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bellardfc01f7e2003-06-30 10:03:06 +00001/*
2 * QEMU System Emulator block driver
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
bellardfc01f7e2003-06-30 10:03:06 +000024#include "vl.h"
bellardea2384d2004-08-01 21:59:26 +000025#include "block_int.h"
bellardfc01f7e2003-06-30 10:03:06 +000026
bellard7674e7b2005-04-26 21:59:26 +000027#ifdef _BSD
28#include <sys/types.h>
29#include <sys/stat.h>
30#include <sys/ioctl.h>
31#include <sys/queue.h>
32#include <sys/disk.h>
33#endif
34
bellard3b0d4f62005-10-30 18:30:10 +000035#ifdef CONFIG_COCOA
36#include <paths.h>
37#include <sys/param.h>
38#include <IOKit/IOKitLib.h>
39#include <IOKit/IOBSD.h>
40#include <IOKit/storage/IOMediaBSDClient.h>
41#include <IOKit/storage/IOMedia.h>
42#include <IOKit/storage/IOCDMedia.h>
43//#include <IOKit/storage/IOCDTypes.h>
44#include <CoreFoundation/CoreFoundation.h>
45#endif
46
bellardb3380822004-03-14 21:38:54 +000047static BlockDriverState *bdrv_first;
bellardea2384d2004-08-01 21:59:26 +000048static BlockDriver *first_drv;
49
bellard3b0d4f62005-10-30 18:30:10 +000050#ifdef CONFIG_COCOA
51static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator );
52static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize );
53
54kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator )
55{
56 kern_return_t kernResult;
57 mach_port_t masterPort;
58 CFMutableDictionaryRef classesToMatch;
59
60 kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort );
61 if ( KERN_SUCCESS != kernResult ) {
62 printf( "IOMasterPort returned %d\n", kernResult );
63 }
64
65 classesToMatch = IOServiceMatching( kIOCDMediaClass );
66 if ( classesToMatch == NULL ) {
67 printf( "IOServiceMatching returned a NULL dictionary.\n" );
68 } else {
69 CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue );
70 }
71 kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator );
72 if ( KERN_SUCCESS != kernResult )
73 {
74 printf( "IOServiceGetMatchingServices returned %d\n", kernResult );
75 }
76
77 return kernResult;
78}
79
80kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize )
81{
82 io_object_t nextMedia;
83 kern_return_t kernResult = KERN_FAILURE;
84 *bsdPath = '\0';
85 nextMedia = IOIteratorNext( mediaIterator );
86 if ( nextMedia )
87 {
88 CFTypeRef bsdPathAsCFString;
89 bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 );
90 if ( bsdPathAsCFString ) {
91 size_t devPathLength;
92 strcpy( bsdPath, _PATH_DEV );
93 strcat( bsdPath, "r" );
94 devPathLength = strlen( bsdPath );
95 if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) {
96 kernResult = KERN_SUCCESS;
97 }
98 CFRelease( bsdPathAsCFString );
99 }
100 IOObjectRelease( nextMedia );
101 }
102
103 return kernResult;
104}
105
106#endif
107
bellardea2384d2004-08-01 21:59:26 +0000108void bdrv_register(BlockDriver *bdrv)
109{
110 bdrv->next = first_drv;
111 first_drv = bdrv;
112}
bellardb3380822004-03-14 21:38:54 +0000113
114/* create a new block device (by default it is empty) */
115BlockDriverState *bdrv_new(const char *device_name)
bellardfc01f7e2003-06-30 10:03:06 +0000116{
bellardb3380822004-03-14 21:38:54 +0000117 BlockDriverState **pbs, *bs;
118
119 bs = qemu_mallocz(sizeof(BlockDriverState));
120 if(!bs)
121 return NULL;
122 pstrcpy(bs->device_name, sizeof(bs->device_name), device_name);
