root / block-raw-posix.c @ a3392f9b
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/*
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* Block driver for RAW files (posix)
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*
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* Copyright (c) 2006 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu-common.h" |
25 |
#if !defined(QEMU_IMG) && !defined(QEMU_NBD)
|
26 |
#include "qemu-timer.h" |
27 |
#include "exec-all.h" |
28 |
#include "qemu-char.h" |
29 |
#endif
|
30 |
#include "block_int.h" |
31 |
#include "compatfd.h" |
32 |
#include <assert.h> |
33 |
#ifdef CONFIG_AIO
|
34 |
#include <aio.h> |
35 |
#endif
|
36 |
|
37 |
#ifdef CONFIG_COCOA
|
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#include <paths.h> |
39 |
#include <sys/param.h> |
40 |
#include <IOKit/IOKitLib.h> |
41 |
#include <IOKit/IOBSD.h> |
42 |
#include <IOKit/storage/IOMediaBSDClient.h> |
43 |
#include <IOKit/storage/IOMedia.h> |
44 |
#include <IOKit/storage/IOCDMedia.h> |
45 |
//#include <IOKit/storage/IOCDTypes.h>
|
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#include <CoreFoundation/CoreFoundation.h> |
47 |
#endif
|
48 |
|
49 |
#ifdef __sun__
|
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#define _POSIX_PTHREAD_SEMANTICS 1 |
51 |
#include <signal.h> |
52 |
#include <sys/dkio.h> |
53 |
#endif
|
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#ifdef __linux__
|
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#include <sys/ioctl.h> |
56 |
#include <linux/cdrom.h> |
57 |
#include <linux/fd.h> |
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#endif
|
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#ifdef __FreeBSD__
|
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#include <signal.h> |
61 |
#include <sys/disk.h> |
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#endif
|
63 |
|
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#ifdef __OpenBSD__
|
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#include <sys/ioctl.h> |
66 |
#include <sys/disklabel.h> |
67 |
#include <sys/dkio.h> |
68 |
#endif
|
69 |
|
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//#define DEBUG_FLOPPY
|
71 |
|
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//#define DEBUG_BLOCK
|
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#if defined(DEBUG_BLOCK) && !defined(QEMU_IMG) && !defined(QEMU_NBD)
|
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#define DEBUG_BLOCK_PRINT(formatCstr, args...) do { if (loglevel != 0) \ |
75 |
{ fprintf(logfile, formatCstr, ##args); fflush(logfile); } } while (0) |
76 |
#else
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#define DEBUG_BLOCK_PRINT(formatCstr, args...)
|
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#endif
|
79 |
|
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#define FTYPE_FILE 0 |
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#define FTYPE_CD 1 |
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#define FTYPE_FD 2 |
83 |
|
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#define ALIGNED_BUFFER_SIZE (32 * 512) |
85 |
|
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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 |
89 |
|
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typedef struct BDRVRawState { |
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int fd;
|
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int type;
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unsigned int lseek_err_cnt; |
94 |
#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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#if defined(O_DIRECT) && !defined(QEMU_IMG)
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uint8_t* aligned_buf; |
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#endif
|
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} BDRVRawState; |
106 |
|
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static int fd_open(BlockDriverState *bs); |
108 |
|
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static int raw_open(BlockDriverState *bs, const char *filename, int flags) |
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{ |
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BDRVRawState *s = bs->opaque; |
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int fd, open_flags, ret;
|
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|
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s->lseek_err_cnt = 0;
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|
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open_flags = O_BINARY; |
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if ((flags & BDRV_O_ACCESS) == O_RDWR) {
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open_flags |= O_RDWR; |
119 |
} 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; |
125 |
#ifdef O_DIRECT
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if (flags & BDRV_O_DIRECT)
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open_flags |= O_DIRECT; |
128 |
#endif
|
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|
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s->type = FTYPE_FILE; |
131 |
|
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fd = open(filename, open_flags, 0644);
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if (fd < 0) { |
134 |
ret = -errno; |
135 |
if (ret == -EROFS)
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ret = -EACCES; |
137 |
return ret;
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} |
139 |
s->fd = fd; |
140 |
#if defined(O_DIRECT) && !defined(QEMU_IMG)
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s->aligned_buf = NULL;
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if (flags & BDRV_O_DIRECT) {
|
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s->aligned_buf = qemu_memalign(512, ALIGNED_BUFFER_SIZE);
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if (s->aligned_buf == NULL) { |
145 |
ret = -errno; |
146 |
close(fd); |
147 |
return ret;
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} |
149 |
} |
150 |
#endif
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return 0; |
152 |
} |
153 |
|
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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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/*
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* offset and count are in bytes, but must be multiples of 512 for files
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* opened with O_DIRECT. buf must be aligned to 512 bytes then.
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*
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* This function may be called without alignment if the caller ensures
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* that O_DIRECT is not in effect.
