root / savevm.c @ bcbdc4d3
History | View | Annotate | Download (41.4 kB)
1 | a672b469 | aliguori | /*
|
---|---|---|---|
2 | a672b469 | aliguori | * QEMU System Emulator
|
3 | a672b469 | aliguori | *
|
4 | a672b469 | aliguori | * Copyright (c) 2003-2008 Fabrice Bellard
|
5 | a672b469 | aliguori | *
|
6 | a672b469 | aliguori | * Permission is hereby granted, free of charge, to any person obtaining a copy
|
7 | a672b469 | aliguori | * of this software and associated documentation files (the "Software"), to deal
|
8 | a672b469 | aliguori | * in the Software without restriction, including without limitation the rights
|
9 | a672b469 | aliguori | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
10 | a672b469 | aliguori | * copies of the Software, and to permit persons to whom the Software is
|
11 | a672b469 | aliguori | * furnished to do so, subject to the following conditions:
|
12 | a672b469 | aliguori | *
|
13 | a672b469 | aliguori | * The above copyright notice and this permission notice shall be included in
|
14 | a672b469 | aliguori | * all copies or substantial portions of the Software.
|
15 | a672b469 | aliguori | *
|
16 | a672b469 | aliguori | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
17 | a672b469 | aliguori | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
18 | a672b469 | aliguori | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
19 | a672b469 | aliguori | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
20 | a672b469 | aliguori | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
21 | a672b469 | aliguori | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
22 | a672b469 | aliguori | * THE SOFTWARE.
|
23 | a672b469 | aliguori | */
|
24 | a672b469 | aliguori | #include <unistd.h> |
25 | a672b469 | aliguori | #include <fcntl.h> |
26 | a672b469 | aliguori | #include <signal.h> |
27 | a672b469 | aliguori | #include <time.h> |
28 | a672b469 | aliguori | #include <errno.h> |
29 | a672b469 | aliguori | #include <sys/time.h> |
30 | a672b469 | aliguori | #include <zlib.h> |
31 | a672b469 | aliguori | |
32 | 71e72a19 | Juan Quintela | /* Needed early for CONFIG_BSD etc. */
|
33 | d40cdb10 | blueswir1 | #include "config-host.h" |
34 | d40cdb10 | blueswir1 | |
35 | a672b469 | aliguori | #ifndef _WIN32
|
36 | a672b469 | aliguori | #include <sys/times.h> |
37 | a672b469 | aliguori | #include <sys/wait.h> |
38 | a672b469 | aliguori | #include <termios.h> |
39 | a672b469 | aliguori | #include <sys/mman.h> |
40 | a672b469 | aliguori | #include <sys/ioctl.h> |
41 | a672b469 | aliguori | #include <sys/resource.h> |
42 | a672b469 | aliguori | #include <sys/socket.h> |
43 | a672b469 | aliguori | #include <netinet/in.h> |
44 | a672b469 | aliguori | #include <net/if.h> |
45 | a672b469 | aliguori | #if defined(__NetBSD__)
|
46 | a672b469 | aliguori | #include <net/if_tap.h> |
47 | a672b469 | aliguori | #endif
|
48 | a672b469 | aliguori | #ifdef __linux__
|
49 | a672b469 | aliguori | #include <linux/if_tun.h> |
50 | a672b469 | aliguori | #endif
|
51 | a672b469 | aliguori | #include <arpa/inet.h> |
52 | a672b469 | aliguori | #include <dirent.h> |
53 | a672b469 | aliguori | #include <netdb.h> |
54 | a672b469 | aliguori | #include <sys/select.h> |
55 | 71e72a19 | Juan Quintela | #ifdef CONFIG_BSD
|
56 | a672b469 | aliguori | #include <sys/stat.h> |
57 | c5e97233 | blueswir1 | #if defined(__FreeBSD__) || defined(__DragonFly__)
|
58 | a672b469 | aliguori | #include <libutil.h> |
59 | a672b469 | aliguori | #else
|
60 | a672b469 | aliguori | #include <util.h> |
61 | a672b469 | aliguori | #endif
|
62 | a672b469 | aliguori | #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
|
63 | a672b469 | aliguori | #include <freebsd/stdlib.h> |
64 | a672b469 | aliguori | #else
|
65 | a672b469 | aliguori | #ifdef __linux__
|
66 | a672b469 | aliguori | #include <pty.h> |
67 | a672b469 | aliguori | #include <malloc.h> |
68 | a672b469 | aliguori | #include <linux/rtc.h> |
69 | a672b469 | aliguori | #endif
|
70 | a672b469 | aliguori | #endif
|
71 | a672b469 | aliguori | #endif
|
72 | a672b469 | aliguori | |
73 | a672b469 | aliguori | #ifdef _WIN32
|
74 | 49dc768d | aliguori | #include <windows.h> |
75 | a672b469 | aliguori | #include <malloc.h> |
76 | a672b469 | aliguori | #include <sys/timeb.h> |
77 | a672b469 | aliguori | #include <mmsystem.h> |
78 | a672b469 | aliguori | #define getopt_long_only getopt_long
|
79 | a672b469 | aliguori | #define memalign(align, size) malloc(size)
|
80 | a672b469 | aliguori | #endif
|
81 | a672b469 | aliguori | |
82 | 511d2b14 | blueswir1 | #include "qemu-common.h" |
83 | 511d2b14 | blueswir1 | #include "hw/hw.h" |
84 | 511d2b14 | blueswir1 | #include "net.h" |
85 | 511d2b14 | blueswir1 | #include "monitor.h" |
86 | 511d2b14 | blueswir1 | #include "sysemu.h" |
87 | 511d2b14 | blueswir1 | #include "qemu-timer.h" |
88 | 511d2b14 | blueswir1 | #include "qemu-char.h" |
89 | 511d2b14 | blueswir1 | #include "block.h" |
90 | 511d2b14 | blueswir1 | #include "audio/audio.h" |
91 | 511d2b14 | blueswir1 | #include "migration.h" |
92 | 511d2b14 | blueswir1 | #include "qemu_socket.h" |
93 | 511d2b14 | blueswir1 | |
94 | a672b469 | aliguori | /* point to the block driver where the snapshots are managed */
|
95 | a672b469 | aliguori | static BlockDriverState *bs_snapshots;
|
96 | a672b469 | aliguori | |
97 | a672b469 | aliguori | #define SELF_ANNOUNCE_ROUNDS 5 |
98 | a672b469 | aliguori | #define ETH_P_EXPERIMENTAL 0x01F1 /* just a number */ |
99 | a672b469 | aliguori | //#define ETH_P_EXPERIMENTAL 0x0012 /* make it the size of the packet */
|
100 | a672b469 | aliguori | #define EXPERIMENTAL_MAGIC 0xf1f23f4f |
101 | a672b469 | aliguori | |
102 | a672b469 | aliguori | static int announce_self_create(uint8_t *buf, |
103 | a672b469 | aliguori | uint8_t *mac_addr) |
104 | a672b469 | aliguori | { |
105 | a672b469 | aliguori | uint32_t magic = EXPERIMENTAL_MAGIC; |
106 | a672b469 | aliguori | uint16_t proto = htons(ETH_P_EXPERIMENTAL); |
107 | a672b469 | aliguori | |
108 | a672b469 | aliguori | /* FIXME: should we send a different packet (arp/rarp/ping)? */
|
109 | a672b469 | aliguori | |
110 | 976305b7 | Gleb Natapov | memset(buf, 0, 64); |
111 | a672b469 | aliguori | memset(buf, 0xff, 6); /* h_dst */ |
112 | a672b469 | aliguori | memcpy(buf + 6, mac_addr, 6); /* h_src */ |
113 | a672b469 | aliguori | memcpy(buf + 12, &proto, 2); /* h_proto */ |
114 | a672b469 | aliguori | memcpy(buf + 14, &magic, 4); /* magic */ |
115 | a672b469 | aliguori | |
116 | 976305b7 | Gleb Natapov | return 64; /* len */ |
117 | a672b469 | aliguori | } |
118 | a672b469 | aliguori | |
119 | ed8b330b | Gleb Natapov | static void qemu_announce_self_once(void *opaque) |
120 | a672b469 | aliguori | { |
121 | ed8b330b | Gleb Natapov | int i, len;
|
122 | a672b469 | aliguori | VLANState *vlan; |
123 | a672b469 | aliguori | VLANClientState *vc; |
124 | a672b469 | aliguori | uint8_t buf[256];
|
125 | ed8b330b | Gleb Natapov | static int count = SELF_ANNOUNCE_ROUNDS; |
126 | ed8b330b | Gleb Natapov | QEMUTimer *timer = *(QEMUTimer **)opaque; |
127 | a672b469 | aliguori | |
128 | 3450df30 | aliguori | for (i = 0; i < MAX_NICS; i++) { |
129 | 3450df30 | aliguori | if (!nd_table[i].used)
|
130 | 3450df30 | aliguori | continue;
|
131 | a672b469 | aliguori | len = announce_self_create(buf, nd_table[i].macaddr); |
132 | a672b469 | aliguori | vlan = nd_table[i].vlan; |
133 | ed8b330b | Gleb Natapov | for(vc = vlan->first_client; vc != NULL; vc = vc->next) { |
134 | e3f5ec2b | Mark McLoughlin | vc->receive(vc, buf, len); |
135 | a672b469 | aliguori | } |
136 | a672b469 | aliguori | } |
137 | ed8b330b | Gleb Natapov | if (count--) {
|
138 | ed8b330b | Gleb Natapov | qemu_mod_timer(timer, qemu_get_clock(rt_clock) + 100);
|
139 | ed8b330b | Gleb Natapov | } else {
|
140 | ed8b330b | Gleb Natapov | qemu_del_timer(timer); |
141 | ed8b330b | Gleb Natapov | qemu_free_timer(timer); |
142 | ed8b330b | Gleb Natapov | } |
143 | ed8b330b | Gleb Natapov | } |
144 | ed8b330b | Gleb Natapov | |
145 | ed8b330b | Gleb Natapov | void qemu_announce_self(void) |
146 | ed8b330b | Gleb Natapov | { |
147 | ed8b330b | Gleb Natapov | static QEMUTimer *timer;
|
148 | ed8b330b | Gleb Natapov | timer = qemu_new_timer(rt_clock, qemu_announce_self_once, &timer); |
149 | ed8b330b | Gleb Natapov | qemu_announce_self_once(&timer); |
150 | a672b469 | aliguori | } |
151 | a672b469 | aliguori | |
152 | a672b469 | aliguori | /***********************************************************/
|
153 | a672b469 | aliguori | /* savevm/loadvm support */
|
154 | a672b469 | aliguori | |
155 | a672b469 | aliguori | #define IO_BUF_SIZE 32768 |
156 | a672b469 | aliguori | |
157 | a672b469 | aliguori | struct QEMUFile {
|
158 | a672b469 | aliguori | QEMUFilePutBufferFunc *put_buffer; |
159 | a672b469 | aliguori | QEMUFileGetBufferFunc *get_buffer; |
160 | a672b469 | aliguori | QEMUFileCloseFunc *close; |
161 | a672b469 | aliguori | QEMUFileRateLimit *rate_limit; |
162 | 19629537 | Glauber Costa | QEMUFileSetRateLimit *set_rate_limit; |
163 | a672b469 | aliguori | void *opaque;
|
164 | a672b469 | aliguori | int is_write;
|
165 | a672b469 | aliguori | |
166 | a672b469 | aliguori | int64_t buf_offset; /* start of buffer when writing, end of buffer
|
167 | a672b469 | aliguori | when reading */
|
168 | a672b469 | aliguori | int buf_index;
|
169 | a672b469 | aliguori | int buf_size; /* 0 when writing */ |
170 | a672b469 | aliguori | uint8_t buf[IO_BUF_SIZE]; |
171 | a672b469 | aliguori | |
172 | a672b469 | aliguori | int has_error;
|
173 | a672b469 | aliguori | }; |
174 | a672b469 | aliguori | |
175 | 7f79dd28 | Paolo Bonzini | typedef struct QEMUFileStdio |
176 | a672b469 | aliguori | { |
177 | 7f79dd28 | Paolo Bonzini | FILE *stdio_file; |
178 | a672b469 | aliguori | QEMUFile *file; |
179 | 7f79dd28 | Paolo Bonzini | } QEMUFileStdio; |
180 | a672b469 | aliguori | |
181 | a672b469 | aliguori | typedef struct QEMUFileSocket |
182 | a672b469 | aliguori | { |
183 | a672b469 | aliguori | int fd;
|
184 | a672b469 | aliguori | QEMUFile *file; |
185 | a672b469 | aliguori | } QEMUFileSocket; |
186 | a672b469 | aliguori | |
187 | a672b469 | aliguori | static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
188 | a672b469 | aliguori | { |
189 | a672b469 | aliguori | QEMUFileSocket *s = opaque; |
190 | a672b469 | aliguori | ssize_t len; |
191 | a672b469 | aliguori | |
192 | a672b469 | aliguori | do {
|
193 | c5b76b38 | Blue Swirl | len = recv(s->fd, (void *)buf, size, 0); |
194 | a672b469 | aliguori | } while (len == -1 && socket_error() == EINTR); |
195 | a672b469 | aliguori | |
196 | a672b469 | aliguori | if (len == -1) |
197 | a672b469 | aliguori | len = -socket_error(); |
198 | a672b469 | aliguori | |
199 | a672b469 | aliguori | return len;
|
200 | a672b469 | aliguori | } |
201 | a672b469 | aliguori | |
202 | a672b469 | aliguori | static int socket_close(void *opaque) |
203 | a672b469 | aliguori | { |
204 | a672b469 | aliguori | QEMUFileSocket *s = opaque; |
205 | a672b469 | aliguori | qemu_free(s); |
206 | a672b469 | aliguori | return 0; |
207 | a672b469 | aliguori | } |
208 | a672b469 | aliguori | |
209 | 7f79dd28 | Paolo Bonzini | static int stdio_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size) |
210 | a672b469 | aliguori | { |
211 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
212 | 7f79dd28 | Paolo Bonzini | return fwrite(buf, 1, size, s->stdio_file); |
213 | a672b469 | aliguori | } |
214 | a672b469 | aliguori | |
215 | 7f79dd28 | Paolo Bonzini | static int stdio_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
216 | a672b469 | aliguori | { |
217 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
