David 'Digit' Turner | cb42a1b | 2010-12-23 02:54:08 +0100 | [diff] [blame] | 1 | /* |
| 2 | * QEMU host block devices |
| 3 | * |
| 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 5 | * |
| 6 | * This work is licensed under the terms of the GNU GPL, version 2 or |
| 7 | * later. See the COPYING file in the top-level directory. |
| 8 | */ |
| 9 | |
David 'Digit' Turner | e1e03df | 2013-12-15 00:42:21 +0100 | [diff] [blame] | 10 | #include "block/block.h" |
David 'Digit' Turner | 34c48ff | 2013-12-15 00:25:03 +0100 | [diff] [blame] | 11 | #include "sysemu/blockdev.h" |
David 'Digit' Turner | 6af6765 | 2013-12-14 23:49:32 +0100 | [diff] [blame] | 12 | #include "monitor/monitor.h" |
David 'Digit' Turner | 1c31e3e | 2013-12-14 20:07:17 +0100 | [diff] [blame] | 13 | #include "qapi/qmp/qerror.h" |
David 'Digit' Turner | 93e0d9c | 2013-12-15 01:00:34 +0100 | [diff] [blame] | 14 | #include "qemu/option.h" |
David 'Digit' Turner | 1c31e3e | 2013-12-14 20:07:17 +0100 | [diff] [blame] | 15 | #include "qemu/config-file.h" |
David 'Digit' Turner | 34c48ff | 2013-12-15 00:25:03 +0100 | [diff] [blame] | 16 | #include "sysemu/sysemu.h" |
David 'Digit' Turner | cb42a1b | 2010-12-23 02:54:08 +0100 | [diff] [blame] | 17 | |
| 18 | static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives); |
| 19 | |
| 20 | /* |
| 21 | * We automatically delete the drive when a device using it gets |
| 22 | * unplugged. Questionable feature, but we can't just drop it. |
| 23 | * Device models call blockdev_mark_auto_del() to schedule the |
| 24 | * automatic deletion, and generic qdev code calls blockdev_auto_del() |
| 25 | * when deletion is actually safe. |
| 26 | */ |
| 27 | void blockdev_mark_auto_del(BlockDriverState *bs) |
| 28 | { |
| 29 | DriveInfo *dinfo = drive_get_by_blockdev(bs); |
| 30 | |
| 31 | dinfo->auto_del = 1; |
| 32 | } |
| 33 | |
| 34 | void blockdev_auto_del(BlockDriverState *bs) |
| 35 | { |
| 36 | DriveInfo *dinfo = drive_get_by_blockdev(bs); |
| 37 | |
| 38 | if (dinfo->auto_del) { |
| 39 | drive_uninit(dinfo); |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | QemuOpts *drive_add(const char *file, const char *fmt, ...) |
| 44 | { |
| 45 | va_list ap; |
| 46 | char optstr[1024]; |
| 47 | QemuOpts *opts; |
| 48 | |
| 49 | va_start(ap, fmt); |
| 50 | vsnprintf(optstr, sizeof(optstr), fmt, ap); |
| 51 | va_end(ap); |
| 52 | |
| 53 | opts = qemu_opts_parse(qemu_find_opts("drive"), optstr, 0); |
| 54 | if (!opts) { |
| 55 | return NULL; |
| 56 | } |
| 57 | if (file) |
| 58 | qemu_opt_set(opts, "file", file); |
| 59 | return opts; |
| 60 | } |
| 61 | |
| 62 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) |
| 63 | { |
| 64 | DriveInfo *dinfo; |
| 65 | |
| 66 | /* seek interface, bus and unit */ |
| 67 | |
| 68 | QTAILQ_FOREACH(dinfo, &drives, next) { |
| 69 | if (dinfo->type == type && |
| 70 | dinfo->bus == bus && |
| 71 | dinfo->unit == unit) |
| 72 | return dinfo; |
| 73 | } |
| 74 | |
| 75 | return NULL; |
