The reload handling for activation simply dropped all knowledge
of pending activations, which was clearly wrong. Refactor things
so that reload only reloads directories, server address etc.
Based on a patch originally from Matthias Clasen <mclasen@redhat.com>
A variety of system components have migrated from legacy init into DBus
service activation. Many of these system components "daemonize", which
involves forking. The DBus activation system treated an exit as an
activation failure, assuming that the child process which grabbed the
DBus name didn't run first.
While we're in here, also differentiate in this code path between the
servicehelper (system) versus direct activation (session) paths. In
the session activation path our error message mentioned a helper
process which was confusing, since none was involved.
Based on a patch and debugging research from Ray Strode <rstrode@redhat.com>
Commit 91306ef938 introduced
two memory leaks on OOM error paths. In one case the
environment string array wasn't getting freed, and in the
other case it was getting freed with dbus_free instead of
dbus_free_string_array.
We now keep the environment in a hash table member of the
activation object and provide a method
bus_activation_set_environment_variable to modify the
hash table. This hash table is seeded initially with the
environment of the bus daemon itself.
* bus/config-parser-trivial.c (check_return_values): disable a
test that hardcoded the bus user's name
* bus/dispatch.c (bus_dispatch_test_conf): remove the "if
(!use_launcher)" around the tests, they were only failing because
we didn't pass through all the expected errors from the helper.
* bus/activation-exit-codes.h
(BUS_SPAWN_EXIT_CODE_CHILD_SIGNALED): add a code for child segfaulting
(BUS_SPAWN_EXIT_CODE_GENERIC_FAILURE): make "1" be a generic
failure code, so if a third party launch helper were written it
could just always return 1 on failure.
* configure.in: add AM_PROG_CC_C_O to allow per-target CPPFLAGS
* bus/dispatch.c (bus_dispatch_test_conf): Fix up setting
TEST_LAUNCH_HELPER_CONFIG to include the full path, and enable
test shell_fail_service_auto_start when use_launcher==TRUE
* bus/activation-helper-bin.c (convert_error_to_exit_code): pass
through the INVALID_ARGS error so the test suite works
* bus/activation.c (handle_activation_exit_error): return
DBUS_ERROR_NO_MEMORY if we get BUS_SPAWN_EXIT_CODE_NO_MEMORY
* dbus/dbus-spawn.c (_dbus_babysitter_get_child_exit_status):
return only the exit code of the child, not the entire thingy from
waitpid(), and make the return value indicate whether the child
exited normally (with a status code)
* bus/bus.c (process_config_first_time_only): _dbus_strdup works
on NULL so no need to check
(process_config_every_time): move servicehelper init here, so we
reload it on HUP or config file change
* bus/Makefile.am (install-data-hook): remove comment because
Emacs make mode seems to be grumpy about it
* bus/activation.c: (bus_activation_entry_unref),
(update_desktop_file_entry):
Add the concept of, and read the value of user from the desktop file.
The user string is not required unless we are using system activation.
* bus/activation.c:
* bus/desktop-file.h:
Move the defines into the header file, as we use these in the lauch
helper as well as the desktop file parsing.
* dbus/dbus-sysdeps.c (_dbus_set_errno_to_zero)
(_dbus_get_is_errno_nonzero, _dbus_get_is_errno_eintr)
(_dbus_strerror_from_errno): family of functions to abstract
errno, though these are somewhat bogus (really we should make our
socket wrappers not use errno probably - the issue is that any
usage of errno that isn't socket-related probably is not
cross-platform, so should either be in a unix-only file that can
use errno directly, or is a bug - these general errno wrappers
hide issues of this nature in non-socket code, while
socket-specific API changes would not since sockets are allowed
cross-platform)
with cleanups of bugs found from Coverity reports:
* dbus/dbus-sysdeps-util.c (_dbus_write_pid_file):
close the file on error to avoid a leak
* bus/expirelist.c (bus_expire_list_test):
Check for NULL on dbus_new0
* bus/activation.c (update_directory):
remove dead code
* bus/config-parser.c (merge_service_context_hash, start_selinux_child):
Fix some leaks
* bus/bus.c (process_config_every_time):
Fixed a leak
* bus/desktop-file.c (parse_key_value):
Fixed leak
* bus/selinux.c (bus_selinux_id_table_insert):
Fixed leak
get the list of services that can be activated
* bus/dispatch.c: test coverage for the new bus method
ListActivatableNames
* bus/driver.c: new bus method ListActivatableNames to get the list of
services that can be activated
* doc/dbus-specification.xml: ListActivatableNames method documentation
Makefile list
* dbus/dbus-shared.h (#define DBUS_NAME_FLAG_ALLOW_REPLACEMENT):
New flag which replaces DBUS_NAME_FLAG_PROHIBIT_REPLACEMENT
(#define DBUS_NAME_FLAG_DO_NOT_QUEUE): New flag for specifying
not to queue an ower if it can't be the primary owner
* bus/bus.h: Add new internal BusOwner struct
* bus/driver.c (bus_driver_handle_hello): Send flags (0 for default)
to bus_registry_ensure and don't set the prohibit_replacement flag
since they are now set per BusOwner and not per name.
