#include <sys/time.h>
#include <zlib.h>
-/* Needed early for HOST_BSD etc. */
+/* Needed early for CONFIG_BSD etc. */
#include "config-host.h"
#ifndef _WIN32
#include <dirent.h>
#include <netdb.h>
#include <sys/select.h>
-#ifdef HOST_BSD
+#ifdef CONFIG_BSD
#include <sys/stat.h>
#if defined(__FreeBSD__) || defined(__DragonFly__)
#include <libutil.h>
#include "audio/audio.h"
#include "migration.h"
#include "qemu_socket.h"
+#include "qemu-queue.h"
/* point to the block driver where the snapshots are managed */
static BlockDriverState *bs_snapshots;
int has_error;
};
-typedef struct QEMUFilePopen
+typedef struct QEMUFileStdio
{
- FILE *popen_file;
+ FILE *stdio_file;
QEMUFile *file;
-} QEMUFilePopen;
+} QEMUFileStdio;
typedef struct QEMUFileSocket
{
ssize_t len;
do {
- len = recv(s->fd, buf, size, 0);
+ len = recv(s->fd, (void *)buf, size, 0);
} while (len == -1 && socket_error() == EINTR);
if (len == -1)
return 0;
}
-static int popen_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size)
+static int stdio_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size)
+{
+ QEMUFileStdio *s = opaque;
+ return fwrite(buf, 1, size, s->stdio_file);
+}
+
+static int stdio_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
{
- QEMUFilePopen *s = opaque;
- return fwrite(buf, 1, size, s->popen_file);
+ QEMUFileStdio *s = opaque;
+ FILE *fp = s->stdio_file;
+ int bytes;
+
+ do {
+ clearerr(fp);
+ bytes = fread(buf, 1, size, fp);
+ } while ((bytes == 0) && ferror(fp) && (errno == EINTR));
+ return bytes;
}
-static int popen_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
+static int stdio_pclose(void *opaque)
{
- QEMUFilePopen *s = opaque;
- return fread(buf, 1, size, s->popen_file);
+ QEMUFileStdio *s = opaque;
+ pclose(s->stdio_file);
+ qemu_free(s);
+ return 0;
}
-static int popen_close(void *opaque)
+static int stdio_fclose(void *opaque)
{
- QEMUFilePopen *s = opaque;
- pclose(s->popen_file);
+ QEMUFileStdio *s = opaque;
+ fclose(s->stdio_file);
qemu_free(s);
return 0;
}
-QEMUFile *qemu_popen(FILE *popen_file, const char *mode)
+QEMUFile *qemu_popen(FILE *stdio_file, const char *mode)
{
- QEMUFilePopen *s;
+ QEMUFileStdio *s;
- if (popen_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) {
+ if (stdio_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) {
fprintf(stderr, "qemu_popen: Argument validity check failed\n");
return NULL;
}
- s = qemu_mallocz(sizeof(QEMUFilePopen));
+ s = qemu_mallocz(sizeof(QEMUFileStdio));
- s->popen_file = popen_file;
+ s->stdio_file = stdio_file;
if(mode[0] == 'r') {
- s->file = qemu_fopen_ops(s, NULL, popen_get_buffer, popen_close, NULL, NULL);
+ s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_pclose, NULL, NULL);
} else {
- s->file = qemu_fopen_ops(s, popen_put_buffer, NULL, popen_close, NULL, NULL);
+ s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_pclose, NULL, NULL);
}
return s->file;
}
return qemu_popen(popen_file, mode);
}
-int qemu_popen_fd(QEMUFile *f)
+int qemu_stdio_fd(QEMUFile *f)
{
- QEMUFilePopen *p;
+ QEMUFileStdio *p;
int fd;
- p = (QEMUFilePopen *)f->opaque;
- fd = fileno(p->popen_file);
+ p = (QEMUFileStdio *)f->opaque;
+ fd = fileno(p->stdio_file);
return fd;
}
+QEMUFile *qemu_fdopen(int fd, const char *mode)
+{
+ QEMUFileStdio *s;
+
+ if (mode == NULL ||
