Re: libltdl is inefficient and a security hazard

[Bob Friesenhahn]

Here is what happens when an uninstalled module gets loaded under 
FreeBSD:

access("/home/bfriesen/build/GraphicsMagick-16-modules/coders/xc.la",4) = 0 
(0x0)
open("/home/bfriesen/build/GraphicsMagick-16-modules/coders/xc.la",O_RDONLY,0666)
 = 3 (0x3)
access("/home/bfriesen/build/GraphicsMagick-16-modules/magick/.libs/xc.a",0) 
ERR#2 'No such file or directory'
access("/usr/local/lib/xc.a",0)                  ERR#2 'No such file or 
directory'
access("/lib/xc.a",0)                            ERR#2 'No such file or 
directory'
access("/usr/lib/xc.a",0)                        ERR#2 'No such file or 
directory'
access("/usr/lib/compat/xc.a",0)                 ERR#2 'No such file or 
directory'
access("/usr/local/lib/xc.a",0)                  ERR#2 'No such file or 
directory'
access("/usr/local/lib/compat/pkg/xc.a",0)       ERR#2 'No such file or 
directory'
access("/usr/local/lib/compat/xc.a",0)           ERR#2 'No such file or 
directory'
access("/usr/local/lib/evolution/2.24/xc.a",0)   ERR#2 'No such file or 
directory'
access("/usr/local/lib/gcc-4.2.5/xc.a",0)        ERR#2 'No such file or 
directory'
access("/usr/local/lib/gegl-0.0/xc.a",0)         ERR#2 'No such file or 
directory'
access("/usr/local/lib/graphviz/xc.a",0)         ERR#2 'No such file or 
directory'
access("/usr/local/lib/kde3/xc.a",0)             ERR#2 'No such file or 
directory'
access("/usr/local/lib/mysql/xc.a",0)            ERR#2 'No such file or 
directory'
access("/usr/local/lib/nss/xc.a",0)              ERR#2 'No such file or 
directory'
access("/usr/local/lib/pth/xc.a",0)              ERR#2 'No such file or 
directory'
access("/usr/local/lib/qt4/xc.a",0)              ERR#2 'No such file or 
directory'
access("/usr/local/lib/zsh/xc.a",0)              ERR#2 'No such file or 
directory'
access("/lib/xc.a",0)                            ERR#2 'No such file or 
directory'
access("/usr/lib/xc.a",0)                        ERR#2 'No such file or 
directory'
open("/home/bfriesen/build/GraphicsMagick-16-modules/coders/.libs/xc.so",O_RDONLY,010)
 = 3 (0x3)

Bob
--
Bob Friesenhahn
address@hidden, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/