ssize_t migrate_fd_put_buffer(void *opaque, const void *data, size_t size) { FdMigrationState *s = opaque; ssize_t ret; do { ret = s->write(s, data, size); } while (ret == -1 && ((s->get_error(s)) == EINTR)); if (ret == -1) ret = -(s->get_error(s)); if (ret == -EAGAIN) qemu_set_fd_handler2(s->fd, NULL, NULL, migrate_fd_put_notify, s); return ret; }
MigrationState *tcp_start_outgoing_migration(const char *host_port, int64_t bandwidth_limit, int detach, int blk, int inc) { struct sockaddr_in addr; FdMigrationState *s; int ret; if (parse_host_port(&addr, host_port) < 0) return NULL; s = qemu_mallocz(sizeof(*s)); s->get_error = socket_errno; s->write = socket_write; s->close = tcp_close; s->mig_state.cancel = migrate_fd_cancel; s->mig_state.get_status = migrate_fd_get_status; s->mig_state.release = migrate_fd_release; s->mig_state.blk = blk; s->mig_state.shared = inc; s->state = MIG_STATE_ACTIVE; s->mon_resume = NULL; s->bandwidth_limit = bandwidth_limit; s->fd = socket(PF_INET, SOCK_STREAM, 0); if (s->fd == -1) { qemu_free(s); return NULL; } socket_set_nonblock(s->fd); if (!detach) migrate_fd_monitor_suspend(s); do { ret = connect(s->fd, (struct sockaddr *)&addr, sizeof(addr)); if (ret == -1) ret = -(s->get_error(s)); if (ret == -EINPROGRESS || ret == -EWOULDBLOCK) qemu_set_fd_handler2(s->fd, NULL, NULL, tcp_wait_for_connect, s); } while (ret == -EINTR); if (ret < 0 && ret != -EINPROGRESS && ret != -EWOULDBLOCK) { dprintf("connect failed\n"); close(s->fd); qemu_free(s); return NULL; } else if (ret >= 0) migrate_fd_connect(s); return &s->mig_state; }
ssize_t migrate_fd_put_buffer(void *opaque, const void *data, size_t size) { FdMigrationState *s = opaque; ssize_t ret; do { ret = s->write(s, data, size); } while (ret == -1 && ((s->get_error(s)) == EINTR)); if (ret == -1) ret = -(s->get_error(s)); if (ret == -EAGAIN) { qemu_set_fd_handler2(s->fd, NULL, NULL, migrate_fd_put_notify, s); } else if (ret < 0) { s->state = MIG_STATE_ERROR; notifier_list_notify(&migration_state_notifiers, NULL); } return ret; }
MigrationState *tcp_start_outgoing_migration(const char *host_port, int64_t bandwidth_limit, int detach) { SockAddress addr; FdMigrationState *s; int ret; if (parse_host_port(&addr, host_port) < 0) return NULL; s = g_malloc0(sizeof(*s)); s->get_error = socket_errno; s->write = socket_write; s->close = tcp_close; s->mig_state.cancel = migrate_fd_cancel; s->mig_state.get_status = migrate_fd_get_status; s->mig_state.release = migrate_fd_release; s->state = MIG_STATE_ACTIVE; s->mon_resume = NULL; s->bandwidth_limit = bandwidth_limit; s->fd = socket_create_inet(SOCKET_STREAM); if (s->fd == -1) { g_free(s); return NULL; } socket_set_nonblock(s->fd); if (!detach) migrate_fd_monitor_suspend(s); do { ret = socket_connect(s->fd, &addr); if (ret == -1) ret = -(s->get_error(s)); if (ret == -EINPROGRESS || ret == -EWOULDBLOCK || ret == -EAGAIN) qemu_set_fd_handler2(s->fd, NULL, NULL, tcp_wait_for_connect, s); } while (ret == -EINTR); if (ret < 0 && ret != -EINPROGRESS && ret != -EWOULDBLOCK && ret != -EAGAIN) { dprintf("connect failed\n"); socket_close(s->fd); g_free(s); return NULL; } else if (ret >= 0) migrate_fd_connect(s); return &s->mig_state; }
int migrate_fd_get_buffer(void *opaque, uint8_t *data, int64_t pos, size_t size) { FdMigrationState *s = opaque; int ret; ret = s->read(s, data, size); if (ret == -1) { ret = -(s->get_error(s)); } if (ret == -EAGAIN) { qemu_set_fd_handler2(s->fd, NULL, migrate_fd_get_notify, NULL, s); } return ret; }
void migrate_fd_wait_for_unfreeze(void *opaque) { FdMigrationState *s = opaque; int ret; DPRINTF("wait for unfreeze\n"); if (s->state != MIG_STATE_ACTIVE) return; do { fd_set wfds; FD_ZERO(&wfds); FD_SET(s->fd, &wfds); ret = select(s->fd + 1, NULL, &wfds, NULL, NULL); } while (ret == -1 && (s->get_error(s)) == EINTR); }
MigrationState *unix_start_outgoing_migration(Monitor *mon, const char *path, int64_t bandwidth_limit, int detach, int blk, int inc) { FdMigrationState *s; struct sockaddr_un addr; int ret; addr.sun_family = AF_UNIX; snprintf(addr.sun_path, sizeof(addr.sun_path), "%s", path); s = g_malloc0(sizeof(*s)); s->get_error = unix_errno; s->write = unix_write; s->close = unix_close; s->mig_state.cancel = migrate_fd_cancel; s->mig_state.get_status = migrate_fd_get_status; s->mig_state.release = migrate_fd_release; s->mig_state.blk = blk; s->mig_state.shared = inc; s->state = MIG_STATE_ACTIVE; s->mon = NULL; s->bandwidth_limit = bandwidth_limit; s->fd = qemu_socket(PF_UNIX, SOCK_STREAM, 0); if (s->fd < 0) { DPRINTF("Unable to open socket"); goto err_after_alloc; } socket_set_nonblock(s->fd); do { ret = connect(s->fd, (struct sockaddr *)&addr, sizeof(addr)); if (ret == -1) ret = -(s->get_error(s)); if (ret == -EINPROGRESS || ret == -EWOULDBLOCK) qemu_set_fd_handler2(s->fd, NULL, NULL, unix_wait_for_connect, s); } while (ret == -EINTR); if (ret < 0 && ret != -EINPROGRESS && ret != -EWOULDBLOCK) { DPRINTF("connect failed\n"); goto err_after_open; } if (!detach) { migrate_fd_monitor_suspend(s, mon); } if (ret >= 0) migrate_fd_connect(s); return &s->mig_state; err_after_open: close(s->fd); err_after_alloc: g_free(s); return NULL; }