root / block-raw.c @ 8f40c388
History | View | Annotate | Download (31.8 kB)
1 | 83f64091 | bellard | /*
|
---|---|---|---|
2 | 83f64091 | bellard | * Block driver for RAW files
|
3 | 83f64091 | bellard | *
|
4 | 83f64091 | bellard | * Copyright (c) 2006 Fabrice Bellard
|
5 | 83f64091 | bellard | *
|
6 | 83f64091 | bellard | * Permission is hereby granted, free of charge, to any person obtaining a copy
|
7 | 83f64091 | bellard | * of this software and associated documentation files (the "Software"), to deal
|
8 | 83f64091 | bellard | * in the Software without restriction, including without limitation the rights
|
9 | 83f64091 | bellard | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
10 | 83f64091 | bellard | * copies of the Software, and to permit persons to whom the Software is
|
11 | 83f64091 | bellard | * furnished to do so, subject to the following conditions:
|
12 | 83f64091 | bellard | *
|
13 | 83f64091 | bellard | * The above copyright notice and this permission notice shall be included in
|
14 | 83f64091 | bellard | * all copies or substantial portions of the Software.
|
15 | 83f64091 | bellard | *
|
16 | 83f64091 | bellard | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
17 | 83f64091 | bellard | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
18 | 83f64091 | bellard | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
19 | 83f64091 | bellard | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
20 | 83f64091 | bellard | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
21 | 83f64091 | bellard | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
22 | 83f64091 | bellard | * THE SOFTWARE.
|
23 | 83f64091 | bellard | */
|
24 | 83f64091 | bellard | #include "vl.h" |
25 | 83f64091 | bellard | #include "block_int.h" |
26 | 83f64091 | bellard | #include <assert.h> |
27 | 83f64091 | bellard | #ifndef _WIN32
|
28 | 83f64091 | bellard | #include <aio.h> |
29 | 83f64091 | bellard | |
30 | 83f64091 | bellard | #ifndef QEMU_TOOL
|
31 | 83f64091 | bellard | #include "exec-all.h" |
32 | 83f64091 | bellard | #endif
|
33 | 83f64091 | bellard | |
34 | 83f64091 | bellard | #ifdef CONFIG_COCOA
|
35 | 83f64091 | bellard | #include <paths.h> |
36 | 83f64091 | bellard | #include <sys/param.h> |
37 | 83f64091 | bellard | #include <IOKit/IOKitLib.h> |
38 | 83f64091 | bellard | #include <IOKit/IOBSD.h> |
39 | 83f64091 | bellard | #include <IOKit/storage/IOMediaBSDClient.h> |
40 | 83f64091 | bellard | #include <IOKit/storage/IOMedia.h> |
41 | 83f64091 | bellard | #include <IOKit/storage/IOCDMedia.h> |
42 | 83f64091 | bellard | //#include <IOKit/storage/IOCDTypes.h>
|
43 | 83f64091 | bellard | #include <CoreFoundation/CoreFoundation.h> |
44 | 83f64091 | bellard | #endif
|
45 | 83f64091 | bellard | |
46 | 83f64091 | bellard | #ifdef __sun__
|
47 | 83f64091 | bellard | #include <sys/dkio.h> |
48 | 83f64091 | bellard | #endif
|
49 | 19cb3738 | bellard | #ifdef __linux__
|
50 | 19cb3738 | bellard | #include <sys/ioctl.h> |
51 | 19cb3738 | bellard | #include <linux/cdrom.h> |
52 | 19cb3738 | bellard | #include <linux/fd.h> |
53 | 19cb3738 | bellard | #endif
|
54 | 83f64091 | bellard | |
55 | 19cb3738 | bellard | //#define DEBUG_FLOPPY
|
56 | 83f64091 | bellard | |
57 | 19cb3738 | bellard | #define FTYPE_FILE 0 |
58 | 19cb3738 | bellard | #define FTYPE_CD 1 |
59 | 19cb3738 | bellard | #define FTYPE_FD 2 |
60 | 83f64091 | bellard | |
61 | 19cb3738 | bellard | /* if the FD is not accessed during that time (in ms), we try to
|
62 | 19cb3738 | bellard | reopen it to see if the disk has been changed */
|
63 | 19cb3738 | bellard | #define FD_OPEN_TIMEOUT 1000 |
64 | 83f64091 | bellard | |
65 | 19cb3738 | bellard | typedef struct BDRVRawState { |
66 | 19cb3738 | bellard | int fd;
|
67 | 19cb3738 | bellard | int type;
|
68 | 19cb3738 | bellard | #if defined(__linux__)
|
69 | 19cb3738 | bellard | /* linux floppy specific */
|
70 | 19cb3738 | bellard | int fd_open_flags;
|
71 | 19cb3738 | bellard | int64_t fd_open_time; |
72 | 19cb3738 | bellard | int64_t fd_error_time; |
73 | 19cb3738 | bellard | int fd_got_error;
|
74 | 19cb3738 | bellard | int fd_media_changed;
|
75 | 83f64091 | bellard | #endif
|
76 | 19cb3738 | bellard | } BDRVRawState; |
77 | 19cb3738 | bellard | |
78 | 19cb3738 | bellard | static int fd_open(BlockDriverState *bs); |
79 | 83f64091 | bellard | |
80 | 83f64091 | bellard | static int raw_open(BlockDriverState *bs, const char *filename, int flags) |
81 | 83f64091 | bellard | { |
82 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
83 | 19cb3738 | bellard | int fd, open_flags, ret;
|
84 | 83f64091 | bellard | |
85 | 83f64091 | bellard | open_flags = O_BINARY; |
86 | 83f64091 | bellard | if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
87 | 83f64091 | bellard | open_flags |= O_RDWR; |
88 | 83f64091 | bellard | } else {
|
89 | 83f64091 | bellard | open_flags |= O_RDONLY; |
90 | 83f64091 | bellard | bs->read_only = 1;
|
91 | 83f64091 | bellard | } |
92 | 83f64091 | bellard | if (flags & BDRV_O_CREAT)
|
93 | 83f64091 | bellard | open_flags |= O_CREAT | O_TRUNC; |
94 | 83f64091 | bellard | |
95 | 19cb3738 | bellard | s->type = FTYPE_FILE; |
96 | 19cb3738 | bellard | |
97 | 83f64091 | bellard | fd = open(filename, open_flags, 0644);
|
98 | 19cb3738 | bellard | if (fd < 0) { |
99 | 19cb3738 | bellard | ret = -errno; |
100 | 19cb3738 | bellard | if (ret == -EROFS)
|
101 | 19cb3738 | bellard | ret = -EACCES; |
102 | 19cb3738 | bellard | return ret;
|
103 | 19cb3738 | bellard | } |
104 | 83f64091 | bellard | s->fd = fd; |
105 | 83f64091 | bellard | return 0; |
106 | 83f64091 | bellard | } |
107 | 83f64091 | bellard | |
108 | 83f64091 | bellard | /* XXX: use host sector size if necessary with:
|
109 | 83f64091 | bellard | #ifdef DIOCGSECTORSIZE
|
110 | 83f64091 | bellard | {
|
111 | 83f64091 | bellard | unsigned int sectorsize = 512;
|
112 | 83f64091 | bellard | if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) &&
|
113 | 83f64091 | bellard | sectorsize > bufsize)
|
114 | 83f64091 | bellard | bufsize = sectorsize;
|
115 | 83f64091 | bellard | }
|
116 | 83f64091 | bellard | #endif
|
117 | 83f64091 | bellard | #ifdef CONFIG_COCOA
|
118 | 83f64091 | bellard | u_int32_t blockSize = 512;
|
119 | 83f64091 | bellard | if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) {
|
120 | 83f64091 | bellard | bufsize = blockSize;
|
121 | 83f64091 | bellard | }
|
122 | 83f64091 | bellard | #endif
|
123 | 83f64091 | bellard | */
|
124 | 83f64091 | bellard | |
125 | 83f64091 | bellard | static int raw_pread(BlockDriverState *bs, int64_t offset, |
126 | 83f64091 | bellard | uint8_t *buf, int count)
|
127 | 83f64091 | bellard | { |
128 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
129 | 83f64091 | bellard | int ret;
|
130 | 83f64091 | bellard | |
131 | 19cb3738 | bellard | ret = fd_open(bs); |
132 | 19cb3738 | bellard | if (ret < 0) |
133 | 19cb3738 | bellard | return ret;
|
134 | 19cb3738 | bellard | |
135 | 83f64091 | bellard | lseek(s->fd, offset, SEEK_SET); |
136 | 83f64091 | bellard | ret = read(s->fd, buf, count); |
137 | 83f64091 | bellard | return ret;
|
138 | 83f64091 | bellard | } |
139 | 83f64091 | bellard | |
140 | 83f64091 | bellard | static int raw_pwrite(BlockDriverState *bs, int64_t offset, |
141 | 83f64091 | bellard | const uint8_t *buf, int count) |
142 | 83f64091 | bellard | { |
143 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
144 | 83f64091 | bellard | int ret;
|
145 | 83f64091 | bellard | |
146 | 19cb3738 | bellard | ret = fd_open(bs); |
147 | 19cb3738 | bellard | if (ret < 0) |
148 | 19cb3738 | bellard | return ret;
|
149 | 19cb3738 | bellard | |
150 | 83f64091 | bellard | lseek(s->fd, offset, SEEK_SET); |
151 | 83f64091 | bellard | ret = write(s->fd, buf, count); |
152 | 83f64091 | bellard | return ret;
|
153 | 83f64091 | bellard | } |
154 | 83f64091 | bellard | |
155 | 83f64091 | bellard | /***********************************************************/
|
156 | 19cb3738 | bellard | /* Unix AIO using POSIX AIO */
|
157 | 83f64091 | bellard | |
158 | 83f64091 | bellard | typedef struct RawAIOCB { |
