setttyent(3) -- Linux man page
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
struct ttyent (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
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 */
NOTES
Under Linux the file
/etc/ttys,
and the functions described above, are not used.
SEE ALSO
ttyname(3),
ttyslot(3)
| 
