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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 | 45 | #define _POSIX_PTHREAD_SEMANTICS 1 |
83f64091 FB |
46 | #include <sys/dkio.h> |
47 | #endif | |
19cb3738 | 48 | #ifdef __linux__ |
343f8568 JS |
49 | #include <sys/types.h> |
50 | #include <sys/stat.h> | |
19cb3738 | 51 | #include <sys/ioctl.h> |
05acda4d | 52 | #include <sys/param.h> |
19cb3738 FB |
53 | #include <linux/cdrom.h> |
54 | #include <linux/fd.h> | |
55 | #endif | |
a167ba50 | 56 | #if defined (__FreeBSD__) || defined(__FreeBSD_kernel__) |
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 | ||
d1f6fd8d CE |
67 | #ifdef __NetBSD__ |
68 | #include <sys/ioctl.h> | |
69 | #include <sys/disklabel.h> | |
70 | #include <sys/dkio.h> | |
71 | #include <sys/disk.h> | |
72 | #endif | |
73 | ||
c5e97233 BS |
74 | #ifdef __DragonFly__ |
75 | #include <sys/ioctl.h> | |
76 | #include <sys/diskslice.h> | |
77 | #endif | |
78 | ||
dce512de CH |
79 | #ifdef CONFIG_XFS |
80 | #include <xfs/xfs.h> | |
81 | #endif | |
82 | ||
19cb3738 | 83 | //#define DEBUG_FLOPPY |
83f64091 | 84 | |
faf07963 | 85 | //#define DEBUG_BLOCK |
03ff3ca3 | 86 | #if defined(DEBUG_BLOCK) |
001faf32 BS |
87 | #define DEBUG_BLOCK_PRINT(formatCstr, ...) do { if (qemu_log_enabled()) \ |
88 | { qemu_log(formatCstr, ## __VA_ARGS__); qemu_log_flush(); } } while (0) | |
8c05dbf9 | 89 | #else |
001faf32 | 90 | #define DEBUG_BLOCK_PRINT(formatCstr, ...) |
8c05dbf9 TS |
91 | #endif |
92 | ||
f6465578 AL |
93 | /* OS X does not have O_DSYNC */ |
94 | #ifndef O_DSYNC | |
1c27a8b3 | 95 | #ifdef O_SYNC |
7ab064d2 | 96 | #define O_DSYNC O_SYNC |
1c27a8b3 | 97 | #elif defined(O_FSYNC) |
98 | #define O_DSYNC O_FSYNC | |
99 | #endif | |
f6465578 AL |
100 | #endif |
101 | ||
9f7965c7 AL |
102 | /* Approximate O_DIRECT with O_DSYNC if O_DIRECT isn't available */ |
103 | #ifndef O_DIRECT | |
104 | #define O_DIRECT O_DSYNC | |
105 | #endif | |
106 | ||
19cb3738 FB |
107 | #define FTYPE_FILE 0 |
108 | #define FTYPE_CD 1 | |
109 | #define FTYPE_FD 2 | |
83f64091 | 110 | |
c57c846a | 111 | /* if the FD is not accessed during that time (in ns), we try to |
19cb3738 | 112 | reopen it to see if the disk has been changed */ |
c57c846a | 113 | #define FD_OPEN_TIMEOUT (1000000000) |
83f64091 | 114 | |
581b9e29 CH |
115 | #define MAX_BLOCKSIZE 4096 |
116 | ||
19cb3738 FB |
117 | typedef struct BDRVRawState { |
118 | int fd; | |
119 | int type; | |
0e1d8f4c | 120 | int open_flags; |
19cb3738 FB |
121 | #if defined(__linux__) |
122 | /* linux floppy specific */ | |
19cb3738 FB |
123 | int64_t fd_open_time; |
124 | int64_t fd_error_time; | |
125 | int fd_got_error; | |
126 | int fd_media_changed; | |
83f64091 | 127 | #endif |
e44bd6fc | 128 | #ifdef CONFIG_LINUX_AIO |
5c6c3a6c | 129 | int use_aio; |
1e5b9d2f | 130 | void *aio_ctx; |
e44bd6fc | 131 | #endif |
581b9e29 CH |
132 | uint8_t *aligned_buf; |
133 | unsigned aligned_buf_size; | |
dce512de CH |
134 | #ifdef CONFIG_XFS |
135 | bool is_xfs : 1; | |
136 | #endif | |
19cb3738 FB |
137 | } BDRVRawState; |
138 | ||
139 | static int fd_open(BlockDriverState *bs); | |
22afa7b5 | 140 | static int64_t raw_getlength(BlockDriverState *bs); |
83f64091 | 141 | |
a167ba50 | 142 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
f3a5d3f8 | 143 | static int cdrom_reopen(BlockDriverState *bs); |
9f23011a BS |
144 | #endif |
145 | ||
1de1ae0a CE |
146 | #if defined(__NetBSD__) |
147 | static int raw_normalize_devicepath(const char **filename) | |
148 | { | |
149 | static char namebuf[PATH_MAX]; | |
150 | const char *dp, *fname; | |
151 | struct stat sb; | |
152 | ||
153 | fname = *filename; | |
154 | dp = strrchr(fname, '/'); | |
155 | if (lstat(fname, &sb) < 0) { | |
156 | fprintf(stderr, "%s: stat failed: %s\n", | |
157 | fname, strerror(errno)); | |
158 | return -errno; | |
159 | } | |
160 | ||
161 | if (!S_ISBLK(sb.st_mode)) { | |
162 | return 0; | |
163 | } | |
164 | ||
165 | if (dp == NULL) { | |
166 | snprintf(namebuf, PATH_MAX, "r%s", fname); | |
167 | } else { | |
168 | snprintf(namebuf, PATH_MAX, "%.*s/r%s", | |
169 | (int)(dp - fname), fname, dp + 1); | |
170 | } | |
171 | fprintf(stderr, "%s is a block device", fname); | |
172 | *filename = namebuf; | |
173 | fprintf(stderr, ", using %s\n", *filename); | |
174 | ||
175 | return 0; | |
176 | } | |
177 | #else | |
178 | static int raw_normalize_devicepath(const char **filename) | |
179 | { | |
180 | return 0; | |
181 | } | |
182 | #endif | |
183 | ||
90babde0 | 184 | static int raw_open_common(BlockDriverState *bs, const char *filename, |
19a3da7f | 185 | int bdrv_flags, int open_flags) |
83f64091 FB |
186 | { |
187 | BDRVRawState *s = bs->opaque; | |
0e1d8f4c | 188 | int fd, ret; |
83f64091 | 189 | |
1de1ae0a CE |
190 | ret = raw_normalize_devicepath(&filename); |
191 | if (ret != 0) { | |
192 | return ret; | |
193 | } | |
194 | ||
19a3da7f | 195 | s->open_flags = open_flags | O_BINARY; |
11a1feb6 | 196 | s->open_flags &= ~O_ACCMODE; |
f5edb014 | 197 | if (bdrv_flags & BDRV_O_RDWR) { |
0e1d8f4c | 198 | s->open_flags |= O_RDWR; |
83f64091 | 199 | } else { |
0e1d8f4c | 200 | s->open_flags |= O_RDONLY; |
83f64091 | 201 | } |
9f7965c7 AL |
202 | |
203 | /* Use O_DSYNC for write-through caching, no flags for write-back caching, | |
