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README.auditd

      1 Auditd Daemon
      2 
      3 The audit daemon is a simplified version of its desktop
      4 counterpart designed to gather the audit logs from the
      5 audit kernel subsystem. The audit subsystem of the kernel
      6 includes Linux Security Modules (LSM) messages as well.
      7 
      8 To enable the audit subsystem, you must add this to your
      9 kernel config:
     10 CONFIG_AUDIT=y
     11 
     12 To enable a LSM, you must consult that LSM's documentation, the
     13 example below is for SELinux:
     14 CONFIG_SECURITY_SELINUX=y
     15 
     16 This does not include possible dependencies that may need to be
     17 satisfied for that particular LSM.
     18

README.property

      1 The properties that logd and friends react to are:
      2 
      3 name                       type default  description
      4 ro.logd.auditd             bool   true   Enable selinux audit daemon
      5 ro.logd.auditd.dmesg       bool   true   selinux audit messages sent to dmesg.
      6 ro.logd.auditd.main        bool   true   selinux audit messages sent to main.
      7 ro.logd.auditd.events      bool   true   selinux audit messages sent to events.
      8 persist.logd.security      bool   false  Enable security buffer.
      9 ro.device_owner            bool   false  Override persist.logd.security to false
     10 ro.logd.kernel             bool+ svelte+ Enable klogd daemon
     11 ro.logd.statistics         bool+ svelte+ Enable logcat -S statistics.
     12 ro.debuggable              number        if not "1", logd.statistics &
     13                                          ro.logd.kernel default false.
     14 logd.logpersistd.enable    bool   auto   Safe to start logpersist daemon service
     15 logd.logpersistd          string persist Enable logpersist daemon, "logcatd"
     16                                          turns on logcat -f in logd context.
     17 					 Responds to logcatd, clear and stop.
     18 logd.logpersistd.buffer          persist logpersistd buffers to collect
     19 logd.logpersistd.size            persist logpersistd size in MB
     20 persist.logd.logpersistd   string        Enable logpersist daemon, "logcatd"
     21                                          turns on logcat -f in logd context.
     22 persist.logd.logpersistd.buffer    all   logpersistd buffers to collect
     23 persist.logd.logpersistd.size      256   logpersistd size in MB
     24 persist.logd.size          number  ro    Global default size of the buffer for
     25                                          all log ids at initial startup, at
     26                                          runtime use: logcat -b all -G <value>
     27 ro.logd.size               number svelte default for persist.logd.size. Larger
     28                                          platform default sizes than 256KB are
     29                                          known to not scale well under log spam
     30                                          pressure. Address the spam first,
     31                                          resist increasing the log buffer.
     32 persist.logd.size.<buffer> number  ro    Size of the buffer for <buffer> log
     33 ro.logd.size.<buffer>      number svelte default for persist.logd.size.<buffer>
     34 ro.config.low_ram          bool   false  if true, logd.statistics,
     35                                          ro.logd.kernel default false,
     36                                          logd.size 64K instead of 256K.
     37 persist.logd.filter        string        Pruning filter to optimize content.
     38                                          At runtime use: logcat -P "<string>"
     39 ro.logd.filter       string "~! ~1000/!" default for persist.logd.filter.
     40                                          This default means to prune the
     41                                          oldest entries of chattiest UID, and
     42                                          the chattiest PID of system
     43                                          (1000, or AID_SYSTEM).
     44 persist.logd.timestamp     string  ro    The recording timestamp source.
     45                                          "m[onotonic]" is the only supported
     46                                          key character, otherwise realtime.
     47 ro.logd.timestamp        string realtime default for persist.logd.timestamp
     48 log.tag                   string persist The global logging level, VERBOSE,
     49                                          DEBUG, INFO, WARN, ERROR, ASSERT or
     50                                          SILENT. Only the first character is
     51                                          the key character.
     52 persist.log.tag            string build  default for log.tag
     53 log.tag.<tag>             string persist The <tag> specific logging level.
     54 persist.log.tag.<tag>      string build  default for log.tag.<tag>
     55 
     56 NB:
     57 - auto - managed by /init
     58 - bool+ - "true", "false" and comma separated list of "eng" (forced false if
     59   ro.debuggable is not "1") or "svelte" (forced false if ro.config.low_ram is
     60   true).
     61 - svelte - see ro.config.low_ram for details.
     62 - svelte+ - see ro.config.low_ram and ro.debuggable for details.
     63 - ro - <base property> temporary override, ro.<base property> platform default.
     64 - persist - <base property> override, persist.<base property> platform default.
     65 - build - VERBOSE for native, DEBUG for jvm isLoggable, or developer option.
     66 - number - support multipliers (K or M) for convenience. Range is limited
     67   to between 64K and 256M for log buffer sizes. Individual log buffer ids
     68   such as main, system, ... override global default.
     69 - Pruning filter is of form of a space-separated list of [~][UID][/PID]
     70   references, where '~' prefix means to blacklist otherwise whitelist. For
     71   blacklisting, UID or PID may be a '!' to instead reference the chattiest
     72   client, with the restriction that the PID must be in the UID group 1000
     73   (system or AID_SYSTEM).
     74