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[3.12] gh-116541: Handle errors correctly in _pystatvfs_fromstructstatvfs (GH-116542) #116643

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Mar 12, 2024
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68 changes: 36 additions & 32 deletions Modules/posixmodule.c
Original file line number Diff line number Diff line change
Expand Up @@ -12371,46 +12371,50 @@ _pystatvfs_fromstructstatvfs(PyObject *module, struct statvfs st) {
if (v == NULL)
return NULL;

int pos = 0;

#define SET_RESULT(CALL) \
do { \
PyObject *item = (CALL); \
if (item == NULL) { \
Py_DECREF(v); \
return NULL; \
} \
PyStructSequence_SET_ITEM(v, pos++, item); \
} while(0)

#if !defined(HAVE_LARGEFILE_SUPPORT)
PyStructSequence_SET_ITEM(v, 0, PyLong_FromLong((long) st.f_bsize));
PyStructSequence_SET_ITEM(v, 1, PyLong_FromLong((long) st.f_frsize));
PyStructSequence_SET_ITEM(v, 2, PyLong_FromLong((long) st.f_blocks));
PyStructSequence_SET_ITEM(v, 3, PyLong_FromLong((long) st.f_bfree));
PyStructSequence_SET_ITEM(v, 4, PyLong_FromLong((long) st.f_bavail));
PyStructSequence_SET_ITEM(v, 5, PyLong_FromLong((long) st.f_files));
PyStructSequence_SET_ITEM(v, 6, PyLong_FromLong((long) st.f_ffree));
PyStructSequence_SET_ITEM(v, 7, PyLong_FromLong((long) st.f_favail));
PyStructSequence_SET_ITEM(v, 8, PyLong_FromLong((long) st.f_flag));
PyStructSequence_SET_ITEM(v, 9, PyLong_FromLong((long) st.f_namemax));
SET_RESULT(PyLong_FromLong((long) st.f_bsize));
SET_RESULT(PyLong_FromLong((long) st.f_frsize));
SET_RESULT(PyLong_FromLong((long) st.f_blocks));
SET_RESULT(PyLong_FromLong((long) st.f_bfree));
SET_RESULT(PyLong_FromLong((long) st.f_bavail));
SET_RESULT(PyLong_FromLong((long) st.f_files));
SET_RESULT(PyLong_FromLong((long) st.f_ffree));
SET_RESULT(PyLong_FromLong((long) st.f_favail));
SET_RESULT(PyLong_FromLong((long) st.f_flag));
SET_RESULT(PyLong_FromLong((long) st.f_namemax));
#else
PyStructSequence_SET_ITEM(v, 0, PyLong_FromLong((long) st.f_bsize));
PyStructSequence_SET_ITEM(v, 1, PyLong_FromLong((long) st.f_frsize));
PyStructSequence_SET_ITEM(v, 2,
PyLong_FromLongLong((long long) st.f_blocks));
PyStructSequence_SET_ITEM(v, 3,
PyLong_FromLongLong((long long) st.f_bfree));
PyStructSequence_SET_ITEM(v, 4,
PyLong_FromLongLong((long long) st.f_bavail));
PyStructSequence_SET_ITEM(v, 5,
PyLong_FromLongLong((long long) st.f_files));
PyStructSequence_SET_ITEM(v, 6,
PyLong_FromLongLong((long long) st.f_ffree));
PyStructSequence_SET_ITEM(v, 7,
PyLong_FromLongLong((long long) st.f_favail));
PyStructSequence_SET_ITEM(v, 8, PyLong_FromLong((long) st.f_flag));
PyStructSequence_SET_ITEM(v, 9, PyLong_FromLong((long) st.f_namemax));
SET_RESULT(PyLong_FromLong((long) st.f_bsize));
SET_RESULT(PyLong_FromLong((long) st.f_frsize));
SET_RESULT(PyLong_FromLongLong((long long) st.f_blocks));
SET_RESULT(PyLong_FromLongLong((long long) st.f_bfree));
SET_RESULT(PyLong_FromLongLong((long long) st.f_bavail));
SET_RESULT(PyLong_FromLongLong((long long) st.f_files));
SET_RESULT(PyLong_FromLongLong((long long) st.f_ffree));
SET_RESULT(PyLong_FromLongLong((long long) st.f_favail));
SET_RESULT(PyLong_FromLong((long) st.f_flag));
SET_RESULT(PyLong_FromLong((long) st.f_namemax));
#endif
/* The _ALL_SOURCE feature test macro defines f_fsid as a structure
* (issue #32390). */
#if defined(_AIX) && defined(_ALL_SOURCE)
PyStructSequence_SET_ITEM(v, 10, PyLong_FromUnsignedLong(st.f_fsid.val[0]));
SET_RESULT(PyLong_FromUnsignedLong(st.f_fsid.val[0]));
#else
PyStructSequence_SET_ITEM(v, 10, PyLong_FromUnsignedLong(st.f_fsid));
SET_RESULT(PyLong_FromUnsignedLong(st.f_fsid));
#endif
if (PyErr_Occurred()) {
Py_DECREF(v);
return NULL;
}

#undef SET_RESULT

return v;
}
Expand Down