getttyent, getttynam, setttyent, endttyent — get ttys file entry
#include <ttyent.h>
struct ttyent *getttyent( |
void) ; |
struct ttyent *getttynam( |
const char * | name) ; |
int
setttyent( |
void) ; |
int
endttyent( |
void) ; |
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.
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 */