Revision 84a12e66
| b/Makefile.objs | ||
|---|---|---|
| 12 | 12 |
block-obj-$(CONFIG_POSIX) += posix-aio-compat.o |
| 13 | 13 |
block-obj-$(CONFIG_LINUX_AIO) += linux-aio.o |
| 14 | 14 |
|
| 15 |
block-nested-y += cow.o qcow.o vdi.o vmdk.o cloop.o dmg.o bochs.o vpc.o vvfat.o |
|
| 15 |
block-nested-y += raw.o cow.o qcow.o vdi.o vmdk.o cloop.o dmg.o bochs.o vpc.o vvfat.o
|
|
| 16 | 16 |
block-nested-y += qcow2.o qcow2-refcount.o qcow2-cluster.o qcow2-snapshot.o |
| 17 | 17 |
block-nested-y += parallels.o nbd.o blkdebug.o |
| 18 | 18 |
block-nested-$(CONFIG_WIN32) += raw-win32.o |
| b/block.c | ||
|---|---|---|
| 54 | 54 |
uint8_t *buf, int nb_sectors); |
| 55 | 55 |
static int bdrv_write_em(BlockDriverState *bs, int64_t sector_num, |
| 56 | 56 |
const uint8_t *buf, int nb_sectors); |
| 57 |
static BlockDriver *find_protocol(const char *filename); |
|
| 57 | 58 |
|
| 58 | 59 |
static QTAILQ_HEAD(, BlockDriverState) bdrv_states = |
| 59 | 60 |
QTAILQ_HEAD_INITIALIZER(bdrv_states); |
| ... | ... | |
| 203 | 204 |
return drv->bdrv_create(filename, options); |
| 204 | 205 |
} |
| 205 | 206 |
|
| 207 |
int bdrv_create_file(const char* filename, QEMUOptionParameter *options) |
|
| 208 |
{
|
|
| 209 |
BlockDriver *drv; |
|
| 210 |
|
|
| 211 |
drv = find_protocol(filename); |
|
| 212 |
if (drv == NULL) {
|
|
| 213 |
drv = bdrv_find_format("file");
|
|
| 214 |
} |
|
| 215 |
|
|
| 216 |
return bdrv_create(drv, filename, options); |
|
| 217 |
} |
|
| 218 |
|
|
| 206 | 219 |
#ifdef _WIN32 |
| 207 | 220 |
void get_tmp_filename(char *filename, int size) |
| 208 | 221 |
{
|
| ... | ... | |
| 246 | 259 |
} |
| 247 | 260 |
#endif |
| 248 | 261 |
|
| 262 |
/* |
|
| 263 |
* Detect host devices. By convention, /dev/cdrom[N] is always |
|
| 264 |
* recognized as a host CDROM. |
|
| 265 |
*/ |
|
| 266 |
static BlockDriver *find_hdev_driver(const char *filename) |
|
| 267 |
{
|
|
| 268 |
int score_max = 0, score; |
|
| 269 |
BlockDriver *drv = NULL, *d; |
|
| 270 |
|
|
| 271 |
QLIST_FOREACH(d, &bdrv_drivers, list) {
|
|
| 272 |
if (d->bdrv_probe_device) {
|
|
| 273 |
score = d->bdrv_probe_device(filename); |
|
| 274 |
if (score > score_max) {
|
|
| 275 |
score_max = score; |
|
| 276 |
drv = d; |
|
| 277 |
} |
|
| 278 |
} |
|
| 279 |
} |
|
| 280 |
|
|
| 281 |
return drv; |
|
| 282 |
} |
|
| 283 |
|
|
| 249 | 284 |
static BlockDriver *find_protocol(const char *filename) |
| 250 | 285 |
{
|
| 251 | 286 |
BlockDriver *drv1; |
| ... | ... | |
| 256 | 291 |
#ifdef _WIN32 |
| 257 | 292 |
if (is_windows_drive(filename) || |
| 258 | 293 |
is_windows_drive_prefix(filename)) |
| 259 |
return bdrv_find_format("raw");
|
|
| 294 |
return bdrv_find_format("file");
|
|
| 260 | 295 |
#endif |
| 261 | 296 |
p = strchr(filename, ':'); |
| 262 |
if (!p) |
|
| 263 |
return bdrv_find_format("raw");
|
|
| 297 |
if (!p) {
|
|
| 298 |
drv1 = find_hdev_driver(filename); |
|
| 299 |
if (!drv1) {
|
|
| 300 |
drv1 = bdrv_find_format("file");
