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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 | |
25 | d40cdb10 | blueswir1 | #include "config-host.h" |
26 | 511d2b14 | blueswir1 | #include "qemu-common.h" |
27 | 511d2b14 | blueswir1 | #include "hw/hw.h" |
28 | 7685ee6a | Alex Williamson | #include "hw/qdev.h" |
29 | 1422e32d | Paolo Bonzini | #include "net/net.h" |
30 | 83c9089e | Paolo Bonzini | #include "monitor/monitor.h" |
31 | 9c17d615 | Paolo Bonzini | #include "sysemu/sysemu.h" |
32 | 1de7afc9 | Paolo Bonzini | #include "qemu/timer.h" |
33 | 511d2b14 | blueswir1 | #include "audio/audio.h" |
34 | caf71f86 | Paolo Bonzini | #include "migration/migration.h" |
35 | 1de7afc9 | Paolo Bonzini | #include "qemu/sockets.h" |
36 | 1de7afc9 | Paolo Bonzini | #include "qemu/queue.h" |
37 | 9c17d615 | Paolo Bonzini | #include "sysemu/cpus.h" |
38 | 022c62cb | Paolo Bonzini | #include "exec/memory.h" |
39 | a7ae8355 | Stefano Stabellini | #include "qmp-commands.h" |
40 | 517a13c9 | Juan Quintela | #include "trace.h" |
41 | 28085f7b | Orit Wasserman | #include "qemu/iov.h" |
42 | de08c606 | Wenchao Xia | #include "block/snapshot.h" |
43 | f364ec65 | Wenchao Xia | #include "block/qapi.h" |
44 | 511d2b14 | blueswir1 | |
45 | a672b469 | aliguori | #define SELF_ANNOUNCE_ROUNDS 5 |
46 | a672b469 | aliguori | |
47 | 18995b98 | Nolan | #ifndef ETH_P_RARP
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48 | f8778a77 | Stefan Berger | #define ETH_P_RARP 0x8035 |
49 | 18995b98 | Nolan | #endif
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50 | 18995b98 | Nolan | #define ARP_HTYPE_ETH 0x0001 |
51 | 18995b98 | Nolan | #define ARP_PTYPE_IP 0x0800 |
52 | 18995b98 | Nolan | #define ARP_OP_REQUEST_REV 0x3 |
53 | 18995b98 | Nolan | |
54 | 18995b98 | Nolan | static int announce_self_create(uint8_t *buf, |
55 | 5cecf414 | Eduardo Habkost | uint8_t *mac_addr) |
56 | a672b469 | aliguori | { |
57 | 18995b98 | Nolan | /* Ethernet header. */
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58 | 18995b98 | Nolan | memset(buf, 0xff, 6); /* destination MAC addr */ |
59 | 18995b98 | Nolan | memcpy(buf + 6, mac_addr, 6); /* source MAC addr */ |
60 | 18995b98 | Nolan | *(uint16_t *)(buf + 12) = htons(ETH_P_RARP); /* ethertype */ |
61 | 18995b98 | Nolan | |
62 | 18995b98 | Nolan | /* RARP header. */
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63 | 18995b98 | Nolan | *(uint16_t *)(buf + 14) = htons(ARP_HTYPE_ETH); /* hardware addr space */ |
64 | 18995b98 | Nolan | *(uint16_t *)(buf + 16) = htons(ARP_PTYPE_IP); /* protocol addr space */ |
65 | 18995b98 | Nolan | *(buf + 18) = 6; /* hardware addr length (ethernet) */ |
66 | 18995b98 | Nolan | *(buf + 19) = 4; /* protocol addr length (IPv4) */ |
67 | 18995b98 | Nolan | *(uint16_t *)(buf + 20) = htons(ARP_OP_REQUEST_REV); /* opcode */ |
68 | 18995b98 | Nolan | memcpy(buf + 22, mac_addr, 6); /* source hw addr */ |
69 | 18995b98 | Nolan | memset(buf + 28, 0x00, 4); /* source protocol addr */ |
70 | 18995b98 | Nolan | memcpy(buf + 32, mac_addr, 6); /* target hw addr */ |
71 | 18995b98 | Nolan | memset(buf + 38, 0x00, 4); /* target protocol addr */ |
72 | 18995b98 | Nolan | |
73 | 18995b98 | Nolan | /* Padding to get up to 60 bytes (ethernet min packet size, minus FCS). */
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74 | 18995b98 | Nolan | memset(buf + 42, 0x00, 18); |
75 | 18995b98 | Nolan | |
76 | 18995b98 | Nolan | return 60; /* len (FCS will be added by hardware) */ |
77 | a672b469 | aliguori | } |
78 | a672b469 | aliguori | |
79 | f401ca22 | Mark McLoughlin | static void qemu_announce_self_iter(NICState *nic, void *opaque) |
80 | a672b469 | aliguori | { |
81 | 18995b98 | Nolan | uint8_t buf[60];
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82 | f401ca22 | Mark McLoughlin | int len;
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83 | f401ca22 | Mark McLoughlin | |
84 | f401ca22 | Mark McLoughlin | len = announce_self_create(buf, nic->conf->macaddr.a); |
85 | f401ca22 | Mark McLoughlin | |
86 | b356f76d | Jason Wang | qemu_send_packet_raw(qemu_get_queue(nic), buf, len); |
87 | f401ca22 | Mark McLoughlin | } |
88 | f401ca22 | Mark McLoughlin | |
89 | f401ca22 | Mark McLoughlin | |
90 | f401ca22 | Mark McLoughlin | static void qemu_announce_self_once(void *opaque) |
91 | f401ca22 | Mark McLoughlin | { |
92 | ed8b330b | Gleb Natapov | static int count = SELF_ANNOUNCE_ROUNDS; |
93 | ed8b330b | Gleb Natapov | QEMUTimer *timer = *(QEMUTimer **)opaque; |
94 | a672b469 | aliguori | |
95 | f401ca22 | Mark McLoughlin | qemu_foreach_nic(qemu_announce_self_iter, NULL);
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96 | f401ca22 | Mark McLoughlin | |
97 | 18995b98 | Nolan | if (--count) {
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98 | 18995b98 | Nolan | /* delay 50ms, 150ms, 250ms, ... */
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99 | bc72ad67 | Alex Bligh | timer_mod(timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + |
100 | 18995b98 | Nolan | 50 + (SELF_ANNOUNCE_ROUNDS - count - 1) * 100); |
101 | ed8b330b | Gleb Natapov | } else {
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102 | 5cecf414 | Eduardo Habkost | timer_del(timer); |
103 | 5cecf414 | Eduardo Habkost | timer_free(timer); |
104 | ed8b330b | Gleb Natapov | } |
105 | ed8b330b | Gleb Natapov | } |
106 | ed8b330b | Gleb Natapov | |
107 | ed8b330b | Gleb Natapov | void qemu_announce_self(void) |
108 | ed8b330b | Gleb Natapov | { |
109 | 5cecf414 | Eduardo Habkost | static QEMUTimer *timer;
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110 | 5cecf414 | Eduardo Habkost | timer = timer_new_ms(QEMU_CLOCK_REALTIME, qemu_announce_self_once, &timer); |
111 | 5cecf414 | Eduardo Habkost | qemu_announce_self_once(&timer); |
112 | a672b469 | aliguori | } |
113 | a672b469 | aliguori | |
114 | a672b469 | aliguori | /***********************************************************/
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115 | a672b469 | aliguori | /* savevm/loadvm support */
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116 | a672b469 | aliguori | |
117 | 05fcc848 | Kevin Wolf | static ssize_t block_writev_buffer(void *opaque, struct iovec *iov, int iovcnt, |
118 | 05fcc848 | Kevin Wolf | int64_t pos) |
119 | 05fcc848 | Kevin Wolf | { |
120 | 05fcc848 | Kevin Wolf | int ret;
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121 | 05fcc848 | Kevin Wolf | QEMUIOVector qiov; |
122 | 05fcc848 | Kevin Wolf | |
123 | 05fcc848 | Kevin Wolf | qemu_iovec_init_external(&qiov, iov, iovcnt); |
124 | 05fcc848 | Kevin Wolf | ret = bdrv_writev_vmstate(opaque, &qiov, pos); |
125 | 05fcc848 | Kevin Wolf | if (ret < 0) { |
126 | 05fcc848 | Kevin Wolf | return ret;
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127 | 05fcc848 | Kevin Wolf | } |
128 | 05fcc848 | Kevin Wolf | |
129 | 05fcc848 | Kevin Wolf | return qiov.size;
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130 | 05fcc848 | Kevin Wolf | } |
131 | 05fcc848 | Kevin Wolf | |
132 | 178e08a5 | aliguori | static int block_put_buffer(void *opaque, const uint8_t *buf, |
133 | a672b469 | aliguori | int64_t pos, int size)
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134 | a672b469 | aliguori | { |
135 | 45566e9c | Christoph Hellwig | bdrv_save_vmstate(opaque, buf, pos, size); |
136 | a672b469 | aliguori | return size;
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137 | a672b469 | aliguori | } |
138 | a672b469 | aliguori | |
139 | 178e08a5 | aliguori | static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
140 | a672b469 | aliguori | { |
141 | 45566e9c | Christoph Hellwig | return bdrv_load_vmstate(opaque, buf, pos, size);
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142 | a672b469 | aliguori | } |
143 | a672b469 | aliguori | |
144 | a672b469 | aliguori | static int bdrv_fclose(void *opaque) |
145 | a672b469 | aliguori | { |
146 | ad492c92 | Paolo Bonzini | return bdrv_flush(opaque);
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147 | a672b469 | aliguori | } |
148 | a672b469 | aliguori | |
149 | 9229bf3c | Paolo Bonzini | static const QEMUFileOps bdrv_read_ops = { |
150 | 9229bf3c | Paolo Bonzini | .get_buffer = block_get_buffer, |
151 | 9229bf3c | Paolo Bonzini | .close = bdrv_fclose |
152 | 9229bf3c | Paolo Bonzini | }; |
153 | 9229bf3c | Paolo Bonzini | |
154 | 9229bf3c | Paolo Bonzini | static const QEMUFileOps bdrv_write_ops = { |
155 | 05fcc848 | Kevin Wolf | .put_buffer = block_put_buffer, |
156 | 05fcc848 | Kevin Wolf | .writev_buffer = block_writev_buffer, |
157 | 05fcc848 | Kevin Wolf | .close = bdrv_fclose |
158 | 9229bf3c | Paolo Bonzini | }; |
159 | 9229bf3c | Paolo Bonzini | |
160 | 45566e9c | Christoph Hellwig | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable) |
161 | a672b469 | aliguori | { |
162 | 38ff78d3 | Eduardo Habkost | if (is_writable) {
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163 | 9229bf3c | Paolo Bonzini | return qemu_fopen_ops(bs, &bdrv_write_ops);
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164 | 38ff78d3 | Eduardo Habkost | } |
165 | 9229bf3c | Paolo Bonzini | return qemu_fopen_ops(bs, &bdrv_read_ops);
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166 | a672b469 | aliguori | } |
167 | a672b469 | aliguori | |
168 | 2ff68d07 | Paolo Bonzini | |
169 | bb1a6d8c | Eduardo Habkost | /* QEMUFile timer support.
