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/*
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* Block driver for RAW files (posix)
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*
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* Copyright (c) 2006 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
|
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu-common.h" |
25 |
#if !defined(QEMU_IMG) && !defined(QEMU_NBD)
|
26 |
#include "qemu-timer.h" |
27 |
#include "exec-all.h" |
28 |
#endif
|
29 |
#include "block_int.h" |
30 |
#include <assert.h> |
31 |
#ifdef CONFIG_AIO
|
32 |
#include <aio.h> |
33 |
#endif
|
34 |
|
35 |
#ifdef CONFIG_COCOA
|
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#include <paths.h> |
37 |
#include <sys/param.h> |
38 |
#include <IOKit/IOKitLib.h> |
39 |
#include <IOKit/IOBSD.h> |
40 |
#include <IOKit/storage/IOMediaBSDClient.h> |
41 |
#include <IOKit/storage/IOMedia.h> |
42 |
#include <IOKit/storage/IOCDMedia.h> |
43 |
//#include <IOKit/storage/IOCDTypes.h>
|
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#include <CoreFoundation/CoreFoundation.h> |
45 |
#endif
|
46 |
|
47 |
#ifdef __sun__
|
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#define _POSIX_PTHREAD_SEMANTICS 1 |
49 |
#include <signal.h> |
50 |
#include <sys/dkio.h> |
51 |
#endif
|
52 |
#ifdef __linux__
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#include <sys/ioctl.h> |
54 |
#include <linux/cdrom.h> |
55 |
#include <linux/fd.h> |
56 |
#endif
|
57 |
#ifdef __FreeBSD__
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#include <signal.h> |
59 |
#include <sys/disk.h> |
60 |
#endif
|
61 |
|
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#ifdef __OpenBSD__
|
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#include <sys/ioctl.h> |
64 |
#include <sys/disklabel.h> |
65 |
#include <sys/dkio.h> |
66 |
#endif
|
67 |
|
68 |
//#define DEBUG_FLOPPY
|
69 |
|
70 |
//#define DEBUG_BLOCK
|
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#if defined(DEBUG_BLOCK) && !defined(QEMU_IMG) && !defined(QEMU_NBD)
|
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#define DEBUG_BLOCK_PRINT(formatCstr, args...) do { if (loglevel != 0) \ |
73 |
{ fprintf(logfile, formatCstr, ##args); fflush(logfile); } } while (0) |
74 |
#else
|
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#define DEBUG_BLOCK_PRINT(formatCstr, args...)
|
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#endif
|
77 |
|
78 |
#define FTYPE_FILE 0 |
79 |
#define FTYPE_CD 1 |
80 |
#define FTYPE_FD 2 |
81 |
|
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#define ALIGNED_BUFFER_SIZE (32 * 512) |
83 |
|
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/* if the FD is not accessed during that time (in ms), we try to
|
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reopen it to see if the disk has been changed */
|
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#define FD_OPEN_TIMEOUT 1000 |
87 |
|
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typedef struct BDRVRawState { |
89 |
int fd;
|
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int type;
|
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unsigned int lseek_err_cnt; |
92 |
#if defined(__linux__)
|
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/* linux floppy specific */
|
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int fd_open_flags;
|
95 |
int64_t fd_open_time; |
96 |
int64_t fd_error_time; |
97 |
int fd_got_error;
|
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int fd_media_changed;
|
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#endif
|
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#if defined(O_DIRECT) && !defined(QEMU_IMG)
|
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uint8_t* aligned_buf; |
102 |
#endif
|
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} BDRVRawState; |
104 |
|
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static int fd_open(BlockDriverState *bs); |
106 |
|
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static int raw_open(BlockDriverState *bs, const char *filename, int flags) |
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{ |
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BDRVRawState *s = bs->opaque; |
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int fd, open_flags, ret;
|
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|
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s->lseek_err_cnt = 0;
|
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|
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open_flags = O_BINARY; |
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if ((flags & BDRV_O_ACCESS) == O_RDWR) {
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open_flags |= O_RDWR; |
117 |
} else {
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open_flags |= O_RDONLY; |
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bs->read_only = 1;
|
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} |
121 |
if (flags & BDRV_O_CREAT)
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open_flags |= O_CREAT | O_TRUNC; |
123 |
#ifdef O_DIRECT
|
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if (flags & BDRV_O_DIRECT)
|
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open_flags |= O_DIRECT; |
126 |
#endif
|
127 |
|
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s->type = FTYPE_FILE; |
129 |
|
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fd = open(filename, open_flags, 0644);
|
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if (fd < 0) { |
132 |
ret = -errno; |
133 |
if (ret == -EROFS)
|
134 |
ret = -EACCES; |
135 |
return ret;
|
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} |
137 |
s->fd = fd; |
138 |
#if defined(O_DIRECT) && !defined(QEMU_IMG)
|
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s->aligned_buf = NULL;
|
140 |
if (flags & BDRV_O_DIRECT) {
|
141 |
s->aligned_buf = qemu_memalign(512, ALIGNED_BUFFER_SIZE);
|
142 |
if (s->aligned_buf == NULL) { |
143 |
ret = -errno; |
144 |
close(fd); |
145 |
return ret;
|
146 |
} |
147 |
} |
148 |
#endif
|
149 |
return 0; |
150 |
} |
151 |
|
152 |
/* XXX: use host sector size if necessary with:
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153 |
#ifdef DIOCGSECTORSIZE
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{
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unsigned int sectorsize = 512;
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if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) &&
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157 |
sectorsize > bufsize)
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bufsize = sectorsize;
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}
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#endif
|
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#ifdef CONFIG_COCOA
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u_int32_t blockSize = 512;
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if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) {
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bufsize = blockSize;
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}
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#endif
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*/
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168 |
|
169 |
/*
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* offset and count are in bytes, but must be multiples of 512 for files
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171 |
* opened with O_DIRECT. buf must be aligned to 512 bytes then.
