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Staging: android: add binder driver
It builds, but not as a module, and with lots of warnings. I also had to fix up a few syntax errors to get it to build properly, I'm doubting that anyone has built it in a while :( Signed-off-by: Arve Hjønnevåg <arve@android.com> Signed-off-by: Brian Swetland <swetland@google.com> Cc: Robert Love <rlove@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Arve Hjønnevåg
Greg Kroah-Hartman
parent
6dc9c9e8b0
commit
457b9a6f09
@ -6,4 +6,8 @@ config ANDROID
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---help---
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Enable support for various drivers needed on the Android platform
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config ANDROID_BINDER_IPC
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tristate "Android Binder IPC Driver"
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default y
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endmenu
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@ -1 +1,2 @@
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obj-$(CONFIG_ANDROID) += android.o
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obj-$(CONFIG_ANDROID_BINDER_IPC) += binder.o
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3499
drivers/staging/android/binder.c
Normal file
3499
drivers/staging/android/binder.c
Normal file
File diff suppressed because it is too large
Load Diff
330
drivers/staging/android/binder.h
Normal file
330
drivers/staging/android/binder.h
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@ -0,0 +1,330 @@
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/*
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* Copyright (C) 2008 Google, Inc.
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*
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* Based on, but no longer compatible with, the original
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* OpenBinder.org binder driver interface, which is:
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*
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* Copyright (c) 2005 Palmsource, Inc.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef _LINUX_BINDER_H
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#define _LINUX_BINDER_H
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#include <linux/ioctl.h>
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#define B_PACK_CHARS(c1, c2, c3, c4) \
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((((c1)<<24)) | (((c2)<<16)) | (((c3)<<8)) | (c4))
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#define B_TYPE_LARGE 0x85
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enum {
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BINDER_TYPE_BINDER = B_PACK_CHARS('s', 'b', '*', B_TYPE_LARGE),
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BINDER_TYPE_WEAK_BINDER = B_PACK_CHARS('w', 'b', '*', B_TYPE_LARGE),
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BINDER_TYPE_HANDLE = B_PACK_CHARS('s', 'h', '*', B_TYPE_LARGE),
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BINDER_TYPE_WEAK_HANDLE = B_PACK_CHARS('w', 'h', '*', B_TYPE_LARGE),
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BINDER_TYPE_FD = B_PACK_CHARS('f', 'd', '*', B_TYPE_LARGE),
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};
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enum {
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FLAT_BINDER_FLAG_PRIORITY_MASK = 0xff,
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FLAT_BINDER_FLAG_ACCEPTS_FDS = 0x100,
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};
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/*
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* This is the flattened representation of a Binder object for transfer
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* between processes. The 'offsets' supplied as part of a binder transaction
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* contains offsets into the data where these structures occur. The Binder
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* driver takes care of re-writing the structure type and data as it moves
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* between processes.
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*/
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struct flat_binder_object {
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/* 8 bytes for large_flat_header. */
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unsigned long type;
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unsigned long flags;
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/* 8 bytes of data. */
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union {
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void *binder; /* local object */
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signed long handle; /* remote object */
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};
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/* extra data associated with local object */
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void *cookie;
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};
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/*
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* On 64-bit platforms where user code may run in 32-bits the driver must
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* translate the buffer (and local binder) addresses apropriately.
