root / block / raw-posix.c @ 7a3f5fe9
History | View | Annotate | Download (39.8 kB)
1 | 83f64091 | bellard | /*
|
---|---|---|---|
2 | 223d4670 | ths | * Block driver for RAW files (posix)
|
3 | 5fafdf24 | ths | *
|
4 | 83f64091 | bellard | * Copyright (c) 2006 Fabrice Bellard
|
5 | 5fafdf24 | ths | *
|
6 | 83f64091 | bellard | * Permission is hereby granted, free of charge, to any person obtaining a copy
|
7 | 83f64091 | bellard | * of this software and associated documentation files (the "Software"), to deal
|
8 | 83f64091 | bellard | * in the Software without restriction, including without limitation the rights
|
9 | 83f64091 | bellard | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
10 | 83f64091 | bellard | * copies of the Software, and to permit persons to whom the Software is
|
11 | 83f64091 | bellard | * furnished to do so, subject to the following conditions:
|
12 | 83f64091 | bellard | *
|
13 | 83f64091 | bellard | * The above copyright notice and this permission notice shall be included in
|
14 | 83f64091 | bellard | * all copies or substantial portions of the Software.
|
15 | 83f64091 | bellard | *
|
16 | 83f64091 | bellard | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
17 | 83f64091 | bellard | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
18 | 83f64091 | bellard | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
19 | 83f64091 | bellard | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
20 | 83f64091 | bellard | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
21 | 83f64091 | bellard | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
22 | 83f64091 | bellard | * THE SOFTWARE.
|
23 | 83f64091 | bellard | */
|
24 | faf07963 | pbrook | #include "qemu-common.h" |
25 | 87ecb68b | pbrook | #include "qemu-timer.h" |
26 | baf35cb9 | aliguori | #include "qemu-char.h" |
27 | 0bf9e31a | Blue Swirl | #include "qemu-log.h" |
28 | 83f64091 | bellard | #include "block_int.h" |
29 | 5efa9d5a | Anthony Liguori | #include "module.h" |
30 | 9ef91a67 | Christoph Hellwig | #include "block/raw-posix-aio.h" |
31 | 83f64091 | bellard | |
32 | 83f64091 | bellard | #ifdef CONFIG_COCOA
|
33 | 83f64091 | bellard | #include <paths.h> |
34 | 83f64091 | bellard | #include <sys/param.h> |
35 | 83f64091 | bellard | #include <IOKit/IOKitLib.h> |
36 | 83f64091 | bellard | #include <IOKit/IOBSD.h> |
37 | 83f64091 | bellard | #include <IOKit/storage/IOMediaBSDClient.h> |
38 | 83f64091 | bellard | #include <IOKit/storage/IOMedia.h> |
39 | 83f64091 | bellard | #include <IOKit/storage/IOCDMedia.h> |
40 | 83f64091 | bellard | //#include <IOKit/storage/IOCDTypes.h>
|
41 | 83f64091 | bellard | #include <CoreFoundation/CoreFoundation.h> |
42 | 83f64091 | bellard | #endif
|
43 | 83f64091 | bellard | |
44 | 83f64091 | bellard | #ifdef __sun__
|
45 | 2e9671da | ths | #define _POSIX_PTHREAD_SEMANTICS 1 |
46 | 83f64091 | bellard | #include <sys/dkio.h> |
47 | 83f64091 | bellard | #endif
|
48 | 19cb3738 | bellard | #ifdef __linux__
|
49 | 343f8568 | Johannes Stezenbach | #include <sys/types.h> |
50 | 343f8568 | Johannes Stezenbach | #include <sys/stat.h> |
51 | 19cb3738 | bellard | #include <sys/ioctl.h> |
52 | 05acda4d | Bernhard Kohl | #include <sys/param.h> |
53 | 19cb3738 | bellard | #include <linux/cdrom.h> |
54 | 19cb3738 | bellard | #include <linux/fd.h> |
55 | 19cb3738 | bellard | #endif
|
56 | a167ba50 | Aurelien Jarno | #if defined (__FreeBSD__) || defined(__FreeBSD_kernel__)
|
57 | 1cb6c3fd | ths | #include <sys/disk.h> |
58 | 9f23011a | blueswir1 | #include <sys/cdio.h> |
59 | 1cb6c3fd | ths | #endif
|
60 | 83f64091 | bellard | |
61 | 128ab2ff | blueswir1 | #ifdef __OpenBSD__
|
62 | 128ab2ff | blueswir1 | #include <sys/ioctl.h> |
63 | 128ab2ff | blueswir1 | #include <sys/disklabel.h> |
64 | 128ab2ff | blueswir1 | #include <sys/dkio.h> |
65 | 128ab2ff | blueswir1 | #endif
|
66 | 128ab2ff | blueswir1 | |
67 | d1f6fd8d | Christoph Egger | #ifdef __NetBSD__
|
68 | d1f6fd8d | Christoph Egger | #include <sys/ioctl.h> |
69 | d1f6fd8d | Christoph Egger | #include <sys/disklabel.h> |
70 | d1f6fd8d | Christoph Egger | #include <sys/dkio.h> |
71 | d1f6fd8d | Christoph Egger | #include <sys/disk.h> |
72 | d1f6fd8d | Christoph Egger | #endif
|
73 | d1f6fd8d | Christoph Egger | |
74 | c5e97233 | blueswir1 | #ifdef __DragonFly__
|
75 | c5e97233 | blueswir1 | #include <sys/ioctl.h> |
76 | c5e97233 | blueswir1 | #include <sys/diskslice.h> |
77 | c5e97233 | blueswir1 | #endif
|
78 | c5e97233 | blueswir1 | |
79 | dce512de | Christoph Hellwig | #ifdef CONFIG_XFS
|
80 | dce512de | Christoph Hellwig | #include <xfs/xfs.h> |
81 | dce512de | Christoph Hellwig | #endif
|
82 | dce512de | Christoph Hellwig | |
83 | 19cb3738 | bellard | //#define DEBUG_FLOPPY
|
84 | 83f64091 | bellard | |
85 | faf07963 | pbrook | //#define DEBUG_BLOCK
|
86 | 03ff3ca3 | aliguori | #if defined(DEBUG_BLOCK)
|
87 | 001faf32 | Blue Swirl | #define DEBUG_BLOCK_PRINT(formatCstr, ...) do { if (qemu_log_enabled()) \ |
88 | 001faf32 | Blue Swirl | { qemu_log(formatCstr, ## __VA_ARGS__); qemu_log_flush(); } } while (0) |
89 | 8c05dbf9 | ths | #else
|
90 | 001faf32 | Blue Swirl | #define DEBUG_BLOCK_PRINT(formatCstr, ...)
|
91 | 8c05dbf9 | ths | #endif
|
92 | 8c05dbf9 | ths | |
93 | f6465578 | aliguori | /* OS X does not have O_DSYNC */
|
94 | f6465578 | aliguori | #ifndef O_DSYNC
|
95 | 1c27a8b3 | G 3 | #ifdef O_SYNC
|
96 | 7ab064d2 | aliguori | #define O_DSYNC O_SYNC
|
97 | 1c27a8b3 | G 3 | #elif defined(O_FSYNC)
|
98 | 1c27a8b3 | G 3 | #define O_DSYNC O_FSYNC
|
99 | 1c27a8b3 | G 3 | #endif
|
100 | f6465578 | aliguori | #endif
|
101 | f6465578 | aliguori | |
102 | 9f7965c7 | aliguori | /* Approximate O_DIRECT with O_DSYNC if O_DIRECT isn't available */
|
103 | 9f7965c7 | aliguori | #ifndef O_DIRECT
|
104 | 9f7965c7 | aliguori | #define O_DIRECT O_DSYNC
|
105 | 9f7965c7 | aliguori | #endif
|
106 | 9f7965c7 | aliguori | |
107 | 19cb3738 | bellard | #define FTYPE_FILE 0 |
108 | 19cb3738 | bellard | #define FTYPE_CD 1 |
109 | 19cb3738 | bellard | #define FTYPE_FD 2 |
110 | 83f64091 | bellard | |
111 | c57c846a | Blue Swirl | /* if the FD is not accessed during that time (in ns), we try to
|
112 | 19cb3738 | bellard | reopen it to see if the disk has been changed */
|
113 | c57c846a | Blue Swirl | #define FD_OPEN_TIMEOUT (1000000000) |
114 | 83f64091 | bellard | |
115 | 581b9e29 | Christoph Hellwig | #define MAX_BLOCKSIZE 4096 |
116 | 581b9e29 | Christoph Hellwig | |
117 | 19cb3738 | bellard | typedef struct BDRVRawState { |
118 | 19cb3738 | bellard | int fd;
|
119 | 19cb3738 | bellard | int type;
|
120 | 0e1d8f4c | Christoph Hellwig | int open_flags;
|
121 | 19cb3738 | bellard | #if defined(__linux__)
|
122 | 19cb3738 | bellard | /* linux floppy specific */
|
123 | 19cb3738 | bellard | int64_t fd_open_time; |
124 | 19cb3738 | bellard | int64_t fd_error_time; |
125 | 19cb3738 | bellard | int fd_got_error;
|
126 | 19cb3738 | bellard | int fd_media_changed;
|
127 | 83f64091 | bellard | #endif
|
128 | e44bd6fc | Stefan Weil | #ifdef CONFIG_LINUX_AIO
|
129 | 5c6c3a6c | Christoph Hellwig | int use_aio;
|
130 | 1e5b9d2f | Kevin Wolf | void *aio_ctx;
|
131 | e44bd6fc | Stefan Weil | #endif
|
132 | 581b9e29 | Christoph Hellwig | uint8_t *aligned_buf; |
133 | 581b9e29 | Christoph Hellwig | unsigned aligned_buf_size;
|
134 | dce512de | Christoph Hellwig | #ifdef CONFIG_XFS
|
135 | dce512de | Christoph Hellwig | bool is_xfs : 1; |
136 | dce512de | Christoph Hellwig | #endif
|
137 | 19cb3738 | bellard | } BDRVRawState; |
138 | 19cb3738 | bellard | |
139 | 19cb3738 | bellard | static int fd_open(BlockDriverState *bs); |
140 | 22afa7b5 | Kevin Wolf | static int64_t raw_getlength(BlockDriverState *bs);
|
141 | 83f64091 | bellard | |
142 | a167ba50 | Aurelien Jarno | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
|
143 | f3a5d3f8 | Christoph Hellwig | static int cdrom_reopen(BlockDriverState *bs); |
144 | 9f23011a | blueswir1 | #endif
|
145 | 9f23011a | blueswir1 | |
146 | 1de1ae0a | Christoph Egger | #if defined(__NetBSD__)
|
147 | 1de1ae0a | Christoph Egger | static int raw_normalize_devicepath(const char **filename) |
148 | 1de1ae0a | Christoph Egger | { |
149 | 1de1ae0a | Christoph Egger | static char namebuf[PATH_MAX]; |
150 | 1de1ae0a | Christoph Egger | const char *dp, *fname; |
151 | 1de1ae0a | Christoph Egger | struct stat sb;
|
152 | 1de1ae0a | Christoph Egger | |
153 | 1de1ae0a | Christoph Egger | fname = *filename; |
154 | 1de1ae0a | Christoph Egger | dp = strrchr(fname, '/');
|
155 | 1de1ae0a | Christoph Egger | if (lstat(fname, &sb) < 0) { |
156 | 1de1ae0a | Christoph Egger | fprintf(stderr, "%s: stat failed: %s\n",
|
157 | 1de1ae0a | Christoph Egger | fname, strerror(errno)); |
158 | 1de1ae0a | Christoph Egger | return -errno;
|
159 | 1de1ae0a | Christoph Egger | } |
160 | 1de1ae0a | Christoph Egger | |
161 | 1de1ae0a | Christoph Egger | if (!S_ISBLK(sb.st_mode)) {
|
162 | 1de1ae0a | Christoph Egger | return 0; |
163 | 1de1ae0a | Christoph Egger | } |
164 | 1de1ae0a | Christoph Egger | |
165 | 1de1ae0a | Christoph Egger | if (dp == NULL) { |
166 | 1de1ae0a | Christoph Egger | snprintf(namebuf, PATH_MAX, "r%s", fname);
|
167 | 1de1ae0a | Christoph Egger | } else {
|
168 | 1de1ae0a | Christoph Egger | snprintf(namebuf, PATH_MAX, "%.*s/r%s",
|
169 | 1de1ae0a | Christoph Egger | (int)(dp - fname), fname, dp + 1); |
170 | 1de1ae0a | Christoph Egger | } |
171 | 1de1ae0a | Christoph Egger | fprintf(stderr, "%s is a block device", fname);
|
172 | 1de1ae0a | Christoph Egger | *filename = namebuf; |
173 | 1de1ae0a | Christoph Egger | fprintf(stderr, ", using %s\n", *filename);
|
174 | 1de1ae0a | Christoph Egger | |
175 | 1de1ae0a | Christoph Egger | return 0; |
176 | 1de1ae0a | Christoph Egger | } |
177 | 1de1ae0a | Christoph Egger | #else
|
178 | 1de1ae0a | Christoph Egger | static int raw_normalize_devicepath(const char **filename) |
179 | 1de1ae0a | Christoph Egger | { |
180 | 1de1ae0a | Christoph Egger | return 0; |
181 | 1de1ae0a | Christoph Egger | } |
182 | 1de1ae0a | Christoph Egger | #endif
|
183 | 1de1ae0a | Christoph Egger | |
184 | 90babde0 | Christoph Hellwig | static int raw_open_common(BlockDriverState *bs, const char *filename, |
185 | 19a3da7f | Blue Swirl | int bdrv_flags, int open_flags) |
186 | 83f64091 | bellard | { |
187 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
188 | 0e1d8f4c | Christoph Hellwig | int fd, ret;
|
189 | 83f64091 | bellard | |
190 | 1de1ae0a | Christoph Egger | ret = raw_normalize_devicepath(&filename); |
191 | 1de1ae0a | Christoph Egger | if (ret != 0) { |
192 | 1de1ae0a | Christoph Egger | return ret;
|
193 | 1de1ae0a | Christoph Egger | } |
194 | 1de1ae0a | Christoph Egger | |
195 | 19a3da7f | Blue Swirl | s->open_flags = open_flags | O_BINARY; |
196 | 11a1feb6 | Avi Kivity | s->open_flags &= ~O_ACCMODE; |
197 | f5edb014 | Naphtali Sprei | if (bdrv_flags & BDRV_O_RDWR) {
|
198 | 0e1d8f4c | Christoph Hellwig | s->open_flags |= O_RDWR; |
199 | 83f64091 | bellard | } else {
|
200 | 0e1d8f4c | Christoph Hellwig | s->open_flags |= O_RDONLY; |
201 | 83f64091 | bellard | } |
202 | 9f7965c7 | aliguori | |
203 | 9f7965c7 | aliguori | /* Use O_DSYNC for write-through caching, no flags for write-back caching,
|
204 | 9f7965c7 | aliguori | * and O_DIRECT for no caching. */
|
205 | 19a3da7f | Blue Swirl | if ((bdrv_flags & BDRV_O_NOCACHE))
|
206 | 0e1d8f4c | Christoph Hellwig | s->open_flags |= O_DIRECT; |
207 | a6599793 | Christoph Hellwig | if (!(bdrv_flags & BDRV_O_CACHE_WB))
|
208 | 0e1d8f4c | Christoph Hellwig | s->open_flags |= O_DSYNC; |
209 | 83f64091 | bellard | |
210 | 90babde0 | Christoph Hellwig | s->fd = -1;
|
211 | 40ff6d7e | Kevin Wolf | fd = qemu_open(filename, s->open_flags, 0644);
|
212 | 19cb3738 | bellard | if (fd < 0) { |
213 | 19cb3738 | bellard | ret = -errno; |
214 | 19cb3738 | bellard | if (ret == -EROFS)
|
215 | 19cb3738 | bellard | ret = -EACCES; |
216 | 19cb3738 | bellard | return ret;
|
217 | 19cb3738 | bellard | } |
218 | 83f64091 | bellard | s->fd = fd; |
219 | bed5cc52 | bellard | s->aligned_buf = NULL;
|
220 | 5c6c3a6c | Christoph Hellwig | |
221 | 19a3da7f | Blue Swirl | if ((bdrv_flags & BDRV_O_NOCACHE)) {
|
222 | 581b9e29 | Christoph Hellwig | /*
|
223 | 581b9e29 | Christoph Hellwig | * Allocate a buffer for read/modify/write cycles. Chose the size
|
224 | 581b9e29 | Christoph Hellwig | * pessimistically as we don't know the block size yet.