bellardea2384d2004-08-01 21:59:26 +0000123 if (device_name[0] != '\0') {
124 /* insert at the end */
125 pbs = &bdrv_first;
126 while (*pbs != NULL)
127 pbs = &(*pbs)->next;
128 *pbs = bs;
129 }
bellardb3380822004-03-14 21:38:54 +0000130 return bs;
131}
132
bellardea2384d2004-08-01 21:59:26 +0000133BlockDriver *bdrv_find_format(const char *format_name)
134{
135 BlockDriver *drv1;
136 for(drv1 = first_drv; drv1 != NULL; drv1 = drv1->next) {
137 if (!strcmp(drv1->format_name, format_name))
138 return drv1;
139 }
140 return NULL;
141}
142
143int bdrv_create(BlockDriver *drv,
144 const char *filename, int64_t size_in_sectors,
145 const char *backing_file, int flags)
146{
147 if (!drv->bdrv_create)
148 return -ENOTSUP;
149 return drv->bdrv_create(filename, size_in_sectors, backing_file, flags);
150}
151
bellardd5249392004-08-03 21:14:23 +0000152#ifdef _WIN32
bellard95389c82005-12-18 18:28:15 +0000153void get_tmp_filename(char *filename, int size)
bellardd5249392004-08-03 21:14:23 +0000154{
bellard95389c82005-12-18 18:28:15 +0000155 char* p = strrchr(filename, '/');
156
157 if (p == NULL)
158 return;
159
bellardd5249392004-08-03 21:14:23 +0000160 /* XXX: find a better function */
bellard95389c82005-12-18 18:28:15 +0000161 tmpnam(p);
162 *p = '/';
bellardd5249392004-08-03 21:14:23 +0000163}
164#else
bellard95389c82005-12-18 18:28:15 +0000165void get_tmp_filename(char *filename, int size)
bellardea2384d2004-08-01 21:59:26 +0000166{
167 int fd;
bellardd5249392004-08-03 21:14:23 +0000168 /* XXX: race condition possible */
bellardea2384d2004-08-01 21:59:26 +0000169 pstrcpy(filename, size, "/tmp/vl.XXXXXX");
170 fd = mkstemp(filename);
171 close(fd);
172}
bellardd5249392004-08-03 21:14:23 +0000173#endif
bellardea2384d2004-08-01 21:59:26 +0000174
bellard7674e7b2005-04-26 21:59:26 +0000175/* XXX: force raw format if block or character device ? It would
176 simplify the BSD case */
bellardea2384d2004-08-01 21:59:26 +0000177static BlockDriver *find_image_format(const char *filename)
178{
179 int fd, ret, score, score_max;
180 BlockDriver *drv1, *drv;
bellard7674e7b2005-04-26 21:59:26 +0000181 uint8_t *buf;
182 size_t bufsize = 1024;
bellardea2384d2004-08-01 21:59:26 +0000183
184 fd = open(filename, O_RDONLY | O_BINARY | O_LARGEFILE);
bellard712e7872005-04-28 21:09:32 +0000185 if (fd < 0) {
186 buf = NULL;
187 ret = 0;
188 } else {
bellard7674e7b2005-04-26 21:59:26 +0000189#ifdef DIOCGSECTORSIZE
bellard712e7872005-04-28 21:09:32 +0000190 {
191 unsigned int sectorsize = 512;
192 if (!ioctl(fd, DIOCGSECTORSIZE, &sectorsize) &&
193 sectorsize > bufsize)
194 bufsize = sectorsize;
195 }
bellard7674e7b2005-04-26 21:59:26 +0000196#endif
bellard3b0d4f62005-10-30 18:30:10 +0000197#ifdef CONFIG_COCOA
198 u_int32_t blockSize = 512;
199 if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) {
200 bufsize = blockSize;
201 }
202#endif
bellard712e7872005-04-28 21:09:32 +0000203 buf = qemu_malloc(bufsize);
204 if (!buf)
205 return NULL;
206 ret = read(fd, buf, bufsize);
207 if (ret < 0) {
208 close(fd);
209 qemu_free(buf);
210 return NULL;
211 }
bellardea2384d2004-08-01 21:59:26 +0000212 close(fd);
bellardea2384d2004-08-01 21:59:26 +0000213 }
bellardea2384d2004-08-01 21:59:26 +0000214
215 drv = NULL;
216 score_max = 0;
