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Commit | Line | Data |
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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" | |
16 | #include "sysemu.h" | |
9063f814 RH |
17 | #include "hw/qdev.h" |
18 | #include "block_int.h" | |
666daa68 | 19 | |
c9b62a7e | 20 | static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives); |
666daa68 | 21 | |
14bafc54 MA |
22 | /* |
23 | * We automatically delete the drive when a device using it gets | |
24 | * unplugged. Questionable feature, but we can't just drop it. | |
25 | * Device models call blockdev_mark_auto_del() to schedule the | |
26 | * automatic deletion, and generic qdev code calls blockdev_auto_del() | |
27 | * when deletion is actually safe. | |
28 | */ | |
29 | void blockdev_mark_auto_del(BlockDriverState *bs) | |
30 | { | |
31 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
32 | ||
0fc0f1fa RH |
33 | if (dinfo) { |
34 | dinfo->auto_del = 1; | |
35 | } | |
14bafc54 MA |
36 | } |
37 | ||
38 | void blockdev_auto_del(BlockDriverState *bs) | |
39 | { | |
40 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
41 | ||
0fc0f1fa | 42 | if (dinfo && dinfo->auto_del) { |
14bafc54 MA |
43 | drive_uninit(dinfo); |
44 | } | |
45 | } | |
46 | ||
666daa68 MA |
47 | QemuOpts *drive_add(const char *file, const char *fmt, ...) |
48 | { | |
49 | va_list ap; | |
50 | char optstr[1024]; | |
51 | QemuOpts *opts; | |
52 | ||
53 | va_start(ap, fmt); | |
54 | vsnprintf(optstr, sizeof(optstr), fmt, ap); | |
55 | va_end(ap); | |
56 | ||
3329f07b | 57 | opts = qemu_opts_parse(qemu_find_opts("drive"), optstr, 0); |
666daa68 MA |
58 | if (!opts) { |
59 | return NULL; | |
60 | } | |
61 | if (file) | |
62 | qemu_opt_set(opts, "file", file); | |
63 | return opts; | |
64 | } | |
65 | ||
66 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) | |
67 | { | |
68 | DriveInfo *dinfo; | |
69 | ||
70 | /* seek interface, bus and unit */ | |
71 | ||
72 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
73 | if (dinfo->type == type && | |
74 | dinfo->bus == bus && | |
75 | dinfo->unit == unit) | |
76 | return dinfo; | |
77 | } | |
78 | ||
79 | return NULL; | |
80 | } | |
81 | ||
666daa68 MA |
82 | int drive_get_max_bus(BlockInterfaceType type) |
83 | { | |
84 | int max_bus; | |
85 | DriveInfo *dinfo; | |
86 | ||
87 | max_bus = -1; | |
88 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
89 | if(dinfo->type == type && | |
90 | dinfo->bus > max_bus) | |
91 | max_bus = dinfo->bus; | |
92 | } | |
93 | return max_bus; | |
94 | } | |
95 | ||
e4700e59 | 96 | DriveInfo *drive_get_by_blockdev(BlockDriverState *bs) |
666daa68 MA |
97 | { |
98 | DriveInfo *dinfo; | |
99 | ||
100 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
e4700e59 MA |
101 | if (dinfo->bdrv == bs) { |
102 | return dinfo; | |
103 | } | |
666daa68 | 104 | } |
e4700e59 | 105 | return NULL; |
666daa68 MA |
106 | } |
107 | ||
666daa68 MA |
108 | static void bdrv_format_print(void *opaque, const char *name) |
109 | { | |
110 | fprintf(stderr, " %s", name); | |
111 | } | |
112 | ||
113 | void drive_uninit(DriveInfo *dinfo) | |
114 | { | |
115 | qemu_opts_del(dinfo->opts); | |
