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D-Bus 1.11.8 (UNRELEASED)
==

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Build-time configuration:

 The new --enable-debug configure option provides an easy way to
  enable debug symbols, disable optimization and/or enable profiling.

 The --enable-compile-warnings configure option can be used to control
  compiler warnings.

 The --disable-compiler-optimisations configure option is no longer
  supported. Use --enable-debug=yes or CFLAGS=-O0 instead.

Enhancements:

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 D-Bus Specification version 0.30
  · Define the jargon term "activation" more clearly
  · Define the jargon term "auto-starting", which is one form of activation
  · Document the optional SystemdService key in service files
  · Use versioned interface and bus names in most examples
  (fd.o #98671; Simon McVittie)

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 Fix and enable a lot of compiler warnings to improve future code
  quality. This might incidentally also fix some environment variable
  accesses on OS X.
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  (fd.o #97357, fd.o #98192, fd.o #98195, fd.o #98658;
  Thomas Zimmermann, Simon McVittie)

Fixes:

 Work around an undesired effect of the fix for CVE-2014-3637
  (fd.o #80559), in which processes that frequently send fds, such as
  logind during a flood of new PAM sessions, can get disconnected for
  continuously having at least one fd "in flight" for too long;
  dbus-daemon interprets that as a potential denial of service attack.
  The workaround is to disable that check for uid 0 process such as
  logind, with a message in the system log. The bug remains open while
  we look for a more general solution.
  (fd.o #95263, LP#1591411; Simon McVittie)
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D-Bus 1.11.6 (2016-10-10)
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==

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The darkly whimsical release.

Security fixes:

 Do not treat ActivationFailure message received from root-owned systemd
  name as a format string. In principle this is a security vulnerability,
  but we do not believe it is exploitable in practice, because only
  privileged processes can own the org.freedesktop.systemd1 bus name, and
  systemd does not appear to send activation failures that contain "%".

  Please note that this probably *was* exploitable in dbus versions
  older than 1.6.30, 1.8.16 and 1.9.10 due to a missing check which at
  the time was only thought to be a denial of service vulnerability
  (CVE-2015-0245). If you are still running one of those versions,
  patch or upgrade immediately.

  (fd.o #98157, Simon McVittie)

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Enhancements:

 D-Bus Specification version 0.29
  · Recommend not using '/' for object paths (fd.o #37095, Philip Withnall)
  · Allow <annotation> in <arg> elements (fd.o #86162, Philip Withnall)

 Log to syslog when we exceed various anti-DoS limits, and add test
  coverage for them (fd.o #86442, Simon McVittie)

 Improve syslog handling so that _dbus_warn() and similar warnings
  go to syslog, add dbus-daemon --syslog|--nosyslog|--syslog-only options,
  and log to syslog (instead of /dev/null) when dbus-daemon is started by
  dbus-launch. (fd.o #97009, Simon McVittie)

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 Install introspect.dtd and busconfig.dtd to ${datadir}/xml/dbus-1
  (fd.o #89011, Philip Withnall)

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 When logging messages about service activation, mention which peer
  requested the activation (fd.o #68212, Philip Withnall)

 On Linux, mention the LSM label (if available) whenever we print
  debug information about a peer (fd.o #68212, Philip Withnall)

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Other fixes:

 Harden dbus-daemon against malicious or incorrect ActivationFailure
  messages by rejecting them if they do not come from a privileged
  process, or if systemd activation is not enabled
  (fd.o #98157, Simon McVittie)
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 Avoid undefined behaviour when setting reply serial number without going
  via union DBusBasicValue (fd.o #98035, Marc Mutz)

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 Fix CMake build for Unix platforms that do not have -lrt, such as Android,
  or that do need -lsocket, such as QNX (fd.o #94096, Ralf Habacker)

 autogen.sh: fail cleanly if autoconf fails (Simon McVittie)
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D-Bus 1.11.4 (2016-08-15)
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==

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The copper pickaxe release.

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Dependencies:

 Building from git (but not from tarballs) now requires
  macros from the GNU Autoconf Archive, for example the autoconf-archive
  package in Debian or Fedora derivatives.

Build-time configuration:

 The option to enable coverage instrumentation has changed from
  --enable-compiler-coverage to --enable-code-coverage.

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Enhancements:

 D-Bus Specification version 0.28
  · Clarify some details of serialization (fd.o #93382, Philip Withnall)

 Increase listen() backlog of AF_UNIX sockets to the maximum possible,
  minimizing failed connections under heavy load
  (fd.o #95264, Lennart Poettering)

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 Add a new dbus-launch --exit-with-x11 option (fd.o #39197, Simon McVittie)

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 Use the same regression tests for subprocess starting on Unix and Windows
  (fd.o #95191, Ralf Habacker)

 Print timestamps and thread IDs in verbose messages
  (fd.o #95191, Ralf Habacker)

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 On Unix, unify the various places that reopen stdin, stdout and/or stderr
  pointing to /dev/null (fd.o #97008, Simon McVittie)

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 Use AX_CODE_COVERAGE instead of our own COMPILER_COVERAGE
  (fd.o #88922, Thomas Zimmermann)

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Fixes:

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 On Windows, fix a memory leak in replacing the installation prefix
  (fd.o #95191, Ralf Habacker)

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 On Linux, when dbus-daemon is run with reduced susceptibility to the
  OOM killer (typically via systemd), do not let child processes inherit
  that setting (fd.o #32851; Kimmo Hämäläinen, WaLyong Cho)

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 On Unix, make dbus-launch and dbus-daemon --fork work as intended
  even if a parent process incorrectly starts them with stdin, stdout
  and/or stderr closed (fd.o #97008, Simon McVittie)

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 Output valid shell syntax in ~/.dbus/session-bus/ if the bus address
  contains a semicolon (fd.o #94746, Thiago Macieira)

 Fix memory leaks and thread safety in subprocess starting on Windows
  (fd.o #95191, Ralf Habacker)

 Stop test-dbus-daemon incorrectly failing on platforms that cannot
  discover the process ID of clients (fd.o #96653, Руслан Ижбулатов)

 In tests that exercise correct handling of crashing D-Bus services,
  suppress Windows crash handler (fd.o #95155; Yiyang Fei, Ralf Habacker)
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 Explicitly check for stdint.h (Ioan-Adrian Ratiu)

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 In tests, add an invalid DBusAuthState to avoid undefined behaviour
  in some test cases (fd.o #93909, Nick Lewycky)

 Add assertions to reassure a static analysis tool
  (fd.o #93210, Deepika Aggarwal)

 Be explicit about enum comparison when loading XML
  (fd.o #93205, Deepika Aggarwal)

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 update-activation-environment: produce better diagnostics on error
  (fd.o #96653, Simon McVittie)

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 Avoid various compiler warnings with gcc 6
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  (fd.o #97282; Thomas Zimmermann, Simon McVittie)

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 On Unix when configured to use the system log, report as "dbus-daemon",
  not as "dbus" (fd.o #97009, Simon McVittie)

 During unit tests, reduce the amount we write to the system log
  (fd.o #97009, Simon McVittie)

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D-Bus 1.11.2 (2016-03-07)
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==

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The pneumatic drill vs. Iron Maiden release.