+ (mode[0] != 'r' && mode[0] != 'w') ||
+ mode[1] != 'b' || mode[2] != 0) {
+ fprintf(stderr, "qemu_fdopen: Argument validity check failed\n");
+ return NULL;
+ }
+
+ s = qemu_mallocz(sizeof(QEMUFileStdio));
+ s->stdio_file = fdopen(fd, mode);
+ if (!s->stdio_file)
+ goto fail;
+
+ if(mode[0] == 'r') {
+ s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_fclose, NULL, NULL);
+ } else {
+ s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_fclose, NULL, NULL);
+ }
+ return s->file;
+
+fail:
+ qemu_free(s);
+ return NULL;
+}
+
QEMUFile *qemu_fopen_socket(int fd)
{
QEMUFileSocket *s = qemu_mallocz(sizeof(QEMUFileSocket));
return s->file;
}
-typedef struct QEMUFileStdio
-{
- FILE *outfile;
-} QEMUFileStdio;
-
static int file_put_buffer(void *opaque, const uint8_t *buf,
int64_t pos, int size)
{
QEMUFileStdio *s = opaque;
- fseek(s->outfile, pos, SEEK_SET);
- fwrite(buf, 1, size, s->outfile);
+ fseek(s->stdio_file, pos, SEEK_SET);
+ fwrite(buf, 1, size, s->stdio_file);
return size;
}
static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
{
QEMUFileStdio *s = opaque;
- fseek(s->outfile, pos, SEEK_SET);
- return fread(buf, 1, size, s->outfile);
-}
-
-static int file_close(void *opaque)
-{
- QEMUFileStdio *s = opaque;
- fclose(s->outfile);
- qemu_free(s);
- return 0;
+ fseek(s->stdio_file, pos, SEEK_SET);
+ return fread(buf, 1, size, s->stdio_file);
}
QEMUFile *qemu_fopen(const char *filename, const char *mode)
{
QEMUFileStdio *s;
+ if (mode == NULL ||
+ (mode[0] != 'r' && mode[0] != 'w') ||
+ mode[1] != 'b' || mode[2] != 0) {
+ fprintf(stderr, "qemu_fdopen: Argument validity check failed\n");
+ return NULL;
+ }
+
s = qemu_mallocz(sizeof(QEMUFileStdio));
- s->outfile = fopen(filename, mode);
- if (!s->outfile)
+ s->stdio_file = fopen(filename, mode);
+ if (!s->stdio_file)
goto fail;
- if (!strcmp(mode, "wb"))
- return qemu_fopen_ops(s, file_put_buffer, NULL, file_close, NULL, NULL);
- else if (!strcmp(mode, "rb"))
- return qemu_fopen_ops(s, NULL, file_get_buffer, file_close, NULL, NULL);
-
+ if(mode[0] == 'w') {
+ s->file = qemu_fopen_ops(s, file_put_buffer, NULL, stdio_fclose, NULL, NULL);
+ } else {
+ s->file = qemu_fopen_ops(s, NULL, file_get_buffer, stdio_fclose, NULL, NULL);
+ }
+ return s->file;
fail:
- if (s->outfile)
- fclose(s->outfile);
qemu_free(s);
return NULL;
}
-typedef struct QEMUFileBdrv
-{
- BlockDriverState *bs;
- int64_t base_offset;
-} QEMUFileBdrv;
-
static int block_put_buffer(void *opaque, const uint8_t *buf,
int64_t pos, int size)
{
- QEMUFileBdrv *s = opaque;
- bdrv_put_buffer(s->bs, buf, s->base_offset + pos, size);
+ bdrv_save_vmstate(opaque, buf, pos, size);
return size;
}
static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
{
- QEMUFileBdrv *s = opaque;
- return bdrv_get_buffer(s->bs, buf, s->base_offset + pos, size);
+ return bdrv_load_vmstate(opaque, buf, pos, size);
}
static int bdrv_fclose(void *opaque)
{
- QEMUFileBdrv *s = opaque;
- qemu_free(s);
return 0;
}
-static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int64_t offset, int is_writable)
+static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable)
{
- QEMUFileBdrv *s;
-
- s = qemu_mallocz(sizeof(QEMUFileBdrv));
-
- s->bs = bs;
- s->base_offset = offset;
-
if (is_writable)
