]>
Commit | Line | Data |
---|---|---|
83f64091 | 1 | /* |
223d4670 | 2 | * Block driver for RAW files (posix) |
5fafdf24 | 3 | * |
83f64091 | 4 | * Copyright (c) 2006 Fabrice Bellard |
5fafdf24 | 5 | * |
83f64091 FB |
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 | */ | |
faf07963 | 24 | #include "qemu-common.h" |
87ecb68b | 25 | #include "qemu-timer.h" |
baf35cb9 | 26 | #include "qemu-char.h" |
83f64091 FB |
27 | #include "block_int.h" |
28 | #include <assert.h> | |
414f0dab | 29 | #ifdef CONFIG_AIO |
3c529d93 | 30 | #include "posix-aio-compat.h" |
414f0dab | 31 | #endif |
83f64091 | 32 | |
83f64091 FB |
33 | #ifdef CONFIG_COCOA |
34 | #include <paths.h> | |
35 | #include <sys/param.h> | |
36 | #include <IOKit/IOKitLib.h> | |
37 | #include <IOKit/IOBSD.h> | |
38 | #include <IOKit/storage/IOMediaBSDClient.h> | |
39 | #include <IOKit/storage/IOMedia.h> | |
40 | #include <IOKit/storage/IOCDMedia.h> | |
41 | //#include <IOKit/storage/IOCDTypes.h> | |
42 | #include <CoreFoundation/CoreFoundation.h> | |
43 | #endif | |
44 | ||
45 | #ifdef __sun__ | |
2e9671da TS |
46 | #define _POSIX_PTHREAD_SEMANTICS 1 |
47 | #include <signal.h> | |
83f64091 FB |
48 | #include <sys/dkio.h> |
49 | #endif | |
19cb3738 FB |
50 | #ifdef __linux__ |
51 | #include <sys/ioctl.h> | |
52 | #include <linux/cdrom.h> | |
53 | #include <linux/fd.h> | |
54 | #endif | |
1cb6c3fd | 55 | #ifdef __FreeBSD__ |
543952ca | 56 | #include <signal.h> |
1cb6c3fd TS |
57 | #include <sys/disk.h> |
58 | #endif | |
83f64091 | 59 | |
128ab2ff BS |
60 | #ifdef __OpenBSD__ |
61 | #include <sys/ioctl.h> | |
62 | #include <sys/disklabel.h> | |
63 | #include <sys/dkio.h> | |
64 | #endif | |
65 | ||
c5e97233 BS |
66 | #ifdef __DragonFly__ |
67 | #include <sys/ioctl.h> | |
68 | #include <sys/diskslice.h> | |
69 | #endif | |
70 | ||
19cb3738 | 71 | //#define DEBUG_FLOPPY |
83f64091 | 72 | |
faf07963 | 73 | //#define DEBUG_BLOCK |
03ff3ca3 | 74 | #if defined(DEBUG_BLOCK) |
93fcfe39 | 75 | #define DEBUG_BLOCK_PRINT(formatCstr, args...) do { if (qemu_log_enabled()) \ |
31b1a7b4 | 76 | { qemu_log(formatCstr, ##args); qemu_log_flush(); } } while (0) |
8c05dbf9 TS |
77 | #else |
78 | #define DEBUG_BLOCK_PRINT(formatCstr, args...) | |
79 | #endif | |
80 | ||
f6465578 AL |
81 | /* OS X does not have O_DSYNC */ |
82 | #ifndef O_DSYNC | |
7ab064d2 | 83 | #define O_DSYNC O_SYNC |
f6465578 AL |
84 | #endif |
85 | ||
9f7965c7 AL |
86 | /* Approximate O_DIRECT with O_DSYNC if O_DIRECT isn't available */ |
87 | #ifndef O_DIRECT | |
88 | #define O_DIRECT O_DSYNC | |
89 | #endif | |
90 | ||
19cb3738 FB |
91 | #define FTYPE_FILE 0 |
92 | #define FTYPE_CD 1 | |
93 | #define FTYPE_FD 2 | |
83f64091 | 94 | |
bed5cc52 FB |
95 | #define ALIGNED_BUFFER_SIZE (32 * 512) |
96 | ||
19cb3738 FB |
97 | /* if the FD is not accessed during that time (in ms), we try to |
98 | reopen it to see if the disk has been changed */ | |
99 | #define FD_OPEN_TIMEOUT 1000 | |
83f64091 | 100 | |
19cb3738 FB |
101 | typedef struct BDRVRawState { |
102 | int fd; | |
103 | int type; | |
8c05dbf9 | 104 | unsigned int lseek_err_cnt; |
19cb3738 FB |
105 | #if defined(__linux__) |
106 | /* linux floppy specific */ | |
6dd2db52 | 107 | int fd_open_flags; |
19cb3738 FB |
108 | int64_t fd_open_time; |
109 | int64_t fd_error_time; | |
110 | int fd_got_error; | |
111 | int fd_media_changed; | |
83f64091 | 112 | #endif |
bed5cc52 | 113 | uint8_t* aligned_buf; |
19cb3738 FB |
114 | } BDRVRawState; |
115 | ||
a76bab49 AL |
116 | static int posix_aio_init(void); |
117 | ||
19cb3738 | 118 | static int fd_open(BlockDriverState *bs); |
83f64091 FB |
119 | |
120 | static int raw_open(BlockDriverState *bs, const char *filename, int flags) | |
121 | { | |
122 | BDRVRawState *s = bs->opaque; | |
19cb3738 | 123 | int fd, open_flags, ret; |
83f64091 | 124 | |
a76bab49 AL |
125 | posix_aio_init(); |
126 | ||
8c05dbf9 TS |
127 | s->lseek_err_cnt = 0; |
128 | ||
83f64091 FB |
129 | open_flags = O_BINARY; |
130 | if ((flags & BDRV_O_ACCESS) == O_RDWR) { | |
131 | open_flags |= O_RDWR; | |
132 | } else { | |
133 | open_flags |= O_RDONLY; | |
134 | bs->read_only = 1; | |
135 | } | |
136 | if (flags & BDRV_O_CREAT) | |
137 | open_flags |= O_CREAT | O_TRUNC; | |
9f7965c7 AL |
138 | |
139 | /* Use O_DSYNC for write-through caching, no flags for write-back caching, | |
140 | * and O_DIRECT for no caching. */ | |
141 | if ((flags & BDRV_O_NOCACHE)) | |
33f00271 | 142 | open_flags |= O_DIRECT; |
9f7965c7 AL |
143 | else if (!(flags & BDRV_O_CACHE_WB)) |
144 | open_flags |= O_DSYNC; | |
83f64091 | 145 | |
19cb3738 FB |
146 | s->type = FTYPE_FILE; |
147 | ||
83f64091 | 148 | fd = open(filename, open_flags, 0644); |
19cb3738 FB |
149 | if (fd < 0) { |
150 | ret = -errno; | |
151 | if (ret == -EROFS) | |
152 | ret = -EACCES; | |
153 | return ret; | |
154 | } | |
83f64091 | 155 | s->fd = fd; |
bed5cc52 | 156 | s->aligned_buf = NULL; |
9f7965c7 | 157 | if ((flags & BDRV_O_NOCACHE)) { |
bed5cc52 FB |
