mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-04 12:53:05 +00:00
93 lines
2.3 KiB
Diff
93 lines
2.3 KiB
Diff
diff --git a/tests/explicit_bzero.c b/tests/explicit_bzero.c
|
|
index 34c60baa8a..9c0e917829 100644
|
|
--- a/tests/explicit_bzero.c
|
|
+++ b/tests/explicit_bzero.c
|
|
@@ -1,4 +1,4 @@
|
|
-/* $OpenBSD: explicit_bzero.c,v 1.6 2014/07/11 01:10:35 matthew Exp $ */
|
|
+/* $OpenBSD: explicit_bzero.c,v 1.7 2021/03/27 11:17:58 bcook Exp $ */
|
|
/*
|
|
* Copyright (c) 2014 Google Inc.
|
|
*
|
|
@@ -18,6 +18,7 @@
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
+#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
@@ -36,19 +37,33 @@ enum {
|
|
SECRETBYTES = SECRETCOUNT * sizeof(secret)
|
|
};
|
|
|
|
-static char altstack[SIGSTKSZ + SECRETBYTES];
|
|
+/*
|
|
+ * As of glibc 2.34, when _GNU_SOURCE is defined, SIGSTKSZ is no longer
|
|
+ * constant on Linux. SIGSTKSZ is redefined to sysconf (_SC_SIGSTKSZ).
|
|
+ */
|
|
+static char *altstack;
|
|
+#define ALTSTACK_SIZE (SIGSTKSZ + SECRETBYTES)
|
|
|
|
static void
|
|
setup_stack(void)
|
|
{
|
|
+ altstack = calloc(1, ALTSTACK_SIZE);
|
|
+ ASSERT_NE(NULL, altstack);
|
|
+
|
|
const stack_t sigstk = {
|
|
.ss_sp = altstack,
|
|
- .ss_size = sizeof(altstack),
|
|
+ .ss_size = ALTSTACK_SIZE
|
|
};
|
|
|
|
ASSERT_EQ(0, sigaltstack(&sigstk, NULL));
|
|
}
|
|
|
|
+static void
|
|
+cleanup_stack(void)
|
|
+{
|
|
+ free(altstack);
|
|
+}
|
|
+
|
|
static void
|
|
assert_on_stack(void)
|
|
{
|
|
@@ -129,7 +144,7 @@ test_without_bzero()
|
|
char buf[SECRETBYTES];
|
|
assert_on_stack();
|
|
populate_secret(buf, sizeof(buf));
|
|
- char *res = memmem(altstack, sizeof(altstack), buf, sizeof(buf));
|
|
+ char *res = memmem(altstack, ALTSTACK_SIZE, buf, sizeof(buf));
|
|
ASSERT_NE(NULL, res);
|
|
return (res);
|
|
}
|
|
@@ -140,7 +155,7 @@ test_with_bzero()
|
|
char buf[SECRETBYTES];
|
|
assert_on_stack();
|
|
populate_secret(buf, sizeof(buf));
|
|
- char *res = memmem(altstack, sizeof(altstack), buf, sizeof(buf));
|
|
+ char *res = memmem(altstack, ALTSTACK_SIZE, buf, sizeof(buf));
|
|
ASSERT_NE(NULL, res);
|
|
explicit_bzero(buf, sizeof(buf));
|
|
return (res);
|
|
@@ -183,15 +198,17 @@ main()
|
|
* on the stack. This sanity checks that call_on_stack() and
|
|
* populate_secret() work as intended.
|
|
*/
|
|
- memset(altstack, 0, sizeof(altstack));
|
|
+ memset(altstack, 0, ALTSTACK_SIZE);
|
|
call_on_stack(do_test_without_bzero);
|
|
|
|
/*
|
|
* Now test with a call to explicit_bzero() and check that we
|
|
* *don't* find any instances of the secret data.
|
|
*/
|
|
- memset(altstack, 0, sizeof(altstack));
|
|
+ memset(altstack, 0, ALTSTACK_SIZE);
|
|
call_on_stack(do_test_with_bzero);
|
|
|
|
+ cleanup_stack();
|
|
+
|
|
return (0);
|
|
}
|