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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 | 27 | #include "block_int.h" |
5efa9d5a | 28 | #include "module.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 | 57 | #include <sys/disk.h> |
9f23011a | 58 | #include <sys/cdio.h> |
1cb6c3fd | 59 | #endif |
83f64091 | 60 | |
128ab2ff BS |
61 | #ifdef __OpenBSD__ |
62 | #include <sys/ioctl.h> | |
63 | #include <sys/disklabel.h> | |
64 | #include <sys/dkio.h> | |
65 | #endif | |
66 | ||
c5e97233 BS |
67 | #ifdef __DragonFly__ |
68 | #include <sys/ioctl.h> | |
69 | #include <sys/diskslice.h> | |
70 | #endif | |
71 | ||
19cb3738 | 72 | //#define DEBUG_FLOPPY |
83f64091 | 73 | |
faf07963 | 74 | //#define DEBUG_BLOCK |
03ff3ca3 | 75 | #if defined(DEBUG_BLOCK) |
001faf32 BS |
76 | #define DEBUG_BLOCK_PRINT(formatCstr, ...) do { if (qemu_log_enabled()) \ |
77 | { qemu_log(formatCstr, ## __VA_ARGS__); qemu_log_flush(); } } while (0) | |
8c05dbf9 | 78 | #else |
001faf32 | 79 | #define DEBUG_BLOCK_PRINT(formatCstr, ...) |
8c05dbf9 TS |
80 | #endif |
81 | ||
f6465578 AL |
82 | /* OS X does not have O_DSYNC */ |
83 | #ifndef O_DSYNC | |
7ab064d2 | 84 | #define O_DSYNC O_SYNC |
f6465578 AL |
85 | #endif |
86 | ||
9f7965c7 AL |
87 | /* Approximate O_DIRECT with O_DSYNC if O_DIRECT isn't available */ |
88 | #ifndef O_DIRECT | |
89 | #define O_DIRECT O_DSYNC | |
90 | #endif | |
91 | ||
19cb3738 FB |
92 | #define FTYPE_FILE 0 |
93 | #define FTYPE_CD 1 | |
94 | #define FTYPE_FD 2 | |
83f64091 | 95 | |
bed5cc52 FB |
96 | #define ALIGNED_BUFFER_SIZE (32 * 512) |
97 | ||
19cb3738 FB |
98 | /* if the FD is not accessed during that time (in ms), we try to |
99 | reopen it to see if the disk has been changed */ | |
100 | #define FD_OPEN_TIMEOUT 1000 | |
83f64091 | 101 | |
19cb3738 FB |
102 | typedef struct BDRVRawState { |
103 | int fd; | |
104 | int type; | |
8c05dbf9 | 105 | unsigned int lseek_err_cnt; |
0e1d8f4c | 106 | int open_flags; |
19cb3738 FB |
107 | #if defined(__linux__) |
108 | /* linux floppy specific */ | |
19cb3738 FB |
109 | int64_t fd_open_time; |
110 | int64_t fd_error_time; | |
111 | int fd_got_error; | |
112 | int fd_media_changed; | |
83f64091 | 113 | #endif |
bed5cc52 | 114 | uint8_t* aligned_buf; |
19cb3738 FB |
115 | } BDRVRawState; |
116 | ||
a76bab49 AL |
117 | static int posix_aio_init(void); |
118 | ||
19cb3738 | 119 | static int fd_open(BlockDriverState *bs); |
83f64091 | 120 | |
9f23011a | 121 | #if defined(__FreeBSD__) |
f3a5d3f8 | 122 | static int cdrom_reopen(BlockDriverState *bs); |
9f23011a BS |
123 | #endif |
124 | ||
90babde0 CH |
125 | static int raw_open_common(BlockDriverState *bs, const char *filename, |
126 | int flags) | |
83f64091 FB |
127 | { |
128 | BDRVRawState *s = bs->opaque; | |
0e1d8f4c | 129 | int fd, ret; |
83f64091 | 130 | |
a76bab49 AL |
131 | posix_aio_init(); |
132 | ||
8c05dbf9 TS |
133 | s->lseek_err_cnt = 0; |
134 | ||
0e1d8f4c | 135 | s->open_flags |= O_BINARY; |
83f64091 | 136 | if ((flags & BDRV_O_ACCESS) == O_RDWR) { |
0e1d8f4c | 137 | s->open_flags |= O_RDWR; |
83f64091 | 138 | } else { |
0e1d8f4c | 139 | s->open_flags |= O_RDONLY; |
83f64091 FB |
140 | bs->read_only = 1; |
141 | } | |
9f7965c7 AL |
142 | |
143 | /* Use O_DSYNC for write-through caching, no flags for write-back caching, | |
144 | * and O_DIRECT for no caching. */ | |
145 | if ((flags & BDRV_O_NOCACHE)) | |
0e1d8f4c | 146 | s->open_flags |= O_DIRECT; |
9f7965c7 | 147 | else if (!(flags & BDRV_O_CACHE_WB)) |
0e1d8f4c | 148 | s->open_flags |= O_DSYNC; |
83f64091 | 149 | |
90babde0 | 150 | s->fd = -1; |
0e1d8f4c | 151 | fd = open(filename, s->open_flags, 0644); |
19cb3738 FB |
152 | if (fd < 0) { |
153 | ret = -errno; | |
154 | if (ret == -EROFS) | |
155 | ret = -EACCES; | |
156 | return ret; | |
157 | } | |
83f64091 | 158 | s->fd = fd; |
bed5cc52 | 159 | s->aligned_buf = NULL; |
9f7965c7 | 160 | if ((flags & BDRV_O_NOCACHE)) { |
e268ca52 | 161 | s->aligned_buf = qemu_blockalign(bs, ALIGNED_BUFFER_SIZE); |
bed5cc52 FB |
162 | if (s->aligned_buf == NULL) { |
163 | ret = -errno; | |
164 | close(fd); | |
165 | return ret; | |
166 | } | |
167 | } | |
83f64091 FB |
168 | return 0; |
169 | } | |
170 | ||
90babde0 CH |
171 | static int raw_open(BlockDriverState *bs, const char *filename, int flags) |
172 | { | |
173 | BDRVRawState *s = bs->opaque; | |
174 | ||
175 | s->type = FTYPE_FILE; | |
176 | if (flags & BDRV_O_CREAT) | |
177 | s->open_flags |= O_CREAT | O_TRUNC; | |
178 | ||
179 | return raw_open_common(bs, filename, flags); | |
180 | } | |
181 | ||
83f64091 FB |
182 | /* XXX: use host sector size if necessary with: |
183 | #ifdef DIOCGSECTORSIZE | |
184 | { | |
185 | unsigned int sectorsize = 512; | |
186 | if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) && | |
187 | sectorsize > bufsize) | |
188 | bufsize = sectorsize; | |
189 | } | |
190 | #endif | |
191 | #ifdef CONFIG_COCOA | |
192 | u_int32_t blockSize = 512; | |
193 | if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) { | |
194 | bufsize = blockSize; | |
195 | } | |
196 | #endif | |
197 | */ | |
198 | ||
bed5cc52 FB |
199 | /* |
200 | * offset and count are in bytes, but must be multiples of 512 for files | |
201 | * opened with O_DIRECT. buf must be aligned to 512 bytes then. | |
202 | * | |
203 | * This function may be called without alignment if the caller ensures | |
204 | * that O_DIRECT is not in effect. | |
205 | */ | |
206 | static int raw_pread_aligned(BlockDriverState *bs, int64_t offset, | |
83f64091 FB |
207 | uint8_t *buf, int count) |
208 | { | |
209 | BDRVRawState *s = bs->opaque; | |
210 | int ret; | |
3b46e624 | 211 | |
19cb3738 FB |
212 | ret = fd_open(bs); |
213 | if (ret < 0) | |
214 | return ret; | |
215 | ||
985a03b0 | 216 | if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
