2006-08-01 18:21:11 +02:00
|
|
|
/*
|
2007-12-15 18:28:36 +01:00
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|
|
* Block driver for RAW files (posix)
|
2007-09-16 23:08:06 +02:00
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|
*
|
2006-08-01 18:21:11 +02:00
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|
|
* Copyright (c) 2006 Fabrice Bellard
|
2007-09-16 23:08:06 +02:00
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*
|
2006-08-01 18:21:11 +02:00
|
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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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*/
|
2007-11-11 03:51:17 +01:00
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#include "qemu-common.h"
|
2007-11-17 18:14:51 +01:00
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|
|
#include "qemu-timer.h"
|
2008-09-10 17:45:19 +02:00
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|
|
#include "qemu-char.h"
|
2009-07-20 19:19:25 +02:00
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|
|
#include "qemu-log.h"
|
2006-08-01 18:21:11 +02:00
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|
|
#include "block_int.h"
|
2009-05-10 00:03:42 +02:00
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|
|
#include "module.h"
|
2008-08-15 20:20:52 +02:00
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|
|
#ifdef CONFIG_AIO
|
2008-12-12 17:41:40 +01:00
|
|
|
#include "posix-aio-compat.h"
|
2008-08-15 20:20:52 +02:00
|
|
|
#endif
|
2006-08-01 18:21:11 +02:00
|
|
|
|
|
|
|
#ifdef CONFIG_COCOA
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|
|
|
#include <paths.h>
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|
|
|
#include <sys/param.h>
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|
|
|
#include <IOKit/IOKitLib.h>
|
|
|
|
#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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|
|
|
|
|
|
|
#ifdef __sun__
|
2007-01-05 18:44:41 +01:00
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|
|
#define _POSIX_PTHREAD_SEMANTICS 1
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|
|
#include <signal.h>
|
2006-08-01 18:21:11 +02:00
|
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|
#include <sys/dkio.h>
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|
|
|
#endif
|
2006-08-19 13:45:59 +02:00
|
|
|
#ifdef __linux__
|
|
|
|
#include <sys/ioctl.h>
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|
|
|
#include <linux/cdrom.h>
|
|
|
|
#include <linux/fd.h>
|
|
|
|
#endif
|
2006-12-21 20:14:11 +01:00
|
|
|
#ifdef __FreeBSD__
|
2008-08-24 12:43:12 +02:00
|
|
|
#include <signal.h>
|
2006-12-21 20:14:11 +01:00
|
|
|
#include <sys/disk.h>
|
2009-03-28 09:37:13 +01:00
|
|
|
#include <sys/cdio.h>
|
2006-12-21 20:14:11 +01:00
|
|
|
#endif
|
2006-08-01 18:21:11 +02:00
|
|
|
|
2008-08-15 20:33:42 +02:00
|
|
|
#ifdef __OpenBSD__
|
|
|
|
#include <sys/ioctl.h>
|
|
|
|
#include <sys/disklabel.h>
|
|
|
|
#include <sys/dkio.h>
|
|
|
|
#endif
|
|
|
|
|
2009-03-07 21:06:23 +01:00
|
|
|
#ifdef __DragonFly__
|
|
|
|
#include <sys/ioctl.h>
|
|
|
|
#include <sys/diskslice.h>
|
|
|
|
#endif
|
|
|
|
|
2006-08-19 13:45:59 +02:00
|
|
|
//#define DEBUG_FLOPPY
|
2006-08-01 18:21:11 +02:00
|
|
|
|
2007-11-11 03:51:17 +01:00
|
|
|
//#define DEBUG_BLOCK
|
2008-09-15 17:51:35 +02:00
|
|
|
#if defined(DEBUG_BLOCK)
|
2009-05-13 19:53:17 +02:00
|
|
|
#define DEBUG_BLOCK_PRINT(formatCstr, ...) do { if (qemu_log_enabled()) \
|
|
|
|
{ qemu_log(formatCstr, ## __VA_ARGS__); qemu_log_flush(); } } while (0)
|
2007-09-13 14:29:23 +02:00
|
|
|
#else
|
2009-05-13 19:53:17 +02:00
|
|
|
#define DEBUG_BLOCK_PRINT(formatCstr, ...)
|
2007-09-13 14:29:23 +02:00
|
|
|
#endif
|
|
|
|
|
2008-10-14 20:00:38 +02:00
|
|
|
/* OS X does not have O_DSYNC */
|
|
|
|
#ifndef O_DSYNC
|
2009-07-01 19:28:32 +02:00
|
|
|
#ifdef O_SYNC
|
2008-10-14 20:14:47 +02:00
|
|
|
#define O_DSYNC O_SYNC
|
2009-07-01 19:28:32 +02:00
|
|
|
#elif defined(O_FSYNC)
|
|
|
|
#define O_DSYNC O_FSYNC
|
|
|
|
#endif
|
2008-10-14 20:00:38 +02:00
|
|
|
#endif
|
|
|
|
|
2008-10-14 16:42:54 +02:00
|
|
|
/* Approximate O_DIRECT with O_DSYNC if O_DIRECT isn't available */
|
|
|
|
#ifndef O_DIRECT
|
|
|
|
#define O_DIRECT O_DSYNC
|
|
|
|
#endif
|
|
|
|
|
2006-08-19 13:45:59 +02:00
|
|
|
#define FTYPE_FILE 0
|
|
|
|
#define FTYPE_CD 1
|
|
|
|
#define FTYPE_FD 2
|
2006-08-01 18:21:11 +02:00
|
|
|
|
2008-05-28 11:51:09 +02:00
|
|
|
#define ALIGNED_BUFFER_SIZE (32 * 512)
|
|
|
|
|
2006-08-19 13:45:59 +02:00
|
|
|
/* if the FD is not accessed during that time (in ms), we try to
|
|
|
|
reopen it to see if the disk has been changed */
|
|
|
|
#define FD_OPEN_TIMEOUT 1000
|
2006-08-01 18:21:11 +02:00
|
|
|
|
2006-08-19 13:45:59 +02:00
|
|
|
typedef struct BDRVRawState {
|
|
|
|
int fd;
|
|
|
|
int type;
|
2007-09-13 14:29:23 +02:00
|
|
|
unsigned int lseek_err_cnt;
|
2009-06-15 13:53:26 +02:00
|
|
|
int open_flags;
|
2006-08-19 13:45:59 +02:00
|
|
|
#if defined(__linux__)
|
|
|
|
/* linux floppy specific */
|
|
|
|
int64_t fd_open_time;
|
|
|
|
int64_t fd_error_time;
|
|
|
|
int fd_got_error;
|
|
|
|
int fd_media_changed;
|
2006-08-01 18:21:11 +02:00
|
|
|
#endif
|
2008-05-28 11:51:09 +02:00
|
|
|
uint8_t* aligned_buf;
|
2006-08-19 13:45:59 +02:00
|
|
|
} BDRVRawState;
|
|
|
|
|
2008-09-22 21:17:18 +02:00
|
|
|
static int posix_aio_init(void);
|
|
|
|
|
2006-08-19 13:45:59 +02:00
|
|
|
static int fd_open(BlockDriverState *bs);
|
2009-06-26 19:51:24 +02:00
|
|
|
static int64_t raw_getlength(BlockDriverState *bs);
|
2006-08-01 18:21:11 +02:00
|
|
|
|
2009-03-28 09:37:13 +01:00
|
|
|
#if defined(__FreeBSD__)
|
2009-06-15 13:55:19 +02:00
|
|
|
static int cdrom_reopen(BlockDriverState *bs);
|
2009-03-28 09:37:13 +01:00
|
|
|
#endif
|
|
|
|
|
2009-06-15 13:53:38 +02:00
|
|
|
static int raw_open_common(BlockDriverState *bs, const char *filename,
|
2009-06-17 17:27:44 +02:00
|
|
|
int bdrv_flags, int open_flags)
|
2006-08-01 18:21:11 +02:00
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
2009-06-15 13:53:26 +02:00
|
|
|
int fd, ret;
|
2006-08-01 18:21:11 +02:00
|
|
|
|
2008-09-22 21:17:18 +02:00
|
|
|
posix_aio_init();
|
|
|
|
|
2007-09-13 14:29:23 +02:00
|
|
|
s->lseek_err_cnt = 0;
|
|
|
|
|
2009-06-17 17:27:44 +02:00
|
|
|
s->open_flags = open_flags | O_BINARY;
|
2009-06-16 15:21:09 +02:00
|
|
|
s->open_flags &= ~O_ACCMODE;
|
2009-06-17 17:27:44 +02:00
|
|
|
if ((bdrv_flags & BDRV_O_ACCESS) == BDRV_O_RDWR) {
|
2009-06-15 13:53:26 +02:00
|
|
|
s->open_flags |= O_RDWR;
|
2006-08-01 18:21:11 +02:00
|
|
|
} else {
|
2009-06-15 13:53:26 +02:00
|
|
|
s->open_flags |= O_RDONLY;
|
2006-08-01 18:21:11 +02:00
|
|
|
bs->read_only = 1;
|
|
|
|
}
|
2008-10-14 16:42:54 +02:00
|
|
|
|
|
|
|
/* Use O_DSYNC for write-through caching, no flags for write-back caching,
|
|
|
|
* and O_DIRECT for no caching. */
|
2009-06-17 17:27:44 +02:00
|
|
|
if ((bdrv_flags & BDRV_O_NOCACHE))
|
2009-06-15 13:53:26 +02:00
|
|
|
s->open_flags |= O_DIRECT;
|
2009-06-17 17:27:44 +02:00
|
|
|
else if (!(bdrv_flags & BDRV_O_CACHE_WB))
|
2009-06-15 13:53:26 +02:00
|
|
|
s->open_flags |= O_DSYNC;
|
2006-08-01 18:21:11 +02:00
|
|
|
|
2009-06-15 13:53:38 +02:00
|
|
|
s->fd = -1;
|
2009-06-15 13:53:26 +02:00
|
|
|
fd = open(filename, s->open_flags, 0644);
|
2006-08-19 13:45:59 +02:00
|
|
|
if (fd < 0) {
|
|
|
|
ret = -errno;
|
|
|
|
if (ret == -EROFS)
|
|
|
|
ret = -EACCES;
|
|
|
|
return ret;
|
|
|
|
}
|
2006-08-01 18:21:11 +02:00
|
|
|
s->fd = fd;
|
2008-05-28 11:51:09 +02:00
|
|
|
s->aligned_buf = NULL;
|
2009-06-17 17:27:44 +02:00
|
|
|
if ((bdrv_flags & BDRV_O_NOCACHE)) {
|
2009-04-22 22:20:00 +02:00
|
|
|
s->aligned_buf = qemu_blockalign(bs, ALIGNED_BUFFER_SIZE);
|
2008-05-28 11:51:09 +02:00
|
|
|
if (s->aligned_buf == NULL) {
|
|
|
|
ret = -errno;
|
|
|
|
close(fd);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
}
|
2006-08-01 18:21:11 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-06-15 13:53:38 +02:00
|
|
|
static int raw_open(BlockDriverState *bs, const char *filename, int flags)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
2009-06-17 17:27:44 +02:00
|
|
|
int open_flags = 0;
|
2009-06-15 13:53:38 +02:00
|
|
|
|
|
|
|
s->type = FTYPE_FILE;
|
|
|
|
if (flags & BDRV_O_CREAT)
|
2009-06-17 17:27:44 +02:00
|
|
|
open_flags = O_CREAT | O_TRUNC;
|
2009-06-15 13:53:38 +02:00
|
|
|
|
2009-06-17 17:27:44 +02:00
|
|
|
return raw_open_common(bs, filename, flags, open_flags);
|
2009-06-15 13:53:38 +02:00
|
|
|
}
|
|
|
|
|
2006-08-01 18:21:11 +02:00
|
|
|
/* XXX: use host sector size if necessary with:
|
|
|
|
#ifdef DIOCGSECTORSIZE
|
|
|
|
{
|
|
|
|
unsigned int sectorsize = 512;
|
|
|
|
if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) &&
|
|
|
|
sectorsize > bufsize)
|
|
|
|
bufsize = sectorsize;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_COCOA
|
|
|
|
u_int32_t blockSize = 512;
|
|
|
|
if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) {
|
|
|
|
bufsize = blockSize;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
*/
|
|
|
|
|
2008-05-28 11:51:09 +02:00
|
|
|
/*
|
|
|
|
* offset and count are in bytes, but must be multiples of 512 for files
|
|
|
|
* opened with O_DIRECT. buf must be aligned to 512 bytes then.
