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getttynam
Langue: en
Version: 2002-07-18 (ubuntu - 24/10/10)
Section: 3 (Bibliothèques de fonctions)
NAME
getttyent, getttynam, setttyent, endttyent - get ttys file entrySYNOPSIS
#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
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