| 76 | } |
| 77 | |
| 78 | int drive_get_max_bus(BlockInterfaceType type) |
| 79 | { |
| 80 | int max_bus; |
| 81 | DriveInfo *dinfo; |
| 82 | |
| 83 | max_bus = -1; |
| 84 | QTAILQ_FOREACH(dinfo, &drives, next) { |
| 85 | if(dinfo->type == type && |
| 86 | dinfo->bus > max_bus) |
| 87 | max_bus = dinfo->bus; |
| 88 | } |
| 89 | return max_bus; |
| 90 | } |
| 91 | |
| 92 | DriveInfo *drive_get_by_blockdev(BlockDriverState *bs) |
| 93 | { |
| 94 | DriveInfo *dinfo; |
| 95 | |
| 96 | QTAILQ_FOREACH(dinfo, &drives, next) { |
| 97 | if (dinfo->bdrv == bs) { |
| 98 | return dinfo; |
| 99 | } |
| 100 | } |
| 101 | return NULL; |
| 102 | } |
| 103 | |
| 104 | static void bdrv_format_print(void *opaque, const char *name) |
| 105 | { |
| 106 | fprintf(stderr, " %s", name); |
| 107 | } |
| 108 | |
| 109 | void drive_uninit(DriveInfo *dinfo) |
| 110 | { |
| 111 | qemu_opts_del(dinfo->opts); |
| 112 | bdrv_delete(dinfo->bdrv); |
| 113 | QTAILQ_REMOVE(&drives, dinfo, next); |
David 'Digit' Turner | aa8236d | 2014-01-10 17:02:29 +0100 | [diff] [blame] | 114 | g_free(dinfo); |
David 'Digit' Turner | cb42a1b | 2010-12-23 02:54:08 +0100 | [diff] [blame] | 115 | } |
| 116 | |
| 117 | static int parse_block_error_action(const char *buf, int is_read) |
| 118 | { |
| 119 | if (!strcmp(buf, "ignore")) { |
| 120 | return BLOCK_ERR_IGNORE; |
| 121 | } else if (!is_read && !strcmp(buf, "enospc")) { |
| 122 | return BLOCK_ERR_STOP_ENOSPC; |
| 123 | } else if (!strcmp(buf, "stop")) { |
| 124 | return BLOCK_ERR_STOP_ANY; |
| 125 | } else if (!strcmp(buf, "report")) { |
| 126 | return BLOCK_ERR_REPORT; |
| 127 | } else { |
| 128 | fprintf(stderr, "qemu: '%s' invalid %s error action\n", |
| 129 | buf, is_read ? "read" : "write"); |
| 130 | return -1; |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi, int *fatal_error) |
| 135 | { |
| 136 | const char *buf; |
| 137 | const char *file = NULL; |
| 138 | char devname[128]; |
| 139 | const char *serial; |
| 140 | const char *mediastr = ""; |
| 141 | BlockInterfaceType type; |
| 142 | enum { MEDIA_DISK, MEDIA_CDROM } media; |
| 143 | int bus_id, unit_id; |
| 144 | int cyls, heads, secs, translation; |
| 145 | BlockDriver *drv = NULL; |
| 146 | int max_devs; |
| 147 | int index; |
| 148 | int ro = 0; |
| 149 | int bdrv_flags = 0; |
| 150 | int on_read_error, on_write_error; |
| 151 | const char *devaddr; |
| 152 | DriveInfo *dinfo; |
| 153 | int snapshot = 0; |
| 154 | int ret; |
| 155 | |
| 156 | *fatal_error = 1; |
| 157 | |
| 158 | translation = BIOS_ATA_TRANSLATION_AUTO; |
| 159 | |
| 160 | if (default_to_scsi) { |
| 161 | type = IF_SCSI; |
| 162 | max_devs = MAX_SCSI_DEVS; |
| 163 | pstrcpy(devname, sizeof(devname), "scsi"); |
| 164 | } else { |
| 165 | type = IF_IDE; |
| 166 | max_devs = MAX_IDE_DEVS; |
| 167 | pstrcpy(devname, sizeof(devname), "ide"); |
| 168 | } |
| 169 | media = MEDIA_DISK; |
| 170 | |
| 171 | /* extract parameters */ |
| 172 | bus_id = qemu_opt_get_number(opts, "bus", 0); |
