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/*
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---|---|
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* Block driver for RAW files
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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 "vl.h" |
25 |
#include "block_int.h" |
26 |
#include <assert.h> |
27 |
#ifndef _WIN32
|
28 |
#include <aio.h> |
29 |
|
30 |
#ifndef QEMU_TOOL
|
31 |
#include "exec-all.h" |
32 |
#endif
|
33 |
|
34 |
#ifdef CONFIG_COCOA
|
35 |
#include <paths.h> |
36 |
#include <sys/param.h> |
37 |
#include <IOKit/IOKitLib.h> |
38 |
#include <IOKit/IOBSD.h> |
39 |
#include <IOKit/storage/IOMediaBSDClient.h> |
40 |
#include <IOKit/storage/IOMedia.h> |
41 |
#include <IOKit/storage/IOCDMedia.h> |
42 |
//#include <IOKit/storage/IOCDTypes.h>
|
43 |
#include <CoreFoundation/CoreFoundation.h> |
44 |
#endif
|
45 |
|
46 |
#ifdef __sun__
|
47 |
#define _POSIX_PTHREAD_SEMANTICS 1 |
48 |
#include <signal.h> |
49 |
#include <sys/dkio.h> |
50 |
#endif
|
51 |
#ifdef __linux__
|
52 |
#include <sys/ioctl.h> |
53 |
#include <linux/cdrom.h> |
54 |
#include <linux/fd.h> |
55 |
#endif
|
56 |
#ifdef __FreeBSD__
|
57 |
#include <sys/disk.h> |
58 |
#endif
|
59 |
|
60 |
//#define DEBUG_FLOPPY
|
61 |
|
62 |
#define DEBUG_BLOCK
|
63 |
#if defined(DEBUG_BLOCK) && !defined(QEMU_TOOL)
|
64 |
#define DEBUG_BLOCK_PRINT(formatCstr, args...) do { if (loglevel != 0) \ |
65 |
{ fprintf(stderr, formatCstr, ##args); fflush(stderr); } } while (0) |
66 |
#else
|
67 |
#define DEBUG_BLOCK_PRINT(formatCstr, args...)
|
68 |
#endif
|
69 |
|
70 |
#define FTYPE_FILE 0 |
71 |
#define FTYPE_CD 1 |
72 |
#define FTYPE_FD 2 |
73 |
|
74 |
/* if the FD is not accessed during that time (in ms), we try to
|
75 |
reopen it to see if the disk has been changed */
|
76 |
#define FD_OPEN_TIMEOUT 1000 |
77 |
|
78 |
typedef struct BDRVRawState { |
79 |
int fd;
|
80 |
int type;
|
81 |
unsigned int lseek_err_cnt; |
82 |
#if defined(__linux__)
|
83 |
/* linux floppy specific */
|
84 |
int fd_open_flags;
|
85 |
int64_t fd_open_time; |
86 |
int64_t fd_error_time; |
87 |
int fd_got_error;
|
88 |
int fd_media_changed;
|
89 |
#endif
|
90 |
} BDRVRawState; |
91 |
|
92 |
static int fd_open(BlockDriverState *bs); |
93 |
|
94 |
static int raw_open(BlockDriverState *bs, const char *filename, int flags) |
95 |
{ |
96 |
BDRVRawState *s = bs->opaque; |
97 |
int fd, open_flags, ret;
|
98 |
|
99 |
s->lseek_err_cnt = 0;
|
100 |
|
101 |
open_flags = O_BINARY; |
102 |
if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
103 |
open_flags |= O_RDWR; |
104 |
} else {
|
105 |
open_flags |= O_RDONLY; |
106 |
bs->read_only = 1;
|
107 |
} |
108 |
if (flags & BDRV_O_CREAT)
|
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open_flags |= O_CREAT | O_TRUNC; |
110 |
|
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s->type = FTYPE_FILE; |
112 |
|
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fd = open(filename, open_flags, 0644);
|
114 |
if (fd < 0) { |
115 |
ret = -errno; |
116 |
if (ret == -EROFS)
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117 |
ret = -EACCES; |
118 |
return ret;
|
119 |
} |
120 |
s->fd = fd; |
121 |
return 0; |
122 |
} |
123 |
|
124 |
/* XXX: use host sector size if necessary with:
|
125 |
#ifdef DIOCGSECTORSIZE
|
126 |
{
|
127 |
unsigned int sectorsize = 512;
|
128 |
if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) &&
|
129 |
sectorsize > bufsize)
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bufsize = sectorsize;
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131 |
}
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132 |
#endif
|
133 |
#ifdef CONFIG_COCOA
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134 |
u_int32_t blockSize = 512;
|
135 |
if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) {
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136 |
bufsize = blockSize;
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137 |
}
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138 |
#endif
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*/
|
140 |
|
141 |
static int raw_pread(BlockDriverState *bs, int64_t offset, |
142 |
uint8_t *buf, int count)
|
143 |
{ |
144 |
BDRVRawState *s = bs->opaque; |
145 |
int ret;
|
146 |
|
147 |
ret = fd_open(bs); |
148 |
if (ret < 0) |
149 |
return ret;
|
150 |
|
151 |
if (lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
152 |
++(s->lseek_err_cnt); |
153 |
if(s->lseek_err_cnt <= 10) { |
154 |
DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %lld, %p, %d) [%lld] lseek failed : %d = %s\n",
|
155 |
s->fd, bs->filename, offset, buf, count, |
156 |
bs->total_sectors, errno, strerror(errno)); |
157 |
} |
158 |
return -1; |
159 |
} |
160 |
s->lseek_err_cnt=0;
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161 |
|
162 |
ret = read(s->fd, buf, count); |
163 |
if (ret == count)
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goto label__raw_read__success;
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165 |
|
166 |
DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %lld, %p, %d) [%lld] read failed %d : %d = %s\n",
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167 |
s->fd, bs->filename, offset, buf, count, |
168 |