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*/
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static int raw_pread_aligned(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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183 |
|
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ret = fd_open(bs); |
185 |
if (ret < 0) |
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return ret;
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|
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if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
189 |
++(s->lseek_err_cnt); |
190 |
if(s->lseek_err_cnt <= 10) { |
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DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
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"] lseek failed : %d = %s\n",
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s->fd, bs->filename, offset, buf, count, |
194 |
bs->total_sectors, errno, strerror(errno)); |
195 |
} |
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return -1; |
197 |
} |
198 |
s->lseek_err_cnt=0;
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|
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ret = read(s->fd, buf, count); |
201 |
if (ret == count)
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goto label__raw_read__success;
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203 |
|
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DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
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"] read failed %d : %d = %s\n",
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s->fd, bs->filename, offset, buf, count, |
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bs->total_sectors, ret, errno, strerror(errno)); |
208 |
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/* Try harder for CDrom. */
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if (bs->type == BDRV_TYPE_CDROM) {
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lseek(s->fd, offset, SEEK_SET); |
212 |
ret = read(s->fd, buf, count); |
213 |
if (ret == count)
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goto label__raw_read__success;
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lseek(s->fd, offset, SEEK_SET); |
216 |
ret = read(s->fd, buf, count); |
217 |
if (ret == count)
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goto label__raw_read__success;
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|
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DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
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"] retry read failed %d : %d = %s\n",
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s->fd, bs->filename, offset, buf, count, |
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bs->total_sectors, ret, errno, strerror(errno)); |
224 |
} |
225 |
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label__raw_read__success:
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return ret;
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} |
230 |
|
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/*
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* offset and count are in bytes, but must be multiples of 512 for files
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* opened with O_DIRECT. buf must be aligned to 512 bytes then.
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*
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* This function may be called without alignment if the caller ensures
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* that O_DIRECT is not in effect.
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*/
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static int raw_pwrite_aligned(BlockDriverState *bs, int64_t offset, |
239 |
const uint8_t *buf, int count) |
240 |
{ |
241 |
BDRVRawState *s = bs->opaque; |
242 |
int ret;
|
243 |
|
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ret = fd_open(bs); |
245 |
if (ret < 0) |
246 |
return ret;
|
247 |
|
248 |
if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
249 |
++(s->lseek_err_cnt); |
250 |
if(s->lseek_err_cnt) {
|
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DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" |
252 |
PRId64 "] lseek failed : %d = %s\n",
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s->fd, bs->filename, offset, buf, count, |
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bs->total_sectors, errno, strerror(errno)); |
255 |
} |
256 |
return -1; |
257 |
} |
258 |
s->lseek_err_cnt = 0;
|
259 |
|
260 |
ret = write(s->fd, buf, count); |
261 |
if (ret == count)
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goto label__raw_write__success;
|
263 |
|
264 |
DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
265 |
"] write failed %d : %d = %s\n",
|
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s->fd, bs->filename, offset, buf, count, |
267 |
bs->total_sectors, ret, errno, strerror(errno)); |
268 |
|
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label__raw_write__success:
|
270 |
|
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return ret;
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} |
273 |
|
274 |
|
275 |
#if defined(O_DIRECT) && !defined(QEMU_IMG)
|
276 |
/*
|
277 |
* offset and count are in bytes and possibly not aligned. For files opened
|
278 |
* with O_DIRECT, necessary alignments are ensured before calling
|
279 |
* raw_pread_aligned to do the actual read.
|
280 |
*/
|
281 |
static int raw_pread(BlockDriverState *bs, int64_t offset, |
282 |
uint8_t *buf, int count)
|
283 |
{ |
284 |
BDRVRawState *s = bs->opaque; |
285 |
int size, ret, shift, sum;
|
286 |
|
287 |
sum = 0;
|
288 |
|
289 |
if (s->aligned_buf != NULL) { |
290 |
|
291 |
if (offset & 0x1ff) { |
292 |
/* align offset on a 512 bytes boundary */
|
293 |
|
294 |
shift = offset & 0x1ff;
|
295 |
size = (shift + count + 0x1ff) & ~0x1ff; |
296 |
if (size > ALIGNED_BUFFER_SIZE)
|
297 |
size = ALIGNED_BUFFER_SIZE; |
298 |
ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, size); |
299 |
if (ret < 0) |
300 |
return ret;
|
301 |
|
302 |
size = 512 - shift;
|
303 |
if (size > count)
|
304 |
size = count; |
305 |
memcpy(buf, s->aligned_buf + shift, size); |
306 |
|
307 |
buf += size; |
308 |
offset += size; |
309 |
count -= size; |
310 |
sum += size; |
311 |
|
312 |
if (count == 0) |
313 |
return sum;
|
314 |
} |
315 |
if (count & 0x1ff || (uintptr_t) buf & 0x1ff) { |
316 |
|
317 |
/* read on aligned buffer */
|
318 |
|
319 |
while (count) {
|
320 |
|
321 |
size = (count + 0x1ff) & ~0x1ff; |
322 |
if (size > ALIGNED_BUFFER_SIZE)
|
323 |
size = ALIGNED_BUFFER_SIZE; |
324 |
|
325 |
ret = raw_pread_aligned(bs, offset, s->aligned_buf, size); |
326 |
if (ret < 0) |
327 |
return ret;
|
328 |
|
329 |
size = ret; |
330 |
if (size > count)
|
331 |
size = count; |
332 |
|
333 |
memcpy(buf, s->aligned_buf, size); |
334 |
|
335 |
buf += size; |
336 |
offset += size; |
337 |
count -= size; |
338 |
sum += size; |
339 |
} |
340 |
|
341 |
return sum;
|
342 |
} |
343 |
} |
344 |
|
345 |
return raw_pread_aligned(bs, offset, buf, count) + sum;
|
346 |
} |
347 |
|
348 |
/*
|
349 |
* offset and count are in bytes and possibly not aligned. For files opened
|
350 |
* with O_DIRECT, necessary alignments are ensured before calling
|
351 |
* raw_pwrite_aligned to do the actual write.