218 | 7f79dd28 | Paolo Bonzini | FILE *fp = s->stdio_file; |
219 | 8a67ec4d | Uri Lublin | int bytes;
|
220 | 8a67ec4d | Uri Lublin | |
221 | 8a67ec4d | Uri Lublin | do {
|
222 | 8a67ec4d | Uri Lublin | clearerr(fp); |
223 | 8a67ec4d | Uri Lublin | bytes = fread(buf, 1, size, fp);
|
224 | 8a67ec4d | Uri Lublin | } while ((bytes == 0) && ferror(fp) && (errno == EINTR)); |
225 | 8a67ec4d | Uri Lublin | return bytes;
|
226 | a672b469 | aliguori | } |
227 | a672b469 | aliguori | |
228 | 7f79dd28 | Paolo Bonzini | static int stdio_pclose(void *opaque) |
229 | 7f79dd28 | Paolo Bonzini | { |
230 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
231 | 7f79dd28 | Paolo Bonzini | pclose(s->stdio_file); |
232 | 7f79dd28 | Paolo Bonzini | qemu_free(s); |
233 | 7f79dd28 | Paolo Bonzini | return 0; |
234 | 7f79dd28 | Paolo Bonzini | } |
235 | 7f79dd28 | Paolo Bonzini | |
236 | 7f79dd28 | Paolo Bonzini | static int stdio_fclose(void *opaque) |
237 | a672b469 | aliguori | { |
238 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
239 | 7f79dd28 | Paolo Bonzini | fclose(s->stdio_file); |
240 | a672b469 | aliguori | qemu_free(s); |
241 | a672b469 | aliguori | return 0; |
242 | a672b469 | aliguori | } |
243 | a672b469 | aliguori | |
244 | 7f79dd28 | Paolo Bonzini | QEMUFile *qemu_popen(FILE *stdio_file, const char *mode) |
245 | a672b469 | aliguori | { |
246 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s; |
247 | a672b469 | aliguori | |
248 | 7f79dd28 | Paolo Bonzini | if (stdio_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) { |
249 | a672b469 | aliguori | fprintf(stderr, "qemu_popen: Argument validity check failed\n");
|
250 | a672b469 | aliguori | return NULL; |
251 | a672b469 | aliguori | } |
252 | a672b469 | aliguori | |
253 | 7f79dd28 | Paolo Bonzini | s = qemu_mallocz(sizeof(QEMUFileStdio));
|
254 | a672b469 | aliguori | |
255 | 7f79dd28 | Paolo Bonzini | s->stdio_file = stdio_file; |
256 | a672b469 | aliguori | |
257 | a672b469 | aliguori | if(mode[0] == 'r') { |
258 | 7f79dd28 | Paolo Bonzini | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_pclose, NULL, NULL); |
259 | a672b469 | aliguori | } else {
|
260 | 7f79dd28 | Paolo Bonzini | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_pclose, NULL, NULL); |
261 | a672b469 | aliguori | } |
262 | a672b469 | aliguori | return s->file;
|
263 | a672b469 | aliguori | } |
264 | a672b469 | aliguori | |
265 | a672b469 | aliguori | QEMUFile *qemu_popen_cmd(const char *command, const char *mode) |
266 | a672b469 | aliguori | { |
267 | a672b469 | aliguori | FILE *popen_file; |
268 | a672b469 | aliguori | |
269 | a672b469 | aliguori | popen_file = popen(command, mode); |
270 | a672b469 | aliguori | if(popen_file == NULL) { |
271 | a672b469 | aliguori | return NULL; |
272 | a672b469 | aliguori | } |
273 | a672b469 | aliguori | |
274 | a672b469 | aliguori | return qemu_popen(popen_file, mode);
|
275 | a672b469 | aliguori | } |
276 | a672b469 | aliguori | |
277 | 7f79dd28 | Paolo Bonzini | int qemu_stdio_fd(QEMUFile *f)
|
278 | 8a43b1ea | Chris Lalancette | { |
279 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *p; |
280 | 8a43b1ea | Chris Lalancette | int fd;
|
281 | 8a43b1ea | Chris Lalancette | |
282 | 7f79dd28 | Paolo Bonzini | p = (QEMUFileStdio *)f->opaque; |
283 | 7f79dd28 | Paolo Bonzini | fd = fileno(p->stdio_file); |
284 | 8a43b1ea | Chris Lalancette | |
285 | 8a43b1ea | Chris Lalancette | return fd;
|
286 | 8a43b1ea | Chris Lalancette | } |
287 | 8a43b1ea | Chris Lalancette | |
288 | 5ac1fad3 | Paolo Bonzini | QEMUFile *qemu_fdopen(int fd, const char *mode) |
289 | 5ac1fad3 | Paolo Bonzini | { |
290 | 5ac1fad3 | Paolo Bonzini | QEMUFileStdio *s; |
291 | 5ac1fad3 | Paolo Bonzini | |
292 | 5ac1fad3 | Paolo Bonzini | if (mode == NULL || |
293 | 5ac1fad3 | Paolo Bonzini | (mode[0] != 'r' && mode[0] != 'w') || |
294 | 5ac1fad3 | Paolo Bonzini | mode[1] != 'b' || mode[2] != 0) { |
295 | 5ac1fad3 | Paolo Bonzini | fprintf(stderr, "qemu_fdopen: Argument validity check failed\n");
|
296 | 5ac1fad3 | Paolo Bonzini | return NULL; |
297 | 5ac1fad3 | Paolo Bonzini | } |
298 | 5ac1fad3 | Paolo Bonzini | |
299 | 5ac1fad3 | Paolo Bonzini | s = qemu_mallocz(sizeof(QEMUFileStdio));
|
300 | 5ac1fad3 | Paolo Bonzini | s->stdio_file = fdopen(fd, mode); |
301 | 5ac1fad3 | Paolo Bonzini | if (!s->stdio_file)
|
302 | 5ac1fad3 | Paolo Bonzini | goto fail;
|
303 | 5ac1fad3 | Paolo Bonzini | |
304 | 5ac1fad3 | Paolo Bonzini | if(mode[0] == 'r') { |
305 | 5ac1fad3 | Paolo Bonzini | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_fclose, NULL, NULL); |
306 | 5ac1fad3 | Paolo Bonzini | } else {
|
307 | 5ac1fad3 | Paolo Bonzini | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_fclose, NULL, NULL); |
308 | 5ac1fad3 | Paolo Bonzini | } |
309 | 5ac1fad3 | Paolo Bonzini | return s->file;
|
310 | 5ac1fad3 | Paolo Bonzini | |
311 | 5ac1fad3 | Paolo Bonzini | fail:
|
312 | 5ac1fad3 | Paolo Bonzini | qemu_free(s); |
313 | 5ac1fad3 | Paolo Bonzini | return NULL; |
314 | 5ac1fad3 | Paolo Bonzini | } |
315 | 5ac1fad3 | Paolo Bonzini | |
316 | a672b469 | aliguori | QEMUFile *qemu_fopen_socket(int fd)
|
317 | a672b469 | aliguori | { |
318 | a672b469 | aliguori | QEMUFileSocket *s = qemu_mallocz(sizeof(QEMUFileSocket));
|
319 | a672b469 | aliguori | |
320 | a672b469 | aliguori | s->fd = fd; |
321 | 19629537 | Glauber Costa | s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close, NULL, NULL); |
322 | a672b469 | aliguori | return s->file;
|
323 | a672b469 | aliguori | } |
324 | a672b469 | aliguori | |
325 | a672b469 | aliguori | static int file_put_buffer(void *opaque, const uint8_t *buf, |
326 | a672b469 | aliguori | int64_t pos, int size)
|
327 | a672b469 | aliguori | { |
328 | a672b469 | aliguori | QEMUFileStdio *s = opaque; |
329 | 7f79dd28 | Paolo Bonzini | fseek(s->stdio_file, pos, SEEK_SET); |
330 | 7f79dd28 | Paolo Bonzini | fwrite(buf, 1, size, s->stdio_file);
|
331 | a672b469 | aliguori | return size;
|
332 | a672b469 | aliguori | } |
333 | a672b469 | aliguori | |
334 | a672b469 | aliguori | static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
335 | a672b469 | aliguori | { |
336 | a672b469 | aliguori | QEMUFileStdio *s = opaque; |
337 | 7f79dd28 | Paolo Bonzini | fseek(s->stdio_file, pos, SEEK_SET); |
338 | 7f79dd28 | Paolo Bonzini | return fread(buf, 1, size, s->stdio_file); |
339 | a672b469 | aliguori | } |
340 | a672b469 | aliguori | |
341 | a672b469 | aliguori | QEMUFile *qemu_fopen(const char *filename, const char *mode) |
342 | a672b469 | aliguori | { |
343 | a672b469 | aliguori | QEMUFileStdio *s; |
344 | a672b469 | aliguori | |
345 | 7f79dd28 | Paolo Bonzini | if (mode == NULL || |
346 | 7f79dd28 | Paolo Bonzini | (mode[0] != 'r' && mode[0] != 'w') || |
347 | 7f79dd28 | Paolo Bonzini | mode[1] != 'b' || mode[2] != 0) { |
348 | 7f79dd28 | Paolo Bonzini | fprintf(stderr, "qemu_fdopen: Argument validity check failed\n");
|
349 | 7f79dd28 | Paolo Bonzini | return NULL; |
350 | 7f79dd28 | Paolo Bonzini | } |
351 | 7f79dd28 | Paolo Bonzini | |
352 | a672b469 | aliguori | s = qemu_mallocz(sizeof(QEMUFileStdio));
|
353 | a672b469 | aliguori | |
354 | 7f79dd28 | Paolo Bonzini | s->stdio_file = fopen(filename, mode); |
355 | 7f79dd28 | Paolo Bonzini | if (!s->stdio_file)
|
356 | a672b469 | aliguori | goto fail;
|
357 | a672b469 | aliguori | |
358 | 7f79dd28 | Paolo Bonzini | if(mode[0] == 'w') { |
359 | 7f79dd28 | Paolo Bonzini | s->file = qemu_fopen_ops(s, file_put_buffer, NULL, stdio_fclose, NULL, NULL); |
360 | 7f79dd28 | Paolo Bonzini | } else {
|
361 | 7f79dd28 | Paolo Bonzini | s->file = qemu_fopen_ops(s, NULL, file_get_buffer, stdio_fclose, NULL, NULL); |
362 | 7f79dd28 | Paolo Bonzini | } |
363 | 7f79dd28 | Paolo Bonzini | return s->file;
|
364 | a672b469 | aliguori | fail:
|
365 | a672b469 | aliguori | qemu_free(s); |
366 | a672b469 | aliguori | return NULL; |
367 | a672b469 | aliguori | } |
368 | a672b469 | aliguori | |
369 | 178e08a5 | aliguori | static int block_put_buffer(void *opaque, const uint8_t *buf, |
370 | a672b469 | aliguori | int64_t pos, int size)
|
371 | a672b469 | aliguori | { |
372 | 45566e9c | Christoph Hellwig | bdrv_save_vmstate(opaque, buf, pos, size); |
373 | a672b469 | aliguori | return size;
|
374 | a672b469 | aliguori | } |
375 | a672b469 | aliguori | |
376 | 178e08a5 | aliguori | static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
377 | a672b469 | aliguori | { |
378 | 45566e9c | Christoph Hellwig | return bdrv_load_vmstate(opaque, buf, pos, size);
|
379 | a672b469 | aliguori | } |
380 | a672b469 | aliguori | |
381 | a672b469 | aliguori | static int bdrv_fclose(void *opaque) |
382 | a672b469 | aliguori | { |
383 | a672b469 | aliguori | return 0; |
384 | a672b469 | aliguori | } |
385 | a672b469 | aliguori | |
386 | 45566e9c | Christoph Hellwig | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable) |
387 | a672b469 | aliguori | { |
388 | a672b469 | aliguori | if (is_writable)
|
389 | 45566e9c | Christoph Hellwig | return qemu_fopen_ops(bs, block_put_buffer, NULL, bdrv_fclose, NULL, NULL); |
390 | 45566e9c | Christoph Hellwig | return qemu_fopen_ops(bs, NULL, block_get_buffer, bdrv_fclose, NULL, NULL); |
391 | a672b469 | aliguori | } |
392 | a672b469 | aliguori | |
393 | a672b469 | aliguori | QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer,
|
394 | a672b469 | aliguori | QEMUFileGetBufferFunc *get_buffer, |
395 | a672b469 | aliguori | QEMUFileCloseFunc *close, |
396 | 19629537 | Glauber Costa | QEMUFileRateLimit *rate_limit, |
397 | 19629537 | Glauber Costa | QEMUFileSetRateLimit *set_rate_limit) |
398 | a672b469 | aliguori | { |
399 | a672b469 | aliguori | QEMUFile *f; |
400 | a672b469 | aliguori | |
401 | a672b469 | aliguori | f = qemu_mallocz(sizeof(QEMUFile));
|
402 | a672b469 | aliguori | |
403 | a672b469 | aliguori | f->opaque = opaque; |
404 | a672b469 | aliguori | f->put_buffer = put_buffer; |
405 | a672b469 | aliguori | f->get_buffer = get_buffer; |
406 | a672b469 | aliguori | f->close = close; |
407 | a672b469 | aliguori | f->rate_limit = rate_limit; |
408 | 19629537 | Glauber Costa | f->set_rate_limit = set_rate_limit; |
409 | a672b469 | aliguori | f->is_write = 0;
|
410 | a672b469 | aliguori | |
411 | a672b469 | aliguori | return f;
|
412 | a672b469 | aliguori | } |
413 | a672b469 | aliguori | |
414 | a672b469 | aliguori | int qemu_file_has_error(QEMUFile *f)
|
415 | a672b469 | aliguori | { |
416 | a672b469 | aliguori | return f->has_error;
|
417 | a672b469 | aliguori | } |
418 | a672b469 | aliguori | |
419 | 4dabe248 | aliguori | void qemu_file_set_error(QEMUFile *f)
|
420 | 4dabe248 | aliguori | { |
421 | 4dabe248 | aliguori | f->has_error = 1;
|
422 | 4dabe248 | aliguori | } |
423 | 4dabe248 | aliguori | |
424 | a672b469 | aliguori | void qemu_fflush(QEMUFile *f)
|
425 | a672b469 | aliguori | { |
426 | a672b469 | aliguori | if (!f->put_buffer)
|
427 | a672b469 | aliguori | return;
|
428 | a672b469 | aliguori | |
429 | a672b469 | aliguori | if (f->is_write && f->buf_index > 0) { |
430 | a672b469 | aliguori | int len;
|
431 | a672b469 | aliguori | |
432 | a672b469 | aliguori | len = f->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index); |
433 | a672b469 | aliguori | if (len > 0) |
434 | a672b469 | aliguori | f->buf_offset += f->buf_index; |
435 | a672b469 | aliguori | else
|
436 | a672b469 | aliguori | f->has_error = 1;
|
437 | a672b469 | aliguori | f->buf_index = 0;
|
438 | a672b469 | aliguori | } |
439 | a672b469 | aliguori | } |
440 | a672b469 | aliguori | |
441 | a672b469 | aliguori | static void qemu_fill_buffer(QEMUFile *f) |
442 | a672b469 | aliguori | { |
