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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...) fprintf(logfile, formatCstr, ##args); fflush(logfile) |
65 |
#else
|
66 |
#define DEBUG_BLOCK_PRINT(formatCstr, args...)
|
67 |
#endif
|
68 |
|
69 |
#define FTYPE_FILE 0 |
70 |
#define FTYPE_CD 1 |
71 |
#define FTYPE_FD 2 |
72 |
|
73 |
/* if the FD is not accessed during that time (in ms), we try to
|
74 |
reopen it to see if the disk has been changed */
|
75 |
#define FD_OPEN_TIMEOUT 1000 |
76 |
|
77 |
typedef struct BDRVRawState { |
78 |
int fd;
|
79 |
int type;
|
80 |
unsigned int lseek_err_cnt; |
81 |
#if defined(__linux__)
|
82 |
/* linux floppy specific */
|
83 |
int fd_open_flags;
|
84 |
int64_t fd_open_time; |
85 |
int64_t fd_error_time; |
86 |
int fd_got_error;
|
87 |
int fd_media_changed;
|
88 |
#endif
|
89 |
} BDRVRawState; |
90 |
|
91 |
static int fd_open(BlockDriverState *bs); |
92 |
|
93 |
static int raw_open(BlockDriverState *bs, const char *filename, int flags) |
94 |
{ |
95 |
BDRVRawState *s = bs->opaque; |
96 |
int fd, open_flags, ret;
|
97 |
|
98 |
s->lseek_err_cnt = 0;
|
99 |
|
100 |
open_flags = O_BINARY; |
101 |
if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
102 |
open_flags |= O_RDWR; |
103 |
} else {
|
104 |
open_flags |= O_RDONLY; |
105 |
bs->read_only = 1;
|
106 |
} |
107 |
if (flags & BDRV_O_CREAT)
|
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open_flags |= O_CREAT | O_TRUNC; |
109 |
|
110 |
s->type = FTYPE_FILE; |
111 |
|
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fd = open(filename, open_flags, 0644);
|
113 |
if (fd < 0) { |
114 |
ret = -errno; |
115 |
if (ret == -EROFS)
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116 |
ret = -EACCES; |
117 |
return ret;
|
118 |
} |
119 |
s->fd = fd; |
120 |
return 0; |
121 |
} |
122 |
|
123 |
/* XXX: use host sector size if necessary with:
|
124 |
#ifdef DIOCGSECTORSIZE
|
125 |
{
|
126 |
unsigned int sectorsize = 512;
|
127 |
if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) &&
|
128 |
sectorsize > bufsize)
|
129 |
bufsize = sectorsize;
|
130 |
}
|
131 |
#endif
|
132 |
#ifdef CONFIG_COCOA
|
133 |
u_int32_t blockSize = 512;
|
134 |
if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) {
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135 |
bufsize = blockSize;
|
136 |
}
|
137 |
#endif
|
138 |
*/
|
139 |
|
140 |
static int raw_pread(BlockDriverState *bs, int64_t offset, |
141 |
uint8_t *buf, int count)
|
142 |
{ |
143 |
BDRVRawState *s = bs->opaque; |
144 |
int ret;
|
145 |
|
146 |
ret = fd_open(bs); |
147 |
if (ret < 0) |
148 |
return ret;
|
149 |
|
150 |
if (lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
151 |
++(s->lseek_err_cnt); |
152 |
if(s->lseek_err_cnt <= 10) { |
153 |
DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %lld, %p, %d) [%lld] lseek failed : %d = %s\n",
|
154 |
s->fd, bs->filename, offset, buf, count, |
155 |
bs->total_sectors, errno, strerror(errno)); |
156 |
} |
157 |
return -1; |
158 |
} |
159 |
s->lseek_err_cnt=0;
|
160 |
|
161 |
ret = read(s->fd, buf, count); |
162 |
if (ret == count)
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goto label__raw_read__success;
|
164 |
|
165 |
DEBUG_BLOCK_PRINT("raw_read(%d:%s, %lld, %p, %d) [%lld] read failed %d : %d = %s\n",
|
166 |
s->fd, bs->filename, offset, buf, count, |
167 |
bs->total_sectors, ret, errno, strerror(errno)); |
168 |
|
169 |
/* Try harder for CDrom. */
|
170 |
if (bs->type == BDRV_TYPE_CDROM) {
|
171 |
lseek(s->fd, offset, SEEK_SET); |
172 |
ret = read(s->fd, buf, count); |
173 |
if (ret == count)
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174 |
goto label__raw_read__success;
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175 |
lseek(s->fd, offset, SEEK_SET); |
176 |
ret = read(s->fd, buf, count); |
177 |
if (ret == count)
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178 |
goto label__raw_read__success;
|
179 |
|
180 |
DEBUG_BLOCK_PRINT("raw_read(%d:%s, %lld, %p, %d) [%lld] retry read failed %d : %d = %s\n",
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s->fd, bs->filename, offset, buf, count, |
182 |
bs->total_sectors, ret, errno, strerror(errno)); |
183 |
} |
184 |
|
185 |
return -1; |
186 |
|
187 |
label__raw_read__success:
|
188 |
|
189 |
return ret;
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190 |
} |
191 |
|
192 |
static int raw_pwrite(BlockDriverState *bs, int64_t offset, |
193 |
const uint8_t *buf, int count) |
194 |
{ |
195 |
BDRVRawState *s = bs->opaque; |
196 |
int ret;
|
197 |
|
198 |
ret = fd_open(bs); |
199 |
if (ret < 0) |
200 |
return ret;
|
201 |
|
202 |
if (lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
203 |
++(s->lseek_err_cnt); |
204 |
if(s->lseek_err_cnt) {
|
205 |
DEBUG_BLOCK_PRINT("raw_write(%d:%s, %lld, %p, %d) [%lld] lseek failed : %d = %s\n",
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s->fd, bs->filename, offset, buf, count, |
207 |
bs->total_sectors, errno, strerror(errno)); |
