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"
27 #include "block_int.h"
30 #include "posix-aio-compat.h"
35 #include <sys/param.h>
36 #include <IOKit/IOKitLib.h>
37 #include <IOKit/IOBSD.h>
38 #include <IOKit/storage/IOMediaBSDClient.h>
39 #include <IOKit/storage/IOMedia.h>
40 #include <IOKit/storage/IOCDMedia.h>
41 //#include <IOKit/storage/IOCDTypes.h>
42 #include <CoreFoundation/CoreFoundation.h>
46 #define _POSIX_PTHREAD_SEMANTICS 1
51 #include <sys/ioctl.h>
52 #include <linux/cdrom.h>
61 #include <sys/ioctl.h>
62 #include <sys/disklabel.h>
66 //#define DEBUG_FLOPPY
69 #if defined(DEBUG_BLOCK)
70 #define DEBUG_BLOCK_PRINT(formatCstr, args...) do { if (qemu_log_enabled()) \
71 { qemu_log(formatCstr, ##args); qemu_log_flush(); } } while (0)
73 #define DEBUG_BLOCK_PRINT(formatCstr, args...)
76 /* OS X does not have O_DSYNC */
78 #define O_DSYNC O_SYNC
81 /* Approximate O_DIRECT with O_DSYNC if O_DIRECT isn't available */
83 #define O_DIRECT O_DSYNC
90 #define ALIGNED_BUFFER_SIZE (32 * 512)
92 /* if the FD is not accessed during that time (in ms), we try to
93 reopen it to see if the disk has been changed */
94 #define FD_OPEN_TIMEOUT 1000
96 typedef struct BDRVRawState {
99 unsigned int lseek_err_cnt;
100 #if defined(__linux__)
101 /* linux floppy specific */
103 int64_t fd_open_time;
104 int64_t fd_error_time;
106 int fd_media_changed;
108 uint8_t* aligned_buf;
111 static int posix_aio_init(void);
113 static int fd_open(BlockDriverState *bs);
115 static int raw_open(BlockDriverState *bs, const char *filename, int flags)
117 BDRVRawState *s = bs->opaque;
118 int fd, open_flags, ret;
122 s->lseek_err_cnt = 0;
124 open_flags = O_BINARY;
125 if ((flags & BDRV_O_ACCESS) == O_RDWR) {
126 open_flags |= O_RDWR;
128 open_flags |= O_RDONLY;
131 if (flags & BDRV_O_CREAT)
132 open_flags |= O_CREAT | O_TRUNC;
134 /* Use O_DSYNC for write-through caching, no flags for write-back caching,
135 * and O_DIRECT for no caching. */
136 if ((flags & BDRV_O_NOCACHE))
137 open_flags |= O_DIRECT;
138 else if (!(flags & BDRV_O_CACHE_WB))
139 open_flags |= O_DSYNC;
141 s->type = FTYPE_FILE;
143 fd = open(filename, open_flags, 0644);
151 s->aligned_buf = NULL;
152 if ((flags & BDRV_O_NOCACHE)) {
153 s->aligned_buf = qemu_memalign(512, ALIGNED_BUFFER_SIZE);
154 if (s->aligned_buf == NULL) {
163 /* XXX: use host sector size if necessary with:
164 #ifdef DIOCGSECTORSIZE
166 unsigned int sectorsize = 512;
167 if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) &&
168 sectorsize > bufsize)
169 bufsize = sectorsize;
173 u_int32_t blockSize = 512;
174 if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) {
181 * offset and count are in bytes, but must be multiples of 512 for files
182 * opened with O_DIRECT. buf must be aligned to 512 bytes then.
184 * This function may be called without alignment if the caller ensures
185 * that O_DIRECT is not in effect.
