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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 |
83f64091 | 30 | #include <aio.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) |
a50a6282 | 70 | #define DEBUG_BLOCK_PRINT(formatCstr, args...) do { if (loglevel != 0) \ |
2e03286b | 71 | { fprintf(logfile, formatCstr, ##args); fflush(logfile); } } while (0) |
8c05dbf9 TS |
72 | #else |
73 | #define DEBUG_BLOCK_PRINT(formatCstr, args...) | |
74 | #endif | |
75 | ||
19cb3738 FB |
76 | #define FTYPE_FILE 0 |
77 | #define FTYPE_CD 1 | |
78 | #define FTYPE_FD 2 | |
83f64091 | 79 | |
bed5cc52 FB |
80 | #define ALIGNED_BUFFER_SIZE (32 * 512) |
81 | ||
19cb3738 FB |
82 | /* if the FD is not accessed during that time (in ms), we try to |
83 | reopen it to see if the disk has been changed */ | |
84 | #define FD_OPEN_TIMEOUT 1000 | |
83f64091 | 85 | |
53538725 AL |
86 | /* posix-aio doesn't allow multiple outstanding requests to a single file |
87 | * descriptor. we implement a pool of dup()'d file descriptors to work | |
88 | * around this */ | |
89 | #define RAW_FD_POOL_SIZE 64 | |
90 | ||
19cb3738 FB |
91 | typedef struct BDRVRawState { |
92 | int fd; | |
93 | int type; | |
8c05dbf9 | 94 | unsigned int lseek_err_cnt; |
53538725 | 95 | int fd_pool[RAW_FD_POOL_SIZE]; |
19cb3738 FB |
96 | #if defined(__linux__) |
97 | /* linux floppy specific */ | |
6dd2db52 | 98 | int fd_open_flags; |
19cb3738 FB |
99 | int64_t fd_open_time; |
100 | int64_t fd_error_time; | |
101 | int fd_got_error; | |
102 | int fd_media_changed; | |
83f64091 | 103 | #endif |
03ff3ca3 | 104 | #if defined(O_DIRECT) |
bed5cc52 FB |
105 | uint8_t* aligned_buf; |
106 | #endif | |
19cb3738 FB |
107 | } BDRVRawState; |
108 | ||
a76bab49 AL |
109 | static int posix_aio_init(void); |
110 | ||
19cb3738 | 111 | static int fd_open(BlockDriverState *bs); |
83f64091 FB |
112 | |
113 | static int raw_open(BlockDriverState *bs, const char *filename, int flags) | |
114 | { | |
115 | BDRVRawState *s = bs->opaque; | |
19cb3738 | 116 | int fd, open_flags, ret; |
53538725 | 117 | int i; |
83f64091 | 118 | |
a76bab49 AL |
119 | posix_aio_init(); |
120 | ||
8c05dbf9 TS |
121 | s->lseek_err_cnt = 0; |
122 | ||
83f64091 FB |
123 | open_flags = O_BINARY; |
124 | if ((flags & BDRV_O_ACCESS) == O_RDWR) { | |
125 | open_flags |= O_RDWR; | |
126 | } else { | |
127 | open_flags |= O_RDONLY; | |
128 | bs->read_only = 1; | |
129 | } | |
130 | if (flags & BDRV_O_CREAT) | |
131 | open_flags |= O_CREAT | O_TRUNC; | |
33f00271 AZ |
132 | #ifdef O_DIRECT |
133 | if (flags & BDRV_O_DIRECT) | |
134 | open_flags |= O_DIRECT; | |
135 | #endif | |
83f64091 | 136 | |
19cb3738 FB |
137 | s->type = FTYPE_FILE; |
138 | ||
83f64091 | 139 | fd = open(filename, open_flags, 0644); |
19cb3738 FB |
140 | if (fd < 0) { |
141 | ret = -errno; | |
142 | if (ret == -EROFS) | |
143 | ret = -EACCES; | |
144 | return ret; | |
145 | } | |
83f64091 | 146 | s->fd = fd; |
53538725 AL |
147 | for (i = 0; i < RAW_FD_POOL_SIZE; i++) |
148 | s->fd_pool[i] = -1; | |
03ff3ca3 | 149 | #if defined(O_DIRECT) |
bed5cc52 FB |
150 | s->aligned_buf = NULL; |
151 | if (flags & BDRV_O_DIRECT) { | |
152 | s->aligned_buf = qemu_memalign(512, ALIGNED_BUFFER_SIZE); | |
153 | if (s->aligned_buf == NULL) { | |
154 | ret = -errno; | |
155 | close(fd); | |
156 | return ret; | |
157 | } | |
158 | } | |
159 | #endif | |
83f64091 FB |
160 | return 0; |
161 | } | |
162 | ||
163 | /* XXX: use host sector size if necessary with: | |
164 | #ifdef DIOCGSECTORSIZE | |
165 | { | |
166 | unsigned int sectorsize = 512; | |
167 | if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) && | |
168 | sectorsize > bufsize) | |
169 | bufsize = sectorsize; | |
170 | } | |
171 | #endif | |
172 | #ifdef CONFIG_COCOA | |
173 | u_int32_t blockSize = 512; | |
174 | if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) { | |
175 | bufsize = blockSize; | |
176 | } | |
177 | #endif | |
178 | */ | |
179 | ||
bed5cc52 FB |
180 | /* |
181 | * offset and count are in bytes, but must be multiples of 512 for files | |
182 | * opened with O_DIRECT. buf must be aligned to 512 bytes then. | |
183 | * | |
184 | * This function may be called without alignment if the caller ensures | |
185 | * that O_DIRECT is not in effect. | |
186 | */ | |
187 | static int raw_pread_aligned(BlockDriverState *bs, int64_t offset, | |
83f64091 FB |
188 | uint8_t *buf, int count) |
189 | { | |
190 | BDRVRawState *s = bs->opaque; | |
191 | int ret; | |
3b46e624 | 192 | |
19cb3738 FB |
193 | ret = fd_open(bs); |
194 | if (ret < 0) | |
195 | return ret; | |
196 | ||
985a03b0 | 197 | if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
8c05dbf9 TS |
198 | ++(s->lseek_err_cnt); |
199 | if(s->lseek_err_cnt <= 10) { | |
92868412 JM |
200 | DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
201 | "] lseek failed : %d = %s\n", | |
8c05dbf9 TS |