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Fixes:

 Enable "large file support" on systems where it exists: dbus-daemon
  is not expected to open large files, but it might need to stat files
  that happen to have large inode numbers (fd.o #93545, Hongxu Jia)

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 Eliminate padding inside DBusMessageIter on 64-bit platforms,
  which might result in a pedantic C compiler not copying the entire contents
  of a DBusMessageIter; statically assert that this is not an ABI change
  in practice (fd.o #94136, Simon McVittie)

 Document dbus-test-tool echo --sleep-ms=N instead of incorrect --sleep=N
  (fd.o #94244, Dmitri Iouchtchenko)

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 Correctly report test failures in C tests from run-test.sh
  (fd.o #93379; amit tewari, Simon McVittie)

 When tests are enabled, run all the marshal-validate tests, not just
  the even-numbered ones (fd.o #93908, Nick Lewycky)

 Correct the expected error from one marshal-validate test, which was
  previously not run due to the above bug (fd.o #93908, Simon McVittie)
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 Fix compilation under CMake when embedded tests are disabled
  (fd.o #94094, eric.hyer)

Internal changes:

 Fix all -Wpointer-sign (signed/unsigned mismatch) warnings, and enable the
  warning (fd.o #93069; Ralf Habacker, Simon McVittie)

 When building with CMake, use the same gcc/clang warnings as under Autotools,
  or MSVC warnings that are broadly similar (fd.o #93069, Ralf Habacker)

 test/name-test: make C tests produce TAP output and run them directly, not
  via run-test.sh (fd.o #92899, Simon McVittie)

 Under CMake when cross-compiling for Windows on Unix, run the tests
  under Wine even if binfmt_misc support is not available
  (fd.o #88966, Ralf Habacker)

 The DBUS_USE_TEST_BINARY environment variable is no longer used by builds with
  embedded tests; DBUS_TEST_DBUS_LAUNCH replaces it (fd.o #92899, Simon McVittie)

 Factor out some functions that will be needed in future for a Windows
  implementation of dbus-run-session (fd.o #92899, Ralf Habacker)

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D-Bus 1.11.0 (2015-12-02)
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==

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The peppermint deer release.

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Dependencies:

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 On non-Windows platforms, dbus now requires an <inttypes.h> that defines
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  C99 constants such as PRId64 and PRIu64.

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Enhancements:

 D-Bus Specification version 0.27
  · Specify that services should not reply if NO_REPLY_EXPECTED was used
    (fd.o #75749, Lars Uebernickel)

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 Add a script to do continuous-integration builds, and metadata to run it
  on travis-ci.org. To use this, clone the dbus git repository on GitHub
  and set it up with travis-ci.org; the only special setting needed is
  "only build branches with a .travis.yml". (fd.o #93194, Simon McVittie)

 If dbus-daemon is run with --systemd-activation, do not require
  org.freedesktop.systemd1.service to exist (fd.o #93194, Simon McVittie)

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Fixes:

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 Re-order dbus-daemon startup so that on SELinux systems, the thread
  that reads AVC notifications retains the ability to write to the
  audit log (fd.o #92832, Laurent Bigonville)

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 Print 64-bit integers on non-GNU Unix platforms (fd.o #92043, Natanael Copa)

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 When using the Monitoring interface, match messages' destinations
  (fd.o #92074, Simon McVittie)

• On Linux with systemd, stop installing a reference to the obsolete
  dbus.target, and enable dbus.socket statically (fd.o #78412, #92402;
  Simon McVittie)

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• On Windows, when including configuration files with <include> or
  <includedir>, apply the same relocation as for the Exec paths
  in .service files (fd.o #92028, Simon McVittie)

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• Add support for backtraces on Windows (fd.o #92721, Ralf Habacker)

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• Fix many -Wpointer-sign warnings (fd.o #93069, Ralf Habacker)
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D-Bus 1.10.6 (2015-12-01)
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==

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The “marzipan beetles” release.

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Fixes:

• On Unix when running tests as root, don't assert that root and
  the dbus-daemon user can still call UpdateActivationEnvironment;
  assert that those privileged users can call BecomeMonitor instead
  (fd.o #93036, Simon McVittie)

 On Windows, fix a memory leak in the autolaunch transport (fd.o #92899,
  Simon McVittie)

 On Windows Autotools builds, don't run tests that rely on
  dbus-run-session and other Unix-specifics (fd.o #92899, Simon McVittie)

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D-Bus 1.10.4 (2015-11-17)
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==

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The “Frostburn Canyon” release.

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Enhancements:

• GetConnectionCredentials, GetConnectionUnixUser and
  GetConnectionUnixProcessID with argument "org.freedesktop.DBus"
  will now return details of the dbus-daemon itself. This is required
  to be able to call SetEnvironment on systemd.
  (fd.o #92857, Jan Alexander Steffens)

Fixes:

• Make UpdateActivationEnvironment always fail with AccessDenied on the
  system bus. Previously, it was possible to configure it so root could
  call it, but the environment variables were not actually used,
  because the launch helper would discard them.
  (fd.o #92857, Jan Alexander Steffens)

• On Unix with --systemd-activation on a user bus, make
  UpdateActivationEnvironment pass on its arguments to systemd's
  SetEnvironment method, solving inconsistency between the environments
  used for traditional activation and systemd user-service activation.
  (fd.o #92857, Jan Alexander Steffens)

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 On Windows, don't crash if <syslog/> or --syslog is used
  (fd.o #92538, Ralf Habacker)

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• On Windows, fix a memory leak when setting a DBusError from a Windows
  error (fd.o #92721, Ralf Habacker)

• On Windows, don't go into infinite recursion if we abort the process
  with backtraces enabled (fd.o #92721, Ralf Habacker)

 Fix various failing tests, variously on Windows and cross-platform:
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  · don't test system.conf features (users, groups) that only make sense
    on the system bus, which is not supported on Windows
  · don't call _dbus_warn() when we skip a test, since it is fatal
  · fix computation of expected <standard_session_servicedirs/>
  · when running TAP tests, translate newlines to Unix format, fixing
    cross-compiled tests under Wine on Linux
  · don't stress-test refcounting under Wine, where it's really slow
  · stop assuming that a message looped-back to the test will be received
    immediately
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  · skip some system bus tests on Windows since they make no sense there
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  (fd.o #92538, fd.o #92721; Ralf Habacker, Simon McVittie)
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D-Bus 1.10.2 (2015-10-26)
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==

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The worst pies in London release.