217 for(drv1 = first_drv; drv1 != NULL; drv1 = drv1->next) {
218 score = drv1->bdrv_probe(buf, ret, filename);
219 if (score > score_max) {
220 score_max = score;
221 drv = drv1;
222 }
223 }
bellard712e7872005-04-28 21:09:32 +0000224 qemu_free(buf);
bellardea2384d2004-08-01 21:59:26 +0000225 return drv;
226}
227
bellardb3380822004-03-14 21:38:54 +0000228int bdrv_open(BlockDriverState *bs, const char *filename, int snapshot)
229{
bellard3b0d4f62005-10-30 18:30:10 +0000230#ifdef CONFIG_COCOA
231 if ( strncmp( filename, "/dev/cdrom", 10 ) == 0 ) {
232 kern_return_t kernResult;
233 io_iterator_t mediaIterator;
234 char bsdPath[ MAXPATHLEN ];
235 int fd;
236
237 kernResult = FindEjectableCDMedia( &mediaIterator );
238 kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) );
239
240 if ( bsdPath[ 0 ] != '\0' ) {
241 strcat(bsdPath,"s0");
242 /* some CDs don't have a partition 0 */
243 fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE);
244 if (fd < 0) {
245 bsdPath[strlen(bsdPath)-1] = '1';
246 } else {
247 close(fd);
248 }
249 filename = bsdPath;
250 }
251
252 if ( mediaIterator )
253 IOObjectRelease( mediaIterator );
254 }
255#endif
bellardea2384d2004-08-01 21:59:26 +0000256 return bdrv_open2(bs, filename, snapshot, NULL);
257}
bellardfc01f7e2003-06-30 10:03:06 +0000258
bellardea2384d2004-08-01 21:59:26 +0000259int bdrv_open2(BlockDriverState *bs, const char *filename, int snapshot,
260 BlockDriver *drv)
261{
262 int ret;
263 char tmp_filename[1024];
bellard33e39632003-07-06 17:15:21 +0000264
bellardea2384d2004-08-01 21:59:26 +0000265 bs->read_only = 0;
266 bs->is_temporary = 0;
267 bs->encrypted = 0;
bellard712e7872005-04-28 21:09:32 +0000268
bellardea2384d2004-08-01 21:59:26 +0000269 if (snapshot) {
270 BlockDriverState *bs1;
271 int64_t total_size;
272
273 /* if snapshot, we create a temporary backing file and open it
274 instead of opening 'filename' directly */
275
276 /* if there is a backing file, use it */
277 bs1 = bdrv_new("");
278 if (!bs1) {
279 return -1;
280 }
281 if (bdrv_open(bs1, filename, 0) < 0) {
282 bdrv_delete(bs1);
283 return -1;
284 }
285 total_size = bs1->total_sectors;
286 bdrv_delete(bs1);
287
288 get_tmp_filename(tmp_filename, sizeof(tmp_filename));
289 /* XXX: use cow for linux as it is more efficient ? */
290 if (bdrv_create(&bdrv_qcow, tmp_filename,
291 total_size, filename, 0) < 0) {
292 return -1;
293 }
294 filename = tmp_filename;
295 bs->is_temporary = 1;
296 }
bellard712e7872005-04-28 21:09:32 +0000297
bellardea2384d2004-08-01 21:59:26 +0000298 pstrcpy(bs->filename, sizeof(bs->filename), filename);
299 if (!drv) {
300 drv = find_image_format(filename);
301 if (!drv)
302 return -1;
303 }
304 bs->drv = drv;
305 bs->opaque = qemu_mallocz(drv->instance_size);
306 if (bs->opaque == NULL && drv->instance_size > 0)
307 return -1;
308
309 ret = drv->bdrv_open(bs, filename);
310 if (ret < 0) {
311 qemu_free(bs->opaque);
312 return -1;
313 }
314#ifndef _WIN32
315 if (bs->is_temporary) {
316 unlink(filename);
317 }
318#endif
319 if (bs->backing_file[0] != '\0' && drv->bdrv_is_allocated) {
320 /* if there is a backing file, use it */
321 bs->backing_hd = bdrv_new("");
322 if (!bs->backing_hd) {
323 fail:
324 bdrv_close(bs);
325 return -1;
326 }
327 if (bdrv_open(bs->backing_hd, bs->backing_file, 0) < 0)
328 goto fail;
329 }
330
bellardb3380822004-03-14 21:38:54 +0000331 bs->inserted = 1;
332
333 /* call the change callback */
334 if (bs->change_cb)
335 bs->change_cb(bs->change_opaque);
336
337 return 0;
bellardfc01f7e2003-06-30 10:03:06 +0000338}
339
340void bdrv_close(BlockDriverState *bs)
341{
bellardb3380822004-03-14 21:38:54 +0000342 if (bs->inserted) {
bellardea2384d2004-08-01 21:59:26 +0000343 if (bs->backing_hd)
344 bdrv_delete(bs->backing_hd);
345 bs->drv->bdrv_close(bs);
346 qemu_free(bs->opaque);
347#ifdef _WIN32
348 if (bs->is_temporary) {
349 unlink(bs->filename);
350 }
bellard67b915a2004-03-31 23:37:16 +0000351#endif
bellardea2384d2004-08-01 21:59:26 +0000352 bs->opaque = NULL;
353 bs->drv = NULL;
bellardb3380822004-03-14 21:38:54 +0000354 bs->inserted = 0;
355
356 /* call the change callback */
357 if (bs->change_cb)
358 bs->change_cb(bs->change_opaque);
359 }
360}
361
362void bdrv_delete(BlockDriverState *bs)
363{
bellardea2384d2004-08-01 21:59:26 +0000364 /* XXX: remove the driver list */
bellardb3380822004-03-14 21:38:54 +0000365 bdrv_close(bs);
366 qemu_free(bs);
bellardfc01f7e2003-06-30 10:03:06 +0000367}
368
bellard33e39632003-07-06 17:15:21 +0000369/* commit COW file into the raw image */
370int bdrv_commit(BlockDriverState *bs)
371{
372 int64_t i;
bellardea2384d2004-08-01 21:59:26 +0000373 int n, j;
374 unsigned char sector[512];
bellard33e39632003-07-06 17:15:21 +0000375
bellardb3380822004-03-14 21:38:54 +0000376 if (!bs->inserted)
bellardea2384d2004-08-01 21:59:26 +0000377 return -ENOENT;
bellard33e39632003-07-06 17:15:21 +0000378
379 if (bs->read_only) {
bellardea2384d2004-08-01 21:59:26 +0000380 return -EACCES;
bellard33e39632003-07-06 17:15:21 +0000381 }
382
bellardea2384d2004-08-01 21:59:26 +0000383 if (!bs->backing_hd) {
384 return -ENOTSUP;
bellard33e39632003-07-06 17:15:21 +0000385 }
bellardea2384d2004-08-01 21:59:26 +0000386
387 for (i = 0; i < bs->total_sectors;) {
388 if (bs->drv->bdrv_is_allocated(bs, i, 65536, &n)) {
389 for(j = 0; j < n; j++) {
390 if (bdrv_read(bs, i, sector, 1) != 0) {
391 return -EIO;
392 }
393
394 if (bdrv_write(bs->backing_hd, i, sector, 1) != 0) {
395 return -EIO;
396 }
397 i++;
398 }
399 } else {
400 i += n;
401 }
402 }
bellard95389c82005-12-18 18:28:15 +0000403
404 if (bs->drv->bdrv_make_empty)
405 return bs->drv->bdrv_make_empty(bs);
406
bellard33e39632003-07-06 17:15:21 +0000407 return 0;
408}
409
bellardfc01f7e2003-06-30 10:03:06 +0000410/* return -1 if error */
411int bdrv_read(BlockDriverState *bs, int64_t sector_num,
412 uint8_t *buf, int nb_sectors)
413{
bellardea2384d2004-08-01 21:59:26 +0000414 int ret, n;
415 BlockDriver *drv = bs->drv;
416
bellardb3380822004-03-14 21:38:54 +0000417 if (!bs->inserted)
418 return -1;
419
bellard33e39632003-07-06 17:15:21 +0000420 while (nb_sectors > 0) {
bellardea2384d2004-08-01 21:59:26 +0000421 if (sector_num == 0 && bs->boot_sector_enabled) {
bellardcf989512004-02-16 21:56:36 +0000422 memcpy(buf, bs->boot_sector_data, 512);
423 n = 1;
bellardea2384d2004-08-01 21:59:26 +0000424 } else if (bs->backing_hd) {
425 if (drv->bdrv_is_allocated(bs, sector_num, nb_sectors, &n)) {
426 ret = drv->bdrv_read(bs, sector_num, buf, n);
427 if (ret < 0)
428 return -1;
429 } else {
430 /* read from the base image */
431 ret = bdrv_read(bs->backing_hd, sector_num, buf, n);
