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
50 #include <sys/ioctl.h>
51 #include <linux/cdrom.h>
61 #include <sys/ioctl.h>
62 #include <sys/disklabel.h>
67 #include <sys/ioctl.h>
68 #include <sys/diskslice.h>
71 //#define DEBUG_FLOPPY
74 #if defined(DEBUG_BLOCK)
75 #define DEBUG_BLOCK_PRINT(formatCstr, ...) do { if (qemu_log_enabled()) \
76 { qemu_log(formatCstr, ## __VA_ARGS__); qemu_log_flush(); } } while (0)
78 #define DEBUG_BLOCK_PRINT(formatCstr, ...)
81 /* OS X does not have O_DSYNC */
84 #define O_DSYNC O_SYNC
85 #elif defined(O_FSYNC)
86 #define O_DSYNC O_FSYNC
90 /* Approximate O_DIRECT with O_DSYNC if O_DIRECT isn't available */
92 #define O_DIRECT O_DSYNC
99 #define ALIGNED_BUFFER_SIZE (32 * 512)
101 /* if the FD is not accessed during that time (in ms), we try to
102 reopen it to see if the disk has been changed */
103 #define FD_OPEN_TIMEOUT 1000
105 typedef struct BDRVRawState {
108 unsigned int lseek_err_cnt;
111 #if defined(__linux__)
112 /* linux floppy specific */
113 int64_t fd_open_time;
114 int64_t fd_error_time;
116 int fd_media_changed;
118 #ifdef CONFIG_LINUX_AIO
121 uint8_t* aligned_buf;
124 static int fd_open(BlockDriverState *bs);
125 static int64_t raw_getlength(BlockDriverState *bs);
127 #if defined(__FreeBSD__)
128 static int cdrom_reopen(BlockDriverState *bs);
131 static int raw_open_common(BlockDriverState *bs, const char *filename,
132 int bdrv_flags, int open_flags)
134 BDRVRawState *s = bs->opaque;
137 s->lseek_err_cnt = 0;
139 s->open_flags = open_flags | O_BINARY;
140 s->open_flags &= ~O_ACCMODE;
141 if ((bdrv_flags & BDRV_O_ACCESS) == BDRV_O_RDWR) {
142 s->open_flags |= O_RDWR;
144 s->open_flags |= O_RDONLY;
148 /* Use O_DSYNC for write-through caching, no flags for write-back caching,
149 * and O_DIRECT for no caching. */
150 if ((bdrv_flags & BDRV_O_NOCACHE))
151 s->open_flags |= O_DIRECT;
152 else if (!(bdrv_flags & BDRV_O_CACHE_WB))
153 s->open_flags |= O_DSYNC;
156 fd = open(filename, s->open_flags, 0644);
164 s->aligned_buf = NULL;
166 if ((bdrv_flags & BDRV_O_NOCACHE)) {
167 s->aligned_buf = qemu_blockalign(bs, ALIGNED_BUFFER_SIZE);
168 if (s->aligned_buf == NULL) {
173 #ifdef CONFIG_LINUX_AIO
174 if ((bdrv_flags & (BDRV_O_NOCACHE|BDRV_O_NATIVE_AIO)) ==
175 (BDRV_O_NOCACHE|BDRV_O_NATIVE_AIO)) {
176 s->aio_ctx = laio_init();
184 s->aio_ctx = paio_init();
188 #ifdef CONFIG_LINUX_AIO
196 qemu_vfree(s->aligned_buf);
202 static int raw_open(BlockDriverState *bs, const char *filename, int flags)
204 BDRVRawState *s = bs->opaque;
207 s->type = FTYPE_FILE;
208 if (flags & BDRV_O_CREAT)
209 open_flags = O_CREAT | O_TRUNC;
211 return raw_open_common(bs, filename, flags, open_flags);
214 /* XXX: use host sector size if necessary with:
215 #ifdef DIOCGSECTORSIZE
217 unsigned int sectorsize = 512;
218 if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) &&
219 sectorsize > bufsize)
220 bufsize = sectorsize;
224 u_int32_t blockSize = 512;
225 if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) {
232 * offset and count are in bytes, but must be multiples of 512 for files
233 * opened with O_DIRECT. buf must be aligned to 512 bytes then.
