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-rw-r--r--Add-sysrq-option-to-disable-secure-boot-mode.patch246
1 files changed, 0 insertions, 246 deletions
diff --git a/Add-sysrq-option-to-disable-secure-boot-mode.patch b/Add-sysrq-option-to-disable-secure-boot-mode.patch
deleted file mode 100644
index edd6039f9..000000000
--- a/Add-sysrq-option-to-disable-secure-boot-mode.patch
+++ /dev/null
@@ -1,246 +0,0 @@
-From d9e0379e8d3cb51efe4e2b1a5a60c52c2c40bdfb Mon Sep 17 00:00:00 2001
-From: Kyle McMartin <kyle@redhat.com>
-Date: Fri, 30 Aug 2013 09:28:51 -0400
-Subject: [PATCH 20/20] Add sysrq option to disable secure boot mode
-
-Bugzilla: N/A
-Upstream-status: Fedora mustard
----
- arch/x86/kernel/setup.c | 36 ++++++++++++++++++++++++++++++++++++
- drivers/input/misc/uinput.c | 1 +
- drivers/tty/sysrq.c | 19 +++++++++++++------
- include/linux/input.h | 5 +++++
- include/linux/sysrq.h | 8 +++++++-
- kernel/debug/kdb/kdb_main.c | 2 +-
- kernel/module.c | 2 +-
- 7 files changed, 64 insertions(+), 9 deletions(-)
-
-diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
-index b93183336674..dab2882927c2 100644
---- a/arch/x86/kernel/setup.c
-+++ b/arch/x86/kernel/setup.c
-@@ -70,6 +70,11 @@
- #include <linux/tboot.h>
- #include <linux/jiffies.h>
-
-+#include <linux/fips.h>
-+#include <linux/cred.h>
-+#include <linux/sysrq.h>
-+#include <linux/init_task.h>
-+
- #include <video/edid.h>
-
- #include <asm/mtrr.h>
-@@ -1286,6 +1291,37 @@ void __init i386_reserve_resources(void)
-
- #endif /* CONFIG_X86_32 */
-
-+#ifdef CONFIG_MAGIC_SYSRQ
-+#ifdef CONFIG_MODULE_SIG
-+extern bool sig_enforce;
-+#endif
-+
-+static void sysrq_handle_secure_boot(int key)
-+{
-+ if (!efi_enabled(EFI_SECURE_BOOT))
-+ return;
-+
-+ pr_info("Secure boot disabled\n");
-+#ifdef CONFIG_MODULE_SIG
-+ sig_enforce = fips_enabled;
-+#endif
-+}
-+static struct sysrq_key_op secure_boot_sysrq_op = {
-+ .handler = sysrq_handle_secure_boot,
-+ .help_msg = "unSB(x)",
-+ .action_msg = "Disabling Secure Boot restrictions",
-+ .enable_mask = SYSRQ_DISABLE_USERSPACE,
-+};
-+static int __init secure_boot_sysrq(void)
-+{
-+ if (efi_enabled(EFI_SECURE_BOOT))
-+ register_sysrq_key('x', &secure_boot_sysrq_op);
-+ return 0;
-+}
-+late_initcall(secure_boot_sysrq);
-+#endif /*CONFIG_MAGIC_SYSRQ*/
-+
-+
- static struct notifier_block kernel_offset_notifier = {
- .notifier_call = dump_kernel_offset
- };
-diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c
-index 92595b98e7ed..894ed3f74f04 100644
---- a/drivers/input/misc/uinput.c
-+++ b/drivers/input/misc/uinput.c
-@@ -379,6 +379,7 @@ static int uinput_allocate_device(struct uinput_device *udev)
- if (!udev->dev)
- return -ENOMEM;
-
-+ udev->dev->flags |= INPUTDEV_FLAGS_SYNTHETIC;
- udev->dev->event = uinput_dev_event;
- input_set_drvdata(udev->dev, udev);
-
-diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
-index 52bbd27e93ae..594bd731253a 100644
---- a/drivers/tty/sysrq.c
-+++ b/drivers/tty/sysrq.c
-@@ -479,6 +479,7 @@ static struct sysrq_key_op *sysrq_key_table[36] = {
- /* x: May be registered on mips for TLB dump */
- /* x: May be registered on ppc/powerpc for xmon */
- /* x: May be registered on sparc64 for global PMU dump */
-+ /* x: May be registered on x86_64 for disabling secure boot */
- NULL, /* x */
- /* y: May be registered on sparc64 for global register dump */
- NULL, /* y */
-@@ -522,7 +523,7 @@ static void __sysrq_put_key_op(int key, struct sysrq_key_op *op_p)
- sysrq_key_table[i] = op_p;
- }
-
--void __handle_sysrq(int key, bool check_mask)
-+void __handle_sysrq(int key, int from)
- {
- struct sysrq_key_op *op_p;
- int orig_log_level;
-@@ -542,11 +543,15 @@ void __handle_sysrq(int key, bool check_mask)
-
- op_p = __sysrq_get_key_op(key);
- if (op_p) {
-+ /* Ban synthetic events from some sysrq functionality */
-+ if ((from == SYSRQ_FROM_PROC || from == SYSRQ_FROM_SYNTHETIC) &&
-+ op_p->enable_mask & SYSRQ_DISABLE_USERSPACE)
-+ printk("This sysrq operation is disabled from userspace.\n");
- /*
- * Should we check for enabled operations (/proc/sysrq-trigger
- * should not) and is the invoked operation enabled?