202 | s->fd, bs->filename, offset, buf, count, |
203 | bs->total_sectors, errno, strerror(errno)); | |
204 | } | |
205 | return -1; | |
206 | } | |
207 | s->lseek_err_cnt=0; | |
208 | ||
83f64091 | 209 | ret = read(s->fd, buf, count); |
8c05dbf9 TS |
210 | if (ret == count) |
211 | goto label__raw_read__success; | |
212 | ||
92868412 JM |
213 | DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
214 | "] read failed %d : %d = %s\n", | |
8c05dbf9 TS |
215 | s->fd, bs->filename, offset, buf, count, |
216 | bs->total_sectors, ret, errno, strerror(errno)); | |
217 | ||
218 | /* Try harder for CDrom. */ | |
219 | if (bs->type == BDRV_TYPE_CDROM) { | |
220 | lseek(s->fd, offset, SEEK_SET); | |
221 | ret = read(s->fd, buf, count); | |
222 | if (ret == count) | |
223 | goto label__raw_read__success; | |
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 | ||
92868412 JM |
229 | DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
230 | "] retry read failed %d : %d = %s\n", | |
8c05dbf9 TS |
231 | s->fd, bs->filename, offset, buf, count, |
232 | bs->total_sectors, ret, errno, strerror(errno)); | |
233 | } | |
234 | ||
8c05dbf9 TS |
235 | label__raw_read__success: |
236 | ||
83f64091 FB |
237 | return ret; |
238 | } | |
239 | ||
bed5cc52 FB |
240 | /* |
241 | * offset and count are in bytes, but must be multiples of 512 for files | |
242 | * opened with O_DIRECT. buf must be aligned to 512 bytes then. | |
243 | * | |
244 | * This function may be called without alignment if the caller ensures | |
245 | * that O_DIRECT is not in effect. | |
246 | */ | |
247 | static int raw_pwrite_aligned(BlockDriverState *bs, int64_t offset, | |
83f64091 FB |
248 | const uint8_t *buf, int count) |
249 | { | |
250 | BDRVRawState *s = bs->opaque; | |
251 | int ret; | |
3b46e624 | 252 | |
19cb3738 FB |
253 | ret = fd_open(bs); |
254 | if (ret < 0) | |
255 | return ret; | |
256 | ||
985a03b0 | 257 | if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
8c05dbf9 TS |
258 | ++(s->lseek_err_cnt); |
259 | if(s->lseek_err_cnt) { | |
92868412 JM |
260 | DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" |
261 | PRId64 "] lseek failed : %d = %s\n", | |
8c05dbf9 TS |
262 | s->fd, bs->filename, offset, buf, count, |
263 | bs->total_sectors, errno, strerror(errno)); | |
264 | } | |
265 | return -1; | |
266 | } | |
267 | s->lseek_err_cnt = 0; | |
268 | ||
83f64091 | 269 | ret = write(s->fd, buf, count); |
8c05dbf9 TS |
270 | if (ret == count) |
271 | goto label__raw_write__success; | |
272 | ||
92868412 JM |
273 | DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
274 | "] write failed %d : %d = %s\n", | |
8c05dbf9 TS |
275 | s->fd, bs->filename, offset, buf, count, |
276 | bs->total_sectors, ret, errno, strerror(errno)); | |
277 | ||
8c05dbf9 TS |
278 | label__raw_write__success: |
279 | ||
83f64091 FB |
280 | return ret; |
281 | } | |
282 | ||
bed5cc52 | 283 | |
03ff3ca3 | 284 | #if defined(O_DIRECT) |
bed5cc52 FB |
285 | /* |
286 | * offset and count are in bytes and possibly not aligned. For files opened | |
287 | * with O_DIRECT, necessary alignments are ensured before calling | |
288 | * raw_pread_aligned to do the actual read. | |
289 | */ | |
290 | static int raw_pread(BlockDriverState *bs, int64_t offset, | |
291 | uint8_t *buf, int count) | |
292 | { | |
293 | BDRVRawState *s = bs->opaque; | |
294 | int size, ret, shift, sum; | |
295 | ||
296 | sum = 0; | |
297 | ||
298 | if (s->aligned_buf != NULL) { | |
299 | ||
300 | if (offset & 0x1ff) { | |
301 | /* align offset on a 512 bytes boundary */ | |
302 | ||
303 | shift = offset & 0x1ff; | |
304 | size = (shift + count + 0x1ff) & ~0x1ff; | |
305 | if (size > ALIGNED_BUFFER_SIZE) | |
306 | size = ALIGNED_BUFFER_SIZE; | |
307 | ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, size); | |
308 | if (ret < 0) | |
309 | return ret; | |
310 | ||
311 | size = 512 - shift; | |
312 | if (size > count) | |
313 | size = count; | |
314 | memcpy(buf, s->aligned_buf + shift, size); | |
315 | ||
316 | buf += size; | |
317 | offset += size; | |
318 | count -= size; | |
319 | sum += size; | |
320 | ||
321 | if (count == 0) | |
322 | return sum; | |
323 | } | |
324 | if (count & 0x1ff || (uintptr_t) buf & 0x1ff) { | |
325 | ||
326 | /* read on aligned buffer */ | |
327 | ||
328 | while (count) { | |
329 | ||
330 | size = (count + 0x1ff) & ~0x1ff; | |
331 | if (size > ALIGNED_BUFFER_SIZE) | |
332 | size = ALIGNED_BUFFER_SIZE; | |
333 | ||
334 | ret = raw_pread_aligned(bs, offset, s->aligned_buf, size); | |
335 | if (ret < 0) | |
336 | return ret; | |
337 | ||
338 | size = ret; | |
339 | if (size > count) | |
340 | size = count; | |
341 | ||
342 | memcpy(buf, s->aligned_buf, size); | |
343 | ||
344 | buf += size; | |
345 | offset += size; | |
346 | count -= size; | |
347 | sum += size; | |
348 | } | |
349 | ||
350 | return sum; | |
351 | } | |
352 | } | |