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170 | bb1a6d8c | Eduardo Habkost | * Not in qemu-file.c to not add qemu-timer.c as dependency to qemu-file.c
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171 | bb1a6d8c | Eduardo Habkost | */
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172 | 2ff68d07 | Paolo Bonzini | |
173 | 40daca54 | Alex Bligh | void timer_put(QEMUFile *f, QEMUTimer *ts)
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174 | 2ff68d07 | Paolo Bonzini | { |
175 | 2ff68d07 | Paolo Bonzini | uint64_t expire_time; |
176 | 2ff68d07 | Paolo Bonzini | |
177 | e93379b0 | Alex Bligh | expire_time = timer_expire_time_ns(ts); |
178 | 2ff68d07 | Paolo Bonzini | qemu_put_be64(f, expire_time); |
179 | 2ff68d07 | Paolo Bonzini | } |
180 | 2ff68d07 | Paolo Bonzini | |
181 | 40daca54 | Alex Bligh | void timer_get(QEMUFile *f, QEMUTimer *ts)
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182 | 2ff68d07 | Paolo Bonzini | { |
183 | 2ff68d07 | Paolo Bonzini | uint64_t expire_time; |
184 | 2ff68d07 | Paolo Bonzini | |
185 | 2ff68d07 | Paolo Bonzini | expire_time = qemu_get_be64(f); |
186 | 2ff68d07 | Paolo Bonzini | if (expire_time != -1) { |
187 | bc72ad67 | Alex Bligh | timer_mod_ns(ts, expire_time); |
188 | 2ff68d07 | Paolo Bonzini | } else {
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189 | bc72ad67 | Alex Bligh | timer_del(ts); |
190 | 2ff68d07 | Paolo Bonzini | } |
191 | 2ff68d07 | Paolo Bonzini | } |
192 | 2ff68d07 | Paolo Bonzini | |
193 | 2ff68d07 | Paolo Bonzini | |
194 | bb1a6d8c | Eduardo Habkost | /* VMState timer support.
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195 | bb1a6d8c | Eduardo Habkost | * Not in vmstate.c to not add qemu-timer.c as dependency to vmstate.c
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196 | bb1a6d8c | Eduardo Habkost | */
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197 | dde0463b | Juan Quintela | |
198 | dde0463b | Juan Quintela | static int get_timer(QEMUFile *f, void *pv, size_t size) |
199 | dde0463b | Juan Quintela | { |
200 | dde0463b | Juan Quintela | QEMUTimer *v = pv; |
201 | 40daca54 | Alex Bligh | timer_get(f, v); |
202 | dde0463b | Juan Quintela | return 0; |
203 | dde0463b | Juan Quintela | } |
204 | dde0463b | Juan Quintela | |
205 | 84e2e3eb | Juan Quintela | static void put_timer(QEMUFile *f, void *pv, size_t size) |
206 | dde0463b | Juan Quintela | { |
207 | 84e2e3eb | Juan Quintela | QEMUTimer *v = pv; |
208 | 40daca54 | Alex Bligh | timer_put(f, v); |
209 | dde0463b | Juan Quintela | } |
210 | dde0463b | Juan Quintela | |
211 | dde0463b | Juan Quintela | const VMStateInfo vmstate_info_timer = {
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212 | dde0463b | Juan Quintela | .name = "timer",
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213 | dde0463b | Juan Quintela | .get = get_timer, |
214 | dde0463b | Juan Quintela | .put = put_timer, |
215 | dde0463b | Juan Quintela | }; |
216 | dde0463b | Juan Quintela | |
217 | 08e99e29 | Peter Maydell | |
218 | 7685ee6a | Alex Williamson | typedef struct CompatEntry { |
219 | 7685ee6a | Alex Williamson | char idstr[256]; |
220 | 7685ee6a | Alex Williamson | int instance_id;
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221 | 7685ee6a | Alex Williamson | } CompatEntry; |
222 | 7685ee6a | Alex Williamson | |
223 | a672b469 | aliguori | typedef struct SaveStateEntry { |
224 | 72cf2d4f | Blue Swirl | QTAILQ_ENTRY(SaveStateEntry) entry; |
225 | a672b469 | aliguori | char idstr[256]; |
226 | a672b469 | aliguori | int instance_id;
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227 | 4d2ffa08 | Jan Kiszka | int alias_id;
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228 | a672b469 | aliguori | int version_id;
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229 | a672b469 | aliguori | int section_id;
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230 | 22ea40f4 | Juan Quintela | SaveVMHandlers *ops; |
231 | 9ed7d6ae | Juan Quintela | const VMStateDescription *vmsd;
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232 | a672b469 | aliguori | void *opaque;
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233 | 7685ee6a | Alex Williamson | CompatEntry *compat; |
234 | 24312968 | Cam Macdonell | int no_migrate;
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235 | a7ae8355 | Stefano Stabellini | int is_ram;
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236 | a672b469 | aliguori | } SaveStateEntry; |
237 | a672b469 | aliguori | |
238 | c163b5ca | lirans@il.ibm.com | |
239 | 72cf2d4f | Blue Swirl | static QTAILQ_HEAD(savevm_handlers, SaveStateEntry) savevm_handlers =
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240 | 72cf2d4f | Blue Swirl | QTAILQ_HEAD_INITIALIZER(savevm_handlers); |
241 | 9ed7d6ae | Juan Quintela | static int global_section_id; |
242 | a672b469 | aliguori | |
243 | 8718e999 | Juan Quintela | static int calculate_new_instance_id(const char *idstr) |
244 | 8718e999 | Juan Quintela | { |
245 | 8718e999 | Juan Quintela | SaveStateEntry *se; |
246 | 8718e999 | Juan Quintela | int instance_id = 0; |
247 | 8718e999 | Juan Quintela | |
248 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
249 | 8718e999 | Juan Quintela | if (strcmp(idstr, se->idstr) == 0 |
250 | 8718e999 | Juan Quintela | && instance_id <= se->instance_id) { |
251 | 8718e999 | Juan Quintela | instance_id = se->instance_id + 1;
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252 | 8718e999 | Juan Quintela | } |
253 | 8718e999 | Juan Quintela | } |
254 | 8718e999 | Juan Quintela | return instance_id;
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255 | 8718e999 | Juan Quintela | } |
256 | 8718e999 | Juan Quintela | |
257 | 7685ee6a | Alex Williamson | static int calculate_compat_instance_id(const char *idstr) |
258 | 7685ee6a | Alex Williamson | { |
259 | 7685ee6a | Alex Williamson | SaveStateEntry *se; |
260 | 7685ee6a | Alex Williamson | int instance_id = 0; |
261 | 7685ee6a | Alex Williamson | |
262 | 7685ee6a | Alex Williamson | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
263 | 38ff78d3 | Eduardo Habkost | if (!se->compat) {
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264 | 7685ee6a | Alex Williamson | continue;
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265 | 38ff78d3 | Eduardo Habkost | } |
266 | 7685ee6a | Alex Williamson | |
267 | 7685ee6a | Alex Williamson | if (strcmp(idstr, se->compat->idstr) == 0 |
268 | 7685ee6a | Alex Williamson | && instance_id <= se->compat->instance_id) { |
269 | 7685ee6a | Alex Williamson | instance_id = se->compat->instance_id + 1;
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270 | 7685ee6a | Alex Williamson | } |
271 | 7685ee6a | Alex Williamson | } |
272 | 7685ee6a | Alex Williamson | return instance_id;
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273 | 7685ee6a | Alex Williamson | } |
274 | 7685ee6a | Alex Williamson | |
275 | a672b469 | aliguori | /* TODO: Individual devices generally have very little idea about the rest
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276 | a672b469 | aliguori | of the system, so instance_id should be removed/replaced.
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277 | a672b469 | aliguori | Meanwhile pass -1 as instance_id if you do not already have a clearly
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278 | a672b469 | aliguori | distinguishing id for all instances of your device class. */
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279 | 0be71e32 | Alex Williamson | int register_savevm_live(DeviceState *dev,
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280 | 0be71e32 | Alex Williamson | const char *idstr, |
281 | a672b469 | aliguori | int instance_id,
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282 | a672b469 | aliguori | int version_id,
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283 | 7908c78d | Juan Quintela | SaveVMHandlers *ops, |
284 | a672b469 | aliguori | void *opaque)
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285 | a672b469 | aliguori | { |
286 | 8718e999 | Juan Quintela | SaveStateEntry *se; |
287 | a672b469 | aliguori | |
288 | 7267c094 | Anthony Liguori | se = g_malloc0(sizeof(SaveStateEntry));
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289 | a672b469 | aliguori | se->version_id = version_id; |
290 | a672b469 | aliguori | se->section_id = global_section_id++; |
291 | 7908c78d | Juan Quintela | se->ops = ops; |
292 | a672b469 | aliguori | se->opaque = opaque; |
293 | 9ed7d6ae | Juan Quintela | se->vmsd = NULL;
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294 | 24312968 | Cam Macdonell | se->no_migrate = 0;
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295 | a7ae8355 | Stefano Stabellini | /* if this is a live_savem then set is_ram */
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296 | 16310a3c | Juan Quintela | if (ops->save_live_setup != NULL) { |
297 | a7ae8355 | Stefano Stabellini | se->is_ram = 1;
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298 | a7ae8355 | Stefano Stabellini | } |
299 | a672b469 | aliguori | |
300 | 09e5ab63 | Anthony Liguori | if (dev) {
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301 | 09e5ab63 | Anthony Liguori | char *id = qdev_get_dev_path(dev);
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302 | 7685ee6a | Alex Williamson | if (id) {
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303 | 7685ee6a | Alex Williamson | pstrcpy(se->idstr, sizeof(se->idstr), id);
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304 | 7685ee6a | Alex Williamson | pstrcat(se->idstr, sizeof(se->idstr), "/"); |
305 | 7267c094 | Anthony Liguori | g_free(id); |
306 | 7685ee6a | Alex Williamson | |
307 | 7267c094 | Anthony Liguori | se->compat = g_malloc0(sizeof(CompatEntry));
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308 | 7685ee6a | Alex Williamson | pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), idstr);
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309 | 7685ee6a | Alex Williamson | se->compat->instance_id = instance_id == -1 ?
