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Commit | Line | Data |
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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 | ||
19cb3738 | 66 | //#define DEBUG_FLOPPY |
83f64091 | 67 | |
faf07963 | 68 | //#define DEBUG_BLOCK |
03ff3ca3 | 69 | #if defined(DEBUG_BLOCK) |
93fcfe39 | 70 | #define DEBUG_BLOCK_PRINT(formatCstr, args...) do { if (qemu_log_enabled()) \ |
31b1a7b4 | 71 | { qemu_log(formatCstr, ##args); qemu_log_flush(); } } while (0) |
8c05dbf9 TS |
72 | #else |
73 | #define DEBUG_BLOCK_PRINT(formatCstr, args...) | |
74 | #endif | |
75 | ||
f6465578 AL |
76 | /* OS X does not have O_DSYNC */ |
77 | #ifndef O_DSYNC | |
960b6463 | 78 | #ifdef O_SYNC |
7ab064d2 | 79 | #define O_DSYNC O_SYNC |
960b6463 | 80 | #elif defined(O_FSYNC) |
81 | #define O_DSYNC O_FSYNC | |
82 | #endif | |
f6465578 AL |
83 | #endif |
84 | ||
9f7965c7 AL |
85 | /* Approximate O_DIRECT with O_DSYNC if O_DIRECT isn't available */ |
86 | #ifndef O_DIRECT | |
87 | #define O_DIRECT O_DSYNC | |
88 | #endif | |
89 | ||
19cb3738 FB |
90 | #define FTYPE_FILE 0 |
91 | #define FTYPE_CD 1 | |
92 | #define FTYPE_FD 2 | |
83f64091 | 93 | |
bed5cc52 FB |
94 | #define ALIGNED_BUFFER_SIZE (32 * 512) |
95 | ||
19cb3738 FB |
96 | /* if the FD is not accessed during that time (in ms), we try to |
97 | reopen it to see if the disk has been changed */ | |
98 | #define FD_OPEN_TIMEOUT 1000 | |
83f64091 | 99 | |
19cb3738 FB |
100 | typedef struct BDRVRawState { |
101 | int fd; | |
102 | int type; | |
8c05dbf9 | 103 | unsigned int lseek_err_cnt; |
19cb3738 FB |
104 | #if defined(__linux__) |
105 | /* linux floppy specific */ | |
6dd2db52 | 106 | int fd_open_flags; |
19cb3738 FB |
107 | int64_t fd_open_time; |
108 | int64_t fd_error_time; | |
109 | int fd_got_error; | |
110 | int fd_media_changed; | |
83f64091 | 111 | #endif |
bed5cc52 | 112 | uint8_t* aligned_buf; |
19cb3738 FB |
113 | } BDRVRawState; |
114 | ||
a76bab49 AL |
115 | static int posix_aio_init(void); |
116 | ||
19cb3738 | 117 | static int fd_open(BlockDriverState *bs); |
83f64091 FB |
118 | |
119 | static int raw_open(BlockDriverState *bs, const char *filename, int flags) | |
120 | { | |
121 | BDRVRawState *s = bs->opaque; | |
19cb3738 | 122 | int fd, open_flags, ret; |
83f64091 | 123 | |
a76bab49 AL |
124 | posix_aio_init(); |
125 | ||
8c05dbf9 TS |
126 | s->lseek_err_cnt = 0; |
127 | ||
83f64091 FB |
128 | open_flags = O_BINARY; |
129 | if ((flags & BDRV_O_ACCESS) == O_RDWR) { | |
130 | open_flags |= O_RDWR; | |
131 | } else { | |
132 | open_flags |= O_RDONLY; | |
133 | bs->read_only = 1; | |
134 | } | |
135 | if (flags & BDRV_O_CREAT) | |
136 | open_flags |= O_CREAT | O_TRUNC; | |
9f7965c7 AL |
137 | |
138 | /* Use O_DSYNC for write-through caching, no flags for write-back caching, | |
139 | * and O_DIRECT for no caching. */ | |
140 | if ((flags & BDRV_O_NOCACHE)) | |
33f00271 | 141 | open_flags |= O_DIRECT; |
9f7965c7 AL |
142 | else if (!(flags & BDRV_O_CACHE_WB)) |
143 | open_flags |= O_DSYNC; | |
83f64091 | 144 | |
19cb3738 FB |
145 | s->type = FTYPE_FILE; |
146 | ||
83f64091 | 147 | fd = open(filename, open_flags, 0644); |
19cb3738 FB |
148 | if (fd < 0) { |
149 | ret = -errno; | |
150 | if (ret == -EROFS) | |
151 | ret = -EACCES; | |
152 | return ret; | |
153 | } | |
83f64091 | 154 | s->fd = fd; |
bed5cc52 | 155 | s->aligned_buf = NULL; |
9f7965c7 | 156 | if ((flags & BDRV_O_NOCACHE)) { |
bed5cc52 FB |
157 | s->aligned_buf = qemu_memalign(512, ALIGNED_BUFFER_SIZE); |
158 | if (s->aligned_buf == NULL) { | |
159 | ret = -errno; | |
160 | close(fd); | |
161 | return ret; | |
162 | } | |
163 | } | |
83f64091 FB |
164 | return 0; |
165 | } | |
166 | ||
167 | /* XXX: use host sector size if necessary with: | |
168 | #ifdef DIOCGSECTORSIZE | |
169 | { | |
170 | unsigned int sectorsize = 512; | |
171 | if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) && | |
172 | sectorsize > bufsize) | |
173 | bufsize = sectorsize; | |
174 | } | |
175 | #endif | |
176 | #ifdef CONFIG_COCOA | |
177 | u_int32_t blockSize = 512; | |
178 | if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) { | |
179 | bufsize = blockSize; | |
180 | } | |
181 | #endif | |
182 | */ | |
183 | ||
bed5cc52 FB |
184 | /* |
185 | * offset and count are in bytes, but must be multiples of 512 for files | |
186 | * opened with O_DIRECT. buf must be aligned to 512 bytes then. | |
187 | * | |
188 | * This function may be called without alignment if the caller ensures | |
189 | * that O_DIRECT is not in effect. | |
190 | */ | |
191 | static int raw_pread_aligned(BlockDriverState *bs, int64_t offset, | |
83f64091 FB |
192 | uint8_t *buf, int count) |
193 | { | |