- return qemu_fopen_ops(s, block_put_buffer, NULL, bdrv_fclose, NULL, NULL);
-
- return qemu_fopen_ops(s, NULL, block_get_buffer, bdrv_fclose, NULL, NULL);
+ return qemu_fopen_ops(bs, block_put_buffer, NULL, bdrv_fclose, NULL, NULL);
+ return qemu_fopen_ops(bs, NULL, block_get_buffer, bdrv_fclose, NULL, NULL);
}
QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer,
size_t qemu_file_set_rate_limit(QEMUFile *f, size_t new_rate)
{
- if (f->set_rate_limit)
+ /* any failed or completed migration keeps its state to allow probing of
+ * migration data, but has no associated file anymore */
+ if (f && f->set_rate_limit)
return f->set_rate_limit(f->opaque, new_rate);
return 0;
return v;
}
+/* 8 bit int */
+
+static int get_int8(QEMUFile *f, void *pv, size_t size)
+{
+ int8_t *v = pv;
+ qemu_get_s8s(f, v);
+ return 0;
+}
+
+static void put_int8(QEMUFile *f, const void *pv, size_t size)
+{
+ const int8_t *v = pv;
+ qemu_put_s8s(f, v);
+}
+
+const VMStateInfo vmstate_info_int8 = {
+ .name = "int8",
+ .get = get_int8,
+ .put = put_int8,
+};
+
+/* 16 bit int */
+
+static int get_int16(QEMUFile *f, void *pv, size_t size)
+{
+ int16_t *v = pv;
+ qemu_get_sbe16s(f, v);
+ return 0;
+}
+
+static void put_int16(QEMUFile *f, const void *pv, size_t size)
+{
+ const int16_t *v = pv;
+ qemu_put_sbe16s(f, v);
+}
+
+const VMStateInfo vmstate_info_int16 = {
+ .name = "int16",
+ .get = get_int16,
+ .put = put_int16,
+};
+
+/* 32 bit int */
+
+static int get_int32(QEMUFile *f, void *pv, size_t size)
+{
+ int32_t *v = pv;
+ qemu_get_sbe32s(f, v);
+ return 0;
+}
+
+static void put_int32(QEMUFile *f, const void *pv, size_t size)
+{
+ const int32_t *v = pv;
+ qemu_put_sbe32s(f, v);
+}
+
+const VMStateInfo vmstate_info_int32 = {
+ .name = "int32",
+ .get = get_int32,
+ .put = put_int32,
+};
+
+/* 32 bit int. See that the received value is the same than the one
+ in the field */
+
+static int get_int32_equal(QEMUFile *f, void *pv, size_t size)
+{
+ int32_t *v = pv;
+ int32_t v2;
+ qemu_get_sbe32s(f, &v2);
+
+ if (*v == v2)
+ return 0;
+ return -EINVAL;
+}
+
+const VMStateInfo vmstate_info_int32_equal = {
+ .name = "int32 equal",
+ .get = get_int32_equal,
+ .put = put_int32,
+};
+
+/* 32 bit int. See that the received value is the less or the same
+ than the one in the field */
+
+static int get_int32_le(QEMUFile *f, void *pv, size_t size)
+{
+ int32_t *old = pv;
+ int32_t new;
+ qemu_get_sbe32s(f, &new);
+
+ if (*old <= new)
+ return 0;
+ return -EINVAL;
+}
+
+const VMStateInfo vmstate_info_int32_le = {
+ .name = "int32 equal",
+ .get = get_int32_le,
+ .put = put_int32,
+};
+
+/* 64 bit int */
+
+static int get_int64(QEMUFile *f, void *pv, size_t size)
+{
+ int64_t *v = pv;
+ qemu_get_sbe64s(f, v);
+ return 0;
+}
+
+static void put_int64(QEMUFile *f, const void *pv, size_t size)
+{
+ const int64_t *v = pv;
+ qemu_put_sbe64s(f, v);
+}
+
+const VMStateInfo vmstate_info_int64 = {
+ .name = "int64",
+ .get = get_int64,
+ .put = put_int64,
+};
+
+/* 8 bit unsigned int */
+
+static int get_uint8(QEMUFile *f, void *pv, size_t size)
+{
+ uint8_t *v = pv;
+ qemu_get_8s(f, v);
+ return 0;
+}
+
+static void put_uint8(QEMUFile *f, const void *pv, size_t size)
+{
+ const uint8_t *v = pv;
+ qemu_put_8s(f, v);
+}
+
+const VMStateInfo vmstate_info_uint8 = {
+ .name = "uint8",
+ .get = get_uint8,
