2
* Block driver for RAW files (posix)
4
* Copyright (c) 2006 Fabrice Bellard
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:
13
* The above copyright notice and this permission notice shall be included in
14
* all copies or substantial portions of the Software.
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
24
#include "qemu-common.h"
25
#include "qemu-timer.h"
26
#include "qemu-char.h"
28
#include "block_int.h"
30
#include "block/raw-posix-aio.h"
34
#include <sys/param.h>
35
#include <IOKit/IOKitLib.h>
36
#include <IOKit/IOBSD.h>
37
#include <IOKit/storage/IOMediaBSDClient.h>
38
#include <IOKit/storage/IOMedia.h>
39
#include <IOKit/storage/IOCDMedia.h>
40
//#include <IOKit/storage/IOCDTypes.h>
41
#include <CoreFoundation/CoreFoundation.h>
45
#define _POSIX_PTHREAD_SEMANTICS 1
49
#include <sys/types.h>
51
#include <sys/ioctl.h>
52
#include <sys/param.h>
53
#include <linux/cdrom.h>
56
#if defined (__FreeBSD__) || defined(__FreeBSD_kernel__)
62
#include <sys/ioctl.h>
63
#include <sys/disklabel.h>
68
#include <sys/ioctl.h>
69
#include <sys/disklabel.h>
75
#include <sys/ioctl.h>
76
#include <sys/diskslice.h>
83
//#define DEBUG_FLOPPY
86
#if defined(DEBUG_BLOCK)
87
#define DEBUG_BLOCK_PRINT(formatCstr, ...) do { if (qemu_log_enabled()) \
88
{ qemu_log(formatCstr, ## __VA_ARGS__); qemu_log_flush(); } } while (0)
90
#define DEBUG_BLOCK_PRINT(formatCstr, ...)
93
/* OS X does not have O_DSYNC */
96
#define O_DSYNC O_SYNC
97
#elif defined(O_FSYNC)
98
#define O_DSYNC O_FSYNC
102
/* Approximate O_DIRECT with O_DSYNC if O_DIRECT isn't available */
104
#define O_DIRECT O_DSYNC
111
/* if the FD is not accessed during that time (in ns), we try to
112
reopen it to see if the disk has been changed */
113
#define FD_OPEN_TIMEOUT (1000000000)
115
#define MAX_BLOCKSIZE 4096
117
typedef struct BDRVRawState {
121
#if defined(__linux__)
122
/* linux floppy specific */
123
int64_t fd_open_time;
124
int64_t fd_error_time;
126
int fd_media_changed;
128
#ifdef CONFIG_LINUX_AIO
132
uint8_t *aligned_buf;
133
unsigned aligned_buf_size;
139
static int fd_open(BlockDriverState *bs);
140
static int64_t raw_getlength(BlockDriverState *bs);
142
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
143
static int cdrom_reopen(BlockDriverState *bs);
146
#if defined(__NetBSD__)
147
static int raw_normalize_devicepath(const char **filename)
149
static char namebuf[PATH_MAX];
150
const char *dp, *fname;
154
dp = strrchr(fname, '/');
155
if (lstat(fname, &sb) < 0) {
156
fprintf(stderr, "%s: stat failed: %s\n",
157
fname, strerror(errno));
161
if (!S_ISBLK(sb.st_mode)) {
166
snprintf(namebuf, PATH_MAX, "r%s", fname);
168
snprintf(namebuf, PATH_MAX, "%.*s/r%s",
169
(int)(dp - fname), fname, dp + 1);
171
fprintf(stderr, "%s is a block device", fname);
173
fprintf(stderr, ", using %s\n", *filename);
178
static int raw_normalize_devicepath(const char **filename)
184
static int raw_open_common(BlockDriverState *bs, const char *filename,
185
int bdrv_flags, int open_flags)
187
BDRVRawState *s = bs->opaque;
190
ret = raw_normalize_devicepath(&filename);
195
s->open_flags = open_flags | O_BINARY;
196
s->open_flags &= ~O_ACCMODE;
197
if (bdrv_flags & BDRV_O_RDWR) {
198
s->open_flags |= O_RDWR;
200
s->open_flags |= O_RDONLY;
203
/* Use O_DSYNC for write-through caching, no flags for write-back caching,
204
* and O_DIRECT for no caching. */
205
if ((bdrv_flags & BDRV_O_NOCACHE))
206
s->open_flags |= O_DIRECT;
207
if (!(bdrv_flags & BDRV_O_CACHE_WB))
208
s->open_flags |= O_DSYNC;
211
fd = qemu_open(filename, s->open_flags, 0644);
219
s->aligned_buf = NULL;
221
if ((bdrv_flags & BDRV_O_NOCACHE)) {
223
* Allocate a buffer for read/modify/write cycles. Chose the size
224
* pessimistically as we don't know the block size yet.
