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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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#include "vl.h" |
25 |
#include "block_int.h" |
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#include <assert.h> |
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#ifndef _WIN32
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#include <aio.h> |
29 |
|
30 |
#ifndef QEMU_TOOL
|
31 |
#include "exec-all.h" |
32 |
#endif
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33 |
|
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#ifdef CONFIG_COCOA
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#include <paths.h> |
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#include <sys/param.h> |
37 |
#include <IOKit/IOKitLib.h> |
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#include <IOKit/IOBSD.h> |
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#include <IOKit/storage/IOMediaBSDClient.h> |
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#include <IOKit/storage/IOMedia.h> |
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#include <IOKit/storage/IOCDMedia.h> |
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//#include <IOKit/storage/IOCDTypes.h>
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#include <CoreFoundation/CoreFoundation.h> |
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#endif
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|
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#ifdef __sun__
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#define _POSIX_PTHREAD_SEMANTICS 1 |
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#include <signal.h> |
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#include <sys/dkio.h> |
50 |
#endif
|
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#ifdef __linux__
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#include <sys/ioctl.h> |
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#include <linux/cdrom.h> |
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#include <linux/fd.h> |
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#endif
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#ifdef __FreeBSD__
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#include <sys/disk.h> |
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#endif
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|
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//#define DEBUG_FLOPPY
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|
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#define FTYPE_FILE 0 |
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#define FTYPE_CD 1 |
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#define FTYPE_FD 2 |
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|
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/* if the FD is not accessed during that time (in ms), we try to
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reopen it to see if the disk has been changed */
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#define FD_OPEN_TIMEOUT 1000 |
69 |
|
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typedef struct BDRVRawState { |
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int fd;
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int type;
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#if defined(__linux__)
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/* linux floppy specific */
|
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int fd_open_flags;
|
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int64_t fd_open_time; |
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int64_t fd_error_time; |
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int fd_got_error;
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int fd_media_changed;
|
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#endif
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} BDRVRawState; |
82 |
|
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static int fd_open(BlockDriverState *bs); |
84 |
|
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static int raw_open(BlockDriverState *bs, const char *filename, int flags) |
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{ |
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BDRVRawState *s = bs->opaque; |
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int fd, open_flags, ret;
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|
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open_flags = O_BINARY; |
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if ((flags & BDRV_O_ACCESS) == O_RDWR) {
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open_flags |= O_RDWR; |
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} else {
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open_flags |= O_RDONLY; |
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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; |
99 |
|
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s->type = FTYPE_FILE; |
101 |
|
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fd = open(filename, open_flags, 0644);
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if (fd < 0) { |
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ret = -errno; |
105 |
if (ret == -EROFS)
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ret = -EACCES; |
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return ret;
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} |
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s->fd = fd; |
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return 0; |
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} |
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|
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/* XXX: use host sector size if necessary with:
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#ifdef DIOCGSECTORSIZE
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{
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unsigned int sectorsize = 512;
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if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) &&
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sectorsize > bufsize)
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bufsize = sectorsize;
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}
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#endif
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#ifdef CONFIG_COCOA
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u_int32_t blockSize = 512;
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if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) {
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bufsize = blockSize;
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}
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#endif
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*/
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static int raw_pread(BlockDriverState *bs, int64_t offset, |
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uint8_t *buf, int count)
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{ |
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BDRVRawState *s = bs->opaque; |
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int ret;
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|
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ret = fd_open(bs); |
137 |
if (ret < 0) |
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return ret;
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|
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lseek(s->fd, offset, SEEK_SET); |
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ret = read(s->fd, buf, count); |
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return ret;
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} |
144 |
|
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static int raw_pwrite(BlockDriverState *bs, int64_t offset, |
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const uint8_t *buf, int count) |
147 |
{ |
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BDRVRawState *s = bs->opaque; |
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int ret;
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150 |
|
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ret = fd_open(bs); |
152 |
if (ret < 0) |
153 |
return ret;
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154 |
|
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lseek(s->fd, offset, SEEK_SET); |
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ret = write(s->fd, buf, count); |
157 |
return ret;
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} |
159 |
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/***********************************************************/
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/* Unix AIO using POSIX AIO */
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|
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typedef struct RawAIOCB { |
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BlockDriverAIOCB common; |
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struct aiocb aiocb;
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struct RawAIOCB *next;
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} RawAIOCB; |
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static int aio_sig_num = SIGUSR2; |
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static RawAIOCB *first_aio; /* AIO issued */ |
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static int aio_initialized = 0; |
172 |
|
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static void aio_signal_handler(int signum) |
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{ |
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#ifndef QEMU_TOOL
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CPUState *env = cpu_single_env; |