|
|
| 301 |
} |
|
| 302 |
return drv1; |
|
| 303 |
} |
|
| 264 | 304 |
len = p - filename; |
| 265 | 305 |
if (len > sizeof(protocol) - 1) |
| 266 | 306 |
len = sizeof(protocol) - 1; |
| ... | ... | |
| 275 | 315 |
return NULL; |
| 276 | 316 |
} |
| 277 | 317 |
|
| 278 |
/* |
|
| 279 |
* Detect host devices. By convention, /dev/cdrom[N] is always |
|
| 280 |
* recognized as a host CDROM. |
|
| 281 |
*/ |
|
| 282 |
static BlockDriver *find_hdev_driver(const char *filename) |
|
| 283 |
{
|
|
| 284 |
int score_max = 0, score; |
|
| 285 |
BlockDriver *drv = NULL, *d; |
|
| 286 |
|
|
| 287 |
QLIST_FOREACH(d, &bdrv_drivers, list) {
|
|
| 288 |
if (d->bdrv_probe_device) {
|
|
| 289 |
score = d->bdrv_probe_device(filename); |
|
| 290 |
if (score > score_max) {
|
|
| 291 |
score_max = score; |
|
| 292 |
drv = d; |
|
| 293 |
} |
|
| 294 |
} |
|
| 295 |
} |
|
| 296 |
|
|
| 297 |
return drv; |
|
| 298 |
} |
|
| 299 |
|
|
| 300 | 318 |
static BlockDriver *find_image_format(const char *filename) |
| 301 | 319 |
{
|
| 302 | 320 |
int ret, score, score_max; |
| ... | ... | |
| 319 | 337 |
} |
| 320 | 338 |
|
| 321 | 339 |
score_max = 0; |
| 340 |
drv = NULL; |
|
| 322 | 341 |
QLIST_FOREACH(drv1, &bdrv_drivers, list) {
|
| 323 | 342 |
if (drv1->bdrv_probe) {
|
| 324 | 343 |
score = drv1->bdrv_probe(buf, ret, filename); |
| ... | ... | |
| 423 | 442 |
pstrcpy(bs->filename, sizeof(bs->filename), filename); |
| 424 | 443 |
|
| 425 | 444 |
if (!drv) {
|
| 426 |
drv = find_hdev_driver(filename); |
|
| 427 |
if (!drv) {
|
|
| 428 |
drv = find_image_format(filename); |
|
| 429 |
} |
|
| 445 |
drv = find_image_format(filename); |
|
| 430 | 446 |
} |
| 431 | 447 |
|
| 432 | 448 |
if (!drv) {
|
| b/block.h | ||
|---|---|---|
| 57 | 57 |
BlockDriver *bdrv_find_whitelisted_format(const char *format_name); |
| 58 | 58 |
int bdrv_create(BlockDriver *drv, const char* filename, |
| 59 | 59 |
QEMUOptionParameter *options); |
| 60 |
int bdrv_create_file(const char* filename, QEMUOptionParameter *options); |
|
| 60 | 61 |
BlockDriverState *bdrv_new(const char *device_name); |
| 61 | 62 |
void bdrv_delete(BlockDriverState *bs); |
| 62 | 63 |
int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags); |
| b/block/raw-posix.c | ||
|---|---|---|
| 768 | 768 |
{ NULL }
|
| 769 | 769 |
}; |
| 770 | 770 |
|
| 771 |
static BlockDriver bdrv_raw = {
|
|
| 772 |
.format_name = "raw", |
|
| 771 |
static BlockDriver bdrv_file = {
|
|
| 772 |
.format_name = "file", |
|
| 773 |
.protocol_name = "file", |
|
| 773 | 774 |
.instance_size = sizeof(BDRVRawState), |
| 774 | 775 |
.bdrv_probe = NULL, /* no probe for protocols */ |
| 775 | 776 |
.bdrv_open = raw_open, |
| ... | ... | |
| 1026 | 1027 |
|
| 1027 | 1028 |
static BlockDriver bdrv_host_device = {
|
| 1028 | 1029 |
.format_name = "host_device", |
| 1030 |
.protocol_name = "host_device", |
|
| 1029 | 1031 |
.instance_size = sizeof(BDRVRawState), |
| 1030 | 1032 |