187 static int raw_pread_aligned(BlockDriverState *bs, int64_t offset,
188 uint8_t *buf, int count)
190 BDRVRawState *s = bs->opaque;
197 if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) {
198 ++(s->lseek_err_cnt);
199 if(s->lseek_err_cnt <= 10) {
200 DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
201 "] lseek failed : %d = %s\n",
202 s->fd, bs->filename, offset, buf, count,
203 bs->total_sectors, errno, strerror(errno));
209 ret = read(s->fd, buf, count);
211 goto label__raw_read__success;
213 DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
214 "] read failed %d : %d = %s\n",
215 s->fd, bs->filename, offset, buf, count,
216 bs->total_sectors, ret, errno, strerror(errno));
218 /* Try harder for CDrom. */
219 if (bs->type == BDRV_TYPE_CDROM) {
220 lseek(s->fd, offset, SEEK_SET);
221 ret = read(s->fd, buf, count);
223 goto label__raw_read__success;
224 lseek(s->fd, offset, SEEK_SET);
225 ret = read(s->fd, buf, count);
227 goto label__raw_read__success;
229 DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
230 "] retry read failed %d : %d = %s\n",
231 s->fd, bs->filename, offset, buf, count,
232 bs->total_sectors, ret, errno, strerror(errno));
235 label__raw_read__success:
241 * offset and count are in bytes, but must be multiples of 512 for files
242 * opened with O_DIRECT. buf must be aligned to 512 bytes then.
244 * This function may be called without alignment if the caller ensures
245 * that O_DIRECT is not in effect.
247 static int raw_pwrite_aligned(BlockDriverState *bs, int64_t offset,
248 const uint8_t *buf, int count)
250 BDRVRawState *s = bs->opaque;
257 if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) {
258 ++(s->lseek_err_cnt);
259 if(s->lseek_err_cnt) {
260 DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%"
261 PRId64 "] lseek failed : %d = %s\n",
262 s->fd, bs->filename, offset, buf, count,
263 bs->total_sectors, errno, strerror(errno));
267 s->lseek_err_cnt = 0;
269 ret = write(s->fd, buf, count);
271 goto label__raw_write__success;
273 DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
274 "] write failed %d : %d = %s\n",
275 s->fd, bs->filename, offset, buf, count,
276 bs->total_sectors, ret, errno, strerror(errno));
278 label__raw_write__success:
280 return (ret < 0) ? -errno : ret;
285 * offset and count are in bytes and possibly not aligned. For files opened
286 * with O_DIRECT, necessary alignments are ensured before calling
287 * raw_pread_aligned to do the actual read.
289 static int raw_pread(BlockDriverState *bs, int64_t offset,
290 uint8_t *buf, int count)
292 BDRVRawState *s = bs->opaque;
293 int size, ret, shift, sum;
297 if (s->aligned_buf != NULL) {
299 if (offset & 0x1ff) {
300 /* align offset on a 512 bytes boundary */
302 shift = offset & 0x1ff;
303 size = (shift + count + 0x1ff) & ~0x1ff;
304 if (size > ALIGNED_BUFFER_SIZE)
305 size = ALIGNED_BUFFER_SIZE;
306 ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, size);
313 memcpy(buf, s->aligned_buf + shift, size);
323 if (count & 0x1ff || (uintptr_t) buf & 0x1ff) {
325 /* read on aligned buffer */
329 size = (count + 0x1ff) & ~0x1ff;
330 if (size > ALIGNED_BUFFER_SIZE)
331 size = ALIGNED_BUFFER_SIZE;
333 ret = raw_pread_aligned(bs, offset, s->aligned_buf, size);
341 memcpy(buf, s->aligned_buf, size);
353 return raw_pread_aligned(bs, offset, buf, count) + sum;
357 * offset and count are in bytes and possibly not aligned. For files opened
358 * with O_DIRECT, necessary alignments are ensured before calling
359 * raw_pwrite_aligned to do the actual write.