8c05dbf9 TS |
217 | ++(s->lseek_err_cnt); |
218 | if(s->lseek_err_cnt <= 10) { | |
92868412 JM |
219 | DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
220 | "] lseek failed : %d = %s\n", | |
8c05dbf9 TS |
221 | s->fd, bs->filename, offset, buf, count, |
222 | bs->total_sectors, errno, strerror(errno)); | |
223 | } | |
224 | return -1; | |
225 | } | |
226 | s->lseek_err_cnt=0; | |
227 | ||
83f64091 | 228 | ret = read(s->fd, buf, count); |
8c05dbf9 TS |
229 | if (ret == count) |
230 | goto label__raw_read__success; | |
231 | ||
92868412 JM |
232 | DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
233 | "] read failed %d : %d = %s\n", | |
8c05dbf9 TS |
234 | s->fd, bs->filename, offset, buf, count, |
235 | bs->total_sectors, ret, errno, strerror(errno)); | |
236 | ||
237 | /* Try harder for CDrom. */ | |
238 | if (bs->type == BDRV_TYPE_CDROM) { | |
239 | lseek(s->fd, offset, SEEK_SET); | |
240 | ret = read(s->fd, buf, count); | |
241 | if (ret == count) | |
242 | goto label__raw_read__success; | |
243 | lseek(s->fd, offset, SEEK_SET); | |
244 | ret = read(s->fd, buf, count); | |
245 | if (ret == count) | |
246 | goto label__raw_read__success; | |
247 | ||
92868412 JM |
248 | DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
249 | "] retry read failed %d : %d = %s\n", | |
8c05dbf9 TS |
250 | s->fd, bs->filename, offset, buf, count, |
251 | bs->total_sectors, ret, errno, strerror(errno)); | |
252 | } | |
253 | ||
8c05dbf9 TS |
254 | label__raw_read__success: |
255 | ||
94c6d6d8 | 256 | return (ret < 0) ? -errno : ret; |
83f64091 FB |
257 | } |
258 | ||
bed5cc52 FB |
259 | /* |
260 | * offset and count are in bytes, but must be multiples of 512 for files | |
261 | * opened with O_DIRECT. buf must be aligned to 512 bytes then. | |
262 | * | |
263 | * This function may be called without alignment if the caller ensures | |
264 | * that O_DIRECT is not in effect. | |
265 | */ | |
266 | static int raw_pwrite_aligned(BlockDriverState *bs, int64_t offset, | |
83f64091 FB |
267 | const uint8_t *buf, int count) |
268 | { | |
269 | BDRVRawState *s = bs->opaque; | |
270 | int ret; | |
3b46e624 | 271 | |
19cb3738 FB |
272 | ret = fd_open(bs); |
273 | if (ret < 0) | |
4141d4c2 | 274 | return -errno; |
19cb3738 | 275 | |
985a03b0 | 276 | if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
8c05dbf9 TS |
277 | ++(s->lseek_err_cnt); |
278 | if(s->lseek_err_cnt) { | |
92868412 JM |
279 | DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" |
280 | PRId64 "] lseek failed : %d = %s\n", | |
8c05dbf9 TS |
281 | s->fd, bs->filename, offset, buf, count, |
282 | bs->total_sectors, errno, strerror(errno)); | |
283 | } | |
4141d4c2 | 284 | return -EIO; |
8c05dbf9 TS |
285 | } |
286 | s->lseek_err_cnt = 0; | |
287 | ||
83f64091 | 288 | ret = write(s->fd, buf, count); |
8c05dbf9 TS |
289 | if (ret == count) |
290 | goto label__raw_write__success; | |
291 | ||
92868412 JM |
292 | DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
293 | "] write failed %d : %d = %s\n", | |
8c05dbf9 TS |
294 | s->fd, bs->filename, offset, buf, count, |
295 | bs->total_sectors, ret, errno, strerror(errno)); | |
296 | ||
8c05dbf9 TS |
297 | label__raw_write__success: |
298 | ||
4141d4c2 | 299 | return (ret < 0) ? -errno : ret; |
83f64091 FB |
300 | } |
301 | ||
bed5cc52 | 302 | |
bed5cc52 FB |
303 | /* |
304 | * offset and count are in bytes and possibly not aligned. For files opened | |
305 | * with O_DIRECT, necessary alignments are ensured before calling | |
306 | * raw_pread_aligned to do the actual read. | |
307 | */ | |
308 | static int raw_pread(BlockDriverState *bs, int64_t offset, | |
309 | uint8_t *buf, int count) | |
310 | { | |
311 | BDRVRawState *s = bs->opaque; | |
312 | int size, ret, shift, sum; | |
313 | ||
314 | sum = 0; | |
315 | ||
316 | if (s->aligned_buf != NULL) { | |
317 | ||
318 | if (offset & 0x1ff) { | |
319 | /* align offset on a 512 bytes boundary */ | |
320 | ||
321 | shift = offset & 0x1ff; | |
322 | size = (shift + count + 0x1ff) & ~0x1ff; | |
323 | if (size > ALIGNED_BUFFER_SIZE) | |
324 | size = ALIGNED_BUFFER_SIZE; | |
325 | ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, size); | |
326 | if (ret < 0) | |
327 | return ret; | |
328 | ||
329 | size = 512 - shift; | |
330 | if (size > count) | |
331 | size = count; | |
332 | memcpy(buf, s->aligned_buf + shift, size); | |
333 | ||
334 | buf += size; | |
335 | offset += size; | |
336 | count -= size; | |
337 | sum += size; | |
338 | ||
339 | if (count == 0) | |
340 | return sum; | |
341 | } | |
342 | if (count & 0x1ff || (uintptr_t) buf & 0x1ff) { | |
343 | ||
344 | /* read on aligned buffer */ | |
345 | ||
346 | while (count) { | |
347 | ||
348 | size = (count + 0x1ff) & ~0x1ff; | |
349 | if (size > ALIGNED_BUFFER_SIZE) | |
350 | size = ALIGNED_BUFFER_SIZE; | |
351 | ||
352 | ret = raw_pread_aligned(bs, offset, s->aligned_buf, size); | |
353 | if (ret < 0) | |
354 | return ret; | |
355 | ||
356 | size = ret; | |
357 | if (size > count) | |
358 | size = count; | |
359 | ||
360 | memcpy(buf, s->aligned_buf, size); | |
361 | ||
362 | buf += size; | |
363 | offset += size; | |
364 | count -= size; | |
365 | sum += size; | |
366 | } | |
367 | ||
368 | return sum; | |
369 | } | |
370 | } | |
371 | ||
372 | return raw_pread_aligned(bs, offset, buf, count) + sum; | |
373 | } | |
374 | ||
eda578e5 AL |
375 | static int raw_read(BlockDriverState *bs, int64_t sector_num, |
376 | uint8_t *buf, int nb_sectors) | |
377 | { | |
537a1d4b AL |
378 | int ret; |
379 | ||
380 | ret = raw_pread(bs, sector_num * 512, buf, nb_sectors * 512); | |
381 | if (ret == (nb_sectors * 512)) | |
382 | ret = 0; | |
383 | return ret; | |
eda578e5 AL |
384 | } |
385 | ||
bed5cc52 FB |
386 | /* |
