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https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git
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db19ece3c5
We claim that libgpiod python bindings have no dependencies other than the python standard library but this is not true - the tests do depend on deprecated distutils for kernel version parsing. As distutils is deprecated, the recommended improvement is to use the Version class from packaging.version but this would too entail pulling in an external module. Let's instead implement the kernel version check in C using uname() and put it into the tests.system extension. This allows us to entirely drop the distutils import. Reviewed-by: Vincent Fazio <vfazio@xes-inc.com> Link: https://lore.kernel.org/r/20241120-drop-distutils-v1-3-7498e8b3babe@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
80 lines
1.7 KiB
C
80 lines
1.7 KiB
C
// SPDX-License-Identifier: LGPL-2.1-or-later
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// SPDX-FileCopyrightText: 2022 Bartosz Golaszewski <brgl@bgdev.pl>
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// SPDX-FileCopyrightText: 2024 Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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#include <Python.h>
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#include <linux/version.h>
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#include <sys/prctl.h>
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#include <sys/utsname.h>
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static PyObject *
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module_set_process_name(PyObject *Py_UNUSED(self), PyObject *args)
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{
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const char *name;
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int ret;
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ret = PyArg_ParseTuple(args, "s", &name);
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if (!ret)
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return NULL;
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ret = prctl(PR_SET_NAME, name);
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if (ret)
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return PyErr_SetFromErrno(PyExc_OSError);
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Py_RETURN_NONE;
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}
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static PyObject *
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module_check_kernel_version(PyObject *Py_UNUSED(self), PyObject *args)
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{
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unsigned int req_maj, req_min, req_rel, curr_maj, curr_min, curr_rel;
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struct utsname un;
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int ret;
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ret = PyArg_ParseTuple(args, "III", &req_maj, &req_min, &req_rel);
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if (!ret)
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return NULL;
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ret = uname(&un);
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if (ret)
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return PyErr_SetFromErrno(PyExc_OSError);
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ret = sscanf(un.release, "%u.%u.%u", &curr_maj, &curr_min, &curr_rel);
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if (ret != 3) {
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PyErr_SetString(PyExc_RuntimeError,
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"invalid linux version read from the kernel");
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return NULL;
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}
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if (KERNEL_VERSION(curr_maj, curr_min, curr_rel) <
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KERNEL_VERSION(req_maj, req_min, req_rel))
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Py_RETURN_FALSE;
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Py_RETURN_TRUE;
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}
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static PyMethodDef module_methods[] = {
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{
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.ml_name = "set_process_name",
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.ml_meth = (PyCFunction)module_set_process_name,
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.ml_flags = METH_VARARGS,
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},
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{
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.ml_name = "check_kernel_version",
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.ml_meth = (PyCFunction)module_check_kernel_version,
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.ml_flags = METH_VARARGS,
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},
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{ }
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};
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static PyModuleDef module_def = {
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PyModuleDef_HEAD_INIT,
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.m_name = "system._ext",
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.m_methods = module_methods,
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};
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PyMODINIT_FUNC PyInit__ext(void)
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{
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return PyModule_Create(&module_def);
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}
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