158 | s->aligned_buf = qemu_memalign(512, ALIGNED_BUFFER_SIZE); |
159 | if (s->aligned_buf == NULL) { | |
160 | ret = -errno; | |
161 | close(fd); | |
162 | return ret; | |
163 | } | |
164 | } | |
83f64091 FB |
165 | return 0; |
166 | } | |
167 | ||
168 | /* XXX: use host sector size if necessary with: | |
169 | #ifdef DIOCGSECTORSIZE | |
170 | { | |
171 | unsigned int sectorsize = 512; | |
172 | if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) && | |
173 | sectorsize > bufsize) | |
174 | bufsize = sectorsize; | |
175 | } | |
176 | #endif | |
177 | #ifdef CONFIG_COCOA | |
178 | u_int32_t blockSize = 512; | |
179 | if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) { | |
180 | bufsize = blockSize; | |
181 | } | |
182 | #endif | |
183 | */ | |
184 | ||
bed5cc52 FB |
185 | /* |
186 | * offset and count are in bytes, but must be multiples of 512 for files | |
187 | * opened with O_DIRECT. buf must be aligned to 512 bytes then. | |
188 | * | |
189 | * This function may be called without alignment if the caller ensures | |
190 | * that O_DIRECT is not in effect. | |
191 | */ | |
192 | static int raw_pread_aligned(BlockDriverState *bs, int64_t offset, | |
83f64091 FB |
193 | uint8_t *buf, int count) |
194 | { | |
195 | BDRVRawState *s = bs->opaque; | |
196 | int ret; | |
3b46e624 | 197 | |
19cb3738 FB |
198 | ret = fd_open(bs); |
199 | if (ret < 0) | |
200 | return ret; | |
201 | ||
985a03b0 | 202 | if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
8c05dbf9 TS |
203 | ++(s->lseek_err_cnt); |
204 | if(s->lseek_err_cnt <= 10) { | |
92868412 JM |
205 | DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
206 | "] lseek failed : %d = %s\n", | |
8c05dbf9 TS |
207 | s->fd, bs->filename, offset, buf, count, |
208 | bs->total_sectors, errno, strerror(errno)); | |
209 | } | |
210 | return -1; | |
211 | } | |
212 | s->lseek_err_cnt=0; | |
213 | ||
83f64091 | 214 | ret = read(s->fd, buf, count); |
8c05dbf9 TS |
215 | if (ret == count) |
216 | goto label__raw_read__success; | |
217 | ||
92868412 JM |
218 | DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
219 | "] read failed %d : %d = %s\n", | |
8c05dbf9 TS |
220 | s->fd, bs->filename, offset, buf, count, |
221 | bs->total_sectors, ret, errno, strerror(errno)); | |
222 | ||
223 | /* Try harder for CDrom. */ | |
224 | if (bs->type == BDRV_TYPE_CDROM) { | |
225 | lseek(s->fd, offset, SEEK_SET); | |
226 | ret = read(s->fd, buf, count); | |
227 | if (ret == count) | |
228 | goto label__raw_read__success; | |
229 | lseek(s->fd, offset, SEEK_SET); | |
230 | ret = read(s->fd, buf, count); | |
231 | if (ret == count) | |
232 | goto label__raw_read__success; | |
233 | ||
92868412 JM |
234 | DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
235 | "] retry read failed %d : %d = %s\n", | |
8c05dbf9 TS |
236 | s->fd, bs->filename, offset, buf, count, |
237 | bs->total_sectors, ret, errno, strerror(errno)); | |
238 | } | |
239 | ||
8c05dbf9 TS |
240 | label__raw_read__success: |
241 | ||
83f64091 FB |
242 | return ret; |
243 | } | |
244 | ||
bed5cc52 FB |
245 | /* |
246 | * offset and count are in bytes, but must be multiples of 512 for files | |
247 | * opened with O_DIRECT. buf must be aligned to 512 bytes then. | |
248 | * | |
249 | * This function may be called without alignment if the caller ensures | |
250 | * that O_DIRECT is not in effect. | |
251 | */ | |
252 | static int raw_pwrite_aligned(BlockDriverState *bs, int64_t offset, | |
83f64091 FB |
253 | const uint8_t *buf, int count) |
254 | { | |
255 | BDRVRawState *s = bs->opaque; | |
256 | int ret; | |
3b46e624 | 257 | |
19cb3738 FB |
258 | ret = fd_open(bs); |
259 | if (ret < 0) | |
4141d4c2 | 260 | return -errno; |
19cb3738 | 261 | |
985a03b0 | 262 | if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
8c05dbf9 TS |
263 | ++(s->lseek_err_cnt); |
264 | if(s->lseek_err_cnt) { | |
92868412 JM |
265 | DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" |
266 | PRId64 "] lseek failed : %d = %s\n", | |
8c05dbf9 TS |
267 | s->fd, bs->filename, offset, buf, count, |
268 | bs->total_sectors, errno, strerror(errno)); | |
269 | } | |
4141d4c2 | 270 | return -EIO; |
8c05dbf9 TS |
271 | } |
272 | s->lseek_err_cnt = 0; | |
273 | ||
83f64091 | 274 | ret = write(s->fd, buf, count); |
8c05dbf9 TS |
275 | if (ret == count) |
276 | goto label__raw_write__success; | |
277 | ||
92868412 JM |
278 | DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
279 | "] write failed %d : %d = %s\n", | |
8c05dbf9 TS |
280 | s->fd, bs->filename, offset, buf, count, |
281 | bs->total_sectors, ret, errno, strerror(errno)); | |
282 | ||
8c05dbf9 TS |
283 | label__raw_write__success: |
284 | ||
4141d4c2 | 285 | return (ret < 0) ? -errno : ret; |
83f64091 FB |
286 | } |
287 | ||
bed5cc52 | 288 | |
bed5cc52 FB |
289 | /* |
290 | * offset and count are in bytes and possibly not aligned. For files opened | |
291 | * with O_DIRECT, necessary alignments are ensured before calling | |
