Implement support for a "file:" uri so that a migration can be initiated
directly to a file from QEMU.
Signed-off-by: Nikolay Borisov <nbori...@suse.com>
---
migration/file.c | 23 +++++++++++++++++++++++
migration/file.h | 9 +++++++++
migration/meson.build | 1 +
migration/migration.c | 3 +++
4 files changed, 36 insertions(+)
create mode 100644 migration/file.c
create mode 100644 migration/file.h
diff --git a/migration/file.c b/migration/file.c
new file mode 100644
index 000000000000..02896a7cab99
--- /dev/null
+++ b/migration/file.c
@@ -0,0 +1,23 @@
+#include "qemu/osdep.h"
+#include "channel.h"
+#include "io/channel-file.h"
+#include "file.h"
+#include "qemu/error-report.h"
+
+
+void file_start_outgoing_migration(MigrationState *s, const char *fname, Error
**errp)
+{
+ QIOChannelFile *ioc;
+
+ ioc = qio_channel_file_new_path(fname, O_CREAT|O_TRUNC|O_WRONLY, 0660,
errp);
+ if (!ioc) {
+ error_report("Error creating a channel");
+ return;
+ }
+
+ qio_channel_set_name(QIO_CHANNEL(ioc), "migration-file-outgoing");
+ migration_channel_connect(s, QIO_CHANNEL(ioc), NULL, NULL);
+ object_unref(OBJECT(ioc));
+}
+
+
diff --git a/migration/file.h b/migration/file.h
new file mode 100644
index 000000000000..d476eb1157f9
--- /dev/null
+++ b/migration/file.h
@@ -0,0 +1,9 @@
+#ifndef QEMU_MIGRATION_FILE_H
+#define QEMU_MIGRATION_FILE_H
+
+void file_start_outgoing_migration(MigrationState *s,
+ const char *filename,
+ Error **errp);
+
+#endif
+
diff --git a/migration/meson.build b/migration/meson.build
index 690487cf1a81..30a8392701c3 100644
--- a/migration/meson.build
+++ b/migration/meson.build
@@ -17,6 +17,7 @@ softmmu_ss.add(files(
'colo.c',
'exec.c',
'fd.c',
+ 'file.c',
'global_state.c',
'migration.c',
'multifd.c',
diff --git a/migration/migration.c b/migration/migration.c
index bb8bbddfe467..8813b78b9a6b 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -20,6 +20,7 @@
#include "migration/blocker.h"
#include "exec.h"
#include "fd.h"
+#include "file.h"
#include "socket.h"
#include "sysemu/runstate.h"
#include "sysemu/sysemu.h"
@@ -2414,6 +2415,8 @@ void qmp_migrate(const char *uri, bool has_blk, bool blk,
exec_start_outgoing_migration(s, p, &local_err);
} else if (strstart(uri, "fd:", &p)) {
fd_start_outgoing_migration(s, p, &local_err);
+ } else if (strstart(uri, "file:", &p)) {
+ file_start_outgoing_migration(s, p, &local_err);
} else {
if (!(has_resume && resume)) {
yank_unregister_instance(MIGRATION_YANK_INSTANCE);
--
2.34.1
