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# Copyright 2015 PLUMgrid
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import ctypes as ct
lib = ct.CDLL("libbcc.so.0", use_errno=True)
# needed for perf_event_attr() ctype
from .perf import Perf
# keep in sync with bcc_common.h
lib.bpf_module_create_c.restype = ct.c_void_p
lib.bpf_module_create_c.argtypes = [ct.c_char_p, ct.c_uint,
ct.POINTER(ct.c_char_p), ct.c_int, ct.c_bool, ct.c_char_p]
lib.bpf_module_create_c_from_string.restype = ct.c_void_p
lib.bpf_module_create_c_from_string.argtypes = [ct.c_char_p, ct.c_uint,
ct.POINTER(ct.c_char_p), ct.c_int, ct.c_bool, ct.c_char_p]
lib.bpf_module_rw_engine_enabled.restype = ct.c_bool
lib.bpf_module_rw_engine_enabled.argtypes = None
lib.bpf_module_destroy.restype = None
lib.bpf_module_destroy.argtypes = [ct.c_void_p]
lib.bpf_module_license.restype = ct.c_char_p
lib.bpf_module_license.argtypes = [ct.c_void_p]
lib.bpf_module_kern_version.restype = ct.c_uint
lib.bpf_module_kern_version.argtypes = [ct.c_void_p]
lib.bpf_num_functions.restype = ct.c_ulonglong
lib.bpf_num_functions.argtypes = [ct.c_void_p]
lib.bpf_function_name.restype = ct.c_char_p
lib.bpf_function_name.argtypes = [ct.c_void_p, ct.c_ulonglong]
lib.bpf_function_start.restype = ct.c_void_p
lib.bpf_function_start.argtypes = [ct.c_void_p, ct.c_char_p]
lib.bpf_function_size.restype = ct.c_size_t
lib.bpf_function_size.argtypes = [ct.c_void_p, ct.c_char_p]
lib.bpf_table_id.restype = ct.c_ulonglong
lib.bpf_table_id.argtypes = [ct.c_void_p, ct.c_char_p]
lib.bpf_table_fd.restype = ct.c_int
lib.bpf_table_fd.argtypes = [ct.c_void_p, ct.c_char_p]
lib.bpf_table_type_id.restype = ct.c_int
lib.bpf_table_type_id.argtypes = [ct.c_void_p, ct.c_ulonglong]
lib.bpf_table_max_entries_id.restype = ct.c_ulonglong
lib.bpf_table_max_entries_id.argtypes = [ct.c_void_p, ct.c_ulonglong]
lib.bpf_table_flags_id.restype = ct.c_int
lib.bpf_table_flags_id.argtypes = [ct.c_void_p, ct.c_ulonglong]
lib.bpf_table_key_desc.restype = ct.c_char_p
lib.bpf_table_key_desc.argtypes = [ct.c_void_p, ct.c_char_p]
lib.bpf_table_leaf_desc.restype = ct.c_char_p
lib.bpf_table_leaf_desc.argtypes = [ct.c_void_p, ct.c_char_p]
lib.bpf_table_key_snprintf.restype = ct.c_int
lib.bpf_table_key_snprintf.argtypes = [ct.c_void_p, ct.c_ulonglong,
ct.c_char_p, ct.c_ulonglong, ct.c_void_p]
lib.bpf_table_leaf_snprintf.restype = ct.c_int
lib.bpf_table_leaf_snprintf.argtypes = [ct.c_void_p, ct.c_ulonglong,
ct.c_char_p, ct.c_ulonglong, ct.c_void_p]
lib.bpf_table_key_sscanf.restype = ct.c_int
lib.bpf_table_key_sscanf.argtypes = [ct.c_void_p, ct.c_ulonglong,
ct.c_char_p, ct.c_void_p]
lib.bpf_table_leaf_sscanf.restype = ct.c_int