|
225 | 581b9e29 | Christoph Hellwig | */
|
226 | 581b9e29 | Christoph Hellwig | s->aligned_buf_size = 32 * MAX_BLOCKSIZE;
|
227 | 581b9e29 | Christoph Hellwig | s->aligned_buf = qemu_memalign(MAX_BLOCKSIZE, s->aligned_buf_size); |
228 | bed5cc52 | bellard | if (s->aligned_buf == NULL) { |
229 | 9ef91a67 | Christoph Hellwig | goto out_close;
|
230 | bed5cc52 | bellard | } |
231 | bed5cc52 | bellard | } |
232 | 9ef91a67 | Christoph Hellwig | |
233 | f6e8ffc2 | Frediano Ziglio | /* We're falling back to POSIX AIO in some cases so init always */
|
234 | f6e8ffc2 | Frediano Ziglio | if (paio_init() < 0) { |
235 | f6e8ffc2 | Frediano Ziglio | goto out_free_buf;
|
236 | f6e8ffc2 | Frediano Ziglio | } |
237 | f6e8ffc2 | Frediano Ziglio | |
238 | 5c6c3a6c | Christoph Hellwig | #ifdef CONFIG_LINUX_AIO
|
239 | c30e624d | Frediano Ziglio | /*
|
240 | c30e624d | Frediano Ziglio | * Currently Linux do AIO only for files opened with O_DIRECT
|
241 | c30e624d | Frediano Ziglio | * specified so check NOCACHE flag too
|
242 | c30e624d | Frediano Ziglio | */
|
243 | 5c6c3a6c | Christoph Hellwig | if ((bdrv_flags & (BDRV_O_NOCACHE|BDRV_O_NATIVE_AIO)) ==
|
244 | 5c6c3a6c | Christoph Hellwig | (BDRV_O_NOCACHE|BDRV_O_NATIVE_AIO)) { |
245 | d2e46345 | Kevin Wolf | |
246 | 5c6c3a6c | Christoph Hellwig | s->aio_ctx = laio_init(); |
247 | 5c6c3a6c | Christoph Hellwig | if (!s->aio_ctx) {
|
248 | 5c6c3a6c | Christoph Hellwig | goto out_free_buf;
|
249 | 5c6c3a6c | Christoph Hellwig | } |
250 | 5c6c3a6c | Christoph Hellwig | s->use_aio = 1;
|
251 | 5c6c3a6c | Christoph Hellwig | } else
|
252 | 5c6c3a6c | Christoph Hellwig | #endif
|
253 | 5c6c3a6c | Christoph Hellwig | { |
254 | e44bd6fc | Stefan Weil | #ifdef CONFIG_LINUX_AIO
|
255 | 5c6c3a6c | Christoph Hellwig | s->use_aio = 0;
|
256 | e44bd6fc | Stefan Weil | #endif
|
257 | 9ef91a67 | Christoph Hellwig | } |
258 | 9ef91a67 | Christoph Hellwig | |
259 | dce512de | Christoph Hellwig | #ifdef CONFIG_XFS
|
260 | dce512de | Christoph Hellwig | if (platform_test_xfs_fd(s->fd)) {
|
261 | dce512de | Christoph Hellwig | s->is_xfs = 1;
|
262 | dce512de | Christoph Hellwig | } |
263 | dce512de | Christoph Hellwig | #endif
|
264 | dce512de | Christoph Hellwig | |
265 | 83f64091 | bellard | return 0; |
266 | 9ef91a67 | Christoph Hellwig | |
267 | 9ef91a67 | Christoph Hellwig | out_free_buf:
|
268 | 9ef91a67 | Christoph Hellwig | qemu_vfree(s->aligned_buf); |
269 | 9ef91a67 | Christoph Hellwig | out_close:
|
270 | 9ef91a67 | Christoph Hellwig | close(fd); |
271 | 9ef91a67 | Christoph Hellwig | return -errno;
|
272 | 83f64091 | bellard | } |
273 | 83f64091 | bellard | |
274 | 90babde0 | Christoph Hellwig | static int raw_open(BlockDriverState *bs, const char *filename, int flags) |
275 | 90babde0 | Christoph Hellwig | { |
276 | 90babde0 | Christoph Hellwig | BDRVRawState *s = bs->opaque; |
277 | 90babde0 | Christoph Hellwig | |
278 | 90babde0 | Christoph Hellwig | s->type = FTYPE_FILE; |
279 | 9a2d77ad | Christoph Hellwig | return raw_open_common(bs, filename, flags, 0); |
280 | 90babde0 | Christoph Hellwig | } |
281 | 90babde0 | Christoph Hellwig | |
282 | 83f64091 | bellard | /* XXX: use host sector size if necessary with:
|
283 | 83f64091 | bellard | #ifdef DIOCGSECTORSIZE
|
284 | 83f64091 | bellard | {
|
285 | 83f64091 | bellard | unsigned int sectorsize = 512;
|
286 | 83f64091 | bellard | if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) &&
|
287 | 83f64091 | bellard | sectorsize > bufsize)
|
288 | 83f64091 | bellard | bufsize = sectorsize;
|
289 | 83f64091 | bellard | }
|
290 | 83f64091 | bellard | #endif
|
291 | 83f64091 | bellard | #ifdef CONFIG_COCOA
|
292 | 2ee9fb48 | Stefan Weil | uint32_t blockSize = 512;
|
293 | 83f64091 | bellard | if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) {
|
294 | 83f64091 | bellard | bufsize = blockSize;
|
295 | 83f64091 | bellard | }
|
296 | 83f64091 | bellard | #endif
|
297 | 83f64091 | bellard | */
|
298 | 83f64091 | bellard | |
299 | bed5cc52 | bellard | /*
|
300 | bed5cc52 | bellard | * offset and count are in bytes, but must be multiples of 512 for files
|
301 | bed5cc52 | bellard | * opened with O_DIRECT. buf must be aligned to 512 bytes then.
|
302 | bed5cc52 | bellard | *
|
303 | bed5cc52 | bellard | * This function may be called without alignment if the caller ensures
|
304 | bed5cc52 | bellard | * that O_DIRECT is not in effect.
|
305 | bed5cc52 | bellard | */
|
306 | bed5cc52 | bellard | static int raw_pread_aligned(BlockDriverState *bs, int64_t offset, |
307 | 83f64091 | bellard | uint8_t *buf, int count)
|
308 | 83f64091 | bellard | { |
309 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
310 | 83f64091 | bellard | int ret;
|
311 | 3b46e624 | ths | |
312 | 19cb3738 | bellard | ret = fd_open(bs); |
313 | 19cb3738 | bellard | if (ret < 0) |
314 | 19cb3738 | bellard | return ret;
|
315 | 19cb3738 | bellard | |
316 | 4899d10d | Stefan Hajnoczi | ret = pread(s->fd, buf, count, offset); |
317 | 8c05dbf9 | ths | if (ret == count)
|
318 | 65d21bc7 | Markus Armbruster | return ret;
|
319 | 8c05dbf9 | ths | |
320 | 22afa7b5 | Kevin Wolf | /* Allow reads beyond the end (needed for pwrite) */
|
321 | 22afa7b5 | Kevin Wolf | if ((ret == 0) && bs->growable) { |
322 | 22afa7b5 | Kevin Wolf | int64_t size = raw_getlength(bs); |
323 | 22afa7b5 | Kevin Wolf | if (offset >= size) {
|
324 | 22afa7b5 | Kevin Wolf | memset(buf, 0, count);
|
325 | 65d21bc7 | Markus Armbruster | return count;
|
326 | 22afa7b5 | Kevin Wolf | } |
327 | 22afa7b5 | Kevin Wolf | } |
328 | 22afa7b5 | Kevin Wolf | |
329 | 92868412 | j_mayer | DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
330 | 92868412 | j_mayer | "] read failed %d : %d = %s\n",
|
331 | 8c05dbf9 | ths | s->fd, bs->filename, offset, buf, count, |
332 | 8c05dbf9 | ths | bs->total_sectors, ret, errno, strerror(errno)); |
333 | 8c05dbf9 | ths | |
334 | 8c05dbf9 | ths | /* Try harder for CDrom. */
|
335 | 65d21bc7 | Markus Armbruster | if (s->type != FTYPE_FILE) {
|
336 | 4899d10d | Stefan Hajnoczi | ret = pread(s->fd, buf, count, offset); |
337 | 8c05dbf9 | ths | if (ret == count)
|
338 | 65d21bc7 | Markus Armbruster | return ret;
|
339 | 4899d10d | Stefan Hajnoczi | ret = pread(s->fd, buf, count, offset); |
340 | 8c05dbf9 | ths | if (ret == count)
|
341 | 65d21bc7 | Markus Armbruster | return ret;
|
342 | 8c05dbf9 | ths | |
343 | 92868412 | j_mayer | DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
344 | 92868412 | j_mayer | "] retry read failed %d : %d = %s\n",
|
345 | 8c05dbf9 | ths | s->fd, bs->filename, offset, buf, count, |
346 | 8c05dbf9 | ths | bs->total_sectors, ret, errno, strerror(errno)); |
347 | 8c05dbf9 | ths | } |
348 | 8c05dbf9 | ths | |
349 | 94c6d6d8 | Christoph Hellwig | return (ret < 0) ? -errno : ret; |
350 | 83f64091 | bellard | } |
351 | 83f64091 | bellard | |
352 | bed5cc52 | bellard | /*
|
353 | 581b9e29 | Christoph Hellwig | * offset and count are in bytes, but must be multiples of the sector size
|
354 | 581b9e29 | Christoph Hellwig | * for files opened with O_DIRECT. buf must be aligned to sector size bytes
|
355 | 581b9e29 | Christoph Hellwig | * then.
|
356 | bed5cc52 | bellard | *
|
357 | bed5cc52 | bellard | * This function may be called without alignment if the caller ensures
|
358 | bed5cc52 | bellard | * that O_DIRECT is not in effect.
|
359 | bed5cc52 | bellard | */
|
360 | bed5cc52 | bellard | static int raw_pwrite_aligned(BlockDriverState *bs, int64_t offset, |
361 | 83f64091 | bellard | const uint8_t *buf, int count) |
362 | 83f64091 | bellard | { |
363 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
364 | 83f64091 | bellard | int ret;
|
365 | 3b46e624 | ths | |
366 | 19cb3738 | bellard | ret = fd_open(bs); |
367 | 19cb3738 | bellard | if (ret < 0) |
368 | 4141d4c2 | aliguori | return -errno;
|
369 | 19cb3738 | bellard | |
370 | 4899d10d | Stefan Hajnoczi | ret = pwrite(s->fd, buf, count, offset); |
371 | 8c05dbf9 | ths | if (ret == count)
|
372 | 65d21bc7 | Markus Armbruster | return ret;
|
373 | 8c05dbf9 | ths | |
374 | 92868412 | j_mayer | DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
375 | 92868412 | j_mayer | "] write failed %d : %d = %s\n",
|
376 | 8c05dbf9 | ths | s->fd, bs->filename, offset, buf, count, |
377 | 8c05dbf9 | ths | bs->total_sectors, ret, errno, strerror(errno)); |
378 | 8c05dbf9 | ths | |
379 | 4141d4c2 | aliguori | return (ret < 0) ? -errno : ret; |
380 | 83f64091 | bellard | } |
381 | 83f64091 | bellard | |
382 | bed5cc52 | bellard | |
383 | bed5cc52 | bellard | /*
|
384 | bed5cc52 | bellard | * offset and count are in bytes and possibly not aligned. For files opened
|
385 | bed5cc52 | bellard | * with O_DIRECT, necessary alignments are ensured before calling
|
386 | bed5cc52 | bellard | * raw_pread_aligned to do the actual read.