116 | bdrv_delete(dinfo->bdrv); | |
117 | QTAILQ_REMOVE(&drives, dinfo, next); | |
118 | qemu_free(dinfo); | |
119 | } | |
120 | ||
121 | static int parse_block_error_action(const char *buf, int is_read) | |
122 | { | |
123 | if (!strcmp(buf, "ignore")) { | |
124 | return BLOCK_ERR_IGNORE; | |
125 | } else if (!is_read && !strcmp(buf, "enospc")) { | |
126 | return BLOCK_ERR_STOP_ENOSPC; | |
127 | } else if (!strcmp(buf, "stop")) { | |
128 | return BLOCK_ERR_STOP_ANY; | |
129 | } else if (!strcmp(buf, "report")) { | |
130 | return BLOCK_ERR_REPORT; | |
131 | } else { | |
132 | fprintf(stderr, "qemu: '%s' invalid %s error action\n", | |
133 | buf, is_read ? "read" : "write"); | |
134 | return -1; | |
135 | } | |
136 | } | |
137 | ||
138 | DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi, int *fatal_error) | |
139 | { | |
140 | const char *buf; | |
141 | const char *file = NULL; | |
142 | char devname[128]; | |
143 | const char *serial; | |
144 | const char *mediastr = ""; | |
145 | BlockInterfaceType type; | |
146 | enum { MEDIA_DISK, MEDIA_CDROM } media; | |
147 | int bus_id, unit_id; | |
148 | int cyls, heads, secs, translation; | |
149 | BlockDriver *drv = NULL; | |
150 | int max_devs; | |
151 | int index; | |
152 | int ro = 0; | |
153 | int bdrv_flags = 0; | |
154 | int on_read_error, on_write_error; | |
155 | const char *devaddr; | |
156 | DriveInfo *dinfo; | |
157 | int snapshot = 0; | |
158 | int ret; | |
159 | ||
160 | *fatal_error = 1; | |
161 | ||
162 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
163 | ||
164 | if (default_to_scsi) { | |
165 | type = IF_SCSI; | |
166 | max_devs = MAX_SCSI_DEVS; | |
167 | pstrcpy(devname, sizeof(devname), "scsi"); | |
168 | } else { | |
169 | type = IF_IDE; | |
170 | max_devs = MAX_IDE_DEVS; | |
171 | pstrcpy(devname, sizeof(devname), "ide"); | |
172 | } | |
173 | media = MEDIA_DISK; | |
174 | ||
175 | /* extract parameters */ | |
176 | bus_id = qemu_opt_get_number(opts, "bus", 0); | |
177 | unit_id = qemu_opt_get_number(opts, "unit", -1); | |
178 | index = qemu_opt_get_number(opts, "index", -1); | |
179 | ||
180 | cyls = qemu_opt_get_number(opts, "cyls", 0); | |
181 | heads = qemu_opt_get_number(opts, "heads", 0); | |
182 | secs = qemu_opt_get_number(opts, "secs", 0); | |
183 | ||
184 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); | |
185 | ro = qemu_opt_get_bool(opts, "readonly", 0); | |
186 | ||
187 | file = qemu_opt_get(opts, "file"); | |
188 | serial = qemu_opt_get(opts, "serial"); | |
189 | ||
190 | if ((buf = qemu_opt_get(opts, "if")) != NULL) { | |
191 | pstrcpy(devname, sizeof(devname), buf); | |
192 | if (!strcmp(buf, "ide")) { | |
193 | type = IF_IDE; | |
194 | max_devs = MAX_IDE_DEVS; | |
195 | } else if (!strcmp(buf, "scsi")) { | |
196 | type = IF_SCSI; | |
197 | max_devs = MAX_SCSI_DEVS; | |
198 | } else if (!strcmp(buf, "floppy")) { | |
199 | type = IF_FLOPPY; | |
200 | max_devs = 0; | |
201 | } else if (!strcmp(buf, "pflash")) { | |
202 | type = IF_PFLASH; | |
203 | max_devs = 0; | |
204 | } else if (!strcmp(buf, "mtd")) { | |
205 | type = IF_MTD; | |
206 | max_devs = 0; | |
207 | } else if (!strcmp(buf, "sd")) { | |