292 | * raw_pread_aligned to do the actual read. | |
293 | */ | |
294 | static int raw_pread(BlockDriverState *bs, int64_t offset, | |
295 | uint8_t *buf, int count) | |
296 | { | |
297 | BDRVRawState *s = bs->opaque; | |
298 | int size, ret, shift, sum; | |
299 | ||
300 | sum = 0; | |
301 | ||
302 | if (s->aligned_buf != NULL) { | |
303 | ||
304 | if (offset & 0x1ff) { | |
305 | /* align offset on a 512 bytes boundary */ | |
306 | ||
307 | shift = offset & 0x1ff; | |
308 | size = (shift + count + 0x1ff) & ~0x1ff; | |
309 | if (size > ALIGNED_BUFFER_SIZE) | |
310 | size = ALIGNED_BUFFER_SIZE; | |
311 | ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, size); | |
312 | if (ret < 0) | |
313 | return ret; | |
314 | ||
315 | size = 512 - shift; | |
316 | if (size > count) | |
317 | size = count; | |
318 | memcpy(buf, s->aligned_buf + shift, size); | |
319 | ||
320 | buf += size; | |
321 | offset += size; | |
322 | count -= size; | |
323 | sum += size; | |
324 | ||
325 | if (count == 0) | |
326 | return sum; | |
327 | } | |
328 | if (count & 0x1ff || (uintptr_t) buf & 0x1ff) { | |
329 | ||
330 | /* read on aligned buffer */ | |
331 | ||
332 | while (count) { | |
333 | ||
334 | size = (count + 0x1ff) & ~0x1ff; | |
335 | if (size > ALIGNED_BUFFER_SIZE) | |
336 | size = ALIGNED_BUFFER_SIZE; | |
337 | ||
338 | ret = raw_pread_aligned(bs, offset, s->aligned_buf, size); | |
339 | if (ret < 0) | |
340 | return ret; | |
341 | ||
342 | size = ret; | |
343 | if (size > count) | |
344 | size = count; | |
345 | ||
346 | memcpy(buf, s->aligned_buf, size); | |
347 | ||
348 | buf += size; | |
349 | offset += size; | |
350 | count -= size; | |
351 | sum += size; | |
352 | } | |
353 | ||
354 | return sum; | |
355 | } | |
356 | } | |
357 | ||
358 | return raw_pread_aligned(bs, offset, buf, count) + sum; | |
359 | } | |
360 | ||
361 | /* | |
362 | * offset and count are in bytes and possibly not aligned. For files opened | |
363 | * with O_DIRECT, necessary alignments are ensured before calling | |
364 | * raw_pwrite_aligned to do the actual write. | |
365 | */ | |
366 | static int raw_pwrite(BlockDriverState *bs, int64_t offset, | |
367 | const uint8_t *buf, int count) | |
368 | { | |
369 | BDRVRawState *s = bs->opaque; | |
370 | int size, ret, shift, sum; | |
371 | ||
372 | sum = 0; | |
373 | ||
374 | if (s->aligned_buf != NULL) { | |
375 | ||
376 | if (offset & 0x1ff) { | |
377 | /* align offset on a 512 bytes boundary */ | |
378 | shift = offset & 0x1ff; | |
379 | ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, 512); | |
380 | if (ret < 0) | |
381 | return ret; | |
382 | ||
383 | size = 512 - shift; | |
384 | if (size > count) | |
385 | size = count; | |
386 | memcpy(s->aligned_buf + shift, buf, size); | |
387 | ||
388 | ret = raw_pwrite_aligned(bs, offset - shift, s->aligned_buf, 512); | |
389 | if (ret < 0) | |
390 | return ret; | |
391 | ||
392 | buf += size; | |
393 | offset += size; | |
394 | count -= size; | |
395 | sum += size; | |
396 | ||
397 | if (count == 0) | |
398 | return sum; | |
399 | } | |
400 | if (count & 0x1ff || (uintptr_t) buf & 0x1ff) { | |
401 | ||
402 | while ((size = (count & ~0x1ff)) != 0) { | |
403 | ||
404 | if (size > ALIGNED_BUFFER_SIZE) | |
405 | size = ALIGNED_BUFFER_SIZE; | |
406 | ||
407 | memcpy(s->aligned_buf, buf, size); | |
408 | ||
409 | ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, size); | |
410 | if (ret < 0) | |
411 | return ret; | |
412 | ||
413 | buf += ret; | |
414 | offset += ret; | |
415 | count -= ret; | |
416 | sum += ret; | |
417 | } | |
418 | /* here, count < 512 because (count & ~0x1ff) == 0 */ | |
419 | if (count) { | |
420 | ret = raw_pread_aligned(bs, offset, s->aligned_buf, 512); | |
421 | if (ret < 0) | |
422 | return ret; | |
423 | memcpy(s->aligned_buf, buf, count); | |
424 | ||
425 | ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, 512); | |
426 | if (ret < 0) | |
427 | return ret; | |
428 | if (count < ret) | |
429 | ret = count; | |
430 | ||
431 | sum += ret; | |
432 | } | |
433 | return sum; | |
434 | } | |
435 | } | |
436 | return raw_pwrite_aligned(bs, offset, buf, count) + sum; | |
437 | } | |
438 | ||
414f0dab | 439 | #ifdef CONFIG_AIO |
83f64091 | 440 | /***********************************************************/ |
19cb3738 | 441 | /* Unix AIO using POSIX AIO */ |
83f64091 FB |
442 | |
443 | typedef struct RawAIOCB { | |
ce1a14dc | 444 | BlockDriverAIOCB common; |
3c529d93 | 445 | struct qemu_paiocb aiocb; |
ce1a14dc | 446 | struct RawAIOCB *next; |
bed5cc52 | 447 | int ret; |
83f64091 FB |
448 | } RawAIOCB; |
449 | ||
a76bab49 AL |
450 | typedef struct PosixAioState |
451 | { | |
9e472e10 | 452 | int rfd, wfd; |
a76bab49 AL |
453 | RawAIOCB *first_aio; |
454 | } PosixAioState; | |
83f64091 | 455 | |
a76bab49 | 456 | static void posix_aio_read(void *opaque) |
83f64091 | 457 | { |
a76bab49 | 458 | PosixAioState *s = opaque; |
ce1a14dc | 459 | RawAIOCB *acb, **pacb; |