204 | * and O_DIRECT for no caching. */ | |
19a3da7f | 205 | if ((bdrv_flags & BDRV_O_NOCACHE)) |
0e1d8f4c | 206 | s->open_flags |= O_DIRECT; |
a6599793 | 207 | if (!(bdrv_flags & BDRV_O_CACHE_WB)) |
0e1d8f4c | 208 | s->open_flags |= O_DSYNC; |
83f64091 | 209 | |
90babde0 | 210 | s->fd = -1; |
40ff6d7e | 211 | fd = qemu_open(filename, s->open_flags, 0644); |
19cb3738 FB |
212 | if (fd < 0) { |
213 | ret = -errno; | |
214 | if (ret == -EROFS) | |
215 | ret = -EACCES; | |
216 | return ret; | |
217 | } | |
83f64091 | 218 | s->fd = fd; |
bed5cc52 | 219 | s->aligned_buf = NULL; |
5c6c3a6c | 220 | |
19a3da7f | 221 | if ((bdrv_flags & BDRV_O_NOCACHE)) { |
581b9e29 CH |
222 | /* |
223 | * Allocate a buffer for read/modify/write cycles. Chose the size | |
224 | * pessimistically as we don't know the block size yet. | |
225 | */ | |
226 | s->aligned_buf_size = 32 * MAX_BLOCKSIZE; | |
227 | s->aligned_buf = qemu_memalign(MAX_BLOCKSIZE, s->aligned_buf_size); | |
bed5cc52 | 228 | if (s->aligned_buf == NULL) { |
9ef91a67 | 229 | goto out_close; |
bed5cc52 FB |
230 | } |
231 | } | |
9ef91a67 | 232 | |
f6e8ffc2 FZ |
233 | /* We're falling back to POSIX AIO in some cases so init always */ |
234 | if (paio_init() < 0) { | |
235 | goto out_free_buf; | |
236 | } | |
237 | ||
5c6c3a6c | 238 | #ifdef CONFIG_LINUX_AIO |
c30e624d FZ |
239 | /* |
240 | * Currently Linux do AIO only for files opened with O_DIRECT | |
241 | * specified so check NOCACHE flag too | |
242 | */ | |
5c6c3a6c CH |
243 | if ((bdrv_flags & (BDRV_O_NOCACHE|BDRV_O_NATIVE_AIO)) == |
244 | (BDRV_O_NOCACHE|BDRV_O_NATIVE_AIO)) { | |
d2e46345 | 245 | |
5c6c3a6c CH |
246 | s->aio_ctx = laio_init(); |
247 | if (!s->aio_ctx) { | |
248 | goto out_free_buf; | |
249 | } | |
250 | s->use_aio = 1; | |
251 | } else | |
252 | #endif | |
253 | { | |
e44bd6fc | 254 | #ifdef CONFIG_LINUX_AIO |
5c6c3a6c | 255 | s->use_aio = 0; |
e44bd6fc | 256 | #endif |
9ef91a67 CH |
257 | } |
258 | ||
dce512de CH |
259 | #ifdef CONFIG_XFS |
260 | if (platform_test_xfs_fd(s->fd)) { | |
261 | s->is_xfs = 1; | |
262 | } | |
263 | #endif | |
264 | ||
83f64091 | 265 | return 0; |
9ef91a67 CH |
266 | |
267 | out_free_buf: | |
268 | qemu_vfree(s->aligned_buf); | |
269 | out_close: | |
270 | close(fd); | |
271 | return -errno; | |
83f64091 FB |
272 | } |
273 | ||
90babde0 CH |
274 | static int raw_open(BlockDriverState *bs, const char *filename, int flags) |
275 | { | |
276 | BDRVRawState *s = bs->opaque; | |
277 | ||
278 | s->type = FTYPE_FILE; | |
9a2d77ad | 279 | return raw_open_common(bs, filename, flags, 0); |
90babde0 CH |
280 | } |
281 | ||
83f64091 FB |
282 | /* XXX: use host sector size if necessary with: |
283 | #ifdef DIOCGSECTORSIZE | |
284 | { | |
285 | unsigned int sectorsize = 512; | |
286 | if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) && | |
287 | sectorsize > bufsize) | |
288 | bufsize = sectorsize; | |
289 | } | |
290 | #endif | |
291 | #ifdef CONFIG_COCOA | |
2ee9fb48 | 292 | uint32_t blockSize = 512; |
83f64091 FB |
293 | if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) { |
294 | bufsize = blockSize; | |
295 | } | |
296 | #endif | |
297 | */ | |
298 | ||
9ef91a67 CH |
299 | /* |
300 | * Check if all memory in this vector is sector aligned. | |
301 | */ | |
581b9e29 | 302 | static int qiov_is_aligned(BlockDriverState *bs, QEMUIOVector *qiov) |
a76bab49 | 303 | { |
9ef91a67 | 304 | int i; |
83f64091 | 305 | |
9ef91a67 | 306 | for (i = 0; i < qiov->niov; i++) { |
581b9e29 | 307 | if ((uintptr_t) qiov->iov[i].iov_base % bs->buffer_alignment) { |
9ef91a67 | 308 | return 0; |
c16b5a2c | 309 | } |
c16b5a2c | 310 | } |
c16b5a2c | 311 | |
9ef91a67 | 312 | return 1; |
c16b5a2c CH |
313 | } |
314 | ||
9ef91a67 CH |
315 | static BlockDriverAIOCB *raw_aio_submit(BlockDriverState *bs, |
316 | int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, | |
317 | BlockDriverCompletionFunc *cb, void *opaque, int type) | |
83f64091 | 318 | { |
ce1a14dc | 319 | BDRVRawState *s = bs->opaque; |
ce1a14dc | 320 | |
19cb3738 FB |
321 | if (fd_open(bs) < 0) |
322 | return NULL; | |
323 | ||
f141eafe AL |
324 | /* |
325 | * If O_DIRECT is used the buffer needs to be aligned on a sector | |
c1ee7d56 | 326 | * boundary. Check if this is the case or tell the low-level |
9ef91a67 | 327 | * driver that it needs to copy the buffer. |
f141eafe | 328 | */ |
5c6c3a6c | 329 | if (s->aligned_buf) { |
581b9e29 | 330 | if (!qiov_is_aligned(bs, qiov)) { |
5c6c3a6c | 331 | type |= QEMU_AIO_MISALIGNED; |
e44bd6fc | 332 | #ifdef CONFIG_LINUX_AIO |
5c6c3a6c CH |
333 | } else if (s->use_aio) { |
334 | return laio_submit(bs, s->aio_ctx, s->fd, sector_num, qiov, | |
e44bd6fc SW |
335 | nb_sectors, cb, opaque, type); |
336 | #endif | |
5c6c3a6c | 337 | } |
9ef91a67 | 338 | } |
f141eafe | 339 | |
1e5b9d2f | 340 | return paio_submit(bs, s->fd, sector_num, qiov, nb_sectors, |
9ef91a67 | 341 | cb, opaque, type); |
83f64091 FB |
342 | } |
343 | ||
f141eafe AL |
344 | static BlockDriverAIOCB *raw_aio_readv(BlockDriverState *bs, |
345 | int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, | |
ce1a14dc | 346 | BlockDriverCompletionFunc *cb, void *opaque) |
83f64091 | 347 | { |
9ef91a67 CH |
348 | return raw_aio_submit(bs, sector_num, qiov, nb_sectors, |
349 | cb, opaque, QEMU_AIO_READ); | |
83f64091 FB |
350 | } |
351 | ||
