2 * Block driver for RAW files
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
25 #include "block_int.h"
36 #include <sys/param.h>
37 #include <IOKit/IOKitLib.h>
38 #include <IOKit/IOBSD.h>
39 #include <IOKit/storage/IOMediaBSDClient.h>
40 #include <IOKit/storage/IOMedia.h>
41 #include <IOKit/storage/IOCDMedia.h>
42 //#include <IOKit/storage/IOCDTypes.h>
43 #include <CoreFoundation/CoreFoundation.h>
47 #define _POSIX_PTHREAD_SEMANTICS 1
52 #include <sys/ioctl.h>
53 #include <linux/cdrom.h>
60 //#define DEBUG_FLOPPY
66 /* if the FD is not accessed during that time (in ms), we try to
67 reopen it to see if the disk has been changed */
68 #define FD_OPEN_TIMEOUT 1000
70 typedef struct BDRVRawState {
73 #if defined(__linux__)
74 /* linux floppy specific */
77 int64_t fd_error_time;
83 static int fd_open(BlockDriverState *bs);
85 static int raw_open(BlockDriverState *bs, const char *filename, int flags)
87 BDRVRawState *s = bs->opaque;
88 int fd, open_flags, ret;
90 open_flags = O_BINARY;
91 if ((flags & BDRV_O_ACCESS) == O_RDWR) {
94 open_flags |= O_RDONLY;
97 if (flags & BDRV_O_CREAT)
98 open_flags |= O_CREAT | O_TRUNC;
100 s->type = FTYPE_FILE;
102 fd = open(filename, open_flags, 0644);
113 /* XXX: use host sector size if necessary with:
114 #ifdef DIOCGSECTORSIZE
116 unsigned int sectorsize = 512;
117 if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) &&
118 sectorsize > bufsize)
119 bufsize = sectorsize;
123 u_int32_t blockSize = 512;
124 if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) {
130 static int raw_pread(BlockDriverState *bs, int64_t offset,
131 uint8_t *buf, int count)
133 BDRVRawState *s = bs->opaque;
140 lseek(s->fd, offset, SEEK_SET);
141 ret = read(s->fd, buf, count);
145 static int raw_pwrite(BlockDriverState *bs, int64_t offset,
146 const uint8_t *buf, int count)
148 BDRVRawState *s = bs->opaque;
155 lseek(s->fd, offset, SEEK_SET);
156 ret = write(s->fd, buf, count);
160 /***********************************************************/
161 /* Unix AIO using POSIX AIO */
163 typedef struct RawAIOCB {
164 BlockDriverAIOCB common;
166 struct RawAIOCB *next;
169 static int aio_sig_num = SIGUSR2;
170 static RawAIOCB *first_aio; /* AIO issued */
171 static int aio_initialized = 0;
173 static void aio_signal_handler(int signum)
176 CPUState *env = cpu_single_env;
178 /* stop the currently executing cpu because a timer occured */
179 cpu_interrupt(env, CPU_INTERRUPT_EXIT);
181 if (env->kqemu_enabled) {
182 kqemu_cpu_interrupt(env);
189 void qemu_aio_init(void)
191 struct sigaction act;
195 sigfillset(&act.sa_mask);
196 act.sa_flags = 0; /* do not restart syscalls to interrupt select() */
197 act.sa_handler = aio_signal_handler;
198 sigaction(aio_sig_num, &act, NULL);
200 #if defined(__GLIBC__) && defined(__linux__)
202 /* XXX: aio thread exit seems to hang on RedHat 9 and this init
203 seems to fix the problem. */
205 memset(&ai, 0, sizeof(ai));
208 ai.aio_idle_time = 365 * 100000;
214 void qemu_aio_poll(void)
216 RawAIOCB *acb, **pacb;
