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- /*
- * QEMU live migration via generic fd
- *
- * 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/main-loop.h"
- #include "qemu/sockets.h"
- #include "migration/migration.h"
- #include "monitor/monitor.h"
- #include "migration/qemu-file.h"
- #include "block/block.h"
- //#define DEBUG_MIGRATION_FD
- #ifdef DEBUG_MIGRATION_FD
- #define DPRINTF(fmt, ...) \
- do { printf("migration-fd: " fmt, ## __VA_ARGS__); } while (0)
- #else
- #define DPRINTF(fmt, ...) \
- do { } while (0)
- #endif
- void fd_start_outgoing_migration(MigrationState *s, const char *fdname, Error **errp)
- {
- int fd = monitor_get_fd(cur_mon, fdname, errp);
- if (fd == -1) {
- return;
- }
- s->file = qemu_fdopen(fd, "wb");
- migrate_fd_connect(s);
- }
- static void fd_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 fd_start_incoming_migration(const char *infd, Error **errp)
- {
- int fd;
- QEMUFile *f;
- DPRINTF("Attempting to start an incoming migration via fd\n");
- fd = strtol(infd, NULL, 0);
- f = qemu_fdopen(fd, "rb");
- if(f == NULL) {
- error_setg_errno(errp, errno, "failed to open the source descriptor");
- return;
- }
- qemu_set_fd_handler2(fd, NULL, fd_accept_incoming_migration, NULL, f);
- }
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