lib/explicit_bzero.c

   1 /*
   2  * Public domain.
   3  * Written by Matthew Dempsky.
   4  * Adapted for frr.
   5  */
   6
   7 #ifdef HAVE_CONFIG_H
   8 #include "config.h"
   9 #endif
  10
  11 #include <string.h>
  12
  13 #ifndef HAVE_EXPLICIT_BZERO
  14 #undef explicit_bzero
  15
  16
  17 void explicit_bzero(void *buf, size_t len);
  18 __attribute__((__weak__)) void
  19 __explicit_bzero_hook(void *buf, size_t len);
  20
  21 __attribute__((__weak__)) void
  22 __explicit_bzero_hook(void *buf, size_t len)
  23 {
  24 }
  25
  26 #if defined(__clang__)
  27 #pragma clang optimize off
  28 #else
  29 #pragma GCC optimize("00")
  30 #endif
  31
  32 void
  33 explicit_bzero(void *buf, size_t len)
  34 {
  35         memset(buf, 0, len);
  36         __explicit_bzero_hook(buf, len);
  37 }
  38
  39 #endif