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666daa68
MA
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.
3618a094
MA
8 *
9 * This file incorporates work covered by the following copyright and
10 * permission notice:
11 *
12 * Copyright (c) 2003-2008 Fabrice Bellard
13 *
14 * Permission is hereby granted, free of charge, to any person obtaining a copy
15 * of this software and associated documentation files (the "Software"), to deal
16 * in the Software without restriction, including without limitation the rights
17 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
18 * copies of the Software, and to permit persons to whom the Software is
19 * furnished to do so, subject to the following conditions:
20 *
21 * The above copyright notice and this permission notice shall be included in
22 * all copies or substantial portions of the Software.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
25 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
27 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
28 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
29 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
30 * THE SOFTWARE.
666daa68
MA
31 */
32
9c17d615 33#include "sysemu/blockdev.h"
0d09e41a 34#include "hw/block/block.h"
737e150e 35#include "block/blockjob.h"
83c9089e 36#include "monitor/monitor.h"
7b1b5d19 37#include "qapi/qmp/qerror.h"
1de7afc9
PB
38#include "qemu/option.h"
39#include "qemu/config-file.h"
7b1b5d19 40#include "qapi/qmp/types.h"
9c17d615 41#include "sysemu/sysemu.h"
737e150e 42#include "block/block_int.h"
a4dea8a9 43#include "qmp-commands.h"
12bd451f 44#include "trace.h"
9c17d615 45#include "sysemu/arch_init.h"
666daa68 46
c9b62a7e 47static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives);
0006383e 48extern QemuOptsList qemu_common_drive_opts;
666daa68 49
1960966d
MA
50static const char *const if_name[IF_COUNT] = {
51 [IF_NONE] = "none",
52 [IF_IDE] = "ide",
53 [IF_SCSI] = "scsi",
54 [IF_FLOPPY] = "floppy",
55 [IF_PFLASH] = "pflash",
56 [IF_MTD] = "mtd",
57 [IF_SD] = "sd",
58 [IF_VIRTIO] = "virtio",
59 [IF_XEN] = "xen",
60};
61
62static const int if_max_devs[IF_COUNT] = {
27d6bf40
MA
63 /*
64 * Do not change these numbers! They govern how drive option
65 * index maps to unit and bus. That mapping is ABI.
66 *
67 * All controllers used to imlement if=T drives need to support
68 * if_max_devs[T] units, for any T with if_max_devs[T] != 0.
69 * Otherwise, some index values map to "impossible" bus, unit
70 * values.
71 *
72 * For instance, if you change [IF_SCSI] to 255, -drive
73 * if=scsi,index=12 no longer means bus=1,unit=5, but
74 * bus=0,unit=12. With an lsi53c895a controller (7 units max),
75 * the drive can't be set up. Regression.
76 */
77 [IF_IDE] = 2,
78 [IF_SCSI] = 7,
1960966d
MA
79};
80
14bafc54
MA
81/*
82 * We automatically delete the drive when a device using it gets
83 * unplugged. Questionable feature, but we can't just drop it.
84 * Device models call blockdev_mark_auto_del() to schedule the
85 * automatic deletion, and generic qdev code calls blockdev_auto_del()
86 * when deletion is actually safe.
87 */
88void blockdev_mark_auto_del(BlockDriverState *bs)
89{
90 DriveInfo *dinfo = drive_get_by_blockdev(bs);
91
12bde0ee
PB
92 if (bs->job) {
93 block_job_cancel(bs->job);
94 }
0fc0f1fa
RH
95 if (dinfo) {
96 dinfo->auto_del = 1;
97 }
14bafc54
MA
98}
99
100void blockdev_auto_del(BlockDriverState *bs)
101{
102 DriveInfo *dinfo = drive_get_by_blockdev(bs);
103
0fc0f1fa 104 if (dinfo && dinfo->auto_del) {
84fb3925 105 drive_put_ref(dinfo);
14bafc54
MA
106 }
107}
108
505a7fb1
MA
109static int drive_index_to_bus_id(BlockInterfaceType type, int index)
110{
111 int max_devs = if_max_devs[type];
112 return max_devs ? index / max_devs : 0;
113}
114
115static int drive_index_to_unit_id(BlockInterfaceType type, int index)
116{
117 int max_devs = if_max_devs[type];
118 return max_devs ? index % max_devs : index;
119}
120
2292ddae
MA
121QemuOpts *drive_def(const char *optstr)
122{
123 return qemu_opts_parse(qemu_find_opts("drive"), optstr, 0);
124}
125
126QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file,
5645b0f4 127 const char *optstr)
666daa68 128{
666daa68 129 QemuOpts *opts;
2292ddae 130 char buf[32];
666daa68 131
2292ddae 132 opts = drive_def(optstr);
666daa68
MA
133 if (!opts) {
134 return NULL;
135 }
2292ddae
MA
136 if (type != IF_DEFAULT) {
137 qemu_opt_set(opts, "if", if_name[type]);
138 }
139 if (index >= 0) {
140 snprintf(buf, sizeof(buf), "%d", index);
141 qemu_opt_set(opts, "index", buf);
142 }
666daa68
MA
143 if (file)
144 qemu_opt_set(opts, "file", file);
145 return opts;
146}
147
148DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit)
149{
150 DriveInfo *dinfo;
151
152 /* seek interface, bus and unit */
153
154 QTAILQ_FOREACH(dinfo, &drives, next) {
155 if (dinfo->type == type &&
156 dinfo->bus == bus &&
157 dinfo->unit == unit)
158 return dinfo;
159 }
160
161 return NULL;
162}
163
f1bd51ac
MA
164DriveInfo *drive_get_by_index(BlockInterfaceType type, int index)
165{
166 return drive_get(type,
167 drive_index_to_bus_id(type, index),
168 drive_index_to_unit_id(type, index));
169}
170
666daa68
MA
171int drive_get_max_bus(BlockInterfaceType type)
172{
173 int max_bus;
174 DriveInfo *dinfo;
175
176 max_bus = -1;
177 QTAILQ_FOREACH(dinfo, &drives, next) {
178 if(dinfo->type == type &&
179 dinfo->bus > max_bus)
180 max_bus = dinfo->bus;
181 }
182 return max_bus;
183}
184
13839974
MA
185/* Get a block device. This should only be used for single-drive devices
186 (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the
187 appropriate bus. */
188DriveInfo *drive_get_next(BlockInterfaceType type)
189{
190 static int next_block_unit[IF_COUNT];
191
192 return drive_get(type, 0, next_block_unit[type]++);
193}
194
e4700e59 195DriveInfo *drive_get_by_blockdev(BlockDriverState *bs)
666daa68
MA
196{
197 DriveInfo *dinfo;
198
199 QTAILQ_FOREACH(dinfo, &drives, next) {
e4700e59
MA
200 if (dinfo->bdrv == bs) {
201 return dinfo;
202 }
666daa68 203 }
e4700e59 204 return NULL;
666daa68
MA
205}
206
666daa68
MA
207static void bdrv_format_print(void *opaque, const char *name)
208{
807105a7 209 error_printf(" %s", name);
666daa68
MA
210}
211
84fb3925 212static void drive_uninit(DriveInfo *dinfo)
666daa68
MA
213{
214 qemu_opts_del(dinfo->opts);
215 bdrv_delete(dinfo->bdrv);
7267c094 216 g_free(dinfo->id);
666daa68 217 QTAILQ_REMOVE(&drives, dinfo, next);
bb44619b 218 g_free(dinfo->serial);
7267c094 219 g_free(dinfo);
666daa68
MA
220}
221
84fb3925
MT
222void drive_put_ref(DriveInfo *dinfo)
223{
224 assert(dinfo->refcount);
225 if (--dinfo->refcount == 0) {
226 drive_uninit(dinfo);
227 }
228}
229
230void drive_get_ref(DriveInfo *dinfo)
231{
232 dinfo->refcount++;
233}
234
aa398a5c
SH
235typedef struct {
236 QEMUBH *bh;
237 DriveInfo *dinfo;
238} DrivePutRefBH;
239
240static void drive_put_ref_bh(void *opaque)
241{
242 DrivePutRefBH *s = opaque;
243
244 drive_put_ref(s->dinfo);
245 qemu_bh_delete(s->bh);
246 g_free(s);
247}
248
249/*
250 * Release a drive reference in a BH
251 *
252 * It is not possible to use drive_put_ref() from a callback function when the
253 * callers still need the drive. In such cases we schedule a BH to release the
254 * reference.