lib.bpf_table_leaf_sscanf.argtypes = [ct.c_void_p, ct.c_ulonglong,
ct.c_char_p, ct.c_void_p]
lib.bpf_perf_event_fields.restype = ct.c_ulonglong
lib.bpf_perf_event_fields.argtypes = [ct.c_void_p, ct.c_char_p]
lib.bpf_perf_event_field.restype = ct.c_char_p
lib.bpf_perf_event_field.argtypes = [ct.c_void_p, ct.c_char_p, ct.c_ulonglong]
# keep in sync with libbpf.h
lib.bpf_get_next_key.restype = ct.c_int
lib.bpf_get_next_key.argtypes = [ct.c_int, ct.c_void_p, ct.c_void_p]
lib.bpf_get_first_key.restype = ct.c_int
lib.bpf_get_first_key.argtypes = [ct.c_int, ct.c_void_p, ct.c_uint]
lib.bpf_lookup_elem.restype = ct.c_int
lib.bpf_lookup_elem.argtypes = [ct.c_int, ct.c_void_p, ct.c_void_p]
lib.bpf_update_elem.restype = ct.c_int
lib.bpf_update_elem.argtypes = [ct.c_int, ct.c_void_p, ct.c_void_p,
ct.c_ulonglong]
lib.bpf_delete_elem.restype = ct.c_int
lib.bpf_delete_elem.argtypes = [ct.c_int, ct.c_void_p]
lib.bpf_delete_batch.restype = ct.c_int
lib.bpf_delete_batch.argtypes = [ct.c_int, ct.c_void_p, ct.c_void_p]
lib.bpf_update_batch.restype = ct.c_int
lib.bpf_update_batch.argtypes = [ct.c_int, ct.c_void_p, ct.c_void_p,
ct.POINTER(ct.c_uint32)]
lib.bpf_lookup_batch.restype = ct.c_int
lib.bpf_lookup_batch.argtypes = [ct.c_int, ct.POINTER(ct.c_uint32),
ct.POINTER(ct.c_uint32), ct.c_void_p, ct.c_void_p, ct.c_void_p]
lib.bpf_lookup_and_delete_batch.restype = ct.c_int
lib.bpf_lookup_and_delete_batch.argtypes = [ct.c_int, ct.POINTER(ct.c_uint32),
ct.POINTER(ct.c_uint32), ct.c_void_p, ct.c_void_p, ct.c_void_p]
lib.bpf_open_raw_sock.restype = ct.c_int
lib.bpf_open_raw_sock.argtypes = [ct.c_char_p]
lib.bpf_attach_socket.restype = ct.c_int
lib.bpf_attach_socket.argtypes = [ct.c_int, ct.c_int]
lib.bcc_func_load.restype = ct.c_int
lib.bcc_func_load.argtypes = [ct.c_void_p, ct.c_int, ct.c_char_p, ct.c_void_p,
ct.c_size_t, ct.c_char_p, ct.c_uint, ct.c_int, ct.c_char_p, ct.c_uint, ct.c_char_p, ct.c_uint]
_RAW_CB_TYPE = ct.CFUNCTYPE(None, ct.py_object, ct.c_void_p, ct.c_int)
_LOST_CB_TYPE = ct.CFUNCTYPE(None, ct.py_object, ct.c_ulonglong)
lib.bpf_attach_kprobe.restype = ct.c_int
lib.bpf_attach_kprobe.argtypes = [ct.c_int, ct.c_int, ct.c_char_p, ct.c_char_p,
ct.c_ulonglong, ct.c_int]
lib.bpf_detach_kprobe.restype = ct.c_int
lib.bpf_detach_kprobe.argtypes = [ct.c_char_p]
lib.bpf_attach_uprobe.restype = ct.c_int
lib.bpf_attach_uprobe.argtypes = [ct.c_int, ct.c_int, ct.c_char_p, ct.c_char_p,
ct.c_ulonglong, ct.c_int]
lib.bpf_detach_uprobe.restype = ct.c_int
lib.bpf_detach_uprobe.argtypes = [ct.c_char_p]
lib.bpf_attach_tracepoint.restype = ct.c_int
lib.bpf_attach_tracepoint.argtypes = [ct.c_int, ct.c_char_p, ct.c_char_p]
lib.bpf_detach_tracepoint.restype = ct.c_int
