utility\n" |
| 56 | "\n" |
| 57 | "Command syntax:\n" |
Stuart Brady | 153859b | 2009-06-07 00:42:17 +0100 | [diff] [blame] | 58 | #define DEF(option, callback, arg_string) \ |
| 59 | " " arg_string "\n" |
| 60 | #include "qemu-img-cmds.h" |
| 61 | #undef DEF |
| 62 | #undef GEN_DOCS |
malc | 3f020d7 | 2010-02-08 12:04:56 +0300 | [diff] [blame] | 63 | "\n" |
| 64 | "Command parameters:\n" |
| 65 | " 'filename' is a disk image filename\n" |
| 66 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" |
| 67 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
| 68 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M)\n" |
| 69 | " and T (terabyte, 1024G) are supported. 'b' is ignored.\n" |
| 70 | " 'output_filename' is the destination disk image filename\n" |
| 71 | " 'output_fmt' is the destination format\n" |
| 72 | " 'options' is a comma separated list of format specific options in a\n" |
| 73 | " name=value format. Use -o ? for an overview of the options supported by the\n" |
| 74 | " used format\n" |
| 75 | " '-c' indicates that target image must be compressed (qcow format only)\n" |
| 76 | " '-u' enables unsafe rebasing. It is assumed that old and new backing file\n" |
| 77 | " match exactly. The image doesn't need a working backing file before\n" |
| 78 | " rebasing in this case (useful for renaming the backing file)\n" |
| 79 | " '-h' with or without a command shows this help and lists the supported formats\n" |
| 80 | "\n" |
| 81 | "Parameters to snapshot subcommand:\n" |
| 82 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" |
| 83 | " '-a' applies a snapshot (revert disk to saved state)\n" |
| 84 | " '-c' creates a snapshot\n" |
| 85 | " '-d' deletes a snapshot\n" |
Paolo Bonzini | e00291c | 2010-02-04 16:49:56 +0100 | [diff] [blame] | 86 | " '-l' lists all snapshots in the given image\n"; |
| 87 | |
| 88 | printf("%s\nSupported formats:", help_msg); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 89 | bdrv_iterate_format(format_print, NULL); |
| 90 | printf("\n"); |
| 91 | exit(1); |
| 92 | } |
| 93 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 94 | #if defined(WIN32) |
| 95 | /* XXX: put correct support for win32 */ |
| 96 | static int read_password(char *buf, int buf_size) |
| 97 | { |
| 98 | int c, i; |
| 99 | printf("Password: "); |
| 100 | fflush(stdout); |
| 101 | i = 0; |
| 102 | for(;;) { |
| 103 | c = getchar(); |
| 104 | if (c == '\n') |
| 105 | break; |
| 106 | if (i < (buf_size - 1)) |
| 107 | buf[i++] = c; |
| 108 | } |
| 109 | buf[i] = '\0'; |
| 110 | return 0; |
| 111 | } |
| 112 | |
| 113 | #else |
| 114 | |
| 115 | #include <termios.h> |
| 116 | |
| 117 | static struct termios oldtty; |
| 118 | |
| 119 | static void term_exit(void) |
| 120 | { |
| 121 | tcsetattr (0, TCSANOW, &oldtty); |
| 122 | } |
| 123 | |
| 124 | static void term_init(void) |
| 125 | { |
| 126 | struct termios tty; |
| 127 | |
| 128 | tcgetattr (0, &tty); |
| 129 | oldtty = tty; |
| 130 | |
| 131 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP |
| 132 | |INLCR|IGNCR|ICRNL|IXON); |
| 133 | tty.c_oflag |= OPOST; |
| 134 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); |
| 135 | tty.c_cflag &= ~(CSIZE|PARENB); |
| 136 | tty.c_cflag |= CS8; |
| 137 | tty.c_cc[VMIN] = 1; |
| 138 | tty.c_cc[VTIME] = 0; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 139 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 140 | tcsetattr (0, TCSANOW, &tty); |
| 141 | |
| 142 | atexit(term_exit); |
| 143 | } |
| 144 | |
pbrook | 3f379ab | 2007-11-11 03:33:13 +0000 | [diff] [blame] | 145 | static int read_password(char *buf, int buf_size) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 146 | { |
| 147 | uint8_t ch; |
| 148 | int i, ret; |
| 149 | |
| 150 | printf("password: "); |
| 151 | fflush(stdout); |
| 152 | term_init(); |
| 153 | i = 0; |
| 154 | for(;;) { |
| 155 | ret = read(0, &ch, 1); |
| 156 | if (ret == -1) { |
| 157 | if (errno == EAGAIN || errno == EINTR) { |
| 158 | continue; |
| 159 | } else { |
| 160 | ret = -1; |
| 161 | break; |
| 162 | } |
| 163 | } else if (ret == 0) { |
| 164 | ret = -1; |
| 165 | break; |
| 166 | } else { |
| 167 | if (ch == '\r') { |
| 168 | ret = 0; |
| 169 | break; |
| 170 | } |
| 171 | if (i < (buf_size - 1)) |
| 172 | buf[i++] = ch; |
| 173 | } |
| 174 | } |
| 175 | term_exit(); |
| 176 | buf[i] = '\0'; |
| 177 | printf("\n"); |
| 178 | return ret; |
| 179 | } |
| 180 | #endif |
| 181 | |
Jes Sorensen | 4ac8aac | 2010-12-06 15:25:38 +0100 | [diff] [blame] | 182 | static int print_block_option_help(const char *filename, const char *fmt) |
| 183 | { |
| 184 | BlockDriver *drv, *proto_drv; |
| 185 | QEMUOptionParameter *create_options = NULL; |
| 186 | |
| 187 | /* Find driver and parse its options */ |
| 188 | drv = bdrv_find_format(fmt); |
| 189 | if (!drv) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 190 | error_report("Unknown file format '%s'", fmt); |
Jes Sorensen | 4ac8aac | 2010-12-06 15:25:38 +0100 | [diff] [blame] | 191 | return 1; |
| 192 | } |
| 193 | |
| 194 | proto_drv = bdrv_find_protocol(filename); |
| 195 | if (!proto_drv) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 196 | error_report("Unknown protocol '%s'", filename); |
Jes Sorensen | 4ac8aac | 2010-12-06 15:25:38 +0100 | [diff] [blame] | 197 | return 1; |
| 198 | } |
| 199 | |
| 200 | create_options = append_option_parameters(create_options, |
| 201 | drv->create_options); |
| 202 | create_options = append_option_parameters(create_options, |
| 203 | proto_drv->create_options); |
| 204 | print_option_help(create_options); |
| 205 | free_option_parameters(create_options); |
| 206 | return 0; |
| 207 | } |
| 208 | |
bellard | 75c2380 | 2004-08-27 21:28:58 +0000 | [diff] [blame] | 209 | static BlockDriverState *bdrv_new_open(const char *filename, |
Sheng Yang | 9bc378c | 2010-01-29 10:15:06 +0800 | [diff] [blame] | 210 | const char *fmt, |
Stefan Hajnoczi | f163d07 | 2010-04-13 10:29:34 +0100 | [diff] [blame] | 211 | int flags) |
bellard | 75c2380 | 2004-08-27 21:28:58 +0000 | [diff] [blame] | 212 | { |
| 213 | BlockDriverState *bs; |
| 214 | BlockDriver *drv; |
| 215 | char password[256]; |
| 216 | |
| 217 | bs = bdrv_new(""); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 218 | if (!bs) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 219 | error_report("Not enough memory"); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 220 | goto fail; |
| 221 | } |
bellard | 75c2380 | 2004-08-27 21:28:58 +0000 | [diff] [blame] | 222 | if (fmt) { |
| 223 | drv = bdrv_find_format(fmt); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 224 | if (!drv) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 225 | error_report("Unknown file format '%s'", fmt); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 226 | goto fail; |
| 227 | } |
bellard | 75c2380 | 2004-08-27 21:28:58 +0000 | [diff] [blame] | 228 | } else { |
| 229 | drv = NULL; |
| 230 | } |
Kevin Wolf | d6e9098 | 2010-03-31 14:40:27 +0200 | [diff] [blame] | 231 | if (bdrv_open(bs, filename, flags, drv) < 0) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 232 | error_report("Could not open '%s'", filename); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 233 | goto fail; |
bellard | 75c2380 | 2004-08-27 21:28:58 +0000 | [diff] [blame] | 234 | } |
| 235 | if (bdrv_is_encrypted(bs)) { |
| 236 | printf("Disk image '%s' is encrypted.\n", filename); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 237 | if (read_password(password, sizeof(password)) < 0) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 238 | error_report("No password given"); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 239 | goto fail; |
| 240 | } |
| 241 | if (bdrv_set_key(bs, password) < 0) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 242 | error_report("invalid password"); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 243 | goto fail; |
| 244 | } |
bellard | 75c2380 | 2004-08-27 21:28:58 +0000 | [diff] [blame] | 245 | } |
| 246 | return bs; |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 247 | fail: |
| 248 | if (bs) { |
| 249 | bdrv_delete(bs); |
| 250 | } |
| 251 | return NULL; |
bellard | 75c2380 | 2004-08-27 21:28:58 +0000 | [diff] [blame] | 252 | } |
| 253 | |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 254 | static int add_old_style_options(const char *fmt, QEMUOptionParameter *list, |
Jes Sorensen | eec77d9 | 2010-12-07 17:44:34 +0100 | [diff] [blame] | 255 | const char *base_filename, |
| 256 | const char *base_fmt) |
Kevin Wolf | efa84d4 | 2009-05-18 16:42:12 +0200 | [diff] [blame] | 257 | { |
Kevin Wolf | efa84d4 | 2009-05-18 16:42:12 +0200 | [diff] [blame] | 258 | if (base_filename) { |
| 259 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FILE, base_filename)) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 260 | error_report("Backing file not supported for file format '%s'", |
| 261 | fmt); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 262 | return -1; |
Kevin Wolf | efa84d4 | 2009-05-18 16:42:12 +0200 | [diff] [blame] | 263 | } |
| 264 | } |
| 265 | if (base_fmt) { |
| 266 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FMT, base_fmt)) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 267 | error_report("Backing file format not supported for file " |
| 268 | "format '%s'", fmt); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 269 | return -1; |
