[Fwd: [patch #3633] Support "get the root capability" in capability server]

[Bas Wijnen]

Ok, that worked.  :-)  I'm attaching the patch here for convenience. 
This is the same patch I sent to the list some time ago, with a minor 
adjustment to make it still compile.

Thanks,
Bas

-------- Original Message --------
Subject: [patch #3633] Support "get the root capability" in capability 
server
Date: Tue, 11 Jan 2005 18:16:52 +0000
From: Bas Wijnen <address@hidden>
To: Bas Wijnen <address@hidden>, address@hidden


This is an automated notification sent by Savannah.
It relates to:
                patch #3633, project The GNU Hurd

==============================================================================
 OVERVIEW of patch #3633:
==============================================================================

URL:
  <http://savannah.gnu.org/patch/?func=detailitem&item_id=3633>

                 Summary: Support "get the root capability" in capability
server
                 Project: The GNU Hurd
            Submitted by: shevek
            Submitted on: Tue 01/11/2005 at 18:16
                Category: Hurd on L4
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
        Originator Email:
             Open/Closed: Open

    _______________________________________________________


This patch implements "get the root capability"-support in the capability
server code.



2005-01-11  Bas Wijnen  <address@hidden>



        * bucket-manage-mt.c (struct workerinfo): added member root.

        * bucket-manage-mt.c (manage_demuxer, manage_mt_worker,
hurd_cap_bucket_manage_mt): Pass root capability object to worker thread and
return it to callers when requested.





    _______________________________________________________

File Attachments:


-------------------------------------------------------
Date: Tue 01/11/2005 at 18:16  Name: root-cap.patch  Size: 2.19KB   By:
shevek
Patch for root capability support
<http://savannah.gnu.org/patch/download.php?item_id=3633&item_file_id=4025>

==============================================================================

This item URL is:
  <http://savannah.gnu.org/patch/?func=detailitem&item_id=3633>

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Index: libhurd-cap-server/bucket-manage-mt.c
===================================================================
RCS file: /cvsroot/hurd/hurd-l4/libhurd-cap-server/bucket-manage-mt.c,v
retrieving revision 1.15
diff -u -p -r1.15 bucket-manage-mt.c
--- libhurd-cap-server/bucket-manage-mt.c       2 Dec 2004 17:46:51 -0000       
1.15
+++ libhurd-cap-server/bucket-manage-mt.c       11 Jan 2005 18:08:22 -0000
@@ -74,6 +74,9 @@ struct worker_info
 
   /* The timeout for the worker thread as an L4 time period.  */
   l4_time_t timeout;
+
+  /* The root capability object */
+  hurd_cap_obj_t root;
 };
 
 
@@ -125,7 +128,8 @@ lookup_client (hurd_cap_bucket_t bucket,
    is returned, CTX->MSG must contain the reply message.  */
 static error_t
 __attribute__((always_inline))
-manage_demuxer (hurd_cap_rpc_context_t ctx, _hurd_cap_list_item_t worker)
+manage_demuxer (hurd_cap_rpc_context_t ctx, _hurd_cap_list_item_t worker,
+               hurd_cap_obj_t root)
 {
   error_t err = 0;
   hurd_cap_bucket_t bucket = ctx->bucket;
@@ -148,9 +152,17 @@ manage_demuxer (hurd_cap_rpc_context_t c
 
   if (l4_msg_label (ctx->msg) == HURD_CAP_MSG_LABEL_GET_ROOT)
     {
-      /* This is the "get the root capability" RPC.  FIXME: Needs to
-        be implemented.  */
-      return ENOSYS;
+      /* This is the "get the root capability" RPC.  */
+      hurd_cap_handle_t cap;
+
+      if (!root)
+        return ENOSYS;
+      err = hurd_cap_bucket_inject (bucket, root, ctx->from, &cap);
+      if (err)
+       return err;
+      l4_msg_clear (ctx->msg);
+      l4_msg_append_word (ctx->msg, cap);
+      return 0;
     }
 
   /* Every normal RPC must have at least one untyped word, which
@@ -616,7 +628,7 @@ manage_mt_worker (void *arg, bool async)
                  ctx.bucket = bucket;
                  ctx.from = from;
                  ctx.obj = NULL;
-                 err = manage_demuxer (&ctx, worker);
+                 err = manage_demuxer (&ctx, worker, info->root);
                }
 
              /* Post-processing.  */
@@ -932,6 +944,7 @@ hurd_cap_bucket_manage_mt (hurd_cap_buck
     : l4_time_period (UINT64_C (1000000) * global_timeout_sec);
 
   info.bucket = bucket;
+  info.root = root;
   info.manager_tid = l4_myself ();
   info.timeout = (worker_timeout_sec == 0) ? L4_NEVER
     : l4_time_period (UINT64_C (1000000) * worker_timeout_sec);

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