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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" |
0bf9e31a | 27 | #include "qemu-log.h" |
83f64091 | 28 | #include "block_int.h" |
5efa9d5a | 29 | #include "module.h" |
9ef91a67 | 30 | #include "block/raw-posix-aio.h" |
83f64091 | 31 | |
83f64091 FB |
32 | #ifdef CONFIG_COCOA |
33 | #include <paths.h> | |
34 | #include <sys/param.h> | |
35 | #include <IOKit/IOKitLib.h> | |
36 | #include <IOKit/IOBSD.h> | |
37 | #include <IOKit/storage/IOMediaBSDClient.h> | |
38 | #include <IOKit/storage/IOMedia.h> | |
39 | #include <IOKit/storage/IOCDMedia.h> | |
40 | //#include <IOKit/storage/IOCDTypes.h> | |
41 | #include <CoreFoundation/CoreFoundation.h> | |
42 | #endif | |
43 | ||
44 | #ifdef __sun__ | |
2e9671da TS |
45 | #define _POSIX_PTHREAD_SEMANTICS 1 |
46 | #include <signal.h> | |
83f64091 FB |
47 | #include <sys/dkio.h> |
48 | #endif | |
19cb3738 FB |
49 | #ifdef __linux__ |
50 | #include <sys/ioctl.h> | |
51 | #include <linux/cdrom.h> | |
52 | #include <linux/fd.h> | |
53 | #endif | |
a167ba50 | 54 | #if defined (__FreeBSD__) || defined(__FreeBSD_kernel__) |
543952ca | 55 | #include <signal.h> |
1cb6c3fd | 56 | #include <sys/disk.h> |
9f23011a | 57 | #include <sys/cdio.h> |
1cb6c3fd | 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) |
001faf32 BS |
75 | #define DEBUG_BLOCK_PRINT(formatCstr, ...) do { if (qemu_log_enabled()) \ |
76 | { qemu_log(formatCstr, ## __VA_ARGS__); qemu_log_flush(); } } while (0) | |
8c05dbf9 | 77 | #else |
001faf32 | 78 | #define DEBUG_BLOCK_PRINT(formatCstr, ...) |
8c05dbf9 TS |
79 | #endif |
80 | ||
f6465578 AL |
81 | /* OS X does not have O_DSYNC */ |
82 | #ifndef O_DSYNC | |
1c27a8b3 | 83 | #ifdef O_SYNC |
7ab064d2 | 84 | #define O_DSYNC O_SYNC |
1c27a8b3 JA |
85 | #elif defined(O_FSYNC) |
86 | #define O_DSYNC O_FSYNC | |
87 | #endif | |
f6465578 AL |
88 | #endif |
89 | ||
9f7965c7 AL |
90 | /* Approximate O_DIRECT with O_DSYNC if O_DIRECT isn't available */ |
91 | #ifndef O_DIRECT | |
92 | #define O_DIRECT O_DSYNC | |
93 | #endif | |
94 | ||
19cb3738 FB |
95 | #define FTYPE_FILE 0 |
96 | #define FTYPE_CD 1 | |
97 | #define FTYPE_FD 2 | |
83f64091 | 98 | |
bed5cc52 FB |
99 | #define ALIGNED_BUFFER_SIZE (32 * 512) |
100 | ||
19cb3738 FB |
101 | /* if the FD is not accessed during that time (in ms), we try to |
102 | reopen it to see if the disk has been changed */ | |
103 | #define FD_OPEN_TIMEOUT 1000 | |
83f64091 | 104 | |
19cb3738 FB |
105 | typedef struct BDRVRawState { |
106 | int fd; | |
107 | int type; | |
0e1d8f4c | 108 | int open_flags; |
19cb3738 FB |
109 | #if defined(__linux__) |
110 | /* linux floppy specific */ | |
19cb3738 FB |
111 | int64_t fd_open_time; |
112 | int64_t fd_error_time; | |
113 | int fd_got_error; | |
114 | int fd_media_changed; | |
83f64091 | 115 | #endif |
e44bd6fc | 116 | #ifdef CONFIG_LINUX_AIO |
5c6c3a6c | 117 | int use_aio; |
1e5b9d2f | 118 | void *aio_ctx; |
e44bd6fc | 119 | #endif |
bed5cc52 | 120 | uint8_t* aligned_buf; |
19cb3738 FB |
121 | } BDRVRawState; |
122 | ||
123 | static int fd_open(BlockDriverState *bs); | |
22afa7b5 | 124 | static int64_t raw_getlength(BlockDriverState *bs); |
83f64091 | 125 | |
a167ba50 | 126 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
f3a5d3f8 | 127 | static int cdrom_reopen(BlockDriverState *bs); |
9f23011a BS |
128 | #endif |
129 | ||
90babde0 | 130 | static int raw_open_common(BlockDriverState *bs, const char *filename, |
19a3da7f | 131 | int bdrv_flags, int open_flags) |
83f64091 FB |
132 | { |
133 | BDRVRawState *s = bs->opaque; | |
0e1d8f4c | 134 | int fd, ret; |
83f64091 | 135 | |
19a3da7f | 136 | s->open_flags = open_flags | O_BINARY; |
11a1feb6 | 137 | s->open_flags &= ~O_ACCMODE; |
f5edb014 | 138 | if (bdrv_flags & BDRV_O_RDWR) { |
0e1d8f4c | 139 | s->open_flags |= O_RDWR; |
83f64091 | 140 | } else { |
0e1d8f4c | 141 | s->open_flags |= O_RDONLY; |
83f64091 | 142 | } |
9f7965c7 AL |
143 | |
144 | /* Use O_DSYNC for write-through caching, no flags for write-back caching, | |
145 | * and O_DIRECT for no caching. */ | |
19a3da7f | 146 | if ((bdrv_flags & BDRV_O_NOCACHE)) |
0e1d8f4c | 147 | s->open_flags |= O_DIRECT; |
19a3da7f | 148 | else if (!(bdrv_flags & BDRV_O_CACHE_WB)) |
0e1d8f4c | 149 | s->open_flags |= O_DSYNC; |
83f64091 | 150 | |
90babde0 | 151 | s->fd = -1; |
40ff6d7e | 152 | fd = qemu_open(filename, s->open_flags, 0644); |
19cb3738 FB |
153 | if (fd < 0) { |
154 | ret = -errno; | |
155 | if (ret == -EROFS) | |
156 | ret = -EACCES; | |
157 | return ret; | |
158 | } | |
83f64091 | 159 | s->fd = fd; |
bed5cc52 | 160 | s->aligned_buf = NULL; |
5c6c3a6c | 161 | |
19a3da7f | 162 | if ((bdrv_flags & BDRV_O_NOCACHE)) { |
e268ca52 | 163 | s->aligned_buf = qemu_blockalign(bs, ALIGNED_BUFFER_SIZE); |
bed5cc52 | 164 | if (s->aligned_buf == NULL) { |
9ef91a67 | 165 | goto out_close; |
bed5cc52 FB |
166 | } |
167 | } | |
9ef91a67 | 168 | |
5c6c3a6c CH |
169 | #ifdef CONFIG_LINUX_AIO |
170 | if ((bdrv_flags & (BDRV_O_NOCACHE|BDRV_O_NATIVE_AIO)) == | |
171 | (BDRV_O_NOCACHE|BDRV_O_NATIVE_AIO)) { | |
d2e46345 KW |
172 | |
173 | /* We're falling back to POSIX AIO in some cases */ | |
174 | paio_init(); | |
175 | ||
5c6c3a6c CH |
176 | s->aio_ctx = laio_init(); |
177 | if (!s->aio_ctx) { | |
178 | goto out_free_buf; | |
179 | } | |
180 | s->use_aio = 1; | |
181 | } else | |
182 | #endif | |
183 | { | |
1e5b9d2f | 184 | if (paio_init() < 0) { |
5c6c3a6c CH |
185 | goto out_free_buf; |
186 | } | |
e44bd6fc | 187 | #ifdef CONFIG_LINUX_AIO |
5c6c3a6c | 188 | s->use_aio = 0; |
e44bd6fc | 189 | #endif |
9ef91a67 CH |
190 | } |
191 | ||
83f64091 | 192 | return 0; |
9ef91a67 CH |
193 | |
194 | out_free_buf: | |
195 | qemu_vfree(s->aligned_buf); | |
196 | out_close: | |
