Module Name: src
Committed By: kamil
Date: Sat May 25 03:22:53 UTC 2019
Modified Files:
src/tests/lib/libc/sys: t_ptrace_wait.h
Log Message:
Add get_user_va0_disable() in t_ptrace_wait.h
Add a utility function to check vm.user_va0_disable.
To generate a diff of this commit:
cvs rdiff -u -r1.16 -r1.17 src/tests/lib/libc/sys/t_ptrace_wait.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/tests/lib/libc/sys/t_ptrace_wait.h
diff -u src/tests/lib/libc/sys/t_ptrace_wait.h:1.16 src/tests/lib/libc/sys/t_ptrace_wait.h:1.17
--- src/tests/lib/libc/sys/t_ptrace_wait.h:1.16 Thu Apr 25 19:15:23 2019
+++ src/tests/lib/libc/sys/t_ptrace_wait.h Sat May 25 03:22:53 2019
@@ -1,4 +1,4 @@
-/* $NetBSD: t_ptrace_wait.h,v 1.16 2019/04/25 19:15:23 kamil Exp $ */
+/* $NetBSD: t_ptrace_wait.h,v 1.17 2019/05/25 03:22:53 kamil Exp $ */
/*-
* Copyright (c) 2016, 2017, 2018, 2019 The NetBSD Foundation, Inc.
@@ -553,6 +553,26 @@ can_we_set_dbregs(void)
#endif
static bool __used
+get_user_va0_disable(void)
+{
+ static int user_va0_disable = -1;
+ size_t user_va0_disable_len = sizeof(user_va0_disable);
+
+ if (user_va0_disable == -1) {
+ if (sysctlbyname("vm.user_va0_disable",
+ &user_va0_disable, &user_va0_disable_len, NULL, 0)
+ == -1) {
+ return true;
+ }
+ }
+
+ if (user_va0_disable > 0)
+ return true;
+ else
+ return false;
+}
+
+static bool __used
can_we_write_to_text(pid_t pid)
{
int mib[3];