lib.bpf_detach_tracepoint.argtypes = [ct.c_char_p, ct.c_char_p]
lib.bpf_attach_raw_tracepoint.restype = ct.c_int
lib.bpf_attach_raw_tracepoint.argtypes = [ct.c_int, ct.c_char_p]
lib.bpf_attach_kfunc.restype = ct.c_int
lib.bpf_attach_kfunc.argtypes = [ct.c_int]
lib.bpf_attach_lsm.restype = ct.c_int
lib.bpf_attach_lsm.argtypes = [ct.c_int]
lib.bpf_prog_attach.restype = ct.c_int
lib.bpf_prog_attach.argtype = [ct.c_int, ct.c_int, ct.c_int, ct.c_uint]
lib.bpf_prog_detach2.restype = ct.c_int
lib.bpf_prog_detach2.argtype = [ct.c_int, ct.c_int, ct.c_int]
lib.bpf_has_kernel_btf.restype = ct.c_bool
lib.bpf_has_kernel_btf.argtypes = None
lib.kernel_struct_has_field.restype = ct.c_int
lib.kernel_struct_has_field.argtypes = [ct.c_char_p, ct.c_char_p]
lib.bpf_open_perf_buffer.restype = ct.c_void_p
lib.bpf_open_perf_buffer.argtypes = [_RAW_CB_TYPE, _LOST_CB_TYPE, ct.py_object, ct.c_int, ct.c_int, ct.c_int]
class bcc_perf_buffer_opts(ct.Structure):
_fields_ = [
('pid', ct.c_int),
('cpu', ct.c_int),
('wakeup_events', ct.c_int),
]
lib.bpf_open_perf_buffer_opts.restype = ct.c_void_p
lib.bpf_open_perf_buffer_opts.argtypes = [_RAW_CB_TYPE, _LOST_CB_TYPE, ct.py_object, ct.c_int, ct.POINTER(bcc_perf_buffer_opts)]
lib.bpf_open_perf_event.restype = ct.c_int
lib.bpf_open_perf_event.argtypes = [ct.c_uint, ct.c_ulonglong, ct.c_int, ct.c_int]
lib.perf_reader_poll.restype = ct.c_int
lib.perf_reader_poll.argtypes = [ct.c_int, ct.POINTER(ct.c_void_p), ct.c_int]
lib.perf_reader_consume.restype = ct.c_int
lib.perf_reader_consume.argtypes = [ct.c_int, ct.POINTER(ct.c_void_p)]
lib.perf_reader_free.restype = None
lib.perf_reader_free.argtypes = [ct.c_void_p]
lib.perf_reader_fd.restype = int
lib.perf_reader_fd.argtypes = [ct.c_void_p]
lib.bpf_attach_xdp.restype = ct.c_int
lib.bpf_attach_xdp.argtypes = [ct.c_char_p, ct.c_int, ct.c_uint]
lib.bpf_attach_perf_event.restype = ct.c_int
lib.bpf_attach_perf_event.argtype = [ct.c_int, ct.c_uint, ct.c_uint, ct.c_ulonglong, ct.c_ulonglong,
ct.c_int, ct.c_int, ct.c_int]
lib.bpf_attach_perf_event_raw.restype = ct.c_int
lib.bpf_attach_perf_event_raw.argtype = [Perf.perf_event_attr(), ct.c_uint, ct.c_uint, ct.c_uint, ct.c_uint]
lib.bpf_close_perf_event_fd.restype = ct.c_int
lib.bpf_close_perf_event_fd.argtype = [ct.c_int]
_RINGBUF_CB_TYPE = ct.CFUNCTYPE(ct.c_int, ct.c_void_p, ct.c_void_p, ct.c_int)
lib.bpf_new_ringbuf.restype = ct.c_void_p
lib.bpf_new_ringbuf.argtypes = [ct.c_int, _RINGBUF_CB_TYPE, ct.c_void_p]
lib.bpf_free_ringbuf.restype = None
lib.bpf_free_ringbuf.argtypes = [ct.c_void_p]
lib.bpf_add_ringbuf.restype = ct.c_int
lib.bpf_add_ringbuf.argtypes = [ct.c_void_p, ct.c_int, _RINGBUF_CB_TYPE, ct.c_void_p]