197 | close(fd); | |
198 | return -errno; | |
83f64091 FB |
199 | } |
200 | ||
90babde0 CH |
201 | static int raw_open(BlockDriverState *bs, const char *filename, int flags) |
202 | { | |
203 | BDRVRawState *s = bs->opaque; | |
204 | ||
205 | s->type = FTYPE_FILE; | |
9a2d77ad | 206 | return raw_open_common(bs, filename, flags, 0); |
90babde0 CH |
207 | } |
208 | ||
83f64091 FB |
209 | /* XXX: use host sector size if necessary with: |
210 | #ifdef DIOCGSECTORSIZE | |
211 | { | |
212 | unsigned int sectorsize = 512; | |
213 | if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) && | |
214 | sectorsize > bufsize) | |
215 | bufsize = sectorsize; | |
216 | } | |
217 | #endif | |
218 | #ifdef CONFIG_COCOA | |
219 | u_int32_t blockSize = 512; | |
220 | if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) { | |
221 | bufsize = blockSize; | |
222 | } | |
223 | #endif | |
224 | */ | |
225 | ||
bed5cc52 FB |
226 | /* |
227 | * offset and count are in bytes, but must be multiples of 512 for files | |
228 | * opened with O_DIRECT. buf must be aligned to 512 bytes then. | |
229 | * | |
230 | * This function may be called without alignment if the caller ensures | |
231 | * that O_DIRECT is not in effect. | |
232 | */ | |
233 | static int raw_pread_aligned(BlockDriverState *bs, int64_t offset, | |
83f64091 FB |
234 | uint8_t *buf, int count) |
235 | { | |
236 | BDRVRawState *s = bs->opaque; | |
237 | int ret; | |
3b46e624 | 238 | |
19cb3738 FB |
239 | ret = fd_open(bs); |
240 | if (ret < 0) | |
241 | return ret; | |
242 | ||
4899d10d | 243 | ret = pread(s->fd, buf, count, offset); |
8c05dbf9 | 244 | if (ret == count) |
65d21bc7 | 245 | return ret; |
8c05dbf9 | 246 | |
22afa7b5 KW |
247 | /* Allow reads beyond the end (needed for pwrite) */ |
248 | if ((ret == 0) && bs->growable) { | |
249 | int64_t size = raw_getlength(bs); | |
250 | if (offset >= size) { | |
251 | memset(buf, 0, count); | |
65d21bc7 | 252 | return count; |
22afa7b5 KW |
253 | } |
254 | } | |
255 | ||
92868412 JM |
256 | DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
257 | "] read failed %d : %d = %s\n", | |
8c05dbf9 TS |
258 | s->fd, bs->filename, offset, buf, count, |
259 | bs->total_sectors, ret, errno, strerror(errno)); | |
260 | ||
261 | /* Try harder for CDrom. */ | |
65d21bc7 | 262 | if (s->type != FTYPE_FILE) { |
4899d10d | 263 | ret = pread(s->fd, buf, count, offset); |
8c05dbf9 | 264 | if (ret == count) |
65d21bc7 | 265 | return ret; |
4899d10d | 266 | ret = pread(s->fd, buf, count, offset); |
8c05dbf9 | 267 | if (ret == count) |
65d21bc7 | 268 | return ret; |
8c05dbf9 | 269 | |
92868412 JM |
270 | DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
271 | "] retry read failed %d : %d = %s\n", | |
8c05dbf9 TS |
272 | s->fd, bs->filename, offset, buf, count, |
273 | bs->total_sectors, ret, errno, strerror(errno)); | |
274 | } | |
275 | ||
94c6d6d8 | 276 | return (ret < 0) ? -errno : ret; |
83f64091 FB |
277 | } |
278 | ||
bed5cc52 FB |
279 | /* |
280 | * offset and count are in bytes, but must be multiples of 512 for files | |
281 | * opened with O_DIRECT. buf must be aligned to 512 bytes then. | |
282 | * | |
283 | * This function may be called without alignment if the caller ensures | |
284 | * that O_DIRECT is not in effect. | |
285 | */ | |
286 | static int raw_pwrite_aligned(BlockDriverState *bs, int64_t offset, | |
83f64091 FB |
287 | const uint8_t *buf, int count) |
288 | { | |
289 | BDRVRawState *s = bs->opaque; | |
290 | int ret; | |
3b46e624 | 291 | |
19cb3738 FB |
292 | ret = fd_open(bs); |
293 | if (ret < 0) | |
4141d4c2 | 294 | return -errno; |
19cb3738 | 295 | |
4899d10d | 296 | ret = pwrite(s->fd, buf, count, offset); |
8c05dbf9 | 297 | if (ret == count) |
65d21bc7 | 298 | return ret; |
8c05dbf9 | 299 | |
92868412 JM |
300 | DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
301 | "] write failed %d : %d = %s\n", | |
8c05dbf9 TS |
302 | s->fd, bs->filename, offset, buf, count, |
303 | bs->total_sectors, ret, errno, strerror(errno)); | |
304 | ||
4141d4c2 | 305 | return (ret < 0) ? -errno : ret; |
83f64091 FB |
306 | } |
307 | ||
bed5cc52 | 308 | |
bed5cc52 FB |
309 | /* |
310 | * offset and count are in bytes and possibly not aligned. For files opened | |
311 | * with O_DIRECT, necessary alignments are ensured before calling | |
312 | * raw_pread_aligned to do the actual read. | |
313 | */ | |
314 | static int raw_pread(BlockDriverState *bs, int64_t offset, | |
315 | uint8_t *buf, int count) | |
316 | { | |
317 | BDRVRawState *s = bs->opaque; | |
318 | int size, ret, shift, sum; | |
319 | ||
320 | sum = 0; | |
321 | ||
322 | if (s->aligned_buf != NULL) { | |
323 | ||
324 | if (offset & 0x1ff) { | |
325 | /* align offset on a 512 bytes boundary */ | |
326 | ||
327 | shift = offset & 0x1ff; | |
328 | size = (shift + count + 0x1ff) & ~0x1ff; | |
329 | if (size > ALIGNED_BUFFER_SIZE) | |
330 | size = ALIGNED_BUFFER_SIZE; | |
331 | ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, size); | |
332 | if (ret < 0) | |
333 | return ret; | |
334 | ||
335 | size = 512 - shift; | |
336 | if (size > count) | |
337 | size = count; | |
338 | memcpy(buf, s->aligned_buf + shift, size); | |
339 | ||
340 | buf += size; | |
341 | offset += size; | |
342 | count -= size; | |
343 | sum += size; | |
344 | ||
345 | if (count == 0) | |
346 | return sum; | |
347 | } | |
348 | if (count & 0x1ff || (uintptr_t) buf & 0x1ff) { | |
349 | ||
350 | /* read on aligned buffer */ | |
351 | ||
352 | while (count) { | |
353 | ||
354 | size = (count + 0x1ff) & ~0x1ff; | |
355 | if (size > ALIGNED_BUFFER_SIZE) | |
356 | size = ALIGNED_BUFFER_SIZE; | |
357 | ||
358 | ret = raw_pread_aligned(bs, offset, s->aligned_buf, size); | |
053965c7 | 359 | if (ret < 0) { |