387 | * offset and count are in bytes and possibly not aligned. For files opened | |
388 | * with O_DIRECT, necessary alignments are ensured before calling | |
389 | * raw_pwrite_aligned to do the actual write. | |
390 | */ | |
391 | static int raw_pwrite(BlockDriverState *bs, int64_t offset, | |
392 | const uint8_t *buf, int count) | |
393 | { | |
394 | BDRVRawState *s = bs->opaque; | |
395 | int size, ret, shift, sum; | |
396 | ||
397 | sum = 0; | |
398 | ||
399 | if (s->aligned_buf != NULL) { | |
400 | ||
401 | if (offset & 0x1ff) { | |
402 | /* align offset on a 512 bytes boundary */ | |
403 | shift = offset & 0x1ff; | |
404 | ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, 512); | |
405 | if (ret < 0) | |
406 | return ret; | |
407 | ||
408 | size = 512 - shift; | |
409 | if (size > count) | |
410 | size = count; | |
411 | memcpy(s->aligned_buf + shift, buf, size); | |
412 | ||
413 | ret = raw_pwrite_aligned(bs, offset - shift, s->aligned_buf, 512); | |
414 | if (ret < 0) | |
415 | return ret; | |
416 | ||
417 | buf += size; | |
418 | offset += size; | |
419 | count -= size; | |
420 | sum += size; | |
421 | ||
422 | if (count == 0) | |
423 | return sum; | |
424 | } | |
425 | if (count & 0x1ff || (uintptr_t) buf & 0x1ff) { | |
426 | ||
427 | while ((size = (count & ~0x1ff)) != 0) { | |
428 | ||
429 | if (size > ALIGNED_BUFFER_SIZE) | |
430 | size = ALIGNED_BUFFER_SIZE; | |
431 | ||
432 | memcpy(s->aligned_buf, buf, size); | |
433 | ||
434 | ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, size); | |
435 | if (ret < 0) | |
436 | return ret; | |
437 | ||
438 | buf += ret; | |
439 | offset += ret; | |
440 | count -= ret; | |
441 | sum += ret; | |
442 | } | |
443 | /* here, count < 512 because (count & ~0x1ff) == 0 */ | |
444 | if (count) { | |
445 | ret = raw_pread_aligned(bs, offset, s->aligned_buf, 512); | |
446 | if (ret < 0) | |
447 | return ret; | |
448 | memcpy(s->aligned_buf, buf, count); | |
449 | ||
450 | ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, 512); | |
451 | if (ret < 0) | |
452 | return ret; | |
453 | if (count < ret) | |
454 | ret = count; | |
455 | ||
456 | sum += ret; | |
457 | } | |
458 | return sum; | |
459 | } | |
460 | } | |
461 | return raw_pwrite_aligned(bs, offset, buf, count) + sum; | |
462 | } | |
463 | ||
eda578e5 AL |
464 | static int raw_write(BlockDriverState *bs, int64_t sector_num, |
465 | const uint8_t *buf, int nb_sectors) | |
466 | { | |
537a1d4b AL |
467 | int ret; |
468 | ret = raw_pwrite(bs, sector_num * 512, buf, nb_sectors * 512); | |
469 | if (ret == (nb_sectors * 512)) | |
470 | ret = 0; | |
471 | return ret; | |
eda578e5 AL |
472 | } |
473 | ||
414f0dab | 474 | #ifdef CONFIG_AIO |
83f64091 | 475 | /***********************************************************/ |
19cb3738 | 476 | /* Unix AIO using POSIX AIO */ |
83f64091 FB |
477 | |
478 | typedef struct RawAIOCB { | |
ce1a14dc | 479 | BlockDriverAIOCB common; |
3c529d93 | 480 | struct qemu_paiocb aiocb; |
ce1a14dc | 481 | struct RawAIOCB *next; |
bed5cc52 | 482 | int ret; |
83f64091 FB |
483 | } RawAIOCB; |
484 | ||
a76bab49 AL |
485 | typedef struct PosixAioState |
486 | { | |
9e472e10 | 487 | int rfd, wfd; |
a76bab49 AL |
488 | RawAIOCB *first_aio; |
489 | } PosixAioState; | |
83f64091 | 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 | ||
e20e830b AL |
498 | /* read all bytes from signal pipe */ |
499 | for (;;) { | |
500 | char bytes[16]; | |
9e472e10 | 501 | |
e20e830b | 502 | len = read(s->rfd, bytes, sizeof(bytes)); |
2c41a5f9 | 503 | if (len == -1 && errno == EINTR) |
e20e830b AL |
504 | continue; /* try again */ |
505 | if (len == sizeof(bytes)) | |
506 | continue; /* more to read */ | |
507 | break; | |
508 | } | |
83f64091 FB |
509 | |
510 | for(;;) { | |
a76bab49 | 511 | pacb = &s->first_aio; |
83f64091 FB |
512 | for(;;) { |
513 | acb = *pacb; | |
514 | if (!acb) | |
515 | goto the_end; | |
3c529d93 | 516 | ret = qemu_paio_error(&acb->aiocb); |
83f64091 FB |
517 | if (ret == ECANCELED) { |
518 | /* remove the request */ | |
ce1a14dc PB |
519 | *pacb = acb->next; |
520 | qemu_aio_release(acb); | |
83f64091 FB |
521 | } else if (ret != EINPROGRESS) { |
522 | /* end of aio */ | |
523 | if (ret == 0) { | |
3c529d93 | 524 | ret = qemu_paio_return(&acb->aiocb); |
ce1a14dc | 525 | if (ret == acb->aiocb.aio_nbytes) |
83f64091 FB |
526 | ret = 0; |
527 | else | |
19cb3738 | 528 | ret = -EINVAL; |
83f64091 FB |
529 | } else { |
530 | ret = -ret; | |
531 | } | |
532 | /* remove the request */ | |
ce1a14dc | 533 | *pacb = acb->next; |
83f64091 | 534 | /* call the callback */ |
ce1a14dc PB |
535 | acb->common.cb(acb->common.opaque, ret); |
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]; |
3c529d93 | 570 | struct qemu_paioinit ai; |
a76bab49 AL |
571 | |
572 | if (posix_aio_state) | |
573 | return 0; | |
ad02ad6f | 574 | |
a76bab49 | 575 | s = qemu_malloc(sizeof(PosixAioState)); |
baf35cb9 | 576 | |
9e472e10 AL |
577 | sigfillset(&act.sa_mask); |
578 | act.sa_flags = 0; /* do not restart syscalls to interrupt select() */ | |
579 | act.sa_handler = aio_signal_handler; | |
580 | sigaction(SIGUSR2, &act, NULL); | |
581 | ||
a76bab49 | 582 | s->first_aio = NULL; |
9e472e10 AL |
583 | if (pipe(fds) == -1) { |
584 | fprintf(stderr, "failed to create pipe\n"); | |
27463101 AL |
585 | return -errno; |
586 | } | |
2c41a5f9 | 587 | |
9e472e10 AL |
588 | s->rfd = fds[0]; |
589 | s->wfd = fds[1]; | |
590 | ||
e20e830b | 591 | fcntl(s->rfd, F_SETFL, O_NONBLOCK); |
9e472e10 | 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 | |
3c529d93 AL |
596 | memset(&ai, 0, sizeof(ai)); |
597 | ai.aio_threads = 64; | |
598 | ai.aio_num = 64; | |
599 | qemu_paio_init(&ai); | |
acce87f9 | 600 | |
a76bab49 | 601 | posix_aio_state = s; |
6eb5733a | 602 | |
a76bab49 | 603 | return 0; |