f141eafe AL |
352 | static BlockDriverAIOCB *raw_aio_writev(BlockDriverState *bs, |
353 | int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, | |
ce1a14dc | 354 | BlockDriverCompletionFunc *cb, void *opaque) |
83f64091 | 355 | { |
9ef91a67 CH |
356 | return raw_aio_submit(bs, sector_num, qiov, nb_sectors, |
357 | cb, opaque, QEMU_AIO_WRITE); | |
83f64091 | 358 | } |
53538725 | 359 | |
b2e12bc6 CH |
360 | static BlockDriverAIOCB *raw_aio_flush(BlockDriverState *bs, |
361 | BlockDriverCompletionFunc *cb, void *opaque) | |
362 | { | |
363 | BDRVRawState *s = bs->opaque; | |
364 | ||
365 | if (fd_open(bs) < 0) | |
366 | return NULL; | |
367 | ||
1e5b9d2f | 368 | return paio_submit(bs, s->fd, 0, NULL, 0, cb, opaque, QEMU_AIO_FLUSH); |
b2e12bc6 CH |
369 | } |
370 | ||
83f64091 FB |
371 | static void raw_close(BlockDriverState *bs) |
372 | { | |
373 | BDRVRawState *s = bs->opaque; | |
19cb3738 FB |
374 | if (s->fd >= 0) { |
375 | close(s->fd); | |
376 | s->fd = -1; | |
bed5cc52 | 377 | if (s->aligned_buf != NULL) |
f8a83245 | 378 | qemu_vfree(s->aligned_buf); |
19cb3738 | 379 | } |
83f64091 FB |
380 | } |
381 | ||
382 | static int raw_truncate(BlockDriverState *bs, int64_t offset) | |
383 | { | |
384 | BDRVRawState *s = bs->opaque; | |
55b949c8 CH |
385 | struct stat st; |
386 | ||
387 | if (fstat(s->fd, &st)) { | |
83f64091 | 388 | return -errno; |
55b949c8 CH |
389 | } |
390 | ||
391 | if (S_ISREG(st.st_mode)) { | |
392 | if (ftruncate(s->fd, offset) < 0) { | |
393 | return -errno; | |
394 | } | |
395 | } else if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) { | |
396 | if (offset > raw_getlength(bs)) { | |
397 | return -EINVAL; | |
398 | } | |
399 | } else { | |
400 | return -ENOTSUP; | |
401 | } | |
402 | ||
83f64091 FB |
403 | return 0; |
404 | } | |
405 | ||
128ab2ff BS |
406 | #ifdef __OpenBSD__ |
407 | static int64_t raw_getlength(BlockDriverState *bs) | |
408 | { | |
409 | BDRVRawState *s = bs->opaque; | |
410 | int fd = s->fd; | |
411 | struct stat st; | |
412 | ||
413 | if (fstat(fd, &st)) | |
414 | return -1; | |
415 | if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) { | |
416 | struct disklabel dl; | |
417 | ||
418 | if (ioctl(fd, DIOCGDINFO, &dl)) | |
419 | return -1; | |
420 | return (uint64_t)dl.d_secsize * | |
421 | dl.d_partitions[DISKPART(st.st_rdev)].p_size; | |
422 | } else | |
423 | return st.st_size; | |
424 | } | |
d1f6fd8d CE |
425 | #elif defined(__NetBSD__) |
426 | static int64_t raw_getlength(BlockDriverState *bs) | |
427 | { | |
428 | BDRVRawState *s = bs->opaque; | |
429 | int fd = s->fd; | |
430 | struct stat st; | |
431 | ||
432 | if (fstat(fd, &st)) | |
433 | return -1; | |
434 | if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) { | |
435 | struct dkwedge_info dkw; | |
436 | ||
437 | if (ioctl(fd, DIOCGWEDGEINFO, &dkw) != -1) { | |
438 | return dkw.dkw_size * 512; | |
439 | } else { | |
440 | struct disklabel dl; | |
441 | ||
442 | if (ioctl(fd, DIOCGDINFO, &dl)) | |
443 | return -1; | |
444 | return (uint64_t)dl.d_secsize * | |
445 | dl.d_partitions[DISKPART(st.st_rdev)].p_size; | |
446 | } | |
447 | } else | |
448 | return st.st_size; | |
449 | } | |
50779cc2 CH |
450 | #elif defined(__sun__) |
451 | static int64_t raw_getlength(BlockDriverState *bs) | |
452 | { | |
453 | BDRVRawState *s = bs->opaque; | |
454 | struct dk_minfo minfo; | |
455 | int ret; | |
456 | ||
457 | ret = fd_open(bs); | |
458 | if (ret < 0) { | |
459 | return ret; | |
460 | } | |
461 | ||
462 | /* | |
463 | * Use the DKIOCGMEDIAINFO ioctl to read the size. | |
464 | */ | |
465 | ret = ioctl(s->fd, DKIOCGMEDIAINFO, &minfo); | |
466 | if (ret != -1) { | |
467 | return minfo.dki_lbsize * minfo.dki_capacity; | |
468 | } | |
469 | ||
470 | /* | |
471 | * There are reports that lseek on some devices fails, but | |
472 | * irc discussion said that contingency on contingency was overkill. | |
473 | */ | |
474 | return lseek(s->fd, 0, SEEK_END); | |
475 | } | |
476 | #elif defined(CONFIG_BSD) | |
477 | static int64_t raw_getlength(BlockDriverState *bs) | |
83f64091 FB |
478 | { |
479 | BDRVRawState *s = bs->opaque; | |
480 | int fd = s->fd; | |
481 | int64_t size; | |
83f64091 | 482 | struct stat sb; |
a167ba50 | 483 | #if defined (__FreeBSD__) || defined(__FreeBSD_kernel__) |
9f23011a | 484 | int reopened = 0; |
83f64091 | 485 | #endif |
19cb3738 FB |
486 | int ret; |
487 | ||
488 | ret = fd_open(bs); | |
489 | if (ret < 0) | |
490 | return ret; | |
83f64091 | 491 | |
a167ba50 | 492 | #if defined (__FreeBSD__) || defined(__FreeBSD_kernel__) |
9f23011a BS |
493 | again: |
494 | #endif | |
83f64091 FB |
495 | if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) { |
496 | #ifdef DIOCGMEDIASIZE | |
497 | if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size)) | |
c5e97233 BS |
498 | #elif defined(DIOCGPART) |
499 | { | |
500 | struct partinfo pi; | |
501 | if (ioctl(fd, DIOCGPART, &pi) == 0) | |
502 | size = pi.media_size; | |
503 | else | |
504 | size = 0; | |
505 | } | |
506 | if (size == 0) | |
83f64091 FB |
507 | #endif |
508 | #ifdef CONFIG_COCOA | |
509 | size = LONG_LONG_MAX; | |
510 | #else | |
511 | size = lseek(fd, 0LL, SEEK_END); | |
9f23011a | 512 | #endif |
a167ba50 | 513 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
9f23011a BS |
514 | switch(s->type) { |
