I've thought some more deeply about the usage of unstripped libs.
On Tue, 22 Oct 2002 11:31:14 -0500
[EMAIL PROTECTED] wrote:
> Package: xlibs-dbg
> [...]
> Unstripped versions of Xlib's internationalization loadable modules are
> provided in /usr/X11R6/lib/debug/X11/locale/common. Note that if you wish
> to debug these modules, you will need to set XLOCALEDIR to
> /usr/X11R6/lib/debug/X11/locale. Also note that for security reasons,
> unprivileged users are unable to override XLOCALEDIR in this way, so you
> may have to perform your debugging of the Xlib modules as root.
It may worth mentioning that by intercepting dlopen() call,
we can make a process to load alternate(unstripped) modules
without having root privilege.
How about creating dlwrap.c which looks like
------------------------BEGIN HERE------------------------
#define _GNU_SOURCE 1
#include <dlfcn.h>
#include <string.h>
void * dlopen(const char *filename, int flag){
static void * (* fptr)() = 0;
char buffer[] = "/usr/X11R6/lib/debug/X11/locale/common/0123456789ABCDEF";
if (!fptr) {
fptr = dlsym(RTLD_NEXT, "dlopen");
if (!fptr)
return 0;
}
if ((strncmp("/usr/X11R6/lib/X11/locale/common/", filename, 33) == 0) &&
(strlen(filename) < 33+16)){
memcpy(buffer+32, filename+33, strlen(filename) -32);
return ((*fptr)(buffer, flag));
}
return ((*fptr)(filename, flag));
}
------------------------END HERE------------------------
and doing
~$ gcc -shared -o dlwrap.so dlwrap.c -ldl
~$ LD_PRELOAD=./dlwrap.so FOOBAR
?
--
To UNSUBSCRIBE, email to [EMAIL PROTECTED]
with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