|
352 |
*/
|
353 |
static int raw_pwrite(BlockDriverState *bs, int64_t offset, |
354 |
const uint8_t *buf, int count) |
355 |
{ |
356 |
BDRVRawState *s = bs->opaque; |
357 |
int size, ret, shift, sum;
|
358 |
|
359 |
sum = 0;
|
360 |
|
361 |
if (s->aligned_buf != NULL) { |
362 |
|
363 |
if (offset & 0x1ff) { |
364 |
/* align offset on a 512 bytes boundary */
|
365 |
shift = offset & 0x1ff;
|
366 |
ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, 512);
|
367 |
if (ret < 0) |
368 |
return ret;
|
369 |
|
370 |
size = 512 - shift;
|
371 |
if (size > count)
|
372 |
size = count; |
373 |
memcpy(s->aligned_buf + shift, buf, size); |
374 |
|
375 |
ret = raw_pwrite_aligned(bs, offset - shift, s->aligned_buf, 512);
|
376 |
if (ret < 0) |
377 |
return ret;
|
378 |
|
379 |
buf += size; |
380 |
offset += size; |
381 |
count -= size; |
382 |
sum += size; |
383 |
|
384 |
if (count == 0) |
385 |
return sum;
|
386 |
} |
387 |
if (count & 0x1ff || (uintptr_t) buf & 0x1ff) { |
388 |
|
389 |
while ((size = (count & ~0x1ff)) != 0) { |
390 |
|
391 |
if (size > ALIGNED_BUFFER_SIZE)
|
392 |
size = ALIGNED_BUFFER_SIZE; |
393 |
|
394 |
memcpy(s->aligned_buf, buf, size); |
395 |
|
396 |
ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, size); |
397 |
if (ret < 0) |
398 |
return ret;
|
399 |
|
400 |
buf += ret; |
401 |
offset += ret; |
402 |
count -= ret; |
403 |
sum += ret; |
404 |
} |
405 |
/* here, count < 512 because (count & ~0x1ff) == 0 */
|
406 |
if (count) {
|
407 |
ret = raw_pread_aligned(bs, offset, s->aligned_buf, 512);
|
408 |
if (ret < 0) |
409 |
return ret;
|
410 |
memcpy(s->aligned_buf, buf, count); |
411 |
|
412 |
ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, 512);
|
413 |
if (ret < 0) |
414 |
return ret;
|
415 |
if (count < ret)
|
416 |
ret = count; |
417 |
|
418 |
sum += ret; |
419 |
} |
420 |
return sum;
|
421 |
} |
422 |
} |
423 |
return raw_pwrite_aligned(bs, offset, buf, count) + sum;
|
424 |
} |
425 |
|
426 |
#else
|
427 |
#define raw_pread raw_pread_aligned
|
428 |
#define raw_pwrite raw_pwrite_aligned
|
429 |
#endif
|
430 |
|
431 |
|
432 |
#ifdef CONFIG_AIO
|
433 |
/***********************************************************/
|
434 |
/* Unix AIO using POSIX AIO */
|
435 |
|
436 |
typedef struct RawAIOCB { |
437 |
BlockDriverAIOCB common; |
438 |
struct aiocb aiocb;
|
439 |
struct RawAIOCB *next;
|
440 |
int ret;
|
441 |
} RawAIOCB; |
442 |
|
443 |
static int aio_sig_fd = -1; |
444 |
static int aio_sig_num = SIGUSR2; |
445 |
static RawAIOCB *first_aio; /* AIO issued */ |
446 |
static int aio_initialized = 0; |
447 |
|
448 |
static void qemu_aio_poll(void *opaque) |
449 |
{ |
450 |
RawAIOCB *acb, **pacb; |
451 |
int ret;
|
452 |
size_t offset; |
453 |
union {
|
454 |
struct qemu_signalfd_siginfo siginfo;
|
455 |
char buf[128]; |
456 |
} sig; |
457 |
|
458 |
/* try to read from signalfd, don't freak out if we can't read anything */
|
459 |
offset = 0;
|
460 |
while (offset < 128) { |
461 |
ssize_t len; |
462 |
|
463 |
len = read(aio_sig_fd, sig.buf + offset, 128 - offset);
|
464 |
if (len == -1 && errno == EINTR) |
465 |
continue;
|
466 |
if (len == -1 && errno == EAGAIN) { |
467 |
/* there is no natural reason for this to happen,
|
468 |
* so we'll spin hard until we get everything just
|
469 |
* to be on the safe side. */
|
470 |
if (offset > 0) |
471 |
continue;
|
472 |
} |
473 |
|
474 |
offset += len; |
475 |
} |
476 |
|
477 |
for(;;) {
|
478 |
pacb = &first_aio; |
479 |
for(;;) {
|
480 |
acb = *pacb; |
481 |
if (!acb)
|
482 |
goto the_end;
|
483 |
ret = aio_error(&acb->aiocb); |
484 |
if (ret == ECANCELED) {
|
485 |
/* remove the request */
|
486 |
*pacb = acb->next; |
487 |
qemu_aio_release(acb); |
488 |
} else if (ret != EINPROGRESS) { |
489 |
/* end of aio */
|
490 |
if (ret == 0) { |
491 |
ret = aio_return(&acb->aiocb); |
492 |
if (ret == acb->aiocb.aio_nbytes)
|
493 |
ret = 0;
|
494 |
else
|
495 |
ret = -EINVAL; |
496 |
} else {
|
497 |
ret = -ret; |
498 |
} |
499 |
/* remove the request */
|
500 |
*pacb = acb->next; |
501 |
/* call the callback */
|
502 |
acb->common.cb(acb->common.opaque, ret); |
503 |
qemu_aio_release(acb); |
504 |
break;
|
505 |
} else {
|
506 |
pacb = &acb->next; |
507 |
} |
508 |
} |
509 |
} |
510 |
the_end: ;
|