(bus_driver_handle_list_queued_owners): bus method (ListQueuedOwners)
that returns the list of connections in a name's connection queue
* bus/services.c (struct BusService): remove prohibit_replacement field
(struct BusOwner): new struct for keeping track of queued connections
and their associated flags for the queue
(struct BusRegistry): add a BusOwner memory pool
(bus_registry_new): initialize the BusOwner memory pool
(bus_registry_unref): free the BusOwner memory pool
(_bus_service_find_owner_link): new internal method for
searching the queue for a specific connection
(bus_owner_set_flags): new method for adding setting the flags on a
bus owner
(bus_owner_new): new method that creates a BusOwner object from the
pool and sets its flags
(bus_owner_ref, bus_owner_unref): ref counting for BusOwner objects
(bus_registry_ensure): Add the flags parameter
(bus_registry_acquire_service): Switch from using raw connections to
using the BusOwner struct
Add new state machine for dealing with the new set of flags
(bus_registry_set_service_context_table, struct OwnershipCancelData,
cancel_ownership, free_ownership_cancel_data,
add_cancel_ownership_to_transaction, struct OwnershipRestoreData,
restore_ownership, free_ownership_restore_data,
add_restore_ownership_to_transaction): Switch to using BusOwner
instead of raw connections
(bus_service_add_owner): Add flags parameter
Switch to using BusOwner instead of raw connections
Add state machine for dealing with the new set of flags
(bus_service_swap_owner): Swaps the first and second owners in the
queue. Used to make sure proper signals are sent when a service looses
or gains primary ownership. We never insert an owner at the top of the
queue. Instead we insert it in the second position and then swap.
(bus_service_remove_owner): Remove the owner from the queue sending
out the NameLost and NameOwnerChanged signals if the we were the
primary owner
(bus_service_get_primary_owners_connection): New method that extracts
the connection from the primary owner
(bus_service_get_primary_owner): Returns the BusOwner instead of the
connection
(bus_service_get_allow_replacement): Changed from the old
bus_service_get_prohibit_replacement method. Checks the flags of the
primary owner and returns if it can be replaced or not
(bus_service_set_prohibit_replacement): removed
(bus_service_has_owner): returns TRUE if and owner with
the specified connection exists in the queue
* dbus/dbus-bus.c (dbus_bus_connection_get_unique_name): New helper
method that only compiles if tests are enabled. Allows us to get the
unique name of a connection so we can check it against the queue when
doing regression tests
* bus/activation.c (bus_activation_send_pending_auto_activate),
bus/dispatch.c (bus_dispatch),
bus/driver.c (bus_driver_handle_get_service_owner,
bus_driver_handle_get_connection_unix_user,
bus_driver_handle_get_connection_unix_process_id,
bus_driver_handle_get_connection_selinux_security_context),
bus/signals.c (connection_is_primary_owner):
use bus_service_get_primary_owners_connection instead of
bus_service_get_primary_owner
* dbus/dbus-sysdeps.c (_dbus_connect_unix_socket,
_dbus_listen_unix_socket): Calculate the length of the socket
path and use that instead of using a fixed length which was
causing socket names to contain many trailing Nul bytes.
