#include "config-host.h"
#include "qemu-common.h"
+#include "hw/boards.h"
#include "hw/hw.h"
#include "hw/qdev.h"
#include "net/net.h"
#include "exec/memory.h"
#include "qmp-commands.h"
#include "trace.h"
-#include "qemu/bitops.h"
#include "qemu/iov.h"
#include "block/snapshot.h"
#include "block/qapi.h"
-#define SELF_ANNOUNCE_ROUNDS 5
#ifndef ETH_P_RARP
#define ETH_P_RARP 0x8035
#define ARP_OP_REQUEST_REV 0x3
static int announce_self_create(uint8_t *buf,
- uint8_t *mac_addr)
+ uint8_t *mac_addr)
{
/* Ethernet header. */
memset(buf, 0xff, 6); /* destination MAC addr */
uint8_t buf[60];
int len;
+ trace_qemu_announce_self_iter(qemu_ether_ntoa(&nic->conf->macaddr));
len = announce_self_create(buf, nic->conf->macaddr.a);
qemu_send_packet_raw(qemu_get_queue(nic), buf, len);
if (--count) {
/* delay 50ms, 150ms, 250ms, ... */
timer_mod(timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) +
- 50 + (SELF_ANNOUNCE_ROUNDS - count - 1) * 100);
+ self_announce_delay(count));
} else {
- timer_del(timer);
- timer_free(timer);
+ timer_del(timer);
+ timer_free(timer);
}
}
void qemu_announce_self(void)
{
- static QEMUTimer *timer;
- timer = timer_new_ms(QEMU_CLOCK_REALTIME, qemu_announce_self_once, &timer);
- qemu_announce_self_once(&timer);
+ static QEMUTimer *timer;
+ timer = timer_new_ms(QEMU_CLOCK_REALTIME, qemu_announce_self_once, &timer);
+ qemu_announce_self_once(&timer);
}
/***********************************************************/
/* savevm/loadvm support */
-#define IO_BUF_SIZE 32768
-#define MAX_IOV_SIZE MIN(IOV_MAX, 64)
-
-struct QEMUFile {
- const QEMUFileOps *ops;
- void *opaque;
-
- int64_t bytes_xfer;
- int64_t xfer_limit;
-
- int64_t pos; /* start of buffer when writing, end of buffer
- when reading */
- int buf_index;
- int buf_size; /* 0 when writing */
- uint8_t buf[IO_BUF_SIZE];
-
- struct iovec iov[MAX_IOV_SIZE];
- unsigned int iovcnt;
-
- int last_error;
-};
-
-typedef struct QEMUFileStdio
-{
- FILE *stdio_file;
- QEMUFile *file;
-} QEMUFileStdio;
-
-typedef struct QEMUFileSocket
-{
- int fd;
- QEMUFile *file;
-} QEMUFileSocket;
-
-static ssize_t socket_writev_buffer(void *opaque, struct iovec *iov, int iovcnt,
- int64_t pos)
-{
- QEMUFileSocket *s = opaque;
- ssize_t len;
- ssize_t size = iov_size(iov, iovcnt);
-
- len = iov_send(s->fd, iov, iovcnt, 0, size);
- if (len < size) {
- len = -socket_error();
- }
- return len;
-}
-
-static int socket_get_fd(void *opaque)
-{
- QEMUFileSocket *s = opaque;
-
- return s->fd;
-}
-
-static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
-{
- QEMUFileSocket *s = opaque;
- ssize_t len;
-
- for (;;) {
- len = qemu_recv(s->fd, buf, size, 0);
- if (len != -1) {
- break;
- }
- if (socket_error() == EAGAIN) {
- yield_until_fd_readable(s->fd);
- } else if (socket_error() != EINTR) {
- break;
- }
- }
-
- if (len == -1) {
- len = -socket_error();
- }
- return len;
-}
-
-static int socket_close(void *opaque)
-{
- QEMUFileSocket *s = opaque;
- closesocket(s->fd);
- g_free(s);
- return 0;
-}
-
-static int stdio_get_fd(void *opaque)
-{
- QEMUFileStdio *s = opaque;
-
- return fileno(s->stdio_file);
-}
-
-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)
-{
- QEMUFileStdio *s = opaque;
- FILE *fp = s->stdio_file;
- int bytes;
-
- for (;;) {
- clearerr(fp);
- bytes = fread(buf, 1, size, fp);
- if (bytes != 0 || !ferror(fp)) {
- break;
- }
- if (errno == EAGAIN) {
- yield_until_fd_readable(fileno(fp));
- } else if (errno != EINTR) {
- break;
- }
- }
- return bytes;
-}
-
-static int stdio_pclose(void *opaque)
-{
- QEMUFileStdio *s = opaque;
- int ret;
- ret = pclose(s->stdio_file);
- if (ret == -1) {
- ret = -errno;
- } else if (!WIFEXITED(ret) || WEXITSTATUS(ret) != 0) {
- /* close succeeded, but non-zero exit code: */
- ret = -EIO; /* fake errno value */
- }
- g_free(s);
- return ret;
-}
-
-static int stdio_fclose(void *opaque)
-{
- QEMUFileStdio *s = opaque;
- int ret = 0;
-
- if (s->file->ops->put_buffer || s->file->ops->writev_buffer) {
- int fd = fileno(s->stdio_file);
- struct stat st;
-
- ret = fstat(fd, &st);
- if (ret == 0 && S_ISREG(st.st_mode)) {
- /*
- * If the file handle is a regular file make sure the
- * data is flushed to disk before signaling success.