+ .put = put_uint8,
+};
+
+/* 16 bit unsigned int */
+
+static int get_uint16(QEMUFile *f, void *pv, size_t size)
+{
+ uint16_t *v = pv;
+ qemu_get_be16s(f, v);
+ return 0;
+}
+
+static void put_uint16(QEMUFile *f, const void *pv, size_t size)
+{
+ const uint16_t *v = pv;
+ qemu_put_be16s(f, v);
+}
+
+const VMStateInfo vmstate_info_uint16 = {
+ .name = "uint16",
+ .get = get_uint16,
+ .put = put_uint16,
+};
+
+/* 32 bit unsigned int */
+
+static int get_uint32(QEMUFile *f, void *pv, size_t size)
+{
+ uint32_t *v = pv;
+ qemu_get_be32s(f, v);
+ return 0;
+}
+
+static void put_uint32(QEMUFile *f, const void *pv, size_t size)
+{
+ const uint32_t *v = pv;
+ qemu_put_be32s(f, v);
+}
+
+const VMStateInfo vmstate_info_uint32 = {
+ .name = "uint32",
+ .get = get_uint32,
+ .put = put_uint32,
+};
+
+/* 64 bit unsigned int */
+
+static int get_uint64(QEMUFile *f, void *pv, size_t size)
+{
+ uint64_t *v = pv;
+ qemu_get_be64s(f, v);
+ return 0;
+}
+
+static void put_uint64(QEMUFile *f, const void *pv, size_t size)
+{
+ const uint64_t *v = pv;
+ qemu_put_be64s(f, v);
+}
+
+const VMStateInfo vmstate_info_uint64 = {
+ .name = "uint64",
+ .get = get_uint64,
+ .put = put_uint64,
+};
+
+/* 8 bit int. See that the received value is the same than the one
+ in the field */
+
+static int get_uint8_equal(QEMUFile *f, void *pv, size_t size)
+{
+ uint8_t *v = pv;
+ uint8_t v2;
+ qemu_get_8s(f, &v2);
+
+ if (*v == v2)
+ return 0;
+ return -EINVAL;
+}
+
+const VMStateInfo vmstate_info_uint8_equal = {
+ .name = "int32 equal",
+ .get = get_uint8_equal,
+ .put = put_uint8,
+};
+
+/* timers */
+
+static int get_timer(QEMUFile *f, void *pv, size_t size)
+{
+ QEMUTimer *v = pv;
+ qemu_get_timer(f, v);
+ return 0;
+}
+
+static void put_timer(QEMUFile *f, const void *pv, size_t size)
+{
+ QEMUTimer *v = (void *)pv;
+ qemu_put_timer(f, v);
+}
+
+const VMStateInfo vmstate_info_timer = {
+ .name = "timer",
+ .get = get_timer,
+ .put = put_timer,
+};
+
+/* uint8_t buffers */
+
+static int get_buffer(QEMUFile *f, void *pv, size_t size)
+{
+ uint8_t *v = pv;
+ qemu_get_buffer(f, v, size);
+ return 0;
+}
+
+static void put_buffer(QEMUFile *f, const void *pv, size_t size)
+{
+ uint8_t *v = (void *)pv;
+ qemu_put_buffer(f, v, size);
+}
+
+const VMStateInfo vmstate_info_buffer = {
+ .name = "buffer",
+ .get = get_buffer,
+ .put = put_buffer,
+};
+
typedef struct SaveStateEntry {
+ QTAILQ_ENTRY(SaveStateEntry) entry;
char idstr[256];
int instance_id;
int version_id;
SaveLiveStateHandler *save_live_state;
SaveStateHandler *save_state;
LoadStateHandler *load_state;
+ const VMStateDescription *vmsd;
void *opaque;
- struct SaveStateEntry *next;
} SaveStateEntry;
-static SaveStateEntry *first_se;
+static QTAILQ_HEAD(savevm_handlers, SaveStateEntry) savevm_handlers =
+ QTAILQ_HEAD_INITIALIZER(savevm_handlers);
+static int global_section_id;
+
+static int calculate_new_instance_id(const char *idstr)
+{
+ SaveStateEntry *se;
+ int instance_id = 0;
+
+ QTAILQ_FOREACH(se, &savevm_handlers, entry) {
+ if (strcmp(idstr, se->idstr) == 0
+ && instance_id <= se->instance_id) {
+ instance_id = se->instance_id + 1;
+ }
+ }
+ return instance_id;
+}
/* TODO: Individual devices generally have very little idea about the rest
of the system, so instance_id should be removed/replaced.
