Bug 8294 - dbus-launch doesn't exit if dbus-daemon exits/is killed
Summary: dbus-launch doesn't exit if dbus-daemon exits/is killed
Status: RESOLVED DUPLICATE of bug 69877
Alias: None
Product: dbus
Classification: Unclassified
Component: core (show other bugs)
Version: unspecified
Hardware: All All
: high normal
Assignee: Thiago Macieira
QA Contact: John (J5) Palmieri
URL:
Whiteboard:
Keywords:
: 28556 (view as bug list)
Depends on:
Blocks:
 
Reported: 2006-09-16 02:28 UTC by Thiago Macieira
Modified: 2013-12-10 13:47 UTC (History)
3 users (show)

See Also:
i915 platform:
i915 features:

Attachments

Description Thiago Macieira 2006-09-16 02:28:08 UTC 
If dbus-launch is started with --exit-with-session, it babysits dbus-daemon. 
If you kill dbus-launch, it kills dbus-daemon. But if you kill dbus-daemon, 
dbus-launch doesn't realise it (since it doesn't get a SIGCHLD) and doesn't 
exit.

A simple solution is to keep open a pipe between the two processes. When 
dbus-daemon exits, the pipe will generate a SIGPIPE and dbus-launch can exit 
upon select(2).
Comment 1 Simon McVittie 2011-01-19 10:47:49 UTC 
Slightly better summary, stolen from Bug #28556
Comment 2 Simon McVittie 2011-01-19 10:47:56 UTC 
*** Bug 28556 has been marked as a duplicate of this bug. ***
Comment 3 Simon McVittie 2011-07-14 09:42:30 UTC 
This is complicated by the fact that dbus-daemon daemonizes, closing all extra file descriptors...

One nice way that dbus-launch could detect a dbus-daemon crash would be to connect to dbus-daemon itself, using D-Bus. I hear that's a reasonable IPC mechanism these days :-)
Comment 4 Chengwei Yang 2013-12-10 13:47:40 UTC 

*** This bug has been marked as a duplicate of bug 69877 ***

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