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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" |
25 |
#include "qemu/timer.h" |
26 |
#include "block/block_int.h" |
27 |
#include "qemu/module.h" |
28 |
#include "raw-aio.h" |
29 |
#include "trace.h" |
30 |
#include "block/thread-pool.h" |
31 |
#include "qemu/iov.h" |
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#include <windows.h> |
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#include <winioctl.h> |
34 |
|
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#define FTYPE_FILE 0 |
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#define FTYPE_CD 1 |
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#define FTYPE_HARDDISK 2 |
38 |
|
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static QEMUWin32AIOState *aio;
|
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|
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typedef struct RawWin32AIOData { |
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BlockDriverState *bs; |
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HANDLE hfile; |
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struct iovec *aio_iov;
|
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int aio_niov;
|
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size_t aio_nbytes; |
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off64_t aio_offset; |
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int aio_type;
|
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} RawWin32AIOData; |
50 |
|
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typedef struct BDRVRawState { |
52 |
HANDLE hfile; |
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int type;
|
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char drive_path[16]; /* format: "d:\" */ |
55 |
QEMUWin32AIOState *aio; |
56 |
} BDRVRawState; |
57 |
|
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/*
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* Read/writes the data to/from a given linear buffer.
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*
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* Returns the number of bytes handles or -errno in case of an error. Short
|
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* reads are only returned if the end of the file is reached.
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*/
|
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static size_t handle_aiocb_rw(RawWin32AIOData *aiocb)
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{ |
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size_t offset = 0;
|
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int i;
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|
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for (i = 0; i < aiocb->aio_niov; i++) { |
70 |
OVERLAPPED ov; |
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DWORD ret, ret_count, len; |
72 |
|
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memset(&ov, 0, sizeof(ov)); |
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ov.Offset = (aiocb->aio_offset + offset); |
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ov.OffsetHigh = (aiocb->aio_offset + offset) >> 32;
|
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len = aiocb->aio_iov[i].iov_len; |
77 |
if (aiocb->aio_type & QEMU_AIO_WRITE) {
|
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ret = WriteFile(aiocb->hfile, aiocb->aio_iov[i].iov_base, |
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len, &ret_count, &ov); |
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} else {
|
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ret = ReadFile(aiocb->hfile, aiocb->aio_iov[i].iov_base, |
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len, &ret_count, &ov); |
83 |
} |
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if (!ret) {
|
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ret_count = 0;
|
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} |
87 |
if (ret_count != len) {
|
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offset += ret_count; |
89 |
break;
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} |
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offset += len; |
92 |
} |
93 |
|
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return offset;
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} |
96 |
|
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static int aio_worker(void *arg) |
98 |
{ |
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RawWin32AIOData *aiocb = arg; |
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ssize_t ret = 0;
|
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size_t count; |
102 |
|
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switch (aiocb->aio_type & QEMU_AIO_TYPE_MASK) {
|
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case QEMU_AIO_READ:
|
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count = handle_aiocb_rw(aiocb); |
106 |
if (count < aiocb->aio_nbytes && aiocb->bs->growable) {
|
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/* A short read means that we have reached EOF. Pad the buffer