515 | case FTYPE_CD: | |
516 | /* XXX FreeBSD acd returns UINT_MAX sectors for an empty drive */ | |
517 | if (size == 2048LL * (unsigned)-1) | |
518 | size = 0; | |
519 | /* XXX no disc? maybe we need to reopen... */ | |
f3a5d3f8 | 520 | if (size <= 0 && !reopened && cdrom_reopen(bs) >= 0) { |
9f23011a BS |
521 | reopened = 1; |
522 | goto again; | |
523 | } | |
524 | } | |
83f64091 | 525 | #endif |
50779cc2 | 526 | } else { |
83f64091 FB |
527 | size = lseek(fd, 0, SEEK_END); |
528 | } | |
83f64091 FB |
529 | return size; |
530 | } | |
50779cc2 CH |
531 | #else |
532 | static int64_t raw_getlength(BlockDriverState *bs) | |
533 | { | |
534 | BDRVRawState *s = bs->opaque; | |
535 | int ret; | |
536 | ||
537 | ret = fd_open(bs); | |
538 | if (ret < 0) { | |
539 | return ret; | |
540 | } | |
541 | ||
542 | return lseek(s->fd, 0, SEEK_END); | |
543 | } | |
128ab2ff | 544 | #endif |
83f64091 | 545 | |
4a1d5e1f FZ |
546 | static int64_t raw_get_allocated_file_size(BlockDriverState *bs) |
547 | { | |
548 | struct stat st; | |
549 | BDRVRawState *s = bs->opaque; | |
550 | ||
551 | if (fstat(s->fd, &st) < 0) { | |
552 | return -errno; | |
553 | } | |
554 | return (int64_t)st.st_blocks * 512; | |
555 | } | |
556 | ||
0e7e1989 | 557 | static int raw_create(const char *filename, QEMUOptionParameter *options) |
83f64091 FB |
558 | { |
559 | int fd; | |
1e37d059 | 560 | int result = 0; |
0e7e1989 | 561 | int64_t total_size = 0; |
83f64091 | 562 | |
0e7e1989 KW |
563 | /* Read out options */ |
564 | while (options && options->name) { | |
565 | if (!strcmp(options->name, BLOCK_OPT_SIZE)) { | |
9040385d | 566 | total_size = options->value.n / BDRV_SECTOR_SIZE; |
0e7e1989 KW |
567 | } |
568 | options++; | |
569 | } | |
83f64091 | 570 | |
5fafdf24 | 571 | fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
83f64091 | 572 | 0644); |
1e37d059 SW |
573 | if (fd < 0) { |
574 | result = -errno; | |
575 | } else { | |
9040385d | 576 | if (ftruncate(fd, total_size * BDRV_SECTOR_SIZE) != 0) { |
1e37d059 SW |
577 | result = -errno; |
578 | } | |
579 | if (close(fd) != 0) { | |
580 | result = -errno; | |
581 | } | |
582 | } | |
583 | return result; | |
83f64091 FB |
584 | } |
585 | ||
dce512de CH |
586 | #ifdef CONFIG_XFS |
587 | static int xfs_discard(BDRVRawState *s, int64_t sector_num, int nb_sectors) | |
588 | { | |
589 | struct xfs_flock64 fl; | |
590 | ||
591 | memset(&fl, 0, sizeof(fl)); | |
592 | fl.l_whence = SEEK_SET; | |
593 | fl.l_start = sector_num << 9; | |
594 | fl.l_len = (int64_t)nb_sectors << 9; | |
595 | ||
596 | if (xfsctl(NULL, s->fd, XFS_IOC_UNRESVSP64, &fl) < 0) { | |
597 | DEBUG_BLOCK_PRINT("cannot punch hole (%s)\n", strerror(errno)); | |
598 | return -errno; | |
599 | } | |
600 | ||
601 | return 0; | |
602 | } | |
603 | #endif | |
604 | ||
6db39ae2 PB |
605 | static coroutine_fn int raw_co_discard(BlockDriverState *bs, |
606 | int64_t sector_num, int nb_sectors) | |
dce512de CH |
607 | { |
608 | #ifdef CONFIG_XFS | |
609 | BDRVRawState *s = bs->opaque; | |
610 | ||
611 | if (s->is_xfs) { | |
612 | return xfs_discard(s, sector_num, nb_sectors); | |
613 | } | |
614 | #endif | |
615 | ||
616 | return 0; | |
617 | } | |
0e7e1989 KW |
618 | |
619 | static QEMUOptionParameter raw_create_options[] = { | |
db08adf5 KW |
620 | { |
621 | .name = BLOCK_OPT_SIZE, | |
622 | .type = OPT_SIZE, | |
623 | .help = "Virtual disk size" | |
624 | }, | |
0e7e1989 KW |
625 | { NULL } |
626 | }; | |
627 | ||
84a12e66 CH |
628 | static BlockDriver bdrv_file = { |
629 | .format_name = "file", | |
630 | .protocol_name = "file", | |
856ae5c3 BS |
631 | .instance_size = sizeof(BDRVRawState), |
632 | .bdrv_probe = NULL, /* no probe for protocols */ | |
66f82cee | 633 | .bdrv_file_open = raw_open, |
856ae5c3 BS |
634 | .bdrv_close = raw_close, |
635 | .bdrv_create = raw_create, | |
6db39ae2 | 636 | .bdrv_co_discard = raw_co_discard, |
3b46e624 | 637 | |
f141eafe AL |
638 | .bdrv_aio_readv = raw_aio_readv, |
639 | .bdrv_aio_writev = raw_aio_writev, | |
b2e12bc6 | 640 | .bdrv_aio_flush = raw_aio_flush, |
3c529d93 | 641 | |
83f64091 FB |
642 | .bdrv_truncate = raw_truncate, |
643 | .bdrv_getlength = raw_getlength, | |
4a1d5e1f FZ |
644 | .bdrv_get_allocated_file_size |
645 | = raw_get_allocated_file_size, | |
0e7e1989 KW |
646 | |
647 | .create_options = raw_create_options, | |
83f64091 FB |
648 | }; |
649 | ||
19cb3738 FB |
650 | /***********************************************/ |
651 | /* host device */ | |
652 | ||
653 | #ifdef CONFIG_COCOA | |
654 | static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ); | |
655 | static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ); | |
656 | ||
657 | kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ) | |
658 | { | |
5fafdf24 | 659 | kern_return_t kernResult; |
19cb3738 FB |
660 | mach_port_t masterPort; |
661 | CFMutableDictionaryRef classesToMatch; | |
662 | ||
663 | kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort ); | |
664 | if ( KERN_SUCCESS != kernResult ) { | |
665 | printf( "IOMasterPort returned %d\n", kernResult ); | |
666 | } | |
3b46e624 | 667 | |
5fafdf24 | 668 | classesToMatch = IOServiceMatching( kIOCDMediaClass ); |
19cb3738 FB |
669 | if ( classesToMatch == NULL ) { |
670 | printf( "IOServiceMatching returned a NULL dictionary.\n" ); | |
