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/*
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* Block driver for RAW files
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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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#ifdef QEMU_IMG
|
25 |
#include "qemu-common.h" |
26 |
#else
|
27 |
#include "vl.h" |
28 |
#include "exec-all.h" |
29 |
#endif
|
30 |
#include "block_int.h" |
31 |
#include <assert.h> |
32 |
#ifndef _WIN32
|
33 |
#include <aio.h> |
34 |
|
35 |
#ifdef CONFIG_COCOA
|
36 |
#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>
|
44 |
#include <CoreFoundation/CoreFoundation.h> |
45 |
#endif
|
46 |
|
47 |
#ifdef __sun__
|
48 |
#define _POSIX_PTHREAD_SEMANTICS 1 |
49 |
#include <signal.h> |
50 |
#include <sys/dkio.h> |
51 |
#endif
|
52 |
#ifdef __linux__
|
53 |
#include <sys/ioctl.h> |
54 |
#include <linux/cdrom.h> |
55 |
#include <linux/fd.h> |
56 |
#endif
|
57 |
#ifdef __FreeBSD__
|
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#include <sys/disk.h> |
59 |
#endif
|
60 |
|
61 |
//#define DEBUG_FLOPPY
|
62 |
|
63 |
//#define DEBUG_BLOCK
|
64 |
#if defined(DEBUG_BLOCK) && !defined(QEMU_IMG)
|
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#define DEBUG_BLOCK_PRINT(formatCstr, args...) do { if (loglevel != 0) \ |
66 |
{ fprintf(logfile, formatCstr, ##args); fflush(logfile); } } while (0) |
67 |
#else
|
68 |
#define DEBUG_BLOCK_PRINT(formatCstr, args...)
|
69 |
#endif
|
70 |
|
71 |
#define FTYPE_FILE 0 |
72 |
#define FTYPE_CD 1 |
73 |
#define FTYPE_FD 2 |
74 |
|
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/* if the FD is not accessed during that time (in ms), we try to
|
76 |
reopen it to see if the disk has been changed */
|
77 |
#define FD_OPEN_TIMEOUT 1000 |
78 |
|
79 |
typedef struct BDRVRawState { |
80 |
int fd;
|
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int type;
|
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unsigned int lseek_err_cnt; |
83 |
#if defined(__linux__)
|
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/* linux floppy specific */
|
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int fd_open_flags;
|
86 |
int64_t fd_open_time; |
87 |
int64_t fd_error_time; |
88 |
int fd_got_error;
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int fd_media_changed;
|
90 |
#endif
|
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} BDRVRawState; |
92 |
|
93 |
static int fd_open(BlockDriverState *bs); |
94 |
|
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static int raw_open(BlockDriverState *bs, const char *filename, int flags) |
96 |
{ |
97 |
BDRVRawState *s = bs->opaque; |
98 |
int fd, open_flags, ret;
|
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|
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s->lseek_err_cnt = 0;
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101 |
|
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open_flags = O_BINARY; |
103 |
if ((flags & BDRV_O_ACCESS) == O_RDWR) {
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open_flags |= O_RDWR; |
105 |
} else {
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open_flags |= O_RDONLY; |
107 |
bs->read_only = 1;
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} |
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if (flags & BDRV_O_CREAT)
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open_flags |= O_CREAT | O_TRUNC; |
111 |
|
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s->type = FTYPE_FILE; |
113 |
|
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fd = open(filename, open_flags, 0644);
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if (fd < 0) { |
116 |
ret = -errno; |
117 |
if (ret == -EROFS)
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ret = -EACCES; |
119 |
return ret;
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120 |
} |
121 |
s->fd = fd; |
122 |
return 0; |
123 |
} |
124 |
|
125 |
/* XXX: use host sector size if necessary with:
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126 |
#ifdef DIOCGSECTORSIZE
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{
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128 |
unsigned int sectorsize = 512;
|
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if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) &&
|
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sectorsize > bufsize)
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bufsize = sectorsize;
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132 |
}
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#endif
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#ifdef CONFIG_COCOA
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u_int32_t blockSize = 512;
|
136 |
if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) {
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bufsize = blockSize;
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138 |
}
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#endif
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*/
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141 |
|
142 |
static int raw_pread(BlockDriverState *bs, int64_t offset, |
143 |
uint8_t *buf, int count)
|
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{ |
145 |
BDRVRawState *s = bs->opaque; |
146 |
int ret;
|
147 |
|
148 |
ret = fd_open(bs); |
149 |
if (ret < 0) |
150 |
return ret;
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151 |