225 ret = aio_error(&acb->aiocb);
226 if (ret == ECANCELED) {
227 /* remove the request */
229 qemu_aio_release(acb);
230 } else if (ret != EINPROGRESS) {
233 ret = aio_return(&acb->aiocb);
234 if (ret == acb->aiocb.aio_nbytes)
241 /* remove the request */
243 /* call the callback */
244 acb->common.cb(acb->common.opaque, ret);
245 qemu_aio_release(acb);
255 /* Wait for all IO requests to complete. */
256 void qemu_aio_flush(void)
258 qemu_aio_wait_start();
266 /* wait until at least one AIO was handled */
267 static sigset_t wait_oset;
269 void qemu_aio_wait_start(void)
273 if (!aio_initialized)
276 sigaddset(&set, aio_sig_num);
277 sigprocmask(SIG_BLOCK, &set, &wait_oset);
280 void qemu_aio_wait(void)
290 sigaddset(&set, aio_sig_num);
291 sigwait(&set, &nb_sigs);
295 void qemu_aio_wait_end(void)
297 sigprocmask(SIG_SETMASK, &wait_oset, NULL);
300 static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
301 int64_t sector_num, uint8_t *buf, int nb_sectors,
302 BlockDriverCompletionFunc *cb, void *opaque)
304 BDRVRawState *s = bs->opaque;
310 acb = qemu_aio_get(bs, cb, opaque);
313 acb->aiocb.aio_fildes = s->fd;
314 acb->aiocb.aio_sigevent.sigev_signo = aio_sig_num;
315 acb->aiocb.aio_sigevent.sigev_notify = SIGEV_SIGNAL;
316 acb->aiocb.aio_buf = buf;
317 acb->aiocb.aio_nbytes = nb_sectors * 512;
318 acb->aiocb.aio_offset = sector_num * 512;
319 acb->next = first_aio;
324 static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
325 int64_t sector_num, uint8_t *buf, int nb_sectors,
326 BlockDriverCompletionFunc *cb, void *opaque)
330 acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque);
333 if (aio_read(&acb->aiocb) < 0) {
334 qemu_aio_release(acb);
340 static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
341 int64_t sector_num, const uint8_t *buf, int nb_sectors,
342 BlockDriverCompletionFunc *cb, void *opaque)
346 acb = raw_aio_setup(bs, sector_num, (uint8_t*)buf, nb_sectors, cb, opaque);
349 if (aio_write(&acb->aiocb) < 0) {
350 qemu_aio_release(acb);
356 static void raw_aio_cancel(BlockDriverAIOCB *blockacb)
359 RawAIOCB *acb = (RawAIOCB *)blockacb;
362 ret = aio_cancel(acb->aiocb.aio_fildes, &acb->aiocb);
363 if (ret == AIO_NOTCANCELED) {
364 /* fail safe: if the aio could not be canceled, we wait for
366 while (aio_error(&acb->aiocb) == EINPROGRESS);
369 /* remove the callback from the queue */
374 } else if (*pacb == acb) {
376 qemu_aio_release(acb);
383 static void raw_close(BlockDriverState *bs)
385 BDRVRawState *s = bs->opaque;
392 static int raw_truncate(BlockDriverState *bs, int64_t offset)
394 BDRVRawState *s = bs->opaque;
395 if (s->type != FTYPE_FILE)
397 if (ftruncate(s->fd, offset) < 0)
402 static int64_t raw_getlength(BlockDriverState *bs)
404 BDRVRawState *s = bs->opaque;
411 struct dk_minfo minfo;
421 if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
422 #ifdef DIOCGMEDIASIZE
423 if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
426 size = LONG_LONG_MAX;
428 size = lseek(fd, 0LL, SEEK_END);
434 * use the DKIOCGMEDIAINFO ioctl to read the size.