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310 | 7685ee6a | Alex Williamson | calculate_compat_instance_id(idstr) : instance_id; |
311 | 7685ee6a | Alex Williamson | instance_id = -1;
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312 | 7685ee6a | Alex Williamson | } |
313 | 7685ee6a | Alex Williamson | } |
314 | 7685ee6a | Alex Williamson | pstrcat(se->idstr, sizeof(se->idstr), idstr);
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315 | 7685ee6a | Alex Williamson | |
316 | 8718e999 | Juan Quintela | if (instance_id == -1) { |
317 | 7685ee6a | Alex Williamson | se->instance_id = calculate_new_instance_id(se->idstr); |
318 | 8718e999 | Juan Quintela | } else {
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319 | 8718e999 | Juan Quintela | se->instance_id = instance_id; |
320 | a672b469 | aliguori | } |
321 | 7685ee6a | Alex Williamson | assert(!se->compat || se->instance_id == 0);
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322 | 8718e999 | Juan Quintela | /* add at the end of list */
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323 | 72cf2d4f | Blue Swirl | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
324 | a672b469 | aliguori | return 0; |
325 | a672b469 | aliguori | } |
326 | a672b469 | aliguori | |
327 | 0be71e32 | Alex Williamson | int register_savevm(DeviceState *dev,
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328 | 0be71e32 | Alex Williamson | const char *idstr, |
329 | a672b469 | aliguori | int instance_id,
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330 | a672b469 | aliguori | int version_id,
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331 | a672b469 | aliguori | SaveStateHandler *save_state, |
332 | a672b469 | aliguori | LoadStateHandler *load_state, |
333 | a672b469 | aliguori | void *opaque)
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334 | a672b469 | aliguori | { |
335 | 7908c78d | Juan Quintela | SaveVMHandlers *ops = g_malloc0(sizeof(SaveVMHandlers));
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336 | 7908c78d | Juan Quintela | ops->save_state = save_state; |
337 | 7908c78d | Juan Quintela | ops->load_state = load_state; |
338 | 0be71e32 | Alex Williamson | return register_savevm_live(dev, idstr, instance_id, version_id,
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339 | 7908c78d | Juan Quintela | ops, opaque); |
340 | a672b469 | aliguori | } |
341 | a672b469 | aliguori | |
342 | 0be71e32 | Alex Williamson | void unregister_savevm(DeviceState *dev, const char *idstr, void *opaque) |
343 | 41bd13af | aliguori | { |
344 | 8718e999 | Juan Quintela | SaveStateEntry *se, *new_se; |
345 | 7685ee6a | Alex Williamson | char id[256] = ""; |
346 | 7685ee6a | Alex Williamson | |
347 | 09e5ab63 | Anthony Liguori | if (dev) {
|
348 | 09e5ab63 | Anthony Liguori | char *path = qdev_get_dev_path(dev);
|
349 | 7685ee6a | Alex Williamson | if (path) {
|
350 | 7685ee6a | Alex Williamson | pstrcpy(id, sizeof(id), path);
|
351 | 7685ee6a | Alex Williamson | pstrcat(id, sizeof(id), "/"); |
352 | 7267c094 | Anthony Liguori | g_free(path); |
353 | 7685ee6a | Alex Williamson | } |
354 | 7685ee6a | Alex Williamson | } |
355 | 7685ee6a | Alex Williamson | pstrcat(id, sizeof(id), idstr);
|
356 | 41bd13af | aliguori | |
357 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
358 | 7685ee6a | Alex Williamson | if (strcmp(se->idstr, id) == 0 && se->opaque == opaque) { |
359 | 72cf2d4f | Blue Swirl | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
360 | 69e58af9 | Alex Williamson | if (se->compat) {
|
361 | 7267c094 | Anthony Liguori | g_free(se->compat); |
362 | 69e58af9 | Alex Williamson | } |
363 | 22ea40f4 | Juan Quintela | g_free(se->ops); |
364 | 7267c094 | Anthony Liguori | g_free(se); |
365 | 41bd13af | aliguori | } |
366 | 41bd13af | aliguori | } |
367 | 41bd13af | aliguori | } |
368 | 41bd13af | aliguori | |
369 | 0be71e32 | Alex Williamson | int vmstate_register_with_alias_id(DeviceState *dev, int instance_id, |
370 | 4d2ffa08 | Jan Kiszka | const VMStateDescription *vmsd,
|
371 | 4d2ffa08 | Jan Kiszka | void *opaque, int alias_id, |
372 | 4d2ffa08 | Jan Kiszka | int required_for_version)
|
373 | 9ed7d6ae | Juan Quintela | { |
374 | 8718e999 | Juan Quintela | SaveStateEntry *se; |
375 | 9ed7d6ae | Juan Quintela | |
376 | 4d2ffa08 | Jan Kiszka | /* If this triggers, alias support can be dropped for the vmsd. */
|
377 | 4d2ffa08 | Jan Kiszka | assert(alias_id == -1 || required_for_version >= vmsd->minimum_version_id);
|
378 | 4d2ffa08 | Jan Kiszka | |
379 | 7267c094 | Anthony Liguori | se = g_malloc0(sizeof(SaveStateEntry));
|
380 | 9ed7d6ae | Juan Quintela | se->version_id = vmsd->version_id; |
381 | 9ed7d6ae | Juan Quintela | se->section_id = global_section_id++; |
382 | 9ed7d6ae | Juan Quintela | se->opaque = opaque; |
383 | 9ed7d6ae | Juan Quintela | se->vmsd = vmsd; |
384 | 4d2ffa08 | Jan Kiszka | se->alias_id = alias_id; |
385 | 2837c8ea | Gerd Hoffmann | se->no_migrate = vmsd->unmigratable; |
386 | 9ed7d6ae | Juan Quintela | |
387 | 09e5ab63 | Anthony Liguori | if (dev) {
|
388 | 09e5ab63 | Anthony Liguori | char *id = qdev_get_dev_path(dev);
|
389 | 7685ee6a | Alex Williamson | if (id) {
|
390 | 7685ee6a | Alex Williamson | pstrcpy(se->idstr, sizeof(se->idstr), id);
|
391 | 7685ee6a | Alex Williamson | pstrcat(se->idstr, sizeof(se->idstr), "/"); |
392 | 7267c094 | Anthony Liguori | g_free(id); |
393 | 7685ee6a | Alex Williamson | |
394 | 7267c094 | Anthony Liguori | se->compat = g_malloc0(sizeof(CompatEntry));
|
395 | 7685ee6a | Alex Williamson | pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), vmsd->name);
|
396 | 7685ee6a | Alex Williamson | se->compat->instance_id = instance_id == -1 ?
|
397 | 7685ee6a | Alex Williamson | calculate_compat_instance_id(vmsd->name) : instance_id; |
398 | 7685ee6a | Alex Williamson | instance_id = -1;
|
399 | 7685ee6a | Alex Williamson | } |
400 | 7685ee6a | Alex Williamson | } |
401 | 7685ee6a | Alex Williamson | pstrcat(se->idstr, sizeof(se->idstr), vmsd->name);
|
402 | 7685ee6a | Alex Williamson | |
403 | 8718e999 | Juan Quintela | if (instance_id == -1) { |
404 | 7685ee6a | Alex Williamson | se->instance_id = calculate_new_instance_id(se->idstr); |
405 | 8718e999 | Juan Quintela | } else {
|
406 | 8718e999 | Juan Quintela | se->instance_id = instance_id; |
407 | 9ed7d6ae | Juan Quintela | } |
408 | 7685ee6a | Alex Williamson | assert(!se->compat || se->instance_id == 0);
|
409 | 8718e999 | Juan Quintela | /* add at the end of list */
|
410 | 72cf2d4f | Blue Swirl | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
411 | 9ed7d6ae | Juan Quintela | return 0; |
412 | 9ed7d6ae | Juan Quintela | } |
413 | 9ed7d6ae | Juan Quintela | |
414 | 0be71e32 | Alex Williamson | void vmstate_unregister(DeviceState *dev, const VMStateDescription *vmsd, |
415 | 0be71e32 | Alex Williamson | void *opaque)
|
416 | 9ed7d6ae | Juan Quintela | { |
417 | 1eb7538b | Juan Quintela | SaveStateEntry *se, *new_se; |
418 | 1eb7538b | Juan Quintela | |
419 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
420 | 1eb7538b | Juan Quintela | if (se->vmsd == vmsd && se->opaque == opaque) {
|
421 | 72cf2d4f | Blue Swirl | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
422 | 69e58af9 | Alex Williamson | if (se->compat) {
|
423 | 7267c094 | Anthony Liguori | g_free(se->compat); |
424 | 69e58af9 | Alex Williamson | } |
425 | 7267c094 | Anthony Liguori | g_free(se); |
426 | 1eb7538b | Juan Quintela | } |
427 | 1eb7538b | Juan Quintela | } |
428 | 9ed7d6ae | Juan Quintela | } |
429 | 9ed7d6ae | Juan Quintela | |
430 | 4082be4d | Juan Quintela | static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id) |
431 | 4082be4d | Juan Quintela | { |
432 | 9ed7d6ae | Juan Quintela | if (!se->vmsd) { /* Old style */ |
433 | 22ea40f4 | Juan Quintela | return se->ops->load_state(f, se->opaque, version_id);
|
434 | 9ed7d6ae | Juan Quintela | } |
435 | 9ed7d6ae | Juan Quintela | return vmstate_load_state(f, se->vmsd, se->opaque, version_id);
|
436 | 4082be4d | Juan Quintela | } |
437 | 4082be4d | Juan Quintela | |
438 | dc912121 | Alex Williamson | static void vmstate_save(QEMUFile *f, SaveStateEntry *se) |
439 | 4082be4d | Juan Quintela | { |
440 | 9ed7d6ae | Juan Quintela | if (!se->vmsd) { /* Old style */ |
441 | 22ea40f4 | Juan Quintela | se->ops->save_state(f, se->opaque); |
442 | dc912121 | Alex Williamson | return;
|
443 | 9ed7d6ae | Juan Quintela | } |
444 | 38ff78d3 | Eduardo Habkost | vmstate_save_state(f, se->vmsd, se->opaque); |
445 | 4082be4d | Juan Quintela | } |
446 | 4082be4d | Juan Quintela | |
447 | e1c37d0e | Luiz Capitulino | bool qemu_savevm_state_blocked(Error **errp)
|
448 | dc912121 | Alex Williamson | { |
449 | dc912121 | Alex Williamson | SaveStateEntry *se; |
450 | dc912121 | Alex Williamson | |
451 | dc912121 | Alex Williamson | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
452 | dc912121 | Alex Williamson | if (se->no_migrate) {
|
453 | e1c37d0e | Luiz Capitulino | error_set(errp, QERR_MIGRATION_NOT_SUPPORTED, se->idstr); |
454 | dc912121 | Alex Williamson | return true; |
455 | dc912121 | Alex Williamson | } |
456 | dc912121 | Alex Williamson | } |
457 | dc912121 | Alex Williamson | return false; |
458 | dc912121 | Alex Williamson | } |
459 | dc912121 | Alex Williamson | |
460 | 47c8c17a | Paolo Bonzini | void qemu_savevm_state_begin(QEMUFile *f,
|
461 | 47c8c17a | Paolo Bonzini | const MigrationParams *params)
|
462 | a672b469 | aliguori | { |
463 | a672b469 | aliguori | SaveStateEntry *se; |
464 | 39346385 | Juan Quintela | int ret;
|
465 | a672b469 | aliguori | |
466 | c163b5ca | lirans@il.ibm.com | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
467 | 22ea40f4 | Juan Quintela | if (!se->ops || !se->ops->set_params) {
|
468 | c163b5ca | lirans@il.ibm.com | continue;
|
469 | 6607ae23 | Isaku Yamahata | } |
470 | 22ea40f4 | Juan Quintela | se->ops->set_params(params, se->opaque); |
471 | c163b5ca | lirans@il.ibm.com | } |
472 | 38ff78d3 | Eduardo Habkost | |
473 | a672b469 | aliguori | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); |
474 | a672b469 | aliguori | qemu_put_be32(f, QEMU_VM_FILE_VERSION); |
475 | a672b469 | aliguori | |
476 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
477 | a672b469 | aliguori | int len;
|
478 | a672b469 | aliguori | |
479 | d1315aac | Juan Quintela | if (!se->ops || !se->ops->save_live_setup) {
|
480 | a672b469 | aliguori | continue;
|
481 | 22ea40f4 | Juan Quintela | } |
482 | 6bd68781 | Juan Quintela | if (se->ops && se->ops->is_active) {
|
483 | 6bd68781 | Juan Quintela | if (!se->ops->is_active(se->opaque)) {
|
484 | 6bd68781 | Juan Quintela | continue;
|
485 | 6bd68781 | Juan Quintela | } |
486 | 6bd68781 | Juan Quintela | } |
487 | a672b469 | aliguori | /* Section type */
|
488 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_START); |
489 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
490 | a672b469 | aliguori | |
491 | a672b469 | aliguori | /* ID string */
|
492 | a672b469 | aliguori | len = strlen(se->idstr); |
493 | a672b469 | aliguori | qemu_put_byte(f, len); |
494 | a672b469 | aliguori | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
495 | a672b469 | aliguori | |
496 | a672b469 | aliguori | qemu_put_be32(f, se->instance_id); |
497 | a672b469 | aliguori | qemu_put_be32(f, se->version_id); |
498 | a672b469 | aliguori | |
499 | d1315aac | Juan Quintela | ret = se->ops->save_live_setup(f, se->opaque); |
500 | 2975725f | Juan Quintela | if (ret < 0) { |
501 | 47c8c17a | Paolo Bonzini | qemu_file_set_error(f, ret); |
502 | 47c8c17a | Paolo Bonzini | break;
|
503 | 2975725f | Juan Quintela | } |
504 | a672b469 | aliguori | } |
505 | a672b469 | aliguori | } |
506 | a672b469 | aliguori | |
507 | 39346385 | Juan Quintela | /*
|
508 | 07f35073 | Dong Xu Wang | * this function has three return values:
|
509 | 39346385 | Juan Quintela | * negative: there was one error, and we have -errno.
