/usr/share/denyhosts/DenyHosts/lockfile.py is in denyhosts 2.10-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | import os
from util import die
class LockFile(object):
def __init__(self, lockpath):
self.lockpath = lockpath
self.fd = None
def exists(self):
return os.access(self.lockpath, os.F_OK)
def get_pid(self):
pid = ""
try:
fp = open(self.lockpath, "r")
pid = fp.read().strip()
fp.close()
except IOError:
pass
return pid
def create(self):
try:
self.fd = os.open(self.lockpath,
os.O_CREAT | # create file
os.O_TRUNC | # truncate it, if it exists
os.O_WRONLY | # write-only
os.O_EXCL, # exclusive access
0644) # file mode
except Exception, e:
pid = self.get_pid()
die("DenyHosts could not obtain lock (pid: %s)" % pid, e)
os.write(self.fd, "%s\n" % os.getpid())
os.fsync(self.fd)
def remove(self, die_=True):
try:
if self.fd:
os.close(self.fd)
except IOError:
pass
self.fd = None
try:
os.unlink(self.lockpath)
except Exception, e:
if die_:
die("Error deleting DenyHosts lock file: %s" % self.lockpath, e)
|