|
152 |
if (lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
153 |
++(s->lseek_err_cnt); |
154 |
if(s->lseek_err_cnt <= 10) { |
155 |
DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
156 |
"] lseek failed : %d = %s\n",
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157 |
s->fd, bs->filename, offset, buf, count, |
158 |
bs->total_sectors, errno, strerror(errno)); |
159 |
} |
160 |
return -1; |
161 |
} |
162 |
s->lseek_err_cnt=0;
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163 |
|
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ret = read(s->fd, buf, count); |
165 |
if (ret == count)
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goto label__raw_read__success;
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167 |
|
168 |
DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
169 |
"] read failed %d : %d = %s\n",
|
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s->fd, bs->filename, offset, buf, count, |
171 |
bs->total_sectors, ret, errno, strerror(errno)); |
172 |
|
173 |
/* Try harder for CDrom. */
|
174 |
if (bs->type == BDRV_TYPE_CDROM) {
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lseek(s->fd, offset, SEEK_SET); |
176 |
ret = read(s->fd, buf, count); |
177 |
if (ret == count)
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goto label__raw_read__success;
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lseek(s->fd, offset, SEEK_SET); |
180 |
ret = read(s->fd, buf, count); |
181 |
if (ret == count)
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goto label__raw_read__success;
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183 |
|
184 |
DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
185 |
"] retry read failed %d : %d = %s\n",
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s->fd, bs->filename, offset, buf, count, |
187 |
bs->total_sectors, ret, errno, strerror(errno)); |
188 |
} |
189 |
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label__raw_read__success:
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191 |
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return ret;
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} |
194 |
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static int raw_pwrite(BlockDriverState *bs, int64_t offset, |
196 |
const uint8_t *buf, int count) |
197 |
{ |
198 |
BDRVRawState *s = bs->opaque; |
199 |
int ret;
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200 |
|
201 |
ret = fd_open(bs); |
202 |
if (ret < 0) |
203 |
return ret;
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204 |
|
205 |
if (lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
206 |
++(s->lseek_err_cnt); |
207 |
if(s->lseek_err_cnt) {
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DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" |
209 |
PRId64 "] lseek failed : %d = %s\n",
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s->fd, bs->filename, offset, buf, count, |
211 |
bs->total_sectors, errno, strerror(errno)); |
212 |
} |
213 |
return -1; |
214 |
} |
215 |
s->lseek_err_cnt = 0;
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216 |
|
217 |
ret = write(s->fd, buf, count); |
218 |
if (ret == count)
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goto label__raw_write__success;
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220 |
|
221 |
DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
222 |
"] write failed %d : %d = %s\n",
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s->fd, bs->filename, offset, buf, count, |
224 |
bs->total_sectors, ret, errno, strerror(errno)); |
225 |
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label__raw_write__success:
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return ret;
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} |
230 |
|
231 |
/***********************************************************/
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/* Unix AIO using POSIX AIO */
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typedef struct RawAIOCB { |
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BlockDriverAIOCB common; |
236 |
struct aiocb aiocb;
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struct RawAIOCB *next;
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} RawAIOCB; |
239 |
|
240 |
static int aio_sig_num = SIGUSR2; |
241 |
static RawAIOCB *first_aio; /* AIO issued */ |
242 |
static int aio_initialized = 0; |
243 |
|
244 |
static void aio_signal_handler(int signum) |
245 |
{ |
246 |
#ifndef QEMU_IMG
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CPUState *env = cpu_single_env; |
248 |
if (env) {
|
249 |
/* stop the currently executing cpu because a timer occured */
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cpu_interrupt(env, CPU_INTERRUPT_EXIT); |
251 |
#ifdef USE_KQEMU
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252 |
if (env->kqemu_enabled) {
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kqemu_cpu_interrupt(env); |
254 |
} |
255 |
#endif
|
256 |
} |
257 |
#endif
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} |
259 |
|
260 |
void qemu_aio_init(void) |
261 |
{ |
262 |
struct sigaction act;
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263 |
|
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aio_initialized = 1;
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265 |
|
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sigfillset(&act.sa_mask); |
267 |