361 static int raw_pwrite(BlockDriverState *bs, int64_t offset,
362 const uint8_t *buf, int count)
364 BDRVRawState *s = bs->opaque;
365 int size, ret, shift, sum;
369 if (s->aligned_buf != NULL) {
371 if (offset & 0x1ff) {
372 /* align offset on a 512 bytes boundary */
373 shift = offset & 0x1ff;
374 ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, 512);
381 memcpy(s->aligned_buf + shift, buf, size);
383 ret = raw_pwrite_aligned(bs, offset - shift, s->aligned_buf, 512);
395 if (count & 0x1ff || (uintptr_t) buf & 0x1ff) {
397 while ((size = (count & ~0x1ff)) != 0) {
399 if (size > ALIGNED_BUFFER_SIZE)
400 size = ALIGNED_BUFFER_SIZE;
402 memcpy(s->aligned_buf, buf, size);
404 ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, size);
413 /* here, count < 512 because (count & ~0x1ff) == 0 */
415 ret = raw_pread_aligned(bs, offset, s->aligned_buf, 512);
418 memcpy(s->aligned_buf, buf, count);
420 ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, 512);
431 return raw_pwrite_aligned(bs, offset, buf, count) + sum;
435 /***********************************************************/
436 /* Unix AIO using POSIX AIO */
438 typedef struct RawAIOCB {
439 BlockDriverAIOCB common;
440 struct qemu_paiocb aiocb;
441 struct RawAIOCB *next;
445 typedef struct PosixAioState
451 static void posix_aio_read(void *opaque)
453 PosixAioState *s = opaque;
454 RawAIOCB *acb, **pacb;
458 /* read all bytes from signal pipe */
462 len = read(s->rfd, bytes, sizeof(bytes));
463 if (len == -1 && errno == EINTR)
464 continue; /* try again */
465 if (len == sizeof(bytes))
466 continue; /* more to read */
471 pacb = &s->first_aio;
476 ret = qemu_paio_error(&acb->aiocb);
477 if (ret == ECANCELED) {
478 /* remove the request */
480 qemu_aio_release(acb);
481 } else if (ret != EINPROGRESS) {
484 ret = qemu_paio_return(&acb->aiocb);
485 if (ret == acb->aiocb.aio_nbytes)
492 /* remove the request */
494 /* call the callback */
495 acb->common.cb(acb->common.opaque, ret);
496 qemu_aio_release(acb);
506 static int posix_aio_flush(void *opaque)
508 PosixAioState *s = opaque;
509 return !!s->first_aio;
512 static PosixAioState *posix_aio_state;
514 static void aio_signal_handler(int signum)
516 if (posix_aio_state) {
519 write(posix_aio_state->wfd, &byte, sizeof(byte));
525 static int posix_aio_init(void)
527 struct sigaction act;
530 struct qemu_paioinit ai;
535 s = qemu_malloc(sizeof(PosixAioState));
537 sigfillset(&act.sa_mask);
538 act.sa_flags = 0; /* do not restart syscalls to interrupt select() */
539 act.sa_handler = aio_signal_handler;
540 sigaction(SIGUSR2, &act, NULL);
543 if (pipe(fds) == -1) {
544 fprintf(stderr, "failed to create pipe\n");
551 fcntl(s->rfd, F_SETFL, O_NONBLOCK);
552 fcntl(s->wfd, F_SETFL, O_NONBLOCK);
554 qemu_aio_set_fd_handler(s->rfd, posix_aio_read, NULL, posix_aio_flush, s);
556 memset(&ai, 0, sizeof(ai));
566 static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
567 int64_t sector_num, uint8_t *buf, int nb_sectors,
568 BlockDriverCompletionFunc *cb, void *opaque)
570 BDRVRawState *s = bs->opaque;
576 acb = qemu_aio_get(bs, cb, opaque);
579 acb->aiocb.aio_fildes = s->fd;
580 acb->aiocb.ev_signo = SIGUSR2;
581 acb->aiocb.aio_buf = buf;
583 acb->aiocb.aio_nbytes = -nb_sectors;
585 acb->aiocb.aio_nbytes = nb_sectors * 512;
