comparison mercurial/osutil.c @ 27970:3d23700cf4a9 stable

osutil: disable compilation of recvfds() on unsupported platforms

It appears that Solaris doesn't provide CMSG_LEN(), msg_control, etc. As
recvfds() is only necessary for chg, this patch just drops it if CMSG_LEN
isn't defined, which is the same workaround as Python 3.x.

https://hg.python.org/cpython/rev/c64216addd7f#l7.33

27969:5907ed2b56fb

}

/*
 * recvfds() simply does not release GIL during blocking io operation because
 * command server is known to be single-threaded.
 */

static ssize_t recvfdstobuf(int sockfd, int **rfds, void *cbuf, size_t cbufsize)
{
	char dummy[1];
	struct iovec iov = {dummy, sizeof(dummy)};

bail:
	Py_XDECREF(rfdslist);
	return NULL;
}

#endif /* ndef _WIN32 */

static PyObject *listdir(PyObject *self, PyObject *args, PyObject *kwargs)
{
	PyObject *statobj = NULL; /* initialize - optional arg */

"On error, this function may raise either a WindowsError or an IOError."},
#else
	{"statfiles", (PyCFunction)statfiles, METH_VARARGS | METH_KEYWORDS,
	 "stat a series of files or symlinks\n"
"Returns None for non-existent entries and entries of other types.\n"},
	{"recvfds", (PyCFunction)recvfds, METH_VARARGS,
	 "receive list of file descriptors via socket\n"},
#endif
#ifdef __APPLE__
	{
		"isgui", (PyCFunction)isgui, METH_NOARGS,
		"Is a CoreGraphics session available?"

27970:3d23700cf4a9

}

/*
 * recvfds() simply does not release GIL during blocking io operation because
 * command server is known to be single-threaded.
 *
 * Old systems such as Solaris don't provide CMSG_LEN, msg_control, etc.
 * Currently, recvfds() is not supported on these platforms.
 */
#ifdef CMSG_LEN

static ssize_t recvfdstobuf(int sockfd, int **rfds, void *cbuf, size_t cbufsize)
{
	char dummy[1];
	struct iovec iov = {dummy, sizeof(dummy)};

bail:
	Py_XDECREF(rfdslist);
	return NULL;
}

#endif /* CMSG_LEN */
#endif /* ndef _WIN32 */

static PyObject *listdir(PyObject *self, PyObject *args, PyObject *kwargs)
{
	PyObject *statobj = NULL; /* initialize - optional arg */

"On error, this function may raise either a WindowsError or an IOError."},
#else
	{"statfiles", (PyCFunction)statfiles, METH_VARARGS | METH_KEYWORDS,
	 "stat a series of files or symlinks\n"
"Returns None for non-existent entries and entries of other types.\n"},
#ifdef CMSG_LEN
	{"recvfds", (PyCFunction)recvfds, METH_VARARGS,
	 "receive list of file descriptors via socket\n"},
#endif
#endif
#ifdef __APPLE__
	{
		"isgui", (PyCFunction)isgui, METH_NOARGS,
		"Is a CoreGraphics session available?"