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28 .\" @(#)getttyent.3 8.1 (Berkeley) 6/4/93
51 .Fn getttynam "const char *name"
57 .Fn isdialuptty "const char *name"
59 .Fn isnettty "const char *name"
66 each return a pointer to an object, with the following structure,
67 containing the broken-out fields of a line from the tty description
71 char *ty_name; /* terminal device name */
72 char *ty_getty; /* command to execute, usually getty */
73 char *ty_type; /* terminal type for termcap */
74 #define TTY_ON 0x01 /* enable logins (start ty_getty program) */
75 #define TTY_SECURE 0x02 /* allow uid of 0 to login */
76 #define TTY_DIALUP 0x04 /* is a dialup tty */
77 #define TTY_NETWORK 0x08 /* is a network tty */
78 #define TTY_IFEXISTS 0x10 /* configured as "onifexists" */
79 #define TTY_IFCONSOLE 0x20 /* configured as "onifconsole" */
80 int ty_status; /* status flags */
81 char *ty_window; /* command to start up window manager */
82 char *ty_comment; /* comment field */
83 char *ty_group; /* tty group name */
87 The fields are as follows:
88 .Bl -tag -width ty_comment
90 The name of the character-special file.
92 The name of the command invoked by
94 to initialize tty line characteristics.
96 The name of the default terminal type connected to this tty line.
98 A mask of bit fields which indicate various actions allowed on this
100 The possible flags are as follows:
101 .Bl -tag -width TTY_NETWORK
103 Enables logins (i.e.,
105 will start the command referenced by
109 Allow users with a uid of 0 to login on this terminal.
111 Identifies a tty as a dialin line.
112 If this flag is set, then
114 will return a non-zero value.
116 Identifies a tty used for network connections.
117 If this flag is set, then
119 will return a non-zero value.
121 Identifies a tty that does not necessarily exist.
123 Identifies a tty that might be a system console.
126 The command to execute for a window system associated with the line.
128 A group name to which the tty belongs.
129 If no group is specified in the ttys description file,
130 then the tty is placed in an anonymous group called "none".
132 Any trailing comment field, with any leading hash marks (``#'') or
136 If any of the fields pointing to character strings are unspecified,
137 they are returned as null pointers.
140 will be zero if no flag values are specified.
144 for a more complete discussion of the meaning and usage of the
150 reads the next line from the ttys file, opening the file if necessary.
154 rewinds the file if open, or opens the file if it is unopened.
158 closes any open files.
163 searches from the beginning of the file until a matching
174 return a null pointer on
182 return 0 on failure and 1 on success.
188 return non-zero if the dialup or network flag is set for the
189 tty entry relating to the tty named by the argument, and
192 .Bl -tag -width /etc/ttys -compact
209 functions appeared in
212 These functions use static data storage;
213 if the data is needed for future use, it should be
214 copied before any subsequent calls overwrite it.