436 rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo );
438 size = minfo.dki_lbsize * minfo.dki_capacity;
439 } else /* there are reports that lseek on some devices
440 fails, but irc discussion said that contingency
441 on contingency was overkill */
444 size = lseek(fd, 0, SEEK_END);
449 static int raw_create(const char *filename, int64_t total_size,
450 const char *backing_file, int flags)
454 if (flags || backing_file)
457 fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
461 ftruncate(fd, total_size * 512);
466 static void raw_flush(BlockDriverState *bs)
468 BDRVRawState *s = bs->opaque;
472 BlockDriver bdrv_raw = {
474 sizeof(BDRVRawState),
475 NULL, /* no probe for protocols */
483 .bdrv_aio_read = raw_aio_read,
484 .bdrv_aio_write = raw_aio_write,
485 .bdrv_aio_cancel = raw_aio_cancel,
486 .aiocb_size = sizeof(RawAIOCB),
487 .protocol_name = "file",
488 .bdrv_pread = raw_pread,
489 .bdrv_pwrite = raw_pwrite,
490 .bdrv_truncate = raw_truncate,
491 .bdrv_getlength = raw_getlength,
494 /***********************************************/
498 static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator );
499 static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize );
501 kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator )
503 kern_return_t kernResult;
504 mach_port_t masterPort;
505 CFMutableDictionaryRef classesToMatch;
507 kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort );
508 if ( KERN_SUCCESS != kernResult ) {
509 printf( "IOMasterPort returned %d\n", kernResult );
512 classesToMatch = IOServiceMatching( kIOCDMediaClass );
513 if ( classesToMatch == NULL ) {
514 printf( "IOServiceMatching returned a NULL dictionary.\n" );
516 CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue );
518 kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator );
519 if ( KERN_SUCCESS != kernResult )
521 printf( "IOServiceGetMatchingServices returned %d\n", kernResult );
527 kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize )
529 io_object_t nextMedia;
530 kern_return_t kernResult = KERN_FAILURE;
532 nextMedia = IOIteratorNext( mediaIterator );
535 CFTypeRef bsdPathAsCFString;
536 bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 );
537 if ( bsdPathAsCFString ) {
538 size_t devPathLength;
539 strcpy( bsdPath, _PATH_DEV );
540 strcat( bsdPath, "r" );
541 devPathLength = strlen( bsdPath );
542 if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) {
543 kernResult = KERN_SUCCESS;
545 CFRelease( bsdPathAsCFString );
547 IOObjectRelease( nextMedia );
555 static int hdev_open(BlockDriverState *bs, const char *filename, int flags)
557 BDRVRawState *s = bs->opaque;
558 int fd, open_flags, ret;
561 if (strstart(filename, "/dev/cdrom", NULL)) {
562 kern_return_t kernResult;
563 io_iterator_t mediaIterator;
564 char bsdPath[ MAXPATHLEN ];
567 kernResult = FindEjectableCDMedia( &mediaIterator );
568 kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) );
570 if ( bsdPath[ 0 ] != '\0' ) {
571 strcat(bsdPath,"s0");
572 /* some CDs don't have a partition 0 */
573 fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE);
575 bsdPath[strlen(bsdPath)-1] = '1';
583 IOObjectRelease( mediaIterator );
586 open_flags = O_BINARY;
587 if ((flags & BDRV_O_ACCESS) == O_RDWR) {
588 open_flags |= O_RDWR;
590 open_flags |= O_RDONLY;
594 s->type = FTYPE_FILE;
595 #if defined(__linux__)
596 if (strstart(filename, "/dev/cd", NULL)) {
597 /* open will not fail even if no CD is inserted */
598 open_flags |= O_NONBLOCK;
600 } else if (strstart(filename, "/dev/fd", NULL)) {
602 s->fd_open_flags = open_flags;
603 /* open will not fail even if no floppy is inserted */
604 open_flags |= O_NONBLOCK;
607 fd = open(filename, open_flags, 0644);
615 #if defined(__linux__)
616 /* close fd so that we can reopen it as needed */
617 if (s->type == FTYPE_FD) {