443 | a672b469 | aliguori | int len;
|
444 | a672b469 | aliguori | |
445 | a672b469 | aliguori | if (!f->get_buffer)
|
446 | a672b469 | aliguori | return;
|
447 | a672b469 | aliguori | |
448 | a672b469 | aliguori | if (f->is_write)
|
449 | a672b469 | aliguori | abort(); |
450 | a672b469 | aliguori | |
451 | a672b469 | aliguori | len = f->get_buffer(f->opaque, f->buf, f->buf_offset, IO_BUF_SIZE); |
452 | a672b469 | aliguori | if (len > 0) { |
453 | a672b469 | aliguori | f->buf_index = 0;
|
454 | a672b469 | aliguori | f->buf_size = len; |
455 | a672b469 | aliguori | f->buf_offset += len; |
456 | a672b469 | aliguori | } else if (len != -EAGAIN) |
457 | a672b469 | aliguori | f->has_error = 1;
|
458 | a672b469 | aliguori | } |
459 | a672b469 | aliguori | |
460 | a672b469 | aliguori | int qemu_fclose(QEMUFile *f)
|
461 | a672b469 | aliguori | { |
462 | a672b469 | aliguori | int ret = 0; |
463 | a672b469 | aliguori | qemu_fflush(f); |
464 | a672b469 | aliguori | if (f->close)
|
465 | a672b469 | aliguori | ret = f->close(f->opaque); |
466 | a672b469 | aliguori | qemu_free(f); |
467 | a672b469 | aliguori | return ret;
|
468 | a672b469 | aliguori | } |
469 | a672b469 | aliguori | |
470 | a672b469 | aliguori | void qemu_file_put_notify(QEMUFile *f)
|
471 | a672b469 | aliguori | { |
472 | a672b469 | aliguori | f->put_buffer(f->opaque, NULL, 0, 0); |
473 | a672b469 | aliguori | } |
474 | a672b469 | aliguori | |
475 | a672b469 | aliguori | void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size) |
476 | a672b469 | aliguori | { |
477 | a672b469 | aliguori | int l;
|
478 | a672b469 | aliguori | |
479 | a672b469 | aliguori | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { |
480 | a672b469 | aliguori | fprintf(stderr, |
481 | a672b469 | aliguori | "Attempted to write to buffer while read buffer is not empty\n");
|
482 | a672b469 | aliguori | abort(); |
483 | a672b469 | aliguori | } |
484 | a672b469 | aliguori | |
485 | a672b469 | aliguori | while (!f->has_error && size > 0) { |
486 | a672b469 | aliguori | l = IO_BUF_SIZE - f->buf_index; |
487 | a672b469 | aliguori | if (l > size)
|
488 | a672b469 | aliguori | l = size; |
489 | a672b469 | aliguori | memcpy(f->buf + f->buf_index, buf, l); |
490 | a672b469 | aliguori | f->is_write = 1;
|
491 | a672b469 | aliguori | f->buf_index += l; |
492 | a672b469 | aliguori | buf += l; |
493 | a672b469 | aliguori | size -= l; |
494 | a672b469 | aliguori | if (f->buf_index >= IO_BUF_SIZE)
|
495 | a672b469 | aliguori | qemu_fflush(f); |
496 | a672b469 | aliguori | } |
497 | a672b469 | aliguori | } |
498 | a672b469 | aliguori | |
499 | a672b469 | aliguori | void qemu_put_byte(QEMUFile *f, int v) |
500 | a672b469 | aliguori | { |
501 | a672b469 | aliguori | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { |
502 | a672b469 | aliguori | fprintf(stderr, |
503 | a672b469 | aliguori | "Attempted to write to buffer while read buffer is not empty\n");
|
504 | a672b469 | aliguori | abort(); |
505 | a672b469 | aliguori | } |
506 | a672b469 | aliguori | |
507 | a672b469 | aliguori | f->buf[f->buf_index++] = v; |
508 | a672b469 | aliguori | f->is_write = 1;
|
509 | a672b469 | aliguori | if (f->buf_index >= IO_BUF_SIZE)
|
510 | a672b469 | aliguori | qemu_fflush(f); |
511 | a672b469 | aliguori | } |
512 | a672b469 | aliguori | |
513 | a672b469 | aliguori | int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size1) |
514 | a672b469 | aliguori | { |
515 | a672b469 | aliguori | int size, l;
|
516 | a672b469 | aliguori | |
517 | a672b469 | aliguori | if (f->is_write)
|
518 | a672b469 | aliguori | abort(); |
519 | a672b469 | aliguori | |
520 | a672b469 | aliguori | size = size1; |
521 | a672b469 | aliguori | while (size > 0) { |
522 | a672b469 | aliguori | l = f->buf_size - f->buf_index; |
523 | a672b469 | aliguori | if (l == 0) { |
524 | a672b469 | aliguori | qemu_fill_buffer(f); |
525 | a672b469 | aliguori | l = f->buf_size - f->buf_index; |
526 | a672b469 | aliguori | if (l == 0) |
527 | a672b469 | aliguori | break;
|
528 | a672b469 | aliguori | } |
529 | a672b469 | aliguori | if (l > size)
|
530 | a672b469 | aliguori | l = size; |
531 | a672b469 | aliguori | memcpy(buf, f->buf + f->buf_index, l); |
532 | a672b469 | aliguori | f->buf_index += l; |
533 | a672b469 | aliguori | buf += l; |
534 | a672b469 | aliguori | size -= l; |
535 | a672b469 | aliguori | } |
536 | a672b469 | aliguori | return size1 - size;
|
537 | a672b469 | aliguori | } |
538 | a672b469 | aliguori | |
539 | a672b469 | aliguori | int qemu_get_byte(QEMUFile *f)
|
540 | a672b469 | aliguori | { |
541 | a672b469 | aliguori | if (f->is_write)
|
542 | a672b469 | aliguori | abort(); |
543 | a672b469 | aliguori | |
544 | a672b469 | aliguori | if (f->buf_index >= f->buf_size) {
|
545 | a672b469 | aliguori | qemu_fill_buffer(f); |
546 | a672b469 | aliguori | if (f->buf_index >= f->buf_size)
|
547 | a672b469 | aliguori | return 0; |
548 | a672b469 | aliguori | } |
549 | a672b469 | aliguori | return f->buf[f->buf_index++];
|
550 | a672b469 | aliguori | } |
551 | a672b469 | aliguori | |
552 | a672b469 | aliguori | int64_t qemu_ftell(QEMUFile *f) |
553 | a672b469 | aliguori | { |
554 | a672b469 | aliguori | return f->buf_offset - f->buf_size + f->buf_index;
|
555 | a672b469 | aliguori | } |
556 | a672b469 | aliguori | |
557 | a672b469 | aliguori | int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence)
|
558 | a672b469 | aliguori | { |
559 | a672b469 | aliguori | if (whence == SEEK_SET) {
|
560 | a672b469 | aliguori | /* nothing to do */
|
561 | a672b469 | aliguori | } else if (whence == SEEK_CUR) { |
562 | a672b469 | aliguori | pos += qemu_ftell(f); |
563 | a672b469 | aliguori | } else {
|
564 | a672b469 | aliguori | /* SEEK_END not supported */
|
565 | a672b469 | aliguori | return -1; |
566 | a672b469 | aliguori | } |
567 | a672b469 | aliguori | if (f->put_buffer) {
|
568 | a672b469 | aliguori | qemu_fflush(f); |
569 | a672b469 | aliguori | f->buf_offset = pos; |
570 | a672b469 | aliguori | } else {
|
571 | a672b469 | aliguori | f->buf_offset = pos; |
572 | a672b469 | aliguori | f->buf_index = 0;
|
573 | a672b469 | aliguori | f->buf_size = 0;
|
574 | a672b469 | aliguori | } |
575 | a672b469 | aliguori | return pos;
|
576 | a672b469 | aliguori | } |
577 | a672b469 | aliguori | |
578 | a672b469 | aliguori | int qemu_file_rate_limit(QEMUFile *f)
|
579 | a672b469 | aliguori | { |
580 | a672b469 | aliguori | if (f->rate_limit)
|
581 | a672b469 | aliguori | return f->rate_limit(f->opaque);
|
582 | a672b469 | aliguori | |
583 | a672b469 | aliguori | return 0; |
584 | a672b469 | aliguori | } |
585 | a672b469 | aliguori | |
586 | 19629537 | Glauber Costa | size_t qemu_file_set_rate_limit(QEMUFile *f, size_t new_rate) |
587 | 19629537 | Glauber Costa | { |
588 | 0bb05eaf | Glauber Costa | /* any failed or completed migration keeps its state to allow probing of
|
589 | 0bb05eaf | Glauber Costa | * migration data, but has no associated file anymore */
|
590 | 0bb05eaf | Glauber Costa | if (f && f->set_rate_limit)
|
591 | 19629537 | Glauber Costa | return f->set_rate_limit(f->opaque, new_rate);
|
592 | 19629537 | Glauber Costa | |
593 | 19629537 | Glauber Costa | return 0; |
594 | 19629537 | Glauber Costa | } |
595 | 19629537 | Glauber Costa | |
596 | a672b469 | aliguori | void qemu_put_be16(QEMUFile *f, unsigned int v) |
597 | a672b469 | aliguori | { |
598 | a672b469 | aliguori | qemu_put_byte(f, v >> 8);
|
599 | a672b469 | aliguori | qemu_put_byte(f, v); |
600 | a672b469 | aliguori | } |
601 | a672b469 | aliguori | |
602 | a672b469 | aliguori | void qemu_put_be32(QEMUFile *f, unsigned int v) |
603 | a672b469 | aliguori | { |
604 | a672b469 | aliguori | qemu_put_byte(f, v >> 24);
|
605 | a672b469 | aliguori | qemu_put_byte(f, v >> 16);
|
606 | a672b469 | aliguori | qemu_put_byte(f, v >> 8);
|
607 | a672b469 | aliguori | qemu_put_byte(f, v); |
608 | a672b469 | aliguori | } |
609 | a672b469 | aliguori | |
610 | a672b469 | aliguori | void qemu_put_be64(QEMUFile *f, uint64_t v)
|
611 | a672b469 | aliguori | { |
612 | a672b469 | aliguori | qemu_put_be32(f, v >> 32);
|
613 | a672b469 | aliguori | qemu_put_be32(f, v); |
614 | a672b469 | aliguori | } |
615 | a672b469 | aliguori | |
616 | a672b469 | aliguori | unsigned int qemu_get_be16(QEMUFile *f) |
617 | a672b469 | aliguori | { |
618 | a672b469 | aliguori | unsigned int v; |
619 | a672b469 | aliguori | v = qemu_get_byte(f) << 8;
|
620 | a672b469 | aliguori | v |= qemu_get_byte(f); |
621 | a672b469 | aliguori | return v;
|
622 | a672b469 | aliguori | } |
623 | a672b469 | aliguori | |
624 | a672b469 | aliguori | unsigned int qemu_get_be32(QEMUFile *f) |
625 | a672b469 | aliguori | { |
626 | a672b469 | aliguori | unsigned int v; |
627 | a672b469 | aliguori | v = qemu_get_byte(f) << 24;
|
628 | a672b469 | aliguori | v |= qemu_get_byte(f) << 16;
|
629 | a672b469 | aliguori | v |= qemu_get_byte(f) << 8;
|
630 | a672b469 | aliguori | v |= qemu_get_byte(f); |
631 | a672b469 | aliguori | return v;
|
632 | a672b469 | aliguori | } |
633 | a672b469 | aliguori | |
634 | a672b469 | aliguori | uint64_t qemu_get_be64(QEMUFile *f) |
635 | a672b469 | aliguori | { |
636 | a672b469 | aliguori | uint64_t v; |
637 | a672b469 | aliguori | v = (uint64_t)qemu_get_be32(f) << 32;
|
638 | a672b469 | aliguori | v |= qemu_get_be32(f); |
639 | a672b469 | aliguori | return v;
|
640 | a672b469 | aliguori | } |
641 | a672b469 | aliguori | |
642 | 9ed7d6ae | Juan Quintela | /* 8 bit int */
|
643 | 9ed7d6ae | Juan Quintela | |
644 | 9ed7d6ae | Juan Quintela | static int get_int8(QEMUFile *f, void *pv, size_t size) |
645 | 9ed7d6ae | Juan Quintela | { |
646 | 9ed7d6ae | Juan Quintela | int8_t *v = pv; |
647 | 9ed7d6ae | Juan Quintela | qemu_get_s8s(f, v); |
648 | 9ed7d6ae | Juan Quintela | return 0; |
649 | 9ed7d6ae | Juan Quintela | } |
650 | 9ed7d6ae | Juan Quintela | |
651 | 9ed7d6ae | Juan Quintela | static void put_int8(QEMUFile *f, const void *pv, size_t size) |
652 | 9ed7d6ae | Juan Quintela | { |
653 | 9ed7d6ae | Juan Quintela | const int8_t *v = pv;
|
654 | 9ed7d6ae | Juan Quintela | qemu_put_s8s(f, v); |
655 | 9ed7d6ae | Juan Quintela | } |
656 | 9ed7d6ae | Juan Quintela | |
657 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int8 = {
|
658 | 9ed7d6ae | Juan Quintela | .name = "int8",
|
659 | 9ed7d6ae | Juan Quintela | .get = get_int8, |
660 | 9ed7d6ae | Juan Quintela | .put = put_int8, |
661 | 9ed7d6ae | Juan Quintela | }; |
662 | 9ed7d6ae | Juan Quintela | |
663 | 9ed7d6ae | Juan Quintela | /* 16 bit int */
|
664 | 9ed7d6ae | Juan Quintela | |
665 | 9ed7d6ae | Juan Quintela | static int get_int16(QEMUFile *f, void *pv, size_t size) |
666 | 9ed7d6ae | Juan Quintela | { |
667 | 9ed7d6ae | Juan Quintela | int16_t *v = pv; |
668 | 9ed7d6ae | Juan Quintela | qemu_get_sbe16s(f, v); |
669 | 9ed7d6ae | Juan Quintela | return 0; |
670 | 9ed7d6ae | Juan Quintela | } |
671 | 9ed7d6ae | Juan Quintela | |
672 | 9ed7d6ae | Juan Quintela | static void put_int16(QEMUFile *f, const void *pv, size_t size) |
673 | 9ed7d6ae | Juan Quintela | { |
674 | 9ed7d6ae | Juan Quintela | const int16_t *v = pv;
|
675 | 9ed7d6ae | Juan Quintela | qemu_put_sbe16s(f, v); |
676 | 9ed7d6ae | Juan Quintela | } |
677 | 9ed7d6ae | Juan Quintela | |
678 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int16 = {
|
679 | 9ed7d6ae | Juan Quintela | .name = "int16",
|
680 | 9ed7d6ae | Juan Quintela | .get = get_int16, |
681 | 9ed7d6ae | Juan Quintela | .put = put_int16, |
682 | 9ed7d6ae | Juan Quintela | }; |
683 | 9ed7d6ae | Juan Quintela | |
684 | 9ed7d6ae | Juan Quintela | /* 32 bit int */
|
685 | 9ed7d6ae | Juan Quintela | |
686 | 9ed7d6ae | Juan Quintela | static int get_int32(QEMUFile *f, void *pv, size_t size) |