bs->total_sectors, ret, errno, strerror(errno)); |
169 |
|
170 |
/* Try harder for CDrom. */
|
171 |
if (bs->type == BDRV_TYPE_CDROM) {
|
172 |
lseek(s->fd, offset, SEEK_SET); |
173 |
ret = read(s->fd, buf, count); |
174 |
if (ret == count)
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goto label__raw_read__success;
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176 |
lseek(s->fd, offset, SEEK_SET); |
177 |
ret = read(s->fd, buf, count); |
178 |
if (ret == count)
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goto label__raw_read__success;
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180 |
|
181 |
DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %lld, %p, %d) [%lld] retry read failed %d : %d = %s\n",
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s->fd, bs->filename, offset, buf, count, |
183 |
bs->total_sectors, ret, errno, strerror(errno)); |
184 |
} |
185 |
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label__raw_read__success:
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187 |
|
188 |
return ret;
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189 |
} |
190 |
|
191 |
static int raw_pwrite(BlockDriverState *bs, int64_t offset, |
192 |
const uint8_t *buf, int count) |
193 |
{ |
194 |
BDRVRawState *s = bs->opaque; |
195 |
int ret;
|
196 |
|
197 |
ret = fd_open(bs); |
198 |
if (ret < 0) |
199 |
return ret;
|
200 |
|
201 |
if (lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
202 |
++(s->lseek_err_cnt); |
203 |
if(s->lseek_err_cnt) {
|
204 |
DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %lld, %p, %d) [%lld] lseek failed : %d = %s\n",
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s->fd, bs->filename, offset, buf, count, |
206 |
bs->total_sectors, errno, strerror(errno)); |
207 |
} |
208 |
return -1; |
209 |
} |
210 |
s->lseek_err_cnt = 0;
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211 |
|
212 |
ret = write(s->fd, buf, count); |
213 |
if (ret == count)
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214 |
goto label__raw_write__success;
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215 |
|
216 |
DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %lld, %p, %d) [%lld] write failed %d : %d = %s\n",
|
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s->fd, bs->filename, offset, buf, count, |
218 |
bs->total_sectors, ret, errno, strerror(errno)); |
219 |
|
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label__raw_write__success:
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return ret;
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223 |
} |
224 |
|
225 |
/***********************************************************/
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/* Unix AIO using POSIX AIO */
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|
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typedef struct RawAIOCB { |
229 |
BlockDriverAIOCB common; |
230 |
struct aiocb aiocb;
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struct RawAIOCB *next;
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} RawAIOCB; |
233 |
|
234 |
static int aio_sig_num = SIGUSR2; |
235 |
static RawAIOCB *first_aio; /* AIO issued */ |
236 |
static int aio_initialized = 0; |
237 |
|
238 |
static void aio_signal_handler(int signum) |
239 |
{ |
240 |
#ifndef QEMU_TOOL
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241 |
CPUState *env = cpu_single_env; |
242 |
if (env) {
|
243 |
/* stop the currently executing cpu because a timer occured */
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244 |
cpu_interrupt(env, CPU_INTERRUPT_EXIT); |
245 |
#ifdef USE_KQEMU
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246 |
if (env->kqemu_enabled) {
|
247 |
kqemu_cpu_interrupt(env); |
248 |
} |
249 |
#endif
|
250 |
} |
251 |
#endif
|
252 |
} |
253 |
|
254 |
void qemu_aio_init(void) |
255 |
{ |
256 |
struct sigaction act;
|
257 |
|
258 |
aio_initialized = 1;
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259 |
|
260 |
sigfillset(&act.sa_mask); |
261 |
act.sa_flags = 0; /* do not restart syscalls to interrupt select() */ |
262 |
act.sa_handler = aio_signal_handler; |
263 |
sigaction(aio_sig_num, &act, NULL);
|
264 |
|
265 |
#if defined(__GLIBC__) && defined(__linux__)
|
266 |
{ |
267 |
/* XXX: aio thread exit seems to hang on RedHat 9 and this init
|
268 |
seems to fix the problem. */
|
269 |
struct aioinit ai;
|
270 |
memset(&ai, 0, sizeof(ai)); |
271 |
ai.aio_threads = 1;
|
272 |
ai.aio_num = 1;
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273 |
ai.aio_idle_time = 365 * 100000; |
274 |
aio_init(&ai); |
275 |
} |
276 |
#endif
|
277 |
} |
278 |
|
279 |
void qemu_aio_poll(void) |
280 |
{ |
281 |
RawAIOCB *acb, **pacb; |
282 |
int ret;
|
283 |
|
284 |
for(;;) {
|
285 |
pacb = &first_aio; |
286 |
for(;;) {
|
287 |
acb = *pacb; |
288 |
if (!acb)
|
289 |
goto the_end;
|
290 |
ret = aio_error(&acb->aiocb); |
291 |
if (ret == ECANCELED) {
|
292 |
/* remove the request */
|
293 |
*pacb = acb->next; |
294 |
qemu_aio_release(acb); |
295 |
} else if (ret != EINPROGRESS) { |
296 |
/* end of aio */
|
297 |
if (ret == 0) { |
298 |
ret = aio_return(&acb->aiocb); |
299 |
if (ret == acb->aiocb.aio_nbytes)
|
300 |
ret = 0;
|
301 |
else
|
302 |