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Fixes:

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 Correct error handling for activation: if there are multiple attempts
  to activate the same service and it fails immediately, the first attempt
  would get the correct reply, but the rest would time out. We now send
  the same error reply to each attempt. (fd.o #92200, Simon McVittie)

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 If BecomeMonitor is called with a syntactically invalid match rule,
  don't crash with an assertion failure, fixing a regression in 1.9.10.
  This was not exploitable as a denial of service, because the check
  for a privileged user is done first. (fd.o #92298, Simon McVittie)

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• On Linux with --enable-user-session, add the bus address to the
  environment of systemd services for better backwards compatibility
  (fd.o #92612, Jan Alexander Steffens)

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• On Windows, fix the logic for replacing the installation prefix
  in service files' Exec lines (fd.o #83539; Milan Crha, Simon McVittie)
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 On Windows, if installed in the conventional layout with ${prefix}/etc
  and ${prefix}/share, use relative paths between bus configuration files
  to allow the tree to be relocated (fd.o #92028, Simon McVittie)

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 Make more of the regression tests pass in Windows builds (fd.o #92538,
  Simon McVittie)

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D-Bus 1.10.0 (2015-08-25)
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==

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The 0x20 release.

This is a new stable branch, recommended for use in OS distributions.

Fixes since 1.9.20:

 distribute test/tap-test.sh.in, even if the tarball was built without
  tests enabled (fd.o #91684, Simon McVittie)
 work around a fd leak in libcap-ng < 0.7.7 (fd.o #91684, Simon McVittie)

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Summary of major changes since 1.8.0:

 The basic setup for the well-known system and session buses is
  now done in read-only files in ${datadir} (normally /usr/share).
  See the NEWS entry for 1.9.18 for details.

 AppArmor integration has been merged, with features similar to the
  pre-existing SELinux integration. It is mostly compatible with the
  patches previously shipped by Ubuntu, with one significant change:
  Ubuntu's GetConnectionAppArmorSecurityContext method has been superseded
  by GetConnectionCredentials and was not included.

• The --enable-user-session configure option can be enabled
  by OS integrators intending to use systemd to provide a session bus
  per user (in effect, treating all concurrent graphical and non-graphical
  login sessions as one large session).

• The new listenable address mode "unix:runtime=yes" listens on
  $XDG_RUNTIME_DIR/bus, the same AF_UNIX socket used by the systemd
  user session. libdbus and "dbus-launch --autolaunch" will connect to
  this address by default. GLib ≥ 2.45.3 and sd-bus ≥ 209 have a
  matching default.

• All executables are now dynamically linked to libdbus-1.
  Previously, some executables, most notably dbus-daemon, were statically
  linked to a specially-compiled variant of libdbus. This results in
  various private functions in the _dbus namespace being exposed by the
  shared library. These are not API, and must not be used outside
  the dbus source tree.

• On platforms with ELF symbol versioning, all public symbols
  are versioned LIBDBUS_1_3.

New bus APIs:

• org.freedesktop.DBus.GetConnectionCredentials returns
  LinuxSecurityLabel where supported
• org.freedesktop.DBus.Monitoring interface (privileged)
  · BecomeMonitor method supersedes match rules with eavesdrop=true,
    which are now deprecated
• org.freedesktop.DBus.Stats interface (semi-privileged)
  · now enabled by default
  · new GetAllMatchRules method
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• org.freedesktop.DBus.Verbose interface (not normally compiled)
  · toggles the effect of DBUS_VERBOSE
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New executables:

• dbus-test-tool
• dbus-update-activation-environment

New optional dependencies:

• The systemd: pseudo-transport requires libsystemd or libsd-daemon
• Complete documentation requires Ducktype and yelp-tools
• Full test coverage requires GLib 2.36 and PyGI
• AppArmor integration requires libapparmor and optionally libaudit

Dependencies removed:

• dbus-glib

D-Bus 1.9.20 (2015-08-06)
==

The “Remember Tomorrow” release.

This is a release-candidate for D-Bus 1.10.0. OS distribution vendors
should test it.

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Fixes:

• Don't second-guess what the ABI of poll() is, allowing it to be used
  on Integrity RTOS and other unusual platforms (fd.o #90314;
  Rolland Dudemaine, Simon McVittie)

 Don't duplicate audit subsystem integration if AppArmor and SELinux are
  both enabled (fd.o #89225, Simon McVittie)

• Log audit events for AppArmor/SELinux policy violations whenever
  we have CAP_AUDIT_WRITE, even if not the system bus
  (fd.o #83856, Laurent Bigonville)
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D-Bus 1.9.18 (2015-07-21)
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==

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The “Pirate Elite” release.

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Configuration changes:

• The basic setup for the well-known system and session buses is now done
  in read-only files in ${datadir}, moving a step closer to systems
  that can operate with an empty /etc directory. In increasing order
  of precedence:

  · ${datadir}/dbus-1/s*.conf now perform the basic setup such as setting
    the default message policies.
  · ${sysconfdir}/dbus-1/s*.conf are now optional. By default
    dbus still installs a trivial version of each, for documentation
    purposes; putting configuration directives in these files is deprecated.
  · ${datadir}/dbus-1/s*.d/ are now available for third-party software
    to install "drop-in" configuration snippets (any packages
    using those directories should explicitly depend on at least this
    version of dbus).
  · ${sysconfdir}/dbus-1/s*.d/ are also still available for sysadmins
    or third-party software to install "drop-in" configuration snippets
  · ${sysconfdir}/dbus-1/s*-local.conf are still available for sysadmins'
    overrides

  ${datadir} is normally /usr/share, ${sysconfdir} is normally /etc,
  and "s*" refers to either system or session as appropriate.

  (fd.o #89280, Dimitri John Ledkov)
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Fixes:

 Fix a memory leak when GetConnectionCredentials() succeeds
  (fd.o #91008, Jacek Bukarewicz)
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 Ensure that dbus-monitor does not reply to messages intended for others,
  resulting in its own disconnection (fd.o #90952, Simon McVittie)
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==

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The titanium barns release.

Dependencies:

 Automake 1.13 is now required when compiling from git or modifying
  the build system.