.bdrv_probe_device = hdev_probe_device, |
| 1031 | 1033 |
.bdrv_open = hdev_open, |
| ... | ... | |
| 1140 | 1142 |
|
| 1141 | 1143 |
static BlockDriver bdrv_host_floppy = {
|
| 1142 | 1144 |
.format_name = "host_floppy", |
| 1145 |
.protocol_name = "host_floppy", |
|
| 1143 | 1146 |
.instance_size = sizeof(BDRVRawState), |
| 1144 | 1147 |
.bdrv_probe_device = floppy_probe_device, |
| 1145 | 1148 |
.bdrv_open = floppy_open, |
| ... | ... | |
| 1239 | 1242 |
|
| 1240 | 1243 |
static BlockDriver bdrv_host_cdrom = {
|
| 1241 | 1244 |
.format_name = "host_cdrom", |
| 1245 |
.protocol_name = "host_cdrom", |
|
| 1242 | 1246 |
.instance_size = sizeof(BDRVRawState), |
| 1243 | 1247 |
.bdrv_probe_device = cdrom_probe_device, |
| 1244 | 1248 |
.bdrv_open = cdrom_open, |
| ... | ... | |
| 1361 | 1365 |
|
| 1362 | 1366 |
static BlockDriver bdrv_host_cdrom = {
|
| 1363 | 1367 |
.format_name = "host_cdrom", |
| 1368 |
.protocol_name = "host_cdrom", |
|
| 1364 | 1369 |
.instance_size = sizeof(BDRVRawState), |
| 1365 | 1370 |
.bdrv_probe_device = cdrom_probe_device, |
| 1366 | 1371 |
.bdrv_open = cdrom_open, |
| ... | ... | |
| 1385 | 1390 |
}; |
| 1386 | 1391 |
#endif /* __FreeBSD__ */ |
| 1387 | 1392 |
|
| 1388 |
static void bdrv_raw_init(void)
|
|
| 1393 |
static void bdrv_file_init(void)
|
|
| 1389 | 1394 |
{
|
| 1390 | 1395 |
/* |
| 1391 | 1396 |
* Register all the drivers. Note that order is important, the driver |
| 1392 | 1397 |
* registered last will get probed first. |
| 1393 | 1398 |
*/ |
| 1394 |
bdrv_register(&bdrv_raw);
|
|
| 1399 |
bdrv_register(&bdrv_file);
|
|
| 1395 | 1400 |
bdrv_register(&bdrv_host_device); |
| 1396 | 1401 |
#ifdef __linux__ |
| 1397 | 1402 |
bdrv_register(&bdrv_host_floppy); |
| ... | ... | |
| 1402 | 1407 |
#endif |
| 1403 | 1408 |
} |
| 1404 | 1409 |
|
| 1405 |
block_init(bdrv_raw_init); |
|
| 1410 |
block_init(bdrv_file_init); |
|
| b/block/raw-win32.c | ||
|---|---|---|
| 238 | 238 |
{ NULL }
|
| 239 | 239 |
}; |
| 240 | 240 |
|
| 241 |
static BlockDriver bdrv_raw = {
|
|
| 242 |
.format_name = "raw", |
|
| 241 |
static BlockDriver bdrv_file = {
|
|
| 242 |
.format_name = "file", |
|
| 243 |
.protocol_name = "file", |
|
| 243 | 244 |
.instance_size = sizeof(BDRVRawState), |
| 244 | 245 |
.bdrv_open = raw_open, |
| 245 | 246 |
.bdrv_close = raw_close, |
| ... | ... | |
| 395 | 396 |
|
| 396 | 397 |
static BlockDriver bdrv_host_device = {
|
| 397 | 398 |
.format_name = "host_device", |
| 399 |
.protocol_name = "host_device", |
|
| 398 | 400 |
.instance_size = sizeof(BDRVRawState), |
| 399 | 401 |
.bdrv_probe_device = hdev_probe_device, |
| 400 | 402 |
.bdrv_open = hdev_open, |
| ... | ... | |
| 406 | 408 |
.bdrv_getlength = raw_getlength, |
| 407 | 409 |
}; |
| 408 | 410 |
|
| 409 |
static void bdrv_raw_init(void)
|
|
| 411 |
static void bdrv_file_init(void)
|
|
| 410 | 412 |
{
|
| 411 |
bdrv_register(&bdrv_raw);
|
|
| 413 |
bdrv_register(&bdrv_file);