act.sa_flags = 0; /* do not restart syscalls to interrupt select() */ |
268 |
act.sa_handler = aio_signal_handler; |
269 |
sigaction(aio_sig_num, &act, NULL);
|
270 |
|
271 |
#if defined(__GLIBC__) && defined(__linux__)
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272 |
{ |
273 |
/* XXX: aio thread exit seems to hang on RedHat 9 and this init
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274 |
seems to fix the problem. */
|
275 |
struct aioinit ai;
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276 |
memset(&ai, 0, sizeof(ai)); |
277 |
ai.aio_threads = 1;
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278 |
ai.aio_num = 1;
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279 |
ai.aio_idle_time = 365 * 100000; |
280 |
aio_init(&ai); |
281 |
} |
282 |
#endif
|
283 |
} |
284 |
|
285 |
void qemu_aio_poll(void) |
286 |
{ |
287 |
RawAIOCB *acb, **pacb; |
288 |
int ret;
|
289 |
|
290 |
for(;;) {
|
291 |
pacb = &first_aio; |
292 |
for(;;) {
|
293 |
acb = *pacb; |
294 |
if (!acb)
|
295 |
goto the_end;
|
296 |
ret = aio_error(&acb->aiocb); |
297 |
if (ret == ECANCELED) {
|
298 |
/* remove the request */
|
299 |
*pacb = acb->next; |
300 |
qemu_aio_release(acb); |
301 |
} else if (ret != EINPROGRESS) { |
302 |
/* end of aio */
|
303 |
if (ret == 0) { |
304 |
ret = aio_return(&acb->aiocb); |
305 |
if (ret == acb->aiocb.aio_nbytes)
|
306 |
ret = 0;
|
307 |
else
|
308 |
ret = -EINVAL; |
309 |
} else {
|
310 |
ret = -ret; |
311 |
} |
312 |
/* remove the request */
|
313 |
*pacb = acb->next; |
314 |
/* call the callback */
|
315 |
acb->common.cb(acb->common.opaque, ret); |
316 |
qemu_aio_release(acb); |
317 |
break;
|
318 |
} else {
|
319 |
pacb = &acb->next; |
320 |
} |
321 |
} |
322 |
} |
323 |
the_end: ;
|
324 |
} |
325 |
|
326 |
/* Wait for all IO requests to complete. */
|
327 |
void qemu_aio_flush(void) |
328 |
{ |
329 |
qemu_aio_wait_start(); |
330 |
qemu_aio_poll(); |
331 |
while (first_aio) {
|
332 |
qemu_aio_wait(); |
333 |
} |
334 |
qemu_aio_wait_end(); |
335 |
} |
336 |
|
337 |
/* wait until at least one AIO was handled */
|
338 |
static sigset_t wait_oset;
|
339 |
|
340 |
void qemu_aio_wait_start(void) |
341 |
{ |
342 |
sigset_t set; |
343 |
|
344 |
if (!aio_initialized)
|
345 |
qemu_aio_init(); |
346 |
sigemptyset(&set); |
347 |
sigaddset(&set, aio_sig_num); |
348 |
sigprocmask(SIG_BLOCK, &set, &wait_oset); |
349 |
} |
350 |
|
351 |
void qemu_aio_wait(void) |
352 |
{ |
353 |
sigset_t set; |
354 |
int nb_sigs;
|
355 |
|
356 |
#ifndef QEMU_IMG
|
357 |
if (qemu_bh_poll())
|
358 |
return;
|
359 |
#endif
|
360 |
sigemptyset(&set); |
361 |
sigaddset(&set, aio_sig_num); |
362 |
sigwait(&set, &nb_sigs); |
363 |
qemu_aio_poll(); |
364 |
} |
365 |
|
366 |
void qemu_aio_wait_end(void) |
367 |
{ |
368 |
sigprocmask(SIG_SETMASK, &wait_oset, NULL);
|
369 |
} |
370 |
|
371 |
static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
|
372 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
373 |
BlockDriverCompletionFunc *cb, void *opaque)
|
374 |
{ |
375 |
BDRVRawState *s = bs->opaque; |
376 |
RawAIOCB *acb; |
377 |
|
378 |
if (fd_open(bs) < 0) |
379 |
return NULL; |
380 |
|
381 |
acb = qemu_aio_get(bs, cb, opaque); |
382 |
if (!acb)
|
383 |
return NULL; |
384 |
acb->aiocb.aio_fildes = s->fd; |
385 |
acb->aiocb.aio_sigevent.sigev_signo = aio_sig_num; |
386 |
acb->aiocb.aio_sigevent.sigev_notify = SIGEV_SIGNAL; |
387 |
acb->aiocb.aio_buf = buf; |
388 |
acb->aiocb.aio_nbytes = nb_sectors * 512;
|
389 |
acb->aiocb.aio_offset = sector_num * 512;
|
390 |
acb->next = first_aio; |
391 |
first_aio = acb; |
392 |
return acb;
|
393 |
} |
394 |
|
395 |
static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
|
396 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
397 |
BlockDriverCompletionFunc *cb, void *opaque)
|
398 |
{ |
399 |
RawAIOCB *acb; |
400 |
|
401 |
acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
402 |
if (!acb)
|
403 |
return NULL; |
404 |
if (aio_read(&acb->aiocb) < 0) { |
405 |
qemu_aio_release(acb); |
406 |
return NULL; |
407 |
} |
408 |
return &acb->common;
|
409 |
} |
410 |
|
411 |
static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
|
412 |
int64_t sector_num, const uint8_t *buf, int nb_sectors, |
413 |
BlockDriverCompletionFunc *cb, void *opaque)
|
414 |
{ |
415 |
RawAIOCB *acb; |
416 |
|
417 |
acb = raw_aio_setup(bs, sector_num, (uint8_t*)buf, nb_sectors, cb, opaque); |
418 |
if (!acb)
|
419 |
return NULL; |
420 |
if (aio_write(&acb->aiocb) < 0) { |
421 |
qemu_aio_release(acb); |
422 |
return NULL; |
423 |
} |
424 |
return &acb->common;
|
425 |
} |
426 |
|
427 |
static void raw_aio_cancel(BlockDriverAIOCB *blockacb) |
428 |
{ |
429 |
int ret;
|
430 |
RawAIOCB *acb = (RawAIOCB *)blockacb; |
431 |
RawAIOCB **pacb; |
432 |
|
433 |
ret = aio_cancel(acb->aiocb.aio_fildes, &acb->aiocb); |
434 |
if (ret == AIO_NOTCANCELED) {
|
435 |
/* fail safe: if the aio could not be canceled, we wait for
|
436 |
it */
|
437 |
while (aio_error(&acb->aiocb) == EINPROGRESS);
|
438 |
} |
439 |
|
440 |
/* remove the callback from the queue */
|
441 |
pacb = &first_aio; |
442 |
for(;;) {
|
443 |
if (*pacb == NULL) { |
444 |
break;
|
445 |
} else if (*pacb == acb) { |
446 |
*pacb = acb->next; |
447 |
qemu_aio_release(acb); |
448 |
break;
|
449 |
} |
450 |
pacb = &acb->next; |
451 |
} |
452 |
} |
453 |
|
454 |
static void raw_close(BlockDriverState *bs) |
455 |
{ |
456 |
BDRVRawState *s = bs->opaque; |
457 |
if (s->fd >= 0) { |
458 |
close(s->fd); |
459 |