208 |
} |
209 |
return -1; |
210 |
} |
211 |
s->lseek_err_cnt = 0;
|
212 |
|
213 |
ret = write(s->fd, buf, count); |
214 |
if (ret == count)
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215 |
goto label__raw_write__success;
|
216 |
|
217 |
DEBUG_BLOCK_PRINT("raw_write(%d:%s, %lld, %p, %d) [%lld] write failed %d : %d = %s\n",
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218 |
s->fd, bs->filename, offset, buf, count, |
219 |
bs->total_sectors, ret, errno, strerror(errno)); |
220 |
|
221 |
return -1; |
222 |
|
223 |
label__raw_write__success:
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224 |
|
225 |
return ret;
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226 |
} |
227 |
|
228 |
/***********************************************************/
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229 |
/* Unix AIO using POSIX AIO */
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230 |
|
231 |
typedef struct RawAIOCB { |
232 |
BlockDriverAIOCB common; |
233 |
struct aiocb aiocb;
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234 |
struct RawAIOCB *next;
|
235 |
} RawAIOCB; |
236 |
|
237 |
static int aio_sig_num = SIGUSR2; |
238 |
static RawAIOCB *first_aio; /* AIO issued */ |
239 |
static int aio_initialized = 0; |
240 |
|
241 |
static void aio_signal_handler(int signum) |
242 |
{ |
243 |
#ifndef QEMU_TOOL
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244 |
CPUState *env = cpu_single_env; |
245 |
if (env) {
|
246 |
/* stop the currently executing cpu because a timer occured */
|
247 |
cpu_interrupt(env, CPU_INTERRUPT_EXIT); |
248 |
#ifdef USE_KQEMU
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249 |
if (env->kqemu_enabled) {
|
250 |
kqemu_cpu_interrupt(env); |
251 |
} |
252 |
#endif
|
253 |
} |
254 |
#endif
|
255 |
} |
256 |
|
257 |
void qemu_aio_init(void) |
258 |
{ |
259 |
struct sigaction act;
|
260 |
|
261 |
aio_initialized = 1;
|
262 |
|
263 |
sigfillset(&act.sa_mask); |
264 |
act.sa_flags = 0; /* do not restart syscalls to interrupt select() */ |
265 |
act.sa_handler = aio_signal_handler; |
266 |
sigaction(aio_sig_num, &act, NULL);
|
267 |
|
268 |
#if defined(__GLIBC__) && defined(__linux__)
|
269 |
{ |
270 |
/* XXX: aio thread exit seems to hang on RedHat 9 and this init
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271 |
seems to fix the problem. */
|
272 |
struct aioinit ai;
|
273 |
memset(&ai, 0, sizeof(ai)); |
274 |
ai.aio_threads = 1;
|
275 |
ai.aio_num = 1;
|
276 |
ai.aio_idle_time = 365 * 100000; |
277 |
aio_init(&ai); |
278 |
} |
279 |
#endif
|
280 |
} |
281 |
|
282 |
void qemu_aio_poll(void) |
283 |
{ |
284 |
RawAIOCB *acb, **pacb; |
285 |
int ret;
|
286 |
|
287 |
for(;;) {
|
288 |
pacb = &first_aio; |
289 |
for(;;) {
|
290 |
acb = *pacb; |
291 |
if (!acb)
|
292 |
goto the_end;
|
293 |
ret = aio_error(&acb->aiocb); |
294 |
if (ret == ECANCELED) {
|
295 |
/* remove the request */
|
296 |
*pacb = acb->next; |
297 |
qemu_aio_release(acb); |
298 |
} else if (ret != EINPROGRESS) { |
299 |
/* end of aio */
|
300 |
if (ret == 0) { |
301 |
ret = aio_return(&acb->aiocb); |
302 |
if (ret == acb->aiocb.aio_nbytes)
|
303 |
ret = 0;
|
304 |
else
|
305 |
ret = -EINVAL; |
306 |
} else {
|
307 |
ret = -ret; |
308 |
} |
309 |
/* remove the request */
|
310 |
*pacb = acb->next; |
311 |
/* call the callback */
|
312 |
acb->common.cb(acb->common.opaque, ret); |
313 |
qemu_aio_release(acb); |
314 |
break;
|
315 |
} else {
|
316 |
pacb = &acb->next; |
317 |
} |
318 |
} |
319 |
} |
320 |
the_end: ;
|
321 |
} |
322 |
|
323 |
/* Wait for all IO requests to complete. */
|
324 |
void qemu_aio_flush(void) |
325 |
{ |
326 |
qemu_aio_wait_start(); |
327 |
qemu_aio_poll(); |
328 |
while (first_aio) {
|
329 |
qemu_aio_wait(); |
330 |
} |
331 |
qemu_aio_wait_end(); |
332 |
} |
333 |
|
334 |
/* wait until at least one AIO was handled */
|
335 |
static sigset_t wait_oset;
|
336 |
|
337 |
void qemu_aio_wait_start(void) |
338 |
{ |
339 |
sigset_t set; |
340 |
|
341 |
if (!aio_initialized)
|
342 |
qemu_aio_init(); |
343 |
sigemptyset(&set); |
344 |
sigaddset(&set, aio_sig_num); |
345 |
sigprocmask(SIG_BLOCK, &set, &wait_oset); |
346 |
} |
347 |
|
348 |
void qemu_aio_wait(void) |
349 |
{ |
350 |
sigset_t set; |
351 |
int nb_sigs;
|
352 |
|
353 |
#ifndef QEMU_TOOL
|
354 |
if (qemu_bh_poll())
|
355 |
return;
|
356 |
#endif
|
357 |
sigemptyset(&set); |
358 |
sigaddset(&set, aio_sig_num); |
359 |
sigwait(&set, &nb_sigs); |
360 |
qemu_aio_poll(); |
361 |
} |
362 |
|
363 |
void qemu_aio_wait_end(void) |
364 |
{ |
365 |
sigprocmask(SIG_SETMASK, &wait_oset, NULL);
|
366 |
} |
367 |
|
368 |
static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
|
369 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
370 |
BlockDriverCompletionFunc *cb, void *opaque)
|
371 |
{ |
372 |
BDRVRawState *s = bs->opaque; |
373 |
RawAIOCB *acb; |
374 |
|
375 |
if (fd_open(bs) < 0) |
376 |
return NULL; |
377 |
|
378 |
acb = qemu_aio_get(bs, cb, opaque); |