432 if (ret < 0)
433 return -1;
bellard33e39632003-07-06 17:15:21 +0000434 }
bellardea2384d2004-08-01 21:59:26 +0000435 } else {
436 ret = drv->bdrv_read(bs, sector_num, buf, nb_sectors);
437 if (ret < 0)
438 return -1;
439 /* no need to loop */
440 break;
bellard33e39632003-07-06 17:15:21 +0000441 }
442 nb_sectors -= n;
443 sector_num += n;
444 buf += n * 512;
445 }
446 return 0;
bellardfc01f7e2003-06-30 10:03:06 +0000447}
448
449/* return -1 if error */
450int bdrv_write(BlockDriverState *bs, int64_t sector_num,
451 const uint8_t *buf, int nb_sectors)
452{
bellardb3380822004-03-14 21:38:54 +0000453 if (!bs->inserted)
454 return -1;
bellard0849bf02003-06-30 23:17:31 +0000455 if (bs->read_only)
456 return -1;
bellard79639d42005-11-26 10:58:41 +0000457 if (sector_num == 0 && bs->boot_sector_enabled && nb_sectors > 0) {
458 memcpy(bs->boot_sector_data, buf, 512);
459 }
bellardea2384d2004-08-01 21:59:26 +0000460 return bs->drv->bdrv_write(bs, sector_num, buf, nb_sectors);
bellardfc01f7e2003-06-30 10:03:06 +0000461}
462
463void bdrv_get_geometry(BlockDriverState *bs, int64_t *nb_sectors_ptr)
464{
465 *nb_sectors_ptr = bs->total_sectors;
466}
bellardcf989512004-02-16 21:56:36 +0000467
468/* force a given boot sector. */
469void bdrv_set_boot_sector(BlockDriverState *bs, const uint8_t *data, int size)
470{
471 bs->boot_sector_enabled = 1;
472 if (size > 512)
473 size = 512;
474 memcpy(bs->boot_sector_data, data, size);
475 memset(bs->boot_sector_data + size, 0, 512 - size);
476}
bellardb3380822004-03-14 21:38:54 +0000477
478void bdrv_set_geometry_hint(BlockDriverState *bs,
479 int cyls, int heads, int secs)
480{
481 bs->cyls = cyls;
482 bs->heads = heads;
483 bs->secs = secs;
484}
485
486void bdrv_set_type_hint(BlockDriverState *bs, int type)
487{
488 bs->type = type;
489 bs->removable = ((type == BDRV_TYPE_CDROM ||
490 type == BDRV_TYPE_FLOPPY));
491}
492
bellard46d47672004-11-16 01:45:27 +0000493void bdrv_set_translation_hint(BlockDriverState *bs, int translation)
494{
495 bs->translation = translation;
496}
497
bellardb3380822004-03-14 21:38:54 +0000498void bdrv_get_geometry_hint(BlockDriverState *bs,
499 int *pcyls, int *pheads, int *psecs)
500{
501 *pcyls = bs->cyls;
502 *pheads = bs->heads;
503 *psecs = bs->secs;
504}
505
506int bdrv_get_type_hint(BlockDriverState *bs)
507{
508 return bs->type;
509}
510
bellard46d47672004-11-16 01:45:27 +0000511int bdrv_get_translation_hint(BlockDriverState *bs)
512{
513 return bs->translation;
514}
515
bellardb3380822004-03-14 21:38:54 +0000516int bdrv_is_removable(BlockDriverState *bs)
517{
518 return bs->removable;
519}
520
521int bdrv_is_read_only(BlockDriverState *bs)
522{
523 return bs->read_only;
524}
525
526int bdrv_is_inserted(BlockDriverState *bs)
527{
528 return bs->inserted;
529}
530
531int bdrv_is_locked(BlockDriverState *bs)
532{
533 return bs->locked;
534}
535
536void bdrv_set_locked(BlockDriverState *bs, int locked)
537{
538 bs->locked = locked;
539}
540
541void bdrv_set_change_cb(BlockDriverState *bs,
542 void (*change_cb)(void *opaque), void *opaque)
543{
544 bs->change_cb = change_cb;
545 bs->change_opaque = opaque;
546}
547
bellardea2384d2004-08-01 21:59:26 +0000548int bdrv_is_encrypted(BlockDriverState *bs)
549{
550 if (bs->backing_hd && bs->backing_hd->encrypted)
551 return 1;