620 s->fd_media_changed = 1;
626 #if defined(__linux__) && !defined(QEMU_TOOL)
628 /* Note: we do not have a reliable method to detect if the floppy is
629 present. The current method is to try to open the floppy at every
630 I/O and to keep it opened during a few hundreds of ms. */
631 static int fd_open(BlockDriverState *bs)
633 BDRVRawState *s = bs->opaque;
634 int last_media_present;
636 if (s->type != FTYPE_FD)
638 last_media_present = (s->fd >= 0);
640 (qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) {
644 printf("Floppy closed\n");
648 if (s->fd_got_error &&
649 (qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) {
651 printf("No floppy (open delayed)\n");
655 s->fd = open(bs->filename, s->fd_open_flags);
657 s->fd_error_time = qemu_get_clock(rt_clock);
659 if (last_media_present)
660 s->fd_media_changed = 1;
662 printf("No floppy\n");
667 printf("Floppy opened\n");
670 if (!last_media_present)
671 s->fd_media_changed = 1;
672 s->fd_open_time = qemu_get_clock(rt_clock);
677 static int fd_open(BlockDriverState *bs)
683 #if defined(__linux__)
685 static int raw_is_inserted(BlockDriverState *bs)
687 BDRVRawState *s = bs->opaque;
692 ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT);
693 if (ret == CDS_DISC_OK)
706 /* currently only used by fdc.c, but a CD version would be good too */
707 static int raw_media_changed(BlockDriverState *bs)
709 BDRVRawState *s = bs->opaque;
715 /* XXX: we do not have a true media changed indication. It
716 does not work if the floppy is changed without trying
719 ret = s->fd_media_changed;
720 s->fd_media_changed = 0;
722 printf("Floppy changed=%d\n", ret);
731 static int raw_eject(BlockDriverState *bs, int eject_flag)
733 BDRVRawState *s = bs->opaque;
738 if (ioctl (s->fd, CDROMEJECT, NULL) < 0)
739 perror("CDROMEJECT");
741 if (ioctl (s->fd, CDROMCLOSETRAY, NULL) < 0)
742 perror("CDROMEJECT");
752 fd = open(bs->filename, s->fd_open_flags | O_NONBLOCK);
754 if (ioctl(fd, FDEJECT, 0) < 0)
766 static int raw_set_locked(BlockDriverState *bs, int locked)
768 BDRVRawState *s = bs->opaque;
772 if (ioctl (s->fd, CDROM_LOCKDOOR, locked) < 0) {
773 /* Note: an error can happen if the distribution automatically
775 // perror("CDROM_LOCKDOOR");
786 static int raw_is_inserted(BlockDriverState *bs)
791 static int raw_media_changed(BlockDriverState *bs)
796 static int raw_eject(BlockDriverState *bs, int eject_flag)
801 static int raw_set_locked(BlockDriverState *bs, int locked)
808 BlockDriver bdrv_host_device = {
810 sizeof(BDRVRawState),
811 NULL, /* no probe for protocols */
819 .bdrv_aio_read = raw_aio_read,
820 .bdrv_aio_write = raw_aio_write,
821 .bdrv_aio_cancel = raw_aio_cancel,
822 .aiocb_size = sizeof(RawAIOCB),
823 .bdrv_pread = raw_pread,
824 .bdrv_pwrite = raw_pwrite,
825 .bdrv_getlength = raw_getlength,
827 /* removable device support */
828 .bdrv_is_inserted = raw_is_inserted,
829 .bdrv_media_changed = raw_media_changed,
830 .bdrv_eject = raw_eject,
831 .bdrv_set_locked = raw_set_locked,
836 /* XXX: use another file ? */
837 #include <winioctl.h>
842 typedef struct BDRVRawState {
845 char drive_path[16]; /* format: "d:\" */
848 typedef struct RawAIOCB {
849 BlockDriverAIOCB common;
855 int qemu_ftruncate64(int fd, int64_t length)
862 if ((GetVersion() & 0x80000000UL) && (length >> 32) != 0)
865 h = (HANDLE)_get_osfhandle(fd);
867 /* get current position, ftruncate do not change position */
869 li.LowPart = SetFilePointer (h, 0, &li.HighPart, FILE_CURRENT);
870 if (li.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR)
874 if (!SetFilePointer(h, (DWORD) length, &high, FILE_BEGIN))
876 res = SetEndOfFile(h);
878 /* back to old position */
879 SetFilePointer(h, li.LowPart, &li.HighPart, FILE_BEGIN);
883 static int set_sparse(int fd)
886 return (int) DeviceIoControl((HANDLE)_get_osfhandle(fd), FSCTL_SET_SPARSE,
