Merge remote-tracking branch 'bonzini/migr-coroutine' into staging

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

* bonzini/migr-coroutine:
  migration: move process_incoming_migration to a coroutine
  migration: handle EAGAIN while reading QEMUFile
  migration: move qemu_fclose to process_incoming_migration
  migration: close socket QEMUFile from socket_close
  migration: xxx_close will only be called once
  migration: use closesocket, not close
  migration: use migrate_fd_close in migrate_fd_cleanup
  migration: clean up server sockets and handlers before invoking process_incoming_migration
  migration: replace qemu_stdio_fd with qemu_get_fd
  migration: add qemu_get_fd
  migration: consolidate QEMUFile methods in a single QEMUFileOps struct
  migration: unify stdio-based QEMUFile operations

1 files changed, 16 insertions, 7 deletions

diff --git a/qemu-file.h b/qemu-file.h
index 9c8985b610..d64bdbb19b 100644
--- a/qemu-file.h
+++ b/qemu-file.h
@@ -47,6 +47,10 @@ typedef int (QEMUFileGetBufferFunc)(void *opaque, uint8_t *buf,
  */
 typedef int (QEMUFileCloseFunc)(void *opaque);
 
+/* Called to return the OS file descriptor associated to the QEMUFile.
+ */
+typedef int (QEMUFileGetFD)(void *opaque);
+
 /* Called to determine if the file has exceeded its bandwidth allocation.  The
  * bandwidth capping is a soft limit, not a hard limit.
  */
@@ -59,18 +63,23 @@ typedef int (QEMUFileRateLimit)(void *opaque);
 typedef int64_t (QEMUFileSetRateLimit)(void *opaque, int64_t new_rate);
 typedef int64_t (QEMUFileGetRateLimit)(void *opaque);
 
-QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer,
-                         QEMUFileGetBufferFunc *get_buffer,
-                         QEMUFileCloseFunc *close,
-                         QEMUFileRateLimit *rate_limit,
-                         QEMUFileSetRateLimit *set_rate_limit,
-                         QEMUFileGetRateLimit *get_rate_limit);
+typedef struct QEMUFileOps {
+    QEMUFilePutBufferFunc *put_buffer;
+    QEMUFileGetBufferFunc *get_buffer;
+    QEMUFileCloseFunc *close;
+    QEMUFileGetFD *get_fd;
+    QEMUFileRateLimit *rate_limit;
+    QEMUFileSetRateLimit *set_rate_limit;
+    QEMUFileGetRateLimit *get_rate_limit;
+} QEMUFileOps;
+
+QEMUFile *qemu_fopen_ops(void *opaque, const QEMUFileOps *ops);
 QEMUFile *qemu_fopen(const char *filename, const char *mode);
 QEMUFile *qemu_fdopen(int fd, const char *mode);
 QEMUFile *qemu_fopen_socket(int fd);
 QEMUFile *qemu_popen(FILE *popen_file, const char *mode);
 QEMUFile *qemu_popen_cmd(const char *command, const char *mode);
-int qemu_stdio_fd(QEMUFile *f);
+int qemu_get_fd(QEMUFile *f);
 int qemu_fclose(QEMUFile *f);
 void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size);
 void qemu_put_byte(QEMUFile *f, int v);