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" |
| 27 | #include "hw/hw.h" |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 28 | #include "hw/qdev.h" |
Paolo Bonzini | 1422e32 | 2012-10-24 08:43:34 +0200 | [diff] [blame] | 29 | #include "net/net.h" |
Paolo Bonzini | 83c9089 | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 30 | #include "monitor/monitor.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 31 | #include "sysemu/sysemu.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 32 | #include "qemu/timer.h" |
blueswir1 | 511d2b1 | 2009-03-07 15:32:56 +0000 | [diff] [blame] | 33 | #include "audio/audio.h" |
Paolo Bonzini | caf71f8 | 2012-12-17 18:19:50 +0100 | [diff] [blame] | 34 | #include "migration/migration.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 35 | #include "qemu/sockets.h" |
| 36 | #include "qemu/queue.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 37 | #include "sysemu/cpus.h" |
Paolo Bonzini | 022c62c | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 38 | #include "exec/memory.h" |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 39 | #include "qmp-commands.h" |
Juan Quintela | 517a13c | 2012-05-21 23:46:44 +0200 | [diff] [blame] | 40 | #include "trace.h" |
Orit Wasserman | 28085f7 | 2013-03-22 16:47:58 +0200 | [diff] [blame] | 41 | #include "qemu/iov.h" |
Wenchao Xia | de08c60 | 2013-05-25 11:09:43 +0800 | [diff] [blame] | 42 | #include "block/snapshot.h" |
Wenchao Xia | f364ec6 | 2013-05-25 11:09:44 +0800 | [diff] [blame] | 43 | #include "block/qapi.h" |
blueswir1 | 511d2b1 | 2009-03-07 15:32:56 +0000 | [diff] [blame] | 44 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 45 | #define SELF_ANNOUNCE_ROUNDS 5 |
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 | |
| 84 | len = announce_self_create(buf, nic->conf->macaddr.a); |
| 85 | |
Jason Wang | b356f76 | 2013-01-30 19:12:22 +0800 | [diff] [blame] | 86 | qemu_send_packet_raw(qemu_get_queue(nic), buf, len); |
Mark McLoughlin | f401ca2 | 2009-11-25 18:49:32 +0000 | [diff] [blame] | 87 | } |
| 88 | |
| 89 | |
Gleb Natapov | ed8b330 | 2009-05-21 17:17:44 +0300 | [diff] [blame] | 90 | static void qemu_announce_self_once(void *opaque) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 91 | { |
Gleb Natapov | ed8b330 | 2009-05-21 17:17:44 +0300 | [diff] [blame] | 92 | static int count = SELF_ANNOUNCE_ROUNDS; |
| 93 | QEMUTimer *timer = *(QEMUTimer **)opaque; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 94 | |
Mark McLoughlin | f401ca2 | 2009-11-25 18:49:32 +0000 | [diff] [blame] | 95 | qemu_foreach_nic(qemu_announce_self_iter, NULL); |
| 96 | |
Nolan | 18995b9 | 2009-10-15 16:53:55 -0700 | [diff] [blame] | 97 | if (--count) { |
| 98 | /* delay 50ms, 150ms, 250ms, ... */ |
Alex Bligh | bc72ad6 | 2013-08-21 16:03:08 +0100 | [diff] [blame] | 99 | timer_mod(timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + |
Nolan | 18995b9 | 2009-10-15 16:53:55 -0700 | [diff] [blame] | 100 | 50 + (SELF_ANNOUNCE_ROUNDS - count - 1) * 100); |
Gleb Natapov | ed8b330 | 2009-05-21 17:17:44 +0300 | [diff] [blame] | 101 | } else { |
Eduardo Habkost | 5cecf41 | 2013-11-28 12:01:12 -0200 | [diff] [blame] | 102 | timer_del(timer); |
| 103 | timer_free(timer); |
Gleb Natapov | ed8b330 | 2009-05-21 17:17:44 +0300 | [diff] [blame] | 104 | } |
| 105 | } |
| 106 | |
| 107 | void qemu_announce_self(void) |
| 108 | { |
Eduardo Habkost | 5cecf41 | 2013-11-28 12:01:12 -0200 | [diff] [blame] | 109 | static QEMUTimer *timer; |
| 110 | timer = timer_new_ms(QEMU_CLOCK_REALTIME, qemu_announce_self_once, &timer); |
| 111 | qemu_announce_self_once(&timer); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 112 | } |
| 113 | |
| 114 | /***********************************************************/ |
| 115 | /* savevm/loadvm support */ |
| 116 | |
Kevin Wolf | 05fcc84 | 2013-04-05 21:27:54 +0200 | [diff] [blame] | 117 | static ssize_t block_writev_buffer(void *opaque, struct iovec *iov, int iovcnt, |
| 118 | int64_t pos) |
| 119 | { |
| 120 | int ret; |
| 121 | QEMUIOVector qiov; |
| 122 | |
| 123 | qemu_iovec_init_external(&qiov, iov, iovcnt); |
| 124 | ret = bdrv_writev_vmstate(opaque, &qiov, pos); |
| 125 | if (ret < 0) { |
| 126 | return ret; |
| 127 | } |
| 128 | |
| 129 | return qiov.size; |
| 130 | } |
| 131 | |
aliguori | 178e08a | 2009-04-05 19:10:55 +0000 | [diff] [blame] | 132 | static int block_put_buffer(void *opaque, const uint8_t *buf, |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 133 | int64_t pos, int size) |
| 134 | { |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 135 | bdrv_save_vmstate(opaque, buf, pos, size); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 136 | return size; |
| 137 | } |
| 138 | |
aliguori | 178e08a | 2009-04-05 19:10:55 +0000 | [diff] [blame] | 139 | 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] | 140 | { |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 141 | return bdrv_load_vmstate(opaque, buf, pos, size); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 142 | } |
| 143 | |
| 144 | static int bdrv_fclose(void *opaque) |
| 145 | { |
Paolo Bonzini | ad492c9 | 2012-06-06 00:04:50 +0200 | [diff] [blame] | 146 | return bdrv_flush(opaque); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 147 | } |
| 148 | |
Paolo Bonzini | 9229bf3 | 2012-08-08 10:15:15 +0200 | [diff] [blame] | 149 | static const QEMUFileOps bdrv_read_ops = { |
| 150 | .get_buffer = block_get_buffer, |
| 151 | .close = bdrv_fclose |
| 152 | }; |
| 153 | |
| 154 | static const QEMUFileOps bdrv_write_ops = { |
Kevin Wolf | 05fcc84 | 2013-04-05 21:27:54 +0200 | [diff] [blame] | 155 | .put_buffer = block_put_buffer, |
| 156 | .writev_buffer = block_writev_buffer, |
| 157 | .close = bdrv_fclose |
Paolo Bonzini | 9229bf3 | 2012-08-08 10:15:15 +0200 | [diff] [blame] | 158 | }; |
| 159 | |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 160 | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 161 | { |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 162 | if (is_writable) { |
Paolo Bonzini | 9229bf3 | 2012-08-08 10:15:15 +0200 | [diff] [blame] | 163 | return qemu_fopen_ops(bs, &bdrv_write_ops); |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 164 | } |
Paolo Bonzini | 9229bf3 | 2012-08-08 10:15:15 +0200 | [diff] [blame] | 165 | return qemu_fopen_ops(bs, &bdrv_read_ops); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 166 | } |
| 167 | |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 168 | |
Eduardo Habkost | bb1a6d8 | 2013-11-29 12:26:02 -0200 | [diff] [blame] | 169 | /* QEMUFile timer support. |
| 170 | * Not in qemu-file.c to not add qemu-timer.c as dependency to qemu-file.c |
| 171 | */ |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 172 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 173 | void timer_put(QEMUFile *f, QEMUTimer *ts) |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 174 | { |
| 175 | uint64_t expire_time; |
| 176 | |
Alex Bligh | e93379b | 2013-08-21 16:02:39 +0100 | [diff] [blame] | 177 | expire_time = timer_expire_time_ns(ts); |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 178 | qemu_put_be64(f, expire_time); |
| 179 | } |
| 180 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 181 | void timer_get(QEMUFile *f, QEMUTimer *ts) |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 182 | { |
| 183 | uint64_t expire_time; |
| 184 | |
| 185 | expire_time = qemu_get_be64(f); |
| 186 | if (expire_time != -1) { |
Alex Bligh | bc72ad6 | 2013-08-21 16:03:08 +0100 | [diff] [blame] | 187 | timer_mod_ns(ts, expire_time); |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 188 | } else { |
Alex Bligh | bc72ad6 | 2013-08-21 16:03:08 +0100 | [diff] [blame] | 189 | timer_del(ts); |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 190 | } |
| 191 | } |
| 192 | |
| 193 | |
Eduardo Habkost | bb1a6d8 | 2013-11-29 12:26:02 -0200 | [diff] [blame] | 194 | /* VMState timer support. |
| 195 | * Not in vmstate.c to not add qemu-timer.c as dependency to vmstate.c |
