-agentpath: libraries require no path/name decoration

[JasonFengJ9]

-agentpath: libraries require no path/name decoration

The agent library specified via -agentpath: has an absolute path/name, it should not be decorated again during the agent library loading;
For -agentpath: option in the restore option file, compare the actual platform-dependent library name.

Related

• CRIU supports Java debugger via the restore option file #19754

closes #20194

Signed-off-by: Jason Feng [email protected]

[gacholio]

I still think this is the wrong way to do this. Check for JVMTI capabilities, not a specific library name.

[JasonFengJ9]

I still think this is the wrong way to do this. Check for JVMTI capabilities, not a specific library name.

This is a CRIU-specific use case, there is no JDWP debug agent specified pre-checkpoint, post-restore the user would like to enable debugging via a command line option in the restore option file such as

• -Xrunjdwp:transport=dt_socket,server=y,suspend=y
• -agentlib:jdwp=transport=dt_socket,server=y,suspend=y
• -agentpath:/path/to/libjdwp.so=transport=dt_socket,server=y,suspend=n

These agent platform dependent/independent names are the only input available at CRIU restore stage.

[JasonFengJ9]

For another CRIU case, the JDWP agent is specified pre-checkpoint which will enable debug support post-restore, the library name-checking GAC referred could be replaced with JVMTI capabilities which is to be addressed w/ #20204

[keithc-ca]

Jenkins test sanity xlinux jdk21

[keithc-ca]

I believe the sanity.functional failures are due to a mismatch between the JDK and the tests (since #19872 was merged).