194 | BDRVRawState *s = bs->opaque; | |
195 | int ret; | |
3b46e624 | 196 | |
19cb3738 FB |
197 | ret = fd_open(bs); |
198 | if (ret < 0) | |
199 | return ret; | |
200 | ||
985a03b0 | 201 | if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
8c05dbf9 TS |
202 | ++(s->lseek_err_cnt); |
203 | if(s->lseek_err_cnt <= 10) { | |
92868412 JM |
204 | DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
205 | "] lseek failed : %d = %s\n", | |
8c05dbf9 TS |
206 | 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 | ||
83f64091 | 213 | ret = read(s->fd, buf, count); |
8c05dbf9 TS |
214 | if (ret == count) |
215 | goto label__raw_read__success; | |
216 | ||
92868412 JM |
217 | DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
218 | "] read failed %d : %d = %s\n", | |
8c05dbf9 TS |
219 | s->fd, bs->filename, offset, buf, count, |
220 | bs->total_sectors, ret, errno, strerror(errno)); | |
221 | ||
222 | /* Try harder for CDrom. */ | |
223 | if (bs->type == BDRV_TYPE_CDROM) { | |
224 | lseek(s->fd, offset, SEEK_SET); | |
225 | ret = read(s->fd, buf, count); | |
226 | if (ret == count) | |
227 | goto label__raw_read__success; | |
228 | lseek(s->fd, offset, SEEK_SET); | |
229 | ret = read(s->fd, buf, count); | |
230 | if (ret == count) | |
231 | goto label__raw_read__success; | |
232 | ||
92868412 JM |
233 | DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
234 | "] retry read failed %d : %d = %s\n", | |
8c05dbf9 TS |
235 | s->fd, bs->filename, offset, buf, count, |
236 | bs->total_sectors, ret, errno, strerror(errno)); | |
237 | } | |
238 | ||
8c05dbf9 TS |
239 | label__raw_read__success: |
240 | ||
5982abd9 | 241 | return (ret < 0) ? -errno : ret; |
83f64091 FB |
242 | } |
243 | ||
bed5cc52 FB |
244 | /* |
245 | * offset and count are in bytes, but must be multiples of 512 for files | |
246 | * opened with O_DIRECT. buf must be aligned to 512 bytes then. | |
247 | * | |
248 | * This function may be called without alignment if the caller ensures | |
249 | * that O_DIRECT is not in effect. | |
250 | */ | |
251 | static int raw_pwrite_aligned(BlockDriverState *bs, int64_t offset, | |
83f64091 FB |
252 | const uint8_t *buf, int count) |
253 | { | |
254 | BDRVRawState *s = bs->opaque; | |
255 | int ret; | |
3b46e624 | 256 | |
19cb3738 FB |
257 | ret = fd_open(bs); |
258 | if (ret < 0) | |
4141d4c2 | 259 | return -errno; |
19cb3738 | 260 | |
985a03b0 | 261 | if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
8c05dbf9 TS |
262 | ++(s->lseek_err_cnt); |
263 | if(s->lseek_err_cnt) { | |
92868412 JM |
264 | DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" |
265 | PRId64 "] lseek failed : %d = %s\n", | |
8c05dbf9 TS |
266 | s->fd, bs->filename, offset, buf, count, |
267 | bs->total_sectors, errno, strerror(errno)); | |
268 | } | |
4141d4c2 | 269 | return -EIO; |
8c05dbf9 TS |
270 | } |
271 | s->lseek_err_cnt = 0; | |
272 | ||
83f64091 | 273 | ret = write(s->fd, buf, count); |
8c05dbf9 TS |
274 | if (ret == count) |
275 | goto label__raw_write__success; | |
276 | ||
92868412 JM |
277 | DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
278 | "] write failed %d : %d = %s\n", | |
8c05dbf9 TS |
279 | s->fd, bs->filename, offset, buf, count, |
280 | bs->total_sectors, ret, errno, strerror(errno)); | |
281 | ||
8c05dbf9 TS |
282 | label__raw_write__success: |
283 | ||
4141d4c2 | 284 | return (ret < 0) ? -errno : ret; |
83f64091 FB |
285 | } |
286 | ||
bed5cc52 | 287 | |
bed5cc52 FB |
288 | /* |
289 | * offset and count are in bytes and possibly not aligned. For files opened | |
290 | * with O_DIRECT, necessary alignments are ensured before calling | |
291 | * raw_pread_aligned to do the actual read. | |
292 | */ | |
293 | static int raw_pread(BlockDriverState *bs, int64_t offset, | |
294 | uint8_t *buf, int count) | |
295 | { | |
296 | BDRVRawState *s = bs->opaque; | |
297 | int size, ret, shift, sum; | |
298 | ||
299 | sum = 0; | |
300 | ||
301 | if (s->aligned_buf != NULL) { | |
302 | ||
303 | if (offset & 0x1ff) { | |
304 | /* align offset on a 512 bytes boundary */ | |
305 | ||
306 | shift = offset & 0x1ff; | |
307 | size = (shift + count + 0x1ff) & ~0x1ff; | |
308 | if (size > ALIGNED_BUFFER_SIZE) | |
309 | size = ALIGNED_BUFFER_SIZE; | |
310 | ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, size); | |
311 | if (ret < 0) | |
312 | return ret; | |
313 | ||
314 | size = 512 - shift; | |
315 | if (size > count) | |
316 | size = count; | |
317 | memcpy(buf, s->aligned_buf + shift, size); | |
318 | ||
319 | buf += size; | |
320 | offset += size; | |
321 | count -= size; | |
322 | sum += size; | |
323 | ||
324 | if (count == 0) | |
325 | return sum; | |
326 | } | |
327 | if (count & 0x1ff || (uintptr_t) buf & 0x1ff) { | |
328 | ||