Kevin Wolf | efa84d4 | 2009-05-18 16:42:12 +0200 | [diff] [blame] | 270 | } |
| 271 | } |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 272 | return 0; |
Kevin Wolf | efa84d4 | 2009-05-18 16:42:12 +0200 | [diff] [blame] | 273 | } |
| 274 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 275 | static int img_create(int argc, char **argv) |
| 276 | { |
Jes Sorensen | eec77d9 | 2010-12-07 17:44:34 +0100 | [diff] [blame] | 277 | int c, ret = 0; |
Jes Sorensen | 1da7cfb | 2010-12-09 14:17:25 +0100 | [diff] [blame] | 278 | uint64_t img_size = -1; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 279 | const char *fmt = "raw"; |
aliguori | 9230eaf | 2009-03-28 17:55:19 +0000 | [diff] [blame] | 280 | const char *base_fmt = NULL; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 281 | const char *filename; |
| 282 | const char *base_filename = NULL; |
Kevin Wolf | 9ea2ea7 | 2009-05-18 16:42:11 +0200 | [diff] [blame] | 283 | char *options = NULL; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 284 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 285 | for(;;) { |
Kevin Wolf | 9ea2ea7 | 2009-05-18 16:42:11 +0200 | [diff] [blame] | 286 | c = getopt(argc, argv, "F:b:f:he6o:"); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 287 | if (c == -1) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 288 | break; |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 289 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 290 | switch(c) { |
Jes Sorensen | ef87394 | 2010-12-06 15:25:40 +0100 | [diff] [blame] | 291 | case '?': |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 292 | case 'h': |
| 293 | help(); |
| 294 | break; |
aliguori | 9230eaf | 2009-03-28 17:55:19 +0000 | [diff] [blame] | 295 | case 'F': |
| 296 | base_fmt = optarg; |
| 297 | break; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 298 | case 'b': |
| 299 | base_filename = optarg; |
| 300 | break; |
| 301 | case 'f': |
| 302 | fmt = optarg; |
| 303 | break; |
| 304 | case 'e': |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 305 | error_report("qemu-img: option -e is deprecated, please use \'-o " |
Jes Sorensen | eec77d9 | 2010-12-07 17:44:34 +0100 | [diff] [blame] | 306 | "encryption\' instead!"); |
| 307 | return 1; |
ths | d8871c5 | 2007-10-24 16:11:42 +0000 | [diff] [blame] | 308 | case '6': |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 309 | error_report("qemu-img: option -6 is deprecated, please use \'-o " |
Jes Sorensen | eec77d9 | 2010-12-07 17:44:34 +0100 | [diff] [blame] | 310 | "compat6\' instead!"); |
| 311 | return 1; |
Kevin Wolf | 9ea2ea7 | 2009-05-18 16:42:11 +0200 | [diff] [blame] | 312 | case 'o': |
| 313 | options = optarg; |
| 314 | break; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 315 | } |
| 316 | } |
aliguori | 9230eaf | 2009-03-28 17:55:19 +0000 | [diff] [blame] | 317 | |
MORITA Kazutaka | b50cbab | 2010-05-26 11:35:36 +0900 | [diff] [blame] | 318 | /* Get the filename */ |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 319 | if (optind >= argc) { |
MORITA Kazutaka | b50cbab | 2010-05-26 11:35:36 +0900 | [diff] [blame] | 320 | help(); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 321 | } |
MORITA Kazutaka | b50cbab | 2010-05-26 11:35:36 +0900 | [diff] [blame] | 322 | filename = argv[optind++]; |
| 323 | |
Jes Sorensen | 1da7cfb | 2010-12-09 14:17:25 +0100 | [diff] [blame] | 324 | /* Get image size, if specified */ |
| 325 | if (optind < argc) { |
| 326 | ssize_t sval; |
| 327 | sval = strtosz_suffix(argv[optind++], NULL, STRTOSZ_DEFSUFFIX_B); |
| 328 | if (sval < 0) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 329 | error_report("Invalid image size specified! You may use k, M, G or " |
Jes Sorensen | 1da7cfb | 2010-12-09 14:17:25 +0100 | [diff] [blame] | 330 | "T suffixes for "); |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 331 | error_report("kilobytes, megabytes, gigabytes and terabytes."); |
Jes Sorensen | 1da7cfb | 2010-12-09 14:17:25 +0100 | [diff] [blame] | 332 | ret = -1; |
| 333 | goto out; |
| 334 | } |
| 335 | img_size = (uint64_t)sval; |
| 336 | } |
| 337 | |
Jes Sorensen | 4ac8aac | 2010-12-06 15:25:38 +0100 | [diff] [blame] | 338 | if (options && !strcmp(options, "?")) { |
| 339 | ret = print_block_option_help(filename, fmt); |
| 340 | goto out; |
| 341 | } |
| 342 | |
Jes Sorensen | f88e1a4 | 2010-12-16 13:52:15 +0100 | [diff] [blame] | 343 | ret = bdrv_img_create(filename, fmt, base_filename, base_fmt, |
| 344 | options, img_size, BDRV_O_FLAGS); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 345 | out: |
| 346 | if (ret) { |
| 347 | return 1; |
| 348 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 349 | return 0; |
| 350 | } |
| 351 | |
Kevin Wolf | e076f33 | 2010-06-29 11:43:13 +0200 | [diff] [blame] | 352 | /* |
| 353 | * Checks an image for consistency. Exit codes: |
| 354 | * |
| 355 | * 0 - Check completed, image is good |
| 356 | * 1 - Check not completed because of internal errors |
| 357 | * 2 - Check completed, image is corrupted |
| 358 | * 3 - Check completed, image has leaked clusters, but is good otherwise |
| 359 | */ |
aliguori | 1585969 | 2009-04-21 23:11:53 +0000 | [diff] [blame] | 360 | static int img_check(int argc, char **argv) |
| 361 | { |
| 362 | int c, ret; |
| 363 | const char *filename, *fmt; |
aliguori | 1585969 | 2009-04-21 23:11:53 +0000 | [diff] [blame] | 364 | BlockDriverState *bs; |
Kevin Wolf | e076f33 | 2010-06-29 11:43:13 +0200 | [diff] [blame] | 365 | BdrvCheckResult result; |
aliguori | 1585969 | 2009-04-21 23:11:53 +0000 | [diff] [blame] | 366 | |
| 367 | fmt = NULL; |
| 368 | for(;;) { |
| 369 | c = getopt(argc, argv, "f:h"); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 370 | if (c == -1) { |
aliguori | 1585969 | 2009-04-21 23:11:53 +0000 | [diff] [blame] | 371 | break; |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 372 | } |
aliguori | 1585969 | 2009-04-21 23:11:53 +0000 | [diff] [blame] | 373 | switch(c) { |
Jes Sorensen | ef87394 | 2010-12-06 15:25:40 +0100 | [diff] [blame] | 374 | case '?': |
aliguori | 1585969 | 2009-04-21 23:11:53 +0000 | [diff] [blame] | 375 | case 'h': |
| 376 | help(); |
| 377 | break; |
| 378 | case 'f': |
| 379 | fmt = optarg; |
| 380 | break; |
| 381 | } |
| 382 | } |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 383 | if (optind >= argc) { |
aliguori | 1585969 | 2009-04-21 23:11:53 +0000 | [diff] [blame] | 384 | help(); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 385 | } |
aliguori | 1585969 | 2009-04-21 23:11:53 +0000 | [diff] [blame] | 386 | filename = argv[optind++]; |
| 387 | |
Stefan Hajnoczi | adfe078 | 2010-04-13 10:29:35 +0100 | [diff] [blame] | 388 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 389 | if (!bs) { |
| 390 | return 1; |
| 391 | } |
Kevin Wolf | e076f33 | 2010-06-29 11:43:13 +0200 | [diff] [blame] | 392 | ret = bdrv_check(bs, &result); |
| 393 | |
| 394 | if (ret == -ENOTSUP) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 395 | error_report("This image format does not support checks"); |
Kevin Wolf | e076f33 | 2010-06-29 11:43:13 +0200 | [diff] [blame] | 396 | bdrv_delete(bs); |
| 397 | return 1; |
| 398 | } |
| 399 | |
| 400 | if (!(result.corruptions || result.leaks || result.check_errors)) { |
| 401 | printf("No errors were found on the image.\n"); |
| 402 | } else { |
| 403 | if (result.corruptions) { |
| 404 | printf("\n%d errors were found on the image.\n" |
| 405 | "Data may be corrupted, or further writes to the image " |
| 406 | "may corrupt it.\n", |
| 407 | result.corruptions); |
aliguori | 1585969 | 2009-04-21 23:11:53 +0000 | [diff] [blame] | 408 | } |
Kevin Wolf | e076f33 | 2010-06-29 11:43:13 +0200 | [diff] [blame] | 409 | |
| 410 | if (result.leaks) { |
| 411 | printf("\n%d leaked clusters were found on the image.\n" |
| 412 | "This means waste of disk space, but no harm to data.\n", |
| 413 | result.leaks); |
| 414 | } |
| 415 | |
| 416 | if (result.check_errors) { |
| 417 | printf("\n%d internal errors have occurred during the check.\n", |
| 418 | result.check_errors); |
| 419 | } |
aliguori | 1585969 | 2009-04-21 23:11:53 +0000 | [diff] [blame] | 420 | } |
| 421 | |
| 422 | bdrv_delete(bs); |
Kevin Wolf | e076f33 | 2010-06-29 11:43:13 +0200 | [diff] [blame] | 423 | |
| 424 | if (ret < 0 || result.check_errors) { |
| 425 | printf("\nAn error has occurred during the check: %s\n" |
| 426 | "The check is not complete and may have missed error.\n", |
| 427 | strerror(-ret)); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 428 | return 1; |
| 429 | } |
Kevin Wolf | e076f33 | 2010-06-29 11:43:13 +0200 | [diff] [blame] | 430 | |
| 431 | if (result.corruptions) { |
| 432 | return 2; |
| 433 | } else if (result.leaks) { |
| 434 | return 3; |
| 435 | } else { |
| 436 | return 0; |
| 437 | } |
aliguori | 1585969 | 2009-04-21 23:11:53 +0000 | [diff] [blame] | 438 | } |
| 439 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 440 | static int img_commit(int argc, char **argv) |
| 441 | { |
| 442 | int c, ret; |
| 443 | const char *filename, *fmt; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 444 | BlockDriverState *bs; |
| 445 | |
| 446 | fmt = NULL; |
| 447 | for(;;) { |