226
s->aligned_buf_size = 32 * MAX_BLOCKSIZE;
227
s->aligned_buf = qemu_memalign(MAX_BLOCKSIZE, s->aligned_buf_size);
228
if (s->aligned_buf == NULL) {
233
/* We're falling back to POSIX AIO in some cases so init always */
234
if (paio_init() < 0) {
238
#ifdef CONFIG_LINUX_AIO
240
* Currently Linux do AIO only for files opened with O_DIRECT
241
* specified so check NOCACHE flag too
243
if ((bdrv_flags & (BDRV_O_NOCACHE|BDRV_O_NATIVE_AIO)) ==
244
(BDRV_O_NOCACHE|BDRV_O_NATIVE_AIO)) {
246
s->aio_ctx = laio_init();
254
#ifdef CONFIG_LINUX_AIO
260
if (platform_test_xfs_fd(s->fd)) {
268
qemu_vfree(s->aligned_buf);
274
static int raw_open(BlockDriverState *bs, const char *filename, int flags)
276
BDRVRawState *s = bs->opaque;
278
s->type = FTYPE_FILE;
279
return raw_open_common(bs, filename, flags, 0);
282
/* XXX: use host sector size if necessary with:
283
#ifdef DIOCGSECTORSIZE
285
unsigned int sectorsize = 512;
286
if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) &&
287
sectorsize > bufsize)
288
bufsize = sectorsize;
292
uint32_t blockSize = 512;
293
if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) {
300
* Check if all memory in this vector is sector aligned.
302
static int qiov_is_aligned(BlockDriverState *bs, QEMUIOVector *qiov)
306
for (i = 0; i < qiov->niov; i++) {
307
if ((uintptr_t) qiov->iov[i].iov_base % bs->buffer_alignment) {
315
static BlockDriverAIOCB *raw_aio_submit(BlockDriverState *bs,
316
int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
317
BlockDriverCompletionFunc *cb, void *opaque, int type)
319
BDRVRawState *s = bs->opaque;
325
* If O_DIRECT is used the buffer needs to be aligned on a sector
326
* boundary. Check if this is the case or tell the low-level
327
* driver that it needs to copy the buffer.
329
if (s->aligned_buf) {
330
if (!qiov_is_aligned(bs, qiov)) {
331
type |= QEMU_AIO_MISALIGNED;
332
#ifdef CONFIG_LINUX_AIO
333
} else if (s->use_aio) {
334
return laio_submit(bs, s->aio_ctx, s->fd, sector_num, qiov,
335
nb_sectors, cb, opaque, type);
340
return paio_submit(bs, s->fd, sector_num, qiov, nb_sectors,
344
static BlockDriverAIOCB *raw_aio_readv(BlockDriverState *bs,
345
int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
346
BlockDriverCompletionFunc *cb, void *opaque)
348
return raw_aio_submit(bs, sector_num, qiov, nb_sectors,
349
cb, opaque, QEMU_AIO_READ);
352
static BlockDriverAIOCB *raw_aio_writev(BlockDriverState *bs,
353
int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
354
BlockDriverCompletionFunc *cb, void *opaque)
356
return raw_aio_submit(bs, sector_num, qiov, nb_sectors,
357
cb, opaque, QEMU_AIO_WRITE);
360
static BlockDriverAIOCB *raw_aio_flush(BlockDriverState *bs,
361
BlockDriverCompletionFunc *cb, void *opaque)
363
BDRVRawState *s = bs->opaque;
368
return paio_submit(bs, s->fd, 0, NULL, 0, cb, opaque, QEMU_AIO_FLUSH);
371
static void raw_close(BlockDriverState *bs)
373
BDRVRawState *s = bs->opaque;
377
if (s->aligned_buf != NULL)
378
qemu_vfree(s->aligned_buf);
382
static int raw_truncate(BlockDriverState *bs, int64_t offset)
384
BDRVRawState *s = bs->opaque;
387
if (fstat(s->fd, &st)) {
391
if (S_ISREG(st.st_mode)) {
392
if (ftruncate(s->fd, offset) < 0) {
395
} else if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) {
396
if (offset > raw_getlength(bs)) {
407
static int64_t raw_getlength(BlockDriverState *bs)
409
BDRVRawState *s = bs->opaque;
415
if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) {
418