511 |
} |
512 |
|
513 |
void qemu_aio_init(void) |
514 |
{ |
515 |
sigset_t mask; |
516 |
|
517 |
aio_initialized = 1;
|
518 |
|
519 |
/* Make sure to block AIO signal */
|
520 |
sigemptyset(&mask); |
521 |
sigaddset(&mask, aio_sig_num); |
522 |
sigprocmask(SIG_BLOCK, &mask, NULL);
|
523 |
|
524 |
aio_sig_fd = qemu_signalfd(&mask); |
525 |
|
526 |
fcntl(aio_sig_fd, F_SETFL, O_NONBLOCK); |
527 |
|
528 |
#if !defined(QEMU_IMG) && !defined(QEMU_NBD)
|
529 |
qemu_set_fd_handler2(aio_sig_fd, NULL, qemu_aio_poll, NULL, NULL); |
530 |
#endif
|
531 |
|
532 |
#if defined(__GLIBC__) && defined(__linux__)
|
533 |
{ |
534 |
/* XXX: aio thread exit seems to hang on RedHat 9 and this init
|
535 |
seems to fix the problem. */
|
536 |
struct aioinit ai;
|
537 |
memset(&ai, 0, sizeof(ai)); |
538 |
ai.aio_threads = 1;
|
539 |
ai.aio_num = 1;
|
540 |
ai.aio_idle_time = 365 * 100000; |
541 |
aio_init(&ai); |
542 |
} |
543 |
#endif
|
544 |
} |
545 |
|
546 |
/* Wait for all IO requests to complete. */
|
547 |
void qemu_aio_flush(void) |
548 |
{ |
549 |
qemu_aio_poll(NULL);
|
550 |
while (first_aio) {
|
551 |
qemu_aio_wait(); |
552 |
} |
553 |
} |
554 |
|
555 |
void qemu_aio_wait(void) |
556 |
{ |
557 |
int ret;
|
558 |
|
559 |
#if !defined(QEMU_IMG) && !defined(QEMU_NBD)
|
560 |
if (qemu_bh_poll())
|
561 |
return;
|
562 |
#endif
|
563 |
|
564 |
if (!first_aio)
|
565 |
return;
|
566 |
|
567 |
do {
|
568 |
fd_set rdfds; |
569 |
|
570 |
FD_ZERO(&rdfds); |
571 |
FD_SET(aio_sig_fd, &rdfds); |
572 |
|
573 |
ret = select(aio_sig_fd + 1, &rdfds, NULL, NULL, NULL); |
574 |
if (ret == -1 && errno == EINTR) |
575 |
continue;
|
576 |
} while (ret == 0); |
577 |
|
578 |
qemu_aio_poll(NULL);
|
579 |
} |
580 |
|
581 |
static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
|
582 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
583 |
BlockDriverCompletionFunc *cb, void *opaque)
|
584 |
{ |
585 |
BDRVRawState *s = bs->opaque; |
586 |
RawAIOCB *acb; |
587 |
|
588 |
if (fd_open(bs) < 0) |
589 |
return NULL; |
590 |
|
591 |
acb = qemu_aio_get(bs, cb, opaque); |
592 |
if (!acb)
|
593 |
return NULL; |
594 |
acb->aiocb.aio_fildes = s->fd; |
595 |
acb->aiocb.aio_sigevent.sigev_signo = aio_sig_num; |
596 |
acb->aiocb.aio_sigevent.sigev_notify = SIGEV_SIGNAL; |
597 |
acb->aiocb.aio_buf = buf; |
598 |
if (nb_sectors < 0) |
599 |
acb->aiocb.aio_nbytes = -nb_sectors; |
600 |
else
|
601 |
acb->aiocb.aio_nbytes = nb_sectors * 512;
|
602 |
acb->aiocb.aio_offset = sector_num * 512;
|
603 |
acb->next = first_aio; |
604 |
first_aio = acb; |
605 |
return acb;
|
606 |
} |
607 |
|
608 |
#if !defined(QEMU_IMG) && !defined(QEMU_NBD)
|
609 |
static void raw_aio_em_cb(void* opaque) |
610 |
{ |
611 |
RawAIOCB *acb = opaque; |
612 |
acb->common.cb(acb->common.opaque, acb->ret); |
613 |
qemu_aio_release(acb); |
614 |
} |
615 |
#endif
|
616 |
|
617 |
static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
|
618 |
int64_t sector_num, uint8_t *buf, int nb_sectors,
|
619 |
BlockDriverCompletionFunc *cb, void *opaque)
|
620 |
{ |
621 |
RawAIOCB *acb; |
622 |
|
623 |
/*
|
624 |
* If O_DIRECT is used and the buffer is not aligned fall back
|
625 |
* to synchronous IO.
|
626 |
*/
|
627 |
#if defined(O_DIRECT) && !defined(QEMU_IMG) && !defined(QEMU_NBD)
|
628 |
BDRVRawState *s = bs->opaque; |
629 |
|
630 |
if (unlikely(s->aligned_buf != NULL && ((uintptr_t) buf % 512))) { |
631 |
QEMUBH *bh; |
632 |
acb = qemu_aio_get(bs, cb, opaque); |
633 |
acb->ret = raw_pread(bs, 512 * sector_num, buf, 512 * nb_sectors); |
634 |
bh = qemu_bh_new(raw_aio_em_cb, acb); |
635 |
qemu_bh_schedule(bh); |
636 |
return &acb->common;
|
637 |
} |
638 |
#endif
|
639 |
|
640 |
acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
641 |
if (!acb)
|
642 |
return NULL; |
643 |
if (aio_read(&acb->aiocb) < 0) { |
644 |
qemu_aio_release(acb); |
645 |
return NULL; |
646 |
} |
647 |
return &acb->common;
|
648 |
} |
649 |
|
650 |
static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
|
651 |
int64_t sector_num, const uint8_t *buf, int nb_sectors, |
652 |
BlockDriverCompletionFunc *cb, void *opaque)
|
653 |
{ |
654 |
RawAIOCB *acb; |
655 |
|
656 |
/*
|
657 |
* If O_DIRECT is used and the buffer is not aligned fall back
|
658 |
* to synchronous IO.
