4 * Copyright (c) 2003-2008 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
31 /* Needed early for CONFIG_BSD etc. */
32 #include "config-host.h"
35 #include <sys/times.h>
39 #include <sys/ioctl.h>
40 #include <sys/resource.h>
41 #include <sys/socket.h>
42 #include <netinet/in.h>
44 #include <arpa/inet.h>
47 #include <sys/select.h>
50 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
58 #include <linux/rtc.h>
66 #include <sys/timeb.h>
68 #define getopt_long_only getopt_long
69 #define memalign(align, size) malloc(size)
72 #include "qemu-common.h"
78 #include "qemu-timer.h"
79 #include "qemu-char.h"
80 #include "audio/audio.h"
81 #include "migration.h"
82 #include "qemu_socket.h"
83 #include "qemu-queue.h"
84 #include "qemu-timer.h"
88 #define SELF_ANNOUNCE_ROUNDS 5
91 #define ETH_P_RARP 0x8035
93 #define ARP_HTYPE_ETH 0x0001
94 #define ARP_PTYPE_IP 0x0800
95 #define ARP_OP_REQUEST_REV 0x3
97 static int announce_self_create(uint8_t *buf,
100 /* Ethernet header. */
101 memset(buf, 0xff, 6); /* destination MAC addr */
102 memcpy(buf + 6, mac_addr, 6); /* source MAC addr */
103 *(uint16_t *)(buf + 12) = htons(ETH_P_RARP); /* ethertype */
106 *(uint16_t *)(buf + 14) = htons(ARP_HTYPE_ETH); /* hardware addr space */
107 *(uint16_t *)(buf + 16) = htons(ARP_PTYPE_IP); /* protocol addr space */
108 *(buf + 18) = 6; /* hardware addr length (ethernet) */
109 *(buf + 19) = 4; /* protocol addr length (IPv4) */
110 *(uint16_t *)(buf + 20) = htons(ARP_OP_REQUEST_REV); /* opcode */
111 memcpy(buf + 22, mac_addr, 6); /* source hw addr */
112 memset(buf + 28, 0x00, 4); /* source protocol addr */
113 memcpy(buf + 32, mac_addr, 6); /* target hw addr */
114 memset(buf + 38, 0x00, 4); /* target protocol addr */
116 /* Padding to get up to 60 bytes (ethernet min packet size, minus FCS). */
117 memset(buf + 42, 0x00, 18);
119 return 60; /* len (FCS will be added by hardware) */
122 static void qemu_announce_self_iter(NICState *nic, void *opaque)
127 len = announce_self_create(buf, nic->conf->macaddr.a);
129 qemu_send_packet_raw(&nic->nc, buf, len);
133 static void qemu_announce_self_once(void *opaque)
135 static int count = SELF_ANNOUNCE_ROUNDS;
136 QEMUTimer *timer = *(QEMUTimer **)opaque;
138 qemu_foreach_nic(qemu_announce_self_iter, NULL);
141 /* delay 50ms, 150ms, 250ms, ... */
142 qemu_mod_timer(timer, qemu_get_clock_ms(rt_clock) +
143 50 + (SELF_ANNOUNCE_ROUNDS - count - 1) * 100);
145 qemu_del_timer(timer);
146 qemu_free_timer(timer);
150 void qemu_announce_self(void)
152 static QEMUTimer *timer;
153 timer = qemu_new_timer_ms(rt_clock, qemu_announce_self_once, &timer);
154 qemu_announce_self_once(&timer);
157 /***********************************************************/
158 /* savevm/loadvm support */
160 #define IO_BUF_SIZE 32768
163 QEMUFilePutBufferFunc *put_buffer;
164 QEMUFileGetBufferFunc *get_buffer;
165 QEMUFileCloseFunc *close;
166 QEMUFileRateLimit *rate_limit;
167 QEMUFileSetRateLimit *set_rate_limit;
168 QEMUFileGetRateLimit *get_rate_limit;
172 int64_t buf_offset; /* start of buffer when writing, end of buffer
175 int buf_size; /* 0 when writing */
176 uint8_t buf[IO_BUF_SIZE];
181 typedef struct QEMUFileStdio
187 typedef struct QEMUFileSocket
193 static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
195 QEMUFileSocket *s = opaque;
199 len = qemu_recv(s->fd, buf, size, 0);
200 } while (len == -1 && socket_error() == EINTR);
203 len = -socket_error();
208 static int socket_close(void *opaque)
210 QEMUFileSocket *s = opaque;
215 static int stdio_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size)
217 QEMUFileStdio *s = opaque;
218 return fwrite(buf, 1, size, s->stdio_file);
221 static int stdio_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
223 QEMUFileStdio *s = opaque;
224 FILE *fp = s->stdio_file;
229 bytes = fread(buf, 1, size, fp);
230 } while ((bytes == 0) && ferror(fp) && (errno == EINTR));
234 static int stdio_pclose(void *opaque)
236 QEMUFileStdio *s = opaque;
238 ret = pclose(s->stdio_file);
246 static int stdio_fclose(void *opaque)
248 QEMUFileStdio *s = opaque;
250 if (fclose(s->stdio_file) == EOF) {
257 QEMUFile *qemu_popen(FILE *stdio_file, const char *mode)
261 if (stdio_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) {
262 fprintf(stderr, "qemu_popen: Argument validity check failed\n");
266 s = g_malloc0(sizeof(QEMUFileStdio));
268 s->stdio_file = stdio_file;
271 s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_pclose,