671 | } else { | |
672 | CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue ); | |
673 | } | |
674 | kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator ); | |
675 | if ( KERN_SUCCESS != kernResult ) | |
676 | { | |
677 | printf( "IOServiceGetMatchingServices returned %d\n", kernResult ); | |
678 | } | |
3b46e624 | 679 | |
19cb3738 FB |
680 | return kernResult; |
681 | } | |
682 | ||
683 | kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ) | |
684 | { | |
685 | io_object_t nextMedia; | |
686 | kern_return_t kernResult = KERN_FAILURE; | |
687 | *bsdPath = '\0'; | |
688 | nextMedia = IOIteratorNext( mediaIterator ); | |
689 | if ( nextMedia ) | |
690 | { | |
691 | CFTypeRef bsdPathAsCFString; | |
692 | bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 ); | |
693 | if ( bsdPathAsCFString ) { | |
694 | size_t devPathLength; | |
695 | strcpy( bsdPath, _PATH_DEV ); | |
696 | strcat( bsdPath, "r" ); | |
697 | devPathLength = strlen( bsdPath ); | |
698 | if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) { | |
699 | kernResult = KERN_SUCCESS; | |
700 | } | |
701 | CFRelease( bsdPathAsCFString ); | |
702 | } | |
703 | IOObjectRelease( nextMedia ); | |
704 | } | |
3b46e624 | 705 | |
19cb3738 FB |
706 | return kernResult; |
707 | } | |
708 | ||
709 | #endif | |
710 | ||
508c7cb3 CH |
711 | static int hdev_probe_device(const char *filename) |
712 | { | |
713 | struct stat st; | |
714 | ||
715 | /* allow a dedicated CD-ROM driver to match with a higher priority */ | |
716 | if (strstart(filename, "/dev/cdrom", NULL)) | |
717 | return 50; | |
718 | ||
719 | if (stat(filename, &st) >= 0 && | |
720 | (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode))) { | |
721 | return 100; | |
722 | } | |
723 | ||
724 | return 0; | |
725 | } | |
726 | ||
19cb3738 FB |
727 | static int hdev_open(BlockDriverState *bs, const char *filename, int flags) |
728 | { | |
729 | BDRVRawState *s = bs->opaque; | |
a76bab49 | 730 | |
19cb3738 FB |
731 | #ifdef CONFIG_COCOA |
732 | if (strstart(filename, "/dev/cdrom", NULL)) { | |
733 | kern_return_t kernResult; | |
734 | io_iterator_t mediaIterator; | |
735 | char bsdPath[ MAXPATHLEN ]; | |
736 | int fd; | |
5fafdf24 | 737 | |
19cb3738 FB |
738 | kernResult = FindEjectableCDMedia( &mediaIterator ); |
739 | kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) ); | |
3b46e624 | 740 | |
19cb3738 FB |
741 | if ( bsdPath[ 0 ] != '\0' ) { |
742 | strcat(bsdPath,"s0"); | |
743 | /* some CDs don't have a partition 0 */ | |
744 | fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE); | |
745 | if (fd < 0) { | |
746 | bsdPath[strlen(bsdPath)-1] = '1'; | |
747 | } else { | |
748 | close(fd); | |
749 | } | |
750 | filename = bsdPath; | |
751 | } | |
3b46e624 | 752 | |
19cb3738 FB |
753 | if ( mediaIterator ) |
754 | IOObjectRelease( mediaIterator ); | |
755 | } | |
756 | #endif | |
19cb3738 FB |
757 | |
758 | s->type = FTYPE_FILE; | |
4dd75c70 | 759 | #if defined(__linux__) |
05acda4d BK |
760 | { |
761 | char resolved_path[ MAXPATHLEN ], *temp; | |
762 | ||
763 | temp = realpath(filename, resolved_path); | |
764 | if (temp && strstart(temp, "/dev/sg", NULL)) { | |
765 | bs->sg = 1; | |
766 | } | |
19cb3738 FB |
767 | } |
768 | #endif | |
90babde0 | 769 | |
19a3da7f | 770 | return raw_open_common(bs, filename, flags, 0); |
19cb3738 FB |
771 | } |
772 | ||
03ff3ca3 | 773 | #if defined(__linux__) |
19cb3738 FB |
774 | /* Note: we do not have a reliable method to detect if the floppy is |
775 | present. The current method is to try to open the floppy at every | |
776 | I/O and to keep it opened during a few hundreds of ms. */ | |
777 | static int fd_open(BlockDriverState *bs) | |
778 | { | |
779 | BDRVRawState *s = bs->opaque; | |
780 | int last_media_present; | |
781 | ||
782 | if (s->type != FTYPE_FD) | |
783 | return 0; | |
784 | last_media_present = (s->fd >= 0); | |
5fafdf24 | 785 | if (s->fd >= 0 && |
c57c846a | 786 | (get_clock() - s->fd_open_time) >= FD_OPEN_TIMEOUT) { |
19cb3738 FB |
787 | close(s->fd); |
788 | s->fd = -1; | |
789 | #ifdef DEBUG_FLOPPY | |
790 | printf("Floppy closed\n"); | |
791 | #endif | |
792 | } | |
793 | if (s->fd < 0) { | |
5fafdf24 | 794 | if (s->fd_got_error && |
c57c846a | 795 | (get_clock() - s->fd_error_time) < FD_OPEN_TIMEOUT) { |
19cb3738 FB |
796 | #ifdef DEBUG_FLOPPY |
797 | printf("No floppy (open delayed)\n"); | |
798 | #endif | |
799 | return -EIO; | |
800 | } | |
0e1d8f4c | 801 | s->fd = open(bs->filename, s->open_flags & ~O_NONBLOCK); |
19cb3738 | 802 | if (s->fd < 0) { |
c57c846a | 803 | s->fd_error_time = get_clock(); |
19cb3738 FB |
804 | s->fd_got_error = 1; |
805 | if (last_media_present) | |
806 | s->fd_media_changed = 1; | |
807 | #ifdef DEBUG_FLOPPY | |
808 | printf("No floppy\n"); | |
809 | #endif | |
810 | return -EIO; | |
811 | } | |
812 | #ifdef DEBUG_FLOPPY | |
813 | printf("Floppy opened\n"); | |
814 | #endif | |
815 | } | |
816 | if (!last_media_present) | |
817 | s->fd_media_changed = 1; | |
c57c846a | 818 | s->fd_open_time = get_clock(); |
19cb3738 FB |
819 | s->fd_got_error = 0; |
820 | return 0; | |
821 | } | |
19cb3738 | 822 | |
63ec93db | 823 | static int hdev_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
985a03b0 TS |
824 | { |
825 | BDRVRawState *s = bs->opaque; | |
826 | ||