687 | 9ed7d6ae | Juan Quintela | { |
688 | 9ed7d6ae | Juan Quintela | int32_t *v = pv; |
689 | 9ed7d6ae | Juan Quintela | qemu_get_sbe32s(f, v); |
690 | 9ed7d6ae | Juan Quintela | return 0; |
691 | 9ed7d6ae | Juan Quintela | } |
692 | 9ed7d6ae | Juan Quintela | |
693 | 9ed7d6ae | Juan Quintela | static void put_int32(QEMUFile *f, const void *pv, size_t size) |
694 | 9ed7d6ae | Juan Quintela | { |
695 | 9ed7d6ae | Juan Quintela | const int32_t *v = pv;
|
696 | 9ed7d6ae | Juan Quintela | qemu_put_sbe32s(f, v); |
697 | 9ed7d6ae | Juan Quintela | } |
698 | 9ed7d6ae | Juan Quintela | |
699 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int32 = {
|
700 | 9ed7d6ae | Juan Quintela | .name = "int32",
|
701 | 9ed7d6ae | Juan Quintela | .get = get_int32, |
702 | 9ed7d6ae | Juan Quintela | .put = put_int32, |
703 | 9ed7d6ae | Juan Quintela | }; |
704 | 9ed7d6ae | Juan Quintela | |
705 | 82501660 | Juan Quintela | /* 32 bit int. See that the received value is the same than the one
|
706 | 82501660 | Juan Quintela | in the field */
|
707 | 82501660 | Juan Quintela | |
708 | 82501660 | Juan Quintela | static int get_int32_equal(QEMUFile *f, void *pv, size_t size) |
709 | 82501660 | Juan Quintela | { |
710 | 82501660 | Juan Quintela | int32_t *v = pv; |
711 | 82501660 | Juan Quintela | int32_t v2; |
712 | 82501660 | Juan Quintela | qemu_get_sbe32s(f, &v2); |
713 | 82501660 | Juan Quintela | |
714 | 82501660 | Juan Quintela | if (*v == v2)
|
715 | 82501660 | Juan Quintela | return 0; |
716 | 82501660 | Juan Quintela | return -EINVAL;
|
717 | 82501660 | Juan Quintela | } |
718 | 82501660 | Juan Quintela | |
719 | 82501660 | Juan Quintela | const VMStateInfo vmstate_info_int32_equal = {
|
720 | 82501660 | Juan Quintela | .name = "int32 equal",
|
721 | 82501660 | Juan Quintela | .get = get_int32_equal, |
722 | 82501660 | Juan Quintela | .put = put_int32, |
723 | 82501660 | Juan Quintela | }; |
724 | 82501660 | Juan Quintela | |
725 | 0a031e0a | Juan Quintela | /* 32 bit int. See that the received value is the less or the same
|
726 | 0a031e0a | Juan Quintela | than the one in the field */
|
727 | 0a031e0a | Juan Quintela | |
728 | 0a031e0a | Juan Quintela | static int get_int32_le(QEMUFile *f, void *pv, size_t size) |
729 | 0a031e0a | Juan Quintela | { |
730 | 0a031e0a | Juan Quintela | int32_t *old = pv; |
731 | 0a031e0a | Juan Quintela | int32_t new; |
732 | 0a031e0a | Juan Quintela | qemu_get_sbe32s(f, &new); |
733 | 0a031e0a | Juan Quintela | |
734 | 0a031e0a | Juan Quintela | if (*old <= new)
|
735 | 0a031e0a | Juan Quintela | return 0; |
736 | 0a031e0a | Juan Quintela | return -EINVAL;
|
737 | 0a031e0a | Juan Quintela | } |
738 | 0a031e0a | Juan Quintela | |
739 | 0a031e0a | Juan Quintela | const VMStateInfo vmstate_info_int32_le = {
|
740 | 0a031e0a | Juan Quintela | .name = "int32 equal",
|
741 | 0a031e0a | Juan Quintela | .get = get_int32_le, |
742 | 0a031e0a | Juan Quintela | .put = put_int32, |
743 | 0a031e0a | Juan Quintela | }; |
744 | 0a031e0a | Juan Quintela | |
745 | 9ed7d6ae | Juan Quintela | /* 64 bit int */
|
746 | 9ed7d6ae | Juan Quintela | |
747 | 9ed7d6ae | Juan Quintela | static int get_int64(QEMUFile *f, void *pv, size_t size) |
748 | 9ed7d6ae | Juan Quintela | { |
749 | 9ed7d6ae | Juan Quintela | int64_t *v = pv; |
750 | 9ed7d6ae | Juan Quintela | qemu_get_sbe64s(f, v); |
751 | 9ed7d6ae | Juan Quintela | return 0; |
752 | 9ed7d6ae | Juan Quintela | } |
753 | 9ed7d6ae | Juan Quintela | |
754 | 9ed7d6ae | Juan Quintela | static void put_int64(QEMUFile *f, const void *pv, size_t size) |
755 | 9ed7d6ae | Juan Quintela | { |
756 | 9ed7d6ae | Juan Quintela | const int64_t *v = pv;
|
757 | 9ed7d6ae | Juan Quintela | qemu_put_sbe64s(f, v); |
758 | 9ed7d6ae | Juan Quintela | } |
759 | 9ed7d6ae | Juan Quintela | |
760 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int64 = {
|
761 | 9ed7d6ae | Juan Quintela | .name = "int64",
|
762 | 9ed7d6ae | Juan Quintela | .get = get_int64, |
763 | 9ed7d6ae | Juan Quintela | .put = put_int64, |
764 | 9ed7d6ae | Juan Quintela | }; |
765 | 9ed7d6ae | Juan Quintela | |
766 | 9ed7d6ae | Juan Quintela | /* 8 bit unsigned int */
|
767 | 9ed7d6ae | Juan Quintela | |
768 | 9ed7d6ae | Juan Quintela | static int get_uint8(QEMUFile *f, void *pv, size_t size) |
769 | 9ed7d6ae | Juan Quintela | { |
770 | 9ed7d6ae | Juan Quintela | uint8_t *v = pv; |
771 | 9ed7d6ae | Juan Quintela | qemu_get_8s(f, v); |
772 | 9ed7d6ae | Juan Quintela | return 0; |
773 | 9ed7d6ae | Juan Quintela | } |
774 | 9ed7d6ae | Juan Quintela | |
775 | 9ed7d6ae | Juan Quintela | static void put_uint8(QEMUFile *f, const void *pv, size_t size) |
776 | 9ed7d6ae | Juan Quintela | { |
777 | 9ed7d6ae | Juan Quintela | const uint8_t *v = pv;
|
778 | 9ed7d6ae | Juan Quintela | qemu_put_8s(f, v); |
779 | 9ed7d6ae | Juan Quintela | } |
780 | 9ed7d6ae | Juan Quintela | |
781 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint8 = {
|
782 | 9ed7d6ae | Juan Quintela | .name = "uint8",
|
783 | 9ed7d6ae | Juan Quintela | .get = get_uint8, |
784 | 9ed7d6ae | Juan Quintela | .put = put_uint8, |
785 | 9ed7d6ae | Juan Quintela | }; |
786 | 9ed7d6ae | Juan Quintela | |
787 | 9ed7d6ae | Juan Quintela | /* 16 bit unsigned int */
|
788 | 9ed7d6ae | Juan Quintela | |
789 | 9ed7d6ae | Juan Quintela | static int get_uint16(QEMUFile *f, void *pv, size_t size) |
790 | 9ed7d6ae | Juan Quintela | { |
791 | 9ed7d6ae | Juan Quintela | uint16_t *v = pv; |
792 | 9ed7d6ae | Juan Quintela | qemu_get_be16s(f, v); |
793 | 9ed7d6ae | Juan Quintela | return 0; |
794 | 9ed7d6ae | Juan Quintela | } |
795 | 9ed7d6ae | Juan Quintela | |
796 | 9ed7d6ae | Juan Quintela | static void put_uint16(QEMUFile *f, const void *pv, size_t size) |
797 | 9ed7d6ae | Juan Quintela | { |
798 | 9ed7d6ae | Juan Quintela | const uint16_t *v = pv;
|
799 | 9ed7d6ae | Juan Quintela | qemu_put_be16s(f, v); |
800 | 9ed7d6ae | Juan Quintela | } |
801 | 9ed7d6ae | Juan Quintela | |
802 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint16 = {
|
803 | 9ed7d6ae | Juan Quintela | .name = "uint16",
|
804 | 9ed7d6ae | Juan Quintela | .get = get_uint16, |
805 | 9ed7d6ae | Juan Quintela | .put = put_uint16, |
806 | 9ed7d6ae | Juan Quintela | }; |
807 | 9ed7d6ae | Juan Quintela | |
808 | 9ed7d6ae | Juan Quintela | /* 32 bit unsigned int */
|
809 | 9ed7d6ae | Juan Quintela | |
810 | 9ed7d6ae | Juan Quintela | static int get_uint32(QEMUFile *f, void *pv, size_t size) |
811 | 9ed7d6ae | Juan Quintela | { |
812 | 9ed7d6ae | Juan Quintela | uint32_t *v = pv; |
813 | 9ed7d6ae | Juan Quintela | qemu_get_be32s(f, v); |
814 | 9ed7d6ae | Juan Quintela | return 0; |
815 | 9ed7d6ae | Juan Quintela | } |
816 | 9ed7d6ae | Juan Quintela | |
817 | 9ed7d6ae | Juan Quintela | static void put_uint32(QEMUFile *f, const void *pv, size_t size) |
818 | 9ed7d6ae | Juan Quintela | { |
819 | 9ed7d6ae | Juan Quintela | const uint32_t *v = pv;
|
820 | 9ed7d6ae | Juan Quintela | qemu_put_be32s(f, v); |
821 | 9ed7d6ae | Juan Quintela | } |
822 | 9ed7d6ae | Juan Quintela | |
823 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint32 = {
|
824 | 9ed7d6ae | Juan Quintela | .name = "uint32",
|
825 | 9ed7d6ae | Juan Quintela | .get = get_uint32, |
826 | 9ed7d6ae | Juan Quintela | .put = put_uint32, |
827 | 9ed7d6ae | Juan Quintela | }; |
828 | 9ed7d6ae | Juan Quintela | |
829 | 9ed7d6ae | Juan Quintela | /* 64 bit unsigned int */
|
830 | 9ed7d6ae | Juan Quintela | |
831 | 9ed7d6ae | Juan Quintela | static int get_uint64(QEMUFile *f, void *pv, size_t size) |
832 | 9ed7d6ae | Juan Quintela | { |
833 | 9ed7d6ae | Juan Quintela | uint64_t *v = pv; |
834 | 9ed7d6ae | Juan Quintela | qemu_get_be64s(f, v); |
835 | 9ed7d6ae | Juan Quintela | return 0; |
836 | 9ed7d6ae | Juan Quintela | } |
837 | 9ed7d6ae | Juan Quintela | |
838 | 9ed7d6ae | Juan Quintela | static void put_uint64(QEMUFile *f, const void *pv, size_t size) |
839 | 9ed7d6ae | Juan Quintela | { |
840 | 9ed7d6ae | Juan Quintela | const uint64_t *v = pv;
|
841 | 9ed7d6ae | Juan Quintela | qemu_put_be64s(f, v); |
842 | 9ed7d6ae | Juan Quintela | } |
843 | 9ed7d6ae | Juan Quintela | |
844 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint64 = {
|
845 | 9ed7d6ae | Juan Quintela | .name = "uint64",
|
846 | 9ed7d6ae | Juan Quintela | .get = get_uint64, |
847 | 9ed7d6ae | Juan Quintela | .put = put_uint64, |
848 | 9ed7d6ae | Juan Quintela | }; |
849 | 9ed7d6ae | Juan Quintela | |
850 | dde0463b | Juan Quintela | /* timers */
|
851 | dde0463b | Juan Quintela | |
852 | dde0463b | Juan Quintela | static int get_timer(QEMUFile *f, void *pv, size_t size) |
853 | dde0463b | Juan Quintela | { |
854 | dde0463b | Juan Quintela | QEMUTimer *v = pv; |
855 | dde0463b | Juan Quintela | qemu_get_timer(f, v); |
856 | dde0463b | Juan Quintela | return 0; |
857 | dde0463b | Juan Quintela | } |
858 | dde0463b | Juan Quintela | |
859 | dde0463b | Juan Quintela | static void put_timer(QEMUFile *f, const void *pv, size_t size) |
860 | dde0463b | Juan Quintela | { |
861 | dde0463b | Juan Quintela | QEMUTimer *v = (void *)pv;
|
862 | dde0463b | Juan Quintela | qemu_put_timer(f, v); |
863 | dde0463b | Juan Quintela | } |
864 | dde0463b | Juan Quintela | |
865 | dde0463b | Juan Quintela | const VMStateInfo vmstate_info_timer = {
|
866 | dde0463b | Juan Quintela | .name = "timer",
|
867 | dde0463b | Juan Quintela | .get = get_timer, |
868 | dde0463b | Juan Quintela | .put = put_timer, |
869 | dde0463b | Juan Quintela | }; |
870 | dde0463b | Juan Quintela | |
871 | 6f67c50f | Juan Quintela | /* uint8_t buffers */
|
872 | 6f67c50f | Juan Quintela | |
873 | 6f67c50f | Juan Quintela | static int get_buffer(QEMUFile *f, void *pv, size_t size) |
874 | 6f67c50f | Juan Quintela | { |
875 | 6f67c50f | Juan Quintela | uint8_t *v = pv; |
876 | 6f67c50f | Juan Quintela | qemu_get_buffer(f, v, size); |
877 | 6f67c50f | Juan Quintela | return 0; |
878 | 6f67c50f | Juan Quintela | } |
879 | 6f67c50f | Juan Quintela | |
880 | 6f67c50f | Juan Quintela | static void put_buffer(QEMUFile *f, const void *pv, size_t size) |
881 | 6f67c50f | Juan Quintela | { |
882 | 6f67c50f | Juan Quintela | uint8_t *v = (void *)pv;
|
883 | 6f67c50f | Juan Quintela | qemu_put_buffer(f, v, size); |
884 | 6f67c50f | Juan Quintela | } |
885 | 6f67c50f | Juan Quintela | |
886 | 6f67c50f | Juan Quintela | const VMStateInfo vmstate_info_buffer = {
|
887 | 6f67c50f | Juan Quintela | .name = "buffer",
|
888 | 6f67c50f | Juan Quintela | .get = get_buffer, |
889 | 6f67c50f | Juan Quintela | .put = put_buffer, |
890 | 6f67c50f | Juan Quintela | }; |
891 | 6f67c50f | Juan Quintela | |
892 | a672b469 | aliguori | typedef struct SaveStateEntry { |
893 | a672b469 | aliguori | char idstr[256]; |
894 | a672b469 | aliguori | int instance_id;
|
895 | a672b469 | aliguori | int version_id;
|
896 | a672b469 | aliguori | int section_id;
|
897 | a672b469 | aliguori | SaveLiveStateHandler *save_live_state; |
898 | a672b469 | aliguori | SaveStateHandler *save_state; |
899 | a672b469 | aliguori | LoadStateHandler *load_state; |
900 | 9ed7d6ae | Juan Quintela | const VMStateDescription *vmsd;
|
901 | a672b469 | aliguori | void *opaque;
|
902 | a672b469 | aliguori | struct SaveStateEntry *next;
|
903 | a672b469 | aliguori | } SaveStateEntry; |
904 | a672b469 | aliguori | |
905 | a672b469 | aliguori | static SaveStateEntry *first_se;
|
906 | 9ed7d6ae | Juan Quintela | static int global_section_id; |
907 | a672b469 | aliguori | |
908 | a672b469 | aliguori | /* TODO: Individual devices generally have very little idea about the rest
|
909 | a672b469 | aliguori | of the system, so instance_id should be removed/replaced.
