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efi_loader: allow creating new handles

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In efi_install_protocol_interface support creating
a new handle.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Heinrich Schuchardt 2017-08-27 00:51:09 +02:00 • committed by Alexander Graf
parent 842a8e434e
commit 3cc6e3fe95
1 changed files with 20 additions and 2 deletions
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22
lib/efi_loader/efi_boottime.c
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@ -266,6 +266,23 @@ static efi_status_t EFIAPI efi_free_pool_ext(void *buffer)
return EFI_EXIT(r); return EFI_EXIT(r);
} }
static efi_status_t efi_create_handle(void **handle)
{
struct efi_object *obj;
efi_status_t r;
r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES,
sizeof(struct efi_object),
(void **)&obj);
if (r != EFI_SUCCESS)
return r;
memset(obj, 0, sizeof(struct efi_object));
obj->handle = obj;
list_add_tail(&obj->link, &efi_obj_list);
*handle = obj;
return r;
}
/* /*
* Our event capabilities are very limited. Only a small limited * Our event capabilities are very limited. Only a small limited
* number of events is allowed to coexist. * number of events is allowed to coexist.
@ -520,8 +537,9 @@ static efi_status_t EFIAPI efi_install_protocol_interface(void **handle,
/* Create new handle if requested. */ /* Create new handle if requested. */
if (!*handle) { if (!*handle) {
r = EFI_OUT_OF_RESOURCES; r = efi_create_handle(handle);
goto out; if (r != EFI_SUCCESS)
goto out;
} }
/* Find object. */ /* Find object. */
list_for_each(lhandle, &efi_obj_list) { list_for_each(lhandle, &efi_obj_list) {