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* with zeros for bytes after EOF. */
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iov_memset(aiocb->aio_iov, aiocb->aio_niov, count, |
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0, aiocb->aio_nbytes - count);
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|
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count = aiocb->aio_nbytes; |
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} |
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if (count == aiocb->aio_nbytes) {
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ret = 0;
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} else {
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ret = -EINVAL; |
118 |
} |
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break;
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case QEMU_AIO_WRITE:
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count = handle_aiocb_rw(aiocb); |
122 |
if (count == aiocb->aio_nbytes) {
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count = 0;
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} else {
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count = -EINVAL; |
126 |
} |
127 |
break;
|
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case QEMU_AIO_FLUSH:
|
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if (!FlushFileBuffers(aiocb->hfile)) {
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return -EIO;
|
131 |
} |
132 |
break;
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default:
|
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fprintf(stderr, "invalid aio request (0x%x)\n", aiocb->aio_type);
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ret = -EINVAL; |
136 |
break;
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} |
138 |
|
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g_slice_free(RawWin32AIOData, aiocb); |
140 |
return ret;
|
141 |
} |
142 |
|
143 |
static BlockDriverAIOCB *paio_submit(BlockDriverState *bs, HANDLE hfile,
|
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int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
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BlockDriverCompletionFunc *cb, void *opaque, int type) |
146 |
{ |
147 |
RawWin32AIOData *acb = g_slice_new(RawWin32AIOData); |
148 |
ThreadPool *pool; |
149 |
|
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acb->bs = bs; |
151 |
acb->hfile = hfile; |
152 |
acb->aio_type = type; |
153 |
|
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if (qiov) {
|
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acb->aio_iov = qiov->iov; |
156 |
acb->aio_niov = qiov->niov; |
157 |
} |
158 |
acb->aio_nbytes = nb_sectors * 512;
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acb->aio_offset = sector_num * 512;
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|
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trace_paio_submit(acb, opaque, sector_num, nb_sectors, type); |
162 |
pool = aio_get_thread_pool(bdrv_get_aio_context(bs)); |
163 |
return thread_pool_submit_aio(pool, aio_worker, acb, cb, opaque);
|
164 |
} |
165 |
|
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int qemu_ftruncate64(int fd, int64_t length) |
167 |
{ |
168 |
LARGE_INTEGER li; |
169 |
DWORD dw; |
170 |
LONG high; |
171 |
HANDLE h; |
172 |
BOOL res; |
173 |
|
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if ((GetVersion() & 0x80000000UL) && (length >> 32) != 0) |
175 |
return -1; |
176 |
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h = (HANDLE)_get_osfhandle(fd); |
178 |
|
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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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if (li.LowPart == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) {
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return -1; |
184 |
} |
185 |
|
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high = length >> 32;
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dw = SetFilePointer(h, (DWORD) length, &high, FILE_BEGIN); |
188 |
if (dw == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) {
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return -1; |
190 |
} |
191 |
res = SetEndOfFile(h); |
192 |
|
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/* back to old position */
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SetFilePointer(h, li.LowPart, &li.HighPart, FILE_BEGIN); |
195 |
return res ? 0 : -1; |
196 |
} |
197 |
|
198 |
static int set_sparse(int fd) |
199 |
{ |
200 |
DWORD returned; |
201 |
return (int) DeviceIoControl((HANDLE)_get_osfhandle(fd), FSCTL_SET_SPARSE, |
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NULL, 0, NULL, 0, &returned, NULL); |
203 |
} |
204 |
|
205 |
static void raw_parse_flags(int flags, int *access_flags, DWORD *overlapped) |
206 |
{ |
207 |
assert(access_flags != NULL);
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assert(overlapped != NULL);
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209 |
|
210 |
if (flags & BDRV_O_RDWR) {
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*access_flags = GENERIC_READ | GENERIC_WRITE; |
212 |
} else {