| 196 | */ |
Juan Quintela | dde0463 | 2009-08-20 19:42:26 +0200 | [diff] [blame] | 197 | |
| 198 | static int get_timer(QEMUFile *f, void *pv, size_t size) |
| 199 | { |
| 200 | QEMUTimer *v = pv; |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 201 | timer_get(f, v); |
Juan Quintela | dde0463 | 2009-08-20 19:42:26 +0200 | [diff] [blame] | 202 | return 0; |
| 203 | } |
| 204 | |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 205 | static void put_timer(QEMUFile *f, void *pv, size_t size) |
Juan Quintela | dde0463 | 2009-08-20 19:42:26 +0200 | [diff] [blame] | 206 | { |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 207 | QEMUTimer *v = pv; |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 208 | timer_put(f, v); |
Juan Quintela | dde0463 | 2009-08-20 19:42:26 +0200 | [diff] [blame] | 209 | } |
| 210 | |
| 211 | const VMStateInfo vmstate_info_timer = { |
| 212 | .name = "timer", |
| 213 | .get = get_timer, |
| 214 | .put = put_timer, |
| 215 | }; |
| 216 | |
Peter Maydell | 08e99e2 | 2012-10-30 07:45:12 +0000 | [diff] [blame] | 217 | |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 218 | typedef struct CompatEntry { |
| 219 | char idstr[256]; |
| 220 | int instance_id; |
| 221 | } CompatEntry; |
| 222 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 223 | typedef struct SaveStateEntry { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 224 | QTAILQ_ENTRY(SaveStateEntry) entry; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 225 | char idstr[256]; |
| 226 | int instance_id; |
Jan Kiszka | 4d2ffa0 | 2010-05-15 13:32:40 +0200 | [diff] [blame] | 227 | int alias_id; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 228 | int version_id; |
| 229 | int section_id; |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 230 | SaveVMHandlers *ops; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 231 | const VMStateDescription *vmsd; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 232 | void *opaque; |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 233 | CompatEntry *compat; |
Cam Macdonell | 2431296 | 2010-07-26 18:11:00 -0600 | [diff] [blame] | 234 | int no_migrate; |
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 | |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 243 | static int calculate_new_instance_id(const char *idstr) |
| 244 | { |
| 245 | SaveStateEntry *se; |
| 246 | int instance_id = 0; |
| 247 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 248 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 249 | if (strcmp(idstr, se->idstr) == 0 |
| 250 | && instance_id <= se->instance_id) { |
| 251 | instance_id = se->instance_id + 1; |
| 252 | } |
| 253 | } |
| 254 | return instance_id; |
| 255 | } |
| 256 | |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 257 | static int calculate_compat_instance_id(const char *idstr) |
| 258 | { |
| 259 | SaveStateEntry *se; |
| 260 | int instance_id = 0; |
| 261 | |
| 262 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 263 | if (!se->compat) { |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 264 | continue; |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 265 | } |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 266 | |
| 267 | if (strcmp(idstr, se->compat->idstr) == 0 |
| 268 | && instance_id <= se->compat->instance_id) { |
| 269 | instance_id = se->compat->instance_id + 1; |
| 270 | } |
| 271 | } |
| 272 | return instance_id; |
| 273 | } |
| 274 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 275 | /* TODO: Individual devices generally have very little idea about the rest |
| 276 | of the system, so instance_id should be removed/replaced. |
| 277 | Meanwhile pass -1 as instance_id if you do not already have a clearly |
| 278 | distinguishing id for all instances of your device class. */ |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 279 | int register_savevm_live(DeviceState *dev, |
| 280 | const char *idstr, |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 281 | int instance_id, |
| 282 | int version_id, |
Juan Quintela | 7908c78 | 2012-06-26 18:46:10 +0200 | [diff] [blame] | 283 | SaveVMHandlers *ops, |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 284 | void *opaque) |
| 285 | { |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 286 | SaveStateEntry *se; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 287 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 288 | se = g_malloc0(sizeof(SaveStateEntry)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 289 | se->version_id = version_id; |
| 290 | se->section_id = global_section_id++; |
Juan Quintela | 7908c78 | 2012-06-26 18:46:10 +0200 | [diff] [blame] | 291 | se->ops = ops; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 292 | se->opaque = opaque; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 293 | se->vmsd = NULL; |
Cam Macdonell | 2431296 | 2010-07-26 18:11:00 -0600 | [diff] [blame] | 294 | se->no_migrate = 0; |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 295 | /* if this is a live_savem then set is_ram */ |
Juan Quintela | 16310a3 | 2012-06-28 15:31:37 +0200 | [diff] [blame] | 296 | if (ops->save_live_setup != NULL) { |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 297 | se->is_ram = 1; |
| 298 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 299 | |
Anthony Liguori | 09e5ab6 | 2012-02-03 12:28:43 -0600 | [diff] [blame] | 300 | if (dev) { |
| 301 | char *id = qdev_get_dev_path(dev); |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 302 | if (id) { |
| 303 | pstrcpy(se->idstr, sizeof(se->idstr), id); |
| 304 | pstrcat(se->idstr, sizeof(se->idstr), "/"); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 305 | g_free(id); |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 306 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 307 | se->compat = g_malloc0(sizeof(CompatEntry)); |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 308 | pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), idstr); |
| 309 | se->compat->instance_id = instance_id == -1 ? |
| 310 | calculate_compat_instance_id(idstr) : instance_id; |
| 311 | instance_id = -1; |
| 312 | } |
| 313 | } |
| 314 | pstrcat(se->idstr, sizeof(se->idstr), idstr); |
| 315 | |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 316 | if (instance_id == -1) { |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 317 | se->instance_id = calculate_new_instance_id(se->idstr); |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 318 | } else { |
| 319 | se->instance_id = instance_id; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 320 | } |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 321 | assert(!se->compat || se->instance_id == 0); |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 322 | /* add at the end of list */ |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 323 | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 324 | return 0; |
| 325 | } |
| 326 | |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 327 | int register_savevm(DeviceState *dev, |
| 328 | const char *idstr, |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 329 | int instance_id, |
| 330 | int version_id, |
| 331 | SaveStateHandler *save_state, |
| 332 | LoadStateHandler *load_state, |
| 333 | void *opaque) |
| 334 | { |
Juan Quintela | 7908c78 | 2012-06-26 18:46:10 +0200 | [diff] [blame] | 335 | SaveVMHandlers *ops = g_malloc0(sizeof(SaveVMHandlers)); |
| 336 | ops->save_state = save_state; |
| 337 | ops->load_state = load_state; |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 338 | return register_savevm_live(dev, idstr, instance_id, version_id, |
Juan Quintela | 7908c78 | 2012-06-26 18:46:10 +0200 | [diff] [blame] | 339 | ops, opaque); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 340 | } |
| 341 | |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 342 | void unregister_savevm(DeviceState *dev, const char *idstr, void *opaque) |
