Split block-raw.c into block-raw-posix.c and block-raw-win32.c, by

Anthony Liguori.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3814 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 0 insertions, 1421 deletions

diff --git a/block-raw.c b/block-raw.c
deleted file mode 100644
index 732b4b8e03..0000000000
--- a/block-raw.c
+++ /dev/null
@@ -1,1421 +0,0 @@
-/*
- * Block driver for RAW files
- *
- * Copyright (c) 2006 Fabrice Bellard
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-#include "qemu-common.h"
-#ifndef QEMU_IMG
-#include "qemu-timer.h"
-#include "exec-all.h"
-#endif
-#include "block_int.h"
-#include <assert.h>
-#ifndef _WIN32
-#include <aio.h>
-
-#ifdef CONFIG_COCOA
-#include <paths.h>
-#include <sys/param.h>
-#include <IOKit/IOKitLib.h>
-#include <IOKit/IOBSD.h>
-#include <IOKit/storage/IOMediaBSDClient.h>
-#include <IOKit/storage/IOMedia.h>
-#include <IOKit/storage/IOCDMedia.h>
-//#include <IOKit/storage/IOCDTypes.h>
-#include <CoreFoundation/CoreFoundation.h>
-#endif
-
-#ifdef __sun__
-#define _POSIX_PTHREAD_SEMANTICS 1
-#include <signal.h>
-#include <sys/dkio.h>
-#endif
-#ifdef __linux__
-#include <sys/ioctl.h>
-#include <linux/cdrom.h>
-#include <linux/fd.h>
-#endif
-#ifdef __FreeBSD__
-#include <sys/disk.h>
-#endif
-
-//#define DEBUG_FLOPPY
-
-//#define DEBUG_BLOCK
-#if defined(DEBUG_BLOCK) && !defined(QEMU_IMG)
-#define DEBUG_BLOCK_PRINT(formatCstr, args...) do { if (loglevel != 0)	\
-    { fprintf(logfile, formatCstr, ##args); fflush(logfile); } } while (0)
-#else
-#define DEBUG_BLOCK_PRINT(formatCstr, args...)
-#endif
-
-#define FTYPE_FILE   0
-#define FTYPE_CD     1
-#define FTYPE_FD     2
-
-/* if the FD is not accessed during that time (in ms), we try to
-   reopen it to see if the disk has been changed */
-#define FD_OPEN_TIMEOUT 1000
-
-typedef struct BDRVRawState {
-    int fd;
-    int type;
-    unsigned int lseek_err_cnt;
-#if defined(__linux__)
-    /* linux floppy specific */
-    int fd_open_flags;
-    int64_t fd_open_time;
-    int64_t fd_error_time;
-    int fd_got_error;
-    int fd_media_changed;
-#endif
-} BDRVRawState;
-
-static int fd_open(BlockDriverState *bs);
-
-static int raw_open(BlockDriverState *bs, const char *filename, int flags)
-{
-    BDRVRawState *s = bs->opaque;
-    int fd, open_flags, ret;
-
-    s->lseek_err_cnt = 0;
-
-    open_flags = O_BINARY;
-    if ((flags & BDRV_O_ACCESS) == O_RDWR) {
-        open_flags |= O_RDWR;
-    } else {
-        open_flags |= O_RDONLY;
-        bs->read_only = 1;
-    }
-    if (flags & BDRV_O_CREAT)
-        open_flags |= O_CREAT | O_TRUNC;
-
-    s->type = FTYPE_FILE;
-
-    fd = open(filename, open_flags, 0644);
-    if (fd < 0) {
-        ret = -errno;
-        if (ret == -EROFS)
-            ret = -EACCES;
-        return ret;
-    }
-    s->fd = fd;
-    return 0;
-}
-
-/* XXX: use host sector size if necessary with:
-#ifdef DIOCGSECTORSIZE
-        {
-            unsigned int sectorsize = 512;
-            if (!ioctl(fd, DIOCGSECTORSIZE, &sectorsize) &&
-                sectorsize > bufsize)
-                bufsize = sectorsize;
-        }
-#endif
-#ifdef CONFIG_COCOA
-        u_int32_t   blockSize = 512;
-        if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) {
-            bufsize = blockSize;
-        }
-#endif
-*/
-
-static int raw_pread(BlockDriverState *bs, int64_t offset,
-                     uint8_t *buf, int count)
-{
-    BDRVRawState *s = bs->opaque;
-    int ret;
-
-    ret = fd_open(bs);
-    if (ret < 0)
-        return ret;
-
-    if (lseek(s->fd, offset, SEEK_SET) == (off_t)-1) {
-        ++(s->lseek_err_cnt);
-        if(s->lseek_err_cnt <= 10) {
-            DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
-                              "] lseek failed : %d = %s\n",
-                              s->fd, bs->filename, offset, buf, count,
-                              bs->total_sectors, errno, strerror(errno));
-        }
-        return -1;
-    }
-    s->lseek_err_cnt=0;
-
-    ret = read(s->fd, buf, count);
-    if (ret == count)
-        goto label__raw_read__success;
-
-    DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
-                      "] read failed %d : %d = %s\n",
-                      s->fd, bs->filename, offset, buf, count,