|
910 | a672b469 | aliguori | Meanwhile pass -1 as instance_id if you do not already have a clearly
|
911 | a672b469 | aliguori | distinguishing id for all instances of your device class. */
|
912 | a672b469 | aliguori | int register_savevm_live(const char *idstr, |
913 | a672b469 | aliguori | int instance_id,
|
914 | a672b469 | aliguori | int version_id,
|
915 | a672b469 | aliguori | SaveLiveStateHandler *save_live_state, |
916 | a672b469 | aliguori | SaveStateHandler *save_state, |
917 | a672b469 | aliguori | LoadStateHandler *load_state, |
918 | a672b469 | aliguori | void *opaque)
|
919 | a672b469 | aliguori | { |
920 | a672b469 | aliguori | SaveStateEntry *se, **pse; |
921 | a672b469 | aliguori | |
922 | a672b469 | aliguori | se = qemu_malloc(sizeof(SaveStateEntry));
|
923 | a672b469 | aliguori | pstrcpy(se->idstr, sizeof(se->idstr), idstr);
|
924 | a672b469 | aliguori | se->instance_id = (instance_id == -1) ? 0 : instance_id; |
925 | a672b469 | aliguori | se->version_id = version_id; |
926 | a672b469 | aliguori | se->section_id = global_section_id++; |
927 | a672b469 | aliguori | se->save_live_state = save_live_state; |
928 | a672b469 | aliguori | se->save_state = save_state; |
929 | a672b469 | aliguori | se->load_state = load_state; |
930 | a672b469 | aliguori | se->opaque = opaque; |
931 | 9ed7d6ae | Juan Quintela | se->vmsd = NULL;
|
932 | a672b469 | aliguori | se->next = NULL;
|
933 | a672b469 | aliguori | |
934 | a672b469 | aliguori | /* add at the end of list */
|
935 | a672b469 | aliguori | pse = &first_se; |
936 | a672b469 | aliguori | while (*pse != NULL) { |
937 | a672b469 | aliguori | if (instance_id == -1 |
938 | a672b469 | aliguori | && strcmp(se->idstr, (*pse)->idstr) == 0
|
939 | a672b469 | aliguori | && se->instance_id <= (*pse)->instance_id) |
940 | a672b469 | aliguori | se->instance_id = (*pse)->instance_id + 1;
|
941 | a672b469 | aliguori | pse = &(*pse)->next; |
942 | a672b469 | aliguori | } |
943 | a672b469 | aliguori | *pse = se; |
944 | a672b469 | aliguori | return 0; |
945 | a672b469 | aliguori | } |
946 | a672b469 | aliguori | |
947 | a672b469 | aliguori | int register_savevm(const char *idstr, |
948 | a672b469 | aliguori | int instance_id,
|
949 | a672b469 | aliguori | int version_id,
|
950 | a672b469 | aliguori | SaveStateHandler *save_state, |
951 | a672b469 | aliguori | LoadStateHandler *load_state, |
952 | a672b469 | aliguori | void *opaque)
|
953 | a672b469 | aliguori | { |
954 | a672b469 | aliguori | return register_savevm_live(idstr, instance_id, version_id,
|
955 | a672b469 | aliguori | NULL, save_state, load_state, opaque);
|
956 | a672b469 | aliguori | } |
957 | a672b469 | aliguori | |
958 | 41bd13af | aliguori | void unregister_savevm(const char *idstr, void *opaque) |
959 | 41bd13af | aliguori | { |
960 | 41bd13af | aliguori | SaveStateEntry **pse; |
961 | 41bd13af | aliguori | |
962 | 41bd13af | aliguori | pse = &first_se; |
963 | 41bd13af | aliguori | while (*pse != NULL) { |
964 | 41bd13af | aliguori | if (strcmp((*pse)->idstr, idstr) == 0 && (*pse)->opaque == opaque) { |
965 | 41bd13af | aliguori | SaveStateEntry *next = (*pse)->next; |
966 | 41bd13af | aliguori | qemu_free(*pse); |
967 | 41bd13af | aliguori | *pse = next; |
968 | 41bd13af | aliguori | continue;
|
969 | 41bd13af | aliguori | } |
970 | 41bd13af | aliguori | pse = &(*pse)->next; |
971 | 41bd13af | aliguori | } |
972 | 41bd13af | aliguori | } |
973 | 41bd13af | aliguori | |
974 | 9ed7d6ae | Juan Quintela | int vmstate_register(int instance_id, const VMStateDescription *vmsd, |
975 | 9ed7d6ae | Juan Quintela | void *opaque)
|
976 | 9ed7d6ae | Juan Quintela | { |
977 | 9ed7d6ae | Juan Quintela | SaveStateEntry *se, **pse; |
978 | 9ed7d6ae | Juan Quintela | |
979 | 9ed7d6ae | Juan Quintela | se = qemu_malloc(sizeof(SaveStateEntry));
|
980 | 9ed7d6ae | Juan Quintela | pstrcpy(se->idstr, sizeof(se->idstr), vmsd->name);
|
981 | 9ed7d6ae | Juan Quintela | se->instance_id = (instance_id == -1) ? 0 : instance_id; |
982 | 9ed7d6ae | Juan Quintela | se->version_id = vmsd->version_id; |
983 | 9ed7d6ae | Juan Quintela | se->section_id = global_section_id++; |
984 | 9ed7d6ae | Juan Quintela | se->save_live_state = NULL;
|
985 | 9ed7d6ae | Juan Quintela | se->save_state = NULL;
|
986 | 9ed7d6ae | Juan Quintela | se->load_state = NULL;
|
987 | 9ed7d6ae | Juan Quintela | se->opaque = opaque; |
988 | 9ed7d6ae | Juan Quintela | se->vmsd = vmsd; |
989 | 9ed7d6ae | Juan Quintela | se->next = NULL;
|
990 | 9ed7d6ae | Juan Quintela | |
991 | 9ed7d6ae | Juan Quintela | /* add at the end of list */
|
992 | 9ed7d6ae | Juan Quintela | pse = &first_se; |
993 | 9ed7d6ae | Juan Quintela | while (*pse != NULL) { |
994 | 9ed7d6ae | Juan Quintela | if (instance_id == -1 |
995 | 9ed7d6ae | Juan Quintela | && strcmp(se->idstr, (*pse)->idstr) == 0
|
996 | 9ed7d6ae | Juan Quintela | && se->instance_id <= (*pse)->instance_id) |
997 | 9ed7d6ae | Juan Quintela | se->instance_id = (*pse)->instance_id + 1;
|
998 | 9ed7d6ae | Juan Quintela | pse = &(*pse)->next; |
999 | 9ed7d6ae | Juan Quintela | } |
1000 | 9ed7d6ae | Juan Quintela | *pse = se; |
1001 | 9ed7d6ae | Juan Quintela | return 0; |
1002 | 9ed7d6ae | Juan Quintela | } |
1003 | 9ed7d6ae | Juan Quintela | |
1004 | 9ed7d6ae | Juan Quintela | void vmstate_unregister(const char *idstr, void *opaque) |
1005 | 9ed7d6ae | Juan Quintela | { |
1006 | 9ed7d6ae | Juan Quintela | SaveStateEntry **pse; |
1007 | 9ed7d6ae | Juan Quintela | |
1008 | 9ed7d6ae | Juan Quintela | pse = &first_se; |
1009 | 9ed7d6ae | Juan Quintela | while (*pse != NULL) { |
1010 | 9ed7d6ae | Juan Quintela | if (strcmp((*pse)->idstr, idstr) == 0 && (*pse)->opaque == opaque) { |
1011 | 9ed7d6ae | Juan Quintela | SaveStateEntry *next = (*pse)->next; |
1012 | 9ed7d6ae | Juan Quintela | qemu_free(*pse); |
1013 | 9ed7d6ae | Juan Quintela | *pse = next; |
1014 | 9ed7d6ae | Juan Quintela | continue;
|
1015 | 9ed7d6ae | Juan Quintela | } |
1016 | 9ed7d6ae | Juan Quintela | pse = &(*pse)->next; |
1017 | 9ed7d6ae | Juan Quintela | } |
1018 | 9ed7d6ae | Juan Quintela | } |
1019 | 9ed7d6ae | Juan Quintela | |
1020 | 9ed7d6ae | Juan Quintela | int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd, |
1021 | 9ed7d6ae | Juan Quintela | void *opaque, int version_id) |
1022 | 9ed7d6ae | Juan Quintela | { |
1023 | 9ed7d6ae | Juan Quintela | VMStateField *field = vmsd->fields; |
1024 | 9ed7d6ae | Juan Quintela | |
1025 | 9ed7d6ae | Juan Quintela | if (version_id > vmsd->version_id) {
|
1026 | 9ed7d6ae | Juan Quintela | return -EINVAL;
|
1027 | 9ed7d6ae | Juan Quintela | } |
1028 | 9ed7d6ae | Juan Quintela | if (version_id < vmsd->minimum_version_id_old) {
|
1029 | 9ed7d6ae | Juan Quintela | return -EINVAL;
|
1030 | 9ed7d6ae | Juan Quintela | } |
1031 | 9ed7d6ae | Juan Quintela | if (version_id < vmsd->minimum_version_id) {
|
1032 | 9ed7d6ae | Juan Quintela | return vmsd->load_state_old(f, opaque, version_id);
|
1033 | 9ed7d6ae | Juan Quintela | } |
1034 | 9ed7d6ae | Juan Quintela | while(field->name) {
|
1035 | 9ed7d6ae | Juan Quintela | if (field->version_id <= version_id) {
|
1036 | f752a6aa | Juan Quintela | void *base_addr = opaque + field->offset;
|
1037 | f752a6aa | Juan Quintela | int ret, i, n_elems = 1; |
1038 | 9ed7d6ae | Juan Quintela | |
1039 | f752a6aa | Juan Quintela | if (field->flags & VMS_ARRAY) {
|
1040 | f752a6aa | Juan Quintela | n_elems = field->num; |
1041 | b00319a9 | Juan Quintela | } else if (field->flags & VMS_VARRAY) { |
1042 | b00319a9 | Juan Quintela | n_elems = *(size_t *)(opaque+field->num_offset); |
1043 | f752a6aa | Juan Quintela | } |
1044 | dde0463b | Juan Quintela | if (field->flags & VMS_POINTER) {
|
1045 | f752a6aa | Juan Quintela | base_addr = *(void **)base_addr;
|
1046 | dde0463b | Juan Quintela | } |
1047 | f752a6aa | Juan Quintela | for (i = 0; i < n_elems; i++) { |
1048 | f752a6aa | Juan Quintela | void *addr = base_addr + field->size * i;
|
1049 | ec245e21 | Juan Quintela | |
1050 | ec245e21 | Juan Quintela | if (field->flags & VMS_STRUCT) {
|
1051 | ec245e21 | Juan Quintela | ret = vmstate_load_state(f, field->vmsd, addr, version_id); |
1052 | ec245e21 | Juan Quintela | } else {
|
1053 | ec245e21 | Juan Quintela | ret = field->info->get(f, addr, field->size); |
1054 | ec245e21 | Juan Quintela | |
1055 | ec245e21 | Juan Quintela | } |
1056 | f752a6aa | Juan Quintela | if (ret < 0) { |
1057 | f752a6aa | Juan Quintela | return ret;
|
1058 | f752a6aa | Juan Quintela | } |
1059 | 9ed7d6ae | Juan Quintela | } |
1060 | 9ed7d6ae | Juan Quintela | } |
1061 | 9ed7d6ae | Juan Quintela | field++; |
1062 | 9ed7d6ae | Juan Quintela | } |
1063 | cff09e92 | Juan Quintela | if (vmsd->run_after_load)
|
1064 | cff09e92 | Juan Quintela | return vmsd->run_after_load(opaque);
|
1065 | 9ed7d6ae | Juan Quintela | return 0; |
1066 | 9ed7d6ae | Juan Quintela | } |
1067 | 9ed7d6ae | Juan Quintela | |
1068 | 9ed7d6ae | Juan Quintela | void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd, |
1069 | 9ed7d6ae | Juan Quintela | const void *opaque) |
1070 | 9ed7d6ae | Juan Quintela | { |
1071 | 9ed7d6ae | Juan Quintela | VMStateField *field = vmsd->fields; |
1072 | 9ed7d6ae | Juan Quintela | |
1073 | 9ed7d6ae | Juan Quintela | while(field->name) {
|
1074 | f752a6aa | Juan Quintela | const void *base_addr = opaque + field->offset; |
1075 | f752a6aa | Juan Quintela | int i, n_elems = 1; |
1076 | dde0463b | Juan Quintela | |
1077 | f752a6aa | Juan Quintela | if (field->flags & VMS_ARRAY) {
|
1078 | f752a6aa | Juan Quintela | n_elems = field->num; |
1079 | b00319a9 | Juan Quintela | } else if (field->flags & VMS_VARRAY) { |
1080 | b00319a9 | Juan Quintela | n_elems = *(size_t *)(opaque+field->num_offset); |
1081 | f752a6aa | Juan Quintela | } |
1082 | dde0463b | Juan Quintela | if (field->flags & VMS_POINTER) {
|
1083 | f752a6aa | Juan Quintela | base_addr = *(void **)base_addr;
|
1084 | f752a6aa | Juan Quintela | } |
1085 | f752a6aa | Juan Quintela | for (i = 0; i < n_elems; i++) { |
1086 | f752a6aa | Juan Quintela | const void *addr = base_addr + field->size * i; |
1087 | ec245e21 | Juan Quintela | |
1088 | ec245e21 | Juan Quintela | if (field->flags & VMS_STRUCT) {
|
1089 | ec245e21 | Juan Quintela | vmstate_save_state(f, field->vmsd, addr); |
1090 | ec245e21 | Juan Quintela | } else {
|
1091 | ec245e21 | Juan Quintela | field->info->put(f, addr, field->size); |
1092 | ec245e21 | Juan Quintela | } |
1093 | dde0463b | Juan Quintela | } |
1094 | 9ed7d6ae | Juan Quintela | field++; |
1095 | 9ed7d6ae | Juan Quintela | } |
1096 | 9ed7d6ae | Juan Quintela | } |