208 | type = IF_SD; | |
209 | max_devs = 0; | |
210 | } else if (!strcmp(buf, "virtio")) { | |
211 | type = IF_VIRTIO; | |
212 | max_devs = 0; | |
213 | } else if (!strcmp(buf, "xen")) { | |
214 | type = IF_XEN; | |
215 | max_devs = 0; | |
216 | } else if (!strcmp(buf, "none")) { | |
217 | type = IF_NONE; | |
218 | max_devs = 0; | |
219 | } else { | |
220 | fprintf(stderr, "qemu: unsupported bus type '%s'\n", buf); | |
221 | return NULL; | |
222 | } | |
223 | } | |
224 | ||
225 | if (cyls || heads || secs) { | |
226 | if (cyls < 1 || (type == IF_IDE && cyls > 16383)) { | |
227 | fprintf(stderr, "qemu: '%s' invalid physical cyls number\n", buf); | |
228 | return NULL; | |
229 | } | |
230 | if (heads < 1 || (type == IF_IDE && heads > 16)) { | |
231 | fprintf(stderr, "qemu: '%s' invalid physical heads number\n", buf); | |
232 | return NULL; | |
233 | } | |
234 | if (secs < 1 || (type == IF_IDE && secs > 63)) { | |
235 | fprintf(stderr, "qemu: '%s' invalid physical secs number\n", buf); | |
236 | return NULL; | |
237 | } | |
238 | } | |
239 | ||
240 | if ((buf = qemu_opt_get(opts, "trans")) != NULL) { | |
241 | if (!cyls) { | |
242 | fprintf(stderr, | |
243 | "qemu: '%s' trans must be used with cyls,heads and secs\n", | |
244 | buf); | |
245 | return NULL; | |
246 | } | |
247 | if (!strcmp(buf, "none")) | |
248 | translation = BIOS_ATA_TRANSLATION_NONE; | |
249 | else if (!strcmp(buf, "lba")) | |
250 | translation = BIOS_ATA_TRANSLATION_LBA; | |
251 | else if (!strcmp(buf, "auto")) | |
252 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
253 | else { | |
254 | fprintf(stderr, "qemu: '%s' invalid translation type\n", buf); | |
255 | return NULL; | |
256 | } | |
257 | } | |
258 | ||
259 | if ((buf = qemu_opt_get(opts, "media")) != NULL) { | |
260 | if (!strcmp(buf, "disk")) { | |
261 | media = MEDIA_DISK; | |
262 | } else if (!strcmp(buf, "cdrom")) { | |
263 | if (cyls || secs || heads) { | |
264 | fprintf(stderr, | |
265 | "qemu: '%s' invalid physical CHS format\n", buf); | |
266 | return NULL; | |
267 | } | |
268 | media = MEDIA_CDROM; | |
269 | } else { | |
270 | fprintf(stderr, "qemu: '%s' invalid media\n", buf); | |
271 | return NULL; | |
272 | } | |
273 | } | |
274 | ||
275 | if ((buf = qemu_opt_get(opts, "cache")) != NULL) { | |
276 | if (!strcmp(buf, "off") || !strcmp(buf, "none")) { | |
277 | bdrv_flags |= BDRV_O_NOCACHE; | |
278 | } else if (!strcmp(buf, "writeback")) { | |
279 | bdrv_flags |= BDRV_O_CACHE_WB; | |
280 | } else if (!strcmp(buf, "unsafe")) { | |
281 | bdrv_flags |= BDRV_O_CACHE_WB; | |
282 | bdrv_flags |= BDRV_O_NO_FLUSH; | |
283 | } else if (!strcmp(buf, "writethrough")) { | |
284 | /* this is the default */ | |
285 | } else { | |
286 | fprintf(stderr, "qemu: invalid cache option\n"); | |
287 | return NULL; | |
288 | } | |
289 | } | |
290 | ||
291 | #ifdef CONFIG_LINUX_AIO | |
292 | if ((buf = qemu_opt_get(opts, "aio")) != NULL) { | |
293 | if (!strcmp(buf, "native")) { | |
294 | bdrv_flags |= BDRV_O_NATIVE_AIO; | |
295 | } else if (!strcmp(buf, "threads")) { | |
296 | /* this is the default */ | |
297 | } else { | |
298 | fprintf(stderr, "qemu: invalid aio option\n"); | |