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*access_flags = GENERIC_READ; |
214 |
} |
215 |
|
216 |
*overlapped = FILE_ATTRIBUTE_NORMAL; |
217 |
if (flags & BDRV_O_NATIVE_AIO) {
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*overlapped |= FILE_FLAG_OVERLAPPED; |
219 |
} |
220 |
if (flags & BDRV_O_NOCACHE) {
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*overlapped |= FILE_FLAG_NO_BUFFERING; |
222 |
} |
223 |
} |
224 |
|
225 |
static QemuOptsList raw_runtime_opts = {
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.name = "raw",
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.head = QTAILQ_HEAD_INITIALIZER(raw_runtime_opts.head), |
228 |
.desc = { |
229 |
{ |
230 |
.name = "filename",
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.type = QEMU_OPT_STRING, |
232 |
.help = "File name of the image",
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}, |
234 |
{ /* end of list */ }
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}, |
236 |
}; |
237 |
|
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static int raw_open(BlockDriverState *bs, QDict *options, int flags, |
239 |
Error **errp) |
240 |
{ |
241 |
BDRVRawState *s = bs->opaque; |
242 |
int access_flags;
|
243 |
DWORD overlapped; |
244 |
QemuOpts *opts; |
245 |
Error *local_err = NULL;
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246 |
const char *filename; |
247 |
int ret;
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248 |
|
249 |
s->type = FTYPE_FILE; |
250 |
|
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opts = qemu_opts_create_nofail(&raw_runtime_opts); |
252 |
qemu_opts_absorb_qdict(opts, options, &local_err); |
253 |
if (error_is_set(&local_err)) {
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qerror_report_err(local_err); |
255 |
error_free(local_err); |
256 |
ret = -EINVAL; |
257 |
goto fail;
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258 |
} |
259 |
|
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filename = qemu_opt_get(opts, "filename");
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|
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raw_parse_flags(flags, &access_flags, &overlapped); |
263 |
|
264 |
if ((flags & BDRV_O_NATIVE_AIO) && aio == NULL) { |
265 |
aio = win32_aio_init(); |
266 |
if (aio == NULL) { |
267 |
ret = -EINVAL; |
268 |
goto fail;
|
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} |
270 |
} |
271 |
|
272 |
s->hfile = CreateFile(filename, access_flags, |
273 |
FILE_SHARE_READ, NULL,
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OPEN_EXISTING, overlapped, NULL);
|
275 |
if (s->hfile == INVALID_HANDLE_VALUE) {
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276 |
int err = GetLastError();
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277 |
|
278 |
if (err == ERROR_ACCESS_DENIED) {
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279 |
ret = -EACCES; |
280 |
} else {
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281 |
ret = -EINVAL; |
282 |
} |
283 |
goto fail;
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284 |
} |
285 |
|
286 |
if (flags & BDRV_O_NATIVE_AIO) {
|
287 |
ret = win32_aio_attach(aio, s->hfile); |
288 |
if (ret < 0) { |
289 |
CloseHandle(s->hfile); |
290 |
goto fail;
|
291 |
} |
292 |
s->aio = aio; |
293 |
} |
294 |
|
295 |
ret = 0;
|
296 |
fail:
|
297 |
qemu_opts_del(opts); |
298 |
return ret;
|
299 |
} |
300 |
|
301 |
static BlockDriverAIOCB *raw_aio_readv(BlockDriverState *bs,
|
302 |
int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
|
303 |
BlockDriverCompletionFunc *cb, void *opaque)
|
304 |
{ |
305 |
BDRVRawState *s = bs->opaque; |
306 |
if (s->aio) {
|
307 |
return win32_aio_submit(bs, s->aio, s->hfile, sector_num, qiov,
|
308 |
nb_sectors, cb, opaque, QEMU_AIO_READ); |
309 |
} else {
|
310 |
return paio_submit(bs, s->hfile, sector_num, qiov, nb_sectors,
|
311 |
cb, opaque, QEMU_AIO_READ); |
312 |
} |
313 |
} |
314 |
|
315 |
static BlockDriverAIOCB *raw_aio_writev(BlockDriverState *bs,
|
316 |
int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
|
317 |
BlockDriverCompletionFunc *cb, void *opaque)
|
318 |
{ |
319 |
BDRVRawState *s = bs->opaque; |
320 |
if (s->aio) {
|
321 |
return win32_aio_submit(bs, s->aio, s->hfile, sector_num, qiov,
|
322 |
nb_sectors, cb, opaque, QEMU_AIO_WRITE); |
323 |
} else {
|
324 |
return paio_submit(bs, s->hfile, sector_num, qiov, nb_sectors,
|
325 |
cb, opaque, QEMU_AIO_WRITE); |
326 |
} |
327 |
} |
328 |
|
329 |
static BlockDriverAIOCB *raw_aio_flush(BlockDriverState *bs,
|
330 |
BlockDriverCompletionFunc *cb, void *opaque)
|
331 |
{ |
332 |
BDRVRawState *s = bs->opaque; |
333 |
return paio_submit(bs, s->hfile, 0, NULL, 0, cb, opaque, QEMU_AIO_FLUSH); |
334 |
} |
335 |
|
336 |
static void raw_close(BlockDriverState *bs) |
337 |
{ |
338 |
BDRVRawState *s = bs->opaque; |
339 |
CloseHandle(s->hfile); |
340 |
} |
341 |
|
342 |
static int raw_truncate(BlockDriverState *bs, int64_t offset) |
343 |
{ |
344 |
BDRVRawState *s = bs->opaque; |
345 |
LONG low, high; |
346 |
DWORD dwPtrLow; |
347 |
|
348 |
low = offset; |
349 |
high = offset >> 32;
|
350 |
|
351 |
/*
|
352 |
* An error has occurred if the return value is INVALID_SET_FILE_POINTER
|
353 |
* and GetLastError doesn't return NO_ERROR.