|
|
| 412 | 414 |
bdrv_register(&bdrv_host_device); |
| 413 | 415 |
} |
| 414 | 416 |
|
| 415 |
block_init(bdrv_raw_init); |
|
| 417 |
block_init(bdrv_file_init); |
|
| b/block/raw.c | ||
|---|---|---|
| 1 |
|
|
| 2 |
#include "qemu-common.h" |
|
| 3 |
#include "block_int.h" |
|
| 4 |
#include "module.h" |
|
| 5 |
|
|
| 6 |
typedef struct RAWState {
|
|
| 7 |
BlockDriverState *hd; |
|
| 8 |
} RAWState; |
|
| 9 |
|
|
| 10 |
static int raw_open(BlockDriverState *bs, const char *filename, int flags) |
|
| 11 |
{
|
|
| 12 |
RAWState *s = bs->opaque; |
|
| 13 |
int ret; |
|
| 14 |
|
|
| 15 |
ret = bdrv_file_open(&s->hd, filename, flags); |
|
| 16 |
if (!ret) {
|
|
| 17 |
bs->sg = s->hd->sg; |
|
| 18 |
} |
|
| 19 |
|
|
| 20 |
return ret; |
|
| 21 |
} |
|
| 22 |
|
|
| 23 |
static int raw_read(BlockDriverState *bs, int64_t sector_num, |
|
| 24 |
uint8_t *buf, int nb_sectors) |
|
| 25 |
{
|
|
| 26 |
RAWState *s = bs->opaque; |
|
| 27 |
return bdrv_read(s->hd, sector_num, buf, nb_sectors); |
|
| 28 |
} |
|
| 29 |
|
|
| 30 |
static int raw_write(BlockDriverState *bs, int64_t sector_num, |
|
| 31 |
const uint8_t *buf, int nb_sectors) |
|
| 32 |
{
|
|
| 33 |
RAWState *s = bs->opaque; |
|
| 34 |
return bdrv_write(s->hd, sector_num, buf, nb_sectors); |
|
| 35 |
} |
|
| 36 |
|
|
| 37 |
static BlockDriverAIOCB *raw_aio_readv(BlockDriverState *bs, |
|
| 38 |
int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, |
|
| 39 |
BlockDriverCompletionFunc *cb, void *opaque) |
|
| 40 |
{
|
|
| 41 |
RAWState *s = bs->opaque; |
|
| 42 |
|
|
| 43 |
return bdrv_aio_readv(s->hd, sector_num, qiov, nb_sectors, cb, opaque); |
|
| 44 |
} |
|
| 45 |
|
|
| 46 |
static BlockDriverAIOCB *raw_aio_writev(BlockDriverState *bs, |
|
| 47 |
int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, |
|
| 48 |
BlockDriverCompletionFunc *cb, void *opaque) |
|
| 49 |
{
|
|
| 50 |
RAWState *s = bs->opaque; |
|
| 51 |
|
|
| 52 |
return bdrv_aio_writev(s->hd, sector_num, qiov, nb_sectors, cb, opaque); |
|
| 53 |
} |
|
| 54 |
|
|
| 55 |
static void raw_close(BlockDriverState *bs) |
|
| 56 |
{
|
|
| 57 |
RAWState *s = bs->opaque; |
|
| 58 |
bdrv_delete(s->hd); |
|
| 59 |
} |
|
| 60 |
|
|
| 61 |
static void raw_flush(BlockDriverState *bs) |
|
| 62 |
{
|
|
| 63 |
RAWState *s = bs->opaque; |
|
| 64 |
bdrv_flush(s->hd); |
|
| 65 |
} |
|
| 66 |
|
|
| 67 |
static BlockDriverAIOCB *raw_aio_flush(BlockDriverState *bs, |
|
| 68 |
BlockDriverCompletionFunc *cb, void *opaque) |
|
| 69 |
{
|
|
| 70 |
RAWState *s = bs->opaque; |
|
| 71 |
return bdrv_aio_flush(s->hd, cb, opaque); |
|
| 72 |
} |
|
| 73 |
|
|
| 74 |
static int64_t raw_getlength(BlockDriverState *bs) |
|
| 75 |
{
|
|
| 76 |
RAWState *s = bs->opaque; |
|
| 77 |
return bdrv_getlength(s->hd); |
|
| 78 |
} |
|
| 79 |
|
|
| 80 |
static int raw_truncate(BlockDriverState *bs, int64_t offset) |
|
| 81 |
{
|
|
| 82 |
RAWState *s = bs->opaque; |
|
| 83 |
return bdrv_truncate(s->hd, offset); |