|
|
|
|
*
|
|
|
|
* This function may be called without alignment if the caller ensures
|
|
|
|
* that O_DIRECT is not in effect.
|
|
|
|
*/
|
|
|
|
static int raw_pread_aligned(BlockDriverState *bs, int64_t offset,
|
2006-08-01 18:21:11 +02:00
|
|
|
uint8_t *buf, int count)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
int ret;
|
2007-09-17 10:09:54 +02:00
|
|
|
|
2006-08-19 13:45:59 +02:00
|
|
|
ret = fd_open(bs);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
|
2007-12-24 17:10:43 +01:00
|
|
|
if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) {
|
2007-09-13 14:29:23 +02:00
|
|
|
++(s->lseek_err_cnt);
|
|
|
|
if(s->lseek_err_cnt <= 10) {
|
2007-09-21 08:09:39 +02:00
|
|
|
DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
|
|
|
|
"] lseek failed : %d = %s\n",
|
2007-09-13 14:29:23 +02:00
|
|
|
s->fd, bs->filename, offset, buf, count,
|
|
|
|
bs->total_sectors, errno, strerror(errno));
|
|
|
|
}
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
s->lseek_err_cnt=0;
|
|
|
|
|
2006-08-01 18:21:11 +02:00
|
|
|
ret = read(s->fd, buf, count);
|
2007-09-13 14:29:23 +02:00
|
|
|
if (ret == count)
|
|
|
|
goto label__raw_read__success;
|
|
|
|
|
2009-06-26 19:51:24 +02:00
|
|
|
/* Allow reads beyond the end (needed for pwrite) */
|
|
|
|
if ((ret == 0) && bs->growable) {
|
|
|
|
int64_t size = raw_getlength(bs);
|
|
|
|
if (offset >= size) {
|
|
|
|
memset(buf, 0, count);
|
|
|
|
ret = count;
|
|
|
|
goto label__raw_read__success;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2007-09-21 08:09:39 +02:00
|
|
|
DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
|
|
|
|
"] read failed %d : %d = %s\n",
|
2007-09-13 14:29:23 +02:00
|
|
|
s->fd, bs->filename, offset, buf, count,
|
|
|
|
bs->total_sectors, ret, errno, strerror(errno));
|
|
|
|
|
|
|
|
/* Try harder for CDrom. */
|
|
|
|
if (bs->type == BDRV_TYPE_CDROM) {
|
|
|
|
lseek(s->fd, offset, SEEK_SET);
|
|
|
|
ret = read(s->fd, buf, count);
|
|
|
|
if (ret == count)
|
|
|
|
goto label__raw_read__success;
|
|
|
|
lseek(s->fd, offset, SEEK_SET);
|
|
|
|
ret = read(s->fd, buf, count);
|
|
|
|
if (ret == count)
|
|
|
|
goto label__raw_read__success;
|
|
|
|
|
2007-09-21 08:09:39 +02:00
|
|
|
DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
|
|
|
|
"] retry read failed %d : %d = %s\n",
|
2007-09-13 14:29:23 +02:00
|
|
|
s->fd, bs->filename, offset, buf, count,
|
|
|
|
bs->total_sectors, ret, errno, strerror(errno));
|
|
|
|
}
|
|
|
|
|
|
|
|
label__raw_read__success:
|
|
|
|
|
2009-05-25 10:08:52 +02:00
|
|
|
return (ret < 0) ? -errno : ret;
|
2006-08-01 18:21:11 +02:00
|
|
|
}
|
|
|
|
|
2008-05-28 11:51:09 +02:00
|
|
|
/*
|
|
|
|
* offset and count are in bytes, but must be multiples of 512 for files
|
|
|
|
* opened with O_DIRECT. buf must be aligned to 512 bytes then.
|
|
|
|
*
|
|
|
|
* This function may be called without alignment if the caller ensures
|
|
|
|
* that O_DIRECT is not in effect.
|
|
|
|
*/
|
|
|
|
static int raw_pwrite_aligned(BlockDriverState *bs, int64_t offset,
|
2006-08-01 18:21:11 +02:00
|
|
|
const uint8_t *buf, int count)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
int ret;
|
2007-09-17 10:09:54 +02:00
|
|
|
|
2006-08-19 13:45:59 +02:00
|
|
|
ret = fd_open(bs);
|
|
|
|
if (ret < 0)
|
2009-01-15 21:44:26 +01:00
|
|
|
return -errno;
|
2006-08-19 13:45:59 +02:00
|
|
|
|
2007-12-24 17:10:43 +01:00
|
|
|
if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) {
|
2007-09-13 14:29:23 +02:00
|
|
|
++(s->lseek_err_cnt);
|
|
|
|
if(s->lseek_err_cnt) {
|
2007-09-21 08:09:39 +02:00
|
|
|
DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%"
|
|
|
|
PRId64 "] lseek failed : %d = %s\n",
|
2007-09-13 14:29:23 +02:00
|
|
|
s->fd, bs->filename, offset, buf, count,
|
|
|
|
bs->total_sectors, errno, strerror(errno));
|
|
|
|
}
|
2009-01-15 21:44:26 +01:00
|
|
|
return -EIO;
|
2007-09-13 14:29:23 +02:00
|
|
|
}
|
|
|
|
s->lseek_err_cnt = 0;
|
|
|
|
|
2006-08-01 18:21:11 +02:00
|
|
|
ret = write(s->fd, buf, count);
|
2007-09-13 14:29:23 +02:00
|
|
|
if (ret == count)
|
|
|
|
goto label__raw_write__success;
|
|
|
|
|
2007-09-21 08:09:39 +02:00
|
|
|
DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
|
|
|
|
"] write failed %d : %d = %s\n",
|
2007-09-13 14:29:23 +02:00
|
|
|
s->fd, bs->filename, offset, buf, count,
|
|
|
|
bs->total_sectors, ret, errno, strerror(errno));
|
|
|
|
|
|
|
|
label__raw_write__success:
|
|
|
|
|
2009-01-15 21:44:26 +01:00
|
|
|
return (ret < 0) ? -errno : ret;
|
2006-08-01 18:21:11 +02:00
|
|
|
}
|
|
|
|
|
2008-05-28 11:51:09 +02:00
|
|
|
|
|
|
|
/*
|
|
|
|
* offset and count are in bytes and possibly not aligned. For files opened
|
|
|
|
* with O_DIRECT, necessary alignments are ensured before calling
|
|
|
|
* raw_pread_aligned to do the actual read.
