* For details on that implementation, see below (look for uppercase
* "SECURE HEAP IMPLEMENTATION").
*/
+#include "e_os.h"
#include <openssl/crypto.h>
-#include <e_os.h>
#include <string.h>
-#if defined(OPENSSL_SYS_LINUX) || defined(OPENSSL_SYS_UNIX)
+/* e_os.h includes unistd.h, which defines _POSIX_VERSION */
+#if defined(OPENSSL_SYS_UNIX) \
+ && defined(_POSIX_VERSION) && _POSIX_VERSION >= 200112L
# define IMPLEMENTED
# include <stdlib.h>
# include <assert.h>
int ret = 0;
if (!secure_mem_initialized) {
- sec_malloc_lock = CRYPTO_THREAD_lock_new();
+ sec_malloc_lock = CRYPTO_THREAD_glock_new("sec_malloc");
if (sec_malloc_lock == NULL)
return 0;
if ((ret = sh_init(size, minsize)) != 0) {
#endif /* IMPLEMENTED */
}
+void CRYPTO_secure_clear_free(void *ptr, size_t num,
+ const char *file, int line)
+{
+#ifdef IMPLEMENTED
+ size_t actual_size;
+
+ if (ptr == NULL)
+ return;
+ if (!CRYPTO_secure_allocated(ptr)) {
+ OPENSSL_cleanse(ptr, num);
+ CRYPTO_free(ptr, file, line);
+ return;
+ }
+ CRYPTO_THREAD_write_lock(sec_malloc_lock);
+ actual_size = sh_actual_size(ptr);
+ CLEAR(ptr, actual_size);
+ secure_mem_used -= actual_size;
+ sh_free(ptr);
+ CRYPTO_THREAD_unlock(sec_malloc_lock);
+#else
+ if (ptr == NULL)
+ return;
+ OPENSSL_cleanse(ptr, num);
+ CRYPTO_free(ptr, file, line);
+#endif /* IMPLEMENTED */
+}
+
int CRYPTO_secure_allocated(const void *ptr)
{
#ifdef IMPLEMENTED
size_t pgsize;
size_t aligned;
- memset(&sh, 0, sizeof sh);
+ memset(&sh, 0, sizeof(sh));
/* make sure size and minsize are powers of 2 */
OPENSSL_assert(size > 0);
for (i = sh.bittable_size; i; i >>= 1)
sh.freelist_size++;
- sh.freelist = OPENSSL_zalloc(sh.freelist_size * sizeof (char *));
+ sh.freelist = OPENSSL_zalloc(sh.freelist_size * sizeof(char *));
OPENSSL_assert(sh.freelist != NULL);
if (sh.freelist == NULL)
goto err;
OPENSSL_free(sh.bitmalloc);
if (sh.map_result != NULL && sh.map_size)
munmap(sh.map_result, sh.map_size);
- memset(&sh, 0, sizeof sh);
+ memset(&sh, 0, sizeof(sh));
}
static int sh_allocated(const char *ptr)