|
510 | 39346385 | Juan Quintela | * 0 : We haven't finished, caller have to go again
|
511 | 39346385 | Juan Quintela | * 1 : We have finished, we can go to complete phase
|
512 | 39346385 | Juan Quintela | */
|
513 | 539de124 | Luiz Capitulino | int qemu_savevm_state_iterate(QEMUFile *f)
|
514 | a672b469 | aliguori | { |
515 | a672b469 | aliguori | SaveStateEntry *se; |
516 | a672b469 | aliguori | int ret = 1; |
517 | a672b469 | aliguori | |
518 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
519 | 16310a3c | Juan Quintela | if (!se->ops || !se->ops->save_live_iterate) {
|
520 | a672b469 | aliguori | continue;
|
521 | 22ea40f4 | Juan Quintela | } |
522 | 6bd68781 | Juan Quintela | if (se->ops && se->ops->is_active) {
|
523 | 6bd68781 | Juan Quintela | if (!se->ops->is_active(se->opaque)) {
|
524 | 6bd68781 | Juan Quintela | continue;
|
525 | 6bd68781 | Juan Quintela | } |
526 | 6bd68781 | Juan Quintela | } |
527 | aac844ed | Juan Quintela | if (qemu_file_rate_limit(f)) {
|
528 | aac844ed | Juan Quintela | return 0; |
529 | aac844ed | Juan Quintela | } |
530 | 517a13c9 | Juan Quintela | trace_savevm_section_start(); |
531 | a672b469 | aliguori | /* Section type */
|
532 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_PART); |
533 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
534 | a672b469 | aliguori | |
535 | 16310a3c | Juan Quintela | ret = se->ops->save_live_iterate(f, se->opaque); |
536 | 517a13c9 | Juan Quintela | trace_savevm_section_end(se->section_id); |
537 | 517a13c9 | Juan Quintela | |
538 | 47c8c17a | Paolo Bonzini | if (ret < 0) { |
539 | 47c8c17a | Paolo Bonzini | qemu_file_set_error(f, ret); |
540 | 47c8c17a | Paolo Bonzini | } |
541 | 2975725f | Juan Quintela | if (ret <= 0) { |
542 | 90697be8 | Jan Kiszka | /* Do not proceed to the next vmstate before this one reported
|
543 | 90697be8 | Jan Kiszka | completion of the current stage. This serializes the migration
|
544 | 90697be8 | Jan Kiszka | and reduces the probability that a faster changing state is
|
545 | 90697be8 | Jan Kiszka | synchronized over and over again. */
|
546 | 90697be8 | Jan Kiszka | break;
|
547 | 90697be8 | Jan Kiszka | } |
548 | a672b469 | aliguori | } |
549 | 39346385 | Juan Quintela | return ret;
|
550 | a672b469 | aliguori | } |
551 | a672b469 | aliguori | |
552 | 47c8c17a | Paolo Bonzini | void qemu_savevm_state_complete(QEMUFile *f)
|
553 | a672b469 | aliguori | { |
554 | a672b469 | aliguori | SaveStateEntry *se; |
555 | 2975725f | Juan Quintela | int ret;
|
556 | a672b469 | aliguori | |
557 | ea375f9a | Jan Kiszka | cpu_synchronize_all_states(); |
558 | ea375f9a | Jan Kiszka | |
559 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
560 | 16310a3c | Juan Quintela | if (!se->ops || !se->ops->save_live_complete) {
|
561 | a672b469 | aliguori | continue;
|
562 | 22ea40f4 | Juan Quintela | } |
563 | 6bd68781 | Juan Quintela | if (se->ops && se->ops->is_active) {
|
564 | 6bd68781 | Juan Quintela | if (!se->ops->is_active(se->opaque)) {
|
565 | 6bd68781 | Juan Quintela | continue;
|
566 | 6bd68781 | Juan Quintela | } |
567 | 6bd68781 | Juan Quintela | } |
568 | 517a13c9 | Juan Quintela | trace_savevm_section_start(); |
569 | a672b469 | aliguori | /* Section type */
|
570 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_END); |
571 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
572 | a672b469 | aliguori | |
573 | 16310a3c | Juan Quintela | ret = se->ops->save_live_complete(f, se->opaque); |
574 | 517a13c9 | Juan Quintela | trace_savevm_section_end(se->section_id); |
575 | 2975725f | Juan Quintela | if (ret < 0) { |
576 | 47c8c17a | Paolo Bonzini | qemu_file_set_error(f, ret); |
577 | 47c8c17a | Paolo Bonzini | return;
|
578 | 2975725f | Juan Quintela | } |
579 | a672b469 | aliguori | } |
580 | a672b469 | aliguori | |
581 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
582 | a672b469 | aliguori | int len;
|
583 | a672b469 | aliguori | |
584 | 22ea40f4 | Juan Quintela | if ((!se->ops || !se->ops->save_state) && !se->vmsd) {
|
585 | 5cecf414 | Eduardo Habkost | continue;
|
586 | 22ea40f4 | Juan Quintela | } |
587 | 517a13c9 | Juan Quintela | trace_savevm_section_start(); |
588 | a672b469 | aliguori | /* Section type */
|
589 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_FULL); |
590 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
591 | a672b469 | aliguori | |
592 | a672b469 | aliguori | /* ID string */
|
593 | a672b469 | aliguori | len = strlen(se->idstr); |
594 | a672b469 | aliguori | qemu_put_byte(f, len); |
595 | a672b469 | aliguori | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
596 | a672b469 | aliguori | |
597 | a672b469 | aliguori | qemu_put_be32(f, se->instance_id); |
598 | a672b469 | aliguori | qemu_put_be32(f, se->version_id); |
599 | a672b469 | aliguori | |
600 | dc912121 | Alex Williamson | vmstate_save(f, se); |
601 | 517a13c9 | Juan Quintela | trace_savevm_section_end(se->section_id); |
602 | a672b469 | aliguori | } |
603 | a672b469 | aliguori | |
604 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_EOF); |
605 | edaae611 | Paolo Bonzini | qemu_fflush(f); |
606 | a672b469 | aliguori | } |
607 | a672b469 | aliguori | |
608 | e4ed1541 | Juan Quintela | uint64_t qemu_savevm_state_pending(QEMUFile *f, uint64_t max_size) |
609 | e4ed1541 | Juan Quintela | { |
610 | e4ed1541 | Juan Quintela | SaveStateEntry *se; |
611 | e4ed1541 | Juan Quintela | uint64_t ret = 0;
|
612 | e4ed1541 | Juan Quintela | |
613 | e4ed1541 | Juan Quintela | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
614 | e4ed1541 | Juan Quintela | if (!se->ops || !se->ops->save_live_pending) {
|
615 | e4ed1541 | Juan Quintela | continue;
|
616 | e4ed1541 | Juan Quintela | } |
617 | e4ed1541 | Juan Quintela | if (se->ops && se->ops->is_active) {
|
618 | e4ed1541 | Juan Quintela | if (!se->ops->is_active(se->opaque)) {
|
619 | e4ed1541 | Juan Quintela | continue;
|
620 | e4ed1541 | Juan Quintela | } |
621 | e4ed1541 | Juan Quintela | } |
622 | e4ed1541 | Juan Quintela | ret += se->ops->save_live_pending(f, se->opaque, max_size); |
623 | e4ed1541 | Juan Quintela | } |
624 | e4ed1541 | Juan Quintela | return ret;
|
625 | e4ed1541 | Juan Quintela | } |
626 | e4ed1541 | Juan Quintela | |
627 | 6522773f | Juan Quintela | void qemu_savevm_state_cancel(void) |
628 | 4ec7fcc7 | Jan Kiszka | { |
629 | 4ec7fcc7 | Jan Kiszka | SaveStateEntry *se; |
630 | 4ec7fcc7 | Jan Kiszka | |
631 | 4ec7fcc7 | Jan Kiszka | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
632 | 9b5bfab0 | Juan Quintela | if (se->ops && se->ops->cancel) {
|
633 | 9b5bfab0 | Juan Quintela | se->ops->cancel(se->opaque); |
634 | 4ec7fcc7 | Jan Kiszka | } |
635 | 4ec7fcc7 | Jan Kiszka | } |
636 | 4ec7fcc7 | Jan Kiszka | } |
637 | 4ec7fcc7 | Jan Kiszka | |
638 | e1c37d0e | Luiz Capitulino | static int qemu_savevm_state(QEMUFile *f) |
639 | a672b469 | aliguori | { |
640 | a672b469 | aliguori | int ret;
|
641 | 6607ae23 | Isaku Yamahata | MigrationParams params = { |
642 | 6607ae23 | Isaku Yamahata | .blk = 0,
|
643 | 6607ae23 | Isaku Yamahata | .shared = 0
|
644 | 6607ae23 | Isaku Yamahata | }; |
645 | a672b469 | aliguori | |
646 | e1c37d0e | Luiz Capitulino | if (qemu_savevm_state_blocked(NULL)) { |
647 | 04943eba | Paolo Bonzini | return -EINVAL;
|
648 | dc912121 | Alex Williamson | } |
649 | dc912121 | Alex Williamson | |
650 | 9b095037 | Paolo Bonzini | qemu_mutex_unlock_iothread(); |
651 | 47c8c17a | Paolo Bonzini | qemu_savevm_state_begin(f, ¶ms); |
652 | 9b095037 | Paolo Bonzini | qemu_mutex_lock_iothread(); |
653 | 9b095037 | Paolo Bonzini | |
654 | 47c8c17a | Paolo Bonzini | while (qemu_file_get_error(f) == 0) { |
655 | 47c8c17a | Paolo Bonzini | if (qemu_savevm_state_iterate(f) > 0) { |
656 | 47c8c17a | Paolo Bonzini | break;
|
657 | 47c8c17a | Paolo Bonzini | } |