379 |
if (!acb)
|
380 |
return NULL; |
381 |
acb->aiocb.aio_fildes = s->fd; |
382 |
acb->aiocb.aio_sigevent.sigev_signo = aio_sig_num; |
383 |
acb->aiocb.aio_sigevent.sigev_notify = SIGEV_SIGNAL; |
384 |
acb->aiocb.aio_buf = buf; |
385 |
acb->aiocb.aio_nbytes = nb_sectors * 512;
|
386 |
acb->aiocb.aio_offset = sector_num * 512;
|
387 |
acb->next = first_aio; |
388 |
first_aio = acb; |
389 |
return acb;
|
390 |
} |
391 |
|
392 |
static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
|
393 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
394 |
BlockDriverCompletionFunc *cb, void *opaque)
|
395 |
{ |
396 |
RawAIOCB *acb; |
397 |
|
398 |
acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
399 |
if (!acb)
|
400 |
return NULL; |
401 |
if (aio_read(&acb->aiocb) < 0) { |
402 |
qemu_aio_release(acb); |
403 |
return NULL; |
404 |
} |
405 |
return &acb->common;
|
406 |
} |
407 |
|
408 |
static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
|
409 |
int64_t sector_num, const uint8_t *buf, int nb_sectors, |
410 |
BlockDriverCompletionFunc *cb, void *opaque)
|
411 |
{ |
412 |
RawAIOCB *acb; |
413 |
|
414 |
acb = raw_aio_setup(bs, sector_num, (uint8_t*)buf, nb_sectors, cb, opaque); |
415 |
if (!acb)
|
416 |
return NULL; |
417 |
if (aio_write(&acb->aiocb) < 0) { |
418 |
qemu_aio_release(acb); |
419 |
return NULL; |
420 |
} |
421 |
return &acb->common;
|
422 |
} |
423 |
|
424 |
static void raw_aio_cancel(BlockDriverAIOCB *blockacb) |
425 |
{ |
426 |
int ret;
|
427 |
RawAIOCB *acb = (RawAIOCB *)blockacb; |
428 |
RawAIOCB **pacb; |
429 |
|
430 |
ret = aio_cancel(acb->aiocb.aio_fildes, &acb->aiocb); |
431 |
if (ret == AIO_NOTCANCELED) {
|
432 |
/* fail safe: if the aio could not be canceled, we wait for
|
433 |
it */
|
434 |
while (aio_error(&acb->aiocb) == EINPROGRESS);
|
435 |
} |
436 |
|
437 |
/* remove the callback from the queue */
|
438 |
pacb = &first_aio; |
439 |
for(;;) {
|
440 |
if (*pacb == NULL) { |
441 |
break;
|
442 |
} else if (*pacb == acb) { |
443 |
*pacb = acb->next; |
444 |
qemu_aio_release(acb); |
445 |
break;
|
446 |
} |
447 |
pacb = &acb->next; |
448 |
} |
449 |
} |
450 |
|
451 |
static void raw_close(BlockDriverState *bs) |
452 |
{ |
453 |
BDRVRawState *s = bs->opaque; |
454 |
if (s->fd >= 0) { |
455 |
close(s->fd); |
456 |
s->fd = -1;
|
457 |
} |
458 |
} |
459 |
|
460 |
static int raw_truncate(BlockDriverState *bs, int64_t offset) |
461 |
{ |
462 |
BDRVRawState *s = bs->opaque; |
463 |
if (s->type != FTYPE_FILE)
|
464 |
return -ENOTSUP;
|
465 |
if (ftruncate(s->fd, offset) < 0) |
466 |
return -errno;
|
467 |
return 0; |
468 |
} |
469 |
|
470 |
static int64_t raw_getlength(BlockDriverState *bs)
|
471 |
{ |
472 |
BDRVRawState *s = bs->opaque; |
473 |
int fd = s->fd;
|
474 |
int64_t size; |
475 |
#ifdef _BSD
|
476 |
struct stat sb;
|
477 |
#endif
|
478 |
#ifdef __sun__
|
479 |
struct dk_minfo minfo;
|
480 |
int rv;
|
481 |
#endif
|
482 |
int ret;
|
483 |
|
484 |
ret = fd_open(bs); |
485 |
if (ret < 0) |
486 |
return ret;
|
487 |
|
488 |
#ifdef _BSD
|
489 |
if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
|
490 |
#ifdef DIOCGMEDIASIZE
|
491 |
if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
|
492 |
#endif
|
493 |
#ifdef CONFIG_COCOA
|
494 |
size = LONG_LONG_MAX; |
495 |
#else
|
496 |
size = lseek(fd, 0LL, SEEK_END);
|
497 |
#endif
|
498 |
} else
|
499 |
#endif
|
500 |
#ifdef __sun__
|
501 |
/*
|
502 |
* use the DKIOCGMEDIAINFO ioctl to read the size.
|
503 |
*/
|
504 |
rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo ); |
505 |
if ( rv != -1 ) { |
506 |
size = minfo.dki_lbsize * minfo.dki_capacity; |
507 |
} else /* there are reports that lseek on some devices |
508 |
fails, but irc discussion said that contingency
|
509 |
on contingency was overkill */
|
510 |
#endif
|
511 |
{ |
512 |
size = lseek(fd, 0, SEEK_END);
|
513 |
} |
514 |
return size;
|
515 |
} |
516 |
|
517 |
static int raw_create(const char *filename, int64_t total_size, |
518 |
const char *backing_file, int flags) |
519 |
{ |
520 |
int fd;
|
521 |
|
522 |
if (flags || backing_file)
|
523 |
return -ENOTSUP;
|
524 |
|
525 |
fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
526 |
0644);
|
527 |
if (fd < 0) |
528 |
return -EIO;
|
529 |
ftruncate(fd, total_size * 512);
|
530 |
close(fd); |
531 |
return 0; |
532 |
} |
533 |
|
534 |
static void raw_flush(BlockDriverState *bs) |
535 |
{ |
536 |
BDRVRawState *s = bs->opaque; |
537 |
fsync(s->fd); |
538 |
} |
539 |
|
540 |
BlockDriver bdrv_raw = { |
541 |
"raw",
|
542 |
sizeof(BDRVRawState),
|
543 |
NULL, /* no probe for protocols */ |
544 |
raw_open, |
545 |
NULL,
|
546 |
NULL,
|
547 |
raw_close, |
548 |
raw_create, |
549 |
raw_flush, |
550 |
|
551 |
.bdrv_aio_read = raw_aio_read, |
552 |
.bdrv_aio_write = raw_aio_write, |
553 |
.bdrv_aio_cancel = raw_aio_cancel, |
554 |
.aiocb_size = sizeof(RawAIOCB),
|
555 |
.protocol_name = "file",
|
556 |
.bdrv_pread = raw_pread, |
557 |
.bdrv_pwrite = raw_pwrite, |
558 |
