diff --git a/Makefile.objs b/Makefile.objs
index d465a72..ab3f866 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -48,7 +48,7 @@ common-obj-$(CONFIG_LINUX) += fsdev/
 extra-obj-$(CONFIG_LINUX) += fsdev/
 
 common-obj-y += migration.o migration-tcp.o
-common-obj-y += qemu-char.o #aio.o
+common-obj-y += qemu-char.o qemu-file.o #aio.o
 common-obj-y += block-migration.o
 common-obj-y += page_cache.o
 
diff --git a/include/migration/qemu-file.h b/include/migration/qemu-file.h
index 68deefb..bd78a8f 100644
--- a/include/migration/qemu-file.h
+++ b/include/migration/qemu-file.h
@@ -112,6 +112,11 @@ int qemu_file_rate_limit(QEMUFile *f);
 int64_t qemu_file_set_rate_limit(QEMUFile *f, int64_t new_rate);
 int64_t qemu_file_get_rate_limit(QEMUFile *f);
 int qemu_file_get_error(QEMUFile *f);
+QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable);
+int64_t qemu_ftell(QEMUFile *f);
+int qemu_peek_buffer(QEMUFile *f, uint8_t *buf, int size, size_t offset);
+int qemu_peek_byte(QEMUFile *f, int offset);
+void qemu_file_skip(QEMUFile *f, int size);
 
 static inline void qemu_put_be64s(QEMUFile *f, const uint64_t *pv)
 {
diff --git a/qemu-file.c b/qemu-file.c
new file mode 100644
index 0000000..17fb10e
--- /dev/null
+++ b/qemu-file.c
@@ -0,0 +1,638 @@
+/*
+ * QEMU System Emulator
+ *
+ * Copyright (c) 2003-2008 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "qemu-common.h"
+#include "hw/hw.h"
+#include "block/block.h"
+#include "qemu/sockets.h"
+
+#define IO_BUF_SIZE 32768
+
+struct QEMUFile {
+    const QEMUFileOps *ops;
+    void *opaque;
+    int is_write;
+
+    int64_t buf_offset; /* 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];
+
+    int last_error;
+};
+
+typedef struct QEMUFileStdio
+{
+    FILE *stdio_file;
+    QEMUFile *file;
+} QEMUFileStdio;
+
+typedef struct QEMUFileSocket
+{
+    int fd;
+    QEMUFile *file;
+} QEMUFileSocket;
+
+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) {
+            assert(qemu_in_coroutine());
+            qemu_coroutine_yield();
+        } 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) {
+            assert(qemu_in_coroutine());
+            qemu_coroutine_yield();
+        } 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;
+    }
+    g_free(s);
+    return ret;
+}
+
+static int stdio_fclose(void *opaque)
+{
+    QEMUFileStdio *s = opaque;
+    int ret = 0;
+    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(FILE *stdio_file, const char *mode)
+{
+    QEMUFileStdio *s;
+
+    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 = 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;
+}
+
+QEMUFile *qemu_popen_cmd(const char *command, const char *mode)
+{
+    FILE *popen_file;
+
+    popen_file = popen(command, mode);
+    if(popen_file == NULL) {
+        return NULL;
+    }
+
+    return qemu_popen(popen_file, mode);
+}
+
+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
+};
+
+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 = g_malloc0(sizeof(QEMUFileStdio));
+    s->stdio_file = fdopen(fd, mode);
+    if (!s->stdio_file)
+        goto fail;
+
+    if(mode[0] == 'r') {
+        s->file = qemu_fopen_ops(s, &stdio_file_read_ops);
+    } else {
+        s->file = qemu_fopen_ops(s, &stdio_file_write_ops);
+    }
+    return s->file;
+
+fail:
+    g_free(s);
+    return NULL;
+}
+
+static const QEMUFileOps socket_read_ops = {
+    .get_fd =     socket_get_fd,
+    .get_buffer = socket_get_buffer,
+    .close =      socket_close
+};
+
+QEMUFile *qemu_fopen_socket(int fd)
+{
+    QEMUFileSocket *s = g_malloc0(sizeof(QEMUFileSocket));
+
+    s->fd = fd;
+    s->file = qemu_fopen_ops(s, &socket_read_ops);
+    return s->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_fopen: Argument validity check failed\n");
+        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 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,
+    .close =      bdrv_fclose
+};
+
+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;
+    f->is_write = 0;
+
+    return f;
+}
+
+int qemu_file_get_error(QEMUFile *f)
+{
+    return f->last_error;
+}
+
+static void qemu_file_set_error(QEMUFile *f, int ret)
+{
+    f->last_error = ret;
+}
+
+/** Flushes QEMUFile buffer
+ *
+ */
+static int qemu_fflush(QEMUFile *f)
+{
+    int ret = 0;
+
+    if (!f->ops->put_buffer)
+        return 0;
+
+    if (f->is_write && f->buf_index > 0) {
+        ret = f->ops->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index);
+        if (ret >= 0) {
+            f->buf_offset += f->buf_index;
+        }
+        f->buf_index = 0;
+    }
+    return ret;
+}
+
+static void qemu_fill_buffer(QEMUFile *f)
+{
+    int len;
+    int pending;
+