159 | ce1a14dc | pbrook | BlockDriverAIOCB common; |
160 | 83f64091 | bellard | struct aiocb aiocb;
|
161 | ce1a14dc | pbrook | struct RawAIOCB *next;
|
162 | 83f64091 | bellard | } RawAIOCB; |
163 | 83f64091 | bellard | |
164 | 83f64091 | bellard | static int aio_sig_num = SIGUSR2; |
165 | ce1a14dc | pbrook | static RawAIOCB *first_aio; /* AIO issued */ |
166 | 979b67ad | bellard | static int aio_initialized = 0; |
167 | 83f64091 | bellard | |
168 | 83f64091 | bellard | static void aio_signal_handler(int signum) |
169 | 83f64091 | bellard | { |
170 | 979b67ad | bellard | #ifndef QEMU_TOOL
|
171 | 83f64091 | bellard | CPUState *env = cpu_single_env; |
172 | 83f64091 | bellard | if (env) {
|
173 | 83f64091 | bellard | /* stop the currently executing cpu because a timer occured */
|
174 | 83f64091 | bellard | cpu_interrupt(env, CPU_INTERRUPT_EXIT); |
175 | 83f64091 | bellard | #ifdef USE_KQEMU
|
176 | 83f64091 | bellard | if (env->kqemu_enabled) {
|
177 | 83f64091 | bellard | kqemu_cpu_interrupt(env); |
178 | 83f64091 | bellard | } |
179 | 83f64091 | bellard | #endif
|
180 | 83f64091 | bellard | } |
181 | 979b67ad | bellard | #endif
|
182 | 83f64091 | bellard | } |
183 | 83f64091 | bellard | |
184 | 83f64091 | bellard | void qemu_aio_init(void) |
185 | 83f64091 | bellard | { |
186 | 83f64091 | bellard | struct sigaction act;
|
187 | 979b67ad | bellard | |
188 | 979b67ad | bellard | aio_initialized = 1;
|
189 | 83f64091 | bellard | |
190 | 83f64091 | bellard | sigfillset(&act.sa_mask); |
191 | 83f64091 | bellard | act.sa_flags = 0; /* do not restart syscalls to interrupt select() */ |
192 | 83f64091 | bellard | act.sa_handler = aio_signal_handler; |
193 | 83f64091 | bellard | sigaction(aio_sig_num, &act, NULL);
|
194 | 83f64091 | bellard | |
195 | 19cb3738 | bellard | #if defined(__GLIBC__) && defined(__linux__)
|
196 | 83f64091 | bellard | { |
197 | 19cb3738 | bellard | /* XXX: aio thread exit seems to hang on RedHat 9 and this init
|
198 | 19cb3738 | bellard | seems to fix the problem. */
|
199 | 83f64091 | bellard | struct aioinit ai;
|
200 | 83f64091 | bellard | memset(&ai, 0, sizeof(ai)); |
201 | 19cb3738 | bellard | ai.aio_threads = 1;
|
202 | 83f64091 | bellard | ai.aio_num = 1;
|
203 | 83f64091 | bellard | ai.aio_idle_time = 365 * 100000; |
204 | 83f64091 | bellard | aio_init(&ai); |
205 | 83f64091 | bellard | } |
206 | 19cb3738 | bellard | #endif
|
207 | 83f64091 | bellard | } |
208 | 83f64091 | bellard | |
209 | 83f64091 | bellard | void qemu_aio_poll(void) |
210 | 83f64091 | bellard | { |
211 | ce1a14dc | pbrook | RawAIOCB *acb, **pacb; |
212 | 83f64091 | bellard | int ret;
|
213 | 83f64091 | bellard | |
214 | 83f64091 | bellard | for(;;) {
|
215 | 83f64091 | bellard | pacb = &first_aio; |
216 | 83f64091 | bellard | for(;;) {
|
217 | 83f64091 | bellard | acb = *pacb; |
218 | 83f64091 | bellard | if (!acb)
|
219 | 83f64091 | bellard | goto the_end;
|
220 | ce1a14dc | pbrook | ret = aio_error(&acb->aiocb); |
221 | 83f64091 | bellard | if (ret == ECANCELED) {
|
222 | 83f64091 | bellard | /* remove the request */
|
223 | ce1a14dc | pbrook | *pacb = acb->next; |
224 | ce1a14dc | pbrook | qemu_aio_release(acb); |
225 | 83f64091 | bellard | } else if (ret != EINPROGRESS) { |
226 | 83f64091 | bellard | /* end of aio */
|
227 | 83f64091 | bellard | if (ret == 0) { |
228 | ce1a14dc | pbrook | ret = aio_return(&acb->aiocb); |
229 | ce1a14dc | pbrook | if (ret == acb->aiocb.aio_nbytes)
|
230 | 83f64091 | bellard | ret = 0;
|
231 | 83f64091 | bellard | else
|
232 | 19cb3738 | bellard | ret = -EINVAL; |
233 | 83f64091 | bellard | } else {
|
234 | 83f64091 | bellard | ret = -ret; |
235 | 83f64091 | bellard | } |
236 | 83f64091 | bellard | /* remove the request */
|
237 | ce1a14dc | pbrook | *pacb = acb->next; |
238 | 83f64091 | bellard | /* call the callback */
|
239 | ce1a14dc | pbrook | acb->common.cb(acb->common.opaque, ret); |
240 | ce1a14dc | pbrook | qemu_aio_release(acb); |
241 | 83f64091 | bellard | break;
|
242 | 83f64091 | bellard | } else {
|
243 | ce1a14dc | pbrook | pacb = &acb->next; |
244 | 83f64091 | bellard | } |
245 | 83f64091 | bellard | } |
246 | 83f64091 | bellard | } |
247 | 83f64091 | bellard | the_end: ;
|
248 | 83f64091 | bellard | } |
249 | 83f64091 | bellard | |
250 | 6192bc37 | pbrook | /* Wait for all IO requests to complete. */
|
251 | 6192bc37 | pbrook | void qemu_aio_flush(void) |
252 | 6192bc37 | pbrook | { |
253 | 6192bc37 | pbrook | qemu_aio_wait_start(); |
254 | 6192bc37 | pbrook | qemu_aio_poll(); |
255 | 6192bc37 | pbrook | while (first_aio) {
|
256 | 6192bc37 | pbrook | qemu_aio_wait(); |
257 | 6192bc37 | pbrook | } |
258 | 6192bc37 | pbrook | qemu_aio_wait_end(); |
259 | 6192bc37 | pbrook | } |
260 | 6192bc37 | pbrook | |
261 | 83f64091 | bellard | /* wait until at least one AIO was handled */
|
262 | 83f64091 | bellard | static sigset_t wait_oset;
|
263 | 83f64091 | bellard | |
264 | 83f64091 | bellard | void qemu_aio_wait_start(void) |
265 | 83f64091 | bellard | { |
266 | 83f64091 | bellard | sigset_t set; |
267 | 979b67ad | bellard | |
268 | 979b67ad | bellard | if (!aio_initialized)
|
269 | 979b67ad | bellard | qemu_aio_init(); |
270 | 83f64091 | bellard | sigemptyset(&set); |
271 | 83f64091 | bellard | sigaddset(&set, aio_sig_num); |
272 | 83f64091 | bellard | sigprocmask(SIG_BLOCK, &set, &wait_oset); |
273 | 83f64091 | bellard | } |
274 | 83f64091 | bellard | |
275 | 83f64091 | bellard | void qemu_aio_wait(void) |
276 | 83f64091 | bellard | { |
277 | 83f64091 | bellard | sigset_t set; |
278 | 83f64091 | bellard | int nb_sigs;
|
279 | 6eb5733a | bellard | |
280 | 6eb5733a | bellard | #ifndef QEMU_TOOL
|
281 | 6eb5733a | bellard | if (qemu_bh_poll())
|
282 | 6eb5733a | bellard | return;
|
283 | 6eb5733a | bellard | #endif
|
284 | 83f64091 | bellard | sigemptyset(&set); |
285 | 83f64091 | bellard | sigaddset(&set, aio_sig_num); |
286 | 83f64091 | bellard | sigwait(&set, &nb_sigs); |
287 | 83f64091 | bellard | qemu_aio_poll(); |
288 | 83f64091 | bellard | } |
289 | 83f64091 | bellard | |
290 | 83f64091 | bellard | void qemu_aio_wait_end(void) |
291 | 83f64091 | bellard | { |
292 | 83f64091 | bellard | sigprocmask(SIG_SETMASK, &wait_oset, NULL);
|
293 | 83f64091 | bellard | } |
294 | 83f64091 | bellard | |
295 | ce1a14dc | pbrook | static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
|
296 | ce1a14dc | pbrook | int64_t sector_num, uint8_t *buf, int nb_sectors,
|
297 | ce1a14dc | pbrook | BlockDriverCompletionFunc *cb, void *opaque)
|
298 | 83f64091 | bellard | { |
299 | ce1a14dc | pbrook | BDRVRawState *s = bs->opaque; |
300 | ce1a14dc | pbrook | RawAIOCB *acb; |
301 | ce1a14dc | pbrook | |
302 | 19cb3738 | bellard | if (fd_open(bs) < 0) |
303 | 19cb3738 | bellard | return NULL; |
304 | 19cb3738 | bellard | |
305 | ce1a14dc | pbrook | acb = qemu_aio_get(bs, cb, opaque); |
306 | ce1a14dc | pbrook | if (!acb)
|
307 | ce1a14dc | pbrook | return NULL; |
308 | ce1a14dc | pbrook | acb->aiocb.aio_fildes = s->fd; |
309 | ce1a14dc | pbrook | acb->aiocb.aio_sigevent.sigev_signo = aio_sig_num; |
310 | ce1a14dc | pbrook | acb->aiocb.aio_sigevent.sigev_notify = SIGEV_SIGNAL; |
311 | ce1a14dc | pbrook | acb->aiocb.aio_buf = buf; |
312 | ce1a14dc | pbrook | acb->aiocb.aio_nbytes = nb_sectors * 512;
|
313 | ce1a14dc | pbrook | acb->aiocb.aio_offset = sector_num * 512;
|
314 | ce1a14dc | pbrook | acb->next = first_aio; |
315 | ce1a14dc | pbrook | first_aio = acb; |
316 | ce1a14dc | pbrook | return acb;
|
317 | 83f64091 | bellard | } |
318 | 83f64091 | bellard | |
319 | ce1a14dc | pbrook | static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
|
320 | ce1a14dc | pbrook | int64_t sector_num, uint8_t *buf, int nb_sectors,
|
321 | ce1a14dc | pbrook | BlockDriverCompletionFunc *cb, void *opaque)
|
322 | 83f64091 | bellard | { |
323 | ce1a14dc | pbrook | RawAIOCB *acb; |
324 | 83f64091 | bellard | |
325 | ce1a14dc | pbrook | acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
326 | ce1a14dc | pbrook | if (!acb)
|
327 | ce1a14dc | pbrook | return NULL; |
328 | ce1a14dc | pbrook | if (aio_read(&acb->aiocb) < 0) { |