ret = -EINVAL; |
303 |
} else {
|
304 |
ret = -ret; |
305 |
} |
306 |
/* remove the request */
|
307 |
*pacb = acb->next; |
308 |
/* call the callback */
|
309 |
acb->common.cb(acb->common.opaque, ret); |
310 |
qemu_aio_release(acb); |
311 |
break;
|
312 |
} else {
|
313 |
pacb = &acb->next; |
314 |
} |
315 |
} |
316 |
} |
317 |
the_end: ;
|
318 |
} |
319 |
|
320 |
/* Wait for all IO requests to complete. */
|
321 |
void qemu_aio_flush(void) |
322 |
{ |
323 |
qemu_aio_wait_start(); |
324 |
qemu_aio_poll(); |
325 |
while (first_aio) {
|
326 |
qemu_aio_wait(); |
327 |
} |
328 |
qemu_aio_wait_end(); |
329 |
} |
330 |
|
331 |
/* wait until at least one AIO was handled */
|
332 |
static sigset_t wait_oset;
|
333 |
|
334 |
void qemu_aio_wait_start(void) |
335 |
{ |
336 |
sigset_t set; |
337 |
|
338 |
if (!aio_initialized)
|
339 |
qemu_aio_init(); |
340 |
sigemptyset(&set); |
341 |
sigaddset(&set, aio_sig_num); |
342 |
sigprocmask(SIG_BLOCK, &set, &wait_oset); |
343 |
} |
344 |
|
345 |
void qemu_aio_wait(void) |
346 |
{ |
347 |
sigset_t set; |
348 |
int nb_sigs;
|
349 |
|
350 |
#ifndef QEMU_TOOL
|
351 |
if (qemu_bh_poll())
|
352 |
return;
|
353 |
#endif
|
354 |
sigemptyset(&set); |
355 |
sigaddset(&set, aio_sig_num); |
356 |
sigwait(&set, &nb_sigs); |
357 |
qemu_aio_poll(); |
358 |
} |
359 |
|
360 |
void qemu_aio_wait_end(void) |
361 |
{ |
362 |
sigprocmask(SIG_SETMASK, &wait_oset, NULL);
|
363 |
} |
364 |
|
365 |
static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
|
366 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
367 |
BlockDriverCompletionFunc *cb, void *opaque)
|
368 |
{ |
369 |
BDRVRawState *s = bs->opaque; |
370 |
RawAIOCB *acb; |
371 |
|
372 |
if (fd_open(bs) < 0) |
373 |
return NULL; |
374 |
|
375 |
acb = qemu_aio_get(bs, cb, opaque); |
376 |
if (!acb)
|
377 |
return NULL; |
378 |
acb->aiocb.aio_fildes = s->fd; |
379 |
acb->aiocb.aio_sigevent.sigev_signo = aio_sig_num; |
380 |
acb->aiocb.aio_sigevent.sigev_notify = SIGEV_SIGNAL; |
381 |
acb->aiocb.aio_buf = buf; |
382 |
acb->aiocb.aio_nbytes = nb_sectors * 512;
|
383 |
acb->aiocb.aio_offset = sector_num * 512;
|
384 |
acb->next = first_aio; |
385 |
first_aio = acb; |
386 |
return acb;
|
387 |
} |
388 |
|
389 |
static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
|
390 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
391 |
BlockDriverCompletionFunc *cb, void *opaque)
|
392 |
{ |
393 |
RawAIOCB *acb; |
394 |
|
395 |
acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
396 |
if (!acb)
|
397 |
return NULL; |
398 |
if (aio_read(&acb->aiocb) < 0) { |
399 |
qemu_aio_release(acb); |
400 |
return NULL; |
401 |
} |
402 |
return &acb->common;
|
403 |
} |
404 |
|
405 |
static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
|
406 |
int64_t sector_num, const uint8_t *buf, int nb_sectors, |
407 |
BlockDriverCompletionFunc *cb, void *opaque)
|
408 |
{ |
409 |
RawAIOCB *acb; |
410 |
|
411 |
acb = raw_aio_setup(bs, sector_num, (uint8_t*)buf, nb_sectors, cb, opaque); |
412 |
if (!acb)
|
413 |
return NULL; |
414 |
if (aio_write(&acb->aiocb) < 0) { |
415 |
qemu_aio_release(acb); |
416 |
return NULL; |
417 |
} |
418 |
return &acb->common;
|
419 |
} |
420 |
|
421 |
static void raw_aio_cancel(BlockDriverAIOCB *blockacb) |
422 |
{ |
423 |
int ret;
|
424 |
RawAIOCB *acb = (RawAIOCB *)blockacb; |
425 |
RawAIOCB **pacb; |
426 |
|
427 |
ret = aio_cancel(acb->aiocb.aio_fildes, &acb->aiocb); |
428 |
if (ret == AIO_NOTCANCELED) {
|
429 |
/* fail safe: if the aio could not be canceled, we wait for
|
430 |
it */
|
431 |
while (aio_error(&acb->aiocb) == EINPROGRESS);
|
432 |
} |
433 |
|
434 |
/* remove the callback from the queue */
|
435 |
pacb = &first_aio; |
436 |
for(;;) {
|
437 |
if (*pacb == NULL) { |
438 |
break;
|
439 |
} else if (*pacb == acb) { |
440 |
*pacb = acb->next; |
441 |
qemu_aio_release(acb); |
442 |
break;
|
443 |
} |
444 |
pacb = &acb->next; |
445 |
} |
446 |
} |
447 |
|
448 |
static void raw_close(BlockDriverState *bs) |
449 |
{ |
450 |
BDRVRawState *s = bs->opaque; |
451 |
if (s->fd >= 0) { |
452 |
close(s->fd); |
453 |
s->fd = -1;
|
454 |
} |
455 |
} |
456 |
|
457 |
static int raw_truncate(BlockDriverState *bs, int64_t offset) |
458 |
{ |
459 |
BDRVRawState *s = bs->opaque; |
460 |
if (s->type != FTYPE_FILE)
|
461 |
return -ENOTSUP;
|
462 |
if (ftruncate(s->fd, offset) < 0) |
463 |
return -errno;
|
464 |
return 0; |
465 |
} |
466 |
|
467 |
static int64_t raw_getlength(BlockDriverState *bs)
|
468 |
{ |
469 |
BDRVRawState *s = bs->opaque; |
470 |
int fd = s->fd;
|
471 |
int64_t size; |
472 |
#ifdef _BSD
|
473 |
struct stat sb;
|
474 |
#endif
|
475 |
#ifdef __sun__
|
476 |
struct dk_minfo minfo;
|
477 |
int rv;
|
478 |
#endif
|
479 |
int ret;
|
480 |
|
481 |
ret = fd_open(bs); |
482 |
if (ret < 0) |
483 |
return ret;
|
484 |
|
485 |
#ifdef _BSD
|
486 |
if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
|
487 |
#ifdef DIOCGMEDIASIZE
|
488 |
if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
|
489 |
#endif
|
490 |
#ifdef CONFIG_COCOA
|
491 |
size = LONG_LONG_MAX; |
492 |
#else
|
493 |
size = lseek(fd, 0LL, SEEK_END);
|
494 |
#endif
|
495 |
} else
|
496 |
#endif
|
497 |
#ifdef __sun__
|
498 |
/*
|
499 |
* use the DKIOCGMEDIAINFO ioctl to read the size.
|
500 |
*/
|
501 |
rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo ); |
502 |
if ( rv != -1 ) { |
503 |
size = minfo.dki_lbsize * minfo.dki_capacity; |
504 |
} else /* there are reports that lseek on some devices |
505 |
fails, but irc discussion said that contingency
|
506 |
on contingency was overkill */
|
507 |
#endif
|
508 |
{ |
509 |
size = lseek(fd, 0, SEEK_END);
|
510 |
} |
511 |
return size;
|
512 |
} |
513 |
|
514 |
static int raw_create(const char *filename, int64_t total_size, |
515 |
const char *backing_file, int flags) |
516 |
{ |
517 |
int fd;
|
518 |
|
519 |
if (flags || backing_file)
|
520 |
return -ENOTSUP;
|
521 |
|
522 |
fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
523 |
0644);
|
524 |
if (fd < 0) |
525 |
return -EIO;
|
526 |
ftruncate(fd, total_size * 512);
|
527 |
close(fd); |
528 |
return 0; |
529 |
} |
530 |
|
531 |
static void raw_flush(BlockDriverState *bs) |
532 |
{ |
533 |
BDRVRawState *s = bs->opaque; |
534 |
fsync(s->fd); |
535 |
} |
536 |
|
537 |
BlockDriver bdrv_raw = { |
538 |
"raw",
|
539 |
sizeof(BDRVRawState),
|
540 |
NULL, /* no probe for protocols */ |
541 |
raw_open, |
542 |
NULL,
|
543 |
NULL,
|
544 |
raw_close, |
545 |
raw_create, |
546 |
raw_flush, |
547 |
|
548 |
.bdrv_aio_read = raw_aio_read, |
549 |
.bdrv_aio_write = raw_aio_write, |
550 |
.bdrv_aio_cancel = raw_aio_cancel, |
551 |
.aiocb_size = sizeof(RawAIOCB),
|
552 |
.protocol_name = "file",
|
553 |
.bdrv_pread = raw_pread, |
554 |
.bdrv_pwrite = raw_pwrite, |
555 |
.bdrv_truncate = raw_truncate, |
556 |
.bdrv_getlength = raw_getlength, |
557 |
}; |
558 |
|
559 |
/***********************************************/
|
560 |
/* host device */
|
561 |
|
562 |
#ifdef CONFIG_COCOA
|
563 |
static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator );
|
564 |
static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ); |
565 |
|
566 |
kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ) |
567 |
{ |
568 |
kern_return_t kernResult; |
569 |
mach_port_t masterPort; |
570 |
CFMutableDictionaryRef classesToMatch; |
571 |
|
572 |
kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort ); |
573 |
if ( KERN_SUCCESS != kernResult ) {
|
574 |
printf( "IOMasterPort returned %d\n", kernResult );
|
575 |
} |
576 |
|
577 |
classesToMatch = IOServiceMatching( kIOCDMediaClass ); |
578 |
if ( classesToMatch == NULL ) { |
579 |
printf( "IOServiceMatching returned a NULL dictionary.\n" );
|
580 |
} else {
|
581 |
CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue ); |
582 |
} |
583 |
kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator ); |
584 |
if ( KERN_SUCCESS != kernResult )
|
585 |
{ |
586 |
printf( "IOServiceGetMatchingServices returned %d\n", kernResult );
|
587 |
} |
588 |
|
589 |
return kernResult;
|
590 |
} |
591 |
|
592 |
kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize )
|
593 |
{ |
594 |
io_object_t nextMedia; |
595 |
kern_return_t kernResult = KERN_FAILURE; |
596 |
*bsdPath = '\0';
|
597 |
nextMedia = IOIteratorNext( mediaIterator ); |
598 |
if ( nextMedia )
|
599 |
{ |
600 |
CFTypeRef bsdPathAsCFString; |
601 |
bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 );
|
602 |
if ( bsdPathAsCFString ) {
|
603 |
size_t devPathLength; |
604 |
strcpy( bsdPath, _PATH_DEV ); |
605 |
strcat( bsdPath, "r" );
|
606 |
devPathLength = strlen( bsdPath ); |
607 |
if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) {
|
608 |
kernResult = KERN_SUCCESS; |
609 |
} |
610 |
CFRelease( bsdPathAsCFString ); |
611 |
} |
612 |
IOObjectRelease( nextMedia ); |
613 |
} |
614 |
|
615 |
return kernResult;
|
616 |
} |
617 |
|
618 |
#endif
|
619 |
|
620 |
static int hdev_open(BlockDriverState *bs, const char *filename, int flags) |
621 |
{ |
622 |
BDRVRawState *s = bs->opaque; |
623 |
int fd, open_flags, ret;
|
624 |
|
625 |
#ifdef CONFIG_COCOA
|
626 |
if (strstart(filename, "/dev/cdrom", NULL)) { |
627 |
kern_return_t kernResult; |
628 |
io_iterator_t mediaIterator; |
629 |
char bsdPath[ MAXPATHLEN ];
|
630 |
int fd;
|
631 |
|
632 |
kernResult = FindEjectableCDMedia( &mediaIterator ); |
633 |
kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) );
|
634 |
|
635 |
if ( bsdPath[ 0 ] != '\0' ) { |
636 |
strcat(bsdPath,"s0");
|
637 |
/* some CDs don't have a partition 0 */
|
638 |
fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE); |
639 |
if (fd < 0) { |
640 |
bsdPath[strlen(bsdPath)-1] = '1'; |
641 |
} else {
|
642 |
close(fd); |
643 |
} |
644 |
filename = bsdPath; |
645 |
} |
646 |
|
647 |
if ( mediaIterator )
|
648 |
IOObjectRelease( mediaIterator ); |
649 |
} |
650 |
#endif
|
651 |
open_flags = O_BINARY; |
652 |
if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
653 |
open_flags |= O_RDWR; |
654 |
} else {
|
655 |
open_flags |= O_RDONLY; |
656 |
bs->read_only = 1;
|
657 |
} |
658 |
|
659 |
s->type = FTYPE_FILE; |
660 |
#if defined(__linux__)
|
661 |
if (strstart(filename, "/dev/cd", NULL)) { |
662 |
/* open will not fail even if no CD is inserted */
|
663 |
open_flags |= O_NONBLOCK; |
664 |
s->type = FTYPE_CD; |
665 |
} else if (strstart(filename, "/dev/fd", NULL)) { |
666 |
s->type = FTYPE_FD; |
667 |
s->fd_open_flags = open_flags; |
668 |
/* open will not fail even if no floppy is inserted */
|
669 |
open_flags |= O_NONBLOCK; |
670 |
} |
671 |
#endif
|
672 |
