GETTTYENT(3) Linux Programmer s Manual GETTTYENT(3)

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

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 ttyname 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 */

CONFORMING TO Not in POSIX.1-2001. Present on the BSDs, and perhaps other systems.

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

SEE ALSO ttyname(3), ttyslot(3)

COLOPHON This page is part of release 3.22 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.

GNU 2002-07-18 GETTTYENT(3)