GNU/Linux man pages
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Syntaxe et mise en oeuvre :
GNU/Linux |
CentOS 5.6 |
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getttynam(3) |
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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.
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 */
Under Linux the file /etc/ttys, and the functions described above, are not used.
Not in POSIX.1-2001. Present on the BSDs, and perhaps other systems.
ttyname(3), ttyslot(3)
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getttynam(3) | |