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efi_loader: separate UEFI variable API from implemementation

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Separate the remaining UEFI variable API functions GetNextVariableName and
QueryVariableInfo() from internal functions implementing them.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2020-06-26 17:57:48 +02:00
parent 2a79c352ca
commit 01df8cf336
4 changed files with 133 additions and 79 deletions
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55
lib/efi_loader/efi_variable_tee.c
View file

@ -312,23 +312,9 @@ out:
return ret;
}
/**
* efi_get_next_variable_name() - enumerate the current variable names
*
* @variable_name_size: size of variable_name buffer in bytes
* @variable_name: name of uefi variable's name in u16
* @guid: vendor's guid
*
* This function implements the GetNextVariableName service.
*
* See the Unified Extensible Firmware Interface (UEFI) specification for
* details.
*
* Return: status code
*/
efi_status_t EFIAPI efi_get_next_variable_name(efi_uintn_t *variable_name_size,
u16 *variable_name,
efi_guid_t *guid)
efi_status_t efi_get_next_variable_name_int(efi_uintn_t *variable_name_size,
u16 *variable_name,
efi_guid_t *guid)
{
struct smm_variable_getnext *var_getnext;
efi_uintn_t payload_size;
@ -338,8 +324,6 @@ efi_status_t EFIAPI efi_get_next_variable_name(efi_uintn_t *variable_name_size,
u8 *comm_buf = NULL;
efi_status_t ret;
EFI_ENTRY("%p \"%ls\" %pUl", variable_name_size, variable_name, guid);
if (!variable_name_size || !variable_name || !guid) {
ret = EFI_INVALID_PARAMETER;
goto out;
@ -396,7 +380,7 @@ efi_status_t EFIAPI efi_get_next_variable_name(efi_uintn_t *variable_name_size,
out:
free(comm_buf);
return EFI_EXIT(ret);
return ret;
}
efi_status_t efi_set_variable_int(u16 *variable_name, const efi_guid_t *vendor,
@ -448,37 +432,16 @@ out:
return ret;
}
/**
* efi_query_variable_info() - get information about EFI variables
*
* This function implements the QueryVariableInfo() runtime service.
*
* See the Unified Extensible Firmware Interface (UEFI) specification for
* details.
*
* @attributes: bitmask to select variables to be
* queried
* @maximum_variable_storage_size: maximum size of storage area for the
* selected variable types
* @remaining_variable_storage_size: remaining size of storage are for the
* selected variable types
* @maximum_variable_size: maximum size of a variable of the
* selected type
* Returns: status code
*/
efi_status_t EFIAPI __efi_runtime
efi_query_variable_info(u32 attributes, u64 *max_variable_storage_size,
u64 *remain_variable_storage_size,
u64 *max_variable_size)
efi_status_t efi_query_variable_info_int(u32 attributes,
u64 *max_variable_storage_size,
u64 *remain_variable_storage_size,
u64 *max_variable_size)
{
struct smm_variable_query_info *mm_query_info;
efi_uintn_t payload_size;
efi_status_t ret;
u8 *comm_buf;
EFI_ENTRY("%x %p %p %p", attributes, max_variable_storage_size,
remain_variable_storage_size, max_variable_size);
payload_size = sizeof(*mm_query_info);
comm_buf = setup_mm_hdr((void **)&mm_query_info, payload_size,
SMM_VARIABLE_FUNCTION_QUERY_VARIABLE_INFO,
@ -497,7 +460,7 @@ efi_query_variable_info(u32 attributes, u64 *max_variable_storage_size,
out:
free(comm_buf);
return EFI_EXIT(ret);
return ret;
}
/**