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 */