Messages in this thread | | | Date | Wed, 11 Feb 2004 22:00:46 -0800 | From | "H. Peter Anvin" <> | Subject | Updated dynamic pty patch available |
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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
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