LoadStateHandler *load_state,
void *opaque)
{
- SaveStateEntry *se, **pse;
- static int global_section_id;
+ SaveStateEntry *se;
se = qemu_malloc(sizeof(SaveStateEntry));
pstrcpy(se->idstr, sizeof(se->idstr), idstr);
- se->instance_id = (instance_id == -1) ? 0 : instance_id;
se->version_id = version_id;
se->section_id = global_section_id++;
se->save_live_state = save_live_state;
se->save_state = save_state;
se->load_state = load_state;
se->opaque = opaque;
- se->next = NULL;
+ se->vmsd = NULL;
- /* add at the end of list */
- pse = &first_se;
- while (*pse != NULL) {
- if (instance_id == -1
- && strcmp(se->idstr, (*pse)->idstr) == 0
- && se->instance_id <= (*pse)->instance_id)
- se->instance_id = (*pse)->instance_id + 1;
- pse = &(*pse)->next;
+ if (instance_id == -1) {
+ se->instance_id = calculate_new_instance_id(idstr);
+ } else {
+ se->instance_id = instance_id;
}
- *pse = se;
+ /* add at the end of list */
+ QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry);
return 0;
}
void unregister_savevm(const char *idstr, void *opaque)
{
- SaveStateEntry **pse;
+ SaveStateEntry *se, *new_se;
- pse = &first_se;
- while (*pse != NULL) {
- if (strcmp((*pse)->idstr, idstr) == 0 && (*pse)->opaque == opaque) {
- SaveStateEntry *next = (*pse)->next;
- qemu_free(*pse);
- *pse = next;
- continue;
+ QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) {
+ if (strcmp(se->idstr, idstr) == 0 && se->opaque == opaque) {
+ QTAILQ_REMOVE(&savevm_handlers, se, entry);
+ qemu_free(se);
+ }
+ }
+}
+
+int vmstate_register(int instance_id, const VMStateDescription *vmsd,
+ void *opaque)
+{
+ SaveStateEntry *se;
+
+ se = qemu_malloc(sizeof(SaveStateEntry));
+ pstrcpy(se->idstr, sizeof(se->idstr), vmsd->name);
+ se->version_id = vmsd->version_id;
+ se->section_id = global_section_id++;
+ se->save_live_state = NULL;
+ se->save_state = NULL;
+ se->load_state = NULL;
+ se->opaque = opaque;
+ se->vmsd = vmsd;
+
+ if (instance_id == -1) {
+ se->instance_id = calculate_new_instance_id(vmsd->name);
+ } else {
+ se->instance_id = instance_id;
+ }
+ /* add at the end of list */
+ QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry);
+ return 0;
+}
+
+void vmstate_unregister(const VMStateDescription *vmsd, void *opaque)
+{
+ SaveStateEntry *se, *new_se;
+
+ QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) {
+ if (se->vmsd == vmsd && se->opaque == opaque) {
+ QTAILQ_REMOVE(&savevm_handlers, se, entry);
+ qemu_free(se);
}
- pse = &(*pse)->next;
}
}
+int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
+ void *opaque, int version_id)
+{
+ VMStateField *field = vmsd->fields;
+
+ if (version_id > vmsd->version_id) {
+ return -EINVAL;
+ }
+ if (version_id < vmsd->minimum_version_id_old) {
+ return -EINVAL;
+ }
+ if (version_id < vmsd->minimum_version_id) {
+ return vmsd->load_state_old(f, opaque, version_id);
+ }
+ if (vmsd->pre_load) {
+ int ret = vmsd->pre_load(opaque);
+ if (ret)
+ return ret;
+ }
+ while(field->name) {
+ if (field->version_id <= version_id) {
+ void *base_addr = opaque + field->offset;
+ int ret, i, n_elems = 1;
+
+ if (field->flags & VMS_ARRAY) {
+ n_elems = field->num;
+ } else if (field->flags & VMS_VARRAY) {
+ n_elems = *(size_t *)(opaque+field->num_offset);
+ }
+ if (field->flags & VMS_POINTER) {
+ base_addr = *(void **)base_addr;
+ }
+ for (i = 0; i < n_elems; i++) {
+ void *addr = base_addr + field->size * i;