- */
- ret = fsync(fd);
- if (ret != 0) {
- ret = -errno;
- return ret;
- }
- }
- }
- if (fclose(s->stdio_file) == EOF) {
- ret = -errno;
- }
- g_free(s);
- return ret;
-}
-
-static const QEMUFileOps stdio_pipe_read_ops = {
- .get_fd = stdio_get_fd,
- .get_buffer = stdio_get_buffer,
- .close = stdio_pclose
-};
-
-static const QEMUFileOps stdio_pipe_write_ops = {
- .get_fd = stdio_get_fd,
- .put_buffer = stdio_put_buffer,
- .close = stdio_pclose
-};
-
-QEMUFile *qemu_popen_cmd(const char *command, const char *mode)
-{
- FILE *stdio_file;
- QEMUFileStdio *s;
-
- if (mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) {
- fprintf(stderr, "qemu_popen: Argument validity check failed\n");
- return NULL;
- }
-
- stdio_file = popen(command, mode);
- if (stdio_file == NULL) {
- return NULL;
- }
-
- s = g_malloc0(sizeof(QEMUFileStdio));
-
- s->stdio_file = stdio_file;
-
- if(mode[0] == 'r') {
- s->file = qemu_fopen_ops(s, &stdio_pipe_read_ops);
- } else {
- s->file = qemu_fopen_ops(s, &stdio_pipe_write_ops);
- }
- return s->file;
-}
-
-static const QEMUFileOps stdio_file_read_ops = {
- .get_fd = stdio_get_fd,
- .get_buffer = stdio_get_buffer,
- .close = stdio_fclose
-};
-
-static const QEMUFileOps stdio_file_write_ops = {
- .get_fd = stdio_get_fd,
- .put_buffer = stdio_put_buffer,
- .close = stdio_fclose
-};
-
-static ssize_t unix_writev_buffer(void *opaque, struct iovec *iov, int iovcnt,
- int64_t pos)
-{
- QEMUFileSocket *s = opaque;
- ssize_t len, offset;
- ssize_t size = iov_size(iov, iovcnt);
- ssize_t total = 0;
-
- assert(iovcnt > 0);
- offset = 0;
- while (size > 0) {
- /* Find the next start position; skip all full-sized vector elements */
- while (offset >= iov[0].iov_len) {
- offset -= iov[0].iov_len;
- iov++, iovcnt--;
- }
-
- /* skip `offset' bytes from the (now) first element, undo it on exit */
- assert(iovcnt > 0);
- iov[0].iov_base += offset;
- iov[0].iov_len -= offset;
-
- do {
- len = writev(s->fd, iov, iovcnt);
- } while (len == -1 && errno == EINTR);
- if (len == -1) {
- return -errno;
- }
-
- /* Undo the changes above */
- iov[0].iov_base -= offset;
- iov[0].iov_len += offset;
-
- /* Prepare for the next iteration */
- offset += len;
- total += len;
- size -= len;
- }
-
- return total;
-}
-
-static int unix_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
-{
- QEMUFileSocket *s = opaque;
- ssize_t len;
-
- for (;;) {
- len = read(s->fd, buf, size);
- if (len != -1) {
- break;
- }
- if (errno == EAGAIN) {
- yield_until_fd_readable(s->fd);
- } else if (errno != EINTR) {
- break;
- }
- }
-
- if (len == -1) {
- len = -errno;
- }
- return len;
-}
-
-static int unix_close(void *opaque)
-{
- QEMUFileSocket *s = opaque;
- close(s->fd);
- g_free(s);
- return 0;
-}
-
-static const QEMUFileOps unix_read_ops = {
- .get_fd = socket_get_fd,
- .get_buffer = unix_get_buffer,
- .close = unix_close
-};
-
-static const QEMUFileOps unix_write_ops = {
- .get_fd = socket_get_fd,
- .writev_buffer = unix_writev_buffer,
- .close = unix_close
-};
-
-QEMUFile *qemu_fdopen(int fd, const char *mode)
-{
- QEMUFileSocket *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 = g_malloc0(sizeof(QEMUFileSocket));
- s->fd = fd;
-
- if(mode[0] == 'r') {
- s->file = qemu_fopen_ops(s, &unix_read_ops);
- } else {
- s->file = qemu_fopen_ops(s, &unix_write_ops);
- }
- return s->file;
-}
-
-static const QEMUFileOps socket_read_ops = {
- .get_fd = socket_get_fd,
- .get_buffer = socket_get_buffer,
- .close = socket_close
-};
-
-static const QEMUFileOps socket_write_ops = {
- .get_fd = socket_get_fd,
- .writev_buffer = socket_writev_buffer,
- .close = socket_close
-};
-
-bool qemu_file_mode_is_not_valid(const char *mode)
-{
- if (mode == NULL ||
- (mode[0] != 'r' && mode[0] != 'w') ||
- mode[1] != 'b' || mode[2] != 0) {
- fprintf(stderr, "qemu_fopen: Argument validity check failed\n");
- return true;
- }
-
- return false;
-}
-
-QEMUFile *qemu_fopen_socket(int fd, const char *mode)
-{
- QEMUFileSocket *s;
-
- if (qemu_file_mode_is_not_valid(mode)) {
- return NULL;
- }
-
- s = g_malloc0(sizeof(QEMUFileSocket));
- s->fd = fd;
- if (mode[0] == 'w') {
- qemu_set_block(s->fd);
- s->file = qemu_fopen_ops(s, &socket_write_ops);
- } else {
- s->file = qemu_fopen_ops(s, &socket_read_ops);
- }
- return s->file;
-}
-
-QEMUFile *qemu_fopen(const char *filename, const char *mode)
-{
- QEMUFileStdio *s;
-
- if (qemu_file_mode_is_not_valid(mode)) {
- return NULL;
- }
-
- s = g_malloc0(sizeof(QEMUFileStdio));
-
- s->stdio_file = fopen(filename, mode);
- if (!s->stdio_file)
- goto fail;
-
- if(mode[0] == 'w') {
- s->file = qemu_fopen_ops(s, &stdio_file_write_ops);
- } else {
- s->file = qemu_fopen_ops(s, &stdio_file_read_ops);
- }
- return s->file;
-fail:
- g_free(s);
- return NULL;
-}
-
-static ssize_t block_writev_buffer(void *opaque, struct iovec *iov, int iovcnt,
- int64_t pos)
-{
- int ret;
- QEMUIOVector qiov;
-
- qemu_iovec_init_external(&qiov, iov, iovcnt);
- ret = bdrv_writev_vmstate(opaque, &qiov, pos);
- if (ret < 0) {
- return ret;
- }
-
- return qiov.size;
-}
-
-static int block_put_buffer(void *opaque, const uint8_t *buf,
- int64_t pos, int 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)
-{
- return bdrv_load_vmstate(opaque, buf, pos, size);
-}
-
-static int bdrv_fclose(void *opaque)
-{
- return bdrv_flush(opaque);
-}
-
-static const QEMUFileOps bdrv_read_ops = {
- .get_buffer = block_get_buffer,
- .close = bdrv_fclose
-};
-
-static const QEMUFileOps bdrv_write_ops = {
- .put_buffer = block_put_buffer,
- .writev_buffer = block_writev_buffer,
- .close = bdrv_fclose
-};
-
-static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable)
-{
- if (is_writable)
- return qemu_fopen_ops(bs, &bdrv_write_ops);
- return qemu_fopen_ops(bs, &bdrv_read_ops);
-}
-
-QEMUFile *qemu_fopen_ops(void *opaque, const QEMUFileOps *ops)
-{
- QEMUFile *f;
-
- f = g_malloc0(sizeof(QEMUFile));
-
- f->opaque = opaque;
- f->ops = ops;
- return f;
-}
-
-/*
- * Get last error for stream f
- *
- * Return negative error value if there has been an error on previous
- * operations, return 0 if no error happened.