-                      bs->total_sectors, ret, errno, strerror(errno));
-
-    /* Try harder for CDrom. */
-    if (bs->type == BDRV_TYPE_CDROM) {
-        lseek(s->fd, offset, SEEK_SET);
-        ret = read(s->fd, buf, count);
-        if (ret == count)
-            goto label__raw_read__success;
-        lseek(s->fd, offset, SEEK_SET);
-        ret = read(s->fd, buf, count);
-        if (ret == count)
-            goto label__raw_read__success;
-
-        DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
-                          "] retry read failed %d : %d = %s\n",
-                          s->fd, bs->filename, offset, buf, count,
-                          bs->total_sectors, ret, errno, strerror(errno));
-    }
-
-label__raw_read__success:
-
-    return ret;
-}
-
-static int raw_pwrite(BlockDriverState *bs, int64_t offset,
-                      const uint8_t *buf, int count)
-{
-    BDRVRawState *s = bs->opaque;
-    int ret;
-
-    ret = fd_open(bs);
-    if (ret < 0)
-        return ret;
-
-    if (lseek(s->fd, offset, SEEK_SET) == (off_t)-1) {
-        ++(s->lseek_err_cnt);
-        if(s->lseek_err_cnt) {
-            DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%"
-                              PRId64 "] lseek failed : %d = %s\n",
-                              s->fd, bs->filename, offset, buf, count,
-                              bs->total_sectors, errno, strerror(errno));
-        }
-        return -1;
-    }
-    s->lseek_err_cnt = 0;
-
-    ret = write(s->fd, buf, count);
-    if (ret == count)
-        goto label__raw_write__success;
-
-    DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
-                      "] write failed %d : %d = %s\n",
-                      s->fd, bs->filename, offset, buf, count,
-                      bs->total_sectors, ret, errno, strerror(errno));
-
-label__raw_write__success:
-
-    return ret;
-}
-
-/***********************************************************/
-/* Unix AIO using POSIX AIO */
-
-typedef struct RawAIOCB {
-    BlockDriverAIOCB common;
-    struct aiocb aiocb;
-    struct RawAIOCB *next;
-} RawAIOCB;
-
-static int aio_sig_num = SIGUSR2;
-static RawAIOCB *first_aio; /* AIO issued */
-static int aio_initialized = 0;
-
-static void aio_signal_handler(int signum)
-{
-#ifndef QEMU_IMG
-    CPUState *env = cpu_single_env;
-    if (env) {
-        /* stop the currently executing cpu because a timer occured */
-        cpu_interrupt(env, CPU_INTERRUPT_EXIT);
-#ifdef USE_KQEMU
-        if (env->kqemu_enabled) {
-            kqemu_cpu_interrupt(env);
-        }
-#endif
-    }
-#endif
-}
-
-void qemu_aio_init(void)
-{
-    struct sigaction act;
-
-    aio_initialized = 1;
-
-    sigfillset(&act.sa_mask);
-    act.sa_flags = 0; /* do not restart syscalls to interrupt select() */
-    act.sa_handler = aio_signal_handler;
-    sigaction(aio_sig_num, &act, NULL);
-
-#if defined(__GLIBC__) && defined(__linux__)
-    {
-        /* XXX: aio thread exit seems to hang on RedHat 9 and this init
-           seems to fix the problem. */
-        struct aioinit ai;
-        memset(&ai, 0, sizeof(ai));
-        ai.aio_threads = 1;
-        ai.aio_num = 1;
-        ai.aio_idle_time = 365 * 100000;
-        aio_init(&ai);
-    }
-#endif
-}
-
-void qemu_aio_poll(void)
-{
-    RawAIOCB *acb, **pacb;
-    int ret;
-
-    for(;;) {
-        pacb = &first_aio;
-        for(;;) {
-            acb = *pacb;
-            if (!acb)
-                goto the_end;
-            ret = aio_error(&acb->aiocb);
-            if (ret == ECANCELED) {
-                /* remove the request */
-                *pacb = acb->next;
-                qemu_aio_release(acb);
-            } else if (ret != EINPROGRESS) {
-                /* end of aio */
-                if (ret == 0) {
-                    ret = aio_return(&acb->aiocb);
-                    if (ret == acb->aiocb.aio_nbytes)
-                        ret = 0;
-                    else
-                        ret = -EINVAL;
-                } else {
-                    ret = -ret;
-                }
-                /* remove the request */
-                *pacb = acb->next;
-                /* call the callback */
-                acb->common.cb(acb->common.opaque, ret);
-                qemu_aio_release(acb);
-                break;
-            } else {