658 | 47c8c17a | Paolo Bonzini | } |
659 | a672b469 | aliguori | |
660 | 47c8c17a | Paolo Bonzini | ret = qemu_file_get_error(f); |
661 | 39346385 | Juan Quintela | if (ret == 0) { |
662 | 47c8c17a | Paolo Bonzini | qemu_savevm_state_complete(f); |
663 | 624b9cc2 | Juan Quintela | ret = qemu_file_get_error(f); |
664 | 39346385 | Juan Quintela | } |
665 | 04943eba | Paolo Bonzini | if (ret != 0) { |
666 | 04943eba | Paolo Bonzini | qemu_savevm_state_cancel(); |
667 | 04943eba | Paolo Bonzini | } |
668 | a672b469 | aliguori | return ret;
|
669 | a672b469 | aliguori | } |
670 | a672b469 | aliguori | |
671 | a7ae8355 | Stefano Stabellini | static int qemu_save_device_state(QEMUFile *f) |
672 | a7ae8355 | Stefano Stabellini | { |
673 | a7ae8355 | Stefano Stabellini | SaveStateEntry *se; |
674 | a7ae8355 | Stefano Stabellini | |
675 | a7ae8355 | Stefano Stabellini | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); |
676 | a7ae8355 | Stefano Stabellini | qemu_put_be32(f, QEMU_VM_FILE_VERSION); |
677 | a7ae8355 | Stefano Stabellini | |
678 | a7ae8355 | Stefano Stabellini | cpu_synchronize_all_states(); |
679 | a7ae8355 | Stefano Stabellini | |
680 | a7ae8355 | Stefano Stabellini | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
681 | a7ae8355 | Stefano Stabellini | int len;
|
682 | a7ae8355 | Stefano Stabellini | |
683 | a7ae8355 | Stefano Stabellini | if (se->is_ram) {
|
684 | a7ae8355 | Stefano Stabellini | continue;
|
685 | a7ae8355 | Stefano Stabellini | } |
686 | 22ea40f4 | Juan Quintela | if ((!se->ops || !se->ops->save_state) && !se->vmsd) {
|
687 | a7ae8355 | Stefano Stabellini | continue;
|
688 | a7ae8355 | Stefano Stabellini | } |
689 | a7ae8355 | Stefano Stabellini | |
690 | a7ae8355 | Stefano Stabellini | /* Section type */
|
691 | a7ae8355 | Stefano Stabellini | qemu_put_byte(f, QEMU_VM_SECTION_FULL); |
692 | a7ae8355 | Stefano Stabellini | qemu_put_be32(f, se->section_id); |
693 | a7ae8355 | Stefano Stabellini | |
694 | a7ae8355 | Stefano Stabellini | /* ID string */
|
695 | a7ae8355 | Stefano Stabellini | len = strlen(se->idstr); |
696 | a7ae8355 | Stefano Stabellini | qemu_put_byte(f, len); |
697 | a7ae8355 | Stefano Stabellini | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
698 | a7ae8355 | Stefano Stabellini | |
699 | a7ae8355 | Stefano Stabellini | qemu_put_be32(f, se->instance_id); |
700 | a7ae8355 | Stefano Stabellini | qemu_put_be32(f, se->version_id); |
701 | a7ae8355 | Stefano Stabellini | |
702 | a7ae8355 | Stefano Stabellini | vmstate_save(f, se); |
703 | a7ae8355 | Stefano Stabellini | } |
704 | a7ae8355 | Stefano Stabellini | |
705 | a7ae8355 | Stefano Stabellini | qemu_put_byte(f, QEMU_VM_EOF); |
706 | a7ae8355 | Stefano Stabellini | |
707 | a7ae8355 | Stefano Stabellini | return qemu_file_get_error(f);
|
708 | a7ae8355 | Stefano Stabellini | } |
709 | a7ae8355 | Stefano Stabellini | |
710 | a672b469 | aliguori | static SaveStateEntry *find_se(const char *idstr, int instance_id) |
711 | a672b469 | aliguori | { |
712 | a672b469 | aliguori | SaveStateEntry *se; |
713 | a672b469 | aliguori | |
714 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
715 | a672b469 | aliguori | if (!strcmp(se->idstr, idstr) &&
|
716 | 4d2ffa08 | Jan Kiszka | (instance_id == se->instance_id || |
717 | 4d2ffa08 | Jan Kiszka | instance_id == se->alias_id)) |
718 | a672b469 | aliguori | return se;
|
719 | 7685ee6a | Alex Williamson | /* Migrating from an older version? */
|
720 | 7685ee6a | Alex Williamson | if (strstr(se->idstr, idstr) && se->compat) {
|
721 | 7685ee6a | Alex Williamson | if (!strcmp(se->compat->idstr, idstr) &&
|
722 | 7685ee6a | Alex Williamson | (instance_id == se->compat->instance_id || |
723 | 7685ee6a | Alex Williamson | instance_id == se->alias_id)) |
724 | 7685ee6a | Alex Williamson | return se;
|
725 | 7685ee6a | Alex Williamson | } |
726 | a672b469 | aliguori | } |
727 | a672b469 | aliguori | return NULL; |
728 | a672b469 | aliguori | } |
729 | a672b469 | aliguori | |
730 | a672b469 | aliguori | typedef struct LoadStateEntry { |
731 | 72cf2d4f | Blue Swirl | QLIST_ENTRY(LoadStateEntry) entry; |
732 | a672b469 | aliguori | SaveStateEntry *se; |
733 | a672b469 | aliguori | int section_id;
|
734 | a672b469 | aliguori | int version_id;
|
735 | a672b469 | aliguori | } LoadStateEntry; |
736 | a672b469 | aliguori | |
737 | a672b469 | aliguori | int qemu_loadvm_state(QEMUFile *f)
|
738 | a672b469 | aliguori | { |
739 | 72cf2d4f | Blue Swirl | QLIST_HEAD(, LoadStateEntry) loadvm_handlers = |
740 | 72cf2d4f | Blue Swirl | QLIST_HEAD_INITIALIZER(loadvm_handlers); |
741 | f4dbb8dd | Juan Quintela | LoadStateEntry *le, *new_le; |
742 | a672b469 | aliguori | uint8_t section_type; |
743 | a672b469 | aliguori | unsigned int v; |
744 | a672b469 | aliguori | int ret;
|
745 | a672b469 | aliguori | |
746 | e1c37d0e | Luiz Capitulino | if (qemu_savevm_state_blocked(NULL)) { |
747 | dc912121 | Alex Williamson | return -EINVAL;
|
748 | dc912121 | Alex Williamson | } |
749 | dc912121 | Alex Williamson | |
750 | a672b469 | aliguori | v = qemu_get_be32(f); |
751 | 38ff78d3 | Eduardo Habkost | if (v != QEMU_VM_FILE_MAGIC) {
|
752 | a672b469 | aliguori | return -EINVAL;
|
753 | 38ff78d3 | Eduardo Habkost | } |
754 | a672b469 | aliguori | |
755 | a672b469 | aliguori | v = qemu_get_be32(f); |
756 | bbfe1408 | Juan Quintela | if (v == QEMU_VM_FILE_VERSION_COMPAT) {
|
757 | bbfe1408 | Juan Quintela | fprintf(stderr, "SaveVM v2 format is obsolete and don't work anymore\n");
|
758 | bbfe1408 | Juan Quintela | return -ENOTSUP;
|
759 | bbfe1408 | Juan Quintela | } |
760 | 38ff78d3 | Eduardo Habkost | if (v != QEMU_VM_FILE_VERSION) {
|
761 | a672b469 | aliguori | return -ENOTSUP;
|
762 | 38ff78d3 | Eduardo Habkost | } |
763 | a672b469 | aliguori | |
764 | a672b469 | aliguori | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) {
|
765 | a672b469 | aliguori | uint32_t instance_id, version_id, section_id; |
766 | a672b469 | aliguori | SaveStateEntry *se; |
767 | a672b469 | aliguori | char idstr[257]; |
768 | a672b469 | aliguori | int len;
|
769 | a672b469 | aliguori | |
770 | a672b469 | aliguori | switch (section_type) {
|
771 | a672b469 | aliguori | case QEMU_VM_SECTION_START:
|
772 | a672b469 | aliguori | case QEMU_VM_SECTION_FULL:
|
773 | a672b469 | aliguori | /* Read section start */
|
774 | a672b469 | aliguori | section_id = qemu_get_be32(f); |
775 | a672b469 | aliguori | len = qemu_get_byte(f); |
776 | a672b469 | aliguori | qemu_get_buffer(f, (uint8_t *)idstr, len); |
777 | a672b469 | aliguori | idstr[len] = 0;
|
778 | a672b469 | aliguori | instance_id = qemu_get_be32(f); |
779 | a672b469 | aliguori | version_id = qemu_get_be32(f); |
780 | a672b469 | aliguori | |
781 | a672b469 | aliguori | /* Find savevm section */
|
782 | a672b469 | aliguori | se = find_se(idstr, instance_id); |
783 | a672b469 | aliguori | if (se == NULL) { |
784 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id);
|
785 | a672b469 | aliguori | ret = -EINVAL; |
786 | a672b469 | aliguori | goto out;
|
787 | a672b469 | aliguori | } |
788 | a672b469 | aliguori | |
789 | a672b469 | aliguori | /* Validate version */
|
790 | a672b469 | aliguori | if (version_id > se->version_id) {
|
791 | a672b469 | aliguori | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n",
|
792 | a672b469 | aliguori | version_id, idstr, se->version_id); |
793 | a672b469 | aliguori | ret = -EINVAL; |
794 | a672b469 | aliguori | goto out;
|
795 | a672b469 | aliguori | } |
796 | a672b469 | aliguori | |
797 | a672b469 | aliguori | /* Add entry */
|
798 | 7267c094 | Anthony Liguori | le = g_malloc0(sizeof(*le));
|
799 | a672b469 | aliguori | |
800 | a672b469 | aliguori | le->se = se; |
801 | a672b469 | aliguori | le->section_id = section_id; |
802 | a672b469 | aliguori | le->version_id = version_id; |