299 | return NULL; | |
300 | } | |
301 | } | |
302 | #endif | |
303 | ||
304 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
305 | if (strcmp(buf, "?") == 0) { | |
306 | fprintf(stderr, "qemu: Supported formats:"); | |
307 | bdrv_iterate_format(bdrv_format_print, NULL); | |
308 | fprintf(stderr, "\n"); | |
309 | return NULL; | |
310 | } | |
311 | drv = bdrv_find_whitelisted_format(buf); | |
312 | if (!drv) { | |
313 | fprintf(stderr, "qemu: '%s' invalid format\n", buf); | |
314 | return NULL; | |
315 | } | |
316 | } | |
317 | ||
318 | on_write_error = BLOCK_ERR_STOP_ENOSPC; | |
319 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { | |
320 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) { | |
5dba48a8 | 321 | fprintf(stderr, "werror is not supported by this format\n"); |
666daa68 MA |
322 | return NULL; |
323 | } | |
324 | ||
325 | on_write_error = parse_block_error_action(buf, 0); | |
326 | if (on_write_error < 0) { | |
327 | return NULL; | |
328 | } | |
329 | } | |
330 | ||
331 | on_read_error = BLOCK_ERR_REPORT; | |
332 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { | |
5dba48a8 KW |
333 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) { |
334 | fprintf(stderr, "rerror is not supported by this format\n"); | |
666daa68 MA |
335 | return NULL; |
336 | } | |
337 | ||
338 | on_read_error = parse_block_error_action(buf, 1); | |
339 | if (on_read_error < 0) { | |
340 | return NULL; | |
341 | } | |
342 | } | |
343 | ||
344 | if ((devaddr = qemu_opt_get(opts, "addr")) != NULL) { | |
345 | if (type != IF_VIRTIO) { | |
346 | fprintf(stderr, "addr is not supported\n"); | |
347 | return NULL; | |
348 | } | |
349 | } | |
350 | ||
351 | /* compute bus and unit according index */ | |
352 | ||
353 | if (index != -1) { | |
354 | if (bus_id != 0 || unit_id != -1) { | |
355 | fprintf(stderr, | |
356 | "qemu: index cannot be used with bus and unit\n"); | |
357 | return NULL; | |
358 | } | |
359 | if (max_devs == 0) | |
360 | { | |
361 | unit_id = index; | |
362 | bus_id = 0; | |
363 | } else { | |
364 | unit_id = index % max_devs; | |
365 | bus_id = index / max_devs; | |
366 | } | |
367 | } | |
368 | ||
369 | /* if user doesn't specify a unit_id, | |
370 | * try to find the first free | |
371 | */ | |
372 | ||
373 | if (unit_id == -1) { | |
374 | unit_id = 0; | |
375 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
376 | unit_id++; | |
377 | if (max_devs && unit_id >= max_devs) { | |
378 | unit_id -= max_devs; | |
379 | bus_id++; | |
380 | } | |
381 | } | |
382 | } | |
383 | ||
384 | /* check unit id */ | |
385 | ||
386 | if (max_devs && unit_id >= max_devs) { | |
387 | fprintf(stderr, "qemu: unit %d too big (max is %d)\n", | |
388 | unit_id, max_devs - 1); | |
389 | return NULL; | |
390 | } | |
391 | ||
392 | /* | |
393 | * ignore multiple definitions | |
394 | */ | |
395 | ||
396 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
397 | *fatal_error = 0; | |
398 | return NULL; | |
399 | } | |
400 | ||
401 | /* init */ | |
402 | ||
403 | dinfo = qemu_mallocz(sizeof(*dinfo)); | |
404 | if ((buf = qemu_opts_id(opts)) != NULL) { | |
405 | dinfo->id = qemu_strdup(buf); | |
406 | } else { | |