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172 |
*
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173 |
* This function may be called without alignment if the caller ensures
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174 |
* that O_DIRECT is not in effect.
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175 |
*/
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static int raw_pread_aligned(BlockDriverState *bs, int64_t offset, |
177 |
uint8_t *buf, int count)
|
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{ |
179 |
BDRVRawState *s = bs->opaque; |
180 |
int ret;
|
181 |
|
182 |
ret = fd_open(bs); |
183 |
if (ret < 0) |
184 |
return ret;
|
185 |
|
186 |
if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
187 |
++(s->lseek_err_cnt); |
188 |
if(s->lseek_err_cnt <= 10) { |
189 |
DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
190 |
"] lseek failed : %d = %s\n",
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s->fd, bs->filename, offset, buf, count, |
192 |
bs->total_sectors, errno, strerror(errno)); |
193 |
} |
194 |
return -1; |
195 |
} |
196 |
s->lseek_err_cnt=0;
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197 |
|
198 |
ret = read(s->fd, buf, count); |
199 |
if (ret == count)
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200 |
goto label__raw_read__success;
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201 |
|
202 |
DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
203 |
"] read failed %d : %d = %s\n",
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s->fd, bs->filename, offset, buf, count, |
205 |
bs->total_sectors, ret, errno, strerror(errno)); |
206 |
|
207 |
/* Try harder for CDrom. */
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if (bs->type == BDRV_TYPE_CDROM) {
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lseek(s->fd, offset, SEEK_SET); |
210 |
ret = read(s->fd, buf, count); |
211 |
if (ret == count)
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212 |
goto label__raw_read__success;
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213 |
lseek(s->fd, offset, SEEK_SET); |
214 |
ret = read(s->fd, buf, count); |
215 |
if (ret == count)
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goto label__raw_read__success;
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217 |
|
218 |
DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
219 |
"] retry read failed %d : %d = %s\n",
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s->fd, bs->filename, offset, buf, count, |
221 |
bs->total_sectors, ret, errno, strerror(errno)); |
222 |
} |
223 |
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label__raw_read__success:
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225 |
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return ret;
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227 |
} |
228 |
|
229 |
/*
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* offset and count are in bytes, but must be multiples of 512 for files
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231 |
* opened with O_DIRECT. buf must be aligned to 512 bytes then.
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232 |
*
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233 |
* This function may be called without alignment if the caller ensures
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234 |
* that O_DIRECT is not in effect.
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235 |
*/
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236 |
static int raw_pwrite_aligned(BlockDriverState *bs, int64_t offset, |
237 |
const uint8_t *buf, int count) |
238 |
{ |
239 |
BDRVRawState *s = bs->opaque; |
240 |
int ret;
|
241 |
|
242 |
ret = fd_open(bs); |
243 |
if (ret < 0) |
244 |
return ret;
|
245 |
|
246 |
if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
247 |
++(s->lseek_err_cnt); |
248 |
if(s->lseek_err_cnt) {
|
249 |
DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" |
250 |
PRId64 "] lseek failed : %d = %s\n",
|
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s->fd, bs->filename, offset, buf, count, |
252 |
bs->total_sectors, errno, strerror(errno)); |
253 |
} |
254 |
return -1; |
255 |
} |
256 |
s->lseek_err_cnt = 0;
|
257 |
|
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ret = write(s->fd, buf, count); |
259 |
if (ret == count)
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goto label__raw_write__success;
|
261 |
|
262 |
DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
263 |
"] write failed %d : %d = %s\n",
|
264 |
s->fd, bs->filename, offset, buf, count, |
265 |
bs->total_sectors, ret, errno, strerror(errno)); |
266 |
|
267 |
label__raw_write__success:
|
268 |
|
269 |
return ret;
|
270 |
} |
271 |
|
272 |
|
273 |
#if defined(O_DIRECT) && !defined(QEMU_IMG)
|
274 |
/*
|
275 |
* offset and count are in bytes and possibly not aligned. For files opened
|
276 |
* with O_DIRECT, necessary alignments are ensured before calling
|
277 |
* raw_pread_aligned to do the actual read.
|
278 |
*/
|
279 |
static int raw_pread(BlockDriverState *bs, int64_t offset, |
280 |
uint8_t *buf, int count)
|
281 |
{ |
282 |
BDRVRawState *s = bs->opaque; |
283 |
int size, ret, shift, sum;
|
284 |
|
285 |
sum = 0;
|
286 |
|
287 |
if (s->aligned_buf != NULL) { |
288 |
|
289 |
if (offset & 0x1ff) { |
290 |
/* align offset on a 512 bytes boundary */
|
291 |
|
292 |
shift = offset & 0x1ff;
|
293 |
size = (shift + count + 0x1ff) & ~0x1ff; |
294 |
if (size > ALIGNED_BUFFER_SIZE)
|
295 |
size = ALIGNED_BUFFER_SIZE; |
296 |
ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, size); |
297 |
if (ret < 0) |
298 |
return ret;
|
299 |
|
300 |
size = 512 - shift;
|
301 |
if (size > count)
|
302 |
size = count; |
303 |
memcpy(buf, s->aligned_buf + shift, size); |
304 |
|
305 |
buf += size; |
306 |
offset += size; |
307 |
count -= size; |
308 |
sum += size; |
309 |
|
310 |
if (count == 0) |
311 |
return sum;
|
312 |
} |
313 |
if (count & 0x1ff || (uintptr_t) buf & 0x1ff) { |
314 |
|
315 |
/* read on aligned buffer */
|
316 |
|
317 |
while (count) {
|
318 |
|
319 |
size = (count + 0x1ff) & ~0x1ff; |
320 |
if (size > ALIGNED_BUFFER_SIZE)
|
321 |
size = ALIGNED_BUFFER_SIZE; |
322 |
|
323 |
ret = raw_pread_aligned(bs, offset, s->aligned_buf, size); |
324 |
if (ret < 0) |
325 |
return ret;
|
326 |
|
327 |
size = ret; |
328 |
if (size > count)
|
329 |
size = count; |
330 |
|
331 |
memcpy(buf, s->aligned_buf, size); |
332 |
|
333 |
buf += size; |
334 |
offset += size; |
335 |
count -= size; |
336 |
sum += size; |
337 |
} |
338 |
|
339 |
return sum;
|
340 |
} |
341 |
} |
342 |
|
343 |
return raw_pread_aligned(bs, offset, buf, count) + sum;
|
344 |
} |
345 |
|
346 |
/*
|
347 |
* offset and count are in bytes and possibly not aligned. For files opened
|
348 |
* with O_DIRECT, necessary alignments are ensured before calling
|
349 |
* raw_pwrite_aligned to do the actual write.
