D-BUS support

["Marco d'Itri" <md@Linux.IT>]

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I'm attaching a small patch which fixes a build error when dbus support
is enabled.

BTW, I noticed that when dbus support is enabled udev becomes much
slower (is this a serialization side effect of the dbus daemon?):

# time /etc/init.d/udev start
Creating initial udev device nodes...done.

real	0m32.795s
user	0m0.314s
sys	0m0.376s
#

I can see with ps that there are a big number of processes waiting to
complete, and I verified with strace that they are waiting for a reply
from the dbus daemon, e.g.:

root@wonderland:/USR3/src/P/udev/udev-0.014# strace -v -p 14583
Process 14583 attached - interrupt to quit
select(4, [3], [], [3], NULL)           = 1 (in [3])
read(3, "OK\r\n", 2048)                 = 4
select(4, [], [3], [3], NULL)           = 1 (out [3])
write(3, "BEGIN\r\n", 7)                = 7
writev(3, [{"l\1\0\0x\0\0\0\0\0\0\0\1\0\0\0\1o\0\0\25\0\0\0/org/fre"..., 120}, {"", 0}], 2) = 120
gettimeofday({1074981742, 670060}, NULL) = 0
select(4, [3], [], [3], {15, 0})        = 1 (in [3], left {0, 98000})
read(3, 0x805c250, 2048)                = -1 ECONNRESET (Connection reset by peer)
close(3)                                = 0
gettimeofday({1074981757, 578538}, NULL) = 0
open("/udev/.udev.tdb", O_RDWR|O_CREAT, 0644) = 3
[...]

Looks like it's even timing out from time to time:

root@wonderland:/USR3/src/P/udev/udev-0.014# dpkg -i ../udev_0.014-1_i386.deb
(Lettura del database ... 98030 file e directory attualmente installati.)
Preparativi per il rimpiazzo di udev 0.014-1 (usando ../udev_0.014-1_i386.deb) ...
Spacchetto il rimpiazzo di udev ...
Configuro udev (0.014-1) ...
Installo la nuova versione del file di configurazione /etc/init.d/udev ...
Restarting system message bus: dbus-1.
Creating initial udev device nodes...cannot acquire org.kernel.udev service, error org.freedesktop.DBus.Error.NoReply: Message did not receive a reply'done.

root@wonderland:/USR3/src/P/udev/udev-0.014#


-- 
ciao, |
Marco | [4290 st4MxE3BJ1VvA]

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diff -ruN udev-014.orig/udev_dbus.c udev-014/udev_dbus.c
--- udev-014.orig/udev_dbus.c	2003-12-29 20:28:21.000000000 +0100
+++ udev-014/udev_dbus.c	2004-01-24 22:43:25.000000000 +0100
@@ -12,6 +12,7 @@
 #include "udev.h"
 #include "udev_version.h"
 #include "udev_dbus.h"
+#include "logging.h"
 
 
 /** variable for the connection the to system message bus or #NULL