History log of /bionic/linker/linker_logger.h
Revision Date Author Comments
9e27e58faa6ff08efbe85fc62943d483ecfed61a 24-Mar-2017 Elliott Hughes <enh@google.com> Add support for disabling the greylist.

Useful for testing whether apps have actually stopped using greylisted
libraries even if they still have references to them in their apk to support
old Android releases but also haven't bumped their targetSdkVersion yet.

Since we already have two expensive __system_property_get calls and this
would add a third, optimize two (but leave the third since it's not
obviously amenable to optimization). None of this matters for user builds,
but I don't want userdebug/eng to have distractingly different performance.

(cherrypick of 7933bec2872aa1c3430149c7649726333c0ac9d8.)

Bug: http://b/36106661
Test: ran "can you escape 5" with and without this property
Change-Id: Id9a804695c1dca9b4be2ebd0e72f01817bb13cba
7933bec2872aa1c3430149c7649726333c0ac9d8 24-Mar-2017 Elliott Hughes <enh@google.com> Add support for disabling the greylist.

Useful for testing whether apps have actually stopped using greylisted
libraries even if they still have references to them in their apk to support
old Android releases but also haven't bumped their targetSdkVersion yet.

Since we already have two expensive __system_property_get calls and this
would add a third, optimize two (but leave the third since it's not
obviously amenable to optimization). None of this matters for user builds,
but I don't want userdebug/eng to have distractingly different performance.

Bug: http://b/36106661
Test: ran "can you escape 5" with and without this property
Change-Id: Id9a804695c1dca9b4be2ebd0e72f01817bb13cba
5c4a58072fad88a2ab89cfe063dd217041491357 18-Mar-2017 Dimitry Ivanov <dimitry@google.com> Add systrace output for dlopen calls

Bug: http://b/27195126
Test: manual: adb shell atrace -t 5 bionic
and run bionic-unit-tests --gtest_filter=dl*:Dl*

Change-Id: Ib2bad794e571b89bd1f52c9e0de642c2092e5c21
4742abdcb52f16120016a5005c466230d4c46341 13-Dec-2016 Dimitry Ivanov <dimitry@google.com> Add a way to track all dlsym calls

Add dlsym option to debug.ld.all and debug.ld.app.<appname> which
enables logging of dlsym calls.

Bug: http://b/29458203
Test: flash, set debug.ld.all to dlsym and check
if there are messages in logcat

Change-Id: I9cb815a38b5b98aac9ebe3ac1540bcdedd2e8db0
554374693408cd7c74d0cae596fca7349661edea 21-Jul-2016 Dimitry Ivanov <dimitry@google.com> Pass argc/argv/envp to dso constructors

The glibc implementation of the loader passes argc/argv/envp
to all elf constructors. This change makes bionic linker
behave in the same way.

Bug: http://b/30145768
Change-Id: I1c65c42aa5305a5b133c64b5748205bbde869e0e
Test: run bionic-unit-tests --gtest_filter=dl*:Dl*
b996d60493a2e501655f23523b31fe34a63edd5c 12-Jul-2016 Dimitry Ivanov <dimitry@google.com> linker: Enable debug logging via properties

This patch lets developers tune logging of dlopen/dlerror with
setting system property.

Note that for security purposes this option is disabled on user build
for non-debuggable apps.

For starters there are 3 debug options:
dlerror - enables logging of all dlerrors
dlopen - traces dlopen calls

To enable system-wide logging (works only for userdebug/eng builds)
use debug.ld.all property.

To enable logging for particular app use debug.ld.app.<appname> property.

Example: Running "adb shell setprop debug.ld.all dlerror,dlopen" will log all
dlerror message as well as trace all calls to dlopen.

Bug: http://b/29458203
Change-Id: I2392c80a795509e16fe5689d0500d18b99772a64