177 |
if (env) {
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/* stop the currently executing cpu because a timer occured */
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cpu_interrupt(env, CPU_INTERRUPT_EXIT); |
180 |
#ifdef USE_KQEMU
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if (env->kqemu_enabled) {
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kqemu_cpu_interrupt(env); |
183 |
} |
184 |
#endif
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} |
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#endif
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} |
188 |
|
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void qemu_aio_init(void) |
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{ |
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struct sigaction act;
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aio_initialized = 1;
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sigfillset(&act.sa_mask); |
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act.sa_flags = 0; /* do not restart syscalls to interrupt select() */ |
197 |
act.sa_handler = aio_signal_handler; |
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sigaction(aio_sig_num, &act, NULL);
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|
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#if defined(__GLIBC__) && defined(__linux__)
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{ |
202 |
/* XXX: aio thread exit seems to hang on RedHat 9 and this init
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seems to fix the problem. */
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struct aioinit ai;
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memset(&ai, 0, sizeof(ai)); |
206 |
ai.aio_threads = 1;
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ai.aio_num = 1;
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ai.aio_idle_time = 365 * 100000; |
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aio_init(&ai); |
210 |
} |
211 |
#endif
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} |
213 |
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214 |
void qemu_aio_poll(void) |
215 |
{ |
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RawAIOCB *acb, **pacb; |
217 |
int ret;
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for(;;) {
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pacb = &first_aio; |
221 |
for(;;) {
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acb = *pacb; |
223 |
if (!acb)
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goto the_end;
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ret = aio_error(&acb->aiocb); |
226 |
if (ret == ECANCELED) {
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/* remove the request */
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*pacb = acb->next; |
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qemu_aio_release(acb); |
230 |
} else if (ret != EINPROGRESS) { |
231 |
/* end of aio */
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if (ret == 0) { |
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ret = aio_return(&acb->aiocb); |
234 |
if (ret == acb->aiocb.aio_nbytes)
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ret = 0;
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else
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ret = -EINVAL; |
238 |
} else {
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ret = -ret; |
240 |
} |
241 |
/* remove the request */
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*pacb = acb->next; |
243 |
/* call the callback */
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acb->common.cb(acb->common.opaque, ret); |
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qemu_aio_release(acb); |
246 |
break;
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} else {
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pacb = &acb->next; |
249 |
} |
250 |
} |
251 |
} |
252 |
the_end: ;
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} |
254 |
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/* Wait for all IO requests to complete. */
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void qemu_aio_flush(void) |
257 |
{ |
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qemu_aio_wait_start(); |
259 |
qemu_aio_poll(); |
260 |
while (first_aio) {
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qemu_aio_wait(); |
262 |
} |
263 |
qemu_aio_wait_end(); |
264 |
} |
265 |
|
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/* wait until at least one AIO was handled */
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267 |
static sigset_t wait_oset;
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268 |
|
269 |
void qemu_aio_wait_start(void) |
270 |
{ |
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sigset_t set; |
272 |
|
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if (!aio_initialized)
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qemu_aio_init(); |
275 |
sigemptyset(&set); |
276 |
sigaddset(&set, aio_sig_num); |
277 |
sigprocmask(SIG_BLOCK, &set, &wait_oset); |
278 |
} |
279 |
|
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void qemu_aio_wait(void) |
281 |
{ |
282 |
sigset_t set; |
283 |
int nb_sigs;
|
284 |
|
285 |
#ifndef QEMU_TOOL
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if (qemu_bh_poll())
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return;
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#endif
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sigemptyset(&set); |
290 |
sigaddset(&set, aio_sig_num); |
291 |
sigwait(&set, &nb_sigs); |
292 |
qemu_aio_poll(); |
293 |
} |
294 |
|
295 |
void qemu_aio_wait_end(void) |
296 |
{ |
297 |
sigprocmask(SIG_SETMASK, &wait_oset, NULL);
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} |
299 |
|
300 |
static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
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int64_t sector_num, uint8_t *buf, int nb_sectors,
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BlockDriverCompletionFunc *cb, void *opaque)
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{ |
304 |
BDRVRawState *s = bs->opaque; |
305 |
RawAIOCB *acb; |
306 |
|
307 |
if (fd_open(bs) < 0) |
308 |
return NULL; |
309 |
|
310 |
acb = qemu_aio_get(bs, cb, opaque); |
311 |
if (!acb)
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return NULL; |
313 |
acb->aiocb.aio_fildes = s->fd; |
314 |
acb->aiocb.aio_sigevent.sigev_signo = aio_sig_num; |
315 |
acb->aiocb.aio_sigevent.sigev_notify = SIGEV_SIGNAL; |
316 |
acb->aiocb.aio_buf = buf; |
317 |
acb->aiocb.aio_nbytes = nb_sectors * 512;
|
318 |
acb->aiocb.aio_offset = sector_num * 512;
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319 |
acb->next = first_aio; |
320 |
first_aio = acb; |
321 |
return acb;
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322 |
} |
323 |
|
324 |
static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
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325 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
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BlockDriverCompletionFunc *cb, void *opaque)
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{ |
328 |
RawAIOCB *acb; |
329 |
|
330 |
acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
331 |
if (!acb)
|
332 |
return NULL; |
333 |
if (aio_read(&acb->aiocb) < 0) { |
334 |
qemu_aio_release(acb); |
335 |
return NULL; |
336 |
} |
337 |
return &acb->common;
|
338 |
} |
339 |
|
340 |
static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
|
341 |
int64_t sector_num, const uint8_t *buf, int nb_sectors, |
342 |
BlockDriverCompletionFunc *cb, void *opaque)
|
343 |
{ |
344 |
RawAIOCB *acb; |
345 |
|
346 |
acb = raw_aio_setup(bs, sector_num, (uint8_t*)buf, nb_sectors, cb, opaque); |
347 |
if (!acb)
|
348 |
return NULL; |
349 |
if (aio_write(&acb->aiocb) < 0) { |
350 |
qemu_aio_release(acb); |
351 |
return NULL; |
352 |
} |
353 |
return &acb->common;
|
354 |
} |
355 |
|
356 |
static void raw_aio_cancel(BlockDriverAIOCB *blockacb) |
357 |
{ |
358 |
int ret;
|
359 |
RawAIOCB *acb = (RawAIOCB *)blockacb; |
360 |
RawAIOCB **pacb; |
361 |
|
362 |
ret = aio_cancel(acb->aiocb.aio_fildes, &acb->aiocb); |
363 |
if (ret == AIO_NOTCANCELED) {
|
364 |
/* fail safe: if the aio could not be canceled, we wait for
|
365 |
it */
|
366 |
while (aio_error(&acb->aiocb) == EINPROGRESS);
|
367 |
} |
368 |
|
369 |
/* remove the callback from the queue */
|
370 |
pacb = &first_aio; |
371 |
for(;;) {
|
372 |
if (*pacb == NULL) { |
373 |
break;
|
374 |
} else if (*pacb == acb) { |
375 |
*pacb = acb->next; |
376 |
qemu_aio_release(acb); |
377 |
break;
|
378 |
} |
379 |
pacb = &acb->next; |
380 |
} |
381 |
} |
382 |
|
383 |
static void raw_close(BlockDriverState *bs) |
384 |
{ |
385 |
BDRVRawState *s = bs->opaque; |
386 |
if (s->fd >= 0) { |
387 |
close(s->fd); |
388 |
s->fd = -1;
|
389 |
} |
390 |
} |
391 |
|
392 |
static int raw_truncate(BlockDriverState *bs, int64_t offset) |
393 |
{ |
394 |
BDRVRawState *s = bs->opaque; |
395 |
if (s->type != FTYPE_FILE)
|
396 |
return -ENOTSUP;
|
397 |
if (ftruncate(s->fd, offset) < 0) |
398 |
return -errno;
|
399 |
return 0; |
400 |
} |
401 |
|
402 |
static int64_t raw_getlength(BlockDriverState *bs)
|
403 |
{ |
404 |
BDRVRawState *s = bs->opaque; |
405 |
int fd = s->fd;
|
406 |
int64_t size; |
407 |
#ifdef _BSD
|
408 |
struct stat sb;
|
409 |
#endif
|
410 |
#ifdef __sun__
|
411 |
struct dk_minfo minfo;
|
412 |
int rv;
|
413 |
#endif
|
414 |
int ret;
|
415 |
|
416 |
ret = fd_open(bs); |
417 |
if (ret < 0) |
418 |
return ret;
|
419 |
|
420 |
#ifdef _BSD
|
421 |
if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
|
422 |
#ifdef DIOCGMEDIASIZE
|
423 |
if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
|
424 |
#endif
|
425 |
#ifdef CONFIG_COCOA
|
426 |
size = LONG_LONG_MAX; |
427 |
#else
|
428 |
size = lseek(fd, 0LL, SEEK_END);
|
429 |
#endif
|
430 |
} else
|
431 |
#endif
|
432 |
#ifdef __sun__
|
433 |
/*
|
434 |
* use the DKIOCGMEDIAINFO ioctl to read the size.