83f64091 | 460 | int ret; |
9e472e10 AL |
461 | ssize_t len; |
462 | ||
e20e830b AL |
463 | /* read all bytes from signal pipe */ |
464 | for (;;) { | |
465 | char bytes[16]; | |
9e472e10 | 466 | |
e20e830b | 467 | len = read(s->rfd, bytes, sizeof(bytes)); |
2c41a5f9 | 468 | if (len == -1 && errno == EINTR) |
e20e830b AL |
469 | continue; /* try again */ |
470 | if (len == sizeof(bytes)) | |
471 | continue; /* more to read */ | |
472 | break; | |
473 | } | |
83f64091 FB |
474 | |
475 | for(;;) { | |
a76bab49 | 476 | pacb = &s->first_aio; |
83f64091 FB |
477 | for(;;) { |
478 | acb = *pacb; | |
479 | if (!acb) | |
480 | goto the_end; | |
3c529d93 | 481 | ret = qemu_paio_error(&acb->aiocb); |
83f64091 FB |
482 | if (ret == ECANCELED) { |
483 | /* remove the request */ | |
ce1a14dc PB |
484 | *pacb = acb->next; |
485 | qemu_aio_release(acb); | |
83f64091 FB |
486 | } else if (ret != EINPROGRESS) { |
487 | /* end of aio */ | |
488 | if (ret == 0) { | |
3c529d93 | 489 | ret = qemu_paio_return(&acb->aiocb); |
ce1a14dc | 490 | if (ret == acb->aiocb.aio_nbytes) |
83f64091 FB |
491 | ret = 0; |
492 | else | |
19cb3738 | 493 | ret = -EINVAL; |
83f64091 FB |
494 | } else { |
495 | ret = -ret; | |
496 | } | |
497 | /* remove the request */ | |
ce1a14dc | 498 | *pacb = acb->next; |
83f64091 | 499 | /* call the callback */ |
ce1a14dc PB |
500 | acb->common.cb(acb->common.opaque, ret); |
501 | qemu_aio_release(acb); | |
83f64091 FB |
502 | break; |
503 | } else { | |
ce1a14dc | 504 | pacb = &acb->next; |
83f64091 FB |
505 | } |
506 | } | |
507 | } | |
508 | the_end: ; | |
509 | } | |
510 | ||
a76bab49 | 511 | static int posix_aio_flush(void *opaque) |
baf35cb9 | 512 | { |
a76bab49 AL |
513 | PosixAioState *s = opaque; |
514 | return !!s->first_aio; | |
515 | } | |
516 | ||
517 | static PosixAioState *posix_aio_state; | |
baf35cb9 | 518 | |
9e472e10 AL |
519 | static void aio_signal_handler(int signum) |
520 | { | |
521 | if (posix_aio_state) { | |
522 | char byte = 0; | |
523 | ||
524 | write(posix_aio_state->wfd, &byte, sizeof(byte)); | |
525 | } | |
526 | ||
527 | qemu_service_io(); | |
528 | } | |
529 | ||
a76bab49 AL |
530 | static int posix_aio_init(void) |
531 | { | |
9e472e10 | 532 | struct sigaction act; |
a76bab49 | 533 | PosixAioState *s; |
9e472e10 | 534 | int fds[2]; |
3c529d93 | 535 | struct qemu_paioinit ai; |
a76bab49 AL |
536 | |
537 | if (posix_aio_state) | |
538 | return 0; | |
ad02ad6f | 539 | |
a76bab49 | 540 | s = qemu_malloc(sizeof(PosixAioState)); |
baf35cb9 | 541 | |
9e472e10 AL |
542 | sigfillset(&act.sa_mask); |
543 | act.sa_flags = 0; /* do not restart syscalls to interrupt select() */ | |
544 | act.sa_handler = aio_signal_handler; | |
545 | sigaction(SIGUSR2, &act, NULL); | |
546 | ||
a76bab49 | 547 | s->first_aio = NULL; |
9e472e10 AL |
548 | if (pipe(fds) == -1) { |
549 | fprintf(stderr, "failed to create pipe\n"); | |
27463101 AL |
550 | return -errno; |
551 | } | |
2c41a5f9 | 552 | |
9e472e10 AL |
553 | s->rfd = fds[0]; |
554 | s->wfd = fds[1]; | |
555 | ||
e20e830b | 556 | fcntl(s->rfd, F_SETFL, O_NONBLOCK); |
9e472e10 | 557 | fcntl(s->wfd, F_SETFL, O_NONBLOCK); |
2c41a5f9 | 558 | |
9e472e10 | 559 | qemu_aio_set_fd_handler(s->rfd, posix_aio_read, NULL, posix_aio_flush, s); |
baf35cb9 | 560 | |
3c529d93 AL |
561 | memset(&ai, 0, sizeof(ai)); |
562 | ai.aio_threads = 64; | |
563 | ai.aio_num = 64; | |
564 | qemu_paio_init(&ai); | |
acce87f9 | 565 | |
a76bab49 | 566 | posix_aio_state = s; |
6eb5733a | 567 | |
a76bab49 | 568 | return 0; |
83f64091 FB |
569 | } |
570 | ||
ce1a14dc PB |
571 | static RawAIOCB *raw_aio_setup(BlockDriverState *bs, |
572 | int64_t sector_num, uint8_t *buf, int nb_sectors, | |
573 | BlockDriverCompletionFunc *cb, void *opaque) | |
83f64091 | 574 | { |
ce1a14dc PB |
575 | BDRVRawState *s = bs->opaque; |
576 | RawAIOCB *acb; | |
577 | ||
19cb3738 FB |
578 | if (fd_open(bs) < 0) |
579 | return NULL; | |
580 | ||
ce1a14dc PB |
581 | acb = qemu_aio_get(bs, cb, opaque); |
582 | if (!acb) | |
583 | return NULL; | |
3c529d93 | 584 | acb->aiocb.aio_fildes = s->fd; |
55f11ca3 | 585 | acb->aiocb.ev_signo = SIGUSR2; |
ce1a14dc | 586 | acb->aiocb.aio_buf = buf; |
985a03b0 TS |
587 | if (nb_sectors < 0) |
588 | acb->aiocb.aio_nbytes = -nb_sectors; | |
589 | else | |
590 | acb->aiocb.aio_nbytes = nb_sectors * 512; | |
ce1a14dc | 591 | acb->aiocb.aio_offset = sector_num * 512; |
a76bab49 AL |
592 | acb->next = posix_aio_state->first_aio; |
593 | posix_aio_state->first_aio = acb; | |
ce1a14dc | 594 | return acb; |
83f64091 FB |
595 | } |
596 | ||
bed5cc52 FB |
597 | static void raw_aio_em_cb(void* opaque) |
598 | { | |
599 | RawAIOCB *acb = opaque; | |
600 | acb->common.cb(acb->common.opaque, acb->ret); | |
601 | qemu_aio_release(acb); | |
602 | } | |
bed5cc52 | 603 | |
22bf1458 AL |
604 | static void raw_aio_remove(RawAIOCB *acb) |
605 | { | |
606 | RawAIOCB **pacb; | |
607 | ||
608 | /* remove the callback from the queue */ | |