353 | ||
354 | return raw_pread_aligned(bs, offset, buf, count) + sum; | |
355 | } | |
356 | ||
357 | /* | |
358 | * offset and count are in bytes and possibly not aligned. For files opened | |
359 | * with O_DIRECT, necessary alignments are ensured before calling | |
360 | * raw_pwrite_aligned to do the actual write. | |
361 | */ | |
362 | static int raw_pwrite(BlockDriverState *bs, int64_t offset, | |
363 | const uint8_t *buf, int count) | |
364 | { | |
365 | BDRVRawState *s = bs->opaque; | |
366 | int size, ret, shift, sum; | |
367 | ||
368 | sum = 0; | |
369 | ||
370 | if (s->aligned_buf != NULL) { | |
371 | ||
372 | if (offset & 0x1ff) { | |
373 | /* align offset on a 512 bytes boundary */ | |
374 | shift = offset & 0x1ff; | |
375 | ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, 512); | |
376 | if (ret < 0) | |
377 | return ret; | |
378 | ||
379 | size = 512 - shift; | |
380 | if (size > count) | |
381 | size = count; | |
382 | memcpy(s->aligned_buf + shift, buf, size); | |
383 | ||
384 | ret = raw_pwrite_aligned(bs, offset - shift, s->aligned_buf, 512); | |
385 | if (ret < 0) | |
386 | return ret; | |
387 | ||
388 | buf += size; | |
389 | offset += size; | |
390 | count -= size; | |
391 | sum += size; | |
392 | ||
393 | if (count == 0) | |
394 | return sum; | |
395 | } | |
396 | if (count & 0x1ff || (uintptr_t) buf & 0x1ff) { | |
397 | ||
398 | while ((size = (count & ~0x1ff)) != 0) { | |
399 | ||
400 | if (size > ALIGNED_BUFFER_SIZE) | |
401 | size = ALIGNED_BUFFER_SIZE; | |
402 | ||
403 | memcpy(s->aligned_buf, buf, size); | |
404 | ||
405 | ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, size); | |
406 | if (ret < 0) | |
407 | return ret; | |
408 | ||
409 | buf += ret; | |
410 | offset += ret; | |
411 | count -= ret; | |
412 | sum += ret; | |
413 | } | |
414 | /* here, count < 512 because (count & ~0x1ff) == 0 */ | |
415 | if (count) { | |
416 | ret = raw_pread_aligned(bs, offset, s->aligned_buf, 512); | |
417 | if (ret < 0) | |
418 | return ret; | |
419 | memcpy(s->aligned_buf, buf, count); | |
420 | ||
421 | ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, 512); | |
422 | if (ret < 0) | |
423 | return ret; | |
424 | if (count < ret) | |
425 | ret = count; | |
426 | ||
427 | sum += ret; | |
428 | } | |
429 | return sum; | |
430 | } | |
431 | } | |
432 | return raw_pwrite_aligned(bs, offset, buf, count) + sum; | |
433 | } | |
434 | ||
435 | #else | |
436 | #define raw_pread raw_pread_aligned | |
437 | #define raw_pwrite raw_pwrite_aligned | |
438 | #endif | |
439 | ||
440 | ||
414f0dab | 441 | #ifdef CONFIG_AIO |
83f64091 | 442 | /***********************************************************/ |
19cb3738 | 443 | /* Unix AIO using POSIX AIO */ |
83f64091 FB |
444 | |
445 | typedef struct RawAIOCB { | |
ce1a14dc | 446 | BlockDriverAIOCB common; |
53538725 | 447 | int fd; |
83f64091 | 448 | struct aiocb aiocb; |
ce1a14dc | 449 | struct RawAIOCB *next; |
bed5cc52 | 450 | int ret; |
83f64091 FB |
451 | } RawAIOCB; |
452 | ||
a76bab49 AL |
453 | typedef struct PosixAioState |
454 | { | |
9e472e10 | 455 | int rfd, wfd; |
a76bab49 AL |
456 | RawAIOCB *first_aio; |
457 | } PosixAioState; | |
83f64091 | 458 | |
53538725 AL |
459 | static int raw_fd_pool_get(BDRVRawState *s) |
460 | { | |
461 | int i; | |
462 | ||
463 | for (i = 0; i < RAW_FD_POOL_SIZE; i++) { | |
464 | /* already in use */ | |
465 | if (s->fd_pool[i] != -1) | |
466 | continue; | |
467 | ||
468 | /* try to dup file descriptor */ | |
469 | s->fd_pool[i] = dup(s->fd); | |
470 | if (s->fd_pool[i] != -1) | |
471 | return s->fd_pool[i]; | |
472 | } | |
473 | ||
474 | /* we couldn't dup the file descriptor so just use the main one */ | |
475 | return s->fd; | |
476 | } | |
477 | ||
478 | static void raw_fd_pool_put(RawAIOCB *acb) | |
479 | { | |
480 | BDRVRawState *s = acb->common.bs->opaque; | |
481 | int i; | |
482 | ||
483 | for (i = 0; i < RAW_FD_POOL_SIZE; i++) { | |
484 | if (s->fd_pool[i] == acb->fd) { | |
485 | close(s->fd_pool[i]); | |
486 | s->fd_pool[i] = -1; | |
487 | } | |
488 | } | |
489 | } | |
490 | ||
a76bab49 | 491 | static void posix_aio_read(void *opaque) |
83f64091 | 492 | { |
a76bab49 | 493 | PosixAioState *s = opaque; |
ce1a14dc | 494 | RawAIOCB *acb, **pacb; |
83f64091 | 495 | int ret; |
9e472e10 AL |
496 | ssize_t len; |
497 | ||
498 | do { | |
499 | char byte; | |
500 | ||
501 | len = read(s->rfd, &byte, 1); | |
2c41a5f9 AL |
502 | if (len == -1 && errno == EINTR) |
503 | continue; | |
9e472e10 AL |
504 | if (len == -1 && errno == EAGAIN) |
505 | break; | |
506 | } while (len == -1); | |
83f64091 FB |
507 | |
508 | for(;;) { | |
a76bab49 | 509 | pacb = &s->first_aio; |
83f64091 FB |
510 | for(;;) { |
511 | acb = *pacb; | |
512 | if (!acb) | |
513 | goto the_end; | |
ce1a14dc | 514 | ret = aio_error(&acb->aiocb); |
83f64091 FB |
515 | if (ret == ECANCELED) { |
