error-inject

bpftime can allow you override the execution of a function in userspace, and return a value you specify, or error injection in the system call.

It's useful for testing the error handling of your program.

Run for override userspace function

server

LD_PRELOAD=~/.bpftime/libbpftime-syscall-server.so ./error_inject

client

LD_PRELOAD=~/.bpftime/libbpftime-agent.so ./victim