1097 | 9ed7d6ae | Juan Quintela | |
1098 | 4082be4d | Juan Quintela | static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id) |
1099 | 4082be4d | Juan Quintela | { |
1100 | 9ed7d6ae | Juan Quintela | if (!se->vmsd) { /* Old style */ |
1101 | 9ed7d6ae | Juan Quintela | return se->load_state(f, se->opaque, version_id);
|
1102 | 9ed7d6ae | Juan Quintela | } |
1103 | 9ed7d6ae | Juan Quintela | return vmstate_load_state(f, se->vmsd, se->opaque, version_id);
|
1104 | 4082be4d | Juan Quintela | } |
1105 | 4082be4d | Juan Quintela | |
1106 | 4082be4d | Juan Quintela | static void vmstate_save(QEMUFile *f, SaveStateEntry *se) |
1107 | 4082be4d | Juan Quintela | { |
1108 | 9ed7d6ae | Juan Quintela | if (!se->vmsd) { /* Old style */ |
1109 | 9ed7d6ae | Juan Quintela | se->save_state(f, se->opaque); |
1110 | 9ed7d6ae | Juan Quintela | return;
|
1111 | 9ed7d6ae | Juan Quintela | } |
1112 | 9ed7d6ae | Juan Quintela | vmstate_save_state(f,se->vmsd, se->opaque); |
1113 | 4082be4d | Juan Quintela | } |
1114 | 4082be4d | Juan Quintela | |
1115 | a672b469 | aliguori | #define QEMU_VM_FILE_MAGIC 0x5145564d |
1116 | a672b469 | aliguori | #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 |
1117 | a672b469 | aliguori | #define QEMU_VM_FILE_VERSION 0x00000003 |
1118 | a672b469 | aliguori | |
1119 | a672b469 | aliguori | #define QEMU_VM_EOF 0x00 |
1120 | a672b469 | aliguori | #define QEMU_VM_SECTION_START 0x01 |
1121 | a672b469 | aliguori | #define QEMU_VM_SECTION_PART 0x02 |
1122 | a672b469 | aliguori | #define QEMU_VM_SECTION_END 0x03 |
1123 | a672b469 | aliguori | #define QEMU_VM_SECTION_FULL 0x04 |
1124 | a672b469 | aliguori | |
1125 | a672b469 | aliguori | int qemu_savevm_state_begin(QEMUFile *f)
|
1126 | a672b469 | aliguori | { |
1127 | a672b469 | aliguori | SaveStateEntry *se; |
1128 | a672b469 | aliguori | |
1129 | a672b469 | aliguori | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); |
1130 | a672b469 | aliguori | qemu_put_be32(f, QEMU_VM_FILE_VERSION); |
1131 | a672b469 | aliguori | |
1132 | a672b469 | aliguori | for (se = first_se; se != NULL; se = se->next) { |
1133 | a672b469 | aliguori | int len;
|
1134 | a672b469 | aliguori | |
1135 | a672b469 | aliguori | if (se->save_live_state == NULL) |
1136 | a672b469 | aliguori | continue;
|
1137 | a672b469 | aliguori | |
1138 | a672b469 | aliguori | /* Section type */
|
1139 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_START); |
1140 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1141 | a672b469 | aliguori | |
1142 | a672b469 | aliguori | /* ID string */
|
1143 | a672b469 | aliguori | len = strlen(se->idstr); |
1144 | a672b469 | aliguori | qemu_put_byte(f, len); |
1145 | a672b469 | aliguori | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
1146 | a672b469 | aliguori | |
1147 | a672b469 | aliguori | qemu_put_be32(f, se->instance_id); |
1148 | a672b469 | aliguori | qemu_put_be32(f, se->version_id); |
1149 | a672b469 | aliguori | |
1150 | a672b469 | aliguori | se->save_live_state(f, QEMU_VM_SECTION_START, se->opaque); |
1151 | a672b469 | aliguori | } |
1152 | a672b469 | aliguori | |
1153 | a672b469 | aliguori | if (qemu_file_has_error(f))
|
1154 | a672b469 | aliguori | return -EIO;
|
1155 | a672b469 | aliguori | |
1156 | a672b469 | aliguori | return 0; |
1157 | a672b469 | aliguori | } |
1158 | a672b469 | aliguori | |
1159 | a672b469 | aliguori | int qemu_savevm_state_iterate(QEMUFile *f)
|
1160 | a672b469 | aliguori | { |
1161 | a672b469 | aliguori | SaveStateEntry *se; |
1162 | a672b469 | aliguori | int ret = 1; |
1163 | a672b469 | aliguori | |
1164 | a672b469 | aliguori | for (se = first_se; se != NULL; se = se->next) { |
1165 | a672b469 | aliguori | if (se->save_live_state == NULL) |
1166 | a672b469 | aliguori | continue;
|
1167 | a672b469 | aliguori | |
1168 | a672b469 | aliguori | /* Section type */
|
1169 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_PART); |
1170 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1171 | a672b469 | aliguori | |
1172 | a672b469 | aliguori | ret &= !!se->save_live_state(f, QEMU_VM_SECTION_PART, se->opaque); |
1173 | a672b469 | aliguori | } |
1174 | a672b469 | aliguori | |
1175 | a672b469 | aliguori | if (ret)
|
1176 | a672b469 | aliguori | return 1; |
1177 | a672b469 | aliguori | |
1178 | a672b469 | aliguori | if (qemu_file_has_error(f))
|
1179 | a672b469 | aliguori | return -EIO;
|
1180 | a672b469 | aliguori | |
1181 | a672b469 | aliguori | return 0; |
1182 | a672b469 | aliguori | } |
1183 | a672b469 | aliguori | |
1184 | a672b469 | aliguori | int qemu_savevm_state_complete(QEMUFile *f)
|
1185 | a672b469 | aliguori | { |
1186 | a672b469 | aliguori | SaveStateEntry *se; |
1187 | a672b469 | aliguori | |
1188 | a672b469 | aliguori | for (se = first_se; se != NULL; se = se->next) { |
1189 | a672b469 | aliguori | if (se->save_live_state == NULL) |
1190 | a672b469 | aliguori | continue;
|
1191 | a672b469 | aliguori | |
1192 | a672b469 | aliguori | /* Section type */
|
1193 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_END); |
1194 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1195 | a672b469 | aliguori | |
1196 | a672b469 | aliguori | se->save_live_state(f, QEMU_VM_SECTION_END, se->opaque); |
1197 | a672b469 | aliguori | } |
1198 | a672b469 | aliguori | |
1199 | a672b469 | aliguori | for(se = first_se; se != NULL; se = se->next) { |
1200 | a672b469 | aliguori | int len;
|
1201 | a672b469 | aliguori | |
1202 | 9ed7d6ae | Juan Quintela | if (se->save_state == NULL && se->vmsd == NULL) |
1203 | a672b469 | aliguori | continue;
|
1204 | a672b469 | aliguori | |
1205 | a672b469 | aliguori | /* Section type */
|
1206 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_FULL); |
1207 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1208 | a672b469 | aliguori | |
1209 | a672b469 | aliguori | /* ID string */
|
1210 | a672b469 | aliguori | len = strlen(se->idstr); |
1211 | a672b469 | aliguori | qemu_put_byte(f, len); |
1212 | a672b469 | aliguori | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
1213 | a672b469 | aliguori | |
1214 | a672b469 | aliguori | qemu_put_be32(f, se->instance_id); |
1215 | a672b469 | aliguori | qemu_put_be32(f, se->version_id); |
1216 | a672b469 | aliguori | |
1217 | 4082be4d | Juan Quintela | vmstate_save(f, se); |
1218 | a672b469 | aliguori | } |
1219 | a672b469 | aliguori | |
1220 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_EOF); |
1221 | a672b469 | aliguori | |
1222 | a672b469 | aliguori | if (qemu_file_has_error(f))
|
1223 | a672b469 | aliguori | return -EIO;
|
1224 | a672b469 | aliguori | |
1225 | a672b469 | aliguori | return 0; |
1226 | a672b469 | aliguori | } |
1227 | a672b469 | aliguori | |
1228 | a672b469 | aliguori | int qemu_savevm_state(QEMUFile *f)
|
1229 | a672b469 | aliguori | { |
1230 | a672b469 | aliguori | int saved_vm_running;
|
1231 | a672b469 | aliguori | int ret;
|
1232 | a672b469 | aliguori | |
1233 | a672b469 | aliguori | saved_vm_running = vm_running; |
1234 | a672b469 | aliguori | vm_stop(0);
|
1235 | a672b469 | aliguori | |
1236 | a672b469 | aliguori | bdrv_flush_all(); |
1237 | a672b469 | aliguori | |
1238 | a672b469 | aliguori | ret = qemu_savevm_state_begin(f); |
1239 | a672b469 | aliguori | if (ret < 0) |
1240 | a672b469 | aliguori | goto out;
|
1241 | a672b469 | aliguori | |
1242 | a672b469 | aliguori | do {
|
1243 | a672b469 | aliguori | ret = qemu_savevm_state_iterate(f); |
1244 | a672b469 | aliguori | if (ret < 0) |
1245 | a672b469 | aliguori | goto out;
|
1246 | a672b469 | aliguori | } while (ret == 0); |
1247 | a672b469 | aliguori | |
1248 | a672b469 | aliguori | ret = qemu_savevm_state_complete(f); |
1249 | a672b469 | aliguori | |
1250 | a672b469 | aliguori | out:
|
1251 | a672b469 | aliguori | if (qemu_file_has_error(f))
|
1252 | a672b469 | aliguori | ret = -EIO; |
1253 | a672b469 | aliguori | |
1254 | a672b469 | aliguori | if (!ret && saved_vm_running)
|
1255 | a672b469 | aliguori | vm_start(); |
1256 | a672b469 | aliguori | |
1257 | a672b469 | aliguori | return ret;
|
1258 | a672b469 | aliguori | } |
1259 | a672b469 | aliguori | |
1260 | a672b469 | aliguori | static SaveStateEntry *find_se(const char *idstr, int instance_id) |
1261 | a672b469 | aliguori | { |
1262 | a672b469 | aliguori | SaveStateEntry *se; |
1263 | a672b469 | aliguori | |
1264 | a672b469 | aliguori | for(se = first_se; se != NULL; se = se->next) { |
1265 | a672b469 | aliguori | if (!strcmp(se->idstr, idstr) &&
|
1266 | a672b469 | aliguori | instance_id == se->instance_id) |
1267 | a672b469 | aliguori | return se;
|
1268 | a672b469 | aliguori | } |
1269 | a672b469 | aliguori | return NULL; |
1270 | a672b469 | aliguori | } |
1271 | a672b469 | aliguori | |
1272 | a672b469 | aliguori | typedef struct LoadStateEntry { |
1273 | a672b469 | aliguori | SaveStateEntry *se; |
1274 | a672b469 | aliguori | int section_id;
|
1275 | a672b469 | aliguori | int version_id;
|
1276 | a672b469 | aliguori | struct LoadStateEntry *next;
|
1277 | a672b469 | aliguori | } LoadStateEntry; |
1278 | a672b469 | aliguori | |
1279 | a672b469 | aliguori | static int qemu_loadvm_state_v2(QEMUFile *f) |
1280 | a672b469 | aliguori | { |
1281 | a672b469 | aliguori | SaveStateEntry *se; |
1282 | a672b469 | aliguori | int len, ret, instance_id, record_len, version_id;
|
1283 | a672b469 | aliguori | int64_t total_len, end_pos, cur_pos; |
1284 | a672b469 | aliguori | char idstr[256]; |
1285 | a672b469 | aliguori | |
1286 | a672b469 | aliguori | total_len = qemu_get_be64(f); |
1287 | a672b469 | aliguori | end_pos = total_len + qemu_ftell(f); |
1288 | a672b469 | aliguori | for(;;) {
|
1289 | a672b469 | aliguori | if (qemu_ftell(f) >= end_pos)
|
1290 | a672b469 | aliguori | break;
|
1291 | a672b469 | aliguori | len = qemu_get_byte(f); |
1292 | a672b469 | aliguori | qemu_get_buffer(f, (uint8_t *)idstr, len); |
1293 | a672b469 | aliguori | idstr[len] = '\0';
|
1294 | a672b469 | aliguori | instance_id = qemu_get_be32(f); |
1295 | a672b469 | aliguori | version_id = qemu_get_be32(f); |
1296 | a672b469 | aliguori | record_len = qemu_get_be32(f); |
1297 | a672b469 | aliguori | cur_pos = qemu_ftell(f); |
1298 | a672b469 | aliguori | se = find_se(idstr, instance_id); |
1299 | a672b469 | aliguori | if (!se) {
|
1300 | a672b469 | aliguori | fprintf(stderr, "qemu: warning: instance 0x%x of device '%s' not present in current VM\n",
|
1301 | a672b469 | aliguori | instance_id, idstr); |
1302 | a672b469 | aliguori | } else {
|
1303 | 4082be4d | Juan Quintela | ret = vmstate_load(f, se, version_id); |
1304 | a672b469 | aliguori | if (ret < 0) { |
