#!/usr/bin/python

import sys
sys.path.append("/usr/share/rhn/up2date_client")
sys.path.append("/usr/share/rhn/rhn_applet")

import os
import re
import string

import rhn_utils
import rhn_applet_rpm

rpm = rhn_applet_rpm.rhnAppletRPM()

seen_cache = {}
for dir in os.listdir("/proc"):
    try:
        pid = int(dir)
    except ValueError:
        continue

    # have to wrap in a try because, alas, processes die
    
    try:
        mapfile = open("/proc/%s/maps" % dir)
    except IOError:
        continue
    
    for line in map(lambda s: string.strip(s), mapfile):
        fields = string.split(line, " ")
        if fields[-1] != "(deleted)":
            continue
        if seen_cache.has_key(fields[-2]):
            continue
        seen_cache[fields[-2]] = 1
            
        # walk the filename backwards with dots.  the exact
        # filename, libfoo.so.2.12 was probably removed and not
        # changed in place, but the libfoo.so.2 may not have been.
        # or, libfoo.so may not have been.  walk backwards.
            
        components = string.split(fields[-2], ".")
            
        # start with -1 since the file is gone... and because of a
        # kernel bug that misprints the last component
        
        i = len(components) - 1
        while i > 0:
            filename = string.join(components[0:i], ".")
            packagename = rpm.find_provides_by_file(filename)
            if packagename:
                print "Stale library by pid %s: %s (%s)" % (dir, filename, packagename)
                break
            i = i - 1