import gdb
import copy
import os
+import sys
def _string_escape_for_c(s):
out = ''
else:
return v # should already be an integer
+def parse_eval(expr):
+ sys.stderr.write("## EVAL %s\n" % repr(expr))
+ x = gdb.parse_and_eval(expr)
+ sys.stderr.write('## => %s\n' % x)
+ sys.stderr.flush()
+ return x
+
class DonorStructLayout():
def __init__(l, typename):
- x = gdb.parse_and_eval('(%s){ }' % typename)
+ x = parse_eval('(%s){ }' % typename)
l._typename = typename
l._template = [ ]
l._posns = { }
for f in x.type.fields():
l._posns[f.name] = len(l._template)
- try f.type.fields(): blank = '{ }'
+ try: f.type.fields(); blank = '{ }'
except AttributeError: blank = '0'
l._template.append(blank)
+
def substitute(l, values):
build = copy.deepcopy(l._template)
for (k,v) in values.items():
# assembling structs
# sigh, we have to record the order of the arguments!
- def di._find_fields(typename):
+ def _find_fields(typename):
try:
fields = di._structs[typename]
except AttributeError:
di._structs[typename] = fields
return fields
- def di._make(typename, values):
+ def _make(typename, values):
fields = di._find_fields(typename)
return fields.substitute(values)
def _func(di, functype, funcname, realargs):
expr = '((%s) %s) %s' % (functype, funcname, realargs)
- return gdb.parse_and_eval(expr)
+ return parse_eval(expr)
def _must_func(di, functype, funcname, realargs):
retval = di._func(functype, funcname, realargs)
if retval < 0:
- errnoval = gdb.parse_and_eval('errno')
+ errnoval = parse_eval('errno')
raise RuntimeError("%s gave errno=%d `%s'" %
(funcname, errnoval, os.strerror(errnoval)))
+ return retval
# wrappers for the syscalls that do what we want
'int (*)(int, const struct sockaddr*, socklen_t)',
'connect',
'(%d, (const struct sockaddr*)%s, sizeof(struct sockaddr_un))'
- % (fd, _lit_addressof(addr)
+ % (fd, _lit_addressof(addr))
)
def _close(di, fd):
'("%s", %d)' % (_string_escape_for_c(path), mode)
)
if r < 0:
- errnoval = gdb.parse_and_eval('errno')
+ errnoval = parse_eval('errno')
if errnoval != os.errno.EEXIST:
raise RuntimeError("mkdir %s failed: `%s'" %
(repr(path), os.strerror(errnoval)))
return 1
def _errno_save(di):
- di._saved_errno = gdb.parse_and_eval('errno')
+ di._saved_errno = parse_eval('errno')
def _errno_restore(di):
to_restore = di._saved_errno
di._saved_errno = None
if to_restore is not None:
- gdb.parse_and_eval('errno = %d' % to_restore))
+ parse_eval('errno = %d' % to_restore)
- # main entrypoints
+ def _result(di, output):
+ sys.stderr.write("#> %s" % output)
+ di._result_stream.write(output)
+ di._result_stream.flush()
- def result(di, output):
- di._result_stram.write(output)
- di._result_stram.flush()
+ # main entrypoints
def donate(di, path, control_msg):
# control_msg is an array of integers being the ancillary data
def mkdir(di, path):
try:
di._errno_save()
- val = di._mkdir(path, '0700')
+ val = di._mkdir(path, int('0700', 8))
finally:
di._errno_restore()
di._result('%d\n' % val)
def _protocol_read(di):
- return sys.stdin.readline().rstrip('\n')
+ input = sys.stdin.readline().rstrip('\n')
+ sys.stderr.write("#< %s\n" % input)
+ return input
def eval_loop(di):
while True: