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-rw-r--r--src/interface/efi/efi_veto.c94
1 files changed, 58 insertions, 36 deletions
diff --git a/src/interface/efi/efi_veto.c b/src/interface/efi/efi_veto.c
index e479127..79c1575 100644
--- a/src/interface/efi/efi_veto.c
+++ b/src/interface/efi/efi_veto.c
@@ -37,8 +37,8 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
*
*/
-/** A driver veto */
-struct efi_veto {
+/** A driver veto candidate */
+struct efi_veto_candidate {
/** Veto name (for debugging) */
const char *name;
/**
@@ -57,14 +57,27 @@ struct efi_veto {
const char *manufacturer, const CHAR16 *name );
};
+/** A driver veto */
+struct efi_veto {
+ /** Driver binding handle */
+ EFI_HANDLE driver;
+ /** Driving binding protocol */
+ EFI_DRIVER_BINDING_PROTOCOL *binding;
+ /** Image handle */
+ EFI_HANDLE image;
+ /** Loaded image protocol */
+ EFI_LOADED_IMAGE_PROTOCOL *loaded;
+};
+
/**
* Unload an EFI driver
*
- * @v driver Driver binding handle
+ * @v veto Driver veto
* @ret rc Return status code
*/
-static int efi_veto_unload ( EFI_HANDLE driver ) {
+static int efi_veto_unload ( struct efi_veto *veto ) {
EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
+ EFI_HANDLE driver = veto->driver;
EFI_STATUS efirc;
int rc;
@@ -82,11 +95,12 @@ static int efi_veto_unload ( EFI_HANDLE driver ) {
/**
* Disconnect an EFI driver from all handles
*
- * @v driver Driver binding handle
+ * @v veto Driver veto
* @ret rc Return status code
*/
-static int efi_veto_disconnect ( EFI_HANDLE driver ) {
+static int efi_veto_disconnect ( struct efi_veto *veto ) {
EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
+ EFI_HANDLE driver = veto->driver;
EFI_HANDLE *handles;
EFI_HANDLE handle;
UINTN count;
@@ -131,11 +145,12 @@ static int efi_veto_disconnect ( EFI_HANDLE driver ) {
/**
* Uninstall an EFI driver binding protocol
*
- * @v driver Driver binding handle
+ * @v veto Driver veto
* @ret rc Return status code
*/
-static int efi_veto_uninstall ( EFI_HANDLE driver ) {
+static int efi_veto_uninstall ( struct efi_veto *veto ) {
EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
+ EFI_HANDLE driver = veto->driver;
union {
EFI_DRIVER_BINDING_PROTOCOL *binding;
void *interface;
@@ -178,14 +193,15 @@ static int efi_veto_uninstall ( EFI_HANDLE driver ) {
/**
* Close protocol on handle potentially opened by an EFI driver
*
- * @v driver Driver binding handle
+ * @v veto Driver veto
* @v handle Potentially opened handle
* @v protocol Opened protocol
* @ret rc Return status code
*/
-static int efi_veto_close_protocol ( EFI_HANDLE driver, EFI_HANDLE handle,
+static int efi_veto_close_protocol ( struct efi_veto *veto, EFI_HANDLE handle,
EFI_GUID *protocol ) {
EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
+ EFI_HANDLE driver = veto->driver;
EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *openers;
EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *opener;
EFI_HANDLE controller;
@@ -235,12 +251,13 @@ static int efi_veto_close_protocol ( EFI_HANDLE driver, EFI_HANDLE handle,
/**
* Close handle potentially opened by an EFI driver
*
- * @v driver Driver binding handle
+ * @v veto Driver veto
* @v handle Potentially opened handle
* @ret rc Return status code
*/
-static int efi_veto_close_handle ( EFI_HANDLE driver, EFI_HANDLE handle ) {
+static int efi_veto_close_handle ( struct efi_veto *veto, EFI_HANDLE handle ) {
EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
+ EFI_HANDLE driver = veto->driver;
EFI_GUID **protocols;
UINTN count;
unsigned int i;
@@ -260,7 +277,7 @@ static int efi_veto_close_handle ( EFI_HANDLE driver, EFI_HANDLE handle ) {
/* Close each protocol */
for ( i = 0 ; i < count ; i++ ) {
- if ( ( rc = efi_veto_close_protocol ( driver, handle,
+ if ( ( rc = efi_veto_close_protocol ( veto, handle,
protocols[i] ) ) != 0 )
goto err_close;
}
@@ -277,11 +294,12 @@ static int efi_veto_close_handle ( EFI_HANDLE driver, EFI_HANDLE handle ) {
/**
* Close all remaining handles opened by an EFI driver
*
- * @v driver Driver binding handle
+ * @v veto Driver veto
* @ret rc Return status code
*/
-static int efi_veto_close ( EFI_HANDLE driver ) {
+static int efi_veto_close ( struct efi_veto *veto ) {
EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
+ EFI_HANDLE driver = veto->driver;
EFI_HANDLE *handles;
UINTN count;
unsigned int i;
@@ -299,8 +317,7 @@ static int efi_veto_close ( EFI_HANDLE driver ) {
/* Close each handle */
for ( i = 0 ; i < count ; i++ ) {
- if ( ( rc = efi_veto_close_handle ( driver,
- handles[i] ) ) != 0 )
+ if ( ( rc = efi_veto_close_handle ( veto, handles[i] ) ) != 0 )
goto err_close;
}
@@ -318,22 +335,23 @@ static int efi_veto_close ( EFI_HANDLE driver ) {
/**
* Terminate an EFI driver with extreme prejudice
*
- * @v driver Driver binding handle
+ * @v veto Driver veto
* @ret rc Return status code
*/
-static int efi_veto_destroy ( EFI_HANDLE driver ) {
+static int efi_veto_destroy ( struct efi_veto *veto ) {
+ EFI_HANDLE driver = veto->driver;
int rc;
/* Disconnect driver from all handles */
- if ( ( rc = efi_veto_disconnect ( driver ) ) != 0 )
+ if ( ( rc = efi_veto_disconnect ( veto ) ) != 0 )
return rc;
/* Uninstall driver binding protocol */
- if ( ( rc = efi_veto_uninstall ( driver ) ) != 0 )
+ if ( ( rc = efi_veto_uninstall ( veto ) ) != 0 )
return rc;
/* Close any remaining opened handles */
- if ( ( rc = efi_veto_close ( driver ) ) != 0 )
+ if ( ( rc = efi_veto_close ( veto ) ) != 0 )
return rc;
DBGC ( driver, "EFIVETO %s forcibly removed\n",
@@ -344,18 +362,18 @@ static int efi_veto_destroy ( EFI_HANDLE driver ) {
/**
* Veto an EFI driver
*
- * @v driver Driver binding handle
+ * @v veto Driver veto
* @ret rc Return status code
*/
-static int efi_veto_driver ( EFI_HANDLE driver ) {
+static int efi_veto_driver ( struct efi_veto *veto ) {
int rc;
/* Try gracefully unloading the driver */
- if ( ( rc = efi_veto_unload ( driver ) ) == 0 )
+ if ( ( rc = efi_veto_unload ( veto ) ) == 0 )
return 0;
/* If that fails, use a hammer */
- if ( ( rc = efi_veto_destroy ( driver ) ) == 0 )
+ if ( ( rc = efi_veto_destroy ( veto ) ) == 0 )
return 0;
return rc;
@@ -467,7 +485,7 @@ efi_veto_vmware_uefipxebc ( EFI_DRIVER_BINDING_PROTOCOL *binding __unused,
}
/** Driver vetoes */
-static struct efi_veto efi_vetoes[] = {
+static struct efi_veto_candidate efi_vetoes[] = {
{
.name = "Ip4Config",
.veto = efi_veto_ip4config,
@@ -487,11 +505,11 @@ static struct efi_veto efi_vetoes[] = {
*
* @v driver Driver binding handle
* @v manufacturer Manufacturer name, if present
- * @ret veto Driver veto, or NULL
+ * @ret veto Driver veto to fill in
* @ret rc Return status code
*/
static int efi_veto_find ( EFI_HANDLE driver, const char *manufacturer,
- struct efi_veto **veto ) {
+ struct efi_veto *veto ) {
EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
union {
EFI_DRIVER_BINDING_PROTOCOL *binding;
@@ -515,7 +533,7 @@ static int efi_veto_find ( EFI_HANDLE driver, const char *manufacturer,
efi_handle_name ( driver ) );
/* Mark as not vetoed */
- *veto = NULL;
+ memset ( veto, 0, sizeof ( *veto ) );
/* Open driver binding protocol */
if ( ( efirc = bs->OpenProtocol (
@@ -567,7 +585,13 @@ static int efi_veto_find ( EFI_HANDLE driver, const char *manufacturer,
sizeof ( efi_vetoes[0] ) ) ; i++ ) {
if ( efi_vetoes[i].veto ( binding.binding, loaded.loaded,
wtf.wtf, manufacturer, name ) ) {
- *veto = &efi_vetoes[i];
+ DBGC ( driver, "EFIVETO %s is vetoed (%s)\n",
+ efi_handle_name ( driver ),
+ efi_vetoes[i].name );
+ veto->driver = driver;
+ veto->binding = binding.binding;
+ veto->image = image;
+ veto->loaded = loaded.loaded;
break;
}
}
@@ -595,7 +619,7 @@ static int efi_veto_find ( EFI_HANDLE driver, const char *manufacturer,
*/
void efi_veto ( void ) {
EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
- struct efi_veto *veto;
+ struct efi_veto veto;
EFI_HANDLE *drivers;
EFI_HANDLE driver;
UINTN num_drivers;
@@ -629,11 +653,9 @@ void efi_veto ( void ) {
efi_handle_name ( driver ), strerror ( rc ) );
continue;
}
- if ( ! veto )
+ if ( ! veto.driver )
continue;
- DBGC ( driver, "EFIVETO %s is vetoed (%s)\n",
- efi_handle_name ( driver ), veto->name );
- if ( ( rc = efi_veto_driver ( driver ) ) != 0 ) {
+ if ( ( rc = efi_veto_driver ( &veto ) ) != 0 ) {
DBGC ( driver, "EFIVETO %s could not veto: %s\n",
efi_handle_name ( driver ), strerror ( rc ) );
}
generated by cgit v1.1 at 2024-07-17 09:18:56 +0000