s->fd = -1;
|
460 |
} |
461 |
} |
462 |
|
463 |
static int raw_truncate(BlockDriverState *bs, int64_t offset) |
464 |
{ |
465 |
BDRVRawState *s = bs->opaque; |
466 |
if (s->type != FTYPE_FILE)
|
467 |
return -ENOTSUP;
|
468 |
if (ftruncate(s->fd, offset) < 0) |
469 |
return -errno;
|
470 |
return 0; |
471 |
} |
472 |
|
473 |
static int64_t raw_getlength(BlockDriverState *bs)
|
474 |
{ |
475 |
BDRVRawState *s = bs->opaque; |
476 |
int fd = s->fd;
|
477 |
int64_t size; |
478 |
#ifdef _BSD
|
479 |
struct stat sb;
|
480 |
#endif
|
481 |
#ifdef __sun__
|
482 |
struct dk_minfo minfo;
|
483 |
int rv;
|
484 |
#endif
|
485 |
int ret;
|
486 |
|
487 |
ret = fd_open(bs); |
488 |
if (ret < 0) |
489 |
return ret;
|
490 |
|
491 |
#ifdef _BSD
|
492 |
if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
|
493 |
#ifdef DIOCGMEDIASIZE
|
494 |
if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
|
495 |
#endif
|
496 |
#ifdef CONFIG_COCOA
|
497 |
size = LONG_LONG_MAX; |
498 |
#else
|
499 |
size = lseek(fd, 0LL, SEEK_END);
|
500 |
#endif
|
501 |
} else
|
502 |
#endif
|
503 |
#ifdef __sun__
|
504 |
/*
|
505 |
* use the DKIOCGMEDIAINFO ioctl to read the size.
|
506 |
*/
|
507 |
rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo ); |
508 |
if ( rv != -1 ) { |
509 |
size = minfo.dki_lbsize * minfo.dki_capacity; |
510 |
} else /* there are reports that lseek on some devices |
511 |
fails, but irc discussion said that contingency
|
512 |
on contingency was overkill */
|
513 |
#endif
|
514 |
{ |
515 |
size = lseek(fd, 0, SEEK_END);
|
516 |
} |
517 |
return size;
|
518 |
} |
519 |
|
520 |
static int raw_create(const char *filename, int64_t total_size, |
521 |
const char *backing_file, int flags) |
522 |
{ |
523 |
int fd;
|
524 |
|
525 |
if (flags || backing_file)
|
526 |
return -ENOTSUP;
|
527 |
|
528 |
fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
529 |
0644);
|
530 |
if (fd < 0) |
531 |
return -EIO;
|
532 |
ftruncate(fd, total_size * 512);
|
533 |
close(fd); |
534 |
return 0; |
535 |
} |
536 |
|
537 |
static void raw_flush(BlockDriverState *bs) |
538 |
{ |
539 |
BDRVRawState *s = bs->opaque; |
540 |
fsync(s->fd); |
541 |
} |
542 |
|
543 |
BlockDriver bdrv_raw = { |
544 |
"raw",
|
545 |
sizeof(BDRVRawState),
|
546 |
NULL, /* no probe for protocols */ |
547 |
raw_open, |
548 |
NULL,
|
549 |
NULL,
|
550 |
raw_close, |
551 |
raw_create, |
552 |
raw_flush, |
553 |
|
554 |
.bdrv_aio_read = raw_aio_read, |
555 |
.bdrv_aio_write = raw_aio_write, |
556 |
.bdrv_aio_cancel = raw_aio_cancel, |
557 |
.aiocb_size = sizeof(RawAIOCB),
|
558 |
.protocol_name = "file",
|
559 |
.bdrv_pread = raw_pread, |
560 |
.bdrv_pwrite = raw_pwrite, |
561 |
.bdrv_truncate = raw_truncate, |
562 |
.bdrv_getlength = raw_getlength, |
563 |
}; |
564 |
|
565 |
/***********************************************/
|
566 |
/* host device */
|
567 |
|
568 |
#ifdef CONFIG_COCOA
|
569 |
static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator );
|
570 |
static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ); |
571 |
|
572 |
kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ) |
573 |
{ |
574 |
kern_return_t kernResult; |
575 |
mach_port_t masterPort; |
576 |
CFMutableDictionaryRef classesToMatch; |
577 |
|
578 |
kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort ); |
579 |
if ( KERN_SUCCESS != kernResult ) {
|
580 |
printf( "IOMasterPort returned %d\n", kernResult );
|
581 |
} |
582 |
|
583 |
classesToMatch = IOServiceMatching( kIOCDMediaClass ); |
584 |
if ( classesToMatch == NULL ) { |
585 |
printf( "IOServiceMatching returned a NULL dictionary.\n" );
|
586 |
} else {
|
587 |
CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue ); |
588 |
} |
589 |
kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator ); |
590 |
if ( KERN_SUCCESS != kernResult )
|
591 |
{ |
592 |
printf( "IOServiceGetMatchingServices returned %d\n", kernResult );
|
593 |
} |
594 |
|
595 |
return kernResult;
|
596 |
} |
597 |
|
598 |
kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize )
|
599 |
{ |
600 |
io_object_t nextMedia; |
601 |
kern_return_t kernResult = KERN_FAILURE; |
602 |
*bsdPath = '\0';
|
603 |
nextMedia = IOIteratorNext( mediaIterator ); |
604 |
if ( nextMedia )
|
605 |
{ |
606 |
CFTypeRef bsdPathAsCFString; |
607 |
bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 );
|
608 |
if ( bsdPathAsCFString ) {
|
609 |
size_t devPathLength; |
610 |
strcpy( bsdPath, _PATH_DEV ); |
611 |
strcat( bsdPath, "r" );
|
612 |
devPathLength = strlen( bsdPath ); |
613 |
if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) {
|
614 |
kernResult = KERN_SUCCESS; |
615 |
} |
616 |
CFRelease( bsdPathAsCFString ); |
617 |
} |
618 |
IOObjectRelease( nextMedia ); |
619 |
} |
620 |
|
621 |
return kernResult;
|
622 |
} |
623 |
|
624 |
#endif
|
625 |
|
626 |
static int hdev_open(BlockDriverState *bs, const char *filename, int flags) |
627 |
{ |
628 |
BDRVRawState *s = bs->opaque; |
629 |
int fd, open_flags, ret;
|
630 |
|
631 |
#ifdef CONFIG_COCOA
|
632 |
if (strstart(filename, "/dev/cdrom", NULL)) { |
633 |
kern_return_t kernResult; |
634 |
io_iterator_t mediaIterator; |
635 |
char bsdPath[ MAXPATHLEN ];
|
636 |
int fd;
|
637 |
|
638 |
kernResult = FindEjectableCDMedia( &mediaIterator ); |
639 |
kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) );
|
640 |
|
641 |
if ( bsdPath[ 0 ] != '\0' ) { |
642 |
strcat(bsdPath,"s0");
|
643 |
/* some CDs don't have a partition 0 */
|
644 |
fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE); |
