[qemu.git] / migration-exec.c

/*
 * 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-common.h"
#include "qemu/sockets.h"
#include "migration/migration.h"
#include "migration/qemu-file.h"
#include "block/block.h"
#include <sys/types.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_handler2(qemu_get_fd(f), NULL, 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_handler2(qemu_get_fd(f), NULL,
			 exec_accept_incoming_migration, NULL, f);
}
Commit	Line	Data
	1	/*
	2	* QEMU live migration
	3	*
	4	* Copyright IBM, Corp. 2008
	5	* Copyright Dell MessageOne 2008
	6	*
	7	* Authors:
	8	* Anthony Liguori <aliguori@us.ibm.com>
	9	* Charles Duffy <charles_duffy@messageone.com>
	10	*
	11	* This work is licensed under the terms of the GNU GPL, version 2. See
	12	* the COPYING file in the top-level directory.
	13	*
	14	* Contributions after 2012-01-13 are licensed under the terms of the
	15	* GNU GPL, version 2 or (at your option) any later version.
	16	*/
	17
	18	#include "qemu-common.h"
	19	#include "qemu/sockets.h"
	20	#include "migration/migration.h"
	21	#include "migration/qemu-file.h"
	22	#include "block/block.h"
	23	#include <sys/types.h>
	24	#include <sys/wait.h>
	25
	26	//#define DEBUG_MIGRATION_EXEC
	27
	28	#ifdef DEBUG_MIGRATION_EXEC
	29	#define DPRINTF(fmt, ...) \
	30	do { printf("migration-exec: " fmt, ## __VA_ARGS__); } while (0)
	31	#else
	32	#define DPRINTF(fmt, ...) \
	33	do { } while (0)
	34	#endif
	35
	36	void exec_start_outgoing_migration(MigrationState s, const char command, Error **errp)
	37	{
	38	s->file = qemu_popen_cmd(command, "w");
	39	if (s->file == NULL) {
	40	error_setg_errno(errp, errno, "failed to popen the migration target");
	41	return;
	42	}
	43
	44	migrate_fd_connect(s);
	45	}
	46
	47	static void exec_accept_incoming_migration(void *opaque)
	48	{
	49	QEMUFile *f = opaque;
	50
	51	qemu_set_fd_handler2(qemu_get_fd(f), NULL, NULL, NULL, NULL);
	52	process_incoming_migration(f);
	53	}
	54
	55	void exec_start_incoming_migration(const char command, Error *errp)
	56	{
	57	QEMUFile *f;
	58
	59	DPRINTF("Attempting to start an incoming migration\n");
	60	f = qemu_popen_cmd(command, "r");
	61	if(f == NULL) {
	62	error_setg_errno(errp, errno, "failed to popen the migration source");
	63	return;
	64	}
	65
	66	qemu_set_fd_handler2(qemu_get_fd(f), NULL,
	67	exec_accept_incoming_migration, NULL, f);
	68	}