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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 | 2ff68d07 | Paolo Bonzini | #include "qemu-timer.h" |
85 | 17a4663e | Blue Swirl | #include "cpus.h" |
86 | c5705a77 | Avi Kivity | #include "memory.h" |
87 | 511d2b14 | blueswir1 | |
88 | a672b469 | aliguori | #define SELF_ANNOUNCE_ROUNDS 5 |
89 | a672b469 | aliguori | |
90 | 18995b98 | Nolan | #ifndef ETH_P_RARP
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91 | f8778a77 | Stefan Berger | #define ETH_P_RARP 0x8035 |
92 | 18995b98 | Nolan | #endif
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93 | 18995b98 | Nolan | #define ARP_HTYPE_ETH 0x0001 |
94 | 18995b98 | Nolan | #define ARP_PTYPE_IP 0x0800 |
95 | 18995b98 | Nolan | #define ARP_OP_REQUEST_REV 0x3 |
96 | 18995b98 | Nolan | |
97 | 18995b98 | Nolan | static int announce_self_create(uint8_t *buf, |
98 | a672b469 | aliguori | uint8_t *mac_addr) |
99 | a672b469 | aliguori | { |
100 | 18995b98 | Nolan | /* Ethernet header. */
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101 | 18995b98 | Nolan | memset(buf, 0xff, 6); /* destination MAC addr */ |
102 | 18995b98 | Nolan | memcpy(buf + 6, mac_addr, 6); /* source MAC addr */ |
103 | 18995b98 | Nolan | *(uint16_t *)(buf + 12) = htons(ETH_P_RARP); /* ethertype */ |
104 | 18995b98 | Nolan | |
105 | 18995b98 | Nolan | /* RARP header. */
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106 | 18995b98 | Nolan | *(uint16_t *)(buf + 14) = htons(ARP_HTYPE_ETH); /* hardware addr space */ |
107 | 18995b98 | Nolan | *(uint16_t *)(buf + 16) = htons(ARP_PTYPE_IP); /* protocol addr space */ |
108 | 18995b98 | Nolan | *(buf + 18) = 6; /* hardware addr length (ethernet) */ |
109 | 18995b98 | Nolan | *(buf + 19) = 4; /* protocol addr length (IPv4) */ |
110 | 18995b98 | Nolan | *(uint16_t *)(buf + 20) = htons(ARP_OP_REQUEST_REV); /* opcode */ |
111 | 18995b98 | Nolan | memcpy(buf + 22, mac_addr, 6); /* source hw addr */ |
112 | 18995b98 | Nolan | memset(buf + 28, 0x00, 4); /* source protocol addr */ |
113 | 18995b98 | Nolan | memcpy(buf + 32, mac_addr, 6); /* target hw addr */ |
114 | 18995b98 | Nolan | memset(buf + 38, 0x00, 4); /* target protocol addr */ |
115 | 18995b98 | Nolan | |
116 | 18995b98 | Nolan | /* Padding to get up to 60 bytes (ethernet min packet size, minus FCS). */
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117 | 18995b98 | Nolan | memset(buf + 42, 0x00, 18); |
118 | 18995b98 | Nolan | |
119 | 18995b98 | Nolan | return 60; /* len (FCS will be added by hardware) */ |
120 | a672b469 | aliguori | } |
121 | a672b469 | aliguori | |
122 | f401ca22 | Mark McLoughlin | static void qemu_announce_self_iter(NICState *nic, void *opaque) |
123 | a672b469 | aliguori | { |
124 | 18995b98 | Nolan | uint8_t buf[60];
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125 | f401ca22 | Mark McLoughlin | int len;
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126 | f401ca22 | Mark McLoughlin | |
127 | f401ca22 | Mark McLoughlin | len = announce_self_create(buf, nic->conf->macaddr.a); |
128 | f401ca22 | Mark McLoughlin | |
129 | f401ca22 | Mark McLoughlin | qemu_send_packet_raw(&nic->nc, buf, len); |
130 | f401ca22 | Mark McLoughlin | } |
131 | f401ca22 | Mark McLoughlin | |
132 | f401ca22 | Mark McLoughlin | |
133 | f401ca22 | Mark McLoughlin | static void qemu_announce_self_once(void *opaque) |
134 | f401ca22 | Mark McLoughlin | { |
135 | ed8b330b | Gleb Natapov | static int count = SELF_ANNOUNCE_ROUNDS; |
136 | ed8b330b | Gleb Natapov | QEMUTimer *timer = *(QEMUTimer **)opaque; |
137 | a672b469 | aliguori | |
138 | f401ca22 | Mark McLoughlin | qemu_foreach_nic(qemu_announce_self_iter, NULL);
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139 | f401ca22 | Mark McLoughlin | |
140 | 18995b98 | Nolan | if (--count) {
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141 | 18995b98 | Nolan | /* delay 50ms, 150ms, 250ms, ... */
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142 | 7bd427d8 | Paolo Bonzini | qemu_mod_timer(timer, qemu_get_clock_ms(rt_clock) + |
143 | 18995b98 | Nolan | 50 + (SELF_ANNOUNCE_ROUNDS - count - 1) * 100); |
144 | ed8b330b | Gleb Natapov | } else {
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145 | ed8b330b | Gleb Natapov | qemu_del_timer(timer); |
146 | ed8b330b | Gleb Natapov | qemu_free_timer(timer); |
147 | ed8b330b | Gleb Natapov | } |
148 | ed8b330b | Gleb Natapov | } |
149 | ed8b330b | Gleb Natapov | |
150 | ed8b330b | Gleb Natapov | void qemu_announce_self(void) |
151 | ed8b330b | Gleb Natapov | { |
152 | ed8b330b | Gleb Natapov | static QEMUTimer *timer;
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153 | 7bd427d8 | Paolo Bonzini | timer = qemu_new_timer_ms(rt_clock, qemu_announce_self_once, &timer); |
154 | ed8b330b | Gleb Natapov | qemu_announce_self_once(&timer); |
155 | a672b469 | aliguori | } |
156 | a672b469 | aliguori | |
157 | a672b469 | aliguori | /***********************************************************/
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158 | a672b469 | aliguori | /* savevm/loadvm support */
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159 | a672b469 | aliguori | |
160 | a672b469 | aliguori | #define IO_BUF_SIZE 32768 |
161 | a672b469 | aliguori | |
162 | a672b469 | aliguori | struct QEMUFile {
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163 | a672b469 | aliguori | QEMUFilePutBufferFunc *put_buffer; |
164 | a672b469 | aliguori | QEMUFileGetBufferFunc *get_buffer; |
165 | a672b469 | aliguori | QEMUFileCloseFunc *close; |
166 | a672b469 | aliguori | QEMUFileRateLimit *rate_limit; |
167 | 19629537 | Glauber Costa | QEMUFileSetRateLimit *set_rate_limit; |
168 | c163b5ca | lirans@il.ibm.com | QEMUFileGetRateLimit *get_rate_limit; |
169 | a672b469 | aliguori | void *opaque;
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170 | a672b469 | aliguori | int is_write;
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171 | a672b469 | aliguori | |
172 | a672b469 | aliguori | int64_t buf_offset; /* start of buffer when writing, end of buffer
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173 | a672b469 | aliguori | when reading */
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174 | a672b469 | aliguori | int buf_index;
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175 | a672b469 | aliguori | int buf_size; /* 0 when writing */ |
176 | a672b469 | aliguori | uint8_t buf[IO_BUF_SIZE]; |
177 | a672b469 | aliguori | |
178 | 3961b4dd | Juan Quintela | int last_error;
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179 | a672b469 | aliguori | }; |
180 | a672b469 | aliguori | |
181 | 7f79dd28 | Paolo Bonzini | typedef struct QEMUFileStdio |
182 | a672b469 | aliguori | { |
183 | 7f79dd28 | Paolo Bonzini | FILE *stdio_file; |
184 | a672b469 | aliguori | QEMUFile *file; |
185 | 7f79dd28 | Paolo Bonzini | } QEMUFileStdio; |
186 | a672b469 | aliguori | |
187 | a672b469 | aliguori | typedef struct QEMUFileSocket |
188 | a672b469 | aliguori | { |
189 | a672b469 | aliguori | int fd;
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190 | a672b469 | aliguori | QEMUFile *file; |
191 | a672b469 | aliguori | } QEMUFileSocket; |
192 | a672b469 | aliguori | |
193 | a672b469 | aliguori | static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
194 | a672b469 | aliguori | { |
195 | a672b469 | aliguori | QEMUFileSocket *s = opaque; |
196 | a672b469 | aliguori | ssize_t len; |
197 | a672b469 | aliguori | |
198 | a672b469 | aliguori | do {
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199 | 00aa0040 | Blue Swirl | len = qemu_recv(s->fd, buf, size, 0);
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200 | a672b469 | aliguori | } while (len == -1 && socket_error() == EINTR); |
201 | a672b469 | aliguori | |
202 | a672b469 | aliguori | if (len == -1) |
203 | a672b469 | aliguori | len = -socket_error(); |
204 | a672b469 | aliguori | |
205 | a672b469 | aliguori | return len;
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206 | a672b469 | aliguori | } |
207 | a672b469 | aliguori | |
208 | a672b469 | aliguori | static int socket_close(void *opaque) |
209 | a672b469 | aliguori | { |
210 | a672b469 | aliguori | QEMUFileSocket *s = opaque; |
211 | 7267c094 | Anthony Liguori | g_free(s); |
212 | a672b469 | aliguori | return 0; |
213 | a672b469 | aliguori | } |
214 | a672b469 | aliguori | |
215 | 7f79dd28 | Paolo Bonzini | static int stdio_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size) |
216 | a672b469 | aliguori | { |
217 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
218 | 7f79dd28 | Paolo Bonzini | return fwrite(buf, 1, size, s->stdio_file); |
219 | a672b469 | aliguori | } |
220 | a672b469 | aliguori | |
221 | 7f79dd28 | Paolo Bonzini | static int stdio_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
222 | a672b469 | aliguori | { |
223 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
224 | 7f79dd28 | Paolo Bonzini | FILE *fp = s->stdio_file; |
225 | 8a67ec4d | Uri Lublin | int bytes;
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226 | 8a67ec4d | Uri Lublin | |
227 | 8a67ec4d | Uri Lublin | do {
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228 | 8a67ec4d | Uri Lublin | clearerr(fp); |
229 | 8a67ec4d | Uri Lublin | bytes = fread(buf, 1, size, fp);
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230 | 8a67ec4d | Uri Lublin | } while ((bytes == 0) && ferror(fp) && (errno == EINTR)); |
231 | 8a67ec4d | Uri Lublin | return bytes;
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232 | a672b469 | aliguori | } |
233 | a672b469 | aliguori | |
234 | 7f79dd28 | Paolo Bonzini | static int stdio_pclose(void *opaque) |
235 | 7f79dd28 | Paolo Bonzini | { |
236 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
237 | 41ef56e6 | Anthony Liguori | int ret;
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238 | 41ef56e6 | Anthony Liguori | ret = pclose(s->stdio_file); |
239 | 26f1af0a | Eduardo Habkost | if (ret == -1) { |
240 | 26f1af0a | Eduardo Habkost | ret = -errno; |
241 | 26f1af0a | Eduardo Habkost | } |
242 | 7267c094 | Anthony Liguori | g_free(s); |
243 | 41ef56e6 | Anthony Liguori | return ret;
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244 | 7f79dd28 | Paolo Bonzini | } |
245 | 7f79dd28 | Paolo Bonzini | |
246 | 7f79dd28 | Paolo Bonzini | static int stdio_fclose(void *opaque) |
247 | a672b469 | aliguori | { |
248 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
249 | 0e286705 | Eduardo Habkost | int ret = 0; |
250 | 0e286705 | Eduardo Habkost | if (fclose(s->stdio_file) == EOF) { |
251 | 0e286705 | Eduardo Habkost | ret = -errno; |
252 | 0e286705 | Eduardo Habkost | } |
253 | 7267c094 | Anthony Liguori | g_free(s); |
254 | 0e286705 | Eduardo Habkost | return ret;
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255 | a672b469 | aliguori | } |
256 | a672b469 | aliguori | |
257 | 7f79dd28 | Paolo Bonzini | QEMUFile *qemu_popen(FILE *stdio_file, const char *mode) |
258 | a672b469 | aliguori | { |
259 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s; |
260 | a672b469 | aliguori | |
261 | 7f79dd28 | Paolo Bonzini | if (stdio_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) { |
262 | a672b469 | aliguori | fprintf(stderr, "qemu_popen: Argument validity check failed\n");
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263 | a672b469 | aliguori | return NULL; |
264 | a672b469 | aliguori | } |
265 | a672b469 | aliguori | |
266 | 7267c094 | Anthony Liguori | s = g_malloc0(sizeof(QEMUFileStdio));
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267 | a672b469 | aliguori | |
268 | 7f79dd28 | Paolo Bonzini | s->stdio_file = stdio_file; |
269 | a672b469 | aliguori | |
270 | a672b469 | aliguori | if(mode[0] == 'r') { |
271 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_pclose,
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272 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
273 | a672b469 | aliguori | } else {
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274 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_pclose,
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275 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
276 | a672b469 | aliguori | } |
277 | a672b469 | aliguori | return s->file;
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278 | a672b469 | aliguori | } |
279 | a672b469 | aliguori | |
280 | a672b469 | aliguori | QEMUFile *qemu_popen_cmd(const char *command, const char *mode) |
281 | a672b469 | aliguori | { |
282 | a672b469 | aliguori | FILE *popen_file; |
283 | a672b469 | aliguori | |
284 | a672b469 | aliguori | popen_file = popen(command, mode); |
285 | a672b469 | aliguori | if(popen_file == NULL) { |
286 | a672b469 | aliguori | return NULL; |
287 | a672b469 | aliguori | } |
288 | a672b469 | aliguori | |
289 | a672b469 | aliguori | return qemu_popen(popen_file, mode);
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290 | a672b469 | aliguori | } |
291 | a672b469 | aliguori | |
292 | 7f79dd28 | Paolo Bonzini | int qemu_stdio_fd(QEMUFile *f)
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293 | 8a43b1ea | Chris Lalancette | { |
294 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *p; |
295 | 8a43b1ea | Chris Lalancette | int fd;
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296 | 8a43b1ea | Chris Lalancette | |
297 | 7f79dd28 | Paolo Bonzini | p = (QEMUFileStdio *)f->opaque; |
298 | 7f79dd28 | Paolo Bonzini | fd = fileno(p->stdio_file); |
299 | 8a43b1ea | Chris Lalancette | |
300 | 8a43b1ea | Chris Lalancette | return fd;
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301 | 8a43b1ea | Chris Lalancette | } |
302 | 8a43b1ea | Chris Lalancette | |
303 | 5ac1fad3 | Paolo Bonzini | QEMUFile *qemu_fdopen(int fd, const char *mode) |
304 | 5ac1fad3 | Paolo Bonzini | { |
305 | 5ac1fad3 | Paolo Bonzini | QEMUFileStdio *s; |
306 | 5ac1fad3 | Paolo Bonzini | |
307 | 5ac1fad3 | Paolo Bonzini | if (mode == NULL || |
308 | 5ac1fad3 | Paolo Bonzini | (mode[0] != 'r' && mode[0] != 'w') || |
309 | 5ac1fad3 | Paolo Bonzini | mode[1] != 'b' || mode[2] != 0) { |
310 | 5ac1fad3 | Paolo Bonzini | fprintf(stderr, "qemu_fdopen: Argument validity check failed\n");
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311 | 5ac1fad3 | Paolo Bonzini | return NULL; |
312 | 5ac1fad3 | Paolo Bonzini | } |
313 | 5ac1fad3 | Paolo Bonzini | |
314 | 7267c094 | Anthony Liguori | s = g_malloc0(sizeof(QEMUFileStdio));
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315 | 5ac1fad3 | Paolo Bonzini | s->stdio_file = fdopen(fd, mode); |
316 | 5ac1fad3 | Paolo Bonzini | if (!s->stdio_file)
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317 | 5ac1fad3 | Paolo Bonzini | goto fail;
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318 | 5ac1fad3 | Paolo Bonzini | |
319 | 5ac1fad3 | Paolo Bonzini | if(mode[0] == 'r') { |
320 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_fclose,
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321 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
322 | 5ac1fad3 | Paolo Bonzini | } else {
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323 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_fclose,
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324 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
325 | 5ac1fad3 | Paolo Bonzini | } |
326 | 5ac1fad3 | Paolo Bonzini | return s->file;
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327 | 5ac1fad3 | Paolo Bonzini | |
328 | 5ac1fad3 | Paolo Bonzini | fail:
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329 | 7267c094 | Anthony Liguori | g_free(s); |
330 | 5ac1fad3 | Paolo Bonzini | return NULL; |
331 | 5ac1fad3 | Paolo Bonzini | } |
332 | 5ac1fad3 | Paolo Bonzini | |
333 | a672b469 | aliguori | QEMUFile *qemu_fopen_socket(int fd)
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334 | a672b469 | aliguori | { |
335 | 7267c094 | Anthony Liguori | QEMUFileSocket *s = g_malloc0(sizeof(QEMUFileSocket));
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336 | a672b469 | aliguori | |
337 | a672b469 | aliguori | s->fd = fd; |
338 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close,
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339 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
340 | a672b469 | aliguori | return s->file;
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341 | a672b469 | aliguori | } |
342 | a672b469 | aliguori | |
343 | a672b469 | aliguori | static int file_put_buffer(void *opaque, const uint8_t *buf, |
344 | a672b469 | aliguori | int64_t pos, int size)
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345 | a672b469 | aliguori | { |
346 | a672b469 | aliguori | QEMUFileStdio *s = opaque; |
347 | 7f79dd28 | Paolo Bonzini | fseek(s->stdio_file, pos, SEEK_SET); |
348 | 5fdb3aa1 | Kirill A. Shutemov | return fwrite(buf, 1, size, s->stdio_file); |
349 | a672b469 | aliguori | } |
350 | a672b469 | aliguori | |
351 | a672b469 | aliguori | static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
352 | a672b469 | aliguori | { |
353 | a672b469 | aliguori | QEMUFileStdio *s = opaque; |
354 | 7f79dd28 | Paolo Bonzini | fseek(s->stdio_file, pos, SEEK_SET); |
355 | 7f79dd28 | Paolo Bonzini | return fread(buf, 1, size, s->stdio_file); |
356 | a672b469 | aliguori | } |
357 | a672b469 | aliguori | |
358 | a672b469 | aliguori | QEMUFile *qemu_fopen(const char *filename, const char *mode) |
359 | a672b469 | aliguori | { |
360 | a672b469 | aliguori | QEMUFileStdio *s; |
361 | a672b469 | aliguori | |
362 | 7f79dd28 | Paolo Bonzini | if (mode == NULL || |
363 | 7f79dd28 | Paolo Bonzini | (mode[0] != 'r' && mode[0] != 'w') || |
364 | 7f79dd28 | Paolo Bonzini | mode[1] != 'b' || mode[2] != 0) { |
365 | 090414a3 | Blue Swirl | fprintf(stderr, "qemu_fopen: Argument validity check failed\n");
|
366 | 7f79dd28 | Paolo Bonzini | return NULL; |
367 | 7f79dd28 | Paolo Bonzini | } |
368 | 7f79dd28 | Paolo Bonzini | |
369 | 7267c094 | Anthony Liguori | s = g_malloc0(sizeof(QEMUFileStdio));
|
370 | a672b469 | aliguori | |
371 | 7f79dd28 | Paolo Bonzini | s->stdio_file = fopen(filename, mode); |
372 | 7f79dd28 | Paolo Bonzini | if (!s->stdio_file)
|
373 | a672b469 | aliguori | goto fail;
|
374 | c163b5ca | lirans@il.ibm.com | |
375 | 7f79dd28 | Paolo Bonzini | if(mode[0] == 'w') { |
376 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, file_put_buffer, NULL, stdio_fclose,
|
377 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
378 | 7f79dd28 | Paolo Bonzini | } else {
|
379 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, NULL, file_get_buffer, stdio_fclose,
|
380 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
381 | 7f79dd28 | Paolo Bonzini | } |
382 | 7f79dd28 | Paolo Bonzini | return s->file;
|
383 | a672b469 | aliguori | fail:
|
384 | 7267c094 | Anthony Liguori | g_free(s); |
385 | a672b469 | aliguori | return NULL; |
386 | a672b469 | aliguori | } |
387 | a672b469 | aliguori | |
388 | 178e08a5 | aliguori | static int block_put_buffer(void *opaque, const uint8_t *buf, |
389 | a672b469 | aliguori | int64_t pos, int size)
|
390 | a672b469 | aliguori | { |
391 | 45566e9c | Christoph Hellwig | bdrv_save_vmstate(opaque, buf, pos, size); |
392 | a672b469 | aliguori | return size;
|
393 | a672b469 | aliguori | } |
394 | a672b469 | aliguori | |
395 | 178e08a5 | aliguori | static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
396 | a672b469 | aliguori | { |
397 | 45566e9c | Christoph Hellwig | return bdrv_load_vmstate(opaque, buf, pos, size);
|
398 | a672b469 | aliguori | } |
399 | a672b469 | aliguori | |
400 | a672b469 | aliguori | static int bdrv_fclose(void *opaque) |
401 | a672b469 | aliguori | { |
402 | a672b469 | aliguori | return 0; |
403 | a672b469 | aliguori | } |
404 | a672b469 | aliguori | |
405 | 45566e9c | Christoph Hellwig | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable) |
406 | a672b469 | aliguori | { |
407 | a672b469 | aliguori | if (is_writable)
|
408 | c163b5ca | lirans@il.ibm.com | return qemu_fopen_ops(bs, block_put_buffer, NULL, bdrv_fclose, |
409 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
410 | c163b5ca | lirans@il.ibm.com | return qemu_fopen_ops(bs, NULL, block_get_buffer, bdrv_fclose, NULL, NULL, NULL); |
411 | a672b469 | aliguori | } |
412 | a672b469 | aliguori | |
413 | a672b469 | aliguori | QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer,
|
414 | a672b469 | aliguori | QEMUFileGetBufferFunc *get_buffer, |
415 | a672b469 | aliguori | QEMUFileCloseFunc *close, |
416 | 19629537 | Glauber Costa | QEMUFileRateLimit *rate_limit, |
417 | c163b5ca | lirans@il.ibm.com | QEMUFileSetRateLimit *set_rate_limit, |
418 | c163b5ca | lirans@il.ibm.com | QEMUFileGetRateLimit *get_rate_limit) |
419 | a672b469 | aliguori | { |
420 | a672b469 | aliguori | QEMUFile *f; |
421 | a672b469 | aliguori | |
422 | 7267c094 | Anthony Liguori | f = g_malloc0(sizeof(QEMUFile));
|
423 | a672b469 | aliguori | |
424 | a672b469 | aliguori | f->opaque = opaque; |
425 | a672b469 | aliguori | f->put_buffer = put_buffer; |
426 | a672b469 | aliguori | f->get_buffer = get_buffer; |
427 | a672b469 | aliguori | f->close = close; |
428 | a672b469 | aliguori | f->rate_limit = rate_limit; |
429 | 19629537 | Glauber Costa | f->set_rate_limit = set_rate_limit; |
430 | c163b5ca | lirans@il.ibm.com | f->get_rate_limit = get_rate_limit; |
431 | a672b469 | aliguori | f->is_write = 0;
|
432 | a672b469 | aliguori | |
433 | a672b469 | aliguori | return f;
|
434 | a672b469 | aliguori | } |
435 | a672b469 | aliguori | |
436 | 624b9cc2 | Juan Quintela | int qemu_file_get_error(QEMUFile *f)
|
437 | a672b469 | aliguori | { |
438 | 3961b4dd | Juan Quintela | return f->last_error;
|
439 | a672b469 | aliguori | } |
440 | a672b469 | aliguori | |
441 | dcd1d224 | Juan Quintela | void qemu_file_set_error(QEMUFile *f, int ret) |
442 | 4dabe248 | aliguori | { |
443 | 3961b4dd | Juan Quintela | f->last_error = ret; |
444 | 4dabe248 | aliguori | } |
445 | 4dabe248 | aliguori | |
446 | d82ca915 | Eduardo Habkost | /** Sets last_error conditionally
|
447 | d82ca915 | Eduardo Habkost | *
|
448 | d82ca915 | Eduardo Habkost | * Sets last_error only if ret is negative _and_ no error
|
449 | d82ca915 | Eduardo Habkost | * was set before.