255 */
256static void drive_put_ref_bh_schedule(DriveInfo *dinfo)
257{
258 DrivePutRefBH *s;
259
260 s = g_new(DrivePutRefBH, 1);
261 s->bh = qemu_bh_new(drive_put_ref_bh, s);
262 s->dinfo = dinfo;
263 qemu_bh_schedule(s->bh);
264}
265
1ceee0d5 266static int parse_block_error_action(const char *buf, bool is_read)
666daa68
MA
267{
268 if (!strcmp(buf, "ignore")) {
92aa5c6d 269 return BLOCKDEV_ON_ERROR_IGNORE;
666daa68 270 } else if (!is_read && !strcmp(buf, "enospc")) {
92aa5c6d 271 return BLOCKDEV_ON_ERROR_ENOSPC;
666daa68 272 } else if (!strcmp(buf, "stop")) {
92aa5c6d 273 return BLOCKDEV_ON_ERROR_STOP;
666daa68 274 } else if (!strcmp(buf, "report")) {
92aa5c6d 275 return BLOCKDEV_ON_ERROR_REPORT;
666daa68 276 } else {
807105a7
MA
277 error_report("'%s' invalid %s error action",
278 buf, is_read ? "read" : "write");
666daa68
MA
279 return -1;
280 }
281}
282
c546194f 283static bool do_check_io_limits(BlockIOLimit *io_limits, Error **errp)
0563e191
ZYW
284{
285 bool bps_flag;
286 bool iops_flag;
287
288 assert(io_limits);
289
290 bps_flag = (io_limits->bps[BLOCK_IO_LIMIT_TOTAL] != 0)
291 && ((io_limits->bps[BLOCK_IO_LIMIT_READ] != 0)
292 || (io_limits->bps[BLOCK_IO_LIMIT_WRITE] != 0));
293 iops_flag = (io_limits->iops[BLOCK_IO_LIMIT_TOTAL] != 0)
294 && ((io_limits->iops[BLOCK_IO_LIMIT_READ] != 0)
295 || (io_limits->iops[BLOCK_IO_LIMIT_WRITE] != 0));
296 if (bps_flag || iops_flag) {
c546194f
SH
297 error_setg(errp, "bps(iops) and bps_rd/bps_wr(iops_rd/iops_wr) "
298 "cannot be used at the same time");
0563e191
ZYW
299 return false;
300 }
301
7d81c141
SH
302 if (io_limits->bps[BLOCK_IO_LIMIT_TOTAL] < 0 ||
303 io_limits->bps[BLOCK_IO_LIMIT_WRITE] < 0 ||
304 io_limits->bps[BLOCK_IO_LIMIT_READ] < 0 ||
305 io_limits->iops[BLOCK_IO_LIMIT_TOTAL] < 0 ||
306 io_limits->iops[BLOCK_IO_LIMIT_WRITE] < 0 ||
307 io_limits->iops[BLOCK_IO_LIMIT_READ] < 0) {
308 error_setg(errp, "bps and iops values must be 0 or greater");
309 return false;
310 }
311
0563e191
ZYW
312 return true;
313}
314
0006383e 315DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type)
666daa68
MA
316{
317 const char *buf;
318 const char *file = NULL;
666daa68
MA
319 const char *serial;
320 const char *mediastr = "";
321 BlockInterfaceType type;
322 enum { MEDIA_DISK, MEDIA_CDROM } media;
323 int bus_id, unit_id;
324 int cyls, heads, secs, translation;
325 BlockDriver *drv = NULL;
326 int max_devs;
327 int index;
328 int ro = 0;
329 int bdrv_flags = 0;
330 int on_read_error, on_write_error;
331 const char *devaddr;
332 DriveInfo *dinfo;
0563e191 333 BlockIOLimit io_limits;
666daa68 334 int snapshot = 0;
fb0490f6 335 bool copy_on_read;
666daa68 336 int ret;
c546194f 337 Error *error = NULL;
0006383e
KW
338 QemuOpts *opts;
339 QDict *bs_opts;
340 const char *id;
666daa68 341
666daa68 342 translation = BIOS_ATA_TRANSLATION_AUTO;
666daa68
MA
343 media = MEDIA_DISK;
344
0006383e
KW
345 /* Check common options by copying from all_opts to opts, all other options
346 * are stored in bs_opts. */
347 id = qemu_opts_id(all_opts);
348 opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error);
349 if (error_is_set(&error)) {
350 qerror_report_err(error);
351 error_free(error);
352 return NULL;
353 }
354
355 bs_opts = qdict_new();
356 qemu_opts_to_qdict(all_opts, bs_opts);
357 qemu_opts_absorb_qdict(opts, bs_opts, &error);
358 if (error_is_set(&error)) {
359 qerror_report_err(error);
360 error_free(error);
361 return NULL;
362 }
363
364 if (id) {
365 qdict_del(bs_opts, "id");
366 }
367
666daa68
MA
368 /* extract parameters */
369 bus_id = qemu_opt_get_number(opts, "bus", 0);
370 unit_id = qemu_opt_get_number(opts, "unit", -1);
371 index = qemu_opt_get_number(opts, "index", -1);
372
373 cyls = qemu_opt_get_number(opts, "cyls", 0);
374 heads = qemu_opt_get_number(opts, "heads", 0);
375 secs = qemu_opt_get_number(opts, "secs", 0);
376
377 snapshot = qemu_opt_get_bool(opts, "snapshot", 0);
378 ro = qemu_opt_get_bool(opts, "readonly", 0);
fb0490f6 379 copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false);
666daa68
MA
380
381 file = qemu_opt_get(opts, "file");
382 serial = qemu_opt_get(opts, "serial");
383
384 if ((buf = qemu_opt_get(opts, "if")) != NULL) {
1960966d
MA
385 for (type = 0; type < IF_COUNT && strcmp(buf, if_name[type]); type++)
386 ;
387 if (type == IF_COUNT) {
807105a7 388 error_report("unsupported bus type '%s'", buf);
666daa68
MA
389 return NULL;
390 }
2d3999fe 391 } else {
2d0d2837 392 type = block_default_type;
666daa68 393 }
2d3999fe 394
1960966d 395 max_devs = if_max_devs[type];
666daa68
MA
396
397 if (cyls || heads || secs) {
aaea3f36 398 if (cyls < 1) {
807105a7 399 error_report("invalid physical cyls number");
666daa68
MA
400 return NULL;
401 }
aaea3f36 402 if (heads < 1) {
807105a7 403 error_report("invalid physical heads number");
666daa68
MA
404 return NULL;
405 }
aaea3f36 406 if (secs < 1) {
807105a7 407 error_report("invalid physical secs number");
666daa68
MA
408 return NULL;
409 }
410 }
411
412 if ((buf = qemu_opt_get(opts, "trans")) != NULL) {
413 if (!cyls) {
e4080f9b 414 error_report("'%s' trans must be used with cyls, heads and secs",
807105a7 415 buf);
666daa68
MA
416 return NULL;
417 }
418 if (!strcmp(buf, "none"))
419 translation = BIOS_ATA_TRANSLATION_NONE;
420 else if (!strcmp(buf, "lba"))
421 translation = BIOS_ATA_TRANSLATION_LBA;
422 else if (!strcmp(buf, "auto"))
423 translation = BIOS_ATA_TRANSLATION_AUTO;
424 else {
807105a7 425 error_report("'%s' invalid translation type", buf);
666daa68
MA
426 return NULL;
427 }
428 }
429
430 if ((buf = qemu_opt_get(opts, "media")) != NULL) {
431 if (!strcmp(buf, "disk")) {
432 media = MEDIA_DISK;
433 } else if (!strcmp(buf, "cdrom")) {
434 if (cyls || secs || heads) {
e7ff8f0e 435 error_report("CHS can't be set with media=%s", buf);
666daa68
MA
436 return NULL;
437 }
438 media = MEDIA_CDROM;
439 } else {
807105a7 440 error_report("'%s' invalid media", buf);
666daa68
MA
441 return NULL;
442 }
443 }
444
a9384aff
PB
445 if ((buf = qemu_opt_get(opts, "discard")) != NULL) {
446 if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) {
447 error_report("invalid discard option");
448 return NULL;
449 }
450 }
451
1f212b9d 452 bdrv_flags |= BDRV_O_CACHE_WB;
666daa68 453 if ((buf = qemu_opt_get(opts, "cache")) != NULL) {
c3993cdc
SH
454 if (bdrv_parse_cache_flags(buf, &bdrv_flags) != 0) {
455 error_report("invalid cache option");
456 return NULL;
666daa68
MA
457 }
458 }
459
460#ifdef CONFIG_LINUX_AIO
461 if ((buf = qemu_opt_get(opts, "aio")) != NULL) {
462 if (!strcmp(buf, "native")) {
463 bdrv_flags |= BDRV_O_NATIVE_AIO;
464 } else if (!strcmp(buf, "threads")) {
465 /* this is the default */
466 } else {
807105a7 467 error_report("invalid aio option");
666daa68
MA
468 return NULL;
469 }
470 }
471#endif
472
473 if ((buf = qemu_opt_get(opts, "format")) != NULL) {