if (ioctl(fd, DIOCGDINFO, &dl))
420
return (uint64_t)dl.d_secsize *
421
dl.d_partitions[DISKPART(st.st_rdev)].p_size;
425
#elif defined(__NetBSD__)
426
static int64_t raw_getlength(BlockDriverState *bs)
428
BDRVRawState *s = bs->opaque;
434
if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) {
435
struct dkwedge_info dkw;
437
if (ioctl(fd, DIOCGWEDGEINFO, &dkw) != -1) {
438
return dkw.dkw_size * 512;
442
if (ioctl(fd, DIOCGDINFO, &dl))
444
return (uint64_t)dl.d_secsize *
445
dl.d_partitions[DISKPART(st.st_rdev)].p_size;
450
#elif defined(__sun__)
451
static int64_t raw_getlength(BlockDriverState *bs)
453
BDRVRawState *s = bs->opaque;
454
struct dk_minfo minfo;
463
* Use the DKIOCGMEDIAINFO ioctl to read the size.
465
ret = ioctl(s->fd, DKIOCGMEDIAINFO, &minfo);
467
return minfo.dki_lbsize * minfo.dki_capacity;
471
* There are reports that lseek on some devices fails, but
472
* irc discussion said that contingency on contingency was overkill.
474
return lseek(s->fd, 0, SEEK_END);
476
#elif defined(CONFIG_BSD)
477
static int64_t raw_getlength(BlockDriverState *bs)
479
BDRVRawState *s = bs->opaque;
483
#if defined (__FreeBSD__) || defined(__FreeBSD_kernel__)
492
#if defined (__FreeBSD__) || defined(__FreeBSD_kernel__)
495
if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
496
#ifdef DIOCGMEDIASIZE
497
if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
498
#elif defined(DIOCGPART)
501
if (ioctl(fd, DIOCGPART, &pi) == 0)
502
size = pi.media_size;
509
size = LONG_LONG_MAX;
511
size = lseek(fd, 0LL, SEEK_END);
513
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
516
/* XXX FreeBSD acd returns UINT_MAX sectors for an empty drive */
517
if (size == 2048LL * (unsigned)-1)
519
/* XXX no disc? maybe we need to reopen... */
520
if (size <= 0 && !reopened && cdrom_reopen(bs) >= 0) {
527
size = lseek(fd, 0, SEEK_END);
532
static int64_t raw_getlength(BlockDriverState *bs)
534
BDRVRawState *s = bs->opaque;
542
return lseek(s->fd, 0, SEEK_END);
546
static int64_t raw_get_allocated_file_size(BlockDriverState *bs)
549
BDRVRawState *s = bs->opaque;
551
if (fstat(s->fd, &st) < 0) {
554
return (int64_t)st.st_blocks * 512;
557
static int raw_create(const char *filename, QEMUOptionParameter *options)
561
int64_t total_size = 0;
563
/* Read out options */
564
while (options && options->name) {
565
if (!strcmp(options->name, BLOCK_OPT_SIZE)) {
566
total_size = options->value.n / BDRV_SECTOR_SIZE;
571
fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
576
if (ftruncate(fd, total_size * BDRV_SECTOR_SIZE) != 0) {
579
if (close(fd) != 0) {
587
static int xfs_discard(BDRVRawState *s, int64_t sector_num, int nb_sectors)
589
struct xfs_flock64 fl;
591
memset(&fl, 0, sizeof(fl));
592
fl.l_whence = SEEK_SET;
593
fl.l_start = sector_num << 9;
594
fl.l_len = (int64_t)nb_sectors << 9;
596
if (xfsctl(NULL, s->fd, XFS_IOC_UNRESVSP64, &fl) < 0) {
597
DEBUG_BLOCK_PRINT("cannot punch hole (%s)\n", strerror(errno));
605
static coroutine_fn int raw_co_discard(BlockDriverState *bs,
606
int64_t sector_num, int nb_sectors)
609
BDRVRawState *s = bs->opaque;
612
return xfs_discard(s, sector_num, nb_sectors);
619
static QEMUOptionParameter raw_create_options[] = {
621
.name = BLOCK_OPT_SIZE,
623
.help = "Virtual disk size"
628
static BlockDriver bdrv_file = {
629
.format_name = "file",
630
.protocol_name = "file",
631
.instance_size = sizeof(BDRVRawState),
632
.bdrv_probe = NULL, /* no probe for protocols */
633
.bdrv_file_open = raw_open,
634