|
387 | bed5cc52 | bellard | */
|
388 | bed5cc52 | bellard | static int raw_pread(BlockDriverState *bs, int64_t offset, |
389 | bed5cc52 | bellard | uint8_t *buf, int count)
|
390 | bed5cc52 | bellard | { |
391 | bed5cc52 | bellard | BDRVRawState *s = bs->opaque; |
392 | 581b9e29 | Christoph Hellwig | unsigned sector_mask = bs->buffer_alignment - 1; |
393 | bed5cc52 | bellard | int size, ret, shift, sum;
|
394 | bed5cc52 | bellard | |
395 | bed5cc52 | bellard | sum = 0;
|
396 | bed5cc52 | bellard | |
397 | bed5cc52 | bellard | if (s->aligned_buf != NULL) { |
398 | bed5cc52 | bellard | |
399 | 581b9e29 | Christoph Hellwig | if (offset & sector_mask) {
|
400 | 581b9e29 | Christoph Hellwig | /* align offset on a sector size bytes boundary */
|
401 | bed5cc52 | bellard | |
402 | 581b9e29 | Christoph Hellwig | shift = offset & sector_mask; |
403 | 581b9e29 | Christoph Hellwig | size = (shift + count + sector_mask) & ~sector_mask; |
404 | 581b9e29 | Christoph Hellwig | if (size > s->aligned_buf_size)
|
405 | 581b9e29 | Christoph Hellwig | size = s->aligned_buf_size; |
406 | bed5cc52 | bellard | ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, size); |
407 | bed5cc52 | bellard | if (ret < 0) |
408 | bed5cc52 | bellard | return ret;
|
409 | bed5cc52 | bellard | |
410 | 581b9e29 | Christoph Hellwig | size = bs->buffer_alignment - shift; |
411 | bed5cc52 | bellard | if (size > count)
|
412 | bed5cc52 | bellard | size = count; |
413 | bed5cc52 | bellard | memcpy(buf, s->aligned_buf + shift, size); |
414 | bed5cc52 | bellard | |
415 | bed5cc52 | bellard | buf += size; |
416 | bed5cc52 | bellard | offset += size; |
417 | bed5cc52 | bellard | count -= size; |
418 | bed5cc52 | bellard | sum += size; |
419 | bed5cc52 | bellard | |
420 | bed5cc52 | bellard | if (count == 0) |
421 | bed5cc52 | bellard | return sum;
|
422 | bed5cc52 | bellard | } |
423 | 581b9e29 | Christoph Hellwig | if (count & sector_mask || (uintptr_t) buf & sector_mask) {
|
424 | bed5cc52 | bellard | |
425 | bed5cc52 | bellard | /* read on aligned buffer */
|
426 | bed5cc52 | bellard | |
427 | bed5cc52 | bellard | while (count) {
|
428 | bed5cc52 | bellard | |
429 | 581b9e29 | Christoph Hellwig | size = (count + sector_mask) & ~sector_mask; |
430 | 581b9e29 | Christoph Hellwig | if (size > s->aligned_buf_size)
|
431 | 581b9e29 | Christoph Hellwig | size = s->aligned_buf_size; |
432 | bed5cc52 | bellard | |
433 | bed5cc52 | bellard | ret = raw_pread_aligned(bs, offset, s->aligned_buf, size); |
434 | 053965c7 | Kevin Wolf | if (ret < 0) { |
435 | bed5cc52 | bellard | return ret;
|
436 | 053965c7 | Kevin Wolf | } else if (ret == 0) { |
437 | 053965c7 | Kevin Wolf | fprintf(stderr, "raw_pread: read beyond end of file\n");
|
438 | 053965c7 | Kevin Wolf | abort(); |
439 | 053965c7 | Kevin Wolf | } |
440 | bed5cc52 | bellard | |
441 | bed5cc52 | bellard | size = ret; |
442 | bed5cc52 | bellard | if (size > count)
|
443 | bed5cc52 | bellard | size = count; |
444 | bed5cc52 | bellard | |
445 | bed5cc52 | bellard | memcpy(buf, s->aligned_buf, size); |
446 | bed5cc52 | bellard | |
447 | bed5cc52 | bellard | buf += size; |
448 | bed5cc52 | bellard | offset += size; |
449 | bed5cc52 | bellard | count -= size; |
450 | bed5cc52 | bellard | sum += size; |
451 | bed5cc52 | bellard | } |
452 | bed5cc52 | bellard | |
453 | bed5cc52 | bellard | return sum;
|
454 | bed5cc52 | bellard | } |
455 | bed5cc52 | bellard | } |
456 | bed5cc52 | bellard | |
457 | bed5cc52 | bellard | return raw_pread_aligned(bs, offset, buf, count) + sum;
|
458 | bed5cc52 | bellard | } |
459 | bed5cc52 | bellard | |
460 | eda578e5 | aliguori | static int raw_read(BlockDriverState *bs, int64_t sector_num, |
461 | eda578e5 | aliguori | uint8_t *buf, int nb_sectors)
|
462 | eda578e5 | aliguori | { |
463 | 537a1d4b | aliguori | int ret;
|
464 | 537a1d4b | aliguori | |
465 | 9040385d | Jes Sorensen | ret = raw_pread(bs, sector_num * BDRV_SECTOR_SIZE, buf, |
466 | 9040385d | Jes Sorensen | nb_sectors * BDRV_SECTOR_SIZE); |
467 | 9040385d | Jes Sorensen | if (ret == (nb_sectors * BDRV_SECTOR_SIZE))
|
468 | 537a1d4b | aliguori | ret = 0;
|
469 | 537a1d4b | aliguori | return ret;
|
470 | eda578e5 | aliguori | } |
471 | eda578e5 | aliguori | |
472 | bed5cc52 | bellard | /*
|
473 | bed5cc52 | bellard | * offset and count are in bytes and possibly not aligned. For files opened
|
474 | bed5cc52 | bellard | * with O_DIRECT, necessary alignments are ensured before calling
|
475 | bed5cc52 | bellard | * raw_pwrite_aligned to do the actual write.
|
476 | bed5cc52 | bellard | */
|
477 | bed5cc52 | bellard | static int raw_pwrite(BlockDriverState *bs, int64_t offset, |
478 | bed5cc52 | bellard | const uint8_t *buf, int count) |
479 | bed5cc52 | bellard | { |
480 | bed5cc52 | bellard | BDRVRawState *s = bs->opaque; |
481 | 581b9e29 | Christoph Hellwig | unsigned sector_mask = bs->buffer_alignment - 1; |
482 | bed5cc52 | bellard | int size, ret, shift, sum;
|
483 | bed5cc52 | bellard | |
484 | bed5cc52 | bellard | sum = 0;
|
485 | bed5cc52 | bellard | |
486 | bed5cc52 | bellard | if (s->aligned_buf != NULL) { |
487 | bed5cc52 | bellard | |
488 | 581b9e29 | Christoph Hellwig | if (offset & sector_mask) {
|
489 | 581b9e29 | Christoph Hellwig | /* align offset on a sector size bytes boundary */
|
490 | 581b9e29 | Christoph Hellwig | shift = offset & sector_mask; |
491 | 581b9e29 | Christoph Hellwig | ret = raw_pread_aligned(bs, offset - shift, s->aligned_buf, |
492 | 581b9e29 | Christoph Hellwig | bs->buffer_alignment); |
493 | bed5cc52 | bellard | if (ret < 0) |
494 | bed5cc52 | bellard | return ret;
|
495 | bed5cc52 | bellard | |
496 | 581b9e29 | Christoph Hellwig | size = bs->buffer_alignment - shift; |
497 | bed5cc52 | bellard | if (size > count)
|
498 | bed5cc52 | bellard | size = count; |
499 | bed5cc52 | bellard | memcpy(s->aligned_buf + shift, buf, size); |
500 | bed5cc52 | bellard | |
501 | 581b9e29 | Christoph Hellwig | ret = raw_pwrite_aligned(bs, offset - shift, s->aligned_buf, |
502 | 581b9e29 | Christoph Hellwig | bs->buffer_alignment); |
503 | bed5cc52 | bellard | if (ret < 0) |
504 | bed5cc52 | bellard | return ret;
|
505 | bed5cc52 | bellard | |
506 | bed5cc52 | bellard | buf += size; |
507 | bed5cc52 | bellard | offset += size; |
508 | bed5cc52 | bellard | count -= size; |
509 | bed5cc52 | bellard | sum += size; |
510 | bed5cc52 | bellard | |
511 | bed5cc52 | bellard | if (count == 0) |
512 | bed5cc52 | bellard | return sum;
|
513 | bed5cc52 | bellard | } |
514 | 581b9e29 | Christoph Hellwig | if (count & sector_mask || (uintptr_t) buf & sector_mask) {
|
515 | bed5cc52 | bellard | |
516 | 581b9e29 | Christoph Hellwig | while ((size = (count & ~sector_mask)) != 0) { |
517 | bed5cc52 | bellard | |
518 | 581b9e29 | Christoph Hellwig | if (size > s->aligned_buf_size)
|
519 | 581b9e29 | Christoph Hellwig | size = s->aligned_buf_size; |
520 | bed5cc52 | bellard | |
521 | bed5cc52 | bellard | memcpy(s->aligned_buf, buf, size); |
522 | bed5cc52 | bellard | |
523 | bed5cc52 | bellard | ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, size); |
524 | bed5cc52 | bellard | if (ret < 0) |
525 | bed5cc52 | bellard | return ret;
|
526 | bed5cc52 | bellard | |
527 | bed5cc52 | bellard | buf += ret; |
528 | bed5cc52 | bellard | offset += ret; |
529 | bed5cc52 | bellard | count -= ret; |
530 | bed5cc52 | bellard | sum += ret; |
531 | bed5cc52 | bellard | } |
532 | 11a3cb81 | Christoph Hellwig | /* here, count < sector_size because (count & ~sector_mask) == 0 */
|
533 | bed5cc52 | bellard | if (count) {
|
534 | 581b9e29 | Christoph Hellwig | ret = raw_pread_aligned(bs, offset, s->aligned_buf, |
535 | 581b9e29 | Christoph Hellwig | bs->buffer_alignment); |
536 | bed5cc52 | bellard | if (ret < 0) |
537 | bed5cc52 | bellard | return ret;
|
538 | bed5cc52 | bellard | memcpy(s->aligned_buf, buf, count); |
539 | bed5cc52 | bellard | |
540 | 581b9e29 | Christoph Hellwig | ret = raw_pwrite_aligned(bs, offset, s->aligned_buf, |
541 | 581b9e29 | Christoph Hellwig | bs->buffer_alignment); |
542 | bed5cc52 | bellard | if (ret < 0) |
543 | bed5cc52 | bellard | return ret;
|
544 | bed5cc52 | bellard | if (count < ret)
|
545 | bed5cc52 | bellard | ret = count; |
546 | bed5cc52 | bellard | |
547 | bed5cc52 | bellard | sum += ret; |
548 | bed5cc52 | bellard | } |
549 | bed5cc52 | bellard | return sum;
|
550 | bed5cc52 | bellard | } |
551 | bed5cc52 | bellard | } |
552 | bed5cc52 | bellard | return raw_pwrite_aligned(bs, offset, buf, count) + sum;
|
553 | bed5cc52 | bellard | } |
554 | bed5cc52 | bellard | |
555 | eda578e5 | aliguori | static int raw_write(BlockDriverState *bs, int64_t sector_num, |
556 | eda578e5 | aliguori | const uint8_t *buf, int nb_sectors) |
557 | eda578e5 | aliguori | { |
558 | 537a1d4b | aliguori | int ret;
|
559 | 9040385d | Jes Sorensen | ret = raw_pwrite(bs, sector_num * BDRV_SECTOR_SIZE, buf, |
560 | 9040385d | Jes Sorensen | nb_sectors * BDRV_SECTOR_SIZE); |
561 | 9040385d | Jes Sorensen | if (ret == (nb_sectors * BDRV_SECTOR_SIZE))
|
562 | 537a1d4b | aliguori | ret = 0;
|
563 | 537a1d4b | aliguori | return ret;
|
564 | eda578e5 | aliguori | } |
565 | eda578e5 | aliguori | |
566 | 9ef91a67 | Christoph Hellwig | /*
|
567 | 9ef91a67 | Christoph Hellwig | * Check if all memory in this vector is sector aligned.
|
568 | 9ef91a67 | Christoph Hellwig | */
|
569 | 581b9e29 | Christoph Hellwig | static int qiov_is_aligned(BlockDriverState *bs, QEMUIOVector *qiov) |
570 | a76bab49 | aliguori | { |
571 | 9ef91a67 | Christoph Hellwig | int i;
|
572 | 83f64091 | bellard | |
573 | 9ef91a67 | Christoph Hellwig | for (i = 0; i < qiov->niov; i++) { |
574 | 581b9e29 | Christoph Hellwig | if ((uintptr_t) qiov->iov[i].iov_base % bs->buffer_alignment) {
|
575 | 9ef91a67 | Christoph Hellwig | return 0; |
576 | c16b5a2c | Christoph Hellwig | } |
577 | c16b5a2c | Christoph Hellwig | } |
578 | c16b5a2c | Christoph Hellwig | |
579 | 9ef91a67 | Christoph Hellwig | return 1; |
580 | c16b5a2c | Christoph Hellwig | } |
581 | c16b5a2c | Christoph Hellwig | |
582 | 9ef91a67 | Christoph Hellwig | static BlockDriverAIOCB *raw_aio_submit(BlockDriverState *bs,
|
583 | 9ef91a67 | Christoph Hellwig | int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
|
584 | 9ef91a67 | Christoph Hellwig | BlockDriverCompletionFunc *cb, void *opaque, int type) |
585 | 83f64091 | bellard | { |
586 | ce1a14dc | pbrook | BDRVRawState *s = bs->opaque; |
587 | ce1a14dc | pbrook | |
588 | 19cb3738 | bellard | if (fd_open(bs) < 0) |
589 | 19cb3738 | bellard | return NULL; |
590 | 19cb3738 | bellard | |
591 | f141eafe | aliguori | /*
|
592 | f141eafe | aliguori | * If O_DIRECT is used the buffer needs to be aligned on a sector
|
593 | c1ee7d56 | Frediano Ziglio | * boundary. Check if this is the case or tell the low-level
|
594 | 9ef91a67 | Christoph Hellwig | * driver that it needs to copy the buffer.