+    if (!f->ops->get_buffer)
+        return;
+
+    if (f->is_write)
+        abort();
+
+    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->buf_offset,
+                        IO_BUF_SIZE - pending);
+    if (len > 0) {
+        f->buf_size += len;
+        f->buf_offset += 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;
+}
+
+/** 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;
+    ret = qemu_fflush(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;
+}
+
+void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size)
+{
+    int l;
+
+    if (f->last_error) {
+        return;
+    }
+
+    if (f->is_write == 0 && f->buf_index > 0) {
+        fprintf(stderr,
+                "Attempted to write to buffer while read buffer is not empty\n");
+        abort();
+    }
+
+    while (size > 0) {
+        l = IO_BUF_SIZE - f->buf_index;
+        if (l > size)
+            l = size;
+        memcpy(f->buf + f->buf_index, buf, l);
+        f->is_write = 1;
+        f->buf_index += l;
+        buf += l;
+        size -= l;
+        if (f->buf_index >= IO_BUF_SIZE) {
+            int ret = qemu_fflush(f);
+            if (ret < 0) {
+                qemu_file_set_error(f, ret);
+                break;
+            }
+        }
+    }
+}
+
+void qemu_put_byte(QEMUFile *f, int v)
+{
+    if (f->last_error) {
+        return;
+    }
+
+    if (f->is_write == 0 && f->buf_index > 0) {
+        fprintf(stderr,
+                "Attempted to write to buffer while read buffer is not empty\n");
+        abort();
+    }
+
+    f->buf[f->buf_index++] = v;
+    f->is_write = 1;
+    if (f->buf_index >= IO_BUF_SIZE) {
+        int ret = qemu_fflush(f);
+        if (ret < 0) {
+            qemu_file_set_error(f, ret);
+        }
+    }
+}
+
+void qemu_file_skip(QEMUFile *f, int size)
+{
+    if (f->buf_index + size <= f->buf_size) {
+        f->buf_index += size;
+    }
+}
+
+int qemu_peek_buffer(QEMUFile *f, uint8_t *buf, int size, size_t offset)
+{
+    int pending;
+    int index;
+
+    if (f->is_write) {
+        abort();
+    }
+
+    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;
+}
+
+int qemu_peek_byte(QEMUFile *f, int offset)
+{
+    int index = f->buf_index + offset;
+
+    if (f->is_write) {
+        abort();
+    }
+
+    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)
+{
+    return f->buf_offset - f->buf_size + f->buf_index;
+}
+
+int qemu_file_rate_limit(QEMUFile *f)
+{
+    if (f->ops->rate_limit)
+        return f->ops->rate_limit(f->opaque);
+
+    return 0;
+}
+
+int64_t qemu_file_get_rate_limit(QEMUFile *f)
+{
+    if (f->ops->get_rate_limit)
+        return f->ops->get_rate_limit(f->opaque);
+
+    return 0;
+}
+
+int64_t qemu_file_set_rate_limit(QEMUFile *f, int64_t new_rate)
+{
+    /* any failed or completed migration keeps its state to allow probing of
+     * migration data, but has no associated file anymore */
+    if (f && f->ops->set_rate_limit)
+        return f->ops->set_rate_limit(f->opaque, new_rate);
+
+    return 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;
+}
+
diff --git a/savevm.c b/savevm.c
index d9ff1d9..4874f76 100644
--- a/savevm.c
+++ b/savevm.c
@@ -109,619 +109,6 @@ void qemu_announce_self(void)
 	qemu_announce_self_once(&timer);
 }
 
-/***********************************************************/
-/* savevm/loadvm support */
-
-#define IO_BUF_SIZE 32768
-
-struct QEMUFile {
-    const QEMUFileOps *ops;
-    void *opaque;
-    int is_write;
-
-    int64_t buf_offset; /* 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];
-
-    int last_error;
-};
-
-typedef struct QEMUFileStdio
-{
-    FILE *stdio_file;
-    QEMUFile *file;
-} QEMUFileStdio;
-
-typedef struct QEMUFileSocket
-{
-    int fd;
-    QEMUFile *file;
-} QEMUFileSocket;
-
-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) {
-            assert(qemu_in_coroutine());
-            qemu_coroutine_yield();
-        } 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) {
-            assert(qemu_in_coroutine());
-            qemu_coroutine_yield();
-        } 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;
-    }
-    g_free(s);
-    return ret;
-}
-
-static int stdio_fclose(void *opaque)
-{
-    QEMUFileStdio *s = opaque;
-    int ret = 0;
-    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(FILE *stdio_file, const char *mode)
-{
-    QEMUFileStdio *s;
-
-    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 = 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;
-}
-
-QEMUFile *qemu_popen_cmd(const char *command, const char *mode)
-{
-    FILE *popen_file;
-
-    popen_file = popen(command, mode);
-    if(popen_file == NULL) {
-        return NULL;