lib.bpf_poll_ringbuf.restype = ct.c_int
lib.bpf_poll_ringbuf.argtypes = [ct.c_void_p, ct.c_int]
lib.bpf_consume_ringbuf.restype = ct.c_int
lib.bpf_consume_ringbuf.argtypes = [ct.c_void_p]
# bcc symbol helpers
class bcc_symbol(ct.Structure):
_fields_ = [
('name', ct.c_char_p),
('demangle_name', ct.c_char_p),
('module', ct.POINTER(ct.c_char)),
('offset', ct.c_ulonglong),
]
class bcc_ip_offset_union(ct.Union):
_fields_ = [
('offset', ct.c_uint64),
('ip', ct.c_uint64)
]
class bcc_stacktrace_build_id(ct.Structure):
_fields_ = [
('status', ct.c_uint32),
('build_id',ct.c_ubyte*20),
('u',bcc_ip_offset_union)
]
class bcc_symbol_option(ct.Structure):
_fields_ = [
('use_debug_file', ct.c_int),
('check_debug_file_crc', ct.c_int),
('lazy_symbolize', ct.c_int),
('use_symbol_type', ct.c_uint),
]
lib.bcc_procutils_which_so.restype = ct.POINTER(ct.c_char)
lib.bcc_procutils_which_so.argtypes = [ct.c_char_p, ct.c_int]
lib.bcc_procutils_free.restype = None
lib.bcc_procutils_free.argtypes = [ct.c_void_p]
lib.bcc_procutils_language.restype = ct.POINTER(ct.c_char)
lib.bcc_procutils_language.argtypes = [ct.c_int]
lib.bcc_resolve_symname.restype = ct.c_int
lib.bcc_resolve_symname.argtypes = [
ct.c_char_p, ct.c_char_p, ct.c_ulonglong, ct.c_int, ct.POINTER(bcc_symbol_option), ct.POINTER(bcc_symbol)]
_SYM_CB_TYPE = ct.CFUNCTYPE(ct.c_int, ct.c_char_p, ct.c_ulonglong)
lib.bcc_foreach_function_symbol.restype = ct.c_int
lib.bcc_foreach_function_symbol.argtypes = [ct.c_char_p, _SYM_CB_TYPE]
lib.bcc_symcache_new.restype = ct.c_void_p
lib.bcc_symcache_new.argtypes = [ct.c_int, ct.POINTER(bcc_symbol_option)]
lib.bcc_free_symcache.restype = ct.c_void_p
lib.bcc_free_symcache.argtypes = [ct.c_void_p, ct.c_int]
lib.bcc_buildsymcache_new.restype = ct.c_void_p
lib.bcc_buildsymcache_new.argtypes = None
lib.bcc_free_buildsymcache.restype = None
lib.bcc_free_buildsymcache.argtypes = [ct.c_void_p]
lib.bcc_buildsymcache_add_module.restype = ct.c_int
lib.bcc_buildsymcache_add_module.argtypes = [ct.c_void_p, ct.c_char_p]
lib.bcc_buildsymcache_resolve.restype = ct.c_int
lib.bcc_buildsymcache_resolve.argtypes = [ct.c_void_p, ct.POINTER(bcc_stacktrace_build_id), ct.POINTER(bcc_symbol)]
lib.bcc_symbol_free_demangle_name.restype = ct.c_void_p
lib.bcc_symbol_free_demangle_name.argtypes = [ct.POINTER(bcc_symbol)]
lib.bcc_symcache_resolve.restype = ct.c_int
lib.bcc_symcache_resolve.argtypes = [ct.c_void_p, ct.c_ulonglong, ct.POINTER(bcc_symbol)]
lib.bcc_symcache_resolve_no_demangle.restype = ct.c_int
lib.bcc_symcache_resolve_no_demangle.argtypes = [ct.c_void_p, ct.c_ulonglong, ct.POINTER(bcc_symbol)]
lib.bcc_symcache_resolve_name.restype = ct.c_int
lib.bcc_symcache_resolve_name.argtypes = [