c8057f95
PM
474 if (is_help_option(buf)) {
475 error_printf("Supported formats:");
476 bdrv_iterate_format(bdrv_format_print, NULL);
477 error_printf("\n");
478 return NULL;
666daa68
MA
479 }
480 drv = bdrv_find_whitelisted_format(buf);
481 if (!drv) {
807105a7 482 error_report("'%s' invalid format", buf);
666daa68
MA
483 return NULL;
484 }
485 }
486
0563e191
ZYW
487 /* disk I/O throttling */
488 io_limits.bps[BLOCK_IO_LIMIT_TOTAL] =
489 qemu_opt_get_number(opts, "bps", 0);
490 io_limits.bps[BLOCK_IO_LIMIT_READ] =
491 qemu_opt_get_number(opts, "bps_rd", 0);
492 io_limits.bps[BLOCK_IO_LIMIT_WRITE] =
493 qemu_opt_get_number(opts, "bps_wr", 0);
494 io_limits.iops[BLOCK_IO_LIMIT_TOTAL] =
495 qemu_opt_get_number(opts, "iops", 0);
496 io_limits.iops[BLOCK_IO_LIMIT_READ] =
497 qemu_opt_get_number(opts, "iops_rd", 0);
498 io_limits.iops[BLOCK_IO_LIMIT_WRITE] =
499 qemu_opt_get_number(opts, "iops_wr", 0);
500
c546194f
SH
501 if (!do_check_io_limits(&io_limits, &error)) {
502 error_report("%s", error_get_pretty(error));
503 error_free(error);
0563e191
ZYW
504 return NULL;
505 }
506
0d92d17a
JK
507 if (qemu_opt_get(opts, "boot") != NULL) {
508 fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be "
509 "ignored. Future versions will reject this parameter. Please "
510 "update your scripts.\n");
511 }
512
92aa5c6d 513 on_write_error = BLOCKDEV_ON_ERROR_ENOSPC;
666daa68
MA
514 if ((buf = qemu_opt_get(opts, "werror")) != NULL) {
515 if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) {
807105a7 516 error_report("werror is not supported by this bus type");
666daa68
MA
517 return NULL;
518 }
519
520 on_write_error = parse_block_error_action(buf, 0);
521 if (on_write_error < 0) {
522 return NULL;
523 }
524 }
525
92aa5c6d 526 on_read_error = BLOCKDEV_ON_ERROR_REPORT;
666daa68 527 if ((buf = qemu_opt_get(opts, "rerror")) != NULL) {
5dba48a8 528 if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) {
807105a7 529 error_report("rerror is not supported by this bus type");
666daa68
MA
530 return NULL;
531 }
532
533 on_read_error = parse_block_error_action(buf, 1);
534 if (on_read_error < 0) {
535 return NULL;
536 }
537 }
538
539 if ((devaddr = qemu_opt_get(opts, "addr")) != NULL) {
540 if (type != IF_VIRTIO) {
807105a7 541 error_report("addr is not supported by this bus type");
666daa68
MA
542 return NULL;
543 }
544 }
545
546 /* compute bus and unit according index */
547
548 if (index != -1) {
549 if (bus_id != 0 || unit_id != -1) {
807105a7 550 error_report("index cannot be used with bus and unit");
666daa68
MA
551 return NULL;
552 }
505a7fb1
MA
553 bus_id = drive_index_to_bus_id(type, index);
554 unit_id = drive_index_to_unit_id(type, index);
666daa68
MA
555 }
556
557 /* if user doesn't specify a unit_id,
558 * try to find the first free
559 */
560
561 if (unit_id == -1) {
562 unit_id = 0;
563 while (drive_get(type, bus_id, unit_id) != NULL) {
564 unit_id++;
565 if (max_devs && unit_id >= max_devs) {
566 unit_id -= max_devs;
567 bus_id++;
568 }
569 }
570 }
571
572 /* check unit id */
573
574 if (max_devs && unit_id >= max_devs) {
807105a7
MA
575 error_report("unit %d too big (max is %d)",
576 unit_id, max_devs - 1);
666daa68
MA
577 return NULL;
578 }
579
580 /*
4e5d9b57 581 * catch multiple definitions
666daa68
MA
582 */
583
584 if (drive_get(type, bus_id, unit_id) != NULL) {
4e5d9b57
MA
585 error_report("drive with bus=%d, unit=%d (index=%d) exists",
586 bus_id, unit_id, index);
666daa68
MA
587 return NULL;
588 }
589
590 /* init */
591
7267c094 592 dinfo = g_malloc0(sizeof(*dinfo));
666daa68 593 if ((buf = qemu_opts_id(opts)) != NULL) {
7267c094 594 dinfo->id = g_strdup(buf);
666daa68
MA
595 } else {
596 /* no id supplied -> create one */
7267c094 597 dinfo->id = g_malloc0(32);
666daa68
MA
598 if (type == IF_IDE || type == IF_SCSI)
599 mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd";
600 if (max_devs)
601 snprintf(dinfo->id, 32, "%s%i%s%i",
79d21d5b 602 if_name[type], bus_id, mediastr, unit_id);
666daa68
MA
603 else
604 snprintf(dinfo->id, 32, "%s%s%i",
79d21d5b 605 if_name[type], mediastr, unit_id);
666daa68
MA
606 }
607 dinfo->bdrv = bdrv_new(dinfo->id);
80dd1aae
KS
608 dinfo->bdrv->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0;
609 dinfo->bdrv->read_only = ro;
666daa68
MA
610 dinfo->devaddr = devaddr;
611 dinfo->type = type;
612 dinfo->bus = bus_id;
613 dinfo->unit = unit_id;
317bb412
MA
614 dinfo->cyls = cyls;
615 dinfo->heads = heads;
616 dinfo->secs = secs;
617 dinfo->trans = translation;
0006383e 618 dinfo->opts = all_opts;
84fb3925 619 dinfo->refcount = 1;
bb44619b
KW
620 if (serial != NULL) {
621 dinfo->serial = g_strdup(serial);
622 }
666daa68
MA
623 QTAILQ_INSERT_TAIL(&drives, dinfo, next);
624
abd7f68d
MA
625 bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error);
626
0563e191
ZYW
627 /* disk I/O throttling */
628 bdrv_set_io_limits(dinfo->bdrv, &io_limits);
629
666daa68
MA
630 switch(type) {
631 case IF_IDE:
632 case IF_SCSI:
633 case IF_XEN:
634 case IF_NONE:
2b584959 635 dinfo->media_cd = media == MEDIA_CDROM;
666daa68
MA
636 break;
637 case IF_SD:
666daa68 638 case IF_FLOPPY:
666daa68
MA
639 case IF_PFLASH:
640 case IF_MTD:
641 break;
642 case IF_VIRTIO:
0006383e 643 {
666daa68 644 /* add virtio block device */
0006383e
KW
645 QemuOpts *devopts;
646 devopts = qemu_opts_create_nofail(qemu_find_opts("device"));
eeb9c1b5 647 if (arch_type == QEMU_ARCH_S390X) {
0006383e 648 qemu_opt_set(devopts, "driver", "virtio-blk-s390");
eeb9c1b5 649 } else {
0006383e 650 qemu_opt_set(devopts, "driver", "virtio-blk-pci");
eeb9c1b5 651 }
0006383e 652 qemu_opt_set(devopts, "drive", dinfo->id);
666daa68 653 if (devaddr)
0006383e 654 qemu_opt_set(devopts, "addr", devaddr);
666daa68 655 break;
0006383e 656 }
2292ddae 657 default:
666daa68
MA
658 abort();
659 }
dd5b0d71 660 if (!file || !*file) {
c2ad1b0c
KW
661 if (qdict_size(bs_opts)) {
662 file = NULL;
663 } else {
664 return dinfo;
665 }
666daa68
MA
666 }
667 if (snapshot) {
668 /* always use cache=unsafe with snapshot */
669 bdrv_flags &= ~BDRV_O_CACHE_MASK;
670 bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH);
671 }
672
fb0490f6
SH
673 if (copy_on_read) {
674 bdrv_flags |= BDRV_O_COPY_ON_READ;
675 }
676
ed9d4205
BC
677 if (runstate_check(RUN_STATE_INMIGRATE)) {
678 bdrv_flags |= BDRV_O_INCOMING;
679 }
680
666daa68
MA
681 if (media == MEDIA_CDROM) {
682 /* CDROM is fine for any interface, don't check. */
683 ro = 1;
684 } else if (ro == 1) {
1e9eb78a
JJ
685 if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY &&
686 type != IF_NONE && type != IF_PFLASH) {
807105a7 687 error_report("readonly not supported by this bus type");
a9ae2bff 688 goto err;
666daa68
MA
689 }
690 }
691
692 bdrv_flags |= ro ? 0 : BDRV_O_RDWR;
693
04d4abe9
SH
694 if (ro && copy_on_read) {
695 error_report("warning: disabling copy_on_read on readonly drive");
