From e83b7cf8f1bad5b334b6352d3b850d8555530a9a Mon Sep 17 00:00:00 2001
From: Doug Zongker <dougz@android.com>
Date: Mon, 9 Jan 2012 15:16:13 -0800
Subject: support "sideload over ADB" mode

Rather than depending on the existence of some place to store a file
that is accessible to users on an an unbootable device (eg, a physical
sdcard, external USB drive, etc.), add support for sideloading
packages sent to the device with adb.

This change adds a "minimal adbd" which supports nothing but receiving
a package over adb (with the "adb sideload" command) and storing it to
a fixed filename in the /tmp ramdisk, from where it can be verified
and sideloaded in the usual way.  This should be leave available even
on locked user-build devices.

The user can select "apply package from ADB" from the recovery menu,
which starts minimal-adb mode (shutting down any real adbd that may be
running).  Once minimal-adb has received a package it exits
(restarting real adbd if appropriate) and then verification and
installation of the received package proceeds.

always initialize usb product, vendor, etc. for adb in recovery

Set these values even on non-debuggable builds, so that the mini-adb
now in recovery can work.
---
 minadbd/fdevent.h | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 minadbd/fdevent.h

(limited to 'minadbd/fdevent.h')

diff --git a/minadbd/fdevent.h b/minadbd/fdevent.h
new file mode 100644
index 000000000..a0ebe2a7e
--- /dev/null
+++ b/minadbd/fdevent.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2006 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __FDEVENT_H
+#define __FDEVENT_H
+
+#include <stdint.h>  /* for int64_t */
+
+/* events that may be observed */
+#define FDE_READ              0x0001
+#define FDE_WRITE             0x0002
+#define FDE_ERROR             0x0004
+#define FDE_TIMEOUT           0x0008
+
+/* features that may be set (via the events set/add/del interface) */
+#define FDE_DONT_CLOSE        0x0080
+
+typedef struct fdevent fdevent;
+
+typedef void (*fd_func)(int fd, unsigned events, void *userdata);
+
+/* Allocate and initialize a new fdevent object
+ * Note: use FD_TIMER as 'fd' to create a fd-less object
+ * (used to implement timers).
+*/
+fdevent *fdevent_create(int fd, fd_func func, void *arg);
+
+/* Uninitialize and deallocate an fdevent object that was
+** created by fdevent_create()
+*/
+void fdevent_destroy(fdevent *fde);
+
+/* Initialize an fdevent object that was externally allocated
+*/
+void fdevent_install(fdevent *fde, int fd, fd_func func, void *arg);
+
+/* Uninitialize an fdevent object that was initialized by
+** fdevent_install()
+*/
+void fdevent_remove(fdevent *item);
+
+/* Change which events should cause notifications
+*/
+void fdevent_set(fdevent *fde, unsigned events);
+void fdevent_add(fdevent *fde, unsigned events);
+void fdevent_del(fdevent *fde, unsigned events);
+
+void fdevent_set_timeout(fdevent *fde, int64_t  timeout_ms);
+
+/* loop forever, handling events.
+*/
+void fdevent_loop();
+
+struct fdevent 
+{
+    fdevent *next;
+    fdevent *prev;
+
+    int fd;
+    int force_eof;
+
+    unsigned short state;
+    unsigned short events;
+
+    fd_func func;
+    void *arg;
+};
+
+
+#endif
-- 
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