|
350 |
*/
|
351 |
static int raw_pwrite(BlockDriverState *bs, int64_t offset, |
352 |
const uint8_t *buf, int count) |
353 |
{ |
354 |
BDRVRawState *s = bs->opaque; |
355 |
int size, ret, shift, sum;
|
356 |
|
357 |
sum = 0;
|
358 |
|
359 |
if (s->aligned_buf != NULL) { |
360 |
|
361 |
if (offset & 0x1ff) { |
362 |
/* align offset on a 512 bytes boundary */
|
363 |
shift = offset & 0x1ff;
|
364 |
ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, 512);
|
365 |
if (ret < 0) |
366 |
return ret;
|
367 |
|
368 |
size = 512 - shift;
|
369 |
if (size > count)
|
370 |
size = count; |
371 |
memcpy(s->aligned_buf + shift, buf, size); |
372 |
|
373 |
ret = raw_pwrite_aligned(bs, offset - shift, s->aligned_buf, 512);
|
374 |
if (ret < 0) |
375 |
return ret;
|
376 |
|
377 |
buf += size; |
378 |
offset += size; |
379 |
count -= size; |
380 |
sum += size; |
381 |
|
382 |
if (count == 0) |
383 |
return sum;
|
384 |
} |
385 |
if (count & 0x1ff || (uintptr_t) buf & 0x1ff) { |
386 |
|
387 |
while ((size = (count & ~0x1ff)) != 0) { |
388 |
|
389 |
if (size > ALIGNED_BUFFER_SIZE)
|
390 |
size = ALIGNED_BUFFER_SIZE; |
391 |
|
392 |
memcpy(s->aligned_buf, buf, size); |
393 |
|
394 |
ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, size); |
395 |
if (ret < 0) |
396 |
return ret;
|
397 |
|
398 |
buf += ret; |
399 |
offset += ret; |
400 |
count -= ret; |
401 |
sum += ret; |
402 |
} |
403 |
/* here, count < 512 because (count & ~0x1ff) == 0 */
|
404 |
if (count) {
|
405 |
ret = raw_pread_aligned(bs, offset, s->aligned_buf, 512);
|
406 |
if (ret < 0) |
407 |
return ret;
|
408 |
memcpy(s->aligned_buf, buf, count); |
409 |
|
410 |
ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, 512);
|
411 |
if (ret < 0) |
412 |
return ret;
|
413 |
if (count < ret)
|
414 |
ret = count; |
415 |
|
416 |
sum += ret; |
417 |
} |
418 |
return sum;
|
419 |
} |
420 |
} |
421 |
return raw_pwrite_aligned(bs, offset, buf, count) + sum;
|
422 |
} |
423 |
|
424 |
#else
|
425 |
#define raw_pread raw_pread_aligned
|
426 |
#define raw_pwrite raw_pwrite_aligned
|
427 |
#endif
|
428 |
|
429 |
|
430 |
#ifdef CONFIG_AIO
|
431 |
/***********************************************************/
|
432 |
/* Unix AIO using POSIX AIO */
|
433 |
|
434 |
typedef struct RawAIOCB { |
435 |
BlockDriverAIOCB common; |
436 |
struct aiocb aiocb;
|
437 |
struct RawAIOCB *next;
|
438 |
int ret;
|
439 |
} RawAIOCB; |
440 |
|
441 |
static int aio_sig_num = SIGUSR2; |
442 |
static RawAIOCB *first_aio; /* AIO issued */ |
443 |
static int aio_initialized = 0; |
444 |
|
445 |
static void aio_signal_handler(int signum) |
446 |
{ |
447 |
#if !defined(QEMU_IMG) && !defined(QEMU_NBD)
|
448 |
CPUState *env = cpu_single_env; |
449 |
if (env) {
|
450 |
/* stop the currently executing cpu because a timer occured */
|
451 |
cpu_interrupt(env, CPU_INTERRUPT_EXIT); |
452 |
#ifdef USE_KQEMU
|
453 |
if (env->kqemu_enabled) {
|
454 |
kqemu_cpu_interrupt(env); |
455 |
} |
456 |
#endif
|
457 |
} |
458 |
#endif
|
459 |
} |
460 |
|
461 |
void qemu_aio_init(void) |
462 |
{ |
463 |
struct sigaction act;
|
464 |
|
465 |
aio_initialized = 1;
|
466 |
|
467 |
sigfillset(&act.sa_mask); |
468 |
act.sa_flags = 0; /* do not restart syscalls to interrupt select() */ |
469 |
act.sa_handler = aio_signal_handler; |
470 |
sigaction(aio_sig_num, &act, NULL);
|
471 |
|
472 |
#if defined(__GLIBC__) && defined(__linux__)
|
473 |
{ |
474 |
/* XXX: aio thread exit seems to hang on RedHat 9 and this init
|
475 |
seems to fix the problem. */
|
476 |
struct aioinit ai;
|
477 |
memset(&ai, 0, sizeof(ai)); |
478 |
ai.aio_threads = 1;
|
479 |
ai.aio_num = 1;
|