fd = open(filename, open_flags, 0644);
|
673 |
if (fd < 0) { |
674 |
ret = -errno; |
675 |
if (ret == -EROFS)
|
676 |
ret = -EACCES; |
677 |
return ret;
|
678 |
} |
679 |
s->fd = fd; |
680 |
#if defined(__linux__)
|
681 |
/* close fd so that we can reopen it as needed */
|
682 |
if (s->type == FTYPE_FD) {
|
683 |
close(s->fd); |
684 |
s->fd = -1;
|
685 |
s->fd_media_changed = 1;
|
686 |
} |
687 |
#endif
|
688 |
return 0; |
689 |
} |
690 |
|
691 |
#if defined(__linux__) && !defined(QEMU_TOOL)
|
692 |
|
693 |
/* Note: we do not have a reliable method to detect if the floppy is
|
694 |
present. The current method is to try to open the floppy at every
|
695 |
I/O and to keep it opened during a few hundreds of ms. */
|
696 |
static int fd_open(BlockDriverState *bs) |
697 |
{ |
698 |
BDRVRawState *s = bs->opaque; |
699 |
int last_media_present;
|
700 |
|
701 |
if (s->type != FTYPE_FD)
|
702 |
return 0; |
703 |
last_media_present = (s->fd >= 0);
|
704 |
if (s->fd >= 0 && |
705 |
(qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) { |
706 |
close(s->fd); |
707 |
s->fd = -1;
|
708 |
#ifdef DEBUG_FLOPPY
|
709 |
printf("Floppy closed\n");
|
710 |
#endif
|
711 |
} |
712 |
if (s->fd < 0) { |
713 |
if (s->fd_got_error &&
|
714 |
(qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) { |
715 |
#ifdef DEBUG_FLOPPY
|
716 |
printf("No floppy (open delayed)\n");
|
717 |
#endif
|
718 |
return -EIO;
|
719 |
} |
720 |
s->fd = open(bs->filename, s->fd_open_flags); |
721 |
if (s->fd < 0) { |
722 |
s->fd_error_time = qemu_get_clock(rt_clock); |
723 |
s->fd_got_error = 1;
|
724 |
if (last_media_present)
|
725 |
s->fd_media_changed = 1;
|
726 |
#ifdef DEBUG_FLOPPY
|
727 |
printf("No floppy\n");
|
728 |
#endif
|
729 |
return -EIO;
|
730 |
} |
731 |
#ifdef DEBUG_FLOPPY
|
732 |
printf("Floppy opened\n");
|
733 |
#endif
|
734 |
} |
735 |
if (!last_media_present)
|
736 |
s->fd_media_changed = 1;
|
737 |
s->fd_open_time = qemu_get_clock(rt_clock); |
738 |
s->fd_got_error = 0;
|
739 |
return 0; |
740 |
} |
741 |
#else
|
742 |
static int fd_open(BlockDriverState *bs) |
743 |
{ |
744 |
return 0; |
745 |
} |
746 |
#endif
|
747 |
|
748 |
#if defined(__linux__)
|
749 |
|
750 |
static int raw_is_inserted(BlockDriverState *bs) |
751 |
{ |
752 |
BDRVRawState *s = bs->opaque; |
753 |
int ret;
|
754 |
|
755 |
switch(s->type) {
|
756 |
case FTYPE_CD:
|
757 |
ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); |
758 |
if (ret == CDS_DISC_OK)
|
759 |
return 1; |
760 |
else
|
761 |
return 0; |
762 |
break;
|
763 |
case FTYPE_FD:
|
764 |
ret = fd_open(bs); |
765 |
return (ret >= 0); |
766 |
default:
|
767 |
return 1; |
768 |
} |
769 |
} |
770 |
|
771 |
/* currently only used by fdc.c, but a CD version would be good too */
|
772 |
static int raw_media_changed(BlockDriverState *bs) |
773 |
{ |
774 |
BDRVRawState *s = bs->opaque; |
775 |
|
776 |
switch(s->type) {
|
777 |
case FTYPE_FD:
|
778 |
{ |
779 |
int ret;
|
780 |
/* XXX: we do not have a true media changed indication. It
|
781 |
does not work if the floppy is changed without trying
|
782 |
to read it */
|
783 |
fd_open(bs); |
784 |
ret = s->fd_media_changed; |
785 |
s->fd_media_changed = 0;
|
786 |
#ifdef DEBUG_FLOPPY
|
787 |
printf("Floppy changed=%d\n", ret);
|
788 |
#endif
|
789 |
return ret;
|
790 |
} |
791 |
default:
|
792 |
return -ENOTSUP;
|
793 |
} |
794 |
} |
795 |
|
796 |
static int raw_eject(BlockDriverState *bs, int eject_flag) |
797 |
{ |
798 |
BDRVRawState *s = bs->opaque; |
799 |
|
800 |
switch(s->type) {
|
801 |
case FTYPE_CD:
|
802 |
if (eject_flag) {
|
803 |
if (ioctl (s->fd, CDROMEJECT, NULL) < 0) |
804 |
perror("CDROMEJECT");
|
805 |
} else {
|
806 |
if (ioctl (s->fd, CDROMCLOSETRAY, NULL) < 0) |
807 |
perror("CDROMEJECT");
|
808 |
} |
809 |
break;
|
810 |
case FTYPE_FD:
|
811 |
{ |
812 |
int fd;
|
813 |
if (s->fd >= 0) { |
814 |
close(s->fd); |
815 |
s->fd = -1;
|
816 |
} |
817 |
fd = open(bs->filename, s->fd_open_flags | O_NONBLOCK); |
818 |
if (fd >= 0) { |
819 |
if (ioctl(fd, FDEJECT, 0) < 0) |
820 |
perror("FDEJECT");
|
821 |
close(fd); |
822 |
} |
823 |
} |
824 |
break;
|
825 |
default:
|
826 |
return -ENOTSUP;
|
827 |
} |
828 |
return 0; |
829 |
} |
830 |
|
831 |
static int raw_set_locked(BlockDriverState *bs, int locked) |
832 |
{ |
833 |
BDRVRawState *s = bs->opaque; |
834 |
|
835 |
switch(s->type) {
|
836 |
case FTYPE_CD:
|
837 |
if (ioctl (s->fd, CDROM_LOCKDOOR, locked) < 0) { |
838 |
/* Note: an error can happen if the distribution automatically
|
839 |
mounts the CD-ROM */
|
840 |
// perror("CDROM_LOCKDOOR");
|
841 |
} |
842 |
break;
|
843 |
default:
|
844 |
return -ENOTSUP;
|
845 |
} |
846 |
return 0; |
847 |
} |
848 |
|
849 |
#else
|
850 |
|
851 |
static int raw_is_inserted(BlockDriverState *bs) |
852 |
{ |
853 |
return 1; |
854 |
} |
855 |
|
856 |
static int raw_media_changed(BlockDriverState *bs) |
857 |
{ |
858 |
return -ENOTSUP;
|
859 |
} |
860 |
|
861 |
static int raw_eject(BlockDriverState *bs, int eject_flag) |
862 |
{ |
863 |
return -ENOTSUP;
|
864 |
} |
865 |
|
866 |
static int raw_set_locked(BlockDriverState *bs, int locked) |
867 |
{ |
868 |
return -ENOTSUP;
|
869 |
} |
870 |
|
871 |
#endif /* !linux */ |
872 |
|
873 |
BlockDriver bdrv_host_device = { |
874 |
"host_device",
|
875 |
sizeof(BDRVRawState),