329 | /* read on aligned buffer */ | |
330 | ||
331 | while (count) { | |
332 | ||
333 | size = (count + 0x1ff) & ~0x1ff; | |
334 | if (size > ALIGNED_BUFFER_SIZE) | |
335 | size = ALIGNED_BUFFER_SIZE; | |
336 | ||
337 | ret = raw_pread_aligned(bs, offset, s->aligned_buf, size); | |
338 | if (ret < 0) | |
339 | return ret; | |
340 | ||
341 | size = ret; | |
342 | if (size > count) | |
343 | size = count; | |
344 | ||
345 | memcpy(buf, s->aligned_buf, size); | |
346 | ||
347 | buf += size; | |
348 | offset += size; | |
349 | count -= size; | |
350 | sum += size; | |
351 | } | |
352 | ||
353 | return sum; | |
354 | } | |
355 | } | |
356 | ||
357 | return raw_pread_aligned(bs, offset, buf, count) + sum; | |
358 | } | |
359 | ||
360 | /* | |
361 | * offset and count are in bytes and possibly not aligned. For files opened | |
362 | * with O_DIRECT, necessary alignments are ensured before calling | |
363 | * raw_pwrite_aligned to do the actual write. | |
364 | */ | |
365 | static int raw_pwrite(BlockDriverState *bs, int64_t offset, | |
366 | const uint8_t *buf, int count) | |
367 | { | |
368 | BDRVRawState *s = bs->opaque; | |
369 | int size, ret, shift, sum; | |
370 | ||
371 | sum = 0; | |
372 | ||
373 | if (s->aligned_buf != NULL) { | |
374 | ||
375 | if (offset & 0x1ff) { | |
376 | /* align offset on a 512 bytes boundary */ | |
377 | shift = offset & 0x1ff; | |
378 | ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, 512); | |
379 | if (ret < 0) | |
380 | return ret; | |
381 | ||
382 | size = 512 - shift; | |
383 | if (size > count) | |
384 | size = count; | |
385 | memcpy(s->aligned_buf + shift, buf, size); | |
386 | ||
387 | ret = raw_pwrite_aligned(bs, offset - shift, s->aligned_buf, 512); | |
388 | if (ret < 0) | |
389 | return ret; | |
390 | ||
391 | buf += size; | |
392 | offset += size; | |
393 | count -= size; | |
394 | sum += size; | |
395 | ||
396 | if (count == 0) | |
397 | return sum; | |
398 | } | |
399 | if (count & 0x1ff || (uintptr_t) buf & 0x1ff) { | |
400 | ||
401 | while ((size = (count & ~0x1ff)) != 0) { | |
402 | ||
403 | if (size > ALIGNED_BUFFER_SIZE) | |
404 | size = ALIGNED_BUFFER_SIZE; | |
405 | ||
406 | memcpy(s->aligned_buf, buf, size); | |
407 | ||
408 | ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, size); | |
409 | if (ret < 0) | |
410 | return ret; | |
411 | ||
412 | buf += ret; | |
413 | offset += ret; | |
414 | count -= ret; | |
415 | sum += ret; | |
416 | } | |
417 | /* here, count < 512 because (count & ~0x1ff) == 0 */ | |
418 | if (count) { | |
419 | ret = raw_pread_aligned(bs, offset, s->aligned_buf, 512); | |
420 | if (ret < 0) | |
421 | return ret; | |
422 | memcpy(s->aligned_buf, buf, count); | |
423 | ||
424 | ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, 512); | |
425 | if (ret < 0) | |
426 | return ret; | |
427 | if (count < ret) | |
428 | ret = count; | |
429 | ||
430 | sum += ret; | |
431 | } | |
432 | return sum; | |
433 | } | |
434 | } | |
435 | return raw_pwrite_aligned(bs, offset, buf, count) + sum; | |
436 | } | |
437 | ||
414f0dab | 438 | #ifdef CONFIG_AIO |
83f64091 | 439 | /***********************************************************/ |
19cb3738 | 440 | /* Unix AIO using POSIX AIO */ |
83f64091 FB |
441 | |
442 | typedef struct RawAIOCB { | |
ce1a14dc | 443 | BlockDriverAIOCB common; |
3c529d93 | 444 | struct qemu_paiocb aiocb; |
ce1a14dc | 445 | struct RawAIOCB *next; |
bed5cc52 | 446 | int ret; |
83f64091 FB |
447 | } RawAIOCB; |
448 | ||
a76bab49 AL |
449 | typedef struct PosixAioState |
450 | { | |
9e472e10 | 451 | int rfd, wfd; |
a76bab49 AL |
452 | RawAIOCB *first_aio; |
453 | } PosixAioState; | |
83f64091 | 454 | |
a76bab49 | 455 | static void posix_aio_read(void *opaque) |
83f64091 | 456 | { |
a76bab49 | 457 | PosixAioState *s = opaque; |
ce1a14dc | 458 | RawAIOCB *acb, **pacb; |
83f64091 | 459 | int ret; |
9e472e10 AL |
460 | ssize_t len; |
461 | ||
e20e830b AL |
462 | /* read all bytes from signal pipe */ |
463 | for (;;) { | |
464 | char bytes[16]; | |
9e472e10 | 465 | |
e20e830b | 466 | len = read(s->rfd, bytes, sizeof(bytes)); |
2c41a5f9 | 467 | if (len == -1 && errno == EINTR) |
e20e830b AL |
468 | continue; /* try again */ |
469 | if (len == sizeof(bytes)) | |
470 | continue; /* more to read */ | |
471 | break; | |
472 | } | |
83f64091 FB |
473 | |
474 | for(;;) { | |
a76bab49 | 475 | pacb = &s->first_aio; |
83f64091 FB |
476 | for(;;) { |
477 | acb = *pacb; | |
478 | if (!acb) | |
479 | goto the_end; | |
3c529d93 | 480 | ret = qemu_paio_error(&acb->aiocb); |
83f64091 FB |
481 | if (ret == ECANCELED) { |
482 | /* remove the request */ | |
ce1a14dc PB |
483 | *pacb = acb->next; |
484 | qemu_aio_release(acb); | |
83f64091 FB |
