tty: Make get_current_tty use a kref

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We now return a kref covered tty reference. That ensures the tty structure
doesn't go away when you have a return from get_current_tty. This is not
enough to protect you from most of the resources being freed behind your
back - yet.

[Updated to include fixes for SELinux problems found by Andrew Morton and
 an s390 leak found while debugging the former]

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Alan Cox 2008-10-13 10:39:13 +01:00 • committed by Linus Torvalds

parent f4d2a6c209

commit 452a00d2ee

4 changed files with 13 additions and 9 deletions

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10

drivers/char/tty_io.c

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