aliguori | 41bd13a | 2009-04-17 17:10:59 +0000 | [diff] [blame] | 343 | { |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 344 | SaveStateEntry *se, *new_se; |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 345 | char id[256] = ""; |
| 346 | |
Anthony Liguori | 09e5ab6 | 2012-02-03 12:28:43 -0600 | [diff] [blame] | 347 | if (dev) { |
| 348 | char *path = qdev_get_dev_path(dev); |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 349 | if (path) { |
| 350 | pstrcpy(id, sizeof(id), path); |
| 351 | pstrcat(id, sizeof(id), "/"); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 352 | g_free(path); |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 353 | } |
| 354 | } |
| 355 | pstrcat(id, sizeof(id), idstr); |
aliguori | 41bd13a | 2009-04-17 17:10:59 +0000 | [diff] [blame] | 356 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 357 | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 358 | if (strcmp(se->idstr, id) == 0 && se->opaque == opaque) { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 359 | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
Alex Williamson | 69e58af | 2010-07-21 08:35:31 -0600 | [diff] [blame] | 360 | if (se->compat) { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 361 | g_free(se->compat); |
Alex Williamson | 69e58af | 2010-07-21 08:35:31 -0600 | [diff] [blame] | 362 | } |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 363 | g_free(se->ops); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 364 | g_free(se); |
aliguori | 41bd13a | 2009-04-17 17:10:59 +0000 | [diff] [blame] | 365 | } |
aliguori | 41bd13a | 2009-04-17 17:10:59 +0000 | [diff] [blame] | 366 | } |
| 367 | } |
| 368 | |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 369 | int vmstate_register_with_alias_id(DeviceState *dev, int instance_id, |
Jan Kiszka | 4d2ffa0 | 2010-05-15 13:32:40 +0200 | [diff] [blame] | 370 | const VMStateDescription *vmsd, |
| 371 | void *opaque, int alias_id, |
| 372 | int required_for_version) |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 373 | { |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 374 | SaveStateEntry *se; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 375 | |
Jan Kiszka | 4d2ffa0 | 2010-05-15 13:32:40 +0200 | [diff] [blame] | 376 | /* If this triggers, alias support can be dropped for the vmsd. */ |
| 377 | assert(alias_id == -1 || required_for_version >= vmsd->minimum_version_id); |
| 378 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 379 | se = g_malloc0(sizeof(SaveStateEntry)); |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 380 | se->version_id = vmsd->version_id; |
| 381 | se->section_id = global_section_id++; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 382 | se->opaque = opaque; |
| 383 | se->vmsd = vmsd; |
Jan Kiszka | 4d2ffa0 | 2010-05-15 13:32:40 +0200 | [diff] [blame] | 384 | se->alias_id = alias_id; |
Gerd Hoffmann | 2837c8e | 2011-07-08 10:44:35 +0200 | [diff] [blame] | 385 | se->no_migrate = vmsd->unmigratable; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 386 | |
Anthony Liguori | 09e5ab6 | 2012-02-03 12:28:43 -0600 | [diff] [blame] | 387 | if (dev) { |
| 388 | char *id = qdev_get_dev_path(dev); |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 389 | if (id) { |
| 390 | pstrcpy(se->idstr, sizeof(se->idstr), id); |
| 391 | pstrcat(se->idstr, sizeof(se->idstr), "/"); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 392 | g_free(id); |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 393 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 394 | se->compat = g_malloc0(sizeof(CompatEntry)); |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 395 | pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), vmsd->name); |
| 396 | se->compat->instance_id = instance_id == -1 ? |
| 397 | calculate_compat_instance_id(vmsd->name) : instance_id; |
| 398 | instance_id = -1; |
| 399 | } |
| 400 | } |
| 401 | pstrcat(se->idstr, sizeof(se->idstr), vmsd->name); |
| 402 | |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 403 | if (instance_id == -1) { |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 404 | se->instance_id = calculate_new_instance_id(se->idstr); |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 405 | } else { |
| 406 | se->instance_id = instance_id; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 407 | } |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 408 | assert(!se->compat || se->instance_id == 0); |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 409 | /* add at the end of list */ |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 410 | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 411 | return 0; |
| 412 | } |
| 413 | |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 414 | void vmstate_unregister(DeviceState *dev, const VMStateDescription *vmsd, |
| 415 | void *opaque) |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 416 | { |
Juan Quintela | 1eb7538 | 2009-09-10 03:04:29 +0200 | [diff] [blame] | 417 | SaveStateEntry *se, *new_se; |
| 418 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 419 | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
Juan Quintela | 1eb7538 | 2009-09-10 03:04:29 +0200 | [diff] [blame] | 420 | if (se->vmsd == vmsd && se->opaque == opaque) { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 421 | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
Alex Williamson | 69e58af | 2010-07-21 08:35:31 -0600 | [diff] [blame] | 422 | if (se->compat) { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 423 | g_free(se->compat); |
Alex Williamson | 69e58af | 2010-07-21 08:35:31 -0600 | [diff] [blame] | 424 | } |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 425 | g_free(se); |
Juan Quintela | 1eb7538 | 2009-09-10 03:04:29 +0200 | [diff] [blame] | 426 | } |
| 427 | } |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 428 | } |
| 429 | |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 430 | static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id) |
| 431 | { |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 432 | if (!se->vmsd) { /* Old style */ |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 433 | return se->ops->load_state(f, se->opaque, version_id); |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 434 | } |
| 435 | return vmstate_load_state(f, se->vmsd, se->opaque, version_id); |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 436 | } |
| 437 | |
Alex Williamson | dc91212 | 2011-01-11 14:39:43 -0700 | [diff] [blame] | 438 | static void vmstate_save(QEMUFile *f, SaveStateEntry *se) |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 439 | { |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 440 | if (!se->vmsd) { /* Old style */ |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 441 | se->ops->save_state(f, se->opaque); |
Alex Williamson | dc91212 | 2011-01-11 14:39:43 -0700 | [diff] [blame] | 442 | return; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 443 | } |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 444 | vmstate_save_state(f, se->vmsd, se->opaque); |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 445 | } |
| 446 | |
Luiz Capitulino | e1c37d0 | 2011-12-05 14:48:01 -0200 | [diff] [blame] | 447 | bool qemu_savevm_state_blocked(Error **errp) |
Alex Williamson | dc91212 | 2011-01-11 14:39:43 -0700 | [diff] [blame] | 448 | { |
| 449 | SaveStateEntry *se; |
| 450 | |
| 451 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
| 452 | if (se->no_migrate) { |
Luiz Capitulino | e1c37d0 | 2011-12-05 14:48:01 -0200 | [diff] [blame] | 453 | error_set(errp, QERR_MIGRATION_NOT_SUPPORTED, se->idstr); |
Alex Williamson | dc91212 | 2011-01-11 14:39:43 -0700 | [diff] [blame] | 454 | return true; |
| 455 | } |
| 456 | } |
| 457 | return false; |
| 458 | } |
| 459 | |
Paolo Bonzini | 47c8c17 | 2013-02-22 17:36:13 +0100 | [diff] [blame] | 460 | void qemu_savevm_state_begin(QEMUFile *f, |
| 461 | const MigrationParams *params) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 462 | { |
