mirror of
https://gitlab.com/qemu-project/qemu
synced 2024-09-06 18:05:37 +00:00
![Alex Bligh](/assets/img/avatar_default.png)
include/qemu/timer.h has no need to include main-loop.h and doing so causes an issue for the next patch. Unfortunately various files assume including timers.h will pull in main-loop.h. Untangle this mess. Signed-off-by: Alex Bligh <alex@alex.org.uk> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
99 lines
2.3 KiB
C
99 lines
2.3 KiB
C
/*
|
|
* QEMU live migration via Unix Domain Sockets
|
|
*
|
|
* Copyright Red Hat, Inc. 2009
|
|
*
|
|
* Authors:
|
|
* Chris Lalancette <clalance@redhat.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 "qemu/main-loop.h"
|
|
#include "migration/migration.h"
|
|
#include "migration/qemu-file.h"
|
|
#include "block/block.h"
|
|
|
|
//#define DEBUG_MIGRATION_UNIX
|
|
|
|
#ifdef DEBUG_MIGRATION_UNIX
|
|
#define DPRINTF(fmt, ...) \
|
|
do { printf("migration-unix: " fmt, ## __VA_ARGS__); } while (0)
|
|
#else
|
|
#define DPRINTF(fmt, ...) \
|
|
do { } while (0)
|
|
#endif
|
|
|
|
static void unix_wait_for_connect(int fd, void *opaque)
|
|
{
|
|
MigrationState *s = opaque;
|
|
|
|
if (fd < 0) {
|
|
DPRINTF("migrate connect error\n");
|
|
s->file = NULL;
|
|
migrate_fd_error(s);
|
|
} else {
|
|
DPRINTF("migrate connect success\n");
|
|
s->file = qemu_fopen_socket(fd, "wb");
|
|
migrate_fd_connect(s);
|
|
}
|
|
}
|
|
|
|
void unix_start_outgoing_migration(MigrationState *s, const char *path, Error **errp)
|
|
{
|
|
unix_nonblocking_connect(path, unix_wait_for_connect, s, errp);
|
|
}
|
|
|
|
static void unix_accept_incoming_migration(void *opaque)
|
|
{
|
|
struct sockaddr_un addr;
|
|
socklen_t addrlen = sizeof(addr);
|
|
int s = (intptr_t)opaque;
|
|
QEMUFile *f;
|
|
int c;
|
|
|
|
do {
|
|
c = qemu_accept(s, (struct sockaddr *)&addr, &addrlen);
|
|
} while (c == -1 && errno == EINTR);
|
|
qemu_set_fd_handler2(s, NULL, NULL, NULL, NULL);
|
|
close(s);
|
|
|
|
DPRINTF("accepted migration\n");
|
|
|
|
if (c == -1) {
|
|
fprintf(stderr, "could not accept migration connection\n");
|
|
goto out;
|
|
}
|
|
|
|
f = qemu_fopen_socket(c, "rb");
|
|
if (f == NULL) {
|
|
fprintf(stderr, "could not qemu_fopen socket\n");
|
|
goto out;
|
|
}
|
|
|
|
process_incoming_migration(f);
|
|
return;
|
|
|
|
out:
|
|
close(c);
|
|
}
|
|
|
|
void unix_start_incoming_migration(const char *path, Error **errp)
|
|
{
|
|
int s;
|
|
|
|
s = unix_listen(path, NULL, 0, errp);
|
|
if (s < 0) {
|
|
return;
|
|
}
|
|
|
|
qemu_set_fd_handler2(s, NULL, unix_accept_incoming_migration, NULL,
|
|
(void *)(intptr_t)s);
|
|
}
|