]>
Commit | Line | Data |
---|---|---|
83f64091 FB |
1 | /* |
2 | * Block driver for RAW files | |
3 | * | |
4 | * Copyright (c) 2006 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | #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 | #include <sys/dkio.h> | |
48 | #endif | |
19cb3738 FB |
49 | #ifdef __linux__ |
50 | #include <sys/ioctl.h> | |
51 | #include <linux/cdrom.h> | |
52 | #include <linux/fd.h> | |
53 | #endif | |
1cb6c3fd TS |
54 | #ifdef __FreeBSD__ |
55 | #include <sys/disk.h> | |
56 | #endif | |
83f64091 | 57 | |
19cb3738 | 58 | //#define DEBUG_FLOPPY |
83f64091 | 59 | |
19cb3738 FB |
60 | #define FTYPE_FILE 0 |
61 | #define FTYPE_CD 1 | |
62 | #define FTYPE_FD 2 | |
83f64091 | 63 | |
19cb3738 FB |
64 | /* if the FD is not accessed during that time (in ms), we try to |
65 | reopen it to see if the disk has been changed */ | |
66 | #define FD_OPEN_TIMEOUT 1000 | |
83f64091 | 67 | |
19cb3738 FB |
68 | typedef struct BDRVRawState { |
69 | int fd; | |
70 | int type; | |
71 | #if defined(__linux__) | |
72 | /* linux floppy specific */ | |
73 | int fd_open_flags; | |
74 | int64_t fd_open_time; | |
75 | int64_t fd_error_time; | |
76 | int fd_got_error; | |
77 | int fd_media_changed; | |
83f64091 | 78 | #endif |
19cb3738 FB |
79 | } BDRVRawState; |
80 | ||
81 | static int fd_open(BlockDriverState *bs); | |
83f64091 FB |
82 | |
83 | static int raw_open(BlockDriverState *bs, const char *filename, int flags) | |
84 | { | |
85 | BDRVRawState *s = bs->opaque; | |
19cb3738 | 86 | int fd, open_flags, ret; |
83f64091 | 87 | |
83f64091 FB |
88 | open_flags = O_BINARY; |
89 | if ((flags & BDRV_O_ACCESS) == O_RDWR) { | |
90 | open_flags |= O_RDWR; | |
91 | } else { | |
92 | open_flags |= O_RDONLY; | |
93 | bs->read_only = 1; | |
94 | } | |
95 | if (flags & BDRV_O_CREAT) | |
96 | open_flags |= O_CREAT | O_TRUNC; | |
97 | ||
19cb3738 FB |
98 | s->type = FTYPE_FILE; |
99 | ||
83f64091 | 100 | fd = open(filename, open_flags, 0644); |
19cb3738 FB |
101 | if (fd < 0) { |
102 | ret = -errno; | |
103 | if (ret == -EROFS) | |
104 | ret = -EACCES; | |
105 | return ret; | |
106 | } | |
83f64091 FB |
107 | s->fd = fd; |
108 | return 0; | |
109 | } | |
110 | ||
111 | /* XXX: use host sector size if necessary with: | |
112 | #ifdef DIOCGSECTORSIZE | |
113 | { | |
114 | unsigned int sectorsize = 512; | |
115 | if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) && | |
116 | sectorsize > bufsize) | |
117 | bufsize = sectorsize; | |
118 | } | |
119 | #endif | |
120 | #ifdef CONFIG_COCOA | |
121 | u_int32_t blockSize = 512; | |
122 | if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) { | |
123 | bufsize = blockSize; | |
124 | } | |
125 | #endif | |
126 | */ | |
127 | ||
128 | static int raw_pread(BlockDriverState *bs, int64_t offset, | |
129 | uint8_t *buf, int count) | |
130 | { | |
131 | BDRVRawState *s = bs->opaque; | |
132 | int ret; | |
133 | ||
19cb3738 FB |
134 | ret = fd_open(bs); |
135 | if (ret < 0) | |
136 | return ret; | |
137 | ||
83f64091 FB |
138 | lseek(s->fd, offset, SEEK_SET); |
139 | ret = read(s->fd, buf, count); | |
140 | return ret; | |
141 | } | |
142 | ||
143 | static int raw_pwrite(BlockDriverState *bs, int64_t offset, | |
144 | const uint8_t *buf, int count) | |
145 | { | |
146 | BDRVRawState *s = bs->opaque; | |
147 | int ret; | |
148 | ||
19cb3738 FB |
149 | ret = fd_open(bs); |
150 | if (ret < 0) | |
151 | return ret; | |
152 | ||
83f64091 FB |
153 | lseek(s->fd, offset, SEEK_SET); |
154 | ret = write(s->fd, buf, count); | |
155 | return ret; | |
156 | } | |
157 | ||
158 | /***********************************************************/ | |
19cb3738 | 159 | /* Unix AIO using POSIX AIO */ |
83f64091 FB |
160 | |
161 | typedef struct RawAIOCB { | |
ce1a14dc | 162 | BlockDriverAIOCB common; |
83f64091 | 163 | struct aiocb aiocb; |
ce1a14dc | 164 | struct RawAIOCB *next; |
83f64091 FB |
165 | } RawAIOCB; |
166 | ||
167 | static int aio_sig_num = SIGUSR2; | |
ce1a14dc | 168 | static RawAIOCB *first_aio; /* AIO issued */ |
979b67ad | 169 | static int aio_initialized = 0; |
83f64091 | 170 | |
83f64091 FB |
171 | static void aio_signal_handler(int signum) |
172 | { | |
979b67ad | 173 | #ifndef QEMU_TOOL |
83f64091 FB |
174 | CPUState *env = cpu_single_env; |
175 | if (env) { | |
176 | /* stop the currently executing cpu because a timer occured */ | |
177 | cpu_interrupt(env, CPU_INTERRUPT_EXIT); | |
178 | #ifdef USE_KQEMU | |
179 | if (env->kqemu_enabled) { | |
180 | kqemu_cpu_interrupt(env); | |
181 | } | |
182 | #endif | |
183 | } | |
979b67ad | 184 | #endif |
83f64091 FB |
185 | } |
186 | ||
187 | void qemu_aio_init(void) | |
188 | { | |
189 | struct sigaction act; | |
979b67ad FB |
190 | |
191 | aio_initialized = 1; | |
83f64091 FB |
192 | |
193 | sigfillset(&act.sa_mask); | |
194 | act.sa_flags = 0; /* do not restart syscalls to interrupt select() */ | |
195 | act.sa_handler = aio_signal_handler; | |
196 | sigaction(aio_sig_num, &act, NULL); | |
197 | ||
19cb3738 | 198 | #if defined(__GLIBC__) && defined(__linux__) |
83f64091 | 199 | { |
19cb3738 FB |