|
876 |
NULL, /* no probe for protocols */ |
877 |
hdev_open, |
878 |
NULL,
|
879 |
NULL,
|
880 |
raw_close, |
881 |
NULL,
|
882 |
raw_flush, |
883 |
|
884 |
.bdrv_aio_read = raw_aio_read, |
885 |
.bdrv_aio_write = raw_aio_write, |
886 |
.bdrv_aio_cancel = raw_aio_cancel, |
887 |
.aiocb_size = sizeof(RawAIOCB),
|
888 |
.bdrv_pread = raw_pread, |
889 |
.bdrv_pwrite = raw_pwrite, |
890 |
.bdrv_getlength = raw_getlength, |
891 |
|
892 |
/* removable device support */
|
893 |
.bdrv_is_inserted = raw_is_inserted, |
894 |
.bdrv_media_changed = raw_media_changed, |
895 |
.bdrv_eject = raw_eject, |
896 |
.bdrv_set_locked = raw_set_locked, |
897 |
}; |
898 |
|
899 |
#else /* _WIN32 */ |
900 |
|
901 |
/* XXX: use another file ? */
|
902 |
#include <winioctl.h> |
903 |
|
904 |
#define FTYPE_FILE 0 |
905 |
#define FTYPE_CD 1 |
906 |
#define FTYPE_HARDDISK 2 |
907 |
|
908 |
typedef struct BDRVRawState { |
909 |
HANDLE hfile; |
910 |
int type;
|
911 |
char drive_path[16]; /* format: "d:\" */ |
912 |
} BDRVRawState; |
913 |
|
914 |
typedef struct RawAIOCB { |
915 |
BlockDriverAIOCB common; |
916 |
HANDLE hEvent; |
917 |
OVERLAPPED ov; |
918 |
int count;
|
919 |
} RawAIOCB; |
920 |
|
921 |
int qemu_ftruncate64(int fd, int64_t length) |
922 |
{ |
923 |
LARGE_INTEGER li; |
924 |
LONG high; |
925 |
HANDLE h; |
926 |
BOOL res; |
927 |
|
928 |
if ((GetVersion() & 0x80000000UL) && (length >> 32) != 0) |
929 |
return -1; |
930 |
|
931 |
h = (HANDLE)_get_osfhandle(fd); |
932 |
|
933 |
/* get current position, ftruncate do not change position */
|
934 |
li.HighPart = 0;
|
935 |
li.LowPart = SetFilePointer (h, 0, &li.HighPart, FILE_CURRENT);
|
936 |
if (li.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR) |
937 |
return -1; |
938 |
|
939 |
high = length >> 32;
|
940 |
if (!SetFilePointer(h, (DWORD) length, &high, FILE_BEGIN))
|
941 |
return -1; |
942 |
res = SetEndOfFile(h); |
943 |
|
944 |
/* back to old position */
|
945 |
SetFilePointer(h, li.LowPart, &li.HighPart, FILE_BEGIN); |
946 |
return res ? 0 : -1; |
947 |
} |
948 |
|
949 |
static int set_sparse(int fd) |
950 |
{ |
951 |
DWORD returned; |
952 |
return (int) DeviceIoControl((HANDLE)_get_osfhandle(fd), FSCTL_SET_SPARSE, |
953 |
NULL, 0, NULL, 0, &returned, NULL); |
954 |
} |
955 |
|
956 |
static int raw_open(BlockDriverState *bs, const char *filename, int flags) |
957 |
{ |
958 |
BDRVRawState *s = bs->opaque; |
959 |
int access_flags, create_flags;
|
960 |
DWORD overlapped; |
961 |
|
962 |
s->type = FTYPE_FILE; |
963 |
|
964 |
if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
965 |
access_flags = GENERIC_READ | GENERIC_WRITE; |
966 |
} else {
|
967 |
access_flags = GENERIC_READ; |
968 |
} |
969 |
if (flags & BDRV_O_CREAT) {
|
970 |
create_flags = CREATE_ALWAYS; |
971 |
} else {
|
972 |
create_flags = OPEN_EXISTING; |
973 |
} |
974 |
#ifdef QEMU_TOOL
|
975 |
overlapped = FILE_ATTRIBUTE_NORMAL; |
976 |
#else
|
977 |
overlapped = FILE_FLAG_OVERLAPPED; |
978 |
#endif
|
979 |
s->hfile = CreateFile(filename, access_flags, |
980 |
FILE_SHARE_READ, NULL,
|
981 |
create_flags, overlapped, NULL);
|
982 |
if (s->hfile == INVALID_HANDLE_VALUE) {
|
983 |
int err = GetLastError();
|
984 |
|
985 |
if (err == ERROR_ACCESS_DENIED)
|
986 |
return -EACCES;
|
987 |
return -1; |
988 |
} |
989 |
return 0; |
990 |
} |
991 |
|
992 |
static int raw_pread(BlockDriverState *bs, int64_t offset, |
993 |
uint8_t *buf, int count)
|
994 |
{ |
995 |
BDRVRawState *s = bs->opaque; |
996 |
OVERLAPPED ov; |
997 |
DWORD ret_count; |
998 |
int ret;
|
999 |
|
1000 |
memset(&ov, 0, sizeof(ov)); |
1001 |
ov.Offset = offset; |
1002 |
ov.OffsetHigh = offset >> 32;
|
1003 |
ret = ReadFile(s->hfile, buf, count, &ret_count, &ov); |
1004 |
if (!ret) {
|
1005 |
ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE); |
1006 |
if (!ret)
|
1007 |
return -EIO;
|
1008 |
else
|
1009 |
return ret_count;
|
1010 |
} |
1011 |
return ret_count;
|
1012 |
} |
1013 |
|
1014 |
static int raw_pwrite(BlockDriverState *bs, int64_t offset, |
1015 |
const uint8_t *buf, int count) |
1016 |
{ |
1017 |
BDRVRawState *s = bs->opaque; |
1018 |
OVERLAPPED ov; |
1019 |
DWORD ret_count; |
1020 |
int ret;
|
1021 |
|
1022 |
memset(&ov, 0, sizeof(ov)); |
1023 |
ov.Offset = offset; |
1024 |
ov.OffsetHigh = offset >> 32;
|
1025 |
ret = WriteFile(s->hfile, buf, count, &ret_count, &ov); |
1026 |
if (!ret) {
|
1027 |
ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE); |
1028 |
if (!ret)
|
1029 |
return -EIO;
|
1030 |
else
|
1031 |
return ret_count;
|
1032 |
} |
1033 |
return ret_count;
|
1034 |
} |
1035 |
|
1036 |
#if 0
|
1037 |
#ifndef QEMU_TOOL
|
1038 |
static void raw_aio_cb(void *opaque)
|
1039 |
{
|
1040 |
RawAIOCB *acb = opaque;
|
1041 |
BlockDriverState *bs = acb->common.bs;
|
1042 |
BDRVRawState *s = bs->opaque;
|
1043 |
DWORD ret_count;
|
1044 |
int ret;
|
1045 |
|
1046 |
ret = GetOverlappedResult(s->hfile, &acb->ov, &ret_count, TRUE);
|
1047 |
if (!ret || ret_count != acb->count) {
|
1048 |
acb->common.cb(acb->common.opaque, -EIO);
|
1049 |
} else {
|
1050 |
acb->common.cb(acb->common.opaque, 0);
|
1051 |
}
|
1052 |
}
|
1053 |
#endif
|
1054 |
|
1055 |
static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
|
1056 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
1057 |