bed5cc52 | 360 | return ret; |
053965c7 KW |
361 | } else if (ret == 0) { |
362 | fprintf(stderr, "raw_pread: read beyond end of file\n"); | |
363 | abort(); | |
364 | } | |
bed5cc52 FB |
365 | |
366 | size = ret; | |
367 | if (size > count) | |
368 | size = count; | |
369 | ||
370 | memcpy(buf, s->aligned_buf, size); | |
371 | ||
372 | buf += size; | |
373 | offset += size; | |
374 | count -= size; | |
375 | sum += size; | |
376 | } | |
377 | ||
378 | return sum; | |
379 | } | |
380 | } | |
381 | ||
382 | return raw_pread_aligned(bs, offset, buf, count) + sum; | |
383 | } | |
384 | ||
eda578e5 AL |
385 | static int raw_read(BlockDriverState *bs, int64_t sector_num, |
386 | uint8_t *buf, int nb_sectors) | |
387 | { | |
537a1d4b AL |
388 | int ret; |
389 | ||
9040385d JS |
390 | ret = raw_pread(bs, sector_num * BDRV_SECTOR_SIZE, buf, |
391 | nb_sectors * BDRV_SECTOR_SIZE); | |
392 | if (ret == (nb_sectors * BDRV_SECTOR_SIZE)) | |
537a1d4b AL |
393 | ret = 0; |
394 | return ret; | |
eda578e5 AL |
395 | } |
396 | ||
bed5cc52 FB |
397 | /* |
398 | * offset and count are in bytes and possibly not aligned. For files opened | |
399 | * with O_DIRECT, necessary alignments are ensured before calling | |
400 | * raw_pwrite_aligned to do the actual write. | |
401 | */ | |
402 | static int raw_pwrite(BlockDriverState *bs, int64_t offset, | |
403 | const uint8_t *buf, int count) | |
404 | { | |
405 | BDRVRawState *s = bs->opaque; | |
406 | int size, ret, shift, sum; | |
407 | ||
408 | sum = 0; | |
409 | ||
410 | if (s->aligned_buf != NULL) { | |
411 | ||
412 | if (offset & 0x1ff) { | |
413 | /* align offset on a 512 bytes boundary */ | |
414 | shift = offset & 0x1ff; | |
415 | ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, 512); | |
416 | if (ret < 0) | |
417 | return ret; | |
418 | ||
419 | size = 512 - shift; | |
420 | if (size > count) | |
421 | size = count; | |
422 | memcpy(s->aligned_buf + shift, buf, size); | |
423 | ||
424 | ret = raw_pwrite_aligned(bs, offset - shift, s->aligned_buf, 512); | |
425 | if (ret < 0) | |
426 | return ret; | |
427 | ||
428 | buf += size; | |
429 | offset += size; | |
430 | count -= size; | |
431 | sum += size; | |
432 | ||
433 | if (count == 0) | |
434 | return sum; | |
435 | } | |
436 | if (count & 0x1ff || (uintptr_t) buf & 0x1ff) { | |
437 | ||
438 | while ((size = (count & ~0x1ff)) != 0) { | |
439 | ||
440 | if (size > ALIGNED_BUFFER_SIZE) | |
441 | size = ALIGNED_BUFFER_SIZE; | |
442 | ||
443 | memcpy(s->aligned_buf, buf, size); | |
444 | ||
445 | ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, size); | |
446 | if (ret < 0) | |
447 | return ret; | |
448 | ||
449 | buf += ret; | |
450 | offset += ret; | |
451 | count -= ret; | |
452 | sum += ret; | |
453 | } | |
454 | /* here, count < 512 because (count & ~0x1ff) == 0 */ | |
455 | if (count) { | |
456 | ret = raw_pread_aligned(bs, offset, s->aligned_buf, 512); | |
457 | if (ret < 0) | |
458 | return ret; | |
459 | memcpy(s->aligned_buf, buf, count); | |
460 | ||
461 | ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, 512); | |
462 | if (ret < 0) | |
463 | return ret; | |
464 | if (count < ret) | |
465 | ret = count; | |
466 | ||
467 | sum += ret; | |
468 | } | |
469 | return sum; | |
470 | } | |
471 | } | |
472 | return raw_pwrite_aligned(bs, offset, buf, count) + sum; | |
473 | } | |
474 | ||
eda578e5 AL |
475 | static int raw_write(BlockDriverState *bs, int64_t sector_num, |
476 | const uint8_t *buf, int nb_sectors) | |
477 | { | |
537a1d4b | 478 | int ret; |
9040385d JS |
479 | ret = raw_pwrite(bs, sector_num * BDRV_SECTOR_SIZE, buf, |
480 | nb_sectors * BDRV_SECTOR_SIZE); | |
481 | if (ret == (nb_sectors * BDRV_SECTOR_SIZE)) | |
537a1d4b AL |
482 | ret = 0; |
483 | return ret; | |
eda578e5 AL |
484 | } |
485 | ||
9ef91a67 CH |
486 | /* |
487 | * Check if all memory in this vector is sector aligned. | |
488 | */ | |
489 | static int qiov_is_aligned(QEMUIOVector *qiov) | |
a76bab49 | 490 | { |
9ef91a67 | 491 | int i; |
83f64091 | 492 | |
9ef91a67 | 493 | for (i = 0; i < qiov->niov; i++) { |
9040385d | 494 | if ((uintptr_t) qiov->iov[i].iov_base % BDRV_SECTOR_SIZE) { |
9ef91a67 | 495 | return 0; |
c16b5a2c | 496 | } |
c16b5a2c | 497 | } |
c16b5a2c | 498 | |
9ef91a67 | 499 | return 1; |
c16b5a2c CH |
500 | } |
501 | ||
9ef91a67 CH |
502 | static BlockDriverAIOCB *raw_aio_submit(BlockDriverState *bs, |
503 | int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, | |
504 | BlockDriverCompletionFunc *cb, void *opaque, int type) | |
83f64091 | 505 | { |
ce1a14dc | 506 | BDRVRawState *s = bs->opaque; |
ce1a14dc | 507 | |
19cb3738 FB |
508 | if (fd_open(bs) < 0) |
509 | return NULL; | |
510 | ||
f141eafe AL |
511 | /* |
512 | * If O_DIRECT is used the buffer needs to be aligned on a sector | |
9ef91a67 CH |
513 | * boundary. Check if this is the case or telll the low-level |
514 | * driver that it needs to copy the buffer. | |
f141eafe | 515 | */ |
5c6c3a6c CH |
516 | if (s->aligned_buf) { |
517 | if (!qiov_is_aligned(qiov)) { | |
518 | type |= QEMU_AIO_MISALIGNED; | |
e44bd6fc | 519 | #ifdef CONFIG_LINUX_AIO |
5c6c3a6c CH |
520 | } else if (s->use_aio) { |
521 | return laio_submit(bs, s->aio_ctx, s->fd, sector_num, qiov, | |
e44bd6fc SW |
522 | nb_sectors, cb, opaque, type); |
523 | #endif | |
5c6c3a6c | 524 | } |
9ef91a67 | 525 | } |
f141eafe | 526 | |
1e5b9d2f | 527 | return paio_submit(bs, s->fd, sector_num, qiov, nb_sectors, |
9ef91a67 | 528 | cb, opaque, type); |
83f64091 FB |
529 | } |
530 | ||
f141eafe AL |
531 | static BlockDriverAIOCB *raw_aio_readv(BlockDriverState *bs, |
532 | int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, | |
ce1a14dc | 533 | BlockDriverCompletionFunc *cb, void *opaque) |
83f64091 | 534 | { |
9ef91a67 CH |
