/*
* 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
#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
-typedef struct BDRVRawState {
- int fd;
-} BDRVRawState;
+//#define DEBUG_FLOPPY
-#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 );
+#define DEBUG_BLOCK
+#if defined(DEBUG_BLOCK) && !defined(QEMU_TOOL)
+#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
-kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator )
-{
- kern_return_t kernResult;
- mach_port_t masterPort;
- CFMutableDictionaryRef classesToMatch;
+#define FTYPE_FILE 0
+#define FTYPE_CD 1
+#define FTYPE_FD 2
- 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;
-}
+/* 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;
+ int fd, open_flags, ret;
+
+ s->lseek_err_cnt = 0;
-#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;
if (flags & BDRV_O_CREAT)
open_flags |= O_CREAT | O_TRUNC;
+ s->type = FTYPE_FILE;
+
fd = open(filename, open_flags, 0644);
- if (fd < 0)
- return -errno;
+ if (fd < 0) {
+ ret = -errno;
+ if (ret == -EROFS)
+ ret = -EACCES;
+ return ret;
+ }
s->fd = fd;
return 0;
}
#endif
*/
-static int raw_pread(BlockDriverState *bs, int64_t offset,
+static int raw_pread(BlockDriverState *bs, int64_t offset,
uint8_t *buf, int count)
{
BDRVRawState *s = bs->opaque;
int ret;
-
- lseek(s->fd, offset, SEEK_SET);
+
+ 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,
+static int raw_pwrite(BlockDriverState *bs, int64_t offset,
const uint8_t *buf, int count)
{
BDRVRawState *s = bs->opaque;
int ret;
-
- lseek(s->fd, offset, SEEK_SET);
+
+ 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 AOP using POSIX AIO */
+/* Unix AIO using POSIX AIO */
typedef struct RawAIOCB {
BlockDriverAIOCB common;
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 RH 9 */
+ /* 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 = 2;
+ ai.aio_threads = 1;
ai.aio_num = 1;
ai.aio_idle_time = 365 * 100000;
aio_init(&ai);
}
+#endif
}
void qemu_aio_poll(void)
if (ret == acb->aiocb.aio_nbytes)
ret = 0;
else
- ret = -1;
+ ret = -EINVAL;
} else {
ret = -ret;
}
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;
BDRVRawState *s = bs->opaque;
RawAIOCB *acb;
+ if (fd_open(bs) < 0)
+ return NULL;
+
acb = qemu_aio_get(bs, cb, opaque);
if (!acb)
return NULL;
if (aio_read(&acb->aiocb) < 0) {
qemu_aio_release(acb);
return NULL;
- }
+ }
return &acb->common;
}
if (aio_write(&acb->aiocb) < 0) {
qemu_aio_release(acb);
return NULL;
- }
+ }
return &acb->common;
}
static void raw_close(BlockDriverState *bs)
{
BDRVRawState *s = bs->opaque;
- close(s->fd);
+ 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;
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)) {
{
size = lseek(fd, 0, SEEK_END);
}
-#ifdef _WIN32
- /* On Windows hosts it can happen that we're unable to get file size
- for CD-ROM raw device (it's inherent limitation of the CDFS driver). */
- if (size == -1)
- size = LONG_LONG_MAX;
-#endif
return size;
}
if (flags || backing_file)
return -ENOTSUP;
- fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
+ fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
0644);
if (fd < 0)
return -EIO;
raw_close,
raw_create,
raw_flush,
-
+
.bdrv_aio_read = raw_aio_read,
.bdrv_aio_write = raw_aio_write,
.bdrv_aio_cancel = raw_aio_cancel,
.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_TOOL)
+
+/* 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 {
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 {
create_flags = OPEN_EXISTING;
}
#ifdef QEMU_TOOL
- overlapped = 0;
+ overlapped = FILE_ATTRIBUTE_NORMAL;
#else
overlapped = FILE_FLAG_OVERLAPPED;
#endif
- s->hfile = CreateFile(filename, access_flags,
+ s->hfile = CreateFile(filename, access_flags,
FILE_SHARE_READ, NULL,
- create_flags, overlapped, 0);
- if (s->hfile == INVALID_HANDLE_VALUE)
+ 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,
+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;
return ret_count;
}
-static int raw_pwrite(BlockDriverState *bs, int64_t offset,
+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;
return ret_count;
}
+#if 0
#ifndef QEMU_TOOL
static void raw_aio_cb(void *opaque)
{
qemu_aio_release(acb);
#endif
}
+#endif /* #if 0 */
static void raw_flush(BlockDriverState *bs)
{
- /* XXX: add it */
+ BDRVRawState *s = bs->opaque;
+ FlushFileBuffers(s->hfile);
}
static void raw_close(BlockDriverState *bs)
return 0;
}
-static int64_t raw_getlength(BlockDriverState *bs)
+static int64_t raw_getlength(BlockDriverState *bs)
{
BDRVRawState *s = bs->opaque;
LARGE_INTEGER l;
-
- l.LowPart = GetFileSize(s->hfile, &l.HighPart);
- if (l.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR)
- return -EIO;
+ ULARGE_INTEGER available, total, total_free;
+ DISK_GEOMETRY 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,
+ NULL, 0, &dg, sizeof(dg), &count, NULL);
+ if (status != FALSE) {
+ l.QuadPart = dg.Cylinders.QuadPart * dg.TracksPerCylinder
+ * dg.SectorsPerTrack * dg.BytesPerSector;
+ }
+ break;
+ default:
+ return -EIO;
+ }
return l.QuadPart;
}
if (flags || backing_file)
return -ENOTSUP;
- fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
+ fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
0644);
if (fd < 0)
return -EIO;
{
}
+void qemu_aio_flush(void)
+{
+}
+
void qemu_aio_wait_start(void)
{
}
void qemu_aio_wait(void)
{
+#ifndef QEMU_TOOL
+ qemu_bh_poll();
+#endif
}
void qemu_aio_wait_end(void)
raw_close,
raw_create,
raw_flush,
-
+
#if 0
.bdrv_aio_read = raw_aio_read,
.bdrv_aio_write = raw_aio_write,
.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_TOOL
+ 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 */
projects / qemu.git / blobdiff