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-rw-r--r--block-raw-win32.c526
1 files changed, 0 insertions, 526 deletions
diff --git a/block-raw-win32.c b/block-raw-win32.c
deleted file mode 100644
index 71404ac..0000000
--- a/block-raw-win32.c
+++ /dev/null
@@ -1,526 +0,0 @@
-/*
- * 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"
-#include "qemu-timer.h"
-#include "block_int.h"
-#include <assert.h>
-#include <winioctl.h>
-
-//#define WIN32_AIO
-
-#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 WIN32_AIO
- overlapped = FILE_FLAG_OVERLAPPED;
-#else
- overlapped = FILE_ATTRIBUTE_NORMAL;
-#endif
- if (flags & BDRV_O_DIRECT)
- overlapped |= FILE_FLAG_NO_BUFFERING | FILE_FLAG_WRITE_THROUGH;
- 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) {
-#ifdef WIN32_AIO
- ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE);
- if (!ret)
- return -EIO;
- else
-#endif
- 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) {
-#ifdef WIN32_AIO
- ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE);
- if (!ret)
- return -EIO;
- else
-#endif
- return ret_count;
- }
- return ret_count;
-}
-
-#ifdef WIN32_AIO
-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);
- }
-}
-
-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;
- qemu_add_wait_object(acb->ov.hEvent, raw_aio_cb, acb);
- 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;
- }
- qemu_aio_release(acb);
- 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;
- }
- qemu_aio_release(acb);
- return (BlockDriverAIOCB *)acb;
-}
-
-static void raw_aio_cancel(BlockDriverAIOCB *blockacb)
-{
- 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 /* #if WIN32_AIO */
-
-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_flush(void)
-{
-}
-
-void qemu_aio_wait(void)
-{
- qemu_bh_poll();
-}
-
-BlockDriver bdrv_raw = {
- "raw",
- sizeof(BDRVRawState),
- NULL, /* no probe for protocols */
- raw_open,
- NULL,
- NULL,
- raw_close,
- raw_create,
- raw_flush,
-
-#ifdef WIN32_AIO
- .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_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 WIN32_AIO
- overlapped = FILE_FLAG_OVERLAPPED;
-#else
- overlapped = FILE_ATTRIBUTE_NORMAL;
-#endif
- if (flags & BDRV_O_DIRECT)
- overlapped |= FILE_FLAG_NO_BUFFERING | FILE_FLAG_WRITE_THROUGH;
- 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,
-
-#ifdef WIN32_AIO
- .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,
-};
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