887 NULL, 0, NULL, 0, &returned, NULL);
890 static int raw_open(BlockDriverState *bs, const char *filename, int flags)
892 BDRVRawState *s = bs->opaque;
893 int access_flags, create_flags;
896 s->type = FTYPE_FILE;
898 if ((flags & BDRV_O_ACCESS) == O_RDWR) {
899 access_flags = GENERIC_READ | GENERIC_WRITE;
901 access_flags = GENERIC_READ;
903 if (flags & BDRV_O_CREAT) {
904 create_flags = CREATE_ALWAYS;
906 create_flags = OPEN_EXISTING;
911 overlapped = FILE_FLAG_OVERLAPPED;
913 s->hfile = CreateFile(filename, access_flags,
914 FILE_SHARE_READ, NULL,
915 create_flags, overlapped, 0);
916 if (s->hfile == INVALID_HANDLE_VALUE)
921 static int raw_pread(BlockDriverState *bs, int64_t offset,
922 uint8_t *buf, int count)
924 BDRVRawState *s = bs->opaque;
929 memset(&ov, 0, sizeof(ov));
931 ov.OffsetHigh = offset >> 32;
932 ret = ReadFile(s->hfile, buf, count, &ret_count, &ov);
934 ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE);
943 static int raw_pwrite(BlockDriverState *bs, int64_t offset,
944 const uint8_t *buf, int count)
946 BDRVRawState *s = bs->opaque;
951 memset(&ov, 0, sizeof(ov));
953 ov.OffsetHigh = offset >> 32;
954 ret = WriteFile(s->hfile, buf, count, &ret_count, &ov);
956 ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE);
966 static void raw_aio_cb(void *opaque)
968 RawAIOCB *acb = opaque;
969 BlockDriverState *bs = acb->common.bs;
970 BDRVRawState *s = bs->opaque;
974 ret = GetOverlappedResult(s->hfile, &acb->ov, &ret_count, TRUE);
975 if (!ret || ret_count != acb->count) {
976 acb->common.cb(acb->common.opaque, -EIO);
978 acb->common.cb(acb->common.opaque, 0);
983 static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
984 int64_t sector_num, uint8_t *buf, int nb_sectors,
985 BlockDriverCompletionFunc *cb, void *opaque)
990 acb = qemu_aio_get(bs, cb, opaque);
992 acb->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
994 qemu_aio_release(acb);
998 memset(&acb->ov, 0, sizeof(acb->ov));
999 offset = sector_num * 512;
1000 acb->ov.Offset = offset;
1001 acb->ov.OffsetHigh = offset >> 32;
1002 acb->ov.hEvent = acb->hEvent;
1003 acb->count = nb_sectors * 512;
1005 qemu_add_wait_object(acb->ov.hEvent, raw_aio_cb, acb);
1010 static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
1011 int64_t sector_num, uint8_t *buf, int nb_sectors,
1012 BlockDriverCompletionFunc *cb, void *opaque)
1014 BDRVRawState *s = bs->opaque;
1018 acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque);
1021 ret = ReadFile(s->hfile, buf, acb->count, NULL, &acb->ov);
1023 qemu_aio_release(acb);
1027 qemu_aio_release(acb);
1029 return (BlockDriverAIOCB *)acb;
1032 static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
1033 int64_t sector_num, uint8_t *buf, int nb_sectors,
1034 BlockDriverCompletionFunc *cb, void *opaque)
1036 BDRVRawState *s = bs->opaque;
1040 acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque);
1043 ret = WriteFile(s->hfile, buf, acb->count, NULL, &acb->ov);
1045 qemu_aio_release(acb);
1049 qemu_aio_release(acb);
1051 return (BlockDriverAIOCB *)acb;
1054 static void raw_aio_cancel(BlockDriverAIOCB *blockacb)
1057 RawAIOCB *acb = (RawAIOCB *)blockacb;
1058 BlockDriverState *bs = acb->common.bs;
1059 BDRVRawState *s = bs->opaque;
1061 qemu_del_wait_object(acb->ov.hEvent, raw_aio_cb, acb);
1062 /* XXX: if more than one async I/O it is not correct */
1064 qemu_aio_release(acb);
1068 static void raw_flush(BlockDriverState *bs)
1073 static void raw_close(BlockDriverState *bs)
1075 BDRVRawState *s = bs->opaque;
1076 CloseHandle(s->hfile);
1079 static int raw_truncate(BlockDriverState *bs, int64_t offset)
1081 BDRVRawState *s = bs->opaque;
1085 high = offset >> 32;
1086 if (!SetFilePointer(s->hfile, low, &high, FILE_BEGIN))
1088 if (!SetEndOfFile(s->hfile))
1093 static int64_t raw_getlength(BlockDriverState *bs)
1095 BDRVRawState *s = bs->opaque;