235 * This function may be called without alignment if the caller ensures
236 * that O_DIRECT is not in effect.
238 static int raw_pread_aligned(BlockDriverState *bs, int64_t offset,
239 uint8_t *buf, int count)
241 BDRVRawState *s = bs->opaque;
248 if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) {
249 ++(s->lseek_err_cnt);
250 if(s->lseek_err_cnt <= 10) {
251 DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
252 "] lseek failed : %d = %s\n",
253 s->fd, bs->filename, offset, buf, count,
254 bs->total_sectors, errno, strerror(errno));
260 ret = read(s->fd, buf, count);
262 goto label__raw_read__success;
264 /* Allow reads beyond the end (needed for pwrite) */
265 if ((ret == 0) && bs->growable) {
266 int64_t size = raw_getlength(bs);
267 if (offset >= size) {
268 memset(buf, 0, count);
270 goto label__raw_read__success;
274 DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
275 "] read failed %d : %d = %s\n",
276 s->fd, bs->filename, offset, buf, count,
277 bs->total_sectors, ret, errno, strerror(errno));
279 /* Try harder for CDrom. */
280 if (bs->type == BDRV_TYPE_CDROM) {
281 lseek(s->fd, offset, SEEK_SET);
282 ret = read(s->fd, buf, count);
284 goto label__raw_read__success;
285 lseek(s->fd, offset, SEEK_SET);
286 ret = read(s->fd, buf, count);
288 goto label__raw_read__success;
290 DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
291 "] retry read failed %d : %d = %s\n",
292 s->fd, bs->filename, offset, buf, count,
293 bs->total_sectors, ret, errno, strerror(errno));
296 label__raw_read__success:
298 return (ret < 0) ? -errno : ret;
302 * offset and count are in bytes, but must be multiples of 512 for files
303 * opened with O_DIRECT. buf must be aligned to 512 bytes then.
305 * This function may be called without alignment if the caller ensures
306 * that O_DIRECT is not in effect.
308 static int raw_pwrite_aligned(BlockDriverState *bs, int64_t offset,
309 const uint8_t *buf, int count)
311 BDRVRawState *s = bs->opaque;
318 if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) {
319 ++(s->lseek_err_cnt);
320 if(s->lseek_err_cnt) {
321 DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%"
322 PRId64 "] lseek failed : %d = %s\n",
323 s->fd, bs->filename, offset, buf, count,
324 bs->total_sectors, errno, strerror(errno));
328 s->lseek_err_cnt = 0;
330 ret = write(s->fd, buf, count);
332 goto label__raw_write__success;
334 DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
335 "] write failed %d : %d = %s\n",
336 s->fd, bs->filename, offset, buf, count,
337 bs->total_sectors, ret, errno, strerror(errno));
339 label__raw_write__success:
341 return (ret < 0) ? -errno : ret;
346 * offset and count are in bytes and possibly not aligned. For files opened
347 * with O_DIRECT, necessary alignments are ensured before calling
348 * raw_pread_aligned to do the actual read.
350 static int raw_pread(BlockDriverState *bs, int64_t offset,
351 uint8_t *buf, int count)
353 BDRVRawState *s = bs->opaque;
354 int size, ret, shift, sum;
358 if (s->aligned_buf != NULL) {
360 if (offset & 0x1ff) {
361 /* align offset on a 512 bytes boundary */
363 shift = offset & 0x1ff;
364 size = (shift + count + 0x1ff) & ~0x1ff;
365 if (size > ALIGNED_BUFFER_SIZE)
366 size = ALIGNED_BUFFER_SIZE;
367 ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, size);
374 memcpy(buf, s->aligned_buf + shift, size);
384 if (count & 0x1ff || (uintptr_t) buf & 0x1ff) {
386 /* read on aligned buffer */
390 size = (count + 0x1ff) & ~0x1ff;
391 if (size > ALIGNED_BUFFER_SIZE)
392 size = ALIGNED_BUFFER_SIZE;
394 ret = raw_pread_aligned(bs, offset, s->aligned_buf, size);
402 memcpy(buf, s->aligned_buf, size);
414 return raw_pread_aligned(bs, offset, buf, count) + sum;
417 static int raw_read(BlockDriverState *bs, int64_t sector_num,
418 uint8_t *buf, int nb_sectors)
422 ret = raw_pread(bs, sector_num * 512, buf, nb_sectors * 512);
423 if (ret == (nb_sectors * 512))
429 * offset and count are in bytes and possibly not aligned. For files opened
430 * with O_DIRECT, necessary alignments are ensured before calling
431 * raw_pwrite_aligned to do the actual write.