- */
-- if (!check_mask || sysrq_on_mask(op_p->enable_mask)) {
-+ if (from == SYSRQ_FROM_KERNEL || sysrq_on_mask(op_p->enable_mask)) {
- pr_cont("%s\n", op_p->action_msg);
- console_loglevel = orig_log_level;
- op_p->handler(key);
-@@ -578,7 +583,7 @@ void __handle_sysrq(int key, bool check_mask)
- void handle_sysrq(int key)
- {
- if (sysrq_on())
-- __handle_sysrq(key, true);
-+ __handle_sysrq(key, SYSRQ_FROM_KERNEL);
- }
- EXPORT_SYMBOL(handle_sysrq);
-
-@@ -659,7 +664,7 @@ static void sysrq_do_reset(unsigned long _state)
- static void sysrq_handle_reset_request(struct sysrq_state *state)
- {
- if (state->reset_requested)
-- __handle_sysrq(sysrq_xlate[KEY_B], false);
-+ __handle_sysrq(sysrq_xlate[KEY_B], SYSRQ_FROM_KERNEL);
-
- if (sysrq_reset_downtime_ms)
- mod_timer(&state->keyreset_timer,
-@@ -810,8 +815,10 @@ static bool sysrq_handle_keypress(struct sysrq_state *sysrq,
-
- default:
- if (sysrq->active && value && value != 2) {
-+ int from = sysrq->handle.dev->flags & INPUTDEV_FLAGS_SYNTHETIC ?
-+ SYSRQ_FROM_SYNTHETIC : 0;
- sysrq->need_reinject = false;
-- __handle_sysrq(sysrq_xlate[code], true);
-+ __handle_sysrq(sysrq_xlate[code], from);
- }
- break;
- }
-@@ -1095,7 +1102,7 @@ static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf,
-
- if (get_user(c, buf))
- return -EFAULT;
-- __handle_sysrq(c, false);
-+ __handle_sysrq(c, SYSRQ_FROM_PROC);
- }
-
- return count;
-diff --git a/include/linux/input.h b/include/linux/input.h
-index a65e3b24fb18..8b0357175049 100644
---- a/include/linux/input.h
-+++ b/include/linux/input.h
-@@ -42,6 +42,7 @@ struct input_value {
- * @phys: physical path to the device in the system hierarchy
- * @uniq: unique identification code for the device (if device has it)
- * @id: id of the device (struct input_id)
-+ * @flags: input device flags (SYNTHETIC, etc.)
- * @propbit: bitmap of device properties and quirks
- * @evbit: bitmap of types of events supported by the device (EV_KEY,
- * EV_REL, etc.)
-@@ -124,6 +125,8 @@ struct input_dev {
- const char *uniq;
- struct input_id id;
-
-+ unsigned int flags;
-+
- unsigned long propbit[BITS_TO_LONGS(INPUT_PROP_CNT)];
-
- unsigned long evbit[BITS_TO_LONGS(EV_CNT)];
-@@ -190,6 +193,8 @@ struct input_dev {
- };
- #define to_input_dev(d) container_of(d, struct input_dev, dev)
-
-+#define INPUTDEV_FLAGS_SYNTHETIC 0x000000001
-+
- /*
- * Verify that we are in sync with input_device_id mod_devicetable.h #defines
- */
-diff --git a/include/linux/sysrq.h b/include/linux/sysrq.h
-index 387fa7d05c98..4b07e30b3279 100644
---- a/include/linux/sysrq.h
-+++ b/include/linux/sysrq.h
-@@ -28,6 +28,8 @@
- #define SYSRQ_ENABLE_BOOT 0x0080
- #define SYSRQ_ENABLE_RTNICE 0x0100
-
-+#define SYSRQ_DISABLE_USERSPACE 0x00010000
-+
- struct sysrq_key_op {
- void (*handler)(int);
- char *help_msg;
-@@ -42,8 +44,12 @@ struct sysrq_key_op {
- * are available -- else NULL's).
- */
-
-+#define SYSRQ_FROM_KERNEL 0x0001
-+#define SYSRQ_FROM_PROC 0x0002
-+#define SYSRQ_FROM_SYNTHETIC 0x0004
-+
- void handle_sysrq(int key);
--void __handle_sysrq(int key, bool check_mask);
-+void __handle_sysrq(int key, int from);
- int register_sysrq_key(int key, struct sysrq_key_op *op);
- int unregister_sysrq_key(int key, struct sysrq_key_op *op);
- struct sysrq_key_op *__sysrq_get_key_op(int key);
-diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
-index 2a20c0dfdafc..3d17205dab77 100644
---- a/kernel/debug/kdb/kdb_main.c
-+++ b/kernel/debug/kdb/kdb_main.c
-@@ -1968,7 +1968,7 @@ static int kdb_sr(int argc, const char **argv)
- return KDB_ARGCOUNT;
-
- kdb_trap_printk++;
-- __handle_sysrq(*argv[1], check_mask);
-+ __handle_sysrq(*argv[1], check_mask & SYSRQ_FROM_KERNEL);
- kdb_trap_printk--;
-
- return 0;
-diff --git a/kernel/module.c b/kernel/module.c
-index cb1f1da69bf4..5933c27ba19e 100644
---- a/kernel/module.c
-+++ b/kernel/module.c
-@@ -270,7 +270,7 @@ static void module_assert_mutex_or_preempt(void)
- #endif
- }
-
--static bool sig_enforce = IS_ENABLED(CONFIG_MODULE_SIG_FORCE);
-+bool sig_enforce = IS_ENABLED(CONFIG_MODULE_SIG_FORCE);
- #ifndef CONFIG_MODULE_SIG_FORCE
- module_param(sig_enforce, bool_enable_only, 0644);
- #endif /* !CONFIG_MODULE_SIG_FORCE */
---
-2.9.3
-