|
450 | d82ca915 | Eduardo Habkost | */
|
451 | d82ca915 | Eduardo Habkost | static void qemu_file_set_if_error(QEMUFile *f, int ret) |
452 | d82ca915 | Eduardo Habkost | { |
453 | d82ca915 | Eduardo Habkost | if (ret < 0 && !f->last_error) { |
454 | d82ca915 | Eduardo Habkost | qemu_file_set_error(f, ret); |
455 | d82ca915 | Eduardo Habkost | } |
456 | d82ca915 | Eduardo Habkost | } |
457 | d82ca915 | Eduardo Habkost | |
458 | d82ca915 | Eduardo Habkost | /** Flushes QEMUFile buffer
|
459 | d82ca915 | Eduardo Habkost | *
|
460 | d82ca915 | Eduardo Habkost | * In case of error, last_error is set.
|
461 | d82ca915 | Eduardo Habkost | */
|
462 | a672b469 | aliguori | void qemu_fflush(QEMUFile *f)
|
463 | a672b469 | aliguori | { |
464 | a672b469 | aliguori | if (!f->put_buffer)
|
465 | a672b469 | aliguori | return;
|
466 | a672b469 | aliguori | |
467 | a672b469 | aliguori | if (f->is_write && f->buf_index > 0) { |
468 | a672b469 | aliguori | int len;
|
469 | a672b469 | aliguori | |
470 | a672b469 | aliguori | len = f->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index); |
471 | a672b469 | aliguori | if (len > 0) |
472 | a672b469 | aliguori | f->buf_offset += f->buf_index; |
473 | a672b469 | aliguori | else
|
474 | c29110d5 | Eduardo Habkost | qemu_file_set_error(f, -EINVAL); |
475 | a672b469 | aliguori | f->buf_index = 0;
|
476 | a672b469 | aliguori | } |
477 | a672b469 | aliguori | } |
478 | a672b469 | aliguori | |
479 | a672b469 | aliguori | static void qemu_fill_buffer(QEMUFile *f) |
480 | a672b469 | aliguori | { |
481 | a672b469 | aliguori | int len;
|
482 | 0046c45b | Juan Quintela | int pending;
|
483 | a672b469 | aliguori | |
484 | a672b469 | aliguori | if (!f->get_buffer)
|
485 | a672b469 | aliguori | return;
|
486 | a672b469 | aliguori | |
487 | a672b469 | aliguori | if (f->is_write)
|
488 | a672b469 | aliguori | abort(); |
489 | a672b469 | aliguori | |
490 | 0046c45b | Juan Quintela | pending = f->buf_size - f->buf_index; |
491 | 0046c45b | Juan Quintela | if (pending > 0) { |
492 | 0046c45b | Juan Quintela | memmove(f->buf, f->buf + f->buf_index, pending); |
493 | 0046c45b | Juan Quintela | } |
494 | 0046c45b | Juan Quintela | f->buf_index = 0;
|
495 | 0046c45b | Juan Quintela | f->buf_size = pending; |
496 | 0046c45b | Juan Quintela | |
497 | 0046c45b | Juan Quintela | len = f->get_buffer(f->opaque, f->buf + pending, f->buf_offset, |
498 | 0046c45b | Juan Quintela | IO_BUF_SIZE - pending); |
499 | a672b469 | aliguori | if (len > 0) { |
500 | 0046c45b | Juan Quintela | f->buf_size += len; |
501 | a672b469 | aliguori | f->buf_offset += len; |
502 | fa39a30f | Juan Quintela | } else if (len == 0) { |
503 | fa39a30f | Juan Quintela | f->last_error = -EIO; |
504 | a672b469 | aliguori | } else if (len != -EAGAIN) |
505 | c29110d5 | Eduardo Habkost | qemu_file_set_error(f, len); |
506 | a672b469 | aliguori | } |
507 | a672b469 | aliguori | |
508 | d82ca915 | Eduardo Habkost | /** Calls close function and set last_error if needed
|
509 | d82ca915 | Eduardo Habkost | *
|
510 | d82ca915 | Eduardo Habkost | * Internal function. qemu_fflush() must be called before this.
|
511 | d82ca915 | Eduardo Habkost | *
|
512 | d82ca915 | Eduardo Habkost | * Returns f->close() return value, or 0 if close function is not set.
|
513 | d82ca915 | Eduardo Habkost | */
|
514 | d82ca915 | Eduardo Habkost | static int qemu_close(QEMUFile *f) |
515 | a672b469 | aliguori | { |
516 | a672b469 | aliguori | int ret = 0; |
517 | d82ca915 | Eduardo Habkost | if (f->close) {
|
518 | a672b469 | aliguori | ret = f->close(f->opaque); |
519 | d82ca915 | Eduardo Habkost | qemu_file_set_if_error(f, ret); |
520 | d82ca915 | Eduardo Habkost | } |
521 | d82ca915 | Eduardo Habkost | return ret;
|
522 | d82ca915 | Eduardo Habkost | } |
523 | d82ca915 | Eduardo Habkost | |
524 | d82ca915 | Eduardo Habkost | /** Closes the file
|
525 | d82ca915 | Eduardo Habkost | *
|
526 | d82ca915 | Eduardo Habkost | * Returns negative error value if any error happened on previous operations or
|
527 | d82ca915 | Eduardo Habkost | * while closing the file. Returns 0 or positive number on success.
|
528 | d82ca915 | Eduardo Habkost | *
|
529 | d82ca915 | Eduardo Habkost | * The meaning of return value on success depends on the specific backend
|
530 | d82ca915 | Eduardo Habkost | * being used.
|
531 | d82ca915 | Eduardo Habkost | */
|
532 | d82ca915 | Eduardo Habkost | int qemu_fclose(QEMUFile *f)
|
533 | d82ca915 | Eduardo Habkost | { |
534 | d82ca915 | Eduardo Habkost | int ret;
|
535 | d82ca915 | Eduardo Habkost | qemu_fflush(f); |
536 | d82ca915 | Eduardo Habkost | ret = qemu_close(f); |
537 | d82ca915 | Eduardo Habkost | /* If any error was spotted before closing, we should report it
|
538 | d82ca915 | Eduardo Habkost | * instead of the close() return value.
|
539 | d82ca915 | Eduardo Habkost | */
|
540 | d82ca915 | Eduardo Habkost | if (f->last_error) {
|
541 | d82ca915 | Eduardo Habkost | ret = f->last_error; |
542 | d82ca915 | Eduardo Habkost | } |
543 | 7267c094 | Anthony Liguori | g_free(f); |
544 | a672b469 | aliguori | return ret;
|
545 | a672b469 | aliguori | } |
546 | a672b469 | aliguori | |
547 | a672b469 | aliguori | void qemu_file_put_notify(QEMUFile *f)
|
548 | a672b469 | aliguori | { |
549 | a672b469 | aliguori | f->put_buffer(f->opaque, NULL, 0, 0); |
550 | a672b469 | aliguori | } |
551 | a672b469 | aliguori | |
552 | a672b469 | aliguori | void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size) |
553 | a672b469 | aliguori | { |
554 | a672b469 | aliguori | int l;
|
555 | a672b469 | aliguori | |
556 | 3961b4dd | Juan Quintela | if (!f->last_error && f->is_write == 0 && f->buf_index > 0) { |
557 | a672b469 | aliguori | fprintf(stderr, |
558 | a672b469 | aliguori | "Attempted to write to buffer while read buffer is not empty\n");
|
559 | a672b469 | aliguori | abort(); |
560 | a672b469 | aliguori | } |
561 | a672b469 | aliguori | |
562 | 3961b4dd | Juan Quintela | while (!f->last_error && size > 0) { |
563 | a672b469 | aliguori | l = IO_BUF_SIZE - f->buf_index; |
564 | a672b469 | aliguori | if (l > size)
|
565 | a672b469 | aliguori | l = size; |
566 | a672b469 | aliguori | memcpy(f->buf + f->buf_index, buf, l); |
567 | a672b469 | aliguori | f->is_write = 1;
|
568 | a672b469 | aliguori | f->buf_index += l; |
569 | a672b469 | aliguori | buf += l; |
570 | a672b469 | aliguori | size -= l; |
571 | a672b469 | aliguori | if (f->buf_index >= IO_BUF_SIZE)
|
572 | a672b469 | aliguori | qemu_fflush(f); |
573 | a672b469 | aliguori | } |
574 | a672b469 | aliguori | } |
575 | a672b469 | aliguori | |
576 | a672b469 | aliguori | void qemu_put_byte(QEMUFile *f, int v) |
577 | a672b469 | aliguori | { |
578 | 3961b4dd | Juan Quintela | if (!f->last_error && f->is_write == 0 && f->buf_index > 0) { |
579 | a672b469 | aliguori | fprintf(stderr, |
580 | a672b469 | aliguori | "Attempted to write to buffer while read buffer is not empty\n");
|
581 | a672b469 | aliguori | abort(); |
582 | a672b469 | aliguori | } |
583 | a672b469 | aliguori | |
584 | a672b469 | aliguori | f->buf[f->buf_index++] = v; |
585 | a672b469 | aliguori | f->is_write = 1;
|
586 | a672b469 | aliguori | if (f->buf_index >= IO_BUF_SIZE)
|
587 | a672b469 | aliguori | qemu_fflush(f); |
588 | a672b469 | aliguori | } |
589 | a672b469 | aliguori | |
590 | c6380724 | Juan Quintela | static void qemu_file_skip(QEMUFile *f, int size) |
591 | a672b469 | aliguori | { |
592 | c6380724 | Juan Quintela | if (f->buf_index + size <= f->buf_size) {
|
593 | c6380724 | Juan Quintela | f->buf_index += size; |
594 | c6380724 | Juan Quintela | } |
595 | c6380724 | Juan Quintela | } |
596 | c6380724 | Juan Quintela | |
597 | c6380724 | Juan Quintela | static int qemu_peek_buffer(QEMUFile *f, uint8_t *buf, int size, size_t offset) |
598 | a672b469 | aliguori | { |
599 | c6380724 | Juan Quintela | int pending;
|
600 | c6380724 | Juan Quintela | int index;
|
601 | a672b469 | aliguori | |
602 | b9ce1454 | Juan Quintela | if (f->is_write) {
|
603 | a672b469 | aliguori | abort(); |
604 | b9ce1454 | Juan Quintela | } |
605 | a672b469 | aliguori | |
606 | c6380724 | Juan Quintela | index = f->buf_index + offset; |
607 | c6380724 | Juan Quintela | pending = f->buf_size - index; |
608 | c6380724 | Juan Quintela | if (pending < size) {
|
609 | c6380724 | Juan Quintela | qemu_fill_buffer(f); |
610 | c6380724 | Juan Quintela | index = f->buf_index + offset; |
611 | c6380724 | Juan Quintela | pending = f->buf_size - index; |
612 | c6380724 | Juan Quintela | } |
613 | c6380724 | Juan Quintela | |
614 | c6380724 | Juan Quintela | if (pending <= 0) { |
615 | c6380724 | Juan Quintela | return 0; |
616 | c6380724 | Juan Quintela | } |
617 | c6380724 | Juan Quintela | if (size > pending) {
|
618 | c6380724 | Juan Quintela | size = pending; |
619 | c6380724 | Juan Quintela | } |
620 | c6380724 | Juan Quintela | |
621 | c6380724 | Juan Quintela | memcpy(buf, f->buf + index, size); |
622 | c6380724 | Juan Quintela | return size;
|
623 | c6380724 | Juan Quintela | } |
624 | c6380724 | Juan Quintela | |
625 | c6380724 | Juan Quintela | int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size) |
626 | c6380724 | Juan Quintela | { |
627 | c6380724 | Juan Quintela | int pending = size;
|
628 | c6380724 | Juan Quintela | int done = 0; |
629 | c6380724 | Juan Quintela | |
630 | c6380724 | Juan Quintela | while (pending > 0) { |
631 | c6380724 | Juan Quintela | int res;
|
632 | c6380724 | Juan Quintela | |
633 | c6380724 | Juan Quintela | res = qemu_peek_buffer(f, buf, pending, 0);
|
634 | c6380724 | Juan Quintela | if (res == 0) { |
635 | c6380724 | Juan Quintela | return done;
|
636 | a672b469 | aliguori | } |
637 | c6380724 | Juan Quintela | qemu_file_skip(f, res); |
638 | c6380724 | Juan Quintela | buf += res; |
639 | c6380724 | Juan Quintela | pending -= res; |
640 | c6380724 | Juan Quintela | done += res; |
641 | a672b469 | aliguori | } |
642 | c6380724 | Juan Quintela | return done;
|
643 | a672b469 | aliguori | } |
644 | a672b469 | aliguori | |
645 | c6380724 | Juan Quintela | static int qemu_peek_byte(QEMUFile *f, int offset) |
646 | 811814bd | Juan Quintela | { |
647 | c6380724 | Juan Quintela | int index = f->buf_index + offset;
|
648 | c6380724 | Juan Quintela | |
649 | b9ce1454 | Juan Quintela | if (f->is_write) {
|
650 | 811814bd | Juan Quintela | abort(); |
651 | b9ce1454 | Juan Quintela | } |
652 | 811814bd | Juan Quintela | |
653 | c6380724 | Juan Quintela | if (index >= f->buf_size) {
|
654 | 811814bd | Juan Quintela | qemu_fill_buffer(f); |
655 | c6380724 | Juan Quintela | index = f->buf_index + offset; |
656 | c6380724 | Juan Quintela | if (index >= f->buf_size) {
|
657 | 811814bd | Juan Quintela | return 0; |
658 | b9ce1454 | Juan Quintela | } |
659 | 811814bd | Juan Quintela | } |
660 | c6380724 | Juan Quintela | return f->buf[index];
|
661 | 811814bd | Juan Quintela | } |
662 | 811814bd | Juan Quintela | |
663 | a672b469 | aliguori | int qemu_get_byte(QEMUFile *f)
|
664 | a672b469 | aliguori | { |
665 | 65f3bb3d | Juan Quintela | int result;
|
666 | a672b469 | aliguori | |
667 | c6380724 | Juan Quintela | result = qemu_peek_byte(f, 0);
|
668 | c6380724 | Juan Quintela | qemu_file_skip(f, 1);
|
669 | 65f3bb3d | Juan Quintela | return result;
|
670 | a672b469 | aliguori | } |
671 | a672b469 | aliguori | |
672 | a672b469 | aliguori | int64_t qemu_ftell(QEMUFile *f) |
673 | a672b469 | aliguori | { |
674 | a672b469 | aliguori | return f->buf_offset - f->buf_size + f->buf_index;
|
675 | a672b469 | aliguori | } |
676 | a672b469 | aliguori | |
677 | a672b469 | aliguori | int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence)
|
678 | a672b469 | aliguori | { |
679 | a672b469 | aliguori | if (whence == SEEK_SET) {
|
680 | a672b469 | aliguori | /* nothing to do */
|
681 | a672b469 | aliguori | } else if (whence == SEEK_CUR) { |
682 | a672b469 | aliguori | pos += qemu_ftell(f); |
683 | a672b469 | aliguori | } else {
|
684 | a672b469 | aliguori | /* SEEK_END not supported */
|
685 | a672b469 | aliguori | return -1; |
686 | a672b469 | aliguori | } |
687 | a672b469 | aliguori | if (f->put_buffer) {
|
688 | a672b469 | aliguori | qemu_fflush(f); |
689 | a672b469 | aliguori | f->buf_offset = pos; |
690 | a672b469 | aliguori | } else {
|
691 | a672b469 | aliguori | f->buf_offset = pos; |
692 | a672b469 | aliguori | f->buf_index = 0;
|
693 | a672b469 | aliguori | f->buf_size = 0;
|
694 | a672b469 | aliguori | } |
695 | a672b469 | aliguori | return pos;
|
696 | a672b469 | aliguori | } |
697 | a672b469 | aliguori | |
698 | a672b469 | aliguori | int qemu_file_rate_limit(QEMUFile *f)
|
699 | a672b469 | aliguori | { |
700 | a672b469 | aliguori | if (f->rate_limit)
|
701 | a672b469 | aliguori | return f->rate_limit(f->opaque);
|
702 | a672b469 | aliguori | |
703 | a672b469 | aliguori | return 0; |
704 | a672b469 | aliguori | } |
705 | a672b469 | aliguori | |
706 | 3d002df3 | Michael S. Tsirkin | int64_t qemu_file_get_rate_limit(QEMUFile *f) |
707 | c163b5ca | lirans@il.ibm.com | { |
708 | c163b5ca | lirans@il.ibm.com | if (f->get_rate_limit)
|
709 | c163b5ca | lirans@il.ibm.com | return f->get_rate_limit(f->opaque);
|
710 | c163b5ca | lirans@il.ibm.com | |
711 | c163b5ca | lirans@il.ibm.com | return 0; |