- *
- */
-int qemu_file_get_error(QEMUFile *f)
-{
- return f->last_error;
-}
-
-static void qemu_file_set_error(QEMUFile *f, int ret)
-{
- if (f->last_error == 0) {
- f->last_error = ret;
- }
-}
-
-static inline bool qemu_file_is_writable(QEMUFile *f)
-{
- return f->ops->writev_buffer || f->ops->put_buffer;
-}
-
-/**
- * Flushes QEMUFile buffer
- *
- * If there is writev_buffer QEMUFileOps it uses it otherwise uses
- * put_buffer ops.
- */
-void qemu_fflush(QEMUFile *f)
-{
- ssize_t ret = 0;
-
- if (!qemu_file_is_writable(f)) {
- return;
- }
-
- if (f->ops->writev_buffer) {
- if (f->iovcnt > 0) {
- ret = f->ops->writev_buffer(f->opaque, f->iov, f->iovcnt, f->pos);
- }
- } else {
- if (f->buf_index > 0) {
- ret = f->ops->put_buffer(f->opaque, f->buf, f->pos, f->buf_index);
- }
- }
- if (ret >= 0) {
- f->pos += ret;
- }
- f->buf_index = 0;
- f->iovcnt = 0;
- if (ret < 0) {
- qemu_file_set_error(f, ret);
- }
-}
-
-void ram_control_before_iterate(QEMUFile *f, uint64_t flags)
-{
- int ret = 0;
-
- if (f->ops->before_ram_iterate) {
- ret = f->ops->before_ram_iterate(f, f->opaque, flags);
- if (ret < 0) {
- qemu_file_set_error(f, ret);
- }
- }
-}
-
-void ram_control_after_iterate(QEMUFile *f, uint64_t flags)
-{
- int ret = 0;
-
- if (f->ops->after_ram_iterate) {
- ret = f->ops->after_ram_iterate(f, f->opaque, flags);
- if (ret < 0) {
- qemu_file_set_error(f, ret);
- }
- }
-}
-
-void ram_control_load_hook(QEMUFile *f, uint64_t flags)
-{
- int ret = -EINVAL;
-
- if (f->ops->hook_ram_load) {
- ret = f->ops->hook_ram_load(f, f->opaque, flags);
- if (ret < 0) {
- qemu_file_set_error(f, ret);
- }
- } else {
- qemu_file_set_error(f, ret);
- }
-}
-
-size_t ram_control_save_page(QEMUFile *f, ram_addr_t block_offset,
- ram_addr_t offset, size_t size, int *bytes_sent)
-{
- if (f->ops->save_page) {
- int ret = f->ops->save_page(f, f->opaque, block_offset,
- offset, size, bytes_sent);
-
- if (ret != RAM_SAVE_CONTROL_DELAYED) {
- if (bytes_sent && *bytes_sent > 0) {
- qemu_update_position(f, *bytes_sent);
- } else if (ret < 0) {
- qemu_file_set_error(f, ret);
- }
- }
-
- return ret;
- }
-
- return RAM_SAVE_CONTROL_NOT_SUPP;
-}
-
-static void qemu_fill_buffer(QEMUFile *f)
-{
- int len;
- int pending;
-
- assert(!qemu_file_is_writable(f));
-
- pending = f->buf_size - f->buf_index;
- if (pending > 0) {
- memmove(f->buf, f->buf + f->buf_index, pending);
- }
- f->buf_index = 0;
- f->buf_size = pending;
-
- len = f->ops->get_buffer(f->opaque, f->buf + pending, f->pos,
- IO_BUF_SIZE - pending);
- if (len > 0) {
- f->buf_size += len;
- f->pos += len;
- } else if (len == 0) {
- qemu_file_set_error(f, -EIO);
- } else if (len != -EAGAIN)
- qemu_file_set_error(f, len);
-}
-
-int qemu_get_fd(QEMUFile *f)
-{
- if (f->ops->get_fd) {
- return f->ops->get_fd(f->opaque);
- }
- return -1;
-}
-
-void qemu_update_position(QEMUFile *f, size_t size)
-{
- f->pos += size;
-}
-
-/** Closes the file
- *
- * Returns negative error value if any error happened on previous operations or
- * while closing the file. Returns 0 or positive number on success.
- *
- * The meaning of return value on success depends on the specific backend
- * being used.
- */
-int qemu_fclose(QEMUFile *f)
-{
- int ret;
- qemu_fflush(f);
- ret = qemu_file_get_error(f);
-
- if (f->ops->close) {
- int ret2 = f->ops->close(f->opaque);
- if (ret >= 0) {
- ret = ret2;
- }
- }
- /* If any error was spotted before closing, we should report it
- * instead of the close() return value.