|
435 |
*/
|
436 |
rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo ); |
437 |
if ( rv != -1 ) { |
438 |
size = minfo.dki_lbsize * minfo.dki_capacity; |
439 |
} else /* there are reports that lseek on some devices |
440 |
fails, but irc discussion said that contingency
|
441 |
on contingency was overkill */
|
442 |
#endif
|
443 |
{ |
444 |
size = lseek(fd, 0, SEEK_END);
|
445 |
} |
446 |
return size;
|
447 |
} |
448 |
|
449 |
static int raw_create(const char *filename, int64_t total_size, |
450 |
const char *backing_file, int flags) |
451 |
{ |
452 |
int fd;
|
453 |
|
454 |
if (flags || backing_file)
|
455 |
return -ENOTSUP;
|
456 |
|
457 |
fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
458 |
0644);
|
459 |
if (fd < 0) |
460 |
return -EIO;
|
461 |
ftruncate(fd, total_size * 512);
|
462 |
close(fd); |
463 |
return 0; |
464 |
} |
465 |
|
466 |
static void raw_flush(BlockDriverState *bs) |
467 |
{ |
468 |
BDRVRawState *s = bs->opaque; |
469 |
fsync(s->fd); |
470 |
} |
471 |
|
472 |
BlockDriver bdrv_raw = { |
473 |
"raw",
|
474 |
sizeof(BDRVRawState),
|
475 |
NULL, /* no probe for protocols */ |
476 |
raw_open, |
477 |
NULL,
|
478 |
NULL,
|
479 |
raw_close, |
480 |
raw_create, |
481 |
raw_flush, |
482 |
|
483 |
.bdrv_aio_read = raw_aio_read, |
484 |
.bdrv_aio_write = raw_aio_write, |
485 |
.bdrv_aio_cancel = raw_aio_cancel, |
486 |
.aiocb_size = sizeof(RawAIOCB),
|
487 |
.protocol_name = "file",
|
488 |
.bdrv_pread = raw_pread, |
489 |
.bdrv_pwrite = raw_pwrite, |
490 |
.bdrv_truncate = raw_truncate, |
491 |
.bdrv_getlength = raw_getlength, |
492 |
}; |
493 |
|
494 |
/***********************************************/
|
495 |
/* host device */
|
496 |
|
497 |
#ifdef CONFIG_COCOA
|
498 |
static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator );
|
499 |
static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ); |
500 |
|
501 |
kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ) |
502 |
{ |
503 |
kern_return_t kernResult; |
504 |
mach_port_t masterPort; |
505 |
CFMutableDictionaryRef classesToMatch; |
506 |
|
507 |
kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort ); |
508 |
if ( KERN_SUCCESS != kernResult ) {
|
509 |
printf( "IOMasterPort returned %d\n", kernResult );
|
510 |
} |
511 |
|
512 |
classesToMatch = IOServiceMatching( kIOCDMediaClass ); |
513 |
if ( classesToMatch == NULL ) { |
514 |
printf( "IOServiceMatching returned a NULL dictionary.\n" );
|
515 |
} else {
|
516 |
CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue ); |
517 |
} |
518 |
kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator ); |
519 |
if ( KERN_SUCCESS != kernResult )
|
520 |
{ |
521 |
printf( "IOServiceGetMatchingServices returned %d\n", kernResult );
|
522 |
} |
523 |
|
524 |
return kernResult;
|
525 |
} |
526 |
|
527 |
kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize )
|
528 |
{ |
529 |
io_object_t nextMedia; |
530 |
kern_return_t kernResult = KERN_FAILURE; |
531 |
*bsdPath = '\0';
|
532 |
nextMedia = IOIteratorNext( mediaIterator ); |
533 |
if ( nextMedia )
|
534 |
{ |
535 |
CFTypeRef bsdPathAsCFString; |
536 |
bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 );
|
537 |
if ( bsdPathAsCFString ) {
|
538 |
size_t devPathLength; |
539 |
strcpy( bsdPath, _PATH_DEV ); |
540 |
strcat( bsdPath, "r" );
|
541 |
devPathLength = strlen( bsdPath ); |
542 |
if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) {
|
543 |
kernResult = KERN_SUCCESS; |
544 |
} |
545 |
CFRelease( bsdPathAsCFString ); |
546 |
} |
547 |
IOObjectRelease( nextMedia ); |
548 |
} |
549 |
|
550 |
return kernResult;
|
551 |
} |
552 |
|
553 |
#endif
|
554 |
|
555 |
static int hdev_open(BlockDriverState *bs, const char *filename, int flags) |
556 |
{ |
557 |
BDRVRawState *s = bs->opaque; |
558 |
int fd, open_flags, ret;
|
559 |
|
560 |
#ifdef CONFIG_COCOA
|
561 |
if (strstart(filename, "/dev/cdrom", NULL)) { |
562 |
kern_return_t kernResult; |
563 |
io_iterator_t mediaIterator; |
564 |
char bsdPath[ MAXPATHLEN ];
|
565 |
int fd;
|
566 |
|
567 |
kernResult = FindEjectableCDMedia( &mediaIterator ); |
568 |
kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) );
|
569 |
|
570 |
if ( bsdPath[ 0 ] != '\0' ) { |
571 |
strcat(bsdPath,"s0");
|
572 |
/* some CDs don't have a partition 0 */
|
573 |
fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE); |
574 |
if (fd < 0) { |
575 |
bsdPath[strlen(bsdPath)-1] = '1'; |
