[Qt-creator] Debugging as super-user

[André Pönitz]

On Thursday 15 April 2010 01:56:52 ext Bryce Schober wrote:
> yep. The problem is that I can't figure out how to get qt-creator to allow any wrapper to do the interactive stuff necessary to get through sudo, or preferrably gksu.

That's strange. Does mlockall() depend on group permissions 
rather than user permissions?

If so, try running 

  echo '
   #include <stdio.h>
   #include <unistd.h>
   #include <grp.h>

   int main(int argc, char *argv[])
   {
       setreuid(geteuid(), geteuid());
       setregid(getegid(), getegid());
       gid_t zero = 0;
       setgroups(1, &zero);
       return execvp("/usr/bin/gdb", argv);
   }
  ' | gcc -xc - -o /tmp/gdb-su && chmod +s /tmp/gdb-su

as root.

Running the resulting executable as ordinary user produces here:

ap at ...:~$ /tmp/gdb-su -quiet -ex 'shell id' -ex quit 
warning: not using untrusted file "/home/ap/.gdbinit"
uid=0(root) gid=0(root) groups=0(root)

This looks pretty 'root-ish' to me...

Andre'