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/*
* QEMU live migration
*
* Copyright IBM, Corp. 2008
* Copyright Dell MessageOne 2008
*
* Authors:
* Anthony Liguori <aliguori@us.ibm.com>
* Charles Duffy <charles_duffy@messageone.com>
*
* This work is licensed under the terms of the GNU GPL, version 2. See
* the COPYING file in the top-level directory.
*
* Contributions after 2012-01-13 are licensed under the terms of the
* GNU GPL, version 2 or (at your option) any later version.
*/
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "qemu/sockets.h"
#include "qemu/main-loop.h"
#include "migration/migration.h"
#include "migration/qemu-file.h"
#include "block/block.h"
#include <sys/wait.h>
//#define DEBUG_MIGRATION_EXEC
#ifdef DEBUG_MIGRATION_EXEC
#define DPRINTF(fmt, ...) \
do { printf("migration-exec: " fmt, ## __VA_ARGS__); } while (0)
#else
#define DPRINTF(fmt, ...) \
do { } while (0)
#endif
void exec_start_outgoing_migration(MigrationState *s, const char *command, Error **errp)
{
s->file = qemu_popen_cmd(command, "w");
if (s->file == NULL) {
error_setg_errno(errp, errno, "failed to popen the migration target");
return;
}
migrate_fd_connect(s);
}
static void exec_accept_incoming_migration(void *opaque)
{
QEMUFile *f = opaque;
qemu_set_fd_handler(qemu_get_fd(f), NULL, NULL, NULL);
process_incoming_migration(f);
}
void exec_start_incoming_migration(const char *command, Error **errp)
{
QEMUFile *f;
DPRINTF("Attempting to start an incoming migration\n");
f = qemu_popen_cmd(command, "r");
if(f == NULL) {
error_setg_errno(errp, errno, "failed to popen the migration source");
return;
}
qemu_set_fd_handler(qemu_get_fd(f), exec_accept_incoming_migration, NULL,
f);
}
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