.bdrv_close = raw_close,
635
.bdrv_create = raw_create,
636
.bdrv_co_discard = raw_co_discard,
638
.bdrv_aio_readv = raw_aio_readv,
639
.bdrv_aio_writev = raw_aio_writev,
640
.bdrv_aio_flush = raw_aio_flush,
642
.bdrv_truncate = raw_truncate,
643
.bdrv_getlength = raw_getlength,
644
.bdrv_get_allocated_file_size
645
= raw_get_allocated_file_size,
647
.create_options = raw_create_options,
650
/***********************************************/
654
static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator );
655
static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize );
657
kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator )
659
kern_return_t kernResult;
660
mach_port_t masterPort;
661
CFMutableDictionaryRef classesToMatch;
663
kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort );
664
if ( KERN_SUCCESS != kernResult ) {
665
printf( "IOMasterPort returned %d\n", kernResult );
668
classesToMatch = IOServiceMatching( kIOCDMediaClass );
669
if ( classesToMatch == NULL ) {
670
printf( "IOServiceMatching returned a NULL dictionary.\n" );
672
CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue );
674
kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator );
675
if ( KERN_SUCCESS != kernResult )
677
printf( "IOServiceGetMatchingServices returned %d\n", kernResult );
683
kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize )
685
io_object_t nextMedia;
686
kern_return_t kernResult = KERN_FAILURE;
688
nextMedia = IOIteratorNext( mediaIterator );
691
CFTypeRef bsdPathAsCFString;
692
bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 );
693
if ( bsdPathAsCFString ) {
694
size_t devPathLength;
695
strcpy( bsdPath, _PATH_DEV );
696
strcat( bsdPath, "r" );
697
devPathLength = strlen( bsdPath );
698
if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) {
699
kernResult = KERN_SUCCESS;
701
CFRelease( bsdPathAsCFString );
703
IOObjectRelease( nextMedia );
711
static int hdev_probe_device(const char *filename)
715
/* allow a dedicated CD-ROM driver to match with a higher priority */
716
if (strstart(filename, "/dev/cdrom", NULL))
719
if (stat(filename, &st) >= 0 &&
720
(S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode))) {
727
static int hdev_open(BlockDriverState *bs, const char *filename, int flags)
729
BDRVRawState *s = bs->opaque;
732
if (strstart(filename, "/dev/cdrom", NULL)) {
733
kern_return_t kernResult;
734
io_iterator_t mediaIterator;
735
char bsdPath[ MAXPATHLEN ];
738
kernResult = FindEjectableCDMedia( &mediaIterator );
739
kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) );
741
if ( bsdPath[ 0 ] != '\0' ) {
742
strcat(bsdPath,"s0");
743
/* some CDs don't have a partition 0 */
744
fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE);
746
bsdPath[strlen(bsdPath)-1] = '1';
754
IOObjectRelease( mediaIterator );
758
s->type = FTYPE_FILE;
759
#if defined(__linux__)
761
char resolved_path[ MAXPATHLEN ], *temp;
763
temp = realpath(filename, resolved_path);
764
if (temp && strstart(temp, "/dev/sg", NULL)) {
770
return raw_open_common(bs, filename, flags, 0);
773
#if defined(__linux__)
774
/* Note: we do not have a reliable method to detect if the floppy is
775
present. The current method is to try to open the floppy at every
776
I/O and to keep it opened during a few hundreds of ms. */
777
static int fd_open(BlockDriverState *bs)
779
BDRVRawState *s = bs->opaque;
780
int last_media_present;
782
if (s->type != FTYPE_FD)
784
last_media_present = (s->fd >= 0);
