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efi_loader: QueryMode() check parameters

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Check the parameters of EFI_GRAPHICS_OUTPUT_PROTOCOL.QueryMode().

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2019-06-15 12:52:35 +02:00
parent 3352b306bf
commit 997c2ce5cf
1 changed files with 8 additions and 1 deletions
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9
lib/efi_loader/efi_gop.c
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@ -41,14 +41,21 @@ static efi_status_t EFIAPI gop_query_mode(struct efi_gop *this, u32 mode_number,
struct efi_gop_mode_info **info) struct efi_gop_mode_info **info)
{ {
struct efi_gop_obj *gopobj; struct efi_gop_obj *gopobj;
efi_status_t ret = EFI_SUCCESS;
EFI_ENTRY("%p, %x, %p, %p", this, mode_number, size_of_info, info); EFI_ENTRY("%p, %x, %p, %p", this, mode_number, size_of_info, info);
if (!this || !size_of_info || !info || mode_number) {
ret = EFI_INVALID_PARAMETER;
goto out;
}
gopobj = container_of(this, struct efi_gop_obj, ops); gopobj = container_of(this, struct efi_gop_obj, ops);
*size_of_info = sizeof(gopobj->info); *size_of_info = sizeof(gopobj->info);
*info = &gopobj->info; *info = &gopobj->info;
return EFI_EXIT(EFI_SUCCESS); out:
return EFI_EXIT(ret);
} }
static efi_status_t EFIAPI gop_set_mode(struct efi_gop *this, u32 mode_number) static efi_status_t EFIAPI gop_set_mode(struct efi_gop *this, u32 mode_number)