aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1 | /* |
| 2 | * QEMU System Emulator |
| 3 | * |
| 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 24 | |
blueswir1 | d40cdb1 | 2009-03-07 16:52:02 +0000 | [diff] [blame] | 25 | #include "config-host.h" |
blueswir1 | 511d2b1 | 2009-03-07 15:32:56 +0000 | [diff] [blame] | 26 | #include "qemu-common.h" |
Amit Shah | abfd9ce | 2014-06-20 18:56:08 +0530 | [diff] [blame] | 27 | #include "hw/boards.h" |
blueswir1 | 511d2b1 | 2009-03-07 15:32:56 +0000 | [diff] [blame] | 28 | #include "hw/hw.h" |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 29 | #include "hw/qdev.h" |
Paolo Bonzini | 1422e32 | 2012-10-24 08:43:34 +0200 | [diff] [blame] | 30 | #include "net/net.h" |
Paolo Bonzini | 83c9089 | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 31 | #include "monitor/monitor.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 32 | #include "sysemu/sysemu.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 33 | #include "qemu/timer.h" |
blueswir1 | 511d2b1 | 2009-03-07 15:32:56 +0000 | [diff] [blame] | 34 | #include "audio/audio.h" |
Paolo Bonzini | caf71f8 | 2012-12-17 18:19:50 +0100 | [diff] [blame] | 35 | #include "migration/migration.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 36 | #include "qemu/sockets.h" |
| 37 | #include "qemu/queue.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 38 | #include "sysemu/cpus.h" |
Paolo Bonzini | 022c62c | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 39 | #include "exec/memory.h" |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 40 | #include "qmp-commands.h" |
Juan Quintela | 517a13c | 2012-05-21 23:46:44 +0200 | [diff] [blame] | 41 | #include "trace.h" |
Orit Wasserman | 28085f7 | 2013-03-22 16:47:58 +0200 | [diff] [blame] | 42 | #include "qemu/iov.h" |
Wenchao Xia | de08c60 | 2013-05-25 11:09:43 +0800 | [diff] [blame] | 43 | #include "block/snapshot.h" |
Wenchao Xia | f364ec6 | 2013-05-25 11:09:44 +0800 | [diff] [blame] | 44 | #include "block/qapi.h" |
blueswir1 | 511d2b1 | 2009-03-07 15:32:56 +0000 | [diff] [blame] | 45 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 46 | |
Nolan | 18995b9 | 2009-10-15 16:53:55 -0700 | [diff] [blame] | 47 | #ifndef ETH_P_RARP |
Stefan Berger | f8778a7 | 2010-04-24 08:54:07 -0400 | [diff] [blame] | 48 | #define ETH_P_RARP 0x8035 |
Nolan | 18995b9 | 2009-10-15 16:53:55 -0700 | [diff] [blame] | 49 | #endif |
| 50 | #define ARP_HTYPE_ETH 0x0001 |
| 51 | #define ARP_PTYPE_IP 0x0800 |
| 52 | #define ARP_OP_REQUEST_REV 0x3 |
| 53 | |
| 54 | static int announce_self_create(uint8_t *buf, |
Eduardo Habkost | 5cecf41 | 2013-11-28 12:01:12 -0200 | [diff] [blame] | 55 | uint8_t *mac_addr) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 56 | { |
Nolan | 18995b9 | 2009-10-15 16:53:55 -0700 | [diff] [blame] | 57 | /* Ethernet header. */ |
| 58 | memset(buf, 0xff, 6); /* destination MAC addr */ |
| 59 | memcpy(buf + 6, mac_addr, 6); /* source MAC addr */ |
| 60 | *(uint16_t *)(buf + 12) = htons(ETH_P_RARP); /* ethertype */ |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 61 | |
Nolan | 18995b9 | 2009-10-15 16:53:55 -0700 | [diff] [blame] | 62 | /* RARP header. */ |
| 63 | *(uint16_t *)(buf + 14) = htons(ARP_HTYPE_ETH); /* hardware addr space */ |
| 64 | *(uint16_t *)(buf + 16) = htons(ARP_PTYPE_IP); /* protocol addr space */ |
| 65 | *(buf + 18) = 6; /* hardware addr length (ethernet) */ |
| 66 | *(buf + 19) = 4; /* protocol addr length (IPv4) */ |
| 67 | *(uint16_t *)(buf + 20) = htons(ARP_OP_REQUEST_REV); /* opcode */ |
| 68 | memcpy(buf + 22, mac_addr, 6); /* source hw addr */ |
| 69 | memset(buf + 28, 0x00, 4); /* source protocol addr */ |
| 70 | memcpy(buf + 32, mac_addr, 6); /* target hw addr */ |
| 71 | memset(buf + 38, 0x00, 4); /* target protocol addr */ |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 72 | |
Nolan | 18995b9 | 2009-10-15 16:53:55 -0700 | [diff] [blame] | 73 | /* Padding to get up to 60 bytes (ethernet min packet size, minus FCS). */ |
| 74 | memset(buf + 42, 0x00, 18); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 75 | |
Nolan | 18995b9 | 2009-10-15 16:53:55 -0700 | [diff] [blame] | 76 | return 60; /* len (FCS will be added by hardware) */ |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 77 | } |
| 78 | |
Mark McLoughlin | f401ca2 | 2009-11-25 18:49:32 +0000 | [diff] [blame] | 79 | static void qemu_announce_self_iter(NICState *nic, void *opaque) |
| 80 | { |
| 81 | uint8_t buf[60]; |
| 82 | int len; |
| 83 | |
Alexey Kardashevskiy | 9013dca | 2014-03-11 10:42:29 +1100 | [diff] [blame] | 84 | trace_qemu_announce_self_iter(qemu_ether_ntoa(&nic->conf->macaddr)); |
Mark McLoughlin | f401ca2 | 2009-11-25 18:49:32 +0000 | [diff] [blame] | 85 | len = announce_self_create(buf, nic->conf->macaddr.a); |
| 86 | |
Jason Wang | b356f76 | 2013-01-30 19:12:22 +0800 | [diff] [blame] | 87 | qemu_send_packet_raw(qemu_get_queue(nic), buf, len); |
Mark McLoughlin | f401ca2 | 2009-11-25 18:49:32 +0000 | [diff] [blame] | 88 | } |
| 89 | |
| 90 | |
Gleb Natapov | ed8b330 | 2009-05-21 17:17:44 +0300 | [diff] [blame] | 91 | static void qemu_announce_self_once(void *opaque) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 92 | { |
Gleb Natapov | ed8b330 | 2009-05-21 17:17:44 +0300 | [diff] [blame] | 93 | static int count = SELF_ANNOUNCE_ROUNDS; |
| 94 | QEMUTimer *timer = *(QEMUTimer **)opaque; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 95 | |
Mark McLoughlin | f401ca2 | 2009-11-25 18:49:32 +0000 | [diff] [blame] | 96 | qemu_foreach_nic(qemu_announce_self_iter, NULL); |
| 97 | |
Nolan | 18995b9 | 2009-10-15 16:53:55 -0700 | [diff] [blame] | 98 | if (--count) { |
| 99 | /* delay 50ms, 150ms, 250ms, ... */ |
Alex Bligh | bc72ad6 | 2013-08-21 16:03:08 +0100 | [diff] [blame] | 100 | timer_mod(timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + |
Jason Wang | 508e118 | 2014-05-20 14:01:43 +0800 | [diff] [blame] | 101 | self_announce_delay(count)); |
Gleb Natapov | ed8b330 | 2009-05-21 17:17:44 +0300 | [diff] [blame] | 102 | } else { |
Eduardo Habkost | 5cecf41 | 2013-11-28 12:01:12 -0200 | [diff] [blame] | 103 | timer_del(timer); |
| 104 | timer_free(timer); |
Gleb Natapov | ed8b330 | 2009-05-21 17:17:44 +0300 | [diff] [blame] | 105 | } |
| 106 | } |
| 107 | |
| 108 | void qemu_announce_self(void) |
| 109 | { |
Eduardo Habkost | 5cecf41 | 2013-11-28 12:01:12 -0200 | [diff] [blame] | 110 | static QEMUTimer *timer; |
| 111 | timer = timer_new_ms(QEMU_CLOCK_REALTIME, qemu_announce_self_once, &timer); |
| 112 | qemu_announce_self_once(&timer); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 113 | } |
| 114 | |
| 115 | /***********************************************************/ |
| 116 | /* savevm/loadvm support */ |
| 117 | |
Kevin Wolf | 05fcc84 | 2013-04-05 21:27:54 +0200 | [diff] [blame] | 118 | static ssize_t block_writev_buffer(void *opaque, struct iovec *iov, int iovcnt, |
| 119 | int64_t pos) |
| 120 | { |
| 121 | int ret; |
| 122 | QEMUIOVector qiov; |
| 123 | |
| 124 | qemu_iovec_init_external(&qiov, iov, iovcnt); |
| 125 | ret = bdrv_writev_vmstate(opaque, &qiov, pos); |
| 126 | if (ret < 0) { |
| 127 | return ret; |
| 128 | } |
| 129 | |
| 130 | return qiov.size; |
| 131 | } |
| 132 | |
aliguori | 178e08a | 2009-04-05 19:10:55 +0000 | [diff] [blame] | 133 | static int block_put_buffer(void *opaque, const uint8_t *buf, |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 134 | int64_t pos, int size) |
| 135 | { |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 136 | bdrv_save_vmstate(opaque, buf, pos, size); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 137 | return size; |
| 138 | } |
| 139 | |
aliguori | 178e08a | 2009-04-05 19:10:55 +0000 | [diff] [blame] | 140 | static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 141 | { |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 142 | return bdrv_load_vmstate(opaque, buf, pos, size); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 143 | } |
| 144 | |
| 145 | static int bdrv_fclose(void *opaque) |
| 146 | { |
Paolo Bonzini | ad492c9 | 2012-06-06 00:04:50 +0200 | [diff] [blame] | 147 | return bdrv_flush(opaque); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 148 | } |
| 149 | |
Paolo Bonzini | 9229bf3 | 2012-08-08 10:15:15 +0200 | [diff] [blame] | 150 | static const QEMUFileOps bdrv_read_ops = { |
| 151 | .get_buffer = block_get_buffer, |
| 152 | .close = bdrv_fclose |
| 153 | }; |
| 154 | |
| 155 | static const QEMUFileOps bdrv_write_ops = { |
Kevin Wolf | 05fcc84 | 2013-04-05 21:27:54 +0200 | [diff] [blame] | 156 | .put_buffer = block_put_buffer, |
| 157 | .writev_buffer = block_writev_buffer, |
| 158 | .close = bdrv_fclose |
Paolo Bonzini | 9229bf3 | 2012-08-08 10:15:15 +0200 | [diff] [blame] | 159 | }; |
| 160 | |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 161 | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 162 | { |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 163 | if (is_writable) { |
Paolo Bonzini | 9229bf3 | 2012-08-08 10:15:15 +0200 | [diff] [blame] | 164 | return qemu_fopen_ops(bs, &bdrv_write_ops); |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 165 | } |
Paolo Bonzini | 9229bf3 | 2012-08-08 10:15:15 +0200 | [diff] [blame] | 166 | return qemu_fopen_ops(bs, &bdrv_read_ops); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 167 | } |
| 168 | |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 169 | |
Eduardo Habkost | bb1a6d8 | 2013-11-29 12:26:02 -0200 | [diff] [blame] | 170 | /* QEMUFile timer support. |
| 171 | * Not in qemu-file.c to not add qemu-timer.c as dependency to qemu-file.c |
