This should mean we don't get invalid fds in the main loop.
The BSD (kqueue) and Windows code paths are untested, but follow the same
patterns as the tested Linux/generic Unix versions.
DBusTransportSocket was already OK (it called free_watches() before
_dbus_close_socket, and that did the remove, invalidate, unref dance).
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=33336
Reviewed-by: Will Thompson <will.thompson@collabora.co.uk>
Reviewed-by: Thiago Macieira <thiago@kde.org>
Internal setup of session bus type was bound to the presence of the --session
command line parameter which prevents to use the --config-file parameter for
session bus setup.
Replace dbus_daemon_init() by dbus_publish_session_bus_address(),
publishing the full address. Omit username from mutexes (not necessary
as mutex names are local to session). Don't exit if publishing the
address failed (allow multiple session bus instances per
session). Based on 00ee92ae314 by Tor Lillqvist.
Cherry-picked from commit 23945513e9a4da61d286ebfbce3897aa061ddbfe in
the dbus4win repository by tml@iki.fi. Remove claim of that commit not
being merged from README.dbus4win.
All users of full duplex pipes enable FD_CLOEXEC later anyway so let's
just do it as part of _dbus_full_duplex_pipe. By side effect this allows
to make use of SOCK_CLOEXEC which fixes a race when forking/execing from
a different thread at the same time as we ar in this function.
* tools/dbus-launch-x11.c (set_address_in_x11): fix from Michael
Lorenz to use long not int with XChangeProperty format 32
* dbus/dbus-sysdeps-util-unix.c
(_dbus_write_pid_to_file_and_pipe): factor this out, and use the
same code in _dbus_become_daemon (where the parent writes the pid
file and to the pid pipe) and in bus_context_new (where the daemon
writes its own pid file and to its own pid pipe)
* bus/bus.c (bus_context_new): close the pid pipe after we print
to it. Also, don't write the pid to the pipe twice when we fork,
someone reported this bug a long time ago.
* dbus/dbus-sysdeps-unix.c (_dbus_append_session_config_file)
(_dbus_append_system_config_file): new functions
* bus/main.c (main): use _dbus_append_system_config_file() and
_dbus_append_session_config_file()
* dbus/Makefile.am (INCLUDES): move DBUS_SYSTEM_CONFIG_FILE and
DBUS_SESSION_CONFIG_FILE into this makefile
* 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)
* dbus-sysdeps-win.h (_dbus_get_config_file_name,_dbus_file_exists): new prototyp, undefined interface after including windows.h because t makes trouble when a paramater is named interface.
* dbus-sysdeps-win.c (_dbus_get_install_root,_dbus_get_config_file_name,_dbus_file_exists): new functions.
* tools/dbus-launch.c (do_close_stderr): fix C89 problem and
formatting problem
* Mostly fix the DBusPipe mess.
- put line break after function return types
- put space before parens
- do not pass structs around by value
- don't use dbus_strerror after calling supposedly cross-platform
api
- don't name pipe variables "fd"
- abstract special fd numbers like -1 and 1
* bus/bus.c (process_config_every_time):
don't overwrite existing bus context activation object
until after we've checked that the new activation is
valid.
* bus/main.c
(signal_handler), (handle_reload_watch):
don't call exit() on failure, instead make do and keep
going.
(close_reload_pipe): new function to turn off
hangup-causes-config-reload behavior if an unexpected
error occurs
* dbus/dbus-sysdeps-unix.h: small change to Peter's patch to make
dbus-sysdeps-unix-util.c build, add unix-specific sysdeps header.
* dbus/dbus-sysdeps.h, dbus-sysdeps-unix.c: patch from Peter
Kümmel bug #8249 to make the sysdeps.h read/write/open/close
functions specifically for sockets only, and move generic
read/write/open/close into unix-specific code.