576 |
} else {
|
577 |
close(fd); |
578 |
} |
579 |
filename = bsdPath; |
580 |
} |
581 |
|
582 |
if ( mediaIterator )
|
583 |
IOObjectRelease( mediaIterator ); |
584 |
} |
585 |
#endif
|
586 |
open_flags = O_BINARY; |
587 |
if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
588 |
open_flags |= O_RDWR; |
589 |
} else {
|
590 |
open_flags |= O_RDONLY; |
591 |
bs->read_only = 1;
|
592 |
} |
593 |
|
594 |
s->type = FTYPE_FILE; |
595 |
#if defined(__linux__)
|
596 |
if (strstart(filename, "/dev/cd", NULL)) { |
597 |
/* open will not fail even if no CD is inserted */
|
598 |
open_flags |= O_NONBLOCK; |
599 |
s->type = FTYPE_CD; |
600 |
} else if (strstart(filename, "/dev/fd", NULL)) { |
601 |
s->type = FTYPE_FD; |
602 |
s->fd_open_flags = open_flags; |
603 |
/* open will not fail even if no floppy is inserted */
|
604 |
open_flags |= O_NONBLOCK; |
605 |
} |
606 |
#endif
|
607 |
fd = open(filename, open_flags, 0644);
|
608 |
if (fd < 0) { |
609 |
ret = -errno; |
610 |
if (ret == -EROFS)
|
611 |
ret = -EACCES; |
612 |
return ret;
|
613 |
} |
614 |
s->fd = fd; |
615 |
#if defined(__linux__)
|
616 |
/* close fd so that we can reopen it as needed */
|
617 |
if (s->type == FTYPE_FD) {
|
618 |
close(s->fd); |
619 |
s->fd = -1;
|
620 |
s->fd_media_changed = 1;
|
621 |
} |
622 |
#endif
|
623 |
return 0; |
624 |
} |
625 |
|
626 |
#if defined(__linux__) && !defined(QEMU_TOOL)
|
627 |
|
628 |
/* Note: we do not have a reliable method to detect if the floppy is
|
629 |
present. The current method is to try to open the floppy at every
|
630 |
I/O and to keep it opened during a few hundreds of ms. */
|
631 |
static int fd_open(BlockDriverState *bs) |
632 |
{ |
633 |
BDRVRawState *s = bs->opaque; |
634 |
int last_media_present;
|
635 |
|
636 |
if (s->type != FTYPE_FD)
|
637 |
return 0; |
638 |
last_media_present = (s->fd >= 0);
|
639 |
if (s->fd >= 0 && |
640 |
(qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) { |
641 |
close(s->fd); |
642 |
s->fd = -1;
|
643 |
#ifdef DEBUG_FLOPPY
|
644 |
printf("Floppy closed\n");
|
645 |
#endif
|
646 |
} |
647 |
if (s->fd < 0) { |
648 |
if (s->fd_got_error &&
|
649 |
(qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) { |
650 |
#ifdef DEBUG_FLOPPY
|
651 |
printf("No floppy (open delayed)\n");
|
652 |
#endif
|
653 |
return -EIO;
|
654 |
} |
655 |
s->fd = open(bs->filename, s->fd_open_flags); |
656 |
if (s->fd < 0) { |
657 |
s->fd_error_time = qemu_get_clock(rt_clock); |
658 |
s->fd_got_error = 1;
|
659 |
if (last_media_present)
|
660 |
s->fd_media_changed = 1;
|
661 |
#ifdef DEBUG_FLOPPY
|
662 |
printf("No floppy\n");
|
663 |
#endif
|
664 |
return -EIO;
|
665 |
} |
666 |
#ifdef DEBUG_FLOPPY
|
667 |
printf("Floppy opened\n");
|
668 |
#endif
|
669 |
} |
670 |
if (!last_media_present)
|
671 |
s->fd_media_changed = 1;
|
672 |
s->fd_open_time = qemu_get_clock(rt_clock); |
673 |
s->fd_got_error = 0;
|
674 |
return 0; |
675 |
} |
676 |
#else
|
677 |
static int fd_open(BlockDriverState *bs) |
678 |
{ |
679 |
return 0; |
680 |
} |
681 |
#endif
|
682 |
|
683 |
#if defined(__linux__)
|
684 |
|
685 |
static int raw_is_inserted(BlockDriverState *bs) |
686 |
{ |
687 |
BDRVRawState *s = bs->opaque; |
688 |
int ret;
|
689 |
|
690 |
switch(s->type) {
|
691 |
case FTYPE_CD:
|
692 |
ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); |
693 |
if (ret == CDS_DISC_OK)
|
694 |
return 1; |
695 |
else
|
696 |
return 0; |
697 |
break;
|
698 |
case FTYPE_FD:
|
699 |
ret = fd_open(bs); |
700 |
return (ret >= 0); |
701 |
default:
|
702 |
return 1; |
703 |
} |
704 |
} |
705 |
|
706 |
/* currently only used by fdc.c, but a CD version would be good too */
|
707 |
static int raw_media_changed(BlockDriverState *bs) |
708 |
{ |
709 |
BDRVRawState *s = bs->opaque; |
710 |
|
711 |
switch(s->type) {
|
712 |
case FTYPE_FD:
|
713 |
{ |
714 |
int ret;
|
715 |
/* XXX: we do not have a true media changed indication. It
|
716 |
does not work if the floppy is changed without trying
|
717 |
to read it */
|
718 |
fd_open(bs); |
719 |
ret = s->fd_media_changed; |
720 |
s->fd_media_changed = 0;
|
721 |
#ifdef DEBUG_FLOPPY
|
722 |
printf("Floppy changed=%d\n", ret);
|
723 |
#endif
|
724 |
return ret;
|
725 |
} |
726 |
default:
|
727 |
return -ENOTSUP;
|
728 |
} |
729 |
} |
730 |
|
731 |
static int raw_eject(BlockDriverState *bs, int eject_flag) |
732 |
{ |
733 |
BDRVRawState *s = bs->opaque; |
