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1 | a672b469 | aliguori | /*
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2 | a672b469 | aliguori | * QEMU System Emulator
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3 | a672b469 | aliguori | *
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4 | a672b469 | aliguori | * Copyright (c) 2003-2008 Fabrice Bellard
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5 | a672b469 | aliguori | *
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6 | a672b469 | aliguori | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | a672b469 | aliguori | * of this software and associated documentation files (the "Software"), to deal
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8 | a672b469 | aliguori | * in the Software without restriction, including without limitation the rights
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9 | a672b469 | aliguori | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | a672b469 | aliguori | * copies of the Software, and to permit persons to whom the Software is
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11 | a672b469 | aliguori | * furnished to do so, subject to the following conditions:
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12 | a672b469 | aliguori | *
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13 | a672b469 | aliguori | * The above copyright notice and this permission notice shall be included in
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14 | a672b469 | aliguori | * all copies or substantial portions of the Software.
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15 | a672b469 | aliguori | *
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16 | a672b469 | aliguori | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | a672b469 | aliguori | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | a672b469 | aliguori | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | a672b469 | aliguori | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | a672b469 | aliguori | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | a672b469 | aliguori | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | a672b469 | aliguori | * THE SOFTWARE.
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23 | a672b469 | aliguori | */
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24 | a672b469 | aliguori | #include <unistd.h> |
25 | a672b469 | aliguori | #include <fcntl.h> |
26 | a672b469 | aliguori | #include <time.h> |
27 | a672b469 | aliguori | #include <errno.h> |
28 | a672b469 | aliguori | #include <sys/time.h> |
29 | a672b469 | aliguori | #include <zlib.h> |
30 | a672b469 | aliguori | |
31 | 71e72a19 | Juan Quintela | /* Needed early for CONFIG_BSD etc. */
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32 | d40cdb10 | blueswir1 | #include "config-host.h" |
33 | d40cdb10 | blueswir1 | |
34 | a672b469 | aliguori | #ifndef _WIN32
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35 | a672b469 | aliguori | #include <sys/times.h> |
36 | a672b469 | aliguori | #include <sys/wait.h> |
37 | a672b469 | aliguori | #include <termios.h> |
38 | a672b469 | aliguori | #include <sys/mman.h> |
39 | a672b469 | aliguori | #include <sys/ioctl.h> |
40 | a672b469 | aliguori | #include <sys/resource.h> |
41 | a672b469 | aliguori | #include <sys/socket.h> |
42 | a672b469 | aliguori | #include <netinet/in.h> |
43 | a672b469 | aliguori | #include <net/if.h> |
44 | a672b469 | aliguori | #include <arpa/inet.h> |
45 | a672b469 | aliguori | #include <dirent.h> |
46 | a672b469 | aliguori | #include <netdb.h> |
47 | a672b469 | aliguori | #include <sys/select.h> |
48 | 71e72a19 | Juan Quintela | #ifdef CONFIG_BSD
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49 | a672b469 | aliguori | #include <sys/stat.h> |
50 | a167ba50 | Aurelien Jarno | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
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51 | a672b469 | aliguori | #include <libutil.h> |
52 | a672b469 | aliguori | #else
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53 | a672b469 | aliguori | #include <util.h> |
54 | a672b469 | aliguori | #endif
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55 | a672b469 | aliguori | #ifdef __linux__
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56 | a672b469 | aliguori | #include <pty.h> |
57 | a672b469 | aliguori | #include <malloc.h> |
58 | a672b469 | aliguori | #include <linux/rtc.h> |
59 | a672b469 | aliguori | #endif
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60 | a672b469 | aliguori | #endif
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61 | a672b469 | aliguori | #endif
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62 | a672b469 | aliguori | |
63 | a672b469 | aliguori | #ifdef _WIN32
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64 | 49dc768d | aliguori | #include <windows.h> |
65 | a672b469 | aliguori | #include <malloc.h> |
66 | a672b469 | aliguori | #include <sys/timeb.h> |
67 | a672b469 | aliguori | #include <mmsystem.h> |
68 | a672b469 | aliguori | #define getopt_long_only getopt_long
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69 | a672b469 | aliguori | #define memalign(align, size) malloc(size)
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70 | a672b469 | aliguori | #endif
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71 | a672b469 | aliguori | |
72 | 511d2b14 | blueswir1 | #include "qemu-common.h" |
73 | 511d2b14 | blueswir1 | #include "hw/hw.h" |
74 | 7685ee6a | Alex Williamson | #include "hw/qdev.h" |
75 | 511d2b14 | blueswir1 | #include "net.h" |
76 | 511d2b14 | blueswir1 | #include "monitor.h" |
77 | 511d2b14 | blueswir1 | #include "sysemu.h" |
78 | 511d2b14 | blueswir1 | #include "qemu-timer.h" |
79 | 511d2b14 | blueswir1 | #include "qemu-char.h" |
80 | 511d2b14 | blueswir1 | #include "audio/audio.h" |
81 | 511d2b14 | blueswir1 | #include "migration.h" |
82 | 511d2b14 | blueswir1 | #include "qemu_socket.h" |
83 | 72cf2d4f | Blue Swirl | #include "qemu-queue.h" |
84 | 17a4663e | Blue Swirl | #include "cpus.h" |
85 | 511d2b14 | blueswir1 | |
86 | a672b469 | aliguori | #define SELF_ANNOUNCE_ROUNDS 5 |
87 | a672b469 | aliguori | |
88 | 18995b98 | Nolan | #ifndef ETH_P_RARP
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89 | f8778a77 | Stefan Berger | #define ETH_P_RARP 0x8035 |
90 | 18995b98 | Nolan | #endif
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91 | 18995b98 | Nolan | #define ARP_HTYPE_ETH 0x0001 |
92 | 18995b98 | Nolan | #define ARP_PTYPE_IP 0x0800 |
93 | 18995b98 | Nolan | #define ARP_OP_REQUEST_REV 0x3 |
94 | 18995b98 | Nolan | |
95 | 18995b98 | Nolan | static int announce_self_create(uint8_t *buf, |
96 | a672b469 | aliguori | uint8_t *mac_addr) |
97 | a672b469 | aliguori | { |
98 | 18995b98 | Nolan | /* Ethernet header. */
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99 | 18995b98 | Nolan | memset(buf, 0xff, 6); /* destination MAC addr */ |
100 | 18995b98 | Nolan | memcpy(buf + 6, mac_addr, 6); /* source MAC addr */ |
101 | 18995b98 | Nolan | *(uint16_t *)(buf + 12) = htons(ETH_P_RARP); /* ethertype */ |
102 | 18995b98 | Nolan | |
103 | 18995b98 | Nolan | /* RARP header. */
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104 | 18995b98 | Nolan | *(uint16_t *)(buf + 14) = htons(ARP_HTYPE_ETH); /* hardware addr space */ |
105 | 18995b98 | Nolan | *(uint16_t *)(buf + 16) = htons(ARP_PTYPE_IP); /* protocol addr space */ |
106 | 18995b98 | Nolan | *(buf + 18) = 6; /* hardware addr length (ethernet) */ |
107 | 18995b98 | Nolan | *(buf + 19) = 4; /* protocol addr length (IPv4) */ |
108 | 18995b98 | Nolan | *(uint16_t *)(buf + 20) = htons(ARP_OP_REQUEST_REV); /* opcode */ |
109 | 18995b98 | Nolan | memcpy(buf + 22, mac_addr, 6); /* source hw addr */ |
110 | 18995b98 | Nolan | memset(buf + 28, 0x00, 4); /* source protocol addr */ |
111 | 18995b98 | Nolan | memcpy(buf + 32, mac_addr, 6); /* target hw addr */ |
112 | 18995b98 | Nolan | memset(buf + 38, 0x00, 4); /* target protocol addr */ |
113 | 18995b98 | Nolan | |
114 | 18995b98 | Nolan | /* Padding to get up to 60 bytes (ethernet min packet size, minus FCS). */
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115 | 18995b98 | Nolan | memset(buf + 42, 0x00, 18); |
116 | 18995b98 | Nolan | |
117 | 18995b98 | Nolan | return 60; /* len (FCS will be added by hardware) */ |
118 | a672b469 | aliguori | } |
119 | a672b469 | aliguori | |
120 | f401ca22 | Mark McLoughlin | static void qemu_announce_self_iter(NICState *nic, void *opaque) |
121 | a672b469 | aliguori | { |
122 | 18995b98 | Nolan | uint8_t buf[60];
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123 | f401ca22 | Mark McLoughlin | int len;
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124 | f401ca22 | Mark McLoughlin | |
125 | f401ca22 | Mark McLoughlin | len = announce_self_create(buf, nic->conf->macaddr.a); |
126 | f401ca22 | Mark McLoughlin | |
127 | f401ca22 | Mark McLoughlin | qemu_send_packet_raw(&nic->nc, buf, len); |
128 | f401ca22 | Mark McLoughlin | } |
129 | f401ca22 | Mark McLoughlin | |
130 | f401ca22 | Mark McLoughlin | |
131 | f401ca22 | Mark McLoughlin | static void qemu_announce_self_once(void *opaque) |
132 | f401ca22 | Mark McLoughlin | { |
133 | ed8b330b | Gleb Natapov | static int count = SELF_ANNOUNCE_ROUNDS; |
134 | ed8b330b | Gleb Natapov | QEMUTimer *timer = *(QEMUTimer **)opaque; |
135 | a672b469 | aliguori | |
136 | f401ca22 | Mark McLoughlin | qemu_foreach_nic(qemu_announce_self_iter, NULL);
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137 | f401ca22 | Mark McLoughlin | |
138 | 18995b98 | Nolan | if (--count) {
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139 | 18995b98 | Nolan | /* delay 50ms, 150ms, 250ms, ... */
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140 | 7bd427d8 | Paolo Bonzini | qemu_mod_timer(timer, qemu_get_clock_ms(rt_clock) + |
141 | 18995b98 | Nolan | 50 + (SELF_ANNOUNCE_ROUNDS - count - 1) * 100); |
142 | ed8b330b | Gleb Natapov | } else {
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143 | ed8b330b | Gleb Natapov | qemu_del_timer(timer); |
144 | ed8b330b | Gleb Natapov | qemu_free_timer(timer); |
145 | ed8b330b | Gleb Natapov | } |
146 | ed8b330b | Gleb Natapov | } |
147 | ed8b330b | Gleb Natapov | |
148 | ed8b330b | Gleb Natapov | void qemu_announce_self(void) |
149 | ed8b330b | Gleb Natapov | { |
150 | ed8b330b | Gleb Natapov | static QEMUTimer *timer;
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151 | 7bd427d8 | Paolo Bonzini | timer = qemu_new_timer_ms(rt_clock, qemu_announce_self_once, &timer); |
152 | ed8b330b | Gleb Natapov | qemu_announce_self_once(&timer); |
153 | a672b469 | aliguori | } |
154 | a672b469 | aliguori | |
155 | a672b469 | aliguori | /***********************************************************/
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156 | a672b469 | aliguori | /* savevm/loadvm support */
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157 | a672b469 | aliguori | |
158 | a672b469 | aliguori | #define IO_BUF_SIZE 32768 |
159 | a672b469 | aliguori | |
160 | a672b469 | aliguori | struct QEMUFile {
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161 | a672b469 | aliguori | QEMUFilePutBufferFunc *put_buffer; |
162 | a672b469 | aliguori | QEMUFileGetBufferFunc *get_buffer; |
163 | a672b469 | aliguori | QEMUFileCloseFunc *close; |
164 | a672b469 | aliguori | QEMUFileRateLimit *rate_limit; |
165 | 19629537 | Glauber Costa | QEMUFileSetRateLimit *set_rate_limit; |
166 | c163b5ca | lirans@il.ibm.com | QEMUFileGetRateLimit *get_rate_limit; |
167 | a672b469 | aliguori | void *opaque;
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168 | a672b469 | aliguori | int is_write;
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169 | a672b469 | aliguori | |
170 | a672b469 | aliguori | int64_t buf_offset; /* start of buffer when writing, end of buffer
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171 | a672b469 | aliguori | when reading */
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172 | a672b469 | aliguori | int buf_index;
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173 | a672b469 | aliguori | int buf_size; /* 0 when writing */ |
174 | a672b469 | aliguori | uint8_t buf[IO_BUF_SIZE]; |
175 | a672b469 | aliguori | |
176 | a672b469 | aliguori | int has_error;
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177 | a672b469 | aliguori | }; |
178 | a672b469 | aliguori | |
179 | 7f79dd28 | Paolo Bonzini | typedef struct QEMUFileStdio |
180 | a672b469 | aliguori | { |
181 | 7f79dd28 | Paolo Bonzini | FILE *stdio_file; |
182 | a672b469 | aliguori | QEMUFile *file; |
183 | 7f79dd28 | Paolo Bonzini | } QEMUFileStdio; |
184 | a672b469 | aliguori | |
185 | a672b469 | aliguori | typedef struct QEMUFileSocket |
186 | a672b469 | aliguori | { |
187 | a672b469 | aliguori | int fd;
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188 | a672b469 | aliguori | QEMUFile *file; |
189 | a672b469 | aliguori | } QEMUFileSocket; |
190 | a672b469 | aliguori | |
191 | a672b469 | aliguori | static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
192 | a672b469 | aliguori | { |
193 | a672b469 | aliguori | QEMUFileSocket *s = opaque; |
194 | a672b469 | aliguori | ssize_t len; |
195 | a672b469 | aliguori | |
196 | a672b469 | aliguori | do {
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197 | c5b76b38 | Blue Swirl | len = recv(s->fd, (void *)buf, size, 0); |
198 | a672b469 | aliguori | } while (len == -1 && socket_error() == EINTR); |
199 | a672b469 | aliguori | |
200 | a672b469 | aliguori | if (len == -1) |
201 | a672b469 | aliguori | len = -socket_error(); |
202 | a672b469 | aliguori | |
203 | a672b469 | aliguori | return len;
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204 | a672b469 | aliguori | } |
205 | a672b469 | aliguori | |
206 | a672b469 | aliguori | static int socket_close(void *opaque) |
207 | a672b469 | aliguori | { |
208 | a672b469 | aliguori | QEMUFileSocket *s = opaque; |
209 | a672b469 | aliguori | qemu_free(s); |
210 | a672b469 | aliguori | return 0; |
211 | a672b469 | aliguori | } |
212 | a672b469 | aliguori | |
213 | 7f79dd28 | Paolo Bonzini | static int stdio_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size) |
214 | a672b469 | aliguori | { |
215 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
216 | 7f79dd28 | Paolo Bonzini | return fwrite(buf, 1, size, s->stdio_file); |
217 | a672b469 | aliguori | } |
218 | a672b469 | aliguori | |
219 | 7f79dd28 | Paolo Bonzini | static int stdio_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
220 | a672b469 | aliguori | { |
221 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
222 | 7f79dd28 | Paolo Bonzini | FILE *fp = s->stdio_file; |
223 | 8a67ec4d | Uri Lublin | int bytes;
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224 | 8a67ec4d | Uri Lublin | |
225 | 8a67ec4d | Uri Lublin | do {
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226 | 8a67ec4d | Uri Lublin | clearerr(fp); |
227 | 8a67ec4d | Uri Lublin | bytes = fread(buf, 1, size, fp);
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228 | 8a67ec4d | Uri Lublin | } while ((bytes == 0) && ferror(fp) && (errno == EINTR)); |
229 | 8a67ec4d | Uri Lublin | return bytes;
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230 | a672b469 | aliguori | } |
231 | a672b469 | aliguori | |
232 | 7f79dd28 | Paolo Bonzini | static int stdio_pclose(void *opaque) |
233 | 7f79dd28 | Paolo Bonzini | { |
234 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
235 | 41ef56e6 | Anthony Liguori | int ret;
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236 | 41ef56e6 | Anthony Liguori | ret = pclose(s->stdio_file); |
237 | 7f79dd28 | Paolo Bonzini | qemu_free(s); |
238 | 41ef56e6 | Anthony Liguori | return ret;