609 | pacb = &posix_aio_state->first_aio; | |
610 | for(;;) { | |
611 | if (*pacb == NULL) { | |
7a11b22e | 612 | fprintf(stderr, "raw_aio_remove: aio request not found!\n"); |
22bf1458 AL |
613 | break; |
614 | } else if (*pacb == acb) { | |
615 | *pacb = acb->next; | |
616 | qemu_aio_release(acb); | |
617 | break; | |
618 | } | |
7a11b22e | 619 | pacb = &(*pacb)->next; |
22bf1458 AL |
620 | } |
621 | } | |
622 | ||
ce1a14dc PB |
623 | static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs, |
624 | int64_t sector_num, uint8_t *buf, int nb_sectors, | |
625 | BlockDriverCompletionFunc *cb, void *opaque) | |
83f64091 | 626 | { |
ce1a14dc | 627 | RawAIOCB *acb; |
83f64091 | 628 | |
bed5cc52 FB |
629 | /* |
630 | * If O_DIRECT is used and the buffer is not aligned fall back | |
631 | * to synchronous IO. | |
632 | */ | |
bed5cc52 FB |
633 | BDRVRawState *s = bs->opaque; |
634 | ||
635 | if (unlikely(s->aligned_buf != NULL && ((uintptr_t) buf % 512))) { | |
636 | QEMUBH *bh; | |
637 | acb = qemu_aio_get(bs, cb, opaque); | |
638 | acb->ret = raw_pread(bs, 512 * sector_num, buf, 512 * nb_sectors); | |
639 | bh = qemu_bh_new(raw_aio_em_cb, acb); | |
640 | qemu_bh_schedule(bh); | |
641 | return &acb->common; | |
642 | } | |
bed5cc52 | 643 | |
ce1a14dc PB |
644 | acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
645 | if (!acb) | |
646 | return NULL; | |
3c529d93 | 647 | if (qemu_paio_read(&acb->aiocb) < 0) { |
22bf1458 | 648 | raw_aio_remove(acb); |
ce1a14dc | 649 | return NULL; |
5fafdf24 | 650 | } |
ce1a14dc | 651 | return &acb->common; |
83f64091 FB |
652 | } |
653 | ||
ce1a14dc PB |
654 | static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs, |
655 | int64_t sector_num, const uint8_t *buf, int nb_sectors, | |
656 | BlockDriverCompletionFunc *cb, void *opaque) | |
83f64091 | 657 | { |
ce1a14dc | 658 | RawAIOCB *acb; |
83f64091 | 659 | |
bed5cc52 FB |
660 | /* |
661 | * If O_DIRECT is used and the buffer is not aligned fall back | |
662 | * to synchronous IO. | |
663 | */ | |
bed5cc52 FB |
664 | BDRVRawState *s = bs->opaque; |
665 | ||
666 | if (unlikely(s->aligned_buf != NULL && ((uintptr_t) buf % 512))) { | |
667 | QEMUBH *bh; | |
668 | acb = qemu_aio_get(bs, cb, opaque); | |
669 | acb->ret = raw_pwrite(bs, 512 * sector_num, buf, 512 * nb_sectors); | |
670 | bh = qemu_bh_new(raw_aio_em_cb, acb); | |
671 | qemu_bh_schedule(bh); | |
672 | return &acb->common; | |
673 | } | |
bed5cc52 | 674 | |
ce1a14dc PB |
675 | acb = raw_aio_setup(bs, sector_num, (uint8_t*)buf, nb_sectors, cb, opaque); |
676 | if (!acb) | |
677 | return NULL; | |
3c529d93 | 678 | if (qemu_paio_write(&acb->aiocb) < 0) { |
22bf1458 | 679 | raw_aio_remove(acb); |
ce1a14dc | 680 | return NULL; |
5fafdf24 | 681 | } |
ce1a14dc | 682 | return &acb->common; |
83f64091 FB |
683 | } |
684 | ||
ce1a14dc | 685 | static void raw_aio_cancel(BlockDriverAIOCB *blockacb) |
83f64091 | 686 | { |
83f64091 | 687 | int ret; |
ce1a14dc | 688 | RawAIOCB *acb = (RawAIOCB *)blockacb; |
83f64091 | 689 | |
3c529d93 AL |
690 | ret = qemu_paio_cancel(acb->aiocb.aio_fildes, &acb->aiocb); |
691 | if (ret == QEMU_PAIO_NOTCANCELED) { | |
83f64091 FB |
692 | /* fail safe: if the aio could not be canceled, we wait for |
693 | it */ | |
3c529d93 | 694 | while (qemu_paio_error(&acb->aiocb) == EINPROGRESS); |
83f64091 FB |
695 | } |
696 | ||
22bf1458 | 697 | raw_aio_remove(acb); |
83f64091 | 698 | } |
a76bab49 AL |
699 | #else /* CONFIG_AIO */ |
700 | static int posix_aio_init(void) | |
414f0dab | 701 | { |
674a24ac | 702 | return 0; |
414f0dab | 703 | } |
414f0dab BS |
704 | #endif /* CONFIG_AIO */ |
705 | ||
53538725 | 706 | |
83f64091 FB |
707 | static void raw_close(BlockDriverState *bs) |
708 | { | |
709 | BDRVRawState *s = bs->opaque; | |
19cb3738 FB |
710 | if (s->fd >= 0) { |
711 | close(s->fd); | |
712 | s->fd = -1; | |
bed5cc52 FB |
713 | if (s->aligned_buf != NULL) |
714 | qemu_free(s->aligned_buf); | |
19cb3738 | 715 | } |
83f64091 FB |
716 | } |
717 | ||
718 | static int raw_truncate(BlockDriverState *bs, int64_t offset) | |
719 | { | |
720 | BDRVRawState *s = bs->opaque; | |
19cb3738 FB |
721 | if (s->type != FTYPE_FILE) |
722 | return -ENOTSUP; | |
83f64091 FB |
723 | if (ftruncate(s->fd, offset) < 0) |
724 | return -errno; | |
725 | return 0; | |
726 | } | |
727 | ||
128ab2ff BS |
728 | #ifdef __OpenBSD__ |
729 | static int64_t raw_getlength(BlockDriverState *bs) | |
730 | { | |
731 | BDRVRawState *s = bs->opaque; | |
732 | int fd = s->fd; | |
733 | struct stat st; | |
734 | ||
735 | if (fstat(fd, &st)) | |
736 | return -1; | |
737 | if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) { | |
738 | struct disklabel dl; | |
739 | ||
740 | if (ioctl(fd, DIOCGDINFO, &dl)) | |
741 | return -1; | |
742 | return (uint64_t)dl.d_secsize * | |
743 | dl.d_partitions[DISKPART(st.st_rdev)].p_size; | |
744 | } else | |
745 | return st.st_size; | |
746 | } | |
747 | #else /* !__OpenBSD__ */ | |
83f64091 FB |