734 |
|
735 |
switch(s->type) {
|
736 |
case FTYPE_CD:
|
737 |
if (eject_flag) {
|
738 |
if (ioctl (s->fd, CDROMEJECT, NULL) < 0) |
739 |
perror("CDROMEJECT");
|
740 |
} else {
|
741 |
if (ioctl (s->fd, CDROMCLOSETRAY, NULL) < 0) |
742 |
perror("CDROMEJECT");
|
743 |
} |
744 |
break;
|
745 |
case FTYPE_FD:
|
746 |
{ |
747 |
int fd;
|
748 |
if (s->fd >= 0) { |
749 |
close(s->fd); |
750 |
s->fd = -1;
|
751 |
} |
752 |
fd = open(bs->filename, s->fd_open_flags | O_NONBLOCK); |
753 |
if (fd >= 0) { |
754 |
if (ioctl(fd, FDEJECT, 0) < 0) |
755 |
perror("FDEJECT");
|
756 |
close(fd); |
757 |
} |
758 |
} |
759 |
break;
|
760 |
default:
|
761 |
return -ENOTSUP;
|
762 |
} |
763 |
return 0; |
764 |
} |
765 |
|
766 |
static int raw_set_locked(BlockDriverState *bs, int locked) |
767 |
{ |
768 |
BDRVRawState *s = bs->opaque; |
769 |
|
770 |
switch(s->type) {
|
771 |
case FTYPE_CD:
|
772 |
if (ioctl (s->fd, CDROM_LOCKDOOR, locked) < 0) { |
773 |
/* Note: an error can happen if the distribution automatically
|
774 |
mounts the CD-ROM */
|
775 |
// perror("CDROM_LOCKDOOR");
|
776 |
} |
777 |
break;
|
778 |
default:
|
779 |
return -ENOTSUP;
|
780 |
} |
781 |
return 0; |
782 |
} |
783 |
|
784 |
#else
|
785 |
|
786 |
static int raw_is_inserted(BlockDriverState *bs) |
787 |
{ |
788 |
return 1; |
789 |
} |
790 |
|
791 |
static int raw_media_changed(BlockDriverState *bs) |
792 |
{ |
793 |
return -ENOTSUP;
|
794 |
} |
795 |
|
796 |
static int raw_eject(BlockDriverState *bs, int eject_flag) |
797 |
{ |
798 |
return -ENOTSUP;
|
799 |
} |
800 |
|
801 |
static int raw_set_locked(BlockDriverState *bs, int locked) |
802 |
{ |
803 |
return -ENOTSUP;
|
804 |
} |
805 |
|
806 |
#endif /* !linux */ |
807 |
|
808 |
BlockDriver bdrv_host_device = { |
809 |
"host_device",
|
810 |
sizeof(BDRVRawState),
|
811 |
NULL, /* no probe for protocols */ |
812 |
hdev_open, |
813 |
NULL,
|
814 |
NULL,
|
815 |
raw_close, |
816 |
NULL,
|
817 |
raw_flush, |
818 |
|
819 |
.bdrv_aio_read = raw_aio_read, |
820 |
.bdrv_aio_write = raw_aio_write, |
821 |
.bdrv_aio_cancel = raw_aio_cancel, |
822 |
.aiocb_size = sizeof(RawAIOCB),
|
823 |
.bdrv_pread = raw_pread, |
824 |
.bdrv_pwrite = raw_pwrite, |
825 |
.bdrv_getlength = raw_getlength, |
826 |
|
827 |
/* removable device support */
|
828 |
.bdrv_is_inserted = raw_is_inserted, |
829 |
.bdrv_media_changed = raw_media_changed, |
830 |
.bdrv_eject = raw_eject, |
831 |
.bdrv_set_locked = raw_set_locked, |
832 |
}; |
833 |
|
834 |
#else /* _WIN32 */ |
835 |
|
836 |
/* XXX: use another file ? */
|
837 |
#include <winioctl.h> |
838 |
|
839 |
#define FTYPE_FILE 0 |
840 |
#define FTYPE_CD 1 |
841 |
#define FTYPE_HARDDISK 2 |
842 |
|
843 |
typedef struct BDRVRawState { |
844 |
HANDLE hfile; |
845 |
int type;
|
846 |
char drive_path[16]; /* format: "d:\" */ |
847 |
} BDRVRawState; |
848 |
|
849 |
typedef struct RawAIOCB { |
850 |
BlockDriverAIOCB common; |
851 |
HANDLE hEvent; |
852 |
OVERLAPPED ov; |
853 |
int count;
|
854 |
} RawAIOCB; |
855 |
|
856 |
int qemu_ftruncate64(int fd, int64_t length) |
857 |
{ |
858 |
LARGE_INTEGER li; |
859 |
LONG high; |
860 |
HANDLE h; |
861 |
BOOL res; |
862 |
|
863 |
if ((GetVersion() & 0x80000000UL) && (length >> 32) != 0) |
864 |
return -1; |
865 |
|
866 |
h = (HANDLE)_get_osfhandle(fd); |
867 |
|
868 |
/* get current position, ftruncate do not change position */
|
869 |
li.HighPart = 0;
|
870 |
li.LowPart = SetFilePointer (h, 0, &li.HighPart, FILE_CURRENT);
|
871 |
if (li.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR) |
872 |
return -1; |
873 |
|
874 |
high = length >> 32;
|
875 |
if (!SetFilePointer(h, (DWORD) length, &high, FILE_BEGIN))
|
876 |
return -1; |
877 |
res = SetEndOfFile(h); |
878 |
|
879 |
/* back to old position */
|
880 |
SetFilePointer(h, li.LowPart, &li.HighPart, FILE_BEGIN); |
881 |
return res ? 0 : -1; |
882 |
} |
883 |
|
884 |
static int set_sparse(int fd) |
885 |
{ |
886 |
DWORD returned; |
887 |
return (int) DeviceIoControl((HANDLE)_get_osfhandle(fd), FSCTL_SET_SPARSE, |
888 |
NULL, 0, NULL, 0, &returned, NULL); |
889 |
} |
890 |
|
891 |
static int raw_open(BlockDriverState *bs, const char *filename, int flags) |
892 |
{ |
893 |
BDRVRawState *s = bs->opaque; |
894 |
int access_flags, create_flags;
|
895 |
DWORD overlapped; |
896 |
|
897 |
s->type = FTYPE_FILE; |
898 |
|
899 |
if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
900 |
