[hurd] 02/36: daemons: make sure / is writable before setting up pflocal

[Samuel Thibault]

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sthibault pushed a commit to branch upstream
in repository hurd.

commit 4543e17766d1cc566b8f4dcbb7a4e5eb0f9a3f57
Author: Justus Winter <address@hidden>
Date:   Thu Sep 19 11:12:45 2013 +0200

    daemons: make sure / is writable before setting up pflocal
    
    runsystem.sh checks whether /servers/socket/1 exists and creates it
    using settrans -c if it does not. But at this point in the boot the
    root filesystem is normally not writable. This patch fixes this.
    
    * daemons/runsystem.sh: Make sure / is writable before attempting to
      set up pflocal.
---
 daemons/runsystem.sh |   15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/daemons/runsystem.sh b/daemons/runsystem.sh
index 4b9334e..f4f2771 100644
--- a/daemons/runsystem.sh
+++ b/daemons/runsystem.sh
@@ -55,10 +55,17 @@ function singleuser ()
 }
 
 
-# See whether pflocal is setup already, and do so if not (install case)
-
-if ! test -e /servers/socket/1 && which settrans >/dev/null ; then
-  settrans -c /servers/socket/1 /hurd/pflocal
+# See whether pflocal is set up already, and do so if not (install case)
+#
+# Normally this should be the case, but we better make sure since
+# without the pflocal server, pipe(2) does not work.
+if ! test -e /servers/socket/1 ; then
+  # The root filesystem should be read-only at this point.
+  if fsysopts / --update --writable ; then
+    settrans -c /servers/socket/1 /hurd/pflocal
+  else
+    singleuser "Failed to create /servers/socket/1."
+  fi
 fi
 
 # We expect to be started by console-run, which gives us no arguments and

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