| 172 | */ |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 173 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 174 | void timer_put(QEMUFile *f, QEMUTimer *ts) |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 175 | { |
| 176 | uint64_t expire_time; |
| 177 | |
Alex Bligh | e93379b | 2013-08-21 16:02:39 +0100 | [diff] [blame] | 178 | expire_time = timer_expire_time_ns(ts); |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 179 | qemu_put_be64(f, expire_time); |
| 180 | } |
| 181 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 182 | void timer_get(QEMUFile *f, QEMUTimer *ts) |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 183 | { |
| 184 | uint64_t expire_time; |
| 185 | |
| 186 | expire_time = qemu_get_be64(f); |
| 187 | if (expire_time != -1) { |
Alex Bligh | bc72ad6 | 2013-08-21 16:03:08 +0100 | [diff] [blame] | 188 | timer_mod_ns(ts, expire_time); |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 189 | } else { |
Alex Bligh | bc72ad6 | 2013-08-21 16:03:08 +0100 | [diff] [blame] | 190 | timer_del(ts); |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 191 | } |
| 192 | } |
| 193 | |
| 194 | |
Eduardo Habkost | bb1a6d8 | 2013-11-29 12:26:02 -0200 | [diff] [blame] | 195 | /* VMState timer support. |
| 196 | * Not in vmstate.c to not add qemu-timer.c as dependency to vmstate.c |
| 197 | */ |
Juan Quintela | dde0463 | 2009-08-20 19:42:26 +0200 | [diff] [blame] | 198 | |
| 199 | static int get_timer(QEMUFile *f, void *pv, size_t size) |
| 200 | { |
| 201 | QEMUTimer *v = pv; |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 202 | timer_get(f, v); |
Juan Quintela | dde0463 | 2009-08-20 19:42:26 +0200 | [diff] [blame] | 203 | return 0; |
| 204 | } |
| 205 | |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 206 | static void put_timer(QEMUFile *f, void *pv, size_t size) |
Juan Quintela | dde0463 | 2009-08-20 19:42:26 +0200 | [diff] [blame] | 207 | { |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 208 | QEMUTimer *v = pv; |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 209 | timer_put(f, v); |
Juan Quintela | dde0463 | 2009-08-20 19:42:26 +0200 | [diff] [blame] | 210 | } |
| 211 | |
| 212 | const VMStateInfo vmstate_info_timer = { |
| 213 | .name = "timer", |
| 214 | .get = get_timer, |
| 215 | .put = put_timer, |
| 216 | }; |
| 217 | |
Peter Maydell | 08e99e2 | 2012-10-30 07:45:12 +0000 | [diff] [blame] | 218 | |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 219 | typedef struct CompatEntry { |
| 220 | char idstr[256]; |
| 221 | int instance_id; |
| 222 | } CompatEntry; |
| 223 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 224 | typedef struct SaveStateEntry { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 225 | QTAILQ_ENTRY(SaveStateEntry) entry; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 226 | char idstr[256]; |
| 227 | int instance_id; |
Jan Kiszka | 4d2ffa0 | 2010-05-15 13:32:40 +0200 | [diff] [blame] | 228 | int alias_id; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 229 | int version_id; |
| 230 | int section_id; |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 231 | SaveVMHandlers *ops; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 232 | const VMStateDescription *vmsd; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 233 | void *opaque; |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 234 | CompatEntry *compat; |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 235 | int is_ram; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 236 | } SaveStateEntry; |
| 237 | |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 238 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 239 | static QTAILQ_HEAD(savevm_handlers, SaveStateEntry) savevm_handlers = |
| 240 | QTAILQ_HEAD_INITIALIZER(savevm_handlers); |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 241 | static int global_section_id; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 242 | |
Amit Shah | abfd9ce | 2014-06-20 18:56:08 +0530 | [diff] [blame] | 243 | static void dump_vmstate_vmsd(FILE *out_file, |
| 244 | const VMStateDescription *vmsd, int indent, |
| 245 | bool is_subsection); |
| 246 | |
| 247 | static void dump_vmstate_vmsf(FILE *out_file, const VMStateField *field, |
| 248 | int indent) |
| 249 | { |
| 250 | fprintf(out_file, "%*s{\n", indent, ""); |
| 251 | indent += 2; |
| 252 | fprintf(out_file, "%*s\"field\": \"%s\",\n", indent, "", field->name); |
| 253 | fprintf(out_file, "%*s\"version_id\": %d,\n", indent, "", |
| 254 | field->version_id); |
| 255 | fprintf(out_file, "%*s\"field_exists\": %s,\n", indent, "", |
| 256 | field->field_exists ? "true" : "false"); |
| 257 | fprintf(out_file, "%*s\"size\": %zu", indent, "", field->size); |
| 258 | if (field->vmsd != NULL) { |
| 259 | fprintf(out_file, ",\n"); |
| 260 | dump_vmstate_vmsd(out_file, field->vmsd, indent, false); |
| 261 | } |
| 262 | fprintf(out_file, "\n%*s}", indent - 2, ""); |
| 263 | } |
| 264 | |
| 265 | static void dump_vmstate_vmss(FILE *out_file, |
| 266 | const VMStateSubsection *subsection, |
| 267 | int indent) |
| 268 | { |
| 269 | if (subsection->vmsd != NULL) { |
| 270 | dump_vmstate_vmsd(out_file, subsection->vmsd, indent, true); |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | static void dump_vmstate_vmsd(FILE *out_file, |
| 275 | const VMStateDescription *vmsd, int indent, |
| 276 | bool is_subsection) |
| 277 | { |
| 278 | if (is_subsection) { |
| 279 | fprintf(out_file, "%*s{\n", indent, ""); |
| 280 | } else { |
| 281 | fprintf(out_file, "%*s\"%s\": {\n", indent, "", "Description"); |
| 282 | } |
| 283 | indent += 2; |
| 284 | fprintf(out_file, "%*s\"name\": \"%s\",\n", indent, "", vmsd->name); |
| 285 | fprintf(out_file, "%*s\"version_id\": %d,\n", indent, "", |
| 286 | vmsd->version_id); |
| 287 | fprintf(out_file, "%*s\"minimum_version_id\": %d", indent, "", |
| 288 | vmsd->minimum_version_id); |
| 289 | if (vmsd->fields != NULL) { |
| 290 | const VMStateField *field = vmsd->fields; |
| 291 | bool first; |
| 292 | |
| 293 | fprintf(out_file, ",\n%*s\"Fields\": [\n", indent, ""); |
| 294 | first = true; |
| 295 | while (field->name != NULL) { |
| 296 | if (field->flags & VMS_MUST_EXIST) { |
| 297 | /* Ignore VMSTATE_VALIDATE bits; these don't get migrated */ |
| 298 | field++; |
| 299 | continue; |
| 300 | } |
| 301 | if (!first) { |
| 302 | fprintf(out_file, ",\n"); |
| 303 | } |
| 304 | dump_vmstate_vmsf(out_file, field, indent + 2); |
| 305 | field++; |
| 306 | first = false; |
| 307 | } |
| 308 | fprintf(out_file, "\n%*s]", indent, ""); |
| 309 | } |
| 310 | if (vmsd->subsections != NULL) { |
| 311 | const VMStateSubsection *subsection = vmsd->subsections; |
| 312 | bool first; |
| 313 | |
| 314 | fprintf(out_file, ",\n%*s\"Subsections\": [\n", indent, ""); |
| 315 | first = true; |
| 316 | while (subsection->vmsd != NULL) { |
| 317 | if (!first) { |
| 318 | fprintf(out_file, ",\n"); |
| 319 | } |
| 320 | dump_vmstate_vmss(out_file, subsection, indent + 2); |
| 321 | subsection++; |
| 322 | first = false; |
| 323 | } |
| 324 | fprintf(out_file, "\n%*s]", indent, ""); |
| 325 | } |
| 326 | fprintf(out_file, "\n%*s}", indent - 2, ""); |
| 327 | } |
| 328 | |
| 329 | static void dump_machine_type(FILE *out_file) |
| 330 | { |
| 331 | MachineClass *mc; |
| 332 | |
| 333 | mc = MACHINE_GET_CLASS(current_machine); |
| 334 | |
| 335 | fprintf(out_file, " \"vmschkmachine\": {\n"); |
| 336 | fprintf(out_file, " \"Name\": \"%s\"\n", mc->name); |
| 337 | fprintf(out_file, " },\n"); |
| 338 | } |
| 339 | |
| 340 | void dump_vmstate_json_to_file(FILE *out_file) |
| 341 | { |
| 342 | GSList *list, *elt; |
| 343 | bool first; |
| 344 | |
| 345 | fprintf(out_file, "{\n"); |
| 346 | dump_machine_type(out_file); |
| 347 | |
| 348 | first = true; |
| 349 | list = object_class_get_list(TYPE_DEVICE, true); |
| 350 | for (elt = list; elt; elt = elt->next) { |
| 351 | DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data, |
| 352 | TYPE_DEVICE); |
| 353 | const char *name; |
| 354 | int indent = 2; |
| 355 | |
| 356 | if (!dc->vmsd) { |
| 357 | continue; |
| 358 | } |
| 359 | |
| 360 | if (!first) { |
| 361 | fprintf(out_file, ",\n"); |
| 362 | } |
| 363 | name = object_class_get_name(OBJECT_CLASS(dc)); |
| 364 | fprintf(out_file, "%*s\"%s\": {\n", indent, "", name); |
| 365 | indent += 2; |
| 366 | fprintf(out_file, "%*s\"Name\": \"%s\",\n", indent, "", name); |
| 367 | fprintf(out_file, "%*s\"version_id\": %d,\n", indent, "", |
| 368 | dc->vmsd->version_id); |
| 369 | fprintf(out_file, "%*s\"minimum_version_id\": %d,\n", indent, "", |
| 370 | dc->vmsd->minimum_version_id); |
| 371 | |
| 372 | dump_vmstate_vmsd(out_file, dc->vmsd, indent, false); |
| 373 | |
| 374 | fprintf(out_file, "\n%*s}", indent - 2, ""); |
| 375 | first = false; |
| 376 | } |
| 377 | fprintf(out_file, "\n}\n"); |
| 378 | fclose(out_file); |
| 379 | } |
| 380 | |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 381 | static int calculate_new_instance_id(const char *idstr) |
| 382 | { |
| 383 | SaveStateEntry *se; |
| 384 | int instance_id = 0; |
| 385 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 386 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 387 | if (strcmp(idstr, se->idstr) == 0 |
| 388 | && instance_id <= se->instance_id) { |
| 389 | instance_id = se->instance_id + 1; |
| 390 | } |
| 391 | } |
| 392 | return instance_id; |
| 393 | } |
| 394 | |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 395 | static int calculate_compat_instance_id(const char *idstr) |
| 396 | { |
| 397 | SaveStateEntry *se; |
| 398 | int instance_id = 0; |
| 399 | |
| 400 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 401 | if (!se->compat) { |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 402 | continue; |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 403 | } |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 404 | |