329 | ce1a14dc | pbrook | qemu_aio_release(acb); |
330 | ce1a14dc | pbrook | return NULL; |
331 | 83f64091 | bellard | } |
332 | ce1a14dc | pbrook | return &acb->common;
|
333 | 83f64091 | bellard | } |
334 | 83f64091 | bellard | |
335 | ce1a14dc | pbrook | static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
|
336 | ce1a14dc | pbrook | int64_t sector_num, const uint8_t *buf, int nb_sectors, |
337 | ce1a14dc | pbrook | BlockDriverCompletionFunc *cb, void *opaque)
|
338 | 83f64091 | bellard | { |
339 | ce1a14dc | pbrook | RawAIOCB *acb; |
340 | 83f64091 | bellard | |
341 | ce1a14dc | pbrook | acb = raw_aio_setup(bs, sector_num, (uint8_t*)buf, nb_sectors, cb, opaque); |
342 | ce1a14dc | pbrook | if (!acb)
|
343 | ce1a14dc | pbrook | return NULL; |
344 | ce1a14dc | pbrook | if (aio_write(&acb->aiocb) < 0) { |
345 | ce1a14dc | pbrook | qemu_aio_release(acb); |
346 | ce1a14dc | pbrook | return NULL; |
347 | 83f64091 | bellard | } |
348 | ce1a14dc | pbrook | return &acb->common;
|
349 | 83f64091 | bellard | } |
350 | 83f64091 | bellard | |
351 | ce1a14dc | pbrook | static void raw_aio_cancel(BlockDriverAIOCB *blockacb) |
352 | 83f64091 | bellard | { |
353 | 83f64091 | bellard | int ret;
|
354 | ce1a14dc | pbrook | RawAIOCB *acb = (RawAIOCB *)blockacb; |
355 | ce1a14dc | pbrook | RawAIOCB **pacb; |
356 | 83f64091 | bellard | |
357 | ce1a14dc | pbrook | ret = aio_cancel(acb->aiocb.aio_fildes, &acb->aiocb); |
358 | 83f64091 | bellard | if (ret == AIO_NOTCANCELED) {
|
359 | 83f64091 | bellard | /* fail safe: if the aio could not be canceled, we wait for
|
360 | 83f64091 | bellard | it */
|
361 | ce1a14dc | pbrook | while (aio_error(&acb->aiocb) == EINPROGRESS);
|
362 | 83f64091 | bellard | } |
363 | 83f64091 | bellard | |
364 | 83f64091 | bellard | /* remove the callback from the queue */
|
365 | 83f64091 | bellard | pacb = &first_aio; |
366 | 83f64091 | bellard | for(;;) {
|
367 | 83f64091 | bellard | if (*pacb == NULL) { |
368 | 83f64091 | bellard | break;
|
369 | 83f64091 | bellard | } else if (*pacb == acb) { |
370 | ce1a14dc | pbrook | *pacb = acb->next; |
371 | ce1a14dc | pbrook | qemu_aio_release(acb); |
372 | 83f64091 | bellard | break;
|
373 | 83f64091 | bellard | } |
374 | ce1a14dc | pbrook | pacb = &acb->next; |
375 | 83f64091 | bellard | } |
376 | 83f64091 | bellard | } |
377 | 83f64091 | bellard | |
378 | 83f64091 | bellard | static void raw_close(BlockDriverState *bs) |
379 | 83f64091 | bellard | { |
380 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
381 | 19cb3738 | bellard | if (s->fd >= 0) { |
382 | 19cb3738 | bellard | close(s->fd); |
383 | 19cb3738 | bellard | s->fd = -1;
|
384 | 19cb3738 | bellard | } |
385 | 83f64091 | bellard | } |
386 | 83f64091 | bellard | |
387 | 83f64091 | bellard | static int raw_truncate(BlockDriverState *bs, int64_t offset) |
388 | 83f64091 | bellard | { |
389 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
390 | 19cb3738 | bellard | if (s->type != FTYPE_FILE)
|
391 | 19cb3738 | bellard | return -ENOTSUP;
|
392 | 83f64091 | bellard | if (ftruncate(s->fd, offset) < 0) |
393 | 83f64091 | bellard | return -errno;
|
394 | 83f64091 | bellard | return 0; |
395 | 83f64091 | bellard | } |
396 | 83f64091 | bellard | |
397 | 83f64091 | bellard | static int64_t raw_getlength(BlockDriverState *bs)
|
398 | 83f64091 | bellard | { |
399 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
400 | 83f64091 | bellard | int fd = s->fd;
|
401 | 83f64091 | bellard | int64_t size; |
402 | 83f64091 | bellard | #ifdef _BSD
|
403 | 83f64091 | bellard | struct stat sb;
|
404 | 83f64091 | bellard | #endif
|
405 | 83f64091 | bellard | #ifdef __sun__
|
406 | 83f64091 | bellard | struct dk_minfo minfo;
|
407 | 83f64091 | bellard | int rv;
|
408 | 83f64091 | bellard | #endif
|
409 | 19cb3738 | bellard | int ret;
|
410 | 19cb3738 | bellard | |
411 | 19cb3738 | bellard | ret = fd_open(bs); |
412 | 19cb3738 | bellard | if (ret < 0) |
413 | 19cb3738 | bellard | return ret;
|
414 | 83f64091 | bellard | |
415 | 83f64091 | bellard | #ifdef _BSD
|
416 | 83f64091 | bellard | if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
|
417 | 83f64091 | bellard | #ifdef DIOCGMEDIASIZE
|
418 | 83f64091 | bellard | if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
|
419 | 83f64091 | bellard | #endif
|
420 | 83f64091 | bellard | #ifdef CONFIG_COCOA
|
421 | 83f64091 | bellard | size = LONG_LONG_MAX; |
422 | 83f64091 | bellard | #else
|
423 | 83f64091 | bellard | size = lseek(fd, 0LL, SEEK_END);
|
424 | 83f64091 | bellard | #endif
|
425 | 83f64091 | bellard | } else
|
426 | 83f64091 | bellard | #endif
|
427 | 83f64091 | bellard | #ifdef __sun__
|
428 | 83f64091 | bellard | /*
|
429 | 83f64091 | bellard | * use the DKIOCGMEDIAINFO ioctl to read the size.
|
430 | 83f64091 | bellard | */
|
431 | 83f64091 | bellard | rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo ); |
432 | 83f64091 | bellard | if ( rv != -1 ) { |
433 | 83f64091 | bellard | size = minfo.dki_lbsize * minfo.dki_capacity; |
434 | 83f64091 | bellard | } else /* there are reports that lseek on some devices |
435 | 83f64091 | bellard | fails, but irc discussion said that contingency
|
436 | 83f64091 | bellard | on contingency was overkill */
|
437 | 83f64091 | bellard | #endif
|
438 | 83f64091 | bellard | { |
439 | 83f64091 | bellard | size = lseek(fd, 0, SEEK_END);
|
440 | 83f64091 | bellard | } |
441 | 83f64091 | bellard | return size;
|
442 | 83f64091 | bellard | } |
443 | 83f64091 | bellard | |
444 | 83f64091 | bellard | static int raw_create(const char *filename, int64_t total_size, |
445 | 83f64091 | bellard | const char *backing_file, int flags) |
446 | 83f64091 | bellard | { |
447 | 83f64091 | bellard | int fd;
|
448 | 83f64091 | bellard | |
449 | 83f64091 | bellard | if (flags || backing_file)
|
450 | 83f64091 | bellard | return -ENOTSUP;
|
451 | 83f64091 | bellard | |
452 | 9ab8a34a | bellard | fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
453 | 83f64091 | bellard | 0644);
|
454 | 83f64091 | bellard | if (fd < 0) |
455 | 83f64091 | bellard | return -EIO;
|
456 | 83f64091 | bellard | ftruncate(fd, total_size * 512);
|
457 | 83f64091 | bellard | close(fd); |
458 | 83f64091 | bellard | return 0; |
459 | 83f64091 | bellard | } |
460 | 83f64091 | bellard | |
461 | 83f64091 | bellard | static void raw_flush(BlockDriverState *bs) |
462 | 83f64091 | bellard | { |
463 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
464 | 83f64091 | bellard | fsync(s->fd); |
465 | 83f64091 | bellard | } |
466 | 83f64091 | bellard | |
467 | 83f64091 | bellard | BlockDriver bdrv_raw = { |
468 | 83f64091 | bellard | "raw",
|
469 | 83f64091 | bellard | sizeof(BDRVRawState),
|
470 | 83f64091 | bellard | NULL, /* no probe for protocols */ |
471 | 83f64091 | bellard | raw_open, |
472 | 83f64091 | bellard | NULL,
|
473 | 83f64091 | bellard | NULL,
|
474 | 83f64091 | bellard | raw_close, |
475 | 83f64091 | bellard | raw_create, |
476 | 83f64091 | bellard | raw_flush, |
477 | 83f64091 | bellard | |
478 | 83f64091 | bellard | .bdrv_aio_read = raw_aio_read, |
479 | 83f64091 | bellard | .bdrv_aio_write = raw_aio_write, |
480 | 83f64091 | bellard | .bdrv_aio_cancel = raw_aio_cancel, |
481 | ce1a14dc | pbrook | .aiocb_size = sizeof(RawAIOCB),
|
482 | 83f64091 | bellard | .protocol_name = "file",
|
483 | 83f64091 | bellard | .bdrv_pread = raw_pread, |
484 | 83f64091 | bellard | .bdrv_pwrite = raw_pwrite, |
485 | 83f64091 | bellard | .bdrv_truncate = raw_truncate, |
486 | 83f64091 | bellard | .bdrv_getlength = raw_getlength, |
487 | 83f64091 | bellard | }; |
488 | 83f64091 | bellard | |
489 | 19cb3738 | bellard | /***********************************************/
|
490 | 19cb3738 | bellard | /* host device */
|
491 | 19cb3738 | bellard | |
492 | 19cb3738 | bellard | #ifdef CONFIG_COCOA
|
493 | 19cb3738 | bellard | static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator );
|
494 | 19cb3738 | bellard | static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ); |
495 | 19cb3738 | bellard | |
496 | 19cb3738 | bellard | kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ) |