|
|
|
|
*/
|
|
|
|
static int raw_pread(BlockDriverState *bs, int64_t offset,
|
|
|
|
uint8_t *buf, int count)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
int size, ret, shift, sum;
|
|
|
|
|
|
|
|
sum = 0;
|
|
|
|
|
|
|
|
if (s->aligned_buf != NULL) {
|
|
|
|
|
|
|
|
if (offset & 0x1ff) {
|
|
|
|
/* align offset on a 512 bytes boundary */
|
|
|
|
|
|
|
|
shift = offset & 0x1ff;
|
|
|
|
size = (shift + count + 0x1ff) & ~0x1ff;
|
|
|
|
if (size > ALIGNED_BUFFER_SIZE)
|
|
|
|
size = ALIGNED_BUFFER_SIZE;
|
|
|
|
ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, size);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
size = 512 - shift;
|
|
|
|
if (size > count)
|
|
|
|
size = count;
|
|
|
|
memcpy(buf, s->aligned_buf + shift, size);
|
|
|
|
|
|
|
|
buf += size;
|
|
|
|
offset += size;
|
|
|
|
count -= size;
|
|
|
|
sum += size;
|
|
|
|
|
|
|
|
if (count == 0)
|
|
|
|
return sum;
|
|
|
|
}
|
|
|
|
if (count & 0x1ff || (uintptr_t) buf & 0x1ff) {
|
|
|
|
|
|
|
|
/* read on aligned buffer */
|
|
|
|
|
|
|
|
while (count) {
|
|
|
|
|
|
|
|
size = (count + 0x1ff) & ~0x1ff;
|
|
|
|
if (size > ALIGNED_BUFFER_SIZE)
|
|
|
|
size = ALIGNED_BUFFER_SIZE;
|
|
|
|
|
|
|
|
ret = raw_pread_aligned(bs, offset, s->aligned_buf, size);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
size = ret;
|
|
|
|
if (size > count)
|
|
|
|
size = count;
|
|
|
|
|
|
|
|
memcpy(buf, s->aligned_buf, size);
|
|
|
|
|
|
|
|
buf += size;
|
|
|
|
offset += size;
|
|
|
|
count -= size;
|
|
|
|
sum += size;
|
|
|
|
}
|
|
|
|
|
|
|
|
return sum;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return raw_pread_aligned(bs, offset, buf, count) + sum;
|
|
|
|
}
|
|
|
|
|
2009-03-12 20:57:16 +01:00
|
|
|
static int raw_read(BlockDriverState *bs, int64_t sector_num,
|
|
|
|
uint8_t *buf, int nb_sectors)
|
|
|
|
{
|
2009-03-13 04:12:03 +01:00
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = raw_pread(bs, sector_num * 512, buf, nb_sectors * 512);
|
|
|
|
if (ret == (nb_sectors * 512))
|
|
|
|
ret = 0;
|
|
|
|
return ret;
|
2009-03-12 20:57:16 +01:00
|
|
|
}
|
|
|
|
|
2008-05-28 11:51:09 +02:00
|
|
|
/*
|
|
|
|
* offset and count are in bytes and possibly not aligned. For files opened
|
|
|
|
* with O_DIRECT, necessary alignments are ensured before calling
|
|
|
|
* raw_pwrite_aligned to do the actual write.
|
|
|
|
*/
|
|
|
|
static int raw_pwrite(BlockDriverState *bs, int64_t offset,
|
|
|
|
const uint8_t *buf, int count)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
int size, ret, shift, sum;
|
|
|
|
|
|
|
|
sum = 0;
|
|
|
|
|
|
|
|
if (s->aligned_buf != NULL) {
|
|
|
|
|
|
|
|
if (offset & 0x1ff) {
|
|
|
|
/* align offset on a 512 bytes boundary */
|
|
|
|
shift = offset & 0x1ff;
|
|
|
|
ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, 512);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
size = 512 - shift;
|
|
|
|
if (size > count)
|
|
|
|
size = count;
|
|
|
|
memcpy(s->aligned_buf + shift, buf, size);
|
|
|
|
|
|
|
|
ret = raw_pwrite_aligned(bs, offset - shift, s->aligned_buf, 512);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
buf += size;
|
|
|
|
offset += size;
|
|
|
|
count -= size;
|
|
|
|
sum += size;
|
|
|
|
|
|
|
|
if (count == 0)
|
|
|
|
return sum;
|
|
|
|
}
|
|
|
|
if (count & 0x1ff || (uintptr_t) buf & 0x1ff) {
|
|
|
|
|
|
|
|
while ((size = (count & ~0x1ff)) != 0) {
|
|
|
|
|
|
|
|
if (size > ALIGNED_BUFFER_SIZE)
|
|
|
|
size = ALIGNED_BUFFER_SIZE;
|
|
|
|
|
|
|
|
memcpy(s->aligned_buf, buf, size);
|
|
|
|
|
|
|
|
ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, size);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
buf += ret;
|
|
|
|
offset += ret;
|
|
|
|
count -= ret;
|
|
|
|
sum += ret;
|
|
|
|
}
|
|
|
|
/* here, count < 512 because (count & ~0x1ff) == 0 */
|
|
|
|
if (count) {
|
|
|
|
ret = raw_pread_aligned(bs, offset, s->aligned_buf, 512);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
memcpy(s->aligned_buf, buf, count);
|
|
|
|
|
|
|
|
ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, 512);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
if (count < ret)
|
|
|
|
ret = count;
|
|
|
|
|
|
|
|
sum += ret;
|
|
|
|
}
|
|
|
|
return sum;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return raw_pwrite_aligned(bs, offset, buf, count) + sum;
|
|
|
|
}
|
|
|
|
|
2009-03-12 20:57:16 +01:00
|
|
|
static int raw_write(BlockDriverState *bs, int64_t sector_num,
|
|
|
|
const uint8_t *buf, int nb_sectors)
|
|
|
|
{
|
2009-03-13 04:12:03 +01:00
|
|
|
int ret;
|
|
|
|
ret = raw_pwrite(bs, sector_num * 512, buf, nb_sectors * 512);
|
|
|
|
if (ret == (nb_sectors * 512))
|
|
|
|
ret = 0;
|
|
|
|
return ret;
|
2009-03-12 20:57:16 +01:00
|
|
|
}
|
|
|
|
|
2008-08-15 20:20:52 +02:00
|
|
|
#ifdef CONFIG_AIO
|
2006-08-01 18:21:11 +02:00
|
|
|
/***********************************************************/
|
2006-08-19 13:45:59 +02:00
|
|
|
/* Unix AIO using POSIX AIO */
|
2006-08-01 18:21:11 +02:00
|
|
|
|
|
|
|
typedef struct RawAIOCB {
|
2006-08-07 04:38:06 +02:00
|
|
|
BlockDriverAIOCB common;
|
2008-12-12 17:41:40 +01:00
|
|
|
struct qemu_paiocb aiocb;
|
2006-08-07 04:38:06 +02:00
|
|
|
struct RawAIOCB *next;
|
2008-05-28 11:51:09 +02:00
|
|
|
int ret;
|
2006-08-01 18:21:11 +02:00
|
|
|
} RawAIOCB;
|
|
|
|
|
2008-09-22 21:17:18 +02:00
|
|
|
typedef struct PosixAioState
|
|
|
|
{
|
2008-10-08 21:50:24 +02:00
|
|
|
int rfd, wfd;
|
2008-09-22 21:17:18 +02:00
|
|
|
RawAIOCB *first_aio;
|
|
|
|
} PosixAioState;
|
2006-08-01 18:21:11 +02:00
|
|
|
|
2008-09-22 21:17:18 +02:00
|
|
|
static void posix_aio_read(void *opaque)
|
2006-08-01 18:21:11 +02:00
|
|
|
{
|
2008-09-22 21:17:18 +02:00
|
|
|
PosixAioState *s = opaque;
|
2006-08-07 04:38:06 +02:00
|
|
|
RawAIOCB *acb, **pacb;
|
2006-08-01 18:21:11 +02:00
|
|
|
int ret;
|
2008-10-08 21:50:24 +02:00
|
|
|
ssize_t len;
|
|
|
|
|
2008-11-13 20:23:17 +01:00
|
|
|
/* read all bytes from signal pipe */
|
|
|
|
for (;;) {
|
|
|
|
char bytes[16];
|
2008-10-08 21:50:24 +02:00
|
|
|
|
2008-11-13 20:23:17 +01:00
|
|
|
len = read(s->rfd, bytes, sizeof(bytes));
|
2008-09-11 16:32:27 +02:00
|
|
|
if (len == -1 && errno == EINTR)
|
2008-11-13 20:23:17 +01:00
|
|
|
continue; /* try again */
|
|
|
|
if (len == sizeof(bytes))
|