| 448 | c = getopt(argc, argv, "f:h"); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 449 | if (c == -1) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 450 | break; |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 451 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 452 | switch(c) { |
Jes Sorensen | ef87394 | 2010-12-06 15:25:40 +0100 | [diff] [blame] | 453 | case '?': |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 454 | case 'h': |
| 455 | help(); |
| 456 | break; |
| 457 | case 'f': |
| 458 | fmt = optarg; |
| 459 | break; |
| 460 | } |
| 461 | } |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 462 | if (optind >= argc) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 463 | help(); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 464 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 465 | filename = argv[optind++]; |
| 466 | |
Stefan Hajnoczi | adfe078 | 2010-04-13 10:29:35 +0100 | [diff] [blame] | 467 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 468 | if (!bs) { |
| 469 | return 1; |
| 470 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 471 | ret = bdrv_commit(bs); |
| 472 | switch(ret) { |
| 473 | case 0: |
| 474 | printf("Image committed.\n"); |
| 475 | break; |
| 476 | case -ENOENT: |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 477 | error_report("No disk inserted"); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 478 | break; |
| 479 | case -EACCES: |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 480 | error_report("Image is read-only"); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 481 | break; |
| 482 | case -ENOTSUP: |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 483 | error_report("Image is already committed"); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 484 | break; |
| 485 | default: |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 486 | error_report("Error while committing image"); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 487 | break; |
| 488 | } |
| 489 | |
| 490 | bdrv_delete(bs); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 491 | if (ret) { |
| 492 | return 1; |
| 493 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 494 | return 0; |
| 495 | } |
| 496 | |
| 497 | static int is_not_zero(const uint8_t *sector, int len) |
| 498 | { |
| 499 | int i; |
| 500 | len >>= 2; |
| 501 | for(i = 0;i < len; i++) { |
| 502 | if (((uint32_t *)sector)[i] != 0) |
| 503 | return 1; |
| 504 | } |
| 505 | return 0; |
| 506 | } |
| 507 | |
ths | f58c7b3 | 2008-06-05 21:53:49 +0000 | [diff] [blame] | 508 | /* |
| 509 | * Returns true iff the first sector pointed to by 'buf' contains at least |
| 510 | * a non-NUL byte. |
| 511 | * |
| 512 | * 'pnum' is set to the number of sectors (including and immediately following |
| 513 | * the first one) that are known to be in the same allocated/unallocated state. |
| 514 | */ |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 515 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
| 516 | { |
| 517 | int v, i; |
| 518 | |
| 519 | if (n <= 0) { |
| 520 | *pnum = 0; |
| 521 | return 0; |
| 522 | } |
| 523 | v = is_not_zero(buf, 512); |
| 524 | for(i = 1; i < n; i++) { |
| 525 | buf += 512; |
| 526 | if (v != is_not_zero(buf, 512)) |
| 527 | break; |
| 528 | } |
| 529 | *pnum = i; |
| 530 | return v; |
| 531 | } |
| 532 | |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 533 | /* |
| 534 | * Compares two buffers sector by sector. Returns 0 if the first sector of both |
| 535 | * buffers matches, non-zero otherwise. |
| 536 | * |
| 537 | * pnum is set to the number of sectors (including and immediately following |
| 538 | * the first one) that are known to have the same comparison result |
| 539 | */ |
| 540 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, |
| 541 | int *pnum) |
| 542 | { |
| 543 | int res, i; |
| 544 | |
| 545 | if (n <= 0) { |
| 546 | *pnum = 0; |
| 547 | return 0; |
| 548 | } |
| 549 | |
| 550 | res = !!memcmp(buf1, buf2, 512); |
| 551 | for(i = 1; i < n; i++) { |
| 552 | buf1 += 512; |
| 553 | buf2 += 512; |
| 554 | |
| 555 | if (!!memcmp(buf1, buf2, 512) != res) { |
| 556 | break; |
| 557 | } |
| 558 | } |
| 559 | |
| 560 | *pnum = i; |
| 561 | return res; |
| 562 | } |
| 563 | |
Kevin Wolf | 80ee15a | 2009-09-15 12:30:43 +0200 | [diff] [blame] | 564 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 565 | |
| 566 | static int img_convert(int argc, char **argv) |
| 567 | { |
Jes Sorensen | eec77d9 | 2010-12-07 17:44:34 +0100 | [diff] [blame] | 568 | int c, ret = 0, n, n1, bs_n, bs_i, compress, cluster_size, cluster_sectors; |
ths | f58c7b3 | 2008-06-05 21:53:49 +0000 | [diff] [blame] | 569 | const char *fmt, *out_fmt, *out_baseimg, *out_filename; |
MORITA Kazutaka | b50cbab | 2010-05-26 11:35:36 +0900 | [diff] [blame] | 570 | BlockDriver *drv, *proto_drv; |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 571 | BlockDriverState **bs = NULL, *out_bs = NULL; |
ths | 96b8f13 | 2007-12-17 01:35:20 +0000 | [diff] [blame] | 572 | int64_t total_sectors, nb_sectors, sector_num, bs_offset; |
| 573 | uint64_t bs_sectors; |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 574 | uint8_t * buf = NULL; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 575 | const uint8_t *buf1; |
bellard | faea38e | 2006-08-05 21:31:00 +0000 | [diff] [blame] | 576 | BlockDriverInfo bdi; |
MORITA Kazutaka | b50cbab | 2010-05-26 11:35:36 +0900 | [diff] [blame] | 577 | QEMUOptionParameter *param = NULL, *create_options = NULL; |
Kevin Wolf | a18953f | 2010-10-14 15:46:04 +0200 | [diff] [blame] | 578 | QEMUOptionParameter *out_baseimg_param; |
Kevin Wolf | efa84d4 | 2009-05-18 16:42:12 +0200 | [diff] [blame] | 579 | char *options = NULL; |
edison | 51ef672 | 2010-09-21 19:58:41 -0700 | [diff] [blame] | 580 | const char *snapshot_name = NULL; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 581 | |
| 582 | fmt = NULL; |
| 583 | out_fmt = "raw"; |
ths | f58c7b3 | 2008-06-05 21:53:49 +0000 | [diff] [blame] | 584 | out_baseimg = NULL; |
Jes Sorensen | eec77d9 | 2010-12-07 17:44:34 +0100 | [diff] [blame] | 585 | compress = 0; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 586 | for(;;) { |
edison | 51ef672 | 2010-09-21 19:58:41 -0700 | [diff] [blame] | 587 | c = getopt(argc, argv, "f:O:B:s:hce6o:"); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 588 | if (c == -1) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 589 | break; |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 590 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 591 | switch(c) { |
Jes Sorensen | ef87394 | 2010-12-06 15:25:40 +0100 | [diff] [blame] | 592 | case '?': |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 593 | case 'h': |
| 594 | help(); |
| 595 | break; |
| 596 | case 'f': |
| 597 | fmt = optarg; |
| 598 | break; |
| 599 | case 'O': |
| 600 | out_fmt = optarg; |
| 601 | break; |
ths | f58c7b3 | 2008-06-05 21:53:49 +0000 | [diff] [blame] | 602 | case 'B': |
| 603 | out_baseimg = optarg; |
| 604 | break; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 605 | case 'c': |
Jes Sorensen | eec77d9 | 2010-12-07 17:44:34 +0100 | [diff] [blame] | 606 | compress = 1; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 607 | break; |
| 608 | case 'e': |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 609 | error_report("qemu-img: option -e is deprecated, please use \'-o " |
Jes Sorensen | eec77d9 | 2010-12-07 17:44:34 +0100 | [diff] [blame] | 610 | "encryption\' instead!"); |
| 611 | return 1; |
ths | ec36ba1 | 2007-09-16 21:59:02 +0000 | [diff] [blame] | 612 | case '6': |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 613 | error_report("qemu-img: option -6 is deprecated, please use \'-o " |
Jes Sorensen | eec77d9 | 2010-12-07 17:44:34 +0100 | [diff] [blame] | 614 | "compat6\' instead!"); |
| 615 | return 1; |
Kevin Wolf | efa84d4 | 2009-05-18 16:42:12 +0200 | [diff] [blame] | 616 | case 'o': |
| 617 | options = optarg; |
| 618 | break; |
edison | 51ef672 | 2010-09-21 19:58:41 -0700 | [diff] [blame] | 619 | case 's': |
| 620 | snapshot_name = optarg; |
| 621 | break; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 622 | } |
| 623 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 624 | |
balrog | 926c2d2 | 2007-10-31 01:11:44 +0000 | [diff] [blame] | 625 | bs_n = argc - optind - 1; |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 626 | if (bs_n < 1) { |
| 627 | help(); |
| 628 | } |
balrog | 926c2d2 | 2007-10-31 01:11:44 +0000 | [diff] [blame] | 629 | |
| 630 | out_filename = argv[argc - 1]; |
ths | f58c7b3 | 2008-06-05 21:53:49 +0000 | [diff] [blame] | 631 | |
Jes Sorensen | 4ac8aac | 2010-12-06 15:25:38 +0100 | [diff] [blame] | 632 | if (options && !strcmp(options, "?")) { |
| 633 | ret = print_block_option_help(out_filename, out_fmt); |
| 634 | goto out; |
| 635 | } |
| 636 | |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 637 | if (bs_n > 1 && out_baseimg) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 638 | error_report("-B makes no sense when concatenating multiple input " |
| 639 | "images"); |
Jes Sorensen | 31ca34b | 2010-12-06 15:25:36 +0100 | [diff] [blame] | 640 | ret = -1; |
| 641 | goto out; |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 642 | } |
balrog | 926c2d2 | 2007-10-31 01:11:44 +0000 | [diff] [blame] | 643 | |
Jes Sorensen | 5bdf61f | 2010-12-06 15:25:35 +0100 | [diff] [blame] | 644 | bs = qemu_mallocz(bs_n * sizeof(BlockDriverState *)); |