497 | 19cb3738 | bellard | { |
498 | 19cb3738 | bellard | kern_return_t kernResult; |
499 | 19cb3738 | bellard | mach_port_t masterPort; |
500 | 19cb3738 | bellard | CFMutableDictionaryRef classesToMatch; |
501 | 19cb3738 | bellard | |
502 | 19cb3738 | bellard | kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort ); |
503 | 19cb3738 | bellard | if ( KERN_SUCCESS != kernResult ) {
|
504 | 19cb3738 | bellard | printf( "IOMasterPort returned %d\n", kernResult );
|
505 | 19cb3738 | bellard | } |
506 | 19cb3738 | bellard | |
507 | 19cb3738 | bellard | classesToMatch = IOServiceMatching( kIOCDMediaClass ); |
508 | 19cb3738 | bellard | if ( classesToMatch == NULL ) { |
509 | 19cb3738 | bellard | printf( "IOServiceMatching returned a NULL dictionary.\n" );
|
510 | 19cb3738 | bellard | } else {
|
511 | 19cb3738 | bellard | CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue ); |
512 | 19cb3738 | bellard | } |
513 | 19cb3738 | bellard | kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator ); |
514 | 19cb3738 | bellard | if ( KERN_SUCCESS != kernResult )
|
515 | 19cb3738 | bellard | { |
516 | 19cb3738 | bellard | printf( "IOServiceGetMatchingServices returned %d\n", kernResult );
|
517 | 19cb3738 | bellard | } |
518 | 19cb3738 | bellard | |
519 | 19cb3738 | bellard | return kernResult;
|
520 | 19cb3738 | bellard | } |
521 | 19cb3738 | bellard | |
522 | 19cb3738 | bellard | kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize )
|
523 | 19cb3738 | bellard | { |
524 | 19cb3738 | bellard | io_object_t nextMedia; |
525 | 19cb3738 | bellard | kern_return_t kernResult = KERN_FAILURE; |
526 | 19cb3738 | bellard | *bsdPath = '\0';
|
527 | 19cb3738 | bellard | nextMedia = IOIteratorNext( mediaIterator ); |
528 | 19cb3738 | bellard | if ( nextMedia )
|
529 | 19cb3738 | bellard | { |
530 | 19cb3738 | bellard | CFTypeRef bsdPathAsCFString; |
531 | 19cb3738 | bellard | bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 );
|
532 | 19cb3738 | bellard | if ( bsdPathAsCFString ) {
|
533 | 19cb3738 | bellard | size_t devPathLength; |
534 | 19cb3738 | bellard | strcpy( bsdPath, _PATH_DEV ); |
535 | 19cb3738 | bellard | strcat( bsdPath, "r" );
|
536 | 19cb3738 | bellard | devPathLength = strlen( bsdPath ); |
537 | 19cb3738 | bellard | if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) {
|
538 | 19cb3738 | bellard | kernResult = KERN_SUCCESS; |
539 | 19cb3738 | bellard | } |
540 | 19cb3738 | bellard | CFRelease( bsdPathAsCFString ); |
541 | 19cb3738 | bellard | } |
542 | 19cb3738 | bellard | IOObjectRelease( nextMedia ); |
543 | 19cb3738 | bellard | } |
544 | 19cb3738 | bellard | |
545 | 19cb3738 | bellard | return kernResult;
|
546 | 19cb3738 | bellard | } |
547 | 19cb3738 | bellard | |
548 | 19cb3738 | bellard | #endif
|
549 | 19cb3738 | bellard | |
550 | 19cb3738 | bellard | static int hdev_open(BlockDriverState *bs, const char *filename, int flags) |
551 | 19cb3738 | bellard | { |
552 | 19cb3738 | bellard | BDRVRawState *s = bs->opaque; |
553 | 19cb3738 | bellard | int fd, open_flags, ret;
|
554 | 19cb3738 | bellard | |
555 | 19cb3738 | bellard | #ifdef CONFIG_COCOA
|
556 | 19cb3738 | bellard | if (strstart(filename, "/dev/cdrom", NULL)) { |
557 | 19cb3738 | bellard | kern_return_t kernResult; |
558 | 19cb3738 | bellard | io_iterator_t mediaIterator; |
559 | 19cb3738 | bellard | char bsdPath[ MAXPATHLEN ];
|
560 | 19cb3738 | bellard | int fd;
|
561 | 19cb3738 | bellard | |
562 | 19cb3738 | bellard | kernResult = FindEjectableCDMedia( &mediaIterator ); |
563 | 19cb3738 | bellard | kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) );
|
564 | 19cb3738 | bellard | |
565 | 19cb3738 | bellard | if ( bsdPath[ 0 ] != '\0' ) { |
566 | 19cb3738 | bellard | strcat(bsdPath,"s0");
|
567 | 19cb3738 | bellard | /* some CDs don't have a partition 0 */
|
568 | 19cb3738 | bellard | fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE); |
569 | 19cb3738 | bellard | if (fd < 0) { |
570 | 19cb3738 | bellard | bsdPath[strlen(bsdPath)-1] = '1'; |
571 | 19cb3738 | bellard | } else {
|
572 | 19cb3738 | bellard | close(fd); |
573 | 19cb3738 | bellard | } |
574 | 19cb3738 | bellard | filename = bsdPath; |
575 | 19cb3738 | bellard | } |
576 | 19cb3738 | bellard | |
577 | 19cb3738 | bellard | if ( mediaIterator )
|
578 | 19cb3738 | bellard | IOObjectRelease( mediaIterator ); |
579 | 19cb3738 | bellard | } |
580 | 19cb3738 | bellard | #endif
|
581 | 19cb3738 | bellard | open_flags = O_BINARY; |
582 | 19cb3738 | bellard | if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
583 | 19cb3738 | bellard | open_flags |= O_RDWR; |
584 | 19cb3738 | bellard | } else {
|
585 | 19cb3738 | bellard | open_flags |= O_RDONLY; |
586 | 19cb3738 | bellard | bs->read_only = 1;
|
587 | 19cb3738 | bellard | } |
588 | 19cb3738 | bellard | |
589 | 19cb3738 | bellard | s->type = FTYPE_FILE; |
590 | 19cb3738 | bellard | #if defined(__linux__)
|
591 | 19cb3738 | bellard | if (strstart(filename, "/dev/cd", NULL)) { |
592 | 19cb3738 | bellard | /* open will not fail even if no CD is inserted */
|
593 | 19cb3738 | bellard | open_flags |= O_NONBLOCK; |
594 | 19cb3738 | bellard | s->type = FTYPE_CD; |
595 | 19cb3738 | bellard | } else if (strstart(filename, "/dev/fd", NULL)) { |
596 | 19cb3738 | bellard | s->type = FTYPE_FD; |
597 | 19cb3738 | bellard | s->fd_open_flags = open_flags; |
598 | 19cb3738 | bellard | /* open will not fail even if no floppy is inserted */
|
599 | 19cb3738 | bellard | open_flags |= O_NONBLOCK; |
600 | 19cb3738 | bellard | } |
601 | 19cb3738 | bellard | #endif
|
602 | 19cb3738 | bellard | fd = open(filename, open_flags, 0644);
|
603 | 19cb3738 | bellard | if (fd < 0) { |
604 | 19cb3738 | bellard | ret = -errno; |
605 | 19cb3738 | bellard | if (ret == -EROFS)
|
606 | 19cb3738 | bellard | ret = -EACCES; |
607 | 19cb3738 | bellard | return ret;
|
608 | 19cb3738 | bellard | } |
609 | 19cb3738 | bellard | s->fd = fd; |
610 | 19cb3738 | bellard | #if defined(__linux__)
|
611 | 19cb3738 | bellard | /* close fd so that we can reopen it as needed */
|
612 | 19cb3738 | bellard | if (s->type == FTYPE_FD) {
|
613 | 19cb3738 | bellard | close(s->fd); |
614 | 19cb3738 | bellard | s->fd = -1;
|
615 | 19cb3738 | bellard | s->fd_media_changed = 1;
|
616 | 19cb3738 | bellard | } |
617 | 19cb3738 | bellard | #endif
|
618 | 19cb3738 | bellard | return 0; |
619 | 19cb3738 | bellard | } |
620 | 19cb3738 | bellard | |
621 | 19cb3738 | bellard | #if defined(__linux__) && !defined(QEMU_TOOL)
|
622 | 19cb3738 | bellard | |
623 | 19cb3738 | bellard | /* Note: we do not have a reliable method to detect if the floppy is
|
624 | 19cb3738 | bellard | present. The current method is to try to open the floppy at every
|
625 | 19cb3738 | bellard | I/O and to keep it opened during a few hundreds of ms. */
|
626 | 19cb3738 | bellard | static int fd_open(BlockDriverState *bs) |
627 | 19cb3738 | bellard | { |
628 | 19cb3738 | bellard | BDRVRawState *s = bs->opaque; |
629 | 19cb3738 | bellard | int last_media_present;
|
630 | 19cb3738 | bellard | |
631 | 19cb3738 | bellard | if (s->type != FTYPE_FD)
|
632 | 19cb3738 | bellard | return 0; |
633 | 19cb3738 | bellard | last_media_present = (s->fd >= 0);
|
634 | 19cb3738 | bellard | if (s->fd >= 0 && |
635 | 19cb3738 | bellard | (qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) { |
636 | 19cb3738 | bellard | close(s->fd); |
637 | 19cb3738 | bellard | s->fd = -1;
|
638 | 19cb3738 | bellard | #ifdef DEBUG_FLOPPY
|
639 | 19cb3738 | bellard | printf("Floppy closed\n");
|
640 | 19cb3738 | bellard | #endif
|
641 | 19cb3738 | bellard | } |
642 | 19cb3738 | bellard | if (s->fd < 0) { |
643 | 19cb3738 | bellard | if (s->fd_got_error &&
|
644 | 19cb3738 | bellard | (qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) { |
645 | 19cb3738 | bellard | #ifdef DEBUG_FLOPPY
|
646 | 19cb3738 | bellard | printf("No floppy (open delayed)\n");
|
647 | 19cb3738 | bellard | #endif
|
648 | 19cb3738 | bellard | return -EIO;
|
649 | 19cb3738 | bellard | } |
650 | 19cb3738 | bellard | s->fd = open(bs->filename, s->fd_open_flags); |
651 | 19cb3738 | bellard | if (s->fd < 0) { |