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239 | 7f79dd28 | Paolo Bonzini | } |
240 | 7f79dd28 | Paolo Bonzini | |
241 | 7f79dd28 | Paolo Bonzini | static int stdio_fclose(void *opaque) |
242 | a672b469 | aliguori | { |
243 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
244 | 7f79dd28 | Paolo Bonzini | fclose(s->stdio_file); |
245 | a672b469 | aliguori | qemu_free(s); |
246 | a672b469 | aliguori | return 0; |
247 | a672b469 | aliguori | } |
248 | a672b469 | aliguori | |
249 | 7f79dd28 | Paolo Bonzini | QEMUFile *qemu_popen(FILE *stdio_file, const char *mode) |
250 | a672b469 | aliguori | { |
251 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s; |
252 | a672b469 | aliguori | |
253 | 7f79dd28 | Paolo Bonzini | if (stdio_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) { |
254 | a672b469 | aliguori | fprintf(stderr, "qemu_popen: Argument validity check failed\n");
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255 | a672b469 | aliguori | return NULL; |
256 | a672b469 | aliguori | } |
257 | a672b469 | aliguori | |
258 | 7f79dd28 | Paolo Bonzini | s = qemu_mallocz(sizeof(QEMUFileStdio));
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259 | a672b469 | aliguori | |
260 | 7f79dd28 | Paolo Bonzini | s->stdio_file = stdio_file; |
261 | a672b469 | aliguori | |
262 | a672b469 | aliguori | if(mode[0] == 'r') { |
263 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_pclose,
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264 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
265 | a672b469 | aliguori | } else {
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266 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_pclose,
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267 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
268 | a672b469 | aliguori | } |
269 | a672b469 | aliguori | return s->file;
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270 | a672b469 | aliguori | } |
271 | a672b469 | aliguori | |
272 | a672b469 | aliguori | QEMUFile *qemu_popen_cmd(const char *command, const char *mode) |
273 | a672b469 | aliguori | { |
274 | a672b469 | aliguori | FILE *popen_file; |
275 | a672b469 | aliguori | |
276 | a672b469 | aliguori | popen_file = popen(command, mode); |
277 | a672b469 | aliguori | if(popen_file == NULL) { |
278 | a672b469 | aliguori | return NULL; |
279 | a672b469 | aliguori | } |
280 | a672b469 | aliguori | |
281 | a672b469 | aliguori | return qemu_popen(popen_file, mode);
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282 | a672b469 | aliguori | } |
283 | a672b469 | aliguori | |
284 | 7f79dd28 | Paolo Bonzini | int qemu_stdio_fd(QEMUFile *f)
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285 | 8a43b1ea | Chris Lalancette | { |
286 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *p; |
287 | 8a43b1ea | Chris Lalancette | int fd;
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288 | 8a43b1ea | Chris Lalancette | |
289 | 7f79dd28 | Paolo Bonzini | p = (QEMUFileStdio *)f->opaque; |
290 | 7f79dd28 | Paolo Bonzini | fd = fileno(p->stdio_file); |
291 | 8a43b1ea | Chris Lalancette | |
292 | 8a43b1ea | Chris Lalancette | return fd;
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293 | 8a43b1ea | Chris Lalancette | } |
294 | 8a43b1ea | Chris Lalancette | |
295 | 5ac1fad3 | Paolo Bonzini | QEMUFile *qemu_fdopen(int fd, const char *mode) |
296 | 5ac1fad3 | Paolo Bonzini | { |
297 | 5ac1fad3 | Paolo Bonzini | QEMUFileStdio *s; |
298 | 5ac1fad3 | Paolo Bonzini | |
299 | 5ac1fad3 | Paolo Bonzini | if (mode == NULL || |
300 | 5ac1fad3 | Paolo Bonzini | (mode[0] != 'r' && mode[0] != 'w') || |
301 | 5ac1fad3 | Paolo Bonzini | mode[1] != 'b' || mode[2] != 0) { |
302 | 5ac1fad3 | Paolo Bonzini | fprintf(stderr, "qemu_fdopen: Argument validity check failed\n");
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303 | 5ac1fad3 | Paolo Bonzini | return NULL; |
304 | 5ac1fad3 | Paolo Bonzini | } |
305 | 5ac1fad3 | Paolo Bonzini | |
306 | 5ac1fad3 | Paolo Bonzini | s = qemu_mallocz(sizeof(QEMUFileStdio));
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307 | 5ac1fad3 | Paolo Bonzini | s->stdio_file = fdopen(fd, mode); |
308 | 5ac1fad3 | Paolo Bonzini | if (!s->stdio_file)
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309 | 5ac1fad3 | Paolo Bonzini | goto fail;
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310 | 5ac1fad3 | Paolo Bonzini | |
311 | 5ac1fad3 | Paolo Bonzini | if(mode[0] == 'r') { |
312 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_fclose,
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313 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
314 | 5ac1fad3 | Paolo Bonzini | } else {
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315 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_fclose,
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316 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
317 | 5ac1fad3 | Paolo Bonzini | } |
318 | 5ac1fad3 | Paolo Bonzini | return s->file;
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319 | 5ac1fad3 | Paolo Bonzini | |
320 | 5ac1fad3 | Paolo Bonzini | fail:
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321 | 5ac1fad3 | Paolo Bonzini | qemu_free(s); |
322 | 5ac1fad3 | Paolo Bonzini | return NULL; |
323 | 5ac1fad3 | Paolo Bonzini | } |
324 | 5ac1fad3 | Paolo Bonzini | |
325 | a672b469 | aliguori | QEMUFile *qemu_fopen_socket(int fd)
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326 | a672b469 | aliguori | { |
327 | a672b469 | aliguori | QEMUFileSocket *s = qemu_mallocz(sizeof(QEMUFileSocket));
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328 | a672b469 | aliguori | |
329 | a672b469 | aliguori | s->fd = fd; |
330 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close,
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331 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
332 | a672b469 | aliguori | return s->file;
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333 | a672b469 | aliguori | } |
334 | a672b469 | aliguori | |
335 | a672b469 | aliguori | static int file_put_buffer(void *opaque, const uint8_t *buf, |
336 | a672b469 | aliguori | int64_t pos, int size)
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337 | a672b469 | aliguori | { |
338 | a672b469 | aliguori | QEMUFileStdio *s = opaque; |
339 | 7f79dd28 | Paolo Bonzini | fseek(s->stdio_file, pos, SEEK_SET); |
340 | 5fdb3aa1 | Kirill A. Shutemov | return fwrite(buf, 1, size, s->stdio_file); |
341 | a672b469 | aliguori | } |
342 | a672b469 | aliguori | |
343 | a672b469 | aliguori | static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
344 | a672b469 | aliguori | { |
345 | a672b469 | aliguori | QEMUFileStdio *s = opaque; |
346 | 7f79dd28 | Paolo Bonzini | fseek(s->stdio_file, pos, SEEK_SET); |
347 | 7f79dd28 | Paolo Bonzini | return fread(buf, 1, size, s->stdio_file); |
348 | a672b469 | aliguori | } |
349 | a672b469 | aliguori | |
350 | a672b469 | aliguori | QEMUFile *qemu_fopen(const char *filename, const char *mode) |
351 | a672b469 | aliguori | { |
352 | a672b469 | aliguori | QEMUFileStdio *s; |
353 | a672b469 | aliguori | |
354 | 7f79dd28 | Paolo Bonzini | if (mode == NULL || |
355 | 7f79dd28 | Paolo Bonzini | (mode[0] != 'r' && mode[0] != 'w') || |
356 | 7f79dd28 | Paolo Bonzini | mode[1] != 'b' || mode[2] != 0) { |
357 | 090414a3 | Blue Swirl | fprintf(stderr, "qemu_fopen: Argument validity check failed\n");
|
358 | 7f79dd28 | Paolo Bonzini | return NULL; |
359 | 7f79dd28 | Paolo Bonzini | } |
360 | 7f79dd28 | Paolo Bonzini | |
361 | a672b469 | aliguori | s = qemu_mallocz(sizeof(QEMUFileStdio));
|
362 | a672b469 | aliguori | |
363 | 7f79dd28 | Paolo Bonzini | s->stdio_file = fopen(filename, mode); |
364 | 7f79dd28 | Paolo Bonzini | if (!s->stdio_file)
|
365 | a672b469 | aliguori | goto fail;
|
366 | c163b5ca | lirans@il.ibm.com | |
367 | 7f79dd28 | Paolo Bonzini | if(mode[0] == 'w') { |
368 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, file_put_buffer, NULL, stdio_fclose,
|
369 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
370 | 7f79dd28 | Paolo Bonzini | } else {
|
371 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, NULL, file_get_buffer, stdio_fclose,
|
372 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
373 | 7f79dd28 | Paolo Bonzini | } |
374 | 7f79dd28 | Paolo Bonzini | return s->file;
|
375 | a672b469 | aliguori | fail:
|
376 | a672b469 | aliguori | qemu_free(s); |
377 | a672b469 | aliguori | return NULL; |
378 | a672b469 | aliguori | } |
379 | a672b469 | aliguori | |
380 | 178e08a5 | aliguori | static int block_put_buffer(void *opaque, const uint8_t *buf, |
381 | a672b469 | aliguori | int64_t pos, int size)
|
382 | a672b469 | aliguori | { |
383 | 45566e9c | Christoph Hellwig | bdrv_save_vmstate(opaque, buf, pos, size); |
384 | a672b469 | aliguori | return size;
|
385 | a672b469 | aliguori | } |
386 | a672b469 | aliguori | |
387 | 178e08a5 | aliguori | static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
388 | a672b469 | aliguori | { |
389 | 45566e9c | Christoph Hellwig | return bdrv_load_vmstate(opaque, buf, pos, size);
|
390 | a672b469 | aliguori | } |
391 | a672b469 | aliguori | |
392 | a672b469 | aliguori | static int bdrv_fclose(void *opaque) |
393 | a672b469 | aliguori | { |
394 | a672b469 | aliguori | return 0; |
395 | a672b469 | aliguori | } |
396 | a672b469 | aliguori | |
397 | 45566e9c | Christoph Hellwig | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable) |
398 | a672b469 | aliguori | { |
399 | a672b469 | aliguori | if (is_writable)
|
400 | c163b5ca | lirans@il.ibm.com | return qemu_fopen_ops(bs, block_put_buffer, NULL, bdrv_fclose, |
401 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
402 | c163b5ca | lirans@il.ibm.com | return qemu_fopen_ops(bs, NULL, block_get_buffer, bdrv_fclose, NULL, NULL, NULL); |
403 | a672b469 | aliguori | } |
404 | a672b469 | aliguori | |
405 | a672b469 | aliguori | QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer,
|
406 | a672b469 | aliguori | QEMUFileGetBufferFunc *get_buffer, |
407 | a672b469 | aliguori | QEMUFileCloseFunc *close, |
408 | 19629537 | Glauber Costa | QEMUFileRateLimit *rate_limit, |
409 | c163b5ca | lirans@il.ibm.com | QEMUFileSetRateLimit *set_rate_limit, |
410 | c163b5ca | lirans@il.ibm.com | QEMUFileGetRateLimit *get_rate_limit) |
411 | a672b469 | aliguori | { |
412 | a672b469 | aliguori | QEMUFile *f; |
413 | a672b469 | aliguori | |
414 | a672b469 | aliguori | f = qemu_mallocz(sizeof(QEMUFile));
|
415 | a672b469 | aliguori | |
416 | a672b469 | aliguori | f->opaque = opaque; |
417 | a672b469 | aliguori | f->put_buffer = put_buffer; |
418 | a672b469 | aliguori | f->get_buffer = get_buffer; |
419 | a672b469 | aliguori | f->close = close; |
420 | a672b469 | aliguori | f->rate_limit = rate_limit; |
421 | 19629537 | Glauber Costa | f->set_rate_limit = set_rate_limit; |
422 | c163b5ca | lirans@il.ibm.com | f->get_rate_limit = get_rate_limit; |
423 | a672b469 | aliguori | f->is_write = 0;
|
424 | a672b469 | aliguori | |
425 | a672b469 | aliguori | return f;
|
426 | a672b469 | aliguori | } |
427 | a672b469 | aliguori | |
428 | a672b469 | aliguori | int qemu_file_has_error(QEMUFile *f)
|
429 | a672b469 | aliguori | { |
430 | a672b469 | aliguori | return f->has_error;
|
431 | a672b469 | aliguori | } |
432 | a672b469 | aliguori | |
433 | 4dabe248 | aliguori | void qemu_file_set_error(QEMUFile *f)
|
434 | 4dabe248 | aliguori | { |
435 | 4dabe248 | aliguori | f->has_error = 1;
|
436 | 4dabe248 | aliguori | } |
437 | 4dabe248 | aliguori | |
438 | a672b469 | aliguori | void qemu_fflush(QEMUFile *f)
|
439 | a672b469 | aliguori | { |
440 | a672b469 | aliguori | if (!f->put_buffer)
|
441 | a672b469 | aliguori | return;
|
442 | a672b469 | aliguori | |
443 | a672b469 | aliguori | if (f->is_write && f->buf_index > 0) { |
444 | a672b469 | aliguori | int len;
|
445 | a672b469 | aliguori | |
446 | a672b469 | aliguori | len = f->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index); |
447 | a672b469 | aliguori | if (len > 0) |
448 | a672b469 | aliguori | f->buf_offset += f->buf_index; |
449 | a672b469 | aliguori | else
|
450 | a672b469 | aliguori | f->has_error = 1;
|
451 | a672b469 | aliguori | f->buf_index = 0;
|
452 | a672b469 | aliguori | } |
453 | a672b469 | aliguori | } |
454 | a672b469 | aliguori | |
455 | a672b469 | aliguori | static void qemu_fill_buffer(QEMUFile *f) |
456 | a672b469 | aliguori | { |
457 | a672b469 | aliguori | int len;
|
458 | a672b469 | aliguori | |
459 | a672b469 | aliguori | if (!f->get_buffer)
|
460 | a672b469 | aliguori | return;
|
461 | a672b469 | aliguori | |
462 | a672b469 | aliguori | if (f->is_write)
|
463 | a672b469 | aliguori | abort(); |
464 | a672b469 | aliguori | |
465 | a672b469 | aliguori | len = f->get_buffer(f->opaque, f->buf, f->buf_offset, IO_BUF_SIZE); |
466 | a672b469 | aliguori | if (len > 0) { |
467 | a672b469 | aliguori | f->buf_index = 0;
|
468 | a672b469 | aliguori | f->buf_size = len; |
469 | a672b469 | aliguori | f->buf_offset += len; |
470 | a672b469 | aliguori | } else if (len != -EAGAIN) |
471 | a672b469 | aliguori | f->has_error = 1;
|
472 | a672b469 | aliguori | } |
473 | a672b469 | aliguori | |
474 | a672b469 | aliguori | int qemu_fclose(QEMUFile *f)
|
475 | a672b469 | aliguori | { |
476 | a672b469 | aliguori | int ret = 0; |
477 | a672b469 | aliguori | qemu_fflush(f); |
478 | a672b469 | aliguori | if (f->close)
|
479 | a672b469 | aliguori | ret = f->close(f->opaque); |
480 | a672b469 | aliguori | qemu_free(f); |
481 | a672b469 | aliguori | return ret;
|
482 | a672b469 | aliguori | } |
483 | a672b469 | aliguori | |
484 | a672b469 | aliguori | void qemu_file_put_notify(QEMUFile *f)
|
485 | a672b469 | aliguori | { |
486 | a672b469 | aliguori | f->put_buffer(f->opaque, NULL, 0, 0); |
487 | a672b469 | aliguori | } |
488 | a672b469 | aliguori | |
489 | a672b469 | aliguori | void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size) |
490 | a672b469 | aliguori | { |
491 | a672b469 | aliguori | int l;
|
492 | a672b469 | aliguori | |
493 | a672b469 | aliguori | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { |
494 | a672b469 | aliguori | fprintf(stderr, |
495 | a672b469 | aliguori | "Attempted to write to buffer while read buffer is not empty\n");
|
496 | a672b469 | aliguori | abort(); |
497 | a672b469 | aliguori | } |
498 | a672b469 | aliguori | |
499 | a672b469 | aliguori | while (!f->has_error && size > 0) { |
500 | a672b469 | aliguori | l = IO_BUF_SIZE - f->buf_index; |
501 | a672b469 | aliguori | if (l > size)
|
502 | a672b469 | aliguori | l = size; |
503 | a672b469 | aliguori | memcpy(f->buf + f->buf_index, buf, l); |
504 | a672b469 | aliguori | f->is_write = 1;
|
505 | a672b469 | aliguori | f->buf_index += l; |
506 | a672b469 | aliguori | buf += l; |
507 | a672b469 | aliguori | size -= l; |
508 | a672b469 | aliguori | if (f->buf_index >= IO_BUF_SIZE)
|
509 | a672b469 | aliguori | qemu_fflush(f); |
510 | a672b469 | aliguori | } |
511 | a672b469 | aliguori | } |
512 | a672b469 | aliguori | |
513 | a672b469 | aliguori | void qemu_put_byte(QEMUFile *f, int v) |
514 | a672b469 | aliguori | { |
515 | a672b469 | aliguori | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { |
516 | a672b469 | aliguori | fprintf(stderr, |
517 | a672b469 | aliguori | "Attempted to write to buffer while read buffer is not empty\n");
|
518 | a672b469 | aliguori | abort(); |
519 | a672b469 | aliguori | } |
520 | a672b469 | aliguori | |
521 | a672b469 | aliguori | f->buf[f->buf_index++] = v; |
522 | a672b469 | aliguori | f->is_write = 1;
|
523 | a672b469 | aliguori | if (f->buf_index >= IO_BUF_SIZE)
|
524 | a672b469 | aliguori | qemu_fflush(f); |
525 | a672b469 | aliguori | } |
526 | a672b469 | aliguori | |
527 | a672b469 | aliguori | int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size1) |
528 | a672b469 | aliguori | { |