274 s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_pclose,
280 QEMUFile *qemu_popen_cmd(const char *command, const char *mode)
284 popen_file = popen(command, mode);
285 if(popen_file == NULL) {
289 return qemu_popen(popen_file, mode);
292 int qemu_stdio_fd(QEMUFile *f)
297 p = (QEMUFileStdio *)f->opaque;
298 fd = fileno(p->stdio_file);
303 QEMUFile *qemu_fdopen(int fd, const char *mode)
308 (mode[0] != 'r' && mode[0] != 'w') ||
309 mode[1] != 'b' || mode[2] != 0) {
310 fprintf(stderr, "qemu_fdopen: Argument validity check failed\n");
314 s = g_malloc0(sizeof(QEMUFileStdio));
315 s->stdio_file = fdopen(fd, mode);
320 s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_fclose,
323 s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_fclose,
333 QEMUFile *qemu_fopen_socket(int fd)
335 QEMUFileSocket *s = g_malloc0(sizeof(QEMUFileSocket));
338 s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close,
343 static int file_put_buffer(void *opaque, const uint8_t *buf,
344 int64_t pos, int size)
346 QEMUFileStdio *s = opaque;
347 fseek(s->stdio_file, pos, SEEK_SET);
348 return fwrite(buf, 1, size, s->stdio_file);
351 static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
353 QEMUFileStdio *s = opaque;
354 fseek(s->stdio_file, pos, SEEK_SET);
355 return fread(buf, 1, size, s->stdio_file);
358 QEMUFile *qemu_fopen(const char *filename, const char *mode)
363 (mode[0] != 'r' && mode[0] != 'w') ||
364 mode[1] != 'b' || mode[2] != 0) {
365 fprintf(stderr, "qemu_fopen: Argument validity check failed\n");
369 s = g_malloc0(sizeof(QEMUFileStdio));
371 s->stdio_file = fopen(filename, mode);
376 s->file = qemu_fopen_ops(s, file_put_buffer, NULL, stdio_fclose,
379 s->file = qemu_fopen_ops(s, NULL, file_get_buffer, stdio_fclose,
388 static int block_put_buffer(void *opaque, const uint8_t *buf,
389 int64_t pos, int size)
391 bdrv_save_vmstate(opaque, buf, pos, size);
395 static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
397 return bdrv_load_vmstate(opaque, buf, pos, size);
400 static int bdrv_fclose(void *opaque)
405 static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable)
408 return qemu_fopen_ops(bs, block_put_buffer, NULL, bdrv_fclose,
410 return qemu_fopen_ops(bs, NULL, block_get_buffer, bdrv_fclose, NULL, NULL, NULL);
413 QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer,
414 QEMUFileGetBufferFunc *get_buffer,
415 QEMUFileCloseFunc *close,
416 QEMUFileRateLimit *rate_limit,
417 QEMUFileSetRateLimit *set_rate_limit,
418 QEMUFileGetRateLimit *get_rate_limit)
422 f = g_malloc0(sizeof(QEMUFile));
425 f->put_buffer = put_buffer;
426 f->get_buffer = get_buffer;
428 f->rate_limit = rate_limit;
429 f->set_rate_limit = set_rate_limit;
430 f->get_rate_limit = get_rate_limit;
436 int qemu_file_get_error(QEMUFile *f)
438 return f->last_error;
441 void qemu_file_set_error(QEMUFile *f, int ret)
446 /** Sets last_error conditionally
448 * Sets last_error only if ret is negative _and_ no error
451 static void qemu_file_set_if_error(QEMUFile *f, int ret)
453 if (ret < 0 && !f->last_error) {
454 qemu_file_set_error(f, ret);
458 /** Flushes QEMUFile buffer
460 * In case of error, last_error is set.
462 void qemu_fflush(QEMUFile *f)
467 if (f->is_write && f->buf_index > 0) {
470 len = f->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index);
472 f->buf_offset += f->buf_index;
474 qemu_file_set_error(f, -EINVAL);
479 static void qemu_fill_buffer(QEMUFile *f)
490 pending = f->buf_size - f->buf_index;
492 memmove(f->buf, f->buf + f->buf_index, pending);
495 f->buf_size = pending;
497 len = f->get_buffer(f->opaque, f->buf + pending, f->buf_offset,
498 IO_BUF_SIZE - pending);
501 f->buf_offset += len;
502 } else if (len == 0) {
503 f->last_error = -EIO;
504 } else if (len != -EAGAIN)
505 qemu_file_set_error(f, len);
508 /** Calls close function and set last_error if needed
510 * Internal function. qemu_fflush() must be called before this.
512 * Returns f->close() return value, or 0 if close function is not set.
514 static int qemu_close(QEMUFile *f)
518 ret = f->close(f->opaque);
519 qemu_file_set_if_error(f, ret);
526 * Returns negative error value if any error happened on previous operations or
527 * while closing the file. Returns 0 or positive number on success.
529 * The meaning of return value on success depends on the specific backend
532 int qemu_fclose(QEMUFile *f)
537 /* If any error was spotted before closing, we should report it
538 * instead of the close() return value.