200 | /* XXX: aio thread exit seems to hang on RedHat 9 and this init |
201 | seems to fix the problem. */ | |
83f64091 FB |
202 | struct aioinit ai; |
203 | memset(&ai, 0, sizeof(ai)); | |
19cb3738 | 204 | ai.aio_threads = 1; |
83f64091 FB |
205 | ai.aio_num = 1; |
206 | ai.aio_idle_time = 365 * 100000; | |
207 | aio_init(&ai); | |
208 | } | |
19cb3738 | 209 | #endif |
83f64091 | 210 | } |
83f64091 FB |
211 | |
212 | void qemu_aio_poll(void) | |
213 | { | |
ce1a14dc | 214 | RawAIOCB *acb, **pacb; |
83f64091 FB |
215 | int ret; |
216 | ||
217 | for(;;) { | |
218 | pacb = &first_aio; | |
219 | for(;;) { | |
220 | acb = *pacb; | |
221 | if (!acb) | |
222 | goto the_end; | |
ce1a14dc | 223 | ret = aio_error(&acb->aiocb); |
83f64091 FB |
224 | if (ret == ECANCELED) { |
225 | /* remove the request */ | |
ce1a14dc PB |
226 | *pacb = acb->next; |
227 | qemu_aio_release(acb); | |
83f64091 FB |
228 | } else if (ret != EINPROGRESS) { |
229 | /* end of aio */ | |
230 | if (ret == 0) { | |
ce1a14dc PB |
231 | ret = aio_return(&acb->aiocb); |
232 | if (ret == acb->aiocb.aio_nbytes) | |
83f64091 FB |
233 | ret = 0; |
234 | else | |
19cb3738 | 235 | ret = -EINVAL; |
83f64091 FB |
236 | } else { |
237 | ret = -ret; | |
238 | } | |
239 | /* remove the request */ | |
ce1a14dc | 240 | *pacb = acb->next; |
83f64091 | 241 | /* call the callback */ |
ce1a14dc PB |
242 | acb->common.cb(acb->common.opaque, ret); |
243 | qemu_aio_release(acb); | |
83f64091 FB |
244 | break; |
245 | } else { | |
ce1a14dc | 246 | pacb = &acb->next; |
83f64091 FB |
247 | } |
248 | } | |
249 | } | |
250 | the_end: ; | |
251 | } | |
252 | ||
6192bc37 PB |
253 | /* Wait for all IO requests to complete. */ |
254 | void qemu_aio_flush(void) | |
255 | { | |
256 | qemu_aio_wait_start(); | |
257 | qemu_aio_poll(); | |
258 | while (first_aio) { | |
259 | qemu_aio_wait(); | |
260 | } | |
261 | qemu_aio_wait_end(); | |
262 | } | |
263 | ||
83f64091 FB |
264 | /* wait until at least one AIO was handled */ |
265 | static sigset_t wait_oset; | |
266 | ||
267 | void qemu_aio_wait_start(void) | |
268 | { | |
269 | sigset_t set; | |
979b67ad FB |
270 | |
271 | if (!aio_initialized) | |
272 | qemu_aio_init(); | |
83f64091 FB |
273 | sigemptyset(&set); |
274 | sigaddset(&set, aio_sig_num); | |
275 | sigprocmask(SIG_BLOCK, &set, &wait_oset); | |
276 | } | |
277 | ||
278 | void qemu_aio_wait(void) | |
279 | { | |
280 | sigset_t set; | |
281 | int nb_sigs; | |
6eb5733a FB |
282 | |
283 | #ifndef QEMU_TOOL | |
284 | if (qemu_bh_poll()) | |
285 | return; | |
286 | #endif | |
83f64091 FB |
287 | sigemptyset(&set); |
288 | sigaddset(&set, aio_sig_num); | |
289 | sigwait(&set, &nb_sigs); | |
290 | qemu_aio_poll(); | |
291 | } | |
292 | ||
293 | void qemu_aio_wait_end(void) | |
294 | { | |
295 | sigprocmask(SIG_SETMASK, &wait_oset, NULL); | |
296 | } | |
297 | ||
ce1a14dc PB |
298 | static RawAIOCB *raw_aio_setup(BlockDriverState *bs, |
299 | int64_t sector_num, uint8_t *buf, int nb_sectors, | |
300 | BlockDriverCompletionFunc *cb, void *opaque) | |
83f64091 | 301 | { |
ce1a14dc PB |
302 | BDRVRawState *s = bs->opaque; |
303 | RawAIOCB *acb; | |
304 | ||
19cb3738 FB |
305 | if (fd_open(bs) < 0) |
306 | return NULL; | |
307 | ||
ce1a14dc PB |
308 | acb = qemu_aio_get(bs, cb, opaque); |
309 | if (!acb) | |
310 | return NULL; | |
311 | acb->aiocb.aio_fildes = s->fd; | |
312 | acb->aiocb.aio_sigevent.sigev_signo = aio_sig_num; | |
313 | acb->aiocb.aio_sigevent.sigev_notify = SIGEV_SIGNAL; | |
314 | acb->aiocb.aio_buf = buf; | |
315 | acb->aiocb.aio_nbytes = nb_sectors * 512; | |
316 | acb->aiocb.aio_offset = sector_num * 512; | |
317 | acb->next = first_aio; | |
318 | first_aio = acb; | |
319 | return acb; | |
83f64091 FB |
320 | } |
321 | ||
ce1a14dc PB |
322 | static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs, |
323 | int64_t sector_num, uint8_t *buf, int nb_sectors, | |
324 | BlockDriverCompletionFunc *cb, void *opaque) | |
83f64091 | 325 | { |
ce1a14dc | 326 | RawAIOCB *acb; |
83f64091 | 327 | |
ce1a14dc PB |
328 | acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
329 | if (!acb) | |
330 | return NULL; | |
331 | if (aio_read(&acb->aiocb) < 0) { | |
332 | qemu_aio_release(acb); | |
333 | return NULL; | |
83f64091 | 334 | } |
ce1a14dc | 335 | return &acb->common; |
83f64091 FB |
336 | } |
337 | ||
ce1a14dc PB |
338 | static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs, |
339 | int64_t sector_num, const uint8_t *buf, int nb_sectors, | |
340 | BlockDriverCompletionFunc *cb, void *opaque) | |
83f64091 | 341 | { |
ce1a14dc | 342 | RawAIOCB *acb; |
83f64091 | 343 | |
ce1a14dc PB |
344 | acb = raw_aio_setup(bs, sector_num, (uint8_t*)buf, nb_sectors, cb, opaque); |
345 | if (!acb) | |
346 | return NULL; | |
347 | if (aio_write(&acb->aiocb) < 0) { | |
348 | qemu_aio_release(acb); | |
349 | return NULL; | |
83f64091 | 350 | } |
ce1a14dc | 351 | return &acb->common; |
83f64091 FB |
352 | } |
353 | ||
ce1a14dc | 354 | static void raw_aio_cancel(BlockDriverAIOCB *blockacb) |
83f64091 | 355 | { |
83f64091 | 356 | int ret; |
ce1a14dc PB |