529 | a672b469 | aliguori | int size, l;
|
530 | a672b469 | aliguori | |
531 | a672b469 | aliguori | if (f->is_write)
|
532 | a672b469 | aliguori | abort(); |
533 | a672b469 | aliguori | |
534 | a672b469 | aliguori | size = size1; |
535 | a672b469 | aliguori | while (size > 0) { |
536 | a672b469 | aliguori | l = f->buf_size - f->buf_index; |
537 | a672b469 | aliguori | if (l == 0) { |
538 | a672b469 | aliguori | qemu_fill_buffer(f); |
539 | a672b469 | aliguori | l = f->buf_size - f->buf_index; |
540 | a672b469 | aliguori | if (l == 0) |
541 | a672b469 | aliguori | break;
|
542 | a672b469 | aliguori | } |
543 | a672b469 | aliguori | if (l > size)
|
544 | a672b469 | aliguori | l = size; |
545 | a672b469 | aliguori | memcpy(buf, f->buf + f->buf_index, l); |
546 | a672b469 | aliguori | f->buf_index += l; |
547 | a672b469 | aliguori | buf += l; |
548 | a672b469 | aliguori | size -= l; |
549 | a672b469 | aliguori | } |
550 | a672b469 | aliguori | return size1 - size;
|
551 | a672b469 | aliguori | } |
552 | a672b469 | aliguori | |
553 | 811814bd | Juan Quintela | static int qemu_peek_byte(QEMUFile *f) |
554 | 811814bd | Juan Quintela | { |
555 | 811814bd | Juan Quintela | if (f->is_write)
|
556 | 811814bd | Juan Quintela | abort(); |
557 | 811814bd | Juan Quintela | |
558 | 811814bd | Juan Quintela | if (f->buf_index >= f->buf_size) {
|
559 | 811814bd | Juan Quintela | qemu_fill_buffer(f); |
560 | 811814bd | Juan Quintela | if (f->buf_index >= f->buf_size)
|
561 | 811814bd | Juan Quintela | return 0; |
562 | 811814bd | Juan Quintela | } |
563 | 811814bd | Juan Quintela | return f->buf[f->buf_index];
|
564 | 811814bd | Juan Quintela | } |
565 | 811814bd | Juan Quintela | |
566 | a672b469 | aliguori | int qemu_get_byte(QEMUFile *f)
|
567 | a672b469 | aliguori | { |
568 | a672b469 | aliguori | if (f->is_write)
|
569 | a672b469 | aliguori | abort(); |
570 | a672b469 | aliguori | |
571 | a672b469 | aliguori | if (f->buf_index >= f->buf_size) {
|
572 | a672b469 | aliguori | qemu_fill_buffer(f); |
573 | a672b469 | aliguori | if (f->buf_index >= f->buf_size)
|
574 | a672b469 | aliguori | return 0; |
575 | a672b469 | aliguori | } |
576 | a672b469 | aliguori | return f->buf[f->buf_index++];
|
577 | a672b469 | aliguori | } |
578 | a672b469 | aliguori | |
579 | a672b469 | aliguori | int64_t qemu_ftell(QEMUFile *f) |
580 | a672b469 | aliguori | { |
581 | a672b469 | aliguori | return f->buf_offset - f->buf_size + f->buf_index;
|
582 | a672b469 | aliguori | } |
583 | a672b469 | aliguori | |
584 | a672b469 | aliguori | int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence)
|
585 | a672b469 | aliguori | { |
586 | a672b469 | aliguori | if (whence == SEEK_SET) {
|
587 | a672b469 | aliguori | /* nothing to do */
|
588 | a672b469 | aliguori | } else if (whence == SEEK_CUR) { |
589 | a672b469 | aliguori | pos += qemu_ftell(f); |
590 | a672b469 | aliguori | } else {
|
591 | a672b469 | aliguori | /* SEEK_END not supported */
|
592 | a672b469 | aliguori | return -1; |
593 | a672b469 | aliguori | } |
594 | a672b469 | aliguori | if (f->put_buffer) {
|
595 | a672b469 | aliguori | qemu_fflush(f); |
596 | a672b469 | aliguori | f->buf_offset = pos; |
597 | a672b469 | aliguori | } else {
|
598 | a672b469 | aliguori | f->buf_offset = pos; |
599 | a672b469 | aliguori | f->buf_index = 0;
|
600 | a672b469 | aliguori | f->buf_size = 0;
|
601 | a672b469 | aliguori | } |
602 | a672b469 | aliguori | return pos;
|
603 | a672b469 | aliguori | } |
604 | a672b469 | aliguori | |
605 | a672b469 | aliguori | int qemu_file_rate_limit(QEMUFile *f)
|
606 | a672b469 | aliguori | { |
607 | a672b469 | aliguori | if (f->rate_limit)
|
608 | a672b469 | aliguori | return f->rate_limit(f->opaque);
|
609 | a672b469 | aliguori | |
610 | a672b469 | aliguori | return 0; |
611 | a672b469 | aliguori | } |
612 | a672b469 | aliguori | |
613 | 3d002df3 | Michael S. Tsirkin | int64_t qemu_file_get_rate_limit(QEMUFile *f) |
614 | c163b5ca | lirans@il.ibm.com | { |
615 | c163b5ca | lirans@il.ibm.com | if (f->get_rate_limit)
|
616 | c163b5ca | lirans@il.ibm.com | return f->get_rate_limit(f->opaque);
|
617 | c163b5ca | lirans@il.ibm.com | |
618 | c163b5ca | lirans@il.ibm.com | return 0; |
619 | c163b5ca | lirans@il.ibm.com | } |
620 | c163b5ca | lirans@il.ibm.com | |
621 | 3d002df3 | Michael S. Tsirkin | int64_t qemu_file_set_rate_limit(QEMUFile *f, int64_t new_rate) |
622 | 19629537 | Glauber Costa | { |
623 | 0bb05eaf | Glauber Costa | /* any failed or completed migration keeps its state to allow probing of
|
624 | 0bb05eaf | Glauber Costa | * migration data, but has no associated file anymore */
|
625 | 0bb05eaf | Glauber Costa | if (f && f->set_rate_limit)
|
626 | 19629537 | Glauber Costa | return f->set_rate_limit(f->opaque, new_rate);
|
627 | 19629537 | Glauber Costa | |
628 | 19629537 | Glauber Costa | return 0; |
629 | 19629537 | Glauber Costa | } |
630 | 19629537 | Glauber Costa | |
631 | a672b469 | aliguori | void qemu_put_be16(QEMUFile *f, unsigned int v) |
632 | a672b469 | aliguori | { |
633 | a672b469 | aliguori | qemu_put_byte(f, v >> 8);
|
634 | a672b469 | aliguori | qemu_put_byte(f, v); |
635 | a672b469 | aliguori | } |
636 | a672b469 | aliguori | |
637 | a672b469 | aliguori | void qemu_put_be32(QEMUFile *f, unsigned int v) |
638 | a672b469 | aliguori | { |
639 | a672b469 | aliguori | qemu_put_byte(f, v >> 24);
|
640 | a672b469 | aliguori | qemu_put_byte(f, v >> 16);
|
641 | a672b469 | aliguori | qemu_put_byte(f, v >> 8);
|
642 | a672b469 | aliguori | qemu_put_byte(f, v); |
643 | a672b469 | aliguori | } |
644 | a672b469 | aliguori | |
645 | a672b469 | aliguori | void qemu_put_be64(QEMUFile *f, uint64_t v)
|
646 | a672b469 | aliguori | { |
647 | a672b469 | aliguori | qemu_put_be32(f, v >> 32);
|
648 | a672b469 | aliguori | qemu_put_be32(f, v); |
649 | a672b469 | aliguori | } |
650 | a672b469 | aliguori | |
651 | a672b469 | aliguori | unsigned int qemu_get_be16(QEMUFile *f) |
652 | a672b469 | aliguori | { |
653 | a672b469 | aliguori | unsigned int v; |
654 | a672b469 | aliguori | v = qemu_get_byte(f) << 8;
|
655 | a672b469 | aliguori | v |= qemu_get_byte(f); |
656 | a672b469 | aliguori | return v;
|
657 | a672b469 | aliguori | } |
658 | a672b469 | aliguori | |
659 | a672b469 | aliguori | unsigned int qemu_get_be32(QEMUFile *f) |
660 | a672b469 | aliguori | { |
661 | a672b469 | aliguori | unsigned int v; |
662 | a672b469 | aliguori | v = qemu_get_byte(f) << 24;
|
663 | a672b469 | aliguori | v |= qemu_get_byte(f) << 16;
|
664 | a672b469 | aliguori | v |= qemu_get_byte(f) << 8;
|
665 | a672b469 | aliguori | v |= qemu_get_byte(f); |
666 | a672b469 | aliguori | return v;
|
667 | a672b469 | aliguori | } |
668 | a672b469 | aliguori | |
669 | a672b469 | aliguori | uint64_t qemu_get_be64(QEMUFile *f) |
670 | a672b469 | aliguori | { |
671 | a672b469 | aliguori | uint64_t v; |
672 | a672b469 | aliguori | v = (uint64_t)qemu_get_be32(f) << 32;
|
673 | a672b469 | aliguori | v |= qemu_get_be32(f); |
674 | a672b469 | aliguori | return v;
|
675 | a672b469 | aliguori | } |
676 | a672b469 | aliguori | |
677 | cdae5cfb | Gerd Hoffmann | /* bool */
|
678 | cdae5cfb | Gerd Hoffmann | |
679 | cdae5cfb | Gerd Hoffmann | static int get_bool(QEMUFile *f, void *pv, size_t size) |
680 | cdae5cfb | Gerd Hoffmann | { |
681 | cdae5cfb | Gerd Hoffmann | bool *v = pv;
|
682 | cdae5cfb | Gerd Hoffmann | *v = qemu_get_byte(f); |
683 | cdae5cfb | Gerd Hoffmann | return 0; |
684 | cdae5cfb | Gerd Hoffmann | } |
685 | cdae5cfb | Gerd Hoffmann | |
686 | cdae5cfb | Gerd Hoffmann | static void put_bool(QEMUFile *f, void *pv, size_t size) |
687 | cdae5cfb | Gerd Hoffmann | { |
688 | cdae5cfb | Gerd Hoffmann | bool *v = pv;
|
689 | cdae5cfb | Gerd Hoffmann | qemu_put_byte(f, *v); |
690 | cdae5cfb | Gerd Hoffmann | } |
691 | cdae5cfb | Gerd Hoffmann | |
692 | cdae5cfb | Gerd Hoffmann | const VMStateInfo vmstate_info_bool = {
|
693 | cdae5cfb | Gerd Hoffmann | .name = "bool",
|
694 | cdae5cfb | Gerd Hoffmann | .get = get_bool, |
695 | cdae5cfb | Gerd Hoffmann | .put = put_bool, |
696 | cdae5cfb | Gerd Hoffmann | }; |
697 | cdae5cfb | Gerd Hoffmann | |
698 | 9ed7d6ae | Juan Quintela | /* 8 bit int */
|
699 | 9ed7d6ae | Juan Quintela | |
700 | 9ed7d6ae | Juan Quintela | static int get_int8(QEMUFile *f, void *pv, size_t size) |
701 | 9ed7d6ae | Juan Quintela | { |
702 | 9ed7d6ae | Juan Quintela | int8_t *v = pv; |
703 | 9ed7d6ae | Juan Quintela | qemu_get_s8s(f, v); |
704 | 9ed7d6ae | Juan Quintela | return 0; |
705 | 9ed7d6ae | Juan Quintela | } |
706 | 9ed7d6ae | Juan Quintela | |
707 | 84e2e3eb | Juan Quintela | static void put_int8(QEMUFile *f, void *pv, size_t size) |
708 | 9ed7d6ae | Juan Quintela | { |
709 | 84e2e3eb | Juan Quintela | int8_t *v = pv; |
710 | 9ed7d6ae | Juan Quintela | qemu_put_s8s(f, v); |
711 | 9ed7d6ae | Juan Quintela | } |
712 | 9ed7d6ae | Juan Quintela | |
713 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int8 = {
|
714 | 9ed7d6ae | Juan Quintela | .name = "int8",
|
715 | 9ed7d6ae | Juan Quintela | .get = get_int8, |
716 | 9ed7d6ae | Juan Quintela | .put = put_int8, |
717 | 9ed7d6ae | Juan Quintela | }; |
718 | 9ed7d6ae | Juan Quintela | |
719 | 9ed7d6ae | Juan Quintela | /* 16 bit int */
|
720 | 9ed7d6ae | Juan Quintela | |
721 | 9ed7d6ae | Juan Quintela | static int get_int16(QEMUFile *f, void *pv, size_t size) |
722 | 9ed7d6ae | Juan Quintela | { |
723 | 9ed7d6ae | Juan Quintela | int16_t *v = pv; |
724 | 9ed7d6ae | Juan Quintela | qemu_get_sbe16s(f, v); |
725 | 9ed7d6ae | Juan Quintela | return 0; |
726 | 9ed7d6ae | Juan Quintela | } |
727 | 9ed7d6ae | Juan Quintela | |
728 | 84e2e3eb | Juan Quintela | static void put_int16(QEMUFile *f, void *pv, size_t size) |
729 | 9ed7d6ae | Juan Quintela | { |
730 | 84e2e3eb | Juan Quintela | int16_t *v = pv; |
731 | 9ed7d6ae | Juan Quintela | qemu_put_sbe16s(f, v); |
732 | 9ed7d6ae | Juan Quintela | } |
733 | 9ed7d6ae | Juan Quintela | |
734 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int16 = {
|
735 | 9ed7d6ae | Juan Quintela | .name = "int16",
|
736 | 9ed7d6ae | Juan Quintela | .get = get_int16, |
737 | 9ed7d6ae | Juan Quintela | .put = put_int16, |
738 | 9ed7d6ae | Juan Quintela | }; |
739 | 9ed7d6ae | Juan Quintela | |
740 | 9ed7d6ae | Juan Quintela | /* 32 bit int */
|
741 | 9ed7d6ae | Juan Quintela | |
742 | 9ed7d6ae | Juan Quintela | static int get_int32(QEMUFile *f, void *pv, size_t size) |
743 | 9ed7d6ae | Juan Quintela | { |
744 | 9ed7d6ae | Juan Quintela | int32_t *v = pv; |
745 | 9ed7d6ae | Juan Quintela | qemu_get_sbe32s(f, v); |
746 | 9ed7d6ae | Juan Quintela | return 0; |
747 | 9ed7d6ae | Juan Quintela | } |
748 | 9ed7d6ae | Juan Quintela | |
749 | 84e2e3eb | Juan Quintela | static void put_int32(QEMUFile *f, void *pv, size_t size) |
750 | 9ed7d6ae | Juan Quintela | { |
751 | 84e2e3eb | Juan Quintela | int32_t *v = pv; |
752 | 9ed7d6ae | Juan Quintela | qemu_put_sbe32s(f, v); |
753 | 9ed7d6ae | Juan Quintela | } |
754 | 9ed7d6ae | Juan Quintela | |
755 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int32 = {
|
756 | 9ed7d6ae | Juan Quintela | .name = "int32",
|
757 | 9ed7d6ae | Juan Quintela | .get = get_int32, |
758 | 9ed7d6ae | Juan Quintela | .put = put_int32, |
759 | 9ed7d6ae | Juan Quintela | }; |
760 | 9ed7d6ae | Juan Quintela | |
761 | 82501660 | Juan Quintela | /* 32 bit int. See that the received value is the same than the one
|
762 | 82501660 | Juan Quintela | in the field */
|
763 | 82501660 | Juan Quintela | |
764 | 82501660 | Juan Quintela | static int get_int32_equal(QEMUFile *f, void *pv, size_t size) |
765 | 82501660 | Juan Quintela | { |
766 | 82501660 | Juan Quintela | int32_t *v = pv; |
767 | 82501660 | Juan Quintela | int32_t v2; |
768 | 82501660 | Juan Quintela | qemu_get_sbe32s(f, &v2); |
769 | 82501660 | Juan Quintela | |
770 | 82501660 | Juan Quintela | if (*v == v2)
|
771 | 82501660 | Juan Quintela | return 0; |
772 | 82501660 | Juan Quintela | return -EINVAL;
|
773 | 82501660 | Juan Quintela | } |
774 | 82501660 | Juan Quintela | |
775 | 82501660 | Juan Quintela | const VMStateInfo vmstate_info_int32_equal = {
|
776 | 82501660 | Juan Quintela | .name = "int32 equal",
|
777 | 82501660 | Juan Quintela | .get = get_int32_equal, |
778 | 82501660 | Juan Quintela | .put = put_int32, |
779 | 82501660 | Juan Quintela | }; |
780 | 82501660 | Juan Quintela | |
781 | 0a031e0a | Juan Quintela | /* 32 bit int. See that the received value is the less or the same
|
782 | 0a031e0a | Juan Quintela | than the one in the field */
|
783 | 0a031e0a | Juan Quintela | |
784 | 0a031e0a | Juan Quintela | static int get_int32_le(QEMUFile *f, void *pv, size_t size) |
785 | 0a031e0a | Juan Quintela | { |
786 | 0a031e0a | Juan Quintela | int32_t *old = pv; |
787 | 0a031e0a | Juan Quintela | int32_t new; |
788 | 0a031e0a | Juan Quintela | qemu_get_sbe32s(f, &new); |
789 | 0a031e0a | Juan Quintela | |
790 | 0a031e0a | Juan Quintela | if (*old <= new)
|
791 | 0a031e0a | Juan Quintela | return 0; |
792 | 0a031e0a | Juan Quintela | return -EINVAL;
|
793 | 0a031e0a | Juan Quintela | } |
794 | 0a031e0a | Juan Quintela | |
795 | 0a031e0a | Juan Quintela | const VMStateInfo vmstate_info_int32_le = {
|
796 | 0a031e0a | Juan Quintela | .name = "int32 equal",
|
797 | 0a031e0a | Juan Quintela | .get = get_int32_le, |
798 | 0a031e0a | Juan Quintela | .put = put_int32, |
799 | 0a031e0a | Juan Quintela | }; |
800 | 0a031e0a | Juan Quintela | |
801 | 9ed7d6ae | Juan Quintela | /* 64 bit int */
|
802 | 9ed7d6ae | Juan Quintela | |
803 | 9ed7d6ae | Juan Quintela | static int get_int64(QEMUFile *f, void *pv, size_t size) |
804 | 9ed7d6ae | Juan Quintela | { |
805 | 9ed7d6ae | Juan Quintela | int64_t *v = pv; |
806 | 9ed7d6ae | Juan Quintela | qemu_get_sbe64s(f, v); |
807 | 9ed7d6ae | Juan Quintela | return 0; |
808 | 9ed7d6ae | Juan Quintela | } |
809 | 9ed7d6ae | Juan Quintela | |
810 | 84e2e3eb | Juan Quintela | static void put_int64(QEMUFile *f, void *pv, size_t size) |
811 | 9ed7d6ae | Juan Quintela | { |
812 | 84e2e3eb | Juan Quintela | int64_t *v = pv; |
813 | 9ed7d6ae | Juan Quintela | qemu_put_sbe64s(f, v); |
814 | 9ed7d6ae | Juan Quintela | } |
815 | 9ed7d6ae | Juan Quintela | |
816 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int64 = {
|
817 | 9ed7d6ae | Juan Quintela | .name = "int64",
|
818 | 9ed7d6ae | Juan Quintela | .get = get_int64, |
819 | 9ed7d6ae | Juan Quintela | .put = put_int64, |
820 | 9ed7d6ae | Juan Quintela | }; |
821 | 9ed7d6ae | Juan Quintela | |
822 | 9ed7d6ae | Juan Quintela | /* 8 bit unsigned int */
|
823 | 9ed7d6ae | Juan Quintela | |
824 | 9ed7d6ae | Juan Quintela | static int get_uint8(QEMUFile *f, void *pv, size_t size) |
825 | 9ed7d6ae | Juan Quintela | { |
826 | 9ed7d6ae | Juan Quintela | uint8_t *v = pv; |
827 | 9ed7d6ae | Juan Quintela | qemu_get_8s(f, v); |
828 | 9ed7d6ae | Juan Quintela | return 0; |
829 | 9ed7d6ae | Juan Quintela | } |
830 | 9ed7d6ae | Juan Quintela | |
831 | 84e2e3eb | Juan Quintela | static void put_uint8(QEMUFile *f, void *pv, size_t size) |
832 | 9ed7d6ae | Juan Quintela | { |
833 | 84e2e3eb | Juan Quintela | uint8_t *v = pv; |
834 | 9ed7d6ae | Juan Quintela | qemu_put_8s(f, v); |
835 | 9ed7d6ae | Juan Quintela | } |
836 | 9ed7d6ae | Juan Quintela | |
837 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint8 = {
|
838 | 9ed7d6ae | Juan Quintela | .name = "uint8",
|
839 | 9ed7d6ae | Juan Quintela | .get = get_uint8, |
840 | 9ed7d6ae | Juan Quintela | .put = put_uint8, |
841 | 9ed7d6ae | Juan Quintela | }; |
842 | 9ed7d6ae | Juan Quintela | |
843 | 9ed7d6ae | Juan Quintela | /* 16 bit unsigned int */
|
844 | 9ed7d6ae | Juan Quintela | |
845 | 9ed7d6ae | Juan Quintela | static int get_uint16(QEMUFile *f, void *pv, size_t size) |
846 | 9ed7d6ae | Juan Quintela | { |
847 | 9ed7d6ae | Juan Quintela | uint16_t *v = pv; |
848 | 9ed7d6ae | Juan Quintela | qemu_get_be16s(f, v); |