547 void qemu_file_put_notify(QEMUFile *f)
549 f->put_buffer(f->opaque, NULL, 0, 0);
552 void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size)
556 if (!f->last_error && f->is_write == 0 && f->buf_index > 0) {
558 "Attempted to write to buffer while read buffer is not empty\n");
562 while (!f->last_error && size > 0) {
563 l = IO_BUF_SIZE - f->buf_index;
566 memcpy(f->buf + f->buf_index, buf, l);
571 if (f->buf_index >= IO_BUF_SIZE)
576 void qemu_put_byte(QEMUFile *f, int v)
578 if (!f->last_error && f->is_write == 0 && f->buf_index > 0) {
580 "Attempted to write to buffer while read buffer is not empty\n");
584 f->buf[f->buf_index++] = v;
586 if (f->buf_index >= IO_BUF_SIZE)
590 static void qemu_file_skip(QEMUFile *f, int size)
592 if (f->buf_index + size <= f->buf_size) {
593 f->buf_index += size;
597 static int qemu_peek_buffer(QEMUFile *f, uint8_t *buf, int size, size_t offset)
606 index = f->buf_index + offset;
607 pending = f->buf_size - index;
608 if (pending < size) {
610 index = f->buf_index + offset;
611 pending = f->buf_size - index;
617 if (size > pending) {
621 memcpy(buf, f->buf + index, size);
625 int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size)
630 while (pending > 0) {
633 res = qemu_peek_buffer(f, buf, pending, 0);
637 qemu_file_skip(f, res);
645 static int qemu_peek_byte(QEMUFile *f, int offset)
647 int index = f->buf_index + offset;
653 if (index >= f->buf_size) {
655 index = f->buf_index + offset;
656 if (index >= f->buf_size) {
660 return f->buf[index];
663 int qemu_get_byte(QEMUFile *f)
667 result = qemu_peek_byte(f, 0);
668 qemu_file_skip(f, 1);
672 int64_t qemu_ftell(QEMUFile *f)
674 return f->buf_offset - f->buf_size + f->buf_index;
677 int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence)
679 if (whence == SEEK_SET) {
681 } else if (whence == SEEK_CUR) {
682 pos += qemu_ftell(f);
684 /* SEEK_END not supported */
698 int qemu_file_rate_limit(QEMUFile *f)
701 return f->rate_limit(f->opaque);
706 int64_t qemu_file_get_rate_limit(QEMUFile *f)
708 if (f->get_rate_limit)
709 return f->get_rate_limit(f->opaque);
714 int64_t qemu_file_set_rate_limit(QEMUFile *f, int64_t new_rate)
716 /* any failed or completed migration keeps its state to allow probing of
717 * migration data, but has no associated file anymore */
718 if (f && f->set_rate_limit)
719 return f->set_rate_limit(f->opaque, new_rate);
724 void qemu_put_be16(QEMUFile *f, unsigned int v)
726 qemu_put_byte(f, v >> 8);
730 void qemu_put_be32(QEMUFile *f, unsigned int v)
732 qemu_put_byte(f, v >> 24);
733 qemu_put_byte(f, v >> 16);
734 qemu_put_byte(f, v >> 8);
738 void qemu_put_be64(QEMUFile *f, uint64_t v)
740 qemu_put_be32(f, v >> 32);
744 unsigned int qemu_get_be16(QEMUFile *f)
747 v = qemu_get_byte(f) << 8;
748 v |= qemu_get_byte(f);
752 unsigned int qemu_get_be32(QEMUFile *f)
755 v = qemu_get_byte(f) << 24;
756 v |= qemu_get_byte(f) << 16;
757 v |= qemu_get_byte(f) << 8;
758 v |= qemu_get_byte(f);
762 uint64_t qemu_get_be64(QEMUFile *f)
765 v = (uint64_t)qemu_get_be32(f) << 32;
766 v |= qemu_get_be32(f);
773 void qemu_put_timer(QEMUFile *f, QEMUTimer *ts)
775 uint64_t expire_time;
777 expire_time = qemu_timer_expire_time_ns(ts);
778 qemu_put_be64(f, expire_time);
781 void qemu_get_timer(QEMUFile *f, QEMUTimer *ts)
783 uint64_t expire_time;
785 expire_time = qemu_get_be64(f);
786 if (expire_time != -1) {
787 qemu_mod_timer_ns(ts, expire_time);
796 static int get_bool(QEMUFile *f, void *pv, size_t size)
799 *v = qemu_get_byte(f);
803 static void put_bool(QEMUFile *f, void *pv, size_t size)
806 qemu_put_byte(f, *v);
809 const VMStateInfo vmstate_info_bool = {
817 static int get_int8(QEMUFile *f, void *pv, size_t size)
824 static void put_int8(QEMUFile *f, void *pv, size_t size)
830 const VMStateInfo vmstate_info_int8 = {
838 static int get_int16(QEMUFile *f, void *pv, size_t size)
841 qemu_get_sbe16s(f, v);
845 static void put_int16(QEMUFile *f, void *pv, size_t size)
848 qemu_put_sbe16s(f, v);
851 const VMStateInfo vmstate_info_int16 = {
859 static int get_int32(QEMUFile *f, void *pv, size_t size)
862 qemu_get_sbe32s(f, v);
866 static void put_int32(QEMUFile *f, void *pv, size_t size)
869 qemu_put_sbe32s(f, v);
872 const VMStateInfo vmstate_info_int32 = {
878 /* 32 bit int. See that the received value is the same than the one
881 static int get_int32_equal(QEMUFile *f, void *pv, size_t size)
885 qemu_get_sbe32s(f, &v2);
892 const VMStateInfo vmstate_info_int32_equal = {
893 .name = "int32 equal",
894 .get = get_int32_equal,
898 /* 32 bit int. See that the received value is the less or the same
899 than the one in the field */
901 static int get_int32_le(QEMUFile *f, void *pv, size_t size)
905 qemu_get_sbe32s(f, &new);
912 const VMStateInfo vmstate_info_int32_le = {
913 .name = "int32 equal",
920 static int get_int64(QEMUFile *f, void *pv, size_t size)
923 qemu_get_sbe64s(f, v);
927 static void put_int64(QEMUFile *f, void *pv, size_t size)
930 qemu_put_sbe64s(f, v);
933 const VMStateInfo vmstate_info_int64 = {
939 /* 8 bit unsigned int */
