2007-12-15 18:28:36 +01:00
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/*
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* Block driver for RAW files (win32)
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*
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* Copyright (c) 2006 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu-common.h"
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#include "qemu-timer.h"
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#include "block_int.h"
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2009-05-10 00:03:42 +02:00
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#include "module.h"
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2009-03-08 17:26:59 +01:00
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#include <windows.h>
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2007-12-15 18:28:36 +01:00
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#include <winioctl.h>
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#define FTYPE_FILE 0
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#define FTYPE_CD 1
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#define FTYPE_HARDDISK 2
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typedef struct BDRVRawState {
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HANDLE hfile;
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int type;
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char drive_path[16]; /* format: "d:\" */
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} BDRVRawState;
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int qemu_ftruncate64(int fd, int64_t length)
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{
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LARGE_INTEGER li;
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2011-08-20 12:10:05 +02:00
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DWORD dw;
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2007-12-15 18:28:36 +01:00
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LONG high;
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HANDLE h;
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BOOL res;
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if ((GetVersion() & 0x80000000UL) && (length >> 32) != 0)
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return -1;
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h = (HANDLE)_get_osfhandle(fd);
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/* get current position, ftruncate do not change position */
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li.HighPart = 0;
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li.LowPart = SetFilePointer (h, 0, &li.HighPart, FILE_CURRENT);
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2011-08-20 12:10:05 +02:00
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if (li.LowPart == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) {
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2007-12-15 18:28:36 +01:00
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return -1;
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2011-08-20 12:10:05 +02:00
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}
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2007-12-15 18:28:36 +01:00
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high = length >> 32;
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2011-08-20 12:10:05 +02:00
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dw = SetFilePointer(h, (DWORD) length, &high, FILE_BEGIN);
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if (dw == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) {
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2007-12-15 18:28:36 +01:00
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return -1;
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2011-08-20 12:10:05 +02:00
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}
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2007-12-15 18:28:36 +01:00
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res = SetEndOfFile(h);
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/* back to old position */
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SetFilePointer(h, li.LowPart, &li.HighPart, FILE_BEGIN);
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return res ? 0 : -1;
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}
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static int set_sparse(int fd)
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{
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DWORD returned;
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return (int) DeviceIoControl((HANDLE)_get_osfhandle(fd), FSCTL_SET_SPARSE,
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NULL, 0, NULL, 0, &returned, NULL);
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}
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static int raw_open(BlockDriverState *bs, const char *filename, int flags)
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{
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BDRVRawState *s = bs->opaque;
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2010-01-20 18:13:42 +01:00
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int access_flags;
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2007-12-15 18:28:36 +01:00
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DWORD overlapped;
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s->type = FTYPE_FILE;
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2010-01-17 15:48:13 +01:00
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if (flags & BDRV_O_RDWR) {
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2007-12-15 18:28:36 +01:00
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access_flags = GENERIC_READ | GENERIC_WRITE;
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} else {
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access_flags = GENERIC_READ;
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}
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2010-01-20 18:13:42 +01:00
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2008-09-15 17:51:35 +02:00
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overlapped = FILE_ATTRIBUTE_NORMAL;
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2011-05-17 18:04:06 +02:00
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if (flags & BDRV_O_NOCACHE)
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overlapped |= FILE_FLAG_NO_BUFFERING;
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if (!(flags & BDRV_O_CACHE_WB))
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2008-10-14 16:42:54 +02:00
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overlapped |= FILE_FLAG_WRITE_THROUGH;
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2007-12-15 18:28:36 +01:00
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s->hfile = CreateFile(filename, access_flags,
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FILE_SHARE_READ, NULL,
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2010-01-20 18:13:42 +01:00
