NAME
linedisc,
ttyldisc_add,
ttyldisc_lookup,
ttyldisc_remove —
extensible line discipline
framework
SYNOPSIS
#include
<sys/conf.h>
int
ttyldisc_add(struct
linesw *disc, int
no);
struct linesw *
ttyldisc_remove(const
char *name);
struct linesw *
ttyldisc_lookup(const
char *name);
DESCRIPTION
The NetBSD TTY line discipline framework allows extensibility. Modules that need special line disciplines can add them as convenient and do not need to modify tty_conf.c. Line disciplines are now managed by a string, rather than number.Once the framework has been initialized, a new
line discipline can be added by creating and initializing a
struct linesw and calling
ttyldisc_add().
The following is a brief description of each function in the framework:
ttyldisc_add()- Register a line discipline. The l_name field of the
struct linesw should point to a string which is to
be the symbolic name of that line discipline. For compatibility purposes,
a line discipline number can be passed in no, but
for new disciplines this should be set to
-1. ttyldisc_lookup()- Look up a line discipline by name.
NULLis returned if it can not be found. ttyldisc_remove()- Remove a line discipline called name and return a
pointer to it. If the discipline cannot be found or removed
ttyldisc_remove() will returnNULL.
SEE ALSO
HISTORY
The linedisc functions were added in
NetBSD 1.6.
AUTHORS
The NetBSD extensible line discipline framework was created by Eduardo Horvath ⟨eeh@NetBSD.org⟩.