1097 ULARGE_INTEGER available, total, total_free;
1101 l.LowPart = GetFileSize(s->hfile, &l.HighPart);
1102 if (l.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR)
1106 if (!GetDiskFreeSpaceEx(s->drive_path, &available, &total, &total_free))
1108 l.QuadPart = total.QuadPart;
1116 static int raw_create(const char *filename, int64_t total_size,
1117 const char *backing_file, int flags)
1121 if (flags || backing_file)
1124 fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
1129 ftruncate(fd, total_size * 512);
1134 void qemu_aio_init(void)
1138 void qemu_aio_poll(void)
1142 void qemu_aio_flush(void)
1146 void qemu_aio_wait_start(void)
1150 void qemu_aio_wait(void)
1157 void qemu_aio_wait_end(void)
1161 BlockDriver bdrv_raw = {
1163 sizeof(BDRVRawState),
1164 NULL, /* no probe for protocols */
1173 .bdrv_aio_read = raw_aio_read,
1174 .bdrv_aio_write = raw_aio_write,
1175 .bdrv_aio_cancel = raw_aio_cancel,
1176 .aiocb_size = sizeof(RawAIOCB);
1178 .protocol_name = "file",
1179 .bdrv_pread = raw_pread,
1180 .bdrv_pwrite = raw_pwrite,
1181 .bdrv_truncate = raw_truncate,
1182 .bdrv_getlength = raw_getlength,
1185 /***********************************************/
1188 static int find_cdrom(char *cdrom_name, int cdrom_name_size)
1190 char drives[256], *pdrv = drives;
1193 memset(drives, 0, sizeof(drives));
1194 GetLogicalDriveStrings(sizeof(drives), drives);
1195 while(pdrv[0] != '\0') {
1196 type = GetDriveType(pdrv);
1199 snprintf(cdrom_name, cdrom_name_size, "\\\\.\\%c:", pdrv[0]);
1203 pdrv += lstrlen(pdrv) + 1;
1208 static int find_device_type(BlockDriverState *bs, const char *filename)
1210 BDRVRawState *s = bs->opaque;
1214 if (strstart(filename, "\\\\.\\", &p) ||
1215 strstart(filename, "//./", &p)) {
1216 snprintf(s->drive_path, sizeof(s->drive_path), "%c:\\", p[0]);
1217 type = GetDriveType(s->drive_path);
1218 if (type == DRIVE_CDROM)
1227 static int hdev_open(BlockDriverState *bs, const char *filename, int flags)
1229 BDRVRawState *s = bs->opaque;
1230 int access_flags, create_flags;
1232 char device_name[64];
1234 if (strstart(filename, "/dev/cdrom", NULL)) {
1235 if (find_cdrom(device_name, sizeof(device_name)) < 0)
1237 filename = device_name;
1239 /* transform drive letters into device name */
1240 if (((filename[0] >= 'a' && filename[0] <= 'z') ||
1241 (filename[0] >= 'A' && filename[0] <= 'Z')) &&
1242 filename[1] == ':' && filename[2] == '\0') {
1243 snprintf(device_name, sizeof(device_name), "\\\\.\\%c:", filename[0]);
1244 filename = device_name;
1247 s->type = find_device_type(bs, filename);
1249 if ((flags & BDRV_O_ACCESS) == O_RDWR) {
1250 access_flags = GENERIC_READ | GENERIC_WRITE;
1252 access_flags = GENERIC_READ;
1254 create_flags = OPEN_EXISTING;
1259 overlapped = FILE_FLAG_OVERLAPPED;
1261 s->hfile = CreateFile(filename, access_flags,
1262 FILE_SHARE_READ, NULL,
1263 create_flags, overlapped, 0);
1264 if (s->hfile == INVALID_HANDLE_VALUE)
1270 /***********************************************/
1271 /* removable device additionnal commands */
1273 static int raw_is_inserted(BlockDriverState *bs)
1278 static int raw_media_changed(BlockDriverState *bs)
1283 static int raw_eject(BlockDriverState *bs, int eject_flag)
1287 if (s->type == FTYPE_FILE)
1290 DeviceIoControl(s->hfile, IOCTL_STORAGE_EJECT_MEDIA,
1291 NULL, 0, NULL, 0, &lpBytesReturned, NULL);
1293 DeviceIoControl(s->hfile, IOCTL_STORAGE_LOAD_MEDIA,
1294 NULL, 0, NULL, 0, &lpBytesReturned, NULL);
1298 static int raw_set_locked(BlockDriverState *bs, int locked)
1304 BlockDriver bdrv_host_device = {
1306 sizeof(BDRVRawState),
1307 NULL, /* no probe for protocols */
1316 .bdrv_aio_read = raw_aio_read,
1317 .bdrv_aio_write = raw_aio_write,
1318 .bdrv_aio_cancel = raw_aio_cancel,
1319 .aiocb_size = sizeof(RawAIOCB);
1321 .bdrv_pread = raw_pread,
1322 .bdrv_pwrite = raw_pwrite,
1323 .bdrv_getlength = raw_getlength,