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#!/usr/bin/python
# Copyright (c) 2017 Leo Antunes <leo@costela.net>
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
from __future__ import print_function
import os
import sys
from glob import glob
import argparse
import logging
__version__ = '0.1.0'
OK = 0
WARNING = 1
CRITICAL = 2
UNKNOWN = 3
def main():
argparser = argparse.ArgumentParser()
argparser.add_argument('--version', action='version', version='%(prog)s ' + __version__)
argparser.add_argument('--quiet', action='store_true', help='no output if nothing found')
argparser.add_argument('--verbose', action='store_true', help='be verbose about the search process')
args = argparser.parse_args()
logger = logging.getLogger(os.path.basename(sys.argv[0]))
if args.verbose:
logging.basicConfig(level=logging.DEBUG)
else:
logging.basicConfig(level=logging.WARNING)
needs_reload = dict()
for proc in glob('/proc/[0-9]*'): # numbers to avoid e.g. /proc/self
exe = os.path.join(proc, 'exe')
if os.path.exists(exe):
proc_pid = os.path.basename(proc)
proc_name = os.path.basename(os.path.realpath(exe))
logger.debug('checking process %s', proc_name)
os.chdir(os.path.join(proc, 'map_files'))
for map_file in os.listdir('.'):
# all files in /map_files/ are absolute symlinks, so we don't need abspath()
real_map_file_path = os.path.realpath(map_file)
if not '/lib/' in real_map_file_path:
logger.debug('skipping non-lib path %s', real_map_file_path)
continue
else:
logger.debug('checking lib %s', real_map_file_path)
if os.stat(map_file).st_nlink == 0:
needs_reload.setdefault(proc_name, set()).add(proc_pid)
else:
logger.debug('skipping kernel process %s', os.path.basename(proc))
if needs_reload:
procs_with_pids = ', '.join(map(lambda x: '%s (%s)' % (x, ', '.join(needs_reload[x])), needs_reload))
print('The following processes have libs linked that were upgraded:', procs_with_pids)
exit(WARNING)
elif not args.quiet:
print('No upgraded libs linked in running processes')
exit(OK)
if __name__ == '__main__':
try:
main()
except Exception as e:
print('Exception:', e)
exit(UNKNOWN)
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