485 | } else if (ret != EINPROGRESS) { |
486 | /* end of aio */ | |
487 | if (ret == 0) { | |
3c529d93 | 488 | ret = qemu_paio_return(&acb->aiocb); |
ce1a14dc | 489 | if (ret == acb->aiocb.aio_nbytes) |
83f64091 FB |
490 | ret = 0; |
491 | else | |
19cb3738 | 492 | ret = -EINVAL; |
83f64091 FB |
493 | } else { |
494 | ret = -ret; | |
495 | } | |
496 | /* remove the request */ | |
ce1a14dc | 497 | *pacb = acb->next; |
83f64091 | 498 | /* call the callback */ |
ce1a14dc PB |
499 | acb->common.cb(acb->common.opaque, ret); |
500 | qemu_aio_release(acb); | |
83f64091 FB |
501 | break; |
502 | } else { | |
ce1a14dc | 503 | pacb = &acb->next; |
83f64091 FB |
504 | } |
505 | } | |
506 | } | |
507 | the_end: ; | |
508 | } | |
509 | ||
a76bab49 | 510 | static int posix_aio_flush(void *opaque) |
baf35cb9 | 511 | { |
a76bab49 AL |
512 | PosixAioState *s = opaque; |
513 | return !!s->first_aio; | |
514 | } | |
515 | ||
516 | static PosixAioState *posix_aio_state; | |
baf35cb9 | 517 | |
9e472e10 AL |
518 | static void aio_signal_handler(int signum) |
519 | { | |
520 | if (posix_aio_state) { | |
521 | char byte = 0; | |
522 | ||
523 | write(posix_aio_state->wfd, &byte, sizeof(byte)); | |
524 | } | |
525 | ||
526 | qemu_service_io(); | |
527 | } | |
528 | ||
a76bab49 AL |
529 | static int posix_aio_init(void) |
530 | { | |
9e472e10 | 531 | struct sigaction act; |
a76bab49 | 532 | PosixAioState *s; |
9e472e10 | 533 | int fds[2]; |
3c529d93 | 534 | struct qemu_paioinit ai; |
a76bab49 AL |
535 | |
536 | if (posix_aio_state) | |
537 | return 0; | |
ad02ad6f | 538 | |
a76bab49 | 539 | s = qemu_malloc(sizeof(PosixAioState)); |
baf35cb9 | 540 | |
9e472e10 AL |
541 | sigfillset(&act.sa_mask); |
542 | act.sa_flags = 0; /* do not restart syscalls to interrupt select() */ | |
543 | act.sa_handler = aio_signal_handler; | |
544 | sigaction(SIGUSR2, &act, NULL); | |
545 | ||
a76bab49 | 546 | s->first_aio = NULL; |
9e472e10 AL |
547 | if (pipe(fds) == -1) { |
548 | fprintf(stderr, "failed to create pipe\n"); | |
27463101 AL |
549 | return -errno; |
550 | } | |
2c41a5f9 | 551 | |
9e472e10 AL |
552 | s->rfd = fds[0]; |
553 | s->wfd = fds[1]; | |
554 | ||
e20e830b | 555 | fcntl(s->rfd, F_SETFL, O_NONBLOCK); |
9e472e10 | 556 | fcntl(s->wfd, F_SETFL, O_NONBLOCK); |
2c41a5f9 | 557 | |
9e472e10 | 558 | qemu_aio_set_fd_handler(s->rfd, posix_aio_read, NULL, posix_aio_flush, s); |
baf35cb9 | 559 | |
3c529d93 AL |
560 | memset(&ai, 0, sizeof(ai)); |
561 | ai.aio_threads = 64; | |
562 | ai.aio_num = 64; | |
563 | qemu_paio_init(&ai); | |
acce87f9 | 564 | |
a76bab49 | 565 | posix_aio_state = s; |
6eb5733a | 566 | |
a76bab49 | 567 | return 0; |
83f64091 FB |
568 | } |
569 | ||
ce1a14dc PB |
570 | static RawAIOCB *raw_aio_setup(BlockDriverState *bs, |
571 | int64_t sector_num, uint8_t *buf, int nb_sectors, | |
572 | BlockDriverCompletionFunc *cb, void *opaque) | |
83f64091 | 573 | { |
ce1a14dc PB |
574 | BDRVRawState *s = bs->opaque; |
575 | RawAIOCB *acb; | |
576 | ||
19cb3738 FB |
577 | if (fd_open(bs) < 0) |
578 | return NULL; | |
579 | ||
ce1a14dc PB |
580 | acb = qemu_aio_get(bs, cb, opaque); |
581 | if (!acb) | |
582 | return NULL; | |
3c529d93 | 583 | acb->aiocb.aio_fildes = s->fd; |
55f11ca3 | 584 | acb->aiocb.ev_signo = SIGUSR2; |
ce1a14dc | 585 | acb->aiocb.aio_buf = buf; |
985a03b0 TS |
586 | if (nb_sectors < 0) |
587 | acb->aiocb.aio_nbytes = -nb_sectors; | |
588 | else | |
589 | acb->aiocb.aio_nbytes = nb_sectors * 512; | |
ce1a14dc | 590 | acb->aiocb.aio_offset = sector_num * 512; |
a76bab49 AL |
591 | acb->next = posix_aio_state->first_aio; |
592 | posix_aio_state->first_aio = acb; | |
ce1a14dc | 593 | return acb; |
83f64091 FB |
594 | } |
595 | ||
bed5cc52 FB |
596 | static void raw_aio_em_cb(void* opaque) |
597 | { | |
598 | RawAIOCB *acb = opaque; | |
599 | acb->common.cb(acb->common.opaque, acb->ret); | |
600 | qemu_aio_release(acb); | |
601 | } | |
bed5cc52 | 602 | |
22bf1458 AL |
603 | static void raw_aio_remove(RawAIOCB *acb) |
604 | { | |
605 | RawAIOCB **pacb; | |
606 | ||
607 | /* remove the callback from the queue */ | |
608 | pacb = &posix_aio_state->first_aio; | |
609 | for(;;) { | |
610 | if (*pacb == NULL) { | |
7a11b22e | 611 | fprintf(stderr, "raw_aio_remove: aio request not found!\n"); |
22bf1458 AL |
612 | break; |
613 | } else if (*pacb == acb) { | |
614 | *pacb = acb->next; | |
615 | qemu_aio_release(acb); | |
616 | break; | |
617 | } | |
7a11b22e | 618 | pacb = &(*pacb)->next; |
22bf1458 AL |
619 | } |
620 | } | |
621 | ||
ce1a14dc PB |
622 | static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs, |
623 | int64_t sector_num, uint8_t *buf, int nb_sectors, | |
624 | BlockDriverCompletionFunc *cb, void *opaque) | |
83f64091 | 625 | { |
