fdo-mirrors/dbus
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/dbus/dbus.git synced 2026-02-04 17:40:31 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions
dbus/bus
History
Simon McVittie e7a4123d6e dbus-daemon-launch-helper: Reset Linux OOM score adjustment here 
Previously, we were relying on the system bus being able to reset
its OOM score adjustment after it forks, but before it execs the
dbus-daemon-launch-helper. However, it can't actually do that (leading
to dbus#378), because the system bus typically starts as root, uses its
root privileges to adjust resource limits, and then drops privileges
to the `@DBUS_USER@`, typically `dbus` or `messagebus`. This leaves the
pseudo-files in /proc for its process parameters owned by root, and the
`@DBUS_USER@` is not allowed to open them for writing.

The dbus-daemon-launch-helper is setuid root, so it can certainly
alter its OOM score adjustment before exec'ing the actual activated
service. We need to do this before dropping privileges, because after
dropping privileges we would be unable to write to this process
parameter.

This is a non-async-signal-safe context, so we can safely log errors
here, unlike the fork-and-exec code paths.

Resolves: https://gitlab.freedesktop.org/dbus/dbus/-/issues/378
Signed-off-by: Simon McVittie <smcv@collabora.com>
(cherry picked from commit 2efb462466)
2022-02-25 14:57:18 +00:00
..
legacy-config On Windows, load local configuration relative to bus setup 2015-10-02 11:24:05 +01:00
systemd-user dbus-daemon: add --syslog, --nosyslog, --syslog-only 2016-09-30 19:36:50 +01:00
sysusers.d systemd: add sysusers.d snippet for booting up with unpopulated /etc 2017-02-13 14:49:52 +00:00
tmpfiles.d tmpfiles: Add a note that one line is not needed with newer systemd 2018-01-29 11:59:51 +00:00
.gitignore Update .gitignore files 2015-02-03 15:40:01 +00:00
activation-exit-codes.h Bug 21161 - Update the FSF address 2009-07-14 15:39:47 -04:00
activation-helper-bin.c launch-helper: fix error code parsing 2013-10-09 10:51:39 +01:00
activation-helper.c dbus-daemon-launch-helper: Reset Linux OOM score adjustment here 2022-02-25 14:57:18 +00:00
activation-helper.h Add missing include 2016-02-11 20:31:31 +00:00
activation.c activation: Don't leak if delivering activation message is forbidden 2018-12-03 16:32:31 +00:00
activation.h Mediate auto-activation attempts through AppArmor 2016-11-28 12:11:45 +00:00
apparmor.c Mediate auto-activation attempts through AppArmor 2016-11-28 12:11:45 +00:00
apparmor.h Do not auto-activate services if we could not send a message 2016-11-28 12:11:41 +00:00
audit.c _dbus_change_to_daemon_user (audit code path): set DBusError correctly 2016-08-12 17:34:29 +01:00
audit.h audit: use DBUS_SYSTEM_LOG_WARNING if we cannot open the audit fd 2015-08-06 17:12:37 +01:00
bus.c bus: Try to raise soft fd limit to match hard limit 2019-05-13 11:50:34 +01:00
bus.h Do not auto-activate services if we could not send a message 2016-11-28 12:11:41 +00:00
config-loader-expat.c config-loader-expat: Tell Expat not to defend against hash collisions 2017-07-28 11:17:04 +01:00
config-parser-common.c Move defaults for some switches into a default case 2017-01-17 17:20:53 +00:00
config-parser-common.h Add apparmor element support to bus config parsing 2015-02-18 17:04:00 +00:00
config-parser-trivial.c activation-helper: Rename bus_config_parser_get_service_dirs 2017-02-21 13:23:37 +00:00
config-parser-trivial.h activation-helper: Rename bus_config_parser_get_service_dirs 2017-02-21 13:23:37 +00:00
config-parser.c config-parser: Fail on impossible send_broadcast/send_destination pair 2017-09-25 13:37:56 +01:00
config-parser.h activation: Add support for enforcing strict naming on .service files 2017-02-21 13:23:37 +00:00
connection.c bus: Don't explicitly clear BusConnections.monitors 2020-02-25 12:50:08 +00:00
