linux.git/drivers/staging/android/binder.h, branch v3.17

staging: binder: Support concurrent 32 bit and 64 bit processes.

2014-02-25T00:29:40+00:00

For 64bit systems we want to use the same binder interface for 32bit and
64bit processes. Thus the size and the layout of the structures passed
between the kernel and the userspace has to be the same for both 32 and
64bit processes.

This change replaces all the uses of void* and size_t with
binder_uintptr_t and binder_size_t. These are then typedefed to specific
sizes depending on the use of the interface, as follows:
       * __u32 - on legacy 32bit only userspace
       * __u64 - on mixed 32/64bit userspace where all processes use the same
interface.

This change also increments the BINDER_CURRENT_PROTOCOL_VERSION to 8 and
hooks the compat_ioctl entry for the mixed 32/64bit Android userspace.

This patch also provides a CONFIG_ANDROID_BINDER_IPC_32BIT option for
compatability, which if set which enables the old protocol, setting
BINDER_CURRENT_PROTOCOL_VERSION to 7, on 32 bit systems.

Please note that all 64bit kernels will use the 64bit Binder ABI.

Cc: Colin Cross 
Cc: Arve Hjønnevåg 
Cc: Serban Constantinescu 
Cc: Android Kernel Team 
Signed-off-by: Arve Hjønnevåg 
[jstultz: Merged with upstream type changes. Various whitespace fixes
and longer Kconfig description for checkpatch. Included improved commit
message from Serban (with a few tweaks).]
Signed-off-by: John Stultz 
Signed-off-by: Greg Kroah-Hartman

staging: android: Split uapi out of binder.h

2014-02-18T19:03:28+00:00

Move the userspace interface of binder.h to
drivers/staging/android/uapi/binder.h.

Cc: Greg KH 
Cc: Colin Cross 
Cc: Android Kernel Team 
Signed-off-by: Colin Cross 
[jstultz: Worked out the collisions from some of the type changes
made upstream. Also minor commit subject tweak]
Signed-off-by: John Stultz 
Signed-off-by: Greg Kroah-Hartman

staging: android: binder: use whitespace consistently

2014-02-11T20:22:32+00:00

Whitespace between #define keyword and BINDER_* constants are space in
some point and tab in some point. Using space or tab is just writer's
choice. But, let's use them more consistently.

Signed-off-by: SeongJae Park 
Signed-off-by: Greg Kroah-Hartman

staging: android: binder: fix binder interface for 64bit compat layer

2013-07-23T21:37:22+00:00

The changes in this patch will fix the binder interface for use on 64bit
machines and stand as the base of the 64bit compat support. The changes
apply to the structures that are passed between the kernel and
userspace.

Most of the  changes applied mirror the change to struct binder_version
where there is no need for a 64bit wide protocol_version(on 64bit
machines). The change inlines with the existing 32bit userspace(the
structure has the same size) and simplifies the compat layer such that
the same handler can service the BINDER_VERSION ioctl.

Other changes make use of kernel types as well as user-exportable ones
and fix format specifier issues.

The changes do not affect existing 32bit ABI.

Signed-off-by: Serban Constantinescu 
Acked-by: Arve Hjønnevåg 
Signed-off-by: Greg Kroah-Hartman

staging: android: binder: replace types with portable ones

2013-07-23T21:37:22+00:00

Since this driver is meant to be used on different types of processors
and a portable driver should specify the size a variable expects to be
this patch changes the types used throughout the binder interface.

We use "userspace" types since this header will be exported and used by
the Android filesystem.

The patch does not change in any way the functionality of the binder driver.

Signed-off-by: Serban Constantinescu 
Acked-by: Arve Hjønnevåg 
Signed-off-by: Greg Kroah-Hartman

staging: android: binder: fix BC_FREE_BUFFER ioctl declaration

2013-07-23T21:37:21+00:00

BinderDriverCommands mirror the ioctl usage. Thus the size of the
structure passed through the interface should be used to generate the
ioctl No.

The change reflects the type being passed from the user space-a pointer
to a binder_buffer. This change should not affect the existing 32bit
user space since BC_FREE_BUFFER is computed as:

   #define _IOW(type,nr,size)         \
      ((type) << _IOC_TYPESHIFT) |    \
      ((nr)   << _IOC_NRSHIFT) |      \
      ((size) << _IOC_SIZESHIFT))

and for a 32bit compiler BC_FREE_BUFFER will have the same computed
value. This change will also ease our work in differentiating
BC_FREE_BUFFER from COMPAT_BC_FREE_BUFFER.

The change does not affect existing 32bit ABI.

Signed-off-by: Serban Constantinescu 
Acked-by: Arve Hjønnevåg 
Signed-off-by: Greg Kroah-Hartman

staging: android: binder: fix BINDER_SET_MAX_THREADS declaration

2013-07-23T21:37:21+00:00

This change will fix the BINDER_SET_MAX_THREADS ioctl to use __u32
instead of size_t for setting the max threads. Thus using the same
handler for 32 and 64bit kernels.

This value is stored internally in struct binder_proc and set to 15
on open_binder() in the libbinder API(thus no need for a 64bit size_t
on 64bit platforms).

The change does not affect existing 32bit ABI.

Signed-off-by: Serban Constantinescu 
Acked-by: Arve Hjønnevåg 
Signed-off-by: Greg Kroah-Hartman

staging: android: binder: modify struct binder_write_read to use size_t

2013-07-23T21:37:21+00:00

This change mirrors the userspace operation where struct binder_write_read
members that specify the buffer size and consumed size are size_t elements.

The patch also fixes the binder_thread_write() and binder_thread_read()
functions prototypes to conform with the definition of binder_write_read.

The changes do not affect existing 32bit ABI.

Signed-off-by: Serban Constantinescu 
Acked-by: Arve Hjønnevåg 
Signed-off-by: Greg Kroah-Hartman

staging: android: binder: replace IOCTL types with user-exportable types

2013-04-11T15:51:51+00:00

This patch modifies the IOCTL macros to use user-exportable data types,
as they are the referred kernel types for the user/kernel interface.

The patch does not change in any way the functionality of the binder driver.

Signed-off-by: Serban Constantinescu 
Acked-by: Arve Hjønnevåg 
Signed-off-by: Greg Kroah-Hartman

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2013-02-22T01:40:58+00:00

Pull trivial tree from Jiri Kosina:
 "Assorted tiny fixes queued in trivial tree"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (22 commits)
  DocBook: update EXPORT_SYMBOL entry to point at export.h
  Documentation: update top level 00-INDEX file with new additions
  ARM: at91/ide: remove unsused at91-ide Kconfig entry
  percpu_counter.h: comment code for better readability
  x86, efi: fix comment typo in head_32.S
  IB: cxgb3: delay freeing mem untill entirely done with it
  net: mvneta: remove unneeded version.h include
  time: x86: report_lost_ticks doesn't exist any more
  pcmcia: avoid static analysis complaint about use-after-free
  fs/jfs: Fix typo in comment : 'how may' -> 'how many'
  of: add missing documentation for of_platform_populate()
  btrfs: remove unnecessary cur_trans set before goto loop in join_transaction
  sound: soc: Fix typo in sound/codecs
  treewide: Fix typo in various drivers
  btrfs: fix comment typos
  Update ibmvscsi module name in Kconfig.
  powerpc: fix typo (utilties -> utilities)
  of: fix spelling mistake in comment
  h8300: Fix home page URL in h8300/README
  xtensa: Fix home page URL in Kconfig
  ...