-                pacb = &acb->next;
-            }
-        }
-    }
- the_end: ;
-}
-
-/* Wait for all IO requests to complete.  */
-void qemu_aio_flush(void)
-{
-    qemu_aio_wait_start();
-    qemu_aio_poll();
-    while (first_aio) {
-        qemu_aio_wait();
-    }
-    qemu_aio_wait_end();
-}
-
-/* wait until at least one AIO was handled */
-static sigset_t wait_oset;
-
-void qemu_aio_wait_start(void)
-{
-    sigset_t set;
-
-    if (!aio_initialized)
-        qemu_aio_init();
-    sigemptyset(&set);
-    sigaddset(&set, aio_sig_num);
-    sigprocmask(SIG_BLOCK, &set, &wait_oset);
-}
-
-void qemu_aio_wait(void)
-{
-    sigset_t set;
-    int nb_sigs;
-
-#ifndef QEMU_IMG
-    if (qemu_bh_poll())
-        return;
-#endif
-    sigemptyset(&set);
-    sigaddset(&set, aio_sig_num);
-    sigwait(&set, &nb_sigs);
-    qemu_aio_poll();
-}
-
-void qemu_aio_wait_end(void)
-{
-    sigprocmask(SIG_SETMASK, &wait_oset, NULL);
-}
-
-static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
-        int64_t sector_num, uint8_t *buf, int nb_sectors,
-        BlockDriverCompletionFunc *cb, void *opaque)
-{
-    BDRVRawState *s = bs->opaque;
-    RawAIOCB *acb;
-
-    if (fd_open(bs) < 0)
-        return NULL;
-
-    acb = qemu_aio_get(bs, cb, opaque);
-    if (!acb)
-        return NULL;
-    acb->aiocb.aio_fildes = s->fd;
-    acb->aiocb.aio_sigevent.sigev_signo = aio_sig_num;
-    acb->aiocb.aio_sigevent.sigev_notify = SIGEV_SIGNAL;
-    acb->aiocb.aio_buf = buf;
-    acb->aiocb.aio_nbytes = nb_sectors * 512;
-    acb->aiocb.aio_offset = sector_num * 512;
-    acb->next = first_aio;
-    first_aio = acb;
-    return acb;
-}
-
-static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
-        int64_t sector_num, uint8_t *buf, int nb_sectors,
-        BlockDriverCompletionFunc *cb, void *opaque)
-{
-    RawAIOCB *acb;
-
-    acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque);
-    if (!acb)
-        return NULL;
-    if (aio_read(&acb->aiocb) < 0) {
-        qemu_aio_release(acb);
-        return NULL;
-    }
-    return &acb->common;
-}
-
-static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
-        int64_t sector_num, const uint8_t *buf, int nb_sectors,
-        BlockDriverCompletionFunc *cb, void *opaque)
-{
-    RawAIOCB *acb;
-
-    acb = raw_aio_setup(bs, sector_num, (uint8_t*)buf, nb_sectors, cb, opaque);
-    if (!acb)
-        return NULL;
-    if (aio_write(&acb->aiocb) < 0) {
-        qemu_aio_release(acb);
-        return NULL;
-    }
-    return &acb->common;
-}
-
-static void raw_aio_cancel(BlockDriverAIOCB *blockacb)
-{
-    int ret;
-    RawAIOCB *acb = (RawAIOCB *)blockacb;
-    RawAIOCB **pacb;
-
-    ret = aio_cancel(acb->aiocb.aio_fildes, &acb->aiocb);
-    if (ret == AIO_NOTCANCELED) {
-        /* fail safe: if the aio could not be canceled, we wait for
-           it */
-        while (aio_error(&acb->aiocb) == EINPROGRESS);
-    }
-
-    /* remove the callback from the queue */
-    pacb = &first_aio;
-    for(;;) {
-        if (*pacb == NULL) {
-            break;
-        } else if (*pacb == acb) {
-            *pacb = acb->next;
-            qemu_aio_release(acb);
-            break;
-        }
-        pacb = &acb->next;
-    }
-}
-
-static void raw_close(BlockDriverState *bs)
-{
-    BDRVRawState *s = bs->opaque;
-    if (s->fd >= 0) {
-        close(s->fd);
-        s->fd = -1;
-    }
-}
-
-static int raw_truncate(BlockDriverState *bs, int64_t offset)
-{
-    BDRVRawState *s = bs->opaque;
-    if (s->type != FTYPE_FILE)
-        return -ENOTSUP;
-    if (ftruncate(s->fd, offset) < 0)
-        return -errno;
-    return 0;
-}
-
-static int64_t  raw_getlength(BlockDriverState *bs)
-{
-    BDRVRawState *s = bs->opaque;
-    int fd = s->fd;
-    int64_t size;
-#ifdef _BSD
-    struct stat sb;
-#endif
-#ifdef __sun__
-    struct dk_minfo minfo;
-    int rv;
-#endif
-    int ret;
-
-    ret = fd_open(bs);
-    if (ret < 0)
-        return ret;
-
-#ifdef _BSD
-    if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
-#ifdef DIOCGMEDIASIZE
-	if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
-#endif
-#ifdef CONFIG_COCOA
-        size = LONG_LONG_MAX;
-#else
-        size = lseek(fd, 0LL, SEEK_END);
-#endif
-    } else
-#endif
-#ifdef __sun__
-    /*
-     * use the DKIOCGMEDIAINFO ioctl to read the size.
