2014-03-09 20:02:37 +00:00

44 lines
1.1 KiB
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$OpenBSD: patch-src_secmem_c,v 1.1 2014/03/09 20:02:37 jasper Exp $
Patch copied from gnupg/patches/patch-util_secmem_c
--- src/secmem.c.orig Wed Jan 29 10:48:38 2014
+++ src/secmem.c Sat Feb 22 13:48:07 2014
@@ -36,6 +36,9 @@
#include <sys/capability.h>
#endif
#endif
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <uvm/uvm_swap_encrypt.h>
#include "ath.h"
#include "g10lib.h"
@@ -232,8 +235,24 @@ mb_get_new (memblock_t *block, size_t size)
static void
print_warn (void)
{
- if (!no_warning)
- log_info (_("Warning: using insecure memory!\n"));
+ int mib[3], swapencrypt = 0;
+ size_t len;
+
+ mib[0] = CTL_VM;
+ mib[1] = VM_SWAPENCRYPT;
+ mib[2] = SWPENC_ENABLE;
+
+ len = sizeof(swapencrypt);
+
+ if (sysctl(mib, 3, &swapencrypt, &len, NULL, 0) == -1)
+ log_info("WARNING: Can't receive vm.swapencrypt.enable sysctl value\n");
+
+ if (!no_warning && !swapencrypt)
+ {
+ log_info("WARNING: Using insecure memory!\n");
+ log_info("Please enable swap encryption via"
+ " 'sysctl vm.swapencrypt.enable=1'.\n");
+ }
}
/* Lock the memory pages into core and drop privileges. */