803 | 72cf2d4f | Blue Swirl | QLIST_INSERT_HEAD(&loadvm_handlers, le, entry); |
804 | a672b469 | aliguori | |
805 | 4082be4d | Juan Quintela | ret = vmstate_load(f, le->se, le->version_id); |
806 | b5a22e4a | Juan Quintela | if (ret < 0) { |
807 | b5a22e4a | Juan Quintela | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n",
|
808 | b5a22e4a | Juan Quintela | instance_id, idstr); |
809 | b5a22e4a | Juan Quintela | goto out;
|
810 | b5a22e4a | Juan Quintela | } |
811 | a672b469 | aliguori | break;
|
812 | a672b469 | aliguori | case QEMU_VM_SECTION_PART:
|
813 | a672b469 | aliguori | case QEMU_VM_SECTION_END:
|
814 | a672b469 | aliguori | section_id = qemu_get_be32(f); |
815 | a672b469 | aliguori | |
816 | 72cf2d4f | Blue Swirl | QLIST_FOREACH(le, &loadvm_handlers, entry) { |
817 | f4dbb8dd | Juan Quintela | if (le->section_id == section_id) {
|
818 | f4dbb8dd | Juan Quintela | break;
|
819 | f4dbb8dd | Juan Quintela | } |
820 | f4dbb8dd | Juan Quintela | } |
821 | a672b469 | aliguori | if (le == NULL) { |
822 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section %d\n", section_id);
|
823 | a672b469 | aliguori | ret = -EINVAL; |
824 | a672b469 | aliguori | goto out;
|
825 | a672b469 | aliguori | } |
826 | a672b469 | aliguori | |
827 | 4082be4d | Juan Quintela | ret = vmstate_load(f, le->se, le->version_id); |
828 | b5a22e4a | Juan Quintela | if (ret < 0) { |
829 | b5a22e4a | Juan Quintela | fprintf(stderr, "qemu: warning: error while loading state section id %d\n",
|
830 | b5a22e4a | Juan Quintela | section_id); |
831 | b5a22e4a | Juan Quintela | goto out;
|
832 | b5a22e4a | Juan Quintela | } |
833 | a672b469 | aliguori | break;
|
834 | a672b469 | aliguori | default:
|
835 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section type %d\n", section_type);
|
836 | a672b469 | aliguori | ret = -EINVAL; |
837 | a672b469 | aliguori | goto out;
|
838 | a672b469 | aliguori | } |
839 | a672b469 | aliguori | } |
840 | a672b469 | aliguori | |
841 | ea375f9a | Jan Kiszka | cpu_synchronize_all_post_init(); |
842 | ea375f9a | Jan Kiszka | |
843 | a672b469 | aliguori | ret = 0;
|
844 | a672b469 | aliguori | |
845 | a672b469 | aliguori | out:
|
846 | 72cf2d4f | Blue Swirl | QLIST_FOREACH_SAFE(le, &loadvm_handlers, entry, new_le) { |
847 | 72cf2d4f | Blue Swirl | QLIST_REMOVE(le, entry); |
848 | 7267c094 | Anthony Liguori | g_free(le); |
849 | a672b469 | aliguori | } |
850 | a672b469 | aliguori | |
851 | 42802d47 | Juan Quintela | if (ret == 0) { |
852 | 42802d47 | Juan Quintela | ret = qemu_file_get_error(f); |
853 | 624b9cc2 | Juan Quintela | } |
854 | a672b469 | aliguori | |
855 | a672b469 | aliguori | return ret;
|
856 | a672b469 | aliguori | } |
857 | a672b469 | aliguori | |
858 | 29d78271 | Stefan Hajnoczi | static BlockDriverState *find_vmstate_bs(void) |
859 | 29d78271 | Stefan Hajnoczi | { |
860 | 29d78271 | Stefan Hajnoczi | BlockDriverState *bs = NULL;
|
861 | 29d78271 | Stefan Hajnoczi | while ((bs = bdrv_next(bs))) {
|
862 | 29d78271 | Stefan Hajnoczi | if (bdrv_can_snapshot(bs)) {
|
863 | 29d78271 | Stefan Hajnoczi | return bs;
|
864 | 29d78271 | Stefan Hajnoczi | } |
865 | 29d78271 | Stefan Hajnoczi | } |
866 | 29d78271 | Stefan Hajnoczi | return NULL; |
867 | 29d78271 | Stefan Hajnoczi | } |
868 | 29d78271 | Stefan Hajnoczi | |
869 | cb499fb2 | Kevin Wolf | /*
|
870 | cb499fb2 | Kevin Wolf | * Deletes snapshots of a given name in all opened images.
|
871 | cb499fb2 | Kevin Wolf | */
|
872 | cb499fb2 | Kevin Wolf | static int del_existing_snapshots(Monitor *mon, const char *name) |
873 | cb499fb2 | Kevin Wolf | { |
874 | cb499fb2 | Kevin Wolf | BlockDriverState *bs; |
875 | cb499fb2 | Kevin Wolf | QEMUSnapshotInfo sn1, *snapshot = &sn1; |
876 | a89d89d3 | Wenchao Xia | Error *err = NULL;
|
877 | cb499fb2 | Kevin Wolf | |
878 | dbc13590 | Markus Armbruster | bs = NULL;
|
879 | dbc13590 | Markus Armbruster | while ((bs = bdrv_next(bs))) {
|
880 | cb499fb2 | Kevin Wolf | if (bdrv_can_snapshot(bs) &&
|
881 | 38ff78d3 | Eduardo Habkost | bdrv_snapshot_find(bs, snapshot, name) >= 0) {
|
882 | a89d89d3 | Wenchao Xia | bdrv_snapshot_delete_by_id_or_name(bs, name, &err); |
883 | 84d18f06 | Markus Armbruster | if (err) {
|
884 | cb499fb2 | Kevin Wolf | monitor_printf(mon, |
885 | a89d89d3 | Wenchao Xia | "Error while deleting snapshot on device '%s':"
|
886 | a89d89d3 | Wenchao Xia | " %s\n",
|
887 | a89d89d3 | Wenchao Xia | bdrv_get_device_name(bs), |
888 | a89d89d3 | Wenchao Xia | error_get_pretty(err)); |
889 | a89d89d3 | Wenchao Xia | error_free(err); |
890 | cb499fb2 | Kevin Wolf | return -1; |
891 | cb499fb2 | Kevin Wolf | } |
892 | cb499fb2 | Kevin Wolf | } |
893 | cb499fb2 | Kevin Wolf | } |
894 | cb499fb2 | Kevin Wolf | |
895 | cb499fb2 | Kevin Wolf | return 0; |
896 | cb499fb2 | Kevin Wolf | } |
897 | cb499fb2 | Kevin Wolf | |
898 | d54908a5 | Luiz Capitulino | void do_savevm(Monitor *mon, const QDict *qdict) |
899 | a672b469 | aliguori | { |
900 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
901 | a672b469 | aliguori | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; |
902 | cb499fb2 | Kevin Wolf | int ret;
|
903 | a672b469 | aliguori | QEMUFile *f; |
904 | a672b469 | aliguori | int saved_vm_running;
|
905 | c2c9a466 | Kevin Wolf | uint64_t vm_state_size; |
906 | 68b891ec | Stefan Weil | qemu_timeval tv; |
907 | 7d631a11 | Miguel Di Ciurcio Filho | struct tm tm;
|
908 | d54908a5 | Luiz Capitulino | const char *name = qdict_get_try_str(qdict, "name"); |
909 | a672b469 | aliguori | |
910 | feeee5ac | Miguel Di Ciurcio Filho | /* Verify if there is a device that doesn't support snapshots and is writable */
|
911 | dbc13590 | Markus Armbruster | bs = NULL;
|
912 | dbc13590 | Markus Armbruster | while ((bs = bdrv_next(bs))) {
|
913 | feeee5ac | Miguel Di Ciurcio Filho | |
914 | 07b70bfb | Markus Armbruster | if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) {
|
915 | feeee5ac | Miguel Di Ciurcio Filho | continue;
|
916 | feeee5ac | Miguel Di Ciurcio Filho | } |
917 | feeee5ac | Miguel Di Ciurcio Filho | |
918 | feeee5ac | Miguel Di Ciurcio Filho | if (!bdrv_can_snapshot(bs)) {
|
919 | feeee5ac | Miguel Di Ciurcio Filho | monitor_printf(mon, "Device '%s' is writable but does not support snapshots.\n",
|
920 | feeee5ac | Miguel Di Ciurcio Filho | bdrv_get_device_name(bs)); |
921 | feeee5ac | Miguel Di Ciurcio Filho | return;
|
922 | feeee5ac | Miguel Di Ciurcio Filho | } |
923 | feeee5ac | Miguel Di Ciurcio Filho | } |
924 | feeee5ac | Miguel Di Ciurcio Filho | |
925 | 29d78271 | Stefan Hajnoczi | bs = find_vmstate_bs(); |
926 | a672b469 | aliguori | if (!bs) {
|
927 | 376253ec | aliguori | monitor_printf(mon, "No block device can accept snapshots\n");
|
928 | a672b469 | aliguori | return;
|
929 | a672b469 | aliguori | } |
930 | a672b469 | aliguori | |
931 | 1354869c | Luiz Capitulino | saved_vm_running = runstate_is_running(); |
932 | 0461d5a6 | Luiz Capitulino | vm_stop(RUN_STATE_SAVE_VM); |
933 | a672b469 | aliguori | |
934 | cb499fb2 | Kevin Wolf | memset(sn, 0, sizeof(*sn)); |
935 | a672b469 | aliguori | |
936 | a672b469 | aliguori | /* fill auxiliary fields */
|
937 | 68b891ec | Stefan Weil | qemu_gettimeofday(&tv); |
938 | a672b469 | aliguori | sn->date_sec = tv.tv_sec; |
939 | a672b469 | aliguori | sn->date_nsec = tv.tv_usec * 1000;
|
940 | bc72ad67 | Alex Bligh | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
941 | a672b469 | aliguori | |
942 | 7d631a11 | Miguel Di Ciurcio Filho | if (name) {
|
943 | 7d631a11 | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_find(bs, old_sn, name); |
944 | 7d631a11 | Miguel Di Ciurcio Filho | if (ret >= 0) { |
945 | 7d631a11 | Miguel Di Ciurcio Filho | pstrcpy(sn->name, sizeof(sn->name), old_sn->name);
|