+
+ if (field->flags & VMS_STRUCT) {
+ ret = vmstate_load_state(f, field->vmsd, addr, field->vmsd->version_id);
+ } else {
+ ret = field->info->get(f, addr, field->size);
+
+ }
+ if (ret < 0) {
+ return ret;
+ }
+ }
+ }
+ field++;
+ }
+ if (vmsd->post_load) {
+ return vmsd->post_load(opaque);
+ }
+ return 0;
+}
+
+void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd,
+ const void *opaque)
+{
+ VMStateField *field = vmsd->fields;
+
+ if (vmsd->pre_save) {
+ vmsd->pre_save(opaque);
+ }
+ while(field->name) {
+ const void *base_addr = opaque + field->offset;
+ int i, n_elems = 1;
+
+ if (field->flags & VMS_ARRAY) {
+ n_elems = field->num;
+ } else if (field->flags & VMS_VARRAY) {
+ n_elems = *(size_t *)(opaque+field->num_offset);
+ }
+ if (field->flags & VMS_POINTER) {
+ base_addr = *(void **)base_addr;
+ }
+ for (i = 0; i < n_elems; i++) {
+ const void *addr = base_addr + field->size * i;
+
+ if (field->flags & VMS_STRUCT) {
+ vmstate_save_state(f, field->vmsd, addr);
+ } else {
+ field->info->put(f, addr, field->size);
+ }
+ }
+ field++;
+ }
+ if (vmsd->post_save) {
+ vmsd->post_save(opaque);
+ }
+}
+
+static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id)
+{
+ if (!se->vmsd) { /* Old style */
+ return se->load_state(f, se->opaque, version_id);
+ }
+ return vmstate_load_state(f, se->vmsd, se->opaque, version_id);
+}
+
+static void vmstate_save(QEMUFile *f, SaveStateEntry *se)
+{
+ if (!se->vmsd) { /* Old style */
+ se->save_state(f, se->opaque);
+ return;
+ }
+ vmstate_save_state(f,se->vmsd, se->opaque);
+}
+
#define QEMU_VM_FILE_MAGIC 0x5145564d
#define QEMU_VM_FILE_VERSION_COMPAT 0x00000002
#define QEMU_VM_FILE_VERSION 0x00000003
qemu_put_be32(f, QEMU_VM_FILE_MAGIC);
qemu_put_be32(f, QEMU_VM_FILE_VERSION);
- for (se = first_se; se != NULL; se = se->next) {
+ QTAILQ_FOREACH(se, &savevm_handlers, entry) {
int len;
if (se->save_live_state == NULL)
SaveStateEntry *se;
int ret = 1;
- for (se = first_se; se != NULL; se = se->next) {
+ QTAILQ_FOREACH(se, &savevm_handlers, entry) {
if (se->save_live_state == NULL)
continue;
{
SaveStateEntry *se;
- for (se = first_se; se != NULL; se = se->next) {
+ QTAILQ_FOREACH(se, &savevm_handlers, entry) {
if (se->save_live_state == NULL)
continue;
se->save_live_state(f, QEMU_VM_SECTION_END, se->opaque);
}
- for(se = first_se; se != NULL; se = se->next) {
+ QTAILQ_FOREACH(se, &savevm_handlers, entry) {
int len;
- if (se->save_state == NULL)
+ if (se->save_state == NULL && se->vmsd == NULL)
continue;
/* Section type */
qemu_put_be32(f, se->instance_id);
qemu_put_be32(f, se->version_id);
- se->save_state(f, se->opaque);
+ vmstate_save(f, se);
}
qemu_put_byte(f, QEMU_VM_EOF);
{
SaveStateEntry *se;
- for(se = first_se; se != NULL; se = se->next) {
+ QTAILQ_FOREACH(se, &savevm_handlers, entry) {
if (!strcmp(se->idstr, idstr) &&
instance_id == se->instance_id)
return se;
}
typedef struct LoadStateEntry {
+ QLIST_ENTRY(LoadStateEntry) entry;
SaveStateEntry *se;
int section_id;
int version_id;
- struct LoadStateEntry *next;
} LoadStateEntry;
-static int qemu_loadvm_state_v2(QEMUFile *f)
-{
- SaveStateEntry *se;
- int len, ret, instance_id, record_len, version_id;
- int64_t total_len, end_pos, cur_pos;
- char idstr[256];
-
- total_len = qemu_get_be64(f);
- end_pos = total_len + qemu_ftell(f);
- for(;;) {
- if (qemu_ftell(f) >= end_pos)
- break;