652 | 19cb3738 | bellard | s->fd_error_time = qemu_get_clock(rt_clock); |
653 | 19cb3738 | bellard | s->fd_got_error = 1;
|
654 | 19cb3738 | bellard | if (last_media_present)
|
655 | 19cb3738 | bellard | s->fd_media_changed = 1;
|
656 | 19cb3738 | bellard | #ifdef DEBUG_FLOPPY
|
657 | 19cb3738 | bellard | printf("No floppy\n");
|
658 | 19cb3738 | bellard | #endif
|
659 | 19cb3738 | bellard | return -EIO;
|
660 | 19cb3738 | bellard | } |
661 | 19cb3738 | bellard | #ifdef DEBUG_FLOPPY
|
662 | 19cb3738 | bellard | printf("Floppy opened\n");
|
663 | 19cb3738 | bellard | #endif
|
664 | 19cb3738 | bellard | } |
665 | 19cb3738 | bellard | if (!last_media_present)
|
666 | 19cb3738 | bellard | s->fd_media_changed = 1;
|
667 | 19cb3738 | bellard | s->fd_open_time = qemu_get_clock(rt_clock); |
668 | 19cb3738 | bellard | s->fd_got_error = 0;
|
669 | 19cb3738 | bellard | return 0; |
670 | 19cb3738 | bellard | } |
671 | 19cb3738 | bellard | #else
|
672 | 19cb3738 | bellard | static int fd_open(BlockDriverState *bs) |
673 | 19cb3738 | bellard | { |
674 | 19cb3738 | bellard | return 0; |
675 | 19cb3738 | bellard | } |
676 | 19cb3738 | bellard | #endif
|
677 | 19cb3738 | bellard | |
678 | 19cb3738 | bellard | #if defined(__linux__)
|
679 | 19cb3738 | bellard | |
680 | 19cb3738 | bellard | static int raw_is_inserted(BlockDriverState *bs) |
681 | 19cb3738 | bellard | { |
682 | 19cb3738 | bellard | BDRVRawState *s = bs->opaque; |
683 | 19cb3738 | bellard | int ret;
|
684 | 19cb3738 | bellard | |
685 | 19cb3738 | bellard | switch(s->type) {
|
686 | 19cb3738 | bellard | case FTYPE_CD:
|
687 | 19cb3738 | bellard | ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); |
688 | 19cb3738 | bellard | if (ret == CDS_DISC_OK)
|
689 | 19cb3738 | bellard | return 1; |
690 | 19cb3738 | bellard | else
|
691 | 19cb3738 | bellard | return 0; |
692 | 19cb3738 | bellard | break;
|
693 | 19cb3738 | bellard | case FTYPE_FD:
|
694 | 19cb3738 | bellard | ret = fd_open(bs); |
695 | 19cb3738 | bellard | return (ret >= 0); |
696 | 19cb3738 | bellard | default:
|
697 | 19cb3738 | bellard | return 1; |
698 | 19cb3738 | bellard | } |
699 | 19cb3738 | bellard | } |
700 | 19cb3738 | bellard | |
701 | 19cb3738 | bellard | /* currently only used by fdc.c, but a CD version would be good too */
|
702 | 19cb3738 | bellard | static int raw_media_changed(BlockDriverState *bs) |
703 | 19cb3738 | bellard | { |
704 | 19cb3738 | bellard | BDRVRawState *s = bs->opaque; |
705 | 19cb3738 | bellard | |
706 | 19cb3738 | bellard | switch(s->type) {
|
707 | 19cb3738 | bellard | case FTYPE_FD:
|
708 | 19cb3738 | bellard | { |
709 | 19cb3738 | bellard | int ret;
|
710 | 19cb3738 | bellard | /* XXX: we do not have a true media changed indication. It
|
711 | 19cb3738 | bellard | does not work if the floppy is changed without trying
|
712 | 19cb3738 | bellard | to read it */
|
713 | 19cb3738 | bellard | fd_open(bs); |
714 | 19cb3738 | bellard | ret = s->fd_media_changed; |
715 | 19cb3738 | bellard | s->fd_media_changed = 0;
|
716 | 19cb3738 | bellard | #ifdef DEBUG_FLOPPY
|
717 | 19cb3738 | bellard | printf("Floppy changed=%d\n", ret);
|
718 | 19cb3738 | bellard | #endif
|
719 | 19cb3738 | bellard | return ret;
|
720 | 19cb3738 | bellard | } |
721 | 19cb3738 | bellard | default:
|
722 | 19cb3738 | bellard | return -ENOTSUP;
|
723 | 19cb3738 | bellard | } |
724 | 19cb3738 | bellard | } |
725 | 19cb3738 | bellard | |
726 | 19cb3738 | bellard | static int raw_eject(BlockDriverState *bs, int eject_flag) |
727 | 19cb3738 | bellard | { |
728 | 19cb3738 | bellard | BDRVRawState *s = bs->opaque; |
729 | 19cb3738 | bellard | |
730 | 19cb3738 | bellard | switch(s->type) {
|
731 | 19cb3738 | bellard | case FTYPE_CD:
|
732 | 19cb3738 | bellard | if (eject_flag) {
|
733 | 19cb3738 | bellard | if (ioctl (s->fd, CDROMEJECT, NULL) < 0) |
734 | 19cb3738 | bellard | perror("CDROMEJECT");
|
735 | 19cb3738 | bellard | } else {
|
736 | 19cb3738 | bellard | if (ioctl (s->fd, CDROMCLOSETRAY, NULL) < 0) |
737 | 19cb3738 | bellard | perror("CDROMEJECT");
|
738 | 19cb3738 | bellard | } |
739 | 19cb3738 | bellard | break;
|
740 | 19cb3738 | bellard | case FTYPE_FD:
|
741 | 19cb3738 | bellard | { |
742 | 19cb3738 | bellard | int fd;
|
743 | 19cb3738 | bellard | if (s->fd >= 0) { |
744 | 19cb3738 | bellard | close(s->fd); |
745 | 19cb3738 | bellard | s->fd = -1;
|
746 | 19cb3738 | bellard | } |
747 | 19cb3738 | bellard | fd = open(bs->filename, s->fd_open_flags | O_NONBLOCK); |
748 | 19cb3738 | bellard | if (fd >= 0) { |
749 | 19cb3738 | bellard | if (ioctl(fd, FDEJECT, 0) < 0) |
750 | 19cb3738 | bellard | perror("FDEJECT");
|
751 | 19cb3738 | bellard | close(fd); |
752 | 19cb3738 | bellard | } |
753 | 19cb3738 | bellard | } |
754 | 19cb3738 | bellard | break;
|
755 | 19cb3738 | bellard | default:
|
756 | 19cb3738 | bellard | return -ENOTSUP;
|
757 | 19cb3738 | bellard | } |
758 | 19cb3738 | bellard | return 0; |
759 | 19cb3738 | bellard | } |
760 | 19cb3738 | bellard | |
761 | 19cb3738 | bellard | static int raw_set_locked(BlockDriverState *bs, int locked) |
762 | 19cb3738 | bellard | { |
763 | 19cb3738 | bellard | BDRVRawState *s = bs->opaque; |
764 | 19cb3738 | bellard | |
765 | 19cb3738 | bellard | switch(s->type) {
|
766 | 19cb3738 | bellard | case FTYPE_CD:
|
767 | 19cb3738 | bellard | if (ioctl (s->fd, CDROM_LOCKDOOR, locked) < 0) { |
768 | 19cb3738 | bellard | /* Note: an error can happen if the distribution automatically
|
769 | 19cb3738 | bellard | mounts the CD-ROM */
|
770 | 19cb3738 | bellard | // perror("CDROM_LOCKDOOR");
|
771 | 19cb3738 | bellard | } |
772 | 19cb3738 | bellard | break;
|
773 | 19cb3738 | bellard | default:
|
774 | 19cb3738 | bellard | return -ENOTSUP;
|
775 | 19cb3738 | bellard | } |
776 | 19cb3738 | bellard | return 0; |
777 | 19cb3738 | bellard | } |
778 | 19cb3738 | bellard | |
779 | 19cb3738 | bellard | #else
|
780 | 19cb3738 | bellard | |
781 | 19cb3738 | bellard | static int raw_is_inserted(BlockDriverState *bs) |
782 | 19cb3738 | bellard | { |
783 | 19cb3738 | bellard | return 1; |
784 | 19cb3738 | bellard | } |
785 | 19cb3738 | bellard | |
786 | 19cb3738 | bellard | static int raw_media_changed(BlockDriverState *bs) |
787 | 19cb3738 | bellard | { |
788 | 19cb3738 | bellard | return -ENOTSUP;
|
789 | 19cb3738 | bellard | } |
790 | 19cb3738 | bellard | |
791 | 19cb3738 | bellard | static int raw_eject(BlockDriverState *bs, int eject_flag) |
792 | 19cb3738 | bellard | { |
793 | 19cb3738 | bellard | return -ENOTSUP;
|
794 | 19cb3738 | bellard | } |
795 | 19cb3738 | bellard | |
796 | 19cb3738 | bellard | static int raw_set_locked(BlockDriverState *bs, int locked) |
797 | 19cb3738 | bellard | { |
798 | 19cb3738 | bellard | return -ENOTSUP;
|
799 | 19cb3738 | bellard | } |
800 | 19cb3738 | bellard | |
801 | 19cb3738 | bellard | #endif /* !linux */ |
802 | 19cb3738 | bellard | |
803 | 19cb3738 | bellard | BlockDriver bdrv_host_device = { |
804 | 19cb3738 | bellard | "host_device",
|
805 | 19cb3738 | bellard | sizeof(BDRVRawState),
|
806 | 19cb3738 | bellard | NULL, /* no probe for protocols */ |
807 | 19cb3738 | bellard | hdev_open, |
808 | 19cb3738 | bellard | NULL,
|
809 | 19cb3738 | bellard | NULL,
|
810 | 19cb3738 | bellard | raw_close, |
811 | 19cb3738 | bellard | NULL,
|
812 | 19cb3738 | bellard | raw_flush, |
813 | 19cb3738 | bellard | |
814 | 19cb3738 | bellard | .bdrv_aio_read = raw_aio_read, |
815 | 19cb3738 | bellard | .bdrv_aio_write = raw_aio_write, |
816 | 19cb3738 | bellard | .bdrv_aio_cancel = raw_aio_cancel, |
817 | 19cb3738 | bellard | .aiocb_size = sizeof(RawAIOCB),
|
818 | 19cb3738 | bellard | .bdrv_pread = raw_pread, |
819 | 19cb3738 | bellard | .bdrv_pwrite = raw_pwrite, |
820 | 19cb3738 | bellard | .bdrv_getlength = raw_getlength, |
821 | 19cb3738 | bellard | |
822 | 19cb3738 | bellard | /* removable device support */
|
823 | 19cb3738 | bellard | .bdrv_is_inserted = raw_is_inserted, |
824 | 19cb3738 | bellard | .bdrv_media_changed = raw_media_changed, |
825 | 19cb3738 | bellard | .bdrv_eject = raw_eject, |
826 | 19cb3738 | bellard | .bdrv_set_locked = raw_set_locked, |
