Commit Graph

7 Commits

Author SHA1 Message Date
Mark Salyzyn 2ad0bd0a9b logd: Allow (some) headers to be individually importable
LogReader.h needs to be individually importable.

Fix a few others, drop includes of local includes, let them be
included in source instead and allow headers to be included
alphabetically. Was not a complete audit since goal was to
separate LogReader.h out from the pack.

Bug: 27242723
Change-Id: Ic7759ef90995e5bd285810706af33550c73cf5b5
2016-02-24 10:15:22 -08:00
Sami Tolvanen d122ee65b6 logd: enforce policy integrity
If a SELinux policy change or a switch to permissive mode is detected
on a user build, restart the device into safe mode, and keep it there
until an OTA is applied or user data is wiped.

This change deprecates the ro.logd.auditd property.

Needs matching changes from
  I781c3059ea8d4fb2f0c923e4488b1932d69678d3
  Ica825cf2af74f5624cf4091544bd24bb5482dbe7
  Id3ca7889ede30b54b7af73dd50653ca1a20d59aa

Bug: 26902605
Change-Id: Idcdc5bff133f13c1267f0ec0a75cc8cf1ddbda0d
2016-02-16 12:54:54 -08:00
Mark Salyzyn b6bee33182 liblog: logd: support logd.timestamp = monotonic
if ro.logd.timestamp or persist.logd.timestamp are set to the value
monotonic then liblog writer, liblog printing and logd all switch to
recording/printing monotonic time rather than realtime. If reinit
detects a change for presist.logd.timestamp, correct the older entry
timestamps in place.

ToDo: A corner case condition where new log entries in monotonic time
      occur before logd reinit detects persist.logd.timestamp, there
      will be a few out-of-order entries, but with accurate
      timestamps. This problem does not happen for ro.logd.timestamp
      as it is set before logd starts.

NB: This offers a nano second time accuracy on all log entries
    that may be more suitable for merging with other system
    activities, such as systrace, that also use monotonic time. This
    feature is for debugging.

Bug: 23668800
Change-Id: Iee6dab7140061b1a6627254921411f61b01aa5c2
2015-11-03 15:15:51 -08:00
Mark Salyzyn 151beac76d logd: klogd deal with nuls in dmesg
Switch to using string and length in all transactions, treating
trailing nuls the same as spaces.

ToDo: change dumpstate (bugreport) to use logcat -b printable _regardless_

Bug: 23517551
Change-Id: I42162365e6bf8ed79d356e7b689a673902116fdb
2015-09-29 15:51:38 -07:00
Mark Salyzyn eb06de716b logd: auditd remove logDmesg method
- logDmesg method consumes considerable memory
  resources (typically 128KB depending on kernel)
- In the future (eg: klogd, syslogd) there may be need to
  feed multiple logs or threads with the retrieved data.
- By moving the actions of logDmesg into the mainline that
  instantiates the thread objects, we can leverage a single
  allocation of the the kernel log allocation.
- logDmesg (private) is replaced with log (public) which
  has a more useful and descriptive purpose for the class.

Change-Id: Ie2dd0370661493c1e596a7e486904a0e8caab9ff
2014-12-05 20:56:44 +00:00
Mark Salyzyn e9bebd0eb1 logd: auditd: add logd.auditd.dmesg property
Change-Id: If4a579c2221eec99cf3f6acf59ead8c2d5230517
2014-04-07 10:51:00 -07:00
William Roberts 29d238d2a8 logd: selinux auditd initial commit
Initial commit for an audit daemon that writes kernel audit
messages to the Android logger. The daemon searches dmesg
for all lines that contain "audit" and writes them. Then
receiving the messages from the netlink socket.

It also formats the messages so they are compatable with
ausearch (type=<t> <m> format)

Modified: Mark Salyzyn <salyzyn@google.com>

- do not start auditd
- merge into logd, stripping unnecessary file logging.
- Convert headers and code to support C++
- Fix bugs in libaudit
- squash timestamp (replace with 0.0) due to duplication
- squash pid due to duplication
- squash comm due to duplication

Change-Id: I421bcf33e7e670d596628b1b5c7c25536ce2d3fe
2014-04-07 10:51:00 -07:00