bpo-31904: Add support for VxWorks RTOS

Include/osdefs.h

@@ -14,6 +14,10 @@ extern "C" {
 #define DELIM L';'
 #endif
 
+#ifdef __VXWORKS__
+#define DELIM L';'
+#endif
+
 /* Filename separator */
 #ifndef SEP
 #define SEP L'/'

Lib/subprocess.py

@@ -66,7 +66,11 @@
  _mswindows = True
 except ModuleNotFoundError:
  _mswindows = False
- import _posixsubprocess
+ _vxworks = (sys.platform == "vxworks")
+ if _vxworks:
+ import _vxwapi
+ else:
+ import _posixsubprocess
  import select
  import selectors
 else:
@@ -733,6 +737,14 @@ def __init__(self, args, bufsize=-1, executable=None,
  raise ValueError("preexec_fn is not supported on Windows "
  "platforms")
  else:
+ if _vxworks:
+ if shell:
+ raise ValueError("shell is not supported on VxWorks")
+ if preexec_fn is not None:
+ raise ValueError("Preexecution function is not supported"
+ "on VxWorks");
+ if start_new_session:
+ raise ValueError("VxWorks does not support sessions");
  # POSIX
  if pass_fds and not close_fds:
  warnings.warn("pass_fds overriding close_fds.", RuntimeWarning)
@@ -1580,7 +1592,17 @@ def _execute_child(self, args, executable, preexec_fn, close_fds,
  for dir in os.get_exec_path(env))
  fds_to_keep = set(pass_fds)
  fds_to_keep.add(errpipe_write)
- self.pid = _posixsubprocess.fork_exec(
+ if _vxworks:
+ self.pid = _vxwapi.rtp_spawn(
+ args, executable_list,
+ close_fds, tuple(sorted(map(int, fds_to_keep))),
+ cwd, env_list,
+ p2cread, p2cwrite, c2pread, c2pwrite,
+ errread, errwrite,
+ errpipe_read, errpipe_write,
+ restore_signals, start_new_session, preexec_fn)
+ else:
+ self.pid = _posixsubprocess.fork_exec(
  args, executable_list,
  close_fds, tuple(sorted(map(int, fds_to_keep))),
  cwd, env_list,
@@ -1589,6 +1611,8 @@ def _execute_child(self, args, executable, preexec_fn, close_fds,
  errpipe_read, errpipe_write,
  restore_signals, start_new_session, preexec_fn)
  self._child_created = True
+ if _vxworks and self.pid == -1:
+ self._child_created = False
  finally:
  # be sure the FD is closed no matter what
  os.close(errpipe_write)

Lib/test/test_os.py

@@ -1518,7 +1518,8 @@ def mock_execve(name, *args):
  os.execve = orig_execve
  os.defpath = orig_defpath
 
-
+@unittest.skipUnless(hasattr(os, 'execv'),
+ "No os.execv or os.execve function to test.")
 class ExecTests(unittest.TestCase):
  @unittest.skipIf(USING_LINUXTHREADS,
  "avoid triggering a linuxthreads bug: see issue #4970")

Lib/test/test_time.py

@@ -88,6 +88,8 @@ def check_ns(sec, ns):
  check_ns(time.clock_gettime(time.CLOCK_REALTIME),
  time.clock_gettime_ns(time.CLOCK_REALTIME))
 
+ @unittest.skipUnless(hasattr(time, 'clock'),
+ 'need time.clock()')
  def test_clock(self):
  with self.assertWarns(DeprecationWarning):
  time.clock()
@@ -312,7 +314,13 @@ def test_ctime(self):
  self.assertEqual(time.ctime(t), 'Sun Sep 16 01:03:52 1973')
  t = time.mktime((2000, 1, 1, 0, 0, 0, 0, 0, -1))
  self.assertEqual(time.ctime(t), 'Sat Jan 1 00:00:00 2000')
- for year in [-100, 100, 1000, 2000, 2050, 10000]:
+ # the largest year on VxWorks is 2038
+ if 'vxworks' in sys.platform :
+ range = [-100, 100, 1000, 2000]
+ else:
+ range = [-100, 100, 1000, 2000, 2050, 10000]
+
+ for year in range:
  try:
  testval = time.mktime((year, 1, 10) + (0,)*6)
  except (ValueError, OverflowError):
@@ -549,8 +557,10 @@ def test_localtime_failure(self):
  self.assertRaises(ValueError, time.ctime, float("nan"))
 
  def test_get_clock_info(self):
- clocks = ['clock', 'monotonic', 'perf_counter', 'process_time', 'time']
-
+ if hasattr(time, 'clock'):
+ clocks = ['clock', 'monotonic', 'perf_counter', 'process_time', 'time']
+ else:
+ clocks = ['monotonic', 'perf_counter', 'process_time', 'time']
  for name in clocks:
  if name == 'clock':
  with self.assertWarns(DeprecationWarning):

Modules/_cryptmodule.c

@@ -4,7 +4,9 @@
 #include "Python.h"
 
 #include <sys/types.h>
-
+#ifdef __VXWORKS__
+#include <openssl/des.h>
+#endif
 /* Module crypt */
 
 /*[clinic input]
@@ -39,8 +41,12 @@ crypt_crypt_impl(PyObject *module, const char *word, const char *salt)
  struct crypt_data data;
  memset(&data, 0, sizeof(data));
  crypt_result = crypt_r(word, salt, &data);
+#else
+#ifdef __VXWORKS__
+ crypt_result = DES_crypt(word, salt);
 #else
  crypt_result = crypt(word, salt);
+#endif
 #endif
  return Py_BuildValue("s", crypt_result);
 }