827 | 19cb3738 | bellard | }; |
828 | 19cb3738 | bellard | |
829 | 83f64091 | bellard | #else /* _WIN32 */ |
830 | 83f64091 | bellard | |
831 | 83f64091 | bellard | /* XXX: use another file ? */
|
832 | 83f64091 | bellard | #include <winioctl.h> |
833 | 83f64091 | bellard | |
834 | 19cb3738 | bellard | #define FTYPE_FILE 0 |
835 | 19cb3738 | bellard | #define FTYPE_CD 1 |
836 | 19cb3738 | bellard | |
837 | 83f64091 | bellard | typedef struct BDRVRawState { |
838 | 83f64091 | bellard | HANDLE hfile; |
839 | 19cb3738 | bellard | int type;
|
840 | f45512fe | bellard | char drive_path[16]; /* format: "d:\" */ |
841 | 83f64091 | bellard | } BDRVRawState; |
842 | 83f64091 | bellard | |
843 | 83f64091 | bellard | typedef struct RawAIOCB { |
844 | ce1a14dc | pbrook | BlockDriverAIOCB common; |
845 | 83f64091 | bellard | HANDLE hEvent; |
846 | 83f64091 | bellard | OVERLAPPED ov; |
847 | 83f64091 | bellard | int count;
|
848 | 83f64091 | bellard | } RawAIOCB; |
849 | 83f64091 | bellard | |
850 | 83f64091 | bellard | int qemu_ftruncate64(int fd, int64_t length) |
851 | 83f64091 | bellard | { |
852 | 83f64091 | bellard | LARGE_INTEGER li; |
853 | 83f64091 | bellard | LONG high; |
854 | 83f64091 | bellard | HANDLE h; |
855 | 83f64091 | bellard | BOOL res; |
856 | 83f64091 | bellard | |
857 | 83f64091 | bellard | if ((GetVersion() & 0x80000000UL) && (length >> 32) != 0) |
858 | 83f64091 | bellard | return -1; |
859 | 83f64091 | bellard | |
860 | 83f64091 | bellard | h = (HANDLE)_get_osfhandle(fd); |
861 | 83f64091 | bellard | |
862 | 83f64091 | bellard | /* get current position, ftruncate do not change position */
|
863 | 83f64091 | bellard | li.HighPart = 0;
|
864 | 83f64091 | bellard | li.LowPart = SetFilePointer (h, 0, &li.HighPart, FILE_CURRENT);
|
865 | 83f64091 | bellard | if (li.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR) |
866 | 83f64091 | bellard | return -1; |
867 | 83f64091 | bellard | |
868 | 83f64091 | bellard | high = length >> 32;
|
869 | 83f64091 | bellard | if (!SetFilePointer(h, (DWORD) length, &high, FILE_BEGIN))
|
870 | 83f64091 | bellard | return -1; |
871 | 83f64091 | bellard | res = SetEndOfFile(h); |
872 | 83f64091 | bellard | |
873 | 83f64091 | bellard | /* back to old position */
|
874 | 83f64091 | bellard | SetFilePointer(h, li.LowPart, &li.HighPart, FILE_BEGIN); |
875 | 83f64091 | bellard | return res ? 0 : -1; |
876 | 83f64091 | bellard | } |
877 | 83f64091 | bellard | |
878 | 83f64091 | bellard | static int set_sparse(int fd) |
879 | 83f64091 | bellard | { |
880 | 83f64091 | bellard | DWORD returned; |
881 | 83f64091 | bellard | return (int) DeviceIoControl((HANDLE)_get_osfhandle(fd), FSCTL_SET_SPARSE, |
882 | 83f64091 | bellard | NULL, 0, NULL, 0, &returned, NULL); |
883 | 83f64091 | bellard | } |
884 | 83f64091 | bellard | |
885 | 83f64091 | bellard | static int raw_open(BlockDriverState *bs, const char *filename, int flags) |
886 | 83f64091 | bellard | { |
887 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
888 | 83f64091 | bellard | int access_flags, create_flags;
|
889 | ce1a14dc | pbrook | DWORD overlapped; |
890 | 19cb3738 | bellard | |
891 | f45512fe | bellard | s->type = FTYPE_FILE; |
892 | 83f64091 | bellard | |
893 | 83f64091 | bellard | if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
894 | 83f64091 | bellard | access_flags = GENERIC_READ | GENERIC_WRITE; |
895 | 83f64091 | bellard | } else {
|
896 | 83f64091 | bellard | access_flags = GENERIC_READ; |
897 | 83f64091 | bellard | } |
898 | 979b67ad | bellard | if (flags & BDRV_O_CREAT) {
|
899 | 83f64091 | bellard | create_flags = CREATE_ALWAYS; |
900 | 83f64091 | bellard | } else {
|
901 | 83f64091 | bellard | create_flags = OPEN_EXISTING; |
902 | 83f64091 | bellard | } |
903 | ce1a14dc | pbrook | #ifdef QEMU_TOOL
|
904 | ce1a14dc | pbrook | overlapped = 0;
|
905 | ce1a14dc | pbrook | #else
|
906 | ce1a14dc | pbrook | overlapped = FILE_FLAG_OVERLAPPED; |
907 | ce1a14dc | pbrook | #endif
|
908 | 83f64091 | bellard | s->hfile = CreateFile(filename, access_flags, |
909 | 83f64091 | bellard | FILE_SHARE_READ, NULL,
|
910 | ce1a14dc | pbrook | create_flags, overlapped, 0);
|
911 | 83f64091 | bellard | if (s->hfile == INVALID_HANDLE_VALUE)
|
912 | 83f64091 | bellard | return -1; |
913 | 83f64091 | bellard | return 0; |
914 | 83f64091 | bellard | } |
915 | 83f64091 | bellard | |
916 | 83f64091 | bellard | static int raw_pread(BlockDriverState *bs, int64_t offset, |
917 | 83f64091 | bellard | uint8_t *buf, int count)
|
918 | 83f64091 | bellard | { |
919 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
920 | 83f64091 | bellard | OVERLAPPED ov; |
921 | 83f64091 | bellard | DWORD ret_count; |
922 | 83f64091 | bellard | int ret;
|
923 | 83f64091 | bellard | |
924 | 83f64091 | bellard | memset(&ov, 0, sizeof(ov)); |
925 | 83f64091 | bellard | ov.Offset = offset; |
926 | 83f64091 | bellard | ov.OffsetHigh = offset >> 32;
|
927 | 436e15b8 | bellard | ret = ReadFile(s->hfile, buf, count, &ret_count, &ov); |
928 | 436e15b8 | bellard | if (!ret) {
|
929 | 436e15b8 | bellard | ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE); |
930 | 436e15b8 | bellard | if (!ret)
|
931 | 436e15b8 | bellard | return -EIO;
|
932 | 436e15b8 | bellard | else
|
933 | 436e15b8 | bellard | return ret_count;
|
934 | 436e15b8 | bellard | } |
935 | 83f64091 | bellard | return ret_count;
|
936 | 83f64091 | bellard | } |
937 | 83f64091 | bellard | |
938 | 83f64091 | bellard | static int raw_pwrite(BlockDriverState *bs, int64_t offset, |
939 | 83f64091 | bellard | const uint8_t *buf, int count) |
940 | 83f64091 | bellard | { |
941 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
942 | 83f64091 | bellard | OVERLAPPED ov; |
943 | 83f64091 | bellard | DWORD ret_count; |
944 | 83f64091 | bellard | int ret;
|
945 | 83f64091 | bellard | |
946 | 83f64091 | bellard | memset(&ov, 0, sizeof(ov)); |
947 | 83f64091 | bellard | ov.Offset = offset; |
948 | 83f64091 | bellard | ov.OffsetHigh = offset >> 32;
|
949 | 436e15b8 | bellard | ret = WriteFile(s->hfile, buf, count, &ret_count, &ov); |
950 | 436e15b8 | bellard | if (!ret) {
|
951 | 436e15b8 | bellard | ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE); |
952 | 436e15b8 | bellard | if (!ret)
|
953 | 436e15b8 | bellard | return -EIO;
|
954 | 436e15b8 | bellard | else
|
955 | 436e15b8 | bellard | return ret_count;
|
956 | 436e15b8 | bellard | } |
957 | 83f64091 | bellard | return ret_count;
|
958 | 83f64091 | bellard | } |
959 | 83f64091 | bellard | |
960 | 436e15b8 | bellard | #ifndef QEMU_TOOL
|
961 | 83f64091 | bellard | static void raw_aio_cb(void *opaque) |
962 | 83f64091 | bellard | { |
963 | ce1a14dc | pbrook | RawAIOCB *acb = opaque; |
964 | ce1a14dc | pbrook | BlockDriverState *bs = acb->common.bs; |
965 | 979b67ad | bellard | BDRVRawState *s = bs->opaque; |
966 | 83f64091 | bellard | DWORD ret_count; |
967 | 83f64091 | bellard | int ret;
|
968 | 83f64091 | bellard | |
969 | ce1a14dc | pbrook | ret = GetOverlappedResult(s->hfile, &acb->ov, &ret_count, TRUE); |
970 | ce1a14dc | pbrook | if (!ret || ret_count != acb->count) {
|
971 | ce1a14dc | pbrook | acb->common.cb(acb->common.opaque, -EIO); |
972 | 83f64091 | bellard | } else {
|
973 | ce1a14dc | pbrook | acb->common.cb(acb->common.opaque, 0);
|
974 | 83f64091 | bellard | } |
975 | 83f64091 | bellard | } |
976 | 436e15b8 | bellard | #endif
|
977 | ce1a14dc | pbrook | |
978 | ce1a14dc | pbrook | static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
|
979 | ce1a14dc | pbrook | int64_t sector_num, uint8_t *buf, int nb_sectors,
|
980 | ce1a14dc | pbrook | BlockDriverCompletionFunc *cb, void *opaque)
|
981 | 83f64091 | bellard | { |
982 | ce1a14dc | pbrook | RawAIOCB *acb; |
983 | 83f64091 | bellard | int64_t offset; |
984 | 83f64091 | bellard | |
985 | ce1a14dc | pbrook | acb = qemu_aio_get(bs, cb, opaque); |
986 | ce1a14dc | pbrook | if (acb->hEvent) {
|
987 | ce1a14dc | pbrook | acb->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); |
988 | ce1a14dc | pbrook | if (!acb->hEvent) {
|
989 | ce1a14dc | pbrook | qemu_aio_release(acb); |
990 | ce1a14dc | pbrook | return NULL; |
991 | ce1a14dc | pbrook | } |
992 | ce1a14dc | pbrook | } |
993 | ce1a14dc | pbrook | memset(&acb->ov, 0, sizeof(acb->ov)); |
994 | 83f64091 | bellard | offset = sector_num * 512;
|
995 | ce1a14dc | pbrook | acb->ov.Offset = offset; |
996 | ce1a14dc | pbrook | acb->ov.OffsetHigh = offset >> 32;
|
997 | ce1a14dc | pbrook | acb->ov.hEvent = acb->hEvent; |
998 | ce1a14dc | pbrook | acb->count = nb_sectors * 512;
|
999 | 436e15b8 | bellard | #ifndef QEMU_TOOL
|
1000 | ce1a14dc | pbrook | qemu_add_wait_object(acb->ov.hEvent, raw_aio_cb, acb); |
1001 | 436e15b8 | bellard | #endif
|
1002 | ce1a14dc | pbrook | return acb;
|
1003 | 83f64091 | bellard | } |
1004 | 83f64091 | bellard | |
1005 | ce1a14dc | pbrook | static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
|
1006 | ce1a14dc | pbrook | int64_t sector_num, uint8_t *buf, int nb_sectors,
|
1007 | ce1a14dc | pbrook | BlockDriverCompletionFunc *cb, void *opaque)
|
1008 | 83f64091 | bellard | { |
1009 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
1010 | ce1a14dc | pbrook | RawAIOCB *acb; |
1011 | 83f64091 | bellard | int ret;
|
1012 | 83f64091 | bellard | |
1013 | ce1a14dc | pbrook | acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
1014 | ce1a14dc | pbrook | if (!acb)
|
1015 | ce1a14dc | pbrook | return NULL; |
1016 | ce1a14dc | pbrook | ret = ReadFile(s->hfile, buf, acb->count, NULL, &acb->ov);
|
1017 | ce1a14dc | pbrook | if (!ret) {
|
1018 | ce1a14dc | pbrook | qemu_aio_release(acb); |
1019 | ce1a14dc | pbrook | return NULL; |
1020 | ce1a14dc | pbrook | } |
1021 | ce1a14dc | pbrook | #ifdef QEMU_TOOL
|
1022 | ce1a14dc | pbrook | qemu_aio_release(acb); |
1023 | 436e15b8 | bellard | #endif
|
1024 | ce1a14dc | pbrook | return (BlockDriverAIOCB *)acb;
|
1025 | 83f64091 | bellard | } |
1026 | 83f64091 | bellard | |
1027 | ce1a14dc | pbrook | static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
|
1028 | ce1a14dc | pbrook | int64_t sector_num, uint8_t *buf, int nb_sectors,
|
1029 | ce1a14dc | pbrook | BlockDriverCompletionFunc *cb, void *opaque)
|
1030 | 83f64091 | bellard | { |
1031 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
1032 | ce1a14dc | pbrook | RawAIOCB *acb; |
1033 | ce1a14dc | pbrook | int ret;
|
1034 | 83f64091 | bellard | |
1035 | ce1a14dc | pbrook | acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
1036 | ce1a14dc | pbrook | if (!acb)
|
1037 | ce1a14dc | pbrook | return NULL; |
1038 | ce1a14dc | pbrook | ret = WriteFile(s->hfile, buf, acb->count, NULL, &acb->ov);
|
1039 | ce1a14dc | pbrook | if (!ret) {
|
1040 | ce1a14dc | pbrook | qemu_aio_release(acb); |
1041 | ce1a14dc | pbrook | return NULL; |
1042 | ce1a14dc | pbrook | } |
1043 | ce1a14dc | pbrook | #ifdef QEMU_TOOL
|
1044 | ce1a14dc | pbrook | qemu_aio_release(acb); |
1045 | 436e15b8 | bellard | #endif
|
1046 | ce1a14dc | pbrook | return (BlockDriverAIOCB *)acb;
|
1047 | 83f64091 | bellard | } |
1048 | 83f64091 | bellard | |
1049 | ce1a14dc | pbrook | static void raw_aio_cancel(BlockDriverAIOCB *blockacb) |
1050 | 83f64091 | bellard | { |
1051 | ce1a14dc | pbrook | #ifndef QEMU_TOOL
|
1052 | ce1a14dc | pbrook | RawAIOCB *acb = (RawAIOCB *)blockacb; |
1053 | ce1a14dc | pbrook | BlockDriverState *bs = acb->common.bs; |
1054 | ce1a14dc | pbrook | BDRVRawState *s = bs->opaque; |
1055 | ce1a14dc | pbrook | |
1056 | ce1a14dc | pbrook | qemu_del_wait_object(acb->ov.hEvent, raw_aio_cb, acb); |
1057 | ce1a14dc | pbrook | /* XXX: if more than one async I/O it is not correct */
|
1058 | ce1a14dc | pbrook | CancelIo(s->hfile); |
1059 | ce1a14dc | pbrook | qemu_aio_release(acb); |
1060 | ce1a14dc | pbrook | #endif
|
1061 | 83f64091 | bellard | } |
1062 | 83f64091 | bellard | |
1063 | 83f64091 | bellard | static void raw_flush(BlockDriverState *bs) |
1064 | 83f64091 | bellard | { |
1065 | 83f64091 | bellard | /* XXX: add it */
|
1066 | 83f64091 | bellard | } |
1067 | 83f64091 | bellard | |
1068 | 83f64091 | bellard | static void raw_close(BlockDriverState *bs) |
1069 | 83f64091 | bellard | { |
1070 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
1071 | 83f64091 | bellard | CloseHandle(s->hfile); |
1072 | 83f64091 | bellard | } |
1073 | 83f64091 | bellard | |
1074 | 83f64091 | bellard | static int raw_truncate(BlockDriverState *bs, int64_t offset) |
1075 | 83f64091 | bellard | { |
1076 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
1077 | 83f64091 | bellard | DWORD low, high; |
1078 | 83f64091 | bellard | |
1079 | 979b67ad | bellard | low = offset; |
1080 | 979b67ad | bellard | high = offset >> 32;
|
1081 | 83f64091 | bellard | if (!SetFilePointer(s->hfile, low, &high, FILE_BEGIN))
|
1082 | 83f64091 | bellard | return -EIO;
|
1083 | 83f64091 | bellard | if (!SetEndOfFile(s->hfile))
|
1084 | 83f64091 | bellard | return -EIO;
|
1085 | 83f64091 | bellard | return 0; |
1086 | 83f64091 | bellard | } |
1087 | 83f64091 | bellard | |
1088 | f45512fe | bellard | static int64_t raw_getlength(BlockDriverState *bs)
|
1089 | 83f64091 | bellard | { |
1090 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
1091 | 83f64091 | bellard | LARGE_INTEGER l; |
1092 | 19cb3738 | bellard | ULARGE_INTEGER available, total, total_free; |
1093 | 436e15b8 | bellard | |
1094 | f45512fe | bellard | switch(s->type) {
|
1095 | 19cb3738 | bellard | case FTYPE_FILE:
|
1096 | 19cb3738 | bellard | l.LowPart = GetFileSize(s->hfile, &l.HighPart); |
1097 | 19cb3738 | bellard | if (l.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR) |
1098 | 19cb3738 | bellard | return -EIO;
|
1099 | 19cb3738 | bellard | break;
|
1100 | 19cb3738 | bellard | case FTYPE_CD:
|
1101 | f45512fe | bellard | if (!GetDiskFreeSpaceEx(s->drive_path, &available, &total, &total_free))
|
1102 | 19cb3738 | bellard | return -EIO;
|
1103 | f45512fe | bellard | l.QuadPart = total.QuadPart; |
1104 | 19cb3738 | bellard | break;
|
1105 | 19cb3738 | bellard | default:
|
1106 | 19cb3738 | bellard | return -EIO;
|
1107 | 19cb3738 | bellard | } |
1108 | 83f64091 | bellard | return l.QuadPart;
|
1109 | 83f64091 | bellard | } |
1110 | 83f64091 | bellard | |
1111 | 83f64091 | bellard | static int raw_create(const char *filename, int64_t total_size, |
1112 | 83f64091 | bellard | const char *backing_file, int flags) |
1113 | 83f64091 | bellard | { |
1114 | 83f64091 | bellard | int fd;
|
1115 | 83f64091 | bellard | |
1116 | 83f64091 | bellard | if (flags || backing_file)
|
1117 | 83f64091 | bellard | return -ENOTSUP;
|
1118 | 83f64091 | bellard | |
1119 | 83f64091 | bellard | fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
1120 | 83f64091 | bellard | 0644);
|
1121 | 83f64091 | bellard | if (fd < 0) |
1122 | 83f64091 | bellard | return -EIO;
|
1123 | 83f64091 | bellard | set_sparse(fd); |
1124 | 83f64091 | bellard | ftruncate(fd, total_size * 512);
|
1125 | 83f64091 | bellard | close(fd); |
1126 | 83f64091 | bellard | return 0; |
1127 | 83f64091 | bellard | } |
1128 | 83f64091 | bellard | |
1129 | 83f64091 | bellard | void qemu_aio_init(void) |
1130 | 83f64091 | bellard | { |
1131 | 83f64091 | bellard | } |
1132 | 83f64091 | bellard | |
1133 | 83f64091 | bellard | void qemu_aio_poll(void) |
1134 | 83f64091 | bellard | { |
1135 | 83f64091 | bellard | } |
1136 | 83f64091 | bellard | |
1137 | 83f64091 | bellard | void qemu_aio_wait_start(void) |
1138 | 83f64091 | bellard | { |
1139 | 83f64091 | bellard | } |
1140 | 83f64091 | bellard | |
1141 | 83f64091 | bellard | void qemu_aio_wait(void) |
1142 | 83f64091 | bellard | { |
1143 | fd44d818 | bellard | #ifndef QEMU_TOOL
|
1144 | fd44d818 | bellard | qemu_bh_poll(); |
1145 | fd44d818 | bellard | #endif
|
1146 | 83f64091 | bellard | } |
1147 | 83f64091 | bellard | |
1148 | 83f64091 | bellard | void qemu_aio_wait_end(void) |
1149 | 83f64091 | bellard | { |
1150 | 83f64091 | bellard | } |
1151 | 83f64091 | bellard | |
1152 | 83f64091 | bellard | BlockDriver bdrv_raw = { |
1153 | 83f64091 | bellard | "raw",
|
1154 | 83f64091 | bellard | sizeof(BDRVRawState),
|
1155 | 83f64091 | bellard | NULL, /* no probe for protocols */ |
1156 | 83f64091 | bellard | raw_open, |
1157 | 83f64091 | bellard | NULL,
|