786
(get_clock() - s->fd_open_time) >= FD_OPEN_TIMEOUT) {
790
printf("Floppy closed\n");
794
if (s->fd_got_error &&
795
(get_clock() - s->fd_error_time) < FD_OPEN_TIMEOUT) {
797
printf("No floppy (open delayed)\n");
801
s->fd = open(bs->filename, s->open_flags & ~O_NONBLOCK);
803
s->fd_error_time = get_clock();
805
if (last_media_present)
806
s->fd_media_changed = 1;
808
printf("No floppy\n");
813
printf("Floppy opened\n");
816
if (!last_media_present)
817
s->fd_media_changed = 1;
818
s->fd_open_time = get_clock();
823
static int hdev_ioctl(BlockDriverState *bs, unsigned long int req, void *buf)
825
BDRVRawState *s = bs->opaque;
827
return ioctl(s->fd, req, buf);
830
static BlockDriverAIOCB *hdev_aio_ioctl(BlockDriverState *bs,
831
unsigned long int req, void *buf,
832
BlockDriverCompletionFunc *cb, void *opaque)
834
BDRVRawState *s = bs->opaque;
838
return paio_ioctl(bs, s->fd, req, buf, cb, opaque);
841
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
842
static int fd_open(BlockDriverState *bs)
844
BDRVRawState *s = bs->opaque;
846
/* this is just to ensure s->fd is sane (its called by io ops) */
851
#else /* !linux && !FreeBSD */
853
static int fd_open(BlockDriverState *bs)
858
#endif /* !linux && !FreeBSD */
860
static int hdev_create(const char *filename, QEMUOptionParameter *options)
864
struct stat stat_buf;
865
int64_t total_size = 0;
867
/* Read out options */
868
while (options && options->name) {
869
if (!strcmp(options->name, "size")) {
870
total_size = options->value.n / BDRV_SECTOR_SIZE;
875
fd = open(filename, O_WRONLY | O_BINARY);
879
if (fstat(fd, &stat_buf) < 0)
881
else if (!S_ISBLK(stat_buf.st_mode) && !S_ISCHR(stat_buf.st_mode))
883
else if (lseek(fd, 0, SEEK_END) < total_size * BDRV_SECTOR_SIZE)
890
static int hdev_has_zero_init(BlockDriverState *bs)
895
static BlockDriver bdrv_host_device = {
896
.format_name = "host_device",
897
.protocol_name = "host_device",
898
.instance_size = sizeof(BDRVRawState),
899
.bdrv_probe_device = hdev_probe_device,
900
.bdrv_file_open = hdev_open,
901
.bdrv_close = raw_close,
902
.bdrv_create = hdev_create,
903
.create_options = raw_create_options,
904
.bdrv_has_zero_init = hdev_has_zero_init,
906
.bdrv_aio_readv = raw_aio_readv,
907
.bdrv_aio_writev = raw_aio_writev,
908
.bdrv_aio_flush = raw_aio_flush,
910
.bdrv_truncate = raw_truncate,
911
.bdrv_getlength = raw_getlength,
912
.bdrv_get_allocated_file_size
913
= raw_get_allocated_file_size,
915
/* generic scsi device */
917
.bdrv_ioctl = hdev_ioctl,
918
.bdrv_aio_ioctl = hdev_aio_ioctl,
923
static int floppy_open(BlockDriverState *bs, const char *filename, int flags)
925
BDRVRawState *s = bs->opaque;
930
/* open will not fail even if no floppy is inserted, so add O_NONBLOCK */
931
ret = raw_open_common(bs, filename, flags, O_NONBLOCK);
935
/* close fd so that we can reopen it as needed */
938
s->fd_media_changed = 1;
943
static int floppy_probe_device(const char *filename)
947
struct floppy_struct fdparam;
950
if (strstart(filename, "/dev/fd", NULL))
953
fd = open(filename, O_RDONLY | O_NONBLOCK);
957
ret = fstat(fd, &st);
958
if (ret == -1 || !S_ISBLK(st.st_mode)) {
962
/* Attempt to detect via a floppy specific ioctl */
963
ret = ioctl(fd, FDGETPRM, &fdparam);
974
static int floppy_is_inserted(BlockDriverState *bs)
976
return fd_open(bs) >= 0;
979
static int floppy_media_changed(BlockDriverState *bs)
981
BDRVRawState *s = bs->opaque;
985
* XXX: we do not have a true media changed indication.