480 |
ai.aio_idle_time = 365 * 100000; |
481 |
aio_init(&ai); |
482 |
} |
483 |
#endif
|
484 |
} |
485 |
|
486 |
void qemu_aio_poll(void) |
487 |
{ |
488 |
RawAIOCB *acb, **pacb; |
489 |
int ret;
|
490 |
|
491 |
for(;;) {
|
492 |
pacb = &first_aio; |
493 |
for(;;) {
|
494 |
acb = *pacb; |
495 |
if (!acb)
|
496 |
goto the_end;
|
497 |
ret = aio_error(&acb->aiocb); |
498 |
if (ret == ECANCELED) {
|
499 |
/* remove the request */
|
500 |
*pacb = acb->next; |
501 |
qemu_aio_release(acb); |
502 |
} else if (ret != EINPROGRESS) { |
503 |
/* end of aio */
|
504 |
if (ret == 0) { |
505 |
ret = aio_return(&acb->aiocb); |
506 |
if (ret == acb->aiocb.aio_nbytes)
|
507 |
ret = 0;
|
508 |
else
|
509 |
ret = -EINVAL; |
510 |
} else {
|
511 |
ret = -ret; |
512 |
} |
513 |
/* remove the request */
|
514 |
*pacb = acb->next; |
515 |
/* call the callback */
|
516 |
acb->common.cb(acb->common.opaque, ret); |
517 |
qemu_aio_release(acb); |
518 |
break;
|
519 |
} else {
|
520 |
pacb = &acb->next; |
521 |
} |
522 |
} |
523 |
} |
524 |
the_end: ;
|
525 |
} |
526 |
|
527 |
/* Wait for all IO requests to complete. */
|
528 |
void qemu_aio_flush(void) |
529 |
{ |
530 |
qemu_aio_wait_start(); |
531 |
qemu_aio_poll(); |
532 |
while (first_aio) {
|
533 |
qemu_aio_wait(); |
534 |
} |
535 |
qemu_aio_wait_end(); |
536 |
} |
537 |
|
538 |
/* wait until at least one AIO was handled */
|
539 |
static sigset_t wait_oset;
|
540 |
|
541 |
void qemu_aio_wait_start(void) |
542 |
{ |
543 |
sigset_t set; |
544 |
|
545 |
if (!aio_initialized)
|
546 |
qemu_aio_init(); |
547 |
sigemptyset(&set); |
548 |
sigaddset(&set, aio_sig_num); |
549 |
sigprocmask(SIG_BLOCK, &set, &wait_oset); |
550 |
} |
551 |
|
552 |
void qemu_aio_wait(void) |
553 |
{ |
554 |
sigset_t set; |
555 |
int nb_sigs;
|
556 |
|
557 |
#if !defined(QEMU_IMG) && !defined(QEMU_NBD)
|
558 |
if (qemu_bh_poll())
|
559 |
return;
|
560 |
#endif
|
561 |
sigemptyset(&set); |
562 |
sigaddset(&set, aio_sig_num); |
563 |
sigwait(&set, &nb_sigs); |
564 |
qemu_aio_poll(); |
565 |
} |
566 |
|
567 |
void qemu_aio_wait_end(void) |
568 |
{ |
569 |
sigprocmask(SIG_SETMASK, &wait_oset, NULL);
|
570 |
} |
571 |
|
572 |
static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
|
573 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
574 |
BlockDriverCompletionFunc *cb, void *opaque)
|
575 |
{ |
576 |
BDRVRawState *s = bs->opaque; |
577 |
RawAIOCB *acb; |
578 |
|
579 |
if (fd_open(bs) < 0) |
580 |
return NULL; |
581 |
|
582 |
acb = qemu_aio_get(bs, cb, opaque); |
583 |
if (!acb)
|
584 |
return NULL; |
585 |
acb->aiocb.aio_fildes = s->fd; |
586 |
acb->aiocb.aio_sigevent.sigev_signo = aio_sig_num; |
587 |
acb->aiocb.aio_sigevent.sigev_notify = SIGEV_SIGNAL; |
588 |
acb->aiocb.aio_buf = buf; |
589 |
if (nb_sectors < 0) |
590 |
acb->aiocb.aio_nbytes = -nb_sectors; |
591 |
else
|
592 |
acb->aiocb.aio_nbytes = nb_sectors * 512;
|
593 |
acb->aiocb.aio_offset = sector_num * 512;
|
594 |
acb->next = first_aio; |
595 |
first_aio = acb; |
596 |
return acb;
|
597 |
} |
598 |
|
599 |
#if !defined(QEMU_IMG) && !defined(QEMU_NBD)
|
600 |
static void raw_aio_em_cb(void* opaque) |
601 |
{ |
602 |
RawAIOCB *acb = opaque; |
603 |
acb->common.cb(acb->common.opaque, acb->ret); |
604 |
qemu_aio_release(acb); |
605 |
} |
606 |
#endif
|
607 |
|
608 |
static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
|
609 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
610 |
BlockDriverCompletionFunc *cb, void *opaque)
|
611 |
{ |
612 |
RawAIOCB *acb; |
613 |
|
614 |
/*
|
615 |
* If O_DIRECT is used and the buffer is not aligned fall back
|
616 |
* to synchronous IO.