-     */
-    rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo );
-    if ( rv != -1 ) {
-        size = minfo.dki_lbsize * minfo.dki_capacity;
-    } else /* there are reports that lseek on some devices
-              fails, but irc discussion said that contingency
-              on contingency was overkill */
-#endif
-    {
-        size = lseek(fd, 0, SEEK_END);
-    }
-    return size;
-}
-
-static int raw_create(const char *filename, int64_t total_size,
-                      const char *backing_file, int flags)
-{
-    int fd;
-
-    if (flags || backing_file)
-        return -ENOTSUP;
-
-    fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
-              0644);
-    if (fd < 0)
-        return -EIO;
-    ftruncate(fd, total_size * 512);
-    close(fd);
-    return 0;
-}
-
-static void raw_flush(BlockDriverState *bs)
-{
-    BDRVRawState *s = bs->opaque;
-    fsync(s->fd);
-}
-
-BlockDriver bdrv_raw = {
-    "raw",
-    sizeof(BDRVRawState),
-    NULL, /* no probe for protocols */
-    raw_open,
-    NULL,
-    NULL,
-    raw_close,
-    raw_create,
-    raw_flush,
-
-    .bdrv_aio_read = raw_aio_read,
-    .bdrv_aio_write = raw_aio_write,
-    .bdrv_aio_cancel = raw_aio_cancel,
-    .aiocb_size = sizeof(RawAIOCB),
-    .protocol_name = "file",
-    .bdrv_pread = raw_pread,
-    .bdrv_pwrite = raw_pwrite,
-    .bdrv_truncate = raw_truncate,
-    .bdrv_getlength = raw_getlength,
-};
-
-/***********************************************/
-/* host device */
-
-#ifdef CONFIG_COCOA
-static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator );
-static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize );
-
-kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator )
-{
-    kern_return_t       kernResult;
-    mach_port_t     masterPort;
-    CFMutableDictionaryRef  classesToMatch;
-
-    kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort );
-    if ( KERN_SUCCESS != kernResult ) {
-        printf( "IOMasterPort returned %d\n", kernResult );
-    }
-
-    classesToMatch = IOServiceMatching( kIOCDMediaClass );
-    if ( classesToMatch == NULL ) {
-        printf( "IOServiceMatching returned a NULL dictionary.\n" );
-    } else {
-    CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue );
-    }
-    kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator );
-    if ( KERN_SUCCESS != kernResult )
-    {
-        printf( "IOServiceGetMatchingServices returned %d\n", kernResult );
-    }
-
-    return kernResult;
-}
-
-kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize )
-{
-    io_object_t     nextMedia;
-    kern_return_t   kernResult = KERN_FAILURE;
-    *bsdPath = '\0';
-    nextMedia = IOIteratorNext( mediaIterator );
-    if ( nextMedia )
-    {
-        CFTypeRef   bsdPathAsCFString;
-    bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 );
-        if ( bsdPathAsCFString ) {
-            size_t devPathLength;
-            strcpy( bsdPath, _PATH_DEV );
-            strcat( bsdPath, "r" );
-            devPathLength = strlen( bsdPath );
-            if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) {
-                kernResult = KERN_SUCCESS;
-            }
-            CFRelease( bsdPathAsCFString );
-        }
-        IOObjectRelease( nextMedia );
-    }
-
-    return kernResult;
-}
-
-#endif
-
-static int hdev_open(BlockDriverState *bs, const char *filename, int flags)
-{
-    BDRVRawState *s = bs->opaque;
-    int fd, open_flags, ret;
-
-#ifdef CONFIG_COCOA
-    if (strstart(filename, "/dev/cdrom", NULL)) {
-        kern_return_t kernResult;
-        io_iterator_t mediaIterator;
-        char bsdPath[ MAXPATHLEN ];
-        int fd;
-
-        kernResult = FindEjectableCDMedia( &mediaIterator );
-        kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) );
-
-        if ( bsdPath[ 0 ] != '\0' ) {
-            strcat(bsdPath,"s0");
-            /* some CDs don't have a partition 0 */
-            fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE);
-            if (fd < 0) {
-                bsdPath[strlen(bsdPath)-1] = '1';
-            } else {
-                close(fd);
-            }
-            filename = bsdPath;
-        }
-
-        if ( mediaIterator )
-            IOObjectRelease( mediaIterator );
-    }
-#endif
-    open_flags = O_BINARY;
-    if ((flags & BDRV_O_ACCESS) == O_RDWR) {
-        open_flags |= O_RDWR;
-    } else {
-        open_flags |= O_RDONLY;
-        bs->read_only = 1;
-    }
-
-    s->type = FTYPE_FILE;
-#if defined(__linux__)
-    if (strstart(filename, "/dev/cd", NULL)) {
-        /* open will not fail even if no CD is inserted */
-        open_flags |= O_NONBLOCK;
-        s->type = FTYPE_CD;