|
659 |
*/
|
660 |
#if defined(O_DIRECT) && !defined(QEMU_IMG) && !defined(QEMU_NBD)
|
661 |
BDRVRawState *s = bs->opaque; |
662 |
|
663 |
if (unlikely(s->aligned_buf != NULL && ((uintptr_t) buf % 512))) { |
664 |
QEMUBH *bh; |
665 |
acb = qemu_aio_get(bs, cb, opaque); |
666 |
acb->ret = raw_pwrite(bs, 512 * sector_num, buf, 512 * nb_sectors); |
667 |
bh = qemu_bh_new(raw_aio_em_cb, acb); |
668 |
qemu_bh_schedule(bh); |
669 |
return &acb->common;
|
670 |
} |
671 |
#endif
|
672 |
|
673 |
acb = raw_aio_setup(bs, sector_num, (uint8_t*)buf, nb_sectors, cb, opaque); |
674 |
if (!acb)
|
675 |
return NULL; |
676 |
if (aio_write(&acb->aiocb) < 0) { |
677 |
qemu_aio_release(acb); |
678 |
return NULL; |
679 |
} |
680 |
return &acb->common;
|
681 |
} |
682 |
|
683 |
static void raw_aio_cancel(BlockDriverAIOCB *blockacb) |
684 |
{ |
685 |
int ret;
|
686 |
RawAIOCB *acb = (RawAIOCB *)blockacb; |
687 |
RawAIOCB **pacb; |
688 |
|
689 |
ret = aio_cancel(acb->aiocb.aio_fildes, &acb->aiocb); |
690 |
if (ret == AIO_NOTCANCELED) {
|
691 |
/* fail safe: if the aio could not be canceled, we wait for
|
692 |
it */
|
693 |
while (aio_error(&acb->aiocb) == EINPROGRESS);
|
694 |
} |
695 |
|
696 |
/* remove the callback from the queue */
|
697 |
pacb = &first_aio; |
698 |
for(;;) {
|
699 |
if (*pacb == NULL) { |
700 |
break;
|
701 |
} else if (*pacb == acb) { |
702 |
*pacb = acb->next; |
703 |
qemu_aio_release(acb); |
704 |
break;
|
705 |
} |
706 |
pacb = &acb->next; |
707 |
} |
708 |
} |
709 |
|
710 |
# else /* CONFIG_AIO */ |
711 |
|
712 |
void qemu_aio_init(void) |
713 |
{ |
714 |
} |
715 |
|
716 |
void qemu_aio_flush(void) |
717 |
{ |
718 |
} |
719 |
|
720 |
void qemu_aio_wait(void) |
721 |
{ |
722 |
#if !defined(QEMU_IMG) && !defined(QEMU_NBD)
|
723 |
qemu_bh_poll(); |
724 |
#endif
|
725 |
} |
726 |
|
727 |
#endif /* CONFIG_AIO */ |
728 |
|
729 |
static void raw_close(BlockDriverState *bs) |
730 |
{ |
731 |
BDRVRawState *s = bs->opaque; |
732 |
if (s->fd >= 0) { |
733 |
close(s->fd); |
734 |
s->fd = -1;
|
735 |
#if defined(O_DIRECT) && !defined(QEMU_IMG)
|
736 |
if (s->aligned_buf != NULL) |
737 |
qemu_free(s->aligned_buf); |
738 |
#endif
|
739 |
} |
740 |
} |
741 |
|
742 |
static int raw_truncate(BlockDriverState *bs, int64_t offset) |
743 |
{ |
744 |
BDRVRawState *s = bs->opaque; |
745 |
if (s->type != FTYPE_FILE)
|
746 |
return -ENOTSUP;
|
747 |
if (ftruncate(s->fd, offset) < 0) |
748 |
return -errno;
|
749 |
return 0; |
750 |
} |
751 |
|
752 |
#ifdef __OpenBSD__
|
753 |
static int64_t raw_getlength(BlockDriverState *bs)
|
754 |
{ |
755 |
BDRVRawState *s = bs->opaque; |
756 |
int fd = s->fd;
|
757 |
struct stat st;
|
758 |
|
759 |
if (fstat(fd, &st))
|
760 |
return -1; |
761 |
if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) {
|
762 |
struct disklabel dl;
|
763 |
|
764 |
if (ioctl(fd, DIOCGDINFO, &dl))
|
765 |
return -1; |
766 |
return (uint64_t)dl.d_secsize *
|
767 |
dl.d_partitions[DISKPART(st.st_rdev)].p_size; |
768 |
} else
|
769 |
return st.st_size;
|
770 |
} |
771 |
#else /* !__OpenBSD__ */ |
772 |
static int64_t raw_getlength(BlockDriverState *bs)
|
773 |
{ |
774 |
BDRVRawState *s = bs->opaque; |
775 |
int fd = s->fd;
|
776 |
int64_t size; |
777 |
#ifdef _BSD
|
778 |
struct stat sb;
|
779 |
#endif
|
780 |
#ifdef __sun__
|
781 |
struct dk_minfo minfo;
|
782 |
int rv;
|
783 |
#endif
|
784 |
int ret;
|
785 |
|
786 |
ret = fd_open(bs); |
787 |
if (ret < 0) |
788 |
return ret;
|
789 |
|
790 |
#ifdef _BSD
|
791 |
if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
|
792 |
#ifdef DIOCGMEDIASIZE
|
793 |
if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
|
794 |
#endif
|
795 |
#ifdef CONFIG_COCOA
|
796 |
size = LONG_LONG_MAX; |
797 |
#else
|
798 |
size = lseek(fd, 0LL, SEEK_END);
|
799 |
#endif
|
800 |
} else
|
801 |
#endif
|
802 |
#ifdef __sun__
|
803 |
/*
|
804 |
* use the DKIOCGMEDIAINFO ioctl to read the size.