696 }
697
0006383e
KW
698 ret = bdrv_open(dinfo->bdrv, file, bs_opts, bdrv_flags, drv);
699 bs_opts = NULL;
700
666daa68 701 if (ret < 0) {
02582abd
SW
702 if (ret == -EMEDIUMTYPE) {
703 error_report("could not open disk image %s: not in %s format",
c2ad1b0c 704 file ?: dinfo->id, drv->format_name);
02582abd
SW
705 } else {
706 error_report("could not open disk image %s: %s",
c2ad1b0c 707 file ?: dinfo->id, strerror(-ret));
02582abd 708 }
a9ae2bff 709 goto err;
666daa68
MA
710 }
711
712 if (bdrv_key_required(dinfo->bdrv))
713 autostart = 0;
0006383e
KW
714
715 qemu_opts_del(opts);
716
666daa68 717 return dinfo;
a9ae2bff
MA
718
719err:
0006383e
KW
720 qemu_opts_del(opts);
721 QDECREF(bs_opts);
a9ae2bff 722 bdrv_delete(dinfo->bdrv);
7267c094 723 g_free(dinfo->id);
a9ae2bff 724 QTAILQ_REMOVE(&drives, dinfo, next);
7267c094 725 g_free(dinfo);
a9ae2bff 726 return NULL;
666daa68
MA
727}
728
729void do_commit(Monitor *mon, const QDict *qdict)
730{
666daa68 731 const char *device = qdict_get_str(qdict, "device");
6ab4b5ab 732 BlockDriverState *bs;
e8877497 733 int ret;
666daa68 734
6ab4b5ab 735 if (!strcmp(device, "all")) {
e8877497 736 ret = bdrv_commit_all();
6ab4b5ab
MA
737 } else {
738 bs = bdrv_find(device);
ac59eb95 739 if (!bs) {
58513bde 740 monitor_printf(mon, "Device '%s' not found\n", device);
ac59eb95 741 return;
6ab4b5ab 742 }
2d3735d3 743 ret = bdrv_commit(bs);
58513bde
JC
744 }
745 if (ret < 0) {
746 monitor_printf(mon, "'commit' error for '%s': %s\n", device,
747 strerror(-ret));
666daa68
MA
748 }
749}
750
6cc2a415
PB
751static void blockdev_do_action(int kind, void *data, Error **errp)
752{
753 BlockdevAction action;
754 BlockdevActionList list;
755
756 action.kind = kind;
757 action.data = data;
758 list.value = &action;
759 list.next = NULL;
760 qmp_transaction(&list, errp);
761}
762
6106e249
LC
763void qmp_blockdev_snapshot_sync(const char *device, const char *snapshot_file,
764 bool has_format, const char *format,
6cc2a415 765 bool has_mode, enum NewImageMode mode,
6106e249 766 Error **errp)
f8882568 767{
6cc2a415
PB
768 BlockdevSnapshot snapshot = {
769 .device = (char *) device,
770 .snapshot_file = (char *) snapshot_file,
771 .has_format = has_format,
772 .format = (char *) format,
773 .has_mode = has_mode,
774 .mode = mode,
775 };
776 blockdev_do_action(BLOCKDEV_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, &snapshot,
777 errp);
f8882568
JS
778}
779
8802d1fd
JC
780
781/* New and old BlockDriverState structs for group snapshots */
52e7c241 782typedef struct BlkTransactionStates {
8802d1fd
JC
783 BlockDriverState *old_bs;
784 BlockDriverState *new_bs;
52e7c241
PB
785 QSIMPLEQ_ENTRY(BlkTransactionStates) entry;
786} BlkTransactionStates;
8802d1fd 787
e2a31e87 788static void external_snapshot_prepare(BlockdevAction *action,
9b9877ee
WX
789 BlkTransactionStates *states,
790 Error **errp)
791{
792 BlockDriver *proto_drv;
793 BlockDriver *drv;
794 int flags, ret;
795 Error *local_err = NULL;
e2a31e87
WX
796 const char *device;
797 const char *new_image_file;
798 const char *format = "qcow2";
799 enum NewImageMode mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS;
9b9877ee 800
e2a31e87
WX
801 /* get parameters */
802 g_assert(action->kind == BLOCKDEV_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC);
803
804 device = action->blockdev_snapshot_sync->device;
805 new_image_file = action->blockdev_snapshot_sync->snapshot_file;
806 if (action->blockdev_snapshot_sync->has_format) {
807 format = action->blockdev_snapshot_sync->format;
808 }
809 if (action->blockdev_snapshot_sync->has_mode) {
810 mode = action->blockdev_snapshot_sync->mode;
811 }
812
813 /* start processing */
9b9877ee
WX
814 drv = bdrv_find_format(format);
815 if (!drv) {
816 error_set(errp, QERR_INVALID_BLOCK_FORMAT, format);
817 return;
818 }
819
820 states->old_bs = bdrv_find(device);
821 if (!states->old_bs) {
822 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
823 return;
824 }
825
826 if (!bdrv_is_inserted(states->old_bs)) {
827 error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
828 return;
829 }
830
831 if (bdrv_in_use(states->old_bs)) {
832 error_set(errp, QERR_DEVICE_IN_USE, device);
833 return;
834 }
835
836 if (!bdrv_is_read_only(states->old_bs)) {
837 if (bdrv_flush(states->old_bs)) {
838 error_set(errp, QERR_IO_ERROR);
839 return;
840 }
841 }
842
843 flags = states->old_bs->open_flags;
844
845 proto_drv = bdrv_find_protocol(new_image_file);
846 if (!proto_drv) {
847 error_set(errp, QERR_INVALID_BLOCK_FORMAT, format);
848 return;
849 }
850
851 /* create new image w/backing file */
852 if (mode != NEW_IMAGE_MODE_EXISTING) {
853 bdrv_img_create(new_image_file, format,
854 states->old_bs->filename,
855 states->old_bs->drv->format_name,
856 NULL, -1, flags, &local_err, false);
857 if (error_is_set(&local_err)) {
858 error_propagate(errp, local_err);
859 return;
860 }
861 }
862
863 /* We will manually add the backing_hd field to the bs later */
864 states->new_bs = bdrv_new("");
865 /* TODO Inherit bs->options or only take explicit options with an
866 * extended QMP command? */
867 ret = bdrv_open(states->new_bs, new_image_file, NULL,
868 flags | BDRV_O_NO_BACKING, drv);
869 if (ret != 0) {
870 error_set(errp, QERR_OPEN_FILE_FAILED, new_image_file);
871 }
872}
873
3b0047e8
WX
874static void external_snapshot_commit(BlkTransactionStates *states)
875{
876 /* This removes our old bs from the bdrv_states, and adds the new bs */
877 bdrv_append(states->new_bs, states->old_bs);
878 /* We don't need (or want) to use the transactional
879 * bdrv_reopen_multiple() across all the entries at once, because we
880 * don't want to abort all of them if one of them fails the reopen */
881 bdrv_reopen(states->new_bs, states->new_bs->open_flags & ~BDRV_O_RDWR,
882 NULL);
883}
884
8802d1fd
JC
885/*
886 * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail
887 * then we do not pivot any of the devices in the group, and abandon the
888 * snapshots
889 */
52e7c241 890void qmp_transaction(BlockdevActionList *dev_list, Error **errp)
8802d1fd 891{
52e7c241
PB
892 BlockdevActionList *dev_entry = dev_list;
893 BlkTransactionStates *states, *next;
43e17041 894 Error *local_err = NULL;
8802d1fd 895
52e7c241 896 QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionStates) snap_bdrv_states;
8802d1fd
JC
897 QSIMPLEQ_INIT(&snap_bdrv_states);
898
899 /* drain all i/o before any snapshots */
900 bdrv_drain_all();
901
902 /* We don't do anything in this loop that commits us to the snapshot */
903 while (NULL != dev_entry) {
52e7c241 904 BlockdevAction *dev_info = NULL;
52e7c241 905
8802d1fd
JC
906 dev_info = dev_entry->value;
907 dev_entry = dev_entry->next;
908
52e7c241 909 states = g_malloc0(sizeof(BlkTransactionStates));
8802d1fd
JC
910 QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, states, entry);