balrog | 926c2d2 | 2007-10-31 01:11:44 +0000 | [diff] [blame] | 645 | |
| 646 | total_sectors = 0; |
| 647 | for (bs_i = 0; bs_i < bs_n; bs_i++) { |
Stefan Hajnoczi | adfe078 | 2010-04-13 10:29:35 +0100 | [diff] [blame] | 648 | bs[bs_i] = bdrv_new_open(argv[optind + bs_i], fmt, BDRV_O_FLAGS); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 649 | if (!bs[bs_i]) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 650 | error_report("Could not open '%s'", argv[optind + bs_i]); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 651 | ret = -1; |
| 652 | goto out; |
| 653 | } |
balrog | 926c2d2 | 2007-10-31 01:11:44 +0000 | [diff] [blame] | 654 | bdrv_get_geometry(bs[bs_i], &bs_sectors); |
| 655 | total_sectors += bs_sectors; |
| 656 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 657 | |
edison | 51ef672 | 2010-09-21 19:58:41 -0700 | [diff] [blame] | 658 | if (snapshot_name != NULL) { |
| 659 | if (bs_n > 1) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 660 | error_report("No support for concatenating multiple snapshot\n"); |
edison | 51ef672 | 2010-09-21 19:58:41 -0700 | [diff] [blame] | 661 | ret = -1; |
| 662 | goto out; |
| 663 | } |
| 664 | if (bdrv_snapshot_load_tmp(bs[0], snapshot_name) < 0) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 665 | error_report("Failed to load snapshot\n"); |
edison | 51ef672 | 2010-09-21 19:58:41 -0700 | [diff] [blame] | 666 | ret = -1; |
| 667 | goto out; |
| 668 | } |
| 669 | } |
| 670 | |
Kevin Wolf | efa84d4 | 2009-05-18 16:42:12 +0200 | [diff] [blame] | 671 | /* Find driver and parse its options */ |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 672 | drv = bdrv_find_format(out_fmt); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 673 | if (!drv) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 674 | error_report("Unknown file format '%s'", out_fmt); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 675 | ret = -1; |
| 676 | goto out; |
| 677 | } |
balrog | 926c2d2 | 2007-10-31 01:11:44 +0000 | [diff] [blame] | 678 | |
MORITA Kazutaka | b50cbab | 2010-05-26 11:35:36 +0900 | [diff] [blame] | 679 | proto_drv = bdrv_find_protocol(out_filename); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 680 | if (!proto_drv) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 681 | error_report("Unknown protocol '%s'", out_filename); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 682 | ret = -1; |
| 683 | goto out; |
| 684 | } |
MORITA Kazutaka | b50cbab | 2010-05-26 11:35:36 +0900 | [diff] [blame] | 685 | |
| 686 | create_options = append_option_parameters(create_options, |
| 687 | drv->create_options); |
| 688 | create_options = append_option_parameters(create_options, |
| 689 | proto_drv->create_options); |
Kevin Wolf | db08adf | 2009-06-04 15:39:38 +0200 | [diff] [blame] | 690 | |
Kevin Wolf | efa84d4 | 2009-05-18 16:42:12 +0200 | [diff] [blame] | 691 | if (options) { |
MORITA Kazutaka | b50cbab | 2010-05-26 11:35:36 +0900 | [diff] [blame] | 692 | param = parse_option_parameters(options, create_options, param); |
Kevin Wolf | efa84d4 | 2009-05-18 16:42:12 +0200 | [diff] [blame] | 693 | if (param == NULL) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 694 | error_report("Invalid options for file format '%s'.", out_fmt); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 695 | ret = -1; |
| 696 | goto out; |
Kevin Wolf | efa84d4 | 2009-05-18 16:42:12 +0200 | [diff] [blame] | 697 | } |
| 698 | } else { |
MORITA Kazutaka | b50cbab | 2010-05-26 11:35:36 +0900 | [diff] [blame] | 699 | param = parse_option_parameters("", create_options, param); |
Kevin Wolf | efa84d4 | 2009-05-18 16:42:12 +0200 | [diff] [blame] | 700 | } |
| 701 | |
| 702 | set_option_parameter_int(param, BLOCK_OPT_SIZE, total_sectors * 512); |
Jes Sorensen | eec77d9 | 2010-12-07 17:44:34 +0100 | [diff] [blame] | 703 | ret = add_old_style_options(out_fmt, param, out_baseimg, NULL); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 704 | if (ret < 0) { |
| 705 | goto out; |
| 706 | } |
Kevin Wolf | efa84d4 | 2009-05-18 16:42:12 +0200 | [diff] [blame] | 707 | |
Kevin Wolf | a18953f | 2010-10-14 15:46:04 +0200 | [diff] [blame] | 708 | /* Get backing file name if -o backing_file was used */ |
| 709 | out_baseimg_param = get_option_parameter(param, BLOCK_OPT_BACKING_FILE); |
| 710 | if (out_baseimg_param) { |
| 711 | out_baseimg = out_baseimg_param->value.s; |
| 712 | } |
| 713 | |
Kevin Wolf | efa84d4 | 2009-05-18 16:42:12 +0200 | [diff] [blame] | 714 | /* Check if compression is supported */ |
Jes Sorensen | eec77d9 | 2010-12-07 17:44:34 +0100 | [diff] [blame] | 715 | if (compress) { |
Kevin Wolf | efa84d4 | 2009-05-18 16:42:12 +0200 | [diff] [blame] | 716 | QEMUOptionParameter *encryption = |
| 717 | get_option_parameter(param, BLOCK_OPT_ENCRYPT); |
| 718 | |
| 719 | if (!drv->bdrv_write_compressed) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 720 | error_report("Compression not supported for this file format"); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 721 | ret = -1; |
| 722 | goto out; |
Kevin Wolf | efa84d4 | 2009-05-18 16:42:12 +0200 | [diff] [blame] | 723 | } |
| 724 | |
| 725 | if (encryption && encryption->value.n) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 726 | error_report("Compression and encryption not supported at " |
| 727 | "the same time"); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 728 | ret = -1; |
| 729 | goto out; |
Kevin Wolf | efa84d4 | 2009-05-18 16:42:12 +0200 | [diff] [blame] | 730 | } |
| 731 | } |
| 732 | |
| 733 | /* Create the new image */ |
| 734 | ret = bdrv_create(drv, out_filename, param); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 735 | if (ret < 0) { |
| 736 | if (ret == -ENOTSUP) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 737 | error_report("Formatting not supported for file format '%s'", |
| 738 | out_fmt); |
aurel32 | 6e9ea0c | 2009-04-15 14:42:46 +0000 | [diff] [blame] | 739 | } else if (ret == -EFBIG) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 740 | error_report("The image size is too large for file format '%s'", |
| 741 | out_fmt); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 742 | } else { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 743 | error_report("%s: error while converting %s: %s", |
| 744 | out_filename, out_fmt, strerror(-ret)); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 745 | } |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 746 | goto out; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 747 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 748 | |
Kevin Wolf | 1bd8e17 | 2010-08-31 13:44:25 +0200 | [diff] [blame] | 749 | out_bs = bdrv_new_open(out_filename, out_fmt, |
| 750 | BDRV_O_FLAGS | BDRV_O_RDWR | BDRV_O_NO_FLUSH); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 751 | if (!out_bs) { |
| 752 | ret = -1; |
| 753 | goto out; |
| 754 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 755 | |
balrog | 926c2d2 | 2007-10-31 01:11:44 +0000 | [diff] [blame] | 756 | bs_i = 0; |
| 757 | bs_offset = 0; |
| 758 | bdrv_get_geometry(bs[0], &bs_sectors); |
TeLeMan | d6771bf | 2010-02-08 16:20:00 +0800 | [diff] [blame] | 759 | buf = qemu_malloc(IO_BUF_SIZE); |
balrog | 926c2d2 | 2007-10-31 01:11:44 +0000 | [diff] [blame] | 760 | |
Jes Sorensen | eec77d9 | 2010-12-07 17:44:34 +0100 | [diff] [blame] | 761 | if (compress) { |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 762 | ret = bdrv_get_info(out_bs, &bdi); |
| 763 | if (ret < 0) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 764 | error_report("could not get block driver info"); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 765 | goto out; |
| 766 | } |
bellard | faea38e | 2006-08-05 21:31:00 +0000 | [diff] [blame] | 767 | cluster_size = bdi.cluster_size; |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 768 | if (cluster_size <= 0 || cluster_size > IO_BUF_SIZE) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 769 | error_report("invalid cluster size"); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 770 | ret = -1; |
| 771 | goto out; |
| 772 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 773 | cluster_sectors = cluster_size >> 9; |
| 774 | sector_num = 0; |
| 775 | for(;;) { |
balrog | 926c2d2 | 2007-10-31 01:11:44 +0000 | [diff] [blame] | 776 | int64_t bs_num; |
| 777 | int remainder; |
| 778 | uint8_t *buf2; |
| 779 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 780 | nb_sectors = total_sectors - sector_num; |
| 781 | if (nb_sectors <= 0) |
| 782 | break; |
| 783 | if (nb_sectors >= cluster_sectors) |
| 784 | n = cluster_sectors; |
| 785 | else |
| 786 | n = nb_sectors; |
balrog | 926c2d2 | 2007-10-31 01:11:44 +0000 | [diff] [blame] | 787 | |
| 788 | bs_num = sector_num - bs_offset; |
| 789 | assert (bs_num >= 0); |
| 790 | remainder = n; |
| 791 | buf2 = buf; |
| 792 | while (remainder > 0) { |
| 793 | int nlow; |
| 794 | while (bs_num == bs_sectors) { |
| 795 | bs_i++; |
| 796 | assert (bs_i < bs_n); |
| 797 | bs_offset += bs_sectors; |
| 798 | bdrv_get_geometry(bs[bs_i], &bs_sectors); |
| 799 | bs_num = 0; |
Blue Swirl | 0bfcd59 | 2010-05-22 08:02:12 +0000 | [diff] [blame] | 800 | /* printf("changing part: sector_num=%" PRId64 ", " |
| 801 | "bs_i=%d, bs_offset=%" PRId64 ", bs_sectors=%" PRId64 |
| 802 | "\n", sector_num, bs_i, bs_offset, bs_sectors); */ |
