diff options
Diffstat (limited to 'Add-sysrq-option-to-disable-secure-boot-mode.patch')
| -rw-r--r-- | Add-sysrq-option-to-disable-secure-boot-mode.patch | 246 |
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 4600848cf..000000000 --- a/Add-sysrq-option-to-disable-secure-boot-mode.patch +++ /dev/null @@ -1,246 +0,0 @@ -From 16d2ba5d5bc46e67e6aa7a3d113fbcc18c217388 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 f93826b8522c..41679b1aca83 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> -@@ -1261,6 +1266,37 @@ 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 345df9b03aed..dea6a6c4a39b 100644 ---- a/drivers/input/misc/uinput.c -+++ b/drivers/input/misc/uinput.c -@@ -364,6 +364,7 @@ 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 95b330a9ea98..dfa3e154a719 100644 ---- a/drivers/tty/sysrq.c -+++ b/drivers/tty/sysrq.c -@@ -472,6 +472,7 @@ 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 */ -@@ -515,7 +516,7 @@ 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; -@@ -535,11 +536,15 @@ 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); -@@ -571,7 +576,7 @@ 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); - -@@ -652,7 +657,7 @@ 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, -@@ -803,8 +808,10 @@ 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; - } -@@ -1084,7 +1091,7 @@ 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 82ce323b9986..9e534f228945 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 4121345498e0..0ff3cef5df96 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 2b403ab0ef29..7818c110e95c 100644 ---- a/kernel/module.c -+++ b/kernel/module.c -@@ -292,7 +292,7 @@ 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 */ --- -2.4.3 - |