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Security hardening:

 On Unix platforms, change the default configuration for the session bus
  to only allow EXTERNAL authentication (secure kernel-mediated
  credentials-passing), as was already done for the system bus.

  This avoids falling back to DBUS_COOKIE_SHA1, which relies on strongly
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  unpredictable pseudo-random numbers.
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  If you are using D-Bus over the (unencrypted!) tcp: or nonce-tcp: transport,
  in conjunction with DBUS_COOKIE_SHA1 and a shared home directory using
  NFS or similar, you will need to reconfigure the session bus to accept
  DBUS_COOKIE_SHA1 by commenting out the <auth> element. This configuration
  is not recommended.

  (fd.o #90414, Simon McVittie)

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 When asked for random numbers for DBUS_COOKIE_SHA1, the nonce-tcp:
  transport, UUIDs or any other reason, fail if we cannot obtain entropy
  (from /dev/urandom or CryptGenRandom()) or an out-of-memory condition
  occurs, instead of silently falling back to low-entropy pseudorandom
  numbers from rand(). (fd.o #90414; Simon McVittie, Ralf Habacker)

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Enhancements:

 Add dbus_message_iter_get_element_count()
  (fd.o #30350; Christian Dywan, Simon McVittie)

 Introduce new internal DBusSocket and DBusPollable types so we can
  stop treating the Windows SOCKET type as if it was int. DBusSocket
  is specifically a socket, cross-platform. DBusPollable is whatever
  _dbus_poll() can act on, i.e. a fd on Unix or a SOCKET on Windows.
  (fd.o #89444; Ralf Habacker, Simon McVittie)

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 All regression tests now output TAP <https://testanything.org/>
  (fd.o #89846, Simon McVittie)

 Internal APIs consistently use signed values for timestamps
  (fd.o #18494, Peter McCurdy)

 Improve diagnostics when UpdateActivationEnvironment calls are rejected
  (fd.o #88812, Simon McVittie)

 Clean up a lot of compiler warnings
  (fd.o #17289, fd.o #89284; Ralf Habacker, Simon McVittie)

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Fixes:

 Add locking to DBusCounter's reference count and notify function
  (fd.o #89297, Adrian Szyndela)

• Ensure that DBusTransport's reference count is protected by the
  corresponding DBusConnection's lock (fd.o #90312, Adrian Szyndela)

• Correctly release DBusServer mutex before early-return if we run out
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  of memory while copying authentication mechanisms (fd.o #90021,
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  Ralf Habacker)

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• Make dbus-test-tool and dbus-update-activation-environment portable
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  to Windows (fd.o #90089, Ralf Habacker)

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• Correctly initialize all fields of DBusTypeReader (fd.o #90021;
  Ralf Habacker, Simon McVittie)
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• Fix some missing \n in verbose (debug log) messages (fd.o #90004,
  Ralf Habacker)

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• Clean up some memory and fd leaks in test code and tools
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  (fd.o #90021, Ralf Habacker)
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• Fix a NULL dereference if the dbus-daemon cannot read a configuration
  directory for a reason that is not ENOENT (fd.o #90021, Ralf Habacker)

• CMake generates a versioned shared library even if the revision is 0,
  as it usually is on the development branch. (fd.o #89450, Ralf Habacker)

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D-Bus 1.9.14 (2015-03-02)
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==

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The “don't stand in the poison cloud release.

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Dependencies:

 dbus-daemon and dbus-daemon-launch-helper now require libdbus. They
  were previously linked to a static version of libdbus.

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 The tests no longer require dbus-glib in order to exercise the libdbus
  shared library; they are always linked to libdbus now.

Build-time configuration:

 The new --enable-user-session option, off by default, can be enabled
  by OS integrators intending to use systemd to provide a session bus
  per user (in effect, treating all concurrent graphical and non-graphical
  login sessions as one large session)

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Enhancements:

 All executables are now linked dynamically to libdbus.
  (fd.o #83115; Bertrand SIMONNET, Simon McVittie, Ralf Habacker)

 On platforms that support them (GNU libc and possibly others),
  libdbus now has versioned symbols for its public API.
  All public symbols (visible in the header files) are currently
  versioned as LIBDBUS_1_3; private symbols starting with _dbus or
  dbus_internal have a version that changes with each release, and
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  must not be used by applications. (also fd.o #83115)

 New listenable address mode "unix:runtime=yes" which listens on
  a real filesystem (non-abstract) socket $XDG_RUNTIME_DIR/bus
  (fd.o #61303; Colin Walters, Alexander Larsson, Simon McVittie)

 Add optional systemd units for a per-user bus listening on
  $XDG_RUNTIME_DIR/bus (fd.o #61301; Simon McVittie, Colin Walters)

 On Unix platforms, both libdbus and "dbus-launch --autolaunch"
  default to connecting to $XDG_RUNTIME_DIR/bus if it is a socket
  (also fd.o #61301)

 New dbus-update-activation-environment tool uploads environment
  variables to "dbus-daemon --session" and optionally "systemd --user",
  primarily as a way to keep the per-user bus compatible with
  distributions' existing X11 login scripts (also fd.o #61301)

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• <includedir/> elements in dbus-daemon configuration are now silently
  ignored if the directory does not exist. (fd.o #89280, Dimitri John Ledkov)

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• Add microsecond-resolution timestamps to the default output of
  dbus-monitor and dbus-send (fd.o #88896; Ralf Habacker, Simon McVittie)
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Fixes:

• Fix a race condition in the 'monitor' test introduced in 1.9.10
  (fd.o #89222, Simon McVittie)

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D-Bus 1.9.12 (2015-02-19)
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==

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The “monster lasagna” release.