83f64091 FB |
604 | } |
605 | ||
c16b5a2c CH |
606 | static void raw_aio_remove(RawAIOCB *acb) |
607 | { | |
608 | RawAIOCB **pacb; | |
609 | ||
610 | /* remove the callback from the queue */ | |
611 | pacb = &posix_aio_state->first_aio; | |
612 | for(;;) { | |
613 | if (*pacb == NULL) { | |
614 | fprintf(stderr, "raw_aio_remove: aio request not found!\n"); | |
615 | break; | |
616 | } else if (*pacb == acb) { | |
617 | *pacb = acb->next; | |
618 | qemu_aio_release(acb); | |
619 | break; | |
620 | } | |
621 | pacb = &(*pacb)->next; | |
622 | } | |
623 | } | |
624 | ||
625 | static void raw_aio_cancel(BlockDriverAIOCB *blockacb) | |
626 | { | |
627 | int ret; | |
628 | RawAIOCB *acb = (RawAIOCB *)blockacb; | |
629 | ||
630 | ret = qemu_paio_cancel(acb->aiocb.aio_fildes, &acb->aiocb); | |
631 | if (ret == QEMU_PAIO_NOTCANCELED) { | |
632 | /* fail safe: if the aio could not be canceled, we wait for | |
633 | it */ | |
634 | while (qemu_paio_error(&acb->aiocb) == EINPROGRESS); | |
635 | } | |
636 | ||
637 | raw_aio_remove(acb); | |
638 | } | |
639 | ||
640 | static AIOPool raw_aio_pool = { | |
641 | .aiocb_size = sizeof(RawAIOCB), | |
642 | .cancel = raw_aio_cancel, | |
643 | }; | |
644 | ||
f141eafe AL |
645 | static RawAIOCB *raw_aio_setup(BlockDriverState *bs, int64_t sector_num, |
646 | QEMUIOVector *qiov, int nb_sectors, | |
ce1a14dc | 647 | BlockDriverCompletionFunc *cb, void *opaque) |
83f64091 | 648 | { |
ce1a14dc PB |
649 | BDRVRawState *s = bs->opaque; |
650 | RawAIOCB *acb; | |
651 | ||
19cb3738 FB |
652 | if (fd_open(bs) < 0) |
653 | return NULL; | |
654 | ||
c16b5a2c | 655 | acb = qemu_aio_get(&raw_aio_pool, bs, cb, opaque); |
ce1a14dc PB |
656 | if (!acb) |
657 | return NULL; | |
3c529d93 | 658 | acb->aiocb.aio_fildes = s->fd; |
55f11ca3 | 659 | acb->aiocb.ev_signo = SIGUSR2; |
f141eafe AL |
660 | acb->aiocb.aio_iov = qiov->iov; |
661 | acb->aiocb.aio_niov = qiov->niov; | |
662 | acb->aiocb.aio_nbytes = nb_sectors * 512; | |
ce1a14dc | 663 | acb->aiocb.aio_offset = sector_num * 512; |
f141eafe AL |
664 | acb->aiocb.aio_flags = 0; |
665 | ||
666 | /* | |
667 | * If O_DIRECT is used the buffer needs to be aligned on a sector | |
668 | * boundary. Tell the low level code to ensure that in case it's | |
669 | * not done yet. | |
670 | */ | |
671 | if (s->aligned_buf) | |
672 | acb->aiocb.aio_flags |= QEMU_AIO_SECTOR_ALIGNED; | |
673 | ||
a76bab49 AL |
674 | acb->next = posix_aio_state->first_aio; |
675 | posix_aio_state->first_aio = acb; | |
ce1a14dc | 676 | return acb; |
83f64091 FB |
677 | } |
678 | ||
f141eafe AL |
679 | static BlockDriverAIOCB *raw_aio_readv(BlockDriverState *bs, |
680 | int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, | |
ce1a14dc | 681 | BlockDriverCompletionFunc *cb, void *opaque) |
83f64091 | 682 | { |
ce1a14dc | 683 | RawAIOCB *acb; |
83f64091 | 684 | |
f141eafe | 685 | acb = raw_aio_setup(bs, sector_num, qiov, nb_sectors, cb, opaque); |
ce1a14dc PB |
686 | if (!acb) |
687 | return NULL; | |
3c529d93 | 688 | if (qemu_paio_read(&acb->aiocb) < 0) { |
22bf1458 | 689 | raw_aio_remove(acb); |
ce1a14dc | 690 | return NULL; |
5fafdf24 | 691 | } |
ce1a14dc | 692 | return &acb->common; |
83f64091 FB |
693 | } |
694 | ||
f141eafe AL |
695 | static BlockDriverAIOCB *raw_aio_writev(BlockDriverState *bs, |
696 | int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, | |
ce1a14dc | 697 | BlockDriverCompletionFunc *cb, void *opaque) |
83f64091 | 698 | { |
ce1a14dc | 699 | RawAIOCB *acb; |
83f64091 | 700 | |
f141eafe | 701 | acb = raw_aio_setup(bs, sector_num, qiov, nb_sectors, cb, opaque); |
ce1a14dc PB |
702 | if (!acb) |
703 | return NULL; | |
3c529d93 | 704 | if (qemu_paio_write(&acb->aiocb) < 0) { |
22bf1458 | 705 | raw_aio_remove(acb); |
ce1a14dc | 706 | return NULL; |
5fafdf24 | 707 | } |
ce1a14dc | 708 | return &acb->common; |
83f64091 | 709 | } |
a76bab49 AL |
710 | #else /* CONFIG_AIO */ |
711 | static int posix_aio_init(void) | |
414f0dab | 712 | { |
674a24ac | 713 | return 0; |
414f0dab | 714 | } |
414f0dab BS |
715 | #endif /* CONFIG_AIO */ |
716 | ||
53538725 | 717 | |
83f64091 FB |
718 | static void raw_close(BlockDriverState *bs) |
719 | { | |
720 | BDRVRawState *s = bs->opaque; | |
19cb3738 FB |
721 | if (s->fd >= 0) { |
722 | close(s->fd); | |
723 | s->fd = -1; | |
bed5cc52 FB |
724 | if (s->aligned_buf != NULL) |
725 | qemu_free(s->aligned_buf); | |
19cb3738 | 726 | } |
83f64091 FB |
727 | } |
728 | ||
729 | static int raw_truncate(BlockDriverState *bs, int64_t offset) | |
730 | { | |
731 | BDRVRawState *s = bs->opaque; | |
19cb3738 FB |
732 | if (s->type != FTYPE_FILE) |
733 | return -ENOTSUP; | |
83f64091 FB |
734 | if (ftruncate(s->fd, offset) < 0) |
735 | return -errno; | |
736 | return 0; | |
737 | } | |
738 | ||
128ab2ff BS |
739 | #ifdef __OpenBSD__ |
740 | static int64_t raw_getlength(BlockDriverState *bs) | |
741 | { | |
742 | BDRVRawState *s = bs->opaque; | |
743 | int fd = s->fd; | |
744 | struct stat st; | |
745 | ||
746 | if (fstat(fd, &st)) | |
747 | return -1; | |
748 | if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) { | |
749 | struct disklabel dl; | |
750 | ||
751 | if (ioctl(fd, DIOCGDINFO, &dl)) | |
752 | return -1; | |
753 | return (uint64_t)dl.d_secsize * | |
754 | dl.d_partitions[DISKPART(st.st_rdev)].p_size; | |
755 | } else | |
756 | return st.st_size; | |
757 | } | |
758 | #else /* !__OpenBSD__ */ | |
83f64091 FB |
759 | static int64_t raw_getlength(BlockDriverState *bs) |
760 | { | |
761 | BDRVRawState *s = bs->opaque; | |
762 | int fd = s->fd; | |
763 | int64_t size; | |
179a2c19 | 764 | #ifdef HOST_BSD |
83f64091 | 765 | struct stat sb; |
9f23011a BS |
766 | #ifdef __FreeBSD__ |
767 | int reopened = 0; | |
768 | #endif | |
83f64091 FB |
769 | #endif |
770 | #ifdef __sun__ | |
