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2017-09-15
Aliases: endttyent(3), endttyent(3), endttyent(3), endttyent(3), endttyent(3), endttyent(3), endttyent(3), endttyent(3), getttynam(3), getttynam(3), getttynam(3), getttynam(3), getttynam(3), getttynam(3), getttynam(3), getttynam(3), setttyent(3), setttyent(3), setttyent(3), setttyent(3), setttyent(3), setttyent(3), setttyent(3), setttyent(3)

manpages-dev

Manual pages about using GNU/Linux for development

man-pages

Linux kernel and C library user-space interface documentation

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 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).
Interface Attribute Value
Thread safety MT-Unsafe race:ttyent

CONFORMING TO

Not in POSIX.1. Present on the BSDs, and perhaps other systems.

NOTES

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

COLOPHON

This page is part of release 5.00 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

REFERENCED BY

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