535 | return raw_aio_submit(bs, sector_num, qiov, nb_sectors, |
536 | cb, opaque, QEMU_AIO_READ); | |
83f64091 FB |
537 | } |
538 | ||
f141eafe AL |
539 | static BlockDriverAIOCB *raw_aio_writev(BlockDriverState *bs, |
540 | int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, | |
ce1a14dc | 541 | BlockDriverCompletionFunc *cb, void *opaque) |
83f64091 | 542 | { |
9ef91a67 CH |
543 | return raw_aio_submit(bs, sector_num, qiov, nb_sectors, |
544 | cb, opaque, QEMU_AIO_WRITE); | |
83f64091 | 545 | } |
53538725 | 546 | |
b2e12bc6 CH |
547 | static BlockDriverAIOCB *raw_aio_flush(BlockDriverState *bs, |
548 | BlockDriverCompletionFunc *cb, void *opaque) | |
549 | { | |
550 | BDRVRawState *s = bs->opaque; | |
551 | ||
552 | if (fd_open(bs) < 0) | |
553 | return NULL; | |
554 | ||
1e5b9d2f | 555 | return paio_submit(bs, s->fd, 0, NULL, 0, cb, opaque, QEMU_AIO_FLUSH); |
b2e12bc6 CH |
556 | } |
557 | ||
83f64091 FB |
558 | static void raw_close(BlockDriverState *bs) |
559 | { | |
560 | BDRVRawState *s = bs->opaque; | |
19cb3738 FB |
561 | if (s->fd >= 0) { |
562 | close(s->fd); | |
563 | s->fd = -1; | |
bed5cc52 | 564 | if (s->aligned_buf != NULL) |
f8a83245 | 565 | qemu_vfree(s->aligned_buf); |
19cb3738 | 566 | } |
83f64091 FB |
567 | } |
568 | ||
569 | static int raw_truncate(BlockDriverState *bs, int64_t offset) | |
570 | { | |
571 | BDRVRawState *s = bs->opaque; | |
19cb3738 FB |
572 | if (s->type != FTYPE_FILE) |
573 | return -ENOTSUP; | |
83f64091 FB |
574 | if (ftruncate(s->fd, offset) < 0) |
575 | return -errno; | |
576 | return 0; | |
577 | } | |
578 | ||
128ab2ff BS |
579 | #ifdef __OpenBSD__ |
580 | static int64_t raw_getlength(BlockDriverState *bs) | |
581 | { | |
582 | BDRVRawState *s = bs->opaque; | |
583 | int fd = s->fd; | |
584 | struct stat st; | |
585 | ||
586 | if (fstat(fd, &st)) | |
587 | return -1; | |
588 | if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) { | |
589 | struct disklabel dl; | |
590 | ||
591 | if (ioctl(fd, DIOCGDINFO, &dl)) | |
592 | return -1; | |
593 | return (uint64_t)dl.d_secsize * | |
594 | dl.d_partitions[DISKPART(st.st_rdev)].p_size; | |
595 | } else | |
596 | return st.st_size; | |
597 | } | |
50779cc2 CH |
598 | #elif defined(__sun__) |
599 | static int64_t raw_getlength(BlockDriverState *bs) | |
600 | { | |
601 | BDRVRawState *s = bs->opaque; | |
602 | struct dk_minfo minfo; | |
603 | int ret; | |
604 | ||
605 | ret = fd_open(bs); | |
606 | if (ret < 0) { | |
607 | return ret; | |
608 | } | |
609 | ||
610 | /* | |
611 | * Use the DKIOCGMEDIAINFO ioctl to read the size. | |
612 | */ | |
613 | ret = ioctl(s->fd, DKIOCGMEDIAINFO, &minfo); | |
614 | if (ret != -1) { | |
615 | return minfo.dki_lbsize * minfo.dki_capacity; | |
616 | } | |
617 | ||
618 | /* | |
619 | * There are reports that lseek on some devices fails, but | |
620 | * irc discussion said that contingency on contingency was overkill. | |
621 | */ | |
622 | return lseek(s->fd, 0, SEEK_END); | |
623 | } | |
624 | #elif defined(CONFIG_BSD) | |
625 | static int64_t raw_getlength(BlockDriverState *bs) | |
83f64091 FB |
626 | { |
627 | BDRVRawState *s = bs->opaque; | |
628 | int fd = s->fd; | |
629 | int64_t size; | |
83f64091 | 630 | struct stat sb; |
a167ba50 | 631 | #if defined (__FreeBSD__) || defined(__FreeBSD_kernel__) |
9f23011a | 632 | int reopened = 0; |
83f64091 | 633 | #endif |
19cb3738 FB |
634 | int ret; |
635 | ||
636 | ret = fd_open(bs); | |
637 | if (ret < 0) | |
638 | return ret; | |
83f64091 | 639 | |
a167ba50 | 640 | #if defined (__FreeBSD__) || defined(__FreeBSD_kernel__) |
9f23011a BS |
641 | again: |
642 | #endif | |
83f64091 FB |
643 | if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) { |
644 | #ifdef DIOCGMEDIASIZE | |
645 | if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size)) | |
c5e97233 BS |
646 | #elif defined(DIOCGPART) |
647 | { | |
648 | struct partinfo pi; | |
649 | if (ioctl(fd, DIOCGPART, &pi) == 0) | |
650 | size = pi.media_size; | |
651 | else | |
652 | size = 0; | |
653 | } | |
654 | if (size == 0) | |
83f64091 FB |
655 | #endif |
656 | #ifdef CONFIG_COCOA | |
657 | size = LONG_LONG_MAX; | |
658 | #else | |
659 | size = lseek(fd, 0LL, SEEK_END); | |
9f23011a | 660 | #endif |
a167ba50 | 661 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
9f23011a BS |
662 | switch(s->type) { |
663 | case FTYPE_CD: | |
664 | /* XXX FreeBSD acd returns UINT_MAX sectors for an empty drive */ | |
665 | if (size == 2048LL * (unsigned)-1) | |
666 | size = 0; | |
667 | /* XXX no disc? maybe we need to reopen... */ | |
f3a5d3f8 | 668 | if (size <= 0 && !reopened && cdrom_reopen(bs) >= 0) { |
9f23011a BS |
669 | reopened = 1; |
670 | goto again; | |
671 | } | |
672 | } | |
83f64091 | 673 | #endif |
50779cc2 | 674 | } else { |
83f64091 FB |
675 | size = lseek(fd, 0, SEEK_END); |
676 | } | |
83f64091 FB |
677 | return size; |
678 | } | |
50779cc2 CH |
679 | #else |
680 | static int64_t raw_getlength(BlockDriverState *bs) | |
681 | { | |
682 | BDRVRawState *s = bs->opaque; | |
683 | int ret; | |
684 | ||
685 | ret = fd_open(bs); | |
686 | if (ret < 0) { | |
687 | return ret; | |
688 | } | |
689 | ||
690 | return lseek(s->fd, 0, SEEK_END); | |
691 | } | |
128ab2ff | 692 | #endif |
83f64091 | 693 | |
0e7e1989 | 694 | static int raw_create(const char *filename, QEMUOptionParameter *options) |
83f64091 FB |
695 | { |
696 | int fd; | |
1e37d059 | 697 | int result = 0; |
0e7e1989 | 698 | int64_t total_size = 0; |
83f64091 | 699 | |
0e7e1989 KW |
700 | /* Read out options */ |
701 | while (options && options->name) { | |
702 | if (!strcmp(options->name, BLOCK_OPT_SIZE)) { | |
9040385d | 703 | total_size = options->value.n / BDRV_SECTOR_SIZE; |
0e7e1989 KW |
704 | } |
705 | options++; | |
706 | } | |
83f64091 | 707 | |