849 | 9ed7d6ae | Juan Quintela | return 0; |
850 | 9ed7d6ae | Juan Quintela | } |
851 | 9ed7d6ae | Juan Quintela | |
852 | 84e2e3eb | Juan Quintela | static void put_uint16(QEMUFile *f, void *pv, size_t size) |
853 | 9ed7d6ae | Juan Quintela | { |
854 | 84e2e3eb | Juan Quintela | uint16_t *v = pv; |
855 | 9ed7d6ae | Juan Quintela | qemu_put_be16s(f, v); |
856 | 9ed7d6ae | Juan Quintela | } |
857 | 9ed7d6ae | Juan Quintela | |
858 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint16 = {
|
859 | 9ed7d6ae | Juan Quintela | .name = "uint16",
|
860 | 9ed7d6ae | Juan Quintela | .get = get_uint16, |
861 | 9ed7d6ae | Juan Quintela | .put = put_uint16, |
862 | 9ed7d6ae | Juan Quintela | }; |
863 | 9ed7d6ae | Juan Quintela | |
864 | 9ed7d6ae | Juan Quintela | /* 32 bit unsigned int */
|
865 | 9ed7d6ae | Juan Quintela | |
866 | 9ed7d6ae | Juan Quintela | static int get_uint32(QEMUFile *f, void *pv, size_t size) |
867 | 9ed7d6ae | Juan Quintela | { |
868 | 9ed7d6ae | Juan Quintela | uint32_t *v = pv; |
869 | 9ed7d6ae | Juan Quintela | qemu_get_be32s(f, v); |
870 | 9ed7d6ae | Juan Quintela | return 0; |
871 | 9ed7d6ae | Juan Quintela | } |
872 | 9ed7d6ae | Juan Quintela | |
873 | 84e2e3eb | Juan Quintela | static void put_uint32(QEMUFile *f, void *pv, size_t size) |
874 | 9ed7d6ae | Juan Quintela | { |
875 | 84e2e3eb | Juan Quintela | uint32_t *v = pv; |
876 | 9ed7d6ae | Juan Quintela | qemu_put_be32s(f, v); |
877 | 9ed7d6ae | Juan Quintela | } |
878 | 9ed7d6ae | Juan Quintela | |
879 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint32 = {
|
880 | 9ed7d6ae | Juan Quintela | .name = "uint32",
|
881 | 9ed7d6ae | Juan Quintela | .get = get_uint32, |
882 | 9ed7d6ae | Juan Quintela | .put = put_uint32, |
883 | 9ed7d6ae | Juan Quintela | }; |
884 | 9ed7d6ae | Juan Quintela | |
885 | 9122a8fe | Juan Quintela | /* 32 bit uint. See that the received value is the same than the one
|
886 | 9122a8fe | Juan Quintela | in the field */
|
887 | 9122a8fe | Juan Quintela | |
888 | 9122a8fe | Juan Quintela | static int get_uint32_equal(QEMUFile *f, void *pv, size_t size) |
889 | 9122a8fe | Juan Quintela | { |
890 | 9122a8fe | Juan Quintela | uint32_t *v = pv; |
891 | 9122a8fe | Juan Quintela | uint32_t v2; |
892 | 9122a8fe | Juan Quintela | qemu_get_be32s(f, &v2); |
893 | 9122a8fe | Juan Quintela | |
894 | 9122a8fe | Juan Quintela | if (*v == v2) {
|
895 | 9122a8fe | Juan Quintela | return 0; |
896 | 9122a8fe | Juan Quintela | } |
897 | 9122a8fe | Juan Quintela | return -EINVAL;
|
898 | 9122a8fe | Juan Quintela | } |
899 | 9122a8fe | Juan Quintela | |
900 | 9122a8fe | Juan Quintela | const VMStateInfo vmstate_info_uint32_equal = {
|
901 | 9122a8fe | Juan Quintela | .name = "uint32 equal",
|
902 | 9122a8fe | Juan Quintela | .get = get_uint32_equal, |
903 | 9122a8fe | Juan Quintela | .put = put_uint32, |
904 | 9122a8fe | Juan Quintela | }; |
905 | 9122a8fe | Juan Quintela | |
906 | 9ed7d6ae | Juan Quintela | /* 64 bit unsigned int */
|
907 | 9ed7d6ae | Juan Quintela | |
908 | 9ed7d6ae | Juan Quintela | static int get_uint64(QEMUFile *f, void *pv, size_t size) |
909 | 9ed7d6ae | Juan Quintela | { |
910 | 9ed7d6ae | Juan Quintela | uint64_t *v = pv; |
911 | 9ed7d6ae | Juan Quintela | qemu_get_be64s(f, v); |
912 | 9ed7d6ae | Juan Quintela | return 0; |
913 | 9ed7d6ae | Juan Quintela | } |
914 | 9ed7d6ae | Juan Quintela | |
915 | 84e2e3eb | Juan Quintela | static void put_uint64(QEMUFile *f, void *pv, size_t size) |
916 | 9ed7d6ae | Juan Quintela | { |
917 | 84e2e3eb | Juan Quintela | uint64_t *v = pv; |
918 | 9ed7d6ae | Juan Quintela | qemu_put_be64s(f, v); |
919 | 9ed7d6ae | Juan Quintela | } |
920 | 9ed7d6ae | Juan Quintela | |
921 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint64 = {
|
922 | 9ed7d6ae | Juan Quintela | .name = "uint64",
|
923 | 9ed7d6ae | Juan Quintela | .get = get_uint64, |
924 | 9ed7d6ae | Juan Quintela | .put = put_uint64, |
925 | 9ed7d6ae | Juan Quintela | }; |
926 | 9ed7d6ae | Juan Quintela | |
927 | 80cd83e7 | Juan Quintela | /* 8 bit int. See that the received value is the same than the one
|
928 | 80cd83e7 | Juan Quintela | in the field */
|
929 | 80cd83e7 | Juan Quintela | |
930 | 80cd83e7 | Juan Quintela | static int get_uint8_equal(QEMUFile *f, void *pv, size_t size) |
931 | 80cd83e7 | Juan Quintela | { |
932 | 80cd83e7 | Juan Quintela | uint8_t *v = pv; |
933 | 80cd83e7 | Juan Quintela | uint8_t v2; |
934 | 80cd83e7 | Juan Quintela | qemu_get_8s(f, &v2); |
935 | 80cd83e7 | Juan Quintela | |
936 | 80cd83e7 | Juan Quintela | if (*v == v2)
|
937 | 80cd83e7 | Juan Quintela | return 0; |
938 | 80cd83e7 | Juan Quintela | return -EINVAL;
|
939 | 80cd83e7 | Juan Quintela | } |
940 | 80cd83e7 | Juan Quintela | |
941 | 80cd83e7 | Juan Quintela | const VMStateInfo vmstate_info_uint8_equal = {
|
942 | aa1cce69 | Juan Quintela | .name = "uint8 equal",
|
943 | 80cd83e7 | Juan Quintela | .get = get_uint8_equal, |
944 | 80cd83e7 | Juan Quintela | .put = put_uint8, |
945 | 80cd83e7 | Juan Quintela | }; |
946 | 80cd83e7 | Juan Quintela | |
947 | dc3b83a0 | Juan Quintela | /* 16 bit unsigned int int. See that the received value is the same than the one
|
948 | dc3b83a0 | Juan Quintela | in the field */
|
949 | dc3b83a0 | Juan Quintela | |
950 | dc3b83a0 | Juan Quintela | static int get_uint16_equal(QEMUFile *f, void *pv, size_t size) |
951 | dc3b83a0 | Juan Quintela | { |
952 | dc3b83a0 | Juan Quintela | uint16_t *v = pv; |
953 | dc3b83a0 | Juan Quintela | uint16_t v2; |
954 | dc3b83a0 | Juan Quintela | qemu_get_be16s(f, &v2); |
955 | dc3b83a0 | Juan Quintela | |
956 | dc3b83a0 | Juan Quintela | if (*v == v2)
|
957 | dc3b83a0 | Juan Quintela | return 0; |
958 | dc3b83a0 | Juan Quintela | return -EINVAL;
|
959 | dc3b83a0 | Juan Quintela | } |
960 | dc3b83a0 | Juan Quintela | |
961 | dc3b83a0 | Juan Quintela | const VMStateInfo vmstate_info_uint16_equal = {
|
962 | dc3b83a0 | Juan Quintela | .name = "uint16 equal",
|
963 | dc3b83a0 | Juan Quintela | .get = get_uint16_equal, |
964 | dc3b83a0 | Juan Quintela | .put = put_uint16, |
965 | dc3b83a0 | Juan Quintela | }; |
966 | dc3b83a0 | Juan Quintela | |
967 | dde0463b | Juan Quintela | /* timers */
|
968 | dde0463b | Juan Quintela | |
969 | dde0463b | Juan Quintela | static int get_timer(QEMUFile *f, void *pv, size_t size) |
970 | dde0463b | Juan Quintela | { |
971 | dde0463b | Juan Quintela | QEMUTimer *v = pv; |
972 | dde0463b | Juan Quintela | qemu_get_timer(f, v); |
973 | dde0463b | Juan Quintela | return 0; |
974 | dde0463b | Juan Quintela | } |
975 | dde0463b | Juan Quintela | |
976 | 84e2e3eb | Juan Quintela | static void put_timer(QEMUFile *f, void *pv, size_t size) |
977 | dde0463b | Juan Quintela | { |
978 | 84e2e3eb | Juan Quintela | QEMUTimer *v = pv; |
979 | dde0463b | Juan Quintela | qemu_put_timer(f, v); |
980 | dde0463b | Juan Quintela | } |
981 | dde0463b | Juan Quintela | |
982 | dde0463b | Juan Quintela | const VMStateInfo vmstate_info_timer = {
|
983 | dde0463b | Juan Quintela | .name = "timer",
|
984 | dde0463b | Juan Quintela | .get = get_timer, |
985 | dde0463b | Juan Quintela | .put = put_timer, |
986 | dde0463b | Juan Quintela | }; |
987 | dde0463b | Juan Quintela | |
988 | 6f67c50f | Juan Quintela | /* uint8_t buffers */
|
989 | 6f67c50f | Juan Quintela | |
990 | 6f67c50f | Juan Quintela | static int get_buffer(QEMUFile *f, void *pv, size_t size) |
991 | 6f67c50f | Juan Quintela | { |
992 | 6f67c50f | Juan Quintela | uint8_t *v = pv; |
993 | 6f67c50f | Juan Quintela | qemu_get_buffer(f, v, size); |
994 | 6f67c50f | Juan Quintela | return 0; |
995 | 6f67c50f | Juan Quintela | } |
996 | 6f67c50f | Juan Quintela | |
997 | 84e2e3eb | Juan Quintela | static void put_buffer(QEMUFile *f, void *pv, size_t size) |
998 | 6f67c50f | Juan Quintela | { |
999 | 84e2e3eb | Juan Quintela | uint8_t *v = pv; |
1000 | 6f67c50f | Juan Quintela | qemu_put_buffer(f, v, size); |
1001 | 6f67c50f | Juan Quintela | } |
1002 | 6f67c50f | Juan Quintela | |
1003 | 6f67c50f | Juan Quintela | const VMStateInfo vmstate_info_buffer = {
|
1004 | 6f67c50f | Juan Quintela | .name = "buffer",
|
1005 | 6f67c50f | Juan Quintela | .get = get_buffer, |
1006 | 6f67c50f | Juan Quintela | .put = put_buffer, |
1007 | 6f67c50f | Juan Quintela | }; |
1008 | 6f67c50f | Juan Quintela | |
1009 | 76507c75 | Juan Quintela | /* unused buffers: space that was used for some fields that are
|
1010 | 61cc8701 | Stefan Weil | not useful anymore */
|
1011 | 76507c75 | Juan Quintela | |
1012 | 76507c75 | Juan Quintela | static int get_unused_buffer(QEMUFile *f, void *pv, size_t size) |
1013 | 76507c75 | Juan Quintela | { |
1014 | 21174c34 | Jan Kiszka | uint8_t buf[1024];
|
1015 | 21174c34 | Jan Kiszka | int block_len;
|
1016 | 21174c34 | Jan Kiszka | |
1017 | 21174c34 | Jan Kiszka | while (size > 0) { |
1018 | 21174c34 | Jan Kiszka | block_len = MIN(sizeof(buf), size);
|
1019 | 21174c34 | Jan Kiszka | size -= block_len; |
1020 | 21174c34 | Jan Kiszka | qemu_get_buffer(f, buf, block_len); |
1021 | 21174c34 | Jan Kiszka | } |
1022 | 21174c34 | Jan Kiszka | return 0; |
1023 | 76507c75 | Juan Quintela | } |
1024 | 76507c75 | Juan Quintela | |
1025 | 76507c75 | Juan Quintela | static void put_unused_buffer(QEMUFile *f, void *pv, size_t size) |
1026 | 76507c75 | Juan Quintela | { |
1027 | 21174c34 | Jan Kiszka | static const uint8_t buf[1024]; |
1028 | 21174c34 | Jan Kiszka | int block_len;
|
1029 | 21174c34 | Jan Kiszka | |
1030 | 21174c34 | Jan Kiszka | while (size > 0) { |
1031 | 21174c34 | Jan Kiszka | block_len = MIN(sizeof(buf), size);
|
1032 | 21174c34 | Jan Kiszka | size -= block_len; |
1033 | 21174c34 | Jan Kiszka | qemu_put_buffer(f, buf, block_len); |
1034 | 21174c34 | Jan Kiszka | } |
1035 | 76507c75 | Juan Quintela | } |
1036 | 76507c75 | Juan Quintela | |
1037 | 76507c75 | Juan Quintela | const VMStateInfo vmstate_info_unused_buffer = {
|
1038 | 76507c75 | Juan Quintela | .name = "unused_buffer",
|
1039 | 76507c75 | Juan Quintela | .get = get_unused_buffer, |
1040 | 76507c75 | Juan Quintela | .put = put_unused_buffer, |
1041 | 76507c75 | Juan Quintela | }; |
1042 | 76507c75 | Juan Quintela | |
1043 | 7685ee6a | Alex Williamson | typedef struct CompatEntry { |
1044 | 7685ee6a | Alex Williamson | char idstr[256]; |
1045 | 7685ee6a | Alex Williamson | int instance_id;
|
1046 | 7685ee6a | Alex Williamson | } CompatEntry; |
1047 | 7685ee6a | Alex Williamson | |
1048 | a672b469 | aliguori | typedef struct SaveStateEntry { |
1049 | 72cf2d4f | Blue Swirl | QTAILQ_ENTRY(SaveStateEntry) entry; |
1050 | a672b469 | aliguori | char idstr[256]; |
1051 | a672b469 | aliguori | int instance_id;
|
1052 | 4d2ffa08 | Jan Kiszka | int alias_id;
|
1053 | a672b469 | aliguori | int version_id;
|
1054 | a672b469 | aliguori | int section_id;
|
1055 | c163b5ca | lirans@il.ibm.com | SaveSetParamsHandler *set_params; |
1056 | a672b469 | aliguori | SaveLiveStateHandler *save_live_state; |
1057 | a672b469 | aliguori | SaveStateHandler *save_state; |
1058 | a672b469 | aliguori | LoadStateHandler *load_state; |
1059 | 9ed7d6ae | Juan Quintela | const VMStateDescription *vmsd;
|
1060 | a672b469 | aliguori | void *opaque;
|
1061 | 7685ee6a | Alex Williamson | CompatEntry *compat; |
1062 | 24312968 | Cam Macdonell | int no_migrate;
|
1063 | a672b469 | aliguori | } SaveStateEntry; |
1064 | a672b469 | aliguori | |
1065 | c163b5ca | lirans@il.ibm.com | |
1066 | 72cf2d4f | Blue Swirl | static QTAILQ_HEAD(savevm_handlers, SaveStateEntry) savevm_handlers =
|
1067 | 72cf2d4f | Blue Swirl | QTAILQ_HEAD_INITIALIZER(savevm_handlers); |
1068 | 9ed7d6ae | Juan Quintela | static int global_section_id; |
1069 | a672b469 | aliguori | |
1070 | 8718e999 | Juan Quintela | static int calculate_new_instance_id(const char *idstr) |
1071 | 8718e999 | Juan Quintela | { |
1072 | 8718e999 | Juan Quintela | SaveStateEntry *se; |
1073 | 8718e999 | Juan Quintela | int instance_id = 0; |
1074 | 8718e999 | Juan Quintela | |
1075 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1076 | 8718e999 | Juan Quintela | if (strcmp(idstr, se->idstr) == 0 |
1077 | 8718e999 | Juan Quintela | && instance_id <= se->instance_id) { |
1078 | 8718e999 | Juan Quintela | instance_id = se->instance_id + 1;
|
1079 | 8718e999 | Juan Quintela | } |
1080 | 8718e999 | Juan Quintela | } |
1081 | 8718e999 | Juan Quintela | return instance_id;
|
1082 | 8718e999 | Juan Quintela | } |
1083 | 8718e999 | Juan Quintela | |
1084 | 7685ee6a | Alex Williamson | static int calculate_compat_instance_id(const char *idstr) |
1085 | 7685ee6a | Alex Williamson | { |
1086 | 7685ee6a | Alex Williamson | SaveStateEntry *se; |
1087 | 7685ee6a | Alex Williamson | int instance_id = 0; |
1088 | 7685ee6a | Alex Williamson | |
1089 | 7685ee6a | Alex Williamson | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1090 | 7685ee6a | Alex Williamson | if (!se->compat)
|
1091 | 7685ee6a | Alex Williamson | continue;
|
1092 | 7685ee6a | Alex Williamson | |
1093 | 7685ee6a | Alex Williamson | if (strcmp(idstr, se->compat->idstr) == 0 |
1094 | 7685ee6a | Alex Williamson | && instance_id <= se->compat->instance_id) { |
1095 | 7685ee6a | Alex Williamson | instance_id = se->compat->instance_id + 1;
|
1096 | 7685ee6a | Alex Williamson | } |
1097 | 7685ee6a | Alex Williamson | } |
1098 | 7685ee6a | Alex Williamson | return instance_id;
|
1099 | 7685ee6a | Alex Williamson | } |
1100 | 7685ee6a | Alex Williamson | |
1101 | a672b469 | aliguori | /* TODO: Individual devices generally have very little idea about the rest
|
1102 | a672b469 | aliguori | of the system, so instance_id should be removed/replaced.
|
1103 | a672b469 | aliguori | Meanwhile pass -1 as instance_id if you do not already have a clearly
|
1104 | a672b469 | aliguori | distinguishing id for all instances of your device class. */
|
1105 | 0be71e32 | Alex Williamson | int register_savevm_live(DeviceState *dev,
|
1106 | 0be71e32 | Alex Williamson | const char *idstr, |
1107 | a672b469 | aliguori | int instance_id,
|
1108 | a672b469 | aliguori | int version_id,
|
1109 | c163b5ca | lirans@il.ibm.com | SaveSetParamsHandler *set_params, |
1110 | a672b469 | aliguori | SaveLiveStateHandler *save_live_state, |
1111 | a672b469 | aliguori | SaveStateHandler *save_state, |
1112 | a672b469 | aliguori | LoadStateHandler *load_state, |
1113 | a672b469 | aliguori | void *opaque)
|
1114 | a672b469 | aliguori | { |
1115 | 8718e999 | Juan Quintela | SaveStateEntry *se; |
1116 | a672b469 | aliguori | |
1117 | c163b5ca | lirans@il.ibm.com | se = qemu_mallocz(sizeof(SaveStateEntry));
|
1118 | a672b469 | aliguori | se->version_id = version_id; |
1119 | a672b469 | aliguori | se->section_id = global_section_id++; |
1120 | c163b5ca | lirans@il.ibm.com | se->set_params = set_params; |
1121 | a672b469 | aliguori | se->save_live_state = save_live_state; |
1122 | a672b469 | aliguori | se->save_state = save_state; |
1123 | a672b469 | aliguori | se->load_state = load_state; |
1124 | a672b469 | aliguori | se->opaque = opaque; |
1125 | 9ed7d6ae | Juan Quintela | se->vmsd = NULL;
|
1126 | 24312968 | Cam Macdonell | se->no_migrate = 0;
|
1127 | a672b469 | aliguori | |
1128 | 7685ee6a | Alex Williamson | if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) {
|
1129 | 7685ee6a | Alex Williamson | char *id = dev->parent_bus->info->get_dev_path(dev);
|
1130 | 7685ee6a | Alex Williamson | if (id) {
|
1131 | 7685ee6a | Alex Williamson | pstrcpy(se->idstr, sizeof(se->idstr), id);
|
1132 | 7685ee6a | Alex Williamson | pstrcat(se->idstr, sizeof(se->idstr), "/"); |
1133 | 7685ee6a | Alex Williamson | qemu_free(id); |
1134 | 7685ee6a | Alex Williamson | |
1135 | 7685ee6a | Alex Williamson | se->compat = qemu_mallocz(sizeof(CompatEntry));
|
1136 | 7685ee6a | Alex Williamson | pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), idstr);
|
1137 | 7685ee6a | Alex Williamson | se->compat->instance_id = instance_id == -1 ?