| 463 | SaveStateEntry *se; |
Juan Quintela | 3934638 | 2011-09-22 11:02:14 +0200 | [diff] [blame] | 464 | int ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 465 | |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 466 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 467 | if (!se->ops || !se->ops->set_params) { |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 468 | continue; |
Isaku Yamahata | 6607ae2 | 2012-06-19 18:43:09 +0300 | [diff] [blame] | 469 | } |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 470 | se->ops->set_params(params, se->opaque); |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 471 | } |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 472 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 473 | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); |
| 474 | qemu_put_be32(f, QEMU_VM_FILE_VERSION); |
| 475 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 476 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 477 | int len; |
| 478 | |
Juan Quintela | d1315aa | 2012-06-28 15:11:57 +0200 | [diff] [blame] | 479 | if (!se->ops || !se->ops->save_live_setup) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 480 | continue; |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 481 | } |
Juan Quintela | 6bd6878 | 2012-06-27 10:59:15 +0200 | [diff] [blame] | 482 | if (se->ops && se->ops->is_active) { |
| 483 | if (!se->ops->is_active(se->opaque)) { |
| 484 | continue; |
| 485 | } |
| 486 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 487 | /* Section type */ |
| 488 | qemu_put_byte(f, QEMU_VM_SECTION_START); |
| 489 | qemu_put_be32(f, se->section_id); |
| 490 | |
| 491 | /* ID string */ |
| 492 | len = strlen(se->idstr); |
| 493 | qemu_put_byte(f, len); |
| 494 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
| 495 | |
| 496 | qemu_put_be32(f, se->instance_id); |
| 497 | qemu_put_be32(f, se->version_id); |
| 498 | |
Juan Quintela | d1315aa | 2012-06-28 15:11:57 +0200 | [diff] [blame] | 499 | ret = se->ops->save_live_setup(f, se->opaque); |
Juan Quintela | 2975725 | 2011-10-19 15:22:18 +0200 | [diff] [blame] | 500 | if (ret < 0) { |
Paolo Bonzini | 47c8c17 | 2013-02-22 17:36:13 +0100 | [diff] [blame] | 501 | qemu_file_set_error(f, ret); |
| 502 | break; |
Juan Quintela | 2975725 | 2011-10-19 15:22:18 +0200 | [diff] [blame] | 503 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 504 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 505 | } |
| 506 | |
Juan Quintela | 3934638 | 2011-09-22 11:02:14 +0200 | [diff] [blame] | 507 | /* |
Dong Xu Wang | 07f3507 | 2011-11-22 18:06:26 +0800 | [diff] [blame] | 508 | * this function has three return values: |
Juan Quintela | 3934638 | 2011-09-22 11:02:14 +0200 | [diff] [blame] | 509 | * negative: there was one error, and we have -errno. |
| 510 | * 0 : We haven't finished, caller have to go again |
| 511 | * 1 : We have finished, we can go to complete phase |
| 512 | */ |
Luiz Capitulino | 539de12 | 2011-12-05 14:06:56 -0200 | [diff] [blame] | 513 | int qemu_savevm_state_iterate(QEMUFile *f) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 514 | { |
| 515 | SaveStateEntry *se; |
| 516 | int ret = 1; |
| 517 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 518 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
Juan Quintela | 16310a3 | 2012-06-28 15:31:37 +0200 | [diff] [blame] | 519 | if (!se->ops || !se->ops->save_live_iterate) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 520 | continue; |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 521 | } |
Juan Quintela | 6bd6878 | 2012-06-27 10:59:15 +0200 | [diff] [blame] | 522 | if (se->ops && se->ops->is_active) { |
| 523 | if (!se->ops->is_active(se->opaque)) { |
| 524 | continue; |
| 525 | } |
| 526 | } |
Juan Quintela | aac844e | 2012-05-22 00:38:26 +0200 | [diff] [blame] | 527 | if (qemu_file_rate_limit(f)) { |
| 528 | return 0; |
| 529 | } |
Juan Quintela | 517a13c | 2012-05-21 23:46:44 +0200 | [diff] [blame] | 530 | trace_savevm_section_start(); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 531 | /* Section type */ |
| 532 | qemu_put_byte(f, QEMU_VM_SECTION_PART); |
| 533 | qemu_put_be32(f, se->section_id); |
| 534 | |
Juan Quintela | 16310a3 | 2012-06-28 15:31:37 +0200 | [diff] [blame] | 535 | ret = se->ops->save_live_iterate(f, se->opaque); |
Juan Quintela | 517a13c | 2012-05-21 23:46:44 +0200 | [diff] [blame] | 536 | trace_savevm_section_end(se->section_id); |
| 537 | |
Paolo Bonzini | 47c8c17 | 2013-02-22 17:36:13 +0100 | [diff] [blame] | 538 | if (ret < 0) { |
| 539 | qemu_file_set_error(f, ret); |
| 540 | } |
Juan Quintela | 2975725 | 2011-10-19 15:22:18 +0200 | [diff] [blame] | 541 | if (ret <= 0) { |
Jan Kiszka | 90697be | 2009-12-01 15:19:55 +0100 | [diff] [blame] | 542 | /* Do not proceed to the next vmstate before this one reported |
| 543 | completion of the current stage. This serializes the migration |
| 544 | and reduces the probability that a faster changing state is |
| 545 | synchronized over and over again. */ |
| 546 | break; |
| 547 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 548 | } |
Juan Quintela | 3934638 | 2011-09-22 11:02:14 +0200 | [diff] [blame] | 549 | return ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 550 | } |
| 551 | |
Paolo Bonzini | 47c8c17 | 2013-02-22 17:36:13 +0100 | [diff] [blame] | 552 | void qemu_savevm_state_complete(QEMUFile *f) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 553 | { |
| 554 | SaveStateEntry *se; |
Juan Quintela | 2975725 | 2011-10-19 15:22:18 +0200 | [diff] [blame] | 555 | int ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 556 | |
Jan Kiszka | ea375f9 | 2010-03-01 19:10:30 +0100 | [diff] [blame] | 557 | cpu_synchronize_all_states(); |
| 558 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 559 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
Juan Quintela | 16310a3 | 2012-06-28 15:31:37 +0200 | [diff] [blame] | 560 | if (!se->ops || !se->ops->save_live_complete) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 561 | continue; |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 562 | } |
Juan Quintela | 6bd6878 | 2012-06-27 10:59:15 +0200 | [diff] [blame] | 563 | if (se->ops && se->ops->is_active) { |
| 564 | if (!se->ops->is_active(se->opaque)) { |
| 565 | continue; |
| 566 | } |
| 567 | } |
Juan Quintela | 517a13c | 2012-05-21 23:46:44 +0200 | [diff] [blame] | 568 | trace_savevm_section_start(); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 569 | /* Section type */ |
| 570 | qemu_put_byte(f, QEMU_VM_SECTION_END); |
| 571 | qemu_put_be32(f, se->section_id); |
| 572 | |
Juan Quintela | 16310a3 | 2012-06-28 15:31:37 +0200 | [diff] [blame] | 573 | ret = se->ops->save_live_complete(f, se->opaque); |
Juan Quintela | 517a13c | 2012-05-21 23:46:44 +0200 | [diff] [blame] | 574 | trace_savevm_section_end(se->section_id); |
Juan Quintela | 2975725 | 2011-10-19 15:22:18 +0200 | [diff] [blame] | 575 | if (ret < 0) { |
Paolo Bonzini | 47c8c17 | 2013-02-22 17:36:13 +0100 | [diff] [blame] | 576 | qemu_file_set_error(f, ret); |
| 577 | return; |
Juan Quintela | 2975725 | 2011-10-19 15:22:18 +0200 | [diff] [blame] | 578 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 579 | } |
| 580 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 581 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 582 | int len; |
| 583 | |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 584 | if ((!se->ops || !se->ops->save_state) && !se->vmsd) { |
Eduardo Habkost | 5cecf41 | 2013-11-28 12:01:12 -0200 | [diff] [blame] | 585 | continue; |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 586 | } |
Juan Quintela | 517a13c | 2012-05-21 23:46:44 +0200 | [diff] [blame] | 587 | trace_savevm_section_start(); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 588 | /* Section type */ |
| 589 | qemu_put_byte(f, QEMU_VM_SECTION_FULL); |
| 590 | qemu_put_be32(f, se->section_id); |
| 591 | |
| 592 | /* ID string */ |