-    } else if (strstart(filename, "/dev/fd", NULL)) {
-        s->type = FTYPE_FD;
-        s->fd_open_flags = open_flags;
-        /* open will not fail even if no floppy is inserted */
-        open_flags |= O_NONBLOCK;
-    }
-#endif
-    fd = open(filename, open_flags, 0644);
-    if (fd < 0) {
-        ret = -errno;
-        if (ret == -EROFS)
-            ret = -EACCES;
-        return ret;
-    }
-    s->fd = fd;
-#if defined(__linux__)
-    /* close fd so that we can reopen it as needed */
-    if (s->type == FTYPE_FD) {
-        close(s->fd);
-        s->fd = -1;
-        s->fd_media_changed = 1;
-    }
-#endif
-    return 0;
-}
-
-#if defined(__linux__) && !defined(QEMU_IMG)
-
-/* Note: we do not have a reliable method to detect if the floppy is
-   present. The current method is to try to open the floppy at every
-   I/O and to keep it opened during a few hundreds of ms. */
-static int fd_open(BlockDriverState *bs)
-{
-    BDRVRawState *s = bs->opaque;
-    int last_media_present;
-
-    if (s->type != FTYPE_FD)
-        return 0;
-    last_media_present = (s->fd >= 0);
-    if (s->fd >= 0 &&
-        (qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) {
-        close(s->fd);
-        s->fd = -1;
-#ifdef DEBUG_FLOPPY
-        printf("Floppy closed\n");
-#endif
-    }
-    if (s->fd < 0) {
-        if (s->fd_got_error &&
-            (qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) {
-#ifdef DEBUG_FLOPPY
-            printf("No floppy (open delayed)\n");
-#endif
-            return -EIO;
-        }
-        s->fd = open(bs->filename, s->fd_open_flags);
-        if (s->fd < 0) {
-            s->fd_error_time = qemu_get_clock(rt_clock);
-            s->fd_got_error = 1;
-            if (last_media_present)
-                s->fd_media_changed = 1;
-#ifdef DEBUG_FLOPPY
-            printf("No floppy\n");
-#endif
-            return -EIO;
-        }
-#ifdef DEBUG_FLOPPY
-        printf("Floppy opened\n");
-#endif
-    }
-    if (!last_media_present)
-        s->fd_media_changed = 1;
-    s->fd_open_time = qemu_get_clock(rt_clock);
-    s->fd_got_error = 0;
-    return 0;
-}
-#else
-static int fd_open(BlockDriverState *bs)
-{
-    return 0;
-}
-#endif
-
-#if defined(__linux__)
-
-static int raw_is_inserted(BlockDriverState *bs)
-{
-    BDRVRawState *s = bs->opaque;
-    int ret;
-
-    switch(s->type) {
-    case FTYPE_CD:
-        ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT);
-        if (ret == CDS_DISC_OK)
-            return 1;
-        else
-            return 0;
-        break;
-    case FTYPE_FD:
-        ret = fd_open(bs);
-        return (ret >= 0);
-    default:
-        return 1;
-    }
-}
-
-/* currently only used by fdc.c, but a CD version would be good too */
-static int raw_media_changed(BlockDriverState *bs)
-{
-    BDRVRawState *s = bs->opaque;
-
-    switch(s->type) {
-    case FTYPE_FD:
-        {
-            int ret;
-            /* XXX: we do not have a true media changed indication. It
-               does not work if the floppy is changed without trying
-               to read it */
-            fd_open(bs);
-            ret = s->fd_media_changed;
-            s->fd_media_changed = 0;
-#ifdef DEBUG_FLOPPY
-            printf("Floppy changed=%d\n", ret);
-#endif
-            return ret;
-        }
-    default:
-        return -ENOTSUP;
-    }
-}
-
-static int raw_eject(BlockDriverState *bs, int eject_flag)
-{
-    BDRVRawState *s = bs->opaque;
-
-    switch(s->type) {
-    case FTYPE_CD:
-        if (eject_flag) {
-            if (ioctl (s->fd, CDROMEJECT, NULL) < 0)
-                perror("CDROMEJECT");
-        } else {
-            if (ioctl (s->fd, CDROMCLOSETRAY, NULL) < 0)
-                perror("CDROMEJECT");
-        }
-        break;
-    case FTYPE_FD:
-        {
-            int fd;
-            if (s->fd >= 0) {
-                close(s->fd);
-                s->fd = -1;
-            }
-            fd = open(bs->filename, s->fd_open_flags | O_NONBLOCK);
-            if (fd >= 0) {
-                if (ioctl(fd, FDEJECT, 0) < 0)
-                    perror("FDEJECT");
-                close(fd);
-            }
-        }
-        break;
-    default:
-        return -ENOTSUP;
-    }
-    return 0;
-}
-
-static int raw_set_locked(BlockDriverState *bs, int locked)
-{
-    BDRVRawState *s = bs->opaque;
-
-    switch(s->type) {
-    case FTYPE_CD:
-        if (ioctl (s->fd, CDROM_LOCKDOOR, locked) < 0) {
-            /* Note: an error can happen if the distribution automatically
-               mounts the CD-ROM */
-            //        perror("CDROM_LOCKDOOR");
-        }
-        break;
-    default:
-        return -ENOTSUP;