Dependencies:

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• Ducktype and yelp-tools are now required to build complete documentation
  (they are optional for normal builds).
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Enhancements:

• D-Bus Specification version 0.26
  · GetConnectionCredentials can return LinuxSecurityLabel or WindowsSID
  · document the BecomeMonitor method

• On Linux, add LinuxSecurityLabel to GetConnectionCredentials
  (fd.o #89041; Tyler Hicks, Simon McVittie)

• On Linux, add support for AppArmor mediation of message sending and
  receiving and name ownership (paralleling existing SELinux mediation
  support), and eavesdropping (a new check, currently AppArmor-specific)
  (fd.o #75113; John Johansen, Tyler Hicks, Simon McVittie)

• In dbus-send and dbus-monitor, pretty-print \0-terminated bytestrings
  that have printable ASCII contents; we previously only did this for
  unterminated bytestrings (fd.o #89109, Simon McVittie)

• Add a guide to designing good D-Bus APIs (fd.o #88994, Philip Withnall)

• On Windows, add WindowsSID to GetConnectionCredentials
  (fd.o #54445, Ralf Habacker)

• Improve clarity of dbus-monitor --profile output and add more columns
  (fd.o #89165, Ralf Habacker)

• Add a man page for dbus-test-tool, and build it under CMake as well
  as Autotools (fd.o#89086, Simon McVittie)

• If dbus-daemon was compiled with --enable-verbose, add a D-Bus API
  to control it at runtime, overriding the DBUS_VERBOSE environment variable
  (fd.o #88896, Ralf Habacker)

Fixes:

• Reduce the number of file descriptors used in the fd-passing test,
  avoiding failure under the default Linux fd limit, and automatically
  skip it if the rlimit is too small (fd.o #88998, Simon McVittie)
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D-Bus 1.9.10 (2015-02-09)
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==

717
The “sad cyborgs” release.
718

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Security fixes merged from 1.8.16:
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• Do not allow non-uid-0 processes to send forged ActivationFailure
  messages. On Linux systems with systemd activation, this would
  allow a local denial of service: unprivileged processes could
  flood the bus with these forged messages, winning the race with
  the actual service activation and causing an error reply
  to be sent back when service auto-activation was requested.
  This does not prevent the real service from being started,
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  so the attack only works while the real service is not running.
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  (CVE-2015-0245, fd.o #88811; Simon McVittie)

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Enhancements:

• The new Monitoring interface in the dbus-daemon lets dbus-monitor and
  similar tools receive messages without altering the security properties
  of the system bus, by calling the new BecomeMonitor method on a
  private connection. This bypasses the normal <allow> and <deny> rules
  entirely, so to preserve normal message-privacy assumptions, only root
  is allowed to do this on the system bus. Restricted environments,
  such as Linux with LSMs, should lock down access to the Monitoring
  interface. (fd.o #46787, Simon McVittie)

• dbus-monitor uses BecomeMonitor to capture more traffic, if the
  dbus-daemon supports it and access permissions allow it.
  It still supports the previous approach ("eavesdropping" match rules)
  for compatibility with older bus daemons. (fd.o #46787, Simon)

• dbus-monitor can now log the message stream as binary data for later
  analysis, with either no extra framing beyond the normal D-Bus headers,
  or libpcap-compatible framing treating each D-Bus message
  as a captured packet. (fd.o #46787, Simon)

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Other fixes:
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• Fix some CMake build regressions (fd.o #88964, Ralf Habacker)

• On Unix, forcibly terminate regression tests after 60 seconds to
  prevent them from blocking continuous integration frameworks
  (fd.o #46787, Simon)
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D-Bus 1.9.8 (2015-02-03)
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==

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The “all the types of precipitation” release.

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Dependencies:

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• full test coverage now requires GLib 2.36
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• full test coverage now requires PyGI (PyGObject 3,
  "import gi.repository.GObject") instead of the
  obsolete PyGObject 2 ("import gobject")

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Enhancements:

• add GLib-style "installed tests" (fd.o #88810, Simon McVittie)

• better regression test coverage, including systemd activation
  (fd.o #57952, #88810; Simon McVittie)

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Fixes:

• fatal errors correctly make the dbus-daemon exit even if <syslog/> is
  turned off (fd.o #88808, Simon McVittie)

• TCP sockets on Windows no longer fail to listen approximately 1 time
  in 256, caused by a logic error that should have always made it fail but
  was mitigated by incorrect endianness for the port number
  (fd.o #87999, Ralf Habacker)

• fix some Windows build failures (fd.o #88009, #88010; Ralf Habacker)

• on Windows, allow up to 8K connections to the dbus-daemon instead of the
  previous 64, completing a previous fix which only worked under
  Autotools (fd.o #71297, Ralf Habacker)

• on Windows, if the IP family is unspecified only use IPv4,
  to mitigate IPv6 not working correctly (fd.o #87999, Ralf Habacker)

• fix some unlikely memory leaks on OOM (fd.o #88087, Simon McVittie)

• lcov code coverage analysis works again (fd.o #88808, Simon McVittie)

• fix an unused function error with --disable-embedded-tests (fd.o #87837,
  Thiago Macieira)
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D-Bus 1.9.6 (2015-01-05)
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==

808
The “I do have a bread knife” release.
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Security hardening:

• Do not allow calls to UpdateActivationEnvironment from uids other than
  the uid of the dbus-daemon. If a system service installs unsafe
  security policy rules that allow arbitrary method calls
  (such as CVE-2014-8148) then this prevents memory consumption and
  possible privilege escalation via UpdateActivationEnvironment.

  We believe that in practice, privilege escalation here is avoided
  by dbus-daemon-launch-helper sanitizing its environment; but
  it seems better to be safe.

• Do not allow calls to UpdateActivationEnvironment or the Stats interface
  on object paths other than /org/freedesktop/DBus. Some system services
  install unsafe security policy rules that allow arbitrary method calls
  to any destination, method and interface with a specified object path;
  while less bad than allowing arbitrary method calls, these security
  policies are still harmful, since dbus-daemon normally offers the
  same API on all object paths and other system services might behave
  similarly.

Other fixes:

• Add missing initialization so GetExtendedTcpTable doesn't crash on
  Windows Vista SP0 (fd.o #77008, Илья А. Ткаченко)
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D-Bus 1.9.4 (2014-11-24)
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==

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The extra-sturdy caramel release.

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Fixes:

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 Partially revert the CVE-2014-3639 patch by increasing the default
  authentication timeout on the system bus from 5 seconds back to 30
  seconds, since this has been reported to cause boot regressions for
  some users, mostly with parallel boot (systemd) on slower hardware.

  On fast systems where local users are considered particularly hostile,
  administrators can return to the 5 second timeout (or any other value
  in milliseconds) by saving this as /etc/dbus-1/system-local.conf:

  <busconfig>
    <limit name="auth_timeout">5000</limit>
  </busconfig>

  (fd.o #86431, Simon McVittie)

 Add a message in syslog/the Journal when the auth_timeout is exceeded
  (fd.o #86431, Simon McVittie)

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 Send back an AccessDenied error if the addressed recipient is not allowed
  to receive a message (and in builds with assertions enabled, don't
  assert under the same conditions). (fd.o #86194, Jacek Bukarewicz)
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D-Bus 1.9.2 (2014-11-10)
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==

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The “structurally unsound flapjack” release.