986
* It does not work if the floppy is changed without trying to read it.
989
ret = s->fd_media_changed;
990
s->fd_media_changed = 0;
992
printf("Floppy changed=%d\n", ret);
997
static void floppy_eject(BlockDriverState *bs, int eject_flag)
999
BDRVRawState *s = bs->opaque;
1006
fd = open(bs->filename, s->open_flags | O_NONBLOCK);
1008
if (ioctl(fd, FDEJECT, 0) < 0)
1014
static BlockDriver bdrv_host_floppy = {
1015
.format_name = "host_floppy",
1016
.protocol_name = "host_floppy",
1017
.instance_size = sizeof(BDRVRawState),
1018
.bdrv_probe_device = floppy_probe_device,
1019
.bdrv_file_open = floppy_open,
1020
.bdrv_close = raw_close,
1021
.bdrv_create = hdev_create,
1022
.create_options = raw_create_options,
1023
.bdrv_has_zero_init = hdev_has_zero_init,
1025
.bdrv_aio_readv = raw_aio_readv,
1026
.bdrv_aio_writev = raw_aio_writev,
1027
.bdrv_aio_flush = raw_aio_flush,
1029
.bdrv_truncate = raw_truncate,
1030
.bdrv_getlength = raw_getlength,
1031
.bdrv_get_allocated_file_size
1032
= raw_get_allocated_file_size,
1034
/* removable device support */
1035
.bdrv_is_inserted = floppy_is_inserted,
1036
.bdrv_media_changed = floppy_media_changed,
1037
.bdrv_eject = floppy_eject,
1040
static int cdrom_open(BlockDriverState *bs, const char *filename, int flags)
1042
BDRVRawState *s = bs->opaque;
1046
/* open will not fail even if no CD is inserted, so add O_NONBLOCK */
1047
return raw_open_common(bs, filename, flags, O_NONBLOCK);
1050
static int cdrom_probe_device(const char *filename)
1056
fd = open(filename, O_RDONLY | O_NONBLOCK);
1060
ret = fstat(fd, &st);
1061
if (ret == -1 || !S_ISBLK(st.st_mode)) {
1065
/* Attempt to detect via a CDROM specific ioctl */
1066
ret = ioctl(fd, CDROM_DRIVE_STATUS, CDSL_CURRENT);
1076
static int cdrom_is_inserted(BlockDriverState *bs)
1078
BDRVRawState *s = bs->opaque;
1081
ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT);
1082
if (ret == CDS_DISC_OK)
1087
static void cdrom_eject(BlockDriverState *bs, int eject_flag)
1089
BDRVRawState *s = bs->opaque;
1092
if (ioctl(s->fd, CDROMEJECT, NULL) < 0)
1093
perror("CDROMEJECT");
1095
if (ioctl(s->fd, CDROMCLOSETRAY, NULL) < 0)
1096
perror("CDROMEJECT");
1100
static void cdrom_lock_medium(BlockDriverState *bs, bool locked)
1102
BDRVRawState *s = bs->opaque;
1104
if (ioctl(s->fd, CDROM_LOCKDOOR, locked) < 0) {
1106
* Note: an error can happen if the distribution automatically
1109
/* perror("CDROM_LOCKDOOR"); */
1113
static BlockDriver bdrv_host_cdrom = {
1114
.format_name = "host_cdrom",
1115
.protocol_name = "host_cdrom",
1116
.instance_size = sizeof(BDRVRawState),
1117
.bdrv_probe_device = cdrom_probe_device,
1118
.bdrv_file_open = cdrom_open,
1119
.bdrv_close = raw_close,
1120
.bdrv_create = hdev_create,
1121
.create_options = raw_create_options,
1122
.bdrv_has_zero_init = hdev_has_zero_init,
1124
.bdrv_aio_readv = raw_aio_readv,
1125
.bdrv_aio_writev = raw_aio_writev,
1126
.bdrv_aio_flush = raw_aio_flush,
1128
.bdrv_truncate = raw_truncate,
1129
.bdrv_getlength = raw_getlength,
1130
.bdrv_get_allocated_file_size
