diff options
| author | Søren Sandmann Pedersen <ssp@redhat.com> | 2010-09-13 14:34:34 -0400 |
|---|---|---|
| committer | Søren Sandmann Pedersen <ssp@redhat.com> | 2010-09-21 08:28:55 -0400 |
| commit | dc9fe269ea2a1a0b8334d0936e2541af48b81bc7 (patch) | |
| tree | d5884a2f36af239b963db61a6ae4437d32d156fd /configure.ac | |
| parent | f4dc73bad4f662bdc3c94cb1e224f9a1989beba5 (diff) | |
Add fence_malloc() and fence_free().
These variants of malloc() and free() try to surround the allocated
memory with protected pages so that out-of-bounds accessess will cause
a segmentation fault.
If mprotect() and getpagesize() are not available, these functions are
simply equivalent to malloc() and free().
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index dbff2a60..d3b71fa2 100644 --- a/configure.ac +++ b/configure.ac @@ -623,6 +623,19 @@ if test x$have_alarm = xyes; then AC_DEFINE(HAVE_ALARM, 1, [Whether we have alarm()]) fi +AC_CHECK_HEADER([sys/mman.h], + [AC_DEFINE(HAVE_SYS_MMAN_H, [1], [Define to 1 if we have <sys/mman.h>])]) + +AC_CHECK_FUNC(mprotect, have_mprotect=yes, have_mprotect=no) +if test x$have_mprotect = xyes; then + AC_DEFINE(HAVE_MPROTECT, 1, [Whether we have mprotect()]) +fi + +AC_CHECK_FUNC(getpagesize, have_getpagesize=yes, have_getpagesize=no) +if test x$have_getpagesize = xyes; then + AC_DEFINE(HAVE_GETPAGESIZE, 1, [Whether we have getpagesize()]) +fi + dnl ===================================== dnl Thread local storage |