linux-user: add nested netlink types

[mirror_qemu.git] / include / migration / qemu-file.h

diff --git a/include/migration/qemu-file.h b/include/migration/qemu-file.h
index 66e741f64995d47bf041047c01b514af9de56492..abedd466c945d4bd8a96aec519787338054a5231 100644 (file)
--- a/include/migration/qemu-file.h
+++ b/include/migration/qemu-file.h
@@ -21,18 +21,14 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+
 #ifndef QEMU_FILE_H
-#define QEMU_FILE_H 1
-#include "exec/cpu-common.h"
+#define QEMU_FILE_H
 
-#include <stdint.h>
+#include "qemu-common.h"
+#include "exec/cpu-common.h"
+#include "io/channel.h"
 
-/* This function writes a chunk of data to a file at the given position.
- * The pos argument can be ignored if the file is only being used for
- * streaming.  The handler should try to write all of the data it can.
- */
-typedef ssize_t (QEMUFilePutBufferFunc)(void *opaque, const uint8_t *buf,
-                                        int64_t pos, size_t size);
 
 /* Read a chunk of data from a file at the given position.  The pos argument
  * can be ignored if the file is only be used for streaming.  The number of
@@ -54,8 +50,13 @@ typedef int (QEMUFileCloseFunc)(void *opaque);
  */
 typedef int (QEMUFileGetFD)(void *opaque);
 
+/* Called to change the blocking mode of the file
+ */
+typedef int (QEMUFileSetBlocking)(void *opaque, bool enabled);
+
 /*
- * This function writes an iovec to file.
+ * This function writes an iovec to file. The handler must write all
+ * of the data or return a negative errno value.
  */
 typedef ssize_t (QEMUFileWritevBufferFunc)(void *opaque, struct iovec *iov,
                                            int iovcnt, int64_t pos);
@@ -88,6 +89,11 @@ typedef size_t (QEMURamSaveFunc)(QEMUFile *f, void *opaque,
                                size_t size,
                                uint64_t *bytes_sent);
 
+/*
+ * Return a QEMUFile for comms in the opposite direction
+ */
+typedef QEMUFile *(QEMURetPathFunc)(void *opaque);
+
 /*
  * Stop any read or write (depending on flags) on the underlying
  * transport on the QEMUFile.
@@ -97,31 +103,25 @@ typedef size_t (QEMURamSaveFunc)(QEMUFile *f, void *opaque,
 typedef int (QEMUFileShutdownFunc)(void *opaque, bool rd, bool wr);
 
 typedef struct QEMUFileOps {
-    QEMUFilePutBufferFunc *put_buffer;
     QEMUFileGetBufferFunc *get_buffer;
     QEMUFileCloseFunc *close;
-    QEMUFileGetFD *get_fd;
+    QEMUFileSetBlocking *set_blocking;
     QEMUFileWritevBufferFunc *writev_buffer;
+    QEMURetPathFunc *get_return_path;
+    QEMUFileShutdownFunc *shut_down;
+} QEMUFileOps;
+
+typedef struct QEMUFileHooks {
     QEMURamHookFunc *before_ram_iterate;
     QEMURamHookFunc *after_ram_iterate;
     QEMURamHookFunc *hook_ram_load;
     QEMURamSaveFunc *save_page;
-    QEMUFileShutdownFunc *shut_down;
-} QEMUFileOps;
-
-struct QEMUSizedBuffer {
-    struct iovec *iov;
-    size_t n_iov;
-    size_t size; /* total allocated size in all iov's */
-    size_t used; /* number of used bytes */
-};
+} QEMUFileHooks;
 
 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, const char *mode);
-QEMUFile *qemu_popen_cmd(const char *command, const char *mode);
-QEMUFile *qemu_bufopen(const char *mode, QEMUSizedBuffer *input);
+QEMUFile *qemu_fopen_channel_input(QIOChannel *ioc);
+QEMUFile *qemu_fopen_channel_output(QIOChannel *ioc);
+void qemu_file_set_hooks(QEMUFile *f, const QEMUFileHooks *hooks);
 int qemu_get_fd(QEMUFile *f);
 int qemu_fclose(QEMUFile *f);
 int64_t qemu_ftell(QEMUFile *f);
@@ -136,20 +136,6 @@ void qemu_put_buffer_async(QEMUFile *f, const uint8_t *buf, size_t size);
 bool qemu_file_mode_is_not_valid(const char *mode);
 bool qemu_file_is_writable(QEMUFile *f);
 
-QEMUSizedBuffer *qsb_create(const uint8_t *buffer, size_t len);
-void qsb_free(QEMUSizedBuffer *);
-size_t qsb_set_length(QEMUSizedBuffer *qsb, size_t length);
-size_t qsb_get_length(const QEMUSizedBuffer *qsb);
-ssize_t qsb_get_buffer(const QEMUSizedBuffer *, off_t start, size_t count,
-                       uint8_t *buf);
-ssize_t qsb_write_at(QEMUSizedBuffer *qsb, const uint8_t *buf,
-                     off_t pos, size_t count);
-
-
-/*
- * For use on files opened with qemu_bufopen
- */
-const QEMUSizedBuffer *qemu_buf_get(QEMUFile *f);
 
 static inline void qemu_put_ubyte(QEMUFile *f, unsigned int v)
 {
@@ -196,6 +182,7 @@ int64_t qemu_file_get_rate_limit(QEMUFile *f);
 int qemu_file_get_error(QEMUFile *f);
 void qemu_file_set_error(QEMUFile *f, int ret);
 int qemu_file_shutdown(QEMUFile *f);
+QEMUFile *qemu_file_get_return_path(QEMUFile *f);
 void qemu_fflush(QEMUFile *f);
 void qemu_file_set_blocking(QEMUFile *f, bool block);