ce1a14dc | 626 | RawAIOCB *acb; |
83f64091 | 627 | |
bed5cc52 FB |
628 | /* |
629 | * If O_DIRECT is used and the buffer is not aligned fall back | |
630 | * to synchronous IO. | |
631 | */ | |
bed5cc52 FB |
632 | BDRVRawState *s = bs->opaque; |
633 | ||
634 | if (unlikely(s->aligned_buf != NULL && ((uintptr_t) buf % 512))) { | |
635 | QEMUBH *bh; | |
636 | acb = qemu_aio_get(bs, cb, opaque); | |
637 | acb->ret = raw_pread(bs, 512 * sector_num, buf, 512 * nb_sectors); | |
638 | bh = qemu_bh_new(raw_aio_em_cb, acb); | |
639 | qemu_bh_schedule(bh); | |
640 | return &acb->common; | |
641 | } | |
bed5cc52 | 642 | |
ce1a14dc PB |
643 | acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
644 | if (!acb) | |
645 | return NULL; | |
3c529d93 | 646 | if (qemu_paio_read(&acb->aiocb) < 0) { |
22bf1458 | 647 | raw_aio_remove(acb); |
ce1a14dc | 648 | return NULL; |
5fafdf24 | 649 | } |
ce1a14dc | 650 | return &acb->common; |
83f64091 FB |
651 | } |
652 | ||
ce1a14dc PB |
653 | static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs, |
654 | int64_t sector_num, const uint8_t *buf, int nb_sectors, | |
655 | BlockDriverCompletionFunc *cb, void *opaque) | |
83f64091 | 656 | { |
ce1a14dc | 657 | RawAIOCB *acb; |
83f64091 | 658 | |
bed5cc52 FB |
659 | /* |
660 | * If O_DIRECT is used and the buffer is not aligned fall back | |
661 | * to synchronous IO. | |
662 | */ | |
bed5cc52 FB |
663 | BDRVRawState *s = bs->opaque; |
664 | ||
665 | if (unlikely(s->aligned_buf != NULL && ((uintptr_t) buf % 512))) { | |
666 | QEMUBH *bh; | |
667 | acb = qemu_aio_get(bs, cb, opaque); | |
668 | acb->ret = raw_pwrite(bs, 512 * sector_num, buf, 512 * nb_sectors); | |
669 | bh = qemu_bh_new(raw_aio_em_cb, acb); | |
670 | qemu_bh_schedule(bh); | |
671 | return &acb->common; | |
672 | } | |
bed5cc52 | 673 | |
ce1a14dc PB |
674 | acb = raw_aio_setup(bs, sector_num, (uint8_t*)buf, nb_sectors, cb, opaque); |
675 | if (!acb) | |
676 | return NULL; | |
3c529d93 | 677 | if (qemu_paio_write(&acb->aiocb) < 0) { |
22bf1458 | 678 | raw_aio_remove(acb); |
ce1a14dc | 679 | return NULL; |
5fafdf24 | 680 | } |
ce1a14dc | 681 | return &acb->common; |
83f64091 FB |
682 | } |
683 | ||
ce1a14dc | 684 | static void raw_aio_cancel(BlockDriverAIOCB *blockacb) |
83f64091 | 685 | { |
83f64091 | 686 | int ret; |
ce1a14dc | 687 | RawAIOCB *acb = (RawAIOCB *)blockacb; |
83f64091 | 688 | |
3c529d93 AL |
689 | ret = qemu_paio_cancel(acb->aiocb.aio_fildes, &acb->aiocb); |
690 | if (ret == QEMU_PAIO_NOTCANCELED) { | |
83f64091 FB |
691 | /* fail safe: if the aio could not be canceled, we wait for |
692 | it */ | |
3c529d93 | 693 | while (qemu_paio_error(&acb->aiocb) == EINPROGRESS); |
83f64091 FB |
694 | } |
695 | ||
22bf1458 | 696 | raw_aio_remove(acb); |
83f64091 | 697 | } |
a76bab49 AL |
698 | #else /* CONFIG_AIO */ |
699 | static int posix_aio_init(void) | |
414f0dab | 700 | { |
674a24ac | 701 | return 0; |
414f0dab | 702 | } |
414f0dab BS |
703 | #endif /* CONFIG_AIO */ |
704 | ||
53538725 | 705 | |
83f64091 FB |
706 | static void raw_close(BlockDriverState *bs) |
707 | { | |
708 | BDRVRawState *s = bs->opaque; | |
19cb3738 FB |
709 | if (s->fd >= 0) { |
710 | close(s->fd); | |
711 | s->fd = -1; | |
bed5cc52 FB |
712 | if (s->aligned_buf != NULL) |
713 | qemu_free(s->aligned_buf); | |
19cb3738 | 714 | } |
83f64091 FB |
715 | } |
716 | ||
717 | static int raw_truncate(BlockDriverState *bs, int64_t offset) | |
718 | { | |
719 | BDRVRawState *s = bs->opaque; | |
19cb3738 FB |
720 | if (s->type != FTYPE_FILE) |
721 | return -ENOTSUP; | |
83f64091 FB |
722 | if (ftruncate(s->fd, offset) < 0) |
723 | return -errno; | |
724 | return 0; | |
725 | } | |
726 | ||
128ab2ff BS |
727 | #ifdef __OpenBSD__ |
728 | static int64_t raw_getlength(BlockDriverState *bs) | |
729 | { | |
730 | BDRVRawState *s = bs->opaque; | |
731 | int fd = s->fd; | |
732 | struct stat st; | |
733 | ||
734 | if (fstat(fd, &st)) | |
735 | return -1; | |
736 | if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) { | |
737 | struct disklabel dl; | |
738 | ||
739 | if (ioctl(fd, DIOCGDINFO, &dl)) | |
740 | return -1; | |
741 | return (uint64_t)dl.d_secsize * | |
742 | dl.d_partitions[DISKPART(st.st_rdev)].p_size; | |
743 | } else | |
744 | return st.st_size; | |
745 | } | |
746 | #else /* !__OpenBSD__ */ | |
83f64091 FB |
747 | static int64_t raw_getlength(BlockDriverState *bs) |
748 | { | |
749 | BDRVRawState *s = bs->opaque; | |
750 | int fd = s->fd; | |
751 | int64_t size; | |
752 | #ifdef _BSD | |
753 | struct stat sb; | |
754 | #endif | |
755 | #ifdef __sun__ | |
756 | struct dk_minfo minfo; | |
757 | int rv; | |
758 | #endif | |
19cb3738 FB |
759 | int ret; |
760 | ||
761 | ret = fd_open(bs); | |
762 | if (ret < 0) | |