357 | RawAIOCB *acb = (RawAIOCB *)blockacb; |
358 | RawAIOCB **pacb; | |
83f64091 | 359 | |
ce1a14dc | 360 | ret = aio_cancel(acb->aiocb.aio_fildes, &acb->aiocb); |
83f64091 FB |
361 | if (ret == AIO_NOTCANCELED) { |
362 | /* fail safe: if the aio could not be canceled, we wait for | |
363 | it */ | |
ce1a14dc | 364 | while (aio_error(&acb->aiocb) == EINPROGRESS); |
83f64091 FB |
365 | } |
366 | ||
367 | /* remove the callback from the queue */ | |
368 | pacb = &first_aio; | |
369 | for(;;) { | |
370 | if (*pacb == NULL) { | |
371 | break; | |
372 | } else if (*pacb == acb) { | |
ce1a14dc PB |
373 | *pacb = acb->next; |
374 | qemu_aio_release(acb); | |
83f64091 FB |
375 | break; |
376 | } | |
ce1a14dc | 377 | pacb = &acb->next; |
83f64091 FB |
378 | } |
379 | } | |
380 | ||
83f64091 FB |
381 | static void raw_close(BlockDriverState *bs) |
382 | { | |
383 | BDRVRawState *s = bs->opaque; | |
19cb3738 FB |
384 | if (s->fd >= 0) { |
385 | close(s->fd); | |
386 | s->fd = -1; | |
387 | } | |
83f64091 FB |
388 | } |
389 | ||
390 | static int raw_truncate(BlockDriverState *bs, int64_t offset) | |
391 | { | |
392 | BDRVRawState *s = bs->opaque; | |
19cb3738 FB |
393 | if (s->type != FTYPE_FILE) |
394 | return -ENOTSUP; | |
83f64091 FB |
395 | if (ftruncate(s->fd, offset) < 0) |
396 | return -errno; | |
397 | return 0; | |
398 | } | |
399 | ||
400 | static int64_t raw_getlength(BlockDriverState *bs) | |
401 | { | |
402 | BDRVRawState *s = bs->opaque; | |
403 | int fd = s->fd; | |
404 | int64_t size; | |
405 | #ifdef _BSD | |
406 | struct stat sb; | |
407 | #endif | |
408 | #ifdef __sun__ | |
409 | struct dk_minfo minfo; | |
410 | int rv; | |
411 | #endif | |
19cb3738 FB |
412 | int ret; |
413 | ||
414 | ret = fd_open(bs); | |
415 | if (ret < 0) | |
416 | return ret; | |
83f64091 FB |
417 | |
418 | #ifdef _BSD | |
419 | if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) { | |
420 | #ifdef DIOCGMEDIASIZE | |
421 | if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size)) | |
422 | #endif | |
423 | #ifdef CONFIG_COCOA | |
424 | size = LONG_LONG_MAX; | |
425 | #else | |
426 | size = lseek(fd, 0LL, SEEK_END); | |
427 | #endif | |
428 | } else | |
429 | #endif | |
430 | #ifdef __sun__ | |
431 | /* | |
432 | * use the DKIOCGMEDIAINFO ioctl to read the size. | |
433 | */ | |
434 | rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo ); | |
435 | if ( rv != -1 ) { | |
436 | size = minfo.dki_lbsize * minfo.dki_capacity; | |
437 | } else /* there are reports that lseek on some devices | |
438 | fails, but irc discussion said that contingency | |
439 | on contingency was overkill */ | |
440 | #endif | |
441 | { | |
442 | size = lseek(fd, 0, SEEK_END); | |
443 | } | |
83f64091 FB |
444 | return size; |
445 | } | |
446 | ||
447 | static int raw_create(const char *filename, int64_t total_size, | |
448 | const char *backing_file, int flags) | |
449 | { | |
450 | int fd; | |
451 | ||
452 | if (flags || backing_file) | |
453 | return -ENOTSUP; | |
454 | ||
9ab8a34a | 455 | fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
83f64091 FB |
456 | 0644); |
457 | if (fd < 0) | |
458 | return -EIO; | |
459 | ftruncate(fd, total_size * 512); | |
460 | close(fd); | |
461 | return 0; | |
462 | } | |
463 | ||
464 | static void raw_flush(BlockDriverState *bs) | |
465 | { | |
466 | BDRVRawState *s = bs->opaque; | |
467 | fsync(s->fd); | |
468 | } | |
469 | ||
470 | BlockDriver bdrv_raw = { | |
471 | "raw", | |
472 | sizeof(BDRVRawState), | |
473 | NULL, /* no probe for protocols */ | |
474 | raw_open, | |
475 | NULL, | |
476 | NULL, | |
477 | raw_close, | |
478 | raw_create, | |
479 | raw_flush, | |
480 | ||
83f64091 FB |
481 | .bdrv_aio_read = raw_aio_read, |
482 | .bdrv_aio_write = raw_aio_write, | |
483 | .bdrv_aio_cancel = raw_aio_cancel, | |
ce1a14dc | 484 | .aiocb_size = sizeof(RawAIOCB), |
83f64091 FB |
485 | .protocol_name = "file", |
486 | .bdrv_pread = raw_pread, | |
487 | .bdrv_pwrite = raw_pwrite, | |
488 | .bdrv_truncate = raw_truncate, | |
489 | .bdrv_getlength = raw_getlength, | |
490 | }; | |
491 | ||
19cb3738 FB |
492 | /***********************************************/ |
493 | /* host device */ | |
494 | ||
495 | #ifdef CONFIG_COCOA | |
496 | static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ); | |
497 | static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ); | |
498 | ||
499 | kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ) | |
500 | { | |
501 | kern_return_t kernResult; | |
502 | mach_port_t masterPort; | |
503 | CFMutableDictionaryRef classesToMatch; | |
504 | ||
505 | kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort ); | |
506 | if ( KERN_SUCCESS != kernResult ) { | |
507 | printf( "IOMasterPort returned %d\n", kernResult ); | |
508 | } | |
509 | ||
510 | classesToMatch = IOServiceMatching( kIOCDMediaClass ); | |
511 | if ( classesToMatch == NULL ) { | |
512 | printf( "IOServiceMatching returned a NULL dictionary.\n" ); | |
513 | } else { | |
514 | CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue ); | |
515 | } | |
