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 #if !defined(QEMU_IMG) && !defined(QEMU_NBD)
26 #include "qemu-timer.h"
28 #include "qemu-char.h"
30 #include "block_int.h"
39 #include <sys/param.h>
40 #include <IOKit/IOKitLib.h>
41 #include <IOKit/IOBSD.h>
42 #include <IOKit/storage/IOMediaBSDClient.h>
43 #include <IOKit/storage/IOMedia.h>
44 #include <IOKit/storage/IOCDMedia.h>
45 //#include <IOKit/storage/IOCDTypes.h>
46 #include <CoreFoundation/CoreFoundation.h>
50 #define _POSIX_PTHREAD_SEMANTICS 1
55 #include <sys/ioctl.h>
56 #include <linux/cdrom.h>
65 #include <sys/ioctl.h>
66 #include <sys/disklabel.h>
70 //#define DEBUG_FLOPPY
73 #if defined(DEBUG_BLOCK) && !defined(QEMU_IMG) && !defined(QEMU_NBD)
74 #define DEBUG_BLOCK_PRINT(formatCstr, args...) do { if (loglevel != 0) \
75 { fprintf(logfile, formatCstr, ##args); fflush(logfile); } } while (0)
77 #define DEBUG_BLOCK_PRINT(formatCstr, args...)
84 #define ALIGNED_BUFFER_SIZE (32 * 512)
86 /* if the FD is not accessed during that time (in ms), we try to
87 reopen it to see if the disk has been changed */
88 #define FD_OPEN_TIMEOUT 1000
90 typedef struct BDRVRawState {
93 unsigned int lseek_err_cnt;
94 #if defined(__linux__)
95 /* linux floppy specific */
98 int64_t fd_error_time;
100 int fd_media_changed;
102 #if defined(O_DIRECT) && !defined(QEMU_IMG)
103 uint8_t* aligned_buf;
107 static int fd_open(BlockDriverState *bs);
109 static int raw_open(BlockDriverState *bs, const char *filename, int flags)
111 BDRVRawState *s = bs->opaque;
112 int fd, open_flags, ret;
114 s->lseek_err_cnt = 0;
116 open_flags = O_BINARY;
117 if ((flags & BDRV_O_ACCESS) == O_RDWR) {
118 open_flags |= O_RDWR;
120 open_flags |= O_RDONLY;
123 if (flags & BDRV_O_CREAT)
124 open_flags |= O_CREAT | O_TRUNC;
126 if (flags & BDRV_O_DIRECT)
127 open_flags |= O_DIRECT;
130 s->type = FTYPE_FILE;
132 fd = open(filename, open_flags, 0644);
140 #if defined(O_DIRECT) && !defined(QEMU_IMG)
141 s->aligned_buf = NULL;
142 if (flags & BDRV_O_DIRECT) {
143 s->aligned_buf = qemu_memalign(512, ALIGNED_BUFFER_SIZE);
144 if (s->aligned_buf == NULL) {
154 /* XXX: use host sector size if necessary with:
155 #ifdef DIOCGSECTORSIZE
157 unsigned int sectorsize = 512;
158 if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) &&
159 sectorsize > bufsize)
160 bufsize = sectorsize;
164 u_int32_t blockSize = 512;
165 if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) {
172 * offset and count are in bytes, but must be multiples of 512 for files
173 * opened with O_DIRECT. buf must be aligned to 512 bytes then.
175 * This function may be called without alignment if the caller ensures
176 * that O_DIRECT is not in effect.