763 | return ret; | |
83f64091 FB |
764 | |
765 | #ifdef _BSD | |
766 | if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) { | |
767 | #ifdef DIOCGMEDIASIZE | |
768 | if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size)) | |
769 | #endif | |
770 | #ifdef CONFIG_COCOA | |
771 | size = LONG_LONG_MAX; | |
772 | #else | |
773 | size = lseek(fd, 0LL, SEEK_END); | |
774 | #endif | |
775 | } else | |
776 | #endif | |
777 | #ifdef __sun__ | |
778 | /* | |
779 | * use the DKIOCGMEDIAINFO ioctl to read the size. | |
780 | */ | |
781 | rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo ); | |
782 | if ( rv != -1 ) { | |
783 | size = minfo.dki_lbsize * minfo.dki_capacity; | |
784 | } else /* there are reports that lseek on some devices | |
785 | fails, but irc discussion said that contingency | |
786 | on contingency was overkill */ | |
787 | #endif | |
788 | { | |
789 | size = lseek(fd, 0, SEEK_END); | |
790 | } | |
83f64091 FB |
791 | return size; |
792 | } | |
128ab2ff | 793 | #endif |
83f64091 FB |
794 | |
795 | static int raw_create(const char *filename, int64_t total_size, | |
796 | const char *backing_file, int flags) | |
797 | { | |
798 | int fd; | |
799 | ||
800 | if (flags || backing_file) | |
801 | return -ENOTSUP; | |
802 | ||
5fafdf24 | 803 | fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
83f64091 FB |
804 | 0644); |
805 | if (fd < 0) | |
806 | return -EIO; | |
807 | ftruncate(fd, total_size * 512); | |
808 | close(fd); | |
809 | return 0; | |
810 | } | |
811 | ||
812 | static void raw_flush(BlockDriverState *bs) | |
813 | { | |
814 | BDRVRawState *s = bs->opaque; | |
815 | fsync(s->fd); | |
816 | } | |
817 | ||
818 | BlockDriver bdrv_raw = { | |
819 | "raw", | |
820 | sizeof(BDRVRawState), | |
821 | NULL, /* no probe for protocols */ | |
822 | raw_open, | |
823 | NULL, | |
824 | NULL, | |
825 | raw_close, | |
826 | raw_create, | |
827 | raw_flush, | |
3b46e624 | 828 | |
414f0dab | 829 | #ifdef CONFIG_AIO |
83f64091 FB |
830 | .bdrv_aio_read = raw_aio_read, |
831 | .bdrv_aio_write = raw_aio_write, | |
832 | .bdrv_aio_cancel = raw_aio_cancel, | |
ce1a14dc | 833 | .aiocb_size = sizeof(RawAIOCB), |
414f0dab | 834 | #endif |
3c529d93 | 835 | |
83f64091 FB |
836 | .bdrv_pread = raw_pread, |
837 | .bdrv_pwrite = raw_pwrite, | |
838 | .bdrv_truncate = raw_truncate, | |
839 | .bdrv_getlength = raw_getlength, | |
840 | }; | |
841 | ||
19cb3738 FB |
842 | /***********************************************/ |
843 | /* host device */ | |
844 | ||
845 | #ifdef CONFIG_COCOA | |
846 | static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ); | |
847 | static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ); | |
848 | ||
849 | kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ) | |
850 | { | |
5fafdf24 | 851 | kern_return_t kernResult; |
19cb3738 FB |
852 | mach_port_t masterPort; |
853 | CFMutableDictionaryRef classesToMatch; | |
854 | ||
855 | kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort ); | |
856 | if ( KERN_SUCCESS != kernResult ) { | |
857 | printf( "IOMasterPort returned %d\n", kernResult ); | |
858 | } | |
3b46e624 | 859 | |
5fafdf24 | 860 | classesToMatch = IOServiceMatching( kIOCDMediaClass ); |
19cb3738 FB |
861 | if ( classesToMatch == NULL ) { |
862 | printf( "IOServiceMatching returned a NULL dictionary.\n" ); | |
863 | } else { | |
864 | CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue ); | |
865 | } | |
866 | kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator ); | |
867 | if ( KERN_SUCCESS != kernResult ) | |
868 | { | |
869 | printf( "IOServiceGetMatchingServices returned %d\n", kernResult ); | |
870 | } | |
3b46e624 | 871 | |
19cb3738 FB |
872 | return kernResult; |
873 | } | |
874 | ||
875 | kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ) | |
876 | { | |
877 | io_object_t nextMedia; | |
878 | kern_return_t kernResult = KERN_FAILURE; | |
879 | *bsdPath = '\0'; | |
880 | nextMedia = IOIteratorNext( mediaIterator ); | |
881 | if ( nextMedia ) | |
882 | { | |
883 | CFTypeRef bsdPathAsCFString; | |
884 | bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 ); | |
885 | if ( bsdPathAsCFString ) { | |
886 | size_t devPathLength; | |
887 | strcpy( bsdPath, _PATH_DEV ); | |
888 | strcat( bsdPath, "r" ); | |
889 | devPathLength = strlen( bsdPath ); | |
890 | if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) { | |
891 | kernResult = KERN_SUCCESS; | |
892 | } | |
893 | CFRelease( bsdPathAsCFString ); | |
894 | } | |
895 | IOObjectRelease( nextMedia ); | |
896 | } | |
3b46e624 | 897 | |
19cb3738 FB |
898 | return kernResult; |
899 | } | |
900 | ||
901 | #endif | |
902 | ||
903 | static int hdev_open(BlockDriverState *bs, const char *filename, int flags) | |