| 593 | len = strlen(se->idstr); |
| 594 | qemu_put_byte(f, len); |
| 595 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
| 596 | |
| 597 | qemu_put_be32(f, se->instance_id); |
| 598 | qemu_put_be32(f, se->version_id); |
| 599 | |
Alex Williamson | dc91212 | 2011-01-11 14:39:43 -0700 | [diff] [blame] | 600 | vmstate_save(f, se); |
Juan Quintela | 517a13c | 2012-05-21 23:46:44 +0200 | [diff] [blame] | 601 | trace_savevm_section_end(se->section_id); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 602 | } |
| 603 | |
| 604 | qemu_put_byte(f, QEMU_VM_EOF); |
Paolo Bonzini | edaae61 | 2013-02-22 17:36:29 +0100 | [diff] [blame] | 605 | qemu_fflush(f); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 606 | } |
| 607 | |
Juan Quintela | e4ed154 | 2012-09-21 11:18:18 +0200 | [diff] [blame] | 608 | uint64_t qemu_savevm_state_pending(QEMUFile *f, uint64_t max_size) |
| 609 | { |
| 610 | SaveStateEntry *se; |
| 611 | uint64_t ret = 0; |
| 612 | |
| 613 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
| 614 | if (!se->ops || !se->ops->save_live_pending) { |
| 615 | continue; |
| 616 | } |
| 617 | if (se->ops && se->ops->is_active) { |
| 618 | if (!se->ops->is_active(se->opaque)) { |
| 619 | continue; |
| 620 | } |
| 621 | } |
| 622 | ret += se->ops->save_live_pending(f, se->opaque, max_size); |
| 623 | } |
| 624 | return ret; |
| 625 | } |
| 626 | |
Juan Quintela | 6522773 | 2013-01-14 14:14:42 +0100 | [diff] [blame] | 627 | void qemu_savevm_state_cancel(void) |
Jan Kiszka | 4ec7fcc | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 628 | { |
| 629 | SaveStateEntry *se; |
| 630 | |
| 631 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
Juan Quintela | 9b5bfab | 2012-06-26 19:26:41 +0200 | [diff] [blame] | 632 | if (se->ops && se->ops->cancel) { |
| 633 | se->ops->cancel(se->opaque); |
Jan Kiszka | 4ec7fcc | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 634 | } |
| 635 | } |
| 636 | } |
| 637 | |
Luiz Capitulino | e1c37d0 | 2011-12-05 14:48:01 -0200 | [diff] [blame] | 638 | static int qemu_savevm_state(QEMUFile *f) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 639 | { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 640 | int ret; |
Isaku Yamahata | 6607ae2 | 2012-06-19 18:43:09 +0300 | [diff] [blame] | 641 | MigrationParams params = { |
| 642 | .blk = 0, |
| 643 | .shared = 0 |
| 644 | }; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 645 | |
Luiz Capitulino | e1c37d0 | 2011-12-05 14:48:01 -0200 | [diff] [blame] | 646 | if (qemu_savevm_state_blocked(NULL)) { |
Paolo Bonzini | 04943eb | 2013-02-22 17:36:10 +0100 | [diff] [blame] | 647 | return -EINVAL; |
Alex Williamson | dc91212 | 2011-01-11 14:39:43 -0700 | [diff] [blame] | 648 | } |
| 649 | |
Paolo Bonzini | 9b09503 | 2013-02-22 17:36:28 +0100 | [diff] [blame] | 650 | qemu_mutex_unlock_iothread(); |
Paolo Bonzini | 47c8c17 | 2013-02-22 17:36:13 +0100 | [diff] [blame] | 651 | qemu_savevm_state_begin(f, ¶ms); |
Paolo Bonzini | 9b09503 | 2013-02-22 17:36:28 +0100 | [diff] [blame] | 652 | qemu_mutex_lock_iothread(); |
| 653 | |
Paolo Bonzini | 47c8c17 | 2013-02-22 17:36:13 +0100 | [diff] [blame] | 654 | while (qemu_file_get_error(f) == 0) { |
| 655 | if (qemu_savevm_state_iterate(f) > 0) { |
| 656 | break; |
| 657 | } |
| 658 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 659 | |
Paolo Bonzini | 47c8c17 | 2013-02-22 17:36:13 +0100 | [diff] [blame] | 660 | ret = qemu_file_get_error(f); |
Juan Quintela | 3934638 | 2011-09-22 11:02:14 +0200 | [diff] [blame] | 661 | if (ret == 0) { |
Paolo Bonzini | 47c8c17 | 2013-02-22 17:36:13 +0100 | [diff] [blame] | 662 | qemu_savevm_state_complete(f); |
Juan Quintela | 624b9cc | 2011-10-05 01:02:52 +0200 | [diff] [blame] | 663 | ret = qemu_file_get_error(f); |
Juan Quintela | 3934638 | 2011-09-22 11:02:14 +0200 | [diff] [blame] | 664 | } |
Paolo Bonzini | 04943eb | 2013-02-22 17:36:10 +0100 | [diff] [blame] | 665 | if (ret != 0) { |
| 666 | qemu_savevm_state_cancel(); |
| 667 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 668 | return ret; |
| 669 | } |
| 670 | |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 671 | static int qemu_save_device_state(QEMUFile *f) |
| 672 | { |
| 673 | SaveStateEntry *se; |
| 674 | |
| 675 | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); |
| 676 | qemu_put_be32(f, QEMU_VM_FILE_VERSION); |
| 677 | |
| 678 | cpu_synchronize_all_states(); |
| 679 | |
| 680 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
| 681 | int len; |
| 682 | |
| 683 | if (se->is_ram) { |
| 684 | continue; |
| 685 | } |
Juan Quintela | 22ea40f | 2012-06-26 17:19:10 +0200 | [diff] [blame] | 686 | if ((!se->ops || !se->ops->save_state) && !se->vmsd) { |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 687 | continue; |
| 688 | } |
| 689 | |
| 690 | /* Section type */ |
| 691 | qemu_put_byte(f, QEMU_VM_SECTION_FULL); |
| 692 | qemu_put_be32(f, se->section_id); |
| 693 | |
| 694 | /* ID string */ |
| 695 | len = strlen(se->idstr); |
| 696 | qemu_put_byte(f, len); |
| 697 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
| 698 | |
| 699 | qemu_put_be32(f, se->instance_id); |
| 700 | qemu_put_be32(f, se->version_id); |
| 701 | |
| 702 | vmstate_save(f, se); |
| 703 | } |
| 704 | |
| 705 | qemu_put_byte(f, QEMU_VM_EOF); |
| 706 | |
| 707 | return qemu_file_get_error(f); |
| 708 | } |
| 709 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 710 | static SaveStateEntry *find_se(const char *idstr, int instance_id) |
| 711 | { |
| 712 | SaveStateEntry *se; |
| 713 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 714 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 715 | if (!strcmp(se->idstr, idstr) && |
Jan Kiszka | 4d2ffa0 | 2010-05-15 13:32:40 +0200 | [diff] [blame] | 716 | (instance_id == se->instance_id || |
| 717 | instance_id == se->alias_id)) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 718 | return se; |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 719 | /* Migrating from an older version? */ |
| 720 | if (strstr(se->idstr, idstr) && se->compat) { |
| 721 | if (!strcmp(se->compat->idstr, idstr) && |
| 722 | (instance_id == se->compat->instance_id || |
| 723 | instance_id == se->alias_id)) |
| 724 | return se; |
| 725 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 726 | } |
| 727 | return NULL; |
| 728 | } |
| 729 | |
| 730 | typedef struct LoadStateEntry { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 731 | QLIST_ENTRY(LoadStateEntry) entry; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 732 | SaveStateEntry *se; |
| 733 | int section_id; |
| 734 | int version_id; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 735 | } LoadStateEntry; |
| 736 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 737 | int qemu_loadvm_state(QEMUFile *f) |
| 738 | { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 739 | QLIST_HEAD(, LoadStateEntry) loadvm_handlers = |
| 740 | QLIST_HEAD_INITIALIZER(loadvm_handlers); |
Juan Quintela | f4dbb8d | 2009-09-01 02:12:33 +0200 | [diff] [blame] | 741 | LoadStateEntry *le, *new_le; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 742 | uint8_t section_type; |
| 743 | unsigned int v; |
| 744 | int ret; |
| 745 | |
Luiz Capitulino | e1c37d0 | 2011-12-05 14:48:01 -0200 | [diff] [blame] | 746 | if (qemu_savevm_state_blocked(NULL)) { |
Alex Williamson | dc91212 | 2011-01-11 14:39:43 -0700 | [diff] [blame] | 747 | return -EINVAL; |
| 748 | } |
| 749 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 750 | v = qemu_get_be32(f); |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 751 | if (v != QEMU_VM_FILE_MAGIC) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 752 | return -EINVAL; |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 753 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 754 | |
| 755 | v = qemu_get_be32(f); |
Juan Quintela | bbfe140 | 2009-09-10 03:04:24 +0200 | [diff] [blame] | 756 | if (v == QEMU_VM_FILE_VERSION_COMPAT) { |
| 757 | fprintf(stderr, "SaveVM v2 format is obsolete and don't work anymore\n"); |