827 | return ioctl(s->fd, req, buf); | |
828 | } | |
221f715d | 829 | |
63ec93db | 830 | static BlockDriverAIOCB *hdev_aio_ioctl(BlockDriverState *bs, |
221f715d AL |
831 | unsigned long int req, void *buf, |
832 | BlockDriverCompletionFunc *cb, void *opaque) | |
833 | { | |
f141eafe | 834 | BDRVRawState *s = bs->opaque; |
221f715d | 835 | |
f141eafe AL |
836 | if (fd_open(bs) < 0) |
837 | return NULL; | |
9ef91a67 | 838 | return paio_ioctl(bs, s->fd, req, buf, cb, opaque); |
221f715d AL |
839 | } |
840 | ||
a167ba50 | 841 | #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
9f23011a BS |
842 | static int fd_open(BlockDriverState *bs) |
843 | { | |
844 | BDRVRawState *s = bs->opaque; | |
845 | ||
846 | /* this is just to ensure s->fd is sane (its called by io ops) */ | |
847 | if (s->fd >= 0) | |
848 | return 0; | |
849 | return -EIO; | |
850 | } | |
9f23011a | 851 | #else /* !linux && !FreeBSD */ |
19cb3738 | 852 | |
08af02e2 AL |
853 | static int fd_open(BlockDriverState *bs) |
854 | { | |
855 | return 0; | |
856 | } | |
857 | ||
221f715d | 858 | #endif /* !linux && !FreeBSD */ |
04eeb8b6 | 859 | |
0e7e1989 | 860 | static int hdev_create(const char *filename, QEMUOptionParameter *options) |
93c65b47 AL |
861 | { |
862 | int fd; | |
863 | int ret = 0; | |
864 | struct stat stat_buf; | |
0e7e1989 | 865 | int64_t total_size = 0; |
93c65b47 | 866 | |
0e7e1989 KW |
867 | /* Read out options */ |
868 | while (options && options->name) { | |
869 | if (!strcmp(options->name, "size")) { | |
9040385d | 870 | total_size = options->value.n / BDRV_SECTOR_SIZE; |
0e7e1989 KW |
871 | } |
872 | options++; | |
873 | } | |
93c65b47 AL |
874 | |
875 | fd = open(filename, O_WRONLY | O_BINARY); | |
876 | if (fd < 0) | |
57e69b7d | 877 | return -errno; |
93c65b47 AL |
878 | |
879 | if (fstat(fd, &stat_buf) < 0) | |
57e69b7d | 880 | ret = -errno; |
4099df58 | 881 | else if (!S_ISBLK(stat_buf.st_mode) && !S_ISCHR(stat_buf.st_mode)) |
57e69b7d | 882 | ret = -ENODEV; |
9040385d | 883 | else if (lseek(fd, 0, SEEK_END) < total_size * BDRV_SECTOR_SIZE) |
93c65b47 AL |
884 | ret = -ENOSPC; |
885 | ||
886 | close(fd); | |
887 | return ret; | |
888 | } | |
889 | ||
336c1c12 KW |
890 | static int hdev_has_zero_init(BlockDriverState *bs) |
891 | { | |
892 | return 0; | |
893 | } | |
894 | ||
5efa9d5a | 895 | static BlockDriver bdrv_host_device = { |
0b4ce02e | 896 | .format_name = "host_device", |
84a12e66 | 897 | .protocol_name = "host_device", |
0b4ce02e KW |
898 | .instance_size = sizeof(BDRVRawState), |
899 | .bdrv_probe_device = hdev_probe_device, | |
66f82cee | 900 | .bdrv_file_open = hdev_open, |
0b4ce02e | 901 | .bdrv_close = raw_close, |
93c65b47 | 902 | .bdrv_create = hdev_create, |
0b4ce02e | 903 | .create_options = raw_create_options, |
336c1c12 | 904 | .bdrv_has_zero_init = hdev_has_zero_init, |
3b46e624 | 905 | |
f141eafe AL |
906 | .bdrv_aio_readv = raw_aio_readv, |
907 | .bdrv_aio_writev = raw_aio_writev, | |
b2e12bc6 | 908 | .bdrv_aio_flush = raw_aio_flush, |
3c529d93 | 909 | |
55b949c8 | 910 | .bdrv_truncate = raw_truncate, |
e60f469c | 911 | .bdrv_getlength = raw_getlength, |
4a1d5e1f FZ |
912 | .bdrv_get_allocated_file_size |
913 | = raw_get_allocated_file_size, | |
19cb3738 | 914 | |
f3a5d3f8 | 915 | /* generic scsi device */ |
63ec93db CH |
916 | #ifdef __linux__ |
917 | .bdrv_ioctl = hdev_ioctl, | |
63ec93db CH |
918 | .bdrv_aio_ioctl = hdev_aio_ioctl, |
919 | #endif | |
f3a5d3f8 CH |
920 | }; |
921 | ||
922 | #ifdef __linux__ | |
923 | static int floppy_open(BlockDriverState *bs, const char *filename, int flags) | |
924 | { | |
925 | BDRVRawState *s = bs->opaque; | |
926 | int ret; | |
927 | ||
f3a5d3f8 | 928 | s->type = FTYPE_FD; |
f3a5d3f8 | 929 | |
19a3da7f BS |
930 | /* open will not fail even if no floppy is inserted, so add O_NONBLOCK */ |
931 | ret = raw_open_common(bs, filename, flags, O_NONBLOCK); | |
f3a5d3f8 CH |
932 | if (ret) |
933 | return ret; | |
934 | ||
935 | /* close fd so that we can reopen it as needed */ | |
936 | close(s->fd); | |
937 | s->fd = -1; | |
938 | s->fd_media_changed = 1; | |
939 | ||
940 | return 0; | |
941 | } | |
942 | ||
508c7cb3 CH |
943 | static int floppy_probe_device(const char *filename) |
944 | { | |
2ebf7c4b CR |
945 | int fd, ret; |
946 | int prio = 0; | |
947 | struct floppy_struct fdparam; | |
343f8568 | 948 | struct stat st; |
2ebf7c4b | 949 | |
508c7cb3 | 950 | if (strstart(filename, "/dev/fd", NULL)) |
2ebf7c4b CR |
951 | prio = 50; |
952 | ||
953 | fd = open(filename, O_RDONLY | O_NONBLOCK); | |
954 | if (fd < 0) { | |
955 | goto out; | |
956 | } | |
343f8568 JS |
957 | ret = fstat(fd, &st); |
958 | if (ret == -1 || !S_ISBLK(st.st_mode)) { | |
959 | goto outc; | |
960 | } | |
2ebf7c4b CR |
961 | |
962 | /* Attempt to detect via a floppy specific ioctl */ | |
963 | ret = ioctl(fd, FDGETPRM, &fdparam); | |
964 | if (ret >= 0) | |
965 | prio = 100; | |
966 | ||
343f8568 | 967 | outc: |
2ebf7c4b CR |
968 | close(fd); |
969 | out: | |
970 | return prio; | |
508c7cb3 CH |
971 | } |
972 | ||
973 | ||
f3a5d3f8 CH |
974 | static int floppy_is_inserted(BlockDriverState *bs) |
975 | { | |
976 | return fd_open(bs) >= 0; | |
977 | } | |
978 | ||
979 | static int floppy_media_changed(BlockDriverState *bs) | |
980 | { | |
981 | BDRVRawState *s = bs->opaque; | |
982 | int ret; | |