- len = qemu_get_byte(f);
- qemu_get_buffer(f, (uint8_t *)idstr, len);
- idstr[len] = '\0';
- instance_id = qemu_get_be32(f);
- version_id = qemu_get_be32(f);
- record_len = qemu_get_be32(f);
- cur_pos = qemu_ftell(f);
- se = find_se(idstr, instance_id);
- if (!se) {
- fprintf(stderr, "qemu: warning: instance 0x%x of device '%s' not present in current VM\n",
- instance_id, idstr);
- } else {
- ret = se->load_state(f, se->opaque, version_id);
- if (ret < 0) {
- fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n",
- instance_id, idstr);
- return ret;
- }
- }
- /* always seek to exact end of record */
- qemu_fseek(f, cur_pos + record_len, SEEK_SET);
- }
-
- if (qemu_file_has_error(f))
- return -EIO;
-
- return 0;
-}
-
int qemu_loadvm_state(QEMUFile *f)
{
- LoadStateEntry *first_le = NULL;
+ QLIST_HEAD(, LoadStateEntry) loadvm_handlers =
+ QLIST_HEAD_INITIALIZER(loadvm_handlers);
+ LoadStateEntry *le, *new_le;
uint8_t section_type;
unsigned int v;
int ret;
return -EINVAL;
v = qemu_get_be32(f);
- if (v == QEMU_VM_FILE_VERSION_COMPAT)
- return qemu_loadvm_state_v2(f);
+ if (v == QEMU_VM_FILE_VERSION_COMPAT) {
+ fprintf(stderr, "SaveVM v2 format is obsolete and don't work anymore\n");
+ return -ENOTSUP;
+ }
if (v != QEMU_VM_FILE_VERSION)
return -ENOTSUP;
while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) {
uint32_t instance_id, version_id, section_id;
- LoadStateEntry *le;
SaveStateEntry *se;
char idstr[257];
int len;
le->se = se;
le->section_id = section_id;
le->version_id = version_id;
- le->next = first_le;
- first_le = le;
+ QLIST_INSERT_HEAD(&loadvm_handlers, le, entry);
- le->se->load_state(f, le->se->opaque, le->version_id);
+ ret = vmstate_load(f, le->se, le->version_id);
+ if (ret < 0) {
+ fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n",
+ instance_id, idstr);
+ goto out;
+ }
break;
case QEMU_VM_SECTION_PART:
case QEMU_VM_SECTION_END:
section_id = qemu_get_be32(f);
- for (le = first_le; le && le->section_id != section_id; le = le->next);
+ QLIST_FOREACH(le, &loadvm_handlers, entry) {
+ if (le->section_id == section_id) {
+ break;
+ }
+ }
if (le == NULL) {
fprintf(stderr, "Unknown savevm section %d\n", section_id);
ret = -EINVAL;
goto out;
}
- le->se->load_state(f, le->se->opaque, le->version_id);
+ ret = vmstate_load(f, le->se, le->version_id);
+ if (ret < 0) {
+ fprintf(stderr, "qemu: warning: error while loading state section id %d\n",
+ section_id);
+ goto out;
+ }
break;
default:
fprintf(stderr, "Unknown savevm section type %d\n", section_type);
ret = 0;
out:
- while (first_le) {
- LoadStateEntry *le = first_le;
- first_le = first_le->next;
+ QLIST_FOREACH_SAFE(le, &loadvm_handlers, entry, new_le) {
+ QLIST_REMOVE(le, entry);
qemu_free(le);
}
static BlockDriverState *get_bs_snapshots(void)
{
BlockDriverState *bs;
- int i;
+ DriveInfo *dinfo;
if (bs_snapshots)
return bs_snapshots;
- for(i = 0; i <= nb_drives; i++) {
- bs = drives_table[i].bdrv;
+ QTAILQ_FOREACH(dinfo, &drives, next) {
+ bs = dinfo->bdrv;
if (bdrv_can_snapshot(bs))
goto ok;
}
return ret;
}
-void do_savevm(Monitor *mon, const char *name)
+void do_savevm(Monitor *mon, const QDict *qdict)
{
+ DriveInfo *dinfo;
BlockDriverState *bs, *bs1;
QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1;
- int must_delete, ret, i;
- BlockDriverInfo bdi1, *bdi = &bdi1;
+ int must_delete, ret;
QEMUFile *f;
int saved_vm_running;