| 405 | if (strcmp(idstr, se->compat->idstr) == 0 |
| 406 | && instance_id <= se->compat->instance_id) { |
| 407 | instance_id = se->compat->instance_id + 1; |
| 408 | } |
| 409 | } |
| 410 | return instance_id; |
| 411 | } |
| 412 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 413 | /* TODO: Individual devices generally have very little idea about the rest |
| 414 | of the system, so instance_id should be removed/replaced. |
| 415 | Meanwhile pass -1 as instance_id if you do not already have a clearly |
| 416 | distinguishing id for all instances of your device class. */ |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 417 | int register_savevm_live(DeviceState *dev, |
| 418 | const char *idstr, |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 419 | int instance_id, |
| 420 | int version_id, |
Juan Quintela | 7908c78 | 2012-06-26 18:46:10 +0200 | [diff] [blame] | 421 | SaveVMHandlers *ops, |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 422 | void *opaque) |
| 423 | { |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 424 | SaveStateEntry *se; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 425 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 426 | se = g_malloc0(sizeof(SaveStateEntry)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 427 | se->version_id = version_id; |
| 428 | se->section_id = global_section_id++; |
Juan Quintela | 7908c78 | 2012-06-26 18:46:10 +0200 | [diff] [blame] | 429 | se->ops = ops; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 430 | se->opaque = opaque; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 431 | se->vmsd = NULL; |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 432 | /* if this is a live_savem then set is_ram */ |
Juan Quintela | 16310a3 | 2012-06-28 15:31:37 +0200 | [diff] [blame] | 433 | if (ops->save_live_setup != NULL) { |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 434 | se->is_ram = 1; |
| 435 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 436 | |
Anthony Liguori | 09e5ab6 | 2012-02-03 12:28:43 -0600 | [diff] [blame] | 437 | if (dev) { |
| 438 | char *id = qdev_get_dev_path(dev); |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 439 | if (id) { |
| 440 | pstrcpy(se->idstr, sizeof(se->idstr), id); |
| 441 | pstrcat(se->idstr, sizeof(se->idstr), "/"); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 442 | g_free(id); |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 443 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 444 | se->compat = g_malloc0(sizeof(CompatEntry)); |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 445 | pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), idstr); |
| 446 | se->compat->instance_id = instance_id == -1 ? |
| 447 | calculate_compat_instance_id(idstr) : instance_id; |
| 448 | instance_id = -1; |
| 449 | } |
| 450 | } |
| 451 | pstrcat(se->idstr, sizeof(se->idstr), idstr); |
| 452 | |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 453 | if (instance_id == -1) { |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 454 | se->instance_id = calculate_new_instance_id(se->idstr); |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 455 | } else { |
| 456 | se->instance_id = instance_id; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 457 | } |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 458 | assert(!se->compat || se->instance_id == 0); |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 459 | /* add at the end of list */ |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 460 | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 461 | return 0; |
| 462 | } |
| 463 | |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 464 | int register_savevm(DeviceState *dev, |
| 465 | const char *idstr, |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 466 | int instance_id, |
| 467 | int version_id, |
| 468 | SaveStateHandler *save_state, |
| 469 | LoadStateHandler *load_state, |
| 470 | void *opaque) |
| 471 | { |
Juan Quintela | 7908c78 | 2012-06-26 18:46:10 +0200 | [diff] [blame] | 472 | SaveVMHandlers *ops = g_malloc0(sizeof(SaveVMHandlers)); |
| 473 | ops->save_state = save_state; |
| 474 | ops->load_state = load_state; |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 475 | return register_savevm_live(dev, idstr, instance_id, version_id, |
Juan Quintela | 7908c78 | 2012-06-26 18:46:10 +0200 | [diff] [blame] | 476 | ops, opaque); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 477 | } |
| 478 | |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 479 | void unregister_savevm(DeviceState *dev, const char *idstr, void *opaque) |
aliguori | 41bd13a | 2009-04-17 17:10:59 +0000 | [diff] [blame] | 480 | { |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 481 | SaveStateEntry *se, *new_se; |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 482 | char id[256] = ""; |
| 483 | |
Anthony Liguori | 09e5ab6 | 2012-02-03 12:28:43 -0600 | [diff] [blame] | 484 | if (dev) { |
| 485 | char *path = qdev_get_dev_path(dev); |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 486 | if (path) { |
| 487 | pstrcpy(id, sizeof(id), path); |
| 488 | pstrcat(id, sizeof(id), "/"); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 489 | g_free(path); |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 490 | } |
| 491 | } |
| 492 | pstrcat(id, sizeof(id), idstr); |
aliguori | 41bd13a | 2009-04-17 17:10:59 +0000 | [diff] [blame] | 493 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 494 | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 495 | if (strcmp(se->idstr, id) == 0 && se->opaque == opaque) { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 496 | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
Alex Williamson | 69e58af | 2010-07-21 08:35:31 -0600 | [diff] [blame] | 497 | if (se->compat) { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 498 | g_free(se->compat); |
Alex Williamson | 69e58af | 2010-07-21 08:35:31 -0600 | [diff] [blame] | 499 | } |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 500 | g_free(se->ops); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 501 | g_free(se); |
aliguori | 41bd13a | 2009-04-17 17:10:59 +0000 | [diff] [blame] | 502 | } |
aliguori | 41bd13a | 2009-04-17 17:10:59 +0000 | [diff] [blame] | 503 | } |
| 504 | } |
| 505 | |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 506 | int vmstate_register_with_alias_id(DeviceState *dev, int instance_id, |
Jan Kiszka | 4d2ffa0 | 2010-05-15 13:32:40 +0200 | [diff] [blame] | 507 | const VMStateDescription *vmsd, |
| 508 | void *opaque, int alias_id, |
| 509 | int required_for_version) |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 510 | { |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 511 | SaveStateEntry *se; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 512 | |
Jan Kiszka | 4d2ffa0 | 2010-05-15 13:32:40 +0200 | [diff] [blame] | 513 | /* If this triggers, alias support can be dropped for the vmsd. */ |
| 514 | assert(alias_id == -1 || required_for_version >= vmsd->minimum_version_id); |
| 515 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 516 | se = g_malloc0(sizeof(SaveStateEntry)); |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 517 | se->version_id = vmsd->version_id; |
| 518 | se->section_id = global_section_id++; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 519 | se->opaque = opaque; |
| 520 | se->vmsd = vmsd; |
Jan Kiszka | 4d2ffa0 | 2010-05-15 13:32:40 +0200 | [diff] [blame] | 521 | se->alias_id = alias_id; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 522 | |
Anthony Liguori | 09e5ab6 | 2012-02-03 12:28:43 -0600 | [diff] [blame] | 523 | if (dev) { |
| 524 | char *id = qdev_get_dev_path(dev); |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 525 | if (id) { |
| 526 | pstrcpy(se->idstr, sizeof(se->idstr), id); |
| 527 | pstrcat(se->idstr, sizeof(se->idstr), "/"); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 528 | g_free(id); |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 529 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 530 | se->compat = g_malloc0(sizeof(CompatEntry)); |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 531 | pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), vmsd->name); |
| 532 | se->compat->instance_id = instance_id == -1 ? |
| 533 | calculate_compat_instance_id(vmsd->name) : instance_id; |
| 534 | instance_id = -1; |
| 535 | } |
| 536 | } |
| 537 | pstrcat(se->idstr, sizeof(se->idstr), vmsd->name); |
| 538 | |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 539 | if (instance_id == -1) { |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 540 | se->instance_id = calculate_new_instance_id(se->idstr); |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 541 | } else { |
| 542 | se->instance_id = instance_id; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 543 | } |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 544 | assert(!se->compat || se->instance_id == 0); |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 545 | /* add at the end of list */ |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 546 | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 547 | return 0; |
| 548 | } |
| 549 | |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 550 | void vmstate_unregister(DeviceState *dev, const VMStateDescription *vmsd, |
| 551 | void *opaque) |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 552 | { |
Juan Quintela | 1eb7538 | 2009-09-10 03:04:29 +0200 | [diff] [blame] | 553 | SaveStateEntry *se, *new_se; |