-    }
-
-    return qemu_popen(popen_file, mode);
-}
-
-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
-};
-
-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 = g_malloc0(sizeof(QEMUFileStdio));
-    s->stdio_file = fdopen(fd, mode);
-    if (!s->stdio_file)
-        goto fail;
-
-    if(mode[0] == 'r') {
-        s->file = qemu_fopen_ops(s, &stdio_file_read_ops);
-    } else {
-        s->file = qemu_fopen_ops(s, &stdio_file_write_ops);
-    }
-    return s->file;
-
-fail:
-    g_free(s);
-    return NULL;
-}
-
-static const QEMUFileOps socket_read_ops = {
-    .get_fd =     socket_get_fd,
-    .get_buffer = socket_get_buffer,
-    .close =      socket_close
-};
-
-QEMUFile *qemu_fopen_socket(int fd)
-{
-    QEMUFileSocket *s = g_malloc0(sizeof(QEMUFileSocket));
-
-    s->fd = fd;
-    s->file = qemu_fopen_ops(s, &socket_read_ops);
-    return s->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_fopen: Argument validity check failed\n");
-        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 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,
-    .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;
-    f->is_write = 0;
-
-    return f;
-}
-
-int qemu_file_get_error(QEMUFile *f)
-{
-    return f->last_error;
-}
-
-static void qemu_file_set_error(QEMUFile *f, int ret)
-{
-    f->last_error = ret;
-}
-
-/** Flushes QEMUFile buffer
- *
- */
-static int qemu_fflush(QEMUFile *f)
-{
-    int ret = 0;
-
-    if (!f->ops->put_buffer)
-        return 0;
-
-    if (f->is_write && f->buf_index > 0) {
-        ret = f->ops->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index);
-        if (ret >= 0) {
-            f->buf_offset += f->buf_index;
-        }
-        f->buf_index = 0;
-    }
-    return ret;
-}
-
-static void qemu_fill_buffer(QEMUFile *f)
-{
-    int len;
-    int pending;
-
-    if (!f->ops->get_buffer)
-        return;
-
-    if (f->is_write)
-        abort();
-
-    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->buf_offset,
-                        IO_BUF_SIZE - pending);
-    if (len > 0) {
-        f->buf_size += len;
-        f->buf_offset += 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;
-}
-
-/** 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;
-    ret = qemu_fflush(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;
-}
-
-void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size)
-{
-    int l;
-
-    if (f->last_error) {
-        return;
-    }
-
-    if (f->is_write == 0 && f->buf_index > 0) {
-        fprintf(stderr,
-                "Attempted to write to buffer while read buffer is not empty\n");
-        abort();
-    }
-
-    while (size > 0) {
-        l = IO_BUF_SIZE - f->buf_index;
-        if (l > size)
-            l = size;
-        memcpy(f->buf + f->buf_index, buf, l);
-        f->is_write = 1;
-        f->buf_index += l;
-        buf += l;
-        size -= l;
-        if (f->buf_index >= IO_BUF_SIZE) {
-            int ret = qemu_fflush(f);
-            if (ret < 0) {
-                qemu_file_set_error(f, ret);
-                break;
-            }
-        }
-    }
-}
-
-void qemu_put_byte(QEMUFile *f, int v)
-{
-    if (f->last_error) {
-        return;
-    }
-
-    if (f->is_write == 0 && f->buf_index > 0) {
-        fprintf(stderr,
-                "Attempted to write to buffer while read buffer is not empty\n");
-        abort();
-    }
-
-    f->buf[f->buf_index++] = v;
-    f->is_write = 1;
-    if (f->buf_index >= IO_BUF_SIZE) {
-        int ret = qemu_fflush(f);
-        if (ret < 0) {
-            qemu_file_set_error(f, ret);
-        }
-    }
-}
-
-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;
-
-    if (f->is_write) {
-        abort();
-    }
-
-    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;
-
-    if (f->is_write) {
-        abort();
-    }
-
-    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;
-}
-
-static int64_t qemu_ftell(QEMUFile *f)
-{
-    return f->buf_offset - f->buf_size + f->buf_index;
-}
-
-int qemu_file_rate_limit(QEMUFile *f)
-{
-    if (f->ops->rate_limit)
-        return f->ops->rate_limit(f->opaque);
-
-    return 0;
-}
-
-int64_t qemu_file_get_rate_limit(QEMUFile *f)
-{
-    if (f->ops->get_rate_limit)
-        return f->ops->get_rate_limit(f->opaque);
-
-    return 0;
-}
-
-int64_t qemu_file_set_rate_limit(QEMUFile *f, int64_t new_rate)
-{
-    /* any failed or completed migration keeps its state to allow probing of
-     * migration data, but has no associated file anymore */
-    if (f && f->ops->set_rate_limit)
-        return f->ops->set_rate_limit(f->opaque, new_rate);
-
-    return 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 */
 