1131
= raw_get_allocated_file_size,
1133
/* removable device support */
1134
.bdrv_is_inserted = cdrom_is_inserted,
1135
.bdrv_eject = cdrom_eject,
1136
.bdrv_lock_medium = cdrom_lock_medium,
1138
/* generic scsi device */
1139
.bdrv_ioctl = hdev_ioctl,
1140
.bdrv_aio_ioctl = hdev_aio_ioctl,
1142
#endif /* __linux__ */
1144
#if defined (__FreeBSD__) || defined(__FreeBSD_kernel__)
1145
static int cdrom_open(BlockDriverState *bs, const char *filename, int flags)
1147
BDRVRawState *s = bs->opaque;
1152
ret = raw_open_common(bs, filename, flags, 0);
1156
/* make sure the door isnt locked at this time */
1157
ioctl(s->fd, CDIOCALLOW);
1161
static int cdrom_probe_device(const char *filename)
1163
if (strstart(filename, "/dev/cd", NULL) ||
1164
strstart(filename, "/dev/acd", NULL))
1169
static int cdrom_reopen(BlockDriverState *bs)
1171
BDRVRawState *s = bs->opaque;
1175
* Force reread of possibly changed/newly loaded disc,
1176
* FreeBSD seems to not notice sometimes...
1180
fd = open(bs->filename, s->open_flags, 0644);
1187
/* make sure the door isnt locked at this time */
1188
ioctl(s->fd, CDIOCALLOW);
1192
static int cdrom_is_inserted(BlockDriverState *bs)
1194
return raw_getlength(bs) > 0;
1197
static void cdrom_eject(BlockDriverState *bs, int eject_flag)
1199
BDRVRawState *s = bs->opaque;
1204
(void) ioctl(s->fd, CDIOCALLOW);
1207
if (ioctl(s->fd, CDIOCEJECT) < 0)
1208
perror("CDIOCEJECT");
1210
if (ioctl(s->fd, CDIOCCLOSE) < 0)
1211
perror("CDIOCCLOSE");
1217
static void cdrom_lock_medium(BlockDriverState *bs, bool locked)
1219
BDRVRawState *s = bs->opaque;
1223
if (ioctl(s->fd, (locked ? CDIOCPREVENT : CDIOCALLOW)) < 0) {
1225
* Note: an error can happen if the distribution automatically
1228
/* perror("CDROM_LOCKDOOR"); */
1232
static BlockDriver bdrv_host_cdrom = {
1233
.format_name = "host_cdrom",
1234
.protocol_name = "host_cdrom",
1235
.instance_size = sizeof(BDRVRawState),
1236
.bdrv_probe_device = cdrom_probe_device,
1237
.bdrv_file_open = cdrom_open,
1238
.bdrv_close = raw_close,
1239
.bdrv_create = hdev_create,
1240
.create_options = raw_create_options,
1241
.bdrv_has_zero_init = hdev_has_zero_init,
1243
.bdrv_aio_readv = raw_aio_readv,
1244
.bdrv_aio_writev = raw_aio_writev,
1245
.bdrv_aio_flush = raw_aio_flush,
1247
.bdrv_truncate = raw_truncate,
1248
.bdrv_getlength = raw_getlength,
1249
.bdrv_get_allocated_file_size
1250
= raw_get_allocated_file_size,
1252
/* removable device support */
1253
.bdrv_is_inserted = cdrom_is_inserted,
1254
.bdrv_eject = cdrom_eject,
1255
.bdrv_lock_medium = cdrom_lock_medium,
1257
#endif /* __FreeBSD__ */
1259
static void bdrv_file_init(void)
1262
* Register all the drivers. Note that order is important, the driver
1263
* registered last will get probed first.
1265
bdrv_register(&bdrv_file);
1266
bdrv_register(&bdrv_host_device);
1268
bdrv_register(&bdrv_host_floppy);
1269
bdrv_register(&bdrv_host_cdrom);
1271
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
1272
bdrv_register(&bdrv_host_cdrom);
1276
block_init(bdrv_file_init);