645 |
if (fd < 0) { |
646 |
bsdPath[strlen(bsdPath)-1] = '1'; |
647 |
} else {
|
648 |
close(fd); |
649 |
} |
650 |
filename = bsdPath; |
651 |
} |
652 |
|
653 |
if ( mediaIterator )
|
654 |
IOObjectRelease( mediaIterator ); |
655 |
} |
656 |
#endif
|
657 |
open_flags = O_BINARY; |
658 |
if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
659 |
open_flags |= O_RDWR; |
660 |
} else {
|
661 |
open_flags |= O_RDONLY; |
662 |
bs->read_only = 1;
|
663 |
} |
664 |
|
665 |
s->type = FTYPE_FILE; |
666 |
#if defined(__linux__)
|
667 |
if (strstart(filename, "/dev/cd", NULL)) { |
668 |
/* open will not fail even if no CD is inserted */
|
669 |
open_flags |= O_NONBLOCK; |
670 |
s->type = FTYPE_CD; |
671 |
} else if (strstart(filename, "/dev/fd", NULL)) { |
672 |
s->type = FTYPE_FD; |
673 |
s->fd_open_flags = open_flags; |
674 |
/* open will not fail even if no floppy is inserted */
|
675 |
open_flags |= O_NONBLOCK; |
676 |
} |
677 |
#endif
|
678 |
fd = open(filename, open_flags, 0644);
|
679 |
if (fd < 0) { |
680 |
ret = -errno; |
681 |
if (ret == -EROFS)
|
682 |
ret = -EACCES; |
683 |
return ret;
|
684 |
} |
685 |
s->fd = fd; |
686 |
#if defined(__linux__)
|
687 |
/* close fd so that we can reopen it as needed */
|
688 |
if (s->type == FTYPE_FD) {
|
689 |
close(s->fd); |
690 |
s->fd = -1;
|
691 |
s->fd_media_changed = 1;
|
692 |
} |
693 |
#endif
|
694 |
return 0; |
695 |
} |
696 |
|
697 |
#if defined(__linux__) && !defined(QEMU_IMG)
|
698 |
|
699 |
/* Note: we do not have a reliable method to detect if the floppy is
|
700 |
present. The current method is to try to open the floppy at every
|
701 |
I/O and to keep it opened during a few hundreds of ms. */
|
702 |
static int fd_open(BlockDriverState *bs) |
703 |
{ |
704 |
BDRVRawState *s = bs->opaque; |
705 |
int last_media_present;
|
706 |
|
707 |
if (s->type != FTYPE_FD)
|
708 |
return 0; |
709 |
last_media_present = (s->fd >= 0);
|
710 |
if (s->fd >= 0 && |
711 |
(qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) { |
712 |
close(s->fd); |
713 |
s->fd = -1;
|
714 |
#ifdef DEBUG_FLOPPY
|
715 |
printf("Floppy closed\n");
|
716 |
#endif
|
717 |
} |
718 |
if (s->fd < 0) { |
719 |
if (s->fd_got_error &&
|
720 |
(qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) { |
721 |
#ifdef DEBUG_FLOPPY
|
722 |
printf("No floppy (open delayed)\n");
|
723 |
#endif
|
724 |
return -EIO;
|
725 |
} |
726 |
s->fd = open(bs->filename, s->fd_open_flags); |
727 |
if (s->fd < 0) { |
728 |
s->fd_error_time = qemu_get_clock(rt_clock); |
729 |
s->fd_got_error = 1;
|
730 |
if (last_media_present)
|
731 |
s->fd_media_changed = 1;
|
732 |
#ifdef DEBUG_FLOPPY
|
733 |
printf("No floppy\n");
|
734 |
#endif
|
735 |
return -EIO;
|
736 |
} |
737 |
#ifdef DEBUG_FLOPPY
|
738 |
printf("Floppy opened\n");
|
739 |
#endif
|
740 |
} |
741 |
if (!last_media_present)
|
742 |
s->fd_media_changed = 1;
|
743 |
s->fd_open_time = qemu_get_clock(rt_clock); |
744 |
s->fd_got_error = 0;
|
745 |
return 0; |
746 |
} |
747 |
#else
|
748 |
static int fd_open(BlockDriverState *bs) |
749 |
{ |
750 |
return 0; |
751 |
} |
752 |
#endif
|
753 |
|
754 |
#if defined(__linux__)
|
755 |
|
756 |
static int raw_is_inserted(BlockDriverState *bs) |
757 |
{ |
758 |
BDRVRawState *s = bs->opaque; |
759 |
int ret;
|
760 |
|
761 |
switch(s->type) {
|
762 |
case FTYPE_CD:
|
763 |
ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); |
764 |
if (ret == CDS_DISC_OK)
|
765 |
return 1; |
766 |
else
|
767 |
return 0; |
768 |
break;
|
769 |
case FTYPE_FD:
|
770 |
ret = fd_open(bs); |
771 |
return (ret >= 0); |
772 |
default:
|
773 |
return 1; |
774 |
} |
775 |
} |
776 |
|
777 |
/* currently only used by fdc.c, but a CD version would be good too */
|
778 |
static int raw_media_changed(BlockDriverState *bs) |
779 |
{ |
780 |
BDRVRawState *s = bs->opaque; |
781 |
|
782 |
switch(s->type) {
|
783 |
case FTYPE_FD:
|
784 |
{ |
785 |
int ret;
|
786 |
/* XXX: we do not have a true media changed indication. It
|
787 |
does not work if the floppy is changed without trying
|
788 |
to read it */
|
789 |
fd_open(bs); |
790 |
ret = s->fd_media_changed; |
791 |
s->fd_media_changed = 0;
|
792 |
#ifdef DEBUG_FLOPPY
|
793 |
printf("Floppy changed=%d\n", ret);
|
794 |
#endif
|
795 |
return ret;
|
796 |
} |
797 |
default:
|
798 |
return -ENOTSUP;
|
799 |
} |
800 |
} |
801 |
|
802 |
static int raw_eject(BlockDriverState *bs, int eject_flag) |
803 |
{ |
804 |
BDRVRawState *s = bs->opaque; |
805 |
|
806 |
switch(s->type) {
|
807 |
case FTYPE_CD:
|
808 |
if (eject_flag) {
|
809 |
if (ioctl (s->fd, CDROMEJECT, NULL) < 0) |
810 |
perror("CDROMEJECT");
|
811 |
} else {
|
812 |
if (ioctl (s->fd, CDROMCLOSETRAY, NULL) < 0) |
813 |
perror("CDROMEJECT");
|
814 |
} |
815 |
break;
|
816 |
case FTYPE_FD:
|
817 |
{ |
818 |
int fd;
|
819 |
if (s->fd >= 0) { |
820 |
close(s->fd); |
821 |
s->fd = -1;
|
822 |
} |
823 |
fd = open(bs->filename, s->fd_open_flags | O_NONBLOCK); |
824 |
if (fd >= 0) { |
825 |
if (ioctl(fd, FDEJECT, 0) < 0) |
826 |
perror("FDEJECT");
|
827 |
close(fd); |
828 |
} |
829 |
} |
830 |
break;
|
831 |
default:
|
832 |
return -ENOTSUP;
|
833 |
} |
834 |
return 0; |
835 |
} |
836 |
|
837 |
static int raw_set_locked(BlockDriverState *bs, int locked) |
838 |
{ |
839 |
BDRVRawState *s = bs->opaque; |
840 |
|
841 |
switch(s->type) {
|
842 |
case FTYPE_CD:
|
843 |
if (ioctl (s->fd, CDROM_LOCKDOOR, locked) < 0) { |
844 |
/* Note: an error can happen if the distribution automatically
|
845 |
mounts the CD-ROM */
|