.bdrv_truncate = raw_truncate, |
559 |
.bdrv_getlength = raw_getlength, |
560 |
}; |
561 |
|
562 |
/***********************************************/
|
563 |
/* host device */
|
564 |
|
565 |
#ifdef CONFIG_COCOA
|
566 |
static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator );
|
567 |
static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ); |
568 |
|
569 |
kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ) |
570 |
{ |
571 |
kern_return_t kernResult; |
572 |
mach_port_t masterPort; |
573 |
CFMutableDictionaryRef classesToMatch; |
574 |
|
575 |
kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort ); |
576 |
if ( KERN_SUCCESS != kernResult ) {
|
577 |
printf( "IOMasterPort returned %d\n", kernResult );
|
578 |
} |
579 |
|
580 |
classesToMatch = IOServiceMatching( kIOCDMediaClass ); |
581 |
if ( classesToMatch == NULL ) { |
582 |
printf( "IOServiceMatching returned a NULL dictionary.\n" );
|
583 |
} else {
|
584 |
CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue ); |
585 |
} |
586 |
kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator ); |
587 |
if ( KERN_SUCCESS != kernResult )
|
588 |
{ |
589 |
printf( "IOServiceGetMatchingServices returned %d\n", kernResult );
|
590 |
} |
591 |
|
592 |
return kernResult;
|
593 |
} |
594 |
|
595 |
kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize )
|
596 |
{ |
597 |
io_object_t nextMedia; |
598 |
kern_return_t kernResult = KERN_FAILURE; |
599 |
*bsdPath = '\0';
|
600 |
nextMedia = IOIteratorNext( mediaIterator ); |
601 |
if ( nextMedia )
|
602 |
{ |
603 |
CFTypeRef bsdPathAsCFString; |
604 |
bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 );
|
605 |
if ( bsdPathAsCFString ) {
|
606 |
size_t devPathLength; |
607 |
strcpy( bsdPath, _PATH_DEV ); |
608 |
strcat( bsdPath, "r" );
|
609 |
devPathLength = strlen( bsdPath ); |
610 |
if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) {
|
611 |
kernResult = KERN_SUCCESS; |
612 |
} |
613 |
CFRelease( bsdPathAsCFString ); |
614 |
} |
615 |
IOObjectRelease( nextMedia ); |
616 |
} |
617 |
|
618 |
return kernResult;
|
619 |
} |
620 |
|
621 |
#endif
|
622 |
|
623 |
static int hdev_open(BlockDriverState *bs, const char *filename, int flags) |
624 |
{ |
625 |
BDRVRawState *s = bs->opaque; |
626 |
int fd, open_flags, ret;
|
627 |
|
628 |
#ifdef CONFIG_COCOA
|
629 |
if (strstart(filename, "/dev/cdrom", NULL)) { |
630 |
kern_return_t kernResult; |
631 |
io_iterator_t mediaIterator; |
632 |
char bsdPath[ MAXPATHLEN ];
|
633 |
int fd;
|
634 |
|
635 |
kernResult = FindEjectableCDMedia( &mediaIterator ); |
636 |
kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) );
|
637 |
|
638 |
if ( bsdPath[ 0 ] != '\0' ) { |
639 |
strcat(bsdPath,"s0");
|
640 |
/* some CDs don't have a partition 0 */
|
641 |
fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE); |
642 |
if (fd < 0) { |
643 |
bsdPath[strlen(bsdPath)-1] = '1'; |
644 |
} else {
|
645 |
close(fd); |
646 |
} |
647 |
filename = bsdPath; |
648 |
} |
649 |
|
650 |
if ( mediaIterator )
|
651 |
IOObjectRelease( mediaIterator ); |
652 |
} |
653 |
#endif
|
654 |
open_flags = O_BINARY; |
655 |
if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
656 |
open_flags |= O_RDWR; |
657 |
} else {
|
658 |
open_flags |= O_RDONLY; |
659 |
bs->read_only = 1;
|
660 |
} |
661 |
|
662 |
s->type = FTYPE_FILE; |
663 |
#if defined(__linux__)
|
664 |
if (strstart(filename, "/dev/cd", NULL)) { |
665 |
/* open will not fail even if no CD is inserted */
|
666 |
open_flags |= O_NONBLOCK; |
667 |
s->type = FTYPE_CD; |
668 |
} else if (strstart(filename, "/dev/fd", NULL)) { |
669 |
s->type = FTYPE_FD; |
670 |
s->fd_open_flags = open_flags; |
671 |
/* open will not fail even if no floppy is inserted */
|
672 |
open_flags |= O_NONBLOCK; |
673 |
} |
674 |
#endif
|
675 |
fd = open(filename, open_flags, 0644);
|
676 |
if (fd < 0) { |
677 |
ret = -errno; |
678 |
if (ret == -EROFS)
|
679 |
ret = -EACCES; |
680 |
return ret;
|
681 |
} |
682 |
s->fd = fd; |
683 |
#if defined(__linux__)
|
684 |
/* close fd so that we can reopen it as needed */
|
685 |
if (s->type == FTYPE_FD) {
|
686 |
close(s->fd); |
687 |
s->fd = -1;
|
688 |
s->fd_media_changed = 1;
|
689 |
} |
690 |
#endif
|
691 |
return 0; |
692 |
} |
693 |
|
694 |
#if defined(__linux__) && !defined(QEMU_TOOL)
|
695 |
|
696 |
/* Note: we do not have a reliable method to detect if the floppy is
|
697 |
present. The current method is to try to open the floppy at every
|
698 |
I/O and to keep it opened during a few hundreds of ms. */
|
699 |
static int fd_open(BlockDriverState *bs) |
700 |
{ |
701 |
BDRVRawState *s = bs->opaque; |
702 |
int last_media_present;
|
703 |
|
704 |
if (s->type != FTYPE_FD)
|
705 |
return 0; |
706 |
last_media_present = (s->fd >= 0);
|
707 |
if (s->fd >= 0 && |
708 |
(qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) { |
709 |
close(s->fd); |
710 |
s->fd = -1;
|
711 |
#ifdef DEBUG_FLOPPY
|
712 |
printf("Floppy closed\n");
|
713 |
#endif
|
714 |
} |
715 |