407 | /* no id supplied -> create one */ | |
408 | dinfo->id = qemu_mallocz(32); | |
409 | if (type == IF_IDE || type == IF_SCSI) | |
410 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
411 | if (max_devs) | |
412 | snprintf(dinfo->id, 32, "%s%i%s%i", | |
413 | devname, bus_id, mediastr, unit_id); | |
414 | else | |
415 | snprintf(dinfo->id, 32, "%s%s%i", | |
416 | devname, mediastr, unit_id); | |
417 | } | |
418 | dinfo->bdrv = bdrv_new(dinfo->id); | |
419 | dinfo->devaddr = devaddr; | |
420 | dinfo->type = type; | |
421 | dinfo->bus = bus_id; | |
422 | dinfo->unit = unit_id; | |
666daa68 MA |
423 | dinfo->opts = opts; |
424 | if (serial) | |
653dbec7 | 425 | strncpy(dinfo->serial, serial, sizeof(dinfo->serial) - 1); |
666daa68 MA |
426 | QTAILQ_INSERT_TAIL(&drives, dinfo, next); |
427 | ||
abd7f68d MA |
428 | bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error); |
429 | ||
666daa68 MA |
430 | switch(type) { |
431 | case IF_IDE: | |
432 | case IF_SCSI: | |
433 | case IF_XEN: | |
434 | case IF_NONE: | |
435 | switch(media) { | |
436 | case MEDIA_DISK: | |
437 | if (cyls != 0) { | |
438 | bdrv_set_geometry_hint(dinfo->bdrv, cyls, heads, secs); | |
439 | bdrv_set_translation_hint(dinfo->bdrv, translation); | |
440 | } | |
441 | break; | |
442 | case MEDIA_CDROM: | |
443 | bdrv_set_type_hint(dinfo->bdrv, BDRV_TYPE_CDROM); | |
444 | break; | |
445 | } | |
446 | break; | |
447 | case IF_SD: | |
448 | /* FIXME: This isn't really a floppy, but it's a reasonable | |
449 | approximation. */ | |
450 | case IF_FLOPPY: | |
451 | bdrv_set_type_hint(dinfo->bdrv, BDRV_TYPE_FLOPPY); | |
452 | break; | |
453 | case IF_PFLASH: | |
454 | case IF_MTD: | |
455 | break; | |
456 | case IF_VIRTIO: | |
457 | /* add virtio block device */ | |
3329f07b | 458 | opts = qemu_opts_create(qemu_find_opts("device"), NULL, 0); |
666daa68 MA |
459 | qemu_opt_set(opts, "driver", "virtio-blk-pci"); |
460 | qemu_opt_set(opts, "drive", dinfo->id); | |
461 | if (devaddr) | |
462 | qemu_opt_set(opts, "addr", devaddr); | |
463 | break; | |
464 | case IF_COUNT: | |
465 | abort(); | |
466 | } | |
dd5b0d71 | 467 | if (!file || !*file) { |
666daa68 MA |
468 | *fatal_error = 0; |
469 | return NULL; | |
470 | } | |
471 | if (snapshot) { | |
472 | /* always use cache=unsafe with snapshot */ | |
473 | bdrv_flags &= ~BDRV_O_CACHE_MASK; | |
474 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); | |
475 | } | |
476 | ||
477 | if (media == MEDIA_CDROM) { | |
478 | /* CDROM is fine for any interface, don't check. */ | |
479 | ro = 1; | |
480 | } else if (ro == 1) { | |
481 | if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY && type != IF_NONE) { | |
482 | fprintf(stderr, "qemu: readonly flag not supported for drive with this interface\n"); | |
483 | return NULL; | |
484 | } | |
485 | } | |
486 | ||
487 | bdrv_flags |= ro ? 0 : BDRV_O_RDWR; | |
488 | ||
489 | ret = bdrv_open(dinfo->bdrv, file, bdrv_flags, drv); | |
490 | if (ret < 0) { | |
491 | fprintf(stderr, "qemu: could not open disk image %s: %s\n", | |
492 | file, strerror(-ret)); | |
493 | return NULL; | |
494 | } | |
495 | ||
496 | if (bdrv_key_required(dinfo->bdrv)) | |
497 | autostart = 0; | |