516 | /* remove the request */ | |
ce1a14dc | 517 | *pacb = acb->next; |
53538725 | 518 | raw_fd_pool_put(acb); |
ce1a14dc | 519 | qemu_aio_release(acb); |
83f64091 FB |
520 | } else if (ret != EINPROGRESS) { |
521 | /* end of aio */ | |
522 | if (ret == 0) { | |
ce1a14dc PB |
523 | ret = aio_return(&acb->aiocb); |
524 | if (ret == acb->aiocb.aio_nbytes) | |
83f64091 FB |
525 | ret = 0; |
526 | else | |
19cb3738 | 527 | ret = -EINVAL; |
83f64091 FB |
528 | } else { |
529 | ret = -ret; | |
530 | } | |
531 | /* remove the request */ | |
ce1a14dc | 532 | *pacb = acb->next; |
83f64091 | 533 | /* call the callback */ |
ce1a14dc | 534 | acb->common.cb(acb->common.opaque, ret); |
53538725 | 535 | raw_fd_pool_put(acb); |
ce1a14dc | 536 | qemu_aio_release(acb); |
83f64091 FB |
537 | break; |
538 | } else { | |
ce1a14dc | 539 | pacb = &acb->next; |
83f64091 FB |
540 | } |
541 | } | |
542 | } | |
543 | the_end: ; | |
544 | } | |
545 | ||
a76bab49 | 546 | static int posix_aio_flush(void *opaque) |
baf35cb9 | 547 | { |
a76bab49 AL |
548 | PosixAioState *s = opaque; |
549 | return !!s->first_aio; | |
550 | } | |
551 | ||
552 | static PosixAioState *posix_aio_state; | |
baf35cb9 | 553 | |
9e472e10 AL |
554 | static void aio_signal_handler(int signum) |
555 | { | |
556 | if (posix_aio_state) { | |
557 | char byte = 0; | |
558 | ||
559 | write(posix_aio_state->wfd, &byte, sizeof(byte)); | |
560 | } | |
561 | ||
562 | qemu_service_io(); | |
563 | } | |
564 | ||
a76bab49 AL |
565 | static int posix_aio_init(void) |
566 | { | |
9e472e10 | 567 | struct sigaction act; |
a76bab49 | 568 | PosixAioState *s; |
9e472e10 | 569 | int fds[2]; |
a76bab49 AL |
570 | |
571 | if (posix_aio_state) | |
572 | return 0; | |
ad02ad6f | 573 | |
a76bab49 AL |
574 | s = qemu_malloc(sizeof(PosixAioState)); |
575 | if (s == NULL) | |
576 | return -ENOMEM; | |
baf35cb9 | 577 | |
9e472e10 AL |
578 | sigfillset(&act.sa_mask); |
579 | act.sa_flags = 0; /* do not restart syscalls to interrupt select() */ | |
580 | act.sa_handler = aio_signal_handler; | |
581 | sigaction(SIGUSR2, &act, NULL); | |
582 | ||
a76bab49 | 583 | s->first_aio = NULL; |
9e472e10 AL |
584 | if (pipe(fds) == -1) { |
585 | fprintf(stderr, "failed to create pipe\n"); | |
27463101 AL |
586 | return -errno; |
587 | } | |
2c41a5f9 | 588 | |
9e472e10 AL |
589 | s->rfd = fds[0]; |
590 | s->wfd = fds[1]; | |
591 | ||
592 | fcntl(s->wfd, F_SETFL, O_NONBLOCK); | |
2c41a5f9 | 593 | |
9e472e10 | 594 | qemu_aio_set_fd_handler(s->rfd, posix_aio_read, NULL, posix_aio_flush, s); |
baf35cb9 | 595 | |
acce87f9 AL |
596 | #if defined(__linux__) |
597 | { | |
598 | struct aioinit ai; | |
599 | ||
600 | memset(&ai, 0, sizeof(ai)); | |
601 | #if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 4) | |
602 | ai.aio_threads = 64; | |
603 | ai.aio_num = 64; | |
997306fc | 604 | #else |
acce87f9 AL |
605 | /* XXX: aio thread exit seems to hang on RedHat 9 and this init |
606 | seems to fix the problem. */ | |
607 | ai.aio_threads = 1; | |
608 | ai.aio_num = 1; | |
609 | ai.aio_idle_time = 365 * 100000; | |
610 | #endif | |
611 | aio_init(&ai); | |
612 | } | |
baf35cb9 | 613 | #endif |
a76bab49 | 614 | posix_aio_state = s; |
6eb5733a | 615 | |
a76bab49 | 616 | return 0; |
83f64091 FB |
617 | } |
618 | ||
ce1a14dc PB |
619 | static RawAIOCB *raw_aio_setup(BlockDriverState *bs, |
620 | int64_t sector_num, uint8_t *buf, int nb_sectors, | |
621 | BlockDriverCompletionFunc *cb, void *opaque) | |
83f64091 | 622 | { |
ce1a14dc PB |
623 | BDRVRawState *s = bs->opaque; |
624 | RawAIOCB *acb; | |
625 | ||
19cb3738 FB |
626 | if (fd_open(bs) < 0) |
627 | return NULL; | |
628 | ||
ce1a14dc PB |
629 | acb = qemu_aio_get(bs, cb, opaque); |
630 | if (!acb) | |
631 | return NULL; | |
53538725 AL |
632 | acb->fd = raw_fd_pool_get(s); |
633 | acb->aiocb.aio_fildes = acb->fd; | |
a76bab49 | 634 | acb->aiocb.aio_sigevent.sigev_signo = SIGUSR2; |
ce1a14dc PB |
635 | acb->aiocb.aio_sigevent.sigev_notify = SIGEV_SIGNAL; |
636 | acb->aiocb.aio_buf = buf; | |
985a03b0 TS |
637 | if (nb_sectors < 0) |
638 | acb->aiocb.aio_nbytes = -nb_sectors; | |
639 | else | |
640 | acb->aiocb.aio_nbytes = nb_sectors * 512; | |
ce1a14dc | 641 | acb->aiocb.aio_offset = sector_num * 512; |
a76bab49 AL |
642 | acb->next = posix_aio_state->first_aio; |
643 | posix_aio_state->first_aio = acb; | |
ce1a14dc | 644 | return acb; |
83f64091 FB |
645 | } |
646 | ||
bed5cc52 FB |
647 | static void raw_aio_em_cb(void* opaque) |
648 | { | |
649 | RawAIOCB *acb = opaque; | |
650 | acb->common.cb(acb->common.opaque, acb->ret); | |
651 | qemu_aio_release(acb); | |
652 | } | |
bed5cc52 | 653 | |
ce1a14dc PB |
654 | static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs, |
655 | int64_t sector_num, 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 | */ | |
03ff3ca3 | 664 | #if defined(O_DIRECT) |
bed5cc52 FB |
665 | BDRVRawState *s = bs->opaque; |