if (s->fd < 0) { |
716 |
if (s->fd_got_error &&
|
717 |
(qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) { |
718 |
#ifdef DEBUG_FLOPPY
|
719 |
printf("No floppy (open delayed)\n");
|
720 |
#endif
|
721 |
return -EIO;
|
722 |
} |
723 |
s->fd = open(bs->filename, s->fd_open_flags); |
724 |
if (s->fd < 0) { |
725 |
s->fd_error_time = qemu_get_clock(rt_clock); |
726 |
s->fd_got_error = 1;
|
727 |
if (last_media_present)
|
728 |
s->fd_media_changed = 1;
|
729 |
#ifdef DEBUG_FLOPPY
|
730 |
printf("No floppy\n");
|
731 |
#endif
|
732 |
return -EIO;
|
733 |
} |
734 |
#ifdef DEBUG_FLOPPY
|
735 |
printf("Floppy opened\n");
|
736 |
#endif
|
737 |
} |
738 |
if (!last_media_present)
|
739 |
s->fd_media_changed = 1;
|
740 |
s->fd_open_time = qemu_get_clock(rt_clock); |
741 |
s->fd_got_error = 0;
|
742 |
return 0; |
743 |
} |
744 |
#else
|
745 |
static int fd_open(BlockDriverState *bs) |
746 |
{ |
747 |
return 0; |
748 |
} |
749 |
#endif
|
750 |
|
751 |
#if defined(__linux__)
|
752 |
|
753 |
static int raw_is_inserted(BlockDriverState *bs) |
754 |
{ |
755 |
BDRVRawState *s = bs->opaque; |
756 |
int ret;
|
757 |
|
758 |
switch(s->type) {
|
759 |
case FTYPE_CD:
|
760 |
ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); |
761 |
if (ret == CDS_DISC_OK)
|
762 |
return 1; |
763 |
else
|
764 |
return 0; |
765 |
break;
|
766 |
case FTYPE_FD:
|
767 |
ret = fd_open(bs); |
768 |
return (ret >= 0); |
769 |
default:
|
770 |
return 1; |
771 |
} |
772 |
} |
773 |
|
774 |
/* currently only used by fdc.c, but a CD version would be good too */
|
775 |
static int raw_media_changed(BlockDriverState *bs) |
776 |
{ |
777 |
BDRVRawState *s = bs->opaque; |
778 |
|
779 |
switch(s->type) {
|
780 |
case FTYPE_FD:
|
781 |
{ |
782 |
int ret;
|
783 |
/* XXX: we do not have a true media changed indication. It
|
784 |
does not work if the floppy is changed without trying
|
785 |
to read it */
|
786 |
fd_open(bs); |
787 |
ret = s->fd_media_changed; |
788 |
s->fd_media_changed = 0;
|
789 |
#ifdef DEBUG_FLOPPY
|
790 |
printf("Floppy changed=%d\n", ret);
|
791 |
#endif
|
792 |
return ret;
|
793 |
} |
794 |
default:
|
795 |
return -ENOTSUP;
|
796 |
} |
797 |
} |
798 |
|
799 |
static int raw_eject(BlockDriverState *bs, int eject_flag) |
800 |
{ |
801 |
BDRVRawState *s = bs->opaque; |
802 |
|
803 |
switch(s->type) {
|
804 |
case FTYPE_CD:
|
805 |
if (eject_flag) {
|
806 |
if (ioctl (s->fd, CDROMEJECT, NULL) < 0) |
807 |
perror("CDROMEJECT");
|
808 |
} else {
|
809 |
if (ioctl (s->fd, CDROMCLOSETRAY, NULL) < 0) |
810 |
perror("CDROMEJECT");
|
811 |
} |
812 |
break;
|
813 |
case FTYPE_FD:
|
814 |
{ |
815 |
int fd;
|
816 |
if (s->fd >= 0) { |
817 |
close(s->fd); |
818 |
s->fd = -1;
|
819 |
} |
820 |
fd = open(bs->filename, s->fd_open_flags | O_NONBLOCK); |
821 |
if (fd >= 0) { |
822 |
if (ioctl(fd, FDEJECT, 0) < 0) |
823 |
perror("FDEJECT");
|
824 |
close(fd); |
825 |
} |
826 |
} |
827 |
break;
|
828 |
default:
|
829 |
return -ENOTSUP;
|
830 |
} |
831 |
return 0; |
832 |
} |
833 |
|
834 |
static int raw_set_locked(BlockDriverState *bs, int locked) |
835 |
{ |
836 |
BDRVRawState *s = bs->opaque; |
837 |
|
838 |
switch(s->type) {
|
839 |
case FTYPE_CD:
|
840 |
if (ioctl (s->fd, CDROM_LOCKDOOR, locked) < 0) { |
841 |
/* Note: an error can happen if the distribution automatically
|
842 |
mounts the CD-ROM */
|
843 |
// perror("CDROM_LOCKDOOR");
|
844 |
} |
845 |
break;
|
846 |
default:
|
847 |
return -ENOTSUP;
|
848 |
} |
849 |
return 0; |
850 |
} |
851 |
|
852 |
#else
|
853 |
|
854 |
static int raw_is_inserted(BlockDriverState *bs) |
855 |
{ |
856 |
return 1; |
857 |
} |
858 |
|
859 |
static int raw_media_changed(BlockDriverState *bs) |
860 |
{ |
861 |
return -ENOTSUP;
|
862 |
} |
863 |
|
864 |
static int raw_eject(BlockDriverState *bs, int eject_flag) |
865 |
{ |
866 |
return -ENOTSUP;
|
867 |
} |
868 |
|
869 |
static int raw_set_locked(BlockDriverState *bs, int locked) |
870 |
{ |
871 |
return -ENOTSUP;
|
872 |
} |
873 |
|
874 |
#endif /* !linux */ |
875 |
|
876 |
BlockDriver bdrv_host_device = { |
877 |
"host_device",
|
878 |
sizeof(BDRVRawState),
|
879 |
NULL, /* no probe for protocols */ |
880 |
hdev_open, |
881 |
NULL,
|
882 |
NULL,
|
883 |
raw_close, |
884 |
NULL,
|
885 |
raw_flush, |
886 |
|
887 |
.bdrv_aio_read = raw_aio_read, |
888 |
.bdrv_aio_write = raw_aio_write, |
889 |
.bdrv_aio_cancel = raw_aio_cancel, |
890 |
.aiocb_size = sizeof(RawAIOCB),
|
891 |
.bdrv_pread = raw_pread, |
892 |
.bdrv_pwrite = raw_pwrite, |
893 |
.bdrv_getlength = raw_getlength, |
894 |
|
895 |
/* removable device support */
|
896 |
.bdrv_is_inserted = raw_is_inserted, |
897 |
.bdrv_media_changed = raw_media_changed, |
898 |
.bdrv_eject = raw_eject, |
899 |
.bdrv_set_locked = raw_set_locked, |
900 |
}; |
901 |
|
902 |
#else /* _WIN32 */ |
903 |
|
904 |
/* XXX: use another file ? */
|
905 |
#include <winioctl.h> |
906 |
|
907 |
#define FTYPE_FILE 0 |
908 |
#define FTYPE_CD 1 |
909 |
#define FTYPE_HARDDISK 2 |
910 |
|
911 |