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Security fixes:

• Increase dbus-daemon's RLIMIT_NOFILE rlimit to 65536
  so that CVE-2014-3636 part A cannot exhaust the system bus'
  file descriptors, completing the incomplete fix in 1.8.8.
  (CVE-2014-7824, fd.o #85105; Simon McVittie, Alban Crequy)
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Enhancements:

879
• D-Bus Specification version 0.25
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  · new value 'const' for EmitsChangedSignal annotation
    (fd.o #72958, Lennart Poettering)
  · new ALLOW_INTERACTIVE_AUTHORIZATION flag, for PolicyKit and similar
    (fd.o #83449; Lennart Poettering, Simon McVittie)
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  · annotate table of types with reserved/basic/container, and for
    basic types, fixed/string-like
  · clarify arbitrary limits by quoting them in mebibytes
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• New API: add accessors for the ALLOW_INTERACTIVE_AUTHORIZATION flag
  (fd.o #83449, Simon McVittie)
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• Add dbus-test-tool, a D-Bus swiss army knife with multiple subcommands,
  useful for debugging and performance testing:
  · dbus-test-tool spam: send repeated messages
  · dbus-test-tool echo: send an empty reply for all method calls
  · dbus-test-tool black-hole: do not reply to method calls
  (fd.o #34140; Alban Crequy, Simon McVittie, Will Thompson)

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• Add support for process ID in credentials-passing on NetBSD
  (fd.o #69702, Patrick Welche)

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• Add an example script to find potentially undesired match rules
  (fd.o #84598, Alban Crequy)

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• Document the central assumption that makes our use of credentials-passing
  secure (fd.o #83499, Simon McVittie)

• Replace the dbus-glib section of the tutorial with a GDBus recommendation,
  and add some links to GDBus and QtDBus documentation (fd.o #25140,
  Simon McVittie)

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Fixes:

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• Use a less confusing NoReply message when disconnected with a reply pending
  (fd.o #76112, Simon McVittie)

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• Make the .pc file relocatable by letting pkg-config do all variable
  expansion itself (fd.o #75858, Руслан Ижбулатов)

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• Fix a build failure on platforms with kqueue, which regressed in 1.9.0
  (fd.o #85563, Patrick Welche)

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• Consistently save errno after socket calls (fd.o #83625, Simon McVittie)

• In dbus-spawn, when the grandchild process exits due to a failed exec(),
  do not lose the exec() errno (fd.o #24821, Simon McVittie)

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• Do not fail the tests if a parent process has leaked non-close-on-exec
  file descriptors to us (fd.o #73689, fd.o #83899; Simon McVittie)

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• Do not fail the tests on Unix platforms with incomplete
  credentials-passing support, but do fail if we can't pass credentials
  on a platform where it is known to work: Linux, FreeBSD, OpenBSD, NetBSD
  (fd.o #69702, Simon McVittie)

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 Detect accept4, dirfd, inotify_init1, pipe2, and Unix fd passing
  when building with cmake, and expand test coverage there
  (fd.o #73689; Ralf Habacker, Simon McVittie)

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D-Bus 1.9.0 (2014-10-01)
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==

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The tiered cheeses release.

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Requirements:

 Support for the systemd: (LISTEN_FDS) pseudo-transport on Linux now
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  requires either the libsystemd or libsd-daemon shared library, dropping the
  embedded convenience copy of sd-daemon (fd.o #71818, Simon)
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Build-time configuration changes:

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 The Stats interface is now enabled by default, and locked-down to
  root-only on the system bus. Configure with --disable-stats
  to disable it altogether on memory- or disk-constrained systems,
  or see ${docdir}/examples/ to open it up to non-root users on the
  system bus or restrict access on the session bus.
  (fd.o #80759; Simon McVittie, Alban Crequy)

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 The CMake build system now builds the same shared library name as Autotools
  on at least Linux and Windows:
  - on Linux (and perhaps other Unix platforms), it previously built
    libdbus-1.so, but now builds libdbus-1.so.3.* with development
    symlink libdbus-1.so and SONAME/symlink libdbus-1.so.3
  - on Windows, it previously built either libdbus-1.dll (release) or
    libdbus-1d.dll (debug), but now builds libdbus-1-3.dll, copied to
    libdbus-1.dll for compatibility with older applications.
  (fd.o #74117, Ralf Habacker)

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Enhancements:

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 D-Bus Specification version 0.24
  · document how to quote match rules (fd.o #24307, Simon McVittie)
  · explicitly say that most message types never expect a reply
    regardles of whether they have NO_REPLY_EXPECTED
    (fd.o #75749, Simon McVittie)

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 on Unix platforms, disable Nagle's algorithm on TCP connections to improve
  initial latency (fd.o #75544, Matt Hoosier)

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• use backtrace() if it is in -lexecinfo instead of libc, as on NetBSD
  (fd.o #69702, Patrick Welche)

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• in dbus-monitor, print more information about file descriptors
  (fd.o #80603, Alban Crequy)

• do not install system bus configuration if built for Windows
  (fd.o #83583; Ralf Habacker, Simon McVittie)

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• Add GetAllMatchRules to the Stats interface (fd.o #24307, Alban Crequy)

• Add a regression test for file descriptor passing (fd.o #83622,
  Simon McVittie)

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Fixes:

• fix an incorrect error message if a Unix socket path is too long
  (fd.o #73887, Antoine Jacoutot)

• in an MSYS/Cygwin environment, pass Unix-style filenames to xmlto,
  fixing documentation generation (fd.o #75860, Руслан Ижбулатов)

• in Unix with X11, avoid giving dbus-launch a misleading argv[0]
  in ps(1) (fd.o #69716, Chengwei Yang)

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• avoid calling poll() with timeout < -1, which is considered invalid
  on FreeBSD and NetBSD (fd.o #78480, Jaap Boender)

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• be portable to BSD-derived platforms where O_CLOEXEC is unavailable in libc
  (like Mac OS X 10.6), or available in libc but unsupported by the kernel
  (fd.o #77032; rmvsxop, OBATA Akio, Patrick Welche)

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• Fix include path for test/internal/*.c with cmake (Ralf Habacker)

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• Documentation improvements
  (fd.o #80795, #84313; Thomas Haller, Sebastian Rasmussen)
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• in dbus-monitor, do not leak file descriptors that we have monitored
  (fd.o #80603, Alban Crequy)
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• Set the close-on-exec flag for the inotify file descriptor, even
  if built with CMake or older libc (fd.o #73689, Simon McVittie)

• Remove some LGPL code from the Windows dbus-daemon
  (fd.o #57272, Ralf Habacker)

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D-Bus 1.8.8 (2014-09-16)
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==

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The "smashy smashy egg man" release.