666 | ||
667 | if (unlikely(s->aligned_buf != NULL && ((uintptr_t) buf % 512))) { | |
668 | QEMUBH *bh; | |
669 | acb = qemu_aio_get(bs, cb, opaque); | |
670 | acb->ret = raw_pread(bs, 512 * sector_num, buf, 512 * nb_sectors); | |
671 | bh = qemu_bh_new(raw_aio_em_cb, acb); | |
672 | qemu_bh_schedule(bh); | |
673 | return &acb->common; | |
674 | } | |
675 | #endif | |
676 | ||
ce1a14dc PB |
677 | acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
678 | if (!acb) | |
679 | return NULL; | |
680 | if (aio_read(&acb->aiocb) < 0) { | |
681 | qemu_aio_release(acb); | |
682 | return NULL; | |
5fafdf24 | 683 | } |
ce1a14dc | 684 | return &acb->common; |
83f64091 FB |
685 | } |
686 | ||
ce1a14dc PB |
687 | static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs, |
688 | int64_t sector_num, const uint8_t *buf, int nb_sectors, | |
689 | BlockDriverCompletionFunc *cb, void *opaque) | |
83f64091 | 690 | { |
ce1a14dc | 691 | RawAIOCB *acb; |
83f64091 | 692 | |
bed5cc52 FB |
693 | /* |
694 | * If O_DIRECT is used and the buffer is not aligned fall back | |
695 | * to synchronous IO. | |
696 | */ | |
03ff3ca3 | 697 | #if defined(O_DIRECT) |
bed5cc52 FB |
698 | BDRVRawState *s = bs->opaque; |
699 | ||
700 | if (unlikely(s->aligned_buf != NULL && ((uintptr_t) buf % 512))) { | |
701 | QEMUBH *bh; | |
702 | acb = qemu_aio_get(bs, cb, opaque); | |
703 | acb->ret = raw_pwrite(bs, 512 * sector_num, buf, 512 * nb_sectors); | |
704 | bh = qemu_bh_new(raw_aio_em_cb, acb); | |
705 | qemu_bh_schedule(bh); | |
706 | return &acb->common; | |
707 | } | |
708 | #endif | |
709 | ||
ce1a14dc PB |
710 | acb = raw_aio_setup(bs, sector_num, (uint8_t*)buf, nb_sectors, cb, opaque); |
711 | if (!acb) | |
712 | return NULL; | |
713 | if (aio_write(&acb->aiocb) < 0) { | |
714 | qemu_aio_release(acb); | |
715 | return NULL; | |
5fafdf24 | 716 | } |
ce1a14dc | 717 | return &acb->common; |
83f64091 FB |
718 | } |
719 | ||
ce1a14dc | 720 | static void raw_aio_cancel(BlockDriverAIOCB *blockacb) |
83f64091 | 721 | { |
83f64091 | 722 | int ret; |
ce1a14dc PB |
723 | RawAIOCB *acb = (RawAIOCB *)blockacb; |
724 | RawAIOCB **pacb; | |
83f64091 | 725 | |
ce1a14dc | 726 | ret = aio_cancel(acb->aiocb.aio_fildes, &acb->aiocb); |
83f64091 FB |
727 | if (ret == AIO_NOTCANCELED) { |
728 | /* fail safe: if the aio could not be canceled, we wait for | |
729 | it */ | |
ce1a14dc | 730 | while (aio_error(&acb->aiocb) == EINPROGRESS); |
83f64091 FB |
731 | } |
732 | ||
733 | /* remove the callback from the queue */ | |
a76bab49 | 734 | pacb = &posix_aio_state->first_aio; |
83f64091 FB |
735 | for(;;) { |
736 | if (*pacb == NULL) { | |
737 | break; | |
738 | } else if (*pacb == acb) { | |
ce1a14dc | 739 | *pacb = acb->next; |
53538725 | 740 | raw_fd_pool_put(acb); |
ce1a14dc | 741 | qemu_aio_release(acb); |
83f64091 FB |
742 | break; |
743 | } | |
ce1a14dc | 744 | pacb = &acb->next; |
83f64091 FB |
745 | } |
746 | } | |
747 | ||
a76bab49 AL |
748 | #else /* CONFIG_AIO */ |
749 | static int posix_aio_init(void) | |
414f0dab | 750 | { |
674a24ac | 751 | return 0; |
414f0dab | 752 | } |
414f0dab BS |
753 | #endif /* CONFIG_AIO */ |
754 | ||
53538725 AL |
755 | static void raw_close_fd_pool(BDRVRawState *s) |
756 | { | |
757 | int i; | |
758 | ||
759 | for (i = 0; i < RAW_FD_POOL_SIZE; i++) { | |
760 | if (s->fd_pool[i] != -1) { | |
761 | close(s->fd_pool[i]); | |
762 | s->fd_pool[i] = -1; | |
763 | } | |
764 | } | |
765 | } | |
766 | ||
83f64091 FB |
767 | static void raw_close(BlockDriverState *bs) |
768 | { | |
769 | BDRVRawState *s = bs->opaque; | |
19cb3738 FB |
770 | if (s->fd >= 0) { |
771 | close(s->fd); | |
772 | s->fd = -1; | |
03ff3ca3 | 773 | #if defined(O_DIRECT) |
bed5cc52 FB |
774 | if (s->aligned_buf != NULL) |
775 | qemu_free(s->aligned_buf); | |
776 | #endif | |
19cb3738 | 777 | } |
53538725 | 778 | raw_close_fd_pool(s); |
83f64091 FB |
779 | } |
780 | ||
781 | static int raw_truncate(BlockDriverState *bs, int64_t offset) | |
782 | { | |
783 | BDRVRawState *s = bs->opaque; | |
19cb3738 FB |
784 | if (s->type != FTYPE_FILE) |
785 | return -ENOTSUP; | |
83f64091 FB |
786 | if (ftruncate(s->fd, offset) < 0) |
787 | return -errno; | |
788 | return 0; | |
789 | } | |
790 | ||
128ab2ff BS |
791 | #ifdef __OpenBSD__ |
792 | static int64_t raw_getlength(BlockDriverState *bs) | |
793 | { | |
794 | BDRVRawState *s = bs->opaque; | |
795 | int fd = s->fd; | |
796 | struct stat st; | |
797 | ||
798 | if (fstat(fd, &st)) | |
799 | return -1; | |
800 | if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) { | |
801 | struct disklabel dl; | |
802 | ||
803 | if (ioctl(fd, DIOCGDINFO, &dl)) | |
804 | return -1; | |
805 | return (uint64_t)dl.d_secsize * | |
806 | dl.d_partitions[DISKPART(st.st_rdev)].p_size; | |
807 | } else | |
808 | return st.st_size; | |
809 | } | |
810 | #else /* !__OpenBSD__ */ | |
83f64091 FB |