|
805 |
*/
|
806 |
rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo ); |
807 |
if ( rv != -1 ) { |
808 |
size = minfo.dki_lbsize * minfo.dki_capacity; |
809 |
} else /* there are reports that lseek on some devices |
810 |
fails, but irc discussion said that contingency
|
811 |
on contingency was overkill */
|
812 |
#endif
|
813 |
{ |
814 |
size = lseek(fd, 0, SEEK_END);
|
815 |
} |
816 |
return size;
|
817 |
} |
818 |
#endif
|
819 |
|
820 |
static int raw_create(const char *filename, int64_t total_size, |
821 |
const char *backing_file, int flags) |
822 |
{ |
823 |
int fd;
|
824 |
|
825 |
if (flags || backing_file)
|
826 |
return -ENOTSUP;
|
827 |
|
828 |
fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
829 |
0644);
|
830 |
if (fd < 0) |
831 |
return -EIO;
|
832 |
ftruncate(fd, total_size * 512);
|
833 |
close(fd); |
834 |
return 0; |
835 |
} |
836 |
|
837 |
static void raw_flush(BlockDriverState *bs) |
838 |
{ |
839 |
BDRVRawState *s = bs->opaque; |
840 |
fsync(s->fd); |
841 |
} |
842 |
|
843 |
BlockDriver bdrv_raw = { |
844 |
"raw",
|
845 |
sizeof(BDRVRawState),
|
846 |
NULL, /* no probe for protocols */ |
847 |
raw_open, |
848 |
NULL,
|
849 |
NULL,
|
850 |
raw_close, |
851 |
raw_create, |
852 |
raw_flush, |
853 |
|
854 |
#ifdef CONFIG_AIO
|
855 |
.bdrv_aio_read = raw_aio_read, |
856 |
.bdrv_aio_write = raw_aio_write, |
857 |
.bdrv_aio_cancel = raw_aio_cancel, |
858 |
.aiocb_size = sizeof(RawAIOCB),
|
859 |
#endif
|
860 |
.protocol_name = "file",
|
861 |
.bdrv_pread = raw_pread, |
862 |
.bdrv_pwrite = raw_pwrite, |
863 |
.bdrv_truncate = raw_truncate, |
864 |
.bdrv_getlength = raw_getlength, |
865 |
}; |
866 |
|
867 |
/***********************************************/
|
868 |
/* host device */
|
869 |
|
870 |
#ifdef CONFIG_COCOA
|
871 |
static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator );
|
872 |
static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ); |
873 |
|
874 |
kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ) |
875 |
{ |
876 |
kern_return_t kernResult; |
877 |
mach_port_t masterPort; |
878 |
CFMutableDictionaryRef classesToMatch; |
879 |
|
880 |
kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort ); |
881 |
if ( KERN_SUCCESS != kernResult ) {
|
882 |
printf( "IOMasterPort returned %d\n", kernResult );
|
883 |
} |
884 |
|
885 |
classesToMatch = IOServiceMatching( kIOCDMediaClass ); |
886 |
if ( classesToMatch == NULL ) { |
887 |
printf( "IOServiceMatching returned a NULL dictionary.\n" );
|
888 |
} else {
|
889 |
CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue ); |
890 |
} |
891 |
kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator ); |
892 |
if ( KERN_SUCCESS != kernResult )
|
893 |
{ |
894 |
printf( "IOServiceGetMatchingServices returned %d\n", kernResult );
|
895 |
} |
896 |
|
897 |
return kernResult;
|
898 |
} |
899 |
|
900 |
kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize )
|
901 |
{ |
902 |
io_object_t nextMedia; |
903 |
kern_return_t kernResult = KERN_FAILURE; |
904 |
*bsdPath = '\0';
|
905 |
nextMedia = IOIteratorNext( mediaIterator ); |
906 |
if ( nextMedia )
|
907 |
{ |
908 |
CFTypeRef bsdPathAsCFString; |
909 |
bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 );
|
910 |
if ( bsdPathAsCFString ) {
|
911 |
size_t devPathLength; |
912 |
strcpy( bsdPath, _PATH_DEV ); |
913 |
strcat( bsdPath, "r" );
|
914 |
devPathLength = strlen( bsdPath ); |
915 |
if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) {
|
916 |
kernResult = KERN_SUCCESS; |
917 |
} |
918 |
CFRelease( bsdPathAsCFString ); |
919 |
} |
920 |
IOObjectRelease( nextMedia ); |
921 |
} |
922 |
|
923 |
return kernResult;
|
924 |
} |
925 |
|
926 |
#endif
|
927 |
|
928 |
static int hdev_open(BlockDriverState *bs, const char *filename, int flags) |
929 |
{ |
930 |
BDRVRawState *s = bs->opaque; |
931 |
int fd, open_flags, ret;
|
932 |
|
933 |
#ifdef CONFIG_COCOA
|
934 |
if (strstart(filename, "/dev/cdrom", NULL)) { |
935 |
kern_return_t kernResult; |
936 |
io_iterator_t mediaIterator; |
937 |