516 | kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator ); | |
517 | if ( KERN_SUCCESS != kernResult ) | |
518 | { | |
519 | printf( "IOServiceGetMatchingServices returned %d\n", kernResult ); | |
520 | } | |
521 | ||
522 | return kernResult; | |
523 | } | |
524 | ||
525 | kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ) | |
526 | { | |
527 | io_object_t nextMedia; | |
528 | kern_return_t kernResult = KERN_FAILURE; | |
529 | *bsdPath = '\0'; | |
530 | nextMedia = IOIteratorNext( mediaIterator ); | |
531 | if ( nextMedia ) | |
532 | { | |
533 | CFTypeRef bsdPathAsCFString; | |
534 | bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 ); | |
535 | if ( bsdPathAsCFString ) { | |
536 | size_t devPathLength; | |
537 | strcpy( bsdPath, _PATH_DEV ); | |
538 | strcat( bsdPath, "r" ); | |
539 | devPathLength = strlen( bsdPath ); | |
540 | if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) { | |
541 | kernResult = KERN_SUCCESS; | |
542 | } | |
543 | CFRelease( bsdPathAsCFString ); | |
544 | } | |
545 | IOObjectRelease( nextMedia ); | |
546 | } | |
547 | ||
548 | return kernResult; | |
549 | } | |
550 | ||
551 | #endif | |
552 | ||
553 | static int hdev_open(BlockDriverState *bs, const char *filename, int flags) | |
554 | { | |
555 | BDRVRawState *s = bs->opaque; | |
556 | int fd, open_flags, ret; | |
557 | ||
558 | #ifdef CONFIG_COCOA | |
559 | if (strstart(filename, "/dev/cdrom", NULL)) { | |
560 | kern_return_t kernResult; | |
561 | io_iterator_t mediaIterator; | |
562 | char bsdPath[ MAXPATHLEN ]; | |
563 | int fd; | |
564 | ||
565 | kernResult = FindEjectableCDMedia( &mediaIterator ); | |
566 | kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) ); | |
567 | ||
568 | if ( bsdPath[ 0 ] != '\0' ) { | |
569 | strcat(bsdPath,"s0"); | |
570 | /* some CDs don't have a partition 0 */ | |
571 | fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE); | |
572 | if (fd < 0) { | |
573 | bsdPath[strlen(bsdPath)-1] = '1'; | |
574 | } else { | |
575 | close(fd); | |
576 | } | |
577 | filename = bsdPath; | |
578 | } | |
579 | ||
580 | if ( mediaIterator ) | |
581 | IOObjectRelease( mediaIterator ); | |
582 | } | |
583 | #endif | |
584 | open_flags = O_BINARY; | |
585 | if ((flags & BDRV_O_ACCESS) == O_RDWR) { | |
586 | open_flags |= O_RDWR; | |
587 | } else { | |
588 | open_flags |= O_RDONLY; | |
589 | bs->read_only = 1; | |
590 | } | |
591 | ||
592 | s->type = FTYPE_FILE; | |
593 | #if defined(__linux__) | |
594 | if (strstart(filename, "/dev/cd", NULL)) { | |
595 | /* open will not fail even if no CD is inserted */ | |
596 | open_flags |= O_NONBLOCK; | |
597 | s->type = FTYPE_CD; | |
598 | } else if (strstart(filename, "/dev/fd", NULL)) { | |
599 | s->type = FTYPE_FD; | |
600 | s->fd_open_flags = open_flags; | |
601 | /* open will not fail even if no floppy is inserted */ | |
602 | open_flags |= O_NONBLOCK; | |
603 | } | |
604 | #endif | |
605 | fd = open(filename, open_flags, 0644); | |
606 | if (fd < 0) { | |
607 | ret = -errno; | |
608 | if (ret == -EROFS) | |
609 | ret = -EACCES; | |
610 | return ret; | |
611 | } | |
612 | s->fd = fd; | |
613 | #if defined(__linux__) | |
614 | /* close fd so that we can reopen it as needed */ | |
615 | if (s->type == FTYPE_FD) { | |
616 | close(s->fd); | |
617 | s->fd = -1; | |
618 | s->fd_media_changed = 1; | |
619 | } | |
620 | #endif | |
621 | return 0; | |
622 | } | |
623 | ||
624 | #if defined(__linux__) && !defined(QEMU_TOOL) | |
625 | ||
626 | /* Note: we do not have a reliable method to detect if the floppy is | |
627 | present. The current method is to try to open the floppy at every | |
628 | I/O and to keep it opened during a few hundreds of ms. */ | |
629 | static int fd_open(BlockDriverState *bs) | |
630 | { | |
631 | BDRVRawState *s = bs->opaque; | |
632 | int last_media_present; | |
633 | ||
634 | if (s->type != FTYPE_FD) | |
635 | return 0; | |
636 | last_media_present = (s->fd >= 0); | |
637 | if (s->fd >= 0 && | |
638 | (qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) { | |
639 | close(s->fd); | |
640 | s->fd = -1; | |
641 | #ifdef DEBUG_FLOPPY | |
642 | printf("Floppy closed\n"); | |
643 | #endif | |
644 | } | |
645 | if (s->fd < 0) { | |
646 | if (s->fd_got_error && | |
647 | (qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) { | |
648 | #ifdef DEBUG_FLOPPY | |
649 | printf("No floppy (open delayed)\n"); | |
650 | #endif | |
651 | return -EIO; | |
652 | } | |
653 | s->fd = open(bs->filename, s->fd_open_flags); | |
654 | if (s->fd < 0) { | |
655 | s->fd_error_time = qemu_get_clock(rt_clock); | |
656 | s->fd_got_error = 1; | |
657 | if (last_media_present) | |
658 | s->fd_media_changed = 1; | |
659 | #ifdef DEBUG_FLOPPY | |
660 | printf("No floppy\n"); | |
661 | #endif | |
662 | return -EIO; | |
663 | } | |
664 | #ifdef DEBUG_FLOPPY | |
665 | printf("Floppy opened\n"); | |
666 | #endif | |
667 | } | |
668 | if (!last_media_present) | |
669 | s->fd_media_changed = 1; | |
670 | s->fd_open_time = qemu_get_clock(rt_clock); | |
671 | s->fd_got_error = 0; | |
672 | return 0; | |
673 | } | |
674 | #else | |
675 | static int fd_open(BlockDriverState *bs) | |
676 | { | |
677 | return 0; | |
678 | } | |
679 | #endif | |
680 | ||
681 | #if defined(__linux__) | |
682 | ||
683 | static int raw_is_inserted(BlockDriverState *bs) | |
684 | { | |
685 | BDRVRawState *s = bs->opaque; | |
686 | int ret; | |
687 | ||
688 | switch(s->type) { | |
689 | case FTYPE_CD: | |
690 | ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); | |
691 | if (ret == CDS_DISC_OK) | |
692 | return 1; | |
693 | else | |
694 | return 0; | |
695 | break; | |
696 | case FTYPE_FD: | |
697 | ret = fd_open(bs); | |
698 | return (ret >= 0); | |
699 | default: | |
700 | return 1; | |
701 | } | |
702 | } | |
703 | ||
704 | /* currently only used by fdc.c, but a CD version would be good too */ | |
705 | static int raw_media_changed(BlockDriverState *bs) | |
706 | { | |
707 | BDRVRawState *s = bs->opaque; | |
708 | ||
709 | switch(s->type) { | |
710 | case FTYPE_FD: | |
711 | { | |
712 | int ret; | |
713 | /* XXX: we do not have a true media changed indication. It | |
714 | does not work if the floppy is changed without trying | |
715 | to read it */ | |
716 | fd_open(bs); | |
717 | ret = s->fd_media_changed; | |
718 | s->fd_media_changed = 0; | |
719 | #ifdef DEBUG_FLOPPY | |
720 | printf("Floppy changed=%d\n", ret); | |
721 | #endif | |
722 | return ret; | |
723 | } | |
724 | default: | |
725 | return -ENOTSUP; | |
726 | } | |
727 | } | |
728 | ||
729 | static int raw_eject(BlockDriverState *bs, int eject_flag) | |
730 | { | |
731 | BDRVRawState *s = bs->opaque; | |
732 | ||
733 | switch(s->type) { | |
734 | case FTYPE_CD: | |
735 | if (eject_flag) { | |
736 | if (ioctl (s->fd, CDROMEJECT, NULL) < 0) | |
737 | perror("CDROMEJECT"); | |
738 | } else { | |
739 | if (ioctl (s->fd, CDROMCLOSETRAY, NULL) < 0) | |
740 | perror("CDROMEJECT"); | |
741 | } | |
742 | break; | |
743 | case FTYPE_FD: | |
744 | { | |
745 | int fd; | |
746 | if (s->fd >= 0) { | |
747 | close(s->fd); | |
748 | s->fd = -1; | |
749 | } | |
750 | fd = open(bs->filename, s->fd_open_flags | O_NONBLOCK); | |
751 | if (fd >= 0) { | |
752 | if (ioctl(fd, FDEJECT, 0) < 0) | |
753 | perror("FDEJECT"); | |
754 | close(fd); | |
755 | } | |
756 | } | |
757 | break; | |
758 | default: | |
759 | return -ENOTSUP; | |
760 | } | |
761 | return 0; | |
762 | } | |
763 | ||
764 | static int raw_set_locked(BlockDriverState *bs, int locked) | |
765 | { | |
766 | BDRVRawState *s = bs->opaque; | |
767 | ||
768 | switch(s->type) { | |
769 | case FTYPE_CD: | |
770 | if (ioctl (s->fd, CDROM_LOCKDOOR, locked) < 0) { | |
771 | /* Note: an error can happen if the distribution automatically | |
772 | mounts the CD-ROM */ | |
773 | // perror("CDROM_LOCKDOOR"); | |
774 | } | |
775 | break; | |
776 | default: | |
777 | return -ENOTSUP; | |
778 | } | |
779 | return 0; | |
780 | } | |
781 | ||
782 | #else | |
783 | ||
784 | static int raw_is_inserted(BlockDriverState *bs) | |
785 | { | |
786 | return 1; | |
787 | } | |
788 | ||
789 | static int raw_media_changed(BlockDriverState *bs) | |
790 | { | |
791 | return -ENOTSUP; | |
792 | } | |
793 | ||
794 | static int raw_eject(BlockDriverState *bs, int eject_flag) | |
795 | { | |
796 | return -ENOTSUP; | |
797 | } | |
798 | ||
799 | static int raw_set_locked(BlockDriverState *bs, int locked) | |
800 | { | |
801 | return -ENOTSUP; | |
802 | } | |
803 | ||
804 | #endif /* !linux */ | |
805 | ||
806 | BlockDriver bdrv_host_device = { | |
807 | "host_device", | |
808 | sizeof(BDRVRawState), | |
809 | NULL, /* no probe for protocols */ | |
810 | hdev_open, | |
811 | NULL, | |
812 | NULL, | |
813 | raw_close, | |
814 | NULL, | |
815 | raw_flush, | |
816 | ||
817 | .bdrv_aio_read = raw_aio_read, | |
818 | .bdrv_aio_write = raw_aio_write, | |
819 | .bdrv_aio_cancel = raw_aio_cancel, | |
820 | .aiocb_size = sizeof(RawAIOCB), | |
821 | .bdrv_pread = raw_pread, | |
822 | .bdrv_pwrite = raw_pwrite, | |
823 | .bdrv_getlength = raw_getlength, | |
824 | ||
825 | /* removable device support */ | |
826 | .bdrv_is_inserted = raw_is_inserted, | |
827 | .bdrv_media_changed = raw_media_changed, | |
828 | .bdrv_eject = raw_eject, | |
829 | .bdrv_set_locked = raw_set_locked, | |
830 | }; | |
831 | ||
83f64091 FB |
832 | #else /* _WIN32 */ |
833 | ||
834 | /* XXX: use another file ? */ | |
83f64091 FB |
835 | #include <winioctl.h> |
836 | ||
19cb3738 FB |
837 | #define FTYPE_FILE 0 |
838 | #define FTYPE_CD 1 | |
839 | ||
83f64091 FB |
840 | typedef struct BDRVRawState { |
841 | HANDLE hfile; | |
19cb3738 | 842 | int type; |
f45512fe | 843 | char drive_path[16]; /* format: "d:\" */ |
83f64091 FB |
844 | } BDRVRawState; |
845 | ||
846 | typedef struct RawAIOCB { | |
ce1a14dc | 847 | BlockDriverAIOCB common; |
83f64091 FB |
848 | HANDLE hEvent; |
849 | OVERLAPPED ov; | |
850 | int count; | |
851 | } RawAIOCB; | |
852 | ||
853 | int qemu_ftruncate64(int fd, int64_t length) | |
854 | { | |
855 | LARGE_INTEGER li; | |
856 | LONG high; | |
857 | HANDLE h; | |
858 | BOOL res; | |
859 | ||
860 | if ((GetVersion() & 0x80000000UL) && (length >> 32) != 0) | |
861 | return -1; | |
862 | ||