5fafdf24 | 708 | fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
83f64091 | 709 | 0644); |
1e37d059 SW |
710 | if (fd < 0) { |
711 | result = -errno; | |
712 | } else { | |
9040385d | 713 | if (ftruncate(fd, total_size * BDRV_SECTOR_SIZE) != 0) { |
1e37d059 SW |
714 | result = -errno; |
715 | } | |
716 | if (close(fd) != 0) { | |
717 | result = -errno; | |
718 | } | |
719 | } | |
720 | return result; | |
83f64091 FB |
721 | } |
722 | ||
723 | static void raw_flush(BlockDriverState *bs) | |
724 | { | |
725 | BDRVRawState *s = bs->opaque; | |
6f1953c4 | 726 | qemu_fdatasync(s->fd); |
83f64091 FB |
727 | } |
728 | ||
0e7e1989 KW |
729 | |
730 | static QEMUOptionParameter raw_create_options[] = { | |
db08adf5 KW |
731 | { |
732 | .name = BLOCK_OPT_SIZE, | |
733 | .type = OPT_SIZE, | |
734 | .help = "Virtual disk size" | |
735 | }, | |
0e7e1989 KW |
736 | { NULL } |
737 | }; | |
738 | ||
84a12e66 CH |
739 | static BlockDriver bdrv_file = { |
740 | .format_name = "file", | |
741 | .protocol_name = "file", | |
856ae5c3 BS |
742 | .instance_size = sizeof(BDRVRawState), |
743 | .bdrv_probe = NULL, /* no probe for protocols */ | |
66f82cee | 744 | .bdrv_file_open = raw_open, |
856ae5c3 BS |
745 | .bdrv_read = raw_read, |
746 | .bdrv_write = raw_write, | |
747 | .bdrv_close = raw_close, | |
748 | .bdrv_create = raw_create, | |
749 | .bdrv_flush = raw_flush, | |
3b46e624 | 750 | |
f141eafe AL |
751 | .bdrv_aio_readv = raw_aio_readv, |
752 | .bdrv_aio_writev = raw_aio_writev, | |
b2e12bc6 | 753 | .bdrv_aio_flush = raw_aio_flush, |
3c529d93 | 754 | |
83f64091 FB |
755 | .bdrv_truncate = raw_truncate, |
756 | .bdrv_getlength = raw_getlength, | |
0e7e1989 KW |
757 | |
758 | .create_options = raw_create_options, | |
83f64091 FB |
759 | }; |
760 | ||
19cb3738 FB |
761 | /***********************************************/ |
762 | /* host device */ | |
763 | ||
764 | #ifdef CONFIG_COCOA | |
765 | static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ); | |
766 | static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ); | |
767 | ||
768 | kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ) | |
769 | { | |
5fafdf24 | 770 | kern_return_t kernResult; |
19cb3738 FB |
771 | mach_port_t masterPort; |
772 | CFMutableDictionaryRef classesToMatch; | |
773 | ||
774 | kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort ); | |
775 | if ( KERN_SUCCESS != kernResult ) { | |
776 | printf( "IOMasterPort returned %d\n", kernResult ); | |
777 | } | |
3b46e624 | 778 | |
5fafdf24 | 779 | classesToMatch = IOServiceMatching( kIOCDMediaClass ); |
19cb3738 FB |
780 | if ( classesToMatch == NULL ) { |
781 | printf( "IOServiceMatching returned a NULL dictionary.\n" ); | |
782 | } else { | |
783 | CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue ); | |
784 | } | |
785 | kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator ); | |
786 | if ( KERN_SUCCESS != kernResult ) | |
787 | { | |
788 | printf( "IOServiceGetMatchingServices returned %d\n", kernResult ); | |
789 | } | |
3b46e624 | 790 | |
19cb3738 FB |
791 | return kernResult; |
792 | } | |
793 | ||
794 | kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ) | |
795 | { | |
796 | io_object_t nextMedia; | |
797 | kern_return_t kernResult = KERN_FAILURE; | |
798 | *bsdPath = '\0'; | |
799 | nextMedia = IOIteratorNext( mediaIterator ); | |
800 | if ( nextMedia ) | |
801 | { | |
802 | CFTypeRef bsdPathAsCFString; | |
803 | bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 ); | |
804 | if ( bsdPathAsCFString ) { | |
805 | size_t devPathLength; | |
806 | strcpy( bsdPath, _PATH_DEV ); | |
807 | strcat( bsdPath, "r" ); | |
808 | devPathLength = strlen( bsdPath ); | |
809 | if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) { | |
810 | kernResult = KERN_SUCCESS; | |
811 | } | |
812 | CFRelease( bsdPathAsCFString ); | |
813 | } | |
814 | IOObjectRelease( nextMedia ); | |
815 | } | |
3b46e624 | 816 | |
19cb3738 FB |
817 | return kernResult; |
818 | } | |
819 | ||
820 | #endif | |
821 | ||
508c7cb3 CH |
822 | static int hdev_probe_device(const char *filename) |
823 | { | |
824 | struct stat st; | |
825 | ||
826 | /* allow a dedicated CD-ROM driver to match with a higher priority */ | |
827 | if (strstart(filename, "/dev/cdrom", NULL)) | |
828 | return 50; | |
829 | ||
830 | if (stat(filename, &st) >= 0 && | |
831 | (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode))) { | |
832 | return 100; | |
833 | } | |
834 | ||
835 | return 0; | |
836 | } | |
837 | ||
19cb3738 FB |
838 | static int hdev_open(BlockDriverState *bs, const char *filename, int flags) |
839 | { | |
840 | BDRVRawState *s = bs->opaque; | |
a76bab49 | 841 | |
19cb3738 FB |
842 | #ifdef CONFIG_COCOA |
843 | if (strstart(filename, "/dev/cdrom", NULL)) { | |
844 | kern_return_t kernResult; | |
845 | io_iterator_t mediaIterator; | |
846 | char bsdPath[ MAXPATHLEN ]; | |
847 | int fd; | |
5fafdf24 | 848 | |
19cb3738 FB |
849 | kernResult = FindEjectableCDMedia( &mediaIterator ); |
850 | kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) ); | |
3b46e624 | 851 | |
19cb3738 FB |
852 | if ( bsdPath[ 0 ] != '\0' ) { |
853 | strcat(bsdPath,"s0"); | |
854 | /* some CDs don't have a partition 0 */ | |
855 | fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE); | |
856 | if (fd < 0) { | |
857 | bsdPath[strlen(bsdPath)-1] = '1'; | |
858 | } else { | |
859 | close(fd); | |
860 | } | |
861 | filename = bsdPath; | |
862 | } | |
3b46e624 | 863 | |
19cb3738 FB |
864 | if ( mediaIterator ) |
865 | IOObjectRelease( mediaIterator ); | |
866 | } | |
867 | #endif | |
19cb3738 FB |
868 | |
869 | s->type = FTYPE_FILE; | |
4dd75c70 | 870 | #if defined(__linux__) |
f3a5d3f8 | 871 | if (strstart(filename, "/dev/sg", NULL)) { |