1158 | 83f64091 | bellard | NULL,
|
1159 | 83f64091 | bellard | raw_close, |
1160 | 83f64091 | bellard | raw_create, |
1161 | 83f64091 | bellard | raw_flush, |
1162 | 83f64091 | bellard | |
1163 | 83f64091 | bellard | #if 0
|
1164 | 83f64091 | bellard | .bdrv_aio_read = raw_aio_read,
|
1165 | 83f64091 | bellard | .bdrv_aio_write = raw_aio_write,
|
1166 | 83f64091 | bellard | .bdrv_aio_cancel = raw_aio_cancel,
|
1167 | ce1a14dc | pbrook | .aiocb_size = sizeof(RawAIOCB);
|
1168 | 83f64091 | bellard | #endif
|
1169 | 83f64091 | bellard | .protocol_name = "file",
|
1170 | 83f64091 | bellard | .bdrv_pread = raw_pread, |
1171 | 83f64091 | bellard | .bdrv_pwrite = raw_pwrite, |
1172 | 83f64091 | bellard | .bdrv_truncate = raw_truncate, |
1173 | 83f64091 | bellard | .bdrv_getlength = raw_getlength, |
1174 | 83f64091 | bellard | }; |
1175 | 19cb3738 | bellard | |
1176 | 19cb3738 | bellard | /***********************************************/
|
1177 | 19cb3738 | bellard | /* host device */
|
1178 | 19cb3738 | bellard | |
1179 | 19cb3738 | bellard | static int find_cdrom(char *cdrom_name, int cdrom_name_size) |
1180 | 19cb3738 | bellard | { |
1181 | 19cb3738 | bellard | char drives[256], *pdrv = drives; |
1182 | 19cb3738 | bellard | UINT type; |
1183 | 19cb3738 | bellard | |
1184 | f45512fe | bellard | memset(drives, 0, sizeof(drives)); |
1185 | 19cb3738 | bellard | GetLogicalDriveStrings(sizeof(drives), drives);
|
1186 | 19cb3738 | bellard | while(pdrv[0] != '\0') { |
1187 | 19cb3738 | bellard | type = GetDriveType(pdrv); |
1188 | 19cb3738 | bellard | switch(type) {
|
1189 | 19cb3738 | bellard | case DRIVE_CDROM:
|
1190 | 19cb3738 | bellard | snprintf(cdrom_name, cdrom_name_size, "\\\\.\\%c:", pdrv[0]); |
1191 | 19cb3738 | bellard | return 0; |
1192 | 19cb3738 | bellard | break;
|
1193 | 19cb3738 | bellard | } |
1194 | 19cb3738 | bellard | pdrv += lstrlen(pdrv) + 1;
|
1195 | 19cb3738 | bellard | } |
1196 | 19cb3738 | bellard | return -1; |
1197 | 19cb3738 | bellard | } |
1198 | 19cb3738 | bellard | |
1199 | f45512fe | bellard | static int find_device_type(BlockDriverState *bs, const char *filename) |
1200 | 19cb3738 | bellard | { |
1201 | f45512fe | bellard | BDRVRawState *s = bs->opaque; |
1202 | 19cb3738 | bellard | UINT type; |
1203 | 19cb3738 | bellard | const char *p; |
1204 | 19cb3738 | bellard | |
1205 | 19cb3738 | bellard | if (strstart(filename, "\\\\.\\", &p) || |
1206 | 19cb3738 | bellard | strstart(filename, "//./", &p)) {
|
1207 | f45512fe | bellard | snprintf(s->drive_path, sizeof(s->drive_path), "%c:\\", p[0]); |
1208 | f45512fe | bellard | type = GetDriveType(s->drive_path); |
1209 | 19cb3738 | bellard | if (type == DRIVE_CDROM)
|
1210 | 19cb3738 | bellard | return FTYPE_CD;
|
1211 | 19cb3738 | bellard | else
|
1212 | 19cb3738 | bellard | return FTYPE_FILE;
|
1213 | 19cb3738 | bellard | } else {
|
1214 | 19cb3738 | bellard | return FTYPE_FILE;
|
1215 | 19cb3738 | bellard | } |
1216 | 19cb3738 | bellard | } |
1217 | 19cb3738 | bellard | |
1218 | 19cb3738 | bellard | static int hdev_open(BlockDriverState *bs, const char *filename, int flags) |
1219 | 19cb3738 | bellard | { |
1220 | 19cb3738 | bellard | BDRVRawState *s = bs->opaque; |
1221 | 19cb3738 | bellard | int access_flags, create_flags;
|
1222 | 19cb3738 | bellard | DWORD overlapped; |
1223 | 19cb3738 | bellard | char device_name[64]; |
1224 | 19cb3738 | bellard | |
1225 | 19cb3738 | bellard | if (strstart(filename, "/dev/cdrom", NULL)) { |
1226 | 19cb3738 | bellard | if (find_cdrom(device_name, sizeof(device_name)) < 0) |
1227 | 19cb3738 | bellard | return -ENOENT;
|
1228 | 19cb3738 | bellard | filename = device_name; |
1229 | 19cb3738 | bellard | } else {
|
1230 | 19cb3738 | bellard | /* transform drive letters into device name */
|
1231 | 19cb3738 | bellard | if (((filename[0] >= 'a' && filename[0] <= 'z') || |
1232 | 19cb3738 | bellard | (filename[0] >= 'A' && filename[0] <= 'Z')) && |
1233 | 19cb3738 | bellard | filename[1] == ':' && filename[2] == '\0') { |
1234 | 19cb3738 | bellard | snprintf(device_name, sizeof(device_name), "\\\\.\\%c:", filename[0]); |
1235 | 19cb3738 | bellard | filename = device_name; |
1236 | 19cb3738 | bellard | } |
1237 | 19cb3738 | bellard | } |
1238 | f45512fe | bellard | s->type = find_device_type(bs, filename); |
1239 | 19cb3738 | bellard | |
1240 | 19cb3738 | bellard | if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
1241 | 19cb3738 | bellard | access_flags = GENERIC_READ | GENERIC_WRITE; |
1242 | 19cb3738 | bellard | } else {
|
1243 | 19cb3738 | bellard | access_flags = GENERIC_READ; |
1244 | 19cb3738 | bellard | } |
1245 | 19cb3738 | bellard | create_flags = OPEN_EXISTING; |
1246 | 19cb3738 | bellard | |
1247 | 19cb3738 | bellard | #ifdef QEMU_TOOL
|
1248 | 19cb3738 | bellard | overlapped = 0;
|
1249 | 19cb3738 | bellard | #else
|
1250 | 19cb3738 | bellard | overlapped = FILE_FLAG_OVERLAPPED; |
1251 | 19cb3738 | bellard | #endif
|
1252 | 19cb3738 | bellard | s->hfile = CreateFile(filename, access_flags, |
1253 | 19cb3738 | bellard | FILE_SHARE_READ, NULL,
|
1254 | 19cb3738 | bellard | create_flags, overlapped, 0);
|
1255 | 19cb3738 | bellard | if (s->hfile == INVALID_HANDLE_VALUE)
|
1256 | 19cb3738 | bellard | return -1; |
1257 | 19cb3738 | bellard | return 0; |
1258 | 19cb3738 | bellard | } |
1259 | 19cb3738 | bellard | |
1260 | 19cb3738 | bellard | #if 0
|
1261 | 19cb3738 | bellard | /***********************************************/
|
1262 | 19cb3738 | bellard | /* removable device additionnal commands */
|
1263 | 19cb3738 | bellard | |
1264 | 19cb3738 | bellard | static int raw_is_inserted(BlockDriverState *bs)
|
1265 | 19cb3738 | bellard | {
|
1266 | 19cb3738 | bellard | return 1;
|
1267 | 19cb3738 | bellard | }
|
1268 | 19cb3738 | bellard | |
1269 | 19cb3738 | bellard | static int raw_media_changed(BlockDriverState *bs)
|
1270 | 19cb3738 | bellard | {
|
1271 | 19cb3738 | bellard | return -ENOTSUP;
|
1272 | 19cb3738 | bellard | }
|
1273 | 19cb3738 | bellard | |
1274 | 19cb3738 | bellard | static int raw_eject(BlockDriverState *bs, int eject_flag)
|
1275 | 19cb3738 | bellard | {
|
1276 | 19cb3738 | bellard | DWORD ret_count;
|
1277 | 19cb3738 | bellard | |
1278 | 19cb3738 | bellard | if (s->type == FTYPE_FILE)
|
1279 | 19cb3738 | bellard | return -ENOTSUP;
|
1280 | 19cb3738 | bellard | if (eject_flag) {
|
1281 | 19cb3738 | bellard | DeviceIoControl(s->hfile, IOCTL_STORAGE_EJECT_MEDIA,
|
1282 | 19cb3738 | bellard | NULL, 0, NULL, 0, &lpBytesReturned, NULL);
|
1283 | 19cb3738 | bellard | } else {
|
1284 | 19cb3738 | bellard | DeviceIoControl(s->hfile, IOCTL_STORAGE_LOAD_MEDIA,
|
1285 | 19cb3738 | bellard | NULL, 0, NULL, 0, &lpBytesReturned, NULL);
|
1286 | 19cb3738 | bellard | }
|
1287 | 19cb3738 | bellard | }
|
1288 | 19cb3738 | bellard | |
1289 | 19cb3738 | bellard | static int raw_set_locked(BlockDriverState *bs, int locked)
|
1290 | 19cb3738 | bellard | {
|
1291 | 19cb3738 | bellard | return -ENOTSUP;
|
1292 | 19cb3738 | bellard | }
|
1293 | 19cb3738 | bellard | #endif
|
1294 | 19cb3738 | bellard | |
1295 | 19cb3738 | bellard | BlockDriver bdrv_host_device = { |
1296 | 19cb3738 | bellard | "host_device",
|
1297 | 19cb3738 | bellard | sizeof(BDRVRawState),
|
1298 | 19cb3738 | bellard | NULL, /* no probe for protocols */ |
1299 | 19cb3738 | bellard | hdev_open, |
1300 | 19cb3738 | bellard | NULL,
|
1301 | 19cb3738 | bellard | NULL,
|
1302 | 19cb3738 | bellard | raw_close, |
1303 | 19cb3738 | bellard | NULL,
|
1304 | 19cb3738 | bellard | raw_flush, |
1305 | 19cb3738 | bellard | |
1306 | 19cb3738 | bellard | #if 0
|
1307 | 19cb3738 | bellard | .bdrv_aio_read = raw_aio_read,
|
1308 | 19cb3738 | bellard | .bdrv_aio_write = raw_aio_write,
|
1309 | 19cb3738 | bellard | .bdrv_aio_cancel = raw_aio_cancel,
|
1310 | 19cb3738 | bellard | .aiocb_size = sizeof(RawAIOCB);
|
1311 | 19cb3738 | bellard | #endif
|
1312 | 19cb3738 | bellard | .bdrv_pread = raw_pread, |
1313 | 19cb3738 | bellard | .bdrv_pwrite = raw_pwrite, |
1314 | 19cb3738 | bellard | .bdrv_getlength = raw_getlength, |
1315 | 19cb3738 | bellard | }; |
1316 | 83f64091 | bellard | #endif /* _WIN32 */ |