| 173 | unit_id = qemu_opt_get_number(opts, "unit", -1); |
| 174 | index = qemu_opt_get_number(opts, "index", -1); |
| 175 | |
| 176 | cyls = qemu_opt_get_number(opts, "cyls", 0); |
| 177 | heads = qemu_opt_get_number(opts, "heads", 0); |
| 178 | secs = qemu_opt_get_number(opts, "secs", 0); |
| 179 | |
| 180 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
| 181 | ro = qemu_opt_get_bool(opts, "readonly", 0); |
| 182 | |
| 183 | file = qemu_opt_get(opts, "file"); |
| 184 | serial = qemu_opt_get(opts, "serial"); |
| 185 | |
| 186 | if ((buf = qemu_opt_get(opts, "if")) != NULL) { |
| 187 | pstrcpy(devname, sizeof(devname), buf); |
| 188 | if (!strcmp(buf, "ide")) { |
| 189 | type = IF_IDE; |
| 190 | max_devs = MAX_IDE_DEVS; |
| 191 | } else if (!strcmp(buf, "scsi")) { |
| 192 | type = IF_SCSI; |
| 193 | max_devs = MAX_SCSI_DEVS; |
| 194 | } else if (!strcmp(buf, "floppy")) { |
| 195 | type = IF_FLOPPY; |
| 196 | max_devs = 0; |
| 197 | } else if (!strcmp(buf, "pflash")) { |
| 198 | type = IF_PFLASH; |
| 199 | max_devs = 0; |
| 200 | } else if (!strcmp(buf, "mtd")) { |
| 201 | type = IF_MTD; |
| 202 | max_devs = 0; |
| 203 | } else if (!strcmp(buf, "sd")) { |
| 204 | type = IF_SD; |
| 205 | max_devs = 0; |
| 206 | } else if (!strcmp(buf, "virtio")) { |
| 207 | type = IF_VIRTIO; |
| 208 | max_devs = 0; |
| 209 | } else if (!strcmp(buf, "xen")) { |
| 210 | type = IF_XEN; |
| 211 | max_devs = 0; |
| 212 | } else if (!strcmp(buf, "none")) { |
| 213 | type = IF_NONE; |
| 214 | max_devs = 0; |
| 215 | } else { |
| 216 | fprintf(stderr, "qemu: unsupported bus type '%s'\n", buf); |
| 217 | return NULL; |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | if (cyls || heads || secs) { |
| 222 | if (cyls < 1 || (type == IF_IDE && cyls > 16383)) { |
| 223 | fprintf(stderr, "qemu: '%s' invalid physical cyls number\n", buf); |
| 224 | return NULL; |
| 225 | } |
| 226 | if (heads < 1 || (type == IF_IDE && heads > 16)) { |
| 227 | fprintf(stderr, "qemu: '%s' invalid physical heads number\n", buf); |
| 228 | return NULL; |
| 229 | } |
| 230 | if (secs < 1 || (type == IF_IDE && secs > 63)) { |
| 231 | fprintf(stderr, "qemu: '%s' invalid physical secs number\n", buf); |
| 232 | return NULL; |
| 233 | } |
| 234 | } |
| 235 | |
| 236 | if ((buf = qemu_opt_get(opts, "trans")) != NULL) { |
| 237 | if (!cyls) { |
| 238 | fprintf(stderr, |
| 239 | "qemu: '%s' trans must be used with cyls,heads and secs\n", |
| 240 | buf); |
| 241 | return NULL; |
| 242 | } |
| 243 | if (!strcmp(buf, "none")) |
| 244 | translation = BIOS_ATA_TRANSLATION_NONE; |
| 245 | else if (!strcmp(buf, "lba")) |
| 246 | translation = BIOS_ATA_TRANSLATION_LBA; |
| 247 | else if (!strcmp(buf, "auto")) |
| 248 | translation = BIOS_ATA_TRANSLATION_AUTO; |
| 249 | else { |
| 250 | fprintf(stderr, "qemu: '%s' invalid translation type\n", buf); |
| 251 | return NULL; |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | if ((buf = qemu_opt_get(opts, "media")) != NULL) { |
