5 """
6 Search in a DLL by iterates over it.
7
8 head: name of the symbol denoting the head of the DLL
9 field: the field that should be search for match
10 match: the matching value for field
11 pfield: the field whose value is to be printed for matched elements; None to
12 print all fields of the matched elemented
13 """
14
15 (symbol, _) = lookup_symbol(head)
16 if symbol is None:
17 print("Can't find symbol: " + head)
18 return
19 symbol_val = symbol.value()
20 while symbol_val:
21 symbol_val_def = symbol_val.dereference()
22 field_val = symbol_val_def[field]
23 if field_val.type.code == gdb.TYPE_CODE_INT:
25 res = (match == val)
26 elif (field_val.type.code == gdb.TYPE_CODE_STRING
27 ) or (field_val.type.code == gdb.TYPE_CODE_ARRAY):
28 val = str(field_val)
29 res = (match == val)
30 elif (field_val.type.code == gdb.TYPE_CODE_TYPEDEF):
31 val = str(field_val)
32 res = match in val
33 else:
34 continue
35
36 if res:
37 if pfield is None:
38 print(symbol_val_def)
39 else:
40 print(symbol_val_def[pfield])
41 symbol_val = symbol_val_def["next"]
def search_dll(head, field, match, pfield)