uint32_t vm_state_size;
#else
struct timeval tv;
#endif
+ const char *name = qdict_get_try_str(qdict, "name");
bs = get_bs_snapshots();
if (!bs) {
#endif
sn->vm_clock_nsec = qemu_get_clock(vm_clock);
- if (bdrv_get_info(bs, bdi) < 0 || bdi->vm_state_offset <= 0) {
- monitor_printf(mon, "Device %s does not support VM state snapshots\n",
- bdrv_get_device_name(bs));
- goto the_end;
- }
-
/* save the VM state */
- f = qemu_fopen_bdrv(bs, bdi->vm_state_offset, 1);
+ f = qemu_fopen_bdrv(bs, 1);
if (!f) {
monitor_printf(mon, "Could not open VM state file\n");
goto the_end;
/* create the snapshots */
- for(i = 0; i < nb_drives; i++) {
- bs1 = drives_table[i].bdrv;
+ QTAILQ_FOREACH(dinfo, &drives, next) {
+ bs1 = dinfo->bdrv;
if (bdrv_has_snapshot(bs1)) {
if (must_delete) {
ret = bdrv_snapshot_delete(bs1, old_sn->id_str);
vm_start();
}
-void do_loadvm(Monitor *mon, const char *name)
+int load_vmstate(Monitor *mon, const char *name)
{
+ DriveInfo *dinfo;
BlockDriverState *bs, *bs1;
- BlockDriverInfo bdi1, *bdi = &bdi1;
QEMUSnapshotInfo sn;
QEMUFile *f;
- int i, ret;
- int saved_vm_running;
+ int ret;
bs = get_bs_snapshots();
if (!bs) {
monitor_printf(mon, "No block device supports snapshots\n");
- return;
+ return -EINVAL;
}
/* Flush all IO requests so they don't interfere with the new state. */
qemu_aio_flush();
- saved_vm_running = vm_running;
- vm_stop(0);
-
- for(i = 0; i <= nb_drives; i++) {
- bs1 = drives_table[i].bdrv;
+ QTAILQ_FOREACH(dinfo, &drives, next) {
+ bs1 = dinfo->bdrv;
if (bdrv_has_snapshot(bs1)) {
ret = bdrv_snapshot_goto(bs1, name);
if (ret < 0) {
}
/* fatal on snapshot block device */
if (bs == bs1)
- goto the_end;
+ return 0;
}
}
}
- if (bdrv_get_info(bs, bdi) < 0 || bdi->vm_state_offset <= 0) {
- monitor_printf(mon, "Device %s does not support VM state snapshots\n",
- bdrv_get_device_name(bs));
- return;
- }
-
/* Don't even try to load empty VM states */
ret = bdrv_snapshot_find(bs, &sn, name);
if ((ret >= 0) && (sn.vm_state_size == 0))
- goto the_end;
+ return -EINVAL;
/* restore the VM state */
- f = qemu_fopen_bdrv(bs, bdi->vm_state_offset, 0);
+ f = qemu_fopen_bdrv(bs, 0);
if (!f) {
monitor_printf(mon, "Could not open VM state file\n");
- goto the_end;
+ return -EINVAL;
}
ret = qemu_loadvm_state(f);
qemu_fclose(f);
if (ret < 0) {
monitor_printf(mon, "Error %d while loading VM state\n", ret);
+ return ret;
}
- the_end:
- if (saved_vm_running)
- vm_start();
+ return 0;
}
-void do_delvm(Monitor *mon, const char *name)
+void do_delvm(Monitor *mon, const QDict *qdict)
{
+ DriveInfo *dinfo;
BlockDriverState *bs, *bs1;
- int i, ret;
+ int ret;
+ const char *name = qdict_get_str(qdict, "name");
bs = get_bs_snapshots();
if (!bs) {
return;
}
- for(i = 0; i <= nb_drives; i++) {
- bs1 = drives_table[i].bdrv;
+ QTAILQ_FOREACH(dinfo, &drives, next) {
+ bs1 = dinfo->bdrv;
if (bdrv_has_snapshot(bs1)) {
ret = bdrv_snapshot_delete(bs1, name);
if (ret < 0) {
void do_info_snapshots(Monitor *mon)
{
+ DriveInfo *dinfo;
BlockDriverState *bs, *bs1;
QEMUSnapshotInfo *sn_tab, *sn;
int nb_sns, i;
return;
}
monitor_printf(mon, "Snapshot devices:");
- for(i = 0; i <= nb_drives; i++) {
- bs1 = drives_table[i].bdrv;
+ QTAILQ_FOREACH(dinfo, &drives, next) {
+ bs1 = dinfo->bdrv;
if (bdrv_has_snapshot(bs1)) {
if (bs == bs1)
monitor_printf(mon, " %s", bdrv_get_device_name(bs1));
projects / qemu.git / blobdiff