|
595 | f141eafe | aliguori | */
|
596 | 5c6c3a6c | Christoph Hellwig | if (s->aligned_buf) {
|
597 | 581b9e29 | Christoph Hellwig | if (!qiov_is_aligned(bs, qiov)) {
|
598 | 5c6c3a6c | Christoph Hellwig | type |= QEMU_AIO_MISALIGNED; |
599 | e44bd6fc | Stefan Weil | #ifdef CONFIG_LINUX_AIO
|
600 | 5c6c3a6c | Christoph Hellwig | } else if (s->use_aio) { |
601 | 5c6c3a6c | Christoph Hellwig | return laio_submit(bs, s->aio_ctx, s->fd, sector_num, qiov,
|
602 | e44bd6fc | Stefan Weil | nb_sectors, cb, opaque, type); |
603 | e44bd6fc | Stefan Weil | #endif
|
604 | 5c6c3a6c | Christoph Hellwig | } |
605 | 9ef91a67 | Christoph Hellwig | } |
606 | f141eafe | aliguori | |
607 | 1e5b9d2f | Kevin Wolf | return paio_submit(bs, s->fd, sector_num, qiov, nb_sectors,
|
608 | 9ef91a67 | Christoph Hellwig | cb, opaque, type); |
609 | 83f64091 | bellard | } |
610 | 83f64091 | bellard | |
611 | f141eafe | aliguori | static BlockDriverAIOCB *raw_aio_readv(BlockDriverState *bs,
|
612 | f141eafe | aliguori | int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
|
613 | ce1a14dc | pbrook | BlockDriverCompletionFunc *cb, void *opaque)
|
614 | 83f64091 | bellard | { |
615 | 9ef91a67 | Christoph Hellwig | return raw_aio_submit(bs, sector_num, qiov, nb_sectors,
|
616 | 9ef91a67 | Christoph Hellwig | cb, opaque, QEMU_AIO_READ); |
617 | 83f64091 | bellard | } |
618 | 83f64091 | bellard | |
619 | f141eafe | aliguori | static BlockDriverAIOCB *raw_aio_writev(BlockDriverState *bs,
|
620 | f141eafe | aliguori | int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
|
621 | ce1a14dc | pbrook | BlockDriverCompletionFunc *cb, void *opaque)
|
622 | 83f64091 | bellard | { |
623 | 9ef91a67 | Christoph Hellwig | return raw_aio_submit(bs, sector_num, qiov, nb_sectors,
|
624 | 9ef91a67 | Christoph Hellwig | cb, opaque, QEMU_AIO_WRITE); |
625 | 83f64091 | bellard | } |
626 | 53538725 | aliguori | |
627 | b2e12bc6 | Christoph Hellwig | static BlockDriverAIOCB *raw_aio_flush(BlockDriverState *bs,
|
628 | b2e12bc6 | Christoph Hellwig | BlockDriverCompletionFunc *cb, void *opaque)
|
629 | b2e12bc6 | Christoph Hellwig | { |
630 | b2e12bc6 | Christoph Hellwig | BDRVRawState *s = bs->opaque; |
631 | b2e12bc6 | Christoph Hellwig | |
632 | b2e12bc6 | Christoph Hellwig | if (fd_open(bs) < 0) |
633 | b2e12bc6 | Christoph Hellwig | return NULL; |
634 | b2e12bc6 | Christoph Hellwig | |
635 | 1e5b9d2f | Kevin Wolf | return paio_submit(bs, s->fd, 0, NULL, 0, cb, opaque, QEMU_AIO_FLUSH); |
636 | b2e12bc6 | Christoph Hellwig | } |
637 | b2e12bc6 | Christoph Hellwig | |
638 | 83f64091 | bellard | static void raw_close(BlockDriverState *bs) |
639 | 83f64091 | bellard | { |
640 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
641 | 19cb3738 | bellard | if (s->fd >= 0) { |
642 | 19cb3738 | bellard | close(s->fd); |
643 | 19cb3738 | bellard | s->fd = -1;
|
644 | bed5cc52 | bellard | if (s->aligned_buf != NULL) |
645 | f8a83245 | Herve Poussineau | qemu_vfree(s->aligned_buf); |
646 | 19cb3738 | bellard | } |
647 | 83f64091 | bellard | } |
648 | 83f64091 | bellard | |
649 | 83f64091 | bellard | static int raw_truncate(BlockDriverState *bs, int64_t offset) |
650 | 83f64091 | bellard | { |
651 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
652 | 19cb3738 | bellard | if (s->type != FTYPE_FILE)
|
653 | 19cb3738 | bellard | return -ENOTSUP;
|
654 | 83f64091 | bellard | if (ftruncate(s->fd, offset) < 0) |
655 | 83f64091 | bellard | return -errno;
|
656 | 83f64091 | bellard | return 0; |
657 | 83f64091 | bellard | } |
658 | 83f64091 | bellard | |
659 | 128ab2ff | blueswir1 | #ifdef __OpenBSD__
|
660 | 128ab2ff | blueswir1 | static int64_t raw_getlength(BlockDriverState *bs)
|
661 | 128ab2ff | blueswir1 | { |
662 | 128ab2ff | blueswir1 | BDRVRawState *s = bs->opaque; |
663 | 128ab2ff | blueswir1 | int fd = s->fd;
|
664 | 128ab2ff | blueswir1 | struct stat st;
|
665 | 128ab2ff | blueswir1 | |
666 | 128ab2ff | blueswir1 | if (fstat(fd, &st))
|
667 | 128ab2ff | blueswir1 | return -1; |
668 | 128ab2ff | blueswir1 | if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) {
|
669 | 128ab2ff | blueswir1 | struct disklabel dl;
|
670 | 128ab2ff | blueswir1 | |
671 | 128ab2ff | blueswir1 | if (ioctl(fd, DIOCGDINFO, &dl))
|
672 | 128ab2ff | blueswir1 | return -1; |
673 | 128ab2ff | blueswir1 | return (uint64_t)dl.d_secsize *
|
674 | 128ab2ff | blueswir1 | dl.d_partitions[DISKPART(st.st_rdev)].p_size; |
675 | 128ab2ff | blueswir1 | } else
|
676 | 128ab2ff | blueswir1 | return st.st_size;
|
677 | 128ab2ff | blueswir1 | } |
678 | d1f6fd8d | Christoph Egger | #elif defined(__NetBSD__)
|
679 | d1f6fd8d | Christoph Egger | static int64_t raw_getlength(BlockDriverState *bs)
|
680 | d1f6fd8d | Christoph Egger | { |
681 | d1f6fd8d | Christoph Egger | BDRVRawState *s = bs->opaque; |
682 | d1f6fd8d | Christoph Egger | int fd = s->fd;
|
683 | d1f6fd8d | Christoph Egger | struct stat st;
|
684 | d1f6fd8d | Christoph Egger | |
685 | d1f6fd8d | Christoph Egger | if (fstat(fd, &st))
|
686 | d1f6fd8d | Christoph Egger | return -1; |
687 | d1f6fd8d | Christoph Egger | if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) {
|
688 | d1f6fd8d | Christoph Egger | struct dkwedge_info dkw;
|
689 | d1f6fd8d | Christoph Egger | |
690 | d1f6fd8d | Christoph Egger | if (ioctl(fd, DIOCGWEDGEINFO, &dkw) != -1) { |
691 | d1f6fd8d | Christoph Egger | return dkw.dkw_size * 512; |
692 | d1f6fd8d | Christoph Egger | } else {
|
693 | d1f6fd8d | Christoph Egger | struct disklabel dl;
|
694 | d1f6fd8d | Christoph Egger | |
695 | d1f6fd8d | Christoph Egger | if (ioctl(fd, DIOCGDINFO, &dl))
|
696 | d1f6fd8d | Christoph Egger | return -1; |
697 | d1f6fd8d | Christoph Egger | return (uint64_t)dl.d_secsize *
|
698 | d1f6fd8d | Christoph Egger | dl.d_partitions[DISKPART(st.st_rdev)].p_size; |
699 | d1f6fd8d | Christoph Egger | } |
700 | d1f6fd8d | Christoph Egger | } else
|
701 | d1f6fd8d | Christoph Egger | return st.st_size;
|
702 | d1f6fd8d | Christoph Egger | } |
703 | 50779cc2 | Christoph Hellwig | #elif defined(__sun__)
|
704 | 50779cc2 | Christoph Hellwig | static int64_t raw_getlength(BlockDriverState *bs)
|
705 | 50779cc2 | Christoph Hellwig | { |
706 | 50779cc2 | Christoph Hellwig | BDRVRawState *s = bs->opaque; |
707 | 50779cc2 | Christoph Hellwig | struct dk_minfo minfo;
|
708 | 50779cc2 | Christoph Hellwig | int ret;
|
709 | 50779cc2 | Christoph Hellwig | |
710 | 50779cc2 | Christoph Hellwig | ret = fd_open(bs); |
711 | 50779cc2 | Christoph Hellwig | if (ret < 0) { |
712 | 50779cc2 | Christoph Hellwig | return ret;
|
713 | 50779cc2 | Christoph Hellwig | } |
714 | 50779cc2 | Christoph Hellwig | |
715 | 50779cc2 | Christoph Hellwig | /*
|
716 | 50779cc2 | Christoph Hellwig | * Use the DKIOCGMEDIAINFO ioctl to read the size.
|
717 | 50779cc2 | Christoph Hellwig | */
|
718 | 50779cc2 | Christoph Hellwig | ret = ioctl(s->fd, DKIOCGMEDIAINFO, &minfo); |
719 | 50779cc2 | Christoph Hellwig | if (ret != -1) { |
720 | 50779cc2 | Christoph Hellwig | return minfo.dki_lbsize * minfo.dki_capacity;
|
721 | 50779cc2 | Christoph Hellwig | } |
722 | 50779cc2 | Christoph Hellwig | |
723 | 50779cc2 | Christoph Hellwig | /*
|
724 | 50779cc2 | Christoph Hellwig | * There are reports that lseek on some devices fails, but
|
725 | 50779cc2 | Christoph Hellwig | * irc discussion said that contingency on contingency was overkill.
|
726 | 50779cc2 | Christoph Hellwig | */
|
727 | 50779cc2 | Christoph Hellwig | return lseek(s->fd, 0, SEEK_END); |
728 | 50779cc2 | Christoph Hellwig | } |
729 | 50779cc2 | Christoph Hellwig | #elif defined(CONFIG_BSD)
|
730 | 50779cc2 | Christoph Hellwig | static int64_t raw_getlength(BlockDriverState *bs)
|
731 | 83f64091 | bellard | { |
732 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
733 | 83f64091 | bellard | int fd = s->fd;
|
734 | 83f64091 | bellard | int64_t size; |
735 | 83f64091 | bellard | struct stat sb;
|
736 | a167ba50 | Aurelien Jarno | #if defined (__FreeBSD__) || defined(__FreeBSD_kernel__)
|
737 | 9f23011a | blueswir1 | int reopened = 0; |
738 | 9f23011a | blueswir1 | #endif
|
739 | 19cb3738 | bellard | int ret;
|
740 | 19cb3738 | bellard | |
741 | 19cb3738 | bellard | ret = fd_open(bs); |
742 | 19cb3738 | bellard | if (ret < 0) |
743 | 19cb3738 | bellard | return ret;
|
744 | 83f64091 | bellard | |
745 | a167ba50 | Aurelien Jarno | #if defined (__FreeBSD__) || defined(__FreeBSD_kernel__)
|
746 | 9f23011a | blueswir1 | again:
|
747 | 9f23011a | blueswir1 | #endif
|
748 | 83f64091 | bellard | if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
|
749 | 83f64091 | bellard | #ifdef DIOCGMEDIASIZE
|
750 | 83f64091 | bellard | if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
|
751 | c5e97233 | blueswir1 | #elif defined(DIOCGPART)
|
752 | c5e97233 | blueswir1 | { |
753 | c5e97233 | blueswir1 | struct partinfo pi;
|
754 | c5e97233 | blueswir1 | if (ioctl(fd, DIOCGPART, &pi) == 0) |
755 | c5e97233 | blueswir1 | size = pi.media_size; |
756 | c5e97233 | blueswir1 | else
|
757 | c5e97233 | blueswir1 | size = 0;
|
758 | c5e97233 | blueswir1 | } |
759 | c5e97233 | blueswir1 | if (size == 0) |
760 | 83f64091 | bellard | #endif
|
761 | 83f64091 | bellard | #ifdef CONFIG_COCOA
|
762 | 83f64091 | bellard | size = LONG_LONG_MAX; |
763 | 83f64091 | bellard | #else
|
764 | 83f64091 | bellard | size = lseek(fd, 0LL, SEEK_END);
|
765 | 83f64091 | bellard | #endif
|
766 | a167ba50 | Aurelien Jarno | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
|
767 | 9f23011a | blueswir1 | switch(s->type) {
|
768 | 9f23011a | blueswir1 | case FTYPE_CD:
|
769 | 9f23011a | blueswir1 | /* XXX FreeBSD acd returns UINT_MAX sectors for an empty drive */
|
770 | 9f23011a | blueswir1 | if (size == 2048LL * (unsigned)-1) |
771 | 9f23011a | blueswir1 | size = 0;
|
772 | 9f23011a | blueswir1 | /* XXX no disc? maybe we need to reopen... */
|
773 | f3a5d3f8 | Christoph Hellwig | if (size <= 0 && !reopened && cdrom_reopen(bs) >= 0) { |
774 | 9f23011a | blueswir1 | reopened = 1;
|
775 | 9f23011a | blueswir1 | goto again;
|
776 | 9f23011a | blueswir1 | } |
777 | 9f23011a | blueswir1 | } |
778 | 9f23011a | blueswir1 | #endif
|
779 | 50779cc2 | Christoph Hellwig | } else {
|
780 | 83f64091 | bellard | size = lseek(fd, 0, SEEK_END);
|
781 | 83f64091 | bellard | } |
782 | 83f64091 | bellard | return size;
|
783 | 83f64091 | bellard | } |
784 | 50779cc2 | Christoph Hellwig | #else
|
785 | 50779cc2 | Christoph Hellwig | static int64_t raw_getlength(BlockDriverState *bs)
|
786 | 50779cc2 | Christoph Hellwig | { |
787 | 50779cc2 | Christoph Hellwig | BDRVRawState *s = bs->opaque; |
788 | 50779cc2 | Christoph Hellwig | int ret;
|
789 | 50779cc2 | Christoph Hellwig | |
790 | 50779cc2 | Christoph Hellwig | ret = fd_open(bs); |
791 | 50779cc2 | Christoph Hellwig | if (ret < 0) { |
792 | 50779cc2 | Christoph Hellwig | return ret;
|
793 | 50779cc2 | Christoph Hellwig | } |
794 | 50779cc2 | Christoph Hellwig | |
795 | 50779cc2 | Christoph Hellwig | return lseek(s->fd, 0, SEEK_END); |
796 | 50779cc2 | Christoph Hellwig | } |
797 | 128ab2ff | blueswir1 | #endif
|
798 | 83f64091 | bellard | |
799 | 4a1d5e1f | Fam Zheng | static int64_t raw_get_allocated_file_size(BlockDriverState *bs)
|
800 | 4a1d5e1f | Fam Zheng | { |
801 | 4a1d5e1f | Fam Zheng | struct stat st;
|
802 | 4a1d5e1f | Fam Zheng | BDRVRawState *s = bs->opaque; |
803 | 4a1d5e1f | Fam Zheng | |
804 | 4a1d5e1f | Fam Zheng | if (fstat(s->fd, &st) < 0) { |
805 | 4a1d5e1f | Fam Zheng | return -errno;
|
806 | 4a1d5e1f | Fam Zheng | } |
807 | 4a1d5e1f | Fam Zheng | return (int64_t)st.st_blocks * 512; |
808 | 4a1d5e1f | Fam Zheng | } |
809 | 4a1d5e1f | Fam Zheng | |
810 | 0e7e1989 | Kevin Wolf | static int raw_create(const char *filename, QEMUOptionParameter *options) |
811 | 83f64091 | bellard | { |
812 | 83f64091 | bellard | int fd;
|
813 | 1e37d059 | Stefan Weil | int result = 0; |