811 | static int64_t raw_getlength(BlockDriverState *bs) |
812 | { | |
813 | BDRVRawState *s = bs->opaque; | |
814 | int fd = s->fd; | |
815 | int64_t size; | |
816 | #ifdef _BSD | |
817 | struct stat sb; | |
818 | #endif | |
819 | #ifdef __sun__ | |
820 | struct dk_minfo minfo; | |
821 | int rv; | |
822 | #endif | |
19cb3738 FB |
823 | int ret; |
824 | ||
825 | ret = fd_open(bs); | |
826 | if (ret < 0) | |
827 | return ret; | |
83f64091 FB |
828 | |
829 | #ifdef _BSD | |
830 | if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) { | |
831 | #ifdef DIOCGMEDIASIZE | |
832 | if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size)) | |
833 | #endif | |
834 | #ifdef CONFIG_COCOA | |
835 | size = LONG_LONG_MAX; | |
836 | #else | |
837 | size = lseek(fd, 0LL, SEEK_END); | |
838 | #endif | |
839 | } else | |
840 | #endif | |
841 | #ifdef __sun__ | |
842 | /* | |
843 | * use the DKIOCGMEDIAINFO ioctl to read the size. | |
844 | */ | |
845 | rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo ); | |
846 | if ( rv != -1 ) { | |
847 | size = minfo.dki_lbsize * minfo.dki_capacity; | |
848 | } else /* there are reports that lseek on some devices | |
849 | fails, but irc discussion said that contingency | |
850 | on contingency was overkill */ | |
851 | #endif | |
852 | { | |
853 | size = lseek(fd, 0, SEEK_END); | |
854 | } | |
83f64091 FB |
855 | return size; |
856 | } | |
128ab2ff | 857 | #endif |
83f64091 FB |
858 | |
859 | static int raw_create(const char *filename, int64_t total_size, | |
860 | const char *backing_file, int flags) | |
861 | { | |
862 | int fd; | |
863 | ||
864 | if (flags || backing_file) | |
865 | return -ENOTSUP; | |
866 | ||
5fafdf24 | 867 | fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
83f64091 FB |
868 | 0644); |
869 | if (fd < 0) | |
870 | return -EIO; | |
871 | ftruncate(fd, total_size * 512); | |
872 | close(fd); | |
873 | return 0; | |
874 | } | |
875 | ||
876 | static void raw_flush(BlockDriverState *bs) | |
877 | { | |
878 | BDRVRawState *s = bs->opaque; | |
879 | fsync(s->fd); | |
880 | } | |
881 | ||
882 | BlockDriver bdrv_raw = { | |
883 | "raw", | |
884 | sizeof(BDRVRawState), | |
885 | NULL, /* no probe for protocols */ | |
886 | raw_open, | |
887 | NULL, | |
888 | NULL, | |
889 | raw_close, | |
890 | raw_create, | |
891 | raw_flush, | |
3b46e624 | 892 | |
414f0dab | 893 | #ifdef CONFIG_AIO |
83f64091 FB |
894 | .bdrv_aio_read = raw_aio_read, |
895 | .bdrv_aio_write = raw_aio_write, | |
896 | .bdrv_aio_cancel = raw_aio_cancel, | |
ce1a14dc | 897 | .aiocb_size = sizeof(RawAIOCB), |
414f0dab | 898 | #endif |
83f64091 FB |
899 | .bdrv_pread = raw_pread, |
900 | .bdrv_pwrite = raw_pwrite, | |
901 | .bdrv_truncate = raw_truncate, | |
902 | .bdrv_getlength = raw_getlength, | |
903 | }; | |
904 | ||
19cb3738 FB |
905 | /***********************************************/ |
906 | /* host device */ | |
907 | ||
908 | #ifdef CONFIG_COCOA | |
909 | static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ); | |
910 | static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ); | |
911 | ||
912 | kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ) | |
913 | { | |
5fafdf24 | 914 | kern_return_t kernResult; |
19cb3738 FB |
915 | mach_port_t masterPort; |
916 | CFMutableDictionaryRef classesToMatch; | |
917 | ||
918 | kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort ); | |
919 | if ( KERN_SUCCESS != kernResult ) { | |
920 | printf( "IOMasterPort returned %d\n", kernResult ); | |
921 | } | |
3b46e624 | 922 | |
5fafdf24 | 923 | classesToMatch = IOServiceMatching( kIOCDMediaClass ); |
19cb3738 FB |
924 | if ( classesToMatch == NULL ) { |
925 | printf( "IOServiceMatching returned a NULL dictionary.\n" ); | |
926 | } else { | |
927 | CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue ); | |
928 | } | |
929 | kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator ); | |
930 | if ( KERN_SUCCESS != kernResult ) | |
931 | { | |
932 | printf( "IOServiceGetMatchingServices returned %d\n", kernResult ); | |
933 | } | |
3b46e624 | 934 | |
19cb3738 FB |
935 | return kernResult; |
936 | } | |
937 | ||
938 | kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ) | |
939 | { | |
940 | io_object_t nextMedia; | |
941 | kern_return_t kernResult = KERN_FAILURE; | |
942 | *bsdPath = '\0'; | |
943 | nextMedia = IOIteratorNext( mediaIterator ); | |
944 | if ( nextMedia ) | |
945 | { | |
946 | CFTypeRef bsdPathAsCFString; | |
947 | bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 ); | |
948 | if ( bsdPathAsCFString ) { | |
949 | size_t devPathLength; | |
950 | strcpy( bsdPath, _PATH_DEV ); | |
951 | strcat( bsdPath, "r" ); | |
952 | devPathLength = strlen( bsdPath ); | |
953 | if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) { | |
954 | kernResult = KERN_SUCCESS; | |
955 | } | |
956 | CFRelease( bsdPathAsCFString ); | |
