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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. | |
8 | */ | |
9 | ||
10 | #include "block.h" | |
11 | #include "blockdev.h" | |
12 | #include "monitor.h" | |
13 | #include "qerror.h" | |
14 | #include "qemu-option.h" | |
15 | #include "qemu-config.h" | |
12bd451f | 16 | #include "qemu-objects.h" |
666daa68 | 17 | #include "sysemu.h" |
9063f814 | 18 | #include "block_int.h" |
a4dea8a9 | 19 | #include "qmp-commands.h" |
12bd451f | 20 | #include "trace.h" |
666daa68 | 21 | |
c9b62a7e | 22 | static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives); |
666daa68 | 23 | |
1960966d MA |
24 | static const char *const if_name[IF_COUNT] = { |
25 | [IF_NONE] = "none", | |
26 | [IF_IDE] = "ide", | |
27 | [IF_SCSI] = "scsi", | |
28 | [IF_FLOPPY] = "floppy", | |
29 | [IF_PFLASH] = "pflash", | |
30 | [IF_MTD] = "mtd", | |
31 | [IF_SD] = "sd", | |
32 | [IF_VIRTIO] = "virtio", | |
33 | [IF_XEN] = "xen", | |
34 | }; | |
35 | ||
36 | static const int if_max_devs[IF_COUNT] = { | |
27d6bf40 MA |
37 | /* |
38 | * Do not change these numbers! They govern how drive option | |
39 | * index maps to unit and bus. That mapping is ABI. | |
40 | * | |
41 | * All controllers used to imlement if=T drives need to support | |
42 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. | |
43 | * Otherwise, some index values map to "impossible" bus, unit | |
44 | * values. | |
45 | * | |
46 | * For instance, if you change [IF_SCSI] to 255, -drive | |
47 | * if=scsi,index=12 no longer means bus=1,unit=5, but | |
48 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), | |
49 | * the drive can't be set up. Regression. | |
50 | */ | |
51 | [IF_IDE] = 2, | |
52 | [IF_SCSI] = 7, | |
1960966d MA |
53 | }; |
54 | ||
14bafc54 MA |
55 | /* |
56 | * We automatically delete the drive when a device using it gets | |
57 | * unplugged. Questionable feature, but we can't just drop it. | |
58 | * Device models call blockdev_mark_auto_del() to schedule the | |
59 | * automatic deletion, and generic qdev code calls blockdev_auto_del() | |
60 | * when deletion is actually safe. | |
61 | */ | |
62 | void blockdev_mark_auto_del(BlockDriverState *bs) | |
63 | { | |
64 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
65 | ||
0fc0f1fa RH |
66 | if (dinfo) { |
67 | dinfo->auto_del = 1; | |
68 | } | |
14bafc54 MA |
69 | } |
70 | ||
71 | void blockdev_auto_del(BlockDriverState *bs) | |
72 | { | |
73 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
74 | ||
0fc0f1fa | 75 | if (dinfo && dinfo->auto_del) { |
84fb3925 | 76 | drive_put_ref(dinfo); |
14bafc54 MA |
77 | } |
78 | } | |
79 | ||
505a7fb1 MA |
80 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
81 | { | |
82 | int max_devs = if_max_devs[type]; | |
83 | return max_devs ? index / max_devs : 0; | |
84 | } | |
85 | ||
86 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) | |
87 | { | |
88 | int max_devs = if_max_devs[type]; | |
89 | return max_devs ? index % max_devs : index; | |
90 | } | |
91 | ||
2292ddae MA |
92 | QemuOpts *drive_def(const char *optstr) |
93 | { | |
94 | return qemu_opts_parse(qemu_find_opts("drive"), optstr, 0); | |
95 | } | |
96 | ||
97 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, | |
5645b0f4 | 98 | const char *optstr) |
666daa68 | 99 | { |
666daa68 | 100 | QemuOpts *opts; |
2292ddae | 101 | char buf[32]; |
666daa68 | 102 | |
2292ddae | 103 | opts = drive_def(optstr); |
666daa68 MA |
104 | if (!opts) { |
105 | return NULL; | |
106 | } | |
2292ddae MA |
107 | if (type != IF_DEFAULT) { |
108 | qemu_opt_set(opts, "if", if_name[type]); | |
109 | } | |
110 | if (index >= 0) { | |
111 | snprintf(buf, sizeof(buf), "%d", index); | |
112 | qemu_opt_set(opts, "index", buf); | |
113 | } | |
666daa68 MA |
114 | if (file) |
115 | qemu_opt_set(opts, "file", file); | |
116 | return opts; | |
117 | } | |
118 | ||
119 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) | |
120 | { | |
121 | DriveInfo *dinfo; | |
122 | ||
123 | /* seek interface, bus and unit */ | |
124 | ||
125 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
126 | if (dinfo->type == type && | |
127 | dinfo->bus == bus && | |
128 | dinfo->unit == unit) | |
129 | return dinfo; | |
130 | } | |
131 | ||
132 | return NULL; | |
133 | } | |
134 | ||
f1bd51ac MA |
135 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
136 | { | |
137 | return drive_get(type, | |
138 | drive_index_to_bus_id(type, index), | |
139 | drive_index_to_unit_id(type, index)); | |
140 | } | |
141 | ||
666daa68 MA |
142 | int drive_get_max_bus(BlockInterfaceType type) |
143 | { | |
144 | int max_bus; | |