|
|
|
continue; /* more to read */
|
|
|
|
break;
|
|
|
|
}
|
2006-08-01 18:21:11 +02:00
|
|
|
|
|
|
|
for(;;) {
|
2008-09-22 21:17:18 +02:00
|
|
|
pacb = &s->first_aio;
|
2006-08-01 18:21:11 +02:00
|
|
|
for(;;) {
|
|
|
|
acb = *pacb;
|
|
|
|
if (!acb)
|
|
|
|
goto the_end;
|
2008-12-12 17:41:40 +01:00
|
|
|
ret = qemu_paio_error(&acb->aiocb);
|
2006-08-01 18:21:11 +02:00
|
|
|
if (ret == ECANCELED) {
|
|
|
|
/* remove the request */
|
2006-08-07 04:38:06 +02:00
|
|
|
*pacb = acb->next;
|
|
|
|
qemu_aio_release(acb);
|
2006-08-01 18:21:11 +02:00
|
|
|
} else if (ret != EINPROGRESS) {
|
|
|
|
/* end of aio */
|
|
|
|
if (ret == 0) {
|
2008-12-12 17:41:40 +01:00
|
|
|
ret = qemu_paio_return(&acb->aiocb);
|
2006-08-07 04:38:06 +02:00
|
|
|
if (ret == acb->aiocb.aio_nbytes)
|
2006-08-01 18:21:11 +02:00
|
|
|
ret = 0;
|
|
|
|
else
|
2006-08-19 13:45:59 +02:00
|
|
|
ret = -EINVAL;
|
2006-08-01 18:21:11 +02:00
|
|
|
} else {
|
|
|
|
ret = -ret;
|
|
|
|
}
|
|
|
|
/* remove the request */
|
2006-08-07 04:38:06 +02:00
|
|
|
*pacb = acb->next;
|
2006-08-01 18:21:11 +02:00
|
|
|
/* call the callback */
|
2006-08-07 04:38:06 +02:00
|
|
|
acb->common.cb(acb->common.opaque, ret);
|
|
|
|
qemu_aio_release(acb);
|
2006-08-01 18:21:11 +02:00
|
|
|
break;
|
|
|
|
} else {
|
2006-08-07 04:38:06 +02:00
|
|
|
pacb = &acb->next;
|
2006-08-01 18:21:11 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
the_end: ;
|
|
|
|
}
|
|
|
|
|
2008-09-22 21:17:18 +02:00
|
|
|
static int posix_aio_flush(void *opaque)
|
2008-09-10 17:45:19 +02:00
|
|
|
{
|
2008-09-22 21:17:18 +02:00
|
|
|
PosixAioState *s = opaque;
|
|
|
|
return !!s->first_aio;
|
|
|
|
}
|
|
|
|
|
|
|
|
static PosixAioState *posix_aio_state;
|
2008-09-10 17:45:19 +02:00
|
|
|
|
2008-10-08 21:50:24 +02:00
|
|
|
static void aio_signal_handler(int signum)
|
|
|
|
{
|
|
|
|
if (posix_aio_state) {
|
|
|
|
char byte = 0;
|
|
|
|
|
|
|
|
write(posix_aio_state->wfd, &byte, sizeof(byte));
|
|
|
|
}
|
|
|
|
|
|
|
|
qemu_service_io();
|
|
|
|
}
|
|
|
|
|
2008-09-22 21:17:18 +02:00
|
|
|
static int posix_aio_init(void)
|
|
|
|
{
|
2008-10-08 21:50:24 +02:00
|
|
|
struct sigaction act;
|
2008-09-22 21:17:18 +02:00
|
|
|
PosixAioState *s;
|
2008-10-08 21:50:24 +02:00
|
|
|
int fds[2];
|
2008-12-12 17:41:40 +01:00
|
|
|
struct qemu_paioinit ai;
|
2008-09-22 21:17:18 +02:00
|
|
|
|
|
|
|
if (posix_aio_state)
|
|
|
|
return 0;
|
2008-09-22 16:49:01 +02:00
|
|
|
|
2008-09-22 21:17:18 +02:00
|
|
|
s = qemu_malloc(sizeof(PosixAioState));
|
2008-09-10 17:45:19 +02:00
|
|
|
|
2008-10-08 21:50:24 +02:00
|
|
|
sigfillset(&act.sa_mask);
|
|
|
|
act.sa_flags = 0; /* do not restart syscalls to interrupt select() */
|
|
|
|
act.sa_handler = aio_signal_handler;
|
|
|
|
sigaction(SIGUSR2, &act, NULL);
|
|
|
|
|
2008-09-22 21:17:18 +02:00
|
|
|
s->first_aio = NULL;
|
2008-10-08 21:50:24 +02:00
|
|
|
if (pipe(fds) == -1) {
|
|
|
|
fprintf(stderr, "failed to create pipe\n");
|
2008-09-27 22:58:43 +02:00
|
|
|
return -errno;
|
|
|
|
}
|
2008-09-11 16:32:27 +02:00
|
|
|
|
2008-10-08 21:50:24 +02:00
|
|
|
s->rfd = fds[0];
|
|
|
|
s->wfd = fds[1];
|
|
|
|
|
2008-11-13 20:23:17 +01:00
|
|
|
fcntl(s->rfd, F_SETFL, O_NONBLOCK);
|
2008-10-08 21:50:24 +02:00
|
|
|
fcntl(s->wfd, F_SETFL, O_NONBLOCK);
|
2008-09-11 16:32:27 +02:00
|
|
|
|
2008-10-08 21:50:24 +02:00
|
|
|
qemu_aio_set_fd_handler(s->rfd, posix_aio_read, NULL, posix_aio_flush, s);
|
2008-09-10 17:45:19 +02:00
|
|
|
|
2008-12-12 17:41:40 +01:00
|
|
|
memset(&ai, 0, sizeof(ai));
|
|
|
|
ai.aio_threads = 64;
|
|
|
|
ai.aio_num = 64;
|
|
|
|
qemu_paio_init(&ai);
|
2008-09-26 18:12:14 +02:00
|
|
|
|
2008-09-22 21:17:18 +02:00
|
|
|
posix_aio_state = s;
|
2006-08-06 11:51:25 +02:00
|
|
|
|
2008-09-22 21:17:18 +02:00
|
|
|
return 0;
|
2006-08-01 18:21:11 +02:00
|
|
|
}
|
|
|
|
|
2009-05-25 12:37:32 +02:00
|
|
|
static void raw_aio_remove(RawAIOCB *acb)
|
|
|
|
{
|
|
|
|
RawAIOCB **pacb;
|
|
|
|
|
|
|
|
/* remove the callback from the queue */
|
|
|
|
pacb = &posix_aio_state->first_aio;
|
|
|
|
for(;;) {
|
|
|
|
if (*pacb == NULL) {
|
|
|
|
fprintf(stderr, "raw_aio_remove: aio request not found!\n");
|
|
|
|
break;
|
|
|
|
} else if (*pacb == acb) {
|
|
|
|
*pacb = acb->next;
|
|
|
|
qemu_aio_release(acb);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
pacb = &(*pacb)->next;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void raw_aio_cancel(BlockDriverAIOCB *blockacb)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
RawAIOCB *acb = (RawAIOCB *)blockacb;
|
|
|
|
|
|
|
|
ret = qemu_paio_cancel(acb->aiocb.aio_fildes, &acb->aiocb);
|
|
|
|
if (ret == QEMU_PAIO_NOTCANCELED) {
|
|
|
|
/* fail safe: if the aio could not be canceled, we wait for
|
|
|
|
it */
|
|
|
|
while (qemu_paio_error(&acb->aiocb) == EINPROGRESS);
|
|
|
|
}
|
|
|
|
|
|
|
|
raw_aio_remove(acb);
|
|
|
|
}
|
|
|
|
|
|
|
|
static AIOPool raw_aio_pool = {
|
|
|
|
.aiocb_size = sizeof(RawAIOCB),
|
|
|
|
.cancel = raw_aio_cancel,
|
|
|
|
};
|
|
|
|
|
2009-04-07 20:43:24 +02:00
|
|
|
static RawAIOCB *raw_aio_setup(BlockDriverState *bs, int64_t sector_num,
|
|
|
|
QEMUIOVector *qiov, int nb_sectors,
|
2006-08-07 04:38:06 +02:00
|
|
|
BlockDriverCompletionFunc *cb, void *opaque)
|
2006-08-01 18:21:11 +02:00
|
|
|
{
|
2006-08-07 04:38:06 +02:00
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
RawAIOCB *acb;
|
|
|
|
|
2006-08-19 13:45:59 +02:00
|
|
|
if (fd_open(bs) < 0)
|
|
|
|
return NULL;
|
|
|
|
|
2009-05-25 12:37:32 +02:00
|
|
|
acb = qemu_aio_get(&raw_aio_pool, bs, cb, opaque);
|
2006-08-07 04:38:06 +02:00
|
|
|
if (!acb)
|
|
|
|
return NULL;
|
2008-12-12 17:41:40 +01:00
|
|
|
acb->aiocb.aio_fildes = s->fd;
|
2009-01-24 12:54:21 +01:00
|
|
|
acb->aiocb.ev_signo = SIGUSR2;
|
2009-04-07 20:43:24 +02:00
|
|
|
acb->aiocb.aio_iov = qiov->iov;
|
|
|
|
acb->aiocb.aio_niov = qiov->niov;
|
|
|
|
acb->aiocb.aio_nbytes = nb_sectors * 512;
|
2006-08-07 04:38:06 +02:00
|
|
|
acb->aiocb.aio_offset = sector_num * 512;
|
2009-04-07 20:43:24 +02:00
|
|
|
acb->aiocb.aio_flags = 0;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If O_DIRECT is used the buffer needs to be aligned on a sector
|
|
|
|
* boundary. Tell the low level code to ensure that in case it's
|
|
|
|
* not done yet.