(bus_driver_generate_introspect_string): New method for populating
a DBusString with the introspect data
(bus_driver_handle_introspect): Move introspect generation code to
bus_driver_generate_introspect_string
* bus/main.c:
(introspect): New function which prints out the intropect data and
exits
(main): Add a --introspect switch
* bus/bus.c (process_config_every_time): Drop existing conf-dir
watches (if applicable) and add new watches
* bus/main.c (signal_handler): Handle SIGIO if using D_NOTIFY
(main): Setup SIGIO signal handler if using D_NOTIFY
* bus/config-parser.h: Add prototype bus_config_parser_get_conf_dirs
* bus/config-parser.c (struct BusConfigParser): Add conf_dirs list
(merge_included): Also merge conf_dirs list
(bus_config_parser_unref): Clear conf_dirs list
(include_dir): Add directory to conf_dirs list
(bus_config_parser_get_conf_dirs): New function
* bus/dir-watch.[ch]: New files
* bus/Makefile.am (BUS_SOURCES): Add dir-watch.[ch]
* configure.in: Add checks for D_NOTIFY on Linux
* bus/bus.c (load_config): Break into three
separate functions: process_config_first_time_only,
process_config_every_time, and process_config_postinit.
(process_config_every_time): Move call of
bus_registry_set_service_context_table into
process_config_postinit.
(process_config_postinit): New function, does
any processing that needs to happen late
in initialization (and also on reload).
(bus_context_new): Instead of calling load_config,
open config parser here and call process_config_first_time_only
and process_config_every_time directly. Later, after
we have forked but before changing UID,
invoke bus_selinux_full_init, and then call
process_config_postinit.
(bus_context_reload_config): As in bus_context_new,
load parse file inside here, and call process_config_every_time
and process_config_postinit.
* bus/services.h, bus/services.c
(bus_registry_set_service_context_table): Rename
from bus_registry_set_sid_table. Take string hash from config
parser, and convert them here into SIDs.
* bus/config-parser.c (struct BusConfigParser): Have
config parser only store a mapping of service->context
string.
(merge_service_context_hash): New function.
(merge_included): Merge context string hashes instead
of using bus_selinux_id_table_union.
(bus_config_parser_new): Don't use bus_selinux_id_table_new;
simply create a new string hash.
(bus_config_parser_unref): Unref it.
(start_selinux_child): Simply insert strings into hash,
don't call bus_selinux_id_table_copy_over.
* bus/selinux.h, bus/selinux.c (bus_selinux_id_table_union)
(bus_selinux_id_table_copy_over): Delete.
* bus/selinux.c (bus_selinux_init): Split into two functions,
bus_selinux_pre_init and bus_selinux_post_init.
(bus_selinux_pre_init): Just determine whether SELinux is
enabled.
(bus_selinux_post_init): Do everything else.
* bus/main.c (main): Call bus_selinux_pre_init before parsing
config file, and bus_selinux_post_init after. This ensures that
we don't lose the policyreload notification thread that
bus_selinux_init created before forking previously.
* bus/test-main.c (test_pre_hook): Update for split.
DBusError that was causing a memoy leak (bug #989).
* dbus/dbus-keyring.c, dbus/dbus-message.c: fix compilation on
Solaris/Forte C (bug #974)
* bus/main.c (main): plug two minuscule memleaks.
SELinux support from Matthew Rickard <mjricka@epoch.ncsc.mil>
* bus/selinux.c, bus/selinux.h: new file encapsulating selinux
functionality
* configure.in: add --enable-selinux
* bus/policy.c (bus_policy_merge): add FIXME to a comment
* bus/main.c (main): initialize and shut down selinux
* bus/connection.c: store SELinux ID on each connection, to avoid
repeated getting of the string context and converting it into
an ID
* bus/bus.c (bus_context_get_policy): new accessor, though it
isn't used
(bus_context_check_security_policy): check whether the security
context of sender connection can send to the security context of
recipient connection
* bus/config-parser.c: add parsing for <selinux> and <associate>
* dbus/dbus-transport.c (_dbus_transport_get_unix_fd): to
implement dbus_connection_get_unix_fd()
* dbus/dbus-connection.c (dbus_connection_get_unix_fd): new
function, used by the selinux stuff
* bus/main.c (setup_reload_pipe): Added. Creates a pipe and sets
up a watch that triggers a config reload when one end of the pipe
becomes readable.
