Add strerror() interface.

diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 5e247628d7b6a66edcc6390dc3969097a6ce7e1b..3069d34be788610988e8ae787793861486c33c3a 100644 (file)
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -2006,7 +2006,7 @@ static char posix_putenv__doc__[] =
 Change or add an environment variable.";
 
 static PyObject * 
-posix_putenv(self,args)
+posix_putenv(self, args)
        PyObject *self;
        PyObject *args;
 {
@@ -2026,7 +2026,32 @@ posix_putenv(self,args)
        Py_INCREF(Py_None);
         return Py_None;
 }
-#endif
+#endif /* putenv */
+
+#ifdef HAVE_STRERROR
+static char posix_strerror__doc__[] =
+"strerror(code) -> string\n\
+Translate an error code to a message string.";
+
+PyObject *
+posix_strerror(self, args)
+       PyObject *self;
+       PyObject *args;
+{
+       int code;
+       char *message;
+       if (!PyArg_ParseTuple(args, "i", &code))
+               return NULL;
+       message = strerror(code);
+       if (message == NULL) {
+               PyErr_SetString(PyExc_ValueError,
+                               "strerror code out of range");
+               return NULL;
+       }
+       return PyString_FromString(message);
+}
+#endif /* strerror */
+
 
 static PyMethodDef posix_methods[] = {
        {"chdir",       posix_chdir, 0, posix_chdir__doc__},
@@ -2151,6 +2176,9 @@ static PyMethodDef posix_methods[] = {
 #endif
 #ifdef HAVE_PUTENV
        {"putenv",      posix_putenv, 1, posix_putenv__doc__},
+#endif
+#ifdef HAVE_STRERROR
+       {"strerror",    posix_strerror, 1, posix_strerror__doc__},
 #endif
        {NULL,          NULL}            /* Sentinel */
 };