748 | static int64_t raw_getlength(BlockDriverState *bs) |
749 | { | |
750 | BDRVRawState *s = bs->opaque; | |
751 | int fd = s->fd; | |
752 | int64_t size; | |
179a2c19 | 753 | #ifdef HOST_BSD |
83f64091 FB |
754 | struct stat sb; |
755 | #endif | |
756 | #ifdef __sun__ | |
757 | struct dk_minfo minfo; | |
758 | int rv; | |
759 | #endif | |
19cb3738 FB |
760 | int ret; |
761 | ||
762 | ret = fd_open(bs); | |
763 | if (ret < 0) | |
764 | return ret; | |
83f64091 | 765 | |
179a2c19 | 766 | #ifdef HOST_BSD |
83f64091 FB |
767 | if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) { |
768 | #ifdef DIOCGMEDIASIZE | |
769 | if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size)) | |
c5e97233 BS |
770 | #elif defined(DIOCGPART) |
771 | { | |
772 | struct partinfo pi; | |
773 | if (ioctl(fd, DIOCGPART, &pi) == 0) | |
774 | size = pi.media_size; | |
775 | else | |
776 | size = 0; | |
777 | } | |
778 | if (size == 0) | |
83f64091 FB |
779 | #endif |
780 | #ifdef CONFIG_COCOA | |
781 | size = LONG_LONG_MAX; | |
782 | #else | |
783 | size = lseek(fd, 0LL, SEEK_END); | |
784 | #endif | |
785 | } else | |
786 | #endif | |
787 | #ifdef __sun__ | |
788 | /* | |
789 | * use the DKIOCGMEDIAINFO ioctl to read the size. | |
790 | */ | |
791 | rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo ); | |
792 | if ( rv != -1 ) { | |
793 | size = minfo.dki_lbsize * minfo.dki_capacity; | |
794 | } else /* there are reports that lseek on some devices | |
795 | fails, but irc discussion said that contingency | |
796 | on contingency was overkill */ | |
797 | #endif | |
798 | { | |
799 | size = lseek(fd, 0, SEEK_END); | |
800 | } | |
83f64091 FB |
801 | return size; |
802 | } | |
128ab2ff | 803 | #endif |
83f64091 FB |
804 | |
805 | static int raw_create(const char *filename, int64_t total_size, | |
806 | const char *backing_file, int flags) | |
807 | { | |
808 | int fd; | |
809 | ||
810 | if (flags || backing_file) | |
811 | return -ENOTSUP; | |
812 | ||
5fafdf24 | 813 | fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
83f64091 FB |
814 | 0644); |
815 | if (fd < 0) | |
816 | return -EIO; | |
817 | ftruncate(fd, total_size * 512); | |
818 | close(fd); | |
819 | return 0; | |
820 | } | |
821 | ||
822 | static void raw_flush(BlockDriverState *bs) | |
823 | { | |
824 | BDRVRawState *s = bs->opaque; | |
825 | fsync(s->fd); | |
826 | } | |
827 | ||
828 | BlockDriver bdrv_raw = { | |
829 | "raw", | |
830 | sizeof(BDRVRawState), | |
831 | NULL, /* no probe for protocols */ | |
832 | raw_open, | |
833 | NULL, | |
834 | NULL, | |
835 | raw_close, | |
836 | raw_create, | |
837 | raw_flush, | |
3b46e624 | 838 | |
414f0dab | 839 | #ifdef CONFIG_AIO |
83f64091 FB |
840 | .bdrv_aio_read = raw_aio_read, |
841 | .bdrv_aio_write = raw_aio_write, | |
842 | .bdrv_aio_cancel = raw_aio_cancel, | |
ce1a14dc | 843 | .aiocb_size = sizeof(RawAIOCB), |
414f0dab | 844 | #endif |
3c529d93 | 845 | |
83f64091 FB |
846 | .bdrv_pread = raw_pread, |
847 | .bdrv_pwrite = raw_pwrite, | |
848 | .bdrv_truncate = raw_truncate, | |
849 | .bdrv_getlength = raw_getlength, | |
850 | }; | |
851 | ||
19cb3738 FB |
852 | /***********************************************/ |
853 | /* host device */ | |
854 | ||
855 | #ifdef CONFIG_COCOA | |
856 | static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ); | |
857 | static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ); | |
858 | ||
859 | kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ) | |
860 | { | |
5fafdf24 | 861 | kern_return_t kernResult; |
19cb3738 FB |
862 | mach_port_t masterPort; |
863 | CFMutableDictionaryRef classesToMatch; | |
864 | ||
865 | kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort ); | |
866 | if ( KERN_SUCCESS != kernResult ) { | |
867 | printf( "IOMasterPort returned %d\n", kernResult ); | |
868 | } | |
3b46e624 | 869 | |
5fafdf24 | 870 | classesToMatch = IOServiceMatching( kIOCDMediaClass ); |
19cb3738 FB |
871 | if ( classesToMatch == NULL ) { |
872 | printf( "IOServiceMatching returned a NULL dictionary.\n" ); | |
873 | } else { | |
874 | CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue ); | |
875 | } | |
876 | kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator ); | |
877 | if ( KERN_SUCCESS != kernResult ) | |
878 | { | |
879 | printf( "IOServiceGetMatchingServices returned %d\n", kernResult ); | |
880 | } | |
3b46e624 | 881 | |
19cb3738 FB |
882 | return kernResult; |
883 | } | |
884 | ||
885 | kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ) | |
886 | { | |
887 | io_object_t nextMedia; | |
888 | kern_return_t kernResult = KERN_FAILURE; | |
889 | *bsdPath = '\0'; | |
890 | nextMedia = IOIteratorNext( mediaIterator ); | |
891 | if ( nextMedia ) | |
892 | { | |
893 | CFTypeRef bsdPathAsCFString; | |
894 | bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 ); | |
895 | if ( bsdPathAsCFString ) { | |
896 | size_t devPathLength; | |
897 | strcpy( bsdPath, _PATH_DEV ); | |
898 | strcat( bsdPath, "r" ); | |