145 | DriveInfo *dinfo; | |
146 | ||
147 | max_bus = -1; | |
148 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
149 | if(dinfo->type == type && | |
150 | dinfo->bus > max_bus) | |
151 | max_bus = dinfo->bus; | |
152 | } | |
153 | return max_bus; | |
154 | } | |
155 | ||
13839974 MA |
156 | /* Get a block device. This should only be used for single-drive devices |
157 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the | |
158 | appropriate bus. */ | |
159 | DriveInfo *drive_get_next(BlockInterfaceType type) | |
160 | { | |
161 | static int next_block_unit[IF_COUNT]; | |
162 | ||
163 | return drive_get(type, 0, next_block_unit[type]++); | |
164 | } | |
165 | ||
e4700e59 | 166 | DriveInfo *drive_get_by_blockdev(BlockDriverState *bs) |
666daa68 MA |
167 | { |
168 | DriveInfo *dinfo; | |
169 | ||
170 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
e4700e59 MA |
171 | if (dinfo->bdrv == bs) { |
172 | return dinfo; | |
173 | } | |
666daa68 | 174 | } |
e4700e59 | 175 | return NULL; |
666daa68 MA |
176 | } |
177 | ||
666daa68 MA |
178 | static void bdrv_format_print(void *opaque, const char *name) |
179 | { | |
807105a7 | 180 | error_printf(" %s", name); |
666daa68 MA |
181 | } |
182 | ||
84fb3925 | 183 | static void drive_uninit(DriveInfo *dinfo) |
666daa68 MA |
184 | { |
185 | qemu_opts_del(dinfo->opts); | |
186 | bdrv_delete(dinfo->bdrv); | |
7267c094 | 187 | g_free(dinfo->id); |
666daa68 | 188 | QTAILQ_REMOVE(&drives, dinfo, next); |
7267c094 | 189 | g_free(dinfo); |
666daa68 MA |
190 | } |
191 | ||
84fb3925 MT |
192 | void drive_put_ref(DriveInfo *dinfo) |
193 | { | |
194 | assert(dinfo->refcount); | |
195 | if (--dinfo->refcount == 0) { | |
196 | drive_uninit(dinfo); | |
197 | } | |
198 | } | |
199 | ||
200 | void drive_get_ref(DriveInfo *dinfo) | |
201 | { | |
202 | dinfo->refcount++; | |
203 | } | |
204 | ||
aa398a5c SH |
205 | typedef struct { |
206 | QEMUBH *bh; | |
207 | DriveInfo *dinfo; | |
208 | } DrivePutRefBH; | |
209 | ||
210 | static void drive_put_ref_bh(void *opaque) | |
211 | { | |
212 | DrivePutRefBH *s = opaque; | |
213 | ||
214 | drive_put_ref(s->dinfo); | |
215 | qemu_bh_delete(s->bh); | |
216 | g_free(s); | |
217 | } | |
218 | ||
219 | /* | |
220 | * Release a drive reference in a BH | |
221 | * | |
222 | * It is not possible to use drive_put_ref() from a callback function when the | |
223 | * callers still need the drive. In such cases we schedule a BH to release the | |
224 | * reference. | |
225 | */ | |
226 | static void drive_put_ref_bh_schedule(DriveInfo *dinfo) | |
227 | { | |
228 | DrivePutRefBH *s; | |
229 | ||
230 | s = g_new(DrivePutRefBH, 1); | |
231 | s->bh = qemu_bh_new(drive_put_ref_bh, s); | |
232 | s->dinfo = dinfo; | |
233 | qemu_bh_schedule(s->bh); | |
234 | } | |
235 | ||
666daa68 MA |
236 | static int parse_block_error_action(const char *buf, int is_read) |
237 | { | |
238 | if (!strcmp(buf, "ignore")) { | |
239 | return BLOCK_ERR_IGNORE; | |
240 | } else if (!is_read && !strcmp(buf, "enospc")) { | |
241 | return BLOCK_ERR_STOP_ENOSPC; | |
242 | } else if (!strcmp(buf, "stop")) { | |
243 | return BLOCK_ERR_STOP_ANY; | |
244 | } else if (!strcmp(buf, "report")) { | |
245 | return BLOCK_ERR_REPORT; | |
246 | } else { | |
807105a7 MA |
247 | error_report("'%s' invalid %s error action", |
248 | buf, is_read ? "read" : "write"); | |
666daa68 MA |
249 | return -1; |
250 | } | |
251 | } | |
252 | ||
0563e191 ZYW |
253 | static bool do_check_io_limits(BlockIOLimit *io_limits) |
254 | { | |
255 | bool bps_flag; | |
256 | bool iops_flag; | |
257 | ||
258 | assert(io_limits); | |
259 | ||
260 | bps_flag = (io_limits->bps[BLOCK_IO_LIMIT_TOTAL] != 0) | |
261 | && ((io_limits->bps[BLOCK_IO_LIMIT_READ] != 0) | |
262 | || (io_limits->bps[BLOCK_IO_LIMIT_WRITE] != 0)); | |
263 | iops_flag = (io_limits->iops[BLOCK_IO_LIMIT_TOTAL] != 0) | |
264 | && ((io_limits->iops[BLOCK_IO_LIMIT_READ] != 0) | |
265 | || (io_limits->iops[BLOCK_IO_LIMIT_WRITE] != 0)); | |
266 | if (bps_flag || iops_flag) { | |
267 | return false; | |
268 | } | |
269 | ||
270 | return true; | |
271 | } | |
272 | ||
319ae529 | 273 | DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi) |
666daa68 MA |
274 | { |
275 | const char *buf; | |
276 | const char *file = NULL; | |
277 | char devname[128]; | |
278 | const char *serial; | |
279 | const char *mediastr = ""; | |
280 | BlockInterfaceType type; | |
281 | enum { MEDIA_DISK, MEDIA_CDROM } media; | |
282 | int bus_id, unit_id; | |
283 | int cyls, heads, secs, translation; | |
284 | BlockDriver *drv = NULL; | |
285 | int max_devs; | |
286 | int index; | |
287 | int ro = 0; | |
288 | int bdrv_flags = 0; | |