typedef struct BDRVRawState { |
912 |
HANDLE hfile; |
913 |
int type;
|
914 |
char drive_path[16]; /* format: "d:\" */ |
915 |
} BDRVRawState; |
916 |
|
917 |
typedef struct RawAIOCB { |
918 |
BlockDriverAIOCB common; |
919 |
HANDLE hEvent; |
920 |
OVERLAPPED ov; |
921 |
int count;
|
922 |
} RawAIOCB; |
923 |
|
924 |
int qemu_ftruncate64(int fd, int64_t length) |
925 |
{ |
926 |
LARGE_INTEGER li; |
927 |
LONG high; |
928 |
HANDLE h; |
929 |
BOOL res; |
930 |
|
931 |
if ((GetVersion() & 0x80000000UL) && (length >> 32) != 0) |
932 |
return -1; |
933 |
|
934 |
h = (HANDLE)_get_osfhandle(fd); |
935 |
|
936 |
/* get current position, ftruncate do not change position */
|
937 |
li.HighPart = 0;
|
938 |
li.LowPart = SetFilePointer (h, 0, &li.HighPart, FILE_CURRENT);
|
939 |
if (li.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR) |
940 |
return -1; |
941 |
|
942 |
high = length >> 32;
|
943 |
if (!SetFilePointer(h, (DWORD) length, &high, FILE_BEGIN))
|
944 |
return -1; |
945 |
res = SetEndOfFile(h); |
946 |
|
947 |
/* back to old position */
|
948 |
SetFilePointer(h, li.LowPart, &li.HighPart, FILE_BEGIN); |
949 |
return res ? 0 : -1; |
950 |
} |
951 |
|
952 |
static int set_sparse(int fd) |
953 |
{ |
954 |
DWORD returned; |
955 |
return (int) DeviceIoControl((HANDLE)_get_osfhandle(fd), FSCTL_SET_SPARSE, |
956 |
NULL, 0, NULL, 0, &returned, NULL); |
957 |
} |
958 |
|
959 |
static int raw_open(BlockDriverState *bs, const char *filename, int flags) |
960 |
{ |
961 |
BDRVRawState *s = bs->opaque; |
962 |
int access_flags, create_flags;
|
963 |
DWORD overlapped; |
964 |
|
965 |
s->type = FTYPE_FILE; |
966 |
|
967 |
if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
968 |
access_flags = GENERIC_READ | GENERIC_WRITE; |
969 |
} else {
|
970 |
access_flags = GENERIC_READ; |
971 |
} |
972 |
if (flags & BDRV_O_CREAT) {
|
973 |
create_flags = CREATE_ALWAYS; |
974 |
} else {
|
975 |
create_flags = OPEN_EXISTING; |
976 |
} |
977 |
#ifdef QEMU_TOOL
|
978 |
overlapped = FILE_ATTRIBUTE_NORMAL; |
979 |
#else
|
980 |
overlapped = FILE_FLAG_OVERLAPPED; |
981 |
#endif
|
982 |
s->hfile = CreateFile(filename, access_flags, |
983 |
FILE_SHARE_READ, NULL,
|
984 |
create_flags, overlapped, NULL);
|
985 |
if (s->hfile == INVALID_HANDLE_VALUE) {
|
986 |
int err = GetLastError();
|
987 |
|
988 |
if (err == ERROR_ACCESS_DENIED)
|
989 |
return -EACCES;
|
990 |
return -1; |
991 |
} |
992 |
return 0; |
993 |
} |
994 |
|
995 |
static int raw_pread(BlockDriverState *bs, int64_t offset, |
996 |
uint8_t *buf, int count)
|
997 |
{ |
998 |
BDRVRawState *s = bs->opaque; |
999 |
OVERLAPPED ov; |
1000 |
DWORD ret_count; |
1001 |
int ret;
|
1002 |
|
1003 |
memset(&ov, 0, sizeof(ov)); |
1004 |
ov.Offset = offset; |
1005 |
ov.OffsetHigh = offset >> 32;
|
1006 |
ret = ReadFile(s->hfile, buf, count, &ret_count, &ov); |
1007 |
if (!ret) {
|
1008 |
ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE); |
1009 |
if (!ret)
|
1010 |
return -EIO;
|
1011 |
else
|
1012 |
return ret_count;
|
1013 |
} |
1014 |
return ret_count;
|
1015 |
} |
1016 |
|
1017 |
static int raw_pwrite(BlockDriverState *bs, int64_t offset, |
1018 |
const uint8_t *buf, int count) |
1019 |
{ |
1020 |
BDRVRawState *s = bs->opaque; |
1021 |
OVERLAPPED ov; |
1022 |
DWORD ret_count; |
1023 |
int ret;
|
1024 |
|
1025 |
memset(&ov, 0, sizeof(ov)); |
1026 |
ov.Offset = offset; |
1027 |
ov.OffsetHigh = offset >> 32;
|
1028 |
ret = WriteFile(s->hfile, buf, count, &ret_count, &ov); |
1029 |
if (!ret) {
|
1030 |
ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE); |
1031 |
if (!ret)
|
1032 |
return -EIO;
|
1033 |
else
|
1034 |
return ret_count;
|
1035 |
} |
1036 |
return ret_count;
|
1037 |
} |
1038 |
|
1039 |
#if 0
|
1040 |
#ifndef QEMU_TOOL
|
1041 |
static void raw_aio_cb(void *opaque)
|
1042 |
{
|
1043 |
RawAIOCB *acb = opaque;
|
1044 |
BlockDriverState *bs = acb->common.bs;
|
1045 |
BDRVRawState *s = bs->opaque;
|
1046 |
DWORD ret_count;
|
1047 |
int ret;
|
1048 |
|
1049 |
ret = GetOverlappedResult(s->hfile, &acb->ov, &ret_count, TRUE);
|
1050 |
if (!ret || ret_count != acb->count) {
|
1051 |
acb->common.cb(acb->common.opaque, -EIO);
|
1052 |
} else {
|
1053 |
acb->common.cb(acb->common.opaque, 0);
|
1054 |
}
|
1055 |
}
|
1056 |
#endif
|
1057 |
|
1058 |
static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
|
1059 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
1060 |
BlockDriverCompletionFunc *cb, void *opaque)
|
1061 |
{ |
1062 |
RawAIOCB *acb; |
1063 |
int64_t offset; |
1064 |
|
1065 |
acb = qemu_aio_get(bs, cb, opaque); |
1066 |
if (acb->hEvent) {
|
1067 |
acb->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); |
1068 |
if (!acb->hEvent) {
|
1069 |
qemu_aio_release(acb); |
1070 |
return NULL; |
1071 |
} |
1072 |
} |
1073 |
memset(&acb->ov, 0, sizeof(acb->ov)); |
1074 |
offset = sector_num * 512;
|
1075 |
acb->ov.Offset = offset; |
1076 |
acb->ov.OffsetHigh = offset >> 32;
|
1077 |
acb->ov.hEvent = acb->hEvent; |
1078 |
acb->count = nb_sectors * 512;
