endttyent (3) - Linux Manuals
endttyent: get ttys file entry
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);
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 terminal name 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 {
ty_status
can be:
#define TTY_ON 0x01 /* enable logins (start ty_getty program) */
#define TTY_SECURE 0x02 /* allow UID 0 to login */
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
Interface Attribute Value
getttyent(),
setttyent(),
endttyent(),
getttynam()
Thread safety MT-Unsafe race:ttyent CONFORMING TO
Not in POSIX.1.
Present on the BSDs, and perhaps other systems.
NOTES
Under Linux, the file
/etc/ttys,
and the functions described above, are not used.
COLOPHON
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