985a03b0 | 872 | bs->sg = 1; |
19cb3738 FB |
873 | } |
874 | #endif | |
90babde0 | 875 | |
19a3da7f | 876 | return raw_open_common(bs, filename, flags, 0); |
19cb3738 FB |
877 | } |
878 | ||
03ff3ca3 | 879 | #if defined(__linux__) |
19cb3738 FB |
880 | /* Note: we do not have a reliable method to detect if the floppy is |
881 | present. The current method is to try to open the floppy at every | |
882 | I/O and to keep it opened during a few hundreds of ms. */ | |
883 | static int fd_open(BlockDriverState *bs) | |
884 | { | |
885 | BDRVRawState *s = bs->opaque; | |
886 | int last_media_present; | |
887 | ||
888 | if (s->type != FTYPE_FD) | |
889 | return 0; | |
890 | last_media_present = (s->fd >= 0); | |
5fafdf24 | 891 | if (s->fd >= 0 && |
19cb3738 FB |
892 | (qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) { |
893 | close(s->fd); | |
894 | s->fd = -1; | |
895 | #ifdef DEBUG_FLOPPY | |
896 | printf("Floppy closed\n"); | |
897 | #endif | |
898 | } | |
899 | if (s->fd < 0) { | |
5fafdf24 | 900 | if (s->fd_got_error && |
19cb3738 FB |
901 | (qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) { |
902 | #ifdef DEBUG_FLOPPY | |
903 | printf("No floppy (open delayed)\n"); | |
904 | #endif | |
905 | return -EIO; | |
906 | } | |
0e1d8f4c | 907 | s->fd = open(bs->filename, s->open_flags & ~O_NONBLOCK); |
19cb3738 FB |
908 | if (s->fd < 0) { |
909 | s->fd_error_time = qemu_get_clock(rt_clock); | |
910 | s->fd_got_error = 1; | |
911 | if (last_media_present) | |
912 | s->fd_media_changed = 1; | |
913 | #ifdef DEBUG_FLOPPY | |
914 | printf("No floppy\n"); | |
915 | #endif | |
916 | return -EIO; | |
917 | } | |
918 | #ifdef DEBUG_FLOPPY | |
919 | printf("Floppy opened\n"); | |
920 | #endif | |
921 | } | |
922 | if (!last_media_present) | |
923 | s->fd_media_changed = 1; | |
924 | s->fd_open_time = qemu_get_clock(rt_clock); | |
925 | s->fd_got_error = 0; | |
926 | return 0; | |
927 | } | |
19cb3738 | 928 | |
63ec93db | 929 | static int hdev_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
985a03b0 TS |
930 | { |
931 | BDRVRawState *s = bs->opaque; | |
932 | ||
933 | return ioctl(s->fd, req, buf); | |
934 | } | |
221f715d | 935 | |
63ec93db | 936 | static BlockDriverAIOCB *hdev_aio_ioctl(BlockDriverState *bs, |
221f715d AL |
937 | unsigned long int req, void *buf, |
938 | BlockDriverCompletionFunc *cb, void *opaque) | |
939 | { | |
f141eafe | 940 | BDRVRawState *s = bs->opaque; |
221f715d | 941 | |
f141eafe AL |
942 | if (fd_open(bs) < 0) |
943 | return NULL; | |
9ef91a67 | 944 | return paio_ioctl(bs, s->fd, req, buf, cb, opaque); |
221f715d AL |
945 | } |
946 | ||
a167ba50 | 947 | #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
9f23011a BS |
948 | static int fd_open(BlockDriverState *bs) |
949 | { | |
950 | BDRVRawState *s = bs->opaque; | |
951 | ||
952 | /* this is just to ensure s->fd is sane (its called by io ops) */ | |
953 | if (s->fd >= 0) | |
954 | return 0; | |
955 | return -EIO; | |
956 | } | |
9f23011a | 957 | #else /* !linux && !FreeBSD */ |
19cb3738 | 958 | |
08af02e2 AL |
959 | static int fd_open(BlockDriverState *bs) |
960 | { | |
961 | return 0; | |
962 | } | |
963 | ||
221f715d | 964 | #endif /* !linux && !FreeBSD */ |
04eeb8b6 | 965 | |
0e7e1989 | 966 | static int hdev_create(const char *filename, QEMUOptionParameter *options) |
93c65b47 AL |
967 | { |
968 | int fd; | |
969 | int ret = 0; | |
970 | struct stat stat_buf; | |
0e7e1989 | 971 | int64_t total_size = 0; |
93c65b47 | 972 | |
0e7e1989 KW |
973 | /* Read out options */ |
974 | while (options && options->name) { | |
975 | if (!strcmp(options->name, "size")) { | |
9040385d | 976 | total_size = options->value.n / BDRV_SECTOR_SIZE; |
0e7e1989 KW |
977 | } |
978 | options++; | |
979 | } | |
93c65b47 AL |
980 | |
981 | fd = open(filename, O_WRONLY | O_BINARY); | |
982 | if (fd < 0) | |
57e69b7d | 983 | return -errno; |
93c65b47 AL |
984 | |
985 | if (fstat(fd, &stat_buf) < 0) | |
57e69b7d | 986 | ret = -errno; |
4099df58 | 987 | else if (!S_ISBLK(stat_buf.st_mode) && !S_ISCHR(stat_buf.st_mode)) |
57e69b7d | 988 | ret = -ENODEV; |
9040385d | 989 | else if (lseek(fd, 0, SEEK_END) < total_size * BDRV_SECTOR_SIZE) |
93c65b47 AL |
990 | ret = -ENOSPC; |
991 | ||
992 | close(fd); | |
993 | return ret; | |
994 | } | |
995 | ||
5efa9d5a | 996 | static BlockDriver bdrv_host_device = { |
0b4ce02e | 997 | .format_name = "host_device", |
84a12e66 | 998 | .protocol_name = "host_device", |
0b4ce02e KW |
999 | .instance_size = sizeof(BDRVRawState), |
1000 | .bdrv_probe_device = hdev_probe_device, | |
66f82cee | 1001 | .bdrv_file_open = hdev_open, |
0b4ce02e | 1002 | .bdrv_close = raw_close, |
93c65b47 | 1003 | .bdrv_create = hdev_create, |
0b4ce02e | 1004 | .create_options = raw_create_options, |
12c09b8c | 1005 | .no_zero_init = 1, |
0b4ce02e | 1006 | .bdrv_flush = raw_flush, |
3b46e624 | 1007 | |
f141eafe AL |
1008 | .bdrv_aio_readv = raw_aio_readv, |
1009 | .bdrv_aio_writev = raw_aio_writev, | |
b2e12bc6 | 1010 | .bdrv_aio_flush = raw_aio_flush, |
3c529d93 | 1011 | |
eda578e5 AL |
1012 | .bdrv_read = raw_read, |
1013 | .bdrv_write = raw_write, | |
e60f469c | 1014 | .bdrv_getlength = raw_getlength, |
19cb3738 | 1015 | |
f3a5d3f8 | 1016 | /* generic scsi device */ |
63ec93db CH |
1017 | #ifdef __linux__ |
1018 | .bdrv_ioctl = hdev_ioctl, | |
63ec93db CH |
1019 | .bdrv_aio_ioctl = hdev_aio_ioctl, |
1020 | #endif | |
f3a5d3f8 CH |
1021 | }; |
1022 | ||
1023 | #ifdef __linux__ | |
1024 | static int floppy_open(BlockDriverState *bs, const char *filename, int flags) | |
1025 | { | |
1026 | BDRVRawState *s = bs->opaque; | |
1027 | int ret; | |
1028 | ||
f3a5d3f8 | 1029 | s->type = FTYPE_FD; |
f3a5d3f8 | 1030 | |
19a3da7f BS |
1031 | /* open will not fail even if no floppy is inserted, so add O_NONBLOCK */ |