|
|
|
|
*/
|
|
|
|
if (s->aligned_buf)
|
|
|
|
acb->aiocb.aio_flags |= QEMU_AIO_SECTOR_ALIGNED;
|
|
|
|
|
2008-09-22 21:17:18 +02:00
|
|
|
acb->next = posix_aio_state->first_aio;
|
|
|
|
posix_aio_state->first_aio = acb;
|
2006-08-07 04:38:06 +02:00
|
|
|
return acb;
|
2006-08-01 18:21:11 +02:00
|
|
|
}
|
|
|
|
|
2009-04-07 20:43:24 +02:00
|
|
|
static BlockDriverAIOCB *raw_aio_readv(BlockDriverState *bs,
|
|
|
|
int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
|
2006-08-07 04:38:06 +02:00
|
|
|
BlockDriverCompletionFunc *cb, void *opaque)
|
2006-08-01 18:21:11 +02:00
|
|
|
{
|
2006-08-07 04:38:06 +02:00
|
|
|
RawAIOCB *acb;
|
2006-08-01 18:21:11 +02:00
|
|
|
|
2009-04-07 20:43:24 +02:00
|
|
|
acb = raw_aio_setup(bs, sector_num, qiov, nb_sectors, cb, opaque);
|
2006-08-07 04:38:06 +02:00
|
|
|
if (!acb)
|
|
|
|
return NULL;
|
2008-12-12 17:41:40 +01:00
|
|
|
if (qemu_paio_read(&acb->aiocb) < 0) {
|
2009-01-29 18:02:08 +01:00
|
|
|
raw_aio_remove(acb);
|
2006-08-07 04:38:06 +02:00
|
|
|
return NULL;
|
2007-09-16 23:08:06 +02:00
|
|
|
}
|
2006-08-07 04:38:06 +02:00
|
|
|
return &acb->common;
|
2006-08-01 18:21:11 +02:00
|
|
|
}
|
|
|
|
|
2009-04-07 20:43:24 +02:00
|
|
|
static BlockDriverAIOCB *raw_aio_writev(BlockDriverState *bs,
|
|
|
|
int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
|
2006-08-07 04:38:06 +02:00
|
|
|
BlockDriverCompletionFunc *cb, void *opaque)
|
2006-08-01 18:21:11 +02:00
|
|
|
{
|
2006-08-07 04:38:06 +02:00
|
|
|
RawAIOCB *acb;
|
2006-08-01 18:21:11 +02:00
|
|
|
|
2009-04-07 20:43:24 +02:00
|
|
|
acb = raw_aio_setup(bs, sector_num, qiov, nb_sectors, cb, opaque);
|
2006-08-07 04:38:06 +02:00
|
|
|
if (!acb)
|
|
|
|
return NULL;
|
2008-12-12 17:41:40 +01:00
|
|
|
if (qemu_paio_write(&acb->aiocb) < 0) {
|
2009-01-29 18:02:08 +01:00
|
|
|
raw_aio_remove(acb);
|
2006-08-07 04:38:06 +02:00
|
|
|
return NULL;
|
2007-09-16 23:08:06 +02:00
|
|
|
}
|
2006-08-07 04:38:06 +02:00
|
|
|
return &acb->common;
|
2006-08-01 18:21:11 +02:00
|
|
|
}
|
2008-09-22 21:17:18 +02:00
|
|
|
#else /* CONFIG_AIO */
|
|
|
|
static int posix_aio_init(void)
|
2008-08-15 20:20:52 +02:00
|
|
|
{
|
2008-10-03 21:00:40 +02:00
|
|
|
return 0;
|
2008-08-15 20:20:52 +02:00
|
|
|
}
|
|
|
|
#endif /* CONFIG_AIO */
|
|
|
|
|
2008-09-26 17:59:29 +02:00
|
|
|
|
2006-08-01 18:21:11 +02:00
|
|
|
static void raw_close(BlockDriverState *bs)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
2006-08-19 13:45:59 +02:00
|
|
|
if (s->fd >= 0) {
|
|
|
|
close(s->fd);
|
|
|
|
s->fd = -1;
|
2008-05-28 11:51:09 +02:00
|
|
|
if (s->aligned_buf != NULL)
|
|
|
|
qemu_free(s->aligned_buf);
|
2006-08-19 13:45:59 +02:00
|
|
|
}
|
2006-08-01 18:21:11 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
static int raw_truncate(BlockDriverState *bs, int64_t offset)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
2006-08-19 13:45:59 +02:00
|
|
|
if (s->type != FTYPE_FILE)
|
|
|
|
return -ENOTSUP;
|
2006-08-01 18:21:11 +02:00
|
|
|
if (ftruncate(s->fd, offset) < 0)
|
|
|
|
return -errno;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2008-08-15 20:33:42 +02:00
|
|
|
#ifdef __OpenBSD__
|
|
|
|
static int64_t raw_getlength(BlockDriverState *bs)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
int fd = s->fd;
|
|
|
|
struct stat st;
|
|
|
|
|
|
|
|
if (fstat(fd, &st))
|
|
|
|
return -1;
|
|
|
|
if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) {
|
|
|
|
struct disklabel dl;
|
|
|
|
|
|
|
|
if (ioctl(fd, DIOCGDINFO, &dl))
|
|
|
|
return -1;
|
|
|
|
return (uint64_t)dl.d_secsize *
|
|
|
|
dl.d_partitions[DISKPART(st.st_rdev)].p_size;
|
|
|
|
} else
|
|
|
|
return st.st_size;
|
|
|
|
}
|
|
|
|
#else /* !__OpenBSD__ */
|
2006-08-01 18:21:11 +02:00
|
|
|
static int64_t raw_getlength(BlockDriverState *bs)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
int fd = s->fd;
|
|
|
|
int64_t size;
|
2009-07-27 16:12:56 +02:00
|
|
|
#ifdef CONFIG_BSD
|
2006-08-01 18:21:11 +02:00
|
|
|
struct stat sb;
|
2009-03-28 09:37:13 +01:00
|
|
|
#ifdef __FreeBSD__
|
|
|
|
int reopened = 0;
|
|
|
|
#endif
|
2006-08-01 18:21:11 +02:00
|
|
|
#endif
|
|
|
|
#ifdef __sun__
|
|
|
|
struct dk_minfo minfo;
|
|
|
|
int rv;
|
|
|
|
#endif
|
2006-08-19 13:45:59 +02:00
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = fd_open(bs);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
2006-08-01 18:21:11 +02:00
|
|
|
|
2009-07-27 16:12:56 +02:00
|
|
|
#ifdef CONFIG_BSD
|
2009-03-28 09:37:13 +01:00
|
|
|
#ifdef __FreeBSD__
|
|
|
|
again:
|
|
|
|
#endif
|
2006-08-01 18:21:11 +02:00
|
|
|
if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
|
|
|
|
#ifdef DIOCGMEDIASIZE
|
|
|
|
if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
|
2009-03-07 21:06:23 +01:00
|
|
|
#elif defined(DIOCGPART)
|
|
|
|
{
|
|
|
|
struct partinfo pi;
|
|
|
|
if (ioctl(fd, DIOCGPART, &pi) == 0)
|
|
|
|
size = pi.media_size;
|
|
|
|
else
|
|
|
|
size = 0;
|
|
|
|
}
|
|
|
|
if (size == 0)
|
2006-08-01 18:21:11 +02:00
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_COCOA
|
|
|
|
size = LONG_LONG_MAX;
|
|
|
|
#else
|
|
|
|
size = lseek(fd, 0LL, SEEK_END);
|
2009-03-28 09:37:13 +01:00
|
|
|
#endif
|
|
|
|
#ifdef __FreeBSD__
|
|
|
|
switch(s->type) {
|
|
|
|
case FTYPE_CD:
|
|
|
|
/* XXX FreeBSD acd returns UINT_MAX sectors for an empty drive */
|
|
|
|
if (size == 2048LL * (unsigned)-1)
|
|
|
|
size = 0;
|
|
|
|
/* XXX no disc? maybe we need to reopen... */
|
2009-06-15 13:55:19 +02:00
|
|
|
if (size <= 0 && !reopened && cdrom_reopen(bs) >= 0) {
|
2009-03-28 09:37:13 +01:00
|
|
|
reopened = 1;
|
|
|
|
goto again;
|
|
|
|
}
|
|
|
|
}
|
2006-08-01 18:21:11 +02:00
|
|
|
#endif
|
|
|
|
} else
|
|
|
|
#endif
|
|
|
|
#ifdef __sun__
|
|
|
|
/*
|
|
|
|
* use the DKIOCGMEDIAINFO ioctl to read the size.
|
|
|
|
*/
|
|
|
|
rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo );
|
|
|
|
if ( rv != -1 ) {
|
|
|
|
size = minfo.dki_lbsize * minfo.dki_capacity;
|
|
|
|
} else /* there are reports that lseek on some devices
|
|
|
|
fails, but irc discussion said that contingency
|
|
|
|
on contingency was overkill */
|
|
|
|
#endif
|
|
|
|
{
|
|
|
|
size = lseek(fd, 0, SEEK_END);
|
|
|
|
}
|
|
|
|
return size;
|
|
|
|
}
|
2008-08-15 20:33:42 +02:00
|
|
|
#endif
|
2006-08-01 18:21:11 +02:00
|
|
|
|
2009-05-18 16:42:10 +02:00
|
|
|
static int raw_create(const char *filename, QEMUOptionParameter *options)
|
2006-08-01 18:21:11 +02:00
|
|
|
{
|
|
|
|
int fd;
|
2009-07-11 16:43:37 +02:00
|
|
|
int result = 0;
|
2009-05-18 16:42:10 +02:00
|
|
|
int64_t total_size = 0;
|
2006-08-01 18:21:11 +02:00
|
|
|
|
2009-05-18 16:42:10 +02:00
|
|
|
/* Read out options */
|
|
|
|
while (options && options->name) {
|
|
|
|
if (!strcmp(options->name, BLOCK_OPT_SIZE)) {
|
|
|
|
total_size = options->value.n / 512;
|
|
|
|
}
|
|
|
|
options++;
|
|
|
|
}
|
2006-08-01 18:21:11 +02:00
|
|
|
|
2007-09-16 23:08:06 +02:00
|
|
|
fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
|
