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#
# Copyright (C) 2022 Soleta Networks <info@soleta.eu>
#
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the
# Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
import logging
import os
import subprocess
from subprocess import DEVNULL, PIPE
import psutil
def find_mountpoint(path):
"""
Returns mountpoint of a given path
"""
path = os.path.abspath(path)
while not os.path.ismount(path):
path = os.path.dirname(path)
return path
def mount_mkdir(source, target):
"""
Mounts and creates the mountpoint directory if it's not present.
Return True if mount is sucessful or if target is already a mountpoint.
"""
if not os.path.exists(target):
os.mkdir(target)
if not os.path.ismount(target):
return mount(source, target)
else:
return True
return False
def mount(source, target):
"""
Mounts source into target directoru using mount(8).
Return true if exit code is 0. False otherwise.
"""
cmd = f'mount {source} {target}'
proc = subprocess.run(cmd.split(), stderr=DEVNULL)
return not proc.returncode
def umount(target):
"""
Umounts target using umount(8).
Return true if exit code is 0. False otherwise.
"""
cmd = f'umount {target}'
proc = subprocess.run(cmd.split(), stderr=DEVNULL)
return not proc.returncode
def get_usedperc(mountpoint):
"""
Returns percetage of used filesystem as decimal number.
"""
try:
total, used, free, perc = psutil.disk_usage(mountpoint)
except FileNotFoundError:
return '0'
return str(perc)
def ogReduceFs(disk, part):
"""
Bash function 'ogReduceFs' wrapper
"""
proc = subprocess.run(f'ogReduceFs {disk} {part}',
shell=True, stdout=PIPE)
if proc.returncode == 0:
subprocess.run(f'ogUnmount {disk} {part}',
shell=True, stdout=PIPE)
return proc.stdout.decode().replace('\n', '')
logging.warn(f'ogReduceFS exited with code {proc.returncode}')
return None
def ogExtendFs(disk, part):
"""
Bash function 'ogExtendFs' wrapper
"""
proc = subprocess.run(f'ogExtendFs {disk} {part}',
shell=True)
return proc.returncode
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