863 | h = (HANDLE)_get_osfhandle(fd); | |
864 | ||
865 | /* get current position, ftruncate do not change position */ | |
866 | li.HighPart = 0; | |
867 | li.LowPart = SetFilePointer (h, 0, &li.HighPart, FILE_CURRENT); | |
868 | if (li.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR) | |
869 | return -1; | |
870 | ||
871 | high = length >> 32; | |
872 | if (!SetFilePointer(h, (DWORD) length, &high, FILE_BEGIN)) | |
873 | return -1; | |
874 | res = SetEndOfFile(h); | |
875 | ||
876 | /* back to old position */ | |
877 | SetFilePointer(h, li.LowPart, &li.HighPart, FILE_BEGIN); | |
878 | return res ? 0 : -1; | |
879 | } | |
880 | ||
881 | static int set_sparse(int fd) | |
882 | { | |
883 | DWORD returned; | |
884 | return (int) DeviceIoControl((HANDLE)_get_osfhandle(fd), FSCTL_SET_SPARSE, | |
885 | NULL, 0, NULL, 0, &returned, NULL); | |
886 | } | |
887 | ||
888 | static int raw_open(BlockDriverState *bs, const char *filename, int flags) | |
889 | { | |
890 | BDRVRawState *s = bs->opaque; | |
891 | int access_flags, create_flags; | |
ce1a14dc | 892 | DWORD overlapped; |
19cb3738 | 893 | |
f45512fe | 894 | s->type = FTYPE_FILE; |
83f64091 FB |
895 | |
896 | if ((flags & BDRV_O_ACCESS) == O_RDWR) { | |
897 | access_flags = GENERIC_READ | GENERIC_WRITE; | |
898 | } else { | |
899 | access_flags = GENERIC_READ; | |
900 | } | |
979b67ad | 901 | if (flags & BDRV_O_CREAT) { |
83f64091 FB |
902 | create_flags = CREATE_ALWAYS; |
903 | } else { | |
904 | create_flags = OPEN_EXISTING; | |
905 | } | |
ce1a14dc PB |
906 | #ifdef QEMU_TOOL |
907 | overlapped = 0; | |
908 | #else | |
909 | overlapped = FILE_FLAG_OVERLAPPED; | |
910 | #endif | |
83f64091 FB |
911 | s->hfile = CreateFile(filename, access_flags, |
912 | FILE_SHARE_READ, NULL, | |
ce1a14dc | 913 | create_flags, overlapped, 0); |
83f64091 FB |
914 | if (s->hfile == INVALID_HANDLE_VALUE) |
915 | return -1; | |
916 | return 0; | |
917 | } | |
918 | ||
919 | static int raw_pread(BlockDriverState *bs, int64_t offset, | |
920 | uint8_t *buf, int count) | |
921 | { | |
922 | BDRVRawState *s = bs->opaque; | |
923 | OVERLAPPED ov; | |
924 | DWORD ret_count; | |
925 | int ret; | |
926 | ||
927 | memset(&ov, 0, sizeof(ov)); | |
928 | ov.Offset = offset; | |
929 | ov.OffsetHigh = offset >> 32; | |
436e15b8 FB |
930 | ret = ReadFile(s->hfile, buf, count, &ret_count, &ov); |
931 | if (!ret) { | |
932 | ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE); | |
933 | if (!ret) | |
934 | return -EIO; | |
935 | else | |
936 | return ret_count; | |
937 | } | |
83f64091 FB |
938 | return ret_count; |
939 | } | |
940 | ||
941 | static int raw_pwrite(BlockDriverState *bs, int64_t offset, | |
942 | const uint8_t *buf, int count) | |
943 | { | |
944 | BDRVRawState *s = bs->opaque; | |
945 | OVERLAPPED ov; | |
946 | DWORD ret_count; | |
947 | int ret; | |
948 | ||
949 | memset(&ov, 0, sizeof(ov)); | |
950 | ov.Offset = offset; | |
951 | ov.OffsetHigh = offset >> 32; | |
436e15b8 FB |
952 | ret = WriteFile(s->hfile, buf, count, &ret_count, &ov); |
953 | if (!ret) { | |
954 | ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE); | |
955 | if (!ret) | |
956 | return -EIO; | |
957 | else | |
958 | return ret_count; | |
959 | } | |
83f64091 FB |
960 | return ret_count; |
961 | } | |
962 | ||
436e15b8 | 963 | #ifndef QEMU_TOOL |
83f64091 FB |
964 | static void raw_aio_cb(void *opaque) |
965 | { | |
ce1a14dc PB |
966 | RawAIOCB *acb = opaque; |
967 | BlockDriverState *bs = acb->common.bs; | |
979b67ad | 968 | BDRVRawState *s = bs->opaque; |
83f64091 FB |
969 | DWORD ret_count; |
970 | int ret; | |
971 | ||
ce1a14dc PB |
972 | ret = GetOverlappedResult(s->hfile, &acb->ov, &ret_count, TRUE); |
973 | if (!ret || ret_count != acb->count) { | |
974 | acb->common.cb(acb->common.opaque, -EIO); | |
83f64091 | 975 | } else { |
ce1a14dc | 976 | acb->common.cb(acb->common.opaque, 0); |
83f64091 FB |
977 | } |
978 | } | |
436e15b8 | 979 | #endif |
ce1a14dc PB |
980 | |
981 | static RawAIOCB *raw_aio_setup(BlockDriverState *bs, | |
982 | int64_t sector_num, uint8_t *buf, int nb_sectors, | |
983 | BlockDriverCompletionFunc *cb, void *opaque) | |
83f64091 | 984 | { |
ce1a14dc | 985 | RawAIOCB *acb; |
83f64091 FB |
986 | int64_t offset; |
987 | ||
ce1a14dc PB |
988 | acb = qemu_aio_get(bs, cb, opaque); |
989 | if (acb->hEvent) { | |
990 | acb->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); | |
991 | if (!acb->hEvent) { | |
992 | qemu_aio_release(acb); | |
993 | return NULL; | |
994 | } | |
995 | } | |
996 | memset(&acb->ov, 0, sizeof(acb->ov)); | |
83f64091 | 997 | offset = sector_num * 512; |
ce1a14dc PB |
998 | acb->ov.Offset = offset; |
999 | acb->ov.OffsetHigh = offset >> 32; | |
1000 | acb->ov.hEvent = acb->hEvent; | |
1001 | acb->count = nb_sectors * 512; | |
436e15b8 | 1002 | #ifndef QEMU_TOOL |
ce1a14dc | 1003 | qemu_add_wait_object(acb->ov.hEvent, raw_aio_cb, acb); |
436e15b8 | 1004 | #endif |
ce1a14dc | 1005 | return acb; |
83f64091 FB |
1006 | } |
1007 | ||
ce1a14dc PB |
1008 | static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs, |
1009 | int64_t sector_num, uint8_t *buf, int nb_sectors, | |
1010 | BlockDriverCompletionFunc *cb, void *opaque) | |
83f64091 | 1011 | { |
83f64091 | 1012 | BDRVRawState *s = bs->opaque; |
ce1a14dc | 1013 | RawAIOCB *acb; |
83f64091 | 1014 | int ret; |
83f64091 | 1015 | |
ce1a14dc PB |
1016 | acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
1017 | if (!acb) | |
1018 | return NULL; | |
1019 | ret = ReadFile(s->hfile, buf, acb->count, NULL, &acb->ov); | |
1020 | if (!ret) { | |
1021 | qemu_aio_release(acb); | |
1022 | return NULL; | |
1023 | } | |
1024 | #ifdef QEMU_TOOL | |
1025 | qemu_aio_release(acb); | |
436e15b8 | 1026 | #endif |
ce1a14dc | 1027 | return (BlockDriverAIOCB *)acb; |
83f64091 FB |
1028 | } |
1029 | ||
ce1a14dc PB |
1030 | static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs, |
1031 | int64_t sector_num, uint8_t *buf, int nb_sectors, | |
1032 | BlockDriverCompletionFunc *cb, void *opaque) | |
83f64091 | 1033 | { |
83f64091 | 1034 | BDRVRawState *s = bs->opaque; |
ce1a14dc PB |
1035 | RawAIOCB *acb; |
1036 | int ret; | |
83f64091 | 1037 | |
ce1a14dc PB |
1038 | acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
1039 | if (!acb) | |
1040 | return NULL; | |
1041 | ret = WriteFile(s->hfile, buf, acb->count, NULL, &acb->ov); | |
1042 | if (!ret) { | |
1043 | qemu_aio_release(acb); | |
1044 | return NULL; | |
1045 | } | |
1046 | #ifdef QEMU_TOOL | |
1047 | qemu_aio_release(acb); | |
436e15b8 | 1048 | #endif |
ce1a14dc | 1049 | return (BlockDriverAIOCB *)acb; |
83f64091 FB |
1050 | } |
1051 | ||
ce1a14dc | 1052 | static void raw_aio_cancel(BlockDriverAIOCB *blockacb) |
83f64091 | 1053 | { |
ce1a14dc PB |
1054 | #ifndef QEMU_TOOL |
1055 | RawAIOCB *acb = (RawAIOCB *)blockacb; | |
1056 | BlockDriverState *bs = acb->common.bs; | |
1057 | BDRVRawState *s = bs->opaque; | |
1058 | ||
1059 | qemu_del_wait_object(acb->ov.hEvent, raw_aio_cb, acb); | |
1060 | /* XXX: if more than one async I/O it is not correct */ | |
1061 | CancelIo(s->hfile); | |
1062 | qemu_aio_release(acb); | |
1063 | #endif | |
83f64091 FB |
1064 | } |
1065 | ||
1066 | static void raw_flush(BlockDriverState *bs) | |
1067 | { | |
1068 | /* XXX: add it */ | |
1069 | } | |
1070 | ||
1071 | static void raw_close(BlockDriverState *bs) | |
1072 | { | |
1073 | BDRVRawState *s = bs->opaque; | |
1074 | CloseHandle(s->hfile); | |
1075 | } | |
1076 | ||
1077 | static int raw_truncate(BlockDriverState *bs, int64_t offset) | |
1078 | { | |
1079 | BDRVRawState *s = bs->opaque; | |
1080 | DWORD low, high; | |
1081 | ||
979b67ad FB |
1082 | low = offset; |
1083 | high = offset >> 32; | |
83f64091 FB |
1084 | if (!SetFilePointer(s->hfile, low, &high, FILE_BEGIN)) |
1085 | return -EIO; | |
1086 | if (!SetEndOfFile(s->hfile)) | |
1087 | return -EIO; | |
1088 | return 0; | |
1089 | } | |
1090 | ||
f45512fe | 1091 | static int64_t raw_getlength(BlockDriverState *bs) |
83f64091 FB |
1092 | { |
1093 | BDRVRawState *s = bs->opaque; | |
1094 | LARGE_INTEGER l; | |
19cb3738 | 1095 | ULARGE_INTEGER available, total, total_free; |
436e15b8 | 1096 | |
f45512fe | 1097 | switch(s->type) { |
19cb3738 FB |
1098 | case FTYPE_FILE: |
1099 | l.LowPart = GetFileSize(s->hfile, &l.HighPart); | |
1100 | if (l.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR) | |
1101 | return -EIO; | |
1102 | break; | |
1103 | case FTYPE_CD: | |
f45512fe | 1104 | if (!GetDiskFreeSpaceEx(s->drive_path, &available, &total, &total_free)) |
19cb3738 | 1105 | return -EIO; |
f45512fe | 1106 | l.QuadPart = total.QuadPart; |
19cb3738 FB |
1107 | break; |
1108 | default: | |
1109 | return -EIO; | |
1110 | } | |
83f64091 FB |
1111 | return l.QuadPart; |
1112 | } | |
1113 | ||
1114 | static int raw_create(const char *filename, int64_t total_size, | |
1115 | const char *backing_file, int flags) | |
1116 | { | |
1117 | int fd; | |
1118 | ||
1119 | if (flags || backing_file) | |
1120 | return -ENOTSUP; | |
1121 | ||
1122 | fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, | |
1123 | 0644); | |
1124 | if (fd < 0) | |
1125 | return -EIO; | |
1126 | set_sparse(fd); | |
1127 | ftruncate(fd, total_size * 512); | |
1128 | close(fd); | |
1129 | return 0; | |
1130 | } | |
1131 | ||
1132 | void qemu_aio_init(void) | |
1133 | { | |
1134 | } | |
1135 | ||
1136 | void qemu_aio_poll(void) | |
1137 | { | |
1138 | } | |
1139 | ||
62ee0211 TS |
1140 | void qemu_aio_flush(void) |
1141 | { | |
1142 | } | |
1143 | ||
83f64091 FB |
1144 | void qemu_aio_wait_start(void) |
1145 | { | |
1146 | } | |
1147 | ||
1148 | void qemu_aio_wait(void) | |
1149 | { | |
fd44d818 FB |
1150 | #ifndef QEMU_TOOL |
1151 | qemu_bh_poll(); | |
1152 | #endif | |
83f64091 FB |
1153 | } |
1154 | ||
1155 | void qemu_aio_wait_end(void) | |
1156 | { | |
1157 | } | |
1158 | ||
1159 | BlockDriver bdrv_raw = { | |
1160 | "raw", | |
1161 | sizeof(BDRVRawState), | |
1162 | NULL, /* no probe for protocols */ | |
1163 | raw_open, | |
1164 | NULL, | |
1165 | NULL, | |
1166 | raw_close, | |
1167 | raw_create, | |
1168 | raw_flush, | |
1169 | ||
1170 | #if 0 | |
83f64091 FB |
1171 | .bdrv_aio_read = raw_aio_read, |
1172 | .bdrv_aio_write = raw_aio_write, | |
1173 | .bdrv_aio_cancel = raw_aio_cancel, | |
ce1a14dc | 1174 | .aiocb_size = sizeof(RawAIOCB); |
83f64091 FB |
1175 | #endif |
1176 | .protocol_name = "file", | |
1177 | .bdrv_pread = raw_pread, | |
1178 | .bdrv_pwrite = raw_pwrite, | |
1179 | .bdrv_truncate = raw_truncate, | |
1180 | .bdrv_getlength = raw_getlength, | |
1181 | }; | |
19cb3738 FB |
1182 | |
1183 | /***********************************************/ | |
1184 | /* host device */ | |
1185 | ||
1186 | static int find_cdrom(char *cdrom_name, int cdrom_name_size) | |
1187 | { | |
1188 | char drives[256], *pdrv = drives; | |
1189 | UINT type; | |
1190 | ||
f45512fe | 1191 | memset(drives, 0, sizeof(drives)); |
19cb3738 FB |
1192 | GetLogicalDriveStrings(sizeof(drives), drives); |
1193 | while(pdrv[0] != '\0') { | |
1194 | type = GetDriveType(pdrv); | |
1195 | switch(type) { | |
1196 | case DRIVE_CDROM: | |
1197 | snprintf(cdrom_name, cdrom_name_size, "\\\\.\\%c:", pdrv[0]); | |
1198 | return 0; | |
1199 | break; | |
1200 | } | |
1201 | pdrv += lstrlen(pdrv) + 1; | |
1202 | } | |
1203 | return -1; | |
1204 | } | |
1205 | ||
f45512fe | 1206 | static int find_device_type(BlockDriverState *bs, const char *filename) |
19cb3738 | 1207 | { |
f45512fe | 1208 | BDRVRawState *s = bs->opaque; |
19cb3738 FB |
1209 | UINT type; |
1210 | const char *p; | |
1211 | ||
1212 | if (strstart(filename, "\\\\.\\", &p) || | |
1213 | strstart(filename, "//./", &p)) { | |
f45512fe FB |
1214 | snprintf(s->drive_path, sizeof(s->drive_path), "%c:\\", p[0]); |
1215 | type = GetDriveType(s->drive_path); | |
19cb3738 FB |
1216 | if (type == DRIVE_CDROM) |
1217 | return FTYPE_CD; | |
1218 | else | |
1219 | return FTYPE_FILE; | |
1220 | } else { | |
1221 | return FTYPE_FILE; | |
1222 | } | |
1223 | } | |
1224 | ||
1225 | static int hdev_open(BlockDriverState *bs, const char *filename, int flags) | |
1226 | { | |
1227 | BDRVRawState *s = bs->opaque; | |
1228 | int access_flags, create_flags; | |
1229 | DWORD overlapped; | |
1230 | char device_name[64]; | |
19cb3738 FB |
1231 | |
1232 | if (strstart(filename, "/dev/cdrom", NULL)) { | |
1233 | if (find_cdrom(device_name, sizeof(device_name)) < 0) | |
1234 | return -ENOENT; | |
1235 | filename = device_name; | |
1236 | } else { | |
1237 | /* transform drive letters into device name */ | |
1238 | if (((filename[0] >= 'a' && filename[0] <= 'z') || | |
1239 | (filename[0] >= 'A' && filename[0] <= 'Z')) && | |
1240 | filename[1] == ':' && filename[2] == '\0') { | |
1241 | snprintf(device_name, sizeof(device_name), "\\\\.\\%c:", filename[0]); | |
1242 | filename = device_name; | |
1243 | } | |
1244 | } | |
f45512fe | 1245 | s->type = find_device_type(bs, filename); |
19cb3738 FB |
1246 | |
1247 | if ((flags & BDRV_O_ACCESS) == O_RDWR) { | |
1248 | access_flags = GENERIC_READ | GENERIC_WRITE; | |
1249 | } else { | |
1250 | access_flags = GENERIC_READ; | |
1251 | } | |
1252 | create_flags = OPEN_EXISTING; | |
1253 | ||
1254 | #ifdef QEMU_TOOL | |
1255 | overlapped = 0; | |
1256 | #else | |
1257 | overlapped = FILE_FLAG_OVERLAPPED; | |
1258 | #endif | |
1259 | s->hfile = CreateFile(filename, access_flags, | |
1260 | FILE_SHARE_READ, NULL, | |
1261 | create_flags, overlapped, 0); | |
1262 | if (s->hfile == INVALID_HANDLE_VALUE) | |
1263 | return -1; | |
1264 | return 0; | |
1265 | } | |
1266 | ||
1267 | #if 0 | |
1268 | /***********************************************/ | |
1269 | /* removable device additionnal commands */ | |
1270 | ||
1271 | static int raw_is_inserted(BlockDriverState *bs) | |
1272 | { | |
1273 | return 1; | |
1274 | } | |
1275 | ||
1276 | static int raw_media_changed(BlockDriverState *bs) | |
1277 | { | |
1278 | return -ENOTSUP; | |
1279 | } | |
1280 | ||
1281 | static int raw_eject(BlockDriverState *bs, int eject_flag) | |
1282 | { | |
1283 | DWORD ret_count; | |
1284 | ||
1285 | if (s->type == FTYPE_FILE) | |
1286 | return -ENOTSUP; | |
1287 | if (eject_flag) { | |
1288 | DeviceIoControl(s->hfile, IOCTL_STORAGE_EJECT_MEDIA, | |
1289 | NULL, 0, NULL, 0, &lpBytesReturned, NULL); | |
1290 | } else { | |
1291 | DeviceIoControl(s->hfile, IOCTL_STORAGE_LOAD_MEDIA, | |
1292 | NULL, 0, NULL, 0, &lpBytesReturned, NULL); | |
1293 | } | |
1294 | } | |
1295 | ||
1296 | static int raw_set_locked(BlockDriverState *bs, int locked) | |
1297 | { | |
1298 | return -ENOTSUP; | |
1299 | } | |
1300 | #endif | |
1301 | ||
1302 | BlockDriver bdrv_host_device = { | |
1303 | "host_device", | |
1304 | sizeof(BDRVRawState), | |
1305 | NULL, /* no probe for protocols */ | |
1306 | hdev_open, | |
1307 | NULL, | |
1308 | NULL, | |
1309 | raw_close, | |
1310 | NULL, | |
1311 | raw_flush, | |
1312 | ||
1313 | #if 0 | |
1314 | .bdrv_aio_read = raw_aio_read, | |
1315 | .bdrv_aio_write = raw_aio_write, | |
1316 | .bdrv_aio_cancel = raw_aio_cancel, | |
1317 | .aiocb_size = sizeof(RawAIOCB); | |
1318 | #endif | |
1319 | .bdrv_pread = raw_pread, | |
1320 | .bdrv_pwrite = raw_pwrite, | |
1321 | .bdrv_getlength = raw_getlength, | |
1322 | }; | |
83f64091 | 1323 | #endif /* _WIN32 */ |