Use libps and enhance [pid]/stat

* Makefile: Add libps to the $(LIBS).
* proclist.c, proclist.h: Embed the proc server port in a
  ps_context structure. (proclist_make_node): Change to prototype to
  allow for the possibility of error.  Rename to proclist_create_node to
  reflect the change and non-triviality.
* process.c, process.h: Revamp.  Use a full-blown procstat
  structure instead of just the procinfo fetched from the process
  server.  Use the additional data to complement [pid]/stat.
  (process_lookup_pid): Get a ps_context structure instead of a port to
  the process server.
* main.c (root_make_node): Convert to the new interface for
  proclist_create_node.

1 files changed, 4 insertions, 4 deletions

diff --git a/process.h b/process.h
index abdaaa3b..8c2ee636 100644
--- a/process.h
+++ b/process.h
@@ -1,8 +1,8 @@
-#include <hurd.h>
+#include <ps.h>
 
-/* Create a node for a directory representing information available at
-   the proc server PROC for the given PID.  On success, returns the
+/* Create a node for a directory representing the given PID, as published by
+   the proc server refrenced by the libps context PC.  On success, returns the
    newly created node in *NP.  */
 error_t
-process_lookup_pid (process_t proc, pid_t pid, struct node **np);
+process_lookup_pid (struct ps_context *pc, pid_t pid, struct node **np);