|
| 84 |
} |
|
| 85 |
|
|
| 86 |
static int raw_probe(const uint8_t *buf, int buf_size, const char *filename) |
|
| 87 |
{
|
|
| 88 |
return 1; /* everything can be opened as raw image */ |
|
| 89 |
} |
|
| 90 |
|
|
| 91 |
static int raw_is_inserted(BlockDriverState *bs) |
|
| 92 |
{
|
|
| 93 |
RAWState *s = bs->opaque; |
|
| 94 |
return bdrv_is_inserted(s->hd); |
|
| 95 |
} |
|
| 96 |
|
|
| 97 |
static int raw_eject(BlockDriverState *bs, int eject_flag) |
|
| 98 |
{
|
|
| 99 |
RAWState *s = bs->opaque; |
|
| 100 |
return bdrv_eject(s->hd, eject_flag); |
|
| 101 |
} |
|
| 102 |
|
|
| 103 |
static int raw_set_locked(BlockDriverState *bs, int locked) |
|
| 104 |
{
|
|
| 105 |
RAWState *s = bs->opaque; |
|
| 106 |
bdrv_set_locked(s->hd, locked); |
|
| 107 |
return 0; |
|
| 108 |
} |
|
| 109 |
|
|
| 110 |
static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
|
| 111 |
{
|
|
| 112 |
RAWState *s = bs->opaque; |
|
| 113 |
return bdrv_ioctl(s->hd, req, buf); |
|
| 114 |
} |
|
| 115 |
|
|
| 116 |
static BlockDriverAIOCB *raw_aio_ioctl(BlockDriverState *bs, |
|
| 117 |
unsigned long int req, void *buf, |
|
| 118 |
BlockDriverCompletionFunc *cb, void *opaque) |
|
| 119 |
{
|
|
| 120 |
RAWState *s = bs->opaque; |
|
| 121 |
return bdrv_aio_ioctl(s->hd, req, buf, cb, opaque); |
|
| 122 |
} |
|
| 123 |
|
|
| 124 |
static int raw_create(const char *filename, QEMUOptionParameter *options) |
|
| 125 |
{
|
|
| 126 |
return bdrv_create_file(filename, options); |
|
| 127 |
} |
|
| 128 |
|
|
| 129 |
static QEMUOptionParameter raw_create_options[] = {
|
|
| 130 |
{
|
|
| 131 |
.name = BLOCK_OPT_SIZE, |
|
| 132 |
.type = OPT_SIZE, |
|
| 133 |
.help = "Virtual disk size" |
|
| 134 |
}, |
|
| 135 |
{ NULL }
|
|
| 136 |
}; |
|
| 137 |
|
|
| 138 |
static BlockDriver bdrv_raw = {
|
|
| 139 |
.format_name = "raw", |
|
| 140 |
|
|
| 141 |
.instance_size = sizeof(RAWState), |
|
| 142 |
|
|
| 143 |
.bdrv_open = raw_open, |
|
| 144 |
.bdrv_close = raw_close, |
|
| 145 |
.bdrv_read = raw_read, |
|
| 146 |
.bdrv_write = raw_write, |
|
| 147 |
.bdrv_flush = raw_flush, |
|
| 148 |
.bdrv_probe = raw_probe, |
|
| 149 |
.bdrv_getlength = raw_getlength, |
|
| 150 |
.bdrv_truncate = raw_truncate, |
|
| 151 |
|
|
| 152 |
.bdrv_aio_readv = raw_aio_readv, |
|
| 153 |
.bdrv_aio_writev = raw_aio_writev, |
|
| 154 |
.bdrv_aio_flush = raw_aio_flush, |
|
| 155 |
|
|
| 156 |
.bdrv_is_inserted = raw_is_inserted, |
|
| 157 |
.bdrv_eject = raw_eject, |
|
| 158 |
.bdrv_set_locked = raw_set_locked, |
|
| 159 |
.bdrv_ioctl = raw_ioctl, |
|
| 160 |
.bdrv_aio_ioctl = raw_aio_ioctl, |
|
| 161 |
|
|
| 162 |
.bdrv_create = raw_create, |
|
| 163 |
.create_options = raw_create_options, |
|
| 164 |
}; |
|
| 165 |
|
|
| 166 |
static void bdrv_raw_init(void) |
|
| 167 |
{
|
|
| 168 |
bdrv_register(&bdrv_raw); |
|
| 169 |
} |
|
| 170 |
|
|
| 171 |
block_init(bdrv_raw_init); |
|
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