433 static int raw_pwrite(BlockDriverState *bs, int64_t offset,
434 const uint8_t *buf, int count)
436 BDRVRawState *s = bs->opaque;
437 int size, ret, shift, sum;
441 if (s->aligned_buf != NULL) {
443 if (offset & 0x1ff) {
444 /* align offset on a 512 bytes boundary */
445 shift = offset & 0x1ff;
446 ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, 512);
453 memcpy(s->aligned_buf + shift, buf, size);
455 ret = raw_pwrite_aligned(bs, offset - shift, s->aligned_buf, 512);
467 if (count & 0x1ff || (uintptr_t) buf & 0x1ff) {
469 while ((size = (count & ~0x1ff)) != 0) {
471 if (size > ALIGNED_BUFFER_SIZE)
472 size = ALIGNED_BUFFER_SIZE;
474 memcpy(s->aligned_buf, buf, size);
476 ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, size);
485 /* here, count < 512 because (count & ~0x1ff) == 0 */
487 ret = raw_pread_aligned(bs, offset, s->aligned_buf, 512);
490 memcpy(s->aligned_buf, buf, count);
492 ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, 512);
503 return raw_pwrite_aligned(bs, offset, buf, count) + sum;
506 static int raw_write(BlockDriverState *bs, int64_t sector_num,
507 const uint8_t *buf, int nb_sectors)
510 ret = raw_pwrite(bs, sector_num * 512, buf, nb_sectors * 512);
511 if (ret == (nb_sectors * 512))
517 * Check if all memory in this vector is sector aligned.
519 static int qiov_is_aligned(QEMUIOVector *qiov)
523 for (i = 0; i < qiov->niov; i++) {
524 if ((uintptr_t) qiov->iov[i].iov_base % 512) {
532 static BlockDriverAIOCB *raw_aio_submit(BlockDriverState *bs,
533 int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
534 BlockDriverCompletionFunc *cb, void *opaque, int type)
536 BDRVRawState *s = bs->opaque;
542 * If O_DIRECT is used the buffer needs to be aligned on a sector
543 * boundary. Check if this is the case or telll the low-level
544 * driver that it needs to copy the buffer.
546 if (s->aligned_buf) {
547 if (!qiov_is_aligned(qiov)) {
548 type |= QEMU_AIO_MISALIGNED;
549 #ifdef CONFIG_LINUX_AIO
550 } else if (s->use_aio) {
551 return laio_submit(bs, s->aio_ctx, s->fd, sector_num, qiov,
552 nb_sectors, cb, opaque, type);
557 return paio_submit(bs, s->aio_ctx, s->fd, sector_num, qiov, nb_sectors,
561 static BlockDriverAIOCB *raw_aio_readv(BlockDriverState *bs,
562 int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
563 BlockDriverCompletionFunc *cb, void *opaque)
565 return raw_aio_submit(bs, sector_num, qiov, nb_sectors,
566 cb, opaque, QEMU_AIO_READ);
569 static BlockDriverAIOCB *raw_aio_writev(BlockDriverState *bs,
570 int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
571 BlockDriverCompletionFunc *cb, void *opaque)
573 return raw_aio_submit(bs, sector_num, qiov, nb_sectors,
574 cb, opaque, QEMU_AIO_WRITE);
577 static void raw_close(BlockDriverState *bs)
579 BDRVRawState *s = bs->opaque;
583 if (s->aligned_buf != NULL)
584 qemu_free(s->aligned_buf);
588 static int raw_truncate(BlockDriverState *bs, int64_t offset)
590 BDRVRawState *s = bs->opaque;
591 if (s->type != FTYPE_FILE)
593 if (ftruncate(s->fd, offset) < 0)
599 static int64_t raw_getlength(BlockDriverState *bs)
601 BDRVRawState *s = bs->opaque;
607 if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) {
610 if (ioctl(fd, DIOCGDINFO, &dl))
612 return (uint64_t)dl.d_secsize *
613 dl.d_partitions[DISKPART(st.st_rdev)].p_size;
617 #else /* !__OpenBSD__ */