|
617 |
*/
|
618 |
#if defined(O_DIRECT) && !defined(QEMU_IMG) && !defined(QEMU_NBD)
|
619 |
BDRVRawState *s = bs->opaque; |
620 |
|
621 |
if (unlikely(s->aligned_buf != NULL && ((uintptr_t) buf % 512))) { |
622 |
QEMUBH *bh; |
623 |
acb = qemu_aio_get(bs, cb, opaque); |
624 |
acb->ret = raw_pread(bs, 512 * sector_num, buf, 512 * nb_sectors); |
625 |
bh = qemu_bh_new(raw_aio_em_cb, acb); |
626 |
qemu_bh_schedule(bh); |
627 |
return &acb->common;
|
628 |
} |
629 |
#endif
|
630 |
|
631 |
acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
632 |
if (!acb)
|
633 |
return NULL; |
634 |
if (aio_read(&acb->aiocb) < 0) { |
635 |
qemu_aio_release(acb); |
636 |
return NULL; |
637 |
} |
638 |
return &acb->common;
|
639 |
} |
640 |
|
641 |
static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
|
642 |
int64_t sector_num, const uint8_t *buf, int nb_sectors, |
643 |
BlockDriverCompletionFunc *cb, void *opaque)
|
644 |
{ |
645 |
RawAIOCB *acb; |
646 |
|
647 |
/*
|
648 |
* If O_DIRECT is used and the buffer is not aligned fall back
|
649 |
* to synchronous IO.
|
650 |
*/
|
651 |
#if defined(O_DIRECT) && !defined(QEMU_IMG) && !defined(QEMU_NBD)
|
652 |
BDRVRawState *s = bs->opaque; |
653 |
|
654 |
if (unlikely(s->aligned_buf != NULL && ((uintptr_t) buf % 512))) { |
655 |
QEMUBH *bh; |
656 |
acb = qemu_aio_get(bs, cb, opaque); |
657 |
acb->ret = raw_pwrite(bs, 512 * sector_num, buf, 512 * nb_sectors); |
658 |
bh = qemu_bh_new(raw_aio_em_cb, acb); |
659 |
qemu_bh_schedule(bh); |
660 |
return &acb->common;
|
661 |
} |
662 |
#endif
|
663 |
|
664 |
acb = raw_aio_setup(bs, sector_num, (uint8_t*)buf, nb_sectors, cb, opaque); |
665 |
if (!acb)
|
666 |
return NULL; |
667 |
if (aio_write(&acb->aiocb) < 0) { |
668 |
qemu_aio_release(acb); |
669 |
return NULL; |
670 |
} |
671 |
return &acb->common;
|
672 |
} |
673 |
|
674 |
static void raw_aio_cancel(BlockDriverAIOCB *blockacb) |
675 |
{ |
676 |
int ret;
|
677 |
RawAIOCB *acb = (RawAIOCB *)blockacb; |
678 |
RawAIOCB **pacb; |
679 |
|
680 |
ret = aio_cancel(acb->aiocb.aio_fildes, &acb->aiocb); |
681 |
if (ret == AIO_NOTCANCELED) {
|
682 |
/* fail safe: if the aio could not be canceled, we wait for
|
683 |
it */
|
684 |
while (aio_error(&acb->aiocb) == EINPROGRESS);
|
685 |
} |
686 |
|
687 |
/* remove the callback from the queue */
|
688 |
pacb = &first_aio; |
689 |
for(;;) {
|
690 |
if (*pacb == NULL) { |
691 |
break;
|
692 |
} else if (*pacb == acb) { |
693 |
*pacb = acb->next; |
694 |
qemu_aio_release(acb); |
695 |
break;
|
696 |
} |
697 |
pacb = &acb->next; |
698 |
} |
699 |
} |
700 |
|
701 |
# else /* CONFIG_AIO */ |
702 |
|
703 |
void qemu_aio_init(void) |
704 |
{ |
705 |
} |
706 |
|
707 |
void qemu_aio_poll(void) |
708 |
{ |
709 |
} |
710 |
|
711 |
void qemu_aio_flush(void) |
712 |
{ |
713 |
} |
714 |
|
715 |
void qemu_aio_wait_start(void) |
716 |
{ |
717 |
} |
718 |
|
719 |
void qemu_aio_wait(void) |
720 |
{ |
721 |
#if !defined(QEMU_IMG) && !defined(QEMU_NBD)
|
722 |
qemu_bh_poll(); |
723 |
#endif
|
724 |
} |
725 |
|
726 |
void qemu_aio_wait_end(void) |
727 |
{ |
728 |
} |
729 |
|
730 |
#endif /* CONFIG_AIO */ |
731 |
|
732 |
static void raw_close(BlockDriverState *bs) |
733 |
{ |
734 |
BDRVRawState *s = bs->opaque; |
735 |
if (s->fd >= 0) { |
736 |
close(s->fd); |
737 |
s->fd = -1;
|
738 |
#if defined(O_DIRECT) && !defined(QEMU_IMG)
|
739 |
if (s->aligned_buf != NULL) |
740 |
qemu_free(s->aligned_buf); |
741 |
#endif
|
742 |
} |
743 |
} |
744 |
|
745 |
static int raw_truncate(BlockDriverState *bs, int64_t offset) |
746 |
{ |
747 |
BDRVRawState *s = bs->opaque; |
748 |
if (s->type != FTYPE_FILE)
|
749 |
return -ENOTSUP;
|
750 |
if (ftruncate(s->fd, offset) < 0) |
751 |
return -errno;
|
752 |
return 0; |
753 |
} |
754 |
|
755 |
#ifdef __OpenBSD__
|
756 |
static int64_t raw_getlength(BlockDriverState *bs)
|
757 |
{ |
758 |
BDRVRawState *s = bs->opaque; |
759 |
int fd = s->fd;
|
760 |
struct stat st;
|
761 |
|
762 |
if (fstat(fd, &st))
|
763 |
return -1; |
764 |
if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) {
|
765 |
struct disklabel dl;
|
766 |
|
767 |
if (ioctl(fd, DIOCGDINFO, &dl))
|
768 |
return -1; |
769 |
return (uint64_t)dl.d_secsize *
|
770 |
dl.d_partitions[DISKPART(st.st_rdev)].p_size; |
771 |
} else
|
772 |
return st.st_size;
|
773 |
} |
774 |
#else /* !__OpenBSD__ */ |
775 |
static int64_t raw_getlength(BlockDriverState *bs)
|
776 |
{ |
777 |
BDRVRawState *s = bs->opaque; |
778 |
int fd = s->fd;
|
779 |
int64_t size; |
780 |
#ifdef _BSD
|
781 |
struct stat sb;
|
782 |
#endif
|
783 |
#ifdef __sun__
|
784 |
struct dk_minfo minfo;
|
785 |
int rv;
|
786 |
#endif
|
787 |
int ret;
|
788 |
|
789 |
ret = fd_open(bs); |
790 |
if (ret < 0) |
791 |
return ret;
|
792 |
|
793 |
#ifdef _BSD
|
794 |
if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
|
795 |
#ifdef DIOCGMEDIASIZE
|
796 |
if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
|
797 |
#endif
|
798 |
#ifdef CONFIG_COCOA
|
799 |
size = LONG_LONG_MAX; |
800 |
#else
|
801 |
size = lseek(fd, 0LL, SEEK_END);
|
802 |
#endif
|
803 |
} else
|
804 |
#endif
|
805 |
#ifdef __sun__
|
806 |
/*
|
807 |
* use the DKIOCGMEDIAINFO ioctl to read the size.
