* 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_socket.h"
-#include "migration.h"
-#include "qemu-char.h"
-#include "sysemu.h"
-#include "buffered_file.h"
-#include "block.h"
+#include "qemu/sockets.h"
+#include "migration/migration.h"
+#include "migration/qemu-file.h"
+#include "block/block.h"
+#include "qemu/main-loop.h"
//#define DEBUG_MIGRATION_TCP
do { } while (0)
#endif
-static int socket_errno(FdMigrationState *s)
+static void tcp_wait_for_connect(int fd, void *opaque)
{
- return socket_error();
-}
-
-static int socket_write(FdMigrationState *s, const void * buf, size_t size)
-{
- return send(s->fd, buf, size, 0);
-}
-
-static int tcp_close(FdMigrationState *s)
-{
- DPRINTF("tcp_close\n");
- if (s->fd != -1) {
- close(s->fd);
- s->fd = -1;
- }
- return 0;
-}
-
-
-static void tcp_wait_for_connect(void *opaque)
-{
- FdMigrationState *s = opaque;
- int val, ret;
- socklen_t valsize = sizeof(val);
+ MigrationState *s = opaque;
- DPRINTF("connect completed\n");
- do {
- ret = getsockopt(s->fd, SOL_SOCKET, SO_ERROR, (void *) &val, &valsize);
- } while (ret == -1 && (s->get_error(s)) == EINTR);
-
- if (ret < 0) {
+ if (fd < 0) {
+ DPRINTF("migrate connect error\n");
+ s->file = NULL;
migrate_fd_error(s);
- return;
- }
-
- qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
-
- if (val == 0)
+ } else {
+ DPRINTF("migrate connect success\n");
+ s->file = qemu_fopen_socket(fd, "wb");
migrate_fd_connect(s);
- else {
- DPRINTF("error connecting %d\n", val);
- migrate_fd_error(s);
}
}
-MigrationState *tcp_start_outgoing_migration(Monitor *mon,
- const char *host_port,
- int64_t bandwidth_limit,
- int detach,
- int blk,
- int inc)
+void tcp_start_outgoing_migration(MigrationState *s, const char *host_port, Error **errp)
{
- 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 = NULL;
- s->bandwidth_limit = bandwidth_limit;
- s->fd = qemu_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, mon);
- }
-
- 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");
- migrate_fd_error(s);
- } else if (ret >= 0)
- migrate_fd_connect(s);
-
- return &s->mig_state;
+ inet_nonblocking_connect(host_port, tcp_wait_for_connect, s, errp);
}
static void tcp_accept_incoming_migration(void *opaque)
{
struct sockaddr_in addr;
socklen_t addrlen = sizeof(addr);
- int s = (unsigned long)opaque;
+ int s = (intptr_t)opaque;
QEMUFile *f;
- int c, ret;
+ int c;
do {
c = qemu_accept(s, (struct sockaddr *)&addr, &addrlen);
} while (c == -1 && socket_error() == EINTR);
+ qemu_set_fd_handler2(s, NULL, NULL, NULL, NULL);
+ closesocket(s);
DPRINTF("accepted migration\n");
if (c == -1) {
fprintf(stderr, "could not accept migration connection\n");
- return;
+ goto out;
}
- f = qemu_fopen_socket(c);
+ f = qemu_fopen_socket(c, "rb");
if (f == NULL) {
fprintf(stderr, "could not qemu_fopen socket\n");
goto out;
}
- ret = qemu_loadvm_state(f);
- if (ret < 0) {
- fprintf(stderr, "load of migration failed\n");
- goto out_fopen;
- }
- qemu_announce_self();
- DPRINTF("successfully loaded vm state\n");
-
- if (autostart)
- vm_start();
+ process_incoming_migration(f);
+ return;
-out_fopen:
- qemu_fclose(f);
out:
- qemu_set_fd_handler2(s, NULL, NULL, NULL, NULL);
- close(s);
- close(c);
+ closesocket(c);
}
-int tcp_start_incoming_migration(const char *host_port)
+void tcp_start_incoming_migration(const char *host_port, Error **errp)
{
- struct sockaddr_in addr;
- int val;
int s;
- if (parse_host_port(&addr, host_port) < 0) {
- fprintf(stderr, "invalid host/port combination: %s\n", host_port);
- return -EINVAL;
+ s = inet_listen(host_port, NULL, 256, SOCK_STREAM, 0, errp);
+ if (s < 0) {
+ return;
}
- s = qemu_socket(PF_INET, SOCK_STREAM, 0);
- if (s == -1)
- return -socket_error();
-
- val = 1;
- setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
-
- if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) == -1)
- goto err;
-
- if (listen(s, 1) == -1)
- goto err;
-
qemu_set_fd_handler2(s, NULL, tcp_accept_incoming_migration, NULL,
- (void *)(unsigned long)s);
-
- return 0;
-
-err:
- close(s);
- return -socket_error();
+ (void *)(intptr_t)s);
}
projects / qemu.git / blobdiff