846 |
// perror("CDROM_LOCKDOOR");
|
847 |
} |
848 |
break;
|
849 |
default:
|
850 |
return -ENOTSUP;
|
851 |
} |
852 |
return 0; |
853 |
} |
854 |
|
855 |
#else
|
856 |
|
857 |
static int raw_is_inserted(BlockDriverState *bs) |
858 |
{ |
859 |
return 1; |
860 |
} |
861 |
|
862 |
static int raw_media_changed(BlockDriverState *bs) |
863 |
{ |
864 |
return -ENOTSUP;
|
865 |
} |
866 |
|
867 |
static int raw_eject(BlockDriverState *bs, int eject_flag) |
868 |
{ |
869 |
return -ENOTSUP;
|
870 |
} |
871 |
|
872 |
static int raw_set_locked(BlockDriverState *bs, int locked) |
873 |
{ |
874 |
return -ENOTSUP;
|
875 |
} |
876 |
|
877 |
#endif /* !linux */ |
878 |
|
879 |
BlockDriver bdrv_host_device = { |
880 |
"host_device",
|
881 |
sizeof(BDRVRawState),
|
882 |
NULL, /* no probe for protocols */ |
883 |
hdev_open, |
884 |
NULL,
|
885 |
NULL,
|
886 |
raw_close, |
887 |
NULL,
|
888 |
raw_flush, |
889 |
|
890 |
.bdrv_aio_read = raw_aio_read, |
891 |
.bdrv_aio_write = raw_aio_write, |
892 |
.bdrv_aio_cancel = raw_aio_cancel, |
893 |
.aiocb_size = sizeof(RawAIOCB),
|
894 |
.bdrv_pread = raw_pread, |
895 |
.bdrv_pwrite = raw_pwrite, |
896 |
.bdrv_getlength = raw_getlength, |
897 |
|
898 |
/* removable device support */
|
899 |
.bdrv_is_inserted = raw_is_inserted, |
900 |
.bdrv_media_changed = raw_media_changed, |
901 |
.bdrv_eject = raw_eject, |
902 |
.bdrv_set_locked = raw_set_locked, |
903 |
}; |
904 |
|
905 |
#else /* _WIN32 */ |
906 |
|
907 |
/* XXX: use another file ? */
|
908 |
#include <winioctl.h> |
909 |
|
910 |
#define FTYPE_FILE 0 |
911 |
#define FTYPE_CD 1 |
912 |
#define FTYPE_HARDDISK 2 |
913 |
|
914 |
typedef struct BDRVRawState { |
915 |
HANDLE hfile; |
916 |
int type;
|
917 |
char drive_path[16]; /* format: "d:\" */ |
918 |
} BDRVRawState; |
919 |
|
920 |
typedef struct RawAIOCB { |
921 |
BlockDriverAIOCB common; |
922 |
HANDLE hEvent; |
923 |
OVERLAPPED ov; |
924 |
int count;
|
925 |
} RawAIOCB; |
926 |
|
927 |
int qemu_ftruncate64(int fd, int64_t length) |
928 |
{ |
929 |
LARGE_INTEGER li; |
930 |
LONG high; |
931 |
HANDLE h; |
932 |
BOOL res; |
933 |
|
934 |
if ((GetVersion() & 0x80000000UL) && (length >> 32) != 0) |
935 |
return -1; |
936 |
|
937 |
h = (HANDLE)_get_osfhandle(fd); |
938 |
|
939 |
/* get current position, ftruncate do not change position */
|
940 |
li.HighPart = 0;
|
941 |
li.LowPart = SetFilePointer (h, 0, &li.HighPart, FILE_CURRENT);
|
942 |
if (li.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR) |
943 |
return -1; |
944 |
|
945 |
high = length >> 32;
|
946 |
if (!SetFilePointer(h, (DWORD) length, &high, FILE_BEGIN))
|
947 |
return -1; |
948 |
res = SetEndOfFile(h); |
949 |
|
950 |
/* back to old position */
|
951 |
SetFilePointer(h, li.LowPart, &li.HighPart, FILE_BEGIN); |
952 |
return res ? 0 : -1; |
953 |
} |
954 |
|
955 |
static int set_sparse(int fd) |
956 |
{ |
957 |
DWORD returned; |
958 |
return (int) DeviceIoControl((HANDLE)_get_osfhandle(fd), FSCTL_SET_SPARSE, |
959 |
NULL, 0, NULL, 0, &returned, NULL); |
960 |
} |
961 |
|
962 |
static int raw_open(BlockDriverState *bs, const char *filename, int flags) |
963 |
{ |
964 |
BDRVRawState *s = bs->opaque; |
965 |
int access_flags, create_flags;
|
966 |
DWORD overlapped; |
967 |
|
968 |
s->type = FTYPE_FILE; |
969 |
|
970 |
if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
971 |
access_flags = GENERIC_READ | GENERIC_WRITE; |
972 |
} else {
|
973 |
access_flags = GENERIC_READ; |
974 |
} |
975 |
if (flags & BDRV_O_CREAT) {
|
976 |
create_flags = CREATE_ALWAYS; |
977 |
} else {
|
978 |
create_flags = OPEN_EXISTING; |
979 |
} |
980 |
#ifdef QEMU_IMG
|
981 |
overlapped = FILE_ATTRIBUTE_NORMAL; |
982 |
#else
|
983 |
overlapped = FILE_FLAG_OVERLAPPED; |
984 |
#endif
|
985 |
s->hfile = CreateFile(filename, access_flags, |
986 |
FILE_SHARE_READ, NULL,
|
987 |
create_flags, overlapped, NULL);
|
988 |
if (s->hfile == INVALID_HANDLE_VALUE) {
|
989 |
int err = GetLastError();
|
990 |
|
991 |
if (err == ERROR_ACCESS_DENIED)
|
992 |
return -EACCES;
|
993 |
return -1; |
994 |
} |
995 |
return 0; |
996 |
} |
997 |
|
998 |
static int raw_pread(BlockDriverState *bs, int64_t offset, |
999 |
uint8_t *buf, int count)
|
1000 |
{ |
1001 |
BDRVRawState *s = bs->opaque; |
1002 |
OVERLAPPED ov; |
1003 |
DWORD ret_count; |
1004 |
int ret;
|
1005 |
|
1006 |
memset(&ov, 0, sizeof(ov)); |
1007 |
ov.Offset = offset; |
1008 |
ov.OffsetHigh = offset >> 32;
|
1009 |
ret = ReadFile(s->hfile, buf, count, &ret_count, &ov); |
1010 |
if (!ret) {
|
1011 |
ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE); |
1012 |
if (!ret)
|
1013 |
return -EIO;
|
1014 |
else
|
1015 |
return ret_count;
|
1016 |
} |
1017 |
return ret_count;
|
1018 |
} |
1019 |
|
1020 |
static int raw_pwrite(BlockDriverState *bs, int64_t offset, |
1021 |
const uint8_t *buf, int count) |
1022 |
{ |
1023 |
BDRVRawState *s = bs->opaque; |
1024 |
OVERLAPPED ov; |
1025 |
DWORD ret_count; |
1026 |
int ret;
|
1027 |
|
1028 |
memset(&ov, 0, sizeof(ov)); |
1029 |
ov.Offset = offset; |
1030 |
ov.OffsetHigh = offset >> 32;
|
1031 |
ret = WriteFile(s->hfile, buf, count, &ret_count, &ov); |
1032 |
if (!ret) {
|
1033 |
ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE); |
1034 |
if (!ret)
|
1035 |
return -EIO;
|
1036 |
else
|
1037 |
return ret_count;
|
1038 |
} |
1039 |
return ret_count;
|
1040 |
} |
1041 |
|
1042 |
#if 0
|
1043 |
#ifndef QEMU_IMG
|
1044 |
static void raw_aio_cb(void *opaque)
|
1045 |
{
|
1046 |
RawAIOCB *acb = opaque;
|
1047 |
BlockDriverState *bs = acb->common.bs;
