1 files changed, 7 insertions, 23 deletions

diff --git a/com32/sysdump/backend.h b/com32/sysdump/backend.h
index 0be80c63..21a9ff83 100644
--- a/com32/sysdump/backend.h
+++ b/com32/sysdump/backend.h
@@ -15,41 +15,26 @@ struct backend {
     const char *helpmsg;
     int minargs;
 
-    unsigned int blocksize;
-    unsigned int flags;
-
     size_t dbytes;
     size_t zbytes;
+    const char **argv;
 
-    int (*open)(struct backend *, const char *argv[], size_t len);
-    int (*write)(struct backend *, const char *buf, size_t len);
+    int (*write)(struct backend *);
 
     z_stream zstream;
     char *outbuf;
-
-    union {
-	struct {
-	    uint32_t my_ip;
-	    uint32_t srv_ip;
-	    uint16_t my_port;
-	    uint16_t srv_port;
-	    uint16_t seq;
-	} tftp;
-	struct {
-	    struct serial_if serial;
-	    uint16_t seq;
-	} ymodem;
-    };
+    size_t alloc;
 };
 
 /* zout.c */
-int init_data(struct backend *be, const char *argv[], size_t len);
-int write_data(struct backend *be, const void *buf, size_t len, bool flush);
+int init_data(struct backend *be, const char *argv[]);
+int write_data(struct backend *be, const void *buf, size_t len);
+int flush_data(struct backend *be);
 
 /* cpio.c */
 int cpio_hdr(struct backend *be, uint32_t mode, size_t datalen,
 	     const char *filename);
-int cpio_init(struct backend *be, const char *argv[], size_t len);
+int cpio_init(struct backend *be, const char *argv[]);
 int cpio_mkdir(struct backend *be, const char *filename);
 int cpio_writefile(struct backend *be, const char *filename,
 		   const void *data, size_t len);
@@ -63,6 +48,5 @@ struct backend *get_backend(const char *name);
 /* backends */
 extern struct backend be_tftp;
 extern struct backend be_ymodem;
-extern struct backend be_null;
 
 #endif /* BACKEND_H */