Merge pull request #9 from pythonbpf/refactor

Cleanup and rename examples

Author: varun-r-mallya

examples/pybpf3.py examples/binops_demo.pyexamples/pybpf3.py renamed to examples/binops_demo.py

@@ -6,8 +6,8 @@
 
 # Instructions to how to run this program
 # 1. Install PythonBPF: pip install pythonbpf
-# 2. Run the program: python demo/pybpf3.py
-# 3. Run the program with sudo: sudo examples/check.sh run demo/pybpf3.o
+# 2. Run the program: python examples/binops_demo.py
+# 3. Run the program with sudo: sudo tools/check.sh run examples/binops_demo.py
 # 4. Start up any program and watch the output
 
 @bpf

examples/execve4.py examples/blk_request.pyexamples/execve4.py renamed to examples/blk_request.py

@@ -12,7 +12,7 @@
 # and then plots the distribution as a histogram using matplotlib.
 # It provides a quick view of process creation activity over 10 seconds.
 # Everything is done with Python only code and with the new pylibbpf library.
-# Run `sudo /path/to/python/binary/ pybpf4.py`
+# Run `sudo /path/to/python/binary/ clone_plot.py`
 
 @bpf
 @map

examples/pybpf4.py examples/clone_plot.pyexamples/pybpf4.py renamed to examples/clone_plot.py

@@ -1,11 +1,9 @@
-from pythonbpf import bpf, section, bpfglobal, compile
-
+from pythonbpf import bpf, section, bpfglobal, compile, BPF
 from ctypes import c_void_p, c_int64
 
 # Instructions to how to run this program
 # 1. Install PythonBPF: pip install pythonbpf
-# 2. Run the program: python demo/pybpf0.py
-# 3. Run the program with sudo: sudo examples/check.sh run demo/pybpf0.o
+# 2. Run the program: sudo python examples/hello_world.py
 # 4. Start up any program and watch the output
 
 
@@ -20,4 +18,11 @@ def hello_world(ctx: c_void_p) -> c_int64:
 def LICENSE() -> str:
     return "GPL"
 
-compile()
+b = BPF()
+b.load_and_attach()
+if b.is_loaded() and b.is_attached():
+    print("Successfully loaded and attached")
+else:
+    print("Could not load successfully")
+
+# Now cat /sys/kernel/debug/tracing/trace_pipe to see results of the execve syscall.

examples/execve2.py

@@ -6,8 +6,8 @@
 
 # Instructions to how to run this program
 # 1. Install PythonBPF: pip install pythonbpf
-# 2. Run the program: python demo/pybpf2.py
-# 3. Run the program with sudo: sudo examples/check.sh run demo/pybpf2.o
+# 2. Run the program: python examples/sys_sync.py
+# 3. Run the program with sudo: sudo tools/check.sh run examples/sys_sync.o
 # 4. Start a Python repl and `import os` and then keep entering `os.sync()` to see reponses.
 
 @bpf

examples/execve3.py

@@ -6,9 +6,9 @@
 
 # Instructions to how to run this program
 # 1. Install PythonBPF: pip install pythonbpf
-# 2. Run the program: python demo/pybpf1.py
-# 3. Run the program with sudo: sudo examples/check.sh run demo/pybpf1.o
-# 4. Attach object file to any network device with something like ./check.sh xdp ../demo/pybpf1.o tailscale0
+# 2. Run the program: python examples/xdp_pass.py
+# 3. Run the program with sudo: sudo tools/check.sh run examples/xdp_pass.o
+# 4. Attach object file to any network device with something like ./check.sh xdp examples/xdp_pass.o tailscale0
 # 5. send traffic through the device and observe effects
 
 @bpf

examples/pybpf0.py examples/hello_world.pyexamples/pybpf0.py renamed to examples/hello_world.py

@@ -219,6 +219,7 @@ def bpf_printk_emitter(call, map_ptr, module, builder, func, local_sym_tab=None,
 
             builder.call(fn_ptr, [fmt_ptr, ir.Constant(
                 ir.IntType(32), len(fmt_str))], tail=True)
+    return None
 
 
 def bpf_map_update_elem_emitter(call, map_ptr, module, builder, func, local_sym_tab=None, struct_sym_tab=None, local_var_metadata=None):
@@ -496,3 +497,4 @@ def handle_helper_call(call, module, builder, func, local_sym_tab=None, map_sym_
         else:
             raise NotImplementedError(
                 "Attribute not supported for map method calls.")
+    return None