|
1138 | 7685ee6a | Alex Williamson | calculate_compat_instance_id(idstr) : instance_id; |
1139 | 7685ee6a | Alex Williamson | instance_id = -1;
|
1140 | 7685ee6a | Alex Williamson | } |
1141 | 7685ee6a | Alex Williamson | } |
1142 | 7685ee6a | Alex Williamson | pstrcat(se->idstr, sizeof(se->idstr), idstr);
|
1143 | 7685ee6a | Alex Williamson | |
1144 | 8718e999 | Juan Quintela | if (instance_id == -1) { |
1145 | 7685ee6a | Alex Williamson | se->instance_id = calculate_new_instance_id(se->idstr); |
1146 | 8718e999 | Juan Quintela | } else {
|
1147 | 8718e999 | Juan Quintela | se->instance_id = instance_id; |
1148 | a672b469 | aliguori | } |
1149 | 7685ee6a | Alex Williamson | assert(!se->compat || se->instance_id == 0);
|
1150 | 8718e999 | Juan Quintela | /* add at the end of list */
|
1151 | 72cf2d4f | Blue Swirl | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
1152 | a672b469 | aliguori | return 0; |
1153 | a672b469 | aliguori | } |
1154 | a672b469 | aliguori | |
1155 | 0be71e32 | Alex Williamson | int register_savevm(DeviceState *dev,
|
1156 | 0be71e32 | Alex Williamson | const char *idstr, |
1157 | a672b469 | aliguori | int instance_id,
|
1158 | a672b469 | aliguori | int version_id,
|
1159 | a672b469 | aliguori | SaveStateHandler *save_state, |
1160 | a672b469 | aliguori | LoadStateHandler *load_state, |
1161 | a672b469 | aliguori | void *opaque)
|
1162 | a672b469 | aliguori | { |
1163 | 0be71e32 | Alex Williamson | return register_savevm_live(dev, idstr, instance_id, version_id,
|
1164 | c163b5ca | lirans@il.ibm.com | NULL, NULL, save_state, load_state, opaque); |
1165 | a672b469 | aliguori | } |
1166 | a672b469 | aliguori | |
1167 | 0be71e32 | Alex Williamson | void unregister_savevm(DeviceState *dev, const char *idstr, void *opaque) |
1168 | 41bd13af | aliguori | { |
1169 | 8718e999 | Juan Quintela | SaveStateEntry *se, *new_se; |
1170 | 7685ee6a | Alex Williamson | char id[256] = ""; |
1171 | 7685ee6a | Alex Williamson | |
1172 | 7685ee6a | Alex Williamson | if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) {
|
1173 | 7685ee6a | Alex Williamson | char *path = dev->parent_bus->info->get_dev_path(dev);
|
1174 | 7685ee6a | Alex Williamson | if (path) {
|
1175 | 7685ee6a | Alex Williamson | pstrcpy(id, sizeof(id), path);
|
1176 | 7685ee6a | Alex Williamson | pstrcat(id, sizeof(id), "/"); |
1177 | 7685ee6a | Alex Williamson | qemu_free(path); |
1178 | 7685ee6a | Alex Williamson | } |
1179 | 7685ee6a | Alex Williamson | } |
1180 | 7685ee6a | Alex Williamson | pstrcat(id, sizeof(id), idstr);
|
1181 | 41bd13af | aliguori | |
1182 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
1183 | 7685ee6a | Alex Williamson | if (strcmp(se->idstr, id) == 0 && se->opaque == opaque) { |
1184 | 72cf2d4f | Blue Swirl | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
1185 | 69e58af9 | Alex Williamson | if (se->compat) {
|
1186 | 69e58af9 | Alex Williamson | qemu_free(se->compat); |
1187 | 69e58af9 | Alex Williamson | } |
1188 | 8718e999 | Juan Quintela | qemu_free(se); |
1189 | 41bd13af | aliguori | } |
1190 | 41bd13af | aliguori | } |
1191 | 41bd13af | aliguori | } |
1192 | 41bd13af | aliguori | |
1193 | 24312968 | Cam Macdonell | /* mark a device as not to be migrated, that is the device should be
|
1194 | 24312968 | Cam Macdonell | unplugged before migration */
|
1195 | 24312968 | Cam Macdonell | void register_device_unmigratable(DeviceState *dev, const char *idstr, |
1196 | 24312968 | Cam Macdonell | void *opaque)
|
1197 | 24312968 | Cam Macdonell | { |
1198 | 24312968 | Cam Macdonell | SaveStateEntry *se; |
1199 | 24312968 | Cam Macdonell | char id[256] = ""; |
1200 | 24312968 | Cam Macdonell | |
1201 | 24312968 | Cam Macdonell | if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) {
|
1202 | 24312968 | Cam Macdonell | char *path = dev->parent_bus->info->get_dev_path(dev);
|
1203 | 24312968 | Cam Macdonell | if (path) {
|
1204 | 24312968 | Cam Macdonell | pstrcpy(id, sizeof(id), path);
|
1205 | 24312968 | Cam Macdonell | pstrcat(id, sizeof(id), "/"); |
1206 | 24312968 | Cam Macdonell | qemu_free(path); |
1207 | 24312968 | Cam Macdonell | } |
1208 | 24312968 | Cam Macdonell | } |
1209 | 24312968 | Cam Macdonell | pstrcat(id, sizeof(id), idstr);
|
1210 | 24312968 | Cam Macdonell | |
1211 | 24312968 | Cam Macdonell | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1212 | 24312968 | Cam Macdonell | if (strcmp(se->idstr, id) == 0 && se->opaque == opaque) { |
1213 | 24312968 | Cam Macdonell | se->no_migrate = 1;
|
1214 | 24312968 | Cam Macdonell | } |
1215 | 24312968 | Cam Macdonell | } |
1216 | 24312968 | Cam Macdonell | } |
1217 | 24312968 | Cam Macdonell | |
1218 | 0be71e32 | Alex Williamson | int vmstate_register_with_alias_id(DeviceState *dev, int instance_id, |
1219 | 4d2ffa08 | Jan Kiszka | const VMStateDescription *vmsd,
|
1220 | 4d2ffa08 | Jan Kiszka | void *opaque, int alias_id, |
1221 | 4d2ffa08 | Jan Kiszka | int required_for_version)
|
1222 | 9ed7d6ae | Juan Quintela | { |
1223 | 8718e999 | Juan Quintela | SaveStateEntry *se; |
1224 | 9ed7d6ae | Juan Quintela | |
1225 | 4d2ffa08 | Jan Kiszka | /* If this triggers, alias support can be dropped for the vmsd. */
|
1226 | 4d2ffa08 | Jan Kiszka | assert(alias_id == -1 || required_for_version >= vmsd->minimum_version_id);
|
1227 | 4d2ffa08 | Jan Kiszka | |
1228 | c163b5ca | lirans@il.ibm.com | se = qemu_mallocz(sizeof(SaveStateEntry));
|
1229 | 9ed7d6ae | Juan Quintela | se->version_id = vmsd->version_id; |
1230 | 9ed7d6ae | Juan Quintela | se->section_id = global_section_id++; |
1231 | 9ed7d6ae | Juan Quintela | se->save_live_state = NULL;
|
1232 | 9ed7d6ae | Juan Quintela | se->save_state = NULL;
|
1233 | 9ed7d6ae | Juan Quintela | se->load_state = NULL;
|
1234 | 9ed7d6ae | Juan Quintela | se->opaque = opaque; |
1235 | 9ed7d6ae | Juan Quintela | se->vmsd = vmsd; |
1236 | 4d2ffa08 | Jan Kiszka | se->alias_id = alias_id; |
1237 | 9ed7d6ae | Juan Quintela | |
1238 | 7685ee6a | Alex Williamson | if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) {
|
1239 | 7685ee6a | Alex Williamson | char *id = dev->parent_bus->info->get_dev_path(dev);
|
1240 | 7685ee6a | Alex Williamson | if (id) {
|
1241 | 7685ee6a | Alex Williamson | pstrcpy(se->idstr, sizeof(se->idstr), id);
|
1242 | 7685ee6a | Alex Williamson | pstrcat(se->idstr, sizeof(se->idstr), "/"); |
1243 | 7685ee6a | Alex Williamson | qemu_free(id); |
1244 | 7685ee6a | Alex Williamson | |
1245 | 7685ee6a | Alex Williamson | se->compat = qemu_mallocz(sizeof(CompatEntry));
|
1246 | 7685ee6a | Alex Williamson | pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), vmsd->name);
|
1247 | 7685ee6a | Alex Williamson | se->compat->instance_id = instance_id == -1 ?
|
1248 | 7685ee6a | Alex Williamson | calculate_compat_instance_id(vmsd->name) : instance_id; |
1249 | 7685ee6a | Alex Williamson | instance_id = -1;
|
1250 | 7685ee6a | Alex Williamson | } |
1251 | 7685ee6a | Alex Williamson | } |
1252 | 7685ee6a | Alex Williamson | pstrcat(se->idstr, sizeof(se->idstr), vmsd->name);
|
1253 | 7685ee6a | Alex Williamson | |
1254 | 8718e999 | Juan Quintela | if (instance_id == -1) { |
1255 | 7685ee6a | Alex Williamson | se->instance_id = calculate_new_instance_id(se->idstr); |
1256 | 8718e999 | Juan Quintela | } else {
|
1257 | 8718e999 | Juan Quintela | se->instance_id = instance_id; |
1258 | 9ed7d6ae | Juan Quintela | } |
1259 | 7685ee6a | Alex Williamson | assert(!se->compat || se->instance_id == 0);
|
1260 | 8718e999 | Juan Quintela | /* add at the end of list */
|
1261 | 72cf2d4f | Blue Swirl | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
1262 | 9ed7d6ae | Juan Quintela | return 0; |
1263 | 9ed7d6ae | Juan Quintela | } |
1264 | 9ed7d6ae | Juan Quintela | |
1265 | 0be71e32 | Alex Williamson | int vmstate_register(DeviceState *dev, int instance_id, |
1266 | 0be71e32 | Alex Williamson | const VMStateDescription *vmsd, void *opaque) |
1267 | 4d2ffa08 | Jan Kiszka | { |
1268 | 0be71e32 | Alex Williamson | return vmstate_register_with_alias_id(dev, instance_id, vmsd,
|
1269 | 0be71e32 | Alex Williamson | opaque, -1, 0); |
1270 | 4d2ffa08 | Jan Kiszka | } |
1271 | 4d2ffa08 | Jan Kiszka | |
1272 | 0be71e32 | Alex Williamson | void vmstate_unregister(DeviceState *dev, const VMStateDescription *vmsd, |
1273 | 0be71e32 | Alex Williamson | void *opaque)
|
1274 | 9ed7d6ae | Juan Quintela | { |
1275 | 1eb7538b | Juan Quintela | SaveStateEntry *se, *new_se; |
1276 | 1eb7538b | Juan Quintela | |
1277 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
1278 | 1eb7538b | Juan Quintela | if (se->vmsd == vmsd && se->opaque == opaque) {
|
1279 | 72cf2d4f | Blue Swirl | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
1280 | 69e58af9 | Alex Williamson | if (se->compat) {
|
1281 | 69e58af9 | Alex Williamson | qemu_free(se->compat); |
1282 | 69e58af9 | Alex Williamson | } |
1283 | 1eb7538b | Juan Quintela | qemu_free(se); |
1284 | 1eb7538b | Juan Quintela | } |
1285 | 1eb7538b | Juan Quintela | } |
1286 | 9ed7d6ae | Juan Quintela | } |
1287 | 9ed7d6ae | Juan Quintela | |
1288 | 811814bd | Juan Quintela | static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd, |
1289 | 811814bd | Juan Quintela | void *opaque);
|
1290 | 811814bd | Juan Quintela | static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd, |
1291 | 811814bd | Juan Quintela | void *opaque);
|
1292 | 811814bd | Juan Quintela | |
1293 | 9ed7d6ae | Juan Quintela | int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd, |
1294 | 9ed7d6ae | Juan Quintela | void *opaque, int version_id) |
1295 | 9ed7d6ae | Juan Quintela | { |
1296 | 9ed7d6ae | Juan Quintela | VMStateField *field = vmsd->fields; |
1297 | 811814bd | Juan Quintela | int ret;
|
1298 | 9ed7d6ae | Juan Quintela | |
1299 | 9ed7d6ae | Juan Quintela | if (version_id > vmsd->version_id) {
|
1300 | 9ed7d6ae | Juan Quintela | return -EINVAL;
|
1301 | 9ed7d6ae | Juan Quintela | } |
1302 | 9ed7d6ae | Juan Quintela | if (version_id < vmsd->minimum_version_id_old) {
|
1303 | 9ed7d6ae | Juan Quintela | return -EINVAL;
|
1304 | 9ed7d6ae | Juan Quintela | } |
1305 | 9ed7d6ae | Juan Quintela | if (version_id < vmsd->minimum_version_id) {
|
1306 | 9ed7d6ae | Juan Quintela | return vmsd->load_state_old(f, opaque, version_id);
|
1307 | 9ed7d6ae | Juan Quintela | } |
1308 | fd4d52de | Juan Quintela | if (vmsd->pre_load) {
|
1309 | fd4d52de | Juan Quintela | int ret = vmsd->pre_load(opaque);
|
1310 | fd4d52de | Juan Quintela | if (ret)
|
1311 | fd4d52de | Juan Quintela | return ret;
|
1312 | fd4d52de | Juan Quintela | } |
1313 | 9ed7d6ae | Juan Quintela | while(field->name) {
|
1314 | f11f6a5f | Juan Quintela | if ((field->field_exists &&
|
1315 | f11f6a5f | Juan Quintela | field->field_exists(opaque, version_id)) || |
1316 | f11f6a5f | Juan Quintela | (!field->field_exists && |
1317 | f11f6a5f | Juan Quintela | field->version_id <= version_id)) { |
1318 | f752a6aa | Juan Quintela | void *base_addr = opaque + field->offset;
|
1319 | 811814bd | Juan Quintela | int i, n_elems = 1; |
1320 | e61a1e0a | Juan Quintela | int size = field->size;
|
1321 | 9ed7d6ae | Juan Quintela | |
1322 | e61a1e0a | Juan Quintela | if (field->flags & VMS_VBUFFER) {
|
1323 | e61a1e0a | Juan Quintela | size = *(int32_t *)(opaque+field->size_offset); |
1324 | 33599e2a | Juan Quintela | if (field->flags & VMS_MULTIPLY) {
|
1325 | 33599e2a | Juan Quintela | size *= field->size; |
1326 | 33599e2a | Juan Quintela | } |
1327 | e61a1e0a | Juan Quintela | } |
1328 | f752a6aa | Juan Quintela | if (field->flags & VMS_ARRAY) {
|
1329 | f752a6aa | Juan Quintela | n_elems = field->num; |
1330 | d6698281 | Juan Quintela | } else if (field->flags & VMS_VARRAY_INT32) { |
1331 | d6698281 | Juan Quintela | n_elems = *(int32_t *)(opaque+field->num_offset); |
1332 | a624b086 | Juan Quintela | } else if (field->flags & VMS_VARRAY_UINT32) { |
1333 | a624b086 | Juan Quintela | n_elems = *(uint32_t *)(opaque+field->num_offset); |
1334 | bdb4941d | Juan Quintela | } else if (field->flags & VMS_VARRAY_UINT16) { |
1335 | bdb4941d | Juan Quintela | n_elems = *(uint16_t *)(opaque+field->num_offset); |
1336 | 82fa39b7 | Juan Quintela | } else if (field->flags & VMS_VARRAY_UINT8) { |
1337 | 82fa39b7 | Juan Quintela | n_elems = *(uint8_t *)(opaque+field->num_offset); |
1338 | f752a6aa | Juan Quintela | } |
1339 | dde0463b | Juan Quintela | if (field->flags & VMS_POINTER) {
|
1340 | e61a1e0a | Juan Quintela | base_addr = *(void **)base_addr + field->start;
|
1341 | dde0463b | Juan Quintela | } |
1342 | f752a6aa | Juan Quintela | for (i = 0; i < n_elems; i++) { |
1343 | e61a1e0a | Juan Quintela | void *addr = base_addr + size * i;
|
1344 | ec245e21 | Juan Quintela | |
1345 | 19df438b | Juan Quintela | if (field->flags & VMS_ARRAY_OF_POINTER) {
|
1346 | 19df438b | Juan Quintela | addr = *(void **)addr;
|
1347 | 19df438b | Juan Quintela | } |
1348 | ec245e21 | Juan Quintela | if (field->flags & VMS_STRUCT) {
|
1349 | fa3aad24 | Juan Quintela | ret = vmstate_load_state(f, field->vmsd, addr, field->vmsd->version_id); |
1350 | ec245e21 | Juan Quintela | } else {
|
1351 | e61a1e0a | Juan Quintela | ret = field->info->get(f, addr, size); |
1352 | ec245e21 | Juan Quintela | |
1353 | ec245e21 | Juan Quintela | } |
1354 | f752a6aa | Juan Quintela | if (ret < 0) { |
1355 | f752a6aa | Juan Quintela | return ret;
|
1356 | f752a6aa | Juan Quintela | } |
1357 | 9ed7d6ae | Juan Quintela | } |
1358 | 9ed7d6ae | Juan Quintela | } |
1359 | 9ed7d6ae | Juan Quintela | field++; |
1360 | 9ed7d6ae | Juan Quintela | } |
1361 | 811814bd | Juan Quintela | ret = vmstate_subsection_load(f, vmsd, opaque); |
1362 | 811814bd | Juan Quintela | if (ret != 0) { |
1363 | 811814bd | Juan Quintela | return ret;
|
1364 | 811814bd | Juan Quintela | } |
1365 | 752ff2fa | Juan Quintela | if (vmsd->post_load) {
|
1366 | e59fb374 | Juan Quintela | return vmsd->post_load(opaque, version_id);
|
1367 | 752ff2fa | Juan Quintela | } |
1368 | 9ed7d6ae | Juan Quintela | return 0; |
1369 | 9ed7d6ae | Juan Quintela | } |
1370 | 9ed7d6ae | Juan Quintela | |
1371 | 9ed7d6ae | Juan Quintela | void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd, |
1372 | 84e2e3eb | Juan Quintela | void *opaque)
|
1373 | 9ed7d6ae | Juan Quintela | { |
1374 | 9ed7d6ae | Juan Quintela | VMStateField *field = vmsd->fields; |
1375 | 9ed7d6ae | Juan Quintela | |
1376 | 8fb0791d | Juan Quintela | if (vmsd->pre_save) {
|
1377 | 8fb0791d | Juan Quintela | vmsd->pre_save(opaque); |
1378 | 8fb0791d | Juan Quintela | } |
1379 | 9ed7d6ae | Juan Quintela | while(field->name) {
|
1380 | f11f6a5f | Juan Quintela | if (!field->field_exists ||
|
1381 | f11f6a5f | Juan Quintela | field->field_exists(opaque, vmsd->version_id)) { |
1382 | f11f6a5f | Juan Quintela | void *base_addr = opaque + field->offset;
|
1383 | f11f6a5f | Juan Quintela | int i, n_elems = 1; |
1384 | e61a1e0a | Juan Quintela | int size = field->size;
|
1385 | dde0463b | Juan Quintela | |
1386 | e61a1e0a | Juan Quintela | if (field->flags & VMS_VBUFFER) {
|
1387 | e61a1e0a | Juan Quintela | size = *(int32_t *)(opaque+field->size_offset); |
1388 | 33599e2a | Juan Quintela | if (field->flags & VMS_MULTIPLY) {
|
1389 | 33599e2a | Juan Quintela | size *= field->size; |
1390 | 33599e2a | Juan Quintela | } |
1391 | e61a1e0a | Juan Quintela | } |
1392 | f11f6a5f | Juan Quintela | if (field->flags & VMS_ARRAY) {
|
1393 | f11f6a5f | Juan Quintela | n_elems = field->num; |
1394 | d6698281 | Juan Quintela | } else if (field->flags & VMS_VARRAY_INT32) { |
1395 | d6698281 | Juan Quintela | n_elems = *(int32_t *)(opaque+field->num_offset); |
1396 | bdb4941d | Juan Quintela | } else if (field->flags & VMS_VARRAY_UINT16) { |
1397 | bdb4941d | Juan Quintela | n_elems = *(uint16_t *)(opaque+field->num_offset); |
1398 | b784421c | Juan Quintela | } else if (field->flags & VMS_VARRAY_UINT8) { |
1399 | b784421c | Juan Quintela | n_elems = *(uint8_t *)(opaque+field->num_offset); |
1400 | f11f6a5f | Juan Quintela | } |
1401 | f11f6a5f | Juan Quintela | if (field->flags & VMS_POINTER) {
|
1402 | e61a1e0a | Juan Quintela | base_addr = *(void **)base_addr + field->start;
|
1403 | f11f6a5f | Juan Quintela | } |
1404 | f11f6a5f | Juan Quintela | for (i = 0; i < n_elems; i++) { |
1405 | e61a1e0a | Juan Quintela | void *addr = base_addr + size * i;
|
1406 | ec245e21 | Juan Quintela | |
1407 | 8595387e | Juan Quintela | if (field->flags & VMS_ARRAY_OF_POINTER) {
|
1408 | 8595387e | Juan Quintela | addr = *(void **)addr;
|
1409 | 8595387e | Juan Quintela | } |
1410 | f11f6a5f | Juan Quintela | if (field->flags & VMS_STRUCT) {
|
1411 | f11f6a5f | Juan Quintela | vmstate_save_state(f, field->vmsd, addr); |
1412 | f11f6a5f | Juan Quintela | } else {
|
1413 | e61a1e0a | Juan Quintela | field->info->put(f, addr, size); |
1414 | f11f6a5f | Juan Quintela | } |
1415 | ec245e21 | Juan Quintela | } |
1416 | dde0463b | Juan Quintela | } |
1417 | 9ed7d6ae | Juan Quintela | field++; |
1418 | 9ed7d6ae | Juan Quintela | } |
1419 | 811814bd | Juan Quintela | vmstate_subsection_save(f, vmsd, opaque); |
1420 | 9ed7d6ae | Juan Quintela | } |
1421 | 9ed7d6ae | Juan Quintela | |
1422 | 4082be4d | Juan Quintela | static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id) |
1423 | 4082be4d | Juan Quintela | { |
1424 | 9ed7d6ae | Juan Quintela | if (!se->vmsd) { /* Old style */ |
1425 | 9ed7d6ae | Juan Quintela | return se->load_state(f, se->opaque, version_id);
|
1426 | 9ed7d6ae | Juan Quintela | } |
1427 | 9ed7d6ae | Juan Quintela | return vmstate_load_state(f, se->vmsd, se->opaque, version_id);
|
1428 | 4082be4d | Juan Quintela | } |
1429 | 4082be4d | Juan Quintela | |
1430 | dc912121 | Alex Williamson | static void vmstate_save(QEMUFile *f, SaveStateEntry *se) |
1431 | 4082be4d | Juan Quintela | { |
1432 | 9ed7d6ae | Juan Quintela | if (!se->vmsd) { /* Old style */ |
1433 | 9ed7d6ae | Juan Quintela | se->save_state(f, se->opaque); |
1434 | dc912121 | Alex Williamson | return;
|
1435 | 9ed7d6ae | Juan Quintela | } |
1436 | 9ed7d6ae | Juan Quintela | vmstate_save_state(f,se->vmsd, se->opaque); |
1437 | 4082be4d | Juan Quintela | } |
1438 | 4082be4d | Juan Quintela | |
1439 | a672b469 | aliguori | #define QEMU_VM_FILE_MAGIC 0x5145564d |
1440 | a672b469 | aliguori | #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 |
1441 | a672b469 | aliguori | #define QEMU_VM_FILE_VERSION 0x00000003 |
1442 | a672b469 | aliguori | |
1443 | a672b469 | aliguori | #define QEMU_VM_EOF 0x00 |
1444 | a672b469 | aliguori | #define QEMU_VM_SECTION_START 0x01 |
1445 | a672b469 | aliguori | #define QEMU_VM_SECTION_PART 0x02 |
1446 | a672b469 | aliguori | #define QEMU_VM_SECTION_END 0x03 |
1447 | a672b469 | aliguori | #define QEMU_VM_SECTION_FULL 0x04 |
1448 | 811814bd | Juan Quintela | #define QEMU_VM_SUBSECTION 0x05 |
1449 | a672b469 | aliguori | |
1450 | dc912121 | Alex Williamson | bool qemu_savevm_state_blocked(Monitor *mon)
|
1451 | dc912121 | Alex Williamson | { |
1452 | dc912121 | Alex Williamson | SaveStateEntry *se; |
1453 | dc912121 | Alex Williamson | |
1454 | dc912121 | Alex Williamson | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1455 | dc912121 | Alex Williamson | if (se->no_migrate) {
|
1456 | dc912121 | Alex Williamson | monitor_printf(mon, "state blocked by non-migratable device '%s'\n",
|
1457 | dc912121 | Alex Williamson | se->idstr); |
1458 | dc912121 | Alex Williamson | return true; |
1459 | dc912121 | Alex Williamson | } |
1460 | dc912121 | Alex Williamson | } |
1461 | dc912121 | Alex Williamson | return false; |
1462 | dc912121 | Alex Williamson | } |
1463 | dc912121 | Alex Williamson | |
1464 | f327aa0c | Jan Kiszka | int qemu_savevm_state_begin(Monitor *mon, QEMUFile *f, int blk_enable, |
1465 | f327aa0c | Jan Kiszka | int shared)
|
1466 | a672b469 | aliguori | { |
1467 | a672b469 | aliguori | SaveStateEntry *se; |
1468 | a672b469 | aliguori | |
1469 | c163b5ca | lirans@il.ibm.com | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1470 | c163b5ca | lirans@il.ibm.com | if(se->set_params == NULL) { |
1471 | c163b5ca | lirans@il.ibm.com | continue;
|
1472 | c163b5ca | lirans@il.ibm.com | } |
1473 | c163b5ca | lirans@il.ibm.com | se->set_params(blk_enable, shared, se->opaque); |
1474 | c163b5ca | lirans@il.ibm.com | } |
1475 | c163b5ca | lirans@il.ibm.com | |
1476 | a672b469 | aliguori | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); |
1477 | a672b469 | aliguori | qemu_put_be32(f, QEMU_VM_FILE_VERSION); |
1478 | a672b469 | aliguori | |
1479 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1480 | a672b469 | aliguori | int len;
|
1481 | a672b469 | aliguori | |
1482 | a672b469 | aliguori | if (se->save_live_state == NULL) |
1483 | a672b469 | aliguori | continue;
|
1484 | a672b469 | aliguori | |
1485 | a672b469 | aliguori | /* Section type */
|
1486 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_START); |
1487 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1488 | a672b469 | aliguori | |
1489 | a672b469 | aliguori | /* ID string */
|
1490 | a672b469 | aliguori | len = strlen(se->idstr); |
1491 | a672b469 | aliguori | qemu_put_byte(f, len); |
1492 | a672b469 | aliguori | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
1493 | a672b469 | aliguori | |
1494 | a672b469 | aliguori | qemu_put_be32(f, se->instance_id); |
1495 | a672b469 | aliguori | qemu_put_be32(f, se->version_id); |
1496 | a672b469 | aliguori | |
1497 | f327aa0c | Jan Kiszka | se->save_live_state(mon, f, QEMU_VM_SECTION_START, se->opaque); |
1498 | a672b469 | aliguori | } |
1499 | a672b469 | aliguori | |
1500 | 4ec7fcc7 | Jan Kiszka | if (qemu_file_has_error(f)) {
|
1501 | f327aa0c | Jan Kiszka | qemu_savevm_state_cancel(mon, f); |
1502 | a672b469 | aliguori | return -EIO;
|
1503 | 4ec7fcc7 | Jan Kiszka | } |
1504 | a672b469 | aliguori | |
1505 | a672b469 | aliguori | return 0; |
1506 | a672b469 | aliguori | } |
1507 | a672b469 | aliguori | |
1508 | f327aa0c | Jan Kiszka | int qemu_savevm_state_iterate(Monitor *mon, QEMUFile *f)
|
1509 | a672b469 | aliguori | { |
1510 | a672b469 | aliguori | SaveStateEntry *se; |
1511 | a672b469 | aliguori | int ret = 1; |
1512 | a672b469 | aliguori | |
1513 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1514 | a672b469 | aliguori | if (se->save_live_state == NULL) |
1515 | a672b469 | aliguori | continue;
|
1516 | a672b469 | aliguori | |
1517 | a672b469 | aliguori | /* Section type */
|
1518 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_PART); |
1519 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1520 | a672b469 | aliguori | |
1521 | 90697be8 | Jan Kiszka | ret = se->save_live_state(mon, f, QEMU_VM_SECTION_PART, se->opaque); |
1522 | 90697be8 | Jan Kiszka | if (!ret) {
|
1523 | 90697be8 | Jan Kiszka | /* Do not proceed to the next vmstate before this one reported
|
1524 | 90697be8 | Jan Kiszka | completion of the current stage. This serializes the migration
|
1525 | 90697be8 | Jan Kiszka | and reduces the probability that a faster changing state is
|
1526 | 90697be8 | Jan Kiszka | synchronized over and over again. */
|
1527 | 90697be8 | Jan Kiszka | break;
|
1528 | 90697be8 | Jan Kiszka | } |
1529 | a672b469 | aliguori | } |
1530 | a672b469 | aliguori | |
1531 | a672b469 | aliguori | if (ret)
|
1532 | a672b469 | aliguori | return 1; |
1533 | a672b469 | aliguori | |
1534 | 4ec7fcc7 | Jan Kiszka | if (qemu_file_has_error(f)) {
|
1535 | f327aa0c | Jan Kiszka | qemu_savevm_state_cancel(mon, f); |
1536 | a672b469 | aliguori | return -EIO;
|
1537 | 4ec7fcc7 | Jan Kiszka | } |
1538 | a672b469 | aliguori | |
1539 | a672b469 | aliguori | return 0; |
1540 | a672b469 | aliguori | } |
1541 | a672b469 | aliguori | |
1542 | f327aa0c | Jan Kiszka | int qemu_savevm_state_complete(Monitor *mon, QEMUFile *f)
|
1543 | a672b469 | aliguori | { |
1544 | a672b469 | aliguori | SaveStateEntry *se; |
1545 | a672b469 | aliguori | |
1546 | ea375f9a | Jan Kiszka | cpu_synchronize_all_states(); |
1547 | ea375f9a | Jan Kiszka | |
1548 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1549 | a672b469 | aliguori | if (se->save_live_state == NULL) |
1550 | a672b469 | aliguori | continue;
|
1551 | a672b469 | aliguori | |
1552 | a672b469 | aliguori | /* Section type */
|
1553 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_END); |
1554 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1555 | a672b469 | aliguori | |
1556 | f327aa0c | Jan Kiszka | se->save_live_state(mon, f, QEMU_VM_SECTION_END, se->opaque); |
1557 | a672b469 | aliguori | } |
1558 | a672b469 | aliguori | |
1559 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1560 | a672b469 | aliguori | int len;
|
1561 | a672b469 | aliguori | |
1562 | 9ed7d6ae | Juan Quintela | if (se->save_state == NULL && se->vmsd == NULL) |
1563 | a672b469 | aliguori | continue;
|
1564 | a672b469 | aliguori | |
1565 | a672b469 | aliguori | /* Section type */
|
1566 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_FULL); |
1567 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1568 | a672b469 | aliguori | |
1569 | a672b469 | aliguori | /* ID string */
|
1570 | a672b469 | aliguori | len = strlen(se->idstr); |
1571 | a672b469 | aliguori | qemu_put_byte(f, len); |
1572 | a672b469 | aliguori | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
1573 | a672b469 | aliguori | |
1574 | a672b469 | aliguori | qemu_put_be32(f, se->instance_id); |
1575 | a672b469 | aliguori | qemu_put_be32(f, se->version_id); |
1576 | a672b469 | aliguori | |
1577 | dc912121 | Alex Williamson | vmstate_save(f, se); |
1578 | a672b469 | aliguori | } |
1579 | a672b469 | aliguori | |
1580 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_EOF); |
1581 | a672b469 | aliguori | |
1582 | a672b469 | aliguori | if (qemu_file_has_error(f))
|
1583 | a672b469 | aliguori | return -EIO;
|
1584 | a672b469 | aliguori | |
1585 | a672b469 | aliguori | return 0; |
1586 | a672b469 | aliguori | } |
1587 | a672b469 | aliguori | |
1588 | f327aa0c | Jan Kiszka | void qemu_savevm_state_cancel(Monitor *mon, QEMUFile *f)
|
1589 | 4ec7fcc7 | Jan Kiszka | { |
1590 | 4ec7fcc7 | Jan Kiszka | SaveStateEntry *se; |
1591 | 4ec7fcc7 | Jan Kiszka | |
1592 | 4ec7fcc7 | Jan Kiszka | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1593 | 4ec7fcc7 | Jan Kiszka | if (se->save_live_state) {
|
1594 | f327aa0c | Jan Kiszka | se->save_live_state(mon, f, -1, se->opaque);
|
1595 | 4ec7fcc7 | Jan Kiszka | } |
1596 | 4ec7fcc7 | Jan Kiszka | } |
1597 | 4ec7fcc7 | Jan Kiszka | } |
1598 | 4ec7fcc7 | Jan Kiszka | |
1599 | f327aa0c | Jan Kiszka | static int qemu_savevm_state(Monitor *mon, QEMUFile *f) |
1600 | a672b469 | aliguori | { |
1601 | a672b469 | aliguori | int saved_vm_running;
|
1602 | a672b469 | aliguori | int ret;
|
1603 | a672b469 | aliguori | |
1604 | a672b469 | aliguori | saved_vm_running = vm_running; |
1605 | e07bbac5 | Jan Kiszka | vm_stop(VMSTOP_SAVEVM); |
1606 | a672b469 | aliguori | |
1607 | dc912121 | Alex Williamson | if (qemu_savevm_state_blocked(mon)) {
|
1608 | dc912121 | Alex Williamson | ret = -EINVAL; |
1609 | dc912121 | Alex Williamson | goto out;
|
1610 | dc912121 | Alex Williamson | } |
1611 | dc912121 | Alex Williamson | |
1612 | f327aa0c | Jan Kiszka | ret = qemu_savevm_state_begin(mon, f, 0, 0); |
