[hurd] 49/98: libdiskfs: improve the diskfs_demuxer function

[Samuel Thibault]

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sthibault pushed a commit to branch upstream
in repository hurd.

commit bbf408117c40f2e02b9d3e23025c01b74f5bdc09
Author: Justus Winter <address@hidden>
Date:   Fri Nov 29 13:51:19 2013 +0100

    libdiskfs: improve the diskfs_demuxer function
    
    Handle multiple request types as recommended by the Mach Server
    Writer's Guide section 4, subsection "Handling Multiple Request
    Types".  This avoids initializing the reply message in every X_server
    function.  The reply message has already been properly initialized in
    libports, so there is no need to call mig_reply_setup.
    
    Furthermore, move diskfs_exec_startup_server_routine to the end of the
    chain, as the startup related functions are only needed at system
    bootstrap time in the root filesystem.
    
    * libdiskfs/demuxer.c (diskfs_demuxer): Improve the demuxer function.
---
 libdiskfs/demuxer.c | 43 ++++++++++++++++++++++++++-----------------
 1 file changed, 26 insertions(+), 17 deletions(-)

diff --git a/libdiskfs/demuxer.c b/libdiskfs/demuxer.c
index 7425dc5..5412f26 100644
--- a/libdiskfs/demuxer.c
+++ b/libdiskfs/demuxer.c
@@ -1,5 +1,5 @@
 /* Demultiplexer for diskfs library
-   Copyright (C) 1994, 1995, 1996 Free Software Foundation, Inc.
+   Copyright (C) 1994, 1995, 1996, 2013 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
@@ -21,20 +21,29 @@ int
 diskfs_demuxer (mach_msg_header_t *inp,
                mach_msg_header_t *outp)
 {
-  int diskfs_fs_server (mach_msg_header_t *, mach_msg_header_t *);
-  int diskfs_io_server (mach_msg_header_t *, mach_msg_header_t *);
-  int diskfs_fsys_server (mach_msg_header_t *, mach_msg_header_t *);
-  int diskfs_exec_startup_server (mach_msg_header_t *, mach_msg_header_t *);
-  int diskfs_ifsock_server (mach_msg_header_t *, mach_msg_header_t *);
-  int diskfs_startup_notify_server (mach_msg_header_t *, mach_msg_header_t *);
-  
-  
-  return (diskfs_io_server (inp, outp)
-         || diskfs_fs_server (inp, outp)
-         || ports_notify_server (inp, outp)
-         || diskfs_fsys_server (inp, outp)
-         || diskfs_exec_startup_server (inp, outp)
-         || ports_interrupt_server (inp, outp)
-         || (diskfs_shortcut_ifsock ? diskfs_ifsock_server (inp, outp) : 0)
-         || diskfs_startup_notify_server (inp, outp));
+  mig_routine_t diskfs_io_server_routine (mach_msg_header_t *);
+  mig_routine_t diskfs_fs_server_routine (mach_msg_header_t *);
+  mig_routine_t ports_notify_server_routine (mach_msg_header_t *);
+  mig_routine_t diskfs_fsys_server_routine (mach_msg_header_t *);
+  mig_routine_t ports_interrupt_server_routine (mach_msg_header_t *);
+  mig_routine_t diskfs_ifsock_server_routine (mach_msg_header_t *);
+  mig_routine_t diskfs_exec_startup_server_routine (mach_msg_header_t *);
+  mig_routine_t diskfs_startup_notify_server_routine (mach_msg_header_t *);
+
+  mig_routine_t routine;
+  if ((routine = diskfs_io_server_routine (inp)) ||
+      (routine = diskfs_fs_server_routine (inp)) ||
+      (routine = ports_notify_server_routine (inp)) ||
+      (routine = diskfs_fsys_server_routine (inp)) ||
+      (routine = ports_interrupt_server_routine (inp)) ||
+      (diskfs_shortcut_ifsock ?
+       (routine = diskfs_ifsock_server_routine (inp)) : 0) ||
+      (routine = diskfs_startup_notify_server_routine (inp)) ||
+      (routine = diskfs_exec_startup_server_routine (inp)))
+    {
+      (*routine) (inp, outp);
+      return TRUE;
+    }
+  else
+    return FALSE;
 }

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