178 static int raw_pread_aligned(BlockDriverState *bs, int64_t offset,
179 uint8_t *buf, int count)
181 BDRVRawState *s = bs->opaque;
188 if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) {
189 ++(s->lseek_err_cnt);
190 if(s->lseek_err_cnt <= 10) {
191 DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
192 "] lseek failed : %d = %s\n",
193 s->fd, bs->filename, offset, buf, count,
194 bs->total_sectors, errno, strerror(errno));
200 ret = read(s->fd, buf, count);
202 goto label__raw_read__success;
204 DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
205 "] read failed %d : %d = %s\n",
206 s->fd, bs->filename, offset, buf, count,
207 bs->total_sectors, ret, errno, strerror(errno));
209 /* Try harder for CDrom. */
210 if (bs->type == BDRV_TYPE_CDROM) {
211 lseek(s->fd, offset, SEEK_SET);
212 ret = read(s->fd, buf, count);
214 goto label__raw_read__success;
215 lseek(s->fd, offset, SEEK_SET);
216 ret = read(s->fd, buf, count);
218 goto label__raw_read__success;
220 DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
221 "] retry read failed %d : %d = %s\n",
222 s->fd, bs->filename, offset, buf, count,
223 bs->total_sectors, ret, errno, strerror(errno));
226 label__raw_read__success:
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_pwrite_aligned(BlockDriverState *bs, int64_t offset,
239 const 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) {
251 DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%"
252 PRId64 "] lseek failed : %d = %s\n",
253 s->fd, bs->filename, offset, buf, count,
254 bs->total_sectors, errno, strerror(errno));
258 s->lseek_err_cnt = 0;
260 ret = write(s->fd, buf, count);
262 goto label__raw_write__success;
264 DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
265 "] write failed %d : %d = %s\n",
266 s->fd, bs->filename, offset, buf, count,
267 bs->total_sectors, ret, errno, strerror(errno));
269 label__raw_write__success:
275 #if defined(O_DIRECT) && !defined(QEMU_IMG)
277 * offset and count are in bytes and possibly not aligned. For files opened
278 * with O_DIRECT, necessary alignments are ensured before calling
279 * raw_pread_aligned to do the actual read.
281 static int raw_pread(BlockDriverState *bs, int64_t offset,
282 uint8_t *buf, int count)
284 BDRVRawState *s = bs->opaque;
285 int size, ret, shift, sum;
289 if (s->aligned_buf != NULL) {
291 if (offset & 0x1ff) {
292 /* align offset on a 512 bytes boundary */
294 shift = offset & 0x1ff;
295 size = (shift + count + 0x1ff) & ~0x1ff;
296 if (size > ALIGNED_BUFFER_SIZE)
297 size = ALIGNED_BUFFER_SIZE;
298 ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, size);
305 memcpy(buf, s->aligned_buf + shift, size);
315 if (count & 0x1ff || (uintptr_t) buf & 0x1ff) {
317 /* read on aligned buffer */
321 size = (count + 0x1ff) & ~0x1ff;
322 if (size > ALIGNED_BUFFER_SIZE)
323 size = ALIGNED_BUFFER_SIZE;
325 ret = raw_pread_aligned(bs, offset, s->aligned_buf, size);
333 memcpy(buf, s->aligned_buf, size);
345 return raw_pread_aligned(bs, offset, buf, count) + sum;
349 * offset and count are in bytes and possibly not aligned. For files opened
350 * with O_DIRECT, necessary alignments are ensured before calling
351 * raw_pwrite_aligned to do the actual write.