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*/
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struct binder_write_read {
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signed long write_size; /* bytes to write */
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signed long write_consumed; /* bytes consumed by driver */
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unsigned long write_buffer;
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signed long read_size; /* bytes to read */
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signed long read_consumed; /* bytes consumed by driver */
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unsigned long read_buffer;
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};
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/* Use with BINDER_VERSION, driver fills in fields. */
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struct binder_version {
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/* driver protocol version -- increment with incompatible change */
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signed long protocol_version;
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};
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/* This is the current protocol version. */
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#define BINDER_CURRENT_PROTOCOL_VERSION 7
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#define BINDER_WRITE_READ _IOWR('b', 1, struct binder_write_read)
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#define BINDER_SET_IDLE_TIMEOUT _IOW('b', 3, int64_t)
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#define BINDER_SET_MAX_THREADS _IOW('b', 5, size_t)
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#define BINDER_SET_IDLE_PRIORITY _IOW('b', 6, int)
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#define BINDER_SET_CONTEXT_MGR _IOW('b', 7, int)
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#define BINDER_THREAD_EXIT _IOW('b', 8, int)
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#define BINDER_VERSION _IOWR('b', 9, struct binder_version)
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/*
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* NOTE: Two special error codes you should check for when calling
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* in to the driver are:
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*
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* EINTR -- The operation has been interupted. This should be
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* handled by retrying the ioctl() until a different error code
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* is returned.
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*
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* ECONNREFUSED -- The driver is no longer accepting operations
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* from your process. That is, the process is being destroyed.
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* You should handle this by exiting from your process. Note
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* that once this error code is returned, all further calls to
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* the driver from any thread will return this same code.
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*/
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enum transaction_flags {
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TF_ONE_WAY = 0x01, /* this is a one-way call: async, no return */
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TF_ROOT_OBJECT = 0x04, /* contents are the component's root object */
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TF_STATUS_CODE = 0x08, /* contents are a 32-bit status code */
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TF_ACCEPT_FDS = 0x10, /* allow replies with file descriptors */
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};
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struct binder_transaction_data {
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/* The first two are only used for bcTRANSACTION and brTRANSACTION,
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* identifying the target and contents of the transaction.
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*/
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union {
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size_t handle; /* target descriptor of command transaction */
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void *ptr; /* target descriptor of return transaction */
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} target;
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void *cookie; /* target object cookie */
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unsigned int code; /* transaction command */
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/* General information about the transaction. */
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unsigned int flags;
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pid_t sender_pid;
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uid_t sender_euid;
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size_t data_size; /* number of bytes of data */
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size_t offsets_size; /* number of bytes of offsets */
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/* If this transaction is inline, the data immediately
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* follows here; otherwise, it ends with a pointer to
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* the data buffer.
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*/
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union {
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struct {
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/* transaction data */
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const void *buffer;
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/* offsets from buffer to flat_binder_object structs */
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const void *offsets;
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} ptr;
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uint8_t buf[8];
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} data;
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};
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struct binder_ptr_cookie {
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void *ptr;
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void *cookie;
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};
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struct binder_pri_desc {
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int priority;
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int desc;
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};
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struct binder_pri_ptr_cookie {
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int priority;
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void *ptr;
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void *cookie;
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};
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enum BinderDriverReturnProtocol {
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BR_ERROR = _IOR('r', 0, int),
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/*
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* int: error code
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*/
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BR_OK = _IO('r', 1),
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/* No parameters! */
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BR_TRANSACTION = _IOR('r', 2, struct binder_transaction_data),
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BR_REPLY = _IOR('r', 3, struct binder_transaction_data),
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/*
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* binder_transaction_data: the received command.
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*/
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BR_ACQUIRE_RESULT = _IOR('r', 4, int),
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/*
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* not currently supported
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* int: 0 if the last bcATTEMPT_ACQUIRE was not successful.
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* Else the remote object has acquired a primary reference.
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*/
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BR_DEAD_REPLY = _IO('r', 5),
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/*
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* The target of the last transaction (either a bcTRANSACTION or
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* a bcATTEMPT_ACQUIRE) is no longer with us. No parameters.
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*/
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BR_TRANSACTION_COMPLETE = _IO('r', 6),
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/*
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* No parameters... always refers to the last transaction requested
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* (including replies). Note that this will be sent even for
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* asynchronous transactions.