552 return bs->encrypted;
553}
554
555int bdrv_set_key(BlockDriverState *bs, const char *key)
556{
557 int ret;
558 if (bs->backing_hd && bs->backing_hd->encrypted) {
559 ret = bdrv_set_key(bs->backing_hd, key);
560 if (ret < 0)
561 return ret;
562 if (!bs->encrypted)
563 return 0;
564 }
565 if (!bs->encrypted || !bs->drv || !bs->drv->bdrv_set_key)
566 return -1;
567 return bs->drv->bdrv_set_key(bs, key);
568}
569
570void bdrv_get_format(BlockDriverState *bs, char *buf, int buf_size)
571{
572 if (!bs->inserted || !bs->drv) {
573 buf[0] = '\0';
574 } else {
575 pstrcpy(buf, buf_size, bs->drv->format_name);
576 }
577}
578
579void bdrv_iterate_format(void (*it)(void *opaque, const char *name),
580 void *opaque)
581{
582 BlockDriver *drv;
583
584 for (drv = first_drv; drv != NULL; drv = drv->next) {
585 it(opaque, drv->format_name);
586 }
587}
588
bellardb3380822004-03-14 21:38:54 +0000589BlockDriverState *bdrv_find(const char *name)
590{
591 BlockDriverState *bs;
592
593 for (bs = bdrv_first; bs != NULL; bs = bs->next) {
594 if (!strcmp(name, bs->device_name))
595 return bs;
596 }
597 return NULL;
598}
599
bellard81d09122004-07-14 17:21:37 +0000600void bdrv_iterate(void (*it)(void *opaque, const char *name), void *opaque)
601{
602 BlockDriverState *bs;
603
604 for (bs = bdrv_first; bs != NULL; bs = bs->next) {
605 it(opaque, bs->device_name);
606 }
607}
608
bellardea2384d2004-08-01 21:59:26 +0000609const char *bdrv_get_device_name(BlockDriverState *bs)
610{
611 return bs->device_name;
612}
613
bellardb3380822004-03-14 21:38:54 +0000614void bdrv_info(void)
615{
616 BlockDriverState *bs;
617
618 for (bs = bdrv_first; bs != NULL; bs = bs->next) {
619 term_printf("%s:", bs->device_name);
620 term_printf(" type=");
621 switch(bs->type) {
622 case BDRV_TYPE_HD:
623 term_printf("hd");
624 break;
625 case BDRV_TYPE_CDROM:
626 term_printf("cdrom");
627 break;
628 case BDRV_TYPE_FLOPPY:
629 term_printf("floppy");
630 break;
631 }
632 term_printf(" removable=%d", bs->removable);
633 if (bs->removable) {
634 term_printf(" locked=%d", bs->locked);
635 }
636 if (bs->inserted) {
637 term_printf(" file=%s", bs->filename);
bellardea2384d2004-08-01 21:59:26 +0000638 if (bs->backing_file[0] != '\0')
639 term_printf(" backing_file=%s", bs->backing_file);
bellardb3380822004-03-14 21:38:54 +0000640 term_printf(" ro=%d", bs->read_only);
bellardea2384d2004-08-01 21:59:26 +0000641 term_printf(" drv=%s", bs->drv->format_name);
642 if (bs->encrypted)
643 term_printf(" encrypted");
bellardb3380822004-03-14 21:38:54 +0000644 } else {
645 term_printf(" [not inserted]");
646 }
647 term_printf("\n");
648 }
649}
bellardea2384d2004-08-01 21:59:26 +0000650
651
652/**************************************************************/
653/* RAW block driver */
654
655typedef struct BDRVRawState {
656 int fd;
657} BDRVRawState;
658
659static int raw_probe(const uint8_t *buf, int buf_size, const char *filename)
660{
661 return 1; /* maybe */
662}
663
664static int raw_open(BlockDriverState *bs, const char *filename)
665{
666 BDRVRawState *s = bs->opaque;
667 int fd;
668 int64_t size;
bellarde5484d32005-04-27 19:55:01 +0000669#ifdef _BSD
670 struct stat sb;
671#endif
bellardea2384d2004-08-01 21:59:26 +0000672
673 fd = open(filename, O_RDWR | O_BINARY | O_LARGEFILE);
674 if (fd < 0) {