connection.h Log to syslog if max_completed_connections or max_connections_per_user are exceeded 2016-08-16 16:16:32 +01:00
dbus.service.in dbus-daemon: add --syslog, --nosyslog, --syslog-only 2016-09-30 19:36:50 +01:00
dbus.socket.in systemd: enable the dbus service unconditionally 2010-09-06 03:21:17 +02:00
desktop-file.c desktop-file: Justify implementation of is_valid_section_name() 2019-04-17 13:38:05 +01:00
desktop-file.h Mediate auto-activation attempts through AppArmor 2016-11-28 12:11:45 +00:00
dir-watch-default.c Fix warnings on Windows builds. 2010-04-14 08:26:40 +02:00
dir-watch-inotify.c Remove trailing newlines from _dbus_warn, _dbus_warn_check_failed 2016-09-30 19:36:51 +01:00
dir-watch-kqueue.c Remove trailing newlines from _dbus_warn, _dbus_warn_check_failed 2016-09-30 19:36:51 +01:00
dir-watch.h Clean up inotify watch handling 2010-02-01 16:22:56 -05:00
dispatch.c tests: Don't exercise GetMachineId() or autolaunch if no machine ID 2017-06-08 18:30:39 +01:00
dispatch.h Bug 21161 - Update the FSF address 2009-07-14 15:39:47 -04:00
driver.c bus_driver_send_ack_reply: Make available to other modules 2017-06-29 15:43:25 +01:00
driver.h bus_driver_send_ack_reply: Make available to other modules 2017-06-29 15:43:25 +01:00
example-session-disable-stats.conf.in config: add examples to show how to enable/disable the Stats interface 2014-10-01 16:38:40 +01:00
example-system-enable-stats.conf.in config: add examples to show how to enable/disable the Stats interface 2014-10-01 16:38:40 +01:00
expirelist.c bus: Fix timeout restarts 2017-02-01 10:42:50 +00:00
expirelist.h Bug 21161 - Update the FSF address 2009-07-14 15:39:47 -04:00
main.c bus: Free address (from --address) when we have finished using it 2018-08-29 19:04:08 +01:00
Makefile.am Adapt to API change in AX_CODE_COVERAGE version 28 2019-04-17 10:19:57 +01:00
org.freedesktop.dbus-session.plist.in 10.4 is old so set more sensible launchd defaults. 2010-12-09 08:20:07 +01:00
policy.c policy: Add max_fds, min_fds qualifiers for send, receive rules 2017-07-28 11:36:51 +01:00
policy.h policy: Add max_fds, min_fds qualifiers for send, receive rules 2017-07-28 11:36:51 +01:00
selinux.c Return the dbus-daemon SELinux context when asking about org.freedesktop.DBus 2017-06-12 11:56:13 +01:00
selinux.h Return the dbus-daemon SELinux context when asking about org.freedesktop.DBus 2017-06-12 11:56:13 +01:00
services.c Log when we exceed max_names_per_connection (aka max_services_per_connection) 2016-08-16 17:44:30 +01:00
services.h Bug 21161 - Update the FSF address 2009-07-14 15:39:47 -04:00
session.conf.in On Windows, load local configuration relative to bus setup 2015-10-02 11:24:05 +01:00
signals.c signals: Add some missing assertions to inline unit tests 2017-02-13 14:51:29 +00:00
signals.h Mediation of processes eavesdropping 2015-02-18 18:59:46 +00:00
stats.c driver: Share bus_driver_get_conn_helper with other modules 2017-06-29 15:42:20 +01:00
stats.h Implement GetAllMatchRules on the Stats interface 2014-09-25 12:59:50 +01:00
system.conf.in system.conf: Allow unprivileged users to get dbus-daemon properties 2017-07-06 18:31:51 +01:00
test-launch-helper.c Add missing function attributes suggested by clang (but not by gcc) 2016-10-13 22:44:13 +01:00
test-main.c Add missing function attributes suggested by clang (but not by gcc) 2016-10-13 22:44:13 +01:00
test-system.c Add missing function attributes suggested by clang (but not by gcc) 2016-10-13 22:44:13 +01:00
test.c Remove trailing newlines from _dbus_warn, _dbus_warn_check_failed 2016-09-30 19:36:51 +01:00
test.h tests to embedded tests: replaced in dbus-daemon 2013-06-28 12:13:28 +01:00
utils.c Bug 21161 - Update the FSF address 2009-07-14 15:39:47 -04:00
utils.h Bug 21161 - Update the FSF address 2009-07-14 15:39:47 -04:00