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Date: Mon, 17 Apr 2017 02:07:06 -0400
From: Matt Brown <matt@...tt.com>
To: jmorris@...ei.org,
gregkh@...uxfoundation.org,
akpm@...ux-foundation.org
Cc: linux-security-module@...r.kernel.org,
linux-kernel@...r.kernel.org,
kernel-hardening@...ts.openwall.com,
Matt Brown <matt@...tt.com>
Subject: [PATCH 4/4] added kernel.tiocsti_restrict sysctl
this patch depends on patches 1, 2 and 3
Allow CONFIG_SECURITY_TIOCSTI_RESTRICT to be controlled via sysctl
Signed-off-by: Matt Brown <matt@...tt.com>
---
kernel/sysctl.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index acf0a5a..68d1363 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -67,6 +67,7 @@
#include <linux/kexec.h>
#include <linux/bpf.h>
#include <linux/mount.h>
+#include <linux/tty.h>
#include <linux/uaccess.h>
#include <asm/processor.h>
@@ -833,6 +834,17 @@ static struct ctl_table kern_table[] = {
.extra2 = &two,
},
#endif
+#if defined CONFIG_TTY
+ {
+ .procname = "tiocsti_restrict",
+ .data = &tiocsti_restrict,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax_sysadmin,
+ .extra1 = &zero,
+ .extra2 = &one,
+ },
+#endif
{
.procname = "ngroups_max",
.data = &ngroups_max,
--
2.10.2
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