2006-08-01 18:21:11 +02:00
|
|
|
0644);
|
2009-07-11 16:43:37 +02:00
|
|
|
if (fd < 0) {
|
|
|
|
result = -errno;
|
|
|
|
} else {
|
|
|
|
if (ftruncate(fd, total_size * 512) != 0) {
|
|
|
|
result = -errno;
|
|
|
|
}
|
|
|
|
if (close(fd) != 0) {
|
|
|
|
result = -errno;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return result;
|
2006-08-01 18:21:11 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
static void raw_flush(BlockDriverState *bs)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
fsync(s->fd);
|
|
|
|
}
|
|
|
|
|
2009-05-18 16:42:10 +02:00
|
|
|
|
|
|
|
static QEMUOptionParameter raw_create_options[] = {
|
2009-06-04 15:39:38 +02:00
|
|
|
{
|
|
|
|
.name = BLOCK_OPT_SIZE,
|
|
|
|
.type = OPT_SIZE,
|
|
|
|
.help = "Virtual disk size"
|
|
|
|
},
|
2009-05-18 16:42:10 +02:00
|
|
|
{ NULL }
|
|
|
|
};
|
|
|
|
|
2009-05-10 00:03:42 +02:00
|
|
|
static BlockDriver bdrv_raw = {
|
2009-04-07 19:57:09 +02:00
|
|
|
.format_name = "raw",
|
|
|
|
.instance_size = sizeof(BDRVRawState),
|
|
|
|
.bdrv_probe = NULL, /* no probe for protocols */
|
|
|
|
.bdrv_open = raw_open,
|
|
|
|
.bdrv_read = raw_read,
|
|
|
|
.bdrv_write = raw_write,
|
|
|
|
.bdrv_close = raw_close,
|
|
|
|
.bdrv_create = raw_create,
|
|
|
|
.bdrv_flush = raw_flush,
|
2007-09-17 10:09:54 +02:00
|
|
|
|
2008-08-15 20:20:52 +02:00
|
|
|
#ifdef CONFIG_AIO
|
2009-04-07 20:43:24 +02:00
|
|
|
.bdrv_aio_readv = raw_aio_readv,
|
|
|
|
.bdrv_aio_writev = raw_aio_writev,
|
2008-08-15 20:20:52 +02:00
|
|
|
#endif
|
2008-12-12 17:41:40 +01:00
|
|
|
|
2006-08-01 18:21:11 +02:00
|
|
|
.bdrv_truncate = raw_truncate,
|
|
|
|
.bdrv_getlength = raw_getlength,
|
2009-05-18 16:42:10 +02:00
|
|
|
|
|
|
|
.create_options = raw_create_options,
|
2006-08-01 18:21:11 +02:00
|
|
|
};
|
|
|
|
|
2006-08-19 13:45:59 +02:00
|
|
|
/***********************************************/
|
|
|
|
/* host device */
|
|
|
|
|
|
|
|
#ifdef CONFIG_COCOA
|
|
|
|
static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator );
|
|
|
|
static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize );
|
|
|
|
|
|
|
|
kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator )
|
|
|
|
{
|
2007-09-16 23:08:06 +02:00
|
|
|
kern_return_t kernResult;
|
2006-08-19 13:45:59 +02:00
|
|
|
mach_port_t masterPort;
|
|
|
|
CFMutableDictionaryRef classesToMatch;
|
|
|
|
|
|
|
|
kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort );
|
|
|
|
if ( KERN_SUCCESS != kernResult ) {
|
|
|
|
printf( "IOMasterPort returned %d\n", kernResult );
|
|
|
|
}
|
2007-09-17 10:09:54 +02:00
|
|
|
|
2007-09-16 23:08:06 +02:00
|
|
|
classesToMatch = IOServiceMatching( kIOCDMediaClass );
|
2006-08-19 13:45:59 +02:00
|
|
|
if ( classesToMatch == NULL ) {
|
|
|
|
printf( "IOServiceMatching returned a NULL dictionary.\n" );
|
|
|
|
} else {
|
|
|
|
CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue );
|
|
|
|
}
|
|
|
|
kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator );
|
|
|
|
if ( KERN_SUCCESS != kernResult )
|
|
|
|
{
|
|
|
|
printf( "IOServiceGetMatchingServices returned %d\n", kernResult );
|
|
|
|
}
|
2007-09-17 10:09:54 +02:00
|
|
|
|
2006-08-19 13:45:59 +02:00
|
|
|
return kernResult;
|
|
|
|
}
|
|
|
|
|
|
|
|
kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize )
|
|
|
|
{
|
|
|
|
io_object_t nextMedia;
|
|
|
|
kern_return_t kernResult = KERN_FAILURE;
|
|
|
|
*bsdPath = '\0';
|
|
|
|
nextMedia = IOIteratorNext( mediaIterator );
|
|
|
|
if ( nextMedia )
|
|
|
|
{
|
|
|
|
CFTypeRef bsdPathAsCFString;
|
|
|
|
bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 );
|
|
|
|
if ( bsdPathAsCFString ) {
|
|
|
|
size_t devPathLength;
|
|
|
|
strcpy( bsdPath, _PATH_DEV );
|
|
|
|
strcat( bsdPath, "r" );
|
|
|
|
devPathLength = strlen( bsdPath );
|
|
|
|
if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) {
|
|
|
|
kernResult = KERN_SUCCESS;
|
|
|
|
}
|
|
|
|
CFRelease( bsdPathAsCFString );
|
|
|
|
}
|
|
|
|
IOObjectRelease( nextMedia );
|
|
|
|
}
|
2007-09-17 10:09:54 +02:00
|
|
|
|
2006-08-19 13:45:59 +02:00
|
|
|
return kernResult;
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
2009-06-15 14:04:22 +02:00
|
|
|
static int hdev_probe_device(const char *filename)
|
|
|
|
{
|
|
|
|
struct stat st;
|
|
|
|
|
|
|
|
/* allow a dedicated CD-ROM driver to match with a higher priority */
|
|
|
|
if (strstart(filename, "/dev/cdrom", NULL))
|
|
|
|
return 50;
|
|
|
|
|
|
|
|
if (stat(filename, &st) >= 0 &&
|
|
|
|
(S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode))) {
|
|
|
|
return 100;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2006-08-19 13:45:59 +02:00
|
|
|
static int hdev_open(BlockDriverState *bs, const char *filename, int flags)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
2008-09-22 21:17:18 +02:00
|
|
|
|
2006-08-19 13:45:59 +02:00
|
|
|
#ifdef CONFIG_COCOA
|
|
|
|
if (strstart(filename, "/dev/cdrom", NULL)) {
|
|
|
|
kern_return_t kernResult;
|
|
|
|
io_iterator_t mediaIterator;
|
|
|
|
char bsdPath[ MAXPATHLEN ];
|
|
|
|
int fd;
|
2007-09-16 23:08:06 +02:00
|
|
|
|
2006-08-19 13:45:59 +02:00
|
|
|
kernResult = FindEjectableCDMedia( &mediaIterator );
|
|
|
|
kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) );
|
2007-09-17 10:09:54 +02:00
|
|
|
|
2006-08-19 13:45:59 +02:00
|
|
|
if ( bsdPath[ 0 ] != '\0' ) {
|
|
|
|
strcat(bsdPath,"s0");
|
|
|
|
/* some CDs don't have a partition 0 */
|
|
|
|
fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE);
|
|
|
|
if (fd < 0) {
|
|
|
|
bsdPath[strlen(bsdPath)-1] = '1';
|
|
|
|
} else {
|
|
|
|
close(fd);
|
|
|
|
}
|
|
|
|
filename = bsdPath;
|
|
|
|
}
|
2007-09-17 10:09:54 +02:00
|
|
|
|
2006-08-19 13:45:59 +02:00
|
|
|
if ( mediaIterator )
|
|
|
|
IOObjectRelease( mediaIterator );
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
s->type = FTYPE_FILE;
|
2009-06-15 13:55:19 +02:00
|
|
|
#if defined(__linux__) && defined(CONFIG_AIO)
|
|
|
|
if (strstart(filename, "/dev/sg", NULL)) {
|
2007-12-24 17:10:43 +01:00
|
|
|
bs->sg = 1;
|
2006-08-19 13:45:59 +02:00
|
|
|
}
|
|
|
|
#endif
|
2009-06-15 13:53:38 +02:00
|
|
|
|
2009-06-17 17:27:44 +02:00
|
|
|
return raw_open_common(bs, filename, flags, 0);
|
2006-08-19 13:45:59 +02:00
|
|
|
}
|
|
|
|
|
2008-09-15 17:51:35 +02:00
|
|
|
#if defined(__linux__)
|
2006-08-19 13:45:59 +02:00
|
|
|
/* Note: we do not have a reliable method to detect if the floppy is
|
|
|
|
present. The current method is to try to open the floppy at every
|
|
|
|
I/O and to keep it opened during a few hundreds of ms. */
|
|
|
|
static int fd_open(BlockDriverState *bs)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
int last_media_present;
|
|
|
|
|
|
|
|
if (s->type != FTYPE_FD)
|
|
|
|
return 0;
|
|
|
|
last_media_present = (s->fd >= 0);
|
2007-09-16 23:08:06 +02:00
|
|
|
if (s->fd >= 0 &&
|
2006-08-19 13:45:59 +02:00
|
|
|
(qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) {
|
|
|
|
close(s->fd);
|
|
|
|
s->fd = -1;
|
|
|
|
#ifdef DEBUG_FLOPPY
|
|
|
|