1305 | a672b469 | aliguori | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n",
|
1306 | a672b469 | aliguori | instance_id, idstr); |
1307 | d02f7094 | Anthony Liguori | return ret;
|
1308 | a672b469 | aliguori | } |
1309 | a672b469 | aliguori | } |
1310 | a672b469 | aliguori | /* always seek to exact end of record */
|
1311 | a672b469 | aliguori | qemu_fseek(f, cur_pos + record_len, SEEK_SET); |
1312 | a672b469 | aliguori | } |
1313 | a672b469 | aliguori | |
1314 | a672b469 | aliguori | if (qemu_file_has_error(f))
|
1315 | a672b469 | aliguori | return -EIO;
|
1316 | a672b469 | aliguori | |
1317 | a672b469 | aliguori | return 0; |
1318 | a672b469 | aliguori | } |
1319 | a672b469 | aliguori | |
1320 | a672b469 | aliguori | int qemu_loadvm_state(QEMUFile *f)
|
1321 | a672b469 | aliguori | { |
1322 | a672b469 | aliguori | LoadStateEntry *first_le = NULL;
|
1323 | a672b469 | aliguori | uint8_t section_type; |
1324 | a672b469 | aliguori | unsigned int v; |
1325 | a672b469 | aliguori | int ret;
|
1326 | a672b469 | aliguori | |
1327 | a672b469 | aliguori | v = qemu_get_be32(f); |
1328 | a672b469 | aliguori | if (v != QEMU_VM_FILE_MAGIC)
|
1329 | a672b469 | aliguori | return -EINVAL;
|
1330 | a672b469 | aliguori | |
1331 | a672b469 | aliguori | v = qemu_get_be32(f); |
1332 | a672b469 | aliguori | if (v == QEMU_VM_FILE_VERSION_COMPAT)
|
1333 | a672b469 | aliguori | return qemu_loadvm_state_v2(f);
|
1334 | a672b469 | aliguori | if (v != QEMU_VM_FILE_VERSION)
|
1335 | a672b469 | aliguori | return -ENOTSUP;
|
1336 | a672b469 | aliguori | |
1337 | a672b469 | aliguori | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) {
|
1338 | a672b469 | aliguori | uint32_t instance_id, version_id, section_id; |
1339 | a672b469 | aliguori | LoadStateEntry *le; |
1340 | a672b469 | aliguori | SaveStateEntry *se; |
1341 | a672b469 | aliguori | char idstr[257]; |
1342 | a672b469 | aliguori | int len;
|
1343 | a672b469 | aliguori | |
1344 | a672b469 | aliguori | switch (section_type) {
|
1345 | a672b469 | aliguori | case QEMU_VM_SECTION_START:
|
1346 | a672b469 | aliguori | case QEMU_VM_SECTION_FULL:
|
1347 | a672b469 | aliguori | /* Read section start */
|
1348 | a672b469 | aliguori | section_id = qemu_get_be32(f); |
1349 | a672b469 | aliguori | len = qemu_get_byte(f); |
1350 | a672b469 | aliguori | qemu_get_buffer(f, (uint8_t *)idstr, len); |
1351 | a672b469 | aliguori | idstr[len] = 0;
|
1352 | a672b469 | aliguori | instance_id = qemu_get_be32(f); |
1353 | a672b469 | aliguori | version_id = qemu_get_be32(f); |
1354 | a672b469 | aliguori | |
1355 | a672b469 | aliguori | /* Find savevm section */
|
1356 | a672b469 | aliguori | se = find_se(idstr, instance_id); |
1357 | a672b469 | aliguori | if (se == NULL) { |
1358 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id);
|
1359 | a672b469 | aliguori | ret = -EINVAL; |
1360 | a672b469 | aliguori | goto out;
|
1361 | a672b469 | aliguori | } |
1362 | a672b469 | aliguori | |
1363 | a672b469 | aliguori | /* Validate version */
|
1364 | a672b469 | aliguori | if (version_id > se->version_id) {
|
1365 | a672b469 | aliguori | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n",
|
1366 | a672b469 | aliguori | version_id, idstr, se->version_id); |
1367 | a672b469 | aliguori | ret = -EINVAL; |
1368 | a672b469 | aliguori | goto out;
|
1369 | a672b469 | aliguori | } |
1370 | a672b469 | aliguori | |
1371 | a672b469 | aliguori | /* Add entry */
|
1372 | a672b469 | aliguori | le = qemu_mallocz(sizeof(*le));
|
1373 | a672b469 | aliguori | |
1374 | a672b469 | aliguori | le->se = se; |
1375 | a672b469 | aliguori | le->section_id = section_id; |
1376 | a672b469 | aliguori | le->version_id = version_id; |
1377 | a672b469 | aliguori | le->next = first_le; |
1378 | a672b469 | aliguori | first_le = le; |
1379 | a672b469 | aliguori | |
1380 | 4082be4d | Juan Quintela | ret = vmstate_load(f, le->se, le->version_id); |
1381 | b5a22e4a | Juan Quintela | if (ret < 0) { |
1382 | b5a22e4a | Juan Quintela | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n",
|
1383 | b5a22e4a | Juan Quintela | instance_id, idstr); |
1384 | b5a22e4a | Juan Quintela | goto out;
|
1385 | b5a22e4a | Juan Quintela | } |
1386 | a672b469 | aliguori | break;
|
1387 | a672b469 | aliguori | case QEMU_VM_SECTION_PART:
|
1388 | a672b469 | aliguori | case QEMU_VM_SECTION_END:
|
1389 | a672b469 | aliguori | section_id = qemu_get_be32(f); |
1390 | a672b469 | aliguori | |
1391 | a672b469 | aliguori | for (le = first_le; le && le->section_id != section_id; le = le->next);
|
1392 | a672b469 | aliguori | if (le == NULL) { |
1393 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section %d\n", section_id);
|
1394 | a672b469 | aliguori | ret = -EINVAL; |
1395 | a672b469 | aliguori | goto out;
|
1396 | a672b469 | aliguori | } |
1397 | a672b469 | aliguori | |
1398 | 4082be4d | Juan Quintela | ret = vmstate_load(f, le->se, le->version_id); |
1399 | b5a22e4a | Juan Quintela | if (ret < 0) { |
1400 | b5a22e4a | Juan Quintela | fprintf(stderr, "qemu: warning: error while loading state section id %d\n",
|
1401 | b5a22e4a | Juan Quintela | section_id); |
1402 | b5a22e4a | Juan Quintela | goto out;
|
1403 | b5a22e4a | Juan Quintela | } |
1404 | a672b469 | aliguori | break;
|
1405 | a672b469 | aliguori | default:
|
1406 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section type %d\n", section_type);
|
1407 | a672b469 | aliguori | ret = -EINVAL; |
1408 | a672b469 | aliguori | goto out;
|
1409 | a672b469 | aliguori | } |
1410 | a672b469 | aliguori | } |
1411 | a672b469 | aliguori | |
1412 | a672b469 | aliguori | ret = 0;
|
1413 | a672b469 | aliguori | |
1414 | a672b469 | aliguori | out:
|
1415 | a672b469 | aliguori | while (first_le) {
|
1416 | a672b469 | aliguori | LoadStateEntry *le = first_le; |
1417 | a672b469 | aliguori | first_le = first_le->next; |
1418 | a672b469 | aliguori | qemu_free(le); |
1419 | a672b469 | aliguori | } |
1420 | a672b469 | aliguori | |
1421 | a672b469 | aliguori | if (qemu_file_has_error(f))
|
1422 | a672b469 | aliguori | ret = -EIO; |
1423 | a672b469 | aliguori | |
1424 | a672b469 | aliguori | return ret;
|
1425 | a672b469 | aliguori | } |
1426 | a672b469 | aliguori | |
1427 | a672b469 | aliguori | /* device can contain snapshots */
|
1428 | a672b469 | aliguori | static int bdrv_can_snapshot(BlockDriverState *bs) |
1429 | a672b469 | aliguori | { |
1430 | a672b469 | aliguori | return (bs &&
|
1431 | a672b469 | aliguori | !bdrv_is_removable(bs) && |
1432 | a672b469 | aliguori | !bdrv_is_read_only(bs)); |
1433 | a672b469 | aliguori | } |
1434 | a672b469 | aliguori | |
1435 | a672b469 | aliguori | /* device must be snapshots in order to have a reliable snapshot */
|
1436 | a672b469 | aliguori | static int bdrv_has_snapshot(BlockDriverState *bs) |
1437 | a672b469 | aliguori | { |
1438 | a672b469 | aliguori | return (bs &&
|
1439 | a672b469 | aliguori | !bdrv_is_removable(bs) && |
1440 | a672b469 | aliguori | !bdrv_is_read_only(bs)); |
1441 | a672b469 | aliguori | } |
1442 | a672b469 | aliguori | |
1443 | a672b469 | aliguori | static BlockDriverState *get_bs_snapshots(void) |
1444 | a672b469 | aliguori | { |
1445 | a672b469 | aliguori | BlockDriverState *bs; |
1446 | 751c6a17 | Gerd Hoffmann | DriveInfo *dinfo; |
1447 | a672b469 | aliguori | |
1448 | a672b469 | aliguori | if (bs_snapshots)
|
1449 | a672b469 | aliguori | return bs_snapshots;
|
1450 | 751c6a17 | Gerd Hoffmann | TAILQ_FOREACH(dinfo, &drives, next) { |
1451 | 751c6a17 | Gerd Hoffmann | bs = dinfo->bdrv; |
1452 | a672b469 | aliguori | if (bdrv_can_snapshot(bs))
|
1453 | a672b469 | aliguori | goto ok;
|
1454 | a672b469 | aliguori | } |
1455 | a672b469 | aliguori | return NULL; |
1456 | a672b469 | aliguori | ok:
|
1457 | a672b469 | aliguori | bs_snapshots = bs; |
1458 | a672b469 | aliguori | return bs;
|
1459 | a672b469 | aliguori | } |
1460 | a672b469 | aliguori | |
1461 | a672b469 | aliguori | static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, |
1462 | a672b469 | aliguori | const char *name) |
1463 | a672b469 | aliguori | { |
1464 | a672b469 | aliguori | QEMUSnapshotInfo *sn_tab, *sn; |
1465 | a672b469 | aliguori | int nb_sns, i, ret;
|
1466 | a672b469 | aliguori | |
1467 | a672b469 | aliguori | ret = -ENOENT; |
1468 | a672b469 | aliguori | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
1469 | a672b469 | aliguori | if (nb_sns < 0) |
1470 | a672b469 | aliguori | return ret;
|
1471 | a672b469 | aliguori | for(i = 0; i < nb_sns; i++) { |
1472 | a672b469 | aliguori | sn = &sn_tab[i]; |
1473 | a672b469 | aliguori | if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) {
|
1474 | a672b469 | aliguori | *sn_info = *sn; |
1475 | a672b469 | aliguori | ret = 0;
|
1476 | a672b469 | aliguori | break;
|
1477 | a672b469 | aliguori | } |
1478 | a672b469 | aliguori | } |
1479 | a672b469 | aliguori | qemu_free(sn_tab); |
1480 | a672b469 | aliguori | return ret;
|
1481 | a672b469 | aliguori | } |
1482 | a672b469 | aliguori | |
1483 | 376253ec | aliguori | void do_savevm(Monitor *mon, const char *name) |
1484 | a672b469 | aliguori | { |
1485 | 751c6a17 | Gerd Hoffmann | DriveInfo *dinfo; |
1486 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
1487 | a672b469 | aliguori | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; |
1488 | 751c6a17 | Gerd Hoffmann | int must_delete, ret;
|
1489 | a672b469 | aliguori | QEMUFile *f; |
1490 | a672b469 | aliguori | int saved_vm_running;
|
1491 | 2d22b18f | aliguori | uint32_t vm_state_size; |
1492 | a672b469 | aliguori | #ifdef _WIN32
|
1493 | a672b469 | aliguori | struct _timeb tb;
|
1494 | a672b469 | aliguori | #else
|
1495 | a672b469 | aliguori | struct timeval tv;
|
1496 | a672b469 | aliguori | #endif
|
1497 | a672b469 | aliguori | |
1498 | a672b469 | aliguori | bs = get_bs_snapshots(); |
1499 | a672b469 | aliguori | if (!bs) {
|
1500 | 376253ec | aliguori | monitor_printf(mon, "No block device can accept snapshots\n");
|
1501 | a672b469 | aliguori | return;
|
1502 | a672b469 | aliguori | } |
1503 | a672b469 | aliguori | |
1504 | a672b469 | aliguori | /* ??? Should this occur after vm_stop? */
|
1505 | a672b469 | aliguori | qemu_aio_flush(); |
1506 | a672b469 | aliguori | |
1507 | a672b469 | aliguori | saved_vm_running = vm_running; |
1508 | a672b469 | aliguori | vm_stop(0);
|
1509 | a672b469 | aliguori | |
1510 | a672b469 | aliguori | must_delete = 0;
|
1511 | a672b469 | aliguori | if (name) {
|
1512 | a672b469 | aliguori | ret = bdrv_snapshot_find(bs, old_sn, name); |
1513 | a672b469 | aliguori | if (ret >= 0) { |
1514 | a672b469 | aliguori | must_delete = 1;