941 static int get_uint8(QEMUFile *f, void *pv, size_t size)
948 static void put_uint8(QEMUFile *f, void *pv, size_t size)
954 const VMStateInfo vmstate_info_uint8 = {
960 /* 16 bit unsigned int */
962 static int get_uint16(QEMUFile *f, void *pv, size_t size)
965 qemu_get_be16s(f, v);
969 static void put_uint16(QEMUFile *f, void *pv, size_t size)
972 qemu_put_be16s(f, v);
975 const VMStateInfo vmstate_info_uint16 = {
981 /* 32 bit unsigned int */
983 static int get_uint32(QEMUFile *f, void *pv, size_t size)
986 qemu_get_be32s(f, v);
990 static void put_uint32(QEMUFile *f, void *pv, size_t size)
993 qemu_put_be32s(f, v);
996 const VMStateInfo vmstate_info_uint32 = {
1002 /* 32 bit uint. See that the received value is the same than the one
1005 static int get_uint32_equal(QEMUFile *f, void *pv, size_t size)
1009 qemu_get_be32s(f, &v2);
1017 const VMStateInfo vmstate_info_uint32_equal = {
1018 .name = "uint32 equal",
1019 .get = get_uint32_equal,
1023 /* 64 bit unsigned int */
1025 static int get_uint64(QEMUFile *f, void *pv, size_t size)
1028 qemu_get_be64s(f, v);
1032 static void put_uint64(QEMUFile *f, void *pv, size_t size)
1035 qemu_put_be64s(f, v);
1038 const VMStateInfo vmstate_info_uint64 = {
1044 /* 8 bit int. See that the received value is the same than the one
1047 static int get_uint8_equal(QEMUFile *f, void *pv, size_t size)
1051 qemu_get_8s(f, &v2);
1058 const VMStateInfo vmstate_info_uint8_equal = {
1059 .name = "uint8 equal",
1060 .get = get_uint8_equal,
1064 /* 16 bit unsigned int int. See that the received value is the same than the one
1067 static int get_uint16_equal(QEMUFile *f, void *pv, size_t size)
1071 qemu_get_be16s(f, &v2);
1078 const VMStateInfo vmstate_info_uint16_equal = {
1079 .name = "uint16 equal",
1080 .get = get_uint16_equal,
1086 static int get_timer(QEMUFile *f, void *pv, size_t size)
1089 qemu_get_timer(f, v);
1093 static void put_timer(QEMUFile *f, void *pv, size_t size)
1096 qemu_put_timer(f, v);
1099 const VMStateInfo vmstate_info_timer = {
1105 /* uint8_t buffers */
1107 static int get_buffer(QEMUFile *f, void *pv, size_t size)
1110 qemu_get_buffer(f, v, size);
1114 static void put_buffer(QEMUFile *f, void *pv, size_t size)
1117 qemu_put_buffer(f, v, size);
1120 const VMStateInfo vmstate_info_buffer = {
1126 /* unused buffers: space that was used for some fields that are
1127 not useful anymore */
1129 static int get_unused_buffer(QEMUFile *f, void *pv, size_t size)
1135 block_len = MIN(sizeof(buf), size);
1137 qemu_get_buffer(f, buf, block_len);
1142 static void put_unused_buffer(QEMUFile *f, void *pv, size_t size)
1144 static const uint8_t buf[1024];
1148 block_len = MIN(sizeof(buf), size);
1150 qemu_put_buffer(f, buf, block_len);
1154 const VMStateInfo vmstate_info_unused_buffer = {
1155 .name = "unused_buffer",
1156 .get = get_unused_buffer,
1157 .put = put_unused_buffer,
1160 typedef struct CompatEntry {
1165 typedef struct SaveStateEntry {
1166 QTAILQ_ENTRY(SaveStateEntry) entry;
1172 SaveSetParamsHandler *set_params;
1173 SaveLiveStateHandler *save_live_state;
1174 SaveStateHandler *save_state;
1175 LoadStateHandler *load_state;
1176 const VMStateDescription *vmsd;
1178 CompatEntry *compat;
1183 static QTAILQ_HEAD(savevm_handlers, SaveStateEntry) savevm_handlers =
1184 QTAILQ_HEAD_INITIALIZER(savevm_handlers);
1185 static int global_section_id;
1187 static int calculate_new_instance_id(const char *idstr)
1190 int instance_id = 0;
1192 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
1193 if (strcmp(idstr, se->idstr) == 0
1194 && instance_id <= se->instance_id) {
1195 instance_id = se->instance_id + 1;
1201 static int calculate_compat_instance_id(const char *idstr)
1204 int instance_id = 0;
1206 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
1210 if (strcmp(idstr, se->compat->idstr) == 0
1211 && instance_id <= se->compat->instance_id) {
1212 instance_id = se->compat->instance_id + 1;
1218 /* TODO: Individual devices generally have very little idea about the rest
1219 of the system, so instance_id should be removed/replaced.
1220 Meanwhile pass -1 as instance_id if you do not already have a clearly
1221 distinguishing id for all instances of your device class. */
1222 int register_savevm_live(DeviceState *dev,
1226 SaveSetParamsHandler *set_params,
1227 SaveLiveStateHandler *save_live_state,
1228 SaveStateHandler *save_state,
1229 LoadStateHandler *load_state,
1234 se = g_malloc0(sizeof(SaveStateEntry));
1235 se->version_id = version_id;
1236 se->section_id = global_section_id++;
1237 se->set_params = set_params;
1238 se->save_live_state = save_live_state;
1239 se->save_state = save_state;
1240 se->load_state = load_state;
1241 se->opaque = opaque;
1245 if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) {
1246 char *id = dev->parent_bus->info->get_dev_path(dev);
1248 pstrcpy(se->idstr, sizeof(se->idstr), id);
1249 pstrcat(se->idstr, sizeof(se->idstr), "/");
1252 se->compat = g_malloc0(sizeof(CompatEntry));
1253 pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), idstr);
1254 se->compat->instance_id = instance_id == -1 ?