BlockDriverCompletionFunc *cb, void *opaque)
|
1058 |
{ |
1059 |
RawAIOCB *acb; |
1060 |
int64_t offset; |
1061 |
|
1062 |
acb = qemu_aio_get(bs, cb, opaque); |
1063 |
if (acb->hEvent) {
|
1064 |
acb->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); |
1065 |
if (!acb->hEvent) {
|
1066 |
qemu_aio_release(acb); |
1067 |
return NULL; |
1068 |
} |
1069 |
} |
1070 |
memset(&acb->ov, 0, sizeof(acb->ov)); |
1071 |
offset = sector_num * 512;
|
1072 |
acb->ov.Offset = offset; |
1073 |
acb->ov.OffsetHigh = offset >> 32;
|
1074 |
acb->ov.hEvent = acb->hEvent; |
1075 |
acb->count = nb_sectors * 512;
|
1076 |
#ifndef QEMU_TOOL
|
1077 |
qemu_add_wait_object(acb->ov.hEvent, raw_aio_cb, acb); |
1078 |
#endif
|
1079 |
return acb;
|
1080 |
} |
1081 |
|
1082 |
static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
|
1083 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
1084 |
BlockDriverCompletionFunc *cb, void *opaque)
|
1085 |
{ |
1086 |
BDRVRawState *s = bs->opaque; |
1087 |
RawAIOCB *acb; |
1088 |
int ret;
|
1089 |
|
1090 |
acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
1091 |
if (!acb)
|
1092 |
return NULL; |
1093 |
ret = ReadFile(s->hfile, buf, acb->count, NULL, &acb->ov);
|
1094 |
if (!ret) {
|
1095 |
qemu_aio_release(acb); |
1096 |
return NULL; |
1097 |
} |
1098 |
#ifdef QEMU_TOOL
|
1099 |
qemu_aio_release(acb); |
1100 |
#endif
|
1101 |
return (BlockDriverAIOCB *)acb;
|
1102 |
} |
1103 |
|
1104 |
static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
|
1105 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
1106 |
BlockDriverCompletionFunc *cb, void *opaque)
|
1107 |
{ |
1108 |
BDRVRawState *s = bs->opaque; |
1109 |
RawAIOCB *acb; |
1110 |
int ret;
|
1111 |
|
1112 |
acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
1113 |
if (!acb)
|
1114 |
return NULL; |
1115 |
ret = WriteFile(s->hfile, buf, acb->count, NULL, &acb->ov);
|
1116 |
if (!ret) {
|
1117 |
qemu_aio_release(acb); |
1118 |
return NULL; |
1119 |
} |
1120 |
#ifdef QEMU_TOOL
|
1121 |
qemu_aio_release(acb); |
1122 |
#endif
|
1123 |
return (BlockDriverAIOCB *)acb;
|
1124 |
} |
1125 |
|
1126 |
static void raw_aio_cancel(BlockDriverAIOCB *blockacb) |
1127 |
{ |
1128 |
#ifndef QEMU_TOOL
|
1129 |
RawAIOCB *acb = (RawAIOCB *)blockacb; |
1130 |
BlockDriverState *bs = acb->common.bs; |
1131 |
BDRVRawState *s = bs->opaque; |
1132 |
|
1133 |
qemu_del_wait_object(acb->ov.hEvent, raw_aio_cb, acb); |
1134 |
/* XXX: if more than one async I/O it is not correct */
|
1135 |
CancelIo(s->hfile); |
1136 |
qemu_aio_release(acb); |
1137 |
#endif
|
1138 |
} |
1139 |
#endif /* #if 0 */ |
1140 |
|
1141 |
static void raw_flush(BlockDriverState *bs) |
1142 |
{ |
1143 |
BDRVRawState *s = bs->opaque; |
1144 |
FlushFileBuffers(s->hfile); |
1145 |
} |
1146 |
|
1147 |
static void raw_close(BlockDriverState *bs) |
1148 |
{ |
1149 |
BDRVRawState *s = bs->opaque; |
1150 |
CloseHandle(s->hfile); |
1151 |
} |
1152 |
|
1153 |
static int raw_truncate(BlockDriverState *bs, int64_t offset) |
1154 |
{ |
1155 |
BDRVRawState *s = bs->opaque; |
1156 |
DWORD low, high; |
1157 |
|
1158 |
low = offset; |
1159 |
high = offset >> 32;
|
1160 |
if (!SetFilePointer(s->hfile, low, &high, FILE_BEGIN))
|
1161 |
return -EIO;
|
1162 |
if (!SetEndOfFile(s->hfile))
|
1163 |
return -EIO;
|
1164 |
return 0; |
1165 |
} |
1166 |
|
1167 |
static int64_t raw_getlength(BlockDriverState *bs)
|
1168 |
{ |
1169 |
BDRVRawState *s = bs->opaque; |
1170 |
LARGE_INTEGER l; |
1171 |
ULARGE_INTEGER available, total, total_free; |
1172 |
DISK_GEOMETRY dg; |
1173 |
DWORD count; |
1174 |
BOOL status; |
1175 |
|
1176 |
switch(s->type) {
|
1177 |
case FTYPE_FILE:
|
1178 |
l.LowPart = GetFileSize(s->hfile, &l.HighPart); |
1179 |
if (l.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR) |
1180 |
return -EIO;
|
1181 |
break;
|
1182 |
case FTYPE_CD:
|
1183 |
if (!GetDiskFreeSpaceEx(s->drive_path, &available, &total, &total_free))
|
1184 |
return -EIO;
|
1185 |
l.QuadPart = total.QuadPart; |
1186 |
break;
|
1187 |
case FTYPE_HARDDISK:
|
1188 |
status = DeviceIoControl(s->hfile, IOCTL_DISK_GET_DRIVE_GEOMETRY, |
1189 |
NULL, 0, &dg, sizeof(dg), &count, NULL); |
1190 |
if (status != FALSE) {
|
1191 |
l.QuadPart = dg.Cylinders.QuadPart * dg.TracksPerCylinder |
1192 |
* dg.SectorsPerTrack * dg.BytesPerSector; |
1193 |
} |
1194 |
break;
|
1195 |
default:
|
1196 |
return -EIO;
|
1197 |
} |
1198 |
return l.QuadPart;
|
1199 |
} |
1200 |
|
1201 |
static int raw_create(const char *filename, int64_t total_size, |
1202 |
const char *backing_file, int flags) |
1203 |
{ |
1204 |
int fd;
|
1205 |
|
1206 |
if (flags || backing_file)
|
1207 |
return -ENOTSUP;
|
1208 |
|
1209 |
fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
1210 |
0644);
|
1211 |
if (fd < 0) |
1212 |
return -EIO;
|
1213 |
set_sparse(fd); |
1214 |
ftruncate(fd, total_size * 512);
|
1215 |
close(fd); |
1216 |
return 0; |
1217 |
} |
1218 |
|
1219 |
void qemu_aio_init(void) |
1220 |
{ |
1221 |
} |
1222 |
|
1223 |
void qemu_aio_poll(void) |
1224 |
{ |
1225 |
} |
1226 |
|
1227 |
void qemu_aio_flush(void) |
1228 |
{ |
1229 |
} |
1230 |
|
1231 |
void qemu_aio_wait_start(void) |
1232 |
{ |
1233 |
} |
1234 |
|
1235 |
void qemu_aio_wait(void) |
1236 |
{ |
1237 |
#ifndef QEMU_TOOL
|
1238 |
qemu_bh_poll(); |
1239 |