- */
- if (f->last_error) {
- ret = f->last_error;
- }
- g_free(f);
- return ret;
-}
-
-static void add_to_iovec(QEMUFile *f, const uint8_t *buf, int size)
-{
- /* check for adjacent buffer and coalesce them */
- if (f->iovcnt > 0 && buf == f->iov[f->iovcnt - 1].iov_base +
- f->iov[f->iovcnt - 1].iov_len) {
- f->iov[f->iovcnt - 1].iov_len += size;
- } else {
- f->iov[f->iovcnt].iov_base = (uint8_t *)buf;
- f->iov[f->iovcnt++].iov_len = size;
- }
-
- if (f->iovcnt >= MAX_IOV_SIZE) {
- qemu_fflush(f);
- }
-}
-
-void qemu_put_buffer_async(QEMUFile *f, const uint8_t *buf, int size)
-{
- if (!f->ops->writev_buffer) {
- qemu_put_buffer(f, buf, size);
- return;
- }
-
- if (f->last_error) {
- return;
- }
-
- f->bytes_xfer += size;
- add_to_iovec(f, buf, size);
-}
-
-void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size)
-{
- int l;
-
- if (f->last_error) {
- return;
- }
-
- while (size > 0) {
- l = IO_BUF_SIZE - f->buf_index;
- if (l > size)
- l = size;
- memcpy(f->buf + f->buf_index, buf, l);
- f->bytes_xfer += size;
- if (f->ops->writev_buffer) {
- add_to_iovec(f, f->buf + f->buf_index, l);
- }
- f->buf_index += l;
- if (f->buf_index == IO_BUF_SIZE) {
- qemu_fflush(f);
- }
- if (qemu_file_get_error(f)) {
- break;
- }
- buf += l;
- size -= l;
- }
-}
-
-void qemu_put_byte(QEMUFile *f, int v)
-{
- if (f->last_error) {
- return;
- }
-
- f->buf[f->buf_index] = v;
- f->bytes_xfer++;
- if (f->ops->writev_buffer) {
- add_to_iovec(f, f->buf + f->buf_index, 1);
- }
- f->buf_index++;
- if (f->buf_index == IO_BUF_SIZE) {
- qemu_fflush(f);
- }
-}
-
-static void qemu_file_skip(QEMUFile *f, int size)
-{
- if (f->buf_index + size <= f->buf_size) {
- f->buf_index += size;
- }
-}
-
-static int qemu_peek_buffer(QEMUFile *f, uint8_t *buf, int size, size_t offset)
-{
- int pending;
- int index;
-
- assert(!qemu_file_is_writable(f));
-
- index = f->buf_index + offset;
- pending = f->buf_size - index;
- if (pending < size) {
- qemu_fill_buffer(f);
- index = f->buf_index + offset;
- pending = f->buf_size - index;
- }
-
- if (pending <= 0) {
- return 0;
- }
- if (size > pending) {
- size = pending;
- }
-
- memcpy(buf, f->buf + index, size);
- return size;
-}
-
-int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size)
-{
- int pending = size;
- int done = 0;
-
- while (pending > 0) {
- int res;
-
- res = qemu_peek_buffer(f, buf, pending, 0);
- if (res == 0) {
- return done;
- }
- qemu_file_skip(f, res);
- buf += res;
- pending -= res;
- done += res;
- }
- return done;
-}
-
-static int qemu_peek_byte(QEMUFile *f, int offset)
-{
- int index = f->buf_index + offset;
-
- assert(!qemu_file_is_writable(f));
-
- if (index >= f->buf_size) {
- qemu_fill_buffer(f);
- index = f->buf_index + offset;
- if (index >= f->buf_size) {
- return 0;
- }
- }
- return f->buf[index];
-}
-
-int qemu_get_byte(QEMUFile *f)
-{
- int result;
-
- result = qemu_peek_byte(f, 0);
- qemu_file_skip(f, 1);
- return result;
-}
-
-int64_t qemu_ftell(QEMUFile *f)
-{
- qemu_fflush(f);
- return f->pos;
-}
-
-int qemu_file_rate_limit(QEMUFile *f)
-{
- if (qemu_file_get_error(f)) {
- return 1;
- }
- if (f->xfer_limit > 0 && f->bytes_xfer > f->xfer_limit) {
- return 1;
- }
- return 0;
-}
-
-int64_t qemu_file_get_rate_limit(QEMUFile *f)
-{
- return f->xfer_limit;
-}
-
-void qemu_file_set_rate_limit(QEMUFile *f, int64_t limit)
-{
- f->xfer_limit = limit;
-}
-
-void qemu_file_reset_rate_limit(QEMUFile *f)
-{
- f->bytes_xfer = 0;
-}
-
-void qemu_put_be16(QEMUFile *f, unsigned int v)
-{
- qemu_put_byte(f, v >> 8);
- qemu_put_byte(f, v);
-}
-
-void qemu_put_be32(QEMUFile *f, unsigned int v)
-{
- qemu_put_byte(f, v >> 24);
- qemu_put_byte(f, v >> 16);
- qemu_put_byte(f, v >> 8);
- qemu_put_byte(f, v);
-}
-
-void qemu_put_be64(QEMUFile *f, uint64_t v)
-{
- qemu_put_be32(f, v >> 32);
- qemu_put_be32(f, v);
-}
-
-unsigned int qemu_get_be16(QEMUFile *f)
-{
- unsigned int v;
- v = qemu_get_byte(f) << 8;
- v |= qemu_get_byte(f);
- return v;
-}
-
-unsigned int qemu_get_be32(QEMUFile *f)
-{
- unsigned int v;
- v = qemu_get_byte(f) << 24;
- v |= qemu_get_byte(f) << 16;
- v |= qemu_get_byte(f) << 8;
- v |= qemu_get_byte(f);
- return v;
-}
-
-uint64_t qemu_get_be64(QEMUFile *f)
-{
- uint64_t v;
- v = (uint64_t)qemu_get_be32(f) << 32;
- v |= qemu_get_be32(f);
- return v;
-}
-
-
-/* timer */
-
-void timer_put(QEMUFile *f, QEMUTimer *ts)
-{
- uint64_t expire_time;
-
- expire_time = timer_expire_time_ns(ts);
- qemu_put_be64(f, expire_time);
-}
-
-void timer_get(QEMUFile *f, QEMUTimer *ts)
-{
- uint64_t expire_time;
-
- expire_time = qemu_get_be64(f);
- if (expire_time != -1) {
- timer_mod_ns(ts, expire_time);
- } else {
- timer_del(ts);
- }
-}
-
-
-/* bool */
-
-static int get_bool(QEMUFile *f, void *pv, size_t size)
-{
- bool *v = pv;
- *v = qemu_get_byte(f);
- return 0;
-}
-
-static void put_bool(QEMUFile *f, void *pv, size_t size)
-{
- bool *v = pv;
- qemu_put_byte(f, *v);
-}
-
-const VMStateInfo vmstate_info_bool = {
- .name = "bool",
- .get = get_bool,
- .put = put_bool,
-};
-
-/* 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, void *pv, size_t size)
-{
- 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, void *pv, size_t size)
-{
- 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, void *pv, size_t size)
-{
- 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, void *pv, size_t size)
-{
- 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, void *pv, size_t size)
+static ssize_t block_writev_buffer(void *opaque, struct iovec *iov, int iovcnt,
+ int64_t pos)
{
- 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 */
+ int ret;
+ QEMUIOVector qiov;
-static int get_uint16(QEMUFile *f, void *pv, size_t size)
-{
- uint16_t *v = pv;
- qemu_get_be16s(f, v);
- return 0;
-}
+ qemu_iovec_init_external(&qiov, iov, iovcnt);
+ ret = bdrv_writev_vmstate(opaque, &qiov, pos);
+ if (ret < 0) {
+ return ret;
+ }
-static void put_uint16(QEMUFile *f, void *pv, size_t size)
-{
- uint16_t *v = pv;
- qemu_put_be16s(f, v);
+ return qiov.size;
}
-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)
+static int block_put_buffer(void *opaque, const uint8_t *buf,
+ int64_t pos, int size)
{
- uint32_t *v = pv;
- qemu_get_be32s(f, v);
- return 0;