-    }
-    return 0;
-}
-
-#else
-
-static int raw_is_inserted(BlockDriverState *bs)
-{
-    return 1;
-}
-
-static int raw_media_changed(BlockDriverState *bs)
-{
-    return -ENOTSUP;
-}
-
-static int raw_eject(BlockDriverState *bs, int eject_flag)
-{
-    return -ENOTSUP;
-}
-
-static int raw_set_locked(BlockDriverState *bs, int locked)
-{
-    return -ENOTSUP;
-}
-
-#endif /* !linux */
-
-BlockDriver bdrv_host_device = {
-    "host_device",
-    sizeof(BDRVRawState),
-    NULL, /* no probe for protocols */
-    hdev_open,
-    NULL,
-    NULL,
-    raw_close,
-    NULL,
-    raw_flush,
-
-    .bdrv_aio_read = raw_aio_read,
-    .bdrv_aio_write = raw_aio_write,
-    .bdrv_aio_cancel = raw_aio_cancel,
-    .aiocb_size = sizeof(RawAIOCB),
-    .bdrv_pread = raw_pread,
-    .bdrv_pwrite = raw_pwrite,
-    .bdrv_getlength = raw_getlength,
-
-    /* removable device support */
-    .bdrv_is_inserted = raw_is_inserted,
-    .bdrv_media_changed = raw_media_changed,
-    .bdrv_eject = raw_eject,
-    .bdrv_set_locked = raw_set_locked,
-};
-
-#else /* _WIN32 */
-
-/* XXX: use another file ? */
-#include <winioctl.h>
-
-#define FTYPE_FILE 0
-#define FTYPE_CD     1
-#define FTYPE_HARDDISK 2
-
-typedef struct BDRVRawState {
-    HANDLE hfile;
-    int type;
-    char drive_path[16]; /* format: "d:\" */
-} BDRVRawState;
-
-typedef struct RawAIOCB {
-    BlockDriverAIOCB common;
-    HANDLE hEvent;
-    OVERLAPPED ov;
-    int count;
-} RawAIOCB;
-
-int qemu_ftruncate64(int fd, int64_t length)
-{
-    LARGE_INTEGER li;
-    LONG high;
-    HANDLE h;
-    BOOL res;
-
-    if ((GetVersion() & 0x80000000UL) && (length >> 32) != 0)
-	return -1;
-
-    h = (HANDLE)_get_osfhandle(fd);
-
-    /* get current position, ftruncate do not change position */
-    li.HighPart = 0;
-    li.LowPart = SetFilePointer (h, 0, &li.HighPart, FILE_CURRENT);
-    if (li.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR)
-	return -1;
-
-    high = length >> 32;
-    if (!SetFilePointer(h, (DWORD) length, &high, FILE_BEGIN))
-	return -1;
-    res = SetEndOfFile(h);
-
-    /* back to old position */
-    SetFilePointer(h, li.LowPart, &li.HighPart, FILE_BEGIN);
-    return res ? 0 : -1;
-}
-
-static int set_sparse(int fd)
-{
-    DWORD returned;
-    return (int) DeviceIoControl((HANDLE)_get_osfhandle(fd), FSCTL_SET_SPARSE,
-				 NULL, 0, NULL, 0, &returned, NULL);
-}
-
-static int raw_open(BlockDriverState *bs, const char *filename, int flags)
-{
-    BDRVRawState *s = bs->opaque;
-    int access_flags, create_flags;
-    DWORD overlapped;
-
-    s->type = FTYPE_FILE;
-
-    if ((flags & BDRV_O_ACCESS) == O_RDWR) {
-        access_flags = GENERIC_READ | GENERIC_WRITE;
-    } else {
-        access_flags = GENERIC_READ;
-    }
-    if (flags & BDRV_O_CREAT) {
-        create_flags = CREATE_ALWAYS;
-    } else {
-        create_flags = OPEN_EXISTING;
-    }
-#ifdef QEMU_IMG
-    overlapped = FILE_ATTRIBUTE_NORMAL;
-#else
-    overlapped = FILE_FLAG_OVERLAPPED;
-#endif
-    s->hfile = CreateFile(filename, access_flags,
-                          FILE_SHARE_READ, NULL,
-                          create_flags, overlapped, NULL);
-    if (s->hfile == INVALID_HANDLE_VALUE) {
-        int err = GetLastError();
-
-        if (err == ERROR_ACCESS_DENIED)
-            return -EACCES;
-        return -1;
-    }
-    return 0;
-}
-
-static int raw_pread(BlockDriverState *bs, int64_t offset,
-                     uint8_t *buf, int count)
-{
-    BDRVRawState *s = bs->opaque;
-    OVERLAPPED ov;
-    DWORD ret_count;
-    int ret;
-
-    memset(&ov, 0, sizeof(ov));
-    ov.Offset = offset;
-    ov.OffsetHigh = offset >> 32;
-    ret = ReadFile(s->hfile, buf, count, &ret_count, &ov);
-    if (!ret) {
-        ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE);
-        if (!ret)
-            return -EIO;
-        else
-            return ret_count;
-    }
-    return ret_count;
-}
-
-static int raw_pwrite(BlockDriverState *bs, int64_t offset,
-                      const uint8_t *buf, int count)
-{
-    BDRVRawState *s = bs->opaque;
-    OVERLAPPED ov;
-    DWORD ret_count;
-    int ret;
-
-    memset(&ov, 0, sizeof(ov));
-    ov.Offset = offset;
-    ov.OffsetHigh = offset >> 32;
-    ret = WriteFile(s->hfile, buf, count, &ret_count, &ov);
-    if (!ret) {
-        ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE);
-        if (!ret)
-            return -EIO;
-        else
-            return ret_count;
-    }
-    return ret_count;
-}
-
-#if 0
-#ifndef QEMU_IMG
-static void raw_aio_cb(void *opaque)
-{
-    RawAIOCB *acb = opaque;
-    BlockDriverState *bs = acb->common.bs;
-    BDRVRawState *s = bs->opaque;
-    DWORD ret_count;