771 | struct dk_minfo minfo; | |
772 | int rv; | |
773 | #endif | |
19cb3738 FB |
774 | int ret; |
775 | ||
776 | ret = fd_open(bs); | |
777 | if (ret < 0) | |
778 | return ret; | |
83f64091 | 779 | |
179a2c19 | 780 | #ifdef HOST_BSD |
9f23011a BS |
781 | #ifdef __FreeBSD__ |
782 | again: | |
783 | #endif | |
83f64091 FB |
784 | if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) { |
785 | #ifdef DIOCGMEDIASIZE | |
786 | if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size)) | |
c5e97233 BS |
787 | #elif defined(DIOCGPART) |
788 | { | |
789 | struct partinfo pi; | |
790 | if (ioctl(fd, DIOCGPART, &pi) == 0) | |
791 | size = pi.media_size; | |
792 | else | |
793 | size = 0; | |
794 | } | |
795 | if (size == 0) | |
83f64091 FB |
796 | #endif |
797 | #ifdef CONFIG_COCOA | |
798 | size = LONG_LONG_MAX; | |
799 | #else | |
800 | size = lseek(fd, 0LL, SEEK_END); | |
9f23011a BS |
801 | #endif |
802 | #ifdef __FreeBSD__ | |
803 | switch(s->type) { | |
804 | case FTYPE_CD: | |
805 | /* XXX FreeBSD acd returns UINT_MAX sectors for an empty drive */ | |
806 | if (size == 2048LL * (unsigned)-1) | |
807 | size = 0; | |
808 | /* XXX no disc? maybe we need to reopen... */ | |
f3a5d3f8 | 809 | if (size <= 0 && !reopened && cdrom_reopen(bs) >= 0) { |
9f23011a BS |
810 | reopened = 1; |
811 | goto again; | |
812 | } | |
813 | } | |
83f64091 FB |
814 | #endif |
815 | } else | |
816 | #endif | |
817 | #ifdef __sun__ | |
818 | /* | |
819 | * use the DKIOCGMEDIAINFO ioctl to read the size. | |
820 | */ | |
821 | rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo ); | |
822 | if ( rv != -1 ) { | |
823 | size = minfo.dki_lbsize * minfo.dki_capacity; | |
824 | } else /* there are reports that lseek on some devices | |
825 | fails, but irc discussion said that contingency | |
826 | on contingency was overkill */ | |
827 | #endif | |
828 | { | |
829 | size = lseek(fd, 0, SEEK_END); | |
830 | } | |
83f64091 FB |
831 | return size; |
832 | } | |
128ab2ff | 833 | #endif |
83f64091 | 834 | |
0e7e1989 | 835 | static int raw_create(const char *filename, QEMUOptionParameter *options) |
83f64091 FB |
836 | { |
837 | int fd; | |
0e7e1989 | 838 | int64_t total_size = 0; |
83f64091 | 839 | |
0e7e1989 KW |
840 | /* Read out options */ |
841 | while (options && options->name) { | |
842 | if (!strcmp(options->name, BLOCK_OPT_SIZE)) { | |
843 | total_size = options->value.n / 512; | |
844 | } | |
845 | options++; | |
846 | } | |
83f64091 | 847 | |
5fafdf24 | 848 | fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
83f64091 FB |
849 | 0644); |
850 | if (fd < 0) | |
851 | return -EIO; | |
852 | ftruncate(fd, total_size * 512); | |
853 | close(fd); | |
854 | return 0; | |
855 | } | |
856 | ||
857 | static void raw_flush(BlockDriverState *bs) | |
858 | { | |
859 | BDRVRawState *s = bs->opaque; | |
860 | fsync(s->fd); | |
861 | } | |
862 | ||
0e7e1989 KW |
863 | |
864 | static QEMUOptionParameter raw_create_options[] = { | |
db08adf5 KW |
865 | { |
866 | .name = BLOCK_OPT_SIZE, | |
867 | .type = OPT_SIZE, | |
868 | .help = "Virtual disk size" | |
869 | }, | |
0e7e1989 KW |
870 | { NULL } |
871 | }; | |
872 | ||
5efa9d5a | 873 | static BlockDriver bdrv_raw = { |
856ae5c3 BS |
874 | .format_name = "raw", |
875 | .instance_size = sizeof(BDRVRawState), | |
876 | .bdrv_probe = NULL, /* no probe for protocols */ | |
877 | .bdrv_open = raw_open, | |
878 | .bdrv_read = raw_read, | |
879 | .bdrv_write = raw_write, | |
880 | .bdrv_close = raw_close, | |
881 | .bdrv_create = raw_create, | |
882 | .bdrv_flush = raw_flush, | |
3b46e624 | 883 | |
414f0dab | 884 | #ifdef CONFIG_AIO |
f141eafe AL |
885 | .bdrv_aio_readv = raw_aio_readv, |
886 | .bdrv_aio_writev = raw_aio_writev, | |
414f0dab | 887 | #endif |
3c529d93 | 888 | |
83f64091 FB |
889 | .bdrv_truncate = raw_truncate, |
890 | .bdrv_getlength = raw_getlength, | |
0e7e1989 KW |
891 | |
892 | .create_options = raw_create_options, | |
83f64091 FB |
893 | }; |
894 | ||
19cb3738 FB |
895 | /***********************************************/ |
896 | /* host device */ | |
897 | ||
898 | #ifdef CONFIG_COCOA | |
899 | static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ); | |
900 | static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ); | |
901 | ||
902 | kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ) | |
903 | { | |
5fafdf24 | 904 | kern_return_t kernResult; |
19cb3738 FB |
905 | mach_port_t masterPort; |
906 | CFMutableDictionaryRef classesToMatch; | |
907 | ||
908 | kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort ); | |
909 | if ( KERN_SUCCESS != kernResult ) { | |
910 | printf( "IOMasterPort returned %d\n", kernResult ); | |
911 | } | |
3b46e624 | 912 | |
5fafdf24 | 913 | classesToMatch = IOServiceMatching( kIOCDMediaClass ); |
19cb3738 FB |
914 | if ( classesToMatch == NULL ) { |
915 | printf( "IOServiceMatching returned a NULL dictionary.\n" ); | |
916 | } else { | |
917 | CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue ); | |
918 | } | |
919 | kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator ); | |
920 | if ( KERN_SUCCESS != kernResult ) | |
921 | { | |
922 | printf( "IOServiceGetMatchingServices returned %d\n", kernResult ); | |
923 | } | |
3b46e624 | 924 | |
19cb3738 FB |
925 | return kernResult; |
926 | } | |
927 | ||
928 | kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ) | |
929 | { | |
930 | io_object_t nextMedia; | |
931 | kern_return_t kernResult = KERN_FAILURE; | |
932 | *bsdPath = '\0'; | |
933 | nextMedia = IOIteratorNext( mediaIterator ); | |
934 | if ( nextMedia ) | |
935 | { | |
936 | CFTypeRef bsdPathAsCFString; | |
937 | bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 ); | |
938 | if ( bsdPathAsCFString ) { | |
939 | size_t devPathLength; | |
940 | strcpy( bsdPath, _PATH_DEV ); | |
