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Backports of patch from systemd git to stable distributions
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David Herrmann 44eb1adda9 sd-bus: make introspection data non-recursive 
Currently, our introspection data looks like this:

        <node>
         <interface name="org.freedesktop.DBus.Peer">
           ...
         </interface>
         <interface name="org.freedesktop.DBus.Introspectable">
           ...
         </interface>
         <interface name="org.freedesktop.DBus.Properties">
           ...
         </interface>
         <node name="org"/>
         <node name="org/freedesktop"/>
         <node name="org/freedesktop/login1"/>
         <node name="org/freedesktop/login1/user"/>
         <node name="org/freedesktop/login1/user/self"/>
         <node name="org/freedesktop/login1/user/_1000"/>
         <node name="org/freedesktop/login1/seat"/>
         <node name="org/freedesktop/login1/seat/self"/>
         <node name="org/freedesktop/login1/seat/seat0"/>
         <node name="org/freedesktop/login1/session"/>
         <node name="org/freedesktop/login1/session/self"/>
         <node name="org/freedesktop/login1/session/c1"/>
        </node>

(ordered alphabetically for better visibility)

This is grossly incorrect. The spec says that we're allowed to return
non-directed children, however, it does not allow us to return data
recursively in multiple parents. If we return "org", then we must not
return anything else that starts with "org/".

It is unclear, whether we can include child-nodes as a tree. Moreover, it
is usually not what the caller wants. Hence, this patch changes sd-bus to
never return introspection data recursively. Instead, only a single
child-layer is returned.

This patch relies on enumerators to never return hierarchies. If someone
registers an enumerator via sd_bus_add_enumerator, they better register
sub-enumerators if they support *TRUE* hierarchies. Each enumerator is
treated as a single layer and not filtered.
Enumerators are still allowed to return nested data. However, that data
is still required to be a single hierarchy. For instance, returning
"/org/foo" and "/com/bar" is fine, but including "/com" or "/org" in that
dataset is not.
This should be the default for enumerators and I see no reason to filter
in sd-bus. Moreover, filtering that data-set would require to sort the
strv by path and then do prefix-filtering. This is O(n log n), which
would be fine, but still better to avoid.

Fixes #664.
2015-09-05 19:43:29 +02:00
catalog l10n: Add Belarusian translation 2015-06-15 00:13:43 +03:00
docs docs: add .gitignore 2015-07-06 17:47:38 +02:00
factory/etc factory: remove broken pam_limits 2014-07-30 15:21:54 +02:00
hwdb hwdb: Add Thinkpad T550 / W550s to 70-pointingstick.hwdb 2015-09-04 16:01:41 +02:00
m4 build-sys: Look for gcc-* binutils wrappers only if we're using GCC 2015-09-01 13:27:42 +02:00
man sd-login: add new sd_pid_get_cgroup() API 2015-09-05 14:56:23 +02:00
network networkd: emit DNS/NTP/Timezone info via DHCP server by default 2015-08-27 16:47:26 +02:00
po po: update Polish translation 2015-08-29 20:33:02 +02:00
rules UML: Fix block device setup 2015-08-09 18:07:55 +02:00
shell-completion shell-completion: update systemctl bash completion 2015-09-04 23:04:10 +03:00
src sd-bus: make introspection data non-recursive 2015-09-05 19:43:29 +02:00
sysctl.d sysctl: add some hints how to override settings 2015-02-26 19:07:38 -05:00
system-preset preset: enable machines.target by default 2014-12-29 17:36:57 +01:00
sysusers.d turn kdbus support into a runtime option 2015-06-17 18:01:49 +02:00
test test: udev - Signal that test was skipped when running as non-root 2015-08-30 22:10:30 -07:00
tmpfiles.d tmpfiles: don't recursively descend into journal directories in /var 2015-07-09 18:46:01 -03:00
tools terminal: drop unfinished code 2015-07-27 20:15:34 +02:00
units bus-proxy: increase NOFILE limit 2015-09-04 11:13:32 +02:00
xorg login: support user-bus on dbus1 2015-08-31 18:12:37 +02:00
.dir-locals.el Keep emacs configuration in one configuration file. 2011-03-08 01:53:46 +01:00
.gitattributes git: indicate that tabs are never OK in the systemd tree 2013-10-30 02:25:38 +01:00
.gitignore Merge branch 'hostnamectl-dot-v2' 2015-08-05 21:02:41 -04:00
.mailmap prepare NEWS 2014-02-18 02:51:47 +01:00
.travis.yml remove gudev and gtk-doc 2015-06-03 00:22:53 +02:00
.vimrc vimrc: disable -fdiagnostics-color output 2013-10-20 04:29:39 +02:00
.ycm_extra_conf.py ycm: update flag blacklist 2014-06-04 15:41:10 -04:00
autogen.sh terminal: drop unfinished code 2015-07-27 20:15:34 +02:00
CODING_STYLE CODING_STYLE: say that "for (;;)" is better than "while (1)" 2015-07-31 20:00:07 +02:00
configure.ac build-sys: Look for gcc-* binutils wrappers only if we're using GCC 2015-09-01 13:27:42 +02:00
DISTRO_PORTING build-sys: warn if people don't change the default NTP servers when building systemd 2015-07-11 14:24:29 -03:00
LICENSE.GPL2 relicense to LGPLv2.1 (with exceptions) 2012-04-12 00:24:39 +02:00
LICENSE.LGPL2.1 licence: remove references to old FSF address 2012-12-17 11:41:31 +01:00
Makefile-man.am sd-login: add new sd_pid_get_cgroup() API 2015-09-05 14:56:23 +02:00
Makefile.am Merge pull request #1055 from poettering/dhcp-updates 2015-08-27 21:38:36 +02:00
NEWS NEWS: add entries for v226 2015-09-05 11:09:44 +02:00
README README: drop reference to Endocode 2015-08-16 21:06:42 +02:00
README.md README.md: add Coverity scan status badge 2015-06-08 13:26:54 +02:00
TODO TODO: update networkd section 2015-09-05 18:29:14 +02:00

README.md

systemd - System and Service Manager

Build Status
Coverity Scan Status

Details

  • General information about systemd can be found in the systemd Wiki
  • Information about build requirements are provided in the README file