814 | 0e7e1989 | Kevin Wolf | int64_t total_size = 0;
|
815 | 83f64091 | bellard | |
816 | 0e7e1989 | Kevin Wolf | /* Read out options */
|
817 | 0e7e1989 | Kevin Wolf | while (options && options->name) {
|
818 | 0e7e1989 | Kevin Wolf | if (!strcmp(options->name, BLOCK_OPT_SIZE)) {
|
819 | 9040385d | Jes Sorensen | total_size = options->value.n / BDRV_SECTOR_SIZE; |
820 | 0e7e1989 | Kevin Wolf | } |
821 | 0e7e1989 | Kevin Wolf | options++; |
822 | 0e7e1989 | Kevin Wolf | } |
823 | 83f64091 | bellard | |
824 | 5fafdf24 | ths | fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
825 | 83f64091 | bellard | 0644);
|
826 | 1e37d059 | Stefan Weil | if (fd < 0) { |
827 | 1e37d059 | Stefan Weil | result = -errno; |
828 | 1e37d059 | Stefan Weil | } else {
|
829 | 9040385d | Jes Sorensen | if (ftruncate(fd, total_size * BDRV_SECTOR_SIZE) != 0) { |
830 | 1e37d059 | Stefan Weil | result = -errno; |
831 | 1e37d059 | Stefan Weil | } |
832 | 1e37d059 | Stefan Weil | if (close(fd) != 0) { |
833 | 1e37d059 | Stefan Weil | result = -errno; |
834 | 1e37d059 | Stefan Weil | } |
835 | 1e37d059 | Stefan Weil | } |
836 | 1e37d059 | Stefan Weil | return result;
|
837 | 83f64091 | bellard | } |
838 | 83f64091 | bellard | |
839 | 205ef796 | Kevin Wolf | static int raw_flush(BlockDriverState *bs) |
840 | 83f64091 | bellard | { |
841 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
842 | 074abad3 | Kevin Wolf | int ret;
|
843 | 074abad3 | Kevin Wolf | |
844 | 074abad3 | Kevin Wolf | ret = qemu_fdatasync(s->fd); |
845 | 074abad3 | Kevin Wolf | if (ret < 0) { |
846 | 074abad3 | Kevin Wolf | return -errno;
|
847 | 074abad3 | Kevin Wolf | } |
848 | 074abad3 | Kevin Wolf | |
849 | 074abad3 | Kevin Wolf | return 0; |
850 | 83f64091 | bellard | } |
851 | 83f64091 | bellard | |
852 | dce512de | Christoph Hellwig | #ifdef CONFIG_XFS
|
853 | dce512de | Christoph Hellwig | static int xfs_discard(BDRVRawState *s, int64_t sector_num, int nb_sectors) |
854 | dce512de | Christoph Hellwig | { |
855 | dce512de | Christoph Hellwig | struct xfs_flock64 fl;
|
856 | dce512de | Christoph Hellwig | |
857 | dce512de | Christoph Hellwig | memset(&fl, 0, sizeof(fl)); |
858 | dce512de | Christoph Hellwig | fl.l_whence = SEEK_SET; |
859 | dce512de | Christoph Hellwig | fl.l_start = sector_num << 9;
|
860 | dce512de | Christoph Hellwig | fl.l_len = (int64_t)nb_sectors << 9;
|
861 | dce512de | Christoph Hellwig | |
862 | dce512de | Christoph Hellwig | if (xfsctl(NULL, s->fd, XFS_IOC_UNRESVSP64, &fl) < 0) { |
863 | dce512de | Christoph Hellwig | DEBUG_BLOCK_PRINT("cannot punch hole (%s)\n", strerror(errno));
|
864 | dce512de | Christoph Hellwig | return -errno;
|
865 | dce512de | Christoph Hellwig | } |
866 | dce512de | Christoph Hellwig | |
867 | dce512de | Christoph Hellwig | return 0; |
868 | dce512de | Christoph Hellwig | } |
869 | dce512de | Christoph Hellwig | #endif
|
870 | dce512de | Christoph Hellwig | |
871 | dce512de | Christoph Hellwig | static int raw_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors) |
872 | dce512de | Christoph Hellwig | { |
873 | dce512de | Christoph Hellwig | #ifdef CONFIG_XFS
|
874 | dce512de | Christoph Hellwig | BDRVRawState *s = bs->opaque; |
875 | dce512de | Christoph Hellwig | |
876 | dce512de | Christoph Hellwig | if (s->is_xfs) {
|
877 | dce512de | Christoph Hellwig | return xfs_discard(s, sector_num, nb_sectors);
|
878 | dce512de | Christoph Hellwig | } |
879 | dce512de | Christoph Hellwig | #endif
|
880 | dce512de | Christoph Hellwig | |
881 | dce512de | Christoph Hellwig | return 0; |
882 | dce512de | Christoph Hellwig | } |
883 | 0e7e1989 | Kevin Wolf | |
884 | 0e7e1989 | Kevin Wolf | static QEMUOptionParameter raw_create_options[] = {
|
885 | db08adf5 | Kevin Wolf | { |
886 | db08adf5 | Kevin Wolf | .name = BLOCK_OPT_SIZE, |
887 | db08adf5 | Kevin Wolf | .type = OPT_SIZE, |
888 | db08adf5 | Kevin Wolf | .help = "Virtual disk size"
|
889 | db08adf5 | Kevin Wolf | }, |
890 | 0e7e1989 | Kevin Wolf | { NULL }
|
891 | 0e7e1989 | Kevin Wolf | }; |
892 | 0e7e1989 | Kevin Wolf | |
893 | 84a12e66 | Christoph Hellwig | static BlockDriver bdrv_file = {
|
894 | 84a12e66 | Christoph Hellwig | .format_name = "file",
|
895 | 84a12e66 | Christoph Hellwig | .protocol_name = "file",
|
896 | 856ae5c3 | blueswir1 | .instance_size = sizeof(BDRVRawState),
|
897 | 856ae5c3 | blueswir1 | .bdrv_probe = NULL, /* no probe for protocols */ |
898 | 66f82cee | Kevin Wolf | .bdrv_file_open = raw_open, |
899 | 856ae5c3 | blueswir1 | .bdrv_read = raw_read, |
900 | 856ae5c3 | blueswir1 | .bdrv_write = raw_write, |
901 | 856ae5c3 | blueswir1 | .bdrv_close = raw_close, |
902 | 856ae5c3 | blueswir1 | .bdrv_create = raw_create, |
903 | 856ae5c3 | blueswir1 | .bdrv_flush = raw_flush, |
904 | dce512de | Christoph Hellwig | .bdrv_discard = raw_discard, |
905 | 3b46e624 | ths | |
906 | f141eafe | aliguori | .bdrv_aio_readv = raw_aio_readv, |
907 | f141eafe | aliguori | .bdrv_aio_writev = raw_aio_writev, |
908 | b2e12bc6 | Christoph Hellwig | .bdrv_aio_flush = raw_aio_flush, |
909 | 3c529d93 | aliguori | |
910 | 83f64091 | bellard | .bdrv_truncate = raw_truncate, |
911 | 83f64091 | bellard | .bdrv_getlength = raw_getlength, |
912 | 4a1d5e1f | Fam Zheng | .bdrv_get_allocated_file_size |
913 | 4a1d5e1f | Fam Zheng | = raw_get_allocated_file_size, |
914 | 0e7e1989 | Kevin Wolf | |
915 | 0e7e1989 | Kevin Wolf | .create_options = raw_create_options, |
916 | 83f64091 | bellard | }; |
917 | 83f64091 | bellard | |
918 | 19cb3738 | bellard | /***********************************************/
|
919 | 19cb3738 | bellard | /* host device */
|
920 | 19cb3738 | bellard | |
921 | 19cb3738 | bellard | #ifdef CONFIG_COCOA
|
922 | 19cb3738 | bellard | static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator );
|
923 | 19cb3738 | bellard | static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ); |
924 | 19cb3738 | bellard | |
925 | 19cb3738 | bellard | kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ) |
926 | 19cb3738 | bellard | { |
927 | 5fafdf24 | ths | kern_return_t kernResult; |
928 | 19cb3738 | bellard | mach_port_t masterPort; |
929 | 19cb3738 | bellard | CFMutableDictionaryRef classesToMatch; |
930 | 19cb3738 | bellard | |
931 | 19cb3738 | bellard | kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort ); |
932 | 19cb3738 | bellard | if ( KERN_SUCCESS != kernResult ) {
|
933 | 19cb3738 | bellard | printf( "IOMasterPort returned %d\n", kernResult );
|
934 | 19cb3738 | bellard | } |
935 | 3b46e624 | ths | |
936 | 5fafdf24 | ths | classesToMatch = IOServiceMatching( kIOCDMediaClass ); |
937 | 19cb3738 | bellard | if ( classesToMatch == NULL ) { |
938 | 19cb3738 | bellard | printf( "IOServiceMatching returned a NULL dictionary.\n" );
|
939 | 19cb3738 | bellard | } else {
|
940 | 19cb3738 | bellard | CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue ); |
941 | 19cb3738 | bellard | } |
942 | 19cb3738 | bellard | kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator ); |
943 | 19cb3738 | bellard | if ( KERN_SUCCESS != kernResult )
|
944 | 19cb3738 | bellard | { |
945 | 19cb3738 | bellard | printf( "IOServiceGetMatchingServices returned %d\n", kernResult );
|
946 | 19cb3738 | bellard | } |
947 | 3b46e624 | ths | |
948 | 19cb3738 | bellard | return kernResult;
|
949 | 19cb3738 | bellard | } |
950 | 19cb3738 | bellard | |
951 | 19cb3738 | bellard | kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize )
|
952 | 19cb3738 | bellard | { |
953 | 19cb3738 | bellard | io_object_t nextMedia; |
954 | 19cb3738 | bellard | kern_return_t kernResult = KERN_FAILURE; |
955 | 19cb3738 | bellard | *bsdPath = '\0';
|
956 | 19cb3738 | bellard | nextMedia = IOIteratorNext( mediaIterator ); |
957 | 19cb3738 | bellard | if ( nextMedia )
|
958 | 19cb3738 | bellard | { |
959 | 19cb3738 | bellard | CFTypeRef bsdPathAsCFString; |
960 | 19cb3738 | bellard | bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 );
|
961 | 19cb3738 | bellard | if ( bsdPathAsCFString ) {
|
962 | 19cb3738 | bellard | size_t devPathLength; |
963 | 19cb3738 | bellard | strcpy( bsdPath, _PATH_DEV ); |
964 | 19cb3738 | bellard | strcat( bsdPath, "r" );
|
965 | 19cb3738 | bellard | devPathLength = strlen( bsdPath ); |
966 | 19cb3738 | bellard | if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) {
|
967 | 19cb3738 | bellard | kernResult = KERN_SUCCESS; |
968 | 19cb3738 | bellard | } |
969 | 19cb3738 | bellard | CFRelease( bsdPathAsCFString ); |
970 | 19cb3738 | bellard | } |
971 | 19cb3738 | bellard | IOObjectRelease( nextMedia ); |
972 | 19cb3738 | bellard | } |
973 | 3b46e624 | ths | |
974 | 19cb3738 | bellard | return kernResult;
|
975 | 19cb3738 | bellard | } |
976 | 19cb3738 | bellard | |
977 | 19cb3738 | bellard | #endif
|
978 | 19cb3738 | bellard | |
979 | 508c7cb3 | Christoph Hellwig | static int hdev_probe_device(const char *filename) |
980 | 508c7cb3 | Christoph Hellwig | { |
981 | 508c7cb3 | Christoph Hellwig | struct stat st;
|
982 | 508c7cb3 | Christoph Hellwig | |
983 | 508c7cb3 | Christoph Hellwig | /* allow a dedicated CD-ROM driver to match with a higher priority */
|
984 | 508c7cb3 | Christoph Hellwig | if (strstart(filename, "/dev/cdrom", NULL)) |
985 | 508c7cb3 | Christoph Hellwig | return 50; |
986 | 508c7cb3 | Christoph Hellwig | |
987 | 508c7cb3 | Christoph Hellwig | if (stat(filename, &st) >= 0 && |
988 | 508c7cb3 | Christoph Hellwig | (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode))) { |
989 | 508c7cb3 | Christoph Hellwig | return 100; |
990 | 508c7cb3 | Christoph Hellwig | } |
991 | 508c7cb3 | Christoph Hellwig | |
992 | 508c7cb3 | Christoph Hellwig | return 0; |
993 | 508c7cb3 | Christoph Hellwig | } |
994 | 508c7cb3 | Christoph Hellwig | |
995 | 19cb3738 | bellard | static int hdev_open(BlockDriverState *bs, const char *filename, int flags) |
996 | 19cb3738 | bellard | { |
997 | 19cb3738 | bellard | BDRVRawState *s = bs->opaque; |
998 | a76bab49 | aliguori | |
999 | 19cb3738 | bellard | #ifdef CONFIG_COCOA
|
1000 | 19cb3738 | bellard | if (strstart(filename, "/dev/cdrom", NULL)) { |
1001 | 19cb3738 | bellard | kern_return_t kernResult; |
1002 | 19cb3738 | bellard | io_iterator_t mediaIterator; |
1003 | 19cb3738 | bellard | char bsdPath[ MAXPATHLEN ];
|
1004 | 19cb3738 | bellard | int fd;
|
1005 | 5fafdf24 | ths | |
1006 | 19cb3738 | bellard | kernResult = FindEjectableCDMedia( &mediaIterator ); |
1007 | 19cb3738 | bellard | kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) );
|
1008 | 3b46e624 | ths | |
1009 | 19cb3738 | bellard | if ( bsdPath[ 0 ] != '\0' ) { |
1010 | 19cb3738 | bellard | strcat(bsdPath,"s0");
|
1011 | 19cb3738 | bellard | /* some CDs don't have a partition 0 */
|
1012 | 19cb3738 | bellard | fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE); |
1013 | 19cb3738 | bellard | if (fd < 0) { |
1014 | 19cb3738 | bellard | bsdPath[strlen(bsdPath)-1] = '1'; |
1015 | 19cb3738 | bellard | } else {
|
1016 | 19cb3738 | bellard | close(fd); |
1017 | 19cb3738 | bellard | } |
1018 | 19cb3738 | bellard | filename = bsdPath; |
1019 | 19cb3738 | bellard | } |
1020 | 3b46e624 | ths | |
1021 | 19cb3738 | bellard | if ( mediaIterator )
|
1022 | 19cb3738 | bellard | IOObjectRelease( mediaIterator ); |
1023 | 19cb3738 | bellard | } |
1024 | 19cb3738 | bellard | #endif
|
1025 | 19cb3738 | bellard | |
1026 | 19cb3738 | bellard | s->type = FTYPE_FILE; |
1027 | 4dd75c70 | Christoph Hellwig | #if defined(__linux__)
|
1028 | 05acda4d | Bernhard Kohl | { |
1029 | 05acda4d | Bernhard Kohl | char resolved_path[ MAXPATHLEN ], *temp;
|
1030 | 05acda4d | Bernhard Kohl | |
1031 | 05acda4d | Bernhard Kohl | temp = realpath(filename, resolved_path); |
1032 | 05acda4d | Bernhard Kohl | if (temp && strstart(temp, "/dev/sg", NULL)) { |
1033 | 05acda4d | Bernhard Kohl | bs->sg = 1;
|
1034 | 05acda4d | Bernhard Kohl | } |
1035 | 19cb3738 | bellard | } |
1036 | 19cb3738 | bellard | #endif
|