| 758 | return -ENOTSUP; |
| 759 | } |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 760 | if (v != QEMU_VM_FILE_VERSION) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 761 | return -ENOTSUP; |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 762 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 763 | |
| 764 | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) { |
| 765 | uint32_t instance_id, version_id, section_id; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 766 | SaveStateEntry *se; |
| 767 | char idstr[257]; |
| 768 | int len; |
| 769 | |
| 770 | switch (section_type) { |
| 771 | case QEMU_VM_SECTION_START: |
| 772 | case QEMU_VM_SECTION_FULL: |
| 773 | /* Read section start */ |
| 774 | section_id = qemu_get_be32(f); |
| 775 | len = qemu_get_byte(f); |
| 776 | qemu_get_buffer(f, (uint8_t *)idstr, len); |
| 777 | idstr[len] = 0; |
| 778 | instance_id = qemu_get_be32(f); |
| 779 | version_id = qemu_get_be32(f); |
| 780 | |
| 781 | /* Find savevm section */ |
| 782 | se = find_se(idstr, instance_id); |
| 783 | if (se == NULL) { |
| 784 | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id); |
| 785 | ret = -EINVAL; |
| 786 | goto out; |
| 787 | } |
| 788 | |
| 789 | /* Validate version */ |
| 790 | if (version_id > se->version_id) { |
| 791 | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n", |
| 792 | version_id, idstr, se->version_id); |
| 793 | ret = -EINVAL; |
| 794 | goto out; |
| 795 | } |
| 796 | |
| 797 | /* Add entry */ |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 798 | le = g_malloc0(sizeof(*le)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 799 | |
| 800 | le->se = se; |
| 801 | le->section_id = section_id; |
| 802 | le->version_id = version_id; |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 803 | QLIST_INSERT_HEAD(&loadvm_handlers, le, entry); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 804 | |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 805 | ret = vmstate_load(f, le->se, le->version_id); |
Juan Quintela | b5a22e4 | 2009-08-20 19:42:23 +0200 | [diff] [blame] | 806 | if (ret < 0) { |
| 807 | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n", |
| 808 | instance_id, idstr); |
| 809 | goto out; |
| 810 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 811 | break; |
| 812 | case QEMU_VM_SECTION_PART: |
| 813 | case QEMU_VM_SECTION_END: |
| 814 | section_id = qemu_get_be32(f); |
| 815 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 816 | QLIST_FOREACH(le, &loadvm_handlers, entry) { |
Juan Quintela | f4dbb8d | 2009-09-01 02:12:33 +0200 | [diff] [blame] | 817 | if (le->section_id == section_id) { |
| 818 | break; |
| 819 | } |
| 820 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 821 | if (le == NULL) { |
| 822 | fprintf(stderr, "Unknown savevm section %d\n", section_id); |
| 823 | ret = -EINVAL; |
| 824 | goto out; |
| 825 | } |
| 826 | |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 827 | ret = vmstate_load(f, le->se, le->version_id); |
Juan Quintela | b5a22e4 | 2009-08-20 19:42:23 +0200 | [diff] [blame] | 828 | if (ret < 0) { |
| 829 | fprintf(stderr, "qemu: warning: error while loading state section id %d\n", |
| 830 | section_id); |
| 831 | goto out; |
| 832 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 833 | break; |
| 834 | default: |
| 835 | fprintf(stderr, "Unknown savevm section type %d\n", section_type); |
| 836 | ret = -EINVAL; |
| 837 | goto out; |
| 838 | } |
| 839 | } |
| 840 | |
Jan Kiszka | ea375f9 | 2010-03-01 19:10:30 +0100 | [diff] [blame] | 841 | cpu_synchronize_all_post_init(); |
| 842 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 843 | ret = 0; |
| 844 | |
| 845 | out: |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 846 | QLIST_FOREACH_SAFE(le, &loadvm_handlers, entry, new_le) { |
| 847 | QLIST_REMOVE(le, entry); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 848 | g_free(le); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 849 | } |
| 850 | |
Juan Quintela | 42802d4 | 2011-10-05 01:14:46 +0200 | [diff] [blame] | 851 | if (ret == 0) { |
| 852 | ret = qemu_file_get_error(f); |
Juan Quintela | 624b9cc | 2011-10-05 01:02:52 +0200 | [diff] [blame] | 853 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 854 | |
| 855 | return ret; |
| 856 | } |
| 857 | |
Stefan Hajnoczi | 29d7827 | 2013-05-25 11:09:42 +0800 | [diff] [blame] | 858 | static BlockDriverState *find_vmstate_bs(void) |
| 859 | { |
| 860 | BlockDriverState *bs = NULL; |
| 861 | while ((bs = bdrv_next(bs))) { |
| 862 | if (bdrv_can_snapshot(bs)) { |
| 863 | return bs; |
| 864 | } |
| 865 | } |
| 866 | return NULL; |
| 867 | } |
| 868 | |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 869 | /* |
| 870 | * Deletes snapshots of a given name in all opened images. |
| 871 | */ |
| 872 | static int del_existing_snapshots(Monitor *mon, const char *name) |
| 873 | { |
| 874 | BlockDriverState *bs; |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 875 | QEMUSnapshotInfo sn1, *snapshot = &sn1; |
Wenchao Xia | a89d89d | 2013-09-11 14:04:33 +0800 | [diff] [blame] | 876 | Error *err = NULL; |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 877 | |
Markus Armbruster | dbc1359 | 2010-06-02 18:55:21 +0200 | [diff] [blame] | 878 | bs = NULL; |
| 879 | while ((bs = bdrv_next(bs))) { |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 880 | if (bdrv_can_snapshot(bs) && |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 881 | bdrv_snapshot_find(bs, snapshot, name) >= 0) { |
Wenchao Xia | a89d89d | 2013-09-11 14:04:33 +0800 | [diff] [blame] | 882 | bdrv_snapshot_delete_by_id_or_name(bs, name, &err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 883 | if (err) { |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 884 | monitor_printf(mon, |
Wenchao Xia | a89d89d | 2013-09-11 14:04:33 +0800 | [diff] [blame] | 885 | "Error while deleting snapshot on device '%s':" |
| 886 | " %s\n", |
| 887 | bdrv_get_device_name(bs), |
| 888 | error_get_pretty(err)); |
| 889 | error_free(err); |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 890 | return -1; |
| 891 | } |
| 892 | } |
| 893 | } |
| 894 | |
| 895 | return 0; |
| 896 | } |
| 897 | |
Luiz Capitulino | d54908a | 2009-08-28 15:27:13 -0300 | [diff] [blame] | 898 | void do_savevm(Monitor *mon, const QDict *qdict) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 899 | { |
| 900 | BlockDriverState *bs, *bs1; |
| 901 | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 902 | int ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 903 | QEMUFile *f; |
| 904 | int saved_vm_running; |
Kevin Wolf | c2c9a46 | 2011-11-16 11:35:54 +0100 | [diff] [blame] | 905 | uint64_t vm_state_size; |
Stefan Weil | 68b891e | 2013-01-07 22:20:27 +0100 | [diff] [blame] | 906 | qemu_timeval tv; |
Miguel Di Ciurcio Filho | 7d631a1 | 2010-08-04 14:55:49 -0300 | [diff] [blame] | 907 | struct tm tm; |
Luiz Capitulino | d54908a | 2009-08-28 15:27:13 -0300 | [diff] [blame] | 908 | const char *name = qdict_get_try_str(qdict, "name"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 909 | |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 910 | /* 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] | 911 | bs = NULL; |
| 912 | while ((bs = bdrv_next(bs))) { |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 913 | |
Markus Armbruster | 07b70bf | 2011-08-03 15:08:11 +0200 | [diff] [blame] | 914 | if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) { |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 915 | continue; |
| 916 | } |
| 917 | |
| 918 | if (!bdrv_can_snapshot(bs)) { |
| 919 | monitor_printf(mon, "Device '%s' is writable but does not support snapshots.\n", |
| 920 | bdrv_get_device_name(bs)); |
| 921 | return; |
| 922 | } |
| 923 | } |
| 924 | |
Stefan Hajnoczi | 29d7827 | 2013-05-25 11:09:42 +0800 | [diff] [blame] | 925 | bs = find_vmstate_bs(); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 926 | if (!bs) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 927 | monitor_printf(mon, "No block device can accept snapshots\n"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 928 | return; |