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*/
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BR_INCREFS = _IOR('r', 7, struct binder_ptr_cookie),
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BR_ACQUIRE = _IOR('r', 8, struct binder_ptr_cookie),
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BR_RELEASE = _IOR('r', 9, struct binder_ptr_cookie),
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BR_DECREFS = _IOR('r', 10, struct binder_ptr_cookie),
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/*
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* void *: ptr to binder
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* void *: cookie for binder
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*/
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BR_ATTEMPT_ACQUIRE = _IOR('r', 11, struct binder_pri_ptr_cookie),
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/*
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* not currently supported
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* int: priority
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* void *: ptr to binder
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* void *: cookie for binder
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*/
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BR_NOOP = _IO('r', 12),
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/*
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* No parameters. Do nothing and examine the next command. It exists
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* primarily so that we can replace it with a BR_SPAWN_LOOPER command.
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*/
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BR_SPAWN_LOOPER = _IO('r', 13),
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/*
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* No parameters. The driver has determined that a process has no
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* threads waiting to service incomming transactions. When a process
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* receives this command, it must spawn a new service thread and
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* register it via bcENTER_LOOPER.
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*/
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BR_FINISHED = _IO('r', 14),
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/*
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* not currently supported
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* stop threadpool thread
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*/
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BR_DEAD_BINDER = _IOR('r', 15, void *),
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/*
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* void *: cookie
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*/
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BR_CLEAR_DEATH_NOTIFICATION_DONE = _IOR('r', 16, void *),
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/*
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* void *: cookie
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*/
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BR_FAILED_REPLY = _IO('r', 17),
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/*
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* The the last transaction (either a bcTRANSACTION or
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* a bcATTEMPT_ACQUIRE) failed (e.g. out of memory). No parameters.
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*/
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};
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enum BinderDriverCommandProtocol {
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BC_TRANSACTION = _IOW('c', 0, struct binder_transaction_data),
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BC_REPLY = _IOW('c', 1, struct binder_transaction_data),
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/*
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* binder_transaction_data: the sent command.
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*/
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BC_ACQUIRE_RESULT = _IOW('c', 2, int),
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/*
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* not currently supported
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* int: 0 if the last BR_ATTEMPT_ACQUIRE was not successful.
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* Else you have acquired a primary reference on the object.
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*/
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BC_FREE_BUFFER = _IOW('c', 3, int),
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/*
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* void *: ptr to transaction data received on a read
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*/
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BC_INCREFS = _IOW('c', 4, int),
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BC_ACQUIRE = _IOW('c', 5, int),
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BC_RELEASE = _IOW('c', 6, int),
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BC_DECREFS = _IOW('c', 7, int),
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/*
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* int: descriptor
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*/
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BC_INCREFS_DONE = _IOW('c', 8, struct binder_ptr_cookie),
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BC_ACQUIRE_DONE = _IOW('c', 9, struct binder_ptr_cookie),
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/*
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* void *: ptr to binder
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* void *: cookie for binder
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*/
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BC_ATTEMPT_ACQUIRE = _IOW('c', 10, struct binder_pri_desc),
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/*
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* not currently supported
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* int: priority
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* int: descriptor
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*/
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BC_REGISTER_LOOPER = _IO('c', 11),
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/*
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* No parameters.
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* Register a spawned looper thread with the device.
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*/
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BC_ENTER_LOOPER = _IO('c', 12),
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BC_EXIT_LOOPER = _IO('c', 13),
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/*
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* No parameters.
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* These two commands are sent as an application-level thread
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* enters and exits the binder loop, respectively. They are
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* used so the binder can have an accurate count of the number
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* of looping threads it has available.
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*/
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BC_REQUEST_DEATH_NOTIFICATION = _IOW('c', 14, struct binder_ptr_cookie),
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/*
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* void *: ptr to binder
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* void *: cookie
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*/
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BC_CLEAR_DEATH_NOTIFICATION = _IOW('c', 15, struct binder_ptr_cookie),
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/*
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* void *: ptr to binder
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* void *: cookie
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*/
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BC_DEAD_BINDER_DONE = _IOW('c', 16, void *),
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/*
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* void *: cookie
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*/
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};
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#endif /* _LINUX_BINDER_H */
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