289 | int on_read_error, on_write_error; | |
290 | const char *devaddr; | |
291 | DriveInfo *dinfo; | |
0563e191 | 292 | BlockIOLimit io_limits; |
666daa68 | 293 | int snapshot = 0; |
fb0490f6 | 294 | bool copy_on_read; |
666daa68 MA |
295 | int ret; |
296 | ||
666daa68 | 297 | translation = BIOS_ATA_TRANSLATION_AUTO; |
666daa68 MA |
298 | media = MEDIA_DISK; |
299 | ||
300 | /* extract parameters */ | |
301 | bus_id = qemu_opt_get_number(opts, "bus", 0); | |
302 | unit_id = qemu_opt_get_number(opts, "unit", -1); | |
303 | index = qemu_opt_get_number(opts, "index", -1); | |
304 | ||
305 | cyls = qemu_opt_get_number(opts, "cyls", 0); | |
306 | heads = qemu_opt_get_number(opts, "heads", 0); | |
307 | secs = qemu_opt_get_number(opts, "secs", 0); | |
308 | ||
309 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); | |
310 | ro = qemu_opt_get_bool(opts, "readonly", 0); | |
fb0490f6 | 311 | copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false); |
666daa68 MA |
312 | |
313 | file = qemu_opt_get(opts, "file"); | |
314 | serial = qemu_opt_get(opts, "serial"); | |
315 | ||
316 | if ((buf = qemu_opt_get(opts, "if")) != NULL) { | |
317 | pstrcpy(devname, sizeof(devname), buf); | |
1960966d MA |
318 | for (type = 0; type < IF_COUNT && strcmp(buf, if_name[type]); type++) |
319 | ; | |
320 | if (type == IF_COUNT) { | |
807105a7 | 321 | error_report("unsupported bus type '%s'", buf); |
666daa68 MA |
322 | return NULL; |
323 | } | |
2d3999fe LC |
324 | } else { |
325 | type = default_to_scsi ? IF_SCSI : IF_IDE; | |
326 | pstrcpy(devname, sizeof(devname), if_name[type]); | |
666daa68 | 327 | } |
2d3999fe | 328 | |
1960966d | 329 | max_devs = if_max_devs[type]; |
666daa68 MA |
330 | |
331 | if (cyls || heads || secs) { | |
332 | if (cyls < 1 || (type == IF_IDE && cyls > 16383)) { | |
807105a7 | 333 | error_report("invalid physical cyls number"); |
666daa68 MA |
334 | return NULL; |
335 | } | |
336 | if (heads < 1 || (type == IF_IDE && heads > 16)) { | |
807105a7 | 337 | error_report("invalid physical heads number"); |
666daa68 MA |
338 | return NULL; |
339 | } | |
340 | if (secs < 1 || (type == IF_IDE && secs > 63)) { | |
807105a7 | 341 | error_report("invalid physical secs number"); |
666daa68 MA |
342 | return NULL; |
343 | } | |
344 | } | |
345 | ||
346 | if ((buf = qemu_opt_get(opts, "trans")) != NULL) { | |
347 | if (!cyls) { | |
e4080f9b | 348 | error_report("'%s' trans must be used with cyls, heads and secs", |
807105a7 | 349 | buf); |
666daa68 MA |
350 | return NULL; |
351 | } | |
352 | if (!strcmp(buf, "none")) | |
353 | translation = BIOS_ATA_TRANSLATION_NONE; | |
354 | else if (!strcmp(buf, "lba")) | |
355 | translation = BIOS_ATA_TRANSLATION_LBA; | |
356 | else if (!strcmp(buf, "auto")) | |
357 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
358 | else { | |
807105a7 | 359 | error_report("'%s' invalid translation type", buf); |
666daa68 MA |
360 | return NULL; |
361 | } | |
362 | } | |
363 | ||
364 | if ((buf = qemu_opt_get(opts, "media")) != NULL) { | |
365 | if (!strcmp(buf, "disk")) { | |
366 | media = MEDIA_DISK; | |
367 | } else if (!strcmp(buf, "cdrom")) { | |
368 | if (cyls || secs || heads) { | |
e7ff8f0e | 369 | error_report("CHS can't be set with media=%s", buf); |
666daa68 MA |
370 | return NULL; |
371 | } | |
372 | media = MEDIA_CDROM; | |
373 | } else { | |
807105a7 | 374 | error_report("'%s' invalid media", buf); |
666daa68 MA |
375 | return NULL; |
376 | } | |
377 | } | |
378 | ||
379 | if ((buf = qemu_opt_get(opts, "cache")) != NULL) { | |
c3993cdc SH |
380 | if (bdrv_parse_cache_flags(buf, &bdrv_flags) != 0) { |
381 | error_report("invalid cache option"); | |
382 | return NULL; | |
666daa68 MA |
383 | } |
384 | } | |
385 | ||
386 | #ifdef CONFIG_LINUX_AIO | |
387 | if ((buf = qemu_opt_get(opts, "aio")) != NULL) { | |
388 | if (!strcmp(buf, "native")) { | |
389 | bdrv_flags |= BDRV_O_NATIVE_AIO; | |
390 | } else if (!strcmp(buf, "threads")) { | |
391 | /* this is the default */ | |
392 | } else { | |
807105a7 | 393 | error_report("invalid aio option"); |
666daa68 MA |
394 | return NULL; |
395 | } | |
396 | } | |
397 | #endif | |
398 | ||
399 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
400 | if (strcmp(buf, "?") == 0) { | |
807105a7 MA |
401 | error_printf("Supported formats:"); |
402 | bdrv_iterate_format(bdrv_format_print, NULL); | |
403 | error_printf("\n"); | |
404 | return NULL; | |
666daa68 MA |
405 | } |
406 | drv = bdrv_find_whitelisted_format(buf); | |
407 | if (!drv) { | |
807105a7 | 408 | error_report("'%s' invalid format", buf); |
666daa68 MA |
409 | return NULL; |
410 | } | |
411 | } | |
412 | ||
