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Diffstat (limited to 'sysdeps/unix/sysv/linux/dl-execstack.c')
-rw-r--r--sysdeps/unix/sysv/linux/dl-execstack.c25
1 files changed, 10 insertions, 15 deletions
diff --git a/sysdeps/unix/sysv/linux/dl-execstack.c b/sysdeps/unix/sysv/linux/dl-execstack.c
index 3d8f3938..b986898 100644
--- a/sysdeps/unix/sysv/linux/dl-execstack.c
+++ b/sysdeps/unix/sysv/linux/dl-execstack.c
@@ -27,35 +27,30 @@
#include <sysdep.h>
#include <unistd.h>
-extern int __stack_prot attribute_relro attribute_hidden;
-
static int
make_main_stack_executable (void **stack_endp)
{
/* This gives us the highest/lowest page that needs to be changed. */
uintptr_t page = ((uintptr_t) *stack_endp
& -(intptr_t) GLRO(dl_pagesize));
- int result = 0;
- if (__builtin_expect (__mprotect ((void *) page, GLRO(dl_pagesize),
- __stack_prot) == 0, 1))
- goto return_success;
- result = errno;
- goto out;
+ if (__mprotect ((void *) page, GLRO(dl_pagesize),
+ PROT_READ | PROT_WRITE | PROT_EXEC
+#if _STACK_GROWS_DOWN
+ | PROT_GROWSDOWN
+#elif _STACK_GROWS_UP
+ | PROT_GROWSUP
+#endif
+ ) != 0)
+ return errno;
- return_success:
/* Clear the address. */
*stack_endp = NULL;
/* Remember that we changed the permission. */
GL(dl_stack_flags) |= PF_X;
- out:
-#ifdef check_consistency
- check_consistency ();
-#endif
-
- return result;
+ return 0;
}
int