-    int ret;
-
-    ret = GetOverlappedResult(s->hfile, &acb->ov, &ret_count, TRUE);
-    if (!ret || ret_count != acb->count) {
-        acb->common.cb(acb->common.opaque, -EIO);
-    } else {
-        acb->common.cb(acb->common.opaque, 0);
-    }
-}
-#endif
-
-static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
-        int64_t sector_num, uint8_t *buf, int nb_sectors,
-        BlockDriverCompletionFunc *cb, void *opaque)
-{
-    RawAIOCB *acb;
-    int64_t offset;
-
-    acb = qemu_aio_get(bs, cb, opaque);
-    if (acb->hEvent) {
-        acb->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
-        if (!acb->hEvent) {
-            qemu_aio_release(acb);
-            return NULL;
-        }
-    }
-    memset(&acb->ov, 0, sizeof(acb->ov));
-    offset = sector_num * 512;
-    acb->ov.Offset = offset;
-    acb->ov.OffsetHigh = offset >> 32;
-    acb->ov.hEvent = acb->hEvent;
-    acb->count = nb_sectors * 512;
-#ifndef QEMU_IMG
-    qemu_add_wait_object(acb->ov.hEvent, raw_aio_cb, acb);
-#endif
-    return acb;
-}
-
-static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
-        int64_t sector_num, uint8_t *buf, int nb_sectors,
-        BlockDriverCompletionFunc *cb, void *opaque)
-{
-    BDRVRawState *s = bs->opaque;
-    RawAIOCB *acb;
-    int ret;
-
-    acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque);
-    if (!acb)
-        return NULL;
-    ret = ReadFile(s->hfile, buf, acb->count, NULL, &acb->ov);
-    if (!ret) {
-        qemu_aio_release(acb);
-        return NULL;
-    }
-#ifdef QEMU_IMG
-    qemu_aio_release(acb);
-#endif
-    return (BlockDriverAIOCB *)acb;
-}
-
-static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
-        int64_t sector_num, uint8_t *buf, int nb_sectors,
-        BlockDriverCompletionFunc *cb, void *opaque)
-{
-    BDRVRawState *s = bs->opaque;
-    RawAIOCB *acb;
-    int ret;
-
-    acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque);
-    if (!acb)
-        return NULL;
-    ret = WriteFile(s->hfile, buf, acb->count, NULL, &acb->ov);
-    if (!ret) {
-        qemu_aio_release(acb);
-        return NULL;
-    }
-#ifdef QEMU_IMG
-    qemu_aio_release(acb);
-#endif
-    return (BlockDriverAIOCB *)acb;
-}
-
-static void raw_aio_cancel(BlockDriverAIOCB *blockacb)
-{
-#ifndef QEMU_IMG
-    RawAIOCB *acb = (RawAIOCB *)blockacb;
-    BlockDriverState *bs = acb->common.bs;
-    BDRVRawState *s = bs->opaque;
-
-    qemu_del_wait_object(acb->ov.hEvent, raw_aio_cb, acb);
-    /* XXX: if more than one async I/O it is not correct */
-    CancelIo(s->hfile);
-    qemu_aio_release(acb);
-#endif
-}
-#endif /* #if 0 */
-
-static void raw_flush(BlockDriverState *bs)
-{
-    BDRVRawState *s = bs->opaque;
-    FlushFileBuffers(s->hfile);
-}
-
-static void raw_close(BlockDriverState *bs)
-{
-    BDRVRawState *s = bs->opaque;
-    CloseHandle(s->hfile);
-}
-
-static int raw_truncate(BlockDriverState *bs, int64_t offset)
-{
-    BDRVRawState *s = bs->opaque;
-    DWORD low, high;
-
-    low = offset;
-    high = offset >> 32;
-    if (!SetFilePointer(s->hfile, low, &high, FILE_BEGIN))
-	return -EIO;
-    if (!SetEndOfFile(s->hfile))
-        return -EIO;
-    return 0;
-}
-
-static int64_t raw_getlength(BlockDriverState *bs)
-{
-    BDRVRawState *s = bs->opaque;
-    LARGE_INTEGER l;
-    ULARGE_INTEGER available, total, total_free;
-    DISK_GEOMETRY_EX dg;
-    DWORD count;
-    BOOL status;
-
-    switch(s->type) {
-    case FTYPE_FILE:
-        l.LowPart = GetFileSize(s->hfile, &l.HighPart);
-        if (l.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR)
-            return -EIO;
-        break;
-    case FTYPE_CD:
-        if (!GetDiskFreeSpaceEx(s->drive_path, &available, &total, &total_free))
-            return -EIO;
-        l.QuadPart = total.QuadPart;
-        break;
-    case FTYPE_HARDDISK:
-        status = DeviceIoControl(s->hfile, IOCTL_DISK_GET_DRIVE_GEOMETRY_EX,
-                                 NULL, 0, &dg, sizeof(dg), &count, NULL);
-        if (status != 0) {
-            l = dg.DiskSize;
-        }
-        break;
-    default:
-        return -EIO;
-    }
-    return l.QuadPart;
-}
-
-static int raw_create(const char *filename, int64_t total_size,
-                      const char *backing_file, int flags)
-{
-    int fd;
-
-    if (flags || backing_file)
-        return -ENOTSUP;
-
-    fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
-              0644);
-    if (fd < 0)
-        return -EIO;
-    set_sparse(fd);
-    ftruncate(fd, total_size * 512);
-    close(fd);
-    return 0;
-}
-
-void qemu_aio_init(void)
-{
-}
-
-void qemu_aio_poll(void)
-{
-}
-
-void qemu_aio_flush(void)
-{
-}
-