1037 | 90babde0 | Christoph Hellwig | |
1038 | 19a3da7f | Blue Swirl | return raw_open_common(bs, filename, flags, 0); |
1039 | 19cb3738 | bellard | } |
1040 | 19cb3738 | bellard | |
1041 | 03ff3ca3 | aliguori | #if defined(__linux__)
|
1042 | 19cb3738 | bellard | /* Note: we do not have a reliable method to detect if the floppy is
|
1043 | 19cb3738 | bellard | present. The current method is to try to open the floppy at every
|
1044 | 19cb3738 | bellard | I/O and to keep it opened during a few hundreds of ms. */
|
1045 | 19cb3738 | bellard | static int fd_open(BlockDriverState *bs) |
1046 | 19cb3738 | bellard | { |
1047 | 19cb3738 | bellard | BDRVRawState *s = bs->opaque; |
1048 | 19cb3738 | bellard | int last_media_present;
|
1049 | 19cb3738 | bellard | |
1050 | 19cb3738 | bellard | if (s->type != FTYPE_FD)
|
1051 | 19cb3738 | bellard | return 0; |
1052 | 19cb3738 | bellard | last_media_present = (s->fd >= 0);
|
1053 | 5fafdf24 | ths | if (s->fd >= 0 && |
1054 | c57c846a | Blue Swirl | (get_clock() - s->fd_open_time) >= FD_OPEN_TIMEOUT) { |
1055 | 19cb3738 | bellard | close(s->fd); |
1056 | 19cb3738 | bellard | s->fd = -1;
|
1057 | 19cb3738 | bellard | #ifdef DEBUG_FLOPPY
|
1058 | 19cb3738 | bellard | printf("Floppy closed\n");
|
1059 | 19cb3738 | bellard | #endif
|
1060 | 19cb3738 | bellard | } |
1061 | 19cb3738 | bellard | if (s->fd < 0) { |
1062 | 5fafdf24 | ths | if (s->fd_got_error &&
|
1063 | c57c846a | Blue Swirl | (get_clock() - s->fd_error_time) < FD_OPEN_TIMEOUT) { |
1064 | 19cb3738 | bellard | #ifdef DEBUG_FLOPPY
|
1065 | 19cb3738 | bellard | printf("No floppy (open delayed)\n");
|
1066 | 19cb3738 | bellard | #endif
|
1067 | 19cb3738 | bellard | return -EIO;
|
1068 | 19cb3738 | bellard | } |
1069 | 0e1d8f4c | Christoph Hellwig | s->fd = open(bs->filename, s->open_flags & ~O_NONBLOCK); |
1070 | 19cb3738 | bellard | if (s->fd < 0) { |
1071 | c57c846a | Blue Swirl | s->fd_error_time = get_clock(); |
1072 | 19cb3738 | bellard | s->fd_got_error = 1;
|
1073 | 19cb3738 | bellard | if (last_media_present)
|
1074 | 19cb3738 | bellard | s->fd_media_changed = 1;
|
1075 | 19cb3738 | bellard | #ifdef DEBUG_FLOPPY
|
1076 | 19cb3738 | bellard | printf("No floppy\n");
|
1077 | 19cb3738 | bellard | #endif
|
1078 | 19cb3738 | bellard | return -EIO;
|
1079 | 19cb3738 | bellard | } |
1080 | 19cb3738 | bellard | #ifdef DEBUG_FLOPPY
|
1081 | 19cb3738 | bellard | printf("Floppy opened\n");
|
1082 | 19cb3738 | bellard | #endif
|
1083 | 19cb3738 | bellard | } |
1084 | 19cb3738 | bellard | if (!last_media_present)
|
1085 | 19cb3738 | bellard | s->fd_media_changed = 1;
|
1086 | c57c846a | Blue Swirl | s->fd_open_time = get_clock(); |
1087 | 19cb3738 | bellard | s->fd_got_error = 0;
|
1088 | 19cb3738 | bellard | return 0; |
1089 | 19cb3738 | bellard | } |
1090 | 19cb3738 | bellard | |
1091 | 63ec93db | Christoph Hellwig | static int hdev_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
1092 | 985a03b0 | ths | { |
1093 | 985a03b0 | ths | BDRVRawState *s = bs->opaque; |
1094 | 985a03b0 | ths | |
1095 | 985a03b0 | ths | return ioctl(s->fd, req, buf);
|
1096 | 985a03b0 | ths | } |
1097 | 221f715d | aliguori | |
1098 | 63ec93db | Christoph Hellwig | static BlockDriverAIOCB *hdev_aio_ioctl(BlockDriverState *bs,
|
1099 | 221f715d | aliguori | unsigned long int req, void *buf, |
1100 | 221f715d | aliguori | BlockDriverCompletionFunc *cb, void *opaque)
|
1101 | 221f715d | aliguori | { |
1102 | f141eafe | aliguori | BDRVRawState *s = bs->opaque; |
1103 | 221f715d | aliguori | |
1104 | f141eafe | aliguori | if (fd_open(bs) < 0) |
1105 | f141eafe | aliguori | return NULL; |
1106 | 9ef91a67 | Christoph Hellwig | return paio_ioctl(bs, s->fd, req, buf, cb, opaque);
|
1107 | 221f715d | aliguori | } |
1108 | 221f715d | aliguori | |
1109 | a167ba50 | Aurelien Jarno | #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
|
1110 | 9f23011a | blueswir1 | static int fd_open(BlockDriverState *bs) |
1111 | 9f23011a | blueswir1 | { |
1112 | 9f23011a | blueswir1 | BDRVRawState *s = bs->opaque; |
1113 | 9f23011a | blueswir1 | |
1114 | 9f23011a | blueswir1 | /* this is just to ensure s->fd is sane (its called by io ops) */
|
1115 | 9f23011a | blueswir1 | if (s->fd >= 0) |
1116 | 9f23011a | blueswir1 | return 0; |
1117 | 9f23011a | blueswir1 | return -EIO;
|
1118 | 9f23011a | blueswir1 | } |
1119 | 9f23011a | blueswir1 | #else /* !linux && !FreeBSD */ |
1120 | 19cb3738 | bellard | |
1121 | 08af02e2 | aliguori | static int fd_open(BlockDriverState *bs) |
1122 | 08af02e2 | aliguori | { |
1123 | 08af02e2 | aliguori | return 0; |
1124 | 08af02e2 | aliguori | } |
1125 | 08af02e2 | aliguori | |
1126 | 221f715d | aliguori | #endif /* !linux && !FreeBSD */ |
1127 | 04eeb8b6 | aliguori | |
1128 | 0e7e1989 | Kevin Wolf | static int hdev_create(const char *filename, QEMUOptionParameter *options) |
1129 | 93c65b47 | aliguori | { |
1130 | 93c65b47 | aliguori | int fd;
|
1131 | 93c65b47 | aliguori | int ret = 0; |
1132 | 93c65b47 | aliguori | struct stat stat_buf;
|
1133 | 0e7e1989 | Kevin Wolf | int64_t total_size = 0;
|
1134 | 93c65b47 | aliguori | |
1135 | 0e7e1989 | Kevin Wolf | /* Read out options */
|
1136 | 0e7e1989 | Kevin Wolf | while (options && options->name) {
|
1137 | 0e7e1989 | Kevin Wolf | if (!strcmp(options->name, "size")) { |
1138 | 9040385d | Jes Sorensen | total_size = options->value.n / BDRV_SECTOR_SIZE; |
1139 | 0e7e1989 | Kevin Wolf | } |
1140 | 0e7e1989 | Kevin Wolf | options++; |
1141 | 0e7e1989 | Kevin Wolf | } |
1142 | 93c65b47 | aliguori | |
1143 | 93c65b47 | aliguori | fd = open(filename, O_WRONLY | O_BINARY); |
1144 | 93c65b47 | aliguori | if (fd < 0) |
1145 | 57e69b7d | Kevin Wolf | return -errno;
|
1146 | 93c65b47 | aliguori | |
1147 | 93c65b47 | aliguori | if (fstat(fd, &stat_buf) < 0) |
1148 | 57e69b7d | Kevin Wolf | ret = -errno; |
1149 | 4099df58 | Christoph Hellwig | else if (!S_ISBLK(stat_buf.st_mode) && !S_ISCHR(stat_buf.st_mode)) |
1150 | 57e69b7d | Kevin Wolf | ret = -ENODEV; |
1151 | 9040385d | Jes Sorensen | else if (lseek(fd, 0, SEEK_END) < total_size * BDRV_SECTOR_SIZE) |
1152 | 93c65b47 | aliguori | ret = -ENOSPC; |
1153 | 93c65b47 | aliguori | |
1154 | 93c65b47 | aliguori | close(fd); |
1155 | 93c65b47 | aliguori | return ret;
|
1156 | 93c65b47 | aliguori | } |
1157 | 93c65b47 | aliguori | |
1158 | 336c1c12 | Kevin Wolf | static int hdev_has_zero_init(BlockDriverState *bs) |
1159 | 336c1c12 | Kevin Wolf | { |
1160 | 336c1c12 | Kevin Wolf | return 0; |
1161 | 336c1c12 | Kevin Wolf | } |
1162 | 336c1c12 | Kevin Wolf | |
1163 | 5efa9d5a | Anthony Liguori | static BlockDriver bdrv_host_device = {
|
1164 | 0b4ce02e | Kevin Wolf | .format_name = "host_device",
|
1165 | 84a12e66 | Christoph Hellwig | .protocol_name = "host_device",
|
1166 | 0b4ce02e | Kevin Wolf | .instance_size = sizeof(BDRVRawState),
|
1167 | 0b4ce02e | Kevin Wolf | .bdrv_probe_device = hdev_probe_device, |
1168 | 66f82cee | Kevin Wolf | .bdrv_file_open = hdev_open, |
1169 | 0b4ce02e | Kevin Wolf | .bdrv_close = raw_close, |
1170 | 93c65b47 | aliguori | .bdrv_create = hdev_create, |
1171 | 0b4ce02e | Kevin Wolf | .create_options = raw_create_options, |
1172 | 336c1c12 | Kevin Wolf | .bdrv_has_zero_init = hdev_has_zero_init, |
1173 | 0b4ce02e | Kevin Wolf | .bdrv_flush = raw_flush, |
1174 | 3b46e624 | ths | |
1175 | f141eafe | aliguori | .bdrv_aio_readv = raw_aio_readv, |
1176 | f141eafe | aliguori | .bdrv_aio_writev = raw_aio_writev, |
1177 | b2e12bc6 | Christoph Hellwig | .bdrv_aio_flush = raw_aio_flush, |
1178 | 3c529d93 | aliguori | |
1179 | eda578e5 | aliguori | .bdrv_read = raw_read, |
1180 | eda578e5 | aliguori | .bdrv_write = raw_write, |
1181 | e60f469c | aurel32 | .bdrv_getlength = raw_getlength, |
1182 | 4a1d5e1f | Fam Zheng | .bdrv_get_allocated_file_size |
1183 | 4a1d5e1f | Fam Zheng | = raw_get_allocated_file_size, |
1184 | 19cb3738 | bellard | |
1185 | f3a5d3f8 | Christoph Hellwig | /* generic scsi device */
|
1186 | 63ec93db | Christoph Hellwig | #ifdef __linux__
|
1187 | 63ec93db | Christoph Hellwig | .bdrv_ioctl = hdev_ioctl, |
1188 | 63ec93db | Christoph Hellwig | .bdrv_aio_ioctl = hdev_aio_ioctl, |
1189 | 63ec93db | Christoph Hellwig | #endif
|
1190 | f3a5d3f8 | Christoph Hellwig | }; |
1191 | f3a5d3f8 | Christoph Hellwig | |
1192 | f3a5d3f8 | Christoph Hellwig | #ifdef __linux__
|
1193 | f3a5d3f8 | Christoph Hellwig | static int floppy_open(BlockDriverState *bs, const char *filename, int flags) |
1194 | f3a5d3f8 | Christoph Hellwig | { |
1195 | f3a5d3f8 | Christoph Hellwig | BDRVRawState *s = bs->opaque; |
1196 | f3a5d3f8 | Christoph Hellwig | int ret;
|
1197 | f3a5d3f8 | Christoph Hellwig | |
1198 | f3a5d3f8 | Christoph Hellwig | s->type = FTYPE_FD; |
1199 | f3a5d3f8 | Christoph Hellwig | |
1200 | 19a3da7f | Blue Swirl | /* open will not fail even if no floppy is inserted, so add O_NONBLOCK */
|
1201 | 19a3da7f | Blue Swirl | ret = raw_open_common(bs, filename, flags, O_NONBLOCK); |
1202 | f3a5d3f8 | Christoph Hellwig | if (ret)
|
1203 | f3a5d3f8 | Christoph Hellwig | return ret;
|
1204 | f3a5d3f8 | Christoph Hellwig | |
1205 | f3a5d3f8 | Christoph Hellwig | /* close fd so that we can reopen it as needed */
|
1206 | f3a5d3f8 | Christoph Hellwig | close(s->fd); |
1207 | f3a5d3f8 | Christoph Hellwig | s->fd = -1;
|
1208 | f3a5d3f8 | Christoph Hellwig | s->fd_media_changed = 1;
|
1209 | f3a5d3f8 | Christoph Hellwig | |
1210 | f3a5d3f8 | Christoph Hellwig | return 0; |
1211 | f3a5d3f8 | Christoph Hellwig | } |
1212 | f3a5d3f8 | Christoph Hellwig | |
1213 | 508c7cb3 | Christoph Hellwig | static int floppy_probe_device(const char *filename) |
1214 | 508c7cb3 | Christoph Hellwig | { |
1215 | 2ebf7c4b | Cole Robinson | int fd, ret;
|
1216 | 2ebf7c4b | Cole Robinson | int prio = 0; |
1217 | 2ebf7c4b | Cole Robinson | struct floppy_struct fdparam;
|
1218 | 343f8568 | Johannes Stezenbach | struct stat st;
|
1219 | 2ebf7c4b | Cole Robinson | |
1220 | 508c7cb3 | Christoph Hellwig | if (strstart(filename, "/dev/fd", NULL)) |
1221 | 2ebf7c4b | Cole Robinson | prio = 50;
|
1222 | 2ebf7c4b | Cole Robinson | |
1223 | 2ebf7c4b | Cole Robinson | fd = open(filename, O_RDONLY | O_NONBLOCK); |
1224 | 2ebf7c4b | Cole Robinson | if (fd < 0) { |
1225 | 2ebf7c4b | Cole Robinson | goto out;
|
1226 | 2ebf7c4b | Cole Robinson | } |
1227 | 343f8568 | Johannes Stezenbach | ret = fstat(fd, &st); |
1228 | 343f8568 | Johannes Stezenbach | if (ret == -1 || !S_ISBLK(st.st_mode)) { |
1229 | 343f8568 | Johannes Stezenbach | goto outc;
|
1230 | 343f8568 | Johannes Stezenbach | } |
1231 | 2ebf7c4b | Cole Robinson | |
1232 | 2ebf7c4b | Cole Robinson | /* Attempt to detect via a floppy specific ioctl */
|
1233 | 2ebf7c4b | Cole Robinson | ret = ioctl(fd, FDGETPRM, &fdparam); |
1234 | 2ebf7c4b | Cole Robinson | if (ret >= 0) |
1235 | 2ebf7c4b | Cole Robinson | prio = 100;
|
1236 | 2ebf7c4b | Cole Robinson | |
1237 | 343f8568 | Johannes Stezenbach | outc:
|
1238 | 2ebf7c4b | Cole Robinson | close(fd); |
1239 | 2ebf7c4b | Cole Robinson | out:
|
1240 | 2ebf7c4b | Cole Robinson | return prio;
|
1241 | 508c7cb3 | Christoph Hellwig | } |
1242 | 508c7cb3 | Christoph Hellwig | |
1243 | 508c7cb3 | Christoph Hellwig | |
1244 | f3a5d3f8 | Christoph Hellwig | static int floppy_is_inserted(BlockDriverState *bs) |
1245 | f3a5d3f8 | Christoph Hellwig | { |
1246 | f3a5d3f8 | Christoph Hellwig | return fd_open(bs) >= 0; |
1247 | f3a5d3f8 | Christoph Hellwig | } |
1248 | f3a5d3f8 | Christoph Hellwig | |
1249 | f3a5d3f8 | Christoph Hellwig | static int floppy_media_changed(BlockDriverState *bs) |
1250 | f3a5d3f8 | Christoph Hellwig | { |
1251 | f3a5d3f8 | Christoph Hellwig | BDRVRawState *s = bs->opaque; |
1252 | f3a5d3f8 | Christoph Hellwig | int ret;
|
1253 | f3a5d3f8 | Christoph Hellwig | |
1254 | f3a5d3f8 | Christoph Hellwig | /*
|
1255 | f3a5d3f8 | Christoph Hellwig | * XXX: we do not have a true media changed indication.