353 static int raw_pwrite(BlockDriverState *bs, int64_t offset,
354 const uint8_t *buf, int count)
356 BDRVRawState *s = bs->opaque;
357 int size, ret, shift, sum;
361 if (s->aligned_buf != NULL) {
363 if (offset & 0x1ff) {
364 /* align offset on a 512 bytes boundary */
365 shift = offset & 0x1ff;
366 ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, 512);
373 memcpy(s->aligned_buf + shift, buf, size);
375 ret = raw_pwrite_aligned(bs, offset - shift, s->aligned_buf, 512);
387 if (count & 0x1ff || (uintptr_t) buf & 0x1ff) {
389 while ((size = (count & ~0x1ff)) != 0) {
391 if (size > ALIGNED_BUFFER_SIZE)
392 size = ALIGNED_BUFFER_SIZE;
394 memcpy(s->aligned_buf, buf, size);
396 ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, size);
405 /* here, count < 512 because (count & ~0x1ff) == 0 */
407 ret = raw_pread_aligned(bs, offset, s->aligned_buf, 512);
410 memcpy(s->aligned_buf, buf, count);
412 ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, 512);
423 return raw_pwrite_aligned(bs, offset, buf, count) + sum;
427 #define raw_pread raw_pread_aligned
428 #define raw_pwrite raw_pwrite_aligned
433 /***********************************************************/
434 /* Unix AIO using POSIX AIO */
436 typedef struct RawAIOCB {
437 BlockDriverAIOCB common;
439 struct RawAIOCB *next;
443 static int aio_sig_fd = -1;
444 static int aio_sig_num = SIGUSR2;
445 static RawAIOCB *first_aio; /* AIO issued */
446 static int aio_initialized = 0;
448 static void qemu_aio_poll(void *opaque)
450 RawAIOCB *acb, **pacb;
454 struct qemu_signalfd_siginfo siginfo;
458 /* try to read from signalfd, don't freak out if we can't read anything */
460 while (offset < 128) {
463 len = read(aio_sig_fd, sig.buf + offset, 128 - offset);
464 if (len == -1 && errno == EINTR)
466 if (len == -1 && errno == EAGAIN) {
467 /* there is no natural reason for this to happen,
468 * so we'll spin hard until we get everything just
469 * to be on the safe side. */
483 ret = aio_error(&acb->aiocb);
484 if (ret == ECANCELED) {
485 /* remove the request */
487 qemu_aio_release(acb);
488 } else if (ret != EINPROGRESS) {
491 ret = aio_return(&acb->aiocb);
492 if (ret == acb->aiocb.aio_nbytes)
499 /* remove the request */
501 /* call the callback */
502 acb->common.cb(acb->common.opaque, ret);
503 qemu_aio_release(acb);
513 void qemu_aio_init(void)
519 /* Make sure to block AIO signal */
521 sigaddset(&mask, aio_sig_num);
522 sigprocmask(SIG_BLOCK, &mask, NULL);
524 aio_sig_fd = qemu_signalfd(&mask);
526 fcntl(aio_sig_fd, F_SETFL, O_NONBLOCK);
528 #if !defined(QEMU_IMG) && !defined(QEMU_NBD)
529 qemu_set_fd_handler2(aio_sig_fd, NULL, qemu_aio_poll, NULL, NULL);
532 #if defined(__GLIBC__) && defined(__linux__)
534 /* XXX: aio thread exit seems to hang on RedHat 9 and this init
535 seems to fix the problem. */
537 memset(&ai, 0, sizeof(ai));
540 ai.aio_idle_time = 365 * 100000;
546 /* Wait for all IO requests to complete. */
547 void qemu_aio_flush(void)
555 void qemu_aio_wait(void)
559 #if !defined(QEMU_IMG) && !defined(QEMU_NBD)
568 FD_SET(aio_sig_fd, &rdfds);
570 ret = select(aio_sig_fd + 1, &rdfds, NULL, NULL, NULL);
571 if (ret == -1 && errno == EINTR)
578 static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
579 int64_t sector_num, uint8_t *buf, int nb_sectors,
580 BlockDriverCompletionFunc *cb, void *opaque)
582 BDRVRawState *s = bs->opaque;
588 acb = qemu_aio_get(bs, cb, opaque);
591 acb->aiocb.aio_fildes = s->fd;
592 acb->aiocb.aio_sigevent.sigev_signo = aio_sig_num;