| 554 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 555 | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
Juan Quintela | 1eb7538 | 2009-09-10 03:04:29 +0200 | [diff] [blame] | 556 | if (se->vmsd == vmsd && se->opaque == opaque) { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 557 | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
Alex Williamson | 69e58af | 2010-07-21 08:35:31 -0600 | [diff] [blame] | 558 | if (se->compat) { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 559 | g_free(se->compat); |
Alex Williamson | 69e58af | 2010-07-21 08:35:31 -0600 | [diff] [blame] | 560 | } |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 561 | g_free(se); |
Juan Quintela | 1eb7538 | 2009-09-10 03:04:29 +0200 | [diff] [blame] | 562 | } |
| 563 | } |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 564 | } |
| 565 | |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 566 | static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id) |
| 567 | { |
Alexey Kardashevskiy | 9013dca | 2014-03-11 10:42:29 +1100 | [diff] [blame] | 568 | trace_vmstate_load(se->idstr, se->vmsd ? se->vmsd->name : "(old)"); |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 569 | if (!se->vmsd) { /* Old style */ |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 570 | return se->ops->load_state(f, se->opaque, version_id); |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 571 | } |
| 572 | return vmstate_load_state(f, se->vmsd, se->opaque, version_id); |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 573 | } |
| 574 | |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 575 | static void vmstate_save_old_style(QEMUFile *f, SaveStateEntry *se, QJSON *vmdesc) |
| 576 | { |
| 577 | int64_t old_offset, size; |
| 578 | |
| 579 | old_offset = qemu_ftell_fast(f); |
| 580 | se->ops->save_state(f, se->opaque); |
| 581 | size = qemu_ftell_fast(f) - old_offset; |
| 582 | |
| 583 | if (vmdesc) { |
| 584 | json_prop_int(vmdesc, "size", size); |
| 585 | json_start_array(vmdesc, "fields"); |
| 586 | json_start_object(vmdesc, NULL); |
| 587 | json_prop_str(vmdesc, "name", "data"); |
| 588 | json_prop_int(vmdesc, "size", size); |
| 589 | json_prop_str(vmdesc, "type", "buffer"); |
| 590 | json_end_object(vmdesc); |
| 591 | json_end_array(vmdesc); |
| 592 | } |
| 593 | } |
| 594 | |
| 595 | static void vmstate_save(QEMUFile *f, SaveStateEntry *se, QJSON *vmdesc) |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 596 | { |
Alexey Kardashevskiy | 9013dca | 2014-03-11 10:42:29 +1100 | [diff] [blame] | 597 | trace_vmstate_save(se->idstr, se->vmsd ? se->vmsd->name : "(old)"); |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 598 | if (!se->vmsd) { |
| 599 | vmstate_save_old_style(f, se, vmdesc); |
Alex Williamson | dc91212 | 2011-01-11 14:39:43 -0700 | [diff] [blame] | 600 | return; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 601 | } |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 602 | vmstate_save_state(f, se->vmsd, se->opaque, vmdesc); |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 603 | } |
| 604 | |
Luiz Capitulino | e1c37d0 | 2011-12-05 14:48:01 -0200 | [diff] [blame] | 605 | bool qemu_savevm_state_blocked(Error **errp) |
Alex Williamson | dc91212 | 2011-01-11 14:39:43 -0700 | [diff] [blame] | 606 | { |
| 607 | SaveStateEntry *se; |
| 608 | |
| 609 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
Marcelo Tosatti | 7d854c4 | 2014-05-14 16:30:08 -0300 | [diff] [blame] | 610 | if (se->vmsd && se->vmsd->unmigratable) { |
Cole Robinson | f231b88 | 2014-03-21 19:42:26 -0400 | [diff] [blame] | 611 | error_setg(errp, "State blocked by non-migratable device '%s'", |
| 612 | se->idstr); |
Alex Williamson | dc91212 | 2011-01-11 14:39:43 -0700 | [diff] [blame] | 613 | return true; |
| 614 | } |
| 615 | } |
| 616 | return false; |
| 617 | } |
| 618 | |
Paolo Bonzini | 47c8c17 | 2013-02-22 17:36:13 +0100 | [diff] [blame] | 619 | void qemu_savevm_state_begin(QEMUFile *f, |
| 620 | const MigrationParams *params) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 621 | { |
| 622 | SaveStateEntry *se; |
Juan Quintela | 3934638 | 2011-09-22 11:02:14 +0200 | [diff] [blame] | 623 | int ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 624 | |
Alexey Kardashevskiy | 9013dca | 2014-03-11 10:42:29 +1100 | [diff] [blame] | 625 | trace_savevm_state_begin(); |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 626 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 627 | if (!se->ops || !se->ops->set_params) { |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 628 | continue; |
Isaku Yamahata | 6607ae2 | 2012-06-19 18:43:09 +0300 | [diff] [blame] | 629 | } |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 630 | se->ops->set_params(params, se->opaque); |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 631 | } |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 632 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 633 | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); |
| 634 | qemu_put_be32(f, QEMU_VM_FILE_VERSION); |
| 635 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 636 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 637 | int len; |
| 638 | |
Juan Quintela | d1315aa | 2012-06-28 15:11:57 +0200 | [diff] [blame] | 639 | if (!se->ops || !se->ops->save_live_setup) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 640 | continue; |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 641 | } |
Juan Quintela | 6bd6878 | 2012-06-27 10:59:15 +0200 | [diff] [blame] | 642 | if (se->ops && se->ops->is_active) { |
| 643 | if (!se->ops->is_active(se->opaque)) { |
| 644 | continue; |
| 645 | } |
| 646 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 647 | /* Section type */ |
| 648 | qemu_put_byte(f, QEMU_VM_SECTION_START); |
| 649 | qemu_put_be32(f, se->section_id); |
| 650 | |
| 651 | /* ID string */ |
| 652 | len = strlen(se->idstr); |
| 653 | qemu_put_byte(f, len); |
| 654 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
| 655 | |
| 656 | qemu_put_be32(f, se->instance_id); |
| 657 | qemu_put_be32(f, se->version_id); |
| 658 | |
Juan Quintela | d1315aa | 2012-06-28 15:11:57 +0200 | [diff] [blame] | 659 | ret = se->ops->save_live_setup(f, se->opaque); |
Juan Quintela | 2975725 | 2011-10-19 15:22:18 +0200 | [diff] [blame] | 660 | if (ret < 0) { |
Paolo Bonzini | 47c8c17 | 2013-02-22 17:36:13 +0100 | [diff] [blame] | 661 | qemu_file_set_error(f, ret); |
| 662 | break; |
Juan Quintela | 2975725 | 2011-10-19 15:22:18 +0200 | [diff] [blame] | 663 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 664 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 665 | } |
| 666 | |
Juan Quintela | 3934638 | 2011-09-22 11:02:14 +0200 | [diff] [blame] | 667 | /* |
Dong Xu Wang | 07f3507 | 2011-11-22 18:06:26 +0800 | [diff] [blame] | 668 | * this function has three return values: |
Juan Quintela | 3934638 | 2011-09-22 11:02:14 +0200 | [diff] [blame] | 669 | * negative: there was one error, and we have -errno. |
| 670 | * 0 : We haven't finished, caller have to go again |
| 671 | * 1 : We have finished, we can go to complete phase |
| 672 | */ |
Luiz Capitulino | 539de12 | 2011-12-05 14:06:56 -0200 | [diff] [blame] | 673 | int qemu_savevm_state_iterate(QEMUFile *f) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 674 | { |
| 675 | SaveStateEntry *se; |
| 676 | int ret = 1; |
| 677 | |
Alexey Kardashevskiy | 9013dca | 2014-03-11 10:42:29 +1100 | [diff] [blame] | 678 | trace_savevm_state_iterate(); |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 679 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
Juan Quintela | 16310a3 | 2012-06-28 15:31:37 +0200 | [diff] [blame] | 680 | if (!se->ops || !se->ops->save_live_iterate) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 681 | continue; |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 682 | } |
Juan Quintela | 6bd6878 | 2012-06-27 10:59:15 +0200 | [diff] [blame] | 683 | if (se->ops && se->ops->is_active) { |
| 684 | if (!se->ops->is_active(se->opaque)) { |
| 685 | continue; |
| 686 | } |
| 687 | } |
Juan Quintela | aac844e | 2012-05-22 00:38:26 +0200 | [diff] [blame] | 688 | if (qemu_file_rate_limit(f)) { |
| 689 | return 0; |
| 690 | } |
Alexey Kardashevskiy | 464400f | 2014-03-07 01:33:37 +0530 | [diff] [blame] | 691 | trace_savevm_section_start(se->idstr, se->section_id); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 692 | /* Section type */ |
| 693 | qemu_put_byte(f, QEMU_VM_SECTION_PART); |
| 694 | qemu_put_be32(f, se->section_id); |
| 695 | |
Juan Quintela | 16310a3 | 2012-06-28 15:31:37 +0200 | [diff] [blame] | 696 | ret = se->ops->save_live_iterate(f, se->opaque); |
Dr. David Alan Gilbert | a5df2a0 | 2015-01-21 10:14:48 +0000 | [diff] [blame] | 697 | trace_savevm_section_end(se->idstr, se->section_id, ret); |
Juan Quintela | 517a13c | 2012-05-21 23:46:44 +0200 | [diff] [blame] | 698 | |
Paolo Bonzini | 47c8c17 | 2013-02-22 17:36:13 +0100 | [diff] [blame] | 699 | if (ret < 0) { |
| 700 | qemu_file_set_error(f, ret); |
| 701 | } |
Juan Quintela | 2975725 | 2011-10-19 15:22:18 +0200 | [diff] [blame] | 702 | if (ret <= 0) { |
Jan Kiszka | 90697be | 2009-12-01 15:19:55 +0100 | [diff] [blame] | 703 | /* Do not proceed to the next vmstate before this one reported |
| 704 | completion of the current stage. This serializes the migration |
| 705 | and reduces the probability that a faster changing state is |
| 706 | synchronized over and over again. */ |
| 707 | break; |
| 708 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 709 | } |
Juan Quintela | 3934638 | 2011-09-22 11:02:14 +0200 | [diff] [blame] | 710 | return ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 711 | } |
| 712 | |