712 | c163b5ca | lirans@il.ibm.com | } |
713 | c163b5ca | lirans@il.ibm.com | |
714 | 3d002df3 | Michael S. Tsirkin | int64_t qemu_file_set_rate_limit(QEMUFile *f, int64_t new_rate) |
715 | 19629537 | Glauber Costa | { |
716 | 0bb05eaf | Glauber Costa | /* any failed or completed migration keeps its state to allow probing of
|
717 | 0bb05eaf | Glauber Costa | * migration data, but has no associated file anymore */
|
718 | 0bb05eaf | Glauber Costa | if (f && f->set_rate_limit)
|
719 | 19629537 | Glauber Costa | return f->set_rate_limit(f->opaque, new_rate);
|
720 | 19629537 | Glauber Costa | |
721 | 19629537 | Glauber Costa | return 0; |
722 | 19629537 | Glauber Costa | } |
723 | 19629537 | Glauber Costa | |
724 | a672b469 | aliguori | void qemu_put_be16(QEMUFile *f, unsigned int v) |
725 | a672b469 | aliguori | { |
726 | a672b469 | aliguori | qemu_put_byte(f, v >> 8);
|
727 | a672b469 | aliguori | qemu_put_byte(f, v); |
728 | a672b469 | aliguori | } |
729 | a672b469 | aliguori | |
730 | a672b469 | aliguori | void qemu_put_be32(QEMUFile *f, unsigned int v) |
731 | a672b469 | aliguori | { |
732 | a672b469 | aliguori | qemu_put_byte(f, v >> 24);
|
733 | a672b469 | aliguori | qemu_put_byte(f, v >> 16);
|
734 | a672b469 | aliguori | qemu_put_byte(f, v >> 8);
|
735 | a672b469 | aliguori | qemu_put_byte(f, v); |
736 | a672b469 | aliguori | } |
737 | a672b469 | aliguori | |
738 | a672b469 | aliguori | void qemu_put_be64(QEMUFile *f, uint64_t v)
|
739 | a672b469 | aliguori | { |
740 | a672b469 | aliguori | qemu_put_be32(f, v >> 32);
|
741 | a672b469 | aliguori | qemu_put_be32(f, v); |
742 | a672b469 | aliguori | } |
743 | a672b469 | aliguori | |
744 | a672b469 | aliguori | unsigned int qemu_get_be16(QEMUFile *f) |
745 | a672b469 | aliguori | { |
746 | a672b469 | aliguori | unsigned int v; |
747 | a672b469 | aliguori | v = qemu_get_byte(f) << 8;
|
748 | a672b469 | aliguori | v |= qemu_get_byte(f); |
749 | a672b469 | aliguori | return v;
|
750 | a672b469 | aliguori | } |
751 | a672b469 | aliguori | |
752 | a672b469 | aliguori | unsigned int qemu_get_be32(QEMUFile *f) |
753 | a672b469 | aliguori | { |
754 | a672b469 | aliguori | unsigned int v; |
755 | a672b469 | aliguori | v = qemu_get_byte(f) << 24;
|
756 | a672b469 | aliguori | v |= qemu_get_byte(f) << 16;
|
757 | a672b469 | aliguori | v |= qemu_get_byte(f) << 8;
|
758 | a672b469 | aliguori | v |= qemu_get_byte(f); |
759 | a672b469 | aliguori | return v;
|
760 | a672b469 | aliguori | } |
761 | a672b469 | aliguori | |
762 | a672b469 | aliguori | uint64_t qemu_get_be64(QEMUFile *f) |
763 | a672b469 | aliguori | { |
764 | a672b469 | aliguori | uint64_t v; |
765 | a672b469 | aliguori | v = (uint64_t)qemu_get_be32(f) << 32;
|
766 | a672b469 | aliguori | v |= qemu_get_be32(f); |
767 | a672b469 | aliguori | return v;
|
768 | a672b469 | aliguori | } |
769 | a672b469 | aliguori | |
770 | 2ff68d07 | Paolo Bonzini | |
771 | 2ff68d07 | Paolo Bonzini | /* timer */
|
772 | 2ff68d07 | Paolo Bonzini | |
773 | 2ff68d07 | Paolo Bonzini | void qemu_put_timer(QEMUFile *f, QEMUTimer *ts)
|
774 | 2ff68d07 | Paolo Bonzini | { |
775 | 2ff68d07 | Paolo Bonzini | uint64_t expire_time; |
776 | 2ff68d07 | Paolo Bonzini | |
777 | 2ff68d07 | Paolo Bonzini | expire_time = qemu_timer_expire_time_ns(ts); |
778 | 2ff68d07 | Paolo Bonzini | qemu_put_be64(f, expire_time); |
779 | 2ff68d07 | Paolo Bonzini | } |
780 | 2ff68d07 | Paolo Bonzini | |
781 | 2ff68d07 | Paolo Bonzini | void qemu_get_timer(QEMUFile *f, QEMUTimer *ts)
|
782 | 2ff68d07 | Paolo Bonzini | { |
783 | 2ff68d07 | Paolo Bonzini | uint64_t expire_time; |
784 | 2ff68d07 | Paolo Bonzini | |
785 | 2ff68d07 | Paolo Bonzini | expire_time = qemu_get_be64(f); |
786 | 2ff68d07 | Paolo Bonzini | if (expire_time != -1) { |
787 | 2ff68d07 | Paolo Bonzini | qemu_mod_timer_ns(ts, expire_time); |
788 | 2ff68d07 | Paolo Bonzini | } else {
|
789 | 2ff68d07 | Paolo Bonzini | qemu_del_timer(ts); |
790 | 2ff68d07 | Paolo Bonzini | } |
791 | 2ff68d07 | Paolo Bonzini | } |
792 | 2ff68d07 | Paolo Bonzini | |
793 | 2ff68d07 | Paolo Bonzini | |
794 | cdae5cfb | Gerd Hoffmann | /* bool */
|
795 | cdae5cfb | Gerd Hoffmann | |
796 | cdae5cfb | Gerd Hoffmann | static int get_bool(QEMUFile *f, void *pv, size_t size) |
797 | cdae5cfb | Gerd Hoffmann | { |
798 | cdae5cfb | Gerd Hoffmann | bool *v = pv;
|
799 | cdae5cfb | Gerd Hoffmann | *v = qemu_get_byte(f); |
800 | cdae5cfb | Gerd Hoffmann | return 0; |
801 | cdae5cfb | Gerd Hoffmann | } |
802 | cdae5cfb | Gerd Hoffmann | |
803 | cdae5cfb | Gerd Hoffmann | static void put_bool(QEMUFile *f, void *pv, size_t size) |
804 | cdae5cfb | Gerd Hoffmann | { |
805 | cdae5cfb | Gerd Hoffmann | bool *v = pv;
|
806 | cdae5cfb | Gerd Hoffmann | qemu_put_byte(f, *v); |
807 | cdae5cfb | Gerd Hoffmann | } |
808 | cdae5cfb | Gerd Hoffmann | |
809 | cdae5cfb | Gerd Hoffmann | const VMStateInfo vmstate_info_bool = {
|
810 | cdae5cfb | Gerd Hoffmann | .name = "bool",
|
811 | cdae5cfb | Gerd Hoffmann | .get = get_bool, |
812 | cdae5cfb | Gerd Hoffmann | .put = put_bool, |
813 | cdae5cfb | Gerd Hoffmann | }; |
814 | cdae5cfb | Gerd Hoffmann | |
815 | 9ed7d6ae | Juan Quintela | /* 8 bit int */
|
816 | 9ed7d6ae | Juan Quintela | |
817 | 9ed7d6ae | Juan Quintela | static int get_int8(QEMUFile *f, void *pv, size_t size) |
818 | 9ed7d6ae | Juan Quintela | { |
819 | 9ed7d6ae | Juan Quintela | int8_t *v = pv; |
820 | 9ed7d6ae | Juan Quintela | qemu_get_s8s(f, v); |
821 | 9ed7d6ae | Juan Quintela | return 0; |
822 | 9ed7d6ae | Juan Quintela | } |
823 | 9ed7d6ae | Juan Quintela | |
824 | 84e2e3eb | Juan Quintela | static void put_int8(QEMUFile *f, void *pv, size_t size) |
825 | 9ed7d6ae | Juan Quintela | { |
826 | 84e2e3eb | Juan Quintela | int8_t *v = pv; |
827 | 9ed7d6ae | Juan Quintela | qemu_put_s8s(f, v); |
828 | 9ed7d6ae | Juan Quintela | } |
829 | 9ed7d6ae | Juan Quintela | |
830 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int8 = {
|
831 | 9ed7d6ae | Juan Quintela | .name = "int8",
|
832 | 9ed7d6ae | Juan Quintela | .get = get_int8, |
833 | 9ed7d6ae | Juan Quintela | .put = put_int8, |
834 | 9ed7d6ae | Juan Quintela | }; |
835 | 9ed7d6ae | Juan Quintela | |
836 | 9ed7d6ae | Juan Quintela | /* 16 bit int */
|
837 | 9ed7d6ae | Juan Quintela | |
838 | 9ed7d6ae | Juan Quintela | static int get_int16(QEMUFile *f, void *pv, size_t size) |
839 | 9ed7d6ae | Juan Quintela | { |
840 | 9ed7d6ae | Juan Quintela | int16_t *v = pv; |
841 | 9ed7d6ae | Juan Quintela | qemu_get_sbe16s(f, v); |
842 | 9ed7d6ae | Juan Quintela | return 0; |
843 | 9ed7d6ae | Juan Quintela | } |
844 | 9ed7d6ae | Juan Quintela | |
845 | 84e2e3eb | Juan Quintela | static void put_int16(QEMUFile *f, void *pv, size_t size) |
846 | 9ed7d6ae | Juan Quintela | { |
847 | 84e2e3eb | Juan Quintela | int16_t *v = pv; |
848 | 9ed7d6ae | Juan Quintela | qemu_put_sbe16s(f, v); |
849 | 9ed7d6ae | Juan Quintela | } |
850 | 9ed7d6ae | Juan Quintela | |
851 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int16 = {
|
852 | 9ed7d6ae | Juan Quintela | .name = "int16",
|
853 | 9ed7d6ae | Juan Quintela | .get = get_int16, |
854 | 9ed7d6ae | Juan Quintela | .put = put_int16, |
855 | 9ed7d6ae | Juan Quintela | }; |
856 | 9ed7d6ae | Juan Quintela | |
857 | 9ed7d6ae | Juan Quintela | /* 32 bit int */
|
858 | 9ed7d6ae | Juan Quintela | |
859 | 9ed7d6ae | Juan Quintela | static int get_int32(QEMUFile *f, void *pv, size_t size) |
860 | 9ed7d6ae | Juan Quintela | { |
861 | 9ed7d6ae | Juan Quintela | int32_t *v = pv; |
862 | 9ed7d6ae | Juan Quintela | qemu_get_sbe32s(f, v); |
863 | 9ed7d6ae | Juan Quintela | return 0; |
864 | 9ed7d6ae | Juan Quintela | } |
865 | 9ed7d6ae | Juan Quintela | |
866 | 84e2e3eb | Juan Quintela | static void put_int32(QEMUFile *f, void *pv, size_t size) |
867 | 9ed7d6ae | Juan Quintela | { |
868 | 84e2e3eb | Juan Quintela | int32_t *v = pv; |
869 | 9ed7d6ae | Juan Quintela | qemu_put_sbe32s(f, v); |
870 | 9ed7d6ae | Juan Quintela | } |
871 | 9ed7d6ae | Juan Quintela | |
872 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int32 = {
|
873 | 9ed7d6ae | Juan Quintela | .name = "int32",
|
874 | 9ed7d6ae | Juan Quintela | .get = get_int32, |
875 | 9ed7d6ae | Juan Quintela | .put = put_int32, |
876 | 9ed7d6ae | Juan Quintela | }; |
877 | 9ed7d6ae | Juan Quintela | |
878 | 82501660 | Juan Quintela | /* 32 bit int. See that the received value is the same than the one
|
879 | 82501660 | Juan Quintela | in the field */
|
880 | 82501660 | Juan Quintela | |
881 | 82501660 | Juan Quintela | static int get_int32_equal(QEMUFile *f, void *pv, size_t size) |
882 | 82501660 | Juan Quintela | { |
883 | 82501660 | Juan Quintela | int32_t *v = pv; |
884 | 82501660 | Juan Quintela | int32_t v2; |
885 | 82501660 | Juan Quintela | qemu_get_sbe32s(f, &v2); |
886 | 82501660 | Juan Quintela | |
887 | 82501660 | Juan Quintela | if (*v == v2)
|
888 | 82501660 | Juan Quintela | return 0; |
889 | 82501660 | Juan Quintela | return -EINVAL;
|
890 | 82501660 | Juan Quintela | } |
891 | 82501660 | Juan Quintela | |
892 | 82501660 | Juan Quintela | const VMStateInfo vmstate_info_int32_equal = {
|
893 | 82501660 | Juan Quintela | .name = "int32 equal",
|
894 | 82501660 | Juan Quintela | .get = get_int32_equal, |
895 | 82501660 | Juan Quintela | .put = put_int32, |
896 | 82501660 | Juan Quintela | }; |
897 | 82501660 | Juan Quintela | |
898 | 0a031e0a | Juan Quintela | /* 32 bit int. See that the received value is the less or the same
|
899 | 0a031e0a | Juan Quintela | than the one in the field */
|
900 | 0a031e0a | Juan Quintela | |
901 | 0a031e0a | Juan Quintela | static int get_int32_le(QEMUFile *f, void *pv, size_t size) |
902 | 0a031e0a | Juan Quintela | { |
903 | 0a031e0a | Juan Quintela | int32_t *old = pv; |
904 | 0a031e0a | Juan Quintela | int32_t new; |
905 | 0a031e0a | Juan Quintela | qemu_get_sbe32s(f, &new); |
906 | 0a031e0a | Juan Quintela | |
907 | 0a031e0a | Juan Quintela | if (*old <= new)
|
908 | 0a031e0a | Juan Quintela | return 0; |
909 | 0a031e0a | Juan Quintela | return -EINVAL;
|
910 | 0a031e0a | Juan Quintela | } |
911 | 0a031e0a | Juan Quintela | |
912 | 0a031e0a | Juan Quintela | const VMStateInfo vmstate_info_int32_le = {
|
913 | 0a031e0a | Juan Quintela | .name = "int32 equal",
|
914 | 0a031e0a | Juan Quintela | .get = get_int32_le, |
915 | 0a031e0a | Juan Quintela | .put = put_int32, |
916 | 0a031e0a | Juan Quintela | }; |
917 | 0a031e0a | Juan Quintela | |
918 | 9ed7d6ae | Juan Quintela | /* 64 bit int */
|
919 | 9ed7d6ae | Juan Quintela | |
920 | 9ed7d6ae | Juan Quintela | static int get_int64(QEMUFile *f, void *pv, size_t size) |
921 | 9ed7d6ae | Juan Quintela | { |
922 | 9ed7d6ae | Juan Quintela | int64_t *v = pv; |
923 | 9ed7d6ae | Juan Quintela | qemu_get_sbe64s(f, v); |
924 | 9ed7d6ae | Juan Quintela | return 0; |
925 | 9ed7d6ae | Juan Quintela | } |
926 | 9ed7d6ae | Juan Quintela | |
927 | 84e2e3eb | Juan Quintela | static void put_int64(QEMUFile *f, void *pv, size_t size) |
928 | 9ed7d6ae | Juan Quintela | { |
929 | 84e2e3eb | Juan Quintela | int64_t *v = pv; |
930 | 9ed7d6ae | Juan Quintela | qemu_put_sbe64s(f, v); |
931 | 9ed7d6ae | Juan Quintela | } |
932 | 9ed7d6ae | Juan Quintela | |
933 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int64 = {
|
934 | 9ed7d6ae | Juan Quintela | .name = "int64",
|
935 | 9ed7d6ae | Juan Quintela | .get = get_int64, |
936 | 9ed7d6ae | Juan Quintela | .put = put_int64, |
937 | 9ed7d6ae | Juan Quintela | }; |
938 | 9ed7d6ae | Juan Quintela | |
939 | 9ed7d6ae | Juan Quintela | /* 8 bit unsigned int */
|
940 | 9ed7d6ae | Juan Quintela | |
941 | 9ed7d6ae | Juan Quintela | static int get_uint8(QEMUFile *f, void *pv, size_t size) |
942 | 9ed7d6ae | Juan Quintela | { |
943 | 9ed7d6ae | Juan Quintela | uint8_t *v = pv; |
944 | 9ed7d6ae | Juan Quintela | qemu_get_8s(f, v); |
945 | 9ed7d6ae | Juan Quintela | return 0; |
946 | 9ed7d6ae | Juan Quintela | } |
947 | 9ed7d6ae | Juan Quintela | |
948 | 84e2e3eb | Juan Quintela | static void put_uint8(QEMUFile *f, void *pv, size_t size) |
949 | 9ed7d6ae | Juan Quintela | { |
950 | 84e2e3eb | Juan Quintela | uint8_t *v = pv; |
951 | 9ed7d6ae | Juan Quintela | qemu_put_8s(f, v); |
952 | 9ed7d6ae | Juan Quintela | } |
953 | 9ed7d6ae | Juan Quintela | |
954 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint8 = {
|
955 | 9ed7d6ae | Juan Quintela | .name = "uint8",
|
956 | 9ed7d6ae | Juan Quintela | .get = get_uint8, |
957 | 9ed7d6ae | Juan Quintela | .put = put_uint8, |
958 | 9ed7d6ae | Juan Quintela | }; |
959 | 9ed7d6ae | Juan Quintela | |
960 | 9ed7d6ae | Juan Quintela | /* 16 bit unsigned int */
|
961 | 9ed7d6ae | Juan Quintela | |
962 | 9ed7d6ae | Juan Quintela | static int get_uint16(QEMUFile *f, void *pv, size_t size) |
963 | 9ed7d6ae | Juan Quintela | { |
964 | 9ed7d6ae | Juan Quintela | uint16_t *v = pv; |
965 | 9ed7d6ae | Juan Quintela | qemu_get_be16s(f, v); |
966 | 9ed7d6ae | Juan Quintela | return 0; |
967 | 9ed7d6ae | Juan Quintela | } |
968 | 9ed7d6ae | Juan Quintela | |
969 | 84e2e3eb | Juan Quintela | static void put_uint16(QEMUFile *f, void *pv, size_t size) |
970 | 9ed7d6ae | Juan Quintela | { |
971 | 84e2e3eb | Juan Quintela | uint16_t *v = pv; |
972 | 9ed7d6ae | Juan Quintela | qemu_put_be16s(f, v); |
973 | 9ed7d6ae | Juan Quintela | } |
974 | 9ed7d6ae | Juan Quintela | |
