platform_system_core/logd/logd.rc

service logd /system/bin/logd
    socket logd stream 0666 logd logd
    socket logdr seqpacket 0666 logd logd
    socket logdw dgram+passcred 0222 logd logd
    file /proc/kmsg r
    file /dev/kmsg w
    user logd
    group logd system package_info readproc
    writepid /dev/cpuset/system-background/tasks

service logd-reinit /system/bin/logd --reinit
    oneshot
    disabled
    user logd
    group logd
    writepid /dev/cpuset/system-background/tasks

on fs
    write /dev/event-log-tags "# content owned by logd
"
    chown logd logd /dev/event-log-tags
    chmod 0644 /dev/event-log-tags
bundle init.rc contents with its service Bug: 23186545 Change-Id: I52616b8ab1165fdef716f9b8f958665f2308c12e 2015-08-14 22:02:51 +02:00			`service logd /system/bin/logd`
			`socket logd stream 0666 logd logd`
			`socket logdr seqpacket 0666 logd logd`
logd: add "+passcred" for logdw socket Tell init to set SO_PASSCRED on the socket before bind() and handoff. Test: gtest logd-unit-test --gtest_filter=logd.statistics right after boot Bug: 37985222 Change-Id: I318969ee3241834e5326233aabd97e52ef505969 2017-05-06 00:32:10 +02:00			`socket logdw dgram+passcred 0222 logd logd`
logd: inherit android_get_control_file() Setup and then collect from the environment /proc/kmsg and /dev/kmsg file descriptors. Do not do so for logcat --reinit. Test: gTest logd-unit-tests, liblog-unit-tests and logcat-unit-tests Bug: 32450474 Change-Id: Ied537ca561fcd4e71a9ad9c57398a23ba23f6ced 2016-10-27 17:21:35 +02:00			`file /proc/kmsg r`
			`file /dev/kmsg w`
logd: start logd service in logd uid Test: gTest logd-unit-tests, liblog-unit-tests and logcat-unit-tests Manual inspect grep '^Cap' /proc/<tid>/status for correct capabilities Bug: 32450474 Change-Id: Ia6a3872901969a789d4309d410dbfd5f5d17b3ce 2016-10-28 23:36:36 +02:00			`user logd`
logd: refine permissions to access /data/system/packages.list Refine DAC security surrounding logd.daemon worker thread and add a positive test for logd failure to access /data/system/packages.list. - Add AID_PACKAGE_INFO to groups of worker thread. - Move AID_SYSTEM to groups, setgid to AID_LOGD. - Do not drop capabilities until after setting the uid and gids. - Add a test that is part of logd.statistics test to check when packagelistparser appears broken. - If /data/system/packages.list is encrypted, ensure we do not pick up the existing inode to ensure strong positive when finding access problems. - Replace all occurrences of NULL with nullptr in gTest code for compliance with best practices. Test: gTest logd-unit-tests --gtest_filter=logd.statistics (expect consistent failure, later CLs fix) Bug: 37751120 Bug: 36645158 Change-Id: I01b26fe5e25203246ae432d272c8daa9c07cab54 2017-04-27 23:46:31 +02:00			`group logd system package_info readproc`
resolved conflicts for 5caca3dd to mnc-dr-dev-plus-aosp Change-Id: I773e514a8232b77cdd566dc36c9efc4e15f206f0 2015-09-21 23:25:34 +02:00			`writepid /dev/cpuset/system-background/tasks`
bundle init.rc contents with its service Bug: 23186545 Change-Id: I52616b8ab1165fdef716f9b8f958665f2308c12e 2015-08-14 22:02:51 +02:00
			`service logd-reinit /system/bin/logd --reinit`
			`oneshot`
			`disabled`
logd: start logd services in logd gid logd - start as root:logd+system+readproc logd-reinit - start as logd:logd ToDo: start as logd:logd+system+readproc (libminijail) Test: gTest logd-unit-tests, liblog-unit-tests and logcat-unit-tests Bug: 32450474 Change-Id: I42c806ca1730a7f9eb9e34f064ae31a2ef9fc678 2016-10-27 17:34:12 +02:00			`user logd`
			`group logd`
resolved conflicts for 5caca3dd to mnc-dr-dev-plus-aosp Change-Id: I773e514a8232b77cdd566dc36c9efc4e15f206f0 2015-09-21 23:25:34 +02:00			`writepid /dev/cpuset/system-background/tasks`
logd: add getEventTag command and service Will register a new event tag by name and format, and return an event-log-tags format response with the newly allocated tag. If format is not specified, then nothing will be recorded, but a pre-existing named entry will be listed. If name and format are not specified, list all dynamic entries. If name=* list all event log tag entries. Stickiness through logd crash will be managed with the tmpfs file /dev/event-log-tags and through a reboot with add_tag entries in the pmsg last logcat event log. On debug builds we retain a /data/misc/logd/event-log-tags file that aids stickiness and that can be picked up by the bugreport. If we detect truncation damage to /dev/event-log-tags, or to /data/misc/logd/event-log-tags, rebuild file with a new first line signature incorporating the time so mmap'd readers of the file can detect the possible change in shape and order. Manual testing: Make sure nc (netcat) is built for the target platform on the host: $ m nc Then the following can be used to issue a request on the platform: $ echo -n 'getEventTag name=<name> format="<format>"\0EXIT\0' \| > nc -U /dev/socket/logd Test: gTest logd-unit-test --gtest_filter=getEventTag* Bug: 31456426 Change-Id: I5dacc5f84a24d52dae09cca5ee1a3a9f9207f06d 2016-09-12 23:51:54 +02:00
			`on fs`
			`write /dev/event-log-tags "# content owned by logd`
			`"`
			`chown logd logd /dev/event-log-tags`
			`chmod 0644 /dev/event-log-tags`