balrog | 926c2d2 | 2007-10-31 01:11:44 +0000 | [diff] [blame] | 803 | } |
| 804 | assert (bs_num < bs_sectors); |
| 805 | |
| 806 | nlow = (remainder > bs_sectors - bs_num) ? bs_sectors - bs_num : remainder; |
| 807 | |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 808 | ret = bdrv_read(bs[bs_i], bs_num, buf2, nlow); |
| 809 | if (ret < 0) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 810 | error_report("error while reading"); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 811 | goto out; |
| 812 | } |
balrog | 926c2d2 | 2007-10-31 01:11:44 +0000 | [diff] [blame] | 813 | |
| 814 | buf2 += nlow * 512; |
| 815 | bs_num += nlow; |
| 816 | |
| 817 | remainder -= nlow; |
| 818 | } |
| 819 | assert (remainder == 0); |
| 820 | |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 821 | if (n < cluster_sectors) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 822 | memset(buf + n * 512, 0, cluster_size - n * 512); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 823 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 824 | if (is_not_zero(buf, cluster_size)) { |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 825 | ret = bdrv_write_compressed(out_bs, sector_num, buf, |
| 826 | cluster_sectors); |
| 827 | if (ret != 0) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 828 | error_report("error while compressing sector %" PRId64, |
bellard | ec3757d | 2006-06-14 15:50:07 +0000 | [diff] [blame] | 829 | sector_num); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 830 | goto out; |
| 831 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 832 | } |
| 833 | sector_num += n; |
| 834 | } |
bellard | faea38e | 2006-08-05 21:31:00 +0000 | [diff] [blame] | 835 | /* signal EOF to align */ |
| 836 | bdrv_write_compressed(out_bs, 0, NULL, 0); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 837 | } else { |
Kevin Wolf | f2feebb | 2010-04-14 17:30:35 +0200 | [diff] [blame] | 838 | int has_zero_init = bdrv_has_zero_init(out_bs); |
| 839 | |
ths | f58c7b3 | 2008-06-05 21:53:49 +0000 | [diff] [blame] | 840 | sector_num = 0; // total number of sectors converted so far |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 841 | for(;;) { |
| 842 | nb_sectors = total_sectors - sector_num; |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 843 | if (nb_sectors <= 0) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 844 | break; |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 845 | } |
| 846 | if (nb_sectors >= (IO_BUF_SIZE / 512)) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 847 | n = (IO_BUF_SIZE / 512); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 848 | } else { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 849 | n = nb_sectors; |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 850 | } |
balrog | 926c2d2 | 2007-10-31 01:11:44 +0000 | [diff] [blame] | 851 | |
| 852 | while (sector_num - bs_offset >= bs_sectors) { |
| 853 | bs_i ++; |
| 854 | assert (bs_i < bs_n); |
| 855 | bs_offset += bs_sectors; |
| 856 | bdrv_get_geometry(bs[bs_i], &bs_sectors); |
Blue Swirl | 0bfcd59 | 2010-05-22 08:02:12 +0000 | [diff] [blame] | 857 | /* printf("changing part: sector_num=%" PRId64 ", bs_i=%d, " |
| 858 | "bs_offset=%" PRId64 ", bs_sectors=%" PRId64 "\n", |
balrog | 926c2d2 | 2007-10-31 01:11:44 +0000 | [diff] [blame] | 859 | sector_num, bs_i, bs_offset, bs_sectors); */ |
| 860 | } |
| 861 | |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 862 | if (n > bs_offset + bs_sectors - sector_num) { |
balrog | 926c2d2 | 2007-10-31 01:11:44 +0000 | [diff] [blame] | 863 | n = bs_offset + bs_sectors - sector_num; |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 864 | } |
balrog | 926c2d2 | 2007-10-31 01:11:44 +0000 | [diff] [blame] | 865 | |
Kevin Wolf | f2feebb | 2010-04-14 17:30:35 +0200 | [diff] [blame] | 866 | if (has_zero_init) { |
Akkarit Sangpetch | d032044 | 2009-07-17 10:02:15 +0200 | [diff] [blame] | 867 | /* If the output image is being created as a copy on write image, |
| 868 | assume that sectors which are unallocated in the input image |
| 869 | are present in both the output's and input's base images (no |
| 870 | need to copy them). */ |
| 871 | if (out_baseimg) { |
| 872 | if (!bdrv_is_allocated(bs[bs_i], sector_num - bs_offset, |
| 873 | n, &n1)) { |
| 874 | sector_num += n1; |
| 875 | continue; |
| 876 | } |
| 877 | /* The next 'n1' sectors are allocated in the input image. Copy |
| 878 | only those as they may be followed by unallocated sectors. */ |
| 879 | n = n1; |
aliguori | 93c65b4 | 2009-04-05 17:40:43 +0000 | [diff] [blame] | 880 | } |
aliguori | 93c65b4 | 2009-04-05 17:40:43 +0000 | [diff] [blame] | 881 | } else { |
| 882 | n1 = n; |
ths | f58c7b3 | 2008-06-05 21:53:49 +0000 | [diff] [blame] | 883 | } |
| 884 | |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 885 | ret = bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n); |
| 886 | if (ret < 0) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 887 | error_report("error while reading"); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 888 | goto out; |
| 889 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 890 | /* NOTE: at the same time we convert, we do not write zero |
| 891 | sectors to have a chance to compress the image. Ideally, we |
| 892 | should add a specific call to have the info to go faster */ |
| 893 | buf1 = buf; |
| 894 | while (n > 0) { |
ths | f58c7b3 | 2008-06-05 21:53:49 +0000 | [diff] [blame] | 895 | /* If the output image is being created as a copy on write image, |
| 896 | copy all sectors even the ones containing only NUL bytes, |
aliguori | 93c65b4 | 2009-04-05 17:40:43 +0000 | [diff] [blame] | 897 | because they may differ from the sectors in the base image. |
| 898 | |
| 899 | If the output is to a host device, we also write out |
| 900 | sectors that are entirely 0, since whatever data was |
| 901 | already there is garbage, not 0s. */ |
Kevin Wolf | f2feebb | 2010-04-14 17:30:35 +0200 | [diff] [blame] | 902 | if (!has_zero_init || out_baseimg || |
aliguori | 93c65b4 | 2009-04-05 17:40:43 +0000 | [diff] [blame] | 903 | is_allocated_sectors(buf1, n, &n1)) { |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 904 | ret = bdrv_write(out_bs, sector_num, buf1, n1); |
| 905 | if (ret < 0) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 906 | error_report("error while writing"); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 907 | goto out; |
| 908 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 909 | } |
| 910 | sector_num += n1; |
| 911 | n -= n1; |
| 912 | buf1 += n1 * 512; |
| 913 | } |
| 914 | } |
| 915 | } |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 916 | out: |
| 917 | free_option_parameters(create_options); |
| 918 | free_option_parameters(param); |
TeLeMan | d6771bf | 2010-02-08 16:20:00 +0800 | [diff] [blame] | 919 | qemu_free(buf); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 920 | if (out_bs) { |
| 921 | bdrv_delete(out_bs); |
| 922 | } |
Jes Sorensen | 31ca34b | 2010-12-06 15:25:36 +0100 | [diff] [blame] | 923 | if (bs) { |
| 924 | for (bs_i = 0; bs_i < bs_n; bs_i++) { |
| 925 | if (bs[bs_i]) { |
| 926 | bdrv_delete(bs[bs_i]); |
| 927 | } |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 928 | } |
Jes Sorensen | 31ca34b | 2010-12-06 15:25:36 +0100 | [diff] [blame] | 929 | qemu_free(bs); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 930 | } |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 931 | if (ret) { |
| 932 | return 1; |
| 933 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 934 | return 0; |
| 935 | } |
| 936 | |
bellard | 57d1a2b | 2004-08-03 21:15:11 +0000 | [diff] [blame] | 937 | #ifdef _WIN32 |
| 938 | static int64_t get_allocated_file_size(const char *filename) |
| 939 | { |
bellard | e844533 | 2006-06-14 15:32:10 +0000 | [diff] [blame] | 940 | typedef DWORD (WINAPI * get_compressed_t)(const char *filename, DWORD *high); |
| 941 | get_compressed_t get_compressed; |
bellard | 57d1a2b | 2004-08-03 21:15:11 +0000 | [diff] [blame] | 942 | struct _stati64 st; |
bellard | e844533 | 2006-06-14 15:32:10 +0000 | [diff] [blame] | 943 | |
| 944 | /* WinNT support GetCompressedFileSize to determine allocate size */ |
| 945 | get_compressed = (get_compressed_t) GetProcAddress(GetModuleHandle("kernel32"), "GetCompressedFileSizeA"); |
| 946 | if (get_compressed) { |
| 947 | DWORD high, low; |
| 948 | low = get_compressed(filename, &high); |
| 949 | if (low != 0xFFFFFFFFlu || GetLastError() == NO_ERROR) |
| 950 | return (((int64_t) high) << 32) + low; |
| 951 | } |
| 952 | |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 953 | if (_stati64(filename, &st) < 0) |
bellard | 57d1a2b | 2004-08-03 21:15:11 +0000 | [diff] [blame] | 954 | return -1; |
| 955 | return st.st_size; |
| 956 | } |
| 957 | #else |
| 958 | static int64_t get_allocated_file_size(const char *filename) |
| 959 | { |
| 960 | struct stat st; |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 961 | if (stat(filename, &st) < 0) |
bellard | 57d1a2b | 2004-08-03 21:15:11 +0000 | [diff] [blame] | 962 | return -1; |
| 963 | return (int64_t)st.st_blocks * 512; |
| 964 | } |
| 965 | #endif |
| 966 | |
bellard | faea38e | 2006-08-05 21:31:00 +0000 | [diff] [blame] | 967 | static void dump_snapshots(BlockDriverState *bs) |
| 968 | { |
| 969 | QEMUSnapshotInfo *sn_tab, *sn; |
| 970 | int nb_sns, i; |