904 | { | |
905 | BDRVRawState *s = bs->opaque; | |
3c529d93 | 906 | int fd, open_flags, ret; |
19cb3738 | 907 | |
a76bab49 AL |
908 | posix_aio_init(); |
909 | ||
19cb3738 FB |
910 | #ifdef CONFIG_COCOA |
911 | if (strstart(filename, "/dev/cdrom", NULL)) { | |
912 | kern_return_t kernResult; | |
913 | io_iterator_t mediaIterator; | |
914 | char bsdPath[ MAXPATHLEN ]; | |
915 | int fd; | |
5fafdf24 | 916 | |
19cb3738 FB |
917 | kernResult = FindEjectableCDMedia( &mediaIterator ); |
918 | kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) ); | |
3b46e624 | 919 | |
19cb3738 FB |
920 | if ( bsdPath[ 0 ] != '\0' ) { |
921 | strcat(bsdPath,"s0"); | |
922 | /* some CDs don't have a partition 0 */ | |
923 | fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE); | |
924 | if (fd < 0) { | |
925 | bsdPath[strlen(bsdPath)-1] = '1'; | |
926 | } else { | |
927 | close(fd); | |
928 | } | |
929 | filename = bsdPath; | |
930 | } | |
3b46e624 | 931 | |
19cb3738 FB |
932 | if ( mediaIterator ) |
933 | IOObjectRelease( mediaIterator ); | |
934 | } | |
935 | #endif | |
936 | open_flags = O_BINARY; | |
937 | if ((flags & BDRV_O_ACCESS) == O_RDWR) { | |
938 | open_flags |= O_RDWR; | |
939 | } else { | |
940 | open_flags |= O_RDONLY; | |
941 | bs->read_only = 1; | |
942 | } | |
9f7965c7 AL |
943 | /* Use O_DSYNC for write-through caching, no flags for write-back caching, |
944 | * and O_DIRECT for no caching. */ | |
945 | if ((flags & BDRV_O_NOCACHE)) | |
33f00271 | 946 | open_flags |= O_DIRECT; |
9f7965c7 AL |
947 | else if (!(flags & BDRV_O_CACHE_WB)) |
948 | open_flags |= O_DSYNC; | |
19cb3738 FB |
949 | |
950 | s->type = FTYPE_FILE; | |
951 | #if defined(__linux__) | |
952 | if (strstart(filename, "/dev/cd", NULL)) { | |
953 | /* open will not fail even if no CD is inserted */ | |
954 | open_flags |= O_NONBLOCK; | |
955 | s->type = FTYPE_CD; | |
956 | } else if (strstart(filename, "/dev/fd", NULL)) { | |
957 | s->type = FTYPE_FD; | |
6dd2db52 | 958 | s->fd_open_flags = open_flags; |
19cb3738 FB |
959 | /* open will not fail even if no floppy is inserted */ |
960 | open_flags |= O_NONBLOCK; | |
985a03b0 TS |
961 | } else if (strstart(filename, "/dev/sg", NULL)) { |
962 | bs->sg = 1; | |
19cb3738 FB |
963 | } |
964 | #endif | |
965 | fd = open(filename, open_flags, 0644); | |
966 | if (fd < 0) { | |
967 | ret = -errno; | |
968 | if (ret == -EROFS) | |
969 | ret = -EACCES; | |
970 | return ret; | |
971 | } | |
972 | s->fd = fd; | |
973 | #if defined(__linux__) | |
974 | /* close fd so that we can reopen it as needed */ | |
975 | if (s->type == FTYPE_FD) { | |
976 | close(s->fd); | |
977 | s->fd = -1; | |
978 | s->fd_media_changed = 1; | |
979 | } | |
980 | #endif | |
981 | return 0; | |
982 | } | |
983 | ||
03ff3ca3 | 984 | #if defined(__linux__) |
19cb3738 FB |
985 | /* Note: we do not have a reliable method to detect if the floppy is |
986 | present. The current method is to try to open the floppy at every | |
987 | I/O and to keep it opened during a few hundreds of ms. */ | |
988 | static int fd_open(BlockDriverState *bs) | |
989 | { | |
990 | BDRVRawState *s = bs->opaque; | |
991 | int last_media_present; | |
992 | ||
993 | if (s->type != FTYPE_FD) | |
994 | return 0; | |
995 | last_media_present = (s->fd >= 0); | |
5fafdf24 | 996 | if (s->fd >= 0 && |
19cb3738 FB |
997 | (qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) { |
998 | close(s->fd); | |
999 | s->fd = -1; | |
1000 | #ifdef DEBUG_FLOPPY | |
1001 | printf("Floppy closed\n"); | |
1002 | #endif | |
1003 | } | |
1004 | if (s->fd < 0) { | |
5fafdf24 | 1005 | if (s->fd_got_error && |
19cb3738 FB |
1006 | (qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) { |
1007 | #ifdef DEBUG_FLOPPY | |
1008 | printf("No floppy (open delayed)\n"); | |
1009 | #endif | |
1010 | return -EIO; | |
1011 | } | |
6dd2db52 | 1012 | s->fd = open(bs->filename, s->fd_open_flags); |
19cb3738 FB |
1013 | if (s->fd < 0) { |
1014 | s->fd_error_time = qemu_get_clock(rt_clock); | |
1015 | s->fd_got_error = 1; | |
1016 | if (last_media_present) | |
1017 | s->fd_media_changed = 1; | |
1018 | #ifdef DEBUG_FLOPPY | |
1019 | printf("No floppy\n"); | |
1020 | #endif | |
1021 | return -EIO; | |
1022 | } | |
1023 | #ifdef DEBUG_FLOPPY | |
1024 | printf("Floppy opened\n"); | |
1025 | #endif | |
1026 | } | |
1027 | if (!last_media_present) | |
1028 | s->fd_media_changed = 1; | |
1029 | s->fd_open_time = qemu_get_clock(rt_clock); | |
1030 | s->fd_got_error = 0; | |
1031 | return 0; | |
1032 | } | |
19cb3738 FB |
1033 | |
1034 | static int raw_is_inserted(BlockDriverState *bs) | |
1035 | { | |
1036 | BDRVRawState *s = bs->opaque; | |
1037 | int ret; | |
1038 | ||
1039 | switch(s->type) { | |
