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efi_loader: check CreateEvent() parameters

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Add some of the invalid parameter checks described in the UEFI
specification for CreateEvent().  This does not include checking
the validity of the type and tpl parameters.

Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Acked-By: Heinrich Schuchardt <xypron.glpk@gmx.de>
[agraf: fix checkpatch.pl indent warning]
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Jonathan Gray 2017-03-12 19:26:07 +11:00 committed by Alexander Graf
parent 37a980b3fa
commit a95343b8d3
1 changed files with 10 additions and 0 deletions
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10
lib/efi_loader/efi_boottime.c
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@ -189,6 +189,16 @@ static efi_status_t EFIAPI efi_create_event(
return EFI_EXIT(EFI_OUT_OF_RESOURCES);
}
if (event == NULL)
return EFI_EXIT(EFI_INVALID_PARAMETER);
if ((type & EVT_NOTIFY_SIGNAL) && (type & EVT_NOTIFY_WAIT))
return EFI_EXIT(EFI_INVALID_PARAMETER);
if ((type & (EVT_NOTIFY_SIGNAL|EVT_NOTIFY_WAIT)) &&
notify_function == NULL)
return EFI_EXIT(EFI_INVALID_PARAMETER);
efi_event.type = type;
efi_event.notify_tpl = notify_tpl;
efi_event.notify_function = notify_function;