CTERMID
Section: Linux Programmer's Manual (3)
Updated: 2013-07-04
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NAME
ctermid - get controlling terminal name
SYNOPSIS
#include <stdio.h>
char *ctermid(char *s);
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
ctermid():
_POSIX_C_SOURCE >= 1 || _XOPEN_SOURCE || _POSIX_SOURCE
DESCRIPTION
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.
ATTRIBUTES
Multithreading (see pthreads(7))
The
ctermid()
function is thread-safe with exceptions.
It is not thread-safe if called with a NULL parameter.
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.
SEE ALSO
ttyname(3)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ATTRIBUTES
-
- Multithreading (see pthreads(7))
-
- CONFORMING TO
-
- BUGS
-
- SEE ALSO
-
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