975 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint16 = {
|
976 | 9ed7d6ae | Juan Quintela | .name = "uint16",
|
977 | 9ed7d6ae | Juan Quintela | .get = get_uint16, |
978 | 9ed7d6ae | Juan Quintela | .put = put_uint16, |
979 | 9ed7d6ae | Juan Quintela | }; |
980 | 9ed7d6ae | Juan Quintela | |
981 | 9ed7d6ae | Juan Quintela | /* 32 bit unsigned int */
|
982 | 9ed7d6ae | Juan Quintela | |
983 | 9ed7d6ae | Juan Quintela | static int get_uint32(QEMUFile *f, void *pv, size_t size) |
984 | 9ed7d6ae | Juan Quintela | { |
985 | 9ed7d6ae | Juan Quintela | uint32_t *v = pv; |
986 | 9ed7d6ae | Juan Quintela | qemu_get_be32s(f, v); |
987 | 9ed7d6ae | Juan Quintela | return 0; |
988 | 9ed7d6ae | Juan Quintela | } |
989 | 9ed7d6ae | Juan Quintela | |
990 | 84e2e3eb | Juan Quintela | static void put_uint32(QEMUFile *f, void *pv, size_t size) |
991 | 9ed7d6ae | Juan Quintela | { |
992 | 84e2e3eb | Juan Quintela | uint32_t *v = pv; |
993 | 9ed7d6ae | Juan Quintela | qemu_put_be32s(f, v); |
994 | 9ed7d6ae | Juan Quintela | } |
995 | 9ed7d6ae | Juan Quintela | |
996 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint32 = {
|
997 | 9ed7d6ae | Juan Quintela | .name = "uint32",
|
998 | 9ed7d6ae | Juan Quintela | .get = get_uint32, |
999 | 9ed7d6ae | Juan Quintela | .put = put_uint32, |
1000 | 9ed7d6ae | Juan Quintela | }; |
1001 | 9ed7d6ae | Juan Quintela | |
1002 | 9122a8fe | Juan Quintela | /* 32 bit uint. See that the received value is the same than the one
|
1003 | 9122a8fe | Juan Quintela | in the field */
|
1004 | 9122a8fe | Juan Quintela | |
1005 | 9122a8fe | Juan Quintela | static int get_uint32_equal(QEMUFile *f, void *pv, size_t size) |
1006 | 9122a8fe | Juan Quintela | { |
1007 | 9122a8fe | Juan Quintela | uint32_t *v = pv; |
1008 | 9122a8fe | Juan Quintela | uint32_t v2; |
1009 | 9122a8fe | Juan Quintela | qemu_get_be32s(f, &v2); |
1010 | 9122a8fe | Juan Quintela | |
1011 | 9122a8fe | Juan Quintela | if (*v == v2) {
|
1012 | 9122a8fe | Juan Quintela | return 0; |
1013 | 9122a8fe | Juan Quintela | } |
1014 | 9122a8fe | Juan Quintela | return -EINVAL;
|
1015 | 9122a8fe | Juan Quintela | } |
1016 | 9122a8fe | Juan Quintela | |
1017 | 9122a8fe | Juan Quintela | const VMStateInfo vmstate_info_uint32_equal = {
|
1018 | 9122a8fe | Juan Quintela | .name = "uint32 equal",
|
1019 | 9122a8fe | Juan Quintela | .get = get_uint32_equal, |
1020 | 9122a8fe | Juan Quintela | .put = put_uint32, |
1021 | 9122a8fe | Juan Quintela | }; |
1022 | 9122a8fe | Juan Quintela | |
1023 | 9ed7d6ae | Juan Quintela | /* 64 bit unsigned int */
|
1024 | 9ed7d6ae | Juan Quintela | |
1025 | 9ed7d6ae | Juan Quintela | static int get_uint64(QEMUFile *f, void *pv, size_t size) |
1026 | 9ed7d6ae | Juan Quintela | { |
1027 | 9ed7d6ae | Juan Quintela | uint64_t *v = pv; |
1028 | 9ed7d6ae | Juan Quintela | qemu_get_be64s(f, v); |
1029 | 9ed7d6ae | Juan Quintela | return 0; |
1030 | 9ed7d6ae | Juan Quintela | } |
1031 | 9ed7d6ae | Juan Quintela | |
1032 | 84e2e3eb | Juan Quintela | static void put_uint64(QEMUFile *f, void *pv, size_t size) |
1033 | 9ed7d6ae | Juan Quintela | { |
1034 | 84e2e3eb | Juan Quintela | uint64_t *v = pv; |
1035 | 9ed7d6ae | Juan Quintela | qemu_put_be64s(f, v); |
1036 | 9ed7d6ae | Juan Quintela | } |
1037 | 9ed7d6ae | Juan Quintela | |
1038 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint64 = {
|
1039 | 9ed7d6ae | Juan Quintela | .name = "uint64",
|
1040 | 9ed7d6ae | Juan Quintela | .get = get_uint64, |
1041 | 9ed7d6ae | Juan Quintela | .put = put_uint64, |
1042 | 9ed7d6ae | Juan Quintela | }; |
1043 | 9ed7d6ae | Juan Quintela | |
1044 | 80cd83e7 | Juan Quintela | /* 8 bit int. See that the received value is the same than the one
|
1045 | 80cd83e7 | Juan Quintela | in the field */
|
1046 | 80cd83e7 | Juan Quintela | |
1047 | 80cd83e7 | Juan Quintela | static int get_uint8_equal(QEMUFile *f, void *pv, size_t size) |
1048 | 80cd83e7 | Juan Quintela | { |
1049 | 80cd83e7 | Juan Quintela | uint8_t *v = pv; |
1050 | 80cd83e7 | Juan Quintela | uint8_t v2; |
1051 | 80cd83e7 | Juan Quintela | qemu_get_8s(f, &v2); |
1052 | 80cd83e7 | Juan Quintela | |
1053 | 80cd83e7 | Juan Quintela | if (*v == v2)
|
1054 | 80cd83e7 | Juan Quintela | return 0; |
1055 | 80cd83e7 | Juan Quintela | return -EINVAL;
|
1056 | 80cd83e7 | Juan Quintela | } |
1057 | 80cd83e7 | Juan Quintela | |
1058 | 80cd83e7 | Juan Quintela | const VMStateInfo vmstate_info_uint8_equal = {
|
1059 | aa1cce69 | Juan Quintela | .name = "uint8 equal",
|
1060 | 80cd83e7 | Juan Quintela | .get = get_uint8_equal, |
1061 | 80cd83e7 | Juan Quintela | .put = put_uint8, |
1062 | 80cd83e7 | Juan Quintela | }; |
1063 | 80cd83e7 | Juan Quintela | |
1064 | dc3b83a0 | Juan Quintela | /* 16 bit unsigned int int. See that the received value is the same than the one
|
1065 | dc3b83a0 | Juan Quintela | in the field */
|
1066 | dc3b83a0 | Juan Quintela | |
1067 | dc3b83a0 | Juan Quintela | static int get_uint16_equal(QEMUFile *f, void *pv, size_t size) |
1068 | dc3b83a0 | Juan Quintela | { |
1069 | dc3b83a0 | Juan Quintela | uint16_t *v = pv; |
1070 | dc3b83a0 | Juan Quintela | uint16_t v2; |
1071 | dc3b83a0 | Juan Quintela | qemu_get_be16s(f, &v2); |
1072 | dc3b83a0 | Juan Quintela | |
1073 | dc3b83a0 | Juan Quintela | if (*v == v2)
|
1074 | dc3b83a0 | Juan Quintela | return 0; |
1075 | dc3b83a0 | Juan Quintela | return -EINVAL;
|
1076 | dc3b83a0 | Juan Quintela | } |
1077 | dc3b83a0 | Juan Quintela | |
1078 | dc3b83a0 | Juan Quintela | const VMStateInfo vmstate_info_uint16_equal = {
|
1079 | dc3b83a0 | Juan Quintela | .name = "uint16 equal",
|
1080 | dc3b83a0 | Juan Quintela | .get = get_uint16_equal, |
1081 | dc3b83a0 | Juan Quintela | .put = put_uint16, |
1082 | dc3b83a0 | Juan Quintela | }; |
1083 | dc3b83a0 | Juan Quintela | |
1084 | dde0463b | Juan Quintela | /* timers */
|
1085 | dde0463b | Juan Quintela | |
1086 | dde0463b | Juan Quintela | static int get_timer(QEMUFile *f, void *pv, size_t size) |
1087 | dde0463b | Juan Quintela | { |
1088 | dde0463b | Juan Quintela | QEMUTimer *v = pv; |
1089 | dde0463b | Juan Quintela | qemu_get_timer(f, v); |
1090 | dde0463b | Juan Quintela | return 0; |
1091 | dde0463b | Juan Quintela | } |
1092 | dde0463b | Juan Quintela | |
1093 | 84e2e3eb | Juan Quintela | static void put_timer(QEMUFile *f, void *pv, size_t size) |
1094 | dde0463b | Juan Quintela | { |
1095 | 84e2e3eb | Juan Quintela | QEMUTimer *v = pv; |
1096 | dde0463b | Juan Quintela | qemu_put_timer(f, v); |
1097 | dde0463b | Juan Quintela | } |
1098 | dde0463b | Juan Quintela | |
1099 | dde0463b | Juan Quintela | const VMStateInfo vmstate_info_timer = {
|
1100 | dde0463b | Juan Quintela | .name = "timer",
|
1101 | dde0463b | Juan Quintela | .get = get_timer, |
1102 | dde0463b | Juan Quintela | .put = put_timer, |
1103 | dde0463b | Juan Quintela | }; |
1104 | dde0463b | Juan Quintela | |
1105 | 6f67c50f | Juan Quintela | /* uint8_t buffers */
|
1106 | 6f67c50f | Juan Quintela | |
1107 | 6f67c50f | Juan Quintela | static int get_buffer(QEMUFile *f, void *pv, size_t size) |
1108 | 6f67c50f | Juan Quintela | { |
1109 | 6f67c50f | Juan Quintela | uint8_t *v = pv; |
1110 | 6f67c50f | Juan Quintela | qemu_get_buffer(f, v, size); |
1111 | 6f67c50f | Juan Quintela | return 0; |
1112 | 6f67c50f | Juan Quintela | } |
1113 | 6f67c50f | Juan Quintela | |
1114 | 84e2e3eb | Juan Quintela | static void put_buffer(QEMUFile *f, void *pv, size_t size) |
1115 | 6f67c50f | Juan Quintela | { |
1116 | 84e2e3eb | Juan Quintela | uint8_t *v = pv; |
1117 | 6f67c50f | Juan Quintela | qemu_put_buffer(f, v, size); |
1118 | 6f67c50f | Juan Quintela | } |
1119 | 6f67c50f | Juan Quintela | |
1120 | 6f67c50f | Juan Quintela | const VMStateInfo vmstate_info_buffer = {
|
1121 | 6f67c50f | Juan Quintela | .name = "buffer",
|
1122 | 6f67c50f | Juan Quintela | .get = get_buffer, |
1123 | 6f67c50f | Juan Quintela | .put = put_buffer, |
1124 | 6f67c50f | Juan Quintela | }; |
1125 | 6f67c50f | Juan Quintela | |
1126 | 76507c75 | Juan Quintela | /* unused buffers: space that was used for some fields that are
|
1127 | 61cc8701 | Stefan Weil | not useful anymore */
|
1128 | 76507c75 | Juan Quintela | |
1129 | 76507c75 | Juan Quintela | static int get_unused_buffer(QEMUFile *f, void *pv, size_t size) |
1130 | 76507c75 | Juan Quintela | { |
1131 | 21174c34 | Jan Kiszka | uint8_t buf[1024];
|
1132 | 21174c34 | Jan Kiszka | int block_len;
|
1133 | 21174c34 | Jan Kiszka | |
1134 | 21174c34 | Jan Kiszka | while (size > 0) { |
1135 | 21174c34 | Jan Kiszka | block_len = MIN(sizeof(buf), size);
|
1136 | 21174c34 | Jan Kiszka | size -= block_len; |
1137 | 21174c34 | Jan Kiszka | qemu_get_buffer(f, buf, block_len); |
1138 | 21174c34 | Jan Kiszka | } |
1139 | 21174c34 | Jan Kiszka | return 0; |
1140 | 76507c75 | Juan Quintela | } |
1141 | 76507c75 | Juan Quintela | |
1142 | 76507c75 | Juan Quintela | static void put_unused_buffer(QEMUFile *f, void *pv, size_t size) |
1143 | 76507c75 | Juan Quintela | { |
1144 | 21174c34 | Jan Kiszka | static const uint8_t buf[1024]; |
1145 | 21174c34 | Jan Kiszka | int block_len;
|
1146 | 21174c34 | Jan Kiszka | |
1147 | 21174c34 | Jan Kiszka | while (size > 0) { |
1148 | 21174c34 | Jan Kiszka | block_len = MIN(sizeof(buf), size);
|
1149 | 21174c34 | Jan Kiszka | size -= block_len; |
1150 | 21174c34 | Jan Kiszka | qemu_put_buffer(f, buf, block_len); |
1151 | 21174c34 | Jan Kiszka | } |
1152 | 76507c75 | Juan Quintela | } |
1153 | 76507c75 | Juan Quintela | |
1154 | 76507c75 | Juan Quintela | const VMStateInfo vmstate_info_unused_buffer = {
|
1155 | 76507c75 | Juan Quintela | .name = "unused_buffer",
|
1156 | 76507c75 | Juan Quintela | .get = get_unused_buffer, |
1157 | 76507c75 | Juan Quintela | .put = put_unused_buffer, |
1158 | 76507c75 | Juan Quintela | }; |
1159 | 76507c75 | Juan Quintela | |
1160 | 7685ee6a | Alex Williamson | typedef struct CompatEntry { |
1161 | 7685ee6a | Alex Williamson | char idstr[256]; |
1162 | 7685ee6a | Alex Williamson | int instance_id;
|
1163 | 7685ee6a | Alex Williamson | } CompatEntry; |
1164 | 7685ee6a | Alex Williamson | |
1165 | a672b469 | aliguori | typedef struct SaveStateEntry { |
1166 | 72cf2d4f | Blue Swirl | QTAILQ_ENTRY(SaveStateEntry) entry; |
1167 | a672b469 | aliguori | char idstr[256]; |
1168 | a672b469 | aliguori | int instance_id;
|
1169 | 4d2ffa08 | Jan Kiszka | int alias_id;
|
1170 | a672b469 | aliguori | int version_id;
|
1171 | a672b469 | aliguori | int section_id;
|
1172 | c163b5ca | lirans@il.ibm.com | SaveSetParamsHandler *set_params; |
1173 | a672b469 | aliguori | SaveLiveStateHandler *save_live_state; |
1174 | a672b469 | aliguori | SaveStateHandler *save_state; |
1175 | a672b469 | aliguori | LoadStateHandler *load_state; |
1176 | 9ed7d6ae | Juan Quintela | const VMStateDescription *vmsd;
|
1177 | a672b469 | aliguori | void *opaque;
|
1178 | 7685ee6a | Alex Williamson | CompatEntry *compat; |
1179 | 24312968 | Cam Macdonell | int no_migrate;
|
1180 | a672b469 | aliguori | } SaveStateEntry; |
1181 | a672b469 | aliguori | |
1182 | c163b5ca | lirans@il.ibm.com | |
1183 | 72cf2d4f | Blue Swirl | static QTAILQ_HEAD(savevm_handlers, SaveStateEntry) savevm_handlers =
|
1184 | 72cf2d4f | Blue Swirl | QTAILQ_HEAD_INITIALIZER(savevm_handlers); |
1185 | 9ed7d6ae | Juan Quintela | static int global_section_id; |
1186 | a672b469 | aliguori | |
1187 | 8718e999 | Juan Quintela | static int calculate_new_instance_id(const char *idstr) |
1188 | 8718e999 | Juan Quintela | { |
1189 | 8718e999 | Juan Quintela | SaveStateEntry *se; |
1190 | 8718e999 | Juan Quintela | int instance_id = 0; |
1191 | 8718e999 | Juan Quintela | |
1192 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1193 | 8718e999 | Juan Quintela | if (strcmp(idstr, se->idstr) == 0 |
1194 | 8718e999 | Juan Quintela | && instance_id <= se->instance_id) { |
1195 | 8718e999 | Juan Quintela | instance_id = se->instance_id + 1;
|
1196 | 8718e999 | Juan Quintela | } |
1197 | 8718e999 | Juan Quintela | } |
1198 | 8718e999 | Juan Quintela | return instance_id;
|
1199 | 8718e999 | Juan Quintela | } |
1200 | 8718e999 | Juan Quintela | |
1201 | 7685ee6a | Alex Williamson | static int calculate_compat_instance_id(const char *idstr) |
1202 | 7685ee6a | Alex Williamson | { |
1203 | 7685ee6a | Alex Williamson | SaveStateEntry *se; |
1204 | 7685ee6a | Alex Williamson | int instance_id = 0; |
1205 | 7685ee6a | Alex Williamson | |
1206 | 7685ee6a | Alex Williamson | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1207 | 7685ee6a | Alex Williamson | if (!se->compat)
|
1208 | 7685ee6a | Alex Williamson | continue;
|
1209 | 7685ee6a | Alex Williamson | |
1210 | 7685ee6a | Alex Williamson | if (strcmp(idstr, se->compat->idstr) == 0 |
1211 | 7685ee6a | Alex Williamson | && instance_id <= se->compat->instance_id) { |
1212 | 7685ee6a | Alex Williamson | instance_id = se->compat->instance_id + 1;
|
1213 | 7685ee6a | Alex Williamson | } |
1214 | 7685ee6a | Alex Williamson | } |
1215 | 7685ee6a | Alex Williamson | return instance_id;
|
1216 | 7685ee6a | Alex Williamson | } |
1217 | 7685ee6a | Alex Williamson | |
1218 | a672b469 | aliguori | /* TODO: Individual devices generally have very little idea about the rest
|
1219 | a672b469 | aliguori | of the system, so instance_id should be removed/replaced.
