dlldep.SharedLib Class Reference

Collaboration diagram for dlldep.SharedLib:

Public Member Functions
def	__init__ (self, distance, lib)

Public Attributes
	lib
	distance
	deplibs

Private Member Functions
def	_getLibs (self, lib)

Detailed Description

Represent a shared library with name, dependencies and other stats

Definition at line 54 of file dlldep.py.

Constructor & Destructor Documentation

__init__()

def dlldep.SharedLib.__init__	(		self,
			distance,
			lib
	)

Definition at line 57 of file dlldep.py.

   def __init__(self, distance, lib):
      import os.path as osp
      lib = osp.expanduser(osp.expandvars(lib))
      if not osp.exists(lib):
         l = Dso.find_library(lib)
         if l:
            lib = l
      assert osp.exists(lib), "no such path [%s]" % (lib,)
      self.lib = lib              # path of library
      self.distance = distance    # distance from root lib
      self.deplibs = self._getLibs(lib)   # direct dependencies
 

Member Function Documentation

_getLibs()

def dlldep.SharedLib._getLibs (   self,   lib  )

private

Get direct dependencies of shared library

Definition at line 69 of file dlldep.py.

   def _getLibs(self, lib):
      """Get direct dependencies of shared library"""
 
      # First check if already in global cache
      cachedlib = Cache.files.get(lib)
      if cachedlib: return cachedlib.deplibs
      
      # Run readelf to find direct dependencies
      # Note: ldd itself does recursions so we cannot use it here
      encargs = {'encoding' : 'utf-8'}
      p = sp.Popen(["readelf","-d",lib], stdout=sp.PIPE, **encargs)
      output = p.communicate()[0]
      if p.returncode != 0:
         print ("Cannot run 'readelf' on",lib)
         return []
 
      libs = []
      for l in output.split("\n"):
         if l.find("NEEDED")==-1: continue
         libs += [l.split()[-1].strip("[]")]
 
      # Run ldd to find full path of libraries
      p = sp.Popen(["ldd",lib], stdout=sp.PIPE, **encargs)
      output = p.communicate()[0]
      if p.returncode != 0:
         print ("Cannot run 'ldd' on",lib)
         return []
 
      libpaths = []
      for l in output.split("\n"):
         fields = l.strip().split()
         if len(fields)!=4: continue
         path = fields[2]
         if (fields[0] in libs) and len(path)>0:
            libpaths += [path]
 
      return libpaths
 
               

Member Data Documentation

deplibs

dlldep.SharedLib.deplibs

Definition at line 67 of file dlldep.py.

distance

dlldep.SharedLib.distance

Definition at line 66 of file dlldep.py.

lib

dlldep.SharedLib.lib

Definition at line 65 of file dlldep.py.

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The documentation for this class was generated from the following file:

• dlldep.py