618 static int64_t raw_getlength(BlockDriverState *bs)
620 BDRVRawState *s = bs->opaque;
630 struct dk_minfo minfo;
643 if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
644 #ifdef DIOCGMEDIASIZE
645 if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
646 #elif defined(DIOCGPART)
649 if (ioctl(fd, DIOCGPART, &pi) == 0)
650 size = pi.media_size;
657 size = LONG_LONG_MAX;
659 size = lseek(fd, 0LL, SEEK_END);
664 /* XXX FreeBSD acd returns UINT_MAX sectors for an empty drive */
665 if (size == 2048LL * (unsigned)-1)
667 /* XXX no disc? maybe we need to reopen... */
668 if (size <= 0 && !reopened && cdrom_reopen(bs) >= 0) {
678 * use the DKIOCGMEDIAINFO ioctl to read the size.
680 rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo );
682 size = minfo.dki_lbsize * minfo.dki_capacity;
683 } else /* there are reports that lseek on some devices
684 fails, but irc discussion said that contingency
685 on contingency was overkill */
688 size = lseek(fd, 0, SEEK_END);
694 static int raw_create(const char *filename, QEMUOptionParameter *options)
698 int64_t total_size = 0;
700 /* Read out options */
701 while (options && options->name) {
702 if (!strcmp(options->name, BLOCK_OPT_SIZE)) {
703 total_size = options->value.n / 512;
708 fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
713 if (ftruncate(fd, total_size * 512) != 0) {
716 if (close(fd) != 0) {
723 static void raw_flush(BlockDriverState *bs)
725 BDRVRawState *s = bs->opaque;
730 static QEMUOptionParameter raw_create_options[] = {
732 .name = BLOCK_OPT_SIZE,
734 .help = "Virtual disk size"
739 static BlockDriver bdrv_raw = {
740 .format_name = "raw",
741 .instance_size = sizeof(BDRVRawState),
742 .bdrv_probe = NULL, /* no probe for protocols */
743 .bdrv_open = raw_open,
744 .bdrv_read = raw_read,
745 .bdrv_write = raw_write,
746 .bdrv_close = raw_close,
747 .bdrv_create = raw_create,
748 .bdrv_flush = raw_flush,
750 .bdrv_aio_readv = raw_aio_readv,
751 .bdrv_aio_writev = raw_aio_writev,
753 .bdrv_truncate = raw_truncate,
754 .bdrv_getlength = raw_getlength,
756 .create_options = raw_create_options,
759 /***********************************************/
763 static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator );
764 static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize );
766 kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator )
768 kern_return_t kernResult;
769 mach_port_t masterPort;
770 CFMutableDictionaryRef classesToMatch;
772 kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort );
773 if ( KERN_SUCCESS != kernResult ) {
774 printf( "IOMasterPort returned %d\n", kernResult );
777 classesToMatch = IOServiceMatching( kIOCDMediaClass );
778 if ( classesToMatch == NULL ) {
779 printf( "IOServiceMatching returned a NULL dictionary.\n" );
781 CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue );
783 kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator );
784 if ( KERN_SUCCESS != kernResult )
786 printf( "IOServiceGetMatchingServices returned %d\n", kernResult );
792 kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize )
794 io_object_t nextMedia;
795 kern_return_t kernResult = KERN_FAILURE;
797 nextMedia = IOIteratorNext( mediaIterator );
800 CFTypeRef bsdPathAsCFString;
801 bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 );
802 if ( bsdPathAsCFString ) {