ct.c_void_p, ct.c_char_p, ct.c_char_p, ct.POINTER(ct.c_ulonglong)]
lib.bcc_symcache_refresh.restype = None
lib.bcc_symcache_refresh.argtypes = [ct.c_void_p]
lib.bcc_free_memory.restype = ct.c_int
lib.bcc_free_memory.argtypes = None
lib.bcc_usdt_new_frompid.restype = ct.c_void_p
lib.bcc_usdt_new_frompid.argtypes = [ct.c_int, ct.c_char_p]
lib.bcc_usdt_new_frompath.restype = ct.c_void_p
lib.bcc_usdt_new_frompath.argtypes = [ct.c_char_p]
lib.bcc_usdt_close.restype = None
lib.bcc_usdt_close.argtypes = [ct.c_void_p]
lib.bcc_usdt_enable_probe.restype = ct.c_int
lib.bcc_usdt_enable_probe.argtypes = [ct.c_void_p, ct.c_char_p, ct.c_char_p]
lib.bcc_usdt_enable_fully_specified_probe.restype = ct.c_int
lib.bcc_usdt_enable_fully_specified_probe.argtypes = [ct.c_void_p, ct.c_char_p, ct.c_char_p, ct.c_char_p]
lib.bcc_usdt_genargs.restype = ct.c_char_p
lib.bcc_usdt_genargs.argtypes = [ct.POINTER(ct.c_void_p), ct.c_int]
lib.bcc_usdt_get_probe_argctype.restype = ct.c_char_p
lib.bcc_usdt_get_probe_argctype.argtypes = [ct.c_void_p, ct.c_char_p, ct.c_int]
lib.bcc_usdt_get_fully_specified_probe_argctype.restype = ct.c_char_p
lib.bcc_usdt_get_fully_specified_probe_argctype.argtypes = [ct.c_void_p, ct.c_char_p, ct.c_char_p, ct.c_int]
class bcc_usdt(ct.Structure):
_fields_ = [
('provider', ct.c_char_p),
('name', ct.c_char_p),
('bin_path', ct.c_char_p),
('semaphore', ct.c_ulonglong),
('num_locations', ct.c_int),
('num_arguments', ct.c_int),
]
class bcc_usdt_location(ct.Structure):
_fields_ = [
('address', ct.c_ulonglong),
('bin_path', ct.c_char_p),
]
class BCC_USDT_ARGUMENT_FLAGS(object):
NONE = 0x0
CONSTANT = 0x1
DEREF_OFFSET = 0x2
DEREF_IDENT = 0x4
BASE_REGISTER_NAME = 0x8
INDEX_REGISTER_NAME = 0x10
SCALE = 0x20
class bcc_usdt_argument(ct.Structure):
_fields_ = [
('size', ct.c_int),
('valid', ct.c_int),
('constant', ct.c_longlong),
('deref_offset', ct.c_int),
('deref_ident', ct.c_char_p),
('base_register_name', ct.c_char_p),
('index_register_name', ct.c_char_p),
('scale', ct.c_int)
]
_USDT_CB = ct.CFUNCTYPE(None, ct.POINTER(bcc_usdt))
lib.bcc_usdt_foreach.restype = None
lib.bcc_usdt_foreach.argtypes = [ct.c_void_p, _USDT_CB]
lib.bcc_usdt_get_location.restype = ct.c_int
lib.bcc_usdt_get_location.argtypes = [ct.c_void_p, ct.c_char_p, ct.c_char_p, ct.c_int,
ct.POINTER(bcc_usdt_location)]
lib.bcc_usdt_get_argument.restype = ct.c_int
lib.bcc_usdt_get_argument.argtypes = [ct.c_void_p, ct.c_char_p, ct.c_char_p, ct.c_int,
ct.c_int, ct.POINTER(bcc_usdt_argument)]
_USDT_PROBE_CB = ct.CFUNCTYPE(None, ct.c_char_p, ct.c_char_p,
ct.c_ulonglong, ct.c_int)
lib.bcc_usdt_foreach_uprobe.restype = None
lib.bcc_usdt_foreach_uprobe.argtypes = [ct.c_void_p, _USDT_PROBE_CB]