gentoo-overlay/media-sound/edna/files/edna-0.6-daemon.patch

--- edna.py.orig	2007-01-27 18:49:16.000000000 +0000
+++ edna.py	2007-01-27 18:47:19.000000000 +0000
@@ -36,7 +36,9 @@
 import string
 import os
 import cgi
+import ctypes
 import urllib
+import pwd
 import socket
 import re
 import stat
@@ -1149,7 +1151,7 @@
       print '  if config-file is not specified, then edna.conf is used'
       sys.exit(0)
 
-def daemonize(stdin='/dev/null', stdout='/dev/null', stderr='/dev/null',pname=''):
+def daemonize(stdin='/dev/null', stdout='/dev/null', stderr='/dev/null', pname='', uid = None):
     '''This forks the current process into a daemon.
     The stdin, stdout, and stderr arguments are file names that
     will be opened and be used to replace the standard file descriptors
@@ -1159,6 +1161,11 @@
     if it shares a file with stdout then interleaved output
     may not appear in the order that you expect.
     '''
+    # Rename process in /proc/<pid>/stat from python to edna
+    # (helps start-stop-daemon find us)
+    libc = ctypes.CDLL('/lib/libc.so.6')
+    libc.prctl(15, 'edna\0', 0, 0, 0)
+    
     # Do first fork.
     try: 
         pid = os.fork() 
@@ -1186,6 +1193,8 @@
         sys.stderr.write("fork #2 failed: (%d) %s\n" % (e.errno, e.strerror)    )
         sys.exit(1)
     # Now I am a daemon!
+    # If specified change the process owner
+    if uid: os.setuid(uid)
     # Redirect standard file descriptors.
     si = open(stdin, 'r')
     so = open(stdout, 'a+')
@@ -1198,9 +1207,16 @@
 if __name__ == '__main__':
   fname = 'edna.conf'
   daemon_mode=0
+  uid = os.getuid()
+  pidfile = '/var/run/edna.pid'
   for a in sys.argv[1:]:
     if a == "--daemon":
       daemon_mode=1
+    elif a.startswith("--user"):
+      uname = a.split("=")[1].strip()
+      uid = pwd.getpwnam(uname)[2]
+    elif a.startswith("--pidfile"):
+      pidfile = a.split("=")[1].strip()
     elif a == "--help" or a == "-h" or string.find(a, '--')==0:
       usage()
     else:
@@ -1211,6 +1227,6 @@
     raise SystemExit
 
   if daemon_mode:
-    daemonize('/dev/null', '/var/log/edna.log', '/var/log/edna.log', '/var/run/edna.pid')
+    daemonize(uid = uid, pname = pidfile)
 
   run_server(fname)