printf("Floppy closed\n");
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
if (s->fd < 0) {
|
2007-09-16 23:08:06 +02:00
|
|
|
if (s->fd_got_error &&
|
2006-08-19 13:45:59 +02:00
|
|
|
(qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) {
|
|
|
|
#ifdef DEBUG_FLOPPY
|
|
|
|
printf("No floppy (open delayed)\n");
|
|
|
|
#endif
|
|
|
|
return -EIO;
|
|
|
|
}
|
2009-06-15 13:53:26 +02:00
|
|
|
s->fd = open(bs->filename, s->open_flags & ~O_NONBLOCK);
|
2006-08-19 13:45:59 +02:00
|
|
|
if (s->fd < 0) {
|
|
|
|
s->fd_error_time = qemu_get_clock(rt_clock);
|
|
|
|
s->fd_got_error = 1;
|
|
|
|
if (last_media_present)
|
|
|
|
s->fd_media_changed = 1;
|
|
|
|
#ifdef DEBUG_FLOPPY
|
|
|
|
printf("No floppy\n");
|
|
|
|
#endif
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
#ifdef DEBUG_FLOPPY
|
|
|
|
printf("Floppy opened\n");
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
if (!last_media_present)
|
|
|
|
s->fd_media_changed = 1;
|
|
|
|
s->fd_open_time = qemu_get_clock(rt_clock);
|
|
|
|
s->fd_got_error = 0;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-06-15 14:04:34 +02:00
|
|
|
static int hdev_ioctl(BlockDriverState *bs, unsigned long int req, void *buf)
|
2007-12-24 17:10:43 +01:00
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
|
|
|
|
return ioctl(s->fd, req, buf);
|
|
|
|
}
|
2009-03-28 18:28:41 +01:00
|
|
|
|
2009-04-05 21:10:50 +02:00
|
|
|
#ifdef CONFIG_AIO
|
2009-06-15 14:04:34 +02:00
|
|
|
static BlockDriverAIOCB *hdev_aio_ioctl(BlockDriverState *bs,
|
2009-03-28 18:28:41 +01:00
|
|
|
unsigned long int req, void *buf,
|
|
|
|
BlockDriverCompletionFunc *cb, void *opaque)
|
|
|
|
{
|
2009-04-07 20:43:24 +02:00
|
|
|
BDRVRawState *s = bs->opaque;
|
2009-03-28 18:28:41 +01:00
|
|
|
RawAIOCB *acb;
|
|
|
|
|
2009-04-07 20:43:24 +02:00
|
|
|
if (fd_open(bs) < 0)
|
|
|
|
return NULL;
|
|
|
|
|
2009-05-25 12:37:32 +02:00
|
|
|
acb = qemu_aio_get(&raw_aio_pool, bs, cb, opaque);
|
2009-03-28 18:28:41 +01:00
|
|
|
if (!acb)
|
|
|
|
return NULL;
|
2009-04-07 20:43:24 +02:00
|
|
|
acb->aiocb.aio_fildes = s->fd;
|
|
|
|
acb->aiocb.ev_signo = SIGUSR2;
|
|
|
|
acb->aiocb.aio_offset = 0;
|
|
|
|
acb->aiocb.aio_flags = 0;
|
|
|
|
|
|
|
|
acb->next = posix_aio_state->first_aio;
|
|
|
|
posix_aio_state->first_aio = acb;
|
2009-03-28 18:28:41 +01:00
|
|
|
|
2009-04-07 20:43:24 +02:00
|
|
|
acb->aiocb.aio_ioctl_buf = buf;
|
2009-03-28 18:28:41 +01:00
|
|
|
acb->aiocb.aio_ioctl_cmd = req;
|
|
|
|
if (qemu_paio_ioctl(&acb->aiocb) < 0) {
|
|
|
|
raw_aio_remove(acb);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return &acb->common;
|
|
|
|
}
|
2009-04-05 21:10:50 +02:00
|
|
|
#endif
|
2009-03-28 18:28:41 +01:00
|
|
|
|
2009-03-28 09:37:13 +01:00
|
|
|
#elif defined(__FreeBSD__)
|
|
|
|
static int fd_open(BlockDriverState *bs)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
|
|
|
|
/* this is just to ensure s->fd is sane (its called by io ops) */
|
|
|
|
if (s->fd >= 0)
|
|
|
|
return 0;
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
#else /* !linux && !FreeBSD */
|
2006-08-19 13:45:59 +02:00
|
|
|
|
2008-09-15 18:48:11 +02:00
|
|
|
static int fd_open(BlockDriverState *bs)
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-03-28 18:28:41 +01:00
|
|
|
#endif /* !linux && !FreeBSD */
|
2009-03-12 20:57:12 +01:00
|
|
|
|
2009-05-18 16:42:10 +02:00
|
|
|
static int hdev_create(const char *filename, QEMUOptionParameter *options)
|
2009-04-05 19:40:43 +02:00
|
|
|
{
|
|
|
|
int fd;
|
|
|
|
int ret = 0;
|
|
|
|
struct stat stat_buf;
|
2009-05-18 16:42:10 +02:00
|
|
|
int64_t total_size = 0;
|
2009-04-05 19:40:43 +02:00
|
|
|
|
2009-05-18 16:42:10 +02:00
|
|
|
/* Read out options */
|
|
|
|
while (options && options->name) {
|
|
|
|
if (!strcmp(options->name, "size")) {
|
|
|
|
total_size = options->value.n / 512;
|
|
|
|
}
|
|
|
|
options++;
|
|
|
|
}
|
2009-04-05 19:40:43 +02:00
|
|
|
|
|
|
|
fd = open(filename, O_WRONLY | O_BINARY);
|
|
|
|
if (fd < 0)
|
|
|
|
return -EIO;
|
|
|
|
|
|
|
|
if (fstat(fd, &stat_buf) < 0)
|
|
|
|
ret = -EIO;
|
2009-05-25 10:29:13 +02:00
|
|
|
else if (!S_ISBLK(stat_buf.st_mode) && !S_ISCHR(stat_buf.st_mode))
|
2009-04-05 19:40:43 +02:00
|
|
|
ret = -EIO;
|
|
|
|
else if (lseek(fd, 0, SEEK_END) < total_size * 512)
|
|
|
|
ret = -ENOSPC;
|
|
|
|
|
|
|
|
close(fd);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2009-05-10 00:03:42 +02:00
|
|
|
static BlockDriver bdrv_host_device = {
|
2009-03-07 23:00:29 +01:00
|
|
|
.format_name = "host_device",
|
|
|
|
.instance_size = sizeof(BDRVRawState),
|
2009-06-15 14:04:22 +02:00
|
|
|
.bdrv_probe_device = hdev_probe_device,
|
2009-03-07 23:00:29 +01:00
|
|
|
.bdrv_open = hdev_open,
|
|
|
|
.bdrv_close = raw_close,
|
2009-04-05 19:40:43 +02:00
|
|
|
.bdrv_create = hdev_create,
|
2009-03-07 23:00:29 +01:00
|
|
|
.bdrv_flush = raw_flush,
|
2007-09-17 10:09:54 +02:00
|
|
|
|
2008-08-15 20:20:52 +02:00
|
|
|
#ifdef CONFIG_AIO
|
2009-04-07 20:43:24 +02:00
|
|
|
.bdrv_aio_readv = raw_aio_readv,
|
|
|
|
.bdrv_aio_writev = raw_aio_writev,
|
2008-08-15 20:20:52 +02:00
|
|
|
#endif
|
2008-12-12 17:41:40 +01:00
|
|
|
|
2009-03-12 20:57:16 +01:00
|
|
|
.bdrv_read = raw_read,
|
|
|
|
.bdrv_write = raw_write,
|
2009-03-07 23:00:29 +01:00
|
|
|
.bdrv_getlength = raw_getlength,
|
2006-08-19 13:45:59 +02:00
|
|
|
|
2009-06-15 13:55:19 +02:00
|
|
|
/* generic scsi device */
|
2009-06-15 14:04:34 +02:00
|
|
|
#ifdef __linux__
|
|
|
|
.bdrv_ioctl = hdev_ioctl,
|
2009-06-15 13:55:19 +02:00
|
|
|
#ifdef CONFIG_AIO
|
2009-06-15 14:04:34 +02:00
|
|
|
.bdrv_aio_ioctl = hdev_aio_ioctl,
|
|
|
|
#endif
|
2009-06-15 13:55:19 +02:00
|
|
|
#endif
|
|
|
|
};
|
|
|
|
|
|
|
|
#ifdef __linux__
|
|
|
|
static int floppy_open(BlockDriverState *bs, const char *filename, int flags)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
posix_aio_init();
|
|
|
|
|
|
|
|
s->type = FTYPE_FD;
|
|
|
|
|
2009-06-17 17:27:44 +02:00
|
|
|
/* open will not fail even if no floppy is inserted, so add O_NONBLOCK */
|
|
|
|
ret = raw_open_common(bs, filename, flags, O_NONBLOCK);
|
2009-06-15 13:55:19 +02:00
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
/* close fd so that we can reopen it as needed */
|
|
|
|
close(s->fd);
|
|
|
|
s->fd = -1;
|
|
|
|
s->fd_media_changed = 1;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-06-15 14:04:22 +02:00
|
|
|
static int floppy_probe_device(const char *filename)
|
|
|
|
{
|
|
|
|
if (strstart(filename, "/dev/fd", NULL))
|
|
|
|
return 100;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2009-06-15 13:55:19 +02:00
|
|
|
static int floppy_is_inserted(BlockDriverState *bs)
|
|
|
|
{
|
|
|
|
return fd_open(bs) >= 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int floppy_media_changed(BlockDriverState *bs)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* XXX: we do not have a true media changed indication.
|
|
|
|
* It does not work if the floppy is changed without trying to read it.