911
52e7c241
PB
912 switch (dev_info->kind) {
913 case BLOCKDEV_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC:
e2a31e87 914 external_snapshot_prepare(dev_info, states, errp);
43e17041
LC
915 if (error_is_set(&local_err)) {
916 error_propagate(errp, local_err);
bc8b094f
PB
917 goto delete_and_fail;
918 }
9b9877ee
WX
919 break;
920 default:
921 abort();
8802d1fd
JC
922 }
923
8802d1fd
JC
924 }
925
926
927 /* Now we are going to do the actual pivot. Everything up to this point
928 * is reversible, but we are committed at this point */
929 QSIMPLEQ_FOREACH(states, &snap_bdrv_states, entry) {
3b0047e8 930 external_snapshot_commit(states);
8802d1fd
JC
931 }
932
933 /* success */
934 goto exit;
935
936delete_and_fail:
937 /*
938 * failure, and it is all-or-none; abandon each new bs, and keep using
939 * the original bs for all images
940 */
941 QSIMPLEQ_FOREACH(states, &snap_bdrv_states, entry) {
942 if (states->new_bs) {
943 bdrv_delete(states->new_bs);
944 }
945 }
946exit:
622d2419 947 QSIMPLEQ_FOREACH_SAFE(states, &snap_bdrv_states, entry, next) {
8802d1fd
JC
948 g_free(states);
949 }
8802d1fd
JC
950}
951
952
92d48558 953static void eject_device(BlockDriverState *bs, int force, Error **errp)
666daa68 954{
2d3735d3
SH
955 if (bdrv_in_use(bs)) {
956 error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs));
957 return;
958 }
2c6942fa 959 if (!bdrv_dev_has_removable_media(bs)) {
92d48558
LC
960 error_set(errp, QERR_DEVICE_NOT_REMOVABLE, bdrv_get_device_name(bs));
961 return;
ea8f942f 962 }
92d48558 963
025ccaa7
PB
964 if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) {
965 bdrv_dev_eject_request(bs, force);
966 if (!force) {
92d48558
LC
967 error_set(errp, QERR_DEVICE_LOCKED, bdrv_get_device_name(bs));
968 return;
025ccaa7 969 }
666daa68 970 }
92d48558 971
3b5276b5 972 bdrv_close(bs);
666daa68
MA
973}
974
c245b6a3 975void qmp_eject(const char *device, bool has_force, bool force, Error **errp)
666daa68
MA
976{
977 BlockDriverState *bs;
666daa68 978
c245b6a3 979 bs = bdrv_find(device);
666daa68 980 if (!bs) {
c245b6a3
LC
981 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
982 return;
92d48558
LC
983 }
984
c245b6a3 985 eject_device(bs, force, errp);
666daa68
MA
986}
987
a4dea8a9 988void qmp_block_passwd(const char *device, const char *password, Error **errp)
666daa68
MA
989{
990 BlockDriverState *bs;
991 int err;
992
a4dea8a9 993 bs = bdrv_find(device);
666daa68 994 if (!bs) {
a4dea8a9
LC
995 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
996 return;
666daa68
MA
997 }
998
a4dea8a9 999 err = bdrv_set_key(bs, password);
666daa68 1000 if (err == -EINVAL) {
a4dea8a9
LC
1001 error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs));
1002 return;
666daa68 1003 } else if (err < 0) {
a4dea8a9
LC
1004 error_set(errp, QERR_INVALID_PASSWORD);
1005 return;
666daa68 1006 }
666daa68
MA
1007}
1008
333a96ec
LC
1009static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename,
1010 int bdrv_flags, BlockDriver *drv,
1011 const char *password, Error **errp)
1012{
de9c0cec 1013 if (bdrv_open(bs, filename, NULL, bdrv_flags, drv) < 0) {
333a96ec
LC
1014 error_set(errp, QERR_OPEN_FILE_FAILED, filename);
1015 return;
1016 }
1017
1018 if (bdrv_key_required(bs)) {
1019 if (password) {
1020 if (bdrv_set_key(bs, password) < 0) {
1021 error_set(errp, QERR_INVALID_PASSWORD);
1022 }
1023 } else {
1024 error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs),
1025 bdrv_get_encrypted_filename(bs));
1026 }
1027 } else if (password) {
1028 error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs));
1029 }
1030}
1031
1032void qmp_change_blockdev(const char *device, const char *filename,
1033 bool has_format, const char *format, Error **errp)
666daa68
MA
1034{
1035 BlockDriverState *bs;
1036 BlockDriver *drv = NULL;
1037 int bdrv_flags;
92d48558 1038 Error *err = NULL;
666daa68
MA
1039
1040 bs = bdrv_find(device);
1041 if (!bs) {
333a96ec
LC
1042 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
1043 return;
666daa68 1044 }
333a96ec
LC
1045
1046 if (format) {
1047 drv = bdrv_find_whitelisted_format(format);
666daa68 1048 if (!drv) {
333a96ec
LC
1049 error_set(errp, QERR_INVALID_BLOCK_FORMAT, format);
1050 return;
666daa68
MA
1051 }
1052 }
333a96ec 1053
92d48558
LC
1054 eject_device(bs, 0, &err);
1055 if (error_is_set(&err)) {
333a96ec
LC
1056 error_propagate(errp, err);
1057 return;
666daa68 1058 }
333a96ec 1059
528f7663 1060 bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR;
199630b6 1061 bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0;
333a96ec
LC
1062
1063 qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp);
666daa68 1064}
9063f814 1065
727f005e 1066/* throttling disk I/O limits */
80047da5
LC
1067void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd,
1068 int64_t bps_wr, int64_t iops, int64_t iops_rd,
1069 int64_t iops_wr, Error **errp)
727f005e
ZYW
1070{
1071 BlockIOLimit io_limits;
727f005e
ZYW
1072 BlockDriverState *bs;
1073
80047da5 1074 bs = bdrv_find(device);
727f005e 1075 if (!bs) {
80047da5
LC
1076 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
1077 return;
727f005e
ZYW
1078 }
1079
80047da5
LC
1080 io_limits.bps[BLOCK_IO_LIMIT_TOTAL] = bps;
1081 io_limits.bps[BLOCK_IO_LIMIT_READ] = bps_rd;
1082 io_limits.bps[BLOCK_IO_LIMIT_WRITE] = bps_wr;
1083 io_limits.iops[BLOCK_IO_LIMIT_TOTAL]= iops;
1084 io_limits.iops[BLOCK_IO_LIMIT_READ] = iops_rd;
1085 io_limits.iops[BLOCK_IO_LIMIT_WRITE]= iops_wr;
727f005e 1086
c546194f 1087 if (!do_check_io_limits(&io_limits, errp)) {
80047da5 1088 return;
727f005e
ZYW
1089 }
1090
1091 bs->io_limits = io_limits;
727f005e
ZYW
1092
1093 if (!bs->io_limits_enabled && bdrv_io_limits_enabled(bs)) {
1094 bdrv_io_limits_enable(bs);
1095 } else if (bs->io_limits_enabled && !bdrv_io_limits_enabled(bs)) {
1096 bdrv_io_limits_disable(bs);
1097 } else {
1098 if (bs->block_timer) {
1099 qemu_mod_timer(bs->block_timer, qemu_get_clock_ns(vm_clock));
1100 }
1101 }
727f005e
ZYW
1102}
1103
9063f814
RH
1104int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
1105{
1106 const char *id = qdict_get_str(qdict, "id");
1107 BlockDriverState *bs;
9063f814
RH
1108
1109 bs = bdrv_find(id);
1110 if (!bs) {
1111 qerror_report(QERR_DEVICE_NOT_FOUND, id);
1112 return -1;
1113 }
8591675f
MT
1114 if (bdrv_in_use(bs)) {
1115 qerror_report(QERR_DEVICE_IN_USE, id);
1116 return -1;
1117 }
9063f814
RH
1118
1119 /* quiesce block driver; prevent further io */
922453bc 1120 bdrv_drain_all();
9063f814
RH
1121 bdrv_flush(bs);
1122 bdrv_close(bs);
1123
fa879d62 1124 /* if we have a device attached to this BlockDriverState
d22b2f41
RH
1125 * then we need to make the drive anonymous until the device
1126 * can be removed. If this is a drive with no device backing
1127 * then we can just get rid of the block driver state right here.