+ bdrv_save_vmstate(opaque, buf, pos, size);
+ return size;
}
-static void put_uint32(QEMUFile *f, void *pv, size_t size)
+static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
{
- uint32_t *v = pv;
- qemu_put_be32s(f, v);
+ return bdrv_load_vmstate(opaque, buf, pos, size);
}
-const VMStateInfo vmstate_info_uint32 = {
- .name = "uint32",
- .get = get_uint32,
- .put = put_uint32,
-};
-
-/* 32 bit uint. See that the received value is the same than the one
- in the field */
-
-static int get_uint32_equal(QEMUFile *f, void *pv, size_t size)
+static int bdrv_fclose(void *opaque)
{
- uint32_t *v = pv;
- uint32_t v2;
- qemu_get_be32s(f, &v2);
-
- if (*v == v2) {
- return 0;
- }
- return -EINVAL;
+ return bdrv_flush(opaque);
}
-const VMStateInfo vmstate_info_uint32_equal = {
- .name = "uint32 equal",
- .get = get_uint32_equal,
- .put = put_uint32,
+static const QEMUFileOps bdrv_read_ops = {
+ .get_buffer = block_get_buffer,
+ .close = bdrv_fclose
};
-/* 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, void *pv, size_t size)
-{
- uint64_t *v = pv;
- qemu_put_be64s(f, v);
-}
-
-const VMStateInfo vmstate_info_uint64 = {
- .name = "uint64",
- .get = get_uint64,
- .put = put_uint64,
+static const QEMUFileOps bdrv_write_ops = {
+ .put_buffer = block_put_buffer,
+ .writev_buffer = block_writev_buffer,
+ .close = bdrv_fclose
};
-/* 64 bit unsigned int. See that the received value is the same than the one
- in the field */
-
-static int get_uint64_equal(QEMUFile *f, void *pv, size_t size)
+static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable)
{
- uint64_t *v = pv;
- uint64_t v2;
- qemu_get_be64s(f, &v2);
-
- if (*v == v2) {
- return 0;
+ if (is_writable) {
+ return qemu_fopen_ops(bs, &bdrv_write_ops);
}
- return -EINVAL;
-}
-
-const VMStateInfo vmstate_info_uint64_equal = {
- .name = "int64 equal",
- .get = get_uint64_equal,
- .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 = "uint8 equal",
- .get = get_uint8_equal,
- .put = put_uint8,
-};
-
-/* 16 bit unsigned int int. See that the received value is the same than the one
- in the field */
-
-static int get_uint16_equal(QEMUFile *f, void *pv, size_t size)
-{
- uint16_t *v = pv;
- uint16_t v2;
- qemu_get_be16s(f, &v2);
-
- if (*v == v2)
- return 0;
- return -EINVAL;
+ return qemu_fopen_ops(bs, &bdrv_read_ops);
}
-const VMStateInfo vmstate_info_uint16_equal = {
- .name = "uint16 equal",
- .get = get_uint16_equal,
- .put = put_uint16,
-};
-/* floating point */
+/* QEMUFile timer support.
+ * Not in qemu-file.c to not add qemu-timer.c as dependency to qemu-file.c
+ */
-static int get_float64(QEMUFile *f, void *pv, size_t size)
+void timer_put(QEMUFile *f, QEMUTimer *ts)
{
- float64 *v = pv;
+ uint64_t expire_time;
- *v = make_float64(qemu_get_be64(f));
- return 0;
+ expire_time = timer_expire_time_ns(ts);
+ qemu_put_be64(f, expire_time);
}
-static void put_float64(QEMUFile *f, void *pv, size_t size)
+void timer_get(QEMUFile *f, QEMUTimer *ts)
{
- uint64_t *v = pv;
+ uint64_t expire_time;
- qemu_put_be64(f, float64_val(*v));
+ expire_time = qemu_get_be64(f);
+ if (expire_time != -1) {
+ timer_mod_ns(ts, expire_time);
+ } else {
+ timer_del(ts);
+ }
}
-const VMStateInfo vmstate_info_float64 = {
- .name = "float64",
- .get = get_float64,
- .put = put_float64,
-};
-/* timers */
+/* VMState timer support.
+ * Not in vmstate.c to not add qemu-timer.c as dependency to vmstate.c
+ */
static int get_timer(QEMUFile *f, void *pv, size_t size)
{
.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;
-}
+typedef struct CompatEntry {
+ char idstr[256];
+ int instance_id;
+} CompatEntry;
-static void put_buffer(QEMUFile *f, void *pv, size_t size)
-{
- uint8_t *v = pv;
- qemu_put_buffer(f, v, size);
-}
+typedef struct SaveStateEntry {
+ QTAILQ_ENTRY(SaveStateEntry) entry;
+ char idstr[256];
+ int instance_id;
+ int alias_id;
+ int version_id;
+ int section_id;
+ SaveVMHandlers *ops;
+ const VMStateDescription *vmsd;
+ void *opaque;
+ CompatEntry *compat;
+ int is_ram;
+} SaveStateEntry;
-const VMStateInfo vmstate_info_buffer = {
- .name = "buffer",
- .get = get_buffer,
- .put = put_buffer,
-};
-/* unused buffers: space that was used for some fields that are
- not useful anymore */
+static QTAILQ_HEAD(savevm_handlers, SaveStateEntry) savevm_handlers =
+ QTAILQ_HEAD_INITIALIZER(savevm_handlers);
+static int global_section_id;
-static int get_unused_buffer(QEMUFile *f, void *pv, size_t size)
-{
- uint8_t buf[1024];
- int block_len;
+static void dump_vmstate_vmsd(FILE *out_file,
+ const VMStateDescription *vmsd, int indent,
+ bool is_subsection);
- while (size > 0) {
- block_len = MIN(sizeof(buf), size);
- size -= block_len;
- qemu_get_buffer(f, buf, block_len);
+static void dump_vmstate_vmsf(FILE *out_file, const VMStateField *field,
+ int indent)
+{
+ fprintf(out_file, "%*s{\n", indent, "");
+ indent += 2;
+ fprintf(out_file, "%*s\"field\": \"%s\",\n", indent, "", field->name);
+ fprintf(out_file, "%*s\"version_id\": %d,\n", indent, "",
+ field->version_id);
+ fprintf(out_file, "%*s\"field_exists\": %s,\n", indent, "",
+ field->field_exists ? "true" : "false");
+ fprintf(out_file, "%*s\"size\": %zu", indent, "", field->size);
+ if (field->vmsd != NULL) {
+ fprintf(out_file, ",\n");
+ dump_vmstate_vmsd(out_file, field->vmsd, indent, false);
}
- return 0;
+ fprintf(out_file, "\n%*s}", indent - 2, "");
}
-static void put_unused_buffer(QEMUFile *f, void *pv, size_t size)
+static void dump_vmstate_vmss(FILE *out_file,
+ const VMStateSubsection *subsection,
+ int indent)
{
- static const uint8_t buf[1024];
- int block_len;
-
- while (size > 0) {
- block_len = MIN(sizeof(buf), size);
- size -= block_len;
- qemu_put_buffer(f, buf, block_len);
+ if (subsection->vmsd != NULL) {
+ dump_vmstate_vmsd(out_file, subsection->vmsd, indent, true);
}
}
-const VMStateInfo vmstate_info_unused_buffer = {
- .name = "unused_buffer",
- .get = get_unused_buffer,
- .put = put_unused_buffer,
-};
-
-/* bitmaps (as defined by bitmap.h). Note that size here is the size
- * of the bitmap in bits. The on-the-wire format of a bitmap is 64
- * bit words with the bits in big endian order. The in-memory format
- * is an array of 'unsigned long', which may be either 32 or 64 bits.
