qemu-nbd: move client handling to nbd.c

This patch sets up the fd handler in nbd.c instead of qemu-nbd.c.  It
introduces NBDClient, which wraps the arguments to nbd_trip in a single
structure, so that we can add a notifier to it.  This way, qemu-nbd can
know about disconnections.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/nbd.h b/nbd.h
index c77c2fd116..a8382f096c 100644
--- a/nbd.h
+++ b/nbd.h
@@ -76,11 +76,12 @@ int nbd_client(int fd);
 int nbd_disconnect(int fd);
 
 typedef struct NBDExport NBDExport;
+typedef struct NBDClient NBDClient;
 
 NBDExport *nbd_export_new(BlockDriverState *bs, off_t dev_offset,
                           off_t size, uint32_t nbdflags);
 void nbd_export_close(NBDExport *exp);
-int nbd_negotiate(NBDExport *exp, int csock);
-int nbd_trip(NBDExport *exp, int csock);
+NBDClient *nbd_client_new(NBDExport *exp, int csock,
+                          void (*close)(NBDClient *));
 
 #endif