#endif
|
1240 |
} |
1241 |
|
1242 |
void qemu_aio_wait_end(void) |
1243 |
{ |
1244 |
} |
1245 |
|
1246 |
BlockDriver bdrv_raw = { |
1247 |
"raw",
|
1248 |
sizeof(BDRVRawState),
|
1249 |
NULL, /* no probe for protocols */ |
1250 |
raw_open, |
1251 |
NULL,
|
1252 |
NULL,
|
1253 |
raw_close, |
1254 |
raw_create, |
1255 |
raw_flush, |
1256 |
|
1257 |
#if 0
|
1258 |
.bdrv_aio_read = raw_aio_read,
|
1259 |
.bdrv_aio_write = raw_aio_write,
|
1260 |
.bdrv_aio_cancel = raw_aio_cancel,
|
1261 |
.aiocb_size = sizeof(RawAIOCB);
|
1262 |
#endif
|
1263 |
.protocol_name = "file",
|
1264 |
.bdrv_pread = raw_pread, |
1265 |
.bdrv_pwrite = raw_pwrite, |
1266 |
.bdrv_truncate = raw_truncate, |
1267 |
.bdrv_getlength = raw_getlength, |
1268 |
}; |
1269 |
|
1270 |
/***********************************************/
|
1271 |
/* host device */
|
1272 |
|
1273 |
static int find_cdrom(char *cdrom_name, int cdrom_name_size) |
1274 |
{ |
1275 |
char drives[256], *pdrv = drives; |
1276 |
UINT type; |
1277 |
|
1278 |
memset(drives, 0, sizeof(drives)); |
1279 |
GetLogicalDriveStrings(sizeof(drives), drives);
|
1280 |
while(pdrv[0] != '\0') { |
1281 |
type = GetDriveType(pdrv); |
1282 |
switch(type) {
|
1283 |
case DRIVE_CDROM:
|
1284 |
snprintf(cdrom_name, cdrom_name_size, "\\\\.\\%c:", pdrv[0]); |
1285 |
return 0; |
1286 |
break;
|
1287 |
} |
1288 |
pdrv += lstrlen(pdrv) + 1;
|
1289 |
} |
1290 |
return -1; |
1291 |
} |
1292 |
|
1293 |
static int find_device_type(BlockDriverState *bs, const char *filename) |
1294 |
{ |
1295 |
BDRVRawState *s = bs->opaque; |
1296 |
UINT type; |
1297 |
const char *p; |
1298 |
|
1299 |
if (strstart(filename, "\\\\.\\", &p) || |
1300 |
strstart(filename, "//./", &p)) {
|
1301 |
if (stristart(p, "PhysicalDrive", NULL)) |
1302 |
return FTYPE_HARDDISK;
|
1303 |
snprintf(s->drive_path, sizeof(s->drive_path), "%c:\\", p[0]); |
1304 |
type = GetDriveType(s->drive_path); |
1305 |
if (type == DRIVE_CDROM)
|
1306 |
return FTYPE_CD;
|
1307 |
else
|
1308 |
return FTYPE_FILE;
|
1309 |
} else {
|
1310 |
return FTYPE_FILE;
|
1311 |
} |
1312 |
} |
1313 |
|
1314 |
static int hdev_open(BlockDriverState *bs, const char *filename, int flags) |
1315 |
{ |
1316 |
BDRVRawState *s = bs->opaque; |
1317 |
int access_flags, create_flags;
|
1318 |
DWORD overlapped; |
1319 |
char device_name[64]; |
1320 |
|
1321 |
if (strstart(filename, "/dev/cdrom", NULL)) { |
1322 |
if (find_cdrom(device_name, sizeof(device_name)) < 0) |
1323 |
return -ENOENT;
|
1324 |
filename = device_name; |
1325 |
} else {
|
1326 |
/* transform drive letters into device name */
|
1327 |
if (((filename[0] >= 'a' && filename[0] <= 'z') || |
1328 |
(filename[0] >= 'A' && filename[0] <= 'Z')) && |
1329 |
filename[1] == ':' && filename[2] == '\0') { |
1330 |
snprintf(device_name, sizeof(device_name), "\\\\.\\%c:", filename[0]); |
1331 |
filename = device_name; |
1332 |
} |
1333 |
} |
1334 |
s->type = find_device_type(bs, filename); |
1335 |
|
1336 |
if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
1337 |
access_flags = GENERIC_READ | GENERIC_WRITE; |
1338 |
} else {
|
1339 |
access_flags = GENERIC_READ; |
1340 |
} |
1341 |
create_flags = OPEN_EXISTING; |
1342 |
|
1343 |
#ifdef QEMU_TOOL
|
1344 |
overlapped = FILE_ATTRIBUTE_NORMAL; |
1345 |
#else
|
1346 |
overlapped = FILE_FLAG_OVERLAPPED; |
1347 |
#endif
|
1348 |
s->hfile = CreateFile(filename, access_flags, |
1349 |
FILE_SHARE_READ, NULL,
|
1350 |
create_flags, overlapped, NULL);
|
1351 |
if (s->hfile == INVALID_HANDLE_VALUE) {
|
1352 |
int err = GetLastError();
|
1353 |
|
1354 |
if (err == ERROR_ACCESS_DENIED)
|
1355 |
return -EACCES;
|
1356 |
return -1; |
1357 |
} |
1358 |
return 0; |
1359 |
} |
1360 |
|
1361 |
#if 0
|
1362 |
/***********************************************/
|
1363 |
/* removable device additional commands */
|
1364 |
|
1365 |
static int raw_is_inserted(BlockDriverState *bs)
|
1366 |
{
|
1367 |
return 1;
|
1368 |
}
|
1369 |
|
1370 |
static int raw_media_changed(BlockDriverState *bs)
|
1371 |
{
|
1372 |
return -ENOTSUP;
|
1373 |
}
|
1374 |
|
1375 |
static int raw_eject(BlockDriverState *bs, int eject_flag)
|
1376 |
{
|
1377 |
DWORD ret_count;
|
1378 |
|
1379 |
if (s->type == FTYPE_FILE)
|
1380 |
return -ENOTSUP;
|
1381 |
if (eject_flag) {
|
1382 |
DeviceIoControl(s->hfile, IOCTL_STORAGE_EJECT_MEDIA,
|
1383 |
NULL, 0, NULL, 0, &lpBytesReturned, NULL);
|
1384 |
} else {
|
1385 |
DeviceIoControl(s->hfile, IOCTL_STORAGE_LOAD_MEDIA,
|
1386 |
NULL, 0, NULL, 0, &lpBytesReturned, NULL);
|
1387 |
}
|
1388 |
}
|
1389 |
|
1390 |
static int raw_set_locked(BlockDriverState *bs, int locked)
|
1391 |
{
|
1392 |
return -ENOTSUP;
|
1393 |
}
|
1394 |
#endif
|
1395 |
|
1396 |
BlockDriver bdrv_host_device = { |
1397 |
"host_device",
|
1398 |
sizeof(BDRVRawState),
|
1399 |
NULL, /* no probe for protocols */ |
1400 |
hdev_open, |
1401 |
NULL,
|
1402 |
NULL,
|
1403 |
raw_close, |
1404 |
NULL,
|
1405 |
raw_flush, |
1406 |
|
1407 |
#if 0
|
1408 |
.bdrv_aio_read = raw_aio_read,
|
1409 |
.bdrv_aio_write = raw_aio_write,
|
1410 |
.bdrv_aio_cancel = raw_aio_cancel,
|
1411 |
.aiocb_size = sizeof(RawAIOCB);
|
1412 |
#endif
|
1413 |
.bdrv_pread = raw_pread, |
1414 |
.bdrv_pwrite = raw_pwrite, |
1415 |
.bdrv_getlength = raw_getlength, |
1416 |
}; |
1417 |
#endif /* _WIN32 */ |