|
1048 |
BDRVRawState *s = bs->opaque;
|
1049 |
DWORD ret_count;
|
1050 |
int ret;
|
1051 |
|
1052 |
ret = GetOverlappedResult(s->hfile, &acb->ov, &ret_count, TRUE);
|
1053 |
if (!ret || ret_count != acb->count) {
|
1054 |
acb->common.cb(acb->common.opaque, -EIO);
|
1055 |
} else {
|
1056 |
acb->common.cb(acb->common.opaque, 0);
|
1057 |
}
|
1058 |
}
|
1059 |
#endif
|
1060 |
|
1061 |
static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
|
1062 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
1063 |
BlockDriverCompletionFunc *cb, void *opaque)
|
1064 |
{ |
1065 |
RawAIOCB *acb; |
1066 |
int64_t offset; |
1067 |
|
1068 |
acb = qemu_aio_get(bs, cb, opaque); |
1069 |
if (acb->hEvent) {
|
1070 |
acb->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); |
1071 |
if (!acb->hEvent) {
|
1072 |
qemu_aio_release(acb); |
1073 |
return NULL; |
1074 |
} |
1075 |
} |
1076 |
memset(&acb->ov, 0, sizeof(acb->ov)); |
1077 |
offset = sector_num * 512;
|
1078 |
acb->ov.Offset = offset; |
1079 |
acb->ov.OffsetHigh = offset >> 32;
|
1080 |
acb->ov.hEvent = acb->hEvent; |
1081 |
acb->count = nb_sectors * 512;
|
1082 |
#ifndef QEMU_IMG
|
1083 |
qemu_add_wait_object(acb->ov.hEvent, raw_aio_cb, acb); |
1084 |
#endif
|
1085 |
return acb;
|
1086 |
} |
1087 |
|
1088 |
static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
|
1089 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
1090 |
BlockDriverCompletionFunc *cb, void *opaque)
|
1091 |
{ |
1092 |
BDRVRawState *s = bs->opaque; |
1093 |
RawAIOCB *acb; |
1094 |
int ret;
|
1095 |
|
1096 |
acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
1097 |
if (!acb)
|
1098 |
return NULL; |
1099 |
ret = ReadFile(s->hfile, buf, acb->count, NULL, &acb->ov);
|
1100 |
if (!ret) {
|
1101 |
qemu_aio_release(acb); |
1102 |
return NULL; |
1103 |
} |
1104 |
#ifdef QEMU_IMG
|
1105 |
qemu_aio_release(acb); |
1106 |
#endif
|
1107 |
return (BlockDriverAIOCB *)acb;
|
1108 |
} |
1109 |
|
1110 |
static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
|
1111 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
1112 |
BlockDriverCompletionFunc *cb, void *opaque)
|
1113 |
{ |
1114 |
BDRVRawState *s = bs->opaque; |
1115 |
RawAIOCB *acb; |
1116 |
int ret;
|
1117 |
|
1118 |
acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
1119 |
if (!acb)
|
1120 |
return NULL; |
1121 |
ret = WriteFile(s->hfile, buf, acb->count, NULL, &acb->ov);
|
1122 |
if (!ret) {
|
1123 |
qemu_aio_release(acb); |
1124 |
return NULL; |
1125 |
} |
1126 |
#ifdef QEMU_IMG
|
1127 |
qemu_aio_release(acb); |
1128 |
#endif
|
1129 |
return (BlockDriverAIOCB *)acb;
|
1130 |
} |
1131 |
|
1132 |
static void raw_aio_cancel(BlockDriverAIOCB *blockacb) |
1133 |
{ |
1134 |
#ifndef QEMU_IMG
|
1135 |
RawAIOCB *acb = (RawAIOCB *)blockacb; |
1136 |
BlockDriverState *bs = acb->common.bs; |
1137 |
BDRVRawState *s = bs->opaque; |
1138 |
|
1139 |
qemu_del_wait_object(acb->ov.hEvent, raw_aio_cb, acb); |
1140 |
/* XXX: if more than one async I/O it is not correct */
|
1141 |
CancelIo(s->hfile); |
1142 |
qemu_aio_release(acb); |
1143 |
#endif
|
1144 |
} |
1145 |
#endif /* #if 0 */ |
1146 |
|
1147 |
static void raw_flush(BlockDriverState *bs) |
1148 |
{ |
1149 |
BDRVRawState *s = bs->opaque; |
1150 |
FlushFileBuffers(s->hfile); |
1151 |
} |
1152 |
|
1153 |
static void raw_close(BlockDriverState *bs) |
1154 |
{ |
1155 |
BDRVRawState *s = bs->opaque; |
1156 |
CloseHandle(s->hfile); |
1157 |
} |
1158 |
|
1159 |
static int raw_truncate(BlockDriverState *bs, int64_t offset) |
1160 |
{ |
1161 |
BDRVRawState *s = bs->opaque; |
1162 |
DWORD low, high; |
1163 |
|
1164 |
low = offset; |
1165 |
high = offset >> 32;
|
1166 |
if (!SetFilePointer(s->hfile, low, &high, FILE_BEGIN))
|
1167 |
return -EIO;
|
1168 |
if (!SetEndOfFile(s->hfile))
|
1169 |
return -EIO;
|
1170 |
return 0; |
1171 |
} |
1172 |
|
1173 |
static int64_t raw_getlength(BlockDriverState *bs)
|
1174 |
{ |
1175 |
BDRVRawState *s = bs->opaque; |
1176 |
LARGE_INTEGER l; |
1177 |
ULARGE_INTEGER available, total, total_free; |
1178 |
DISK_GEOMETRY_EX dg; |
1179 |
DWORD count; |
1180 |
BOOL status; |
1181 |
|
1182 |
switch(s->type) {
|
1183 |
case FTYPE_FILE:
|
1184 |
l.LowPart = GetFileSize(s->hfile, &l.HighPart); |
1185 |
if (l.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR) |
1186 |
return -EIO;
|
1187 |
break;
|
1188 |
case FTYPE_CD:
|
1189 |
if (!GetDiskFreeSpaceEx(s->drive_path, &available, &total, &total_free))
|
1190 |
return -EIO;
|
1191 |
l.QuadPart = total.QuadPart; |
1192 |
break;
|
1193 |
case FTYPE_HARDDISK:
|
1194 |
status = DeviceIoControl(s->hfile, IOCTL_DISK_GET_DRIVE_GEOMETRY_EX, |
1195 |
NULL, 0, &dg, sizeof(dg), &count, NULL); |
1196 |
if (status != 0) { |
1197 |
l = dg.DiskSize; |
1198 |
} |
1199 |
break;
|
1200 |
default:
|
1201 |
return -EIO;
|
1202 |
} |
1203 |
return l.QuadPart;
|
1204 |
} |
1205 |
|
1206 |
static int raw_create(const char *filename, int64_t total_size, |
1207 |
const char *backing_file, int flags) |
1208 |
{ |
1209 |
int fd;
|
1210 |
|
1211 |
if (flags || backing_file)
|
1212 |
return -ENOTSUP;
|
1213 |
|
1214 |
fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
1215 |
0644);
|
1216 |
if (fd < 0) |
1217 |
return -EIO;
|
1218 |
set_sparse(fd); |
1219 |
ftruncate(fd, total_size * 512);
|
1220 |
close(fd); |
1221 |
return 0; |
1222 |
} |
1223 |
|
1224 |
void qemu_aio_init(void) |
1225 |
{ |
1226 |
} |
1227 |
|
1228 |
void qemu_aio_poll(void) |
1229 |
{ |
1230 |
} |
1231 |
|
1232 |
