#include "qemu_socket.h"
#include "migration.h"
#include "qemu-char.h"
-#include "sysemu.h"
-#include "console.h"
#include "buffered_file.h"
#include "block.h"
+#include <sys/types.h>
+#include <sys/wait.h>
//#define DEBUG_MIGRATION_EXEC
#ifdef DEBUG_MIGRATION_EXEC
-#define dprintf(fmt, ...) \
+#define DPRINTF(fmt, ...) \
do { printf("migration-exec: " fmt, ## __VA_ARGS__); } while (0)
#else
-#define dprintf(fmt, ...) \
+#define DPRINTF(fmt, ...) \
do { } while (0)
#endif
static int exec_close(FdMigrationState *s)
{
- dprintf("exec_close\n");
+ int ret = 0;
+ DPRINTF("exec_close\n");
if (s->opaque) {
- qemu_fclose(s->opaque);
+ ret = qemu_fclose(s->opaque);
s->opaque = NULL;
s->fd = -1;
+ if (ret != -1 &&
+ WIFEXITED(ret)
+ && WEXITSTATUS(ret) == 0) {
+ ret = 0;
+ } else {
+ ret = -1;
+ }
}
- return 0;
+ return ret;
}
-MigrationState *exec_start_outgoing_migration(const char *command,
- int64_t bandwidth_limit,
- int async)
+MigrationState *exec_start_outgoing_migration(Monitor *mon,
+ const char *command,
+ int64_t bandwidth_limit,
+ int detach,
+ int blk,
+ int inc)
{
FdMigrationState *s;
FILE *f;
f = popen(command, "w");
if (f == NULL) {
- dprintf("Unable to popen exec target\n");
+ DPRINTF("Unable to popen exec target\n");
goto err_after_alloc;
}
s->fd = fileno(f);
if (s->fd == -1) {
- dprintf("Unable to retrieve file descriptor for popen'd handle\n");
+ DPRINTF("Unable to retrieve file descriptor for popen'd handle\n");
goto err_after_open;
}
- if (fcntl(s->fd, F_SETFD, O_NONBLOCK) == -1) {
- dprintf("Unable to set nonblocking mode on file descriptor\n");
- goto err_after_open;
- }
+ socket_set_nonblock(s->fd);
s->opaque = qemu_popen(f, "w");
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->detach = !async;
+ s->mon = NULL;
s->bandwidth_limit = bandwidth_limit;
- if (s->detach == 1) {
- dprintf("detaching from monitor\n");
- monitor_suspend();
- s->detach = 2;
+ if (!detach) {
+ migrate_fd_monitor_suspend(s, mon);
}
migrate_fd_connect(s);
return NULL;
}
+static void exec_accept_incoming_migration(void *opaque)
+{
+ QEMUFile *f = opaque;
+
+ process_incoming_migration(f);
+ qemu_set_fd_handler2(qemu_stdio_fd(f), NULL, NULL, NULL, NULL);
+ qemu_fclose(f);
+}
+
int exec_start_incoming_migration(const char *command)
{
- int ret;
QEMUFile *f;
- dprintf("Attempting to start an incoming migration\n");
+ DPRINTF("Attempting to start an incoming migration\n");
f = qemu_popen_cmd(command, "r");
if(f == NULL) {
- dprintf("Unable to apply qemu wrapper to popen file\n");
+ DPRINTF("Unable to apply qemu wrapper to popen file\n");
return -errno;
}
- vm_stop(0); /* just in case */
- ret = qemu_loadvm_state(f);
- if (ret < 0) {
- fprintf(stderr, "load of migration failed\n");
- goto err;
- }
- qemu_announce_self();
- dprintf("successfully loaded vm state\n");
- vm_start();
- qemu_fclose(f);
- return 0;
-err:
- qemu_fclose(f);
- return -errno;
+ qemu_set_fd_handler2(qemu_stdio_fd(f), NULL,
+ exec_accept_incoming_migration, NULL, f);
+
+ return 0;
}