lkml.org 
[lkml]   [2004]   [Feb]   [12]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateWed, 11 Feb 2004 22:00:46 -0800
From"H. Peter Anvin" <>
SubjectUpdated dynamic pty patch available
ftp://ftp.kernel.org/pub/linux/kernel/people/hpa/dynpty-test-2.patch

... against the current top-of-bkcvs 2.6 kernel.

This version of the patch makes *both* legacy and Unix98 ptys configure 
options (Unix98 only if EMBEDDED), and the number of legacy ptys is a 
configuration option -- useful if you want to reduce the memory 
footprint, or if you really wants lots of these guys (256 is no longer a 
hard limit.)

Additionally, I have added a sysctl option -- /proc/sys/kernel/pty/max 
-- for limiting the number of Unix98 ptys.  It was way too effective a 
DoS to eat up all kernel memory by opening /dev/ptmx repeatedly.  The 
default is 4096, but it can be adjusted all the way up to 2^20 if desirable.

	-hpa


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:00    [from the cache]
©2003-2008