* dbus/dbus-glib-lowlevel.h, glib/dbus-gobject.c
(dbus_g_method_get_sender): New method for extracting the sender
from a DBusGMethodInvocation
(dbus_g_method_return_get_reply): changed name to
dbus_g_method_get_reply
(dbus_g_method_return_send_reply): changed name to
dbus_g_method_send reply
* doc/dbus-specification.xml: New docs that describe how the new
queueing system works and talks about the changes to the how
we specify socket names
* glib/examples/example-service.c,
glib/examples/example-signal-emitter.c,
glib/examples/statemachine/statemachine-server.c:
Changed the RequestName flags to the new system
* test/name-test/ (test-names.c, run-test.sh, Makefile.am): New
regression test suite for testing various states of the new
queueing system
* Patch from Steve Grubb:
- bus/activation.c (bus_activation_service_reload_test): clean up
some indentation
- dbus/dbus-keyring.c (_dbus_keyring_reload): fix conditional
- dbus/dbus-message-factory.c (generate_special): fix a couple of
buffer overflows in the test suite. This is non critical because
it can not be exploited and this code is only run when doing a
make check.
* Patch from Yaakov Selkowitz: Build fixes for Cygwin
- configure.in: Don't check and link against kdecore, only qt headers
- dbus/Makefile.am: Add -no-undefined to libdbus_1_la_LDFLAGS
- gcj/org/freedesktop/dbus/Makefile.am:
add libdbus_gcj_1_la_LDFLAGS = -no-undefined
- glib/Makefile.am: Add -no-undefined to libdbus_glib_1_la_LDFLAGS
and $(DBUS_GLIB_LIBS) to dbus_binding_tool_LDADD
- qt/Makefile.am: Add -no-undefined to libdbus_qt_1_la_LDFLAGS
- tools/Makefile.am: Add platform extentions to binaries
(i.e. .exe on windows)
* configure.in:
- Make it so if no suitable version of python is found we only
disable building python instead of exiting the configure script
- Require version 2.4 of glib for glib bindings
- Up version to 0.50
* python/__init__.py: Sync version with libdbus to (0,50,0)
2005-07-14 John (J5) Palmieri <johnp@redhat.com>
* bus/activation.c: clean up all tabs to be 8 spaces
(bus_activation_activate_service): make sure we clean up
if activation fails
* bus/dispatch.c: clean up all tabs to be 8 spaces
(check_shell_fail_service_auto_start): New function
tests to make sure we get fail properly when trying to auto start a service
with a faulty command line
(check_shell_service_success_auto_start): New function tests to make sure
auto started services get the arguments on the command line
* test/test-shell-service.c: Added service for testing auto-starting with
command line arguments
* test/data/valid-service-files/debug-shell-echo-fail.service.in,
test/data/valid-service-files/debug-shell-echo-success.service.in:
Added service files for testing auto-starting with command line arguments
* */.cvsignore: added a bunch of generated files to various .cvsignore files
2005-07-14 Rodrigo Moya <rodrigo@novell.com>
* dbus/dbus-shell.[ch]: copy/pasted code from GLib.
* dbus/Makefile.am: added new files to build.
* bus/activation.c (bus_activation_activate_service): support
activation commands with parameters.
* test/shell-test.c: added test program for the shell parsing
code.
* Throughout, grand renaming to strip out the use of "service",
just say "name" instead (or "bus name" when ambiguous). Did not
change the internal code of the message bus itself, only the
programmer-facing API and messages.
* doc/dbus-specification.xml: further update the message bus section
* bus/config-parser.c (all_are_equiv): fix bug using freed string
in error case
* Land the new message args API and type system.
This patch is huge, but the public API change is not
really large. The set of D-BUS types has changed somewhat,
and the arg "getters" are more geared toward language bindings;
they don't make a copy, etc.
There are also some known issues. See these emails for details
on this huge patch:
http://lists.freedesktop.org/archives/dbus/2004-December/001836.htmlhttp://lists.freedesktop.org/archives/dbus/2005-January/001922.html
* dbus/dbus-marshal-*: all the new stuff
* dbus/dbus-message.c: basically rewritten
* dbus/dbus-memory.c (check_guards): with "guards" enabled, init
freed blocks to be all non-nul bytes so using freed memory is less
likely to work right
* dbus/dbus-internals.c (_dbus_test_oom_handling): add
DBUS_FAIL_MALLOC=N environment variable, so you can do
DBUS_FAIL_MALLOC=0 to skip the out-of-memory checking, or
DBUS_FAIL_MALLOC=10 to make it really, really, really slow and
thorough.