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OPEN_EXISTING, overlapped, NULL);
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2007-12-15 18:28:36 +01:00
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if (s->hfile == INVALID_HANDLE_VALUE) {
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int err = GetLastError();
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if (err == ERROR_ACCESS_DENIED)
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return -EACCES;
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return -1;
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}
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return 0;
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}
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2009-03-12 20:57:16 +01:00
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static int raw_read(BlockDriverState *bs, int64_t sector_num,
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uint8_t *buf, int nb_sectors)
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2007-12-15 18:28:36 +01:00
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{
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BDRVRawState *s = bs->opaque;
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OVERLAPPED ov;
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DWORD ret_count;
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int ret;
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2009-03-12 20:57:16 +01:00
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int64_t offset = sector_num * 512;
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int count = nb_sectors * 512;
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2007-12-15 18:28:36 +01:00
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memset(&ov, 0, sizeof(ov));
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ov.Offset = offset;
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ov.OffsetHigh = offset >> 32;
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ret = ReadFile(s->hfile, buf, count, &ret_count, &ov);
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2009-03-29 22:54:17 +02:00
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if (!ret)
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return ret_count;
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2009-03-13 04:12:03 +01:00
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if (ret_count == count)
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ret_count = 0;
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2007-12-15 18:28:36 +01:00
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return ret_count;
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}
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2009-03-12 20:57:16 +01:00
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static int raw_write(BlockDriverState *bs, int64_t sector_num,
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const uint8_t *buf, int nb_sectors)
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2007-12-15 18:28:36 +01:00
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{
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BDRVRawState *s = bs->opaque;
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OVERLAPPED ov;
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DWORD ret_count;
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int ret;
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2009-03-12 20:57:16 +01:00
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int64_t offset = sector_num * 512;
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int count = nb_sectors * 512;
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2007-12-15 18:28:36 +01:00
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memset(&ov, 0, sizeof(ov));
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ov.Offset = offset;
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ov.OffsetHigh = offset >> 32;
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ret = WriteFile(s->hfile, buf, count, &ret_count, &ov);
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2009-03-29 22:54:17 +02:00
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if (!ret)
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return ret_count;
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2009-03-13 04:12:03 +01:00
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if (ret_count == count)
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ret_count = 0;
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2007-12-15 18:28:36 +01:00
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return ret_count;
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}
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2010-11-07 16:10:40 +01:00
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static int raw_flush(BlockDriverState *bs)
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2007-12-15 18:28:36 +01:00
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{
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BDRVRawState *s = bs->opaque;
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2010-10-21 16:43:43 +02:00
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int ret;
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ret = FlushFileBuffers(s->hfile);
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2011-01-28 15:57:39 +01:00
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if (ret == 0) {
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2010-10-21 16:43:43 +02:00
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return -EIO;
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}
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return 0;
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2007-12-15 18:28:36 +01:00
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}
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static void raw_close(BlockDriverState *bs)
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{
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BDRVRawState *s = bs->opaque;
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CloseHandle(s->hfile);
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}
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static int raw_truncate(BlockDriverState *bs, int64_t offset)
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{
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BDRVRawState *s = bs->opaque;
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2009-04-05 20:03:31 +02:00
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LONG low, high;
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2007-12-15 18:28:36 +01:00
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low = offset;
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high = offset >> 32;
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if (!SetFilePointer(s->hfile, low, &high, FILE_BEGIN))
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return -EIO;
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if (!SetEndOfFile(s->hfile))
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return -EIO;