| 256 | if (!strcmp(buf, "disk")) { |
| 257 | media = MEDIA_DISK; |
| 258 | } else if (!strcmp(buf, "cdrom")) { |
| 259 | if (cyls || secs || heads) { |
| 260 | fprintf(stderr, |
| 261 | "qemu: '%s' invalid physical CHS format\n", buf); |
| 262 | return NULL; |
| 263 | } |
| 264 | media = MEDIA_CDROM; |
| 265 | } else { |
| 266 | fprintf(stderr, "qemu: '%s' invalid media\n", buf); |
| 267 | return NULL; |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | if ((buf = qemu_opt_get(opts, "cache")) != NULL) { |
| 272 | if (!strcmp(buf, "off") || !strcmp(buf, "none")) { |
| 273 | bdrv_flags |= BDRV_O_NOCACHE; |
| 274 | } else if (!strcmp(buf, "writeback")) { |
| 275 | bdrv_flags |= BDRV_O_CACHE_WB; |
| 276 | } else if (!strcmp(buf, "unsafe")) { |
| 277 | bdrv_flags |= BDRV_O_CACHE_WB; |
| 278 | bdrv_flags |= BDRV_O_NO_FLUSH; |
| 279 | } else if (!strcmp(buf, "writethrough")) { |
| 280 | /* this is the default */ |
| 281 | } else { |
| 282 | fprintf(stderr, "qemu: invalid cache option\n"); |
| 283 | return NULL; |
| 284 | } |
| 285 | } |
| 286 | |
| 287 | #ifdef CONFIG_LINUX_AIO |
| 288 | if ((buf = qemu_opt_get(opts, "aio")) != NULL) { |
| 289 | if (!strcmp(buf, "native")) { |
| 290 | bdrv_flags |= BDRV_O_NATIVE_AIO; |
| 291 | } else if (!strcmp(buf, "threads")) { |
| 292 | /* this is the default */ |
| 293 | } else { |
| 294 | fprintf(stderr, "qemu: invalid aio option\n"); |
| 295 | return NULL; |
| 296 | } |
| 297 | } |
| 298 | #endif |
| 299 | |
| 300 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { |
| 301 | if (strcmp(buf, "?") == 0) { |
| 302 | fprintf(stderr, "qemu: Supported formats:"); |
| 303 | bdrv_iterate_format(bdrv_format_print, NULL); |
| 304 | fprintf(stderr, "\n"); |
| 305 | return NULL; |
| 306 | } |
| 307 | drv = bdrv_find_whitelisted_format(buf); |
| 308 | if (!drv) { |
| 309 | fprintf(stderr, "qemu: '%s' invalid format\n", buf); |
| 310 | return NULL; |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | on_write_error = BLOCK_ERR_STOP_ENOSPC; |
| 315 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
| 316 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) { |
| 317 | fprintf(stderr, "werror is no supported by this format\n"); |
| 318 | return NULL; |
| 319 | } |
| 320 | |
| 321 | on_write_error = parse_block_error_action(buf, 0); |
| 322 | if (on_write_error < 0) { |
| 323 | return NULL; |
| 324 | } |
| 325 | } |
| 326 | |
| 327 | on_read_error = BLOCK_ERR_REPORT; |
| 328 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
| 329 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_NONE) { |
| 330 | fprintf(stderr, "rerror is no supported by this format\n"); |
| 331 | return NULL; |
| 332 | } |
| 333 | |
| 334 | on_read_error = parse_block_error_action(buf, 1); |
| 335 | if (on_read_error < 0) { |
| 336 | return NULL; |
| 337 | } |
| 338 | } |
| 339 | |
| 340 | if ((devaddr = qemu_opt_get(opts, "addr")) != NULL) { |
| 341 | if (type != IF_VIRTIO) { |