* qt/message.cpp: port to the new message args API
(operator<<): use str.utf8() rather than str.unicode()
(pretty sure this is right from the Qt docs?)
* glib/dbus-gvalue.c: port to the new message args API
* bus/dispatch.c, bus/driver.c: port to the new message args API
* dbus/dbus-string.c (_dbus_string_init_const_len): initialize the
"locked" flag to TRUE and align_offset to 0; I guess we never
looked at these anyhow, but seems cleaner.
* dbus/dbus-string.h (_DBUS_STRING_ALLOCATION_PADDING):
move allocation padding macro to this header; use it to implement
(_DBUS_STRING_STATIC): ability to declare a static string.
* dbus/dbus-message.c (_dbus_message_has_type_interface_member):
change to return TRUE if the interface is not set.
* dbus/dbus-string.[hc]: move the D-BUS specific validation stuff
to dbus-marshal-validate.[hc]
* dbus/dbus-marshal-basic.c (_dbus_type_to_string): move here from
dbus-internals.c
* dbus/Makefile.am: cut over from dbus-marshal.[hc]
to dbus-marshal-*.[hc]
* dbus/dbus-object-tree.c (_dbus_decompose_path): move this
function here from dbus-marshal.c
backend for config file loader. Doesn't work with full OOM test yet.
* configure.in: change error when selecting libxml into a warning.
* test/data/invalid-config-files: add two non-well-formed XML files.
* glib/Makefile.am: libdbus_gtool always uses expat, not libxml.
* dbus/dbus-transport-unix.c (unix_handle_watch): do not disconnect in
case of DBUS_WATCH_HANGUP, several do_reading() may be necessary to
read all the buffer. (bug #894)
* bus/activation.c (bus_activation_activate_service): fix a potential
assertion failure (bug #896). Small optimization in the case of
auto-activation messages.
* dbus/dbus-message.c (verify_test_message, _dbus_message_test): add
test case for byte-through-vararg bug (#901). patch by Kimmo
Hämäläinen.
* bus/activation.c:
(babysitter_watch_callback): notify all pending activations waiting for
the same exec that the activation failed.
(bus_activation_activate_service): shortcut the activation if we
already waiting for the same executable to start up.
* bus/activation.c:
- Added service file reloading.
Each service files directory is kept in an hash table in
BusActivation and each BusActivationEntry knows what .service-file it
was read from. So when you try to activate a service the bus will
check if it's been updated, removed or if new .service-files has
been installed.
- Test code at the bottom for the service file reloading.
* bus/test-main.c: (main):
* bus/test.h:
- added service reloading test.
* dbus/dbus-sysdeps.c:
* dbus/dbus-sysdeps.h: (_dbus_delete_directory): Added.
* bus/connection.c (bus_pending_reply_expired): either cancel or
execute, not both
(bus_connections_check_reply): use unlink, not remove_link, as we
don't want to free the link; fixes double free mess
* dbus/dbus-pending-call.c (dbus_pending_call_block): fix in case
where no reply was received
* dbus/dbus-connection.c (_dbus_pending_call_complete_and_unlock):
fix a refcount leak
* bus/signals.c (match_rule_matches): add special cases for the
bus driver, so you can match on sender/destination for it.
* dbus/dbus-sysdeps.c (_dbus_abort): print backtrace if
DBUS_PRINT_BACKTRACE is set
* dbus/dbus-internals.c: add pid to assertion failure messages
* dbus/dbus-connection.c: add message type code to the debug spew
* glib/dbus-gproxy.c (gproxy_get_match_rule): match rules want
sender=foo not service=foo
* dbus/dbus-bus.c (dbus_bus_get): if the activation bus is the
session bus but DBUS_SESSION_BUS_ADDRESS isn't set, use
DBUS_ACTIVATION_ADDRESS instead
* bus/activation.c: set DBUS_SESSION_BUS_ADDRESS,
DBUS_SYSTEM_BUS_ADDRESS if appropriate
* bus/bus.c (bus_context_new): handle OOM copying bus type into
context struct
* dbus/dbus-message.c (dbus_message_iter_get_object_path): new function
(dbus_message_iter_get_object_path_array): new function (half
finished, disabled for the moment)
* glib/dbus-gproxy.c (dbus_gproxy_end_call): properly handle
DBUS_MESSAGE_TYPE_ERROR
* tools/dbus-launch.c (babysit): support DBUS_DEBUG_OUTPUT to
avoid redirecting stderr to /dev/null
(babysit): close stdin if not doing the "exit_with_session" thing
* dbus/dbus-sysdeps.c (_dbus_become_daemon): delete some leftover
debug code; change DBUS_DEBUG_OUTPUT to only enable stderr, not
stdout/stdin, so things don't get confused
* bus/system.conf.in: fix to allow replies, I modified .conf
instead of .conf.in again.