586 acb->aiocb.aio_offset = sector_num * 512;
587 acb->next = posix_aio_state->first_aio;
588 posix_aio_state->first_aio = acb;
592 static void raw_aio_em_cb(void* opaque)
594 RawAIOCB *acb = opaque;
595 acb->common.cb(acb->common.opaque, acb->ret);
596 qemu_aio_release(acb);
599 static void raw_aio_remove(RawAIOCB *acb)
603 /* remove the callback from the queue */
604 pacb = &posix_aio_state->first_aio;
607 fprintf(stderr, "raw_aio_remove: aio request not found!\n");
609 } else if (*pacb == acb) {
611 qemu_aio_release(acb);
614 pacb = &(*pacb)->next;
618 static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
619 int64_t sector_num, uint8_t *buf, int nb_sectors,
620 BlockDriverCompletionFunc *cb, void *opaque)
625 * If O_DIRECT is used and the buffer is not aligned fall back
628 BDRVRawState *s = bs->opaque;
630 if (unlikely(s->aligned_buf != NULL && ((uintptr_t) buf % 512))) {
632 acb = qemu_aio_get(bs, cb, opaque);
633 acb->ret = raw_pread(bs, 512 * sector_num, buf, 512 * nb_sectors);
634 bh = qemu_bh_new(raw_aio_em_cb, acb);
635 qemu_bh_schedule(bh);
639 acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque);
642 if (qemu_paio_read(&acb->aiocb) < 0) {
649 static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
650 int64_t sector_num, const uint8_t *buf, int nb_sectors,
651 BlockDriverCompletionFunc *cb, void *opaque)
656 * If O_DIRECT is used and the buffer is not aligned fall back
659 BDRVRawState *s = bs->opaque;
661 if (unlikely(s->aligned_buf != NULL && ((uintptr_t) buf % 512))) {
663 acb = qemu_aio_get(bs, cb, opaque);
664 acb->ret = raw_pwrite(bs, 512 * sector_num, buf, 512 * nb_sectors);
665 bh = qemu_bh_new(raw_aio_em_cb, acb);
666 qemu_bh_schedule(bh);
670 acb = raw_aio_setup(bs, sector_num, (uint8_t*)buf, nb_sectors, cb, opaque);
673 if (qemu_paio_write(&acb->aiocb) < 0) {
680 static void raw_aio_cancel(BlockDriverAIOCB *blockacb)
683 RawAIOCB *acb = (RawAIOCB *)blockacb;
685 ret = qemu_paio_cancel(acb->aiocb.aio_fildes, &acb->aiocb);
686 if (ret == QEMU_PAIO_NOTCANCELED) {
687 /* fail safe: if the aio could not be canceled, we wait for
689 while (qemu_paio_error(&acb->aiocb) == EINPROGRESS);
694 #else /* CONFIG_AIO */
695 static int posix_aio_init(void)
699 #endif /* CONFIG_AIO */
702 static void raw_close(BlockDriverState *bs)
704 BDRVRawState *s = bs->opaque;
708 if (s->aligned_buf != NULL)
709 qemu_free(s->aligned_buf);
713 static int raw_truncate(BlockDriverState *bs, int64_t offset)
715 BDRVRawState *s = bs->opaque;
716 if (s->type != FTYPE_FILE)
718 if (ftruncate(s->fd, offset) < 0)
724 static int64_t raw_getlength(BlockDriverState *bs)
726 BDRVRawState *s = bs->opaque;
732 if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) {
735 if (ioctl(fd, DIOCGDINFO, &dl))
737 return (uint64_t)dl.d_secsize *
738 dl.d_partitions[DISKPART(st.st_rdev)].p_size;
742 #else /* !__OpenBSD__ */
743 static int64_t raw_getlength(BlockDriverState *bs)
745 BDRVRawState *s = bs->opaque;
752 struct dk_minfo minfo;
762 if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
763 #ifdef DIOCGMEDIASIZE
764 if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
767 size = LONG_LONG_MAX;
769 size = lseek(fd, 0LL, SEEK_END);
775 * use the DKIOCGMEDIAINFO ioctl to read the size.
