linux.git/fs/compat_ioctl.c, branch v2.6.26

tty: The big operations rework

2008-04-30T15:29:47+00:00

- Operations are now a shared const function block as with most other Linux
  objects

- Introduce wrappers for some optional functions to get consistent behaviour

- Wrap put_char which used to be patched by the tty layer

- Document which functions are needed/optional

- Make put_char report success/fail

- Cache the driver->ops pointer in the tty as tty->ops

- Remove various surplus lock calls we no longer need

- Remove proc_write method as noted by Alexey Dobriyan

- Introduce some missing sanity checks where certain driver/ldisc
  combinations would oops as they didn't check needed methods were present

[akpm@linux-foundation.org: fix fs/compat_ioctl.c build]
[akpm@linux-foundation.org: fix isicom]
[akpm@linux-foundation.org: fix arch/ia64/hp/sim/simserial.c build]
[akpm@linux-foundation.org: fix kgdb]
Signed-off-by: Alan Cox 
Acked-by: Greg Kroah-Hartman 
Cc: Jason Wessel 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tty: BKL pushdown

2008-04-30T15:29:40+00:00

- Push the BKL down into the line disciplines
- Switch the tty layer to unlocked_ioctl
- Introduce a new ctrl_lock spin lock for the control bits
- Eliminate much of the lock_kernel use in n_tty
- Prepare to (but don't yet) call the drivers with the lock dropped
  on the paths that historically held the lock

BKL now primarily protects open/close/ldisc change in the tty layer

[jirislaby@gmail.com: a couple of fixes]
Signed-off-by: Alan Cox 
Signed-off-by: Jiri Slaby 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

d_path: Make d_path() use a struct path

2008-02-15T05:17:09+00:00

d_path() is used on a  pair.  Lets use a struct path to
reflect this.

[akpm@linux-foundation.org: fix build in mm/memory.c]
Signed-off-by: Jan Blunck 
Acked-by: Bryan Wu 
Acked-by: Christoph Hellwig 
Cc: Al Viro 
Cc: "J. Bruce Fields" 
Cc: Neil Brown 
Cc: Michael Halcrow 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

dm ioctl: move compat code

2008-02-08T02:09:56+00:00

Move compat_ioctl handling into dm-ioctl.c.

Signed-off-by: Milan Broz 
Signed-off-by: Alasdair G Kergon

VFS: swap do_ioctl and vfs_ioctl names

2008-02-07T16:42:16+00:00

Rename old vfs_ioctl to do_ioctl, because the comment above it clearly
indicates that it is an internal function not to be exported to modules;
therefore it should have a more traditional do_XXX name.  The new do_ioctl
is exported in fs.h but not to modules.

Rename the old do_ioctl to vfs_ioctl because the names vfs_XXX should
preferably be reserved to callable VFS functions which modules may call, as
many other vfs_XXX functions already do.  Export the new vfs_ioctl to GPL
modules so others can use it (including Unionfs and eCryptfs).  Add DocBook
for new vfs_ioctl.

[akpm@linux-foundation.org: fix build]
Signed-off-by: Erez Zadok 
Cc: Christoph Hellwig 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

remove __attribute_used__

2008-01-28T22:21:18+00:00

Remove the deprecated __attribute_used__.

[Introduce __section in a few places to silence checkpatch /sam]

Signed-off-by: Adrian Bunk 
Signed-off-by: Sam Ravnborg

fix: using joysticks in 32 bit applications on 64 bit systems

2008-01-06T18:26:06+00:00

unfortunately 32 bit apps don't see the joysticks on a 64 bit system.
this prevents one playing X-Plane (http://www.x-plane.com/) or other
32-bit games with joysticks.

this is a known issue, and already raised several times:

 http://readlist.com/lists/vger.kernel.org/linux-kernel/28/144411.html

 http://www.brettcsmith.org/wiki/wiki.cgi?action=browse&diff=1&id=OzyComputer/Joystick

unfortunately this is still not fixed in the mainline kernel.

it would be nice to have this fixed, so that people can play these games
without having to patch their kernel.

the following patch solves the problem on 2.6.22.

Signed-off-by: Thomas Gleixner 
Acked-by: Christoph Hellwig 
Signed-off-by: Ingo Molnar 
Signed-off-by: Linus Torvalds

tty: add the new termios2 ioctls to the compatible list.

2007-11-29T17:24:55+00:00

Make them depend on TCGETS2.  If that one is implemented the rest should be
there as well.

Acked-by: Alan Cox 
Signed-off-by: Heiko Carstens 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[COMPAT]: Fix new dev_ifname32 returning -EFAULT

2007-10-31T04:29:42+00:00

A stray semicolon slipped in the patch that updated dev_ifname32 to
not be inline, causing it to always return -EFAULT. This fixes it.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: David S. Miller

sparse pointer use of zero as null

2007-10-18T21:37:31+00:00

Get rid of sparse related warnings from places that use integer as NULL
pointer.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Stephen Hemminger 
Cc: Andi Kleen 
Cc: Jeff Garzik 
Cc: Matt Mackall 
Cc: Ian Kent 
Cc: Arnd Bergmann 
Cc: Davide Libenzi 
Cc: Stephen Smalley 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds