-
Notifications
You must be signed in to change notification settings - Fork 0
/
needs-restarting.py
executable file
·181 lines (152 loc) · 5.96 KB
/
needs-restarting.py
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
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
#!/usr/bin/python -tt
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
# Copyright 2009 Red Hat Inc
# written by Seth Vidal
# look through list of running apps
# report any app which was updated after it was started
# (and therefore needs to be restarted)
# for each /proc/number-dir
# get stat of create time on that dir
# open up smaps and search for all lines with 'fd:' in them
# take filename
# search for the package owning that file
# make a list of installtimes of all pkgs of the files the program has open
# sort the list
# if the dir create time is < the largest time on the installtimes list
# then output the pid and process cmdline as needing to be restarted
#TODO:
# maybe note deleted files which are not owned by any pkg but which an app
# is still using
# output userids, too?
import sys
import os
import yum
import yum.misc
import glob
import stat
from optparse import OptionParser
from yum.Errors import RepoError
sys.path.insert(0,'/usr/share/yum-cli')
import utils
def parseargs(args):
usage = """
needs-restarting: Report a list of process ids of programs that started
running before they or some component they use were updated.
"""
parser = OptionParser(usage=usage)
parser.add_option("-u", "--useronly", default=False, action="store_true",
help='show processes for my userid only')
(opts, args) = parser.parse_args(args)
return (opts, args)
def return_running_pids(uid=None):
mypid = os.getpid()
pids = []
for fn in glob.glob('/proc/[0123456789]*'):
if mypid == os.path.basename(fn):
continue
if uid: # meaning we're not root and we've added -u
if os.stat(fn)[stat.ST_UID] != uid:
continue
pids.append(os.path.basename(fn))
return pids
def get_open_files(pid):
files = []
smaps = '/proc/%s/smaps' % pid
try:
with open(smaps, 'r') as maps_f:
maps = maps_f.readlines()
except (IOError, OSError), e:
print >>sys.stderr, "Could not open %s" % smaps
return files
for line in maps:
slash = line.find('/')
if slash == -1 or line.find('00:') != -1: # if we don't have a '/' or if we fine 00: in the file then it's not _REALLY_ a file
continue
line = line.replace('\n', '')
filename = line[slash:]
filename = filename.split(';')[0]
filename = filename.strip()
if filename not in files:
files.append(filename)
return files
def main(args):
(opts, args) = parseargs(args)
myuid = os.geteuid()
if myuid and not opts.useronly:
print >>sys.stderr, "Please run as root or with --useronly option"
sys.exit(1)
my = yum.YumBase()
my.preconf.init_plugins=False
if hasattr(my, 'setCacheDir'):
my.setCacheDir()
my.conf.cache = True
needing_restart = set()
boot_time = utils.get_boot_time()
for pid in return_running_pids(uid=myuid):
try:
pid_start = utils.get_process_time(int(pid), boot_time)['start_time']
except (OSError, IOError), e:
continue
found_match = False
for fn in get_open_files(pid):
if found_match:
break
just_fn = fn.replace('(deleted)', '')
just_fn = just_fn.strip()
bogon = False
# if the file is in a pkg which has been updated since we started the pid - then it needs to be restarted
for pkg in my.rpmdb.searchFiles(just_fn):
if float(pkg.installtime) > float(pid_start):
needing_restart.add(pid)
found_match = True
continue
if just_fn in pkg.ghostlist:
bogon = True
break
if bogon:
continue
# if the file is deleted
if fn.find('(deleted)') != -1:
# and it is from /*bin/* then it needs to be restarted
if yum.misc.re_primary_filename(just_fn):
needing_restart.add(pid)
found_match = True
continue
# if the file is from an old ver of an installed pkg - then assume it was just updated but the
# new pkg doesn't have the same file names. Fabulous huh?!
my.conf.cache = False
for oldpkg in my.pkgSack.searchFiles(just_fn): # ghostfiles are always bogons
if just_fn in oldpkg.ghostlist:
continue
if my.rpmdb.installed(oldpkg.name):
needing_restart.add(pid)
found_match = True
break
for pid in needing_restart:
try:
cmdline = open('/proc/' +pid+ '/cmdline', 'r').read()
except (OSError, IOError), e:
print >>sys.stderr, "Couldn't access process information for %s: %s" % (pid, str(e))
continue
# proc cmdline is null-delimited so clean that up
cmdline = cmdline.replace('\000', ' ')
print '%s : %s' % (pid, cmdline)
return 0
if __name__ == "__main__":
try:
sys.exit(main(sys.argv))
except RepoError, e:
print >>sys.stderr, e
sys.exit(1)