946 | 7d631a11 | Miguel Di Ciurcio Filho | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str);
|
947 | 7d631a11 | Miguel Di Ciurcio Filho | } else {
|
948 | 7d631a11 | Miguel Di Ciurcio Filho | pstrcpy(sn->name, sizeof(sn->name), name);
|
949 | 7d631a11 | Miguel Di Ciurcio Filho | } |
950 | 7d631a11 | Miguel Di Ciurcio Filho | } else {
|
951 | d7d9b528 | Blue Swirl | /* cast below needed for OpenBSD where tv_sec is still 'long' */
|
952 | d7d9b528 | Blue Swirl | localtime_r((const time_t *)&tv.tv_sec, &tm);
|
953 | 7d631a11 | Miguel Di Ciurcio Filho | strftime(sn->name, sizeof(sn->name), "vm-%Y%m%d%H%M%S", &tm); |
954 | 7d631a11 | Miguel Di Ciurcio Filho | } |
955 | 7d631a11 | Miguel Di Ciurcio Filho | |
956 | cb499fb2 | Kevin Wolf | /* Delete old snapshots of the same name */
|
957 | f139a412 | Marcelo Tosatti | if (name && del_existing_snapshots(mon, name) < 0) { |
958 | cb499fb2 | Kevin Wolf | goto the_end;
|
959 | cb499fb2 | Kevin Wolf | } |
960 | cb499fb2 | Kevin Wolf | |
961 | a672b469 | aliguori | /* save the VM state */
|
962 | 45566e9c | Christoph Hellwig | f = qemu_fopen_bdrv(bs, 1);
|
963 | a672b469 | aliguori | if (!f) {
|
964 | 376253ec | aliguori | monitor_printf(mon, "Could not open VM state file\n");
|
965 | a672b469 | aliguori | goto the_end;
|
966 | a672b469 | aliguori | } |
967 | e1c37d0e | Luiz Capitulino | ret = qemu_savevm_state(f); |
968 | 2d22b18f | aliguori | vm_state_size = qemu_ftell(f); |
969 | a672b469 | aliguori | qemu_fclose(f); |
970 | a672b469 | aliguori | if (ret < 0) { |
971 | 376253ec | aliguori | monitor_printf(mon, "Error %d while writing VM\n", ret);
|
972 | a672b469 | aliguori | goto the_end;
|
973 | a672b469 | aliguori | } |
974 | a672b469 | aliguori | |
975 | a672b469 | aliguori | /* create the snapshots */
|
976 | a672b469 | aliguori | |
977 | dbc13590 | Markus Armbruster | bs1 = NULL;
|
978 | dbc13590 | Markus Armbruster | while ((bs1 = bdrv_next(bs1))) {
|
979 | feeee5ac | Miguel Di Ciurcio Filho | if (bdrv_can_snapshot(bs1)) {
|
980 | 2d22b18f | aliguori | /* Write VM state size only to the image that contains the state */
|
981 | 2d22b18f | aliguori | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0);
|
982 | a672b469 | aliguori | ret = bdrv_snapshot_create(bs1, sn); |
983 | a672b469 | aliguori | if (ret < 0) { |
984 | 376253ec | aliguori | monitor_printf(mon, "Error while creating snapshot on '%s'\n",
|
985 | 376253ec | aliguori | bdrv_get_device_name(bs1)); |
986 | a672b469 | aliguori | } |
987 | a672b469 | aliguori | } |
988 | a672b469 | aliguori | } |
989 | a672b469 | aliguori | |
990 | a672b469 | aliguori | the_end:
|
991 | 38ff78d3 | Eduardo Habkost | if (saved_vm_running) {
|
992 | a672b469 | aliguori | vm_start(); |
993 | 38ff78d3 | Eduardo Habkost | } |
994 | a672b469 | aliguori | } |
995 | a672b469 | aliguori | |
996 | a7ae8355 | Stefano Stabellini | void qmp_xen_save_devices_state(const char *filename, Error **errp) |
997 | a7ae8355 | Stefano Stabellini | { |
998 | a7ae8355 | Stefano Stabellini | QEMUFile *f; |
999 | a7ae8355 | Stefano Stabellini | int saved_vm_running;
|
1000 | a7ae8355 | Stefano Stabellini | int ret;
|
1001 | a7ae8355 | Stefano Stabellini | |
1002 | a7ae8355 | Stefano Stabellini | saved_vm_running = runstate_is_running(); |
1003 | a7ae8355 | Stefano Stabellini | vm_stop(RUN_STATE_SAVE_VM); |
1004 | a7ae8355 | Stefano Stabellini | |
1005 | a7ae8355 | Stefano Stabellini | f = qemu_fopen(filename, "wb");
|
1006 | a7ae8355 | Stefano Stabellini | if (!f) {
|
1007 | 1befce96 | Luiz Capitulino | error_setg_file_open(errp, errno, filename); |
1008 | a7ae8355 | Stefano Stabellini | goto the_end;
|
1009 | a7ae8355 | Stefano Stabellini | } |
1010 | a7ae8355 | Stefano Stabellini | ret = qemu_save_device_state(f); |
1011 | a7ae8355 | Stefano Stabellini | qemu_fclose(f); |
1012 | a7ae8355 | Stefano Stabellini | if (ret < 0) { |
1013 | a7ae8355 | Stefano Stabellini | error_set(errp, QERR_IO_ERROR); |
1014 | a7ae8355 | Stefano Stabellini | } |
1015 | a7ae8355 | Stefano Stabellini | |
1016 | a7ae8355 | Stefano Stabellini | the_end:
|
1017 | 38ff78d3 | Eduardo Habkost | if (saved_vm_running) {
|
1018 | a7ae8355 | Stefano Stabellini | vm_start(); |
1019 | 38ff78d3 | Eduardo Habkost | } |
1020 | a7ae8355 | Stefano Stabellini | } |
1021 | a7ae8355 | Stefano Stabellini | |
1022 | 03cd4655 | Markus Armbruster | int load_vmstate(const char *name) |
1023 | a672b469 | aliguori | { |
1024 | f0aa7a8b | Miguel Di Ciurcio Filho | BlockDriverState *bs, *bs_vm_state; |
1025 | 2d22b18f | aliguori | QEMUSnapshotInfo sn; |
1026 | a672b469 | aliguori | QEMUFile *f; |
1027 | 751c6a17 | Gerd Hoffmann | int ret;
|
1028 | a672b469 | aliguori | |
1029 | 29d78271 | Stefan Hajnoczi | bs_vm_state = find_vmstate_bs(); |
1030 | f0aa7a8b | Miguel Di Ciurcio Filho | if (!bs_vm_state) {
|
1031 | f0aa7a8b | Miguel Di Ciurcio Filho | error_report("No block device supports snapshots");
|
1032 | f0aa7a8b | Miguel Di Ciurcio Filho | return -ENOTSUP;
|
1033 | f0aa7a8b | Miguel Di Ciurcio Filho | } |
1034 | f0aa7a8b | Miguel Di Ciurcio Filho | |
1035 | f0aa7a8b | Miguel Di Ciurcio Filho | /* Don't even try to load empty VM states */
|
1036 | f0aa7a8b | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_find(bs_vm_state, &sn, name); |
1037 | f0aa7a8b | Miguel Di Ciurcio Filho | if (ret < 0) { |
1038 | f0aa7a8b | Miguel Di Ciurcio Filho | return ret;
|
1039 | f0aa7a8b | Miguel Di Ciurcio Filho | } else if (sn.vm_state_size == 0) { |
1040 | e11480db | Kevin Wolf | error_report("This is a disk-only snapshot. Revert to it offline "
|
1041 | e11480db | Kevin Wolf | "using qemu-img.");
|
1042 | f0aa7a8b | Miguel Di Ciurcio Filho | return -EINVAL;
|
1043 | f0aa7a8b | Miguel Di Ciurcio Filho | } |
1044 | f0aa7a8b | Miguel Di Ciurcio Filho | |
1045 | f0aa7a8b | Miguel Di Ciurcio Filho | /* Verify if there is any device that doesn't support snapshots and is
|
1046 | f0aa7a8b | Miguel Di Ciurcio Filho | writable and check if the requested snapshot is available too. */
|
1047 | dbc13590 | Markus Armbruster | bs = NULL;
|
1048 | dbc13590 | Markus Armbruster | while ((bs = bdrv_next(bs))) {
|
1049 | feeee5ac | Miguel Di Ciurcio Filho | |
1050 | 07b70bfb | Markus Armbruster | if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) {
|
1051 | feeee5ac | Miguel Di Ciurcio Filho | continue;
|
1052 | feeee5ac | Miguel Di Ciurcio Filho | } |
1053 | feeee5ac | Miguel Di Ciurcio Filho | |
1054 | feeee5ac | Miguel Di Ciurcio Filho | if (!bdrv_can_snapshot(bs)) {
|
1055 | feeee5ac | Miguel Di Ciurcio Filho | error_report("Device '%s' is writable but does not support snapshots.",
|
1056 | feeee5ac | Miguel Di Ciurcio Filho | bdrv_get_device_name(bs)); |
1057 | feeee5ac | Miguel Di Ciurcio Filho | return -ENOTSUP;
|
1058 | feeee5ac | Miguel Di Ciurcio Filho | } |
1059 | feeee5ac | Miguel Di Ciurcio Filho | |
1060 | f0aa7a8b | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_find(bs, &sn, name); |
1061 | f0aa7a8b | Miguel Di Ciurcio Filho | if (ret < 0) { |
1062 | f0aa7a8b | Miguel Di Ciurcio Filho | error_report("Device '%s' does not have the requested snapshot '%s'",
|
1063 | f0aa7a8b | Miguel Di Ciurcio Filho | bdrv_get_device_name(bs), name); |
1064 | f0aa7a8b | Miguel Di Ciurcio Filho | return ret;
|
1065 | f0aa7a8b | Miguel Di Ciurcio Filho | } |
1066 | a672b469 | aliguori | } |
1067 | a672b469 | aliguori | |
1068 | a672b469 | aliguori | /* Flush all IO requests so they don't interfere with the new state. */
|
1069 | 922453bc | Stefan Hajnoczi | bdrv_drain_all(); |
1070 | a672b469 | aliguori | |
1071 | f0aa7a8b | Miguel Di Ciurcio Filho | bs = NULL;
|
1072 | f0aa7a8b | Miguel Di Ciurcio Filho | while ((bs = bdrv_next(bs))) {
|
1073 | f0aa7a8b | Miguel Di Ciurcio Filho | if (bdrv_can_snapshot(bs)) {
|
1074 | f0aa7a8b | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_goto(bs, name); |
