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Unhook system services as we exit.

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If we never find a valid thing to boot, we need to undo the weird things
we've done.

Signed-off-by: Peter Jones <pjones@redhat.com>
This commit is contained in:
Peter Jones 2013-10-04 15:29:29 -04:00
parent 3c0ee51ad8
commit f95ccd0a7f
3 changed files with 14 additions and 7 deletions
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2
replacements.c
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@ -66,7 +66,7 @@ static typeof(systab->BootServices->ExitBootServices) system_exit_boot_services;
extern UINT8 insecure_mode;
static void
void
unhook_system_services(void)
{
if (insecure_mode)

1
replacements.h
View File

@ -39,5 +39,6 @@ extern verification_method_t verification_method;
extern int loader_is_participating;
extern void hook_system_services(EFI_SYSTEM_TABLE *local_systab);
extern void unhook_system_services(void);
#endif /* SHIM_REPLACEMENTS_H */

18
shim.c
View File

@ -1767,12 +1767,6 @@ EFI_STATUS efi_main (EFI_HANDLE image_handle, EFI_SYSTEM_TABLE *passed_systab)
efi_status = init_grub(image_handle);
/*
* If we're back here then clean everything up before exiting
*/
uefi_call_wrapper(BS->UninstallProtocolInterface, 3, handle,
&shim_lock_guid, &shim_lock_interface);
#if defined(OVERRIDE_SECURITY_POLICY)
/*
* Clean up the security protocol hook
@ -1780,6 +1774,18 @@ EFI_STATUS efi_main (EFI_HANDLE image_handle, EFI_SYSTEM_TABLE *passed_systab)
security_policy_uninstall();
#endif
/*
* If we're back here then clean everything up before exiting
*/
uefi_call_wrapper(BS->UninstallProtocolInterface, 3, handle,
&shim_lock_guid, &shim_lock_interface);
/*
* Remove our hooks from system services.
*/
unhook_system_services();
/*
* Free the space allocated for the alternative 2nd stage loader
*/