* tools/dbus-send.c (main): add --type argument, for now
supporting only method_call and signal types.
* tools/dbus-print-message.c: print message type
* dbus/dbus-connection.c (_dbus_connection_new_for_transport):
init connection->objects
* doc/dbus-specification.sgml: fix sgml
* bus/*.c: port over to object-instance API changes
* test/test-service.c: ditto
* dbus/dbus-message.c (dbus_message_create_header): allow #NULL
name, we will have to fix up the rest of the code to also handle
this
(dbus_message_new): generic message-creation call
(set_string_field): allow appending name field
* configure.in:
* bus/activation.c: (bus_activation_service_created),
(bus_activation_activate_service):
* bus/driver.c: (bus_driver_send_service_deleted),
(bus_driver_send_service_created), (bus_driver_send_service_lost),
(bus_driver_send_service_acquired),
(bus_driver_send_welcome_message),
(bus_driver_handle_list_services):
* bus/session.conf.in:
* dbus/dbus-bus.c: (dbus_bus_acquire_service),
(dbus_bus_service_exists), (dbus_bus_activate_service):
* dbus/dbus-bus.h:
Add some convenience API which lets you activate a service, and did a
bunch of s/0/DBUS_TYPE_INVALID/ in calls to dbus_message_append_args()
and dbus_message_get_args()
Unbreak my code...
* dbus/dbus-transport.c (_dbus_transport_get_dispatch_status):
report correct status if we finish processing authentication
inside this function.
* bus/activation.c (try_send_activation_failure): use
bus_transaction_send_error_reply
* bus/connection.c (bus_connection_get_groups): return an error
explaining the problem
* bus/bus.c (bus_context_check_security_policy): implement
restriction here that inactive connections can only send the
hello message. Also, allow bus driver to send anything to
any recipient.
* bus/connection.c (bus_connection_complete): create the
BusClientPolicy here instead of on-demand.
(bus_connection_get_policy): don't return an error
* dbus/dbus-message.c (dbus_message_new_error_reply): allow NULL
sender field in message being replied to
* bus/bus.c (bus_context_check_security_policy): fix silly typo
causing it to return FALSE always
* bus/policy.c (bus_client_policy_check_can_send): fix bug where
we checked sender rather than destination
test suite is slightly hosed at the moment, will fix soon
* bus/connection.c (bus_connections_expire_incomplete): fix to
properly disable the timeout when required
(bus_connection_set_name): check whether we can remove incomplete
connections timeout after we complete each connection.
* dbus/dbus-mainloop.c (check_timeout): fix this up a bit,
probably still broken.
* bus/services.c (bus_registry_acquire_service): implement max
number of services owned, and honor allow/deny rules on which
services a connection can own.
* bus/connection.c (bus_connection_get_policy): report errors here
* bus/activation.c: implement limit on number of pending
activations
* glib/dbus-gmain.c: adapt to watch changes
* bus/bus.c, bus/activation.c, etc.: adjust to watch changes
* dbus/dbus-server.h: remove dbus_server_handle_watch
* dbus/dbus-connection.h: remove dbus_connection_handle_watch
* dbus/dbus-watch.c (dbus_watch_handle): change DBusWatch to work
like DBusTimeout, so we don't need dbus_connection_handle_watch
etc.
* dbus/dbus-mainloop.c: fix some reentrancy issues by refcounting
callbacks
* test/data/valid-config-files/debug-allow-all.conf.in: allow all
users
* dbus/dbus-transport.c (_dbus_transport_get_dispatch_status):
fix to only recover unused bytes if we're already authenticated
(_dbus_transport_get_is_authenticated): fix to still mark us
authenticated if there are unused bytes.