|
808 |
*/
|
809 |
rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo ); |
810 |
if ( rv != -1 ) { |
811 |
size = minfo.dki_lbsize * minfo.dki_capacity; |
812 |
} else /* there are reports that lseek on some devices |
813 |
fails, but irc discussion said that contingency
|
814 |
on contingency was overkill */
|
815 |
#endif
|
816 |
{ |
817 |
size = lseek(fd, 0, SEEK_END);
|
818 |
} |
819 |
return size;
|
820 |
} |
821 |
#endif
|
822 |
|
823 |
static int raw_create(const char *filename, int64_t total_size, |
824 |
const char *backing_file, int flags) |
825 |
{ |
826 |
int fd;
|
827 |
|
828 |
if (flags || backing_file)
|
829 |
return -ENOTSUP;
|
830 |
|
831 |
fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
832 |
0644);
|
833 |
if (fd < 0) |
834 |
return -EIO;
|
835 |
ftruncate(fd, total_size * 512);
|
836 |
close(fd); |
837 |
return 0; |
838 |
} |
839 |
|
840 |
static void raw_flush(BlockDriverState *bs) |
841 |
{ |
842 |
BDRVRawState *s = bs->opaque; |
843 |
fsync(s->fd); |
844 |
} |
845 |
|
846 |
BlockDriver bdrv_raw = { |
847 |
"raw",
|
848 |
sizeof(BDRVRawState),
|
849 |
NULL, /* no probe for protocols */ |
850 |
raw_open, |
851 |
NULL,
|
852 |
NULL,
|
853 |
raw_close, |
854 |
raw_create, |
855 |
raw_flush, |
856 |
|
857 |
#ifdef CONFIG_AIO
|
858 |
.bdrv_aio_read = raw_aio_read, |
859 |
.bdrv_aio_write = raw_aio_write, |
860 |
.bdrv_aio_cancel = raw_aio_cancel, |
861 |
.aiocb_size = sizeof(RawAIOCB),
|
862 |
#endif
|
863 |
.protocol_name = "file",
|
864 |
.bdrv_pread = raw_pread, |
865 |
.bdrv_pwrite = raw_pwrite, |
866 |
.bdrv_truncate = raw_truncate, |
867 |
.bdrv_getlength = raw_getlength, |
868 |
}; |
869 |
|
870 |
/***********************************************/
|
871 |
/* host device */
|
872 |
|
873 |
#ifdef CONFIG_COCOA
|
874 |
static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator );
|
875 |
static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ); |
876 |
|
877 |
kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ) |
878 |
{ |
879 |
kern_return_t kernResult; |
880 |
mach_port_t masterPort; |
881 |
CFMutableDictionaryRef classesToMatch; |
882 |
|
883 |
kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort ); |
884 |
if ( KERN_SUCCESS != kernResult ) {
|
885 |
printf( "IOMasterPort returned %d\n", kernResult );
|
886 |
} |
887 |
|
888 |
classesToMatch = IOServiceMatching( kIOCDMediaClass ); |
889 |
if ( classesToMatch == NULL ) { |
890 |
printf( "IOServiceMatching returned a NULL dictionary.\n" );
|
891 |
} else {
|
892 |
CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue ); |
893 |
} |
894 |
kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator ); |
895 |
if ( KERN_SUCCESS != kernResult )
|
896 |
{ |
897 |
printf( "IOServiceGetMatchingServices returned %d\n", kernResult );
|
898 |
} |
899 |
|
900 |
return kernResult;
|
901 |
} |
902 |
|
903 |
kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize )
|
904 |
{ |
905 |
io_object_t nextMedia; |
906 |
kern_return_t kernResult = KERN_FAILURE; |
907 |
*bsdPath = '\0';
|
908 |
nextMedia = IOIteratorNext( mediaIterator ); |
909 |
if ( nextMedia )
|
910 |
{ |
911 |
CFTypeRef bsdPathAsCFString; |
912 |
bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 );
|
913 |
if ( bsdPathAsCFString ) {
|
914 |
size_t devPathLength; |
915 |
strcpy( bsdPath, _PATH_DEV ); |
916 |
strcat( bsdPath, "r" );
|
917 |
devPathLength = strlen( bsdPath ); |
918 |
if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) {
|
919 |
kernResult = KERN_SUCCESS; |
920 |
} |
921 |
CFRelease( bsdPathAsCFString ); |
922 |
} |
923 |
IOObjectRelease( nextMedia ); |
924 |
} |
925 |
|
926 |
return kernResult;
|
927 |
} |
928 |
|
929 |
#endif
|
930 |
|
931 |
static int hdev_open(BlockDriverState *bs, const char *filename, int flags) |
932 |
{ |
933 |
BDRVRawState *s = bs->opaque; |
934 |
int fd, open_flags, ret;
|
935 |
|
936 |
#ifdef CONFIG_COCOA
|
937 |
if (strstart(filename, "/dev/cdrom", NULL)) { |
938 |
kern_return_t kernResult; |
939 |
io_iterator_t mediaIterator; |
940 |
