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https://github.com/varun-r-mallya/Python-BPF.git
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43 lines
946 B
Python
43 lines
946 B
Python
import pythonbpf as pb
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from pythonbpf.helpers import bpf_ktime_get_ns
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from pythonbpf.maps import HashMap
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from ctypes import c_void_p, c_int64, c_int32, c_uint64
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@pb.bpf
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@pb.map
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def last() -> HashMap:
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return HashMap(key_type=c_uint64, value_type=c_uint64, max_entries=1)
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@pb.bpf
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@pb.section("tracepoint/syscalls/sys_enter_execve")
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def hello(ctx: c_void_p) -> c_int32:
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print("entered")
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print("multi constant support")
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return c_int32(0)
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@pb.bpf
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@pb.section("tracepoint/syscalls/sys_exit_execve")
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def hello_again(ctx: c_void_p) -> c_int64:
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print("exited")
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key = 0
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tsp = last().lookup(key)
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if tsp:
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delta = (bpf_ktime_get_ns() - tsp.value)
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if delta < 1000000000:
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print("execve called within last second")
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last().delete(key)
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ts = bpf_ktime_get_ns()
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last().update(key, ts)
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return c_int64(0)
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@pb.bpf
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@pb.bpfglobal
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def LICENSE() -> str:
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return "GPL"
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pb.compile()
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