|
1256 | f3a5d3f8 | Christoph Hellwig | * It does not work if the floppy is changed without trying to read it.
|
1257 | f3a5d3f8 | Christoph Hellwig | */
|
1258 | f3a5d3f8 | Christoph Hellwig | fd_open(bs); |
1259 | f3a5d3f8 | Christoph Hellwig | ret = s->fd_media_changed; |
1260 | f3a5d3f8 | Christoph Hellwig | s->fd_media_changed = 0;
|
1261 | f3a5d3f8 | Christoph Hellwig | #ifdef DEBUG_FLOPPY
|
1262 | f3a5d3f8 | Christoph Hellwig | printf("Floppy changed=%d\n", ret);
|
1263 | f3a5d3f8 | Christoph Hellwig | #endif
|
1264 | f3a5d3f8 | Christoph Hellwig | return ret;
|
1265 | f3a5d3f8 | Christoph Hellwig | } |
1266 | f3a5d3f8 | Christoph Hellwig | |
1267 | 822e1cd1 | Markus Armbruster | static void floppy_eject(BlockDriverState *bs, int eject_flag) |
1268 | f3a5d3f8 | Christoph Hellwig | { |
1269 | f3a5d3f8 | Christoph Hellwig | BDRVRawState *s = bs->opaque; |
1270 | f3a5d3f8 | Christoph Hellwig | int fd;
|
1271 | f3a5d3f8 | Christoph Hellwig | |
1272 | f3a5d3f8 | Christoph Hellwig | if (s->fd >= 0) { |
1273 | f3a5d3f8 | Christoph Hellwig | close(s->fd); |
1274 | f3a5d3f8 | Christoph Hellwig | s->fd = -1;
|
1275 | f3a5d3f8 | Christoph Hellwig | } |
1276 | f3a5d3f8 | Christoph Hellwig | fd = open(bs->filename, s->open_flags | O_NONBLOCK); |
1277 | f3a5d3f8 | Christoph Hellwig | if (fd >= 0) { |
1278 | f3a5d3f8 | Christoph Hellwig | if (ioctl(fd, FDEJECT, 0) < 0) |
1279 | f3a5d3f8 | Christoph Hellwig | perror("FDEJECT");
|
1280 | f3a5d3f8 | Christoph Hellwig | close(fd); |
1281 | f3a5d3f8 | Christoph Hellwig | } |
1282 | f3a5d3f8 | Christoph Hellwig | } |
1283 | f3a5d3f8 | Christoph Hellwig | |
1284 | f3a5d3f8 | Christoph Hellwig | static BlockDriver bdrv_host_floppy = {
|
1285 | f3a5d3f8 | Christoph Hellwig | .format_name = "host_floppy",
|
1286 | 84a12e66 | Christoph Hellwig | .protocol_name = "host_floppy",
|
1287 | f3a5d3f8 | Christoph Hellwig | .instance_size = sizeof(BDRVRawState),
|
1288 | 508c7cb3 | Christoph Hellwig | .bdrv_probe_device = floppy_probe_device, |
1289 | 66f82cee | Kevin Wolf | .bdrv_file_open = floppy_open, |
1290 | f3a5d3f8 | Christoph Hellwig | .bdrv_close = raw_close, |
1291 | f3a5d3f8 | Christoph Hellwig | .bdrv_create = hdev_create, |
1292 | 0b4ce02e | Kevin Wolf | .create_options = raw_create_options, |
1293 | 336c1c12 | Kevin Wolf | .bdrv_has_zero_init = hdev_has_zero_init, |
1294 | f3a5d3f8 | Christoph Hellwig | .bdrv_flush = raw_flush, |
1295 | f3a5d3f8 | Christoph Hellwig | |
1296 | f3a5d3f8 | Christoph Hellwig | .bdrv_aio_readv = raw_aio_readv, |
1297 | f3a5d3f8 | Christoph Hellwig | .bdrv_aio_writev = raw_aio_writev, |
1298 | b2e12bc6 | Christoph Hellwig | .bdrv_aio_flush = raw_aio_flush, |
1299 | f3a5d3f8 | Christoph Hellwig | |
1300 | f3a5d3f8 | Christoph Hellwig | .bdrv_read = raw_read, |
1301 | f3a5d3f8 | Christoph Hellwig | .bdrv_write = raw_write, |
1302 | f3a5d3f8 | Christoph Hellwig | .bdrv_getlength = raw_getlength, |
1303 | 4a1d5e1f | Fam Zheng | .bdrv_get_allocated_file_size |
1304 | 4a1d5e1f | Fam Zheng | = raw_get_allocated_file_size, |
1305 | f3a5d3f8 | Christoph Hellwig | |
1306 | f3a5d3f8 | Christoph Hellwig | /* removable device support */
|
1307 | f3a5d3f8 | Christoph Hellwig | .bdrv_is_inserted = floppy_is_inserted, |
1308 | f3a5d3f8 | Christoph Hellwig | .bdrv_media_changed = floppy_media_changed, |
1309 | f3a5d3f8 | Christoph Hellwig | .bdrv_eject = floppy_eject, |
1310 | f3a5d3f8 | Christoph Hellwig | }; |
1311 | f3a5d3f8 | Christoph Hellwig | |
1312 | f3a5d3f8 | Christoph Hellwig | static int cdrom_open(BlockDriverState *bs, const char *filename, int flags) |
1313 | f3a5d3f8 | Christoph Hellwig | { |
1314 | f3a5d3f8 | Christoph Hellwig | BDRVRawState *s = bs->opaque; |
1315 | f3a5d3f8 | Christoph Hellwig | |
1316 | f3a5d3f8 | Christoph Hellwig | s->type = FTYPE_CD; |
1317 | f3a5d3f8 | Christoph Hellwig | |
1318 | 19a3da7f | Blue Swirl | /* open will not fail even if no CD is inserted, so add O_NONBLOCK */
|
1319 | 19a3da7f | Blue Swirl | return raw_open_common(bs, filename, flags, O_NONBLOCK);
|
1320 | f3a5d3f8 | Christoph Hellwig | } |
1321 | f3a5d3f8 | Christoph Hellwig | |
1322 | 508c7cb3 | Christoph Hellwig | static int cdrom_probe_device(const char *filename) |
1323 | 508c7cb3 | Christoph Hellwig | { |
1324 | 3baf720e | Cole Robinson | int fd, ret;
|
1325 | 3baf720e | Cole Robinson | int prio = 0; |
1326 | 343f8568 | Johannes Stezenbach | struct stat st;
|
1327 | 3baf720e | Cole Robinson | |
1328 | 3baf720e | Cole Robinson | fd = open(filename, O_RDONLY | O_NONBLOCK); |
1329 | 3baf720e | Cole Robinson | if (fd < 0) { |
1330 | 3baf720e | Cole Robinson | goto out;
|
1331 | 3baf720e | Cole Robinson | } |
1332 | 343f8568 | Johannes Stezenbach | ret = fstat(fd, &st); |
1333 | 343f8568 | Johannes Stezenbach | if (ret == -1 || !S_ISBLK(st.st_mode)) { |
1334 | 343f8568 | Johannes Stezenbach | goto outc;
|
1335 | 343f8568 | Johannes Stezenbach | } |
1336 | 3baf720e | Cole Robinson | |
1337 | 3baf720e | Cole Robinson | /* Attempt to detect via a CDROM specific ioctl */
|
1338 | 3baf720e | Cole Robinson | ret = ioctl(fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); |
1339 | 3baf720e | Cole Robinson | if (ret >= 0) |
1340 | 3baf720e | Cole Robinson | prio = 100;
|
1341 | 3baf720e | Cole Robinson | |
1342 | 343f8568 | Johannes Stezenbach | outc:
|
1343 | 3baf720e | Cole Robinson | close(fd); |
1344 | 3baf720e | Cole Robinson | out:
|
1345 | 3baf720e | Cole Robinson | return prio;
|
1346 | 508c7cb3 | Christoph Hellwig | } |
1347 | 508c7cb3 | Christoph Hellwig | |
1348 | f3a5d3f8 | Christoph Hellwig | static int cdrom_is_inserted(BlockDriverState *bs) |
1349 | f3a5d3f8 | Christoph Hellwig | { |
1350 | f3a5d3f8 | Christoph Hellwig | BDRVRawState *s = bs->opaque; |
1351 | f3a5d3f8 | Christoph Hellwig | int ret;
|
1352 | f3a5d3f8 | Christoph Hellwig | |
1353 | f3a5d3f8 | Christoph Hellwig | ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); |
1354 | f3a5d3f8 | Christoph Hellwig | if (ret == CDS_DISC_OK)
|
1355 | f3a5d3f8 | Christoph Hellwig | return 1; |
1356 | f3a5d3f8 | Christoph Hellwig | return 0; |
1357 | f3a5d3f8 | Christoph Hellwig | } |
1358 | f3a5d3f8 | Christoph Hellwig | |
1359 | 822e1cd1 | Markus Armbruster | static void cdrom_eject(BlockDriverState *bs, int eject_flag) |
1360 | f3a5d3f8 | Christoph Hellwig | { |
1361 | f3a5d3f8 | Christoph Hellwig | BDRVRawState *s = bs->opaque; |
1362 | f3a5d3f8 | Christoph Hellwig | |
1363 | f3a5d3f8 | Christoph Hellwig | if (eject_flag) {
|
1364 | f3a5d3f8 | Christoph Hellwig | if (ioctl(s->fd, CDROMEJECT, NULL) < 0) |
1365 | f3a5d3f8 | Christoph Hellwig | perror("CDROMEJECT");
|
1366 | f3a5d3f8 | Christoph Hellwig | } else {
|
1367 | f3a5d3f8 | Christoph Hellwig | if (ioctl(s->fd, CDROMCLOSETRAY, NULL) < 0) |
1368 | f3a5d3f8 | Christoph Hellwig | perror("CDROMEJECT");
|
1369 | f3a5d3f8 | Christoph Hellwig | } |
1370 | f3a5d3f8 | Christoph Hellwig | } |
1371 | f3a5d3f8 | Christoph Hellwig | |
1372 | 025e849a | Markus Armbruster | static void cdrom_lock_medium(BlockDriverState *bs, bool locked) |
1373 | f3a5d3f8 | Christoph Hellwig | { |
1374 | f3a5d3f8 | Christoph Hellwig | BDRVRawState *s = bs->opaque; |
1375 | f3a5d3f8 | Christoph Hellwig | |
1376 | f3a5d3f8 | Christoph Hellwig | if (ioctl(s->fd, CDROM_LOCKDOOR, locked) < 0) { |
1377 | f3a5d3f8 | Christoph Hellwig | /*
|
1378 | f3a5d3f8 | Christoph Hellwig | * Note: an error can happen if the distribution automatically
|
1379 | f3a5d3f8 | Christoph Hellwig | * mounts the CD-ROM
|
1380 | f3a5d3f8 | Christoph Hellwig | */
|
1381 | f3a5d3f8 | Christoph Hellwig | /* perror("CDROM_LOCKDOOR"); */
|
1382 | f3a5d3f8 | Christoph Hellwig | } |
1383 | f3a5d3f8 | Christoph Hellwig | } |
1384 | f3a5d3f8 | Christoph Hellwig | |
1385 | f3a5d3f8 | Christoph Hellwig | static BlockDriver bdrv_host_cdrom = {
|
1386 | f3a5d3f8 | Christoph Hellwig | .format_name = "host_cdrom",
|
1387 | 84a12e66 | Christoph Hellwig | .protocol_name = "host_cdrom",
|
1388 | f3a5d3f8 | Christoph Hellwig | .instance_size = sizeof(BDRVRawState),
|
1389 | 508c7cb3 | Christoph Hellwig | .bdrv_probe_device = cdrom_probe_device, |
1390 | 66f82cee | Kevin Wolf | .bdrv_file_open = cdrom_open, |
1391 | f3a5d3f8 | Christoph Hellwig | .bdrv_close = raw_close, |
1392 | f3a5d3f8 | Christoph Hellwig | .bdrv_create = hdev_create, |
1393 | 0b4ce02e | Kevin Wolf | .create_options = raw_create_options, |
1394 | 336c1c12 | Kevin Wolf | .bdrv_has_zero_init = hdev_has_zero_init, |
1395 | f3a5d3f8 | Christoph Hellwig | .bdrv_flush = raw_flush, |
1396 | f3a5d3f8 | Christoph Hellwig | |
1397 | f3a5d3f8 | Christoph Hellwig | .bdrv_aio_readv = raw_aio_readv, |
1398 | f3a5d3f8 | Christoph Hellwig | .bdrv_aio_writev = raw_aio_writev, |
1399 | b2e12bc6 | Christoph Hellwig | .bdrv_aio_flush = raw_aio_flush, |
1400 | f3a5d3f8 | Christoph Hellwig | |
1401 | f3a5d3f8 | Christoph Hellwig | .bdrv_read = raw_read, |
1402 | f3a5d3f8 | Christoph Hellwig | .bdrv_write = raw_write, |
1403 | f3a5d3f8 | Christoph Hellwig | .bdrv_getlength = raw_getlength, |