| 929 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 930 | |
Luiz Capitulino | 1354869 | 2011-07-29 15:36:43 -0300 | [diff] [blame] | 931 | saved_vm_running = runstate_is_running(); |
Luiz Capitulino | 0461d5a | 2011-09-30 14:45:27 -0300 | [diff] [blame] | 932 | vm_stop(RUN_STATE_SAVE_VM); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 933 | |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 934 | memset(sn, 0, sizeof(*sn)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 935 | |
| 936 | /* fill auxiliary fields */ |
Stefan Weil | 68b891e | 2013-01-07 22:20:27 +0100 | [diff] [blame] | 937 | qemu_gettimeofday(&tv); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 938 | sn->date_sec = tv.tv_sec; |
| 939 | sn->date_nsec = tv.tv_usec * 1000; |
Alex Bligh | bc72ad6 | 2013-08-21 16:03:08 +0100 | [diff] [blame] | 940 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 941 | |
Miguel Di Ciurcio Filho | 7d631a1 | 2010-08-04 14:55:49 -0300 | [diff] [blame] | 942 | if (name) { |
| 943 | ret = bdrv_snapshot_find(bs, old_sn, name); |
| 944 | if (ret >= 0) { |
| 945 | pstrcpy(sn->name, sizeof(sn->name), old_sn->name); |
| 946 | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str); |
| 947 | } else { |
| 948 | pstrcpy(sn->name, sizeof(sn->name), name); |
| 949 | } |
| 950 | } else { |
Blue Swirl | d7d9b52 | 2010-09-09 19:13:04 +0000 | [diff] [blame] | 951 | /* cast below needed for OpenBSD where tv_sec is still 'long' */ |
| 952 | localtime_r((const time_t *)&tv.tv_sec, &tm); |
Miguel Di Ciurcio Filho | 7d631a1 | 2010-08-04 14:55:49 -0300 | [diff] [blame] | 953 | 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] | 954 | } |
| 955 | |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 956 | /* Delete old snapshots of the same name */ |
Marcelo Tosatti | f139a41 | 2010-01-20 14:26:34 -0200 | [diff] [blame] | 957 | if (name && del_existing_snapshots(mon, name) < 0) { |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 958 | goto the_end; |
| 959 | } |
| 960 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 961 | /* save the VM state */ |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 962 | f = qemu_fopen_bdrv(bs, 1); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 963 | if (!f) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 964 | monitor_printf(mon, "Could not open VM state file\n"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 965 | goto the_end; |
| 966 | } |
Luiz Capitulino | e1c37d0 | 2011-12-05 14:48:01 -0200 | [diff] [blame] | 967 | ret = qemu_savevm_state(f); |
aliguori | 2d22b18 | 2008-12-11 21:06:49 +0000 | [diff] [blame] | 968 | vm_state_size = qemu_ftell(f); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 969 | qemu_fclose(f); |
| 970 | if (ret < 0) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 971 | monitor_printf(mon, "Error %d while writing VM\n", ret); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 972 | goto the_end; |
| 973 | } |
| 974 | |
| 975 | /* create the snapshots */ |
| 976 | |
Markus Armbruster | dbc1359 | 2010-06-02 18:55:21 +0200 | [diff] [blame] | 977 | bs1 = NULL; |
| 978 | while ((bs1 = bdrv_next(bs1))) { |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 979 | if (bdrv_can_snapshot(bs1)) { |
aliguori | 2d22b18 | 2008-12-11 21:06:49 +0000 | [diff] [blame] | 980 | /* Write VM state size only to the image that contains the state */ |
| 981 | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 982 | ret = bdrv_snapshot_create(bs1, sn); |
| 983 | if (ret < 0) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 984 | monitor_printf(mon, "Error while creating snapshot on '%s'\n", |
| 985 | bdrv_get_device_name(bs1)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 986 | } |
| 987 | } |
| 988 | } |
| 989 | |
| 990 | the_end: |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 991 | if (saved_vm_running) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 992 | vm_start(); |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 993 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 994 | } |
| 995 | |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 996 | void qmp_xen_save_devices_state(const char *filename, Error **errp) |
| 997 | { |
| 998 | QEMUFile *f; |
| 999 | int saved_vm_running; |
| 1000 | int ret; |
| 1001 | |
| 1002 | saved_vm_running = runstate_is_running(); |
| 1003 | vm_stop(RUN_STATE_SAVE_VM); |
| 1004 | |
| 1005 | f = qemu_fopen(filename, "wb"); |
| 1006 | if (!f) { |
Luiz Capitulino | 1befce9 | 2013-06-07 14:36:58 -0400 | [diff] [blame] | 1007 | error_setg_file_open(errp, errno, filename); |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 1008 | goto the_end; |
| 1009 | } |
| 1010 | ret = qemu_save_device_state(f); |
| 1011 | qemu_fclose(f); |
| 1012 | if (ret < 0) { |
| 1013 | error_set(errp, QERR_IO_ERROR); |
| 1014 | } |
| 1015 | |
| 1016 | the_end: |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 1017 | if (saved_vm_running) { |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 1018 | vm_start(); |
Eduardo Habkost | 38ff78d | 2013-11-28 12:01:13 -0200 | [diff] [blame] | 1019 | } |
Stefano Stabellini | a7ae835 | 2012-01-25 12:24:51 +0000 | [diff] [blame] | 1020 | } |
| 1021 | |
Markus Armbruster | 03cd465 | 2010-02-17 16:24:10 +0100 | [diff] [blame] | 1022 | int load_vmstate(const char *name) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1023 | { |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1024 | BlockDriverState *bs, *bs_vm_state; |
aliguori | 2d22b18 | 2008-12-11 21:06:49 +0000 | [diff] [blame] | 1025 | QEMUSnapshotInfo sn; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1026 | QEMUFile *f; |
Gerd Hoffmann | 751c6a1 | 2009-07-22 16:42:57 +0200 | [diff] [blame] | 1027 | int ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1028 | |
Stefan Hajnoczi | 29d7827 | 2013-05-25 11:09:42 +0800 | [diff] [blame] | 1029 | bs_vm_state = find_vmstate_bs(); |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1030 | if (!bs_vm_state) { |
| 1031 | error_report("No block device supports snapshots"); |
| 1032 | return -ENOTSUP; |
| 1033 | } |
| 1034 | |
| 1035 | /* Don't even try to load empty VM states */ |
| 1036 | ret = bdrv_snapshot_find(bs_vm_state, &sn, name); |
| 1037 | if (ret < 0) { |
| 1038 | return ret; |
| 1039 | } else if (sn.vm_state_size == 0) { |
Kevin Wolf | e11480d | 2011-03-01 10:48:12 +0100 | [diff] [blame] | 1040 | error_report("This is a disk-only snapshot. Revert to it offline " |
| 1041 | "using qemu-img."); |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1042 | return -EINVAL; |
| 1043 | } |
| 1044 | |
| 1045 | /* Verify if there is any device that doesn't support snapshots and is |
| 1046 | writable and check if the requested snapshot is available too. */ |
Markus Armbruster | dbc1359 | 2010-06-02 18:55:21 +0200 | [diff] [blame] | 1047 | bs = NULL; |
| 1048 | while ((bs = bdrv_next(bs))) { |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 1049 | |
Markus Armbruster | 07b70bf | 2011-08-03 15:08:11 +0200 | [diff] [blame] | 1050 | if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) { |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 1051 | continue; |
| 1052 | } |
| 1053 | |
| 1054 | if (!bdrv_can_snapshot(bs)) { |
| 1055 | error_report("Device '%s' is writable but does not support snapshots.", |
| 1056 | bdrv_get_device_name(bs)); |
| 1057 | return -ENOTSUP; |
| 1058 | } |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 1059 | |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1060 | ret = bdrv_snapshot_find(bs, &sn, name); |
| 1061 | if (ret < 0) { |
| 1062 | error_report("Device '%s' does not have the requested snapshot '%s'", |
| 1063 | bdrv_get_device_name(bs), name); |
| 1064 | return ret; |
| 1065 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1066 | } |