941 | strcat( bsdPath, "r" ); | |
942 | devPathLength = strlen( bsdPath ); | |
943 | if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) { | |
944 | kernResult = KERN_SUCCESS; | |
945 | } | |
946 | CFRelease( bsdPathAsCFString ); | |
947 | } | |
948 | IOObjectRelease( nextMedia ); | |
949 | } | |
3b46e624 | 950 | |
19cb3738 FB |
951 | return kernResult; |
952 | } | |
953 | ||
954 | #endif | |
955 | ||
956 | static int hdev_open(BlockDriverState *bs, const char *filename, int flags) | |
957 | { | |
958 | BDRVRawState *s = bs->opaque; | |
a76bab49 | 959 | |
19cb3738 FB |
960 | #ifdef CONFIG_COCOA |
961 | if (strstart(filename, "/dev/cdrom", NULL)) { | |
962 | kern_return_t kernResult; | |
963 | io_iterator_t mediaIterator; | |
964 | char bsdPath[ MAXPATHLEN ]; | |
965 | int fd; | |
5fafdf24 | 966 | |
19cb3738 FB |
967 | kernResult = FindEjectableCDMedia( &mediaIterator ); |
968 | kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) ); | |
3b46e624 | 969 | |
19cb3738 FB |
970 | if ( bsdPath[ 0 ] != '\0' ) { |
971 | strcat(bsdPath,"s0"); | |
972 | /* some CDs don't have a partition 0 */ | |
973 | fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE); | |
974 | if (fd < 0) { | |
975 | bsdPath[strlen(bsdPath)-1] = '1'; | |
976 | } else { | |
977 | close(fd); | |
978 | } | |
979 | filename = bsdPath; | |
980 | } | |
3b46e624 | 981 | |
19cb3738 FB |
982 | if ( mediaIterator ) |
983 | IOObjectRelease( mediaIterator ); | |
984 | } | |
985 | #endif | |
19cb3738 FB |
986 | |
987 | s->type = FTYPE_FILE; | |
f3a5d3f8 CH |
988 | #if defined(__linux__) && defined(CONFIG_AIO) |
989 | if (strstart(filename, "/dev/sg", NULL)) { | |
985a03b0 | 990 | bs->sg = 1; |
19cb3738 FB |
991 | } |
992 | #endif | |
90babde0 | 993 | |
f3a5d3f8 | 994 | return raw_open_common(bs, filename, flags); |
19cb3738 FB |
995 | } |
996 | ||
03ff3ca3 | 997 | #if defined(__linux__) |
19cb3738 FB |
998 | /* Note: we do not have a reliable method to detect if the floppy is |
999 | present. The current method is to try to open the floppy at every | |
1000 | I/O and to keep it opened during a few hundreds of ms. */ | |
1001 | static int fd_open(BlockDriverState *bs) | |
1002 | { | |
1003 | BDRVRawState *s = bs->opaque; | |
1004 | int last_media_present; | |
1005 | ||
1006 | if (s->type != FTYPE_FD) | |
1007 | return 0; | |
1008 | last_media_present = (s->fd >= 0); | |
5fafdf24 | 1009 | if (s->fd >= 0 && |
19cb3738 FB |
1010 | (qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) { |
1011 | close(s->fd); | |
1012 | s->fd = -1; | |
1013 | #ifdef DEBUG_FLOPPY | |
1014 | printf("Floppy closed\n"); | |
1015 | #endif | |
1016 | } | |
1017 | if (s->fd < 0) { | |
5fafdf24 | 1018 | if (s->fd_got_error && |
19cb3738 FB |
1019 | (qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) { |
1020 | #ifdef DEBUG_FLOPPY | |
1021 | printf("No floppy (open delayed)\n"); | |
1022 | #endif | |
1023 | return -EIO; | |
1024 | } | |
0e1d8f4c | 1025 | s->fd = open(bs->filename, s->open_flags & ~O_NONBLOCK); |
19cb3738 FB |
1026 | if (s->fd < 0) { |
1027 | s->fd_error_time = qemu_get_clock(rt_clock); | |
1028 | s->fd_got_error = 1; | |
1029 | if (last_media_present) | |
1030 | s->fd_media_changed = 1; | |
1031 | #ifdef DEBUG_FLOPPY | |
1032 | printf("No floppy\n"); | |
1033 | #endif | |
1034 | return -EIO; | |
1035 | } | |
1036 | #ifdef DEBUG_FLOPPY | |
1037 | printf("Floppy opened\n"); | |
1038 | #endif | |
1039 | } | |
1040 | if (!last_media_present) | |
1041 | s->fd_media_changed = 1; | |
1042 | s->fd_open_time = qemu_get_clock(rt_clock); | |
1043 | s->fd_got_error = 0; | |
1044 | return 0; | |
1045 | } | |
19cb3738 | 1046 | |
985a03b0 TS |
1047 | static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
1048 | { | |
1049 | BDRVRawState *s = bs->opaque; | |
1050 | ||
1051 | return ioctl(s->fd, req, buf); | |
1052 | } | |
221f715d | 1053 | |
8185d2c9 | 1054 | #ifdef CONFIG_AIO |
221f715d AL |
1055 | static BlockDriverAIOCB *raw_aio_ioctl(BlockDriverState *bs, |
1056 | unsigned long int req, void *buf, | |
1057 | BlockDriverCompletionFunc *cb, void *opaque) | |
1058 | { | |
f141eafe | 1059 | BDRVRawState *s = bs->opaque; |
221f715d AL |
1060 | RawAIOCB *acb; |
1061 | ||
f141eafe AL |
1062 | if (fd_open(bs) < 0) |
1063 | return NULL; | |
1064 | ||
c16b5a2c | 1065 | acb = qemu_aio_get(&raw_aio_pool, bs, cb, opaque); |
221f715d AL |
1066 | if (!acb) |
1067 | return NULL; | |
f141eafe AL |
1068 | acb->aiocb.aio_fildes = s->fd; |
1069 | acb->aiocb.ev_signo = SIGUSR2; | |
1070 | acb->aiocb.aio_offset = 0; | |
1071 | acb->aiocb.aio_flags = 0; | |
1072 | ||
1073 | acb->next = posix_aio_state->first_aio; | |
1074 | posix_aio_state->first_aio = acb; | |
221f715d | 1075 | |
f141eafe | 1076 | acb->aiocb.aio_ioctl_buf = buf; |
221f715d AL |
1077 | acb->aiocb.aio_ioctl_cmd = req; |
1078 | if (qemu_paio_ioctl(&acb->aiocb) < 0) { | |
1079 | raw_aio_remove(acb); | |
1080 | return NULL; | |
1081 | } | |
1082 | ||
1083 | return &acb->common; | |
1084 | } | |
8185d2c9 | 1085 | #endif |
221f715d | 1086 | |
9f23011a | 1087 | #elif defined(__FreeBSD__) |
9f23011a BS |
1088 | static int fd_open(BlockDriverState *bs) |
1089 | { | |
1090 | BDRVRawState *s = bs->opaque; | |
1091 | ||
1092 | /* this is just to ensure s->fd is sane (its called by io ops) */ | |
1093 | if (s->fd >= 0) | |
1094 | return 0; | |
1095 | return -EIO; | |
1096 | } | |
1097 | ||
9f23011a BS |
1098 | static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
1099 | { | |
1100 | return -ENOTSUP; | |
1101 | } | |
1102 | #else /* !linux && !FreeBSD */ | |
19cb3738 | 1103 | |
08af02e2 AL |
1104 | static int fd_open(BlockDriverState *bs) |
1105 | { | |
1106 | return 0; | |
1107 | } | |
1108 | ||
985a03b0 TS |
1109 | static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
1110 | { | |
