/usr/lib/python3/dist-packages/checkbox_support/heuristics/udev.py is in python3-checkbox-support 0.2-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | # This file is part of Checkbox.
#
# Copyright 2012 Canonical Ltd.
# Written by:
# Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
#
# Checkbox is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3,
# as published by the Free Software Foundation.
#
# Checkbox 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Checkbox. If not, see <http://www.gnu.org/licenses/>.
"""
checkbox_support.heuristics.dev
=======================
Heuristics for udev.
Documentation: http://udisks.freedesktop.org/docs/latest/
Source code: http://cgit.freedesktop.org/systemd/systemd/ (src/udev)
Bug tracker: http://bugs.freedesktop.org/ (using systemd product)
"""
def is_virtual_device(device_file):
"""
Given a device name like /dev/ramX, /dev/sdX or /dev/loopX determine if
this is a virtual device. Virtual devices are typically uninteresting to
users. The only exception may be nonempty loopback device.
Possible prior art: gnome-disks, palimpset (precursor, suffering from this
flaw and showing all the /dev/ram devices by default)
"""
for part in device_file.split("/"):
if part.startswith("ram") or part.startswith("loop"):
return True
return False
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