803 size_t devPathLength;
804 strcpy( bsdPath, _PATH_DEV );
805 strcat( bsdPath, "r" );
806 devPathLength = strlen( bsdPath );
807 if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) {
808 kernResult = KERN_SUCCESS;
810 CFRelease( bsdPathAsCFString );
812 IOObjectRelease( nextMedia );
820 static int hdev_probe_device(const char *filename)
824 /* allow a dedicated CD-ROM driver to match with a higher priority */
825 if (strstart(filename, "/dev/cdrom", NULL))
828 if (stat(filename, &st) >= 0 &&
829 (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode))) {
836 static int hdev_open(BlockDriverState *bs, const char *filename, int flags)
838 BDRVRawState *s = bs->opaque;
841 if (strstart(filename, "/dev/cdrom", NULL)) {
842 kern_return_t kernResult;
843 io_iterator_t mediaIterator;
844 char bsdPath[ MAXPATHLEN ];
847 kernResult = FindEjectableCDMedia( &mediaIterator );
848 kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) );
850 if ( bsdPath[ 0 ] != '\0' ) {
851 strcat(bsdPath,"s0");
852 /* some CDs don't have a partition 0 */
853 fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE);
855 bsdPath[strlen(bsdPath)-1] = '1';
863 IOObjectRelease( mediaIterator );
867 s->type = FTYPE_FILE;
868 #if defined(__linux__)
869 if (strstart(filename, "/dev/sg", NULL)) {
874 return raw_open_common(bs, filename, flags, 0);
877 #if defined(__linux__)
878 /* Note: we do not have a reliable method to detect if the floppy is
879 present. The current method is to try to open the floppy at every
880 I/O and to keep it opened during a few hundreds of ms. */
881 static int fd_open(BlockDriverState *bs)
883 BDRVRawState *s = bs->opaque;
884 int last_media_present;
886 if (s->type != FTYPE_FD)
888 last_media_present = (s->fd >= 0);
890 (qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) {
894 printf("Floppy closed\n");
898 if (s->fd_got_error &&
899 (qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) {
901 printf("No floppy (open delayed)\n");
905 s->fd = open(bs->filename, s->open_flags & ~O_NONBLOCK);
907 s->fd_error_time = qemu_get_clock(rt_clock);
909 if (last_media_present)
910 s->fd_media_changed = 1;
912 printf("No floppy\n");
917 printf("Floppy opened\n");
920 if (!last_media_present)
921 s->fd_media_changed = 1;
922 s->fd_open_time = qemu_get_clock(rt_clock);
927 static int hdev_ioctl(BlockDriverState *bs, unsigned long int req, void *buf)
929 BDRVRawState *s = bs->opaque;
931 return ioctl(s->fd, req, buf);
934 static BlockDriverAIOCB *hdev_aio_ioctl(BlockDriverState *bs,
935 unsigned long int req, void *buf,
936 BlockDriverCompletionFunc *cb, void *opaque)
938 BDRVRawState *s = bs->opaque;
942 return paio_ioctl(bs, s->fd, req, buf, cb, opaque);
945 #elif defined(__FreeBSD__)
946 static int fd_open(BlockDriverState *bs)
948 BDRVRawState *s = bs->opaque;
950 /* this is just to ensure s->fd is sane (its called by io ops) */
955 #else /* !linux && !FreeBSD */
957 static int fd_open(BlockDriverState *bs)
962 #endif /* !linux && !FreeBSD */
964 static int hdev_create(const char *filename, QEMUOptionParameter *options)
968 struct stat stat_buf;
969 int64_t total_size = 0;
971 /* Read out options */
972 while (options && options->name) {
973 if (!strcmp(options->name, "size")) {
974 total_size = options->value.n / 512;
979 fd = open(filename, O_WRONLY | O_BINARY);