0563e191 ZYW |
413 | /* disk I/O throttling */ |
414 | io_limits.bps[BLOCK_IO_LIMIT_TOTAL] = | |
415 | qemu_opt_get_number(opts, "bps", 0); | |
416 | io_limits.bps[BLOCK_IO_LIMIT_READ] = | |
417 | qemu_opt_get_number(opts, "bps_rd", 0); | |
418 | io_limits.bps[BLOCK_IO_LIMIT_WRITE] = | |
419 | qemu_opt_get_number(opts, "bps_wr", 0); | |
420 | io_limits.iops[BLOCK_IO_LIMIT_TOTAL] = | |
421 | qemu_opt_get_number(opts, "iops", 0); | |
422 | io_limits.iops[BLOCK_IO_LIMIT_READ] = | |
423 | qemu_opt_get_number(opts, "iops_rd", 0); | |
424 | io_limits.iops[BLOCK_IO_LIMIT_WRITE] = | |
425 | qemu_opt_get_number(opts, "iops_wr", 0); | |
426 | ||
427 | if (!do_check_io_limits(&io_limits)) { | |
428 | error_report("bps(iops) and bps_rd/bps_wr(iops_rd/iops_wr) " | |
429 | "cannot be used at the same time"); | |
430 | return NULL; | |
431 | } | |
432 | ||
666daa68 MA |
433 | on_write_error = BLOCK_ERR_STOP_ENOSPC; |
434 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { | |
435 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) { | |
807105a7 | 436 | error_report("werror is not supported by this bus type"); |
666daa68 MA |
437 | return NULL; |
438 | } | |
439 | ||
440 | on_write_error = parse_block_error_action(buf, 0); | |
441 | if (on_write_error < 0) { | |
442 | return NULL; | |
443 | } | |
444 | } | |
445 | ||
446 | on_read_error = BLOCK_ERR_REPORT; | |
447 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { | |
5dba48a8 | 448 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) { |
807105a7 | 449 | error_report("rerror is not supported by this bus type"); |
666daa68 MA |
450 | return NULL; |
451 | } | |
452 | ||
453 | on_read_error = parse_block_error_action(buf, 1); | |
454 | if (on_read_error < 0) { | |
455 | return NULL; | |
456 | } | |
457 | } | |
458 | ||
459 | if ((devaddr = qemu_opt_get(opts, "addr")) != NULL) { | |
460 | if (type != IF_VIRTIO) { | |
807105a7 | 461 | error_report("addr is not supported by this bus type"); |
666daa68 MA |
462 | return NULL; |
463 | } | |
464 | } | |
465 | ||
466 | /* compute bus and unit according index */ | |
467 | ||
468 | if (index != -1) { | |
469 | if (bus_id != 0 || unit_id != -1) { | |
807105a7 | 470 | error_report("index cannot be used with bus and unit"); |
666daa68 MA |
471 | return NULL; |
472 | } | |
505a7fb1 MA |
473 | bus_id = drive_index_to_bus_id(type, index); |
474 | unit_id = drive_index_to_unit_id(type, index); | |
666daa68 MA |
475 | } |
476 | ||
477 | /* if user doesn't specify a unit_id, | |
478 | * try to find the first free | |
479 | */ | |
480 | ||
481 | if (unit_id == -1) { | |
482 | unit_id = 0; | |
483 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
484 | unit_id++; | |
485 | if (max_devs && unit_id >= max_devs) { | |
486 | unit_id -= max_devs; | |
487 | bus_id++; | |
488 | } | |
489 | } | |
490 | } | |
491 | ||
492 | /* check unit id */ | |
493 | ||
494 | if (max_devs && unit_id >= max_devs) { | |
807105a7 MA |
495 | error_report("unit %d too big (max is %d)", |
496 | unit_id, max_devs - 1); | |
666daa68 MA |
497 | return NULL; |
498 | } | |
499 | ||
500 | /* | |
4e5d9b57 | 501 | * catch multiple definitions |
666daa68 MA |
502 | */ |
503 | ||
504 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
4e5d9b57 MA |
505 | error_report("drive with bus=%d, unit=%d (index=%d) exists", |
506 | bus_id, unit_id, index); | |
666daa68 MA |
507 | return NULL; |
508 | } | |
509 | ||
510 | /* init */ | |
511 | ||
7267c094 | 512 | dinfo = g_malloc0(sizeof(*dinfo)); |
666daa68 | 513 | if ((buf = qemu_opts_id(opts)) != NULL) { |
7267c094 | 514 | dinfo->id = g_strdup(buf); |
666daa68 MA |
515 | } else { |
516 | /* no id supplied -> create one */ | |
7267c094 | 517 | dinfo->id = g_malloc0(32); |
666daa68 MA |
518 | if (type == IF_IDE || type == IF_SCSI) |
519 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
520 | if (max_devs) | |
521 | snprintf(dinfo->id, 32, "%s%i%s%i", | |
522 | devname, bus_id, mediastr, unit_id); | |
523 | else | |
524 | snprintf(dinfo->id, 32, "%s%s%i", | |
525 | devname, mediastr, unit_id); | |
526 | } | |
527 | dinfo->bdrv = bdrv_new(dinfo->id); | |
528 | dinfo->devaddr = devaddr; | |
529 | dinfo->type = type; | |
530 | dinfo->bus = bus_id; | |
531 | dinfo->unit = unit_id; | |
666daa68 | 532 | dinfo->opts = opts; |
84fb3925 | 533 | dinfo->refcount = 1; |
666daa68 | 534 | if (serial) |
653dbec7 | 535 | strncpy(dinfo->serial, serial, sizeof(dinfo->serial) - 1); |
666daa68 MA |
536 | QTAILQ_INSERT_TAIL(&drives, dinfo, next); |
537 | ||
abd7f68d MA |
538 | bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error); |
539 | ||
0563e191 ZYW |
540 | /* disk I/O throttling */ |