777 rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo );
779 size = minfo.dki_lbsize * minfo.dki_capacity;
780 } else /* there are reports that lseek on some devices
781 fails, but irc discussion said that contingency
782 on contingency was overkill */
785 size = lseek(fd, 0, SEEK_END);
791 static int raw_create(const char *filename, int64_t total_size,
792 const char *backing_file, int flags)
796 if (flags || backing_file)
799 fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
803 ftruncate(fd, total_size * 512);
808 static void raw_flush(BlockDriverState *bs)
810 BDRVRawState *s = bs->opaque;
814 BlockDriver bdrv_raw = {
816 sizeof(BDRVRawState),
817 NULL, /* no probe for protocols */
826 .bdrv_aio_read = raw_aio_read,
827 .bdrv_aio_write = raw_aio_write,
828 .bdrv_aio_cancel = raw_aio_cancel,
829 .aiocb_size = sizeof(RawAIOCB),
832 .bdrv_pread = raw_pread,
833 .bdrv_pwrite = raw_pwrite,
834 .bdrv_truncate = raw_truncate,
835 .bdrv_getlength = raw_getlength,
838 /***********************************************/
842 static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator );
843 static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize );
845 kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator )
847 kern_return_t kernResult;
848 mach_port_t masterPort;
849 CFMutableDictionaryRef classesToMatch;
851 kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort );
852 if ( KERN_SUCCESS != kernResult ) {
853 printf( "IOMasterPort returned %d\n", kernResult );
856 classesToMatch = IOServiceMatching( kIOCDMediaClass );
857 if ( classesToMatch == NULL ) {
858 printf( "IOServiceMatching returned a NULL dictionary.\n" );
860 CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue );
862 kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator );
863 if ( KERN_SUCCESS != kernResult )
865 printf( "IOServiceGetMatchingServices returned %d\n", kernResult );
871 kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize )
873 io_object_t nextMedia;
874 kern_return_t kernResult = KERN_FAILURE;
876 nextMedia = IOIteratorNext( mediaIterator );
879 CFTypeRef bsdPathAsCFString;
880 bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 );
881 if ( bsdPathAsCFString ) {
882 size_t devPathLength;
883 strcpy( bsdPath, _PATH_DEV );
884 strcat( bsdPath, "r" );
885 devPathLength = strlen( bsdPath );
886 if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) {
887 kernResult = KERN_SUCCESS;
889 CFRelease( bsdPathAsCFString );
891 IOObjectRelease( nextMedia );
899 static int hdev_open(BlockDriverState *bs, const char *filename, int flags)
901 BDRVRawState *s = bs->opaque;
902 int fd, open_flags, ret;
907 if (strstart(filename, "/dev/cdrom", NULL)) {
908 kern_return_t kernResult;
909 io_iterator_t mediaIterator;
910 char bsdPath[ MAXPATHLEN ];
913 kernResult = FindEjectableCDMedia( &mediaIterator );
914 kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) );
916 if ( bsdPath[ 0 ] != '\0' ) {
917 strcat(bsdPath,"s0");
918 /* some CDs don't have a partition 0 */
919 fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE);
921 bsdPath[strlen(bsdPath)-1] = '1';
929 IOObjectRelease( mediaIterator );
932 open_flags = O_BINARY;
933 if ((flags & BDRV_O_ACCESS) == O_RDWR) {
934 open_flags |= O_RDWR;
936 open_flags |= O_RDONLY;
939 /* Use O_DSYNC for write-through caching, no flags for write-back caching,
940 * and O_DIRECT for no caching. */
941 if ((flags & BDRV_O_NOCACHE))
942 open_flags |= O_DIRECT;
943 else if (!(flags & BDRV_O_CACHE_WB))
944 open_flags |= O_DSYNC;
946 s->type = FTYPE_FILE;
947 #if defined(__linux__)
948 if (strstart(filename, "/dev/cd", NULL)) {
949 /* open will not fail even if no CD is inserted */
950 open_flags |= O_NONBLOCK;