- */
-/* This is the number of 64 bit words sent over the wire */
-#define BITS_TO_U64S(nr) DIV_ROUND_UP(nr, 64)
-static int get_bitmap(QEMUFile *f, void *pv, size_t size)
+static void dump_vmstate_vmsd(FILE *out_file,
+ const VMStateDescription *vmsd, int indent,
+ bool is_subsection)
{
- unsigned long *bmp = pv;
- int i, idx = 0;
- for (i = 0; i < BITS_TO_U64S(size); i++) {
- uint64_t w = qemu_get_be64(f);
- bmp[idx++] = w;
- if (sizeof(unsigned long) == 4 && idx < BITS_TO_LONGS(size)) {
- bmp[idx++] = w >> 32;
+ if (is_subsection) {
+ fprintf(out_file, "%*s{\n", indent, "");
+ } else {
+ fprintf(out_file, "%*s\"%s\": {\n", indent, "", "Description");
+ }
+ indent += 2;
+ fprintf(out_file, "%*s\"name\": \"%s\",\n", indent, "", vmsd->name);
+ fprintf(out_file, "%*s\"version_id\": %d,\n", indent, "",
+ vmsd->version_id);
+ fprintf(out_file, "%*s\"minimum_version_id\": %d", indent, "",
+ vmsd->minimum_version_id);
+ if (vmsd->fields != NULL) {
+ const VMStateField *field = vmsd->fields;
+ bool first;
+
+ fprintf(out_file, ",\n%*s\"Fields\": [\n", indent, "");
+ first = true;
+ while (field->name != NULL) {
+ if (field->flags & VMS_MUST_EXIST) {
+ /* Ignore VMSTATE_VALIDATE bits; these don't get migrated */
+ field++;
+ continue;
+ }
+ if (!first) {
+ fprintf(out_file, ",\n");
+ }
+ dump_vmstate_vmsf(out_file, field, indent + 2);
+ field++;
+ first = false;
}
+ fprintf(out_file, "\n%*s]", indent, "");
}
- return 0;
-}
+ if (vmsd->subsections != NULL) {
+ const VMStateSubsection *subsection = vmsd->subsections;
+ bool first;
-static void put_bitmap(QEMUFile *f, void *pv, size_t size)
-{
- unsigned long *bmp = pv;
- int i, idx = 0;
- for (i = 0; i < BITS_TO_U64S(size); i++) {
- uint64_t w = bmp[idx++];
- if (sizeof(unsigned long) == 4 && idx < BITS_TO_LONGS(size)) {
- w |= ((uint64_t)bmp[idx++]) << 32;
+ fprintf(out_file, ",\n%*s\"Subsections\": [\n", indent, "");
+ first = true;
+ while (subsection->vmsd != NULL) {
+ if (!first) {
+ fprintf(out_file, ",\n");
+ }
+ dump_vmstate_vmss(out_file, subsection, indent + 2);
+ subsection++;
+ first = false;
}
- qemu_put_be64(f, w);
+ fprintf(out_file, "\n%*s]", indent, "");
}
+ fprintf(out_file, "\n%*s}", indent - 2, "");
}
-const VMStateInfo vmstate_info_bitmap = {
- .name = "bitmap",
- .get = get_bitmap,
- .put = put_bitmap,
-};
+static void dump_machine_type(FILE *out_file)
+{
+ MachineClass *mc;
-typedef struct CompatEntry {
- char idstr[256];
- int instance_id;
-} CompatEntry;
+ mc = MACHINE_GET_CLASS(current_machine);
-typedef struct SaveStateEntry {
- QTAILQ_ENTRY(SaveStateEntry) entry;
- char idstr[256];
- int instance_id;
- int alias_id;
- int version_id;
- int section_id;
- SaveVMHandlers *ops;
- const VMStateDescription *vmsd;
- void *opaque;
- CompatEntry *compat;
- int no_migrate;
- int is_ram;
-} SaveStateEntry;
+ fprintf(out_file, " \"vmschkmachine\": {\n");
+ fprintf(out_file, " \"Name\": \"%s\"\n", mc->name);
+ fprintf(out_file, " },\n");
+}
+void dump_vmstate_json_to_file(FILE *out_file)
+{
+ GSList *list, *elt;
+ bool first;
-static QTAILQ_HEAD(savevm_handlers, SaveStateEntry) savevm_handlers =
- QTAILQ_HEAD_INITIALIZER(savevm_handlers);
-static int global_section_id;
+ fprintf(out_file, "{\n");
+ dump_machine_type(out_file);
+
+ first = true;
+ list = object_class_get_list(TYPE_DEVICE, true);
+ for (elt = list; elt; elt = elt->next) {
+ DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
+ TYPE_DEVICE);
+ const char *name;
+ int indent = 2;
+
+ if (!dc->vmsd) {
+ continue;
+ }
+
+ if (!first) {
+ fprintf(out_file, ",\n");
+ }
+ name = object_class_get_name(OBJECT_CLASS(dc));
+ fprintf(out_file, "%*s\"%s\": {\n", indent, "", name);
+ indent += 2;
+ fprintf(out_file, "%*s\"Name\": \"%s\",\n", indent, "", name);
+ fprintf(out_file, "%*s\"version_id\": %d,\n", indent, "",
+ dc->vmsd->version_id);
+ fprintf(out_file, "%*s\"minimum_version_id\": %d,\n", indent, "",
+ dc->vmsd->minimum_version_id);
+
+ dump_vmstate_vmsd(out_file, dc->vmsd, indent, false);
+
+ fprintf(out_file, "\n%*s}", indent - 2, "");
+ first = false;
+ }
+ fprintf(out_file, "\n}\n");
+ fclose(out_file);
+}
static int calculate_new_instance_id(const char *idstr)
{
int instance_id = 0;
QTAILQ_FOREACH(se, &savevm_handlers, entry) {
- if (!se->compat)
+ if (!se->compat) {
continue;
+ }
if (strcmp(idstr, se->compat->idstr) == 0
&& instance_id <= se->compat->instance_id) {
se->ops = ops;
se->opaque = opaque;
se->vmsd = NULL;
- se->no_migrate = 0;
/* if this is a live_savem then set is_ram */
if (ops->save_live_setup != NULL) {
se->is_ram = 1;
se->opaque = opaque;
se->vmsd = vmsd;
se->alias_id = alias_id;
- se->no_migrate = vmsd->unmigratable;
if (dev) {
char *id = qdev_get_dev_path(dev);
}
}
-static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd,
- void *opaque);
-static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd,
- void *opaque);
-
-int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