1128 */
fa879d62 1129 if (bdrv_get_attached_dev(bs)) {
d22b2f41
RH
1130 bdrv_make_anon(bs);
1131 } else {
1132 drive_uninit(drive_get_by_blockdev(bs));
9063f814
RH
1133 }
1134
9063f814
RH
1135 return 0;
1136}
6d4a2b3a 1137
5e7caacb 1138void qmp_block_resize(const char *device, int64_t size, Error **errp)
6d4a2b3a 1139{
6d4a2b3a 1140 BlockDriverState *bs;
8732901e 1141 int ret;
6d4a2b3a
CH
1142
1143 bs = bdrv_find(device);
1144 if (!bs) {
5e7caacb
LC
1145 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
1146 return;
6d4a2b3a
CH
1147 }
1148
1149 if (size < 0) {
939a1cc3 1150 error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size");
5e7caacb 1151 return;
6d4a2b3a
CH
1152 }
1153
92b7a08d
PL
1154 /* complete all in-flight operations before resizing the device */
1155 bdrv_drain_all();
1156
8732901e
KW
1157 ret = bdrv_truncate(bs, size);
1158 switch (ret) {
939a1cc3
SH
1159 case 0:
1160 break;
1161 case -ENOMEDIUM:
1162 error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
1163 break;
1164 case -ENOTSUP:
1165 error_set(errp, QERR_UNSUPPORTED);
1166 break;
1167 case -EACCES:
1168 error_set(errp, QERR_DEVICE_IS_READ_ONLY, device);
1169 break;
1170 case -EBUSY:
1171 error_set(errp, QERR_DEVICE_IN_USE, device);
1172 break;
1173 default:
8732901e 1174 error_setg_errno(errp, -ret, "Could not resize");
939a1cc3 1175 break;
6d4a2b3a 1176 }
6d4a2b3a 1177}
12bd451f 1178
9abf2dba 1179static void block_job_cb(void *opaque, int ret)
12bd451f
SH
1180{
1181 BlockDriverState *bs = opaque;
1182 QObject *obj;
1183
9abf2dba 1184 trace_block_job_cb(bs, bs->job, ret);
12bd451f
SH
1185
1186 assert(bs->job);
1187 obj = qobject_from_block_job(bs->job);
1188 if (ret < 0) {
1189 QDict *dict = qobject_to_qdict(obj);
1190 qdict_put(dict, "error", qstring_from_str(strerror(-ret)));
1191 }
1192
370521a1
SH
1193 if (block_job_is_cancelled(bs->job)) {
1194 monitor_protocol_event(QEVENT_BLOCK_JOB_CANCELLED, obj);
1195 } else {
1196 monitor_protocol_event(QEVENT_BLOCK_JOB_COMPLETED, obj);
1197 }
12bd451f 1198 qobject_decref(obj);
aa398a5c
SH
1199
1200 drive_put_ref_bh_schedule(drive_get_by_blockdev(bs));
12bd451f
SH
1201}
1202
1203void qmp_block_stream(const char *device, bool has_base,
1d809098
PB
1204 const char *base, bool has_speed, int64_t speed,
1205 bool has_on_error, BlockdevOnError on_error,
1206 Error **errp)
12bd451f
SH
1207{
1208 BlockDriverState *bs;
c8c3080f 1209 BlockDriverState *base_bs = NULL;
fd7f8c65 1210 Error *local_err = NULL;
12bd451f 1211
1d809098
PB
1212 if (!has_on_error) {
1213 on_error = BLOCKDEV_ON_ERROR_REPORT;
1214 }
1215
12bd451f
SH
1216 bs = bdrv_find(device);
1217 if (!bs) {
1218 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
1219 return;
1220 }
1221
12bd451f 1222 if (base) {
c8c3080f
MT
1223 base_bs = bdrv_find_backing_image(bs, base);
1224 if (base_bs == NULL) {
1225 error_set(errp, QERR_BASE_NOT_FOUND, base);
1226 return;
1227 }
12bd451f
SH
1228 }
1229
c83c66c3 1230 stream_start(bs, base_bs, base, has_speed ? speed : 0,
1d809098 1231 on_error, block_job_cb, bs, &local_err);
fd7f8c65
SH
1232 if (error_is_set(&local_err)) {
1233 error_propagate(errp, local_err);
1234 return;
12bd451f
SH
1235 }
1236
aa398a5c
SH
1237 /* Grab a reference so hotplug does not delete the BlockDriverState from
1238 * underneath us.
1239 */
1240 drive_get_ref(drive_get_by_blockdev(bs));
1241
12bd451f
SH
1242 trace_qmp_block_stream(bs, bs->job);
1243}
2d47c6e9 1244
ed61fc10
JC
1245void qmp_block_commit(const char *device,
1246 bool has_base, const char *base, const char *top,
1247 bool has_speed, int64_t speed,
1248 Error **errp)
1249{
1250 BlockDriverState *bs;
1251 BlockDriverState *base_bs, *top_bs;
1252 Error *local_err = NULL;
1253 /* This will be part of the QMP command, if/when the
1254 * BlockdevOnError change for blkmirror makes it in
1255 */
92aa5c6d 1256 BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT;
ed61fc10
JC
1257
1258 /* drain all i/o before commits */
1259 bdrv_drain_all();
1260
1261 bs = bdrv_find(device);
1262 if (!bs) {
1263 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
1264 return;
1265 }
ed61fc10
JC
1266
1267 /* default top_bs is the active layer */
1268 top_bs = bs;
1269
1270 if (top) {
1271 if (strcmp(bs->filename, top) != 0) {
1272 top_bs = bdrv_find_backing_image(bs, top);
1273 }
1274 }
1275
1276 if (top_bs == NULL) {
1277 error_setg(errp, "Top image file %s not found", top ? top : "NULL");
1278 return;
1279 }
1280
d5208c45
JC
1281 if (has_base && base) {
1282 base_bs = bdrv_find_backing_image(top_bs, base);
1283 } else {
1284 base_bs = bdrv_find_base(top_bs);
1285 }
1286
1287 if (base_bs == NULL) {
1288 error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL");
1289 return;
1290 }
1291
ed61fc10
JC
1292 commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs,
1293 &local_err);
1294 if (local_err != NULL) {
1295 error_propagate(errp, local_err);
1296 return;
1297 }
1298 /* Grab a reference so hotplug does not delete the BlockDriverState from
1299 * underneath us.