1032 | ret = raw_open_common(bs, filename, flags, O_NONBLOCK); | |
f3a5d3f8 CH |
1033 | if (ret) |
1034 | return ret; | |
1035 | ||
1036 | /* close fd so that we can reopen it as needed */ | |
1037 | close(s->fd); | |
1038 | s->fd = -1; | |
1039 | s->fd_media_changed = 1; | |
1040 | ||
1041 | return 0; | |
1042 | } | |
1043 | ||
508c7cb3 CH |
1044 | static int floppy_probe_device(const char *filename) |
1045 | { | |
2ebf7c4b CR |
1046 | int fd, ret; |
1047 | int prio = 0; | |
1048 | struct floppy_struct fdparam; | |
1049 | ||
508c7cb3 | 1050 | if (strstart(filename, "/dev/fd", NULL)) |
2ebf7c4b CR |
1051 | prio = 50; |
1052 | ||
1053 | fd = open(filename, O_RDONLY | O_NONBLOCK); | |
1054 | if (fd < 0) { | |
1055 | goto out; | |
1056 | } | |
1057 | ||
1058 | /* Attempt to detect via a floppy specific ioctl */ | |
1059 | ret = ioctl(fd, FDGETPRM, &fdparam); | |
1060 | if (ret >= 0) | |
1061 | prio = 100; | |
1062 | ||
1063 | close(fd); | |
1064 | out: | |
1065 | return prio; | |
508c7cb3 CH |
1066 | } |
1067 | ||
1068 | ||
f3a5d3f8 CH |
1069 | static int floppy_is_inserted(BlockDriverState *bs) |
1070 | { | |
1071 | return fd_open(bs) >= 0; | |
1072 | } | |
1073 | ||
1074 | static int floppy_media_changed(BlockDriverState *bs) | |
1075 | { | |
1076 | BDRVRawState *s = bs->opaque; | |
1077 | int ret; | |
1078 | ||
1079 | /* | |
1080 | * XXX: we do not have a true media changed indication. | |
1081 | * It does not work if the floppy is changed without trying to read it. | |
1082 | */ | |
1083 | fd_open(bs); | |
1084 | ret = s->fd_media_changed; | |
1085 | s->fd_media_changed = 0; | |
1086 | #ifdef DEBUG_FLOPPY | |
1087 | printf("Floppy changed=%d\n", ret); | |
1088 | #endif | |
1089 | return ret; | |
1090 | } | |
1091 | ||
1092 | static int floppy_eject(BlockDriverState *bs, int eject_flag) | |
1093 | { | |
1094 | BDRVRawState *s = bs->opaque; | |
1095 | int fd; | |
1096 | ||
1097 | if (s->fd >= 0) { | |
1098 | close(s->fd); | |
1099 | s->fd = -1; | |
1100 | } | |
1101 | fd = open(bs->filename, s->open_flags | O_NONBLOCK); | |
1102 | if (fd >= 0) { | |
1103 | if (ioctl(fd, FDEJECT, 0) < 0) | |
1104 | perror("FDEJECT"); | |
1105 | close(fd); | |
1106 | } | |
1107 | ||
1108 | return 0; | |
1109 | } | |
1110 | ||
1111 | static BlockDriver bdrv_host_floppy = { | |
1112 | .format_name = "host_floppy", | |
84a12e66 | 1113 | .protocol_name = "host_floppy", |
f3a5d3f8 | 1114 | .instance_size = sizeof(BDRVRawState), |
508c7cb3 | 1115 | .bdrv_probe_device = floppy_probe_device, |
66f82cee | 1116 | .bdrv_file_open = floppy_open, |
f3a5d3f8 CH |
1117 | .bdrv_close = raw_close, |
1118 | .bdrv_create = hdev_create, | |
0b4ce02e | 1119 | .create_options = raw_create_options, |
12c09b8c | 1120 | .no_zero_init = 1, |
f3a5d3f8 CH |
1121 | .bdrv_flush = raw_flush, |
1122 | ||
f3a5d3f8 CH |
1123 | .bdrv_aio_readv = raw_aio_readv, |
1124 | .bdrv_aio_writev = raw_aio_writev, | |
b2e12bc6 | 1125 | .bdrv_aio_flush = raw_aio_flush, |
f3a5d3f8 CH |
1126 | |
1127 | .bdrv_read = raw_read, | |
1128 | .bdrv_write = raw_write, | |
1129 | .bdrv_getlength = raw_getlength, | |
1130 | ||
1131 | /* removable device support */ | |
1132 | .bdrv_is_inserted = floppy_is_inserted, | |
1133 | .bdrv_media_changed = floppy_media_changed, | |
1134 | .bdrv_eject = floppy_eject, | |
f3a5d3f8 CH |
1135 | }; |
1136 | ||
1137 | static int cdrom_open(BlockDriverState *bs, const char *filename, int flags) | |
1138 | { | |
1139 | BDRVRawState *s = bs->opaque; | |
1140 | ||
f3a5d3f8 CH |
1141 | s->type = FTYPE_CD; |
1142 | ||
19a3da7f BS |
1143 | /* open will not fail even if no CD is inserted, so add O_NONBLOCK */ |
1144 | return raw_open_common(bs, filename, flags, O_NONBLOCK); | |
f3a5d3f8 CH |
1145 | } |
1146 | ||
508c7cb3 CH |
1147 | static int cdrom_probe_device(const char *filename) |
1148 | { | |
3baf720e CR |
1149 | int fd, ret; |
1150 | int prio = 0; | |
1151 | ||
508c7cb3 | 1152 | if (strstart(filename, "/dev/cd", NULL)) |
3baf720e CR |
1153 | prio = 50; |
1154 | ||
1155 | fd = open(filename, O_RDONLY | O_NONBLOCK); | |
1156 | if (fd < 0) { | |
1157 | goto out; | |
1158 | } | |
1159 | ||
1160 | /* Attempt to detect via a CDROM specific ioctl */ | |
1161 | ret = ioctl(fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); | |
1162 | if (ret >= 0) | |
1163 | prio = 100; | |
1164 | ||
1165 | close(fd); | |
1166 | out: | |
1167 | return prio; | |
508c7cb3 CH |
1168 | } |
1169 | ||
f3a5d3f8 CH |
1170 | static int cdrom_is_inserted(BlockDriverState *bs) |
1171 | { | |
1172 | BDRVRawState *s = bs->opaque; | |
1173 | int ret; | |
1174 | ||
1175 | ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); | |
1176 | if (ret == CDS_DISC_OK) | |
1177 | return 1; | |
1178 | return 0; | |
1179 | } | |
1180 | ||
1181 | static int cdrom_eject(BlockDriverState *bs, int eject_flag) | |
1182 | { | |
1183 | BDRVRawState *s = bs->opaque; | |
1184 | ||
1185 | if (eject_flag) { | |
1186 | if (ioctl(s->fd, CDROMEJECT, NULL) < 0) | |
1187 | perror("CDROMEJECT"); | |
1188 | } else { | |
1189 | if (ioctl(s->fd, CDROMCLOSETRAY, NULL) < 0) | |
1190 | perror("CDROMEJECT"); | |
1191 | } | |
1192 | ||
1193 | return 0; | |
1194 | } | |
1195 | ||
1196 | static int cdrom_set_locked(BlockDriverState *bs, int locked) | |
1197 | { | |
1198 | BDRVRawState *s = bs->opaque; | |
1199 | ||
1200 | if (ioctl(s->fd, CDROM_LOCKDOOR, locked) < 0) { | |
1201 | /* | |
1202 | * Note: an error can happen if the distribution automatically | |
1203 | * mounts the CD-ROM | |
1204 | */ | |
1205 | /* perror("CDROM_LOCKDOOR"); */ | |
1206 | } | |
1207 | ||
1208 | return 0; | |
1209 | } | |
1210 | ||
1211 | static BlockDriver bdrv_host_cdrom = { | |
1212 | .format_name = "host_cdrom", | |