| 1067 | |
| 1068 | /* 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] | 1069 | bdrv_drain_all(); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1070 | |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1071 | bs = NULL; |
| 1072 | while ((bs = bdrv_next(bs))) { |
| 1073 | if (bdrv_can_snapshot(bs)) { |
| 1074 | ret = bdrv_snapshot_goto(bs, name); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1075 | if (ret < 0) { |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1076 | error_report("Error %d while activating snapshot '%s' on '%s'", |
| 1077 | ret, name, bdrv_get_device_name(bs)); |
| 1078 | return ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1079 | } |
| 1080 | } |
| 1081 | } |
| 1082 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1083 | /* restore the VM state */ |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1084 | f = qemu_fopen_bdrv(bs_vm_state, 0); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1085 | if (!f) { |
Markus Armbruster | 1ecda02 | 2010-02-18 17:25:24 +0100 | [diff] [blame] | 1086 | error_report("Could not open VM state file"); |
Juan Quintela | 05f2401 | 2009-08-20 19:42:22 +0200 | [diff] [blame] | 1087 | return -EINVAL; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1088 | } |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1089 | |
Jan Kiszka | 5a8a49d | 2011-06-14 18:29:45 +0200 | [diff] [blame] | 1090 | qemu_system_reset(VMRESET_SILENT); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1091 | ret = qemu_loadvm_state(f); |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1092 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1093 | qemu_fclose(f); |
| 1094 | if (ret < 0) { |
Markus Armbruster | 1ecda02 | 2010-02-18 17:25:24 +0100 | [diff] [blame] | 1095 | error_report("Error %d while loading VM state", ret); |
Juan Quintela | 05f2401 | 2009-08-20 19:42:22 +0200 | [diff] [blame] | 1096 | return ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1097 | } |
Miguel Di Ciurcio Filho | f0aa7a8 | 2010-07-19 15:25:01 -0300 | [diff] [blame] | 1098 | |
Juan Quintela | 05f2401 | 2009-08-20 19:42:22 +0200 | [diff] [blame] | 1099 | return 0; |
Juan Quintela | 7b63034 | 2009-08-20 19:42:20 +0200 | [diff] [blame] | 1100 | } |
| 1101 | |
Luiz Capitulino | d54908a | 2009-08-28 15:27:13 -0300 | [diff] [blame] | 1102 | void do_delvm(Monitor *mon, const QDict *qdict) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1103 | { |
| 1104 | BlockDriverState *bs, *bs1; |
Wenchao Xia | a89d89d | 2013-09-11 14:04:33 +0800 | [diff] [blame] | 1105 | Error *err = NULL; |
Luiz Capitulino | d54908a | 2009-08-28 15:27:13 -0300 | [diff] [blame] | 1106 | const char *name = qdict_get_str(qdict, "name"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1107 | |
Stefan Hajnoczi | 29d7827 | 2013-05-25 11:09:42 +0800 | [diff] [blame] | 1108 | bs = find_vmstate_bs(); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1109 | if (!bs) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1110 | monitor_printf(mon, "No block device supports snapshots\n"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1111 | return; |
| 1112 | } |
| 1113 | |
Markus Armbruster | dbc1359 | 2010-06-02 18:55:21 +0200 | [diff] [blame] | 1114 | bs1 = NULL; |
| 1115 | while ((bs1 = bdrv_next(bs1))) { |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 1116 | if (bdrv_can_snapshot(bs1)) { |
Wenchao Xia | a89d89d | 2013-09-11 14:04:33 +0800 | [diff] [blame] | 1117 | bdrv_snapshot_delete_by_id_or_name(bs, name, &err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1118 | if (err) { |
Wenchao Xia | a89d89d | 2013-09-11 14:04:33 +0800 | [diff] [blame] | 1119 | monitor_printf(mon, |
| 1120 | "Error while deleting snapshot on device '%s':" |
| 1121 | " %s\n", |
| 1122 | bdrv_get_device_name(bs), |
| 1123 | error_get_pretty(err)); |
| 1124 | error_free(err); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1125 | } |
| 1126 | } |
| 1127 | } |
| 1128 | } |
| 1129 | |
Wenchao Xia | 84f2d0e | 2013-01-14 14:06:25 +0800 | [diff] [blame] | 1130 | void do_info_snapshots(Monitor *mon, const QDict *qdict) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1131 | { |
| 1132 | BlockDriverState *bs, *bs1; |
Miguel Di Ciurcio Filho | f920991 | 2010-08-04 14:55:48 -0300 | [diff] [blame] | 1133 | QEMUSnapshotInfo *sn_tab, *sn, s, *sn_info = &s; |
| 1134 | int nb_sns, i, ret, available; |
| 1135 | int total; |
| 1136 | int *available_snapshots; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1137 | |
Stefan Hajnoczi | 29d7827 | 2013-05-25 11:09:42 +0800 | [diff] [blame] | 1138 | bs = find_vmstate_bs(); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1139 | if (!bs) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1140 | monitor_printf(mon, "No available block device supports snapshots\n"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1141 | return; |
| 1142 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1143 | |
| 1144 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
| 1145 | if (nb_sns < 0) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1146 | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1147 | return; |
| 1148 | } |
Miguel Di Ciurcio Filho | f920991 | 2010-08-04 14:55:48 -0300 | [diff] [blame] | 1149 | |
| 1150 | if (nb_sns == 0) { |
| 1151 | monitor_printf(mon, "There is no snapshot available.\n"); |
| 1152 | return; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1153 | } |
Miguel Di Ciurcio Filho | f920991 | 2010-08-04 14:55:48 -0300 | [diff] [blame] | 1154 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1155 | available_snapshots = g_malloc0(sizeof(int) * nb_sns); |
Miguel Di Ciurcio Filho | f920991 | 2010-08-04 14:55:48 -0300 | [diff] [blame] | 1156 | total = 0; |
| 1157 | for (i = 0; i < nb_sns; i++) { |
| 1158 | sn = &sn_tab[i]; |
| 1159 | available = 1; |
| 1160 | bs1 = NULL; |
| 1161 | |
| 1162 | while ((bs1 = bdrv_next(bs1))) { |
| 1163 | if (bdrv_can_snapshot(bs1) && bs1 != bs) { |
| 1164 | ret = bdrv_snapshot_find(bs1, sn_info, sn->id_str); |
| 1165 | if (ret < 0) { |
| 1166 | available = 0; |
| 1167 | break; |
| 1168 | } |
| 1169 | } |
| 1170 | } |
| 1171 | |
| 1172 | if (available) { |
| 1173 | available_snapshots[total] = i; |
| 1174 | total++; |
| 1175 | } |
| 1176 | } |
| 1177 | |
| 1178 | if (total > 0) { |
Wenchao Xia | 5b91704 | 2013-05-25 11:09:45 +0800 | [diff] [blame] | 1179 | bdrv_snapshot_dump((fprintf_function)monitor_printf, mon, NULL); |
| 1180 | monitor_printf(mon, "\n"); |
Miguel Di Ciurcio Filho | f920991 | 2010-08-04 14:55:48 -0300 | [diff] [blame] | 1181 | for (i = 0; i < total; i++) { |
| 1182 | sn = &sn_tab[available_snapshots[i]]; |
Wenchao Xia | 5b91704 | 2013-05-25 11:09:45 +0800 | [diff] [blame] | 1183 | bdrv_snapshot_dump((fprintf_function)monitor_printf, mon, sn); |
| 1184 | monitor_printf(mon, "\n"); |
Miguel Di Ciurcio Filho | f920991 | 2010-08-04 14:55:48 -0300 | [diff] [blame] | 1185 | } |
| 1186 | } else { |
| 1187 | monitor_printf(mon, "There is no suitable snapshot available\n"); |
| 1188 | } |
| 1189 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1190 | g_free(sn_tab); |
| 1191 | g_free(available_snapshots); |
Miguel Di Ciurcio Filho | f920991 | 2010-08-04 14:55:48 -0300 | [diff] [blame] | 1192 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1193 | } |
Avi Kivity | c5705a7 | 2011-12-20 15:59:12 +0200 | [diff] [blame] | 1194 | |
| 1195 | void vmstate_register_ram(MemoryRegion *mr, DeviceState *dev) |
| 1196 | { |
Avi Kivity | 1ddde08 | 2012-01-08 13:18:19 +0200 | [diff] [blame] | 1197 | 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] | 1198 | memory_region_name(mr), dev); |
| 1199 | } |
| 1200 | |
| 1201 | void vmstate_unregister_ram(MemoryRegion *mr, DeviceState *dev) |
| 1202 | { |
| 1203 | /* Nothing do to while the implementation is in RAMBlock */ |
| 1204 | } |
| 1205 | |
| 1206 | void vmstate_register_ram_global(MemoryRegion *mr) |
| 1207 | { |
| 1208 | vmstate_register_ram(mr, NULL); |
| 1209 | } |