983 if (fstat(fd, &stat_buf) < 0)
985 else if (!S_ISBLK(stat_buf.st_mode) && !S_ISCHR(stat_buf.st_mode))
987 else if (lseek(fd, 0, SEEK_END) < total_size * 512)
994 static BlockDriver bdrv_host_device = {
995 .format_name = "host_device",
996 .instance_size = sizeof(BDRVRawState),
997 .bdrv_probe_device = hdev_probe_device,
998 .bdrv_open = hdev_open,
999 .bdrv_close = raw_close,
1000 .bdrv_create = hdev_create,
1001 .bdrv_flush = raw_flush,
1003 .bdrv_aio_readv = raw_aio_readv,
1004 .bdrv_aio_writev = raw_aio_writev,
1006 .bdrv_read = raw_read,
1007 .bdrv_write = raw_write,
1008 .bdrv_getlength = raw_getlength,
1010 /* generic scsi device */
1012 .bdrv_ioctl = hdev_ioctl,
1013 .bdrv_aio_ioctl = hdev_aio_ioctl,
1018 static int floppy_open(BlockDriverState *bs, const char *filename, int flags)
1020 BDRVRawState *s = bs->opaque;
1025 /* open will not fail even if no floppy is inserted, so add O_NONBLOCK */
1026 ret = raw_open_common(bs, filename, flags, O_NONBLOCK);
1030 /* close fd so that we can reopen it as needed */
1033 s->fd_media_changed = 1;
1038 static int floppy_probe_device(const char *filename)
1040 if (strstart(filename, "/dev/fd", NULL))
1046 static int floppy_is_inserted(BlockDriverState *bs)
1048 return fd_open(bs) >= 0;
1051 static int floppy_media_changed(BlockDriverState *bs)
1053 BDRVRawState *s = bs->opaque;
1057 * XXX: we do not have a true media changed indication.
1058 * It does not work if the floppy is changed without trying to read it.
1061 ret = s->fd_media_changed;
1062 s->fd_media_changed = 0;
1064 printf("Floppy changed=%d\n", ret);
1069 static int floppy_eject(BlockDriverState *bs, int eject_flag)
1071 BDRVRawState *s = bs->opaque;
1078 fd = open(bs->filename, s->open_flags | O_NONBLOCK);
1080 if (ioctl(fd, FDEJECT, 0) < 0)
1088 static BlockDriver bdrv_host_floppy = {
1089 .format_name = "host_floppy",
1090 .instance_size = sizeof(BDRVRawState),
1091 .bdrv_probe_device = floppy_probe_device,
1092 .bdrv_open = floppy_open,
1093 .bdrv_close = raw_close,
1094 .bdrv_create = hdev_create,
1095 .bdrv_flush = raw_flush,
1097 .bdrv_aio_readv = raw_aio_readv,
1098 .bdrv_aio_writev = raw_aio_writev,
1100 .bdrv_read = raw_read,
1101 .bdrv_write = raw_write,
1102 .bdrv_getlength = raw_getlength,
1104 /* removable device support */
1105 .bdrv_is_inserted = floppy_is_inserted,
1106 .bdrv_media_changed = floppy_media_changed,
1107 .bdrv_eject = floppy_eject,
1110 static int cdrom_open(BlockDriverState *bs, const char *filename, int flags)
1112 BDRVRawState *s = bs->opaque;
1116 /* open will not fail even if no CD is inserted, so add O_NONBLOCK */
1117 return raw_open_common(bs, filename, flags, O_NONBLOCK);
1120 static int cdrom_probe_device(const char *filename)
1122 if (strstart(filename, "/dev/cd", NULL))
1127 static int cdrom_is_inserted(BlockDriverState *bs)
1129 BDRVRawState *s = bs->opaque;
1132 ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT);
1133 if (ret == CDS_DISC_OK)
1138 static int cdrom_eject(BlockDriverState *bs, int eject_flag)
1140 BDRVRawState *s = bs->opaque;
1143 if (ioctl(s->fd, CDROMEJECT, NULL) < 0)
1144 perror("CDROMEJECT");
1146 if (ioctl(s->fd, CDROMCLOSETRAY, NULL) < 0)
1147 perror("CDROMEJECT");
1153 static int cdrom_set_locked(BlockDriverState *bs, int locked)
1155 BDRVRawState *s = bs->opaque;