84a12e66 | 1213 | .protocol_name = "host_cdrom", |
f3a5d3f8 | 1214 | .instance_size = sizeof(BDRVRawState), |
508c7cb3 | 1215 | .bdrv_probe_device = cdrom_probe_device, |
66f82cee | 1216 | .bdrv_file_open = cdrom_open, |
f3a5d3f8 CH |
1217 | .bdrv_close = raw_close, |
1218 | .bdrv_create = hdev_create, | |
0b4ce02e | 1219 | .create_options = raw_create_options, |
12c09b8c | 1220 | .no_zero_init = 1, |
f3a5d3f8 CH |
1221 | .bdrv_flush = raw_flush, |
1222 | ||
f3a5d3f8 CH |
1223 | .bdrv_aio_readv = raw_aio_readv, |
1224 | .bdrv_aio_writev = raw_aio_writev, | |
b2e12bc6 | 1225 | .bdrv_aio_flush = raw_aio_flush, |
f3a5d3f8 CH |
1226 | |
1227 | .bdrv_read = raw_read, | |
1228 | .bdrv_write = raw_write, | |
1229 | .bdrv_getlength = raw_getlength, | |
1230 | ||
1231 | /* removable device support */ | |
1232 | .bdrv_is_inserted = cdrom_is_inserted, | |
1233 | .bdrv_eject = cdrom_eject, | |
1234 | .bdrv_set_locked = cdrom_set_locked, | |
1235 | ||
1236 | /* generic scsi device */ | |
63ec93db | 1237 | .bdrv_ioctl = hdev_ioctl, |
63ec93db | 1238 | .bdrv_aio_ioctl = hdev_aio_ioctl, |
f3a5d3f8 CH |
1239 | }; |
1240 | #endif /* __linux__ */ | |
1241 | ||
a167ba50 | 1242 | #if defined (__FreeBSD__) || defined(__FreeBSD_kernel__) |
f3a5d3f8 CH |
1243 | static int cdrom_open(BlockDriverState *bs, const char *filename, int flags) |
1244 | { | |
1245 | BDRVRawState *s = bs->opaque; | |
1246 | int ret; | |
1247 | ||
1248 | s->type = FTYPE_CD; | |
1249 | ||
19a3da7f | 1250 | ret = raw_open_common(bs, filename, flags, 0); |
f3a5d3f8 CH |
1251 | if (ret) |
1252 | return ret; | |
1253 | ||
1254 | /* make sure the door isnt locked at this time */ | |
1255 | ioctl(s->fd, CDIOCALLOW); | |
1256 | return 0; | |
1257 | } | |
1258 | ||
508c7cb3 CH |
1259 | static int cdrom_probe_device(const char *filename) |
1260 | { | |
1261 | if (strstart(filename, "/dev/cd", NULL) || | |
1262 | strstart(filename, "/dev/acd", NULL)) | |
1263 | return 100; | |
1264 | return 0; | |
1265 | } | |
1266 | ||
f3a5d3f8 CH |
1267 | static int cdrom_reopen(BlockDriverState *bs) |
1268 | { | |
1269 | BDRVRawState *s = bs->opaque; | |
1270 | int fd; | |
1271 | ||
1272 | /* | |
1273 | * Force reread of possibly changed/newly loaded disc, | |
1274 | * FreeBSD seems to not notice sometimes... | |
1275 | */ | |
1276 | if (s->fd >= 0) | |
1277 | close(s->fd); | |
1278 | fd = open(bs->filename, s->open_flags, 0644); | |
1279 | if (fd < 0) { | |
1280 | s->fd = -1; | |
1281 | return -EIO; | |
1282 | } | |
1283 | s->fd = fd; | |
1284 | ||
1285 | /* make sure the door isnt locked at this time */ | |
1286 | ioctl(s->fd, CDIOCALLOW); | |
1287 | return 0; | |
1288 | } | |
1289 | ||
1290 | static int cdrom_is_inserted(BlockDriverState *bs) | |
1291 | { | |
1292 | return raw_getlength(bs) > 0; | |
1293 | } | |
1294 | ||
1295 | static int cdrom_eject(BlockDriverState *bs, int eject_flag) | |
1296 | { | |
1297 | BDRVRawState *s = bs->opaque; | |
1298 | ||
1299 | if (s->fd < 0) | |
1300 | return -ENOTSUP; | |
1301 | ||
1302 | (void) ioctl(s->fd, CDIOCALLOW); | |
1303 | ||
1304 | if (eject_flag) { | |
1305 | if (ioctl(s->fd, CDIOCEJECT) < 0) | |
1306 | perror("CDIOCEJECT"); | |
1307 | } else { | |
1308 | if (ioctl(s->fd, CDIOCCLOSE) < 0) | |
1309 | perror("CDIOCCLOSE"); | |
1310 | } | |
1311 | ||
1312 | if (cdrom_reopen(bs) < 0) | |
1313 | return -ENOTSUP; | |
1314 | return 0; | |
1315 | } | |
1316 | ||
1317 | static int cdrom_set_locked(BlockDriverState *bs, int locked) | |
1318 | { | |
1319 | BDRVRawState *s = bs->opaque; | |
1320 | ||
1321 | if (s->fd < 0) | |
1322 | return -ENOTSUP; | |
1323 | if (ioctl(s->fd, (locked ? CDIOCPREVENT : CDIOCALLOW)) < 0) { | |
1324 | /* | |
1325 | * Note: an error can happen if the distribution automatically | |
1326 | * mounts the CD-ROM | |
1327 | */ | |
1328 | /* perror("CDROM_LOCKDOOR"); */ | |
1329 | } | |
1330 | ||
1331 | return 0; | |
1332 | } | |
1333 | ||
1334 | static BlockDriver bdrv_host_cdrom = { | |
1335 | .format_name = "host_cdrom", | |
84a12e66 | 1336 | .protocol_name = "host_cdrom", |
f3a5d3f8 | 1337 | .instance_size = sizeof(BDRVRawState), |
508c7cb3 | 1338 | .bdrv_probe_device = cdrom_probe_device, |
66f82cee | 1339 | .bdrv_file_open = cdrom_open, |
f3a5d3f8 CH |
1340 | .bdrv_close = raw_close, |
1341 | .bdrv_create = hdev_create, | |
0b4ce02e | 1342 | .create_options = raw_create_options, |
12c09b8c | 1343 | .no_zero_init = 1, |
f3a5d3f8 CH |
1344 | .bdrv_flush = raw_flush, |
1345 | ||
f3a5d3f8 CH |
1346 | .bdrv_aio_readv = raw_aio_readv, |
1347 | .bdrv_aio_writev = raw_aio_writev, | |
b2e12bc6 | 1348 | .bdrv_aio_flush = raw_aio_flush, |
f3a5d3f8 CH |
1349 | |
1350 | .bdrv_read = raw_read, | |
1351 | .bdrv_write = raw_write, | |
1352 | .bdrv_getlength = raw_getlength, | |
1353 | ||
19cb3738 | 1354 | /* removable device support */ |
f3a5d3f8 CH |
1355 | .bdrv_is_inserted = cdrom_is_inserted, |
1356 | .bdrv_eject = cdrom_eject, | |
1357 | .bdrv_set_locked = cdrom_set_locked, | |
19cb3738 | 1358 | }; |
f3a5d3f8 | 1359 | #endif /* __FreeBSD__ */ |
5efa9d5a | 1360 | |
84a12e66 | 1361 | static void bdrv_file_init(void) |
5efa9d5a | 1362 | { |
508c7cb3 CH |
1363 | /* |
1364 | * Register all the drivers. Note that order is important, the driver | |
1365 | * registered last will get probed first. | |
1366 | */ | |
84a12e66 | 1367 | bdrv_register(&bdrv_file); |
5efa9d5a | 1368 | bdrv_register(&bdrv_host_device); |
f3a5d3f8 CH |
1369 | #ifdef __linux__ |
1370 | bdrv_register(&bdrv_host_floppy); | |
1371 | bdrv_register(&bdrv_host_cdrom); | |
1372 | #endif | |
a167ba50 | 1373 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
f3a5d3f8 CH |
1374 | bdrv_register(&bdrv_host_cdrom); |
1375 | #endif | |
5efa9d5a AL |
1376 | } |
1377 | ||
84a12e66 | 1378 | block_init(bdrv_file_init); |