diff options
author | Alan Cox <alan@linux.intel.com> | 2012-02-28 14:49:23 +0000 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-08 10:50:35 -0800 |
commit | 079c9534a96da9a85a2a2f9715851050fbfbf749 (patch) | |
tree | 0e3782ff6d341f38c6f0b3840cb3c8f2bc922df8 /drivers/tty/vt/selection.c | |
parent | 0fb8379dab9f97e4c56de8f9ea772c10eda27561 (diff) | |
download | op-kernel-dev-079c9534a96da9a85a2a2f9715851050fbfbf749.zip op-kernel-dev-079c9534a96da9a85a2a2f9715851050fbfbf749.tar.gz |
vt:tackle kbd_table
Keyboard struct lifetime is easy, but the locking is not and is completely
ignored by the existing code. Tackle this one head on
- Make the kbd_table private so we can run down all direct users
- Hoick the relevant ioctl handlers into the keyboard layer
- Lock them with the keyboard lock so they don't change mid keypress
- Add helpers for things like console stop/start so we isolate the poking
around properly
- Tweak the braille console so it still builds
There are a couple of FIXME locking cases left for ioctls that are so hideous
they should be addressed in a later patch. After this patch the kbd_table is
private and all the keyboard jiggery pokery is in one place.
This update fixes speakup and also a memory leak in the original.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/vt/selection.c')
-rw-r--r-- | drivers/tty/vt/selection.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/tty/vt/selection.c b/drivers/tty/vt/selection.c index 7a0a12a..738e45a 100644 --- a/drivers/tty/vt/selection.c +++ b/drivers/tty/vt/selection.c @@ -30,6 +30,7 @@ extern void poke_blanked_console(void); +/* FIXME: all this needs locking */ /* Variables for selection control. */ /* Use a dynamic buffer, instead of static (Dec 1994) */ struct vc_data *sel_cons; /* must not be deallocated */ @@ -138,7 +139,7 @@ int set_selection(const struct tiocl_selection __user *sel, struct tty_struct *t char *bp, *obp; int i, ps, pe, multiplier; u16 c; - struct kbd_struct *kbd = kbd_table + fg_console; + int mode; poke_blanked_console(); @@ -182,7 +183,11 @@ int set_selection(const struct tiocl_selection __user *sel, struct tty_struct *t clear_selection(); sel_cons = vc_cons[fg_console].d; } - use_unicode = kbd && kbd->kbdmode == VC_UNICODE; + mode = vt_do_kdgkbmode(fg_console); + if (mode == K_UNICODE) + use_unicode = 1; + else + use_unicode = 0; switch (sel_mode) { |