From deb2ac133799e2e5e46ba8ea9204286124cae46c Mon Sep 17 00:00:00 2001
From: Justus Winter <justus@gnupg.org>
Date: Sat, 23 Apr 2016 17:52:33 +0200
Subject: [PATCH hurd 1/3] startup: implement bits of the fs and io protocols

* startup/Makefile: Build fs and io server with default
implementations.
* startup/startup.c (demuxer): Add new protocols.
(S_file_check_access): New function.
(S_io_restrict_auth): Likewise.
---
 startup/Makefile  |  4 +++-
 startup/startup.c | 45 ++++++++++++++++++++++++++++++++++++++++-----
 2 files changed, 43 insertions(+), 6 deletions(-)

diff --git a/startup/Makefile b/startup/Makefile
index ee2ecdd5..67b0be5 100644
--- a/startup/Makefile
+++ b/startup/Makefile
@@ -21,13 +21,15 @@ makemode := server
 SRCS = startup.c
 OBJS = $(SRCS:.c=.o) \
        startupServer.o notifyServer.o startup_replyUser.o msgServer.o \
-       startup_notifyUser.o fsysServer.o
+       startup_notifyUser.o fsysServer.o fsServer.o ioServer.o
 target = startup
 HURDLIBS = shouldbeinlibc
 
 # startup does not use libports.  Disable the default payload to port
 # conversion.
 MIGSFLAGS="-DHURD_DEFAULT_PAYLOAD_TO_PORT=1"
+fsServer-CFLAGS="-DMIG_EOPNOTSUPP=EOPNOTSUPP"
+ioServer-CFLAGS="-DMIG_EOPNOTSUPP=EOPNOTSUPP"
 
 include ../Makeconf
 
diff --git a/startup/startup.c b/startup/startup.c
index 9c45f4b..05b623d 100644
--- a/startup/startup.c
+++ b/startup/startup.c
@@ -51,6 +51,7 @@
 #include <version.h>
 #include <argp.h>
 #include <pids.h>
+#include <idvec.h>
 
 #include "startup_notify_U.h"
 #include "startup_reply_U.h"
@@ -58,6 +59,8 @@
 #include "notify_S.h"
 #include "mung_msg_S.h"
 
+#include "io_S.h"
+
 /* host_reboot flags for when we crash.  */
 static int crash_flags = RB_AUTOBOOT;
 
@@ -498,18 +501,21 @@ run_for_real (char *filename, char *args, int arglen, mach_port_t ctty,
 
 /** Main program and setup **/
 
+#include "notify_S.h"
+#include "msg_S.h"
+#include "fsys_S.h"
+#include "startup_S.h"
+
 static int
 demuxer (mach_msg_header_t *inp,
 	 mach_msg_header_t *outp)
 {
-  extern int notify_server (mach_msg_header_t *, mach_msg_header_t *);
-  extern int startup_server (mach_msg_header_t *, mach_msg_header_t *);
-  extern int msg_server (mach_msg_header_t *, mach_msg_header_t *);
-  extern int fsys_server (mach_msg_header_t *, mach_msg_header_t *);
-
+  error (0, 0, "msgid %d", inp->msgh_id);
   return (notify_server (inp, outp) ||
 	  msg_server (inp, outp) ||
 	  fsys_server (inp, outp) ||
+	  fs_server (inp, outp) ||
+	  io_server (inp, outp) ||
 	  startup_server (inp, outp));
 }
 
@@ -1703,3 +1709,32 @@ S_fsys_forward (mach_port_t server, mach_port_t requestor,
 {
   return EOPNOTSUPP;
 }
+
+error_t
+S_file_check_access (mach_port_t server,
+                     int *allowed)
+{
+  if (server != startup)
+    return EOPNOTSUPP;
+  *allowed = 0;
+}
+
+error_t
+S_io_restrict_auth (mach_port_t server,
+                    mach_port_t *newport,
+                    mach_msg_type_name_t *newporttype,
+                    uid_t *uids, size_t nuids,
+                    uid_t *gids, size_t ngids)
+{
+  struct idvec user = { uids, (unsigned) nuids, (unsigned) nuids };
+
+  if (server != startup)
+    return EOPNOTSUPP;
+
+  if (! idvec_contains (&user, 0))
+    return EPERM;
+
+  *newport = server;
+  *newporttype = MACH_MSG_TYPE_COPY_SEND;
+  return 0;
+}
-- 
2.1.4