593 acb->aiocb.aio_sigevent.sigev_notify = SIGEV_SIGNAL;
594 acb->aiocb.aio_buf = buf;
596 acb->aiocb.aio_nbytes = -nb_sectors;
598 acb->aiocb.aio_nbytes = nb_sectors * 512;
599 acb->aiocb.aio_offset = sector_num * 512;
600 acb->next = first_aio;
605 #if !defined(QEMU_IMG) && !defined(QEMU_NBD)
606 static void raw_aio_em_cb(void* opaque)
608 RawAIOCB *acb = opaque;
609 acb->common.cb(acb->common.opaque, acb->ret);
610 qemu_aio_release(acb);
614 static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
615 int64_t sector_num, uint8_t *buf, int nb_sectors,
616 BlockDriverCompletionFunc *cb, void *opaque)
621 * If O_DIRECT is used and the buffer is not aligned fall back
624 #if defined(O_DIRECT) && !defined(QEMU_IMG) && !defined(QEMU_NBD)
625 BDRVRawState *s = bs->opaque;
627 if (unlikely(s->aligned_buf != NULL && ((uintptr_t) buf % 512))) {
629 acb = qemu_aio_get(bs, cb, opaque);
630 acb->ret = raw_pread(bs, 512 * sector_num, buf, 512 * nb_sectors);
631 bh = qemu_bh_new(raw_aio_em_cb, acb);
632 qemu_bh_schedule(bh);
637 acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque);
640 if (aio_read(&acb->aiocb) < 0) {
641 qemu_aio_release(acb);
647 static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
648 int64_t sector_num, const uint8_t *buf, int nb_sectors,
649 BlockDriverCompletionFunc *cb, void *opaque)
654 * If O_DIRECT is used and the buffer is not aligned fall back
657 #if defined(O_DIRECT) && !defined(QEMU_IMG) && !defined(QEMU_NBD)
658 BDRVRawState *s = bs->opaque;
660 if (unlikely(s->aligned_buf != NULL && ((uintptr_t) buf % 512))) {
662 acb = qemu_aio_get(bs, cb, opaque);
663 acb->ret = raw_pwrite(bs, 512 * sector_num, buf, 512 * nb_sectors);
664 bh = qemu_bh_new(raw_aio_em_cb, acb);
665 qemu_bh_schedule(bh);
670 acb = raw_aio_setup(bs, sector_num, (uint8_t*)buf, nb_sectors, cb, opaque);
673 if (aio_write(&acb->aiocb) < 0) {
674 qemu_aio_release(acb);
680 static void raw_aio_cancel(BlockDriverAIOCB *blockacb)
683 RawAIOCB *acb = (RawAIOCB *)blockacb;
686 ret = aio_cancel(acb->aiocb.aio_fildes, &acb->aiocb);
687 if (ret == AIO_NOTCANCELED) {
688 /* fail safe: if the aio could not be canceled, we wait for
690 while (aio_error(&acb->aiocb) == EINPROGRESS);
693 /* remove the callback from the queue */
698 } else if (*pacb == acb) {
700 qemu_aio_release(acb);
707 # else /* CONFIG_AIO */
709 void qemu_aio_init(void)
713 void qemu_aio_flush(void)
717 void qemu_aio_wait(void)
719 #if !defined(QEMU_IMG) && !defined(QEMU_NBD)
724 #endif /* CONFIG_AIO */
726 static void raw_close(BlockDriverState *bs)
728 BDRVRawState *s = bs->opaque;
732 #if defined(O_DIRECT) && !defined(QEMU_IMG)
733 if (s->aligned_buf != NULL)
734 qemu_free(s->aligned_buf);
739 static int raw_truncate(BlockDriverState *bs, int64_t offset)
741 BDRVRawState *s = bs->opaque;
742 if (s->type != FTYPE_FILE)
744 if (ftruncate(s->fd, offset) < 0)
750 static int64_t raw_getlength(BlockDriverState *bs)
752 BDRVRawState *s = bs->opaque;
758 if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) {
761 if (ioctl(fd, DIOCGDINFO, &dl))
763 return (uint64_t)dl.d_secsize *
764 dl.d_partitions[DISKPART(st.st_rdev)].p_size;
768 #else /* !__OpenBSD__ */
769 static int64_t raw_getlength(BlockDriverState *bs)
771 BDRVRawState *s = bs->opaque;
778 struct dk_minfo minfo;
788 if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
789 #ifdef DIOCGMEDIASIZE
790 if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
793 size = LONG_LONG_MAX;
795 size = lseek(fd, 0LL, SEEK_END);
801 * use the DKIOCGMEDIAINFO ioctl to read the size.