1157 if (ioctl(s->fd, CDROM_LOCKDOOR, locked) < 0) {
1159 * Note: an error can happen if the distribution automatically
1162 /* perror("CDROM_LOCKDOOR"); */
1168 static BlockDriver bdrv_host_cdrom = {
1169 .format_name = "host_cdrom",
1170 .instance_size = sizeof(BDRVRawState),
1171 .bdrv_probe_device = cdrom_probe_device,
1172 .bdrv_open = cdrom_open,
1173 .bdrv_close = raw_close,
1174 .bdrv_create = hdev_create,
1175 .bdrv_flush = raw_flush,
1177 .bdrv_aio_readv = raw_aio_readv,
1178 .bdrv_aio_writev = raw_aio_writev,
1180 .bdrv_read = raw_read,
1181 .bdrv_write = raw_write,
1182 .bdrv_getlength = raw_getlength,
1184 /* removable device support */
1185 .bdrv_is_inserted = cdrom_is_inserted,
1186 .bdrv_eject = cdrom_eject,
1187 .bdrv_set_locked = cdrom_set_locked,
1189 /* generic scsi device */
1190 .bdrv_ioctl = hdev_ioctl,
1191 .bdrv_aio_ioctl = hdev_aio_ioctl,
1193 #endif /* __linux__ */
1196 static int cdrom_open(BlockDriverState *bs, const char *filename, int flags)
1198 BDRVRawState *s = bs->opaque;
1203 ret = raw_open_common(bs, filename, flags, 0);
1207 /* make sure the door isnt locked at this time */
1208 ioctl(s->fd, CDIOCALLOW);
1212 static int cdrom_probe_device(const char *filename)
1214 if (strstart(filename, "/dev/cd", NULL) ||
1215 strstart(filename, "/dev/acd", NULL))
1220 static int cdrom_reopen(BlockDriverState *bs)
1222 BDRVRawState *s = bs->opaque;
1226 * Force reread of possibly changed/newly loaded disc,
1227 * FreeBSD seems to not notice sometimes...
1231 fd = open(bs->filename, s->open_flags, 0644);
1238 /* make sure the door isnt locked at this time */
1239 ioctl(s->fd, CDIOCALLOW);
1243 static int cdrom_is_inserted(BlockDriverState *bs)
1245 return raw_getlength(bs) > 0;
1248 static int cdrom_eject(BlockDriverState *bs, int eject_flag)
1250 BDRVRawState *s = bs->opaque;
1255 (void) ioctl(s->fd, CDIOCALLOW);
1258 if (ioctl(s->fd, CDIOCEJECT) < 0)
1259 perror("CDIOCEJECT");
1261 if (ioctl(s->fd, CDIOCCLOSE) < 0)
1262 perror("CDIOCCLOSE");
1265 if (cdrom_reopen(bs) < 0)
1270 static int cdrom_set_locked(BlockDriverState *bs, int locked)
1272 BDRVRawState *s = bs->opaque;
1276 if (ioctl(s->fd, (locked ? CDIOCPREVENT : CDIOCALLOW)) < 0) {
1278 * Note: an error can happen if the distribution automatically
1281 /* perror("CDROM_LOCKDOOR"); */
1287 static BlockDriver bdrv_host_cdrom = {
1288 .format_name = "host_cdrom",
1289 .instance_size = sizeof(BDRVRawState),
1290 .bdrv_probe_device = cdrom_probe_device,
1291 .bdrv_open = cdrom_open,
1292 .bdrv_close = raw_close,
1293 .bdrv_create = hdev_create,
1294 .bdrv_flush = raw_flush,
1296 .bdrv_aio_readv = raw_aio_readv,
1297 .bdrv_aio_writev = raw_aio_writev,
1299 .bdrv_read = raw_read,
1300 .bdrv_write = raw_write,
1301 .bdrv_getlength = raw_getlength,
1303 /* removable device support */
1304 .bdrv_is_inserted = cdrom_is_inserted,
1305 .bdrv_eject = cdrom_eject,
1306 .bdrv_set_locked = cdrom_set_locked,
1308 #endif /* __FreeBSD__ */
1310 static void bdrv_raw_init(void)
1313 * Register all the drivers. Note that order is important, the driver
1314 * registered last will get probed first.
1316 bdrv_register(&bdrv_raw);
1317 bdrv_register(&bdrv_host_device);
1319 bdrv_register(&bdrv_host_floppy);
1320 bdrv_register(&bdrv_host_cdrom);
1323 bdrv_register(&bdrv_host_cdrom);
1327 block_init(bdrv_raw_init);