* bus/dispatch.c: implement security policy checking
* bus/connection.c (bus_transaction_send_from_driver): new
* bus/bus.c (bus_context_check_security_policy): new
* bus/dispatch.c (send_service_nonexistent_error): delete this,
now we just set the DBusError and it gets converted to an error
reply.
* bus/connection.c (allow_user_function): enable code using actual
data from the config file
* bus/policy.c (list_allows_user): handle wildcard rules for
user/group connection perms
* dbus/dbus-spawn.c (_dbus_spawn_async_with_babysitter): move all
the possible parent failures before we fork, so that we don't
fail to create a babysitter after creating the child.
* bus/activation.c (bus_activation_activate_service): kill child
if we don't successfully complete the activation.
* dbus/dbus-connection.c (dbus_connection_flush): don't spin on
the connection if it's disconnected
* bus/activation.c (bus_activation_service_created): use new
transaction features to roll back removal of pending activation if
we don't successfully create the service after all. Don't remove
pending activation if the function fails.
* dbus/dbus-list.c (_dbus_list_insert_before_link)
(_dbus_list_insert_after_link): new code to facilitate
services.c fixes
* dbus/dbus-hash.c (_dbus_hash_table_insert_string_preallocated):
new functionality, so we can preallocate the ability to insert
into a hash table.
* bus/connection.c (bus_transaction_add_cancel_hook): new function
allowing us to put custom hooks in a transaction to be used for
cancelling said transaction
* doc/dbus-specification.sgml: add some discussion of secondary
service owners, and disallow zero-length service names
* bus/services.c (bus_registry_acquire_service): new function,
splits out part of bus_driver_handle_acquire_service() and fixes
a bug where we didn't remove the service doing the acquiring
from the secondary queue if we failed to remove the current owner
from the front of the queue.
* bus/dispatch.c: lots of fixes
* dbus/dbus-mainloop.c (_dbus_loop_dispatch): export
(_dbus_loop_iterate): remove old "quit if no callbacks" code,
that was crack, broke the test service.
* dbus/dbus-transport.c (_dbus_transport_open): fix error
handling to avoid piling up errors if we get a failure on the
first address.
* dbus/dbus-internals.c (_dbus_real_assert_not_reached): include
pid in assertion failures.
* dbus/dbus-mainloop.c (_dbus_loop_iterate): use static arrays up
to some fixed size of file descriptor array. Don't return TRUE
anytime a timeout exists, that led to lots of busy loop silliness
in the tests.
* doc/dbus-specification.sgml: require that base service names
start with ':' and that the base service is created/deleted
as first and last things a connection does on the bus
* bus/dispatch.c (check_existent_service_activation): lots more
work on the activation test; it doesn't fully pass yet...
* test/test-service.c (main): fix so we don't memleak the
connection to the message bus
(filter_func): accept a message asking us to exit
* dbus/Makefile.am: split lists of sources into stuff that goes in
the library, util functions that go in the lib and are also used
elsewhere, and util functions that are used in tests/daemon but
don't go in the lib.
* dbus/dbus-mainloop.h, dbus/dbus-mainloop.c: move bus/loop.[hc]
here so it can be used in test binaries also
* bus/loop.c (bus_loop_iterate): fix the timeout code, using
magic from GLib
* dbus/dbus-spawn.c (_dbus_babysitter_unref): set sitter_pid
to -1 once we've reaped the babysitter
(_dbus_babysitter_handle_watch): do as much work as we can, not
just one go of it
* bus/activation.c: add code using DBusBabysitter so that we
handle it when a service fails to start up properly.
(bus_activation_service_created): don't remove the activation
entries as we go, just let them get removed when we free the pending
activation. Unref reply messages after sending them.
* Makefile.am (coverage-report.txt): add target "coverage-report.txt"
* test/decode-gcov.c: hack up a little program to suck data
out of gcov files. Yes this is sort of silly.
* configure.in: define something in config.h and do an
AM_CONDITIONAL when gcov is enabled
* dbus/dbus-spawn.c, dbus/dbus-spawn.h: Change dbus_spawn to
return a "babysitter" object that is used to monitor the status of
the spawned process and reap it when required.
* test/test-segfault.c, test/test-exit.c,
test/test-sleep-forever.c: binaries that do various lame things,
used in the test suite.
* dbus/dbus-sysdeps.c: kill _dbus_errno_to_string()
