72a8192e22
This patch parses 'migrate' and 'migrate-incoming' QAPI's 'uri' string containing migration connection related information and stores them inside well defined 'MigrateAddress' struct. Fabiano fixed for "file" transport. Suggested-by: Aravind Retnakaran <aravind.retnakaran@nutanix.com> Signed-off-by: Het Gala <het.gala@nutanix.com> Signed-off-by: Fabiano Rosas <farosas@suse.de> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> Message-ID: <20231023182053.8711-4-farosas@suse.de> Message-ID: <20231023182053.8711-5-farosas@suse.de>
104 lines
2.8 KiB
C
104 lines
2.8 KiB
C
/*
|
|
* Copyright (c) 2021-2023 Oracle and/or its affiliates.
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qemu/cutils.h"
|
|
#include "qapi/error.h"
|
|
#include "channel.h"
|
|
#include "file.h"
|
|
#include "migration.h"
|
|
#include "io/channel-file.h"
|
|
#include "io/channel-util.h"
|
|
#include "trace.h"
|
|
|
|
#define OFFSET_OPTION ",offset="
|
|
|
|
/* Remove the offset option from @filespec and return it in @offsetp. */
|
|
|
|
int file_parse_offset(char *filespec, uint64_t *offsetp, Error **errp)
|
|
{
|
|
char *option = strstr(filespec, OFFSET_OPTION);
|
|
int ret;
|
|
|
|
if (option) {
|
|
*option = 0;
|
|
option += sizeof(OFFSET_OPTION) - 1;
|
|
ret = qemu_strtosz(option, NULL, offsetp);
|
|
if (ret) {
|
|
error_setg_errno(errp, -ret, "file URI has bad offset %s", option);
|
|
return -1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void file_start_outgoing_migration(MigrationState *s, const char *filespec,
|
|
Error **errp)
|
|
{
|
|
g_autofree char *filename = g_strdup(filespec);
|
|
g_autoptr(QIOChannelFile) fioc = NULL;
|
|
uint64_t offset = 0;
|
|
QIOChannel *ioc;
|
|
|
|
trace_migration_file_outgoing(filename);
|
|
|
|
if (file_parse_offset(filename, &offset, errp)) {
|
|
return;
|
|
}
|
|
|
|
fioc = qio_channel_file_new_path(filename, O_CREAT | O_WRONLY | O_TRUNC,
|
|
0600, errp);
|
|
if (!fioc) {
|
|
return;
|
|
}
|
|
|
|
ioc = QIO_CHANNEL(fioc);
|
|
if (offset && qio_channel_io_seek(ioc, offset, SEEK_SET, errp) < 0) {
|
|
return;
|
|
}
|
|
qio_channel_set_name(ioc, "migration-file-outgoing");
|
|
migration_channel_connect(s, ioc, NULL, NULL);
|
|
}
|
|
|
|
static gboolean file_accept_incoming_migration(QIOChannel *ioc,
|
|
GIOCondition condition,
|
|
gpointer opaque)
|
|
{
|
|
migration_channel_process_incoming(ioc);
|
|
object_unref(OBJECT(ioc));
|
|
return G_SOURCE_REMOVE;
|
|
}
|
|
|
|
void file_start_incoming_migration(const char *filespec, Error **errp)
|
|
{
|
|
g_autofree char *filename = g_strdup(filespec);
|
|
QIOChannelFile *fioc = NULL;
|
|
uint64_t offset = 0;
|
|
QIOChannel *ioc;
|
|
|
|
trace_migration_file_incoming(filename);
|
|
|
|
if (file_parse_offset(filename, &offset, errp)) {
|
|
return;
|
|
}
|
|
|
|
fioc = qio_channel_file_new_path(filename, O_RDONLY, 0, errp);
|
|
if (!fioc) {
|
|
return;
|
|
}
|
|
|
|
ioc = QIO_CHANNEL(fioc);
|
|
if (offset && qio_channel_io_seek(ioc, offset, SEEK_SET, errp) < 0) {
|
|
return;
|
|
}
|
|
qio_channel_set_name(QIO_CHANNEL(ioc), "migration-file-incoming");
|
|
qio_channel_add_watch_full(ioc, G_IO_IN,
|
|
file_accept_incoming_migration,
|
|
NULL, NULL,
|
|
g_main_context_get_thread_default());
|
|
}
|