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return 0;
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}
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static int64_t raw_getlength(BlockDriverState *bs)
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{
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BDRVRawState *s = bs->opaque;
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LARGE_INTEGER l;
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ULARGE_INTEGER available, total, total_free;
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DISK_GEOMETRY_EX dg;
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DWORD count;
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BOOL status;
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switch(s->type) {
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case FTYPE_FILE:
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2009-04-05 20:03:31 +02:00
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l.LowPart = GetFileSize(s->hfile, (PDWORD)&l.HighPart);
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2007-12-15 18:28:36 +01:00
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if (l.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR)
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return -EIO;
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break;
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case FTYPE_CD:
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if (!GetDiskFreeSpaceEx(s->drive_path, &available, &total, &total_free))
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return -EIO;
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l.QuadPart = total.QuadPart;
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break;
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case FTYPE_HARDDISK:
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status = DeviceIoControl(s->hfile, IOCTL_DISK_GET_DRIVE_GEOMETRY_EX,
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NULL, 0, &dg, sizeof(dg), &count, NULL);
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if (status != 0) {
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l = dg.DiskSize;
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}
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break;
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default:
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return -EIO;
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}
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return l.QuadPart;
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}
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2011-07-12 13:56:39 +02:00
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static int64_t raw_get_allocated_file_size(BlockDriverState *bs)
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{
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typedef DWORD (WINAPI * get_compressed_t)(const char *filename,
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DWORD * high);
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get_compressed_t get_compressed;
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struct _stati64 st;
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const char *filename = bs->filename;
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/* WinNT support GetCompressedFileSize to determine allocate size */
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get_compressed =
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(get_compressed_t) GetProcAddress(GetModuleHandle("kernel32"),
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"GetCompressedFileSizeA");
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if (get_compressed) {
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DWORD high, low;
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low = get_compressed(filename, &high);
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if (low != 0xFFFFFFFFlu || GetLastError() == NO_ERROR) {
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return (((int64_t) high) << 32) + low;
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}
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}
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if (_stati64(filename, &st) < 0) {
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return -1;
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}
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return st.st_size;
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}
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2009-05-18 16:42:10 +02:00
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static int raw_create(const char *filename, QEMUOptionParameter *options)
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2007-12-15 18:28:36 +01:00
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{
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int fd;
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2009-05-18 16:42:10 +02:00
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int64_t total_size = 0;
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2007-12-15 18:28:36 +01:00
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2009-05-18 16:42:10 +02:00
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/* Read out options */
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while (options && options->name) {
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if (!strcmp(options->name, BLOCK_OPT_SIZE)) {
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total_size = options->value.n / 512;
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}
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options++;
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}
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2007-12-15 18:28:36 +01:00
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fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
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0644);
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if (fd < 0)
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return -EIO;
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set_sparse(fd);
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ftruncate(fd, total_size * 512);
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close(fd);
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return 0;
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}
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2009-05-18 16:42:10 +02:00
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static QEMUOptionParameter raw_create_options[] = {
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2009-06-04 15:39:38 +02:00
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{
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.name = BLOCK_OPT_SIZE,
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.type = OPT_SIZE,
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.help = "Virtual disk size"
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},
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2009-05-18 16:42:10 +02:00
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{ NULL }