|
1079 |
#ifndef QEMU_TOOL
|
1080 |
qemu_add_wait_object(acb->ov.hEvent, raw_aio_cb, acb); |
1081 |
#endif
|
1082 |
return acb;
|
1083 |
} |
1084 |
|
1085 |
static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
|
1086 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
1087 |
BlockDriverCompletionFunc *cb, void *opaque)
|
1088 |
{ |
1089 |
BDRVRawState *s = bs->opaque; |
1090 |
RawAIOCB *acb; |
1091 |
int ret;
|
1092 |
|
1093 |
acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
1094 |
if (!acb)
|
1095 |
return NULL; |
1096 |
ret = ReadFile(s->hfile, buf, acb->count, NULL, &acb->ov);
|
1097 |
if (!ret) {
|
1098 |
qemu_aio_release(acb); |
1099 |
return NULL; |
1100 |
} |
1101 |
#ifdef QEMU_TOOL
|
1102 |
qemu_aio_release(acb); |
1103 |
#endif
|
1104 |
return (BlockDriverAIOCB *)acb;
|
1105 |
} |
1106 |
|
1107 |
static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
|
1108 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
1109 |
BlockDriverCompletionFunc *cb, void *opaque)
|
1110 |
{ |
1111 |
BDRVRawState *s = bs->opaque; |
1112 |
RawAIOCB *acb; |
1113 |
int ret;
|
1114 |
|
1115 |
acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
1116 |
if (!acb)
|
1117 |
return NULL; |
1118 |
ret = WriteFile(s->hfile, buf, acb->count, NULL, &acb->ov);
|
1119 |
if (!ret) {
|
1120 |
qemu_aio_release(acb); |
1121 |
return NULL; |
1122 |
} |
1123 |
#ifdef QEMU_TOOL
|
1124 |
qemu_aio_release(acb); |
1125 |
#endif
|
1126 |
return (BlockDriverAIOCB *)acb;
|
1127 |
} |
1128 |
|
1129 |
static void raw_aio_cancel(BlockDriverAIOCB *blockacb) |
1130 |
{ |
1131 |
#ifndef QEMU_TOOL
|
1132 |
RawAIOCB *acb = (RawAIOCB *)blockacb; |
1133 |
BlockDriverState *bs = acb->common.bs; |
1134 |
BDRVRawState *s = bs->opaque; |
1135 |
|
1136 |
qemu_del_wait_object(acb->ov.hEvent, raw_aio_cb, acb); |
1137 |
/* XXX: if more than one async I/O it is not correct */
|
1138 |
CancelIo(s->hfile); |
1139 |
qemu_aio_release(acb); |
1140 |
#endif
|
1141 |
} |
1142 |
#endif /* #if 0 */ |
1143 |
|
1144 |
static void raw_flush(BlockDriverState *bs) |
1145 |
{ |
1146 |
BDRVRawState *s = bs->opaque; |
1147 |
FlushFileBuffers(s->hfile); |
1148 |
} |
1149 |
|
1150 |
static void raw_close(BlockDriverState *bs) |
1151 |
{ |
1152 |
BDRVRawState *s = bs->opaque; |
1153 |
CloseHandle(s->hfile); |
1154 |
} |
1155 |
|
1156 |
static int raw_truncate(BlockDriverState *bs, int64_t offset) |
1157 |
{ |
1158 |
BDRVRawState *s = bs->opaque; |
1159 |
DWORD low, high; |
1160 |
|
1161 |
low = offset; |
1162 |
high = offset >> 32;
|
1163 |
if (!SetFilePointer(s->hfile, low, &high, FILE_BEGIN))
|
1164 |
return -EIO;
|
1165 |
if (!SetEndOfFile(s->hfile))
|
1166 |
return -EIO;
|
1167 |
return 0; |
1168 |
} |
1169 |
|
1170 |
static int64_t raw_getlength(BlockDriverState *bs)
|
1171 |
{ |
1172 |
BDRVRawState *s = bs->opaque; |
1173 |
LARGE_INTEGER l; |
1174 |
ULARGE_INTEGER available, total, total_free; |
1175 |
DISK_GEOMETRY dg; |
1176 |
DWORD count; |
1177 |
BOOL status; |
1178 |
|
1179 |
switch(s->type) {
|
1180 |
case FTYPE_FILE:
|
1181 |
l.LowPart = GetFileSize(s->hfile, &l.HighPart); |
1182 |
if (l.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR) |
1183 |
return -EIO;
|
1184 |
break;
|
1185 |
case FTYPE_CD:
|
1186 |
if (!GetDiskFreeSpaceEx(s->drive_path, &available, &total, &total_free))
|
1187 |
return -EIO;
|
1188 |
l.QuadPart = total.QuadPart; |
1189 |
break;
|
1190 |
case FTYPE_HARDDISK:
|
1191 |
status = DeviceIoControl(s->hfile, IOCTL_DISK_GET_DRIVE_GEOMETRY, |
1192 |
NULL, 0, &dg, sizeof(dg), &count, NULL); |
1193 |
if (status != FALSE) {
|
1194 |
l.QuadPart = dg.Cylinders.QuadPart * dg.TracksPerCylinder |
1195 |
* dg.SectorsPerTrack * dg.BytesPerSector; |
1196 |
} |
1197 |
break;
|
1198 |
default:
|
1199 |
return -EIO;
|
1200 |
} |
1201 |
return l.QuadPart;
|
1202 |
} |
1203 |
|
1204 |
static int raw_create(const char *filename, int64_t total_size, |
1205 |
const char *backing_file, int flags) |
1206 |
{ |
1207 |
int fd;
|
1208 |
|
1209 |
if (flags || backing_file)
|
1210 |
return -ENOTSUP;
|
1211 |
|
1212 |
fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
1213 |
0644);
|
1214 |
if (fd < 0) |
1215 |
return -EIO;
|
1216 |
set_sparse(fd); |
1217 |
ftruncate(fd, total_size * 512);
|
1218 |
close(fd); |
1219 |
return 0; |
1220 |
} |
1221 |
|
1222 |
void qemu_aio_init(void) |
1223 |
{ |
1224 |
} |
1225 |
|
1226 |
void qemu_aio_poll(void) |
1227 |
{ |
1228 |
} |
1229 |
|
1230 |
void qemu_aio_flush(void) |
1231 |
{ |
1232 |
} |
1233 |
|
1234 |
void qemu_aio_wait_start(void) |
1235 |
{ |
1236 |
} |
1237 |
|
1238 |
void qemu_aio_wait(void) |
1239 |
{ |
1240 |
#ifndef QEMU_TOOL
|
1241 |
qemu_bh_poll(); |
1242 |
#endif
|
1243 |
} |
1244 |
|
1245 |
void qemu_aio_wait_end(void) |
1246 |
{ |
1247 |
} |
1248 |
|
1249 |
BlockDriver bdrv_raw = { |
1250 |
"raw",
|
1251 |
sizeof(BDRVRawState),
|
1252 |
NULL, /* no probe for protocols */ |
1253 |
raw_open, |
1254 |
NULL,
|
1255 |
NULL,
|
1256 |
raw_close, |