| 342 | fprintf(stderr, "addr is not supported\n"); |
| 343 | return NULL; |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | /* compute bus and unit according index */ |
| 348 | |
| 349 | if (index != -1) { |
| 350 | if (bus_id != 0 || unit_id != -1) { |
| 351 | fprintf(stderr, |
| 352 | "qemu: index cannot be used with bus and unit\n"); |
| 353 | return NULL; |
| 354 | } |
| 355 | if (max_devs == 0) |
| 356 | { |
| 357 | unit_id = index; |
| 358 | bus_id = 0; |
| 359 | } else { |
| 360 | unit_id = index % max_devs; |
| 361 | bus_id = index / max_devs; |
| 362 | } |
| 363 | } |
| 364 | |
| 365 | /* if user doesn't specify a unit_id, |
| 366 | * try to find the first free |
| 367 | */ |
| 368 | |
| 369 | if (unit_id == -1) { |
| 370 | unit_id = 0; |
| 371 | while (drive_get(type, bus_id, unit_id) != NULL) { |
| 372 | unit_id++; |
| 373 | if (max_devs && unit_id >= max_devs) { |
| 374 | unit_id -= max_devs; |
| 375 | bus_id++; |
| 376 | } |
| 377 | } |
| 378 | } |
| 379 | |
| 380 | /* check unit id */ |
| 381 | |
| 382 | if (max_devs && unit_id >= max_devs) { |
| 383 | fprintf(stderr, "qemu: unit %d too big (max is %d)\n", |
| 384 | unit_id, max_devs - 1); |
| 385 | return NULL; |
| 386 | } |
| 387 | |
| 388 | /* |
| 389 | * ignore multiple definitions |
| 390 | */ |
| 391 | |
| 392 | if (drive_get(type, bus_id, unit_id) != NULL) { |
| 393 | *fatal_error = 0; |
| 394 | return NULL; |
| 395 | } |
| 396 | |
| 397 | /* init */ |
| 398 | |
David 'Digit' Turner | aa8236d | 2014-01-10 17:02:29 +0100 | [diff] [blame] | 399 | dinfo = g_malloc0(sizeof(*dinfo)); |
David 'Digit' Turner | cb42a1b | 2010-12-23 02:54:08 +0100 | [diff] [blame] | 400 | if ((buf = qemu_opts_id(opts)) != NULL) { |
David 'Digit' Turner | aa8236d | 2014-01-10 17:02:29 +0100 | [diff] [blame] | 401 | dinfo->id = g_strdup(buf); |
David 'Digit' Turner | cb42a1b | 2010-12-23 02:54:08 +0100 | [diff] [blame] | 402 | } else { |
| 403 | /* no id supplied -> create one */ |
David 'Digit' Turner | aa8236d | 2014-01-10 17:02:29 +0100 | [diff] [blame] | 404 | dinfo->id = g_malloc0(32); |
David 'Digit' Turner | cb42a1b | 2010-12-23 02:54:08 +0100 | [diff] [blame] | 405 | if (type == IF_IDE || type == IF_SCSI) |
| 406 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; |
| 407 | if (max_devs) |
| 408 | snprintf(dinfo->id, 32, "%s%i%s%i", |
| 409 | devname, bus_id, mediastr, unit_id); |
| 410 | else |
| 411 | snprintf(dinfo->id, 32, "%s%s%i", |
| 412 | devname, mediastr, unit_id); |
| 413 | } |
| 414 | dinfo->bdrv = bdrv_new(dinfo->id); |
| 415 | dinfo->devaddr = devaddr; |
| 416 | dinfo->type = type; |
| 417 | dinfo->bus = bus_id; |
| 418 | dinfo->unit = unit_id; |
| 419 | dinfo->opts = opts; |
| 420 | if (serial) |
| 421 | strncpy(dinfo->serial, serial, sizeof(dinfo->serial) - 1); |
| 422 | QTAILQ_INSERT_TAIL(&drives, dinfo, next); |
| 423 | |
| 424 | bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error); |
| 425 | |
| 426 | switch(type) { |
