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Start work on socket based prewarm

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Kovid Goyal
2022-06-13 21:34:49 +05:30
parent 7a31c7ff50
commit b222ab1bf6
3 changed files with 195 additions and 20 deletions
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10
kitty/child.c
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@@ -186,17 +186,17 @@ spawn(PyObject *self UNUSED, PyObject *args) {
static PyObject*
establish_controlling_tty(PyObject *self UNUSED, PyObject *args) {
const char *ttyname;
int stdin_fd, stdout_fd, stderr_fd;
if (!PyArg_ParseTuple(args, "siii", &ttyname, &stdin_fd, &stdout_fd, &stderr_fd)) return NULL;
int stdin_fd = -1, stdout_fd = -1, stderr_fd = -1;
if (!PyArg_ParseTuple(args, "s|iii", &ttyname, &stdin_fd, &stdout_fd, &stderr_fd)) return NULL;
int tfd = safe_open(ttyname, O_RDWR, 0);
if (tfd == -1) return PyErr_SetFromErrnoWithFilename(PyExc_OSError, ttyname);
#ifdef TIOCSCTTY
// On BSD open() does not establish the controlling terminal
if (ioctl(tfd, TIOCSCTTY, 0) == -1) return PyErr_SetFromErrno(PyExc_OSError);
#endif
if (dup2(tfd, stdin_fd) == -1) return PyErr_SetFromErrno(PyExc_OSError);
if (dup2(tfd, stdout_fd) == -1) return PyErr_SetFromErrno(PyExc_OSError);
if (dup2(tfd, stderr_fd) == -1) return PyErr_SetFromErrno(PyExc_OSError);
if (stdin_fd > -1 && dup2(tfd, stdin_fd) == -1) return PyErr_SetFromErrno(PyExc_OSError);
if (stdout_fd > -1 && dup2(tfd, stdout_fd) == -1) return PyErr_SetFromErrno(PyExc_OSError);
if (stderr_fd > -1 && dup2(tfd, stderr_fd) == -1) return PyErr_SetFromErrno(PyExc_OSError);
safe_close(tfd, __FILE__, __LINE__);
Py_RETURN_NONE;
}