/*
- * Block driver for RAW files
+ * Block driver for RAW files (posix)
*
* Copyright (c) 2006 Fabrice Bellard
*
#endif
#include "block_int.h"
#include <assert.h>
-#ifndef _WIN32
#include <aio.h>
#ifdef CONFIG_COCOA
.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 */
--- /dev/null
+/*
+ * Block driver for RAW files (win32)
+ *
+ * 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>
+#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,
+};
projects / sdk / emulator / qemu.git / commitdiff