| 427 | case IF_IDE: |
| 428 | case IF_SCSI: |
| 429 | case IF_XEN: |
| 430 | case IF_NONE: |
| 431 | switch(media) { |
| 432 | case MEDIA_DISK: |
| 433 | if (cyls != 0) { |
| 434 | bdrv_set_geometry_hint(dinfo->bdrv, cyls, heads, secs); |
| 435 | bdrv_set_translation_hint(dinfo->bdrv, translation); |
| 436 | } |
| 437 | break; |
| 438 | case MEDIA_CDROM: |
| 439 | bdrv_set_type_hint(dinfo->bdrv, BDRV_TYPE_CDROM); |
| 440 | break; |
| 441 | } |
| 442 | break; |
| 443 | case IF_SD: |
| 444 | /* FIXME: This isn't really a floppy, but it's a reasonable |
| 445 | approximation. */ |
| 446 | case IF_FLOPPY: |
| 447 | bdrv_set_type_hint(dinfo->bdrv, BDRV_TYPE_FLOPPY); |
| 448 | break; |
| 449 | case IF_PFLASH: |
| 450 | case IF_MTD: |
| 451 | break; |
| 452 | case IF_VIRTIO: |
| 453 | /* add virtio block device */ |
| 454 | opts = qemu_opts_create(qemu_find_opts("device"), NULL, 0); |
| 455 | qemu_opt_set(opts, "driver", "virtio-blk-pci"); |
| 456 | qemu_opt_set(opts, "drive", dinfo->id); |
| 457 | if (devaddr) |
| 458 | qemu_opt_set(opts, "addr", devaddr); |
| 459 | break; |
| 460 | case IF_COUNT: |
| 461 | abort(); |
| 462 | } |
| 463 | if (!file || !*file) { |
| 464 | *fatal_error = 0; |
| 465 | return NULL; |
| 466 | } |
| 467 | if (snapshot) { |
| 468 | /* always use cache=unsafe with snapshot */ |
| 469 | bdrv_flags &= ~BDRV_O_CACHE_MASK; |
| 470 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); |
| 471 | } |
| 472 | |
| 473 | if (media == MEDIA_CDROM) { |
| 474 | /* CDROM is fine for any interface, don't check. */ |
| 475 | ro = 1; |
| 476 | } else if (ro == 1) { |
| 477 | if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY && type != IF_NONE) { |
| 478 | fprintf(stderr, "qemu: readonly flag not supported for drive with this interface\n"); |
| 479 | return NULL; |
| 480 | } |
| 481 | } |
| 482 | |
| 483 | bdrv_flags |= ro ? 0 : BDRV_O_RDWR; |
| 484 | |
| 485 | ret = bdrv_open(dinfo->bdrv, file, bdrv_flags, drv); |
| 486 | if (ret < 0) { |
| 487 | fprintf(stderr, "qemu: could not open disk image %s: %s\n", |
| 488 | file, strerror(-ret)); |
| 489 | return NULL; |
| 490 | } |
| 491 | |
| 492 | if (bdrv_key_required(dinfo->bdrv)) |
| 493 | autostart = 0; |
| 494 | *fatal_error = 0; |
| 495 | return dinfo; |
| 496 | } |
| 497 | |
| 498 | void do_commit(Monitor *mon, const QDict *qdict) |
| 499 | { |
| 500 | const char *device = qdict_get_str(qdict, "device"); |
| 501 | BlockDriverState *bs; |
| 502 | |
| 503 | if (!strcmp(device, "all")) { |
| 504 | bdrv_commit_all(); |
| 505 | } else { |
| 506 | bs = bdrv_find(device); |
| 507 | if (!bs) { |
| 508 | qerror_report(QERR_DEVICE_NOT_FOUND, device); |
| 509 | return; |
| 510 | } |
| 511 | bdrv_commit(bs); |
| 512 | } |
| 513 | } |
| 514 | |
| 515 | static int eject_device(Monitor *mon, BlockDriverState *bs, int force) |
| 516 | { |
| 517 | if (!force) { |
| 518 | if (!bdrv_is_removable(bs)) { |
| 519 | qerror_report(QERR_DEVICE_NOT_REMOVABLE, |