Security fixes:

• Do not accept an extra fd in the padding of a cmsg message, which
  could lead to a 4-byte heap buffer overrun.
  (CVE-2014-3635, fd.o #83622; Simon McVittie)

• Reduce default for maximum Unix file descriptors passed per message
  from 1024 to 16, preventing a uid with the default maximum number of
  connections from exhausting the system bus' file descriptors under
  Linux's default rlimit. Distributors or system administrators with a
  more restrictive fd limit may wish to reduce these limits further.

  Additionally, on Linux this prevents a second denial of service
  in which the dbus-daemon can be made to exceed the maximum number
  of fds per sendmsg() and disconnect the process that would have
  received them.
  (CVE-2014-3636, fd.o #82820; Alban Crequy)

• Disconnect connections that still have a fd pending unmarshalling after
  a new configurable limit, pending_fd_timeout (defaulting to 150 seconds),
  removing the possibility of creating an abusive connection that cannot be
  disconnected by setting up a circular reference to a connection's
  file descriptor.
  (CVE-2014-3637, fd.o #80559; Alban Crequy)

 Reduce default for maximum pending replies per connection from 8192 to 128,
  mitigating an algorithmic complexity denial-of-service attack
  (CVE-2014-3638, fd.o #81053; Alban Crequy)

 Reduce default for authentication timeout on the system bus from
  30 seconds to 5 seconds, avoiding denial of service by using up
  all unauthenticated connection slots; and when all unauthenticated
  connection slots are used up, make new connection attempts block
  instead of disconnecting them.
  (CVE-2014-3639, fd.o #80919; Alban Crequy)

Other fixes:
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 Check for libsystemd from systemd >= 209, falling back to
  the older separate libraries if not found (Umut Tezduyar Lindskog,
  Simon McVittie)

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 On Linux, use prctl() to disable core dumps from a test executable
  that deliberately raises SIGSEGV to test dbus-daemon's handling
  of that condition (fd.o #83772, Simon McVittie)

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• Fix compilation with --enable-stats (fd.o #81043, Gentoo #507232;
  Alban Crequy)
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• Improve documentation for running tests on Windows (fd.o #41252,
  Ralf Habacker)

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D-Bus 1.8.6 (2014-06-02)
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==

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Security fixes:

• On Linux ≥ 2.6.37-rc4, if sendmsg() fails with ETOOMANYREFS, silently drop
  the message. This prevents an attack in which a malicious client can
  make dbus-daemon disconnect a system service, which is a local
  denial of service.
  (fd.o #80163, CVE-2014-3532; Alban Crequy)

• Track remaining Unix file descriptors correctly when more than one
  message in quick succession contains fds. This prevents another attack
  in which a malicious client can make dbus-daemon disconnect a system
  service.
  (fd.o #79694, fd.o #80469, CVE-2014-3533; Alejandro Martínez Suárez,
  Simon McVittie, Alban Crequy)

Other fixes:
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• When dbus-launch --exit-with-session starts a dbus-daemon but then cannot
  attach to a session, kill the dbus-daemon as intended
  (fd.o #74698, Роман Донченко)
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D-Bus 1.8.4 (2014-06-10)
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==

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Security fix:

• Alban Crequy at Collabora Ltd. discovered and fixed a denial-of-service
  flaw in dbus-daemon, part of the reference implementation of D-Bus.
  Additionally, in highly unusual environments the same flaw could lead to
  a side channel between processes that should not be able to communicate.
  (CVE-2014-3477, fd.o #78979)

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D-Bus 1.8.2 (2014-04-30)
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==

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The “nobody wants red” release.

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Enhancements:

• in the CMake build system, add some hints for Linux users cross-compiling
  Windows D-Bus binaries to be able to run tests under Wine
  (fd.o #41252, Ralf Habacker)

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• add Documentation key to dbus.service (fd.o #77447, Cameron Norman)

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Fixes:

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• in "dbus-uuidgen --ensure", try to copy systemd's /etc/machine-id
  to /var/lib/dbus/machine-id instead of generating an entirely new ID
  (fd.o #77941, Simon McVittie)

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 if dbus-launch receives an X error very quickly, do not kill
  unrelated processes (fd.o #74698, Роман Донченко)

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 on Windows, allow up to 8K connections to the dbus-daemon, instead of the
  previous 64 (fd.o #71297; Cristian Onet, Ralf Habacker)
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 cope with \r\n newlines in regression tests, since on Windows,
  dbus-daemon.exe uses text mode (fd.o #75863, Руслан Ижбулатов)
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D-Bus 1.8.0 (2014-01-20)
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==

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The Wolverine distrusts my printer release.

This starts a new stable branch. The 1.6.x branch is now considered to be
outdated, and will only receive fixes for serious bugs such as security
flaws. The 1.4.x and 1.2.x branches no longer have upstream support and
are unlikely to get any more releases, but if distributors still need to
support them, please share security patches via upstream.

Summary of changes since 1.6.x:

 libdbus always behaves as if dbus_threads_init_default() had been called
  (thread-safety by default)
 new dbus-run-session tool, replacing certain misuses of dbus-launch
 dbus-monitor can talk to outdated versions of dbus-daemon again
 new org.freedesktop.DBus.GetConnectionCredentials method
 GetConnectionUnixProcessID also works correctly on Windows, returning
  the Windows process ID
 GetConnectionWindowsSID returns the correct SID on Windows
 expat is required, libxml2 can no longer be used as a substitute
 the userDB cache is required, and cannot be disabled
 a 64-bit integer type (either int, long, long long or _int64) is required
 better systemd-journald integration on Linux
 fixed long-standing fd and array leaks when failing to parse a message
 fixed referenced-but-never-freed parent nodes (effectively memory leaks)
  when using certain object-path allocation patterns, notably in Avahi
 better defaults for Windows support
 better CMake support
 better portability to mingw32, FreeBSD, NetBSD, QNX and Hurd
 the source language for the man pages is now Docbook XML

Enhancements since 1.7.10:
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 Enhance the CMake build system to check for GLib and compile/run
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  a subset of the regression tests (fd.o #41252, #73495; Ralf Habacker)
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Fixes since 1.7.10:
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 don't rely on va_copy(), use DBUS_VA_COPY() wrapper (fd.o #72840,
  Ralf Habacker)

• fix compilation of systemd journal support on older systemd versions where
  sd-journal.h doesn't include syslog.h (fd.o #73455, Ralf Habacker)

 fix compilation on older MSVC versions by including stdlib.h
  (fd.o #73455, Ralf Habacker)

 Allow <allow_anonymous/> to appear in an included configuration file
  (fd.o #73475, Matt Hoosier)

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Test behaviour changes since 1.7.10:
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 If the tests crash with an assertion failure, they no longer default to
  blocking for a debugger to be attached. Set DBUS_BLOCK_ON_ABORT in the
  environment if you want the old behaviour.