952 } else if (strstart(filename, "/dev/fd", NULL)) {
954 s->fd_open_flags = open_flags;
955 /* open will not fail even if no floppy is inserted */
956 open_flags |= O_NONBLOCK;
957 } else if (strstart(filename, "/dev/sg", NULL)) {
961 fd = open(filename, open_flags, 0644);
969 #if defined(__linux__)
970 /* close fd so that we can reopen it as needed */
971 if (s->type == FTYPE_FD) {
974 s->fd_media_changed = 1;
980 #if defined(__linux__)
981 /* Note: we do not have a reliable method to detect if the floppy is
982 present. The current method is to try to open the floppy at every
983 I/O and to keep it opened during a few hundreds of ms. */
984 static int fd_open(BlockDriverState *bs)
986 BDRVRawState *s = bs->opaque;
987 int last_media_present;
989 if (s->type != FTYPE_FD)
991 last_media_present = (s->fd >= 0);
993 (qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) {
997 printf("Floppy closed\n");
1001 if (s->fd_got_error &&
1002 (qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) {
1004 printf("No floppy (open delayed)\n");
1008 s->fd = open(bs->filename, s->fd_open_flags);
1010 s->fd_error_time = qemu_get_clock(rt_clock);
1011 s->fd_got_error = 1;
1012 if (last_media_present)
1013 s->fd_media_changed = 1;
1015 printf("No floppy\n");
1020 printf("Floppy opened\n");
1023 if (!last_media_present)
1024 s->fd_media_changed = 1;
1025 s->fd_open_time = qemu_get_clock(rt_clock);
1026 s->fd_got_error = 0;
1030 static int raw_is_inserted(BlockDriverState *bs)
1032 BDRVRawState *s = bs->opaque;
1037 ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT);
1038 if (ret == CDS_DISC_OK)
1051 /* currently only used by fdc.c, but a CD version would be good too */
1052 static int raw_media_changed(BlockDriverState *bs)
1054 BDRVRawState *s = bs->opaque;
1060 /* XXX: we do not have a true media changed indication. It
1061 does not work if the floppy is changed without trying
1064 ret = s->fd_media_changed;
1065 s->fd_media_changed = 0;
1067 printf("Floppy changed=%d\n", ret);
1076 static int raw_eject(BlockDriverState *bs, int eject_flag)
1078 BDRVRawState *s = bs->opaque;
1083 if (ioctl (s->fd, CDROMEJECT, NULL) < 0)
1084 perror("CDROMEJECT");
1086 if (ioctl (s->fd, CDROMCLOSETRAY, NULL) < 0)
1087 perror("CDROMEJECT");
1097 fd = open(bs->filename, s->fd_open_flags | O_NONBLOCK);
1099 if (ioctl(fd, FDEJECT, 0) < 0)
1111 static int raw_set_locked(BlockDriverState *bs, int locked)
1113 BDRVRawState *s = bs->opaque;
1117 if (ioctl (s->fd, CDROM_LOCKDOOR, locked) < 0) {
1118 /* Note: an error can happen if the distribution automatically
1119 mounts the CD-ROM */
1120 // perror("CDROM_LOCKDOOR");
1129 static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf)
1131 BDRVRawState *s = bs->opaque;
1133 return ioctl(s->fd, req, buf);
1137 static int fd_open(BlockDriverState *bs)
1142 static int raw_is_inserted(BlockDriverState *bs)
1147 static int raw_media_changed(BlockDriverState *bs)
1152 static int raw_eject(BlockDriverState *bs, int eject_flag)
1157 static int raw_set_locked(BlockDriverState *bs, int locked)
1162 static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf)
1168 BlockDriver bdrv_host_device = {
1170 sizeof(BDRVRawState),
1171 NULL, /* no probe for protocols */
1180 .bdrv_aio_read = raw_aio_read,
1181 .bdrv_aio_write = raw_aio_write,
1182 .bdrv_aio_cancel = raw_aio_cancel,
1183 .aiocb_size = sizeof(RawAIOCB),
1186 .bdrv_pread = raw_pread,
1187 .bdrv_pwrite = raw_pwrite,
1188 .bdrv_getlength = raw_getlength,
1190 /* removable device support */
1191 .bdrv_is_inserted = raw_is_inserted,
1192 .bdrv_media_changed = raw_media_changed,
1193 .bdrv_eject = raw_eject,
1194 .bdrv_set_locked = raw_set_locked,
1195 /* generic scsi device */
1196 .bdrv_ioctl = raw_ioctl,