char bsdPath[ MAXPATHLEN ];
|
938 |
int fd;
|
939 |
|
940 |
kernResult = FindEjectableCDMedia( &mediaIterator ); |
941 |
kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) );
|
942 |
|
943 |
if ( bsdPath[ 0 ] != '\0' ) { |
944 |
strcat(bsdPath,"s0");
|
945 |
/* some CDs don't have a partition 0 */
|
946 |
fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE); |
947 |
if (fd < 0) { |
948 |
bsdPath[strlen(bsdPath)-1] = '1'; |
949 |
} else {
|
950 |
close(fd); |
951 |
} |
952 |
filename = bsdPath; |
953 |
} |
954 |
|
955 |
if ( mediaIterator )
|
956 |
IOObjectRelease( mediaIterator ); |
957 |
} |
958 |
#endif
|
959 |
open_flags = O_BINARY; |
960 |
if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
961 |
open_flags |= O_RDWR; |
962 |
} else {
|
963 |
open_flags |= O_RDONLY; |
964 |
bs->read_only = 1;
|
965 |
} |
966 |
#ifdef O_DIRECT
|
967 |
if (flags & BDRV_O_DIRECT)
|
968 |
open_flags |= O_DIRECT; |
969 |
#endif
|
970 |
|
971 |
s->type = FTYPE_FILE; |
972 |
#if defined(__linux__)
|
973 |
if (strstart(filename, "/dev/cd", NULL)) { |
974 |
/* open will not fail even if no CD is inserted */
|
975 |
open_flags |= O_NONBLOCK; |
976 |
s->type = FTYPE_CD; |
977 |
} else if (strstart(filename, "/dev/fd", NULL)) { |
978 |
s->type = FTYPE_FD; |
979 |
s->fd_open_flags = open_flags; |
980 |
/* open will not fail even if no floppy is inserted */
|
981 |
open_flags |= O_NONBLOCK; |
982 |
} else if (strstart(filename, "/dev/sg", NULL)) { |
983 |
bs->sg = 1;
|
984 |
} |
985 |
#endif
|
986 |
fd = open(filename, open_flags, 0644);
|
987 |
if (fd < 0) { |
988 |
ret = -errno; |
989 |
if (ret == -EROFS)
|
990 |
ret = -EACCES; |
991 |
return ret;
|
992 |
} |
993 |
s->fd = fd; |
994 |
#if defined(__linux__)
|
995 |
/* close fd so that we can reopen it as needed */
|
996 |
if (s->type == FTYPE_FD) {
|
997 |
close(s->fd); |
998 |
s->fd = -1;
|
999 |
s->fd_media_changed = 1;
|
1000 |
} |
1001 |
#endif
|
1002 |
return 0; |
1003 |
} |
1004 |
|
1005 |
#if defined(__linux__) && !defined(QEMU_IMG) && !defined(QEMU_NBD)
|
1006 |
|
1007 |
/* Note: we do not have a reliable method to detect if the floppy is
|
1008 |
present. The current method is to try to open the floppy at every
|
1009 |
I/O and to keep it opened during a few hundreds of ms. */
|
1010 |
static int fd_open(BlockDriverState *bs) |
1011 |
{ |
1012 |
BDRVRawState *s = bs->opaque; |
1013 |
int last_media_present;
|
1014 |
|
1015 |
if (s->type != FTYPE_FD)
|
1016 |
return 0; |
1017 |
last_media_present = (s->fd >= 0);
|
1018 |
if (s->fd >= 0 && |
1019 |
(qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) { |
1020 |
close(s->fd); |
1021 |
s->fd = -1;
|
1022 |
#ifdef DEBUG_FLOPPY
|
1023 |
printf("Floppy closed\n");
|
1024 |
#endif
|
1025 |
} |
1026 |
if (s->fd < 0) { |
1027 |
if (s->fd_got_error &&
|
1028 |
(qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) { |
1029 |
#ifdef DEBUG_FLOPPY
|
1030 |
printf("No floppy (open delayed)\n");
|
1031 |
#endif
|
1032 |
return -EIO;
|
1033 |
} |
1034 |
s->fd = open(bs->filename, s->fd_open_flags); |
1035 |
if (s->fd < 0) { |
1036 |
s->fd_error_time = qemu_get_clock(rt_clock); |
1037 |
s->fd_got_error = 1;
|
1038 |
if (last_media_present)
|
1039 |
s->fd_media_changed = 1;
|
1040 |
#ifdef DEBUG_FLOPPY
|
1041 |
printf("No floppy\n");
|
1042 |
#endif
|
1043 |
return -EIO;
|
1044 |
} |
1045 |
#ifdef DEBUG_FLOPPY
|
1046 |
printf("Floppy opened\n");
|
1047 |
#endif
|
1048 |
} |
1049 |
if (!last_media_present)
|
1050 |
s->fd_media_changed = 1;
|
1051 |
s->fd_open_time = qemu_get_clock(rt_clock); |
1052 |
s->fd_got_error = 0;
|
1053 |
return 0; |
1054 |
} |
1055 |
#else
|
1056 |
static int fd_open(BlockDriverState *bs) |
1057 |
{ |
1058 |
return 0; |
1059 |
} |
1060 |
#endif
|
1061 |
|
1062 |
#if defined(__linux__)
|
1063 |
|
1064 |
static int raw_is_inserted(BlockDriverState *bs) |
1065 |
{ |
1066 |
BDRVRawState *s = bs->opaque; |
1067 |
int ret;
|
1068 |
|
1069 |
switch(s->type) {
|
1070 |
case FTYPE_CD:
|
1071 |
ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); |
1072 |
