From d50a33a0a6c6a9b78829da9479dc2d6cb4a4d2ce Mon Sep 17 00:00:00 2001 From: Andy Grover Date: Fri, 9 Mar 2012 17:15:42 -0800 Subject: [PATCH 1/1] initial checkin Signed-off-by: Andy Grover --- COPYING | 340 +++++++++++++++++++++++++++++++++ COPYING.LESSER | 508 +++++++++++++++++++++++++++++++++++++++++++++++++ libkmod.c | 332 ++++++++++++++++++++++++++++++++ setup.py | 10 + 4 files changed, 1190 insertions(+) create mode 100644 COPYING create mode 100644 COPYING.LESSER create mode 100644 libkmod.c create mode 100644 setup.py diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..5b6e7c6 --- /dev/null +++ b/COPYING @@ -0,0 +1,340 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +Also add information on how to contact you by electronic and paper mail. + +You should also get your employer (if you work as a programmer) or +your school, if any, to sign a "copyright disclaimer" for the library, +if necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James + Random Hacker. + + , 1 April 1990 + Ty Coon, President of Vice + +That's all there is to it! diff --git a/libkmod.c b/libkmod.c new file mode 100644 index 0000000..8039afe --- /dev/null +++ b/libkmod.c @@ -0,0 +1,332 @@ +/* + * Libkmod -- Python interface to kmod API. + * + * Copyright (C) 2012 Red Hat, Inc. All rights reserved. + * + * This copyrighted material is made available to anyone wishing to use, + * modify, copy, or redistribute it subject to the terms and conditions + * of the GNU Lesser General Public License v.2.1. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Author: Andy Grover + * + */ + +#include +#include + +typedef struct { + PyObject_HEAD + struct kmod_ctx *ctx; +} kmodobject; + +static PyTypeObject LibKmodType; + +static PyObject *LibKmodError; + + +/* ---------------------------------------------------------------------- + * kmod object initialization/deallocation + */ + +static int +libkmod_init(kmodobject *self, PyObject *arg) +{ + char *mod_dir = NULL; + + if (!PyArg_ParseTuple(arg, "|s", &mod_dir)) + return -1; + + self->ctx = kmod_new(mod_dir, NULL); + if (!self->ctx) { + PyErr_SetFromErrno(PyExc_OSError); + return -1; + } + + return 0; +} + +static void +libkmod_dealloc(kmodobject *self) +{ + /* if already closed, don't reclose it */ + if (self->ctx != NULL){ + kmod_unref(self->ctx); + } + //self->ob_type->tp_free((PyObject*)self); + PyObject_Del(self); +} + +static PyObject * +liblvm_library_get_version(lvmobject *self) +{ + return Py_BuildValue("s", lvm_library_get_version()); +} + + +static PyObject * +liblvm_close(lvmobject *self) +{ + /* if already closed, don't reclose it */ + if (self->libh != NULL) + lvm_quit(self->libh); + + self->libh = NULL; + Py_INCREF(Py_None); + return Py_None; +} + +static PyObject * +liblvm_lvm_list_vg_names(lvmobject *self) +{ + struct dm_list *vgnames; + const char *vgname; + struct lvm_str_list *strl; + PyObject * rv; + int i = 0; + + if ((vgnames = lvm_list_vg_names(self->libh))== NULL) + goto error; + + if (dm_list_empty(vgnames)) + goto error; + + rv = PyTuple_New(dm_list_size(vgnames)); + if (rv == NULL) + return NULL; + + dm_list_iterate_items(strl, vgnames) { + vgname = strl->str; + PyTuple_SET_ITEM(rv, i, PyString_FromString(vgname)); + i++; + } + + return rv; + +error: + PyErr_SetObject(LibLVMError,liblvm_get_last_error(self)); + return NULL; +} + +static PyObject * +liblvm_lvm_list_vg_uuids(lvmobject *self) +{ + struct dm_list *uuids; + const char *uuid; + struct lvm_str_list *strl; + PyObject * rv; + int i = 0; + + if ((uuids = lvm_list_vg_uuids(self->libh))== NULL) + goto error; + + if (dm_list_empty(uuids)) + goto error; + + rv = PyTuple_New(dm_list_size(uuids)); + if (rv == NULL) + return NULL; + dm_list_iterate_items(strl, uuids) { + uuid = strl->str; + PyTuple_SET_ITEM(rv, i, PyString_FromString(uuid)); + i++; + } + + return rv; + +error: + PyErr_SetObject(LibLVMError,liblvm_get_last_error(self)); + return NULL; +} + +static PyObject * +liblvm_lvm_vgname_from_pvid(lvmobject *self, PyObject *arg) +{ + const char *pvid; + const char *vgname; + if (!PyArg_ParseTuple(arg, "s", &pvid)) + return NULL; + + if((vgname = lvm_vgname_from_pvid(self->libh, pvid)) == NULL) { + PyErr_SetObject(LibLVMError,liblvm_get_last_error(self)); + return NULL; + } + + return Py_BuildValue("s", vgname); +} + +static PyObject * +liblvm_lvm_vgname_from_device(lvmobject *self, PyObject *arg) +{ + const char *device; + const char *vgname; + if (!PyArg_ParseTuple(arg, "s", &device)) + return NULL; + + if((vgname = lvm_vgname_from_device(self->libh, device)) == NULL) { + PyErr_SetObject(LibLVMError,liblvm_get_last_error(self)); + return NULL; + } + + return Py_BuildValue("s", vgname); +} + +static PyObject * +liblvm_lvm_config_reload(lvmobject *self) +{ + int rval; + + if((rval = lvm_config_reload(self->libh)) == -1) { + PyErr_SetObject(LibLVMError,liblvm_get_last_error(self)); + return NULL; + } + + return Py_BuildValue("i", rval); +} + + +static PyObject * +liblvm_lvm_scan(lvmobject *self) +{ + int rval; + + if((rval = lvm_scan(self->libh)) == -1) { + PyErr_SetObject(LibLVMError,liblvm_get_last_error(self)); + return NULL; + } + + return Py_BuildValue("i", rval); +} + +static PyObject * +liblvm_lvm_config_override(lvmobject *self, PyObject *arg) +{ + const char *config; + int rval; + + if (!PyArg_ParseTuple(arg, "s", &config)) + return NULL; + + if ((rval = lvm_config_override(self->libh, config)) == -1) { + PyErr_SetObject(LibLVMError,liblvm_get_last_error(self)); + return NULL; + } + return Py_BuildValue("i", rval); +} + +/* ---------------------------------------------------------------------- + * Method tables and other bureaucracy + */ + +static PyMethodDef Libkmod_methods[] = { + /* LVM methods */ + { "getVersion", (PyCFunction)liblvm_library_get_version, METH_NOARGS }, + { "vgOpen", (PyCFunction)liblvm_lvm_vg_open, METH_VARARGS }, + { "vgCreate", (PyCFunction)liblvm_lvm_vg_create, METH_VARARGS }, + { "close", (PyCFunction)liblvm_close, METH_NOARGS }, + { "configReload", (PyCFunction)liblvm_lvm_config_reload, METH_NOARGS }, + { "configOverride", (PyCFunction)liblvm_lvm_config_override, METH_VARARGS }, + { "scan", (PyCFunction)liblvm_lvm_scan, METH_NOARGS }, + { "listVgNames", (PyCFunction)liblvm_lvm_list_vg_names, METH_NOARGS }, + { "listVgUuids", (PyCFunction)liblvm_lvm_list_vg_uuids, METH_NOARGS }, + { "vgNameFromPvid", (PyCFunction)liblvm_lvm_vgname_from_pvid, METH_VARARGS }, + { "vgNameFromDevice", (PyCFunction)liblvm_lvm_vgname_from_device, METH_VARARGS }, + + { NULL, NULL} /* sentinel */ +}; + +static PyObject * +liblvm_vg_getattr(vgobject *self, char *name) +{ + return Py_FindMethod(liblvm_vg_methods, (PyObject *)self, name); +} + +static PyObject * +liblvm_lv_getattr(vgobject *self, char *name) +{ + return Py_FindMethod(liblvm_lv_methods, (PyObject *)self, name); +} + +static PyObject * +liblvm_pv_getattr(vgobject *self, char *name) +{ + return Py_FindMethod(liblvm_pv_methods, (PyObject *)self, name); +} + +static PyTypeObject LibKmodType = { + PyObject_HEAD_INIT(NULL) + 0, /*ob_size*/ + "kmod.kmod", /*tp_name*/ + sizeof(kmodobject), /*tp_basicsize*/ + 0, /*tp_itemsize*/ + (destructor)libkmod_dealloc, /*tp_dealloc*/ + 0, /*tp_print*/ + 0, /*tp_getattr*/ + 0, /*tp_setattr*/ + 0, /*tp_compare*/ + 0, /*tp_repr*/ + 0, /*tp_as_number*/ + 0, /*tp_as_sequence*/ + 0, /*tp_as_mapping*/ + 0, /*tp_hash */ + 0, /*tp_call*/ + 0, /*tp_str*/ + 0, /*tp_getattro*/ + 0, /*tp_setattro*/ + 0, /*tp_as_buffer*/ + Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/ + "Libkmod objects", /* tp_doc */ + 0, /* tp_traverse */ + 0, /* tp_clear */ + 0, /* tp_richcompare */ + 0, /* tp_weaklistoffset */ + 0, /* tp_iter */ + 0, /* tp_iternext */ + Libkmod_methods, /* tp_methods */ + 0, /* tp_members */ + 0, /* tp_getset */ + 0, /* tp_base */ + 0, /* tp_dict */ + 0, /* tp_descr_get */ + 0, /* tp_descr_set */ + 0, /* tp_dictoffset */ + (initproc)libkmod_init, /* tp_init */ + 0, /* tp_alloc */ + 0, + //(newfunc)Libkmod_new, /* tp_new */ +}; + +#ifndef PyMODINIT_FUNC /* declarations for DLL import/export */ +#define PyMODINIT_FUNC void +#endif +PyMODINIT_FUNC +initlibkmod(void) +{ + PyObject *m; + + LibKmodType.tp_new = PyType_GenericNew; + if (PyType_Ready(&LibKmodType) < 0) + return; + + m = Py_InitModule3("libkmod", Libkmod_methods, "Libkmod module"); + if (m == NULL) + return; + + Py_INCREF(&LibKmodType); + PyModule_AddObject(m, "LibKmod", (PyObject *)&LibKmodType); + + LibKmodError = PyErr_NewException("Libkmod.LibKmodError", + NULL, NULL); + if (LibKmodError) { + /* Each call to PyModule_AddObject decrefs it; compensate: */ + Py_INCREF(LibKmodError); + Py_INCREF(LibKmodError); + PyModule_AddObject(m, "error", LibKmodError); + PyModule_AddObject(m, "LibKmodError", LibKmodError); + } + +} + diff --git a/setup.py b/setup.py new file mode 100644 index 0000000..55e3909 --- /dev/null +++ b/setup.py @@ -0,0 +1,10 @@ +from distutils.core import setup, Extension + +libkmod = Extension('libkmod', + sources = ['libkmod.c'], + libraries= ['kmod']) + +setup (name = 'libkmod', + version = '1.0', + description = 'Python binding for kmod', + ext_modules = [libkmod]) -- 2.26.2