1255 calculate_compat_instance_id(idstr) : instance_id;
1259 pstrcat(se->idstr, sizeof(se->idstr), idstr);
1261 if (instance_id == -1) {
1262 se->instance_id = calculate_new_instance_id(se->idstr);
1264 se->instance_id = instance_id;
1266 assert(!se->compat || se->instance_id == 0);
1267 /* add at the end of list */
1268 QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry);
1272 int register_savevm(DeviceState *dev,
1276 SaveStateHandler *save_state,
1277 LoadStateHandler *load_state,
1280 return register_savevm_live(dev, idstr, instance_id, version_id,
1281 NULL, NULL, save_state, load_state, opaque);
1284 void unregister_savevm(DeviceState *dev, const char *idstr, void *opaque)
1286 SaveStateEntry *se, *new_se;
1289 if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) {
1290 char *path = dev->parent_bus->info->get_dev_path(dev);
1292 pstrcpy(id, sizeof(id), path);
1293 pstrcat(id, sizeof(id), "/");
1297 pstrcat(id, sizeof(id), idstr);
1299 QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) {
1300 if (strcmp(se->idstr, id) == 0 && se->opaque == opaque) {
1301 QTAILQ_REMOVE(&savevm_handlers, se, entry);
1310 int vmstate_register_with_alias_id(DeviceState *dev, int instance_id,
1311 const VMStateDescription *vmsd,
1312 void *opaque, int alias_id,
1313 int required_for_version)
1317 /* If this triggers, alias support can be dropped for the vmsd. */
1318 assert(alias_id == -1 || required_for_version >= vmsd->minimum_version_id);
1320 se = g_malloc0(sizeof(SaveStateEntry));
1321 se->version_id = vmsd->version_id;
1322 se->section_id = global_section_id++;
1323 se->save_live_state = NULL;
1324 se->save_state = NULL;
1325 se->load_state = NULL;
1326 se->opaque = opaque;
1328 se->alias_id = alias_id;
1329 se->no_migrate = vmsd->unmigratable;
1331 if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) {
1332 char *id = dev->parent_bus->info->get_dev_path(dev);
1334 pstrcpy(se->idstr, sizeof(se->idstr), id);
1335 pstrcat(se->idstr, sizeof(se->idstr), "/");
1338 se->compat = g_malloc0(sizeof(CompatEntry));
1339 pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), vmsd->name);
1340 se->compat->instance_id = instance_id == -1 ?
1341 calculate_compat_instance_id(vmsd->name) : instance_id;
1345 pstrcat(se->idstr, sizeof(se->idstr), vmsd->name);
1347 if (instance_id == -1) {
1348 se->instance_id = calculate_new_instance_id(se->idstr);
1350 se->instance_id = instance_id;
1352 assert(!se->compat || se->instance_id == 0);
1353 /* add at the end of list */
1354 QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry);
1358 int vmstate_register(DeviceState *dev, int instance_id,
1359 const VMStateDescription *vmsd, void *opaque)
1361 return vmstate_register_with_alias_id(dev, instance_id, vmsd,
1365 void vmstate_unregister(DeviceState *dev, const VMStateDescription *vmsd,
1368 SaveStateEntry *se, *new_se;
1370 QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) {
1371 if (se->vmsd == vmsd && se->opaque == opaque) {
1372 QTAILQ_REMOVE(&savevm_handlers, se, entry);
1381 static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd,
1383 static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd,
1386 int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
1387 void *opaque, int version_id)
1389 VMStateField *field = vmsd->fields;
1392 if (version_id > vmsd->version_id) {
1395 if (version_id < vmsd->minimum_version_id_old) {
1398 if (version_id < vmsd->minimum_version_id) {
1399 return vmsd->load_state_old(f, opaque, version_id);
1401 if (vmsd->pre_load) {
1402 int ret = vmsd->pre_load(opaque);
1406 while(field->name) {
1407 if ((field->field_exists &&
1408 field->field_exists(opaque, version_id)) ||
1409 (!field->field_exists &&
1410 field->version_id <= version_id)) {
1411 void *base_addr = opaque + field->offset;
1413 int size = field->size;
1415 if (field->flags & VMS_VBUFFER) {
1416 size = *(int32_t *)(opaque+field->size_offset);
1417 if (field->flags & VMS_MULTIPLY) {
1418 size *= field->size;
1421 if (field->flags & VMS_ARRAY) {
1422 n_elems = field->num;
1423 } else if (field->flags & VMS_VARRAY_INT32) {
1424 n_elems = *(int32_t *)(opaque+field->num_offset);
1425 } else if (field->flags & VMS_VARRAY_UINT32) {
1426 n_elems = *(uint32_t *)(opaque+field->num_offset);
1427 } else if (field->flags & VMS_VARRAY_UINT16) {
1428 n_elems = *(uint16_t *)(opaque+field->num_offset);
1429 } else if (field->flags & VMS_VARRAY_UINT8) {
1430 n_elems = *(uint8_t *)(opaque+field->num_offset);
1432 if (field->flags & VMS_POINTER) {
1433 base_addr = *(void **)base_addr + field->start;
1435 for (i = 0; i < n_elems; i++) {
1436 void *addr = base_addr + size * i;
1438 if (field->flags & VMS_ARRAY_OF_POINTER) {
1439 addr = *(void **)addr;
1441 if (field->flags & VMS_STRUCT) {
1442 ret = vmstate_load_state(f, field->vmsd, addr, field->vmsd->version_id);
1444 ret = field->info->get(f, addr, size);
1454 ret = vmstate_subsection_load(f, vmsd, opaque);
1458 if (vmsd->post_load) {
