* 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 <string.h>
+
#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/error-report.h"
+#include "qemu/sockets.h"
+#include "qemu/main-loop.h"
+#include "migration/migration.h"
+#include "migration/qemu-file.h"
+#include "block/block.h"
//#define DEBUG_MIGRATION_UNIX
do { } while (0)
#endif
-static int unix_errno(FdMigrationState *s)
-{
- return errno;
-}
-
-static int unix_write(FdMigrationState *s, const void * buf, size_t size)
-{
- return write(s->fd, buf, size);
-}
-
-static int unix_close(FdMigrationState *s)
-{
- DPRINTF("unix_close\n");
- if (s->fd != -1) {
- close(s->fd);
- s->fd = -1;
- }
- return 0;
-}
-
-static void unix_wait_for_connect(void *opaque)
+static void unix_wait_for_connect(int fd, Error *err, void *opaque)
{
- FdMigrationState *s = opaque;
- int val, ret;
- socklen_t valsize = sizeof(val);
-
- DPRINTF("connect completed\n");
- do {
- ret = getsockopt(s->fd, SOL_SOCKET, SO_ERROR, (void *) &val, &valsize);
- } while (ret == -1 && (s->get_error(s)) == EINTR);
+ MigrationState *s = opaque;
- if (ret < 0) {
+ if (fd < 0) {
+ DPRINTF("migrate connect error: %s\n", error_get_pretty(err));
+ 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 *unix_start_outgoing_migration(Monitor *mon,
- const char *path,
- int64_t bandwidth_limit,
- int detach,
- int blk,
- int inc)
+void unix_start_outgoing_migration(MigrationState *s, const char *path, Error **errp)
{
- FdMigrationState *s;
- struct sockaddr_un addr;
- int ret;
-
- addr.sun_family = AF_UNIX;
- snprintf(addr.sun_path, sizeof(addr.sun_path), "%s", path);
-
- s = qemu_mallocz(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:
- qemu_free(s);
- return NULL;
+ unix_nonblocking_connect(path, unix_wait_for_connect, s, errp);
}
static void unix_accept_incoming_migration(void *opaque)
{
struct sockaddr_un addr;
socklen_t addrlen = sizeof(addr);
- int s = (unsigned long)opaque;
+ int s = (intptr_t)opaque;
QEMUFile *f;
- int c;
+ int c, err;
do {
c = qemu_accept(s, (struct sockaddr *)&addr, &addrlen);
- } while (c == -1 && socket_error() == EINTR);
+ err = errno;
+ } while (c < 0 && err == EINTR);
+ qemu_set_fd_handler2(s, NULL, NULL, NULL, NULL);
+ close(s);
DPRINTF("accepted migration\n");
- if (c == -1) {
- fprintf(stderr, "could not accept migration connection\n");
+ if (c < 0) {
+ error_report("could not accept migration connection (%s)",
+ strerror(err));
return;
}
- f = qemu_fopen_socket(c);
+ f = qemu_fopen_socket(c, "rb");
if (f == NULL) {
- fprintf(stderr, "could not qemu_fopen socket\n");
+ error_report("could not qemu_fopen socket");
goto out;
}
process_incoming_migration(f);
- qemu_fclose(f);
+ return;
+
out:
- qemu_set_fd_handler2(s, NULL, NULL, NULL, NULL);
- close(s);
close(c);
}
-int unix_start_incoming_migration(const char *path)
+void unix_start_incoming_migration(const char *path, Error **errp)
{
- struct sockaddr_un un;
- int sock;
-
- DPRINTF("Attempting to start an incoming migration\n");
-
- sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0);
- if (sock < 0) {
- fprintf(stderr, "Could not open unix socket: %s\n", strerror(errno));
- return -EINVAL;
- }
-
- memset(&un, 0, sizeof(un));
- un.sun_family = AF_UNIX;
- snprintf(un.sun_path, sizeof(un.sun_path), "%s", path);
+ int s;
- unlink(un.sun_path);
- if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) {
- fprintf(stderr, "bind(unix:%s): %s\n", un.sun_path, strerror(errno));
- goto err;
- }
- if (listen(sock, 1) < 0) {
- fprintf(stderr, "listen(unix:%s): %s\n", un.sun_path, strerror(errno));
- goto err;
+ s = unix_listen(path, NULL, 0, errp);
+ if (s < 0) {
+ return;
}
- qemu_set_fd_handler2(sock, NULL, unix_accept_incoming_migration, NULL,
- (void *)(unsigned long)sock);
-
- return 0;
-
-err:
- close(sock);
-
- return -EINVAL;
+ qemu_set_fd_handler2(s, NULL, unix_accept_incoming_migration, NULL,
+ (void *)(intptr_t)s);
}
projects / qemu.git / blobdiff