1257 |
raw_create, |
1258 |
raw_flush, |
1259 |
|
1260 |
#if 0
|
1261 |
.bdrv_aio_read = raw_aio_read,
|
1262 |
.bdrv_aio_write = raw_aio_write,
|
1263 |
.bdrv_aio_cancel = raw_aio_cancel,
|
1264 |
.aiocb_size = sizeof(RawAIOCB);
|
1265 |
#endif
|
1266 |
.protocol_name = "file",
|
1267 |
.bdrv_pread = raw_pread, |
1268 |
.bdrv_pwrite = raw_pwrite, |
1269 |
.bdrv_truncate = raw_truncate, |
1270 |
.bdrv_getlength = raw_getlength, |
1271 |
}; |
1272 |
|
1273 |
/***********************************************/
|
1274 |
/* host device */
|
1275 |
|
1276 |
static int find_cdrom(char *cdrom_name, int cdrom_name_size) |
1277 |
{ |
1278 |
char drives[256], *pdrv = drives; |
1279 |
UINT type; |
1280 |
|
1281 |
memset(drives, 0, sizeof(drives)); |
1282 |
GetLogicalDriveStrings(sizeof(drives), drives);
|
1283 |
while(pdrv[0] != '\0') { |
1284 |
type = GetDriveType(pdrv); |
1285 |
switch(type) {
|
1286 |
case DRIVE_CDROM:
|
1287 |
snprintf(cdrom_name, cdrom_name_size, "\\\\.\\%c:", pdrv[0]); |
1288 |
return 0; |
1289 |
break;
|
1290 |
} |
1291 |
pdrv += lstrlen(pdrv) + 1;
|
1292 |
} |
1293 |
return -1; |
1294 |
} |
1295 |
|
1296 |
static int find_device_type(BlockDriverState *bs, const char *filename) |
1297 |
{ |
1298 |
BDRVRawState *s = bs->opaque; |
1299 |
UINT type; |
1300 |
const char *p; |
1301 |
|
1302 |
if (strstart(filename, "\\\\.\\", &p) || |
1303 |
strstart(filename, "//./", &p)) {
|
1304 |
if (stristart(p, "PhysicalDrive", NULL)) |
1305 |
return FTYPE_HARDDISK;
|
1306 |
snprintf(s->drive_path, sizeof(s->drive_path), "%c:\\", p[0]); |
1307 |
type = GetDriveType(s->drive_path); |
1308 |
if (type == DRIVE_CDROM)
|
1309 |
return FTYPE_CD;
|
1310 |
else
|
1311 |
return FTYPE_FILE;
|
1312 |
} else {
|
1313 |
return FTYPE_FILE;
|
1314 |
} |
1315 |
} |
1316 |
|
1317 |
static int hdev_open(BlockDriverState *bs, const char *filename, int flags) |
1318 |
{ |
1319 |
BDRVRawState *s = bs->opaque; |
1320 |
int access_flags, create_flags;
|
1321 |
DWORD overlapped; |
1322 |
char device_name[64]; |
1323 |
|
1324 |
if (strstart(filename, "/dev/cdrom", NULL)) { |
1325 |
if (find_cdrom(device_name, sizeof(device_name)) < 0) |
1326 |
return -ENOENT;
|
1327 |
filename = device_name; |
1328 |
} else {
|
1329 |
/* transform drive letters into device name */
|
1330 |
if (((filename[0] >= 'a' && filename[0] <= 'z') || |
1331 |
(filename[0] >= 'A' && filename[0] <= 'Z')) && |
1332 |
filename[1] == ':' && filename[2] == '\0') { |
1333 |
snprintf(device_name, sizeof(device_name), "\\\\.\\%c:", filename[0]); |
1334 |
filename = device_name; |
1335 |
} |
1336 |
} |
1337 |
s->type = find_device_type(bs, filename); |
1338 |
|
1339 |
if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
1340 |
access_flags = GENERIC_READ | GENERIC_WRITE; |
1341 |
} else {
|
1342 |
access_flags = GENERIC_READ; |
1343 |
} |
1344 |
create_flags = OPEN_EXISTING; |
1345 |
|
1346 |
#ifdef QEMU_TOOL
|
1347 |
overlapped = FILE_ATTRIBUTE_NORMAL; |
1348 |
#else
|
1349 |
overlapped = FILE_FLAG_OVERLAPPED; |
1350 |
#endif
|
1351 |
s->hfile = CreateFile(filename, access_flags, |
1352 |
FILE_SHARE_READ, NULL,
|
1353 |
create_flags, overlapped, NULL);
|
1354 |
if (s->hfile == INVALID_HANDLE_VALUE) {
|
1355 |
int err = GetLastError();
|
1356 |
|
1357 |
if (err == ERROR_ACCESS_DENIED)
|
1358 |
return -EACCES;
|
1359 |
return -1; |
1360 |
} |
1361 |
return 0; |
1362 |
} |
1363 |
|
1364 |
#if 0
|
1365 |
/***********************************************/
|
1366 |
/* removable device additional commands */
|
1367 |
|
1368 |
static int raw_is_inserted(BlockDriverState *bs)
|
1369 |
{
|
1370 |
return 1;
|
1371 |
}
|
1372 |
|
1373 |
static int raw_media_changed(BlockDriverState *bs)
|
1374 |
{
|
1375 |
return -ENOTSUP;
|
1376 |
}
|
1377 |
|
1378 |
static int raw_eject(BlockDriverState *bs, int eject_flag)
|
1379 |
{
|
1380 |
DWORD ret_count;
|
1381 |
|
1382 |
if (s->type == FTYPE_FILE)
|
1383 |
return -ENOTSUP;
|
1384 |
if (eject_flag) {
|
1385 |
DeviceIoControl(s->hfile, IOCTL_STORAGE_EJECT_MEDIA,
|
1386 |
NULL, 0, NULL, 0, &lpBytesReturned, NULL);
|
1387 |
} else {
|
1388 |
DeviceIoControl(s->hfile, IOCTL_STORAGE_LOAD_MEDIA,
|
1389 |
NULL, 0, NULL, 0, &lpBytesReturned, NULL);
|
1390 |
}
|
1391 |
}
|
1392 |
|
1393 |
static int raw_set_locked(BlockDriverState *bs, int locked)
|
1394 |
{
|
1395 |
return -ENOTSUP;
|
1396 |
}
|
1397 |
#endif
|
1398 |
|
1399 |
BlockDriver bdrv_host_device = { |
1400 |
"host_device",
|
1401 |
sizeof(BDRVRawState),
|
1402 |
NULL, /* no probe for protocols */ |
1403 |
hdev_open, |
1404 |
NULL,
|
1405 |
NULL,
|
1406 |
raw_close, |
1407 |
NULL,
|
1408 |
raw_flush, |
1409 |
|
1410 |
#if 0
|
1411 |
.bdrv_aio_read = raw_aio_read,
|
1412 |
.bdrv_aio_write = raw_aio_write,
|
1413 |
.bdrv_aio_cancel = raw_aio_cancel,
|
1414 |
.aiocb_size = sizeof(RawAIOCB);
|
1415 |
#endif
|
1416 |
.bdrv_pread = raw_pread, |
1417 |
.bdrv_pwrite = raw_pwrite, |
1418 |
.bdrv_getlength = raw_getlength, |
1419 |
}; |
1420 |
#endif /* _WIN32 */ |