-void qemu_aio_wait_start(void)
-{
-}
-
-void qemu_aio_wait(void)
-{
-#ifndef QEMU_IMG
-    qemu_bh_poll();
-#endif
-}
-
-void qemu_aio_wait_end(void)
-{
-}
-
-BlockDriver bdrv_raw = {
-    "raw",
-    sizeof(BDRVRawState),
-    NULL, /* no probe for protocols */
-    raw_open,
-    NULL,
-    NULL,
-    raw_close,
-    raw_create,
-    raw_flush,
-
-#if 0
-    .bdrv_aio_read = raw_aio_read,
-    .bdrv_aio_write = raw_aio_write,
-    .bdrv_aio_cancel = raw_aio_cancel,
-    .aiocb_size = sizeof(RawAIOCB);
-#endif
-    .protocol_name = "file",
-    .bdrv_pread = raw_pread,
-    .bdrv_pwrite = raw_pwrite,
-    .bdrv_truncate = raw_truncate,
-    .bdrv_getlength = raw_getlength,
-};
-
-/***********************************************/
-/* host device */
-
-static int find_cdrom(char *cdrom_name, int cdrom_name_size)
-{
-    char drives[256], *pdrv = drives;
-    UINT type;
-
-    memset(drives, 0, sizeof(drives));
-    GetLogicalDriveStrings(sizeof(drives), drives);
-    while(pdrv[0] != '\0') {
-        type = GetDriveType(pdrv);
-        switch(type) {
-        case DRIVE_CDROM:
-            snprintf(cdrom_name, cdrom_name_size, "\\\\.\\%c:", pdrv[0]);
-            return 0;
-            break;
-        }
-        pdrv += lstrlen(pdrv) + 1;
-    }
-    return -1;
-}
-
-static int find_device_type(BlockDriverState *bs, const char *filename)
-{
-    BDRVRawState *s = bs->opaque;
-    UINT type;
-    const char *p;
-
-    if (strstart(filename, "\\\\.\\", &p) ||
-        strstart(filename, "//./", &p)) {
-        if (stristart(p, "PhysicalDrive", NULL))
-            return FTYPE_HARDDISK;
-        snprintf(s->drive_path, sizeof(s->drive_path), "%c:\\", p[0]);
-        type = GetDriveType(s->drive_path);
-        if (type == DRIVE_CDROM)
-            return FTYPE_CD;
-        else
-            return FTYPE_FILE;
-    } else {
-        return FTYPE_FILE;
-    }
-}
-
-static int hdev_open(BlockDriverState *bs, const char *filename, int flags)
-{
-    BDRVRawState *s = bs->opaque;
-    int access_flags, create_flags;
-    DWORD overlapped;
-    char device_name[64];
-
-    if (strstart(filename, "/dev/cdrom", NULL)) {
-        if (find_cdrom(device_name, sizeof(device_name)) < 0)
-            return -ENOENT;
-        filename = device_name;
-    } else {
-        /* transform drive letters into device name */
-        if (((filename[0] >= 'a' && filename[0] <= 'z') ||
-             (filename[0] >= 'A' && filename[0] <= 'Z')) &&
-            filename[1] == ':' && filename[2] == '\0') {
-            snprintf(device_name, sizeof(device_name), "\\\\.\\%c:", filename[0]);
-            filename = device_name;
-        }
-    }
-    s->type = find_device_type(bs, filename);
-
-    if ((flags & BDRV_O_ACCESS) == O_RDWR) {
-        access_flags = GENERIC_READ | GENERIC_WRITE;
-    } else {
-        access_flags = GENERIC_READ;
-    }
-    create_flags = OPEN_EXISTING;
-
-#ifdef QEMU_IMG
-    overlapped = FILE_ATTRIBUTE_NORMAL;
-#else
-    overlapped = FILE_FLAG_OVERLAPPED;
-#endif
-    s->hfile = CreateFile(filename, access_flags,
-                          FILE_SHARE_READ, NULL,
-                          create_flags, overlapped, NULL);
-    if (s->hfile == INVALID_HANDLE_VALUE) {
-        int err = GetLastError();
-
-        if (err == ERROR_ACCESS_DENIED)
-            return -EACCES;
-        return -1;
-    }
-    return 0;
-}
-
-#if 0
-/***********************************************/
-/* removable device additional commands */
-
-static int raw_is_inserted(BlockDriverState *bs)
-{
-    return 1;
-}
-
-static int raw_media_changed(BlockDriverState *bs)
-{
-    return -ENOTSUP;
-}
-
-static int raw_eject(BlockDriverState *bs, int eject_flag)
-{
-    DWORD ret_count;
-
-    if (s->type == FTYPE_FILE)
-        return -ENOTSUP;
-    if (eject_flag) {
-        DeviceIoControl(s->hfile, IOCTL_STORAGE_EJECT_MEDIA,
-                        NULL, 0, NULL, 0, &lpBytesReturned, NULL);
-    } else {
-        DeviceIoControl(s->hfile, IOCTL_STORAGE_LOAD_MEDIA,
-                        NULL, 0, NULL, 0, &lpBytesReturned, NULL);
-    }
-}
-
-static int raw_set_locked(BlockDriverState *bs, int locked)
-{
-    return -ENOTSUP;
-}
-#endif
-
-BlockDriver bdrv_host_device = {
-    "host_device",
-    sizeof(BDRVRawState),
-    NULL, /* no probe for protocols */
-    hdev_open,
-    NULL,
-    NULL,
-    raw_close,
-    NULL,
-    raw_flush,
-
-#if 0
-    .bdrv_aio_read = raw_aio_read,
-    .bdrv_aio_write = raw_aio_write,
-    .bdrv_aio_cancel = raw_aio_cancel,
-    .aiocb_size = sizeof(RawAIOCB);
-#endif
-    .bdrv_pread = raw_pread,
-    .bdrv_pwrite = raw_pwrite,
-    .bdrv_getlength = raw_getlength,
-};
-#endif /* _WIN32 */