elf/tst-execstack-needed.c

   1 /* Test program for making nonexecutable stacks executable
   2    on DT_NEEDED load of a DSO that requires executable stacks.  */
   3
   4 #include <dlfcn.h>
   5 #include <stdio.h>
   6 #include <string.h>
   7 #include <unistd.h>
   8 #include <error.h>
   9
  10 extern void tryme (void);       /* from tst-execstack-mod.so */
  11
  12 static void deeper (void (*f) (void));
  13
  14 static int
  15 do_test (void)
  16 {
  17   tryme ();
  18
  19   /* Test that growing the stack region gets new executable pages too.  */
  20   deeper (&tryme);
  21
  22   return 0;
  23 }
  24
  25 static void
  26 deeper (void (*f) (void))
  27 {
  28   char stack[1100 * 1024];
  29   explicit_bzero (stack, sizeof stack);
  30   (*f) ();
  31   memfrob (stack, sizeof stack);
  32 }
  33
  34 #include <support/test-driver.c>