|
354 |
*/
|
355 |
dwPtrLow = SetFilePointer(s->hfile, low, &high, FILE_BEGIN); |
356 |
if (dwPtrLow == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) {
|
357 |
fprintf(stderr, "SetFilePointer error: %lu\n", GetLastError());
|
358 |
return -EIO;
|
359 |
} |
360 |
if (SetEndOfFile(s->hfile) == 0) { |
361 |
fprintf(stderr, "SetEndOfFile error: %lu\n", GetLastError());
|
362 |
return -EIO;
|
363 |
} |
364 |
return 0; |
365 |
} |
366 |
|
367 |
static int64_t raw_getlength(BlockDriverState *bs)
|
368 |
{ |
369 |
BDRVRawState *s = bs->opaque; |
370 |
LARGE_INTEGER l; |
371 |
ULARGE_INTEGER available, total, total_free; |
372 |
DISK_GEOMETRY_EX dg; |
373 |
DWORD count; |
374 |
BOOL status; |
375 |
|
376 |
switch(s->type) {
|
377 |
case FTYPE_FILE:
|
378 |
l.LowPart = GetFileSize(s->hfile, (PDWORD)&l.HighPart); |
379 |
if (l.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR) |
380 |
return -EIO;
|
381 |
break;
|
382 |
case FTYPE_CD:
|
383 |
if (!GetDiskFreeSpaceEx(s->drive_path, &available, &total, &total_free))
|
384 |
return -EIO;
|
385 |
l.QuadPart = total.QuadPart; |
386 |
break;
|
387 |
case FTYPE_HARDDISK:
|
388 |
status = DeviceIoControl(s->hfile, IOCTL_DISK_GET_DRIVE_GEOMETRY_EX, |
389 |
NULL, 0, &dg, sizeof(dg), &count, NULL); |
390 |
if (status != 0) { |
391 |
l = dg.DiskSize; |
392 |
} |
393 |
break;
|
394 |
default:
|
395 |
return -EIO;
|
396 |
} |
397 |
return l.QuadPart;
|
398 |
} |
399 |
|
400 |
static int64_t raw_get_allocated_file_size(BlockDriverState *bs)
|
401 |
{ |
402 |
typedef DWORD (WINAPI * get_compressed_t)(const char *filename, |
403 |
DWORD * high); |
404 |
get_compressed_t get_compressed; |
405 |
struct _stati64 st;
|
406 |
const char *filename = bs->filename; |
407 |
/* WinNT support GetCompressedFileSize to determine allocate size */
|
408 |
get_compressed = |
409 |
(get_compressed_t) GetProcAddress(GetModuleHandle("kernel32"),
|
410 |
"GetCompressedFileSizeA");
|
411 |
if (get_compressed) {
|
412 |
DWORD high, low; |
413 |
low = get_compressed(filename, &high); |
414 |
if (low != 0xFFFFFFFFlu || GetLastError() == NO_ERROR) { |
415 |
return (((int64_t) high) << 32) + low; |
416 |
} |
417 |
} |
418 |
|
419 |
if (_stati64(filename, &st) < 0) { |
420 |
return -1; |
421 |
} |
422 |
return st.st_size;
|
423 |
} |
424 |
|
425 |
static int raw_create(const char *filename, QEMUOptionParameter *options, |
426 |
Error **errp) |
427 |
{ |
428 |
int fd;
|
429 |
int64_t total_size = 0;
|
430 |
|
431 |
/* Read out options */
|
432 |
while (options && options->name) {
|
433 |
if (!strcmp(options->name, BLOCK_OPT_SIZE)) {
|
434 |
total_size = options->value.n / 512;
|
435 |
} |
436 |
options++; |
437 |
} |
438 |
|
439 |