if (ret == CDS_DISC_OK)
|
1073 |
return 1; |
1074 |
else
|
1075 |
return 0; |
1076 |
break;
|
1077 |
case FTYPE_FD:
|
1078 |
ret = fd_open(bs); |
1079 |
return (ret >= 0); |
1080 |
default:
|
1081 |
return 1; |
1082 |
} |
1083 |
} |
1084 |
|
1085 |
/* currently only used by fdc.c, but a CD version would be good too */
|
1086 |
static int raw_media_changed(BlockDriverState *bs) |
1087 |
{ |
1088 |
BDRVRawState *s = bs->opaque; |
1089 |
|
1090 |
switch(s->type) {
|
1091 |
case FTYPE_FD:
|
1092 |
{ |
1093 |
int ret;
|
1094 |
/* XXX: we do not have a true media changed indication. It
|
1095 |
does not work if the floppy is changed without trying
|
1096 |
to read it */
|
1097 |
fd_open(bs); |
1098 |
ret = s->fd_media_changed; |
1099 |
s->fd_media_changed = 0;
|
1100 |
#ifdef DEBUG_FLOPPY
|
1101 |
printf("Floppy changed=%d\n", ret);
|
1102 |
#endif
|
1103 |
return ret;
|
1104 |
} |
1105 |
default:
|
1106 |
return -ENOTSUP;
|
1107 |
} |
1108 |
} |
1109 |
|
1110 |
static int raw_eject(BlockDriverState *bs, int eject_flag) |
1111 |
{ |
1112 |
BDRVRawState *s = bs->opaque; |
1113 |
|
1114 |
switch(s->type) {
|
1115 |
case FTYPE_CD:
|
1116 |
if (eject_flag) {
|
1117 |
if (ioctl (s->fd, CDROMEJECT, NULL) < 0) |
1118 |
perror("CDROMEJECT");
|
1119 |
} else {
|
1120 |
if (ioctl (s->fd, CDROMCLOSETRAY, NULL) < 0) |
1121 |
perror("CDROMEJECT");
|
1122 |
} |
1123 |
break;
|
1124 |
case FTYPE_FD:
|
1125 |
{ |
1126 |
int fd;
|
1127 |
if (s->fd >= 0) { |
1128 |
close(s->fd); |
1129 |
s->fd = -1;
|
1130 |
} |
1131 |
fd = open(bs->filename, s->fd_open_flags | O_NONBLOCK); |
1132 |
if (fd >= 0) { |
1133 |
if (ioctl(fd, FDEJECT, 0) < 0) |
1134 |
perror("FDEJECT");
|
1135 |
close(fd); |
1136 |
} |
1137 |
} |
1138 |
break;
|
1139 |
default:
|
1140 |
return -ENOTSUP;
|
1141 |
} |
1142 |
return 0; |
1143 |
} |
1144 |
|
1145 |
static int raw_set_locked(BlockDriverState *bs, int locked) |
1146 |
{ |
1147 |
BDRVRawState *s = bs->opaque; |
1148 |
|
1149 |
switch(s->type) {
|
1150 |
case FTYPE_CD:
|
1151 |
if (ioctl (s->fd, CDROM_LOCKDOOR, locked) < 0) { |
1152 |
/* Note: an error can happen if the distribution automatically
|
1153 |
mounts the CD-ROM */
|
1154 |
// perror("CDROM_LOCKDOOR");
|
1155 |
} |
1156 |
break;
|
1157 |
default:
|
1158 |
return -ENOTSUP;
|
1159 |
} |
1160 |
return 0; |
1161 |
} |
1162 |
|
1163 |
static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
1164 |
{ |
1165 |
BDRVRawState *s = bs->opaque; |
1166 |
|
1167 |
return ioctl(s->fd, req, buf);
|
1168 |
} |
1169 |
#else
|
1170 |
|
1171 |
static int raw_is_inserted(BlockDriverState *bs) |
1172 |
{ |
1173 |
return 1; |
1174 |
} |
1175 |
|
1176 |
static int raw_media_changed(BlockDriverState *bs) |
1177 |
{ |
1178 |
return -ENOTSUP;
|
1179 |
} |
1180 |
|
1181 |
static int raw_eject(BlockDriverState *bs, int eject_flag) |
1182 |
{ |
1183 |
return -ENOTSUP;
|
1184 |
} |
1185 |
|
1186 |
static int raw_set_locked(BlockDriverState *bs, int locked) |
1187 |
{ |
1188 |
return -ENOTSUP;
|
1189 |
} |
1190 |
|
1191 |
static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
1192 |
{ |
1193 |
return -ENOTSUP;
|
1194 |
} |
1195 |
#endif /* !linux */ |
1196 |
|
1197 |
BlockDriver bdrv_host_device = { |
1198 |
"host_device",
|
1199 |
sizeof(BDRVRawState),
|
1200 |
NULL, /* no probe for protocols */ |
1201 |
hdev_open, |
1202 |
NULL,
|
1203 |
NULL,
|
1204 |
raw_close, |
1205 |
NULL,
|
1206 |
raw_flush, |
1207 |
|
1208 |
#ifdef CONFIG_AIO
|
1209 |
.bdrv_aio_read = raw_aio_read, |
1210 |
.bdrv_aio_write = raw_aio_write, |
1211 |
.bdrv_aio_cancel = raw_aio_cancel, |
1212 |
.aiocb_size = sizeof(RawAIOCB),
|
1213 |
#endif
|
1214 |
.bdrv_pread = raw_pread, |
1215 |
.bdrv_pwrite = raw_pwrite, |
1216 |
.bdrv_getlength = raw_getlength, |
1217 |
|
1218 |
/* removable device support */
|
1219 |
.bdrv_is_inserted = raw_is_inserted, |
1220 |
.bdrv_media_changed = raw_media_changed, |
1221 |
.bdrv_eject = raw_eject, |
1222 |
.bdrv_set_locked = raw_set_locked, |
1223 |
/* generic scsi device */
|
1224 |
.bdrv_ioctl = raw_ioctl, |
1225 |
}; |