675 fd = open(filename, O_RDONLY | O_BINARY | O_LARGEFILE);
676 if (fd < 0)
677 return -1;
678 bs->read_only = 1;
679 }
bellard7674e7b2005-04-26 21:59:26 +0000680#ifdef _BSD
bellarde5484d32005-04-27 19:55:01 +0000681 if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
bellard7674e7b2005-04-26 21:59:26 +0000682#ifdef DIOCGMEDIASIZE
bellarde5484d32005-04-27 19:55:01 +0000683 if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
bellard7674e7b2005-04-26 21:59:26 +0000684#endif
bellard3b0d4f62005-10-30 18:30:10 +0000685#ifdef CONFIG_COCOA
686 size = LONG_LONG_MAX;
687#else
688 size = lseek(fd, 0LL, SEEK_END);
689#endif
bellard7674e7b2005-04-26 21:59:26 +0000690 } else
691#endif
692 {
693 size = lseek(fd, 0, SEEK_END);
694 }
bellardc747cd12005-04-26 21:47:02 +0000695#ifdef _WIN32
696 /* On Windows hosts it can happen that we're unable to get file size
697 for CD-ROM raw device (it's inherent limitation of the CDFS driver). */
698 if (size == -1)
699 size = LONG_LONG_MAX;
700#endif
bellardea2384d2004-08-01 21:59:26 +0000701 bs->total_sectors = size / 512;
702 s->fd = fd;
703 return 0;
704}
705
706static int raw_read(BlockDriverState *bs, int64_t sector_num,
707 uint8_t *buf, int nb_sectors)
708{
709 BDRVRawState *s = bs->opaque;
710 int ret;
711
bellardd5249392004-08-03 21:14:23 +0000712 lseek(s->fd, sector_num * 512, SEEK_SET);
bellardea2384d2004-08-01 21:59:26 +0000713 ret = read(s->fd, buf, nb_sectors * 512);
714 if (ret != nb_sectors * 512)
715 return -1;
716 return 0;
717}
718
719static int raw_write(BlockDriverState *bs, int64_t sector_num,
720 const uint8_t *buf, int nb_sectors)
721{
722 BDRVRawState *s = bs->opaque;
723 int ret;
724
bellardd5249392004-08-03 21:14:23 +0000725 lseek(s->fd, sector_num * 512, SEEK_SET);
bellardea2384d2004-08-01 21:59:26 +0000726 ret = write(s->fd, buf, nb_sectors * 512);
727 if (ret != nb_sectors * 512)
728 return -1;
729 return 0;
730}
731
bellarde2731ad2004-09-18 19:32:11 +0000732static void raw_close(BlockDriverState *bs)
bellardea2384d2004-08-01 21:59:26 +0000733{
734 BDRVRawState *s = bs->opaque;
735 close(s->fd);
736}
737
738static int raw_create(const char *filename, int64_t total_size,
739 const char *backing_file, int flags)
740{
741 int fd;
742
743 if (flags || backing_file)
744 return -ENOTSUP;
745
746 fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY | O_LARGEFILE,
747 0644);
748 if (fd < 0)
749 return -EIO;
bellardd5249392004-08-03 21:14:23 +0000750 ftruncate(fd, total_size * 512);
bellardea2384d2004-08-01 21:59:26 +0000751 close(fd);
752 return 0;
753}
754
755BlockDriver bdrv_raw = {
756 "raw",
757 sizeof(BDRVRawState),
758 raw_probe,
759 raw_open,
760 raw_read,
761 raw_write,
762 raw_close,
763 raw_create,
764};
765
766void bdrv_init(void)
767{
768 bdrv_register(&bdrv_raw);
769#ifndef _WIN32
770 bdrv_register(&bdrv_cow);
771#endif
772 bdrv_register(&bdrv_qcow);
773 bdrv_register(&bdrv_vmdk);
bellard3c565212004-09-29 21:29:14 +0000774 bdrv_register(&bdrv_cloop);
bellard585d0ed2004-12-12 11:24:44 +0000775 bdrv_register(&bdrv_dmg);
bellarda8753c32005-04-26 21:34:00 +0000776 bdrv_register(&bdrv_bochs);
bellard6a0f9e82005-04-27 20:17:58 +0000777 bdrv_register(&bdrv_vpc);
bellard712e7872005-04-28 21:09:32 +0000778 bdrv_register(&bdrv_vvfat);
bellardea2384d2004-08-01 21:59:26 +0000779}