498 | *fatal_error = 0; | |
499 | return dinfo; | |
500 | } | |
501 | ||
502 | void do_commit(Monitor *mon, const QDict *qdict) | |
503 | { | |
666daa68 | 504 | const char *device = qdict_get_str(qdict, "device"); |
6ab4b5ab | 505 | BlockDriverState *bs; |
666daa68 | 506 | |
6ab4b5ab MA |
507 | if (!strcmp(device, "all")) { |
508 | bdrv_commit_all(); | |
509 | } else { | |
510 | bs = bdrv_find(device); | |
ac59eb95 MA |
511 | if (!bs) { |
512 | qerror_report(QERR_DEVICE_NOT_FOUND, device); | |
513 | return; | |
6ab4b5ab | 514 | } |
ac59eb95 | 515 | bdrv_commit(bs); |
666daa68 MA |
516 | } |
517 | } | |
518 | ||
f8882568 JS |
519 | int do_snapshot_blkdev(Monitor *mon, const QDict *qdict, QObject **ret_data) |
520 | { | |
521 | const char *device = qdict_get_str(qdict, "device"); | |
522 | const char *filename = qdict_get_try_str(qdict, "snapshot_file"); | |
523 | const char *format = qdict_get_try_str(qdict, "format"); | |
524 | BlockDriverState *bs; | |
525 | BlockDriver *drv, *proto_drv; | |
526 | int ret = 0; | |
527 | int flags; | |
528 | ||
529 | bs = bdrv_find(device); | |
530 | if (!bs) { | |
531 | qerror_report(QERR_DEVICE_NOT_FOUND, device); | |
532 | ret = -1; | |
533 | goto out; | |
534 | } | |
535 | ||
536 | if (!format) { | |
537 | format = "qcow2"; | |
538 | } | |
539 | ||
540 | drv = bdrv_find_format(format); | |
541 | if (!drv) { | |
542 | qerror_report(QERR_INVALID_BLOCK_FORMAT, format); | |
543 | ret = -1; | |
544 | goto out; | |
545 | } | |
546 | ||
547 | proto_drv = bdrv_find_protocol(filename); | |
548 | if (!proto_drv) { | |
549 | qerror_report(QERR_INVALID_BLOCK_FORMAT, format); | |
550 | ret = -1; | |
551 | goto out; | |
552 | } | |
553 | ||
554 | ret = bdrv_img_create(filename, format, bs->filename, | |
555 | bs->drv->format_name, NULL, -1, bs->open_flags); | |
556 | if (ret) { | |
557 | goto out; | |
558 | } | |
559 | ||
560 | qemu_aio_flush(); | |
561 | bdrv_flush(bs); | |
562 | ||
563 | flags = bs->open_flags; | |
564 | bdrv_close(bs); | |
565 | ret = bdrv_open(bs, filename, flags, drv); | |
566 | /* | |
567 | * If reopening the image file we just created fails, we really | |
568 | * are in trouble :( | |
569 | */ | |
570 | if (ret != 0) { | |
571 | abort(); | |
572 | } | |
573 | out: | |
574 | if (ret) { | |
575 | ret = -1; | |
576 | } | |
577 | ||
578 | return ret; | |
579 | } | |
580 | ||
666daa68 MA |
581 | static int eject_device(Monitor *mon, BlockDriverState *bs, int force) |
582 | { | |
3b5276b5 EH |
583 | if (!force) { |
584 | if (!bdrv_is_removable(bs)) { | |
585 | qerror_report(QERR_DEVICE_NOT_REMOVABLE, | |
586 | bdrv_get_device_name(bs)); | |
587 | return -1; | |
588 | } | |
589 | if (bdrv_is_locked(bs)) { | |
590 | qerror_report(QERR_DEVICE_LOCKED, bdrv_get_device_name(bs)); | |
591 | return -1; | |
666daa68 | 592 | } |
666daa68 | 593 | } |
3b5276b5 | 594 | bdrv_close(bs); |
666daa68 MA |
595 | return 0; |
596 | } | |
597 | ||
598 | int do_eject(Monitor *mon, const QDict *qdict, QObject **ret_data) | |
599 | { | |
600 | BlockDriverState *bs; | |
eb159d13 | 601 | int force = qdict_get_try_bool(qdict, "force", 0); |
666daa68 MA |
602 | const char *filename = qdict_get_str(qdict, "device"); |