983 | ||
984 | /* | |
985 | * XXX: we do not have a true media changed indication. | |
986 | * It does not work if the floppy is changed without trying to read it. | |
987 | */ | |
988 | fd_open(bs); | |
989 | ret = s->fd_media_changed; | |
990 | s->fd_media_changed = 0; | |
991 | #ifdef DEBUG_FLOPPY | |
992 | printf("Floppy changed=%d\n", ret); | |
993 | #endif | |
994 | return ret; | |
995 | } | |
996 | ||
f36f3949 | 997 | static void floppy_eject(BlockDriverState *bs, bool eject_flag) |
f3a5d3f8 CH |
998 | { |
999 | BDRVRawState *s = bs->opaque; | |
1000 | int fd; | |
1001 | ||
1002 | if (s->fd >= 0) { | |
1003 | close(s->fd); | |
1004 | s->fd = -1; | |
1005 | } | |
1006 | fd = open(bs->filename, s->open_flags | O_NONBLOCK); | |
1007 | if (fd >= 0) { | |
1008 | if (ioctl(fd, FDEJECT, 0) < 0) | |
1009 | perror("FDEJECT"); | |
1010 | close(fd); | |
1011 | } | |
f3a5d3f8 CH |
1012 | } |
1013 | ||
1014 | static BlockDriver bdrv_host_floppy = { | |
1015 | .format_name = "host_floppy", | |
84a12e66 | 1016 | .protocol_name = "host_floppy", |
f3a5d3f8 | 1017 | .instance_size = sizeof(BDRVRawState), |
508c7cb3 | 1018 | .bdrv_probe_device = floppy_probe_device, |
66f82cee | 1019 | .bdrv_file_open = floppy_open, |
f3a5d3f8 CH |
1020 | .bdrv_close = raw_close, |
1021 | .bdrv_create = hdev_create, | |
0b4ce02e | 1022 | .create_options = raw_create_options, |
336c1c12 | 1023 | .bdrv_has_zero_init = hdev_has_zero_init, |
f3a5d3f8 | 1024 | |
f3a5d3f8 CH |
1025 | .bdrv_aio_readv = raw_aio_readv, |
1026 | .bdrv_aio_writev = raw_aio_writev, | |
b2e12bc6 | 1027 | .bdrv_aio_flush = raw_aio_flush, |
f3a5d3f8 | 1028 | |
55b949c8 | 1029 | .bdrv_truncate = raw_truncate, |
f3a5d3f8 | 1030 | .bdrv_getlength = raw_getlength, |
4a1d5e1f FZ |
1031 | .bdrv_get_allocated_file_size |
1032 | = raw_get_allocated_file_size, | |
f3a5d3f8 CH |
1033 | |
1034 | /* removable device support */ | |
1035 | .bdrv_is_inserted = floppy_is_inserted, | |
1036 | .bdrv_media_changed = floppy_media_changed, | |
1037 | .bdrv_eject = floppy_eject, | |
f3a5d3f8 CH |
1038 | }; |
1039 | ||
1040 | static int cdrom_open(BlockDriverState *bs, const char *filename, int flags) | |
1041 | { | |
1042 | BDRVRawState *s = bs->opaque; | |
1043 | ||
f3a5d3f8 CH |
1044 | s->type = FTYPE_CD; |
1045 | ||
19a3da7f BS |
1046 | /* open will not fail even if no CD is inserted, so add O_NONBLOCK */ |
1047 | return raw_open_common(bs, filename, flags, O_NONBLOCK); | |
f3a5d3f8 CH |
1048 | } |
1049 | ||
508c7cb3 CH |
1050 | static int cdrom_probe_device(const char *filename) |
1051 | { | |
3baf720e CR |
1052 | int fd, ret; |
1053 | int prio = 0; | |
343f8568 | 1054 | struct stat st; |
3baf720e | 1055 | |
3baf720e CR |
1056 | fd = open(filename, O_RDONLY | O_NONBLOCK); |
1057 | if (fd < 0) { | |
1058 | goto out; | |
1059 | } | |
343f8568 JS |
1060 | ret = fstat(fd, &st); |
1061 | if (ret == -1 || !S_ISBLK(st.st_mode)) { | |
1062 | goto outc; | |
1063 | } | |
3baf720e CR |
1064 | |
1065 | /* Attempt to detect via a CDROM specific ioctl */ | |
1066 | ret = ioctl(fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); | |
1067 | if (ret >= 0) | |
1068 | prio = 100; | |
1069 | ||
343f8568 | 1070 | outc: |
3baf720e CR |
1071 | close(fd); |
1072 | out: | |
1073 | return prio; | |
508c7cb3 CH |
1074 | } |
1075 | ||
f3a5d3f8 CH |
1076 | static int cdrom_is_inserted(BlockDriverState *bs) |
1077 | { | |
1078 | BDRVRawState *s = bs->opaque; | |
1079 | int ret; | |
1080 | ||
1081 | ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); | |
1082 | if (ret == CDS_DISC_OK) | |
1083 | return 1; | |
1084 | return 0; | |
1085 | } | |
1086 | ||
f36f3949 | 1087 | static void cdrom_eject(BlockDriverState *bs, bool eject_flag) |
f3a5d3f8 CH |
1088 | { |
1089 | BDRVRawState *s = bs->opaque; | |
1090 | ||
1091 | if (eject_flag) { | |
1092 | if (ioctl(s->fd, CDROMEJECT, NULL) < 0) | |
1093 | perror("CDROMEJECT"); | |
1094 | } else { | |
1095 | if (ioctl(s->fd, CDROMCLOSETRAY, NULL) < 0) | |
1096 | perror("CDROMEJECT"); | |
1097 | } | |
f3a5d3f8 CH |
1098 | } |
1099 | ||
025e849a | 1100 | static void cdrom_lock_medium(BlockDriverState *bs, bool locked) |
f3a5d3f8 CH |
1101 | { |
1102 | BDRVRawState *s = bs->opaque; | |
1103 | ||
1104 | if (ioctl(s->fd, CDROM_LOCKDOOR, locked) < 0) { | |
1105 | /* | |
1106 | * Note: an error can happen if the distribution automatically | |
1107 | * mounts the CD-ROM | |
1108 | */ | |
1109 | /* perror("CDROM_LOCKDOOR"); */ | |
1110 | } | |
f3a5d3f8 CH |
1111 | } |
1112 | ||
1113 | static BlockDriver bdrv_host_cdrom = { | |
1114 | .format_name = "host_cdrom", | |
84a12e66 | 1115 | .protocol_name = "host_cdrom", |
f3a5d3f8 | 1116 | .instance_size = sizeof(BDRVRawState), |
508c7cb3 | 1117 | .bdrv_probe_device = cdrom_probe_device, |
66f82cee | 1118 | .bdrv_file_open = cdrom_open, |
f3a5d3f8 CH |
1119 | .bdrv_close = raw_close, |
1120 | .bdrv_create = hdev_create, | |
0b4ce02e | 1121 | .create_options = raw_create_options, |
336c1c12 | 1122 | .bdrv_has_zero_init = hdev_has_zero_init, |
f3a5d3f8 | 1123 | |
f3a5d3f8 CH |
1124 | .bdrv_aio_readv = raw_aio_readv, |
1125 | .bdrv_aio_writev = raw_aio_writev, | |
b2e12bc6 | 1126 | .bdrv_aio_flush = raw_aio_flush, |
f3a5d3f8 | 1127 | |
55b949c8 | 1128 | .bdrv_truncate = raw_truncate, |
f3a5d3f8 | 1129 | .bdrv_getlength = raw_getlength, |