1111 | return -ENOTSUP; | |
1112 | } | |
04eeb8b6 | 1113 | |
221f715d AL |
1114 | static BlockDriverAIOCB *raw_aio_ioctl(BlockDriverState *bs, |
1115 | unsigned long int req, void *buf, | |
1116 | BlockDriverCompletionFunc *cb, void *opaque) | |
04eeb8b6 | 1117 | { |
bbeea539 | 1118 | return NULL; |
04eeb8b6 | 1119 | } |
221f715d | 1120 | #endif /* !linux && !FreeBSD */ |
04eeb8b6 | 1121 | |
0e7e1989 | 1122 | static int hdev_create(const char *filename, QEMUOptionParameter *options) |
93c65b47 AL |
1123 | { |
1124 | int fd; | |
1125 | int ret = 0; | |
1126 | struct stat stat_buf; | |
0e7e1989 | 1127 | int64_t total_size = 0; |
93c65b47 | 1128 | |
0e7e1989 KW |
1129 | /* Read out options */ |
1130 | while (options && options->name) { | |
1131 | if (!strcmp(options->name, "size")) { | |
1132 | total_size = options->value.n / 512; | |
1133 | } | |
1134 | options++; | |
1135 | } | |
93c65b47 AL |
1136 | |
1137 | fd = open(filename, O_WRONLY | O_BINARY); | |
1138 | if (fd < 0) | |
1139 | return -EIO; | |
1140 | ||
1141 | if (fstat(fd, &stat_buf) < 0) | |
1142 | ret = -EIO; | |
4099df58 | 1143 | else if (!S_ISBLK(stat_buf.st_mode) && !S_ISCHR(stat_buf.st_mode)) |
93c65b47 AL |
1144 | ret = -EIO; |
1145 | else if (lseek(fd, 0, SEEK_END) < total_size * 512) | |
1146 | ret = -ENOSPC; | |
1147 | ||
1148 | close(fd); | |
1149 | return ret; | |
1150 | } | |
1151 | ||
5efa9d5a | 1152 | static BlockDriver bdrv_host_device = { |
e60f469c AJ |
1153 | .format_name = "host_device", |
1154 | .instance_size = sizeof(BDRVRawState), | |
1155 | .bdrv_open = hdev_open, | |
1156 | .bdrv_close = raw_close, | |
93c65b47 | 1157 | .bdrv_create = hdev_create, |
e60f469c | 1158 | .bdrv_flush = raw_flush, |
3b46e624 | 1159 | |
414f0dab | 1160 | #ifdef CONFIG_AIO |
f141eafe AL |
1161 | .bdrv_aio_readv = raw_aio_readv, |
1162 | .bdrv_aio_writev = raw_aio_writev, | |
414f0dab | 1163 | #endif |
3c529d93 | 1164 | |
eda578e5 AL |
1165 | .bdrv_read = raw_read, |
1166 | .bdrv_write = raw_write, | |
e60f469c | 1167 | .bdrv_getlength = raw_getlength, |
19cb3738 | 1168 | |
f3a5d3f8 CH |
1169 | /* generic scsi device */ |
1170 | .bdrv_ioctl = raw_ioctl, | |
1171 | #ifdef CONFIG_AIO | |
1172 | .bdrv_aio_ioctl = raw_aio_ioctl, | |
1173 | #endif | |
1174 | }; | |
1175 | ||
1176 | #ifdef __linux__ | |
1177 | static int floppy_open(BlockDriverState *bs, const char *filename, int flags) | |
1178 | { | |
1179 | BDRVRawState *s = bs->opaque; | |
1180 | int ret; | |
1181 | ||
1182 | posix_aio_init(); | |
1183 | ||
1184 | s->type = FTYPE_FD; | |
1185 | /* open will not fail even if no floppy is inserted */ | |
1186 | s->open_flags |= O_NONBLOCK; | |
1187 | ||
1188 | ret = raw_open_common(bs, filename, flags); | |
1189 | if (ret) | |
1190 | return ret; | |
1191 | ||
1192 | /* close fd so that we can reopen it as needed */ | |
1193 | close(s->fd); | |
1194 | s->fd = -1; | |
1195 | s->fd_media_changed = 1; | |
1196 | ||
1197 | return 0; | |
1198 | } | |
1199 | ||
1200 | static int floppy_is_inserted(BlockDriverState *bs) | |
1201 | { | |
1202 | return fd_open(bs) >= 0; | |
1203 | } | |
1204 | ||
1205 | static int floppy_media_changed(BlockDriverState *bs) | |
1206 | { | |
1207 | BDRVRawState *s = bs->opaque; | |
1208 | int ret; | |
1209 | ||
1210 | /* | |
1211 | * XXX: we do not have a true media changed indication. | |
1212 | * It does not work if the floppy is changed without trying to read it. | |
1213 | */ | |
1214 | fd_open(bs); | |
1215 | ret = s->fd_media_changed; | |
1216 | s->fd_media_changed = 0; | |
1217 | #ifdef DEBUG_FLOPPY | |
1218 | printf("Floppy changed=%d\n", ret); | |
1219 | #endif | |
1220 | return ret; | |
1221 | } | |
1222 | ||
1223 | static int floppy_eject(BlockDriverState *bs, int eject_flag) | |
1224 | { | |
1225 | BDRVRawState *s = bs->opaque; | |
1226 | int fd; | |
1227 | ||
1228 | if (s->fd >= 0) { | |
1229 | close(s->fd); | |
1230 | s->fd = -1; | |
1231 | } | |
1232 | fd = open(bs->filename, s->open_flags | O_NONBLOCK); | |
1233 | if (fd >= 0) { | |
1234 | if (ioctl(fd, FDEJECT, 0) < 0) | |
1235 | perror("FDEJECT"); | |
1236 | close(fd); | |
1237 | } | |
1238 | ||
1239 | return 0; | |
1240 | } | |
1241 | ||
1242 | static BlockDriver bdrv_host_floppy = { | |
1243 | .format_name = "host_floppy", | |
1244 | .instance_size = sizeof(BDRVRawState), | |
1245 | .bdrv_open = floppy_open, | |
1246 | .bdrv_close = raw_close, | |
1247 | .bdrv_create = hdev_create, | |
1248 | .bdrv_flush = raw_flush, | |
1249 | ||
1250 | #ifdef CONFIG_AIO | |
1251 | .bdrv_aio_readv = raw_aio_readv, | |
1252 | .bdrv_aio_writev = raw_aio_writev, | |
1253 | #endif | |
1254 | ||
1255 | .bdrv_read = raw_read, | |
1256 | .bdrv_write = raw_write, | |
1257 | .bdrv_getlength = raw_getlength, | |
1258 | ||
1259 | /* removable device support */ | |
1260 | .bdrv_is_inserted = floppy_is_inserted, | |
1261 | .bdrv_media_changed = floppy_media_changed, | |
1262 | .bdrv_eject = floppy_eject, | |
1263 | ||
1264 | /* generic scsi device */ | |
1265 | .bdrv_ioctl = raw_ioctl, | |
1266 | #ifdef CONFIG_AIO | |
1267 | .bdrv_aio_ioctl = raw_aio_ioctl, | |
1268 | #endif | |
1269 | }; | |
1270 | ||
1271 | static int cdrom_open(BlockDriverState *bs, const char *filename, int flags) | |
1272 | { | |
1273 | BDRVRawState *s = bs->opaque; | |
1274 | ||
1275 | /* open will not fail even if no CD is inserted */ | |
1276 | s->open_flags |= O_NONBLOCK; | |
1277 | s->type = FTYPE_CD; | |
1278 | ||
1279 | return raw_open_common(bs, filename, flags); | |
1280 | } | |
1281 | ||
1282 | static int cdrom_is_inserted(BlockDriverState *bs) | |
1283 | { | |
1284 | BDRVRawState *s = bs->opaque; | |
1285 | int ret; | |
1286 | ||
1287 | ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); | |
1288 | if (ret == CDS_DISC_OK) | |
1289 | return 1; | |
1290 | return 0; | |
