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Manual

getttyent

NAME
LIBRARY
SYNOPSIS
DESCRIPTION
ATTRIBUTES
STANDARDS
NOTES
SEE ALSO

NAME

getttyent, getttynam, setttyent, endttyent - get ttys file entry

LIBRARY

Standard C library ( libc , -lc )

SYNOPSIS

#include <ttyent.h>

struct ttyent *getttyent(void);
struct ttyent *getttynam(const char * name );

int setttyent(void);
int endttyent(void);

DESCRIPTION

These functions provide an interface to the file _PATH_TTYS (e.g., /etc/ttys ).

The function setttyent () opens the file or rewinds it if already open.

The function endttyent () closes the file.

The function getttynam () searches for a given terminal name in the file. It returns a pointer to a ttyent structure (description below).

The function getttyent () opens the file _PATH_TTYS (if necessary) and returns the first entry. If the file is already open, the next entry. The ttyent structure has the form:

struct ttyent {
char *ty_name; /* terminal device name */
char *ty_getty; /* command to execute, usually getty */
char *ty_type; /* terminal type for termcap */
int ty_status; /* status flags */
char *ty_window; /* command to start up window manager */
char *ty_comment; /* comment field */
};

ty_status can be:

#define TTY_ON 0x01 /* enable logins (start ty_getty program) */
#define TTY_SECURE 0x02 /* allow UID 0 to login */

ATTRIBUTES

For an explanation of the terms used in this section, see attributes (7).

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STANDARDS

BSD.

NOTES

Under Linux, the file /etc/ttys , and the functions described above, are not used.

SEE ALSO

ttyname (3), ttyslot (3)