957 | } | |
958 | IOObjectRelease( nextMedia ); | |
959 | } | |
3b46e624 | 960 | |
19cb3738 FB |
961 | return kernResult; |
962 | } | |
963 | ||
964 | #endif | |
965 | ||
966 | static int hdev_open(BlockDriverState *bs, const char *filename, int flags) | |
967 | { | |
968 | BDRVRawState *s = bs->opaque; | |
53538725 | 969 | int fd, open_flags, ret, i; |
19cb3738 | 970 | |
a76bab49 AL |
971 | posix_aio_init(); |
972 | ||
19cb3738 FB |
973 | #ifdef CONFIG_COCOA |
974 | if (strstart(filename, "/dev/cdrom", NULL)) { | |
975 | kern_return_t kernResult; | |
976 | io_iterator_t mediaIterator; | |
977 | char bsdPath[ MAXPATHLEN ]; | |
978 | int fd; | |
5fafdf24 | 979 | |
19cb3738 FB |
980 | kernResult = FindEjectableCDMedia( &mediaIterator ); |
981 | kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) ); | |
3b46e624 | 982 | |
19cb3738 FB |
983 | if ( bsdPath[ 0 ] != '\0' ) { |
984 | strcat(bsdPath,"s0"); | |
985 | /* some CDs don't have a partition 0 */ | |
986 | fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE); | |
987 | if (fd < 0) { | |
988 | bsdPath[strlen(bsdPath)-1] = '1'; | |
989 | } else { | |
990 | close(fd); | |
991 | } | |
992 | filename = bsdPath; | |
993 | } | |
3b46e624 | 994 | |
19cb3738 FB |
995 | if ( mediaIterator ) |
996 | IOObjectRelease( mediaIterator ); | |
997 | } | |
998 | #endif | |
999 | open_flags = O_BINARY; | |
1000 | if ((flags & BDRV_O_ACCESS) == O_RDWR) { | |
1001 | open_flags |= O_RDWR; | |
1002 | } else { | |
1003 | open_flags |= O_RDONLY; | |
1004 | bs->read_only = 1; | |
1005 | } | |
33f00271 AZ |
1006 | #ifdef O_DIRECT |
1007 | if (flags & BDRV_O_DIRECT) | |
1008 | open_flags |= O_DIRECT; | |
1009 | #endif | |
19cb3738 FB |
1010 | |
1011 | s->type = FTYPE_FILE; | |
1012 | #if defined(__linux__) | |
1013 | if (strstart(filename, "/dev/cd", NULL)) { | |
1014 | /* open will not fail even if no CD is inserted */ | |
1015 | open_flags |= O_NONBLOCK; | |
1016 | s->type = FTYPE_CD; | |
1017 | } else if (strstart(filename, "/dev/fd", NULL)) { | |
1018 | s->type = FTYPE_FD; | |
6dd2db52 | 1019 | s->fd_open_flags = open_flags; |
19cb3738 FB |
1020 | /* open will not fail even if no floppy is inserted */ |
1021 | open_flags |= O_NONBLOCK; | |
985a03b0 TS |
1022 | } else if (strstart(filename, "/dev/sg", NULL)) { |
1023 | bs->sg = 1; | |
19cb3738 FB |
1024 | } |
1025 | #endif | |
1026 | fd = open(filename, open_flags, 0644); | |
1027 | if (fd < 0) { | |
1028 | ret = -errno; | |
1029 | if (ret == -EROFS) | |
1030 | ret = -EACCES; | |
1031 | return ret; | |
1032 | } | |
1033 | s->fd = fd; | |
53538725 AL |
1034 | for (i = 0; i < RAW_FD_POOL_SIZE; i++) |
1035 | s->fd_pool[i] = -1; | |
19cb3738 FB |
1036 | #if defined(__linux__) |
1037 | /* close fd so that we can reopen it as needed */ | |
1038 | if (s->type == FTYPE_FD) { | |
1039 | close(s->fd); | |
1040 | s->fd = -1; | |
1041 | s->fd_media_changed = 1; | |
1042 | } | |
1043 | #endif | |
1044 | return 0; | |
1045 | } | |
1046 | ||
03ff3ca3 | 1047 | #if defined(__linux__) |
19cb3738 FB |
1048 | /* Note: we do not have a reliable method to detect if the floppy is |
1049 | present. The current method is to try to open the floppy at every | |
1050 | I/O and to keep it opened during a few hundreds of ms. */ | |
1051 | static int fd_open(BlockDriverState *bs) | |
1052 | { | |
1053 | BDRVRawState *s = bs->opaque; | |
1054 | int last_media_present; | |
1055 | ||
1056 | if (s->type != FTYPE_FD) | |
1057 | return 0; | |
1058 | last_media_present = (s->fd >= 0); | |
5fafdf24 | 1059 | if (s->fd >= 0 && |
19cb3738 FB |
1060 | (qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) { |
1061 | close(s->fd); | |
1062 | s->fd = -1; | |
53538725 | 1063 | raw_close_fd_pool(s); |
19cb3738 FB |
1064 | #ifdef DEBUG_FLOPPY |
1065 | printf("Floppy closed\n"); | |
1066 | #endif | |
1067 | } | |
1068 | if (s->fd < 0) { | |
5fafdf24 | 1069 | if (s->fd_got_error && |
19cb3738 FB |
1070 | (qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) { |
1071 | #ifdef DEBUG_FLOPPY | |
1072 | printf("No floppy (open delayed)\n"); | |
1073 | #endif | |
1074 | return -EIO; | |
1075 | } | |
6dd2db52 | 1076 | s->fd = open(bs->filename, s->fd_open_flags); |
19cb3738 FB |
1077 | if (s->fd < 0) { |
1078 | s->fd_error_time = qemu_get_clock(rt_clock); | |
1079 | s->fd_got_error = 1; | |
1080 | if (last_media_present) | |
1081 | s->fd_media_changed = 1; | |
1082 | #ifdef DEBUG_FLOPPY | |
1083 | printf("No floppy\n"); | |
1084 | #endif | |
1085 | return -EIO; | |
1086 | } | |
1087 | #ifdef DEBUG_FLOPPY | |
1088 | printf("Floppy opened\n"); | |
1089 | #endif | |
1090 | } | |
1091 | if (!last_media_present) | |
1092 | s->fd_media_changed = 1; | |
1093 | s->fd_open_time = qemu_get_clock(rt_clock); | |
1094 | s->fd_got_error = 0; | |
1095 | return 0; | |
1096 | } | |
19cb3738 FB |
1097 | |
1098 | static int raw_is_inserted(BlockDriverState *bs) | |