803 rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo );
805 size = minfo.dki_lbsize * minfo.dki_capacity;
806 } else /* there are reports that lseek on some devices
807 fails, but irc discussion said that contingency
808 on contingency was overkill */
811 size = lseek(fd, 0, SEEK_END);
817 static int raw_create(const char *filename, int64_t total_size,
818 const char *backing_file, int flags)
822 if (flags || backing_file)
825 fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
829 ftruncate(fd, total_size * 512);
834 static void raw_flush(BlockDriverState *bs)
836 BDRVRawState *s = bs->opaque;
840 BlockDriver bdrv_raw = {
842 sizeof(BDRVRawState),
843 NULL, /* no probe for protocols */
852 .bdrv_aio_read = raw_aio_read,
853 .bdrv_aio_write = raw_aio_write,
854 .bdrv_aio_cancel = raw_aio_cancel,
855 .aiocb_size = sizeof(RawAIOCB),
857 .protocol_name = "file",
858 .bdrv_pread = raw_pread,
859 .bdrv_pwrite = raw_pwrite,
860 .bdrv_truncate = raw_truncate,
861 .bdrv_getlength = raw_getlength,
864 /***********************************************/
868 static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator );
869 static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize );
871 kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator )
873 kern_return_t kernResult;
874 mach_port_t masterPort;
875 CFMutableDictionaryRef classesToMatch;
877 kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort );
878 if ( KERN_SUCCESS != kernResult ) {
879 printf( "IOMasterPort returned %d\n", kernResult );
882 classesToMatch = IOServiceMatching( kIOCDMediaClass );
883 if ( classesToMatch == NULL ) {
884 printf( "IOServiceMatching returned a NULL dictionary.\n" );
886 CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue );
888 kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator );
889 if ( KERN_SUCCESS != kernResult )
891 printf( "IOServiceGetMatchingServices returned %d\n", kernResult );
897 kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize )
899 io_object_t nextMedia;
900 kern_return_t kernResult = KERN_FAILURE;
902 nextMedia = IOIteratorNext( mediaIterator );
905 CFTypeRef bsdPathAsCFString;
906 bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 );
907 if ( bsdPathAsCFString ) {
908 size_t devPathLength;
909 strcpy( bsdPath, _PATH_DEV );
910 strcat( bsdPath, "r" );
911 devPathLength = strlen( bsdPath );
912 if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) {
913 kernResult = KERN_SUCCESS;
915 CFRelease( bsdPathAsCFString );
917 IOObjectRelease( nextMedia );
925 static int hdev_open(BlockDriverState *bs, const char *filename, int flags)
927 BDRVRawState *s = bs->opaque;
928 int fd, open_flags, ret;
931 if (strstart(filename, "/dev/cdrom", NULL)) {
932 kern_return_t kernResult;
933 io_iterator_t mediaIterator;
934 char bsdPath[ MAXPATHLEN ];
937 kernResult = FindEjectableCDMedia( &mediaIterator );
938 kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) );
940 if ( bsdPath[ 0 ] != '\0' ) {
941 strcat(bsdPath,"s0");
942 /* some CDs don't have a partition 0 */
943 fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE);
945 bsdPath[strlen(bsdPath)-1] = '1';
953 IOObjectRelease( mediaIterator );
956 open_flags = O_BINARY;
957 if ((flags & BDRV_O_ACCESS) == O_RDWR) {
958 open_flags |= O_RDWR;
960 open_flags |= O_RDONLY;
964 if (flags & BDRV_O_DIRECT)
965 open_flags |= O_DIRECT;
968 s->type = FTYPE_FILE;
969 #if defined(__linux__)
970 if (strstart(filename, "/dev/cd", NULL)) {
971 /* open will not fail even if no CD is inserted */
972 open_flags |= O_NONBLOCK;
974 } else if (strstart(filename, "/dev/fd", NULL)) {
976 s->fd_open_flags = open_flags;
977 /* open will not fail even if no floppy is inserted */