|
1220 | a672b469 | aliguori | Meanwhile pass -1 as instance_id if you do not already have a clearly
|
1221 | a672b469 | aliguori | distinguishing id for all instances of your device class. */
|
1222 | 0be71e32 | Alex Williamson | int register_savevm_live(DeviceState *dev,
|
1223 | 0be71e32 | Alex Williamson | const char *idstr, |
1224 | a672b469 | aliguori | int instance_id,
|
1225 | a672b469 | aliguori | int version_id,
|
1226 | c163b5ca | lirans@il.ibm.com | SaveSetParamsHandler *set_params, |
1227 | a672b469 | aliguori | SaveLiveStateHandler *save_live_state, |
1228 | a672b469 | aliguori | SaveStateHandler *save_state, |
1229 | a672b469 | aliguori | LoadStateHandler *load_state, |
1230 | a672b469 | aliguori | void *opaque)
|
1231 | a672b469 | aliguori | { |
1232 | 8718e999 | Juan Quintela | SaveStateEntry *se; |
1233 | a672b469 | aliguori | |
1234 | 7267c094 | Anthony Liguori | se = g_malloc0(sizeof(SaveStateEntry));
|
1235 | a672b469 | aliguori | se->version_id = version_id; |
1236 | a672b469 | aliguori | se->section_id = global_section_id++; |
1237 | c163b5ca | lirans@il.ibm.com | se->set_params = set_params; |
1238 | a672b469 | aliguori | se->save_live_state = save_live_state; |
1239 | a672b469 | aliguori | se->save_state = save_state; |
1240 | a672b469 | aliguori | se->load_state = load_state; |
1241 | a672b469 | aliguori | se->opaque = opaque; |
1242 | 9ed7d6ae | Juan Quintela | se->vmsd = NULL;
|
1243 | 24312968 | Cam Macdonell | se->no_migrate = 0;
|
1244 | a672b469 | aliguori | |
1245 | 7685ee6a | Alex Williamson | if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) {
|
1246 | 7685ee6a | Alex Williamson | char *id = dev->parent_bus->info->get_dev_path(dev);
|
1247 | 7685ee6a | Alex Williamson | if (id) {
|
1248 | 7685ee6a | Alex Williamson | pstrcpy(se->idstr, sizeof(se->idstr), id);
|
1249 | 7685ee6a | Alex Williamson | pstrcat(se->idstr, sizeof(se->idstr), "/"); |
1250 | 7267c094 | Anthony Liguori | g_free(id); |
1251 | 7685ee6a | Alex Williamson | |
1252 | 7267c094 | Anthony Liguori | se->compat = g_malloc0(sizeof(CompatEntry));
|
1253 | 7685ee6a | Alex Williamson | pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), idstr);
|
1254 | 7685ee6a | Alex Williamson | se->compat->instance_id = instance_id == -1 ?
|
1255 | 7685ee6a | Alex Williamson | calculate_compat_instance_id(idstr) : instance_id; |
1256 | 7685ee6a | Alex Williamson | instance_id = -1;
|
1257 | 7685ee6a | Alex Williamson | } |
1258 | 7685ee6a | Alex Williamson | } |
1259 | 7685ee6a | Alex Williamson | pstrcat(se->idstr, sizeof(se->idstr), idstr);
|
1260 | 7685ee6a | Alex Williamson | |
1261 | 8718e999 | Juan Quintela | if (instance_id == -1) { |
1262 | 7685ee6a | Alex Williamson | se->instance_id = calculate_new_instance_id(se->idstr); |
1263 | 8718e999 | Juan Quintela | } else {
|
1264 | 8718e999 | Juan Quintela | se->instance_id = instance_id; |
1265 | a672b469 | aliguori | } |
1266 | 7685ee6a | Alex Williamson | assert(!se->compat || se->instance_id == 0);
|
1267 | 8718e999 | Juan Quintela | /* add at the end of list */
|
1268 | 72cf2d4f | Blue Swirl | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
1269 | a672b469 | aliguori | return 0; |
1270 | a672b469 | aliguori | } |
1271 | a672b469 | aliguori | |
1272 | 0be71e32 | Alex Williamson | int register_savevm(DeviceState *dev,
|
1273 | 0be71e32 | Alex Williamson | const char *idstr, |
1274 | a672b469 | aliguori | int instance_id,
|
1275 | a672b469 | aliguori | int version_id,
|
1276 | a672b469 | aliguori | SaveStateHandler *save_state, |
1277 | a672b469 | aliguori | LoadStateHandler *load_state, |
1278 | a672b469 | aliguori | void *opaque)
|
1279 | a672b469 | aliguori | { |
1280 | 0be71e32 | Alex Williamson | return register_savevm_live(dev, idstr, instance_id, version_id,
|
1281 | c163b5ca | lirans@il.ibm.com | NULL, NULL, save_state, load_state, opaque); |
1282 | a672b469 | aliguori | } |
1283 | a672b469 | aliguori | |
1284 | 0be71e32 | Alex Williamson | void unregister_savevm(DeviceState *dev, const char *idstr, void *opaque) |
1285 | 41bd13af | aliguori | { |
1286 | 8718e999 | Juan Quintela | SaveStateEntry *se, *new_se; |
1287 | 7685ee6a | Alex Williamson | char id[256] = ""; |
1288 | 7685ee6a | Alex Williamson | |
1289 | 7685ee6a | Alex Williamson | if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) {
|
1290 | 7685ee6a | Alex Williamson | char *path = dev->parent_bus->info->get_dev_path(dev);
|
1291 | 7685ee6a | Alex Williamson | if (path) {
|
1292 | 7685ee6a | Alex Williamson | pstrcpy(id, sizeof(id), path);
|
1293 | 7685ee6a | Alex Williamson | pstrcat(id, sizeof(id), "/"); |
1294 | 7267c094 | Anthony Liguori | g_free(path); |
1295 | 7685ee6a | Alex Williamson | } |
1296 | 7685ee6a | Alex Williamson | } |
1297 | 7685ee6a | Alex Williamson | pstrcat(id, sizeof(id), idstr);
|
1298 | 41bd13af | aliguori | |
1299 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
1300 | 7685ee6a | Alex Williamson | if (strcmp(se->idstr, id) == 0 && se->opaque == opaque) { |
1301 | 72cf2d4f | Blue Swirl | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
1302 | 69e58af9 | Alex Williamson | if (se->compat) {
|
1303 | 7267c094 | Anthony Liguori | g_free(se->compat); |
1304 | 69e58af9 | Alex Williamson | } |
1305 | 7267c094 | Anthony Liguori | g_free(se); |
1306 | 41bd13af | aliguori | } |
1307 | 41bd13af | aliguori | } |
1308 | 41bd13af | aliguori | } |
1309 | 41bd13af | aliguori | |
1310 | 0be71e32 | Alex Williamson | int vmstate_register_with_alias_id(DeviceState *dev, int instance_id, |
1311 | 4d2ffa08 | Jan Kiszka | const VMStateDescription *vmsd,
|
1312 | 4d2ffa08 | Jan Kiszka | void *opaque, int alias_id, |
1313 | 4d2ffa08 | Jan Kiszka | int required_for_version)
|
1314 | 9ed7d6ae | Juan Quintela | { |
1315 | 8718e999 | Juan Quintela | SaveStateEntry *se; |
1316 | 9ed7d6ae | Juan Quintela | |
1317 | 4d2ffa08 | Jan Kiszka | /* If this triggers, alias support can be dropped for the vmsd. */
|
1318 | 4d2ffa08 | Jan Kiszka | assert(alias_id == -1 || required_for_version >= vmsd->minimum_version_id);
|
1319 | 4d2ffa08 | Jan Kiszka | |
1320 | 7267c094 | Anthony Liguori | se = g_malloc0(sizeof(SaveStateEntry));
|
1321 | 9ed7d6ae | Juan Quintela | se->version_id = vmsd->version_id; |
1322 | 9ed7d6ae | Juan Quintela | se->section_id = global_section_id++; |
1323 | 9ed7d6ae | Juan Quintela | se->save_live_state = NULL;
|
1324 | 9ed7d6ae | Juan Quintela | se->save_state = NULL;
|
1325 | 9ed7d6ae | Juan Quintela | se->load_state = NULL;
|
1326 | 9ed7d6ae | Juan Quintela | se->opaque = opaque; |
1327 | 9ed7d6ae | Juan Quintela | se->vmsd = vmsd; |
1328 | 4d2ffa08 | Jan Kiszka | se->alias_id = alias_id; |
1329 | 2837c8ea | Gerd Hoffmann | se->no_migrate = vmsd->unmigratable; |
1330 | 9ed7d6ae | Juan Quintela | |
1331 | 7685ee6a | Alex Williamson | if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) {
|
1332 | 7685ee6a | Alex Williamson | char *id = dev->parent_bus->info->get_dev_path(dev);
|
1333 | 7685ee6a | Alex Williamson | if (id) {
|
1334 | 7685ee6a | Alex Williamson | pstrcpy(se->idstr, sizeof(se->idstr), id);
|
1335 | 7685ee6a | Alex Williamson | pstrcat(se->idstr, sizeof(se->idstr), "/"); |
1336 | 7267c094 | Anthony Liguori | g_free(id); |
1337 | 7685ee6a | Alex Williamson | |
1338 | 7267c094 | Anthony Liguori | se->compat = g_malloc0(sizeof(CompatEntry));
|
1339 | 7685ee6a | Alex Williamson | pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), vmsd->name);
|
1340 | 7685ee6a | Alex Williamson | se->compat->instance_id = instance_id == -1 ?
|
1341 | 7685ee6a | Alex Williamson | calculate_compat_instance_id(vmsd->name) : instance_id; |
1342 | 7685ee6a | Alex Williamson | instance_id = -1;
|
1343 | 7685ee6a | Alex Williamson | } |
1344 | 7685ee6a | Alex Williamson | } |
1345 | 7685ee6a | Alex Williamson | pstrcat(se->idstr, sizeof(se->idstr), vmsd->name);
|
1346 | 7685ee6a | Alex Williamson | |
1347 | 8718e999 | Juan Quintela | if (instance_id == -1) { |
1348 | 7685ee6a | Alex Williamson | se->instance_id = calculate_new_instance_id(se->idstr); |
1349 | 8718e999 | Juan Quintela | } else {
|
1350 | 8718e999 | Juan Quintela | se->instance_id = instance_id; |
1351 | 9ed7d6ae | Juan Quintela | } |
1352 | 7685ee6a | Alex Williamson | assert(!se->compat || se->instance_id == 0);
|
1353 | 8718e999 | Juan Quintela | /* add at the end of list */
|
1354 | 72cf2d4f | Blue Swirl | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
1355 | 9ed7d6ae | Juan Quintela | return 0; |
1356 | 9ed7d6ae | Juan Quintela | } |
1357 | 9ed7d6ae | Juan Quintela | |
1358 | 0be71e32 | Alex Williamson | int vmstate_register(DeviceState *dev, int instance_id, |
1359 | 0be71e32 | Alex Williamson | const VMStateDescription *vmsd, void *opaque) |
1360 | 4d2ffa08 | Jan Kiszka | { |
1361 | 0be71e32 | Alex Williamson | return vmstate_register_with_alias_id(dev, instance_id, vmsd,
|
1362 | 0be71e32 | Alex Williamson | opaque, -1, 0); |
1363 | 4d2ffa08 | Jan Kiszka | } |
1364 | 4d2ffa08 | Jan Kiszka | |
1365 | 0be71e32 | Alex Williamson | void vmstate_unregister(DeviceState *dev, const VMStateDescription *vmsd, |
1366 | 0be71e32 | Alex Williamson | void *opaque)
|
1367 | 9ed7d6ae | Juan Quintela | { |
1368 | 1eb7538b | Juan Quintela | SaveStateEntry *se, *new_se; |
1369 | 1eb7538b | Juan Quintela | |
1370 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
1371 | 1eb7538b | Juan Quintela | if (se->vmsd == vmsd && se->opaque == opaque) {
|
1372 | 72cf2d4f | Blue Swirl | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
1373 | 69e58af9 | Alex Williamson | if (se->compat) {
|
1374 | 7267c094 | Anthony Liguori | g_free(se->compat); |
1375 | 69e58af9 | Alex Williamson | } |
1376 | 7267c094 | Anthony Liguori | g_free(se); |
1377 | 1eb7538b | Juan Quintela | } |
1378 | 1eb7538b | Juan Quintela | } |
1379 | 9ed7d6ae | Juan Quintela | } |
1380 | 9ed7d6ae | Juan Quintela | |
1381 | 811814bd | Juan Quintela | static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd, |
1382 | 811814bd | Juan Quintela | void *opaque);
|
1383 | 811814bd | Juan Quintela | static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd, |
1384 | 811814bd | Juan Quintela | void *opaque);
|
1385 | 811814bd | Juan Quintela | |
1386 | 9ed7d6ae | Juan Quintela | int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd, |
1387 | 9ed7d6ae | Juan Quintela | void *opaque, int version_id) |
1388 | 9ed7d6ae | Juan Quintela | { |
1389 | 9ed7d6ae | Juan Quintela | VMStateField *field = vmsd->fields; |
1390 | 811814bd | Juan Quintela | int ret;
|
1391 | 9ed7d6ae | Juan Quintela | |
1392 | 9ed7d6ae | Juan Quintela | if (version_id > vmsd->version_id) {
|
1393 | 9ed7d6ae | Juan Quintela | return -EINVAL;
|
1394 | 9ed7d6ae | Juan Quintela | } |
1395 | 9ed7d6ae | Juan Quintela | if (version_id < vmsd->minimum_version_id_old) {
|
1396 | 9ed7d6ae | Juan Quintela | return -EINVAL;
|
1397 | 9ed7d6ae | Juan Quintela | } |
1398 | 9ed7d6ae | Juan Quintela | if (version_id < vmsd->minimum_version_id) {
|
1399 | 9ed7d6ae | Juan Quintela | return vmsd->load_state_old(f, opaque, version_id);
|
1400 | 9ed7d6ae | Juan Quintela | } |
1401 | fd4d52de | Juan Quintela | if (vmsd->pre_load) {
|
1402 | fd4d52de | Juan Quintela | int ret = vmsd->pre_load(opaque);
|
1403 | fd4d52de | Juan Quintela | if (ret)
|
1404 | fd4d52de | Juan Quintela | return ret;
|
1405 | fd4d52de | Juan Quintela | } |
1406 | 9ed7d6ae | Juan Quintela | while(field->name) {
|
1407 | f11f6a5f | Juan Quintela | if ((field->field_exists &&
|
1408 | f11f6a5f | Juan Quintela | field->field_exists(opaque, version_id)) || |
1409 | f11f6a5f | Juan Quintela | (!field->field_exists && |
1410 | f11f6a5f | Juan Quintela | field->version_id <= version_id)) { |
1411 | f752a6aa | Juan Quintela | void *base_addr = opaque + field->offset;
|
1412 | 811814bd | Juan Quintela | int i, n_elems = 1; |
1413 | e61a1e0a | Juan Quintela | int size = field->size;
|
1414 | 9ed7d6ae | Juan Quintela | |
1415 | e61a1e0a | Juan Quintela | if (field->flags & VMS_VBUFFER) {
|
1416 | e61a1e0a | Juan Quintela | size = *(int32_t *)(opaque+field->size_offset); |
1417 | 33599e2a | Juan Quintela | if (field->flags & VMS_MULTIPLY) {
|
1418 | 33599e2a | Juan Quintela | size *= field->size; |
1419 | 33599e2a | Juan Quintela | } |
1420 | e61a1e0a | Juan Quintela | } |
1421 | f752a6aa | Juan Quintela | if (field->flags & VMS_ARRAY) {
|
1422 | f752a6aa | Juan Quintela | n_elems = field->num; |
1423 | d6698281 | Juan Quintela | } else if (field->flags & VMS_VARRAY_INT32) { |
1424 | d6698281 | Juan Quintela | n_elems = *(int32_t *)(opaque+field->num_offset); |
1425 | a624b086 | Juan Quintela | } else if (field->flags & VMS_VARRAY_UINT32) { |
1426 | a624b086 | Juan Quintela | n_elems = *(uint32_t *)(opaque+field->num_offset); |
1427 | bdb4941d | Juan Quintela | } else if (field->flags & VMS_VARRAY_UINT16) { |
1428 | bdb4941d | Juan Quintela | n_elems = *(uint16_t *)(opaque+field->num_offset); |
1429 | 82fa39b7 | Juan Quintela | } else if (field->flags & VMS_VARRAY_UINT8) { |
1430 | 82fa39b7 | Juan Quintela | n_elems = *(uint8_t *)(opaque+field->num_offset); |
1431 | f752a6aa | Juan Quintela | } |
1432 | dde0463b | Juan Quintela | if (field->flags & VMS_POINTER) {
|
1433 | e61a1e0a | Juan Quintela | base_addr = *(void **)base_addr + field->start;
|
1434 | dde0463b | Juan Quintela | } |
1435 | f752a6aa | Juan Quintela | for (i = 0; i < n_elems; i++) { |
1436 | e61a1e0a | Juan Quintela | void *addr = base_addr + size * i;
|
1437 | ec245e21 | Juan Quintela | |
1438 | 19df438b | Juan Quintela | if (field->flags & VMS_ARRAY_OF_POINTER) {
|
1439 | 19df438b | Juan Quintela | addr = *(void **)addr;
|
1440 | 19df438b | Juan Quintela | } |
1441 | ec245e21 | Juan Quintela | if (field->flags & VMS_STRUCT) {
|
1442 | fa3aad24 | Juan Quintela | ret = vmstate_load_state(f, field->vmsd, addr, field->vmsd->version_id); |
1443 | ec245e21 | Juan Quintela | } else {
|
1444 | e61a1e0a | Juan Quintela | ret = field->info->get(f, addr, size); |
1445 | ec245e21 | Juan Quintela | |
1446 | ec245e21 | Juan Quintela | } |
1447 | f752a6aa | Juan Quintela | if (ret < 0) { |
1448 | f752a6aa | Juan Quintela | return ret;
|
1449 | f752a6aa | Juan Quintela | } |
1450 | 9ed7d6ae | Juan Quintela | } |
1451 | 9ed7d6ae | Juan Quintela | } |
1452 | 9ed7d6ae | Juan Quintela | field++; |
1453 | 9ed7d6ae | Juan Quintela | } |
1454 | 811814bd | Juan Quintela | ret = vmstate_subsection_load(f, vmsd, opaque); |
1455 | 811814bd | Juan Quintela | if (ret != 0) { |
1456 | 811814bd | Juan Quintela | return ret;
|
1457 | 811814bd | Juan Quintela | } |
1458 | 752ff2fa | Juan Quintela | if (vmsd->post_load) {
|
1459 | e59fb374 | Juan Quintela | return vmsd->post_load(opaque, version_id);
|
1460 | 752ff2fa | Juan Quintela | } |
1461 | 9ed7d6ae | Juan Quintela | return 0; |
1462 | 9ed7d6ae | Juan Quintela | } |
1463 | 9ed7d6ae | Juan Quintela | |
1464 | 9ed7d6ae | Juan Quintela | void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd, |
1465 | 84e2e3eb | Juan Quintela | void *opaque)
|
1466 | 9ed7d6ae | Juan Quintela | { |
1467 | 9ed7d6ae | Juan Quintela | VMStateField *field = vmsd->fields; |
1468 | 9ed7d6ae | Juan Quintela | |
1469 | 8fb0791d | Juan Quintela | if (vmsd->pre_save) {
|
1470 | 8fb0791d | Juan Quintela | vmsd->pre_save(opaque); |
1471 | 8fb0791d | Juan Quintela | } |
1472 | 9ed7d6ae | Juan Quintela | while(field->name) {
|
1473 | f11f6a5f | Juan Quintela | if (!field->field_exists ||
|
