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1.1 KiB
1.1 KiB
wrapagentproperties
wrapagentproperties is a JVMTI agent that lets one change the returned values of an agents GetSystemPropert{y,ies} calls.
Usage
Build
m libwrapagentproperties# or 'm libwrapagentpropertiesd' with debugging checks enabled
The libraries will be built for 32-bit, 64-bit, host and target. Below examples assume you want to use the 64-bit version.
Command Line
ART
art -Xplugin:$ANDROID_HOST_OUT/lib64/libopenjdkjvmti.so -agentpath:$ANDROID_HOST_OUT/lib64/libwrapagentproperties.so=/path/to/prop.file,/path/to/agent=agent-args -cp tmp/java/helloworld.dex -Xint helloworld
-Xpluginand-agentpathneed to be used, otherwise libtitrace agent will fail during init.- If using
libartd.so, make sure to use the debug version of jvmti.
prop file format.
The property file is a text file containing the values of java properties you wish to override. The format is property=value on each line. Blank lines and lines beginning with "#" are ignored.
Example prop file
# abc.prop
abc.def=123
def.hij=a big deal