[PATCH] efi_runtime: add UEFI runtime service GetNextHighMonotonicCount interface

[Ivan Hu]

Signed-off-by: Ivan Hu <ivan.hu at canonical.com>
---
 efi_runtime/efi_runtime.c |   16 ++++++++++++++++
 efi_runtime/efi_runtime.h |    8 ++++++++
 2 files changed, 24 insertions(+)

diff --git a/efi_runtime/efi_runtime.c b/efi_runtime/efi_runtime.c
index 3ae2d8f..d5ff92b 100644
--- a/efi_runtime/efi_runtime.c
+++ b/efi_runtime/efi_runtime.c
@@ -119,6 +119,8 @@ static long efi_runtime_ioctl(struct file *file, unsigned int cmd,
 
 	struct efi_queryvariableinfo __user *pqueryvariableinfo;
 
+	struct efi_getnexthighmonotoniccount __user *pgetnexthighmonotoniccount;
+
 	switch (cmd) {
 	case EFI_RUNTIME_GET_VARIABLE:
 		pgetvariable = (struct efi_getvariable __user *)arg;
@@ -281,6 +283,20 @@ static long efi_runtime_ioctl(struct file *file, unsigned int cmd,
 			return -EINVAL;
 
 		return 0;
+
+	case EFI_RUNTIME_GET_NEXTHIGHMONOTONICCOUNT:
+
+		pgetnexthighmonotoniccount = (struct
+				efi_getnexthighmonotoniccount __user *)arg;
+
+		status = efi.get_next_high_mono_count(pgetnexthighmonotoniccount
+								->HighCount);
+		if (put_user(status, pgetnexthighmonotoniccount->status))
+			return -EFAULT;
+		if (status != EFI_SUCCESS)
+			return -EINVAL;
+
+		return 0;
 	}
 
 	return -ENOTTY;
diff --git a/efi_runtime/efi_runtime.h b/efi_runtime/efi_runtime.h
index cc33878..b8262c0 100644
--- a/efi_runtime/efi_runtime.h
+++ b/efi_runtime/efi_runtime.h
@@ -105,6 +105,11 @@ struct efi_setwakeuptime {
 	uint64_t	*status;
 } __attribute__ ((packed));
 
+struct efi_getnexthighmonotoniccount {
+	uint32_t	*HighCount;
+	uint64_t	*status;
+} __attribute__ ((packed));
+
 /* ioctl calls that are permitted to the /dev/efi_runtime interface. */
 #define EFI_RUNTIME_GET_VARIABLE \
 	_IOWR('p', 0x01, struct efi_getvariable)
@@ -127,4 +132,7 @@ struct efi_setwakeuptime {
 #define EFI_RUNTIME_QUERY_VARIABLEINFO \
 	_IOR('p', 0x08, struct efi_queryvariableinfo)
 
+#define EFI_RUNTIME_GET_NEXTHIGHMONOTONICCOUNT \
+	_IOR('p', 0x09, struct efi_getnexthighmonotoniccount)
+
 #endif /* _EFI_RUNTIME_H_ */
-- 
1.7.9.5