899 | devPathLength = strlen( bsdPath ); | |
900 | if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) { | |
901 | kernResult = KERN_SUCCESS; | |
902 | } | |
903 | CFRelease( bsdPathAsCFString ); | |
904 | } | |
905 | IOObjectRelease( nextMedia ); | |
906 | } | |
3b46e624 | 907 | |
19cb3738 FB |
908 | return kernResult; |
909 | } | |
910 | ||
911 | #endif | |
912 | ||
913 | static int hdev_open(BlockDriverState *bs, const char *filename, int flags) | |
914 | { | |
915 | BDRVRawState *s = bs->opaque; | |
3c529d93 | 916 | int fd, open_flags, ret; |
19cb3738 | 917 | |
a76bab49 AL |
918 | posix_aio_init(); |
919 | ||
19cb3738 FB |
920 | #ifdef CONFIG_COCOA |
921 | if (strstart(filename, "/dev/cdrom", NULL)) { | |
922 | kern_return_t kernResult; | |
923 | io_iterator_t mediaIterator; | |
924 | char bsdPath[ MAXPATHLEN ]; | |
925 | int fd; | |
5fafdf24 | 926 | |
19cb3738 FB |
927 | kernResult = FindEjectableCDMedia( &mediaIterator ); |
928 | kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) ); | |
3b46e624 | 929 | |
19cb3738 FB |
930 | if ( bsdPath[ 0 ] != '\0' ) { |
931 | strcat(bsdPath,"s0"); | |
932 | /* some CDs don't have a partition 0 */ | |
933 | fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE); | |
934 | if (fd < 0) { | |
935 | bsdPath[strlen(bsdPath)-1] = '1'; | |
936 | } else { | |
937 | close(fd); | |
938 | } | |
939 | filename = bsdPath; | |
940 | } | |
3b46e624 | 941 | |
19cb3738 FB |
942 | if ( mediaIterator ) |
943 | IOObjectRelease( mediaIterator ); | |
944 | } | |
945 | #endif | |
946 | open_flags = O_BINARY; | |
947 | if ((flags & BDRV_O_ACCESS) == O_RDWR) { | |
948 | open_flags |= O_RDWR; | |
949 | } else { | |
950 | open_flags |= O_RDONLY; | |
951 | bs->read_only = 1; | |
952 | } | |
9f7965c7 AL |
953 | /* Use O_DSYNC for write-through caching, no flags for write-back caching, |
954 | * and O_DIRECT for no caching. */ | |
955 | if ((flags & BDRV_O_NOCACHE)) | |
33f00271 | 956 | open_flags |= O_DIRECT; |
9f7965c7 AL |
957 | else if (!(flags & BDRV_O_CACHE_WB)) |
958 | open_flags |= O_DSYNC; | |
19cb3738 FB |
959 | |
960 | s->type = FTYPE_FILE; | |
961 | #if defined(__linux__) | |
962 | if (strstart(filename, "/dev/cd", NULL)) { | |
963 | /* open will not fail even if no CD is inserted */ | |
964 | open_flags |= O_NONBLOCK; | |
965 | s->type = FTYPE_CD; | |
966 | } else if (strstart(filename, "/dev/fd", NULL)) { | |
967 | s->type = FTYPE_FD; | |
6dd2db52 | 968 | s->fd_open_flags = open_flags; |
19cb3738 FB |
969 | /* open will not fail even if no floppy is inserted */ |
970 | open_flags |= O_NONBLOCK; | |
985a03b0 TS |
971 | } else if (strstart(filename, "/dev/sg", NULL)) { |
972 | bs->sg = 1; | |
19cb3738 FB |
973 | } |
974 | #endif | |
975 | fd = open(filename, open_flags, 0644); | |
976 | if (fd < 0) { | |
977 | ret = -errno; | |
978 | if (ret == -EROFS) | |
979 | ret = -EACCES; | |
980 | return ret; | |
981 | } | |
982 | s->fd = fd; | |
983 | #if defined(__linux__) | |
984 | /* close fd so that we can reopen it as needed */ | |
985 | if (s->type == FTYPE_FD) { | |
986 | close(s->fd); | |
987 | s->fd = -1; | |
988 | s->fd_media_changed = 1; | |
989 | } | |
990 | #endif | |
991 | return 0; | |
992 | } | |
993 | ||
03ff3ca3 | 994 | #if defined(__linux__) |
19cb3738 FB |
995 | /* Note: we do not have a reliable method to detect if the floppy is |
996 | present. The current method is to try to open the floppy at every | |
997 | I/O and to keep it opened during a few hundreds of ms. */ | |
998 | static int fd_open(BlockDriverState *bs) | |
999 | { | |
1000 | BDRVRawState *s = bs->opaque; | |
1001 | int last_media_present; | |
1002 | ||
1003 | if (s->type != FTYPE_FD) | |
1004 | return 0; | |
1005 | last_media_present = (s->fd >= 0); | |
5fafdf24 | 1006 | if (s->fd >= 0 && |
19cb3738 FB |
1007 | (qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) { |
1008 | close(s->fd); | |
1009 | s->fd = -1; | |
1010 | #ifdef DEBUG_FLOPPY | |
1011 | printf("Floppy closed\n"); | |
1012 | #endif | |
1013 | } | |
1014 | if (s->fd < 0) { | |
5fafdf24 | 1015 | if (s->fd_got_error && |
19cb3738 FB |
1016 | (qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) { |
1017 | #ifdef DEBUG_FLOPPY | |
1018 | printf("No floppy (open delayed)\n"); | |
1019 | #endif | |
1020 | return -EIO; | |
1021 | } | |
6dd2db52 | 1022 | s->fd = open(bs->filename, s->fd_open_flags); |
19cb3738 FB |
1023 | if (s->fd < 0) { |
1024 | s->fd_error_time = qemu_get_clock(rt_clock); | |
1025 | s->fd_got_error = 1; | |
1026 | if (last_media_present) | |
1027 | s->fd_media_changed = 1; | |
1028 | #ifdef DEBUG_FLOPPY | |
1029 | printf("No floppy\n"); | |
1030 | #endif | |
1031 | return -EIO; | |
1032 | } | |
1033 | #ifdef DEBUG_FLOPPY | |
1034 | printf("Floppy opened\n"); | |
1035 | #endif | |
1036 | } | |
1037 | if (!last_media_present) | |
1038 | s->fd_media_changed = 1; | |
1039 | s->fd_open_time = qemu_get_clock(rt_clock); | |
1040 | s->fd_got_error = 0; | |
1041 | return 0; | |