char bsdPath[ MAXPATHLEN ];
|
941 |
int fd;
|
942 |
|
943 |
kernResult = FindEjectableCDMedia( &mediaIterator ); |
944 |
kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) );
|
945 |
|
946 |
if ( bsdPath[ 0 ] != '\0' ) { |
947 |
strcat(bsdPath,"s0");
|
948 |
/* some CDs don't have a partition 0 */
|
949 |
fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE); |
950 |
if (fd < 0) { |
951 |
bsdPath[strlen(bsdPath)-1] = '1'; |
952 |
} else {
|
953 |
close(fd); |
954 |
} |
955 |
filename = bsdPath; |
956 |
} |
957 |
|
958 |
if ( mediaIterator )
|
959 |
IOObjectRelease( mediaIterator ); |
960 |
} |
961 |
#endif
|
962 |
open_flags = O_BINARY; |
963 |
if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
964 |
open_flags |= O_RDWR; |
965 |
} else {
|
966 |
open_flags |= O_RDONLY; |
967 |
bs->read_only = 1;
|
968 |
} |
969 |
#ifdef O_DIRECT
|
970 |
if (flags & BDRV_O_DIRECT)
|
971 |
open_flags |= O_DIRECT; |
972 |
#endif
|
973 |
|
974 |
s->type = FTYPE_FILE; |
975 |
#if defined(__linux__)
|
976 |
if (strstart(filename, "/dev/cd", NULL)) { |
977 |
/* open will not fail even if no CD is inserted */
|
978 |
open_flags |= O_NONBLOCK; |
979 |
s->type = FTYPE_CD; |
980 |
} else if (strstart(filename, "/dev/fd", NULL)) { |
981 |
s->type = FTYPE_FD; |
982 |
s->fd_open_flags = open_flags; |
983 |
/* open will not fail even if no floppy is inserted */
|
984 |
open_flags |= O_NONBLOCK; |
985 |
} else if (strstart(filename, "/dev/sg", NULL)) { |
986 |
bs->sg = 1;
|
987 |
} |
988 |
#endif
|
989 |
fd = open(filename, open_flags, 0644);
|
990 |
if (fd < 0) { |
991 |
ret = -errno; |
992 |
if (ret == -EROFS)
|
993 |
ret = -EACCES; |
994 |
return ret;
|
995 |
} |
996 |
s->fd = fd; |
997 |
#if defined(__linux__)
|
998 |
/* close fd so that we can reopen it as needed */
|
999 |
if (s->type == FTYPE_FD) {
|
1000 |
close(s->fd); |
1001 |
s->fd = -1;
|
1002 |
s->fd_media_changed = 1;
|
1003 |
} |
1004 |
#endif
|
1005 |
return 0; |
1006 |
} |
1007 |
|
1008 |
#if defined(__linux__) && !defined(QEMU_IMG) && !defined(QEMU_NBD)
|
1009 |
|
1010 |
/* Note: we do not have a reliable method to detect if the floppy is
|
1011 |
present. The current method is to try to open the floppy at every
|
1012 |
I/O and to keep it opened during a few hundreds of ms. */
|
1013 |
static int fd_open(BlockDriverState *bs) |
1014 |
{ |
1015 |
BDRVRawState *s = bs->opaque; |
1016 |
int last_media_present;
|
1017 |
|
1018 |
if (s->type != FTYPE_FD)
|
1019 |
return 0; |
1020 |
last_media_present = (s->fd >= 0);
|
1021 |
if (s->fd >= 0 && |
1022 |
(qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) { |
1023 |
close(s->fd); |
1024 |
s->fd = -1;
|
1025 |
#ifdef DEBUG_FLOPPY
|
1026 |
printf("Floppy closed\n");
|
1027 |
#endif
|
1028 |
} |
1029 |
if (s->fd < 0) { |
1030 |
if (s->fd_got_error &&
|
1031 |
(qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) { |
1032 |
#ifdef DEBUG_FLOPPY
|
1033 |
printf("No floppy (open delayed)\n");
|
1034 |
#endif
|
1035 |
return -EIO;
|
1036 |
} |
1037 |
s->fd = open(bs->filename, s->fd_open_flags); |
1038 |
if (s->fd < 0) { |
1039 |
s->fd_error_time = qemu_get_clock(rt_clock); |
1040 |
s->fd_got_error = 1;
|
1041 |
if (last_media_present)
|
1042 |
s->fd_media_changed = 1;
|
1043 |
#ifdef DEBUG_FLOPPY
|
1044 |
printf("No floppy\n");
|
1045 |
#endif
|
1046 |
return -EIO;
|
1047 |
} |
1048 |
#ifdef DEBUG_FLOPPY
|
1049 |
printf("Floppy opened\n");
|
1050 |
#endif
|
1051 |
} |
1052 |
if (!last_media_present)
|
1053 |
s->fd_media_changed = 1;
|
1054 |
s->fd_open_time = qemu_get_clock(rt_clock); |
1055 |
s->fd_got_error = 0;
|
1056 |
return 0; |
1057 |
} |
1058 |
#else
|
1059 |
static int fd_open(BlockDriverState *bs) |
1060 |
{ |
1061 |
return 0; |
1062 |
} |
1063 |
#endif
|
1064 |
|
1065 |
#if defined(__linux__)
|
1066 |
|
1067 |
static int raw_is_inserted(BlockDriverState *bs) |
1068 |
{ |
1069 |
BDRVRawState *s = bs->opaque; |
1070 |
int ret;
|
1071 |
|
1072 |
switch(s->type) {
|
1073 |
case FTYPE_CD:
|
1074 |
ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); |
1075 |