1613 | a672b469 | aliguori | if (ret < 0) |
1614 | a672b469 | aliguori | goto out;
|
1615 | a672b469 | aliguori | |
1616 | a672b469 | aliguori | do {
|
1617 | f327aa0c | Jan Kiszka | ret = qemu_savevm_state_iterate(mon, f); |
1618 | a672b469 | aliguori | if (ret < 0) |
1619 | a672b469 | aliguori | goto out;
|
1620 | a672b469 | aliguori | } while (ret == 0); |
1621 | a672b469 | aliguori | |
1622 | f327aa0c | Jan Kiszka | ret = qemu_savevm_state_complete(mon, f); |
1623 | a672b469 | aliguori | |
1624 | a672b469 | aliguori | out:
|
1625 | a672b469 | aliguori | if (qemu_file_has_error(f))
|
1626 | a672b469 | aliguori | ret = -EIO; |
1627 | a672b469 | aliguori | |
1628 | a672b469 | aliguori | if (!ret && saved_vm_running)
|
1629 | a672b469 | aliguori | vm_start(); |
1630 | a672b469 | aliguori | |
1631 | a672b469 | aliguori | return ret;
|
1632 | a672b469 | aliguori | } |
1633 | a672b469 | aliguori | |
1634 | a672b469 | aliguori | static SaveStateEntry *find_se(const char *idstr, int instance_id) |
1635 | a672b469 | aliguori | { |
1636 | a672b469 | aliguori | SaveStateEntry *se; |
1637 | a672b469 | aliguori | |
1638 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1639 | a672b469 | aliguori | if (!strcmp(se->idstr, idstr) &&
|
1640 | 4d2ffa08 | Jan Kiszka | (instance_id == se->instance_id || |
1641 | 4d2ffa08 | Jan Kiszka | instance_id == se->alias_id)) |
1642 | a672b469 | aliguori | return se;
|
1643 | 7685ee6a | Alex Williamson | /* Migrating from an older version? */
|
1644 | 7685ee6a | Alex Williamson | if (strstr(se->idstr, idstr) && se->compat) {
|
1645 | 7685ee6a | Alex Williamson | if (!strcmp(se->compat->idstr, idstr) &&
|
1646 | 7685ee6a | Alex Williamson | (instance_id == se->compat->instance_id || |
1647 | 7685ee6a | Alex Williamson | instance_id == se->alias_id)) |
1648 | 7685ee6a | Alex Williamson | return se;
|
1649 | 7685ee6a | Alex Williamson | } |
1650 | a672b469 | aliguori | } |
1651 | a672b469 | aliguori | return NULL; |
1652 | a672b469 | aliguori | } |
1653 | a672b469 | aliguori | |
1654 | 811814bd | Juan Quintela | static const VMStateDescription *vmstate_get_subsection(const VMStateSubsection *sub, char *idstr) |
1655 | 811814bd | Juan Quintela | { |
1656 | 811814bd | Juan Quintela | while(sub && sub->needed) {
|
1657 | 811814bd | Juan Quintela | if (strcmp(idstr, sub->vmsd->name) == 0) { |
1658 | 811814bd | Juan Quintela | return sub->vmsd;
|
1659 | 811814bd | Juan Quintela | } |
1660 | 811814bd | Juan Quintela | sub++; |
1661 | 811814bd | Juan Quintela | } |
1662 | 811814bd | Juan Quintela | return NULL; |
1663 | 811814bd | Juan Quintela | } |
1664 | 811814bd | Juan Quintela | |
1665 | 811814bd | Juan Quintela | static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd, |
1666 | 811814bd | Juan Quintela | void *opaque)
|
1667 | 811814bd | Juan Quintela | { |
1668 | eb60260d | Yoshiaki Tamura | const VMStateSubsection *sub = vmsd->subsections;
|
1669 | eb60260d | Yoshiaki Tamura | |
1670 | eb60260d | Yoshiaki Tamura | if (!sub || !sub->needed) {
|
1671 | eb60260d | Yoshiaki Tamura | return 0; |
1672 | eb60260d | Yoshiaki Tamura | } |
1673 | eb60260d | Yoshiaki Tamura | |
1674 | 811814bd | Juan Quintela | while (qemu_peek_byte(f) == QEMU_VM_SUBSECTION) {
|
1675 | 811814bd | Juan Quintela | char idstr[256]; |
1676 | 811814bd | Juan Quintela | int ret;
|
1677 | 49a2942d | Blue Swirl | uint8_t version_id, len; |
1678 | 811814bd | Juan Quintela | const VMStateDescription *sub_vmsd;
|
1679 | 811814bd | Juan Quintela | |
1680 | 49a2942d | Blue Swirl | qemu_get_byte(f); /* subsection */
|
1681 | 811814bd | Juan Quintela | len = qemu_get_byte(f); |
1682 | 811814bd | Juan Quintela | qemu_get_buffer(f, (uint8_t *)idstr, len); |
1683 | 811814bd | Juan Quintela | idstr[len] = 0;
|
1684 | 811814bd | Juan Quintela | version_id = qemu_get_be32(f); |
1685 | 811814bd | Juan Quintela | |
1686 | eb60260d | Yoshiaki Tamura | sub_vmsd = vmstate_get_subsection(sub, idstr); |
1687 | 811814bd | Juan Quintela | if (sub_vmsd == NULL) { |
1688 | 811814bd | Juan Quintela | return -ENOENT;
|
1689 | 811814bd | Juan Quintela | } |
1690 | eb60260d | Yoshiaki Tamura | assert(!sub_vmsd->subsections); |
1691 | 811814bd | Juan Quintela | ret = vmstate_load_state(f, sub_vmsd, opaque, version_id); |
1692 | 811814bd | Juan Quintela | if (ret) {
|
1693 | 811814bd | Juan Quintela | return ret;
|
1694 | 811814bd | Juan Quintela | } |
1695 | 811814bd | Juan Quintela | } |
1696 | 811814bd | Juan Quintela | return 0; |
1697 | 811814bd | Juan Quintela | } |
1698 | 811814bd | Juan Quintela | |
1699 | 811814bd | Juan Quintela | static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd, |
1700 | 811814bd | Juan Quintela | void *opaque)
|
1701 | 811814bd | Juan Quintela | { |
1702 | 811814bd | Juan Quintela | const VMStateSubsection *sub = vmsd->subsections;
|
1703 | 811814bd | Juan Quintela | |
1704 | 811814bd | Juan Quintela | while (sub && sub->needed) {
|
1705 | 811814bd | Juan Quintela | if (sub->needed(opaque)) {
|
1706 | 811814bd | Juan Quintela | const VMStateDescription *vmsd = sub->vmsd;
|
1707 | 811814bd | Juan Quintela | uint8_t len; |
1708 | 811814bd | Juan Quintela | |
1709 | 811814bd | Juan Quintela | qemu_put_byte(f, QEMU_VM_SUBSECTION); |
1710 | 811814bd | Juan Quintela | len = strlen(vmsd->name); |
1711 | 811814bd | Juan Quintela | qemu_put_byte(f, len); |
1712 | 811814bd | Juan Quintela | qemu_put_buffer(f, (uint8_t *)vmsd->name, len); |
1713 | 811814bd | Juan Quintela | qemu_put_be32(f, vmsd->version_id); |
1714 | eb60260d | Yoshiaki Tamura | assert(!vmsd->subsections); |
1715 | 811814bd | Juan Quintela | vmstate_save_state(f, vmsd, opaque); |
1716 | 811814bd | Juan Quintela | } |
1717 | 811814bd | Juan Quintela | sub++; |
1718 | 811814bd | Juan Quintela | } |
1719 | 811814bd | Juan Quintela | } |
1720 | 811814bd | Juan Quintela | |
1721 | a672b469 | aliguori | typedef struct LoadStateEntry { |
1722 | 72cf2d4f | Blue Swirl | QLIST_ENTRY(LoadStateEntry) entry; |
1723 | a672b469 | aliguori | SaveStateEntry *se; |
1724 | a672b469 | aliguori | int section_id;
|
1725 | a672b469 | aliguori | int version_id;
|
1726 | a672b469 | aliguori | } LoadStateEntry; |
1727 | a672b469 | aliguori | |
1728 | a672b469 | aliguori | int qemu_loadvm_state(QEMUFile *f)
|
1729 | a672b469 | aliguori | { |
1730 | 72cf2d4f | Blue Swirl | QLIST_HEAD(, LoadStateEntry) loadvm_handlers = |
1731 | 72cf2d4f | Blue Swirl | QLIST_HEAD_INITIALIZER(loadvm_handlers); |
1732 | f4dbb8dd | Juan Quintela | LoadStateEntry *le, *new_le; |
1733 | a672b469 | aliguori | uint8_t section_type; |
1734 | a672b469 | aliguori | unsigned int v; |
1735 | a672b469 | aliguori | int ret;
|
1736 | a672b469 | aliguori | |
1737 | dc912121 | Alex Williamson | if (qemu_savevm_state_blocked(default_mon)) {
|
1738 | dc912121 | Alex Williamson | return -EINVAL;
|
1739 | dc912121 | Alex Williamson | } |
1740 | dc912121 | Alex Williamson | |
1741 | a672b469 | aliguori | v = qemu_get_be32(f); |
1742 | a672b469 | aliguori | if (v != QEMU_VM_FILE_MAGIC)
|
1743 | a672b469 | aliguori | return -EINVAL;
|
1744 | a672b469 | aliguori | |
1745 | a672b469 | aliguori | v = qemu_get_be32(f); |
1746 | bbfe1408 | Juan Quintela | if (v == QEMU_VM_FILE_VERSION_COMPAT) {
|
1747 | bbfe1408 | Juan Quintela | fprintf(stderr, "SaveVM v2 format is obsolete and don't work anymore\n");
|
1748 | bbfe1408 | Juan Quintela | return -ENOTSUP;
|
1749 | bbfe1408 | Juan Quintela | } |
1750 | a672b469 | aliguori | if (v != QEMU_VM_FILE_VERSION)
|
1751 | a672b469 | aliguori | return -ENOTSUP;
|
1752 | a672b469 | aliguori | |
1753 | a672b469 | aliguori | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) {
|
1754 | a672b469 | aliguori | uint32_t instance_id, version_id, section_id; |
1755 | a672b469 | aliguori | SaveStateEntry *se; |
1756 | a672b469 | aliguori | char idstr[257]; |
1757 | a672b469 | aliguori | int len;
|
1758 | a672b469 | aliguori | |
1759 | a672b469 | aliguori | switch (section_type) {
|
1760 | a672b469 | aliguori | case QEMU_VM_SECTION_START:
|
1761 | a672b469 | aliguori | case QEMU_VM_SECTION_FULL:
|
1762 | a672b469 | aliguori | /* Read section start */
|
1763 | a672b469 | aliguori | section_id = qemu_get_be32(f); |
1764 | a672b469 | aliguori | len = qemu_get_byte(f); |
1765 | a672b469 | aliguori | qemu_get_buffer(f, (uint8_t *)idstr, len); |
1766 | a672b469 | aliguori | idstr[len] = 0;
|
1767 | a672b469 | aliguori | instance_id = qemu_get_be32(f); |
1768 | a672b469 | aliguori | version_id = qemu_get_be32(f); |
1769 | a672b469 | aliguori | |
1770 | a672b469 | aliguori | /* Find savevm section */
|
1771 | a672b469 | aliguori | se = find_se(idstr, instance_id); |
1772 | a672b469 | aliguori | if (se == NULL) { |
1773 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id);
|
1774 | a672b469 | aliguori | ret = -EINVAL; |
1775 | a672b469 | aliguori | goto out;
|
1776 | a672b469 | aliguori | } |
1777 | a672b469 | aliguori | |
1778 | a672b469 | aliguori | /* Validate version */
|
1779 | a672b469 | aliguori | if (version_id > se->version_id) {
|
1780 | a672b469 | aliguori | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n",
|
1781 | a672b469 | aliguori | version_id, idstr, se->version_id); |
1782 | a672b469 | aliguori | ret = -EINVAL; |
1783 | a672b469 | aliguori | goto out;
|
1784 | a672b469 | aliguori | } |
1785 | a672b469 | aliguori | |
1786 | a672b469 | aliguori | /* Add entry */
|
1787 | a672b469 | aliguori | le = qemu_mallocz(sizeof(*le));
|
1788 | a672b469 | aliguori | |
1789 | a672b469 | aliguori | le->se = se; |
1790 | a672b469 | aliguori | le->section_id = section_id; |
1791 | a672b469 | aliguori | le->version_id = version_id; |
1792 | 72cf2d4f | Blue Swirl | QLIST_INSERT_HEAD(&loadvm_handlers, le, entry); |
1793 | a672b469 | aliguori | |
1794 | 4082be4d | Juan Quintela | ret = vmstate_load(f, le->se, le->version_id); |
1795 | b5a22e4a | Juan Quintela | if (ret < 0) { |
1796 | b5a22e4a | Juan Quintela | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n",
|
1797 | b5a22e4a | Juan Quintela | instance_id, idstr); |
1798 | b5a22e4a | Juan Quintela | goto out;
|
1799 | b5a22e4a | Juan Quintela | } |
1800 | a672b469 | aliguori | break;
|
1801 | a672b469 | aliguori | case QEMU_VM_SECTION_PART:
|
1802 | a672b469 | aliguori | case QEMU_VM_SECTION_END:
|
1803 | a672b469 | aliguori | section_id = qemu_get_be32(f); |
1804 | a672b469 | aliguori | |
1805 | 72cf2d4f | Blue Swirl | QLIST_FOREACH(le, &loadvm_handlers, entry) { |
1806 | f4dbb8dd | Juan Quintela | if (le->section_id == section_id) {
|
1807 | f4dbb8dd | Juan Quintela | break;
|
1808 | f4dbb8dd | Juan Quintela | } |
1809 | f4dbb8dd | Juan Quintela | } |
1810 | a672b469 | aliguori | if (le == NULL) { |
1811 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section %d\n", section_id);
|
1812 | a672b469 | aliguori | ret = -EINVAL; |
1813 | a672b469 | aliguori | goto out;
|
1814 | a672b469 | aliguori | } |
1815 | a672b469 | aliguori | |
1816 | 4082be4d | Juan Quintela | ret = vmstate_load(f, le->se, le->version_id); |
1817 | b5a22e4a | Juan Quintela | if (ret < 0) { |
1818 | b5a22e4a | Juan Quintela | fprintf(stderr, "qemu: warning: error while loading state section id %d\n",
|
1819 | b5a22e4a | Juan Quintela | section_id); |
1820 | b5a22e4a | Juan Quintela | goto out;
|
1821 | b5a22e4a | Juan Quintela | } |
1822 | a672b469 | aliguori | break;
|
1823 | a672b469 | aliguori | default:
|
1824 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section type %d\n", section_type);
|
1825 | a672b469 | aliguori | ret = -EINVAL; |
1826 | a672b469 | aliguori | goto out;
|
1827 | a672b469 | aliguori | } |
1828 | a672b469 | aliguori | } |
1829 | a672b469 | aliguori | |
1830 | ea375f9a | Jan Kiszka | cpu_synchronize_all_post_init(); |
1831 | ea375f9a | Jan Kiszka | |
1832 | a672b469 | aliguori | ret = 0;
|
1833 | a672b469 | aliguori | |
1834 | a672b469 | aliguori | out:
|
1835 | 72cf2d4f | Blue Swirl | QLIST_FOREACH_SAFE(le, &loadvm_handlers, entry, new_le) { |
1836 | 72cf2d4f | Blue Swirl | QLIST_REMOVE(le, entry); |
1837 | a672b469 | aliguori | qemu_free(le); |
1838 | a672b469 | aliguori | } |
1839 | a672b469 | aliguori | |
1840 | a672b469 | aliguori | if (qemu_file_has_error(f))
|
1841 | a672b469 | aliguori | ret = -EIO; |
1842 | a672b469 | aliguori | |
1843 | a672b469 | aliguori | return ret;
|
1844 | a672b469 | aliguori | } |
1845 | a672b469 | aliguori | |
1846 | a672b469 | aliguori | static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, |
1847 | a672b469 | aliguori | const char *name) |
1848 | a672b469 | aliguori | { |
1849 | a672b469 | aliguori | QEMUSnapshotInfo *sn_tab, *sn; |
1850 | a672b469 | aliguori | int nb_sns, i, ret;
|
1851 | a672b469 | aliguori | |
1852 | a672b469 | aliguori | ret = -ENOENT; |
1853 | a672b469 | aliguori | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
1854 | a672b469 | aliguori | if (nb_sns < 0) |
1855 | a672b469 | aliguori | return ret;
|
1856 | a672b469 | aliguori | for(i = 0; i < nb_sns; i++) { |
1857 | a672b469 | aliguori | sn = &sn_tab[i]; |
1858 | a672b469 | aliguori | if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) {
|
1859 | a672b469 | aliguori | *sn_info = *sn; |
1860 | a672b469 | aliguori | ret = 0;
|
1861 | a672b469 | aliguori | break;
|
1862 | a672b469 | aliguori | } |
1863 | a672b469 | aliguori | } |
1864 | a672b469 | aliguori | qemu_free(sn_tab); |
1865 | a672b469 | aliguori | return ret;
|
1866 | a672b469 | aliguori | } |
1867 | a672b469 | aliguori | |
1868 | cb499fb2 | Kevin Wolf | /*
|
1869 | cb499fb2 | Kevin Wolf | * Deletes snapshots of a given name in all opened images.