 To improve debuggability, the dbus-daemon and dbus-daemon-eavesdrop tests
  can be run with an external dbus-daemon by setting
  DBUS_TEST_DAEMON_ADDRESS in the environment. Test-cases that require
  an unusually-configured dbus-daemon are skipped.

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D-Bus 1.7.10 (2014-01-06)
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==

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The weighted companion cube release.

This is a release candidate for D-Bus 1.8.

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D-Bus Specification 0.23:

 don't require messages with no INTERFACE to be dispatched
  (fd.o #68597, Simon McVittie)

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• document "tcp:bind=..." and "nonce-tcp:bind=..." (fd.o #72301,
  Chengwei Yang)

• define "listenable" and "connectable" addresses, and discuss
  the difference (fd.o #61303, Simon McVittie)

Enhancements:

• support printing Unix file descriptors in dbus-send, dbus-monitor
  (fd.o #70592, Robert Ancell)

• don't install systemd units if --disable-systemd is given
  (fd.o #71818, Chengwei Yang)

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Fixes:

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 don't leak memory on out-of-memory while listing activatable or
  active services (fd.o #71526, Radoslaw Pajak)

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• fix undefined behaviour in a regression test (fd.o #69924, DreamNik)

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• escape Unix socket addresses correctly (fd.o #46013, Chengwei Yang)

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• on SELinux systems, don't assume that SECCLASS_DBUS, DBUS__ACQUIRE_SVC
  and DBUS__SEND_MSG are numerically equal to their values in the
  reference policy (fd.o #88719, osmond sun)

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 define PROCESS_QUERY_LIMITED_INFORMATION if missing from MinGW < 4 headers
  (fd.o #71366, Matt Fischer)

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 define WIN32_LEAN_AND_MEAN to avoid conflicts between winsock.h and
  winsock2.h (fd.o #71405, Matt Fischer)

 do not return failure from _dbus_read_nonce() with no error set,
  preventing a potential crash (fd.o #72298, Chengwei Yang)

 on BSD systems, avoid some O(1)-per-process memory and fd leaks in kqueue,
  preventing test failures (fd.o #69332, fd.o #72213; Chengwei Yang)

 fix warning spam on Hurd by not trying to set SO_REUSEADDR on Unix sockets,
  which doesn't do anything anyway on at least Linux and FreeBSD
  (fd.o #69492, Simon McVittie)

• fix use of TCP sockets on FreeBSD and Hurd by tolerating EINVAL from
  sendmsg() with SCM_CREDS (retrying with plain send()), and looking
  for credentials more correctly (fd.o #69492, Simon McVittie)

• ensure that tests run with a temporary XDG_RUNTIME_DIR to avoid
  getting mixed up in XDG/systemd "user sessions" (fd.o #61301,
  Simon McVittie)

• refresh cached policy rules for existing connections when bus
  configuration changes (fd.o #39463, Chengwei Yang)
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D-Bus 1.7.8 (2013-11-01)
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==

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The “extreme hills” release.

Dependencies:

• If systemd support is enabled, libsystemd-journal is now required.

Enhancements:

• When activating a non-systemd service under systemd, annotate its
  stdout/stderr with its bus name in the Journal. Known limitation:
  because the socket is opened before forking, the process will still be
  logged as if it had dbus-daemon's process ID and user ID.
  (fd.o #68559, Chengwei Yang)

 Document more configuration elements in dbus-daemon(1)
  (fd.o #69125, Chengwei Yang)

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Fixes:

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1.7.8  
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 Don't leak string arrays or fds if dbus_message_iter_get_args_valist()
  unpacks them and then encounters an error (fd.o #21259, Chengwei Yang)

• If compiled with libaudit, retain CAP_AUDIT_WRITE so we can write
  disallowed method calls to the audit log, fixing a regression in 1.7.6
  (fd.o #49062, Colin Walters)

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• path_namespace='/' in match rules incorrectly matched nothing; it
  now matches everything. (fd.o #70799, Simon McVittie)
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D-Bus 1.7.6 (2013-10-09)
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==

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The “CSI Shrewsbury” release.

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Build-time configuration changes:

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• Directory change notification via dnotify on Linux is no longer
  supported; it hadn't compiled successfully since 2010 in any case.
  If you don't have inotify (Linux) or kqueue (*BSD), you will need
  to send SIGHUP to the dbus-daemon when its configuration changes.
  (fd.o #33001, Chengwei Yang)

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• Compiling with --disable-userdb-cache is no longer supported;
  it didn't work since at least 2008, and would lead to an extremely
  slow dbus-daemon even it worked. (fd.o #15589, #17133, #66947;
  Chengwei Yang)

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 The DBUS_DISABLE_ASSERTS CMake option didn't actually disable most
  assertions. It has been renamed to DBUS_DISABLE_ASSERT to be consistent
  with the Autotools build system. (fd.o #66142, Chengwei Yang)

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• --with-valgrind=auto enables Valgrind instrumentation if and only if
  valgrind headers are available. The default is still --with-valgrind=no.
  (fd.o #56925, Simon McVittie)

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Dependencies:

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• Platforms with no 64-bit integer type are no longer supported.
  (fd.o #65429, Simon McVittie)

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• GNU make is now (documented to be) required. (fd.o #48277, Simon McVittie)

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• Full test coverage no longer requires dbus-glib, although the tests do not
  exercise the shared library (only a static copy) if dbus-glib is missing.
  (fd.o #68852, Simon McVittie)

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Enhancements:

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• D-Bus Specification 0.22
  · Document GetAdtAuditSessionData() and
    GetConnectionSELinuxSecurityContext() (fd.o #54445, Simon)
  · Fix example .service file (fd.o #66481, Chengwei Yang)
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  · Don't claim D-Bus is "low-latency" (lower than what?), just
    give factual statements about it supporting async use
    (fd.o #65141, Justin Lee)
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  · Document the contents of .service files, and the fact that
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    system services' filenames are constrained
    (fd.o #66608; Simon McVittie, Chengwei Yang)
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• Be thread-safe by default on all platforms, even if
  dbus_threads_init_default() has not been called. For compatibility with
  older libdbus, library users should continue to call
  dbus_threads_init_default(): it is harmless to do so.
  (fd.o #54972, Simon McVittie)

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• Add GetConnectionCredentials() method (fd.o #54445, Simon)