[PATCH hurd-dde 4/4] libmachdev: add payload-aware intrans functions

[Justus Winter]

* libmachdev/mig-mutate.h: Add mutators.
* libmachdev/mig-decls.h (begin_using_device_payload): New function.
* libmachdev/Makefile (device-MIGSFLAGS): Define MACH_PAYLOAD_TO_PORT.
---
 libmachdev/Makefile     | 1 +
 libmachdev/mig-decls.h  | 6 ++++++
 libmachdev/mig-mutate.h | 4 ++++
 3 files changed, 11 insertions(+)

diff --git a/libmachdev/Makefile b/libmachdev/Makefile
index 345c004..221e4ed 100644
--- a/libmachdev/Makefile
+++ b/libmachdev/Makefile
@@ -29,5 +29,6 @@ HURDLIBS = ports trivfs ddekit bpf
 OTHERLIBS = -lpthread
 OBJS = $(SRCS:.c=.o) $(MIGSTUBS)
 MIGSFLAGS = -imacros $(srcdir)/mig-mutate.h
+device-MIGSFLAGS="-DMACH_PAYLOAD_TO_PORT=ports_payload_get_name"
 
 include ../Makeconf
diff --git a/libmachdev/mig-decls.h b/libmachdev/mig-decls.h
index b3dc43d..8302029 100644
--- a/libmachdev/mig-decls.h
+++ b/libmachdev/mig-decls.h
@@ -34,6 +34,12 @@ begin_using_device_port (mach_port_t port)
   return ports_lookup_port (device_bucket, port, dev_class);
 }
 
+static inline struct mach_device * __attribute__ ((unused))
+begin_using_device_payload (unsigned long payload)
+{
+  return ports_lookup_payload (device_bucket, payload, dev_class);
+}
+
 static inline void __attribute__ ((unused))
 end_using_device (struct mach_device *p)
 {
diff --git a/libmachdev/mig-mutate.h b/libmachdev/mig-mutate.h
index 56c6965..902ff16 100644
--- a/libmachdev/mig-mutate.h
+++ b/libmachdev/mig-mutate.h
@@ -19,6 +19,8 @@
 
 #define NOTIFY_INTRAN                                          \
   port_info_t begin_using_port_info_port (mach_port_t)
+#define NOTIFY_INTRAN_PAYLOAD                                  \
+  port_info_t begin_using_port_info_payload
 #define NOTIFY_DESTRUCTOR                                      \
   end_using_port_info (port_info_t)
 #define NOTIFY_IMPORTS                                         \
@@ -26,6 +28,8 @@
 
 #define DEVICE_INTRAN                                          \
   mach_device_t begin_using_device_port (mach_port_t)
+#define DEVICE_INTRAN_PAYLOAD                                  \
+  mach_device_t begin_using_device_payload
 #define DEVICE_DESTRUCTOR                                      \
   end_using_device (mach_device_t)
 #define DEVICE_IMPORTS                                         \
-- 
2.1.3