Paolo Bonzini | 47c8c17 | 2013-02-22 17:36:13 +0100 | [diff] [blame] | 713 | void qemu_savevm_state_complete(QEMUFile *f) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 714 | { |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 715 | QJSON *vmdesc; |
| 716 | int vmdesc_len; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 717 | SaveStateEntry *se; |
Juan Quintela | 2975725 | 2011-10-19 15:22:18 +0200 | [diff] [blame] | 718 | int ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 719 | |
Alexey Kardashevskiy | 9013dca | 2014-03-11 10:42:29 +1100 | [diff] [blame] | 720 | trace_savevm_state_complete(); |
| 721 | |
Jan Kiszka | ea375f9 | 2010-03-01 19:10:30 +0100 | [diff] [blame] | 722 | cpu_synchronize_all_states(); |
| 723 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 724 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
Juan Quintela | 16310a3 | 2012-06-28 15:31:37 +0200 | [diff] [blame] | 725 | if (!se->ops || !se->ops->save_live_complete) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 726 | continue; |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 727 | } |
Juan Quintela | 6bd6878 | 2012-06-27 10:59:15 +0200 | [diff] [blame] | 728 | if (se->ops && se->ops->is_active) { |
| 729 | if (!se->ops->is_active(se->opaque)) { |
| 730 | continue; |
| 731 | } |
| 732 | } |
Alexey Kardashevskiy | 464400f | 2014-03-07 01:33:37 +0530 | [diff] [blame] | 733 | trace_savevm_section_start(se->idstr, se->section_id); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 734 | /* Section type */ |
| 735 | qemu_put_byte(f, QEMU_VM_SECTION_END); |
| 736 | qemu_put_be32(f, se->section_id); |
| 737 | |
Juan Quintela | 16310a3 | 2012-06-28 15:31:37 +0200 | [diff] [blame] | 738 | ret = se->ops->save_live_complete(f, se->opaque); |
Dr. David Alan Gilbert | a5df2a0 | 2015-01-21 10:14:48 +0000 | [diff] [blame] | 739 | trace_savevm_section_end(se->idstr, se->section_id, ret); |
Juan Quintela | 2975725 | 2011-10-19 15:22:18 +0200 | [diff] [blame] | 740 | if (ret < 0) { |
Paolo Bonzini | 47c8c17 | 2013-02-22 17:36:13 +0100 | [diff] [blame] | 741 | qemu_file_set_error(f, ret); |
| 742 | return; |
Juan Quintela | 2975725 | 2011-10-19 15:22:18 +0200 | [diff] [blame] | 743 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 744 | } |
| 745 | |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 746 | vmdesc = qjson_new(); |
| 747 | json_prop_int(vmdesc, "page_size", TARGET_PAGE_SIZE); |
| 748 | json_start_array(vmdesc, "devices"); |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 749 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 750 | int len; |
| 751 | |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 752 | if ((!se->ops || !se->ops->save_state) && !se->vmsd) { |
Eduardo Habkost | 5cecf41 | 2013-11-28 12:01:12 -0200 | [diff] [blame] | 753 | continue; |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 754 | } |
Alexey Kardashevskiy | 464400f | 2014-03-07 01:33:37 +0530 | [diff] [blame] | 755 | trace_savevm_section_start(se->idstr, se->section_id); |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 756 | |
| 757 | json_start_object(vmdesc, NULL); |
| 758 | json_prop_str(vmdesc, "name", se->idstr); |
| 759 | json_prop_int(vmdesc, "instance_id", se->instance_id); |
| 760 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 761 | /* Section type */ |
| 762 | qemu_put_byte(f, QEMU_VM_SECTION_FULL); |
| 763 | qemu_put_be32(f, se->section_id); |
| 764 | |
| 765 | /* ID string */ |
| 766 | len = strlen(se->idstr); |
| 767 | qemu_put_byte(f, len); |
| 768 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
| 769 | |
| 770 | qemu_put_be32(f, se->instance_id); |
| 771 | qemu_put_be32(f, se->version_id); |
| 772 | |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 773 | vmstate_save(f, se, vmdesc); |
| 774 | |
| 775 | json_end_object(vmdesc); |
Dr. David Alan Gilbert | a5df2a0 | 2015-01-21 10:14:48 +0000 | [diff] [blame] | 776 | trace_savevm_section_end(se->idstr, se->section_id, 0); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 777 | } |
| 778 | |
| 779 | qemu_put_byte(f, QEMU_VM_EOF); |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 780 | |
| 781 | json_end_array(vmdesc); |
| 782 | qjson_finish(vmdesc); |
| 783 | vmdesc_len = strlen(qjson_get_str(vmdesc)); |
| 784 | |
| 785 | qemu_put_byte(f, QEMU_VM_VMDESCRIPTION); |
| 786 | qemu_put_be32(f, vmdesc_len); |
| 787 | qemu_put_buffer(f, (uint8_t *)qjson_get_str(vmdesc), vmdesc_len); |
| 788 | object_unref(OBJECT(vmdesc)); |
| 789 | |
Paolo Bonzini | edaae61 | 2013-02-22 17:36:29 +0100 | [diff] [blame] | 790 | qemu_fflush(f); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 791 | } |
| 792 | |
Juan Quintela | e4ed154 | 2012-09-21 11:18:18 +0200 | [diff] [blame] | 793 | uint64_t qemu_savevm_state_pending(QEMUFile *f, uint64_t max_size) |
| 794 | { |
| 795 | SaveStateEntry *se; |
| 796 | uint64_t ret = 0; |
| 797 | |
| 798 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
| 799 | if (!se->ops || !se->ops->save_live_pending) { |
| 800 | continue; |
| 801 | } |
| 802 | if (se->ops && se->ops->is_active) { |
| 803 | if (!se->ops->is_active(se->opaque)) { |
| 804 | continue; |
| 805 | } |
| 806 | } |
| 807 | ret += se->ops->save_live_pending(f, se->opaque, max_size); |
| 808 | } |
| 809 | return ret; |
| 810 | } |
| 811 | |
Juan Quintela | 6522773 | 2013-01-14 14:14:42 +0100 | [diff] [blame] | 812 | void qemu_savevm_state_cancel(void) |
Jan Kiszka | 4ec7fcc | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 813 | { |
| 814 | SaveStateEntry *se; |
| 815 | |
Alexey Kardashevskiy | 9013dca | 2014-03-11 10:42:29 +1100 | [diff] [blame] | 816 | trace_savevm_state_cancel(); |
Jan Kiszka | 4ec7fcc | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 817 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
Juan Quintela | 9b5bfab | 2012-06-26 19:26:41 +0200 | [diff] [blame] | 818 | if (se->ops && se->ops->cancel) { |
| 819 | se->ops->cancel(se->opaque); |
Jan Kiszka | 4ec7fcc | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 820 | } |
| 821 | } |
| 822 | } |
| 823 | |
Luiz Capitulino | e1c37d0 | 2011-12-05 14:48:01 -0200 | [diff] [blame] | 824 | static int qemu_savevm_state(QEMUFile *f) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 825 | { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 826 | int ret; |
Isaku Yamahata | 6607ae2 | 2012-06-19 18:43:09 +0300 | [diff] [blame] | 827 | MigrationParams params = { |
| 828 | .blk = 0, |
| 829 | .shared = 0 |
| 830 | }; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 831 | |
Luiz Capitulino | e1c37d0 | 2011-12-05 14:48:01 -0200 | [diff] [blame] | 832 | if (qemu_savevm_state_blocked(NULL)) { |
Paolo Bonzini | 04943eb | 2013-02-22 17:36:10 +0100 | [diff] [blame] | 833 | return -EINVAL; |
Alex Williamson | dc91212 | 2011-01-11 14:39:43 -0700 | [diff] [blame] | 834 | } |
| 835 | |
Paolo Bonzini | 9b09503 | 2013-02-22 17:36:28 +0100 | [diff] [blame] | 836 | qemu_mutex_unlock_iothread(); |
Paolo Bonzini | 47c8c17 | 2013-02-22 17:36:13 +0100 | [diff] [blame] | 837 | qemu_savevm_state_begin(f, ¶ms); |
Paolo Bonzini | 9b09503 | 2013-02-22 17:36:28 +0100 | [diff] [blame] | 838 | qemu_mutex_lock_iothread(); |
| 839 | |
Paolo Bonzini | 47c8c17 | 2013-02-22 17:36:13 +0100 | [diff] [blame] | 840 | while (qemu_file_get_error(f) == 0) { |
| 841 | if (qemu_savevm_state_iterate(f) > 0) { |
| 842 | break; |
| 843 | } |
| 844 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 845 | |
Paolo Bonzini | 47c8c17 | 2013-02-22 17:36:13 +0100 | [diff] [blame] | 846 | ret = qemu_file_get_error(f); |
Juan Quintela | 3934638 | 2011-09-22 11:02:14 +0200 | [diff] [blame] | 847 | if (ret == 0) { |
Paolo Bonzini | 47c8c17 | 2013-02-22 17:36:13 +0100 | [diff] [blame] | 848 | qemu_savevm_state_complete(f); |
Juan Quintela | 624b9cc | 2011-10-05 01:02:52 +0200 | [diff] [blame] | 849 | ret = qemu_file_get_error(f); |
Juan Quintela | 3934638 | 2011-09-22 11:02:14 +0200 | [diff] [blame] | 850 | } |
Paolo Bonzini | 04943eb | 2013-02-22 17:36:10 +0100 | [diff] [blame] | 851 | if (ret != 0) { |
| 852 | qemu_savevm_state_cancel(); |
| 853 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 854 | return ret; |
| 855 | } |
| 856 | |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 857 | static int qemu_save_device_state(QEMUFile *f) |
| 858 | { |
| 859 | SaveStateEntry *se; |
| 860 | |
| 861 | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); |
| 862 | qemu_put_be32(f, QEMU_VM_FILE_VERSION); |
| 863 | |
| 864 | cpu_synchronize_all_states(); |
| 865 | |
| 866 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
| 867 | int len; |
| 868 | |
| 869 | if (se->is_ram) { |
| 870 | continue; |
| 871 | } |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 872 | if ((!se->ops || !se->ops->save_state) && !se->vmsd) { |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 873 | continue; |
| 874 | } |
| 875 | |
| 876 | /* Section type */ |
| 877 | qemu_put_byte(f, QEMU_VM_SECTION_FULL); |
| 878 | qemu_put_be32(f, se->section_id); |
| 879 | |
| 880 | /* ID string */ |
| 881 | len = strlen(se->idstr); |
| 882 | qemu_put_byte(f, len); |
| 883 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
| 884 | |
| 885 | qemu_put_be32(f, se->instance_id); |
| 886 | qemu_put_be32(f, se->version_id); |
| 887 | |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 888 | vmstate_save(f, se, NULL); |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 889 | } |
| 890 | |
| 891 | qemu_put_byte(f, QEMU_VM_EOF); |
| 892 | |
| 893 | return qemu_file_get_error(f); |
| 894 | } |
| 895 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 896 | static SaveStateEntry *find_se(const char *idstr, int instance_id) |
| 897 | { |
| 898 | SaveStateEntry *se; |
