Add a function that sets an EFI variable to a string value.
The string is converted from UTF-8 to UTF-16.
Signed-off-by: Oliver Steffen <ostef...@redhat.com>
Reviewed-by: Daniel Kiper <daniel.ki...@oracle.com>
---
grub-core/kern/efi/efi.c | 22 ++++++++++++++++++++++
include/grub/efi/efi.h | 3 +++
2 files changed, 25 insertions(+)
diff --git a/grub-core/kern/efi/efi.c b/grub-core/kern/efi/efi.c
index 0583a7b5c..6b0aef115 100644
--- a/grub-core/kern/efi/efi.c
+++ b/grub-core/kern/efi/efi.c
@@ -286,6 +286,28 @@ grub_efi_get_variable_with_attributes (const char *var,
return status;
}
+grub_err_t
+grub_efi_set_variable_to_string (const char *name, const grub_guid_t *guid,
+ const char *value, grub_efi_uint32_t
attributes)
+{
+ grub_efi_char16_t *value_16;
+ grub_ssize_t len16;
+ grub_err_t status;
+
+ len16 = grub_utf8_to_utf16_alloc (value, &value_16, NULL);
+
+ if (len16 < 0)
+ return grub_errno;
+
+ status = grub_efi_set_variable_with_attributes (name, guid,
+ (void *) value_16, (len16 + 1) * sizeof (value_16[0]),
+ attributes);
+
+ grub_free (value_16);
+
+ return status;
+}
+
grub_efi_status_t
grub_efi_get_variable (const char *var, const grub_guid_t *guid,
grub_size_t *datasize_out, void **data_out)
diff --git a/include/grub/efi/efi.h b/include/grub/efi/efi.h
index 3d056a0a4..cd977cbbc 100644
--- a/include/grub/efi/efi.h
+++ b/include/grub/efi/efi.h
@@ -108,6 +108,9 @@ EXPORT_FUNC (grub_efi_set_variable) (const char *var,
const grub_guid_t *guid,
void *data,
grub_size_t datasize);
+grub_err_t
+EXPORT_FUNC (grub_efi_set_variable_to_string) (const char *name, const
grub_guid_t *guid,
+ const char *value,
grub_efi_uint32_t attributes);
int
EXPORT_FUNC (grub_efi_compare_device_paths) (const grub_efi_device_path_t *dp1,
const grub_efi_device_path_t *dp2);
--
2.40.1
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