|
|
|
|
*/
|
|
|
|
fd_open(bs);
|
|
|
|
ret = s->fd_media_changed;
|
|
|
|
s->fd_media_changed = 0;
|
|
|
|
#ifdef DEBUG_FLOPPY
|
|
|
|
printf("Floppy changed=%d\n", ret);
|
|
|
|
#endif
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int floppy_eject(BlockDriverState *bs, int eject_flag)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
int fd;
|
|
|
|
|
|
|
|
if (s->fd >= 0) {
|
|
|
|
close(s->fd);
|
|
|
|
s->fd = -1;
|
|
|
|
}
|
|
|
|
fd = open(bs->filename, s->open_flags | O_NONBLOCK);
|
|
|
|
if (fd >= 0) {
|
|
|
|
if (ioctl(fd, FDEJECT, 0) < 0)
|
|
|
|
perror("FDEJECT");
|
|
|
|
close(fd);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static BlockDriver bdrv_host_floppy = {
|
|
|
|
.format_name = "host_floppy",
|
|
|
|
.instance_size = sizeof(BDRVRawState),
|
2009-06-15 14:04:22 +02:00
|
|
|
.bdrv_probe_device = floppy_probe_device,
|
2009-06-15 13:55:19 +02:00
|
|
|
.bdrv_open = floppy_open,
|
|
|
|
.bdrv_close = raw_close,
|
|
|
|
.bdrv_create = hdev_create,
|
|
|
|
.bdrv_flush = raw_flush,
|
|
|
|
|
|
|
|
#ifdef CONFIG_AIO
|
|
|
|
.bdrv_aio_readv = raw_aio_readv,
|
|
|
|
.bdrv_aio_writev = raw_aio_writev,
|
|
|
|
#endif
|
|
|
|
|
|
|
|
.bdrv_read = raw_read,
|
|
|
|
.bdrv_write = raw_write,
|
|
|
|
.bdrv_getlength = raw_getlength,
|
|
|
|
|
|
|
|
/* removable device support */
|
|
|
|
.bdrv_is_inserted = floppy_is_inserted,
|
|
|
|
.bdrv_media_changed = floppy_media_changed,
|
|
|
|
.bdrv_eject = floppy_eject,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int cdrom_open(BlockDriverState *bs, const char *filename, int flags)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
|
|
|
|
s->type = FTYPE_CD;
|
|
|
|
|
2009-06-17 17:27:44 +02:00
|
|
|
/* open will not fail even if no CD is inserted, so add O_NONBLOCK */
|
|
|
|
return raw_open_common(bs, filename, flags, O_NONBLOCK);
|
2009-06-15 13:55:19 +02:00
|
|
|
}
|
|
|
|
|
2009-06-15 14:04:22 +02:00
|
|
|
static int cdrom_probe_device(const char *filename)
|
|
|
|
{
|
|
|
|
if (strstart(filename, "/dev/cd", NULL))
|
|
|
|
return 100;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-06-15 13:55:19 +02:00
|
|
|
static int cdrom_is_inserted(BlockDriverState *bs)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT);
|
|
|
|
if (ret == CDS_DISC_OK)
|
|
|
|
return 1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int cdrom_eject(BlockDriverState *bs, int eject_flag)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
|
|
|
|
if (eject_flag) {
|
|
|
|
if (ioctl(s->fd, CDROMEJECT, NULL) < 0)
|
|
|
|
perror("CDROMEJECT");
|
|
|
|
} else {
|
|
|
|
if (ioctl(s->fd, CDROMCLOSETRAY, NULL) < 0)
|
|
|
|
perror("CDROMEJECT");
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int cdrom_set_locked(BlockDriverState *bs, int locked)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
|
|
|
|
if (ioctl(s->fd, CDROM_LOCKDOOR, locked) < 0) {
|
|
|
|
/*
|
|
|
|
* Note: an error can happen if the distribution automatically
|
|
|
|
* mounts the CD-ROM
|
|
|
|
*/
|
|
|
|
/* perror("CDROM_LOCKDOOR"); */
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static BlockDriver bdrv_host_cdrom = {
|
|
|
|
.format_name = "host_cdrom",
|
|
|
|
.instance_size = sizeof(BDRVRawState),
|
2009-06-15 14:04:22 +02:00
|
|
|
.bdrv_probe_device = cdrom_probe_device,
|
2009-06-15 13:55:19 +02:00
|
|
|
.bdrv_open = cdrom_open,
|
|
|
|
.bdrv_close = raw_close,
|
|
|
|
.bdrv_create = hdev_create,
|
|
|
|
.bdrv_flush = raw_flush,
|
|
|
|
|
|
|
|
#ifdef CONFIG_AIO
|
|
|
|
.bdrv_aio_readv = raw_aio_readv,
|
|
|
|
.bdrv_aio_writev = raw_aio_writev,
|
|
|
|
#endif
|
|
|
|
|
|
|
|
.bdrv_read = raw_read,
|
|
|
|
.bdrv_write = raw_write,
|
|
|
|
.bdrv_getlength = raw_getlength,
|
|
|
|
|
|
|
|
/* removable device support */
|
|
|
|
.bdrv_is_inserted = cdrom_is_inserted,
|
|
|
|
.bdrv_eject = cdrom_eject,
|
|
|
|
.bdrv_set_locked = cdrom_set_locked,
|
|
|
|
|
|
|
|
/* generic scsi device */
|
2009-06-15 14:04:34 +02:00
|
|
|
.bdrv_ioctl = hdev_ioctl,
|
2009-06-15 13:55:19 +02:00
|
|
|
#ifdef CONFIG_AIO
|
2009-06-15 14:04:34 +02:00
|
|
|
.bdrv_aio_ioctl = hdev_aio_ioctl,
|
2009-06-15 13:55:19 +02:00
|
|
|
#endif
|
|
|
|
};
|
|
|
|
#endif /* __linux__ */
|
|
|
|
|
|
|
|
#ifdef __FreeBSD__
|
|
|
|
static int cdrom_open(BlockDriverState *bs, const char *filename, int flags)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
s->type = FTYPE_CD;
|
|
|
|
|
2009-06-17 17:27:44 +02:00
|
|
|
ret = raw_open_common(bs, filename, flags, 0);
|
2009-06-15 13:55:19 +02:00
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
/* make sure the door isnt locked at this time */
|
|
|
|
ioctl(s->fd, CDIOCALLOW);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-06-15 14:04:22 +02:00
|
|
|
static int cdrom_probe_device(const char *filename)
|
|
|
|
{
|
|
|
|
if (strstart(filename, "/dev/cd", NULL) ||
|
|
|
|
strstart(filename, "/dev/acd", NULL))
|
|
|
|
return 100;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-06-15 13:55:19 +02:00
|
|
|
static int cdrom_reopen(BlockDriverState *bs)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
int fd;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Force reread of possibly changed/newly loaded disc,
|
|
|
|
* FreeBSD seems to not notice sometimes...
|
|
|
|
*/
|
|
|
|
if (s->fd >= 0)
|
|
|
|
close(s->fd);
|
|
|
|
fd = open(bs->filename, s->open_flags, 0644);
|
|
|
|
if (fd < 0) {
|
|
|
|
s->fd = -1;
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
s->fd = fd;
|
|
|
|
|
|
|
|
/* make sure the door isnt locked at this time */
|
|
|
|
ioctl(s->fd, CDIOCALLOW);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int cdrom_is_inserted(BlockDriverState *bs)
|
|
|
|
{
|
|
|
|
return raw_getlength(bs) > 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int cdrom_eject(BlockDriverState *bs, int eject_flag)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
|
|
|
|
if (s->fd < 0)
|
|
|
|
return -ENOTSUP;
|
|
|
|
|
|
|
|
(void) ioctl(s->fd, CDIOCALLOW);
|
|
|
|
|
|
|
|
if (eject_flag) {
|
|
|
|
if (ioctl(s->fd, CDIOCEJECT) < 0)
|
|
|
|
perror("CDIOCEJECT");
|
|
|
|
} else {
|
|
|
|
if (ioctl(s->fd, CDIOCCLOSE) < 0)
|
|
|
|
perror("CDIOCCLOSE");
|
|
|
|
}
|
|
|
|
|
|
|
|
if (cdrom_reopen(bs) < 0)
|
|
|
|
return -ENOTSUP;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int cdrom_set_locked(BlockDriverState *bs, int locked)
|
|
|
|
{
|
|
|
|
BDRVRawState *s = bs->opaque;
|
|
|
|
|
|
|
|
if (s->fd < 0)
|
|
|
|
return -ENOTSUP;
|
|
|
|
if (ioctl(s->fd, (locked ? CDIOCPREVENT : CDIOCALLOW)) < 0) {
|
|
|
|
/*
|
|
|
|
* Note: an error can happen if the distribution automatically
|
|
|
|
* mounts the CD-ROM
|
|
|
|
*/
|
|
|
|
/* perror("CDROM_LOCKDOOR"); */
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static BlockDriver bdrv_host_cdrom = {
|
|
|
|
.format_name = "host_cdrom",
|
|
|
|
.instance_size = sizeof(BDRVRawState),
|
2009-06-15 14:04:22 +02:00
|
|
|
.bdrv_probe_device = cdrom_probe_device,
|
2009-06-15 13:55:19 +02:00
|
|
|
.bdrv_open = cdrom_open,
|
|
|
|
.bdrv_close = raw_close,
|
|
|
|
.bdrv_create = hdev_create,
|
|
|
|
.bdrv_flush = raw_flush,
|
|
|
|
|
|
|
|
#ifdef CONFIG_AIO
|
|
|
|
.bdrv_aio_readv = raw_aio_readv,
|
|
|
|
.bdrv_aio_writev = raw_aio_writev,
|
|
|
|
#endif
|
|
|
|
|
|
|
|
.bdrv_read = raw_read,
|
|
|
|
.bdrv_write = raw_write,
|
|
|
|
.bdrv_getlength = raw_getlength,
|
|
|
|
|
2006-08-19 13:45:59 +02:00
|
|
|
/* removable device support */
|
2009-06-15 13:55:19 +02:00
|
|
|
.bdrv_is_inserted = cdrom_is_inserted,
|
|
|
|
.bdrv_eject = cdrom_eject,
|
|
|
|
.bdrv_set_locked = cdrom_set_locked,
|
2006-08-19 13:45:59 +02:00
|
|
|
};
|
2009-06-15 13:55:19 +02:00
|
|
|
#endif /* __FreeBSD__ */
|
2009-05-10 00:03:42 +02:00
|
|
|
|
|
|
|
static void bdrv_raw_init(void)
|
|
|
|
{
|
2009-06-15 14:04:22 +02:00
|
|
|
/*
|
|
|
|
* Register all the drivers. Note that order is important, the driver
|
|
|
|
* registered last will get probed first.
|
|
|
|
*/
|
2009-05-10 00:03:42 +02:00
|
|
|
bdrv_register(&bdrv_raw);
|
|
|
|
bdrv_register(&bdrv_host_device);
|
2009-06-15 13:55:19 +02:00
|
|
|
#ifdef __linux__
|
|
|
|
bdrv_register(&bdrv_host_floppy);
|
|
|
|
bdrv_register(&bdrv_host_cdrom);
|
|
|
|
#endif
|
|
|
|
#ifdef __FreeBSD__
|
|
|
|
bdrv_register(&bdrv_host_cdrom);
|
|
|
|
#endif
|
2009-05-10 00:03:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
block_init(bdrv_raw_init);
|