603 | ||
604 | bs = bdrv_find(filename); | |
605 | if (!bs) { | |
606 | qerror_report(QERR_DEVICE_NOT_FOUND, filename); | |
607 | return -1; | |
608 | } | |
609 | return eject_device(mon, bs, force); | |
610 | } | |
611 | ||
612 | int do_block_set_passwd(Monitor *mon, const QDict *qdict, | |
613 | QObject **ret_data) | |
614 | { | |
615 | BlockDriverState *bs; | |
616 | int err; | |
617 | ||
618 | bs = bdrv_find(qdict_get_str(qdict, "device")); | |
619 | if (!bs) { | |
620 | qerror_report(QERR_DEVICE_NOT_FOUND, qdict_get_str(qdict, "device")); | |
621 | return -1; | |
622 | } | |
623 | ||
624 | err = bdrv_set_key(bs, qdict_get_str(qdict, "password")); | |
625 | if (err == -EINVAL) { | |
626 | qerror_report(QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); | |
627 | return -1; | |
628 | } else if (err < 0) { | |
629 | qerror_report(QERR_INVALID_PASSWORD); | |
630 | return -1; | |
631 | } | |
632 | ||
633 | return 0; | |
634 | } | |
635 | ||
636 | int do_change_block(Monitor *mon, const char *device, | |
637 | const char *filename, const char *fmt) | |
638 | { | |
639 | BlockDriverState *bs; | |
640 | BlockDriver *drv = NULL; | |
641 | int bdrv_flags; | |
642 | ||
643 | bs = bdrv_find(device); | |
644 | if (!bs) { | |
645 | qerror_report(QERR_DEVICE_NOT_FOUND, device); | |
646 | return -1; | |
647 | } | |
648 | if (fmt) { | |
649 | drv = bdrv_find_whitelisted_format(fmt); | |
650 | if (!drv) { | |
651 | qerror_report(QERR_INVALID_BLOCK_FORMAT, fmt); | |
652 | return -1; | |
653 | } | |
654 | } | |
655 | if (eject_device(mon, bs, 0) < 0) { | |
656 | return -1; | |
657 | } | |
528f7663 | 658 | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR; |
199630b6 | 659 | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0; |
666daa68 MA |
660 | if (bdrv_open(bs, filename, bdrv_flags, drv) < 0) { |
661 | qerror_report(QERR_OPEN_FILE_FAILED, filename); | |
662 | return -1; | |
663 | } | |
664 | return monitor_read_bdrv_key_start(mon, bs, NULL, NULL); | |
665 | } | |
9063f814 RH |
666 | |
667 | int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) | |
668 | { | |
669 | const char *id = qdict_get_str(qdict, "id"); | |
670 | BlockDriverState *bs; | |
671 | BlockDriverState **ptr; | |
672 | Property *prop; | |
673 | ||
674 | bs = bdrv_find(id); | |
675 | if (!bs) { | |
676 | qerror_report(QERR_DEVICE_NOT_FOUND, id); | |
677 | return -1; | |
678 | } | |
679 | ||
680 | /* quiesce block driver; prevent further io */ | |
681 | qemu_aio_flush(); | |
682 | bdrv_flush(bs); | |
683 | bdrv_close(bs); | |
684 | ||
685 | /* clean up guest state from pointing to host resource by | |
686 | * finding and removing DeviceState "drive" property */ | |
687 | for (prop = bs->peer->info->props; prop && prop->name; prop++) { | |
688 | if (prop->info->type == PROP_TYPE_DRIVE) { | |
689 | ptr = qdev_get_prop_ptr(bs->peer, prop); | |
690 | if ((*ptr) == bs) { | |
691 | bdrv_detach(bs, bs->peer); | |
692 | *ptr = NULL; | |
693 | break; | |
694 | } | |
695 | } | |
696 | } | |
697 | ||
698 | /* clean up host side */ | |
699 | drive_uninit(drive_get_by_blockdev(bs)); | |
700 | ||
701 | return 0; | |
702 | } |