1459 return vmsd->post_load(opaque, version_id);
1464 void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd,
1467 VMStateField *field = vmsd->fields;
1469 if (vmsd->pre_save) {
1470 vmsd->pre_save(opaque);
1472 while(field->name) {
1473 if (!field->field_exists ||
1474 field->field_exists(opaque, vmsd->version_id)) {
1475 void *base_addr = opaque + field->offset;
1477 int size = field->size;
1479 if (field->flags & VMS_VBUFFER) {
1480 size = *(int32_t *)(opaque+field->size_offset);
1481 if (field->flags & VMS_MULTIPLY) {
1482 size *= field->size;
1485 if (field->flags & VMS_ARRAY) {
1486 n_elems = field->num;
1487 } else if (field->flags & VMS_VARRAY_INT32) {
1488 n_elems = *(int32_t *)(opaque+field->num_offset);
1489 } else if (field->flags & VMS_VARRAY_UINT16) {
1490 n_elems = *(uint16_t *)(opaque+field->num_offset);
1491 } else if (field->flags & VMS_VARRAY_UINT8) {
1492 n_elems = *(uint8_t *)(opaque+field->num_offset);
1494 if (field->flags & VMS_POINTER) {
1495 base_addr = *(void **)base_addr + field->start;
1497 for (i = 0; i < n_elems; i++) {
1498 void *addr = base_addr + size * i;
1500 if (field->flags & VMS_ARRAY_OF_POINTER) {
1501 addr = *(void **)addr;
1503 if (field->flags & VMS_STRUCT) {
1504 vmstate_save_state(f, field->vmsd, addr);
1506 field->info->put(f, addr, size);
1512 vmstate_subsection_save(f, vmsd, opaque);
1515 static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id)
1517 if (!se->vmsd) { /* Old style */
1518 return se->load_state(f, se->opaque, version_id);
1520 return vmstate_load_state(f, se->vmsd, se->opaque, version_id);
1523 static void vmstate_save(QEMUFile *f, SaveStateEntry *se)
1525 if (!se->vmsd) { /* Old style */
1526 se->save_state(f, se->opaque);
1529 vmstate_save_state(f,se->vmsd, se->opaque);
1532 #define QEMU_VM_FILE_MAGIC 0x5145564d
1533 #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002
1534 #define QEMU_VM_FILE_VERSION 0x00000003
1536 #define QEMU_VM_EOF 0x00
1537 #define QEMU_VM_SECTION_START 0x01
1538 #define QEMU_VM_SECTION_PART 0x02
1539 #define QEMU_VM_SECTION_END 0x03
1540 #define QEMU_VM_SECTION_FULL 0x04
1541 #define QEMU_VM_SUBSECTION 0x05
1543 bool qemu_savevm_state_blocked(Monitor *mon)
1547 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
1548 if (se->no_migrate) {
1549 monitor_printf(mon, "state blocked by non-migratable device '%s'\n",
1557 int qemu_savevm_state_begin(Monitor *mon, QEMUFile *f, int blk_enable,
1563 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
1564 if(se->set_params == NULL) {
1567 se->set_params(blk_enable, shared, se->opaque);
1570 qemu_put_be32(f, QEMU_VM_FILE_MAGIC);
1571 qemu_put_be32(f, QEMU_VM_FILE_VERSION);
1573 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
1576 if (se->save_live_state == NULL)
1580 qemu_put_byte(f, QEMU_VM_SECTION_START);
1581 qemu_put_be32(f, se->section_id);
1584 len = strlen(se->idstr);
1585 qemu_put_byte(f, len);
1586 qemu_put_buffer(f, (uint8_t *)se->idstr, len);
1588 qemu_put_be32(f, se->instance_id);
1589 qemu_put_be32(f, se->version_id);
1591 ret = se->save_live_state(mon, f, QEMU_VM_SECTION_START, se->opaque);
1593 qemu_savevm_state_cancel(mon, f);
1597 ret = qemu_file_get_error(f);
1599 qemu_savevm_state_cancel(mon, f);
1607 * this function has three return values:
1608 * negative: there was one error, and we have -errno.
1609 * 0 : We haven't finished, caller have to go again
1610 * 1 : We have finished, we can go to complete phase
1612 int qemu_savevm_state_iterate(Monitor *mon, QEMUFile *f)
1617 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
1618 if (se->save_live_state == NULL)
1622 qemu_put_byte(f, QEMU_VM_SECTION_PART);
1623 qemu_put_be32(f, se->section_id);
1625 ret = se->save_live_state(mon, f, QEMU_VM_SECTION_PART, se->opaque);
1627 /* Do not proceed to the next vmstate before this one reported
1628 completion of the current stage. This serializes the migration
1629 and reduces the probability that a faster changing state is
1630 synchronized over and over again. */
1637 ret = qemu_file_get_error(f);
1639 qemu_savevm_state_cancel(mon, f);
1644 int qemu_savevm_state_complete(Monitor *mon, QEMUFile *f)
1649 cpu_synchronize_all_states();
1651 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
1652 if (se->save_live_state == NULL)
1656 qemu_put_byte(f, QEMU_VM_SECTION_END);
1657 qemu_put_be32(f, se->section_id);
1659 ret = se->save_live_state(mon, f, QEMU_VM_SECTION_END, se->opaque);
1665 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
1668 if (se->save_state == NULL && se->vmsd == NULL)
1672 qemu_put_byte(f, QEMU_VM_SECTION_FULL);
1673 qemu_put_be32(f, se->section_id);
1676 len = strlen(se->idstr);
1677 qemu_put_byte(f, len);
1678 qemu_put_buffer(f, (uint8_t *)se->idstr, len);
1680 qemu_put_be32(f, se->instance_id);
1681 qemu_put_be32(f, se->version_id);
1683 vmstate_save(f, se);
1686 qemu_put_byte(f, QEMU_VM_EOF);
1688 return qemu_file_get_error(f);