| 520 | bdrv_get_device_name(bs)); |
| 521 | return -1; |
| 522 | } |
| 523 | if (bdrv_is_locked(bs)) { |
| 524 | qerror_report(QERR_DEVICE_LOCKED, bdrv_get_device_name(bs)); |
| 525 | return -1; |
| 526 | } |
| 527 | } |
| 528 | bdrv_close(bs); |
| 529 | return 0; |
| 530 | } |
| 531 | |
| 532 | int do_eject(Monitor *mon, const QDict *qdict, QObject **ret_data) |
| 533 | { |
| 534 | BlockDriverState *bs; |
| 535 | int force = qdict_get_try_bool(qdict, "force", 0); |
| 536 | const char *filename = qdict_get_str(qdict, "device"); |
| 537 | |
| 538 | bs = bdrv_find(filename); |
| 539 | if (!bs) { |
| 540 | qerror_report(QERR_DEVICE_NOT_FOUND, filename); |
| 541 | return -1; |
| 542 | } |
| 543 | return eject_device(mon, bs, force); |
| 544 | } |
| 545 | |
| 546 | int do_block_set_passwd(Monitor *mon, const QDict *qdict, |
| 547 | QObject **ret_data) |
| 548 | { |
| 549 | BlockDriverState *bs; |
| 550 | int err; |
| 551 | |
| 552 | bs = bdrv_find(qdict_get_str(qdict, "device")); |
| 553 | if (!bs) { |
| 554 | qerror_report(QERR_DEVICE_NOT_FOUND, qdict_get_str(qdict, "device")); |
| 555 | return -1; |
| 556 | } |
| 557 | |
| 558 | err = bdrv_set_key(bs, qdict_get_str(qdict, "password")); |
| 559 | if (err == -EINVAL) { |
| 560 | qerror_report(QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
| 561 | return -1; |
| 562 | } else if (err < 0) { |
| 563 | qerror_report(QERR_INVALID_PASSWORD); |
| 564 | return -1; |
| 565 | } |
| 566 | |
| 567 | return 0; |
| 568 | } |
| 569 | |
David 'Digit' Turner | aa1180c | 2014-01-28 06:08:00 +0100 | [diff] [blame] | 570 | #ifndef CONFIG_ANDROID |
| 571 | // Monitor support disabled on Android. |
David 'Digit' Turner | cb42a1b | 2010-12-23 02:54:08 +0100 | [diff] [blame] | 572 | int do_change_block(Monitor *mon, const char *device, |
| 573 | const char *filename, const char *fmt) |
| 574 | { |
| 575 | BlockDriverState *bs; |
| 576 | BlockDriver *drv = NULL; |
| 577 | int bdrv_flags; |
| 578 | |
| 579 | bs = bdrv_find(device); |
| 580 | if (!bs) { |
| 581 | qerror_report(QERR_DEVICE_NOT_FOUND, device); |
| 582 | return -1; |
| 583 | } |
| 584 | if (fmt) { |
| 585 | drv = bdrv_find_whitelisted_format(fmt); |
| 586 | if (!drv) { |
| 587 | qerror_report(QERR_INVALID_BLOCK_FORMAT, fmt); |
| 588 | return -1; |
| 589 | } |
| 590 | } |
| 591 | if (eject_device(mon, bs, 0) < 0) { |
| 592 | return -1; |
| 593 | } |
| 594 | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR; |
| 595 | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0; |
| 596 | if (bdrv_open(bs, filename, bdrv_flags, drv) < 0) { |
David 'Digit' Turner | 910aea9 | 2014-01-15 16:53:38 +0100 | [diff] [blame] | 597 | qerror_report(QERR_IO_ERROR); |
David 'Digit' Turner | cb42a1b | 2010-12-23 02:54:08 +0100 | [diff] [blame] | 598 | return -1; |
| 599 | } |
| 600 | return monitor_read_bdrv_key_start(mon, bs, NULL, NULL); |
| 601 | } |
David 'Digit' Turner | aa1180c | 2014-01-28 06:08:00 +0100 | [diff] [blame] | 602 | #endif |