- void *opaque, int version_id)
-{
- VMStateField *field = vmsd->fields;
- int ret;
-
- 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->field_exists &&
- field->field_exists(opaque, version_id)) ||
- (!field->field_exists &&
- field->version_id <= version_id)) {
- void *base_addr = opaque + field->offset;
- int i, n_elems = 1;
- int size = field->size;
-
- if (field->flags & VMS_VBUFFER) {
- size = *(int32_t *)(opaque+field->size_offset);
- if (field->flags & VMS_MULTIPLY) {
- size *= field->size;
- }
- }
- if (field->flags & VMS_ARRAY) {
- n_elems = field->num;
- } else if (field->flags & VMS_VARRAY_INT32) {
- n_elems = *(int32_t *)(opaque+field->num_offset);
- } else if (field->flags & VMS_VARRAY_UINT32) {
- n_elems = *(uint32_t *)(opaque+field->num_offset);
- } else if (field->flags & VMS_VARRAY_UINT16) {
- n_elems = *(uint16_t *)(opaque+field->num_offset);
- } else if (field->flags & VMS_VARRAY_UINT8) {
- n_elems = *(uint8_t *)(opaque+field->num_offset);
- }
- if (field->flags & VMS_POINTER) {
- base_addr = *(void **)base_addr + field->start;
- }
- for (i = 0; i < n_elems; i++) {
- void *addr = base_addr + size * i;
-
- if (field->flags & VMS_ARRAY_OF_POINTER) {
- addr = *(void **)addr;
- }
- if (field->flags & VMS_STRUCT) {
- ret = vmstate_load_state(f, field->vmsd, addr, field->vmsd->version_id);
- } else {
- ret = field->info->get(f, addr, size);
-
- }
- if (ret < 0) {
- return ret;
- }
- }
- }
- field++;
- }
- ret = vmstate_subsection_load(f, vmsd, opaque);
- if (ret != 0) {
- return ret;
- }
- if (vmsd->post_load) {
- return vmsd->post_load(opaque, version_id);
- }
- return 0;
-}
-
-void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd,
- void *opaque)
-{
- VMStateField *field = vmsd->fields;
-
- if (vmsd->pre_save) {
- vmsd->pre_save(opaque);
- }
- while(field->name) {
- if (!field->field_exists ||
- field->field_exists(opaque, vmsd->version_id)) {
- void *base_addr = opaque + field->offset;
- int i, n_elems = 1;
- int size = field->size;
-
- if (field->flags & VMS_VBUFFER) {
- size = *(int32_t *)(opaque+field->size_offset);
- if (field->flags & VMS_MULTIPLY) {
- size *= field->size;
- }
- }
- if (field->flags & VMS_ARRAY) {
- n_elems = field->num;
- } else if (field->flags & VMS_VARRAY_INT32) {
- n_elems = *(int32_t *)(opaque+field->num_offset);
- } else if (field->flags & VMS_VARRAY_UINT32) {
- n_elems = *(uint32_t *)(opaque+field->num_offset);
- } else if (field->flags & VMS_VARRAY_UINT16) {
- n_elems = *(uint16_t *)(opaque+field->num_offset);
- } else if (field->flags & VMS_VARRAY_UINT8) {
- n_elems = *(uint8_t *)(opaque+field->num_offset);
- }
- if (field->flags & VMS_POINTER) {
- base_addr = *(void **)base_addr + field->start;
- }
- for (i = 0; i < n_elems; i++) {
- void *addr = base_addr + size * i;
-
- if (field->flags & VMS_ARRAY_OF_POINTER) {
- addr = *(void **)addr;
- }
- if (field->flags & VMS_STRUCT) {
- vmstate_save_state(f, field->vmsd, addr);
- } else {
- field->info->put(f, addr, size);
- }
- }
- }
- field++;
- }
- vmstate_subsection_save(f, vmsd, opaque);
-}
-
static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id)
{
+ trace_vmstate_load(se->idstr, se->vmsd ? se->vmsd->name : "(old)");
if (!se->vmsd) { /* Old style */
return se->ops->load_state(f, se->opaque, version_id);
}
static void vmstate_save(QEMUFile *f, SaveStateEntry *se)
{
+ trace_vmstate_save(se->idstr, se->vmsd ? se->vmsd->name : "(old)");
if (!se->vmsd) { /* Old style */
se->ops->save_state(f, se->opaque);
return;
}
- vmstate_save_state(f,se->vmsd, se->opaque);
+ 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
-
-#define QEMU_VM_EOF 0x00
-#define QEMU_VM_SECTION_START 0x01
-#define QEMU_VM_SECTION_PART 0x02
-#define QEMU_VM_SECTION_END 0x03
-#define QEMU_VM_SECTION_FULL 0x04
-#define QEMU_VM_SUBSECTION 0x05
-
bool qemu_savevm_state_blocked(Error **errp)
{
SaveStateEntry *se;
QTAILQ_FOREACH(se, &savevm_handlers, entry) {
- if (se->no_migrate) {
- error_set(errp, QERR_MIGRATION_NOT_SUPPORTED, se->idstr);
+ if (se->vmsd && se->vmsd->unmigratable) {
+ error_setg(errp, "State blocked by non-migratable device '%s'",
+ se->idstr);
return true;
}
}
SaveStateEntry *se;
int ret;
+ trace_savevm_state_begin();
QTAILQ_FOREACH(se, &savevm_handlers, entry) {
if (!se->ops || !se->ops->set_params) {
continue;
}
se->ops->set_params(params, se->opaque);
}
-
+
qemu_put_be32(f, QEMU_VM_FILE_MAGIC);
qemu_put_be32(f, QEMU_VM_FILE_VERSION);
SaveStateEntry *se;
int ret = 1;
+ trace_savevm_state_iterate();
QTAILQ_FOREACH(se, &savevm_handlers, entry) {
if (!se->ops || !se->ops->save_live_iterate) {
continue;
if (qemu_file_rate_limit(f)) {
return 0;
}
- trace_savevm_section_start();
+ trace_savevm_section_start(se->idstr, se->section_id);
/* Section type */
qemu_put_byte(f, QEMU_VM_SECTION_PART);
qemu_put_be32(f, se->section_id);
ret = se->ops->save_live_iterate(f, se->opaque);
- trace_savevm_section_end(se->section_id);
