Messages in this thread | | | Date | Sun, 24 Nov 2013 00:38:59 +0000 | From | One Thousand Gnomes <> | Subject | Re: [PATCH] n_tty: Fix 4096-byte canonical reads |
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On Fri, 22 Nov 2013 07:16:25 -0500 Peter Hurley <peter@hurleysoftware.com> wrote:
> Although the maximum allowable canonical line is specified to > be 255 bytes (MAX_CANON), the practical limit has actually been > the size of the line discipline read buffer (N_TTY_BUF_SIZE == 4096).
Looks good. MAX_CANON in SVID and POSIX is a guarantee that you'll be able to edit that may characters into a line. What happens beyond MAX_CANON is implementation defined and msotly it seems interpreted as "you may get more" - ie MAX_CANON is a minimum line guarantee.
Alan
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