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Python BPF disassembler and map layout parser #2209

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merged 7 commits into from
Feb 22, 2019
Merged

Python BPF disassembler and map layout parser #2209

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40ad17d
Python BPF disassembler and map layout parser
Feb 15, 2019
a717bd9
Disassm: return strings instead of printing
Feb 18, 2019
8c01fd4
Disassembler test
Feb 19, 2019
18bc00a
Map layout decoder test
Feb 19, 2019
f7504a7
Corrected description from disassembler test
Feb 19, 2019
caa2b2f
Use sudo to test disassembler
Feb 20, 2019
91da7d2
Fix Python 3 compatibility of disassembler test
Feb 22, 2019
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10 changes: 10 additions & 0 deletions src/python/bcc/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,7 @@
from .syscall import syscall_name
from .utils import get_online_cpus, printb, _assert_is_bytes, ArgString
from .version import __version__
from .disassembler import disassemble_prog, decode_map

_probe_limit = 1000
_num_open_probes = 0
Expand Down Expand Up @@ -400,6 +401,15 @@ def dump_func(self, func_name):
size, = lib.bpf_function_size(self.module, func_name),
return ct.string_at(start, size)

def disassemble_func(self, func_name):
bpfstr = self.dump_func(func_name)
return disassemble_prog(func_name, bpfstr)

def decode_table(self, table_name, sizeinfo=False):
table_obj = self[table_name]
table_type = lib.bpf_table_type_id(self.module, table_obj.map_id)
return decode_map(table_name, table_obj, table_type, sizeinfo=sizeinfo)

str2ctype = {
u"_Bool": ct.c_bool,
u"char": ct.c_char,
Expand Down
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