978 open_flags |= O_NONBLOCK;
979 } else if (strstart(filename, "/dev/sg", NULL)) {
983 fd = open(filename, open_flags, 0644);
991 #if defined(__linux__)
992 /* close fd so that we can reopen it as needed */
993 if (s->type == FTYPE_FD) {
996 s->fd_media_changed = 1;
1002 #if defined(__linux__) && !defined(QEMU_IMG) && !defined(QEMU_NBD)
1004 /* Note: we do not have a reliable method to detect if the floppy is
1005 present. The current method is to try to open the floppy at every
1006 I/O and to keep it opened during a few hundreds of ms. */
1007 static int fd_open(BlockDriverState *bs)
1009 BDRVRawState *s = bs->opaque;
1010 int last_media_present;
1012 if (s->type != FTYPE_FD)
1014 last_media_present = (s->fd >= 0);
1016 (qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) {
1020 printf("Floppy closed\n");
1024 if (s->fd_got_error &&
1025 (qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) {
1027 printf("No floppy (open delayed)\n");
1031 s->fd = open(bs->filename, s->fd_open_flags);
1033 s->fd_error_time = qemu_get_clock(rt_clock);
1034 s->fd_got_error = 1;
1035 if (last_media_present)
1036 s->fd_media_changed = 1;
1038 printf("No floppy\n");
1043 printf("Floppy opened\n");
1046 if (!last_media_present)
1047 s->fd_media_changed = 1;
1048 s->fd_open_time = qemu_get_clock(rt_clock);
1049 s->fd_got_error = 0;
1053 static int fd_open(BlockDriverState *bs)
1059 #if defined(__linux__)
1061 static int raw_is_inserted(BlockDriverState *bs)
1063 BDRVRawState *s = bs->opaque;
1068 ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT);
1069 if (ret == CDS_DISC_OK)
1082 /* currently only used by fdc.c, but a CD version would be good too */
1083 static int raw_media_changed(BlockDriverState *bs)
1085 BDRVRawState *s = bs->opaque;
1091 /* XXX: we do not have a true media changed indication. It
1092 does not work if the floppy is changed without trying
1095 ret = s->fd_media_changed;
1096 s->fd_media_changed = 0;
1098 printf("Floppy changed=%d\n", ret);
1107 static int raw_eject(BlockDriverState *bs, int eject_flag)
1109 BDRVRawState *s = bs->opaque;
1114 if (ioctl (s->fd, CDROMEJECT, NULL) < 0)
1115 perror("CDROMEJECT");
1117 if (ioctl (s->fd, CDROMCLOSETRAY, NULL) < 0)
1118 perror("CDROMEJECT");
1128 fd = open(bs->filename, s->fd_open_flags | O_NONBLOCK);
1130 if (ioctl(fd, FDEJECT, 0) < 0)
1142 static int raw_set_locked(BlockDriverState *bs, int locked)
1144 BDRVRawState *s = bs->opaque;
1148 if (ioctl (s->fd, CDROM_LOCKDOOR, locked) < 0) {
1149 /* Note: an error can happen if the distribution automatically
1150 mounts the CD-ROM */
1151 // perror("CDROM_LOCKDOOR");
1160 static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf)
1162 BDRVRawState *s = bs->opaque;
1164 return ioctl(s->fd, req, buf);
1168 static int raw_is_inserted(BlockDriverState *bs)
1173 static int raw_media_changed(BlockDriverState *bs)
1178 static int raw_eject(BlockDriverState *bs, int eject_flag)
1183 static int raw_set_locked(BlockDriverState *bs, int locked)
1188 static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf)
1194 BlockDriver bdrv_host_device = {
1196 sizeof(BDRVRawState),
1197 NULL, /* no probe for protocols */
1206 .bdrv_aio_read = raw_aio_read,
1207 .bdrv_aio_write = raw_aio_write,
1208 .bdrv_aio_cancel = raw_aio_cancel,
1209 .aiocb_size = sizeof(RawAIOCB),
1211 .bdrv_pread = raw_pread,
1212 .bdrv_pwrite = raw_pwrite,
1213 .bdrv_getlength = raw_getlength,
1215 /* removable device support */
1216 .bdrv_is_inserted = raw_is_inserted,
1217 .bdrv_media_changed = raw_media_changed,
1218 .bdrv_eject = raw_eject,
1219 .bdrv_set_locked = raw_set_locked,
1220 /* generic scsi device */
1221 .bdrv_ioctl = raw_ioctl,