| 899 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 900 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 901 | if (!strcmp(se->idstr, idstr) && |
Jan Kiszka | 4d2ffa0 | 2010-05-15 13:32:40 +0200 | [diff] [blame] | 902 | (instance_id == se->instance_id || |
| 903 | instance_id == se->alias_id)) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 904 | return se; |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 905 | /* Migrating from an older version? */ |
| 906 | if (strstr(se->idstr, idstr) && se->compat) { |
| 907 | if (!strcmp(se->compat->idstr, idstr) && |
| 908 | (instance_id == se->compat->instance_id || |
| 909 | instance_id == se->alias_id)) |
| 910 | return se; |
| 911 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 912 | } |
| 913 | return NULL; |
| 914 | } |
| 915 | |
| 916 | typedef struct LoadStateEntry { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 917 | QLIST_ENTRY(LoadStateEntry) entry; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 918 | SaveStateEntry *se; |
| 919 | int section_id; |
| 920 | int version_id; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 921 | } LoadStateEntry; |
| 922 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 923 | int qemu_loadvm_state(QEMUFile *f) |
| 924 | { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 925 | QLIST_HEAD(, LoadStateEntry) loadvm_handlers = |
| 926 | QLIST_HEAD_INITIALIZER(loadvm_handlers); |
Juan Quintela | f4dbb8d | 2009-09-01 02:12:33 +0200 | [diff] [blame] | 927 | LoadStateEntry *le, *new_le; |
Dr. David Alan Gilbert | 0457d07 | 2015-01-21 10:14:49 +0000 | [diff] [blame] | 928 | Error *local_err = NULL; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 929 | uint8_t section_type; |
| 930 | unsigned int v; |
| 931 | int ret; |
| 932 | |
Dr. David Alan Gilbert | 0457d07 | 2015-01-21 10:14:49 +0000 | [diff] [blame] | 933 | if (qemu_savevm_state_blocked(&local_err)) { |
| 934 | error_report("%s", error_get_pretty(local_err)); |
| 935 | error_free(local_err); |
Alex Williamson | dc91212 | 2011-01-11 14:39:43 -0700 | [diff] [blame] | 936 | return -EINVAL; |
| 937 | } |
| 938 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 939 | v = qemu_get_be32(f); |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 940 | if (v != QEMU_VM_FILE_MAGIC) { |
Dr. David Alan Gilbert | 0457d07 | 2015-01-21 10:14:49 +0000 | [diff] [blame] | 941 | error_report("Not a migration stream"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 942 | return -EINVAL; |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 943 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 944 | |
| 945 | v = qemu_get_be32(f); |
Juan Quintela | bbfe140 | 2009-09-10 03:04:24 +0200 | [diff] [blame] | 946 | if (v == QEMU_VM_FILE_VERSION_COMPAT) { |
Dr. David Alan Gilbert | 6a64b64 | 2015-01-21 10:14:47 +0000 | [diff] [blame] | 947 | error_report("SaveVM v2 format is obsolete and don't work anymore"); |
Juan Quintela | bbfe140 | 2009-09-10 03:04:24 +0200 | [diff] [blame] | 948 | return -ENOTSUP; |
| 949 | } |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 950 | if (v != QEMU_VM_FILE_VERSION) { |
Dr. David Alan Gilbert | 0457d07 | 2015-01-21 10:14:49 +0000 | [diff] [blame] | 951 | error_report("Unsupported migration stream version"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 952 | return -ENOTSUP; |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 953 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 954 | |
| 955 | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) { |
| 956 | uint32_t instance_id, version_id, section_id; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 957 | SaveStateEntry *se; |
| 958 | char idstr[257]; |
| 959 | int len; |
| 960 | |
Dr. David Alan Gilbert | a5df2a0 | 2015-01-21 10:14:48 +0000 | [diff] [blame] | 961 | trace_qemu_loadvm_state_section(section_type); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 962 | switch (section_type) { |
| 963 | case QEMU_VM_SECTION_START: |
| 964 | case QEMU_VM_SECTION_FULL: |
| 965 | /* Read section start */ |
| 966 | section_id = qemu_get_be32(f); |
| 967 | len = qemu_get_byte(f); |
| 968 | qemu_get_buffer(f, (uint8_t *)idstr, len); |
| 969 | idstr[len] = 0; |
| 970 | instance_id = qemu_get_be32(f); |
| 971 | version_id = qemu_get_be32(f); |
| 972 | |
Dr. David Alan Gilbert | a5df2a0 | 2015-01-21 10:14:48 +0000 | [diff] [blame] | 973 | trace_qemu_loadvm_state_section_startfull(section_id, idstr, |
| 974 | instance_id, version_id); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 975 | /* Find savevm section */ |
| 976 | se = find_se(idstr, instance_id); |
| 977 | if (se == NULL) { |
Dr. David Alan Gilbert | 6a64b64 | 2015-01-21 10:14:47 +0000 | [diff] [blame] | 978 | error_report("Unknown savevm section or instance '%s' %d", |
| 979 | idstr, instance_id); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 980 | ret = -EINVAL; |
| 981 | goto out; |
| 982 | } |
| 983 | |
| 984 | /* Validate version */ |
| 985 | if (version_id > se->version_id) { |
Dr. David Alan Gilbert | 6a64b64 | 2015-01-21 10:14:47 +0000 | [diff] [blame] | 986 | error_report("savevm: unsupported version %d for '%s' v%d", |
| 987 | version_id, idstr, se->version_id); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 988 | ret = -EINVAL; |
| 989 | goto out; |
| 990 | } |
| 991 | |
| 992 | /* Add entry */ |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 993 | le = g_malloc0(sizeof(*le)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 994 | |
| 995 | le->se = se; |
| 996 | le->section_id = section_id; |
| 997 | le->version_id = version_id; |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 998 | QLIST_INSERT_HEAD(&loadvm_handlers, le, entry); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 999 | |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 1000 | ret = vmstate_load(f, le->se, le->version_id); |
Juan Quintela | b5a22e4 | 2009-08-20 19:42:23 +0200 | [diff] [blame] | 1001 | if (ret < 0) { |
Dr. David Alan Gilbert | 6a64b64 | 2015-01-21 10:14:47 +0000 | [diff] [blame] | 1002 | error_report("error while loading state for instance 0x%x of" |
| 1003 | " device '%s'", instance_id, idstr); |
Juan Quintela | b5a22e4 | 2009-08-20 19:42:23 +0200 | [diff] [blame] | 1004 | goto out; |
| 1005 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1006 | break; |
| 1007 | case QEMU_VM_SECTION_PART: |
| 1008 | case QEMU_VM_SECTION_END: |
| 1009 | section_id = qemu_get_be32(f); |
| 1010 | |
Dr. David Alan Gilbert | a5df2a0 | 2015-01-21 10:14:48 +0000 | [diff] [blame] | 1011 | trace_qemu_loadvm_state_section_partend(section_id); |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1012 | QLIST_FOREACH(le, &loadvm_handlers, entry) { |
Juan Quintela | f4dbb8d | 2009-09-01 02:12:33 +0200 | [diff] [blame] | 1013 | if (le->section_id == section_id) { |
| 1014 | break; |
| 1015 | } |
| 1016 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1017 | if (le == NULL) { |
Dr. David Alan Gilbert | 6a64b64 | 2015-01-21 10:14:47 +0000 | [diff] [blame] | 1018 | error_report("Unknown savevm section %d", section_id); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1019 | ret = -EINVAL; |
| 1020 | goto out; |
| 1021 | } |
| 1022 | |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 1023 | ret = vmstate_load(f, le->se, le->version_id); |
Juan Quintela | b5a22e4 | 2009-08-20 19:42:23 +0200 | [diff] [blame] | 1024 | if (ret < 0) { |
Dr. David Alan Gilbert | 6a64b64 | 2015-01-21 10:14:47 +0000 | [diff] [blame] | 1025 | error_report("error while loading state section id %d(%s)", |
| 1026 | section_id, le->se->idstr); |
Juan Quintela | b5a22e4 | 2009-08-20 19:42:23 +0200 | [diff] [blame] | 1027 | goto out; |
| 1028 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1029 | break; |
| 1030 | default: |
Dr. David Alan Gilbert | 6a64b64 | 2015-01-21 10:14:47 +0000 | [diff] [blame] | 1031 | error_report("Unknown savevm section type %d", section_type); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1032 | ret = -EINVAL; |
| 1033 | goto out; |
| 1034 | } |
| 1035 | } |
| 1036 | |
Jan Kiszka | ea375f9 | 2010-03-01 19:10:30 +0100 | [diff] [blame] | 1037 | cpu_synchronize_all_post_init(); |
| 1038 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1039 | ret = 0; |
| 1040 | |
| 1041 | out: |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1042 | QLIST_FOREACH_SAFE(le, &loadvm_handlers, entry, new_le) { |
| 1043 | QLIST_REMOVE(le, entry); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1044 | g_free(le); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1045 | } |
| 1046 | |
Juan Quintela | 42802d4 | 2011-10-05 01:14:46 +0200 | [diff] [blame] | 1047 | if (ret == 0) { |
| 1048 | ret = qemu_file_get_error(f); |
Juan Quintela | 624b9cc | 2011-10-05 01:02:52 +0200 | [diff] [blame] | 1049 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1050 | |
| 1051 | return ret; |
| 1052 | } |
| 1053 | |
Stefan Hajnoczi | 29d7827 | 2013-05-25 11:09:42 +0800 | [diff] [blame] | 1054 | static BlockDriverState *find_vmstate_bs(void) |
| 1055 | { |
| 1056 | BlockDriverState *bs = NULL; |
| 1057 | while ((bs = bdrv_next(bs))) { |
| 1058 | if (bdrv_can_snapshot(bs)) { |
| 1059 | return bs; |
| 1060 | } |
| 1061 | } |
| 1062 | return NULL; |
| 1063 | } |
| 1064 | |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 1065 | /* |
| 1066 | * Deletes snapshots of a given name in all opened images. |
| 1067 | */ |
| 1068 | static int del_existing_snapshots(Monitor *mon, const char *name) |
| 1069 | { |
| 1070 | BlockDriverState *bs; |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 1071 | QEMUSnapshotInfo sn1, *snapshot = &sn1; |
