[PATCH v2 1/2] efi_loader: fix set_capsule_result()

[Heinrich Schuchardt]

The log category must be LOG_CATEGORY LOGC_EFI.

efi_set_variable() should be called with EFI_CALL(). Use
efi_set_variable_int() instead.

A log text "Updating ..." if SetVariable() fails does not make sense for a
variable that is not required to be preexisting.

CapsuleLast should always be immediately updated.

Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
---
v2:
	don't update OsIndications in set_capsule_result()
	update CapsuleLast immediately
---
 lib/efi_loader/efi_capsule.c | 39 +++++++++++++++++++-----------------
 1 file changed, 21 insertions(+), 18 deletions(-)

diff --git a/lib/efi_loader/efi_capsule.c b/lib/efi_loader/efi_capsule.c
index 2c37a0d97b..f87ef2a514 100644
--- a/lib/efi_loader/efi_capsule.c
+++ b/lib/efi_loader/efi_capsule.c
@@ -6,6 +6,8 @@
  *			Author: AKASHI Takahiro
  */

+#define LOG_CATEGORY LOGC_EFI
+
 #include <common.h>
 #include <efi_loader.h>
 #include <efi_variable.h>
@@ -95,13 +97,25 @@ void set_capsule_result(int index, struct efi_capsule_header *capsule,
 	else
 		memset(&result.capsule_processed, 0, sizeof(time));
 	result.capsule_status = return_status;
-	ret = efi_set_variable(variable_name16, &efi_guid_capsule_report,
-			       EFI_VARIABLE_NON_VOLATILE |
-			       EFI_VARIABLE_BOOTSERVICE_ACCESS |
-			       EFI_VARIABLE_RUNTIME_ACCESS,
-			       sizeof(result), &result);
-	if (ret)
-		log_err("EFI: creating %ls failed\n", variable_name16);
+	ret = efi_set_variable_int(variable_name16, &efi_guid_capsule_report,
+				   EFI_VARIABLE_NON_VOLATILE |
+				   EFI_VARIABLE_BOOTSERVICE_ACCESS |
+				   EFI_VARIABLE_RUNTIME_ACCESS,
+				   sizeof(result), &result, false);
+	if (ret != EFI_SUCCESS) {
+		log_err("Setting %ls failed\n", variable_name16);
+		return;
+	}
+
+	/* Variable CapsuleLast must not include terminating 0x0000 */
+	ret = efi_set_variable_int(L"CapsuleLast", &efi_guid_capsule_report,
+				   EFI_VARIABLE_READ_ONLY |
+				   EFI_VARIABLE_NON_VOLATILE |
+				   EFI_VARIABLE_BOOTSERVICE_ACCESS |
+				   EFI_VARIABLE_RUNTIME_ACCESS,
+				   22, variable_name16, false);
+	if (ret != EFI_SUCCESS)
+		log_err("Setting %ls failed\n", L"CapsuleLast");
 }

 #ifdef CONFIG_EFI_CAPSULE_FIRMWARE_MANAGEMENT
@@ -988,7 +1002,6 @@ efi_status_t efi_launch_capsules(void)
 	struct efi_capsule_header *capsule = NULL;
 	u16 **files;
 	unsigned int nfiles, index, i;
-	u16 variable_name16[12];
 	efi_status_t ret;

 	if (!check_run_capsules())
@@ -1045,16 +1058,6 @@ efi_status_t efi_launch_capsules(void)
 		free(files[i]);
 	free(files);

-	/* CapsuleLast */
-	efi_create_indexed_name(variable_name16, sizeof(variable_name16),
-				"Capsule", index - 1);
-	efi_set_variable_int(L"CapsuleLast", &efi_guid_capsule_report,
-			     EFI_VARIABLE_READ_ONLY |
-			     EFI_VARIABLE_NON_VOLATILE |
-			     EFI_VARIABLE_BOOTSERVICE_ACCESS |
-			     EFI_VARIABLE_RUNTIME_ACCESS,
-			     22, variable_name16, false);
-
 	return ret;
 }
 #endif /* CONFIG_EFI_CAPSULE_ON_DISK */
--
2.30.2