1404 | 4a1d5e1f | Fam Zheng | .bdrv_get_allocated_file_size |
1405 | 4a1d5e1f | Fam Zheng | = raw_get_allocated_file_size, |
1406 | f3a5d3f8 | Christoph Hellwig | |
1407 | f3a5d3f8 | Christoph Hellwig | /* removable device support */
|
1408 | f3a5d3f8 | Christoph Hellwig | .bdrv_is_inserted = cdrom_is_inserted, |
1409 | f3a5d3f8 | Christoph Hellwig | .bdrv_eject = cdrom_eject, |
1410 | 025e849a | Markus Armbruster | .bdrv_lock_medium = cdrom_lock_medium, |
1411 | f3a5d3f8 | Christoph Hellwig | |
1412 | f3a5d3f8 | Christoph Hellwig | /* generic scsi device */
|
1413 | 63ec93db | Christoph Hellwig | .bdrv_ioctl = hdev_ioctl, |
1414 | 63ec93db | Christoph Hellwig | .bdrv_aio_ioctl = hdev_aio_ioctl, |
1415 | f3a5d3f8 | Christoph Hellwig | }; |
1416 | f3a5d3f8 | Christoph Hellwig | #endif /* __linux__ */ |
1417 | f3a5d3f8 | Christoph Hellwig | |
1418 | a167ba50 | Aurelien Jarno | #if defined (__FreeBSD__) || defined(__FreeBSD_kernel__)
|
1419 | f3a5d3f8 | Christoph Hellwig | static int cdrom_open(BlockDriverState *bs, const char *filename, int flags) |
1420 | f3a5d3f8 | Christoph Hellwig | { |
1421 | f3a5d3f8 | Christoph Hellwig | BDRVRawState *s = bs->opaque; |
1422 | f3a5d3f8 | Christoph Hellwig | int ret;
|
1423 | f3a5d3f8 | Christoph Hellwig | |
1424 | f3a5d3f8 | Christoph Hellwig | s->type = FTYPE_CD; |
1425 | f3a5d3f8 | Christoph Hellwig | |
1426 | 19a3da7f | Blue Swirl | ret = raw_open_common(bs, filename, flags, 0);
|
1427 | f3a5d3f8 | Christoph Hellwig | if (ret)
|
1428 | f3a5d3f8 | Christoph Hellwig | return ret;
|
1429 | f3a5d3f8 | Christoph Hellwig | |
1430 | f3a5d3f8 | Christoph Hellwig | /* make sure the door isnt locked at this time */
|
1431 | f3a5d3f8 | Christoph Hellwig | ioctl(s->fd, CDIOCALLOW); |
1432 | f3a5d3f8 | Christoph Hellwig | return 0; |
1433 | f3a5d3f8 | Christoph Hellwig | } |
1434 | f3a5d3f8 | Christoph Hellwig | |
1435 | 508c7cb3 | Christoph Hellwig | static int cdrom_probe_device(const char *filename) |
1436 | 508c7cb3 | Christoph Hellwig | { |
1437 | 508c7cb3 | Christoph Hellwig | if (strstart(filename, "/dev/cd", NULL) || |
1438 | 508c7cb3 | Christoph Hellwig | strstart(filename, "/dev/acd", NULL)) |
1439 | 508c7cb3 | Christoph Hellwig | return 100; |
1440 | 508c7cb3 | Christoph Hellwig | return 0; |
1441 | 508c7cb3 | Christoph Hellwig | } |
1442 | 508c7cb3 | Christoph Hellwig | |
1443 | f3a5d3f8 | Christoph Hellwig | static int cdrom_reopen(BlockDriverState *bs) |
1444 | f3a5d3f8 | Christoph Hellwig | { |
1445 | f3a5d3f8 | Christoph Hellwig | BDRVRawState *s = bs->opaque; |
1446 | f3a5d3f8 | Christoph Hellwig | int fd;
|
1447 | f3a5d3f8 | Christoph Hellwig | |
1448 | f3a5d3f8 | Christoph Hellwig | /*
|
1449 | f3a5d3f8 | Christoph Hellwig | * Force reread of possibly changed/newly loaded disc,
|
1450 | f3a5d3f8 | Christoph Hellwig | * FreeBSD seems to not notice sometimes...
|
1451 | f3a5d3f8 | Christoph Hellwig | */
|
1452 | f3a5d3f8 | Christoph Hellwig | if (s->fd >= 0) |
1453 | f3a5d3f8 | Christoph Hellwig | close(s->fd); |
1454 | f3a5d3f8 | Christoph Hellwig | fd = open(bs->filename, s->open_flags, 0644);
|
1455 | f3a5d3f8 | Christoph Hellwig | if (fd < 0) { |
1456 | f3a5d3f8 | Christoph Hellwig | s->fd = -1;
|
1457 | f3a5d3f8 | Christoph Hellwig | return -EIO;
|
1458 | f3a5d3f8 | Christoph Hellwig | } |
1459 | f3a5d3f8 | Christoph Hellwig | s->fd = fd; |
1460 | f3a5d3f8 | Christoph Hellwig | |
1461 | f3a5d3f8 | Christoph Hellwig | /* make sure the door isnt locked at this time */
|
1462 | f3a5d3f8 | Christoph Hellwig | ioctl(s->fd, CDIOCALLOW); |
1463 | f3a5d3f8 | Christoph Hellwig | return 0; |
1464 | f3a5d3f8 | Christoph Hellwig | } |
1465 | f3a5d3f8 | Christoph Hellwig | |
1466 | f3a5d3f8 | Christoph Hellwig | static int cdrom_is_inserted(BlockDriverState *bs) |
1467 | f3a5d3f8 | Christoph Hellwig | { |
1468 | f3a5d3f8 | Christoph Hellwig | return raw_getlength(bs) > 0; |
1469 | f3a5d3f8 | Christoph Hellwig | } |
1470 | f3a5d3f8 | Christoph Hellwig | |
1471 | 822e1cd1 | Markus Armbruster | static void cdrom_eject(BlockDriverState *bs, int eject_flag) |
1472 | f3a5d3f8 | Christoph Hellwig | { |
1473 | f3a5d3f8 | Christoph Hellwig | BDRVRawState *s = bs->opaque; |
1474 | f3a5d3f8 | Christoph Hellwig | |
1475 | f3a5d3f8 | Christoph Hellwig | if (s->fd < 0) |
1476 | 822e1cd1 | Markus Armbruster | return;
|
1477 | f3a5d3f8 | Christoph Hellwig | |
1478 | f3a5d3f8 | Christoph Hellwig | (void) ioctl(s->fd, CDIOCALLOW);
|
1479 | f3a5d3f8 | Christoph Hellwig | |
1480 | f3a5d3f8 | Christoph Hellwig | if (eject_flag) {
|
1481 | f3a5d3f8 | Christoph Hellwig | if (ioctl(s->fd, CDIOCEJECT) < 0) |
1482 | f3a5d3f8 | Christoph Hellwig | perror("CDIOCEJECT");
|
1483 | f3a5d3f8 | Christoph Hellwig | } else {
|
1484 | f3a5d3f8 | Christoph Hellwig | if (ioctl(s->fd, CDIOCCLOSE) < 0) |
1485 | f3a5d3f8 | Christoph Hellwig | perror("CDIOCCLOSE");
|
1486 | f3a5d3f8 | Christoph Hellwig | } |
1487 | f3a5d3f8 | Christoph Hellwig | |
1488 | 822e1cd1 | Markus Armbruster | cdrom_reopen(bs); |
1489 | f3a5d3f8 | Christoph Hellwig | } |
1490 | f3a5d3f8 | Christoph Hellwig | |
1491 | 025e849a | Markus Armbruster | static void cdrom_lock_medium(BlockDriverState *bs, bool locked) |
1492 | f3a5d3f8 | Christoph Hellwig | { |
1493 | f3a5d3f8 | Christoph Hellwig | BDRVRawState *s = bs->opaque; |
1494 | f3a5d3f8 | Christoph Hellwig | |
1495 | f3a5d3f8 | Christoph Hellwig | if (s->fd < 0) |
1496 | 7bf37fed | Markus Armbruster | return;
|
1497 | f3a5d3f8 | Christoph Hellwig | if (ioctl(s->fd, (locked ? CDIOCPREVENT : CDIOCALLOW)) < 0) { |
1498 | f3a5d3f8 | Christoph Hellwig | /*
|
1499 | f3a5d3f8 | Christoph Hellwig | * Note: an error can happen if the distribution automatically
|
1500 | f3a5d3f8 | Christoph Hellwig | * mounts the CD-ROM
|
1501 | f3a5d3f8 | Christoph Hellwig | */
|
1502 | f3a5d3f8 | Christoph Hellwig | /* perror("CDROM_LOCKDOOR"); */
|
1503 | f3a5d3f8 | Christoph Hellwig | } |
1504 | f3a5d3f8 | Christoph Hellwig | } |
1505 | f3a5d3f8 | Christoph Hellwig | |
1506 | f3a5d3f8 | Christoph Hellwig | static BlockDriver bdrv_host_cdrom = {
|
1507 | f3a5d3f8 | Christoph Hellwig | .format_name = "host_cdrom",
|
1508 | 84a12e66 | Christoph Hellwig | .protocol_name = "host_cdrom",
|
1509 | f3a5d3f8 | Christoph Hellwig | .instance_size = sizeof(BDRVRawState),
|
1510 | 508c7cb3 | Christoph Hellwig | .bdrv_probe_device = cdrom_probe_device, |
1511 | 66f82cee | Kevin Wolf | .bdrv_file_open = cdrom_open, |
1512 | f3a5d3f8 | Christoph Hellwig | .bdrv_close = raw_close, |
1513 | f3a5d3f8 | Christoph Hellwig | .bdrv_create = hdev_create, |
1514 | 0b4ce02e | Kevin Wolf | .create_options = raw_create_options, |
1515 | 336c1c12 | Kevin Wolf | .bdrv_has_zero_init = hdev_has_zero_init, |
1516 | f3a5d3f8 | Christoph Hellwig | .bdrv_flush = raw_flush, |
1517 | f3a5d3f8 | Christoph Hellwig | |
1518 | f3a5d3f8 | Christoph Hellwig | .bdrv_aio_readv = raw_aio_readv, |
1519 | f3a5d3f8 | Christoph Hellwig | .bdrv_aio_writev = raw_aio_writev, |
1520 | b2e12bc6 | Christoph Hellwig | .bdrv_aio_flush = raw_aio_flush, |
1521 | f3a5d3f8 | Christoph Hellwig | |
1522 | f3a5d3f8 | Christoph Hellwig | .bdrv_read = raw_read, |
1523 | f3a5d3f8 | Christoph Hellwig | .bdrv_write = raw_write, |
1524 | f3a5d3f8 | Christoph Hellwig | .bdrv_getlength = raw_getlength, |
1525 | 4a1d5e1f | Fam Zheng | .bdrv_get_allocated_file_size |
1526 | 4a1d5e1f | Fam Zheng | = raw_get_allocated_file_size, |
1527 | f3a5d3f8 | Christoph Hellwig | |
1528 | 19cb3738 | bellard | /* removable device support */
|
1529 | f3a5d3f8 | Christoph Hellwig | .bdrv_is_inserted = cdrom_is_inserted, |
1530 | f3a5d3f8 | Christoph Hellwig | .bdrv_eject = cdrom_eject, |
1531 | 025e849a | Markus Armbruster | .bdrv_lock_medium = cdrom_lock_medium, |
1532 | 19cb3738 | bellard | }; |
1533 | f3a5d3f8 | Christoph Hellwig | #endif /* __FreeBSD__ */ |
1534 | 5efa9d5a | Anthony Liguori | |
1535 | 84a12e66 | Christoph Hellwig | static void bdrv_file_init(void) |
1536 | 5efa9d5a | Anthony Liguori | { |
1537 | 508c7cb3 | Christoph Hellwig | /*
|
1538 | 508c7cb3 | Christoph Hellwig | * Register all the drivers. Note that order is important, the driver
|
1539 | 508c7cb3 | Christoph Hellwig | * registered last will get probed first.
|
1540 | 508c7cb3 | Christoph Hellwig | */
|
1541 | 84a12e66 | Christoph Hellwig | bdrv_register(&bdrv_file); |
1542 | 5efa9d5a | Anthony Liguori | bdrv_register(&bdrv_host_device); |
1543 | f3a5d3f8 | Christoph Hellwig | #ifdef __linux__
|
1544 | f3a5d3f8 | Christoph Hellwig | bdrv_register(&bdrv_host_floppy); |
1545 | f3a5d3f8 | Christoph Hellwig | bdrv_register(&bdrv_host_cdrom); |
1546 | f3a5d3f8 | Christoph Hellwig | #endif
|
1547 | a167ba50 | Aurelien Jarno | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
|
1548 | f3a5d3f8 | Christoph Hellwig | bdrv_register(&bdrv_host_cdrom); |
1549 | f3a5d3f8 | Christoph Hellwig | #endif
|
1550 | 5efa9d5a | Anthony Liguori | } |
1551 | 5efa9d5a | Anthony Liguori | |
1552 | 84a12e66 | Christoph Hellwig | block_init(bdrv_file_init); |