Wenchao Xia | a89d89d | 2013-09-11 14:04:33 +0800 | [diff] [blame] | 1072 | Error *err = NULL; |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 1073 | |
Markus Armbruster | dbc1359 | 2010-06-02 18:55:21 +0200 | [diff] [blame] | 1074 | bs = NULL; |
| 1075 | while ((bs = bdrv_next(bs))) { |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 1076 | if (bdrv_can_snapshot(bs) && |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 1077 | bdrv_snapshot_find(bs, snapshot, name) >= 0) { |
Wenchao Xia | a89d89d | 2013-09-11 14:04:33 +0800 | [diff] [blame] | 1078 | bdrv_snapshot_delete_by_id_or_name(bs, name, &err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1079 | if (err) { |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 1080 | monitor_printf(mon, |
Wenchao Xia | a89d89d | 2013-09-11 14:04:33 +0800 | [diff] [blame] | 1081 | "Error while deleting snapshot on device '%s':" |
| 1082 | " %s\n", |
| 1083 | bdrv_get_device_name(bs), |
| 1084 | error_get_pretty(err)); |
| 1085 | error_free(err); |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 1086 | return -1; |
| 1087 | } |
| 1088 | } |
| 1089 | } |
| 1090 | |
| 1091 | return 0; |
| 1092 | } |
| 1093 | |
Markus Armbruster | 3e5a50d | 2015-02-06 13:55:43 +0100 | [diff] [blame^] | 1094 | void hmp_savevm(Monitor *mon, const QDict *qdict) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1095 | { |
| 1096 | BlockDriverState *bs, *bs1; |
| 1097 | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 1098 | int ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1099 | QEMUFile *f; |
| 1100 | int saved_vm_running; |
Kevin Wolf | c2c9a46 | 2011-11-16 11:35:54 +0100 | [diff] [blame] | 1101 | uint64_t vm_state_size; |
Stefan Weil | 68b891e | 2013-01-07 22:20:27 +0100 | [diff] [blame] | 1102 | qemu_timeval tv; |
Miguel Di Ciurcio Filho | 7d631a1 | 2010-08-04 14:55:49 -0300 | [diff] [blame] | 1103 | struct tm tm; |
Luiz Capitulino | d54908a | 2009-08-28 15:27:13 -0300 | [diff] [blame] | 1104 | const char *name = qdict_get_try_str(qdict, "name"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1105 | |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 1106 | /* Verify if there is a device that doesn't support snapshots and is writable */ |
Markus Armbruster | dbc1359 | 2010-06-02 18:55:21 +0200 | [diff] [blame] | 1107 | bs = NULL; |
| 1108 | while ((bs = bdrv_next(bs))) { |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 1109 | |
Markus Armbruster | 07b70bf | 2011-08-03 15:08:11 +0200 | [diff] [blame] | 1110 | if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) { |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 1111 | continue; |
| 1112 | } |
| 1113 | |
| 1114 | if (!bdrv_can_snapshot(bs)) { |
| 1115 | monitor_printf(mon, "Device '%s' is writable but does not support snapshots.\n", |
| 1116 | bdrv_get_device_name(bs)); |
| 1117 | return; |
| 1118 | } |
| 1119 | } |
| 1120 | |
Stefan Hajnoczi | 29d7827 | 2013-05-25 11:09:42 +0800 | [diff] [blame] | 1121 | bs = find_vmstate_bs(); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1122 | if (!bs) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1123 | monitor_printf(mon, "No block device can accept snapshots\n"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1124 | return; |
| 1125 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1126 | |
Luiz Capitulino | 1354869 | 2011-07-29 15:36:43 -0300 | [diff] [blame] | 1127 | saved_vm_running = runstate_is_running(); |
Luiz Capitulino | 0461d5a | 2011-09-30 14:45:27 -0300 | [diff] [blame] | 1128 | vm_stop(RUN_STATE_SAVE_VM); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1129 | |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 1130 | memset(sn, 0, sizeof(*sn)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1131 | |
| 1132 | /* fill auxiliary fields */ |
Stefan Weil | 68b891e | 2013-01-07 22:20:27 +0100 | [diff] [blame] | 1133 | qemu_gettimeofday(&tv); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1134 | sn->date_sec = tv.tv_sec; |
| 1135 | sn->date_nsec = tv.tv_usec * 1000; |
Alex Bligh | bc72ad6 | 2013-08-21 16:03:08 +0100 | [diff] [blame] | 1136 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1137 | |
Miguel Di Ciurcio Filho | 7d631a1 | 2010-08-04 14:55:49 -0300 | [diff] [blame] | 1138 | if (name) { |
| 1139 | ret = bdrv_snapshot_find(bs, old_sn, name); |
| 1140 | if (ret >= 0) { |
| 1141 | pstrcpy(sn->name, sizeof(sn->name), old_sn->name); |
| 1142 | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str); |
| 1143 | } else { |
| 1144 | pstrcpy(sn->name, sizeof(sn->name), name); |
| 1145 | } |
| 1146 | } else { |
Blue Swirl | d7d9b52 | 2010-09-09 19:13:04 +0000 | [diff] [blame] | 1147 | /* cast below needed for OpenBSD where tv_sec is still 'long' */ |
| 1148 | localtime_r((const time_t *)&tv.tv_sec, &tm); |
Miguel Di Ciurcio Filho | 7d631a1 | 2010-08-04 14:55:49 -0300 | [diff] [blame] | 1149 | strftime(sn->name, sizeof(sn->name), "vm-%Y%m%d%H%M%S", &tm); |
Miguel Di Ciurcio Filho | 7d631a1 | 2010-08-04 14:55:49 -0300 | [diff] [blame] | 1150 | } |
| 1151 | |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 1152 | /* Delete old snapshots of the same name */ |
Marcelo Tosatti | f139a41 | 2010-01-20 14:26:34 -0200 | [diff] [blame] | 1153 | if (name && del_existing_snapshots(mon, name) < 0) { |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 1154 | goto the_end; |
| 1155 | } |
| 1156 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1157 | /* save the VM state */ |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 1158 | f = qemu_fopen_bdrv(bs, 1); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1159 | if (!f) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1160 | monitor_printf(mon, "Could not open VM state file\n"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1161 | goto the_end; |
| 1162 | } |
Luiz Capitulino | e1c37d0 | 2011-12-05 14:48:01 -0200 | [diff] [blame] | 1163 | ret = qemu_savevm_state(f); |
aliguori | 2d22b18 | 2008-12-11 21:06:49 +0000 | [diff] [blame] | 1164 | vm_state_size = qemu_ftell(f); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1165 | qemu_fclose(f); |
| 1166 | if (ret < 0) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1167 | monitor_printf(mon, "Error %d while writing VM\n", ret); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1168 | goto the_end; |
| 1169 | } |
| 1170 | |
| 1171 | /* create the snapshots */ |
| 1172 | |
Markus Armbruster | dbc1359 | 2010-06-02 18:55:21 +0200 | [diff] [blame] | 1173 | bs1 = NULL; |
| 1174 | while ((bs1 = bdrv_next(bs1))) { |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 1175 | if (bdrv_can_snapshot(bs1)) { |
aliguori | 2d22b18 | 2008-12-11 21:06:49 +0000 | [diff] [blame] | 1176 | /* Write VM state size only to the image that contains the state */ |
| 1177 | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1178 | ret = bdrv_snapshot_create(bs1, sn); |
| 1179 | if (ret < 0) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1180 | monitor_printf(mon, "Error while creating snapshot on '%s'\n", |
| 1181 | bdrv_get_device_name(bs1)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1182 | } |
| 1183 | } |
| 1184 | } |
| 1185 | |
| 1186 | the_end: |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 1187 | if (saved_vm_running) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1188 | vm_start(); |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 1189 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1190 | } |
| 1191 | |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 1192 | void qmp_xen_save_devices_state(const char *filename, Error **errp) |
| 1193 | { |
| 1194 | QEMUFile *f; |
| 1195 | int saved_vm_running; |
| 1196 | int ret; |
| 1197 | |
| 1198 | saved_vm_running = runstate_is_running(); |
| 1199 | vm_stop(RUN_STATE_SAVE_VM); |
| 1200 | |
| 1201 | f = qemu_fopen(filename, "wb"); |
| 1202 | if (!f) { |
Luiz Capitulino | 1befce9 | 2013-06-07 14:36:58 -0400 | [diff] [blame] | 1203 | error_setg_file_open(errp, errno, filename); |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 1204 | goto the_end; |
| 1205 | } |
| 1206 | ret = qemu_save_device_state(f); |
| 1207 | qemu_fclose(f); |
| 1208 | if (ret < 0) { |
| 1209 | error_set(errp, QERR_IO_ERROR); |
| 1210 | } |
| 1211 | |
| 1212 | the_end: |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 1213 | if (saved_vm_running) { |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 1214 | vm_start(); |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 1215 | } |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 1216 | } |
| 1217 | |
Markus Armbruster | 03cd465 | 2010-02-17 16:24:10 +0100 | [diff] [blame] | 1218 | int load_vmstate(const char *name) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1219 | { |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1220 | BlockDriverState *bs, *bs_vm_state; |
aliguori | 2d22b18 | 2008-12-11 21:06:49 +0000 | [diff] [blame] | 1221 | QEMUSnapshotInfo sn; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1222 | QEMUFile *f; |
Gerd Hoffmann | 751c6a1 | 2009-07-22 16:42:57 +0200 | [diff] [blame] | 1223 | int ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1224 | |
Stefan Hajnoczi | 29d7827 | 2013-05-25 11:09:42 +0800 | [diff] [blame] | 1225 | bs_vm_state = find_vmstate_bs(); |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1226 | if (!bs_vm_state) { |
| 1227 | error_report("No block device supports snapshots"); |
| 1228 | return -ENOTSUP; |
| 1229 | } |
| 1230 | |
| 1231 | /* Don't even try to load empty VM states */ |
| 1232 | ret = bdrv_snapshot_find(bs_vm_state, &sn, name); |
| 1233 | if (ret < 0) { |
| 1234 | return ret; |
| 1235 | } else if (sn.vm_state_size == 0) { |
Kevin Wolf | e11480d | 2011-03-01 10:48:12 +0100 | [diff] [blame] | 1236 | error_report("This is a disk-only snapshot. Revert to it offline " |
| 1237 | "using qemu-img."); |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1238 | return -EINVAL; |
| 1239 | } |
| 1240 | |
| 1241 | /* Verify if there is any device that doesn't support snapshots and is |
| 1242 | writable and check if the requested snapshot is available too. */ |
Markus Armbruster | dbc1359 | 2010-06-02 18:55:21 +0200 | [diff] [blame] | 1243 | bs = NULL; |
| 1244 | while ((bs = bdrv_next(bs))) { |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 1245 | |
Markus Armbruster | 07b70bf | 2011-08-03 15:08:11 +0200 | [diff] [blame] | 1246 | if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) { |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 1247 | continue; |
| 1248 | } |
| 1249 | |
| 1250 | if (!bdrv_can_snapshot(bs)) { |
| 1251 | error_report("Device '%s' is writable but does not support snapshots.", |
| 1252 | bdrv_get_device_name(bs)); |
| 1253 | return -ENOTSUP; |
| 1254 | } |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 1255 | |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1256 | ret = bdrv_snapshot_find(bs, &sn, name); |
| 1257 | if (ret < 0) { |
| 1258 | error_report("Device '%s' does not have the requested snapshot '%s'", |
| 1259 | bdrv_get_device_name(bs), name); |
| 1260 | return ret; |
| 1261 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1262 | } |
| 1263 | |
| 1264 | /* Flush all IO requests so they don't interfere with the new state. */ |
Stefan Hajnoczi | 922453b | 2011-11-30 12:23:43 +0000 | [diff] [blame] | 1265 | bdrv_drain_all(); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1266 | |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1267 | bs = NULL; |
| 1268 | while ((bs = bdrv_next(bs))) { |
| 1269 | if (bdrv_can_snapshot(bs)) { |
| 1270 | ret = bdrv_snapshot_goto(bs, name); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1271 | if (ret < 0) { |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1272 | error_report("Error %d while activating snapshot '%s' on '%s'", |
| 1273 | ret, name, bdrv_get_device_name(bs)); |
| 1274 | return ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1275 | } |
| 1276 | } |
| 1277 | } |
| 1278 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1279 | /* restore the VM state */ |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1280 | f = qemu_fopen_bdrv(bs_vm_state, 0); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1281 | if (!f) { |
Markus Armbruster | 1ecda02 | 2010-02-18 17:25:24 +0100 | [diff] [blame] | 1282 | error_report("Could not open VM state file"); |
Juan Quintela | 05f2401 | 2009-08-20 19:42:22 +0200 | [diff] [blame] | 1283 | return -EINVAL; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1284 | } |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1285 | |
Jan Kiszka | 5a8a49d | 2011-06-14 18:29:45 +0200 | [diff] [blame] | 1286 | qemu_system_reset(VMRESET_SILENT); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1287 | ret = qemu_loadvm_state(f); |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1288 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1289 | qemu_fclose(f); |
| 1290 | if (ret < 0) { |
Markus Armbruster | 1ecda02 | 2010-02-18 17:25:24 +0100 | [diff] [blame] | 1291 | error_report("Error %d while loading VM state", ret); |
Juan Quintela | 05f2401 | 2009-08-20 19:42:22 +0200 | [diff] [blame] | 1292 | return ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1293 | } |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1294 | |
Juan Quintela | 05f2401 | 2009-08-20 19:42:22 +0200 | [diff] [blame] | 1295 | return 0; |
Juan Quintela | 7b63034 | 2009-08-20 19:42:20 +0200 | [diff] [blame] | 1296 | } |
| 1297 | |
Markus Armbruster | 3e5a50d | 2015-02-06 13:55:43 +0100 | [diff] [blame^] | 1298 | void hmp_delvm(Monitor *mon, const QDict *qdict) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1299 | { |
Zhang Haoyu | af95738 | 2014-09-29 16:38:02 +0800 | [diff] [blame] | 1300 | BlockDriverState *bs; |
Chris Spiegel | ba2b228 | 2014-10-06 09:33:45 -0700 | [diff] [blame] | 1301 | Error *err; |
Luiz Capitulino | d54908a | 2009-08-28 15:27:13 -0300 | [diff] [blame] | 1302 | const char *name = qdict_get_str(qdict, "name"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1303 | |
Zhang Haoyu | af95738 | 2014-09-29 16:38:02 +0800 | [diff] [blame] | 1304 | if (!find_vmstate_bs()) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1305 | monitor_printf(mon, "No block device supports snapshots\n"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1306 | return; |
| 1307 | } |
| 1308 | |
Zhang Haoyu | af95738 | 2014-09-29 16:38:02 +0800 | [diff] [blame] | 1309 | bs = NULL; |
| 1310 | while ((bs = bdrv_next(bs))) { |
| 1311 | if (bdrv_can_snapshot(bs)) { |
Chris Spiegel | ba2b228 | 2014-10-06 09:33:45 -0700 | [diff] [blame] | 1312 | err = NULL; |
Wenchao Xia | a89d89d | 2013-09-11 14:04:33 +0800 | [diff] [blame] | 1313 | bdrv_snapshot_delete_by_id_or_name(bs, name, &err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1314 | if (err) { |
Wenchao Xia | a89d89d | 2013-09-11 14:04:33 +0800 | [diff] [blame] | 1315 | monitor_printf(mon, |
| 1316 | "Error while deleting snapshot on device '%s':" |
| 1317 | " %s\n", |
| 1318 | bdrv_get_device_name(bs), |
| 1319 | error_get_pretty(err)); |
| 1320 | error_free(err); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1321 | } |
| 1322 | } |
| 1323 | } |
| 1324 | } |
| 1325 | |
Wenchao Xia | 84f2d0e | 2013-01-14 14:06:25 +0800 | [diff] [blame] | 1326 | void do_info_snapshots(Monitor *mon, const QDict *qdict) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1327 | { |
| 1328 | BlockDriverState *bs, *bs1; |
Miguel Di Ciurcio Filho | f920991 | 2010-08-04 14:55:48 -0300 | [diff] [blame] | 1329 | QEMUSnapshotInfo *sn_tab, *sn, s, *sn_info = &s; |
| 1330 | int nb_sns, i, ret, available; |
| 1331 | int total; |
| 1332 | int *available_snapshots; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1333 | |
Stefan Hajnoczi | 29d7827 | 2013-05-25 11:09:42 +0800 | [diff] [blame] | 1334 | bs = find_vmstate_bs(); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1335 | if (!bs) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1336 | monitor_printf(mon, "No available block device supports snapshots\n"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1337 | return; |
| 1338 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1339 | |
| 1340 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
| 1341 | if (nb_sns < 0) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1342 | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1343 | return; |
| 1344 | } |
Miguel Di Ciurcio Filho | f920991 | 2010-08-04 14:55:48 -0300 | [diff] [blame] | 1345 | |
| 1346 | if (nb_sns == 0) { |
| 1347 | monitor_printf(mon, "There is no snapshot available.\n"); |
| 1348 | return; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1349 | } |
Miguel Di Ciurcio Filho | f920991 | 2010-08-04 14:55:48 -0300 | [diff] [blame] | 1350 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1351 | available_snapshots = g_malloc0(sizeof(int) * nb_sns); |
Miguel Di Ciurcio Filho | f920991 | 2010-08-04 14:55:48 -0300 | [diff] [blame] | 1352 | total = 0; |
| 1353 | for (i = 0; i < nb_sns; i++) { |
| 1354 | sn = &sn_tab[i]; |
| 1355 | available = 1; |
| 1356 | bs1 = NULL; |
| 1357 | |
| 1358 | while ((bs1 = bdrv_next(bs1))) { |
| 1359 | if (bdrv_can_snapshot(bs1) && bs1 != bs) { |
| 1360 | ret = bdrv_snapshot_find(bs1, sn_info, sn->id_str); |
| 1361 | if (ret < 0) { |
| 1362 | available = 0; |
| 1363 | break; |
| 1364 | } |
| 1365 | } |
| 1366 | } |
| 1367 | |
| 1368 | if (available) { |
| 1369 | available_snapshots[total] = i; |
| 1370 | total++; |
| 1371 | } |
| 1372 | } |
| 1373 | |
| 1374 | if (total > 0) { |
Wenchao Xia | 5b91704 | 2013-05-25 11:09:45 +0800 | [diff] [blame] | 1375 | bdrv_snapshot_dump((fprintf_function)monitor_printf, mon, NULL); |
| 1376 | monitor_printf(mon, "\n"); |
Miguel Di Ciurcio Filho | f920991 | 2010-08-04 14:55:48 -0300 | [diff] [blame] | 1377 | for (i = 0; i < total; i++) { |
| 1378 | sn = &sn_tab[available_snapshots[i]]; |
Wenchao Xia | 5b91704 | 2013-05-25 11:09:45 +0800 | [diff] [blame] | 1379 | bdrv_snapshot_dump((fprintf_function)monitor_printf, mon, sn); |
| 1380 | monitor_printf(mon, "\n"); |
Miguel Di Ciurcio Filho | f920991 | 2010-08-04 14:55:48 -0300 | [diff] [blame] | 1381 | } |
| 1382 | } else { |
| 1383 | monitor_printf(mon, "There is no suitable snapshot available\n"); |
| 1384 | } |
| 1385 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1386 | g_free(sn_tab); |
| 1387 | g_free(available_snapshots); |
Miguel Di Ciurcio Filho | f920991 | 2010-08-04 14:55:48 -0300 | [diff] [blame] | 1388 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1389 | } |
Avi Kivity | c5705a7 | 2011-12-20 15:59:12 +0200 | [diff] [blame] | 1390 | |
| 1391 | void vmstate_register_ram(MemoryRegion *mr, DeviceState *dev) |
| 1392 | { |
Avi Kivity | 1ddde08 | 2012-01-08 13:18:19 +0200 | [diff] [blame] | 1393 | qemu_ram_set_idstr(memory_region_get_ram_addr(mr) & TARGET_PAGE_MASK, |
Avi Kivity | c5705a7 | 2011-12-20 15:59:12 +0200 | [diff] [blame] | 1394 | memory_region_name(mr), dev); |
| 1395 | } |
| 1396 | |
| 1397 | void vmstate_unregister_ram(MemoryRegion *mr, DeviceState *dev) |
| 1398 | { |
Hu Tao | b0e56e0 | 2014-04-02 15:13:27 +0800 | [diff] [blame] | 1399 | qemu_ram_unset_idstr(memory_region_get_ram_addr(mr) & TARGET_PAGE_MASK); |
Avi Kivity | c5705a7 | 2011-12-20 15:59:12 +0200 | [diff] [blame] | 1400 | } |
| 1401 | |
| 1402 | void vmstate_register_ram_global(MemoryRegion *mr) |
| 1403 | { |
| 1404 | vmstate_register_ram(mr, NULL); |
| 1405 | } |