1099 | { | |
1100 | BDRVRawState *s = bs->opaque; | |
1101 | int ret; | |
1102 | ||
1103 | switch(s->type) { | |
1104 | case FTYPE_CD: | |
1105 | ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); | |
1106 | if (ret == CDS_DISC_OK) | |
1107 | return 1; | |
1108 | else | |
1109 | return 0; | |
1110 | break; | |
1111 | case FTYPE_FD: | |
1112 | ret = fd_open(bs); | |
1113 | return (ret >= 0); | |
1114 | default: | |
1115 | return 1; | |
1116 | } | |
1117 | } | |
1118 | ||
1119 | /* currently only used by fdc.c, but a CD version would be good too */ | |
1120 | static int raw_media_changed(BlockDriverState *bs) | |
1121 | { | |
1122 | BDRVRawState *s = bs->opaque; | |
1123 | ||
1124 | switch(s->type) { | |
1125 | case FTYPE_FD: | |
1126 | { | |
1127 | int ret; | |
1128 | /* XXX: we do not have a true media changed indication. It | |
1129 | does not work if the floppy is changed without trying | |
1130 | to read it */ | |
1131 | fd_open(bs); | |
1132 | ret = s->fd_media_changed; | |
1133 | s->fd_media_changed = 0; | |
1134 | #ifdef DEBUG_FLOPPY | |
1135 | printf("Floppy changed=%d\n", ret); | |
1136 | #endif | |
1137 | return ret; | |
1138 | } | |
1139 | default: | |
1140 | return -ENOTSUP; | |
1141 | } | |
1142 | } | |
1143 | ||
1144 | static int raw_eject(BlockDriverState *bs, int eject_flag) | |
1145 | { | |
1146 | BDRVRawState *s = bs->opaque; | |
1147 | ||
1148 | switch(s->type) { | |
1149 | case FTYPE_CD: | |
1150 | if (eject_flag) { | |
1151 | if (ioctl (s->fd, CDROMEJECT, NULL) < 0) | |
1152 | perror("CDROMEJECT"); | |
1153 | } else { | |
1154 | if (ioctl (s->fd, CDROMCLOSETRAY, NULL) < 0) | |
1155 | perror("CDROMEJECT"); | |
1156 | } | |
1157 | break; | |
1158 | case FTYPE_FD: | |
1159 | { | |
1160 | int fd; | |
1161 | if (s->fd >= 0) { | |
1162 | close(s->fd); | |
1163 | s->fd = -1; | |
53538725 | 1164 | raw_close_fd_pool(s); |
19cb3738 | 1165 | } |
6dd2db52 | 1166 | fd = open(bs->filename, s->fd_open_flags | O_NONBLOCK); |
19cb3738 FB |
1167 | if (fd >= 0) { |
1168 | if (ioctl(fd, FDEJECT, 0) < 0) | |
1169 | perror("FDEJECT"); | |
1170 | close(fd); | |
1171 | } | |
1172 | } | |
1173 | break; | |
1174 | default: | |
1175 | return -ENOTSUP; | |
1176 | } | |
1177 | return 0; | |
1178 | } | |
1179 | ||
1180 | static int raw_set_locked(BlockDriverState *bs, int locked) | |
1181 | { | |
1182 | BDRVRawState *s = bs->opaque; | |
1183 | ||
1184 | switch(s->type) { | |
1185 | case FTYPE_CD: | |
1186 | if (ioctl (s->fd, CDROM_LOCKDOOR, locked) < 0) { | |
1187 | /* Note: an error can happen if the distribution automatically | |
1188 | mounts the CD-ROM */ | |
1189 | // perror("CDROM_LOCKDOOR"); | |
1190 | } | |
1191 | break; | |
1192 | default: | |
1193 | return -ENOTSUP; | |
1194 | } | |
1195 | return 0; | |
1196 | } | |
1197 | ||
985a03b0 TS |
1198 | static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
1199 | { | |
1200 | BDRVRawState *s = bs->opaque; | |
1201 | ||
1202 | return ioctl(s->fd, req, buf); | |
1203 | } | |
19cb3738 FB |
1204 | #else |
1205 | ||
08af02e2 AL |
1206 | static int fd_open(BlockDriverState *bs) |
1207 | { | |
1208 | return 0; | |
1209 | } | |
1210 | ||
19cb3738 FB |
1211 | static int raw_is_inserted(BlockDriverState *bs) |
1212 | { | |
1213 | return 1; | |
1214 | } | |
1215 | ||
1216 | static int raw_media_changed(BlockDriverState *bs) | |
1217 | { | |
1218 | return -ENOTSUP; | |
1219 | } | |
1220 | ||
1221 | static int raw_eject(BlockDriverState *bs, int eject_flag) | |
1222 | { | |
1223 | return -ENOTSUP; | |
1224 | } | |
1225 | ||
1226 | static int raw_set_locked(BlockDriverState *bs, int locked) | |
1227 | { | |
1228 | return -ENOTSUP; | |
1229 | } | |
1230 | ||
985a03b0 TS |
1231 | static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
1232 | { | |
1233 | return -ENOTSUP; | |
1234 | } | |
19cb3738 FB |
1235 | #endif /* !linux */ |
1236 | ||
1237 | BlockDriver bdrv_host_device = { | |
1238 | "host_device", | |
1239 | sizeof(BDRVRawState), | |
1240 | NULL, /* no probe for protocols */ | |
1241 | hdev_open, | |
1242 | NULL, | |
1243 | NULL, | |
1244 | raw_close, | |
1245 | NULL, | |
1246 | raw_flush, | |
3b46e624 | 1247 | |
414f0dab | 1248 | #ifdef CONFIG_AIO |
19cb3738 FB |
1249 | .bdrv_aio_read = raw_aio_read, |
1250 | .bdrv_aio_write = raw_aio_write, | |
1251 | .bdrv_aio_cancel = raw_aio_cancel, | |
1252 | .aiocb_size = sizeof(RawAIOCB), | |
414f0dab | 1253 | #endif |
19cb3738 FB |
1254 | .bdrv_pread = raw_pread, |
1255 | .bdrv_pwrite = raw_pwrite, | |
1256 | .bdrv_getlength = raw_getlength, | |
1257 | ||
1258 | /* removable device support */ | |
1259 | .bdrv_is_inserted = raw_is_inserted, | |
1260 | .bdrv_media_changed = raw_media_changed, | |
1261 | .bdrv_eject = raw_eject, | |
1262 | .bdrv_set_locked = raw_set_locked, | |
985a03b0 TS |
1263 | /* generic scsi device */ |
1264 | .bdrv_ioctl = raw_ioctl, | |
19cb3738 | 1265 | }; |