Merge remote-tracking branch 'luiz/queue/qmp' into staging
[qemu/raspi.git] / migration-fd.c
blobd2e523af743f8662e25133455a0c8ec84e3814e8
1 /*
2 * QEMU live migration via generic fd
4 * Copyright Red Hat, Inc. 2009
6 * Authors:
7 * Chris Lalancette <clalance@redhat.com>
9 * This work is licensed under the terms of the GNU GPL, version 2. See
10 * the COPYING file in the top-level directory.
12 * Contributions after 2012-01-13 are licensed under the terms of the
13 * GNU GPL, version 2 or (at your option) any later version.
16 #include "qemu-common.h"
17 #include "qemu/main-loop.h"
18 #include "qemu/sockets.h"
19 #include "migration/migration.h"
20 #include "monitor/monitor.h"
21 #include "migration/qemu-file.h"
22 #include "block/block.h"
24 //#define DEBUG_MIGRATION_FD
26 #ifdef DEBUG_MIGRATION_FD
27 #define DPRINTF(fmt, ...) \
28 do { printf("migration-fd: " fmt, ## __VA_ARGS__); } while (0)
29 #else
30 #define DPRINTF(fmt, ...) \
31 do { } while (0)
32 #endif
34 void fd_start_outgoing_migration(MigrationState *s, const char *fdname, Error **errp)
36 int fd = monitor_get_fd(cur_mon, fdname, errp);
37 if (fd == -1) {
38 return;
40 s->file = qemu_fdopen(fd, "wb");
42 migrate_fd_connect(s);
45 static void fd_accept_incoming_migration(void *opaque)
47 QEMUFile *f = opaque;
49 qemu_set_fd_handler2(qemu_get_fd(f), NULL, NULL, NULL, NULL);
50 process_incoming_migration(f);
53 void fd_start_incoming_migration(const char *infd, Error **errp)
55 int fd;
56 QEMUFile *f;
58 DPRINTF("Attempting to start an incoming migration via fd\n");
60 fd = strtol(infd, NULL, 0);
61 f = qemu_fdopen(fd, "rb");
62 if(f == NULL) {
63 error_setg_errno(errp, errno, "failed to open the source descriptor");
64 return;
67 qemu_set_fd_handler2(fd, NULL, fd_accept_incoming_migration, NULL, f);