| 971 | char buf[256]; |
| 972 | |
| 973 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
| 974 | if (nb_sns <= 0) |
| 975 | return; |
| 976 | printf("Snapshot list:\n"); |
| 977 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); |
| 978 | for(i = 0; i < nb_sns; i++) { |
| 979 | sn = &sn_tab[i]; |
| 980 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
| 981 | } |
| 982 | qemu_free(sn_tab); |
| 983 | } |
| 984 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 985 | static int img_info(int argc, char **argv) |
| 986 | { |
| 987 | int c; |
| 988 | const char *filename, *fmt; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 989 | BlockDriverState *bs; |
| 990 | char fmt_name[128], size_buf[128], dsize_buf[128]; |
ths | 96b8f13 | 2007-12-17 01:35:20 +0000 | [diff] [blame] | 991 | uint64_t total_sectors; |
| 992 | int64_t allocated_size; |
bellard | 93b6b2a | 2006-08-01 15:51:11 +0000 | [diff] [blame] | 993 | char backing_filename[1024]; |
| 994 | char backing_filename2[1024]; |
bellard | faea38e | 2006-08-05 21:31:00 +0000 | [diff] [blame] | 995 | BlockDriverInfo bdi; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 996 | |
| 997 | fmt = NULL; |
| 998 | for(;;) { |
| 999 | c = getopt(argc, argv, "f:h"); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1000 | if (c == -1) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1001 | break; |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1002 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1003 | switch(c) { |
Jes Sorensen | ef87394 | 2010-12-06 15:25:40 +0100 | [diff] [blame] | 1004 | case '?': |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1005 | case 'h': |
| 1006 | help(); |
| 1007 | break; |
| 1008 | case 'f': |
| 1009 | fmt = optarg; |
| 1010 | break; |
| 1011 | } |
| 1012 | } |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1013 | if (optind >= argc) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1014 | help(); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1015 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1016 | filename = argv[optind++]; |
| 1017 | |
Stefan Hajnoczi | adfe078 | 2010-04-13 10:29:35 +0100 | [diff] [blame] | 1018 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_NO_BACKING); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1019 | if (!bs) { |
| 1020 | return 1; |
| 1021 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1022 | bdrv_get_format(bs, fmt_name, sizeof(fmt_name)); |
| 1023 | bdrv_get_geometry(bs, &total_sectors); |
| 1024 | get_human_readable_size(size_buf, sizeof(size_buf), total_sectors * 512); |
bellard | 57d1a2b | 2004-08-03 21:15:11 +0000 | [diff] [blame] | 1025 | allocated_size = get_allocated_file_size(filename); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1026 | if (allocated_size < 0) { |
blueswir1 | a10ea30 | 2008-08-24 10:30:33 +0000 | [diff] [blame] | 1027 | snprintf(dsize_buf, sizeof(dsize_buf), "unavailable"); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1028 | } else { |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 1029 | get_human_readable_size(dsize_buf, sizeof(dsize_buf), |
bellard | de167e4 | 2005-04-28 21:15:08 +0000 | [diff] [blame] | 1030 | allocated_size); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1031 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1032 | printf("image: %s\n" |
| 1033 | "file format: %s\n" |
bellard | ec3757d | 2006-06-14 15:50:07 +0000 | [diff] [blame] | 1034 | "virtual size: %s (%" PRId64 " bytes)\n" |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1035 | "disk size: %s\n", |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 1036 | filename, fmt_name, size_buf, |
bellard | ec3757d | 2006-06-14 15:50:07 +0000 | [diff] [blame] | 1037 | (total_sectors * 512), |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1038 | dsize_buf); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1039 | if (bdrv_is_encrypted(bs)) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1040 | printf("encrypted: yes\n"); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1041 | } |
bellard | faea38e | 2006-08-05 21:31:00 +0000 | [diff] [blame] | 1042 | if (bdrv_get_info(bs, &bdi) >= 0) { |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1043 | if (bdi.cluster_size != 0) { |
bellard | faea38e | 2006-08-05 21:31:00 +0000 | [diff] [blame] | 1044 | printf("cluster_size: %d\n", bdi.cluster_size); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1045 | } |
bellard | faea38e | 2006-08-05 21:31:00 +0000 | [diff] [blame] | 1046 | } |
bellard | 93b6b2a | 2006-08-01 15:51:11 +0000 | [diff] [blame] | 1047 | bdrv_get_backing_filename(bs, backing_filename, sizeof(backing_filename)); |
bellard | faea38e | 2006-08-05 21:31:00 +0000 | [diff] [blame] | 1048 | if (backing_filename[0] != '\0') { |
bellard | 93b6b2a | 2006-08-01 15:51:11 +0000 | [diff] [blame] | 1049 | path_combine(backing_filename2, sizeof(backing_filename2), |
| 1050 | filename, backing_filename); |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 1051 | printf("backing file: %s (actual path: %s)\n", |
bellard | 93b6b2a | 2006-08-01 15:51:11 +0000 | [diff] [blame] | 1052 | backing_filename, |
| 1053 | backing_filename2); |
bellard | faea38e | 2006-08-05 21:31:00 +0000 | [diff] [blame] | 1054 | } |
| 1055 | dump_snapshots(bs); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1056 | bdrv_delete(bs); |
| 1057 | return 0; |
| 1058 | } |
| 1059 | |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1060 | #define SNAPSHOT_LIST 1 |
| 1061 | #define SNAPSHOT_CREATE 2 |
| 1062 | #define SNAPSHOT_APPLY 3 |
| 1063 | #define SNAPSHOT_DELETE 4 |
| 1064 | |
Stuart Brady | 153859b | 2009-06-07 00:42:17 +0100 | [diff] [blame] | 1065 | static int img_snapshot(int argc, char **argv) |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1066 | { |
| 1067 | BlockDriverState *bs; |
| 1068 | QEMUSnapshotInfo sn; |
| 1069 | char *filename, *snapshot_name = NULL; |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1070 | int c, ret = 0, bdrv_oflags; |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1071 | int action = 0; |
| 1072 | qemu_timeval tv; |
| 1073 | |
Naphtali Sprei | f5edb01 | 2010-01-17 16:48:13 +0200 | [diff] [blame] | 1074 | bdrv_oflags = BDRV_O_RDWR; |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1075 | /* Parse commandline parameters */ |
| 1076 | for(;;) { |
| 1077 | c = getopt(argc, argv, "la:c:d:h"); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1078 | if (c == -1) { |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1079 | break; |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1080 | } |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1081 | switch(c) { |
Jes Sorensen | ef87394 | 2010-12-06 15:25:40 +0100 | [diff] [blame] | 1082 | case '?': |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1083 | case 'h': |
| 1084 | help(); |
Stuart Brady | 153859b | 2009-06-07 00:42:17 +0100 | [diff] [blame] | 1085 | return 0; |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1086 | case 'l': |
| 1087 | if (action) { |
| 1088 | help(); |
Stuart Brady | 153859b | 2009-06-07 00:42:17 +0100 | [diff] [blame] | 1089 | return 0; |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1090 | } |
| 1091 | action = SNAPSHOT_LIST; |
Naphtali Sprei | f5edb01 | 2010-01-17 16:48:13 +0200 | [diff] [blame] | 1092 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1093 | break; |
| 1094 | case 'a': |
| 1095 | if (action) { |
| 1096 | help(); |
Stuart Brady | 153859b | 2009-06-07 00:42:17 +0100 | [diff] [blame] | 1097 | return 0; |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1098 | } |
| 1099 | action = SNAPSHOT_APPLY; |
| 1100 | snapshot_name = optarg; |
| 1101 | break; |
| 1102 | case 'c': |
| 1103 | if (action) { |
| 1104 | help(); |
Stuart Brady | 153859b | 2009-06-07 00:42:17 +0100 | [diff] [blame] | 1105 | return 0; |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1106 | } |
| 1107 | action = SNAPSHOT_CREATE; |
| 1108 | snapshot_name = optarg; |
| 1109 | break; |
| 1110 | case 'd': |
| 1111 | if (action) { |
| 1112 | help(); |
Stuart Brady | 153859b | 2009-06-07 00:42:17 +0100 | [diff] [blame] | 1113 | return 0; |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1114 | } |
| 1115 | action = SNAPSHOT_DELETE; |
| 1116 | snapshot_name = optarg; |
| 1117 | break; |
| 1118 | } |
| 1119 | } |
| 1120 | |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1121 | if (optind >= argc) { |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1122 | help(); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1123 | } |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1124 | filename = argv[optind++]; |
| 1125 | |
| 1126 | /* Open the image */ |
Stefan Hajnoczi | f163d07 | 2010-04-13 10:29:34 +0100 | [diff] [blame] | 1127 | bs = bdrv_new_open(filename, NULL, bdrv_oflags); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1128 | if (!bs) { |
| 1129 | return 1; |
| 1130 | } |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1131 | |
| 1132 | /* Perform the requested action */ |
| 1133 | switch(action) { |
| 1134 | case SNAPSHOT_LIST: |
| 1135 | dump_snapshots(bs); |
| 1136 | break; |
| 1137 | |
| 1138 | case SNAPSHOT_CREATE: |
| 1139 | memset(&sn, 0, sizeof(sn)); |
| 1140 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); |
| 1141 | |
| 1142 | qemu_gettimeofday(&tv); |
