pylibmount: basic code
[kzak@redhat.com: - split to more patches
- split to more .c files]
Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
This commit is contained in:
Ondrej Oprala
Karel Zak
parent
d78df0ac65
commit
813683a352
6 changed files with 3045 additions and 2 deletions
205
libmount/python/pylibmount.c
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205
libmount/python/pylibmount.c
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/*
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* Python bindings for the libmount library.
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*
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* Copyright (C) 2013, Red Hat, Inc. All rights reserved.
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* Written by Ondrej Oprala and Karel Zak
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*
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* This file is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or (at your option) any later version.
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*
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* This file is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this file; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "pylibmount.h"
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/* Libmount-specific Exception class */
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PyObject *LibmountError;
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PyObject *UL_IncRef(void *killme)
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{
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Py_INCREF(killme);
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return killme;
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}
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/* Demultiplexer for various possible error conditions across the libmount library */
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void *UL_RaiseExc(int e)
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{
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/* TODO: Do we need to deal with -1/1? */
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switch (e) {
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case ENOMEM:
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PyErr_SetString(PyExc_MemoryError, strerror(e));
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break;
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case EINVAL:
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PyErr_SetString(PyExc_TypeError, strerror(e));
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break;
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/* libmount-specific errors */
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case MNT_ERR_APPLYFLAGS:
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PyErr_SetString(LibmountError, "Failed to apply MS_PROPAGATION flags");
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break;
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case MNT_ERR_MOUNTOPT:
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PyErr_SetString(LibmountError, "Failed to parse/use userspace mount options");
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break;
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case MNT_ERR_NOFSTAB:
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PyErr_SetString(LibmountError, "Failed to detect filesystem type");
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break;
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case MNT_ERR_NOFSTYPE:
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PyErr_SetString(LibmountError, "Required mount source undefined");
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break;
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case MNT_ERR_NOSOURCE:
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PyErr_SetString(LibmountError, "Loopdev setup failed");
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break;
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case MNT_ERR_AMBIFS:
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PyErr_SetString(LibmountError, "Libblkid detected more filesystems on the device");
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break;
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/* some other errno */
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default:
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PyErr_SetString(PyExc_Exception, strerror(e));
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break;
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}
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return NULL;
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}
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/*
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* General functions
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*/
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PyObject *PyObjectResultInt(int i)
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{
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PyObject *result = Py_BuildValue("i", i);
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if (!result)
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PyErr_SetString(PyExc_RuntimeError, CONSTRUCT_ERR);
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return result;
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}
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PyObject *PyObjectResultStr(const char *s)
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{
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if (!s)
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/* TODO: maybe lie about it and return "":
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* which would allow for
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* fs = libmount.Fs()
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* fs.comment += "comment"
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return Py_BuildValue("s", ""); */
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Py_RETURN_NONE;
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PyObject *result = Py_BuildValue("s", s);
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if (!result)
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PyErr_SetString(PyExc_RuntimeError, CONSTRUCT_ERR);
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return result;
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}
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/* wrapper around a common use case for PyString_AsString() */
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char *pystos(PyObject *pys)
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{
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if (!PyString_Check(pys)) {
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PyErr_SetString(PyExc_TypeError, ARG_ERR);
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return NULL;
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}
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return PyString_AsString(pys);
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}
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/*
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* the libmount module
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*/
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#define PYLIBMOUNT_DESC \
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"Python API for the util-linux libmount library.\n\n" \
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"Please note that none of the classes' attributes may be deleted.\n" \
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"This is not a complete mapping to the libmount C API, nor is it\n" \
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"attempting to be one.\n" "Iterator functions only allow forward\n" \
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"iteration for now. Contex.get_{user_,}mflags() differs from the C API\n" \
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"and returns the flags directly. Fs.get_tag() differs from the C API\n" \
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"and returns a (tag, value) tuple. Every attribute is \"filtered\"" \
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"through appropriate getters/setters, no values are set directly."