fd = qemu_open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
440 |
0644);
|
441 |
if (fd < 0) |
442 |
return -EIO;
|
443 |
set_sparse(fd); |
444 |
ftruncate(fd, total_size * 512);
|
445 |
qemu_close(fd); |
446 |
return 0; |
447 |
} |
448 |
|
449 |
static QEMUOptionParameter raw_create_options[] = {
|
450 |
{ |
451 |
.name = BLOCK_OPT_SIZE, |
452 |
.type = OPT_SIZE, |
453 |
.help = "Virtual disk size"
|
454 |
}, |
455 |
{ NULL }
|
456 |
}; |
457 |
|
458 |
static BlockDriver bdrv_file = {
|
459 |
.format_name = "file",
|
460 |
.protocol_name = "file",
|
461 |
.instance_size = sizeof(BDRVRawState),
|
462 |
.bdrv_file_open = raw_open, |
463 |
.bdrv_close = raw_close, |
464 |
.bdrv_create = raw_create, |
465 |
.bdrv_has_zero_init = bdrv_has_zero_init_1, |
466 |
|
467 |
.bdrv_aio_readv = raw_aio_readv, |
468 |
.bdrv_aio_writev = raw_aio_writev, |
469 |
.bdrv_aio_flush = raw_aio_flush, |
470 |
|
471 |
.bdrv_truncate = raw_truncate, |
472 |
.bdrv_getlength = raw_getlength, |
473 |
.bdrv_get_allocated_file_size |
474 |
= raw_get_allocated_file_size, |
475 |
|
476 |
.create_options = raw_create_options, |
477 |
}; |
478 |
|
479 |
/***********************************************/
|
480 |
/* host device */
|
481 |
|
482 |
static int find_cdrom(char *cdrom_name, int cdrom_name_size) |
483 |
{ |
484 |
char drives[256], *pdrv = drives; |
485 |
UINT type; |
486 |
|
487 |
memset(drives, 0, sizeof(drives)); |
488 |
GetLogicalDriveStrings(sizeof(drives), drives);
|
489 |
while(pdrv[0] != '\0') { |
490 |
type = GetDriveType(pdrv); |
491 |
switch(type) {
|
492 |
case DRIVE_CDROM:
|
493 |
snprintf(cdrom_name, cdrom_name_size, "\\\\.\\%c:", pdrv[0]); |
494 |
return 0; |
495 |
break;
|
496 |
} |
497 |
pdrv += lstrlen(pdrv) + 1;
|
498 |
} |
499 |
return -1; |
500 |
} |
501 |
|
502 |
static int find_device_type(BlockDriverState *bs, const char *filename) |
503 |
{ |
504 |
BDRVRawState *s = bs->opaque; |
505 |
UINT type; |
506 |
const char *p; |
507 |
|
508 |
if (strstart(filename, "\\\\.\\", &p) || |
509 |
strstart(filename, "//./", &p)) {
|
510 |
if (stristart(p, "PhysicalDrive", NULL)) |
511 |
return FTYPE_HARDDISK;
|
512 |
snprintf(s->drive_path, sizeof(s->drive_path), "%c:\\", p[0]); |
513 |
type = GetDriveType(s->drive_path); |
514 |
switch (type) {
|
515 |
case DRIVE_REMOVABLE:
|
516 |
case DRIVE_FIXED:
|
517 |
return FTYPE_HARDDISK;
|
518 |
case DRIVE_CDROM:
|
519 |
return FTYPE_CD;
|
520 |
default:
|
521 |
return FTYPE_FILE;
|
522 |
} |
523 |
} else {
|
524 |
return FTYPE_FILE;
|
525 |
} |
526 |
} |
527 |
|
528 |
static int hdev_probe_device(const char *filename) |
529 |
{ |
530 |
if (strstart(filename, "/dev/cdrom", NULL)) |
531 |
return 100; |
532 |
if (is_windows_drive(filename))