|
1870 | cb499fb2 | Kevin Wolf | */
|
1871 | cb499fb2 | Kevin Wolf | static int del_existing_snapshots(Monitor *mon, const char *name) |
1872 | cb499fb2 | Kevin Wolf | { |
1873 | cb499fb2 | Kevin Wolf | BlockDriverState *bs; |
1874 | cb499fb2 | Kevin Wolf | QEMUSnapshotInfo sn1, *snapshot = &sn1; |
1875 | cb499fb2 | Kevin Wolf | int ret;
|
1876 | cb499fb2 | Kevin Wolf | |
1877 | dbc13590 | Markus Armbruster | bs = NULL;
|
1878 | dbc13590 | Markus Armbruster | while ((bs = bdrv_next(bs))) {
|
1879 | cb499fb2 | Kevin Wolf | if (bdrv_can_snapshot(bs) &&
|
1880 | cb499fb2 | Kevin Wolf | bdrv_snapshot_find(bs, snapshot, name) >= 0)
|
1881 | cb499fb2 | Kevin Wolf | { |
1882 | cb499fb2 | Kevin Wolf | ret = bdrv_snapshot_delete(bs, name); |
1883 | cb499fb2 | Kevin Wolf | if (ret < 0) { |
1884 | cb499fb2 | Kevin Wolf | monitor_printf(mon, |
1885 | cb499fb2 | Kevin Wolf | "Error while deleting snapshot on '%s'\n",
|
1886 | cb499fb2 | Kevin Wolf | bdrv_get_device_name(bs)); |
1887 | cb499fb2 | Kevin Wolf | return -1; |
1888 | cb499fb2 | Kevin Wolf | } |
1889 | cb499fb2 | Kevin Wolf | } |
1890 | cb499fb2 | Kevin Wolf | } |
1891 | cb499fb2 | Kevin Wolf | |
1892 | cb499fb2 | Kevin Wolf | return 0; |
1893 | cb499fb2 | Kevin Wolf | } |
1894 | cb499fb2 | Kevin Wolf | |
1895 | d54908a5 | Luiz Capitulino | void do_savevm(Monitor *mon, const QDict *qdict) |
1896 | a672b469 | aliguori | { |
1897 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
1898 | a672b469 | aliguori | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; |
1899 | cb499fb2 | Kevin Wolf | int ret;
|
1900 | a672b469 | aliguori | QEMUFile *f; |
1901 | a672b469 | aliguori | int saved_vm_running;
|
1902 | 2d22b18f | aliguori | uint32_t vm_state_size; |
1903 | a672b469 | aliguori | #ifdef _WIN32
|
1904 | a672b469 | aliguori | struct _timeb tb;
|
1905 | 7d631a11 | Miguel Di Ciurcio Filho | struct tm *ptm;
|
1906 | a672b469 | aliguori | #else
|
1907 | a672b469 | aliguori | struct timeval tv;
|
1908 | 7d631a11 | Miguel Di Ciurcio Filho | struct tm tm;
|
1909 | a672b469 | aliguori | #endif
|
1910 | d54908a5 | Luiz Capitulino | const char *name = qdict_get_try_str(qdict, "name"); |
1911 | a672b469 | aliguori | |
1912 | feeee5ac | Miguel Di Ciurcio Filho | /* Verify if there is a device that doesn't support snapshots and is writable */
|
1913 | dbc13590 | Markus Armbruster | bs = NULL;
|
1914 | dbc13590 | Markus Armbruster | while ((bs = bdrv_next(bs))) {
|
1915 | feeee5ac | Miguel Di Ciurcio Filho | |
1916 | feeee5ac | Miguel Di Ciurcio Filho | if (bdrv_is_removable(bs) || bdrv_is_read_only(bs)) {
|
1917 | feeee5ac | Miguel Di Ciurcio Filho | continue;
|
1918 | feeee5ac | Miguel Di Ciurcio Filho | } |
1919 | feeee5ac | Miguel Di Ciurcio Filho | |
1920 | feeee5ac | Miguel Di Ciurcio Filho | if (!bdrv_can_snapshot(bs)) {
|
1921 | feeee5ac | Miguel Di Ciurcio Filho | monitor_printf(mon, "Device '%s' is writable but does not support snapshots.\n",
|
1922 | feeee5ac | Miguel Di Ciurcio Filho | bdrv_get_device_name(bs)); |
1923 | feeee5ac | Miguel Di Ciurcio Filho | return;
|
1924 | feeee5ac | Miguel Di Ciurcio Filho | } |
1925 | feeee5ac | Miguel Di Ciurcio Filho | } |
1926 | feeee5ac | Miguel Di Ciurcio Filho | |
1927 | f9092b10 | Markus Armbruster | bs = bdrv_snapshots(); |
1928 | a672b469 | aliguori | if (!bs) {
|
1929 | 376253ec | aliguori | monitor_printf(mon, "No block device can accept snapshots\n");
|
1930 | a672b469 | aliguori | return;
|
1931 | a672b469 | aliguori | } |
1932 | a672b469 | aliguori | |
1933 | a672b469 | aliguori | saved_vm_running = vm_running; |
1934 | e07bbac5 | Jan Kiszka | vm_stop(VMSTOP_SAVEVM); |
1935 | a672b469 | aliguori | |
1936 | cb499fb2 | Kevin Wolf | memset(sn, 0, sizeof(*sn)); |
1937 | a672b469 | aliguori | |
1938 | a672b469 | aliguori | /* fill auxiliary fields */
|
1939 | a672b469 | aliguori | #ifdef _WIN32
|
1940 | a672b469 | aliguori | _ftime(&tb); |
1941 | a672b469 | aliguori | sn->date_sec = tb.time; |
1942 | a672b469 | aliguori | sn->date_nsec = tb.millitm * 1000000;
|
1943 | a672b469 | aliguori | #else
|
1944 | a672b469 | aliguori | gettimeofday(&tv, NULL);
|
1945 | a672b469 | aliguori | sn->date_sec = tv.tv_sec; |
1946 | a672b469 | aliguori | sn->date_nsec = tv.tv_usec * 1000;
|
1947 | a672b469 | aliguori | #endif
|
1948 | 74475455 | Paolo Bonzini | sn->vm_clock_nsec = qemu_get_clock_ns(vm_clock); |
1949 | a672b469 | aliguori | |
1950 | 7d631a11 | Miguel Di Ciurcio Filho | if (name) {
|
1951 | 7d631a11 | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_find(bs, old_sn, name); |
1952 | 7d631a11 | Miguel Di Ciurcio Filho | if (ret >= 0) { |
1953 | 7d631a11 | Miguel Di Ciurcio Filho | pstrcpy(sn->name, sizeof(sn->name), old_sn->name);
|
1954 | 7d631a11 | Miguel Di Ciurcio Filho | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str);
|
1955 | 7d631a11 | Miguel Di Ciurcio Filho | } else {
|
1956 | 7d631a11 | Miguel Di Ciurcio Filho | pstrcpy(sn->name, sizeof(sn->name), name);
|
1957 | 7d631a11 | Miguel Di Ciurcio Filho | } |
1958 | 7d631a11 | Miguel Di Ciurcio Filho | } else {
|
1959 | 7d631a11 | Miguel Di Ciurcio Filho | #ifdef _WIN32
|
1960 | 7d631a11 | Miguel Di Ciurcio Filho | ptm = localtime(&tb.time); |
1961 | 7d631a11 | Miguel Di Ciurcio Filho | strftime(sn->name, sizeof(sn->name), "vm-%Y%m%d%H%M%S", ptm); |
1962 | 7d631a11 | Miguel Di Ciurcio Filho | #else
|
1963 | d7d9b528 | Blue Swirl | /* cast below needed for OpenBSD where tv_sec is still 'long' */
|
1964 | d7d9b528 | Blue Swirl | localtime_r((const time_t *)&tv.tv_sec, &tm);
|
1965 | 7d631a11 | Miguel Di Ciurcio Filho | strftime(sn->name, sizeof(sn->name), "vm-%Y%m%d%H%M%S", &tm); |
1966 | 7d631a11 | Miguel Di Ciurcio Filho | #endif
|
1967 | 7d631a11 | Miguel Di Ciurcio Filho | } |
1968 | 7d631a11 | Miguel Di Ciurcio Filho | |
1969 | cb499fb2 | Kevin Wolf | /* Delete old snapshots of the same name */
|
1970 | f139a412 | Marcelo Tosatti | if (name && del_existing_snapshots(mon, name) < 0) { |
1971 | cb499fb2 | Kevin Wolf | goto the_end;
|
1972 | cb499fb2 | Kevin Wolf | } |
1973 | cb499fb2 | Kevin Wolf | |
1974 | a672b469 | aliguori | /* save the VM state */
|
1975 | 45566e9c | Christoph Hellwig | f = qemu_fopen_bdrv(bs, 1);
|
1976 | a672b469 | aliguori | if (!f) {
|
1977 | 376253ec | aliguori | monitor_printf(mon, "Could not open VM state file\n");
|
1978 | a672b469 | aliguori | goto the_end;
|
1979 | a672b469 | aliguori | } |
1980 | f327aa0c | Jan Kiszka | ret = qemu_savevm_state(mon, f); |
1981 | 2d22b18f | aliguori | vm_state_size = qemu_ftell(f); |
1982 | a672b469 | aliguori | qemu_fclose(f); |
1983 | a672b469 | aliguori | if (ret < 0) { |
1984 | 376253ec | aliguori | monitor_printf(mon, "Error %d while writing VM\n", ret);
|
1985 | a672b469 | aliguori | goto the_end;
|
1986 | a672b469 | aliguori | } |
1987 | a672b469 | aliguori | |
1988 | a672b469 | aliguori | /* create the snapshots */
|
1989 | a672b469 | aliguori | |
1990 | dbc13590 | Markus Armbruster | bs1 = NULL;
|
1991 | dbc13590 | Markus Armbruster | while ((bs1 = bdrv_next(bs1))) {
|
1992 | feeee5ac | Miguel Di Ciurcio Filho | if (bdrv_can_snapshot(bs1)) {
|
1993 | 2d22b18f | aliguori | /* Write VM state size only to the image that contains the state */
|
1994 | 2d22b18f | aliguori | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0);
|
1995 | a672b469 | aliguori | ret = bdrv_snapshot_create(bs1, sn); |
1996 | a672b469 | aliguori | if (ret < 0) { |
1997 | 376253ec | aliguori | monitor_printf(mon, "Error while creating snapshot on '%s'\n",
|
1998 | 376253ec | aliguori | bdrv_get_device_name(bs1)); |
1999 | a672b469 | aliguori | } |
2000 | a672b469 | aliguori | } |
2001 | a672b469 | aliguori | } |
2002 | a672b469 | aliguori | |
2003 | a672b469 | aliguori | the_end:
|
2004 | a672b469 | aliguori | if (saved_vm_running)
|
2005 | a672b469 | aliguori | vm_start(); |
2006 | a672b469 | aliguori | } |
2007 | a672b469 | aliguori | |
2008 | 03cd4655 | Markus Armbruster | int load_vmstate(const char *name) |
2009 | a672b469 | aliguori | { |
2010 | f0aa7a8b | Miguel Di Ciurcio Filho | BlockDriverState *bs, *bs_vm_state; |
2011 | 2d22b18f | aliguori | QEMUSnapshotInfo sn; |
2012 | a672b469 | aliguori | QEMUFile *f; |
2013 | 751c6a17 | Gerd Hoffmann | int ret;
|
2014 | a672b469 | aliguori | |
2015 | f0aa7a8b | Miguel Di Ciurcio Filho | bs_vm_state = bdrv_snapshots(); |
2016 | f0aa7a8b | Miguel Di Ciurcio Filho | if (!bs_vm_state) {
|
2017 | f0aa7a8b | Miguel Di Ciurcio Filho | error_report("No block device supports snapshots");
|
2018 | f0aa7a8b | Miguel Di Ciurcio Filho | return -ENOTSUP;
|
2019 | f0aa7a8b | Miguel Di Ciurcio Filho | } |
2020 | f0aa7a8b | Miguel Di Ciurcio Filho | |
2021 | f0aa7a8b | Miguel Di Ciurcio Filho | /* Don't even try to load empty VM states */
|
2022 | f0aa7a8b | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_find(bs_vm_state, &sn, name); |
2023 | f0aa7a8b | Miguel Di Ciurcio Filho | if (ret < 0) { |
2024 | f0aa7a8b | Miguel Di Ciurcio Filho | return ret;
|
2025 | f0aa7a8b | Miguel Di Ciurcio Filho | } else if (sn.vm_state_size == 0) { |
2026 | e11480db | Kevin Wolf | error_report("This is a disk-only snapshot. Revert to it offline "
|
2027 | e11480db | Kevin Wolf | "using qemu-img.");
|
2028 | f0aa7a8b | Miguel Di Ciurcio Filho | return -EINVAL;
|
2029 | f0aa7a8b | Miguel Di Ciurcio Filho | } |
2030 | f0aa7a8b | Miguel Di Ciurcio Filho | |
2031 | f0aa7a8b | Miguel Di Ciurcio Filho | /* Verify if there is any device that doesn't support snapshots and is
|
2032 | f0aa7a8b | Miguel Di Ciurcio Filho | writable and check if the requested snapshot is available too. */
|
2033 | dbc13590 | Markus Armbruster | bs = NULL;
|
2034 | dbc13590 | Markus Armbruster | while ((bs = bdrv_next(bs))) {
|
2035 | feeee5ac | Miguel Di Ciurcio Filho | |
2036 | feeee5ac | Miguel Di Ciurcio Filho | if (bdrv_is_removable(bs) || bdrv_is_read_only(bs)) {
|
2037 | feeee5ac | Miguel Di Ciurcio Filho | continue;
|
2038 | feeee5ac | Miguel Di Ciurcio Filho | } |
2039 | feeee5ac | Miguel Di Ciurcio Filho | |
2040 | feeee5ac | Miguel Di Ciurcio Filho | if (!bdrv_can_snapshot(bs)) {
|
2041 | feeee5ac | Miguel Di Ciurcio Filho | error_report("Device '%s' is writable but does not support snapshots.",
|
2042 | feeee5ac | Miguel Di Ciurcio Filho | bdrv_get_device_name(bs)); |
2043 | feeee5ac | Miguel Di Ciurcio Filho | return -ENOTSUP;
|
2044 | feeee5ac | Miguel Di Ciurcio Filho | } |
2045 | feeee5ac | Miguel Di Ciurcio Filho | |
2046 | f0aa7a8b | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_find(bs, &sn, name); |
2047 | f0aa7a8b | Miguel Di Ciurcio Filho | if (ret < 0) { |
2048 | f0aa7a8b | Miguel Di Ciurcio Filho | error_report("Device '%s' does not have the requested snapshot '%s'",
|
2049 | f0aa7a8b | Miguel Di Ciurcio Filho | bdrv_get_device_name(bs), name); |
2050 | f0aa7a8b | Miguel Di Ciurcio Filho | return ret;
|
2051 | f0aa7a8b | Miguel Di Ciurcio Filho | } |
2052 | a672b469 | aliguori | } |
2053 | a672b469 | aliguori | |
2054 | a672b469 | aliguori | /* Flush all IO requests so they don't interfere with the new state. */
|
2055 | a672b469 | aliguori | qemu_aio_flush(); |
2056 | a672b469 | aliguori | |
2057 | f0aa7a8b | Miguel Di Ciurcio Filho | bs = NULL;
|
2058 | f0aa7a8b | Miguel Di Ciurcio Filho | while ((bs = bdrv_next(bs))) {
|
2059 | f0aa7a8b | Miguel Di Ciurcio Filho | if (bdrv_can_snapshot(bs)) {
|
2060 | f0aa7a8b | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_goto(bs, name); |
2061 | a672b469 | aliguori | if (ret < 0) { |
2062 | f0aa7a8b | Miguel Di Ciurcio Filho | error_report("Error %d while activating snapshot '%s' on '%s'",
|
2063 | f0aa7a8b | Miguel Di Ciurcio Filho | ret, name, bdrv_get_device_name(bs)); |
2064 | f0aa7a8b | Miguel Di Ciurcio Filho | return ret;
|
2065 | a672b469 | aliguori | } |
2066 | a672b469 | aliguori | } |
2067 | a672b469 | aliguori | } |
2068 | a672b469 | aliguori | |
2069 | a672b469 | aliguori | /* restore the VM state */
|
2070 | f0aa7a8b | Miguel Di Ciurcio Filho | f = qemu_fopen_bdrv(bs_vm_state, 0);
|
2071 | a672b469 | aliguori | if (!f) {
|
2072 | 1ecda02b | Markus Armbruster | error_report("Could not open VM state file");
|
2073 | 05f2401e | Juan Quintela | return -EINVAL;
|
2074 | a672b469 | aliguori | } |
2075 | f0aa7a8b | Miguel Di Ciurcio Filho | |
2076 | a672b469 | aliguori | ret = qemu_loadvm_state(f); |
2077 | f0aa7a8b | Miguel Di Ciurcio Filho | |
2078 | a672b469 | aliguori | qemu_fclose(f); |
2079 | a672b469 | aliguori | if (ret < 0) { |
2080 | 1ecda02b | Markus Armbruster | error_report("Error %d while loading VM state", ret);
|
2081 | 05f2401e | Juan Quintela | return ret;
|
2082 | a672b469 | aliguori | } |
2083 | f0aa7a8b | Miguel Di Ciurcio Filho | |
2084 | 05f2401e | Juan Quintela | return 0; |
2085 | 7b630349 | Juan Quintela | } |
2086 | 7b630349 | Juan Quintela | |
2087 | d54908a5 | Luiz Capitulino | void do_delvm(Monitor *mon, const QDict *qdict) |
2088 | a672b469 | aliguori | { |
2089 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
2090 | 751c6a17 | Gerd Hoffmann | int ret;
|
2091 | d54908a5 | Luiz Capitulino | const char *name = qdict_get_str(qdict, "name"); |
2092 | a672b469 | aliguori | |
2093 | f9092b10 | Markus Armbruster | bs = bdrv_snapshots(); |
2094 | a672b469 | aliguori | if (!bs) {
|
2095 | 376253ec | aliguori | monitor_printf(mon, "No block device supports snapshots\n");
|
2096 | a672b469 | aliguori | return;
|
2097 | a672b469 | aliguori | } |
2098 | a672b469 | aliguori | |
2099 | dbc13590 | Markus Armbruster | bs1 = NULL;
|
2100 | dbc13590 | Markus Armbruster | while ((bs1 = bdrv_next(bs1))) {
|
2101 | feeee5ac | Miguel Di Ciurcio Filho | if (bdrv_can_snapshot(bs1)) {
|
2102 | a672b469 | aliguori | ret = bdrv_snapshot_delete(bs1, name); |
2103 | a672b469 | aliguori | if (ret < 0) { |
2104 | a672b469 | aliguori | if (ret == -ENOTSUP)
|
2105 | 376253ec | aliguori | monitor_printf(mon, |
2106 | 376253ec | aliguori | "Snapshots not supported on device '%s'\n",
|
2107 | 376253ec | aliguori | bdrv_get_device_name(bs1)); |
2108 | a672b469 | aliguori | else
|
2109 | 376253ec | aliguori | monitor_printf(mon, "Error %d while deleting snapshot on "
|
2110 | 376253ec | aliguori | "'%s'\n", ret, bdrv_get_device_name(bs1));
|
2111 | a672b469 | aliguori | } |
2112 | a672b469 | aliguori | } |
2113 | a672b469 | aliguori | } |
2114 | a672b469 | aliguori | } |
2115 | a672b469 | aliguori | |
2116 | 376253ec | aliguori | void do_info_snapshots(Monitor *mon)
|
2117 | a672b469 | aliguori | { |
2118 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
2119 | f9209915 | Miguel Di Ciurcio Filho | QEMUSnapshotInfo *sn_tab, *sn, s, *sn_info = &s; |
2120 | f9209915 | Miguel Di Ciurcio Filho | int nb_sns, i, ret, available;
|
2121 | f9209915 | Miguel Di Ciurcio Filho | int total;
|
2122 | f9209915 | Miguel Di Ciurcio Filho | int *available_snapshots;
|
2123 | a672b469 | aliguori | char buf[256]; |
2124 | a672b469 | aliguori | |
2125 | f9092b10 | Markus Armbruster | bs = bdrv_snapshots(); |
2126 | a672b469 | aliguori | if (!bs) {
|
2127 | 376253ec | aliguori | monitor_printf(mon, "No available block device supports snapshots\n");
|
2128 | a672b469 | aliguori | return;
|
2129 | a672b469 | aliguori | } |
2130 | a672b469 | aliguori | |
2131 | a672b469 | aliguori | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
2132 | a672b469 | aliguori | if (nb_sns < 0) { |
2133 | 376253ec | aliguori | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns);
|
2134 | a672b469 | aliguori | return;
|
2135 | a672b469 | aliguori | } |
2136 | f9209915 | Miguel Di Ciurcio Filho | |
2137 | f9209915 | Miguel Di Ciurcio Filho | if (nb_sns == 0) { |
2138 | f9209915 | Miguel Di Ciurcio Filho | monitor_printf(mon, "There is no snapshot available.\n");
|
2139 | f9209915 | Miguel Di Ciurcio Filho | return;
|
2140 | f9209915 | Miguel Di Ciurcio Filho | } |
2141 | f9209915 | Miguel Di Ciurcio Filho | |
2142 | f9209915 | Miguel Di Ciurcio Filho | available_snapshots = qemu_mallocz(sizeof(int) * nb_sns); |
2143 | f9209915 | Miguel Di Ciurcio Filho | total = 0;
|
2144 | f9209915 | Miguel Di Ciurcio Filho | for (i = 0; i < nb_sns; i++) { |
2145 | a672b469 | aliguori | sn = &sn_tab[i]; |
2146 | f9209915 | Miguel Di Ciurcio Filho | available = 1;
|
2147 | f9209915 | Miguel Di Ciurcio Filho | bs1 = NULL;
|
2148 | f9209915 | Miguel Di Ciurcio Filho | |
2149 | f9209915 | Miguel Di Ciurcio Filho | while ((bs1 = bdrv_next(bs1))) {
|
2150 | f9209915 | Miguel Di Ciurcio Filho | if (bdrv_can_snapshot(bs1) && bs1 != bs) {
|
2151 | f9209915 | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_find(bs1, sn_info, sn->id_str); |
2152 | f9209915 | Miguel Di Ciurcio Filho | if (ret < 0) { |
2153 | f9209915 | Miguel Di Ciurcio Filho | available = 0;
|
2154 | f9209915 | Miguel Di Ciurcio Filho | break;
|
2155 | f9209915 | Miguel Di Ciurcio Filho | } |
2156 | f9209915 | Miguel Di Ciurcio Filho | } |
2157 | f9209915 | Miguel Di Ciurcio Filho | } |
2158 | f9209915 | Miguel Di Ciurcio Filho | |
2159 | f9209915 | Miguel Di Ciurcio Filho | if (available) {
|
2160 | f9209915 | Miguel Di Ciurcio Filho | available_snapshots[total] = i; |
2161 | f9209915 | Miguel Di Ciurcio Filho | total++; |
2162 | f9209915 | Miguel Di Ciurcio Filho | } |
2163 | a672b469 | aliguori | } |
2164 | f9209915 | Miguel Di Ciurcio Filho | |
2165 | f9209915 | Miguel Di Ciurcio Filho | if (total > 0) { |
2166 | f9209915 | Miguel Di Ciurcio Filho | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); |
2167 | f9209915 | Miguel Di Ciurcio Filho | for (i = 0; i < total; i++) { |
2168 | f9209915 | Miguel Di Ciurcio Filho | sn = &sn_tab[available_snapshots[i]]; |
2169 | f9209915 | Miguel Di Ciurcio Filho | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
2170 | f9209915 | Miguel Di Ciurcio Filho | } |
2171 | f9209915 | Miguel Di Ciurcio Filho | } else {
|
2172 | f9209915 | Miguel Di Ciurcio Filho | monitor_printf(mon, "There is no suitable snapshot available\n");
|
2173 | f9209915 | Miguel Di Ciurcio Filho | } |
2174 | f9209915 | Miguel Di Ciurcio Filho | |
2175 | a672b469 | aliguori | qemu_free(sn_tab); |
2176 | f9209915 | Miguel Di Ciurcio Filho | qemu_free(available_snapshots); |
2177 | f9209915 | Miguel Di Ciurcio Filho | |
2178 | a672b469 | aliguori | } |