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+# misc -*- mode: python; coding: utf-8 -*-
+
+# misc tools for mini-dinstall
+
+# Copyright © 2004 Thomas Viehmann <tv@beamnet.de>
+
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+import os, errno, time
+
+def dup2(fd,fd2):
+ # dup2 with EBUSY retries (cf. dup2(2) and Debian bug #265513)
+ success = 0
+ tries = 0
+ while (not success):
+ try:
+ os.dup2(fd,fd2)
+ success = 1
+ except OSError, e:
+ if (e.errno != errno.EBUSY) or (tries >= 3):
+ raise
+ # wait 0-2 seconds befor next try
+ time.sleep(tries)
+ tries += 1