|
1515 | a672b469 | aliguori | } |
1516 | a672b469 | aliguori | } |
1517 | a672b469 | aliguori | memset(sn, 0, sizeof(*sn)); |
1518 | a672b469 | aliguori | if (must_delete) {
|
1519 | a672b469 | aliguori | pstrcpy(sn->name, sizeof(sn->name), old_sn->name);
|
1520 | a672b469 | aliguori | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str);
|
1521 | a672b469 | aliguori | } else {
|
1522 | a672b469 | aliguori | if (name)
|
1523 | a672b469 | aliguori | pstrcpy(sn->name, sizeof(sn->name), name);
|
1524 | a672b469 | aliguori | } |
1525 | a672b469 | aliguori | |
1526 | a672b469 | aliguori | /* fill auxiliary fields */
|
1527 | a672b469 | aliguori | #ifdef _WIN32
|
1528 | a672b469 | aliguori | _ftime(&tb); |
1529 | a672b469 | aliguori | sn->date_sec = tb.time; |
1530 | a672b469 | aliguori | sn->date_nsec = tb.millitm * 1000000;
|
1531 | a672b469 | aliguori | #else
|
1532 | a672b469 | aliguori | gettimeofday(&tv, NULL);
|
1533 | a672b469 | aliguori | sn->date_sec = tv.tv_sec; |
1534 | a672b469 | aliguori | sn->date_nsec = tv.tv_usec * 1000;
|
1535 | a672b469 | aliguori | #endif
|
1536 | a672b469 | aliguori | sn->vm_clock_nsec = qemu_get_clock(vm_clock); |
1537 | a672b469 | aliguori | |
1538 | a672b469 | aliguori | /* save the VM state */
|
1539 | 45566e9c | Christoph Hellwig | f = qemu_fopen_bdrv(bs, 1);
|
1540 | a672b469 | aliguori | if (!f) {
|
1541 | 376253ec | aliguori | monitor_printf(mon, "Could not open VM state file\n");
|
1542 | a672b469 | aliguori | goto the_end;
|
1543 | a672b469 | aliguori | } |
1544 | a672b469 | aliguori | ret = qemu_savevm_state(f); |
1545 | 2d22b18f | aliguori | vm_state_size = qemu_ftell(f); |
1546 | a672b469 | aliguori | qemu_fclose(f); |
1547 | a672b469 | aliguori | if (ret < 0) { |
1548 | 376253ec | aliguori | monitor_printf(mon, "Error %d while writing VM\n", ret);
|
1549 | a672b469 | aliguori | goto the_end;
|
1550 | a672b469 | aliguori | } |
1551 | a672b469 | aliguori | |
1552 | a672b469 | aliguori | /* create the snapshots */
|
1553 | a672b469 | aliguori | |
1554 | 751c6a17 | Gerd Hoffmann | TAILQ_FOREACH(dinfo, &drives, next) { |
1555 | 751c6a17 | Gerd Hoffmann | bs1 = dinfo->bdrv; |
1556 | a672b469 | aliguori | if (bdrv_has_snapshot(bs1)) {
|
1557 | a672b469 | aliguori | if (must_delete) {
|
1558 | a672b469 | aliguori | ret = bdrv_snapshot_delete(bs1, old_sn->id_str); |
1559 | a672b469 | aliguori | if (ret < 0) { |
1560 | 376253ec | aliguori | monitor_printf(mon, |
1561 | 376253ec | aliguori | "Error while deleting snapshot on '%s'\n",
|
1562 | 376253ec | aliguori | bdrv_get_device_name(bs1)); |
1563 | a672b469 | aliguori | } |
1564 | a672b469 | aliguori | } |
1565 | 2d22b18f | aliguori | /* Write VM state size only to the image that contains the state */
|
1566 | 2d22b18f | aliguori | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0);
|
1567 | a672b469 | aliguori | ret = bdrv_snapshot_create(bs1, sn); |
1568 | a672b469 | aliguori | if (ret < 0) { |
1569 | 376253ec | aliguori | monitor_printf(mon, "Error while creating snapshot on '%s'\n",
|
1570 | 376253ec | aliguori | bdrv_get_device_name(bs1)); |
1571 | a672b469 | aliguori | } |
1572 | a672b469 | aliguori | } |
1573 | a672b469 | aliguori | } |
1574 | a672b469 | aliguori | |
1575 | a672b469 | aliguori | the_end:
|
1576 | a672b469 | aliguori | if (saved_vm_running)
|
1577 | a672b469 | aliguori | vm_start(); |
1578 | a672b469 | aliguori | } |
1579 | a672b469 | aliguori | |
1580 | 05f2401e | Juan Quintela | int load_vmstate(Monitor *mon, const char *name) |
1581 | a672b469 | aliguori | { |
1582 | 751c6a17 | Gerd Hoffmann | DriveInfo *dinfo; |
1583 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
1584 | 2d22b18f | aliguori | QEMUSnapshotInfo sn; |
1585 | a672b469 | aliguori | QEMUFile *f; |
1586 | 751c6a17 | Gerd Hoffmann | int ret;
|
1587 | a672b469 | aliguori | |
1588 | a672b469 | aliguori | bs = get_bs_snapshots(); |
1589 | a672b469 | aliguori | if (!bs) {
|
1590 | 376253ec | aliguori | monitor_printf(mon, "No block device supports snapshots\n");
|
1591 | 05f2401e | Juan Quintela | return -EINVAL;
|
1592 | a672b469 | aliguori | } |
1593 | a672b469 | aliguori | |
1594 | a672b469 | aliguori | /* Flush all IO requests so they don't interfere with the new state. */
|
1595 | a672b469 | aliguori | qemu_aio_flush(); |
1596 | a672b469 | aliguori | |
1597 | 751c6a17 | Gerd Hoffmann | TAILQ_FOREACH(dinfo, &drives, next) { |
1598 | 751c6a17 | Gerd Hoffmann | bs1 = dinfo->bdrv; |
1599 | a672b469 | aliguori | if (bdrv_has_snapshot(bs1)) {
|
1600 | a672b469 | aliguori | ret = bdrv_snapshot_goto(bs1, name); |
1601 | a672b469 | aliguori | if (ret < 0) { |
1602 | a672b469 | aliguori | if (bs != bs1)
|
1603 | 376253ec | aliguori | monitor_printf(mon, "Warning: ");
|
1604 | a672b469 | aliguori | switch(ret) {
|
1605 | a672b469 | aliguori | case -ENOTSUP:
|
1606 | 376253ec | aliguori | monitor_printf(mon, |
1607 | 376253ec | aliguori | "Snapshots not supported on device '%s'\n",
|
1608 | 376253ec | aliguori | bdrv_get_device_name(bs1)); |
1609 | a672b469 | aliguori | break;
|
1610 | a672b469 | aliguori | case -ENOENT:
|
1611 | 376253ec | aliguori | monitor_printf(mon, "Could not find snapshot '%s' on "
|
1612 | 376253ec | aliguori | "device '%s'\n",
|
1613 | 376253ec | aliguori | name, bdrv_get_device_name(bs1)); |
1614 | a672b469 | aliguori | break;
|
1615 | a672b469 | aliguori | default:
|
1616 | 376253ec | aliguori | monitor_printf(mon, "Error %d while activating snapshot on"
|
1617 | 376253ec | aliguori | " '%s'\n", ret, bdrv_get_device_name(bs1));
|
1618 | a672b469 | aliguori | break;
|
1619 | a672b469 | aliguori | } |
1620 | a672b469 | aliguori | /* fatal on snapshot block device */
|
1621 | a672b469 | aliguori | if (bs == bs1)
|
1622 | 05f2401e | Juan Quintela | return 0; |
1623 | a672b469 | aliguori | } |
1624 | a672b469 | aliguori | } |
1625 | a672b469 | aliguori | } |
1626 | a672b469 | aliguori | |
1627 | 2d22b18f | aliguori | /* Don't even try to load empty VM states */
|
1628 | 2d22b18f | aliguori | ret = bdrv_snapshot_find(bs, &sn, name); |
1629 | 2d22b18f | aliguori | if ((ret >= 0) && (sn.vm_state_size == 0)) |
1630 | 05f2401e | Juan Quintela | return -EINVAL;
|
1631 | 2d22b18f | aliguori | |
1632 | a672b469 | aliguori | /* restore the VM state */
|
1633 | 45566e9c | Christoph Hellwig | f = qemu_fopen_bdrv(bs, 0);
|
1634 | a672b469 | aliguori | if (!f) {
|
1635 | 376253ec | aliguori | monitor_printf(mon, "Could not open VM state file\n");
|
1636 | 05f2401e | Juan Quintela | return -EINVAL;
|
1637 | a672b469 | aliguori | } |
1638 | a672b469 | aliguori | ret = qemu_loadvm_state(f); |
1639 | a672b469 | aliguori | qemu_fclose(f); |
1640 | a672b469 | aliguori | if (ret < 0) { |
1641 | 376253ec | aliguori | monitor_printf(mon, "Error %d while loading VM state\n", ret);
|
1642 | 05f2401e | Juan Quintela | return ret;
|
1643 | a672b469 | aliguori | } |
1644 | 05f2401e | Juan Quintela | return 0; |
1645 | 7b630349 | Juan Quintela | } |
1646 | 7b630349 | Juan Quintela | |
1647 | 376253ec | aliguori | void do_delvm(Monitor *mon, const char *name) |
1648 | a672b469 | aliguori | { |
1649 | 751c6a17 | Gerd Hoffmann | DriveInfo *dinfo; |
1650 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
1651 | 751c6a17 | Gerd Hoffmann | int ret;
|
1652 | a672b469 | aliguori | |
1653 | a672b469 | aliguori | bs = get_bs_snapshots(); |
1654 | a672b469 | aliguori | if (!bs) {
|
1655 | 376253ec | aliguori | monitor_printf(mon, "No block device supports snapshots\n");
|
1656 | a672b469 | aliguori | return;
|
1657 | a672b469 | aliguori | } |
1658 | a672b469 | aliguori | |
1659 | 751c6a17 | Gerd Hoffmann | TAILQ_FOREACH(dinfo, &drives, next) { |
1660 | 751c6a17 | Gerd Hoffmann | bs1 = dinfo->bdrv; |
1661 | a672b469 | aliguori | if (bdrv_has_snapshot(bs1)) {
|
1662 | a672b469 | aliguori | ret = bdrv_snapshot_delete(bs1, name); |
1663 | a672b469 | aliguori | if (ret < 0) { |
1664 | a672b469 | aliguori | if (ret == -ENOTSUP)
|
1665 | 376253ec | aliguori | monitor_printf(mon, |
1666 | 376253ec | aliguori | "Snapshots not supported on device '%s'\n",
|
1667 | 376253ec | aliguori | bdrv_get_device_name(bs1)); |
1668 | a672b469 | aliguori | else
|
1669 | 376253ec | aliguori | monitor_printf(mon, "Error %d while deleting snapshot on "
|
1670 | 376253ec | aliguori | "'%s'\n", ret, bdrv_get_device_name(bs1));
|
1671 | a672b469 | aliguori | } |
1672 | a672b469 | aliguori | } |
1673 | a672b469 | aliguori | } |
1674 | a672b469 | aliguori | } |
1675 | a672b469 | aliguori | |
1676 | 376253ec | aliguori | void do_info_snapshots(Monitor *mon)
|
1677 | a672b469 | aliguori | { |
1678 | 751c6a17 | Gerd Hoffmann | DriveInfo *dinfo; |
1679 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
1680 | a672b469 | aliguori | QEMUSnapshotInfo *sn_tab, *sn; |
1681 | a672b469 | aliguori | int nb_sns, i;
|
1682 | a672b469 | aliguori | char buf[256]; |
1683 | a672b469 | aliguori | |
1684 | a672b469 | aliguori | bs = get_bs_snapshots(); |
1685 | a672b469 | aliguori | if (!bs) {
|
1686 | 376253ec | aliguori | monitor_printf(mon, "No available block device supports snapshots\n");
|
1687 | a672b469 | aliguori | return;
|
1688 | a672b469 | aliguori | } |
1689 | 376253ec | aliguori | monitor_printf(mon, "Snapshot devices:");
|
1690 | 751c6a17 | Gerd Hoffmann | TAILQ_FOREACH(dinfo, &drives, next) { |
1691 | 751c6a17 | Gerd Hoffmann | bs1 = dinfo->bdrv; |
1692 | a672b469 | aliguori | if (bdrv_has_snapshot(bs1)) {
|
1693 | a672b469 | aliguori | if (bs == bs1)
|
1694 | 376253ec | aliguori | monitor_printf(mon, " %s", bdrv_get_device_name(bs1));
|
1695 | a672b469 | aliguori | } |
1696 | a672b469 | aliguori | } |
1697 | 376253ec | aliguori | monitor_printf(mon, "\n");
|
1698 | a672b469 | aliguori | |
1699 | a672b469 | aliguori | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
1700 | a672b469 | aliguori | if (nb_sns < 0) { |
1701 | 376253ec | aliguori | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns);
|
1702 | a672b469 | aliguori | return;
|
1703 | a672b469 | aliguori | } |
1704 | 376253ec | aliguori | monitor_printf(mon, "Snapshot list (from %s):\n",
|
1705 | 376253ec | aliguori | bdrv_get_device_name(bs)); |
1706 | 376253ec | aliguori | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); |
1707 | a672b469 | aliguori | for(i = 0; i < nb_sns; i++) { |
1708 | a672b469 | aliguori | sn = &sn_tab[i]; |
1709 | 376253ec | aliguori | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
1710 | a672b469 | aliguori | } |
1711 | a672b469 | aliguori | qemu_free(sn_tab); |
1712 | a672b469 | aliguori | } |