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/*
* Copyright (C) 2018 Facebook
*
* This file is part of libbtrfsutil.
*
* libbtrfsutil is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* libbtrfsutil is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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 libbtrfsutil. If not, see <http://www.gnu.org/licenses/>.
*/
#include "btrfsutilpy.h"
typedef struct {
PyOSErrorObject os_error;
PyObject *btrfsutilerror;
} BtrfsUtilError;
void SetFromBtrfsUtilError(enum btrfs_util_error err)
{
SetFromBtrfsUtilErrorWithPaths(err, NULL, NULL);
}
void SetFromBtrfsUtilErrorWithPath(enum btrfs_util_error err,
struct path_arg *path1)
{
SetFromBtrfsUtilErrorWithPaths(err, path1, NULL);
}
void SetFromBtrfsUtilErrorWithPaths(enum btrfs_util_error err,
struct path_arg *path1,
struct path_arg *path2)
{
PyObject *strobj, *args, *exc;
int i = errno;
const char *str1 = btrfs_util_strerror(err), *str2 = strerror(i);
if (str1 && str2 && strcmp(str1, str2) != 0) {
strobj = PyUnicode_FromFormat("%s: %s", str1, str2);
} else if (str1) {
strobj = PyUnicode_FromString(str1);
} else if (str2) {
strobj = PyUnicode_FromString(str2);
} else {
Py_INCREF(Py_None);
strobj = Py_None;
}
if (strobj == NULL)
return;
args = Py_BuildValue("iOOOOi", i, strobj,
path1 ? path1->object : Py_None, Py_None,
path2 ? path2->object : Py_None, (int)err);
Py_DECREF(strobj);
if (args == NULL)
return;
exc = PyObject_CallObject((PyObject *)&BtrfsUtilError_type, args);
Py_DECREF(args);
if (exc == NULL)
return;
PyErr_SetObject((PyObject *)&BtrfsUtilError_type, exc);
Py_DECREF(exc);
}
static int BtrfsUtilError_clear(BtrfsUtilError *self)
{
Py_CLEAR(self->btrfsutilerror);
return Py_TYPE(self)->tp_base->tp_clear((PyObject *)self);
}
static void BtrfsUtilError_dealloc(BtrfsUtilError *self)
{
PyObject_GC_UnTrack(self);
BtrfsUtilError_clear(self);
Py_TYPE(self)->tp_free((PyObject *)self);
}
static int BtrfsUtilError_traverse(BtrfsUtilError *self, visitproc visit,
void *arg)
{
Py_VISIT(self->btrfsutilerror);
return Py_TYPE(self)->tp_base->tp_traverse((PyObject *)self, visit, arg);
}
static PyObject *BtrfsUtilError_new(PyTypeObject *type, PyObject *args,
PyObject *kwds)
{
BtrfsUtilError *self;
PyObject *oserror_args = args;
if (PyTuple_Check(args) && PyTuple_GET_SIZE(args) == 6) {
oserror_args = PyTuple_GetSlice(args, 0, 5);
if (oserror_args == NULL)
return NULL;
}
self = (BtrfsUtilError *)type->tp_base->tp_new(type, oserror_args,
kwds);
if (oserror_args != args)
Py_DECREF(oserror_args);
if (self == NULL)
return NULL;
if (PyTuple_Check(args) && PyTuple_GET_SIZE(args) == 6) {
self->btrfsutilerror = PyTuple_GET_ITEM(args, 5);
Py_INCREF(self->btrfsutilerror);
}
return (PyObject *)self;
}
static PyObject *BtrfsUtilError_str(BtrfsUtilError *self)
{
#define OR_NONE(x) ((x) ? (x) : Py_None)
if (self->btrfsutilerror) {
if (self->os_error.filename) {
if (self->os_error.filename2) {
return PyUnicode_FromFormat("[BtrfsUtilError %S Errno %S] %S: %R -> %R",
OR_NONE(self->btrfsutilerror),
OR_NONE(self->os_error.myerrno),
OR_NONE(self->os_error.strerror),
self->os_error.filename,
self->os_error.filename2);
} else {
return PyUnicode_FromFormat("[BtrfsUtilError %S Errno %S] %S: %R",
OR_NONE(self->btrfsutilerror),
OR_NONE(self->os_error.myerrno),
OR_NONE(self->os_error.strerror),
self->os_error.filename);
}
}
if (self->os_error.myerrno && self->os_error.strerror) {
return PyUnicode_FromFormat("[BtrfsUtilError %S Errno %S] %S",
self->btrfsutilerror,
self->os_error.myerrno,
self->os_error.strerror);
}
}
return Py_TYPE(self)->tp_base->tp_str((PyObject *)self);
#undef OR_NONE
}
static PyMemberDef BtrfsUtilError_members[] = {
{"btrfsutilerror", T_OBJECT,
offsetof(BtrfsUtilError, btrfsutilerror), 0,
"btrfsutil error code"},
{},
};
#define BtrfsUtilError_DOC \
"Btrfs operation error."
PyTypeObject BtrfsUtilError_type = {
PyVarObject_HEAD_INIT(NULL, 0)
"btrfsutil.BtrfsUtilError", /* tp_name */
sizeof(BtrfsUtilError), /* tp_basicsize */
0, /* tp_itemsize */
(destructor)BtrfsUtilError_dealloc, /* tp_dealloc */
NULL, /* tp_print */
NULL, /* tp_getattr */
NULL, /* tp_setattr */
NULL, /* tp_as_async */
NULL, /* tp_repr */
NULL, /* tp_as_number */
NULL, /* tp_as_sequence */
NULL, /* tp_as_mapping */
NULL, /* tp_hash */
NULL, /* tp_call */
(reprfunc)BtrfsUtilError_str, /* tp_str */
NULL, /* tp_getattro */
NULL, /* tp_setattro */
NULL, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC, /* tp_flags */
BtrfsUtilError_DOC, /* tp_doc */
(traverseproc)BtrfsUtilError_traverse, /* tp_traverse */
(inquiry)BtrfsUtilError_clear, /* tp_clear */
NULL, /* tp_richcompare */
0, /* tp_weaklistoffset */
NULL, /* tp_iter */
NULL, /* tp_iternext */
NULL, /* tp_methods */
BtrfsUtilError_members, /* tp_members */
NULL, /* tp_getset */
NULL, /* tp_base */
NULL, /* tp_dict */
NULL, /* tp_descr_get */
NULL, /* tp_descr_set */
offsetof(BtrfsUtilError, os_error.dict), /* tp_dictoffset */
NULL, /* tp_init */
NULL, /* tp_alloc */
BtrfsUtilError_new, /* tp_new */
};
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