1474 | f11f6a5f | Juan Quintela | field->field_exists(opaque, vmsd->version_id)) { |
1475 | f11f6a5f | Juan Quintela | void *base_addr = opaque + field->offset;
|
1476 | f11f6a5f | Juan Quintela | int i, n_elems = 1; |
1477 | e61a1e0a | Juan Quintela | int size = field->size;
|
1478 | dde0463b | Juan Quintela | |
1479 | e61a1e0a | Juan Quintela | if (field->flags & VMS_VBUFFER) {
|
1480 | e61a1e0a | Juan Quintela | size = *(int32_t *)(opaque+field->size_offset); |
1481 | 33599e2a | Juan Quintela | if (field->flags & VMS_MULTIPLY) {
|
1482 | 33599e2a | Juan Quintela | size *= field->size; |
1483 | 33599e2a | Juan Quintela | } |
1484 | e61a1e0a | Juan Quintela | } |
1485 | f11f6a5f | Juan Quintela | if (field->flags & VMS_ARRAY) {
|
1486 | f11f6a5f | Juan Quintela | n_elems = field->num; |
1487 | d6698281 | Juan Quintela | } else if (field->flags & VMS_VARRAY_INT32) { |
1488 | d6698281 | Juan Quintela | n_elems = *(int32_t *)(opaque+field->num_offset); |
1489 | bdb4941d | Juan Quintela | } else if (field->flags & VMS_VARRAY_UINT16) { |
1490 | bdb4941d | Juan Quintela | n_elems = *(uint16_t *)(opaque+field->num_offset); |
1491 | b784421c | Juan Quintela | } else if (field->flags & VMS_VARRAY_UINT8) { |
1492 | b784421c | Juan Quintela | n_elems = *(uint8_t *)(opaque+field->num_offset); |
1493 | f11f6a5f | Juan Quintela | } |
1494 | f11f6a5f | Juan Quintela | if (field->flags & VMS_POINTER) {
|
1495 | e61a1e0a | Juan Quintela | base_addr = *(void **)base_addr + field->start;
|
1496 | f11f6a5f | Juan Quintela | } |
1497 | f11f6a5f | Juan Quintela | for (i = 0; i < n_elems; i++) { |
1498 | e61a1e0a | Juan Quintela | void *addr = base_addr + size * i;
|
1499 | ec245e21 | Juan Quintela | |
1500 | 8595387e | Juan Quintela | if (field->flags & VMS_ARRAY_OF_POINTER) {
|
1501 | 8595387e | Juan Quintela | addr = *(void **)addr;
|
1502 | 8595387e | Juan Quintela | } |
1503 | f11f6a5f | Juan Quintela | if (field->flags & VMS_STRUCT) {
|
1504 | f11f6a5f | Juan Quintela | vmstate_save_state(f, field->vmsd, addr); |
1505 | f11f6a5f | Juan Quintela | } else {
|
1506 | e61a1e0a | Juan Quintela | field->info->put(f, addr, size); |
1507 | f11f6a5f | Juan Quintela | } |
1508 | ec245e21 | Juan Quintela | } |
1509 | dde0463b | Juan Quintela | } |
1510 | 9ed7d6ae | Juan Quintela | field++; |
1511 | 9ed7d6ae | Juan Quintela | } |
1512 | 811814bd | Juan Quintela | vmstate_subsection_save(f, vmsd, opaque); |
1513 | 9ed7d6ae | Juan Quintela | } |
1514 | 9ed7d6ae | Juan Quintela | |
1515 | 4082be4d | Juan Quintela | static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id) |
1516 | 4082be4d | Juan Quintela | { |
1517 | 9ed7d6ae | Juan Quintela | if (!se->vmsd) { /* Old style */ |
1518 | 9ed7d6ae | Juan Quintela | return se->load_state(f, se->opaque, version_id);
|
1519 | 9ed7d6ae | Juan Quintela | } |
1520 | 9ed7d6ae | Juan Quintela | return vmstate_load_state(f, se->vmsd, se->opaque, version_id);
|
1521 | 4082be4d | Juan Quintela | } |
1522 | 4082be4d | Juan Quintela | |
1523 | dc912121 | Alex Williamson | static void vmstate_save(QEMUFile *f, SaveStateEntry *se) |
1524 | 4082be4d | Juan Quintela | { |
1525 | 9ed7d6ae | Juan Quintela | if (!se->vmsd) { /* Old style */ |
1526 | 9ed7d6ae | Juan Quintela | se->save_state(f, se->opaque); |
1527 | dc912121 | Alex Williamson | return;
|
1528 | 9ed7d6ae | Juan Quintela | } |
1529 | 9ed7d6ae | Juan Quintela | vmstate_save_state(f,se->vmsd, se->opaque); |
1530 | 4082be4d | Juan Quintela | } |
1531 | 4082be4d | Juan Quintela | |
1532 | a672b469 | aliguori | #define QEMU_VM_FILE_MAGIC 0x5145564d |
1533 | a672b469 | aliguori | #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 |
1534 | a672b469 | aliguori | #define QEMU_VM_FILE_VERSION 0x00000003 |
1535 | a672b469 | aliguori | |
1536 | a672b469 | aliguori | #define QEMU_VM_EOF 0x00 |
1537 | a672b469 | aliguori | #define QEMU_VM_SECTION_START 0x01 |
1538 | a672b469 | aliguori | #define QEMU_VM_SECTION_PART 0x02 |
1539 | a672b469 | aliguori | #define QEMU_VM_SECTION_END 0x03 |
1540 | a672b469 | aliguori | #define QEMU_VM_SECTION_FULL 0x04 |
1541 | 811814bd | Juan Quintela | #define QEMU_VM_SUBSECTION 0x05 |
1542 | a672b469 | aliguori | |
1543 | dc912121 | Alex Williamson | bool qemu_savevm_state_blocked(Monitor *mon)
|
1544 | dc912121 | Alex Williamson | { |
1545 | dc912121 | Alex Williamson | SaveStateEntry *se; |
1546 | dc912121 | Alex Williamson | |
1547 | dc912121 | Alex Williamson | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1548 | dc912121 | Alex Williamson | if (se->no_migrate) {
|
1549 | dc912121 | Alex Williamson | monitor_printf(mon, "state blocked by non-migratable device '%s'\n",
|
1550 | dc912121 | Alex Williamson | se->idstr); |
1551 | dc912121 | Alex Williamson | return true; |
1552 | dc912121 | Alex Williamson | } |
1553 | dc912121 | Alex Williamson | } |
1554 | dc912121 | Alex Williamson | return false; |
1555 | dc912121 | Alex Williamson | } |
1556 | dc912121 | Alex Williamson | |
1557 | f327aa0c | Jan Kiszka | int qemu_savevm_state_begin(Monitor *mon, QEMUFile *f, int blk_enable, |
1558 | f327aa0c | Jan Kiszka | int shared)
|
1559 | a672b469 | aliguori | { |
1560 | a672b469 | aliguori | SaveStateEntry *se; |
1561 | 39346385 | Juan Quintela | int ret;
|
1562 | a672b469 | aliguori | |
1563 | c163b5ca | lirans@il.ibm.com | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1564 | c163b5ca | lirans@il.ibm.com | if(se->set_params == NULL) { |
1565 | c163b5ca | lirans@il.ibm.com | continue;
|
1566 | c163b5ca | lirans@il.ibm.com | } |
1567 | c163b5ca | lirans@il.ibm.com | se->set_params(blk_enable, shared, se->opaque); |
1568 | c163b5ca | lirans@il.ibm.com | } |
1569 | c163b5ca | lirans@il.ibm.com | |
1570 | a672b469 | aliguori | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); |
1571 | a672b469 | aliguori | qemu_put_be32(f, QEMU_VM_FILE_VERSION); |
1572 | a672b469 | aliguori | |
1573 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1574 | a672b469 | aliguori | int len;
|
1575 | a672b469 | aliguori | |
1576 | a672b469 | aliguori | if (se->save_live_state == NULL) |
1577 | a672b469 | aliguori | continue;
|
1578 | a672b469 | aliguori | |
1579 | a672b469 | aliguori | /* Section type */
|
1580 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_START); |
1581 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1582 | a672b469 | aliguori | |
1583 | a672b469 | aliguori | /* ID string */
|
1584 | a672b469 | aliguori | len = strlen(se->idstr); |
1585 | a672b469 | aliguori | qemu_put_byte(f, len); |
1586 | a672b469 | aliguori | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
1587 | a672b469 | aliguori | |
1588 | a672b469 | aliguori | qemu_put_be32(f, se->instance_id); |
1589 | a672b469 | aliguori | qemu_put_be32(f, se->version_id); |
1590 | a672b469 | aliguori | |
1591 | 2975725f | Juan Quintela | ret = se->save_live_state(mon, f, QEMU_VM_SECTION_START, se->opaque); |
1592 | 2975725f | Juan Quintela | if (ret < 0) { |
1593 | 2975725f | Juan Quintela | qemu_savevm_state_cancel(mon, f); |
1594 | 2975725f | Juan Quintela | return ret;
|
1595 | 2975725f | Juan Quintela | } |
1596 | a672b469 | aliguori | } |
1597 | 624b9cc2 | Juan Quintela | ret = qemu_file_get_error(f); |
1598 | 39346385 | Juan Quintela | if (ret != 0) { |
1599 | f327aa0c | Jan Kiszka | qemu_savevm_state_cancel(mon, f); |
1600 | 4ec7fcc7 | Jan Kiszka | } |
1601 | a672b469 | aliguori | |
1602 | 39346385 | Juan Quintela | return ret;
|
1603 | 39346385 | Juan Quintela | |
1604 | a672b469 | aliguori | } |
1605 | a672b469 | aliguori | |
1606 | 39346385 | Juan Quintela | /*
|
1607 | 07f35073 | Dong Xu Wang | * this function has three return values:
|
1608 | 39346385 | Juan Quintela | * negative: there was one error, and we have -errno.
|
1609 | 39346385 | Juan Quintela | * 0 : We haven't finished, caller have to go again
|
1610 | 39346385 | Juan Quintela | * 1 : We have finished, we can go to complete phase
|
1611 | 39346385 | Juan Quintela | */
|
1612 | f327aa0c | Jan Kiszka | int qemu_savevm_state_iterate(Monitor *mon, QEMUFile *f)
|
1613 | a672b469 | aliguori | { |
1614 | a672b469 | aliguori | SaveStateEntry *se; |
1615 | a672b469 | aliguori | int ret = 1; |
1616 | a672b469 | aliguori | |
1617 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1618 | a672b469 | aliguori | if (se->save_live_state == NULL) |
1619 | a672b469 | aliguori | continue;
|
1620 | a672b469 | aliguori | |
1621 | a672b469 | aliguori | /* Section type */
|
1622 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_PART); |
1623 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1624 | a672b469 | aliguori | |
1625 | 90697be8 | Jan Kiszka | ret = se->save_live_state(mon, f, QEMU_VM_SECTION_PART, se->opaque); |
1626 | 2975725f | Juan Quintela | if (ret <= 0) { |
1627 | 90697be8 | Jan Kiszka | /* Do not proceed to the next vmstate before this one reported
|
1628 | 90697be8 | Jan Kiszka | completion of the current stage. This serializes the migration
|
1629 | 90697be8 | Jan Kiszka | and reduces the probability that a faster changing state is
|
1630 | 90697be8 | Jan Kiszka | synchronized over and over again. */
|
1631 | 90697be8 | Jan Kiszka | break;
|
1632 | 90697be8 | Jan Kiszka | } |
1633 | a672b469 | aliguori | } |
1634 | 39346385 | Juan Quintela | if (ret != 0) { |
1635 | 39346385 | Juan Quintela | return ret;
|
1636 | 39346385 | Juan Quintela | } |
1637 | 624b9cc2 | Juan Quintela | ret = qemu_file_get_error(f); |
1638 | 39346385 | Juan Quintela | if (ret != 0) { |
1639 | f327aa0c | Jan Kiszka | qemu_savevm_state_cancel(mon, f); |
1640 | 4ec7fcc7 | Jan Kiszka | } |
1641 | 39346385 | Juan Quintela | return ret;
|
1642 | a672b469 | aliguori | } |
1643 | a672b469 | aliguori | |
1644 | f327aa0c | Jan Kiszka | int qemu_savevm_state_complete(Monitor *mon, QEMUFile *f)
|
1645 | a672b469 | aliguori | { |
1646 | a672b469 | aliguori | SaveStateEntry *se; |
1647 | 2975725f | Juan Quintela | int ret;
|
1648 | a672b469 | aliguori | |
1649 | ea375f9a | Jan Kiszka | cpu_synchronize_all_states(); |
1650 | ea375f9a | Jan Kiszka | |
1651 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1652 | a672b469 | aliguori | if (se->save_live_state == NULL) |
1653 | a672b469 | aliguori | continue;
|
1654 | a672b469 | aliguori | |
1655 | a672b469 | aliguori | /* Section type */
|
1656 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_END); |
1657 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1658 | a672b469 | aliguori | |
1659 | 2975725f | Juan Quintela | ret = se->save_live_state(mon, f, QEMU_VM_SECTION_END, se->opaque); |
1660 | 2975725f | Juan Quintela | if (ret < 0) { |
1661 | 2975725f | Juan Quintela | return ret;
|
1662 | 2975725f | Juan Quintela | } |
1663 | a672b469 | aliguori | } |
1664 | a672b469 | aliguori | |
1665 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1666 | a672b469 | aliguori | int len;
|
1667 | a672b469 | aliguori | |
1668 | 9ed7d6ae | Juan Quintela | if (se->save_state == NULL && se->vmsd == NULL) |
1669 | a672b469 | aliguori | continue;
|
1670 | a672b469 | aliguori | |
1671 | a672b469 | aliguori | /* Section type */
|
1672 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_FULL); |
1673 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1674 | a672b469 | aliguori | |
1675 | a672b469 | aliguori | /* ID string */
|
1676 | a672b469 | aliguori | len = strlen(se->idstr); |
1677 | a672b469 | aliguori | qemu_put_byte(f, len); |
1678 | a672b469 | aliguori | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
1679 | a672b469 | aliguori | |
1680 | a672b469 | aliguori | qemu_put_be32(f, se->instance_id); |
1681 | a672b469 | aliguori | qemu_put_be32(f, se->version_id); |
1682 | a672b469 | aliguori | |
1683 | dc912121 | Alex Williamson | vmstate_save(f, se); |
1684 | a672b469 | aliguori | } |
1685 | a672b469 | aliguori | |
1686 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_EOF); |
1687 | a672b469 | aliguori | |
1688 | 624b9cc2 | Juan Quintela | return qemu_file_get_error(f);
|
1689 | a672b469 | aliguori | } |
1690 | a672b469 | aliguori | |
1691 | f327aa0c | Jan Kiszka | void qemu_savevm_state_cancel(Monitor *mon, QEMUFile *f)
|
1692 | 4ec7fcc7 | Jan Kiszka | { |
1693 | 4ec7fcc7 | Jan Kiszka | SaveStateEntry *se; |
1694 | 4ec7fcc7 | Jan Kiszka | |
1695 | 4ec7fcc7 | Jan Kiszka | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1696 | 4ec7fcc7 | Jan Kiszka | if (se->save_live_state) {
|
1697 | f327aa0c | Jan Kiszka | se->save_live_state(mon, f, -1, se->opaque);
|
1698 | 4ec7fcc7 | Jan Kiszka | } |
1699 | 4ec7fcc7 | Jan Kiszka | } |
1700 | 4ec7fcc7 | Jan Kiszka | } |
1701 | 4ec7fcc7 | Jan Kiszka | |
1702 | f327aa0c | Jan Kiszka | static int qemu_savevm_state(Monitor *mon, QEMUFile *f) |
1703 | a672b469 | aliguori | { |
1704 | a672b469 | aliguori | int ret;
|
1705 | a672b469 | aliguori | |
1706 | dc912121 | Alex Williamson | if (qemu_savevm_state_blocked(mon)) {
|
1707 | dc912121 | Alex Williamson | ret = -EINVAL; |
1708 | dc912121 | Alex Williamson | goto out;
|
1709 | dc912121 | Alex Williamson | } |
1710 | dc912121 | Alex Williamson | |
1711 | f327aa0c | Jan Kiszka | ret = qemu_savevm_state_begin(mon, f, 0, 0); |
1712 | a672b469 | aliguori | if (ret < 0) |
1713 | a672b469 | aliguori | goto out;
|
1714 | a672b469 | aliguori | |
1715 | a672b469 | aliguori | do {
|
1716 | f327aa0c | Jan Kiszka | ret = qemu_savevm_state_iterate(mon, f); |
1717 | a672b469 | aliguori | if (ret < 0) |
1718 | a672b469 | aliguori | goto out;
|
1719 | a672b469 | aliguori | } while (ret == 0); |
1720 | a672b469 | aliguori | |
1721 | f327aa0c | Jan Kiszka | ret = qemu_savevm_state_complete(mon, f); |
1722 | a672b469 | aliguori | |
1723 | a672b469 | aliguori | out:
|
1724 | 39346385 | Juan Quintela | if (ret == 0) { |
1725 | 624b9cc2 | Juan Quintela | ret = qemu_file_get_error(f); |
1726 | 39346385 | Juan Quintela | } |
1727 | a672b469 | aliguori | |
1728 | a672b469 | aliguori | return ret;
|
1729 | a672b469 | aliguori | } |
1730 | a672b469 | aliguori | |
1731 | a672b469 | aliguori | static SaveStateEntry *find_se(const char *idstr, int instance_id) |
1732 | a672b469 | aliguori | { |
1733 | a672b469 | aliguori | SaveStateEntry *se; |
1734 | a672b469 | aliguori | |
1735 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1736 | a672b469 | aliguori | if (!strcmp(se->idstr, idstr) &&
|
1737 | 4d2ffa08 | Jan Kiszka | (instance_id == se->instance_id || |
1738 | 4d2ffa08 | Jan Kiszka | instance_id == se->alias_id)) |
1739 | a672b469 | aliguori | return se;
|
1740 | 7685ee6a | Alex Williamson | /* Migrating from an older version? */
|
1741 | 7685ee6a | Alex Williamson | if (strstr(se->idstr, idstr) && se->compat) {
|
1742 | 7685ee6a | Alex Williamson | if (!strcmp(se->compat->idstr, idstr) &&
|
1743 | 7685ee6a | Alex Williamson | (instance_id == se->compat->instance_id || |
1744 | 7685ee6a | Alex Williamson | instance_id == se->alias_id)) |
1745 | 7685ee6a | Alex Williamson | return se;
|
1746 | 7685ee6a | Alex Williamson | } |
1747 | a672b469 | aliguori | } |
1748 | a672b469 | aliguori | return NULL; |
1749 | a672b469 | aliguori | } |
1750 | a672b469 | aliguori | |
1751 | 811814bd | Juan Quintela | static const VMStateDescription *vmstate_get_subsection(const VMStateSubsection *sub, char *idstr) |
1752 | 811814bd | Juan Quintela | { |
1753 | 811814bd | Juan Quintela | while(sub && sub->needed) {
|
1754 | 811814bd | Juan Quintela | if (strcmp(idstr, sub->vmsd->name) == 0) { |
1755 | 811814bd | Juan Quintela | return sub->vmsd;