1075 | a672b469 | aliguori | if (ret < 0) { |
1076 | f0aa7a8b | Miguel Di Ciurcio Filho | error_report("Error %d while activating snapshot '%s' on '%s'",
|
1077 | f0aa7a8b | Miguel Di Ciurcio Filho | ret, name, bdrv_get_device_name(bs)); |
1078 | f0aa7a8b | Miguel Di Ciurcio Filho | return ret;
|
1079 | a672b469 | aliguori | } |
1080 | a672b469 | aliguori | } |
1081 | a672b469 | aliguori | } |
1082 | a672b469 | aliguori | |
1083 | a672b469 | aliguori | /* restore the VM state */
|
1084 | f0aa7a8b | Miguel Di Ciurcio Filho | f = qemu_fopen_bdrv(bs_vm_state, 0);
|
1085 | a672b469 | aliguori | if (!f) {
|
1086 | 1ecda02b | Markus Armbruster | error_report("Could not open VM state file");
|
1087 | 05f2401e | Juan Quintela | return -EINVAL;
|
1088 | a672b469 | aliguori | } |
1089 | f0aa7a8b | Miguel Di Ciurcio Filho | |
1090 | 5a8a49d7 | Jan Kiszka | qemu_system_reset(VMRESET_SILENT); |
1091 | a672b469 | aliguori | ret = qemu_loadvm_state(f); |
1092 | f0aa7a8b | Miguel Di Ciurcio Filho | |
1093 | a672b469 | aliguori | qemu_fclose(f); |
1094 | a672b469 | aliguori | if (ret < 0) { |
1095 | 1ecda02b | Markus Armbruster | error_report("Error %d while loading VM state", ret);
|
1096 | 05f2401e | Juan Quintela | return ret;
|
1097 | a672b469 | aliguori | } |
1098 | f0aa7a8b | Miguel Di Ciurcio Filho | |
1099 | 05f2401e | Juan Quintela | return 0; |
1100 | 7b630349 | Juan Quintela | } |
1101 | 7b630349 | Juan Quintela | |
1102 | d54908a5 | Luiz Capitulino | void do_delvm(Monitor *mon, const QDict *qdict) |
1103 | a672b469 | aliguori | { |
1104 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
1105 | a89d89d3 | Wenchao Xia | Error *err = NULL;
|
1106 | d54908a5 | Luiz Capitulino | const char *name = qdict_get_str(qdict, "name"); |
1107 | a672b469 | aliguori | |
1108 | 29d78271 | Stefan Hajnoczi | bs = find_vmstate_bs(); |
1109 | a672b469 | aliguori | if (!bs) {
|
1110 | 376253ec | aliguori | monitor_printf(mon, "No block device supports snapshots\n");
|
1111 | a672b469 | aliguori | return;
|
1112 | a672b469 | aliguori | } |
1113 | a672b469 | aliguori | |
1114 | dbc13590 | Markus Armbruster | bs1 = NULL;
|
1115 | dbc13590 | Markus Armbruster | while ((bs1 = bdrv_next(bs1))) {
|
1116 | feeee5ac | Miguel Di Ciurcio Filho | if (bdrv_can_snapshot(bs1)) {
|
1117 | a89d89d3 | Wenchao Xia | bdrv_snapshot_delete_by_id_or_name(bs, name, &err); |
1118 | 84d18f06 | Markus Armbruster | if (err) {
|
1119 | a89d89d3 | Wenchao Xia | monitor_printf(mon, |
1120 | a89d89d3 | Wenchao Xia | "Error while deleting snapshot on device '%s':"
|
1121 | a89d89d3 | Wenchao Xia | " %s\n",
|
1122 | a89d89d3 | Wenchao Xia | bdrv_get_device_name(bs), |
1123 | a89d89d3 | Wenchao Xia | error_get_pretty(err)); |
1124 | a89d89d3 | Wenchao Xia | error_free(err); |
1125 | a672b469 | aliguori | } |
1126 | a672b469 | aliguori | } |
1127 | a672b469 | aliguori | } |
1128 | a672b469 | aliguori | } |
1129 | a672b469 | aliguori | |
1130 | 84f2d0ea | Wenchao Xia | void do_info_snapshots(Monitor *mon, const QDict *qdict) |
1131 | a672b469 | aliguori | { |
1132 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
1133 | f9209915 | Miguel Di Ciurcio Filho | QEMUSnapshotInfo *sn_tab, *sn, s, *sn_info = &s; |
1134 | f9209915 | Miguel Di Ciurcio Filho | int nb_sns, i, ret, available;
|
1135 | f9209915 | Miguel Di Ciurcio Filho | int total;
|
1136 | f9209915 | Miguel Di Ciurcio Filho | int *available_snapshots;
|
1137 | a672b469 | aliguori | |
1138 | 29d78271 | Stefan Hajnoczi | bs = find_vmstate_bs(); |
1139 | a672b469 | aliguori | if (!bs) {
|
1140 | 376253ec | aliguori | monitor_printf(mon, "No available block device supports snapshots\n");
|
1141 | a672b469 | aliguori | return;
|
1142 | a672b469 | aliguori | } |
1143 | a672b469 | aliguori | |
1144 | a672b469 | aliguori | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
1145 | a672b469 | aliguori | if (nb_sns < 0) { |
1146 | 376253ec | aliguori | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns);
|
1147 | a672b469 | aliguori | return;
|
1148 | a672b469 | aliguori | } |
1149 | f9209915 | Miguel Di Ciurcio Filho | |
1150 | f9209915 | Miguel Di Ciurcio Filho | if (nb_sns == 0) { |
1151 | f9209915 | Miguel Di Ciurcio Filho | monitor_printf(mon, "There is no snapshot available.\n");
|
1152 | f9209915 | Miguel Di Ciurcio Filho | return;
|
1153 | f9209915 | Miguel Di Ciurcio Filho | } |
1154 | f9209915 | Miguel Di Ciurcio Filho | |
1155 | 7267c094 | Anthony Liguori | available_snapshots = g_malloc0(sizeof(int) * nb_sns); |
1156 | f9209915 | Miguel Di Ciurcio Filho | total = 0;
|
1157 | f9209915 | Miguel Di Ciurcio Filho | for (i = 0; i < nb_sns; i++) { |
1158 | a672b469 | aliguori | sn = &sn_tab[i]; |
1159 | f9209915 | Miguel Di Ciurcio Filho | available = 1;
|
1160 | f9209915 | Miguel Di Ciurcio Filho | bs1 = NULL;
|
1161 | f9209915 | Miguel Di Ciurcio Filho | |
1162 | f9209915 | Miguel Di Ciurcio Filho | while ((bs1 = bdrv_next(bs1))) {
|
1163 | f9209915 | Miguel Di Ciurcio Filho | if (bdrv_can_snapshot(bs1) && bs1 != bs) {
|
1164 | f9209915 | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_find(bs1, sn_info, sn->id_str); |
1165 | f9209915 | Miguel Di Ciurcio Filho | if (ret < 0) { |
1166 | f9209915 | Miguel Di Ciurcio Filho | available = 0;
|
1167 | f9209915 | Miguel Di Ciurcio Filho | break;
|
1168 | f9209915 | Miguel Di Ciurcio Filho | } |
1169 | f9209915 | Miguel Di Ciurcio Filho | } |
1170 | f9209915 | Miguel Di Ciurcio Filho | } |
1171 | f9209915 | Miguel Di Ciurcio Filho | |
1172 | f9209915 | Miguel Di Ciurcio Filho | if (available) {
|
1173 | f9209915 | Miguel Di Ciurcio Filho | available_snapshots[total] = i; |
1174 | f9209915 | Miguel Di Ciurcio Filho | total++; |
1175 | f9209915 | Miguel Di Ciurcio Filho | } |
1176 | a672b469 | aliguori | } |
1177 | f9209915 | Miguel Di Ciurcio Filho | |
1178 | f9209915 | Miguel Di Ciurcio Filho | if (total > 0) { |
1179 | 5b917044 | Wenchao Xia | bdrv_snapshot_dump((fprintf_function)monitor_printf, mon, NULL);
|
1180 | 5b917044 | Wenchao Xia | monitor_printf(mon, "\n");
|
1181 | f9209915 | Miguel Di Ciurcio Filho | for (i = 0; i < total; i++) { |
1182 | f9209915 | Miguel Di Ciurcio Filho | sn = &sn_tab[available_snapshots[i]]; |
1183 | 5b917044 | Wenchao Xia | bdrv_snapshot_dump((fprintf_function)monitor_printf, mon, sn); |
1184 | 5b917044 | Wenchao Xia | monitor_printf(mon, "\n");
|
1185 | f9209915 | Miguel Di Ciurcio Filho | } |
1186 | f9209915 | Miguel Di Ciurcio Filho | } else {
|
1187 | f9209915 | Miguel Di Ciurcio Filho | monitor_printf(mon, "There is no suitable snapshot available\n");
|
1188 | f9209915 | Miguel Di Ciurcio Filho | } |
1189 | f9209915 | Miguel Di Ciurcio Filho | |
1190 | 7267c094 | Anthony Liguori | g_free(sn_tab); |
1191 | 7267c094 | Anthony Liguori | g_free(available_snapshots); |
1192 | f9209915 | Miguel Di Ciurcio Filho | |
1193 | a672b469 | aliguori | } |
1194 | c5705a77 | Avi Kivity | |
1195 | c5705a77 | Avi Kivity | void vmstate_register_ram(MemoryRegion *mr, DeviceState *dev)
|
1196 | c5705a77 | Avi Kivity | { |
1197 | 1ddde087 | Avi Kivity | qemu_ram_set_idstr(memory_region_get_ram_addr(mr) & TARGET_PAGE_MASK, |
1198 | c5705a77 | Avi Kivity | memory_region_name(mr), dev); |
1199 | c5705a77 | Avi Kivity | } |
1200 | c5705a77 | Avi Kivity | |
1201 | c5705a77 | Avi Kivity | void vmstate_unregister_ram(MemoryRegion *mr, DeviceState *dev)
|
1202 | c5705a77 | Avi Kivity | { |
1203 | c5705a77 | Avi Kivity | /* Nothing do to while the implementation is in RAMBlock */
|
1204 | c5705a77 | Avi Kivity | } |
1205 | c5705a77 | Avi Kivity | |
1206 | c5705a77 | Avi Kivity | void vmstate_register_ram_global(MemoryRegion *mr)
|
1207 | c5705a77 | Avi Kivity | { |
1208 | c5705a77 | Avi Kivity | vmstate_register_ram(mr, NULL);
|
1209 | c5705a77 | Avi Kivity | } |