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static PyMethodDef libmount_methods[] = {
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{NULL} /* Sentinel */
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};
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#ifndef PyMODINIT_FUNC
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# define PyMODINIT_FUNC void
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#endif
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PyMODINIT_FUNC initpylibmount(void);
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PyMODINIT_FUNC initpylibmount(void)
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{
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PyObject *m = Py_InitModule3("pylibmount", libmount_methods, PYLIBMOUNT_DESC);
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if (!m)
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return;
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LibmountError = PyErr_NewException("libmount.Error", NULL, NULL);
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Py_INCREF(LibmountError);
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PyModule_AddObject(m, "Error", (PyObject *)LibmountError);
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pymnt_init_fs(m);
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pymnt_init_table(m);
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pymnt_init_context(m);
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/*
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* mount(8) userspace options masks (MNT_MAP_USERSPACE map)
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*/
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PyModule_AddIntConstant(m, "MNT_MS_COMMENT", MNT_MS_COMMENT);
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PyModule_AddIntConstant(m, "MNT_MS_GROUP", MNT_MS_GROUP);
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PyModule_AddIntConstant(m, "MNT_MS_HELPER", MNT_MS_HELPER);
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PyModule_AddIntConstant(m, "MNT_MS_LOOP", MNT_MS_LOOP);
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PyModule_AddIntConstant(m, "MNT_MS_NETDEV", MNT_MS_NETDEV);
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PyModule_AddIntConstant(m, "MNT_MS_NOAUTO", MNT_MS_NOAUTO);
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PyModule_AddIntConstant(m, "MNT_MS_NOFAIL", MNT_MS_NOFAIL);
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PyModule_AddIntConstant(m, "MNT_MS_OFFSET", MNT_MS_OFFSET);
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PyModule_AddIntConstant(m, "MNT_MS_OWNER", MNT_MS_OWNER);
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PyModule_AddIntConstant(m, "MNT_MS_SIZELIMIT", MNT_MS_SIZELIMIT);
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PyModule_AddIntConstant(m, "MNT_MS_ENCRYPTION", MNT_MS_ENCRYPTION);
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PyModule_AddIntConstant(m, "MNT_MS_UHELPER", MNT_MS_UHELPER);
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PyModule_AddIntConstant(m, "MNT_MS_USER", MNT_MS_USER);
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PyModule_AddIntConstant(m, "MNT_MS_USERS", MNT_MS_USERS);
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PyModule_AddIntConstant(m, "MNT_MS_XCOMMENT", MNT_MS_XCOMMENT);
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/*
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* mount(2) MS_* masks (MNT_MAP_LINUX map)
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*/
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PyModule_AddIntConstant(m, "MS_BIND", MS_BIND);
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PyModule_AddIntConstant(m, "MS_DIRSYNC", MS_DIRSYNC);
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PyModule_AddIntConstant(m, "MS_I_VERSION", MS_I_VERSION);
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PyModule_AddIntConstant(m, "MS_MANDLOCK", MS_MANDLOCK);
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PyModule_AddIntConstant(m, "MS_MGC_MSK", MS_MGC_MSK);
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PyModule_AddIntConstant(m, "MS_MGC_VAL", MS_MGC_VAL);
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PyModule_AddIntConstant(m, "MS_MOVE", MS_MOVE);
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PyModule_AddIntConstant(m, "MS_NOATIME", MS_NOATIME);
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PyModule_AddIntConstant(m, "MS_NODEV", MS_NODEV);
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PyModule_AddIntConstant(m, "MS_NODIRATIME", MS_NODIRATIME);
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PyModule_AddIntConstant(m, "MS_NOEXEC", MS_NOEXEC);
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PyModule_AddIntConstant(m, "MS_NOSUID", MS_NOSUID);
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PyModule_AddIntConstant(m, "MS_OWNERSECURE", MS_OWNERSECURE);
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PyModule_AddIntConstant(m, "MS_PRIVATE", MS_PRIVATE);
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PyModule_AddIntConstant(m, "MS_PROPAGATION", MS_PROPAGATION);
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PyModule_AddIntConstant(m, "MS_RDONLY", MS_RDONLY);
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PyModule_AddIntConstant(m, "MS_REC", MS_REC);
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PyModule_AddIntConstant(m, "MS_RELATIME", MS_RELATIME);
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PyModule_AddIntConstant(m, "MS_REMOUNT", MS_REMOUNT);
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PyModule_AddIntConstant(m, "MS_SECURE", MS_SECURE);
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PyModule_AddIntConstant(m, "MS_SHARED", MS_SHARED);
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PyModule_AddIntConstant(m, "MS_SILENT", MS_SILENT);
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PyModule_AddIntConstant(m, "MS_SLAVE", MS_SLAVE);
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PyModule_AddIntConstant(m, "MS_STRICTATIME", MS_STRICTATIME);
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PyModule_AddIntConstant(m, "MS_SYNCHRONOUS", MS_SYNCHRONOUS);
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PyModule_AddIntConstant(m, "MS_UNBINDABLE", MS_UNBINDABLE);
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/* Will we need these directly?
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PyModule_AddIntConstant(m, "MNT_ERR_AMBIFS", MNT_ERR_AMBIFS);
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PyModule_AddIntConstant(m, "MNT_ERR_APPLYFLAGS", MNT_ERR_APPLYFLAGS);
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PyModule_AddIntConstant(m, "MNT_ERR_LOOPDEV", MNT_ERR_LOOPDEV);
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PyModule_AddIntConstant(m, "MNT_ERR_MOUNTOPT", MNT_ERR_MOUNTOPT);
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PyModule_AddIntConstant(m, "MNT_ERR_NOFSTAB", MNT_ERR_NOFSTAB);
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PyModule_AddIntConstant(m, "MNT_ERR_NOFSTYPE", MNT_ERR_NOFSTYPE);
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PyModule_AddIntConstant(m, "MNT_ERR_NOSOURCE", MNT_ERR_NOSOURCE);
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*/
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/* Still useful for functions using iterators internally */
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PyModule_AddIntConstant(m, "MNT_ITER_FORWARD", MNT_ITER_FORWARD);
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PyModule_AddIntConstant(m, "MNT_ITER_BACKWARD", MNT_ITER_BACKWARD);
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}
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