| 1143 | sn.date_sec = tv.tv_sec; |
| 1144 | sn.date_nsec = tv.tv_usec * 1000; |
| 1145 | |
| 1146 | ret = bdrv_snapshot_create(bs, &sn); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1147 | if (ret) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 1148 | error_report("Could not create snapshot '%s': %d (%s)", |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1149 | snapshot_name, ret, strerror(-ret)); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1150 | } |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1151 | break; |
| 1152 | |
| 1153 | case SNAPSHOT_APPLY: |
| 1154 | ret = bdrv_snapshot_goto(bs, snapshot_name); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1155 | if (ret) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 1156 | error_report("Could not apply snapshot '%s': %d (%s)", |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1157 | snapshot_name, ret, strerror(-ret)); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1158 | } |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1159 | break; |
| 1160 | |
| 1161 | case SNAPSHOT_DELETE: |
| 1162 | ret = bdrv_snapshot_delete(bs, snapshot_name); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1163 | if (ret) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 1164 | error_report("Could not delete snapshot '%s': %d (%s)", |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1165 | snapshot_name, ret, strerror(-ret)); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1166 | } |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1167 | break; |
| 1168 | } |
| 1169 | |
| 1170 | /* Cleanup */ |
| 1171 | bdrv_delete(bs); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1172 | if (ret) { |
| 1173 | return 1; |
| 1174 | } |
Stuart Brady | 153859b | 2009-06-07 00:42:17 +0100 | [diff] [blame] | 1175 | return 0; |
aliguori | f7b4a94 | 2009-01-07 17:40:15 +0000 | [diff] [blame] | 1176 | } |
| 1177 | |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1178 | static int img_rebase(int argc, char **argv) |
| 1179 | { |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1180 | BlockDriverState *bs, *bs_old_backing = NULL, *bs_new_backing = NULL; |
Stefan Hajnoczi | f163d07 | 2010-04-13 10:29:34 +0100 | [diff] [blame] | 1181 | BlockDriver *old_backing_drv, *new_backing_drv; |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1182 | char *filename; |
Kevin Wolf | e53dbee | 2010-03-02 12:14:31 +0100 | [diff] [blame] | 1183 | const char *fmt, *out_basefmt, *out_baseimg; |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1184 | int c, flags, ret; |
| 1185 | int unsafe = 0; |
| 1186 | |
| 1187 | /* Parse commandline parameters */ |
Kevin Wolf | e53dbee | 2010-03-02 12:14:31 +0100 | [diff] [blame] | 1188 | fmt = NULL; |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1189 | out_baseimg = NULL; |
| 1190 | out_basefmt = NULL; |
| 1191 | |
| 1192 | for(;;) { |
Kevin Wolf | e53dbee | 2010-03-02 12:14:31 +0100 | [diff] [blame] | 1193 | c = getopt(argc, argv, "uhf:F:b:"); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1194 | if (c == -1) { |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1195 | break; |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1196 | } |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1197 | switch(c) { |
Jes Sorensen | ef87394 | 2010-12-06 15:25:40 +0100 | [diff] [blame] | 1198 | case '?': |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1199 | case 'h': |
| 1200 | help(); |
| 1201 | return 0; |
Kevin Wolf | e53dbee | 2010-03-02 12:14:31 +0100 | [diff] [blame] | 1202 | case 'f': |
| 1203 | fmt = optarg; |
| 1204 | break; |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1205 | case 'F': |
| 1206 | out_basefmt = optarg; |
| 1207 | break; |
| 1208 | case 'b': |
| 1209 | out_baseimg = optarg; |
| 1210 | break; |
| 1211 | case 'u': |
| 1212 | unsafe = 1; |
| 1213 | break; |
| 1214 | } |
| 1215 | } |
| 1216 | |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1217 | if ((optind >= argc) || !out_baseimg) { |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1218 | help(); |
Jes Sorensen | b8fb60d | 2010-12-06 15:25:39 +0100 | [diff] [blame] | 1219 | } |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1220 | filename = argv[optind++]; |
| 1221 | |
| 1222 | /* |
| 1223 | * Open the images. |
| 1224 | * |
| 1225 | * Ignore the old backing file for unsafe rebase in case we want to correct |
| 1226 | * the reference to a renamed or moved backing file. |
| 1227 | */ |
Stefan Hajnoczi | adfe078 | 2010-04-13 10:29:35 +0100 | [diff] [blame] | 1228 | flags = BDRV_O_FLAGS | BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
Stefan Hajnoczi | f163d07 | 2010-04-13 10:29:34 +0100 | [diff] [blame] | 1229 | bs = bdrv_new_open(filename, fmt, flags); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1230 | if (!bs) { |
| 1231 | return 1; |
| 1232 | } |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1233 | |
| 1234 | /* Find the right drivers for the backing files */ |
| 1235 | old_backing_drv = NULL; |
| 1236 | new_backing_drv = NULL; |
| 1237 | |
| 1238 | if (!unsafe && bs->backing_format[0] != '\0') { |
| 1239 | old_backing_drv = bdrv_find_format(bs->backing_format); |
| 1240 | if (old_backing_drv == NULL) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 1241 | error_report("Invalid format name: '%s'", bs->backing_format); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1242 | ret = -1; |
| 1243 | goto out; |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1244 | } |
| 1245 | } |
| 1246 | |
| 1247 | if (out_basefmt != NULL) { |
| 1248 | new_backing_drv = bdrv_find_format(out_basefmt); |
| 1249 | if (new_backing_drv == NULL) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 1250 | error_report("Invalid format name: '%s'", out_basefmt); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1251 | ret = -1; |
| 1252 | goto out; |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1253 | } |
| 1254 | } |
| 1255 | |
| 1256 | /* For safe rebasing we need to compare old and new backing file */ |
| 1257 | if (unsafe) { |
| 1258 | /* Make the compiler happy */ |
| 1259 | bs_old_backing = NULL; |
| 1260 | bs_new_backing = NULL; |
| 1261 | } else { |
| 1262 | char backing_name[1024]; |
| 1263 | |
| 1264 | bs_old_backing = bdrv_new("old_backing"); |
| 1265 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1266 | ret = bdrv_open(bs_old_backing, backing_name, BDRV_O_FLAGS, |
| 1267 | old_backing_drv); |
| 1268 | if (ret) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 1269 | error_report("Could not open old backing file '%s'", backing_name); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1270 | goto out; |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1271 | } |
| 1272 | |
| 1273 | bs_new_backing = bdrv_new("new_backing"); |
Kevin Wolf | cdbae85 | 2010-08-17 18:58:55 +0200 | [diff] [blame] | 1274 | ret = bdrv_open(bs_new_backing, out_baseimg, BDRV_O_FLAGS, |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1275 | new_backing_drv); |
| 1276 | if (ret) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 1277 | error_report("Could not open new backing file '%s'", out_baseimg); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1278 | goto out; |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1279 | } |
| 1280 | } |
| 1281 | |
| 1282 | /* |
| 1283 | * Check each unallocated cluster in the COW file. If it is unallocated, |
| 1284 | * accesses go to the backing file. We must therefore compare this cluster |
| 1285 | * in the old and new backing file, and if they differ we need to copy it |
| 1286 | * from the old backing file into the COW file. |
| 1287 | * |
| 1288 | * If qemu-img crashes during this step, no harm is done. The content of |
| 1289 | * the image is the same as the original one at any time. |
| 1290 | */ |
| 1291 | if (!unsafe) { |
| 1292 | uint64_t num_sectors; |
| 1293 | uint64_t sector; |
Kevin Wolf | cc60e32 | 2010-04-29 14:47:48 +0200 | [diff] [blame] | 1294 | int n; |
TeLeMan | d6771bf | 2010-02-08 16:20:00 +0800 | [diff] [blame] | 1295 | uint8_t * buf_old; |
| 1296 | uint8_t * buf_new; |
| 1297 | |
| 1298 | buf_old = qemu_malloc(IO_BUF_SIZE); |
| 1299 | buf_new = qemu_malloc(IO_BUF_SIZE); |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1300 | |
| 1301 | bdrv_get_geometry(bs, &num_sectors); |
| 1302 | |
| 1303 | for (sector = 0; sector < num_sectors; sector += n) { |
| 1304 | |
| 1305 | /* How many sectors can we handle with the next read? */ |
| 1306 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { |
| 1307 | n = (IO_BUF_SIZE / 512); |
| 1308 | } else { |
| 1309 | n = num_sectors - sector; |
| 1310 | } |
| 1311 | |
| 1312 | /* If the cluster is allocated, we don't need to take action */ |
Kevin Wolf | cc60e32 | 2010-04-29 14:47:48 +0200 | [diff] [blame] | 1313 | ret = bdrv_is_allocated(bs, sector, n, &n); |
| 1314 | if (ret) { |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1315 | continue; |
| 1316 | } |
| 1317 | |
| 1318 | /* Read old and new backing file */ |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1319 | ret = bdrv_read(bs_old_backing, sector, buf_old, n); |
| 1320 | if (ret < 0) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 1321 | error_report("error while reading from old backing file"); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1322 | goto out; |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1323 | } |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1324 | ret = bdrv_read(bs_new_backing, sector, buf_new, n); |
| 1325 | if (ret < 0) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 1326 | error_report("error while reading from new backing file"); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1327 | goto out; |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1328 | } |
| 1329 | |
| 1330 | /* If they differ, we need to write to the COW file */ |
| 1331 | uint64_t written = 0; |
| 1332 | |
| 1333 | while (written < n) { |
| 1334 | int pnum; |
| 1335 | |
| 1336 | if (compare_sectors(buf_old + written * 512, |
Kevin Wolf | 60b1bd4 | 2010-02-17 12:32:59 +0100 | [diff] [blame] | 1337 | buf_new + written * 512, n - written, &pnum)) |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1338 | { |
| 1339 | ret = bdrv_write(bs, sector + written, |
| 1340 | buf_old + written * 512, pnum); |
| 1341 | if (ret < 0) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 1342 | error_report("Error while writing to COW image: %s", |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1343 | strerror(-ret)); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1344 | goto out; |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1345 | } |
| 1346 | } |
| 1347 | |
| 1348 | written += pnum; |
| 1349 | } |
| 1350 | } |
TeLeMan | d6771bf | 2010-02-08 16:20:00 +0800 | [diff] [blame] | 1351 | |
| 1352 | qemu_free(buf_old); |
| 1353 | qemu_free(buf_new); |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1354 | } |
| 1355 | |
| 1356 | /* |
| 1357 | * Change the backing file. All clusters that are different from the old |
| 1358 | * backing file are overwritten in the COW file now, so the visible content |
| 1359 | * doesn't change when we switch the backing file. |
| 1360 | */ |
| 1361 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); |
| 1362 | if (ret == -ENOSPC) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 1363 | error_report("Could not change the backing file to '%s': No " |
| 1364 | "space left in the file header", out_baseimg); |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1365 | } else if (ret < 0) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 1366 | error_report("Could not change the backing file to '%s': %s", |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1367 | out_baseimg, strerror(-ret)); |
| 1368 | } |
| 1369 | |
| 1370 | /* |
| 1371 | * TODO At this point it is possible to check if any clusters that are |
| 1372 | * allocated in the COW file are the same in the backing file. If so, they |
| 1373 | * could be dropped from the COW file. Don't do this before switching the |
| 1374 | * backing file, in case of a crash this would lead to corruption. |
| 1375 | */ |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1376 | out: |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1377 | /* Cleanup */ |
| 1378 | if (!unsafe) { |
| 1379 | bdrv_delete(bs_old_backing); |
| 1380 | bdrv_delete(bs_new_backing); |
| 1381 | } |
| 1382 | |
| 1383 | bdrv_delete(bs); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1384 | if (ret) { |
| 1385 | return 1; |
| 1386 | } |
Kevin Wolf | 3e85c6f | 2010-01-12 12:55:18 +0100 | [diff] [blame] | 1387 | return 0; |
| 1388 | } |
| 1389 | |
Stefan Hajnoczi | ae6b0ed | 2010-04-24 09:12:12 +0100 | [diff] [blame] | 1390 | static int img_resize(int argc, char **argv) |
| 1391 | { |
| 1392 | int c, ret, relative; |
| 1393 | const char *filename, *fmt, *size; |
| 1394 | int64_t n, total_size; |
Jes Sorensen | 2a81998 | 2010-12-06 17:08:31 +0100 | [diff] [blame] | 1395 | BlockDriverState *bs = NULL; |
Stefan Hajnoczi | ae6b0ed | 2010-04-24 09:12:12 +0100 | [diff] [blame] | 1396 | QEMUOptionParameter *param; |
| 1397 | QEMUOptionParameter resize_options[] = { |
| 1398 | { |
| 1399 | .name = BLOCK_OPT_SIZE, |
| 1400 | .type = OPT_SIZE, |
| 1401 | .help = "Virtual disk size" |
| 1402 | }, |
| 1403 | { NULL } |
| 1404 | }; |
| 1405 | |
| 1406 | fmt = NULL; |
| 1407 | for(;;) { |
| 1408 | c = getopt(argc, argv, "f:h"); |
| 1409 | if (c == -1) { |
| 1410 | break; |
| 1411 | } |
| 1412 | switch(c) { |
Jes Sorensen | ef87394 | 2010-12-06 15:25:40 +0100 | [diff] [blame] | 1413 | case '?': |
Stefan Hajnoczi | ae6b0ed | 2010-04-24 09:12:12 +0100 | [diff] [blame] | 1414 | case 'h': |
| 1415 | help(); |
| 1416 | break; |
| 1417 | case 'f': |
| 1418 | fmt = optarg; |
| 1419 | break; |
| 1420 | } |
| 1421 | } |
| 1422 | if (optind + 1 >= argc) { |
| 1423 | help(); |
| 1424 | } |
| 1425 | filename = argv[optind++]; |
| 1426 | size = argv[optind++]; |
| 1427 | |
| 1428 | /* Choose grow, shrink, or absolute resize mode */ |
| 1429 | switch (size[0]) { |
| 1430 | case '+': |
| 1431 | relative = 1; |
| 1432 | size++; |
| 1433 | break; |
| 1434 | case '-': |
| 1435 | relative = -1; |
| 1436 | size++; |
| 1437 | break; |
| 1438 | default: |
| 1439 | relative = 0; |
| 1440 | break; |
| 1441 | } |
| 1442 | |
| 1443 | /* Parse size */ |
| 1444 | param = parse_option_parameters("", resize_options, NULL); |
| 1445 | if (set_option_parameter(param, BLOCK_OPT_SIZE, size)) { |
| 1446 | /* Error message already printed when size parsing fails */ |
Jes Sorensen | 2a81998 | 2010-12-06 17:08:31 +0100 | [diff] [blame] | 1447 | ret = -1; |
| 1448 | goto out; |
Stefan Hajnoczi | ae6b0ed | 2010-04-24 09:12:12 +0100 | [diff] [blame] | 1449 | } |
| 1450 | n = get_option_parameter(param, BLOCK_OPT_SIZE)->value.n; |
| 1451 | free_option_parameters(param); |
| 1452 | |
| 1453 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1454 | if (!bs) { |
Jes Sorensen | 2a81998 | 2010-12-06 17:08:31 +0100 | [diff] [blame] | 1455 | ret = -1; |
| 1456 | goto out; |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1457 | } |
Stefan Hajnoczi | ae6b0ed | 2010-04-24 09:12:12 +0100 | [diff] [blame] | 1458 | |
| 1459 | if (relative) { |
| 1460 | total_size = bdrv_getlength(bs) + n * relative; |
| 1461 | } else { |
| 1462 | total_size = n; |
| 1463 | } |
| 1464 | if (total_size <= 0) { |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 1465 | error_report("New image size must be positive"); |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1466 | ret = -1; |
| 1467 | goto out; |
Stefan Hajnoczi | ae6b0ed | 2010-04-24 09:12:12 +0100 | [diff] [blame] | 1468 | } |
| 1469 | |
| 1470 | ret = bdrv_truncate(bs, total_size); |
| 1471 | switch (ret) { |
| 1472 | case 0: |
| 1473 | printf("Image resized.\n"); |
| 1474 | break; |
| 1475 | case -ENOTSUP: |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 1476 | error_report("This image format does not support resize"); |
Stefan Hajnoczi | ae6b0ed | 2010-04-24 09:12:12 +0100 | [diff] [blame] | 1477 | break; |
| 1478 | case -EACCES: |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 1479 | error_report("Image is read-only"); |
Stefan Hajnoczi | ae6b0ed | 2010-04-24 09:12:12 +0100 | [diff] [blame] | 1480 | break; |
| 1481 | default: |
Jes Sorensen | 15654a6 | 2010-12-16 14:31:53 +0100 | [diff] [blame^] | 1482 | error_report("Error resizing image (%d)", -ret); |
Stefan Hajnoczi | ae6b0ed | 2010-04-24 09:12:12 +0100 | [diff] [blame] | 1483 | break; |
| 1484 | } |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1485 | out: |
Jes Sorensen | 2a81998 | 2010-12-06 17:08:31 +0100 | [diff] [blame] | 1486 | if (bs) { |
| 1487 | bdrv_delete(bs); |
| 1488 | } |
MORITA Kazutaka | c2abcce | 2010-06-21 04:26:35 +0900 | [diff] [blame] | 1489 | if (ret) { |
| 1490 | return 1; |
| 1491 | } |
Stefan Hajnoczi | ae6b0ed | 2010-04-24 09:12:12 +0100 | [diff] [blame] | 1492 | return 0; |
| 1493 | } |
| 1494 | |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 1495 | static const img_cmd_t img_cmds[] = { |
Stuart Brady | 153859b | 2009-06-07 00:42:17 +0100 | [diff] [blame] | 1496 | #define DEF(option, callback, arg_string) \ |
| 1497 | { option, callback }, |
| 1498 | #include "qemu-img-cmds.h" |
| 1499 | #undef DEF |
| 1500 | #undef GEN_DOCS |
| 1501 | { NULL, NULL, }, |
| 1502 | }; |
| 1503 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1504 | int main(int argc, char **argv) |
| 1505 | { |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 1506 | const img_cmd_t *cmd; |
Stuart Brady | 153859b | 2009-06-07 00:42:17 +0100 | [diff] [blame] | 1507 | const char *cmdname; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1508 | |
Kevin Wolf | 53f76e5 | 2010-12-16 15:10:32 +0100 | [diff] [blame] | 1509 | error_set_progname(argv[0]); |
| 1510 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1511 | bdrv_init(); |
| 1512 | if (argc < 2) |
| 1513 | help(); |
Stuart Brady | 153859b | 2009-06-07 00:42:17 +0100 | [diff] [blame] | 1514 | cmdname = argv[1]; |
aurel32 | 8f9b157 | 2009-02-09 18:14:31 +0000 | [diff] [blame] | 1515 | argc--; argv++; |
Stuart Brady | 153859b | 2009-06-07 00:42:17 +0100 | [diff] [blame] | 1516 | |
| 1517 | /* find the command */ |
| 1518 | for(cmd = img_cmds; cmd->name != NULL; cmd++) { |
| 1519 | if (!strcmp(cmdname, cmd->name)) { |
| 1520 | return cmd->handler(argc, argv); |
| 1521 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1522 | } |
Stuart Brady | 153859b | 2009-06-07 00:42:17 +0100 | [diff] [blame] | 1523 | |
| 1524 | /* not found */ |
| 1525 | help(); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1526 | return 0; |
| 1527 | } |