if (ret == CDS_DISC_OK)
|
1076 |
return 1; |
1077 |
else
|
1078 |
return 0; |
1079 |
break;
|
1080 |
case FTYPE_FD:
|
1081 |
ret = fd_open(bs); |
1082 |
return (ret >= 0); |
1083 |
default:
|
1084 |
return 1; |
1085 |
} |
1086 |
} |
1087 |
|
1088 |
/* currently only used by fdc.c, but a CD version would be good too */
|
1089 |
static int raw_media_changed(BlockDriverState *bs) |
1090 |
{ |
1091 |
BDRVRawState *s = bs->opaque; |
1092 |
|
1093 |
switch(s->type) {
|
1094 |
case FTYPE_FD:
|
1095 |
{ |
1096 |
int ret;
|
1097 |
/* XXX: we do not have a true media changed indication. It
|
1098 |
does not work if the floppy is changed without trying
|
1099 |
to read it */
|
1100 |
fd_open(bs); |
1101 |
ret = s->fd_media_changed; |
1102 |
s->fd_media_changed = 0;
|
1103 |
#ifdef DEBUG_FLOPPY
|
1104 |
printf("Floppy changed=%d\n", ret);
|
1105 |
#endif
|
1106 |
return ret;
|
1107 |
} |
1108 |
default:
|
1109 |
return -ENOTSUP;
|
1110 |
} |
1111 |
} |
1112 |
|
1113 |
static int raw_eject(BlockDriverState *bs, int eject_flag) |
1114 |
{ |
1115 |
BDRVRawState *s = bs->opaque; |
1116 |
|
1117 |
switch(s->type) {
|
1118 |
case FTYPE_CD:
|
1119 |
if (eject_flag) {
|
1120 |
if (ioctl (s->fd, CDROMEJECT, NULL) < 0) |
1121 |
perror("CDROMEJECT");
|
1122 |
} else {
|
1123 |
if (ioctl (s->fd, CDROMCLOSETRAY, NULL) < 0) |
1124 |
perror("CDROMEJECT");
|
1125 |
} |
1126 |
break;
|
1127 |
case FTYPE_FD:
|
1128 |
{ |
1129 |
int fd;
|
1130 |
if (s->fd >= 0) { |
1131 |
close(s->fd); |
1132 |
s->fd = -1;
|
1133 |
} |
1134 |
fd = open(bs->filename, s->fd_open_flags | O_NONBLOCK); |
1135 |
if (fd >= 0) { |
1136 |
if (ioctl(fd, FDEJECT, 0) < 0) |
1137 |
perror("FDEJECT");
|
1138 |
close(fd); |
1139 |
} |
1140 |
} |
1141 |
break;
|
1142 |
default:
|
1143 |
return -ENOTSUP;
|
1144 |
} |
1145 |
return 0; |
1146 |
} |
1147 |
|
1148 |
static int raw_set_locked(BlockDriverState *bs, int locked) |
1149 |
{ |
1150 |
BDRVRawState *s = bs->opaque; |
1151 |
|
1152 |
switch(s->type) {
|
1153 |
case FTYPE_CD:
|
1154 |
if (ioctl (s->fd, CDROM_LOCKDOOR, locked) < 0) { |
1155 |
/* Note: an error can happen if the distribution automatically
|
1156 |
mounts the CD-ROM */
|
1157 |
// perror("CDROM_LOCKDOOR");
|
1158 |
} |
1159 |
break;
|
1160 |
default:
|
1161 |
return -ENOTSUP;
|
1162 |
} |
1163 |
return 0; |
1164 |
} |
1165 |
|
1166 |
static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
1167 |
{ |
1168 |
BDRVRawState *s = bs->opaque; |
1169 |
|
1170 |
return ioctl(s->fd, req, buf);
|
1171 |
} |
1172 |
#else
|
1173 |
|
1174 |
static int raw_is_inserted(BlockDriverState *bs) |
1175 |
{ |
1176 |
return 1; |
1177 |
} |
1178 |
|
1179 |
static int raw_media_changed(BlockDriverState *bs) |
1180 |
{ |
1181 |
return -ENOTSUP;
|
1182 |
} |
1183 |
|
1184 |
static int raw_eject(BlockDriverState *bs, int eject_flag) |
1185 |
{ |
1186 |
return -ENOTSUP;
|
1187 |
} |
1188 |
|
1189 |
static int raw_set_locked(BlockDriverState *bs, int locked) |
1190 |
{ |
1191 |
return -ENOTSUP;
|
1192 |
} |
1193 |
|
1194 |
static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
1195 |
{ |
1196 |
return -ENOTSUP;
|
1197 |
} |
1198 |
#endif /* !linux */ |
1199 |
|
1200 |
BlockDriver bdrv_host_device = { |
1201 |
"host_device",
|
1202 |
sizeof(BDRVRawState),
|
1203 |
NULL, /* no probe for protocols */ |
1204 |
hdev_open, |
1205 |
NULL,
|
1206 |
NULL,
|
1207 |
raw_close, |
1208 |
NULL,
|
1209 |
raw_flush, |
1210 |
|
1211 |
#ifdef CONFIG_AIO
|
1212 |
.bdrv_aio_read = raw_aio_read, |
1213 |
.bdrv_aio_write = raw_aio_write, |
1214 |
.bdrv_aio_cancel = raw_aio_cancel, |
1215 |
.aiocb_size = sizeof(RawAIOCB),
|
1216 |
#endif
|
1217 |
.bdrv_pread = raw_pread, |
1218 |
.bdrv_pwrite = raw_pwrite, |
1219 |
.bdrv_getlength = raw_getlength, |
1220 |
|
1221 |
/* removable device support */
|
1222 |
.bdrv_is_inserted = raw_is_inserted, |
1223 |
.bdrv_media_changed = raw_media_changed, |
1224 |
.bdrv_eject = raw_eject, |
1225 |
.bdrv_set_locked = raw_set_locked, |
1226 |
/* generic scsi device */
|
1227 |
.bdrv_ioctl = raw_ioctl, |
1228 |
}; |