|
533 |
return 100; |
534 |
return 0; |
535 |
} |
536 |
|
537 |
static int hdev_open(BlockDriverState *bs, QDict *options, int flags, |
538 |
Error **errp) |
539 |
{ |
540 |
BDRVRawState *s = bs->opaque; |
541 |
int access_flags, create_flags;
|
542 |
int ret = 0; |
543 |
DWORD overlapped; |
544 |
char device_name[64]; |
545 |
|
546 |
Error *local_err = NULL;
|
547 |
const char *filename; |
548 |
|
549 |
QemuOpts *opts = qemu_opts_create_nofail(&raw_runtime_opts); |
550 |
qemu_opts_absorb_qdict(opts, options, &local_err); |
551 |
if (error_is_set(&local_err)) {
|
552 |
qerror_report_err(local_err); |
553 |
error_free(local_err); |
554 |
ret = -EINVAL; |
555 |
goto done;
|
556 |
} |
557 |
|
558 |
filename = qemu_opt_get(opts, "filename");
|
559 |
|
560 |
if (strstart(filename, "/dev/cdrom", NULL)) { |
561 |
if (find_cdrom(device_name, sizeof(device_name)) < 0) { |
562 |
ret = -ENOENT; |
563 |
goto done;
|
564 |
} |
565 |
filename = device_name; |
566 |
} else {
|
567 |
/* transform drive letters into device name */
|
568 |
if (((filename[0] >= 'a' && filename[0] <= 'z') || |
569 |
(filename[0] >= 'A' && filename[0] <= 'Z')) && |
570 |
filename[1] == ':' && filename[2] == '\0') { |
571 |
snprintf(device_name, sizeof(device_name), "\\\\.\\%c:", filename[0]); |
572 |
filename = device_name; |
573 |
} |
574 |
} |
575 |
s->type = find_device_type(bs, filename); |
576 |
|
577 |
raw_parse_flags(flags, &access_flags, &overlapped); |
578 |
|
579 |
create_flags = OPEN_EXISTING; |
580 |
|
581 |
s->hfile = CreateFile(filename, access_flags, |
582 |
FILE_SHARE_READ, NULL,
|
583 |
create_flags, overlapped, NULL);
|
584 |
if (s->hfile == INVALID_HANDLE_VALUE) {
|
585 |
int err = GetLastError();
|
586 |
|
587 |
if (err == ERROR_ACCESS_DENIED) {
|
588 |
ret = -EACCES; |
589 |
} else {
|
590 |
ret = -1;
|
591 |
} |
592 |
goto done;
|
593 |
} |
594 |
|
595 |
done:
|
596 |
qemu_opts_del(opts); |
597 |
return ret;
|
598 |
} |
599 |
|
600 |
static BlockDriver bdrv_host_device = {
|
601 |
.format_name = "host_device",
|
602 |
.protocol_name = "host_device",
|
603 |
.instance_size = sizeof(BDRVRawState),
|
604 |
.bdrv_probe_device = hdev_probe_device, |
605 |
.bdrv_file_open = hdev_open, |
606 |
.bdrv_close = raw_close, |
607 |
|
608 |
.bdrv_aio_readv = raw_aio_readv, |
609 |
.bdrv_aio_writev = raw_aio_writev, |
610 |
.bdrv_aio_flush = raw_aio_flush, |
611 |
|
612 |
.bdrv_getlength = raw_getlength, |
613 |
.bdrv_get_allocated_file_size |
614 |
= raw_get_allocated_file_size, |
615 |
}; |
616 |
|
617 |
static void bdrv_file_init(void) |
618 |
{ |
619 |
bdrv_register(&bdrv_file); |
620 |
bdrv_register(&bdrv_host_device); |
621 |
} |
622 |
|
623 |
block_init(bdrv_file_init); |