1691 void qemu_savevm_state_cancel(Monitor *mon, QEMUFile *f)
1695 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
1696 if (se->save_live_state) {
1697 se->save_live_state(mon, f, -1, se->opaque);
1702 static int qemu_savevm_state(Monitor *mon, QEMUFile *f)
1706 if (qemu_savevm_state_blocked(mon)) {
1711 ret = qemu_savevm_state_begin(mon, f, 0, 0);
1716 ret = qemu_savevm_state_iterate(mon, f);
1721 ret = qemu_savevm_state_complete(mon, f);
1725 ret = qemu_file_get_error(f);
1731 static SaveStateEntry *find_se(const char *idstr, int instance_id)
1735 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
1736 if (!strcmp(se->idstr, idstr) &&
1737 (instance_id == se->instance_id ||
1738 instance_id == se->alias_id))
1740 /* Migrating from an older version? */
1741 if (strstr(se->idstr, idstr) && se->compat) {
1742 if (!strcmp(se->compat->idstr, idstr) &&
1743 (instance_id == se->compat->instance_id ||
1744 instance_id == se->alias_id))
1751 static const VMStateDescription *vmstate_get_subsection(const VMStateSubsection *sub, char *idstr)
1753 while(sub && sub->needed) {
1754 if (strcmp(idstr, sub->vmsd->name) == 0) {
1762 static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd,
1765 while (qemu_peek_byte(f, 0) == QEMU_VM_SUBSECTION) {
1768 uint8_t version_id, len, size;
1769 const VMStateDescription *sub_vmsd;
1771 len = qemu_peek_byte(f, 1);
1772 if (len < strlen(vmsd->name) + 1) {
1773 /* subsection name has be be "section_name/a" */
1776 size = qemu_peek_buffer(f, (uint8_t *)idstr, len, 2);
1782 if (strncmp(vmsd->name, idstr, strlen(vmsd->name)) != 0) {
1783 /* it don't have a valid subsection name */
1786 sub_vmsd = vmstate_get_subsection(vmsd->subsections, idstr);
1787 if (sub_vmsd == NULL) {
1790 qemu_file_skip(f, 1); /* subsection */
1791 qemu_file_skip(f, 1); /* len */
1792 qemu_file_skip(f, len); /* idstr */
1793 version_id = qemu_get_be32(f);
1795 ret = vmstate_load_state(f, sub_vmsd, opaque, version_id);
1803 static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd,
1806 const VMStateSubsection *sub = vmsd->subsections;
1808 while (sub && sub->needed) {
1809 if (sub->needed(opaque)) {
1810 const VMStateDescription *vmsd = sub->vmsd;
1813 qemu_put_byte(f, QEMU_VM_SUBSECTION);
1814 len = strlen(vmsd->name);
1815 qemu_put_byte(f, len);
1816 qemu_put_buffer(f, (uint8_t *)vmsd->name, len);
1817 qemu_put_be32(f, vmsd->version_id);
1818 vmstate_save_state(f, vmsd, opaque);
1824 typedef struct LoadStateEntry {
1825 QLIST_ENTRY(LoadStateEntry) entry;
1831 int qemu_loadvm_state(QEMUFile *f)
1833 QLIST_HEAD(, LoadStateEntry) loadvm_handlers =
1834 QLIST_HEAD_INITIALIZER(loadvm_handlers);
1835 LoadStateEntry *le, *new_le;
1836 uint8_t section_type;
1840 if (qemu_savevm_state_blocked(default_mon)) {
1844 v = qemu_get_be32(f);
1845 if (v != QEMU_VM_FILE_MAGIC)
1848 v = qemu_get_be32(f);
1849 if (v == QEMU_VM_FILE_VERSION_COMPAT) {
1850 fprintf(stderr, "SaveVM v2 format is obsolete and don't work anymore\n");
1853 if (v != QEMU_VM_FILE_VERSION)
1856 while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) {
1857 uint32_t instance_id, version_id, section_id;
1862 switch (section_type) {
1863 case QEMU_VM_SECTION_START:
1864 case QEMU_VM_SECTION_FULL:
1865 /* Read section start */
1866 section_id = qemu_get_be32(f);
1867 len = qemu_get_byte(f);
1868 qemu_get_buffer(f, (uint8_t *)idstr, len);
1870 instance_id = qemu_get_be32(f);
1871 version_id = qemu_get_be32(f);
1873 /* Find savevm section */
1874 se = find_se(idstr, instance_id);
1876 fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id);
1881 /* Validate version */
1882 if (version_id > se->version_id) {
1883 fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n",
1884 version_id, idstr, se->version_id);
1890 le = g_malloc0(sizeof(*le));
1893 le->section_id = section_id;
1894 le->version_id = version_id;
1895 QLIST_INSERT_HEAD(&loadvm_handlers, le, entry);
1897 ret = vmstate_load(f, le->se, le->version_id);
1899 fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n",
1900 instance_id, idstr);
1904 case QEMU_VM_SECTION_PART:
1905 case QEMU_VM_SECTION_END:
1906 section_id = qemu_get_be32(f);
1908 QLIST_FOREACH(le, &loadvm_handlers, entry) {
1909 if (le->section_id == section_id) {
1914 fprintf(stderr, "Unknown savevm section %d\n", section_id);
1919 ret = vmstate_load(f, le->se, le->version_id);
1921 fprintf(stderr, "qemu: warning: error while loading state section id %d\n",
1927 fprintf(stderr, "Unknown savevm section type %d\n", section_type);
1933 cpu_synchronize_all_post_init();
1938 QLIST_FOREACH_SAFE(le, &loadvm_handlers, entry, new_le) {
1939 QLIST_REMOVE(le, entry);
1944 ret = qemu_file_get_error(f);
1950 static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info,
1953 QEMUSnapshotInfo *sn_tab, *sn;
1957 nb_sns = bdrv_snapshot_list(bs, &sn_tab);
1960 for(i = 0; i < nb_sns; i++) {
1962 if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) {
1973 * Deletes snapshots of a given name in all opened images.