1300 */
1301 drive_get_ref(drive_get_by_blockdev(bs));
1302}
1303
08e4ed6c
PB
1304#define DEFAULT_MIRROR_BUF_SIZE (10 << 20)
1305
d9b902db
PB
1306void qmp_drive_mirror(const char *device, const char *target,
1307 bool has_format, const char *format,
1308 enum MirrorSyncMode sync,
1309 bool has_mode, enum NewImageMode mode,
b952b558 1310 bool has_speed, int64_t speed,
eee13dfe 1311 bool has_granularity, uint32_t granularity,
08e4ed6c 1312 bool has_buf_size, int64_t buf_size,
b952b558
PB
1313 bool has_on_source_error, BlockdevOnError on_source_error,
1314 bool has_on_target_error, BlockdevOnError on_target_error,
1315 Error **errp)
d9b902db 1316{
d9b902db
PB
1317 BlockDriverState *bs;
1318 BlockDriverState *source, *target_bs;
1319 BlockDriver *proto_drv;
1320 BlockDriver *drv = NULL;
1321 Error *local_err = NULL;
1322 int flags;
1323 uint64_t size;
1324 int ret;
1325
1326 if (!has_speed) {
1327 speed = 0;
1328 }
b952b558
PB
1329 if (!has_on_source_error) {
1330 on_source_error = BLOCKDEV_ON_ERROR_REPORT;
1331 }
1332 if (!has_on_target_error) {
1333 on_target_error = BLOCKDEV_ON_ERROR_REPORT;
1334 }
d9b902db
PB
1335 if (!has_mode) {
1336 mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS;
1337 }
eee13dfe
PB
1338 if (!has_granularity) {
1339 granularity = 0;
1340 }
08e4ed6c
PB
1341 if (!has_buf_size) {
1342 buf_size = DEFAULT_MIRROR_BUF_SIZE;
1343 }
1344
eee13dfe
PB
1345 if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) {
1346 error_set(errp, QERR_INVALID_PARAMETER, device);
1347 return;
1348 }
1349 if (granularity & (granularity - 1)) {
1350 error_set(errp, QERR_INVALID_PARAMETER, device);
1351 return;
1352 }
d9b902db
PB
1353
1354 bs = bdrv_find(device);
1355 if (!bs) {
1356 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
1357 return;
1358 }
1359
1360 if (!bdrv_is_inserted(bs)) {
1361 error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
1362 return;
1363 }
1364
1365 if (!has_format) {
1366 format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name;
1367 }
1368 if (format) {
1369 drv = bdrv_find_format(format);
1370 if (!drv) {
1371 error_set(errp, QERR_INVALID_BLOCK_FORMAT, format);
1372 return;
1373 }
1374 }
1375
1376 if (bdrv_in_use(bs)) {
1377 error_set(errp, QERR_DEVICE_IN_USE, device);
1378 return;
1379 }
1380
1381 flags = bs->open_flags | BDRV_O_RDWR;
1382 source = bs->backing_hd;
1383 if (!source && sync == MIRROR_SYNC_MODE_TOP) {
1384 sync = MIRROR_SYNC_MODE_FULL;
1385 }
1386
1387 proto_drv = bdrv_find_protocol(target);
1388 if (!proto_drv) {
1389 error_set(errp, QERR_INVALID_BLOCK_FORMAT, format);
1390 return;
1391 }
1392
86899072
VI
1393 bdrv_get_geometry(bs, &size);
1394 size *= 512;
d9b902db
PB
1395 if (sync == MIRROR_SYNC_MODE_FULL && mode != NEW_IMAGE_MODE_EXISTING) {
1396 /* create new image w/o backing file */
1397 assert(format && drv);
cf8f2426 1398 bdrv_img_create(target, format,
f382d43a 1399 NULL, NULL, NULL, size, flags, &local_err, false);
d9b902db
PB
1400 } else {
1401 switch (mode) {
1402 case NEW_IMAGE_MODE_EXISTING:
1403 ret = 0;
1404 break;
1405 case NEW_IMAGE_MODE_ABSOLUTE_PATHS:
1406 /* create new image with backing file */
cf8f2426
LC
1407 bdrv_img_create(target, format,
1408 source->filename,
1409 source->drv->format_name,
f382d43a 1410 NULL, size, flags, &local_err, false);
d9b902db
PB
1411 break;
1412 default:
1413 abort();
1414 }
1415 }
1416
cf8f2426
LC
1417 if (error_is_set(&local_err)) {
1418 error_propagate(errp, local_err);
d9b902db
PB
1419 return;
1420 }
1421
b812f671
PB
1422 /* Mirroring takes care of copy-on-write using the source's backing
1423 * file.
1424 */
d9b902db 1425 target_bs = bdrv_new("");
de9c0cec 1426 ret = bdrv_open(target_bs, target, NULL, flags | BDRV_O_NO_BACKING, drv);
d9b902db
PB
1427
1428 if (ret < 0) {
1429 bdrv_delete(target_bs);
1430 error_set(errp, QERR_OPEN_FILE_FAILED, target);
1431 return;
1432 }
1433
08e4ed6c 1434 mirror_start(bs, target_bs, speed, granularity, buf_size, sync,
eee13dfe 1435 on_source_error, on_target_error,
b952b558 1436 block_job_cb, bs, &local_err);
d9b902db
PB
1437 if (local_err != NULL) {
1438 bdrv_delete(target_bs);
1439 error_propagate(errp, local_err);
1440 return;
1441 }
1442
1443 /* Grab a reference so hotplug does not delete the BlockDriverState from
1444 * underneath us.
1445 */
1446 drive_get_ref(drive_get_by_blockdev(bs));
1447}
1448
2d47c6e9
SH
1449static BlockJob *find_block_job(const char *device)
1450{
1451 BlockDriverState *bs;
1452
1453 bs = bdrv_find(device);
1454 if (!bs || !bs->job) {
1455 return NULL;
1456 }
1457 return bs->job;
1458}
1459
882ec7ce 1460void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp)
2d47c6e9
SH
1461{
1462 BlockJob *job = find_block_job(device);
1463
1464 if (!job) {
7ef15070 1465 error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
2d47c6e9
SH
1466 return;
1467 }
1468
882ec7ce 1469 block_job_set_speed(job, speed, errp);
2d47c6e9 1470}
370521a1 1471
6e37fb81
PB
1472void qmp_block_job_cancel(const char *device,
1473 bool has_force, bool force, Error **errp)
370521a1
SH
1474{
1475 BlockJob *job = find_block_job(device);
1476
6e37fb81
PB
1477 if (!has_force) {
1478 force = false;
1479 }
1480
370521a1 1481 if (!job) {
7ef15070 1482 error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
370521a1
SH
1483 return;
1484 }
6e37fb81 1485 if (job->paused && !force) {
8acc72a4
PB
1486 error_set(errp, QERR_BLOCK_JOB_PAUSED, device);
1487 return;
1488 }
370521a1
SH
1489
1490 trace_qmp_block_job_cancel(job);
1491 block_job_cancel(job);
1492}
fb5458cd 1493
6e37fb81
PB
1494void qmp_block_job_pause(const char *device, Error **errp)
1495{
1496 BlockJob *job = find_block_job(device);
1497
1498 if (!job) {
1499 error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
1500 return;
1501 }
1502
1503 trace_qmp_block_job_pause(job);
1504 block_job_pause(job);
1505}
1506
1507void qmp_block_job_resume(const char *device, Error **errp)
1508{
1509 BlockJob *job = find_block_job(device);
1510
1511 if (!job) {
1512 error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
1513 return;
1514 }
1515
1516 trace_qmp_block_job_resume(job);
1517 block_job_resume(job);
1518}
1519
aeae883b
PB
1520void qmp_block_job_complete(const char *device, Error **errp)
1521{
1522 BlockJob *job = find_block_job(device);
1523
1524 if (!job) {
1525 error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
1526 return;
1527 }
1528
1529 trace_qmp_block_job_complete(job);
1530 block_job_complete(job, errp);
1531}
1532
fb5458cd
SH
1533static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs)
1534{
1535 BlockJobInfoList **prev = opaque;
1536 BlockJob *job = bs->job;
1537
1538 if (job) {
30e628b7
PB
1539 BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1);
1540 elem->value = block_job_query(bs->job);
fb5458cd
SH
1541 (*prev)->next = elem;
1542 *prev = elem;
1543 }
1544}
1545