1040 | case FTYPE_CD: | |
1041 | ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); | |
1042 | if (ret == CDS_DISC_OK) | |
1043 | return 1; | |
1044 | else | |
1045 | return 0; | |
1046 | break; | |
1047 | case FTYPE_FD: | |
1048 | ret = fd_open(bs); | |
1049 | return (ret >= 0); | |
1050 | default: | |
1051 | return 1; | |
1052 | } | |
1053 | } | |
1054 | ||
1055 | /* currently only used by fdc.c, but a CD version would be good too */ | |
1056 | static int raw_media_changed(BlockDriverState *bs) | |
1057 | { | |
1058 | BDRVRawState *s = bs->opaque; | |
1059 | ||
1060 | switch(s->type) { | |
1061 | case FTYPE_FD: | |
1062 | { | |
1063 | int ret; | |
1064 | /* XXX: we do not have a true media changed indication. It | |
1065 | does not work if the floppy is changed without trying | |
1066 | to read it */ | |
1067 | fd_open(bs); | |
1068 | ret = s->fd_media_changed; | |
1069 | s->fd_media_changed = 0; | |
1070 | #ifdef DEBUG_FLOPPY | |
1071 | printf("Floppy changed=%d\n", ret); | |
1072 | #endif | |
1073 | return ret; | |
1074 | } | |
1075 | default: | |
1076 | return -ENOTSUP; | |
1077 | } | |
1078 | } | |
1079 | ||
1080 | static int raw_eject(BlockDriverState *bs, int eject_flag) | |
1081 | { | |
1082 | BDRVRawState *s = bs->opaque; | |
1083 | ||
1084 | switch(s->type) { | |
1085 | case FTYPE_CD: | |
1086 | if (eject_flag) { | |
1087 | if (ioctl (s->fd, CDROMEJECT, NULL) < 0) | |
1088 | perror("CDROMEJECT"); | |
1089 | } else { | |
1090 | if (ioctl (s->fd, CDROMCLOSETRAY, NULL) < 0) | |
1091 | perror("CDROMEJECT"); | |
1092 | } | |
1093 | break; | |
1094 | case FTYPE_FD: | |
1095 | { | |
1096 | int fd; | |
1097 | if (s->fd >= 0) { | |
1098 | close(s->fd); | |
1099 | s->fd = -1; | |
1100 | } | |
6dd2db52 | 1101 | fd = open(bs->filename, s->fd_open_flags | O_NONBLOCK); |
19cb3738 FB |
1102 | if (fd >= 0) { |
1103 | if (ioctl(fd, FDEJECT, 0) < 0) | |
1104 | perror("FDEJECT"); | |
1105 | close(fd); | |
1106 | } | |
1107 | } | |
1108 | break; | |
1109 | default: | |
1110 | return -ENOTSUP; | |
1111 | } | |
1112 | return 0; | |
1113 | } | |
1114 | ||
1115 | static int raw_set_locked(BlockDriverState *bs, int locked) | |
1116 | { | |
1117 | BDRVRawState *s = bs->opaque; | |
1118 | ||
1119 | switch(s->type) { | |
1120 | case FTYPE_CD: | |
1121 | if (ioctl (s->fd, CDROM_LOCKDOOR, locked) < 0) { | |
1122 | /* Note: an error can happen if the distribution automatically | |
1123 | mounts the CD-ROM */ | |
1124 | // perror("CDROM_LOCKDOOR"); | |
1125 | } | |
1126 | break; | |
1127 | default: | |
1128 | return -ENOTSUP; | |
1129 | } | |
1130 | return 0; | |
1131 | } | |
1132 | ||
985a03b0 TS |
1133 | static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
1134 | { | |
1135 | BDRVRawState *s = bs->opaque; | |
1136 | ||
1137 | return ioctl(s->fd, req, buf); | |
1138 | } | |
19cb3738 FB |
1139 | #else |
1140 | ||
08af02e2 AL |
1141 | static int fd_open(BlockDriverState *bs) |
1142 | { | |
1143 | return 0; | |
1144 | } | |
1145 | ||
19cb3738 FB |
1146 | static int raw_is_inserted(BlockDriverState *bs) |
1147 | { | |
1148 | return 1; | |
1149 | } | |
1150 | ||
1151 | static int raw_media_changed(BlockDriverState *bs) | |
1152 | { | |
1153 | return -ENOTSUP; | |
1154 | } | |
1155 | ||
1156 | static int raw_eject(BlockDriverState *bs, int eject_flag) | |
1157 | { | |
1158 | return -ENOTSUP; | |
1159 | } | |
1160 | ||
1161 | static int raw_set_locked(BlockDriverState *bs, int locked) | |
1162 | { | |
1163 | return -ENOTSUP; | |
1164 | } | |
1165 | ||
985a03b0 TS |
1166 | static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
1167 | { | |
1168 | return -ENOTSUP; | |
1169 | } | |
19cb3738 FB |
1170 | #endif /* !linux */ |
1171 | ||
1172 | BlockDriver bdrv_host_device = { | |
1173 | "host_device", | |
1174 | sizeof(BDRVRawState), | |
1175 | NULL, /* no probe for protocols */ | |
1176 | hdev_open, | |
1177 | NULL, | |
1178 | NULL, | |
1179 | raw_close, | |
1180 | NULL, | |
1181 | raw_flush, | |
3b46e624 | 1182 | |
414f0dab | 1183 | #ifdef CONFIG_AIO |
19cb3738 FB |
1184 | .bdrv_aio_read = raw_aio_read, |
1185 | .bdrv_aio_write = raw_aio_write, | |
1186 | .bdrv_aio_cancel = raw_aio_cancel, | |
1187 | .aiocb_size = sizeof(RawAIOCB), | |
414f0dab | 1188 | #endif |
3c529d93 | 1189 | |
19cb3738 FB |
1190 | .bdrv_pread = raw_pread, |
1191 | .bdrv_pwrite = raw_pwrite, | |
1192 | .bdrv_getlength = raw_getlength, | |
1193 | ||
1194 | /* removable device support */ | |
1195 | .bdrv_is_inserted = raw_is_inserted, | |
1196 | .bdrv_media_changed = raw_media_changed, | |
1197 | .bdrv_eject = raw_eject, | |
1198 | .bdrv_set_locked = raw_set_locked, | |
985a03b0 TS |
1199 | /* generic scsi device */ |
1200 | .bdrv_ioctl = raw_ioctl, | |
19cb3738 | 1201 | }; |