|
1756 | 811814bd | Juan Quintela | } |
1757 | 811814bd | Juan Quintela | sub++; |
1758 | 811814bd | Juan Quintela | } |
1759 | 811814bd | Juan Quintela | return NULL; |
1760 | 811814bd | Juan Quintela | } |
1761 | 811814bd | Juan Quintela | |
1762 | 811814bd | Juan Quintela | static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd, |
1763 | 811814bd | Juan Quintela | void *opaque)
|
1764 | 811814bd | Juan Quintela | { |
1765 | c6380724 | Juan Quintela | while (qemu_peek_byte(f, 0) == QEMU_VM_SUBSECTION) { |
1766 | 811814bd | Juan Quintela | char idstr[256]; |
1767 | 811814bd | Juan Quintela | int ret;
|
1768 | c6380724 | Juan Quintela | uint8_t version_id, len, size; |
1769 | 811814bd | Juan Quintela | const VMStateDescription *sub_vmsd;
|
1770 | 811814bd | Juan Quintela | |
1771 | c6380724 | Juan Quintela | len = qemu_peek_byte(f, 1);
|
1772 | c6380724 | Juan Quintela | if (len < strlen(vmsd->name) + 1) { |
1773 | c6380724 | Juan Quintela | /* subsection name has be be "section_name/a" */
|
1774 | c6380724 | Juan Quintela | return 0; |
1775 | c6380724 | Juan Quintela | } |
1776 | c6380724 | Juan Quintela | size = qemu_peek_buffer(f, (uint8_t *)idstr, len, 2);
|
1777 | c6380724 | Juan Quintela | if (size != len) {
|
1778 | c6380724 | Juan Quintela | return 0; |
1779 | c6380724 | Juan Quintela | } |
1780 | c6380724 | Juan Quintela | idstr[size] = 0;
|
1781 | 811814bd | Juan Quintela | |
1782 | c6380724 | Juan Quintela | if (strncmp(vmsd->name, idstr, strlen(vmsd->name)) != 0) { |
1783 | c6380724 | Juan Quintela | /* it don't have a valid subsection name */
|
1784 | c6380724 | Juan Quintela | return 0; |
1785 | c6380724 | Juan Quintela | } |
1786 | 3da9eebd | Juan Quintela | sub_vmsd = vmstate_get_subsection(vmsd->subsections, idstr); |
1787 | 811814bd | Juan Quintela | if (sub_vmsd == NULL) { |
1788 | 811814bd | Juan Quintela | return -ENOENT;
|
1789 | 811814bd | Juan Quintela | } |
1790 | c6380724 | Juan Quintela | qemu_file_skip(f, 1); /* subsection */ |
1791 | c6380724 | Juan Quintela | qemu_file_skip(f, 1); /* len */ |
1792 | c6380724 | Juan Quintela | qemu_file_skip(f, len); /* idstr */
|
1793 | c6380724 | Juan Quintela | version_id = qemu_get_be32(f); |
1794 | c6380724 | Juan Quintela | |
1795 | 811814bd | Juan Quintela | ret = vmstate_load_state(f, sub_vmsd, opaque, version_id); |
1796 | 811814bd | Juan Quintela | if (ret) {
|
1797 | 811814bd | Juan Quintela | return ret;
|
1798 | 811814bd | Juan Quintela | } |
1799 | 811814bd | Juan Quintela | } |
1800 | 811814bd | Juan Quintela | return 0; |
1801 | 811814bd | Juan Quintela | } |
1802 | 811814bd | Juan Quintela | |
1803 | 811814bd | Juan Quintela | static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd, |
1804 | 811814bd | Juan Quintela | void *opaque)
|
1805 | 811814bd | Juan Quintela | { |
1806 | 811814bd | Juan Quintela | const VMStateSubsection *sub = vmsd->subsections;
|
1807 | 811814bd | Juan Quintela | |
1808 | 811814bd | Juan Quintela | while (sub && sub->needed) {
|
1809 | 811814bd | Juan Quintela | if (sub->needed(opaque)) {
|
1810 | 811814bd | Juan Quintela | const VMStateDescription *vmsd = sub->vmsd;
|
1811 | 811814bd | Juan Quintela | uint8_t len; |
1812 | 811814bd | Juan Quintela | |
1813 | 811814bd | Juan Quintela | qemu_put_byte(f, QEMU_VM_SUBSECTION); |
1814 | 811814bd | Juan Quintela | len = strlen(vmsd->name); |
1815 | 811814bd | Juan Quintela | qemu_put_byte(f, len); |
1816 | 811814bd | Juan Quintela | qemu_put_buffer(f, (uint8_t *)vmsd->name, len); |
1817 | 811814bd | Juan Quintela | qemu_put_be32(f, vmsd->version_id); |
1818 | 811814bd | Juan Quintela | vmstate_save_state(f, vmsd, opaque); |
1819 | 811814bd | Juan Quintela | } |
1820 | 811814bd | Juan Quintela | sub++; |
1821 | 811814bd | Juan Quintela | } |
1822 | 811814bd | Juan Quintela | } |
1823 | 811814bd | Juan Quintela | |
1824 | a672b469 | aliguori | typedef struct LoadStateEntry { |
1825 | 72cf2d4f | Blue Swirl | QLIST_ENTRY(LoadStateEntry) entry; |
1826 | a672b469 | aliguori | SaveStateEntry *se; |
1827 | a672b469 | aliguori | int section_id;
|
1828 | a672b469 | aliguori | int version_id;
|
1829 | a672b469 | aliguori | } LoadStateEntry; |
1830 | a672b469 | aliguori | |
1831 | a672b469 | aliguori | int qemu_loadvm_state(QEMUFile *f)
|
1832 | a672b469 | aliguori | { |
1833 | 72cf2d4f | Blue Swirl | QLIST_HEAD(, LoadStateEntry) loadvm_handlers = |
1834 | 72cf2d4f | Blue Swirl | QLIST_HEAD_INITIALIZER(loadvm_handlers); |
1835 | f4dbb8dd | Juan Quintela | LoadStateEntry *le, *new_le; |
1836 | a672b469 | aliguori | uint8_t section_type; |
1837 | a672b469 | aliguori | unsigned int v; |
1838 | a672b469 | aliguori | int ret;
|
1839 | a672b469 | aliguori | |
1840 | dc912121 | Alex Williamson | if (qemu_savevm_state_blocked(default_mon)) {
|
1841 | dc912121 | Alex Williamson | return -EINVAL;
|
1842 | dc912121 | Alex Williamson | } |
1843 | dc912121 | Alex Williamson | |
1844 | a672b469 | aliguori | v = qemu_get_be32(f); |
1845 | a672b469 | aliguori | if (v != QEMU_VM_FILE_MAGIC)
|
1846 | a672b469 | aliguori | return -EINVAL;
|
1847 | a672b469 | aliguori | |
1848 | a672b469 | aliguori | v = qemu_get_be32(f); |
1849 | bbfe1408 | Juan Quintela | if (v == QEMU_VM_FILE_VERSION_COMPAT) {
|
1850 | bbfe1408 | Juan Quintela | fprintf(stderr, "SaveVM v2 format is obsolete and don't work anymore\n");
|
1851 | bbfe1408 | Juan Quintela | return -ENOTSUP;
|
1852 | bbfe1408 | Juan Quintela | } |
1853 | a672b469 | aliguori | if (v != QEMU_VM_FILE_VERSION)
|
1854 | a672b469 | aliguori | return -ENOTSUP;
|
1855 | a672b469 | aliguori | |
1856 | a672b469 | aliguori | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) {
|
1857 | a672b469 | aliguori | uint32_t instance_id, version_id, section_id; |
1858 | a672b469 | aliguori | SaveStateEntry *se; |
1859 | a672b469 | aliguori | char idstr[257]; |
1860 | a672b469 | aliguori | int len;
|
1861 | a672b469 | aliguori | |
1862 | a672b469 | aliguori | switch (section_type) {
|
1863 | a672b469 | aliguori | case QEMU_VM_SECTION_START:
|
1864 | a672b469 | aliguori | case QEMU_VM_SECTION_FULL:
|
1865 | a672b469 | aliguori | /* Read section start */
|
1866 | a672b469 | aliguori | section_id = qemu_get_be32(f); |
1867 | a672b469 | aliguori | len = qemu_get_byte(f); |
1868 | a672b469 | aliguori | qemu_get_buffer(f, (uint8_t *)idstr, len); |
1869 | a672b469 | aliguori | idstr[len] = 0;
|
1870 | a672b469 | aliguori | instance_id = qemu_get_be32(f); |
1871 | a672b469 | aliguori | version_id = qemu_get_be32(f); |
1872 | a672b469 | aliguori | |
1873 | a672b469 | aliguori | /* Find savevm section */
|
1874 | a672b469 | aliguori | se = find_se(idstr, instance_id); |
1875 | a672b469 | aliguori | if (se == NULL) { |
1876 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id);
|
1877 | a672b469 | aliguori | ret = -EINVAL; |
1878 | a672b469 | aliguori | goto out;
|
1879 | a672b469 | aliguori | } |
1880 | a672b469 | aliguori | |
1881 | a672b469 | aliguori | /* Validate version */
|
1882 | a672b469 | aliguori | if (version_id > se->version_id) {
|
1883 | a672b469 | aliguori | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n",
|
1884 | a672b469 | aliguori | version_id, idstr, se->version_id); |
1885 | a672b469 | aliguori | ret = -EINVAL; |
1886 | a672b469 | aliguori | goto out;
|
1887 | a672b469 | aliguori | } |
1888 | a672b469 | aliguori | |
1889 | a672b469 | aliguori | /* Add entry */
|
1890 | 7267c094 | Anthony Liguori | le = g_malloc0(sizeof(*le));
|
1891 | a672b469 | aliguori | |
1892 | a672b469 | aliguori | le->se = se; |
1893 | a672b469 | aliguori | le->section_id = section_id; |
1894 | a672b469 | aliguori | le->version_id = version_id; |
1895 | 72cf2d4f | Blue Swirl | QLIST_INSERT_HEAD(&loadvm_handlers, le, entry); |
1896 | a672b469 | aliguori | |
1897 | 4082be4d | Juan Quintela | ret = vmstate_load(f, le->se, le->version_id); |
1898 | b5a22e4a | Juan Quintela | if (ret < 0) { |
1899 | b5a22e4a | Juan Quintela | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n",
|
1900 | b5a22e4a | Juan Quintela | instance_id, idstr); |
1901 | b5a22e4a | Juan Quintela | goto out;
|
1902 | b5a22e4a | Juan Quintela | } |
1903 | a672b469 | aliguori | break;
|
1904 | a672b469 | aliguori | case QEMU_VM_SECTION_PART:
|
1905 | a672b469 | aliguori | case QEMU_VM_SECTION_END:
|
1906 | a672b469 | aliguori | section_id = qemu_get_be32(f); |
1907 | a672b469 | aliguori | |
1908 | 72cf2d4f | Blue Swirl | QLIST_FOREACH(le, &loadvm_handlers, entry) { |
1909 | f4dbb8dd | Juan Quintela | if (le->section_id == section_id) {
|
1910 | f4dbb8dd | Juan Quintela | break;
|
1911 | f4dbb8dd | Juan Quintela | } |
1912 | f4dbb8dd | Juan Quintela | } |
1913 | a672b469 | aliguori | if (le == NULL) { |
1914 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section %d\n", section_id);
|
1915 | a672b469 | aliguori | ret = -EINVAL; |
1916 | a672b469 | aliguori | goto out;
|
1917 | a672b469 | aliguori | } |
1918 | a672b469 | aliguori | |
1919 | 4082be4d | Juan Quintela | ret = vmstate_load(f, le->se, le->version_id); |
1920 | b5a22e4a | Juan Quintela | if (ret < 0) { |
1921 | b5a22e4a | Juan Quintela | fprintf(stderr, "qemu: warning: error while loading state section id %d\n",
|
1922 | b5a22e4a | Juan Quintela | section_id); |
1923 | b5a22e4a | Juan Quintela | goto out;
|
1924 | b5a22e4a | Juan Quintela | } |
1925 | a672b469 | aliguori | break;
|
1926 | a672b469 | aliguori | default:
|
1927 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section type %d\n", section_type);
|
1928 | a672b469 | aliguori | ret = -EINVAL; |
1929 | a672b469 | aliguori | goto out;
|
1930 | a672b469 | aliguori | } |
1931 | a672b469 | aliguori | } |
1932 | a672b469 | aliguori | |
1933 | ea375f9a | Jan Kiszka | cpu_synchronize_all_post_init(); |
1934 | ea375f9a | Jan Kiszka | |
1935 | a672b469 | aliguori | ret = 0;
|
1936 | a672b469 | aliguori | |
1937 | a672b469 | aliguori | out:
|
1938 | 72cf2d4f | Blue Swirl | QLIST_FOREACH_SAFE(le, &loadvm_handlers, entry, new_le) { |
1939 | 72cf2d4f | Blue Swirl | QLIST_REMOVE(le, entry); |
1940 | 7267c094 | Anthony Liguori | g_free(le); |
1941 | a672b469 | aliguori | } |
1942 | a672b469 | aliguori | |
1943 | 42802d47 | Juan Quintela | if (ret == 0) { |
1944 | 42802d47 | Juan Quintela | ret = qemu_file_get_error(f); |
1945 | 624b9cc2 | Juan Quintela | } |
1946 | a672b469 | aliguori | |
1947 | a672b469 | aliguori | return ret;
|
1948 | a672b469 | aliguori | } |
1949 | a672b469 | aliguori | |
1950 | a672b469 | aliguori | static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, |
1951 | a672b469 | aliguori | const char *name) |
1952 | a672b469 | aliguori | { |
1953 | a672b469 | aliguori | QEMUSnapshotInfo *sn_tab, *sn; |
1954 | a672b469 | aliguori | int nb_sns, i, ret;
|
1955 | a672b469 | aliguori | |
1956 | a672b469 | aliguori | ret = -ENOENT; |
1957 | a672b469 | aliguori | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
1958 | a672b469 | aliguori | if (nb_sns < 0) |
1959 | a672b469 | aliguori | return ret;
|
1960 | a672b469 | aliguori | for(i = 0; i < nb_sns; i++) { |
1961 | a672b469 | aliguori | sn = &sn_tab[i]; |
1962 | a672b469 | aliguori | if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) {
|
1963 | a672b469 | aliguori | *sn_info = *sn; |
1964 | a672b469 | aliguori | ret = 0;
|
1965 | a672b469 | aliguori | break;
|
1966 | a672b469 | aliguori | } |
1967 | a672b469 | aliguori | } |
1968 | 7267c094 | Anthony Liguori | g_free(sn_tab); |
1969 | a672b469 | aliguori | return ret;
|
1970 | a672b469 | aliguori | } |
1971 | a672b469 | aliguori | |
1972 | cb499fb2 | Kevin Wolf | /*
|
1973 | cb499fb2 | Kevin Wolf | * Deletes snapshots of a given name in all opened images.
|
1974 | cb499fb2 | Kevin Wolf | */
|
1975 | cb499fb2 | Kevin Wolf | static int del_existing_snapshots(Monitor *mon, const char *name) |
1976 | cb499fb2 | Kevin Wolf | { |
1977 | cb499fb2 | Kevin Wolf | BlockDriverState *bs; |
1978 | cb499fb2 | Kevin Wolf | QEMUSnapshotInfo sn1, *snapshot = &sn1; |
1979 | cb499fb2 | Kevin Wolf | int ret;
|
1980 | cb499fb2 | Kevin Wolf | |
1981 | dbc13590 | Markus Armbruster | bs = NULL;
|
1982 | dbc13590 | Markus Armbruster | while ((bs = bdrv_next(bs))) {
|
1983 | cb499fb2 | Kevin Wolf | if (bdrv_can_snapshot(bs) &&
|
1984 | cb499fb2 | Kevin Wolf | bdrv_snapshot_find(bs, snapshot, name) >= 0)
|
1985 | cb499fb2 | Kevin Wolf | { |
1986 | cb499fb2 | Kevin Wolf | ret = bdrv_snapshot_delete(bs, name); |
1987 | cb499fb2 | Kevin Wolf | if (ret < 0) { |
1988 | cb499fb2 | Kevin Wolf | monitor_printf(mon, |
1989 | cb499fb2 | Kevin Wolf | "Error while deleting snapshot on '%s'\n",
|
1990 | cb499fb2 | Kevin Wolf | bdrv_get_device_name(bs)); |
1991 | cb499fb2 | Kevin Wolf | return -1; |
1992 | cb499fb2 | Kevin Wolf | } |
1993 | cb499fb2 | Kevin Wolf | } |
1994 | cb499fb2 | Kevin Wolf | } |
1995 | cb499fb2 | Kevin Wolf | |
1996 | cb499fb2 | Kevin Wolf | return 0; |
1997 | cb499fb2 | Kevin Wolf | } |
1998 | cb499fb2 | Kevin Wolf | |
1999 | d54908a5 | Luiz Capitulino | void do_savevm(Monitor *mon, const QDict *qdict) |
2000 | a672b469 | aliguori | { |
2001 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
2002 | a672b469 | aliguori | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; |
2003 | cb499fb2 | Kevin Wolf | int ret;
|
2004 | a672b469 | aliguori | QEMUFile *f; |
2005 | a672b469 | aliguori | int saved_vm_running;
|
2006 | c2c9a466 | Kevin Wolf | uint64_t vm_state_size; |
2007 | a672b469 | aliguori | #ifdef _WIN32
|
2008 | a672b469 | aliguori | struct _timeb tb;
|
2009 | 7d631a11 | Miguel Di Ciurcio Filho | struct tm *ptm;
|
2010 | a672b469 | aliguori | #else
|
2011 | a672b469 | aliguori | struct timeval tv;
|
2012 | 7d631a11 | Miguel Di Ciurcio Filho | struct tm tm;
|
2013 | a672b469 | aliguori | #endif
|
2014 | d54908a5 | Luiz Capitulino | const char *name = qdict_get_try_str(qdict, "name"); |
2015 | a672b469 | aliguori | |
2016 | feeee5ac | Miguel Di Ciurcio Filho | /* Verify if there is a device that doesn't support snapshots and is writable */
|
2017 | dbc13590 | Markus Armbruster | bs = NULL;
|
2018 | dbc13590 | Markus Armbruster | while ((bs = bdrv_next(bs))) {
|
2019 | feeee5ac | Miguel Di Ciurcio Filho | |
2020 | 07b70bfb | Markus Armbruster | if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) {
|
2021 | feeee5ac | Miguel Di Ciurcio Filho | continue;
|
2022 | feeee5ac | Miguel Di Ciurcio Filho | } |
2023 | feeee5ac | Miguel Di Ciurcio Filho | |
2024 | feeee5ac | Miguel Di Ciurcio Filho | if (!bdrv_can_snapshot(bs)) {
|
2025 | feeee5ac | Miguel Di Ciurcio Filho | monitor_printf(mon, "Device '%s' is writable but does not support snapshots.\n",
|
2026 | feeee5ac | Miguel Di Ciurcio Filho | bdrv_get_device_name(bs)); |
2027 | feeee5ac | Miguel Di Ciurcio Filho | return;
|
2028 | feeee5ac | Miguel Di Ciurcio Filho | } |
2029 | feeee5ac | Miguel Di Ciurcio Filho | } |
2030 | feeee5ac | Miguel Di Ciurcio Filho | |
2031 | f9092b10 | Markus Armbruster | bs = bdrv_snapshots(); |
2032 | a672b469 | aliguori | if (!bs) {
|
2033 | 376253ec | aliguori | monitor_printf(mon, "No block device can accept snapshots\n");
|
2034 | a672b469 | aliguori | return;
|
2035 | a672b469 | aliguori | } |
2036 | a672b469 | aliguori | |
2037 | 1354869c | Luiz Capitulino | saved_vm_running = runstate_is_running(); |
2038 | 0461d5a6 | Luiz Capitulino | vm_stop(RUN_STATE_SAVE_VM); |
2039 | a672b469 | aliguori | |
2040 | cb499fb2 | Kevin Wolf | memset(sn, 0, sizeof(*sn)); |
2041 | a672b469 | aliguori | |