541 | bdrv_set_io_limits(dinfo->bdrv, &io_limits); | |
542 | ||
666daa68 MA |
543 | switch(type) { |
544 | case IF_IDE: | |
545 | case IF_SCSI: | |
546 | case IF_XEN: | |
547 | case IF_NONE: | |
548 | switch(media) { | |
549 | case MEDIA_DISK: | |
550 | if (cyls != 0) { | |
551 | bdrv_set_geometry_hint(dinfo->bdrv, cyls, heads, secs); | |
552 | bdrv_set_translation_hint(dinfo->bdrv, translation); | |
553 | } | |
554 | break; | |
555 | case MEDIA_CDROM: | |
95b5edcd | 556 | dinfo->media_cd = 1; |
666daa68 MA |
557 | break; |
558 | } | |
559 | break; | |
560 | case IF_SD: | |
666daa68 | 561 | case IF_FLOPPY: |
666daa68 MA |
562 | case IF_PFLASH: |
563 | case IF_MTD: | |
564 | break; | |
565 | case IF_VIRTIO: | |
566 | /* add virtio block device */ | |
3329f07b | 567 | opts = qemu_opts_create(qemu_find_opts("device"), NULL, 0); |
29f82b37 | 568 | qemu_opt_set(opts, "driver", "virtio-blk"); |
666daa68 MA |
569 | qemu_opt_set(opts, "drive", dinfo->id); |
570 | if (devaddr) | |
571 | qemu_opt_set(opts, "addr", devaddr); | |
572 | break; | |
2292ddae | 573 | default: |
666daa68 MA |
574 | abort(); |
575 | } | |
dd5b0d71 | 576 | if (!file || !*file) { |
319ae529 | 577 | return dinfo; |
666daa68 MA |
578 | } |
579 | if (snapshot) { | |
580 | /* always use cache=unsafe with snapshot */ | |
581 | bdrv_flags &= ~BDRV_O_CACHE_MASK; | |
582 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); | |
583 | } | |
584 | ||
fb0490f6 SH |
585 | if (copy_on_read) { |
586 | bdrv_flags |= BDRV_O_COPY_ON_READ; | |
587 | } | |
588 | ||
666daa68 MA |
589 | if (media == MEDIA_CDROM) { |
590 | /* CDROM is fine for any interface, don't check. */ | |
591 | ro = 1; | |
592 | } else if (ro == 1) { | |
593 | if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY && type != IF_NONE) { | |
807105a7 | 594 | error_report("readonly not supported by this bus type"); |
a9ae2bff | 595 | goto err; |
666daa68 MA |
596 | } |
597 | } | |
598 | ||
599 | bdrv_flags |= ro ? 0 : BDRV_O_RDWR; | |
600 | ||
601 | ret = bdrv_open(dinfo->bdrv, file, bdrv_flags, drv); | |
602 | if (ret < 0) { | |
807105a7 MA |
603 | error_report("could not open disk image %s: %s", |
604 | file, strerror(-ret)); | |
a9ae2bff | 605 | goto err; |
666daa68 MA |
606 | } |
607 | ||
608 | if (bdrv_key_required(dinfo->bdrv)) | |
609 | autostart = 0; | |
666daa68 | 610 | return dinfo; |
a9ae2bff MA |
611 | |
612 | err: | |
613 | bdrv_delete(dinfo->bdrv); | |
7267c094 | 614 | g_free(dinfo->id); |
a9ae2bff | 615 | QTAILQ_REMOVE(&drives, dinfo, next); |
7267c094 | 616 | g_free(dinfo); |
a9ae2bff | 617 | return NULL; |
666daa68 MA |
618 | } |
619 | ||
620 | void do_commit(Monitor *mon, const QDict *qdict) | |
621 | { | |
666daa68 | 622 | const char *device = qdict_get_str(qdict, "device"); |
6ab4b5ab | 623 | BlockDriverState *bs; |
666daa68 | 624 | |
6ab4b5ab MA |
625 | if (!strcmp(device, "all")) { |
626 | bdrv_commit_all(); | |
627 | } else { | |
2d3735d3 SH |
628 | int ret; |
629 | ||
6ab4b5ab | 630 | bs = bdrv_find(device); |
ac59eb95 MA |
631 | if (!bs) { |
632 | qerror_report(QERR_DEVICE_NOT_FOUND, device); | |
633 | return; | |
6ab4b5ab | 634 | } |
2d3735d3 SH |
635 | ret = bdrv_commit(bs); |
636 | if (ret == -EBUSY) { | |
637 | qerror_report(QERR_DEVICE_IN_USE, device); | |
638 | return; | |
639 | } | |
666daa68 MA |
640 | } |
641 | } | |
642 | ||
6106e249 LC |
643 | void qmp_blockdev_snapshot_sync(const char *device, const char *snapshot_file, |
644 | bool has_format, const char *format, | |
645 | Error **errp) | |
f8882568 | 646 | { |
f8882568 | 647 | BlockDriverState *bs; |
52f9a172 | 648 | BlockDriver *drv, *old_drv, *proto_drv; |
f8882568 JS |
649 | int ret = 0; |
650 | int flags; | |
52f9a172 | 651 | char old_filename[1024]; |
f8882568 JS |
652 | |
653 | bs = bdrv_find(device); | |
654 | if (!bs) { | |
6106e249 LC |
655 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
656 | return; | |
f8882568 | 657 | } |
2d3735d3 SH |
658 | if (bdrv_in_use(bs)) { |
659 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
660 | return; | |
661 | } | |
f8882568 | 662 | |
52f9a172 JS |
663 | pstrcpy(old_filename, sizeof(old_filename), bs->filename); |
664 | ||
665 | old_drv = bs->drv; | |
666 | flags = bs->open_flags; | |
667 | ||
6106e249 | 668 | if (!has_format) { |
f8882568 JS |
669 | format = "qcow2"; |
670 | } | |
671 | ||
672 | drv = bdrv_find_format(format); | |
673 | if (!drv) { | |
6106e249 LC |
674 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
675 | return; | |
f8882568 JS |
676 | } |
677 | ||
6106e249 | 678 | proto_drv = bdrv_find_protocol(snapshot_file); |
f8882568 | 679 | if (!proto_drv) { |
6106e249 LC |
