ctermid()
returns a string which is the pathname for the current
controlling terminal for this process.
If
s
is NULL,
a static buffer is used, otherwise
s
points to a buffer used to hold the terminal pathname.
The symbolic constant
L_ctermid
is the maximum number of characters in the returned pathname.
RETURN VALUE
The pointer to the pathname.
CONFORMING TO
Svr4, POSIX.1-2001.
BUGS
The path returned may not uniquely identify the controlling
terminal; it may, for example, be
/dev/tty.
It is not assured that the program can open the terminal.
This page is part of release 3.14 of the Linux
man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.