dlldep.SharedLib Class Reference

Collaboration diagram for dlldep.SharedLib:

Public Member Functions
	__init__ (self, distance, lib)

Public Attributes
	lib = lib
	distance = distance
	deplibs = self._getLibs(lib)

Protected Member Functions
	_getLibs (self, lib)

Detailed Description

Represent a shared library with name, dependencies and other stats

Definition at line 52 of file dlldep.py.

Constructor & Destructor Documentation

__init__()

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

Definition at line 55 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()

dlldep.SharedLib._getLibs ( self, lib )

protected

Get direct dependencies of shared library

Definition at line 67 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 = self._getLibs(lib)

Definition at line 65 of file dlldep.py.

distance

dlldep.SharedLib.distance = distance

Definition at line 64 of file dlldep.py.

lib

dlldep.SharedLib.lib = lib

Definition at line 63 of file dlldep.py.

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

• dlldep.py