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efi_loader: correct signature of GetPosition, SetPosition

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The UEFI spec requires that file positions are passed as u64 in
GetPosition() and SetPosition().

Check if the file handle points to a directory in GetPosition().

Provide a unit test for GetPosition() and SetPosition().

Fix Coverity warning CID 184079 (CONSTANT_EXPRESSION_RESULT).

Add comments.

Fixes: b6dd577737 ("efi_loader: use correct types in EFI_FILE_PROTOCOL")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Heinrich Schuchardt 2018-10-07 05:26:26 +02:00 • committed by Alexander Graf
parent 3ce7829792
commit 0801d4d2fb
3 changed files with 61 additions and 12 deletions
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4
include/efi_api.h
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@ -914,9 +914,9 @@ struct efi_file_handle {
efi_status_t (EFIAPI *write)(struct efi_file_handle *file,
efi_uintn_t *buffer_size, void *buffer);
efi_status_t (EFIAPI *getpos)(struct efi_file_handle *file,
efi_uintn_t *pos);
u64 *pos);
efi_status_t (EFIAPI *setpos)(struct efi_file_handle *file,
efi_uintn_t pos);
u64 pos);
efi_status_t (EFIAPI *getinfo)(struct efi_file_handle *file,
const efi_guid_t *info_type, efi_uintn_t *buffer_size,
void *buffer);