1291 | } | |
1292 | ||
1293 | static int cdrom_eject(BlockDriverState *bs, int eject_flag) | |
1294 | { | |
1295 | BDRVRawState *s = bs->opaque; | |
1296 | ||
1297 | if (eject_flag) { | |
1298 | if (ioctl(s->fd, CDROMEJECT, NULL) < 0) | |
1299 | perror("CDROMEJECT"); | |
1300 | } else { | |
1301 | if (ioctl(s->fd, CDROMCLOSETRAY, NULL) < 0) | |
1302 | perror("CDROMEJECT"); | |
1303 | } | |
1304 | ||
1305 | return 0; | |
1306 | } | |
1307 | ||
1308 | static int cdrom_set_locked(BlockDriverState *bs, int locked) | |
1309 | { | |
1310 | BDRVRawState *s = bs->opaque; | |
1311 | ||
1312 | if (ioctl(s->fd, CDROM_LOCKDOOR, locked) < 0) { | |
1313 | /* | |
1314 | * Note: an error can happen if the distribution automatically | |
1315 | * mounts the CD-ROM | |
1316 | */ | |
1317 | /* perror("CDROM_LOCKDOOR"); */ | |
1318 | } | |
1319 | ||
1320 | return 0; | |
1321 | } | |
1322 | ||
1323 | static BlockDriver bdrv_host_cdrom = { | |
1324 | .format_name = "host_cdrom", | |
1325 | .instance_size = sizeof(BDRVRawState), | |
1326 | .bdrv_open = cdrom_open, | |
1327 | .bdrv_close = raw_close, | |
1328 | .bdrv_create = hdev_create, | |
1329 | .bdrv_flush = raw_flush, | |
1330 | ||
1331 | #ifdef CONFIG_AIO | |
1332 | .bdrv_aio_readv = raw_aio_readv, | |
1333 | .bdrv_aio_writev = raw_aio_writev, | |
1334 | #endif | |
1335 | ||
1336 | .bdrv_read = raw_read, | |
1337 | .bdrv_write = raw_write, | |
1338 | .bdrv_getlength = raw_getlength, | |
1339 | ||
1340 | /* removable device support */ | |
1341 | .bdrv_is_inserted = cdrom_is_inserted, | |
1342 | .bdrv_eject = cdrom_eject, | |
1343 | .bdrv_set_locked = cdrom_set_locked, | |
1344 | ||
1345 | /* generic scsi device */ | |
1346 | .bdrv_ioctl = raw_ioctl, | |
1347 | #ifdef CONFIG_AIO | |
1348 | .bdrv_aio_ioctl = raw_aio_ioctl, | |
1349 | #endif | |
1350 | }; | |
1351 | #endif /* __linux__ */ | |
1352 | ||
1353 | #ifdef __FreeBSD__ | |
1354 | static int cdrom_open(BlockDriverState *bs, const char *filename, int flags) | |
1355 | { | |
1356 | BDRVRawState *s = bs->opaque; | |
1357 | int ret; | |
1358 | ||
1359 | s->type = FTYPE_CD; | |
1360 | ||
1361 | ret = raw_open_common(bs, filename, flags); | |
1362 | if (ret) | |
1363 | return ret; | |
1364 | ||
1365 | /* make sure the door isnt locked at this time */ | |
1366 | ioctl(s->fd, CDIOCALLOW); | |
1367 | return 0; | |
1368 | } | |
1369 | ||
1370 | static int cdrom_reopen(BlockDriverState *bs) | |
1371 | { | |
1372 | BDRVRawState *s = bs->opaque; | |
1373 | int fd; | |
1374 | ||
1375 | /* | |
1376 | * Force reread of possibly changed/newly loaded disc, | |
1377 | * FreeBSD seems to not notice sometimes... | |
1378 | */ | |
1379 | if (s->fd >= 0) | |
1380 | close(s->fd); | |
1381 | fd = open(bs->filename, s->open_flags, 0644); | |
1382 | if (fd < 0) { | |
1383 | s->fd = -1; | |
1384 | return -EIO; | |
1385 | } | |
1386 | s->fd = fd; | |
1387 | ||
1388 | /* make sure the door isnt locked at this time */ | |
1389 | ioctl(s->fd, CDIOCALLOW); | |
1390 | return 0; | |
1391 | } | |
1392 | ||
1393 | static int cdrom_is_inserted(BlockDriverState *bs) | |
1394 | { | |
1395 | return raw_getlength(bs) > 0; | |
1396 | } | |
1397 | ||
1398 | static int cdrom_eject(BlockDriverState *bs, int eject_flag) | |
1399 | { | |
1400 | BDRVRawState *s = bs->opaque; | |
1401 | ||
1402 | if (s->fd < 0) | |
1403 | return -ENOTSUP; | |
1404 | ||
1405 | (void) ioctl(s->fd, CDIOCALLOW); | |
1406 | ||
1407 | if (eject_flag) { | |
1408 | if (ioctl(s->fd, CDIOCEJECT) < 0) | |
1409 | perror("CDIOCEJECT"); | |
1410 | } else { | |
1411 | if (ioctl(s->fd, CDIOCCLOSE) < 0) | |
1412 | perror("CDIOCCLOSE"); | |
1413 | } | |
1414 | ||
1415 | if (cdrom_reopen(bs) < 0) | |
1416 | return -ENOTSUP; | |
1417 | return 0; | |
1418 | } | |
1419 | ||
1420 | static int cdrom_set_locked(BlockDriverState *bs, int locked) | |
1421 | { | |
1422 | BDRVRawState *s = bs->opaque; | |
1423 | ||
1424 | if (s->fd < 0) | |
1425 | return -ENOTSUP; | |
1426 | if (ioctl(s->fd, (locked ? CDIOCPREVENT : CDIOCALLOW)) < 0) { | |
1427 | /* | |
1428 | * Note: an error can happen if the distribution automatically | |
1429 | * mounts the CD-ROM | |
1430 | */ | |
1431 | /* perror("CDROM_LOCKDOOR"); */ | |
1432 | } | |
1433 | ||
1434 | return 0; | |
1435 | } | |
1436 | ||
1437 | static BlockDriver bdrv_host_cdrom = { | |
1438 | .format_name = "host_cdrom", | |
1439 | .instance_size = sizeof(BDRVRawState), | |
1440 | .bdrv_open = cdrom_open, | |
1441 | .bdrv_close = raw_close, | |
1442 | .bdrv_create = hdev_create, | |
1443 | .bdrv_flush = raw_flush, | |
1444 | ||
1445 | #ifdef CONFIG_AIO | |
1446 | .bdrv_aio_readv = raw_aio_readv, | |
1447 | .bdrv_aio_writev = raw_aio_writev, | |
1448 | #endif | |
1449 | ||
1450 | .bdrv_read = raw_read, | |
1451 | .bdrv_write = raw_write, | |
1452 | .bdrv_getlength = raw_getlength, | |
1453 | ||
19cb3738 | 1454 | /* removable device support */ |
f3a5d3f8 CH |
1455 | .bdrv_is_inserted = cdrom_is_inserted, |
1456 | .bdrv_eject = cdrom_eject, | |
1457 | .bdrv_set_locked = cdrom_set_locked, | |
1458 | ||
985a03b0 | 1459 | /* generic scsi device */ |
f3a5d3f8 | 1460 | .bdrv_ioctl = raw_ioctl, |
8185d2c9 | 1461 | #ifdef CONFIG_AIO |
f3a5d3f8 | 1462 | .bdrv_aio_ioctl = raw_aio_ioctl, |
8185d2c9 | 1463 | #endif |
19cb3738 | 1464 | }; |
f3a5d3f8 | 1465 | #endif /* __FreeBSD__ */ |
5efa9d5a AL |
1466 | |
1467 | static void bdrv_raw_init(void) | |
1468 | { | |
1469 | bdrv_register(&bdrv_raw); | |
1470 | bdrv_register(&bdrv_host_device); | |
f3a5d3f8 CH |
1471 | #ifdef __linux__ |
1472 | bdrv_register(&bdrv_host_floppy); | |
1473 | bdrv_register(&bdrv_host_cdrom); | |
1474 | #endif | |
1475 | #ifdef __FreeBSD__ | |
1476 | bdrv_register(&bdrv_host_cdrom); | |
1477 | #endif | |
5efa9d5a AL |
1478 | } |
1479 | ||
1480 | block_init(bdrv_raw_init); |