4a1d5e1f FZ |
1130 | .bdrv_get_allocated_file_size |
1131 | = raw_get_allocated_file_size, | |
f3a5d3f8 CH |
1132 | |
1133 | /* removable device support */ | |
1134 | .bdrv_is_inserted = cdrom_is_inserted, | |
1135 | .bdrv_eject = cdrom_eject, | |
025e849a | 1136 | .bdrv_lock_medium = cdrom_lock_medium, |
f3a5d3f8 CH |
1137 | |
1138 | /* generic scsi device */ | |
63ec93db | 1139 | .bdrv_ioctl = hdev_ioctl, |
63ec93db | 1140 | .bdrv_aio_ioctl = hdev_aio_ioctl, |
f3a5d3f8 CH |
1141 | }; |
1142 | #endif /* __linux__ */ | |
1143 | ||
a167ba50 | 1144 | #if defined (__FreeBSD__) || defined(__FreeBSD_kernel__) |
f3a5d3f8 CH |
1145 | static int cdrom_open(BlockDriverState *bs, const char *filename, int flags) |
1146 | { | |
1147 | BDRVRawState *s = bs->opaque; | |
1148 | int ret; | |
1149 | ||
1150 | s->type = FTYPE_CD; | |
1151 | ||
19a3da7f | 1152 | ret = raw_open_common(bs, filename, flags, 0); |
f3a5d3f8 CH |
1153 | if (ret) |
1154 | return ret; | |
1155 | ||
9b2260cb | 1156 | /* make sure the door isn't locked at this time */ |
f3a5d3f8 CH |
1157 | ioctl(s->fd, CDIOCALLOW); |
1158 | return 0; | |
1159 | } | |
1160 | ||
508c7cb3 CH |
1161 | static int cdrom_probe_device(const char *filename) |
1162 | { | |
1163 | if (strstart(filename, "/dev/cd", NULL) || | |
1164 | strstart(filename, "/dev/acd", NULL)) | |
1165 | return 100; | |
1166 | return 0; | |
1167 | } | |
1168 | ||
f3a5d3f8 CH |
1169 | static int cdrom_reopen(BlockDriverState *bs) |
1170 | { | |
1171 | BDRVRawState *s = bs->opaque; | |
1172 | int fd; | |
1173 | ||
1174 | /* | |
1175 | * Force reread of possibly changed/newly loaded disc, | |
1176 | * FreeBSD seems to not notice sometimes... | |
1177 | */ | |
1178 | if (s->fd >= 0) | |
1179 | close(s->fd); | |
1180 | fd = open(bs->filename, s->open_flags, 0644); | |
1181 | if (fd < 0) { | |
1182 | s->fd = -1; | |
1183 | return -EIO; | |
1184 | } | |
1185 | s->fd = fd; | |
1186 | ||
9b2260cb | 1187 | /* make sure the door isn't locked at this time */ |
f3a5d3f8 CH |
1188 | ioctl(s->fd, CDIOCALLOW); |
1189 | return 0; | |
1190 | } | |
1191 | ||
1192 | static int cdrom_is_inserted(BlockDriverState *bs) | |
1193 | { | |
1194 | return raw_getlength(bs) > 0; | |
1195 | } | |
1196 | ||
f36f3949 | 1197 | static void cdrom_eject(BlockDriverState *bs, bool eject_flag) |
f3a5d3f8 CH |
1198 | { |
1199 | BDRVRawState *s = bs->opaque; | |
1200 | ||
1201 | if (s->fd < 0) | |
822e1cd1 | 1202 | return; |
f3a5d3f8 CH |
1203 | |
1204 | (void) ioctl(s->fd, CDIOCALLOW); | |
1205 | ||
1206 | if (eject_flag) { | |
1207 | if (ioctl(s->fd, CDIOCEJECT) < 0) | |
1208 | perror("CDIOCEJECT"); | |
1209 | } else { | |
1210 | if (ioctl(s->fd, CDIOCCLOSE) < 0) | |
1211 | perror("CDIOCCLOSE"); | |
1212 | } | |
1213 | ||
822e1cd1 | 1214 | cdrom_reopen(bs); |
f3a5d3f8 CH |
1215 | } |
1216 | ||
025e849a | 1217 | static void cdrom_lock_medium(BlockDriverState *bs, bool locked) |
f3a5d3f8 CH |
1218 | { |
1219 | BDRVRawState *s = bs->opaque; | |
1220 | ||
1221 | if (s->fd < 0) | |
7bf37fed | 1222 | return; |
f3a5d3f8 CH |
1223 | if (ioctl(s->fd, (locked ? CDIOCPREVENT : CDIOCALLOW)) < 0) { |
1224 | /* | |
1225 | * Note: an error can happen if the distribution automatically | |
1226 | * mounts the CD-ROM | |
1227 | */ | |
1228 | /* perror("CDROM_LOCKDOOR"); */ | |
1229 | } | |
f3a5d3f8 CH |
1230 | } |
1231 | ||
1232 | static BlockDriver bdrv_host_cdrom = { | |
1233 | .format_name = "host_cdrom", | |
84a12e66 | 1234 | .protocol_name = "host_cdrom", |
f3a5d3f8 | 1235 | .instance_size = sizeof(BDRVRawState), |
508c7cb3 | 1236 | .bdrv_probe_device = cdrom_probe_device, |
66f82cee | 1237 | .bdrv_file_open = cdrom_open, |
f3a5d3f8 CH |
1238 | .bdrv_close = raw_close, |
1239 | .bdrv_create = hdev_create, | |
0b4ce02e | 1240 | .create_options = raw_create_options, |
336c1c12 | 1241 | .bdrv_has_zero_init = hdev_has_zero_init, |
f3a5d3f8 | 1242 | |
f3a5d3f8 CH |
1243 | .bdrv_aio_readv = raw_aio_readv, |
1244 | .bdrv_aio_writev = raw_aio_writev, | |
b2e12bc6 | 1245 | .bdrv_aio_flush = raw_aio_flush, |
f3a5d3f8 | 1246 | |
55b949c8 | 1247 | .bdrv_truncate = raw_truncate, |
f3a5d3f8 | 1248 | .bdrv_getlength = raw_getlength, |
4a1d5e1f FZ |
1249 | .bdrv_get_allocated_file_size |
1250 | = raw_get_allocated_file_size, | |
f3a5d3f8 | 1251 | |
19cb3738 | 1252 | /* removable device support */ |
f3a5d3f8 CH |
1253 | .bdrv_is_inserted = cdrom_is_inserted, |
1254 | .bdrv_eject = cdrom_eject, | |
025e849a | 1255 | .bdrv_lock_medium = cdrom_lock_medium, |
19cb3738 | 1256 | }; |
f3a5d3f8 | 1257 | #endif /* __FreeBSD__ */ |
5efa9d5a | 1258 | |
84a12e66 | 1259 | static void bdrv_file_init(void) |
5efa9d5a | 1260 | { |
508c7cb3 CH |
1261 | /* |
1262 | * Register all the drivers. Note that order is important, the driver | |
1263 | * registered last will get probed first. | |
1264 | */ | |
84a12e66 | 1265 | bdrv_register(&bdrv_file); |
5efa9d5a | 1266 | bdrv_register(&bdrv_host_device); |
f3a5d3f8 CH |
1267 | #ifdef __linux__ |
1268 | bdrv_register(&bdrv_host_floppy); | |
1269 | bdrv_register(&bdrv_host_cdrom); | |
1270 | #endif | |
a167ba50 | 1271 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
f3a5d3f8 CH |
1272 | bdrv_register(&bdrv_host_cdrom); |
1273 | #endif | |
5efa9d5a AL |
1274 | } |
1275 | ||
84a12e66 | 1276 | block_init(bdrv_file_init); |