diff options
| author | xypron.glpk@gmx.de <xypron.glpk@gmx.de> | 2017-07-11 20:06:17 (GMT) |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2017-07-19 12:14:38 (GMT) |
| commit | 4b6ed0d7a1d915524dd1ecccf023d519d7022a49 (patch) | |
| tree | 27aa2167ff76c8342354c1ac87178bdc6d5133d6 /lib | |
| parent | e0549f8a174be5cf9526ec2d072cadc17a54a3e5 (diff) | |
| download | u-boot-fsl-qoriq-4b6ed0d7a1d915524dd1ecccf023d519d7022a49.tar.xz | |
efi_loader: implement UninstallProtocolInterface
Without the patch efi_uninstall_protocol_interface always returns an
error.
With the patch protocols without interface can be uninstalled.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/efi_loader/efi_boottime.c | 40 |
1 files changed, 38 insertions, 2 deletions
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index a6325ba..0ad7ade 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -371,8 +371,44 @@ static efi_status_t EFIAPI efi_reinstall_protocol_interface(void *handle, static efi_status_t EFIAPI efi_uninstall_protocol_interface(void *handle, efi_guid_t *protocol, void *protocol_interface) { + struct list_head *lhandle; + int i; + efi_status_t r = EFI_NOT_FOUND; + EFI_ENTRY("%p, %p, %p", handle, protocol, protocol_interface); - return EFI_EXIT(EFI_NOT_FOUND); + + if (!handle || !protocol) { + r = EFI_INVALID_PARAMETER; + goto out; + } + + list_for_each(lhandle, &efi_obj_list) { + struct efi_object *efiobj; + efiobj = list_entry(lhandle, struct efi_object, link); + + if (efiobj->handle != handle) + continue; + + for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { + struct efi_handler *handler = &efiobj->protocols[i]; + const efi_guid_t *hprotocol = handler->guid; + + if (!hprotocol) + continue; + if (!guidcmp(hprotocol, protocol)) { + if (handler->protocol_interface) { + r = EFI_ACCESS_DENIED; + } else { + handler->guid = 0; + r = EFI_SUCCESS; + } + goto out; + } + } + } + +out: + return EFI_EXIT(r); } static efi_status_t EFIAPI efi_register_protocol_notify(efi_guid_t *protocol, @@ -813,7 +849,7 @@ static efi_status_t EFIAPI efi_open_protocol( struct efi_handler *handler = &efiobj->protocols[i]; const efi_guid_t *hprotocol = handler->guid; if (!hprotocol) - break; + continue; if (!guidcmp(hprotocol, protocol)) { if (attributes != EFI_OPEN_PROTOCOL_TEST_PROTOCOL) { |