access_flags = GENERIC_READ | GENERIC_WRITE; |
901 |
} else {
|
902 |
access_flags = GENERIC_READ; |
903 |
} |
904 |
if (flags & BDRV_O_CREAT) {
|
905 |
create_flags = CREATE_ALWAYS; |
906 |
} else {
|
907 |
create_flags = OPEN_EXISTING; |
908 |
} |
909 |
#ifdef QEMU_TOOL
|
910 |
overlapped = FILE_ATTRIBUTE_NORMAL; |
911 |
#else
|
912 |
overlapped = FILE_FLAG_OVERLAPPED; |
913 |
#endif
|
914 |
s->hfile = CreateFile(filename, access_flags, |
915 |
FILE_SHARE_READ, NULL,
|
916 |
create_flags, overlapped, NULL);
|
917 |
if (s->hfile == INVALID_HANDLE_VALUE) {
|
918 |
int err = GetLastError();
|
919 |
|
920 |
if (err == ERROR_ACCESS_DENIED)
|
921 |
return -EACCES;
|
922 |
return -1; |
923 |
} |
924 |
return 0; |
925 |
} |
926 |
|
927 |
static int raw_pread(BlockDriverState *bs, int64_t offset, |
928 |
uint8_t *buf, int count)
|
929 |
{ |
930 |
BDRVRawState *s = bs->opaque; |
931 |
OVERLAPPED ov; |
932 |
DWORD ret_count; |
933 |
int ret;
|
934 |
|
935 |
memset(&ov, 0, sizeof(ov)); |
936 |
ov.Offset = offset; |
937 |
ov.OffsetHigh = offset >> 32;
|
938 |
ret = ReadFile(s->hfile, buf, count, &ret_count, &ov); |
939 |
if (!ret) {
|
940 |
ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE); |
941 |
if (!ret)
|
942 |
return -EIO;
|
943 |
else
|
944 |
return ret_count;
|
945 |
} |
946 |
return ret_count;
|
947 |
} |
948 |
|
949 |
static int raw_pwrite(BlockDriverState *bs, int64_t offset, |
950 |
const uint8_t *buf, int count) |
951 |
{ |
952 |
BDRVRawState *s = bs->opaque; |
953 |
OVERLAPPED ov; |
954 |
DWORD ret_count; |
955 |
int ret;
|
956 |
|
957 |
memset(&ov, 0, sizeof(ov)); |
958 |
ov.Offset = offset; |
959 |
ov.OffsetHigh = offset >> 32;
|
960 |
ret = WriteFile(s->hfile, buf, count, &ret_count, &ov); |
961 |
if (!ret) {
|
962 |
ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE); |
963 |
if (!ret)
|
964 |
return -EIO;
|
965 |
else
|
966 |
return ret_count;
|
967 |
} |
968 |
return ret_count;
|
969 |
} |
970 |
|
971 |
#if 0
|
972 |
#ifndef QEMU_TOOL
|
973 |
static void raw_aio_cb(void *opaque)
|
974 |
{
|
975 |
RawAIOCB *acb = opaque;
|
976 |
BlockDriverState *bs = acb->common.bs;
|
977 |
BDRVRawState *s = bs->opaque;
|
978 |
DWORD ret_count;
|
979 |
int ret;
|
980 |
|
981 |
ret = GetOverlappedResult(s->hfile, &acb->ov, &ret_count, TRUE);
|
982 |
if (!ret || ret_count != acb->count) {
|
983 |
acb->common.cb(acb->common.opaque, -EIO);
|
984 |
} else {
|
985 |
acb->common.cb(acb->common.opaque, 0);
|
986 |
}
|
987 |
}
|
988 |
#endif
|
989 |
|
990 |
static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
|
991 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
992 |
BlockDriverCompletionFunc *cb, void *opaque)
|
993 |
{ |
994 |
RawAIOCB *acb; |
995 |
int64_t offset; |
996 |
|
997 |
acb = qemu_aio_get(bs, cb, opaque); |
998 |
if (acb->hEvent) {
|
999 |
acb->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); |
1000 |
if (!acb->hEvent) {
|
1001 |
qemu_aio_release(acb); |
1002 |
return NULL; |
1003 |
} |
1004 |
} |
1005 |
memset(&acb->ov, 0, sizeof(acb->ov)); |
1006 |
offset = sector_num * 512;
|
1007 |
acb->ov.Offset = offset; |
1008 |
acb->ov.OffsetHigh = offset >> 32;
|
1009 |
acb->ov.hEvent = acb->hEvent; |
1010 |
acb->count = nb_sectors * 512;
|
1011 |
#ifndef QEMU_TOOL
|
1012 |
qemu_add_wait_object(acb->ov.hEvent, raw_aio_cb, acb); |
1013 |
#endif
|
1014 |
return acb;
|
1015 |
} |
1016 |
|
1017 |
static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
|
1018 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
1019 |
BlockDriverCompletionFunc *cb, void *opaque)
|
1020 |
{ |
1021 |
BDRVRawState *s = bs->opaque; |
1022 |
RawAIOCB *acb; |
1023 |
int ret;
|
1024 |
|
1025 |
acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
1026 |
if (!acb)
|
1027 |
return NULL; |
1028 |
ret = ReadFile(s->hfile, buf, acb->count, NULL, &acb->ov);
|
1029 |
if (!ret) {
|
1030 |
qemu_aio_release(acb); |
1031 |
return NULL; |
1032 |
} |
1033 |
#ifdef QEMU_TOOL
|
1034 |
qemu_aio_release(acb); |
1035 |
#endif
|
1036 |
return (BlockDriverAIOCB *)acb;
|
1037 |
} |
1038 |
|
1039 |
static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
|
1040 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
1041 |
BlockDriverCompletionFunc *cb, void *opaque)
|
1042 |
{ |
1043 |
BDRVRawState *s = bs->opaque; |
1044 |
RawAIOCB *acb; |
1045 |
int ret;
|
1046 |
|
1047 |
acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