1546BlockJobInfoList *qmp_query_block_jobs(Error **errp)
1547{
1548 /* Dummy is a fake list element for holding the head pointer */
1549 BlockJobInfoList dummy = {};
1550 BlockJobInfoList *prev = &dummy;
1551 bdrv_iterate(do_qmp_query_block_jobs_one, &prev);
1552 return dummy.next;
1553}
4d454574 1554
0006383e 1555QemuOptsList qemu_common_drive_opts = {
4d454574 1556 .name = "drive",
0006383e 1557 .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head),
4d454574
PB
1558 .desc = {
1559 {
1560 .name = "bus",
1561 .type = QEMU_OPT_NUMBER,
1562 .help = "bus number",
1563 },{
1564 .name = "unit",
1565 .type = QEMU_OPT_NUMBER,
1566 .help = "unit number (i.e. lun for scsi)",
1567 },{
1568 .name = "if",
1569 .type = QEMU_OPT_STRING,
1570 .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)",
1571 },{
1572 .name = "index",
1573 .type = QEMU_OPT_NUMBER,
1574 .help = "index number",
1575 },{
1576 .name = "cyls",
1577 .type = QEMU_OPT_NUMBER,
1578 .help = "number of cylinders (ide disk geometry)",
1579 },{
1580 .name = "heads",
1581 .type = QEMU_OPT_NUMBER,
1582 .help = "number of heads (ide disk geometry)",
1583 },{
1584 .name = "secs",
1585 .type = QEMU_OPT_NUMBER,
1586 .help = "number of sectors (ide disk geometry)",
1587 },{
1588 .name = "trans",
1589 .type = QEMU_OPT_STRING,
1590 .help = "chs translation (auto, lba. none)",
1591 },{
1592 .name = "media",
1593 .type = QEMU_OPT_STRING,
1594 .help = "media type (disk, cdrom)",
1595 },{
1596 .name = "snapshot",
1597 .type = QEMU_OPT_BOOL,
1598 .help = "enable/disable snapshot mode",
1599 },{
1600 .name = "file",
1601 .type = QEMU_OPT_STRING,
1602 .help = "disk image",
a9384aff
PB
1603 },{
1604 .name = "discard",
1605 .type = QEMU_OPT_STRING,
1606 .help = "discard operation (ignore/off, unmap/on)",
4d454574
PB
1607 },{
1608 .name = "cache",
1609 .type = QEMU_OPT_STRING,
1610 .help = "host cache usage (none, writeback, writethrough, "
1611 "directsync, unsafe)",
1612 },{
1613 .name = "aio",
1614 .type = QEMU_OPT_STRING,
1615 .help = "host AIO implementation (threads, native)",
1616 },{
1617 .name = "format",
1618 .type = QEMU_OPT_STRING,
1619 .help = "disk format (raw, qcow2, ...)",
1620 },{
1621 .name = "serial",
1622 .type = QEMU_OPT_STRING,
1623 .help = "disk serial number",
1624 },{
1625 .name = "rerror",
1626 .type = QEMU_OPT_STRING,
1627 .help = "read error action",
1628 },{
1629 .name = "werror",
1630 .type = QEMU_OPT_STRING,
1631 .help = "write error action",
1632 },{
1633 .name = "addr",
1634 .type = QEMU_OPT_STRING,
1635 .help = "pci address (virtio only)",
1636 },{
1637 .name = "readonly",
1638 .type = QEMU_OPT_BOOL,
1639 .help = "open drive file as read-only",
1640 },{
1641 .name = "iops",
1642 .type = QEMU_OPT_NUMBER,
1643 .help = "limit total I/O operations per second",
1644 },{
1645 .name = "iops_rd",
1646 .type = QEMU_OPT_NUMBER,
1647 .help = "limit read operations per second",
1648 },{
1649 .name = "iops_wr",
1650 .type = QEMU_OPT_NUMBER,
1651 .help = "limit write operations per second",
1652 },{
1653 .name = "bps",
1654 .type = QEMU_OPT_NUMBER,
1655 .help = "limit total bytes per second",
1656 },{
1657 .name = "bps_rd",
1658 .type = QEMU_OPT_NUMBER,
1659 .help = "limit read bytes per second",
1660 },{
1661 .name = "bps_wr",
1662 .type = QEMU_OPT_NUMBER,
1663 .help = "limit write bytes per second",
1664 },{
1665 .name = "copy-on-read",
1666 .type = QEMU_OPT_BOOL,
1667 .help = "copy read data from backing file into image file",
1668 },{
1669 .name = "boot",
1670 .type = QEMU_OPT_BOOL,
1671 .help = "(deprecated, ignored)",
1672 },
1673 { /* end of list */ }
1674 },
1675};
0006383e
KW
1676
1677QemuOptsList qemu_drive_opts = {
1678 .name = "drive",
1679 .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head),
1680 .desc = {
8ec7d390
KW
1681 {
1682 .name = "bus",
1683 .type = QEMU_OPT_NUMBER,
1684 .help = "bus number",
1685 },{
1686 .name = "unit",
1687 .type = QEMU_OPT_NUMBER,
1688 .help = "unit number (i.e. lun for scsi)",
1689 },{
1690 .name = "if",
1691 .type = QEMU_OPT_STRING,
1692 .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)",
1693 },{
1694 .name = "index",
1695 .type = QEMU_OPT_NUMBER,
1696 .help = "index number",
1697 },{
1698 .name = "cyls",
1699 .type = QEMU_OPT_NUMBER,
1700 .help = "number of cylinders (ide disk geometry)",
1701 },{
1702 .name = "heads",
1703 .type = QEMU_OPT_NUMBER,
1704 .help = "number of heads (ide disk geometry)",
1705 },{
1706 .name = "secs",
1707 .type = QEMU_OPT_NUMBER,
1708 .help = "number of sectors (ide disk geometry)",
1709 },{
1710 .name = "trans",
1711 .type = QEMU_OPT_STRING,
1712 .help = "chs translation (auto, lba. none)",
1713 },{
1714 .name = "media",
1715 .type = QEMU_OPT_STRING,
1716 .help = "media type (disk, cdrom)",
1717 },{
1718 .name = "snapshot",
1719 .type = QEMU_OPT_BOOL,
1720 .help = "enable/disable snapshot mode",
1721 },{
1722 .name = "file",
1723 .type = QEMU_OPT_STRING,
1724 .help = "disk image",
1725 },{
1726 .name = "discard",
1727 .type = QEMU_OPT_STRING,
1728 .help = "discard operation (ignore/off, unmap/on)",
1729 },{
1730 .name = "cache",
1731 .type = QEMU_OPT_STRING,
1732 .help = "host cache usage (none, writeback, writethrough, "
1733 "directsync, unsafe)",
1734 },{
1735 .name = "aio",
1736 .type = QEMU_OPT_STRING,
1737 .help = "host AIO implementation (threads, native)",
1738 },{
1739 .name = "format",
1740 .type = QEMU_OPT_STRING,
1741 .help = "disk format (raw, qcow2, ...)",
1742 },{
1743 .name = "serial",
1744 .type = QEMU_OPT_STRING,
1745 .help = "disk serial number",
1746 },{
1747 .name = "rerror",
1748 .type = QEMU_OPT_STRING,
1749 .help = "read error action",
1750 },{
1751 .name = "werror",
1752 .type = QEMU_OPT_STRING,
1753 .help = "write error action",
1754 },{
1755 .name = "addr",
1756 .type = QEMU_OPT_STRING,
1757 .help = "pci address (virtio only)",
1758 },{
1759 .name = "readonly",
1760 .type = QEMU_OPT_BOOL,
1761 .help = "open drive file as read-only",
1762 },{
1763 .name = "iops",
1764 .type = QEMU_OPT_NUMBER,
1765 .help = "limit total I/O operations per second",
1766 },{
1767 .name = "iops_rd",
1768 .type = QEMU_OPT_NUMBER,
1769 .help = "limit read operations per second",
1770 },{
1771 .name = "iops_wr",
1772 .type = QEMU_OPT_NUMBER,
1773 .help = "limit write operations per second",
1774 },{
1775 .name = "bps",
1776 .type = QEMU_OPT_NUMBER,
1777 .help = "limit total bytes per second",
1778 },{
1779 .name = "bps_rd",
1780 .type = QEMU_OPT_NUMBER,
1781 .help = "limit read bytes per second",
1782 },{
1783 .name = "bps_wr",
1784 .type = QEMU_OPT_NUMBER,
1785 .help = "limit write bytes per second",
1786 },{
1787 .name = "copy-on-read",
1788 .type = QEMU_OPT_BOOL,
1789 .help = "copy read data from backing file into image file",
1790 },{
1791 .name = "boot",
1792 .type = QEMU_OPT_BOOL,
1793 .help = "(deprecated, ignored)",
1794 },
0006383e
KW
1795 { /* end of list */ }
1796 },
1797};