diff options
| author | Alan Cox <alan@lxorguk.ukuu.org.uk> | 2006-08-27 04:24:02 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-08-27 14:01:34 -0400 |
| commit | 01da5fd83d6b2c5e36b77539f6cbdd8f49849225 (patch) | |
| tree | 70c1f1cb8325fe4801b952346bd2ef79d08882b5 /include/linux | |
| parent | af9b897ee639d96b2bd29b65b50cd0a1f2b6d6c9 (diff) | |
[PATCH] Fix tty layer DoS and comment relevant code
Unlike the other tty comment patch this one has code changes. Specifically
it limits the queue size for a tty to 64K characters (128Kbytes) worst case
even if the tty is ignoring tty->throttle. This is because certain drivers
don't honour the throttle value correctly, although it is a useful
safeguard anyway.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/tty.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/tty.h b/include/linux/tty.h index e421d5e34818..04827ca65781 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h | |||
| @@ -59,6 +59,7 @@ struct tty_bufhead { | |||
| 59 | struct tty_buffer *head; /* Queue head */ | 59 | struct tty_buffer *head; /* Queue head */ |
| 60 | struct tty_buffer *tail; /* Active buffer */ | 60 | struct tty_buffer *tail; /* Active buffer */ |
| 61 | struct tty_buffer *free; /* Free queue head */ | 61 | struct tty_buffer *free; /* Free queue head */ |
| 62 | int memory_used; /* Buffer space used excluding free queue */ | ||
| 62 | }; | 63 | }; |
| 63 | /* | 64 | /* |
| 64 | * The pty uses char_buf and flag_buf as a contiguous buffer | 65 | * The pty uses char_buf and flag_buf as a contiguous buffer |