1048 |
if (!acb)
|
1049 |
return NULL; |
1050 |
ret = WriteFile(s->hfile, buf, acb->count, NULL, &acb->ov);
|
1051 |
if (!ret) {
|
1052 |
qemu_aio_release(acb); |
1053 |
return NULL; |
1054 |
} |
1055 |
#ifdef QEMU_TOOL
|
1056 |
qemu_aio_release(acb); |
1057 |
#endif
|
1058 |
return (BlockDriverAIOCB *)acb;
|
1059 |
} |
1060 |
|
1061 |
static void raw_aio_cancel(BlockDriverAIOCB *blockacb) |
1062 |
{ |
1063 |
#ifndef QEMU_TOOL
|
1064 |
RawAIOCB *acb = (RawAIOCB *)blockacb; |
1065 |
BlockDriverState *bs = acb->common.bs; |
1066 |
BDRVRawState *s = bs->opaque; |
1067 |
|
1068 |
qemu_del_wait_object(acb->ov.hEvent, raw_aio_cb, acb); |
1069 |
/* XXX: if more than one async I/O it is not correct */
|
1070 |
CancelIo(s->hfile); |
1071 |
qemu_aio_release(acb); |
1072 |
#endif
|
1073 |
} |
1074 |
#endif /* #if 0 */ |
1075 |
|
1076 |
static void raw_flush(BlockDriverState *bs) |
1077 |
{ |
1078 |
BDRVRawState *s = bs->opaque; |
1079 |
FlushFileBuffers(s->hfile); |
1080 |
} |
1081 |
|
1082 |
static void raw_close(BlockDriverState *bs) |
1083 |
{ |
1084 |
BDRVRawState *s = bs->opaque; |
1085 |
CloseHandle(s->hfile); |
1086 |
} |
1087 |
|
1088 |
static int raw_truncate(BlockDriverState *bs, int64_t offset) |
1089 |
{ |
1090 |
BDRVRawState *s = bs->opaque; |
1091 |
DWORD low, high; |
1092 |
|
1093 |
low = offset; |
1094 |
high = offset >> 32;
|
1095 |
if (!SetFilePointer(s->hfile, low, &high, FILE_BEGIN))
|
1096 |
return -EIO;
|
1097 |
if (!SetEndOfFile(s->hfile))
|
1098 |
return -EIO;
|
1099 |
return 0; |
1100 |
} |
1101 |
|
1102 |
static int64_t raw_getlength(BlockDriverState *bs)
|
1103 |
{ |
1104 |
BDRVRawState *s = bs->opaque; |
1105 |
LARGE_INTEGER l; |
1106 |
ULARGE_INTEGER available, total, total_free; |
1107 |
DISK_GEOMETRY dg; |
1108 |
DWORD count; |
1109 |
BOOL status; |
1110 |
|
1111 |
switch(s->type) {
|
1112 |
case FTYPE_FILE:
|
1113 |
l.LowPart = GetFileSize(s->hfile, &l.HighPart); |
1114 |
if (l.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR) |
1115 |
return -EIO;
|
1116 |
break;
|
1117 |
case FTYPE_CD:
|
1118 |
if (!GetDiskFreeSpaceEx(s->drive_path, &available, &total, &total_free))
|
1119 |
return -EIO;
|
1120 |
l.QuadPart = total.QuadPart; |
1121 |
break;
|
1122 |
case FTYPE_HARDDISK:
|
1123 |
status = DeviceIoControl(s->hfile, IOCTL_DISK_GET_DRIVE_GEOMETRY, |
1124 |
NULL, 0, &dg, sizeof(dg), &count, NULL); |
1125 |
if (status != FALSE) {
|
1126 |
l.QuadPart = dg.Cylinders.QuadPart * dg.TracksPerCylinder |
1127 |
* dg.SectorsPerTrack * dg.BytesPerSector; |
1128 |
} |
1129 |
break;
|
1130 |
default:
|
1131 |
return -EIO;
|
1132 |
} |
1133 |
return l.QuadPart;
|
1134 |
} |
1135 |
|
1136 |
static int raw_create(const char *filename, int64_t total_size, |
1137 |
const char *backing_file, int flags) |
1138 |
{ |
1139 |
int fd;
|
1140 |
|
1141 |
if (flags || backing_file)
|
1142 |
return -ENOTSUP;
|
1143 |
|
1144 |
fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
1145 |
0644);
|
1146 |
if (fd < 0) |
1147 |
return -EIO;
|
1148 |
set_sparse(fd); |
1149 |
ftruncate(fd, total_size * 512);
|
1150 |
close(fd); |
1151 |
return 0; |
1152 |
} |
1153 |
|
1154 |
void qemu_aio_init(void) |
1155 |
{ |
1156 |
} |
1157 |
|
1158 |
void qemu_aio_poll(void) |
1159 |
{ |
1160 |
} |
1161 |
|
1162 |
void qemu_aio_flush(void) |
1163 |
{ |
1164 |
} |
1165 |
|
1166 |
void qemu_aio_wait_start(void) |
1167 |
{ |
1168 |
} |
1169 |
|
1170 |
void qemu_aio_wait(void) |
1171 |
{ |
1172 |
#ifndef QEMU_TOOL
|
1173 |
qemu_bh_poll(); |
1174 |
#endif
|
1175 |
} |
1176 |
|
1177 |
void qemu_aio_wait_end(void) |
1178 |
{ |
1179 |
} |
1180 |
|
1181 |
BlockDriver bdrv_raw = { |
1182 |
"raw",
|
1183 |
sizeof(BDRVRawState),
|
1184 |
NULL, /* no probe for protocols */ |
1185 |
raw_open, |
1186 |
NULL,
|
1187 |
NULL,
|
1188 |
raw_close, |
1189 |
raw_create, |
1190 |
raw_flush, |
1191 |
|
1192 |
#if 0
|
1193 |
.bdrv_aio_read = raw_aio_read,
|
1194 |
.bdrv_aio_write = raw_aio_write,
|
1195 |
.bdrv_aio_cancel = raw_aio_cancel,
|
1196 |
.aiocb_size = sizeof(RawAIOCB);
|
1197 |
#endif
|
1198 |
.protocol_name = "file",
|
1199 |
.bdrv_pread = raw_pread, |
1200 |
.bdrv_pwrite = raw_pwrite, |
1201 |
.bdrv_truncate = raw_truncate, |
1202 |
.bdrv_getlength = raw_getlength, |
1203 |
}; |
1204 |
|
1205 |
/***********************************************/
|
1206 |
/* host device */
|
1207 |
|
1208 |
static int find_cdrom(char *cdrom_name, int cdrom_name_size) |