1042 | } | |
19cb3738 FB |
1043 | |
1044 | static int raw_is_inserted(BlockDriverState *bs) | |
1045 | { | |
1046 | BDRVRawState *s = bs->opaque; | |
1047 | int ret; | |
1048 | ||
1049 | switch(s->type) { | |
1050 | case FTYPE_CD: | |
1051 | ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); | |
1052 | if (ret == CDS_DISC_OK) | |
1053 | return 1; | |
1054 | else | |
1055 | return 0; | |
1056 | break; | |
1057 | case FTYPE_FD: | |
1058 | ret = fd_open(bs); | |
1059 | return (ret >= 0); | |
1060 | default: | |
1061 | return 1; | |
1062 | } | |
1063 | } | |
1064 | ||
1065 | /* currently only used by fdc.c, but a CD version would be good too */ | |
1066 | static int raw_media_changed(BlockDriverState *bs) | |
1067 | { | |
1068 | BDRVRawState *s = bs->opaque; | |
1069 | ||
1070 | switch(s->type) { | |
1071 | case FTYPE_FD: | |
1072 | { | |
1073 | int ret; | |
1074 | /* XXX: we do not have a true media changed indication. It | |
1075 | does not work if the floppy is changed without trying | |
1076 | to read it */ | |
1077 | fd_open(bs); | |
1078 | ret = s->fd_media_changed; | |
1079 | s->fd_media_changed = 0; | |
1080 | #ifdef DEBUG_FLOPPY | |
1081 | printf("Floppy changed=%d\n", ret); | |
1082 | #endif | |
1083 | return ret; | |
1084 | } | |
1085 | default: | |
1086 | return -ENOTSUP; | |
1087 | } | |
1088 | } | |
1089 | ||
1090 | static int raw_eject(BlockDriverState *bs, int eject_flag) | |
1091 | { | |
1092 | BDRVRawState *s = bs->opaque; | |
1093 | ||
1094 | switch(s->type) { | |
1095 | case FTYPE_CD: | |
1096 | if (eject_flag) { | |
1097 | if (ioctl (s->fd, CDROMEJECT, NULL) < 0) | |
1098 | perror("CDROMEJECT"); | |
1099 | } else { | |
1100 | if (ioctl (s->fd, CDROMCLOSETRAY, NULL) < 0) | |
1101 | perror("CDROMEJECT"); | |
1102 | } | |
1103 | break; | |
1104 | case FTYPE_FD: | |
1105 | { | |
1106 | int fd; | |
1107 | if (s->fd >= 0) { | |
1108 | close(s->fd); | |
1109 | s->fd = -1; | |
1110 | } | |
6dd2db52 | 1111 | fd = open(bs->filename, s->fd_open_flags | O_NONBLOCK); |
19cb3738 FB |
1112 | if (fd >= 0) { |
1113 | if (ioctl(fd, FDEJECT, 0) < 0) | |
1114 | perror("FDEJECT"); | |
1115 | close(fd); | |
1116 | } | |
1117 | } | |
1118 | break; | |
1119 | default: | |
1120 | return -ENOTSUP; | |
1121 | } | |
1122 | return 0; | |
1123 | } | |
1124 | ||
1125 | static int raw_set_locked(BlockDriverState *bs, int locked) | |
1126 | { | |
1127 | BDRVRawState *s = bs->opaque; | |
1128 | ||
1129 | switch(s->type) { | |
1130 | case FTYPE_CD: | |
1131 | if (ioctl (s->fd, CDROM_LOCKDOOR, locked) < 0) { | |
1132 | /* Note: an error can happen if the distribution automatically | |
1133 | mounts the CD-ROM */ | |
1134 | // perror("CDROM_LOCKDOOR"); | |
1135 | } | |
1136 | break; | |
1137 | default: | |
1138 | return -ENOTSUP; | |
1139 | } | |
1140 | return 0; | |
1141 | } | |
1142 | ||
985a03b0 TS |
1143 | static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
1144 | { | |
1145 | BDRVRawState *s = bs->opaque; | |
1146 | ||
1147 | return ioctl(s->fd, req, buf); | |
1148 | } | |
19cb3738 FB |
1149 | #else |
1150 | ||
08af02e2 AL |
1151 | static int fd_open(BlockDriverState *bs) |
1152 | { | |
1153 | return 0; | |
1154 | } | |
1155 | ||
19cb3738 FB |
1156 | static int raw_is_inserted(BlockDriverState *bs) |
1157 | { | |
1158 | return 1; | |
1159 | } | |
1160 | ||
1161 | static int raw_media_changed(BlockDriverState *bs) | |
1162 | { | |
1163 | return -ENOTSUP; | |
1164 | } | |
1165 | ||
1166 | static int raw_eject(BlockDriverState *bs, int eject_flag) | |
1167 | { | |
1168 | return -ENOTSUP; | |
1169 | } | |
1170 | ||
1171 | static int raw_set_locked(BlockDriverState *bs, int locked) | |
1172 | { | |
1173 | return -ENOTSUP; | |
1174 | } | |
1175 | ||
985a03b0 TS |
1176 | static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
1177 | { | |
1178 | return -ENOTSUP; | |
1179 | } | |
19cb3738 FB |
1180 | #endif /* !linux */ |
1181 | ||
1182 | BlockDriver bdrv_host_device = { | |
e60f469c AJ |
1183 | .format_name = "host_device", |
1184 | .instance_size = sizeof(BDRVRawState), | |
1185 | .bdrv_open = hdev_open, | |
1186 | .bdrv_close = raw_close, | |
1187 | .bdrv_flush = raw_flush, | |
3b46e624 | 1188 | |
414f0dab | 1189 | #ifdef CONFIG_AIO |
e60f469c AJ |
1190 | .bdrv_aio_read = raw_aio_read, |
1191 | .bdrv_aio_write = raw_aio_write, | |
1192 | .bdrv_aio_cancel = raw_aio_cancel, | |
1193 | .aiocb_size = sizeof(RawAIOCB), | |
414f0dab | 1194 | #endif |
3c529d93 | 1195 | |
e60f469c AJ |
1196 | .bdrv_pread = raw_pread, |
1197 | .bdrv_pwrite = raw_pwrite, | |
1198 | .bdrv_getlength = raw_getlength, | |
19cb3738 FB |
1199 | |
1200 | /* removable device support */ | |
e60f469c AJ |
1201 | .bdrv_is_inserted = raw_is_inserted, |
1202 | .bdrv_media_changed = raw_media_changed, | |
1203 | .bdrv_eject = raw_eject, | |
1204 | .bdrv_set_locked = raw_set_locked, | |
985a03b0 | 1205 | /* generic scsi device */ |
e60f469c | 1206 | .bdrv_ioctl = raw_ioctl, |
19cb3738 | 1207 | }; |