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};
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2010-04-07 22:30:24 +02:00
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static BlockDriver bdrv_file = {
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.format_name = "file",
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.protocol_name = "file",
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2009-04-07 20:23:51 +02:00
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.instance_size = sizeof(BDRVRawState),
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2010-04-14 14:17:38 +02:00
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.bdrv_file_open = raw_open,
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2009-04-07 20:23:51 +02:00
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.bdrv_close = raw_close,
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.bdrv_create = raw_create,
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.bdrv_flush = raw_flush,
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.bdrv_read = raw_read,
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.bdrv_write = raw_write,
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.bdrv_truncate = raw_truncate,
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.bdrv_getlength = raw_getlength,
|
2011-07-12 13:56:39 +02:00
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.bdrv_get_allocated_file_size
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= raw_get_allocated_file_size,
|
2009-05-18 16:42:10 +02:00
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.create_options = raw_create_options,
|
2007-12-15 18:28:36 +01:00
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};
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/***********************************************/
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/* host device */
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static int find_cdrom(char *cdrom_name, int cdrom_name_size)
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{
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char drives[256], *pdrv = drives;
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UINT type;
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memset(drives, 0, sizeof(drives));
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GetLogicalDriveStrings(sizeof(drives), drives);
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while(pdrv[0] != '\0') {
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type = GetDriveType(pdrv);
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switch(type) {
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case DRIVE_CDROM:
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snprintf(cdrom_name, cdrom_name_size, "\\\\.\\%c:", pdrv[0]);
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return 0;
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break;
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}
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pdrv += lstrlen(pdrv) + 1;
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}
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return -1;
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}
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|
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static int find_device_type(BlockDriverState *bs, const char *filename)
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|
|
{
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BDRVRawState *s = bs->opaque;
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UINT type;
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const char *p;
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if (strstart(filename, "\\\\.\\", &p) ||
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strstart(filename, "//./", &p)) {
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|
|
if (stristart(p, "PhysicalDrive", NULL))
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|
return FTYPE_HARDDISK;
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|
|
snprintf(s->drive_path, sizeof(s->drive_path), "%c:\\", p[0]);
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|
|
type = GetDriveType(s->drive_path);
|
2009-04-07 03:24:53 +02:00
|
|
|
switch (type) {
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|
|
case DRIVE_REMOVABLE:
|
|
|
|
case DRIVE_FIXED:
|
|
|
|
return FTYPE_HARDDISK;
|
|
|
|
case DRIVE_CDROM:
|
2007-12-15 18:28:36 +01:00
|
|
|
return FTYPE_CD;
|
2009-04-07 03:24:53 +02:00
|
|
|
default:
|
2007-12-15 18:28:36 +01:00
|
|
|
return FTYPE_FILE;
|
2009-04-07 03:24:53 +02:00
|
|
|
}
|
2007-12-15 18:28:36 +01:00
|
|
|
} else {
|
|
|
|
return FTYPE_FILE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-06-15 14:04:22 +02:00
|
|
|
static int hdev_probe_device(const char *filename)
|
|
|
|
{
|
|
|
|
if (strstart(filename, "/dev/cdrom", NULL))
|
|
|
|
return 100;
|
|
|
|
if (is_windows_drive(filename))
|
|
|
|
return 100;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2007-12-15 18:28:36 +01:00
|
|
|
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);
|
|
|
|
|
2010-01-17 15:48:13 +01:00
|
|
|
if (flags & BDRV_O_RDWR) {
|
2007-12-15 18:28:36 +01:00
|
|
|
access_flags = GENERIC_READ | GENERIC_WRITE;
|
|
|
|
} else {
|
|
|
|
access_flags = GENERIC_READ;
|
|
|
|
}
|
|
|
|
create_flags = OPEN_EXISTING;
|
|
|
|
|
2008-09-15 17:51:35 +02:00
|
|
|
overlapped = FILE_ATTRIBUTE_NORMAL;
|
2011-05-17 18:04:06 +02:00
|
|
|
if (flags & BDRV_O_NOCACHE)
|
|
|
|
overlapped |= FILE_FLAG_NO_BUFFERING;
|
|
|
|
if (!(flags & BDRV_O_CACHE_WB))
|
2008-10-14 16:42:54 +02:00
|
|
|
overlapped |= FILE_FLAG_WRITE_THROUGH;
|
2007-12-15 18:28:36 +01:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2010-07-28 11:26:29 +02:00
|
|
|
static int hdev_has_zero_init(BlockDriverState *bs)
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-05-10 00:03:42 +02:00
|
|
|
static BlockDriver bdrv_host_device = {
|
2009-03-07 23:00:29 +01:00
|
|
|
.format_name = "host_device",
|
2010-04-07 22:30:24 +02:00
|
|
|
.protocol_name = "host_device",
|
2009-03-07 23:00:29 +01:00
|
|
|
.instance_size = sizeof(BDRVRawState),
|
2009-06-15 14:04:22 +02:00
|
|
|
.bdrv_probe_device = hdev_probe_device,
|
2010-04-14 14:17:38 +02:00
|
|
|
.bdrv_file_open = hdev_open,
|
2009-03-07 23:00:29 +01:00
|
|
|
.bdrv_close = raw_close,
|
|
|
|
.bdrv_flush = raw_flush,
|
2010-07-28 11:26:29 +02:00
|
|
|
.bdrv_has_zero_init = hdev_has_zero_init,
|
2007-12-15 18:28:36 +01:00
|
|
|
|
2009-03-12 20:57:16 +01:00
|
|
|
.bdrv_read = raw_read,
|
|
|
|
.bdrv_write = raw_write,
|
2009-03-07 23:00:29 +01:00
|
|
|
.bdrv_getlength = raw_getlength,
|
2011-07-12 13:56:39 +02:00
|
|
|
.bdrv_get_allocated_file_size
|
|
|
|
= raw_get_allocated_file_size,
|
2007-12-15 18:28:36 +01:00
|
|
|
};
|
2009-05-10 00:03:42 +02:00
|
|
|
|
2010-04-07 22:30:24 +02:00
|
|
|
static void bdrv_file_init(void)
|
2009-05-10 00:03:42 +02:00
|
|
|
{
|
2010-04-07 22:30:24 +02:00
|
|
|
bdrv_register(&bdrv_file);
|
2009-05-10 00:03:42 +02:00
|
|
|
bdrv_register(&bdrv_host_device);
|
|
|
|
}
|
|
|
|
|
2010-04-07 22:30:24 +02:00
|
|
|
block_init(bdrv_file_init);
|