1209 |
{ |
1210 |
char drives[256], *pdrv = drives; |
1211 |
UINT type; |
1212 |
|
1213 |
memset(drives, 0, sizeof(drives)); |
1214 |
GetLogicalDriveStrings(sizeof(drives), drives);
|
1215 |
while(pdrv[0] != '\0') { |
1216 |
type = GetDriveType(pdrv); |
1217 |
switch(type) {
|
1218 |
case DRIVE_CDROM:
|
1219 |
snprintf(cdrom_name, cdrom_name_size, "\\\\.\\%c:", pdrv[0]); |
1220 |
return 0; |
1221 |
break;
|
1222 |
} |
1223 |
pdrv += lstrlen(pdrv) + 1;
|
1224 |
} |
1225 |
return -1; |
1226 |
} |
1227 |
|
1228 |
static int find_device_type(BlockDriverState *bs, const char *filename) |
1229 |
{ |
1230 |
BDRVRawState *s = bs->opaque; |
1231 |
UINT type; |
1232 |
const char *p; |
1233 |
|
1234 |
if (strstart(filename, "\\\\.\\", &p) || |
1235 |
strstart(filename, "//./", &p)) {
|
1236 |
if (stristart(p, "PhysicalDrive", NULL)) |
1237 |
return FTYPE_HARDDISK;
|
1238 |
snprintf(s->drive_path, sizeof(s->drive_path), "%c:\\", p[0]); |
1239 |
type = GetDriveType(s->drive_path); |
1240 |
if (type == DRIVE_CDROM)
|
1241 |
return FTYPE_CD;
|
1242 |
else
|
1243 |
return FTYPE_FILE;
|
1244 |
} else {
|
1245 |
return FTYPE_FILE;
|
1246 |
} |
1247 |
} |
1248 |
|
1249 |
static int hdev_open(BlockDriverState *bs, const char *filename, int flags) |
1250 |
{ |
1251 |
BDRVRawState *s = bs->opaque; |
1252 |
int access_flags, create_flags;
|
1253 |
DWORD overlapped; |
1254 |
char device_name[64]; |
1255 |
|
1256 |
if (strstart(filename, "/dev/cdrom", NULL)) { |
1257 |
if (find_cdrom(device_name, sizeof(device_name)) < 0) |
1258 |
return -ENOENT;
|
1259 |
filename = device_name; |
1260 |
} else {
|
1261 |
/* transform drive letters into device name */
|
1262 |
if (((filename[0] >= 'a' && filename[0] <= 'z') || |
1263 |
(filename[0] >= 'A' && filename[0] <= 'Z')) && |
1264 |
filename[1] == ':' && filename[2] == '\0') { |
1265 |
snprintf(device_name, sizeof(device_name), "\\\\.\\%c:", filename[0]); |
1266 |
filename = device_name; |
1267 |
} |
1268 |
} |
1269 |
s->type = find_device_type(bs, filename); |
1270 |
|
1271 |
if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
1272 |
access_flags = GENERIC_READ | GENERIC_WRITE; |
1273 |
} else {
|
1274 |
access_flags = GENERIC_READ; |
1275 |
} |
1276 |
create_flags = OPEN_EXISTING; |
1277 |
|
1278 |
#ifdef QEMU_TOOL
|
1279 |
overlapped = FILE_ATTRIBUTE_NORMAL; |
1280 |
#else
|
1281 |
overlapped = FILE_FLAG_OVERLAPPED; |
1282 |
#endif
|
1283 |
s->hfile = CreateFile(filename, access_flags, |
1284 |
FILE_SHARE_READ, NULL,
|
1285 |
create_flags, overlapped, NULL);
|
1286 |
if (s->hfile == INVALID_HANDLE_VALUE) {
|
1287 |
int err = GetLastError();
|
1288 |
|
1289 |
if (err == ERROR_ACCESS_DENIED)
|
1290 |
return -EACCES;
|
1291 |
return -1; |
1292 |
} |
1293 |
return 0; |
1294 |
} |
1295 |
|
1296 |
#if 0
|
1297 |
/***********************************************/
|
1298 |
/* removable device additionnal commands */
|
1299 |
|
1300 |
static int raw_is_inserted(BlockDriverState *bs)
|
1301 |
{
|
1302 |
return 1;
|
1303 |
}
|
1304 |
|
1305 |
static int raw_media_changed(BlockDriverState *bs)
|
1306 |
{
|
1307 |
return -ENOTSUP;
|
1308 |
}
|
1309 |
|
1310 |
static int raw_eject(BlockDriverState *bs, int eject_flag)
|
1311 |
{
|
1312 |
DWORD ret_count;
|
1313 |
|
1314 |
if (s->type == FTYPE_FILE)
|
1315 |
return -ENOTSUP;
|
1316 |
if (eject_flag) {
|
1317 |
DeviceIoControl(s->hfile, IOCTL_STORAGE_EJECT_MEDIA,
|
1318 |
NULL, 0, NULL, 0, &lpBytesReturned, NULL);
|
1319 |
} else {
|
1320 |
DeviceIoControl(s->hfile, IOCTL_STORAGE_LOAD_MEDIA,
|
1321 |
NULL, 0, NULL, 0, &lpBytesReturned, NULL);
|
1322 |
}
|
1323 |
}
|
1324 |
|
1325 |
static int raw_set_locked(BlockDriverState *bs, int locked)
|
1326 |
{
|
1327 |
return -ENOTSUP;
|
1328 |
}
|
1329 |
#endif
|
1330 |
|
1331 |
BlockDriver bdrv_host_device = { |
1332 |
"host_device",
|
1333 |
sizeof(BDRVRawState),
|
1334 |
NULL, /* no probe for protocols */ |
1335 |
hdev_open, |
1336 |
NULL,
|
1337 |
NULL,
|
1338 |
raw_close, |
1339 |
NULL,
|
1340 |
raw_flush, |
1341 |
|
1342 |
#if 0
|
1343 |
.bdrv_aio_read = raw_aio_read,
|
1344 |
.bdrv_aio_write = raw_aio_write,
|
1345 |
.bdrv_aio_cancel = raw_aio_cancel,
|
1346 |
.aiocb_size = sizeof(RawAIOCB);
|
1347 |
#endif
|
1348 |
.bdrv_pread = raw_pread, |
1349 |
.bdrv_pwrite = raw_pwrite, |
1350 |
.bdrv_getlength = raw_getlength, |
1351 |
}; |
1352 |
#endif /* _WIN32 */ |