164         if not os.path.isdir(cachedir):

   164         if os.path.isdir(cachedir):

   165             cachedir = path

   165             checkisexec = os.path.join(cachedir, 'checkisexec')

   166         fh, fn = tempfile.mkstemp(dir=cachedir, prefix='hg-checkexec-')

   166             checknoexec = os.path.join(cachedir, 'checknoexec')

   167 

   168             try:

   169                 m = os.stat(checkisexec).st_mode

   170             except OSError as e:

   171                 if e.errno != errno.ENOENT:

   172                     raise

   173                 # checkisexec does not exist - fall through ...

   174             else:

   175                 # checkisexec exists, check if it actually is exec

   176                 if m & EXECFLAGS != 0:

   177                     # ensure checkisexec exists, check it isn't exec

   178                     try:

   179                         m = os.stat(checknoexec).st_mode

   180                     except OSError as e:

   181                         if e.errno != errno.ENOENT:

   182                             raise

   183                         file(checknoexec, 'w').close() # might fail

   184                         m = os.stat(checknoexec).st_mode

   185                     if m & EXECFLAGS == 0:

   186                         # check-exec is exec and check-no-exec is not exec

   187                         return True

   188                     # checknoexec exists but is exec - delete it

   189                     os.unlink(checknoexec)

   190                 # checkisexec exists but is not exec - delete it

   191                 os.unlink(checkisexec)

   192 

   193             # check using one file, leave it as checkisexec

   194             checkdir = cachedir

   195         else:

   196             # check directly in path and don't leave checkisexec behind

   197             checkdir = path

   198             checkisexec = None

   199         fh, fn = tempfile.mkstemp(dir=checkdir, prefix='hg-checkexec-')

   170             if m & EXECFLAGS:

   203             if m & EXECFLAGS == 0:

   171                 return False

   204                 os.chmod(fn, m & 0o777 | EXECFLAGS)

   172             os.chmod(fn, m & 0o777 | EXECFLAGS)

   205                 if os.stat(fn).st_mode & EXECFLAGS != 0:

   173             return os.stat(fn).st_mode & EXECFLAGS

   206                     if checkisexec is not None:

   207                         os.rename(fn, checkisexec)

   208                         fn = None

   209                     return True

   175             os.unlink(fn)

   211             if fn is not None:

   212                 os.unlink(fn)