680 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
681 | return; | |
f8882568 JS |
682 | } |
683 | ||
6106e249 | 684 | ret = bdrv_img_create(snapshot_file, format, bs->filename, |
52f9a172 | 685 | bs->drv->format_name, NULL, -1, flags); |
f8882568 | 686 | if (ret) { |
6106e249 LC |
687 | error_set(errp, QERR_UNDEFINED_ERROR); |
688 | return; | |
f8882568 JS |
689 | } |
690 | ||
922453bc | 691 | bdrv_drain_all(); |
f8882568 JS |
692 | bdrv_flush(bs); |
693 | ||
f8882568 | 694 | bdrv_close(bs); |
6106e249 | 695 | ret = bdrv_open(bs, snapshot_file, flags, drv); |
f8882568 | 696 | /* |
52f9a172 JS |
697 | * If reopening the image file we just created fails, fall back |
698 | * and try to re-open the original image. If that fails too, we | |
699 | * are in serious trouble. | |
f8882568 JS |
700 | */ |
701 | if (ret != 0) { | |
52f9a172 JS |
702 | ret = bdrv_open(bs, old_filename, flags, old_drv); |
703 | if (ret != 0) { | |
6106e249 | 704 | error_set(errp, QERR_OPEN_FILE_FAILED, old_filename); |
52f9a172 | 705 | } else { |
6106e249 | 706 | error_set(errp, QERR_OPEN_FILE_FAILED, snapshot_file); |
52f9a172 | 707 | } |
f8882568 | 708 | } |
f8882568 JS |
709 | } |
710 | ||
92d48558 | 711 | static void eject_device(BlockDriverState *bs, int force, Error **errp) |
666daa68 | 712 | { |
2d3735d3 SH |
713 | if (bdrv_in_use(bs)) { |
714 | error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs)); | |
715 | return; | |
716 | } | |
2c6942fa | 717 | if (!bdrv_dev_has_removable_media(bs)) { |
92d48558 LC |
718 | error_set(errp, QERR_DEVICE_NOT_REMOVABLE, bdrv_get_device_name(bs)); |
719 | return; | |
ea8f942f | 720 | } |
92d48558 | 721 | |
025ccaa7 PB |
722 | if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) { |
723 | bdrv_dev_eject_request(bs, force); | |
724 | if (!force) { | |
92d48558 LC |
725 | error_set(errp, QERR_DEVICE_LOCKED, bdrv_get_device_name(bs)); |
726 | return; | |
025ccaa7 | 727 | } |
666daa68 | 728 | } |
92d48558 | 729 | |
3b5276b5 | 730 | bdrv_close(bs); |
666daa68 MA |
731 | } |
732 | ||
c245b6a3 | 733 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
666daa68 MA |
734 | { |
735 | BlockDriverState *bs; | |
666daa68 | 736 | |
c245b6a3 | 737 | bs = bdrv_find(device); |
666daa68 | 738 | if (!bs) { |
c245b6a3 LC |
739 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
740 | return; | |
92d48558 LC |
741 | } |
742 | ||
c245b6a3 | 743 | eject_device(bs, force, errp); |
666daa68 MA |
744 | } |
745 | ||
a4dea8a9 | 746 | void qmp_block_passwd(const char *device, const char *password, Error **errp) |
666daa68 MA |
747 | { |
748 | BlockDriverState *bs; | |
749 | int err; | |
750 | ||
a4dea8a9 | 751 | bs = bdrv_find(device); |
666daa68 | 752 | if (!bs) { |
a4dea8a9 LC |
753 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
754 | return; | |
666daa68 MA |
755 | } |
756 | ||
a4dea8a9 | 757 | err = bdrv_set_key(bs, password); |
666daa68 | 758 | if (err == -EINVAL) { |
a4dea8a9 LC |
759 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
760 | return; | |
666daa68 | 761 | } else if (err < 0) { |
a4dea8a9 LC |
762 | error_set(errp, QERR_INVALID_PASSWORD); |
763 | return; | |
666daa68 | 764 | } |
666daa68 MA |
765 | } |
766 | ||
333a96ec LC |
767 | static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename, |
768 | int bdrv_flags, BlockDriver *drv, | |
769 | const char *password, Error **errp) | |
770 | { | |
771 | if (bdrv_open(bs, filename, bdrv_flags, drv) < 0) { | |
772 | error_set(errp, QERR_OPEN_FILE_FAILED, filename); | |
773 | return; | |
774 | } | |
775 | ||
776 | if (bdrv_key_required(bs)) { | |
777 | if (password) { | |
778 | if (bdrv_set_key(bs, password) < 0) { | |
779 | error_set(errp, QERR_INVALID_PASSWORD); | |
780 | } | |
781 | } else { | |
782 | error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs), | |
783 | bdrv_get_encrypted_filename(bs)); | |
784 | } | |
785 | } else if (password) { | |
786 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); | |
787 | } | |
788 | } | |
789 | ||
790 | void qmp_change_blockdev(const char *device, const char *filename, | |
791 | bool has_format, const char *format, Error **errp) | |
666daa68 MA |
792 | { |
793 | BlockDriverState *bs; | |
794 | BlockDriver *drv = NULL; | |
795 | int bdrv_flags; | |
92d48558 | 796 | Error *err = NULL; |
666daa68 MA |
797 | |
798 | bs = bdrv_find(device); | |
799 | if (!bs) { | |
333a96ec LC |
800 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
801 | return; | |
666daa68 | 802 | } |
333a96ec LC |
803 | |
804 | if (format) { | |
805 | drv = bdrv_find_whitelisted_format(format); | |
666daa68 | 806 | if (!drv) { |
333a96ec LC |
807 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
808 | return; | |
666daa68 MA |
809 | } |
810 | } | |
333a96ec | 811 | |
92d48558 LC |
812 | eject_device(bs, 0, &err); |
813 | if (error_is_set(&err)) { | |
333a96ec LC |
814 | error_propagate(errp, err); |
815 | return; | |
666daa68 | 816 | } |
333a96ec | 817 | |
528f7663 | 818 | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR; |
199630b6 | 819 | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0; |
333a96ec LC |
820 | |
821 | qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp); | |
666daa68 | 822 | } |
9063f814 | 823 | |
727f005e | 824 | /* throttling disk I/O limits */ |
80047da5 LC |
825 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
826 | int64_t bps_wr, int64_t iops, int64_t iops_rd, | |
827 | int64_t iops_wr, Error **errp) | |
727f005e ZYW |
828 | { |
829 | BlockIOLimit io_limits; | |
727f005e ZYW |
830 | BlockDriverState *bs; |
831 | ||
80047da5 | 832 | bs = bdrv_find(device); |
727f005e | 833 | if (!bs) { |
80047da5 LC |
834 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
835 | return; | |
727f005e ZYW |
836 | } |
837 | ||
80047da5 LC |
838 | io_limits.bps[BLOCK_IO_LIMIT_TOTAL] = bps; |
839 | io_limits.bps[BLOCK_IO_LIMIT_READ] = bps_rd; | |
840 | io_limits.bps[BLOCK_IO_LIMIT_WRITE] = bps_wr; | |
841 | io_limits.iops[BLOCK_IO_LIMIT_TOTAL]= iops; | |
842 | io_limits.iops[BLOCK_IO_LIMIT_READ] = iops_rd; | |
843 | io_limits.iops[BLOCK_IO_LIMIT_WRITE]= iops_wr; | |
727f005e ZYW |
844 | |
845 | if (!do_check_io_limits(&io_limits)) { | |
80047da5 LC |
846 | error_set(errp, QERR_INVALID_PARAMETER_COMBINATION); |
847 | return; | |
727f005e ZYW |
848 | } |
849 | ||
850 | bs->io_limits = io_limits; | |
851 | bs->slice_time = BLOCK_IO_SLICE_TIME; | |
852 | ||
853 | if (!bs->io_limits_enabled && bdrv_io_limits_enabled(bs)) { | |
854 | bdrv_io_limits_enable(bs); | |
855 | } else if (bs->io_limits_enabled && !bdrv_io_limits_enabled(bs)) { | |
856 | bdrv_io_limits_disable(bs); | |
857 | } else { | |
858 | if (bs->block_timer) { | |
859 | qemu_mod_timer(bs->block_timer, qemu_get_clock_ns(vm_clock)); | |
860 | } | |
861 | } | |
727f005e ZYW |
862 | } |
863 | ||
9063f814 RH |
864 | int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
865 | { | |
866 | const char *id = qdict_get_str(qdict, "id"); | |
867 | BlockDriverState *bs; | |
9063f814 RH |
868 | |
869 | bs = bdrv_find(id); | |
870 | if (!bs) { | |
871 | qerror_report(QERR_DEVICE_NOT_FOUND, id); | |
872 | return -1; | |
873 | } | |
8591675f MT |
874 | if (bdrv_in_use(bs)) { |
875 | qerror_report(QERR_DEVICE_IN_USE, id); | |
876 | return -1; | |
877 | } | |
9063f814 RH |
878 | |
879 | /* quiesce block driver; prevent further io */ | |
922453bc | 880 | bdrv_drain_all(); |
9063f814 RH |
881 | bdrv_flush(bs); |
882 | bdrv_close(bs); | |
883 | ||
fa879d62 | 884 | /* if we have a device attached to this BlockDriverState |
d22b2f41 RH |
885 | * then we need to make the drive anonymous until the device |
886 | * can be removed. If this is a drive with no device backing | |
887 | * then we can just get rid of the block driver state right here. | |
888 | */ | |
fa879d62 | 889 | if (bdrv_get_attached_dev(bs)) { |
d22b2f41 RH |
890 | bdrv_make_anon(bs); |
891 | } else { | |
892 | drive_uninit(drive_get_by_blockdev(bs)); | |
9063f814 RH |
893 | } |
894 | ||
9063f814 RH |
895 | return 0; |
896 | } | |
6d4a2b3a | 897 | |
5e7caacb | 898 | void qmp_block_resize(const char *device, int64_t size, Error **errp) |
6d4a2b3a | 899 | { |
6d4a2b3a CH |
900 | BlockDriverState *bs; |
901 | ||
902 | bs = bdrv_find(device); | |
903 | if (!bs) { | |
5e7caacb LC |
904 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
905 | return; | |
6d4a2b3a CH |
906 | } |
907 | ||
908 | if (size < 0) { | |
939a1cc3 | 909 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
5e7caacb | 910 | return; |
6d4a2b3a CH |
911 | } |
912 | ||
939a1cc3 SH |
913 | switch (bdrv_truncate(bs, size)) { |
914 | case 0: | |
915 | break; | |
916 | case -ENOMEDIUM: | |
917 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
918 | break; | |
919 | case -ENOTSUP: | |
920 | error_set(errp, QERR_UNSUPPORTED); | |
921 | break; | |
922 | case -EACCES: | |
923 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
924 | break; | |
925 | case -EBUSY: | |
926 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
927 | break; | |
928 | default: | |
5e7caacb | 929 | error_set(errp, QERR_UNDEFINED_ERROR); |
939a1cc3 | 930 | break; |
6d4a2b3a | 931 | } |
6d4a2b3a | 932 | } |
12bd451f SH |
933 | |
934 | static QObject *qobject_from_block_job(BlockJob *job) | |
935 | { | |
