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43 .Nd extensible line discipline framework
47 .Fn ttyldisc_add "struct linesw *disc" "int no"
49 .Fn ttyldisc_remove "const char *name"
51 .Fn ttyldisc_lookup "const char *name"
55 TTY line discipline framework allows extensibility.
56 Modules that need special line disciplines can add
57 them as convenient and do not need to modify tty_conf.c.
58 Line disciplines are now managed by a string, rather than
61 Once the framework has been initialized, a new line
62 discipline can be added by creating and initializing a
67 The following is a brief description of each function in the framework:
68 .Bl -tag -width "ttyldisc_remove()"
70 Register a line discipline.
75 should point to a string which is to be the symbolic
76 name of that line discipline.
77 For compatibility purposes, a line discipline number can be passed in
79 but for new disciplines this should be set to
81 .It Fn ttyldisc_lookup
82 Look up a line discipline by
85 is returned if it can not be found.
86 .It Fn ttyldisc_remove
87 Remove a line discipline called
89 and return a pointer to it.
90 If the discipline cannot be found or removed
100 functions were added in
105 extensible line discipline framework was created by