void qemu_aio_flush(void) |
1233 |
{ |
1234 |
} |
1235 |
|
1236 |
void qemu_aio_wait_start(void) |
1237 |
{ |
1238 |
} |
1239 |
|
1240 |
void qemu_aio_wait(void) |
1241 |
{ |
1242 |
#ifndef QEMU_IMG
|
1243 |
qemu_bh_poll(); |
1244 |
#endif
|
1245 |
} |
1246 |
|
1247 |
void qemu_aio_wait_end(void) |
1248 |
{ |
1249 |
} |
1250 |
|
1251 |
BlockDriver bdrv_raw = { |
1252 |
"raw",
|
1253 |
sizeof(BDRVRawState),
|
1254 |
NULL, /* no probe for protocols */ |
1255 |
raw_open, |
1256 |
NULL,
|
1257 |
NULL,
|
1258 |
raw_close, |
1259 |
raw_create, |
1260 |
raw_flush, |
1261 |
|
1262 |
#if 0
|
1263 |
.bdrv_aio_read = raw_aio_read,
|
1264 |
.bdrv_aio_write = raw_aio_write,
|
1265 |
.bdrv_aio_cancel = raw_aio_cancel,
|
1266 |
.aiocb_size = sizeof(RawAIOCB);
|
1267 |
#endif
|
1268 |
.protocol_name = "file",
|
1269 |
.bdrv_pread = raw_pread, |
1270 |
.bdrv_pwrite = raw_pwrite, |
1271 |
.bdrv_truncate = raw_truncate, |
1272 |
.bdrv_getlength = raw_getlength, |
1273 |
}; |
1274 |
|
1275 |
/***********************************************/
|
1276 |
/* host device */
|
1277 |
|
1278 |
static int find_cdrom(char *cdrom_name, int cdrom_name_size) |
1279 |
{ |
1280 |
char drives[256], *pdrv = drives; |
1281 |
UINT type; |
1282 |
|
1283 |
memset(drives, 0, sizeof(drives)); |
1284 |
GetLogicalDriveStrings(sizeof(drives), drives);
|
1285 |
while(pdrv[0] != '\0') { |
1286 |
type = GetDriveType(pdrv); |
1287 |
switch(type) {
|
1288 |
case DRIVE_CDROM:
|
1289 |
snprintf(cdrom_name, cdrom_name_size, "\\\\.\\%c:", pdrv[0]); |
1290 |
return 0; |
1291 |
break;
|
1292 |
} |
1293 |
pdrv += lstrlen(pdrv) + 1;
|
1294 |
} |
1295 |
return -1; |
1296 |
} |
1297 |
|
1298 |
static int find_device_type(BlockDriverState *bs, const char *filename) |
1299 |
{ |
1300 |
BDRVRawState *s = bs->opaque; |
1301 |
UINT type; |
1302 |
const char *p; |
1303 |
|
1304 |
if (strstart(filename, "\\\\.\\", &p) || |
1305 |
strstart(filename, "//./", &p)) {
|
1306 |
if (stristart(p, "PhysicalDrive", NULL)) |
1307 |
return FTYPE_HARDDISK;
|
1308 |
snprintf(s->drive_path, sizeof(s->drive_path), "%c:\\", p[0]); |
1309 |
type = GetDriveType(s->drive_path); |
1310 |
if (type == DRIVE_CDROM)
|
1311 |
return FTYPE_CD;
|
1312 |
else
|
1313 |
return FTYPE_FILE;
|
1314 |
} else {
|
1315 |
return FTYPE_FILE;
|
1316 |
} |
1317 |
} |
1318 |
|
1319 |
static int hdev_open(BlockDriverState *bs, const char *filename, int flags) |
1320 |
{ |
1321 |
BDRVRawState *s = bs->opaque; |
1322 |
int access_flags, create_flags;
|
1323 |
DWORD overlapped; |
1324 |
char device_name[64]; |
1325 |
|
1326 |
if (strstart(filename, "/dev/cdrom", NULL)) { |
1327 |
if (find_cdrom(device_name, sizeof(device_name)) < 0) |
1328 |
return -ENOENT;
|
1329 |
filename = device_name; |
1330 |
} else {
|
1331 |
/* transform drive letters into device name */
|
1332 |
if (((filename[0] >= 'a' && filename[0] <= 'z') || |
1333 |
(filename[0] >= 'A' && filename[0] <= 'Z')) && |
1334 |
filename[1] == ':' && filename[2] == '\0') { |
1335 |
snprintf(device_name, sizeof(device_name), "\\\\.\\%c:", filename[0]); |
1336 |
filename = device_name; |
1337 |
} |
1338 |
} |
1339 |
s->type = find_device_type(bs, filename); |
1340 |
|
1341 |
if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
1342 |
access_flags = GENERIC_READ | GENERIC_WRITE; |
1343 |
} else {
|
1344 |
access_flags = GENERIC_READ; |
1345 |
} |
1346 |
create_flags = OPEN_EXISTING; |
1347 |
|
1348 |
#ifdef QEMU_IMG
|
1349 |
overlapped = FILE_ATTRIBUTE_NORMAL; |
1350 |
#else
|
1351 |
overlapped = FILE_FLAG_OVERLAPPED; |
1352 |
#endif
|
1353 |
s->hfile = CreateFile(filename, access_flags, |
1354 |
FILE_SHARE_READ, NULL,
|
1355 |
create_flags, overlapped, NULL);
|
1356 |
if (s->hfile == INVALID_HANDLE_VALUE) {
|
1357 |
int err = GetLastError();
|
1358 |
|
1359 |
if (err == ERROR_ACCESS_DENIED)
|
1360 |
return -EACCES;
|
1361 |
return -1; |
1362 |
} |
1363 |
return 0; |
1364 |
} |
1365 |
|
1366 |
#if 0
|
1367 |
/***********************************************/
|
1368 |
/* removable device additional commands */
|
1369 |
|
1370 |
static int raw_is_inserted(BlockDriverState *bs)
|
1371 |
{
|
1372 |
return 1;
|
1373 |
}
|
1374 |
|
1375 |
static int raw_media_changed(BlockDriverState *bs)
|
1376 |
{
|
1377 |
return -ENOTSUP;
|
1378 |
}
|
1379 |
|
1380 |
static int raw_eject(BlockDriverState *bs, int eject_flag)
|
1381 |
{
|
1382 |
DWORD ret_count;
|
1383 |
|
1384 |
if (s->type == FTYPE_FILE)
|
1385 |
return -ENOTSUP;
|
1386 |
if (eject_flag) {
|
1387 |
DeviceIoControl(s->hfile, IOCTL_STORAGE_EJECT_MEDIA,
|
1388 |
NULL, 0, NULL, 0, &lpBytesReturned, NULL);
|
1389 |
} else {
|
1390 |
DeviceIoControl(s->hfile, IOCTL_STORAGE_LOAD_MEDIA,
|
1391 |
NULL, 0, NULL, 0, &lpBytesReturned, NULL);
|
1392 |
}
|
1393 |
}
|
1394 |
|
1395 |
static int raw_set_locked(BlockDriverState *bs, int locked)
|
1396 |
{
|
1397 |
return -ENOTSUP;
|
1398 |
}
|
1399 |
#endif
|
1400 |
|
1401 |
BlockDriver bdrv_host_device = { |
1402 |
"host_device",
|
1403 |
sizeof(BDRVRawState),
|
1404 |
NULL, /* no probe for protocols */ |
1405 |
hdev_open, |
1406 |
NULL,
|
1407 |
NULL,
|
1408 |
raw_close, |
1409 |
NULL,
|
1410 |
raw_flush, |
1411 |
|
1412 |
#if 0
|
1413 |
.bdrv_aio_read = raw_aio_read,
|
1414 |
.bdrv_aio_write = raw_aio_write,
|
1415 |
.bdrv_aio_cancel = raw_aio_cancel,
|
1416 |
.aiocb_size = sizeof(RawAIOCB);
|
1417 |
#endif
|
1418 |
.bdrv_pread = raw_pread, |
1419 |
.bdrv_pwrite = raw_pwrite, |
1420 |
.bdrv_getlength = raw_getlength, |
1421 |
}; |
1422 |
#endif /* _WIN32 */ |