2042 | a672b469 | aliguori | /* fill auxiliary fields */
|
2043 | a672b469 | aliguori | #ifdef _WIN32
|
2044 | a672b469 | aliguori | _ftime(&tb); |
2045 | a672b469 | aliguori | sn->date_sec = tb.time; |
2046 | a672b469 | aliguori | sn->date_nsec = tb.millitm * 1000000;
|
2047 | a672b469 | aliguori | #else
|
2048 | a672b469 | aliguori | gettimeofday(&tv, NULL);
|
2049 | a672b469 | aliguori | sn->date_sec = tv.tv_sec; |
2050 | a672b469 | aliguori | sn->date_nsec = tv.tv_usec * 1000;
|
2051 | a672b469 | aliguori | #endif
|
2052 | 74475455 | Paolo Bonzini | sn->vm_clock_nsec = qemu_get_clock_ns(vm_clock); |
2053 | a672b469 | aliguori | |
2054 | 7d631a11 | Miguel Di Ciurcio Filho | if (name) {
|
2055 | 7d631a11 | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_find(bs, old_sn, name); |
2056 | 7d631a11 | Miguel Di Ciurcio Filho | if (ret >= 0) { |
2057 | 7d631a11 | Miguel Di Ciurcio Filho | pstrcpy(sn->name, sizeof(sn->name), old_sn->name);
|
2058 | 7d631a11 | Miguel Di Ciurcio Filho | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str);
|
2059 | 7d631a11 | Miguel Di Ciurcio Filho | } else {
|
2060 | 7d631a11 | Miguel Di Ciurcio Filho | pstrcpy(sn->name, sizeof(sn->name), name);
|
2061 | 7d631a11 | Miguel Di Ciurcio Filho | } |
2062 | 7d631a11 | Miguel Di Ciurcio Filho | } else {
|
2063 | 7d631a11 | Miguel Di Ciurcio Filho | #ifdef _WIN32
|
2064 | 7d631a11 | Miguel Di Ciurcio Filho | ptm = localtime(&tb.time); |
2065 | 7d631a11 | Miguel Di Ciurcio Filho | strftime(sn->name, sizeof(sn->name), "vm-%Y%m%d%H%M%S", ptm); |
2066 | 7d631a11 | Miguel Di Ciurcio Filho | #else
|
2067 | d7d9b528 | Blue Swirl | /* cast below needed for OpenBSD where tv_sec is still 'long' */
|
2068 | d7d9b528 | Blue Swirl | localtime_r((const time_t *)&tv.tv_sec, &tm);
|
2069 | 7d631a11 | Miguel Di Ciurcio Filho | strftime(sn->name, sizeof(sn->name), "vm-%Y%m%d%H%M%S", &tm); |
2070 | 7d631a11 | Miguel Di Ciurcio Filho | #endif
|
2071 | 7d631a11 | Miguel Di Ciurcio Filho | } |
2072 | 7d631a11 | Miguel Di Ciurcio Filho | |
2073 | cb499fb2 | Kevin Wolf | /* Delete old snapshots of the same name */
|
2074 | f139a412 | Marcelo Tosatti | if (name && del_existing_snapshots(mon, name) < 0) { |
2075 | cb499fb2 | Kevin Wolf | goto the_end;
|
2076 | cb499fb2 | Kevin Wolf | } |
2077 | cb499fb2 | Kevin Wolf | |
2078 | a672b469 | aliguori | /* save the VM state */
|
2079 | 45566e9c | Christoph Hellwig | f = qemu_fopen_bdrv(bs, 1);
|
2080 | a672b469 | aliguori | if (!f) {
|
2081 | 376253ec | aliguori | monitor_printf(mon, "Could not open VM state file\n");
|
2082 | a672b469 | aliguori | goto the_end;
|
2083 | a672b469 | aliguori | } |
2084 | f327aa0c | Jan Kiszka | ret = qemu_savevm_state(mon, f); |
2085 | 2d22b18f | aliguori | vm_state_size = qemu_ftell(f); |
2086 | a672b469 | aliguori | qemu_fclose(f); |
2087 | a672b469 | aliguori | if (ret < 0) { |
2088 | 376253ec | aliguori | monitor_printf(mon, "Error %d while writing VM\n", ret);
|
2089 | a672b469 | aliguori | goto the_end;
|
2090 | a672b469 | aliguori | } |
2091 | a672b469 | aliguori | |
2092 | a672b469 | aliguori | /* create the snapshots */
|
2093 | a672b469 | aliguori | |
2094 | dbc13590 | Markus Armbruster | bs1 = NULL;
|
2095 | dbc13590 | Markus Armbruster | while ((bs1 = bdrv_next(bs1))) {
|
2096 | feeee5ac | Miguel Di Ciurcio Filho | if (bdrv_can_snapshot(bs1)) {
|
2097 | 2d22b18f | aliguori | /* Write VM state size only to the image that contains the state */
|
2098 | 2d22b18f | aliguori | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0);
|
2099 | a672b469 | aliguori | ret = bdrv_snapshot_create(bs1, sn); |
2100 | a672b469 | aliguori | if (ret < 0) { |
2101 | 376253ec | aliguori | monitor_printf(mon, "Error while creating snapshot on '%s'\n",
|
2102 | 376253ec | aliguori | bdrv_get_device_name(bs1)); |
2103 | a672b469 | aliguori | } |
2104 | a672b469 | aliguori | } |
2105 | a672b469 | aliguori | } |
2106 | a672b469 | aliguori | |
2107 | a672b469 | aliguori | the_end:
|
2108 | a672b469 | aliguori | if (saved_vm_running)
|
2109 | a672b469 | aliguori | vm_start(); |
2110 | a672b469 | aliguori | } |
2111 | a672b469 | aliguori | |
2112 | 03cd4655 | Markus Armbruster | int load_vmstate(const char *name) |
2113 | a672b469 | aliguori | { |
2114 | f0aa7a8b | Miguel Di Ciurcio Filho | BlockDriverState *bs, *bs_vm_state; |
2115 | 2d22b18f | aliguori | QEMUSnapshotInfo sn; |
2116 | a672b469 | aliguori | QEMUFile *f; |
2117 | 751c6a17 | Gerd Hoffmann | int ret;
|
2118 | a672b469 | aliguori | |
2119 | f0aa7a8b | Miguel Di Ciurcio Filho | bs_vm_state = bdrv_snapshots(); |
2120 | f0aa7a8b | Miguel Di Ciurcio Filho | if (!bs_vm_state) {
|
2121 | f0aa7a8b | Miguel Di Ciurcio Filho | error_report("No block device supports snapshots");
|
2122 | f0aa7a8b | Miguel Di Ciurcio Filho | return -ENOTSUP;
|
2123 | f0aa7a8b | Miguel Di Ciurcio Filho | } |
2124 | f0aa7a8b | Miguel Di Ciurcio Filho | |
2125 | f0aa7a8b | Miguel Di Ciurcio Filho | /* Don't even try to load empty VM states */
|
2126 | f0aa7a8b | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_find(bs_vm_state, &sn, name); |
2127 | f0aa7a8b | Miguel Di Ciurcio Filho | if (ret < 0) { |
2128 | f0aa7a8b | Miguel Di Ciurcio Filho | return ret;
|
2129 | f0aa7a8b | Miguel Di Ciurcio Filho | } else if (sn.vm_state_size == 0) { |
2130 | e11480db | Kevin Wolf | error_report("This is a disk-only snapshot. Revert to it offline "
|
2131 | e11480db | Kevin Wolf | "using qemu-img.");
|
2132 | f0aa7a8b | Miguel Di Ciurcio Filho | return -EINVAL;
|
2133 | f0aa7a8b | Miguel Di Ciurcio Filho | } |
2134 | f0aa7a8b | Miguel Di Ciurcio Filho | |
2135 | f0aa7a8b | Miguel Di Ciurcio Filho | /* Verify if there is any device that doesn't support snapshots and is
|
2136 | f0aa7a8b | Miguel Di Ciurcio Filho | writable and check if the requested snapshot is available too. */
|
2137 | dbc13590 | Markus Armbruster | bs = NULL;
|
2138 | dbc13590 | Markus Armbruster | while ((bs = bdrv_next(bs))) {
|
2139 | feeee5ac | Miguel Di Ciurcio Filho | |
2140 | 07b70bfb | Markus Armbruster | if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) {
|
2141 | feeee5ac | Miguel Di Ciurcio Filho | continue;
|
2142 | feeee5ac | Miguel Di Ciurcio Filho | } |
2143 | feeee5ac | Miguel Di Ciurcio Filho | |
2144 | feeee5ac | Miguel Di Ciurcio Filho | if (!bdrv_can_snapshot(bs)) {
|
2145 | feeee5ac | Miguel Di Ciurcio Filho | error_report("Device '%s' is writable but does not support snapshots.",
|
2146 | feeee5ac | Miguel Di Ciurcio Filho | bdrv_get_device_name(bs)); |
2147 | feeee5ac | Miguel Di Ciurcio Filho | return -ENOTSUP;
|
2148 | feeee5ac | Miguel Di Ciurcio Filho | } |
2149 | feeee5ac | Miguel Di Ciurcio Filho | |
2150 | f0aa7a8b | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_find(bs, &sn, name); |
2151 | f0aa7a8b | Miguel Di Ciurcio Filho | if (ret < 0) { |
2152 | f0aa7a8b | Miguel Di Ciurcio Filho | error_report("Device '%s' does not have the requested snapshot '%s'",
|
2153 | f0aa7a8b | Miguel Di Ciurcio Filho | bdrv_get_device_name(bs), name); |
2154 | f0aa7a8b | Miguel Di Ciurcio Filho | return ret;
|
2155 | f0aa7a8b | Miguel Di Ciurcio Filho | } |
2156 | a672b469 | aliguori | } |
2157 | a672b469 | aliguori | |
2158 | a672b469 | aliguori | /* Flush all IO requests so they don't interfere with the new state. */
|
2159 | 922453bc | Stefan Hajnoczi | bdrv_drain_all(); |
2160 | a672b469 | aliguori | |
2161 | f0aa7a8b | Miguel Di Ciurcio Filho | bs = NULL;
|
2162 | f0aa7a8b | Miguel Di Ciurcio Filho | while ((bs = bdrv_next(bs))) {
|
2163 | f0aa7a8b | Miguel Di Ciurcio Filho | if (bdrv_can_snapshot(bs)) {
|
2164 | f0aa7a8b | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_goto(bs, name); |
2165 | a672b469 | aliguori | if (ret < 0) { |
2166 | f0aa7a8b | Miguel Di Ciurcio Filho | error_report("Error %d while activating snapshot '%s' on '%s'",
|
2167 | f0aa7a8b | Miguel Di Ciurcio Filho | ret, name, bdrv_get_device_name(bs)); |
2168 | f0aa7a8b | Miguel Di Ciurcio Filho | return ret;
|
2169 | a672b469 | aliguori | } |
2170 | a672b469 | aliguori | } |
2171 | a672b469 | aliguori | } |
2172 | a672b469 | aliguori | |
2173 | a672b469 | aliguori | /* restore the VM state */
|
2174 | f0aa7a8b | Miguel Di Ciurcio Filho | f = qemu_fopen_bdrv(bs_vm_state, 0);
|
2175 | a672b469 | aliguori | if (!f) {
|
2176 | 1ecda02b | Markus Armbruster | error_report("Could not open VM state file");
|
2177 | 05f2401e | Juan Quintela | return -EINVAL;
|
2178 | a672b469 | aliguori | } |
2179 | f0aa7a8b | Miguel Di Ciurcio Filho | |
2180 | 5a8a49d7 | Jan Kiszka | qemu_system_reset(VMRESET_SILENT); |
2181 | a672b469 | aliguori | ret = qemu_loadvm_state(f); |
2182 | f0aa7a8b | Miguel Di Ciurcio Filho | |
2183 | a672b469 | aliguori | qemu_fclose(f); |
2184 | a672b469 | aliguori | if (ret < 0) { |
2185 | 1ecda02b | Markus Armbruster | error_report("Error %d while loading VM state", ret);
|
2186 | 05f2401e | Juan Quintela | return ret;
|
2187 | a672b469 | aliguori | } |
2188 | f0aa7a8b | Miguel Di Ciurcio Filho | |
2189 | 05f2401e | Juan Quintela | return 0; |
2190 | 7b630349 | Juan Quintela | } |
2191 | 7b630349 | Juan Quintela | |
2192 | d54908a5 | Luiz Capitulino | void do_delvm(Monitor *mon, const QDict *qdict) |
2193 | a672b469 | aliguori | { |
2194 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
2195 | 751c6a17 | Gerd Hoffmann | int ret;
|
2196 | d54908a5 | Luiz Capitulino | const char *name = qdict_get_str(qdict, "name"); |
2197 | a672b469 | aliguori | |
2198 | f9092b10 | Markus Armbruster | bs = bdrv_snapshots(); |
2199 | a672b469 | aliguori | if (!bs) {
|
2200 | 376253ec | aliguori | monitor_printf(mon, "No block device supports snapshots\n");
|
2201 | a672b469 | aliguori | return;
|
2202 | a672b469 | aliguori | } |
2203 | a672b469 | aliguori | |
2204 | dbc13590 | Markus Armbruster | bs1 = NULL;
|
2205 | dbc13590 | Markus Armbruster | while ((bs1 = bdrv_next(bs1))) {
|
2206 | feeee5ac | Miguel Di Ciurcio Filho | if (bdrv_can_snapshot(bs1)) {
|
2207 | a672b469 | aliguori | ret = bdrv_snapshot_delete(bs1, name); |
2208 | a672b469 | aliguori | if (ret < 0) { |
2209 | a672b469 | aliguori | if (ret == -ENOTSUP)
|
2210 | 376253ec | aliguori | monitor_printf(mon, |
2211 | 376253ec | aliguori | "Snapshots not supported on device '%s'\n",
|
2212 | 376253ec | aliguori | bdrv_get_device_name(bs1)); |
2213 | a672b469 | aliguori | else
|
2214 | 376253ec | aliguori | monitor_printf(mon, "Error %d while deleting snapshot on "
|
2215 | 376253ec | aliguori | "'%s'\n", ret, bdrv_get_device_name(bs1));
|
2216 | a672b469 | aliguori | } |
2217 | a672b469 | aliguori | } |
2218 | a672b469 | aliguori | } |
2219 | a672b469 | aliguori | } |
2220 | a672b469 | aliguori | |
2221 | 376253ec | aliguori | void do_info_snapshots(Monitor *mon)
|
2222 | a672b469 | aliguori | { |
2223 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
2224 | f9209915 | Miguel Di Ciurcio Filho | QEMUSnapshotInfo *sn_tab, *sn, s, *sn_info = &s; |
2225 | f9209915 | Miguel Di Ciurcio Filho | int nb_sns, i, ret, available;
|
2226 | f9209915 | Miguel Di Ciurcio Filho | int total;
|
2227 | f9209915 | Miguel Di Ciurcio Filho | int *available_snapshots;
|
2228 | a672b469 | aliguori | char buf[256]; |
2229 | a672b469 | aliguori | |
2230 | f9092b10 | Markus Armbruster | bs = bdrv_snapshots(); |
2231 | a672b469 | aliguori | if (!bs) {
|
2232 | 376253ec | aliguori | monitor_printf(mon, "No available block device supports snapshots\n");
|
2233 | a672b469 | aliguori | return;
|
2234 | a672b469 | aliguori | } |
2235 | a672b469 | aliguori | |
2236 | a672b469 | aliguori | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
2237 | a672b469 | aliguori | if (nb_sns < 0) { |
2238 | 376253ec | aliguori | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns);
|
2239 | a672b469 | aliguori | return;
|
2240 | a672b469 | aliguori | } |
2241 | f9209915 | Miguel Di Ciurcio Filho | |
2242 | f9209915 | Miguel Di Ciurcio Filho | if (nb_sns == 0) { |
2243 | f9209915 | Miguel Di Ciurcio Filho | monitor_printf(mon, "There is no snapshot available.\n");
|
2244 | f9209915 | Miguel Di Ciurcio Filho | return;
|
2245 | f9209915 | Miguel Di Ciurcio Filho | } |
2246 | f9209915 | Miguel Di Ciurcio Filho | |
2247 | 7267c094 | Anthony Liguori | available_snapshots = g_malloc0(sizeof(int) * nb_sns); |
2248 | f9209915 | Miguel Di Ciurcio Filho | total = 0;
|
2249 | f9209915 | Miguel Di Ciurcio Filho | for (i = 0; i < nb_sns; i++) { |
2250 | a672b469 | aliguori | sn = &sn_tab[i]; |
2251 | f9209915 | Miguel Di Ciurcio Filho | available = 1;
|
2252 | f9209915 | Miguel Di Ciurcio Filho | bs1 = NULL;
|
2253 | f9209915 | Miguel Di Ciurcio Filho | |
2254 | f9209915 | Miguel Di Ciurcio Filho | while ((bs1 = bdrv_next(bs1))) {
|
2255 | f9209915 | Miguel Di Ciurcio Filho | if (bdrv_can_snapshot(bs1) && bs1 != bs) {
|
2256 | f9209915 | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_find(bs1, sn_info, sn->id_str); |
2257 | f9209915 | Miguel Di Ciurcio Filho | if (ret < 0) { |
2258 | f9209915 | Miguel Di Ciurcio Filho | available = 0;
|
2259 | f9209915 | Miguel Di Ciurcio Filho | break;
|
2260 | f9209915 | Miguel Di Ciurcio Filho | } |
2261 | f9209915 | Miguel Di Ciurcio Filho | } |
2262 | f9209915 | Miguel Di Ciurcio Filho | } |
2263 | f9209915 | Miguel Di Ciurcio Filho | |
2264 | f9209915 | Miguel Di Ciurcio Filho | if (available) {
|
2265 | f9209915 | Miguel Di Ciurcio Filho | available_snapshots[total] = i; |
2266 | f9209915 | Miguel Di Ciurcio Filho | total++; |
2267 | f9209915 | Miguel Di Ciurcio Filho | } |
2268 | a672b469 | aliguori | } |
2269 | f9209915 | Miguel Di Ciurcio Filho | |
2270 | f9209915 | Miguel Di Ciurcio Filho | if (total > 0) { |
2271 | f9209915 | Miguel Di Ciurcio Filho | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); |
2272 | f9209915 | Miguel Di Ciurcio Filho | for (i = 0; i < total; i++) { |
2273 | f9209915 | Miguel Di Ciurcio Filho | sn = &sn_tab[available_snapshots[i]]; |
2274 | f9209915 | Miguel Di Ciurcio Filho | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
2275 | f9209915 | Miguel Di Ciurcio Filho | } |
2276 | f9209915 | Miguel Di Ciurcio Filho | } else {
|
2277 | f9209915 | Miguel Di Ciurcio Filho | monitor_printf(mon, "There is no suitable snapshot available\n");
|
2278 | f9209915 | Miguel Di Ciurcio Filho | } |
2279 | f9209915 | Miguel Di Ciurcio Filho | |
2280 | 7267c094 | Anthony Liguori | g_free(sn_tab); |
2281 | 7267c094 | Anthony Liguori | g_free(available_snapshots); |
2282 | f9209915 | Miguel Di Ciurcio Filho | |
2283 | a672b469 | aliguori | } |
2284 | c5705a77 | Avi Kivity | |
2285 | c5705a77 | Avi Kivity | void vmstate_register_ram(MemoryRegion *mr, DeviceState *dev)
|
2286 | c5705a77 | Avi Kivity | { |
2287 | 1ddde087 | Avi Kivity | qemu_ram_set_idstr(memory_region_get_ram_addr(mr) & TARGET_PAGE_MASK, |
2288 | c5705a77 | Avi Kivity | memory_region_name(mr), dev); |
2289 | c5705a77 | Avi Kivity | } |
2290 | c5705a77 | Avi Kivity | |
2291 | c5705a77 | Avi Kivity | void vmstate_unregister_ram(MemoryRegion *mr, DeviceState *dev)
|
2292 | c5705a77 | Avi Kivity | { |
2293 | c5705a77 | Avi Kivity | /* Nothing do to while the implementation is in RAMBlock */
|
2294 | c5705a77 | Avi Kivity | } |
2295 | c5705a77 | Avi Kivity | |
2296 | c5705a77 | Avi Kivity | void vmstate_register_ram_global(MemoryRegion *mr)
|
2297 | c5705a77 | Avi Kivity | { |
2298 | c5705a77 | Avi Kivity | vmstate_register_ram(mr, NULL);
|
2299 | c5705a77 | Avi Kivity | } |