1975 static int del_existing_snapshots(Monitor *mon, const char *name)
1977 BlockDriverState *bs;
1978 QEMUSnapshotInfo sn1, *snapshot = &sn1;
1982 while ((bs = bdrv_next(bs))) {
1983 if (bdrv_can_snapshot(bs) &&
1984 bdrv_snapshot_find(bs, snapshot, name) >= 0)
1986 ret = bdrv_snapshot_delete(bs, name);
1989 "Error while deleting snapshot on '%s'\n",
1990 bdrv_get_device_name(bs));
1999 void do_savevm(Monitor *mon, const QDict *qdict)
2001 BlockDriverState *bs, *bs1;
2002 QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1;
2005 int saved_vm_running;
2006 uint64_t vm_state_size;
2014 const char *name = qdict_get_try_str(qdict, "name");
2016 /* Verify if there is a device that doesn't support snapshots and is writable */
2018 while ((bs = bdrv_next(bs))) {
2020 if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) {
2024 if (!bdrv_can_snapshot(bs)) {
2025 monitor_printf(mon, "Device '%s' is writable but does not support snapshots.\n",
2026 bdrv_get_device_name(bs));
2031 bs = bdrv_snapshots();
2033 monitor_printf(mon, "No block device can accept snapshots\n");
2037 saved_vm_running = runstate_is_running();
2038 vm_stop(RUN_STATE_SAVE_VM);
2040 memset(sn, 0, sizeof(*sn));
2042 /* fill auxiliary fields */
2045 sn->date_sec = tb.time;
2046 sn->date_nsec = tb.millitm * 1000000;
2048 gettimeofday(&tv, NULL);
2049 sn->date_sec = tv.tv_sec;
2050 sn->date_nsec = tv.tv_usec * 1000;
2052 sn->vm_clock_nsec = qemu_get_clock_ns(vm_clock);
2055 ret = bdrv_snapshot_find(bs, old_sn, name);
2057 pstrcpy(sn->name, sizeof(sn->name), old_sn->name);
2058 pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str);
2060 pstrcpy(sn->name, sizeof(sn->name), name);
2064 ptm = localtime(&tb.time);
2065 strftime(sn->name, sizeof(sn->name), "vm-%Y%m%d%H%M%S", ptm);
2067 /* cast below needed for OpenBSD where tv_sec is still 'long' */
2068 localtime_r((const time_t *)&tv.tv_sec, &tm);
2069 strftime(sn->name, sizeof(sn->name), "vm-%Y%m%d%H%M%S", &tm);
2073 /* Delete old snapshots of the same name */
2074 if (name && del_existing_snapshots(mon, name) < 0) {
2078 /* save the VM state */
2079 f = qemu_fopen_bdrv(bs, 1);
2081 monitor_printf(mon, "Could not open VM state file\n");
2084 ret = qemu_savevm_state(mon, f);
2085 vm_state_size = qemu_ftell(f);
2088 monitor_printf(mon, "Error %d while writing VM\n", ret);
2092 /* create the snapshots */
2095 while ((bs1 = bdrv_next(bs1))) {
2096 if (bdrv_can_snapshot(bs1)) {
2097 /* Write VM state size only to the image that contains the state */
2098 sn->vm_state_size = (bs == bs1 ? vm_state_size : 0);
2099 ret = bdrv_snapshot_create(bs1, sn);
2101 monitor_printf(mon, "Error while creating snapshot on '%s'\n",
2102 bdrv_get_device_name(bs1));
2108 if (saved_vm_running)
2112 int load_vmstate(const char *name)
2114 BlockDriverState *bs, *bs_vm_state;
2115 QEMUSnapshotInfo sn;
2119 bs_vm_state = bdrv_snapshots();
2121 error_report("No block device supports snapshots");
2125 /* Don't even try to load empty VM states */
2126 ret = bdrv_snapshot_find(bs_vm_state, &sn, name);
2129 } else if (sn.vm_state_size == 0) {
2130 error_report("This is a disk-only snapshot. Revert to it offline "
2135 /* Verify if there is any device that doesn't support snapshots and is
2136 writable and check if the requested snapshot is available too. */
2138 while ((bs = bdrv_next(bs))) {
2140 if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) {
2144 if (!bdrv_can_snapshot(bs)) {
2145 error_report("Device '%s' is writable but does not support snapshots.",
2146 bdrv_get_device_name(bs));
2150 ret = bdrv_snapshot_find(bs, &sn, name);
2152 error_report("Device '%s' does not have the requested snapshot '%s'",
2153 bdrv_get_device_name(bs), name);
2158 /* Flush all IO requests so they don't interfere with the new state. */
2162 while ((bs = bdrv_next(bs))) {
2163 if (bdrv_can_snapshot(bs)) {
2164 ret = bdrv_snapshot_goto(bs, name);
2166 error_report("Error %d while activating snapshot '%s' on '%s'",
2167 ret, name, bdrv_get_device_name(bs));
2173 /* restore the VM state */
2174 f = qemu_fopen_bdrv(bs_vm_state, 0);
2176 error_report("Could not open VM state file");
2180 qemu_system_reset(VMRESET_SILENT);
2181 ret = qemu_loadvm_state(f);
2185 error_report("Error %d while loading VM state", ret);
2192 void do_delvm(Monitor *mon, const QDict *qdict)
2194 BlockDriverState *bs, *bs1;
2196 const char *name = qdict_get_str(qdict, "name");
2198 bs = bdrv_snapshots();
2200 monitor_printf(mon, "No block device supports snapshots\n");
2205 while ((bs1 = bdrv_next(bs1))) {
2206 if (bdrv_can_snapshot(bs1)) {
2207 ret = bdrv_snapshot_delete(bs1, name);
2209 if (ret == -ENOTSUP)
2211 "Snapshots not supported on device '%s'\n",
2212 bdrv_get_device_name(bs1));
2214 monitor_printf(mon, "Error %d while deleting snapshot on "
2215 "'%s'\n", ret, bdrv_get_device_name(bs1));
2221 void do_info_snapshots(Monitor *mon)
2223 BlockDriverState *bs, *bs1;
2224 QEMUSnapshotInfo *sn_tab, *sn, s, *sn_info = &s;
2225 int nb_sns, i, ret, available;
2227 int *available_snapshots;
2230 bs = bdrv_snapshots();
2232 monitor_printf(mon, "No available block device supports snapshots\n");
2236 nb_sns = bdrv_snapshot_list(bs, &sn_tab);
2238 monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns);
2243 monitor_printf(mon, "There is no snapshot available.\n");
2247 available_snapshots = g_malloc0(sizeof(int) * nb_sns);
2249 for (i = 0; i < nb_sns; i++) {
2254 while ((bs1 = bdrv_next(bs1))) {
2255 if (bdrv_can_snapshot(bs1) && bs1 != bs) {
2256 ret = bdrv_snapshot_find(bs1, sn_info, sn->id_str);
2265 available_snapshots[total] = i;
2271 monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL));
2272 for (i = 0; i < total; i++) {
2273 sn = &sn_tab[available_snapshots[i]];
2274 monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn));
2277 monitor_printf(mon, "There is no suitable snapshot available\n");
2281 g_free(available_snapshots);
2285 void vmstate_register_ram(MemoryRegion *mr, DeviceState *dev)
2287 qemu_ram_set_idstr(memory_region_get_ram_addr(mr) & TARGET_PAGE_MASK,
2288 memory_region_name(mr), dev);
2291 void vmstate_unregister_ram(MemoryRegion *mr, DeviceState *dev)
2293 /* Nothing do to while the implementation is in RAMBlock */
2296 void vmstate_register_ram_global(MemoryRegion *mr)
2298 vmstate_register_ram(mr, NULL);