+ trace_savevm_section_end(se->idstr, se->section_id);
if (ret < 0) {
qemu_file_set_error(f, ret);
SaveStateEntry *se;
int ret;
+ trace_savevm_state_complete();
+
cpu_synchronize_all_states();
QTAILQ_FOREACH(se, &savevm_handlers, entry) {
continue;
}
}
- trace_savevm_section_start();
+ trace_savevm_section_start(se->idstr, se->section_id);
/* Section type */
qemu_put_byte(f, QEMU_VM_SECTION_END);
qemu_put_be32(f, se->section_id);
ret = se->ops->save_live_complete(f, se->opaque);
- trace_savevm_section_end(se->section_id);
+ trace_savevm_section_end(se->idstr, se->section_id);
if (ret < 0) {
qemu_file_set_error(f, ret);
return;
int len;
if ((!se->ops || !se->ops->save_state) && !se->vmsd) {
- continue;
+ continue;
}
- trace_savevm_section_start();
+ trace_savevm_section_start(se->idstr, se->section_id);
/* Section type */
qemu_put_byte(f, QEMU_VM_SECTION_FULL);
qemu_put_be32(f, se->section_id);
qemu_put_be32(f, se->version_id);
vmstate_save(f, se);
- trace_savevm_section_end(se->section_id);
+ trace_savevm_section_end(se->idstr, se->section_id);
}
qemu_put_byte(f, QEMU_VM_EOF);
{
SaveStateEntry *se;
+ trace_savevm_state_cancel();
QTAILQ_FOREACH(se, &savevm_handlers, entry) {
if (se->ops && se->ops->cancel) {
se->ops->cancel(se->opaque);
return NULL;
}
-static const VMStateDescription *vmstate_get_subsection(const VMStateSubsection *sub, char *idstr)
-{
- while(sub && sub->needed) {
- if (strcmp(idstr, sub->vmsd->name) == 0) {
- return sub->vmsd;
- }
- sub++;
- }
- return NULL;
-}
-
-static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd,
- void *opaque)
-{
- while (qemu_peek_byte(f, 0) == QEMU_VM_SUBSECTION) {
- char idstr[256];
- int ret;
- uint8_t version_id, len, size;
- const VMStateDescription *sub_vmsd;
-
- len = qemu_peek_byte(f, 1);
- if (len < strlen(vmsd->name) + 1) {
- /* subsection name has be be "section_name/a" */
- return 0;
- }
- size = qemu_peek_buffer(f, (uint8_t *)idstr, len, 2);
- if (size != len) {
- return 0;
- }
- idstr[size] = 0;
-
- if (strncmp(vmsd->name, idstr, strlen(vmsd->name)) != 0) {
- /* it don't have a valid subsection name */
- return 0;
- }
- sub_vmsd = vmstate_get_subsection(vmsd->subsections, idstr);
- if (sub_vmsd == NULL) {
- return -ENOENT;
- }
- qemu_file_skip(f, 1); /* subsection */
- qemu_file_skip(f, 1); /* len */
- qemu_file_skip(f, len); /* idstr */
- version_id = qemu_get_be32(f);
-
- ret = vmstate_load_state(f, sub_vmsd, opaque, version_id);
- if (ret) {
- return ret;
- }
- }
- return 0;
-}
-
-static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd,
- void *opaque)
-{
- const VMStateSubsection *sub = vmsd->subsections;
-
- while (sub && sub->needed) {
- if (sub->needed(opaque)) {
- const VMStateDescription *vmsd = sub->vmsd;
- uint8_t len;
-
- qemu_put_byte(f, QEMU_VM_SUBSECTION);
- len = strlen(vmsd->name);
- qemu_put_byte(f, len);
- qemu_put_buffer(f, (uint8_t *)vmsd->name, len);
- qemu_put_be32(f, vmsd->version_id);
- vmstate_save_state(f, vmsd, opaque);
- }
- sub++;
- }
-}
-
typedef struct LoadStateEntry {
QLIST_ENTRY(LoadStateEntry) entry;
SaveStateEntry *se;
}
v = qemu_get_be32(f);
- if (v != QEMU_VM_FILE_MAGIC)
+ if (v != QEMU_VM_FILE_MAGIC) {
return -EINVAL;
+ }
v = qemu_get_be32(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)
+ 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;
bs = NULL;
while ((bs = bdrv_next(bs))) {
if (bdrv_can_snapshot(bs) &&
- bdrv_snapshot_find(bs, snapshot, name) >= 0)
- {
+ bdrv_snapshot_find(bs, snapshot, name) >= 0) {
bdrv_snapshot_delete_by_id_or_name(bs, name, &err);
- if (error_is_set(&err)) {
+ if (err) {
monitor_printf(mon,
"Error while deleting snapshot on device '%s':"
" %s\n",
}
the_end:
- if (saved_vm_running)
+ if (saved_vm_running) {
vm_start();
+ }
}
void qmp_xen_save_devices_state(const char *filename, Error **errp)
}
the_end:
- if (saved_vm_running)
+ if (saved_vm_running) {
vm_start();
+ }
}
int load_vmstate(const char *name)
void do_delvm(Monitor *mon, const QDict *qdict)
{
- BlockDriverState *bs, *bs1;
- Error *err = NULL;
+ BlockDriverState *bs;
+ Error *err;
const char *name = qdict_get_str(qdict, "name");
- bs = find_vmstate_bs();
- if (!bs) {
+ if (!find_vmstate_bs()) {
monitor_printf(mon, "No block device supports snapshots\n");
return;
}
- bs1 = NULL;
- while ((bs1 = bdrv_next(bs1))) {
- if (bdrv_can_snapshot(bs1)) {
+ bs = NULL;
+ while ((bs = bdrv_next(bs))) {
+ if (bdrv_can_snapshot(bs)) {
+ err = NULL;
bdrv_snapshot_delete_by_id_or_name(bs, name, &err);
- if (error_is_set(&err)) {
+ if (err) {
monitor_printf(mon,
"Error while deleting snapshot on device '%s':"
" %s\n",
void vmstate_unregister_ram(MemoryRegion *mr, DeviceState *dev)
{
- /* Nothing do to while the implementation is in RAMBlock */
+ qemu_ram_unset_idstr(memory_region_get_ram_addr(mr) & TARGET_PAGE_MASK);
}
void vmstate_register_ram_global(MemoryRegion *mr)
projects / mirror_qemu.git / blobdiff