936 | return qobject_from_jsonf("{ 'type': %s," | |
937 | "'device': %s," | |
938 | "'len': %" PRId64 "," | |
939 | "'offset': %" PRId64 "," | |
940 | "'speed': %" PRId64 " }", | |
941 | job->job_type->job_type, | |
942 | bdrv_get_device_name(job->bs), | |
943 | job->len, | |
944 | job->offset, | |
945 | job->speed); | |
946 | } | |
947 | ||
948 | static void block_stream_cb(void *opaque, int ret) | |
949 | { | |
950 | BlockDriverState *bs = opaque; | |
951 | QObject *obj; | |
952 | ||
953 | trace_block_stream_cb(bs, bs->job, ret); | |
954 | ||
955 | assert(bs->job); | |
956 | obj = qobject_from_block_job(bs->job); | |
957 | if (ret < 0) { | |
958 | QDict *dict = qobject_to_qdict(obj); | |
959 | qdict_put(dict, "error", qstring_from_str(strerror(-ret))); | |
960 | } | |
961 | ||
370521a1 SH |
962 | if (block_job_is_cancelled(bs->job)) { |
963 | monitor_protocol_event(QEVENT_BLOCK_JOB_CANCELLED, obj); | |
964 | } else { | |
965 | monitor_protocol_event(QEVENT_BLOCK_JOB_COMPLETED, obj); | |
966 | } | |
12bd451f | 967 | qobject_decref(obj); |
aa398a5c SH |
968 | |
969 | drive_put_ref_bh_schedule(drive_get_by_blockdev(bs)); | |
12bd451f SH |
970 | } |
971 | ||
972 | void qmp_block_stream(const char *device, bool has_base, | |
973 | const char *base, Error **errp) | |
974 | { | |
975 | BlockDriverState *bs; | |
c8c3080f | 976 | BlockDriverState *base_bs = NULL; |
12bd451f SH |
977 | int ret; |
978 | ||
979 | bs = bdrv_find(device); | |
980 | if (!bs) { | |
981 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
982 | return; | |
983 | } | |
984 | ||
12bd451f | 985 | if (base) { |
c8c3080f MT |
986 | base_bs = bdrv_find_backing_image(bs, base); |
987 | if (base_bs == NULL) { | |
988 | error_set(errp, QERR_BASE_NOT_FOUND, base); | |
989 | return; | |
990 | } | |
12bd451f SH |
991 | } |
992 | ||
c8c3080f | 993 | ret = stream_start(bs, base_bs, base, block_stream_cb, bs); |
12bd451f SH |
994 | if (ret < 0) { |
995 | switch (ret) { | |
996 | case -EBUSY: | |
997 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
998 | return; | |
999 | default: | |
1000 | error_set(errp, QERR_NOT_SUPPORTED); | |
1001 | return; | |
1002 | } | |
1003 | } | |
1004 | ||
aa398a5c SH |
1005 | /* Grab a reference so hotplug does not delete the BlockDriverState from |
1006 | * underneath us. | |
1007 | */ | |
1008 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1009 | ||
12bd451f SH |
1010 | trace_qmp_block_stream(bs, bs->job); |
1011 | } | |
2d47c6e9 SH |
1012 | |
1013 | static BlockJob *find_block_job(const char *device) | |
1014 | { | |
1015 | BlockDriverState *bs; | |
1016 | ||
1017 | bs = bdrv_find(device); | |
1018 | if (!bs || !bs->job) { | |
1019 | return NULL; | |
1020 | } | |
1021 | return bs->job; | |
1022 | } | |
1023 | ||
1024 | void qmp_block_job_set_speed(const char *device, int64_t value, Error **errp) | |
1025 | { | |
1026 | BlockJob *job = find_block_job(device); | |
1027 | ||
1028 | if (!job) { | |
1029 | error_set(errp, QERR_DEVICE_NOT_ACTIVE, device); | |
1030 | return; | |
1031 | } | |
1032 | ||
1033 | if (block_job_set_speed(job, value) < 0) { | |
1034 | error_set(errp, QERR_NOT_SUPPORTED); | |
1035 | } | |
1036 | } | |
370521a1 SH |
1037 | |
1038 | void qmp_block_job_cancel(const char *device, Error **errp) | |
1039 | { | |
1040 | BlockJob *job = find_block_job(device); | |
1041 | ||
1042 | if (!job) { | |
1043 | error_set(errp, QERR_DEVICE_NOT_ACTIVE, device); | |
1044 | return; | |
1045 | } | |
1046 | ||
1047 | trace_qmp_block_job_cancel(job); | |
1048 | block_job_cancel(job); | |
1049 | } | |
fb5458cd SH |
1050 | |
1051 | static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs) | |
1052 | { | |
1053 | BlockJobInfoList **prev = opaque; | |
1054 | BlockJob *job = bs->job; | |
1055 | ||
1056 | if (job) { | |
1057 | BlockJobInfoList *elem; | |
1058 | BlockJobInfo *info = g_new(BlockJobInfo, 1); | |
1059 | *info = (BlockJobInfo){ | |
1060 | .type = g_strdup(job->job_type->job_type), | |
1061 | .device = g_strdup(bdrv_get_device_name(bs)), | |
1062 | .len = job->len, | |
1063 | .offset = job->offset, | |
1064 | .speed = job->speed, | |
1065 | }; | |
1066 | ||
1067 | elem = g_new0(BlockJobInfoList, 1); | |
1068 | elem->value = info; | |
1069 | ||
1070 | (*prev)->next = elem; | |
1071 | *prev = elem; | |
1072 | } | |
1073 | } | |
1074 | ||
1075 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) | |
1076 | { | |
1077 | /* Dummy is a fake list element for holding the head pointer */ | |
1078 | BlockJobInfoList dummy = {}; | |
1079 | BlockJobInfoList *prev = &dummy; | |
1080 | bdrv_iterate(do_qmp_query_block_jobs_one, &prev); | |
1081 | return dummy.next; | |
1082 | } |