(signal_handler): Instead of doing the config reload in our SIGHUP
handler, just write to the reload pipe and let the associated
watch handle the reload when control returns to the main loop.
* bus/driver.c (bus_driver_handle_reload_config): Added.
Implements a ReloadConfig method for requesting a configuration
file reload via the bus driver.
* bus/main.c (signal_handler): Reload the configuration files
on SIGHUP.
(main): Set up our SIGHUP handler.
* bus/bus.c (struct BusContext): Store the config file, user and
fork flag in the BusContext.
(process_config_first_time_only): Added. Contains the code
(previously in bus_context_new) for setting up the BusContext from
the BusConfigParser that should only be run the first time the
config files are read.
(process_config_every_time): Added. Contains the code (previously
in bus_context_new) for setting up the BusContext from the
BusConfigParser that should be run every time the config files are
read.
(load_config): Added. Builds a BusConfigParser from the config
files and passes the resulting structure off to
process_config_first_time_only (assuming this is the first time)
and process_config_every_time.
(bus_context_new): All of the config-related code has been moved
to process_config_first_time_only and process_config_every_time.
Now this function just does the non-config-related initializations
and calls load_config.
(bus_context_reload_config): Added.
* dbus/dbus-watch.c (dbus_watch_handle): warn and return if a
watch is invalid when handled
* tools/Makefile.am, tools/dbus-launch.c, tools/dbus-launch.1: add
dbus-launch utility to launch the bus from a shell script. Didn't
actually implement dbus-launch yet, it's just a placeholder still.
* 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/bus.c (bus_context_new): print the address in here, rather
than in main(), because we need to do it before forking the daemon
* bus/dispatch.c (send_service_nonexistent_error): set the sender
on the service nonexistent error
* bus/driver.c (bus_driver_handle_acquire_service): set the
sender on the AcquireService reply
* test/data/valid-config-files/debug-allow-all.conf.in: Make test
server also listen on a UNIX socket so services can connect to it.
* bus/bus.c (bus_context_new): fix wrong handling of
server_data_slot_unref() in the error case.
* dbus/dbus-internals.h (_dbus_assert): change so it passes
"(condition) != 0" to _dbus_real_assert so that
"_dbus_assert (pointer)" doesn't cause a warning
* bus/main.c (main): accept --print-address option to print out
the message bus address
* dbus/dbus-sysdeps.c (_dbus_generate_random_ascii): export this
* dbus/dbus-transport.c (_dbus_transport_open): special error for
"tmpdir" option to unix: address on client side
* dbus/dbus-server.c (dbus_server_listen): handle "tmpdir" option
to unix: address
* configure.in (TEST_SOCKET_DIR): locate a temporary directory
we can use to create sockets in the test suite.
* bus/main.c (signal_handler): on SIGTERM, exit the daemon
cleanly. To be used for testing.
* dbus/dbus-spawn.c (babysit): use _dbus_set_signal_handler()
* dbus/dbus-sysdeps.c (_dbus_set_signal_handler): new
* dbus/dbus-server-debug-pipe.c (_dbus_transport_debug_pipe_new):
handle trying to call this when there's no servers active
Fix some annoying DBusString API and fix all affected code.
* dbus/dbus-string.c (_dbus_string_init): get rid of annoying
max_length argument
(_dbus_string_get_data): change to return string instead of using
an out param
(_dbus_string_get_const_data): ditto
(_dbus_string_get_data_len): ditto
(_dbus_string_get_const_data_len): ditto
